3 * Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
4 * 2006 Edgard Lima <edgard.lima@gmail.com>
6 * gstv4l2object.c: base class for V4L2 elements
8 * This library is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU Library General Public License as published
10 * by the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version. This library is distributed in the hope
12 * that it will be useful, but WITHOUT ANY WARRANTY; without even the
13 * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
14 * PURPOSE. See the GNU Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301,
30 #include <sys/ioctl.h>
34 #include <gudev/gudev.h>
37 #include "ext/videodev2.h"
38 #include "gstv4l2object.h"
39 #include "gstv4l2tuner.h"
40 #include "gstv4l2colorbalance.h"
42 #include "gst/gst-i18n-plugin.h"
44 #include <gst/video/video.h>
45 #include <gst/allocators/gstdmabuf.h>
47 GST_DEBUG_CATEGORY_EXTERN (v4l2_debug);
48 #define GST_CAT_DEFAULT v4l2_debug
50 #define DEFAULT_PROP_DEVICE_NAME NULL
51 #define DEFAULT_PROP_DEVICE_FD -1
52 #define DEFAULT_PROP_FLAGS 0
53 #define DEFAULT_PROP_TV_NORM 0
54 #define DEFAULT_PROP_IO_MODE GST_V4L2_IO_AUTO
56 #define ENCODED_BUFFER_SIZE (2 * 1024 * 1024)
61 V4L2_STD_OBJECT_PROPS,
65 * common format / caps utilities:
69 GST_V4L2_RAW = 1 << 0,
70 GST_V4L2_CODEC = 1 << 1,
71 GST_V4L2_TRANSPORT = 1 << 2,
72 GST_V4L2_NO_PARSE = 1 << 3,
80 GstV4L2FormatFlags flags;
83 static const GstV4L2FormatDesc gst_v4l2_formats[] = {
85 {V4L2_PIX_FMT_RGB332, TRUE, GST_V4L2_RAW},
86 {V4L2_PIX_FMT_ARGB555, TRUE, GST_V4L2_RAW},
87 {V4L2_PIX_FMT_XRGB555, TRUE, GST_V4L2_RAW},
88 {V4L2_PIX_FMT_ARGB555X, TRUE, GST_V4L2_RAW},
89 {V4L2_PIX_FMT_XRGB555X, TRUE, GST_V4L2_RAW},
90 {V4L2_PIX_FMT_RGB565, TRUE, GST_V4L2_RAW},
91 {V4L2_PIX_FMT_RGB565X, TRUE, GST_V4L2_RAW},
92 {V4L2_PIX_FMT_BGR666, TRUE, GST_V4L2_RAW},
93 {V4L2_PIX_FMT_BGR24, TRUE, GST_V4L2_RAW},
94 {V4L2_PIX_FMT_RGB24, TRUE, GST_V4L2_RAW},
95 {V4L2_PIX_FMT_ABGR32, TRUE, GST_V4L2_RAW},
96 {V4L2_PIX_FMT_XBGR32, TRUE, GST_V4L2_RAW},
97 {V4L2_PIX_FMT_BGRA32, TRUE, GST_V4L2_RAW},
98 {V4L2_PIX_FMT_BGRX32, TRUE, GST_V4L2_RAW},
99 {V4L2_PIX_FMT_RGBA32, TRUE, GST_V4L2_RAW},
100 {V4L2_PIX_FMT_RGBX32, TRUE, GST_V4L2_RAW},
101 {V4L2_PIX_FMT_ARGB32, TRUE, GST_V4L2_RAW},
102 {V4L2_PIX_FMT_XRGB32, TRUE, GST_V4L2_RAW},
104 /* Deprecated Packed RGB Image Formats (alpha ambiguity) */
105 {V4L2_PIX_FMT_RGB444, TRUE, GST_V4L2_RAW},
106 {V4L2_PIX_FMT_RGB555, TRUE, GST_V4L2_RAW},
107 {V4L2_PIX_FMT_RGB555X, TRUE, GST_V4L2_RAW},
108 {V4L2_PIX_FMT_BGR32, TRUE, GST_V4L2_RAW},
109 {V4L2_PIX_FMT_RGB32, TRUE, GST_V4L2_RAW},
112 {V4L2_PIX_FMT_GREY, TRUE, GST_V4L2_RAW},
113 {V4L2_PIX_FMT_Y4, TRUE, GST_V4L2_RAW},
114 {V4L2_PIX_FMT_Y6, TRUE, GST_V4L2_RAW},
115 {V4L2_PIX_FMT_Y10, TRUE, GST_V4L2_RAW},
116 {V4L2_PIX_FMT_Y12, TRUE, GST_V4L2_RAW},
117 {V4L2_PIX_FMT_Y16, TRUE, GST_V4L2_RAW},
118 {V4L2_PIX_FMT_Y16_BE, TRUE, GST_V4L2_RAW},
119 {V4L2_PIX_FMT_Y10BPACK, TRUE, GST_V4L2_RAW},
121 /* Palette formats */
122 {V4L2_PIX_FMT_PAL8, TRUE, GST_V4L2_RAW},
124 /* Chrominance formats */
125 {V4L2_PIX_FMT_UV8, TRUE, GST_V4L2_RAW},
127 /* Luminance+Chrominance formats */
128 {V4L2_PIX_FMT_YVU410, TRUE, GST_V4L2_RAW},
129 {V4L2_PIX_FMT_YVU420, TRUE, GST_V4L2_RAW},
130 {V4L2_PIX_FMT_YVU420M, TRUE, GST_V4L2_RAW},
131 {V4L2_PIX_FMT_YUYV, TRUE, GST_V4L2_RAW},
132 {V4L2_PIX_FMT_YYUV, TRUE, GST_V4L2_RAW},
133 {V4L2_PIX_FMT_YVYU, TRUE, GST_V4L2_RAW},
134 {V4L2_PIX_FMT_UYVY, TRUE, GST_V4L2_RAW},
135 {V4L2_PIX_FMT_VYUY, TRUE, GST_V4L2_RAW},
136 {V4L2_PIX_FMT_YUV422P, TRUE, GST_V4L2_RAW},
137 {V4L2_PIX_FMT_YUV411P, TRUE, GST_V4L2_RAW},
138 {V4L2_PIX_FMT_Y41P, TRUE, GST_V4L2_RAW},
139 {V4L2_PIX_FMT_YUV444, TRUE, GST_V4L2_RAW},
140 {V4L2_PIX_FMT_YUV555, TRUE, GST_V4L2_RAW},
141 {V4L2_PIX_FMT_YUV565, TRUE, GST_V4L2_RAW},
142 {V4L2_PIX_FMT_YUV32, TRUE, GST_V4L2_RAW},
143 {V4L2_PIX_FMT_YUV410, TRUE, GST_V4L2_RAW},
144 {V4L2_PIX_FMT_YUV420, TRUE, GST_V4L2_RAW},
145 {V4L2_PIX_FMT_YUV420M, TRUE, GST_V4L2_RAW},
146 {V4L2_PIX_FMT_HI240, TRUE, GST_V4L2_RAW},
147 {V4L2_PIX_FMT_HM12, TRUE, GST_V4L2_RAW},
148 {V4L2_PIX_FMT_M420, TRUE, GST_V4L2_RAW},
150 /* two planes -- one Y, one Cr + Cb interleaved */
151 {V4L2_PIX_FMT_NV12, TRUE, GST_V4L2_RAW},
152 {V4L2_PIX_FMT_NV12M, TRUE, GST_V4L2_RAW},
153 {V4L2_PIX_FMT_NV12MT, TRUE, GST_V4L2_RAW},
154 {V4L2_PIX_FMT_NV12MT_16X16, TRUE, GST_V4L2_RAW},
155 {V4L2_PIX_FMT_NV21, TRUE, GST_V4L2_RAW},
156 {V4L2_PIX_FMT_NV21M, TRUE, GST_V4L2_RAW},
157 {V4L2_PIX_FMT_NV16, TRUE, GST_V4L2_RAW},
158 {V4L2_PIX_FMT_NV16M, TRUE, GST_V4L2_RAW},
159 {V4L2_PIX_FMT_NV61, TRUE, GST_V4L2_RAW},
160 {V4L2_PIX_FMT_NV61M, TRUE, GST_V4L2_RAW},
161 {V4L2_PIX_FMT_NV24, TRUE, GST_V4L2_RAW},
162 {V4L2_PIX_FMT_NV42, TRUE, GST_V4L2_RAW},
164 /* Bayer formats - see http://www.siliconimaging.com/RGB%20Bayer.htm */
165 {V4L2_PIX_FMT_SBGGR8, TRUE, GST_V4L2_RAW},
166 {V4L2_PIX_FMT_SGBRG8, TRUE, GST_V4L2_RAW},
167 {V4L2_PIX_FMT_SGRBG8, TRUE, GST_V4L2_RAW},
168 {V4L2_PIX_FMT_SRGGB8, TRUE, GST_V4L2_RAW},
170 /* compressed formats */
171 {V4L2_PIX_FMT_MJPEG, FALSE, GST_V4L2_CODEC},
172 {V4L2_PIX_FMT_JPEG, FALSE, GST_V4L2_CODEC},
173 {V4L2_PIX_FMT_PJPG, FALSE, GST_V4L2_CODEC},
174 {V4L2_PIX_FMT_DV, FALSE, GST_V4L2_TRANSPORT},
175 {V4L2_PIX_FMT_MPEG, FALSE, GST_V4L2_TRANSPORT},
176 {V4L2_PIX_FMT_FWHT, FALSE, GST_V4L2_CODEC},
177 {V4L2_PIX_FMT_H264, FALSE, GST_V4L2_CODEC},
178 {V4L2_PIX_FMT_H264_NO_SC, FALSE, GST_V4L2_CODEC},
179 {V4L2_PIX_FMT_H264_MVC, FALSE, GST_V4L2_CODEC},
180 {V4L2_PIX_FMT_HEVC, FALSE, GST_V4L2_CODEC},
181 {V4L2_PIX_FMT_H263, FALSE, GST_V4L2_CODEC},
182 {V4L2_PIX_FMT_MPEG1, FALSE, GST_V4L2_CODEC},
183 {V4L2_PIX_FMT_MPEG2, FALSE, GST_V4L2_CODEC},
184 {V4L2_PIX_FMT_MPEG4, FALSE, GST_V4L2_CODEC},
185 {V4L2_PIX_FMT_XVID, FALSE, GST_V4L2_CODEC},
186 {V4L2_PIX_FMT_VC1_ANNEX_G, FALSE, GST_V4L2_CODEC},
187 {V4L2_PIX_FMT_VC1_ANNEX_L, FALSE, GST_V4L2_CODEC},
188 {V4L2_PIX_FMT_VP8, FALSE, GST_V4L2_CODEC | GST_V4L2_NO_PARSE},
189 {V4L2_PIX_FMT_VP9, FALSE, GST_V4L2_CODEC | GST_V4L2_NO_PARSE},
191 /* Vendor-specific formats */
192 {V4L2_PIX_FMT_WNVA, TRUE, GST_V4L2_CODEC},
193 {V4L2_PIX_FMT_SN9C10X, TRUE, GST_V4L2_CODEC},
194 {V4L2_PIX_FMT_PWC1, TRUE, GST_V4L2_CODEC},
195 {V4L2_PIX_FMT_PWC2, TRUE, GST_V4L2_CODEC},
198 #define GST_V4L2_FORMAT_COUNT (G_N_ELEMENTS (gst_v4l2_formats))
200 static GSList *gst_v4l2_object_get_format_list (GstV4l2Object * v4l2object);
203 #define GST_TYPE_V4L2_DEVICE_FLAGS (gst_v4l2_device_get_type ())
205 gst_v4l2_device_get_type (void)
207 static GType v4l2_device_type = 0;
209 if (v4l2_device_type == 0) {
210 static const GFlagsValue values[] = {
211 {V4L2_CAP_VIDEO_CAPTURE, "Device supports video capture", "capture"},
212 {V4L2_CAP_VIDEO_OUTPUT, "Device supports video playback", "output"},
213 {V4L2_CAP_VIDEO_OVERLAY, "Device supports video overlay", "overlay"},
215 {V4L2_CAP_VBI_CAPTURE, "Device supports the VBI capture", "vbi-capture"},
216 {V4L2_CAP_VBI_OUTPUT, "Device supports the VBI output", "vbi-output"},
218 {V4L2_CAP_TUNER, "Device has a tuner or modulator", "tuner"},
219 {V4L2_CAP_AUDIO, "Device has audio inputs or outputs", "audio"},
225 g_flags_register_static ("GstV4l2DeviceTypeFlags", values);
228 return v4l2_device_type;
231 #define GST_TYPE_V4L2_TV_NORM (gst_v4l2_tv_norm_get_type ())
233 gst_v4l2_tv_norm_get_type (void)
235 static GType v4l2_tv_norm = 0;
238 static const GEnumValue tv_norms[] = {
241 {V4L2_STD_NTSC, "NTSC", "NTSC"},
242 {V4L2_STD_NTSC_M, "NTSC-M", "NTSC-M"},
243 {V4L2_STD_NTSC_M_JP, "NTSC-M-JP", "NTSC-M-JP"},
244 {V4L2_STD_NTSC_M_KR, "NTSC-M-KR", "NTSC-M-KR"},
245 {V4L2_STD_NTSC_443, "NTSC-443", "NTSC-443"},
247 {V4L2_STD_PAL, "PAL", "PAL"},
248 {V4L2_STD_PAL_BG, "PAL-BG", "PAL-BG"},
249 {V4L2_STD_PAL_B, "PAL-B", "PAL-B"},
250 {V4L2_STD_PAL_B1, "PAL-B1", "PAL-B1"},
251 {V4L2_STD_PAL_G, "PAL-G", "PAL-G"},
252 {V4L2_STD_PAL_H, "PAL-H", "PAL-H"},
253 {V4L2_STD_PAL_I, "PAL-I", "PAL-I"},
254 {V4L2_STD_PAL_DK, "PAL-DK", "PAL-DK"},
255 {V4L2_STD_PAL_D, "PAL-D", "PAL-D"},
256 {V4L2_STD_PAL_D1, "PAL-D1", "PAL-D1"},
257 {V4L2_STD_PAL_K, "PAL-K", "PAL-K"},
258 {V4L2_STD_PAL_M, "PAL-M", "PAL-M"},
259 {V4L2_STD_PAL_N, "PAL-N", "PAL-N"},
260 {V4L2_STD_PAL_Nc, "PAL-Nc", "PAL-Nc"},
261 {V4L2_STD_PAL_60, "PAL-60", "PAL-60"},
263 {V4L2_STD_SECAM, "SECAM", "SECAM"},
264 {V4L2_STD_SECAM_B, "SECAM-B", "SECAM-B"},
265 {V4L2_STD_SECAM_G, "SECAM-G", "SECAM-G"},
266 {V4L2_STD_SECAM_H, "SECAM-H", "SECAM-H"},
267 {V4L2_STD_SECAM_DK, "SECAM-DK", "SECAM-DK"},
268 {V4L2_STD_SECAM_D, "SECAM-D", "SECAM-D"},
269 {V4L2_STD_SECAM_K, "SECAM-K", "SECAM-K"},
270 {V4L2_STD_SECAM_K1, "SECAM-K1", "SECAM-K1"},
271 {V4L2_STD_SECAM_L, "SECAM-L", "SECAM-L"},
272 {V4L2_STD_SECAM_LC, "SECAM-Lc", "SECAM-Lc"},
277 v4l2_tv_norm = g_enum_register_static ("V4L2_TV_norms", tv_norms);
284 gst_v4l2_io_mode_get_type (void)
286 static GType v4l2_io_mode = 0;
289 static const GEnumValue io_modes[] = {
290 {GST_V4L2_IO_AUTO, "GST_V4L2_IO_AUTO", "auto"},
291 {GST_V4L2_IO_RW, "GST_V4L2_IO_RW", "rw"},
292 {GST_V4L2_IO_MMAP, "GST_V4L2_IO_MMAP", "mmap"},
293 {GST_V4L2_IO_USERPTR, "GST_V4L2_IO_USERPTR", "userptr"},
294 {GST_V4L2_IO_DMABUF, "GST_V4L2_IO_DMABUF", "dmabuf"},
295 {GST_V4L2_IO_DMABUF_IMPORT, "GST_V4L2_IO_DMABUF_IMPORT",
300 v4l2_io_mode = g_enum_register_static ("GstV4l2IOMode", io_modes);
306 gst_v4l2_object_install_properties_helper (GObjectClass * gobject_class,
307 const char *default_device)
309 g_object_class_install_property (gobject_class, PROP_DEVICE,
310 g_param_spec_string ("device", "Device", "Device location",
311 default_device, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
312 g_object_class_install_property (gobject_class, PROP_DEVICE_NAME,
313 g_param_spec_string ("device-name", "Device name",
314 "Name of the device", DEFAULT_PROP_DEVICE_NAME,
315 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
316 g_object_class_install_property (gobject_class, PROP_DEVICE_FD,
317 g_param_spec_int ("device-fd", "File descriptor",
318 "File descriptor of the device", -1, G_MAXINT, DEFAULT_PROP_DEVICE_FD,
319 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
320 g_object_class_install_property (gobject_class, PROP_FLAGS,
321 g_param_spec_flags ("flags", "Flags", "Device type flags",
322 GST_TYPE_V4L2_DEVICE_FLAGS, DEFAULT_PROP_FLAGS,
323 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
326 * GstV4l2Src:brightness:
328 * Picture brightness, or more precisely, the black level
330 g_object_class_install_property (gobject_class, PROP_BRIGHTNESS,
331 g_param_spec_int ("brightness", "Brightness",
332 "Picture brightness, or more precisely, the black level", G_MININT,
334 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
336 * GstV4l2Src:contrast:
338 * Picture contrast or luma gain
340 g_object_class_install_property (gobject_class, PROP_CONTRAST,
341 g_param_spec_int ("contrast", "Contrast",
342 "Picture contrast or luma gain", G_MININT,
344 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
346 * GstV4l2Src:saturation:
348 * Picture color saturation or chroma gain
350 g_object_class_install_property (gobject_class, PROP_SATURATION,
351 g_param_spec_int ("saturation", "Saturation",
352 "Picture color saturation or chroma gain", G_MININT,
354 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
358 * Hue or color balance
360 g_object_class_install_property (gobject_class, PROP_HUE,
361 g_param_spec_int ("hue", "Hue",
362 "Hue or color balance", G_MININT,
364 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
371 g_object_class_install_property (gobject_class, PROP_TV_NORM,
372 g_param_spec_enum ("norm", "TV norm",
374 GST_TYPE_V4L2_TV_NORM, DEFAULT_PROP_TV_NORM,
375 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
378 * GstV4l2Src:io-mode:
382 g_object_class_install_property (gobject_class, PROP_IO_MODE,
383 g_param_spec_enum ("io-mode", "IO mode",
385 GST_TYPE_V4L2_IO_MODE, DEFAULT_PROP_IO_MODE,
386 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
389 * GstV4l2Src:extra-controls:
391 * Additional v4l2 controls for the device. The controls are identified
392 * by the control name (lowercase with '_' for any non-alphanumeric
397 g_object_class_install_property (gobject_class, PROP_EXTRA_CONTROLS,
398 g_param_spec_boxed ("extra-controls", "Extra Controls",
399 "Extra v4l2 controls (CIDs) for the device",
400 GST_TYPE_STRUCTURE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
403 * GstV4l2Src:pixel-aspect-ratio:
405 * The pixel aspect ratio of the device. This overwrites the pixel aspect
406 * ratio queried from the device.
410 g_object_class_install_property (gobject_class, PROP_PIXEL_ASPECT_RATIO,
411 g_param_spec_string ("pixel-aspect-ratio", "Pixel Aspect Ratio",
412 "Overwrite the pixel aspect ratio of the device", "1/1",
413 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
416 * GstV4l2Src:force-aspect-ratio:
418 * When enabled, the pixel aspect ratio queried from the device or set
419 * with the pixel-aspect-ratio property will be enforced.
