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 #ifdef TIZEN_FEATURE_V4L2_TBM_SUPPORT
833 #define DEFAULT_DECODER_OUTPUT_BUFFER_COUNT 5
834 if (v4l2object->tbm_output &&
835 !V4L2_TYPE_IS_OUTPUT (v4l2object->type) && control.value == 1) {
836 v4l2object->min_buffers = DEFAULT_DECODER_OUTPUT_BUFFER_COUNT;
837 GST_WARNING_OBJECT (v4l2object->dbg_obj, "but SET MIN BUFFER COUNT[%d] and it will be [%d] later",
838 v4l2object->min_buffers, v4l2object->min_buffers + 1);
840 v4l2object->min_buffers = control.value;
842 #else /* TIZEN_FEATURE_V4L2_TBM_SUPPORT */
843 v4l2object->min_buffers = control.value;
844 #endif /* TIZEN_FEATURE_V4L2_TBM_SUPPORT */
846 v4l2object->min_buffers = 0;
851 gst_v4l2_set_defaults (GstV4l2Object * v4l2object)
853 GstTunerNorm *norm = NULL;
854 GstTunerChannel *channel = NULL;
857 if (!GST_IS_TUNER (v4l2object->element))
860 tuner = GST_TUNER (v4l2object->element);
862 if (v4l2object->tv_norm)
863 norm = gst_v4l2_tuner_get_norm_by_std_id (v4l2object, v4l2object->tv_norm);
864 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "tv_norm=0x%" G_GINT64_MODIFIER "x, "
865 "norm=%p", (guint64) v4l2object->tv_norm, norm);
867 gst_tuner_set_norm (tuner, norm);
870 GST_TUNER_NORM (gst_tuner_get_norm (GST_TUNER (v4l2object->element)));
872 v4l2object->tv_norm =
873 gst_v4l2_tuner_get_std_id_by_norm (v4l2object, norm);
874 gst_tuner_norm_changed (tuner, norm);
878 if (v4l2object->channel)
879 channel = gst_tuner_find_channel_by_name (tuner, v4l2object->channel);
881 gst_tuner_set_channel (tuner, channel);
884 GST_TUNER_CHANNEL (gst_tuner_get_channel (GST_TUNER
885 (v4l2object->element)));
887 g_free (v4l2object->channel);
888 v4l2object->channel = g_strdup (channel->label);
889 gst_tuner_channel_changed (tuner, channel);
894 && GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
895 if (v4l2object->frequency != 0) {
896 gst_tuner_set_frequency (tuner, channel, v4l2object->frequency);
898 v4l2object->frequency = gst_tuner_get_frequency (tuner, channel);
899 if (v4l2object->frequency == 0) {
901 gst_tuner_set_frequency (tuner, channel, 1000);
909 gst_v4l2_object_open (GstV4l2Object * v4l2object)
911 if (gst_v4l2_open (v4l2object))
912 gst_v4l2_set_defaults (v4l2object);
920 gst_v4l2_object_open_shared (GstV4l2Object * v4l2object, GstV4l2Object * other)
924 ret = gst_v4l2_dup (v4l2object, other);
930 gst_v4l2_object_close (GstV4l2Object * v4l2object)
932 if (!gst_v4l2_close (v4l2object))
935 gst_caps_replace (&v4l2object->probed_caps, NULL);
937 /* reset our copy of the device caps */
938 v4l2object->device_caps = 0;
940 if (v4l2object->formats) {
941 gst_v4l2_object_clear_format_list (v4l2object);
944 if (v4l2object->par) {
945 g_value_unset (v4l2object->par);
946 g_free (v4l2object->par);
947 v4l2object->par = NULL;
950 if (v4l2object->channel) {
951 g_free (v4l2object->channel);
952 v4l2object->channel = NULL;
958 static struct v4l2_fmtdesc *
959 gst_v4l2_object_get_format_from_fourcc (GstV4l2Object * v4l2object,
962 struct v4l2_fmtdesc *fmt;
968 walk = gst_v4l2_object_get_format_list (v4l2object);
970 fmt = (struct v4l2_fmtdesc *) walk->data;
971 if (fmt->pixelformat == fourcc)
973 /* special case for jpeg */
974 if (fmt->pixelformat == V4L2_PIX_FMT_MJPEG ||
975 fmt->pixelformat == V4L2_PIX_FMT_JPEG ||
976 fmt->pixelformat == V4L2_PIX_FMT_PJPG) {
977 if (fourcc == V4L2_PIX_FMT_JPEG || fourcc == V4L2_PIX_FMT_MJPEG ||
978 fourcc == V4L2_PIX_FMT_PJPG) {
982 walk = g_slist_next (walk);
990 /* complete made up ranking, the values themselves are meaningless */
991 /* These ranks MUST be X such that X<<15 fits on a signed int - see
992 the comment at the end of gst_v4l2_object_format_get_rank. */
993 #define YUV_BASE_RANK 1000
994 #define JPEG_BASE_RANK 500
995 #define DV_BASE_RANK 200
996 #define RGB_BASE_RANK 100
997 #define YUV_ODD_BASE_RANK 50
998 #define RGB_ODD_BASE_RANK 25
999 #define BAYER_BASE_RANK 15
1000 #define S910_BASE_RANK 10
1001 #define GREY_BASE_RANK 5
1002 #define PWC_BASE_RANK 1
1005 gst_v4l2_object_format_get_rank (const struct v4l2_fmtdesc *fmt)
1007 guint32 fourcc = fmt->pixelformat;
1008 gboolean emulated = ((fmt->flags & V4L2_FMT_FLAG_EMULATED) != 0);
1012 case V4L2_PIX_FMT_MJPEG:
1013 case V4L2_PIX_FMT_PJPG:
1014 rank = JPEG_BASE_RANK;
1016 case V4L2_PIX_FMT_JPEG:
1017 rank = JPEG_BASE_RANK + 1;
1019 case V4L2_PIX_FMT_MPEG: /* MPEG */
1020 rank = JPEG_BASE_RANK + 2;
1023 case V4L2_PIX_FMT_RGB332:
1024 case V4L2_PIX_FMT_ARGB555:
1025 case V4L2_PIX_FMT_XRGB555:
1026 case V4L2_PIX_FMT_RGB555:
1027 case V4L2_PIX_FMT_ARGB555X:
1028 case V4L2_PIX_FMT_XRGB555X:
1029 case V4L2_PIX_FMT_RGB555X:
1030 case V4L2_PIX_FMT_BGR666:
1031 case V4L2_PIX_FMT_RGB565:
1032 case V4L2_PIX_FMT_RGB565X:
1033 case V4L2_PIX_FMT_RGB444:
1034 case V4L2_PIX_FMT_Y4:
1035 case V4L2_PIX_FMT_Y6:
1036 case V4L2_PIX_FMT_Y10:
1037 case V4L2_PIX_FMT_Y12:
1038 case V4L2_PIX_FMT_Y10BPACK:
1039 case V4L2_PIX_FMT_YUV555:
1040 case V4L2_PIX_FMT_YUV565:
1041 case V4L2_PIX_FMT_YUV32:
1042 case V4L2_PIX_FMT_NV12MT_16X16:
1043 case V4L2_PIX_FMT_NV42:
1044 case V4L2_PIX_FMT_H264_MVC:
1045 rank = RGB_ODD_BASE_RANK;
1048 case V4L2_PIX_FMT_RGB24:
1049 case V4L2_PIX_FMT_BGR24:
1050 rank = RGB_BASE_RANK - 1;
1053 case V4L2_PIX_FMT_RGB32:
1054 case V4L2_PIX_FMT_BGR32:
1055 case V4L2_PIX_FMT_ABGR32:
1056 case V4L2_PIX_FMT_XBGR32:
1057 case V4L2_PIX_FMT_ARGB32:
1058 case V4L2_PIX_FMT_XRGB32:
1059 rank = RGB_BASE_RANK;
1062 case V4L2_PIX_FMT_GREY: /* 8 Greyscale */
1063 case V4L2_PIX_FMT_INVZ:
1064 rank = GREY_BASE_RANK;
1067 case V4L2_PIX_FMT_NV12: /* 12 Y/CbCr 4:2:0 */
1068 case V4L2_PIX_FMT_NV12M: /* Same as NV12 */
1069 case V4L2_PIX_FMT_NV12MT: /* NV12 64x32 tile */
1070 case V4L2_PIX_FMT_NV21: /* 12 Y/CrCb 4:2:0 */
1071 case V4L2_PIX_FMT_NV21M: /* Same as NV21 */
1072 case V4L2_PIX_FMT_YYUV: /* 16 YUV 4:2:2 */
1073 case V4L2_PIX_FMT_HI240: /* 8 8-bit color */
1074 case V4L2_PIX_FMT_NV16: /* 16 Y/CbCr 4:2:2 */
1075 case V4L2_PIX_FMT_NV16M: /* Same as NV16 */
1076 case V4L2_PIX_FMT_NV61: /* 16 Y/CrCb 4:2:2 */
1077 case V4L2_PIX_FMT_NV61M: /* Same as NV61 */
1078 case V4L2_PIX_FMT_NV24: /* 24 Y/CrCb 4:4:4 */
1079 rank = YUV_ODD_BASE_RANK;
1082 case V4L2_PIX_FMT_YVU410: /* YVU9, 9 bits per pixel */
1083 rank = YUV_BASE_RANK + 3;
1085 case V4L2_PIX_FMT_YUV410: /* YUV9, 9 bits per pixel */
1086 rank = YUV_BASE_RANK + 2;
1088 case V4L2_PIX_FMT_YUV420: /* I420, 12 bits per pixel */
1089 case V4L2_PIX_FMT_YUV420M:
1090 rank = YUV_BASE_RANK + 7;
1092 case V4L2_PIX_FMT_YUYV: /* YUY2, 16 bits per pixel */
1093 rank = YUV_BASE_RANK + 10;
1095 case V4L2_PIX_FMT_YVU420: /* YV12, 12 bits per pixel */
1096 rank = YUV_BASE_RANK + 6;
1098 case V4L2_PIX_FMT_UYVY: /* UYVY, 16 bits per pixel */
1099 rank = YUV_BASE_RANK + 9;
1101 case V4L2_PIX_FMT_YUV444:
1102 rank = YUV_BASE_RANK + 6;
1104 case V4L2_PIX_FMT_Y41P: /* Y41P, 12 bits per pixel */
1105 rank = YUV_BASE_RANK + 5;
1107 case V4L2_PIX_FMT_YUV411P: /* Y41B, 12 bits per pixel */
1108 rank = YUV_BASE_RANK + 4;
1110 case V4L2_PIX_FMT_YUV422P: /* Y42B, 16 bits per pixel */
1111 rank = YUV_BASE_RANK + 8;
1114 case V4L2_PIX_FMT_DV:
1115 rank = DV_BASE_RANK;
1118 case V4L2_PIX_FMT_WNVA: /* Winnov hw compres */
1122 case V4L2_PIX_FMT_SBGGR8:
1123 case V4L2_PIX_FMT_SGBRG8:
1124 case V4L2_PIX_FMT_SGRBG8:
1125 case V4L2_PIX_FMT_SRGGB8:
1126 rank = BAYER_BASE_RANK;
1129 case V4L2_PIX_FMT_SN9C10X:
1130 rank = S910_BASE_RANK;
1133 case V4L2_PIX_FMT_PWC1:
1134 rank = PWC_BASE_RANK;
1136 case V4L2_PIX_FMT_PWC2:
1137 rank = PWC_BASE_RANK;
1145 /* All ranks are below 1<<15 so a shift by 15
1146 * will a) make all non-emulated formats larger
1147 * than emulated and b) will not overflow
1158 format_cmp_func (gconstpointer a, gconstpointer b)
1160 const struct v4l2_fmtdesc *fa = a;
1161 const struct v4l2_fmtdesc *fb = b;
1163 if (fa->pixelformat == fb->pixelformat)
1166 return gst_v4l2_object_format_get_rank (fb) -
1167 gst_v4l2_object_format_get_rank (fa);
1170 /******************************************************
1171 * gst_v4l2_object_fill_format_list():
1172 * create list of supported capture formats
1173 * return value: TRUE on success, FALSE on error
1174 ******************************************************/
1176 gst_v4l2_object_fill_format_list (GstV4l2Object * v4l2object,
1177 enum v4l2_buf_type type)
1180 struct v4l2_fmtdesc *format;
1182 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "getting src format enumerations");
1184 /* format enumeration */
1186 format = g_new0 (struct v4l2_fmtdesc, 1);
1189 format->type = type;
1191 if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_ENUM_FMT, format) < 0) {
1192 if (errno == EINVAL) {
1194 break; /* end of enumeration */
1200 GST_LOG_OBJECT (v4l2object->dbg_obj, "index: %u", format->index);
1201 GST_LOG_OBJECT (v4l2object->dbg_obj, "type: %d", format->type);
1202 GST_LOG_OBJECT (v4l2object->dbg_obj, "flags: %08x", format->flags);
1203 GST_LOG_OBJECT (v4l2object->dbg_obj, "description: '%s'",
1204 format->description);
1205 GST_LOG_OBJECT (v4l2object->dbg_obj, "pixelformat: %" GST_FOURCC_FORMAT,
1206 GST_FOURCC_ARGS (format->pixelformat));
1208 /* sort formats according to our preference; we do this, because caps
1209 * are probed in the order the formats are in the list, and the order of
1210 * formats in the final probed caps matters for things like fixation */
1211 v4l2object->formats = g_slist_insert_sorted (v4l2object->formats, format,
1212 (GCompareFunc) format_cmp_func);
1215 #ifndef GST_DISABLE_GST_DEBUG
1219 GST_INFO_OBJECT (v4l2object->dbg_obj, "got %d format(s):", n);
1220 for (l = v4l2object->formats; l != NULL; l = l->next) {
1223 GST_INFO_OBJECT (v4l2object->dbg_obj,
1224 " %" GST_FOURCC_FORMAT "%s", GST_FOURCC_ARGS (format->pixelformat),
1225 ((format->flags & V4L2_FMT_FLAG_EMULATED)) ? " (emulated)" : "");
1237 if (v4l2object->element)
1240 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
1241 (_("Failed to enumerate possible video formats device '%s' can work "
1242 "with"), v4l2object->videodev),
1243 ("Failed to get number %d in pixelformat enumeration for %s. (%d - %s)",
1244 n, v4l2object->videodev, errno, g_strerror (errno)));
1251 * Get the list of supported capture formats, a list of
1252 * <code>struct v4l2_fmtdesc</code>.
