1 /*****************************************************************************
2 * v4l.c : Video4Linux input module for vlc
3 *****************************************************************************
4 * Copyright (C) 2002-2004 the VideoLAN team
7 * Author: Laurent Aimar <fenrir@via.ecp.fr>
8 * Paul Forgey <paulf at aphrodite dot com>
9 * Gildas Bazin <gbazin@videolan.org>
10 * Benjamin Pracht <bigben at videolan dot org>
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
25 *****************************************************************************/
27 /*****************************************************************************
29 *****************************************************************************/
36 #include <vlc_input.h>
37 #include <vlc_demux.h>
38 #include <vlc_access.h>
42 #include <sys/types.h>
44 #include <sys/ioctl.h>
50 /* From GStreamer's v4l plugin:
51 * Because of some really cool feature in video4linux1, also known as
52 * 'not including sys/types.h and sys/time.h', we had to include it
53 * ourselves. In all their intelligence, these people decided to fix
54 * this in the next version (video4linux2) in such a cool way that it
55 * breaks all compilations of old stuff...
56 * The real problem is actually that linux/time.h doesn't use proper
57 * macro checks before defining types like struct timeval. The proper
58 * fix here is to either fuck the kernel header (which is what we do
59 * by defining _LINUX_TIME_H, an innocent little hack) or by fixing it
60 * upstream, which I'll consider doing later on. If you get compiler
61 * errors here, check your linux/time.h && sys/time.h header setup.
65 #include <linux/videodev.h>
66 #include "videodev_mjpeg.h"
68 #include <sys/soundcard.h>
70 /*****************************************************************************
72 *****************************************************************************/
73 static int Open ( vlc_object_t * );
74 static void Close( vlc_object_t * );
76 #define CACHING_TEXT N_("Caching value in ms")
77 #define CACHING_LONGTEXT N_( \
78 "Caching value for V4L captures. This " \
79 "value should be set in milliseconds." )
80 #define VDEV_TEXT N_("Video device name")
81 #define VDEV_LONGTEXT N_( \
82 "Name of the video device to use. " \
83 "If you don't specify anything, no video device will be used.")
84 #define ADEV_TEXT N_("Audio device name")
85 #define ADEV_LONGTEXT N_( \
86 "Name of the audio device to use. " \
87 "If you don't specify anything, no audio device will be used.")
88 #define CHROMA_TEXT N_("Video input chroma format")
89 #define CHROMA_LONGTEXT N_( \
90 "Force the Video4Linux video device to use a specific chroma format " \
91 "(eg. I420 (default), RV24, etc.)")
92 #define FREQUENCY_TEXT N_( "Frequency" )
93 #define FREQUENCY_LONGTEXT N_( \
94 "Frequency to capture (in kHz), if applicable." )
95 #define CHANNEL_TEXT N_( "Channel" )
96 #define CHANNEL_LONGTEXT N_( \
97 "Channel of the card to use (Usually, 0 = tuner, " \
98 "1 = composite, 2 = svideo)." )
99 #define NORM_TEXT N_( "Norm" )
100 #define NORM_LONGTEXT N_( \
101 "Norm of the stream (Automatic, SECAM, PAL, or NTSC)." )
102 #define AUDIO_TEXT N_( "Audio Channel" )
103 #define AUDIO_LONGTEXT N_( \
104 "Audio Channel to use, if there are several audio inputs." )
105 #define WIDTH_TEXT N_( "Width" )
106 #define WIDTH_LONGTEXT N_( "Width of the stream to capture " \
107 "(-1 for autodetect)." )
108 #define HEIGHT_TEXT N_( "Height" )
109 #define HEIGHT_LONGTEXT N_( "Height of the stream to capture " \
110 "(-1 for autodetect)." )
111 #define BRIGHTNESS_TEXT N_( "Brightness" )
112 #define BRIGHTNESS_LONGTEXT N_( \
113 "Brightness of the video input." )
114 #define HUE_TEXT N_( "Hue" )
115 #define HUE_LONGTEXT N_( \
116 "Hue of the video input." )
117 #define COLOUR_TEXT N_( "Color" )
118 #define COLOUR_LONGTEXT N_( \
119 "Color of the video input." )
120 #define CONTRAST_TEXT N_( "Contrast" )
121 #define CONTRAST_LONGTEXT N_( \
122 "Contrast of the video input." )
123 #define TUNER_TEXT N_( "Tuner" )
124 #define TUNER_LONGTEXT N_( "Tuner to use, if there are several ones." )
125 #define SAMPLERATE_TEXT N_( "Samplerate" )
126 #define SAMPLERATE_LONGTEXT N_( \
127 "Samplerate of the captured audio stream, in Hz (eg: 11025, 22050, 44100)" )
128 #define STEREO_TEXT N_( "Stereo" )
129 #define STEREO_LONGTEXT N_( \
130 "Capture the audio stream in stereo." )
131 #define MJPEG_TEXT N_( "MJPEG" )
132 #define MJPEG_LONGTEXT N_( \
133 "Set this option if the capture device outputs MJPEG" )
134 #define DECIMATION_TEXT N_( "Decimation" )
135 #define DECIMATION_LONGTEXT N_( \
136 "Decimation level for MJPEG streams" )
137 #define QUALITY_TEXT N_( "Quality" )
138 #define QUALITY_LONGTEXT N_( "Quality of the stream." )
139 #define FPS_TEXT N_( "Framerate" )
140 #define FPS_LONGTEXT N_( "Framerate to capture, if applicable " \
141 "(-1 for autodetect)." )
143 static int i_norm_list[] =
144 { VIDEO_MODE_AUTO, VIDEO_MODE_SECAM, VIDEO_MODE_PAL, VIDEO_MODE_NTSC };
145 static char *psz_norm_list_text[] =
146 { N_("Automatic"), N_("SECAM"), N_("PAL"), N_("NTSC") };
149 set_shortname( _("Video4Linux") );
150 set_description( _("Video4Linux input") );
151 set_category( CAT_INPUT );
152 set_subcategory( SUBCAT_INPUT_ACCESS );
154 add_integer( "v4l-caching", DEFAULT_PTS_DELAY / 1000, NULL,
