1 /*****************************************************************************
2 * mpc.c : MPC stream input module for vlc
3 *****************************************************************************
4 * Copyright (C) 2001 the VideoLAN team
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr.com>
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 *****************************************************************************/
28 #include <vlc_demux.h>
29 #include <vlc_input.h>
30 #include <vlc_codec.h>
33 #include <mpcdec/mpcdec.h>
36 * - test stream version 4..6
37 * - test fixed float version
41 * It is done the ugly way (the demux does the decode stage... but it works
44 /*****************************************************************************
46 *****************************************************************************/
47 #define REPLAYGAIN_TYPE_TEXT N_("Replay Gain type" )
48 #define REPLAYGAIN_TYPE_LONGTEXT N_( "Musepack can have a title-specific " \
49 "replay gain (volume control) or an album-specific one. " \
50 "Choose which type you want to use" )
52 static int Open ( vlc_object_t * );
53 static void Close ( vlc_object_t * );
56 set_category( CAT_INPUT );
57 set_subcategory( SUBCAT_INPUT_DEMUX );
58 set_description( _("MusePack demuxer") );
59 set_capability( "demux2", 145 );
61 set_callbacks( Open, Close );
62 add_shortcut( "mpc" );
65 /*****************************************************************************
67 *****************************************************************************/
68 static int Demux ( demux_t * );
69 static int Control( demux_t *, int, va_list );
86 mpc_int32_t ReaderRead( void *p_private, void *dst, mpc_int32_t i_size );
87 mpc_bool_t ReaderSeek( void *p_private, mpc_int32_t i_offset );
88 mpc_int32_t ReaderTell( void *p_private);
89 mpc_int32_t ReaderGetSize( void *p_private );
90 mpc_bool_t ReaderCanSeek( void *p_private );
92 /*****************************************************************************
93 * Open: initializes ES structures
94 *****************************************************************************/
95 static int Open( vlc_object_t * p_this )
97 demux_t *p_demux = (demux_t*)p_this;
103 if( stream_Peek( p_demux->s, &p_peek, 4 ) < 4 )
106 if( memcmp( p_peek, "MP+", 3 ) )
108 /* for v4..6 we check extension file */
109 const int i_version = (GetDWLE( p_peek ) >> 11)&0x3ff;
111 if( i_version < 4 || i_version > 6 )
114 if( !p_demux->psz_demux || strcmp( p_demux->psz_demux, "mpc" ) )
116 /* Check file name extension */
118 if( !p_demux->psz_path )
121 i_len = strlen( p_demux->psz_path );
123 ( strcasecmp( &p_demux->psz_path[i_len-4], ".mpc" ) &&
124 strcasecmp( &p_demux->psz_path[i_len-4], ".mp+" ) &&
125 strcasecmp( &p_demux->psz_path[i_len-4], ".mpp" ) ) )
131 p_sys = malloc( sizeof( demux_sys_t ) );
132 memset( p_sys, 0, sizeof(demux_sys_t) );
134 p_sys->i_position = 0;
136 p_sys->reader.read = ReaderRead;
137 p_sys->reader.seek = ReaderSeek;
138 p_sys->reader.tell = ReaderTell;
139 p_sys->reader.get_size = ReaderGetSize;
140 p_sys->reader.canseek = ReaderCanSeek;
141 p_sys->reader.data = p_demux;
144 mpc_streaminfo_init( &p_sys->info );
145 if( mpc_streaminfo_read( &p_sys->info, &p_sys->reader ) != ERROR_CODE_OK )
153 mpc_decoder_setup( &p_sys->decoder, &p_sys->reader );
154 if( !mpc_decoder_initialize( &p_sys->decoder, &p_sys->info ) )
161 /* Fill p_demux fields */
162 p_demux->pf_demux = Demux;
163 p_demux->pf_control = Control;
164 p_demux->p_sys = p_sys;
167 #ifndef MPC_FIXED_POINT
168 es_format_Init( &fmt, AUDIO_ES, VLC_FOURCC( 'f', 'l', '3', '2' ) );
170 # ifdef WORDS_BIGENDIAN
171 es_format_Init( &fmt, AUDIO_ES, VLC_FOURCC( 's', '3', '2', 'b' ) );
173 es_format_Init( &fmt, AUDIO_ES, VLC_FOURCC( 's', '3', '2', 'l' ) );
176 fmt.audio.i_channels = p_sys->info.channels;
177 fmt.audio.i_rate = p_sys->info.sample_freq;
178 fmt.audio.i_blockalign = 4*fmt.audio.i_channels;
179 fmt.audio.i_bitspersample = 32;
180 fmt.i_bitrate = fmt.i_bitrate * fmt.audio.i_channels *
181 fmt.audio.i_bitspersample;
182 if( p_sys->info.peak_title > 0 )
184 fmt.audio_replay_gain.pb_peak[AUDIO_REPLAY_GAIN_TRACK] = VLC_TRUE;
185 fmt.audio_replay_gain.pf_peak[AUDIO_REPLAY_GAIN_TRACK] = (float)p_sys->info.peak_title / 32767.0;
