gstv4l2object.c 101 KB
Newer Older
1 2
/* GStreamer
 *
3
 * Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
4 5 6
 *               2006 Edgard Lima <edgard.lima@indt.org.br>
 *
 * gstv4l2object.c: base class for V4L2 elements
7 8 9 10 11 12 13 14 15 16
 *
 * This library is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Library General Public License as published
 * by the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version. This library is distributed in the hope
 * that it will be useful, but WITHOUT ANY WARRANTY; without even the
 * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE.  See the GNU Library General Public License for more details.
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the Free Software
Tim-Philipp Müller's avatar
Tim-Philipp Müller committed
17
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301,
Rob Clark's avatar
Rob Clark committed
18
 * USA.
19 20
 */

21 22 23 24
/* FIXME 0.11: suppress warnings for deprecated API such as GValueArray
 * with newer GLib versions (>= 2.31.0) */
#define GLIB_DISABLE_DEPRECATION_WARNINGS

25 26 27 28 29 30 31 32 33 34
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>

35 36 37 38
#ifdef HAVE_GUDEV
#include <gudev/gudev.h>
#endif

39 40 41 42
#include "v4l2_calls.h"
#include "gstv4l2tuner.h"
#include "gstv4l2colorbalance.h"

Rob Clark's avatar
Rob Clark committed
43 44
#include "gst/gst-i18n-plugin.h"

45 46
#include <gst/video/video.h>

Rob Clark's avatar
Rob Clark committed
47 48 49
GST_DEBUG_CATEGORY_EXTERN (v4l2_debug);
#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
Rob Clark's avatar
Rob Clark committed
53
#define DEFAULT_PROP_TV_NORM            0
54
#define DEFAULT_PROP_CHANNEL            NULL
55
#define DEFAULT_PROP_FREQUENCY          0
Wim Taymans's avatar
Wim Taymans committed
56
#define DEFAULT_PROP_IO_MODE            GST_V4L2_IO_AUTO
57

58 59
#define ENCODED_BUFFER_SIZE             (1 * 1024 * 1024)

Stefan Kost's avatar
Stefan Kost committed
60 61 62 63 64 65
enum
{
  PROP_0,
  V4L2_STD_OBJECT_PROPS,
};

66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144
/*
 * common format / caps utilities:
 */
typedef enum
{
  GST_V4L2_RAW = 1 << 0,
  GST_V4L2_CODEC = 1 << 1,
  GST_V4L2_TRANSPORT = 1 << 2,
  GST_V4L2_NO_PARSE = 1 << 3,
  GST_V4L2_ALL = 0xffff
} GstV4L2FormatFlags;

typedef struct
{
  guint32 format;
  gboolean dimensions;
  GstV4L2FormatFlags flags;
} GstV4L2FormatDesc;

static const GstV4L2FormatDesc gst_v4l2_formats[] = {
  /* from Linux 2.6.15 videodev2.h */
  {V4L2_PIX_FMT_RGB332, TRUE, GST_V4L2_RAW},
  {V4L2_PIX_FMT_RGB555, TRUE, GST_V4L2_RAW},
  {V4L2_PIX_FMT_RGB565, TRUE, GST_V4L2_RAW},
  {V4L2_PIX_FMT_RGB555X, TRUE, GST_V4L2_RAW},
  {V4L2_PIX_FMT_RGB565X, TRUE, GST_V4L2_RAW},
  {V4L2_PIX_FMT_BGR24, TRUE, GST_V4L2_RAW},
  {V4L2_PIX_FMT_RGB24, TRUE, GST_V4L2_RAW},
  {V4L2_PIX_FMT_BGR32, TRUE, GST_V4L2_RAW},
  {V4L2_PIX_FMT_RGB32, TRUE, GST_V4L2_RAW},
  {V4L2_PIX_FMT_GREY, TRUE, GST_V4L2_RAW},
  {V4L2_PIX_FMT_YVU410, TRUE, GST_V4L2_RAW},
  {V4L2_PIX_FMT_YVU420, TRUE, GST_V4L2_RAW},
  {V4L2_PIX_FMT_YUYV, TRUE, GST_V4L2_RAW},
  {V4L2_PIX_FMT_UYVY, TRUE, GST_V4L2_RAW},
  {V4L2_PIX_FMT_YUV422P, TRUE, GST_V4L2_RAW},
  {V4L2_PIX_FMT_YUV411P, TRUE, GST_V4L2_RAW},
  {V4L2_PIX_FMT_Y41P, TRUE, GST_V4L2_RAW},

  /* two planes -- one Y, one Cr + Cb interleaved  */
  {V4L2_PIX_FMT_NV12, TRUE, GST_V4L2_RAW},
  {V4L2_PIX_FMT_NV12M, TRUE, GST_V4L2_RAW},
  {V4L2_PIX_FMT_NV12MT, TRUE, GST_V4L2_RAW},
  {V4L2_PIX_FMT_NV21, TRUE, GST_V4L2_RAW},
  {V4L2_PIX_FMT_NV21M, TRUE, GST_V4L2_RAW},

  /*  The following formats are not defined in the V4L2 specification */
  {V4L2_PIX_FMT_YUV410, TRUE, GST_V4L2_RAW},
  {V4L2_PIX_FMT_YUV420, TRUE, GST_V4L2_RAW},
  {V4L2_PIX_FMT_YYUV, TRUE, GST_V4L2_RAW},
  {V4L2_PIX_FMT_HI240, TRUE, GST_V4L2_RAW},

  /* see http://www.siliconimaging.com/RGB%20Bayer.htm */
  {V4L2_PIX_FMT_SBGGR8, TRUE, GST_V4L2_CODEC},

  /* compressed formats */
  {V4L2_PIX_FMT_MJPEG, FALSE, GST_V4L2_CODEC},
  {V4L2_PIX_FMT_JPEG, FALSE, GST_V4L2_CODEC},
  {V4L2_PIX_FMT_PJPG, FALSE, GST_V4L2_CODEC},
  {V4L2_PIX_FMT_DV, FALSE, GST_V4L2_TRANSPORT},
  {V4L2_PIX_FMT_MPEG, FALSE, GST_V4L2_TRANSPORT},
  {V4L2_PIX_FMT_MPEG1, FALSE, GST_V4L2_CODEC},
  {V4L2_PIX_FMT_MPEG2, FALSE, GST_V4L2_CODEC},
  {V4L2_PIX_FMT_MPEG4, FALSE, GST_V4L2_CODEC},
  {V4L2_PIX_FMT_H263, FALSE, GST_V4L2_CODEC},
  {V4L2_PIX_FMT_H264, FALSE, GST_V4L2_CODEC},
  /* VP8 not parseable */
  {V4L2_PIX_FMT_VP8, FALSE, GST_V4L2_CODEC | GST_V4L2_NO_PARSE},