155 CACHING_TEXT, CACHING_LONGTEXT, VLC_TRUE );
156 add_string( "v4l-vdev", "/dev/video", 0, VDEV_TEXT, VDEV_LONGTEXT,
158 add_string( "v4l-adev", "/dev/dsp", 0, ADEV_TEXT, ADEV_LONGTEXT,
160 add_string( "v4l-chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
162 add_float( "v4l-fps", -1.0, NULL, FPS_TEXT, FPS_LONGTEXT, VLC_TRUE );
163 add_integer( "v4l-samplerate", 44100, NULL, SAMPLERATE_TEXT,
164 SAMPLERATE_LONGTEXT, VLC_TRUE );
165 add_integer( "v4l-channel", 0, NULL, CHANNEL_TEXT, CHANNEL_LONGTEXT,
167 add_integer( "v4l-tuner", -1, NULL, TUNER_TEXT, TUNER_LONGTEXT, VLC_TRUE );
168 add_integer( "v4l-norm", VIDEO_MODE_AUTO, NULL, NORM_TEXT, NORM_LONGTEXT,
170 change_integer_list( i_norm_list, psz_norm_list_text, 0 );
171 add_integer( "v4l-frequency", -1, NULL, FREQUENCY_TEXT, FREQUENCY_LONGTEXT,
173 add_integer( "v4l-audio", -1, NULL, AUDIO_TEXT, AUDIO_LONGTEXT, VLC_TRUE );
174 add_bool( "v4l-stereo", VLC_TRUE, NULL, STEREO_TEXT, STEREO_LONGTEXT,
176 add_integer( "v4l-width", 0, NULL, WIDTH_TEXT, WIDTH_LONGTEXT, VLC_TRUE );
177 add_integer( "v4l-height", 0, NULL, HEIGHT_TEXT, HEIGHT_LONGTEXT,
179 add_integer( "v4l-brightness", -1, NULL, BRIGHTNESS_TEXT,
180 BRIGHTNESS_LONGTEXT, VLC_TRUE );
181 add_integer( "v4l-colour", -1, NULL, COLOUR_TEXT, COLOUR_LONGTEXT,
183 add_integer( "v4l-hue", -1, NULL, HUE_TEXT, HUE_LONGTEXT, VLC_TRUE );
184 add_integer( "v4l-contrast", -1, NULL, CONTRAST_TEXT, CONTRAST_LONGTEXT,
186 add_bool( "v4l-mjpeg", VLC_FALSE, NULL, MJPEG_TEXT, MJPEG_LONGTEXT,
188 add_integer( "v4l-decimation", 1, NULL, DECIMATION_TEXT,
189 DECIMATION_LONGTEXT, VLC_TRUE );
190 add_integer( "v4l-quality", 100, NULL, QUALITY_TEXT, QUALITY_LONGTEXT,
193 add_shortcut( "v4l" );
194 set_capability( "access_demux", 10 );
195 set_callbacks( Open, Close );
198 /*****************************************************************************
199 * Access: local prototypes
200 *****************************************************************************/
201 static int Demux ( demux_t * );
202 static int Control( demux_t *, int, va_list );
204 static void ParseMRL ( demux_t * );
205 static int OpenVideoDev( demux_t *, char * );
206 static int OpenAudioDev( demux_t *, char * );
208 static block_t *GrabAudio( demux_t * );
209 static block_t *GrabVideo( demux_t * );
211 #define MJPEG_BUFFER_SIZE (256*1024)
213 struct quicktime_mjpeg_app1
215 uint32_t i_reserved; /* set to 0 */
216 uint32_t i_tag; /* 'mjpg' */
217 uint32_t i_field_size; /* offset following EOI */
218 uint32_t i_padded_field_size; /* offset following EOI+pad */
219 uint32_t i_next_field; /* offset to next field */
220 uint32_t i_DQT_offset;
221 uint32_t i_DHT_offset;
222 uint32_t i_SOF_offset;
223 uint32_t i_SOS_offset;
224 uint32_t i_data_offset; /* following SOS marker data */
232 } v4lchroma_to_fourcc[] =
234 { VIDEO_PALETTE_GREY, VLC_FOURCC( 'G', 'R', 'E', 'Y' ) },
235 { VIDEO_PALETTE_HI240, VLC_FOURCC( 'I', '2', '4', '0' ) },
236 { VIDEO_PALETTE_RGB565, VLC_FOURCC( 'R', 'V', '1', '6' ) },
237 { VIDEO_PALETTE_RGB555, VLC_FOURCC( 'R', 'V', '1', '5' ) },
238 { VIDEO_PALETTE_RGB24, VLC_FOURCC( 'R', 'V', '2', '4' ) },
239 { VIDEO_PALETTE_RGB32, VLC_FOURCC( 'R', 'V', '3', '2' ) },
240 { VIDEO_PALETTE_YUV422, VLC_FOURCC( 'I', '4', '2', '2' ) },
241 { VIDEO_PALETTE_YUYV, VLC_FOURCC( 'Y', 'U', 'Y', 'V' ) },
242 { VIDEO_PALETTE_UYVY, VLC_FOURCC( 'U', 'Y', 'V', 'Y' ) },
243 { VIDEO_PALETTE_YUV420, VLC_FOURCC( 'I', '4', '2', 'N' ) },
244 { VIDEO_PALETTE_YUV411, VLC_FOURCC( 'I', '4', '1', 'N' ) },
245 { VIDEO_PALETTE_RAW, VLC_FOURCC( 'G', 'R', 'A', 'W' ) },
246 { VIDEO_PALETTE_YUV422P, VLC_FOURCC( 'I', '4', '2', '2' ) },
247 { VIDEO_PALETTE_YUV420P, VLC_FOURCC( 'I', '4', '2', '0' ) },
248 { VIDEO_PALETTE_YUV411P, VLC_FOURCC( 'I', '4', '1', '1' ) },
255 char *psz_device; /* Main device from MRL, can be video or audio */
263 /* Video properties */
280 float f_fps; /* <= 0.0 mean to grab at full rate */
281 mtime_t i_video_pts; /* only used when f_fps > 0 */
287 struct video_capability vid_cap;
288 struct video_mbuf vid_mbuf;
289 struct mjpeg_requestbuffers mjpeg_buffers;
291 uint8_t *p_video_mmap;
294 struct video_mmap vid_mmap;
295 struct video_picture vid_picture;
297 int i_video_frame_size;
298 es_out_id_t *p_es_video;
300 /* Audio properties */
301 vlc_fourcc_t i_acodec_raw;
304 int i_audio_max_frame_size;
305 block_t *p_block_audio;
306 es_out_id_t *p_es_audio;
309 /*****************************************************************************
310 * Open: opens v4l device
311 *****************************************************************************
313 * url: <video device>::::
315 *****************************************************************************/
316 static int Open( vlc_object_t *p_this )
318 demux_t *p_demux = (demux_t*)p_this;
322 /* Only when selected */
323 if( *p_demux->psz_access == '\0' )
327 p_demux->pf_demux = Demux;
328 p_demux->pf_control = Control;
329 p_demux->info.i_update = 0;
330 p_demux->info.i_title = 0;
331 p_demux->info.i_seekpoint = 0;
332 p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
333 memset( p_sys, 0, sizeof( demux_sys_t ) );
335 var_Create( p_demux, "v4l-audio", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
336 var_Get( p_demux, "v4l-audio", &val );
337 p_sys->i_audio = val.i_int;
339 var_Create( p_demux, "v4l-channel", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
