/*****************************************************************************
* wav.c : wav file input module for vlc
*****************************************************************************
- * Copyright (C) 2001-2003 VideoLAN
- * $Id: wav.c,v 1.15 2004/03/03 11:40:19 fenrir Exp $
+ * Copyright (C) 2001-2008 the VideoLAN team
+ * $Id$
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
*
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
-#include <stdlib.h> /* malloc(), free() */
-#include <vlc/vlc.h>
-#include <vlc/input.h>
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
-#include <codecs.h>
+#include <vlc_common.h>
+#include <vlc_plugin.h>
+#include <vlc_demux.h>
+#include <vlc_aout.h>
+#include <vlc_codecs.h>
/*****************************************************************************
* Module descriptor
static int Open ( vlc_object_t * );
static void Close( vlc_object_t * );
-vlc_module_begin();
- set_description( _("WAV demuxer") );
- set_capability( "demux2", 142 );
- set_callbacks( Open, Close );
-vlc_module_end();
+vlc_module_begin ()
+ set_description( N_("WAV demuxer") )
+ set_category( CAT_INPUT )
+ set_subcategory( SUBCAT_INPUT_DEMUX )
+ set_capability( "demux", 142 )
+ set_callbacks( Open, Close )
+vlc_module_end ()
/*****************************************************************************
* Local prototypes
int64_t i_data_pos;
unsigned int i_data_size;
- mtime_t i_time;
unsigned int i_frame_size;
- mtime_t i_frame_length;
+ int i_frame_samples;
+
+ date_t pts;
+
+ uint32_t i_channel_mask;
+ bool b_chan_reorder; /* do we need channel reordering */
+ int pi_chan_table[AOUT_CHAN_MAX];
};
-#define __EVEN( x ) ( ( (x)%2 != 0 ) ? ((x)+1) : (x) )
+static int ChunkFind( demux_t *, const char *, unsigned int * );
-static int ChunkFind( demux_t *, char *, unsigned int * );
+static int FrameInfo_IMA_ADPCM( unsigned int *, int *, const es_format_t * );
+static int FrameInfo_MS_ADPCM ( unsigned int *, int *, const es_format_t * );
+static int FrameInfo_PCM ( unsigned int *, int *, const es_format_t * );
+static int FrameInfo_MSGSM ( unsigned int *, int *, const es_format_t * );
-static void FrameInfo_IMA_ADPCM( demux_t *, unsigned int *, mtime_t * );
-static void FrameInfo_MS_ADPCM ( demux_t *, unsigned int *, mtime_t * );
-static void FrameInfo_PCM ( demux_t *, unsigned int *, mtime_t * );
+static const uint32_t pi_channels_src[] =
+ { WAVE_SPEAKER_FRONT_LEFT, WAVE_SPEAKER_FRONT_RIGHT,
+ WAVE_SPEAKER_FRONT_CENTER, WAVE_SPEAKER_LOW_FREQUENCY,
+ WAVE_SPEAKER_BACK_LEFT, WAVE_SPEAKER_BACK_RIGHT, WAVE_SPEAKER_BACK_CENTER,
+ WAVE_SPEAKER_SIDE_LEFT, WAVE_SPEAKER_SIDE_RIGHT, 0 };
+static const uint32_t pi_channels_in[] =
+ { AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT,
+ AOUT_CHAN_CENTER, AOUT_CHAN_LFE,
+ AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT, AOUT_CHAN_REARCENTER,
+ AOUT_CHAN_MIDDLELEFT, AOUT_CHAN_MIDDLERIGHT, 0 };
/*****************************************************************************
* Open: check file and initializes structures
demux_t *p_demux = (demux_t*)p_this;