423 g_object_class_install_property (gobject_class, PROP_FORCE_ASPECT_RATIO,
424 g_param_spec_boolean ("force-aspect-ratio", "Force aspect ratio",
425 "When enabled, the pixel aspect ratio will be enforced", TRUE,
426 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
428 gst_type_mark_as_plugin_api (GST_TYPE_V4L2_DEVICE_FLAGS, 0);
429 gst_type_mark_as_plugin_api (GST_TYPE_V4L2_TV_NORM, 0);
430 gst_type_mark_as_plugin_api (GST_TYPE_V4L2_IO_MODE, 0);
434 gst_v4l2_object_install_m2m_properties_helper (GObjectClass * gobject_class)
436 g_object_class_install_property (gobject_class, PROP_DEVICE,
437 g_param_spec_string ("device", "Device", "Device location",
438 NULL, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
440 g_object_class_install_property (gobject_class, PROP_DEVICE_NAME,
441 g_param_spec_string ("device-name", "Device name",
442 "Name of the device", DEFAULT_PROP_DEVICE_NAME,
443 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
445 g_object_class_install_property (gobject_class, PROP_DEVICE_FD,
446 g_param_spec_int ("device-fd", "File descriptor",
447 "File descriptor of the device", -1, G_MAXINT, DEFAULT_PROP_DEVICE_FD,
448 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
450 g_object_class_install_property (gobject_class, PROP_OUTPUT_IO_MODE,
451 g_param_spec_enum ("output-io-mode", "Output IO mode",
452 "Output side I/O mode (matches sink pad)",
453 GST_TYPE_V4L2_IO_MODE, DEFAULT_PROP_IO_MODE,
454 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
456 g_object_class_install_property (gobject_class, PROP_CAPTURE_IO_MODE,
457 g_param_spec_enum ("capture-io-mode", "Capture IO mode",
458 "Capture I/O mode (matches src pad)",
459 GST_TYPE_V4L2_IO_MODE, DEFAULT_PROP_IO_MODE,
460 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
462 g_object_class_install_property (gobject_class, PROP_EXTRA_CONTROLS,
463 g_param_spec_boxed ("extra-controls", "Extra Controls",
464 "Extra v4l2 controls (CIDs) for the device",
465 GST_TYPE_STRUCTURE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
468 /* Support for 32bit off_t, this wrapper is casting off_t to gint64 */
473 v4l2_mmap_wrapper (gpointer start, gsize length, gint prot, gint flags, gint fd,
476 return v4l2_mmap (start, length, prot, flags, fd, (gint64) offset);
479 #define v4l2_mmap v4l2_mmap_wrapper
481 #endif /* SIZEOF_OFF_T < 8 */
482 #endif /* HAVE_LIBV4L2 */
485 gst_v4l2_object_new (GstElement * element,
486 GstObject * debug_object,
487 enum v4l2_buf_type type,
488 const char *default_device,
489 GstV4l2GetInOutFunction get_in_out_func,
490 GstV4l2SetInOutFunction set_in_out_func,
491 GstV4l2UpdateFpsFunction update_fps_func)
493 GstV4l2Object *v4l2object;
496 * some default values
498 v4l2object = g_new0 (GstV4l2Object, 1);
500 v4l2object->type = type;
501 v4l2object->formats = NULL;
503 v4l2object->element = element;
504 v4l2object->dbg_obj = debug_object;
505 v4l2object->get_in_out_func = get_in_out_func;
506 v4l2object->set_in_out_func = set_in_out_func;
507 v4l2object->update_fps_func = update_fps_func;
509 v4l2object->video_fd = -1;
510 v4l2object->active = FALSE;
511 v4l2object->videodev = g_strdup (default_device);
513 v4l2object->norms = NULL;
514 v4l2object->channels = NULL;
515 v4l2object->colors = NULL;
517 v4l2object->keep_aspect = TRUE;
519 v4l2object->n_v4l2_planes = 0;
521 v4l2object->no_initial_format = FALSE;
523 /* We now disable libv4l2 by default, but have an env to enable it. */
525 if (g_getenv ("GST_V4L2_USE_LIBV4L2")) {
526 v4l2object->fd_open = v4l2_fd_open;
527 v4l2object->close = v4l2_close;
528 v4l2object->dup = v4l2_dup;
529 v4l2object->ioctl = v4l2_ioctl;
530 v4l2object->read = v4l2_read;
531 v4l2object->mmap = v4l2_mmap;
532 v4l2object->munmap = v4l2_munmap;
536 v4l2object->fd_open = NULL;
537 v4l2object->close = close;
538 v4l2object->dup = dup;
539 v4l2object->ioctl = ioctl;
540 v4l2object->read = read;
541 v4l2object->mmap = mmap;
542 v4l2object->munmap = munmap;
548 static gboolean gst_v4l2_object_clear_format_list (GstV4l2Object * v4l2object);
552 gst_v4l2_object_destroy (GstV4l2Object * v4l2object)
554 g_return_if_fail (v4l2object != NULL);
556 g_free (v4l2object->videodev);
557 g_free (v4l2object->par);
558 g_free (v4l2object->channel);
560 if (v4l2object->formats) {
561 gst_v4l2_object_clear_format_list (v4l2object);
564 if (v4l2object->probed_caps) {
565 gst_caps_unref (v4l2object->probed_caps);
568 if (v4l2object->extra_controls) {
569 gst_structure_free (v4l2object->extra_controls);
577 gst_v4l2_object_clear_format_list (GstV4l2Object * v4l2object)
579 g_slist_foreach (v4l2object->formats, (GFunc) g_free, NULL);
580 g_slist_free (v4l2object->formats);
581 v4l2object->formats = NULL;
587 gst_v4l2_object_prop_to_cid (guint prop_id)
592 case PROP_BRIGHTNESS:
593 cid = V4L2_CID_BRIGHTNESS;
596 cid = V4L2_CID_CONTRAST;
598 case PROP_SATURATION:
599 cid = V4L2_CID_SATURATION;
605 GST_WARNING ("unmapped property id: %d", prop_id);
612 gst_v4l2_object_set_property_helper (GstV4l2Object * v4l2object,
613 guint prop_id, const GValue * value, GParamSpec * pspec)
617 g_free (v4l2object->videodev);
618 v4l2object->videodev = g_value_dup_string (value);
620 case PROP_BRIGHTNESS:
622 case PROP_SATURATION:
625 gint cid = gst_v4l2_object_prop_to_cid (prop_id);
628 if (GST_V4L2_IS_OPEN (v4l2object)) {
629 gst_v4l2_set_attribute (v4l2object, cid, g_value_get_int (value));
636 v4l2object->tv_norm = g_value_get_enum (value);
640 if (GST_V4L2_IS_OPEN (v4l2object)) {
641 GstTuner *tuner = GST_TUNER (v4l2object->element);
642 GstTunerChannel *channel = gst_tuner_find_channel_by_name (tuner,
643 (gchar *) g_value_get_string (value));
646 /* like gst_tuner_set_channel (tuner, channel)
647 without g_object_notify */
648 gst_v4l2_tuner_set_channel (v4l2object, channel);
651 g_free (v4l2object->channel);
652 v4l2object->channel = g_value_dup_string (value);
656 if (GST_V4L2_IS_OPEN (v4l2object)) {
657 GstTuner *tuner = GST_TUNER (v4l2object->element);
658 GstTunerChannel *channel = gst_tuner_get_channel (tuner);
661 GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
663 gst_tuner_set_frequency (tuner, channel, g_value_get_ulong (value))
664 without g_object_notify */
665 gst_v4l2_tuner_set_frequency (v4l2object, channel,
666 g_value_get_ulong (value));
669 v4l2object->frequency = g_value_get_ulong (value);
675 v4l2object->req_mode = g_value_get_enum (value);
677 case PROP_CAPTURE_IO_MODE:
678 g_return_val_if_fail (!V4L2_TYPE_IS_OUTPUT (v4l2object->type), FALSE);
679 v4l2object->req_mode = g_value_get_enum (value);
681 case PROP_OUTPUT_IO_MODE:
682 g_return_val_if_fail (V4L2_TYPE_IS_OUTPUT (v4l2object->type), FALSE);
683 v4l2object->req_mode = g_value_get_enum (value);
685 case PROP_EXTRA_CONTROLS:{
686 const GstStructure *s = gst_value_get_structure (value);
688 if (v4l2object->extra_controls)
689 gst_structure_free (v4l2object->extra_controls);
691 v4l2object->extra_controls = s ? gst_structure_copy (s) : NULL;
692 if (GST_V4L2_IS_OPEN (v4l2object))
693 gst_v4l2_set_controls (v4l2object, v4l2object->extra_controls);
696 case PROP_PIXEL_ASPECT_RATIO:
697 if (v4l2object->par) {
698 g_value_unset (v4l2object->par);
699 g_free (v4l2object->par);
701 v4l2object->par = g_new0 (GValue, 1);
702 g_value_init (v4l2object->par, GST_TYPE_FRACTION);
703 if (!g_value_transform (value, v4l2object->par)) {
704 g_warning ("Could not transform string to aspect ratio");
705 gst_value_set_fraction (v4l2object->par, 1, 1);
708 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "set PAR to %d/%d",
709 gst_value_get_fraction_numerator (v4l2object->par),
710 gst_value_get_fraction_denominator (v4l2object->par));
712 case PROP_FORCE_ASPECT_RATIO:
713 v4l2object->keep_aspect = g_value_get_boolean (value);
724 gst_v4l2_object_get_property_helper (GstV4l2Object * v4l2object,
725 guint prop_id, GValue * value, GParamSpec * pspec)
729 g_value_set_string (value, v4l2object->videodev);
731 case PROP_DEVICE_NAME:
733 const guchar *name = NULL;
735 if (GST_V4L2_IS_OPEN (v4l2object))
736 name = v4l2object->vcap.card;
738 g_value_set_string (value, (gchar *) name);
743 if (GST_V4L2_IS_OPEN (v4l2object))
744 g_value_set_int (value, v4l2object->video_fd);
746 g_value_set_int (value, DEFAULT_PROP_DEVICE_FD);
753 if (GST_V4L2_IS_OPEN (v4l2object)) {
754 flags |= v4l2object->device_caps &
755 (V4L2_CAP_VIDEO_CAPTURE |
756 V4L2_CAP_VIDEO_OUTPUT |
757 V4L2_CAP_VIDEO_OVERLAY |
758 V4L2_CAP_VBI_CAPTURE |
759 V4L2_CAP_VBI_OUTPUT | V4L2_CAP_TUNER | V4L2_CAP_AUDIO);
761 if (v4l2object->device_caps & V4L2_CAP_VIDEO_CAPTURE_MPLANE)
762 flags |= V4L2_CAP_VIDEO_CAPTURE;
764 if (v4l2object->device_caps & V4L2_CAP_VIDEO_OUTPUT_MPLANE)
765 flags |= V4L2_CAP_VIDEO_OUTPUT;
767 g_value_set_flags (value, flags);
770 case PROP_BRIGHTNESS:
772 case PROP_SATURATION:
775 gint cid = gst_v4l2_object_prop_to_cid (prop_id);
778 if (GST_V4L2_IS_OPEN (v4l2object)) {
780 if (gst_v4l2_get_attribute (v4l2object, cid, &v)) {
781 g_value_set_int (value, v);
789 g_value_set_enum (value, v4l2object->tv_norm);
792 g_value_set_enum (value, v4l2object->req_mode);
794 case PROP_CAPTURE_IO_MODE:
795 g_return_val_if_fail (!V4L2_TYPE_IS_OUTPUT (v4l2object->type), FALSE);
796 g_value_set_enum (value, v4l2object->req_mode);
798 case PROP_OUTPUT_IO_MODE:
799 g_return_val_if_fail (V4L2_TYPE_IS_OUTPUT (v4l2object->type), FALSE);
800 g_value_set_enum (value, v4l2object->req_mode);
802 case PROP_EXTRA_CONTROLS:
803 gst_value_set_structure (value, v4l2object->extra_controls);
805 case PROP_PIXEL_ASPECT_RATIO:
807 g_value_transform (v4l2object->par, value);
809 case PROP_FORCE_ASPECT_RATIO:
810 g_value_set_boolean (value, v4l2object->keep_aspect);
820 gst_v4l2_get_driver_min_buffers (GstV4l2Object * v4l2object)
822 struct v4l2_control control = { 0, };
824 g_return_if_fail (GST_V4L2_IS_OPEN (v4l2object));
826 if (V4L2_TYPE_IS_OUTPUT (v4l2object->type))
827 control.id = V4L2_CID_MIN_BUFFERS_FOR_OUTPUT;
829 control.id = V4L2_CID_MIN_BUFFERS_FOR_CAPTURE;
831 if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_G_CTRL, &control) == 0) {
832 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
833 "driver requires a minimum of %d buffers", control.value);
834 v4l2object->min_buffers = control.value;
836 v4l2object->min_buffers = 0;
841 gst_v4l2_set_defaults (GstV4l2Object * v4l2object)
843 GstTunerNorm *norm = NULL;
844 GstTunerChannel *channel = NULL;
847 if (!GST_IS_TUNER (v4l2object->element))
850 tuner = GST_TUNER (v4l2object->element);
852 if (v4l2object->tv_norm)
853 norm = gst_v4l2_tuner_get_norm_by_std_id (v4l2object, v4l2object->tv_norm);
854 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "tv_norm=0x%" G_GINT64_MODIFIER "x, "
855 "norm=%p", (guint64) v4l2object->tv_norm, norm);
857 gst_tuner_set_norm (tuner, norm);
860 GST_TUNER_NORM (gst_tuner_get_norm (GST_TUNER (v4l2object->element)));
862 v4l2object->tv_norm =
863 gst_v4l2_tuner_get_std_id_by_norm (v4l2object, norm);
864 gst_tuner_norm_changed (tuner, norm);
868 if (v4l2object->channel)
869 channel = gst_tuner_find_channel_by_name (tuner, v4l2object->channel);
871 gst_tuner_set_channel (tuner, channel);
874 GST_TUNER_CHANNEL (gst_tuner_get_channel (GST_TUNER
875 (v4l2object->element)));
877 g_free (v4l2object->channel);
878 v4l2object->channel = g_strdup (channel->label);
879 gst_tuner_channel_changed (tuner, channel);
884 && GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
885 if (v4l2object->frequency != 0) {
886 gst_tuner_set_frequency (tuner, channel, v4l2object->frequency);
888 v4l2object->frequency = gst_tuner_get_frequency (tuner, channel);
889 if (v4l2object->frequency == 0) {
891 gst_tuner_set_frequency (tuner, channel, 1000);
899 gst_v4l2_object_open (GstV4l2Object * v4l2object, GstV4l2Error * error)
901 if (gst_v4l2_open (v4l2object, error))
902 gst_v4l2_set_defaults (v4l2object);
910 gst_v4l2_object_open_shared (GstV4l2Object * v4l2object, GstV4l2Object * other)
914 ret = gst_v4l2_dup (v4l2object, other);
920 gst_v4l2_object_close (GstV4l2Object * v4l2object)
922 if (!gst_v4l2_close (v4l2object))
925 gst_caps_replace (&v4l2object->probed_caps, NULL);
927 /* reset our copy of the device caps */
928 v4l2object->device_caps = 0;
930 if (v4l2object->formats) {
931 gst_v4l2_object_clear_format_list (v4l2object);
934 if (v4l2object->par) {
935 g_value_unset (v4l2object->par);
936 g_free (v4l2object->par);
937 v4l2object->par = NULL;
940 if (v4l2object->channel) {
941 g_free (v4l2object->channel);
942 v4l2object->channel = NULL;
948 static struct v4l2_fmtdesc *
949 gst_v4l2_object_get_format_from_fourcc (GstV4l2Object * v4l2object,
952 struct v4l2_fmtdesc *fmt;
958 walk = gst_v4l2_object_get_format_list (v4l2object);
960 fmt = (struct v4l2_fmtdesc *) walk->data;
961 if (fmt->pixelformat == fourcc)
963 /* special case for jpeg */
964 if (fmt->pixelformat == V4L2_PIX_FMT_MJPEG ||
965 fmt->pixelformat == V4L2_PIX_FMT_JPEG ||
966 fmt->pixelformat == V4L2_PIX_FMT_PJPG) {
967 if (fourcc == V4L2_PIX_FMT_JPEG || fourcc == V4L2_PIX_FMT_MJPEG ||
968 fourcc == V4L2_PIX_FMT_PJPG) {
972 walk = g_slist_next (walk);
980 /* complete made up ranking, the values themselves are meaningless */
981 /* These ranks MUST be X such that X<<15 fits on a signed int - see
982 the comment at the end of gst_v4l2_object_format_get_rank. */
983 #define YUV_BASE_RANK 1000
984 #define JPEG_BASE_RANK 500
985 #define DV_BASE_RANK 200
986 #define RGB_BASE_RANK 100
987 #define YUV_ODD_BASE_RANK 50
988 #define RGB_ODD_BASE_RANK 25
989 #define BAYER_BASE_RANK 15
990 #define S910_BASE_RANK 10
991 #define GREY_BASE_RANK 5
992 #define PWC_BASE_RANK 1
995 gst_v4l2_object_format_get_rank (const struct v4l2_fmtdesc *fmt)
997 guint32 fourcc = fmt->pixelformat;
998 gboolean emulated = ((fmt->flags & V4L2_FMT_FLAG_EMULATED) != 0);
1002 case V4L2_PIX_FMT_MJPEG:
1003 case V4L2_PIX_FMT_PJPG:
1004 rank = JPEG_BASE_RANK;
1006 case V4L2_PIX_FMT_JPEG:
1007 rank = JPEG_BASE_RANK + 1;
1009 case V4L2_PIX_FMT_MPEG: /* MPEG */
1010 rank = JPEG_BASE_RANK + 2;
1013 case V4L2_PIX_FMT_RGB332:
1014 case V4L2_PIX_FMT_ARGB555:
1015 case V4L2_PIX_FMT_XRGB555:
1016 case V4L2_PIX_FMT_RGB555:
1017 case V4L2_PIX_FMT_ARGB555X:
1018 case V4L2_PIX_FMT_XRGB555X:
1019 case V4L2_PIX_FMT_RGB555X:
1020 case V4L2_PIX_FMT_BGR666:
1021 case V4L2_PIX_FMT_RGB565:
1022 case V4L2_PIX_FMT_RGB565X:
1023 case V4L2_PIX_FMT_RGB444:
1024 case V4L2_PIX_FMT_Y4:
1025 case V4L2_PIX_FMT_Y6:
1026 case V4L2_PIX_FMT_Y10:
1027 case V4L2_PIX_FMT_Y12:
1028 case V4L2_PIX_FMT_Y10BPACK:
1029 case V4L2_PIX_FMT_YUV555:
1030 case V4L2_PIX_FMT_YUV565:
1031 case V4L2_PIX_FMT_YUV32:
1032 case V4L2_PIX_FMT_NV12MT_16X16:
1033 case V4L2_PIX_FMT_NV42:
1034 case V4L2_PIX_FMT_H264_MVC:
1035 rank = RGB_ODD_BASE_RANK;
1038 case V4L2_PIX_FMT_RGB24:
1039 case V4L2_PIX_FMT_BGR24:
1040 rank = RGB_BASE_RANK - 1;
1043 case V4L2_PIX_FMT_RGB32:
1044 case V4L2_PIX_FMT_BGR32:
1045 case V4L2_PIX_FMT_ABGR32:
1046 case V4L2_PIX_FMT_XBGR32:
1047 case V4L2_PIX_FMT_BGRA32:
1048 case V4L2_PIX_FMT_BGRX32:
1049 case V4L2_PIX_FMT_RGBA32:
1050 case V4L2_PIX_FMT_RGBX32:
1051 case V4L2_PIX_FMT_ARGB32:
1052 case V4L2_PIX_FMT_XRGB32:
1053 rank = RGB_BASE_RANK;
1056 case V4L2_PIX_FMT_GREY: /* 8 Greyscale */
1057 rank = GREY_BASE_RANK;
1060 case V4L2_PIX_FMT_NV12MT: /* NV12 64x32 tile */
1061 case V4L2_PIX_FMT_NV21: /* 12 Y/CrCb 4:2:0 */
1062 case V4L2_PIX_FMT_NV21M: /* Same as NV21 */
1063 case V4L2_PIX_FMT_YYUV: /* 16 YUV 4:2:2 */
1064 case V4L2_PIX_FMT_HI240: /* 8 8-bit color */
1065 case V4L2_PIX_FMT_NV16: /* 16 Y/CbCr 4:2:2 */
1066 case V4L2_PIX_FMT_NV16M: /* Same as NV16 */
1067 case V4L2_PIX_FMT_NV61: /* 16 Y/CrCb 4:2:2 */
1068 case V4L2_PIX_FMT_NV61M: /* Same as NV61 */
1069 case V4L2_PIX_FMT_NV24: /* 24 Y/CrCb 4:4:4 */
1070 rank = YUV_ODD_BASE_RANK;
1073 case V4L2_PIX_FMT_YVU410: /* YVU9, 9 bits per pixel */
1074 rank = YUV_BASE_RANK + 3;
1076 case V4L2_PIX_FMT_YUV410: /* YUV9, 9 bits per pixel */
1077 rank = YUV_BASE_RANK + 2;
1079 case V4L2_PIX_FMT_YUV420: /* I420, 12 bits per pixel */
1080 case V4L2_PIX_FMT_YUV420M:
1081 rank = YUV_BASE_RANK + 7;
1083 case V4L2_PIX_FMT_NV12: /* Y/CbCr 4:2:0, 12 bits per pixel */
1084 case V4L2_PIX_FMT_NV12M: /* Same as NV12 */
1085 rank = YUV_BASE_RANK + 8;
1087 case V4L2_PIX_FMT_YUYV: /* YUY2, 16 bits per pixel */
1088 rank = YUV_BASE_RANK + 10;
1090 case V4L2_PIX_FMT_YVU420: /* YV12, 12 bits per pixel */
1091 rank = YUV_BASE_RANK + 6;
1093 case V4L2_PIX_FMT_UYVY: /* UYVY, 16 bits per pixel */
1094 rank = YUV_BASE_RANK + 9;
1096 case V4L2_PIX_FMT_YUV444:
1097 rank = YUV_BASE_RANK + 6;
1099 case V4L2_PIX_FMT_Y41P: /* Y41P, 12 bits per pixel */
1100 rank = YUV_BASE_RANK + 5;
1102 case V4L2_PIX_FMT_YUV411P: /* Y41B, 12 bits per pixel */
1103 rank = YUV_BASE_RANK + 4;
1105 case V4L2_PIX_FMT_YUV422P: /* Y42B, 16 bits per pixel */
1106 rank = YUV_BASE_RANK + 8;
1109 case V4L2_PIX_FMT_DV:
1110 rank = DV_BASE_RANK;
1113 case V4L2_PIX_FMT_WNVA: /* Winnov hw compress */
1117 case V4L2_PIX_FMT_SBGGR8:
1118 case V4L2_PIX_FMT_SGBRG8:
1119 case V4L2_PIX_FMT_SGRBG8:
1120 case V4L2_PIX_FMT_SRGGB8:
1121 rank = BAYER_BASE_RANK;
1124 case V4L2_PIX_FMT_SN9C10X:
1125 rank = S910_BASE_RANK;
1128 case V4L2_PIX_FMT_PWC1:
1129 rank = PWC_BASE_RANK;
1131 case V4L2_PIX_FMT_PWC2:
1132 rank = PWC_BASE_RANK;
1140 /* All ranks are below 1<<15 so a shift by 15
1141 * will a) make all non-emulated formats larger
1142 * than emulated and b) will not overflow
1153 format_cmp_func (gconstpointer a, gconstpointer b)
1155 const struct v4l2_fmtdesc *fa = a;
1156 const struct v4l2_fmtdesc *fb = b;
1158 if (fa->pixelformat == fb->pixelformat)
1161 return gst_v4l2_object_format_get_rank (fb) -
1162 gst_v4l2_object_format_get_rank (fa);
1165 /******************************************************
1166 * gst_v4l2_object_fill_format_list():
1167 * create list of supported capture formats
1168 * return value: TRUE on success, FALSE on error
1169 ******************************************************/
1171 gst_v4l2_object_fill_format_list (GstV4l2Object * v4l2object,
1172 enum v4l2_buf_type type)
1175 struct v4l2_fmtdesc *format;
1177 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "getting src format enumerations");
1179 /* format enumeration */
1181 format = g_new0 (struct v4l2_fmtdesc, 1);
1184 format->type = type;
1186 if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_ENUM_FMT, format) < 0) {
1187 if (errno == EINVAL) {
1189 break; /* end of enumeration */
1195 GST_LOG_OBJECT (v4l2object->dbg_obj, "index: %u", format->index);
1196 GST_LOG_OBJECT (v4l2object->dbg_obj, "type: %d", format->type);
1197 GST_LOG_OBJECT (v4l2object->dbg_obj, "flags: %08x", format->flags);
1198 GST_LOG_OBJECT (v4l2object->dbg_obj, "description: '%s'",
1199 format->description);
1200 GST_LOG_OBJECT (v4l2object->dbg_obj, "pixelformat: %" GST_FOURCC_FORMAT,
1201 GST_FOURCC_ARGS (format->pixelformat));
1203 /* sort formats according to our preference; we do this, because caps
1204 * are probed in the order the formats are in the list, and the order of
1205 * formats in the final probed caps matters for things like fixation */
1206 v4l2object->formats = g_slist_insert_sorted (v4l2object->formats, format,
1207 (GCompareFunc) format_cmp_func);
1210 #ifndef GST_DISABLE_GST_DEBUG
1214 GST_INFO_OBJECT (v4l2object->dbg_obj, "got %d format(s):", n);
1215 for (l = v4l2object->formats; l != NULL; l = l->next) {
1218 GST_INFO_OBJECT (v4l2object->dbg_obj,
1219 " %" GST_FOURCC_FORMAT "%s", GST_FOURCC_ARGS (format->pixelformat),
1220 ((format->flags & V4L2_FMT_FLAG_EMULATED)) ? " (emulated)" : "");
1232 if (v4l2object->element)
1235 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
1236 (_("Failed to enumerate possible video formats device '%s' can work "
1237 "with"), v4l2object->videodev),
1238 ("Failed to get number %d in pixelformat enumeration for %s. (%d - %s)",
1239 n, v4l2object->videodev, errno, g_strerror (errno)));
1246 * Get the list of supported capture formats, a list of
1247 * `struct v4l2_fmtdesc`.
