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 *****************************************************************************/
35 #include <vlc_common.h>
36 #include <vlc_plugin.h>
37 #include <vlc_input.h>
38 #include <vlc_demux.h>
39 #include <vlc_access.h>
42 #include <sys/ioctl.h>
45 #include <arpa/inet.h>
49 /* From GStreamer's v4l plugin:
50 * Because of some really cool feature in video4linux1, also known as
51 * 'not including sys/types.h and sys/time.h', we had to include it
52 * ourselves. In all their intelligence, these people decided to fix
53 * this in the next version (video4linux2) in such a cool way that it
54 * breaks all compilations of old stuff...
55 * The real problem is actually that linux/time.h doesn't use proper
56 * macro checks before defining types like struct timeval. The proper
57 * fix here is to either fuck the kernel header (which is what we do
58 * by defining _LINUX_TIME_H, an innocent little hack) or by fixing it
59 * upstream, which I'll consider doing later on. If you get compiler
60 * errors here, check your linux/time.h && sys/time.h header setup.
64 #include <linux/videodev.h>
65 #include "videodev_mjpeg.h"
67 /*****************************************************************************
69 *****************************************************************************/
70 static int Open ( vlc_object_t * );
71 static void Close( vlc_object_t * );
73 #define CACHING_TEXT N_("Caching value in ms")
74 #define CACHING_LONGTEXT N_( \
75 "Caching value for V4L captures. This " \
76 "value should be set in milliseconds." )
77 #define VDEV_TEXT N_("Video device name")
78 #define VDEV_LONGTEXT N_( \
79 "Name of the video device to use. " \
80 "If you don't specify anything, no video device will be used.")
81 #define CHROMA_TEXT N_("Video input chroma format")
82 #define CHROMA_LONGTEXT N_( \
83 "Force the Video4Linux video device to use a specific chroma format " \
84 "(eg. I420 (default), RV24, etc.)")
85 #define FREQUENCY_TEXT N_( "Frequency" )
86 #define FREQUENCY_LONGTEXT N_( \
87 "Frequency to capture (in kHz), if applicable." )
88 #define CHANNEL_TEXT N_( "Channel" )
89 #define CHANNEL_LONGTEXT N_( \
90 "Channel of the card to use (Usually, 0 = tuner, " \
91 "1 = composite, 2 = svideo)." )
92 #define NORM_TEXT N_( "Norm" )
93 #define NORM_LONGTEXT N_( \
94 "Norm of the stream (Automatic, SECAM, PAL, or NTSC)." )
95 #define AUDIO_TEXT N_( "Audio Channel" )
96 #define AUDIO_LONGTEXT N_( \
97 "Audio Channel to use, if there are several audio inputs." )
98 #define WIDTH_TEXT N_( "Width" )
99 #define WIDTH_LONGTEXT N_( "Width of the stream to capture " \
100 "(-1 for autodetect)." )
101 #define HEIGHT_TEXT N_( "Height" )
102 #define HEIGHT_LONGTEXT N_( "Height of the stream to capture " \
103 "(-1 for autodetect)." )
104 #define BRIGHTNESS_TEXT N_( "Brightness" )
105 #define BRIGHTNESS_LONGTEXT N_( \
106 "Brightness of the video input." )
107 #define HUE_TEXT N_( "Hue" )
108 #define HUE_LONGTEXT N_( \
109 "Hue of the video input." )
110 #define COLOUR_TEXT N_( "Color" )
111 #define COLOUR_LONGTEXT N_( \
112 "Color of the video input." )
113 #define CONTRAST_TEXT N_( "Contrast" )
114 #define CONTRAST_LONGTEXT N_( \
115 "Contrast of the video input." )
116 #define TUNER_TEXT N_( "Tuner" )
117 #define TUNER_LONGTEXT N_( "Tuner to use, if there are several ones." )
118 #define MJPEG_TEXT N_( "MJPEG" )
119 #define MJPEG_LONGTEXT N_( \
120 "Set this option if the capture device outputs MJPEG" )
121 #define DECIMATION_TEXT N_( "Decimation" )
122 #define DECIMATION_LONGTEXT N_( \
123 "Decimation level for MJPEG streams" )
124 #define QUALITY_TEXT N_( "Quality" )
125 #define QUALITY_LONGTEXT N_( "Quality of the stream." )
126 #define FPS_TEXT N_( "Framerate" )
127 #define FPS_LONGTEXT N_( "Framerate to capture, if applicable " \
128 "(-1 for autodetect)." )
130 #define AUDIO_DEPRECATED_ERROR N_( \
131 "Alsa or OSS audio capture in the v4l access is deprecated. " \
132 "please use 'v4l:/""/ :input-slave=alsa:/""/' or " \
133 "'v4l:/""/ :input-slave=oss:/""/' instead." )
135 static const int i_norm_list[] =
136 { VIDEO_MODE_AUTO, VIDEO_MODE_SECAM, VIDEO_MODE_PAL, VIDEO_MODE_NTSC };
137 static const char *const psz_norm_list_text[] =
138 { N_("Automatic"), N_("SECAM"), N_("PAL"), N_("NTSC") };
140 #define V4L_DEFAULT "/dev/video"
143 set_shortname( N_("Video4Linux") )
144 set_description( N_("Video4Linux input") )
145 set_category( CAT_INPUT )
146 set_subcategory( SUBCAT_INPUT_ACCESS )