340 var_Get( p_demux, "v4l-channel", &val );
341 p_sys->i_channel = val.i_int;
343 var_Create( p_demux, "v4l-norm", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
344 var_Get( p_demux, "v4l-norm", &val );
345 p_sys->i_norm = val.i_int;
347 var_Create( p_demux, "v4l-tuner", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
348 var_Get( p_demux, "v4l-tuner", &val );
349 p_sys->i_tuner = val.i_int;
351 var_Create( p_demux, "v4l-frequency",
352 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
353 var_Get( p_demux, "v4l-frequency", &val );
354 p_sys->i_frequency = val.i_int;
356 var_Create( p_demux, "v4l-fps", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
357 var_Get( p_demux, "v4l-fps", &val );
358 p_sys->f_fps = val.f_float;
360 var_Create( p_demux, "v4l-width", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
361 var_Get( p_demux, "v4l-width", &val );
362 p_sys->i_width = val.i_int;
364 var_Create( p_demux, "v4l-height", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
365 var_Get( p_demux, "v4l-height", &val );
366 p_sys->i_height = val.i_int;
368 p_sys->i_video_pts = -1;
370 var_Create( p_demux, "v4l-brightness", VLC_VAR_INTEGER |
372 var_Get( p_demux, "v4l-brightness", &val );
373 p_sys->i_brightness = val.i_int;
375 var_Create( p_demux, "v4l-hue", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
376 var_Get( p_demux, "v4l-hue", &val );
379 var_Create( p_demux, "v4l-colour", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
380 var_Get( p_demux, "v4l-colour", &val );
381 p_sys->i_colour = val.i_int;
383 var_Create( p_demux, "v4l-contrast", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
384 var_Get( p_demux, "v4l-contrast", &val );
385 p_sys->i_contrast = val.i_int;
387 var_Create( p_demux, "v4l-mjpeg", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
388 var_Get( p_demux, "v4l-mjpeg", &val );
389 p_sys->b_mjpeg = val.b_bool;
391 var_Create( p_demux, "v4l-decimation", VLC_VAR_INTEGER |
393 var_Get( p_demux, "v4l-decimation", &val );
394 p_sys->i_decimation = val.i_int;
396 var_Create( p_demux, "v4l-quality", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
397 var_Get( p_demux, "v4l-quality", &val );
398 p_sys->i_quality = val.i_int;
400 var_Create( p_demux, "v4l-samplerate",
401 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
402 var_Get( p_demux, "v4l-samplerate", &val );
403 p_sys->i_sample_rate = val.i_int;
405 var_Create( p_demux, "v4l-stereo", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
406 var_Get( p_demux, "v4l-stereo", &val );
407 p_sys->b_stereo = val.b_bool;
409 p_sys->psz_device = p_sys->psz_vdev = p_sys->psz_adev = NULL;
410 p_sys->fd_video = -1;
411 p_sys->fd_audio = -1;
413 p_sys->p_es_video = p_sys->p_es_audio = 0;
414 p_sys->p_block_audio = 0;
418 /* Find main device (video or audio) */
419 if( p_sys->psz_device && *p_sys->psz_device )
421 msg_Dbg( p_demux, "main device=`%s'", p_sys->psz_device );
423 /* Try to open as video device */
424 p_sys->fd_video = OpenVideoDev( p_demux, p_sys->psz_device );
426 if( p_sys->fd_video < 0 )
428 /* Try to open as audio device */
429 p_sys->fd_audio = OpenAudioDev( p_demux, p_sys->psz_device );
430 if( p_sys->fd_audio >= 0 )
432 if( p_sys->psz_adev ) free( p_sys->psz_adev );
433 p_sys->psz_adev = p_sys->psz_device;
434 p_sys->psz_device = NULL;
439 if( p_sys->psz_vdev ) free( p_sys->psz_vdev );
440 p_sys->psz_vdev = p_sys->psz_device;
441 p_sys->psz_device = NULL;
445 /* If no device opened, only continue if the access was forced */
446 if( p_sys->fd_video < 0 && p_sys->fd_audio < 0 )
448 if( strcmp( p_demux->psz_access, "v4l" ) )
455 /* Find video device */
456 if( p_sys->fd_video < 0 )
458 if( !p_sys->psz_vdev || !*p_sys->psz_vdev )
460 if( p_sys->psz_vdev ) free( p_sys->psz_vdev );
461 p_sys->psz_vdev = var_CreateGetString( p_demux, "v4l-vdev" );;
464 if( p_sys->psz_vdev && *p_sys->psz_vdev )
466 p_sys->fd_video = OpenVideoDev( p_demux, p_sys->psz_vdev );
470 /* Find audio device */
471 if( p_sys->fd_audio < 0 )
473 if( !p_sys->psz_adev || !*p_sys->psz_adev )
475 if( p_sys->psz_adev ) free( p_sys->psz_adev );
476 p_sys->psz_adev = var_CreateGetString( p_demux, "v4l-adev" );;
479 if( p_sys->psz_adev && *p_sys->psz_adev )
481 p_sys->fd_audio = OpenAudioDev( p_demux, p_sys->psz_adev );
485 if( p_sys->fd_video < 0 && p_sys->fd_audio < 0 )
491 msg_Dbg( p_demux, "v4l grabbing started" );
493 /* Declare elementary streams */
494 if( p_sys->fd_video >= 0 )
497 es_format_Init( &fmt, VIDEO_ES, p_sys->i_fourcc );
498 fmt.video.i_width = p_sys->i_width;
499 fmt.video.i_height = p_sys->i_height;
500 fmt.video.i_aspect = 4 * VOUT_ASPECT_FACTOR / 3;
502 /* Setup rgb mask for RGB formats */
503 if( p_sys->i_fourcc == VLC_FOURCC('R','V','2','4') )
505 /* This is in BGR format */
506 fmt.video.i_bmask = 0x00ff0000;
507 fmt.video.i_gmask = 0x0000ff00;
508 fmt.video.i_rmask = 0x000000ff;
511 msg_Dbg( p_demux, "added new video es %4.4s %dx%d",
512 (char*)&fmt.i_codec, fmt.video.i_width, fmt.video.i_height );
513 p_sys->p_es_video = es_out_Add( p_demux->out, &fmt );
516 if( p_sys->fd_audio >= 0 )
519 es_format_Init( &fmt, AUDIO_ES, VLC_FOURCC('a','r','a','w') );
521 fmt.audio.i_channels = p_sys->b_stereo ? 2 : 1;
522 fmt.audio.i_rate = p_sys->i_sample_rate;
523 fmt.audio.i_bitspersample = 16; // FIXME ?