  /*  Vendor-specific formats   */
  {V4L2_PIX_FMT_WNVA, TRUE, GST_V4L2_CODEC},
  {V4L2_PIX_FMT_SN9C10X, TRUE, GST_V4L2_CODEC},
  {V4L2_PIX_FMT_PWC1, TRUE, GST_V4L2_CODEC},
  {V4L2_PIX_FMT_PWC2, TRUE, GST_V4L2_CODEC},
  {V4L2_PIX_FMT_YVYU, TRUE, GST_V4L2_RAW},
};

#define GST_V4L2_FORMAT_COUNT (G_N_ELEMENTS (gst_v4l2_formats))

145 146
static GSList *gst_v4l2_object_get_format_list (GstV4l2Object * v4l2object);

147 148

#define GST_TYPE_V4L2_DEVICE_FLAGS (gst_v4l2_device_get_type ())
149
static GType
150 151 152 153 154 155
gst_v4l2_device_get_type (void)
{
  static GType v4l2_device_type = 0;

  if (v4l2_device_type == 0) {
    static const GFlagsValue values[] = {
156 157 158 159 160 161 162 163 164
      {V4L2_CAP_VIDEO_CAPTURE, "Device supports video capture", "capture"},
      {V4L2_CAP_VIDEO_OUTPUT, "Device supports video playback", "output"},
      {V4L2_CAP_VIDEO_OVERLAY, "Device supports video overlay", "overlay"},

      {V4L2_CAP_VBI_CAPTURE, "Device supports the VBI capture", "vbi-capture"},
      {V4L2_CAP_VBI_OUTPUT, "Device supports the VBI output", "vbi-output"},

      {V4L2_CAP_TUNER, "Device has a tuner or modulator", "tuner"},
      {V4L2_CAP_AUDIO, "Device has audio inputs or outputs", "audio"},
165 166 167 168 169 170 171 172 173 174 175

      {0, NULL, NULL}
    };

    v4l2_device_type =
        g_flags_register_static ("GstV4l2DeviceTypeFlags", values);
  }

  return v4l2_device_type;
}

Rob Clark's avatar
Rob Clark committed
176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227
#define GST_TYPE_V4L2_TV_NORM (gst_v4l2_tv_norm_get_type ())
static GType
gst_v4l2_tv_norm_get_type (void)
{
  static GType v4l2_tv_norm = 0;

  if (!v4l2_tv_norm) {
    static const GEnumValue tv_norms[] = {
      {0, "none", "none"},

      {V4L2_STD_NTSC, "NTSC", "NTSC"},
      {V4L2_STD_NTSC_M, "NTSC-M", "NTSC-M"},
      {V4L2_STD_NTSC_M_JP, "NTSC-M-JP", "NTSC-M-JP"},
      {V4L2_STD_NTSC_M_KR, "NTSC-M-KR", "NTSC-M-KR"},
      {V4L2_STD_NTSC_443, "NTSC-443", "NTSC-443"},

      {V4L2_STD_PAL, "PAL", "PAL"},
      {V4L2_STD_PAL_BG, "PAL-BG", "PAL-BG"},
      {V4L2_STD_PAL_B, "PAL-B", "PAL-B"},
      {V4L2_STD_PAL_B1, "PAL-B1", "PAL-B1"},
      {V4L2_STD_PAL_G, "PAL-G", "PAL-G"},
      {V4L2_STD_PAL_H, "PAL-H", "PAL-H"},
      {V4L2_STD_PAL_I, "PAL-I", "PAL-I"},
      {V4L2_STD_PAL_DK, "PAL-DK", "PAL-DK"},
      {V4L2_STD_PAL_D, "PAL-D", "PAL-D"},
      {V4L2_STD_PAL_D1, "PAL-D1", "PAL-D1"},
      {V4L2_STD_PAL_K, "PAL-K", "PAL-K"},
      {V4L2_STD_PAL_M, "PAL-M", "PAL-M"},
      {V4L2_STD_PAL_N, "PAL-N", "PAL-N"},
      {V4L2_STD_PAL_Nc, "PAL-Nc", "PAL-Nc"},
      {V4L2_STD_PAL_60, "PAL-60", "PAL-60"},

      {V4L2_STD_SECAM, "SECAM", "SECAM"},
      {V4L2_STD_SECAM_B, "SECAM-B", "SECAM-B"},
      {V4L2_STD_SECAM_G, "SECAM-G", "SECAM-G"},
      {V4L2_STD_SECAM_H, "SECAM-H", "SECAM-H"},
      {V4L2_STD_SECAM_DK, "SECAM-DK", "SECAM-DK"},
      {V4L2_STD_SECAM_D, "SECAM-D", "SECAM-D"},
      {V4L2_STD_SECAM_K, "SECAM-K", "SECAM-K"},
      {V4L2_STD_SECAM_K1, "SECAM-K1", "SECAM-K1"},
      {V4L2_STD_SECAM_L, "SECAM-L", "SECAM-L"},
      {V4L2_STD_SECAM_LC, "SECAM-Lc", "SECAM-Lc"},

      {0, NULL, NULL}
    };

    v4l2_tv_norm = g_enum_register_static ("V4L2_TV_norms", tv_norms);
  }

  return v4l2_tv_norm;
}

228
GType
Wim Taymans's avatar
Wim Taymans committed
229 230 231 232 233 234 235 236 237 238
gst_v4l2_io_mode_get_type (void)
{
  static GType v4l2_io_mode = 0;

  if (!v4l2_io_mode) {
    static const GEnumValue io_modes[] = {
      {GST_V4L2_IO_AUTO, "GST_V4L2_IO_AUTO", "auto"},
      {GST_V4L2_IO_RW, "GST_V4L2_IO_RW", "rw"},
      {GST_V4L2_IO_MMAP, "GST_V4L2_IO_MMAP", "mmap"},
      {GST_V4L2_IO_USERPTR, "GST_V4L2_IO_USERPTR", "userptr"},
239
      {GST_V4L2_IO_DMABUF, "GST_V4L2_IO_DMABUF", "dmabuf"},
240 241
      {GST_V4L2_IO_DMABUF_IMPORT, "GST_V4L2_IO_DMABUF_IMPORT",
          "dmabuf-import"},
Wim Taymans's avatar
Wim Taymans committed
242 243 244 245 246 247 248 249

      {0, NULL, NULL}
    };
    v4l2_io_mode = g_enum_register_static ("GstV4l2IOMode", io_modes);
  }
  return v4l2_io_mode;
}

