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Commit f2268e41 authored by Antoine Cellerier's avatar Antoine Cellerier
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Remove Alsa and OSS support from v4l2 module.

parent 33b03f0e
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Showing with 79 additions and 810 deletions
modules/access/v4l2/v4l2.c
View file @ f2268e41
......@@ -27,11 +27,6 @@
/*
* 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
*/
/*****************************************************************************
......@@ -87,10 +82,6 @@ static void DemuxClose( vlc_object_t * );
static int AccessOpen ( vlc_object_t * );
static void AccessClose( vlc_object_t * );
#define DEV_TEXT N_("Device name")
#define DEV_LONGTEXT N_( \
"Name of the device to use. " \
"If you don't specify anything, /dev/video0 will be used.")
#define STANDARD_TEXT N_( "Standard" )
#define STANDARD_LONGTEXT N_( \
"Video standard (Default, SECAM, PAL, or NTSC)." )
......@@ -177,26 +168,6 @@ static void AccessClose( vlc_object_t * );
#define VCENTER_LONGTEXT N_( \
"Set the camera's vertical centering (if supported by the v4l2 driver)." )
#define ADEV_TEXT N_("Audio device name")
#ifndef HAVE_ALSA
#define ADEV_LONGTEXT N_( \
"Name of the audio device to use. " \
"If you don't specify anything, \"/dev/dsp\" will be used for OSS.")
#else
#define ADEV_LONGTEXT N_( \
"Name of the audio device to use. " \
"If you don't specify anything, \"/dev/dsp\" will be used for OSS, " \
"\"hw\" for Alsa.")
#endif
#define AUDIO_METHOD_TEXT N_( "Audio method" )
#ifndef HAVE_ALSA
#define AUDIO_METHOD_LONGTEXT N_( \
"Audio method to use: 0 to disable audio, 1 for OSS." )
#else
#define AUDIO_METHOD_LONGTEXT N_( \
"Audio method to use: 0 to disable audio, 1 for OSS, 2 for ALSA, " \
"3 for ALSA or OSS (ALSA is preferred)." )
#endif
#define AUDIO_VOLUME_TEXT N_( "Volume" )
#define AUDIO_VOLUME_LONGTEXT N_( \
"Volume of the audio input (if supported by the v4l2 driver)." )
......@@ -216,13 +187,6 @@ static void AccessClose( vlc_object_t * );
#define AUDIO_LOUDNESS_LONGTEXT N_( \
"Loudness of the audio input (if supported by the v4l2 driver)." )
#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 " \
......@@ -245,6 +209,11 @@ static void AccessClose( vlc_object_t * );
#define TUNER_AUDIO_MODE_LONGTEXT N_( \
"Tuner audio mono/stereo and track selection." )
#define AUDIO_DEPRECATED_ERROR N_( \
"Alsa or OSS audio capture in the v4l2 access is deprecated. " \
"please use 'v4l2:/""/ --input-slave alsa:/""/' or " \
"'v4l2:/""/ --input-slave oss:/""/' instead." )
typedef enum {
IO_METHOD_READ,
IO_METHOD_MMAP,
......@@ -273,13 +242,7 @@ static const char *const psz_tuner_audio_modes_list_text[] =
N_( "Second audio program (Analog TV tuners only)" ),
N_( "Primary language left, Secondary language right" ) };
#define FIND_VIDEO 1
#define FIND_AUDIO 2
#define AUDIO_METHOD_OSS 1
#define OSS_DEFAULT "/dev/dsp"
#define AUDIO_METHOD_ALSA 2
#define ALSA_DEFAULT "hw"
#define V4L2_DEFAULT "/dev/video0"
#define CFG_PREFIX "v4l2-"
vlc_module_begin ()
......@@ -289,8 +252,6 @@ vlc_module_begin ()
set_subcategory( SUBCAT_INPUT_ACCESS )
set_section( N_( "Video input" ), NULL )
add_string( CFG_PREFIX "dev", "/dev/video0", 0, DEV_TEXT, DEV_LONGTEXT,
false );
add_integer( CFG_PREFIX "standard", 0, NULL, STANDARD_TEXT,
STANDARD_LONGTEXT, false );
change_integer_list( i_standards_list, psz_standards_list_text, NULL );