524 fmt.audio.i_blockalign = fmt.audio.i_channels *
525 fmt.audio.i_bitspersample / 8;
526 fmt.i_bitrate = fmt.audio.i_channels * fmt.audio.i_rate *
527 fmt.audio.i_bitspersample;
529 msg_Dbg( p_demux, "new audio es %d channels %dHz",
530 fmt.audio.i_channels, fmt.audio.i_rate );
532 p_sys->p_es_audio = es_out_Add( p_demux->out, &fmt );
535 /* Update default_pts to a suitable value for access */
536 var_Create( p_demux, "v4l-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
541 /*****************************************************************************
542 * Close: close device, free resources
543 *****************************************************************************/
544 static void Close( vlc_object_t *p_this )
546 demux_t *p_demux = (demux_t *)p_this;
547 demux_sys_t *p_sys = p_demux->p_sys;
549 if( p_sys->psz_device ) free( p_sys->psz_device );
550 if( p_sys->psz_vdev ) free( p_sys->psz_vdev );
551 if( p_sys->psz_adev ) free( p_sys->psz_adev );
552 if( p_sys->fd_video >= 0 ) close( p_sys->fd_video );
553 if( p_sys->fd_audio >= 0 ) close( p_sys->fd_audio );
554 if( p_sys->p_block_audio ) block_Release( p_sys->p_block_audio );
559 ioctl( p_sys->fd_video, MJPIOC_QBUF_CAPT, &i_noframe );
562 if( p_sys->p_video_mmap && p_sys->p_video_mmap != MAP_FAILED )
565 munmap( p_sys->p_video_mmap, p_sys->mjpeg_buffers.size *
566 p_sys->mjpeg_buffers.count );
568 munmap( p_sys->p_video_mmap, p_sys->vid_mbuf.size );
574 /*****************************************************************************
576 *****************************************************************************/
577 static int Control( demux_t *p_demux, int i_query, va_list args )
584 /* Special for access_demux */
585 case DEMUX_CAN_PAUSE:
586 case DEMUX_SET_PAUSE_STATE:
587 case DEMUX_CAN_CONTROL_PACE:
588 pb = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
592 case DEMUX_GET_PTS_DELAY:
593 pi64 = (int64_t*)va_arg( args, int64_t * );
594 *pi64 = (int64_t)var_GetInteger( p_demux, "v4l-caching" ) * 1000;
598 pi64 = (int64_t*)va_arg( args, int64_t * );
602 /* TODO implement others */
610 /*****************************************************************************
612 *****************************************************************************/
613 static int Demux( demux_t *p_demux )
615 demux_sys_t *p_sys = p_demux->p_sys;
616 es_out_id_t *p_es = p_sys->p_es_audio;
617 block_t *p_block = NULL;
619 /* Try grabbing audio frames first */
620 if( p_sys->fd_audio < 0 || !( p_block = GrabAudio( p_demux ) ) )
622 /* Try grabbing video frame */
623 p_es = p_sys->p_es_video;
624 if( p_sys->fd_video > 0 ) p_block = GrabVideo( p_demux );
629 /* Sleep so we do not consume all the cpu, 10ms seems
630 * like a good value (100fps) */
635 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_block->i_pts );
636 es_out_Send( p_demux->out, p_es, p_block );
641 /*****************************************************************************
642 * ParseMRL: parse the options contained in the MRL
643 *****************************************************************************/
644 static void ParseMRL( demux_t *p_demux )
646 demux_sys_t *p_sys = p_demux->p_sys;
648 char *psz_dup = strdup( p_demux->psz_path );
649 char *psz_parser = psz_dup;
651 while( *psz_parser && *psz_parser != ':' )
656 if( *psz_parser == ':' )
661 *psz_parser++ = '\0';
662 if( !strncmp( psz_parser, "channel=", strlen( "channel=" ) ) )
664 p_sys->i_channel = strtol( psz_parser + strlen( "channel=" ),
667 else if( !strncmp( psz_parser, "norm=", strlen( "norm=" ) ) )
669 psz_parser += strlen( "norm=" );
670 if( !strncmp( psz_parser, "pal", strlen( "pal" ) ) )
672 p_sys->i_norm = VIDEO_MODE_PAL;
673 psz_parser += strlen( "pal" );
675 else if( !strncmp( psz_parser, "ntsc", strlen( "ntsc" ) ) )
677 p_sys->i_norm = VIDEO_MODE_NTSC;
678 psz_parser += strlen( "ntsc" );
680 else if( !strncmp( psz_parser, "secam", strlen( "secam" ) ) )
682 p_sys->i_norm = VIDEO_MODE_SECAM;
683 psz_parser += strlen( "secam" );
685 else if( !strncmp( psz_parser, "auto", strlen( "auto" ) ) )
687 p_sys->i_norm = VIDEO_MODE_AUTO;
688 psz_parser += strlen( "auto" );
692 p_sys->i_norm = strtol( psz_parser, &psz_parser, 0 );
695 else if( !strncmp( psz_parser, "frequency=",
696 strlen( "frequency=" ) ) )
699 strtol( psz_parser + strlen( "frequency=" ),
701 if( p_sys->i_frequency < 30000 )
703 msg_Warn( p_demux, "v4l syntax has changed : "
704 "'frequency' is now channel frequency in kHz");
707 else if( !strncmp( psz_parser, "audio=", strlen( "audio=" ) ) )
709 p_sys->i_audio = strtol( psz_parser + strlen( "audio=" ),
712 else if( !strncmp( psz_parser, "size=", strlen( "size=" ) ) )
714 psz_parser += strlen( "size=" );
715 if( !strncmp( psz_parser, "subqcif", strlen( "subqcif" ) ) )
717 p_sys->i_width = 128;
718 p_sys->i_height = 96;
720 else if( !strncmp( psz_parser, "qsif", strlen( "qsif" ) ) )
722 p_sys->i_width = 160;
723 p_sys->i_height = 120;
725 else if( !strncmp( psz_parser, "qcif", strlen( "qcif" ) ) )
727 p_sys->i_width = 176;
728 p_sys->i_height = 144;
730 else if( !strncmp( psz_parser, "sif", strlen( "sif" ) ) )
732 p_sys->i_width = 320;
733 p_sys->i_height = 244;
735 else if( !strncmp( psz_parser, "cif", strlen( "cif" ) ) )
737 p_sys->i_width = 352;
738 p_sys->i_height = 288;
740 else if( !strncmp( psz_parser, "vga", strlen( "vga" ) ) )
742 p_sys->i_width = 640;
