* Copyright (C) 2002-2007 the VideoLAN team
* $Id$
*
- * Author: Benjamin Pracht <bigben at videolan dot org>
- * Richard Hosking <richard at hovis dot net>
+ * Authors: Benjamin Pracht <bigben at videolan dot org>
+ * Richard Hosking <richard at hovis dot net>
+ * Antoine Cellerier <dionoea at videolan d.t net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
/*
* Sections based on the reference V4L2 capture example at
* http://v4l2spec.bytesex.org/spec/capture-example.html
+ *
+ * ALSA support based on parts of
+ * http://www.equalarea.com/paul/alsa-audio.html
+ * and hints taken from alsa-utils (aplay/arecord)
+ * http://www.alsa-project.org
*/
/*
* TODO: No mjpeg support yet.
* TODO: Tuner partial implementation.
- * TODO: Alsa input support?
+ * TODO: Alsa input support - experimental
*/
/*****************************************************************************
#include <sys/soundcard.h>
+#ifdef HAVE_ALSA
+# define ALSA_PCM_NEW_HW_PARAMS_API
+# define ALSA_PCM_NEW_SW_PARAMS_API
+# include <alsa/asoundlib.h>
+#endif
+
/*****************************************************************************
* Module descriptior
*****************************************************************************/
#define DEV_LONGTEXT N_( \
"Name of the device to use. " \
"If you don't specify anything, /dev/video0 will be used.")
-#define ADEV_TEXT N_("Audio device name")
-#define ADEV_LONGTEXT N_( \
- "Name of the audio device to use. " \
- "If you don't specify anything, /dev/dsp will be used.")
#define STANDARD_TEXT N_( "Standard" )
#define STANDARD_LONGTEXT N_( \
"Video standard (Default, SECAM, PAL, or NTSC)." )
#define CHROMA_TEXT N_("Video input chroma format")
#define CHROMA_LONGTEXT N_( \
"Force the Video4Linux2 video device to use a specific chroma format " \
- "(eg. I420, RV24, etc.)")
+ "(eg. I420 or I422 for raw images, MJPEG for M-JPEG compressed input) " \
+ "(Complete list: GREY, I240, RV16, RV15, RV24, RV32, YUY2, YUYV, UYVY, " \
+ "I41N, I422, I420, I411, I410, MJPG)")
#define INPUT_TEXT N_( "Input" )
#define INPUT_LONGTEXT N_( \
"Input of the card to use (Usually, 0 = tuner, " \
#define FPS_TEXT N_( "Framerate" )
#define FPS_LONGTEXT N_( "Framerate to capture, if applicable " \
"(-1 for autodetect)." )
+
+#define CTRL_RESET_TEXT N_( "Reset v4l2 controls" )
+#define CTRL_RESET_LONGTEXT N_( \
+ "Reset controls to defaults provided by the v4l2 driver." )
+#define BRIGHTNESS_TEXT N_( "Brightness" )
+#define BRIGHTNESS_LONGTEXT N_( \
+ "Brightness of the video input." )
+#define CONTRAST_TEXT N_( "Contrast" )
+#define CONTRAST_LONGTEXT N_( \
+ "Contrast of the video input." )
+#define SATURATION_TEXT N_( "Saturation" )
+#define SATURATION_LONGTEXT N_( \
+ "Saturation of the video input." )
+#define HUE_TEXT N_( "Hue" )
+#define HUE_LONGTEXT N_( \
+ "Hue of the video input." )
+#define GAMMA_TEXT N_( "Gamma" )
+#define GAMMA_LONGTEXT N_( \
+ "Gamma of the video input." )
+
+#define ADEV_TEXT N_("Audio device name")
+#define ADEV_LONGTEXT N_( \
+ "Name of the audio device to use. " \
+ "If you don't specify anything, /dev/dsp will be used.")
+#define ALSA_TEXT N_( "Use Alsa" )
+#define ALSA_LONGTEXT N_( \
+ "Use ALSA instead of OSS for audio" )
#define STEREO_TEXT N_( "Stereo" )
#define STEREO_LONGTEXT N_( \
"Capture the audio stream in stereo." )
#define SAMPLERATE_TEXT N_( "Samplerate" )
#define SAMPLERATE_LONGTEXT N_( \
"Samplerate of the captured audio stream, in Hz (eg: 11025, 22050, 44100, 48000)" )
+
#define CACHING_TEXT N_("Caching value in ms")
#define CACHING_LONGTEXT N_( \
"Caching value for V4L2 captures. This " \
static const char *psz_iomethod_list_text[] =
{ N_("READ"), N_("MMAP"), N_("USERPTR") };
+#define CFG_PREFIX "v4l2-"
+
vlc_module_begin();
set_shortname( _("Video4Linux2") );
set_description( _("Video4Linux2 input") );
set_category( CAT_INPUT );
set_subcategory( SUBCAT_INPUT_ACCESS );
- add_string( "v4l2-dev", "/dev/video0", 0, DEV_TEXT, DEV_LONGTEXT,
- VLC_FALSE );
- add_string( "v4l2-adev", "/dev/dsp", 0, ADEV_TEXT, ADEV_LONGTEXT,
- VLC_FALSE );
- add_integer( "v4l2-standard", 0, NULL, STANDARD_TEXT, STANDARD_LONGTEXT,
+ set_section( N_( "Video input" ), NULL );
+ add_string( CFG_PREFIX "dev", "/dev/video0", 0, DEV_TEXT, DEV_LONGTEXT,
VLC_FALSE );
+ add_integer( CFG_PREFIX "standard", 0, NULL, STANDARD_TEXT,
+ STANDARD_LONGTEXT, VLC_FALSE );
change_integer_list( i_standards_list, psz_standards_list_text, 0 );
- add_string( "v4l2-chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
+ add_string( CFG_PREFIX "chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
VLC_TRUE );
- add_integer( "v4l2-input", 0, NULL, INPUT_TEXT, INPUT_LONGTEXT,
+ add_integer( CFG_PREFIX "input", 0, NULL, INPUT_TEXT, INPUT_LONGTEXT,
VLC_TRUE );
- add_integer( "v4l2-io", IO_METHOD_MMAP, NULL, IOMETHOD_TEXT,
+ add_integer( CFG_PREFIX "io", IO_METHOD_MMAP, NULL, IOMETHOD_TEXT,
IOMETHOD_LONGTEXT, VLC_TRUE );
change_integer_list( i_iomethod_list, psz_iomethod_list_text, 0 );