1255 gst_v4l2_object_get_format_list (GstV4l2Object * v4l2object)
1257 if (!v4l2object->formats) {
1259 /* check usual way */
1260 gst_v4l2_object_fill_format_list (v4l2object, v4l2object->type);
1262 /* if our driver supports multi-planar
1263 * and if formats are still empty then we can workaround driver bug
1264 * by also looking up formats as if our device was not supporting
1266 if (!v4l2object->formats) {
1267 switch (v4l2object->type) {
1268 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1269 gst_v4l2_object_fill_format_list (v4l2object,
1270 V4L2_BUF_TYPE_VIDEO_CAPTURE);
1273 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1274 gst_v4l2_object_fill_format_list (v4l2object,
1275 V4L2_BUF_TYPE_VIDEO_OUTPUT);
1283 return v4l2object->formats;
1286 static GstVideoFormat
1287 gst_v4l2_object_v4l2fourcc_to_video_format (guint32 fourcc)
1289 GstVideoFormat format;
1292 case V4L2_PIX_FMT_GREY: /* 8 Greyscale */
1293 format = GST_VIDEO_FORMAT_GRAY8;
1295 case V4L2_PIX_FMT_Y16:
1296 format = GST_VIDEO_FORMAT_GRAY16_LE;
1298 case V4L2_PIX_FMT_Y16_BE:
1299 format = GST_VIDEO_FORMAT_GRAY16_BE;
1301 case V4L2_PIX_FMT_XRGB555:
1302 case V4L2_PIX_FMT_RGB555:
1303 format = GST_VIDEO_FORMAT_RGB15;
1305 case V4L2_PIX_FMT_XRGB555X:
1306 case V4L2_PIX_FMT_RGB555X:
1307 format = GST_VIDEO_FORMAT_BGR15;
1309 case V4L2_PIX_FMT_RGB565:
1310 format = GST_VIDEO_FORMAT_RGB16;
1312 case V4L2_PIX_FMT_RGB24:
1313 format = GST_VIDEO_FORMAT_RGB;
1315 case V4L2_PIX_FMT_BGR24:
1316 format = GST_VIDEO_FORMAT_BGR;
1318 case V4L2_PIX_FMT_XRGB32:
1319 case V4L2_PIX_FMT_RGB32:
1320 format = GST_VIDEO_FORMAT_xRGB;
1322 case V4L2_PIX_FMT_XBGR32:
1323 case V4L2_PIX_FMT_BGR32:
1324 format = GST_VIDEO_FORMAT_BGRx;
1326 case V4L2_PIX_FMT_ABGR32:
1327 format = GST_VIDEO_FORMAT_BGRA;
1329 case V4L2_PIX_FMT_ARGB32:
1330 format = GST_VIDEO_FORMAT_ARGB;
1332 case V4L2_PIX_FMT_NV12:
1333 case V4L2_PIX_FMT_NV12M:
1334 format = GST_VIDEO_FORMAT_NV12;
1336 case V4L2_PIX_FMT_NV12MT:
1337 format = GST_VIDEO_FORMAT_NV12_64Z32;
1339 case V4L2_PIX_FMT_NV21:
1340 case V4L2_PIX_FMT_NV21M:
1341 format = GST_VIDEO_FORMAT_NV21;
1343 case V4L2_PIX_FMT_YVU410:
1344 format = GST_VIDEO_FORMAT_YVU9;
1346 case V4L2_PIX_FMT_YUV410:
1347 format = GST_VIDEO_FORMAT_YUV9;
1349 case V4L2_PIX_FMT_YUV420:
1350 case V4L2_PIX_FMT_YUV420M:
1351 format = GST_VIDEO_FORMAT_I420;
1353 case V4L2_PIX_FMT_YUYV:
1354 format = GST_VIDEO_FORMAT_YUY2;
1356 case V4L2_PIX_FMT_YVU420:
1357 format = GST_VIDEO_FORMAT_YV12;
1359 case V4L2_PIX_FMT_UYVY:
1360 format = GST_VIDEO_FORMAT_UYVY;
1362 case V4L2_PIX_FMT_YUV411P:
1363 format = GST_VIDEO_FORMAT_Y41B;
1365 case V4L2_PIX_FMT_YUV422P:
1366 format = GST_VIDEO_FORMAT_Y42B;
1368 case V4L2_PIX_FMT_YVYU:
1369 format = GST_VIDEO_FORMAT_YVYU;
1371 case V4L2_PIX_FMT_NV16:
1372 case V4L2_PIX_FMT_NV16M:
1373 format = GST_VIDEO_FORMAT_NV16;
1375 case V4L2_PIX_FMT_NV61:
1376 case V4L2_PIX_FMT_NV61M:
1377 format = GST_VIDEO_FORMAT_NV61;
1379 case V4L2_PIX_FMT_NV24:
1380 format = GST_VIDEO_FORMAT_NV24;
1382 case V4L2_PIX_FMT_INVZ:
1383 format = GST_VIDEO_FORMAT_INVZ;
1386 format = GST_VIDEO_FORMAT_UNKNOWN;
1394 gst_v4l2_object_v4l2fourcc_is_rgb (guint32 fourcc)
1396 gboolean ret = FALSE;
1399 case V4L2_PIX_FMT_XRGB555:
1400 case V4L2_PIX_FMT_RGB555:
1401 case V4L2_PIX_FMT_XRGB555X:
1402 case V4L2_PIX_FMT_RGB555X:
1403 case V4L2_PIX_FMT_RGB565:
1404 case V4L2_PIX_FMT_RGB24:
1405 case V4L2_PIX_FMT_BGR24:
1406 case V4L2_PIX_FMT_XRGB32:
1407 case V4L2_PIX_FMT_RGB32:
1408 case V4L2_PIX_FMT_XBGR32:
1409 case V4L2_PIX_FMT_BGR32:
1410 case V4L2_PIX_FMT_ABGR32:
1411 case V4L2_PIX_FMT_ARGB32:
1412 case V4L2_PIX_FMT_SBGGR8:
1413 case V4L2_PIX_FMT_SGBRG8:
1414 case V4L2_PIX_FMT_SGRBG8:
1415 case V4L2_PIX_FMT_SRGGB8:
1425 static GstStructure *
1426 gst_v4l2_object_v4l2fourcc_to_bare_struct (guint32 fourcc)
1428 GstStructure *structure = NULL;
1431 case V4L2_PIX_FMT_MJPEG: /* Motion-JPEG */
1432 case V4L2_PIX_FMT_PJPG: /* Progressive-JPEG */
1433 case V4L2_PIX_FMT_JPEG: /* JFIF JPEG */
1434 structure = gst_structure_new_empty ("image/jpeg");
1436 case V4L2_PIX_FMT_MPEG1:
1437 structure = gst_structure_new ("video/mpeg",
1438 "mpegversion", G_TYPE_INT, 1, NULL);
1440 case V4L2_PIX_FMT_MPEG2:
1441 structure = gst_structure_new ("video/mpeg",
1442 "mpegversion", G_TYPE_INT, 2, NULL);
1444 case V4L2_PIX_FMT_MPEG4:
1445 case V4L2_PIX_FMT_XVID:
1446 structure = gst_structure_new ("video/mpeg",
1447 "mpegversion", G_TYPE_INT, 4, "systemstream",
1448 G_TYPE_BOOLEAN, FALSE, NULL);
1450 case V4L2_PIX_FMT_FWHT:
1451 structure = gst_structure_new_empty ("video/x-fwht");
1453 case V4L2_PIX_FMT_H263:
1454 structure = gst_structure_new ("video/x-h263",
1455 "variant", G_TYPE_STRING, "itu", NULL);
1457 case V4L2_PIX_FMT_H264: /* H.264 */
1458 structure = gst_structure_new ("video/x-h264",
1459 "stream-format", G_TYPE_STRING, "byte-stream", "alignment",
1460 G_TYPE_STRING, "au", NULL);
1462 case V4L2_PIX_FMT_H264_NO_SC:
1463 structure = gst_structure_new ("video/x-h264",
1464 "stream-format", G_TYPE_STRING, "avc", "alignment",
1465 G_TYPE_STRING, "au", NULL);
1467 case V4L2_PIX_FMT_HEVC: /* H.265 */
1468 structure = gst_structure_new ("video/x-h265",
1469 "stream-format", G_TYPE_STRING, "byte-stream", "alignment",
1470 G_TYPE_STRING, "au", NULL);
1472 case V4L2_PIX_FMT_VC1_ANNEX_G:
1473 case V4L2_PIX_FMT_VC1_ANNEX_L:
1474 structure = gst_structure_new ("video/x-wmv",
1475 "wmvversion", G_TYPE_INT, 3, "format", G_TYPE_STRING, "WVC1", NULL);
1477 case V4L2_PIX_FMT_VP8:
1478 structure = gst_structure_new_empty ("video/x-vp8");
1480 case V4L2_PIX_FMT_VP9:
1481 structure = gst_structure_new_empty ("video/x-vp9");
1483 case V4L2_PIX_FMT_GREY: /* 8 Greyscale */
1484 case V4L2_PIX_FMT_Y16:
1485 case V4L2_PIX_FMT_Y16_BE:
1486 case V4L2_PIX_FMT_XRGB555:
1487 case V4L2_PIX_FMT_RGB555:
1488 case V4L2_PIX_FMT_XRGB555X:
1489 case V4L2_PIX_FMT_RGB555X:
1490 case V4L2_PIX_FMT_RGB565:
1491 case V4L2_PIX_FMT_RGB24:
1492 case V4L2_PIX_FMT_BGR24:
1493 case V4L2_PIX_FMT_RGB32:
1494 case V4L2_PIX_FMT_XRGB32:
1495 case V4L2_PIX_FMT_ARGB32:
1496 case V4L2_PIX_FMT_BGR32:
1497 case V4L2_PIX_FMT_XBGR32:
1498 case V4L2_PIX_FMT_ABGR32:
1499 case V4L2_PIX_FMT_NV12: /* 12 Y/CbCr 4:2:0 */
1500 case V4L2_PIX_FMT_NV12M:
1501 case V4L2_PIX_FMT_NV12MT:
1502 case V4L2_PIX_FMT_NV21: /* 12 Y/CrCb 4:2:0 */
1503 case V4L2_PIX_FMT_NV21M:
1504 case V4L2_PIX_FMT_NV16: /* 16 Y/CbCr 4:2:2 */
1505 case V4L2_PIX_FMT_NV16M:
1506 case V4L2_PIX_FMT_NV61: /* 16 Y/CrCb 4:2:2 */
1507 case V4L2_PIX_FMT_NV61M:
1508 case V4L2_PIX_FMT_NV24: /* 24 Y/CrCb 4:4:4 */
1509 case V4L2_PIX_FMT_YVU410:
1510 case V4L2_PIX_FMT_YUV410:
1511 case V4L2_PIX_FMT_YUV420: /* I420/IYUV */
1512 case V4L2_PIX_FMT_YUV420M:
1513 case V4L2_PIX_FMT_YUYV:
1514 case V4L2_PIX_FMT_YVU420:
1515 case V4L2_PIX_FMT_UYVY:
1516 case V4L2_PIX_FMT_YUV422P:
1517 case V4L2_PIX_FMT_YVYU:
1518 case V4L2_PIX_FMT_YUV411P:
1519 case V4L2_PIX_FMT_INVZ:{
1520 GstVideoFormat format;
1521 format = gst_v4l2_object_v4l2fourcc_to_video_format (fourcc);
1522 if (format != GST_VIDEO_FORMAT_UNKNOWN)
1523 structure = gst_structure_new ("video/x-raw",
1524 "format", G_TYPE_STRING, gst_video_format_to_string (format), NULL);
1527 case V4L2_PIX_FMT_DV:
1529 gst_structure_new ("video/x-dv", "systemstream", G_TYPE_BOOLEAN, TRUE,
1532 case V4L2_PIX_FMT_MPEG: /* MPEG */
1533 structure = gst_structure_new ("video/mpegts",
1534 "systemstream", G_TYPE_BOOLEAN, TRUE, NULL);
1536 case V4L2_PIX_FMT_WNVA: /* Winnov hw compres */
1538 case V4L2_PIX_FMT_SBGGR8:
1539 case V4L2_PIX_FMT_SGBRG8:
1540 case V4L2_PIX_FMT_SGRBG8:
1541 case V4L2_PIX_FMT_SRGGB8:
1542 structure = gst_structure_new ("video/x-bayer", "format", G_TYPE_STRING,
1543 fourcc == V4L2_PIX_FMT_SBGGR8 ? "bggr" :
1544 fourcc == V4L2_PIX_FMT_SGBRG8 ? "gbrg" :
1545 fourcc == V4L2_PIX_FMT_SGRBG8 ? "grbg" :
1546 /* fourcc == V4L2_PIX_FMT_SRGGB8 ? */ "rggb", NULL);
1548 case V4L2_PIX_FMT_SN9C10X:
1549 structure = gst_structure_new_empty ("video/x-sonix");
1551 case V4L2_PIX_FMT_PWC1:
1552 structure = gst_structure_new_empty ("video/x-pwc1");
1554 case V4L2_PIX_FMT_PWC2:
1555 structure = gst_structure_new_empty ("video/x-pwc2");
1557 case V4L2_PIX_FMT_RGB332:
1558 case V4L2_PIX_FMT_BGR666:
1559 case V4L2_PIX_FMT_ARGB555X:
1560 case V4L2_PIX_FMT_RGB565X:
1561 case V4L2_PIX_FMT_RGB444:
1562 case V4L2_PIX_FMT_YYUV: /* 16 YUV 4:2:2 */
1563 case V4L2_PIX_FMT_HI240: /* 8 8-bit color */
1564 case V4L2_PIX_FMT_Y4:
1565 case V4L2_PIX_FMT_Y6:
1566 case V4L2_PIX_FMT_Y10:
1567 case V4L2_PIX_FMT_Y12:
1568 case V4L2_PIX_FMT_Y10BPACK:
1569 case V4L2_PIX_FMT_YUV444:
1570 case V4L2_PIX_FMT_YUV555:
1571 case V4L2_PIX_FMT_YUV565:
1572 case V4L2_PIX_FMT_Y41P:
1573 case V4L2_PIX_FMT_YUV32:
1574 case V4L2_PIX_FMT_NV12MT_16X16:
1575 case V4L2_PIX_FMT_NV42:
1576 case V4L2_PIX_FMT_H264_MVC:
1578 GST_DEBUG ("Unsupported fourcc 0x%08x %" GST_FOURCC_FORMAT,
1579 fourcc, GST_FOURCC_ARGS (fourcc));
1587 gst_v4l2_object_v4l2fourcc_to_structure (guint32 fourcc)
1589 GstStructure *template;
1592 template = gst_v4l2_object_v4l2fourcc_to_bare_struct (fourcc);
1594 if (template == NULL)
1597 for (i = 0; i < GST_V4L2_FORMAT_COUNT; i++) {
1598 if (gst_v4l2_formats[i].format != fourcc)
1601 if (gst_v4l2_formats[i].dimensions) {
1602 gst_structure_set (template,
1603 "width", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
1604 "height", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
1605 "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
1616 gst_v4l2_object_get_caps_helper (GstV4L2FormatFlags flags)
1618 GstStructure *structure;
1622 caps = gst_caps_new_empty ();
1623 for (i = 0; i < GST_V4L2_FORMAT_COUNT; i++) {
1625 if ((gst_v4l2_formats[i].flags & flags) == 0)
1629 gst_v4l2_object_v4l2fourcc_to_bare_struct (gst_v4l2_formats[i].format);
1632 GstStructure *alt_s = NULL;
1634 if (gst_v4l2_formats[i].dimensions) {
1635 gst_structure_set (structure,
1636 "width", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
1637 "height", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
1638 "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
1641 switch (gst_v4l2_formats[i].format) {
1642 #ifdef TIZEN_FEATURE_V4L2_TBM_SUPPORT
1643 case V4L2_PIX_FMT_YUV420:
1644 alt_s = gst_structure_copy (structure);
1645 gst_structure_set (alt_s, "format", G_TYPE_STRING, "S420", NULL);
1647 case V4L2_PIX_FMT_NV12:
1648 alt_s = gst_structure_copy (structure);
1649 gst_structure_set (alt_s, "format", G_TYPE_STRING, "SN12", NULL);
1651 #endif /* TIZEN_FEATURE_V4L2_TBM_SUPPORT */
1652 case V4L2_PIX_FMT_RGB32:
1653 alt_s = gst_structure_copy (structure);
1654 gst_structure_set (alt_s, "format", G_TYPE_STRING, "ARGB", NULL);
1656 case V4L2_PIX_FMT_BGR32:
1657 alt_s = gst_structure_copy (structure);
1658 gst_structure_set (alt_s, "format", G_TYPE_STRING, "BGRA", NULL);
1663 gst_caps_append_structure (caps, structure);
1666 gst_caps_append_structure (caps, alt_s);
1670 return gst_caps_simplify (caps);
1674 gst_v4l2_object_get_all_caps (void)
1676 static GstCaps *caps = NULL;
1678 if (g_once_init_enter (&caps)) {
1679 GstCaps *all_caps = gst_v4l2_object_get_caps_helper (GST_V4L2_ALL);
1680 GST_MINI_OBJECT_FLAG_SET (all_caps, GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
1681 g_once_init_leave (&caps, all_caps);
1688 gst_v4l2_object_get_raw_caps (void)
1690 static GstCaps *caps = NULL;
1692 if (g_once_init_enter (&caps)) {
1693 GstCaps *raw_caps = gst_v4l2_object_get_caps_helper (GST_V4L2_RAW);
1694 GST_MINI_OBJECT_FLAG_SET (raw_caps, GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
1695 g_once_init_leave (&caps, raw_caps);
1702 gst_v4l2_object_get_codec_caps (void)
1704 static GstCaps *caps = NULL;
1706 if (g_once_init_enter (&caps)) {
1707 GstCaps *codec_caps = gst_v4l2_object_get_caps_helper (GST_V4L2_CODEC);
1708 GST_MINI_OBJECT_FLAG_SET (codec_caps, GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
1709 g_once_init_leave (&caps, codec_caps);
1715 /* collect data for the given caps
1716 * @caps: given input caps
1717 * @format: location for the v4l format
1718 * @w/@h: location for width and height
1719 * @fps_n/@fps_d: location for framerate
1720 * @size: location for expected size of the frame or 0 if unknown
1723 gst_v4l2_object_get_caps_info (GstV4l2Object * v4l2object, GstCaps * caps,
1724 struct v4l2_fmtdesc **format, GstVideoInfo * info)
1726 GstStructure *structure;
1727 guint32 fourcc = 0, fourcc_nc = 0;
1728 const gchar *mimetype;
1729 struct v4l2_fmtdesc *fmt = NULL;
1731 structure = gst_caps_get_structure (caps, 0);
1733 mimetype = gst_structure_get_name (structure);
1735 if (!gst_video_info_from_caps (info, caps))
1736 goto invalid_format;
1738 if (g_str_equal (mimetype, "video/x-raw")) {
1739 switch (GST_VIDEO_INFO_FORMAT (info)) {
1740 case GST_VIDEO_FORMAT_I420:
1741 #ifdef TIZEN_FEATURE_V4L2_TBM_SUPPORT
1742 case GST_VIDEO_FORMAT_S420:
1743 #endif /* TIZEN_FEATURE_V4L2_TBM_SUPPORT */
1744 fourcc = V4L2_PIX_FMT_YUV420;
1745 fourcc_nc = V4L2_PIX_FMT_YUV420M;
1747 case GST_VIDEO_FORMAT_YUY2:
1748 fourcc = V4L2_PIX_FMT_YUYV;
1750 case GST_VIDEO_FORMAT_UYVY:
1751 fourcc = V4L2_PIX_FMT_UYVY;
1753 case GST_VIDEO_FORMAT_YV12:
1754 fourcc = V4L2_PIX_FMT_YVU420;
1756 case GST_VIDEO_FORMAT_Y41B:
1757 fourcc = V4L2_PIX_FMT_YUV411P;
1759 case GST_VIDEO_FORMAT_Y42B:
1760 fourcc = V4L2_PIX_FMT_YUV422P;
1762 case GST_VIDEO_FORMAT_NV12:
1763 #ifdef TIZEN_FEATURE_V4L2_TBM_SUPPORT
1764 case GST_VIDEO_FORMAT_SN12:
1765 #endif /* TIZEN_FEATURE_V4L2_TBM_SUPPORT */
1766 fourcc = V4L2_PIX_FMT_NV12;
1767 fourcc_nc = V4L2_PIX_FMT_NV12M;
1769 case GST_VIDEO_FORMAT_NV12_64Z32:
1770 fourcc_nc = V4L2_PIX_FMT_NV12MT;
1772 case GST_VIDEO_FORMAT_NV21:
1773 fourcc = V4L2_PIX_FMT_NV21;
1774 fourcc_nc = V4L2_PIX_FMT_NV21M;
1776 case GST_VIDEO_FORMAT_NV16:
1777 fourcc = V4L2_PIX_FMT_NV16;
1778 fourcc_nc = V4L2_PIX_FMT_NV16M;
1780 case GST_VIDEO_FORMAT_NV61:
1781 fourcc = V4L2_PIX_FMT_NV61;
1782 fourcc_nc = V4L2_PIX_FMT_NV61M;
1784 case GST_VIDEO_FORMAT_NV24:
1785 fourcc = V4L2_PIX_FMT_NV24;
1787 case GST_VIDEO_FORMAT_YVYU:
1788 fourcc = V4L2_PIX_FMT_YVYU;
1790 case GST_VIDEO_FORMAT_RGB15:
1791 fourcc = V4L2_PIX_FMT_RGB555;
1792 fourcc_nc = V4L2_PIX_FMT_XRGB555;
1794 case GST_VIDEO_FORMAT_RGB16:
1795 fourcc = V4L2_PIX_FMT_RGB565;
1797 case GST_VIDEO_FORMAT_RGB:
1798 fourcc = V4L2_PIX_FMT_RGB24;
1800 case GST_VIDEO_FORMAT_BGR:
1801 fourcc = V4L2_PIX_FMT_BGR24;
1803 case GST_VIDEO_FORMAT_xRGB:
1804 fourcc = V4L2_PIX_FMT_RGB32;
1805 fourcc_nc = V4L2_PIX_FMT_XRGB32;
1807 case GST_VIDEO_FORMAT_ARGB:
1808 fourcc = V4L2_PIX_FMT_RGB32;
1809 fourcc_nc = V4L2_PIX_FMT_ARGB32;
1811 case GST_VIDEO_FORMAT_BGRx:
1812 fourcc = V4L2_PIX_FMT_BGR32;
1813 fourcc_nc = V4L2_PIX_FMT_XBGR32;
1815 case GST_VIDEO_FORMAT_BGRA:
1816 fourcc = V4L2_PIX_FMT_BGR32;
1817 fourcc_nc = V4L2_PIX_FMT_ABGR32;
1819 case GST_VIDEO_FORMAT_GRAY8:
1820 fourcc = V4L2_PIX_FMT_GREY;
1822 case GST_VIDEO_FORMAT_GRAY16_LE:
1823 fourcc = V4L2_PIX_FMT_Y16;
1825 case GST_VIDEO_FORMAT_GRAY16_BE:
1826 fourcc = V4L2_PIX_FMT_Y16_BE;
1828 case GST_VIDEO_FORMAT_INVZ:
1829 fourcc = V4L2_PIX_FMT_INVZ;
1835 if (g_str_equal (mimetype, "video/mpegts")) {
1836 fourcc = V4L2_PIX_FMT_MPEG;
1837 } else if (g_str_equal (mimetype, "video/x-dv")) {
1838 fourcc = V4L2_PIX_FMT_DV;
1839 } else if (g_str_equal (mimetype, "image/jpeg")) {
1840 fourcc = V4L2_PIX_FMT_JPEG;
1841 } else if (g_str_equal (mimetype, "video/mpeg")) {
1843 if (gst_structure_get_int (structure, "mpegversion", &version)) {
1846 fourcc = V4L2_PIX_FMT_MPEG1;
1849 fourcc = V4L2_PIX_FMT_MPEG2;
1852 fourcc = V4L2_PIX_FMT_MPEG4;
1853 fourcc_nc = V4L2_PIX_FMT_XVID;
1859 } else if (g_str_equal (mimetype, "video/x-fwht")) {
1860 fourcc = V4L2_PIX_FMT_FWHT;
1861 } else if (g_str_equal (mimetype, "video/x-h263")) {
1862 fourcc = V4L2_PIX_FMT_H263;
1863 } else if (g_str_equal (mimetype, "video/x-h264")) {
1864 const gchar *stream_format =
1865 gst_structure_get_string (structure, "stream-format");
1866 if (g_str_equal (stream_format, "avc"))
1867 fourcc = V4L2_PIX_FMT_H264_NO_SC;
1869 fourcc = V4L2_PIX_FMT_H264;
1870 } else if (g_str_equal (mimetype, "video/x-h265")) {
1871 fourcc = V4L2_PIX_FMT_HEVC;
1872 } else if (g_str_equal (mimetype, "video/x-vp8")) {
1873 fourcc = V4L2_PIX_FMT_VP8;
1874 } else if (g_str_equal (mimetype, "video/x-vp9")) {
1875 fourcc = V4L2_PIX_FMT_VP9;
1876 } else if (g_str_equal (mimetype, "video/x-bayer")) {
1877 const gchar *format = gst_structure_get_string (structure, "format");
1879 if (!g_ascii_strcasecmp (format, "bggr"))
1880 fourcc = V4L2_PIX_FMT_SBGGR8;
1881 else if (!g_ascii_strcasecmp (format, "gbrg"))
1882 fourcc = V4L2_PIX_FMT_SGBRG8;
1883 else if (!g_ascii_strcasecmp (format, "grbg"))
1884 fourcc = V4L2_PIX_FMT_SGRBG8;
1885 else if (!g_ascii_strcasecmp (format, "rggb"))
1886 fourcc = V4L2_PIX_FMT_SRGGB8;
1888 } else if (g_str_equal (mimetype, "video/x-sonix")) {
1889 fourcc = V4L2_PIX_FMT_SN9C10X;
1890 } else if (g_str_equal (mimetype, "video/x-pwc1")) {
1891 fourcc = V4L2_PIX_FMT_PWC1;
1892 } else if (g_str_equal (mimetype, "video/x-pwc2")) {
1893 fourcc = V4L2_PIX_FMT_PWC2;
1898 /* Prefer the non-contiguous if supported */
1899 v4l2object->prefered_non_contiguous = TRUE;
1902 fmt = gst_v4l2_object_get_format_from_fourcc (v4l2object, fourcc_nc);
1903 else if (fourcc == 0)
1904 goto unhandled_format;
1907 fmt = gst_v4l2_object_get_format_from_fourcc (v4l2object, fourcc);
1908 v4l2object->prefered_non_contiguous = FALSE;
1912 goto unsupported_format;
1921 GST_DEBUG_OBJECT (v4l2object, "invalid format");
1926 GST_DEBUG_OBJECT (v4l2object, "unhandled format");
1931 GST_DEBUG_OBJECT (v4l2object, "unsupported format");
1937 gst_v4l2_object_get_nearest_size (GstV4l2Object * v4l2object,
1938 guint32 pixelformat, gint * width, gint * height);
1941 gst_v4l2_object_add_aspect_ratio (GstV4l2Object * v4l2object, GstStructure * s)
1943 if (v4l2object->keep_aspect && v4l2object->par)
1944 gst_structure_set_value (s, "pixel-aspect-ratio", v4l2object->par);
1947 /* returns TRUE if the value was changed in place, otherwise FALSE */
1949 gst_v4l2src_value_simplify (GValue * val)
1951 /* simplify list of one value to one value */
1952 if (GST_VALUE_HOLDS_LIST (val) && gst_value_list_get_size (val) == 1) {
1953 const GValue *list_val;
1954 GValue new_val = G_VALUE_INIT;
1956 list_val = gst_value_list_get_value (val, 0);
1957 g_value_init (&new_val, G_VALUE_TYPE (list_val));
1958 g_value_copy (list_val, &new_val);
1959 g_value_unset (val);
1968 gst_v4l2_object_get_interlace_mode (enum v4l2_field field,
1969 GstVideoInterlaceMode * interlace_mode)
1972 case V4L2_FIELD_ANY:
1974 ("Driver bug detected - check driver with v4l2-compliance from http://git.linuxtv.org/v4l-utils.git\n");
1976 case V4L2_FIELD_NONE:
1977 *interlace_mode = GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
1979 case V4L2_FIELD_INTERLACED:
1980 case V4L2_FIELD_INTERLACED_TB:
1981 case V4L2_FIELD_INTERLACED_BT:
1982 *interlace_mode = GST_VIDEO_INTERLACE_MODE_INTERLEAVED;
1985 GST_ERROR ("Unknown enum v4l2_field %d", field);
1991 gst_v4l2_object_get_colorspace (struct v4l2_format *fmt,
1992 GstVideoColorimetry * cinfo)
1995 gst_v4l2_object_v4l2fourcc_is_rgb (fmt->fmt.pix.pixelformat);
1996 enum v4l2_colorspace colorspace;
1997 enum v4l2_quantization range;
1998 enum v4l2_ycbcr_encoding matrix;
1999 enum v4l2_xfer_func transfer;
2000 gboolean ret = TRUE;
2002 if (V4L2_TYPE_IS_MULTIPLANAR (fmt->type)) {
2003 colorspace = fmt->fmt.pix_mp.colorspace;
2004 range = fmt->fmt.pix_mp.quantization;
2005 matrix = fmt->fmt.pix_mp.ycbcr_enc;
2006 transfer = fmt->fmt.pix_mp.xfer_func;
2008 colorspace = fmt->fmt.pix.colorspace;
2009 range = fmt->fmt.pix.quantization;
2010 matrix = fmt->fmt.pix.ycbcr_enc;
2011 transfer = fmt->fmt.pix.xfer_func;
2014 /* First step, set the defaults for each primaries */
2015 switch (colorspace) {
2016 case V4L2_COLORSPACE_SMPTE170M:
2017 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2018 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
2019 cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
2020 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_SMPTE170M;
2022 case V4L2_COLORSPACE_REC709:
2023 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2024 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT709;
2025 cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
2026 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT709;
2028 case V4L2_COLORSPACE_SRGB:
2029 case V4L2_COLORSPACE_JPEG:
2030 cinfo->range = GST_VIDEO_COLOR_RANGE_0_255;
2031 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
2032 cinfo->transfer = GST_VIDEO_TRANSFER_SRGB;
2033 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT709;
2035 case V4L2_COLORSPACE_OPRGB:
2036 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2037 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
2038 cinfo->transfer = GST_VIDEO_TRANSFER_ADOBERGB;
2039 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_ADOBERGB;
2041 case V4L2_COLORSPACE_BT2020:
2042 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2043 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT2020;
2044 cinfo->transfer = GST_VIDEO_TRANSFER_BT2020_12;
2045 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT2020;
2047 case V4L2_COLORSPACE_SMPTE240M:
2048 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2049 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_SMPTE240M;
2050 cinfo->transfer = GST_VIDEO_TRANSFER_SMPTE240M;
2051 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_SMPTE240M;
2053 case V4L2_COLORSPACE_470_SYSTEM_M:
2054 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2055 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
2056 cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
2057 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT470M;
2059 case V4L2_COLORSPACE_470_SYSTEM_BG:
2060 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2061 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
2062 cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
2063 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT470BG;
2065 case V4L2_COLORSPACE_RAW:
2066 /* Explicitly unknown */
2067 cinfo->range = GST_VIDEO_COLOR_RANGE_UNKNOWN;
2068 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_UNKNOWN;
2069 cinfo->transfer = GST_VIDEO_TRANSFER_UNKNOWN;
2070 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_UNKNOWN;
2073 GST_DEBUG ("Unknown enum v4l2_colorspace %d", colorspace);
2081 /* Second step, apply any custom variation */
2083 case V4L2_QUANTIZATION_FULL_RANGE:
2084 cinfo->range = GST_VIDEO_COLOR_RANGE_0_255;
2086 case V4L2_QUANTIZATION_LIM_RANGE:
2087 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2089 case V4L2_QUANTIZATION_DEFAULT:
2090 /* replicated V4L2_MAP_QUANTIZATION_DEFAULT macro behavior */
2091 if (is_rgb && colorspace == V4L2_COLORSPACE_BT2020)
2092 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2093 else if (is_rgb || matrix == V4L2_YCBCR_ENC_XV601
2094 || matrix == V4L2_YCBCR_ENC_XV709
2095 || colorspace == V4L2_COLORSPACE_JPEG)
2096 cinfo->range = GST_VIDEO_COLOR_RANGE_0_255;
2098 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
2101 GST_WARNING ("Unknown enum v4l2_quantization value %d", range);
2102 cinfo->range = GST_VIDEO_COLOR_RANGE_UNKNOWN;
2107 case V4L2_YCBCR_ENC_XV601:
2108 case V4L2_YCBCR_ENC_SYCC:
2109 GST_FIXME ("XV601 and SYCC not defined, assuming 601");
2111 case V4L2_YCBCR_ENC_601:
2112 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
2114 case V4L2_YCBCR_ENC_XV709:
2115 GST_FIXME ("XV709 not defined, assuming 709");
2117 case V4L2_YCBCR_ENC_709:
2118 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT709;
2120 case V4L2_YCBCR_ENC_BT2020_CONST_LUM:
2121 GST_FIXME ("BT2020 with constant luma is not defined, assuming BT2020");
2123 case V4L2_YCBCR_ENC_BT2020:
2124 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT2020;
2126 case V4L2_YCBCR_ENC_SMPTE240M:
2127 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_SMPTE240M;
2129 case V4L2_YCBCR_ENC_DEFAULT:
2130 /* nothing, just use defaults for colorspace */
2133 GST_WARNING ("Unknown enum v4l2_ycbcr_encoding value %d", matrix);
2134 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_UNKNOWN;
2138 /* Set identity matrix for R'G'B' formats to avoid creating
2139 * confusion. This though is cosmetic as it's now properly ignored by
2140 * the video info API and videoconvert. */
2142 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_RGB;
2145 case V4L2_XFER_FUNC_709:
2146 if (colorspace == V4L2_COLORSPACE_BT2020 && fmt->fmt.pix.height >= 2160)
2147 cinfo->transfer = GST_VIDEO_TRANSFER_BT2020_12;
2149 cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
2151 case V4L2_XFER_FUNC_SRGB:
2152 cinfo->transfer = GST_VIDEO_TRANSFER_SRGB;
2154 case V4L2_XFER_FUNC_OPRGB:
2155 cinfo->transfer = GST_VIDEO_TRANSFER_ADOBERGB;
2157 case V4L2_XFER_FUNC_SMPTE240M:
2158 cinfo->transfer = GST_VIDEO_TRANSFER_SMPTE240M;
2160 case V4L2_XFER_FUNC_NONE:
2161 cinfo->transfer = GST_VIDEO_TRANSFER_GAMMA10;
2163 case V4L2_XFER_FUNC_DEFAULT:
2164 /* nothing, just use defaults for colorspace */
2167 GST_WARNING ("Unknown enum v4l2_xfer_func value %d", transfer);
2168 cinfo->transfer = GST_VIDEO_TRANSFER_UNKNOWN;
2177 gst_v4l2_object_try_fmt (GstV4l2Object * v4l2object,
2178 struct v4l2_format *try_fmt)
2180 int fd = v4l2object->video_fd;
2181 struct v4l2_format fmt;
2184 memcpy (&fmt, try_fmt, sizeof (fmt));
2185 r = v4l2object->ioctl (fd, VIDIOC_TRY_FMT, &fmt);
2187 if (r < 0 && errno == ENOTTY) {
2188 /* The driver might not implement TRY_FMT, in which case we will try
2190 if (GST_V4L2_IS_ACTIVE (v4l2object))
2193 memcpy (&fmt, try_fmt, sizeof (fmt));
2194 r = v4l2object->ioctl (fd, VIDIOC_S_FMT, &fmt);
2196 memcpy (try_fmt, &fmt, sizeof (fmt));
2201 memcpy (try_fmt, &fmt, sizeof (fmt));
2202 GST_WARNING_OBJECT (v4l2object->dbg_obj,
2203 "Unable to try format: %s", g_strerror (errno));
2209 gst_v4l2_object_add_interlace_mode (GstV4l2Object * v4l2object,
2210 GstStructure * s, guint32 width, guint32 height, guint32 pixelformat)
2212 struct v4l2_format fmt;
2213 GValue interlace_formats = { 0, };
2214 enum v4l2_field formats[] = { V4L2_FIELD_NONE, V4L2_FIELD_INTERLACED };
2216 GstVideoInterlaceMode interlace_mode, prev = -1;
2218 if (!g_str_equal (gst_structure_get_name (s), "video/x-raw"))
2221 if (v4l2object->never_interlaced) {
2222 gst_structure_set (s, "interlace-mode", G_TYPE_STRING, "progressive", NULL);
2226 g_value_init (&interlace_formats, GST_TYPE_LIST);
2228 /* Try twice - once for NONE, once for INTERLACED. */
2229 for (i = 0; i < G_N_ELEMENTS (formats); i++) {
2230 memset (&fmt, 0, sizeof (fmt));
2231 fmt.type = v4l2object->type;
2232 fmt.fmt.pix.width = width;
2233 fmt.fmt.pix.height = height;
2234 fmt.fmt.pix.pixelformat = pixelformat;
2235 fmt.fmt.pix.field = formats[i];
2237 if (gst_v4l2_object_try_fmt (v4l2object, &fmt) == 0 &&
2238 gst_v4l2_object_get_interlace_mode (fmt.fmt.pix.field, &interlace_mode)
2239 && prev != interlace_mode) {
2240 GValue interlace_enum = { 0, };
2241 const gchar *mode_string;
2242 g_value_init (&interlace_enum, G_TYPE_STRING);
2243 mode_string = gst_video_interlace_mode_to_string (interlace_mode);
2244 g_value_set_string (&interlace_enum, mode_string);
2245 gst_value_list_append_and_take_value (&interlace_formats,
2247 prev = interlace_mode;
2251 if (gst_v4l2src_value_simplify (&interlace_formats)
2252 || gst_value_list_get_size (&interlace_formats) > 0)
2253 gst_structure_take_value (s, "interlace-mode", &interlace_formats);
2255 GST_WARNING_OBJECT (v4l2object, "Failed to determine interlace mode");
2261 gst_v4l2_object_fill_colorimetry_list (GValue * list,
2262 GstVideoColorimetry * cinfo)
2264 GValue colorimetry = G_VALUE_INIT;
2267 gboolean found = FALSE;
2269 g_value_init (&colorimetry, G_TYPE_STRING);
2270 g_value_take_string (&colorimetry, gst_video_colorimetry_to_string (cinfo));
2272 /* only insert if no duplicate */
2273 size = gst_value_list_get_size (list);
2274 for (i = 0; i < size; i++) {
2277 tmp = gst_value_list_get_value (list, i);
2278 if (gst_value_compare (&colorimetry, tmp) == GST_VALUE_EQUAL) {
2285 gst_value_list_append_and_take_value (list, &colorimetry);
2287 g_value_unset (&colorimetry);
2291 gst_v4l2_object_add_colorspace (GstV4l2Object * v4l2object, GstStructure * s,
2292 guint32 width, guint32 height, guint32 pixelformat)
2294 struct v4l2_format fmt;
2295 GValue list = G_VALUE_INIT;
2296 GstVideoColorimetry cinfo;
2297 enum v4l2_colorspace req_cspace;
2299 memset (&fmt, 0, sizeof (fmt));
2300 fmt.type = v4l2object->type;
2301 fmt.fmt.pix.width = width;
2302 fmt.fmt.pix.height = height;
2303 fmt.fmt.pix.pixelformat = pixelformat;
2305 g_value_init (&list, GST_TYPE_LIST);
2307 /* step 1: get device default colorspace and insert it first as
2308 * it should be the preferred one */
2309 if (gst_v4l2_object_try_fmt (v4l2object, &fmt) == 0) {
2310 if (gst_v4l2_object_get_colorspace (&fmt, &cinfo))
2311 gst_v4l2_object_fill_colorimetry_list (&list, &cinfo);
2314 /* step 2: probe all colorspace other than default
2315 * We don't probe all colorspace, range, matrix and transfer combination to
2316 * avoid ioctl flooding which could greatly increase initialization time
2317 * with low-speed devices (UVC...) */
2318 for (req_cspace = V4L2_COLORSPACE_SMPTE170M;
2319 req_cspace <= V4L2_COLORSPACE_RAW; req_cspace++) {
2320 /* V4L2_COLORSPACE_BT878 is deprecated and shall not be used, so skip */
2321 if (req_cspace == V4L2_COLORSPACE_BT878)
2324 if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type))
2325 fmt.fmt.pix_mp.colorspace = req_cspace;
2327 fmt.fmt.pix.colorspace = req_cspace;
2329 if (gst_v4l2_object_try_fmt (v4l2object, &fmt) == 0) {
2330 enum v4l2_colorspace colorspace;
2332 if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type))
2333 colorspace = fmt.fmt.pix_mp.colorspace;
2335 colorspace = fmt.fmt.pix.colorspace;
2337 if (colorspace == req_cspace) {
2338 if (gst_v4l2_object_get_colorspace (&fmt, &cinfo))
2339 gst_v4l2_object_fill_colorimetry_list (&list, &cinfo);