743 p_sys->i_height = 480;
748 p_sys->i_width = strtol( psz_parser, &psz_parser, 0 );
749 if( *psz_parser == 'x' || *psz_parser == 'X')
751 p_sys->i_height = strtol( psz_parser + 1,
754 msg_Dbg( p_demux, "WxH %dx%d", p_sys->i_width,
758 else if( !strncmp( psz_parser, "brightness=", strlen( "brightness=" ) ) )
760 p_sys->i_brightness = strtol( psz_parser + strlen( "brightness=" ),
763 else if( !strncmp( psz_parser, "colour=", strlen( "colour=" ) ) )
765 p_sys->i_colour = strtol( psz_parser + strlen( "colour=" ),
768 else if( !strncmp( psz_parser, "hue=", strlen( "hue=" ) ) )
770 p_sys->i_hue = strtol( psz_parser + strlen( "hue=" ),
773 else if( !strncmp( psz_parser, "contrast=", strlen( "contrast=" ) ) )
775 p_sys->i_contrast = strtol( psz_parser + strlen( "contrast=" ),
778 else if( !strncmp( psz_parser, "tuner=", strlen( "tuner=" ) ) )
780 p_sys->i_tuner = strtol( psz_parser + strlen( "tuner=" ),
783 else if( !strncmp( psz_parser, "adev=", strlen( "adev=" ) ) )
787 psz_parser += strlen( "adev=" );
788 if( strchr( psz_parser, ':' ) )
790 i_len = strchr( psz_parser, ':' ) - psz_parser;
794 i_len = strlen( psz_parser );
797 p_sys->psz_adev = strndup( psz_parser, i_len );
801 else if( !strncmp( psz_parser, "samplerate=",
802 strlen( "samplerate=" ) ) )
804 p_sys->i_sample_rate =
805 strtol( psz_parser + strlen( "samplerate=" ),
808 else if( !strncmp( psz_parser, "stereo", strlen( "stereo" ) ) )
810 psz_parser += strlen( "stereo" );
812 p_sys->b_stereo = VLC_TRUE;
814 else if( !strncmp( psz_parser, "mono", strlen( "mono" ) ) )
816 psz_parser += strlen( "mono" );
818 p_sys->b_stereo = VLC_FALSE;
820 else if( !strncmp( psz_parser, "mjpeg", strlen( "mjpeg" ) ) )
822 psz_parser += strlen( "mjpeg" );
824 p_sys->b_mjpeg = VLC_TRUE;
826 else if( !strncmp( psz_parser, "decimation=",
827 strlen( "decimation=" ) ) )
829 p_sys->i_decimation =
830 strtol( psz_parser + strlen( "decimation=" ),
833 else if( !strncmp( psz_parser, "quality=",
834 strlen( "quality=" ) ) )
837 strtol( psz_parser + strlen( "quality=" ),
840 else if( !strncmp( psz_parser, "fps=", strlen( "fps=" ) ) )
842 p_sys->f_fps = strtof( psz_parser + strlen( "fps=" ),
847 msg_Warn( p_demux, "unknown option" );
850 while( *psz_parser && *psz_parser != ':' )
855 if( *psz_parser == '\0' )
864 p_sys->psz_device = strdup( psz_dup );
866 if( psz_dup ) free( psz_dup );
869 /*****************************************************************************
871 *****************************************************************************/
872 static int OpenVideoDev( demux_t *p_demux, char *psz_device )
874 demux_sys_t *p_sys = p_demux->p_sys;
877 struct video_channel vid_channel;
878 struct mjpeg_params mjpeg;
881 if( ( i_fd = open( psz_device, O_RDWR ) ) < 0 )
883 msg_Err( p_demux, "cannot open device (%s)", strerror( errno ) );
887 if( ioctl( i_fd, VIDIOCGCAP, &p_sys->vid_cap ) < 0 )
889 msg_Err( p_demux, "cannot get capabilities (%s)", strerror( errno ) );
894 "V4L device %s %d channels %d audios %d < w < %d %d < h < %d",
896 p_sys->vid_cap.channels,
897 p_sys->vid_cap.audios,
898 p_sys->vid_cap.minwidth, p_sys->vid_cap.maxwidth,
899 p_sys->vid_cap.minheight, p_sys->vid_cap.maxheight );
901 if( p_sys->i_channel < 0 || p_sys->i_channel >= p_sys->vid_cap.channels )
903 msg_Dbg( p_demux, "invalid channel, falling back on channel 0" );
904 p_sys->i_channel = 0;
906 if( p_sys->vid_cap.audios && p_sys->i_audio >= p_sys->vid_cap.audios )
908 msg_Dbg( p_demux, "invalid audio, falling back with no audio" );
912 if( p_sys->i_width < p_sys->vid_cap.minwidth ||
913 p_sys->i_width > p_sys->vid_cap.maxwidth )
915 msg_Dbg( p_demux, "invalid width %i", p_sys->i_width );
918 if( p_sys->i_height < p_sys->vid_cap.minheight ||
919 p_sys->i_height > p_sys->vid_cap.maxheight )
921 msg_Dbg( p_demux, "invalid height %i", p_sys->i_height );
925 if( !( p_sys->vid_cap.type & VID_TYPE_CAPTURE ) )
927 msg_Err( p_demux, "cannot grab" );
931 vid_channel.channel = p_sys->i_channel;
932 if( ioctl( i_fd, VIDIOCGCHAN, &vid_channel ) < 0 )
934 msg_Err( p_demux, "cannot get channel infos (%s)",
939 "setting channel %s(%d) %d tuners flags=0x%x type=0x%x norm=0x%x",
940 vid_channel.name, vid_channel.channel, vid_channel.tuners,
941 vid_channel.flags, vid_channel.type, vid_channel.norm );
943 if( p_sys->i_tuner >= vid_channel.tuners )
945 msg_Dbg( p_demux, "invalid tuner, falling back on tuner 0" );
949 vid_channel.norm = p_sys->i_norm;
950 if( ioctl( i_fd, VIDIOCSCHAN, &vid_channel ) < 0 )
952 msg_Err( p_demux, "cannot set channel (%s)", strerror( errno ) );
956 if( vid_channel.flags & VIDEO_VC_TUNER )
961 struct video_tuner vid_tuner;
962 if( p_sys->i_tuner >= 0 )
964 vid_tuner.tuner = p_sys->i_tuner;
965 if( ioctl( i_fd, VIDIOCGTUNER, &vid_tuner ) < 0 )
967 msg_Err( p_demux, "cannot get tuner (%s)", strerror( errno ) );
970 msg_Dbg( p_demux, "tuner %s low=%d high=%d, flags=0x%x "
971 "mode=0x%x signal=0x%x",
972 vid_tuner.name, vid_tuner.rangelow, vid_tuner.rangehigh,
973 vid_tuner.flags, vid_tuner.mode, vid_tuner.signal );
975 msg_Dbg( p_demux, "setting tuner %s (%d)",
976 vid_tuner.name, vid_tuner.tuner );
978 /* FIXME FIXME to be checked FIXME FIXME */
979 //vid_tuner.mode = p_sys->i_norm;
980 if( ioctl( i_fd, VIDIOCSTUNER, &vid_tuner ) < 0 )
982 msg_Err( p_demux, "cannot set tuner (%s)", strerror( errno ) );
988 /* Show a warning if frequency is < than 30000.
