3 * Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
4 * 2006 Edgard Lima <edgard.lima@indt.org.br>
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,
21 /* FIXME 0.11: suppress warnings for deprecated API such as GValueArray
22 * with newer GLib versions (>= 2.31.0) */
23 #define GLIB_DISABLE_DEPRECATION_WARNINGS
36 #include <gudev/gudev.h>
39 #include "v4l2_calls.h"
40 #include "gstv4l2tuner.h"
41 #include "gstv4l2colorbalance.h"
43 #include "gst/gst-i18n-plugin.h"
45 #include <gst/video/video.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_CHANNEL NULL
55 #define DEFAULT_PROP_FREQUENCY 0
56 #define DEFAULT_PROP_IO_MODE GST_V4L2_IO_AUTO
58 #define ENCODED_BUFFER_SIZE (1 * 1024 * 1024)
63 V4L2_STD_OBJECT_PROPS,
67 * common format / caps utilities:
71 GST_V4L2_RAW = 1 << 0,
72 GST_V4L2_CODEC = 1 << 1,
73 GST_V4L2_TRANSPORT = 1 << 2,
74 GST_V4L2_NO_PARSE = 1 << 3,
82 GstV4L2FormatFlags flags;
85 static const GstV4L2FormatDesc gst_v4l2_formats[] = {
87 {V4L2_PIX_FMT_RGB332, TRUE, GST_V4L2_RAW},
88 {V4L2_PIX_FMT_ARGB555, TRUE, GST_V4L2_RAW},
89 {V4L2_PIX_FMT_XRGB555, TRUE, GST_V4L2_RAW},
90 {V4L2_PIX_FMT_ARGB555X, TRUE, GST_V4L2_RAW},
91 {V4L2_PIX_FMT_XRGB555X, TRUE, GST_V4L2_RAW},
92 {V4L2_PIX_FMT_RGB565, TRUE, GST_V4L2_RAW},
93 {V4L2_PIX_FMT_RGB565X, TRUE, GST_V4L2_RAW},
94 {V4L2_PIX_FMT_BGR666, TRUE, GST_V4L2_RAW},
95 {V4L2_PIX_FMT_BGR24, TRUE, GST_V4L2_RAW},
96 {V4L2_PIX_FMT_RGB24, TRUE, GST_V4L2_RAW},
97 {V4L2_PIX_FMT_ABGR32, TRUE, GST_V4L2_RAW},
98 {V4L2_PIX_FMT_XBGR32, TRUE, GST_V4L2_RAW},
99 {V4L2_PIX_FMT_ARGB32, TRUE, GST_V4L2_RAW},
100 {V4L2_PIX_FMT_XRGB32, TRUE, GST_V4L2_RAW},
102 /* Deprecated Packed RGB Image Formats (alpha ambiguity) */
103 {V4L2_PIX_FMT_RGB444, TRUE, GST_V4L2_RAW},
104 {V4L2_PIX_FMT_RGB555, TRUE, GST_V4L2_RAW},
105 {V4L2_PIX_FMT_RGB555X, TRUE, GST_V4L2_RAW},
106 {V4L2_PIX_FMT_BGR32, TRUE, GST_V4L2_RAW},
107 {V4L2_PIX_FMT_RGB32, TRUE, GST_V4L2_RAW},
110 {V4L2_PIX_FMT_GREY, TRUE, GST_V4L2_RAW},
111 {V4L2_PIX_FMT_Y4, TRUE, GST_V4L2_RAW},
112 {V4L2_PIX_FMT_Y6, TRUE, GST_V4L2_RAW},
113 {V4L2_PIX_FMT_Y10, TRUE, GST_V4L2_RAW},
114 {V4L2_PIX_FMT_Y12, TRUE, GST_V4L2_RAW},
115 {V4L2_PIX_FMT_Y16, TRUE, GST_V4L2_RAW},
116 {V4L2_PIX_FMT_Y16_BE, TRUE, GST_V4L2_RAW},
117 {V4L2_PIX_FMT_Y10BPACK, TRUE, GST_V4L2_RAW},
119 /* Palette formats */
120 {V4L2_PIX_FMT_PAL8, TRUE, GST_V4L2_RAW},
122 /* Chrominance formats */
123 {V4L2_PIX_FMT_UV8, TRUE, GST_V4L2_RAW},
125 /* Luminance+Chrominance formats */
126 {V4L2_PIX_FMT_YVU410, TRUE, GST_V4L2_RAW},
127 {V4L2_PIX_FMT_YVU420, TRUE, GST_V4L2_RAW},
128 {V4L2_PIX_FMT_YVU420M, TRUE, GST_V4L2_RAW},
129 {V4L2_PIX_FMT_YUYV, TRUE, GST_V4L2_RAW},
130 {V4L2_PIX_FMT_YYUV, TRUE, GST_V4L2_RAW},
131 {V4L2_PIX_FMT_YVYU, TRUE, GST_V4L2_RAW},
132 {V4L2_PIX_FMT_UYVY, TRUE, GST_V4L2_RAW},
133 {V4L2_PIX_FMT_VYUY, TRUE, GST_V4L2_RAW},
134 {V4L2_PIX_FMT_YUV422P, TRUE, GST_V4L2_RAW},
135 {V4L2_PIX_FMT_YUV411P, TRUE, GST_V4L2_RAW},
136 {V4L2_PIX_FMT_Y41P, TRUE, GST_V4L2_RAW},
137 {V4L2_PIX_FMT_YUV444, TRUE, GST_V4L2_RAW},
138 {V4L2_PIX_FMT_YUV555, TRUE, GST_V4L2_RAW},
139 {V4L2_PIX_FMT_YUV565, TRUE, GST_V4L2_RAW},
140 {V4L2_PIX_FMT_YUV32, TRUE, GST_V4L2_RAW},
141 {V4L2_PIX_FMT_YUV410, TRUE, GST_V4L2_RAW},
142 {V4L2_PIX_FMT_YUV420, TRUE, GST_V4L2_RAW},
143 {V4L2_PIX_FMT_YUV420M, TRUE, GST_V4L2_RAW},
144 {V4L2_PIX_FMT_HI240, TRUE, GST_V4L2_RAW},
145 {V4L2_PIX_FMT_HM12, TRUE, GST_V4L2_RAW},
146 {V4L2_PIX_FMT_M420, TRUE, GST_V4L2_RAW},
148 /* two planes -- one Y, one Cr + Cb interleaved */
149 {V4L2_PIX_FMT_NV12, TRUE, GST_V4L2_RAW},
150 {V4L2_PIX_FMT_NV12M, TRUE, GST_V4L2_RAW},
151 {V4L2_PIX_FMT_NV12MT, TRUE, GST_V4L2_RAW},
152 {V4L2_PIX_FMT_NV12MT_16X16, TRUE, GST_V4L2_RAW},
153 {V4L2_PIX_FMT_NV21, TRUE, GST_V4L2_RAW},
154 {V4L2_PIX_FMT_NV21M, TRUE, GST_V4L2_RAW},
155 {V4L2_PIX_FMT_NV16, TRUE, GST_V4L2_RAW},
156 {V4L2_PIX_FMT_NV16M, TRUE, GST_V4L2_RAW},
157 {V4L2_PIX_FMT_NV61, TRUE, GST_V4L2_RAW},
158 {V4L2_PIX_FMT_NV61M, TRUE, GST_V4L2_RAW},
159 {V4L2_PIX_FMT_NV24, TRUE, GST_V4L2_RAW},
160 {V4L2_PIX_FMT_NV42, TRUE, GST_V4L2_RAW},
162 /* Bayer formats - see http://www.siliconimaging.com/RGB%20Bayer.htm */
163 {V4L2_PIX_FMT_SBGGR8, TRUE, GST_V4L2_CODEC},
164 {V4L2_PIX_FMT_SGBRG8, TRUE, GST_V4L2_CODEC},
165 {V4L2_PIX_FMT_SGRBG8, TRUE, GST_V4L2_CODEC},
166 {V4L2_PIX_FMT_SRGGB8, TRUE, GST_V4L2_CODEC},
168 /* compressed formats */
169 {V4L2_PIX_FMT_MJPEG, FALSE, GST_V4L2_CODEC},
170 {V4L2_PIX_FMT_JPEG, FALSE, GST_V4L2_CODEC},
171 {V4L2_PIX_FMT_PJPG, FALSE, GST_V4L2_CODEC},
172 {V4L2_PIX_FMT_DV, FALSE, GST_V4L2_TRANSPORT},
173 {V4L2_PIX_FMT_MPEG, FALSE, GST_V4L2_TRANSPORT},
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_H263, FALSE, GST_V4L2_CODEC},
178 {V4L2_PIX_FMT_MPEG1, FALSE, GST_V4L2_CODEC},
179 {V4L2_PIX_FMT_MPEG2, FALSE, GST_V4L2_CODEC},
180 {V4L2_PIX_FMT_MPEG4, FALSE, GST_V4L2_CODEC},
181 {V4L2_PIX_FMT_XVID, FALSE, GST_V4L2_CODEC},
182 {V4L2_PIX_FMT_VC1_ANNEX_G, FALSE, GST_V4L2_CODEC},
183 {V4L2_PIX_FMT_VC1_ANNEX_L, FALSE, GST_V4L2_CODEC},
184 {V4L2_PIX_FMT_VP8, FALSE, GST_V4L2_CODEC | GST_V4L2_NO_PARSE},
186 /* Vendor-specific formats */
187 {V4L2_PIX_FMT_WNVA, TRUE, GST_V4L2_CODEC},
188 {V4L2_PIX_FMT_SN9C10X, TRUE, GST_V4L2_CODEC},
189 {V4L2_PIX_FMT_PWC1, TRUE, GST_V4L2_CODEC},
190 {V4L2_PIX_FMT_PWC2, TRUE, GST_V4L2_CODEC},
193 #define GST_V4L2_FORMAT_COUNT (G_N_ELEMENTS (gst_v4l2_formats))
195 static GSList *gst_v4l2_object_get_format_list (GstV4l2Object * v4l2object);
198 #define GST_TYPE_V4L2_DEVICE_FLAGS (gst_v4l2_device_get_type ())
200 gst_v4l2_device_get_type (void)
202 static GType v4l2_device_type = 0;
204 if (v4l2_device_type == 0) {
205 static const GFlagsValue values[] = {
206 {V4L2_CAP_VIDEO_CAPTURE, "Device supports video capture", "capture"},
207 {V4L2_CAP_VIDEO_OUTPUT, "Device supports video playback", "output"},
208 {V4L2_CAP_VIDEO_OVERLAY, "Device supports video overlay", "overlay"},
210 {V4L2_CAP_VBI_CAPTURE, "Device supports the VBI capture", "vbi-capture"},
211 {V4L2_CAP_VBI_OUTPUT, "Device supports the VBI output", "vbi-output"},
213 {V4L2_CAP_TUNER, "Device has a tuner or modulator", "tuner"},
214 {V4L2_CAP_AUDIO, "Device has audio inputs or outputs", "audio"},
220 g_flags_register_static ("GstV4l2DeviceTypeFlags", values);
223 return v4l2_device_type;
226 #define GST_TYPE_V4L2_TV_NORM (gst_v4l2_tv_norm_get_type ())
228 gst_v4l2_tv_norm_get_type (void)
230 static GType v4l2_tv_norm = 0;
233 static const GEnumValue tv_norms[] = {
236 {V4L2_STD_NTSC, "NTSC", "NTSC"},
237 {V4L2_STD_NTSC_M, "NTSC-M", "NTSC-M"},
238 {V4L2_STD_NTSC_M_JP, "NTSC-M-JP", "NTSC-M-JP"},
239 {V4L2_STD_NTSC_M_KR, "NTSC-M-KR", "NTSC-M-KR"},
240 {V4L2_STD_NTSC_443, "NTSC-443", "NTSC-443"},
242 {V4L2_STD_PAL, "PAL", "PAL"},
243 {V4L2_STD_PAL_BG, "PAL-BG", "PAL-BG"},
244 {V4L2_STD_PAL_B, "PAL-B", "PAL-B"},
245 {V4L2_STD_PAL_B1, "PAL-B1", "PAL-B1"},
246 {V4L2_STD_PAL_G, "PAL-G", "PAL-G"},
247 {V4L2_STD_PAL_H, "PAL-H", "PAL-H"},
248 {V4L2_STD_PAL_I, "PAL-I", "PAL-I"},
249 {V4L2_STD_PAL_DK, "PAL-DK", "PAL-DK"},
250 {V4L2_STD_PAL_D, "PAL-D", "PAL-D"},
251 {V4L2_STD_PAL_D1, "PAL-D1", "PAL-D1"},
252 {V4L2_STD_PAL_K, "PAL-K", "PAL-K"},
253 {V4L2_STD_PAL_M, "PAL-M", "PAL-M"},
254 {V4L2_STD_PAL_N, "PAL-N", "PAL-N"},
255 {V4L2_STD_PAL_Nc, "PAL-Nc", "PAL-Nc"},
256 {V4L2_STD_PAL_60, "PAL-60", "PAL-60"},
258 {V4L2_STD_SECAM, "SECAM", "SECAM"},
259 {V4L2_STD_SECAM_B, "SECAM-B", "SECAM-B"},
260 {V4L2_STD_SECAM_G, "SECAM-G", "SECAM-G"},
261 {V4L2_STD_SECAM_H, "SECAM-H", "SECAM-H"},
262 {V4L2_STD_SECAM_DK, "SECAM-DK", "SECAM-DK"},
263 {V4L2_STD_SECAM_D, "SECAM-D", "SECAM-D"},
264 {V4L2_STD_SECAM_K, "SECAM-K", "SECAM-K"},
265 {V4L2_STD_SECAM_K1, "SECAM-K1", "SECAM-K1"},
266 {V4L2_STD_SECAM_L, "SECAM-L", "SECAM-L"},
267 {V4L2_STD_SECAM_LC, "SECAM-Lc", "SECAM-Lc"},
272 v4l2_tv_norm = g_enum_register_static ("V4L2_TV_norms", tv_norms);
279 gst_v4l2_io_mode_get_type (void)
281 static GType v4l2_io_mode = 0;
284 static const GEnumValue io_modes[] = {
285 {GST_V4L2_IO_AUTO, "GST_V4L2_IO_AUTO", "auto"},
286 {GST_V4L2_IO_RW, "GST_V4L2_IO_RW", "rw"},
287 {GST_V4L2_IO_MMAP, "GST_V4L2_IO_MMAP", "mmap"},
288 {GST_V4L2_IO_USERPTR, "GST_V4L2_IO_USERPTR", "userptr"},
289 {GST_V4L2_IO_DMABUF, "GST_V4L2_IO_DMABUF", "dmabuf"},
290 {GST_V4L2_IO_DMABUF_IMPORT, "GST_V4L2_IO_DMABUF_IMPORT",
295 v4l2_io_mode = g_enum_register_static ("GstV4l2IOMode", io_modes);
301 gst_v4l2_object_install_properties_helper (GObjectClass * gobject_class,
302 const char *default_device)
304 g_object_class_install_property (gobject_class, PROP_DEVICE,
305 g_param_spec_string ("device", "Device", "Device location",
306 default_device, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
307 g_object_class_install_property (gobject_class, PROP_DEVICE_NAME,
308 g_param_spec_string ("device-name", "Device name",
309 "Name of the device", DEFAULT_PROP_DEVICE_NAME,
310 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
311 g_object_class_install_property (gobject_class, PROP_DEVICE_FD,
312 g_param_spec_int ("device-fd", "File descriptor",
313 "File descriptor of the device", -1, G_MAXINT, DEFAULT_PROP_DEVICE_FD,
314 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
315 g_object_class_install_property (gobject_class, PROP_FLAGS,
316 g_param_spec_flags ("flags", "Flags", "Device type flags",
317 GST_TYPE_V4L2_DEVICE_FLAGS, DEFAULT_PROP_FLAGS,
318 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
321 * GstV4l2Src:brightness:
323 * Picture brightness, or more precisely, the black level
325 g_object_class_install_property (gobject_class, PROP_BRIGHTNESS,
326 g_param_spec_int ("brightness", "Brightness",
327 "Picture brightness, or more precisely, the black level", G_MININT,
329 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
331 * GstV4l2Src:contrast:
333 * Picture contrast or luma gain
335 g_object_class_install_property (gobject_class, PROP_CONTRAST,
336 g_param_spec_int ("contrast", "Contrast",
337 "Picture contrast or luma gain", G_MININT,
339 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
341 * GstV4l2Src:saturation:
343 * Picture color saturation or chroma gain
345 g_object_class_install_property (gobject_class, PROP_SATURATION,
346 g_param_spec_int ("saturation", "Saturation",
347 "Picture color saturation or chroma gain", G_MININT,
349 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
353 * Hue or color balance
355 g_object_class_install_property (gobject_class, PROP_HUE,
356 g_param_spec_int ("hue", "Hue",
357 "Hue or color balance", G_MININT,
359 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
366 g_object_class_install_property (gobject_class, PROP_TV_NORM,
367 g_param_spec_enum ("norm", "TV norm",
369 GST_TYPE_V4L2_TV_NORM, DEFAULT_PROP_TV_NORM,
370 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
373 * GstV4l2Src:io-mode:
377 g_object_class_install_property (gobject_class, PROP_IO_MODE,
378 g_param_spec_enum ("io-mode", "IO mode",
380 GST_TYPE_V4L2_IO_MODE, DEFAULT_PROP_IO_MODE,
381 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
384 * GstV4l2Src:extra-controls:
386 * Additional v4l2 controls for the device. The controls are identified
387 * by the control name (lowercase with '_' for any non-alphanumeric
392 g_object_class_install_property (gobject_class, PROP_EXTRA_CONTROLS,
393 g_param_spec_boxed ("extra-controls", "Extra Controls",
394 "Extra v4l2 controls (CIDs) for the device",
395 GST_TYPE_STRUCTURE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
398 * GstV4l2Src:pixel-aspect-ratio:
400 * The pixel aspect ratio of the device. This overwrites the pixel aspect
401 * ratio queried from the device.
405 g_object_class_install_property (gobject_class, PROP_PIXEL_ASPECT_RATIO,
406 g_param_spec_string ("pixel-aspect-ratio", "Pixel Aspect Ratio",
407 "Overwrite the pixel aspect ratio of the device", "1/1",
408 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
411 * GstV4l2Src:force-aspect-ratio:
413 * When enabled, the pixel aspect ratio queried from the device or set
414 * with the pixel-aspect-ratio property will be enforced.