2344 if (gst_value_list_get_size (&list) > 0)
2345 gst_structure_take_value (s, "colorimetry", &list);
2347 g_value_unset (&list);
2352 /* The frame interval enumeration code first appeared in Linux 2.6.19. */
2353 static GstStructure *
2354 gst_v4l2_object_probe_caps_for_format_and_size (GstV4l2Object * v4l2object,
2355 guint32 pixelformat,
2356 guint32 width, guint32 height, const GstStructure * template)
2358 gint fd = v4l2object->video_fd;
2359 struct v4l2_frmivalenum ival;
2362 GValue rates = { 0, };
2364 memset (&ival, 0, sizeof (struct v4l2_frmivalenum));
2366 ival.pixel_format = pixelformat;
2368 ival.height = height;
2370 GST_LOG_OBJECT (v4l2object->dbg_obj,
2371 "get frame interval for %ux%u, %" GST_FOURCC_FORMAT, width, height,
2372 GST_FOURCC_ARGS (pixelformat));
2374 /* keep in mind that v4l2 gives us frame intervals (durations); we invert the
2375 * fraction to get framerate */
2376 if (v4l2object->ioctl (fd, VIDIOC_ENUM_FRAMEINTERVALS, &ival) < 0)
2377 goto enum_frameintervals_failed;
2379 if (ival.type == V4L2_FRMIVAL_TYPE_DISCRETE) {
2380 GValue rate = { 0, };
2382 g_value_init (&rates, GST_TYPE_LIST);
2383 g_value_init (&rate, GST_TYPE_FRACTION);
2386 num = ival.discrete.numerator;
2387 denom = ival.discrete.denominator;
2389 if (num > G_MAXINT || denom > G_MAXINT) {
2390 /* let us hope we don't get here... */
2395 GST_LOG_OBJECT (v4l2object->dbg_obj, "adding discrete framerate: %d/%d",
2398 /* swap to get the framerate */
2399 gst_value_set_fraction (&rate, denom, num);
2400 gst_value_list_append_value (&rates, &rate);
2403 } while (v4l2object->ioctl (fd, VIDIOC_ENUM_FRAMEINTERVALS, &ival) >= 0);
2404 } else if (ival.type == V4L2_FRMIVAL_TYPE_STEPWISE) {
2405 GValue min = { 0, };
2406 GValue step = { 0, };
2407 GValue max = { 0, };
2408 gboolean added = FALSE;
2409 guint32 minnum, mindenom;
2410 guint32 maxnum, maxdenom;
2412 g_value_init (&rates, GST_TYPE_LIST);
2414 g_value_init (&min, GST_TYPE_FRACTION);
2415 g_value_init (&step, GST_TYPE_FRACTION);
2416 g_value_init (&max, GST_TYPE_FRACTION);
2419 minnum = ival.stepwise.min.numerator;
2420 mindenom = ival.stepwise.min.denominator;
2421 if (minnum > G_MAXINT || mindenom > G_MAXINT) {
2425 GST_LOG_OBJECT (v4l2object->dbg_obj, "stepwise min frame interval: %d/%d",
2427 gst_value_set_fraction (&min, minnum, mindenom);
2430 maxnum = ival.stepwise.max.numerator;
2431 maxdenom = ival.stepwise.max.denominator;
2432 if (maxnum > G_MAXINT || maxdenom > G_MAXINT) {
2437 GST_LOG_OBJECT (v4l2object->dbg_obj, "stepwise max frame interval: %d/%d",
2439 gst_value_set_fraction (&max, maxnum, maxdenom);
2442 num = ival.stepwise.step.numerator;
2443 denom = ival.stepwise.step.denominator;
2444 if (num > G_MAXINT || denom > G_MAXINT) {
2449 if (num == 0 || denom == 0) {
2450 /* in this case we have a wrong fraction or no step, set the step to max
2451 * so that we only add the min value in the loop below */
2456 /* since we only have gst_value_fraction_subtract and not add, negate the
2458 GST_LOG_OBJECT (v4l2object->dbg_obj, "stepwise step frame interval: %d/%d",
2460 gst_value_set_fraction (&step, -num, denom);
2462 while (gst_value_compare (&min, &max) != GST_VALUE_GREATER_THAN) {
2463 GValue rate = { 0, };
2465 num = gst_value_get_fraction_numerator (&min);
2466 denom = gst_value_get_fraction_denominator (&min);
2467 GST_LOG_OBJECT (v4l2object->dbg_obj, "adding stepwise framerate: %d/%d",
2470 /* invert to get the framerate */
2471 g_value_init (&rate, GST_TYPE_FRACTION);
2472 gst_value_set_fraction (&rate, denom, num);
2473 gst_value_list_append_value (&rates, &rate);
2476 /* we're actually adding because step was negated above. This is because
2477 * there is no _add function... */
2478 if (!gst_value_fraction_subtract (&min, &min, &step)) {
2479 GST_WARNING_OBJECT (v4l2object->dbg_obj, "could not step fraction!");
2484 /* no range was added, leave the default range from the template */
2485 GST_WARNING_OBJECT (v4l2object->dbg_obj,
2486 "no range added, leaving default");
2487 g_value_unset (&rates);
2489 } else if (ival.type == V4L2_FRMIVAL_TYPE_CONTINUOUS) {
2490 guint32 maxnum, maxdenom;
2492 g_value_init (&rates, GST_TYPE_FRACTION_RANGE);
2494 num = ival.stepwise.min.numerator;
2495 denom = ival.stepwise.min.denominator;
2496 if (num > G_MAXINT || denom > G_MAXINT) {
2501 maxnum = ival.stepwise.max.numerator;
2502 maxdenom = ival.stepwise.max.denominator;
2503 if (maxnum > G_MAXINT || maxdenom > G_MAXINT) {
2508 GST_LOG_OBJECT (v4l2object->dbg_obj,
2509 "continuous frame interval %d/%d to %d/%d", maxdenom, maxnum, denom,
2512 gst_value_set_fraction_range_full (&rates, maxdenom, maxnum, denom, num);
2518 s = gst_structure_copy (template);
2519 gst_structure_set (s, "width", G_TYPE_INT, (gint) width,
2520 "height", G_TYPE_INT, (gint) height, NULL);
2522 gst_v4l2_object_add_aspect_ratio (v4l2object, s);
2524 if (!v4l2object->skip_try_fmt_probes) {
2525 gst_v4l2_object_add_interlace_mode (v4l2object, s, width, height,
2527 gst_v4l2_object_add_colorspace (v4l2object, s, width, height, pixelformat);
2530 if (G_IS_VALUE (&rates)) {
2531 gst_v4l2src_value_simplify (&rates);
2532 /* only change the framerate on the template when we have a valid probed new
2534 gst_structure_take_value (s, "framerate", &rates);
2535 } else if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
2536 v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
2537 gst_structure_set (s, "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT,
2543 enum_frameintervals_failed:
2545 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
2546 "Unable to enumerate intervals for %" GST_FOURCC_FORMAT "@%ux%u",
2547 GST_FOURCC_ARGS (pixelformat), width, height);
2552 /* I don't see how this is actually an error, we ignore the format then */
2553 GST_WARNING_OBJECT (v4l2object->dbg_obj,
2554 "Unknown frame interval type at %" GST_FOURCC_FORMAT "@%ux%u: %u",
2555 GST_FOURCC_ARGS (pixelformat), width, height, ival.type);
2561 sort_by_frame_size (GstStructure * s1, GstStructure * s2)
2565 gst_structure_get_int (s1, "width", &w1);
2566 gst_structure_get_int (s1, "height", &h1);
2567 gst_structure_get_int (s2, "width", &w2);
2568 gst_structure_get_int (s2, "height", &h2);
2570 /* I think it's safe to assume that this won't overflow for a while */
2571 return ((w2 * h2) - (w1 * h1));
2575 gst_v4l2_object_update_and_append (GstV4l2Object * v4l2object,
2576 guint32 format, GstCaps * caps, GstStructure * s)
2578 GstStructure *alt_s = NULL;
2580 /* Encoded stream on output buffer need to be parsed */
2581 if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
2582 v4l2object->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
2585 for (; i < GST_V4L2_FORMAT_COUNT; i++) {
2586 if (format == gst_v4l2_formats[i].format &&
2587 gst_v4l2_formats[i].flags & GST_V4L2_CODEC &&
2588 !(gst_v4l2_formats[i].flags & GST_V4L2_NO_PARSE)) {
2589 gst_structure_set (s, "parsed", G_TYPE_BOOLEAN, TRUE, NULL);
2595 if (v4l2object->has_alpha_component &&
2596 (v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
2597 v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) {
2599 case V4L2_PIX_FMT_RGB32:
2600 alt_s = gst_structure_copy (s);
2601 gst_structure_set (alt_s, "format", G_TYPE_STRING, "ARGB", NULL);
2603 case V4L2_PIX_FMT_BGR32:
2604 alt_s = gst_structure_copy (s);
2605 gst_structure_set (alt_s, "format", G_TYPE_STRING, "BGRA", NULL);
2612 gst_caps_append_structure (caps, s);
2615 gst_caps_append_structure (caps, alt_s);
2619 gst_v4l2_object_probe_caps_for_format (GstV4l2Object * v4l2object,
2620 guint32 pixelformat, const GstStructure * template)
2622 GstCaps *ret = gst_caps_new_empty ();
2624 gint fd = v4l2object->video_fd;
2625 struct v4l2_frmsizeenum size;
2626 GList *results = NULL;
2629 if (pixelformat == GST_MAKE_FOURCC ('M', 'P', 'E', 'G')) {
2630 gst_caps_append_structure (ret, gst_structure_copy (template));
2634 memset (&size, 0, sizeof (struct v4l2_frmsizeenum));
2636 size.pixel_format = pixelformat;
2638 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
2639 "Enumerating frame sizes for %" GST_FOURCC_FORMAT,
2640 GST_FOURCC_ARGS (pixelformat));
2642 if (v4l2object->ioctl (fd, VIDIOC_ENUM_FRAMESIZES, &size) < 0)
2643 goto enum_framesizes_failed;
2645 if (size.type == V4L2_FRMSIZE_TYPE_DISCRETE) {
2647 GST_LOG_OBJECT (v4l2object->dbg_obj, "got discrete frame size %dx%d",
2648 size.discrete.width, size.discrete.height);
2650 w = MIN (size.discrete.width, G_MAXINT);
2651 h = MIN (size.discrete.height, G_MAXINT);
2655 gst_v4l2_object_probe_caps_for_format_and_size (v4l2object,
2656 pixelformat, w, h, template);
2659 results = g_list_prepend (results, tmp);
2663 } while (v4l2object->ioctl (fd, VIDIOC_ENUM_FRAMESIZES, &size) >= 0);
2664 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
2665 "done iterating discrete frame sizes");
2666 } else if (size.type == V4L2_FRMSIZE_TYPE_STEPWISE) {
2667 guint32 maxw, maxh, step_w, step_h;
2669 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "we have stepwise frame sizes:");
2670 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "min width: %d",
2671 size.stepwise.min_width);
2672 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "min height: %d",
2673 size.stepwise.min_height);
2674 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "max width: %d",
2675 size.stepwise.max_width);
2676 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "min height: %d",
2677 size.stepwise.max_height);
2678 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "step width: %d",
2679 size.stepwise.step_width);
2680 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "step height: %d",
2681 size.stepwise.step_height);
2683 w = MAX (size.stepwise.min_width, 1);
2684 h = MAX (size.stepwise.min_height, 1);
2685 maxw = MIN (size.stepwise.max_width, G_MAXINT);
2686 maxh = MIN (size.stepwise.max_height, G_MAXINT);
2688 step_w = MAX (size.stepwise.step_width, 1);
2689 step_h = MAX (size.stepwise.step_height, 1);
2691 /* FIXME: check for sanity and that min/max are multiples of the steps */
2693 /* we only query details for the max width/height since it's likely the
2694 * most restricted if there are any resolution-dependent restrictions */
2695 tmp = gst_v4l2_object_probe_caps_for_format_and_size (v4l2object,
2696 pixelformat, maxw, maxh, template);
2699 GValue step_range = G_VALUE_INIT;
2701 g_value_init (&step_range, GST_TYPE_INT_RANGE);
2702 gst_value_set_int_range_step (&step_range, w, maxw, step_w);
2703 gst_structure_set_value (tmp, "width", &step_range);
2705 gst_value_set_int_range_step (&step_range, h, maxh, step_h);
2706 gst_structure_take_value (tmp, "height", &step_range);
2708 /* no point using the results list here, since there's only one struct */
2709 gst_v4l2_object_update_and_append (v4l2object, pixelformat, ret, tmp);
2711 } else if (size.type == V4L2_FRMSIZE_TYPE_CONTINUOUS) {
2714 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "we have continuous frame sizes:");
2715 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "min width: %d",
2716 size.stepwise.min_width);
2717 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "min height: %d",
2718 size.stepwise.min_height);
2719 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "max width: %d",
2720 size.stepwise.max_width);
2721 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "min height: %d",
2722 size.stepwise.max_height);
2724 w = MAX (size.stepwise.min_width, 1);
2725 h = MAX (size.stepwise.min_height, 1);
2726 maxw = MIN (size.stepwise.max_width, G_MAXINT);
2727 maxh = MIN (size.stepwise.max_height, G_MAXINT);
2730 gst_v4l2_object_probe_caps_for_format_and_size (v4l2object, pixelformat,
2733 gst_structure_set (tmp, "width", GST_TYPE_INT_RANGE, (gint) w,
2734 (gint) maxw, "height", GST_TYPE_INT_RANGE, (gint) h, (gint) maxh,
2737 /* no point using the results list here, since there's only one struct */
2738 gst_v4l2_object_update_and_append (v4l2object, pixelformat, ret, tmp);
2744 /* we use an intermediary list to store and then sort the results of the
2745 * probing because we can't make any assumptions about the order in which
2746 * the driver will give us the sizes, but we want the final caps to contain
2747 * the results starting with the highest resolution and having the lowest
2748 * resolution last, since order in caps matters for things like fixation. */
2749 results = g_list_sort (results, (GCompareFunc) sort_by_frame_size);
2750 while (results != NULL) {
2751 gst_v4l2_object_update_and_append (v4l2object, pixelformat, ret,
2753 results = g_list_delete_link (results, results);
2756 if (gst_caps_is_empty (ret))
2757 goto enum_framesizes_no_results;
2762 enum_framesizes_failed:
2764 /* I don't see how this is actually an error */
2765 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
2766 "Failed to enumerate frame sizes for pixelformat %" GST_FOURCC_FORMAT
2767 " (%s)", GST_FOURCC_ARGS (pixelformat), g_strerror (errno));
2768 goto default_frame_sizes;
2770 enum_framesizes_no_results:
2772 /* it's possible that VIDIOC_ENUM_FRAMESIZES is defined but the driver in
2773 * question doesn't actually support it yet */
2774 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
2775 "No results for pixelformat %" GST_FOURCC_FORMAT
2776 " enumerating frame sizes, trying fallback",
2777 GST_FOURCC_ARGS (pixelformat));
2778 goto default_frame_sizes;
2782 GST_WARNING_OBJECT (v4l2object->dbg_obj,
2783 "Unknown frame sizeenum type for pixelformat %" GST_FOURCC_FORMAT
2784 ": %u", GST_FOURCC_ARGS (pixelformat), size.type);
2785 goto default_frame_sizes;
2788 default_frame_sizes:
2790 gint min_w, max_w, min_h, max_h, fix_num = 0, fix_denom = 0;
2792 /* This code is for Linux < 2.6.19 */
2794 max_w = max_h = GST_V4L2_MAX_SIZE;
2795 if (!gst_v4l2_object_get_nearest_size (v4l2object, pixelformat, &min_w,
2797 GST_WARNING_OBJECT (v4l2object->dbg_obj,
2798 "Could not probe minimum capture size for pixelformat %"
2799 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (pixelformat));
2801 if (!gst_v4l2_object_get_nearest_size (v4l2object, pixelformat, &max_w,
2803 GST_WARNING_OBJECT (v4l2object->dbg_obj,
2804 "Could not probe maximum capture size for pixelformat %"
2805 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (pixelformat));
2808 /* Since we can't get framerate directly, try to use the current norm */
2809 if (v4l2object->tv_norm && v4l2object->norms) {
2811 GstTunerNorm *norm = NULL;
2812 GstTunerNorm *current =
2813 gst_v4l2_tuner_get_norm_by_std_id (v4l2object, v4l2object->tv_norm);
2815 for (norms = v4l2object->norms; norms != NULL; norms = norms->next) {
2816 norm = (GstTunerNorm *) norms->data;
2817 if (!strcmp (norm->label, current->label))
2820 /* If it's possible, set framerate to that (discrete) value */
2822 fix_num = gst_value_get_fraction_numerator (&norm->framerate);
2823 fix_denom = gst_value_get_fraction_denominator (&norm->framerate);
2827 tmp = gst_structure_copy (template);
2829 gst_structure_set (tmp, "framerate", GST_TYPE_FRACTION, fix_num,