989 * User is certainly usint old syntax. */
993 if( p_sys->i_frequency >= 0 )
995 int driver_frequency = p_sys->i_frequency * 16 /1000;
996 if( ioctl( i_fd, VIDIOCSFREQ, &driver_frequency ) < 0 )
998 msg_Err( p_demux, "cannot set frequency (%s)",
1002 msg_Dbg( p_demux, "frequency %d (%d)", p_sys->i_frequency,
1008 if( vid_channel.flags & VIDEO_VC_AUDIO )
1010 struct video_audio vid_audio;
1012 /* XXX TODO volume, balance, ... */
1013 if( p_sys->i_audio >= 0 )
1015 vid_audio.audio = p_sys->i_audio;
1016 if( ioctl( i_fd, VIDIOCGAUDIO, &vid_audio ) < 0 )
1018 msg_Err( p_demux, "cannot get audio (%s)", strerror( errno ) );
1023 vid_audio.flags &= ~VIDEO_AUDIO_MUTE;
1025 if( ioctl( i_fd, VIDIOCSAUDIO, &vid_audio ) < 0 )
1027 msg_Err( p_demux, "cannot set audio (%s)", strerror( errno ) );
1034 /* establish basic params with input and norm before feeling width
1036 if( p_sys->b_mjpeg )
1038 struct quicktime_mjpeg_app1 *p_app1;
1041 if( ioctl( i_fd, MJPIOC_G_PARAMS, &mjpeg ) < 0 )
1043 msg_Err( p_demux, "cannot get mjpeg params (%s)",
1044 strerror( errno ) );
1047 mjpeg.input = p_sys->i_channel;
1048 mjpeg.norm = p_sys->i_norm;
1049 mjpeg.decimation = p_sys->i_decimation;
1051 if( p_sys->i_width )
1052 mjpeg.img_width = p_sys->i_width / p_sys->i_decimation;
1053 if( p_sys->i_height )
1054 mjpeg.img_height = p_sys->i_height / p_sys->i_decimation;
1056 /* establish Quicktime APP1 marker while we are here */
1061 p_app1 = (struct quicktime_mjpeg_app1 *)mjpeg.APP_data;
1062 p_app1->i_reserved = 0;
1063 p_app1->i_tag = VLC_FOURCC( 'm','j','p','g' );
1064 p_app1->i_field_size = 0;
1065 p_app1->i_padded_field_size = 0;
1066 p_app1->i_next_field = 0;
1067 /* XXX WARNING XXX */
1068 /* these's nothing magic about these values. We are dangerously
1069 * assuming the encoder card is encoding mjpeg-a and is not throwing
1070 * in marker tags we aren't expecting. It's bad enough we have to
1071 * search through the jpeg output for every frame we grab just to
1072 * find the first field's end marker, so we take this risk to boost
1074 * This is really something the driver could do for us because this
1075 * does conform to standards outside of Apple Quicktime.
1078 p_app1->i_DQT_offset = hton32( i_offset );
1080 p_app1->i_DHT_offset = hton32( i_offset );
1082 p_app1->i_SOF_offset = hton32( i_offset );
1084 p_app1->i_SOS_offset = hton32( i_offset );
1086 p_app1->i_data_offset = hton32( i_offset );
1088 /* SOF and SOS aren't specified by the mjpeg API because they aren't
1089 * optional. They will be present in the output. */
1090 mjpeg.jpeg_markers = JPEG_MARKER_DHT | JPEG_MARKER_DQT;
1092 if( ioctl( i_fd, MJPIOC_S_PARAMS, &mjpeg ) < 0 )
1094 msg_Err( p_demux, "cannot set mjpeg params (%s)",
1095 strerror( errno ) );
1099 p_sys->i_width = mjpeg.img_width * mjpeg.HorDcm;
1100 p_sys->i_height = mjpeg.img_height * mjpeg.VerDcm *
1101 mjpeg.field_per_buff;
1104 /* fix width/height */
1105 if( !p_sys->b_mjpeg && ( p_sys->i_width == 0 || p_sys->i_height == 0 ) )
1107 struct video_window vid_win;
1109 if( ioctl( i_fd, VIDIOCGWIN, &vid_win ) < 0 )
1111 msg_Err( p_demux, "cannot get win (%s)", strerror( errno ) );
1114 p_sys->i_width = vid_win.width;
1115 p_sys->i_height = vid_win.height;
1117 if( !p_sys->i_width || !p_sys->i_height )
1119 p_sys->i_width = p_sys->vid_cap.maxwidth;
1120 p_sys->i_height = p_sys->vid_cap.maxheight;
1123 if( !p_sys->i_width || !p_sys->i_height )
1125 msg_Err( p_demux, "invalid video size (%ix%i)",
1126 p_sys->i_width, p_sys->i_height );
1130 msg_Dbg( p_demux, "will use %dx%d", p_sys->i_width, p_sys->i_height );
1133 if( !p_sys->b_mjpeg )
1135 /* set hue/color/.. */
1136 if( ioctl( i_fd, VIDIOCGPICT, &p_sys->vid_picture ) == 0 )
1138 struct video_picture vid_picture = p_sys->vid_picture;
1140 if( p_sys->i_brightness >= 0 && p_sys->i_brightness < 65536 )
1142 vid_picture.brightness = p_sys->i_brightness;
1144 if( p_sys->i_colour >= 0 && p_sys->i_colour < 65536 )
1146 vid_picture.colour = p_sys->i_colour;
1148 if( p_sys->i_hue >= 0 && p_sys->i_hue < 65536 )
1150 vid_picture.hue = p_sys->i_hue;
1152 if( p_sys->i_contrast >= 0 && p_sys->i_contrast < 65536 )
1154 vid_picture.contrast = p_sys->i_contrast;
1156 if( ioctl( i_fd, VIDIOCSPICT, &vid_picture ) == 0 )
1158 msg_Dbg( p_demux, "v4l device uses brightness: %d",
1159 vid_picture.brightness );
1160 msg_Dbg( p_demux, "v4l device uses colour: %d",
1161 vid_picture.colour );
1162 msg_Dbg( p_demux, "v4l device uses hue: %d", vid_picture.hue );
1163 msg_Dbg( p_demux, "v4l device uses contrast: %d",
1164 vid_picture.contrast );
1165 p_sys->vid_picture = vid_picture;
1169 /* Find out video format used by device */
1170 if( ioctl( i_fd, VIDIOCGPICT, &p_sys->vid_picture ) == 0 )
1172 struct video_picture vid_picture = p_sys->vid_picture;