250
void
Rob Clark's avatar
Rob Clark committed
251 252
gst_v4l2_object_install_properties_helper (GObjectClass * gobject_class,
    const char *default_device)
253
{
254 255
  g_object_class_install_property (gobject_class, PROP_DEVICE,
      g_param_spec_string ("device", "Device", "Device location",
256
          default_device, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
257 258
  g_object_class_install_property (gobject_class, PROP_DEVICE_NAME,
      g_param_spec_string ("device-name", "Device name",
259 260
          "Name of the device", DEFAULT_PROP_DEVICE_NAME,
          G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
261 262 263
  g_object_class_install_property (gobject_class, PROP_DEVICE_FD,
      g_param_spec_int ("device-fd", "File descriptor",
          "File descriptor of the device", -1, G_MAXINT, DEFAULT_PROP_DEVICE_FD,
264
          G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
265 266
  g_object_class_install_property (gobject_class, PROP_FLAGS,
      g_param_spec_flags ("flags", "Flags", "Device type flags",
267 268
          GST_TYPE_V4L2_DEVICE_FLAGS, DEFAULT_PROP_FLAGS,
          G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
269

270
  /**
271
   * GstV4l2Src:brightness:
272 273 274
   *
   * Picture brightness, or more precisely, the black level
   */
275 276 277 278 279
  g_object_class_install_property (gobject_class, PROP_BRIGHTNESS,
      g_param_spec_int ("brightness", "Brightness",
          "Picture brightness, or more precisely, the black level", G_MININT,
          G_MAXINT, 0,
          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
280
  /**
281
   * GstV4l2Src:contrast:
282 283 284
   *
   * Picture contrast or luma gain
   */
285 286 287 288 289
  g_object_class_install_property (gobject_class, PROP_CONTRAST,
      g_param_spec_int ("contrast", "Contrast",
          "Picture contrast or luma gain", G_MININT,
          G_MAXINT, 0,
          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
290
  /**
291
   * GstV4l2Src:saturation:
292 293 294
   *
   * Picture color saturation or chroma gain
   */
295 296 297 298 299
  g_object_class_install_property (gobject_class, PROP_SATURATION,
      g_param_spec_int ("saturation", "Saturation",
          "Picture color saturation or chroma gain", G_MININT,
          G_MAXINT, 0,
          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
300
  /**
301
   * GstV4l2Src:hue:
302 303 304
   *
   * Hue or color balance
   */
305 306 307 308 309
  g_object_class_install_property (gobject_class, PROP_HUE,
      g_param_spec_int ("hue", "Hue",
          "Hue or color balance", G_MININT,
          G_MAXINT, 0,
          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
Rob Clark's avatar
Rob Clark committed
310 311

  /**
312
   * GstV4l2Src:norm:
Rob Clark's avatar
Rob Clark committed
313 314 315 316 317 318 319 320
   *
   * TV norm
   */
  g_object_class_install_property (gobject_class, PROP_TV_NORM,
      g_param_spec_enum ("norm", "TV norm",
          "video standard",
          GST_TYPE_V4L2_TV_NORM, DEFAULT_PROP_TV_NORM,
          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
Wim Taymans's avatar
Wim Taymans committed
321 322

  /**
323
   * GstV4l2Src:io-mode:
Wim Taymans's avatar
Wim Taymans committed
324 325 326 327 328 329 330 331
   *
   * IO Mode
   */
  g_object_class_install_property (gobject_class, PROP_IO_MODE,
      g_param_spec_enum ("io-mode", "IO mode",
          "I/O mode",
          GST_TYPE_V4L2_IO_MODE, DEFAULT_PROP_IO_MODE,
          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
332 333

  /**
334
   * GstV4l2Src:extra-controls:
335 336 337 338 339 340 341 342 343 344 345
   *
   * Additional v4l2 controls for the device. The controls are identified
   * by the control name (lowercase with '_' for any non-alphanumeric
   * characters).
   *
   * Since: 1.2
   */
  g_object_class_install_property (gobject_class, PROP_EXTRA_CONTROLS,
      g_param_spec_boxed ("extra-controls", "Extra Controls",
          "Extra v4l2 controls (CIDs) for the device",
          GST_TYPE_STRUCTURE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
346 347

  /**
348
   * GstV4l2Src:pixel-aspect-ratio:
349 350 351 352 353 354 355 356 357 358 359 360
   *
   * The pixel aspect ratio of the device. This overwrites the pixel aspect
   * ratio queried from the device.
   *
   * Since: 1.2
   */
  g_object_class_install_property (gobject_class, PROP_PIXEL_ASPECT_RATIO,
      g_param_spec_string ("pixel-aspect-ratio", "Pixel Aspect Ratio",
          "Overwrite the pixel aspect ratio of the device", "1/1",
          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));

  /**
361
   * GstV4l2Src:force-aspect-ratio:
362 363 364 365 366 367 368 369 370 371 372
   *
   * When enabled, the pixel aspect ratio queried from the device or set
   * with the pixel-aspect-ratio property will be enforced.
   *
   * Since: 1.2
   */
  g_object_class_install_property (gobject_class, PROP_FORCE_ASPECT_RATIO,
      g_param_spec_boolean ("force-aspect-ratio", "Force aspect ratio",
          "When enabled, the pixel aspect ratio will be enforced", TRUE,
          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));

373 374 375
}

GstV4l2Object *
376
gst_v4l2_object_new (GstElement * element,
Rob Clark's avatar
Rob Clark committed
377
    enum v4l2_buf_type type,
378
    const char *default_device,
379
    GstV4l2GetInOutFunction get_in_out_func,
380 381
    GstV4l2SetInOutFunction set_in_out_func,
    GstV4l2UpdateFpsFunction update_fps_func)
382 383 384 385
{
  GstV4l2Object *v4l2object;

  /*
Rob Clark's avatar
Rob Clark committed
386
   * some default values
387 388 389
   */
  v4l2object = g_new0 (GstV4l2Object, 1);

Rob Clark's avatar
Rob Clark committed
390 391 392
  v4l2object->type = type;
  v4l2object->formats = NULL;

393 394 395
  v4l2object->element = element;
  v4l2object->get_in_out_func = get_in_out_func;
  v4l2object->set_in_out_func = set_in_out_func;
396
  v4l2object->update_fps_func = update_fps_func;
397 398

  v4l2object->video_fd = -1;
399
  v4l2object->poll = gst_poll_new (TRUE);
400
  v4l2object->active = FALSE;
Rob Clark's avatar
Rob Clark committed
401
  v4l2object->videodev = g_strdup (default_device);
402

403 404
  v4l2object->norms = NULL;
  v4l2object->channels = NULL;
405 406 407 408
  v4l2object->colors = NULL;

  v4l2object->xwindow_id = 0;

409 410
  v4l2object->keep_aspect = TRUE;

411 412
  v4l2object->n_v4l2_planes = 0;

413 414
  v4l2object->no_initial_format = FALSE;

415 416 417
  return v4l2object;
}

Rob Clark's avatar
Rob Clark committed
418 419 420
static gboolean gst_v4l2_object_clear_format_list (GstV4l2Object * v4l2object);


