1 /*****************************************************************************
2 * v4l2.c : Video4Linux2 input module for vlc
3 *****************************************************************************
4 * Copyright (C) 2002-2007 the VideoLAN team
7 * Authors: Benjamin Pracht <bigben at videolan dot org>
8 * Richard Hosking <richard at hovis dot net>
9 * Antoine Cellerier <dionoea at videolan d.t org>
10 * Dennis Lou <dlou99 at yahoo dot com>
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 *****************************************************************************/
28 * Sections based on the reference V4L2 capture example at
29 * http://v4l2spec.bytesex.org/spec/capture-example.html
31 * ALSA support based on parts of
32 * http://www.equalarea.com/paul/alsa-audio.html
33 * and hints taken from alsa-utils (aplay/arecord)
34 * http://www.alsa-project.org
37 /*****************************************************************************
39 *****************************************************************************/
45 #include <vlc_common.h>
46 #include <vlc_plugin.h>
47 #include <vlc_access.h>
48 #include <vlc_demux.h>
49 #include <vlc_input.h>
55 #include <sys/ioctl.h>
58 #include <linux/videodev2.h>
60 #include <sys/soundcard.h>
63 # define ALSA_PCM_NEW_HW_PARAMS_API
64 # define ALSA_PCM_NEW_SW_PARAMS_API
65 # include <alsa/asoundlib.h>
70 /*****************************************************************************
72 *****************************************************************************/
74 static int DemuxOpen ( vlc_object_t * );
75 static void DemuxClose( vlc_object_t * );
76 static int AccessOpen ( vlc_object_t * );
77 static void AccessClose( vlc_object_t * );
79 #define DEV_TEXT N_("Device name")
80 #define DEV_LONGTEXT N_( \
81 "Name of the device to use. " \
82 "If you don't specify anything, /dev/video0 will be used.")
83 #define STANDARD_TEXT N_( "Standard" )
84 #define STANDARD_LONGTEXT N_( \
85 "Video standard (Default, SECAM, PAL, or NTSC)." )
86 #define CHROMA_TEXT N_("Video input chroma format")
87 #define CHROMA_LONGTEXT N_( \
88 "Force the Video4Linux2 video device to use a specific chroma format " \
89 "(eg. I420 or I422 for raw images, MJPG for M-JPEG compressed input) " \
90 "(Complete list: GREY, I240, RV16, RV15, RV24, RV32, YUY2, YUYV, UYVY, " \
91 "I41N, I422, I420, I411, I410, MJPG)")
92 #define INPUT_TEXT N_( "Input" )
93 #define INPUT_LONGTEXT N_( \
94 "Input of the card to use (see debug)." )
95 #define AUDIO_INPUT_TEXT N_( "Audio input" )
96 #define AUDIO_INPUT_LONGTEXT N_( \
97 "Audio input of the card to use (see debug)." )
98 #define IOMETHOD_TEXT N_( "IO Method" )
99 #define IOMETHOD_LONGTEXT N_( \
100 "IO Method (READ, MMAP, USERPTR)." )
101 #define WIDTH_TEXT N_( "Width" )
102 #define WIDTH_LONGTEXT N_( \
103 "Force width (-1 for autodetect)." )
104 #define HEIGHT_TEXT N_( "Height" )
105 #define HEIGHT_LONGTEXT N_( \
106 "Force height (-1 for autodetect)." )
107 #define FPS_TEXT N_( "Framerate" )
108 #define FPS_LONGTEXT N_( "Framerate to capture, if applicable " \
109 "(-1 for autodetect)." )
111 #define CTRL_RESET_TEXT N_( "Reset v4l2 controls" )
112 #define CTRL_RESET_LONGTEXT N_( \
113 "Reset controls to defaults provided by the v4l2 driver." )
114 #define BRIGHTNESS_TEXT N_( "Brightness" )
115 #define BRIGHTNESS_LONGTEXT N_( \
116 "Brightness of the video input (if supported by the v4l2 driver)." )
117 #define CONTRAST_TEXT N_( "Contrast" )
118 #define CONTRAST_LONGTEXT N_( \
119 "Contrast of the video input (if supported by the v4l2 driver)." )
120 #define SATURATION_TEXT N_( "Saturation" )
121 #define SATURATION_LONGTEXT N_( \
122 "Saturation of the video input (if supported by the v4l2 driver)." )
123 #define HUE_TEXT N_( "Hue" )
124 #define HUE_LONGTEXT N_( \
125 "Hue of the video input (if supported by the v4l2 driver)." )
126 #define BLACKLEVEL_TEXT N_( "Black level" )
127 #define BLACKLEVEL_LONGTEXT N_( \
128 "Black level of the video input (if supported by the v4l2 driver)." )
129 #define AUTOWHITEBALANCE_TEXT N_( "Auto white balance" )
130 #define AUTOWHITEBALANCE_LONGTEXT N_( \
131 "Automatically set the white balance of the video input " \
132 "(if supported by the v4l2 driver)." )
133 #define DOWHITEBALANCE_TEXT N_( "Do white balance" )
134 #define DOWHITEBALANCE_LONGTEXT N_( \
135 "Trigger a white balancing action, useless if auto white balance is " \
136 "activated (if supported by the v4l2 driver)." )
137 #define REDBALANCE_TEXT N_( "Red balance" )
138 #define REDBALANCE_LONGTEXT N_( \
139 "Red balance of the video input (if supported by the v4l2 driver)." )
140 #define BLUEBALANCE_TEXT N_( "Blue balance" )
141 #define BLUEBALANCE_LONGTEXT N_( \
142 "Blue balance of the video input (if supported by the v4l2 driver)." )
143 #define GAMMA_TEXT N_( "Gamma" )
144 #define GAMMA_LONGTEXT N_( \
145 "Gamma of the video input (if supported by the v4l2 driver)." )
146 #define EXPOSURE_TEXT N_( "Exposure" )
147 #define EXPOSURE_LONGTEXT N_( \
148 "Exposure of the video input (if supported by the v4L2 driver)." )
149 #define AUTOGAIN_TEXT N_( "Auto gain" )
150 #define AUTOGAIN_LONGTEXT N_( \
151 "Automatically set the video input's gain (if supported by the " \
153 #define GAIN_TEXT N_( "Gain" )
154 #define GAIN_LONGTEXT N_( \
155 "Video input's gain (if supported by the v4l2 driver)." )
156 #define HFLIP_TEXT N_( "Horizontal flip" )
157 #define HFLIP_LONGTEXT N_( \
158 "Flip the video horizontally (if supported by the v4l2 driver)." )
159 #define VFLIP_TEXT N_( "Vertical flip" )
160 #define VFLIP_LONGTEXT N_( \
161 "Flip the video vertically (if supported by the v4l2 driver)." )
162 #define HCENTER_TEXT N_( "Horizontal centering" )
163 #define HCENTER_LONGTEXT N_( \
164 "Set the camera's horizontal centering (if supported by the v4l2 driver)." )
165 #define VCENTER_TEXT N_( "Vertical centering" )
166 #define VCENTER_LONGTEXT N_( \
167 "Set the camera's vertical centering (if supported by the v4l2 driver)." )
169 #define ADEV_TEXT N_("Audio device name")
171 #define ADEV_LONGTEXT N_( \
172 "Name of the audio device to use. " \
173 "If you don't specify anything, \"/dev/dsp\" will be used for OSS.")
175 #define ADEV_LONGTEXT N_( \
176 "Name of the audio device to use. " \
177 "If you don't specify anything, \"/dev/dsp\" will be used for OSS, " \
180 #define AUDIO_METHOD_TEXT N_( "Audio method" )
182 #define AUDIO_METHOD_LONGTEXT N_( \
183 "Audio method to use: 0 to disable audio, 1 for OSS." )
185 #define AUDIO_METHOD_LONGTEXT N_( \
186 "Audio method to use: 0 to disable audio, 1 for OSS, 2 for ALSA, " \
187 "3 for ALSA or OSS (ALSA is preferred)." )
189 #define AUDIO_VOLUME_TEXT N_( "Volume" )
190 #define AUDIO_VOLUME_LONGTEXT N_( \
191 "Volume of the audio input (if supported by the v4l2 driver)." )
192 #define AUDIO_BALANCE_TEXT N_( "Balance" )
193 #define AUDIO_BALANCE_LONGTEXT N_( \
194 "Balance of the audio input (if supported by the v4l2 driver)." )
195 #define AUDIO_MUTE_TEXT N_( "Mute" )
196 #define AUDIO_MUTE_LONGTEXT N_( \
197 "Mute audio input (if supported by the v4l2 driver)." )
198 #define AUDIO_BASS_TEXT N_( "Bass" )
199 #define AUDIO_BASS_LONGTEXT N_( \
200 "Bass level of the audio input (if supported by the v4l2 driver)." )
201 #define AUDIO_TREBLE_TEXT N_( "Treble" )
202 #define AUDIO_TREBLE_LONGTEXT N_( \
203 "Treble level of the audio input (if supported by the v4l2 driver)." )
204 #define AUDIO_LOUDNESS_TEXT N_( "Loudness" )
205 #define AUDIO_LOUDNESS_LONGTEXT N_( \
206 "Loudness of the audio input (if supported by the v4l2 driver)." )
208 #define STEREO_TEXT N_( "Stereo" )
209 #define STEREO_LONGTEXT N_( \
210 "Capture the audio stream in stereo." )
211 #define SAMPLERATE_TEXT N_( "Samplerate" )
212 #define SAMPLERATE_LONGTEXT N_( \
213 "Samplerate of the captured audio stream, in Hz (eg: 11025, 22050, 44100, 48000)" )
215 #define CACHING_TEXT N_("Caching value in ms")
216 #define CACHING_LONGTEXT N_( \
217 "Caching value for V4L2 captures. This " \
218 "value should be set in milliseconds." )
219 #define S_CTRLS_TEXT N_("v4l2 driver controls")
220 #define S_CTRLS_LONGTEXT N_( \
221 "Set the v4l2 driver controls to the values specified using a comma " \
222 "separated list optionally encapsulated by curly braces " \
223 "(e.g.: {video_bitrate=6000000,audio_crc=0,stream_type=3} ). " \
224 "To list available controls, increase verbosity (-vvv) " \
225 "or use the v4l2-ctl application." )
227 #define TUNER_TEXT N_("Tuner id")
228 #define TUNER_LONGTEXT N_( \
229 "Tuner id (see debug output)." )
230 #define FREQUENCY_TEXT N_("Frequency")
231 #define FREQUENCY_LONGTEXT N_( \
232 "Tuner frequency in Hz or kHz (see debug output)" )
233 #define TUNER_AUDIO_MODE_TEXT N_("Audio mode")
234 #define TUNER_AUDIO_MODE_LONGTEXT N_( \
235 "Tuner audio mono/stereo and track selection." )
243 static const int i_standards_list[] =
244 { V4L2_STD_UNKNOWN, V4L2_STD_SECAM, V4L2_STD_PAL, V4L2_STD_NTSC };
245 static const char *const psz_standards_list_text[] =
246 { N_("Default"), N_("SECAM"), N_("PAL"), N_("NTSC") };
248 static const int i_iomethod_list[] =
249 { IO_METHOD_READ, IO_METHOD_MMAP, IO_METHOD_USERPTR };
250 static const char *const psz_iomethod_list_text[] =
251 { N_("READ"), N_("MMAP"), N_("USERPTR") };
253 static const int i_tuner_audio_modes_list[] =
254 { V4L2_TUNER_MODE_MONO, V4L2_TUNER_MODE_STEREO,
255 V4L2_TUNER_MODE_LANG1, V4L2_TUNER_MODE_LANG2,
256 V4L2_TUNER_MODE_SAP, V4L2_TUNER_MODE_LANG1_LANG2 };
257 static const char *const psz_tuner_audio_modes_list_text[] =
260 N_( "Primary language (Analog TV tuners only)" ),
261 N_( "Secondary language (Analog TV tuners only)" ),
262 N_( "Second audio program (Analog TV tuners only)" ),
263 N_( "Primary language left, Secondary language right" ) };
268 #define AUDIO_METHOD_OSS 1
269 #define OSS_DEFAULT "/dev/dsp"
270 #define AUDIO_METHOD_ALSA 2
271 #define ALSA_DEFAULT "hw"
272 #define CFG_PREFIX "v4l2-"
275 set_shortname( N_("Video4Linux2") );
276 set_description( N_("Video4Linux2 input") );
277 set_category( CAT_INPUT );
278 set_subcategory( SUBCAT_INPUT_ACCESS );
280 set_section( N_( "Video input" ), NULL );
281 add_string( CFG_PREFIX "dev", "/dev/video0", 0, DEV_TEXT, DEV_LONGTEXT,
283 add_integer( CFG_PREFIX "standard", 0, NULL, STANDARD_TEXT,
284 STANDARD_LONGTEXT, false );
285 change_integer_list( i_standards_list, psz_standards_list_text, NULL );
286 add_string( CFG_PREFIX "chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
288 add_integer( CFG_PREFIX "input", 0, NULL, INPUT_TEXT, INPUT_LONGTEXT,
290 add_integer( CFG_PREFIX "audio-input", 0, NULL, AUDIO_INPUT_TEXT,
291 AUDIO_INPUT_LONGTEXT, true );
292 add_integer( CFG_PREFIX "io", IO_METHOD_MMAP, NULL, IOMETHOD_TEXT,
293 IOMETHOD_LONGTEXT, true );
294 change_integer_list( i_iomethod_list, psz_iomethod_list_text, NULL );
295 add_integer( CFG_PREFIX "width", 0, NULL, WIDTH_TEXT,
296 WIDTH_LONGTEXT, true );
297 add_integer( CFG_PREFIX "height", 0, NULL, HEIGHT_TEXT,
298 HEIGHT_LONGTEXT, true );
299 add_float( CFG_PREFIX "fps", 0, NULL, FPS_TEXT, FPS_LONGTEXT, true );