418 g_object_class_install_property (gobject_class, PROP_FORCE_ASPECT_RATIO,
419 g_param_spec_boolean ("force-aspect-ratio", "Force aspect ratio",
420 "When enabled, the pixel aspect ratio will be enforced", TRUE,
421 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
426 gst_v4l2_object_install_m2m_properties_helper (GObjectClass * gobject_class)
428 g_object_class_install_property (gobject_class, PROP_DEVICE,
429 g_param_spec_string ("device", "Device", "Device location",
430 NULL, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
432 g_object_class_install_property (gobject_class, PROP_DEVICE_NAME,
433 g_param_spec_string ("device-name", "Device name",
434 "Name of the device", DEFAULT_PROP_DEVICE_NAME,
435 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
437 g_object_class_install_property (gobject_class, PROP_DEVICE_FD,
438 g_param_spec_int ("device-fd", "File descriptor",
439 "File descriptor of the device", -1, G_MAXINT, DEFAULT_PROP_DEVICE_FD,
440 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
442 g_object_class_install_property (gobject_class, PROP_OUTPUT_IO_MODE,
443 g_param_spec_enum ("output-io-mode", "Output IO mode",
444 "Output side I/O mode (matches sink pad)",
445 GST_TYPE_V4L2_IO_MODE, DEFAULT_PROP_IO_MODE,
446 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
448 g_object_class_install_property (gobject_class, PROP_CAPTURE_IO_MODE,
449 g_param_spec_enum ("capture-io-mode", "Capture IO mode",
450 "Capture I/O mode (matches src pad)",
451 GST_TYPE_V4L2_IO_MODE, DEFAULT_PROP_IO_MODE,
452 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
454 g_object_class_install_property (gobject_class, PROP_EXTRA_CONTROLS,
455 g_param_spec_boxed ("extra-controls", "Extra Controls",
456 "Extra v4l2 controls (CIDs) for the device",
457 GST_TYPE_STRUCTURE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
461 gst_v4l2_object_new (GstElement * element,
462 enum v4l2_buf_type type,
463 const char *default_device,
464 GstV4l2GetInOutFunction get_in_out_func,
465 GstV4l2SetInOutFunction set_in_out_func,
466 GstV4l2UpdateFpsFunction update_fps_func)
468 GstV4l2Object *v4l2object;
471 * some default values
473 v4l2object = g_new0 (GstV4l2Object, 1);
475 v4l2object->type = type;
476 v4l2object->formats = NULL;
478 v4l2object->element = element;
479 v4l2object->get_in_out_func = get_in_out_func;
480 v4l2object->set_in_out_func = set_in_out_func;
481 v4l2object->update_fps_func = update_fps_func;
483 v4l2object->video_fd = -1;
484 v4l2object->active = FALSE;
485 v4l2object->videodev = g_strdup (default_device);
487 v4l2object->norms = NULL;
488 v4l2object->channels = NULL;
489 v4l2object->colors = NULL;
491 v4l2object->xwindow_id = 0;
493 v4l2object->keep_aspect = TRUE;
495 v4l2object->n_v4l2_planes = 0;
497 v4l2object->no_initial_format = FALSE;
502 static gboolean gst_v4l2_object_clear_format_list (GstV4l2Object * v4l2object);
506 gst_v4l2_object_destroy (GstV4l2Object * v4l2object)
508 g_return_if_fail (v4l2object != NULL);
510 g_free (v4l2object->videodev);
512 g_free (v4l2object->channel);
514 if (v4l2object->formats) {
515 gst_v4l2_object_clear_format_list (v4l2object);
518 if (v4l2object->probed_caps) {
519 gst_caps_unref (v4l2object->probed_caps);
527 gst_v4l2_object_clear_format_list (GstV4l2Object * v4l2object)
529 g_slist_foreach (v4l2object->formats, (GFunc) g_free, NULL);
530 g_slist_free (v4l2object->formats);
531 v4l2object->formats = NULL;
537 gst_v4l2_object_prop_to_cid (guint prop_id)
542 case PROP_BRIGHTNESS:
543 cid = V4L2_CID_BRIGHTNESS;
546 cid = V4L2_CID_CONTRAST;
548 case PROP_SATURATION:
549 cid = V4L2_CID_SATURATION;
555 GST_WARNING ("unmapped property id: %d", prop_id);
562 gst_v4l2_object_set_property_helper (GstV4l2Object * v4l2object,
563 guint prop_id, const GValue * value, GParamSpec * pspec)
567 g_free (v4l2object->videodev);
568 v4l2object->videodev = g_value_dup_string (value);
570 case PROP_BRIGHTNESS:
572 case PROP_SATURATION:
575 gint cid = gst_v4l2_object_prop_to_cid (prop_id);
578 if (GST_V4L2_IS_OPEN (v4l2object)) {
579 gst_v4l2_set_attribute (v4l2object, cid, g_value_get_int (value));
586 v4l2object->tv_norm = g_value_get_enum (value);
590 if (GST_V4L2_IS_OPEN (v4l2object)) {
591 GstTuner *tuner = GST_TUNER (v4l2object->element);
592 GstTunerChannel *channel = gst_tuner_find_channel_by_name (tuner,
593 (gchar *) g_value_get_string (value));
596 /* like gst_tuner_set_channel (tuner, channel)
597 without g_object_notify */
598 gst_v4l2_tuner_set_channel (v4l2object, channel);
601 g_free (v4l2object->channel);
602 v4l2object->channel = g_value_dup_string (value);
606 if (GST_V4L2_IS_OPEN (v4l2object)) {
607 GstTuner *tuner = GST_TUNER (v4l2object->element);
608 GstTunerChannel *channel = gst_tuner_get_channel (tuner);
611 GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
613 gst_tuner_set_frequency (tuner, channel, g_value_get_ulong (value))
614 without g_object_notify */
615 gst_v4l2_tuner_set_frequency (v4l2object, channel,
616 g_value_get_ulong (value));
619 v4l2object->frequency = g_value_get_ulong (value);
625 v4l2object->req_mode = g_value_get_enum (value);
627 case PROP_CAPTURE_IO_MODE:
628 g_return_val_if_fail (!V4L2_TYPE_IS_OUTPUT (v4l2object->type), FALSE);
629 v4l2object->req_mode = g_value_get_enum (value);
631 case PROP_OUTPUT_IO_MODE:
632 g_return_val_if_fail (V4L2_TYPE_IS_OUTPUT (v4l2object->type), FALSE);
633 v4l2object->req_mode = g_value_get_enum (value);
635 case PROP_EXTRA_CONTROLS:{
636 const GstStructure *s = gst_value_get_structure (value);
638 if (v4l2object->extra_controls)
639 gst_structure_free (v4l2object->extra_controls);
641 v4l2object->extra_controls = s ? gst_structure_copy (s) : NULL;
642 if (GST_V4L2_IS_OPEN (v4l2object))
643 gst_v4l2_set_controls (v4l2object, v4l2object->extra_controls);
646 case PROP_PIXEL_ASPECT_RATIO:
647 g_free (v4l2object->par);
648 v4l2object->par = g_new0 (GValue, 1);
649 g_value_init (v4l2object->par, GST_TYPE_FRACTION);
650 if (!g_value_transform (value, v4l2object->par)) {
651 g_warning ("Could not transform string to aspect ratio");
652 gst_value_set_fraction (v4l2object->par, 1, 1);
654 GST_DEBUG_OBJECT (v4l2object->element, "set PAR to %d/%d",
655 gst_value_get_fraction_numerator (v4l2object->par),
656 gst_value_get_fraction_denominator (v4l2object->par));
658 case PROP_FORCE_ASPECT_RATIO:
659 v4l2object->keep_aspect = g_value_get_boolean (value);
670 gst_v4l2_object_get_property_helper (GstV4l2Object * v4l2object,
671 guint prop_id, GValue * value, GParamSpec * pspec)
675 g_value_set_string (value, v4l2object->videodev);
677 case PROP_DEVICE_NAME:
679 const guchar *new = NULL;
681 if (GST_V4L2_IS_OPEN (v4l2object)) {
682 new = v4l2object->vcap.card;
683 } else if (gst_v4l2_open (v4l2object)) {
684 new = v4l2object->vcap.card;
685 gst_v4l2_close (v4l2object);
687 g_value_set_string (value, (gchar *) new);
692 if (GST_V4L2_IS_OPEN (v4l2object))
693 g_value_set_int (value, v4l2object->video_fd);
695 g_value_set_int (value, DEFAULT_PROP_DEVICE_FD);
702 if (GST_V4L2_IS_OPEN (v4l2object)) {
703 flags |= v4l2object->vcap.capabilities &
704 (V4L2_CAP_VIDEO_CAPTURE |
705 V4L2_CAP_VIDEO_OUTPUT |
706 V4L2_CAP_VIDEO_OVERLAY |
707 V4L2_CAP_VBI_CAPTURE |
708 V4L2_CAP_VBI_OUTPUT | V4L2_CAP_TUNER | V4L2_CAP_AUDIO);
710 if (v4l2object->vcap.capabilities & V4L2_CAP_VIDEO_CAPTURE_MPLANE)
711 flags |= V4L2_CAP_VIDEO_CAPTURE;
713 if (v4l2object->vcap.capabilities & V4L2_CAP_VIDEO_OUTPUT_MPLANE)
714 flags |= V4L2_CAP_VIDEO_OUTPUT;
716 g_value_set_flags (value, flags);
719 case PROP_BRIGHTNESS:
721 case PROP_SATURATION:
724 gint cid = gst_v4l2_object_prop_to_cid (prop_id);
727 if (GST_V4L2_IS_OPEN (v4l2object)) {
729 if (gst_v4l2_get_attribute (v4l2object, cid, &v)) {
730 g_value_set_int (value, v);
738 g_value_set_enum (value, v4l2object->tv_norm);
741 g_value_set_enum (value, v4l2object->req_mode);
743 case PROP_CAPTURE_IO_MODE:
744 g_return_val_if_fail (!V4L2_TYPE_IS_OUTPUT (v4l2object->type), FALSE);
745 g_value_set_enum (value, v4l2object->req_mode);
747 case PROP_OUTPUT_IO_MODE:
748 g_return_val_if_fail (V4L2_TYPE_IS_OUTPUT (v4l2object->type), FALSE);
749 g_value_set_enum (value, v4l2object->req_mode);
751 case PROP_EXTRA_CONTROLS:
752 gst_value_set_structure (value, v4l2object->extra_controls);
754 case PROP_PIXEL_ASPECT_RATIO:
756 g_value_transform (v4l2object->par, value);
758 case PROP_FORCE_ASPECT_RATIO:
759 g_value_set_boolean (value, v4l2object->keep_aspect);
769 gst_v4l2_get_driver_min_buffers (GstV4l2Object * v4l2object)
771 struct v4l2_control control = { 0, };
773 g_return_if_fail (GST_V4L2_IS_OPEN (v4l2object));
775 if (V4L2_TYPE_IS_OUTPUT (v4l2object->type))
776 control.id = V4L2_CID_MIN_BUFFERS_FOR_OUTPUT;
778 control.id = V4L2_CID_MIN_BUFFERS_FOR_CAPTURE;
780 if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_G_CTRL, &control) == 0) {
781 GST_DEBUG_OBJECT (v4l2object->element,
782 "driver requires a minimum of %d buffers", control.value);
783 v4l2object->min_buffers = control.value;
785 v4l2object->min_buffers = 0;
790 gst_v4l2_set_defaults (GstV4l2Object * v4l2object)
792 GstTunerNorm *norm = NULL;
793 GstTunerChannel *channel = NULL;
796 if (!GST_IS_TUNER (v4l2object->element))
799 tuner = GST_TUNER (v4l2object->element);
801 if (v4l2object->tv_norm)
802 norm = gst_v4l2_tuner_get_norm_by_std_id (v4l2object, v4l2object->tv_norm);
803 GST_DEBUG_OBJECT (v4l2object->element, "tv_norm=0x%" G_GINT64_MODIFIER "x, "
804 "norm=%p", (guint64) v4l2object->tv_norm, norm);
806 gst_tuner_set_norm (tuner, norm);
809 GST_TUNER_NORM (gst_tuner_get_norm (GST_TUNER (v4l2object->element)));
811 v4l2object->tv_norm =
812 gst_v4l2_tuner_get_std_id_by_norm (v4l2object, norm);
813 gst_tuner_norm_changed (tuner, norm);
817 if (v4l2object->channel)
818 channel = gst_tuner_find_channel_by_name (tuner, v4l2object->channel);
820 gst_tuner_set_channel (tuner, channel);
823 GST_TUNER_CHANNEL (gst_tuner_get_channel (GST_TUNER
824 (v4l2object->element)));
826 g_free (v4l2object->channel);
827 v4l2object->channel = g_strdup (channel->label);
828 gst_tuner_channel_changed (tuner, channel);
833 && GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
834 if (v4l2object->frequency != 0) {
835 gst_tuner_set_frequency (tuner, channel, v4l2object->frequency);
837 v4l2object->frequency = gst_tuner_get_frequency (tuner, channel);
838 if (v4l2object->frequency == 0) {
840 gst_tuner_set_frequency (tuner, channel, 1000);
848 gst_v4l2_object_open (GstV4l2Object * v4l2object)
850 if (gst_v4l2_open (v4l2object))
851 gst_v4l2_set_defaults (v4l2object);
859 gst_v4l2_object_open_shared (GstV4l2Object * v4l2object, GstV4l2Object * other)
863 ret = gst_v4l2_dup (v4l2object, other);
869 gst_v4l2_object_close (GstV4l2Object * v4l2object)
871 if (!gst_v4l2_close (v4l2object))
874 gst_caps_replace (&v4l2object->probed_caps, NULL);
876 if (v4l2object->formats) {
877 gst_v4l2_object_clear_format_list (v4l2object);
883 static struct v4l2_fmtdesc *
884 gst_v4l2_object_get_format_from_fourcc (GstV4l2Object * v4l2object,
887 struct v4l2_fmtdesc *fmt;
893 walk = gst_v4l2_object_get_format_list (v4l2object);
895 fmt = (struct v4l2_fmtdesc *) walk->data;
896 if (fmt->pixelformat == fourcc)
898 /* special case for jpeg */
899 if (fmt->pixelformat == V4L2_PIX_FMT_MJPEG ||
900 fmt->pixelformat == V4L2_PIX_FMT_JPEG ||
901 fmt->pixelformat == V4L2_PIX_FMT_PJPG) {
902 if (fourcc == V4L2_PIX_FMT_JPEG || fourcc == V4L2_PIX_FMT_MJPEG ||
903 fourcc == V4L2_PIX_FMT_PJPG) {
907 walk = g_slist_next (walk);
915 /* complete made up ranking, the values themselves are meaningless */
916 /* These ranks MUST be X such that X<<15 fits on a signed int - see
917 the comment at the end of gst_v4l2_object_format_get_rank. */
918 #define YUV_BASE_RANK 1000
919 #define JPEG_BASE_RANK 500
920 #define DV_BASE_RANK 200
921 #define RGB_BASE_RANK 100
922 #define YUV_ODD_BASE_RANK 50
923 #define RGB_ODD_BASE_RANK 25
924 #define BAYER_BASE_RANK 15
925 #define S910_BASE_RANK 10
926 #define GREY_BASE_RANK 5
927 #define PWC_BASE_RANK 1
930 gst_v4l2_object_format_get_rank (const struct v4l2_fmtdesc *fmt)
932 guint32 fourcc = fmt->pixelformat;
933 gboolean emulated = ((fmt->flags & V4L2_FMT_FLAG_EMULATED) != 0);
937 case V4L2_PIX_FMT_MJPEG:
938 case V4L2_PIX_FMT_PJPG:
939 rank = JPEG_BASE_RANK;
941 case V4L2_PIX_FMT_JPEG:
942 rank = JPEG_BASE_RANK + 1;
944 case V4L2_PIX_FMT_MPEG: /* MPEG */
945 rank = JPEG_BASE_RANK + 2;
948 case V4L2_PIX_FMT_RGB332:
949 case V4L2_PIX_FMT_ARGB555:
950 case V4L2_PIX_FMT_XRGB555:
951 case V4L2_PIX_FMT_RGB555:
952 case V4L2_PIX_FMT_ARGB555X:
953 case V4L2_PIX_FMT_XRGB555X:
954 case V4L2_PIX_FMT_RGB555X:
955 case V4L2_PIX_FMT_BGR666:
956 case V4L2_PIX_FMT_RGB565:
957 case V4L2_PIX_FMT_RGB565X:
958 case V4L2_PIX_FMT_RGB444:
959 case V4L2_PIX_FMT_Y4:
960 case V4L2_PIX_FMT_Y6:
961 case V4L2_PIX_FMT_Y10:
962 case V4L2_PIX_FMT_Y12:
963 case V4L2_PIX_FMT_Y10BPACK:
964 case V4L2_PIX_FMT_YUV555:
965 case V4L2_PIX_FMT_YUV565:
966 case V4L2_PIX_FMT_YUV32:
967 case V4L2_PIX_FMT_NV12MT_16X16:
968 case V4L2_PIX_FMT_NV42:
969 case V4L2_PIX_FMT_H264_MVC:
970 rank = RGB_ODD_BASE_RANK;
973 case V4L2_PIX_FMT_RGB24:
974 case V4L2_PIX_FMT_BGR24:
975 rank = RGB_BASE_RANK - 1;
978 case V4L2_PIX_FMT_RGB32:
979 case V4L2_PIX_FMT_BGR32:
980 case V4L2_PIX_FMT_ABGR32:
981 case V4L2_PIX_FMT_XBGR32:
982 case V4L2_PIX_FMT_ARGB32:
983 case V4L2_PIX_FMT_XRGB32:
984 rank = RGB_BASE_RANK;
987 case V4L2_PIX_FMT_GREY: /* 8 Greyscale */
988 rank = GREY_BASE_RANK;
991 case V4L2_PIX_FMT_NV12: /* 12 Y/CbCr 4:2:0 */
992 case V4L2_PIX_FMT_NV12M: /* Same as NV12 */
993 case V4L2_PIX_FMT_NV12MT: /* NV12 64x32 tile */
994 case V4L2_PIX_FMT_NV21: /* 12 Y/CrCb 4:2:0 */
995 case V4L2_PIX_FMT_NV21M: /* Same as NV21 */
996 case V4L2_PIX_FMT_YYUV: /* 16 YUV 4:2:2 */
997 case V4L2_PIX_FMT_HI240: /* 8 8-bit color */
998 case V4L2_PIX_FMT_NV16: /* 16 Y/CbCr 4:2:2 */
999 case V4L2_PIX_FMT_NV16M: /* Same as NV16 */
1000 case V4L2_PIX_FMT_NV61: /* 16 Y/CrCb 4:2:2 */
1001 case V4L2_PIX_FMT_NV61M: /* Same as NV61 */
1002 case V4L2_PIX_FMT_NV24: /* 24 Y/CrCb 4:4:4 */
1003 rank = YUV_ODD_BASE_RANK;
1006 case V4L2_PIX_FMT_YVU410: /* YVU9, 9 bits per pixel */
1007 rank = YUV_BASE_RANK + 3;
1009 case V4L2_PIX_FMT_YUV410: /* YUV9, 9 bits per pixel */
1010 rank = YUV_BASE_RANK + 2;
1012 case V4L2_PIX_FMT_YUV420: /* I420, 12 bits per pixel */
1013 case V4L2_PIX_FMT_YUV420M:
1014 rank = YUV_BASE_RANK + 7;
1016 case V4L2_PIX_FMT_YUYV: /* YUY2, 16 bits per pixel */
1017 rank = YUV_BASE_RANK + 10;
1019 case V4L2_PIX_FMT_YVU420: /* YV12, 12 bits per pixel */
1020 rank = YUV_BASE_RANK + 6;
1022 case V4L2_PIX_FMT_UYVY: /* UYVY, 16 bits per pixel */
1023 rank = YUV_BASE_RANK + 9;
1025 case V4L2_PIX_FMT_YUV444:
1026 rank = YUV_BASE_RANK + 6;
1028 case V4L2_PIX_FMT_Y41P: /* Y41P, 12 bits per pixel */
1029 rank = YUV_BASE_RANK + 5;
1031 case V4L2_PIX_FMT_YUV411P: /* Y41B, 12 bits per pixel */
1032 rank = YUV_BASE_RANK + 4;
1034 case V4L2_PIX_FMT_YUV422P: /* Y42B, 16 bits per pixel */
1035 rank = YUV_BASE_RANK + 8;
1038 case V4L2_PIX_FMT_DV:
1039 rank = DV_BASE_RANK;
1042 case V4L2_PIX_FMT_WNVA: /* Winnov hw compres */
1046 case V4L2_PIX_FMT_SBGGR8:
1047 case V4L2_PIX_FMT_SGBRG8:
1048 case V4L2_PIX_FMT_SGRBG8:
1049 case V4L2_PIX_FMT_SRGGB8:
1050 rank = BAYER_BASE_RANK;
1053 case V4L2_PIX_FMT_SN9C10X:
1054 rank = S910_BASE_RANK;
1057 case V4L2_PIX_FMT_PWC1:
1058 rank = PWC_BASE_RANK;
1060 case V4L2_PIX_FMT_PWC2:
1061 rank = PWC_BASE_RANK;
1069 /* All ranks are below 1<<15 so a shift by 15
1070 * will a) make all non-emulated formats larger
1071 * than emulated and b) will not overflow
1082 format_cmp_func (gconstpointer a, gconstpointer b)
1084 const struct v4l2_fmtdesc *fa = a;
1085 const struct v4l2_fmtdesc *fb = b;
1087 if (fa->pixelformat == fb->pixelformat)
1090 return gst_v4l2_object_format_get_rank (fb) -
1091 gst_v4l2_object_format_get_rank (fa);
1094 /******************************************************
1095 * gst_v4l2_object_fill_format_list():
1096 * create list of supported capture formats
1097 * return value: TRUE on success, FALSE on error
1098 ******************************************************/
1100 gst_v4l2_object_fill_format_list (GstV4l2Object * v4l2object,
1101 enum v4l2_buf_type type)
1104 struct v4l2_fmtdesc *format;
1106 GST_DEBUG_OBJECT (v4l2object->element, "getting src format enumerations");
1108 /* format enumeration */
1110 format = g_new0 (struct v4l2_fmtdesc, 1);
1113 format->type = type;
1115 if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_ENUM_FMT, format) < 0) {
1116 if (errno == EINVAL) {
1118 break; /* end of enumeration */
1124 GST_LOG_OBJECT (v4l2object->element, "index: %u", format->index);
1125 GST_LOG_OBJECT (v4l2object->element, "type: %d", format->type);
1126 GST_LOG_OBJECT (v4l2object->element, "flags: %08x", format->flags);
1127 GST_LOG_OBJECT (v4l2object->element, "description: '%s'",
1128 format->description);
1129 GST_LOG_OBJECT (v4l2object->element, "pixelformat: %" GST_FOURCC_FORMAT,
1130 GST_FOURCC_ARGS (format->pixelformat));
1132 /* sort formats according to our preference; we do this, because caps
1133 * are probed in the order the formats are in the list, and the order of
1134 * formats in the final probed caps matters for things like fixation */
1135 v4l2object->formats = g_slist_insert_sorted (v4l2object->formats, format,
1136 (GCompareFunc) format_cmp_func);
1139 #ifndef GST_DISABLE_GST_DEBUG
1143 GST_INFO_OBJECT (v4l2object->element, "got %d format(s):", n);
1144 for (l = v4l2object->formats; l != NULL; l = l->next) {
1147 GST_INFO_OBJECT (v4l2object->element,
1148 " %" GST_FOURCC_FORMAT "%s", GST_FOURCC_ARGS (format->pixelformat),
1149 ((format->flags & V4L2_FMT_FLAG_EMULATED)) ? " (emulated)" : "");
1159 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
1160 (_("Failed to enumerate possible video formats device '%s' can work with"), v4l2object->videodev), ("Failed to get number %d in pixelformat enumeration for %s. (%d - %s)", n, v4l2object->videodev, errno, g_strerror (errno)));
1167 * Get the list of supported capture formats, a list of
1168 * <code>struct v4l2_fmtdesc</code>.