......@@ -308,16 +269,6 @@ vlc_module_begin ()
add_integer( CFG_PREFIX "height", 0, NULL, HEIGHT_TEXT,
HEIGHT_LONGTEXT, true );
add_float( CFG_PREFIX "fps", 0, NULL, FPS_TEXT, FPS_LONGTEXT, true )
set_section( N_( "Audio input" ), NULL )
add_string( CFG_PREFIX "adev", NULL, 0, ADEV_TEXT, ADEV_LONGTEXT,
false );
add_integer( CFG_PREFIX "audio-method", AUDIO_METHOD_OSS|AUDIO_METHOD_ALSA,
NULL, AUDIO_METHOD_TEXT, AUDIO_METHOD_LONGTEXT, true );
add_bool( CFG_PREFIX "stereo", true, NULL, STEREO_TEXT, STEREO_LONGTEXT,
true );
add_integer( CFG_PREFIX "samplerate", 48000, NULL, SAMPLERATE_TEXT,
SAMPLERATE_LONGTEXT, true );
add_integer( CFG_PREFIX "caching", DEFAULT_PTS_DELAY / 1000, NULL,
CACHING_TEXT, CACHING_LONGTEXT, true );
......@@ -384,6 +335,13 @@ vlc_module_begin ()
add_string( CFG_PREFIX "set-ctrls", NULL, NULL, S_CTRLS_TEXT,
S_CTRLS_LONGTEXT, true );
add_obsolete_string( CFG_PREFIX "dev" );
add_obsolete_string( CFG_PREFIX "adev" );
add_obsolete_integer( CFG_PREFIX "audio-method" );
add_obsolete_bool( CFG_PREFIX "stereo" );
add_obsolete_integer( CFG_PREFIX "samplerate" );
add_shortcut( "v4l2" )
set_capability( "access_demux", 10 )
set_callbacks( DemuxOpen, DemuxClose )
......@@ -414,20 +372,13 @@ static ssize_t AccessRead( access_t *, uint8_t *, size_t );
static block_t* GrabVideo( demux_t *p_demux );
static block_t* ProcessVideoFrame( demux_t *p_demux, uint8_t *p_frame, size_t );
static block_t* GrabAudio( demux_t *p_demux );
static bool IsPixelFormatSupported( demux_t *p_demux,
unsigned int i_pixelformat );
#ifdef HAVE_ALSA
static char* ResolveALSADeviceName( const char *psz_device );
#endif
static int OpenVideoDev( vlc_object_t *, demux_sys_t *, bool );
static int OpenAudioDev( vlc_object_t *, demux_sys_t *, bool );
static bool ProbeVideoDev( vlc_object_t *, demux_sys_t *,
char *psz_device );
static bool ProbeAudioDev( vlc_object_t *, demux_sys_t *,
char *psz_device );
const char *psz_device );
static int ControlList( vlc_object_t *, int , bool, bool );
static int Control( vlc_object_t *, int i_fd,
......@@ -544,13 +495,8 @@ struct buffer_t
struct demux_sys_t
{
char *psz_device; /* Main device from MRL, can be video or audio */
char *psz_vdev;
int i_fd_video;
char *psz_adev;
int i_fd_audio;
char *psz_device; /* Main device from MRL */
int i_fd;
char *psz_requested_chroma;
......@@ -589,23 +535,7 @@ struct demux_sys_t
mtime_t i_video_pts; /* only used when f_fps > 0 */
int i_fourcc;
es_out_id_t *p_es_video;
/* Audio */
unsigned int i_sample_rate;
bool b_stereo;
size_t i_audio_max_frame_size;
block_t *p_block_audio;
es_out_id_t *p_es_audio;
int i_audio_method;
#ifdef HAVE_ALSA
/* ALSA Audio */
snd_pcm_t *p_alsa_pcm;
size_t i_alsa_frame_size;
int i_alsa_chunk_size;
#endif
es_out_id_t *p_es;
/* Tuner */
int i_cur_tuner;
......@@ -617,99 +547,18 @@ struct demux_sys_t
};
static int FindMainDevice( vlc_object_t *p_this, demux_sys_t *p_sys,
int i_flags, bool b_demux,
bool b_forced )
bool b_demux )
{
/* Find main device (video or audio) */
if( p_sys->psz_device && *p_sys->psz_device )
{
msg_Dbg( p_this, "main device='%s'", p_sys->psz_device );
bool b_maindevice_is_video = false;
/* Try to open as video device */
if( i_flags & FIND_VIDEO )
{
msg_Dbg( p_this, "trying device '%s' as video", p_sys->psz_device );
if( ProbeVideoDev( p_this, p_sys, p_sys->psz_device ) )
{
msg_Dbg( p_this, "'%s' is a video device", p_sys->psz_device );
/* Device was a video device */
free( p_sys->psz_vdev );
p_sys->psz_vdev = p_sys->psz_device;