148 add_integer( "v4l-caching", DEFAULT_PTS_DELAY / 1000, NULL,
149 CACHING_TEXT, CACHING_LONGTEXT, true );
150 add_obsolete_string( "v4l-vdev" );
151 add_obsolete_string( "v4l-adev" );
152 add_string( "v4l-chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
154 add_float( "v4l-fps", -1.0, NULL, FPS_TEXT, FPS_LONGTEXT, true )
155 add_obsolete_integer( "v4l-samplerate" );
156 add_integer( "v4l-channel", 0, NULL, CHANNEL_TEXT, CHANNEL_LONGTEXT,
158 add_integer( "v4l-tuner", -1, NULL, TUNER_TEXT, TUNER_LONGTEXT, true )
159 add_integer( "v4l-norm", VIDEO_MODE_AUTO, NULL, NORM_TEXT, NORM_LONGTEXT,
161 change_integer_list( i_norm_list, psz_norm_list_text, NULL );
162 add_integer( "v4l-frequency", -1, NULL, FREQUENCY_TEXT, FREQUENCY_LONGTEXT,
164 add_integer( "v4l-audio", -1, NULL, AUDIO_TEXT, AUDIO_LONGTEXT, true )
165 add_obsolete_bool( "v4l-stereo" );
166 add_integer( "v4l-width", 0, NULL, WIDTH_TEXT, WIDTH_LONGTEXT, true )
167 add_integer( "v4l-height", 0, NULL, HEIGHT_TEXT, HEIGHT_LONGTEXT,
169 add_integer( "v4l-brightness", -1, NULL, BRIGHTNESS_TEXT,
170 BRIGHTNESS_LONGTEXT, true );
171 add_integer( "v4l-colour", -1, NULL, COLOUR_TEXT, COLOUR_LONGTEXT,
173 add_integer( "v4l-hue", -1, NULL, HUE_TEXT, HUE_LONGTEXT, true )
174 add_integer( "v4l-contrast", -1, NULL, CONTRAST_TEXT, CONTRAST_LONGTEXT,
176 add_bool( "v4l-mjpeg", false, NULL, MJPEG_TEXT, MJPEG_LONGTEXT,
178 add_integer( "v4l-decimation", 1, NULL, DECIMATION_TEXT,
179 DECIMATION_LONGTEXT, true );
180 add_integer( "v4l-quality", 100, NULL, QUALITY_TEXT, QUALITY_LONGTEXT,
183 add_shortcut( "v4l" )
184 set_capability( "access_demux", 10 )
185 set_callbacks( Open, Close )
188 /*****************************************************************************
189 * Access: local prototypes
190 *****************************************************************************/
191 static int Demux ( demux_t * );
192 static int Control( demux_t *, int, va_list );
194 static void ParseMRL ( demux_t * );
195 static int OpenVideoDev( demux_t *, char * );
196 static block_t *GrabVideo( demux_t * );
198 #define MJPEG_BUFFER_SIZE (256*1024)
200 struct quicktime_mjpeg_app1
202 uint32_t i_reserved; /* set to 0 */
203 uint32_t i_tag; /* 'mjpg' */
204 uint32_t i_field_size; /* offset following EOI */
205 uint32_t i_padded_field_size; /* offset following EOI+pad */
206 uint32_t i_next_field; /* offset to next field */
207 uint32_t i_DQT_offset;
208 uint32_t i_DHT_offset;
209 uint32_t i_SOF_offset;
210 uint32_t i_SOS_offset;
211 uint32_t i_data_offset; /* following SOS marker data */
219 } v4lchroma_to_fourcc[] =
221 { VIDEO_PALETTE_GREY, VLC_FOURCC( 'G', 'R', 'E', 'Y' ) },
222 { VIDEO_PALETTE_HI240, VLC_FOURCC( 'I', '2', '4', '0' ) },
223 { VIDEO_PALETTE_RGB565, VLC_FOURCC( 'R', 'V', '1', '6' ) },
224 { VIDEO_PALETTE_RGB555, VLC_FOURCC( 'R', 'V', '1', '5' ) },
225 { VIDEO_PALETTE_RGB24, VLC_FOURCC( 'R', 'V', '2', '4' ) },
226 { VIDEO_PALETTE_RGB32, VLC_FOURCC( 'R', 'V', '3', '2' ) },
227 { VIDEO_PALETTE_YUV422, VLC_FOURCC( 'Y', 'U', 'Y', '2' ) },
228 { VIDEO_PALETTE_YUV422, VLC_FOURCC( 'Y', 'U', 'Y', 'V' ) },
229 { VIDEO_PALETTE_YUYV, VLC_FOURCC( 'Y', 'U', 'Y', '2' ) },
230 { VIDEO_PALETTE_YUYV, VLC_FOURCC( 'Y', 'U', 'Y', 'V' ) },
231 { VIDEO_PALETTE_UYVY, VLC_FOURCC( 'U', 'Y', 'V', 'Y' ) },
232 { VIDEO_PALETTE_YUV420, VLC_FOURCC( 'I', '4', '2', 'N' ) },
233 { VIDEO_PALETTE_YUV411, VLC_FOURCC( 'I', '4', '1', 'N' ) },
234 { VIDEO_PALETTE_RAW, VLC_FOURCC( 'G', 'R', 'A', 'W' ) },
235 { VIDEO_PALETTE_YUV422P, VLC_FOURCC( 'I', '4', '2', '2' ) },
236 { VIDEO_PALETTE_YUV420P, VLC_FOURCC( 'I', '4', '2', '0' ) },
237 { VIDEO_PALETTE_YUV411P, VLC_FOURCC( 'I', '4', '1', '1' ) },
244 char *psz_device; /* Main device from MRL */
247 /* Video properties */
264 float f_fps; /* <= 0.0 mean to grab at full rate */
265 mtime_t i_video_pts; /* only used when f_fps > 0 */
271 struct video_capability vid_cap;
272 struct video_mbuf vid_mbuf;
273 struct mjpeg_requestbuffers mjpeg_buffers;
275 uint8_t *p_video_mmap;
278 struct video_mmap vid_mmap;
279 struct video_picture vid_picture;
281 int i_video_frame_size;
285 /*****************************************************************************
286 * Open: opens v4l device
287 *****************************************************************************
289 * url: <video device>::::
291 *****************************************************************************/
292 static int Open( vlc_object_t *p_this )
