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 *****************************************************************************/
35 #include <vlc_block.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( _("WAV muxer") );
46 set_capability( "sout mux", 5 );
47 set_category( CAT_SOUT );
48 set_subcategory( SUBCAT_SOUT_MUX );
49 set_callbacks( Open, Close );
50 add_shortcut( "wav" );
53 /*****************************************************************************
55 *****************************************************************************/
56 static int Control ( sout_mux_t *, int, va_list );
57 static int AddStream( sout_mux_t *, sout_input_t * );
58 static int DelStream( sout_mux_t *, sout_input_t * );
59 static int Mux ( sout_mux_t * );
61 #define MAX_CHANNELS 6
71 /* Wave header for the output data */
72 uint32_t waveheader[5];
73 WAVEFORMATEXTENSIBLE waveformat;
74 uint32_t waveheader2[2];
76 uint32_t i_channel_mask;
77 vlc_bool_t b_chan_reorder; /* do we need channel reordering */
78 int pi_chan_table[AOUT_CHAN_MAX];
82 static const uint32_t pi_channels_src[] =
83 { AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT,
84 AOUT_CHAN_MIDDLELEFT, AOUT_CHAN_MIDDLERIGHT,
85 AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT,
86 AOUT_CHAN_CENTER, AOUT_CHAN_LFE, 0 };
87 static const uint32_t pi_channels_in[] =
88 { WAVE_SPEAKER_FRONT_LEFT, WAVE_SPEAKER_FRONT_RIGHT,
89 WAVE_SPEAKER_SIDE_LEFT, WAVE_SPEAKER_SIDE_RIGHT,
90 WAVE_SPEAKER_BACK_LEFT, WAVE_SPEAKER_BACK_RIGHT,
91 WAVE_SPEAKER_FRONT_CENTER, WAVE_SPEAKER_LOW_FREQUENCY, 0 };
92 static const uint32_t pi_channels_out[] =
93 { WAVE_SPEAKER_FRONT_LEFT, WAVE_SPEAKER_FRONT_RIGHT,
94 WAVE_SPEAKER_FRONT_CENTER, WAVE_SPEAKER_LOW_FREQUENCY,
95 WAVE_SPEAKER_BACK_LEFT, WAVE_SPEAKER_BACK_RIGHT,
96 WAVE_SPEAKER_SIDE_LEFT, WAVE_SPEAKER_SIDE_RIGHT, 0 };
98 /*****************************************************************************
100 *****************************************************************************/
101 static int Open( vlc_object_t *p_this )
103 sout_mux_t *p_mux = (sout_mux_t*)p_this;
104 sout_mux_sys_t *p_sys;
106 p_mux->pf_control = Control;
107 p_mux->pf_addstream = AddStream;
108 p_mux->pf_delstream = DelStream;
111 p_mux->p_sys = p_sys = malloc( sizeof( sout_mux_sys_t ) );
112 p_sys->b_used = VLC_FALSE;
113 p_sys->b_header = VLC_TRUE;
116 p_sys->b_chan_reorder = 0;
121 /*****************************************************************************
123 *****************************************************************************/
124 static void Close( vlc_object_t * p_this )
126 sout_mux_t *p_mux = (sout_mux_t*)p_this;
127 sout_mux_sys_t *p_sys = p_mux->p_sys;
131 static int Control( sout_mux_t *p_mux, int i_query, va_list args )
139 case MUX_CAN_ADD_STREAM_WHILE_MUXING:
140 pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
141 *pb_bool = VLC_FALSE;
144 case MUX_GET_ADD_STREAM_WAIT:
145 pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
150 ppsz = (char**)va_arg( args, char ** );
151 *ppsz = strdup( "audio/wav" );
158 static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
160 GUID subformat_guid = {0, 0, 0x10,{0x80, 0, 0, 0xaa, 0, 0x38, 0x9b, 0x71}};
161 sout_mux_sys_t *p_sys = p_mux->p_sys;
162 WAVEFORMATEX *p_waveformat = &p_sys->waveformat.Format;
163 int i_bytes_per_sample, i_format;
166 if( p_input->p_fmt->i_cat != AUDIO_ES )
168 msg_Dbg( p_mux, "not an audio stream" );
174 msg_Dbg( p_mux, "can't add more than 1 stream" );
178 msg_Dbg( p_mux, "adding %i input channels, %iHz",
179 p_input->p_fmt->audio.i_channels,
180 p_input->p_fmt->audio.i_rate );
182 p_sys->i_channel_mask = 0;
183 if( p_input->p_fmt->audio.i_physical_channels )
187 for( i = 0; i < sizeof(pi_channels_in)/sizeof(uint32_t); i++ )
189 if( p_input->p_fmt->audio.i_physical_channels & pi_channels_src[i])
190 p_sys->i_channel_mask |= pi_channels_in[i];
193 p_sys->b_chan_reorder =
194 aout_CheckChannelReorder( pi_channels_in, pi_channels_out,
195 p_sys->i_channel_mask,
196 p_input->p_fmt->audio.i_channels,
197 p_sys->pi_chan_table );
199 msg_Dbg( p_mux, "channel mask: %x, reordering: %i",
200 p_sys->i_channel_mask, (int)p_sys->b_chan_reorder );
203 i_format = p_input->p_fmt->i_codec == VLC_FOURCC('f', 'l', '3', '2') ?