- add_integer( "v4l2-width", 0, NULL, WIDTH_TEXT,
+ add_integer( CFG_PREFIX "width", 0, NULL, WIDTH_TEXT,
WIDTH_LONGTEXT, VLC_TRUE );
- add_integer( "v4l2-height", 0, NULL, HEIGHT_TEXT,
+ add_integer( CFG_PREFIX "height", 0, NULL, HEIGHT_TEXT,
HEIGHT_LONGTEXT, VLC_TRUE );
- add_float( "v4l2-fps", 0, NULL, FPS_TEXT, FPS_LONGTEXT, VLC_TRUE );
- add_bool( "v4l2-stereo", VLC_TRUE, NULL, STEREO_TEXT, STEREO_LONGTEXT,
+ add_float( CFG_PREFIX "fps", 0, NULL, FPS_TEXT, FPS_LONGTEXT, VLC_TRUE );
+
+ set_section( N_( "Video controls" ), NULL );
+ add_bool( CFG_PREFIX "control-reset", VLC_FALSE, NULL, CTRL_RESET_TEXT,
+ CTRL_RESET_LONGTEXT, VLC_TRUE );
+ add_integer( CFG_PREFIX "brightness", -1, NULL, BRIGHTNESS_TEXT,
+ BRIGHTNESS_LONGTEXT, VLC_TRUE );
+ add_integer( CFG_PREFIX "contrast", -1, NULL, CONTRAST_TEXT,
+ CONTRAST_LONGTEXT, VLC_TRUE );
+ add_integer( CFG_PREFIX "saturation", -1, NULL, SATURATION_TEXT,
+ SATURATION_LONGTEXT, VLC_TRUE );
+ add_integer( CFG_PREFIX "hue", -1, NULL, HUE_TEXT,
+ HUE_LONGTEXT, VLC_TRUE );
+ add_integer( CFG_PREFIX "gamma", -1, NULL, GAMMA_TEXT,
+ GAMMA_LONGTEXT, VLC_TRUE );
+
+ set_section( N_( "Audio input" ), NULL );
+ add_string( CFG_PREFIX "adev", "/dev/dsp", 0, ADEV_TEXT, ADEV_LONGTEXT,
+ VLC_FALSE );
+#ifdef HAVE_ALSA
+ add_bool( CFG_PREFIX "alsa", VLC_FALSE, NULL, ALSA_TEXT, ALSA_LONGTEXT,
+ VLC_TRUE );
+#endif
+ add_bool( CFG_PREFIX "stereo", VLC_TRUE, NULL, STEREO_TEXT, STEREO_LONGTEXT,
VLC_TRUE );
- add_integer( "v4l2-samplerate", 48000, NULL, SAMPLERATE_TEXT,
+ add_integer( CFG_PREFIX "samplerate", 48000, NULL, SAMPLERATE_TEXT,
SAMPLERATE_LONGTEXT, VLC_TRUE );
- add_integer( "v4l2-caching", DEFAULT_PTS_DELAY / 1000, NULL,
+ add_integer( CFG_PREFIX "caching", DEFAULT_PTS_DELAY / 1000, NULL,
CACHING_TEXT, CACHING_LONGTEXT, VLC_TRUE );
add_shortcut( "v4l2" );
static int Demux( demux_t * );
static block_t* GrabVideo( demux_t *p_demux );
-static block_t* ProcessVideoFrame( demux_t *p_demux, uint8_t *p_frame );
+static block_t* ProcessVideoFrame( demux_t *p_demux, uint8_t *p_frame, size_t );
static block_t* GrabAudio( demux_t *p_demux );
vlc_bool_t IsPixelFormatSupported( demux_t *p_demux, unsigned int i_pixelformat );
+char* ResolveALSADeviceName( char *psz_device );
static int OpenVideoDev( demux_t *, char *psz_device );
static int OpenAudioDev( demux_t *, char *psz_device );
static vlc_bool_t ProbeVideoDev( demux_t *, char *psz_device );
static vlc_bool_t ProbeAudioDev( demux_t *, char *psz_device );
+static int VideoControlList( demux_t *p_demux, int i_fd, vlc_bool_t b_reset );
+static int VideoControl( demux_t *, int i_fd,
+ const char *psz_name, int i_cid, int i_value );
+static int VideoControlCallback( vlc_object_t *p_this,
+ const char *psz_var, vlc_value_t oldval, vlc_value_t newval,
+ void *p_data );
+
static struct
{
unsigned int i_v4l2;
int i_fourcc;
} v4l2chroma_to_fourcc[] =
{
- { V4L2_PIX_FMT_GREY, VLC_FOURCC( 'G', 'R', 'E', 'Y' ) },
- { V4L2_PIX_FMT_HI240, VLC_FOURCC( 'I', '2', '4', '0' ) },
- { V4L2_PIX_FMT_RGB565, VLC_FOURCC( 'R', 'V', '1', '6' ) },
- { V4L2_PIX_FMT_RGB555, VLC_FOURCC( 'R', 'V', '1', '5' ) },
- { V4L2_PIX_FMT_BGR24, VLC_FOURCC( 'R', 'V', '2', '4' ) },
- { V4L2_PIX_FMT_BGR32, VLC_FOURCC( 'R', 'V', '3', '2' ) },
- { V4L2_PIX_FMT_YUYV, VLC_FOURCC( 'Y', 'U', 'Y', '2' ) },
- { V4L2_PIX_FMT_YUYV, VLC_FOURCC( 'Y', 'U', 'Y', 'V' ) },
- { V4L2_PIX_FMT_UYVY, VLC_FOURCC( 'U', 'Y', 'V', 'Y' ) },
- { V4L2_PIX_FMT_Y41P, VLC_FOURCC( 'I', '4', '1', 'N' ) },
- { V4L2_PIX_FMT_YUV422P, VLC_FOURCC( 'I', '4', '2', '2' ) },
- { V4L2_PIX_FMT_YVU420, VLC_FOURCC( 'I', '4', '2', '0' ) },
- { V4L2_PIX_FMT_YUV411P, VLC_FOURCC( 'I', '4', '1', '1' ) },
- { V4L2_PIX_FMT_YUV410, VLC_FOURCC( 'I', '4', '1', '0' ) },
+ /* Raw data types */
+ { V4L2_PIX_FMT_GREY, VLC_FOURCC('G','R','E','Y') },
+ { V4L2_PIX_FMT_HI240, VLC_FOURCC('I','2','4','0') },
+ { V4L2_PIX_FMT_RGB565, VLC_FOURCC('R','V','1','6') },
+ { V4L2_PIX_FMT_RGB555, VLC_FOURCC('R','V','1','5') },
+ { V4L2_PIX_FMT_BGR24, VLC_FOURCC('R','V','2','4') },
+ { V4L2_PIX_FMT_BGR32, VLC_FOURCC('R','V','3','2') },
+ { V4L2_PIX_FMT_YUYV, VLC_FOURCC('Y','U','Y','2') },
+ { V4L2_PIX_FMT_YUYV, VLC_FOURCC('Y','U','Y','V') },
+ { V4L2_PIX_FMT_UYVY, VLC_FOURCC('U','Y','V','Y') },
+ { V4L2_PIX_FMT_Y41P, VLC_FOURCC('I','4','1','N') },
+ { V4L2_PIX_FMT_YUV422P, VLC_FOURCC('I','4','2','2') },
+ { V4L2_PIX_FMT_YVU420, VLC_FOURCC('I','4','2','0') },
+ { V4L2_PIX_FMT_YUV411P, VLC_FOURCC('I','4','1','1') },
+ { V4L2_PIX_FMT_YUV410, VLC_FOURCC('I','4','1','0') },
+ /* Compressed data types */
+ { V4L2_PIX_FMT_MJPEG, VLC_FOURCC('M','J','P','G') },
+#if 0
+ { V4L2_PIX_FMT_JPEG, VLC_FOURCC('J','P','E','G') },
+ { V4L2_PIX_FMT_DV, VLC_FOURCC('?','?','?','?') },
+ { V4L2_PIX_FMT_MPEG, VLC_FOURCC('?','?','?','?') },
+#endif
{ 0, 0 }
};
+static struct
+{
+ const char *psz_name;
+ unsigned int i_cid;
+} controls[] =
+{
+ { "brightness", V4L2_CID_BRIGHTNESS },
+ { "contrast", V4L2_CID_CONTRAST },
