modules/demux/mpc.c

   1 /*****************************************************************************
   2  * mpc.c : MPC stream input module for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2001 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Laurent Aimar <fenrir@via.ecp.fr.com>
   8  *
   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.
  13  *
  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.
  18  *
  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  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #ifdef HAVE_CONFIG_H
  28 # include "config.h"
  29 #endif
  30
  31 #define VLC_MODULE_LICENSE VLC_LICENSE_GPL_2_PLUS
  32 #include <vlc_common.h>
  33 #include <vlc_plugin.h>
  34 #include <vlc_demux.h>
  35 #include <vlc_input.h>
  36 #include <vlc_codec.h>
  37 #include <math.h>
  38
  39 #ifdef HAVE_MPC_MPCDEC_H
  40 #include <mpc/mpcdec.h>
  41 #else
  42 #include <mpcdec/mpcdec.h>
  43 #endif
  44
  45 /* TODO:
  46  *  - test stream version 4..6
  47  *  - test fixed float version
  48  *  - ...
  49  *
  50  *  XXX:
  51  *  It is done the ugly way (the demux does the decode stage... but it works
  52  */
  53
  54 /*****************************************************************************
  55  * Module descriptor
  56  *****************************************************************************/
  57 static int  Open  ( vlc_object_t * );
  58 static void Close ( vlc_object_t * );
  59
  60 vlc_module_begin ()
  61     set_category( CAT_INPUT )
  62     set_subcategory( SUBCAT_INPUT_DEMUX )
  63     set_description( N_("MusePack demuxer") )
  64     set_capability( "demux", 145 )
  65
  66     set_callbacks( Open, Close )
  67     add_shortcut( "mpc" )
  68 vlc_module_end ()
  69
  70 /*****************************************************************************
  71  * Local prototypes
  72  *****************************************************************************/
  73 static int Demux  ( demux_t * );
  74 static int Control( demux_t *, int, va_list );
  75
  76 typedef struct
  77 {
  78     /* */
  79     es_out_id_t   *p_es;
  80
  81     /* */
  82 #ifndef HAVE_MPC_MPCDEC_H
  83     mpc_decoder    decoder;
  84 #else
  85     mpc_demux     *decoder;
  86 #endif
  87     mpc_reader     reader;
  88     mpc_streaminfo info;
  89
  90     /* */
  91     int64_t        i_position;
  92 } demux_sys_t;
  93
  94 #ifndef HAVE_MPC_MPCDEC_H
  95 static mpc_int32_t ReaderRead( void *p_private, void *dst, mpc_int32_t i_size );
  96 static mpc_bool_t  ReaderSeek( void *p_private, mpc_int32_t i_offset );
  97 static mpc_int32_t ReaderTell( void *p_private);
  98 static mpc_int32_t ReaderGetSize( void *p_private );
  99 static mpc_bool_t  ReaderCanSeek( void *p_private );
 100 #else
 101 static mpc_int32_t ReaderRead( mpc_reader *p_private, void *dst, mpc_int32_t i_size );
 102 static mpc_bool_t  ReaderSeek( mpc_reader *p_private, mpc_int32_t i_offset );
 103 static mpc_int32_t ReaderTell( mpc_reader *p_private);
 104 static mpc_int32_t ReaderGetSize( mpc_reader *p_private );
 105 static mpc_bool_t  ReaderCanSeek( mpc_reader *p_private );
 106 #endif
 107
 108 /*****************************************************************************