demux_sys_t *p_sys;
- uint8_t *p_peek;
- unsigned int i_size, i_extended;
- char *psz_name;
+ const uint8_t *p_peek;
+ unsigned int i_size;
+ unsigned int i_extended;
+ const char *psz_name;
- WAVEFORMATEXTENSIBLE *p_wf_ext;
- WAVEFORMATEX *p_wf;
+ WAVEFORMATEXTENSIBLE *p_wf_ext = NULL;
+ WAVEFORMATEX *p_wf = NULL;
/* Is it a wav file ? */
if( stream_Peek( p_demux->s, &p_peek, 12 ) < 12 )
- {
- msg_Warn( p_demux, "WAV module discarded (cannot peek)" );
return VLC_EGENERIC;
- }
- if( strncmp( p_peek, "RIFF", 4 ) || strncmp( &p_peek[8], "WAVE", 4 ) )
+
+ if( memcmp( p_peek, "RIFF", 4 ) || memcmp( &p_peek[8], "WAVE", 4 ) )
{
return VLC_EGENERIC;
}
p_demux->pf_demux = Demux;
p_demux->pf_control = Control;
- p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
+ p_demux->p_sys = p_sys = malloc( sizeof( *p_sys ) );
+ if( p_sys == NULL )
+ return VLC_ENOMEM;
+
p_sys->p_es = NULL;
- p_sys->i_time = 0;
+ p_sys->b_chan_reorder = false;
+ p_sys->i_channel_mask = 0;
/* skip riff header */
- stream_Read( p_demux->s, NULL, 12 ); /* cannot fail as peek succeed */
+ if( stream_Read( p_demux->s, NULL, 12 ) != 12 )
+ goto error;
/* search fmt chunk */
if( ChunkFind( p_demux, "fmt ", &i_size ) )
msg_Err( p_demux, "cannot find 'fmt ' chunk" );
goto error;
}
- if( i_size < sizeof( WAVEFORMATEX ) - 2 ) /* XXX -2 isn't a typo */
+ i_size += 2;
+ if( i_size < sizeof( WAVEFORMATEX ) )
{
msg_Err( p_demux, "invalid 'fmt ' chunk" );
goto error;
}
- stream_Read( p_demux->s, NULL, 8 ); /* Cannot fail */
+ if( stream_Read( p_demux->s, NULL, 8 ) != 8 )
+ goto error;
+
/* load waveformatex */
- p_wf = (WAVEFORMATEX *)p_wf_ext = malloc( __EVEN( i_size ) + 2 );
+ p_wf_ext = malloc( i_size );
+ if( p_wf_ext == NULL )
+ goto error;
+
+ p_wf = &p_wf_ext->Format;
p_wf->cbSize = 0;
- if( stream_Read( p_demux->s,
- p_wf, __EVEN( i_size ) ) < (int)__EVEN( i_size ) )
+ i_size -= 2;
+ if( stream_Read( p_demux->s, p_wf, i_size ) != (int)i_size ||
+ ( ( i_size & 1 ) && stream_Read( p_demux->s, NULL, 1 ) != 1 ) )
{
msg_Err( p_demux, "cannot load 'fmt ' chunk" );
goto error;
p_sys->fmt.audio.i_blockalign = GetWLE( &p_wf->nBlockAlign );
p_sys->fmt.i_bitrate = GetDWLE( &p_wf->nAvgBytesPerSec ) * 8;
p_sys->fmt.audio.i_bitspersample = GetWLE( &p_wf->wBitsPerSample );
- p_sys->fmt.i_extra = GetWLE( &p_wf->cbSize );
+ if( i_size >= sizeof(WAVEFORMATEX) )
+ p_sys->fmt.i_extra = __MIN( GetWLE( &p_wf->cbSize ), i_size - sizeof(WAVEFORMATEX) );
i_extended = 0;
/* Handle new WAVE_FORMAT_EXTENSIBLE wav files */
+ /* see the following link for more information:
+ * http://www.microsoft.com/whdc/device/audio/multichaud.mspx#EFAA */
if( GetWLE( &p_wf->wFormatTag ) == WAVE_FORMAT_EXTENSIBLE &&
- i_size >= sizeof( WAVEFORMATEXTENSIBLE ) )
+ i_size >= sizeof( WAVEFORMATEXTENSIBLE ) &&
+ ( p_sys->fmt.i_extra + sizeof( WAVEFORMATEX )
+ >= sizeof( WAVEFORMATEXTENSIBLE ) ) )
{
- wf_tag_to_fourcc( GetWLE( &p_wf_ext->SubFormat ),
- &p_sys->fmt.i_codec, &psz_name );
+ unsigned i, i_channel_mask;
+ GUID guid_subformat;
+
+ guid_subformat = p_wf_ext->SubFormat;
