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 #define __EVEN( x ) (((x) + 1) & ~1)
78 static int ChunkFind( demux_t *, const char *, unsigned int * );
80 static void FrameInfo_IMA_ADPCM( demux_t *, unsigned int *, int * );
81 static void FrameInfo_MS_ADPCM ( demux_t *, unsigned int *, int * );
82 static void FrameInfo_PCM ( demux_t *, unsigned int *, int * );
84 static const uint32_t pi_channels_src[] =
85 { WAVE_SPEAKER_FRONT_LEFT, WAVE_SPEAKER_FRONT_RIGHT,
86 WAVE_SPEAKER_FRONT_CENTER, WAVE_SPEAKER_LOW_FREQUENCY,
87 WAVE_SPEAKER_BACK_LEFT, WAVE_SPEAKER_BACK_RIGHT,
88 WAVE_SPEAKER_SIDE_LEFT, WAVE_SPEAKER_SIDE_RIGHT, 0 };
89 static const uint32_t pi_channels_in[] =
90 { AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT,
91 AOUT_CHAN_CENTER, AOUT_CHAN_LFE,
92 AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT,
93 AOUT_CHAN_MIDDLELEFT, AOUT_CHAN_MIDDLERIGHT, 0 };
94 static const uint32_t pi_channels_out[] =
95 { AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT,
96 AOUT_CHAN_MIDDLELEFT, AOUT_CHAN_MIDDLERIGHT,
97 AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT,
98 AOUT_CHAN_CENTER, AOUT_CHAN_LFE, 0 };
100 /*****************************************************************************
101 * Open: check file and initializes structures
102 *****************************************************************************/
103 static int Open( vlc_object_t * p_this )
105 demux_t *p_demux = (demux_t*)p_this;
108 const uint8_t *p_peek;
110 unsigned int i_extended;
111 const char *psz_name;
113 WAVEFORMATEXTENSIBLE *p_wf_ext = NULL;
114 WAVEFORMATEX *p_wf = NULL;
116 /* Is it a wav file ? */
117 if( stream_Peek( p_demux->s, &p_peek, 12 ) < 12 ) return VLC_EGENERIC;
119 if( memcmp( p_peek, "RIFF", 4 ) || memcmp( &p_peek[8], "WAVE", 4 ) )
124 p_demux->pf_demux = Demux;
125 p_demux->pf_control = Control;
126 p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
131 p_sys->b_chan_reorder = 0;
132 p_sys->i_channel_mask = 0;
134 /* skip riff header */
135 stream_Read( p_demux->s, NULL, 12 ); /* cannot fail as peek succeed */
137 /* search fmt chunk */
138 if( ChunkFind( p_demux, "fmt ", &i_size ) )
140 msg_Err( p_demux, "cannot find 'fmt ' chunk" );
144 if( i_size < sizeof( WAVEFORMATEX ) )
146 msg_Err( p_demux, "invalid 'fmt ' chunk" );
149 stream_Read( p_demux->s, NULL, 8 ); /* Cannot fail */
151 /* load waveformatex */
152 p_wf_ext = malloc( i_size );
153 if( p_wf_ext == NULL )
156 p_wf = (WAVEFORMATEX *)p_wf_ext;
159 if( stream_Read( p_demux->s, p_wf, i_size ) != (int)i_size
160 || ( ( i_size & 1 ) && stream_Read( p_demux->s, NULL, 1 ) != 1 ) )
162 msg_Err( p_demux, "cannot load 'fmt ' chunk" );
166 es_format_Init( &p_sys->fmt, AUDIO_ES, 0 );
167 wf_tag_to_fourcc( GetWLE( &p_wf->wFormatTag ), &p_sys->fmt.i_codec,
169 p_sys->fmt.audio.i_channels = GetWLE ( &p_wf->nChannels );
170 p_sys->fmt.audio.i_rate = GetDWLE( &p_wf->nSamplesPerSec );
171 p_sys->fmt.audio.i_blockalign = GetWLE( &p_wf->nBlockAlign );
172 p_sys->fmt.i_bitrate = GetDWLE( &p_wf->nAvgBytesPerSec ) * 8;
173 p_sys->fmt.audio.i_bitspersample = GetWLE( &p_wf->wBitsPerSample );
174 p_sys->fmt.i_extra = GetWLE( &p_wf->cbSize );
177 /* Handle new WAVE_FORMAT_EXTENSIBLE wav files */
178 /* see the following link for more information:
179 * http://www.microsoft.com/whdc/device/audio/multichaud.mspx#EFAA */
180 if( GetWLE( &p_wf->wFormatTag ) == WAVE_FORMAT_EXTENSIBLE &&
181 i_size >= sizeof( WAVEFORMATEXTENSIBLE ) )
183 unsigned i, i_channel_mask;
186 guid_subformat = p_wf_ext->SubFormat;
187 guid_subformat.Data1 = GetDWLE( &p_wf_ext->SubFormat.Data1 );