+ { "saturation", V4L2_CID_SATURATION },
+ { "hue", V4L2_CID_HUE },
+ { "audio-volume", V4L2_CID_AUDIO_VOLUME },
+ { "audio-balance", V4L2_CID_AUDIO_BALANCE },
+ { "audio-bass", V4L2_CID_AUDIO_BASS },
+ { "audio-treble", V4L2_CID_AUDIO_TREBLE },
+ { "audio-mute", V4L2_CID_AUDIO_MUTE },
+ { "audio-loudness", V4L2_CID_AUDIO_LOUDNESS },
+ { "black-level", V4L2_CID_BLACK_LEVEL },
+ { "auto-white-balance", V4L2_CID_AUTO_WHITE_BALANCE },
+ { "do-white-balance", V4L2_CID_DO_WHITE_BALANCE },
+ { "red-balance", V4L2_CID_RED_BALANCE },
+ { "blue-balance", V4L2_CID_BLUE_BALANCE },
+ { "gamma", V4L2_CID_GAMMA },
+ { "exposure", V4L2_CID_EXPOSURE },
+ { "autogain", V4L2_CID_AUTOGAIN },
+ { "gain", V4L2_CID_GAIN },
+ { "hflip", V4L2_CID_HFLIP },
+ { "vflip", V4L2_CID_VFLIP },
+ { "hcenter", V4L2_CID_HCENTER },
+ { "vcenter", V4L2_CID_VCENTER },
+ { NULL, 0 }
+};
+
struct buffer_t
{
void * start;
mtime_t i_video_pts; /* only used when f_fps > 0 */
int i_fourcc;
- picture_t pic;
- int i_video_frame_size;
-
es_out_id_t *p_es_video;
/* Audio */
- int i_sample_rate;
+ unsigned int i_sample_rate;
vlc_bool_t b_stereo;
int i_audio_max_frame_size;
block_t *p_block_audio;
es_out_id_t *p_es_audio;
+
+#ifdef HAVE_ALSA
+ /* ALSA Audio */
+ vlc_bool_t b_use_alsa;
+ snd_pcm_t *p_alsa_pcm;
+ int i_alsa_frame_size;
+ int i_alsa_chunk_size;
+#endif
};
/*****************************************************************************
p_sys->i_width = var_CreateGetInteger( p_demux, "v4l2-width" );
p_sys->i_height = var_CreateGetInteger( p_demux, "v4l2-height" );
+ var_CreateGetBool( p_demux, "v4l2-control-reset" );
+
var_Create( p_demux, "v4l2-fps", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
var_Get( p_demux, "v4l2-fps", &val );
p_sys->f_fps = val.f_float;
p_sys->psz_requested_chroma = var_CreateGetString( p_demux, "v4l2-chroma" );
+#ifdef HAVE_ALSA
+ var_Create( p_demux, "v4l2-alsa", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
+ var_Get( p_demux, "v4l2-alsa", &val );
+ p_sys->b_use_alsa = val.b_bool;
+#endif
+
var_Create( p_demux, "v4l2-stereo", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
var_Get( p_demux, "v4l2-stereo", &val );
p_sys->b_stereo = val.b_bool;
ParseMRL( p_demux );
+#ifdef HAVE_ALSA
+ /* Alsa support available? */
+ msg_Dbg( p_demux, "ALSA input support available" );
+#endif
+
/* Find main device (video or audio) */
if( p_sys->psz_device && *p_sys->psz_device )
{
strtol( psz_parser + strlen( "height=" ),
&psz_parser, 0 );
}
+ else if( !strncmp( psz_parser, "control-reset",
+ strlen( "control-reset" ) ) )
+ {
+ var_SetBool( p_demux, "v4l2-control-reset", VLC_TRUE );
+ psz_parser += strlen( "control-reset" );
+ }
+#if 0
+ else if( !strncmp( psz_parser, "brightness=",
+ strlen( "brightness=" ) ) )
+ {
+ var_SetInteger( p_demux, "brightness",
+ strtol( psz_parser + strlen( "brightness=" ),
+ &psz_parser, 0 ) );
+ }
+ else if( !strncmp( psz_parser, "contrast=",
+ strlen( "contrast=" ) ) )
+ {
+ var_SetInteger( p_demux, "contrast",
+ strtol( psz_parser + strlen( "contrast=" ),
+ &psz_parser, 0 ) );
+ }
+ else if( !strncmp( psz_parser, "saturation=",
+ strlen( "saturation=" ) ) )
+ {
+ var_SetInteger( p_demux, "saturation",
+ strtol( psz_parser + strlen( "saturation=" ),
+ &psz_parser, 0 ) );
+ }
+ else if( !strncmp( psz_parser, "hue=",
+ strlen( "hue=" ) ) )
+ {
+ var_SetInteger( p_demux, "hue",
+ strtol( psz_parser + strlen( "hue=" ),
+ &psz_parser, 0 ) );
+ }
+ else if( !strncmp( psz_parser, "gamma=",
+ strlen( "gamma=" ) ) )
+ {
+ var_SetInteger( p_demux, "gamma",
+ strtol( psz_parser + strlen( "gamma=" ),
+ &psz_parser, 0 ) );
+ }
+#endif
else if( !strncmp( psz_parser, "samplerate=",
strlen( "samplerate=" ) ) )
{
strtol( psz_parser + strlen( "samplerate=" ),
&psz_parser, 0 );
}
+#ifdef HAVE_ALSA
+ else if( !strncmp( psz_parser, "alsa", strlen( "alsa" ) ) )
+ {
+ psz_parser += strlen( "alsa" );
+ p_sys->b_use_alsa = VLC_TRUE;
+ }
+#endif
else if( !strncmp( psz_parser, "stereo", strlen( "stereo" ) ) )
{
psz_parser += strlen( "stereo" );
/* Close */
if( p_sys->i_fd_video >= 0 ) close( p_sys->i_fd_video );
- if( p_sys->i_fd_audio >= 0 ) close( p_sys->i_fd_audio );
+#ifdef HAVE_ALSA
+ if( p_sys->b_use_alsa )
+ {
+ if( p_sys->p_alsa_pcm ) snd_pcm_close( p_sys->p_alsa_pcm );
+ }
+ else
+#endif
+ {
+ if( p_sys->i_fd_audio >= 0 ) close( p_sys->i_fd_audio );
+ }
if( p_sys->p_block_audio ) block_Release( p_sys->p_block_audio );
if( p_sys->psz_device ) free( p_sys->psz_device );
block_t *p_block = NULL;
struct v4l2_buffer buf;
+ ssize_t i_ret;
if( p_sys->f_fps >= 0.1 && p_sys->i_video_pts > 0 )
{
switch( p_sys->io )
{
case IO_METHOD_READ:
- if( read( p_sys->i_fd_video, p_sys->p_buffers[0].start, p_sys->p_buffers[0].length ) )
+ i_ret = read( p_sys->i_fd_video, p_sys->p_buffers[0].start, p_sys->p_buffers[0].length );
+ if( i_ret == -1 )
{
switch( errno )
{
}
}
- p_block = ProcessVideoFrame( p_demux, (uint8_t*)p_sys->p_buffers[0].start );