301 set_section( N_( "Audio input" ), NULL );
302 add_string( CFG_PREFIX "adev", NULL, 0, ADEV_TEXT, ADEV_LONGTEXT,
304 add_integer( CFG_PREFIX "audio-method", AUDIO_METHOD_OSS|AUDIO_METHOD_ALSA,
305 NULL, AUDIO_METHOD_TEXT, AUDIO_METHOD_LONGTEXT, true );
306 add_bool( CFG_PREFIX "stereo", true, NULL, STEREO_TEXT, STEREO_LONGTEXT,
308 add_integer( CFG_PREFIX "samplerate", 48000, NULL, SAMPLERATE_TEXT,
309 SAMPLERATE_LONGTEXT, true );
310 add_integer( CFG_PREFIX "caching", DEFAULT_PTS_DELAY / 1000, NULL,
311 CACHING_TEXT, CACHING_LONGTEXT, true );
313 set_section( N_( "Tuner" ), NULL );
314 add_integer( CFG_PREFIX "tuner", 0, NULL, TUNER_TEXT, TUNER_LONGTEXT,
316 add_integer( CFG_PREFIX "tuner-frequency", -1, NULL, FREQUENCY_TEXT,
317 FREQUENCY_LONGTEXT, true );
318 add_integer( CFG_PREFIX "tuner-audio-mode", -1, NULL, TUNER_AUDIO_MODE_TEXT,
319 TUNER_AUDIO_MODE_LONGTEXT, true );
320 change_integer_list( i_tuner_audio_modes_list,
321 psz_tuner_audio_modes_list_text, 0 );
323 set_section( N_( "Controls" ),
324 N_( "v4l2 driver controls, if supported by your v4l2 driver." ) );
325 add_bool( CFG_PREFIX "controls-reset", false, NULL, CTRL_RESET_TEXT,
326 CTRL_RESET_LONGTEXT, true );
327 add_integer( CFG_PREFIX "brightness", -1, NULL, BRIGHTNESS_TEXT,
328 BRIGHTNESS_LONGTEXT, true );
329 add_integer( CFG_PREFIX "contrast", -1, NULL, CONTRAST_TEXT,
330 CONTRAST_LONGTEXT, true );
331 add_integer( CFG_PREFIX "saturation", -1, NULL, SATURATION_TEXT,
332 SATURATION_LONGTEXT, true );
333 add_integer( CFG_PREFIX "hue", -1, NULL, HUE_TEXT,
334 HUE_LONGTEXT, true );
335 add_integer( CFG_PREFIX "black-level", -1, NULL, BLACKLEVEL_TEXT,
336 BLACKLEVEL_LONGTEXT, true );
337 add_integer( CFG_PREFIX "auto-white-balance", -1, NULL,
338 AUTOWHITEBALANCE_TEXT, AUTOWHITEBALANCE_LONGTEXT, true );
339 add_integer( CFG_PREFIX "do-white-balance", -1, NULL, DOWHITEBALANCE_TEXT,
340 DOWHITEBALANCE_LONGTEXT, true );
341 add_integer( CFG_PREFIX "red-balance", -1, NULL, REDBALANCE_TEXT,
342 REDBALANCE_LONGTEXT, true );
343 add_integer( CFG_PREFIX "blue-balance", -1, NULL, BLUEBALANCE_TEXT,
344 BLUEBALANCE_LONGTEXT, true );
345 add_integer( CFG_PREFIX "gamma", -1, NULL, GAMMA_TEXT,
346 GAMMA_LONGTEXT, true );
347 add_integer( CFG_PREFIX "exposure", -1, NULL, EXPOSURE_TEXT,
348 EXPOSURE_LONGTEXT, true );
349 add_integer( CFG_PREFIX "autogain", -1, NULL, AUTOGAIN_TEXT,
350 AUTOGAIN_LONGTEXT, true );
351 add_integer( CFG_PREFIX "gain", -1, NULL, GAIN_TEXT,
352 GAIN_LONGTEXT, true );
353 add_integer( CFG_PREFIX "hflip", -1, NULL, HFLIP_TEXT,
354 HFLIP_LONGTEXT, true );
355 add_integer( CFG_PREFIX "vflip", -1, NULL, VFLIP_TEXT,
356 VFLIP_LONGTEXT, true );
357 add_integer( CFG_PREFIX "hcenter", -1, NULL, HCENTER_TEXT,
358 HCENTER_LONGTEXT, true );
359 add_integer( CFG_PREFIX "vcenter", -1, NULL, VCENTER_TEXT,
360 VCENTER_LONGTEXT, true );
361 add_integer( CFG_PREFIX "audio-volume", -1, NULL, AUDIO_VOLUME_TEXT,
362 AUDIO_VOLUME_LONGTEXT, true );
363 add_integer( CFG_PREFIX "audio-balance", -1, NULL, AUDIO_BALANCE_TEXT,
364 AUDIO_BALANCE_LONGTEXT, true );
365 add_bool( CFG_PREFIX "audio-mute", false, NULL, AUDIO_MUTE_TEXT,
366 AUDIO_MUTE_LONGTEXT, true );
367 add_integer( CFG_PREFIX "audio-bass", -1, NULL, AUDIO_BASS_TEXT,
368 AUDIO_BASS_LONGTEXT, true );
369 add_integer( CFG_PREFIX "audio-treble", -1, NULL, AUDIO_TREBLE_TEXT,
370 AUDIO_TREBLE_LONGTEXT, true );
371 add_integer( CFG_PREFIX "audio-loudness", -1, NULL, AUDIO_LOUDNESS_TEXT,
372 AUDIO_LOUDNESS_LONGTEXT, true );
373 add_string( CFG_PREFIX "set-ctrls", NULL, NULL, S_CTRLS_TEXT,
374 S_CTRLS_LONGTEXT, true );
376 add_shortcut( "v4l2" );
377 set_capability( "access_demux", 10 );
378 set_callbacks( DemuxOpen, DemuxClose );
381 add_shortcut( "v4l2c" );
382 set_description( N_("Video4Linux2 Compressed A/V") );
383 set_capability( "access", 0 );
384 /* use these when open as access_demux fails; VLC will use another demux */
385 set_callbacks( AccessOpen, AccessClose );
389 /*****************************************************************************
390 * Access: local prototypes
391 *****************************************************************************/
393 static void CommonClose( vlc_object_t *, demux_sys_t * );
394 static void ParseMRL( demux_sys_t *, char *, vlc_object_t * );
395 static void GetV4L2Params( demux_sys_t *, vlc_object_t * );
396 static void SetAvailControlsByString( vlc_object_t *, demux_sys_t *, int );
398 static int DemuxControl( demux_t *, int, va_list );
399 static int AccessControl( access_t *, int, va_list );
401 static int Demux( demux_t * );
402 static ssize_t AccessRead( access_t *, uint8_t *, size_t );
404 static block_t* GrabVideo( demux_t *p_demux );
405 static block_t* ProcessVideoFrame( demux_t *p_demux, uint8_t *p_frame, size_t );
406 static block_t* GrabAudio( demux_t *p_demux );
408 static bool IsPixelFormatSupported( demux_t *p_demux,
409 unsigned int i_pixelformat );
412 static char* ResolveALSADeviceName( const char *psz_device );
414 static int OpenVideoDev( vlc_object_t *, demux_sys_t *, bool );
415 static int OpenAudioDev( vlc_object_t *, demux_sys_t *, bool );
416 static bool ProbeVideoDev( vlc_object_t *, demux_sys_t *,
418 static bool ProbeAudioDev( vlc_object_t *, demux_sys_t *,
421 static int ControlList( vlc_object_t *, int , bool, bool );
422 static int Control( vlc_object_t *, int i_fd,
423 const char *psz_name, int i_cid, int i_value );
425 static int DemuxControlCallback( vlc_object_t *p_this, const char *psz_var,
426 vlc_value_t oldval, vlc_value_t newval,
428 static int DemuxControlResetCallback( vlc_object_t *p_this, const char *psz_var,
429 vlc_value_t oldval, vlc_value_t newval,
431 static int AccessControlCallback( vlc_object_t *p_this, const char *psz_var,
432 vlc_value_t oldval, vlc_value_t newval,
434 static int AccessControlResetCallback( vlc_object_t *p_this,
435 const char *psz_var, vlc_value_t oldval,
436 vlc_value_t newval, void *p_data );
442 } v4l2chroma_to_fourcc[] =
445 { V4L2_PIX_FMT_GREY, VLC_FOURCC('G','R','E','Y') },
446 { V4L2_PIX_FMT_HI240, VLC_FOURCC('I','2','4','0') },
447 { V4L2_PIX_FMT_RGB565, VLC_FOURCC('R','V','1','6') },
448 { V4L2_PIX_FMT_RGB555, VLC_FOURCC('R','V','1','5') },
449 { V4L2_PIX_FMT_BGR24, VLC_FOURCC('R','V','2','4') },
450 { V4L2_PIX_FMT_BGR32, VLC_FOURCC('R','V','3','2') },
451 { V4L2_PIX_FMT_YUYV, VLC_FOURCC('Y','U','Y','2') },
452 { V4L2_PIX_FMT_YUYV, VLC_FOURCC('Y','U','Y','V') },
453 { V4L2_PIX_FMT_UYVY, VLC_FOURCC('U','Y','V','Y') },
454 { V4L2_PIX_FMT_Y41P, VLC_FOURCC('I','4','1','N') },
455 { V4L2_PIX_FMT_YUV422P, VLC_FOURCC('I','4','2','2') },
456 { V4L2_PIX_FMT_YVU420, VLC_FOURCC('Y','V','1','2') },
457 { V4L2_PIX_FMT_YUV411P, VLC_FOURCC('I','4','1','1') },
458 { V4L2_PIX_FMT_YUV410, VLC_FOURCC('I','4','1','0') },
460 /* Raw data types, not in V4L2 spec but still in videodev2.h and supported
462 { V4L2_PIX_FMT_YUV420, VLC_FOURCC('I','4','2','0') },
463 /* FIXME { V4L2_PIX_FMT_RGB444, VLC_FOURCC('R','V','3','2') }, */
465 /* Compressed data types */
466 { V4L2_PIX_FMT_MJPEG, VLC_FOURCC('M','J','P','G') },
468 { V4L2_PIX_FMT_JPEG, VLC_FOURCC('J','P','E','G') },
469 { V4L2_PIX_FMT_DV, VLC_FOURCC('?','?','?','?') },
470 { V4L2_PIX_FMT_MPEG, VLC_FOURCC('?','?','?','?') },
476 * List of V4L2 chromas were confident enough to use as fallbacks if the
477 * user hasn't provided a --v4l2-chroma value.
479 static const __u32 p_chroma_fallbacks[] =
480 { V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_YVU420, V4L2_PIX_FMT_YUV422P,
481 V4L2_PIX_FMT_YUYV, V4L2_PIX_FMT_UYVY, V4L2_PIX_FMT_MJPEG };
485 const char *psz_name;
489 { "brightness", V4L2_CID_BRIGHTNESS },
490 { "contrast", V4L2_CID_CONTRAST },
491 { "saturation", V4L2_CID_SATURATION },
492 { "hue", V4L2_CID_HUE },
493 { "audio-volume", V4L2_CID_AUDIO_VOLUME },
494 { "audio-balance", V4L2_CID_AUDIO_BALANCE },
495 { "audio-bass", V4L2_CID_AUDIO_BASS },
496 { "audio-treble", V4L2_CID_AUDIO_TREBLE },
497 { "audio-mute", V4L2_CID_AUDIO_MUTE },
498 { "audio-loudness", V4L2_CID_AUDIO_LOUDNESS },
499 { "black-level", V4L2_CID_BLACK_LEVEL },
500 { "auto-white-balance", V4L2_CID_AUTO_WHITE_BALANCE },
501 { "do-white-balance", V4L2_CID_DO_WHITE_BALANCE },
502 { "red-balance", V4L2_CID_RED_BALANCE },
503 { "blue-balance", V4L2_CID_BLUE_BALANCE },
504 { "gamma", V4L2_CID_GAMMA },
505 { "exposure", V4L2_CID_EXPOSURE },
506 { "autogain", V4L2_CID_AUTOGAIN },
507 { "gain", V4L2_CID_GAIN },
508 { "hflip", V4L2_CID_HFLIP },
509 { "vflip", V4L2_CID_VFLIP },
510 { "hcenter", V4L2_CID_HCENTER },
511 { "vcenter", V4L2_CID_VCENTER },
523 char *psz_device; /* Main device from MRL, can be video or audio */
531 char *psz_requested_chroma;
538 struct v4l2_capability dev_cap;
541 struct v4l2_input *p_inputs;
542 int i_selected_input;
545 struct v4l2_standard *p_standards;
546 v4l2_std_id i_selected_standard_id;
549 /* V4L2 devices cannot have more than 32 audio inputs */
550 struct v4l2_audio p_audios[32];
551 int i_selected_audio_input;
554 struct v4l2_tuner *p_tuners;
557 struct v4l2_fmtdesc *p_codecs;
559 struct buffer_t *p_buffers;
560 unsigned int i_nbuffers;
564 float f_fps; /* <= 0.0 mean to grab at full rate */
565 mtime_t i_video_pts; /* only used when f_fps > 0 */
568 es_out_id_t *p_es_video;
571 unsigned int i_sample_rate;
573 size_t i_audio_max_frame_size;
574 block_t *p_block_audio;
575 es_out_id_t *p_es_audio;
581 snd_pcm_t *p_alsa_pcm;
582 size_t i_alsa_frame_size;
583 int i_alsa_chunk_size;
595 static int FindMainDevice( vlc_object_t *p_this, demux_sys_t *p_sys,
596 int i_flags, bool b_demux,
599 /* Find main device (video or audio) */
600 if( p_sys->psz_device && *p_sys->psz_device )
602 msg_Dbg( p_this, "main device='%s'", p_sys->psz_device );
604 bool b_maindevice_is_video = false;
606 /* Try to open as video device */
607 if( i_flags & FIND_VIDEO )
609 msg_Dbg( p_this, "trying device '%s' as video", p_sys->psz_device );
610 if( ProbeVideoDev( p_this, p_sys, p_sys->psz_device ) )
612 msg_Dbg( p_this, "'%s' is a video device", p_sys->psz_device );
613 /* Device was a video device */
614 free( p_sys->psz_vdev );
615 p_sys->psz_vdev = p_sys->psz_device;
616 p_sys->psz_device = NULL;
617 p_sys->i_fd_video = OpenVideoDev( p_this, p_sys, b_demux );
618 if( p_sys->i_fd_video < 0 )
620 b_maindevice_is_video = true;
621 /* If successful we carry on to try the audio if access is forced */
625 /* Try to open as audio device only if main device was not detected as video above */
626 if( i_flags & FIND_AUDIO && !b_maindevice_is_video )
628 msg_Dbg( p_this, "trying device '%s' as audio", p_sys->psz_device );
629 if( ProbeAudioDev( p_this, p_sys, p_sys->psz_device ) )
631 msg_Dbg( p_this, "'%s' is an audio device", p_sys->psz_device );
632 /* Device was an audio device */
633 free( p_sys->psz_adev );
634 p_sys->psz_adev = p_sys->psz_device;
635 p_sys->psz_device = NULL;
636 p_sys->i_fd_audio = OpenAudioDev( p_this, p_sys, b_demux );
637 if( p_sys->i_fd_audio < 0 )
639 /* If successful we carry on to try the video if access is forced */
644 /* If no device opened, only continue if the access was forced */
645 if( b_forced == false