188 guid_subformat.Data2 = GetWLE( &p_wf_ext->SubFormat.Data2 );
189 guid_subformat.Data3 = GetWLE( &p_wf_ext->SubFormat.Data3 );
191 sf_tag_to_fourcc( &guid_subformat, &p_sys->fmt.i_codec, &psz_name );
193 i_extended = sizeof( WAVEFORMATEXTENSIBLE ) - sizeof( WAVEFORMATEX );
194 p_sys->fmt.i_extra -= i_extended;
196 i_channel_mask = GetDWLE( &p_wf_ext->dwChannelMask );
199 for( i = 0; i < sizeof(pi_channels_src)/sizeof(uint32_t); i++ )
201 if( i_channel_mask & pi_channels_src[i] )
202 p_sys->i_channel_mask |= pi_channels_in[i];
205 if( p_sys->fmt.i_codec == VLC_FOURCC('a','r','a','w') ||
206 p_sys->fmt.i_codec == VLC_FOURCC('p','c','m',' ') ||
207 p_sys->fmt.i_codec == VLC_FOURCC('a','f','l','t') )
209 p_sys->b_chan_reorder =
210 aout_CheckChannelReorder( pi_channels_in, pi_channels_out,
211 p_sys->i_channel_mask,
212 p_sys->fmt.audio.i_channels,
213 p_sys->pi_chan_table );
215 msg_Dbg( p_demux, "channel mask: %x, reordering: %i",
216 p_sys->i_channel_mask, (int)p_sys->b_chan_reorder );
218 p_sys->fmt.audio.i_physical_channels =
219 p_sys->fmt.audio.i_original_channels =
220 p_sys->i_channel_mask;
223 if( p_sys->fmt.i_extra > 0 )
225 p_sys->fmt.p_extra = malloc( p_sys->fmt.i_extra );
226 memcpy( p_sys->fmt.p_extra, ((uint8_t *)p_wf) + i_extended,
227 p_sys->fmt.i_extra );
230 msg_Dbg( p_demux, "format: 0x%4.4x, fourcc: %4.4s, channels: %d, "
231 "freq: %u Hz, bitrate: %uKo/s, blockalign: %d, bits/samples: %d, "
233 GetWLE( &p_wf->wFormatTag ), (char *)&p_sys->fmt.i_codec,
234 p_sys->fmt.audio.i_channels, p_sys->fmt.audio.i_rate,
235 p_sys->fmt.i_bitrate / 8 / 1024, p_sys->fmt.audio.i_blockalign,
236 p_sys->fmt.audio.i_bitspersample, p_sys->fmt.i_extra );
241 switch( p_sys->fmt.i_codec )
243 case VLC_FOURCC( 'a', 'r', 'a', 'w' ):
244 case VLC_FOURCC( 'a', 'f', 'l', 't' ):
245 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
246 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
247 case VLC_FOURCC( 'm', 'l', 'a', 'w' ):
248 case VLC_FOURCC( 'p', 'c', 'm', ' ' ):
249 FrameInfo_PCM( p_demux, &p_sys->i_frame_size,
250 &p_sys->i_frame_samples );
252 case VLC_FOURCC( 'm', 's', 0x00, 0x02 ):
253 FrameInfo_MS_ADPCM( p_demux, &p_sys->i_frame_size,
254 &p_sys->i_frame_samples );
256 case VLC_FOURCC( 'm', 's', 0x00, 0x11 ):
257 FrameInfo_IMA_ADPCM( p_demux, &p_sys->i_frame_size,
258 &p_sys->i_frame_samples );
260 case VLC_FOURCC( 'm', 's', 0x00, 0x61 ):
261 case VLC_FOURCC( 'm', 's', 0x00, 0x62 ):
262 /* FIXME not sure at all FIXME */
263 FrameInfo_MS_ADPCM( p_demux, &p_sys->i_frame_size,
264 &p_sys->i_frame_samples );
266 case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
267 case VLC_FOURCC( 'a', '5', '2', ' ' ):
268 /* FIXME set end of area FIXME */
271 msg_Err( p_demux, "unsupported codec (%4.4s)",
272 (char*)&p_sys->fmt.i_codec );
276 msg_Dbg( p_demux, "found %s audio format", psz_name );
278 if( ChunkFind( p_demux, "data", &p_sys->i_data_size ) )
280 msg_Err( p_demux, "cannot find 'data' chunk" );
283 stream_Read( p_demux->s, NULL, 8 ); /* Cannot fail */
284 p_sys->i_data_pos = stream_Tell( p_demux->s );
286 if( p_sys->fmt.i_bitrate <= 0 )
288 p_sys->fmt.i_bitrate = (mtime_t)p_sys->i_frame_size *
289 p_sys->fmt.audio.i_rate * 8 / p_sys->i_frame_samples;
292 p_sys->p_es = es_out_Add( p_demux->out, &p_sys->fmt );
294 date_Init( &p_sys->pts, p_sys->fmt.audio.i_rate, 1 );
295 date_Set( &p_sys->pts, 1 );
305 /*****************************************************************************
306 * Demux: read packet and send them to decoders
307 *****************************************************************************
