/**
* Prints two formats in a human-readable form
*/
void aout_FormatsPrint( vlc_object_t *obj, const char * psz_text,
const audio_sample_format_t * p_format1,
const audio_sample_format_t * p_format2 )
{
msg_Dbg( obj, "%s '%4.4s'->'%4.4s' %u Hz->%u Hz %s->%s",
psz_text,
(char *)&p_format1->i_format, (char *)&p_format2->i_format,
p_format1->i_rate, p_format2->i_rate,
aout_FormatPrintChannels( p_format1 ),
aout_FormatPrintChannels( p_format2 ) );
}
/*****************************************************************************
* aout_FormatsPrint : print two formats in a human-readable form
*****************************************************************************/
void aout_FormatsPrint( aout_instance_t * p_aout, const char * psz_text,
const audio_sample_format_t * p_format1,
const audio_sample_format_t * p_format2 )
{
msg_Dbg( p_aout, "%s '%4.4s'->'%4.4s' %d Hz->%d Hz %s->%s",
psz_text,
(char *)&p_format1->i_format, (char *)&p_format2->i_format,
p_format1->i_rate, p_format2->i_rate,
aout_FormatPrintChannels( p_format1 ),
aout_FormatPrintChannels( p_format2 ) );
}
/*****************************************************************************
* aout_FormatPrint : print a format in a human-readable form
*****************************************************************************/
void aout_FormatPrint( aout_instance_t * p_aout, const char * psz_text,
const audio_sample_format_t * p_format )
{
msg_Dbg( p_aout, "%s '%4.4s' %d Hz %s frame=%d samples/%d bytes", psz_text,
(char *)&p_format->i_format, p_format->i_rate,
aout_FormatPrintChannels( p_format ),
p_format->i_frame_length, p_format->i_bytes_per_frame );
}
/**
* Prints an audio sample format in a human-readable form.
*/
void aout_FormatPrint( vlc_object_t *obj, const char *psz_text,
const audio_sample_format_t *p_format )
{
msg_Dbg( obj, "%s '%4.4s' %d Hz %s frame=%u samples/%u bytes", psz_text,
(char *)&p_format->i_format, p_format->i_rate,
aout_FormatPrintChannels( p_format ),
p_format->i_frame_length, p_format->i_bytes_per_frame );
}
/*****************************************************************************
* OpenFilter:
*****************************************************************************/
static int OpenFilter( vlc_object_t *p_this )
{
filter_t *p_filter = (filter_t *)p_this;
filter_sys_t *p_sys;
audio_format_t *audio_in = &p_filter->fmt_in.audio;
audio_format_t *audio_out = &p_filter->fmt_out.audio;
if( ( audio_in->i_format != audio_out->i_format ) ||
( audio_in->i_rate != audio_out->i_rate ) )
return VLC_EGENERIC;
/* Allocate the memory needed to store the module's structure */
p_sys = p_filter->p_sys = malloc( sizeof(filter_sys_t) );
if( unlikely( p_sys == NULL ) )
return VLC_ENOMEM;
/* get number of and layout of input channels */