421
void
422
gst_v4l2_object_destroy (GstV4l2Object * v4l2object)
423
{
424
  g_return_if_fail (v4l2object != NULL);
425

426 427 428
  if (v4l2object->videodev)
    g_free (v4l2object->videodev);

429 430 431
  if (v4l2object->poll)
    gst_poll_free (v4l2object->poll);

432 433 434
  if (v4l2object->channel)
    g_free (v4l2object->channel);

Rob Clark's avatar
Rob Clark committed
435 436 437 438
  if (v4l2object->formats) {
    gst_v4l2_object_clear_format_list (v4l2object);
  }

439 440 441 442
  if (v4l2object->probed_caps) {
    gst_caps_unref (v4l2object->probed_caps);
  }

443
  g_free (v4l2object);
444 445
}

Rob Clark's avatar
Rob Clark committed
446 447 448 449 450 451 452 453 454 455 456

static gboolean
gst_v4l2_object_clear_format_list (GstV4l2Object * v4l2object)
{
  g_slist_foreach (v4l2object->formats, (GFunc) g_free, NULL);
  g_slist_free (v4l2object->formats);
  v4l2object->formats = NULL;

  return TRUE;
}

457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480
static gint
gst_v4l2_object_prop_to_cid (guint prop_id)
{
  gint cid = -1;

  switch (prop_id) {
    case PROP_BRIGHTNESS:
      cid = V4L2_CID_BRIGHTNESS;
      break;
    case PROP_CONTRAST:
      cid = V4L2_CID_CONTRAST;
      break;
    case PROP_SATURATION:
      cid = V4L2_CID_SATURATION;
      break;
    case PROP_HUE:
      cid = V4L2_CID_HUE;
      break;
    default:
      GST_WARNING ("unmapped property id: %d", prop_id);
  }
  return cid;
}

Rob Clark's avatar
Rob Clark committed
481

482
gboolean
483
gst_v4l2_object_set_property_helper (GstV4l2Object * v4l2object,
484 485 486 487
    guint prop_id, const GValue * value, GParamSpec * pspec)
{
  switch (prop_id) {
    case PROP_DEVICE:
Wim Taymans's avatar
Wim Taymans committed
488
      g_free (v4l2object->videodev);
489
      v4l2object->videodev = g_value_dup_string (value);
490
      break;
491 492 493 494 495 496 497 498 499 500 501 502 503 504 505
    case PROP_BRIGHTNESS:
    case PROP_CONTRAST:
    case PROP_SATURATION:
    case PROP_HUE:
    {
      gint cid = gst_v4l2_object_prop_to_cid (prop_id);

      if (cid != -1) {
        if (GST_V4L2_IS_OPEN (v4l2object)) {
          gst_v4l2_set_attribute (v4l2object, cid, g_value_get_int (value));
        }
      }
      return TRUE;
    }
      break;
Rob Clark's avatar
Rob Clark committed
506 507
    case PROP_TV_NORM:
      v4l2object->tv_norm = g_value_get_enum (value);
508
      break;
Rob Clark's avatar
Rob Clark committed
509
#if 0
510
    case PROP_CHANNEL:
511 512 513
      if (GST_V4L2_IS_OPEN (v4l2object)) {
        GstTuner *tuner = GST_TUNER (v4l2object->element);
        GstTunerChannel *channel = gst_tuner_find_channel_by_name (tuner,
514
            (gchar *) g_value_get_string (value));
515 516 517 518 519 520 521

        if (channel) {
          /* like gst_tuner_set_channel (tuner, channel)
             without g_object_notify */
          gst_v4l2_tuner_set_channel (v4l2object, channel);
        }
      } else {
522 523
        g_free (v4l2object->channel);
        v4l2object->channel = g_value_dup_string (value);
524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542
      }
      break;
    case PROP_FREQUENCY:
      if (GST_V4L2_IS_OPEN (v4l2object)) {
        GstTuner *tuner = GST_TUNER (v4l2object->element);
        GstTunerChannel *channel = gst_tuner_get_channel (tuner);

        if (channel &&
            GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
          /* like
             gst_tuner_set_frequency (tuner, channel, g_value_get_ulong (value))
             without g_object_notify */
          gst_v4l2_tuner_set_frequency (v4l2object, channel,
              g_value_get_ulong (value));
        }
      } else {
        v4l2object->frequency = g_value_get_ulong (value);
      }
      break;
543
#endif
Wim Taymans's avatar
Wim Taymans committed
544 545 546
    case PROP_IO_MODE:
      v4l2object->req_mode = g_value_get_enum (value);
      break;
547 548 549 550 551 552 553 554 555 556 557
    case PROP_EXTRA_CONTROLS:{
      const GstStructure *s = gst_value_get_structure (value);

      if (v4l2object->extra_controls)
        gst_structure_free (v4l2object->extra_controls);

      v4l2object->extra_controls = s ? gst_structure_copy (s) : NULL;
      if (GST_V4L2_IS_OPEN (v4l2object))
        gst_v4l2_set_controls (v4l2object, v4l2object->extra_controls);
      break;
    }
558 559 560 561 562 563 564 565 566 567 568 569 570 571 572
    case PROP_PIXEL_ASPECT_RATIO:
      g_free (v4l2object->par);
      v4l2object->par = g_new0 (GValue, 1);
      g_value_init (v4l2object->par, GST_TYPE_FRACTION);
      if (!g_value_transform (value, v4l2object->par)) {
        g_warning ("Could not transform string to aspect ratio");
        gst_value_set_fraction (v4l2object->par, 1, 1);
      }
      GST_DEBUG_OBJECT (v4l2object->element, "set PAR to %d/%d",
          gst_value_get_fraction_numerator (v4l2object->par),
          gst_value_get_fraction_denominator (v4l2object->par));
      break;
    case PROP_FORCE_ASPECT_RATIO:
      v4l2object->keep_aspect = g_value_get_boolean (value);
      break;
573 574 575 576 577 578 579 580 581
    default:
      return FALSE;
      break;
  }
  return TRUE;
}


gboolean
582
gst_v4l2_object_get_property_helper (GstV4l2Object * v4l2object,
583 584 585 586 587 588 589 590
    guint prop_id, GValue * value, GParamSpec * pspec)
{
  switch (prop_id) {
    case PROP_DEVICE:
      g_value_set_string (value, v4l2object->videodev);
      break;
    case PROP_DEVICE_NAME:
    {
591
      const guchar *new = NULL;
592