p_sys->psz_device = NULL;
p_sys->i_fd_video = OpenVideoDev( p_this, p_sys, b_demux );
if( p_sys->i_fd_video < 0 )
return VLC_EGENERIC;
b_maindevice_is_video = true;
/* If successful we carry on to try the audio if access is forced */
}
}
/* Try to open as audio device only if main device was not detected as video above */
if( i_flags & FIND_AUDIO && !b_maindevice_is_video )
{
msg_Dbg( p_this, "trying device '%s' as audio", p_sys->psz_device );
if( ProbeAudioDev( p_this, p_sys, p_sys->psz_device ) )
{
msg_Dbg( p_this, "'%s' is an audio device", p_sys->psz_device );
/* Device was an audio device */
free( p_sys->psz_adev );
p_sys->psz_adev = p_sys->psz_device;
p_sys->psz_device = NULL;
p_sys->i_fd_audio = OpenAudioDev( p_this, p_sys, b_demux );
if( p_sys->i_fd_audio < 0 )
return VLC_EGENERIC;
/* If successful we carry on to try the video if access is forced */
}
}
}
/* If no device opened, only continue if the access was forced */
if( b_forced == false
&& !( ( i_flags & FIND_VIDEO && p_sys->i_fd_video >= 0 )
|| ( i_flags & FIND_AUDIO && p_sys->i_fd_audio >= 0 ) ) )
{
return VLC_EGENERIC;
}
/* Find video device */
if( i_flags & FIND_VIDEO && p_sys->i_fd_video < 0 )
{
if( !p_sys->psz_vdev || !*p_sys->psz_vdev )
{
free( p_sys->psz_vdev );
p_sys->psz_vdev = var_CreateGetString( p_this, "v4l2-dev" );
}
msg_Dbg( p_this, "opening '%s' as video", p_sys->psz_vdev );
if( p_sys->psz_vdev && *p_sys->psz_vdev
&& ProbeVideoDev( p_this, p_sys, p_sys->psz_vdev ) )
{
p_sys->i_fd_video = OpenVideoDev( p_this, p_sys, b_demux );
}
}
/* Find audio device */
if( i_flags & FIND_AUDIO && p_sys->i_fd_audio < 0 )
/* TODO: if using default device, loop through all /dev/video* until
* one works */
msg_Dbg( p_this, "opening device '%s'", p_sys->psz_device );
if( ProbeVideoDev( p_this, p_sys, p_sys->psz_device ) )
{
if( !p_sys->psz_adev )
{
p_sys->psz_adev = var_CreateGetNonEmptyString( p_this, "v4l2-adev" );
}
msg_Dbg( p_this, "opening '%s' as audio", p_sys->psz_adev );
if( ProbeAudioDev( p_this, p_sys, p_sys->psz_adev ) )
{
p_sys->i_fd_audio = OpenAudioDev( p_this, p_sys, b_demux );
}
msg_Dbg( p_this, "'%s' is a video device", p_sys->psz_device );
p_sys->i_fd = OpenVideoDev( p_this, p_sys, b_demux );
}
if( !( ( i_flags & FIND_VIDEO && p_sys->i_fd_video >= 0 )
|| ( i_flags & FIND_AUDIO && p_sys->i_fd_audio >= 0 ) ) )
{
return VLC_EGENERIC;
}
if( p_sys->i_fd < 0 ) return VLC_EGENERIC;
return VLC_SUCCESS;
}
......@@ -742,13 +591,7 @@ static int DemuxOpen( vlc_object_t *p_this )
ParseMRL( p_sys, p_demux->psz_path, (vlc_object_t *) p_demux );
#ifdef HAVE_ALSA
/* Alsa support available? */
msg_Dbg( p_demux, "ALSA input support available" );
#endif
if( FindMainDevice( p_this, p_sys, FIND_VIDEO|FIND_AUDIO,
true, !strncmp( p_demux->psz_access, "v4l2", 4 ) ) != VLC_SUCCESS )
if( FindMainDevice( p_this, p_sys, true ) != VLC_SUCCESS)
{
DemuxClose( p_this );
return VLC_EGENERIC;
......@@ -779,13 +622,8 @@ static void GetV4L2Params( demux_sys_t *p_sys, vlc_object_t *p_obj )
var_Create( p_obj, "v4l2-controls-reset", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
p_sys->f_fps = var_CreateGetFloat( p_obj, "v4l2-fps" );
p_sys->i_sample_rate = var_CreateGetInteger( p_obj, "v4l2-samplerate" );
p_sys->psz_requested_chroma = var_CreateGetString( p_obj, "v4l2-chroma" );
p_sys->i_audio_method = var_CreateGetInteger( p_obj, "v4l2-audio-method" );
p_sys->b_stereo = var_CreateGetBool( p_obj, "v4l2-stereo" );