1250 gst_v4l2_object_get_format_list (GstV4l2Object * v4l2object)
1252 if (!v4l2object->formats) {
1254 /* check usual way */
1255 gst_v4l2_object_fill_format_list (v4l2object, v4l2object->type);
1257 /* if our driver supports multi-planar
1258 * and if formats are still empty then we can workaround driver bug
1259 * by also looking up formats as if our device was not supporting
1261 if (!v4l2object->formats) {
1262 switch (v4l2object->type) {
1263 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1264 gst_v4l2_object_fill_format_list (v4l2object,
1265 V4L2_BUF_TYPE_VIDEO_CAPTURE);
1268 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1269 gst_v4l2_object_fill_format_list (v4l2object,
1270 V4L2_BUF_TYPE_VIDEO_OUTPUT);
1278 return v4l2object->formats;
1281 static GstVideoFormat
1282 gst_v4l2_object_v4l2fourcc_to_video_format (guint32 fourcc)
1284 GstVideoFormat format;
1287 case V4L2_PIX_FMT_GREY: /* 8 Greyscale */
1288 format = GST_VIDEO_FORMAT_GRAY8;
1290 case V4L2_PIX_FMT_Y16:
1291 format = GST_VIDEO_FORMAT_GRAY16_LE;
1293 case V4L2_PIX_FMT_Y16_BE:
1294 format = GST_VIDEO_FORMAT_GRAY16_BE;
1296 case V4L2_PIX_FMT_XRGB555:
1297 case V4L2_PIX_FMT_RGB555:
1298 format = GST_VIDEO_FORMAT_RGB15;
1300 case V4L2_PIX_FMT_XRGB555X:
1301 case V4L2_PIX_FMT_RGB555X:
1302 format = GST_VIDEO_FORMAT_BGR15;
1304 case V4L2_PIX_FMT_RGB565:
1305 format = GST_VIDEO_FORMAT_RGB16;
1307 case V4L2_PIX_FMT_RGB24:
1308 format = GST_VIDEO_FORMAT_RGB;
1310 case V4L2_PIX_FMT_BGR24:
1311 format = GST_VIDEO_FORMAT_BGR;
1313 case V4L2_PIX_FMT_XRGB32:
1314 case V4L2_PIX_FMT_RGB32:
1315 format = GST_VIDEO_FORMAT_xRGB;
1317 case V4L2_PIX_FMT_RGBX32:
1318 format = GST_VIDEO_FORMAT_RGBx;
1320 case V4L2_PIX_FMT_XBGR32:
1321 case V4L2_PIX_FMT_BGR32:
1322 format = GST_VIDEO_FORMAT_BGRx;
1324 case V4L2_PIX_FMT_BGRX32:
1325 format = GST_VIDEO_FORMAT_xBGR;
1327 case V4L2_PIX_FMT_ABGR32:
1328 format = GST_VIDEO_FORMAT_BGRA;
1330 case V4L2_PIX_FMT_BGRA32:
1331 format = GST_VIDEO_FORMAT_ABGR;
1333 case V4L2_PIX_FMT_RGBA32:
1334 format = GST_VIDEO_FORMAT_RGBA;
1336 case V4L2_PIX_FMT_ARGB32:
1337 format = GST_VIDEO_FORMAT_ARGB;
1339 case V4L2_PIX_FMT_NV12:
1340 case V4L2_PIX_FMT_NV12M:
1341 format = GST_VIDEO_FORMAT_NV12;
1343 case V4L2_PIX_FMT_NV12MT:
1344 format = GST_VIDEO_FORMAT_NV12_64Z32;
1346 case V4L2_PIX_FMT_NV21:
1347 case V4L2_PIX_FMT_NV21M:
1348 format = GST_VIDEO_FORMAT_NV21;
1350 case V4L2_PIX_FMT_YVU410:
1351 format = GST_VIDEO_FORMAT_YVU9;
1353 case V4L2_PIX_FMT_YUV410:
1354 format = GST_VIDEO_FORMAT_YUV9;
1356 case V4L2_PIX_FMT_YUV420:
1357 case V4L2_PIX_FMT_YUV420M:
1358 format = GST_VIDEO_FORMAT_I420;
1360 case V4L2_PIX_FMT_YUYV:
1361 format = GST_VIDEO_FORMAT_YUY2;
1363 case V4L2_PIX_FMT_YVU420:
1364 format = GST_VIDEO_FORMAT_YV12;
1366 case V4L2_PIX_FMT_UYVY:
1367 format = GST_VIDEO_FORMAT_UYVY;
1369 case V4L2_PIX_FMT_YUV411P:
1370 format = GST_VIDEO_FORMAT_Y41B;
1372 case V4L2_PIX_FMT_YUV422P:
1373 format = GST_VIDEO_FORMAT_Y42B;
1375 case V4L2_PIX_FMT_YVYU:
1376 format = GST_VIDEO_FORMAT_YVYU;
1378 case V4L2_PIX_FMT_NV16:
1379 case V4L2_PIX_FMT_NV16M:
1380 format = GST_VIDEO_FORMAT_NV16;
1382 case V4L2_PIX_FMT_NV61:
1383 case V4L2_PIX_FMT_NV61M:
1384 format = GST_VIDEO_FORMAT_NV61;
1386 case V4L2_PIX_FMT_NV24:
1387 format = GST_VIDEO_FORMAT_NV24;
1390 format = GST_VIDEO_FORMAT_UNKNOWN;
1398 gst_v4l2_object_v4l2fourcc_is_rgb (guint32 fourcc)
1400 gboolean ret = FALSE;
1403 case V4L2_PIX_FMT_XRGB555:
1404 case V4L2_PIX_FMT_RGB555:
1405 case V4L2_PIX_FMT_XRGB555X:
1406 case V4L2_PIX_FMT_RGB555X:
1407 case V4L2_PIX_FMT_RGB565:
1408 case V4L2_PIX_FMT_RGB24:
1409 case V4L2_PIX_FMT_BGR24:
1410 case V4L2_PIX_FMT_XRGB32:
1411 case V4L2_PIX_FMT_RGB32:
1412 case V4L2_PIX_FMT_RGBA32:
1413 case V4L2_PIX_FMT_RGBX32:
1414 case V4L2_PIX_FMT_XBGR32:
1415 case V4L2_PIX_FMT_BGR32:
1416 case V4L2_PIX_FMT_BGRA32:
1417 case V4L2_PIX_FMT_BGRX32:
1418 case V4L2_PIX_FMT_ABGR32:
1419 case V4L2_PIX_FMT_ARGB32:
1420 case V4L2_PIX_FMT_SBGGR8:
1421 case V4L2_PIX_FMT_SGBRG8:
1422 case V4L2_PIX_FMT_SGRBG8:
1423 case V4L2_PIX_FMT_SRGGB8:
1433 static GstStructure *
1434 gst_v4l2_object_v4l2fourcc_to_bare_struct (guint32 fourcc)
1436 GstStructure *structure = NULL;
1439 case V4L2_PIX_FMT_MJPEG: /* Motion-JPEG */
1440 case V4L2_PIX_FMT_PJPG: /* Progressive-JPEG */
1441 case V4L2_PIX_FMT_JPEG: /* JFIF JPEG */
1442 structure = gst_structure_new_empty ("image/jpeg");
1444 case V4L2_PIX_FMT_MPEG1:
1445 structure = gst_structure_new ("video/mpeg",
1446 "mpegversion", G_TYPE_INT, 1, NULL);
1448 case V4L2_PIX_FMT_MPEG2:
1449 structure = gst_structure_new ("video/mpeg",
1450 "mpegversion", G_TYPE_INT, 2, NULL);
1452 case V4L2_PIX_FMT_MPEG4:
1453 case V4L2_PIX_FMT_XVID:
1454 structure = gst_structure_new ("video/mpeg",
1455 "mpegversion", G_TYPE_INT, 4, "systemstream",
1456 G_TYPE_BOOLEAN, FALSE, NULL);
1458 case V4L2_PIX_FMT_FWHT:
1459 structure = gst_structure_new_empty ("video/x-fwht");
1461 case V4L2_PIX_FMT_H263:
1462 structure = gst_structure_new ("video/x-h263",
1463 "variant", G_TYPE_STRING, "itu", NULL);
1465 case V4L2_PIX_FMT_H264: /* H.264 */
1466 structure = gst_structure_new ("video/x-h264",
1467 "stream-format", G_TYPE_STRING, "byte-stream", "alignment",
1468 G_TYPE_STRING, "au", NULL);
1470 case V4L2_PIX_FMT_H264_NO_SC:
1471 structure = gst_structure_new ("video/x-h264",
1472 "stream-format", G_TYPE_STRING, "avc", "alignment",
1473 G_TYPE_STRING, "au", NULL);
1475 case V4L2_PIX_FMT_HEVC: /* H.265 */
1476 structure = gst_structure_new ("video/x-h265",
1477 "stream-format", G_TYPE_STRING, "byte-stream", "alignment",
1478 G_TYPE_STRING, "au", NULL);
1480 case V4L2_PIX_FMT_VC1_ANNEX_G:
1481 case V4L2_PIX_FMT_VC1_ANNEX_L:
1482 structure = gst_structure_new ("video/x-wmv",
1483 "wmvversion", G_TYPE_INT, 3, "format", G_TYPE_STRING, "WVC1", NULL);
1485 case V4L2_PIX_FMT_VP8:
1486 structure = gst_structure_new_empty ("video/x-vp8");
1488 case V4L2_PIX_FMT_VP9:
1489 structure = gst_structure_new_empty ("video/x-vp9");
1491 case V4L2_PIX_FMT_GREY: /* 8 Greyscale */
1492 case V4L2_PIX_FMT_Y16:
1493 case V4L2_PIX_FMT_Y16_BE:
1494 case V4L2_PIX_FMT_XRGB555:
1495 case V4L2_PIX_FMT_RGB555:
1496 case V4L2_PIX_FMT_XRGB555X:
1497 case V4L2_PIX_FMT_RGB555X:
1498 case V4L2_PIX_FMT_RGB565:
1499 case V4L2_PIX_FMT_RGB24:
1500 case V4L2_PIX_FMT_BGR24:
1501 case V4L2_PIX_FMT_RGB32:
1502 case V4L2_PIX_FMT_XRGB32:
1503 case V4L2_PIX_FMT_ARGB32:
1504 case V4L2_PIX_FMT_RGBX32:
1505 case V4L2_PIX_FMT_RGBA32:
1506 case V4L2_PIX_FMT_BGR32:
1507 case V4L2_PIX_FMT_BGRX32:
1508 case V4L2_PIX_FMT_BGRA32:
1509 case V4L2_PIX_FMT_XBGR32:
1510 case V4L2_PIX_FMT_ABGR32:
1511 case V4L2_PIX_FMT_NV12: /* 12 Y/CbCr 4:2:0 */
1512 case V4L2_PIX_FMT_NV12M:
1513 case V4L2_PIX_FMT_NV12MT:
1514 case V4L2_PIX_FMT_NV21: /* 12 Y/CrCb 4:2:0 */
1515 case V4L2_PIX_FMT_NV21M:
1516 case V4L2_PIX_FMT_NV16: /* 16 Y/CbCr 4:2:2 */
1517 case V4L2_PIX_FMT_NV16M:
1518 case V4L2_PIX_FMT_NV61: /* 16 Y/CrCb 4:2:2 */
1519 case V4L2_PIX_FMT_NV61M:
1520 case V4L2_PIX_FMT_NV24: /* 24 Y/CrCb 4:4:4 */
1521 case V4L2_PIX_FMT_YVU410:
1522 case V4L2_PIX_FMT_YUV410:
1523 case V4L2_PIX_FMT_YUV420: /* I420/IYUV */
1524 case V4L2_PIX_FMT_YUV420M:
1525 case V4L2_PIX_FMT_YUYV:
1526 case V4L2_PIX_FMT_YVU420:
1527 case V4L2_PIX_FMT_UYVY:
1528 case V4L2_PIX_FMT_YUV422P:
1529 case V4L2_PIX_FMT_YVYU:
1530 case V4L2_PIX_FMT_YUV411P:{
1531 GstVideoFormat format;
1532 format = gst_v4l2_object_v4l2fourcc_to_video_format (fourcc);
1533 if (format != GST_VIDEO_FORMAT_UNKNOWN)
1534 structure = gst_structure_new ("video/x-raw",
1535 "format", G_TYPE_STRING, gst_video_format_to_string (format), NULL);
1538 case V4L2_PIX_FMT_DV:
1540 gst_structure_new ("video/x-dv", "systemstream", G_TYPE_BOOLEAN, TRUE,
1543 case V4L2_PIX_FMT_MPEG: /* MPEG */
1544 structure = gst_structure_new ("video/mpegts",
1545 "systemstream", G_TYPE_BOOLEAN, TRUE, NULL);
1547 case V4L2_PIX_FMT_WNVA: /* Winnov hw compress */
1549 case V4L2_PIX_FMT_SBGGR8:
1550 case V4L2_PIX_FMT_SGBRG8:
1551 case V4L2_PIX_FMT_SGRBG8:
1552 case V4L2_PIX_FMT_SRGGB8:
1553 structure = gst_structure_new ("video/x-bayer", "format", G_TYPE_STRING,
1554 fourcc == V4L2_PIX_FMT_SBGGR8 ? "bggr" :
1555 fourcc == V4L2_PIX_FMT_SGBRG8 ? "gbrg" :
1556 fourcc == V4L2_PIX_FMT_SGRBG8 ? "grbg" :
1557 /* fourcc == V4L2_PIX_FMT_SRGGB8 ? */ "rggb", NULL);
1559 case V4L2_PIX_FMT_SN9C10X:
1560 structure = gst_structure_new_empty ("video/x-sonix");
1562 case V4L2_PIX_FMT_PWC1:
1563 structure = gst_structure_new_empty ("video/x-pwc1");
1565 case V4L2_PIX_FMT_PWC2:
1566 structure = gst_structure_new_empty ("video/x-pwc2");
1568 case V4L2_PIX_FMT_RGB332:
1569 case V4L2_PIX_FMT_BGR666:
1570 case V4L2_PIX_FMT_ARGB555X:
1571 case V4L2_PIX_FMT_RGB565X:
1572 case V4L2_PIX_FMT_RGB444:
1573 case V4L2_PIX_FMT_YYUV: /* 16 YUV 4:2:2 */
1574 case V4L2_PIX_FMT_HI240: /* 8 8-bit color */
1575 case V4L2_PIX_FMT_Y4:
1576 case V4L2_PIX_FMT_Y6:
1577 case V4L2_PIX_FMT_Y10:
1578 case V4L2_PIX_FMT_Y12:
1579 case V4L2_PIX_FMT_Y10BPACK:
1580 case V4L2_PIX_FMT_YUV444:
1581 case V4L2_PIX_FMT_YUV555:
1582 case V4L2_PIX_FMT_YUV565:
1583 case V4L2_PIX_FMT_Y41P:
1584 case V4L2_PIX_FMT_YUV32:
1585 case V4L2_PIX_FMT_NV12MT_16X16:
1586 case V4L2_PIX_FMT_NV42:
1587 case V4L2_PIX_FMT_H264_MVC:
1589 GST_DEBUG ("Unsupported fourcc 0x%08x %" GST_FOURCC_FORMAT,
1590 fourcc, GST_FOURCC_ARGS (fourcc));
1598 gst_v4l2_object_v4l2fourcc_to_structure (guint32 fourcc)
1600 GstStructure *template;
1603 template = gst_v4l2_object_v4l2fourcc_to_bare_struct (fourcc);
1605 if (template == NULL)
1608 for (i = 0; i < GST_V4L2_FORMAT_COUNT; i++) {
1609 if (gst_v4l2_formats[i].format != fourcc)
1612 if (gst_v4l2_formats[i].dimensions) {
1613 gst_structure_set (template,
1614 "width", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
1615 "height", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
1616 "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
1625 /* Add an 'alternate' variant of the caps with the feature */
1627 add_alternate_variant (GstV4l2Object * v4l2object, GstCaps * caps,
1628 GstStructure * structure)
1630 GstStructure *alt_s;
1632 if (v4l2object && v4l2object->never_interlaced)
1635 if (!gst_structure_has_name (structure, "video/x-raw"))
1638 alt_s = gst_structure_copy (structure);
1639 gst_structure_set (alt_s, "interlace-mode", G_TYPE_STRING, "alternate", NULL);
1641 gst_caps_append_structure_full (caps, alt_s,
1642 gst_caps_features_new (GST_CAPS_FEATURE_FORMAT_INTERLACED, NULL));
1646 gst_v4l2_object_get_caps_helper (GstV4L2FormatFlags flags)
1648 GstStructure *structure;
1649 GstCaps *caps, *caps_interlaced;
1652 caps = gst_caps_new_empty ();
1653 caps_interlaced = gst_caps_new_empty ();
1654 for (i = 0; i < GST_V4L2_FORMAT_COUNT; i++) {
1656 if ((gst_v4l2_formats[i].flags & flags) == 0)
1660 gst_v4l2_object_v4l2fourcc_to_bare_struct (gst_v4l2_formats[i].format);
1663 GstStructure *alt_s = NULL;
1665 if (gst_v4l2_formats[i].dimensions) {
1666 gst_structure_set (structure,
1667 "width", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
1668 "height", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
1669 "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
1672 switch (gst_v4l2_formats[i].format) {
1673 case V4L2_PIX_FMT_RGB32:
1674 alt_s = gst_structure_copy (structure);
1675 gst_structure_set (alt_s, "format", G_TYPE_STRING, "ARGB", NULL);
1677 case V4L2_PIX_FMT_BGR32:
1678 alt_s = gst_structure_copy (structure);
1679 gst_structure_set (alt_s, "format", G_TYPE_STRING, "BGRA", NULL);
1684 gst_caps_append_structure (caps, structure);
1687 gst_caps_append_structure (caps, alt_s);
1688 add_alternate_variant (NULL, caps_interlaced, alt_s);
1691 add_alternate_variant (NULL, caps_interlaced, structure);
1695 caps = gst_caps_simplify (caps);
1696 caps_interlaced = gst_caps_simplify (caps_interlaced);
1698 return gst_caps_merge (caps, caps_interlaced);
1702 gst_v4l2_object_get_all_caps (void)
1704 static GstCaps *caps = NULL;
1706 if (g_once_init_enter (&caps)) {
1707 GstCaps *all_caps = gst_v4l2_object_get_caps_helper (GST_V4L2_ALL);
1708 GST_MINI_OBJECT_FLAG_SET (all_caps, GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
1709 g_once_init_leave (&caps, all_caps);
1716 gst_v4l2_object_get_raw_caps (void)
1718 static GstCaps *caps = NULL;
1720 if (g_once_init_enter (&caps)) {
1721 GstCaps *raw_caps = gst_v4l2_object_get_caps_helper (GST_V4L2_RAW);
1722 GST_MINI_OBJECT_FLAG_SET (raw_caps, GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
1723 g_once_init_leave (&caps, raw_caps);
1730 gst_v4l2_object_get_codec_caps (void)
1732 static GstCaps *caps = NULL;
1734 if (g_once_init_enter (&caps)) {
1735 GstCaps *codec_caps = gst_v4l2_object_get_caps_helper (GST_V4L2_CODEC);
1736 GST_MINI_OBJECT_FLAG_SET (codec_caps, GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
1737 g_once_init_leave (&caps, codec_caps);
1743 /* collect data for the given caps
1744 * @caps: given input caps
1745 * @format: location for the v4l format
1746 * @w/@h: location for width and height
1747 * @fps_n/@fps_d: location for framerate
1748 * @size: location for expected size of the frame or 0 if unknown
1751 gst_v4l2_object_get_caps_info (GstV4l2Object * v4l2object, GstCaps * caps,
1752 struct v4l2_fmtdesc **format, GstVideoInfo * info)
1754 GstStructure *structure;
1755 guint32 fourcc = 0, fourcc_nc = 0;
1756 const gchar *mimetype;
1757 struct v4l2_fmtdesc *fmt = NULL;
1759 structure = gst_caps_get_structure (caps, 0);
1761 mimetype = gst_structure_get_name (structure);
1763 if (!gst_video_info_from_caps (info, caps))
1764 goto invalid_format;
1766 if (g_str_equal (mimetype, "video/x-raw")) {
1767 switch (GST_VIDEO_INFO_FORMAT (info)) {
1768 case GST_VIDEO_FORMAT_I420:
1769 fourcc = V4L2_PIX_FMT_YUV420;
1770 fourcc_nc = V4L2_PIX_FMT_YUV420M;
1772 case GST_VIDEO_FORMAT_YUY2:
1773 fourcc = V4L2_PIX_FMT_YUYV;
1775 case GST_VIDEO_FORMAT_UYVY:
1776 fourcc = V4L2_PIX_FMT_UYVY;
1778 case GST_VIDEO_FORMAT_YV12:
1779 fourcc = V4L2_PIX_FMT_YVU420;
1781 case GST_VIDEO_FORMAT_Y41B:
1782 fourcc = V4L2_PIX_FMT_YUV411P;
1784 case GST_VIDEO_FORMAT_Y42B:
1785 fourcc = V4L2_PIX_FMT_YUV422P;
1787 case GST_VIDEO_FORMAT_NV12:
1788 fourcc = V4L2_PIX_FMT_NV12;
1789 fourcc_nc = V4L2_PIX_FMT_NV12M;
1791 case GST_VIDEO_FORMAT_NV12_64Z32:
1792 fourcc_nc = V4L2_PIX_FMT_NV12MT;
1794 case GST_VIDEO_FORMAT_NV21:
1795 fourcc = V4L2_PIX_FMT_NV21;
1796 fourcc_nc = V4L2_PIX_FMT_NV21M;
1798 case GST_VIDEO_FORMAT_NV16:
1799 fourcc = V4L2_PIX_FMT_NV16;
1800 fourcc_nc = V4L2_PIX_FMT_NV16M;
1802 case GST_VIDEO_FORMAT_NV61:
1803 fourcc = V4L2_PIX_FMT_NV61;
1804 fourcc_nc = V4L2_PIX_FMT_NV61M;
1806 case GST_VIDEO_FORMAT_NV24:
1807 fourcc = V4L2_PIX_FMT_NV24;
1809 case GST_VIDEO_FORMAT_YVYU:
1810 fourcc = V4L2_PIX_FMT_YVYU;
1812 case GST_VIDEO_FORMAT_RGB15:
1813 fourcc = V4L2_PIX_FMT_RGB555;
1814 fourcc_nc = V4L2_PIX_FMT_XRGB555;
1816 case GST_VIDEO_FORMAT_RGB16:
1817 fourcc = V4L2_PIX_FMT_RGB565;
1819 case GST_VIDEO_FORMAT_RGB:
1820 fourcc = V4L2_PIX_FMT_RGB24;
1822 case GST_VIDEO_FORMAT_BGR:
1823 fourcc = V4L2_PIX_FMT_BGR24;
1825 case GST_VIDEO_FORMAT_xRGB:
1826 fourcc = V4L2_PIX_FMT_RGB32;
1827 fourcc_nc = V4L2_PIX_FMT_XRGB32;
1829 case GST_VIDEO_FORMAT_RGBx:
1830 fourcc = V4L2_PIX_FMT_RGBX32;
1832 case GST_VIDEO_FORMAT_ARGB:
1833 fourcc = V4L2_PIX_FMT_RGB32;
1834 fourcc_nc = V4L2_PIX_FMT_ARGB32;
1836 case GST_VIDEO_FORMAT_RGBA:
1837 fourcc = V4L2_PIX_FMT_RGBA32;
1839 case GST_VIDEO_FORMAT_BGRx:
1840 fourcc = V4L2_PIX_FMT_BGR32;
1841 fourcc_nc = V4L2_PIX_FMT_XBGR32;
1843 case GST_VIDEO_FORMAT_xBGR:
1844 fourcc = V4L2_PIX_FMT_BGRX32;
1846 case GST_VIDEO_FORMAT_BGRA:
1847 fourcc = V4L2_PIX_FMT_BGR32;
1848 fourcc_nc = V4L2_PIX_FMT_ABGR32;
1850 case GST_VIDEO_FORMAT_ABGR:
1851 fourcc = V4L2_PIX_FMT_BGRA32;
1853 case GST_VIDEO_FORMAT_GRAY8:
1854 fourcc = V4L2_PIX_FMT_GREY;
1856 case GST_VIDEO_FORMAT_GRAY16_LE:
1857 fourcc = V4L2_PIX_FMT_Y16;
1859 case GST_VIDEO_FORMAT_GRAY16_BE:
1860 fourcc = V4L2_PIX_FMT_Y16_BE;
1862 case GST_VIDEO_FORMAT_BGR15:
1863 fourcc = V4L2_PIX_FMT_RGB555X;
1864 fourcc_nc = V4L2_PIX_FMT_XRGB555X;
1870 if (g_str_equal (mimetype, "video/mpegts")) {
1871 fourcc = V4L2_PIX_FMT_MPEG;
1872 } else if (g_str_equal (mimetype, "video/x-dv")) {
1873 fourcc = V4L2_PIX_FMT_DV;
1874 } else if (g_str_equal (mimetype, "image/jpeg")) {
1875 fourcc = V4L2_PIX_FMT_JPEG;
1876 } else if (g_str_equal (mimetype, "video/mpeg")) {
1878 if (gst_structure_get_int (structure, "mpegversion", &version)) {
1881 fourcc = V4L2_PIX_FMT_MPEG1;
1884 fourcc = V4L2_PIX_FMT_MPEG2;
1887 fourcc = V4L2_PIX_FMT_MPEG4;
1888 fourcc_nc = V4L2_PIX_FMT_XVID;
1894 } else if (g_str_equal (mimetype, "video/x-fwht")) {
1895 fourcc = V4L2_PIX_FMT_FWHT;
1896 } else if (g_str_equal (mimetype, "video/x-h263")) {
1897 fourcc = V4L2_PIX_FMT_H263;
1898 } else if (g_str_equal (mimetype, "video/x-h264")) {
1899 const gchar *stream_format =
1900 gst_structure_get_string (structure, "stream-format");
1901 if (g_str_equal (stream_format, "avc"))
1902 fourcc = V4L2_PIX_FMT_H264_NO_SC;
1904 fourcc = V4L2_PIX_FMT_H264;
1905 } else if (g_str_equal (mimetype, "video/x-h265")) {
1906 fourcc = V4L2_PIX_FMT_HEVC;
1907 } else if (g_str_equal (mimetype, "video/x-vp8")) {
1908 fourcc = V4L2_PIX_FMT_VP8;
1909 } else if (g_str_equal (mimetype, "video/x-vp9")) {
1910 fourcc = V4L2_PIX_FMT_VP9;
1911 } else if (g_str_equal (mimetype, "video/x-bayer")) {
1912 const gchar *format = gst_structure_get_string (structure, "format");
1914 if (!g_ascii_strcasecmp (format, "bggr"))
1915 fourcc = V4L2_PIX_FMT_SBGGR8;
1916 else if (!g_ascii_strcasecmp (format, "gbrg"))
1917 fourcc = V4L2_PIX_FMT_SGBRG8;
1918 else if (!g_ascii_strcasecmp (format, "grbg"))
1919 fourcc = V4L2_PIX_FMT_SGRBG8;
1920 else if (!g_ascii_strcasecmp (format, "rggb"))
1921 fourcc = V4L2_PIX_FMT_SRGGB8;
1923 } else if (g_str_equal (mimetype, "video/x-sonix")) {
1924 fourcc = V4L2_PIX_FMT_SN9C10X;
1925 } else if (g_str_equal (mimetype, "video/x-pwc1")) {
1926 fourcc = V4L2_PIX_FMT_PWC1;
1927 } else if (g_str_equal (mimetype, "video/x-pwc2")) {
1928 fourcc = V4L2_PIX_FMT_PWC2;
1933 /* Prefer the non-contiguous if supported */
1934 v4l2object->prefered_non_contiguous = TRUE;
1937 fmt = gst_v4l2_object_get_format_from_fourcc (v4l2object, fourcc_nc);
1938 else if (fourcc == 0)
1939 goto unhandled_format;
1942 fmt = gst_v4l2_object_get_format_from_fourcc (v4l2object, fourcc);
1943 v4l2object->prefered_non_contiguous = FALSE;
1947 goto unsupported_format;
1956 GST_DEBUG_OBJECT (v4l2object, "invalid format");
1961 GST_DEBUG_OBJECT (v4l2object, "unhandled format");
1966 GST_DEBUG_OBJECT (v4l2object, "unsupported format");
1972 gst_v4l2_object_get_nearest_size (GstV4l2Object * v4l2object,
1973 guint32 pixelformat, gint * width, gint * height);
