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_ARGB32, TRUE, GST_V4L2_RAW},
98 {V4L2_PIX_FMT_XRGB32, TRUE, GST_V4L2_RAW},
100 /* Deprecated Packed RGB Image Formats (alpha ambiguity) */
101 {V4L2_PIX_FMT_RGB444, TRUE, GST_V4L2_RAW},
102 {V4L2_PIX_FMT_RGB555, TRUE, GST_V4L2_RAW},
103 {V4L2_PIX_FMT_RGB555X, TRUE, GST_V4L2_RAW},
104 {V4L2_PIX_FMT_BGR32, TRUE, GST_V4L2_RAW},
105 {V4L2_PIX_FMT_RGB32, TRUE, GST_V4L2_RAW},
108 {V4L2_PIX_FMT_GREY, TRUE, GST_V4L2_RAW},
109 {V4L2_PIX_FMT_Y4, TRUE, GST_V4L2_RAW},
110 {V4L2_PIX_FMT_Y6, TRUE, GST_V4L2_RAW},
111 {V4L2_PIX_FMT_Y10, TRUE, GST_V4L2_RAW},
112 {V4L2_PIX_FMT_Y12, TRUE, GST_V4L2_RAW},
113 {V4L2_PIX_FMT_Y16, TRUE, GST_V4L2_RAW},
114 {V4L2_PIX_FMT_Y16_BE, TRUE, GST_V4L2_RAW},
115 {V4L2_PIX_FMT_Y10BPACK, TRUE, GST_V4L2_RAW},
116 {V4L2_PIX_FMT_INVZ, TRUE, GST_V4L2_RAW},
118 /* Palette formats */
119 {V4L2_PIX_FMT_PAL8, TRUE, GST_V4L2_RAW},
121 /* Chrominance formats */
122 {V4L2_PIX_FMT_UV8, TRUE, GST_V4L2_RAW},
124 /* Luminance+Chrominance formats */
125 {V4L2_PIX_FMT_YVU410, TRUE, GST_V4L2_RAW},
126 {V4L2_PIX_FMT_YVU420, TRUE, GST_V4L2_RAW},
127 {V4L2_PIX_FMT_YVU420M, TRUE, GST_V4L2_RAW},
128 {V4L2_PIX_FMT_YUYV, TRUE, GST_V4L2_RAW},
129 {V4L2_PIX_FMT_YYUV, TRUE, GST_V4L2_RAW},
130 {V4L2_PIX_FMT_YVYU, TRUE, GST_V4L2_RAW},
131 {V4L2_PIX_FMT_UYVY, TRUE, GST_V4L2_RAW},
132 {V4L2_PIX_FMT_VYUY, TRUE, GST_V4L2_RAW},
133 {V4L2_PIX_FMT_YUV422P, TRUE, GST_V4L2_RAW},
134 {V4L2_PIX_FMT_YUV411P, TRUE, GST_V4L2_RAW},
135 {V4L2_PIX_FMT_Y41P, TRUE, GST_V4L2_RAW},
136 {V4L2_PIX_FMT_YUV444, TRUE, GST_V4L2_RAW},
137 {V4L2_PIX_FMT_YUV555, TRUE, GST_V4L2_RAW},
138 {V4L2_PIX_FMT_YUV565, TRUE, GST_V4L2_RAW},
139 {V4L2_PIX_FMT_YUV32, TRUE, GST_V4L2_RAW},
140 {V4L2_PIX_FMT_YUV410, TRUE, GST_V4L2_RAW},
141 {V4L2_PIX_FMT_YUV420, TRUE, GST_V4L2_RAW},
142 {V4L2_PIX_FMT_YUV420M, TRUE, GST_V4L2_RAW},
143 {V4L2_PIX_FMT_HI240, TRUE, GST_V4L2_RAW},
144 {V4L2_PIX_FMT_HM12, TRUE, GST_V4L2_RAW},
145 {V4L2_PIX_FMT_M420, TRUE, GST_V4L2_RAW},
147 /* two planes -- one Y, one Cr + Cb interleaved */
148 {V4L2_PIX_FMT_NV12, TRUE, GST_V4L2_RAW},
149 {V4L2_PIX_FMT_NV12M, TRUE, GST_V4L2_RAW},
150 {V4L2_PIX_FMT_NV12MT, TRUE, GST_V4L2_RAW},
151 {V4L2_PIX_FMT_NV12MT_16X16, TRUE, GST_V4L2_RAW},
152 {V4L2_PIX_FMT_NV21, TRUE, GST_V4L2_RAW},
153 {V4L2_PIX_FMT_NV21M, TRUE, GST_V4L2_RAW},
154 {V4L2_PIX_FMT_NV16, TRUE, GST_V4L2_RAW},
155 {V4L2_PIX_FMT_NV16M, TRUE, GST_V4L2_RAW},
156 {V4L2_PIX_FMT_NV61, TRUE, GST_V4L2_RAW},
157 {V4L2_PIX_FMT_NV61M, TRUE, GST_V4L2_RAW},
158 {V4L2_PIX_FMT_NV24, TRUE, GST_V4L2_RAW},
159 {V4L2_PIX_FMT_NV42, TRUE, GST_V4L2_RAW},
161 /* Bayer formats - see http://www.siliconimaging.com/RGB%20Bayer.htm */
162 {V4L2_PIX_FMT_SBGGR8, TRUE, GST_V4L2_RAW},
163 {V4L2_PIX_FMT_SGBRG8, TRUE, GST_V4L2_RAW},
164 {V4L2_PIX_FMT_SGRBG8, TRUE, GST_V4L2_RAW},
165 {V4L2_PIX_FMT_SRGGB8, TRUE, GST_V4L2_RAW},
167 /* compressed formats */
168 {V4L2_PIX_FMT_MJPEG, FALSE, GST_V4L2_CODEC},
169 {V4L2_PIX_FMT_JPEG, FALSE, GST_V4L2_CODEC},
170 {V4L2_PIX_FMT_PJPG, FALSE, GST_V4L2_CODEC},
171 {V4L2_PIX_FMT_DV, FALSE, GST_V4L2_TRANSPORT},
172 {V4L2_PIX_FMT_MPEG, FALSE, GST_V4L2_TRANSPORT},
173 {V4L2_PIX_FMT_FWHT, FALSE, GST_V4L2_CODEC},
174 {V4L2_PIX_FMT_H264, FALSE, GST_V4L2_CODEC},
175 {V4L2_PIX_FMT_H264_NO_SC, FALSE, GST_V4L2_CODEC},
176 {V4L2_PIX_FMT_H264_MVC, FALSE, GST_V4L2_CODEC},
177 {V4L2_PIX_FMT_HEVC, FALSE, GST_V4L2_CODEC},
178 {V4L2_PIX_FMT_H263, FALSE, GST_V4L2_CODEC},
179 {V4L2_PIX_FMT_MPEG1, FALSE, GST_V4L2_CODEC},
180 {V4L2_PIX_FMT_MPEG2, FALSE, GST_V4L2_CODEC},
181 {V4L2_PIX_FMT_MPEG4, FALSE, GST_V4L2_CODEC},
182 {V4L2_PIX_FMT_XVID, FALSE, GST_V4L2_CODEC},
183 {V4L2_PIX_FMT_VC1_ANNEX_G, FALSE, GST_V4L2_CODEC},
184 {V4L2_PIX_FMT_VC1_ANNEX_L, FALSE, GST_V4L2_CODEC},
185 {V4L2_PIX_FMT_VP8, FALSE, GST_V4L2_CODEC | GST_V4L2_NO_PARSE},
186 {V4L2_PIX_FMT_VP9, FALSE, GST_V4L2_CODEC | GST_V4L2_NO_PARSE},
188 /* Vendor-specific formats */
189 {V4L2_PIX_FMT_WNVA, TRUE, GST_V4L2_CODEC},
190 {V4L2_PIX_FMT_SN9C10X, TRUE, GST_V4L2_CODEC},
191 {V4L2_PIX_FMT_PWC1, TRUE, GST_V4L2_CODEC},
192 {V4L2_PIX_FMT_PWC2, TRUE, GST_V4L2_CODEC},
195 #define GST_V4L2_FORMAT_COUNT (G_N_ELEMENTS (gst_v4l2_formats))
197 static GSList *gst_v4l2_object_get_format_list (GstV4l2Object * v4l2object);
200 #define GST_TYPE_V4L2_DEVICE_FLAGS (gst_v4l2_device_get_type ())
202 gst_v4l2_device_get_type (void)
204 static GType v4l2_device_type = 0;
206 if (v4l2_device_type == 0) {
207 static const GFlagsValue values[] = {
208 {V4L2_CAP_VIDEO_CAPTURE, "Device supports video capture", "capture"},
209 {V4L2_CAP_VIDEO_OUTPUT, "Device supports video playback", "output"},
210 {V4L2_CAP_VIDEO_OVERLAY, "Device supports video overlay", "overlay"},
212 {V4L2_CAP_VBI_CAPTURE, "Device supports the VBI capture", "vbi-capture"},
213 {V4L2_CAP_VBI_OUTPUT, "Device supports the VBI output", "vbi-output"},
215 {V4L2_CAP_TUNER, "Device has a tuner or modulator", "tuner"},
216 {V4L2_CAP_AUDIO, "Device has audio inputs or outputs", "audio"},
222 g_flags_register_static ("GstV4l2DeviceTypeFlags", values);
225 return v4l2_device_type;
228 #define GST_TYPE_V4L2_TV_NORM (gst_v4l2_tv_norm_get_type ())
230 gst_v4l2_tv_norm_get_type (void)
232 static GType v4l2_tv_norm = 0;
235 static const GEnumValue tv_norms[] = {
238 {V4L2_STD_NTSC, "NTSC", "NTSC"},
239 {V4L2_STD_NTSC_M, "NTSC-M", "NTSC-M"},
240 {V4L2_STD_NTSC_M_JP, "NTSC-M-JP", "NTSC-M-JP"},
241 {V4L2_STD_NTSC_M_KR, "NTSC-M-KR", "NTSC-M-KR"},
242 {V4L2_STD_NTSC_443, "NTSC-443", "NTSC-443"},
244 {V4L2_STD_PAL, "PAL", "PAL"},
245 {V4L2_STD_PAL_BG, "PAL-BG", "PAL-BG"},
246 {V4L2_STD_PAL_B, "PAL-B", "PAL-B"},
247 {V4L2_STD_PAL_B1, "PAL-B1", "PAL-B1"},
248 {V4L2_STD_PAL_G, "PAL-G", "PAL-G"},
249 {V4L2_STD_PAL_H, "PAL-H", "PAL-H"},
250 {V4L2_STD_PAL_I, "PAL-I", "PAL-I"},
251 {V4L2_STD_PAL_DK, "PAL-DK", "PAL-DK"},
252 {V4L2_STD_PAL_D, "PAL-D", "PAL-D"},
253 {V4L2_STD_PAL_D1, "PAL-D1", "PAL-D1"},
254 {V4L2_STD_PAL_K, "PAL-K", "PAL-K"},
255 {V4L2_STD_PAL_M, "PAL-M", "PAL-M"},
256 {V4L2_STD_PAL_N, "PAL-N", "PAL-N"},
257 {V4L2_STD_PAL_Nc, "PAL-Nc", "PAL-Nc"},
258 {V4L2_STD_PAL_60, "PAL-60", "PAL-60"},
260 {V4L2_STD_SECAM, "SECAM", "SECAM"},
261 {V4L2_STD_SECAM_B, "SECAM-B", "SECAM-B"},
262 {V4L2_STD_SECAM_G, "SECAM-G", "SECAM-G"},
263 {V4L2_STD_SECAM_H, "SECAM-H", "SECAM-H"},
264 {V4L2_STD_SECAM_DK, "SECAM-DK", "SECAM-DK"},
265 {V4L2_STD_SECAM_D, "SECAM-D", "SECAM-D"},
266 {V4L2_STD_SECAM_K, "SECAM-K", "SECAM-K"},
267 {V4L2_STD_SECAM_K1, "SECAM-K1", "SECAM-K1"},
268 {V4L2_STD_SECAM_L, "SECAM-L", "SECAM-L"},
269 {V4L2_STD_SECAM_LC, "SECAM-Lc", "SECAM-Lc"},
274 v4l2_tv_norm = g_enum_register_static ("V4L2_TV_norms", tv_norms);
281 gst_v4l2_io_mode_get_type (void)
283 static GType v4l2_io_mode = 0;
286 static const GEnumValue io_modes[] = {
287 {GST_V4L2_IO_AUTO, "GST_V4L2_IO_AUTO", "auto"},
288 {GST_V4L2_IO_RW, "GST_V4L2_IO_RW", "rw"},
289 {GST_V4L2_IO_MMAP, "GST_V4L2_IO_MMAP", "mmap"},
290 {GST_V4L2_IO_USERPTR, "GST_V4L2_IO_USERPTR", "userptr"},
291 {GST_V4L2_IO_DMABUF, "GST_V4L2_IO_DMABUF", "dmabuf"},
292 {GST_V4L2_IO_DMABUF_IMPORT, "GST_V4L2_IO_DMABUF_IMPORT",
297 v4l2_io_mode = g_enum_register_static ("GstV4l2IOMode", io_modes);
303 gst_v4l2_object_install_properties_helper (GObjectClass * gobject_class,
304 const char *default_device)
306 g_object_class_install_property (gobject_class, PROP_DEVICE,
307 g_param_spec_string ("device", "Device", "Device location",
308 default_device, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
309 g_object_class_install_property (gobject_class, PROP_DEVICE_NAME,
310 g_param_spec_string ("device-name", "Device name",
311 "Name of the device", DEFAULT_PROP_DEVICE_NAME,
312 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
313 g_object_class_install_property (gobject_class, PROP_DEVICE_FD,
314 g_param_spec_int ("device-fd", "File descriptor",
315 "File descriptor of the device", -1, G_MAXINT, DEFAULT_PROP_DEVICE_FD,
316 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
317 g_object_class_install_property (gobject_class, PROP_FLAGS,
318 g_param_spec_flags ("flags", "Flags", "Device type flags",
319 GST_TYPE_V4L2_DEVICE_FLAGS, DEFAULT_PROP_FLAGS,
320 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
323 * GstV4l2Src:brightness:
325 * Picture brightness, or more precisely, the black level
327 g_object_class_install_property (gobject_class, PROP_BRIGHTNESS,
328 g_param_spec_int ("brightness", "Brightness",
329 "Picture brightness, or more precisely, the black level", G_MININT,
331 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
333 * GstV4l2Src:contrast:
335 * Picture contrast or luma gain
337 g_object_class_install_property (gobject_class, PROP_CONTRAST,
338 g_param_spec_int ("contrast", "Contrast",
339 "Picture contrast or luma gain", G_MININT,
341 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
343 * GstV4l2Src:saturation:
345 * Picture color saturation or chroma gain
347 g_object_class_install_property (gobject_class, PROP_SATURATION,
348 g_param_spec_int ("saturation", "Saturation",
349 "Picture color saturation or chroma gain", G_MININT,
351 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
355 * Hue or color balance
357 g_object_class_install_property (gobject_class, PROP_HUE,
358 g_param_spec_int ("hue", "Hue",
359 "Hue or color balance", G_MININT,
361 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
368 g_object_class_install_property (gobject_class, PROP_TV_NORM,
369 g_param_spec_enum ("norm", "TV norm",
371 GST_TYPE_V4L2_TV_NORM, DEFAULT_PROP_TV_NORM,
372 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
375 * GstV4l2Src:io-mode:
379 g_object_class_install_property (gobject_class, PROP_IO_MODE,
380 g_param_spec_enum ("io-mode", "IO mode",
382 GST_TYPE_V4L2_IO_MODE, DEFAULT_PROP_IO_MODE,
383 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
386 * GstV4l2Src:extra-controls:
388 * Additional v4l2 controls for the device. The controls are identified
389 * by the control name (lowercase with '_' for any non-alphanumeric
394 g_object_class_install_property (gobject_class, PROP_EXTRA_CONTROLS,
395 g_param_spec_boxed ("extra-controls", "Extra Controls",
396 "Extra v4l2 controls (CIDs) for the device",
397 GST_TYPE_STRUCTURE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
400 * GstV4l2Src:pixel-aspect-ratio:
402 * The pixel aspect ratio of the device. This overwrites the pixel aspect
403 * ratio queried from the device.
407 g_object_class_install_property (gobject_class, PROP_PIXEL_ASPECT_RATIO,
408 g_param_spec_string ("pixel-aspect-ratio", "Pixel Aspect Ratio",
409 "Overwrite the pixel aspect ratio of the device", "1/1",
410 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
413 * GstV4l2Src:force-aspect-ratio:
415 * When enabled, the pixel aspect ratio queried from the device or set
416 * with the pixel-aspect-ratio property will be enforced.
