1 /*****************************************************************************
2 * wav.c : wav file input module for vlc
3 *****************************************************************************
4 * Copyright (C) 2001-2008 the VideoLAN team
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
32 #include <vlc_common.h>
33 #include <vlc_plugin.h>
34 #include <vlc_demux.h>
36 #include <vlc_codecs.h>
38 /*****************************************************************************
40 *****************************************************************************/
41 static int Open ( vlc_object_t * );
42 static void Close( vlc_object_t * );
45 set_description( N_("WAV demuxer") )
46 set_category( CAT_INPUT )
47 set_subcategory( SUBCAT_INPUT_DEMUX )
48 set_capability( "demux", 142 )
49 set_callbacks( Open, Close )
52 /*****************************************************************************
54 *****************************************************************************/
55 static int Demux ( demux_t * );
56 static int Control( demux_t *, int i_query, va_list args );
64 unsigned int i_data_size;
66 unsigned int i_frame_size;
71 uint32_t i_channel_mask;
72 bool b_chan_reorder; /* do we need channel reordering */
73 int pi_chan_table[AOUT_CHAN_MAX];
76 static int ChunkFind( demux_t *, const char *, unsigned int * );
78 static int FrameInfo_IMA_ADPCM( unsigned int *, int *, const es_format_t * );
79 static int FrameInfo_MS_ADPCM ( unsigned int *, int *, const es_format_t * );
80 static int FrameInfo_PCM ( unsigned int *, int *, const es_format_t * );
81 static int FrameInfo_MSGSM ( unsigned int *, int *, const es_format_t * );
83 static const uint32_t pi_channels_src[] =
84 { WAVE_SPEAKER_FRONT_LEFT, WAVE_SPEAKER_FRONT_RIGHT,
85 WAVE_SPEAKER_FRONT_CENTER, WAVE_SPEAKER_LOW_FREQUENCY,
86 WAVE_SPEAKER_BACK_LEFT, WAVE_SPEAKER_BACK_RIGHT, WAVE_SPEAKER_BACK_CENTER,
87 WAVE_SPEAKER_SIDE_LEFT, WAVE_SPEAKER_SIDE_RIGHT, 0 };
88 static const uint32_t pi_channels_in[] =
89 { AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT,
90 AOUT_CHAN_CENTER, AOUT_CHAN_LFE,
91 AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT, AOUT_CHAN_REARCENTER,
92 AOUT_CHAN_MIDDLELEFT, AOUT_CHAN_MIDDLERIGHT, 0 };
94 /*****************************************************************************
95 * Open: check file and initializes structures
96 *****************************************************************************/
97 static int Open( vlc_object_t * p_this )
99 demux_t *p_demux = (demux_t*)p_this;
102 const uint8_t *p_peek;
104 unsigned int i_extended;
105 const char *psz_name;
107 WAVEFORMATEXTENSIBLE *p_wf_ext = NULL;
108 WAVEFORMATEX *p_wf = NULL;
110 /* Is it a wav file ? */
111 if( stream_Peek( p_demux->s, &p_peek, 12 ) < 12 )
114 if( memcmp( p_peek, "RIFF", 4 ) || memcmp( &p_peek[8], "WAVE", 4 ) )
119 p_demux->pf_demux = Demux;
120 p_demux->pf_control = Control;
121 p_demux->p_sys = p_sys = malloc( sizeof( *p_sys ) );
126 p_sys->b_chan_reorder = false;
127 p_sys->i_channel_mask = 0;
129 /* skip riff header */
130 if( stream_Read( p_demux->s, NULL, 12 ) != 12 )
133 /* search fmt chunk */
134 if( ChunkFind( p_demux, "fmt ", &i_size ) )
136 msg_Err( p_demux, "cannot find 'fmt ' chunk" );