2831 } else if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
2832 v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
2833 /* if norm can't be used, copy the template framerate */
2834 gst_structure_set (tmp, "framerate", GST_TYPE_FRACTION_RANGE, 0, 1,
2839 gst_structure_set (tmp, "width", G_TYPE_INT, max_w, NULL);
2841 gst_structure_set (tmp, "width", GST_TYPE_INT_RANGE, min_w, max_w, NULL);
2844 gst_structure_set (tmp, "height", G_TYPE_INT, max_h, NULL);
2846 gst_structure_set (tmp, "height", GST_TYPE_INT_RANGE, min_h, max_h, NULL);
2848 gst_v4l2_object_add_aspect_ratio (v4l2object, tmp);
2850 if (!v4l2object->skip_try_fmt_probes) {
2851 /* We could consider setting interlace mode from min and max. */
2852 gst_v4l2_object_add_interlace_mode (v4l2object, tmp, max_w, max_h,
2854 /* We could consider to check colorspace for min too, in case it depends on
2855 * the size. But in this case, min and max could not be enough */
2856 gst_v4l2_object_add_colorspace (v4l2object, tmp, max_w, max_h,
2860 gst_v4l2_object_update_and_append (v4l2object, pixelformat, ret, tmp);
2866 gst_v4l2_object_get_nearest_size (GstV4l2Object * v4l2object,
2867 guint32 pixelformat, gint * width, gint * height)
2869 struct v4l2_format fmt;
2870 gboolean ret = FALSE;
2871 GstVideoInterlaceMode interlace_mode;
2873 g_return_val_if_fail (width != NULL, FALSE);
2874 g_return_val_if_fail (height != NULL, FALSE);
2876 GST_LOG_OBJECT (v4l2object->dbg_obj,
2877 "getting nearest size to %dx%d with format %" GST_FOURCC_FORMAT,
2878 *width, *height, GST_FOURCC_ARGS (pixelformat));
2880 memset (&fmt, 0, sizeof (struct v4l2_format));
2882 /* get size delimiters */
2883 memset (&fmt, 0, sizeof (fmt));
2884 fmt.type = v4l2object->type;
2885 fmt.fmt.pix.width = *width;
2886 fmt.fmt.pix.height = *height;
2887 fmt.fmt.pix.pixelformat = pixelformat;
2888 fmt.fmt.pix.field = V4L2_FIELD_ANY;
2890 if (gst_v4l2_object_try_fmt (v4l2object, &fmt) < 0)
2893 GST_LOG_OBJECT (v4l2object->dbg_obj,
2894 "got nearest size %dx%d", fmt.fmt.pix.width, fmt.fmt.pix.height);
2896 *width = fmt.fmt.pix.width;
2897 *height = fmt.fmt.pix.height;
2899 if (!gst_v4l2_object_get_interlace_mode (fmt.fmt.pix.field, &interlace_mode)) {
2900 GST_WARNING_OBJECT (v4l2object->dbg_obj,
2901 "Unsupported field type for %" GST_FOURCC_FORMAT "@%ux%u: %u",
2902 GST_FOURCC_ARGS (pixelformat), *width, *height, fmt.fmt.pix.field);
2910 GST_WARNING_OBJECT (v4l2object->dbg_obj,
2911 "Unable to try format: %s", g_strerror (errno));
2918 gst_v4l2_object_is_dmabuf_supported (GstV4l2Object * v4l2object)
2920 gboolean ret = TRUE;
2921 struct v4l2_exportbuffer expbuf = {
2922 .type = v4l2object->type,
2925 .flags = O_CLOEXEC | O_RDWR,
2928 if (v4l2object->fmtdesc->flags & V4L2_FMT_FLAG_EMULATED) {
2929 GST_WARNING_OBJECT (v4l2object->dbg_obj,
2930 "libv4l2 converter detected, disabling DMABuf");
2934 /* Expected to fail, but ENOTTY tells us that it is not implemented. */
2935 v4l2object->ioctl (v4l2object->video_fd, VIDIOC_EXPBUF, &expbuf);
2936 if (errno == ENOTTY)
2943 gst_v4l2_object_setup_pool (GstV4l2Object * v4l2object, GstCaps * caps)
2947 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "initializing the %s system",
2948 V4L2_TYPE_IS_OUTPUT (v4l2object->type) ? "output" : "capture");
2950 GST_V4L2_CHECK_OPEN (v4l2object);
2951 GST_V4L2_CHECK_NOT_ACTIVE (v4l2object);
2953 /* find transport */
2954 mode = v4l2object->req_mode;
2956 if (v4l2object->device_caps & V4L2_CAP_READWRITE) {
2957 if (v4l2object->req_mode == GST_V4L2_IO_AUTO)
2958 mode = GST_V4L2_IO_RW;
2959 } else if (v4l2object->req_mode == GST_V4L2_IO_RW)
2960 goto method_not_supported;
2962 if (v4l2object->device_caps & V4L2_CAP_STREAMING) {
2963 if (v4l2object->req_mode == GST_V4L2_IO_AUTO) {
2964 if (!V4L2_TYPE_IS_OUTPUT (v4l2object->type) &&
2965 gst_v4l2_object_is_dmabuf_supported (v4l2object)) {
2966 mode = GST_V4L2_IO_DMABUF;
2968 mode = GST_V4L2_IO_MMAP;
2971 } else if (v4l2object->req_mode == GST_V4L2_IO_MMAP ||
2972 v4l2object->req_mode == GST_V4L2_IO_DMABUF)
2973 goto method_not_supported;
2975 /* if still no transport selected, error out */
2976 if (mode == GST_V4L2_IO_AUTO)
2977 goto no_supported_capture_method;
2979 GST_INFO_OBJECT (v4l2object->dbg_obj, "accessing buffers via mode %d", mode);
2980 v4l2object->mode = mode;
2982 /* If min_buffers is not set, the driver either does not support the control or
2983 it has not been asked yet via propose_allocation/decide_allocation. */
2984 if (!v4l2object->min_buffers)
2985 gst_v4l2_get_driver_min_buffers (v4l2object);
2987 /* Map the buffers */
2988 GST_LOG_OBJECT (v4l2object->dbg_obj, "initiating buffer pool");
2990 if (!(v4l2object->pool = gst_v4l2_buffer_pool_new (v4l2object, caps)))
2991 goto buffer_pool_new_failed;
2993 GST_V4L2_SET_ACTIVE (v4l2object);
2998 buffer_pool_new_failed:
3000 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, READ,
3001 (_("Could not map buffers from device '%s'"),
3002 v4l2object->videodev),
3003 ("Failed to create buffer pool: %s", g_strerror (errno)));
3006 method_not_supported:
3008 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, READ,
3009 (_("The driver of device '%s' does not support the IO method %d"),
3010 v4l2object->videodev, mode), (NULL));
3013 no_supported_capture_method:
3015 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, READ,
3016 (_("The driver of device '%s' does not support any known IO "
3017 "method."), v4l2object->videodev), (NULL));
3023 gst_v4l2_object_set_stride (GstVideoInfo * info, GstVideoAlignment * align,
3024 gint plane, gint stride)
3026 const GstVideoFormatInfo *finfo = info->finfo;
3028 if (GST_VIDEO_FORMAT_INFO_IS_TILED (finfo)) {
3029 gint x_tiles, y_tiles, ws, hs, tile_height, padded_height;
3032 ws = GST_VIDEO_FORMAT_INFO_TILE_WS (finfo);
3033 hs = GST_VIDEO_FORMAT_INFO_TILE_HS (finfo);
3034 tile_height = 1 << hs;
3036 padded_height = GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT (finfo, plane,
3037 info->height + align->padding_top + align->padding_bottom);
3038 padded_height = GST_ROUND_UP_N (padded_height, tile_height);
3040 x_tiles = stride >> ws;
3041 y_tiles = padded_height >> hs;
3042 info->stride[plane] = GST_VIDEO_TILE_MAKE_STRIDE (x_tiles, y_tiles);
3044 info->stride[plane] = stride;
3049 gst_v4l2_object_extrapolate_info (GstV4l2Object * v4l2object,
3050 GstVideoInfo * info, GstVideoAlignment * align, gint stride)
3052 const GstVideoFormatInfo *finfo = info->finfo;
3053 gint i, estride, padded_height;
3056 g_return_if_fail (v4l2object->n_v4l2_planes == 1);
3058 padded_height = info->height + align->padding_top + align->padding_bottom;
3060 for (i = 0; i < finfo->n_planes; i++) {
3061 estride = gst_v4l2_object_extrapolate_stride (finfo, i, stride);
3063 gst_v4l2_object_set_stride (info, align, i, estride);
3065 info->offset[i] = offs;
3067 GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT (finfo, i, padded_height);
3069 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
3070 "Extrapolated for plane %d with base stride %d: "
3071 "stride %d, offset %" G_GSIZE_FORMAT, i, stride, info->stride[i],
3075 /* Update the image size according the amount of data we are going to
3076 * read/write. This workaround bugs in driver where the sizeimage provided
3077 * by TRY/S_FMT represent the buffer length (maximum size) rather then the expected
3078 * bytesused (buffer size). */
3079 if (offs < info->size)
3084 gst_v4l2_object_save_format (GstV4l2Object * v4l2object,
3085 struct v4l2_fmtdesc *fmtdesc, struct v4l2_format *format,
3086 GstVideoInfo * info, GstVideoAlignment * align)
3088 const GstVideoFormatInfo *finfo = info->finfo;
3089 gboolean standard_stride = TRUE;
3090 gint stride, pstride, padded_width, padded_height, i;
3092 if (GST_VIDEO_INFO_FORMAT (info) == GST_VIDEO_FORMAT_ENCODED) {
3093 v4l2object->n_v4l2_planes = 1;
3094 info->size = format->fmt.pix.sizeimage;
3098 /* adjust right padding */
3099 if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type))
3100 stride = format->fmt.pix_mp.plane_fmt[0].bytesperline;
3102 stride = format->fmt.pix.bytesperline;
3104 pstride = GST_VIDEO_FORMAT_INFO_PSTRIDE (finfo, 0);
3106 padded_width = stride / pstride;
3108 /* pstride can be 0 for complex formats */
3109 GST_WARNING_OBJECT (v4l2object->element,
3110 "format %s has a pstride of 0, cannot compute padded with",
3111 gst_video_format_to_string (GST_VIDEO_INFO_FORMAT (info)));
3112 padded_width = stride;
3115 if (padded_width < format->fmt.pix.width)
3116 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3117 "Driver bug detected, stride (%d) is too small for the width (%d)",
3118 padded_width, format->fmt.pix.width);
3120 align->padding_right = padded_width - info->width - align->padding_left;
3122 /* adjust bottom padding */
3123 padded_height = format->fmt.pix.height;
3125 if (GST_VIDEO_FORMAT_INFO_IS_TILED (finfo)) {
3126 guint hs, tile_height;
3128 hs = GST_VIDEO_FORMAT_INFO_TILE_HS (finfo);
3129 tile_height = 1 << hs;
3131 padded_height = GST_ROUND_UP_N (padded_height, tile_height);
3134 align->padding_bottom = padded_height - info->height - align->padding_top;
3136 /* setup the strides and offset */
3137 if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type)) {
3138 struct v4l2_pix_format_mplane *pix_mp = &format->fmt.pix_mp;
3140 /* figure out the frame layout */
3141 v4l2object->n_v4l2_planes = MAX (1, pix_mp->num_planes);
3143 for (i = 0; i < v4l2object->n_v4l2_planes; i++) {
3144 stride = pix_mp->plane_fmt[i].bytesperline;
3146 if (info->stride[i] != stride)
3147 standard_stride = FALSE;
3149 gst_v4l2_object_set_stride (info, align, i, stride);
3150 info->offset[i] = info->size;
3151 info->size += pix_mp->plane_fmt[i].sizeimage;
3154 /* Extrapolate stride if planar format are being set in 1 v4l2 plane */
3155 if (v4l2object->n_v4l2_planes < finfo->n_planes) {
3156 stride = format->fmt.pix_mp.plane_fmt[0].bytesperline;
3157 gst_v4l2_object_extrapolate_info (v4l2object, info, align, stride);
3160 /* only one plane in non-MPLANE mode */
3161 v4l2object->n_v4l2_planes = 1;
3162 info->size = format->fmt.pix.sizeimage;
3163 stride = format->fmt.pix.bytesperline;
3165 if (info->stride[0] != stride)
3166 standard_stride = FALSE;
3168 gst_v4l2_object_extrapolate_info (v4l2object, info, align, stride);
3171 /* adjust the offset to take into account left and top */
3172 if (GST_VIDEO_FORMAT_INFO_IS_TILED (finfo)) {
3173 if ((align->padding_left + align->padding_top) > 0)
3174 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3175 "Left and top padding is not permitted for tiled formats");
3177 for (i = 0; i < finfo->n_planes; i++) {
3180 /* FIXME we assume plane as component as this is true for all supported
3181 * format we support. */
3183 hedge = GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (finfo, i, align->padding_left);
3184 vedge = GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT (finfo, i, align->padding_top);
3186 info->offset[i] += (vedge * info->stride[i]) +
3187 (hedge * GST_VIDEO_INFO_COMP_PSTRIDE (info, i));
3192 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Got sizeimage %" G_GSIZE_FORMAT,
3195 /* to avoid copies we need video meta if there is padding */
3196 v4l2object->need_video_meta =
3197 ((align->padding_top + align->padding_left + align->padding_right +
3198 align->padding_bottom) != 0);
3200 /* ... or if stride is non "standard" */
3201 if (!standard_stride)
3202 v4l2object->need_video_meta = TRUE;
3204 /* ... or also video meta if we use multiple, non-contiguous, planes */
3205 if (v4l2object->n_v4l2_planes > 1)
3206 v4l2object->need_video_meta = TRUE;
3208 v4l2object->info = *info;
3209 v4l2object->align = *align;
3210 v4l2object->format = *format;
3211 v4l2object->fmtdesc = fmtdesc;
3213 /* if we have a framerate pre-calculate duration */
3214 if (info->fps_n > 0 && info->fps_d > 0) {
3215 v4l2object->duration = gst_util_uint64_scale_int (GST_SECOND, info->fps_d,
3218 v4l2object->duration = GST_CLOCK_TIME_NONE;
3223 gst_v4l2_object_extrapolate_stride (const GstVideoFormatInfo * finfo,
3224 gint plane, gint stride)
3228 switch (finfo->format) {
3229 case GST_VIDEO_FORMAT_NV12:
3230 case GST_VIDEO_FORMAT_NV12_64Z32:
3231 case GST_VIDEO_FORMAT_NV21:
3232 case GST_VIDEO_FORMAT_NV16:
3233 case GST_VIDEO_FORMAT_NV61:
3234 case GST_VIDEO_FORMAT_NV24:
3235 estride = (plane == 0 ? 1 : 2) *
3236 GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (finfo, plane, stride);
3239 estride = GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (finfo, plane, stride);
3247 gst_v4l2_video_colorimetry_matches (const GstVideoColorimetry * cinfo,
3248 const gchar * color)
3250 GstVideoColorimetry ci;
3251 static const GstVideoColorimetry ci_likely_jpeg = {
3252 GST_VIDEO_COLOR_RANGE_0_255, GST_VIDEO_COLOR_MATRIX_BT601,
3253 GST_VIDEO_TRANSFER_UNKNOWN, GST_VIDEO_COLOR_PRIMARIES_UNKNOWN
3255 static const GstVideoColorimetry ci_jpeg = {
3256 GST_VIDEO_COLOR_RANGE_0_255, GST_VIDEO_COLOR_MATRIX_BT601,
3257 GST_VIDEO_TRANSFER_SRGB, GST_VIDEO_COLOR_PRIMARIES_BT709
3260 if (!gst_video_colorimetry_from_string (&ci, color))
3263 if (gst_video_colorimetry_is_equal (&ci, cinfo))
3266 /* Allow 1:4:0:0 (produced by jpegdec) if the device expects 1:4:7:1 */
3267 if (gst_video_colorimetry_is_equal (&ci, &ci_likely_jpeg)
3268 && gst_video_colorimetry_is_equal (cinfo, &ci_jpeg))
3275 gst_v4l2_object_set_format_full (GstV4l2Object * v4l2object, GstCaps * caps,
3276 gboolean try_only, GstV4l2Error * error)
3278 gint fd = v4l2object->video_fd;
3279 struct v4l2_format format;
3280 struct v4l2_streamparm streamparm;
3281 enum v4l2_field field;
3282 guint32 pixelformat;
3283 struct v4l2_fmtdesc *fmtdesc;
3285 GstVideoAlignment align;
3286 gint width, height, fps_n, fps_d;
3290 enum v4l2_colorspace colorspace = 0;
3291 enum v4l2_quantization range = 0;
3292 enum v4l2_ycbcr_encoding matrix = 0;
3293 enum v4l2_xfer_func transfer = 0;
3295 gboolean disable_colorimetry = FALSE;
3297 g_return_val_if_fail (!v4l2object->skip_try_fmt_probes ||
3298 gst_caps_is_writable (caps), FALSE);
3300 GST_V4L2_CHECK_OPEN (v4l2object);
3302 GST_V4L2_CHECK_NOT_ACTIVE (v4l2object);
3304 is_mplane = V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type);
3306 gst_video_info_init (&info);
3307 gst_video_alignment_reset (&align);
3309 if (!gst_v4l2_object_get_caps_info (v4l2object, caps, &fmtdesc, &info))
3312 pixelformat = fmtdesc->pixelformat;
3313 width = GST_VIDEO_INFO_WIDTH (&info);
3314 height = GST_VIDEO_INFO_HEIGHT (&info);
3315 fps_n = GST_VIDEO_INFO_FPS_N (&info);
3316 fps_d = GST_VIDEO_INFO_FPS_D (&info);
3318 /* if encoded format (GST_VIDEO_INFO_N_PLANES return 0)
3319 * or if contiguous is prefered */
3320 n_v4l_planes = GST_VIDEO_INFO_N_PLANES (&info);
3321 if (!n_v4l_planes || !v4l2object->prefered_non_contiguous)
3324 if (GST_VIDEO_INFO_IS_INTERLACED (&info)) {
3325 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "interlaced video");
3326 /* ideally we would differentiate between types of interlaced video
3327 * but there is not sufficient information in the caps..