uint32_t i_output_physical = 0;
uint8_t pi_map_ch[ AOUT_CHAN_MAX ] = { 0 }; /* which out channel each in channel is mapped to */
p_sys->b_normalize = var_InheritBool( p_this, REMAP_CFG "normalize" );
for( uint8_t in_ch = 0, wg4_i = 0; in_ch < audio_in->i_channels; in_ch++, wg4_i++ )
{
/* explode in_channels in the right order */
while( ( audio_in->i_physical_channels & pi_vlc_chan_order_wg4[ wg4_i ] ) == 0 )
{
wg4_i++;
assert( wg4_i < sizeof( pi_vlc_chan_order_wg4 )/sizeof( pi_vlc_chan_order_wg4[0] ) );
}
unsigned channel_wg4idx_len = sizeof( channel_wg4idx )/sizeof( channel_wg4idx[0] );
uint8_t *pi_chnidx = memchr( channel_wg4idx, wg4_i, channel_wg4idx_len );
assert( pi_chnidx != NULL );
uint8_t chnidx = pi_chnidx - channel_wg4idx;
uint8_t out_idx = var_InheritInteger( p_this, channel_name[chnidx] );
pi_map_ch[in_ch] = channel_wg4idx[ out_idx ];
i_output_physical |= channel_flag[ out_idx ];
}
i_output_physical = CanonicaliseChannels( i_output_physical );
audio_out->i_physical_channels = i_output_physical;
aout_FormatPrepare( audio_out );
/* condense out_channels */
uint8_t out_ch_sorted[ AOUT_CHAN_MAX ];
for( uint8_t i = 0, wg4_i = 0; i < audio_out->i_channels; i++, wg4_i++ )
{
while( ( audio_out->i_physical_channels & pi_vlc_chan_order_wg4[ wg4_i ] ) == 0 )
{
wg4_i++;
assert( wg4_i < sizeof( pi_vlc_chan_order_wg4 )/sizeof( pi_vlc_chan_order_wg4[0] ) );
}
out_ch_sorted[ i ] = wg4_i;
}
bool b_multiple = false; /* whether we need to add channels (multiple in mapped to an out) */
memset( p_sys->nb_in_ch, 0, sizeof( p_sys->nb_in_ch ) );
for( uint8_t i = 0; i < audio_in->i_channels; i++ )
{
uint8_t wg4_out_ch = pi_map_ch[i];
uint8_t *pi_out_ch = memchr( out_ch_sorted, wg4_out_ch, audio_out->i_channels );
assert( pi_out_ch != NULL );
p_sys->map_ch[i] = pi_out_ch - out_ch_sorted;
if( ++p_sys->nb_in_ch[ p_sys->map_ch[i] ] > 1 )
b_multiple = true;
}
msg_Dbg( p_filter, "%s '%4.4s'->'%4.4s' %d Hz->%d Hz %s->%s",
"Remap filter",
(char *)&audio_in->i_format, (char *)&audio_out->i_format,
audio_in->i_rate, audio_out->i_rate,
aout_FormatPrintChannels( audio_in ),
aout_FormatPrintChannels( audio_out ) );
p_sys->pf_remap = GetRemapFun( audio_in, b_multiple );
if( !p_sys->pf_remap )
{
msg_Err( p_filter, "Could not decide on %s remap function", b_multiple ? "an add" : "a copy" );
free( p_sys );
return VLC_EGENERIC;
}
p_filter->pf_audio_filter = Remap;
return VLC_SUCCESS;
}
/*****************************************************************************
* Open: open the audio device (the digital sound processor)
*****************************************************************************
* This function opens the DSP as a usual non-blocking write-only file, and
* modifies the p_aout->p_sys->i_fd with the file's descriptor.