1976 gst_v4l2_object_add_aspect_ratio (GstV4l2Object * v4l2object, GstStructure * s)
1978 if (v4l2object->keep_aspect && v4l2object->par)
1979 gst_structure_set_value (s, "pixel-aspect-ratio", v4l2object->par);
1982 /* returns TRUE if the value was changed in place, otherwise FALSE */
1984 gst_v4l2src_value_simplify (GValue * val)
1986 /* simplify list of one value to one value */
1987 if (GST_VALUE_HOLDS_LIST (val) && gst_value_list_get_size (val) == 1) {
1988 const GValue *list_val;
1989 GValue new_val = G_VALUE_INIT;
1991 list_val = gst_value_list_get_value (val, 0);
1992 g_value_init (&new_val, G_VALUE_TYPE (list_val));
1993 g_value_copy (list_val, &new_val);
1994 g_value_unset (val);
2003 gst_v4l2_object_get_interlace_mode (enum v4l2_field field,
2004 GstVideoInterlaceMode * interlace_mode)
2007 case V4L2_FIELD_ANY:
2009 ("Driver bug detected - check driver with v4l2-compliance from http://git.linuxtv.org/v4l-utils.git\n");
2011 case V4L2_FIELD_NONE:
2012 *interlace_mode = GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
2014 case V4L2_FIELD_INTERLACED:
2015 case V4L2_FIELD_INTERLACED_TB:
2016 case V4L2_FIELD_INTERLACED_BT:
2017 *interlace_mode = GST_VIDEO_INTERLACE_MODE_INTERLEAVED;
2019 case V4L2_FIELD_ALTERNATE:
2020 *interlace_mode = GST_VIDEO_INTERLACE_MODE_ALTERNATE;
2023 GST_ERROR ("Unknown enum v4l2_field %d", field);
2029 gst_v4l2_object_get_colorspace (GstV4l2Object * v4l2object,
2030 struct v4l2_format *fmt, GstVideoColorimetry * cinfo)
2033 gst_v4l2_object_v4l2fourcc_is_rgb (fmt->fmt.pix.pixelformat);
2034 enum v4l2_colorspace colorspace;
2035 enum v4l2_quantization range;
2036 enum v4l2_ycbcr_encoding matrix;
2037 enum v4l2_xfer_func transfer;
2038 gboolean ret = TRUE;
2040 if (V4L2_TYPE_IS_MULTIPLANAR (fmt->type)) {
2041 colorspace = fmt->fmt.pix_mp.colorspace;
2042 range = fmt->fmt.pix_mp.quantization;
2043 matrix = fmt->fmt.pix_mp.ycbcr_enc;
2044 transfer = fmt->fmt.pix_mp.xfer_func;
2046 colorspace = fmt->fmt.pix.colorspace;
2047 range = fmt->fmt.pix.quantization;
2048 matrix = fmt->fmt.pix.ycbcr_enc;
2049 transfer = fmt->fmt.pix.xfer_func;
2052 /* First step, set the defaults for each primaries */
2053 switch (colorspace) {
2054 case V4L2_COLORSPACE_SMPTE170M:
2055 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2056 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
2057 cinfo->transfer = GST_VIDEO_TRANSFER_BT601;
2058 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_SMPTE170M;
2060 case V4L2_COLORSPACE_REC709:
2061 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2062 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT709;
2063 cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
2064 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT709;
2066 case V4L2_COLORSPACE_SRGB:
2067 case V4L2_COLORSPACE_JPEG:
2068 cinfo->range = GST_VIDEO_COLOR_RANGE_0_255;
2069 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
2070 cinfo->transfer = GST_VIDEO_TRANSFER_SRGB;
2071 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT709;
2073 case V4L2_COLORSPACE_OPRGB:
2074 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2075 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
2076 cinfo->transfer = GST_VIDEO_TRANSFER_ADOBERGB;
2077 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_ADOBERGB;
2079 case V4L2_COLORSPACE_BT2020:
2080 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2081 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT2020;
2082 cinfo->transfer = GST_VIDEO_TRANSFER_BT2020_12;
2083 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT2020;
2085 case V4L2_COLORSPACE_SMPTE240M:
2086 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2087 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_SMPTE240M;
2088 cinfo->transfer = GST_VIDEO_TRANSFER_SMPTE240M;
2089 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_SMPTE240M;
2091 case V4L2_COLORSPACE_470_SYSTEM_M:
2092 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2093 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
2094 cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
2095 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT470M;
2097 case V4L2_COLORSPACE_470_SYSTEM_BG:
2098 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2099 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
2100 cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
2101 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT470BG;
2103 case V4L2_COLORSPACE_RAW:
2104 /* Explicitly unknown */
2105 cinfo->range = GST_VIDEO_COLOR_RANGE_UNKNOWN;
2106 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_UNKNOWN;
2107 cinfo->transfer = GST_VIDEO_TRANSFER_UNKNOWN;
2108 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_UNKNOWN;
2111 GST_DEBUG ("Unknown enum v4l2_colorspace %d", colorspace);
2119 /* Second step, apply any custom variation */
2121 case V4L2_QUANTIZATION_FULL_RANGE:
2122 cinfo->range = GST_VIDEO_COLOR_RANGE_0_255;
2124 case V4L2_QUANTIZATION_LIM_RANGE:
2125 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2127 case V4L2_QUANTIZATION_DEFAULT:
2128 /* replicated V4L2_MAP_QUANTIZATION_DEFAULT macro behavior */
2129 if (is_rgb && colorspace == V4L2_COLORSPACE_BT2020)
2130 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2131 else if (is_rgb || matrix == V4L2_YCBCR_ENC_XV601
2132 || matrix == V4L2_YCBCR_ENC_XV709
2133 || colorspace == V4L2_COLORSPACE_JPEG)
2134 cinfo->range = GST_VIDEO_COLOR_RANGE_0_255;
2136 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2139 GST_WARNING ("Unknown enum v4l2_quantization value %d", range);
2140 cinfo->range = GST_VIDEO_COLOR_RANGE_UNKNOWN;
2145 case V4L2_YCBCR_ENC_XV601:
2146 case V4L2_YCBCR_ENC_SYCC:
2147 GST_FIXME ("XV601 and SYCC not defined, assuming 601");
2149 case V4L2_YCBCR_ENC_601:
2150 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
2152 case V4L2_YCBCR_ENC_XV709:
2153 GST_FIXME ("XV709 not defined, assuming 709");
2155 case V4L2_YCBCR_ENC_709:
2156 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT709;
2158 case V4L2_YCBCR_ENC_BT2020_CONST_LUM:
2159 GST_FIXME ("BT2020 with constant luma is not defined, assuming BT2020");
2161 case V4L2_YCBCR_ENC_BT2020:
2162 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT2020;
2164 case V4L2_YCBCR_ENC_SMPTE240M:
2165 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_SMPTE240M;
2167 case V4L2_YCBCR_ENC_DEFAULT:
2168 /* nothing, just use defaults for colorspace */
2171 GST_WARNING ("Unknown enum v4l2_ycbcr_encoding value %d", matrix);
2172 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_UNKNOWN;
2176 /* Set identity matrix for R'G'B' formats to avoid creating
2177 * confusion. This though is cosmetic as it's now properly ignored by
2178 * the video info API and videoconvert. */
2180 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_RGB;
2183 case V4L2_XFER_FUNC_709:
2184 if (colorspace == V4L2_COLORSPACE_BT2020 && fmt->fmt.pix.height >= 2160)
2185 cinfo->transfer = GST_VIDEO_TRANSFER_BT2020_12;
2186 else if (colorspace == V4L2_COLORSPACE_SMPTE170M)
2187 cinfo->transfer = GST_VIDEO_TRANSFER_BT601;
2189 cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
2191 if (v4l2object->transfer)
2192 cinfo->transfer = v4l2object->transfer;
2194 case V4L2_XFER_FUNC_SRGB:
2195 cinfo->transfer = GST_VIDEO_TRANSFER_SRGB;
2197 case V4L2_XFER_FUNC_OPRGB:
2198 cinfo->transfer = GST_VIDEO_TRANSFER_ADOBERGB;
2200 case V4L2_XFER_FUNC_SMPTE240M:
2201 cinfo->transfer = GST_VIDEO_TRANSFER_SMPTE240M;
2203 case V4L2_XFER_FUNC_NONE:
2204 cinfo->transfer = GST_VIDEO_TRANSFER_GAMMA10;
2206 case V4L2_XFER_FUNC_SMPTE2084:
2207 cinfo->transfer = GST_VIDEO_TRANSFER_SMPTE2084;
2209 case V4L2_XFER_FUNC_DEFAULT:
2210 /* nothing, just use defaults for colorspace */
2213 GST_WARNING ("Unknown enum v4l2_xfer_func value %d", transfer);
2214 cinfo->transfer = GST_VIDEO_TRANSFER_UNKNOWN;
2223 gst_v4l2_object_get_streamparm (GstV4l2Object * v4l2object, GstVideoInfo * info)
2225 struct v4l2_streamparm streamparm;
2226 memset (&streamparm, 0x00, sizeof (struct v4l2_streamparm));
2227 streamparm.type = v4l2object->type;
2228 if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_G_PARM, &streamparm) < 0) {
2229 GST_WARNING_OBJECT (v4l2object->dbg_obj, "VIDIOC_G_PARM failed");
2232 if ((streamparm.parm.capture.timeperframe.numerator != 0)
2233 && (v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE
2234 || v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) {
2235 GST_VIDEO_INFO_FPS_N (info) =
2236 streamparm.parm.capture.timeperframe.denominator;
2237 GST_VIDEO_INFO_FPS_D (info) =
2238 streamparm.parm.capture.timeperframe.numerator;
2244 gst_v4l2_object_try_fmt (GstV4l2Object * v4l2object,
2245 struct v4l2_format *try_fmt)
2247 int fd = v4l2object->video_fd;
2248 struct v4l2_format fmt;
2251 memcpy (&fmt, try_fmt, sizeof (fmt));
2252 r = v4l2object->ioctl (fd, VIDIOC_TRY_FMT, &fmt);
2254 if (r < 0 && errno == ENOTTY) {
2255 /* The driver might not implement TRY_FMT, in which case we will try
2257 if (GST_V4L2_IS_ACTIVE (v4l2object))
2260 memcpy (&fmt, try_fmt, sizeof (fmt));
2261 r = v4l2object->ioctl (fd, VIDIOC_S_FMT, &fmt);
2263 memcpy (try_fmt, &fmt, sizeof (fmt));
2268 memcpy (try_fmt, &fmt, sizeof (fmt));
2269 GST_WARNING_OBJECT (v4l2object->dbg_obj,
2270 "Unable to try format: %s", g_strerror (errno));
2276 gst_v4l2_object_add_interlace_mode (GstV4l2Object * v4l2object,
2277 GstStructure * s, guint32 width, guint32 height, guint32 pixelformat)
2279 struct v4l2_format fmt;
2280 GValue interlace_formats = { 0, };
2281 enum v4l2_field formats[] = { V4L2_FIELD_NONE,
2282 V4L2_FIELD_INTERLACED, V4L2_FIELD_ALTERNATE
2285 GstVideoInterlaceMode interlace_mode, prev = -1;
2287 if (!g_str_equal (gst_structure_get_name (s), "video/x-raw"))
2290 if (v4l2object->never_interlaced) {
2291 gst_structure_set (s, "interlace-mode", G_TYPE_STRING, "progressive", NULL);
2295 g_value_init (&interlace_formats, GST_TYPE_LIST);
2297 /* Try thrice - once for NONE, once for INTERLACED and once for ALTERNATE. */
2298 for (i = 0; i < G_N_ELEMENTS (formats); i++) {
2299 memset (&fmt, 0, sizeof (fmt));
2300 fmt.type = v4l2object->type;
2301 fmt.fmt.pix.width = width;
2302 fmt.fmt.pix.height = height;
2303 fmt.fmt.pix.pixelformat = pixelformat;
2304 fmt.fmt.pix.field = formats[i];
2306 if (fmt.fmt.pix.field == V4L2_FIELD_ALTERNATE)
2307 fmt.fmt.pix.height /= 2;
2309 /* if skip_try_fmt_probes is set it's up to the caller to filter out the
2310 * formats from the formats requested by peer.
2311 * For this negotiation to work with 'alternate' we need the caps to contain
2312 * the feature so we have an intersection with downstream caps.
2314 if (!v4l2object->skip_try_fmt_probes
2315 && gst_v4l2_object_try_fmt (v4l2object, &fmt) != 0)
2318 if (gst_v4l2_object_get_interlace_mode (fmt.fmt.pix.field, &interlace_mode)
2319 && prev != interlace_mode) {
2320 GValue interlace_enum = { 0, };
2321 const gchar *mode_string;
2322 g_value_init (&interlace_enum, G_TYPE_STRING);
2323 mode_string = gst_video_interlace_mode_to_string (interlace_mode);
2324 g_value_set_string (&interlace_enum, mode_string);
2325 gst_value_list_append_and_take_value (&interlace_formats,
2327 prev = interlace_mode;
2331 if (gst_v4l2src_value_simplify (&interlace_formats)
2332 || gst_value_list_get_size (&interlace_formats) > 0)
2333 gst_structure_take_value (s, "interlace-mode", &interlace_formats);
2335 GST_WARNING_OBJECT (v4l2object, "Failed to determine interlace mode");
2341 gst_v4l2_object_fill_colorimetry_list (GValue * list,
2342 GstVideoColorimetry * cinfo)
2344 GValue colorimetry = G_VALUE_INIT;
2347 gboolean found = FALSE;
2349 g_value_init (&colorimetry, G_TYPE_STRING);
2350 g_value_take_string (&colorimetry, gst_video_colorimetry_to_string (cinfo));
2352 /* only insert if no duplicate */
2353 size = gst_value_list_get_size (list);
2354 for (i = 0; i < size; i++) {
2357 tmp = gst_value_list_get_value (list, i);
2358 if (gst_value_compare (&colorimetry, tmp) == GST_VALUE_EQUAL) {
2365 gst_value_list_append_and_take_value (list, &colorimetry);
2367 g_value_unset (&colorimetry);
2371 gst_v4l2_object_add_colorspace (GstV4l2Object * v4l2object, GstStructure * s,
2372 guint32 width, guint32 height, guint32 pixelformat)
2374 struct v4l2_format fmt;
2375 GValue list = G_VALUE_INIT;
2376 GstVideoColorimetry cinfo;
2377 enum v4l2_colorspace req_cspace;
2379 memset (&fmt, 0, sizeof (fmt));
2380 fmt.type = v4l2object->type;
2381 fmt.fmt.pix.width = width;
2382 fmt.fmt.pix.height = height;
2383 fmt.fmt.pix.pixelformat = pixelformat;
2385 g_value_init (&list, GST_TYPE_LIST);
2387 /* step 1: get device default colorspace and insert it first as
2388 * it should be the preferred one */
2389 if (gst_v4l2_object_try_fmt (v4l2object, &fmt) == 0) {
2390 if (gst_v4l2_object_get_colorspace (v4l2object, &fmt, &cinfo))
2391 gst_v4l2_object_fill_colorimetry_list (&list, &cinfo);
2394 /* step 2: probe all colorspace other than default
2395 * We don't probe all colorspace, range, matrix and transfer combination to
2396 * avoid ioctl flooding which could greatly increase initialization time
2397 * with low-speed devices (UVC...) */
2398 for (req_cspace = V4L2_COLORSPACE_SMPTE170M;
2399 req_cspace <= V4L2_COLORSPACE_RAW; req_cspace++) {
2400 /* V4L2_COLORSPACE_BT878 is deprecated and shall not be used, so skip */
2401 if (req_cspace == V4L2_COLORSPACE_BT878)
2404 if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type))
2405 fmt.fmt.pix_mp.colorspace = req_cspace;
2407 fmt.fmt.pix.colorspace = req_cspace;
2409 if (gst_v4l2_object_try_fmt (v4l2object, &fmt) == 0) {
2410 enum v4l2_colorspace colorspace;
2412 if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type))
2413 colorspace = fmt.fmt.pix_mp.colorspace;
2415 colorspace = fmt.fmt.pix.colorspace;
2417 if (colorspace == req_cspace) {
2418 if (gst_v4l2_object_get_colorspace (v4l2object, &fmt, &cinfo))
2419 gst_v4l2_object_fill_colorimetry_list (&list, &cinfo);
2424 if (gst_value_list_get_size (&list) > 0)
2425 gst_structure_take_value (s, "colorimetry", &list);
2427 g_value_unset (&list);
2432 /* The frame interval enumeration code first appeared in Linux 2.6.19. */
2433 static GstStructure *
2434 gst_v4l2_object_probe_caps_for_format_and_size (GstV4l2Object * v4l2object,
2435 guint32 pixelformat,
2436 guint32 width, guint32 height, const GstStructure * template)
2438 gint fd = v4l2object->video_fd;
2439 struct v4l2_frmivalenum ival;
2442 GValue rates = { 0, };
2444 memset (&ival, 0, sizeof (struct v4l2_frmivalenum));
2446 ival.pixel_format = pixelformat;
2448 ival.height = height;
2450 GST_LOG_OBJECT (v4l2object->dbg_obj,
2451 "get frame interval for %ux%u, %" GST_FOURCC_FORMAT, width, height,
2452 GST_FOURCC_ARGS (pixelformat));
2454 /* keep in mind that v4l2 gives us frame intervals (durations); we invert the
2455 * fraction to get framerate */
2456 if (v4l2object->ioctl (fd, VIDIOC_ENUM_FRAMEINTERVALS, &ival) < 0)
2457 goto enum_frameintervals_failed;
2459 if (ival.type == V4L2_FRMIVAL_TYPE_DISCRETE) {
2460 GValue rate = { 0, };
2462 g_value_init (&rates, GST_TYPE_LIST);
2463 g_value_init (&rate, GST_TYPE_FRACTION);
2466 num = ival.discrete.numerator;
2467 denom = ival.discrete.denominator;
2469 if (num > G_MAXINT || denom > G_MAXINT) {
2470 /* let us hope we don't get here... */
2475 GST_LOG_OBJECT (v4l2object->dbg_obj, "adding discrete framerate: %d/%d",
2478 /* swap to get the framerate */
2479 gst_value_set_fraction (&rate, denom, num);
2480 gst_value_list_append_value (&rates, &rate);
2483 } while (v4l2object->ioctl (fd, VIDIOC_ENUM_FRAMEINTERVALS, &ival) >= 0);
2484 } else if (ival.type == V4L2_FRMIVAL_TYPE_STEPWISE) {
2485 GValue min = { 0, };
2486 GValue step = { 0, };
2487 GValue max = { 0, };
2488 gboolean added = FALSE;
2489 guint32 minnum, mindenom;
2490 guint32 maxnum, maxdenom;
2492 g_value_init (&rates, GST_TYPE_LIST);
2494 g_value_init (&min, GST_TYPE_FRACTION);
2495 g_value_init (&step, GST_TYPE_FRACTION);
2496 g_value_init (&max, GST_TYPE_FRACTION);
2499 minnum = ival.stepwise.min.numerator;
2500 mindenom = ival.stepwise.min.denominator;
2501 if (minnum > G_MAXINT || mindenom > G_MAXINT) {
2505 GST_LOG_OBJECT (v4l2object->dbg_obj, "stepwise min frame interval: %d/%d",
2507 gst_value_set_fraction (&min, minnum, mindenom);
2510 maxnum = ival.stepwise.max.numerator;
2511 maxdenom = ival.stepwise.max.denominator;
2512 if (maxnum > G_MAXINT || maxdenom > G_MAXINT) {
2517 GST_LOG_OBJECT (v4l2object->dbg_obj, "stepwise max frame interval: %d/%d",
2519 gst_value_set_fraction (&max, maxnum, maxdenom);
2522 num = ival.stepwise.step.numerator;
2523 denom = ival.stepwise.step.denominator;
2524 if (num > G_MAXINT || denom > G_MAXINT) {
2529 if (num == 0 || denom == 0) {
2530 /* in this case we have a wrong fraction or no step, set the step to max
2531 * so that we only add the min value in the loop below */
2536 /* since we only have gst_value_fraction_subtract and not add, negate the
2538 GST_LOG_OBJECT (v4l2object->dbg_obj, "stepwise step frame interval: %d/%d",
2540 gst_value_set_fraction (&step, -num, denom);
2542 while (gst_value_compare (&min, &max) != GST_VALUE_GREATER_THAN) {
2543 GValue rate = { 0, };
2545 num = gst_value_get_fraction_numerator (&min);
2546 denom = gst_value_get_fraction_denominator (&min);
2547 GST_LOG_OBJECT (v4l2object->dbg_obj, "adding stepwise framerate: %d/%d",
2550 /* invert to get the framerate */
2551 g_value_init (&rate, GST_TYPE_FRACTION);
2552 gst_value_set_fraction (&rate, denom, num);
2553 gst_value_list_append_value (&rates, &rate);
2556 /* we're actually adding because step was negated above. This is because
2557 * there is no _add function... */
2558 if (!gst_value_fraction_subtract (&min, &min, &step)) {
2559 GST_WARNING_OBJECT (v4l2object->dbg_obj, "could not step fraction!");
2564 /* no range was added, leave the default range from the template */
2565 GST_WARNING_OBJECT (v4l2object->dbg_obj,
2566 "no range added, leaving default");
2567 g_value_unset (&rates);
2569 } else if (ival.type == V4L2_FRMIVAL_TYPE_CONTINUOUS) {
2570 guint32 maxnum, maxdenom;
2572 g_value_init (&rates, GST_TYPE_FRACTION_RANGE);
2574 num = ival.stepwise.min.numerator;
2575 denom = ival.stepwise.min.denominator;
2576 if (num > G_MAXINT || denom > G_MAXINT) {
2581 maxnum = ival.stepwise.max.numerator;
2582 maxdenom = ival.stepwise.max.denominator;
2583 if (maxnum > G_MAXINT || maxdenom > G_MAXINT) {
2588 GST_LOG_OBJECT (v4l2object->dbg_obj,
2589 "continuous frame interval %d/%d to %d/%d", maxdenom, maxnum, denom,
2592 gst_value_set_fraction_range_full (&rates, maxdenom, maxnum, denom, num);
2598 s = gst_structure_copy (template);
2599 gst_structure_set (s, "width", G_TYPE_INT, (gint) width,