1171 gst_v4l2_object_get_format_list (GstV4l2Object * v4l2object)
1173 if (!v4l2object->formats) {
1175 /* check usual way */
1176 gst_v4l2_object_fill_format_list (v4l2object, v4l2object->type);
1178 /* if our driver supports multi-planar
1179 * and if formats are still empty then we can workaround driver bug
1180 * by also looking up formats as if our device was not supporting
1182 if (!v4l2object->formats) {
1183 switch (v4l2object->type) {
1184 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1185 gst_v4l2_object_fill_format_list (v4l2object,
1186 V4L2_BUF_TYPE_VIDEO_CAPTURE);
1189 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1190 gst_v4l2_object_fill_format_list (v4l2object,
1191 V4L2_BUF_TYPE_VIDEO_OUTPUT);
1199 return v4l2object->formats;
1202 static GstVideoFormat
1203 gst_v4l2_object_v4l2fourcc_to_video_format (guint32 fourcc)
1205 GstVideoFormat format;
1208 case V4L2_PIX_FMT_GREY: /* 8 Greyscale */
1209 format = GST_VIDEO_FORMAT_GRAY8;
1211 case V4L2_PIX_FMT_Y16:
1212 format = GST_VIDEO_FORMAT_GRAY16_LE;
1214 case V4L2_PIX_FMT_Y16_BE:
1215 format = GST_VIDEO_FORMAT_GRAY16_BE;
1217 case V4L2_PIX_FMT_XRGB555:
1218 case V4L2_PIX_FMT_RGB555:
1219 format = GST_VIDEO_FORMAT_RGB15;
1221 case V4L2_PIX_FMT_XRGB555X:
1222 case V4L2_PIX_FMT_RGB555X:
1223 format = GST_VIDEO_FORMAT_BGR15;
1225 case V4L2_PIX_FMT_RGB565:
1226 format = GST_VIDEO_FORMAT_RGB16;
1228 case V4L2_PIX_FMT_RGB24:
1229 format = GST_VIDEO_FORMAT_RGB;
1231 case V4L2_PIX_FMT_BGR24:
1232 format = GST_VIDEO_FORMAT_BGR;
1234 case V4L2_PIX_FMT_XRGB32:
1235 case V4L2_PIX_FMT_RGB32:
1236 format = GST_VIDEO_FORMAT_xRGB;
1238 case V4L2_PIX_FMT_XBGR32:
1239 case V4L2_PIX_FMT_BGR32:
1240 format = GST_VIDEO_FORMAT_BGRx;
1242 case V4L2_PIX_FMT_ABGR32:
1243 format = GST_VIDEO_FORMAT_BGRA;
1245 case V4L2_PIX_FMT_ARGB32:
1246 format = GST_VIDEO_FORMAT_ARGB;
1248 case V4L2_PIX_FMT_NV12:
1249 case V4L2_PIX_FMT_NV12M:
1250 format = GST_VIDEO_FORMAT_NV12;
1252 case V4L2_PIX_FMT_NV12MT:
1253 format = GST_VIDEO_FORMAT_NV12_64Z32;
1255 case V4L2_PIX_FMT_NV21:
1256 case V4L2_PIX_FMT_NV21M:
1257 format = GST_VIDEO_FORMAT_NV21;
1259 case V4L2_PIX_FMT_YVU410:
1260 format = GST_VIDEO_FORMAT_YVU9;
1262 case V4L2_PIX_FMT_YUV410:
1263 format = GST_VIDEO_FORMAT_YUV9;
1265 case V4L2_PIX_FMT_YUV420:
1266 case V4L2_PIX_FMT_YUV420M:
1267 format = GST_VIDEO_FORMAT_I420;
1269 case V4L2_PIX_FMT_YUYV:
1270 format = GST_VIDEO_FORMAT_YUY2;
1272 case V4L2_PIX_FMT_YVU420:
1273 format = GST_VIDEO_FORMAT_YV12;
1275 case V4L2_PIX_FMT_UYVY:
1276 format = GST_VIDEO_FORMAT_UYVY;
1278 case V4L2_PIX_FMT_YUV411P:
1279 format = GST_VIDEO_FORMAT_Y41B;
1281 case V4L2_PIX_FMT_YUV422P:
1282 format = GST_VIDEO_FORMAT_Y42B;
1284 case V4L2_PIX_FMT_YVYU:
1285 format = GST_VIDEO_FORMAT_YVYU;
1287 case V4L2_PIX_FMT_NV16:
1288 case V4L2_PIX_FMT_NV16M:
1289 format = GST_VIDEO_FORMAT_NV16;
1291 case V4L2_PIX_FMT_NV61:
1292 case V4L2_PIX_FMT_NV61M:
1293 format = GST_VIDEO_FORMAT_NV61;
1295 case V4L2_PIX_FMT_NV24:
1296 format = GST_VIDEO_FORMAT_NV24;
1299 format = GST_VIDEO_FORMAT_UNKNOWN;
1307 gst_v4l2_object_v4l2fourcc_is_rgb (guint32 fourcc)
1309 gboolean ret = FALSE;
1312 case V4L2_PIX_FMT_XRGB555:
1313 case V4L2_PIX_FMT_RGB555:
1314 case V4L2_PIX_FMT_XRGB555X:
1315 case V4L2_PIX_FMT_RGB555X:
1316 case V4L2_PIX_FMT_RGB565:
1317 case V4L2_PIX_FMT_RGB24:
1318 case V4L2_PIX_FMT_BGR24:
1319 case V4L2_PIX_FMT_XRGB32:
1320 case V4L2_PIX_FMT_RGB32:
1321 case V4L2_PIX_FMT_XBGR32:
1322 case V4L2_PIX_FMT_BGR32:
1323 case V4L2_PIX_FMT_ABGR32:
1324 case V4L2_PIX_FMT_ARGB32:
1334 static GstStructure *
1335 gst_v4l2_object_v4l2fourcc_to_bare_struct (guint32 fourcc)
1337 GstStructure *structure = NULL;
1340 case V4L2_PIX_FMT_MJPEG: /* Motion-JPEG */
1341 case V4L2_PIX_FMT_PJPG: /* Progressive-JPEG */
1342 case V4L2_PIX_FMT_JPEG: /* JFIF JPEG */
1343 structure = gst_structure_new_empty ("image/jpeg");
1345 case V4L2_PIX_FMT_MPEG1:
1346 structure = gst_structure_new ("video/mpeg",
1347 "mpegversion", G_TYPE_INT, 2, NULL);
1349 case V4L2_PIX_FMT_MPEG2:
1350 structure = gst_structure_new ("video/mpeg",
1351 "mpegversion", G_TYPE_INT, 2, NULL);
1353 case V4L2_PIX_FMT_MPEG4:
1354 case V4L2_PIX_FMT_XVID:
1355 structure = gst_structure_new ("video/mpeg",
1356 "mpegversion", G_TYPE_INT, 4, "systemstream",
1357 G_TYPE_BOOLEAN, FALSE, NULL);
1359 case V4L2_PIX_FMT_H263:
1360 structure = gst_structure_new ("video/x-h263",
1361 "variant", G_TYPE_STRING, "itu", NULL);
1363 case V4L2_PIX_FMT_H264: /* H.264 */
1364 structure = gst_structure_new ("video/x-h264",
1365 "stream-format", G_TYPE_STRING, "byte-stream", "alignment",
1366 G_TYPE_STRING, "au", NULL);
1368 case V4L2_PIX_FMT_H264_NO_SC:
1369 structure = gst_structure_new ("video/x-h264",
1370 "stream-format", G_TYPE_STRING, "avc", "alignment",
1371 G_TYPE_STRING, "au", NULL);
1373 case V4L2_PIX_FMT_VC1_ANNEX_G:
1374 case V4L2_PIX_FMT_VC1_ANNEX_L:
1375 structure = gst_structure_new ("video/x-wmv",
1376 "wmvversion", G_TYPE_INT, 3, "format", G_TYPE_STRING, "WVC1", NULL);
1378 case V4L2_PIX_FMT_VP8:
1379 structure = gst_structure_new_empty ("video/x-vp8");
1381 case V4L2_PIX_FMT_GREY: /* 8 Greyscale */
1382 case V4L2_PIX_FMT_Y16:
1383 case V4L2_PIX_FMT_Y16_BE:
1384 case V4L2_PIX_FMT_XRGB555:
1385 case V4L2_PIX_FMT_RGB555:
1386 case V4L2_PIX_FMT_XRGB555X:
1387 case V4L2_PIX_FMT_RGB555X:
1388 case V4L2_PIX_FMT_RGB565:
1389 case V4L2_PIX_FMT_RGB24:
1390 case V4L2_PIX_FMT_BGR24:
1391 case V4L2_PIX_FMT_RGB32:
1392 case V4L2_PIX_FMT_XRGB32:
1393 case V4L2_PIX_FMT_ARGB32:
1394 case V4L2_PIX_FMT_BGR32:
1395 case V4L2_PIX_FMT_XBGR32:
1396 case V4L2_PIX_FMT_ABGR32:
1397 case V4L2_PIX_FMT_NV12: /* 12 Y/CbCr 4:2:0 */
1398 case V4L2_PIX_FMT_NV12M:
1399 case V4L2_PIX_FMT_NV12MT:
1400 case V4L2_PIX_FMT_NV21: /* 12 Y/CrCb 4:2:0 */
1401 case V4L2_PIX_FMT_NV21M:
1402 case V4L2_PIX_FMT_NV16: /* 16 Y/CbCr 4:2:2 */
1403 case V4L2_PIX_FMT_NV16M:
1404 case V4L2_PIX_FMT_NV61: /* 16 Y/CrCb 4:2:2 */
1405 case V4L2_PIX_FMT_NV61M:
1406 case V4L2_PIX_FMT_NV24: /* 24 Y/CrCb 4:4:4 */
1407 case V4L2_PIX_FMT_YVU410:
1408 case V4L2_PIX_FMT_YUV410:
1409 case V4L2_PIX_FMT_YUV420: /* I420/IYUV */
1410 case V4L2_PIX_FMT_YUV420M:
1411 case V4L2_PIX_FMT_YUYV:
1412 case V4L2_PIX_FMT_YVU420:
1413 case V4L2_PIX_FMT_UYVY:
1414 case V4L2_PIX_FMT_YUV422P:
1415 case V4L2_PIX_FMT_YVYU:
1416 case V4L2_PIX_FMT_YUV411P:{
1417 GstVideoFormat format;
1418 format = gst_v4l2_object_v4l2fourcc_to_video_format (fourcc);
1419 if (format != GST_VIDEO_FORMAT_UNKNOWN)
1420 structure = gst_structure_new ("video/x-raw",
1421 "format", G_TYPE_STRING, gst_video_format_to_string (format), NULL);
1424 case V4L2_PIX_FMT_DV:
1426 gst_structure_new ("video/x-dv", "systemstream", G_TYPE_BOOLEAN, TRUE,
1429 case V4L2_PIX_FMT_MPEG: /* MPEG */
1430 structure = gst_structure_new ("video/mpegts",
1431 "systemstream", G_TYPE_BOOLEAN, TRUE, NULL);
1433 case V4L2_PIX_FMT_WNVA: /* Winnov hw compres */
1435 case V4L2_PIX_FMT_SBGGR8:
1436 case V4L2_PIX_FMT_SGBRG8:
1437 case V4L2_PIX_FMT_SGRBG8:
1438 case V4L2_PIX_FMT_SRGGB8:
1439 structure = gst_structure_new ("video/x-bayer", "format", G_TYPE_STRING,
1440 fourcc == V4L2_PIX_FMT_SBGGR8 ? "bggr" :
1441 fourcc == V4L2_PIX_FMT_SGBRG8 ? "gbrg" :
1442 fourcc == V4L2_PIX_FMT_SGRBG8 ? "grbg" :
1443 /* fourcc == V4L2_PIX_FMT_SRGGB8 ? */ "rggb", NULL);
1445 case V4L2_PIX_FMT_SN9C10X:
1446 structure = gst_structure_new_empty ("video/x-sonix");
1448 case V4L2_PIX_FMT_PWC1:
1449 structure = gst_structure_new_empty ("video/x-pwc1");
1451 case V4L2_PIX_FMT_PWC2:
1452 structure = gst_structure_new_empty ("video/x-pwc2");
1454 case V4L2_PIX_FMT_RGB332:
1455 case V4L2_PIX_FMT_BGR666:
1456 case V4L2_PIX_FMT_ARGB555X:
1457 case V4L2_PIX_FMT_RGB565X:
1458 case V4L2_PIX_FMT_RGB444:
1459 case V4L2_PIX_FMT_YYUV: /* 16 YUV 4:2:2 */
1460 case V4L2_PIX_FMT_HI240: /* 8 8-bit color */
1461 case V4L2_PIX_FMT_Y4:
1462 case V4L2_PIX_FMT_Y6:
1463 case V4L2_PIX_FMT_Y10:
1464 case V4L2_PIX_FMT_Y12:
1465 case V4L2_PIX_FMT_Y10BPACK:
1466 case V4L2_PIX_FMT_YUV444:
1467 case V4L2_PIX_FMT_YUV555:
1468 case V4L2_PIX_FMT_YUV565:
1469 case V4L2_PIX_FMT_Y41P:
1470 case V4L2_PIX_FMT_YUV32:
1471 case V4L2_PIX_FMT_NV12MT_16X16:
1472 case V4L2_PIX_FMT_NV42:
1473 case V4L2_PIX_FMT_H264_MVC:
1475 GST_DEBUG ("Unsupported fourcc 0x%08x %" GST_FOURCC_FORMAT,
1476 fourcc, GST_FOURCC_ARGS (fourcc));
1484 gst_v4l2_object_v4l2fourcc_to_structure (guint32 fourcc)
1486 GstStructure *template;
1489 template = gst_v4l2_object_v4l2fourcc_to_bare_struct (fourcc);
1491 if (template == NULL)
1494 for (i = 0; i < GST_V4L2_FORMAT_COUNT; i++) {
1495 if (gst_v4l2_formats[i].format != fourcc)
1498 if (gst_v4l2_formats[i].dimensions) {
1499 gst_structure_set (template,
1500 "width", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
1501 "height", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
1502 "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
1513 gst_v4l2_object_get_caps_helper (GstV4L2FormatFlags flags)
1515 GstStructure *structure;
1519 caps = gst_caps_new_empty ();
1520 for (i = 0; i < GST_V4L2_FORMAT_COUNT; i++) {
1522 if ((gst_v4l2_formats[i].flags & flags) == 0)
1526 gst_v4l2_object_v4l2fourcc_to_bare_struct (gst_v4l2_formats[i].format);
1529 GstStructure *alt_s = NULL;
1531 if (gst_v4l2_formats[i].dimensions) {
1532 gst_structure_set (structure,
1533 "width", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
1534 "height", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
1535 "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
1538 switch (gst_v4l2_formats[i].format) {
1539 case V4L2_PIX_FMT_RGB32:
1540 alt_s = gst_structure_copy (structure);
1541 gst_structure_set (alt_s, "format", G_TYPE_STRING, "ARGB", NULL);
1543 case V4L2_PIX_FMT_BGR32:
1544 alt_s = gst_structure_copy (structure);
1545 gst_structure_set (alt_s, "format", G_TYPE_STRING, "BGRA", NULL);
1550 gst_caps_append_structure (caps, structure);
1553 gst_caps_append_structure (caps, alt_s);
1557 return gst_caps_simplify (caps);
1561 gst_v4l2_object_get_all_caps (void)
1563 static GstCaps *caps = NULL;
1566 caps = gst_v4l2_object_get_caps_helper (GST_V4L2_ALL);
1568 return gst_caps_ref (caps);
1572 gst_v4l2_object_get_raw_caps (void)
1574 static GstCaps *caps = NULL;
1577 caps = gst_v4l2_object_get_caps_helper (GST_V4L2_RAW);
1579 return gst_caps_ref (caps);
1583 gst_v4l2_object_get_codec_caps (void)
1585 static GstCaps *caps = NULL;
1588 caps = gst_v4l2_object_get_caps_helper (GST_V4L2_CODEC);
1590 return gst_caps_ref (caps);
1593 /* collect data for the given caps
1594 * @caps: given input caps
1595 * @format: location for the v4l format
1596 * @w/@h: location for width and height
1597 * @fps_n/@fps_d: location for framerate
1598 * @size: location for expected size of the frame or 0 if unknown
1601 gst_v4l2_object_get_caps_info (GstV4l2Object * v4l2object, GstCaps * caps,
1602 struct v4l2_fmtdesc **format, GstVideoInfo * info)
1604 GstStructure *structure;
1605 guint32 fourcc = 0, fourcc_nc = 0;
1606 const gchar *mimetype;
1607 struct v4l2_fmtdesc *fmt = NULL;
1609 structure = gst_caps_get_structure (caps, 0);
1611 mimetype = gst_structure_get_name (structure);
1613 if (!gst_video_info_from_caps (info, caps))
1614 goto invalid_format;
1616 if (g_str_equal (mimetype, "video/x-raw")) {
1617 switch (GST_VIDEO_INFO_FORMAT (info)) {
1618 case GST_VIDEO_FORMAT_I420:
1619 fourcc = V4L2_PIX_FMT_YUV420;
1620 fourcc_nc = V4L2_PIX_FMT_YUV420M;
1622 case GST_VIDEO_FORMAT_YUY2:
1623 fourcc = V4L2_PIX_FMT_YUYV;
1625 case GST_VIDEO_FORMAT_UYVY:
1626 fourcc = V4L2_PIX_FMT_UYVY;
1628 case GST_VIDEO_FORMAT_YV12:
1629 fourcc = V4L2_PIX_FMT_YVU420;
1631 case GST_VIDEO_FORMAT_Y41B:
1632 fourcc = V4L2_PIX_FMT_YUV411P;
1634 case GST_VIDEO_FORMAT_Y42B:
1635 fourcc = V4L2_PIX_FMT_YUV422P;
1637 case GST_VIDEO_FORMAT_NV12:
1638 fourcc = V4L2_PIX_FMT_NV12;
1639 fourcc_nc = V4L2_PIX_FMT_NV12M;
1641 case GST_VIDEO_FORMAT_NV12_64Z32:
1642 fourcc_nc = V4L2_PIX_FMT_NV12MT;
1644 case GST_VIDEO_FORMAT_NV21:
1645 fourcc = V4L2_PIX_FMT_NV21;
1646 fourcc_nc = V4L2_PIX_FMT_NV21M;
1648 case GST_VIDEO_FORMAT_NV16:
1649 fourcc = V4L2_PIX_FMT_NV16;
1650 fourcc_nc = V4L2_PIX_FMT_NV16M;
1652 case GST_VIDEO_FORMAT_NV61:
1653 fourcc = V4L2_PIX_FMT_NV61;
1654 fourcc_nc = V4L2_PIX_FMT_NV61M;
1656 case GST_VIDEO_FORMAT_NV24:
1657 fourcc = V4L2_PIX_FMT_NV24;
1659 case GST_VIDEO_FORMAT_YVYU:
1660 fourcc = V4L2_PIX_FMT_YVYU;
1662 case GST_VIDEO_FORMAT_RGB15:
1663 fourcc = V4L2_PIX_FMT_RGB555;
1664 fourcc_nc = V4L2_PIX_FMT_XRGB555;
1666 case GST_VIDEO_FORMAT_RGB16:
1667 fourcc = V4L2_PIX_FMT_RGB565;
1669 case GST_VIDEO_FORMAT_RGB:
1670 fourcc = V4L2_PIX_FMT_RGB24;
1672 case GST_VIDEO_FORMAT_BGR:
1673 fourcc = V4L2_PIX_FMT_BGR24;
1675 case GST_VIDEO_FORMAT_xRGB:
1676 fourcc = V4L2_PIX_FMT_RGB32;
1677 fourcc_nc = V4L2_PIX_FMT_XRGB32;
1679 case GST_VIDEO_FORMAT_ARGB:
1680 fourcc = V4L2_PIX_FMT_RGB32;
1681 fourcc_nc = V4L2_PIX_FMT_ARGB32;
1683 case GST_VIDEO_FORMAT_BGRx:
1684 fourcc = V4L2_PIX_FMT_BGR32;
1685 fourcc_nc = V4L2_PIX_FMT_XBGR32;
1687 case GST_VIDEO_FORMAT_BGRA:
1688 fourcc = V4L2_PIX_FMT_BGR32;
1689 fourcc_nc = V4L2_PIX_FMT_ABGR32;
1691 case GST_VIDEO_FORMAT_GRAY8:
1692 fourcc = V4L2_PIX_FMT_GREY;
1694 case GST_VIDEO_FORMAT_GRAY16_LE:
1695 fourcc = V4L2_PIX_FMT_Y16;
1697 case GST_VIDEO_FORMAT_GRAY16_BE:
1698 fourcc = V4L2_PIX_FMT_Y16_BE;
1704 if (g_str_equal (mimetype, "video/mpegts")) {
1705 fourcc = V4L2_PIX_FMT_MPEG;
1706 } else if (g_str_equal (mimetype, "video/x-dv")) {
1707 fourcc = V4L2_PIX_FMT_DV;
1708 } else if (g_str_equal (mimetype, "image/jpeg")) {
1709 fourcc = V4L2_PIX_FMT_JPEG;
1710 } else if (g_str_equal (mimetype, "video/mpeg")) {
1712 if (gst_structure_get_int (structure, "mpegversion", &version)) {
1715 fourcc = V4L2_PIX_FMT_MPEG1;
1718 fourcc = V4L2_PIX_FMT_MPEG2;
1721 fourcc = V4L2_PIX_FMT_MPEG4;
1722 fourcc_nc = V4L2_PIX_FMT_XVID;
1728 } else if (g_str_equal (mimetype, "video/x-h263")) {
1729 fourcc = V4L2_PIX_FMT_H263;
1730 } else if (g_str_equal (mimetype, "video/x-h264")) {
1731 const gchar *stream_format =
1732 gst_structure_get_string (structure, "stream-format");