646 && !( ( i_flags & FIND_VIDEO && p_sys->i_fd_video >= 0 )
647 || ( i_flags & FIND_AUDIO && p_sys->i_fd_audio >= 0 ) ) )
652 /* Find video device */
653 if( i_flags & FIND_VIDEO && p_sys->i_fd_video < 0 )
655 if( !p_sys->psz_vdev || !*p_sys->psz_vdev )
657 free( p_sys->psz_vdev );
658 p_sys->psz_vdev = var_CreateGetString( p_this, "v4l2-dev" );
661 msg_Dbg( p_this, "opening '%s' as video", p_sys->psz_vdev );
662 if( p_sys->psz_vdev && *p_sys->psz_vdev
663 && ProbeVideoDev( p_this, p_sys, p_sys->psz_vdev ) )
665 p_sys->i_fd_video = OpenVideoDev( p_this, p_sys, b_demux );
669 /* Find audio device */
670 if( i_flags & FIND_AUDIO && p_sys->i_fd_audio < 0 )
672 if( !p_sys->psz_adev )
674 p_sys->psz_adev = var_CreateGetNonEmptyString( p_this, "v4l2-adev" );
677 msg_Dbg( p_this, "opening '%s' as audio", p_sys->psz_adev );
678 if( ProbeAudioDev( p_this, p_sys, p_sys->psz_adev ) )
680 p_sys->i_fd_audio = OpenAudioDev( p_this, p_sys, b_demux );
684 if( !( ( i_flags & FIND_VIDEO && p_sys->i_fd_video >= 0 )
685 || ( i_flags & FIND_AUDIO && p_sys->i_fd_audio >= 0 ) ) )
692 /*****************************************************************************
693 * DemuxOpen: opens v4l2 device, access_demux callback
694 *****************************************************************************
696 * url: <video device>::::
698 *****************************************************************************/
699 static int DemuxOpen( vlc_object_t *p_this )
701 demux_t *p_demux = (demux_t*)p_this;
704 /* Only when selected */
705 if( *p_demux->psz_access == '\0' ) return VLC_EGENERIC;
708 p_demux->pf_control = DemuxControl;
709 p_demux->pf_demux = Demux;
710 p_demux->info.i_update = 0;
711 p_demux->info.i_title = 0;
712 p_demux->info.i_seekpoint = 0;
714 p_demux->p_sys = p_sys = calloc( 1, sizeof( demux_sys_t ) );
715 if( p_sys == NULL ) return VLC_ENOMEM;
717 GetV4L2Params(p_sys, (vlc_object_t *) p_demux);
719 ParseMRL( p_sys, p_demux->psz_path, (vlc_object_t *) p_demux );
722 /* Alsa support available? */
723 msg_Dbg( p_demux, "ALSA input support available" );
726 if( FindMainDevice( p_this, p_sys, FIND_VIDEO|FIND_AUDIO,
727 true, !strncmp( p_demux->psz_access, "v4l2", 4 ) ) != VLC_SUCCESS )
729 DemuxClose( p_this );
736 /*****************************************************************************
737 * GetV4L2Params: fill in p_sys parameters (shared by DemuxOpen and AccessOpen)
738 *****************************************************************************/
739 static void GetV4L2Params( demux_sys_t *p_sys, vlc_object_t *p_obj )
741 p_sys->i_video_pts = -1;
743 p_sys->i_selected_standard_id =
744 i_standards_list[var_CreateGetInteger( p_obj, "v4l2-standard" )];
746 p_sys->i_selected_input = var_CreateGetInteger( p_obj, "v4l2-input" );
747 p_sys->i_selected_audio_input =
748 var_CreateGetInteger( p_obj, "v4l2-audio-input" );
750 p_sys->io = var_CreateGetInteger( p_obj, "v4l2-io" );
752 p_sys->i_width = var_CreateGetInteger( p_obj, "v4l2-width" );
753 p_sys->i_height = var_CreateGetInteger( p_obj, "v4l2-height" );
755 var_CreateGetBool( p_obj, "v4l2-controls-reset" );
757 p_sys->f_fps = var_CreateGetFloat( p_obj, "v4l2-fps" );
758 p_sys->i_sample_rate = var_CreateGetInteger( p_obj, "v4l2-samplerate" );
759 p_sys->psz_requested_chroma = var_CreateGetString( p_obj, "v4l2-chroma" );
761 p_sys->i_audio_method = var_CreateGetInteger( p_obj, "v4l2-audio-method" );
763 p_sys->b_stereo = var_CreateGetBool( p_obj, "v4l2-stereo" );
765 p_sys->i_pts = var_CreateGetInteger( p_obj, "v4l2-caching" );
767 p_sys->i_cur_tuner = var_CreateGetInteger( p_obj, "v4l2-tuner" );
768 p_sys->i_frequency = var_CreateGetInteger( p_obj, "v4l2-tuner-frequency" );
769 p_sys->i_audio_mode = var_CreateGetInteger( p_obj, "v4l2-tuner-audio-mode" );
771 p_sys->psz_set_ctrls = var_CreateGetString( p_obj, "v4l2-set-ctrls" );
773 p_sys->psz_device = p_sys->psz_vdev = p_sys->psz_adev = NULL;
774 p_sys->i_fd_video = -1;
775 p_sys->i_fd_audio = -1;
777 p_sys->p_es_video = p_sys->p_es_audio = 0;
778 p_sys->p_block_audio = 0;
781 /*****************************************************************************
782 * ParseMRL: parse the options contained in the MRL
783 *****************************************************************************/
784 static void ParseMRL( demux_sys_t *p_sys, char *psz_path, vlc_object_t *p_obj )
786 char *psz_dup = strdup( psz_path );
787 char *psz_parser = psz_dup;
789 while( *psz_parser && *psz_parser != ':' )
794 if( *psz_parser == ':' )
799 *psz_parser++ = '\0';
801 if( !strncmp( psz_parser, "adev=", strlen( "adev=" ) ) )
805 psz_parser += strlen( "adev=" );
806 if( strchr( psz_parser, ':' ) )
808 i_len = strchr( psz_parser, ':' ) - psz_parser;
812 i_len = strlen( psz_parser );
815 p_sys->psz_adev = strndup( psz_parser, i_len );
816 if( !*p_sys->psz_adev )
818 free( p_sys->psz_adev );
819 p_sys->psz_adev = NULL;
824 else if( !strncmp( psz_parser, "standard=", strlen( "standard=" ) ) )
826 psz_parser += strlen( "standard=" );
827 if( !strncmp( psz_parser, "pal", strlen( "pal" ) ) )
829 p_sys->i_selected_standard_id = V4L2_STD_PAL;
830 psz_parser += strlen( "pal" );
832 else if( !strncmp( psz_parser, "ntsc", strlen( "ntsc" ) ) )
834 p_sys->i_selected_standard_id = V4L2_STD_NTSC;
835 psz_parser += strlen( "ntsc" );
837 else if( !strncmp( psz_parser, "secam", strlen( "secam" ) ) )
839 p_sys->i_selected_standard_id = V4L2_STD_SECAM;
840 psz_parser += strlen( "secam" );
842 else if( !strncmp( psz_parser, "default", strlen( "default" ) ) )
844 p_sys->i_selected_standard_id = V4L2_STD_UNKNOWN;
845 psz_parser += strlen( "default" );
849 p_sys->i_selected_standard_id = i_standards_list[strtol( psz_parser, &psz_parser, 0 )];
852 else if( !strncmp( psz_parser, "chroma=", strlen( "chroma=" ) ) )
856 psz_parser += strlen( "chroma=" );
857 if( strchr( psz_parser, ':' ) )
859 i_len = strchr( psz_parser, ':' ) - psz_parser;
863 i_len = strlen( psz_parser );
866 free( p_sys->psz_requested_chroma );
867 p_sys->psz_requested_chroma = strndup( psz_parser, i_len );
871 else if( !strncmp( psz_parser, "input=", strlen( "input=" ) ) )
873 p_sys->i_selected_input = strtol( psz_parser + strlen( "input=" ),
876 else if( !strncmp( psz_parser, "audio-input=", strlen( "audio-input=" ) ) )
878 p_sys->i_selected_audio_input = strtol( psz_parser + strlen( "audio-input=" ),
881 else if( !strncmp( psz_parser, "fps=", strlen( "fps=" ) ) )
883 p_sys->f_fps = strtof( psz_parser + strlen( "fps=" ),
886 else if( !strncmp( psz_parser, "io=", strlen( "io=" ) ) )
888 psz_parser += strlen( "io=" );
889 if( !strncmp( psz_parser, "read", strlen( "read" ) ) )
891 p_sys->io = IO_METHOD_READ;
892 psz_parser += strlen( "read" );
894 else if( !strncmp( psz_parser, "mmap", strlen( "mmap" ) ) )
896 p_sys->io = IO_METHOD_MMAP;
897 psz_parser += strlen( "mmap" );
899 else if( !strncmp( psz_parser, "userptr", strlen( "userptr" ) ) )
901 p_sys->io = IO_METHOD_USERPTR;
902 psz_parser += strlen( "userptr" );
906 p_sys->io = strtol( psz_parser, &psz_parser, 0 );
909 else if( !strncmp( psz_parser, "width=",
910 strlen( "width=" ) ) )
913 strtol( psz_parser + strlen( "width=" ),
916 else if( !strncmp( psz_parser, "height=",
917 strlen( "height=" ) ) )
920 strtol( psz_parser + strlen( "height=" ),
923 else if( !strncmp( psz_parser, "controls-reset",
924 strlen( "controls-reset" ) ) )
926 var_SetBool( p_obj, "v4l2-controls-reset", true );
927 psz_parser += strlen( "controls-reset" );
930 else if( !strncmp( psz_parser, "brightness=",
931 strlen( "brightness=" ) ) )
933 var_SetInteger( p_obj, "brightness",
934 strtol( psz_parser + strlen( "brightness=" ),
937 else if( !strncmp( psz_parser, "contrast=",
938 strlen( "contrast=" ) ) )
940 var_SetInteger( p_obj, "contrast",
941 strtol( psz_parser + strlen( "contrast=" ),
944 else if( !strncmp( psz_parser, "saturation=",
945 strlen( "saturation=" ) ) )
947 var_SetInteger( p_obj, "saturation",
948 strtol( psz_parser + strlen( "saturation=" ),
951 else if( !strncmp( psz_parser, "hue=",
954 var_SetInteger( p_obj, "hue",
955 strtol( psz_parser + strlen( "hue=" ),
958 else if( !strncmp( psz_parser, "gamma=",
959 strlen( "gamma=" ) ) )
961 var_SetInteger( p_obj, "gamma",
962 strtol( psz_parser + strlen( "gamma=" ),
966 else if( !strncmp( psz_parser, "samplerate=",
967 strlen( "samplerate=" ) ) )
969 p_sys->i_sample_rate =
970 strtol( psz_parser + strlen( "samplerate=" ),
973 else if( !strncmp( psz_parser, "audio-method", strlen( "audio-method" ) ) )
975 p_sys->i_audio_method =
976 strtol( psz_parser + strlen( "audio-method" ),
979 else if( !strncmp( psz_parser, "stereo", strlen( "stereo" ) ) )
981 psz_parser += strlen( "stereo" );
982 p_sys->b_stereo = true;
984 else if( !strncmp( psz_parser, "mono", strlen( "mono" ) ) )
986 psz_parser += strlen( "mono" );
987 p_sys->b_stereo = false;
989 else if( !strncmp( psz_parser, "caching=", strlen( "caching=" ) ) )
991 p_sys->i_pts = strtol( psz_parser + strlen( "caching=" ),
994 else if( !strncmp( psz_parser, "tuner=", strlen( "tuner=" ) ) )
996 p_sys->i_cur_tuner = strtol( psz_parser + strlen( "tuner=" ),
999 else if( !strncmp( psz_parser, "tuner-frequency=", strlen( "tuner-frequency=" ) ) )
1001 p_sys->i_frequency = strtol( psz_parser
1002 + strlen( "tuner-frequency=" ),
1005 else if( !strncmp( psz_parser, "tuner-audio-mode=", strlen( "tuner-audio-mode=" ) ) )
1007 p_sys->i_audio_mode = strtol( psz_parser
1008 + strlen( "tuner-audio-mode=" ),
1011 else if( !strncmp( psz_parser, "set-ctrls=", strlen( "set-ctrls=" )) )
1015 psz_parser += strlen( "set-ctrls=" );
1016 if( strchr( psz_parser, ':' ) )
1018 i_len = strchr( psz_parser, ':' ) - psz_parser;
1022 i_len = strlen( psz_parser );
1025 p_sys->psz_set_ctrls = strndup( psz_parser, i_len );
1027 psz_parser += i_len;
1031 char *psz_unk = strchr( psz_parser, ':' );
1033 psz_unk = strndup( psz_parser, psz_unk - psz_parser );
1035 psz_unk = strdup( psz_parser);
1036 msg_Warn( p_obj, "unknown option %s", psz_unk );
1040 while( *psz_parser && *psz_parser != ':' )
1045 if( *psz_parser == '\0' )
1055 p_sys->psz_device = strdup( psz_dup );
1060 /*****************************************************************************
1061 * Close: close device, free resources
1062 *****************************************************************************/
1063 static void AccessClose( vlc_object_t *p_this )
1065 access_t *p_access = (access_t *)p_this;
1066 demux_sys_t *p_sys = (demux_sys_t *) p_access->p_sys;
1068 CommonClose( p_this, p_sys );
1071 static void DemuxClose( vlc_object_t *p_this )
1073 struct v4l2_buffer buf;
1074 enum v4l2_buf_type buf_type;
1077 demux_t *p_demux = (demux_t *)p_this;
1078 demux_sys_t *p_sys = p_demux->p_sys;
1080 /* Stop video capture */
1081 if( p_sys->i_fd_video >= 0 )
1085 case IO_METHOD_READ:
1089 case IO_METHOD_MMAP:
1090 case IO_METHOD_USERPTR:
1091 /* Some drivers 'hang' internally if this is not done before streamoff */
1092 for( unsigned int i = 0; i < p_sys->i_nbuffers; i++ )
1094 memset( &buf, 0, sizeof(buf) );
1095 buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1096 buf.memory = ( p_sys->io == IO_METHOD_USERPTR ) ?