1176 vid_picture.palette = 0;
1177 p_sys->i_fourcc = 0;
1179 psz = var_CreateGetString( p_demux, "v4l-chroma" );
1180 if( strlen( psz ) >= 4 )
1182 int i_chroma = VLC_FOURCC( psz[0], psz[1], psz[2], psz[3] );
1184 /* Find out v4l chroma code */
1185 for( i = 0; v4lchroma_to_fourcc[i].i_v4l != 0; i++ )
1187 if( v4lchroma_to_fourcc[i].i_fourcc == i_chroma )
1189 vid_picture.palette = v4lchroma_to_fourcc[i].i_v4l;
1196 if( vid_picture.palette &&
1197 !ioctl( i_fd, VIDIOCSPICT, &vid_picture ) )
1199 p_sys->vid_picture = vid_picture;
1203 /* Try to set the format to something easy to encode */
1204 vid_picture.palette = VIDEO_PALETTE_YUV420P;
1205 if( ioctl( i_fd, VIDIOCSPICT, &vid_picture ) == 0 )
1207 p_sys->vid_picture = vid_picture;
1211 vid_picture.palette = VIDEO_PALETTE_YUV422P;
1212 if( ioctl( i_fd, VIDIOCSPICT, &vid_picture ) == 0 )
1214 p_sys->vid_picture = vid_picture;
1219 /* Find out final format */
1220 for( i = 0; v4lchroma_to_fourcc[i].i_v4l != 0; i++ )
1222 if( v4lchroma_to_fourcc[i].i_v4l == p_sys->vid_picture.palette)
1224 p_sys->i_fourcc = v4lchroma_to_fourcc[i].i_fourcc;
1231 msg_Err( p_demux, "ioctl VIDIOCGPICT failed" );
1236 if( p_sys->b_mjpeg )
1240 p_sys->mjpeg_buffers.count = 8;
1241 p_sys->mjpeg_buffers.size = MJPEG_BUFFER_SIZE;
1243 if( ioctl( i_fd, MJPIOC_REQBUFS, &p_sys->mjpeg_buffers ) < 0 )
1245 msg_Err( p_demux, "mmap unsupported" );
1249 p_sys->p_video_mmap = mmap( 0,
1250 p_sys->mjpeg_buffers.size * p_sys->mjpeg_buffers.count,
1251 PROT_READ | PROT_WRITE, MAP_SHARED, i_fd, 0 );
1252 if( p_sys->p_video_mmap == MAP_FAILED )
1254 msg_Err( p_demux, "mmap failed" );
1258 p_sys->i_fourcc = VLC_FOURCC( 'm','j','p','g' );
1259 p_sys->i_frame_pos = -1;
1261 /* queue up all the frames */
1262 for( i = 0; i < (int)p_sys->mjpeg_buffers.count; i++ )
1264 if( ioctl( i_fd, MJPIOC_QBUF_CAPT, &i ) < 0 )
1266 msg_Err( p_demux, "unable to queue frame" );
1273 /* Fill in picture_t fields */
1274 vout_InitPicture( VLC_OBJECT(p_demux), &p_sys->pic, p_sys->i_fourcc,
1275 p_sys->i_width, p_sys->i_height, p_sys->i_width *
1276 VOUT_ASPECT_FACTOR / p_sys->i_height );
1277 if( !p_sys->pic.i_planes )
1279 msg_Err( p_demux, "unsupported chroma" );
1282 p_sys->i_video_frame_size = 0;
1283 for( i = 0; i < p_sys->pic.i_planes; i++ )
1285 p_sys->i_video_frame_size += p_sys->pic.p[i].i_visible_lines *
1286 p_sys->pic.p[i].i_visible_pitch;
1289 msg_Dbg( p_demux, "v4l device uses frame size: %i",
1290 p_sys->i_video_frame_size );
1291 msg_Dbg( p_demux, "v4l device uses chroma: %4.4s",
1292 (char*)&p_sys->i_fourcc );
1294 /* Allocate mmap buffer */
1295 if( ioctl( i_fd, VIDIOCGMBUF, &p_sys->vid_mbuf ) < 0 )
1297 msg_Err( p_demux, "mmap unsupported" );
1301 p_sys->p_video_mmap = mmap( 0, p_sys->vid_mbuf.size,
1302 PROT_READ|PROT_WRITE, MAP_SHARED,
1304 if( p_sys->p_video_mmap == MAP_FAILED )
1306 /* FIXME -> normal read */
1307 msg_Err( p_demux, "mmap failed" );
1312 p_sys->vid_mmap.frame = 0;
1313 p_sys->vid_mmap.width = p_sys->i_width;
1314 p_sys->vid_mmap.height = p_sys->i_height;
1315 p_sys->vid_mmap.format = p_sys->vid_picture.palette;
1316 if( ioctl( i_fd, VIDIOCMCAPTURE, &p_sys->vid_mmap ) < 0 )
1318 msg_Warn( p_demux, "%4.4s refused", (char*)&p_sys->i_fourcc );
1319 msg_Err( p_demux, "chroma selection failed" );
1327 if( i_fd >= 0 ) close( i_fd );
1331 /*****************************************************************************
1333 *****************************************************************************/
1334 static int OpenAudioDev( demux_t *p_demux, char *psz_device )
1336 demux_sys_t *p_sys = p_demux->p_sys;
1339 if( (i_fd = open( psz_device, O_RDONLY | O_NONBLOCK )) < 0 )
1341 msg_Err( p_demux, "cannot open audio device (%s)", strerror( errno ) );
1345 i_format = AFMT_S16_LE;
1346 if( ioctl( i_fd, SNDCTL_DSP_SETFMT, &i_format ) < 0
1347 || i_format != AFMT_S16_LE )
1349 msg_Err( p_demux, "cannot set audio format (16b little endian) "
1350 "(%s)", strerror( errno ) );
1354 if( ioctl( i_fd, SNDCTL_DSP_STEREO,
1355 &p_sys->b_stereo ) < 0 )
1357 msg_Err( p_demux, "cannot set audio channels count (%s)",
1358 strerror( errno ) );
1362 if( ioctl( i_fd, SNDCTL_DSP_SPEED,
1363 &p_sys->i_sample_rate ) < 0 )
1365 msg_Err( p_demux, "cannot set audio sample rate (%s)",
1366 strerror( errno ) );
1370 msg_Dbg( p_demux, "openened adev=`%s' %s %dHz",
1371 psz_device, p_sys->b_stereo ? "stereo" : "mono",
1372 p_sys->i_sample_rate );
1374 p_sys->i_audio_max_frame_size = 6 * 1024;
1380 if( i_fd >= 0 ) close( i_fd );
1384 /*****************************************************************************
1385 * GrabAudio: grab audio
1386 *****************************************************************************/