p_sys->i_pts = var_CreateGetInteger( p_obj, "v4l2-caching" );
p_sys->i_cur_tuner = var_CreateGetInteger( p_obj, "v4l2-tuner" );
......@@ -794,12 +632,10 @@ static void GetV4L2Params( demux_sys_t *p_sys, vlc_object_t *p_obj )
p_sys->psz_set_ctrls = var_CreateGetString( p_obj, "v4l2-set-ctrls" );
p_sys->psz_device = p_sys->psz_vdev = p_sys->psz_adev = NULL;
p_sys->i_fd_video = -1;
p_sys->i_fd_audio = -1;
p_sys->psz_device = NULL;
p_sys->i_fd = -1;
p_sys->p_es_video = p_sys->p_es_audio = 0;
p_sys->p_block_audio = 0;
p_sys->p_es = NULL;
}
/*****************************************************************************
......@@ -822,30 +658,7 @@ static void ParseMRL( demux_sys_t *p_sys, char *psz_path, vlc_object_t *p_obj )
{
*psz_parser++ = '\0';
if( !strncmp( psz_parser, "adev=", strlen( "adev=" ) ) )
{
int i_len;
psz_parser += strlen( "adev=" );
if( strchr( psz_parser, ':' ) )
{
i_len = strchr( psz_parser, ':' ) - psz_parser;
}
else
{
i_len = strlen( psz_parser );
}
p_sys->psz_adev = strndup( psz_parser, i_len );
if( !*p_sys->psz_adev )
{
free( p_sys->psz_adev );
p_sys->psz_adev = NULL;
}
psz_parser += i_len;
}
else if( !strncmp( psz_parser, "standard=", strlen( "standard=" ) ) )
if( !strncmp( psz_parser, "standard=", strlen( "standard=" ) ) )
{
psz_parser += strlen( "standard=" );
if( !strncmp( psz_parser, "pal", strlen( "pal" ) ) )
......@@ -987,29 +800,6 @@ static void ParseMRL( demux_sys_t *p_sys, char *psz_path, vlc_object_t *p_obj )
&psz_parser, 0 ) );
}
#endif
else if( !strncmp( psz_parser, "samplerate=",
strlen( "samplerate=" ) ) )
{
p_sys->i_sample_rate =
strtol( psz_parser + strlen( "samplerate=" ),
&psz_parser, 0 );
}
else if( !strncmp( psz_parser, "audio-method", strlen( "audio-method" ) ) )
{
p_sys->i_audio_method =
strtol( psz_parser + strlen( "audio-method" ),
&psz_parser, 0 );
}
else if( !strncmp( psz_parser, "stereo", strlen( "stereo" ) ) )
{
psz_parser += strlen( "stereo" );
p_sys->b_stereo = true;
}
else if( !strncmp( psz_parser, "mono", strlen( "mono" ) ) )
{
psz_parser += strlen( "mono" );
p_sys->b_stereo = false;
}
else if( !strncmp( psz_parser, "caching=", strlen( "caching=" ) ) )
{
p_sys->i_pts = strtol( psz_parser + strlen( "caching=" ),
......@@ -1050,6 +840,23 @@ static void ParseMRL( demux_sys_t *p_sys, char *psz_path, vlc_object_t *p_obj )
psz_parser += i_len;
}
else if( !strncmp( psz_parser, "adev=", strlen( "adev=" ) )
|| !strncmp( psz_parser, "samplerate=", strlen( "samplerate=" ) )
|| !strncmp( psz_parser, "audio-method", strlen( "audio-method" ) )
|| !strncmp( psz_parser, "stereo", strlen( "stereo" ) )
|| !strncmp( psz_parser, "mono", strlen( "mono" ) ) )
{
if( strchr( psz_parser, ':' ) )
{
psz_parser = strchr( psz_parser, ':' );
}
else
{
psz_parser += strlen( psz_parser );
}
msg_Err( p_obj, AUDIO_DEPRECATED_ERROR );
}
else
{
char *psz_unk = strchr( psz_parser, ':' );
......@@ -1075,9 +882,9 @@ static void ParseMRL( demux_sys_t *p_sys, char *psz_path, vlc_object_t *p_obj )
/* Main device */
if( *psz_dup )
{
p_sys->psz_device = strdup( psz_dup );
}
else
p_sys->psz_device = strdup( V4L2_DEFAULT );
free( psz_dup );
}
......@@ -1102,7 +909,7 @@ static void DemuxClose( vlc_object_t *p_this )
demux_sys_t *p_sys = p_demux->p_sys;
/* Stop video capture */
if( p_sys->i_fd_video >= 0 )
if( p_sys->i_fd >= 0 )
{
switch( p_sys->io )
{
......@@ -1119,11 +926,11 @@ static void DemuxClose( vlc_object_t *p_this )
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = ( p_sys->io == IO_METHOD_USERPTR ) ?