1733 if (g_str_equal (stream_format, "avc"))
1734 fourcc = V4L2_PIX_FMT_H264_NO_SC;
1736 fourcc = V4L2_PIX_FMT_H264;
1737 } else if (g_str_equal (mimetype, "video/x-vp8")) {
1738 fourcc = V4L2_PIX_FMT_VP8;
1739 } else if (g_str_equal (mimetype, "video/x-bayer")) {
1740 const gchar *format = gst_structure_get_string (structure, "format");
1742 if (!g_ascii_strcasecmp (format, "bggr"))
1743 fourcc = V4L2_PIX_FMT_SBGGR8;
1744 else if (!g_ascii_strcasecmp (format, "gbrg"))
1745 fourcc = V4L2_PIX_FMT_SGBRG8;
1746 else if (!g_ascii_strcasecmp (format, "grbg"))
1747 fourcc = V4L2_PIX_FMT_SGRBG8;
1748 else if (!g_ascii_strcasecmp (format, "rggb"))
1749 fourcc = V4L2_PIX_FMT_SRGGB8;
1751 } else if (g_str_equal (mimetype, "video/x-sonix")) {
1752 fourcc = V4L2_PIX_FMT_SN9C10X;
1753 } else if (g_str_equal (mimetype, "video/x-pwc1")) {
1754 fourcc = V4L2_PIX_FMT_PWC1;
1755 } else if (g_str_equal (mimetype, "video/x-pwc2")) {
1756 fourcc = V4L2_PIX_FMT_PWC2;
1761 /* Prefer the non-contiguous if supported */
1762 v4l2object->prefered_non_contiguous = TRUE;
1765 fmt = gst_v4l2_object_get_format_from_fourcc (v4l2object, fourcc_nc);
1766 else if (fourcc == 0)
1767 goto unhandled_format;
1770 fmt = gst_v4l2_object_get_format_from_fourcc (v4l2object, fourcc);
1771 v4l2object->prefered_non_contiguous = FALSE;
1775 goto unsupported_format;
1784 GST_DEBUG_OBJECT (v4l2object, "invalid format");
1789 GST_DEBUG_OBJECT (v4l2object, "unhandled format");
1794 GST_DEBUG_OBJECT (v4l2object, "unsupported format");
1800 gst_v4l2_object_get_nearest_size (GstV4l2Object * v4l2object,
1801 guint32 pixelformat, gint * width, gint * height);
1804 gst_v4l2_object_add_aspect_ratio (GstV4l2Object * v4l2object, GstStructure * s)
1806 struct v4l2_cropcap cropcap;
1807 int num = 1, den = 1;
1809 if (!v4l2object->keep_aspect)
1812 if (v4l2object->par) {
1813 num = gst_value_get_fraction_numerator (v4l2object->par);
1814 den = gst_value_get_fraction_denominator (v4l2object->par);
1818 memset (&cropcap, 0, sizeof (cropcap));
1820 cropcap.type = v4l2object->type;
1821 if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_CROPCAP, &cropcap) < 0)
1822 goto cropcap_failed;
1824 num = cropcap.pixelaspect.numerator;
1825 den = cropcap.pixelaspect.denominator;
1827 /* Ignore PAR that are 0/0 */
1832 gst_structure_set (s, "pixel-aspect-ratio", GST_TYPE_FRACTION, num, den,
1837 if (errno != ENOTTY)
1838 GST_WARNING_OBJECT (v4l2object->element,
1839 "Failed to probe pixel aspect ratio with VIDIOC_CROPCAP: %s",
1840 g_strerror (errno));
1844 /* returns TRUE if the value was changed in place, otherwise FALSE */
1846 gst_v4l2src_value_simplify (GValue * val)
1848 /* simplify list of one value to one value */
1849 if (GST_VALUE_HOLDS_LIST (val) && gst_value_list_get_size (val) == 1) {
1850 const GValue *list_val;
1851 GValue new_val = G_VALUE_INIT;
1853 list_val = gst_value_list_get_value (val, 0);
1854 g_value_init (&new_val, G_VALUE_TYPE (list_val));
1855 g_value_copy (list_val, &new_val);
1856 g_value_unset (val);
1865 gst_v4l2_object_get_interlace_mode (enum v4l2_field field,
1866 GstVideoInterlaceMode * interlace_mode)
1868 /* NB: If you add new return values, please fix mode_strings in
1869 * gst_v4l2_object_add_interlace_mode */
1871 case V4L2_FIELD_ANY:
1873 ("Driver bug detected - check driver with v4l2-compliance from http://git.linuxtv.org/v4l-utils.git\n");
1875 case V4L2_FIELD_NONE:
1876 *interlace_mode = GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
1878 case V4L2_FIELD_INTERLACED:
1879 case V4L2_FIELD_INTERLACED_TB:
1880 case V4L2_FIELD_INTERLACED_BT:
1881 *interlace_mode = GST_VIDEO_INTERLACE_MODE_INTERLEAVED;
1884 GST_ERROR ("Unknown enum v4l2_field %d", field);
1890 gst_v4l2_object_get_colorspace(struct v4l2_format * fmt,
1891 GstVideoColorimetry * cinfo)
1893 gboolean is_rgb = gst_v4l2_object_v4l2fourcc_is_rgb (fmt->fmt.pix.pixelformat);
1894 enum v4l2_colorspace colorspace;
1895 enum v4l2_quantization range;
1896 enum v4l2_ycbcr_encoding matrix;
1897 enum v4l2_xfer_func transfer;
1898 gboolean ret = TRUE;
1900 if (V4L2_TYPE_IS_MULTIPLANAR (fmt->type)) {
1901 colorspace = fmt->fmt.pix_mp.colorspace;
1902 range = fmt->fmt.pix_mp.quantization;
1903 matrix = fmt->fmt.pix_mp.ycbcr_enc;
1904 transfer = fmt->fmt.pix_mp.xfer_func;
1906 colorspace = fmt->fmt.pix.colorspace;
1907 range = fmt->fmt.pix.quantization;
1908 matrix = fmt->fmt.pix.ycbcr_enc;
1909 transfer = fmt->fmt.pix.xfer_func;
1912 /* First step, set the defaults for each primaries */
1913 switch (colorspace) {
1914 case V4L2_COLORSPACE_SMPTE170M:
1915 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
1916 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
1917 cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
1918 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_SMPTE170M;
1920 case V4L2_COLORSPACE_REC709:
1921 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
1922 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT709;
1923 cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
1924 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT709;
1926 case V4L2_COLORSPACE_SRGB:
1927 case V4L2_COLORSPACE_JPEG:
1928 cinfo->range = GST_VIDEO_COLOR_RANGE_0_255;
1929 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
1930 cinfo->transfer = GST_VIDEO_TRANSFER_SRGB;
1931 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT709;
1933 case V4L2_COLORSPACE_ADOBERGB:
1934 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
1935 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
1936 cinfo->transfer = GST_VIDEO_TRANSFER_ADOBERGB;
1937 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_ADOBERGB;
1939 case V4L2_COLORSPACE_BT2020:
1940 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
1941 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT2020;
1942 cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
1943 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT2020;
1945 case V4L2_COLORSPACE_SMPTE240M:
1946 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
1947 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_SMPTE240M;
1948 cinfo->transfer = GST_VIDEO_TRANSFER_SMPTE240M;
1949 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_SMPTE240M;
1951 case V4L2_COLORSPACE_470_SYSTEM_M:
1952 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
1953 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
1954 cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
1955 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT470M;
1957 case V4L2_COLORSPACE_470_SYSTEM_BG:
1958 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
1959 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
1960 cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
1961 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT470BG;
1963 case V4L2_COLORSPACE_RAW:
1964 /* Explicitly unknown */
1965 cinfo->range = GST_VIDEO_COLOR_RANGE_UNKNOWN;
1966 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_UNKNOWN;
1967 cinfo->transfer = GST_VIDEO_TRANSFER_UNKNOWN;
1968 cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_UNKNOWN;
1971 GST_DEBUG ("Unknown enum v4l2_colorspace %d", colorspace);
1979 /* Second step, apply any custom variation */
1981 case V4L2_QUANTIZATION_FULL_RANGE:
1982 cinfo->range = GST_VIDEO_COLOR_RANGE_0_255;
1984 case V4L2_QUANTIZATION_LIM_RANGE:
1985 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
1987 case V4L2_QUANTIZATION_DEFAULT:
1988 /* replicated V4L2_MAP_QUANTIZATION_DEFAULT macro behavior */
1989 if (is_rgb && colorspace == V4L2_COLORSPACE_BT2020)
1990 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
1991 else if (is_rgb || matrix == V4L2_YCBCR_ENC_XV601
1992 || matrix == V4L2_YCBCR_ENC_XV709
1993 || colorspace == V4L2_COLORSPACE_JPEG)
1994 cinfo->range = GST_VIDEO_COLOR_RANGE_0_255;
1996 cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
1999 GST_WARNING ("Unknown enum v4l2_quantization value %d", range);
2000 cinfo->range = GST_VIDEO_COLOR_RANGE_UNKNOWN;
2005 case V4L2_YCBCR_ENC_XV601:
2006 case V4L2_YCBCR_ENC_SYCC:
2007 GST_FIXME ("XV601 and SYCC not defined, assuming 601");
2009 case V4L2_YCBCR_ENC_601:
2010 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
2012 case V4L2_YCBCR_ENC_XV709:
2013 GST_FIXME ("XV709 not defined, assuming 709");
2015 case V4L2_YCBCR_ENC_709:
2016 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT709;
2018 case V4L2_YCBCR_ENC_BT2020_CONST_LUM:
2019 GST_FIXME ("BT2020 with constant lumma is not defined, assuming BT2020");
2021 case V4L2_YCBCR_ENC_BT2020:
2022 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT2020;
2024 case V4L2_YCBCR_ENC_SMPTE240M:
2025 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_SMPTE240M;
2027 case V4L2_YCBCR_ENC_DEFAULT:
2028 /* nothing, just use defaults for colorspace */
2031 GST_WARNING ("Unknown enum v4l2_ycbcr_encoding value %d", matrix);
2032 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_UNKNOWN;
2036 /* Set identity matrix for R'G'B' formats to avoid creating
2037 * confusion. This though is cosmetic as it's now properly ignored by
2038 * the video info API and videoconvert. */
2040 cinfo->matrix = GST_VIDEO_COLOR_MATRIX_RGB;
2043 case V4L2_XFER_FUNC_709:
2044 cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
2046 case V4L2_XFER_FUNC_SRGB:
2047 cinfo->transfer = GST_VIDEO_TRANSFER_SRGB;
2049 case V4L2_XFER_FUNC_ADOBERGB:
2050 cinfo->transfer = GST_VIDEO_TRANSFER_ADOBERGB;
2052 case V4L2_XFER_FUNC_SMPTE240M:
2053 cinfo->transfer = GST_VIDEO_TRANSFER_SMPTE240M;
2055 case V4L2_XFER_FUNC_NONE:
2056 cinfo->transfer = GST_VIDEO_TRANSFER_GAMMA10;
2058 case V4L2_XFER_FUNC_DEFAULT:
2059 /* nothing, just use defaults for colorspace */
2062 GST_WARNING ("Unknown enum v4l2_xfer_func value %d", transfer);
2063 cinfo->transfer = GST_VIDEO_TRANSFER_UNKNOWN;
2072 gst_v4l2_object_try_fmt (GstV4l2Object * v4l2object,
2073 struct v4l2_format *try_fmt)
2075 int fd = v4l2object->video_fd;
2076 struct v4l2_format fmt;
2079 memcpy (&fmt, try_fmt, sizeof (fmt));
2080 r = v4l2_ioctl (fd, VIDIOC_TRY_FMT, &fmt);
2082 if (r < 0 && errno == ENOTTY) {
2083 /* The driver might not implement TRY_FMT, in which case we will try
2085 if (GST_V4L2_IS_ACTIVE (v4l2object))
2088 memcpy (&fmt, try_fmt, sizeof (fmt));
2089 r = v4l2_ioctl (fd, VIDIOC_S_FMT, &fmt);
2091 memcpy (try_fmt, &fmt, sizeof (fmt));
2095 memcpy (try_fmt, &fmt, sizeof (fmt));
2096 GST_WARNING_OBJECT (v4l2object->element,
2097 "Unable to try format: %s", g_strerror (errno));
2103 gst_v4l2_object_add_interlace_mode (GstV4l2Object * v4l2object,
2104 GstStructure * s, guint32 width, guint32 height, guint32 pixelformat)
2106 struct v4l2_format fmt;
2107 GValue interlace_formats = { 0, };
2108 GstVideoInterlaceMode interlace_mode, prev = -1;
2110 const gchar *mode_strings[] = { "progressive",
2115 if (!g_str_equal (gst_structure_get_name (s), "video/x-raw"))
2118 if (v4l2object->never_interlaced) {
2119 gst_structure_set (s, "interlace-mode", G_TYPE_STRING, "progressive", NULL);
2123 g_value_init (&interlace_formats, GST_TYPE_LIST);
2125 /* Try twice - once for NONE, once for INTERLACED. */
2126 memset (&fmt, 0, sizeof (fmt));
2127 fmt.type = v4l2object->type;
2128 fmt.fmt.pix.width = width;
2129 fmt.fmt.pix.height = height;
2130 fmt.fmt.pix.pixelformat = pixelformat;
2131 fmt.fmt.pix.field = V4L2_FIELD_NONE;
2133 if (gst_v4l2_object_try_fmt (v4l2object, &fmt) == 0 &&
2134 gst_v4l2_object_get_interlace_mode (fmt.fmt.pix.field, &interlace_mode)) {
2135 GValue interlace_enum = { 0, };
2136 g_value_init (&interlace_enum, G_TYPE_STRING);
2137 g_value_set_string (&interlace_enum, mode_strings[interlace_mode]);
2138 gst_value_list_append_and_take_value (&interlace_formats, &interlace_enum);
2139 prev = interlace_mode;
2142 memset (&fmt, 0, sizeof (fmt));
2143 fmt.type = v4l2object->type;
2144 fmt.fmt.pix.width = width;
2145 fmt.fmt.pix.height = height;
2146 fmt.fmt.pix.pixelformat = pixelformat;
2147 fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
2149 if (gst_v4l2_object_try_fmt (v4l2object, &fmt) == 0 &&
2150 gst_v4l2_object_get_interlace_mode (fmt.fmt.pix.field, &interlace_mode) &&
2151 prev != interlace_mode) {
2152 GValue interlace_enum = { 0, };
2153 g_value_init (&interlace_enum, G_TYPE_STRING);
2154 g_value_set_string (&interlace_enum, mode_strings[interlace_mode]);
2155 gst_value_list_append_and_take_value (&interlace_formats, &interlace_enum);
2158 gst_v4l2src_value_simplify (&interlace_formats);
2159 gst_structure_take_value (s, "interlace-mode", &interlace_formats);
2164 gst_v4l2_object_fill_colorimetry_list (GValue * list,
2165 GstVideoColorimetry * cinfo)
2167 GValue colorimetry = G_VALUE_INIT;
2170 gboolean found = FALSE;
2172 g_value_init (&colorimetry, G_TYPE_STRING);
2173 g_value_take_string (&colorimetry, gst_video_colorimetry_to_string (cinfo));
2175 /* only insert if no duplicate */
2176 size = gst_value_list_get_size (list);
2177 for (i = 0; i < size; i++) {
2180 tmp = gst_value_list_get_value (list, i);
2181 if (gst_value_compare (&colorimetry, tmp) == GST_VALUE_EQUAL) {
2188 gst_value_list_append_and_take_value (list, &colorimetry);
2190 g_value_unset (&colorimetry);
2194 gst_v4l2_object_add_colorspace (GstV4l2Object * v4l2object, GstStructure * s,
2195 guint32 width, guint32 height, guint32 pixelformat)
2197 struct v4l2_format fmt;
2198 GValue list = G_VALUE_INIT;
2199 GstVideoColorimetry cinfo;
2200 enum v4l2_colorspace req_cspace;
2202 memset (&fmt, 0, sizeof (fmt));
2203 fmt.type = v4l2object->type;
2204 fmt.fmt.pix.width = width;
2205 fmt.fmt.pix.height = height;
2206 fmt.fmt.pix.pixelformat = pixelformat;
2208 g_value_init (&list, GST_TYPE_LIST);
2210 /* step 1: get device default colorspace and insert it first as
2211 * it should be the preferred one */
2212 if (gst_v4l2_object_try_fmt (v4l2object, &fmt) == 0) {
2213 if (gst_v4l2_object_get_colorspace(&fmt, &cinfo))
2214 gst_v4l2_object_fill_colorimetry_list (&list, &cinfo);
2217 /* step 2: probe all colorspace other than default
2218 * We don't probe all colorspace, range, matrix and transfer combination to