+ p_block = ProcessVideoFrame( p_demux, (uint8_t*)p_sys->p_buffers[0].start, i_ret );
if( !p_block ) return 0;
break;
return 0;
}
- p_block = ProcessVideoFrame( p_demux, p_sys->p_buffers[buf.index].start );
+ p_block = ProcessVideoFrame( p_demux, p_sys->p_buffers[buf.index].start, buf.bytesused );
if( !p_block ) return 0;
/* Unlock */
return 0;
}
- p_block = ProcessVideoFrame( p_demux, (uint8_t*)buf.m.userptr );
+ p_block = ProcessVideoFrame( p_demux, (uint8_t*)buf.m.userptr, buf.bytesused );
if( !p_block ) return 0;
/* Unlock */
* ProcessVideoFrame: Helper function to take a buffer and copy it into
* a new block
*****************************************************************************/
-static block_t* ProcessVideoFrame( demux_t *p_demux, uint8_t *p_frame )
+static block_t* ProcessVideoFrame( demux_t *p_demux, uint8_t *p_frame, size_t i_size )
{
- demux_sys_t *p_sys = p_demux->p_sys;
block_t *p_block;
if( !p_frame ) return 0;
/* New block */
- if( !( p_block = block_New( p_demux, p_sys->i_video_frame_size ) ) )
+ if( !( p_block = block_New( p_demux, i_size ) ) )
{
msg_Warn( p_demux, "Cannot get new block" );
return 0;
}
/* Copy frame */
- memcpy( p_block->p_buffer, p_frame, p_sys->i_video_frame_size );
+ memcpy( p_block->p_buffer, p_frame, i_size );
return p_block;
}
int i_read, i_correct;
block_t *p_block;
- /* Copied from v4l.c */
-
if( p_sys->p_block_audio ) p_block = p_sys->p_block_audio;
else p_block = block_New( p_demux, p_sys->i_audio_max_frame_size );
p_sys->p_block_audio = p_block;
- i_read = read( p_sys->i_fd_audio, p_block->p_buffer,
- p_sys->i_audio_max_frame_size );
+#ifdef HAVE_ALSA
+ if( p_sys->b_use_alsa )
+ {
+ /* ALSA */
+ i_read = snd_pcm_readi( p_sys->p_alsa_pcm, p_block->p_buffer, p_sys->i_alsa_chunk_size );
+ /* TODO: ALSA ERROR HANDLING?? xrun?? */
+
+ /* convert from frames to bytes */
+ if( i_read > 0 ) i_read *= p_sys->i_alsa_frame_size;
+ }
+ else
+#endif
+ {
+ /* OSS */
+ i_read = read( p_sys->i_fd_audio, p_block->p_buffer,
+ p_sys->i_audio_max_frame_size );
+ }
if( i_read <= 0 ) return 0;
/* Correct the date because of kernel buffering */
i_correct = i_read;
- if( ioctl( p_sys->i_fd_audio, SNDCTL_DSP_GETISPACE, &buf_info ) == 0 )
+#ifdef HAVE_ALSA
+ if( !p_sys->b_use_alsa )
+#endif
{
- i_correct += buf_info.bytes;
+ if( ioctl( p_sys->i_fd_audio, SNDCTL_DSP_GETISPACE, &buf_info ) == 0 )
+ {
+ i_correct += buf_info.bytes;
+ }
}
+#ifdef HAVE_ALSA
+ else
+ {
+ /* TODO: ALSA timing */
+ /* Very experimental code... */
+ int i_err;
+ snd_pcm_sframes_t delay = 0;
+ if( ( i_err = snd_pcm_delay( p_sys->p_alsa_pcm, &delay ) ) >= 0 )
+ {
+ int i_correction_delta = delay * p_sys->i_alsa_frame_size;
+ /* Test for overrun */
+ if( i_correction_delta>p_sys->i_audio_max_frame_size )
+ {
+ msg_Warn( p_demux, "ALSA read overrun" );
+ i_correction_delta = p_sys->i_audio_max_frame_size;
+ snd_pcm_prepare( p_sys->p_alsa_pcm );
+ }
+ i_correct += i_correction_delta;
+ }
+ else
+ {
+ /* delay failed so reset */
+ msg_Warn( p_demux, "ALSA snd_pcm_delay failed (%s)", snd_strerror( i_err ) );
+ snd_pcm_prepare( p_sys->p_alsa_pcm );
+ }
+ }
+#endif
/* Timestamp */
p_block->i_pts = p_block->i_dts =
struct v4l2_format fmt;
unsigned int i_min;
enum v4l2_buf_type buf_type;
+ int i;
if( ( i_fd = open( psz_device, O_RDWR ) ) < 0 )
{
/* Verify device support for the various IO methods */
switch( p_sys->io )
{
- case IO_METHOD_READ:
- if( !(p_sys->dev_cap.capabilities & V4L2_CAP_READWRITE) )
- {
- msg_Err( p_demux, "device does not support read i/o" );
- goto open_failed;
- }
- break;
+ case IO_METHOD_READ:
+ if( !(p_sys->dev_cap.capabilities & V4L2_CAP_READWRITE) )
+ {
+ msg_Err( p_demux, "device does not support read i/o" );
+ goto open_failed;
+ }
+ break;
- case IO_METHOD_MMAP:
- case IO_METHOD_USERPTR:
- if( !(p_sys->dev_cap.capabilities & V4L2_CAP_STREAMING) )
- {
- msg_Err( p_demux, "device does not support streaming i/o" );
- goto open_failed;
- }
- break;
+ case IO_METHOD_MMAP:
+ case IO_METHOD_USERPTR:
+ if( !(p_sys->dev_cap.capabilities & V4L2_CAP_STREAMING) )
+ {
+ msg_Err( p_demux, "device does not support streaming i/o" );
+ goto open_failed;
+ }
+ break;
- default:
- msg_Err( p_demux, "io method not supported" );
- goto open_failed;
+ default:
+ msg_Err( p_demux, "io method not supported" );
+ goto open_failed;
}
/* Reset Cropping */
{
switch( errno )
{
- case EINVAL:
- /* Cropping not supported. */
- break;
- default:
- /* Errors ignored. */
- break;
+ case EINVAL:
+ /* Cropping not supported. */
+ break;
+ default:
+ /* Errors ignored. */
+ break;
}
}
}
frmival.height = p_sys->i_height;
if( ioctl( i_fd, VIDIOC_ENUM_FRAMEINTERVALS, &frmival ) >= 0 )
{
- char psz_fourcc[5];
- memset( &psz_fourcc, 0, sizeof( psz_fourcc ) );
- vlc_fourcc_to_char( p_sys->i_fourcc, &psz_fourcc );
+ char sz_fourcc[5];
+ memset( &sz_fourcc, 0, sizeof( sz_fourcc ) );
+ vlc_fourcc_to_char( p_sys->i_fourcc, &sz_fourcc );
msg_Dbg( p_demux, "supported frame intervals for %4s, %dx%d:",
- (const char *)&psz_fourcc, frmival.width, frmival.height );