294 demux_t *p_demux = (demux_t*)p_this;
298 /* Only when selected */
299 if( *p_demux->psz_access == '\0' )
303 p_demux->pf_demux = Demux;
304 p_demux->pf_control = Control;
305 p_demux->info.i_update = 0;
306 p_demux->info.i_title = 0;
307 p_demux->info.i_seekpoint = 0;
308 p_demux->p_sys = p_sys = calloc( 1, sizeof( demux_sys_t ) );
312 var_Create( p_demux, "v4l-audio", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
313 var_Get( p_demux, "v4l-audio", &val );
314 p_sys->i_audio = val.i_int;
316 var_Create( p_demux, "v4l-channel", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
317 var_Get( p_demux, "v4l-channel", &val );
318 p_sys->i_channel = val.i_int;
320 var_Create( p_demux, "v4l-norm", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
321 var_Get( p_demux, "v4l-norm", &val );
322 p_sys->i_norm = val.i_int;
324 var_Create( p_demux, "v4l-tuner", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
325 var_Get( p_demux, "v4l-tuner", &val );
326 p_sys->i_tuner = val.i_int;
328 var_Create( p_demux, "v4l-frequency",
329 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
330 var_Get( p_demux, "v4l-frequency", &val );
331 p_sys->i_frequency = val.i_int;
333 var_Create( p_demux, "v4l-fps", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
334 var_Get( p_demux, "v4l-fps", &val );
335 p_sys->f_fps = val.f_float;
337 var_Create( p_demux, "v4l-width", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
338 var_Get( p_demux, "v4l-width", &val );
339 p_sys->i_width = val.i_int;
341 var_Create( p_demux, "v4l-height", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
342 var_Get( p_demux, "v4l-height", &val );
343 p_sys->i_height = val.i_int;
345 p_sys->i_video_pts = -1;
347 var_Create( p_demux, "v4l-brightness", VLC_VAR_INTEGER |
349 var_Get( p_demux, "v4l-brightness", &val );
350 p_sys->i_brightness = val.i_int;
352 var_Create( p_demux, "v4l-hue", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
353 var_Get( p_demux, "v4l-hue", &val );
356 var_Create( p_demux, "v4l-colour", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
357 var_Get( p_demux, "v4l-colour", &val );
358 p_sys->i_colour = val.i_int;
360 var_Create( p_demux, "v4l-contrast", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
361 var_Get( p_demux, "v4l-contrast", &val );
362 p_sys->i_contrast = val.i_int;
364 var_Create( p_demux, "v4l-mjpeg", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
365 var_Get( p_demux, "v4l-mjpeg", &val );
366 p_sys->b_mjpeg = val.b_bool;
368 var_Create( p_demux, "v4l-decimation", VLC_VAR_INTEGER |
370 var_Get( p_demux, "v4l-decimation", &val );
371 p_sys->i_decimation = val.i_int;
373 var_Create( p_demux, "v4l-quality", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
374 var_Get( p_demux, "v4l-quality", &val );
375 p_sys->i_quality = val.i_int;
377 p_sys->psz_device = NULL;
384 msg_Dbg( p_this, "opening device '%s'", p_sys->psz_device );
385 p_sys->i_fd = OpenVideoDev( p_demux, p_sys->psz_device );
386 if( p_sys->i_fd < 0 )
393 msg_Dbg( p_demux, "v4l grabbing started" );
395 /* Declare elementary streams */
397 es_format_Init( &fmt, VIDEO_ES, p_sys->i_fourcc );
398 fmt.video.i_width = p_sys->i_width;
399 fmt.video.i_height = p_sys->i_height;
400 fmt.video.i_aspect = 4 * VOUT_ASPECT_FACTOR / 3;
402 /* Setup rgb mask for RGB formats */
403 switch( p_sys->i_fourcc )
405 case VLC_FOURCC('R','V','1','5'):
406 fmt.video.i_rmask = 0x001f;
407 fmt.video.i_gmask = 0x03e0;
408 fmt.video.i_bmask = 0x7c00;
410 case VLC_FOURCC('R','V','1','6'):
411 fmt.video.i_rmask = 0x001f;
412 fmt.video.i_gmask = 0x07e0;
413 fmt.video.i_bmask = 0xf800;
415 case VLC_FOURCC('R','V','2','4'):
416 case VLC_FOURCC('R','V','3','2'):
417 fmt.video.i_rmask = 0x00ff0000;
418 fmt.video.i_gmask = 0x0000ff00;
419 fmt.video.i_bmask = 0x000000ff;
423 msg_Dbg( p_demux, "added new video es %4.4s %dx%d",
424 (char*)&fmt.i_codec, fmt.video.i_width, fmt.video.i_height );
425 p_sys->p_es = es_out_Add( p_demux->out, &fmt );
427 /* Update default_pts to a suitable value for access */
428 var_Create( p_demux, "v4l-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
433 /*****************************************************************************
434 * Close: close device, free resources
435 *****************************************************************************/
436 static void Close( vlc_object_t *p_this )
438 demux_t *p_demux = (demux_t *)p_this;
439 demux_sys_t *p_sys = p_demux->p_sys;
441 free( p_sys->psz_device );