420 g_object_class_install_property (gobject_class, PROP_FORCE_ASPECT_RATIO,
421 g_param_spec_boolean ("force-aspect-ratio", "Force aspect ratio",
422 "When enabled, the pixel aspect ratio will be enforced", TRUE,
423 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
428 gst_v4l2_object_install_m2m_properties_helper (GObjectClass * gobject_class)
430 g_object_class_install_property (gobject_class, PROP_DEVICE,
431 g_param_spec_string ("device", "Device", "Device location",
432 NULL, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
434 g_object_class_install_property (gobject_class, PROP_DEVICE_NAME,
435 g_param_spec_string ("device-name", "Device name",
436 "Name of the device", DEFAULT_PROP_DEVICE_NAME,
437 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
439 g_object_class_install_property (gobject_class, PROP_DEVICE_FD,
440 g_param_spec_int ("device-fd", "File descriptor",
441 "File descriptor of the device", -1, G_MAXINT, DEFAULT_PROP_DEVICE_FD,
442 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
444 g_object_class_install_property (gobject_class, PROP_OUTPUT_IO_MODE,
445 g_param_spec_enum ("output-io-mode", "Output IO mode",
446 "Output side I/O mode (matches sink pad)",
447 GST_TYPE_V4L2_IO_MODE, DEFAULT_PROP_IO_MODE,
448 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
450 g_object_class_install_property (gobject_class, PROP_CAPTURE_IO_MODE,
451 g_param_spec_enum ("capture-io-mode", "Capture IO mode",
452 "Capture I/O mode (matches src 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_EXTRA_CONTROLS,
457 g_param_spec_boxed ("extra-controls", "Extra Controls",
458 "Extra v4l2 controls (CIDs) for the device",
459 GST_TYPE_STRUCTURE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
462 /* Support for 32bit off_t, this wrapper is casting off_t to gint64 */
467 v4l2_mmap_wrapper (gpointer start, gsize length, gint prot, gint flags, gint fd,
470 return v4l2_mmap (start, length, prot, flags, fd, (gint64) offset);
473 #define v4l2_mmap v4l2_mmap_wrapper
475 #endif /* SIZEOF_OFF_T < 8 */
476 #endif /* HAVE_LIBV4L2 */
479 gst_v4l2_object_new (GstElement * element,
480 GstObject * debug_object,
481 enum v4l2_buf_type type,
482 const char *default_device,
483 GstV4l2GetInOutFunction get_in_out_func,
484 GstV4l2SetInOutFunction set_in_out_func,
485 GstV4l2UpdateFpsFunction update_fps_func)
487 GstV4l2Object *v4l2object;
490 * some default values
492 v4l2object = g_new0 (GstV4l2Object, 1);
494 v4l2object->type = type;
495 v4l2object->formats = NULL;
497 v4l2object->element = element;
498 v4l2object->dbg_obj = debug_object;
499 v4l2object->get_in_out_func = get_in_out_func;
500 v4l2object->set_in_out_func = set_in_out_func;
501 v4l2object->update_fps_func = update_fps_func;
503 v4l2object->video_fd = -1;
504 v4l2object->active = FALSE;
505 v4l2object->videodev = g_strdup (default_device);
507 v4l2object->norms = NULL;
508 v4l2object->channels = NULL;
509 v4l2object->colors = NULL;
511 v4l2object->keep_aspect = TRUE;
513 v4l2object->n_v4l2_planes = 0;
515 v4l2object->no_initial_format = FALSE;
517 /* We now disable libv4l2 by default, but have an env to enable it. */
519 #ifdef TIZEN_FEATURE_USE_LIBV4L2
521 #else /* TIZEN_FEATURE_USE_LIBV4L2 */
522 if (g_getenv ("GST_V4L2_USE_LIBV4L2")) {
523 #endif /* TIZEN_FEATURE_USE_LIBV4L2 */
524 v4l2object->fd_open = v4l2_fd_open;
525 v4l2object->close = v4l2_close;
526 v4l2object->dup = v4l2_dup;
527 v4l2object->ioctl = v4l2_ioctl;
528 v4l2object->read = v4l2_read;
529 v4l2object->mmap = v4l2_mmap;
530 v4l2object->munmap = v4l2_munmap;
534 v4l2object->fd_open = NULL;
535 v4l2object->close = close;
536 v4l2object->dup = dup;
537 v4l2object->ioctl = ioctl;
538 v4l2object->read = read;
539 v4l2object->mmap = mmap;
540 v4l2object->munmap = munmap;
546 static gboolean gst_v4l2_object_clear_format_list (GstV4l2Object * v4l2object);
550 gst_v4l2_object_destroy (GstV4l2Object * v4l2object)
552 g_return_if_fail (v4l2object != NULL);
554 g_free (v4l2object->videodev);
556 g_free (v4l2object->channel);
558 if (v4l2object->formats) {
559 gst_v4l2_object_clear_format_list (v4l2object);
562 if (v4l2object->probed_caps) {
563 gst_caps_unref (v4l2object->probed_caps);
566 if (v4l2object->extra_controls) {
567 gst_structure_free (v4l2object->extra_controls);
575 gst_v4l2_object_clear_format_list (GstV4l2Object * v4l2object)
577 g_slist_foreach (v4l2object->formats, (GFunc) g_free, NULL);
578 g_slist_free (v4l2object->formats);
579 v4l2object->formats = NULL;
585 gst_v4l2_object_prop_to_cid (guint prop_id)
590 case PROP_BRIGHTNESS:
591 cid = V4L2_CID_BRIGHTNESS;
594 cid = V4L2_CID_CONTRAST;
596 case PROP_SATURATION:
597 cid = V4L2_CID_SATURATION;
603 GST_WARNING ("unmapped property id: %d", prop_id);
610 gst_v4l2_object_set_property_helper (GstV4l2Object * v4l2object,
611 guint prop_id, const GValue * value, GParamSpec * pspec)
615 g_free (v4l2object->videodev);
616 v4l2object->videodev = g_value_dup_string (value);
618 case PROP_BRIGHTNESS:
620 case PROP_SATURATION:
623 gint cid = gst_v4l2_object_prop_to_cid (prop_id);
626 if (GST_V4L2_IS_OPEN (v4l2object)) {
627 gst_v4l2_set_attribute (v4l2object, cid, g_value_get_int (value));
634 v4l2object->tv_norm = g_value_get_enum (value);
638 if (GST_V4L2_IS_OPEN (v4l2object)) {
639 GstTuner *tuner = GST_TUNER (v4l2object->element);
640 GstTunerChannel *channel = gst_tuner_find_channel_by_name (tuner,
641 (gchar *) g_value_get_string (value));
644 /* like gst_tuner_set_channel (tuner, channel)
645 without g_object_notify */
646 gst_v4l2_tuner_set_channel (v4l2object, channel);
649 g_free (v4l2object->channel);
650 v4l2object->channel = g_value_dup_string (value);
654 if (GST_V4L2_IS_OPEN (v4l2object)) {
655 GstTuner *tuner = GST_TUNER (v4l2object->element);
656 GstTunerChannel *channel = gst_tuner_get_channel (tuner);
659 GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
661 gst_tuner_set_frequency (tuner, channel, g_value_get_ulong (value))
662 without g_object_notify */
663 gst_v4l2_tuner_set_frequency (v4l2object, channel,
664 g_value_get_ulong (value));
667 v4l2object->frequency = g_value_get_ulong (value);
673 v4l2object->req_mode = g_value_get_enum (value);
675 case PROP_CAPTURE_IO_MODE:
676 g_return_val_if_fail (!V4L2_TYPE_IS_OUTPUT (v4l2object->type), FALSE);
677 v4l2object->req_mode = g_value_get_enum (value);
679 case PROP_OUTPUT_IO_MODE:
680 g_return_val_if_fail (V4L2_TYPE_IS_OUTPUT (v4l2object->type), FALSE);
681 v4l2object->req_mode = g_value_get_enum (value);
683 case PROP_EXTRA_CONTROLS:{
684 const GstStructure *s = gst_value_get_structure (value);
686 if (v4l2object->extra_controls)
687 gst_structure_free (v4l2object->extra_controls);
689 v4l2object->extra_controls = s ? gst_structure_copy (s) : NULL;
690 if (GST_V4L2_IS_OPEN (v4l2object))
691 gst_v4l2_set_controls (v4l2object, v4l2object->extra_controls);
694 case PROP_PIXEL_ASPECT_RATIO:
695 if (v4l2object->par) {
696 g_value_unset (v4l2object->par);
697 g_free (v4l2object->par);
699 v4l2object->par = g_new0 (GValue, 1);
700 g_value_init (v4l2object->par, GST_TYPE_FRACTION);
701 if (!g_value_transform (value, v4l2object->par)) {
702 g_warning ("Could not transform string to aspect ratio");
703 gst_value_set_fraction (v4l2object->par, 1, 1);
706 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "set PAR to %d/%d",
707 gst_value_get_fraction_numerator (v4l2object->par),
708 gst_value_get_fraction_denominator (v4l2object->par));
710 case PROP_FORCE_ASPECT_RATIO:
711 v4l2object->keep_aspect = g_value_get_boolean (value);
722 gst_v4l2_object_get_property_helper (GstV4l2Object * v4l2object,
723 guint prop_id, GValue * value, GParamSpec * pspec)
727 g_value_set_string (value, v4l2object->videodev);
729 case PROP_DEVICE_NAME:
731 const guchar *name = NULL;
733 if (GST_V4L2_IS_OPEN (v4l2object))
734 name = v4l2object->vcap.card;
736 g_value_set_string (value, (gchar *) name);
741 if (GST_V4L2_IS_OPEN (v4l2object))
742 g_value_set_int (value, v4l2object->video_fd);
744 g_value_set_int (value, DEFAULT_PROP_DEVICE_FD);
751 if (GST_V4L2_IS_OPEN (v4l2object)) {
752 flags |= v4l2object->device_caps &
753 (V4L2_CAP_VIDEO_CAPTURE |
754 V4L2_CAP_VIDEO_OUTPUT |
755 V4L2_CAP_VIDEO_OVERLAY |
756 V4L2_CAP_VBI_CAPTURE |
757 V4L2_CAP_VBI_OUTPUT | V4L2_CAP_TUNER | V4L2_CAP_AUDIO);
759 if (v4l2object->device_caps & V4L2_CAP_VIDEO_CAPTURE_MPLANE)
760 flags |= V4L2_CAP_VIDEO_CAPTURE;
762 if (v4l2object->device_caps & V4L2_CAP_VIDEO_OUTPUT_MPLANE)
763 flags |= V4L2_CAP_VIDEO_OUTPUT;
765 g_value_set_flags (value, flags);
768 case PROP_BRIGHTNESS:
770 case PROP_SATURATION:
773 gint cid = gst_v4l2_object_prop_to_cid (prop_id);
776 if (GST_V4L2_IS_OPEN (v4l2object)) {
778 if (gst_v4l2_get_attribute (v4l2object, cid, &v)) {
779 g_value_set_int (value, v);
787 g_value_set_enum (value, v4l2object->tv_norm);
790 g_value_set_enum (value, v4l2object->req_mode);
792 case PROP_CAPTURE_IO_MODE:
793 g_return_val_if_fail (!V4L2_TYPE_IS_OUTPUT (v4l2object->type), FALSE);
794 g_value_set_enum (value, v4l2object->req_mode);
796 case PROP_OUTPUT_IO_MODE:
797 g_return_val_if_fail (V4L2_TYPE_IS_OUTPUT (v4l2object->type), FALSE);
798 g_value_set_enum (value, v4l2object->req_mode);
800 case PROP_EXTRA_CONTROLS:
801 gst_value_set_structure (value, v4l2object->extra_controls);
803 case PROP_PIXEL_ASPECT_RATIO:
805 g_value_transform (v4l2object->par, value);
807 case PROP_FORCE_ASPECT_RATIO:
808 g_value_set_boolean (value, v4l2object->keep_aspect);
818 gst_v4l2_get_driver_min_buffers (GstV4l2Object * v4l2object)
820 struct v4l2_control control = { 0, };
822 g_return_if_fail (GST_V4L2_IS_OPEN (v4l2object));
824 if (V4L2_TYPE_IS_OUTPUT (v4l2object->type))
825 control.id = V4L2_CID_MIN_BUFFERS_FOR_OUTPUT;
827 control.id = V4L2_CID_MIN_BUFFERS_FOR_CAPTURE;
829 if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_G_CTRL, &control) == 0) {
830 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
831 "driver requires a minimum of %d buffers", control.value);
832 v4l2object->min_buffers = control.value;
834 v4l2object->min_buffers = 0;
839 gst_v4l2_set_defaults (GstV4l2Object * v4l2object)
841 GstTunerNorm *norm = NULL;
842 GstTunerChannel *channel = NULL;
845 if (!GST_IS_TUNER (v4l2object->element))
848 tuner = GST_TUNER (v4l2object->element);
850 if (v4l2object->tv_norm)
851 norm = gst_v4l2_tuner_get_norm_by_std_id (v4l2object, v4l2object->tv_norm);
852 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "tv_norm=0x%" G_GINT64_MODIFIER "x, "
853 "norm=%p", (guint64) v4l2object->tv_norm, norm);
855 gst_tuner_set_norm (tuner, norm);
858 GST_TUNER_NORM (gst_tuner_get_norm (GST_TUNER (v4l2object->element)));
860 v4l2object->tv_norm =
861 gst_v4l2_tuner_get_std_id_by_norm (v4l2object, norm);
862 gst_tuner_norm_changed (tuner, norm);
866 if (v4l2object->channel)
867 channel = gst_tuner_find_channel_by_name (tuner, v4l2object->channel);
869 gst_tuner_set_channel (tuner, channel);
872 GST_TUNER_CHANNEL (gst_tuner_get_channel (GST_TUNER
873 (v4l2object->element)));
875 g_free (v4l2object->channel);
876 v4l2object->channel = g_strdup (channel->label);
877 gst_tuner_channel_changed (tuner, channel);
882 && GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
883 if (v4l2object->frequency != 0) {
884 gst_tuner_set_frequency (tuner, channel, v4l2object->frequency);
886 v4l2object->frequency = gst_tuner_get_frequency (tuner, channel);
887 if (v4l2object->frequency == 0) {
889 gst_tuner_set_frequency (tuner, channel, 1000);
897 gst_v4l2_object_open (GstV4l2Object * v4l2object)
899 if (gst_v4l2_open (v4l2object))
900 gst_v4l2_set_defaults (v4l2object);
908 gst_v4l2_object_open_shared (GstV4l2Object * v4l2object, GstV4l2Object * other)
912 ret = gst_v4l2_dup (v4l2object, other);
918 gst_v4l2_object_close (GstV4l2Object * v4l2object)
920 if (!gst_v4l2_close (v4l2object))
923 gst_caps_replace (&v4l2object->probed_caps, NULL);
925 /* reset our copy of the device caps */
926 v4l2object->device_caps = 0;
928 if (v4l2object->formats) {
929 gst_v4l2_object_clear_format_list (v4l2object);
932 if (v4l2object->par) {
933 g_value_unset (v4l2object->par);
934 g_free (v4l2object->par);
935 v4l2object->par = NULL;
938 if (v4l2object->channel) {
939 g_free (v4l2object->channel);
940 v4l2object->channel = NULL;
946 static struct v4l2_fmtdesc *
947 gst_v4l2_object_get_format_from_fourcc (GstV4l2Object * v4l2object,
950 struct v4l2_fmtdesc *fmt;
956 walk = gst_v4l2_object_get_format_list (v4l2object);
958 fmt = (struct v4l2_fmtdesc *) walk->data;
959 if (fmt->pixelformat == fourcc)
961 /* special case for jpeg */
962 if (fmt->pixelformat == V4L2_PIX_FMT_MJPEG ||
963 fmt->pixelformat == V4L2_PIX_FMT_JPEG ||
964 fmt->pixelformat == V4L2_PIX_FMT_PJPG) {
965 if (fourcc == V4L2_PIX_FMT_JPEG || fourcc == V4L2_PIX_FMT_MJPEG ||
966 fourcc == V4L2_PIX_FMT_PJPG) {
970 walk = g_slist_next (walk);
978 /* complete made up ranking, the values themselves are meaningless */
979 /* These ranks MUST be X such that X<<15 fits on a signed int - see
980 the comment at the end of gst_v4l2_object_format_get_rank. */
981 #define YUV_BASE_RANK 1000
982 #define JPEG_BASE_RANK 500
983 #define DV_BASE_RANK 200
984 #define RGB_BASE_RANK 100
985 #define YUV_ODD_BASE_RANK 50
986 #define RGB_ODD_BASE_RANK 25
987 #define BAYER_BASE_RANK 15
988 #define S910_BASE_RANK 10
989 #define GREY_BASE_RANK 5
990 #define PWC_BASE_RANK 1
993 gst_v4l2_object_format_get_rank (const struct v4l2_fmtdesc *fmt)
995 guint32 fourcc = fmt->pixelformat;
996 gboolean emulated = ((fmt->flags & V4L2_FMT_FLAG_EMULATED) != 0);
1000 case V4L2_PIX_FMT_MJPEG:
1001 case V4L2_PIX_FMT_PJPG:
1002 rank = JPEG_BASE_RANK;
1004 case V4L2_PIX_FMT_JPEG:
1005 rank = JPEG_BASE_RANK + 1;
1007 case V4L2_PIX_FMT_MPEG: /* MPEG */
1008 rank = JPEG_BASE_RANK + 2;
1011 case V4L2_PIX_FMT_RGB332:
1012 case V4L2_PIX_FMT_ARGB555:
1013 case V4L2_PIX_FMT_XRGB555:
1014 case V4L2_PIX_FMT_RGB555:
1015 case V4L2_PIX_FMT_ARGB555X:
1016 case V4L2_PIX_FMT_XRGB555X:
1017 case V4L2_PIX_FMT_RGB555X:
1018 case V4L2_PIX_FMT_BGR666:
1019 case V4L2_PIX_FMT_RGB565:
1020 case V4L2_PIX_FMT_RGB565X:
1021 case V4L2_PIX_FMT_RGB444:
1022 case V4L2_PIX_FMT_Y4:
1023 case V4L2_PIX_FMT_Y6:
1024 case V4L2_PIX_FMT_Y10:
1025 case V4L2_PIX_FMT_Y12:
1026 case V4L2_PIX_FMT_Y10BPACK:
1027 case V4L2_PIX_FMT_YUV555:
1028 case V4L2_PIX_FMT_YUV565:
1029 case V4L2_PIX_FMT_YUV32:
1030 case V4L2_PIX_FMT_NV12MT_16X16:
1031 case V4L2_PIX_FMT_NV42:
1032 case V4L2_PIX_FMT_H264_MVC:
1033 rank = RGB_ODD_BASE_RANK;
1036 case V4L2_PIX_FMT_RGB24:
1037 case V4L2_PIX_FMT_BGR24:
1038 rank = RGB_BASE_RANK - 1;
1041 case V4L2_PIX_FMT_RGB32:
1042 case V4L2_PIX_FMT_BGR32:
1043 case V4L2_PIX_FMT_ABGR32:
1044 case V4L2_PIX_FMT_XBGR32:
1045 case V4L2_PIX_FMT_ARGB32:
1046 case V4L2_PIX_FMT_XRGB32:
1047 rank = RGB_BASE_RANK;
1050 case V4L2_PIX_FMT_GREY: /* 8 Greyscale */
1051 case V4L2_PIX_FMT_INVZ:
1052 rank = GREY_BASE_RANK;
1055 case V4L2_PIX_FMT_NV12: /* 12 Y/CbCr 4:2:0 */
1056 case V4L2_PIX_FMT_NV12M: /* Same as NV12 */
1057 case V4L2_PIX_FMT_NV12MT: /* NV12 64x32 tile */
1058 case V4L2_PIX_FMT_NV21: /* 12 Y/CrCb 4:2:0 */
1059 case V4L2_PIX_FMT_NV21M: /* Same as NV21 */
1060 case V4L2_PIX_FMT_YYUV: /* 16 YUV 4:2:2 */
1061 case V4L2_PIX_FMT_HI240: /* 8 8-bit color */
1062 case V4L2_PIX_FMT_NV16: /* 16 Y/CbCr 4:2:2 */
1063 case V4L2_PIX_FMT_NV16M: /* Same as NV16 */
1064 case V4L2_PIX_FMT_NV61: /* 16 Y/CrCb 4:2:2 */
1065 case V4L2_PIX_FMT_NV61M: /* Same as NV61 */
1066 case V4L2_PIX_FMT_NV24: /* 24 Y/CrCb 4:4:4 */
1067 rank = YUV_ODD_BASE_RANK;
1070 case V4L2_PIX_FMT_YVU410: /* YVU9, 9 bits per pixel */
1071 rank = YUV_BASE_RANK + 3;
1073 case V4L2_PIX_FMT_YUV410: /* YUV9, 9 bits per pixel */
1074 rank = YUV_BASE_RANK + 2;
1076 case V4L2_PIX_FMT_YUV420: /* I420, 12 bits per pixel */
1077 case V4L2_PIX_FMT_YUV420M:
1078 rank = YUV_BASE_RANK + 7;
1080 case V4L2_PIX_FMT_YUYV: /* YUY2, 16 bits per pixel */
1081 rank = YUV_BASE_RANK + 10;
1083 case V4L2_PIX_FMT_YVU420: /* YV12, 12 bits per pixel */
1084 rank = YUV_BASE_RANK + 6;
1086 case V4L2_PIX_FMT_UYVY: /* UYVY, 16 bits per pixel */
1087 rank = YUV_BASE_RANK + 9;
1089 case V4L2_PIX_FMT_YUV444:
1090 rank = YUV_BASE_RANK + 6;
1092 case V4L2_PIX_FMT_Y41P: /* Y41P, 12 bits per pixel */
1093 rank = YUV_BASE_RANK + 5;
1095 case V4L2_PIX_FMT_YUV411P: /* Y41B, 12 bits per pixel */
1096 rank = YUV_BASE_RANK + 4;
1098 case V4L2_PIX_FMT_YUV422P: /* Y42B, 16 bits per pixel */
1099 rank = YUV_BASE_RANK + 8;
1102 case V4L2_PIX_FMT_DV:
1103 rank = DV_BASE_RANK;
1106 case V4L2_PIX_FMT_WNVA: /* Winnov hw compres */
1110 case V4L2_PIX_FMT_SBGGR8:
1111 case V4L2_PIX_FMT_SGBRG8:
1112 case V4L2_PIX_FMT_SGRBG8:
1113 case V4L2_PIX_FMT_SRGGB8:
1114 rank = BAYER_BASE_RANK;
1117 case V4L2_PIX_FMT_SN9C10X:
1118 rank = S910_BASE_RANK;
1121 case V4L2_PIX_FMT_PWC1:
1122 rank = PWC_BASE_RANK;
1124 case V4L2_PIX_FMT_PWC2:
1125 rank = PWC_BASE_RANK;
1133 /* All ranks are below 1<<15 so a shift by 15
1134 * will a) make all non-emulated formats larger
1135 * than emulated and b) will not overflow
1146 format_cmp_func (gconstpointer a, gconstpointer b)
1148 const struct v4l2_fmtdesc *fa = a;
1149 const struct v4l2_fmtdesc *fb = b;
1151 if (fa->pixelformat == fb->pixelformat)
1154 return gst_v4l2_object_format_get_rank (fb) -
1155 gst_v4l2_object_format_get_rank (fa);
1158 /******************************************************
1159 * gst_v4l2_object_fill_format_list():
1160 * create list of supported capture formats
1161 * return value: TRUE on success, FALSE on error
1162 ******************************************************/
1164 gst_v4l2_object_fill_format_list (GstV4l2Object * v4l2object,
1165 enum v4l2_buf_type type)
1168 struct v4l2_fmtdesc *format;
1170 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "getting src format enumerations");
1172 /* format enumeration */
1174 format = g_new0 (struct v4l2_fmtdesc, 1);
1177 format->type = type;
1179 if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_ENUM_FMT, format) < 0) {
1180 if (errno == EINVAL) {
1182 break; /* end of enumeration */
1188 GST_LOG_OBJECT (v4l2object->dbg_obj, "index: %u", format->index);
1189 GST_LOG_OBJECT (v4l2object->dbg_obj, "type: %d", format->type);
1190 GST_LOG_OBJECT (v4l2object->dbg_obj, "flags: %08x", format->flags);
1191 GST_LOG_OBJECT (v4l2object->dbg_obj, "description: '%s'",
1192 format->description);
1193 GST_LOG_OBJECT (v4l2object->dbg_obj, "pixelformat: %" GST_FOURCC_FORMAT,
1194 GST_FOURCC_ARGS (format->pixelformat));
1196 /* sort formats according to our preference; we do this, because caps
1197 * are probed in the order the formats are in the list, and the order of
1198 * formats in the final probed caps matters for things like fixation */
1199 v4l2object->formats = g_slist_insert_sorted (v4l2object->formats, format,
1200 (GCompareFunc) format_cmp_func);
1203 #ifndef GST_DISABLE_GST_DEBUG
1207 GST_INFO_OBJECT (v4l2object->dbg_obj, "got %d format(s):", n);
1208 for (l = v4l2object->formats; l != NULL; l = l->next) {
1211 GST_INFO_OBJECT (v4l2object->dbg_obj,
1212 " %" GST_FOURCC_FORMAT "%s", GST_FOURCC_ARGS (format->pixelformat),
1213 ((format->flags & V4L2_FMT_FLAG_EMULATED)) ? " (emulated)" : "");
1225 if (v4l2object->element)
1228 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
1229 (_("Failed to enumerate possible video formats device '%s' can work "
1230 "with"), v4l2object->videodev),
1231 ("Failed to get number %d in pixelformat enumeration for %s. (%d - %s)",
1232 n, v4l2object->videodev, errno, g_strerror (errno)));
1239 * Get the list of supported capture formats, a list of
1240 * <code>struct v4l2_fmtdesc</code>.