+ guid_subformat.Data1 = GetDWLE( &p_wf_ext->SubFormat.Data1 );
+ guid_subformat.Data2 = GetWLE( &p_wf_ext->SubFormat.Data2 );
+ guid_subformat.Data3 = GetWLE( &p_wf_ext->SubFormat.Data3 );
+
+ sf_tag_to_fourcc( &guid_subformat, &p_sys->fmt.i_codec, &psz_name );
+
i_extended = sizeof( WAVEFORMATEXTENSIBLE ) - sizeof( WAVEFORMATEX );
p_sys->fmt.i_extra -= i_extended;
+
+ i_channel_mask = GetDWLE( &p_wf_ext->dwChannelMask );
+ if( i_channel_mask )
+ {
+ int i_match = 0;
+ for( i = 0; i < sizeof(pi_channels_src)/sizeof(*pi_channels_src); i++ )
+ {
+ if( i_channel_mask & pi_channels_src[i] )
+ {
+ if( !( p_sys->i_channel_mask & pi_channels_in[i] ) )
+ i_match++;
+
+ i_channel_mask &= ~pi_channels_src[i];
+ p_sys->i_channel_mask |= pi_channels_in[i];
+
+ if( i_match >= p_sys->fmt.audio.i_channels )
+ break;
+ }
+ }
+ if( i_channel_mask )
+ msg_Warn( p_demux, "Some channels are unrecognized or uselessly specified (0x%x)", i_channel_mask );
+ if( i_match < p_sys->fmt.audio.i_channels )
+ {
+ int i_missing = p_sys->fmt.audio.i_channels - i_match;
+ msg_Warn( p_demux, "Trying to fill up unspecified position for %d channels", p_sys->fmt.audio.i_channels - i_match );
+
+ static const uint32_t pi_pair[] = { AOUT_CHAN_REARLEFT|AOUT_CHAN_REARRIGHT,
+ AOUT_CHAN_MIDDLELEFT|AOUT_CHAN_MIDDLERIGHT,
+ AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT };
+ /* FIXME: Unused yet
+ static const uint32_t pi_center[] = { AOUT_CHAN_REARCENTER,
+ 0,
+ AOUT_CHAN_CENTER }; */
+
+ /* Try to complete with pair */
+ for( unsigned i = 0; i < sizeof(pi_pair)/sizeof(*pi_pair); i++ )
+ {
+ if( i_missing >= 2 && !(p_sys->i_channel_mask & pi_pair[i] ) )
+ {
+ i_missing -= 2;
+ p_sys->i_channel_mask |= pi_pair[i];
+ }
+ }
+ /* Well fill up with what we can */
+ for( unsigned i = 0; i < sizeof(pi_channels_in)/sizeof(*pi_channels_in) && i_missing > 0; i++ )
+ {
+ if( !( p_sys->i_channel_mask & pi_channels_in[i] ) )
+ {
+ p_sys->i_channel_mask |= pi_channels_in[i];
+ i_missing--;
+
+ if( i_missing <= 0 )
+ break;
+ }
+ }
+
+ i_match = p_sys->fmt.audio.i_channels - i_missing;
+ }
+ if( i_match < p_sys->fmt.audio.i_channels )
+ {
+ msg_Err( p_demux, "Invalid/unsupported channel mask" );
+ p_sys->i_channel_mask = 0;
+ }
+ }
+ }
+ else if( GetWLE( &p_wf->wFormatTag ) == WAVE_FORMAT_PCM &&
+ p_sys->fmt.audio.i_channels > 2 && p_sys->fmt.audio.i_channels <= 9 )
+ {
+ for( int i = 0; i < p_sys->fmt.audio.i_channels; i++ )
+ p_sys->i_channel_mask |= pi_channels_in[i];
+ }
+
+ if( p_sys->i_channel_mask )
+ {
+ if( p_sys->fmt.i_codec == VLC_FOURCC('a','r','a','w') ||
+ p_sys->fmt.i_codec == VLC_FOURCC('p','c','m',' ') ||
+ p_sys->fmt.i_codec == VLC_FOURCC('a','f','l','t') )
+ p_sys->b_chan_reorder =
+ aout_CheckChannelReorder( pi_channels_in, NULL,
+ p_sys->i_channel_mask,
+ p_sys->fmt.audio.i_channels,
+ p_sys->pi_chan_table );
+
+ msg_Dbg( p_demux, "channel mask: %x, reordering: %i",
+ p_sys->i_channel_mask, (int)p_sys->b_chan_reorder );
}
+ p_sys->fmt.audio.i_physical_channels =
+ p_sys->fmt.audio.i_original_channels = p_sys->i_channel_mask;
+
if( p_sys->fmt.i_extra > 0 )