*****************************************************************************/
static int Open( vlc_object_t *p_this )
{
audio_output_t * p_aout = (audio_output_t *)p_this;
struct aout_sys_t * p_sys;
char * psz_device;
vlc_value_t val;
/* Allocate structure */
p_aout->sys = p_sys = malloc( sizeof( aout_sys_t ) );
if( p_sys == NULL )
return VLC_ENOMEM;
/* Get device name */
if( (psz_device = var_InheritString( p_aout, "oss-audio-device" )) == NULL )
{
msg_Err( p_aout, "no audio device specified (maybe /dev/dsp?)" );
free( p_sys );
return VLC_EGENERIC;
}
/* Open the sound device in non-blocking mode, because ALSA's OSS
* emulation and some broken OSS drivers would make a blocking call
* wait forever until the device is available. Since this breaks the
* OSS spec, we immediately put it back to blocking mode if the
* operation was successful. */
p_sys->i_fd = vlc_open( psz_device, O_WRONLY | O_NDELAY );
if( p_sys->i_fd < 0 )
{
msg_Err( p_aout, "cannot open audio device (%s)", psz_device );
free( psz_device );
free( p_sys );
return VLC_EGENERIC;
}
/* if the opening was ok, put the device back in blocking mode */
fcntl( p_sys->i_fd, F_SETFL,
fcntl( p_sys->i_fd, F_GETFL ) &~ FNDELAY );
free( psz_device );
p_aout->pf_play = aout_PacketPlay;
p_aout->pf_pause = aout_PacketPause;
p_aout->pf_flush = aout_PacketFlush;
if ( var_Type( p_aout, "audio-device" ) == 0 )
Probe( p_aout );
var_AddCallback( p_aout, "audio-device", aout_ChannelsRestart, NULL );
if ( var_Get( p_aout, "audio-device", &val ) < 0 )
/* Probe() has failed. */
goto error;
if ( val.i_int == AOUT_VAR_SPDIF )
{
p_aout->format.i_format = VLC_CODEC_SPDIFL;
}
else if ( val.i_int == AOUT_VAR_5_1 )
{
p_aout->format.i_format = VLC_CODEC_S16N;
p_aout->format.i_physical_channels
= AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
| AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT
| AOUT_CHAN_LFE;
}
else if ( val.i_int == AOUT_VAR_2F2R )
{
p_aout->format.i_format = VLC_CODEC_S16N;
p_aout->format.i_physical_channels
= AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT
| AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
}
else if ( val.i_int == AOUT_VAR_STEREO )
{
p_aout->format.i_format = VLC_CODEC_S16N;
p_aout->format.i_physical_channels
= AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
}
else if ( val.i_int == AOUT_VAR_MONO )
{
p_aout->format.i_format = VLC_CODEC_S16N;
p_aout->format.i_physical_channels = AOUT_CHAN_CENTER;
}
else
{
/* This should not happen ! */
msg_Err( p_aout, "internal: can't find audio-device (%"PRId64")",
val.i_int );
goto error;
}
var_TriggerCallback( p_aout, "intf-change" );
/* Reset the DSP device */
if( ioctl( p_sys->i_fd, SNDCTL_DSP_RESET, NULL ) < 0 )
{
msg_Err( p_aout, "cannot reset OSS audio device" );
goto error;
}
/* Set the output format */
if ( AOUT_FMT_SPDIF( &p_aout->format ) )
{
int i_format = AFMT_AC3;
if( ioctl( p_sys->i_fd, SNDCTL_DSP_SETFMT, &i_format ) < 0
|| i_format != AFMT_AC3 )
{
msg_Err( p_aout, "cannot reset OSS audio device" );
goto error;
}
p_aout->format.i_format = VLC_CODEC_SPDIFL;
p_aout->format.i_bytes_per_frame = AOUT_SPDIF_SIZE;
p_aout->format.i_frame_length = A52_FRAME_NB;
aout_PacketInit( p_aout, &p_sys->packet, A52_FRAME_NB );
aout_VolumeNoneInit( p_aout );
}
else
{
unsigned int i_format = AFMT_S16_NE;