1243 gst_v4l2_object_get_format_list (GstV4l2Object * v4l2object)
1245 if (!v4l2object->formats) {
1247 /* check usual way */
1248 gst_v4l2_object_fill_format_list (v4l2object, v4l2object->type);
1250 /* if our driver supports multi-planar
1251 * and if formats are still empty then we can workaround driver bug
1252 * by also looking up formats as if our device was not supporting
1254 if (!v4l2object->formats) {
1255 switch (v4l2object->type) {
1256 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1257 gst_v4l2_object_fill_format_list (v4l2object,
1258 V4L2_BUF_TYPE_VIDEO_CAPTURE);
1261 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1262 gst_v4l2_object_fill_format_list (v4l2object,
1263 V4L2_BUF_TYPE_VIDEO_OUTPUT);
1271 return v4l2object->formats;
1274 static GstVideoFormat
1275 gst_v4l2_object_v4l2fourcc_to_video_format (guint32 fourcc)
1277 GstVideoFormat format;
1280 case V4L2_PIX_FMT_GREY: /* 8 Greyscale */
1281 format = GST_VIDEO_FORMAT_GRAY8;
1283 case V4L2_PIX_FMT_Y16:
1284 format = GST_VIDEO_FORMAT_GRAY16_LE;
1286 case V4L2_PIX_FMT_Y16_BE:
1287 format = GST_VIDEO_FORMAT_GRAY16_BE;
1289 case V4L2_PIX_FMT_XRGB555:
1290 case V4L2_PIX_FMT_RGB555:
1291 format = GST_VIDEO_FORMAT_RGB15;
1293 case V4L2_PIX_FMT_XRGB555X:
1294 case V4L2_PIX_FMT_RGB555X:
1295 format = GST_VIDEO_FORMAT_BGR15;
1297 case V4L2_PIX_FMT_RGB565:
1298 format = GST_VIDEO_FORMAT_RGB16;
1300 case V4L2_PIX_FMT_RGB24:
1301 format = GST_VIDEO_FORMAT_RGB;
1303 case V4L2_PIX_FMT_BGR24:
1304 format = GST_VIDEO_FORMAT_BGR;
1306 case V4L2_PIX_FMT_XRGB32:
1307 case V4L2_PIX_FMT_RGB32:
1308 format = GST_VIDEO_FORMAT_xRGB;
1310 case V4L2_PIX_FMT_XBGR32:
1311 case V4L2_PIX_FMT_BGR32:
1312 format = GST_VIDEO_FORMAT_BGRx;
1314 case V4L2_PIX_FMT_ABGR32:
1315 format = GST_VIDEO_FORMAT_BGRA;
1317 case V4L2_PIX_FMT_ARGB32:
1318 format = GST_VIDEO_FORMAT_ARGB;
1320 case V4L2_PIX_FMT_NV12:
1321 case V4L2_PIX_FMT_NV12M:
1322 format = GST_VIDEO_FORMAT_NV12;
1324 case V4L2_PIX_FMT_NV12MT:
1325 format = GST_VIDEO_FORMAT_NV12_64Z32;
1327 case V4L2_PIX_FMT_NV21:
1328 case V4L2_PIX_FMT_NV21M:
1329 format = GST_VIDEO_FORMAT_NV21;
1331 case V4L2_PIX_FMT_YVU410:
1332 format = GST_VIDEO_FORMAT_YVU9;
1334 case V4L2_PIX_FMT_YUV410:
1335 format = GST_VIDEO_FORMAT_YUV9;
1337 case V4L2_PIX_FMT_YUV420:
1338 case V4L2_PIX_FMT_YUV420M:
1339 format = GST_VIDEO_FORMAT_I420;
1341 case V4L2_PIX_FMT_YUYV:
1342 format = GST_VIDEO_FORMAT_YUY2;
1344 case V4L2_PIX_FMT_YVU420:
1345 format = GST_VIDEO_FORMAT_YV12;
1347 case V4L2_PIX_FMT_UYVY:
1348 format = GST_VIDEO_FORMAT_UYVY;
1350 case V4L2_PIX_FMT_YUV411P:
1351 format = GST_VIDEO_FORMAT_Y41B;
1353 case V4L2_PIX_FMT_YUV422P:
1354 format = GST_VIDEO_FORMAT_Y42B;
1356 case V4L2_PIX_FMT_YVYU:
1357 format = GST_VIDEO_FORMAT_YVYU;
1359 case V4L2_PIX_FMT_NV16:
1360 case V4L2_PIX_FMT_NV16M:
1361 format = GST_VIDEO_FORMAT_NV16;
1363 case V4L2_PIX_FMT_NV61:
1364 case V4L2_PIX_FMT_NV61M:
1365 format = GST_VIDEO_FORMAT_NV61;
1367 case V4L2_PIX_FMT_NV24:
1368 format = GST_VIDEO_FORMAT_NV24;
1370 case V4L2_PIX_FMT_INVZ:
1371 format = GST_VIDEO_FORMAT_INVZ;
1374 format = GST_VIDEO_FORMAT_UNKNOWN;
1382 gst_v4l2_object_v4l2fourcc_is_rgb (guint32 fourcc)
1384 gboolean ret = FALSE;
1387 case V4L2_PIX_FMT_XRGB555:
1388 case V4L2_PIX_FMT_RGB555:
1389 case V4L2_PIX_FMT_XRGB555X:
1390 case V4L2_PIX_FMT_RGB555X:
1391 case V4L2_PIX_FMT_RGB565:
1392 case V4L2_PIX_FMT_RGB24:
1393 case V4L2_PIX_FMT_BGR24:
1394 case V4L2_PIX_FMT_XRGB32:
1395 case V4L2_PIX_FMT_RGB32:
1396 case V4L2_PIX_FMT_XBGR32:
1397 case V4L2_PIX_FMT_BGR32:
1398 case V4L2_PIX_FMT_ABGR32:
1399 case V4L2_PIX_FMT_ARGB32:
1400 case V4L2_PIX_FMT_SBGGR8:
1401 case V4L2_PIX_FMT_SGBRG8:
1402 case V4L2_PIX_FMT_SGRBG8:
1403 case V4L2_PIX_FMT_SRGGB8:
1413 static GstStructure *
1414 gst_v4l2_object_v4l2fourcc_to_bare_struct (guint32 fourcc)
1416 GstStructure *structure = NULL;
1419 case V4L2_PIX_FMT_MJPEG: /* Motion-JPEG */
1420 case V4L2_PIX_FMT_PJPG: /* Progressive-JPEG */
1421 case V4L2_PIX_FMT_JPEG: /* JFIF JPEG */
1422 structure = gst_structure_new_empty ("image/jpeg");
1424 case V4L2_PIX_FMT_MPEG1:
1425 structure = gst_structure_new ("video/mpeg",
1426 "mpegversion", G_TYPE_INT, 1, NULL);
1428 case V4L2_PIX_FMT_MPEG2:
1429 structure = gst_structure_new ("video/mpeg",
1430 "mpegversion", G_TYPE_INT, 2, NULL);
1432 case V4L2_PIX_FMT_MPEG4:
1433 case V4L2_PIX_FMT_XVID:
1434 structure = gst_structure_new ("video/mpeg",
1435 "mpegversion", G_TYPE_INT, 4, "systemstream",
1436 G_TYPE_BOOLEAN, FALSE, NULL);
1438 case V4L2_PIX_FMT_FWHT:
1439 structure = gst_structure_new_empty ("video/x-fwht");
1441 case V4L2_PIX_FMT_H263:
1442 structure = gst_structure_new ("video/x-h263",
1443 "variant", G_TYPE_STRING, "itu", NULL);
1445 case V4L2_PIX_FMT_H264: /* H.264 */
1446 structure = gst_structure_new ("video/x-h264",
1447 "stream-format", G_TYPE_STRING, "byte-stream", "alignment",
1448 G_TYPE_STRING, "au", NULL);
1450 case V4L2_PIX_FMT_H264_NO_SC:
1451 structure = gst_structure_new ("video/x-h264",
1452 "stream-format", G_TYPE_STRING, "avc", "alignment",
1453 G_TYPE_STRING, "au", NULL);
1455 case V4L2_PIX_FMT_HEVC: /* H.265 */
1456 structure = gst_structure_new ("video/x-h265",
1457 "stream-format", G_TYPE_STRING, "byte-stream", "alignment",
1458 G_TYPE_STRING, "au", NULL);
1460 case V4L2_PIX_FMT_VC1_ANNEX_G:
1461 case V4L2_PIX_FMT_VC1_ANNEX_L:
1462 structure = gst_structure_new ("video/x-wmv",
1463 "wmvversion", G_TYPE_INT, 3, "format", G_TYPE_STRING, "WVC1", NULL);
1465 case V4L2_PIX_FMT_VP8:
1466 structure = gst_structure_new_empty ("video/x-vp8");
1468 case V4L2_PIX_FMT_VP9:
1469 structure = gst_structure_new_empty ("video/x-vp9");
1471 case V4L2_PIX_FMT_GREY: /* 8 Greyscale */
1472 case V4L2_PIX_FMT_Y16:
1473 case V4L2_PIX_FMT_Y16_BE:
1474 case V4L2_PIX_FMT_XRGB555:
1475 case V4L2_PIX_FMT_RGB555:
1476 case V4L2_PIX_FMT_XRGB555X:
1477 case V4L2_PIX_FMT_RGB555X:
1478 case V4L2_PIX_FMT_RGB565:
1479 case V4L2_PIX_FMT_RGB24:
1480 case V4L2_PIX_FMT_BGR24:
1481 case V4L2_PIX_FMT_RGB32:
1482 case V4L2_PIX_FMT_XRGB32:
1483 case V4L2_PIX_FMT_ARGB32:
1484 case V4L2_PIX_FMT_BGR32:
1485 case V4L2_PIX_FMT_XBGR32:
1486 case V4L2_PIX_FMT_ABGR32:
1487 case V4L2_PIX_FMT_NV12: /* 12 Y/CbCr 4:2:0 */
1488 case V4L2_PIX_FMT_NV12M:
1489 case V4L2_PIX_FMT_NV12MT:
1490 case V4L2_PIX_FMT_NV21: /* 12 Y/CrCb 4:2:0 */
1491 case V4L2_PIX_FMT_NV21M:
1492 case V4L2_PIX_FMT_NV16: /* 16 Y/CbCr 4:2:2 */
1493 case V4L2_PIX_FMT_NV16M:
1494 case V4L2_PIX_FMT_NV61: /* 16 Y/CrCb 4:2:2 */
1495 case V4L2_PIX_FMT_NV61M:
1496 case V4L2_PIX_FMT_NV24: /* 24 Y/CrCb 4:4:4 */
1497 case V4L2_PIX_FMT_YVU410:
1498 case V4L2_PIX_FMT_YUV410:
1499 case V4L2_PIX_FMT_YUV420: /* I420/IYUV */
1500 case V4L2_PIX_FMT_YUV420M:
1501 case V4L2_PIX_FMT_YUYV:
1502 case V4L2_PIX_FMT_YVU420:
1503 case V4L2_PIX_FMT_UYVY:
1504 case V4L2_PIX_FMT_YUV422P:
1505 case V4L2_PIX_FMT_YVYU:
1506 case V4L2_PIX_FMT_YUV411P:
1507 case V4L2_PIX_FMT_INVZ:{
1508 GstVideoFormat format;
1509 format = gst_v4l2_object_v4l2fourcc_to_video_format (fourcc);
1510 if (format != GST_VIDEO_FORMAT_UNKNOWN)
1511 structure = gst_structure_new ("video/x-raw",
1512 "format", G_TYPE_STRING, gst_video_format_to_string (format), NULL);
1515 case V4L2_PIX_FMT_DV:
1517 gst_structure_new ("video/x-dv", "systemstream", G_TYPE_BOOLEAN, TRUE,
1520 case V4L2_PIX_FMT_MPEG: /* MPEG */
1521 structure = gst_structure_new ("video/mpegts",
1522 "systemstream", G_TYPE_BOOLEAN, TRUE, NULL);
1524 case V4L2_PIX_FMT_WNVA: /* Winnov hw compres */
1526 case V4L2_PIX_FMT_SBGGR8:
1527 case V4L2_PIX_FMT_SGBRG8:
1528 case V4L2_PIX_FMT_SGRBG8:
1529 case V4L2_PIX_FMT_SRGGB8:
1530 structure = gst_structure_new ("video/x-bayer", "format", G_TYPE_STRING,
1531 fourcc == V4L2_PIX_FMT_SBGGR8 ? "bggr" :
1532 fourcc == V4L2_PIX_FMT_SGBRG8 ? "gbrg" :
1533 fourcc == V4L2_PIX_FMT_SGRBG8 ? "grbg" :
1534 /* fourcc == V4L2_PIX_FMT_SRGGB8 ? */ "rggb", NULL);
1536 case V4L2_PIX_FMT_SN9C10X:
1537 structure = gst_structure_new_empty ("video/x-sonix");
1539 case V4L2_PIX_FMT_PWC1:
1540 structure = gst_structure_new_empty ("video/x-pwc1");
1542 case V4L2_PIX_FMT_PWC2:
1543 structure = gst_structure_new_empty ("video/x-pwc2");
1545 case V4L2_PIX_FMT_RGB332:
1546 case V4L2_PIX_FMT_BGR666:
1547 case V4L2_PIX_FMT_ARGB555X:
1548 case V4L2_PIX_FMT_RGB565X:
1549 case V4L2_PIX_FMT_RGB444:
1550 case V4L2_PIX_FMT_YYUV: /* 16 YUV 4:2:2 */
1551 case V4L2_PIX_FMT_HI240: /* 8 8-bit color */
1552 case V4L2_PIX_FMT_Y4:
1553 case V4L2_PIX_FMT_Y6:
1554 case V4L2_PIX_FMT_Y10:
1555 case V4L2_PIX_FMT_Y12:
1556 case V4L2_PIX_FMT_Y10BPACK:
1557 case V4L2_PIX_FMT_YUV444:
1558 case V4L2_PIX_FMT_YUV555:
1559 case V4L2_PIX_FMT_YUV565:
1560 case V4L2_PIX_FMT_Y41P:
1561 case V4L2_PIX_FMT_YUV32:
1562 case V4L2_PIX_FMT_NV12MT_16X16:
1563 case V4L2_PIX_FMT_NV42:
1564 case V4L2_PIX_FMT_H264_MVC:
1566 GST_DEBUG ("Unsupported fourcc 0x%08x %" GST_FOURCC_FORMAT,
1567 fourcc, GST_FOURCC_ARGS (fourcc));
1575 gst_v4l2_object_v4l2fourcc_to_structure (guint32 fourcc)
1577 GstStructure *template;
1580 template = gst_v4l2_object_v4l2fourcc_to_bare_struct (fourcc);
1582 if (template == NULL)
1585 for (i = 0; i < GST_V4L2_FORMAT_COUNT; i++) {
1586 if (gst_v4l2_formats[i].format != fourcc)
1589 if (gst_v4l2_formats[i].dimensions) {
1590 gst_structure_set (template,
1591 "width", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
1592 "height", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
1593 "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
1604 gst_v4l2_object_get_caps_helper (GstV4L2FormatFlags flags)
1606 GstStructure *structure;
1610 caps = gst_caps_new_empty ();
1611 for (i = 0; i < GST_V4L2_FORMAT_COUNT; i++) {
1613 if ((gst_v4l2_formats[i].flags & flags) == 0)
1617 gst_v4l2_object_v4l2fourcc_to_bare_struct (gst_v4l2_formats[i].format);
1620 GstStructure *alt_s = NULL;
1622 if (gst_v4l2_formats[i].dimensions) {
1623 gst_structure_set (structure,
1624 "width", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
1625 "height", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
1626 "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
1629 switch (gst_v4l2_formats[i].format) {
1630 case V4L2_PIX_FMT_RGB32:
1631 alt_s = gst_structure_copy (structure);
1632 gst_structure_set (alt_s, "format", G_TYPE_STRING, "ARGB", NULL);
1634 case V4L2_PIX_FMT_BGR32:
1635 alt_s = gst_structure_copy (structure);
1636 gst_structure_set (alt_s, "format", G_TYPE_STRING, "BGRA", NULL);
1641 gst_caps_append_structure (caps, structure);
1644 gst_caps_append_structure (caps, alt_s);
1648 return gst_caps_simplify (caps);
1652 gst_v4l2_object_get_all_caps (void)
1654 static GstCaps *caps = NULL;
1656 if (g_once_init_enter (&caps)) {
1657 GstCaps *all_caps = gst_v4l2_object_get_caps_helper (GST_V4L2_ALL);
1658 GST_MINI_OBJECT_FLAG_SET (all_caps, GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
1659 g_once_init_leave (&caps, all_caps);
1666 gst_v4l2_object_get_raw_caps (void)
1668 static GstCaps *caps = NULL;
1670 if (g_once_init_enter (&caps)) {
1671 GstCaps *raw_caps = gst_v4l2_object_get_caps_helper (GST_V4L2_RAW);
1672 GST_MINI_OBJECT_FLAG_SET (raw_caps, GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
1673 g_once_init_leave (&caps, raw_caps);
1680 gst_v4l2_object_get_codec_caps (void)
1682 static GstCaps *caps = NULL;
1684 if (g_once_init_enter (&caps)) {
1685 GstCaps *codec_caps = gst_v4l2_object_get_caps_helper (GST_V4L2_CODEC);
1686 GST_MINI_OBJECT_FLAG_SET (codec_caps, GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
1687 g_once_init_leave (&caps, codec_caps);
1693 /* collect data for the given caps
1694 * @caps: given input caps
1695 * @format: location for the v4l format
1696 * @w/@h: location for width and height
1697 * @fps_n/@fps_d: location for framerate
1698 * @size: location for expected size of the frame or 0 if unknown
1701 gst_v4l2_object_get_caps_info (GstV4l2Object * v4l2object, GstCaps * caps,
1702 struct v4l2_fmtdesc **format, GstVideoInfo * info)
1704 GstStructure *structure;
1705 guint32 fourcc = 0, fourcc_nc = 0;
1706 const gchar *mimetype;
1707 struct v4l2_fmtdesc *fmt = NULL;
1709 structure = gst_caps_get_structure (caps, 0);
1711 mimetype = gst_structure_get_name (structure);
1713 if (!gst_video_info_from_caps (info, caps))
1714 goto invalid_format;
1716 if (g_str_equal (mimetype, "video/x-raw")) {
1717 switch (GST_VIDEO_INFO_FORMAT (info)) {
1718 case GST_VIDEO_FORMAT_I420:
1719 fourcc = V4L2_PIX_FMT_YUV420;
1720 fourcc_nc = V4L2_PIX_FMT_YUV420M;
1722 case GST_VIDEO_FORMAT_YUY2:
1723 fourcc = V4L2_PIX_FMT_YUYV;
1725 case GST_VIDEO_FORMAT_UYVY:
1726 fourcc = V4L2_PIX_FMT_UYVY;
1728 case GST_VIDEO_FORMAT_YV12:
1729 fourcc = V4L2_PIX_FMT_YVU420;
1731 case GST_VIDEO_FORMAT_Y41B:
1732 fourcc = V4L2_PIX_FMT_YUV411P;
1734 case GST_VIDEO_FORMAT_Y42B:
1735 fourcc = V4L2_PIX_FMT_YUV422P;
1737 case GST_VIDEO_FORMAT_NV12:
1738 fourcc = V4L2_PIX_FMT_NV12;
1739 fourcc_nc = V4L2_PIX_FMT_NV12M;
1741 case GST_VIDEO_FORMAT_NV12_64Z32:
1742 fourcc_nc = V4L2_PIX_FMT_NV12MT;
1744 case GST_VIDEO_FORMAT_NV21:
1745 fourcc = V4L2_PIX_FMT_NV21;
1746 fourcc_nc = V4L2_PIX_FMT_NV21M;
1748 case GST_VIDEO_FORMAT_NV16:
1749 fourcc = V4L2_PIX_FMT_NV16;
1750 fourcc_nc = V4L2_PIX_FMT_NV16M;
1752 case GST_VIDEO_FORMAT_NV61:
1753 fourcc = V4L2_PIX_FMT_NV61;
1754 fourcc_nc = V4L2_PIX_FMT_NV61M;
1756 case GST_VIDEO_FORMAT_NV24:
1757 fourcc = V4L2_PIX_FMT_NV24;
1759 case GST_VIDEO_FORMAT_YVYU:
1760 fourcc = V4L2_PIX_FMT_YVYU;
1762 case GST_VIDEO_FORMAT_RGB15:
1763 fourcc = V4L2_PIX_FMT_RGB555;
1764 fourcc_nc = V4L2_PIX_FMT_XRGB555;
1766 case GST_VIDEO_FORMAT_RGB16:
1767 fourcc = V4L2_PIX_FMT_RGB565;
1769 case GST_VIDEO_FORMAT_RGB:
1770 fourcc = V4L2_PIX_FMT_RGB24;
1772 case GST_VIDEO_FORMAT_BGR:
1773 fourcc = V4L2_PIX_FMT_BGR24;
1775 case GST_VIDEO_FORMAT_xRGB:
1776 fourcc = V4L2_PIX_FMT_RGB32;
1777 fourcc_nc = V4L2_PIX_FMT_XRGB32;
1779 case GST_VIDEO_FORMAT_ARGB:
1780 fourcc = V4L2_PIX_FMT_RGB32;
1781 fourcc_nc = V4L2_PIX_FMT_ARGB32;
1783 case GST_VIDEO_FORMAT_BGRx:
1784 fourcc = V4L2_PIX_FMT_BGR32;
1785 fourcc_nc = V4L2_PIX_FMT_XBGR32;
1787 case GST_VIDEO_FORMAT_BGRA:
1788 fourcc = V4L2_PIX_FMT_BGR32;
1789 fourcc_nc = V4L2_PIX_FMT_ABGR32;
1791 case GST_VIDEO_FORMAT_GRAY8:
1792 fourcc = V4L2_PIX_FMT_GREY;
1794 case GST_VIDEO_FORMAT_GRAY16_LE:
1795 fourcc = V4L2_PIX_FMT_Y16;
1797 case GST_VIDEO_FORMAT_GRAY16_BE:
1798 fourcc = V4L2_PIX_FMT_Y16_BE;
1800 case GST_VIDEO_FORMAT_INVZ:
1801 fourcc = V4L2_PIX_FMT_INVZ;
1807 if (g_str_equal (mimetype, "video/mpegts")) {
1808 fourcc = V4L2_PIX_FMT_MPEG;
1809 } else if (g_str_equal (mimetype, "video/x-dv")) {
1810 fourcc = V4L2_PIX_FMT_DV;
1811 } else if (g_str_equal (mimetype, "image/jpeg")) {
1812 fourcc = V4L2_PIX_FMT_JPEG;
1813 } else if (g_str_equal (mimetype, "video/mpeg")) {
1815 if (gst_structure_get_int (structure, "mpegversion", &version)) {
1818 fourcc = V4L2_PIX_FMT_MPEG1;
1821 fourcc = V4L2_PIX_FMT_MPEG2;
1824 fourcc = V4L2_PIX_FMT_MPEG4;
1825 fourcc_nc = V4L2_PIX_FMT_XVID;
1831 } else if (g_str_equal (mimetype, "video/x-fwht")) {
1832 fourcc = V4L2_PIX_FMT_FWHT;
1833 } else if (g_str_equal (mimetype, "video/x-h263")) {
1834 fourcc = V4L2_PIX_FMT_H263;
1835 } else if (g_str_equal (mimetype, "video/x-h264")) {
1836 const gchar *stream_format =
1837 gst_structure_get_string (structure, "stream-format");
1838 if (g_str_equal (stream_format, "avc"))
1839 fourcc = V4L2_PIX_FMT_H264_NO_SC;
1841 fourcc = V4L2_PIX_FMT_H264;
1842 } else if (g_str_equal (mimetype, "video/x-h265")) {
1843 fourcc = V4L2_PIX_FMT_HEVC;
1844 } else if (g_str_equal (mimetype, "video/x-vp8")) {
1845 fourcc = V4L2_PIX_FMT_VP8;
1846 } else if (g_str_equal (mimetype, "video/x-vp9")) {
1847 fourcc = V4L2_PIX_FMT_VP9;
1848 } else if (g_str_equal (mimetype, "video/x-bayer")) {
1849 const gchar *format = gst_structure_get_string (structure, "format");
1851 if (!g_ascii_strcasecmp (format, "bggr"))
1852 fourcc = V4L2_PIX_FMT_SBGGR8;
1853 else if (!g_ascii_strcasecmp (format, "gbrg"))
1854 fourcc = V4L2_PIX_FMT_SGBRG8;
1855 else if (!g_ascii_strcasecmp (format, "grbg"))
1856 fourcc = V4L2_PIX_FMT_SGRBG8;
1857 else if (!g_ascii_strcasecmp (format, "rggb"))
1858 fourcc = V4L2_PIX_FMT_SRGGB8;
1860 } else if (g_str_equal (mimetype, "video/x-sonix")) {
1861 fourcc = V4L2_PIX_FMT_SN9C10X;
1862 } else if (g_str_equal (mimetype, "video/x-pwc1")) {
1863 fourcc = V4L2_PIX_FMT_PWC1;
1864 } else if (g_str_equal (mimetype, "video/x-pwc2")) {
1865 fourcc = V4L2_PIX_FMT_PWC2;
1870 /* Prefer the non-contiguous if supported */
1871 v4l2object->prefered_non_contiguous = TRUE;
1874 fmt = gst_v4l2_object_get_format_from_fourcc (v4l2object, fourcc_nc);
1875 else if (fourcc == 0)
1876 goto unhandled_format;
1879 fmt = gst_v4l2_object_get_format_from_fourcc (v4l2object, fourcc);
1880 v4l2object->prefered_non_contiguous = FALSE;
1884 goto unsupported_format;
1893 GST_DEBUG_OBJECT (v4l2object, "invalid format");
1898 GST_DEBUG_OBJECT (v4l2object, "unhandled format");
1903 GST_DEBUG_OBJECT (v4l2object, "unsupported format");