 109  * Open: initializes ES structures
 110  *****************************************************************************/
 111 static int Open( vlc_object_t * p_this )
 112 {
 113     demux_t     *p_demux = (demux_t*)p_this;
 114     demux_sys_t *p_sys;
 115     es_format_t fmt;
 116     const uint8_t *p_peek;
 117
 118     if( vlc_stream_Peek( p_demux->s, &p_peek, 4 ) < 4 )
 119         return VLC_EGENERIC;
 120
 121     if( memcmp( p_peek, "MP+", 3 )
 122 #ifdef HAVE_MPC_MPCDEC_H
 123         /* SV8 format */
 124         && memcmp( p_peek, "MPCK", 4 )
 125 #endif
 126       )
 127     {
 128         /* for v4..6 we check extension file */
 129         const int i_version = (GetDWLE( p_peek ) >> 11)&0x3ff;
 130         if( i_version  < 4 || i_version > 6 )
 131             return VLC_EGENERIC;
 132
 133         if( !p_demux->obj.force )
 134         {
 135             /* Check file name extension */
 136             if( !demux_IsPathExtension( p_demux, ".mpc" ) &&
 137                 !demux_IsPathExtension( p_demux, ".mp+" ) &&
 138                 !demux_IsPathExtension( p_demux, ".mpp" ) )
 139                 return VLC_EGENERIC;
 140         }
 141     }
 142
 143     /* */
 144     p_sys = calloc( 1, sizeof( *p_sys ) );
 145     if( !p_sys )
 146         return VLC_ENOMEM;
 147
 148     p_sys->i_position = 0;
 149
 150     p_sys->reader.read = ReaderRead;
 151     p_sys->reader.seek = ReaderSeek;
 152     p_sys->reader.tell = ReaderTell;
 153     p_sys->reader.get_size = ReaderGetSize;
 154     p_sys->reader.canseek = ReaderCanSeek;
 155     p_sys->reader.data = p_demux;
 156
 157 #ifndef HAVE_MPC_MPCDEC_H
 158     /* Load info */
 159     mpc_streaminfo_init( &p_sys->info );
 160     if( mpc_streaminfo_read( &p_sys->info, &p_sys->reader ) != ERROR_CODE_OK )
 161         goto error;
 162
 163     /* */
 164     mpc_decoder_setup( &p_sys->decoder, &p_sys->reader );
 165     if( !mpc_decoder_initialize( &p_sys->decoder, &p_sys->info ) )
 166         goto error;
 167 #else
 168     p_sys->decoder = mpc_demux_init( &p_sys->reader );
 169     if( !p_sys->decoder )
 170         goto error;
 171
 172     mpc_demux_get_info( p_sys->decoder, &p_sys->info );
 173 #endif
 174
 175     /* Fill p_demux fields */
 176     p_demux->pf_demux = Demux;
 177     p_demux->pf_control = Control;
 178     p_demux->p_sys = p_sys;
 179
 180     /* */
 181 #ifndef MPC_FIXED_POINT
 182     es_format_Init( &fmt, AUDIO_ES, VLC_CODEC_FL32 );
 183 #else
 184 #   ifdef WORDS_BIGENDIAN
 185     es_format_Init( &fmt, AUDIO_ES, VLC_CODEC_S32B );
 186 #   else
 187     es_format_Init( &fmt, AUDIO_ES, VLC_CODEC_S32L );
 188 #   endif
 189 #endif
 190     fmt.audio.i_channels = p_sys->info.channels;
 191     fmt.audio.i_rate = p_sys->info.sample_freq;
 192     fmt.audio.i_blockalign = 4*fmt.audio.i_channels;
 193     fmt.audio.i_bitspersample = 32;
 194     fmt.i_bitrate = fmt.i_bitrate * fmt.audio.i_channels *
 195                     fmt.audio.i_bitspersample;
 196
 197 #ifdef HAVE_MPC_MPCDEC_H
 198 #   define CONVERT_PEAK( mpc_peak ) (pow( 10, (mpc_peak) / 256.0 / 20.0 ) / 32767.0)
 199 #   define CONVERT_GAIN( mpc_gain ) (MPC_OLD_GAIN_REF - (mpc_gain) / 256.0)
 200 #else