2219 * avoid ioctl flooding which could greatly increase initialization time
2220 * with low-speed devices (UVC...) */
2221 for (req_cspace = V4L2_COLORSPACE_SMPTE170M;
2222 req_cspace <= V4L2_COLORSPACE_RAW; req_cspace++) {
2223 /* V4L2_COLORSPACE_BT878 is deprecated and shall not be used, so skip */
2224 if (req_cspace == V4L2_COLORSPACE_BT878)
2227 if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type))
2228 fmt.fmt.pix_mp.colorspace = req_cspace;
2230 fmt.fmt.pix.colorspace = req_cspace;
2232 if (gst_v4l2_object_try_fmt (v4l2object, &fmt) == 0) {
2233 enum v4l2_colorspace colorspace;
2235 if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type))
2236 colorspace = fmt.fmt.pix_mp.colorspace;
2238 colorspace = fmt.fmt.pix.colorspace;
2240 if (colorspace == req_cspace) {
2241 if (gst_v4l2_object_get_colorspace(&fmt, &cinfo))
2242 gst_v4l2_object_fill_colorimetry_list (&list, &cinfo);
2247 if (gst_value_list_get_size (&list) > 0)
2248 gst_structure_take_value (s, "colorimetry", &list);
2250 g_value_unset (&list);
2255 /* The frame interval enumeration code first appeared in Linux 2.6.19. */
2256 static GstStructure *
2257 gst_v4l2_object_probe_caps_for_format_and_size (GstV4l2Object * v4l2object,
2258 guint32 pixelformat,
2259 guint32 width, guint32 height, const GstStructure * template)
2261 gint fd = v4l2object->video_fd;
2262 struct v4l2_frmivalenum ival;
2265 GValue rates = { 0, };
2267 memset (&ival, 0, sizeof (struct v4l2_frmivalenum));
2269 ival.pixel_format = pixelformat;
2271 ival.height = height;
2273 GST_LOG_OBJECT (v4l2object->element,
2274 "get frame interval for %ux%u, %" GST_FOURCC_FORMAT, width, height,
2275 GST_FOURCC_ARGS (pixelformat));
2277 /* keep in mind that v4l2 gives us frame intervals (durations); we invert the
2278 * fraction to get framerate */
2279 if (v4l2_ioctl (fd, VIDIOC_ENUM_FRAMEINTERVALS, &ival) < 0)
2280 goto enum_frameintervals_failed;
2282 if (ival.type == V4L2_FRMIVAL_TYPE_DISCRETE) {
2283 GValue rate = { 0, };
2285 g_value_init (&rates, GST_TYPE_LIST);
2286 g_value_init (&rate, GST_TYPE_FRACTION);
2289 num = ival.discrete.numerator;
2290 denom = ival.discrete.denominator;
2292 if (num > G_MAXINT || denom > G_MAXINT) {
2293 /* let us hope we don't get here... */
2298 GST_LOG_OBJECT (v4l2object->element, "adding discrete framerate: %d/%d",
2301 /* swap to get the framerate */
2302 gst_value_set_fraction (&rate, denom, num);
2303 gst_value_list_append_value (&rates, &rate);
2306 } while (v4l2_ioctl (fd, VIDIOC_ENUM_FRAMEINTERVALS, &ival) >= 0);
2307 } else if (ival.type == V4L2_FRMIVAL_TYPE_STEPWISE) {
2308 GValue min = { 0, };
2309 GValue step = { 0, };
2310 GValue max = { 0, };
2311 gboolean added = FALSE;
2312 guint32 minnum, mindenom;
2313 guint32 maxnum, maxdenom;
2315 g_value_init (&rates, GST_TYPE_LIST);
2317 g_value_init (&min, GST_TYPE_FRACTION);
2318 g_value_init (&step, GST_TYPE_FRACTION);
2319 g_value_init (&max, GST_TYPE_FRACTION);
2322 minnum = ival.stepwise.min.numerator;
2323 mindenom = ival.stepwise.min.denominator;
2324 if (minnum > G_MAXINT || mindenom > G_MAXINT) {
2328 GST_LOG_OBJECT (v4l2object->element, "stepwise min frame interval: %d/%d",
2330 gst_value_set_fraction (&min, minnum, mindenom);
2333 maxnum = ival.stepwise.max.numerator;
2334 maxdenom = ival.stepwise.max.denominator;
2335 if (maxnum > G_MAXINT || maxdenom > G_MAXINT) {
2340 GST_LOG_OBJECT (v4l2object->element, "stepwise max frame interval: %d/%d",
2342 gst_value_set_fraction (&max, maxnum, maxdenom);
2345 num = ival.stepwise.step.numerator;
2346 denom = ival.stepwise.step.denominator;
2347 if (num > G_MAXINT || denom > G_MAXINT) {
2352 if (num == 0 || denom == 0) {
2353 /* in this case we have a wrong fraction or no step, set the step to max
2354 * so that we only add the min value in the loop below */
2359 /* since we only have gst_value_fraction_subtract and not add, negate the
2361 GST_LOG_OBJECT (v4l2object->element, "stepwise step frame interval: %d/%d",
2363 gst_value_set_fraction (&step, -num, denom);
2365 while (gst_value_compare (&min, &max) != GST_VALUE_GREATER_THAN) {
2366 GValue rate = { 0, };
2368 num = gst_value_get_fraction_numerator (&min);
2369 denom = gst_value_get_fraction_denominator (&min);
2370 GST_LOG_OBJECT (v4l2object->element, "adding stepwise framerate: %d/%d",
2373 /* invert to get the framerate */
2374 g_value_init (&rate, GST_TYPE_FRACTION);
2375 gst_value_set_fraction (&rate, denom, num);
2376 gst_value_list_append_value (&rates, &rate);
2379 /* we're actually adding because step was negated above. This is because
2380 * there is no _add function... */
2381 if (!gst_value_fraction_subtract (&min, &min, &step)) {
2382 GST_WARNING_OBJECT (v4l2object->element, "could not step fraction!");
2387 /* no range was added, leave the default range from the template */
2388 GST_WARNING_OBJECT (v4l2object->element,
2389 "no range added, leaving default");
2390 g_value_unset (&rates);
2392 } else if (ival.type == V4L2_FRMIVAL_TYPE_CONTINUOUS) {
2393 guint32 maxnum, maxdenom;
2395 g_value_init (&rates, GST_TYPE_FRACTION_RANGE);
2397 num = ival.stepwise.min.numerator;
2398 denom = ival.stepwise.min.denominator;
2399 if (num > G_MAXINT || denom > G_MAXINT) {
2404 maxnum = ival.stepwise.max.numerator;
2405 maxdenom = ival.stepwise.max.denominator;
2406 if (maxnum > G_MAXINT || maxdenom > G_MAXINT) {
2411 GST_LOG_OBJECT (v4l2object->element,
2412 "continuous frame interval %d/%d to %d/%d", maxdenom, maxnum, denom,
2415 gst_value_set_fraction_range_full (&rates, maxdenom, maxnum, denom, num);
2421 s = gst_structure_copy (template);
2422 gst_structure_set (s, "width", G_TYPE_INT, (gint) width,
2423 "height", G_TYPE_INT, (gint) height, NULL);
2424 gst_v4l2_object_add_aspect_ratio (v4l2object, s);
2425 gst_v4l2_object_add_interlace_mode (v4l2object, s, width, height,
2427 gst_v4l2_object_add_colorspace (v4l2object, s, width, height, pixelformat);
2429 if (G_IS_VALUE (&rates)) {
2430 gst_v4l2src_value_simplify (&rates);
2431 /* only change the framerate on the template when we have a valid probed new
2433 gst_structure_take_value (s, "framerate", &rates);
2434 } else if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
2435 v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
2436 gst_structure_set (s, "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT,
2442 enum_frameintervals_failed:
2444 GST_DEBUG_OBJECT (v4l2object->element,
2445 "Unable to enumerate intervals for %" GST_FOURCC_FORMAT "@%ux%u",
2446 GST_FOURCC_ARGS (pixelformat), width, height);
2451 /* I don't see how this is actually an error, we ignore the format then */
2452 GST_WARNING_OBJECT (v4l2object->element,
2453 "Unknown frame interval type at %" GST_FOURCC_FORMAT "@%ux%u: %u",
2454 GST_FOURCC_ARGS (pixelformat), width, height, ival.type);
2460 sort_by_frame_size (GstStructure * s1, GstStructure * s2)
2464 gst_structure_get_int (s1, "width", &w1);
2465 gst_structure_get_int (s1, "height", &h1);
2466 gst_structure_get_int (s2, "width", &w2);
2467 gst_structure_get_int (s2, "height", &h2);
2469 /* I think it's safe to assume that this won't overflow for a while */
2470 return ((w2 * h2) - (w1 * h1));
2474 gst_v4l2_object_update_and_append (GstV4l2Object * v4l2object,
2475 guint32 format, GstCaps * caps, GstStructure * s)
2477 GstStructure *alt_s = NULL;
2479 /* Encoded stream on output buffer need to be parsed */
2480 if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
2481 v4l2object->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
2484 for (; i < GST_V4L2_FORMAT_COUNT; i++) {
2485 if (format == gst_v4l2_formats[i].format &&
2486 gst_v4l2_formats[i].flags & GST_V4L2_CODEC &&
2487 !(gst_v4l2_formats[i].flags & GST_V4L2_NO_PARSE)) {
2488 gst_structure_set (s, "parsed", G_TYPE_BOOLEAN, TRUE, NULL);
2494 if (v4l2object->has_alpha_component &&
2495 (v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
2496 v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) {
2498 case V4L2_PIX_FMT_RGB32:
2499 alt_s = gst_structure_copy (s);
2500 gst_structure_set (alt_s, "format", G_TYPE_STRING, "ARGB", NULL);
2502 case V4L2_PIX_FMT_BGR32:
2503 alt_s = gst_structure_copy (s);
2504 gst_structure_set (alt_s, "format", G_TYPE_STRING, "BGRA", NULL);
2511 gst_caps_append_structure (caps, s);
2514 gst_caps_append_structure (caps, alt_s);
2518 gst_v4l2_object_probe_caps_for_format (GstV4l2Object * v4l2object,
2519 guint32 pixelformat, const GstStructure * template)
2521 GstCaps *ret = gst_caps_new_empty ();
2523 gint fd = v4l2object->video_fd;
2524 struct v4l2_frmsizeenum size;
2525 GList *results = NULL;
2528 if (pixelformat == GST_MAKE_FOURCC ('M', 'P', 'E', 'G')) {
2529 gst_caps_append_structure (ret, gst_structure_copy (template));
2533 memset (&size, 0, sizeof (struct v4l2_frmsizeenum));
2535 size.pixel_format = pixelformat;
2537 GST_DEBUG_OBJECT (v4l2object->element,
2538 "Enumerating frame sizes for %" GST_FOURCC_FORMAT,
2539 GST_FOURCC_ARGS (pixelformat));
2541 if (v4l2_ioctl (fd, VIDIOC_ENUM_FRAMESIZES, &size) < 0)
2542 goto enum_framesizes_failed;
2544 if (size.type == V4L2_FRMSIZE_TYPE_DISCRETE) {
2546 GST_LOG_OBJECT (v4l2object->element, "got discrete frame size %dx%d",
2547 size.discrete.width, size.discrete.height);
2549 w = MIN (size.discrete.width, G_MAXINT);
2550 h = MIN (size.discrete.height, G_MAXINT);
2554 gst_v4l2_object_probe_caps_for_format_and_size (v4l2object,
2555 pixelformat, w, h, template);
2558 results = g_list_prepend (results, tmp);
2562 } while (v4l2_ioctl (fd, VIDIOC_ENUM_FRAMESIZES, &size) >= 0);
2563 GST_DEBUG_OBJECT (v4l2object->element,
2564 "done iterating discrete frame sizes");
2565 } else if (size.type == V4L2_FRMSIZE_TYPE_STEPWISE) {
2566 guint32 maxw, maxh, step_w, step_h;
2568 GST_DEBUG_OBJECT (v4l2object->element, "we have stepwise frame sizes:");
2569 GST_DEBUG_OBJECT (v4l2object->element, "min width: %d",
2570 size.stepwise.min_width);
2571 GST_DEBUG_OBJECT (v4l2object->element, "min height: %d",
2572 size.stepwise.min_height);
2573 GST_DEBUG_OBJECT (v4l2object->element, "max width: %d",
2574 size.stepwise.max_width);
2575 GST_DEBUG_OBJECT (v4l2object->element, "min height: %d",
2576 size.stepwise.max_height);
2577 GST_DEBUG_OBJECT (v4l2object->element, "step width: %d",
2578 size.stepwise.step_width);
2579 GST_DEBUG_OBJECT (v4l2object->element, "step height: %d",
2580 size.stepwise.step_height);
2582 w = MAX (size.stepwise.min_width, 1);
2583 h = MAX (size.stepwise.min_height, 1);
2584 maxw = MIN (size.stepwise.max_width, G_MAXINT);
2585 maxh = MIN (size.stepwise.max_height, G_MAXINT);
2587 step_w = MAX (size.stepwise.step_width, 1);
2588 step_h = MAX (size.stepwise.step_height, 1);
2590 /* FIXME: check for sanity and that min/max are multiples of the steps */
2592 /* we only query details for the max width/height since it's likely the
2593 * most restricted if there are any resolution-dependent restrictions */
2594 tmp = gst_v4l2_object_probe_caps_for_format_and_size (v4l2object,
2595 pixelformat, maxw, maxh, template);
2598 GValue step_range = G_VALUE_INIT;
2600 g_value_init (&step_range, GST_TYPE_INT_RANGE);
2601 gst_value_set_int_range_step (&step_range, w, maxw, step_w);
2602 gst_structure_set_value (tmp, "width", &step_range);
2604 gst_value_set_int_range_step (&step_range, h, maxh, step_h);
2605 gst_structure_take_value (tmp, "height", &step_range);
2607 /* no point using the results list here, since there's only one struct */
2608 gst_v4l2_object_update_and_append (v4l2object, pixelformat, ret, tmp);
2610 } else if (size.type == V4L2_FRMSIZE_TYPE_CONTINUOUS) {
2613 GST_DEBUG_OBJECT (v4l2object->element, "we have continuous frame sizes:");
2614 GST_DEBUG_OBJECT (v4l2object->element, "min width: %d",
2615 size.stepwise.min_width);
2616 GST_DEBUG_OBJECT (v4l2object->element, "min height: %d",
2617 size.stepwise.min_height);
2618 GST_DEBUG_OBJECT (v4l2object->element, "max width: %d",
2619 size.stepwise.max_width);
2620 GST_DEBUG_OBJECT (v4l2object->element, "min height: %d",
2621 size.stepwise.max_height);
2623 w = MAX (size.stepwise.min_width, 1);
2624 h = MAX (size.stepwise.min_height, 1);
2625 maxw = MIN (size.stepwise.max_width, G_MAXINT);
2626 maxh = MIN (size.stepwise.max_height, G_MAXINT);
2629 gst_v4l2_object_probe_caps_for_format_and_size (v4l2object, pixelformat,
2632 gst_structure_set (tmp, "width", GST_TYPE_INT_RANGE, (gint) w,
2633 (gint) maxw, "height", GST_TYPE_INT_RANGE, (gint) h, (gint) maxh,
2636 /* no point using the results list here, since there's only one struct */
2637 gst_v4l2_object_update_and_append (v4l2object, pixelformat, ret, tmp);
2643 /* we use an intermediary list to store and then sort the results of the
2644 * probing because we can't make any assumptions about the order in which
2645 * the driver will give us the sizes, but we want the final caps to contain
2646 * the results starting with the highest resolution and having the lowest
2647 * resolution last, since order in caps matters for things like fixation. */
2648 results = g_list_sort (results, (GCompareFunc) sort_by_frame_size);
2649 while (results != NULL) {
2650 gst_v4l2_object_update_and_append (v4l2object, pixelformat, ret,
2652 results = g_list_delete_link (results, results);
2655 if (gst_caps_is_empty (ret))
2656 goto enum_framesizes_no_results;
2661 enum_framesizes_failed:
2663 /* I don't see how this is actually an error */
2664 GST_DEBUG_OBJECT (v4l2object->element,
2665 "Failed to enumerate frame sizes for pixelformat %" GST_FOURCC_FORMAT
2666 " (%s)", GST_FOURCC_ARGS (pixelformat), g_strerror (errno));
2667 goto default_frame_sizes;
2669 enum_framesizes_no_results:
2671 /* it's possible that VIDIOC_ENUM_FRAMESIZES is defined but the driver in
2672 * question doesn't actually support it yet */
2673 GST_DEBUG_OBJECT (v4l2object->element,
2674 "No results for pixelformat %" GST_FOURCC_FORMAT
2675 " enumerating frame sizes, trying fallback",
2676 GST_FOURCC_ARGS (pixelformat));
2677 goto default_frame_sizes;
2681 GST_WARNING_OBJECT (v4l2object->element,
2682 "Unknown frame sizeenum type for pixelformat %" GST_FOURCC_FORMAT