V4L2_MEMORY_USERPTR : V4L2_MEMORY_MMAP;
v4l2_ioctl( p_sys->i_fd_video, VIDIOC_DQBUF, &buf ); /* ignore result */
v4l2_ioctl( p_sys->i_fd, VIDIOC_DQBUF, &buf ); /* ignore result */
}
buf_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if( v4l2_ioctl( p_sys->i_fd_video, VIDIOC_STREAMOFF, &buf_type ) < 0 ) {
if( v4l2_ioctl( p_sys->i_fd, VIDIOC_STREAMOFF, &buf_type ) < 0 ) {
msg_Err( p_this, "VIDIOC_STREAMOFF failed" );
}
......@@ -1166,20 +973,8 @@ static void CommonClose( vlc_object_t *p_this, demux_sys_t *p_sys )
{
(void)p_this;
/* Close */
if( p_sys->i_fd_video >= 0 ) v4l2_close( p_sys->i_fd_video );
#ifdef HAVE_ALSA
if( p_sys->p_alsa_pcm )
{
snd_pcm_close( p_sys->p_alsa_pcm );
p_sys->i_fd_audio = -1;
}
#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->i_fd >= 0 ) v4l2_close( p_sys->i_fd );
free( p_sys->psz_device );
free( p_sys->psz_vdev );
free( p_sys->psz_adev );
free( p_sys->p_standards );
free( p_sys->p_inputs );
free( p_sys->p_tuners );
......@@ -1224,8 +1019,7 @@ static int AccessOpen( vlc_object_t * p_this )
ParseMRL( p_sys, p_access->psz_path, (vlc_object_t *) p_access );
if( FindMainDevice( p_this, p_sys, FIND_VIDEO,
false, !strncmp( p_access->psz_access, "v4l2", 4 ) ) != VLC_SUCCESS )
if( FindMainDevice( p_this, p_sys, false ) != VLC_SUCCESS )
{
AccessClose( p_this );
return VLC_EGENERIC;
......@@ -1340,7 +1134,7 @@ static ssize_t AccessRead( access_t * p_access, uint8_t * p_buffer, size_t i_len
struct pollfd ufd;
int i_ret;
ufd.fd = p_sys->i_fd_video;
ufd.fd = p_sys->i_fd;
ufd.events = POLLIN;
if( p_access->info.b_eof )
......@@ -1361,7 +1155,7 @@ static ssize_t AccessRead( access_t * p_access, uint8_t * p_buffer, size_t i_len
return -1;
}
i_ret = v4l2_read( p_sys->i_fd_video, p_buffer, i_len );
i_ret = v4l2_read( p_sys->i_fd, p_buffer, i_len );
if( i_ret == 0 )
{
p_access->info.b_eof = true;
......@@ -1380,59 +1174,26 @@ static ssize_t AccessRead( access_t * p_access, uint8_t * p_buffer, size_t i_len
static int Demux( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
es_out_id_t *p_es = p_sys->p_es_audio;
block_t *p_block = NULL;
struct pollfd p_fd[2];
int i_fd = 0;
memset( p_fd, 0, 2 * sizeof( struct pollfd ) );
if( p_sys->i_fd_video )
{
p_fd[i_fd].fd = p_sys->i_fd_video;
p_fd[i_fd].events = POLLIN|POLLPRI;
i_fd ++;
}
if( p_sys->i_fd_audio )
{
p_fd[i_fd].fd = p_sys->i_fd_audio;
p_fd[i_fd].events = POLLIN|POLLPRI;
i_fd ++;
}
struct pollfd fd;
fd.fd = p_sys->i_fd;
fd.events = POLLIN|POLLPRI;
fd.revents = 0;
/* Wait for data */
if( poll( p_fd, i_fd, 500 ) ) /* Timeout after 0.5 seconds since I don't know if pf_demux can be blocking. */
if( poll( &fd, 1, 500 ) ) /* Timeout after 0.5 seconds since I don't know if pf_demux can be blocking. */
{
for( i_fd --; i_fd >= 0; i_fd -- )
if( fd.revents & (POLLIN|POLLPRI) )
{
if( p_fd[i_fd].revents & (POLLIN|POLLPRI) )
block_t *p_block = GrabVideo( p_demux );
if( p_block )
{
if( p_fd[i_fd].fd == p_sys->i_fd_video )
{
p_block = GrabVideo( p_demux );
p_es = p_sys->p_es_video;
}
else /* audio */
{
p_block = GrabAudio( p_demux );
p_es = p_sys->p_es_audio;
}
break;
es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_block->i_pts );
es_out_Send( p_demux->out, p_sys->p_es, p_block );
}
}
}
if( !p_block )
{
/* Looks like poll timed out ...
* ... or returned an error on one of the fds.