+ sz_fourcc, frmival.width, frmival.height );
switch( frmival.type )
{
case V4L2_FRMIVAL_TYPE_DISCRETE:
}
#endif
- /* Init vout Picture */
- vout_InitPicture( VLC_OBJECT(p_demux), &p_sys->pic, p_sys->i_fourcc,
- p_sys->i_width, p_sys->i_height, p_sys->i_width *
- VOUT_ASPECT_FACTOR / p_sys->i_height );
- if( !p_sys->pic.i_planes )
- {
- msg_Err( p_demux, "unsupported chroma" );
- goto open_failed;
- }
- p_sys->i_video_frame_size = 0;
- for( int i = 0; i < p_sys->pic.i_planes; i++ )
- {
- p_sys->i_video_frame_size += p_sys->pic.p[i].i_visible_lines * p_sys->pic.p[i].i_visible_pitch;
- }
+ VideoControlList( p_demux, i_fd,
+ var_GetBool( p_demux, "v4l2-control-reset" ) );
/* Init IO method */
switch( p_sys->io )
}
+#ifdef HAVE_ALSA
+/*****************************************************************************
+ * ResolveALSADeviceName: Change any . to : in the ALSA device name
+ *****************************************************************************/
+char* ResolveALSADeviceName( char *psz_device )
+{
+ char* psz_alsa_name = strdup( psz_device );
+ for( unsigned int i = 0; i < strlen( psz_device ); i++ )
+ {
+ if( psz_alsa_name[i] == '.' ) psz_alsa_name[i] = ':';
+ }
+ return psz_alsa_name;
+}
+#endif
+
/*****************************************************************************
* OpenAudioDev: open and set up the audio device and probe for capabilities
*****************************************************************************/
int OpenAudioDev( demux_t *p_demux, char *psz_device )
{
demux_sys_t *p_sys = p_demux->p_sys;
- int i_fd, i_format;
+ int i_fd = 0;
+ int i_format;
+#ifdef HAVE_ALSA
+ p_sys->p_alsa_pcm = NULL;
+ char* psz_alsa_device_name = ResolveALSADeviceName( psz_device );
+ snd_pcm_hw_params_t *p_hw_params = NULL;
+ snd_pcm_uframes_t buffer_size;
+ snd_pcm_uframes_t chunk_size;
+#endif
- if( (i_fd = open( psz_device, O_RDONLY | O_NONBLOCK )) < 0 )
+#ifdef HAVE_ALSA
+ if( p_sys->b_use_alsa )
{
- msg_Err( p_demux, "cannot open audio device (%m)" );
- goto adev_fail;
- }
+ /* ALSA */
- i_format = AFMT_S16_LE;
- if( ioctl( i_fd, SNDCTL_DSP_SETFMT, &i_format ) < 0
- || i_format != AFMT_S16_LE )
- {
- msg_Err( p_demux, "cannot set audio format (16b little endian) "
- "(%m)" );
- goto adev_fail;
- }
+ int i_err;
- if( ioctl( i_fd, SNDCTL_DSP_STEREO,
- &p_sys->b_stereo ) < 0 )
- {
- msg_Err( p_demux, "cannot set audio channels count (%m)" );
- goto adev_fail;
- }
+ if( ( i_err = snd_pcm_open( &p_sys->p_alsa_pcm, psz_alsa_device_name,
+ SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK ) ) < 0)
+ {
+ msg_Err( p_demux, "Cannot open ALSA audio device %s (%s)",
+ psz_alsa_device_name,
+ snd_strerror( i_err ) );
+ goto adev_fail;
+ }
+
+ if( ( i_err = snd_pcm_nonblock( p_sys->p_alsa_pcm, 1 ) ) < 0)
+ {
+ msg_Err( p_demux, "Cannot set ALSA nonblock (%s)",
+ snd_strerror( i_err ) );
+ goto adev_fail;
+ }
+
+ /* Begin setting hardware parameters */
+
+ if( ( i_err = snd_pcm_hw_params_malloc( &p_hw_params ) ) < 0 )
+ {
+ msg_Err( p_demux, "ALSA: cannot allocate hardware parameter structure (%s)",
+ snd_strerror( i_err ) );
+ goto adev_fail;
+ }
+
+ if( ( i_err = snd_pcm_hw_params_any( p_sys->p_alsa_pcm, p_hw_params ) ) < 0 )
+ {
+ msg_Err( p_demux, "ALSA: cannot initialize hardware parameter structure (%s)",
+ snd_strerror( i_err ) );
+ goto adev_fail;
+ }
+
+ /* Set Interleaved access */
+ if( ( i_err = snd_pcm_hw_params_set_access( p_sys->p_alsa_pcm, p_hw_params, SND_PCM_ACCESS_RW_INTERLEAVED ) ) < 0 )
+ {
+ msg_Err( p_demux, "ALSA: cannot set access type (%s)",
+ snd_strerror( i_err ) );
+ goto adev_fail;
+ }
+
+ /* Set 16 bit little endian */
+ if( ( i_err = snd_pcm_hw_params_set_format( p_sys->p_alsa_pcm, p_hw_params, SND_PCM_FORMAT_S16_LE ) ) < 0 )
+ {
+ msg_Err( p_demux, "ALSA: cannot set sample format (%s)",
+ snd_strerror( i_err ) );
+ goto adev_fail;
+ }
+
+ /* Set sample rate */
+#ifdef HAVE_ALSA_NEW_API
+ i_err = snd_pcm_hw_params_set_rate_near( p_sys->p_alsa_pcm, p_hw_params, &p_sys->i_sample_rate, NULL );
+#else
+ i_err = snd_pcm_hw_params_set_rate_near( p_sys->p_alsa_pcm, p_hw_params, p_sys->i_sample_rate, NULL );
+#endif
+ if( i_err < 0 )
+ {
+ msg_Err( p_demux, "ALSA: cannot set sample rate (%s)",
+ snd_strerror( i_err ) );
+ goto adev_fail;
+ }
+
+ /* Set channels */
+ unsigned int channels = p_sys->b_stereo ? 2 : 1;
+ if( ( i_err = snd_pcm_hw_params_set_channels( p_sys->p_alsa_pcm, p_hw_params, channels ) ) < 0 )
+ {
+ channels = ( channels==1 ) ? 2 : 1;
+ msg_Warn( p_demux, "ALSA: cannot set channel count (%s). Trying with channels=%d",
+ snd_strerror( i_err ),
+ channels );
+ if( ( i_err = snd_pcm_hw_params_set_channels( p_sys->p_alsa_pcm, p_hw_params, channels ) ) < 0 )
+ {
+ msg_Err( p_demux, "ALSA: cannot set channel count (%s)",
+ snd_strerror( i_err ) );
+ goto adev_fail;
+ }
+ p_sys->b_stereo = ( channels == 2 );
+ }
+
+ /* Set metrics for buffer calculations later */
+ unsigned int buffer_time;