2683 ": %u", GST_FOURCC_ARGS (pixelformat), size.type);
2684 goto default_frame_sizes;
2687 default_frame_sizes:
2689 gint min_w, max_w, min_h, max_h, fix_num = 0, fix_denom = 0;
2691 /* This code is for Linux < 2.6.19 */
2693 max_w = max_h = GST_V4L2_MAX_SIZE;
2694 if (!gst_v4l2_object_get_nearest_size (v4l2object, pixelformat, &min_w,
2696 GST_WARNING_OBJECT (v4l2object->element,
2697 "Could not probe minimum capture size for pixelformat %"
2698 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (pixelformat));
2700 if (!gst_v4l2_object_get_nearest_size (v4l2object, pixelformat, &max_w,
2702 GST_WARNING_OBJECT (v4l2object->element,
2703 "Could not probe maximum capture size for pixelformat %"
2704 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (pixelformat));
2707 /* Since we can't get framerate directly, try to use the current norm */
2708 if (v4l2object->tv_norm && v4l2object->norms) {
2710 GstTunerNorm *norm = NULL;
2711 GstTunerNorm *current =
2712 gst_v4l2_tuner_get_norm_by_std_id (v4l2object, v4l2object->tv_norm);
2714 for (norms = v4l2object->norms; norms != NULL; norms = norms->next) {
2715 norm = (GstTunerNorm *) norms->data;
2716 if (!strcmp (norm->label, current->label))
2719 /* If it's possible, set framerate to that (discrete) value */
2721 fix_num = gst_value_get_fraction_numerator (&norm->framerate);
2722 fix_denom = gst_value_get_fraction_denominator (&norm->framerate);
2726 tmp = gst_structure_copy (template);
2728 gst_structure_set (tmp, "framerate", GST_TYPE_FRACTION, fix_num,
2730 } else if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
2731 v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
2732 /* if norm can't be used, copy the template framerate */
2733 gst_structure_set (tmp, "framerate", GST_TYPE_FRACTION_RANGE, 0, 1,
2738 gst_structure_set (tmp, "width", G_TYPE_INT, max_w, NULL);
2740 gst_structure_set (tmp, "width", GST_TYPE_INT_RANGE, min_w, max_w, NULL);
2743 gst_structure_set (tmp, "height", G_TYPE_INT, max_h, NULL);
2745 gst_structure_set (tmp, "height", GST_TYPE_INT_RANGE, min_h, max_h, NULL);
2747 /* We could consider setting interlace mode from min and max. */
2748 gst_v4l2_object_add_interlace_mode (v4l2object, tmp, max_w, max_h,
2750 gst_v4l2_object_add_aspect_ratio (v4l2object, tmp);
2751 /* We could consider to check colorspace for min too, in case it depends on
2752 * the size. But in this case, min and max could not be enough */
2753 gst_v4l2_object_add_colorspace (v4l2object, tmp, max_w, max_h, pixelformat);
2755 gst_v4l2_object_update_and_append (v4l2object, pixelformat, ret, tmp);
2761 gst_v4l2_object_get_nearest_size (GstV4l2Object * v4l2object,
2762 guint32 pixelformat, gint * width, gint * height)
2764 struct v4l2_format fmt;
2765 gboolean ret = FALSE;
2766 GstVideoInterlaceMode interlace_mode;
2768 g_return_val_if_fail (width != NULL, FALSE);
2769 g_return_val_if_fail (height != NULL, FALSE);
2771 GST_LOG_OBJECT (v4l2object->element,
2772 "getting nearest size to %dx%d with format %" GST_FOURCC_FORMAT,
2773 *width, *height, GST_FOURCC_ARGS (pixelformat));
2775 memset (&fmt, 0, sizeof (struct v4l2_format));
2777 /* get size delimiters */
2778 memset (&fmt, 0, sizeof (fmt));
2779 fmt.type = v4l2object->type;
2780 fmt.fmt.pix.width = *width;
2781 fmt.fmt.pix.height = *height;
2782 fmt.fmt.pix.pixelformat = pixelformat;
2783 fmt.fmt.pix.field = V4L2_FIELD_ANY;
2785 if (gst_v4l2_object_try_fmt (v4l2object, &fmt) < 0)
2788 GST_LOG_OBJECT (v4l2object->element,
2789 "got nearest size %dx%d", fmt.fmt.pix.width, fmt.fmt.pix.height);
2791 *width = fmt.fmt.pix.width;
2792 *height = fmt.fmt.pix.height;
2794 if (!gst_v4l2_object_get_interlace_mode (fmt.fmt.pix.field, &interlace_mode)) {
2795 GST_WARNING_OBJECT (v4l2object->element,
2796 "Unsupported field type for %" GST_FOURCC_FORMAT "@%ux%u: %u",
2797 GST_FOURCC_ARGS (pixelformat), *width, *height, fmt.fmt.pix.field);
2805 GST_WARNING_OBJECT (v4l2object->element,
2806 "Unable to try format: %s", g_strerror (errno));
2813 gst_v4l2_object_setup_pool (GstV4l2Object * v4l2object, GstCaps * caps)
2817 GST_DEBUG_OBJECT (v4l2object->element, "initializing the %s system",
2818 V4L2_TYPE_IS_OUTPUT (v4l2object->type) ? "output" : "capture");
2820 GST_V4L2_CHECK_OPEN (v4l2object);
2821 GST_V4L2_CHECK_NOT_ACTIVE (v4l2object);
2823 /* find transport */
2824 mode = v4l2object->req_mode;
2826 if (v4l2object->vcap.capabilities & V4L2_CAP_READWRITE) {
2827 if (v4l2object->req_mode == GST_V4L2_IO_AUTO)
2828 mode = GST_V4L2_IO_RW;
2829 } else if (v4l2object->req_mode == GST_V4L2_IO_RW)
2830 goto method_not_supported;
2832 if (v4l2object->vcap.capabilities & V4L2_CAP_STREAMING) {
2833 if (v4l2object->req_mode == GST_V4L2_IO_AUTO)
2834 mode = GST_V4L2_IO_MMAP;
2835 } else if (v4l2object->req_mode == GST_V4L2_IO_MMAP)
2836 goto method_not_supported;
2838 /* if still no transport selected, error out */
2839 if (mode == GST_V4L2_IO_AUTO)
2840 goto no_supported_capture_method;
2842 GST_INFO_OBJECT (v4l2object->element, "accessing buffers via mode %d", mode);
2843 v4l2object->mode = mode;
2845 /* If min_buffers is not set, the driver either does not support the control or
2846 it has not been asked yet via propose_allocation/decide_allocation. */
2847 if (!v4l2object->min_buffers)
2848 gst_v4l2_get_driver_min_buffers (v4l2object);
2850 /* Map the buffers */
2851 GST_LOG_OBJECT (v4l2object->element, "initiating buffer pool");
2853 if (!(v4l2object->pool = gst_v4l2_buffer_pool_new (v4l2object, caps)))
2854 goto buffer_pool_new_failed;
2856 GST_V4L2_SET_ACTIVE (v4l2object);
2861 buffer_pool_new_failed:
2863 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, READ,
2864 (_("Could not map buffers from device '%s'"),
2865 v4l2object->videodev),
2866 ("Failed to create buffer pool: %s", g_strerror (errno)));
2869 method_not_supported:
2871 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, READ,
2872 (_("The driver of device '%s' does not support the IO method %d"),
2873 v4l2object->videodev, mode), (NULL));
2876 no_supported_capture_method:
2878 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, READ,
2879 (_("The driver of device '%s' does not support any known IO "
2880 "method."), v4l2object->videodev), (NULL));
2886 gst_v4l2_object_set_stride (GstVideoInfo * info, GstVideoAlignment * align,
2887 gint plane, gint stride)
2889 const GstVideoFormatInfo *finfo = info->finfo;
2891 if (GST_VIDEO_FORMAT_INFO_IS_TILED (finfo)) {
2892 gint x_tiles, y_tiles, ws, hs, tile_height, padded_height;
2895 ws = GST_VIDEO_FORMAT_INFO_TILE_WS (finfo);
2896 hs = GST_VIDEO_FORMAT_INFO_TILE_HS (finfo);
2897 tile_height = 1 << hs;
2899 padded_height = GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT (finfo, plane,
2900 info->height + align->padding_top + align->padding_bottom);
2901 padded_height = GST_ROUND_UP_N (padded_height, tile_height);
2903 x_tiles = stride >> ws;
2904 y_tiles = padded_height >> hs;
2905 info->stride[plane] = GST_VIDEO_TILE_MAKE_STRIDE (x_tiles, y_tiles);
2907 info->stride[plane] = stride;
2912 gst_v4l2_object_extrapolate_info (GstV4l2Object * v4l2object,
2913 GstVideoInfo * info, GstVideoAlignment * align, gint stride)
2915 const GstVideoFormatInfo *finfo = info->finfo;
2916 gint i, estride, padded_height;
2919 g_return_if_fail (v4l2object->n_v4l2_planes == 1);
2921 padded_height = info->height + align->padding_top + align->padding_bottom;
2923 for (i = 0; i < finfo->n_planes; i++) {
2924 estride = gst_v4l2_object_extrapolate_stride (finfo, i, stride);
2926 gst_v4l2_object_set_stride (info, align, i, estride);
2928 info->offset[i] = offs;
2930 GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT (finfo, i, padded_height);
2932 GST_DEBUG_OBJECT (v4l2object->element,
2933 "Extrapolated for plane %d with base stride %d: "
2934 "stride %d, offset %" G_GSIZE_FORMAT, i, stride, info->stride[i],
2940 gst_v4l2_object_save_format (GstV4l2Object * v4l2object,
2941 struct v4l2_fmtdesc *fmtdesc, struct v4l2_format *format,
2942 GstVideoInfo * info, GstVideoAlignment * align)
2944 const GstVideoFormatInfo *finfo = info->finfo;
2945 gboolean standard_stride = TRUE;
2946 gint stride, padded_width, padded_height, i;
2948 if (GST_VIDEO_INFO_FORMAT (info) == GST_VIDEO_FORMAT_ENCODED) {
2949 v4l2object->n_v4l2_planes = 1;
2950 info->size = format->fmt.pix.sizeimage;
2954 /* adjust right padding */
2955 if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type))
2956 stride = format->fmt.pix_mp.plane_fmt[0].bytesperline;
2958 stride = format->fmt.pix.bytesperline;
2960 padded_width = stride / GST_VIDEO_FORMAT_INFO_PSTRIDE (finfo, 0);
2962 if (padded_width < format->fmt.pix.width)
2963 GST_WARNING_OBJECT (v4l2object->element,
2964 "Driver bug detected, stride is too small for the width");
2966 align->padding_right = padded_width - info->width - align->padding_left;
2968 /* adjust bottom padding */
2969 padded_height = format->fmt.pix.height;
2971 if (GST_VIDEO_FORMAT_INFO_IS_TILED (finfo)) {
2972 guint hs, tile_height;
2974 hs = GST_VIDEO_FORMAT_INFO_TILE_HS (finfo);
2975 tile_height = 1 << hs;
2977 padded_height = GST_ROUND_UP_N (padded_height, tile_height);
2980 align->padding_bottom = padded_height - info->height - align->padding_top;
2982 /* setup the strides and offset */
2983 if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type)) {
2984 struct v4l2_pix_format_mplane *pix_mp = &format->fmt.pix_mp;
2986 /* figure out the frame layout */
2987 v4l2object->n_v4l2_planes = MAX (1, pix_mp->num_planes);
2989 for (i = 0; i < v4l2object->n_v4l2_planes; i++) {
2990 stride = pix_mp->plane_fmt[i].bytesperline;
2992 if (info->stride[i] != stride)
2993 standard_stride = FALSE;
2995 gst_v4l2_object_set_stride (info, align, i, stride);
2996 info->offset[i] = info->size;
2997 info->size += pix_mp->plane_fmt[i].sizeimage;
3000 /* Extrapolate stride if planar format are being set in 1 v4l2 plane */
3001 if (v4l2object->n_v4l2_planes < finfo->n_planes) {
3002 stride = format->fmt.pix_mp.plane_fmt[0].bytesperline;
3003 gst_v4l2_object_extrapolate_info (v4l2object, info, align, stride);
3006 /* only one plane in non-MPLANE mode */
3007 v4l2object->n_v4l2_planes = 1;
3008 info->size = format->fmt.pix.sizeimage;
3009 stride = format->fmt.pix.bytesperline;
3011 if (info->stride[0] != stride)
3012 standard_stride = FALSE;
3014 gst_v4l2_object_extrapolate_info (v4l2object, info, align, stride);
3017 /* adjust the offset to take into account left and top */
3018 if (GST_VIDEO_FORMAT_INFO_IS_TILED (finfo)) {
3019 if ((align->padding_left + align->padding_top) > 0)
3020 GST_WARNING_OBJECT (v4l2object->element,
3021 "Left and top padding is not permitted for tiled formats");
3023 for (i = 0; i < finfo->n_planes; i++) {
3026 /* FIXME we assume plane as component as this is true for all supported
3027 * format we support. */
3029 hedge = GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (finfo, i, align->padding_left);
3030 vedge = GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT (finfo, i, align->padding_top);
3032 info->offset[i] += (vedge * info->stride[i]) +
3033 (hedge * GST_VIDEO_INFO_COMP_PSTRIDE (info, i));
3038 GST_DEBUG_OBJECT (v4l2object->element, "Got sizeimage %" G_GSIZE_FORMAT,
3041 /* to avoid copies we need video meta if top or left padding */
3042 v4l2object->need_video_meta =
3043 ((align->padding_top + align->padding_left) != 0);
3045 /* ... or if stride is non "standard" */
3046 if (!standard_stride)
3047 v4l2object->need_video_meta = TRUE;
3049 /* ... or also video meta if we use multiple, non-contiguous, planes */
3050 if (v4l2object->n_v4l2_planes > 1)
3051 v4l2object->need_video_meta = TRUE;
3053 v4l2object->info = *info;
3054 v4l2object->align = *align;
3055 v4l2object->format = *format;
3056 v4l2object->fmtdesc = fmtdesc;
3058 /* if we have a framerate pre-calculate duration */
3059 if (info->fps_n > 0 && info->fps_d > 0) {
3060 v4l2object->duration = gst_util_uint64_scale_int (GST_SECOND, info->fps_d,
3063 v4l2object->duration = GST_CLOCK_TIME_NONE;
3068 gst_v4l2_object_extrapolate_stride (const GstVideoFormatInfo * finfo,
3069 gint plane, gint stride)
3073 switch (finfo->format) {
3074 case GST_VIDEO_FORMAT_NV12:
3075 case GST_VIDEO_FORMAT_NV12_64Z32:
3076 case GST_VIDEO_FORMAT_NV21:
3077 case GST_VIDEO_FORMAT_NV16:
3078 case GST_VIDEO_FORMAT_NV61:
3079 case GST_VIDEO_FORMAT_NV24:
3080 estride = (plane == 0 ? 1 : 2) *
3081 GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (finfo, plane, stride);
3084 estride = GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (finfo, plane, stride);
3092 gst_v4l2_object_set_format_full (GstV4l2Object * v4l2object, GstCaps * caps,
3095 gint fd = v4l2object->video_fd;
3096 struct v4l2_format format;
3097 struct v4l2_streamparm streamparm;
3098 enum v4l2_field field;
3099 guint32 pixelformat;
3100 struct v4l2_fmtdesc *fmtdesc;
3102 GstVideoAlignment align;
3103 gint width, height, fps_n, fps_d;
3107 enum v4l2_colorspace colorspace = 0;
3108 enum v4l2_quantization range = 0;
3109 enum v4l2_ycbcr_encoding matrix = 0;
3110 enum v4l2_xfer_func transfer = 0;
3112 GST_V4L2_CHECK_OPEN (v4l2object);
3114 GST_V4L2_CHECK_NOT_ACTIVE (v4l2object);
3116 is_mplane = V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type);
3118 gst_video_info_init (&info);
3119 gst_video_alignment_reset (&align);
3121 if (!gst_v4l2_object_get_caps_info (v4l2object, caps, &fmtdesc, &info))
3124 pixelformat = fmtdesc->pixelformat;
3125 width = GST_VIDEO_INFO_WIDTH (&info);
3126 height = GST_VIDEO_INFO_HEIGHT (&info);
3127 fps_n = GST_VIDEO_INFO_FPS_N (&info);
3128 fps_d = GST_VIDEO_INFO_FPS_D (&info);
3130 /* if encoded format (GST_VIDEO_INFO_N_PLANES return 0)
3131 * or if contiguous is prefered */
3132 n_v4l_planes = GST_VIDEO_INFO_N_PLANES (&info);
3133 if (!n_v4l_planes || !v4l2object->prefered_non_contiguous)
3136 if (GST_VIDEO_INFO_IS_INTERLACED (&info)) {
3137 GST_DEBUG_OBJECT (v4l2object->element, "interlaced video");
3138 /* ideally we would differentiate between types of interlaced video
3139 * but there is not sufficient information in the caps..