442 if( p_sys->i_fd >= 0 ) close( p_sys->i_fd );
447 ioctl( p_sys->i_fd, MJPIOC_QBUF_CAPT, &i_noframe );
450 if( p_sys->p_video_mmap && p_sys->p_video_mmap != MAP_FAILED )
453 munmap( p_sys->p_video_mmap, p_sys->mjpeg_buffers.size *
454 p_sys->mjpeg_buffers.count );
456 munmap( p_sys->p_video_mmap, p_sys->vid_mbuf.size );
462 /*****************************************************************************
464 *****************************************************************************/
465 static int Control( demux_t *p_demux, int i_query, va_list args )
472 /* Special for access_demux */
473 case DEMUX_CAN_PAUSE:
475 case DEMUX_SET_PAUSE_STATE:
476 case DEMUX_CAN_CONTROL_PACE:
477 pb = (bool*)va_arg( args, bool * );
481 case DEMUX_GET_PTS_DELAY:
482 pi64 = (int64_t*)va_arg( args, int64_t * );
483 *pi64 = (int64_t)var_GetInteger( p_demux, "v4l-caching" ) * 1000;
487 pi64 = (int64_t*)va_arg( args, int64_t * );
491 /* TODO implement others */
499 /*****************************************************************************
501 *****************************************************************************/
502 static int Demux( demux_t *p_demux )
504 demux_sys_t *p_sys = p_demux->p_sys;
508 fd.events = POLLIN|POLLPRI;
512 if( poll( &fd, 1, 500 ) )
514 if( fd.revents & (POLLIN|POLLPRI) )
516 block_t *p_block = GrabVideo( p_demux );
519 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_block->i_pts );
520 es_out_Send( p_demux->out, p_sys->p_es, p_block );
528 /*****************************************************************************
529 * ParseMRL: parse the options contained in the MRL
530 *****************************************************************************/
531 static void ParseMRL( demux_t *p_demux )
533 demux_sys_t *p_sys = p_demux->p_sys;
535 char *psz_dup = strdup( p_demux->psz_path );
536 char *psz_parser = psz_dup;
538 while( *psz_parser && *psz_parser != ':' )
543 if( *psz_parser == ':' )
548 *psz_parser++ = '\0';
549 if( !strncmp( psz_parser, "channel=", strlen( "channel=" ) ) )
551 p_sys->i_channel = strtol( psz_parser + strlen( "channel=" ),
554 else if( !strncmp( psz_parser, "norm=", strlen( "norm=" ) ) )
556 psz_parser += strlen( "norm=" );
557 if( !strncmp( psz_parser, "pal", strlen( "pal" ) ) )
559 p_sys->i_norm = VIDEO_MODE_PAL;
560 psz_parser += strlen( "pal" );
562 else if( !strncmp( psz_parser, "ntsc", strlen( "ntsc" ) ) )
564 p_sys->i_norm = VIDEO_MODE_NTSC;
565 psz_parser += strlen( "ntsc" );
567 else if( !strncmp( psz_parser, "secam", strlen( "secam" ) ) )
569 p_sys->i_norm = VIDEO_MODE_SECAM;
570 psz_parser += strlen( "secam" );
572 else if( !strncmp( psz_parser, "auto", strlen( "auto" ) ) )
574 p_sys->i_norm = VIDEO_MODE_AUTO;
575 psz_parser += strlen( "auto" );
579 p_sys->i_norm = strtol( psz_parser, &psz_parser, 0 );
582 else if( !strncmp( psz_parser, "frequency=",
583 strlen( "frequency=" ) ) )
586 strtol( psz_parser + strlen( "frequency=" ),
588 if( p_sys->i_frequency < 30000 )
590 msg_Warn( p_demux, "v4l syntax has changed : "
591 "'frequency' is now channel frequency in kHz");
594 else if( !strncmp( psz_parser, "audio=", strlen( "audio=" ) ) )
596 p_sys->i_audio = strtol( psz_parser + strlen( "audio=" ),
599 else if( !strncmp( psz_parser, "size=", strlen( "size=" ) ) )
601 psz_parser += strlen( "size=" );
602 if( !strncmp( psz_parser, "subqcif", strlen( "subqcif" ) ) )
604 p_sys->i_width = 128;
605 p_sys->i_height = 96;
607 else if( !strncmp( psz_parser, "qsif", strlen( "qsif" ) ) )
609 p_sys->i_width = 160;
610 p_sys->i_height = 120;
612 else if( !strncmp( psz_parser, "qcif", strlen( "qcif" ) ) )
614 p_sys->i_width = 176;
615 p_sys->i_height = 144;
617 else if( !strncmp( psz_parser, "sif", strlen( "sif" ) ) )
619 p_sys->i_width = 320;
620 p_sys->i_height = 244;
622 else if( !strncmp( psz_parser, "cif", strlen( "cif" ) ) )
624 p_sys->i_width = 352;
625 p_sys->i_height = 288;
627 else if( !strncmp( psz_parser, "vga", strlen( "vga" ) ) )
629 p_sys->i_width = 640;
630 p_sys->i_height = 480;
635 p_sys->i_width = strtol( psz_parser, &psz_parser, 0 );
636 if( *psz_parser == 'x' || *psz_parser == 'X')
638 p_sys->i_height = strtol( psz_parser + 1,
641 msg_Dbg( p_demux, "WxH %dx%d", p_sys->i_width,
645 else if( !strncmp( psz_parser, "brightness=", strlen( "brightness=" ) ) )
647 p_sys->i_brightness = strtol( psz_parser + strlen( "brightness=" ),
650 else if( !strncmp( psz_parser, "colour=", strlen( "colour=" ) ) )
652 p_sys->i_colour = strtol( psz_parser + strlen( "colour=" ),