unsigned int i_frame_size, i_fragments;
unsigned int i_rate;
unsigned int i_nb_channels;
audio_buf_info audio_buf;
if( ioctl( p_sys->i_fd, SNDCTL_DSP_SETFMT, &i_format ) < 0 )
{
msg_Err( p_aout, "cannot set audio output format" );
goto error;
}
switch ( i_format )
{
case AFMT_U8:
p_aout->format.i_format = VLC_CODEC_U8;
break;
case AFMT_S8:
p_aout->format.i_format = VLC_CODEC_S8;
break;
case AFMT_U16_LE:
p_aout->format.i_format = VLC_CODEC_U16L;
break;
case AFMT_S16_LE:
p_aout->format.i_format = VLC_CODEC_S16L;
break;
case AFMT_U16_BE:
p_aout->format.i_format = VLC_CODEC_U16B;
break;
case AFMT_S16_BE:
p_aout->format.i_format = VLC_CODEC_S16B;
break;
default:
msg_Err( p_aout, "OSS fell back to an unknown format (%d)",
i_format );
goto error;
}
i_nb_channels = aout_FormatNbChannels( &p_aout->format );
/* Set the number of channels */
if( ioctl( p_sys->i_fd, SNDCTL_DSP_CHANNELS, &i_nb_channels ) < 0 ||
i_nb_channels != aout_FormatNbChannels( &p_aout->format ) )
{
msg_Err( p_aout, "cannot set number of audio channels (%s)",
aout_FormatPrintChannels( &p_aout->format) );
goto error;
}
/* Set the output rate */
i_rate = p_aout->format.i_rate;
if( ioctl( p_sys->i_fd, SNDCTL_DSP_SPEED, &i_rate ) < 0 )
{
msg_Err( p_aout, "cannot set audio output rate (%i)",
p_aout->format.i_rate );
goto error;
}
if( i_rate != p_aout->format.i_rate )
{
p_aout->format.i_rate = i_rate;
}
/* Set the fragment size */
aout_FormatPrepare( &p_aout->format );
/* i_fragment = xxxxyyyy where: xxxx is fragtotal
* 1 << yyyy is fragsize */
i_frame_size = ((uint64_t)p_aout->format.i_bytes_per_frame * p_aout->format.i_rate * 65536) / (48000 * 2 * 2) / FRAME_COUNT;
i_fragments = 4;
while( i_fragments < 12 && (1U << i_fragments) < i_frame_size )
{
++i_fragments;
}
i_fragments |= FRAME_COUNT << 16;
if( ioctl( p_sys->i_fd, SNDCTL_DSP_SETFRAGMENT, &i_fragments ) < 0 )
{
msg_Warn( p_aout, "cannot set fragment size (%.8x)", i_fragments );
}
if( ioctl( p_sys->i_fd, SNDCTL_DSP_GETOSPACE, &audio_buf ) < 0 )
{
msg_Err( p_aout, "cannot get fragment size" );
goto error;
}
/* Number of fragments actually allocated */
p_aout->sys->i_fragstotal = audio_buf.fragstotal;
/* Maximum duration the soundcard's buffer can hold */
p_aout->sys->max_buffer_duration =
(mtime_t)audio_buf.fragstotal * audio_buf.fragsize * 1000000
/ p_aout->format.i_bytes_per_frame
/ p_aout->format.i_rate
* p_aout->format.i_frame_length;
aout_PacketInit( p_aout, &p_sys->packet,
audio_buf.fragsize/p_aout->format.i_bytes_per_frame );
aout_VolumeSoftInit( p_aout );
}
/* Create OSS thread and wait for its readiness. */
if( vlc_clone( &p_sys->thread, OSSThread, p_aout,
VLC_THREAD_PRIORITY_OUTPUT ) )
{
msg_Err( p_aout, "cannot create OSS thread (%m)" );
aout_PacketDestroy( p_aout );
goto error;
}
return VLC_SUCCESS;
error:
var_DelCallback( p_aout, "audio-device", aout_ChannelsRestart, NULL );
close( p_sys->i_fd );
free( p_sys );
return VLC_EGENERIC;
}
/*****************************************************************************
* Open: open the audio device (the digital sound processor)
*****************************************************************************
* This function opens the DSP as a usual non-blocking write-only file, and
* modifies the p_aout->p_sys->i_fd with the file's descriptor.