140 if( i_size < sizeof( WAVEFORMATEX ) )
142 msg_Err( p_demux, "invalid 'fmt ' chunk" );
145 if( stream_Read( p_demux->s, NULL, 8 ) != 8 )
149 /* load waveformatex */
150 p_wf_ext = malloc( i_size );
151 if( p_wf_ext == NULL )
154 p_wf = (WAVEFORMATEX *)p_wf_ext;
157 if( stream_Read( p_demux->s, p_wf, i_size ) != (int)i_size ||
158 ( ( i_size & 1 ) && stream_Read( p_demux->s, NULL, 1 ) != 1 ) )
160 msg_Err( p_demux, "cannot load 'fmt ' chunk" );
164 es_format_Init( &p_sys->fmt, AUDIO_ES, 0 );
165 wf_tag_to_fourcc( GetWLE( &p_wf->wFormatTag ), &p_sys->fmt.i_codec,
167 p_sys->fmt.audio.i_channels = GetWLE ( &p_wf->nChannels );
168 p_sys->fmt.audio.i_rate = GetDWLE( &p_wf->nSamplesPerSec );
169 p_sys->fmt.audio.i_blockalign = GetWLE( &p_wf->nBlockAlign );
170 p_sys->fmt.i_bitrate = GetDWLE( &p_wf->nAvgBytesPerSec ) * 8;
171 p_sys->fmt.audio.i_bitspersample = GetWLE( &p_wf->wBitsPerSample );
172 if( i_size >= sizeof(WAVEFORMATEX) )
173 p_sys->fmt.i_extra = __MIN( GetWLE( &p_wf->cbSize ), i_size - sizeof(WAVEFORMATEX) );
176 /* Handle new WAVE_FORMAT_EXTENSIBLE wav files */
177 /* see the following link for more information:
178 * http://www.microsoft.com/whdc/device/audio/multichaud.mspx#EFAA */
179 if( GetWLE( &p_wf->wFormatTag ) == WAVE_FORMAT_EXTENSIBLE &&
180 i_size >= sizeof( WAVEFORMATEXTENSIBLE ) &&
181 ( p_sys->fmt.i_extra + sizeof( WAVEFORMATEX )
182 >= sizeof( WAVEFORMATEXTENSIBLE ) ) )
184 unsigned i, i_channel_mask;
187 guid_subformat = p_wf_ext->SubFormat;
188 guid_subformat.Data1 = GetDWLE( &p_wf_ext->SubFormat.Data1 );
189 guid_subformat.Data2 = GetWLE( &p_wf_ext->SubFormat.Data2 );
190 guid_subformat.Data3 = GetWLE( &p_wf_ext->SubFormat.Data3 );
192 sf_tag_to_fourcc( &guid_subformat, &p_sys->fmt.i_codec, &psz_name );
194 i_extended = sizeof( WAVEFORMATEXTENSIBLE ) - sizeof( WAVEFORMATEX );
195 p_sys->fmt.i_extra -= i_extended;
197 i_channel_mask = GetDWLE( &p_wf_ext->dwChannelMask );
201 for( i = 0; i < sizeof(pi_channels_src)/sizeof(uint32_t); i++ )
203 if( i_channel_mask & pi_channels_src[i] )
205 if( !( p_sys->i_channel_mask & pi_channels_in[i] ) )
207 p_sys->i_channel_mask |= pi_channels_in[i];
210 if( i_match != p_sys->fmt.audio.i_channels )
212 msg_Err( p_demux, "Invalid/unsupported channel mask" );
213 p_sys->i_channel_mask = 0;
217 else if( GetWLE( &p_wf->wFormatTag ) == WAVE_FORMAT_PCM &&
218 p_sys->fmt.audio.i_channels > 2 && p_sys->fmt.audio.i_channels <= 9 )
220 for( int i = 0; i < p_sys->fmt.audio.i_channels; i++ )
221 p_sys->i_channel_mask |= pi_channels_in[i];
224 if( p_sys->i_channel_mask )
226 if( p_sys->fmt.i_codec == VLC_FOURCC('a','r','a','w') ||
227 p_sys->fmt.i_codec == VLC_FOURCC('p','c','m',' ') ||
228 p_sys->fmt.i_codec == VLC_FOURCC('a','f','l','t') )
229 p_sys->b_chan_reorder =
230 aout_CheckChannelReorder( pi_channels_in, NULL,
231 p_sys->i_channel_mask,
232 p_sys->fmt.audio.i_channels,
233 p_sys->pi_chan_table );
235 msg_Dbg( p_demux, "channel mask: %x, reordering: %i",
236 p_sys->i_channel_mask, (int)p_sys->b_chan_reorder );
239 p_sys->fmt.audio.i_physical_channels =
240 p_sys->fmt.audio.i_original_channels = p_sys->i_channel_mask;
242 if( p_sys->fmt.i_extra > 0 )
244 p_sys->fmt.p_extra = malloc( p_sys->fmt.i_extra );