3141 field = V4L2_FIELD_INTERLACED;
3143 GST_DEBUG_OBJECT (v4l2object->element, "progressive video");
3144 field = V4L2_FIELD_NONE;
3147 if (V4L2_TYPE_IS_OUTPUT (v4l2object->type)) {
3148 /* We first pick th main colorspace from the primaries */
3149 switch (info.colorimetry.primaries) {
3150 case GST_VIDEO_COLOR_PRIMARIES_BT709:
3151 /* There is two colorspaces using these primaries, use the range to
3153 if (info.colorimetry.range == GST_VIDEO_COLOR_RANGE_16_235)
3154 colorspace = V4L2_COLORSPACE_REC709;
3156 colorspace = V4L2_COLORSPACE_SRGB;
3158 case GST_VIDEO_COLOR_PRIMARIES_BT470M:
3159 colorspace = V4L2_COLORSPACE_470_SYSTEM_M;
3161 case GST_VIDEO_COLOR_PRIMARIES_BT470BG:
3162 colorspace = V4L2_COLORSPACE_470_SYSTEM_BG;
3164 case GST_VIDEO_COLOR_PRIMARIES_SMPTE170M:
3165 colorspace = V4L2_COLORSPACE_SMPTE170M;
3167 case GST_VIDEO_COLOR_PRIMARIES_SMPTE240M:
3168 colorspace = V4L2_COLORSPACE_SMPTE240M;
3171 case GST_VIDEO_COLOR_PRIMARIES_FILM:
3172 case GST_VIDEO_COLOR_PRIMARIES_UNKNOWN:
3173 /* We don't know, we will guess */
3177 GST_WARNING_OBJECT (v4l2object->element,
3178 "Unknown colorimetry primaries %d", info.colorimetry.primaries);
3182 switch (info.colorimetry.range) {
3183 case GST_VIDEO_COLOR_RANGE_0_255:
3184 range = V4L2_QUANTIZATION_FULL_RANGE;
3186 case GST_VIDEO_COLOR_RANGE_16_235:
3187 range = V4L2_QUANTIZATION_LIM_RANGE;
3189 case GST_VIDEO_COLOR_RANGE_UNKNOWN:
3190 /* We let the driver pick a default one */
3193 GST_WARNING_OBJECT (v4l2object->element,
3194 "Unknown colorimetry range %d", info.colorimetry.range);
3198 switch (info.colorimetry.matrix) {
3199 case GST_VIDEO_COLOR_MATRIX_RGB:
3200 /* Unspecified, leave to default */
3202 /* FCC is about the same as BT601 with less digit */
3203 case GST_VIDEO_COLOR_MATRIX_FCC:
3204 case GST_VIDEO_COLOR_MATRIX_BT601:
3205 matrix = V4L2_YCBCR_ENC_601;
3207 case GST_VIDEO_COLOR_MATRIX_BT709:
3208 matrix = V4L2_YCBCR_ENC_709;
3210 case GST_VIDEO_COLOR_MATRIX_SMPTE240M:
3211 matrix = V4L2_YCBCR_ENC_SMPTE240M;
3213 case GST_VIDEO_COLOR_MATRIX_BT2020:
3214 matrix = V4L2_YCBCR_ENC_BT2020;
3216 case GST_VIDEO_COLOR_MATRIX_UNKNOWN:
3217 /* We let the driver pick a default one */
3220 GST_WARNING_OBJECT (v4l2object->element,
3221 "Unknown colorimetry matrix %d", info.colorimetry.matrix);
3225 switch (info.colorimetry.transfer) {
3226 case GST_VIDEO_TRANSFER_GAMMA18:
3227 case GST_VIDEO_TRANSFER_GAMMA20:
3228 case GST_VIDEO_TRANSFER_GAMMA22:
3229 case GST_VIDEO_TRANSFER_GAMMA28:
3230 GST_WARNING_OBJECT (v4l2object->element,
3231 "GAMMA 18, 20, 22, 28 transfer functions not supported");
3233 case GST_VIDEO_TRANSFER_GAMMA10:
3234 transfer = V4L2_XFER_FUNC_NONE;
3236 case GST_VIDEO_TRANSFER_BT709:
3237 transfer = V4L2_XFER_FUNC_709;
3239 case GST_VIDEO_TRANSFER_SMPTE240M:
3240 transfer = V4L2_XFER_FUNC_SMPTE240M;
3242 case GST_VIDEO_TRANSFER_SRGB:
3243 transfer = V4L2_XFER_FUNC_SRGB;
3245 case GST_VIDEO_TRANSFER_LOG100:
3246 case GST_VIDEO_TRANSFER_LOG316:
3247 GST_WARNING_OBJECT (v4l2object->element,
3248 "LOG 100, 316 transfer functions not supported");
3249 /* FIXME No known sensible default, maybe AdobeRGB ? */
3251 case GST_VIDEO_TRANSFER_UNKNOWN:
3252 /* We let the driver pick a default one */
3255 GST_WARNING_OBJECT (v4l2object->element,
3256 "Unknown colorimetry tranfer %d", info.colorimetry.transfer);
3260 if (colorspace == 0) {
3261 /* Try to guess colorspace according to pixelformat and size */
3262 if (GST_VIDEO_INFO_IS_YUV (&info)) {
3263 /* SD streams likely use SMPTE170M and HD streams REC709 */
3264 if (width <= 720 && height <= 576)
3265 colorspace = V4L2_COLORSPACE_SMPTE170M;
3267 colorspace = V4L2_COLORSPACE_REC709;
3268 } else if (GST_VIDEO_INFO_IS_RGB (&info)) {
3269 colorspace = V4L2_COLORSPACE_SRGB;
3270 transfer = V4L2_XFER_FUNC_NONE;
3275 GST_DEBUG_OBJECT (v4l2object->element, "Desired format %dx%d, format "
3276 "%" GST_FOURCC_FORMAT " stride: %d", width, height,
3277 GST_FOURCC_ARGS (pixelformat), GST_VIDEO_INFO_PLANE_STRIDE (&info, 0));
3279 memset (&format, 0x00, sizeof (struct v4l2_format));
3280 format.type = v4l2object->type;
3283 format.type = v4l2object->type;
3284 format.fmt.pix_mp.pixelformat = pixelformat;
3285 format.fmt.pix_mp.width = width;
3286 format.fmt.pix_mp.height = height;
3287 format.fmt.pix_mp.field = field;
3288 format.fmt.pix_mp.num_planes = n_v4l_planes;
3290 /* try to ask our prefered stride but it's not a failure if not
3292 for (i = 0; i < n_v4l_planes; i++) {
3293 gint stride = GST_VIDEO_INFO_PLANE_STRIDE (&info, i);
3295 if (GST_VIDEO_FORMAT_INFO_IS_TILED (info.finfo))
3296 stride = GST_VIDEO_TILE_X_TILES (stride) <<
3297 GST_VIDEO_FORMAT_INFO_TILE_WS (info.finfo);
3299 format.fmt.pix_mp.plane_fmt[i].bytesperline = stride;
3302 if (GST_VIDEO_INFO_FORMAT (&info) == GST_VIDEO_FORMAT_ENCODED)
3303 format.fmt.pix_mp.plane_fmt[0].sizeimage = ENCODED_BUFFER_SIZE;
3305 gint stride = GST_VIDEO_INFO_PLANE_STRIDE (&info, 0);
3307 format.type = v4l2object->type;
3308 format.fmt.pix.width = width;
3309 format.fmt.pix.height = height;
3310 format.fmt.pix.pixelformat = pixelformat;
3311 format.fmt.pix.field = field;
3313 if (GST_VIDEO_FORMAT_INFO_IS_TILED (info.finfo))
3314 stride = GST_VIDEO_TILE_X_TILES (stride) <<
3315 GST_VIDEO_FORMAT_INFO_TILE_WS (info.finfo);
3317 /* try to ask our prefered stride */
3318 format.fmt.pix.bytesperline = stride;
3320 if (GST_VIDEO_INFO_FORMAT (&info) == GST_VIDEO_FORMAT_ENCODED)
3321 format.fmt.pix.sizeimage = ENCODED_BUFFER_SIZE;
3324 GST_DEBUG_OBJECT (v4l2object->element, "Desired format is %dx%d, format "
3325 "%" GST_FOURCC_FORMAT ", nb planes %d", format.fmt.pix.width,
3326 format.fmt.pix_mp.height,
3327 GST_FOURCC_ARGS (format.fmt.pix.pixelformat),
3328 is_mplane ? format.fmt.pix_mp.num_planes : 1);
3330 #ifndef GST_DISABLE_GST_DEBUG
3332 for (i = 0; i < format.fmt.pix_mp.num_planes; i++)
3333 GST_DEBUG_OBJECT (v4l2object->element, " stride %d",
3334 format.fmt.pix_mp.plane_fmt[i].bytesperline);
3336 GST_DEBUG_OBJECT (v4l2object->element, " stride %d",
3337 format.fmt.pix.bytesperline);
3341 if (V4L2_TYPE_IS_OUTPUT (v4l2object->type)) {
3343 format.fmt.pix_mp.colorspace = colorspace;
3344 format.fmt.pix_mp.quantization = range;
3345 format.fmt.pix_mp.ycbcr_enc = matrix;
3346 format.fmt.pix_mp.xfer_func = transfer;
3348 format.fmt.pix.colorspace = colorspace;
3349 format.fmt.pix.quantization = range;
3350 format.fmt.pix.ycbcr_enc = matrix;
3351 format.fmt.pix.xfer_func = transfer;
3354 GST_DEBUG_OBJECT (v4l2object->element, "Desired colorspace is %d:%d:%d:%d",
3355 colorspace, range, matrix, transfer);
3359 if (v4l2_ioctl (fd, VIDIOC_TRY_FMT, &format) < 0)
3360 goto try_fmt_failed;
3362 if (v4l2_ioctl (fd, VIDIOC_S_FMT, &format) < 0)
3363 goto set_fmt_failed;
3366 GST_DEBUG_OBJECT (v4l2object->element, "Got format of %dx%d, format "
3367 "%" GST_FOURCC_FORMAT ", nb planes %d, colorspace %d",
3368 format.fmt.pix.width, format.fmt.pix_mp.height,
3369 GST_FOURCC_ARGS (format.fmt.pix.pixelformat),
3370 is_mplane ? format.fmt.pix_mp.num_planes : 1,
3371 is_mplane ? format.fmt.pix_mp.colorspace : format.fmt.pix.colorspace);
3373 #ifndef GST_DISABLE_GST_DEBUG
3375 for (i = 0; i < format.fmt.pix_mp.num_planes; i++)
3376 GST_DEBUG_OBJECT (v4l2object->element, " stride %d, sizeimage %d",
3377 format.fmt.pix_mp.plane_fmt[i].bytesperline,
3378 format.fmt.pix_mp.plane_fmt[i].sizeimage);
3380 GST_DEBUG_OBJECT (v4l2object->element, " stride %d, sizeimage %d",
3381 format.fmt.pix.bytesperline, format.fmt.pix.sizeimage);
3385 if (format.fmt.pix.pixelformat != pixelformat)
3386 goto invalid_pixelformat;
3388 /* Only negotiate size with raw data.
3389 * For some codecs the dimensions are *not* in the bitstream, IIRC VC1
3390 * in ASF mode for example, there is also not reason for a driver to
3391 * change the size. */
3392 if (info.finfo->format != GST_VIDEO_FORMAT_ENCODED) {
3393 /* We can crop larger images */
3394 if (format.fmt.pix.width < width || format.fmt.pix.height < height)
3395 goto invalid_dimensions;
3397 /* Note, this will be adjusted if upstream has non-centered cropping. */
3398 align.padding_top = 0;
3399 align.padding_bottom = format.fmt.pix.height - height;
3400 align.padding_left = 0;
3401 align.padding_right = format.fmt.pix.width - width;
3404 if (is_mplane && format.fmt.pix_mp.num_planes != n_v4l_planes)
3405 goto invalid_planes;
3407 if (try_only) /* good enough for trying only */
3410 if (GST_VIDEO_INFO_HAS_ALPHA (&info)) {
3411 struct v4l2_control ctl = { 0, };
3412 ctl.id = V4L2_CID_ALPHA_COMPONENT;
3415 if (v4l2_ioctl (fd, VIDIOC_S_CTRL, &ctl) < 0)
3416 GST_WARNING_OBJECT (v4l2object->element,
3417 "Failed to set alpha component value");
3420 /* Is there a reason we require the caller to always specify a framerate? */
3421 GST_DEBUG_OBJECT (v4l2object->element, "Desired framerate: %u/%u", fps_n,
3424 memset (&streamparm, 0x00, sizeof (struct v4l2_streamparm));
3425 streamparm.type = v4l2object->type;
3427 if (v4l2_ioctl (fd, VIDIOC_G_PARM, &streamparm) < 0)
3428 goto get_parm_failed;
3430 GST_VIDEO_INFO_FPS_N (&info) =
3431 streamparm.parm.capture.timeperframe.denominator;
3432 GST_VIDEO_INFO_FPS_D (&info) = streamparm.parm.capture.timeperframe.numerator;
3434 if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE
3435 || v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
3436 GST_DEBUG_OBJECT (v4l2object->element, "Got framerate: %u/%u",
3437 streamparm.parm.capture.timeperframe.denominator,
3438 streamparm.parm.capture.timeperframe.numerator);
3440 /* We used to skip frame rate setup if the camera was already setup
3441 * with the requested frame rate. This breaks some cameras though,
3442 * causing them to not output data (several models of Thinkpad cameras
3443 * have this problem at least).
3444 * So, don't skip. */
3445 GST_LOG_OBJECT (v4l2object->element, "Setting framerate to %u/%u", fps_n,
3447 /* We want to change the frame rate, so check whether we can. Some cheap USB
3448 * cameras don't have the capability */
3449 if ((streamparm.parm.capture.capability & V4L2_CAP_TIMEPERFRAME) == 0) {
3450 GST_DEBUG_OBJECT (v4l2object->element,
3451 "Not setting framerate (not supported)");
3455 /* Note: V4L2 wants the frame interval, we have the frame rate */
3456 streamparm.parm.capture.timeperframe.numerator = fps_d;
3457 streamparm.parm.capture.timeperframe.denominator = fps_n;
3459 /* some cheap USB cam's won't accept any change */
3460 if (v4l2_ioctl (fd, VIDIOC_S_PARM, &streamparm) < 0)
3461 goto set_parm_failed;
3463 if (streamparm.parm.capture.timeperframe.numerator > 0 &&
3464 streamparm.parm.capture.timeperframe.denominator > 0) {
3465 /* get new values */
3466 fps_d = streamparm.parm.capture.timeperframe.numerator;
3467 fps_n = streamparm.parm.capture.timeperframe.denominator;
3469 GST_INFO_OBJECT (v4l2object->element, "Set framerate to %u/%u", fps_n,
3472 /* fix v4l2 capture driver to provide framerate values */
3473 GST_WARNING_OBJECT (v4l2object->element,
3474 "Reuse caps framerate %u/%u - fix v4l2 capture driver", fps_n, fps_d);
3477 GST_VIDEO_INFO_FPS_N (&info) = fps_n;
3478 GST_VIDEO_INFO_FPS_D (&info) = fps_d;
3482 /* add boolean return, so we can fail on drivers bugs */
3483 gst_v4l2_object_save_format (v4l2object, fmtdesc, &format, &info, &align);
3485 /* now configure the pool */
3486 if (!gst_v4l2_object_setup_pool (v4l2object, caps))
3494 GST_DEBUG_OBJECT (v4l2object->element, "can't parse caps %" GST_PTR_FORMAT,
3500 if (errno == EBUSY) {
3501 GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, BUSY,
3502 (_("Device '%s' is busy"), v4l2object->videodev),
3503 ("Call to TRY_FMT failed for %" GST_FOURCC_FORMAT " @ %dx%d: %s",
3504 GST_FOURCC_ARGS (pixelformat), width, height,
3505 g_strerror (errno)));
3511 if (errno == EBUSY) {
3512 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, BUSY,
3513 (_("Device '%s' is busy"), v4l2object->videodev),
3514 ("Call to S_FMT failed for %" GST_FOURCC_FORMAT " @ %dx%d: %s",
3515 GST_FOURCC_ARGS (pixelformat), width, height,
3516 g_strerror (errno)));
3518 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
3519 (_("Device '%s' cannot capture at %dx%d"),
3520 v4l2object->videodev, width, height),
3521 ("Call to S_FMT failed for %" GST_FOURCC_FORMAT " @ %dx%d: %s",
3522 GST_FOURCC_ARGS (pixelformat), width, height,
3523 g_strerror (errno)));
3530 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
3531 (_("Device '%s' cannot capture at %dx%d"),
3532 v4l2object->videodev, width, height),
3533 ("Tried to capture at %dx%d, but device returned size %dx%d",
3534 width, height, format.fmt.pix.width, format.fmt.pix.height));
3538 invalid_pixelformat:
3541 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
3542 (_("Device '%s' cannot capture in the specified format"),
3543 v4l2object->videodev),
3544 ("Tried to capture in %" GST_FOURCC_FORMAT
3545 ", but device returned format" " %" GST_FOURCC_FORMAT,
3546 GST_FOURCC_ARGS (pixelformat),
3547 GST_FOURCC_ARGS (format.fmt.pix.pixelformat)));
3554 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
3555 (_("Device '%s' does support non-contiguous planes"),
3556 v4l2object->videodev),
3557 ("Device wants %d planes", format.fmt.pix_mp.num_planes));
3563 /* it's possible that this call is not supported */
3564 if (errno != EINVAL && errno != ENOTTY) {
3565 GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
3566 (_("Could not get parameters on device '%s'"),
3567 v4l2object->videodev), GST_ERROR_SYSTEM);
3573 GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
3574 (_("Video device did not accept new frame rate setting.")),
3580 /* setup_pool already send the error */
3586 gst_v4l2_object_set_format (GstV4l2Object * v4l2object, GstCaps * caps)
3588 return gst_v4l2_object_set_format_full (v4l2object, caps, FALSE);
3592 gst_v4l2_object_try_format (GstV4l2Object * v4l2object, GstCaps * caps)
3594 return gst_v4l2_object_set_format_full (v4l2object, caps, TRUE);
3598 * gst_v4l2_object_acquire_format:
3599 * @v4l2object the object
3600 * @info a GstVideoInfo to be filled
3602 * Acquire the driver choosen format. This is useful in decoder or encoder elements where
3603 * the output format is choosen by the HW.