655 else if( !strncmp( psz_parser, "hue=", strlen( "hue=" ) ) )
657 p_sys->i_hue = strtol( psz_parser + strlen( "hue=" ),
660 else if( !strncmp( psz_parser, "contrast=", strlen( "contrast=" ) ) )
662 p_sys->i_contrast = strtol( psz_parser + strlen( "contrast=" ),
665 else if( !strncmp( psz_parser, "tuner=", strlen( "tuner=" ) ) )
667 p_sys->i_tuner = strtol( psz_parser + strlen( "tuner=" ),
670 else if( !strncmp( psz_parser, "mjpeg", strlen( "mjpeg" ) ) )
672 psz_parser += strlen( "mjpeg" );
674 p_sys->b_mjpeg = true;
676 else if( !strncmp( psz_parser, "decimation=",
677 strlen( "decimation=" ) ) )
679 p_sys->i_decimation =
680 strtol( psz_parser + strlen( "decimation=" ),
683 else if( !strncmp( psz_parser, "quality=",
684 strlen( "quality=" ) ) )
687 strtol( psz_parser + strlen( "quality=" ),
690 else if( !strncmp( psz_parser, "fps=", strlen( "fps=" ) ) )
692 p_sys->f_fps = strtof( psz_parser + strlen( "fps=" ),
695 else if( !strncmp( psz_parser, "adev=", strlen( "adev=" ) )
696 || !strncmp( psz_parser, "samplerate=", strlen( "samplerate=" ) )
697 || !strncmp( psz_parser, "stereo", strlen( "stereo" ) )
698 || !strncmp( psz_parser, "mono", strlen( "mono" ) ) )
700 if( strchr( psz_parser, ':' ) )
701 psz_parser = strchr( psz_parser, ':' );
703 psz_parser += strlen( psz_parser );
704 msg_Err( p_demux, AUDIO_DEPRECATED_ERROR );
708 msg_Warn( p_demux, "unknown option" );
711 while( *psz_parser && *psz_parser != ':' )
716 if( *psz_parser == '\0' )
724 p_sys->psz_device = strdup( psz_dup );
726 p_sys->psz_device = strdup( V4L_DEFAULT );
730 /*****************************************************************************
732 *****************************************************************************/
733 static int OpenVideoDev( demux_t *p_demux, char *psz_device )
735 demux_sys_t *p_sys = p_demux->p_sys;
738 struct video_channel vid_channel;
739 struct mjpeg_params mjpeg;
742 if( ( i_fd = open( psz_device, O_RDWR ) ) < 0 )
744 msg_Err( p_demux, "cannot open device (%m)" );
748 if( ioctl( i_fd, VIDIOCGCAP, &p_sys->vid_cap ) < 0 )
750 msg_Err( p_demux, "cannot get capabilities (%m)" );
755 "V4L device %s %d channels %d audios %d < w < %d %d < h < %d",
757 p_sys->vid_cap.channels,
758 p_sys->vid_cap.audios,
759 p_sys->vid_cap.minwidth, p_sys->vid_cap.maxwidth,
760 p_sys->vid_cap.minheight, p_sys->vid_cap.maxheight );
762 if( p_sys->i_channel < 0 || p_sys->i_channel >= p_sys->vid_cap.channels )
764 msg_Dbg( p_demux, "invalid channel, falling back on channel 0" );
765 p_sys->i_channel = 0;
767 if( p_sys->vid_cap.audios && p_sys->i_audio >= p_sys->vid_cap.audios )
769 msg_Dbg( p_demux, "invalid audio, falling back with no audio" );
773 if( p_sys->i_width < p_sys->vid_cap.minwidth ||
774 p_sys->i_width > p_sys->vid_cap.maxwidth )
776 msg_Dbg( p_demux, "invalid width %i", p_sys->i_width );
779 if( p_sys->i_height < p_sys->vid_cap.minheight ||
780 p_sys->i_height > p_sys->vid_cap.maxheight )
782 msg_Dbg( p_demux, "invalid height %i", p_sys->i_height );
786 if( !( p_sys->vid_cap.type & VID_TYPE_CAPTURE ) )
788 msg_Err( p_demux, "cannot grab" );
792 vid_channel.channel = p_sys->i_channel;
793 if( ioctl( i_fd, VIDIOCGCHAN, &vid_channel ) < 0 )
795 msg_Err( p_demux, "cannot get channel infos (%m)" );
799 "setting channel %s(%d) %d tuners flags=0x%x type=0x%x norm=0x%x",
800 vid_channel.name, vid_channel.channel, vid_channel.tuners,
801 vid_channel.flags, vid_channel.type, vid_channel.norm );
803 if( p_sys->i_tuner >= vid_channel.tuners )
805 msg_Dbg( p_demux, "invalid tuner, falling back on tuner 0" );
809 vid_channel.norm = p_sys->i_norm;
810 if( ioctl( i_fd, VIDIOCSCHAN, &vid_channel ) < 0 )
812 msg_Err( p_demux, "cannot set channel (%m)" );
816 if( vid_channel.flags & VIDEO_VC_TUNER )
821 struct video_tuner vid_tuner;
822 if( p_sys->i_tuner >= 0 )
824 vid_tuner.tuner = p_sys->i_tuner;
825 if( ioctl( i_fd, VIDIOCGTUNER, &vid_tuner ) < 0 )
827 msg_Err( p_demux, "cannot get tuner (%m)" );
830 msg_Dbg( p_demux, "tuner %s low=%d high=%d, flags=0x%x "
831 "mode=0x%x signal=0x%x",
832 vid_tuner.name, vid_tuner.rangelow, vid_tuner.rangehigh,
833 vid_tuner.flags, vid_tuner.mode, vid_tuner.signal );
835 msg_Dbg( p_demux, "setting tuner %s (%d)",
836 vid_tuner.name, vid_tuner.tuner );
838 /* FIXME FIXME to be checked FIXME FIXME */
839 //vid_tuner.mode = p_sys->i_norm;
840 if( ioctl( i_fd, VIDIOCSTUNER, &vid_tuner ) < 0 )
842 msg_Err( p_demux, "cannot set tuner (%m)" );
848 /* Show a warning if frequency is < than 30000.