308 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
309 *****************************************************************************/
310 static int Demux( demux_t *p_demux )
312 demux_sys_t *p_sys = p_demux->p_sys;
316 i_pos = stream_Tell( p_demux->s );
318 if( p_sys->i_data_size > 0 &&
319 i_pos >= p_sys->i_data_pos + p_sys->i_data_size )
325 if( ( p_block = stream_Block( p_demux->s, p_sys->i_frame_size ) ) == NULL )
327 msg_Warn( p_demux, "cannot read data" );
331 p_block->i_dts = p_block->i_pts =
332 date_Increment( &p_sys->pts, p_sys->i_frame_samples );
335 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_block->i_pts );
337 /* Do the channel reordering */
338 if( p_sys->b_chan_reorder )
339 aout_ChannelReorder( p_block->p_buffer, p_block->i_buffer,
340 p_sys->fmt.audio.i_channels,
341 p_sys->pi_chan_table,
342 p_sys->fmt.audio.i_bitspersample );
344 es_out_Send( p_demux->out, p_sys->p_es, p_block );
349 /*****************************************************************************
350 * Close: frees unused data
351 *****************************************************************************/
352 static void Close ( vlc_object_t * p_this )
354 demux_t *p_demux = (demux_t*)p_this;
355 demux_sys_t *p_sys = p_demux->p_sys;
360 /*****************************************************************************
362 *****************************************************************************/
363 static int Control( demux_t *p_demux, int i_query, va_list args )
365 demux_sys_t *p_sys = p_demux->p_sys;
368 if( p_sys->i_data_size > 0 )
370 i_end = p_sys->i_data_pos + p_sys->i_data_size;
373 return demux_vaControlHelper( p_demux->s, p_sys->i_data_pos, i_end,
374 p_sys->fmt.i_bitrate,
375 p_sys->fmt.audio.i_blockalign,
379 /*****************************************************************************
381 *****************************************************************************/
382 static int ChunkFind( demux_t *p_demux, const char *fcc, unsigned int *pi_size )
384 const uint8_t *p_peek;
390 if( stream_Peek( p_demux->s, &p_peek, 8 ) < 8 )
392 msg_Err( p_demux, "cannot peek" );
396 i_size = GetDWLE( p_peek + 4 );
398 msg_Dbg( p_demux, "chunk: fcc=`%4.4s` size=%"PRIu32, p_peek, i_size );
400 if( !memcmp( p_peek, fcc, 4 ) )
410 if( stream_Read( p_demux->s, NULL, 8 ) != 8
411 || stream_Read( p_demux->s, NULL, i_size ) != i_size
412 || ((i_size & 1) && stream_Read( p_demux->s, NULL, 1 ) != 1 ))
417 static void FrameInfo_PCM( demux_t *p_demux, unsigned int *pi_size,
420 demux_sys_t *p_sys = p_demux->p_sys;
421 int i_bytes, i_modulo;
423 /* read samples for 50ms of */
424 *pi_samples = __MAX( p_sys->fmt.audio.i_rate / 20, 1 );
426 i_bytes = *pi_samples * p_sys->fmt.audio.i_channels *
427 ( (p_sys->fmt.audio.i_bitspersample + 7) / 8 );
429 if( p_sys->fmt.audio.i_blockalign > 0 )
431 if( ( i_modulo = i_bytes % p_sys->fmt.audio.i_blockalign ) != 0 )
433 i_bytes += p_sys->fmt.audio.i_blockalign - i_modulo;
440 static void FrameInfo_MS_ADPCM( demux_t *p_demux, unsigned int *pi_size,
443 demux_sys_t *p_sys = p_demux->p_sys;
445 *pi_samples = 2 + 2 * ( p_sys->fmt.audio.i_blockalign -
446 7 * p_sys->fmt.audio.i_channels ) / p_sys->fmt.audio.i_channels;
448 *pi_size = p_sys->fmt.audio.i_blockalign;
451 static void FrameInfo_IMA_ADPCM( demux_t *p_demux, unsigned int *pi_size,
454 demux_sys_t *p_sys = p_demux->p_sys;
456 *pi_samples = 2 * ( p_sys->fmt.audio.i_blockalign -
457 4 * p_sys->fmt.audio.i_channels ) / p_sys->fmt.audio.i_channels;
459 *pi_size = p_sys->fmt.audio.i_blockalign;