 201 #   define CONVERT_PEAK( mpc_peak ) ((mpc_peak) / 32767.0)
 202 #   define CONVERT_GAIN( mpc_gain ) ((mpc_gain) / 100.0)
 203 #endif
 204
 205     if( p_sys->info.peak_title > 0 )
 206     {
 207         fmt.audio_replay_gain.pb_peak[AUDIO_REPLAY_GAIN_TRACK] = true;
 208         fmt.audio_replay_gain.pf_peak[AUDIO_REPLAY_GAIN_TRACK] = (float) CONVERT_PEAK( p_sys->info.peak_title );
 209         fmt.audio_replay_gain.pb_gain[AUDIO_REPLAY_GAIN_TRACK] = true;
 210         fmt.audio_replay_gain.pf_gain[AUDIO_REPLAY_GAIN_TRACK] = (float) CONVERT_GAIN( p_sys->info.gain_title );
 211     }
 212     if( p_sys->info.peak_album > 0 )
 213     {
 214         fmt.audio_replay_gain.pb_peak[AUDIO_REPLAY_GAIN_ALBUM] = true;
 215         fmt.audio_replay_gain.pf_peak[AUDIO_REPLAY_GAIN_ALBUM] = (float) CONVERT_PEAK( p_sys->info.peak_album );
 216         fmt.audio_replay_gain.pb_gain[AUDIO_REPLAY_GAIN_ALBUM] = true;
 217         fmt.audio_replay_gain.pf_gain[AUDIO_REPLAY_GAIN_ALBUM] = (float) CONVERT_GAIN( p_sys->info.gain_album );
 218     }
 219
 220 #undef CONVERT_GAIN
 221 #undef CONVERT_PEAK
 222
 223     p_sys->p_es = es_out_Add( p_demux->out, &fmt );
 224     if( !p_sys->p_es )
 225         goto error;
 226
 227     return VLC_SUCCESS;
 228
 229 error:
 230     free( p_sys );
 231     return VLC_EGENERIC;
 232 }
 233
 234 /*****************************************************************************
 235  * Close: frees unused data
 236  *****************************************************************************/
 237 static void Close( vlc_object_t * p_this )
 238 {
 239     demux_t        *p_demux = (demux_t*)p_this;
 240     demux_sys_t    *p_sys = p_demux->p_sys;
 241
 242 #ifdef HAVE_MPC_MPCDEC_H
 243     if( p_sys->decoder )
 244     mpc_demux_exit( p_sys->decoder );
 245 #endif
 246     free( p_sys );
 247 }
 248
 249 /*****************************************************************************
 250  * Demux:
 251  *****************************************************************************
 252  * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
 253  *****************************************************************************/
 254 static int Demux( demux_t *p_demux )
 255 {
 256     demux_sys_t *p_sys = p_demux->p_sys;
 257     block_t     *p_data;
 258     int i_ret;
 259 #ifdef HAVE_MPC_MPCDEC_H
 260     mpc_frame_info frame;
 261     mpc_status err;
 262 #endif
 263     p_data = block_Alloc( MPC_DECODER_BUFFER_LENGTH*sizeof(MPC_SAMPLE_FORMAT) );
 264     if( !p_data )
 265         return VLC_DEMUXER_EGENERIC;
 266
 267 #ifndef HAVE_MPC_MPCDEC_H
 268     i_ret = mpc_decoder_decode( &p_sys->decoder,
 269                                 (MPC_SAMPLE_FORMAT*)p_data->p_buffer,
 270                                 NULL, NULL );
 271     if( i_ret <= 0 )
 272     {
 273         block_Release( p_data );
 274         return i_ret < 0 ? VLC_DEMUXER_EGENERIC : VLC_DEMUXER_EOF;
 275     }
 276 #else
 277     frame.buffer = (MPC_SAMPLE_FORMAT*)p_data->p_buffer;
 278     err = mpc_demux_decode( p_sys->decoder, &frame );
 279     if( err != MPC_STATUS_OK )
 280     {
 281         block_Release( p_data );
 282         return VLC_DEMUXER_EGENERIC;
 283     }
 284     else if( frame.bits == -1 )
 285     {