3329 field = V4L2_FIELD_INTERLACED;
3331 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "progressive video");
3332 field = V4L2_FIELD_NONE;
3335 /* We first pick the main colorspace from the primaries */
3336 switch (info.colorimetry.primaries) {
3337 case GST_VIDEO_COLOR_PRIMARIES_BT709:
3338 /* There is two colorspaces using these primaries, use the range to
3340 if (info.colorimetry.range == GST_VIDEO_COLOR_RANGE_16_235)
3341 colorspace = V4L2_COLORSPACE_REC709;
3343 colorspace = V4L2_COLORSPACE_SRGB;
3345 case GST_VIDEO_COLOR_PRIMARIES_BT2020:
3346 colorspace = V4L2_COLORSPACE_BT2020;
3348 case GST_VIDEO_COLOR_PRIMARIES_BT470M:
3349 colorspace = V4L2_COLORSPACE_470_SYSTEM_M;
3351 case GST_VIDEO_COLOR_PRIMARIES_BT470BG:
3352 colorspace = V4L2_COLORSPACE_470_SYSTEM_BG;
3354 case GST_VIDEO_COLOR_PRIMARIES_SMPTE170M:
3355 colorspace = V4L2_COLORSPACE_SMPTE170M;
3357 case GST_VIDEO_COLOR_PRIMARIES_SMPTE240M:
3358 colorspace = V4L2_COLORSPACE_SMPTE240M;
3361 case GST_VIDEO_COLOR_PRIMARIES_FILM:
3362 case GST_VIDEO_COLOR_PRIMARIES_UNKNOWN:
3363 /* We don't know, we will guess */
3367 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3368 "Unknown colorimetry primaries %d", info.colorimetry.primaries);
3372 switch (info.colorimetry.range) {
3373 case GST_VIDEO_COLOR_RANGE_0_255:
3374 range = V4L2_QUANTIZATION_FULL_RANGE;
3376 case GST_VIDEO_COLOR_RANGE_16_235:
3377 range = V4L2_QUANTIZATION_LIM_RANGE;
3379 case GST_VIDEO_COLOR_RANGE_UNKNOWN:
3380 /* We let the driver pick a default one */
3383 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3384 "Unknown colorimetry range %d", info.colorimetry.range);
3388 switch (info.colorimetry.matrix) {
3389 case GST_VIDEO_COLOR_MATRIX_RGB:
3390 /* Unspecified, leave to default */
3392 /* FCC is about the same as BT601 with less digit */
3393 case GST_VIDEO_COLOR_MATRIX_FCC:
3394 case GST_VIDEO_COLOR_MATRIX_BT601:
3395 matrix = V4L2_YCBCR_ENC_601;
3397 case GST_VIDEO_COLOR_MATRIX_BT709:
3398 matrix = V4L2_YCBCR_ENC_709;
3400 case GST_VIDEO_COLOR_MATRIX_SMPTE240M:
3401 matrix = V4L2_YCBCR_ENC_SMPTE240M;
3403 case GST_VIDEO_COLOR_MATRIX_BT2020:
3404 matrix = V4L2_YCBCR_ENC_BT2020;
3406 case GST_VIDEO_COLOR_MATRIX_UNKNOWN:
3407 /* We let the driver pick a default one */
3410 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3411 "Unknown colorimetry matrix %d", info.colorimetry.matrix);
3415 switch (info.colorimetry.transfer) {
3416 case GST_VIDEO_TRANSFER_GAMMA18:
3417 case GST_VIDEO_TRANSFER_GAMMA20:
3418 case GST_VIDEO_TRANSFER_GAMMA22:
3419 case GST_VIDEO_TRANSFER_GAMMA28:
3420 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3421 "GAMMA 18, 20, 22, 28 transfer functions not supported");
3423 case GST_VIDEO_TRANSFER_GAMMA10:
3424 transfer = V4L2_XFER_FUNC_NONE;
3426 case GST_VIDEO_TRANSFER_BT2020_12:
3427 case GST_VIDEO_TRANSFER_BT709:
3428 transfer = V4L2_XFER_FUNC_709;
3430 case GST_VIDEO_TRANSFER_SMPTE240M:
3431 transfer = V4L2_XFER_FUNC_SMPTE240M;
3433 case GST_VIDEO_TRANSFER_SRGB:
3434 transfer = V4L2_XFER_FUNC_SRGB;
3436 case GST_VIDEO_TRANSFER_LOG100:
3437 case GST_VIDEO_TRANSFER_LOG316:
3438 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3439 "LOG 100, 316 transfer functions not supported");
3440 /* FIXME No known sensible default, maybe AdobeRGB ? */
3442 case GST_VIDEO_TRANSFER_UNKNOWN:
3443 /* We let the driver pick a default one */
3446 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3447 "Unknown colorimetry tranfer %d", info.colorimetry.transfer);
3451 if (colorspace == 0) {
3452 /* Try to guess colorspace according to pixelformat and size */
3453 if (GST_VIDEO_INFO_IS_YUV (&info)) {
3454 if (range == V4L2_QUANTIZATION_FULL_RANGE
3455 && matrix == V4L2_YCBCR_ENC_601 && transfer == 0) {
3456 /* Full range BT.601 YCbCr encoding with unknown primaries and transfer
3457 * function most likely is JPEG */
3458 colorspace = V4L2_COLORSPACE_JPEG;
3459 transfer = V4L2_XFER_FUNC_SRGB;
3461 /* SD streams likely use SMPTE170M and HD streams REC709 */
3462 if (width <= 720 && height <= 576)
3463 colorspace = V4L2_COLORSPACE_SMPTE170M;
3465 colorspace = V4L2_COLORSPACE_REC709;
3467 } else if (GST_VIDEO_INFO_IS_RGB (&info)) {
3468 colorspace = V4L2_COLORSPACE_SRGB;
3469 transfer = V4L2_XFER_FUNC_NONE;
3473 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Desired format %dx%d, format "
3474 "%" GST_FOURCC_FORMAT " stride: %d", width, height,
3475 GST_FOURCC_ARGS (pixelformat), GST_VIDEO_INFO_PLANE_STRIDE (&info, 0));
3477 memset (&format, 0x00, sizeof (struct v4l2_format));
3478 format.type = v4l2object->type;
3481 format.type = v4l2object->type;
3482 format.fmt.pix_mp.pixelformat = pixelformat;
3483 format.fmt.pix_mp.width = width;
3484 format.fmt.pix_mp.height = height;
3485 format.fmt.pix_mp.field = field;
3486 format.fmt.pix_mp.num_planes = n_v4l_planes;
3488 /* try to ask our prefered stride but it's not a failure if not
3490 for (i = 0; i < n_v4l_planes; i++) {
3491 gint stride = GST_VIDEO_INFO_PLANE_STRIDE (&info, i);
3493 if (GST_VIDEO_FORMAT_INFO_IS_TILED (info.finfo))
3494 stride = GST_VIDEO_TILE_X_TILES (stride) <<
3495 GST_VIDEO_FORMAT_INFO_TILE_WS (info.finfo);
3497 format.fmt.pix_mp.plane_fmt[i].bytesperline = stride;
3500 if (GST_VIDEO_INFO_FORMAT (&info) == GST_VIDEO_FORMAT_ENCODED)
3501 format.fmt.pix_mp.plane_fmt[0].sizeimage = ENCODED_BUFFER_SIZE;
3503 gint stride = GST_VIDEO_INFO_PLANE_STRIDE (&info, 0);
3505 format.type = v4l2object->type;
3507 format.fmt.pix.width = width;
3508 format.fmt.pix.height = height;
3509 format.fmt.pix.pixelformat = pixelformat;
3510 format.fmt.pix.field = field;
3512 if (GST_VIDEO_FORMAT_INFO_IS_TILED (info.finfo))
3513 stride = GST_VIDEO_TILE_X_TILES (stride) <<
3514 GST_VIDEO_FORMAT_INFO_TILE_WS (info.finfo);
3516 /* try to ask our prefered stride */
3517 format.fmt.pix.bytesperline = stride;
3519 if (GST_VIDEO_INFO_FORMAT (&info) == GST_VIDEO_FORMAT_ENCODED)
3520 format.fmt.pix.sizeimage = ENCODED_BUFFER_SIZE;
3523 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Desired format is %dx%d, format "
3524 "%" GST_FOURCC_FORMAT ", nb planes %d", format.fmt.pix.width,
3525 format.fmt.pix_mp.height,
3526 GST_FOURCC_ARGS (format.fmt.pix.pixelformat),
3527 is_mplane ? format.fmt.pix_mp.num_planes : 1);
3529 #ifndef GST_DISABLE_GST_DEBUG
3531 for (i = 0; i < format.fmt.pix_mp.num_planes; i++)
3532 GST_DEBUG_OBJECT (v4l2object->dbg_obj, " stride %d",
3533 format.fmt.pix_mp.plane_fmt[i].bytesperline);
3535 GST_DEBUG_OBJECT (v4l2object->dbg_obj, " stride %d",
3536 format.fmt.pix.bytesperline);
3541 format.fmt.pix_mp.colorspace = colorspace;
3542 format.fmt.pix_mp.quantization = range;
3543 format.fmt.pix_mp.ycbcr_enc = matrix;
3544 format.fmt.pix_mp.xfer_func = transfer;
3546 format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
3547 format.fmt.pix.colorspace = colorspace;
3548 format.fmt.pix.quantization = range;
3549 format.fmt.pix.ycbcr_enc = matrix;
3550 format.fmt.pix.xfer_func = transfer;
3553 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Desired colorspace is %d:%d:%d:%d",
3554 colorspace, range, matrix, transfer);
3557 if (v4l2object->ioctl (fd, VIDIOC_TRY_FMT, &format) < 0)
3558 goto try_fmt_failed;
3560 if (v4l2object->ioctl (fd, VIDIOC_S_FMT, &format) < 0)
3561 goto set_fmt_failed;
3565 colorspace = format.fmt.pix_mp.colorspace;
3566 range = format.fmt.pix_mp.quantization;
3567 matrix = format.fmt.pix_mp.ycbcr_enc;
3568 transfer = format.fmt.pix_mp.xfer_func;
3570 colorspace = format.fmt.pix.colorspace;
3571 range = format.fmt.pix.quantization;
3572 matrix = format.fmt.pix.ycbcr_enc;
3573 transfer = format.fmt.pix.xfer_func;
3576 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Got format of %dx%d, format "
3577 "%" GST_FOURCC_FORMAT ", nb planes %d, colorspace %d:%d:%d:%d",
3578 format.fmt.pix.width, format.fmt.pix_mp.height,
3579 GST_FOURCC_ARGS (format.fmt.pix.pixelformat),
3580 is_mplane ? format.fmt.pix_mp.num_planes : 1,
3581 colorspace, range, matrix, transfer);
3583 #ifndef GST_DISABLE_GST_DEBUG
3585 for (i = 0; i < format.fmt.pix_mp.num_planes; i++)
3586 GST_DEBUG_OBJECT (v4l2object->dbg_obj, " stride %d, sizeimage %d",
3587 format.fmt.pix_mp.plane_fmt[i].bytesperline,
3588 format.fmt.pix_mp.plane_fmt[i].sizeimage);
3590 GST_DEBUG_OBJECT (v4l2object->dbg_obj, " stride %d, sizeimage %d",
3591 format.fmt.pix.bytesperline, format.fmt.pix.sizeimage);
3595 if (format.fmt.pix.pixelformat != pixelformat)
3596 goto invalid_pixelformat;
3598 /* Only negotiate size with raw data.
3599 * For some codecs the dimensions are *not* in the bitstream, IIRC VC1
3600 * in ASF mode for example, there is also not reason for a driver to
3601 * change the size. */
3602 if (info.finfo->format != GST_VIDEO_FORMAT_ENCODED) {
3603 /* We can crop larger images */
3604 if (format.fmt.pix.width < width || format.fmt.pix.height < height)
3605 goto invalid_dimensions;
3607 /* Note, this will be adjusted if upstream has non-centered cropping. */
3608 align.padding_top = 0;
3609 align.padding_bottom = format.fmt.pix.height - height;
3610 align.padding_left = 0;
3611 align.padding_right = format.fmt.pix.width - width;
3614 if (is_mplane && format.fmt.pix_mp.num_planes != n_v4l_planes)
3615 goto invalid_planes;
3617 /* used to check colorimetry and interlace mode fields presence */
3618 s = gst_caps_get_structure (caps, 0);
3620 if (!gst_v4l2_object_get_interlace_mode (format.fmt.pix.field,
3621 &info.interlace_mode))
3623 if (gst_structure_has_field (s, "interlace-mode")) {
3624 if (format.fmt.pix.field != field)
3628 if (gst_v4l2_object_get_colorspace (&format, &info.colorimetry)) {
3629 if (gst_structure_has_field (s, "colorimetry")) {
3630 if (!gst_v4l2_video_colorimetry_matches (&info.colorimetry,
3631 gst_structure_get_string (s, "colorimetry")))
3632 goto invalid_colorimetry;
3635 /* The driver (or libv4l2) is miss-behaving, just ignore colorimetry from
3637 disable_colorimetry = TRUE;
3638 if (gst_structure_has_field (s, "colorimetry"))
3639 gst_structure_remove_field (s, "colorimetry");
3642 /* In case we have skipped the try_fmt probes, we'll need to set the
3643 * colorimetry and interlace-mode back into the caps. */
3644 if (v4l2object->skip_try_fmt_probes) {
3645 if (!disable_colorimetry && !gst_structure_has_field (s, "colorimetry")) {
3646 gchar *str = gst_video_colorimetry_to_string (&info.colorimetry);
3647 gst_structure_set (s, "colorimetry", G_TYPE_STRING, str, NULL);
3651 if (!gst_structure_has_field (s, "interlace-mode"))
3652 gst_structure_set (s, "interlace-mode", G_TYPE_STRING,
3653 gst_video_interlace_mode_to_string (info.interlace_mode), NULL);
3656 if (try_only) /* good enough for trying only */
3659 if (GST_VIDEO_INFO_HAS_ALPHA (&info)) {
3660 struct v4l2_control ctl = { 0, };
3661 ctl.id = V4L2_CID_ALPHA_COMPONENT;
3664 if (v4l2object->ioctl (fd, VIDIOC_S_CTRL, &ctl) < 0)
3665 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3666 "Failed to set alpha component value");
3669 /* Is there a reason we require the caller to always specify a framerate? */
3670 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Desired framerate: %u/%u", fps_n,
3673 memset (&streamparm, 0x00, sizeof (struct v4l2_streamparm));
3674 streamparm.type = v4l2object->type;
3676 if (v4l2object->ioctl (fd, VIDIOC_G_PARM, &streamparm) < 0)
3677 goto get_parm_failed;
3679 if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE
3680 || v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
3681 GST_VIDEO_INFO_FPS_N (&info) =
3682 streamparm.parm.capture.timeperframe.denominator;
3683 GST_VIDEO_INFO_FPS_D (&info) =
3684 streamparm.parm.capture.timeperframe.numerator;
3686 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Got capture framerate: %u/%u",
3687 streamparm.parm.capture.timeperframe.denominator,
3688 streamparm.parm.capture.timeperframe.numerator);
3690 /* We used to skip frame rate setup if the camera was already setup
3691 * with the requested frame rate. This breaks some cameras though,
3692 * causing them to not output data (several models of Thinkpad cameras
3693 * have this problem at least).