1097 V4L2_MEMORY_USERPTR : V4L2_MEMORY_MMAP;
1098 ioctl( p_sys->i_fd_video, VIDIOC_DQBUF, &buf ); /* ignore result */
1101 buf_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1102 if( ioctl( p_sys->i_fd_video, VIDIOC_STREAMOFF, &buf_type ) < 0 ) {
1103 msg_Err( p_this, "VIDIOC_STREAMOFF failed" );
1110 /* Free Video Buffers */
1111 if( p_sys->p_buffers ) {
1114 case IO_METHOD_READ:
1115 free( p_sys->p_buffers[0].start );
1118 case IO_METHOD_MMAP:
1119 for( i = 0; i < p_sys->i_nbuffers; ++i )
1121 if( munmap( p_sys->p_buffers[i].start, p_sys->p_buffers[i].length ) )
1123 msg_Err( p_this, "munmap failed" );
1128 case IO_METHOD_USERPTR:
1129 for( i = 0; i < p_sys->i_nbuffers; ++i )
1131 free( p_sys->p_buffers[i].start );
1135 free( p_sys->p_buffers );
1138 CommonClose( p_this, p_sys );
1141 static void CommonClose( vlc_object_t *p_this, demux_sys_t *p_sys )
1145 if( p_sys->i_fd_video >= 0 ) close( p_sys->i_fd_video );
1147 if( p_sys->p_alsa_pcm )
1149 snd_pcm_close( p_sys->p_alsa_pcm );
1150 p_sys->i_fd_audio = -1;
1153 if( p_sys->i_fd_audio >= 0 ) close( p_sys->i_fd_audio );
1155 if( p_sys->p_block_audio ) block_Release( p_sys->p_block_audio );
1156 free( p_sys->psz_device );
1157 free( p_sys->psz_vdev );
1158 free( p_sys->psz_adev );
1159 free( p_sys->p_standards );
1160 free( p_sys->p_inputs );
1161 free( p_sys->p_tuners );
1162 free( p_sys->p_codecs );
1163 free( p_sys->psz_requested_chroma );
1164 free( p_sys->psz_set_ctrls );
1169 /*****************************************************************************
1170 * AccessOpen: opens v4l2 device, access callback
1171 *****************************************************************************
1173 * url: <video device>::::
1175 *****************************************************************************/
1176 static int AccessOpen( vlc_object_t * p_this )
1178 access_t *p_access = (access_t*) p_this;
1179 demux_sys_t * p_sys;
1181 /* Only when selected */
1182 if( *p_access->psz_access == '\0' ) return VLC_EGENERIC;
1184 p_access->pf_read = AccessRead;
1185 p_access->pf_block = NULL;
1186 p_access->pf_seek = NULL;
1187 p_access->pf_control = AccessControl;
1188 p_access->info.i_update = 0;
1189 p_access->info.i_size = 0;
1190 p_access->info.i_pos = 0;
1191 p_access->info.b_eof = false;
1192 p_access->info.i_title = 0;
1193 p_access->info.i_seekpoint = 0;
1195 p_sys = calloc( 1, sizeof( demux_sys_t ) );
1196 p_access->p_sys = (access_sys_t *) p_sys;
1197 if( p_sys == NULL ) return VLC_ENOMEM;
1199 GetV4L2Params( p_sys, (vlc_object_t *) p_access );
1201 ParseMRL( p_sys, p_access->psz_path, (vlc_object_t *) p_access );
1203 if( FindMainDevice( p_this, p_sys, FIND_VIDEO,
1204 false, !strncmp( p_access->psz_access, "v4l2", 4 ) ) != VLC_SUCCESS )
1206 AccessClose( p_this );
1207 return VLC_EGENERIC;
1213 /*****************************************************************************
1215 *****************************************************************************/
1216 static int DemuxControl( demux_t *p_demux, int i_query, va_list args )
1218 demux_sys_t *p_sys = p_demux->p_sys;
1224 /* Special for access_demux */
1225 case DEMUX_CAN_PAUSE:
1226 case DEMUX_CAN_SEEK:
1227 case DEMUX_SET_PAUSE_STATE:
1228 case DEMUX_CAN_CONTROL_PACE:
1229 pb = (bool*)va_arg( args, bool * );
1233 case DEMUX_GET_PTS_DELAY:
1234 pi64 = (int64_t*)va_arg( args, int64_t * );
1235 *pi64 = (int64_t)p_sys->i_pts * 1000;
1238 case DEMUX_GET_TIME:
1239 pi64 = (int64_t*)va_arg( args, int64_t * );
1243 /* TODO implement others */
1245 return VLC_EGENERIC;
1248 return VLC_EGENERIC;
1251 /*****************************************************************************
1252 * AccessControl: access callback
1253 *****************************************************************************/
1254 static int AccessControl( access_t *p_access, int i_query, va_list args )
1259 demux_sys_t *p_sys = (demux_sys_t *) p_access->p_sys;
1264 case ACCESS_CAN_SEEK:
1265 case ACCESS_CAN_FASTSEEK:
1266 pb_bool = (bool*)va_arg( args, bool* );
1269 case ACCESS_CAN_PAUSE:
1270 pb_bool = (bool*)va_arg( args, bool* );
1273 case ACCESS_CAN_CONTROL_PACE:
1274 pb_bool = (bool*)va_arg( args, bool* );
1279 case ACCESS_GET_MTU:
1280 pi_int = (int*)va_arg( args, int * );
1284 case ACCESS_GET_PTS_DELAY:
1285 pi_64 = (int64_t*)va_arg( args, int64_t * );
1286 *pi_64 = (int64_t) p_sys->i_pts * 1000;
1290 case ACCESS_SET_PAUSE_STATE:
1294 case ACCESS_GET_TITLE_INFO:
1295 case ACCESS_SET_TITLE:
1296 case ACCESS_SET_SEEKPOINT:
1297 case ACCESS_SET_PRIVATE_ID_STATE:
1298 case ACCESS_GET_CONTENT_TYPE:
1299 case ACCESS_GET_META:
1300 return VLC_EGENERIC;
1303 msg_Warn( p_access, "Unimplemented query in control(%d).", i_query);
1304 return VLC_EGENERIC;
1310 /*****************************************************************************
1311 * AccessRead: access callback
1312 ******************************************************************************/
1313 static ssize_t AccessRead( access_t * p_access, uint8_t * p_buffer, size_t i_len )
1315 demux_sys_t *p_sys = (demux_sys_t *) p_access->p_sys;
1319 ufd.fd = p_sys->i_fd_video;
1320 ufd.events = POLLIN;
1322 if( p_access->info.b_eof )
1327 if( !vlc_object_alive (p_access) )
1332 while( ( i_ret = poll( &ufd, 1, 500 ) ) == 0 );
1336 msg_Err( p_access, "Polling error (%m)." );
1340 i_ret = read( p_sys->i_fd_video, p_buffer, i_len );
1343 p_access->info.b_eof = true;
1345 else if( i_ret > 0 )
1347 p_access->info.i_pos += i_ret;
1353 /*****************************************************************************
1354 * Demux: Processes the audio or video frame
1355 *****************************************************************************/
1356 static int Demux( demux_t *p_demux )
1358 demux_sys_t *p_sys = p_demux->p_sys;
1359 es_out_id_t *p_es = p_sys->p_es_audio;
1360 block_t *p_block = NULL;
1362 /* Try grabbing audio frames first */
1363 if( p_sys->i_fd_audio < 0 || !( p_block = GrabAudio( p_demux ) ) )
1365 /* Try grabbing video frame */
1366 p_es = p_sys->p_es_video;
1367 if( p_sys->i_fd_video > 0 ) p_block = GrabVideo( p_demux );
1372 /* Sleep so we do not consume all the cpu, 10ms seems
1373 * like a good value (100fps) */
1378 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_block->i_pts );
1379 es_out_Send( p_demux->out, p_es, p_block );
1384 /*****************************************************************************
1385 * GrabVideo: Grab a video frame
1386 *****************************************************************************/
1387 static block_t* GrabVideo( demux_t *p_demux )
1389 demux_sys_t *p_sys = p_demux->p_sys;
1391 block_t *p_block = NULL;
1392 struct v4l2_buffer buf;
1395 if( p_sys->f_fps >= 0.1 && p_sys->i_video_pts > 0 )
1397 mtime_t i_dur = (mtime_t)((double)1000000 / (double)p_sys->f_fps);
1399 /* Did we wait long enough ? (frame rate reduction) */
1400 if( p_sys->i_video_pts + i_dur > mdate() ) return 0;
1403 /* Grab Video Frame */
1406 case IO_METHOD_READ:
1407 i_ret = read( p_sys->i_fd_video, p_sys->p_buffers[0].start, p_sys->p_buffers[0].length );
1415 /* Could ignore EIO, see spec. */
1418 msg_Err( p_demux, "Failed to read frame" );
1423 p_block = ProcessVideoFrame( p_demux, (uint8_t*)p_sys->p_buffers[0].start, i_ret );
1424 if( !p_block ) return 0;
1428 case IO_METHOD_MMAP:
1429 memset( &buf, 0, sizeof(buf) );
1430 buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1431 buf.memory = V4L2_MEMORY_MMAP;
1433 /* Wait for next frame */
1434 if (ioctl( p_sys->i_fd_video, VIDIOC_DQBUF, &buf ) < 0 )
1441 /* Could ignore EIO, see spec. */
1444 msg_Err( p_demux, "Failed to wait (VIDIOC_DQBUF)" );
1449 if( buf.index >= p_sys->i_nbuffers ) {
1450 msg_Err( p_demux, "Failed capturing new frame as i>=nbuffers" );
1454 p_block = ProcessVideoFrame( p_demux, p_sys->p_buffers[buf.index].start, buf.bytesused );
1455 if( !p_block ) return 0;
1458 if( ioctl( p_sys->i_fd_video, VIDIOC_QBUF, &buf ) < 0 )
1460 msg_Err (p_demux, "Failed to unlock (VIDIOC_QBUF)");
1466 case IO_METHOD_USERPTR:
1467 memset( &buf, 0, sizeof(buf) );
1468 buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1469 buf.memory = V4L2_MEMORY_USERPTR;
1471 /* Wait for next frame */
1472 if (ioctl( p_sys->i_fd_video, VIDIOC_DQBUF, &buf ) < 0 )
1479 /* Could ignore EIO, see spec. */
1482 msg_Err( p_demux, "Failed to wait (VIDIOC_DQBUF)" );
1489 for( i = 0; i < p_sys->i_nbuffers; i++ )
1491 if( buf.m.userptr == (unsigned long)p_sys->p_buffers[i].start &&
1492 buf.length == p_sys->p_buffers[i].length ) break;
1495 if( i >= p_sys->i_nbuffers )
1497 msg_Err( p_demux, "Failed capturing new frame as i>=nbuffers" );
1501 p_block = ProcessVideoFrame( p_demux, (uint8_t*)buf.m.userptr, buf.bytesused );
1502 if( !p_block ) return 0;
1505 if( ioctl( p_sys->i_fd_video, VIDIOC_QBUF, &buf ) < 0 )
1507 msg_Err (p_demux, "Failed to unlock (VIDIOC_QBUF)");
1516 p_sys->i_video_pts = p_block->i_pts = p_block->i_dts = mdate();
1521 /*****************************************************************************
1522 * ProcessVideoFrame: Helper function to take a buffer and copy it into
1524 *****************************************************************************/
1525 static block_t* ProcessVideoFrame( demux_t *p_demux, uint8_t *p_frame, size_t i_size )
1529 if( !p_frame ) return 0;
1532 if( !( p_block = block_New( p_demux, i_size ) ) )
1534 msg_Warn( p_demux, "Cannot get new block" );
1539 memcpy( p_block->p_buffer, p_frame, i_size );
1544 /*****************************************************************************
1545 * GrabAudio: Grab an audio frame
1546 *****************************************************************************/
1547 static block_t* GrabAudio( demux_t *p_demux )
1549 demux_sys_t *p_sys = p_demux->p_sys;
1550 struct audio_buf_info buf_info;
1551 int i_read = 0, i_correct;
1554 if( p_sys->p_block_audio ) p_block = p_sys->p_block_audio;
1555 else p_block = block_New( p_demux, p_sys->i_audio_max_frame_size );
1559 msg_Warn( p_demux, "cannot get block" );
1563 p_sys->p_block_audio = p_block;
1566 if( p_sys->i_audio_method & AUDIO_METHOD_ALSA )
1569 i_read = snd_pcm_readi( p_sys->p_alsa_pcm, p_block->p_buffer, p_sys->i_alsa_chunk_size );
1579 snd_pcm_prepare( p_sys->p_alsa_pcm );
1583 i_resume = snd_pcm_resume( p_sys->p_alsa_pcm );
1584 if( i_resume < 0 && i_resume != -EAGAIN ) snd_pcm_prepare( p_sys->p_alsa_pcm );
1587 msg_Err( p_demux, "Failed to read alsa frame (%s)", snd_strerror( i_read ) );
1593 /* convert from frames to bytes */
1594 i_read *= p_sys->i_alsa_frame_size;
1599 if( p_sys->i_audio_method & AUDIO_METHOD_OSS )
1602 i_read = read( p_sys->i_fd_audio, p_block->p_buffer,
1603 p_sys->i_audio_max_frame_size );
1606 if( i_read <= 0 ) return 0;
1608 p_block->i_buffer = i_read;
1609 p_sys->p_block_audio = 0;
1611 /* Correct the date because of kernel buffering */
1613 if( p_sys->i_audio_method & AUDIO_METHOD_OSS )
1616 if( ioctl( p_sys->i_fd_audio, SNDCTL_DSP_GETISPACE, &buf_info ) == 0 )
1618 i_correct += buf_info.bytes;
1622 else if( p_sys->i_audio_method & AUDIO_METHOD_ALSA )
1626 snd_pcm_sframes_t delay = 0;
1627 if( ( i_err = snd_pcm_delay( p_sys->p_alsa_pcm, &delay ) ) >= 0 )
1629 size_t i_correction_delta = delay * p_sys->i_alsa_frame_size;
1630 /* Test for overrun */
1631 if( i_correction_delta > p_sys->i_audio_max_frame_size )
1633 msg_Warn( p_demux, "ALSA read overrun (%zu > %zu)",
1634 i_correction_delta, p_sys->i_audio_max_frame_size );
1635 i_correction_delta = p_sys->i_audio_max_frame_size;
1636 snd_pcm_prepare( p_sys->p_alsa_pcm );
1638 i_correct += i_correction_delta;
1642 /* delay failed so reset */
1643 msg_Warn( p_demux, "ALSA snd_pcm_delay failed (%s)", snd_strerror( i_err ) );
1644 snd_pcm_prepare( p_sys->p_alsa_pcm );
1650 p_block->i_pts = p_block->i_dts =
1651 mdate() - INT64_C(1000000) * (mtime_t)i_correct /
1652 2 / ( p_sys->b_stereo ? 2 : 1) / p_sys->i_sample_rate;
1657 /*****************************************************************************
1658 * Helper function to initalise video IO using the Read method
1659 *****************************************************************************/
1660 static int InitRead( demux_t *p_demux, int i_fd, unsigned int i_buffer_size )
1662 demux_sys_t *p_sys = p_demux->p_sys;