186 fmt.audio_replay_gain.pb_gain[AUDIO_REPLAY_GAIN_TRACK] = VLC_TRUE;
187 fmt.audio_replay_gain.pf_gain[AUDIO_REPLAY_GAIN_TRACK] = (float)p_sys->info.gain_title / 100.0;
189 if( p_sys->info.peak_album > 0 )
191 fmt.audio_replay_gain.pb_peak[AUDIO_REPLAY_GAIN_ALBUM] = VLC_TRUE;
192 fmt.audio_replay_gain.pf_peak[AUDIO_REPLAY_GAIN_ALBUM] = (float)p_sys->info.peak_album / 32767.0;
193 fmt.audio_replay_gain.pb_gain[AUDIO_REPLAY_GAIN_ALBUM] = VLC_TRUE;
194 fmt.audio_replay_gain.pf_gain[AUDIO_REPLAY_GAIN_ALBUM] = (float)p_sys->info.gain_album / 100.0;
197 /* Parse possible id3 header */
198 if( ( p_id3 = module_Need( p_demux, "meta reader", NULL, 0 ) ) )
200 p_sys->p_meta = (vlc_meta_t *)p_demux->p_private;
201 p_demux->p_private = NULL;
202 module_Unneed( p_demux, p_id3 );
206 p_sys->p_meta = vlc_meta_New();
208 vlc_audio_replay_gain_MergeFromMeta( &fmt.audio_replay_gain, p_sys->p_meta );
209 p_sys->p_es = es_out_Add( p_demux->out, &fmt );
214 /*****************************************************************************
215 * Close: frees unused data
216 *****************************************************************************/
217 static void Close( vlc_object_t * p_this )
219 demux_t *p_demux = (demux_t*)p_this;
220 demux_sys_t *p_sys = p_demux->p_sys;
225 /*****************************************************************************
227 *****************************************************************************
228 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
229 *****************************************************************************/
230 static int Demux( demux_t *p_demux )
232 demux_sys_t *p_sys = p_demux->p_sys;
236 p_data = block_New( p_demux,
237 MPC_DECODER_BUFFER_LENGTH*sizeof(MPC_SAMPLE_FORMAT) );
238 i_ret = mpc_decoder_decode( &p_sys->decoder,
239 (MPC_SAMPLE_FORMAT*)p_data->p_buffer,
243 block_Release( p_data );
244 return i_ret < 0 ? -1 : 0;
248 p_data->i_buffer = i_ret * sizeof(MPC_SAMPLE_FORMAT) * p_sys->info.channels;
249 p_data->i_dts = p_data->i_pts =
250 1 + I64C(1000000) * p_sys->i_position / p_sys->info.sample_freq;
252 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_data->i_dts );
254 es_out_Send( p_demux->out, p_sys->p_es, p_data );
257 p_sys->i_position += i_ret;
262 /*****************************************************************************
264 *****************************************************************************/
265 static int Control( demux_t *p_demux, int i_query, va_list args )
267 demux_sys_t *p_sys = p_demux->p_sys;
275 p_meta = (vlc_meta_t *)va_arg( args, vlc_meta_t* );
277 vlc_meta_Merge( p_meta, p_sys->p_meta );
282 case DEMUX_GET_LENGTH:
283 pi64 = (int64_t*)va_arg( args, int64_t * );
284 *pi64 = I64C(1000000) * p_sys->info.pcm_samples /
285 p_sys->info.sample_freq;
288 case DEMUX_GET_POSITION:
289 pf = (double*)va_arg( args, double * );
290 if( p_sys->info.pcm_samples > 0 )
291 *pf = (double) p_sys->i_position /
292 (double)p_sys->info.pcm_samples;
298 pi64 = (int64_t*)va_arg( args, int64_t * );
299 *pi64 = I64C(1000000) * p_sys->i_position /
300 p_sys->info.sample_freq;
303 case DEMUX_SET_POSITION:
304 f = (double)va_arg( args, double );
305 i64 = (int64_t)(f * p_sys->info.pcm_samples);
306 if( mpc_decoder_seek_sample( &p_sys->decoder, i64 ) )
308 p_sys->i_position = i64;
314 i64 = (int64_t)va_arg( args, int64_t );
315 if( mpc_decoder_seek_sample( &p_sys->decoder, i64 ) )
317 p_sys->i_position = i64;
327 mpc_int32_t ReaderRead( void *p_private, void *dst, mpc_int32_t i_size )
329 demux_t *p_demux = (demux_t*)p_private;
330 return stream_Read( p_demux->s, dst, i_size );
333 mpc_bool_t ReaderSeek( void *p_private, mpc_int32_t i_offset )
335 demux_t *p_demux = (demux_t*)p_private;
336 return !stream_Seek( p_demux->s, i_offset );
339 mpc_int32_t ReaderTell( void *p_private)
341 demux_t *p_demux = (demux_t*)p_private;
342 return stream_Tell( p_demux->s );
345 mpc_int32_t ReaderGetSize( void *p_private )
347 demux_t *p_demux = (demux_t*)p_private;
348 return stream_Size( p_demux->s );
351 mpc_bool_t ReaderCanSeek( void *p_private )
353 demux_t *p_demux = (demux_t*)p_private;
354 vlc_bool_t b_canseek;
356 stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_canseek );