1387 static block_t *GrabAudio( demux_t *p_demux )
1389 demux_sys_t *p_sys = p_demux->p_sys;
1390 struct audio_buf_info buf_info;
1391 int i_read, i_correct;
1394 if( p_sys->p_block_audio ) p_block = p_sys->p_block_audio;
1395 else p_block = block_New( p_demux, p_sys->i_audio_max_frame_size );
1399 msg_Warn( p_demux, "cannot get block" );
1403 p_sys->p_block_audio = p_block;
1405 i_read = read( p_sys->fd_audio, p_block->p_buffer,
1406 p_sys->i_audio_max_frame_size );
1408 if( i_read <= 0 ) return 0;
1410 p_block->i_buffer = i_read;
1411 p_sys->p_block_audio = 0;
1413 /* Correct the date because of kernel buffering */
1415 if( ioctl( p_sys->fd_audio, SNDCTL_DSP_GETISPACE, &buf_info ) == 0 )
1417 i_correct += buf_info.bytes;
1420 p_block->i_pts = p_block->i_dts =
1421 mdate() - I64C(1000000) * (mtime_t)i_correct /
1422 2 / ( p_sys->b_stereo ? 2 : 1) / p_sys->i_sample_rate;
1427 /*****************************************************************************
1429 *****************************************************************************/
1430 static uint8_t *GrabCapture( demux_t *p_demux )
1432 demux_sys_t *p_sys = p_demux->p_sys;
1433 int i_captured_frame = p_sys->i_frame_pos;
1435 p_sys->vid_mmap.frame = (p_sys->i_frame_pos + 1) % p_sys->vid_mbuf.frames;
1437 while( ioctl( p_sys->fd_video, VIDIOCMCAPTURE, &p_sys->vid_mmap ) < 0 )
1439 if( errno != EAGAIN )
1441 msg_Err( p_demux, "failed capturing new frame" );
1445 if( p_demux->b_die )
1450 msg_Dbg( p_demux, "grab failed, trying again" );
1453 while( ioctl(p_sys->fd_video, VIDIOCSYNC, &p_sys->i_frame_pos) < 0 )
1455 if( errno != EAGAIN && errno != EINTR )
1457 msg_Err( p_demux, "failed syncing new frame" );
1462 p_sys->i_frame_pos = p_sys->vid_mmap.frame;
1463 /* leave i_video_frame_size alone */
1464 return p_sys->p_video_mmap + p_sys->vid_mbuf.offsets[i_captured_frame];
1467 static uint8_t *GrabMJPEG( demux_t *p_demux )
1469 demux_sys_t *p_sys = p_demux->p_sys;
1470 struct mjpeg_sync sync;
1471 uint8_t *p_frame, *p_field, *p;
1474 struct quicktime_mjpeg_app1 *p_app1 = NULL;
1476 /* re-queue the last frame we sync'd */
1477 if( p_sys->i_frame_pos != -1 )
1479 while( ioctl( p_sys->fd_video, MJPIOC_QBUF_CAPT,
1480 &p_sys->i_frame_pos ) < 0 )
1482 if( errno != EAGAIN && errno != EINTR )
1484 msg_Err( p_demux, "failed capturing new frame" );
1490 /* sync on the next frame */
1491 while( ioctl( p_sys->fd_video, MJPIOC_SYNC, &sync ) < 0 )
1493 if( errno != EAGAIN && errno != EINTR )
1495 msg_Err( p_demux, "failed syncing new frame" );
1500 p_sys->i_frame_pos = sync.frame;
1501 p_frame = p_sys->p_video_mmap + p_sys->mjpeg_buffers.size * sync.frame;
1503 /* p_frame now points to the data. fix up the Quicktime APP1 marker */
1505 tag = hton16( tag );
1509 p = memmem( p_field, sync.length, &tag, 2 );
1513 p += 2; /* data immediately following EOI */
1515 p_app1 = (struct quicktime_mjpeg_app1 *)(p_field + 6);
1517 i_size = ((uint32_t)(p - p_field));
1518 i_size = hton32( i_size );
1519 memcpy( &p_app1->i_field_size, &i_size, 4 );
1521 while( *p == 0xff && *(p+1) == 0xff )
1524 i_size = ((uint32_t)(p - p_field));
1525 i_size = hton32( i_size );
1526 memcpy( &p_app1->i_padded_field_size, &i_size, 4 );
1530 tag = hton16( tag );
1531 p_field = memmem( p, sync.length - (size_t)(p - p_frame), &tag, 2 );
1535 i_size = (uint32_t)(p_field - p_frame);
1536 i_size = hton32( i_size );
1537 memcpy( &p_app1->i_next_field, &i_size, 4 );
1540 p_app1 = (struct quicktime_mjpeg_app1 *)(p_field + 6);
1542 tag = hton16( tag );
1543 p = memmem( p_field, sync.length - (size_t)(p_field - p_frame),
1548 /* sometimes the second field doesn't have the EOI. just put it
1551 p = p_frame + sync.length;
1552 memcpy( p, &tag, 2 );
1557 i_size = (uint32_t)(p - p_field);
1558 i_size = hton32( i_size );
1559 memcpy( &p_app1->i_field_size, &i_size, 4 );
1560 i_size = (uint32_t)(sync.length - (uint32_t)(p_field - p_frame));
1561 i_size = hton32( i_size );
1562 memcpy( &p_app1->i_padded_field_size, &i_size, 4 );
1565 p_sys->i_video_frame_size = sync.length;
1569 static block_t *GrabVideo( demux_t *p_demux )
1571 demux_sys_t *p_sys = p_demux->p_sys;
1575 if( p_sys->f_fps >= 0.1 && p_sys->i_video_pts > 0 )
1577 mtime_t i_dur = (mtime_t)((double)1000000 / (double)p_sys->f_fps);
1579 /* Did we wait long enough ? (frame rate reduction) */
1580 if( p_sys->i_video_pts + i_dur > mdate() ) return 0;
1583 if( p_sys->b_mjpeg ) p_frame = GrabMJPEG( p_demux );
1584 else p_frame = GrabCapture( p_demux );
1586 if( !p_frame ) return 0;
1588 if( !( p_block = block_New( p_demux, p_sys->i_video_frame_size ) ) )
1590 msg_Warn( p_demux, "cannot get block" );
1594 memcpy( p_block->p_buffer, p_frame, p_sys->i_video_frame_size );
1595 p_sys->i_video_pts = p_block->i_pts = p_block->i_dts = mdate();