593
      if (GST_V4L2_IS_OPEN (v4l2object)) {
594
        new = v4l2object->vcap.card;
595
      } else if (gst_v4l2_open (v4l2object)) {
596
        new = v4l2object->vcap.card;
597 598
        gst_v4l2_close (v4l2object);
      }
599
      g_value_set_string (value, (gchar *) new);
600 601
      break;
    }
602 603 604 605 606 607 608 609
    case PROP_DEVICE_FD:
    {
      if (GST_V4L2_IS_OPEN (v4l2object))
        g_value_set_int (value, v4l2object->video_fd);
      else
        g_value_set_int (value, DEFAULT_PROP_DEVICE_FD);
      break;
    }
610 611 612 613 614 615 616 617
    case PROP_FLAGS:
    {
      guint flags = 0;

      if (GST_V4L2_IS_OPEN (v4l2object)) {
        flags |= v4l2object->vcap.capabilities &
            (V4L2_CAP_VIDEO_CAPTURE |
            V4L2_CAP_VIDEO_OUTPUT |
Edgard Lima's avatar
Edgard Lima committed
618 619 620
            V4L2_CAP_VIDEO_OVERLAY |
            V4L2_CAP_VBI_CAPTURE |
            V4L2_CAP_VBI_OUTPUT | V4L2_CAP_TUNER | V4L2_CAP_AUDIO);
621 622 623 624 625 626

        if (v4l2object->vcap.capabilities & V4L2_CAP_VIDEO_CAPTURE_MPLANE)
          flags |= V4L2_CAP_VIDEO_CAPTURE;

        if (v4l2object->vcap.capabilities & V4L2_CAP_VIDEO_OUTPUT_MPLANE)
          flags |= V4L2_CAP_VIDEO_OUTPUT;
627 628 629 630
      }
      g_value_set_flags (value, flags);
      break;
    }
631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648
    case PROP_BRIGHTNESS:
    case PROP_CONTRAST:
    case PROP_SATURATION:
    case PROP_HUE:
    {
      gint cid = gst_v4l2_object_prop_to_cid (prop_id);

      if (cid != -1) {
        if (GST_V4L2_IS_OPEN (v4l2object)) {
          gint v;
          if (gst_v4l2_get_attribute (v4l2object, cid, &v)) {
            g_value_set_int (value, v);
          }
        }
      }
      return TRUE;
    }
      break;
Rob Clark's avatar
Rob Clark committed
649 650 651
    case PROP_TV_NORM:
      g_value_set_enum (value, v4l2object->tv_norm);
      break;
Wim Taymans's avatar
Wim Taymans committed
652 653 654
    case PROP_IO_MODE:
      g_value_set_enum (value, v4l2object->req_mode);
      break;
655 656 657
    case PROP_EXTRA_CONTROLS:
      gst_value_set_structure (value, v4l2object->extra_controls);
      break;
658 659 660 661 662 663 664
    case PROP_PIXEL_ASPECT_RATIO:
      if (v4l2object->par)
        g_value_transform (v4l2object->par, value);
      break;
    case PROP_FORCE_ASPECT_RATIO:
      g_value_set_boolean (value, v4l2object->keep_aspect);
      break;
665 666 667 668 669 670 671 672 673 674 675 676
    default:
      return FALSE;
      break;
  }
  return TRUE;
}

static void
gst_v4l2_set_defaults (GstV4l2Object * v4l2object)
{
  GstTunerNorm *norm = NULL;
  GstTunerChannel *channel = NULL;
Rob Clark's avatar
Rob Clark committed
677 678 679 680 681 682
  GstTuner *tuner;

  if (!GST_IS_TUNER (v4l2object->element))
    return;

  tuner = GST_TUNER (v4l2object->element);
683

Rob Clark's avatar
Rob Clark committed
684 685
  if (v4l2object->tv_norm)
    norm = gst_v4l2_tuner_get_norm_by_std_id (v4l2object, v4l2object->tv_norm);
686 687
  GST_DEBUG_OBJECT (v4l2object->element, "tv_norm=0x%" G_GINT64_MODIFIER "x, "
      "norm=%p", (guint64) v4l2object->tv_norm, norm);
688 689 690 691 692 693
  if (norm) {
    gst_tuner_set_norm (tuner, norm);
  } else {
    norm =
        GST_TUNER_NORM (gst_tuner_get_norm (GST_TUNER (v4l2object->element)));
    if (norm) {
Rob Clark's avatar
Rob Clark committed
694 695
      v4l2object->tv_norm =
          gst_v4l2_tuner_get_std_id_by_norm (v4l2object, norm);
696 697 698 699
      gst_tuner_norm_changed (tuner, norm);
    }
  }

700 701
  if (v4l2object->channel)
    channel = gst_tuner_find_channel_by_name (tuner, v4l2object->channel);
702 703 704 705
  if (channel) {
    gst_tuner_set_channel (tuner, channel);
  } else {
    channel =
706 707
        GST_TUNER_CHANNEL (gst_tuner_get_channel (GST_TUNER
            (v4l2object->element)));
708 709 710 711 712
    if (channel) {
      g_free (v4l2object->channel);
      v4l2object->channel = g_strdup (channel->label);
      gst_tuner_channel_changed (tuner, channel);
    }
713 714
  }

715 716
  if (channel
      && GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
717 718 719 720 721 722 723 724 725 726 727 728 729 730
    if (v4l2object->frequency != 0) {
      gst_tuner_set_frequency (tuner, channel, v4l2object->frequency);
    } else {
      v4l2object->frequency = gst_tuner_get_frequency (tuner, channel);
      if (v4l2object->frequency == 0) {
        /* guess */
        gst_tuner_set_frequency (tuner, channel, 1000);
      } else {
      }
    }
  }
}

gboolean
731
gst_v4l2_object_open (GstV4l2Object * v4l2object)
732 733 734 735 736 737 738 739 740
{
  if (gst_v4l2_open (v4l2object))
    gst_v4l2_set_defaults (v4l2object);
  else
    return FALSE;

  return TRUE;
}

741 742 743 744 745 746 747 748 749 750
gboolean
gst_v4l2_object_open_shared (GstV4l2Object * v4l2object, GstV4l2Object * other)
{
  gboolean ret;

  ret = gst_v4l2_dup (v4l2object, other);

  return ret;
}

751
gboolean
752
gst_v4l2_object_close (GstV4l2Object * v4l2object)
753 754 755 756
{
  if (!gst_v4l2_close (v4l2object))
    return FALSE;

757 758
  gst_caps_replace (&v4l2object->probed_caps, NULL);

759 760 761 762
  if (v4l2object->formats) {
    gst_v4l2_object_clear_format_list (v4l2object);
  }