1909 gst_v4l2_object_get_nearest_size (GstV4l2Object * v4l2object,
1910 guint32 pixelformat, gint * width, gint * height);
1913 gst_v4l2_object_add_aspect_ratio (GstV4l2Object * v4l2object, GstStructure * s)
1915 if (v4l2object->keep_aspect && v4l2object->par)
1916 gst_structure_set_value (s, "pixel-aspect-ratio", v4l2object->par);
1919 /* returns TRUE if the value was changed in place, otherwise FALSE */
1921 gst_v4l2src_value_simplify (GValue * val)
1923 /* simplify list of one value to one value */
1924 if (GST_VALUE_HOLDS_LIST (val) && gst_value_list_get_size (val) == 1) {
1925 const GValue *list_val;
1926 GValue new_val = G_VALUE_INIT;
1928 list_val = gst_value_list_get_value (val, 0);
1929 g_value_init (&new_val, G_VALUE_TYPE (list_val));
1930 g_value_copy (list_val, &new_val);
1931 g_value_unset (val);
1940 gst_v4l2_object_get_interlace_mode (enum v4l2_field field,
1941 GstVideoInterlaceMode * interlace_mode)
1944 case V4L2_FIELD_ANY:
1946 ("Driver bug detected - check driver with v4l2-compliance from http://git.linuxtv.org/v4l-utils.git\n");
1948 case V4L2_FIELD_NONE:
1949 *interlace_mode = GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
1951 case V4L2_FIELD_INTERLACED:
1952 case V4L2_FIELD_INTERLACED_TB:
1953 case V4L2_FIELD_INTERLACED_BT:
1954 *interlace_mode = GST_VIDEO_INTERLACE_MODE_INTERLEAVED;
1957 GST_ERROR ("Unknown enum v4l2_field %d", field);
1963 gst_v4l2_object_get_colorspace (struct v4l2_format *fmt,
1964 GstVideoColorimetry * cinfo)
1967 gst_v4l2_object_v4l2fourcc_is_rgb (fmt->fmt.pix.pixelformat);
1968 enum v4l2_colorspace colorspace;
1969 enum v4l2_quantization range;
1970 enum v4l2_ycbcr_encoding matrix;
1971 enum v4l2_xfer_func transfer;
1972 gboolean ret = TRUE;
1974 if (V4L2_TYPE_IS_MULTIPLANAR (fmt->type)) {
1975 colorspace = fmt->fmt.pix_mp.colorspace;
1976 range = fmt->fmt.pix_mp.quantization;
1977 matrix = fmt->fmt.pix_mp.ycbcr_enc;
1978 transfer = fmt->fmt.pix_mp.xfer_func;
1980 colorspace = fmt->fmt.pix.colorspace;
1981 range = fmt->fmt.pix.quantization;
1982 matrix = fmt->fmt.pix.ycbcr_enc;
1983 transfer = fmt->fmt.pix.xfer_func;
1986 /* First step, set the defaults for each primaries */
1987 switch (colorspace) {
1988 case V4L2_COLORSPACE_SMPTE170M:
1989 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
1990 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
1991 cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
1992 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_SMPTE170M;
1994 case V4L2_COLORSPACE_REC709:
1995 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
1996 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT709;
1997 cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
1998 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT709;
2000 case V4L2_COLORSPACE_SRGB:
2001 case V4L2_COLORSPACE_JPEG:
2002 cinfo->range = GST_VIDEO_COLOR_RANGE_0_255;
2003 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
2004 cinfo->transfer = GST_VIDEO_TRANSFER_SRGB;
2005 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT709;
2007 case V4L2_COLORSPACE_OPRGB:
2008 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2009 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
2010 cinfo->transfer = GST_VIDEO_TRANSFER_ADOBERGB;
2011 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_ADOBERGB;
2013 case V4L2_COLORSPACE_BT2020:
2014 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2015 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT2020;
2016 cinfo->transfer = GST_VIDEO_TRANSFER_BT2020_12;
2017 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT2020;
2019 case V4L2_COLORSPACE_SMPTE240M:
2020 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2021 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_SMPTE240M;
2022 cinfo->transfer = GST_VIDEO_TRANSFER_SMPTE240M;
2023 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_SMPTE240M;
2025 case V4L2_COLORSPACE_470_SYSTEM_M:
2026 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2027 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
2028 cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
2029 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT470M;
2031 case V4L2_COLORSPACE_470_SYSTEM_BG:
2032 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2033 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
2034 cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
2035 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT470BG;
2037 case V4L2_COLORSPACE_RAW:
2038 /* Explicitly unknown */
2039 cinfo->range = GST_VIDEO_COLOR_RANGE_UNKNOWN;
2040 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_UNKNOWN;
2041 cinfo->transfer = GST_VIDEO_TRANSFER_UNKNOWN;
2042 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_UNKNOWN;
2045 GST_DEBUG ("Unknown enum v4l2_colorspace %d", colorspace);
2053 /* Second step, apply any custom variation */
2055 case V4L2_QUANTIZATION_FULL_RANGE:
2056 cinfo->range = GST_VIDEO_COLOR_RANGE_0_255;
2058 case V4L2_QUANTIZATION_LIM_RANGE:
2059 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2061 case V4L2_QUANTIZATION_DEFAULT:
2062 /* replicated V4L2_MAP_QUANTIZATION_DEFAULT macro behavior */
2063 if (is_rgb && colorspace == V4L2_COLORSPACE_BT2020)
2064 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2065 else if (is_rgb || matrix == V4L2_YCBCR_ENC_XV601
2066 || matrix == V4L2_YCBCR_ENC_XV709
2067 || colorspace == V4L2_COLORSPACE_JPEG)
2068 cinfo->range = GST_VIDEO_COLOR_RANGE_0_255;
2070 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2073 GST_WARNING ("Unknown enum v4l2_quantization value %d", range);
2074 cinfo->range = GST_VIDEO_COLOR_RANGE_UNKNOWN;
2079 case V4L2_YCBCR_ENC_XV601:
2080 case V4L2_YCBCR_ENC_SYCC:
2081 GST_FIXME ("XV601 and SYCC not defined, assuming 601");
2083 case V4L2_YCBCR_ENC_601:
2084 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
2086 case V4L2_YCBCR_ENC_XV709:
2087 GST_FIXME ("XV709 not defined, assuming 709");
2089 case V4L2_YCBCR_ENC_709:
2090 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT709;
2092 case V4L2_YCBCR_ENC_BT2020_CONST_LUM:
2093 GST_FIXME ("BT2020 with constant luma is not defined, assuming BT2020");
2095 case V4L2_YCBCR_ENC_BT2020:
2096 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT2020;
2098 case V4L2_YCBCR_ENC_SMPTE240M:
2099 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_SMPTE240M;
2101 case V4L2_YCBCR_ENC_DEFAULT:
2102 /* nothing, just use defaults for colorspace */
2105 GST_WARNING ("Unknown enum v4l2_ycbcr_encoding value %d", matrix);
2106 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_UNKNOWN;
2110 /* Set identity matrix for R'G'B' formats to avoid creating
2111 * confusion. This though is cosmetic as it's now properly ignored by
2112 * the video info API and videoconvert. */
2114 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_RGB;
2117 case V4L2_XFER_FUNC_709:
2118 if (colorspace == V4L2_COLORSPACE_BT2020 && fmt->fmt.pix.height >= 2160)
2119 cinfo->transfer = GST_VIDEO_TRANSFER_BT2020_12;
2121 cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
2123 case V4L2_XFER_FUNC_SRGB:
2124 cinfo->transfer = GST_VIDEO_TRANSFER_SRGB;
2126 case V4L2_XFER_FUNC_OPRGB:
2127 cinfo->transfer = GST_VIDEO_TRANSFER_ADOBERGB;
2129 case V4L2_XFER_FUNC_SMPTE240M:
2130 cinfo->transfer = GST_VIDEO_TRANSFER_SMPTE240M;
2132 case V4L2_XFER_FUNC_NONE:
2133 cinfo->transfer = GST_VIDEO_TRANSFER_GAMMA10;
2135 case V4L2_XFER_FUNC_DEFAULT:
2136 /* nothing, just use defaults for colorspace */
2139 GST_WARNING ("Unknown enum v4l2_xfer_func value %d", transfer);
2140 cinfo->transfer = GST_VIDEO_TRANSFER_UNKNOWN;
2149 gst_v4l2_object_try_fmt (GstV4l2Object * v4l2object,
2150 struct v4l2_format *try_fmt)
2152 int fd = v4l2object->video_fd;
2153 struct v4l2_format fmt;
2156 memcpy (&fmt, try_fmt, sizeof (fmt));
2157 r = v4l2object->ioctl (fd, VIDIOC_TRY_FMT, &fmt);
2159 if (r < 0 && errno == ENOTTY) {
2160 /* The driver might not implement TRY_FMT, in which case we will try
2162 if (GST_V4L2_IS_ACTIVE (v4l2object))
2165 memcpy (&fmt, try_fmt, sizeof (fmt));
2166 r = v4l2object->ioctl (fd, VIDIOC_S_FMT, &fmt);
2168 memcpy (try_fmt, &fmt, sizeof (fmt));
2173 memcpy (try_fmt, &fmt, sizeof (fmt));
2174 GST_WARNING_OBJECT (v4l2object->dbg_obj,
2175 "Unable to try format: %s", g_strerror (errno));
2181 gst_v4l2_object_add_interlace_mode (GstV4l2Object * v4l2object,
2182 GstStructure * s, guint32 width, guint32 height, guint32 pixelformat)
2184 struct v4l2_format fmt;
2185 GValue interlace_formats = { 0, };
2186 enum v4l2_field formats[] = { V4L2_FIELD_NONE, V4L2_FIELD_INTERLACED };
2188 GstVideoInterlaceMode interlace_mode, prev = -1;
2190 if (!g_str_equal (gst_structure_get_name (s), "video/x-raw"))
2193 if (v4l2object->never_interlaced) {
2194 gst_structure_set (s, "interlace-mode", G_TYPE_STRING, "progressive", NULL);
2198 g_value_init (&interlace_formats, GST_TYPE_LIST);
2200 /* Try twice - once for NONE, once for INTERLACED. */
2201 for (i = 0; i < G_N_ELEMENTS (formats); i++) {
2202 memset (&fmt, 0, sizeof (fmt));
2203 fmt.type = v4l2object->type;
2204 fmt.fmt.pix.width = width;
2205 fmt.fmt.pix.height = height;
2206 fmt.fmt.pix.pixelformat = pixelformat;
2207 fmt.fmt.pix.field = formats[i];
2209 if (gst_v4l2_object_try_fmt (v4l2object, &fmt) == 0 &&
2210 gst_v4l2_object_get_interlace_mode (fmt.fmt.pix.field, &interlace_mode)
2211 && prev != interlace_mode) {
2212 GValue interlace_enum = { 0, };
2213 const gchar *mode_string;
2214 g_value_init (&interlace_enum, G_TYPE_STRING);
2215 mode_string = gst_video_interlace_mode_to_string (interlace_mode);
2216 g_value_set_string (&interlace_enum, mode_string);
2217 gst_value_list_append_and_take_value (&interlace_formats,
2219 prev = interlace_mode;
2223 if (gst_v4l2src_value_simplify (&interlace_formats)
2224 || gst_value_list_get_size (&interlace_formats) > 0)
2225 gst_structure_take_value (s, "interlace-mode", &interlace_formats);
2227 GST_WARNING_OBJECT (v4l2object, "Failed to determine interlace mode");
2233 gst_v4l2_object_fill_colorimetry_list (GValue * list,
2234 GstVideoColorimetry * cinfo)
2236 GValue colorimetry = G_VALUE_INIT;
2239 gboolean found = FALSE;
2241 g_value_init (&colorimetry, G_TYPE_STRING);
2242 g_value_take_string (&colorimetry, gst_video_colorimetry_to_string (cinfo));
2244 /* only insert if no duplicate */
2245 size = gst_value_list_get_size (list);
2246 for (i = 0; i < size; i++) {
2249 tmp = gst_value_list_get_value (list, i);
2250 if (gst_value_compare (&colorimetry, tmp) == GST_VALUE_EQUAL) {
2257 gst_value_list_append_and_take_value (list, &colorimetry);
2259 g_value_unset (&colorimetry);
2263 gst_v4l2_object_add_colorspace (GstV4l2Object * v4l2object, GstStructure * s,
2264 guint32 width, guint32 height, guint32 pixelformat)
2266 struct v4l2_format fmt;
2267 GValue list = G_VALUE_INIT;
2268 GstVideoColorimetry cinfo;
2269 enum v4l2_colorspace req_cspace;
2271 memset (&fmt, 0, sizeof (fmt));
2272 fmt.type = v4l2object->type;
2273 fmt.fmt.pix.width = width;
2274 fmt.fmt.pix.height = height;
2275 fmt.fmt.pix.pixelformat = pixelformat;
2277 g_value_init (&list, GST_TYPE_LIST);
2279 /* step 1: get device default colorspace and insert it first as
2280 * it should be the preferred one */
2281 if (gst_v4l2_object_try_fmt (v4l2object, &fmt) == 0) {
2282 if (gst_v4l2_object_get_colorspace (&fmt, &cinfo))
2283 gst_v4l2_object_fill_colorimetry_list (&list, &cinfo);
2286 /* step 2: probe all colorspace other than default
2287 * We don't probe all colorspace, range, matrix and transfer combination to
2288 * avoid ioctl flooding which could greatly increase initialization time
2289 * with low-speed devices (UVC...) */
2290 for (req_cspace = V4L2_COLORSPACE_SMPTE170M;
2291 req_cspace <= V4L2_COLORSPACE_RAW; req_cspace++) {
2292 /* V4L2_COLORSPACE_BT878 is deprecated and shall not be used, so skip */
2293 if (req_cspace == V4L2_COLORSPACE_BT878)
2296 if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type))
2297 fmt.fmt.pix_mp.colorspace = req_cspace;
2299 fmt.fmt.pix.colorspace = req_cspace;
2301 if (gst_v4l2_object_try_fmt (v4l2object, &fmt) == 0) {
2302 enum v4l2_colorspace colorspace;
2304 if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type))
2305 colorspace = fmt.fmt.pix_mp.colorspace;
2307 colorspace = fmt.fmt.pix.colorspace;
2309 if (colorspace == req_cspace) {
2310 if (gst_v4l2_object_get_colorspace (&fmt, &cinfo))
2311 gst_v4l2_object_fill_colorimetry_list (&list, &cinfo);
2316 if (gst_value_list_get_size (&list) > 0)
2317 gst_structure_take_value (s, "colorimetry", &list);
2319 g_value_unset (&list);
2324 /* The frame interval enumeration code first appeared in Linux 2.6.19. */
2325 static GstStructure *
2326 gst_v4l2_object_probe_caps_for_format_and_size (GstV4l2Object * v4l2object,
2327 guint32 pixelformat,
2328 guint32 width, guint32 height, const GstStructure * template)
2330 gint fd = v4l2object->video_fd;
2331 struct v4l2_frmivalenum ival;
2334 GValue rates = { 0, };
2336 memset (&ival, 0, sizeof (struct v4l2_frmivalenum));
2338 ival.pixel_format = pixelformat;
2340 ival.height = height;
2342 GST_LOG_OBJECT (v4l2object->dbg_obj,
2343 "get frame interval for %ux%u, %" GST_FOURCC_FORMAT, width, height,
2344 GST_FOURCC_ARGS (pixelformat));
2346 /* keep in mind that v4l2 gives us frame intervals (durations); we invert the
2347 * fraction to get framerate */
2348 if (v4l2object->ioctl (fd, VIDIOC_ENUM_FRAMEINTERVALS, &ival) < 0)
2349 goto enum_frameintervals_failed;
2351 if (ival.type == V4L2_FRMIVAL_TYPE_DISCRETE) {
2352 GValue rate = { 0, };
2354 g_value_init (&rates, GST_TYPE_LIST);
2355 g_value_init (&rate, GST_TYPE_FRACTION);
2358 num = ival.discrete.numerator;
2359 denom = ival.discrete.denominator;
2361 if (num > G_MAXINT || denom > G_MAXINT) {
2362 /* let us hope we don't get here... */
2367 GST_LOG_OBJECT (v4l2object->dbg_obj, "adding discrete framerate: %d/%d",
2370 /* swap to get the framerate */
2371 gst_value_set_fraction (&rate, denom, num);
2372 gst_value_list_append_value (&rates, &rate);
2375 } while (v4l2object->ioctl (fd, VIDIOC_ENUM_FRAMEINTERVALS, &ival) >= 0);
2376 } else if (ival.type == V4L2_FRMIVAL_TYPE_STEPWISE) {
2377 GValue min = { 0, };
2378 GValue step = { 0, };
2379 GValue max = { 0, };
2380 gboolean added = FALSE;
2381 guint32 minnum, mindenom;
2382 guint32 maxnum, maxdenom;
2384 g_value_init (&rates, GST_TYPE_LIST);
2386 g_value_init (&min, GST_TYPE_FRACTION);
2387 g_value_init (&step, GST_TYPE_FRACTION);
2388 g_value_init (&max, GST_TYPE_FRACTION);
2391 minnum = ival.stepwise.min.numerator;
2392 mindenom = ival.stepwise.min.denominator;
2393 if (minnum > G_MAXINT || mindenom > G_MAXINT) {
2397 GST_LOG_OBJECT (v4l2object->dbg_obj, "stepwise min frame interval: %d/%d",
2399 gst_value_set_fraction (&min, minnum, mindenom);
2402 maxnum = ival.stepwise.max.numerator;
2403 maxdenom = ival.stepwise.max.denominator;
2404 if (maxnum > G_MAXINT || maxdenom > G_MAXINT) {
2409 GST_LOG_OBJECT (v4l2object->dbg_obj, "stepwise max frame interval: %d/%d",
2411 gst_value_set_fraction (&max, maxnum, maxdenom);
2414 num = ival.stepwise.step.numerator;
2415 denom = ival.stepwise.step.denominator;
2416 if (num > G_MAXINT || denom > G_MAXINT) {
2421 if (num == 0 || denom == 0) {
2422 /* in this case we have a wrong fraction or no step, set the step to max
2423 * so that we only add the min value in the loop below */
2428 /* since we only have gst_value_fraction_subtract and not add, negate the
2430 GST_LOG_OBJECT (v4l2object->dbg_obj, "stepwise step frame interval: %d/%d",
2432 gst_value_set_fraction (&step, -num, denom);
2434 while (gst_value_compare (&min, &max) != GST_VALUE_GREATER_THAN) {
2435 GValue rate = { 0, };
2437 num = gst_value_get_fraction_numerator (&min);
2438 denom = gst_value_get_fraction_denominator (&min);
2439 GST_LOG_OBJECT (v4l2object->dbg_obj, "adding stepwise framerate: %d/%d",
2442 /* invert to get the framerate */
2443 g_value_init (&rate, GST_TYPE_FRACTION);
2444 gst_value_set_fraction (&rate, denom, num);
2445 gst_value_list_append_value (&rates, &rate);
2448 /* we're actually adding because step was negated above. This is because
2449 * there is no _add function... */
2450 if (!gst_value_fraction_subtract (&min, &min, &step)) {
2451 GST_WARNING_OBJECT (v4l2object->dbg_obj, "could not step fraction!");
2456 /* no range was added, leave the default range from the template */
2457 GST_WARNING_OBJECT (v4l2object->dbg_obj,
2458 "no range added, leaving default");
2459 g_value_unset (&rates);
2461 } else if (ival.type == V4L2_FRMIVAL_TYPE_CONTINUOUS) {
2462 guint32 maxnum, maxdenom;
2464 g_value_init (&rates, GST_TYPE_FRACTION_RANGE);
2466 num = ival.stepwise.min.numerator;
2467 denom = ival.stepwise.min.denominator;
2468 if (num > G_MAXINT || denom > G_MAXINT) {
2473 maxnum = ival.stepwise.max.numerator;
2474 maxdenom = ival.stepwise.max.denominator;
2475 if (maxnum > G_MAXINT || maxdenom > G_MAXINT) {
2480 GST_LOG_OBJECT (v4l2object->dbg_obj,
2481 "continuous frame interval %d/%d to %d/%d", maxdenom, maxnum, denom,