3605 * Returns: %TRUE on success, %FALSE on failure.
3608 gst_v4l2_object_acquire_format (GstV4l2Object * v4l2object, GstVideoInfo * info)
3610 struct v4l2_fmtdesc *fmtdesc;
3611 struct v4l2_format fmt;
3612 struct v4l2_crop crop;
3613 struct v4l2_selection sel;
3614 struct v4l2_rect *r = NULL;
3615 GstVideoFormat format;
3616 guint width, height;
3617 GstVideoAlignment align;
3619 gst_video_info_init (info);
3620 gst_video_alignment_reset (&align);
3622 memset (&fmt, 0x00, sizeof (struct v4l2_format));
3623 fmt.type = v4l2object->type;
3624 if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_G_FMT, &fmt) < 0)
3625 goto get_fmt_failed;
3627 fmtdesc = gst_v4l2_object_get_format_from_fourcc (v4l2object,
3628 fmt.fmt.pix.pixelformat);
3629 if (fmtdesc == NULL)
3630 goto unsupported_format;
3632 /* No need to care about mplane, the four first params are the same */
3633 format = gst_v4l2_object_v4l2fourcc_to_video_format (fmt.fmt.pix.pixelformat);
3635 /* fails if we do no translate the fmt.pix.pixelformat to GstVideoFormat */
3636 if (format == GST_VIDEO_FORMAT_UNKNOWN)
3637 goto unsupported_format;
3639 if (fmt.fmt.pix.width == 0 || fmt.fmt.pix.height == 0)
3640 goto invalid_dimensions;
3642 width = fmt.fmt.pix.width;
3643 height = fmt.fmt.pix.height;
3645 /* Use the default compose rectangle */
3646 memset (&sel, 0, sizeof (struct v4l2_selection));
3647 sel.type = v4l2object->type;
3648 sel.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
3649 if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_G_SELECTION, &sel) >= 0) {
3652 /* For ancient kernels, fall back to G_CROP */
3653 memset (&crop, 0, sizeof (struct v4l2_crop));
3654 crop.type = v4l2object->type;
3655 if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_G_CROP, &crop) >= 0)
3659 align.padding_left = r->left;
3660 align.padding_top = r->top;
3661 align.padding_right = width - r->width - r->left;
3662 align.padding_bottom = height - r->height - r->top;
3667 gst_video_info_set_format (info, format, width, height);
3669 switch (fmt.fmt.pix.field) {
3670 case V4L2_FIELD_ANY:
3671 case V4L2_FIELD_NONE:
3672 info->interlace_mode = GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
3674 case V4L2_FIELD_INTERLACED:
3675 case V4L2_FIELD_INTERLACED_TB:
3676 case V4L2_FIELD_INTERLACED_BT:
3677 info->interlace_mode = GST_VIDEO_INTERLACE_MODE_INTERLEAVED;
3680 goto unsupported_field;
3683 gst_v4l2_object_get_colorspace (&fmt, &info->colorimetry);
3685 gst_v4l2_object_save_format (v4l2object, fmtdesc, &fmt, info, &align);
3687 /* Shall we setup the pool ? */
3693 GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
3694 (_("Video device did not provide output format.")), GST_ERROR_SYSTEM);
3699 GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
3700 (_("Video device returned invalid dimensions.")),
3701 ("Expected non 0 dimensions, got %dx%d", fmt.fmt.pix.width,
3702 fmt.fmt.pix.height));
3707 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
3708 (_("Video devices uses an unsupported interlacing method.")),
3709 ("V4L2 field type %d not supported", fmt.fmt.pix.field));
3714 GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
3715 (_("Video devices uses an unsupported pixel format.")),
3716 ("V4L2 format %" GST_FOURCC_FORMAT " not supported",
3717 GST_FOURCC_ARGS (fmt.fmt.pix.pixelformat)));
3723 gst_v4l2_object_set_crop (GstV4l2Object * obj)
3725 struct v4l2_crop crop = { 0 };
3727 crop.type = obj->type;
3728 crop.c.left = obj->align.padding_left;
3729 crop.c.top = obj->align.padding_top;
3730 crop.c.width = obj->info.width;
3731 crop.c.height = obj->info.height;
3733 if (obj->align.padding_left + obj->align.padding_top +
3734 obj->align.padding_right + obj->align.padding_bottom == 0) {
3735 GST_DEBUG_OBJECT (obj->element, "no cropping needed");
3739 GST_DEBUG_OBJECT (obj->element,
3740 "Desired cropping left %u, top %u, size %ux%u", crop.c.left, crop.c.top,
3741 crop.c.width, crop.c.height);
3743 if (v4l2_ioctl (obj->video_fd, VIDIOC_S_CROP, &crop) < 0) {
3744 GST_WARNING_OBJECT (obj->element, "VIDIOC_S_CROP failed");
3748 if (v4l2_ioctl (obj->video_fd, VIDIOC_G_CROP, &crop) < 0) {
3749 GST_WARNING_OBJECT (obj->element, "VIDIOC_G_CROP failed");
3753 GST_DEBUG_OBJECT (obj->element,
3754 "Got cropping left %u, top %u, size %ux%u", crop.c.left, crop.c.top,
3755 crop.c.width, crop.c.height);
3761 gst_v4l2_object_caps_equal (GstV4l2Object * v4l2object, GstCaps * caps)
3763 GstStructure *config;
3767 if (!v4l2object->pool)
3770 config = gst_buffer_pool_get_config (v4l2object->pool);
3771 gst_buffer_pool_config_get_params (config, &oldcaps, NULL, NULL, NULL);
3773 ret = oldcaps && gst_caps_is_equal (caps, oldcaps);
3775 gst_structure_free (config);
3781 gst_v4l2_object_unlock (GstV4l2Object * v4l2object)
3783 gboolean ret = TRUE;
3785 GST_LOG_OBJECT (v4l2object->element, "start flushing");
3787 if (v4l2object->pool && gst_buffer_pool_is_active (v4l2object->pool))
3788 gst_buffer_pool_set_flushing (v4l2object->pool, TRUE);
3794 gst_v4l2_object_unlock_stop (GstV4l2Object * v4l2object)
3796 gboolean ret = TRUE;
3798 GST_LOG_OBJECT (v4l2object->element, "stop flushing");
3800 if (v4l2object->pool && gst_buffer_pool_is_active (v4l2object->pool))
3801 gst_buffer_pool_set_flushing (v4l2object->pool, FALSE);
3807 gst_v4l2_object_stop (GstV4l2Object * v4l2object)
3809 GST_DEBUG_OBJECT (v4l2object->element, "stopping");
3811 if (!GST_V4L2_IS_OPEN (v4l2object))
3813 if (!GST_V4L2_IS_ACTIVE (v4l2object))
3816 if (v4l2object->pool) {
3817 GST_DEBUG_OBJECT (v4l2object->element, "deactivating pool");
3818 gst_buffer_pool_set_active (v4l2object->pool, FALSE);
3819 gst_object_unref (v4l2object->pool);
3820 v4l2object->pool = NULL;
3823 GST_V4L2_SET_INACTIVE (v4l2object);
3830 gst_v4l2_object_probe_caps (GstV4l2Object * v4l2object, GstCaps * filter)
3836 formats = gst_v4l2_object_get_format_list (v4l2object);
3838 ret = gst_caps_new_empty ();
3840 for (walk = formats; walk; walk = walk->next) {
3841 struct v4l2_fmtdesc *format;
3842 GstStructure *template;
3844 format = (struct v4l2_fmtdesc *) walk->data;
3846 template = gst_v4l2_object_v4l2fourcc_to_bare_struct (format->pixelformat);
3851 tmp = gst_v4l2_object_probe_caps_for_format (v4l2object,
3852 format->pixelformat, template);
3854 gst_caps_append (ret, tmp);
3856 gst_structure_free (template);
3858 GST_DEBUG_OBJECT (v4l2object->element, "unknown format %u",
3859 format->pixelformat);
3867 ret = gst_caps_intersect_full (filter, ret, GST_CAPS_INTERSECT_FIRST);
3868 gst_caps_unref (tmp);
3875 gst_v4l2_object_get_caps (GstV4l2Object * v4l2object, GstCaps * filter)
3879 if (v4l2object->probed_caps == NULL)
3880 v4l2object->probed_caps = gst_v4l2_object_probe_caps (v4l2object, NULL);
3883 ret = gst_caps_intersect_full (filter, v4l2object->probed_caps,
3884 GST_CAPS_INTERSECT_FIRST);
3886 ret = gst_caps_ref (v4l2object->probed_caps);
3889 GST_INFO_OBJECT (v4l2object->element, "probed caps: %" GST_PTR_FORMAT, ret);
3890 LOG_CAPS (v4l2object->element, ret);
3896 gst_v4l2_object_decide_allocation (GstV4l2Object * obj, GstQuery * query)
3899 GstBufferPool *pool = NULL, *other_pool = NULL;
3900 GstStructure *config;
3901 guint size, min, max, own_min = 0;
3903 gboolean has_video_meta;
3904 gboolean can_share_own_pool, pushing_from_our_pool = FALSE;
3905 GstAllocator *allocator = NULL;
3906 GstAllocationParams params = { 0 };
3908 GST_DEBUG_OBJECT (obj->element, "decide allocation");
3910 g_return_val_if_fail (obj->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
3911 obj->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE, FALSE);
3913 gst_query_parse_allocation (query, &caps, NULL);
3915 if (obj->pool == NULL) {
3916 if (!gst_v4l2_object_setup_pool (obj, caps))
3920 if (gst_query_get_n_allocation_params (query) > 0)
3921 gst_query_parse_nth_allocation_param (query, 0, &allocator, ¶ms);
3923 if (gst_query_get_n_allocation_pools (query) > 0) {
3924 gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
3933 GST_DEBUG_OBJECT (obj->element, "allocation: size:%u min:%u max:%u pool:%"
3934 GST_PTR_FORMAT, size, min, max, pool);
3937 gst_query_find_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
3939 can_share_own_pool = (has_video_meta || !obj->need_video_meta);
3941 gst_v4l2_get_driver_min_buffers (obj);
3942 /* We can't share our own pool, if it exceed V4L2 capacity */
3943 if (min + obj->min_buffers + 1 > VIDEO_MAX_FRAME)
3944 can_share_own_pool = FALSE;
3947 switch (obj->mode) {
3948 case GST_V4L2_IO_RW:
3950 /* in READ/WRITE mode, prefer a downstream pool because our own pool
3951 * doesn't help much, we have to write to it as well */
3952 GST_DEBUG_OBJECT (obj->element,
3953 "read/write mode: using downstream pool");
3954 /* use the bigest size, when we use our own pool we can't really do any
3955 * other size than what the hardware gives us but for downstream pools
3957 size = MAX (size, obj->info.size);
3958 } else if (can_share_own_pool) {
3959 /* no downstream pool, use our own then */
3960 GST_DEBUG_OBJECT (obj->element,
3961 "read/write mode: no downstream pool, using our own");
3962 pool = gst_object_ref (obj->pool);
3963 size = obj->info.size;
3964 pushing_from_our_pool = TRUE;
3968 case GST_V4L2_IO_USERPTR:
3969 case GST_V4L2_IO_DMABUF_IMPORT:
3970 /* in importing mode, prefer our own pool, and pass the other pool to
3971 * our own, so it can serve itself */
3973 goto no_downstream_pool;
3974 gst_v4l2_buffer_pool_set_other_pool (GST_V4L2_BUFFER_POOL (obj->pool),
3977 gst_object_unref (pool);
3978 pool = gst_object_ref (obj->pool);
3979 size = obj->info.size;
3982 case GST_V4L2_IO_MMAP:
3983 case GST_V4L2_IO_DMABUF:
3984 /* in streaming mode, prefer our own pool */
3985 /* Check if we can use it ... */
3986 if (can_share_own_pool) {
3988 gst_object_unref (pool);
3989 pool = gst_object_ref (obj->pool);
3990 size = obj->info.size;
3991 GST_DEBUG_OBJECT (obj->element,
3992 "streaming mode: using our own pool %" GST_PTR_FORMAT, pool);
3993 pushing_from_our_pool = TRUE;
3995 GST_DEBUG_OBJECT (obj->element,
3996 "streaming mode: copying to downstream pool %" GST_PTR_FORMAT,
3999 GST_DEBUG_OBJECT (obj->element,
4000 "streaming mode: no usable pool, copying to generic pool");
4001 size = MAX (size, obj->info.size);
4004 case GST_V4L2_IO_AUTO:
4006 GST_WARNING_OBJECT (obj->element, "unhandled mode");
4013 /* If pushing from our own pool, configure it with queried minimum,
4014 * otherwise use the minimum required */
4015 if (pushing_from_our_pool) {
4016 /* When pushing from our own pool, we need what downstream one, to be able
4017 * to fill the pipeline, the minimum required to decoder according to the
4018 * driver and 1 more, so we don't endup up with everything downstream or
4019 * held by the decoder. */
4020 own_min = min + obj->min_buffers + 1;
4022 /* If no allocation parameters where provided, allow for a little more
4023 * buffers and enable copy threshold */
4026 gst_v4l2_buffer_pool_copy_at_threshold (GST_V4L2_BUFFER_POOL (pool),
4029 gst_v4l2_buffer_pool_copy_at_threshold (GST_V4L2_BUFFER_POOL (pool),
4034 /* In this case we'll have to configure two buffer pool. For our buffer
4035 * pool, we'll need what the driver one, and one more, so we can dequeu */
4036 own_min = obj->min_buffers + 1;
4037 own_min = MAX (own_min, GST_V4L2_MIN_BUFFERS);
4039 /* for the downstream pool, we keep what downstream wants, though ensure
4040 * at least a minimum if downstream didn't suggest anything (we are
4041 * expecting the base class to create a default one for the context) */
4042 min = MAX (min, GST_V4L2_MIN_BUFFERS);
4044 /* To import we need the other pool to hold at least own_min */
4045 if (obj->pool == pool)
4049 /* Request a bigger max, if one was suggested but it's too small */
4051 max = MAX (min, max);
4053 /* First step, configure our own pool */
4054 config = gst_buffer_pool_get_config (obj->pool);
4056 if (obj->need_video_meta || has_video_meta) {
4057 GST_DEBUG_OBJECT (obj->element, "activate Video Meta");
4058 gst_buffer_pool_config_add_option (config,
4059 GST_BUFFER_POOL_OPTION_VIDEO_META);
4062 gst_buffer_pool_config_set_allocator (config, allocator, ¶ms);
4063 gst_buffer_pool_config_set_params (config, caps, size, own_min, 0);
4065 GST_DEBUG_OBJECT (obj->element, "setting own pool config to %"
4066 GST_PTR_FORMAT, config);
4068 /* Our pool often need to adjust the value */
4069 if (!gst_buffer_pool_set_config (obj->pool, config)) {
4070 config = gst_buffer_pool_get_config (obj->pool);
4072 GST_DEBUG_OBJECT (obj->element, "own pool config changed to %"
4073 GST_PTR_FORMAT, config);
4075 /* our pool will adjust the maximum buffer, which we are fine with */
4076 if (!gst_buffer_pool_set_config (obj->pool, config))
4080 /* Now configure the other pool if different */
4081 if (obj->pool != pool)
4085 config = gst_buffer_pool_get_config (other_pool);
4086 gst_buffer_pool_config_set_allocator (config, allocator, ¶ms);
4087 gst_buffer_pool_config_set_params (config, caps, size, min, max);
4089 GST_DEBUG_OBJECT (obj->element, "setting other pool config to %"
4090 GST_PTR_FORMAT, config);
4092 /* if downstream supports video metadata, add this to the pool config */
4093 if (has_video_meta) {
4094 GST_DEBUG_OBJECT (obj->element, "activate Video Meta");
4095 gst_buffer_pool_config_add_option (config,
4096 GST_BUFFER_POOL_OPTION_VIDEO_META);
4099 if (!gst_buffer_pool_set_config (other_pool, config)) {
4100 config = gst_buffer_pool_get_config (other_pool);
4102 if (!gst_buffer_pool_config_validate_params (config, caps, size, min,
4104 gst_structure_free (config);
4108 if (!gst_buffer_pool_set_config (other_pool, config))
4114 /* For simplicity, simply read back the active configuration, so our base
4115 * class get the right information */
4116 config = gst_buffer_pool_get_config (pool);
4117 gst_buffer_pool_config_get_params (config, NULL, &size, &min, &max);
4118 gst_structure_free (config);
4122 gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
4124 gst_query_add_allocation_pool (query, pool, size, min, max);
4127 gst_object_unref (allocator);
4130 gst_object_unref (pool);
4136 /* setup_pool already send the error */
4141 GST_ELEMENT_ERROR (obj->element, RESOURCE, SETTINGS,
4142 (_("Failed to configure internal buffer pool.")), (NULL));
4147 GST_ELEMENT_ERROR (obj->element, RESOURCE, SETTINGS,
4148 (_("Video device did not suggest any buffer size.")), (NULL));
4154 gst_object_unref (allocator);
4157 gst_object_unref (pool);
4162 GST_ELEMENT_ERROR (obj->element, RESOURCE, SETTINGS,
4163 (_("No downstream pool to import from.")),
4164 ("When importing DMABUF or USERPTR, we need a pool to import from"));
4170 gst_v4l2_object_propose_allocation (GstV4l2Object * obj, GstQuery * query)
4172 GstBufferPool *pool;
4173 /* we need at least 2 buffers to operate */
4174 guint size, min, max;
4178 /* Set defaults allocation parameters */
4179 size = obj->info.size;
4180 min = GST_V4L2_MIN_BUFFERS;
4181 max = VIDEO_MAX_FRAME;
4183 gst_query_parse_allocation (query, &caps, &need_pool);
4188 if ((pool = obj->pool))
4189 gst_object_ref (pool);
4193 GstStructure *config;
4195 /* we had a pool, check caps */
4196 config = gst_buffer_pool_get_config (pool);
4197 gst_buffer_pool_config_get_params (config, &pcaps, NULL, NULL, NULL);
4199 GST_DEBUG_OBJECT (obj->element,
4200 "we had a pool with caps %" GST_PTR_FORMAT, pcaps);
4201 if (!gst_caps_is_equal (caps, pcaps)) {
4202 gst_structure_free (config);
4203 gst_object_unref (pool);
4204 goto different_caps;
4206 gst_structure_free (config);
4208 gst_v4l2_get_driver_min_buffers (obj);
4210 min = MAX (obj->min_buffers, GST_V4L2_MIN_BUFFERS);
4212 gst_query_add_allocation_pool (query, pool, size, min, max);
4214 /* we also support various metadata */
4215 gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
4218 gst_object_unref (pool);
4225 GST_DEBUG_OBJECT (obj->element, "no caps specified");
4230 /* different caps, we can't use this pool */
4231 GST_DEBUG_OBJECT (obj->element, "pool has different caps");