2600 "height", G_TYPE_INT, (gint) height, NULL);
2602 gst_v4l2_object_add_aspect_ratio (v4l2object, s);
2604 if (!v4l2object->skip_try_fmt_probes) {
2605 gst_v4l2_object_add_interlace_mode (v4l2object, s, width, height,
2607 gst_v4l2_object_add_colorspace (v4l2object, s, width, height, pixelformat);
2610 if (G_IS_VALUE (&rates)) {
2611 gst_v4l2src_value_simplify (&rates);
2612 /* only change the framerate on the template when we have a valid probed new
2614 gst_structure_take_value (s, "framerate", &rates);
2615 } else if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
2616 v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
2617 gst_structure_set (s, "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT,
2623 enum_frameintervals_failed:
2625 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
2626 "Unable to enumerate intervals for %" GST_FOURCC_FORMAT "@%ux%u",
2627 GST_FOURCC_ARGS (pixelformat), width, height);
2632 /* I don't see how this is actually an error, we ignore the format then */
2633 GST_WARNING_OBJECT (v4l2object->dbg_obj,
2634 "Unknown frame interval type at %" GST_FOURCC_FORMAT "@%ux%u: %u",
2635 GST_FOURCC_ARGS (pixelformat), width, height, ival.type);
2641 sort_by_frame_size (GstStructure * s1, GstStructure * s2)
2645 gst_structure_get_int (s1, "width", &w1);
2646 gst_structure_get_int (s1, "height", &h1);
2647 gst_structure_get_int (s2, "width", &w2);
2648 gst_structure_get_int (s2, "height", &h2);
2650 /* I think it's safe to assume that this won't overflow for a while */
2651 return ((w2 * h2) - (w1 * h1));
2655 check_alternate_and_append_struct (GstCaps * caps, GstStructure * s)
2659 mode = gst_structure_get_value (s, "interlace-mode");
2663 if (G_VALUE_HOLDS_STRING (mode)) {
2664 /* Add the INTERLACED feature if the mode is alternate */
2665 if (!g_strcmp0 (gst_structure_get_string (s, "interlace-mode"),
2667 GstCapsFeatures *feat;
2669 feat = gst_caps_features_new (GST_CAPS_FEATURE_FORMAT_INTERLACED, NULL);
2670 gst_caps_set_features (caps, gst_caps_get_size (caps) - 1, feat);
2672 } else if (GST_VALUE_HOLDS_LIST (mode)) {
2673 /* If the mode is a list containing alternate, remove it from the list and add a
2674 * variant with interlace-mode=alternate and the INTERLACED feature. */
2675 GValue alter = G_VALUE_INIT;
2676 GValue inter = G_VALUE_INIT;
2678 g_value_init (&alter, G_TYPE_STRING);
2679 g_value_set_string (&alter, "alternate");
2681 /* Cannot use gst_value_can_intersect() as it requires args to have the
2683 if (gst_value_intersect (&inter, mode, &alter)) {
2684 GValue minus_alter = G_VALUE_INIT;
2687 gst_value_subtract (&minus_alter, mode, &alter);
2688 gst_structure_take_value (s, "interlace-mode", &minus_alter);
2690 copy = gst_structure_copy (s);
2691 gst_structure_take_value (copy, "interlace-mode", &inter);
2692 gst_caps_append_structure_full (caps, copy,
2693 gst_caps_features_new (GST_CAPS_FEATURE_FORMAT_INTERLACED, NULL));
2695 g_value_unset (&alter);
2699 gst_caps_append_structure (caps, s);
2703 gst_v4l2_object_update_and_append (GstV4l2Object * v4l2object,
2704 guint32 format, GstCaps * caps, GstStructure * s)
2706 GstStructure *alt_s = NULL;
2708 /* Encoded stream on output buffer need to be parsed */
2709 if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
2710 v4l2object->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
2713 for (; i < GST_V4L2_FORMAT_COUNT; i++) {
2714 if (format == gst_v4l2_formats[i].format &&
2715 gst_v4l2_formats[i].flags & GST_V4L2_CODEC &&
2716 !(gst_v4l2_formats[i].flags & GST_V4L2_NO_PARSE)) {
2717 gst_structure_set (s, "parsed", G_TYPE_BOOLEAN, TRUE, NULL);
2723 if (v4l2object->has_alpha_component &&
2724 (v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
2725 v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) {
2727 case V4L2_PIX_FMT_RGB32:
2728 alt_s = gst_structure_copy (s);
2729 gst_structure_set (alt_s, "format", G_TYPE_STRING, "ARGB", NULL);
2731 case V4L2_PIX_FMT_BGR32:
2732 alt_s = gst_structure_copy (s);
2733 gst_structure_set (alt_s, "format", G_TYPE_STRING, "BGRA", NULL);
2740 check_alternate_and_append_struct (caps, s);
2743 check_alternate_and_append_struct (caps, alt_s);
2748 gst_v4l2_object_probe_caps_for_format (GstV4l2Object * v4l2object,
2749 guint32 pixelformat, const GstStructure * template)
2751 GstCaps *ret = gst_caps_new_empty ();
2753 gint fd = v4l2object->video_fd;
2754 struct v4l2_frmsizeenum size;
2755 GList *results = NULL;
2758 if (pixelformat == GST_MAKE_FOURCC ('M', 'P', 'E', 'G')) {
2759 gst_caps_append_structure (ret, gst_structure_copy (template));
2763 memset (&size, 0, sizeof (struct v4l2_frmsizeenum));
2765 size.pixel_format = pixelformat;
2767 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
2768 "Enumerating frame sizes for %" GST_FOURCC_FORMAT,
2769 GST_FOURCC_ARGS (pixelformat));
2771 if (v4l2object->ioctl (fd, VIDIOC_ENUM_FRAMESIZES, &size) < 0)
2772 goto enum_framesizes_failed;
2774 if (size.type == V4L2_FRMSIZE_TYPE_DISCRETE) {
2776 GST_LOG_OBJECT (v4l2object->dbg_obj, "got discrete frame size %dx%d",
2777 size.discrete.width, size.discrete.height);
2779 w = MIN (size.discrete.width, G_MAXINT);
2780 h = MIN (size.discrete.height, G_MAXINT);
2784 gst_v4l2_object_probe_caps_for_format_and_size (v4l2object,
2785 pixelformat, w, h, template);
2788 results = g_list_prepend (results, tmp);
2792 } while (v4l2object->ioctl (fd, VIDIOC_ENUM_FRAMESIZES, &size) >= 0);
2793 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
2794 "done iterating discrete frame sizes");
2795 } else if (size.type == V4L2_FRMSIZE_TYPE_STEPWISE) {
2796 guint32 maxw, maxh, step_w, step_h;
2798 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "we have stepwise frame sizes:");
2799 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "min width: %d",
2800 size.stepwise.min_width);
2801 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "min height: %d",
2802 size.stepwise.min_height);
2803 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "max width: %d",
2804 size.stepwise.max_width);
2805 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "min height: %d",
2806 size.stepwise.max_height);
2807 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "step width: %d",
2808 size.stepwise.step_width);
2809 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "step height: %d",
2810 size.stepwise.step_height);
2812 w = MAX (size.stepwise.min_width, 1);
2813 h = MAX (size.stepwise.min_height, 1);
2814 maxw = MIN (size.stepwise.max_width, G_MAXINT);
2815 maxh = MIN (size.stepwise.max_height, G_MAXINT);
2817 step_w = MAX (size.stepwise.step_width, 1);
2818 step_h = MAX (size.stepwise.step_height, 1);
2820 /* FIXME: check for sanity and that min/max are multiples of the steps */
2822 /* we only query details for the max width/height since it's likely the
2823 * most restricted if there are any resolution-dependent restrictions */
2824 tmp = gst_v4l2_object_probe_caps_for_format_and_size (v4l2object,
2825 pixelformat, maxw, maxh, template);
2828 GValue step_range = G_VALUE_INIT;
2830 g_value_init (&step_range, GST_TYPE_INT_RANGE);
2831 gst_value_set_int_range_step (&step_range, w, maxw, step_w);
2832 gst_structure_set_value (tmp, "width", &step_range);
2834 gst_value_set_int_range_step (&step_range, h, maxh, step_h);
2835 gst_structure_take_value (tmp, "height", &step_range);
2837 /* no point using the results list here, since there's only one struct */
2838 gst_v4l2_object_update_and_append (v4l2object, pixelformat, ret, tmp);
2840 } else if (size.type == V4L2_FRMSIZE_TYPE_CONTINUOUS) {
2843 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "we have continuous frame sizes:");
2844 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "min width: %d",
2845 size.stepwise.min_width);
2846 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "min height: %d",
2847 size.stepwise.min_height);
2848 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "max width: %d",
2849 size.stepwise.max_width);
2850 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "min height: %d",
2851 size.stepwise.max_height);
2853 w = MAX (size.stepwise.min_width, 1);
2854 h = MAX (size.stepwise.min_height, 1);
2855 maxw = MIN (size.stepwise.max_width, G_MAXINT);
2856 maxh = MIN (size.stepwise.max_height, G_MAXINT);
2859 gst_v4l2_object_probe_caps_for_format_and_size (v4l2object, pixelformat,
2862 gst_structure_set (tmp, "width", GST_TYPE_INT_RANGE, (gint) w,
2863 (gint) maxw, "height", GST_TYPE_INT_RANGE, (gint) h, (gint) maxh,
2866 /* no point using the results list here, since there's only one struct */
2867 gst_v4l2_object_update_and_append (v4l2object, pixelformat, ret, tmp);
2873 /* we use an intermediary list to store and then sort the results of the
2874 * probing because we can't make any assumptions about the order in which
2875 * the driver will give us the sizes, but we want the final caps to contain
2876 * the results starting with the highest resolution and having the lowest
2877 * resolution last, since order in caps matters for things like fixation. */
2878 results = g_list_sort (results, (GCompareFunc) sort_by_frame_size);
2879 while (results != NULL) {
2880 gst_v4l2_object_update_and_append (v4l2object, pixelformat, ret,
2882 results = g_list_delete_link (results, results);
2885 if (gst_caps_is_empty (ret))
2886 goto enum_framesizes_no_results;
2891 enum_framesizes_failed:
2893 /* I don't see how this is actually an error */
2894 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
2895 "Failed to enumerate frame sizes for pixelformat %" GST_FOURCC_FORMAT
2896 " (%s)", GST_FOURCC_ARGS (pixelformat), g_strerror (errno));
2897 goto default_frame_sizes;
2899 enum_framesizes_no_results:
2901 /* it's possible that VIDIOC_ENUM_FRAMESIZES is defined but the driver in
2902 * question doesn't actually support it yet */
2903 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
2904 "No results for pixelformat %" GST_FOURCC_FORMAT
2905 " enumerating frame sizes, trying fallback",
2906 GST_FOURCC_ARGS (pixelformat));
2907 goto default_frame_sizes;
2911 GST_WARNING_OBJECT (v4l2object->dbg_obj,
2912 "Unknown frame sizeenum type for pixelformat %" GST_FOURCC_FORMAT
2913 ": %u", GST_FOURCC_ARGS (pixelformat), size.type);
2914 goto default_frame_sizes;
2917 default_frame_sizes:
2919 gint min_w, max_w, min_h, max_h, fix_num = 0, fix_denom = 0;
2921 /* This code is for Linux < 2.6.19 */
2923 max_w = max_h = GST_V4L2_MAX_SIZE;
2924 if (!gst_v4l2_object_get_nearest_size (v4l2object, pixelformat, &min_w,
2926 GST_WARNING_OBJECT (v4l2object->dbg_obj,
2927 "Could not probe minimum capture size for pixelformat %"
2928 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (pixelformat));
2930 if (!gst_v4l2_object_get_nearest_size (v4l2object, pixelformat, &max_w,
2932 GST_WARNING_OBJECT (v4l2object->dbg_obj,
2933 "Could not probe maximum capture size for pixelformat %"
2934 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (pixelformat));
2937 /* Since we can't get framerate directly, try to use the current norm */
2938 if (v4l2object->tv_norm && v4l2object->norms) {
2940 GstTunerNorm *norm = NULL;
2941 GstTunerNorm *current =
2942 gst_v4l2_tuner_get_norm_by_std_id (v4l2object, v4l2object->tv_norm);
2944 for (norms = v4l2object->norms; norms != NULL; norms = norms->next) {
2945 norm = (GstTunerNorm *) norms->data;
2946 if (!strcmp (norm->label, current->label))
2949 /* If it's possible, set framerate to that (discrete) value */
2951 fix_num = gst_value_get_fraction_numerator (&norm->framerate);
2952 fix_denom = gst_value_get_fraction_denominator (&norm->framerate);
2956 tmp = gst_structure_copy (template);
2958 gst_structure_set (tmp, "framerate", GST_TYPE_FRACTION, fix_num,
2960 } else if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
2961 v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
2962 /* if norm can't be used, copy the template framerate */
2963 gst_structure_set (tmp, "framerate", GST_TYPE_FRACTION_RANGE, 0, 1,
2968 gst_structure_set (tmp, "width", G_TYPE_INT, max_w, NULL);
2970 gst_structure_set (tmp, "width", GST_TYPE_INT_RANGE, min_w, max_w, NULL);
2973 gst_structure_set (tmp, "height", G_TYPE_INT, max_h, NULL);
2975 gst_structure_set (tmp, "height", GST_TYPE_INT_RANGE, min_h, max_h, NULL);
2977 gst_v4l2_object_add_aspect_ratio (v4l2object, tmp);
2979 /* We could consider setting interlace mode from min and max. */
2980 gst_v4l2_object_add_interlace_mode (v4l2object, tmp, max_w, max_h,
2983 if (!v4l2object->skip_try_fmt_probes) {
2984 gint probed_w, probed_h;
2985 if (v4l2object->info.width >= min_w && v4l2object->info.width <= max_w &&
2986 v4l2object->info.height >= min_h
2987 && v4l2object->info.height <= max_h) {
2988 probed_w = v4l2object->info.width;
2989 probed_h = v4l2object->info.height;
2994 /* We could consider to check colorspace for min too, in case it depends on
2995 * the size. But in this case, min and max could not be enough */
2996 gst_v4l2_object_add_colorspace (v4l2object, tmp, probed_w, probed_h,
3000 gst_v4l2_object_update_and_append (v4l2object, pixelformat, ret, tmp);
3006 gst_v4l2_object_get_nearest_size (GstV4l2Object * v4l2object,
3007 guint32 pixelformat, gint * width, gint * height)
3009 struct v4l2_format fmt;
3010 gboolean ret = FALSE;
3011 GstVideoInterlaceMode interlace_mode;
3013 g_return_val_if_fail (width != NULL, FALSE);
3014 g_return_val_if_fail (height != NULL, FALSE);
3016 GST_LOG_OBJECT (v4l2object->dbg_obj,
3017 "getting nearest size to %dx%d with format %" GST_FOURCC_FORMAT,
3018 *width, *height, GST_FOURCC_ARGS (pixelformat));
3020 memset (&fmt, 0, sizeof (struct v4l2_format));
3022 /* get size delimiters */
3023 memset (&fmt, 0, sizeof (fmt));
3024 fmt.type = v4l2object->type;
3025 fmt.fmt.pix.width = *width;
3026 fmt.fmt.pix.height = *height;
3027 fmt.fmt.pix.pixelformat = pixelformat;
3028 fmt.fmt.pix.field = V4L2_FIELD_ANY;
3030 if (gst_v4l2_object_try_fmt (v4l2object, &fmt) < 0)
3033 GST_LOG_OBJECT (v4l2object->dbg_obj,
3034 "got nearest size %dx%d", fmt.fmt.pix.width, fmt.fmt.pix.height);
3036 *width = fmt.fmt.pix.width;
3037 *height = fmt.fmt.pix.height;
3039 if (!gst_v4l2_object_get_interlace_mode (fmt.fmt.pix.field, &interlace_mode)) {
3040 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3041 "Unsupported field type for %" GST_FOURCC_FORMAT "@%ux%u: %u",
3042 GST_FOURCC_ARGS (pixelformat), *width, *height, fmt.fmt.pix.field);
3050 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3051 "Unable to try format: %s", g_strerror (errno));
3058 gst_v4l2_object_is_dmabuf_supported (GstV4l2Object * v4l2object)
3060 gboolean ret = TRUE;
3061 struct v4l2_exportbuffer expbuf = {
3062 .type = v4l2object->type,
3065 .flags = O_CLOEXEC | O_RDWR,
3068 if (v4l2object->fmtdesc->flags & V4L2_FMT_FLAG_EMULATED) {
3069 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3070 "libv4l2 converter detected, disabling DMABuf");
3074 /* Expected to fail, but ENOTTY tells us that it is not implemented. */
3075 v4l2object->ioctl (v4l2object->video_fd, VIDIOC_EXPBUF, &expbuf);
3076 if (errno == ENOTTY)
3083 gst_v4l2_object_setup_pool (GstV4l2Object * v4l2object, GstCaps * caps)
3087 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "initializing the %s system",
3088 V4L2_TYPE_IS_OUTPUT (v4l2object->type) ? "output" : "capture");
3090 GST_V4L2_CHECK_OPEN (v4l2object);
3091 GST_V4L2_CHECK_NOT_ACTIVE (v4l2object);
3093 /* find transport */
3094 mode = v4l2object->req_mode;
3096 if (v4l2object->device_caps & V4L2_CAP_READWRITE) {
3097 if (v4l2object->req_mode == GST_V4L2_IO_AUTO)
3098 mode = GST_V4L2_IO_RW;
3099 } else if (v4l2object->req_mode == GST_V4L2_IO_RW)
3100 goto method_not_supported;
3102 if (v4l2object->device_caps & V4L2_CAP_STREAMING) {
3103 if (v4l2object->req_mode == GST_V4L2_IO_AUTO) {
3104 if (!V4L2_TYPE_IS_OUTPUT (v4l2object->type) &&
3105 gst_v4l2_object_is_dmabuf_supported (v4l2object)) {
3106 mode = GST_V4L2_IO_DMABUF;
3108 mode = GST_V4L2_IO_MMAP;
3111 } else if (v4l2object->req_mode == GST_V4L2_IO_MMAP ||
3112 v4l2object->req_mode == GST_V4L2_IO_DMABUF)
3113 goto method_not_supported;
3115 /* if still no transport selected, error out */
3116 if (mode == GST_V4L2_IO_AUTO)
3117 goto no_supported_capture_method;
3119 GST_INFO_OBJECT (v4l2object->dbg_obj, "accessing buffers via mode %d", mode);
3120 v4l2object->mode = mode;
3122 /* If min_buffers is not set, the driver either does not support the control or
3123 it has not been asked yet via propose_allocation/decide_allocation. */
3124 if (!v4l2object->min_buffers)
3125 gst_v4l2_get_driver_min_buffers (v4l2object);
3127 /* Map the buffers */
3128 GST_LOG_OBJECT (v4l2object->dbg_obj, "initiating buffer pool");
3130 if (!(v4l2object->pool = gst_v4l2_buffer_pool_new (v4l2object, caps)))
3131 goto buffer_pool_new_failed;
3133 GST_V4L2_SET_ACTIVE (v4l2object);
3138 buffer_pool_new_failed:
3140 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, READ,
3141 (_("Could not map buffers from device '%s'"),
3142 v4l2object->videodev),
3143 ("Failed to create buffer pool: %s", g_strerror (errno)));
3146 method_not_supported:
3148 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, READ,
3149 (_("The driver of device '%s' does not support the IO method %d"),
3150 v4l2object->videodev, mode), (NULL));
3153 no_supported_capture_method:
3155 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, READ,
3156 (_("The driver of device '%s' does not support any known IO "
3157 "method."), v4l2object->videodev), (NULL));
3163 gst_v4l2_object_set_stride (GstVideoInfo * info, GstVideoAlignment * align,
3164 gint plane, gint stride)
3166 const GstVideoFormatInfo *finfo = info->finfo;
3168 if (GST_VIDEO_FORMAT_INFO_IS_TILED (finfo)) {
3169 gint x_tiles, y_tiles, ws, hs, tile_height, padded_height;
3172 ws = GST_VIDEO_FORMAT_INFO_TILE_WS (finfo);
3173 hs = GST_VIDEO_FORMAT_INFO_TILE_HS (finfo);
3174 tile_height = 1 << hs;
3176 padded_height = GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT (finfo, plane,
3177 info->height + align->padding_top + align->padding_bottom);
3178 padded_height = GST_ROUND_UP_N (padded_height, tile_height);
3180 x_tiles = stride >> ws;
3181 y_tiles = padded_height >> hs;
3182 info->stride[plane] = GST_VIDEO_TILE_MAKE_STRIDE (x_tiles, y_tiles);
3184 info->stride[plane] = stride;
3189 gst_v4l2_object_extrapolate_info (GstV4l2Object * v4l2object,
3190 GstVideoInfo * info, GstVideoAlignment * align, gint stride)
3192 const GstVideoFormatInfo *finfo = info->finfo;
3193 gint i, estride, padded_height;
3196 g_return_if_fail (v4l2object->n_v4l2_planes == 1);
3199 GST_VIDEO_INFO_FIELD_HEIGHT (info) + align->padding_top +
3200 align->padding_bottom;
3202 for (i = 0; i < finfo->n_planes; i++) {
3203 estride = gst_v4l2_object_extrapolate_stride (finfo, i, stride);