1664 p_sys->p_buffers = calloc( 1, sizeof( *p_sys->p_buffers ) );
1665 if( !p_sys->p_buffers )
1668 p_sys->p_buffers[0].length = i_buffer_size;
1669 p_sys->p_buffers[0].start = malloc( i_buffer_size );
1670 if( !p_sys->p_buffers[0].start )
1676 return VLC_EGENERIC;
1680 /*****************************************************************************
1681 * Helper function to initalise video IO using the mmap method
1682 *****************************************************************************/
1683 static int InitMmap( demux_t *p_demux, int i_fd )
1685 demux_sys_t *p_sys = p_demux->p_sys;
1686 struct v4l2_requestbuffers req;
1688 memset( &req, 0, sizeof(req) );
1690 req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1691 req.memory = V4L2_MEMORY_MMAP;
1693 if( ioctl( i_fd, VIDIOC_REQBUFS, &req ) < 0 )
1695 msg_Err( p_demux, "device does not support mmap i/o" );
1701 msg_Err( p_demux, "Insufficient buffer memory" );
1705 p_sys->p_buffers = calloc( req.count, sizeof( *p_sys->p_buffers ) );
1706 if( !p_sys->p_buffers )
1708 msg_Err( p_demux, "Out of memory" );
1712 for( p_sys->i_nbuffers = 0; p_sys->i_nbuffers < req.count; ++p_sys->i_nbuffers )
1714 struct v4l2_buffer buf;
1716 memset( &buf, 0, sizeof(buf) );
1717 buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1718 buf.memory = V4L2_MEMORY_MMAP;
1719 buf.index = p_sys->i_nbuffers;
1721 if( ioctl( i_fd, VIDIOC_QUERYBUF, &buf ) < 0 )
1723 msg_Err( p_demux, "VIDIOC_QUERYBUF" );
1727 p_sys->p_buffers[p_sys->i_nbuffers].length = buf.length;
1728 p_sys->p_buffers[p_sys->i_nbuffers].start =
1729 mmap( NULL, buf.length, PROT_READ | PROT_WRITE, MAP_SHARED, i_fd, buf.m.offset );
1731 if( p_sys->p_buffers[p_sys->i_nbuffers].start == MAP_FAILED )
1733 msg_Err( p_demux, "mmap failed (%m)" );
1741 return VLC_EGENERIC;
1745 /*****************************************************************************
1746 * Helper function to initalise video IO using the userbuf method
1747 *****************************************************************************/
1748 static int InitUserP( demux_t *p_demux, int i_fd, unsigned int i_buffer_size )
1750 demux_sys_t *p_sys = p_demux->p_sys;
1751 struct v4l2_requestbuffers req;
1752 unsigned int i_page_size;
1754 i_page_size = sysconf(_SC_PAGESIZE);
1755 i_buffer_size = ( i_buffer_size + i_page_size - 1 ) & ~( i_page_size - 1);
1757 memset( &req, 0, sizeof(req) );
1759 req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1760 req.memory = V4L2_MEMORY_USERPTR;
1762 if( ioctl( i_fd, VIDIOC_REQBUFS, &req ) < 0 )
1764 msg_Err( p_demux, "device does not support user pointer i/o" );
1765 return VLC_EGENERIC;
1768 p_sys->p_buffers = calloc( 4, sizeof( *p_sys->p_buffers ) );
1769 if( !p_sys->p_buffers )
1772 for( p_sys->i_nbuffers = 0; p_sys->i_nbuffers < 4; ++p_sys->i_nbuffers )
1774 p_sys->p_buffers[p_sys->i_nbuffers].length = i_buffer_size;
1775 if( posix_memalign( &p_sys->p_buffers[p_sys->i_nbuffers].start,
1776 /* boundary */ i_page_size, i_buffer_size ) )
1783 free( p_sys->p_buffers );
1784 return VLC_EGENERIC;
1788 /*****************************************************************************
1789 * IsPixelFormatSupported: returns true if the specified V4L2 pixel format is
1790 * in the array of supported formats returned by the driver
1791 *****************************************************************************/
1792 static bool IsPixelFormatSupported( demux_t *p_demux, unsigned int i_pixelformat )
1794 demux_sys_t *p_sys = p_demux->p_sys;
1796 for( int i_index = 0; i_index < p_sys->i_codec; i_index++ )
1798 if( p_sys->p_codecs[i_index].pixelformat == i_pixelformat )
1805 /*****************************************************************************
1806 * OpenVideoDev: open and set up the video device and probe for capabilities
1807 *****************************************************************************/
1808 static int OpenVideoDev( vlc_object_t *p_obj, demux_sys_t *p_sys, bool b_demux )
1811 struct v4l2_cropcap cropcap;
1812 struct v4l2_crop crop;
1813 struct v4l2_format fmt;
1815 enum v4l2_buf_type buf_type;
1816 char *psz_device = p_sys->psz_vdev;
1818 if( ( i_fd = open( psz_device, O_RDWR ) ) < 0 )
1820 msg_Err( p_obj, "cannot open device (%m)" );
1824 /* Tune the tuner */
1825 if( p_sys->i_frequency >= 0 )
1827 if( p_sys->i_cur_tuner < 0 || p_sys->i_cur_tuner >= p_sys->i_tuner )
1829 msg_Err( p_obj, "invalid tuner %d.", p_sys->i_cur_tuner );
1832 struct v4l2_frequency frequency;
1833 memset( &frequency, 0, sizeof( frequency ) );
1834 frequency.tuner = p_sys->i_cur_tuner;
1835 frequency.type = p_sys->p_tuners[p_sys->i_cur_tuner].type;
1836 frequency.frequency = p_sys->i_frequency / 62.5;
1837 if( ioctl( i_fd, VIDIOC_S_FREQUENCY, &frequency ) < 0 )
1839 msg_Err( p_obj, "cannot set tuner frequency (%m)" );
1842 msg_Dbg( p_obj, "Tuner frequency set" );
1845 /* Set the tuner's audio mode */
1846 if( p_sys->i_audio_mode >= 0 )
1848 if( p_sys->i_cur_tuner < 0 || p_sys->i_cur_tuner >= p_sys->i_tuner )
1850 msg_Err( p_obj, "invalid tuner %d.", p_sys->i_cur_tuner );
1853 struct v4l2_tuner tuner;
1854 memset( &tuner, 0, sizeof( tuner ) );
1855 tuner.index = p_sys->i_cur_tuner;
1856 tuner.audmode = p_sys->i_audio_mode;
1857 if( ioctl( i_fd, VIDIOC_S_TUNER, &tuner ) < 0 )
1859 msg_Err( p_obj, "cannot set tuner audio mode (%m)" );
1862 msg_Dbg( p_obj, "Tuner audio mode set" );
1865 /* Select standard */
1867 if( p_sys->i_selected_standard_id != V4L2_STD_UNKNOWN )
1869 if( ioctl( i_fd, VIDIOC_S_STD, &p_sys->i_selected_standard_id ) < 0 )
1871 msg_Err( p_obj, "cannot set standard (%m)" );
1874 msg_Dbg( p_obj, "Set standard" );
1879 if( p_sys->i_selected_input >= p_sys->i_input )
1881 msg_Warn( p_obj, "invalid input. Using the default one" );
1882 p_sys->i_selected_input = 0;
1885 if( ioctl( i_fd, VIDIOC_S_INPUT, &p_sys->i_selected_input ) < 0 )
1887 msg_Err( p_obj, "cannot set input (%m)" );
1891 /* Set audio input */
1893 if( p_sys->i_audio > 0 )
1895 if( p_sys->i_selected_audio_input < 0
1896 || p_sys->i_selected_audio_input >= p_sys->i_audio )
1898 msg_Warn( p_obj, "invalid audio input. Using the default one" );
1899 p_sys->i_selected_audio_input = 0;
1902 if( ioctl( i_fd, VIDIOC_S_AUDIO, &p_sys->p_audios[p_sys->i_selected_audio_input] ) < 0 )
1904 msg_Err( p_obj, "cannot set audio input (%m)" );
1907 msg_Dbg( p_obj, "Audio input set to %d", p_sys->i_selected_audio_input );
1911 /* TODO: Move the resolution stuff up here */
1912 /* if MPEG encoder card, no need to do anything else after this */
1913 ControlList( p_obj, i_fd,
1914 var_GetBool( p_obj, "v4l2-controls-reset" ), b_demux );
1915 SetAvailControlsByString( p_obj, p_sys, i_fd );
1916 if( false == b_demux)
1921 demux_t *p_demux = (demux_t *) p_obj;
1923 /* Verify device support for the various IO methods */
1926 case IO_METHOD_READ:
1927 if( !(p_sys->dev_cap.capabilities & V4L2_CAP_READWRITE) )
1929 msg_Err( p_demux, "device does not support read i/o" );
1934 case IO_METHOD_MMAP:
1935 case IO_METHOD_USERPTR:
1936 if( !(p_sys->dev_cap.capabilities & V4L2_CAP_STREAMING) )
1938 msg_Err( p_demux, "device does not support streaming i/o" );
1944 msg_Err( p_demux, "io method not supported" );
1948 /* Reset Cropping */
1949 memset( &cropcap, 0, sizeof(cropcap) );
1950 cropcap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1951 if( ioctl( i_fd, VIDIOC_CROPCAP, &cropcap ) >= 0 )
1953 crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1954 crop.c = cropcap.defrect; /* reset to default */
1955 if( ioctl( i_fd, VIDIOC_S_CROP, &crop ) < 0 )
1960 /* Cropping not supported. */
1963 /* Errors ignored. */
1969 /* Try and find default resolution if not specified */
1970 memset( &fmt, 0, sizeof(fmt) );
1971 fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1973 if( p_sys->i_width <= 0 || p_sys->i_height <= 0 )
1975 if( ioctl( i_fd, VIDIOC_G_FMT, &fmt ) < 0 )
1977 msg_Err( p_demux, "Cannot get default width and height." );
1981 p_sys->i_width = fmt.fmt.pix.width;
1982 p_sys->i_height = fmt.fmt.pix.height;
1984 if( fmt.fmt.pix.field == V4L2_FIELD_ALTERNATE )
1986 p_sys->i_height = p_sys->i_height * 2;
1991 msg_Dbg( p_demux, "trying specified size %dx%d", p_sys->i_width, p_sys->i_height );
1994 fmt.fmt.pix.width = p_sys->i_width;
1995 fmt.fmt.pix.height = p_sys->i_height;
1996 fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
1998 /* Test and set Chroma */
1999 fmt.fmt.pix.pixelformat = 0;
2000 if( p_sys->psz_requested_chroma && strlen( p_sys->psz_requested_chroma ) > 0 )
2002 /* User specified chroma */
2003 if( strlen( p_sys->psz_requested_chroma ) >= 4 )
2005 int i_requested_fourcc = VLC_FOURCC(
2006 p_sys->psz_requested_chroma[0], p_sys->psz_requested_chroma[1],
2007 p_sys->psz_requested_chroma[2], p_sys->psz_requested_chroma[3] );
2008 for( int i = 0; v4l2chroma_to_fourcc[i].i_v4l2 != 0; i++ )
2010 if( v4l2chroma_to_fourcc[i].i_fourcc == i_requested_fourcc )
2012 fmt.fmt.pix.pixelformat = v4l2chroma_to_fourcc[i].i_v4l2;
2017 /* Try and set user chroma */
2018 if( !IsPixelFormatSupported( p_demux, fmt.fmt.pix.pixelformat ) || ( fmt.fmt.pix.pixelformat && ioctl( i_fd, VIDIOC_S_FMT, &fmt ) < 0 ) )
2020 msg_Warn( p_demux, "Driver is unable to use specified chroma %s. Trying defaults.", p_sys->psz_requested_chroma );
2021 fmt.fmt.pix.pixelformat = 0;
2025 /* If no user specified chroma, find best */
2026 /* This also decides if MPEG encoder card or not */
2027 if( !fmt.fmt.pix.pixelformat )
2030 for( i = 0; i < ARRAY_SIZE( p_chroma_fallbacks ); i++ )
2032 fmt.fmt.pix.pixelformat = p_chroma_fallbacks[i];
2033 if( IsPixelFormatSupported( p_demux, fmt.fmt.pix.pixelformat )
2034 && ioctl( i_fd, VIDIOC_S_FMT, &fmt ) >= 0 )
2037 if( i == ARRAY_SIZE( p_chroma_fallbacks ) )
2039 msg_Warn( p_demux, "Could not select any of the default chromas; attempting to open as MPEG encoder card (access)" );
2044 /* Reassign width, height and chroma incase driver override */
2045 p_sys->i_width = fmt.fmt.pix.width;
2046 p_sys->i_height = fmt.fmt.pix.height;
2048 /* Look up final fourcc */
2049 p_sys->i_fourcc = 0;
2050 for( int i = 0; v4l2chroma_to_fourcc[i].i_fourcc != 0; i++ )
2052 if( v4l2chroma_to_fourcc[i].i_v4l2 == fmt.fmt.pix.pixelformat )
2054 p_sys->i_fourcc = v4l2chroma_to_fourcc[i].i_fourcc;
2059 /* Buggy driver paranoia */
2060 i_min = fmt.fmt.pix.width * 2;
2061 if( fmt.fmt.pix.bytesperline < i_min )
2062 fmt.fmt.pix.bytesperline = i_min;
2063 i_min = fmt.fmt.pix.bytesperline * fmt.fmt.pix.height;
2064 if( fmt.fmt.pix.sizeimage < i_min )
2065 fmt.fmt.pix.sizeimage = i_min;
2067 #ifdef VIDIOC_ENUM_FRAMEINTERVALS
2068 /* This is new in Linux 2.6.19 */
2069 /* List supported frame rates */
2070 struct v4l2_frmivalenum frmival;
2072 frmival.pixel_format = fmt.fmt.pix.pixelformat;
2073 frmival.width = p_sys->i_width;
2074 frmival.height = p_sys->i_height;
2075 if( ioctl( i_fd, VIDIOC_ENUM_FRAMEINTERVALS, &frmival ) >= 0 )
2078 memset( &psz_fourcc, 0, sizeof( psz_fourcc ) );
2079 vlc_fourcc_to_char( p_sys->i_fourcc, &psz_fourcc );
2080 msg_Dbg( p_demux, "supported frame intervals for %4s, %dx%d:",
2081 psz_fourcc, frmival.width, frmival.height );
2082 switch( frmival.type )
2084 case V4L2_FRMIVAL_TYPE_DISCRETE:
2087 msg_Dbg( p_demux, " supported frame interval: %d/%d",
2088 frmival.discrete.numerator,
2089 frmival.discrete.denominator );
2091 } while( ioctl( i_fd, VIDIOC_ENUM_FRAMEINTERVALS, &frmival ) >= 0 );
2093 case V4L2_FRMIVAL_TYPE_STEPWISE:
2094 msg_Dbg( p_demux, " supported frame intervals: %d/%d to "
2095 "%d/%d using %d/%d increments",
2096 frmival.stepwise.min.numerator,
2097 frmival.stepwise.min.denominator,
2098 frmival.stepwise.max.numerator,
2099 frmival.stepwise.max.denominator,
2100 frmival.stepwise.step.numerator,
2101 frmival.stepwise.step.denominator );
2103 case V4L2_FRMIVAL_TYPE_CONTINUOUS:
2104 msg_Dbg( p_demux, " supported frame intervals: %d/%d to %d/%d",
2105 frmival.stepwise.min.numerator,
2106 frmival.stepwise.min.denominator,
2107 frmival.stepwise.max.numerator,
2108 frmival.stepwise.max.denominator );
2114 /* Init IO method */
2117 case IO_METHOD_READ:
2118 if( InitRead( p_demux, i_fd, fmt.fmt.pix.sizeimage ) != VLC_SUCCESS ) goto open_failed;
2121 case IO_METHOD_MMAP:
2122 if( InitMmap( p_demux, i_fd ) != VLC_SUCCESS ) goto open_failed;