763 764
  return TRUE;
}
Rob Clark's avatar
Rob Clark committed
765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781

static struct v4l2_fmtdesc *
gst_v4l2_object_get_format_from_fourcc (GstV4l2Object * v4l2object,
    guint32 fourcc)
{
  struct v4l2_fmtdesc *fmt;
  GSList *walk;

  if (fourcc == 0)
    return NULL;

  walk = gst_v4l2_object_get_format_list (v4l2object);
  while (walk) {
    fmt = (struct v4l2_fmtdesc *) walk->data;
    if (fmt->pixelformat == fourcc)
      return fmt;
    /* special case for jpeg */
Thiago Santos's avatar
Thiago Santos committed
782
    if (fmt->pixelformat == V4L2_PIX_FMT_MJPEG ||
783 784 785 786
        fmt->pixelformat == V4L2_PIX_FMT_JPEG ||
        fmt->pixelformat == V4L2_PIX_FMT_PJPG) {
      if (fourcc == V4L2_PIX_FMT_JPEG || fourcc == V4L2_PIX_FMT_MJPEG ||
          fourcc == V4L2_PIX_FMT_PJPG) {
Thiago Santos's avatar
Thiago Santos committed
787 788
        return fmt;
      }
Rob Clark's avatar
Rob Clark committed
789 790 791 792 793 794 795 796 797 798
    }
    walk = g_slist_next (walk);
  }

  return NULL;
}



/* complete made up ranking, the values themselves are meaningless */
799 800
/* These ranks MUST be X such that X<<15 fits on a signed int - see
   the comment at the end of gst_v4l2_object_format_get_rank. */
Rob Clark's avatar
Rob Clark committed
801 802 803 804 805 806 807 808 809 810 811 812
#define YUV_BASE_RANK     1000
#define JPEG_BASE_RANK     500
#define DV_BASE_RANK       200
#define RGB_BASE_RANK      100
#define YUV_ODD_BASE_RANK   50
#define RGB_ODD_BASE_RANK   25
#define BAYER_BASE_RANK     15
#define S910_BASE_RANK      10
#define GREY_BASE_RANK       5
#define PWC_BASE_RANK        1

static gint
813
gst_v4l2_object_format_get_rank (const struct v4l2_fmtdesc *fmt)
Rob Clark's avatar
Rob Clark committed
814
{
815
  guint32 fourcc = fmt->pixelformat;
816
  gboolean emulated = ((fmt->flags & V4L2_FMT_FLAG_EMULATED) != 0);
817 818
  gint rank = 0;

Rob Clark's avatar
Rob Clark committed
819 820
  switch (fourcc) {
    case V4L2_PIX_FMT_MJPEG:
Thiago Santos's avatar
Thiago Santos committed
821
    case V4L2_PIX_FMT_PJPG:
822 823
      rank = JPEG_BASE_RANK;
      break;
Rob Clark's avatar
Rob Clark committed
824
    case V4L2_PIX_FMT_JPEG:
825 826
      rank = JPEG_BASE_RANK + 1;
      break;
827 828 829
    case V4L2_PIX_FMT_MPEG:    /* MPEG          */
      rank = JPEG_BASE_RANK + 2;
      break;
Rob Clark's avatar
Rob Clark committed
830 831 832 833 834 835

    case V4L2_PIX_FMT_RGB332:
    case V4L2_PIX_FMT_RGB555:
    case V4L2_PIX_FMT_RGB555X:
    case V4L2_PIX_FMT_RGB565:
    case V4L2_PIX_FMT_RGB565X:
836 837
      rank = RGB_ODD_BASE_RANK;
      break;
Rob Clark's avatar
Rob Clark committed
838 839 840

    case V4L2_PIX_FMT_RGB24:
    case V4L2_PIX_FMT_BGR24:
841 842
      rank = RGB_BASE_RANK - 1;
      break;
Rob Clark's avatar
Rob Clark committed
843 844 845

    case V4L2_PIX_FMT_RGB32:
    case V4L2_PIX_FMT_BGR32:
846 847
      rank = RGB_BASE_RANK;
      break;
Rob Clark's avatar
Rob Clark committed
848 849

    case V4L2_PIX_FMT_GREY:    /*  8  Greyscale     */
850 851
      rank = GREY_BASE_RANK;
      break;
Rob Clark's avatar
Rob Clark committed
852 853

    case V4L2_PIX_FMT_NV12:    /* 12  Y/CbCr 4:2:0  */
854
    case V4L2_PIX_FMT_NV12M:   /* Same as NV12      */
855
    case V4L2_PIX_FMT_NV12MT:  /* NV12 64x32 tile   */
Rob Clark's avatar
Rob Clark committed
856
    case V4L2_PIX_FMT_NV21:    /* 12  Y/CrCb 4:2:0  */
857
    case V4L2_PIX_FMT_NV21M:   /* Same as NV21      */
Rob Clark's avatar
Rob Clark committed
858 859
    case V4L2_PIX_FMT_YYUV:    /* 16  YUV 4:2:2     */
    case V4L2_PIX_FMT_HI240:   /*  8  8-bit color   */
860 861
      rank = YUV_ODD_BASE_RANK;
      break;
Rob Clark's avatar
Rob Clark committed
862 863

    case V4L2_PIX_FMT_YVU410:  /* YVU9,  9 bits per pixel */
864 865
      rank = YUV_BASE_RANK + 3;
      break;
Rob Clark's avatar
Rob Clark committed
866
    case V4L2_PIX_FMT_YUV410:  /* YUV9,  9 bits per pixel */
867 868
      rank = YUV_BASE_RANK + 2;
      break;
Rob Clark's avatar
Rob Clark committed
869
    case V4L2_PIX_FMT_YUV420:  /* I420, 12 bits per pixel */
870 871
      rank = YUV_BASE_RANK + 7;
      break;
Rob Clark's avatar
Rob Clark committed
872
    case V4L2_PIX_FMT_YUYV:    /* YUY2, 16 bits per pixel */
873 874
      rank = YUV_BASE_RANK + 10;
      break;
Rob Clark's avatar
Rob Clark committed
875
    case V4L2_PIX_FMT_YVU420:  /* YV12, 12 bits per pixel */
876 877
      rank = YUV_BASE_RANK + 6;
      break;
Rob Clark's avatar
Rob Clark committed
878
    case V4L2_PIX_FMT_UYVY:    /* UYVY, 16 bits per pixel */
879 880
      rank = YUV_BASE_RANK + 9;
      break;
Rob Clark's avatar
Rob Clark committed
881
    case V4L2_PIX_FMT_Y41P:    /* Y41P, 12 bits per pixel */
882 883
      rank = YUV_BASE_RANK + 5;
      break;
Rob Clark's avatar
Rob Clark committed
884
    case V4L2_PIX_FMT_YUV411P: /* Y41B, 12 bits per pixel */
885 886
      rank = YUV_BASE_RANK + 4;
      break;
Rob Clark's avatar
Rob Clark committed
887
    case V4L2_PIX_FMT_YUV422P: /* Y42B, 16 bits per pixel */
888 889
      rank = YUV_BASE_RANK + 8;
      break;
Rob Clark's avatar
Rob Clark committed
890 891