2484 gst_value_set_fraction_range_full (&rates, maxdenom, maxnum, denom, num);
2490 s = gst_structure_copy (template);
2491 gst_structure_set (s, "width", G_TYPE_INT, (gint) width,
2492 "height", G_TYPE_INT, (gint) height, NULL);
2494 gst_v4l2_object_add_aspect_ratio (v4l2object, s);
2496 if (!v4l2object->skip_try_fmt_probes) {
2497 gst_v4l2_object_add_interlace_mode (v4l2object, s, width, height,
2499 gst_v4l2_object_add_colorspace (v4l2object, s, width, height, pixelformat);
2502 if (G_IS_VALUE (&rates)) {
2503 gst_v4l2src_value_simplify (&rates);
2504 /* only change the framerate on the template when we have a valid probed new
2506 gst_structure_take_value (s, "framerate", &rates);
2507 } else if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
2508 v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
2509 gst_structure_set (s, "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT,
2515 enum_frameintervals_failed:
2517 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
2518 "Unable to enumerate intervals for %" GST_FOURCC_FORMAT "@%ux%u",
2519 GST_FOURCC_ARGS (pixelformat), width, height);
2524 /* I don't see how this is actually an error, we ignore the format then */
2525 GST_WARNING_OBJECT (v4l2object->dbg_obj,
2526 "Unknown frame interval type at %" GST_FOURCC_FORMAT "@%ux%u: %u",
2527 GST_FOURCC_ARGS (pixelformat), width, height, ival.type);
2533 sort_by_frame_size (GstStructure * s1, GstStructure * s2)
2537 gst_structure_get_int (s1, "width", &w1);
2538 gst_structure_get_int (s1, "height", &h1);
2539 gst_structure_get_int (s2, "width", &w2);
2540 gst_structure_get_int (s2, "height", &h2);
2542 /* I think it's safe to assume that this won't overflow for a while */
2543 return ((w2 * h2) - (w1 * h1));
2547 gst_v4l2_object_update_and_append (GstV4l2Object * v4l2object,
2548 guint32 format, GstCaps * caps, GstStructure * s)
2550 GstStructure *alt_s = NULL;
2552 /* Encoded stream on output buffer need to be parsed */
2553 if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
2554 v4l2object->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
2557 for (; i < GST_V4L2_FORMAT_COUNT; i++) {
2558 if (format == gst_v4l2_formats[i].format &&
2559 gst_v4l2_formats[i].flags & GST_V4L2_CODEC &&
2560 !(gst_v4l2_formats[i].flags & GST_V4L2_NO_PARSE)) {
2561 gst_structure_set (s, "parsed", G_TYPE_BOOLEAN, TRUE, NULL);
2567 if (v4l2object->has_alpha_component &&
2568 (v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
2569 v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) {
2571 case V4L2_PIX_FMT_RGB32:
2572 alt_s = gst_structure_copy (s);
2573 gst_structure_set (alt_s, "format", G_TYPE_STRING, "ARGB", NULL);
2575 case V4L2_PIX_FMT_BGR32:
2576 alt_s = gst_structure_copy (s);
2577 gst_structure_set (alt_s, "format", G_TYPE_STRING, "BGRA", NULL);
2584 gst_caps_append_structure (caps, s);
2587 gst_caps_append_structure (caps, alt_s);
2591 gst_v4l2_object_probe_caps_for_format (GstV4l2Object * v4l2object,
2592 guint32 pixelformat, const GstStructure * template)
2594 GstCaps *ret = gst_caps_new_empty ();
2596 gint fd = v4l2object->video_fd;
2597 struct v4l2_frmsizeenum size;
2598 GList *results = NULL;
2601 if (pixelformat == GST_MAKE_FOURCC ('M', 'P', 'E', 'G')) {
2602 gst_caps_append_structure (ret, gst_structure_copy (template));
2606 memset (&size, 0, sizeof (struct v4l2_frmsizeenum));
2608 size.pixel_format = pixelformat;
2610 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
2611 "Enumerating frame sizes for %" GST_FOURCC_FORMAT,
2612 GST_FOURCC_ARGS (pixelformat));
2614 if (v4l2object->ioctl (fd, VIDIOC_ENUM_FRAMESIZES, &size) < 0)
2615 goto enum_framesizes_failed;
2617 if (size.type == V4L2_FRMSIZE_TYPE_DISCRETE) {
2619 GST_LOG_OBJECT (v4l2object->dbg_obj, "got discrete frame size %dx%d",
2620 size.discrete.width, size.discrete.height);
2622 w = MIN (size.discrete.width, G_MAXINT);
2623 h = MIN (size.discrete.height, G_MAXINT);
2627 gst_v4l2_object_probe_caps_for_format_and_size (v4l2object,
2628 pixelformat, w, h, template);
2631 results = g_list_prepend (results, tmp);
2635 } while (v4l2object->ioctl (fd, VIDIOC_ENUM_FRAMESIZES, &size) >= 0);
2636 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
2637 "done iterating discrete frame sizes");
2638 } else if (size.type == V4L2_FRMSIZE_TYPE_STEPWISE) {
2639 guint32 maxw, maxh, step_w, step_h;
2641 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "we have stepwise frame sizes:");
2642 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "min width: %d",
2643 size.stepwise.min_width);
2644 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "min height: %d",
2645 size.stepwise.min_height);
2646 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "max width: %d",
2647 size.stepwise.max_width);
2648 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "min height: %d",
2649 size.stepwise.max_height);
2650 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "step width: %d",
2651 size.stepwise.step_width);
2652 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "step height: %d",
2653 size.stepwise.step_height);
2655 w = MAX (size.stepwise.min_width, 1);
2656 h = MAX (size.stepwise.min_height, 1);
2657 maxw = MIN (size.stepwise.max_width, G_MAXINT);
2658 maxh = MIN (size.stepwise.max_height, G_MAXINT);
2660 step_w = MAX (size.stepwise.step_width, 1);
2661 step_h = MAX (size.stepwise.step_height, 1);
2663 /* FIXME: check for sanity and that min/max are multiples of the steps */
2665 /* we only query details for the max width/height since it's likely the
2666 * most restricted if there are any resolution-dependent restrictions */
2667 tmp = gst_v4l2_object_probe_caps_for_format_and_size (v4l2object,
2668 pixelformat, maxw, maxh, template);
2671 GValue step_range = G_VALUE_INIT;
2673 g_value_init (&step_range, GST_TYPE_INT_RANGE);
2674 gst_value_set_int_range_step (&step_range, w, maxw, step_w);
2675 gst_structure_set_value (tmp, "width", &step_range);
2677 gst_value_set_int_range_step (&step_range, h, maxh, step_h);
2678 gst_structure_take_value (tmp, "height", &step_range);
2680 /* no point using the results list here, since there's only one struct */
2681 gst_v4l2_object_update_and_append (v4l2object, pixelformat, ret, tmp);
2683 } else if (size.type == V4L2_FRMSIZE_TYPE_CONTINUOUS) {
2686 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "we have continuous frame sizes:");
2687 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "min width: %d",
2688 size.stepwise.min_width);
2689 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "min height: %d",
2690 size.stepwise.min_height);
2691 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "max width: %d",
2692 size.stepwise.max_width);
2693 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "min height: %d",
2694 size.stepwise.max_height);
2696 w = MAX (size.stepwise.min_width, 1);
2697 h = MAX (size.stepwise.min_height, 1);
2698 maxw = MIN (size.stepwise.max_width, G_MAXINT);
2699 maxh = MIN (size.stepwise.max_height, G_MAXINT);
2702 gst_v4l2_object_probe_caps_for_format_and_size (v4l2object, pixelformat,
2705 gst_structure_set (tmp, "width", GST_TYPE_INT_RANGE, (gint) w,
2706 (gint) maxw, "height", GST_TYPE_INT_RANGE, (gint) h, (gint) maxh,
2709 /* no point using the results list here, since there's only one struct */
2710 gst_v4l2_object_update_and_append (v4l2object, pixelformat, ret, tmp);
2716 /* we use an intermediary list to store and then sort the results of the
2717 * probing because we can't make any assumptions about the order in which
2718 * the driver will give us the sizes, but we want the final caps to contain
2719 * the results starting with the highest resolution and having the lowest
2720 * resolution last, since order in caps matters for things like fixation. */
2721 results = g_list_sort (results, (GCompareFunc) sort_by_frame_size);
2722 while (results != NULL) {
2723 gst_v4l2_object_update_and_append (v4l2object, pixelformat, ret,
2725 results = g_list_delete_link (results, results);
2728 if (gst_caps_is_empty (ret))
2729 goto enum_framesizes_no_results;
2734 enum_framesizes_failed:
2736 /* I don't see how this is actually an error */
2737 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
2738 "Failed to enumerate frame sizes for pixelformat %" GST_FOURCC_FORMAT
2739 " (%s)", GST_FOURCC_ARGS (pixelformat), g_strerror (errno));
2740 goto default_frame_sizes;
2742 enum_framesizes_no_results:
2744 /* it's possible that VIDIOC_ENUM_FRAMESIZES is defined but the driver in
2745 * question doesn't actually support it yet */
2746 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
2747 "No results for pixelformat %" GST_FOURCC_FORMAT
2748 " enumerating frame sizes, trying fallback",
2749 GST_FOURCC_ARGS (pixelformat));
2750 goto default_frame_sizes;
2754 GST_WARNING_OBJECT (v4l2object->dbg_obj,
2755 "Unknown frame sizeenum type for pixelformat %" GST_FOURCC_FORMAT
2756 ": %u", GST_FOURCC_ARGS (pixelformat), size.type);
2757 goto default_frame_sizes;
2760 default_frame_sizes:
2762 gint min_w, max_w, min_h, max_h, fix_num = 0, fix_denom = 0;
2764 /* This code is for Linux < 2.6.19 */
2766 max_w = max_h = GST_V4L2_MAX_SIZE;
2767 if (!gst_v4l2_object_get_nearest_size (v4l2object, pixelformat, &min_w,
2769 GST_WARNING_OBJECT (v4l2object->dbg_obj,
2770 "Could not probe minimum capture size for pixelformat %"
2771 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (pixelformat));
2773 if (!gst_v4l2_object_get_nearest_size (v4l2object, pixelformat, &max_w,
2775 GST_WARNING_OBJECT (v4l2object->dbg_obj,
2776 "Could not probe maximum capture size for pixelformat %"
2777 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (pixelformat));
2780 /* Since we can't get framerate directly, try to use the current norm */
2781 if (v4l2object->tv_norm && v4l2object->norms) {
2783 GstTunerNorm *norm = NULL;
2784 GstTunerNorm *current =
2785 gst_v4l2_tuner_get_norm_by_std_id (v4l2object, v4l2object->tv_norm);
2787 for (norms = v4l2object->norms; norms != NULL; norms = norms->next) {
2788 norm = (GstTunerNorm *) norms->data;
2789 if (!strcmp (norm->label, current->label))
2792 /* If it's possible, set framerate to that (discrete) value */
2794 fix_num = gst_value_get_fraction_numerator (&norm->framerate);
2795 fix_denom = gst_value_get_fraction_denominator (&norm->framerate);
2799 tmp = gst_structure_copy (template);
2801 gst_structure_set (tmp, "framerate", GST_TYPE_FRACTION, fix_num,
2803 } else if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
2804 v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
2805 /* if norm can't be used, copy the template framerate */
2806 gst_structure_set (tmp, "framerate", GST_TYPE_FRACTION_RANGE, 0, 1,
2811 gst_structure_set (tmp, "width", G_TYPE_INT, max_w, NULL);
2813 gst_structure_set (tmp, "width", GST_TYPE_INT_RANGE, min_w, max_w, NULL);
2816 gst_structure_set (tmp, "height", G_TYPE_INT, max_h, NULL);
2818 gst_structure_set (tmp, "height", GST_TYPE_INT_RANGE, min_h, max_h, NULL);
2820 gst_v4l2_object_add_aspect_ratio (v4l2object, tmp);
2822 if (!v4l2object->skip_try_fmt_probes) {
2823 /* We could consider setting interlace mode from min and max. */
2824 gst_v4l2_object_add_interlace_mode (v4l2object, tmp, max_w, max_h,
2826 /* We could consider to check colorspace for min too, in case it depends on
2827 * the size. But in this case, min and max could not be enough */
2828 gst_v4l2_object_add_colorspace (v4l2object, tmp, max_w, max_h,
2832 gst_v4l2_object_update_and_append (v4l2object, pixelformat, ret, tmp);
2838 gst_v4l2_object_get_nearest_size (GstV4l2Object * v4l2object,
2839 guint32 pixelformat, gint * width, gint * height)
2841 struct v4l2_format fmt;
2842 gboolean ret = FALSE;
2843 GstVideoInterlaceMode interlace_mode;
2845 g_return_val_if_fail (width != NULL, FALSE);
2846 g_return_val_if_fail (height != NULL, FALSE);
2848 GST_LOG_OBJECT (v4l2object->dbg_obj,
2849 "getting nearest size to %dx%d with format %" GST_FOURCC_FORMAT,
2850 *width, *height, GST_FOURCC_ARGS (pixelformat));
2852 memset (&fmt, 0, sizeof (struct v4l2_format));
2854 /* get size delimiters */
2855 memset (&fmt, 0, sizeof (fmt));
2856 fmt.type = v4l2object->type;
2857 fmt.fmt.pix.width = *width;
2858 fmt.fmt.pix.height = *height;
2859 fmt.fmt.pix.pixelformat = pixelformat;
2860 fmt.fmt.pix.field = V4L2_FIELD_ANY;
2862 if (gst_v4l2_object_try_fmt (v4l2object, &fmt) < 0)
2865 GST_LOG_OBJECT (v4l2object->dbg_obj,
2866 "got nearest size %dx%d", fmt.fmt.pix.width, fmt.fmt.pix.height);
2868 *width = fmt.fmt.pix.width;
2869 *height = fmt.fmt.pix.height;
2871 if (!gst_v4l2_object_get_interlace_mode (fmt.fmt.pix.field, &interlace_mode)) {
2872 GST_WARNING_OBJECT (v4l2object->dbg_obj,
2873 "Unsupported field type for %" GST_FOURCC_FORMAT "@%ux%u: %u",
2874 GST_FOURCC_ARGS (pixelformat), *width, *height, fmt.fmt.pix.field);
2882 GST_WARNING_OBJECT (v4l2object->dbg_obj,
2883 "Unable to try format: %s", g_strerror (errno));
2890 gst_v4l2_object_is_dmabuf_supported (GstV4l2Object * v4l2object)
2892 gboolean ret = TRUE;
2893 struct v4l2_exportbuffer expbuf = {
2894 .type = v4l2object->type,
2897 .flags = O_CLOEXEC | O_RDWR,
2900 if (v4l2object->fmtdesc->flags & V4L2_FMT_FLAG_EMULATED) {
2901 GST_WARNING_OBJECT (v4l2object->dbg_obj,
2902 "libv4l2 converter detected, disabling DMABuf");
2906 /* Expected to fail, but ENOTTY tells us that it is not implemented. */
2907 v4l2object->ioctl (v4l2object->video_fd, VIDIOC_EXPBUF, &expbuf);
2908 if (errno == ENOTTY)
2915 gst_v4l2_object_setup_pool (GstV4l2Object * v4l2object, GstCaps * caps)
2919 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "initializing the %s system",
2920 V4L2_TYPE_IS_OUTPUT (v4l2object->type) ? "output" : "capture");
2922 GST_V4L2_CHECK_OPEN (v4l2object);
2923 GST_V4L2_CHECK_NOT_ACTIVE (v4l2object);
2925 /* find transport */
2926 mode = v4l2object->req_mode;
2928 if (v4l2object->device_caps & V4L2_CAP_READWRITE) {
2929 if (v4l2object->req_mode == GST_V4L2_IO_AUTO)
2930 mode = GST_V4L2_IO_RW;
2931 } else if (v4l2object->req_mode == GST_V4L2_IO_RW)
2932 goto method_not_supported;
2934 if (v4l2object->device_caps & V4L2_CAP_STREAMING) {
2935 if (v4l2object->req_mode == GST_V4L2_IO_AUTO) {
2936 if (!V4L2_TYPE_IS_OUTPUT (v4l2object->type) &&
2937 gst_v4l2_object_is_dmabuf_supported (v4l2object)) {
2938 mode = GST_V4L2_IO_DMABUF;
2940 mode = GST_V4L2_IO_MMAP;
2943 } else if (v4l2object->req_mode == GST_V4L2_IO_MMAP ||
2944 v4l2object->req_mode == GST_V4L2_IO_DMABUF)
2945 goto method_not_supported;
2947 /* if still no transport selected, error out */
2948 if (mode == GST_V4L2_IO_AUTO)
2949 goto no_supported_capture_method;
2951 GST_INFO_OBJECT (v4l2object->dbg_obj, "accessing buffers via mode %d", mode);
2952 v4l2object->mode = mode;
2954 /* If min_buffers is not set, the driver either does not support the control or
2955 it has not been asked yet via propose_allocation/decide_allocation. */
2956 if (!v4l2object->min_buffers)
2957 gst_v4l2_get_driver_min_buffers (v4l2object);
2959 /* Map the buffers */
2960 GST_LOG_OBJECT (v4l2object->dbg_obj, "initiating buffer pool");
2962 if (!(v4l2object->pool = gst_v4l2_buffer_pool_new (v4l2object, caps)))
2963 goto buffer_pool_new_failed;
2965 GST_V4L2_SET_ACTIVE (v4l2object);
2970 buffer_pool_new_failed:
2972 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, READ,
2973 (_("Could not map buffers from device '%s'"),
2974 v4l2object->videodev),
2975 ("Failed to create buffer pool: %s", g_strerror (errno)));
2978 method_not_supported:
2980 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, READ,
2981 (_("The driver of device '%s' does not support the IO method %d"),
2982 v4l2object->videodev, mode), (NULL));
2985 no_supported_capture_method:
2987 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, READ,
2988 (_("The driver of device '%s' does not support any known IO "
2989 "method."), v4l2object->videodev), (NULL));
2995 gst_v4l2_object_set_stride (GstVideoInfo * info, GstVideoAlignment * align,
2996 gint plane, gint stride)
2998 const GstVideoFormatInfo *finfo = info->finfo;
3000 if (GST_VIDEO_FORMAT_INFO_IS_TILED (finfo)) {
3001 gint x_tiles, y_tiles, ws, hs, tile_height, padded_height;
3004 ws = GST_VIDEO_FORMAT_INFO_TILE_WS (finfo);
3005 hs = GST_VIDEO_FORMAT_INFO_TILE_HS (finfo);
3006 tile_height = 1 << hs;
3008 padded_height = GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT (finfo, plane,
3009 info->height + align->padding_top + align->padding_bottom);
3010 padded_height = GST_ROUND_UP_N (padded_height, tile_height);
3012 x_tiles = stride >> ws;
3013 y_tiles = padded_height >> hs;
3014 info->stride[plane] = GST_VIDEO_TILE_MAKE_STRIDE (x_tiles, y_tiles);
3016 info->stride[plane] = stride;
3021 gst_v4l2_object_extrapolate_info (GstV4l2Object * v4l2object,
3022 GstVideoInfo * info, GstVideoAlignment * align, gint stride)
3024 const GstVideoFormatInfo *finfo = info->finfo;
3025 gint i, estride, padded_height;
3028 g_return_if_fail (v4l2object->n_v4l2_planes == 1);