+ if( ( i_err = snd_pcm_hw_params_get_buffer_time_max(p_hw_params, &buffer_time, 0) ) < 0 )
+ {
+ msg_Err( p_demux, "ALSA: cannot get buffer time max (%s)",
+ snd_strerror( i_err ) );
+ goto adev_fail;
+ }
+ if (buffer_time > 500000) buffer_time = 500000;
+
+ /* Set period time */
+ unsigned int period_time = buffer_time / 4;
+#ifdef HAVE_ALSA_NEW_API
+ i_err = snd_pcm_hw_params_set_period_time_near( p_sys->p_alsa_pcm, p_hw_params, &period_time, 0 );
+#else
+ i_err = snd_pcm_hw_params_set_period_time_near( p_sys->p_alsa_pcm, p_hw_params, period_time, 0 );
+#endif
+ if( i_err < 0 )
+ {
+ msg_Err( p_demux, "ALSA: cannot set period time (%s)",
+ snd_strerror( i_err ) );
+ goto adev_fail;
+ }
+
+ /* Set buffer time */
+#ifdef HAVE_ALSA_NEW_API
+ i_err = snd_pcm_hw_params_set_buffer_time_near( p_sys->p_alsa_pcm, p_hw_params, &buffer_time, 0 );
+#else
+ i_err = snd_pcm_hw_params_set_buffer_time_near( p_sys->p_alsa_pcm, p_hw_params, buffer_time, 0 );
+#endif
+ if( i_err < 0 )
+ {
+ msg_Err( p_demux, "ALSA: cannot set buffer time (%s)",
+ snd_strerror( i_err ) );
+ goto adev_fail;
+ }
+
+ /* Apply new hardware parameters */
+ if( ( i_err = snd_pcm_hw_params( p_sys->p_alsa_pcm, p_hw_params ) ) < 0 )
+ {
+ msg_Err( p_demux, "ALSA: cannot set hw parameters (%s)",
+ snd_strerror( i_err ) );
+ goto adev_fail;
+ }
+
+ /* Get various buffer metrics */
+ snd_pcm_hw_params_get_period_size( p_hw_params, &chunk_size, 0 );
+ snd_pcm_hw_params_get_buffer_size( p_hw_params, &buffer_size );
+ if (chunk_size == buffer_size)
+ {
+ msg_Err( p_demux, "ALSA: period cannot equal buffer size (%lu == %lu)",
+ chunk_size, buffer_size);
+ goto adev_fail;
+ }
+
+ int bits_per_sample = snd_pcm_format_physical_width(SND_PCM_FORMAT_S16_LE);
+ int bits_per_frame = bits_per_sample * channels;
+
+ p_sys->i_alsa_chunk_size = chunk_size;
+ p_sys->i_alsa_frame_size = (bits_per_sample / 8) * channels;
+ p_sys->i_audio_max_frame_size = chunk_size * bits_per_frame / 8;
+
+ snd_pcm_hw_params_free( p_hw_params );
+ p_hw_params = NULL;
+
+ /* Prep device */
+ if( ( i_err = snd_pcm_prepare( p_sys->p_alsa_pcm ) ) < 0 )
+ {
+ msg_Err( p_demux, "ALSA: cannot prepare audio interface for use (%s)",
+ snd_strerror( i_err ) );
+ goto adev_fail;
+ }
+
+ /* Return a fake handle so other tests work */
+ i_fd = 1;
- if( ioctl( i_fd, SNDCTL_DSP_SPEED,
- &p_sys->i_sample_rate ) < 0 )
+ }
+ else
+#endif /* HAVE_ALSA */
{
- msg_Err( p_demux, "cannot set audio sample rate (%m)" );
- goto adev_fail;
+ /* OSS */
+
+ if( (i_fd = open( psz_device, O_RDONLY | O_NONBLOCK )) < 0 )
+ {
+ msg_Err( p_demux, "cannot open OSS audio device (%m)" );
+ goto adev_fail;
+ }
+
+ i_format = AFMT_S16_LE;
+ if( ioctl( i_fd, SNDCTL_DSP_SETFMT, &i_format ) < 0
+ || i_format != AFMT_S16_LE )
+ {
+ msg_Err( p_demux, "cannot set audio format (16b little endian) "
+ "(%m)" );
+ goto adev_fail;
+ }
+
+ if( ioctl( i_fd, SNDCTL_DSP_STEREO,
+ &p_sys->b_stereo ) < 0 )
+ {
+ msg_Err( p_demux, "cannot set audio channels count (%m)" );
+ goto adev_fail;
+ }
+
+ if( ioctl( i_fd, SNDCTL_DSP_SPEED,
+ &p_sys->i_sample_rate ) < 0 )
+ {
+ msg_Err( p_demux, "cannot set audio sample rate (%m)" );
+ goto adev_fail;
+ }
+
+ p_sys->i_audio_max_frame_size = 6 * 1024;
}
msg_Dbg( p_demux, "opened adev=`%s' %s %dHz",
psz_device, p_sys->b_stereo ? "stereo" : "mono",
p_sys->i_sample_rate );
- p_sys->i_audio_max_frame_size = 6 * 1024;
-
es_format_t fmt;
es_format_Init( &fmt, AUDIO_ES, VLC_FOURCC('a','r','a','w') );
fmt.audio.i_channels = p_sys->b_stereo ? 2 : 1;
fmt.audio.i_rate = p_sys->i_sample_rate;
- fmt.audio.i_bitspersample = 16; /* FIXME ? */
+ fmt.audio.i_bitspersample = 16;
fmt.audio.i_blockalign = fmt.audio.i_channels * fmt.audio.i_bitspersample / 8;
fmt.i_bitrate = fmt.audio.i_channels * fmt.audio.i_rate * fmt.audio.i_bitspersample;
p_sys->p_es_audio = es_out_Add( p_demux->out, &fmt );
+#ifdef HAVE_ALSA
+ free( psz_alsa_device_name );
+#endif
+
return i_fd;
adev_fail:
if( i_fd >= 0 ) close( i_fd );
+
+#ifdef HAVE_ALSA
+ if( p_hw_params ) snd_pcm_hw_params_free( p_hw_params );
+ if( p_sys->p_alsa_pcm ) snd_pcm_close( p_sys->p_alsa_pcm );
+ free( psz_alsa_device_name );
+#endif
+
return -1;
}
if( p_sys->dev_cap.capabilities & V4L2_CAP_VIDEO_CAPTURE )
{
- while( ioctl( i_fd, VIDIOC_S_INPUT, &p_sys->i_input ) >= 0 )
+ struct v4l2_input t_input;
+ t_input.index = 0;
+ while( ioctl( i_fd, VIDIOC_ENUMINPUT, &t_input ) >= 0 )
{
p_sys->i_input++;
+ t_input.index = p_sys->i_input;
}
p_sys->p_inputs = calloc( 1, p_sys->i_input * sizeof( struct v4l2_input ) );
}
/* Probe audio inputs */
-
if( p_sys->dev_cap.capabilities & V4L2_CAP_AUDIO )
{
while( p_sys->i_audio < 32 &&
}
}
+ /* List tuner caps */
if( p_sys->dev_cap.capabilities & V4L2_CAP_TUNER )
{
struct v4l2_tuner tuner;
-
memset( &tuner, 0, sizeof(tuner) );
- while( ioctl( i_fd, VIDIOC_S_TUNER, &tuner ) >= 0 )
+ while( ioctl( i_fd, VIDIOC_G_TUNER, &tuner ) >= 0 )
{
p_sys->i_tuner++;
+ memset( &tuner, 0, sizeof(tuner) );
