1 /*****************************************************************************
2 * wav.c: wav muxer module for vlc
3 *****************************************************************************
4 * Copyright (C) 2004, 2006 the VideoLAN team
7 * Authors: Gildas Bazin <gbazin@videolan.org>
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 *****************************************************************************/
31 #include <vlc_block.h>
32 #include <vlc_codecs.h>
34 /*****************************************************************************
36 *****************************************************************************/
37 static int Open ( vlc_object_t * );
38 static void Close ( vlc_object_t * );
41 set_description( _("WAV muxer") );
42 set_capability( "sout mux", 5 );
43 set_category( CAT_SOUT );
44 set_subcategory( SUBCAT_SOUT_MUX );
45 set_callbacks( Open, Close );
46 add_shortcut( "wav" );
49 /*****************************************************************************
51 *****************************************************************************/
52 static int Control ( sout_mux_t *, int, va_list );
53 static int AddStream( sout_mux_t *, sout_input_t * );
54 static int DelStream( sout_mux_t *, sout_input_t * );
55 static int Mux ( sout_mux_t * );
57 #define MAX_CHANNELS 6
67 /* Wave header for the output data */
68 uint32_t waveheader[5];
69 WAVEFORMATEXTENSIBLE waveformat;
70 uint32_t waveheader2[2];
72 uint32_t i_channel_mask;
73 vlc_bool_t b_chan_reorder; /* do we need channel reordering */
74 int pi_chan_table[AOUT_CHAN_MAX];
78 static const uint32_t pi_channels_src[] =
79 { AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT,
80 AOUT_CHAN_MIDDLELEFT, AOUT_CHAN_MIDDLERIGHT,
81 AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT,
82 AOUT_CHAN_CENTER, AOUT_CHAN_LFE, 0 };
83 static const uint32_t pi_channels_in[] =
84 { WAVE_SPEAKER_FRONT_LEFT, WAVE_SPEAKER_FRONT_RIGHT,
85 WAVE_SPEAKER_SIDE_LEFT, WAVE_SPEAKER_SIDE_RIGHT,
86 WAVE_SPEAKER_BACK_LEFT, WAVE_SPEAKER_BACK_RIGHT,
87 WAVE_SPEAKER_FRONT_CENTER, WAVE_SPEAKER_LOW_FREQUENCY, 0 };
88 static const uint32_t pi_channels_out[] =
89 { WAVE_SPEAKER_FRONT_LEFT, WAVE_SPEAKER_FRONT_RIGHT,
90 WAVE_SPEAKER_FRONT_CENTER, WAVE_SPEAKER_LOW_FREQUENCY,
91 WAVE_SPEAKER_BACK_LEFT, WAVE_SPEAKER_BACK_RIGHT,
92 WAVE_SPEAKER_SIDE_LEFT, WAVE_SPEAKER_SIDE_RIGHT, 0 };
94 /*****************************************************************************
96 *****************************************************************************/
97 static int Open( vlc_object_t *p_this )
99 sout_mux_t *p_mux = (sout_mux_t*)p_this;
100 sout_mux_sys_t *p_sys;
102 p_mux->pf_control = Control;
103 p_mux->pf_addstream = AddStream;
104 p_mux->pf_delstream = DelStream;
107 p_mux->p_sys = p_sys = malloc( sizeof( sout_mux_sys_t ) );
108 p_sys->b_used = VLC_FALSE;
109 p_sys->b_header = VLC_TRUE;
112 p_sys->b_chan_reorder = 0;
117 /*****************************************************************************
119 *****************************************************************************/
120 static void Close( vlc_object_t * p_this )
122 sout_mux_t *p_mux = (sout_mux_t*)p_this;
123 sout_mux_sys_t *p_sys = p_mux->p_sys;
127 static int Control( sout_mux_t *p_mux, int i_query, va_list args )
134 case MUX_CAN_ADD_STREAM_WHILE_MUXING:
135 pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
136 *pb_bool = VLC_FALSE;
139 case MUX_GET_ADD_STREAM_WAIT:
140 pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
145 ppsz = (char**)va_arg( args, char ** );
146 *ppsz = strdup( "audio/wav" );
153 static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
155 GUID subformat_guid = {0, 0, 0x10,{0x80, 0, 0, 0xaa, 0, 0x38, 0x9b, 0x71}};
156 sout_mux_sys_t *p_sys = p_mux->p_sys;
157 WAVEFORMATEX *p_waveformat = &p_sys->waveformat.Format;
158 int i_bytes_per_sample, i_format;
161 if( p_input->p_fmt->i_cat != AUDIO_ES )
163 msg_Dbg( p_mux, "not an audio stream" );
169 msg_Dbg( p_mux, "can't add more than 1 stream" );
173 msg_Dbg( p_mux, "adding %i input channels, %iHz",
174 p_input->p_fmt->audio.i_channels,
175 p_input->p_fmt->audio.i_rate );
177 p_sys->i_channel_mask = 0;
178 if( p_input->p_fmt->audio.i_physical_channels )
182 for( i = 0; i < sizeof(pi_channels_in)/sizeof(uint32_t); i++ )
184 if( p_input->p_fmt->audio.i_physical_channels & pi_channels_src[i])
185 p_sys->i_channel_mask |= pi_channels_in[i];
188 p_sys->b_chan_reorder =
189 aout_CheckChannelReorder( pi_channels_in, pi_channels_out,
190 p_sys->i_channel_mask,
191 p_input->p_fmt->audio.i_channels,
192 p_sys->pi_chan_table );
194 msg_Dbg( p_mux, "channel mask: %x, reordering: %i",
195 p_sys->i_channel_mask, (int)p_sys->b_chan_reorder );
198 i_format = p_input->p_fmt->i_codec == VLC_FOURCC('f', 'l', '3', '2') ?