3205 gst_v4l2_object_set_stride (info, align, i, estride);
3207 info->offset[i] = offs;
3209 GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT (finfo, i, padded_height);
3211 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
3212 "Extrapolated for plane %d with base stride %d: "
3213 "stride %d, offset %" G_GSIZE_FORMAT, i, stride, info->stride[i],
3217 /* Update the image size according the amount of data we are going to
3218 * read/write. This workaround bugs in driver where the sizeimage provided
3219 * by TRY/S_FMT represent the buffer length (maximum size) rather then the expected
3220 * bytesused (buffer size). */
3221 if (offs < info->size)
3226 gst_v4l2_object_save_format (GstV4l2Object * v4l2object,
3227 struct v4l2_fmtdesc *fmtdesc, struct v4l2_format *format,
3228 GstVideoInfo * info, GstVideoAlignment * align)
3230 const GstVideoFormatInfo *finfo = info->finfo;
3231 gboolean standard_stride = TRUE;
3232 gint stride, pstride, padded_width, padded_height, i;
3234 if (GST_VIDEO_INFO_FORMAT (info) == GST_VIDEO_FORMAT_ENCODED) {
3235 v4l2object->n_v4l2_planes = 1;
3236 info->size = format->fmt.pix.sizeimage;
3240 /* adjust right padding */
3241 if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type))
3242 stride = format->fmt.pix_mp.plane_fmt[0].bytesperline;
3244 stride = format->fmt.pix.bytesperline;
3246 pstride = GST_VIDEO_FORMAT_INFO_PSTRIDE (finfo, 0);
3248 padded_width = stride / pstride;
3250 /* pstride can be 0 for complex formats */
3251 GST_WARNING_OBJECT (v4l2object->element,
3252 "format %s has a pstride of 0, cannot compute padded with",
3253 gst_video_format_to_string (GST_VIDEO_INFO_FORMAT (info)));
3254 padded_width = stride;
3257 if (padded_width < format->fmt.pix.width)
3258 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3259 "Driver bug detected, stride (%d) is too small for the width (%d)",
3260 padded_width, format->fmt.pix.width);
3262 align->padding_right = padded_width - info->width - align->padding_left;
3264 /* adjust bottom padding */
3265 padded_height = format->fmt.pix.height;
3267 if (GST_VIDEO_FORMAT_INFO_IS_TILED (finfo)) {
3268 guint hs, tile_height;
3270 hs = GST_VIDEO_FORMAT_INFO_TILE_HS (finfo);
3271 tile_height = 1 << hs;
3273 padded_height = GST_ROUND_UP_N (padded_height, tile_height);
3276 align->padding_bottom =
3277 padded_height - GST_VIDEO_INFO_FIELD_HEIGHT (info) - align->padding_top;
3279 /* setup the strides and offset */
3280 if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type)) {
3281 struct v4l2_pix_format_mplane *pix_mp = &format->fmt.pix_mp;
3283 /* figure out the frame layout */
3284 v4l2object->n_v4l2_planes = MAX (1, pix_mp->num_planes);
3286 for (i = 0; i < v4l2object->n_v4l2_planes; i++) {
3287 stride = pix_mp->plane_fmt[i].bytesperline;
3289 if (info->stride[i] != stride)
3290 standard_stride = FALSE;
3292 gst_v4l2_object_set_stride (info, align, i, stride);
3293 info->offset[i] = info->size;
3294 info->size += pix_mp->plane_fmt[i].sizeimage;
3297 /* Extrapolate stride if planar format are being set in 1 v4l2 plane */
3298 if (v4l2object->n_v4l2_planes < finfo->n_planes) {
3299 stride = format->fmt.pix_mp.plane_fmt[0].bytesperline;
3300 gst_v4l2_object_extrapolate_info (v4l2object, info, align, stride);
3303 /* only one plane in non-MPLANE mode */
3304 v4l2object->n_v4l2_planes = 1;
3305 info->size = format->fmt.pix.sizeimage;
3306 stride = format->fmt.pix.bytesperline;
3308 if (info->stride[0] != stride)
3309 standard_stride = FALSE;
3311 gst_v4l2_object_extrapolate_info (v4l2object, info, align, stride);
3314 /* adjust the offset to take into account left and top */
3315 if (GST_VIDEO_FORMAT_INFO_IS_TILED (finfo)) {
3316 if ((align->padding_left + align->padding_top) > 0)
3317 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3318 "Left and top padding is not permitted for tiled formats");
3320 for (i = 0; i < finfo->n_planes; i++) {
3323 /* FIXME we assume plane as component as this is true for all supported
3324 * format we support. */
3326 hedge = GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (finfo, i, align->padding_left);
3327 vedge = GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT (finfo, i, align->padding_top);
3329 info->offset[i] += (vedge * info->stride[i]) +
3330 (hedge * GST_VIDEO_INFO_COMP_PSTRIDE (info, i));
3335 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Got sizeimage %" G_GSIZE_FORMAT,
3338 /* to avoid copies we need video meta if there is padding */
3339 v4l2object->need_video_meta =
3340 ((align->padding_top + align->padding_left + align->padding_right +
3341 align->padding_bottom) != 0);
3343 /* ... or if stride is non "standard" */
3344 if (!standard_stride)
3345 v4l2object->need_video_meta = TRUE;
3347 /* ... or also video meta if we use multiple, non-contiguous, planes */
3348 if (v4l2object->n_v4l2_planes > 1)
3349 v4l2object->need_video_meta = TRUE;
3351 v4l2object->info = *info;
3352 v4l2object->align = *align;
3353 v4l2object->format = *format;
3354 v4l2object->fmtdesc = fmtdesc;
3356 /* if we have a framerate pre-calculate duration */
3357 if (info->fps_n > 0 && info->fps_d > 0) {
3358 v4l2object->duration = gst_util_uint64_scale_int (GST_SECOND, info->fps_d,
3360 if (GST_VIDEO_INFO_INTERLACE_MODE (info) ==
3361 GST_VIDEO_INTERLACE_MODE_ALTERNATE)
3362 v4l2object->duration /= 2;
3364 v4l2object->duration = GST_CLOCK_TIME_NONE;
3369 gst_v4l2_object_extrapolate_stride (const GstVideoFormatInfo * finfo,
3370 gint plane, gint stride)
3374 switch (finfo->format) {
3375 case GST_VIDEO_FORMAT_NV12:
3376 case GST_VIDEO_FORMAT_NV12_64Z32:
3377 case GST_VIDEO_FORMAT_NV21:
3378 case GST_VIDEO_FORMAT_NV16:
3379 case GST_VIDEO_FORMAT_NV61:
3380 case GST_VIDEO_FORMAT_NV24:
3381 estride = (plane == 0 ? 1 : 2) *
3382 GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (finfo, plane, stride);
3385 estride = GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (finfo, plane, stride);
3392 static enum v4l2_field
3393 get_v4l2_field_for_info (GstVideoInfo * info)
3395 if (!GST_VIDEO_INFO_IS_INTERLACED (info))
3396 return V4L2_FIELD_NONE;
3398 if (GST_VIDEO_INFO_INTERLACE_MODE (info) ==
3399 GST_VIDEO_INTERLACE_MODE_ALTERNATE)
3400 return V4L2_FIELD_ALTERNATE;
3402 switch (GST_VIDEO_INFO_FIELD_ORDER (info)) {
3403 case GST_VIDEO_FIELD_ORDER_TOP_FIELD_FIRST:
3404 return V4L2_FIELD_INTERLACED_TB;
3405 case GST_VIDEO_FIELD_ORDER_BOTTOM_FIELD_FIRST:
3406 return V4L2_FIELD_INTERLACED_BT;
3407 case GST_VIDEO_FIELD_ORDER_UNKNOWN:
3409 return V4L2_FIELD_INTERLACED;
3414 gst_v4l2_video_colorimetry_matches (const GstVideoColorimetry * cinfo,
3418 static const GstVideoColorimetry ci_likely_jpeg = {
3419 GST_VIDEO_COLOR_RANGE_0_255, GST_VIDEO_COLOR_MATRIX_BT601,
3420 GST_VIDEO_TRANSFER_UNKNOWN, GST_VIDEO_COLOR_PRIMARIES_UNKNOWN
3422 static const GstVideoColorimetry ci_jpeg = {
3423 GST_VIDEO_COLOR_RANGE_0_255, GST_VIDEO_COLOR_MATRIX_BT601,
3424 GST_VIDEO_TRANSFER_SRGB, GST_VIDEO_COLOR_PRIMARIES_BT709
3427 if (!gst_video_info_from_caps (&info, caps))
3430 /* if colorimetry in caps is unknown, use the default one */
3431 if (info.colorimetry.primaries == GST_VIDEO_COLOR_PRIMARIES_UNKNOWN)
3432 info.colorimetry.primaries = cinfo->primaries;
3433 if (info.colorimetry.range == GST_VIDEO_COLOR_RANGE_UNKNOWN)
3434 info.colorimetry.range = cinfo->range;
3435 if (info.colorimetry.matrix == GST_VIDEO_COLOR_MATRIX_UNKNOWN)
3436 info.colorimetry.matrix = cinfo->matrix;
3437 if (info.colorimetry.transfer == GST_VIDEO_TRANSFER_UNKNOWN)
3438 info.colorimetry.transfer = cinfo->transfer;
3440 if (gst_video_colorimetry_is_equal (&info.colorimetry, cinfo))
3443 /* Allow 1:4:0:0 (produced by jpegdec) if the device expects 1:4:7:1 */
3444 if (gst_video_colorimetry_is_equal (&info.colorimetry, &ci_likely_jpeg)
3445 && gst_video_colorimetry_is_equal (cinfo, &ci_jpeg))
3451 static const gchar *
3452 field_to_str (enum v4l2_field f)
3455 case V4L2_FIELD_ANY:
3457 case V4L2_FIELD_NONE:
3459 case V4L2_FIELD_TOP:
3461 case V4L2_FIELD_BOTTOM:
3463 case V4L2_FIELD_INTERLACED:
3464 return "interlaced";
3465 case V4L2_FIELD_SEQ_TB:
3467 case V4L2_FIELD_SEQ_BT:
3469 case V4L2_FIELD_ALTERNATE:
3471 case V4L2_FIELD_INTERLACED_TB:
3472 return "interlaced-tb";
3473 case V4L2_FIELD_INTERLACED_BT:
3474 return "interlaced-bt";
3481 gst_v4l2_object_set_format_full (GstV4l2Object * v4l2object, GstCaps * caps,
3482 gboolean try_only, GstV4l2Error * error)
3484 gint fd = v4l2object->video_fd;
3485 struct v4l2_format format;
3486 struct v4l2_streamparm streamparm;
3487 enum v4l2_field field;
3488 guint32 pixelformat;
3489 struct v4l2_fmtdesc *fmtdesc;
3491 GstVideoAlignment align;
3492 gint width, height, fps_n, fps_d;
3496 enum v4l2_colorspace colorspace = 0;
3497 enum v4l2_quantization range = 0;
3498 enum v4l2_ycbcr_encoding matrix = 0;
3499 enum v4l2_xfer_func transfer = 0;
3501 gboolean disable_interlacing = FALSE;
3502 gboolean disable_colorimetry = FALSE;
3504 g_return_val_if_fail (!v4l2object->skip_try_fmt_probes ||
3505 gst_caps_is_writable (caps), FALSE);
3507 GST_V4L2_CHECK_OPEN (v4l2object);
3509 GST_V4L2_CHECK_NOT_ACTIVE (v4l2object);
3511 is_mplane = V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type);
3513 gst_video_info_init (&info);
3514 gst_video_alignment_reset (&align);
3515 v4l2object->transfer = GST_VIDEO_TRANSFER_UNKNOWN;
3517 if (!gst_v4l2_object_get_caps_info (v4l2object, caps, &fmtdesc, &info))
3520 pixelformat = fmtdesc->pixelformat;
3521 width = GST_VIDEO_INFO_WIDTH (&info);
3522 height = GST_VIDEO_INFO_FIELD_HEIGHT (&info);
3523 fps_n = GST_VIDEO_INFO_FPS_N (&info);
3524 fps_d = GST_VIDEO_INFO_FPS_D (&info);
3526 /* if encoded format (GST_VIDEO_INFO_N_PLANES return 0)
3527 * or if contiguous is preferred */
3528 n_v4l_planes = GST_VIDEO_INFO_N_PLANES (&info);
3529 if (!n_v4l_planes || !v4l2object->prefered_non_contiguous)
3532 field = get_v4l2_field_for_info (&info);
3533 if (field != V4L2_FIELD_NONE)
3534 GST_DEBUG_OBJECT (v4l2object->element, "interlaced video");
3536 GST_DEBUG_OBJECT (v4l2object->element, "progressive video");
3538 /* We first pick the main colorspace from the primaries */
3539 switch (info.colorimetry.primaries) {
3540 case GST_VIDEO_COLOR_PRIMARIES_BT709:
3541 /* There is two colorspaces using these primaries, use the range to
3543 if (info.colorimetry.range == GST_VIDEO_COLOR_RANGE_16_235)
3544 colorspace = V4L2_COLORSPACE_REC709;
3546 colorspace = V4L2_COLORSPACE_SRGB;
3548 case GST_VIDEO_COLOR_PRIMARIES_BT2020:
3549 colorspace = V4L2_COLORSPACE_BT2020;
3551 case GST_VIDEO_COLOR_PRIMARIES_BT470M:
3552 colorspace = V4L2_COLORSPACE_470_SYSTEM_M;
3554 case GST_VIDEO_COLOR_PRIMARIES_BT470BG:
3555 colorspace = V4L2_COLORSPACE_470_SYSTEM_BG;
3557 case GST_VIDEO_COLOR_PRIMARIES_SMPTE170M:
3558 colorspace = V4L2_COLORSPACE_SMPTE170M;
3560 case GST_VIDEO_COLOR_PRIMARIES_SMPTE240M:
3561 colorspace = V4L2_COLORSPACE_SMPTE240M;
3564 case GST_VIDEO_COLOR_PRIMARIES_FILM:
3565 case GST_VIDEO_COLOR_PRIMARIES_UNKNOWN:
3566 /* We don't know, we will guess */
3570 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3571 "Unknown colorimetry primaries %d", info.colorimetry.primaries);
3575 switch (info.colorimetry.range) {
3576 case GST_VIDEO_COLOR_RANGE_0_255:
3577 range = V4L2_QUANTIZATION_FULL_RANGE;
3579 case GST_VIDEO_COLOR_RANGE_16_235:
3580 range = V4L2_QUANTIZATION_LIM_RANGE;
3582 case GST_VIDEO_COLOR_RANGE_UNKNOWN:
3583 /* We let the driver pick a default one */
3586 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3587 "Unknown colorimetry range %d", info.colorimetry.range);
3591 switch (info.colorimetry.matrix) {
3592 case GST_VIDEO_COLOR_MATRIX_RGB:
3593 /* Unspecified, leave to default */
3595 /* FCC is about the same as BT601 with less digit */
3596 case GST_VIDEO_COLOR_MATRIX_FCC:
3597 case GST_VIDEO_COLOR_MATRIX_BT601:
3598 matrix = V4L2_YCBCR_ENC_601;
3600 case GST_VIDEO_COLOR_MATRIX_BT709:
3601 matrix = V4L2_YCBCR_ENC_709;
3603 case GST_VIDEO_COLOR_MATRIX_SMPTE240M:
3604 matrix = V4L2_YCBCR_ENC_SMPTE240M;
3606 case GST_VIDEO_COLOR_MATRIX_BT2020:
3607 matrix = V4L2_YCBCR_ENC_BT2020;
3609 case GST_VIDEO_COLOR_MATRIX_UNKNOWN:
3610 /* We let the driver pick a default one */
3613 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3614 "Unknown colorimetry matrix %d", info.colorimetry.matrix);
3618 switch (info.colorimetry.transfer) {
3619 case GST_VIDEO_TRANSFER_GAMMA18:
3620 case GST_VIDEO_TRANSFER_GAMMA20:
3621 case GST_VIDEO_TRANSFER_GAMMA22:
3622 case GST_VIDEO_TRANSFER_GAMMA28:
3623 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3624 "GAMMA 18, 20, 22, 28 transfer functions not supported");
3626 case GST_VIDEO_TRANSFER_GAMMA10:
3627 transfer = V4L2_XFER_FUNC_NONE;
3629 case GST_VIDEO_TRANSFER_SMPTE2084:
3630 transfer = V4L2_XFER_FUNC_SMPTE2084;
3632 case GST_VIDEO_TRANSFER_BT601:
3633 case GST_VIDEO_TRANSFER_BT2020_12:
3634 case GST_VIDEO_TRANSFER_BT2020_10:
3635 case GST_VIDEO_TRANSFER_BT709:
3636 v4l2object->transfer = info.colorimetry.transfer;
3637 transfer = V4L2_XFER_FUNC_709;
3639 case GST_VIDEO_TRANSFER_SMPTE240M:
3640 transfer = V4L2_XFER_FUNC_SMPTE240M;
3642 case GST_VIDEO_TRANSFER_SRGB:
3643 transfer = V4L2_XFER_FUNC_SRGB;
3645 case GST_VIDEO_TRANSFER_LOG100:
3646 case GST_VIDEO_TRANSFER_LOG316:
3647 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3648 "LOG 100, 316 transfer functions not supported");
3649 /* FIXME No known sensible default, maybe AdobeRGB ? */
3651 case GST_VIDEO_TRANSFER_UNKNOWN:
3652 /* We let the driver pick a default one */
3655 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3656 "Unknown colorimetry transfer %d", info.colorimetry.transfer);
3660 if (colorspace == 0) {
3661 /* Try to guess colorspace according to pixelformat and size */
3662 if (GST_VIDEO_INFO_IS_YUV (&info)) {
3663 if (range == V4L2_QUANTIZATION_FULL_RANGE
3664 && matrix == V4L2_YCBCR_ENC_601 && transfer == 0) {
3665 /* Full range BT.601 YCbCr encoding with unknown primaries and transfer
3666 * function most likely is JPEG */
3667 colorspace = V4L2_COLORSPACE_JPEG;
3668 transfer = V4L2_XFER_FUNC_SRGB;
3670 /* SD streams likely use SMPTE170M and HD streams REC709 */
3671 if (width <= 720 && GST_VIDEO_INFO_HEIGHT (&info) <= 576)
3672 colorspace = V4L2_COLORSPACE_SMPTE170M;
3674 colorspace = V4L2_COLORSPACE_REC709;
3676 } else if (GST_VIDEO_INFO_IS_RGB (&info)) {
3677 colorspace = V4L2_COLORSPACE_SRGB;
3678 transfer = V4L2_XFER_FUNC_NONE;
3682 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Desired format %dx%d, format "
3683 "%" GST_FOURCC_FORMAT " stride: %d", width, height,
3684 GST_FOURCC_ARGS (pixelformat), GST_VIDEO_INFO_PLANE_STRIDE (&info, 0));
3686 memset (&format, 0x00, sizeof (struct v4l2_format));
3687 format.type = v4l2object->type;
3690 format.type = v4l2object->type;
3691 format.fmt.pix_mp.pixelformat = pixelformat;
3692 format.fmt.pix_mp.width = width;
3693 format.fmt.pix_mp.height = height;
3694 format.fmt.pix_mp.field = field;
3695 format.fmt.pix_mp.num_planes = n_v4l_planes;
3697 /* try to ask our preferred stride but it's not a failure if not
3699 for (i = 0; i < n_v4l_planes; i++) {
3700 gint stride = GST_VIDEO_INFO_PLANE_STRIDE (&info, i);
3702 if (GST_VIDEO_FORMAT_INFO_IS_TILED (info.finfo))
3703 stride = GST_VIDEO_TILE_X_TILES (stride) <<
3704 GST_VIDEO_FORMAT_INFO_TILE_WS (info.finfo);
3706 format.fmt.pix_mp.plane_fmt[i].bytesperline = stride;
3709 if (GST_VIDEO_INFO_FORMAT (&info) == GST_VIDEO_FORMAT_ENCODED)
3710 format.fmt.pix_mp.plane_fmt[0].sizeimage = ENCODED_BUFFER_SIZE;
3712 gint stride = GST_VIDEO_INFO_PLANE_STRIDE (&info, 0);
3714 format.type = v4l2object->type;
3716 format.fmt.pix.width = width;
3717 format.fmt.pix.height = height;
3718 format.fmt.pix.pixelformat = pixelformat;
3719 format.fmt.pix.field = field;
3721 if (GST_VIDEO_FORMAT_INFO_IS_TILED (info.finfo))
3722 stride = GST_VIDEO_TILE_X_TILES (stride) <<
3723 GST_VIDEO_FORMAT_INFO_TILE_WS (info.finfo);
3725 /* try to ask our preferred stride */
3726 format.fmt.pix.bytesperline = stride;
3728 if (GST_VIDEO_INFO_FORMAT (&info) == GST_VIDEO_FORMAT_ENCODED)
3729 format.fmt.pix.sizeimage = ENCODED_BUFFER_SIZE;
3732 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Desired format is %dx%d, format "
3733 "%" GST_FOURCC_FORMAT ", nb planes %d", format.fmt.pix.width,
3734 format.fmt.pix_mp.height,
3735 GST_FOURCC_ARGS (format.fmt.pix.pixelformat),
3736 is_mplane ? format.fmt.pix_mp.num_planes : 1);
3738 #ifndef GST_DISABLE_GST_DEBUG
3740 for (i = 0; i < format.fmt.pix_mp.num_planes; i++)
3741 GST_DEBUG_OBJECT (v4l2object->dbg_obj, " stride %d",
3742 format.fmt.pix_mp.plane_fmt[i].bytesperline);
3744 GST_DEBUG_OBJECT (v4l2object->dbg_obj, " stride %d",
3745 format.fmt.pix.bytesperline);
3750 format.fmt.pix_mp.colorspace = colorspace;
3751 format.fmt.pix_mp.quantization = range;
3752 format.fmt.pix_mp.ycbcr_enc = matrix;
3753 format.fmt.pix_mp.xfer_func = transfer;
3755 format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
3756 format.fmt.pix.colorspace = colorspace;
3757 format.fmt.pix.quantization = range;
3758 format.fmt.pix.ycbcr_enc = matrix;
3759 format.fmt.pix.xfer_func = transfer;
3762 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Desired colorspace is %d:%d:%d:%d",
3763 colorspace, range, matrix, transfer);
3766 if (v4l2object->ioctl (fd, VIDIOC_TRY_FMT, &format) < 0)
3767 goto try_fmt_failed;
3769 if (v4l2object->ioctl (fd, VIDIOC_S_FMT, &format) < 0)
3770 goto set_fmt_failed;
3774 colorspace = format.fmt.pix_mp.colorspace;
3775 range = format.fmt.pix_mp.quantization;
3776 matrix = format.fmt.pix_mp.ycbcr_enc;
3777 transfer = format.fmt.pix_mp.xfer_func;
3779 colorspace = format.fmt.pix.colorspace;
3780 range = format.fmt.pix.quantization;
3781 matrix = format.fmt.pix.ycbcr_enc;
3782 transfer = format.fmt.pix.xfer_func;
3785 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Got format of %dx%d, format "
3786 "%" GST_FOURCC_FORMAT ", nb planes %d, colorspace %d:%d:%d:%d field: %s",
3787 format.fmt.pix.width, format.fmt.pix_mp.height,
3788 GST_FOURCC_ARGS (format.fmt.pix.pixelformat),
3789 is_mplane ? format.fmt.pix_mp.num_planes : 1,
3790 colorspace, range, matrix, transfer, field_to_str (format.fmt.pix.field));
3792 #ifndef GST_DISABLE_GST_DEBUG
3794 for (i = 0; i < format.fmt.pix_mp.num_planes; i++)
3795 GST_DEBUG_OBJECT (v4l2object->dbg_obj, " stride %d, sizeimage %d",
3796 format.fmt.pix_mp.plane_fmt[i].bytesperline,
3797 format.fmt.pix_mp.plane_fmt[i].sizeimage);
3799 GST_DEBUG_OBJECT (v4l2object->dbg_obj, " stride %d, sizeimage %d",
3800 format.fmt.pix.bytesperline, format.fmt.pix.sizeimage);
3804 if (format.fmt.pix.pixelformat != pixelformat)
3805 goto invalid_pixelformat;
3807 /* Only negotiate size with raw data.