3694 * So, don't skip. */
3695 GST_LOG_OBJECT (v4l2object->dbg_obj, "Setting capture framerate to %u/%u",
3697 /* We want to change the frame rate, so check whether we can. Some cheap USB
3698 * cameras don't have the capability */
3699 if ((streamparm.parm.capture.capability & V4L2_CAP_TIMEPERFRAME) == 0) {
3700 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
3701 "Not setting capture framerate (not supported)");
3705 /* Note: V4L2 wants the frame interval, we have the frame rate */
3706 streamparm.parm.capture.timeperframe.numerator = fps_d;
3707 streamparm.parm.capture.timeperframe.denominator = fps_n;
3709 /* some cheap USB cam's won't accept any change */
3710 if (v4l2object->ioctl (fd, VIDIOC_S_PARM, &streamparm) < 0)
3711 goto set_parm_failed;
3713 if (streamparm.parm.capture.timeperframe.numerator > 0 &&
3714 streamparm.parm.capture.timeperframe.denominator > 0) {
3715 /* get new values */
3716 fps_d = streamparm.parm.capture.timeperframe.numerator;
3717 fps_n = streamparm.parm.capture.timeperframe.denominator;
3719 GST_INFO_OBJECT (v4l2object->dbg_obj, "Set capture framerate to %u/%u",
3722 /* fix v4l2 capture driver to provide framerate values */
3723 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3724 "Reuse caps framerate %u/%u - fix v4l2 capture driver", fps_n, fps_d);
3727 GST_VIDEO_INFO_FPS_N (&info) = fps_n;
3728 GST_VIDEO_INFO_FPS_D (&info) = fps_d;
3729 } else if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_OUTPUT
3730 || v4l2object->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
3731 GST_VIDEO_INFO_FPS_N (&info) =
3732 streamparm.parm.output.timeperframe.denominator;
3733 GST_VIDEO_INFO_FPS_D (&info) =
3734 streamparm.parm.output.timeperframe.numerator;
3736 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Got output framerate: %u/%u",
3737 streamparm.parm.output.timeperframe.denominator,
3738 streamparm.parm.output.timeperframe.numerator);
3740 GST_LOG_OBJECT (v4l2object->dbg_obj, "Setting output framerate to %u/%u",
3742 if ((streamparm.parm.output.capability & V4L2_CAP_TIMEPERFRAME) == 0) {
3743 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
3744 "Not setting output framerate (not supported)");
3748 /* Note: V4L2 wants the frame interval, we have the frame rate */
3749 streamparm.parm.output.timeperframe.numerator = fps_d;
3750 streamparm.parm.output.timeperframe.denominator = fps_n;
3752 if (v4l2object->ioctl (fd, VIDIOC_S_PARM, &streamparm) < 0)
3753 goto set_parm_failed;
3755 if (streamparm.parm.output.timeperframe.numerator > 0 &&
3756 streamparm.parm.output.timeperframe.denominator > 0) {
3757 /* get new values */
3758 fps_d = streamparm.parm.output.timeperframe.numerator;
3759 fps_n = streamparm.parm.output.timeperframe.denominator;
3761 GST_INFO_OBJECT (v4l2object->dbg_obj, "Set output framerate to %u/%u",
3764 /* fix v4l2 output driver to provide framerate values */
3765 GST_WARNING_OBJECT (v4l2object->dbg_obj,
3766 "Reuse caps framerate %u/%u - fix v4l2 output driver", fps_n, fps_d);
3769 GST_VIDEO_INFO_FPS_N (&info) = fps_n;
3770 GST_VIDEO_INFO_FPS_D (&info) = fps_d;
3774 /* add boolean return, so we can fail on drivers bugs */
3775 gst_v4l2_object_save_format (v4l2object, fmtdesc, &format, &info, &align);
3777 /* now configure the pool */
3778 if (!gst_v4l2_object_setup_pool (v4l2object, caps))
3786 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "can't parse caps %" GST_PTR_FORMAT,
3792 if (errno == EINVAL) {
3793 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
3794 (_("Device '%s' has no supported format"), v4l2object->videodev),
3795 ("Call to TRY_FMT failed for %" GST_FOURCC_FORMAT " @ %dx%d: %s",
3796 GST_FOURCC_ARGS (pixelformat), width, height,
3797 g_strerror (errno)));
3799 GST_V4L2_ERROR (error, RESOURCE, FAILED,
3800 (_("Device '%s' failed during initialization"),
3801 v4l2object->videodev),
3802 ("Call to TRY_FMT failed for %" GST_FOURCC_FORMAT " @ %dx%d: %s",
3803 GST_FOURCC_ARGS (pixelformat), width, height,
3804 g_strerror (errno)));
3810 if (errno == EBUSY) {
3811 GST_V4L2_ERROR (error, RESOURCE, BUSY,
3812 (_("Device '%s' is busy"), v4l2object->videodev),
3813 ("Call to S_FMT failed for %" GST_FOURCC_FORMAT " @ %dx%d: %s",
3814 GST_FOURCC_ARGS (pixelformat), width, height,
3815 g_strerror (errno)));
3816 } else if (errno == EINVAL) {
3817 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
3818 (_("Device '%s' has no supported format"), v4l2object->videodev),
3819 ("Call to S_FMT failed for %" GST_FOURCC_FORMAT " @ %dx%d: %s",
3820 GST_FOURCC_ARGS (pixelformat), width, height,
3821 g_strerror (errno)));
3823 GST_V4L2_ERROR (error, RESOURCE, FAILED,
3824 (_("Device '%s' failed during initialization"),
3825 v4l2object->videodev),
3826 ("Call to S_FMT failed for %" GST_FOURCC_FORMAT " @ %dx%d: %s",
3827 GST_FOURCC_ARGS (pixelformat), width, height,
3828 g_strerror (errno)));
3834 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
3835 (_("Device '%s' cannot capture at %dx%d"),
3836 v4l2object->videodev, width, height),
3837 ("Tried to capture at %dx%d, but device returned size %dx%d",
3838 width, height, format.fmt.pix.width, format.fmt.pix.height));
3841 invalid_pixelformat:
3843 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
3844 (_("Device '%s' cannot capture in the specified format"),
3845 v4l2object->videodev),
3846 ("Tried to capture in %" GST_FOURCC_FORMAT
3847 ", but device returned format" " %" GST_FOURCC_FORMAT,
3848 GST_FOURCC_ARGS (pixelformat),
3849 GST_FOURCC_ARGS (format.fmt.pix.pixelformat)));
3854 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
3855 (_("Device '%s' does support non-contiguous planes"),
3856 v4l2object->videodev),
3857 ("Device wants %d planes", format.fmt.pix_mp.num_planes));
3862 enum v4l2_field wanted_field;
3865 wanted_field = format.fmt.pix_mp.field;
3867 wanted_field = format.fmt.pix.field;
3869 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
3870 (_("Device '%s' does not support %s interlacing"),
3871 v4l2object->videodev,
3872 field == V4L2_FIELD_NONE ? "progressive" : "interleaved"),
3873 ("Device wants %s interlacing",
3874 wanted_field == V4L2_FIELD_NONE ? "progressive" : "interleaved"));
3877 invalid_colorimetry:
3879 gchar *wanted_colorimetry;
3881 wanted_colorimetry = gst_video_colorimetry_to_string (&info.colorimetry);
3883 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
3884 (_("Device '%s' does not support %s colorimetry"),
3885 v4l2object->videodev, gst_structure_get_string (s, "colorimetry")),
3886 ("Device wants %s colorimetry", wanted_colorimetry));
3888 g_free (wanted_colorimetry);
3893 /* it's possible that this call is not supported */
3894 if (errno != EINVAL && errno != ENOTTY) {
3895 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
3896 (_("Could not get parameters on device '%s'"),
3897 v4l2object->videodev), GST_ERROR_SYSTEM);
3903 GST_V4L2_ERROR (error, RESOURCE, SETTINGS,
3904 (_("Video device did not accept new frame rate setting.")),
3910 /* setup_pool already send the error */
3916 gst_v4l2_object_set_format (GstV4l2Object * v4l2object, GstCaps * caps,
3917 GstV4l2Error * error)
3919 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Setting format to %" GST_PTR_FORMAT,
3921 return gst_v4l2_object_set_format_full (v4l2object, caps, FALSE, error);
3925 gst_v4l2_object_try_format (GstV4l2Object * v4l2object, GstCaps * caps,
3926 GstV4l2Error * error)
3928 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Trying format %" GST_PTR_FORMAT,
3930 return gst_v4l2_object_set_format_full (v4l2object, caps, TRUE, error);
3934 * gst_v4l2_object_acquire_format:
3935 * @v4l2object the object
3936 * @info a GstVideoInfo to be filled
3938 * Acquire the driver choosen format. This is useful in decoder or encoder elements where
3939 * the output format is choosen by the HW.
3941 * Returns: %TRUE on success, %FALSE on failure.
3944 gst_v4l2_object_acquire_format (GstV4l2Object * v4l2object, GstVideoInfo * info)
3946 struct v4l2_fmtdesc *fmtdesc;
3947 struct v4l2_format fmt;
3948 struct v4l2_crop crop;
3949 struct v4l2_selection sel;
3950 struct v4l2_rect *r = NULL;
3951 GstVideoFormat format;
3952 guint width, height;
3953 GstVideoAlignment align;
3955 gst_video_info_init (info);
3956 gst_video_alignment_reset (&align);
3958 memset (&fmt, 0x00, sizeof (struct v4l2_format));
3959 fmt.type = v4l2object->type;
3960 if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_G_FMT, &fmt) < 0)
3961 goto get_fmt_failed;
3963 fmtdesc = gst_v4l2_object_get_format_from_fourcc (v4l2object,
3964 fmt.fmt.pix.pixelformat);
3965 if (fmtdesc == NULL)
3966 goto unsupported_format;
3968 /* No need to care about mplane, the four first params are the same */
3969 format = gst_v4l2_object_v4l2fourcc_to_video_format (fmt.fmt.pix.pixelformat);
3971 /* fails if we do no translate the fmt.pix.pixelformat to GstVideoFormat */
3972 if (format == GST_VIDEO_FORMAT_UNKNOWN)
3973 goto unsupported_format;
3975 if (fmt.fmt.pix.width == 0 || fmt.fmt.pix.height == 0)
3976 goto invalid_dimensions;
3978 width = fmt.fmt.pix.width;
3979 height = fmt.fmt.pix.height;
3981 /* Use the default compose rectangle */
3982 memset (&sel, 0, sizeof (struct v4l2_selection));
3983 sel.type = v4l2object->type;
3984 sel.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
3985 if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_G_SELECTION, &sel) >= 0) {
3988 /* For ancient kernels, fall back to G_CROP */
3989 memset (&crop, 0, sizeof (struct v4l2_crop));
3990 crop.type = v4l2object->type;
3991 if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_G_CROP, &crop) >= 0)
3995 align.padding_left = r->left;
3996 align.padding_top = r->top;
3997 align.padding_right = width - r->width - r->left;
3998 align.padding_bottom = height - r->height - r->top;
4003 gst_video_info_set_format (info, format, width, height);
4005 switch (fmt.fmt.pix.field) {
4006 case V4L2_FIELD_ANY:
4007 case V4L2_FIELD_NONE:
4008 info->interlace_mode = GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
4010 case V4L2_FIELD_INTERLACED:
4011 case V4L2_FIELD_INTERLACED_TB:
4012 case V4L2_FIELD_INTERLACED_BT:
4013 info->interlace_mode = GST_VIDEO_INTERLACE_MODE_INTERLEAVED;
4016 goto unsupported_field;
4019 gst_v4l2_object_get_colorspace (&fmt, &info->colorimetry);
4021 gst_v4l2_object_save_format (v4l2object, fmtdesc, &fmt, info, &align);
4023 /* Shall we setup the pool ? */
4029 GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
4030 (_("Video device did not provide output format.")), GST_ERROR_SYSTEM);
4035 GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
4036 (_("Video device returned invalid dimensions.")),
4037 ("Expected non 0 dimensions, got %dx%d", fmt.fmt.pix.width,
4038 fmt.fmt.pix.height));
4043 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
4044 (_("Video device uses an unsupported interlacing method.")),
4045 ("V4L2 field type %d not supported", fmt.fmt.pix.field));
4050 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
4051 (_("Video device uses an unsupported pixel format.")),
4052 ("V4L2 format %" GST_FOURCC_FORMAT " not supported",
4053 GST_FOURCC_ARGS (fmt.fmt.pix.pixelformat)));
4059 gst_v4l2_object_set_crop (GstV4l2Object * obj)
4061 struct v4l2_selection sel = { 0 };
4062 struct v4l2_crop crop = { 0 };
4064 sel.type = obj->type;
4065 sel.target = V4L2_SEL_TGT_CROP;
4067 sel.r.left = obj->align.padding_left;
4068 sel.r.top = obj->align.padding_top;
4069 sel.r.width = obj->info.width;
4070 sel.r.height = obj->info.height;
4072 crop.type = obj->type;
4075 if (obj->align.padding_left + obj->align.padding_top +
4076 obj->align.padding_right + obj->align.padding_bottom == 0) {
4077 GST_DEBUG_OBJECT (obj->dbg_obj, "no cropping needed");
4081 GST_DEBUG_OBJECT (obj->dbg_obj,
4082 "Desired cropping left %u, top %u, size %ux%u", crop.c.left, crop.c.top,
4083 crop.c.width, crop.c.height);
4085 if (obj->ioctl (obj->video_fd, VIDIOC_S_SELECTION, &sel) < 0) {
4086 if (errno != ENOTTY) {
4087 GST_WARNING_OBJECT (obj->dbg_obj,
4088 "Failed to set crop rectangle with VIDIOC_S_SELECTION: %s",
4089 g_strerror (errno));
4092 if (obj->ioctl (obj->video_fd, VIDIOC_S_CROP, &crop) < 0) {
4093 GST_WARNING_OBJECT (obj->dbg_obj, "VIDIOC_S_CROP failed");
4097 if (obj->ioctl (obj->video_fd, VIDIOC_G_CROP, &crop) < 0) {
4098 GST_WARNING_OBJECT (obj->dbg_obj, "VIDIOC_G_CROP failed");
4106 GST_DEBUG_OBJECT (obj->dbg_obj,
4107 "Got cropping left %u, top %u, size %ux%u", crop.c.left, crop.c.top,
4108 crop.c.width, crop.c.height);
4114 gst_v4l2_object_caps_equal (GstV4l2Object * v4l2object, GstCaps * caps)
4116 GstStructure *config;
4120 if (!v4l2object->pool)
4123 config = gst_buffer_pool_get_config (v4l2object->pool);
4124 gst_buffer_pool_config_get_params (config, &oldcaps, NULL, NULL, NULL);
4126 ret = oldcaps && gst_caps_is_equal (caps, oldcaps);
4128 gst_structure_free (config);
4134 gst_v4l2_object_caps_is_subset (GstV4l2Object * v4l2object, GstCaps * caps)
4136 GstStructure *config;
4140 if (!v4l2object->pool)
4143 config = gst_buffer_pool_get_config (v4l2object->pool);
4144 gst_buffer_pool_config_get_params (config, &oldcaps, NULL, NULL, NULL);
4146 ret = oldcaps && gst_caps_is_subset (oldcaps, caps);
4148 gst_structure_free (config);
4154 gst_v4l2_object_get_current_caps (GstV4l2Object * v4l2object)
4156 GstStructure *config;
4159 if (!v4l2object->pool)
4162 config = gst_buffer_pool_get_config (v4l2object->pool);
4163 gst_buffer_pool_config_get_params (config, &oldcaps, NULL, NULL, NULL);
4166 gst_caps_ref (oldcaps);
4168 gst_structure_free (config);
4174 gst_v4l2_object_unlock (GstV4l2Object * v4l2object)
4176 gboolean ret = TRUE;
4178 GST_LOG_OBJECT (v4l2object->dbg_obj, "start flushing");
4180 if (v4l2object->pool && gst_buffer_pool_is_active (v4l2object->pool))
4181 gst_buffer_pool_set_flushing (v4l2object->pool, TRUE);
4187 gst_v4l2_object_unlock_stop (GstV4l2Object * v4l2object)
4189 gboolean ret = TRUE;
4191 GST_LOG_OBJECT (v4l2object->dbg_obj, "stop flushing");
4193 if (v4l2object->pool && gst_buffer_pool_is_active (v4l2object->pool))
4194 gst_buffer_pool_set_flushing (v4l2object->pool, FALSE);
4200 gst_v4l2_object_stop (GstV4l2Object * v4l2object)
4202 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "stopping");
4204 if (!GST_V4L2_IS_OPEN (v4l2object))
4206 if (!GST_V4L2_IS_ACTIVE (v4l2object))
4209 if (v4l2object->pool) {
4210 if (!gst_v4l2_buffer_pool_orphan (&v4l2object->pool)) {
4211 GST_DEBUG_OBJECT (v4l2object->dbg_obj, "deactivating pool");
4212 gst_buffer_pool_set_active (v4l2object->pool, FALSE);
4213 gst_object_unref (v4l2object->pool);
4215 v4l2object->pool = NULL;
4218 GST_V4L2_SET_INACTIVE (v4l2object);
4225 gst_v4l2_object_probe_caps (GstV4l2Object * v4l2object, GstCaps * filter)
4231 formats = gst_v4l2_object_get_format_list (v4l2object);
4233 ret = gst_caps_new_empty ();
4235 if (v4l2object->keep_aspect && !v4l2object->par) {
4236 struct v4l2_cropcap cropcap;
4238 memset (&cropcap, 0, sizeof (cropcap));
4240 cropcap.type = v4l2object->type;
4241 if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_CROPCAP, &cropcap) < 0) {
4242 if (errno != ENOTTY)
4243 GST_WARNING_OBJECT (v4l2object->dbg_obj,
4244 "Failed to probe pixel aspect ratio with VIDIOC_CROPCAP: %s",
4245 g_strerror (errno));
4246 } else if (cropcap.pixelaspect.numerator && cropcap.pixelaspect.denominator) {
4247 v4l2object->par = g_new0 (GValue, 1);
4248 g_value_init (v4l2object->par, GST_TYPE_FRACTION);
4249 gst_value_set_fraction (v4l2object->par, cropcap.pixelaspect.numerator,
4250 cropcap.pixelaspect.denominator);
4254 for (walk = formats; walk; walk = walk->next) {