tuner.index = p_sys->i_tuner;
}
{
b_codec_supported = VLC_TRUE;
- char psz_fourcc[5];
- memset( &psz_fourcc, 0, sizeof( psz_fourcc ) );
- vlc_fourcc_to_char( v4l2chroma_to_fourcc[i].i_fourcc, &psz_fourcc );
+ char sz_fourcc[5];
+ memset( &sz_fourcc, 0, sizeof( sz_fourcc ) );
+ vlc_fourcc_to_char( v4l2chroma_to_fourcc[i].i_fourcc, &sz_fourcc );
msg_Dbg( p_demux, "device supports chroma %4s [%s]",
- psz_fourcc,
+ sz_fourcc,
p_sys->p_codecs[i_index].description );
#ifdef VIDIOC_ENUM_FRAMESIZES
frmsize.pixel_format = p_sys->p_codecs[i_index].pixelformat;
if( ioctl( i_fd, VIDIOC_ENUM_FRAMESIZES, &frmsize ) < 0 )
{
- msg_Err( p_demux, "Error while querying for frame size" );
+ /* Not all devices support this ioctl */
+ msg_Warn( p_demux, "Unable to query for frame sizes" );
}
else
{
int i_fd = 0;
int i_caps;
- if( ( i_fd = open( psz_device, O_RDONLY | O_NONBLOCK ) ) < 0 )
+#ifdef HAVE_ALSA
+ demux_sys_t *p_sys = p_demux->p_sys;
+
+ if( p_sys->b_use_alsa )
{
- msg_Err( p_demux, "cannot open audio device (%m)" );
- goto open_failed;
- }
+ /* ALSA */
+
+ int i_err;
+ snd_pcm_t *p_alsa_pcm;
+ char* psz_alsa_device_name = ResolveALSADeviceName( psz_device );
+
+ if( ( i_err = snd_pcm_open( &p_alsa_pcm, psz_alsa_device_name, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK ) ) < 0 )
+ {
+ msg_Err( p_demux, "cannot open device %s for ALSA audio (%s)", psz_alsa_device_name, snd_strerror( i_err ) );
+ free( psz_alsa_device_name );
+ goto open_failed;
+ }
- /* this will fail if the device is video */
- if( ioctl( i_fd, SNDCTL_DSP_GETCAPS, &i_caps ) < 0 )
+ snd_pcm_close( p_alsa_pcm );
+ free( psz_alsa_device_name );
+ }
+ else
+#endif /* HAVE_ALSA */
{
- msg_Err( p_demux, "cannot get audio caps (%m)" );
- goto open_failed;
+ /* OSS */
+
+ if( ( i_fd = open( psz_device, O_RDONLY | O_NONBLOCK ) ) < 0 )
+ {
+ msg_Err( p_demux, "cannot open device %s for OSS audio (%m)", psz_device );
+ goto open_failed;
+ }
+
+ /* this will fail if the device is video */
+ if( ioctl( i_fd, SNDCTL_DSP_GETCAPS, &i_caps ) < 0 )
+ {
+ msg_Err( p_demux, "cannot get audio caps (%m)" );
+ goto open_failed;
+ }
+
+ if( i_fd >= 0 ) close( i_fd );
}
- if( i_fd >= 0 ) close( i_fd );
return VLC_TRUE;
open_failed:
}
+/*****************************************************************************
+ * List available controls
+ *****************************************************************************/
+static void VideoControlListPrint( demux_t *p_demux, int i_fd,
+ struct v4l2_queryctrl queryctrl,
+ vlc_bool_t b_reset )
+{
+ struct v4l2_querymenu querymenu;
+ unsigned int i_mid;
+
+ int i;
+ int i_val;
+
+ char *psz_name;
+ vlc_value_t val, val2;
+
+ if( queryctrl.flags & V4L2_CTRL_FLAG_GRABBED )
+ msg_Dbg( p_demux, " control is busy" );
+ if( queryctrl.flags & V4L2_CTRL_FLAG_READ_ONLY )
+ msg_Dbg( p_demux, " control is read-only" );
+
+ for( i = 0; controls[i].psz_name != NULL; i++ )
+ if( controls[i].i_cid == queryctrl.id ) break;
+
+ if( controls[i].psz_name )
+ {
+ psz_name = strdup( controls[i].psz_name );
+ char psz_cfg_name[40];
+ sprintf( psz_cfg_name, CFG_PREFIX "%s", psz_name );
+ i_val = var_CreateGetInteger( p_demux, psz_cfg_name );
+ var_Destroy( p_demux, psz_cfg_name );
+ }
+ else
+ {
+ char *psz_buf;
+ psz_name = strdup( (const char *)queryctrl.name );
+ for( psz_buf = psz_name; *psz_buf; psz_buf++ )
+ {
+ if( *psz_buf == ' ' ) *psz_buf = '-';
+ }
+ i_val = -1;
+ }
+
+ switch( queryctrl.type )
+ {
+ case V4L2_CTRL_TYPE_INTEGER:
+ msg_Dbg( p_demux, " integer control" );
+ msg_Dbg( p_demux,
+ " valid values: %d to %d by steps of %d",
+ queryctrl.minimum, queryctrl.maximum,
+ queryctrl.step );
+
+ var_Create( p_demux, psz_name,
+ VLC_VAR_INTEGER | VLC_VAR_HASMIN | VLC_VAR_HASMAX
+ | VLC_VAR_HASSTEP | VLC_VAR_ISCOMMAND );
+ val.i_int = queryctrl.minimum;
+ var_Change( p_demux, psz_name, VLC_VAR_SETMIN, &val, NULL );
+ val.i_int = queryctrl.maximum;
+ var_Change( p_demux, psz_name, VLC_VAR_SETMAX, &val, NULL );
+ val.i_int = queryctrl.step;
+ var_Change( p_demux, psz_name, VLC_VAR_SETSTEP, &val, NULL );
+ break;
+ case V4L2_CTRL_TYPE_BOOLEAN:
+ msg_Dbg( p_demux, " boolean control" );
+ var_Create( p_demux, psz_name,
+ VLC_VAR_BOOL | VLC_VAR_ISCOMMAND );
+ break;
+ case V4L2_CTRL_TYPE_MENU:
+ msg_Dbg( p_demux, " menu control" );
+ var_Create( p_demux, psz_name,
+ VLC_VAR_INTEGER | VLC_VAR_HASCHOICE
+ | VLC_VAR_ISCOMMAND );
+ memset( &querymenu, 0, sizeof( querymenu ) );
+ for( i_mid = queryctrl.minimum;
+ i_mid <= (unsigned)queryctrl.maximum;
+ i_mid++ )
+ {
+ querymenu.index = i_mid;
+ querymenu.id = queryctrl.id;
+ if( ioctl( i_fd, VIDIOC_QUERYMENU, &querymenu ) >= 0 )
+ {
+ msg_Dbg( p_demux, " %d: %s",
+ querymenu.index, querymenu.name );
+ val.i_int = querymenu.index;
+ val2.psz_string = (char *)querymenu.name;
+ var_Change( p_demux, psz_name,
+ VLC_VAR_ADDCHOICE, &val, &val2 );
+ }
+ }
+ break;
+ case V4L2_CTRL_TYPE_BUTTON:
+ msg_Dbg( p_demux, " button control" );
+ var_Create( p_demux, psz_name,