3808 * For some codecs the dimensions are *not* in the bitstream, IIRC VC1
3809 * in ASF mode for example, there is also not reason for a driver to
3810 * change the size. */
3811 if (info.finfo->format != GST_VIDEO_FORMAT_ENCODED) {
3812 /* We can crop larger images */
3813 if (format.fmt.pix.width < width || format.fmt.pix.height < height)
3814 goto invalid_dimensions;
3816 /* Note, this will be adjusted if upstream has non-centered cropping. */
3817 align.padding_top = 0;
3818 align.padding_bottom = format.fmt.pix.height - height;
3819 align.padding_left = 0;
3820 align.padding_right = format.fmt.pix.width - width;
3823 if (is_mplane && format.fmt.pix_mp.num_planes != n_v4l_planes)
3824 goto invalid_planes;
3826 /* used to check colorimetry and interlace mode fields presence */
3827 s = gst_caps_get_structure (caps, 0);
3829 if (gst_v4l2_object_get_interlace_mode (format.fmt.pix.field,
3830 &info.interlace_mode)) {
3831 if (gst_structure_has_field (s, "interlace-mode")) {
3832 if (format.fmt.pix.field != field)
3836 /* The driver (or libv4l2) is miss-behaving, just ignore interlace-mode from
3838 disable_interlacing = TRUE;
3839 if (gst_structure_has_field (s, "interlace-mode"))
3840 gst_structure_remove_field (s, "interlace-mode");
3843 if (gst_v4l2_object_get_colorspace (v4l2object, &format, &info.colorimetry)) {
3844 if (gst_structure_has_field (s, "colorimetry")) {
3845 if (!gst_v4l2_video_colorimetry_matches (&info.colorimetry, caps))
3846 goto invalid_colorimetry;
3849 /* The driver (or libv4l2) is miss-behaving, just ignore colorimetry from
3851 disable_colorimetry = TRUE;
3852 if (gst_structure_has_field (s, "colorimetry"))
3853 gst_structure_remove_field (s, "colorimetry");
3856 /* In case we have skipped the try_fmt probes, we'll need to set the
3857 * interlace-mode and colorimetry back into the caps. */
3858 if (v4l2object->skip_try_fmt_probes) {
3859 if (!disable_interlacing && !gst_structure_has_field (s, "interlace-mode")) {
3860 gst_structure_set (s, "interlace-mode", G_TYPE_STRING,
3861 gst_video_interlace_mode_to_string (info.interlace_mode), NULL);
3863 if (!disable_colorimetry && !gst_structure_has_field (s, "colorimetry")) {
3864 gchar *str = gst_video_colorimetry_to_string (&info.colorimetry);
3865 gst_structure_set (s, "colorimetry", G_TYPE_STRING, str, NULL);
3870 if (try_only) /* good enough for trying only */
3873 if (GST_VIDEO_INFO_HAS_ALPHA (&info)) {
3874 struct v4l2_control ctl = { 0, };
3875 ctl.id = V4L2_CID_ALPHA_COMPONENT;
3878 if (v4l2object->ioctl (fd, VIDIOC_S_CTRL, &ctl) < 0)
3879 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3880 "Failed to set alpha component value");
3883 /* Is there a reason we require the caller to always specify a framerate? */
3884 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Desired framerate: %u/%u", fps_n,
3887 memset (&streamparm, 0x00, sizeof (struct v4l2_streamparm));
3888 streamparm.type = v4l2object->type;
3890 if (v4l2object->ioctl (fd, VIDIOC_G_PARM, &streamparm) < 0)
3891 goto get_parm_failed;
3893 if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE
3894 || v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
3895 GST_VIDEO_INFO_FPS_N (&info) =
3896 streamparm.parm.capture.timeperframe.denominator;
3897 GST_VIDEO_INFO_FPS_D (&info) =
3898 streamparm.parm.capture.timeperframe.numerator;
3900 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Got capture framerate: %u/%u",
3901 streamparm.parm.capture.timeperframe.denominator,
3902 streamparm.parm.capture.timeperframe.numerator);
3904 /* We used to skip frame rate setup if the camera was already setup
3905 * with the requested frame rate. This breaks some cameras though,
3906 * causing them to not output data (several models of Thinkpad cameras
3907 * have this problem at least).
3908 * So, don't skip. */
3909 GST_LOG_OBJECT (v4l2object->dbg_obj, "Setting capture framerate to %u/%u",
3911 /* We want to change the frame rate, so check whether we can. Some cheap USB
3912 * cameras don't have the capability */
3913 if ((streamparm.parm.capture.capability & V4L2_CAP_TIMEPERFRAME) == 0) {
3914 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
3915 "Not setting capture framerate (not supported)");
3919 /* Note: V4L2 wants the frame interval, we have the frame rate */
3920 streamparm.parm.capture.timeperframe.numerator = fps_d;
3921 streamparm.parm.capture.timeperframe.denominator = fps_n;
3923 /* some cheap USB cam's won't accept any change */
3924 if (v4l2object->ioctl (fd, VIDIOC_S_PARM, &streamparm) < 0)
3925 goto set_parm_failed;
3927 if (streamparm.parm.capture.timeperframe.numerator > 0 &&
3928 streamparm.parm.capture.timeperframe.denominator > 0) {
3929 /* get new values */
3930 fps_d = streamparm.parm.capture.timeperframe.numerator;
3931 fps_n = streamparm.parm.capture.timeperframe.denominator;
3933 GST_INFO_OBJECT (v4l2object->dbg_obj, "Set capture framerate to %u/%u",
3936 /* fix v4l2 capture driver to provide framerate values */
3937 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3938 "Reuse caps framerate %u/%u - fix v4l2 capture driver", fps_n, fps_d);
3941 GST_VIDEO_INFO_FPS_N (&info) = fps_n;
3942 GST_VIDEO_INFO_FPS_D (&info) = fps_d;
3943 } else if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_OUTPUT
3944 || v4l2object->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
3945 GST_VIDEO_INFO_FPS_N (&info) =
3946 streamparm.parm.output.timeperframe.denominator;
3947 GST_VIDEO_INFO_FPS_D (&info) =
3948 streamparm.parm.output.timeperframe.numerator;
3950 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Got output framerate: %u/%u",
3951 streamparm.parm.output.timeperframe.denominator,
3952 streamparm.parm.output.timeperframe.numerator);
3954 GST_LOG_OBJECT (v4l2object->dbg_obj, "Setting output framerate to %u/%u",
3956 if ((streamparm.parm.output.capability & V4L2_CAP_TIMEPERFRAME) == 0) {
3957 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
3958 "Not setting output framerate (not supported)");
3962 /* Note: V4L2 wants the frame interval, we have the frame rate */
3963 streamparm.parm.output.timeperframe.numerator = fps_d;
3964 streamparm.parm.output.timeperframe.denominator = fps_n;
3966 if (v4l2object->ioctl (fd, VIDIOC_S_PARM, &streamparm) < 0)
3967 goto set_parm_failed;
3969 if (streamparm.parm.output.timeperframe.numerator > 0 &&
3970 streamparm.parm.output.timeperframe.denominator > 0) {
3971 /* get new values */
3972 fps_d = streamparm.parm.output.timeperframe.numerator;
3973 fps_n = streamparm.parm.output.timeperframe.denominator;
3975 GST_INFO_OBJECT (v4l2object->dbg_obj, "Set output framerate to %u/%u",
3978 /* fix v4l2 output driver to provide framerate values */
3979 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3980 "Reuse caps framerate %u/%u - fix v4l2 output driver", fps_n, fps_d);
3983 GST_VIDEO_INFO_FPS_N (&info) = fps_n;
3984 GST_VIDEO_INFO_FPS_D (&info) = fps_d;
3988 /* add boolean return, so we can fail on drivers bugs */
3989 gst_v4l2_object_save_format (v4l2object, fmtdesc, &format, &info, &align);
3991 /* now configure the pool */
3992 if (!gst_v4l2_object_setup_pool (v4l2object, caps))
4000 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "can't parse caps %" GST_PTR_FORMAT,
4003 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
4004 (_("Invalid caps")), ("Can't parse caps %" GST_PTR_FORMAT, caps));
4009 if (errno == EINVAL) {
4010 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
4011 (_("Device '%s' has no supported format"), v4l2object->videodev),
4012 ("Call to TRY_FMT failed for %" GST_FOURCC_FORMAT " @ %dx%d: %s",
4013 GST_FOURCC_ARGS (pixelformat), width, height,
4014 g_strerror (errno)));
4016 GST_V4L2_ERROR (error, RESOURCE, FAILED,
4017 (_("Device '%s' failed during initialization"),
4018 v4l2object->videodev),
4019 ("Call to TRY_FMT failed for %" GST_FOURCC_FORMAT " @ %dx%d: %s",
4020 GST_FOURCC_ARGS (pixelformat), width, height,
4021 g_strerror (errno)));
4027 if (errno == EBUSY) {
4028 GST_V4L2_ERROR (error, RESOURCE, BUSY,
4029 (_("Device '%s' is busy"), v4l2object->videodev),
4030 ("Call to S_FMT failed for %" GST_FOURCC_FORMAT " @ %dx%d: %s",
4031 GST_FOURCC_ARGS (pixelformat), width, height,
4032 g_strerror (errno)));
4033 } else if (errno == EINVAL) {
4034 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
4035 (_("Device '%s' has no supported format"), v4l2object->videodev),
4036 ("Call to S_FMT failed for %" GST_FOURCC_FORMAT " @ %dx%d: %s",
4037 GST_FOURCC_ARGS (pixelformat), width, height,
4038 g_strerror (errno)));
4040 GST_V4L2_ERROR (error, RESOURCE, FAILED,
4041 (_("Device '%s' failed during initialization"),
4042 v4l2object->videodev),
4043 ("Call to S_FMT failed for %" GST_FOURCC_FORMAT " @ %dx%d: %s",
4044 GST_FOURCC_ARGS (pixelformat), width, height,
4045 g_strerror (errno)));
4051 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
4052 (_("Device '%s' cannot capture at %dx%d"),
4053 v4l2object->videodev, width, height),
4054 ("Tried to capture at %dx%d, but device returned size %dx%d",
4055 width, height, format.fmt.pix.width, format.fmt.pix.height));
4058 invalid_pixelformat:
4060 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
4061 (_("Device '%s' cannot capture in the specified format"),
4062 v4l2object->videodev),
4063 ("Tried to capture in %" GST_FOURCC_FORMAT
4064 ", but device returned format" " %" GST_FOURCC_FORMAT,
4065 GST_FOURCC_ARGS (pixelformat),
4066 GST_FOURCC_ARGS (format.fmt.pix.pixelformat)));
4071 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
4072 (_("Device '%s' does support non-contiguous planes"),
4073 v4l2object->videodev),
4074 ("Device wants %d planes", format.fmt.pix_mp.num_planes));
4079 enum v4l2_field wanted_field;
4082 wanted_field = format.fmt.pix_mp.field;
4084 wanted_field = format.fmt.pix.field;
4086 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
4087 (_("Device '%s' does not support %s interlacing"),
4088 v4l2object->videodev,
4089 field == V4L2_FIELD_NONE ? "progressive" : "interleaved"),
4090 ("Device wants %s interlacing",
4091 wanted_field == V4L2_FIELD_NONE ? "progressive" : "interleaved"));
4094 invalid_colorimetry:
4096 gchar *wanted_colorimetry;
4098 wanted_colorimetry = gst_video_colorimetry_to_string (&info.colorimetry);
4100 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
4101 (_("Device '%s' does not support %s colorimetry"),
4102 v4l2object->videodev, gst_structure_get_string (s, "colorimetry")),
4103 ("Device wants %s colorimetry", wanted_colorimetry));
4105 g_free (wanted_colorimetry);
4110 /* it's possible that this call is not supported */
4111 if (errno != EINVAL && errno != ENOTTY) {
4112 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
4113 (_("Could not get parameters on device '%s'"),
4114 v4l2object->videodev), GST_ERROR_SYSTEM);
4120 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
4121 (_("Video device did not accept new frame rate setting.")),
4127 /* setup_pool already send the error */
4133 gst_v4l2_object_set_format (GstV4l2Object * v4l2object, GstCaps * caps,
4134 GstV4l2Error * error)
4136 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Setting format to %" GST_PTR_FORMAT,
4138 return gst_v4l2_object_set_format_full (v4l2object, caps, FALSE, error);
4142 gst_v4l2_object_try_format (GstV4l2Object * v4l2object, GstCaps * caps,
4143 GstV4l2Error * error)
4145 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Trying format %" GST_PTR_FORMAT,
4147 return gst_v4l2_object_set_format_full (v4l2object, caps, TRUE, error);
4151 * gst_v4l2_object_acquire_format:
4152 * @v4l2object: the object
4153 * @info: a GstVideoInfo to be filled
4155 * Acquire the driver chosen format. This is useful in decoder or encoder elements where
4156 * the output format is chosen by the HW.
4158 * Returns: %TRUE on success, %FALSE on failure.
4161 gst_v4l2_object_acquire_format (GstV4l2Object * v4l2object, GstVideoInfo * info)
4163 struct v4l2_fmtdesc *fmtdesc;
4164 struct v4l2_format fmt;
4165 struct v4l2_crop crop;
4166 struct v4l2_selection sel;
4167 struct v4l2_rect *r = NULL;
4168 GstVideoFormat format;
4169 guint width, height;
4170 GstVideoAlignment align;
4171 GstVideoInterlaceMode interlace_mode;
4173 gst_video_info_init (info);
4174 gst_video_alignment_reset (&align);
4176 memset (&fmt, 0x00, sizeof (struct v4l2_format));
4177 fmt.type = v4l2object->type;
4178 if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_G_FMT, &fmt) < 0)
4179 goto get_fmt_failed;
4181 fmtdesc = gst_v4l2_object_get_format_from_fourcc (v4l2object,
4182 fmt.fmt.pix.pixelformat);
4183 if (fmtdesc == NULL)
4184 goto unsupported_format;
4186 /* No need to care about mplane, the four first params are the same */
4187 format = gst_v4l2_object_v4l2fourcc_to_video_format (fmt.fmt.pix.pixelformat);
4189 /* fails if we do no translate the fmt.pix.pixelformat to GstVideoFormat */
4190 if (format == GST_VIDEO_FORMAT_UNKNOWN)
4191 goto unsupported_format;
4193 if (fmt.fmt.pix.width == 0 || fmt.fmt.pix.height == 0)
4194 goto invalid_dimensions;
4196 width = fmt.fmt.pix.width;
4197 height = fmt.fmt.pix.height;
4199 /* Use the default compose rectangle */
4200 memset (&sel, 0, sizeof (struct v4l2_selection));
4201 sel.type = v4l2object->type;
4202 sel.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
4203 if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_G_SELECTION, &sel) >= 0) {
4206 /* For ancient kernels, fall back to G_CROP */
4207 memset (&crop, 0, sizeof (struct v4l2_crop));
4208 crop.type = v4l2object->type;
4209 if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_G_CROP, &crop) >= 0)
4213 align.padding_left = r->left;
4214 align.padding_top = r->top;
4215 align.padding_right = width - r->width - r->left;
4216 align.padding_bottom = height - r->height - r->top;
4221 switch (fmt.fmt.pix.field) {
4222 case V4L2_FIELD_ANY:
4223 case V4L2_FIELD_NONE:
4224 interlace_mode = GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
4226 case V4L2_FIELD_INTERLACED:
4227 case V4L2_FIELD_INTERLACED_TB:
4228 case V4L2_FIELD_INTERLACED_BT:
4229 interlace_mode = GST_VIDEO_INTERLACE_MODE_INTERLEAVED;
4231 case V4L2_FIELD_ALTERNATE:
4232 interlace_mode = GST_VIDEO_INTERLACE_MODE_ALTERNATE;
4235 goto unsupported_field;
4238 gst_video_info_set_interlaced_format (info, format, interlace_mode, width,
4241 gst_v4l2_object_get_colorspace (v4l2object, &fmt, &info->colorimetry);
4242 gst_v4l2_object_get_streamparm (v4l2object, info);
4243 if ((info->fps_n == 0 && v4l2object->info.fps_d != 0)
4244 && (v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE
4245 || v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) {
4246 info->fps_d = v4l2object->info.fps_d;
4247 info->fps_n = v4l2object->info.fps_n;
4248 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Set capture fps to %d/%d",
4249 info->fps_n, info->fps_d);
4252 gst_v4l2_object_save_format (v4l2object, fmtdesc, &fmt, info, &align);
4254 /* Shall we setup the pool ? */
4260 GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
4261 (_("Video device did not provide output format.")), GST_ERROR_SYSTEM);
4266 GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
4267 (_("Video device returned invalid dimensions.")),
4268 ("Expected non 0 dimensions, got %dx%d", fmt.fmt.pix.width,
4269 fmt.fmt.pix.height));
4274 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
4275 (_("Video device uses an unsupported interlacing method.")),
4276 ("V4L2 field type %d not supported", fmt.fmt.pix.field));
4281 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
4282 (_("Video device uses an unsupported pixel format.")),
4283 ("V4L2 format %" GST_FOURCC_FORMAT " not supported",
4284 GST_FOURCC_ARGS (fmt.fmt.pix.pixelformat)));
4290 gst_v4l2_object_set_crop (GstV4l2Object * obj)
4292 struct v4l2_selection sel = { 0 };
4293 struct v4l2_crop crop = { 0 };
4295 sel.type = obj->type;
4296 sel.target = V4L2_SEL_TGT_CROP;
4298 sel.r.left = obj->align.padding_left;
4299 sel.r.top = obj->align.padding_top;
4300 sel.r.width = obj->info.width;
4301 sel.r.height = GST_VIDEO_INFO_FIELD_HEIGHT (&obj->info);
4303 crop.type = obj->type;
4306 if (obj->align.padding_left + obj->align.padding_top +
4307 obj->align.padding_right + obj->align.padding_bottom == 0) {
4308 GST_DEBUG_OBJECT (obj->dbg_obj, "no cropping needed");
4312 GST_DEBUG_OBJECT (obj->dbg_obj,
4313 "Desired cropping left %u, top %u, size %ux%u", crop.c.left, crop.c.top,
4314 crop.c.width, crop.c.height);
4316 if (obj->ioctl (obj->video_fd, VIDIOC_S_SELECTION, &sel) < 0) {
4317 if (errno != ENOTTY) {
4318 GST_WARNING_OBJECT (obj->dbg_obj,
4319 "Failed to set crop rectangle with VIDIOC_S_SELECTION: %s",
4320 g_strerror (errno));
4323 if (obj->ioctl (obj->video_fd, VIDIOC_S_CROP, &crop) < 0) {
4324 GST_WARNING_OBJECT (obj->dbg_obj, "VIDIOC_S_CROP failed");
4328 if (obj->ioctl (obj->video_fd, VIDIOC_G_CROP, &crop) < 0) {
4329 GST_WARNING_OBJECT (obj->dbg_obj, "VIDIOC_G_CROP failed");
4337 GST_DEBUG_OBJECT (obj->dbg_obj,
4338 "Got cropping left %u, top %u, size %ux%u", crop.c.left, crop.c.top,
4339 crop.c.width, crop.c.height);
4345 gst_v4l2_object_caps_equal (GstV4l2Object * v4l2object, GstCaps * caps)
4347 GstStructure *config;
4351 if (!v4l2object->pool)
4354 config = gst_buffer_pool_get_config (v4l2object->pool);
4355 gst_buffer_pool_config_get_params (config, &oldcaps, NULL, NULL, NULL);
4357 ret = oldcaps && gst_caps_is_equal (caps, oldcaps);
4359 gst_structure_free (config);
4365 gst_v4l2_object_caps_is_subset (GstV4l2Object * v4l2object, GstCaps * caps)
4367 GstStructure *config;
4371 if (!v4l2object->pool)
4374 config = gst_buffer_pool_get_config (v4l2object->pool);
4375 gst_buffer_pool_config_get_params (config, &oldcaps, NULL, NULL, NULL);
4377 ret = oldcaps && gst_caps_is_subset (oldcaps, caps);
4379 gst_structure_free (config);
4385 gst_v4l2_object_get_current_caps (GstV4l2Object * v4l2object)
4387 GstStructure *config;
4390 if (!v4l2object->pool)
4393 config = gst_buffer_pool_get_config (v4l2object->pool);
4394 gst_buffer_pool_config_get_params (config, &oldcaps, NULL, NULL, NULL);
4397 gst_caps_ref (oldcaps);
4399 gst_structure_free (config);
4405 gst_v4l2_object_unlock (GstV4l2Object * v4l2object)
4407 gboolean ret = TRUE;
4409 GST_LOG_OBJECT (v4l2object->dbg_obj, "start flushing");
4411 if (v4l2object->pool && gst_buffer_pool_is_active (v4l2object->pool))
4412 gst_buffer_pool_set_flushing (v4l2object->pool, TRUE);
4418 gst_v4l2_object_unlock_stop (GstV4l2Object * v4l2object)
4420 gboolean ret = TRUE;
4422 GST_LOG_OBJECT (v4l2object->dbg_obj, "stop flushing");
4424 if (v4l2object->pool && gst_buffer_pool_is_active (v4l2object->pool))
4425 gst_buffer_pool_set_flushing (v4l2object->pool, FALSE);
4431 gst_v4l2_object_stop (GstV4l2Object * v4l2object)
4433 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "stopping");
4435 if (!GST_V4L2_IS_OPEN (v4l2object))
4437 if (!GST_V4L2_IS_ACTIVE (v4l2object))
4440 if (v4l2object->pool) {
4441 if (!gst_v4l2_buffer_pool_orphan (&v4l2object->pool)) {
4442 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "deactivating pool");
4443 gst_buffer_pool_set_active (v4l2object->pool, FALSE);
4444 gst_object_unref (v4l2object->pool);
4446 v4l2object->pool = NULL;
4449 GST_V4L2_SET_INACTIVE (v4l2object);
4456 gst_v4l2_object_probe_caps (GstV4l2Object * v4l2object, GstCaps * filter)
4462 formats = gst_v4l2_object_get_format_list (v4l2object);
4464 ret = gst_caps_new_empty ();
4466 if (v4l2object->keep_aspect && !v4l2object->par) {
4467 struct v4l2_cropcap cropcap;
4469 memset (&cropcap, 0, sizeof (cropcap));
4471 cropcap.type = v4l2object->type;
4472 if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_CROPCAP, &cropcap) < 0) {