849 * User is certainly usint old syntax. */
853 if( p_sys->i_frequency >= 0 )
855 int driver_frequency = p_sys->i_frequency * 16 /1000;
856 if( ioctl( i_fd, VIDIOCSFREQ, &driver_frequency ) < 0 )
858 msg_Err( p_demux, "cannot set frequency (%m)" );
861 msg_Dbg( p_demux, "frequency %d (%d)", p_sys->i_frequency,
867 if( vid_channel.flags & VIDEO_VC_AUDIO )
869 struct video_audio vid_audio;
871 /* XXX TODO volume, balance, ... */
872 if( p_sys->i_audio >= 0 )
874 vid_audio.audio = p_sys->i_audio;
875 if( ioctl( i_fd, VIDIOCGAUDIO, &vid_audio ) < 0 )
877 msg_Err( p_demux, "cannot get audio (%m)" );
882 vid_audio.flags &= ~VIDEO_AUDIO_MUTE;
884 if( ioctl( i_fd, VIDIOCSAUDIO, &vid_audio ) < 0 )
886 msg_Err( p_demux, "cannot set audio (%m)" );
893 /* establish basic params with input and norm before feeling width
897 struct quicktime_mjpeg_app1 *p_app1;
900 if( ioctl( i_fd, MJPIOC_G_PARAMS, &mjpeg ) < 0 )
902 msg_Err( p_demux, "cannot get mjpeg params (%m)" );
905 mjpeg.input = p_sys->i_channel;
906 mjpeg.norm = p_sys->i_norm;
907 mjpeg.decimation = p_sys->i_decimation;
910 mjpeg.img_width = p_sys->i_width / p_sys->i_decimation;
911 if( p_sys->i_height )
912 mjpeg.img_height = p_sys->i_height / p_sys->i_decimation;
914 /* establish Quicktime APP1 marker while we are here */
919 p_app1 = (struct quicktime_mjpeg_app1 *)mjpeg.APP_data;
920 p_app1->i_reserved = 0;
921 p_app1->i_tag = VLC_FOURCC( 'm','j','p','g' );
922 p_app1->i_field_size = 0;
923 p_app1->i_padded_field_size = 0;
924 p_app1->i_next_field = 0;
925 /* XXX WARNING XXX */
926 /* these's nothing magic about these values. We are dangerously
927 * assuming the encoder card is encoding mjpeg-a and is not throwing
928 * in marker tags we aren't expecting. It's bad enough we have to
929 * search through the jpeg output for every frame we grab just to
930 * find the first field's end marker, so we take this risk to boost
932 * This is really something the driver could do for us because this
933 * does conform to standards outside of Apple Quicktime.
936 p_app1->i_DQT_offset = hton32( i_offset );
938 p_app1->i_DHT_offset = hton32( i_offset );
940 p_app1->i_SOF_offset = hton32( i_offset );
942 p_app1->i_SOS_offset = hton32( i_offset );
944 p_app1->i_data_offset = hton32( i_offset );
946 /* SOF and SOS aren't specified by the mjpeg API because they aren't
947 * optional. They will be present in the output. */
948 mjpeg.jpeg_markers = JPEG_MARKER_DHT | JPEG_MARKER_DQT;
950 if( ioctl( i_fd, MJPIOC_S_PARAMS, &mjpeg ) < 0 )
952 msg_Err( p_demux, "cannot set mjpeg params (%m)" );
956 p_sys->i_width = mjpeg.img_width * mjpeg.HorDcm;
957 p_sys->i_height = mjpeg.img_height * mjpeg.VerDcm *
958 mjpeg.field_per_buff;
961 /* fix width/height */
962 if( !p_sys->b_mjpeg && ( p_sys->i_width == 0 || p_sys->i_height == 0 ) )
964 struct video_window vid_win;
966 if( ioctl( i_fd, VIDIOCGWIN, &vid_win ) < 0 )
968 msg_Err( p_demux, "cannot get win (%m)" );
971 p_sys->i_width = vid_win.width;
972 p_sys->i_height = vid_win.height;
974 if( !p_sys->i_width || !p_sys->i_height )
976 p_sys->i_width = p_sys->vid_cap.maxwidth;
977 p_sys->i_height = p_sys->vid_cap.maxheight;
980 if( !p_sys->i_width || !p_sys->i_height )
982 msg_Err( p_demux, "invalid video size (%ix%i)",
983 p_sys->i_width, p_sys->i_height );
987 msg_Dbg( p_demux, "will use %dx%d", p_sys->i_width, p_sys->i_height );
990 if( !p_sys->b_mjpeg )
992 /* set hue/color/.. */
993 if( ioctl( i_fd, VIDIOCGPICT, &p_sys->vid_picture ) == 0 )
995 struct video_picture vid_picture = p_sys->vid_picture;
997 if( p_sys->i_brightness >= 0 && p_sys->i_brightness < 65536 )
999 vid_picture.brightness = p_sys->i_brightness;
1001 if( p_sys->i_colour >= 0 && p_sys->i_colour < 65536 )
1003 vid_picture.colour = p_sys->i_colour;
1005 if( p_sys->i_hue >= 0 && p_sys->i_hue < 65536 )
1007 vid_picture.hue = p_sys->i_hue;
1009 if( p_sys->i_contrast >= 0 && p_sys->i_contrast < 65536 )