+ VLC_VAR_VOID | VLC_VAR_ISCOMMAND );
+ break;
+ default:
+ msg_Dbg( p_demux, " unknown control type (FIXME)" );
+ /* FIXME */
+ break;
+ }
+
+ switch( queryctrl.type )
+ {
+ case V4L2_CTRL_TYPE_INTEGER:
+ case V4L2_CTRL_TYPE_BOOLEAN:
+ case V4L2_CTRL_TYPE_MENU:
+ {
+ struct v4l2_control control;
+ msg_Dbg( p_demux, " default value: %d",
+ queryctrl.default_value );
+ memset( &control, 0, sizeof( control ) );
+ control.id = queryctrl.id;
+ if( ioctl( i_fd, VIDIOC_G_CTRL, &control ) >= 0 )
+ {
+ msg_Dbg( p_demux, " current value: %d", control.value );
+ }
+ if( i_val == -1 )
+ {
+ i_val = control.value;
+ if( b_reset && queryctrl.default_value != control.value )
+ {
+ msg_Dbg( p_demux, " reset value to default" );
+ VideoControl( p_demux, i_fd, psz_name,
+ queryctrl.id, queryctrl.default_value );
+ }
+ }
+ else
+ {
+ VideoControl( p_demux, i_fd, psz_name,
+ queryctrl.id, i_val );
+ }
+ }
+ break;
+ default:
+ break;
+ }
+
+ val.psz_string = (char *)queryctrl.name;
+ var_Change( p_demux, psz_name, VLC_VAR_SETTEXT, &val, NULL );
+ val.i_int = queryctrl.id;
+ val2.psz_string = (char *)psz_name;
+ var_Change( p_demux, "controls", VLC_VAR_ADDCHOICE, &val, &val2 );
+
+ switch( var_Type( p_demux, psz_name ) & VLC_VAR_TYPE )
+ {
+ case VLC_VAR_BOOL:
+ var_SetBool( p_demux, psz_name, i_val );
+ break;
+ case VLC_VAR_INTEGER:
+ var_SetInteger( p_demux, psz_name, i_val );
+ break;
+ case VLC_VAR_VOID:
+ break;
+ default:
+ msg_Warn( p_demux, "FIXME: %s %s %d", __FILE__, __func__,
+ __LINE__ );
+ break;
+ }
+
+ var_AddCallback( p_demux, psz_name,
+ VideoControlCallback, (void*)queryctrl.id );
+
+ free( psz_name );
+}
+
+static int VideoControlList( demux_t *p_demux, int i_fd, vlc_bool_t b_reset )
+{
+ struct v4l2_queryctrl queryctrl;
+ int i_cid;
+
+ memset( &queryctrl, 0, sizeof( queryctrl ) );
+
+ /* A list of available controls (aka the variable name) will be
+ * stored as choices in the "controls" variable. We'll thus be able
+ * to use those to create an appropriate interface */
+ var_Create( p_demux, "controls", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
+
+ /* List public controls */
+ for( i_cid = V4L2_CID_BASE;
+ i_cid < V4L2_CID_LASTP1;
+ i_cid ++ )
+ {
+ queryctrl.id = i_cid;
+ if( ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
+ {
+ if( queryctrl.flags & V4L2_CTRL_FLAG_DISABLED )
+ continue;
+ msg_Dbg( p_demux, "Available control: %s (%x)",
+ queryctrl.name, queryctrl.id );
+ VideoControlListPrint( p_demux, i_fd, queryctrl, b_reset );
+ }
+ }
+
+ /* List private controls */
+ for( i_cid = V4L2_CID_PRIVATE_BASE;
+ ;
+ i_cid ++ )
+ {
+ queryctrl.id = i_cid;
+ if( ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
+ {
+ if( queryctrl.flags & V4L2_CTRL_FLAG_DISABLED )
+ continue;
+ msg_Dbg( p_demux, "Available private control: %s (%x)",
+ queryctrl.name, queryctrl.id );
+ VideoControlListPrint( p_demux, i_fd, queryctrl, b_reset );
+ }
+ else
+ break;
+ }
+ return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * Issue video controls
+ *****************************************************************************/
+static int VideoControl( demux_t *p_demux, int i_fd,
+ const char *psz_name, int i_cid, int i_value )
+{
+ struct v4l2_queryctrl queryctrl;
+ struct v4l2_control control;
+
+ if( i_value == -1 )
+ return VLC_SUCCESS;
+
+ memset( &queryctrl, 0, sizeof( queryctrl ) );
+
+ queryctrl.id = i_cid;
+
+ if( ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) < 0
+ || queryctrl.flags & V4L2_CTRL_FLAG_DISABLED )
+ {
+ msg_Dbg( p_demux, "%s (%x) control is not supported.", psz_name,
+ i_cid );
+ return VLC_EGENERIC;
+ }
+
+ memset( &control, 0, sizeof( control ) );
+ control.id = i_cid;
+
+ if( i_value >= 0 )
+ {
+ control.value = i_value;
+ if( ioctl( i_fd, VIDIOC_S_CTRL, &control ) < 0 )
+ {
+ msg_Err( p_demux, "unable to set %s to %d (%m)", psz_name,
+ i_value );
+ return VLC_EGENERIC;
+ }
+ }
+ if( ioctl( i_fd, VIDIOC_G_CTRL, &control ) >= 0 )
+ {
+ vlc_value_t val;
+ msg_Dbg( p_demux, "video %s: %d", psz_name, control.value );
+ switch( var_Type( p_demux, psz_name ) & VLC_VAR_TYPE )
+ {
+ case VLC_VAR_BOOL:
+ val.b_bool = control.value;
+ var_Change( p_demux, psz_name, VLC_VAR_SETVALUE, &val, NULL );
+ break;
+ case VLC_VAR_INTEGER:
+ val.i_int = control.value;
+ var_Change( p_demux, psz_name, VLC_VAR_SETVALUE, &val, NULL );
+ break;
+ }
+ }
+ return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * On the fly change settings callback
+ *****************************************************************************/
+static int VideoControlCallback( vlc_object_t *p_this,
+ const char *psz_var, vlc_value_t oldval, vlc_value_t newval,
+ void *p_data )
+{
+ demux_t *p_demux = (demux_t*)p_this;
+ demux_sys_t *p_sys = p_demux->p_sys;
+ int i_cid = (int)p_data;
+
+ int i_fd = p_sys->i_fd_video;
+
+ if( i_fd < 0 )
+ return VLC_EGENERIC;
+
+ VideoControl( p_demux, i_fd, psz_var, i_cid, newval.i_int );
+
+ return VLC_EGENERIC;
+}
projects / vlc / blobdiff