{
p_sys->fmt.p_extra = malloc( p_sys->fmt.i_extra );
+ if( !p_sys->fmt.p_extra )
+ {
+ p_sys->fmt.i_extra = 0;
+ goto error;
+ }
memcpy( p_sys->fmt.p_extra, ((uint8_t *)p_wf) + i_extended,
p_sys->fmt.i_extra );
}
msg_Dbg( p_demux, "format: 0x%4.4x, fourcc: %4.4s, channels: %d, "
- "freq: %d Hz, bitrate: %dKo/s, blockalign: %d, bits/samples: %d, "
+ "freq: %u Hz, bitrate: %uKo/s, blockalign: %d, bits/samples: %d, "
"extra size: %d",
GetWLE( &p_wf->wFormatTag ), (char *)&p_sys->fmt.i_codec,
p_sys->fmt.audio.i_channels, p_sys->fmt.audio.i_rate,
p_sys->fmt.audio.i_bitspersample, p_sys->fmt.i_extra );
free( p_wf );
+ p_wf = NULL;
switch( p_sys->fmt.i_codec )
{
case VLC_FOURCC( 'a', 'r', 'a', 'w' ):
case VLC_FOURCC( 'a', 'f', 'l', 't' ):
case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
- case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
- FrameInfo_PCM( p_demux, &p_sys->i_frame_size, &p_sys->i_frame_length );
+ case VLC_CODEC_ALAW:
+ case VLC_CODEC_MULAW:
+ case VLC_FOURCC( 'p', 'c', 'm', ' ' ):
+ if( FrameInfo_PCM( &p_sys->i_frame_size, &p_sys->i_frame_samples,
+ &p_sys->fmt ) )
+ goto error;
break;
- case VLC_FOURCC( 'm', 's', 0x00, 0x02 ):
- FrameInfo_MS_ADPCM( p_demux, &p_sys->i_frame_size,
- &p_sys->i_frame_length );
+ case VLC_CODEC_ADPCM_MS:
+ if( FrameInfo_MS_ADPCM( &p_sys->i_frame_size, &p_sys->i_frame_samples,
+ &p_sys->fmt ) )
+ goto error;
break;
- case VLC_FOURCC( 'm', 's', 0x00, 0x11 ):
- FrameInfo_IMA_ADPCM( p_demux, &p_sys->i_frame_size,
- &p_sys->i_frame_length );
+ case VLC_CODEC_ADPCM_IMA_WAV:
+ if( FrameInfo_IMA_ADPCM( &p_sys->i_frame_size, &p_sys->i_frame_samples,
+ &p_sys->fmt ) )
+ goto error;
break;
case VLC_FOURCC( 'm', 's', 0x00, 0x61 ):
case VLC_FOURCC( 'm', 's', 0x00, 0x62 ):
/* FIXME not sure at all FIXME */
- FrameInfo_MS_ADPCM( p_demux, &p_sys->i_frame_size,
- &p_sys->i_frame_length );
+ if( FrameInfo_MS_ADPCM( &p_sys->i_frame_size, &p_sys->i_frame_samples,
+ &p_sys->fmt ) )
+ goto error;
break;
- case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
- case VLC_FOURCC( 'a', '5', '2', ' ' ):
+ case VLC_CODEC_MPGA:
+ case VLC_CODEC_A52:
/* FIXME set end of area FIXME */
- goto relay;
+ goto error;
+ case VLC_CODEC_GSM_MS:
+ case VLC_CODEC_ADPCM_G726:
+ if( FrameInfo_MSGSM( &p_sys->i_frame_size, &p_sys->i_frame_samples,
+ &p_sys->fmt ) )
+ goto error;
+ break;
default:
msg_Err( p_demux, "unsupported codec (%4.4s)",
(char*)&p_sys->fmt.i_codec );
goto error;
}
+ if( p_sys->i_frame_size <= 0 || p_sys->i_frame_samples <= 0 )
+ {
+ msg_Dbg( p_demux, "invalid frame size: %i %i", p_sys->i_frame_size,
+ p_sys->i_frame_samples );
+ goto error;
+ }
+ if( p_sys->fmt.audio.i_rate <= 0 )
+ {
+ msg_Dbg( p_demux, "invalid sample rate: %i", p_sys->fmt.audio.i_rate );
+ goto error;
+ }
+
msg_Dbg( p_demux, "found %s audio format", psz_name );
if( ChunkFind( p_demux, "data", &p_sys->i_data_size ) )
msg_Err( p_demux, "cannot find 'data' chunk" );
goto error;
}
- stream_Read( p_demux->s, NULL, 8 ); /* Cannot fail */
+ if( stream_Read( p_demux->s, NULL, 8 ) != 8 )
+ goto error;