    case V4L2_PIX_FMT_DV:
892 893
      rank = DV_BASE_RANK;
      break;
Rob Clark's avatar
Rob Clark committed
894 895

    case V4L2_PIX_FMT_WNVA:    /* Winnov hw compres */
896 897
      rank = 0;
      break;
Rob Clark's avatar
Rob Clark committed
898 899

    case V4L2_PIX_FMT_SBGGR8:
900 901
      rank = BAYER_BASE_RANK;
      break;
Rob Clark's avatar
Rob Clark committed
902 903

    case V4L2_PIX_FMT_SN9C10X:
904 905
      rank = S910_BASE_RANK;
      break;
Rob Clark's avatar
Rob Clark committed
906 907

    case V4L2_PIX_FMT_PWC1:
908 909
      rank = PWC_BASE_RANK;
      break;
Rob Clark's avatar
Rob Clark committed
910
    case V4L2_PIX_FMT_PWC2:
911 912
      rank = PWC_BASE_RANK;
      break;
Rob Clark's avatar
Rob Clark committed
913 914

    default:
915
      rank = 0;
Rob Clark's avatar
Rob Clark committed
916 917 918
      break;
  }

919 920 921 922 923 924 925 926
  /* All ranks are below 1<<15 so a shift by 15
   * will a) make all non-emulated formats larger
   * than emulated and b) will not overflow
   */
  if (!emulated)
    rank <<= 15;

  return rank;
Rob Clark's avatar
Rob Clark committed
927 928 929 930 931 932 933
}



static gint
format_cmp_func (gconstpointer a, gconstpointer b)
{
934 935
  const struct v4l2_fmtdesc *fa = a;
  const struct v4l2_fmtdesc *fb = b;
Rob Clark's avatar
Rob Clark committed
936

937
  if (fa->pixelformat == fb->pixelformat)
Rob Clark's avatar
Rob Clark committed
938 939
    return 0;

940 941
  return gst_v4l2_object_format_get_rank (fb) -
      gst_v4l2_object_format_get_rank (fa);
Rob Clark's avatar
Rob Clark committed
942 943 944 945 946 947 948 949
}

/******************************************************
 * gst_v4l2_object_fill_format_list():
 *   create list of supported capture formats
 * return value: TRUE on success, FALSE on error
 ******************************************************/
static gboolean
950 951
gst_v4l2_object_fill_format_list (GstV4l2Object * v4l2object,
    enum v4l2_buf_type type)
Rob Clark's avatar
Rob Clark committed
952 953 954 955 956 957 958 959 960 961 962
{
  gint n;
  struct v4l2_fmtdesc *format;

  GST_DEBUG_OBJECT (v4l2object->element, "getting src format enumerations");

  /* format enumeration */
  for (n = 0;; n++) {
    format = g_new0 (struct v4l2_fmtdesc, 1);

    format->index = n;
963
    format->type = type;
Rob Clark's avatar
Rob Clark committed
964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988

    if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_ENUM_FMT, format) < 0) {
      if (errno == EINVAL) {
        g_free (format);
        break;                  /* end of enumeration */
      } else {
        goto failed;
      }
    }

    GST_LOG_OBJECT (v4l2object->element, "index:       %u", format->index);
    GST_LOG_OBJECT (v4l2object->element, "type:        %d", format->type);
    GST_LOG_OBJECT (v4l2object->element, "flags:       %08x", format->flags);
    GST_LOG_OBJECT (v4l2object->element, "description: '%s'",
        format->description);
    GST_LOG_OBJECT (v4l2object->element, "pixelformat: %" GST_FOURCC_FORMAT,
        GST_FOURCC_ARGS (format->pixelformat));

    /* sort formats according to our preference;  we do this, because caps
     * are probed in the order the formats are in the list, and the order of
     * formats in the final probed caps matters for things like fixation */
    v4l2object->formats = g_slist_insert_sorted (v4l2object->formats, format,
        (GCompareFunc) format_cmp_func);
  }

989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002
#ifndef GST_DISABLE_GST_DEBUG
  {
    GSList *l;

    GST_INFO_OBJECT (v4l2object->element, "got %d format(s):", n);
    for (l = v4l2object->formats; l != NULL; l = l->next) {
      format = l->data;

      GST_INFO_OBJECT (v4l2object->element,
          "  %" GST_FOURCC_FORMAT "%s", GST_FOURCC_ARGS (format->pixelformat),
          ((format->flags & V4L2_FMT_FLAG_EMULATED)) ? " (emulated)" : "");
    }
  }
#endif
Rob Clark's avatar
Rob Clark committed
1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015

  return TRUE;

  /* ERRORS */
failed:
  {
    GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
        (_("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)));
    g_free (format);
    return FALSE;
  }
}

Stefan Kost's avatar
Stefan Kost committed
1016
/*
1017 1018 1019
  * Get the list of supported capture formats, a list of
  * <code>struct v4l2_fmtdesc</code>.
  */
1020
static GSList *
Rob Clark's avatar
Rob Clark committed
1021 1022
gst_v4l2_object_get_format_list (GstV4l2Object * v4l2object)
{
1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048
  if (!v4l2object->formats) {

    /* check usual way */
    gst_v4l2_object_fill_format_list (v4l2object, v4l2object->type);

    /* if our driver supports multi-planar
     * and if formats are still empty then we can workaround driver bug
     * by also looking up formats as if our device was not supporting
     * multiplanar */
    if (!v4l2object->formats) {
      switch (v4l2object->type) {
        case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
          gst_v4l2_object_fill_format_list (v4l2object,
              V4L2_BUF_TYPE_VIDEO_CAPTURE);
          break;

        case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
          gst_v4l2_object_fill_format_list (v4l2object,
              V4L2_BUF_TYPE_VIDEO_OUTPUT);
          break;

        default:
          break;
      }
    }
  }
Rob Clark's avatar
Rob Clark committed
1049 1050 1051
  return v4l2object->formats;
}