*****************************************************************************/
static int Open( vlc_object_t *p_this )
{
aout_instance_t * p_aout = (aout_instance_t *)p_this;
struct aout_sys_t * p_sys;
char * psz_device;
vlc_value_t val;
/* Allocate structure */
p_aout->output.p_sys = p_sys = malloc( sizeof( aout_sys_t ) );
if( p_sys == NULL )
{
msg_Err( p_aout, "out of memory" );
return VLC_ENOMEM;
}
/* Get device name */
if( (psz_device = config_GetPsz( p_aout, "dspdev" )) == NULL )
{
msg_Err( p_aout, "no audio device specified (maybe /dev/dsp?)" );
free( p_sys );
return VLC_EGENERIC;
}
/* Open the sound device in non-blocking mode, because ALSA's OSS
* emulation and some broken OSS drivers would make a blocking call
* wait forever until the device is available. Since this breaks the
* OSS spec, we immediately put it back to blocking mode if the
* operation was successful. */
p_sys->i_fd = open( psz_device, O_WRONLY | O_NDELAY );
if( p_sys->i_fd < 0 )
{
msg_Err( p_aout, "cannot open audio device (%s)", psz_device );
free( p_sys );
return VLC_EGENERIC;
}
/* if the opening was ok, put the device back in blocking mode */
fcntl( p_sys->i_fd, F_SETFL,
fcntl( p_sys->i_fd, F_GETFL ) &~ FNDELAY );
free( psz_device );
p_aout->output.pf_play = Play;
if ( var_Type( p_aout, "audio-device" ) == 0 )
{
Probe( p_aout );
}
if ( var_Get( p_aout, "audio-device", &val ) < 0 )
{
/* Probe() has failed. */
free( p_sys );
return VLC_EGENERIC;
}
if ( val.i_int == AOUT_VAR_SPDIF )
{
p_aout->output.output.i_format = VLC_FOURCC('s','p','d','i');
}
else if ( val.i_int == AOUT_VAR_5_1 )
{
p_aout->output.output.i_format = AOUT_FMT_S16_NE;
p_aout->output.output.i_physical_channels
= AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
| AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT
| AOUT_CHAN_LFE;
}
else if ( val.i_int == AOUT_VAR_2F2R )
{
p_aout->output.output.i_format = AOUT_FMT_S16_NE;
p_aout->output.output.i_physical_channels
= AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT
| AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
}
else if ( val.i_int == AOUT_VAR_STEREO )
{
p_aout->output.output.i_format = AOUT_FMT_S16_NE;
p_aout->output.output.i_physical_channels
= AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
}
else if ( val.i_int == AOUT_VAR_MONO )
{
p_aout->output.output.i_format = AOUT_FMT_S16_NE;
p_aout->output.output.i_physical_channels = AOUT_CHAN_CENTER;
}
else
{
/* This should not happen ! */
msg_Err( p_aout, "internal: can't find audio-device (%i)", val.i_int );
free( p_sys );
return VLC_EGENERIC;
}
val.b_bool = VLC_TRUE;
var_Set( p_aout, "intf-change", val );
/* Reset the DSP device */
if( ioctl( p_sys->i_fd, SNDCTL_DSP_RESET, NULL ) < 0 )
{
msg_Err( p_aout, "cannot reset OSS audio device" );
close( p_sys->i_fd );
free( p_sys );
return VLC_EGENERIC;
}
/* Set the output format */
if ( AOUT_FMT_NON_LINEAR( &p_aout->output.output ) )
{
int i_format = AFMT_AC3;
if( ioctl( p_sys->i_fd, SNDCTL_DSP_SETFMT, &i_format ) < 0
|| i_format != AFMT_AC3 )
{
msg_Err( p_aout, "cannot reset OSS audio device" );
close( p_sys->i_fd );
free( p_sys );
return VLC_EGENERIC;
}
p_aout->output.output.i_format = VLC_FOURCC('s','p','d','i');