2125 case IO_METHOD_USERPTR:
2126 if( InitUserP( p_demux, i_fd, fmt.fmt.pix.sizeimage ) != VLC_SUCCESS ) goto open_failed;
2133 es_format_Init( &es_fmt, VIDEO_ES, p_sys->i_fourcc );
2134 es_fmt.video.i_width = p_sys->i_width;
2135 es_fmt.video.i_height = p_sys->i_height;
2136 es_fmt.video.i_aspect = 4 * VOUT_ASPECT_FACTOR / 3;
2138 /* Setup rgb mask for RGB formats */
2139 if( p_sys->i_fourcc == VLC_FOURCC( 'R','V','2','4' ) )
2141 /* This is in BGR format */
2142 es_fmt.video.i_bmask = 0x00ff0000;
2143 es_fmt.video.i_gmask = 0x0000ff00;
2144 es_fmt.video.i_rmask = 0x000000ff;
2147 msg_Dbg( p_demux, "added new video es %4.4s %dx%d",
2148 (char*)&es_fmt.i_codec, es_fmt.video.i_width, es_fmt.video.i_height );
2149 p_sys->p_es_video = es_out_Add( p_demux->out, &es_fmt );
2155 case IO_METHOD_READ:
2159 case IO_METHOD_MMAP:
2160 for (unsigned int i = 0; i < p_sys->i_nbuffers; ++i)
2162 struct v4l2_buffer buf;
2164 memset( &buf, 0, sizeof(buf) );
2165 buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2166 buf.memory = V4L2_MEMORY_MMAP;
2169 if( ioctl( i_fd, VIDIOC_QBUF, &buf ) < 0 )
2171 msg_Err( p_demux, "VIDIOC_QBUF failed" );
2176 buf_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2177 if( ioctl( i_fd, VIDIOC_STREAMON, &buf_type ) < 0 )
2179 msg_Err( p_demux, "VIDIOC_STREAMON failed" );
2185 case IO_METHOD_USERPTR:
2186 for( unsigned int i = 0; i < p_sys->i_nbuffers; ++i )
2188 struct v4l2_buffer buf;
2190 memset( &buf, 0, sizeof(buf) );
2191 buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2192 buf.memory = V4L2_MEMORY_USERPTR;
2194 buf.m.userptr = (unsigned long)p_sys->p_buffers[i].start;
2195 buf.length = p_sys->p_buffers[i].length;
2197 if( ioctl( i_fd, VIDIOC_QBUF, &buf ) < 0 )
2199 msg_Err( p_demux, "VIDIOC_QBUF failed" );
2204 buf_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2205 if( ioctl( i_fd, VIDIOC_STREAMON, &buf_type ) < 0 )
2207 msg_Err( p_demux, "VIDIOC_STREAMON failed" );
2215 if( p_sys->f_fps >= 0.1 )
2217 msg_Dbg( p_demux, "User set fps=%f", p_sys->f_fps );
2223 if( i_fd >= 0 ) close( i_fd );
2229 /*****************************************************************************
2230 * ResolveALSADeviceName: Change any . to : in the ALSA device name
2231 *****************************************************************************/
2232 static char *ResolveALSADeviceName( const char *psz_device )
2234 char* psz_alsa_name = strdup( psz_device );
2235 for( unsigned int i = 0; i < strlen( psz_device ); i++ )
2237 if( psz_alsa_name[i] == '.' ) psz_alsa_name[i] = ':';
2239 return psz_alsa_name;
2243 /*****************************************************************************
2244 * OpenAudioDev: open and set up the audio device and probe for capabilities
2245 *****************************************************************************/
2247 static int OpenAudioDevAlsa( vlc_object_t *p_this, demux_sys_t *p_sys,
2250 char *psz_device = p_sys->psz_adev;
2251 p_sys->p_alsa_pcm = NULL;
2252 char* psz_alsa_device_name = NULL;
2253 snd_pcm_hw_params_t *p_hw_params = NULL;
2254 snd_pcm_uframes_t buffer_size;
2255 snd_pcm_uframes_t chunk_size;
2259 psz_alsa_device_name =
2260 ResolveALSADeviceName( psz_device?: ALSA_DEFAULT );
2262 if( ( i_err = snd_pcm_open( &p_sys->p_alsa_pcm, psz_alsa_device_name,
2263 SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK ) ) < 0)
2265 msg_Err( p_this, "Cannot open ALSA audio device %s (%s)",
2266 psz_alsa_device_name, snd_strerror( i_err ) );
2270 if( ( i_err = snd_pcm_nonblock( p_sys->p_alsa_pcm, 1 ) ) < 0)
2272 msg_Err( p_this, "Cannot set ALSA nonblock (%s)",
2273 snd_strerror( i_err ) );
2277 /* Begin setting hardware parameters */
2279 if( ( i_err = snd_pcm_hw_params_malloc( &p_hw_params ) ) < 0 )
2282 "ALSA: cannot allocate hardware parameter structure (%s)",
2283 snd_strerror( i_err ) );
2287 if( ( i_err = snd_pcm_hw_params_any( p_sys->p_alsa_pcm, p_hw_params ) ) < 0 )
2290 "ALSA: cannot initialize hardware parameter structure (%s)",
2291 snd_strerror( i_err ) );
2295 /* Set Interleaved access */
2296 if( ( i_err = snd_pcm_hw_params_set_access( p_sys->p_alsa_pcm, p_hw_params, SND_PCM_ACCESS_RW_INTERLEAVED ) ) < 0 )
2298 msg_Err( p_this, "ALSA: cannot set access type (%s)",
2299 snd_strerror( i_err ) );
2303 /* Set 16 bit little endian */
2304 if( ( i_err = snd_pcm_hw_params_set_format( p_sys->p_alsa_pcm, p_hw_params, SND_PCM_FORMAT_S16_LE ) ) < 0 )
2306 msg_Err( p_this, "ALSA: cannot set sample format (%s)",
2307 snd_strerror( i_err ) );
2311 /* Set sample rate */
2312 #ifdef HAVE_ALSA_NEW_API
2313 i_err = snd_pcm_hw_params_set_rate_near( p_sys->p_alsa_pcm, p_hw_params, &p_sys->i_sample_rate, NULL );
2315 i_err = snd_pcm_hw_params_set_rate_near( p_sys->p_alsa_pcm, p_hw_params, p_sys->i_sample_rate, NULL );
2319 msg_Err( p_this, "ALSA: cannot set sample rate (%s)",
2320 snd_strerror( i_err ) );
2325 unsigned int channels = p_sys->b_stereo ? 2 : 1;
2326 if( ( i_err = snd_pcm_hw_params_set_channels( p_sys->p_alsa_pcm, p_hw_params, channels ) ) < 0 )
2328 channels = ( channels==1 ) ? 2 : 1;
2329 msg_Warn( p_this, "ALSA: cannot set channel count (%s). "
2330 "Trying with channels=%d",
2331 snd_strerror( i_err ),
2333 if( ( i_err = snd_pcm_hw_params_set_channels( p_sys->p_alsa_pcm, p_hw_params, channels ) ) < 0 )
2335 msg_Err( p_this, "ALSA: cannot set channel count (%s)",
2336 snd_strerror( i_err ) );
2339 p_sys->b_stereo = ( channels == 2 );
2342 /* Set metrics for buffer calculations later */
2343 unsigned int buffer_time;
2344 if( ( i_err = snd_pcm_hw_params_get_buffer_time_max(p_hw_params, &buffer_time, 0) ) < 0 )
2346 msg_Err( p_this, "ALSA: cannot get buffer time max (%s)",
2347 snd_strerror( i_err ) );
2350 if (buffer_time > 500000) buffer_time = 500000;
2352 /* Set period time */
2353 unsigned int period_time = buffer_time / 4;
2354 #ifdef HAVE_ALSA_NEW_API
2355 i_err = snd_pcm_hw_params_set_period_time_near( p_sys->p_alsa_pcm, p_hw_params, &period_time, 0 );
2357 i_err = snd_pcm_hw_params_set_period_time_near( p_sys->p_alsa_pcm, p_hw_params, period_time, 0 );
2361 msg_Err( p_this, "ALSA: cannot set period time (%s)",
2362 snd_strerror( i_err ) );
2366 /* Set buffer time */
2367 #ifdef HAVE_ALSA_NEW_API
2368 i_err = snd_pcm_hw_params_set_buffer_time_near( p_sys->p_alsa_pcm, p_hw_params, &buffer_time, 0 );
2370 i_err = snd_pcm_hw_params_set_buffer_time_near( p_sys->p_alsa_pcm, p_hw_params, buffer_time, 0 );
2374 msg_Err( p_this, "ALSA: cannot set buffer time (%s)",
2375 snd_strerror( i_err ) );
2379 /* Apply new hardware parameters */
2380 if( ( i_err = snd_pcm_hw_params( p_sys->p_alsa_pcm, p_hw_params ) ) < 0 )
2382 msg_Err( p_this, "ALSA: cannot set hw parameters (%s)",
2383 snd_strerror( i_err ) );
2387 /* Get various buffer metrics */
2388 snd_pcm_hw_params_get_period_size( p_hw_params, &chunk_size, 0 );
2389 snd_pcm_hw_params_get_buffer_size( p_hw_params, &buffer_size );
2390 if( chunk_size == buffer_size )
2393 "ALSA: period cannot equal buffer size (%lu == %lu)",
2394 chunk_size, buffer_size);
2398 int bits_per_sample = snd_pcm_format_physical_width(SND_PCM_FORMAT_S16_LE);
2399 int bits_per_frame = bits_per_sample * channels;
2401 p_sys->i_alsa_chunk_size = chunk_size;
2402 p_sys->i_alsa_frame_size = bits_per_frame / 8;
2403 p_sys->i_audio_max_frame_size = chunk_size * bits_per_frame / 8;
2405 snd_pcm_hw_params_free( p_hw_params );
2409 if( ( i_err = snd_pcm_prepare( p_sys->p_alsa_pcm ) ) < 0 )
2412 "ALSA: cannot prepare audio interface for use (%s)",
2413 snd_strerror( i_err ) );
2417 free( psz_alsa_device_name );
2419 if( !p_sys->psz_adev )
2420 p_sys->psz_adev = strdup( ALSA_DEFAULT );
2422 /* Return a fake handle so other tests work */
2427 if( p_hw_params ) snd_pcm_hw_params_free( p_hw_params );
2428 if( p_sys->p_alsa_pcm ) snd_pcm_close( p_sys->p_alsa_pcm );
2429 free( psz_alsa_device_name );
2436 static int OpenAudioDevOss( vlc_object_t *p_this, demux_sys_t *p_sys,
2442 char* psz_oss_device_name = strdup( p_sys->psz_adev ? p_sys->psz_adev : OSS_DEFAULT );
2444 if( (i_fd = open( psz_oss_device_name, O_RDONLY | O_NONBLOCK )) < 0 )
2446 msg_Err( p_this, "cannot open OSS audio device (%m)" );
2450 i_format = AFMT_S16_LE;
2451 if( ioctl( i_fd, SNDCTL_DSP_SETFMT, &i_format ) < 0
2452 || i_format != AFMT_S16_LE )
2455 "cannot set audio format (16b little endian) (%m)" );
2459 if( ioctl( i_fd, SNDCTL_DSP_STEREO,
2460 &p_sys->b_stereo ) < 0 )
2462 msg_Err( p_this, "cannot set audio channels count (%m)" );
2466 if( ioctl( i_fd, SNDCTL_DSP_SPEED,
2467 &p_sys->i_sample_rate ) < 0 )
2469 msg_Err( p_this, "cannot set audio sample rate (%m)" );
2473 p_sys->i_audio_max_frame_size = 6 * 1024;
2475 if( !p_sys->psz_adev )
2476 p_sys->psz_adev = strdup( OSS_DEFAULT );
2477 free( psz_oss_device_name );
2482 free( psz_oss_device_name );
2483 if( i_fd >= 0 ) close( i_fd );
2488 static int OpenAudioDev( vlc_object_t *p_this, demux_sys_t *p_sys,
2495 if( ( p_sys->i_audio_method & AUDIO_METHOD_ALSA ) && i_fd < 0 )
2496 i_fd = OpenAudioDevAlsa( p_this, p_sys, b_demux );
2499 if( ( p_sys->i_audio_method & AUDIO_METHOD_OSS ) && i_fd < 0 )
2500 i_fd = OpenAudioDevOss( p_this, p_sys, b_demux );
2505 psz_device = p_sys->psz_adev;
2507 msg_Dbg( p_this, "opened adev=`%s' %s %dHz",
2508 psz_device, p_sys->b_stereo ? "stereo" : "mono",
2509 p_sys->i_sample_rate );
2512 es_format_Init( &fmt, AUDIO_ES, VLC_FOURCC('a','r','a','w') );
2514 fmt.audio.i_channels = p_sys->b_stereo ? 2 : 1;
2515 fmt.audio.i_rate = p_sys->i_sample_rate;
2516 fmt.audio.i_bitspersample = 16;
2517 fmt.audio.i_blockalign = fmt.audio.i_channels * fmt.audio.i_bitspersample / 8;
2518 fmt.i_bitrate = fmt.audio.i_channels * fmt.audio.i_rate * fmt.audio.i_bitspersample;
2520 msg_Dbg( p_this, "new audio es %d channels %dHz",
2521 fmt.audio.i_channels, fmt.audio.i_rate );
2525 demux_t *p_demux = (demux_t *)p_this;
2526 p_sys->p_es_audio = es_out_Add( p_demux->out, &fmt );
2532 /*****************************************************************************
2533 * ProbeVideoDev: probe video for capabilities
2534 *****************************************************************************/
2535 static bool ProbeVideoDev( vlc_object_t *p_obj, demux_sys_t *p_sys,
2543 if( ( i_fd = open( psz_device, O_RDWR ) ) < 0 )
2545 msg_Err( p_obj, "cannot open video device (%m)" );
2549 /* Get device capabilites */
2551 if( ioctl( i_fd, VIDIOC_QUERYCAP, &p_sys->dev_cap ) < 0 )
2553 msg_Err( p_obj, "cannot get video capabilities (%m)" );
2557 msg_Dbg( p_obj, "V4L2 device: %s using driver: %s (version: %u.%u.%u) on %s",
2558 p_sys->dev_cap.card,
2559 p_sys->dev_cap.driver,
2560 (p_sys->dev_cap.version >> 16) & 0xFF,
2561 (p_sys->dev_cap.version >> 8) & 0xFF,
2562 p_sys->dev_cap.version & 0xFF,
2563 p_sys->dev_cap.bus_info );
2565 msg_Dbg( p_obj, "the device has the capabilities: (%c) Video Capure, "
2568 ( p_sys->dev_cap.capabilities & V4L2_CAP_VIDEO_CAPTURE ? 'X':' '),
2569 ( p_sys->dev_cap.capabilities & V4L2_CAP_AUDIO ? 'X':' '),
2570 ( p_sys->dev_cap.capabilities & V4L2_CAP_TUNER ? 'X':' ') );
2572 msg_Dbg( p_obj, "supported I/O methods are: (%c) Read/Write, "
2574 "(%c) Asynchronous",
2575 ( p_sys->dev_cap.capabilities & V4L2_CAP_READWRITE ? 'X':' ' ),
2576 ( p_sys->dev_cap.capabilities & V4L2_CAP_STREAMING ? 'X':' ' ),
2577 ( p_sys->dev_cap.capabilities & V4L2_CAP_ASYNCIO ? 'X':' ' ) );
2579 /* Now, enumerate all the video inputs. This is useless at the moment
2580 since we have no way to present that info to the user except with
2583 if( p_sys->dev_cap.capabilities & V4L2_CAP_VIDEO_CAPTURE )
2585 struct v4l2_input t_input;
2587 while( ioctl( i_fd, VIDIOC_ENUMINPUT, &t_input ) >= 0 )
2590 t_input.index = p_sys->i_input;
2593 p_sys->p_inputs = calloc( 1, p_sys->i_input * sizeof( struct v4l2_input ) );
2594 if( !p_sys->p_inputs ) goto open_failed;
2596 for( i_index = 0; i_index < p_sys->i_input; i_index++ )
2598 p_sys->p_inputs[i_index].index = i_index;
2600 if( ioctl( i_fd, VIDIOC_ENUMINPUT, &p_sys->p_inputs[i_index] ) )
2602 msg_Err( p_obj, "cannot get video input characteristics (%m)" );
2605 msg_Dbg( p_obj, "video input %i (%s) has type: %s %c",
2607 p_sys->p_inputs[i_index].name,
2608 p_sys->p_inputs[i_index].type
2609 == V4L2_INPUT_TYPE_TUNER ?