1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073
static GstVideoFormat
gst_v4l2_object_v4l2fourcc_to_video_format (guint32 fourcc)
{
  GstVideoFormat format;

  switch (fourcc) {
    case V4L2_PIX_FMT_GREY:    /*  8  Greyscale     */
      format = GST_VIDEO_FORMAT_GRAY8;
      break;
    case V4L2_PIX_FMT_RGB555:
      format = GST_VIDEO_FORMAT_RGB15;
      break;
    case V4L2_PIX_FMT_RGB565:
      format = GST_VIDEO_FORMAT_RGB16;
      break;
    case V4L2_PIX_FMT_RGB24:
      format = GST_VIDEO_FORMAT_RGB;
      break;
    case V4L2_PIX_FMT_BGR24:
      format = GST_VIDEO_FORMAT_BGR;
      break;
    case V4L2_PIX_FMT_RGB32:
1074
      format = GST_VIDEO_FORMAT_xRGB;
1075 1076 1077 1078 1079 1080 1081 1082
      break;
    case V4L2_PIX_FMT_BGR32:
      format = GST_VIDEO_FORMAT_BGRx;
      break;
    case V4L2_PIX_FMT_NV12:
    case V4L2_PIX_FMT_NV12M:
      format = GST_VIDEO_FORMAT_NV12;
      break;
1083 1084 1085
    case V4L2_PIX_FMT_NV12MT:
      format = GST_VIDEO_FORMAT_NV12_64Z32;
      break;
1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128
    case V4L2_PIX_FMT_NV21:
    case V4L2_PIX_FMT_NV21M:
      format = GST_VIDEO_FORMAT_NV21;
      break;
    case V4L2_PIX_FMT_YVU410:
      format = GST_VIDEO_FORMAT_YVU9;
      break;
    case V4L2_PIX_FMT_YUV410:
      format = GST_VIDEO_FORMAT_YUV9;
      break;
    case V4L2_PIX_FMT_YUV420:
      format = GST_VIDEO_FORMAT_I420;
      break;
    case V4L2_PIX_FMT_YUYV:
      format = GST_VIDEO_FORMAT_YUY2;
      break;
    case V4L2_PIX_FMT_YVU420:
      format = GST_VIDEO_FORMAT_YV12;
      break;
    case V4L2_PIX_FMT_UYVY:
      format = GST_VIDEO_FORMAT_UYVY;
      break;
#if 0
    case V4L2_PIX_FMT_Y41P:
      format = GST_VIDEO_FORMAT_Y41P;
      break;
#endif
    case V4L2_PIX_FMT_YUV411P:
      format = GST_VIDEO_FORMAT_Y41B;
      break;
    case V4L2_PIX_FMT_YUV422P:
      format = GST_VIDEO_FORMAT_Y42B;
      break;
    case V4L2_PIX_FMT_YVYU:
      format = GST_VIDEO_FORMAT_YVYU;
      break;
    default:
      format = GST_VIDEO_FORMAT_UNKNOWN;
      break;
  }

  return format;
}
Rob Clark's avatar
Rob Clark committed
1129

1130 1131
static GstStructure *
gst_v4l2_object_v4l2fourcc_to_bare_struct (guint32 fourcc)
Rob Clark's avatar
Rob Clark committed
1132 1133 1134 1135 1136
{
  GstStructure *structure = NULL;

  switch (fourcc) {
    case V4L2_PIX_FMT_MJPEG:   /* Motion-JPEG */
Thiago Santos's avatar
Thiago Santos committed
1137
    case V4L2_PIX_FMT_PJPG:    /* Progressive-JPEG */
Rob Clark's avatar
Rob Clark committed
1138
    case V4L2_PIX_FMT_JPEG:    /* JFIF JPEG */
Wim Taymans's avatar
Wim Taymans committed
1139
      structure = gst_structure_new_empty ("image/jpeg");
Rob Clark's avatar
Rob Clark committed
1140 1141 1142 1143 1144
      break;
    case V4L2_PIX_FMT_YYUV:    /* 16  YUV 4:2:2     */
    case V4L2_PIX_FMT_HI240:   /*  8  8-bit color   */
      /* FIXME: get correct fourccs here */
      break;
1145 1146 1147 1148 1149 1150 1151 1152
    case V4L2_PIX_FMT_MPEG1:
      structure = gst_structure_new ("video/mpeg",
          "mpegversion", G_TYPE_INT, 2, NULL);
      break;
    case V4L2_PIX_FMT_MPEG2:
      structure = gst_structure_new ("video/mpeg",
          "mpegversion", G_TYPE_INT, 2, NULL);
      break;
1153 1154 1155 1156 1157 1158 1159 1160 1161
    case V4L2_PIX_FMT_MPEG4:
      structure = gst_structure_new ("video/mpeg",
          "mpegversion", G_TYPE_INT, 4, "systemstream",
          G_TYPE_BOOLEAN, FALSE, NULL);
      break;
    case V4L2_PIX_FMT_H263:
      structure = gst_structure_new ("video/x-h263",
          "variant", G_TYPE_STRING, "itu", NULL);
      break;
1162
    case V4L2_PIX_FMT_H264:    /* H.264 */
Nicolas Dufresne's avatar
Nicolas Dufresne committed
1163 1164 1165
      structure = gst_structure_new ("video/x-h264",
          "stream-format", G_TYPE_STRING, "byte-stream", "alignment",
          G_TYPE_STRING, "au", NULL);
1166
      break;
1167 1168 1169
    case V4L2_PIX_FMT_VP8:
      structure = gst_structure_new_empty ("video/x-vp8");
      break;
1170 1171 1172 1173 1174
    case V4L2_PIX_FMT_RGB332:
    case V4L2_PIX_FMT_RGB555X:
    case V4L2_PIX_FMT_RGB565X:
      /* FIXME: get correct fourccs here */
      break;
1175
    case V4L2_PIX_FMT_GREY:    /*  8  Greyscale     */
1176 1177 1178 1179 1180 1181
    case V4L2_PIX_FMT_RGB555:
    case V4L2_PIX_FMT_RGB565:
    case V4L2_PIX_FMT_RGB24:
    case V4L2_PIX_FMT_BGR24:
    case V4L2_PIX_FMT_RGB32:
    case V4L2_PIX_FMT_BGR32:
Rob Clark's avatar
Rob Clark committed
1182
    case V4L2_PIX_FMT_NV12:    /* 12  Y/CbCr 4:2:0  */
1183
    case V4L2_PIX_FMT_NV12M:
1184
    case V4L2_PIX_FMT_NV12MT:
Rob Clark's avatar
Rob Clark committed
1185
    case V4L2_PIX_FMT_NV21:    /* 12  Y/CrCb 4:2:0  */
1186
    case V4L2_PIX_FMT_NV21M:
Rob Clark's avatar
Rob Clark committed
1187 1188 1189 1190 1191 1192
    case V4L2_PIX_FMT_YVU410:
    case V4L2_PIX_FMT_YUV410:
    case V4L2_PIX_FMT_YUV420:  /* I420/IYUV */
    case V4L2_PIX_FMT_YUYV:
    case V4L2_PIX_FMT_YVU420:
    case V4L2_PIX_FMT_UYVY:
1193
#if 0
Rob Clark's avatar
Rob Clark committed
1194
    case V4L2_PIX_FMT_Y41P:
1195
#endif
Rob Clark's avatar
Rob Clark committed
1196 1197 1198
    case V4L2_PIX_FMT_YUV422P:
    case V4L2_PIX_FMT_YVYU:
    case V4L2_PIX_FMT_YUV411P:{
1199
      GstVideoFormat format;
1200
      format = gst_v4l2_object_v4l2fourcc_to_video_format (fourcc);