3030 padded_height = info->height + align->padding_top + align->padding_bottom;
3032 for (i = 0; i < finfo->n_planes; i++) {
3033 estride = gst_v4l2_object_extrapolate_stride (finfo, i, stride);
3035 gst_v4l2_object_set_stride (info, align, i, estride);
3037 info->offset[i] = offs;
3039 GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT (finfo, i, padded_height);
3041 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
3042 "Extrapolated for plane %d with base stride %d: "
3043 "stride %d, offset %" G_GSIZE_FORMAT, i, stride, info->stride[i],
3047 /* Update the image size according the amount of data we are going to
3048 * read/write. This workaround bugs in driver where the sizeimage provided
3049 * by TRY/S_FMT represent the buffer length (maximum size) rather then the expected
3050 * bytesused (buffer size). */
3051 if (offs < info->size)
3056 gst_v4l2_object_save_format (GstV4l2Object * v4l2object,
3057 struct v4l2_fmtdesc *fmtdesc, struct v4l2_format *format,
3058 GstVideoInfo * info, GstVideoAlignment * align)
3060 const GstVideoFormatInfo *finfo = info->finfo;
3061 gboolean standard_stride = TRUE;
3062 gint stride, pstride, padded_width, padded_height, i;
3064 if (GST_VIDEO_INFO_FORMAT (info) == GST_VIDEO_FORMAT_ENCODED) {
3065 v4l2object->n_v4l2_planes = 1;
3066 info->size = format->fmt.pix.sizeimage;
3070 /* adjust right padding */
3071 if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type))
3072 stride = format->fmt.pix_mp.plane_fmt[0].bytesperline;
3074 stride = format->fmt.pix.bytesperline;
3076 pstride = GST_VIDEO_FORMAT_INFO_PSTRIDE (finfo, 0);
3078 padded_width = stride / pstride;
3080 /* pstride can be 0 for complex formats */
3081 GST_WARNING_OBJECT (v4l2object->element,
3082 "format %s has a pstride of 0, cannot compute padded with",
3083 gst_video_format_to_string (GST_VIDEO_INFO_FORMAT (info)));
3084 padded_width = stride;
3087 if (padded_width < format->fmt.pix.width)
3088 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3089 "Driver bug detected, stride (%d) is too small for the width (%d)",
3090 padded_width, format->fmt.pix.width);
3092 align->padding_right = padded_width - info->width - align->padding_left;
3094 /* adjust bottom padding */
3095 padded_height = format->fmt.pix.height;
3097 if (GST_VIDEO_FORMAT_INFO_IS_TILED (finfo)) {
3098 guint hs, tile_height;
3100 hs = GST_VIDEO_FORMAT_INFO_TILE_HS (finfo);
3101 tile_height = 1 << hs;
3103 padded_height = GST_ROUND_UP_N (padded_height, tile_height);
3106 align->padding_bottom = padded_height - info->height - align->padding_top;
3108 /* setup the strides and offset */
3109 if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type)) {
3110 struct v4l2_pix_format_mplane *pix_mp = &format->fmt.pix_mp;
3112 /* figure out the frame layout */
3113 v4l2object->n_v4l2_planes = MAX (1, pix_mp->num_planes);
3115 for (i = 0; i < v4l2object->n_v4l2_planes; i++) {
3116 stride = pix_mp->plane_fmt[i].bytesperline;
3118 if (info->stride[i] != stride)
3119 standard_stride = FALSE;
3121 gst_v4l2_object_set_stride (info, align, i, stride);
3122 info->offset[i] = info->size;
3123 info->size += pix_mp->plane_fmt[i].sizeimage;
3126 /* Extrapolate stride if planar format are being set in 1 v4l2 plane */
3127 if (v4l2object->n_v4l2_planes < finfo->n_planes) {
3128 stride = format->fmt.pix_mp.plane_fmt[0].bytesperline;
3129 gst_v4l2_object_extrapolate_info (v4l2object, info, align, stride);
3132 /* only one plane in non-MPLANE mode */
3133 v4l2object->n_v4l2_planes = 1;
3134 info->size = format->fmt.pix.sizeimage;
3135 stride = format->fmt.pix.bytesperline;
3137 if (info->stride[0] != stride)
3138 standard_stride = FALSE;
3140 gst_v4l2_object_extrapolate_info (v4l2object, info, align, stride);
3143 /* adjust the offset to take into account left and top */
3144 if (GST_VIDEO_FORMAT_INFO_IS_TILED (finfo)) {
3145 if ((align->padding_left + align->padding_top) > 0)
3146 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3147 "Left and top padding is not permitted for tiled formats");
3149 for (i = 0; i < finfo->n_planes; i++) {
3152 /* FIXME we assume plane as component as this is true for all supported
3153 * format we support. */
3155 hedge = GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (finfo, i, align->padding_left);
3156 vedge = GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT (finfo, i, align->padding_top);
3158 info->offset[i] += (vedge * info->stride[i]) +
3159 (hedge * GST_VIDEO_INFO_COMP_PSTRIDE (info, i));
3164 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Got sizeimage %" G_GSIZE_FORMAT,
3167 /* to avoid copies we need video meta if there is padding */
3168 v4l2object->need_video_meta =
3169 ((align->padding_top + align->padding_left + align->padding_right +
3170 align->padding_bottom) != 0);
3172 /* ... or if stride is non "standard" */
3173 if (!standard_stride)
3174 v4l2object->need_video_meta = TRUE;
3176 /* ... or also video meta if we use multiple, non-contiguous, planes */
3177 if (v4l2object->n_v4l2_planes > 1)
3178 v4l2object->need_video_meta = TRUE;
3180 v4l2object->info = *info;
3181 v4l2object->align = *align;
3182 v4l2object->format = *format;
3183 v4l2object->fmtdesc = fmtdesc;
3185 /* if we have a framerate pre-calculate duration */
3186 if (info->fps_n > 0 && info->fps_d > 0) {
3187 v4l2object->duration = gst_util_uint64_scale_int (GST_SECOND, info->fps_d,
3190 v4l2object->duration = GST_CLOCK_TIME_NONE;
3195 gst_v4l2_object_extrapolate_stride (const GstVideoFormatInfo * finfo,
3196 gint plane, gint stride)
3200 switch (finfo->format) {
3201 case GST_VIDEO_FORMAT_NV12:
3202 case GST_VIDEO_FORMAT_NV12_64Z32:
3203 case GST_VIDEO_FORMAT_NV21:
3204 case GST_VIDEO_FORMAT_NV16:
3205 case GST_VIDEO_FORMAT_NV61:
3206 case GST_VIDEO_FORMAT_NV24:
3207 estride = (plane == 0 ? 1 : 2) *
3208 GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (finfo, plane, stride);
3211 estride = GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (finfo, plane, stride);
3219 gst_v4l2_video_colorimetry_matches (const GstVideoColorimetry * cinfo,
3220 const gchar * color)
3222 GstVideoColorimetry ci;
3223 static const GstVideoColorimetry ci_likely_jpeg = {
3224 GST_VIDEO_COLOR_RANGE_0_255, GST_VIDEO_COLOR_MATRIX_BT601,
3225 GST_VIDEO_TRANSFER_UNKNOWN, GST_VIDEO_COLOR_PRIMARIES_UNKNOWN
3227 static const GstVideoColorimetry ci_jpeg = {
3228 GST_VIDEO_COLOR_RANGE_0_255, GST_VIDEO_COLOR_MATRIX_BT601,
3229 GST_VIDEO_TRANSFER_SRGB, GST_VIDEO_COLOR_PRIMARIES_BT709
3232 if (!gst_video_colorimetry_from_string (&ci, color))
3235 if (gst_video_colorimetry_is_equal (&ci, cinfo))
3238 /* Allow 1:4:0:0 (produced by jpegdec) if the device expects 1:4:7:1 */
3239 if (gst_video_colorimetry_is_equal (&ci, &ci_likely_jpeg)
3240 && gst_video_colorimetry_is_equal (cinfo, &ci_jpeg))
3247 gst_v4l2_object_set_format_full (GstV4l2Object * v4l2object, GstCaps * caps,
3248 gboolean try_only, GstV4l2Error * error)
3250 gint fd = v4l2object->video_fd;
3251 struct v4l2_format format;
3252 struct v4l2_streamparm streamparm;
3253 enum v4l2_field field;
3254 guint32 pixelformat;
3255 struct v4l2_fmtdesc *fmtdesc;
3257 GstVideoAlignment align;
3258 gint width, height, fps_n, fps_d;
3262 enum v4l2_colorspace colorspace = 0;
3263 enum v4l2_quantization range = 0;
3264 enum v4l2_ycbcr_encoding matrix = 0;
3265 enum v4l2_xfer_func transfer = 0;
3267 gboolean disable_colorimetry = FALSE;
3269 g_return_val_if_fail (!v4l2object->skip_try_fmt_probes ||
3270 gst_caps_is_writable (caps), FALSE);
3272 GST_V4L2_CHECK_OPEN (v4l2object);
3274 GST_V4L2_CHECK_NOT_ACTIVE (v4l2object);
3276 is_mplane = V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type);
3278 gst_video_info_init (&info);
3279 gst_video_alignment_reset (&align);
3281 if (!gst_v4l2_object_get_caps_info (v4l2object, caps, &fmtdesc, &info))
3284 pixelformat = fmtdesc->pixelformat;
3285 width = GST_VIDEO_INFO_WIDTH (&info);
3286 height = GST_VIDEO_INFO_HEIGHT (&info);
3287 fps_n = GST_VIDEO_INFO_FPS_N (&info);
3288 fps_d = GST_VIDEO_INFO_FPS_D (&info);
3290 /* if encoded format (GST_VIDEO_INFO_N_PLANES return 0)
3291 * or if contiguous is prefered */
3292 n_v4l_planes = GST_VIDEO_INFO_N_PLANES (&info);
3293 if (!n_v4l_planes || !v4l2object->prefered_non_contiguous)
3296 if (GST_VIDEO_INFO_IS_INTERLACED (&info)) {
3297 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "interlaced video");
3298 /* ideally we would differentiate between types of interlaced video
3299 * but there is not sufficient information in the caps..
3301 field = V4L2_FIELD_INTERLACED;
3303 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "progressive video");
3304 field = V4L2_FIELD_NONE;
3307 /* We first pick the main colorspace from the primaries */
3308 switch (info.colorimetry.primaries) {
3309 case GST_VIDEO_COLOR_PRIMARIES_BT709:
3310 /* There is two colorspaces using these primaries, use the range to
3312 if (info.colorimetry.range == GST_VIDEO_COLOR_RANGE_16_235)
3313 colorspace = V4L2_COLORSPACE_REC709;
3315 colorspace = V4L2_COLORSPACE_SRGB;
3317 case GST_VIDEO_COLOR_PRIMARIES_BT2020:
3318 colorspace = V4L2_COLORSPACE_BT2020;
3320 case GST_VIDEO_COLOR_PRIMARIES_BT470M:
3321 colorspace = V4L2_COLORSPACE_470_SYSTEM_M;
3323 case GST_VIDEO_COLOR_PRIMARIES_BT470BG:
3324 colorspace = V4L2_COLORSPACE_470_SYSTEM_BG;
3326 case GST_VIDEO_COLOR_PRIMARIES_SMPTE170M:
3327 colorspace = V4L2_COLORSPACE_SMPTE170M;
3329 case GST_VIDEO_COLOR_PRIMARIES_SMPTE240M:
3330 colorspace = V4L2_COLORSPACE_SMPTE240M;
3333 case GST_VIDEO_COLOR_PRIMARIES_FILM:
3334 case GST_VIDEO_COLOR_PRIMARIES_UNKNOWN:
3335 /* We don't know, we will guess */
3339 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3340 "Unknown colorimetry primaries %d", info.colorimetry.primaries);
3344 switch (info.colorimetry.range) {
3345 case GST_VIDEO_COLOR_RANGE_0_255:
3346 range = V4L2_QUANTIZATION_FULL_RANGE;
3348 case GST_VIDEO_COLOR_RANGE_16_235:
3349 range = V4L2_QUANTIZATION_LIM_RANGE;
3351 case GST_VIDEO_COLOR_RANGE_UNKNOWN:
3352 /* We let the driver pick a default one */
3355 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3356 "Unknown colorimetry range %d", info.colorimetry.range);
3360 switch (info.colorimetry.matrix) {
3361 case GST_VIDEO_COLOR_MATRIX_RGB:
3362 /* Unspecified, leave to default */
3364 /* FCC is about the same as BT601 with less digit */
3365 case GST_VIDEO_COLOR_MATRIX_FCC:
3366 case GST_VIDEO_COLOR_MATRIX_BT601:
3367 matrix = V4L2_YCBCR_ENC_601;
3369 case GST_VIDEO_COLOR_MATRIX_BT709:
3370 matrix = V4L2_YCBCR_ENC_709;
3372 case GST_VIDEO_COLOR_MATRIX_SMPTE240M:
3373 matrix = V4L2_YCBCR_ENC_SMPTE240M;
3375 case GST_VIDEO_COLOR_MATRIX_BT2020:
3376 matrix = V4L2_YCBCR_ENC_BT2020;
3378 case GST_VIDEO_COLOR_MATRIX_UNKNOWN:
3379 /* We let the driver pick a default one */
3382 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3383 "Unknown colorimetry matrix %d", info.colorimetry.matrix);
3387 switch (info.colorimetry.transfer) {
3388 case GST_VIDEO_TRANSFER_GAMMA18:
3389 case GST_VIDEO_TRANSFER_GAMMA20:
3390 case GST_VIDEO_TRANSFER_GAMMA22:
3391 case GST_VIDEO_TRANSFER_GAMMA28:
3392 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3393 "GAMMA 18, 20, 22, 28 transfer functions not supported");
3395 case GST_VIDEO_TRANSFER_GAMMA10:
3396 transfer = V4L2_XFER_FUNC_NONE;
3398 case GST_VIDEO_TRANSFER_BT2020_12:
3399 case GST_VIDEO_TRANSFER_BT709:
3400 transfer = V4L2_XFER_FUNC_709;
3402 case GST_VIDEO_TRANSFER_SMPTE240M:
3403 transfer = V4L2_XFER_FUNC_SMPTE240M;
3405 case GST_VIDEO_TRANSFER_SRGB:
3406 transfer = V4L2_XFER_FUNC_SRGB;
3408 case GST_VIDEO_TRANSFER_LOG100:
3409 case GST_VIDEO_TRANSFER_LOG316:
3410 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3411 "LOG 100, 316 transfer functions not supported");
3412 /* FIXME No known sensible default, maybe AdobeRGB ? */
3414 case GST_VIDEO_TRANSFER_UNKNOWN:
3415 /* We let the driver pick a default one */
3418 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3419 "Unknown colorimetry tranfer %d", info.colorimetry.transfer);
3423 if (colorspace == 0) {
3424 /* Try to guess colorspace according to pixelformat and size */
3425 if (GST_VIDEO_INFO_IS_YUV (&info)) {
3426 if (range == V4L2_QUANTIZATION_FULL_RANGE
3427 && matrix == V4L2_YCBCR_ENC_601 && transfer == 0) {
3428 /* Full range BT.601 YCbCr encoding with unknown primaries and transfer
3429 * function most likely is JPEG */
3430 colorspace = V4L2_COLORSPACE_JPEG;
3431 transfer = V4L2_XFER_FUNC_SRGB;
3433 /* SD streams likely use SMPTE170M and HD streams REC709 */
3434 if (width <= 720 && height <= 576)
3435 colorspace = V4L2_COLORSPACE_SMPTE170M;
3437 colorspace = V4L2_COLORSPACE_REC709;
3439 } else if (GST_VIDEO_INFO_IS_RGB (&info)) {
3440 colorspace = V4L2_COLORSPACE_SRGB;
3441 transfer = V4L2_XFER_FUNC_NONE;
3445 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Desired format %dx%d, format "
3446 "%" GST_FOURCC_FORMAT " stride: %d", width, height,
3447 GST_FOURCC_ARGS (pixelformat), GST_VIDEO_INFO_PLANE_STRIDE (&info, 0));
3449 memset (&format, 0x00, sizeof (struct v4l2_format));
3450 format.type = v4l2object->type;
3453 format.type = v4l2object->type;
3454 format.fmt.pix_mp.pixelformat = pixelformat;
3455 format.fmt.pix_mp.width = width;
3456 format.fmt.pix_mp.height = height;
3457 format.fmt.pix_mp.field = field;
3458 format.fmt.pix_mp.num_planes = n_v4l_planes;
3460 /* try to ask our prefered stride but it's not a failure if not
3462 for (i = 0; i < n_v4l_planes; i++) {
3463 gint stride = GST_VIDEO_INFO_PLANE_STRIDE (&info, i);
3465 if (GST_VIDEO_FORMAT_INFO_IS_TILED (info.finfo))
3466 stride = GST_VIDEO_TILE_X_TILES (stride) <<
3467 GST_VIDEO_FORMAT_INFO_TILE_WS (info.finfo);
3469 format.fmt.pix_mp.plane_fmt[i].bytesperline = stride;
3472 if (GST_VIDEO_INFO_FORMAT (&info) == GST_VIDEO_FORMAT_ENCODED)
3473 format.fmt.pix_mp.plane_fmt[0].sizeimage = ENCODED_BUFFER_SIZE;
3475 gint stride = GST_VIDEO_INFO_PLANE_STRIDE (&info, 0);
3477 format.type = v4l2object->type;
3479 format.fmt.pix.width = width;
3480 format.fmt.pix.height = height;
3481 format.fmt.pix.pixelformat = pixelformat;
3482 format.fmt.pix.field = field;
3484 if (GST_VIDEO_FORMAT_INFO_IS_TILED (info.finfo))
3485 stride = GST_VIDEO_TILE_X_TILES (stride) <<
3486 GST_VIDEO_FORMAT_INFO_TILE_WS (info.finfo);
3488 /* try to ask our prefered stride */
3489 format.fmt.pix.bytesperline = stride;
3491 if (GST_VIDEO_INFO_FORMAT (&info) == GST_VIDEO_FORMAT_ENCODED)
3492 format.fmt.pix.sizeimage = ENCODED_BUFFER_SIZE;
3495 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Desired format is %dx%d, format "
3496 "%" GST_FOURCC_FORMAT ", nb planes %d", format.fmt.pix.width,
3497 format.fmt.pix_mp.height,
3498 GST_FOURCC_ARGS (format.fmt.pix.pixelformat),
3499 is_mplane ? format.fmt.pix_mp.num_planes : 1);
3501 #ifndef GST_DISABLE_GST_DEBUG
3503 for (i = 0; i < format.fmt.pix_mp.num_planes; i++)
3504 GST_DEBUG_OBJECT (v4l2object->dbg_obj, " stride %d",
3505 format.fmt.pix_mp.plane_fmt[i].bytesperline);
3507 GST_DEBUG_OBJECT (v4l2object->dbg_obj, " stride %d",
3508 format.fmt.pix.bytesperline);
3513 format.fmt.pix_mp.colorspace = colorspace;
3514 format.fmt.pix_mp.quantization = range;
3515 format.fmt.pix_mp.ycbcr_enc = matrix;
3516 format.fmt.pix_mp.xfer_func = transfer;
3518 format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
3519 format.fmt.pix.colorspace = colorspace;
3520 format.fmt.pix.quantization = range;
3521 format.fmt.pix.ycbcr_enc = matrix;
3522 format.fmt.pix.xfer_func = transfer;
3525 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Desired colorspace is %d:%d:%d:%d",
3526 colorspace, range, matrix, transfer);
3529 if (v4l2object->ioctl (fd, VIDIOC_TRY_FMT, &format) < 0)
3530 goto try_fmt_failed;
3532 if (v4l2object->ioctl (fd, VIDIOC_S_FMT, &format) < 0)
3533 goto set_fmt_failed;
3537 colorspace = format.fmt.pix_mp.colorspace;
3538 range = format.fmt.pix_mp.quantization;
3539 matrix = format.fmt.pix_mp.ycbcr_enc;
3540 transfer = format.fmt.pix_mp.xfer_func;
3542 colorspace = format.fmt.pix.colorspace;
3543 range = format.fmt.pix.quantization;
3544 matrix = format.fmt.pix.ycbcr_enc;
3545 transfer = format.fmt.pix.xfer_func;
3548 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Got format of %dx%d, format "
3549 "%" GST_FOURCC_FORMAT ", nb planes %d, colorspace %d:%d:%d:%d",
3550 format.fmt.pix.width, format.fmt.pix_mp.height,
3551 GST_FOURCC_ARGS (format.fmt.pix.pixelformat),
3552 is_mplane ? format.fmt.pix_mp.num_planes : 1,
3553 colorspace, range, matrix, transfer);
3555 #ifndef GST_DISABLE_GST_DEBUG
3557 for (i = 0; i < format.fmt.pix_mp.num_planes; i++)
3558 GST_DEBUG_OBJECT (v4l2object->dbg_obj, " stride %d, sizeimage %d",
3559 format.fmt.pix_mp.plane_fmt[i].bytesperline,
3560 format.fmt.pix_mp.plane_fmt[i].sizeimage);
3562 GST_DEBUG_OBJECT (v4l2object->dbg_obj, " stride %d, sizeimage %d",
3563 format.fmt.pix.bytesperline, format.fmt.pix.sizeimage);
3567 if (format.fmt.pix.pixelformat != pixelformat)
3568 goto invalid_pixelformat;
3570 /* Only negotiate size with raw data.