* TODO: process */
return 1;
}
assert( p_es );
es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_block->i_pts );
es_out_Send( p_demux->out, p_es, p_block );
return 1;
}
......@@ -1459,7 +1220,7 @@ static block_t* GrabVideo( demux_t *p_demux )
switch( p_sys->io )
{
case IO_METHOD_READ:
i_ret = v4l2_read( p_sys->i_fd_video, p_sys->p_buffers[0].start, p_sys->p_buffers[0].length );
i_ret = v4l2_read( p_sys->i_fd, p_sys->p_buffers[0].start, p_sys->p_buffers[0].length );
if( i_ret == -1 )
{
switch( errno )
......@@ -1486,7 +1247,7 @@ static block_t* GrabVideo( demux_t *p_demux )
buf.memory = V4L2_MEMORY_MMAP;
/* Wait for next frame */
if (v4l2_ioctl( p_sys->i_fd_video, VIDIOC_DQBUF, &buf ) < 0 )
if (v4l2_ioctl( p_sys->i_fd, VIDIOC_DQBUF, &buf ) < 0 )
{
switch( errno )
{
......@@ -1510,7 +1271,7 @@ static block_t* GrabVideo( demux_t *p_demux )
if( !p_block ) return 0;
/* Unlock */
if( v4l2_ioctl( p_sys->i_fd_video, VIDIOC_QBUF, &buf ) < 0 )
if( v4l2_ioctl( p_sys->i_fd, VIDIOC_QBUF, &buf ) < 0 )
{
msg_Err( p_demux, "Failed to unlock (VIDIOC_QBUF)" );
block_Release( p_block );
......@@ -1525,7 +1286,7 @@ static block_t* GrabVideo( demux_t *p_demux )
buf.memory = V4L2_MEMORY_USERPTR;
/* Wait for next frame */
if (v4l2_ioctl( p_sys->i_fd_video, VIDIOC_DQBUF, &buf ) < 0 )
if (v4l2_ioctl( p_sys->i_fd, VIDIOC_DQBUF, &buf ) < 0 )
{
switch( errno )
{
......@@ -1558,7 +1319,7 @@ static block_t* GrabVideo( demux_t *p_demux )
if( !p_block ) return 0;
/* Unlock */
if( v4l2_ioctl( p_sys->i_fd_video, VIDIOC_QBUF, &buf ) < 0 )
if( v4l2_ioctl( p_sys->i_fd, VIDIOC_QBUF, &buf ) < 0 )
{
msg_Err( p_demux, "Failed to unlock (VIDIOC_QBUF)" );
block_Release( p_block );
......@@ -1598,119 +1359,6 @@ static block_t* ProcessVideoFrame( demux_t *p_demux, uint8_t *p_frame, size_t i_
return p_block;
}
/*****************************************************************************
* GrabAudio: Grab an audio frame
*****************************************************************************/
static block_t* GrabAudio( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
struct audio_buf_info buf_info;
int i_read = 0, i_correct;
block_t *p_block;
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 );
if( !p_block )
{
msg_Warn( p_demux, "cannot get block" );
return 0;
}
p_sys->p_block_audio = p_block;
#ifdef HAVE_ALSA
if( p_sys->i_audio_method & AUDIO_METHOD_ALSA )
{
/* ALSA */
i_read = snd_pcm_readi( p_sys->p_alsa_pcm, p_block->p_buffer, p_sys->i_alsa_chunk_size );
if( i_read <= 0 )
{
int i_resume;
switch( i_read )
{
case -EAGAIN:
break;
case -EPIPE:
/* xrun */
snd_pcm_prepare( p_sys->p_alsa_pcm );
break;
case -ESTRPIPE:
/* suspend */
i_resume = snd_pcm_resume( p_sys->p_alsa_pcm );
if( i_resume < 0 && i_resume != -EAGAIN ) snd_pcm_prepare( p_sys->p_alsa_pcm );
break;
default:
msg_Err( p_demux, "Failed to read alsa frame (%s)", snd_strerror( i_read ) );
return 0;
}
}
else
{
/* convert from frames to bytes */
i_read *= p_sys->i_alsa_frame_size;
}
}
else
#endif
if( p_sys->i_audio_method & AUDIO_METHOD_OSS )
{
/* 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;
p_block->i_buffer = i_read;
p_sys->p_block_audio = 0;
/* Correct the date because of kernel buffering */
i_correct = i_read;
if( p_sys->i_audio_method & AUDIO_METHOD_OSS )
{
/* OSS */
if( ioctl( p_sys->i_fd_audio, SNDCTL_DSP_GETISPACE, &buf_info ) == 0 )
{
i_correct += buf_info.bytes;
}
}
#ifdef HAVE_ALSA
else if( p_sys->i_audio_method & AUDIO_METHOD_ALSA )
{
/* ALSA */
int i_err;
snd_pcm_sframes_t delay = 0;
if( ( i_err = snd_pcm_delay( p_sys->p_alsa_pcm, &delay ) ) >= 0 )
{
size_t 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 (%zu > %zu)",
i_correction_delta, p_sys->i_audio_max_frame_size );
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 =
mdate() - INT64_C(1000000) * (mtime_t)i_correct /
2 / ( p_sys->b_stereo ? 2 : 1) / p_sys->i_sample_rate;
return p_block;
}
/*****************************************************************************
* Helper function to initalise video IO using the Read method