p_sys->i_data_pos = stream_Tell( p_demux->s );
if( p_sys->fmt.i_bitrate <= 0 )
{
- p_sys->fmt.i_bitrate = (mtime_t)p_sys->i_frame_size *
- I64C(8000000) / p_sys->i_frame_length;
+ p_sys->fmt.i_bitrate = (int64_t)p_sys->i_frame_size *
+ p_sys->fmt.audio.i_rate * 8 / p_sys->i_frame_samples;
}
p_sys->p_es = es_out_Add( p_demux->out, &p_sys->fmt );
+
+ date_Init( &p_sys->pts, p_sys->fmt.audio.i_rate, 1 );
+ date_Set( &p_sys->pts, 1 );
+
return VLC_SUCCESS;
error:
-relay:
+ msg_Err( p_demux, "An error occured during wav demuxing" );
+ free( p_wf );
free( p_sys );
return VLC_EGENERIC;
}
static int Demux( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
- int64_t i_pos;
block_t *p_block;
-
- i_pos = stream_Tell( p_demux->s );
+ const int64_t i_pos = stream_Tell( p_demux->s );
if( p_sys->i_data_size > 0 &&
i_pos >= p_sys->i_data_pos + p_sys->i_data_size )
msg_Warn( p_demux, "cannot read data" );
return 0;
}
- p_block->i_dts = p_block->i_pts = p_sys->i_time;
+
+ p_block->i_dts =
+ p_block->i_pts = VLC_TS_0 + date_Get( &p_sys->pts );
/* set PCR */
- es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time );
+ es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_block->i_pts );
+
+ /* Do the channel reordering */
+ if( p_sys->b_chan_reorder )
+ aout_ChannelReorder( p_block->p_buffer, p_block->i_buffer,
+ p_sys->fmt.audio.i_channels,
+ p_sys->pi_chan_table,
+ p_sys->fmt.audio.i_bitspersample );
es_out_Send( p_demux->out, p_sys->p_es, p_block );
- p_sys->i_time += p_sys->i_frame_length;
+ date_Increment( &p_sys->pts, p_sys->i_frame_samples );
return 1;
}
{
demux_sys_t *p_sys = p_demux->p_sys;
int64_t i_end = -1;
+
if( p_sys->i_data_size > 0 )
- {
i_end = p_sys->i_data_pos + p_sys->i_data_size;
- }
- return demux2_vaControlHelper( p_demux->s,
- p_sys->i_data_pos, i_end,
- p_sys->fmt.i_bitrate, p_sys->fmt.audio.i_blockalign,
+
+ return demux_vaControlHelper( p_demux->s, p_sys->i_data_pos, i_end,
+ p_sys->fmt.i_bitrate,
+ p_sys->fmt.audio.i_blockalign,
i_query, args );
}
/*****************************************************************************
* Local functions
*****************************************************************************/
-static int ChunkFind( demux_t *p_demux,
- char *fcc, unsigned int *pi_size )
+static int ChunkFind( demux_t *p_demux, const char *fcc, unsigned int *pi_size )
{
- uint8_t *p_peek;
+ const uint8_t *p_peek;
for( ;; )
{
- int i_size;
+ uint32_t i_size;
if( stream_Peek( p_demux->s, &p_peek, 8 ) < 8 )
{
- msg_Err( p_demux, "cannot peek()" );
+ msg_Err( p_demux, "cannot peek" );
return VLC_EGENERIC;
}
i_size = GetDWLE( p_peek + 4 );
- msg_Dbg( p_demux, "Chunk: fcc=`%4.4s` size=%d", p_peek, i_size );
+ msg_Dbg( p_demux, "chunk: fcc=`%4.4s` size=%"PRIu32, p_peek, i_size );
- if( !strncmp( p_peek, fcc, 4 ) )
+ if( !memcmp( p_peek, fcc, 4 ) )
{
if( pi_size )
{
return VLC_SUCCESS;
}
- i_size = __EVEN( i_size ) + 8;
- if( stream_Read( p_demux->s, NULL, i_size ) != i_size )
- {
+ /* Skip chunk */
+ if( stream_Read( p_demux->s, NULL, 8 ) != 8 ||
+ stream_Read( p_demux->s, NULL, i_size ) != (int)i_size ||