1011 vid_picture.contrast = p_sys->i_contrast;
1013 if( ioctl( i_fd, VIDIOCSPICT, &vid_picture ) == 0 )
1015 msg_Dbg( p_demux, "v4l device uses brightness: %d",
1016 vid_picture.brightness );
1017 msg_Dbg( p_demux, "v4l device uses colour: %d",
1018 vid_picture.colour );
1019 msg_Dbg( p_demux, "v4l device uses hue: %d", vid_picture.hue );
1020 msg_Dbg( p_demux, "v4l device uses contrast: %d",
1021 vid_picture.contrast );
1022 p_sys->vid_picture = vid_picture;
1026 /* Find out video format used by device */
1027 if( ioctl( i_fd, VIDIOCGPICT, &p_sys->vid_picture ) == 0 )
1029 struct video_picture vid_picture = p_sys->vid_picture;
1033 p_sys->i_fourcc = 0;
1035 psz = var_CreateGetString( p_demux, "v4l-chroma" );
1036 if( strlen( psz ) >= 4 )
1038 vid_picture.palette = 0;
1039 int i_chroma = VLC_FOURCC( psz[0], psz[1], psz[2], psz[3] );
1041 /* Find out v4l chroma code */
1042 for( i = 0; v4lchroma_to_fourcc[i].i_v4l != 0; i++ )
1044 if( v4lchroma_to_fourcc[i].i_fourcc == i_chroma )
1046 vid_picture.palette = v4lchroma_to_fourcc[i].i_v4l;
1053 if( vid_picture.palette &&
1054 !ioctl( i_fd, VIDIOCSPICT, &vid_picture ) )
1056 p_sys->vid_picture = vid_picture;
1060 /* Try to set the format to something easy to encode */
1061 vid_picture.palette = VIDEO_PALETTE_YUV420P;
1062 if( ioctl( i_fd, VIDIOCSPICT, &vid_picture ) == 0 )
1064 p_sys->vid_picture = vid_picture;
1068 vid_picture.palette = VIDEO_PALETTE_YUV422P;
1069 if( ioctl( i_fd, VIDIOCSPICT, &vid_picture ) == 0 )
1071 p_sys->vid_picture = vid_picture;
1076 /* Find out final format */
1077 for( i = 0; v4lchroma_to_fourcc[i].i_v4l != 0; i++ )
1079 if( v4lchroma_to_fourcc[i].i_v4l == p_sys->vid_picture.palette)
1081 p_sys->i_fourcc = v4lchroma_to_fourcc[i].i_fourcc;
1088 msg_Err( p_demux, "ioctl VIDIOCGPICT failed" );
1093 if( p_sys->b_mjpeg )
1097 p_sys->mjpeg_buffers.count = 8;
1098 p_sys->mjpeg_buffers.size = MJPEG_BUFFER_SIZE;
1100 if( ioctl( i_fd, MJPIOC_REQBUFS, &p_sys->mjpeg_buffers ) < 0 )
1102 msg_Err( p_demux, "mmap unsupported" );
1106 p_sys->p_video_mmap = mmap( 0,
1107 p_sys->mjpeg_buffers.size * p_sys->mjpeg_buffers.count,
1108 PROT_READ | PROT_WRITE, MAP_SHARED, i_fd, 0 );
1109 if( p_sys->p_video_mmap == MAP_FAILED )
1111 msg_Err( p_demux, "mmap failed" );
1115 p_sys->i_fourcc = VLC_FOURCC( 'm','j','p','g' );
1116 p_sys->i_frame_pos = -1;
1118 /* queue up all the frames */
1119 for( i = 0; i < (int)p_sys->mjpeg_buffers.count; i++ )
1121 if( ioctl( i_fd, MJPIOC_QBUF_CAPT, &i ) < 0 )
1123 msg_Err( p_demux, "unable to queue frame" );
1130 /* Fill in picture_t fields */
1131 vout_InitPicture( VLC_OBJECT(p_demux), &p_sys->pic, p_sys->i_fourcc,
1132 p_sys->i_width, p_sys->i_height, p_sys->i_width *
1133 VOUT_ASPECT_FACTOR / p_sys->i_height );
1134 if( !p_sys->pic.i_planes )
1136 msg_Err( p_demux, "unsupported chroma" );
1139 p_sys->i_video_frame_size = 0;
1140 for( i = 0; i < p_sys->pic.i_planes; i++ )
1142 p_sys->i_video_frame_size += p_sys->pic.p[i].i_visible_lines *
1143 p_sys->pic.p[i].i_visible_pitch;
1146 msg_Dbg( p_demux, "v4l device uses frame size: %i",
1147 p_sys->i_video_frame_size );
1148 msg_Dbg( p_demux, "v4l device uses chroma: %4.4s",
1149 (char*)&p_sys->i_fourcc );
1151 /* Allocate mmap buffer */
1152 if( ioctl( i_fd, VIDIOCGMBUF, &p_sys->vid_mbuf ) < 0 )
1154 msg_Err( p_demux, "mmap unsupported" );
1158 p_sys->p_video_mmap = mmap( 0, p_sys->vid_mbuf.size,
1159 PROT_READ|PROT_WRITE, MAP_SHARED,
1161 if( p_sys->p_video_mmap == MAP_FAILED )
1163 /* FIXME -> normal read */
1164 msg_Err( p_demux, "mmap failed" );
1169 p_sys->vid_mmap.frame = 0;
1170 p_sys->vid_mmap.width = p_sys->i_width;
1171 p_sys->vid_mmap.height = p_sys->i_height;
1172 p_sys->vid_mmap.format = p_sys->vid_picture.palette;
1173 if( ioctl( i_fd, VIDIOCMCAPTURE, &p_sys->vid_mmap ) < 0 )
1175 msg_Warn( p_demux, "%4.4s refused", (char*)&p_sys->i_fourcc );
1176 msg_Err( p_demux, "chroma selection failed" );