*****************************************************************************/
......@@ -1863,7 +1511,7 @@ static int OpenVideoDev( vlc_object_t *p_obj, demux_sys_t *p_sys, bool b_demux )
struct v4l2_format fmt;
unsigned int i_min;
enum v4l2_buf_type buf_type;
char *psz_device = p_sys->psz_vdev;
const char *psz_device = p_sys->psz_device;
es_format_t es_fmt;
int libv4l2_fd;
......@@ -2205,7 +1853,7 @@ static int OpenVideoDev( vlc_object_t *p_obj, demux_sys_t *p_sys, bool b_demux )
msg_Dbg( p_demux, "added new video es %4.4s %dx%d",
(char*)&es_fmt.i_codec, es_fmt.video.i_width, es_fmt.video.i_height );
p_sys->p_es_video = es_out_Add( p_demux->out, &es_fmt );
p_sys->p_es = es_out_Add( p_demux->out, &es_fmt );
/* Start Capture */
......@@ -2284,313 +1932,11 @@ open_failed:
}
#ifdef HAVE_ALSA
/*****************************************************************************
* ResolveALSADeviceName: Change any . to : in the ALSA device name
*****************************************************************************/
static char *ResolveALSADeviceName( const 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
*****************************************************************************/
#ifdef HAVE_ALSA
static int OpenAudioDevAlsa( vlc_object_t *p_this, demux_sys_t *p_sys )
{
char *psz_device = p_sys->psz_adev;
p_sys->p_alsa_pcm = NULL;
char* psz_alsa_device_name = NULL;
snd_pcm_hw_params_t *p_hw_params = NULL;
snd_pcm_uframes_t buffer_size;
snd_pcm_uframes_t chunk_size;
/* ALSA */
int i_err;
psz_alsa_device_name =
ResolveALSADeviceName( psz_device?: ALSA_DEFAULT );
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_this, "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_this, "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_this,
"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_this,
"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_this, "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_this, "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_this, "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_this, "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_this, "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_this, "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_this, "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_this, "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_this, "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_this,
"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_frame / 8;
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_this,
"ALSA: cannot prepare audio interface for use (%s)",
snd_strerror( i_err ) );
goto adev_fail;
}
free( psz_alsa_device_name );
if( !p_sys->psz_adev )
p_sys->psz_adev = strdup( ALSA_DEFAULT );
/* Return a fake handle so other tests work */
return 1;
adev_fail:
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 );
return -1;
}
#endif
static int OpenAudioDevOss( vlc_object_t *p_this, demux_sys_t *p_sys )
{
int i_fd = 0;
int i_format;
/* OSS */
char* psz_oss_device_name = strdup( p_sys->psz_adev ? p_sys->psz_adev : OSS_DEFAULT );
if( (i_fd = open( psz_oss_device_name, O_RDONLY | O_NONBLOCK )) < 0 )
{
msg_Err( p_this, "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_this,
"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_this, "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_this, "cannot set audio sample rate (%m)" );
goto adev_fail;
}
p_sys->i_audio_max_frame_size = 6 * 1024;
if( !p_sys->psz_adev )
p_sys->psz_adev = strdup( OSS_DEFAULT );
free( psz_oss_device_name );
return i_fd;
adev_fail:
free( psz_oss_device_name );
if( i_fd >= 0 ) close( i_fd );
return -1;
}
static int OpenAudioDev( vlc_object_t *p_this, demux_sys_t *p_sys,
bool b_demux )
{
char *psz_device;
int i_fd = -1;
#ifdef HAVE_ALSA
if( ( p_sys->i_audio_method & AUDIO_METHOD_ALSA ) && i_fd < 0 )
i_fd = OpenAudioDevAlsa( p_this, p_sys );
#endif
if( ( p_sys->i_audio_method & AUDIO_METHOD_OSS ) && i_fd < 0 )
i_fd = OpenAudioDevOss( p_this, p_sys );
if( i_fd < 0 )
return i_fd;
psz_device = p_sys->psz_adev;
msg_Dbg( p_this, "opened adev=`%s' %s %dHz",
psz_device, p_sys->b_stereo ? "stereo" : "mono",