245 if( !p_sys->fmt.p_extra )
247 p_sys->fmt.i_extra = 0;
250 memcpy( p_sys->fmt.p_extra, ((uint8_t *)p_wf) + i_extended,
251 p_sys->fmt.i_extra );
254 msg_Dbg( p_demux, "format: 0x%4.4x, fourcc: %4.4s, channels: %d, "
255 "freq: %u Hz, bitrate: %uKo/s, blockalign: %d, bits/samples: %d, "
257 GetWLE( &p_wf->wFormatTag ), (char *)&p_sys->fmt.i_codec,
258 p_sys->fmt.audio.i_channels, p_sys->fmt.audio.i_rate,
259 p_sys->fmt.i_bitrate / 8 / 1024, p_sys->fmt.audio.i_blockalign,
260 p_sys->fmt.audio.i_bitspersample, p_sys->fmt.i_extra );
265 switch( p_sys->fmt.i_codec )
267 case VLC_FOURCC( 'a', 'r', 'a', 'w' ):
268 case VLC_FOURCC( 'a', 'f', 'l', 't' ):
269 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
270 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
271 case VLC_FOURCC( 'm', 'l', 'a', 'w' ):
272 case VLC_FOURCC( 'p', 'c', 'm', ' ' ):
273 if( FrameInfo_PCM( &p_sys->i_frame_size, &p_sys->i_frame_samples,
277 case VLC_FOURCC( 'm', 's', 0x00, 0x02 ):
278 if( FrameInfo_MS_ADPCM( &p_sys->i_frame_size, &p_sys->i_frame_samples,
282 case VLC_FOURCC( 'm', 's', 0x00, 0x11 ):
283 if( FrameInfo_IMA_ADPCM( &p_sys->i_frame_size, &p_sys->i_frame_samples,
287 case VLC_FOURCC( 'm', 's', 0x00, 0x61 ):
288 case VLC_FOURCC( 'm', 's', 0x00, 0x62 ):
289 /* FIXME not sure at all FIXME */
290 if( FrameInfo_MS_ADPCM( &p_sys->i_frame_size, &p_sys->i_frame_samples,
294 case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
295 case VLC_FOURCC( 'a', '5', '2', ' ' ):
296 /* FIXME set end of area FIXME */
298 case VLC_FOURCC( 'a', 'g', 's', 'm' ):
299 if( FrameInfo_MSGSM( &p_sys->i_frame_size, &p_sys->i_frame_samples,
304 msg_Err( p_demux, "unsupported codec (%4.4s)",
305 (char*)&p_sys->fmt.i_codec );
309 if( p_sys->i_frame_size <= 0 || p_sys->i_frame_samples <= 0 )
311 msg_Dbg( p_demux, "invalid frame size" );
314 if( p_sys->fmt.audio.i_rate <= 0 )
316 msg_Dbg( p_demux, "invalid sample rate" );
320 msg_Dbg( p_demux, "found %s audio format", psz_name );
322 if( ChunkFind( p_demux, "data", &p_sys->i_data_size ) )
324 msg_Err( p_demux, "cannot find 'data' chunk" );
327 if( stream_Read( p_demux->s, NULL, 8 ) != 8 )
329 p_sys->i_data_pos = stream_Tell( p_demux->s );
331 if( p_sys->fmt.i_bitrate <= 0 )
333 p_sys->fmt.i_bitrate = (int64_t)p_sys->i_frame_size *
334 p_sys->fmt.audio.i_rate * 8 / p_sys->i_frame_samples;
337 p_sys->p_es = es_out_Add( p_demux->out, &p_sys->fmt );
339 date_Init( &p_sys->pts, p_sys->fmt.audio.i_rate, 1 );
340 date_Set( &p_sys->pts, 1 );
350 /*****************************************************************************
351 * Demux: read packet and send them to decoders
352 *****************************************************************************
353 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
354 *****************************************************************************/
355 static int Demux( demux_t *p_demux )
357 demux_sys_t *p_sys = p_demux->p_sys;
359 const int64_t i_pos = stream_Tell( p_demux->s );
361 if( p_sys->i_data_size > 0 &&
362 i_pos >= p_sys->i_data_pos + p_sys->i_data_size )
368 if( ( p_block = stream_Block( p_demux->s, p_sys->i_frame_size ) ) == NULL )
370 msg_Warn( p_demux, "cannot read data" );