1184 if( i_fd >= 0 ) close( i_fd );
1188 /*****************************************************************************
1190 *****************************************************************************/
1191 static uint8_t *GrabCapture( demux_t *p_demux )
1193 demux_sys_t *p_sys = p_demux->p_sys;
1194 int i_captured_frame = p_sys->i_frame_pos;
1196 p_sys->vid_mmap.frame = (p_sys->i_frame_pos + 1) % p_sys->vid_mbuf.frames;
1198 while( ioctl( p_sys->i_fd, VIDIOCMCAPTURE, &p_sys->vid_mmap ) < 0 )
1200 if( errno != EAGAIN )
1202 msg_Err( p_demux, "failed capturing new frame" );
1206 if( !vlc_object_alive (p_demux) )
1211 msg_Dbg( p_demux, "grab failed, trying again" );
1214 while( ioctl(p_sys->i_fd, VIDIOCSYNC, &p_sys->i_frame_pos) < 0 )
1216 if( errno != EAGAIN && errno != EINTR )
1218 msg_Err( p_demux, "failed syncing new frame" );
1223 p_sys->i_frame_pos = p_sys->vid_mmap.frame;
1224 /* leave i_video_frame_size alone */
1225 return p_sys->p_video_mmap + p_sys->vid_mbuf.offsets[i_captured_frame];
1228 static uint8_t *GrabMJPEG( demux_t *p_demux )
1230 demux_sys_t *p_sys = p_demux->p_sys;
1231 struct mjpeg_sync sync;
1232 uint8_t *p_frame, *p_field, *p;
1235 struct quicktime_mjpeg_app1 *p_app1 = NULL;
1237 /* re-queue the last frame we sync'd */
1238 if( p_sys->i_frame_pos != -1 )
1240 while( ioctl( p_sys->i_fd, MJPIOC_QBUF_CAPT,
1241 &p_sys->i_frame_pos ) < 0 )
1243 if( errno != EAGAIN && errno != EINTR )
1245 msg_Err( p_demux, "failed capturing new frame" );
1251 /* sync on the next frame */
1252 while( ioctl( p_sys->i_fd, MJPIOC_SYNC, &sync ) < 0 )
1254 if( errno != EAGAIN && errno != EINTR )
1256 msg_Err( p_demux, "failed syncing new frame" );
1261 p_sys->i_frame_pos = sync.frame;
1262 p_frame = p_sys->p_video_mmap + p_sys->mjpeg_buffers.size * sync.frame;
1264 /* p_frame now points to the data. fix up the Quicktime APP1 marker */
1266 tag = hton16( tag );
1270 p = memmem( p_field, sync.length, &tag, 2 );
1274 p += 2; /* data immediately following EOI */
1276 p_app1 = (struct quicktime_mjpeg_app1 *)(p_field + 6);
1278 i_size = ((uint32_t)(p - p_field));
1279 i_size = hton32( i_size );
1280 memcpy( &p_app1->i_field_size, &i_size, 4 );
1282 while( *p == 0xff && *(p+1) == 0xff )
1285 i_size = ((uint32_t)(p - p_field));
1286 i_size = hton32( i_size );
1287 memcpy( &p_app1->i_padded_field_size, &i_size, 4 );
1291 tag = hton16( tag );
1292 p_field = memmem( p, sync.length - (size_t)(p - p_frame), &tag, 2 );
1296 i_size = (uint32_t)(p_field - p_frame);
1297 i_size = hton32( i_size );
1298 memcpy( &p_app1->i_next_field, &i_size, 4 );
1301 p_app1 = (struct quicktime_mjpeg_app1 *)(p_field + 6);
1303 tag = hton16( tag );
1304 p = memmem( p_field, sync.length - (size_t)(p_field - p_frame),
1309 /* sometimes the second field doesn't have the EOI. just put it
1312 p = p_frame + sync.length;
1313 memcpy( p, &tag, 2 );
1318 i_size = (uint32_t)(p - p_field);
1319 i_size = hton32( i_size );
1320 memcpy( &p_app1->i_field_size, &i_size, 4 );
1321 i_size = (uint32_t)(sync.length - (uint32_t)(p_field - p_frame));
1322 i_size = hton32( i_size );
1323 memcpy( &p_app1->i_padded_field_size, &i_size, 4 );
1326 p_sys->i_video_frame_size = sync.length;
1330 static block_t *GrabVideo( demux_t *p_demux )
1332 demux_sys_t *p_sys = p_demux->p_sys;
1336 if( p_sys->f_fps >= 0.1 && p_sys->i_video_pts > 0 )
1338 mtime_t i_dur = (mtime_t)((double)1000000 / (double)p_sys->f_fps);
1340 /* Did we wait long enough ? (frame rate reduction) */
1341 if( p_sys->i_video_pts + i_dur > mdate() ) return 0;
1344 if( p_sys->b_mjpeg ) p_frame = GrabMJPEG( p_demux );
1345 else p_frame = GrabCapture( p_demux );
1347 if( !p_frame ) return 0;
1349 if( !( p_block = block_New( p_demux, p_sys->i_video_frame_size ) ) )
1351 msg_Warn( p_demux, "cannot get block" );
1355 memcpy( p_block->p_buffer, p_frame, p_sys->i_video_frame_size );
1356 p_sys->i_video_pts = p_block->i_pts = p_block->i_dts = mdate();