p_sys->i_sample_rate );
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;
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;
msg_Dbg( p_this, "new audio es %d channels %dHz",
fmt.audio.i_channels, fmt.audio.i_rate );
if( b_demux )
{
demux_t *p_demux = (demux_t *)p_this;
p_sys->p_es_audio = es_out_Add( p_demux->out, &fmt );
}
return i_fd;
}
/*****************************************************************************
* ProbeVideoDev: probe video for capabilities
*****************************************************************************/
static bool ProbeVideoDev( vlc_object_t *p_obj, demux_sys_t *p_sys,
char *psz_device )
const char *psz_device )
{
int i_index;
int i_standard;
......@@ -2600,7 +1946,7 @@ static bool ProbeVideoDev( vlc_object_t *p_obj, demux_sys_t *p_sys,
if( ( i_fd = open( psz_device, O_RDWR ) ) < 0 )
{
msg_Err( p_obj, "cannot open video device (%m)" );
msg_Err( p_obj, "cannot open video device '%s' (%m)", psz_device );
goto open_failed;
}
......@@ -2921,83 +2267,6 @@ open_failed:
}
/*****************************************************************************
* ProbeAudioDev: probe audio for capabilities
*****************************************************************************/
#ifdef HAVE_ALSA
static bool ProbeAudioDevAlsa( vlc_object_t *p_this, char *psz_device )
{
int i_err;
snd_pcm_t *p_alsa_pcm;
char* psz_alsa_device_name = ResolveALSADeviceName( psz_device ?: ALSA_DEFAULT );
if( ( i_err = snd_pcm_open( &p_alsa_pcm, psz_alsa_device_name, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK ) ) < 0 )
{
msg_Err( p_this, "cannot open device %s for ALSA audio (%s)", psz_alsa_device_name, snd_strerror( i_err ) );
free( psz_alsa_device_name );
return false;
}
snd_pcm_close( p_alsa_pcm );
free( psz_alsa_device_name );
return true;
}
#endif
static bool ProbeAudioDevOss( vlc_object_t *p_this, char *psz_device )
{
int i_fd = 0;
int i_caps;
char* psz_oss_device_name = strdup( psz_device ? psz_device : OSS_DEFAULT );
if( ( i_fd = open( psz_oss_device_name, O_RDONLY | O_NONBLOCK ) ) < 0 )
{
msg_Err( p_this, "cannot open device %s for OSS audio (%m)", psz_oss_device_name );
goto open_failed;
}
/* this will fail if the device is video */
if( ioctl( i_fd, SNDCTL_DSP_GETCAPS, &i_caps ) < 0 )
{
msg_Err( p_this, "cannot get audio caps (%m)" );
goto open_failed;
}
free( psz_oss_device_name );
if( i_fd >= 0 ) close( i_fd );
return true;
open_failed:
free( psz_oss_device_name );
if( i_fd >= 0 ) close( i_fd );
return false;
}
static bool ProbeAudioDev( vlc_object_t *p_this, demux_sys_t *p_sys,
char *psz_device )
{
#ifdef HAVE_ALSA
if( ( p_sys->i_audio_method & AUDIO_METHOD_ALSA )
&& ProbeAudioDevAlsa( p_this, psz_device ) )
{
p_sys->i_audio_method = AUDIO_METHOD_ALSA;
return true;
}
#endif
if( ( p_sys->i_audio_method & AUDIO_METHOD_OSS )
&& ProbeAudioDevOss( p_this, psz_device ) )
{
p_sys->i_audio_method = AUDIO_METHOD_OSS;
return true;
}
p_sys->i_audio_method = 0;
return false;
}
static void name2var( unsigned char *name )
{
for( ; *name; name++ )
......@@ -3550,7 +2819,7 @@ static int DemuxControlCallback( vlc_object_t *p_this,
demux_sys_t *p_sys = p_demux->p_sys;
int i_cid = (long int)p_data;
int i_fd = p_sys->i_fd_video;
int i_fd = p_sys->i_fd;
if( i_fd < 0 )
return VLC_EGENERIC;
......@@ -3567,7 +2836,7 @@ static int DemuxControlResetCallback( vlc_object_t *p_this,
demux_t *p_demux = (demux_t*)p_this;
demux_sys_t *p_sys = p_demux->p_sys;
int i_fd = p_sys->i_fd_video;
int i_fd = p_sys->i_fd;
if( i_fd < 0 )
return VLC_EGENERIC;
......@@ -3586,7 +2855,7 @@ static int AccessControlCallback( vlc_object_t *p_this,
demux_sys_t *p_sys = (demux_sys_t *) p_access->p_sys;
int i_cid = (long int)p_data;
int i_fd = p_sys->i_fd_video;
int i_fd = p_sys->i_fd;
if( i_fd < 0 )
return VLC_EGENERIC;
......@@ -3603,7 +2872,7 @@ static int AccessControlResetCallback( vlc_object_t *p_this,
access_t *p_access = (access_t *)p_this;
demux_sys_t *p_sys = (demux_sys_t *) p_access->p_sys;
int i_fd = p_sys->i_fd_video;
int i_fd = p_sys->i_fd;
if( i_fd < 0 )
return VLC_EGENERIC;
......
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