p_aout->output.i_nb_samples = A52_FRAME_NB;
p_aout->output.output.i_bytes_per_frame = AOUT_SPDIF_SIZE;
p_aout->output.output.i_frame_length = A52_FRAME_NB;
aout_VolumeNoneInit( p_aout );
}
if ( !AOUT_FMT_NON_LINEAR( &p_aout->output.output ) )
{
unsigned int i_format = AFMT_S16_NE;
unsigned int i_frame_size, i_fragments;
unsigned int i_rate;
unsigned int i_nb_channels;
audio_buf_info audio_buf;
if( ioctl( p_sys->i_fd, SNDCTL_DSP_SETFMT, &i_format ) < 0 )
{
msg_Err( p_aout, "cannot set audio output format" );
close( p_sys->i_fd );
free( p_sys );
return VLC_EGENERIC;
}
switch ( i_format )
{
case AFMT_U8:
p_aout->output.output.i_format = VLC_FOURCC('u','8',' ',' ');
break;
case AFMT_S8:
p_aout->output.output.i_format = VLC_FOURCC('s','8',' ',' ');
break;
case AFMT_U16_LE:
p_aout->output.output.i_format = VLC_FOURCC('u','1','6','l');
break;
case AFMT_S16_LE:
p_aout->output.output.i_format = VLC_FOURCC('s','1','6','l');
break;
case AFMT_U16_BE:
p_aout->output.output.i_format = VLC_FOURCC('u','1','6','b');
break;
case AFMT_S16_BE:
p_aout->output.output.i_format = VLC_FOURCC('s','1','6','b');
break;
default:
msg_Err( p_aout, "OSS fell back to an unknown format (%d)",
i_format );
close( p_sys->i_fd );
free( p_sys );
return VLC_EGENERIC;
}
i_nb_channels = aout_FormatNbChannels( &p_aout->output.output );
/* Set the number of channels */
if( ioctl( p_sys->i_fd, SNDCTL_DSP_CHANNELS, &i_nb_channels ) < 0 ||
i_nb_channels != aout_FormatNbChannels( &p_aout->output.output ) )
{
msg_Err( p_aout, "cannot set number of audio channels (%s)",
aout_FormatPrintChannels( &p_aout->output.output) );
close( p_sys->i_fd );
free( p_sys );
return VLC_EGENERIC;
}
/* Set the output rate */
i_rate = p_aout->output.output.i_rate;
if( ioctl( p_sys->i_fd, SNDCTL_DSP_SPEED, &i_rate ) < 0 )
{
msg_Err( p_aout, "cannot set audio output rate (%i)",
p_aout->output.output.i_rate );
close( p_sys->i_fd );
free( p_sys );
return VLC_EGENERIC;
}
if( i_rate != p_aout->output.output.i_rate )
{
p_aout->output.output.i_rate = i_rate;
}
/* Set the fragment size */
aout_FormatPrepare( &p_aout->output.output );
/* i_fragment = xxxxyyyy where: xxxx is fragtotal
* 1 << yyyy is fragsize */
i_fragments = 0;
i_frame_size = FRAME_SIZE * p_aout->output.output.i_bytes_per_frame;
while( i_frame_size >>= 1 )
{
++i_fragments;
}
i_fragments |= FRAME_COUNT << 16;
if( ioctl( p_sys->i_fd, SNDCTL_DSP_SETFRAGMENT, &i_fragments ) < 0 )
{
msg_Warn( p_aout, "cannot set fragment size (%.8x)", i_fragments );
}
if( ioctl( p_sys->i_fd, SNDCTL_DSP_GETOSPACE, &audio_buf ) < 0 )
{
msg_Err( p_aout, "cannot get fragment size" );
close( p_sys->i_fd );
free( p_sys );
return VLC_EGENERIC;
}
else
{
/* Number of fragments actually allocated */
p_aout->output.p_sys->i_fragstotal = audio_buf.fragstotal;
/* Maximum duration the soundcard's buffer can hold */
p_aout->output.p_sys->max_buffer_duration =
(mtime_t)audio_buf.fragstotal * audio_buf.fragsize * 1000000
/ p_aout->output.output.i_bytes_per_frame
/ p_aout->output.output.i_rate
* p_aout->output.output.i_frame_length;
p_aout->output.i_nb_samples = audio_buf.fragsize /
p_aout->output.output.i_bytes_per_frame;
}
aout_VolumeSoftInit( p_aout );
}