4473 if (errno != ENOTTY)
4474 GST_WARNING_OBJECT (v4l2object->dbg_obj,
4475 "Failed to probe pixel aspect ratio with VIDIOC_CROPCAP: %s",
4476 g_strerror (errno));
4477 } else if (cropcap.pixelaspect.numerator && cropcap.pixelaspect.denominator) {
4478 v4l2object->par = g_new0 (GValue, 1);
4479 g_value_init (v4l2object->par, GST_TYPE_FRACTION);
4480 gst_value_set_fraction (v4l2object->par, cropcap.pixelaspect.numerator,
4481 cropcap.pixelaspect.denominator);
4485 for (walk = formats; walk; walk = walk->next) {
4486 struct v4l2_fmtdesc *format;
4487 GstStructure *template;
4490 format = (struct v4l2_fmtdesc *) walk->data;
4492 template = gst_v4l2_object_v4l2fourcc_to_bare_struct (format->pixelformat);
4495 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
4496 "unknown format %" GST_FOURCC_FORMAT,
4497 GST_FOURCC_ARGS (format->pixelformat));
4501 /* If we have a filter, check if we need to probe this format or not */
4503 GstCaps *format_caps = gst_caps_new_empty ();
4505 gst_caps_append_structure (format_caps, gst_structure_copy (template));
4507 if (!gst_caps_can_intersect (format_caps, filter)) {
4508 gst_caps_unref (format_caps);
4509 gst_structure_free (template);
4513 gst_caps_unref (format_caps);
4516 tmp = gst_v4l2_object_probe_caps_for_format (v4l2object,
4517 format->pixelformat, template);
4519 gst_caps_append (ret, tmp);
4521 /* Add a variant of the caps with the Interlaced feature so we can negotiate it if needed */
4522 add_alternate_variant (v4l2object, ret, gst_caps_get_structure (ret,
4523 gst_caps_get_size (ret) - 1));
4526 gst_structure_free (template);
4533 ret = gst_caps_intersect_full (filter, ret, GST_CAPS_INTERSECT_FIRST);
4534 gst_caps_unref (tmp);
4537 GST_INFO_OBJECT (v4l2object->dbg_obj, "probed caps: %" GST_PTR_FORMAT, ret);
4543 gst_v4l2_object_get_caps (GstV4l2Object * v4l2object, GstCaps * filter)
4547 if (v4l2object->probed_caps == NULL)
4548 v4l2object->probed_caps = gst_v4l2_object_probe_caps (v4l2object, NULL);
4551 ret = gst_caps_intersect_full (filter, v4l2object->probed_caps,
4552 GST_CAPS_INTERSECT_FIRST);
4554 ret = gst_caps_ref (v4l2object->probed_caps);
4561 gst_v4l2_object_match_buffer_layout (GstV4l2Object * obj, guint n_planes,
4562 gsize offset[GST_VIDEO_MAX_PLANES], gint stride[GST_VIDEO_MAX_PLANES],
4563 gsize buffer_size, guint padded_height)
4566 gboolean need_fmt_update = FALSE;
4568 if (n_planes != GST_VIDEO_INFO_N_PLANES (&obj->info)) {
4569 GST_WARNING_OBJECT (obj->dbg_obj,
4570 "Cannot match buffers with different number planes");
4574 for (p = 0; p < n_planes; p++) {
4575 if (stride[p] < obj->info.stride[p]) {
4576 GST_DEBUG_OBJECT (obj->dbg_obj,
4577 "Not matching as remote stride %i is smaller than %i on plane %u",
4578 stride[p], obj->info.stride[p], p);
4580 } else if (stride[p] > obj->info.stride[p]) {
4581 GST_LOG_OBJECT (obj->dbg_obj,
4582 "remote stride %i is higher than %i on plane %u",
4583 stride[p], obj->info.stride[p], p);
4584 need_fmt_update = TRUE;
4587 if (offset[p] < obj->info.offset[p]) {
4588 GST_DEBUG_OBJECT (obj->dbg_obj,
4589 "Not matching as offset %" G_GSIZE_FORMAT
4590 " is smaller than %" G_GSIZE_FORMAT " on plane %u",
4591 offset[p], obj->info.offset[p], p);
4593 } else if (offset[p] > obj->info.offset[p]) {
4594 GST_LOG_OBJECT (obj->dbg_obj,
4595 "Remote offset %" G_GSIZE_FORMAT
4596 " is higher than %" G_GSIZE_FORMAT " on plane %u",
4597 offset[p], obj->info.offset[p], p);
4598 need_fmt_update = TRUE;
4602 if (need_fmt_update) {
4603 struct v4l2_format format;
4604 gint wanted_stride[GST_VIDEO_MAX_PLANES] = { 0, };
4606 format = obj->format;
4608 if (padded_height) {
4609 GST_DEBUG_OBJECT (obj->dbg_obj, "Padded height %u", padded_height);
4611 obj->align.padding_bottom =
4612 padded_height - GST_VIDEO_INFO_FIELD_HEIGHT (&obj->info);
4614 GST_WARNING_OBJECT (obj->dbg_obj,
4615 "Failed to compute padded height; keep the default one");
4616 padded_height = format.fmt.pix_mp.height;
4619 /* update the current format with the stride we want to import from */
4620 if (V4L2_TYPE_IS_MULTIPLANAR (obj->type)) {
4623 GST_DEBUG_OBJECT (obj->dbg_obj, "Wanted strides:");
4625 for (i = 0; i < obj->n_v4l2_planes; i++) {
4626 gint plane_stride = stride[i];
4628 if (GST_VIDEO_FORMAT_INFO_IS_TILED (obj->info.finfo))
4629 plane_stride = GST_VIDEO_TILE_X_TILES (plane_stride) <<
4630 GST_VIDEO_FORMAT_INFO_TILE_WS (obj->info.finfo);
4632 format.fmt.pix_mp.plane_fmt[i].bytesperline = plane_stride;
4633 format.fmt.pix_mp.height = padded_height;
4634 wanted_stride[i] = plane_stride;
4635 GST_DEBUG_OBJECT (obj->dbg_obj, " [%u] %i", i, wanted_stride[i]);
4638 gint plane_stride = stride[0];
4640 GST_DEBUG_OBJECT (obj->dbg_obj, "Wanted stride: %i", plane_stride);
4642 if (GST_VIDEO_FORMAT_INFO_IS_TILED (obj->info.finfo))
4643 plane_stride = GST_VIDEO_TILE_X_TILES (plane_stride) <<
4644 GST_VIDEO_FORMAT_INFO_TILE_WS (obj->info.finfo);
4646 format.fmt.pix.bytesperline = plane_stride;
4647 format.fmt.pix.height = padded_height;
4648 wanted_stride[0] = plane_stride;
4651 if (obj->ioctl (obj->video_fd, VIDIOC_S_FMT, &format) < 0) {
4652 GST_WARNING_OBJECT (obj->dbg_obj,
4653 "Something went wrong trying to update current format: %s",
4654 g_strerror (errno));
4658 gst_v4l2_object_save_format (obj, obj->fmtdesc, &format, &obj->info,
4661 if (V4L2_TYPE_IS_MULTIPLANAR (obj->type)) {
4664 for (i = 0; i < obj->n_v4l2_planes; i++) {
4665 if (format.fmt.pix_mp.plane_fmt[i].bytesperline != wanted_stride[i]) {
4666 GST_DEBUG_OBJECT (obj->dbg_obj,
4667 "[%i] Driver did not accept the new stride (wants %i, got %i)",
4668 i, wanted_stride[i], format.fmt.pix_mp.plane_fmt[i].bytesperline);
4673 if (format.fmt.pix_mp.height != padded_height) {
4674 GST_DEBUG_OBJECT (obj->dbg_obj,
4675 "Driver did not accept the padded height (wants %i, got %i)",
4676 padded_height, format.fmt.pix_mp.height);
4679 if (format.fmt.pix.bytesperline != wanted_stride[0]) {
4680 GST_DEBUG_OBJECT (obj->dbg_obj,
4681 "Driver did not accept the new stride (wants %i, got %i)",
4682 wanted_stride[0], format.fmt.pix.bytesperline);
4686 if (format.fmt.pix.height != padded_height) {
4687 GST_DEBUG_OBJECT (obj->dbg_obj,
4688 "Driver did not accept the padded height (wants %i, got %i)",
4689 padded_height, format.fmt.pix.height);
4694 if (obj->align.padding_bottom) {
4695 /* Crop because of vertical padding */
4696 GST_DEBUG_OBJECT (obj->dbg_obj, "crop because of bottom padding of %d",
4697 obj->align.padding_bottom);
4698 gst_v4l2_object_set_crop (obj);
4705 validate_video_meta_struct (GstV4l2Object * obj, const GstStructure * s)
4709 for (i = 0; i < gst_structure_n_fields (s); i++) {
4710 const gchar *name = gst_structure_nth_field_name (s, i);
4712 if (!g_str_equal (name, "padding-top")
4713 && !g_str_equal (name, "padding-bottom")
4714 && !g_str_equal (name, "padding-left")
4715 && !g_str_equal (name, "padding-right")) {
4716 GST_WARNING_OBJECT (obj->dbg_obj, "Unknown video meta field: '%s'", name);
4725 gst_v4l2_object_match_buffer_layout_from_struct (GstV4l2Object * obj,
4726 const GstStructure * s, GstCaps * caps, guint buffer_size)
4729 GstVideoAlignment align;
4730 gsize plane_size[GST_VIDEO_MAX_PLANES];
4732 if (!validate_video_meta_struct (obj, s))
4735 if (!gst_video_info_from_caps (&info, caps)) {
4736 GST_WARNING_OBJECT (obj->dbg_obj, "Failed to create video info");
4740 gst_video_alignment_reset (&align);
4742 gst_structure_get_uint (s, "padding-top", &align.padding_top);
4743 gst_structure_get_uint (s, "padding-bottom", &align.padding_bottom);
4744 gst_structure_get_uint (s, "padding-left", &align.padding_left);
4745 gst_structure_get_uint (s, "padding-right", &align.padding_right);
4747 if (align.padding_top || align.padding_bottom || align.padding_left ||
4748 align.padding_right) {
4749 GST_DEBUG_OBJECT (obj->dbg_obj,
4750 "Upstream requested padding (top: %d bottom: %d left: %d right: %d)",
4751 align.padding_top, align.padding_bottom, align.padding_left,
4752 align.padding_right);
4755 if (!gst_video_info_align_full (&info, &align, plane_size)) {
4756 GST_WARNING_OBJECT (obj->dbg_obj, "Failed to align video info");
4760 if (GST_VIDEO_INFO_SIZE (&info) != buffer_size) {
4761 GST_WARNING_OBJECT (obj->dbg_obj,
4762 "Requested buffer size (%d) doesn't match video info size (%"
4763 G_GSIZE_FORMAT ")", buffer_size, GST_VIDEO_INFO_SIZE (&info));
4767 GST_DEBUG_OBJECT (obj->dbg_obj,
4768 "try matching buffer layout requested by downstream");
4770 gst_v4l2_object_match_buffer_layout (obj, GST_VIDEO_INFO_N_PLANES (&info),
4771 info.offset, info.stride, buffer_size,
4772 GST_VIDEO_INFO_PLANE_HEIGHT (&info, 0, plane_size));
4778 gst_v4l2_object_decide_allocation (GstV4l2Object * obj, GstQuery * query)
4781 GstBufferPool *pool = NULL, *other_pool = NULL;
4782 GstStructure *config;
4783 guint size, min, max, own_min = 0;
4785 gboolean has_video_meta;
4786 gboolean can_share_own_pool, pushing_from_our_pool = FALSE;
4787 GstAllocator *allocator = NULL;
4788 GstAllocationParams params = { 0 };
4791 GST_DEBUG_OBJECT (obj->dbg_obj, "decide allocation");
4793 g_return_val_if_fail (obj->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
4794 obj->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE, FALSE);
4796 gst_query_parse_allocation (query, &caps, NULL);
4798 if (obj->pool == NULL) {
4799 if (!gst_v4l2_object_setup_pool (obj, caps))
4803 if (gst_query_get_n_allocation_params (query) > 0)
4804 gst_query_parse_nth_allocation_param (query, 0, &allocator, ¶ms);
4806 if (gst_query_get_n_allocation_pools (query) > 0) {
4807 gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
4816 GST_DEBUG_OBJECT (obj->dbg_obj, "allocation: size:%u min:%u max:%u pool:%"
4817 GST_PTR_FORMAT, size, min, max, pool);
4820 gst_query_find_allocation_meta (query, GST_VIDEO_META_API_TYPE,
4823 if (has_video_meta) {
4824 const GstStructure *params;
4825 gst_query_parse_nth_allocation_meta (query, video_idx, ¶ms);
4828 gst_v4l2_object_match_buffer_layout_from_struct (obj, params, caps, size);
4831 can_share_own_pool = (has_video_meta || !obj->need_video_meta);
4833 gst_v4l2_get_driver_min_buffers (obj);
4834 /* We can't share our own pool, if it exceed V4L2 capacity */
4835 if (min + obj->min_buffers + 1 > VIDEO_MAX_FRAME)
4836 can_share_own_pool = FALSE;
4839 switch (obj->mode) {
4840 case GST_V4L2_IO_RW:
4842 /* in READ/WRITE mode, prefer a downstream pool because our own pool
4843 * doesn't help much, we have to write to it as well */
4844 GST_DEBUG_OBJECT (obj->dbg_obj,
4845 "read/write mode: using downstream pool");
4846 /* use the bigest size, when we use our own pool we can't really do any
4847 * other size than what the hardware gives us but for downstream pools
4849 size = MAX (size, obj->info.size);
4850 } else if (can_share_own_pool) {
4851 /* no downstream pool, use our own then */
4852 GST_DEBUG_OBJECT (obj->dbg_obj,
4853 "read/write mode: no downstream pool, using our own");
4854 pool = gst_object_ref (obj->pool);
4855 size = obj->info.size;
4856 pushing_from_our_pool = TRUE;
4860 case GST_V4L2_IO_USERPTR:
4861 case GST_V4L2_IO_DMABUF_IMPORT:
4862 /* in importing mode, prefer our own pool, and pass the other pool to
4863 * our own, so it can serve itself */
4865 goto no_downstream_pool;
4866 gst_v4l2_buffer_pool_set_other_pool (GST_V4L2_BUFFER_POOL (obj->pool),
4869 gst_object_unref (pool);
4870 pool = gst_object_ref (obj->pool);
4871 size = obj->info.size;
4874 case GST_V4L2_IO_MMAP:
4875 case GST_V4L2_IO_DMABUF:
4876 /* in streaming mode, prefer our own pool */
4877 /* Check if we can use it ... */
4878 if (can_share_own_pool) {
4880 gst_object_unref (pool);
4881 pool = gst_object_ref (obj->pool);
4882 size = obj->info.size;
4883 GST_DEBUG_OBJECT (obj->dbg_obj,
4884 "streaming mode: using our own pool %" GST_PTR_FORMAT, pool);
4885 pushing_from_our_pool = TRUE;
4887 GST_DEBUG_OBJECT (obj->dbg_obj,
4888 "streaming mode: copying to downstream pool %" GST_PTR_FORMAT,
4891 GST_DEBUG_OBJECT (obj->dbg_obj,
4892 "streaming mode: no usable pool, copying to generic pool");
4893 size = MAX (size, obj->info.size);
4896 case GST_V4L2_IO_AUTO:
4898 GST_WARNING_OBJECT (obj->dbg_obj, "unhandled mode");
4905 /* If pushing from our own pool, configure it with queried minimum,
4906 * otherwise use the minimum required */
4907 if (pushing_from_our_pool) {
4908 /* When pushing from our own pool, we need what downstream one, to be able
4909 * to fill the pipeline, the minimum required to decoder according to the
4910 * driver and 2 more, so we don't endup up with everything downstream or
4911 * held by the decoder. We account 2 buffers for v4l2 so when one is being
4912 * pushed downstream the other one can already be queued for the next
4914 own_min = min + obj->min_buffers + 2;
4916 /* If no allocation parameters where provided, allow for a little more
4917 * buffers and enable copy threshold */
4920 gst_v4l2_buffer_pool_copy_at_threshold (GST_V4L2_BUFFER_POOL (pool),
4923 gst_v4l2_buffer_pool_copy_at_threshold (GST_V4L2_BUFFER_POOL (pool),
4928 /* In this case we'll have to configure two buffer pool. For our buffer
4929 * pool, we'll need what the driver one, and one more, so we can dequeu */
4930 own_min = obj->min_buffers + 1;
4931 own_min = MAX (own_min, GST_V4L2_MIN_BUFFERS (obj));
4933 /* for the downstream pool, we keep what downstream wants, though ensure
4934 * at least a minimum if downstream didn't suggest anything (we are
4935 * expecting the base class to create a default one for the context) */
4936 min = MAX (min, GST_V4L2_MIN_BUFFERS (obj));
4938 /* To import we need the other pool to hold at least own_min */
4939 if (obj->pool == pool)
4943 /* Request a bigger max, if one was suggested but it's too small */
4945 max = MAX (min, max);
4947 /* First step, configure our own pool */
4948 config = gst_buffer_pool_get_config (obj->pool);
4950 if (obj->need_video_meta || has_video_meta) {
4951 GST_DEBUG_OBJECT (obj->dbg_obj, "activate Video Meta");
4952 gst_buffer_pool_config_add_option (config,
4953 GST_BUFFER_POOL_OPTION_VIDEO_META);
4956 gst_buffer_pool_config_set_allocator (config, allocator, ¶ms);
4957 gst_buffer_pool_config_set_params (config, caps, size, own_min, 0);
4959 GST_DEBUG_OBJECT (obj->dbg_obj, "setting own pool config to %"
4960 GST_PTR_FORMAT, config);
4962 /* Our pool often need to adjust the value */
4963 if (!gst_buffer_pool_set_config (obj->pool, config)) {
4964 config = gst_buffer_pool_get_config (obj->pool);
4966 GST_DEBUG_OBJECT (obj->dbg_obj, "own pool config changed to %"
4967 GST_PTR_FORMAT, config);
4969 /* our pool will adjust the maximum buffer, which we are fine with */
4970 if (!gst_buffer_pool_set_config (obj->pool, config))
4974 /* Now configure the other pool if different */
4975 if (obj->pool != pool)
4979 config = gst_buffer_pool_get_config (other_pool);
4980 gst_buffer_pool_config_set_allocator (config, allocator, ¶ms);
4981 gst_buffer_pool_config_set_params (config, caps, size, min, max);
4983 GST_DEBUG_OBJECT (obj->dbg_obj, "setting other pool config to %"
4984 GST_PTR_FORMAT, config);
4986 /* if downstream supports video metadata, add this to the pool config */
4987 if (has_video_meta) {
4988 GST_DEBUG_OBJECT (obj->dbg_obj, "activate Video Meta");
4989 gst_buffer_pool_config_add_option (config,
4990 GST_BUFFER_POOL_OPTION_VIDEO_META);
4993 if (!gst_buffer_pool_set_config (other_pool, config)) {
4994 config = gst_buffer_pool_get_config (other_pool);
4996 if (!gst_buffer_pool_config_validate_params (config, caps, size, min,
4998 gst_structure_free (config);
5002 if (!gst_buffer_pool_set_config (other_pool, config))
5008 /* For simplicity, simply read back the active configuration, so our base
5009 * class get the right information */
5010 config = gst_buffer_pool_get_config (pool);
5011 gst_buffer_pool_config_get_params (config, NULL, &size, &min, &max);
5012 gst_structure_free (config);
5016 gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
5018 gst_query_add_allocation_pool (query, pool, size, min, max);
5021 gst_object_unref (allocator);
5024 gst_object_unref (pool);
5030 /* setup_pool already send the error */
5035 GST_ELEMENT_ERROR (obj->element, RESOURCE, SETTINGS,
5036 (_("Failed to configure internal buffer pool.")), (NULL));
5041 GST_ELEMENT_ERROR (obj->element, RESOURCE, SETTINGS,
5042 (_("Video device did not suggest any buffer size.")), (NULL));
5048 gst_object_unref (allocator);
5051 gst_object_unref (pool);
5056 GST_ELEMENT_ERROR (obj->element, RESOURCE, SETTINGS,
5057 (_("No downstream pool to import from.")),
5058 ("When importing DMABUF or USERPTR, we need a pool to import from"));
5064 gst_v4l2_object_propose_allocation (GstV4l2Object * obj, GstQuery * query)
5066 GstBufferPool *pool = NULL;
5067 /* we need at least 2 buffers to operate */
5068 guint size, min, max;
5072 /* Set defaults allocation parameters */
5073 size = obj->info.size;
5074 min = GST_V4L2_MIN_BUFFERS (obj);
5075 max = VIDEO_MAX_FRAME;
5077 gst_query_parse_allocation (query, &caps, &need_pool);
5082 switch (obj->mode) {
5083 case GST_V4L2_IO_MMAP:
5084 case GST_V4L2_IO_DMABUF:
5085 if (need_pool && obj->pool) {
5086 if (!gst_buffer_pool_is_active (obj->pool))
5087 pool = gst_object_ref (obj->pool);
5096 GstStructure *config;
5098 /* we had a pool, check caps */
5099 config = gst_buffer_pool_get_config (pool);
5100 gst_buffer_pool_config_get_params (config, &pcaps, NULL, NULL, NULL);
5102 GST_DEBUG_OBJECT (obj->dbg_obj,
5103 "we had a pool with caps %" GST_PTR_FORMAT, pcaps);
5104 if (!gst_caps_is_equal (caps, pcaps)) {
5105 gst_structure_free (config);
5106 gst_object_unref (pool);
5107 goto different_caps;
5109 gst_structure_free (config);
5111 gst_v4l2_get_driver_min_buffers (obj);
5113 min = MAX (obj->min_buffers, GST_V4L2_MIN_BUFFERS (obj));
5115 gst_query_add_allocation_pool (query, pool, size, min, max);
5117 /* we also support various metadata */
5118 gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
5121 gst_object_unref (pool);
5128 GST_DEBUG_OBJECT (obj->dbg_obj, "no caps specified");
5133 /* different caps, we can't use this pool */
5134 GST_DEBUG_OBJECT (obj->dbg_obj, "pool has different caps");
5140 gst_v4l2_object_try_import (GstV4l2Object * obj, GstBuffer * buffer)
5142 GstVideoMeta *vmeta;
5143 guint n_mem = gst_buffer_n_memory (buffer);
5145 /* only import if requested */
5146 switch (obj->mode) {
5147 case GST_V4L2_IO_USERPTR:
5148 case GST_V4L2_IO_DMABUF_IMPORT:
5151 GST_DEBUG_OBJECT (obj->dbg_obj,
5152 "The io-mode does not enable importation");
5156 vmeta = gst_buffer_get_video_meta (buffer);
5157 if (!vmeta && obj->need_video_meta) {
5158 GST_DEBUG_OBJECT (obj->dbg_obj, "Downstream buffer uses standard "
5159 "stride/offset while the driver does not.");
5163 /* we need matching strides/offsets and size */
5165 guint plane_height[GST_VIDEO_MAX_PLANES] = { 0, };
5167 gst_video_meta_get_plane_height (vmeta, plane_height);
5169 if (!gst_v4l2_object_match_buffer_layout (obj, vmeta->n_planes,
5170 vmeta->offset, vmeta->stride, gst_buffer_get_size (buffer),
5175 /* we can always import single memory buffer, but otherwise we need the same
5176 * amount of memory object. */
5177 if (n_mem != 1 && n_mem != obj->n_v4l2_planes) {
5178 GST_DEBUG_OBJECT (obj->dbg_obj, "Can only import %i memory, "
5179 "buffers contains %u memory", obj->n_v4l2_planes, n_mem);
5183 /* For DMABuf importation we need DMABuf of course */
5184 if (obj->mode == GST_V4L2_IO_DMABUF_IMPORT) {
5187 for (i = 0; i < n_mem; i++) {
5188 GstMemory *mem = gst_buffer_peek_memory (buffer, i);
5190 if (!gst_is_dmabuf_memory (mem)) {
5191 GST_DEBUG_OBJECT (obj->dbg_obj, "Cannot import non-DMABuf memory.");
5197 /* for the remaining, only the kernel driver can tell */