4255 struct v4l2_fmtdesc *format;
4256 GstStructure *template;
4259 format = (struct v4l2_fmtdesc *) walk->data;
4261 template = gst_v4l2_object_v4l2fourcc_to_bare_struct (format->pixelformat);
4264 GST_DEBUG_OBJECT (v4l2object->dbg_obj,
4265 "unknown format %" GST_FOURCC_FORMAT,
4266 GST_FOURCC_ARGS (format->pixelformat));
4270 /* If we have a filter, check if we need to probe this format or not */
4272 GstCaps *format_caps = gst_caps_new_empty ();
4274 gst_caps_append_structure (format_caps, gst_structure_copy (template));
4276 if (!gst_caps_can_intersect (format_caps, filter)) {
4277 gst_caps_unref (format_caps);
4278 gst_structure_free (template);
4282 gst_caps_unref (format_caps);
4285 tmp = gst_v4l2_object_probe_caps_for_format (v4l2object,
4286 format->pixelformat, template);
4288 gst_caps_append (ret, tmp);
4290 #ifdef TIZEN_FEATURE_V4L2_TBM_SUPPORT
4291 if (format->pixelformat == V4L2_PIX_FMT_NV12 ||
4292 format->pixelformat == V4L2_PIX_FMT_YUV420) {
4293 GstStructure *alt_s = gst_structure_copy (template);
4295 if (format->pixelformat == V4L2_PIX_FMT_NV12)
4296 gst_structure_set (alt_s, "format", G_TYPE_STRING, "SN12", NULL);
4298 gst_structure_set (alt_s, "format", G_TYPE_STRING, "S420", NULL);
4300 tmp = gst_v4l2_object_probe_caps_for_format (v4l2object,
4301 format->pixelformat, alt_s);
4304 gst_caps_append (ret, tmp);
4306 gst_structure_free (alt_s);
4308 #endif /* TIZEN_FEATURE_V4L2_TBM_SUPPORT */
4309 gst_structure_free (template);
4316 ret = gst_caps_intersect_full (filter, ret, GST_CAPS_INTERSECT_FIRST);
4317 gst_caps_unref (tmp);
4320 GST_INFO_OBJECT (v4l2object->dbg_obj, "probed caps: %" GST_PTR_FORMAT, ret);
4326 gst_v4l2_object_get_caps (GstV4l2Object * v4l2object, GstCaps * filter)
4330 if (v4l2object->probed_caps == NULL)
4331 v4l2object->probed_caps = gst_v4l2_object_probe_caps (v4l2object, NULL);
4334 ret = gst_caps_intersect_full (filter, v4l2object->probed_caps,
4335 GST_CAPS_INTERSECT_FIRST);
4337 ret = gst_caps_ref (v4l2object->probed_caps);
4344 gst_v4l2_object_decide_allocation (GstV4l2Object * obj, GstQuery * query)
4347 GstBufferPool *pool = NULL, *other_pool = NULL;
4348 GstStructure *config;
4349 guint size, min, max, own_min = 0;
4351 gboolean has_video_meta;
4352 gboolean can_share_own_pool, pushing_from_our_pool = FALSE;
4353 GstAllocator *allocator = NULL;
4354 GstAllocationParams params = { 0 };
4356 #ifdef TIZEN_FEATURE_V4L2_TBM_SUPPORT
4357 GST_INFO_OBJECT (obj->dbg_obj, "decide allocation - %s",
4358 V4L2_TYPE_IS_OUTPUT (obj->type) ? "output" : "capture");
4359 #else /* TIZEN_FEATURE_V4L2_TBM_SUPPORT */
4360 GST_DEBUG_OBJECT (obj->dbg_obj, "decide allocation");
4361 #endif /* TIZEN_FEATURE_V4L2_TBM_SUPPORT */
4363 g_return_val_if_fail (obj->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
4364 obj->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE, FALSE);
4366 gst_query_parse_allocation (query, &caps, NULL);
4368 if (obj->pool == NULL) {
4369 if (!gst_v4l2_object_setup_pool (obj, caps))
4373 if (gst_query_get_n_allocation_params (query) > 0)
4374 gst_query_parse_nth_allocation_param (query, 0, &allocator, ¶ms);
4376 if (gst_query_get_n_allocation_pools (query) > 0) {
4377 gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
4386 GST_DEBUG_OBJECT (obj->dbg_obj, "allocation: size:%u min:%u max:%u pool:%"
4387 GST_PTR_FORMAT, size, min, max, pool);
4390 gst_query_find_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
4392 can_share_own_pool = (has_video_meta || !obj->need_video_meta);
4394 gst_v4l2_get_driver_min_buffers (obj);
4395 /* We can't share our own pool, if it exceed V4L2 capacity */
4396 if (min + obj->min_buffers + 1 > VIDEO_MAX_FRAME)
4397 can_share_own_pool = FALSE;
4400 switch (obj->mode) {
4401 case GST_V4L2_IO_RW:
4403 /* in READ/WRITE mode, prefer a downstream pool because our own pool
4404 * doesn't help much, we have to write to it as well */
4405 GST_DEBUG_OBJECT (obj->dbg_obj,
4406 "read/write mode: using downstream pool");
4407 /* use the bigest size, when we use our own pool we can't really do any
4408 * other size than what the hardware gives us but for downstream pools
4410 size = MAX (size, obj->info.size);
4411 } else if (can_share_own_pool) {
4412 /* no downstream pool, use our own then */
4413 GST_DEBUG_OBJECT (obj->dbg_obj,
4414 "read/write mode: no downstream pool, using our own");
4415 pool = gst_object_ref (obj->pool);
4416 size = obj->info.size;
4417 pushing_from_our_pool = TRUE;
4421 case GST_V4L2_IO_USERPTR:
4422 case GST_V4L2_IO_DMABUF_IMPORT:
4423 /* in importing mode, prefer our own pool, and pass the other pool to
4424 * our own, so it can serve itself */
4426 goto no_downstream_pool;
4427 gst_v4l2_buffer_pool_set_other_pool (GST_V4L2_BUFFER_POOL (obj->pool),
4430 gst_object_unref (pool);
4431 pool = gst_object_ref (obj->pool);
4432 size = obj->info.size;
4435 case GST_V4L2_IO_MMAP:
4436 case GST_V4L2_IO_DMABUF:
4437 /* in streaming mode, prefer our own pool */
4438 /* Check if we can use it ... */
4439 if (can_share_own_pool) {
4441 gst_object_unref (pool);
4442 pool = gst_object_ref (obj->pool);
4443 size = obj->info.size;
4444 GST_DEBUG_OBJECT (obj->dbg_obj,
4445 "streaming mode: using our own pool %" GST_PTR_FORMAT, pool);
4446 pushing_from_our_pool = TRUE;
4448 GST_DEBUG_OBJECT (obj->dbg_obj,
4449 "streaming mode: copying to downstream pool %" GST_PTR_FORMAT,
4452 GST_DEBUG_OBJECT (obj->dbg_obj,
4453 "streaming mode: no usable pool, copying to generic pool");
4454 size = MAX (size, obj->info.size);
4457 case GST_V4L2_IO_AUTO:
4459 GST_WARNING_OBJECT (obj->dbg_obj, "unhandled mode");
4466 /* If pushing from our own pool, configure it with queried minimum,
4467 * otherwise use the minimum required */
4468 if (pushing_from_our_pool) {
4469 /* When pushing from our own pool, we need what downstream one, to be able
4470 * to fill the pipeline, the minimum required to decoder according to the
4471 * driver and 2 more, so we don't endup up with everything downstream or
4472 * held by the decoder. We account 2 buffers for v4l2 so when one is being
4473 * pushed downstream the other one can already be queued for the next
4475 own_min = min + obj->min_buffers + 2;
4477 /* If no allocation parameters where provided, allow for a little more
4478 * buffers and enable copy threshold */
4481 gst_v4l2_buffer_pool_copy_at_threshold (GST_V4L2_BUFFER_POOL (pool),
4484 gst_v4l2_buffer_pool_copy_at_threshold (GST_V4L2_BUFFER_POOL (pool),
4489 /* In this case we'll have to configure two buffer pool. For our buffer
4490 * pool, we'll need what the driver one, and one more, so we can dequeu */
4491 own_min = obj->min_buffers + 1;
4492 own_min = MAX (own_min, GST_V4L2_MIN_BUFFERS);
4494 /* for the downstream pool, we keep what downstream wants, though ensure
4495 * at least a minimum if downstream didn't suggest anything (we are
4496 * expecting the base class to create a default one for the context) */
4497 min = MAX (min, GST_V4L2_MIN_BUFFERS);
4499 /* To import we need the other pool to hold at least own_min */
4500 if (obj->pool == pool)
4504 /* Request a bigger max, if one was suggested but it's too small */
4506 max = MAX (min, max);
4508 /* First step, configure our own pool */
4509 config = gst_buffer_pool_get_config (obj->pool);
4511 if (obj->need_video_meta || has_video_meta) {
4512 GST_DEBUG_OBJECT (obj->dbg_obj, "activate Video Meta");
4513 gst_buffer_pool_config_add_option (config,
4514 GST_BUFFER_POOL_OPTION_VIDEO_META);
4517 gst_buffer_pool_config_set_allocator (config, allocator, ¶ms);
4518 gst_buffer_pool_config_set_params (config, caps, size, own_min, 0);
4520 GST_DEBUG_OBJECT (obj->dbg_obj, "setting own pool config to %"
4521 GST_PTR_FORMAT, config);
4523 /* Our pool often need to adjust the value */
4524 if (!gst_buffer_pool_set_config (obj->pool, config)) {
4525 config = gst_buffer_pool_get_config (obj->pool);
4527 GST_DEBUG_OBJECT (obj->dbg_obj, "own pool config changed to %"
4528 GST_PTR_FORMAT, config);
4530 /* our pool will adjust the maximum buffer, which we are fine with */
4531 if (!gst_buffer_pool_set_config (obj->pool, config))
4535 /* Now configure the other pool if different */
4536 if (obj->pool != pool)
4540 config = gst_buffer_pool_get_config (other_pool);
4541 gst_buffer_pool_config_set_allocator (config, allocator, ¶ms);
4542 gst_buffer_pool_config_set_params (config, caps, size, min, max);
4544 GST_DEBUG_OBJECT (obj->dbg_obj, "setting other pool config to %"
4545 GST_PTR_FORMAT, config);
4547 /* if downstream supports video metadata, add this to the pool config */
4548 if (has_video_meta) {
4549 GST_DEBUG_OBJECT (obj->dbg_obj, "activate Video Meta");
4550 gst_buffer_pool_config_add_option (config,
4551 GST_BUFFER_POOL_OPTION_VIDEO_META);
4554 if (!gst_buffer_pool_set_config (other_pool, config)) {
4555 config = gst_buffer_pool_get_config (other_pool);
4557 if (!gst_buffer_pool_config_validate_params (config, caps, size, min,
4559 gst_structure_free (config);
4563 if (!gst_buffer_pool_set_config (other_pool, config))
4569 /* For simplicity, simply read back the active configuration, so our base
4570 * class get the right information */
4571 config = gst_buffer_pool_get_config (pool);
4572 gst_buffer_pool_config_get_params (config, NULL, &size, &min, &max);
4573 gst_structure_free (config);
4577 gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
4579 gst_query_add_allocation_pool (query, pool, size, min, max);
4582 gst_object_unref (allocator);
4585 gst_object_unref (pool);
4591 /* setup_pool already send the error */
4596 GST_ELEMENT_ERROR (obj->element, RESOURCE, SETTINGS,
4597 (_("Failed to configure internal buffer pool.")), (NULL));
4602 GST_ELEMENT_ERROR (obj->element, RESOURCE, SETTINGS,
4603 (_("Video device did not suggest any buffer size.")), (NULL));
4609 gst_object_unref (allocator);
4612 gst_object_unref (pool);
4617 GST_ELEMENT_ERROR (obj->element, RESOURCE, SETTINGS,
4618 (_("No downstream pool to import from.")),
4619 ("When importing DMABUF or USERPTR, we need a pool to import from"));
4625 gst_v4l2_object_propose_allocation (GstV4l2Object * obj, GstQuery * query)
4627 GstBufferPool *pool;
4628 /* we need at least 2 buffers to operate */
4629 guint size, min, max;
4633 /* Set defaults allocation parameters */
4634 size = obj->info.size;
4635 min = GST_V4L2_MIN_BUFFERS;
4636 max = VIDEO_MAX_FRAME;
4638 gst_query_parse_allocation (query, &caps, &need_pool);
4643 switch (obj->mode) {
4644 case GST_V4L2_IO_MMAP:
4645 case GST_V4L2_IO_DMABUF:
4646 if ((pool = obj->pool))
4647 gst_object_ref (pool);
4656 GstStructure *config;
4658 /* we had a pool, check caps */
4659 config = gst_buffer_pool_get_config (pool);
4660 gst_buffer_pool_config_get_params (config, &pcaps, NULL, NULL, NULL);
4662 GST_DEBUG_OBJECT (obj->dbg_obj,
4663 "we had a pool with caps %" GST_PTR_FORMAT, pcaps);
4664 if (!gst_caps_is_equal (caps, pcaps)) {
4665 gst_structure_free (config);
4666 gst_object_unref (pool);
4667 goto different_caps;
4669 gst_structure_free (config);
4671 gst_v4l2_get_driver_min_buffers (obj);
4673 min = MAX (obj->min_buffers, GST_V4L2_MIN_BUFFERS);
4675 gst_query_add_allocation_pool (query, pool, size, min, max);
4677 /* we also support various metadata */
4678 gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
4681 gst_object_unref (pool);
4688 GST_DEBUG_OBJECT (obj->dbg_obj, "no caps specified");
4693 /* different caps, we can't use this pool */
4694 GST_DEBUG_OBJECT (obj->dbg_obj, "pool has different caps");
4700 gst_v4l2_object_try_import (GstV4l2Object * obj, GstBuffer * buffer)
4702 GstVideoMeta *vmeta;
4703 guint n_mem = gst_buffer_n_memory (buffer);
4705 /* only import if requested */
4706 switch (obj->mode) {
4707 case GST_V4L2_IO_USERPTR:
4708 case GST_V4L2_IO_DMABUF_IMPORT:
4711 GST_DEBUG_OBJECT (obj->dbg_obj,
4712 "The io-mode does not enable importation");
4716 vmeta = gst_buffer_get_video_meta (buffer);
4717 if (!vmeta && obj->need_video_meta) {
4718 GST_DEBUG_OBJECT (obj->dbg_obj, "Downstream buffer uses standard "
4719 "stride/offset while the driver does not.");
4723 /* we need matching strides/offsets and size */
4726 gboolean need_fmt_update = FALSE;
4728 if (vmeta->n_planes != GST_VIDEO_INFO_N_PLANES (&obj->info)) {
4729 GST_WARNING_OBJECT (obj->dbg_obj,
4730 "Cannot import buffers with different number planes");
4734 for (p = 0; p < vmeta->n_planes; p++) {
4735 if (vmeta->stride[p] < obj->info.stride[p]) {
4736 GST_DEBUG_OBJECT (obj->dbg_obj,
4737 "Not importing as remote stride %i is smaller then %i on plane %u",
4738 vmeta->stride[p], obj->info.stride[p], p);
4740 } else if (vmeta->stride[p] > obj->info.stride[p]) {
4741 need_fmt_update = TRUE;
4744 if (vmeta->offset[p] < obj->info.offset[p]) {
4745 GST_DEBUG_OBJECT (obj->dbg_obj,
4746 "Not importing as offset %" G_GSIZE_FORMAT
4747 " is smaller then %" G_GSIZE_FORMAT " on plane %u",
4748 vmeta->offset[p], obj->info.offset[p], p);
4750 } else if (vmeta->offset[p] > obj->info.offset[p]) {
4751 need_fmt_update = TRUE;
4755 if (need_fmt_update) {
4756 struct v4l2_format format;
4757 gint wanted_stride[GST_VIDEO_MAX_PLANES] = { 0, };
4759 format = obj->format;
4761 /* update the current format with the stride we want to import from */
4762 if (V4L2_TYPE_IS_MULTIPLANAR (obj->type)) {
4765 GST_DEBUG_OBJECT (obj->dbg_obj, "Wanted strides:");
4767 for (i = 0; i < obj->n_v4l2_planes; i++) {
4768 gint stride = vmeta->stride[i];
4770 if (GST_VIDEO_FORMAT_INFO_IS_TILED (obj->info.finfo))
4771 stride = GST_VIDEO_TILE_X_TILES (stride) <<
4772 GST_VIDEO_FORMAT_INFO_TILE_WS (obj->info.finfo);
4774 format.fmt.pix_mp.plane_fmt[i].bytesperline = stride;
4775 wanted_stride[i] = stride;
4776 GST_DEBUG_OBJECT (obj->dbg_obj, " [%u] %i", i, wanted_stride[i]);
4779 gint stride = vmeta->stride[0];
4781 GST_DEBUG_OBJECT (obj->dbg_obj, "Wanted stride: %i", stride);
4783 if (GST_VIDEO_FORMAT_INFO_IS_TILED (obj->info.finfo))
4784 stride = GST_VIDEO_TILE_X_TILES (stride) <<
4785 GST_VIDEO_FORMAT_INFO_TILE_WS (obj->info.finfo);
4787 format.fmt.pix.bytesperline = stride;
4788 wanted_stride[0] = stride;
4791 if (obj->ioctl (obj->video_fd, VIDIOC_S_FMT, &format) < 0) {
4792 GST_WARNING_OBJECT (obj->dbg_obj,
4793 "Something went wrong trying to update current format: %s",
4794 g_strerror (errno));
4798 gst_v4l2_object_save_format (obj, obj->fmtdesc, &format, &obj->info,
4801 if (V4L2_TYPE_IS_MULTIPLANAR (obj->type)) {
4804 for (i = 0; i < obj->n_v4l2_planes; i++) {
4805 if (format.fmt.pix_mp.plane_fmt[i].bytesperline != wanted_stride[i]) {
4806 GST_DEBUG_OBJECT (obj->dbg_obj,
4807 "[%i] Driver did not accept the new stride (wants %i, got %i)",
4808 i, format.fmt.pix_mp.plane_fmt[i].bytesperline,
4814 if (format.fmt.pix.bytesperline != wanted_stride[0]) {
4815 GST_DEBUG_OBJECT (obj->dbg_obj,
4816 "Driver did not accept the new stride (wants %i, got %i)",
4817 format.fmt.pix.bytesperline, wanted_stride[0]);
4824 /* we can always import single memory buffer, but otherwise we need the same
4825 * amount of memory object. */
4826 if (n_mem != 1 && n_mem != obj->n_v4l2_planes) {
4827 GST_DEBUG_OBJECT (obj->dbg_obj, "Can only import %i memory, "
4828 "buffers contains %u memory", obj->n_v4l2_planes, n_mem);
4832 /* For DMABuf importation we need DMABuf of course */
4833 if (obj->mode == GST_V4L2_IO_DMABUF_IMPORT) {
4836 for (i = 0; i < n_mem; i++) {
4837 GstMemory *mem = gst_buffer_peek_memory (buffer, i);
4839 if (!gst_is_dmabuf_memory (mem)) {
4840 GST_DEBUG_OBJECT (obj->dbg_obj, "Cannot import non-DMABuf memory.");
4846 /* for the remaining, only the kernel driver can tell */