204 WAVE_FORMAT_IEEE_FLOAT : WAVE_FORMAT_PCM;
205 b_ext = p_sys->b_ext = p_input->p_fmt->audio.i_channels > 2;
207 /* Build a WAV header for the output data */
208 p_sys->waveheader[0] = VLC_FOURCC('R', 'I', 'F', 'F'); /* MainChunkID */
209 SetDWLE( &p_sys->waveheader[1], 0 ); /* Length */
210 p_sys->waveheader[2] = VLC_FOURCC('W', 'A', 'V', 'E'); /* ChunkTypeID */
211 p_sys->waveheader[3] = VLC_FOURCC('f', 'm', 't', ' '); /* SubChunkID */
212 SetDWLE( &p_sys->waveheader[4], b_ext ? 40 : 16 ); /* SubChunkLength */
214 p_sys->waveheader2[0] = VLC_FOURCC('d', 'a', 't', 'a'); /* DataChunkID */
215 SetDWLE( &p_sys->waveheader2[1], 0 ); /* DataLength */
217 /* Build a WAVEVFORMAT header for the output data */
218 memset( &p_sys->waveformat, 0, sizeof(WAVEFORMATEXTENSIBLE) );
219 SetWLE( &p_waveformat->wFormatTag,
220 b_ext ? WAVE_FORMAT_EXTENSIBLE : i_format );
221 SetWLE( &p_waveformat->nChannels,
222 p_input->p_fmt->audio.i_channels );
223 SetDWLE( &p_waveformat->nSamplesPerSec, p_input->p_fmt->audio.i_rate );
224 i_bytes_per_sample = p_input->p_fmt->audio.i_channels *
225 p_input->p_fmt->audio.i_bitspersample / 8;
226 SetDWLE( &p_waveformat->nAvgBytesPerSec,
227 i_bytes_per_sample * p_input->p_fmt->audio.i_rate );
228 SetWLE( &p_waveformat->nBlockAlign, i_bytes_per_sample );
229 SetWLE( &p_waveformat->wBitsPerSample,
230 p_input->p_fmt->audio.i_bitspersample );
231 SetWLE( &p_waveformat->cbSize, 22 );
232 SetWLE( &p_sys->waveformat.Samples.wValidBitsPerSample,
233 p_input->p_fmt->audio.i_bitspersample );
234 SetDWLE( &p_sys->waveformat.dwChannelMask,
235 p_sys->i_channel_mask );
236 p_sys->waveformat.SubFormat = subformat_guid;
237 p_sys->waveformat.SubFormat.Data1 = i_format;
240 p_sys->b_used = VLC_TRUE;
245 static block_t *GetHeader( sout_mux_t *p_mux )
247 sout_mux_sys_t *p_sys = p_mux->p_sys;
249 block_New( p_mux, sizeof( WAVEFORMATEXTENSIBLE ) + 7 * 4 );
251 SetDWLE( &p_sys->waveheader[1],
252 20 + (p_sys->b_ext ? 40 : 16) + p_sys->i_data ); /* Length */
253 SetDWLE( &p_sys->waveheader2[1], p_sys->i_data ); /* DataLength */
255 memcpy( p_block->p_buffer, &p_sys->waveheader, 5 * 4 );
256 memcpy( p_block->p_buffer + 5 * 4, &p_sys->waveformat,
257 sizeof( WAVEFORMATEXTENSIBLE ) );
258 memcpy( p_block->p_buffer + 5 * 4 +
259 (p_sys->b_ext ? sizeof( WAVEFORMATEXTENSIBLE ) : 16),
260 &p_sys->waveheader2, 2 * 4 );
261 if( !p_sys->b_ext ) p_block->i_buffer -= 24;
265 static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
268 msg_Dbg( p_mux, "removing input" );
270 msg_Dbg( p_mux, "writing header data" );
271 if( sout_AccessOutSeek( p_mux->p_access, 0 ) == VLC_SUCCESS )
273 sout_AccessOutWrite( p_mux->p_access, GetHeader( p_mux ) );
279 static int Mux( sout_mux_t *p_mux )
281 sout_mux_sys_t *p_sys = p_mux->p_sys;
282 sout_input_t *p_input;
284 if( !p_mux->i_nb_inputs ) return VLC_SUCCESS;
286 if( p_sys->b_header )
288 msg_Dbg( p_mux, "writing header data" );
289 sout_AccessOutWrite( p_mux->p_access, GetHeader( p_mux ) );
291 p_sys->b_header = VLC_FALSE;
293 p_input = p_mux->pp_inputs[0];
294 while( block_FifoCount( p_input->p_fifo ) > 0 )
296 block_t *p_block = block_FifoGet( p_input->p_fifo );
297 p_sys->i_data += p_block->i_buffer;
299 /* Do the channel reordering */
300 if( p_sys->b_chan_reorder )
301 aout_ChannelReorder( p_block->p_buffer, p_block->i_buffer,
302 p_input->p_fmt->audio.i_channels,
303 p_sys->pi_chan_table,
304 p_input->p_fmt->audio.i_bitspersample );
306 sout_AccessOutWrite( p_mux->p_access, p_block );