+ ( (i_size & 1) && stream_Read( p_demux->s, NULL, 1 ) != 1 ) )
return VLC_EGENERIC;
- }
}
}
-static void FrameInfo_PCM( demux_t *p_demux,
- unsigned int *pi_size,
- mtime_t *pi_length )
+static int FrameInfo_PCM( unsigned int *pi_size, int *pi_samples,
+ const es_format_t *p_fmt )
{
- demux_sys_t *p_sys = p_demux->p_sys;
-
- int i_samples;
-
int i_bytes;
- int i_modulo;
/* read samples for 50ms of */
- i_samples = __MAX( p_sys->fmt.audio.i_rate / 20, 1 );
+ *pi_samples = __MAX( p_fmt->audio.i_rate / 20, 1 );
+ i_bytes = *pi_samples * p_fmt->audio.i_channels *
+ ( (p_fmt->audio.i_bitspersample + 7) / 8 );
- *pi_length = (mtime_t)1000000 *
- (mtime_t)i_samples /
- (mtime_t)p_sys->fmt.audio.i_rate;
-
- i_bytes = i_samples * p_sys->fmt.audio.i_channels *
- ( (p_sys->fmt.audio.i_bitspersample + 7) / 8 );
-
- if( p_sys->fmt.audio.i_blockalign > 0 )
+ if( p_fmt->audio.i_blockalign > 0 )
{
- if( ( i_modulo = i_bytes % p_sys->fmt.audio.i_blockalign ) != 0 )
- {
- i_bytes += p_sys->fmt.audio.i_blockalign - i_modulo;
- }
+ const int i_modulo = i_bytes % p_fmt->audio.i_blockalign;
+ if( i_modulo > 0 )
+ i_bytes += p_fmt->audio.i_blockalign - i_modulo;
}
*pi_size = i_bytes;
+ return VLC_SUCCESS;
}
-static void FrameInfo_MS_ADPCM( demux_t *p_demux,
- unsigned int *pi_size,
- mtime_t *pi_length )
+static int FrameInfo_MS_ADPCM( unsigned int *pi_size, int *pi_samples,
+ const es_format_t *p_fmt )
{
- demux_sys_t *p_sys = p_demux->p_sys;
-
- int i_samples;
-
- i_samples = 2 + 2 * ( p_sys->fmt.audio.i_blockalign -
- 7 * p_sys->fmt.audio.i_channels ) / p_sys->fmt.audio.i_channels;
+ if( p_fmt->audio.i_channels <= 0 )
+ return VLC_EGENERIC;
- *pi_length = (mtime_t)1000000 * (mtime_t)i_samples /
- (mtime_t)p_sys->fmt.audio.i_rate;
+ *pi_samples = 2 + 2 * ( p_fmt->audio.i_blockalign -
+ 7 * p_fmt->audio.i_channels ) / p_fmt->audio.i_channels;
+ *pi_size = p_fmt->audio.i_blockalign;
- *pi_size = p_sys->fmt.audio.i_blockalign;
+ return VLC_SUCCESS;
}
-static void FrameInfo_IMA_ADPCM( demux_t *p_demux,
- unsigned int *pi_size,
- mtime_t *pi_length )
+static int FrameInfo_IMA_ADPCM( unsigned int *pi_size, int *pi_samples,
+ const es_format_t *p_fmt )
{
- demux_sys_t *p_sys = p_demux->p_sys;
+ if( p_fmt->audio.i_channels <= 0 )
+ return VLC_EGENERIC;
- int i_samples;
+ *pi_samples = 2 * ( p_fmt->audio.i_blockalign -
+ 4 * p_fmt->audio.i_channels ) / p_fmt->audio.i_channels;
+ *pi_size = p_fmt->audio.i_blockalign;
- i_samples = 2 * ( p_sys->fmt.audio.i_blockalign -
- 4 * p_sys->fmt.audio.i_channels ) / p_sys->fmt.audio.i_channels;
+ return VLC_SUCCESS;
+}
- *pi_length = (mtime_t)1000000 * (mtime_t)i_samples /
- (mtime_t)p_sys->fmt.audio.i_rate;
+static int FrameInfo_MSGSM( unsigned int *pi_size, int *pi_samples,
+ const es_format_t *p_fmt )
+{
+ if( p_fmt->i_bitrate <= 0 )
+ return VLC_EGENERIC;
- *pi_size = p_sys->fmt.audio.i_blockalign;
-}
+ *pi_samples = ( p_fmt->audio.i_blockalign * p_fmt->audio.i_rate * 8)
+ / p_fmt->i_bitrate;
+ *pi_size = p_fmt->audio.i_blockalign;
+ return VLC_SUCCESS;
+}
projects / vlc / blobdiff