3571 * For some codecs the dimensions are *not* in the bitstream, IIRC VC1
3572 * in ASF mode for example, there is also not reason for a driver to
3573 * change the size. */
3574 if (info.finfo->format != GST_VIDEO_FORMAT_ENCODED) {
3575 /* We can crop larger images */
3576 if (format.fmt.pix.width < width || format.fmt.pix.height < height)
3577 goto invalid_dimensions;
3579 /* Note, this will be adjusted if upstream has non-centered cropping. */
3580 align.padding_top = 0;
3581 align.padding_bottom = format.fmt.pix.height - height;
3582 align.padding_left = 0;
3583 align.padding_right = format.fmt.pix.width - width;
3586 if (is_mplane && format.fmt.pix_mp.num_planes != n_v4l_planes)
3587 goto invalid_planes;
3589 /* used to check colorimetry and interlace mode fields presence */
3590 s = gst_caps_get_structure (caps, 0);
3592 if (!gst_v4l2_object_get_interlace_mode (format.fmt.pix.field,
3593 &info.interlace_mode))
3595 if (gst_structure_has_field (s, "interlace-mode")) {
3596 if (format.fmt.pix.field != field)
3600 if (gst_v4l2_object_get_colorspace (&format, &info.colorimetry)) {
3601 if (gst_structure_has_field (s, "colorimetry")) {
3602 if (!gst_v4l2_video_colorimetry_matches (&info.colorimetry,
3603 gst_structure_get_string (s, "colorimetry")))
3604 goto invalid_colorimetry;
3607 /* The driver (or libv4l2) is miss-behaving, just ignore colorimetry from
3609 disable_colorimetry = TRUE;
3610 if (gst_structure_has_field (s, "colorimetry"))
3611 gst_structure_remove_field (s, "colorimetry");
3614 /* In case we have skipped the try_fmt probes, we'll need to set the
3615 * colorimetry and interlace-mode back into the caps. */
3616 if (v4l2object->skip_try_fmt_probes) {
3617 if (!disable_colorimetry && !gst_structure_has_field (s, "colorimetry")) {
3618 gchar *str = gst_video_colorimetry_to_string (&info.colorimetry);
3619 gst_structure_set (s, "colorimetry", G_TYPE_STRING, str, NULL);
3623 if (!gst_structure_has_field (s, "interlace-mode"))
3624 gst_structure_set (s, "interlace-mode", G_TYPE_STRING,
3625 gst_video_interlace_mode_to_string (info.interlace_mode), NULL);
3628 if (try_only) /* good enough for trying only */
3631 if (GST_VIDEO_INFO_HAS_ALPHA (&info)) {
3632 struct v4l2_control ctl = { 0, };
3633 ctl.id = V4L2_CID_ALPHA_COMPONENT;
3636 if (v4l2object->ioctl (fd, VIDIOC_S_CTRL, &ctl) < 0)
3637 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3638 "Failed to set alpha component value");
3641 /* Is there a reason we require the caller to always specify a framerate? */
3642 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Desired framerate: %u/%u", fps_n,
3645 memset (&streamparm, 0x00, sizeof (struct v4l2_streamparm));
3646 streamparm.type = v4l2object->type;
3648 if (v4l2object->ioctl (fd, VIDIOC_G_PARM, &streamparm) < 0)
3649 goto get_parm_failed;
3651 if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE
3652 || v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
3653 GST_VIDEO_INFO_FPS_N (&info) =
3654 streamparm.parm.capture.timeperframe.denominator;
3655 GST_VIDEO_INFO_FPS_D (&info) =
3656 streamparm.parm.capture.timeperframe.numerator;
3658 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Got capture framerate: %u/%u",
3659 streamparm.parm.capture.timeperframe.denominator,
3660 streamparm.parm.capture.timeperframe.numerator);
3662 /* We used to skip frame rate setup if the camera was already setup
3663 * with the requested frame rate. This breaks some cameras though,
3664 * causing them to not output data (several models of Thinkpad cameras
3665 * have this problem at least).
3666 * So, don't skip. */
3667 GST_LOG_OBJECT (v4l2object->dbg_obj, "Setting capture framerate to %u/%u",
3669 /* We want to change the frame rate, so check whether we can. Some cheap USB
3670 * cameras don't have the capability */
3671 if ((streamparm.parm.capture.capability & V4L2_CAP_TIMEPERFRAME) == 0) {
3672 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
3673 "Not setting capture framerate (not supported)");
3677 /* Note: V4L2 wants the frame interval, we have the frame rate */
3678 streamparm.parm.capture.timeperframe.numerator = fps_d;
3679 streamparm.parm.capture.timeperframe.denominator = fps_n;
3681 /* some cheap USB cam's won't accept any change */
3682 if (v4l2object->ioctl (fd, VIDIOC_S_PARM, &streamparm) < 0)
3683 goto set_parm_failed;
3685 if (streamparm.parm.capture.timeperframe.numerator > 0 &&
3686 streamparm.parm.capture.timeperframe.denominator > 0) {
3687 /* get new values */
3688 fps_d = streamparm.parm.capture.timeperframe.numerator;
3689 fps_n = streamparm.parm.capture.timeperframe.denominator;
3691 GST_INFO_OBJECT (v4l2object->dbg_obj, "Set capture framerate to %u/%u",
3694 /* fix v4l2 capture driver to provide framerate values */
3695 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3696 "Reuse caps framerate %u/%u - fix v4l2 capture driver", fps_n, fps_d);
3699 GST_VIDEO_INFO_FPS_N (&info) = fps_n;
3700 GST_VIDEO_INFO_FPS_D (&info) = fps_d;
3701 } else if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_OUTPUT
3702 || v4l2object->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
3703 GST_VIDEO_INFO_FPS_N (&info) =
3704 streamparm.parm.output.timeperframe.denominator;
3705 GST_VIDEO_INFO_FPS_D (&info) =
3706 streamparm.parm.output.timeperframe.numerator;
3708 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Got output framerate: %u/%u",
3709 streamparm.parm.output.timeperframe.denominator,
3710 streamparm.parm.output.timeperframe.numerator);
3712 GST_LOG_OBJECT (v4l2object->dbg_obj, "Setting output framerate to %u/%u",
3714 if ((streamparm.parm.output.capability & V4L2_CAP_TIMEPERFRAME) == 0) {
3715 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
3716 "Not setting output framerate (not supported)");
3720 /* Note: V4L2 wants the frame interval, we have the frame rate */
3721 streamparm.parm.output.timeperframe.numerator = fps_d;
3722 streamparm.parm.output.timeperframe.denominator = fps_n;
3724 if (v4l2object->ioctl (fd, VIDIOC_S_PARM, &streamparm) < 0)
3725 goto set_parm_failed;
3727 if (streamparm.parm.output.timeperframe.numerator > 0 &&
3728 streamparm.parm.output.timeperframe.denominator > 0) {
3729 /* get new values */
3730 fps_d = streamparm.parm.output.timeperframe.numerator;
3731 fps_n = streamparm.parm.output.timeperframe.denominator;
3733 GST_INFO_OBJECT (v4l2object->dbg_obj, "Set output framerate to %u/%u",
3736 /* fix v4l2 output driver to provide framerate values */
3737 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3738 "Reuse caps framerate %u/%u - fix v4l2 output driver", fps_n, fps_d);
3741 GST_VIDEO_INFO_FPS_N (&info) = fps_n;
3742 GST_VIDEO_INFO_FPS_D (&info) = fps_d;
3746 /* add boolean return, so we can fail on drivers bugs */
3747 gst_v4l2_object_save_format (v4l2object, fmtdesc, &format, &info, &align);
3749 /* now configure the pool */
3750 if (!gst_v4l2_object_setup_pool (v4l2object, caps))
3758 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "can't parse caps %" GST_PTR_FORMAT,
3764 if (errno == EINVAL) {
3765 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
3766 (_("Device '%s' has no supported format"), v4l2object->videodev),
3767 ("Call to TRY_FMT failed for %" GST_FOURCC_FORMAT " @ %dx%d: %s",
3768 GST_FOURCC_ARGS (pixelformat), width, height,
3769 g_strerror (errno)));
3771 GST_V4L2_ERROR (error, RESOURCE, FAILED,
3772 (_("Device '%s' failed during initialization"),
3773 v4l2object->videodev),
3774 ("Call to TRY_FMT failed for %" GST_FOURCC_FORMAT " @ %dx%d: %s",
3775 GST_FOURCC_ARGS (pixelformat), width, height,
3776 g_strerror (errno)));
3782 if (errno == EBUSY) {
3783 GST_V4L2_ERROR (error, RESOURCE, BUSY,
3784 (_("Device '%s' is busy"), v4l2object->videodev),
3785 ("Call to S_FMT failed for %" GST_FOURCC_FORMAT " @ %dx%d: %s",
3786 GST_FOURCC_ARGS (pixelformat), width, height,
3787 g_strerror (errno)));
3788 } else if (errno == EINVAL) {
3789 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
3790 (_("Device '%s' has no supported format"), v4l2object->videodev),
3791 ("Call to S_FMT failed for %" GST_FOURCC_FORMAT " @ %dx%d: %s",
3792 GST_FOURCC_ARGS (pixelformat), width, height,
3793 g_strerror (errno)));
3795 GST_V4L2_ERROR (error, RESOURCE, FAILED,
3796 (_("Device '%s' failed during initialization"),
3797 v4l2object->videodev),
3798 ("Call to S_FMT failed for %" GST_FOURCC_FORMAT " @ %dx%d: %s",
3799 GST_FOURCC_ARGS (pixelformat), width, height,
3800 g_strerror (errno)));
3806 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
3807 (_("Device '%s' cannot capture at %dx%d"),
3808 v4l2object->videodev, width, height),
3809 ("Tried to capture at %dx%d, but device returned size %dx%d",
3810 width, height, format.fmt.pix.width, format.fmt.pix.height));
3813 invalid_pixelformat:
3815 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
3816 (_("Device '%s' cannot capture in the specified format"),
3817 v4l2object->videodev),
3818 ("Tried to capture in %" GST_FOURCC_FORMAT
3819 ", but device returned format" " %" GST_FOURCC_FORMAT,
3820 GST_FOURCC_ARGS (pixelformat),
3821 GST_FOURCC_ARGS (format.fmt.pix.pixelformat)));
3826 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
3827 (_("Device '%s' does support non-contiguous planes"),
3828 v4l2object->videodev),
3829 ("Device wants %d planes", format.fmt.pix_mp.num_planes));
3834 enum v4l2_field wanted_field;
3837 wanted_field = format.fmt.pix_mp.field;
3839 wanted_field = format.fmt.pix.field;
3841 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
3842 (_("Device '%s' does not support %s interlacing"),
3843 v4l2object->videodev,
3844 field == V4L2_FIELD_NONE ? "progressive" : "interleaved"),
3845 ("Device wants %s interlacing",
3846 wanted_field == V4L2_FIELD_NONE ? "progressive" : "interleaved"));
3849 invalid_colorimetry:
3851 gchar *wanted_colorimetry;
3853 wanted_colorimetry = gst_video_colorimetry_to_string (&info.colorimetry);
3855 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
3856 (_("Device '%s' does not support %s colorimetry"),
3857 v4l2object->videodev, gst_structure_get_string (s, "colorimetry")),
3858 ("Device wants %s colorimetry", wanted_colorimetry));
3860 g_free (wanted_colorimetry);
3865 /* it's possible that this call is not supported */
3866 if (errno != EINVAL && errno != ENOTTY) {
3867 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
3868 (_("Could not get parameters on device '%s'"),
3869 v4l2object->videodev), GST_ERROR_SYSTEM);
3875 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
3876 (_("Video device did not accept new frame rate setting.")),
3882 /* setup_pool already send the error */
3888 gst_v4l2_object_set_format (GstV4l2Object * v4l2object, GstCaps * caps,
3889 GstV4l2Error * error)
3891 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Setting format to %" GST_PTR_FORMAT,
3893 return gst_v4l2_object_set_format_full (v4l2object, caps, FALSE, error);
3897 gst_v4l2_object_try_format (GstV4l2Object * v4l2object, GstCaps * caps,
3898 GstV4l2Error * error)
3900 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Trying format %" GST_PTR_FORMAT,
3902 return gst_v4l2_object_set_format_full (v4l2object, caps, TRUE, error);
3906 * gst_v4l2_object_acquire_format:
3907 * @v4l2object the object
3908 * @info a GstVideoInfo to be filled
3910 * Acquire the driver choosen format. This is useful in decoder or encoder elements where
3911 * the output format is choosen by the HW.
3913 * Returns: %TRUE on success, %FALSE on failure.