2611 "External analog input",
2612 i_index == p_sys->i_selected_input ? '*' : ' ' );
2616 /* Probe video standards */
2617 if( p_sys->dev_cap.capabilities & V4L2_CAP_VIDEO_CAPTURE )
2619 struct v4l2_standard t_standards;
2620 t_standards.index = 0;
2621 while( ioctl( i_fd, VIDIOC_ENUMSTD, &t_standards ) >=0 )
2623 p_sys->i_standard++;
2624 t_standards.index = p_sys->i_standard;
2627 p_sys->p_standards = calloc( 1, p_sys->i_standard * sizeof( struct v4l2_standard ) );
2628 if( !p_sys->p_standards ) goto open_failed;
2630 for( i_standard = 0; i_standard < p_sys->i_standard; i_standard++ )
2632 p_sys->p_standards[i_standard].index = i_standard;
2634 if( ioctl( i_fd, VIDIOC_ENUMSTD, &p_sys->p_standards[i_standard] ) )
2636 msg_Err( p_obj, "cannot get video input standards (%m)" );
2639 msg_Dbg( p_obj, "video standard %i is: %s %c",
2641 p_sys->p_standards[i_standard].name,
2642 (unsigned)i_standard == p_sys->i_selected_standard_id ? '*' : ' ' );
2646 /* initialize the structures for the ioctls */
2647 for( i_index = 0; i_index < 32; i_index++ )
2649 p_sys->p_audios[i_index].index = i_index;
2652 /* Probe audio inputs */
2653 if( p_sys->dev_cap.capabilities & V4L2_CAP_AUDIO )
2655 while( p_sys->i_audio < 32 &&
2656 ioctl( i_fd, VIDIOC_S_AUDIO, &p_sys->p_audios[p_sys->i_audio] ) >= 0 )
2658 if( ioctl( i_fd, VIDIOC_G_AUDIO, &p_sys->p_audios[ p_sys->i_audio] ) < 0 )
2660 msg_Err( p_obj, "cannot get audio input characteristics (%m)" );
2664 msg_Dbg( p_obj, "audio input %i (%s) is %s %s %c",
2666 p_sys->p_audios[p_sys->i_audio].name,
2667 p_sys->p_audios[p_sys->i_audio].capability &
2668 V4L2_AUDCAP_STEREO ?
2670 p_sys->p_audios[p_sys->i_audio].capability &
2672 "(Automatic Volume Level supported)" : "",
2673 p_sys->i_audio == p_sys->i_selected_audio_input ? '*' : ' ' );
2679 /* List tuner caps */
2680 if( p_sys->dev_cap.capabilities & V4L2_CAP_TUNER )
2682 struct v4l2_tuner tuner;
2683 memset( &tuner, 0, sizeof(tuner) );
2684 while( ioctl( i_fd, VIDIOC_G_TUNER, &tuner ) >= 0 )
2687 memset( &tuner, 0, sizeof(tuner) );
2688 tuner.index = p_sys->i_tuner;
2691 p_sys->p_tuners = calloc( 1, p_sys->i_tuner * sizeof( struct v4l2_tuner ) );
2692 if( !p_sys->p_tuners ) goto open_failed;
2694 for( i_index = 0; i_index < p_sys->i_tuner; i_index++ )
2696 p_sys->p_tuners[i_index].index = i_index;
2698 if( ioctl( i_fd, VIDIOC_G_TUNER, &p_sys->p_tuners[i_index] ) )
2700 msg_Err( p_obj, "cannot get tuner characteristics (%m)" );
2703 msg_Dbg( p_obj, "tuner %i (%s) has type: %s, "
2704 "frequency range: %.1f %s -> %.1f %s",
2706 p_sys->p_tuners[i_index].name,
2707 p_sys->p_tuners[i_index].type
2708 == V4L2_TUNER_RADIO ?
2709 "Radio" : "Analog TV",
2710 p_sys->p_tuners[i_index].rangelow * 62.5,
2711 p_sys->p_tuners[i_index].capability &
2712 V4L2_TUNER_CAP_LOW ?
2714 p_sys->p_tuners[i_index].rangehigh * 62.5,
2715 p_sys->p_tuners[i_index].capability &
2716 V4L2_TUNER_CAP_LOW ?
2719 struct v4l2_frequency frequency;
2720 memset( &frequency, 0, sizeof( frequency ) );
2721 if( ioctl( i_fd, VIDIOC_G_FREQUENCY, &frequency ) < 0 )
2723 msg_Err( p_obj, "cannot get tuner frequency (%m)" );
2726 msg_Dbg( p_obj, "tuner %i (%s) frequency: %.1f %s",
2728 p_sys->p_tuners[i_index].name,
2729 frequency.frequency * 62.5,
2730 p_sys->p_tuners[i_index].capability &
2731 V4L2_TUNER_CAP_LOW ?
2736 /* Probe for available chromas */
2737 if( p_sys->dev_cap.capabilities & V4L2_CAP_VIDEO_CAPTURE )
2739 struct v4l2_fmtdesc codec;
2742 memset( &codec, 0, sizeof(codec) );
2743 codec.index = i_index;
2744 codec.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2746 while( ioctl( i_fd, VIDIOC_ENUM_FMT, &codec ) >= 0 )
2749 codec.index = i_index;
2752 p_sys->i_codec = i_index;
2754 p_sys->p_codecs = calloc( 1, p_sys->i_codec * sizeof( struct v4l2_fmtdesc ) );
2756 for( i_index = 0; i_index < p_sys->i_codec; i_index++ )
2758 p_sys->p_codecs[i_index].index = i_index;
2759 p_sys->p_codecs[i_index].type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2761 if( ioctl( i_fd, VIDIOC_ENUM_FMT, &p_sys->p_codecs[i_index] ) < 0 )
2763 msg_Err( p_obj, "cannot get codec description (%m)" );
2767 /* only print if vlc supports the format */
2768 char psz_fourcc_v4l2[5];
2769 memset( &psz_fourcc_v4l2, 0, sizeof( psz_fourcc_v4l2 ) );
2770 vlc_fourcc_to_char( p_sys->p_codecs[i_index].pixelformat,
2772 bool b_codec_supported = false;
2773 for( int i = 0; v4l2chroma_to_fourcc[i].i_v4l2 != 0; i++ )
2775 if( v4l2chroma_to_fourcc[i].i_v4l2 == p_sys->p_codecs[i_index].pixelformat )
2777 b_codec_supported = true;
2780 memset( &psz_fourcc, 0, sizeof( psz_fourcc ) );
2781 vlc_fourcc_to_char( v4l2chroma_to_fourcc[i].i_fourcc,
2783 msg_Dbg( p_obj, "device supports chroma %4s [%s, %s]",
2785 p_sys->p_codecs[i_index].description,
2788 #ifdef VIDIOC_ENUM_FRAMESIZES
2789 /* This is new in Linux 2.6.19 */
2790 /* List valid frame sizes for this format */
2791 struct v4l2_frmsizeenum frmsize;
2793 frmsize.pixel_format = p_sys->p_codecs[i_index].pixelformat;
2794 if( ioctl( i_fd, VIDIOC_ENUM_FRAMESIZES, &frmsize ) < 0 )
2796 /* Not all devices support this ioctl */
2797 msg_Warn( p_obj, "Unable to query for frame sizes" );
2801 switch( frmsize.type )
2803 case V4L2_FRMSIZE_TYPE_DISCRETE:
2807 " device supports size %dx%d",
2808 frmsize.discrete.width, frmsize.discrete.height );
2810 } while( ioctl( i_fd, VIDIOC_ENUM_FRAMESIZES, &frmsize ) >= 0 );
2812 case V4L2_FRMSIZE_TYPE_STEPWISE:
2814 " device supports sizes %dx%d to %dx%d using %dx%d increments",
2815 frmsize.stepwise.min_width, frmsize.stepwise.min_height,
2816 frmsize.stepwise.max_width, frmsize.stepwise.max_height,
2817 frmsize.stepwise.step_width, frmsize.stepwise.step_height );
2819 case V4L2_FRMSIZE_TYPE_CONTINUOUS:
2821 " device supports all sizes %dx%d to %dx%d",
2822 frmsize.stepwise.min_width, frmsize.stepwise.min_height,
2823 frmsize.stepwise.max_width, frmsize.stepwise.max_height );
2830 if( !b_codec_supported )
2833 "device codec %4s (%s) not supported as access_demux",
2835 p_sys->p_codecs[i_index].description );
2842 if( i_fd >= 0 ) close( i_fd );
2847 if( i_fd >= 0 ) close( i_fd );
2852 /*****************************************************************************
2853 * ProbeAudioDev: probe audio for capabilities
2854 *****************************************************************************/
2856 static bool ProbeAudioDevAlsa( vlc_object_t *p_this, demux_sys_t *p_sys,
2860 snd_pcm_t *p_alsa_pcm;
2861 char* psz_alsa_device_name = ResolveALSADeviceName( psz_device ?: ALSA_DEFAULT );
2863 if( ( i_err = snd_pcm_open( &p_alsa_pcm, psz_alsa_device_name, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK ) ) < 0 )
2865 msg_Err( p_this, "cannot open device %s for ALSA audio (%s)", psz_alsa_device_name, snd_strerror( i_err ) );
2866 free( psz_alsa_device_name );
2870 snd_pcm_close( p_alsa_pcm );
2871 free( psz_alsa_device_name );
2877 static bool ProbeAudioDevOss( vlc_object_t *p_this, demux_sys_t *p_sys,
2882 char* psz_oss_device_name = strdup( psz_device ? psz_device : OSS_DEFAULT );
2884 if( ( i_fd = open( psz_oss_device_name, O_RDONLY | O_NONBLOCK ) ) < 0 )
2886 msg_Err( p_this, "cannot open device %s for OSS audio (%m)", psz_oss_device_name );
2890 /* this will fail if the device is video */
2891 if( ioctl( i_fd, SNDCTL_DSP_GETCAPS, &i_caps ) < 0 )
2893 msg_Err( p_this, "cannot get audio caps (%m)" );
2897 free( psz_oss_device_name );
2898 if( i_fd >= 0 ) close( i_fd );
2903 free( psz_oss_device_name );
2904 if( i_fd >= 0 ) close( i_fd );
2908 static bool ProbeAudioDev( vlc_object_t *p_this, demux_sys_t *p_sys,
2912 if( ( p_sys->i_audio_method & AUDIO_METHOD_ALSA )
2913 && ProbeAudioDevAlsa( p_this, p_sys, psz_device ) )
2915 p_sys->i_audio_method = AUDIO_METHOD_ALSA;
2920 if( ( p_sys->i_audio_method & AUDIO_METHOD_OSS )
2921 && ProbeAudioDevOss( p_this, p_sys, psz_device ) )
2923 p_sys->i_audio_method = AUDIO_METHOD_OSS;
2927 p_sys->i_audio_method = 0;
2931 static void name2var( unsigned char *name )
2933 for( ; *name; name++ )
2934 *name = (*name == ' ') ? '_' : tolower( *name );
2937 /*****************************************************************************
2938 * Print a user-class v4l2 control's details, create the relevant variable,
2939 * change the value if needed.
2940 *****************************************************************************/
2941 static void ControlListPrint( vlc_object_t *p_obj, int i_fd,
2942 struct v4l2_queryctrl queryctrl,
2943 bool b_reset, bool b_demux )
2945 struct v4l2_querymenu querymenu;
2952 vlc_value_t val, val2;
2954 if( queryctrl.flags & V4L2_CTRL_FLAG_GRABBED )
2955 msg_Dbg( p_obj, " control is busy" );
2956 if( queryctrl.flags & V4L2_CTRL_FLAG_READ_ONLY )
2957 msg_Dbg( p_obj, " control is read-only" );
2959 for( i = 0; controls[i].psz_name != NULL; i++ )
2960 if( controls[i].i_cid == queryctrl.id ) break;
2962 if( controls[i].psz_name )
2964 psz_name = strdup( controls[i].psz_name );
2965 char psz_cfg_name[40];
2966 sprintf( psz_cfg_name, CFG_PREFIX "%s", psz_name );
2967 i_val = var_CreateGetInteger( p_obj, psz_cfg_name );
2968 var_Destroy( p_obj, psz_cfg_name );
2972 psz_name = strdup( (const char *)queryctrl.name );
2973 name2var( (unsigned char *)psz_name );
2977 switch( queryctrl.type )
2979 case V4L2_CTRL_TYPE_INTEGER:
2980 msg_Dbg( p_obj, " integer control" );
2982 " valid values: %d to %d by steps of %d",
2983 queryctrl.minimum, queryctrl.maximum,
2986 var_Create( p_obj, psz_name,
2987 VLC_VAR_INTEGER | VLC_VAR_HASMIN | VLC_VAR_HASMAX
2988 | VLC_VAR_HASSTEP | VLC_VAR_ISCOMMAND );
2989 val.i_int = queryctrl.minimum;
2990 var_Change( p_obj, psz_name, VLC_VAR_SETMIN, &val, NULL );
2991 val.i_int = queryctrl.maximum;
2992 var_Change( p_obj, psz_name, VLC_VAR_SETMAX, &val, NULL );
2993 val.i_int = queryctrl.step;
2994 var_Change( p_obj, psz_name, VLC_VAR_SETSTEP, &val, NULL );
2996 case V4L2_CTRL_TYPE_BOOLEAN:
2997 msg_Dbg( p_obj, " boolean control" );
2998 var_Create( p_obj, psz_name,
2999 VLC_VAR_BOOL | VLC_VAR_ISCOMMAND );
3001 case V4L2_CTRL_TYPE_MENU:
3002 msg_Dbg( p_obj, " menu control" );
3003 var_Create( p_obj, psz_name,
3004 VLC_VAR_INTEGER | VLC_VAR_HASCHOICE
3005 | VLC_VAR_ISCOMMAND );
3006 memset( &querymenu, 0, sizeof( querymenu ) );
3007 for( i_mid = queryctrl.minimum;
3008 i_mid <= (unsigned)queryctrl.maximum;
3011 querymenu.index = i_mid;
3012 querymenu.id = queryctrl.id;
3013 if( ioctl( i_fd, VIDIOC_QUERYMENU, &querymenu ) >= 0 )
3015 msg_Dbg( p_obj, " %d: %s",
3016 querymenu.index, querymenu.name );
3017 val.i_int = querymenu.index;
3018 val2.psz_string = (char *)querymenu.name;
3019 var_Change( p_obj, psz_name,
3020 VLC_VAR_ADDCHOICE, &val, &val2 );
3024 case V4L2_CTRL_TYPE_BUTTON:
3025 msg_Dbg( p_obj, " button control" );
3026 var_Create( p_obj, psz_name,
3027 VLC_VAR_VOID | VLC_VAR_ISCOMMAND );
3029 case V4L2_CTRL_TYPE_CTRL_CLASS:
3030 msg_Dbg( p_obj, " control class" );
3031 var_Create( p_obj, psz_name, VLC_VAR_VOID );
3034 msg_Dbg( p_obj, " unknown control type (FIXME)" );
3039 switch( queryctrl.type )
3041 case V4L2_CTRL_TYPE_INTEGER:
3042 case V4L2_CTRL_TYPE_BOOLEAN:
3043 case V4L2_CTRL_TYPE_MENU:
3045 struct v4l2_control control;
3046 msg_Dbg( p_obj, " default value: %d",
3047 queryctrl.default_value );
3048 memset( &control, 0, sizeof( control ) );
3049 control.id = queryctrl.id;
3050 if( ioctl( i_fd, VIDIOC_G_CTRL, &control ) >= 0 )
3052 msg_Dbg( p_obj, " current value: %d", control.value );
3056 i_val = control.value;
3057 if( b_reset && queryctrl.default_value != control.value )
3059 msg_Dbg( p_obj, " reset value to default" );
3060 Control( p_obj, i_fd, psz_name,
3061 queryctrl.id, queryctrl.default_value );
3066 Control( p_obj, i_fd, psz_name,
3067 queryctrl.id, i_val );
3075 val.psz_string = (char *)queryctrl.name;
3076 var_Change( p_obj, psz_name, VLC_VAR_SETTEXT, &val, NULL );
3077 val.i_int = queryctrl.id;
3078 val2.psz_string = (char *)psz_name;
3079 var_Change( p_obj, "allcontrols", VLC_VAR_ADDCHOICE, &val, &val2 );
3080 /* bad things happen changing MPEG mid-stream
3081 * so don't add to Ext Settings GUI */
3082 if( V4L2_CTRL_ID2CLASS( queryctrl.id ) != V4L2_CTRL_CLASS_MPEG )
3083 var_Change( p_obj, "controls", VLC_VAR_ADDCHOICE, &val, &val2 );