375 p_block->i_pts = date_Increment( &p_sys->pts, p_sys->i_frame_samples );
378 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_block->i_pts );
380 /* Do the channel reordering */
381 if( p_sys->b_chan_reorder )
382 aout_ChannelReorder( p_block->p_buffer, p_block->i_buffer,
383 p_sys->fmt.audio.i_channels,
384 p_sys->pi_chan_table,
385 p_sys->fmt.audio.i_bitspersample );
387 es_out_Send( p_demux->out, p_sys->p_es, p_block );
392 /*****************************************************************************
393 * Close: frees unused data
394 *****************************************************************************/
395 static void Close ( vlc_object_t * p_this )
397 demux_t *p_demux = (demux_t*)p_this;
398 demux_sys_t *p_sys = p_demux->p_sys;
403 /*****************************************************************************
405 *****************************************************************************/
406 static int Control( demux_t *p_demux, int i_query, va_list args )
408 demux_sys_t *p_sys = p_demux->p_sys;
411 if( p_sys->i_data_size > 0 )
412 i_end = p_sys->i_data_pos + p_sys->i_data_size;
414 return demux_vaControlHelper( p_demux->s, p_sys->i_data_pos, i_end,
415 p_sys->fmt.i_bitrate,
416 p_sys->fmt.audio.i_blockalign,
420 /*****************************************************************************
422 *****************************************************************************/
423 static int ChunkFind( demux_t *p_demux, const char *fcc, unsigned int *pi_size )
425 const uint8_t *p_peek;
431 if( stream_Peek( p_demux->s, &p_peek, 8 ) < 8 )
433 msg_Err( p_demux, "cannot peek" );
437 i_size = GetDWLE( p_peek + 4 );
439 msg_Dbg( p_demux, "chunk: fcc=`%4.4s` size=%"PRIu32, p_peek, i_size );
441 if( !memcmp( p_peek, fcc, 4 ) )
451 if( stream_Read( p_demux->s, NULL, 8 ) != 8 ||
452 stream_Read( p_demux->s, NULL, i_size ) != (int)i_size ||
453 ( (i_size & 1) && stream_Read( p_demux->s, NULL, 1 ) != 1 ) )
458 static int FrameInfo_PCM( unsigned int *pi_size, int *pi_samples,
459 const es_format_t *p_fmt )
463 /* read samples for 50ms of */
464 *pi_samples = __MAX( p_fmt->audio.i_rate / 20, 1 );
466 i_bytes = *pi_samples * p_fmt->audio.i_channels *
467 ( (p_fmt->audio.i_bitspersample + 7) / 8 );
469 if( p_fmt->audio.i_blockalign > 0 )
471 const int i_modulo = i_bytes % p_fmt->audio.i_blockalign;
473 i_bytes += p_fmt->audio.i_blockalign - i_modulo;
480 static int FrameInfo_MS_ADPCM( unsigned int *pi_size, int *pi_samples,
481 const es_format_t *p_fmt )
483 if( p_fmt->audio.i_channels <= 0 )
486 *pi_samples = 2 + 2 * ( p_fmt->audio.i_blockalign -
487 7 * p_fmt->audio.i_channels ) / p_fmt->audio.i_channels;
488 *pi_size = p_fmt->audio.i_blockalign;
493 static int FrameInfo_IMA_ADPCM( unsigned int *pi_size, int *pi_samples,
494 const es_format_t *p_fmt )
496 if( p_fmt->audio.i_channels <= 0 )
499 *pi_samples = 2 * ( p_fmt->audio.i_blockalign -
500 4 * p_fmt->audio.i_channels ) / p_fmt->audio.i_channels;
501 *pi_size = p_fmt->audio.i_blockalign;
506 static int FrameInfo_MSGSM( unsigned int *pi_size, int *pi_samples,
507 const es_format_t *p_fmt )
509 if( p_fmt->i_bitrate <= 0 )
512 *pi_samples = ( p_fmt->audio.i_blockalign * p_fmt->audio.i_rate * 8)
514 *pi_size = p_fmt->audio.i_blockalign;