3916 gst_v4l2_object_acquire_format (GstV4l2Object * v4l2object, GstVideoInfo * info)
3918 struct v4l2_fmtdesc *fmtdesc;
3919 struct v4l2_format fmt;
3920 struct v4l2_crop crop;
3921 struct v4l2_selection sel;
3922 struct v4l2_rect *r = NULL;
3923 GstVideoFormat format;
3924 guint width, height;
3925 GstVideoAlignment align;
3927 gst_video_info_init (info);
3928 gst_video_alignment_reset (&align);
3930 memset (&fmt, 0x00, sizeof (struct v4l2_format));
3931 fmt.type = v4l2object->type;
3932 if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_G_FMT, &fmt) < 0)
3933 goto get_fmt_failed;
3935 fmtdesc = gst_v4l2_object_get_format_from_fourcc (v4l2object,
3936 fmt.fmt.pix.pixelformat);
3937 if (fmtdesc == NULL)
3938 goto unsupported_format;
3940 /* No need to care about mplane, the four first params are the same */
3941 format = gst_v4l2_object_v4l2fourcc_to_video_format (fmt.fmt.pix.pixelformat);
3943 /* fails if we do no translate the fmt.pix.pixelformat to GstVideoFormat */
3944 if (format == GST_VIDEO_FORMAT_UNKNOWN)
3945 goto unsupported_format;
3947 if (fmt.fmt.pix.width == 0 || fmt.fmt.pix.height == 0)
3948 goto invalid_dimensions;
3950 width = fmt.fmt.pix.width;
3951 height = fmt.fmt.pix.height;
3953 /* Use the default compose rectangle */
3954 memset (&sel, 0, sizeof (struct v4l2_selection));
3955 sel.type = v4l2object->type;
3956 sel.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
3957 if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_G_SELECTION, &sel) >= 0) {
3960 /* For ancient kernels, fall back to G_CROP */
3961 memset (&crop, 0, sizeof (struct v4l2_crop));
3962 crop.type = v4l2object->type;
3963 if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_G_CROP, &crop) >= 0)
3967 align.padding_left = r->left;
3968 align.padding_top = r->top;
3969 align.padding_right = width - r->width - r->left;
3970 align.padding_bottom = height - r->height - r->top;
3975 gst_video_info_set_format (info, format, width, height);
3977 switch (fmt.fmt.pix.field) {
3978 case V4L2_FIELD_ANY:
3979 case V4L2_FIELD_NONE:
3980 info->interlace_mode = GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
3982 case V4L2_FIELD_INTERLACED:
3983 case V4L2_FIELD_INTERLACED_TB:
3984 case V4L2_FIELD_INTERLACED_BT:
3985 info->interlace_mode = GST_VIDEO_INTERLACE_MODE_INTERLEAVED;
3988 goto unsupported_field;
3991 gst_v4l2_object_get_colorspace (&fmt, &info->colorimetry);
3993 gst_v4l2_object_save_format (v4l2object, fmtdesc, &fmt, info, &align);
3995 /* Shall we setup the pool ? */
4001 GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
4002 (_("Video device did not provide output format.")), GST_ERROR_SYSTEM);
4007 GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
4008 (_("Video device returned invalid dimensions.")),
4009 ("Expected non 0 dimensions, got %dx%d", fmt.fmt.pix.width,
4010 fmt.fmt.pix.height));
4015 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
4016 (_("Video device uses an unsupported interlacing method.")),
4017 ("V4L2 field type %d not supported", fmt.fmt.pix.field));
4022 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
4023 (_("Video device uses an unsupported pixel format.")),
4024 ("V4L2 format %" GST_FOURCC_FORMAT " not supported",
4025 GST_FOURCC_ARGS (fmt.fmt.pix.pixelformat)));
4031 gst_v4l2_object_set_crop (GstV4l2Object * obj)
4033 struct v4l2_selection sel = { 0 };
4034 struct v4l2_crop crop = { 0 };
4036 sel.type = obj->type;
4037 sel.target = V4L2_SEL_TGT_CROP;
4039 sel.r.left = obj->align.padding_left;
4040 sel.r.top = obj->align.padding_top;
4041 sel.r.width = obj->info.width;
4042 sel.r.height = obj->info.height;
4044 crop.type = obj->type;
4047 if (obj->align.padding_left + obj->align.padding_top +
4048 obj->align.padding_right + obj->align.padding_bottom == 0) {
4049 GST_DEBUG_OBJECT (obj->dbg_obj, "no cropping needed");
4053 GST_DEBUG_OBJECT (obj->dbg_obj,
4054 "Desired cropping left %u, top %u, size %ux%u", crop.c.left, crop.c.top,
4055 crop.c.width, crop.c.height);
4057 if (obj->ioctl (obj->video_fd, VIDIOC_S_SELECTION, &sel) < 0) {
4058 if (errno != ENOTTY) {
4059 GST_WARNING_OBJECT (obj->dbg_obj,
4060 "Failed to set crop rectangle with VIDIOC_S_SELECTION: %s",
4061 g_strerror (errno));
4064 if (obj->ioctl (obj->video_fd, VIDIOC_S_CROP, &crop) < 0) {
4065 GST_WARNING_OBJECT (obj->dbg_obj, "VIDIOC_S_CROP failed");
4069 if (obj->ioctl (obj->video_fd, VIDIOC_G_CROP, &crop) < 0) {
4070 GST_WARNING_OBJECT (obj->dbg_obj, "VIDIOC_G_CROP failed");
4078 GST_DEBUG_OBJECT (obj->dbg_obj,
4079 "Got cropping left %u, top %u, size %ux%u", crop.c.left, crop.c.top,
4080 crop.c.width, crop.c.height);
4086 gst_v4l2_object_caps_equal (GstV4l2Object * v4l2object, GstCaps * caps)
4088 GstStructure *config;
4092 if (!v4l2object->pool)
4095 config = gst_buffer_pool_get_config (v4l2object->pool);
4096 gst_buffer_pool_config_get_params (config, &oldcaps, NULL, NULL, NULL);
4098 ret = oldcaps && gst_caps_is_equal (caps, oldcaps);
4100 gst_structure_free (config);
4106 gst_v4l2_object_caps_is_subset (GstV4l2Object * v4l2object, GstCaps * caps)
4108 GstStructure *config;
4112 if (!v4l2object->pool)
4115 config = gst_buffer_pool_get_config (v4l2object->pool);
4116 gst_buffer_pool_config_get_params (config, &oldcaps, NULL, NULL, NULL);
4118 ret = oldcaps && gst_caps_is_subset (oldcaps, caps);
4120 gst_structure_free (config);
4126 gst_v4l2_object_get_current_caps (GstV4l2Object * v4l2object)
4128 GstStructure *config;
4131 if (!v4l2object->pool)
4134 config = gst_buffer_pool_get_config (v4l2object->pool);
4135 gst_buffer_pool_config_get_params (config, &oldcaps, NULL, NULL, NULL);
4138 gst_caps_ref (oldcaps);
4140 gst_structure_free (config);
4146 gst_v4l2_object_unlock (GstV4l2Object * v4l2object)
4148 gboolean ret = TRUE;
4150 GST_LOG_OBJECT (v4l2object->dbg_obj, "start flushing");
4152 if (v4l2object->pool && gst_buffer_pool_is_active (v4l2object->pool))
4153 gst_buffer_pool_set_flushing (v4l2object->pool, TRUE);
4159 gst_v4l2_object_unlock_stop (GstV4l2Object * v4l2object)
4161 gboolean ret = TRUE;
4163 GST_LOG_OBJECT (v4l2object->dbg_obj, "stop flushing");
4165 if (v4l2object->pool && gst_buffer_pool_is_active (v4l2object->pool))
4166 gst_buffer_pool_set_flushing (v4l2object->pool, FALSE);
4172 gst_v4l2_object_stop (GstV4l2Object * v4l2object)
4174 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "stopping");
4176 if (!GST_V4L2_IS_OPEN (v4l2object))
4178 if (!GST_V4L2_IS_ACTIVE (v4l2object))
4181 if (v4l2object->pool) {
4182 if (!gst_v4l2_buffer_pool_orphan (&v4l2object->pool)) {
4183 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "deactivating pool");
4184 gst_buffer_pool_set_active (v4l2object->pool, FALSE);
4185 gst_object_unref (v4l2object->pool);
4187 v4l2object->pool = NULL;
4190 GST_V4L2_SET_INACTIVE (v4l2object);
4197 gst_v4l2_object_probe_caps (GstV4l2Object * v4l2object, GstCaps * filter)
4203 formats = gst_v4l2_object_get_format_list (v4l2object);
4205 ret = gst_caps_new_empty ();
4207 if (v4l2object->keep_aspect && !v4l2object->par) {
4208 struct v4l2_cropcap cropcap;
4210 memset (&cropcap, 0, sizeof (cropcap));
4212 cropcap.type = v4l2object->type;
4213 if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_CROPCAP, &cropcap) < 0) {
4214 if (errno != ENOTTY)
4215 GST_WARNING_OBJECT (v4l2object->dbg_obj,
4216 "Failed to probe pixel aspect ratio with VIDIOC_CROPCAP: %s",
4217 g_strerror (errno));
4218 } else if (cropcap.pixelaspect.numerator && cropcap.pixelaspect.denominator) {
4219 v4l2object->par = g_new0 (GValue, 1);
4220 g_value_init (v4l2object->par, GST_TYPE_FRACTION);
4221 gst_value_set_fraction (v4l2object->par, cropcap.pixelaspect.numerator,
4222 cropcap.pixelaspect.denominator);
4226 for (walk = formats; walk; walk = walk->next) {
4227 struct v4l2_fmtdesc *format;
4228 GstStructure *template;
4231 format = (struct v4l2_fmtdesc *) walk->data;
4233 template = gst_v4l2_object_v4l2fourcc_to_bare_struct (format->pixelformat);
4236 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
4237 "unknown format %" GST_FOURCC_FORMAT,
4238 GST_FOURCC_ARGS (format->pixelformat));
4242 /* If we have a filter, check if we need to probe this format or not */
4244 GstCaps *format_caps = gst_caps_new_empty ();
4246 gst_caps_append_structure (format_caps, gst_structure_copy (template));
4248 if (!gst_caps_can_intersect (format_caps, filter)) {
4249 gst_caps_unref (format_caps);
4250 gst_structure_free (template);
4254 gst_caps_unref (format_caps);
4257 tmp = gst_v4l2_object_probe_caps_for_format (v4l2object,
4258 format->pixelformat, template);
4260 gst_caps_append (ret, tmp);
4262 gst_structure_free (template);
4269 ret = gst_caps_intersect_full (filter, ret, GST_CAPS_INTERSECT_FIRST);
4270 gst_caps_unref (tmp);
4273 GST_INFO_OBJECT (v4l2object->dbg_obj, "probed caps: %" GST_PTR_FORMAT, ret);
4279 gst_v4l2_object_get_caps (GstV4l2Object * v4l2object, GstCaps * filter)
4283 if (v4l2object->probed_caps == NULL)
4284 v4l2object->probed_caps = gst_v4l2_object_probe_caps (v4l2object, NULL);
4287 ret = gst_caps_intersect_full (filter, v4l2object->probed_caps,
4288 GST_CAPS_INTERSECT_FIRST);
4290 ret = gst_caps_ref (v4l2object->probed_caps);
4297 gst_v4l2_object_decide_allocation (GstV4l2Object * obj, GstQuery * query)
4300 GstBufferPool *pool = NULL, *other_pool = NULL;
4301 GstStructure *config;
4302 guint size, min, max, own_min = 0;
4304 gboolean has_video_meta;
4305 gboolean can_share_own_pool, pushing_from_our_pool = FALSE;
4306 GstAllocator *allocator = NULL;
4307 GstAllocationParams params = { 0 };
4309 GST_DEBUG_OBJECT (obj->dbg_obj, "decide allocation");
4311 g_return_val_if_fail (obj->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
4312 obj->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE, FALSE);
4314 gst_query_parse_allocation (query, &caps, NULL);
4316 if (obj->pool == NULL) {
4317 if (!gst_v4l2_object_setup_pool (obj, caps))
4321 if (gst_query_get_n_allocation_params (query) > 0)
4322 gst_query_parse_nth_allocation_param (query, 0, &allocator, ¶ms);
4324 if (gst_query_get_n_allocation_pools (query) > 0) {
4325 gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
4334 GST_DEBUG_OBJECT (obj->dbg_obj, "allocation: size:%u min:%u max:%u pool:%"
4335 GST_PTR_FORMAT, size, min, max, pool);
4338 gst_query_find_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
4340 can_share_own_pool = (has_video_meta || !obj->need_video_meta);
4342 gst_v4l2_get_driver_min_buffers (obj);
4343 /* We can't share our own pool, if it exceed V4L2 capacity */
4344 if (min + obj->min_buffers + 1 > VIDEO_MAX_FRAME)
4345 can_share_own_pool = FALSE;
4348 switch (obj->mode) {
4349 case GST_V4L2_IO_RW:
4351 /* in READ/WRITE mode, prefer a downstream pool because our own pool
4352 * doesn't help much, we have to write to it as well */
4353 GST_DEBUG_OBJECT (obj->dbg_obj,
4354 "read/write mode: using downstream pool");
4355 /* use the bigest size, when we use our own pool we can't really do any
4356 * other size than what the hardware gives us but for downstream pools
4358 size = MAX (size, obj->info.size);
4359 } else if (can_share_own_pool) {
4360 /* no downstream pool, use our own then */
4361 GST_DEBUG_OBJECT (obj->dbg_obj,
4362 "read/write mode: no downstream pool, using our own");
4363 pool = gst_object_ref (obj->pool);
4364 size = obj->info.size;
4365 pushing_from_our_pool = TRUE;
4369 case GST_V4L2_IO_USERPTR:
4370 case GST_V4L2_IO_DMABUF_IMPORT:
4371 /* in importing mode, prefer our own pool, and pass the other pool to
4372 * our own, so it can serve itself */
4374 goto no_downstream_pool;
4375 gst_v4l2_buffer_pool_set_other_pool (GST_V4L2_BUFFER_POOL (obj->pool),
4378 gst_object_unref (pool);
4379 pool = gst_object_ref (obj->pool);
4380 size = obj->info.size;
4383 case GST_V4L2_IO_MMAP:
4384 case GST_V4L2_IO_DMABUF:
4385 /* in streaming mode, prefer our own pool */
4386 /* Check if we can use it ... */
4387 if (can_share_own_pool) {
4389 gst_object_unref (pool);
4390 pool = gst_object_ref (obj->pool);
4391 size = obj->info.size;
4392 GST_DEBUG_OBJECT (obj->dbg_obj,
4393 "streaming mode: using our own pool %" GST_PTR_FORMAT, pool);
4394 pushing_from_our_pool = TRUE;
4396 GST_DEBUG_OBJECT (obj->dbg_obj,
4397 "streaming mode: copying to downstream pool %" GST_PTR_FORMAT,
4400 GST_DEBUG_OBJECT (obj->dbg_obj,
4401 "streaming mode: no usable pool, copying to generic pool");
4402 size = MAX (size, obj->info.size);
4405 case GST_V4L2_IO_AUTO:
4407 GST_WARNING_OBJECT (obj->dbg_obj, "unhandled mode");
4414 /* If pushing from our own pool, configure it with queried minimum,
4415 * otherwise use the minimum required */
4416 if (pushing_from_our_pool) {
4417 /* When pushing from our own pool, we need what downstream one, to be able
4418 * to fill the pipeline, the minimum required to decoder according to the
4419 * driver and 2 more, so we don't endup up with everything downstream or
4420 * held by the decoder. We account 2 buffers for v4l2 so when one is being
4421 * pushed downstream the other one can already be queued for the next
4423 own_min = min + obj->min_buffers + 2;
4425 /* If no allocation parameters where provided, allow for a little more
4426 * buffers and enable copy threshold */
4429 gst_v4l2_buffer_pool_copy_at_threshold (GST_V4L2_BUFFER_POOL (pool),
4432 gst_v4l2_buffer_pool_copy_at_threshold (GST_V4L2_BUFFER_POOL (pool),
4437 /* In this case we'll have to configure two buffer pool. For our buffer
4438 * pool, we'll need what the driver one, and one more, so we can dequeu */
4439 own_min = obj->min_buffers + 1;
4440 own_min = MAX (own_min, GST_V4L2_MIN_BUFFERS);
4442 /* for the downstream pool, we keep what downstream wants, though ensure
4443 * at least a minimum if downstream didn't suggest anything (we are
4444 * expecting the base class to create a default one for the context) */
4445 min = MAX (min, GST_V4L2_MIN_BUFFERS);
4447 /* To import we need the other pool to hold at least own_min */
4448 if (obj->pool == pool)
4452 /* Request a bigger max, if one was suggested but it's too small */
4454 max = MAX (min, max);
4456 /* First step, configure our own pool */
4457 config = gst_buffer_pool_get_config (obj->pool);
4459 if (obj->need_video_meta || has_video_meta) {
4460 GST_DEBUG_OBJECT (obj->dbg_obj, "activate Video Meta");
4461 gst_buffer_pool_config_add_option (config,
4462 GST_BUFFER_POOL_OPTION_VIDEO_META);
4465 gst_buffer_pool_config_set_allocator (config, allocator, ¶ms);
4466 gst_buffer_pool_config_set_params (config, caps, size, own_min, 0);
4468 GST_DEBUG_OBJECT (obj->dbg_obj, "setting own pool config to %"
4469 GST_PTR_FORMAT, config);
4471 /* Our pool often need to adjust the value */
4472 if (!gst_buffer_pool_set_config (obj->pool, config)) {
4473 config = gst_buffer_pool_get_config (obj->pool);
4475 GST_DEBUG_OBJECT (obj->dbg_obj, "own pool config changed to %"
4476 GST_PTR_FORMAT, config);
4478 /* our pool will adjust the maximum buffer, which we are fine with */
4479 if (!gst_buffer_pool_set_config (obj->pool, config))
4483 /* Now configure the other pool if different */
4484 if (obj->pool != pool)
4488 config = gst_buffer_pool_get_config (other_pool);
4489 gst_buffer_pool_config_set_allocator (config, allocator, ¶ms);
4490 gst_buffer_pool_config_set_params (config, caps, size, min, max);
4492 GST_DEBUG_OBJECT (obj->dbg_obj, "setting other pool config to %"
4493 GST_PTR_FORMAT, config);
4495 /* if downstream supports video metadata, add this to the pool config */
4496 if (has_video_meta) {
4497 GST_DEBUG_OBJECT (obj->dbg_obj, "activate Video Meta");
4498 gst_buffer_pool_config_add_option (config,
4499 GST_BUFFER_POOL_OPTION_VIDEO_META);
4502 if (!gst_buffer_pool_set_config (other_pool, config)) {
4503 config = gst_buffer_pool_get_config (other_pool);
4505 if (!gst_buffer_pool_config_validate_params (config, caps, size, min,
4507 gst_structure_free (config);
4511 if (!gst_buffer_pool_set_config (other_pool, config))
4517 /* For simplicity, simply read back the active configuration, so our base
4518 * class get the right information */
4519 config = gst_buffer_pool_get_config (pool);
4520 gst_buffer_pool_config_get_params (config, NULL, &size, &min, &max);
4521 gst_structure_free (config);
4525 gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
4527 gst_query_add_allocation_pool (query, pool, size, min, max);
4530 gst_object_unref (allocator);
4533 gst_object_unref (pool);
4539 /* setup_pool already send the error */
4544 GST_ELEMENT_ERROR (obj->element, RESOURCE, SETTINGS,
4545 (_("Failed to configure internal buffer pool.")), (NULL));
4550 GST_ELEMENT_ERROR (obj->element, RESOURCE, SETTINGS,
4551 (_("Video device did not suggest any buffer size.")), (NULL));
4557 gst_object_unref (allocator);
4560 gst_object_unref (pool);
4565 GST_ELEMENT_ERROR (obj->element, RESOURCE, SETTINGS,
4566 (_("No downstream pool to import from.")),
4567 ("When importing DMABUF or USERPTR, we need a pool to import from"));
4573 gst_v4l2_object_propose_allocation (GstV4l2Object * obj, GstQuery * query)
4575 GstBufferPool *pool;
4576 /* we need at least 2 buffers to operate */
4577 guint size, min, max;
4581 /* Set defaults allocation parameters */
4582 size = obj->info.size;
4583 min = GST_V4L2_MIN_BUFFERS;
4584 max = VIDEO_MAX_FRAME;
4586 gst_query_parse_allocation (query, &caps, &need_pool);
4591 switch (obj->mode) {
4592 case GST_V4L2_IO_MMAP:
4593 case GST_V4L2_IO_DMABUF:
4594 if ((pool = obj->pool))
4595 gst_object_ref (pool);
4604 GstStructure *config;
4606 /* we had a pool, check caps */
4607 config = gst_buffer_pool_get_config (pool);
4608 gst_buffer_pool_config_get_params (config, &pcaps, NULL, NULL, NULL);
4610 GST_DEBUG_OBJECT (obj->dbg_obj,
4611 "we had a pool with caps %" GST_PTR_FORMAT, pcaps);
4612 if (!gst_caps_is_equal (caps, pcaps)) {
4613 gst_structure_free (config);
4614 gst_object_unref (pool);
4615 goto different_caps;
4617 gst_structure_free (config);
4619 gst_v4l2_get_driver_min_buffers (obj);
4621 min = MAX (obj->min_buffers, GST_V4L2_MIN_BUFFERS);
4623 gst_query_add_allocation_pool (query, pool, size, min, max);
4625 /* we also support various metadata */
4626 gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
4629 gst_object_unref (pool);
4636 GST_DEBUG_OBJECT (obj->dbg_obj, "no caps specified");
4641 /* different caps, we can't use this pool */
4642 GST_DEBUG_OBJECT (obj->dbg_obj, "pool has different caps");
4648 gst_v4l2_object_try_import (GstV4l2Object * obj, GstBuffer * buffer)
4650 GstVideoMeta *vmeta;
4651 guint n_mem = gst_buffer_n_memory (buffer);
4653 /* only import if requested */
4654 switch (obj->mode) {
4655 case GST_V4L2_IO_USERPTR:
4656 case GST_V4L2_IO_DMABUF_IMPORT:
4659 GST_DEBUG_OBJECT (obj->dbg_obj,
4660 "The io-mode does not enable importation");
4664 vmeta = gst_buffer_get_video_meta (buffer);
4665 if (!vmeta && obj->need_video_meta) {
4666 GST_DEBUG_OBJECT (obj->dbg_obj, "Downstream buffer uses standard "
4667 "stride/offset while the driver does not.");
4671 /* we need matching strides/offsets and size */
4674 gboolean need_fmt_update = FALSE;
4676 if (vmeta->n_planes != GST_VIDEO_INFO_N_PLANES (&obj->info)) {
4677 GST_WARNING_OBJECT (obj->dbg_obj,
4678 "Cannot import buffers with different number planes");
4682 for (p = 0; p < vmeta->n_planes; p++) {
4683 if (vmeta->stride[p] < obj->info.stride[p]) {
4684 GST_DEBUG_OBJECT (obj->dbg_obj,
4685 "Not importing as remote stride %i is smaller then %i on plane %u",
4686 vmeta->stride[p], obj->info.stride[p], p);
4688 } else if (vmeta->stride[p] > obj->info.stride[p]) {
4689 need_fmt_update = TRUE;
4692 if (vmeta->offset[p] < obj->info.offset[p]) {
4693 GST_DEBUG_OBJECT (obj->dbg_obj,
4694 "Not importing as offset %" G_GSIZE_FORMAT
4695 " is smaller then %" G_GSIZE_FORMAT " on plane %u",
4696 vmeta->offset[p], obj->info.offset[p], p);
4698 } else if (vmeta->offset[p] > obj->info.offset[p]) {
4699 need_fmt_update = TRUE;
4703 if (need_fmt_update) {
4704 struct v4l2_format format;
4705 gint wanted_stride[GST_VIDEO_MAX_PLANES] = { 0, };
4707 format = obj->format;
4709 /* update the current format with the stride we want to import from */
4710 if (V4L2_TYPE_IS_MULTIPLANAR (obj->type)) {
4713 GST_DEBUG_OBJECT (obj->dbg_obj, "Wanted strides:");
4715 for (i = 0; i < obj->n_v4l2_planes; i++) {
4716 gint stride = vmeta->stride[i];
4718 if (GST_VIDEO_FORMAT_INFO_IS_TILED (obj->info.finfo))
4719 stride = GST_VIDEO_TILE_X_TILES (stride) <<
4720 GST_VIDEO_FORMAT_INFO_TILE_WS (obj->info.finfo);
4722 format.fmt.pix_mp.plane_fmt[i].bytesperline = stride;
4723 wanted_stride[i] = stride;
4724 GST_DEBUG_OBJECT (obj->dbg_obj, " [%u] %i", i, wanted_stride[i]);
4727 gint stride = vmeta->stride[0];
4729 GST_DEBUG_OBJECT (obj->dbg_obj, "Wanted stride: %i", stride);
4731 if (GST_VIDEO_FORMAT_INFO_IS_TILED (obj->info.finfo))
4732 stride = GST_VIDEO_TILE_X_TILES (stride) <<
4733 GST_VIDEO_FORMAT_INFO_TILE_WS (obj->info.finfo);
4735 format.fmt.pix.bytesperline = stride;
4736 wanted_stride[0] = stride;
4739 if (obj->ioctl (obj->video_fd, VIDIOC_S_FMT, &format) < 0) {
4740 GST_WARNING_OBJECT (obj->dbg_obj,
4741 "Something went wrong trying to update current format: %s",
4742 g_strerror (errno));
4746 gst_v4l2_object_save_format (obj, obj->fmtdesc, &format, &obj->info,
4749 if (V4L2_TYPE_IS_MULTIPLANAR (obj->type)) {
4752 for (i = 0; i < obj->n_v4l2_planes; i++) {
4753 if (format.fmt.pix_mp.plane_fmt[i].bytesperline != wanted_stride[i]) {
4754 GST_DEBUG_OBJECT (obj->dbg_obj,
4755 "[%i] Driver did not accept the new stride (wants %i, got %i)",
4756 i, format.fmt.pix_mp.plane_fmt[i].bytesperline,
4762 if (format.fmt.pix.bytesperline != wanted_stride[0]) {
4763 GST_DEBUG_OBJECT (obj->dbg_obj,
4764 "Driver did not accept the new stride (wants %i, got %i)",
4765 format.fmt.pix.bytesperline, wanted_stride[0]);
4772 /* we can always import single memory buffer, but otherwise we need the same
4773 * amount of memory object. */
4774 if (n_mem != 1 && n_mem != obj->n_v4l2_planes) {
4775 GST_DEBUG_OBJECT (obj->dbg_obj, "Can only import %i memory, "
4776 "buffers contains %u memory", obj->n_v4l2_planes, n_mem);
4780 /* For DMABuf importation we need DMABuf of course */
4781 if (obj->mode == GST_V4L2_IO_DMABUF_IMPORT) {
4784 for (i = 0; i < n_mem; i++) {
4785 GstMemory *mem = gst_buffer_peek_memory (buffer, i);
4787 if (!gst_is_dmabuf_memory (mem)) {
4788 GST_DEBUG_OBJECT (obj->dbg_obj, "Cannot import non-DMABuf memory.");
4794 /* for the remaining, only the kernel driver can tell */