3085 switch( var_Type( p_obj, psz_name ) & VLC_VAR_TYPE )
3088 var_SetBool( p_obj, psz_name, i_val );
3090 case VLC_VAR_INTEGER:
3091 var_SetInteger( p_obj, psz_name, i_val );
3096 msg_Warn( p_obj, "FIXME: %s %s %d", __FILE__, __func__,
3102 var_AddCallback( p_obj, psz_name,
3103 DemuxControlCallback, (void*)(intptr_t)queryctrl.id );
3105 var_AddCallback( p_obj, psz_name,
3106 AccessControlCallback, (void*)(intptr_t)queryctrl.id );
3111 /*****************************************************************************
3112 * List all user-class v4l2 controls, set them to the user specified
3113 * value and create the relevant variables to enable runtime changes
3114 *****************************************************************************/
3115 static int ControlList( vlc_object_t *p_obj, int i_fd,
3116 bool b_reset, bool b_demux )
3118 struct v4l2_queryctrl queryctrl;
3121 memset( &queryctrl, 0, sizeof( queryctrl ) );
3123 /* A list of available controls (aka the variable name) will be
3124 * stored as choices in the "allcontrols" variable. We'll thus be able
3125 * to use those to create an appropriate interface
3126 * A list of available controls that can be changed mid-stream will
3127 * be stored in the "controls" variable */
3128 var_Create( p_obj, "controls", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
3129 var_Create( p_obj, "allcontrols", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
3131 var_Create( p_obj, "controls-update", VLC_VAR_VOID | VLC_VAR_ISCOMMAND );
3133 /* Add a control to reset all controls to their default values */
3134 vlc_value_t val, val2;
3135 var_Create( p_obj, "controls-reset", VLC_VAR_VOID | VLC_VAR_ISCOMMAND );
3136 val.psz_string = _( "Reset controls to default" );
3137 var_Change( p_obj, "controls-reset", VLC_VAR_SETTEXT, &val, NULL );
3139 val2.psz_string = (char *)"controls-reset";
3140 var_Change( p_obj, "controls", VLC_VAR_ADDCHOICE, &val, &val2 );
3142 var_AddCallback( p_obj, "controls-reset", DemuxControlResetCallback, NULL );
3144 var_AddCallback( p_obj, "controls-reset", AccessControlResetCallback, NULL );
3146 queryctrl.id = V4L2_CTRL_FLAG_NEXT_CTRL;
3147 if( ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
3149 msg_Dbg( p_obj, "Extended control API supported by v4l2 driver" );
3151 /* List extended controls */
3152 queryctrl.id = V4L2_CTRL_FLAG_NEXT_CTRL;
3153 while( ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
3155 if( queryctrl.type == V4L2_CTRL_TYPE_CTRL_CLASS )
3157 msg_Dbg( p_obj, "%s", queryctrl.name );
3158 queryctrl.id |= V4L2_CTRL_FLAG_NEXT_CTRL;
3161 switch( V4L2_CTRL_ID2CLASS( queryctrl.id ) )
3163 case V4L2_CTRL_CLASS_USER:
3164 msg_Dbg( p_obj, "Available control: %s (%x)",
3165 queryctrl.name, queryctrl.id );
3167 case V4L2_CTRL_CLASS_MPEG:
3168 name2var( queryctrl.name );
3169 msg_Dbg( p_obj, "Available MPEG control: %s (%x)",
3170 queryctrl.name, queryctrl.id );
3173 msg_Dbg( p_obj, "Available private control: %s (%x)",
3174 queryctrl.name, queryctrl.id );
3177 ControlListPrint( p_obj, i_fd, queryctrl, b_reset, b_demux );
3178 queryctrl.id |= V4L2_CTRL_FLAG_NEXT_CTRL;
3183 msg_Dbg( p_obj, "Extended control API not supported by v4l2 driver" );
3185 /* List public controls */
3186 for( i_cid = V4L2_CID_BASE;
3187 i_cid < V4L2_CID_LASTP1;
3190 queryctrl.id = i_cid;
3191 if( ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
3193 if( queryctrl.flags & V4L2_CTRL_FLAG_DISABLED )
3195 msg_Dbg( p_obj, "Available control: %s (%x)",
3196 queryctrl.name, queryctrl.id );
3197 ControlListPrint( p_obj, i_fd, queryctrl, b_reset, b_demux );
3201 /* List private controls */
3202 for( i_cid = V4L2_CID_PRIVATE_BASE;
3206 queryctrl.id = i_cid;
3207 if( ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
3209 if( queryctrl.flags & V4L2_CTRL_FLAG_DISABLED )
3211 msg_Dbg( p_obj, "Available private control: %s (%x)",
3212 queryctrl.name, queryctrl.id );
3213 ControlListPrint( p_obj, i_fd, queryctrl, b_reset, b_demux );
3223 static void SetAvailControlsByString( vlc_object_t *p_obj, demux_sys_t *p_sys,
3226 char *psz_parser = p_sys->psz_set_ctrls;
3227 vlc_value_t val, text, name;
3229 if( psz_parser == NULL )
3232 if( *psz_parser == '{' )
3235 int i_ret = var_Change( p_obj, "allcontrols", VLC_VAR_GETCHOICES,
3239 msg_Err( p_obj, "Oops, can't find 'allcontrols' variable." );
3243 while( *psz_parser && *psz_parser != '}' )
3245 char *psz_delim, *psz_assign;
3247 while( *psz_parser == ',' || *psz_parser == ' ' )
3250 psz_delim = strchr( psz_parser, ',' );
3251 if( psz_delim == NULL )
3252 psz_delim = strchr( psz_parser, '}' );
3253 if( psz_delim == NULL )
3254 psz_delim = psz_parser + strlen( psz_parser );
3256 psz_assign = memchr( psz_parser, '=', psz_delim - psz_parser );
3257 if( psz_assign == NULL )
3259 char *psz_name = strndup( psz_parser, psz_delim - psz_parser );
3260 msg_Err( p_obj, "%s missing '='", psz_name );
3262 psz_parser = psz_delim + 1;
3267 i < val.p_list->i_count ;//&& psz_parser < psz_assign;
3270 const char *psz_var = text.p_list->p_values[i].psz_string;
3271 int i_cid = val.p_list->p_values[i].i_int;
3272 var_Change( p_obj, psz_var, VLC_VAR_GETTEXT, &name, NULL );
3273 const char *psz_name = name.psz_string;
3275 int i_availstrlen = strlen( psz_name );
3276 int i_parsestrlen = psz_assign - psz_parser;
3277 int i_maxstrlen = __MAX( i_availstrlen, i_parsestrlen);
3279 if( !strncasecmp( psz_name, psz_parser, i_maxstrlen ) )
3281 Control( p_obj, i_fd, psz_name, i_cid,
3282 strtol( ++psz_assign, &psz_parser, 0) );
3286 if( psz_parser < psz_assign )
3288 char *psz_name = strndup( psz_parser, psz_assign - psz_parser );
3289 msg_Err( p_obj, "Control %s not available", psz_name );
3291 psz_parser = ( *psz_delim ) ? ( psz_delim + 1 ) : psz_delim;
3296 /*****************************************************************************
3297 * Reset all user-class v4l2 controls to their default value
3298 *****************************************************************************/
3299 static int ControlReset( vlc_object_t *p_obj, int i_fd )
3301 struct v4l2_queryctrl queryctrl;
3303 memset( &queryctrl, 0, sizeof( queryctrl ) );
3305 queryctrl.id = V4L2_CTRL_FLAG_NEXT_CTRL;
3306 if( ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
3308 /* Extended control API supported */
3309 queryctrl.id = V4L2_CTRL_FLAG_NEXT_CTRL;
3310 while( ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
3312 if( queryctrl.type == V4L2_CTRL_TYPE_CTRL_CLASS
3313 || V4L2_CTRL_ID2CLASS( queryctrl.id ) == V4L2_CTRL_CLASS_MPEG )
3315 queryctrl.id |= V4L2_CTRL_FLAG_NEXT_CTRL;
3318 struct v4l2_control control;
3319 memset( &control, 0, sizeof( control ) );
3320 control.id = queryctrl.id;
3321 if( ioctl( i_fd, VIDIOC_G_CTRL, &control ) >= 0
3322 && queryctrl.default_value != control.value )
3325 for( i = 0; controls[i].psz_name != NULL; i++ )
3326 if( controls[i].i_cid == queryctrl.id ) break;
3327 name2var( queryctrl.name );
3328 Control( p_obj, i_fd,
3329 controls[i].psz_name ? : (const char *)queryctrl.name,
3330 queryctrl.id, queryctrl.default_value );
3332 queryctrl.id |= V4L2_CTRL_FLAG_NEXT_CTRL;
3338 /* public controls */
3339 for( i_cid = V4L2_CID_BASE;
3340 i_cid < V4L2_CID_LASTP1;
3343 queryctrl.id = i_cid;
3344 if( ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
3346 struct v4l2_control control;
3347 if( queryctrl.flags & V4L2_CTRL_FLAG_DISABLED )
3349 memset( &control, 0, sizeof( control ) );
3350 control.id = queryctrl.id;
3351 if( ioctl( i_fd, VIDIOC_G_CTRL, &control ) >= 0
3352 && queryctrl.default_value != control.value )
3355 for( i = 0; controls[i].psz_name != NULL; i++ )
3356 if( controls[i].i_cid == queryctrl.id ) break;
3357 name2var( queryctrl.name );
3358 Control( p_obj, i_fd,
3359 controls[i].psz_name ? : (const char *)queryctrl.name,
3360 queryctrl.id, queryctrl.default_value );
3365 /* private controls */
3366 for( i_cid = V4L2_CID_PRIVATE_BASE;
3370 queryctrl.id = i_cid;
3371 if( ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
3373 struct v4l2_control control;
3374 if( queryctrl.flags & V4L2_CTRL_FLAG_DISABLED )
3376 memset( &control, 0, sizeof( control ) );
3377 control.id = queryctrl.id;
3378 if( ioctl( i_fd, VIDIOC_G_CTRL, &control ) >= 0
3379 && queryctrl.default_value != control.value )
3381 name2var( queryctrl.name );
3382 Control( p_obj, i_fd, (const char *)queryctrl.name,
3383 queryctrl.id, queryctrl.default_value );
3393 /*****************************************************************************
3394 * Issue user-class v4l2 controls
3395 *****************************************************************************/
3396 static int Control( vlc_object_t *p_obj, int i_fd,
3397 const char *psz_name, int i_cid, int i_value )
3399 struct v4l2_queryctrl queryctrl;
3400 struct v4l2_control control;
3401 struct v4l2_ext_control ext_control;
3402 struct v4l2_ext_controls ext_controls;
3407 memset( &queryctrl, 0, sizeof( queryctrl ) );
3409 queryctrl.id = i_cid;
3411 if( ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) < 0
3412 || queryctrl.flags & V4L2_CTRL_FLAG_DISABLED )
3414 msg_Dbg( p_obj, "%s (%x) control is not supported.", psz_name, i_cid );
3415 return VLC_EGENERIC;
3418 memset( &control, 0, sizeof( control ) );
3419 memset( &ext_control, 0, sizeof( ext_control ) );
3420 memset( &ext_controls, 0, sizeof( ext_controls ) );
3422 ext_control.id = i_cid;
3423 ext_controls.ctrl_class = V4L2_CTRL_ID2CLASS( i_cid );
3424 ext_controls.count = 1;
3425 ext_controls.controls = &ext_control;
3431 ext_control.value = i_value;
3432 if( ioctl( i_fd, VIDIOC_S_EXT_CTRLS, &ext_controls ) < 0 )
3434 control.value = i_value;
3435 if( ioctl( i_fd, VIDIOC_S_CTRL, &control ) < 0 )
3437 msg_Err( p_obj, "unable to set %s (%x) to %d (%m)",
3438 psz_name, i_cid, i_value );
3439 return VLC_EGENERIC;
3441 i_ret = ioctl( i_fd, VIDIOC_G_CTRL, &control );
3445 i_ret = ioctl( i_fd, VIDIOC_G_EXT_CTRLS, &ext_controls );
3446 control.value = ext_control.value;
3453 msg_Dbg( p_obj, "video %s: %d", psz_name, control.value );
3454 switch( var_Type( p_obj, psz_name ) & VLC_VAR_TYPE )
3457 val.b_bool = control.value;
3458 var_Change( p_obj, psz_name, VLC_VAR_SETVALUE, &val, NULL );
3459 var_SetVoid( p_obj, "controls-update" );
3461 case VLC_VAR_INTEGER:
3462 val.i_int = control.value;
3463 var_Change( p_obj, psz_name, VLC_VAR_SETVALUE, &val, NULL );
3464 var_SetVoid( p_obj, "controls-update" );
3471 /*****************************************************************************
3472 * On the fly change settings callback
3473 *****************************************************************************/
3474 static int DemuxControlCallback( vlc_object_t *p_this,
3475 const char *psz_var, vlc_value_t oldval, vlc_value_t newval,
3479 demux_t *p_demux = (demux_t*)p_this;
3480 demux_sys_t *p_sys = p_demux->p_sys;
3481 int i_cid = (int)p_data;
3483 int i_fd = p_sys->i_fd_video;
3486 return VLC_EGENERIC;
3488 Control( p_this, i_fd, psz_var, i_cid, newval.i_int );
3490 return VLC_EGENERIC;
3493 static int DemuxControlResetCallback( vlc_object_t *p_this,
3494 const char *psz_var, vlc_value_t oldval, vlc_value_t newval, void *p_data )
3496 (void)psz_var; (void)oldval; (void)newval; (void)p_data;
3497 demux_t *p_demux = (demux_t*)p_this;
3498 demux_sys_t *p_sys = p_demux->p_sys;
3500 int i_fd = p_sys->i_fd_video;
3503 return VLC_EGENERIC;
3505 ControlReset( p_this, i_fd );
3507 return VLC_EGENERIC;
3510 static int AccessControlCallback( vlc_object_t *p_this,
3511 const char *psz_var, vlc_value_t oldval, vlc_value_t newval,
3515 access_t *p_access = (access_t *)p_this;
3516 demux_sys_t *p_sys = (demux_sys_t *) p_access->p_sys;
3517 int i_cid = (int)p_data;
3519 int i_fd = p_sys->i_fd_video;
3522 return VLC_EGENERIC;
3524 Control( p_this, i_fd, psz_var, i_cid, newval.i_int );
3526 return VLC_EGENERIC;
3529 static int AccessControlResetCallback( vlc_object_t *p_this,
3530 const char *psz_var, vlc_value_t oldval, vlc_value_t newval, void *p_data )
3532 (void)psz_var; (void)oldval; (void)newval; (void)p_data;
3533 access_t *p_access = (access_t *)p_this;
3534 demux_sys_t *p_sys = (demux_sys_t *) p_access->p_sys;
3536 int i_fd = p_sys->i_fd_video;
3539 return VLC_EGENERIC;
3541 ControlReset( p_this, i_fd );
3543 return VLC_EGENERIC;