199 WAVE_FORMAT_IEEE_FLOAT : WAVE_FORMAT_PCM;
200 b_ext = p_sys->b_ext = p_input->p_fmt->audio.i_channels > 2;
202 /* Build a WAV header for the output data */
203 p_sys->waveheader[0] = VLC_FOURCC('R', 'I', 'F', 'F'); /* MainChunkID */
204 SetDWLE( &p_sys->waveheader[1], 0 ); /* Length */
205 p_sys->waveheader[2] = VLC_FOURCC('W', 'A', 'V', 'E'); /* ChunkTypeID */
206 p_sys->waveheader[3] = VLC_FOURCC('f', 'm', 't', ' '); /* SubChunkID */
207 SetDWLE( &p_sys->waveheader[4], b_ext ? 40 : 16 ); /* SubChunkLength */
209 p_sys->waveheader2[0] = VLC_FOURCC('d', 'a', 't', 'a'); /* DataChunkID */
210 SetDWLE( &p_sys->waveheader2[1], 0 ); /* DataLength */
212 /* Build a WAVEVFORMAT header for the output data */
213 memset( &p_sys->waveformat, 0, sizeof(WAVEFORMATEXTENSIBLE) );
214 SetWLE( &p_waveformat->wFormatTag,
215 b_ext ? WAVE_FORMAT_EXTENSIBLE : i_format );
216 SetWLE( &p_waveformat->nChannels,
217 p_input->p_fmt->audio.i_channels );
218 SetDWLE( &p_waveformat->nSamplesPerSec, p_input->p_fmt->audio.i_rate );
219 i_bytes_per_sample = p_input->p_fmt->audio.i_channels *
220 p_input->p_fmt->audio.i_bitspersample / 8;
221 SetDWLE( &p_waveformat->nAvgBytesPerSec,
222 i_bytes_per_sample * p_input->p_fmt->audio.i_rate );
223 SetWLE( &p_waveformat->nBlockAlign, i_bytes_per_sample );
224 SetWLE( &p_waveformat->wBitsPerSample,
225 p_input->p_fmt->audio.i_bitspersample );
226 SetWLE( &p_waveformat->cbSize, 22 );
227 SetWLE( &p_sys->waveformat.Samples.wValidBitsPerSample,
228 p_input->p_fmt->audio.i_bitspersample );
229 SetDWLE( &p_sys->waveformat.dwChannelMask,
230 p_sys->i_channel_mask );
231 p_sys->waveformat.SubFormat = subformat_guid;
232 p_sys->waveformat.SubFormat.Data1 = i_format;
235 p_sys->b_used = VLC_TRUE;
240 static block_t *GetHeader( sout_mux_t *p_mux )
242 sout_mux_sys_t *p_sys = p_mux->p_sys;
244 block_New( p_mux, sizeof( WAVEFORMATEXTENSIBLE ) + 7 * 4 );
246 SetDWLE( &p_sys->waveheader[1],
247 20 + (p_sys->b_ext ? 40 : 16) + p_sys->i_data ); /* Length */
248 SetDWLE( &p_sys->waveheader2[1], p_sys->i_data ); /* DataLength */
250 memcpy( p_block->p_buffer, &p_sys->waveheader, 5 * 4 );
251 memcpy( p_block->p_buffer + 5 * 4, &p_sys->waveformat,
252 sizeof( WAVEFORMATEXTENSIBLE ) );
253 memcpy( p_block->p_buffer + 5 * 4 +
254 (p_sys->b_ext ? sizeof( WAVEFORMATEXTENSIBLE ) : 16),
255 &p_sys->waveheader2, 2 * 4 );
256 if( !p_sys->b_ext ) p_block->i_buffer -= 24;
260 static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
262 msg_Dbg( p_mux, "removing input" );
264 msg_Dbg( p_mux, "writing header data" );
265 if( !sout_AccessOutSeek( p_mux->p_access, 0 ) )
267 sout_AccessOutWrite( p_mux->p_access, GetHeader( p_mux ) );
273 static int Mux( sout_mux_t *p_mux )
275 sout_mux_sys_t *p_sys = p_mux->p_sys;
276 sout_input_t *p_input;
278 if( !p_mux->i_nb_inputs ) return VLC_SUCCESS;
280 if( p_sys->b_header )
282 msg_Dbg( p_mux, "writing header data" );
283 sout_AccessOutWrite( p_mux->p_access, GetHeader( p_mux ) );
285 p_sys->b_header = VLC_FALSE;
287 p_input = p_mux->pp_inputs[0];
288 while( block_FifoCount( p_input->p_fifo ) > 0 )
290 block_t *p_block = block_FifoGet( p_input->p_fifo );
291 p_sys->i_data += p_block->i_buffer;
293 /* Do the channel reordering */
294 if( p_sys->b_chan_reorder )
295 aout_ChannelReorder( p_block->p_buffer, p_block->i_buffer,
296 p_input->p_fmt->audio.i_channels,
297 p_sys->pi_chan_table,
298 p_input->p_fmt->audio.i_bitspersample );
300 sout_AccessOutWrite( p_mux->p_access, p_block );