 286         block_Release( p_data );
 287         return VLC_DEMUXER_EOF;
 288     }
 289
 290     i_ret = frame.samples;
 291 #endif
 292
 293     /* */
 294     p_data->i_buffer = i_ret * sizeof(MPC_SAMPLE_FORMAT) * p_sys->info.channels;
 295     p_data->i_dts = p_data->i_pts =
 296             VLC_TICK_0 + CLOCK_FREQ * p_sys->i_position / p_sys->info.sample_freq;
 297
 298     es_out_SetPCR( p_demux->out, p_data->i_dts );
 299
 300     es_out_Send( p_demux->out, p_sys->p_es, p_data );
 301
 302     /* */
 303     p_sys->i_position += i_ret;
 304
 305     return VLC_DEMUXER_SUCCESS;
 306 }
 307
 308 /*****************************************************************************
 309  * Control:
 310  *****************************************************************************/
 311 static int Control( demux_t *p_demux, int i_query, va_list args )
 312 {
 313     demux_sys_t *p_sys = p_demux->p_sys;
 314     double   f, *pf;
 315     int64_t i64, *pi64;
 316     bool *pb_bool;
 317
 318     switch( i_query )
 319     {
 320         case DEMUX_CAN_SEEK:
 321             return vlc_stream_vaControl( p_demux->s, i_query, args );
 322
 323         case DEMUX_HAS_UNSUPPORTED_META:
 324             pb_bool = va_arg( args, bool* );
 325             *pb_bool = true;
 326             return VLC_SUCCESS;
 327
 328         case DEMUX_GET_LENGTH:
 329             pi64 = va_arg( args, int64_t * );
 330 #ifndef HAVE_MPC_MPCDEC_H
 331             *pi64 = CLOCK_FREQ * p_sys->info.pcm_samples /
 332                         p_sys->info.sample_freq;
 333 #else
 334             *pi64 = CLOCK_FREQ * (p_sys->info.samples -
 335                                         p_sys->info.beg_silence) /
 336                 p_sys->info.sample_freq;
 337 #endif
 338             return VLC_SUCCESS;
 339
 340         case DEMUX_GET_POSITION:
 341             pf = va_arg( args, double * );
 342 #ifndef HAVE_MPC_MPCDEC_H
 343             if( p_sys->info.pcm_samples > 0 )
 344                 *pf = (double) p_sys->i_position /
 345                       (double)p_sys->info.pcm_samples;
 346 #else
 347             if( p_sys->info.samples - p_sys->info.beg_silence > 0)
 348                 *pf = (double) p_sys->i_position /
 349                       (double)(p_sys->info.samples - p_sys->info.beg_silence);
 350 #endif
 351             else
 352                 *pf = 0.0;
 353             return VLC_SUCCESS;
 354
 355         case DEMUX_GET_TIME:
 356             pi64 = va_arg( args, int64_t * );
 357             *pi64 = CLOCK_FREQ * p_sys->i_position /
 358                         p_sys->info.sample_freq;
 359             return VLC_SUCCESS;
 360
 361         case DEMUX_SET_POSITION:
 362             f = va_arg( args, double );
 363 #ifndef HAVE_MPC_MPCDEC_H
 364             i64 = (int64_t)(f * p_sys->info.pcm_samples);
 365             if( mpc_decoder_seek_sample( &p_sys->decoder, i64 ) )
 366 #else
 367             i64 = (int64_t)(f * (p_sys->info.samples -
 368                                  p_sys->info.beg_silence));
 369             if( mpc_demux_seek_sample( p_sys->decoder, i64 ) == MPC_STATUS_OK )
 370 #endif
 371             {
 372                 p_sys->i_position = i64;
 373                 return VLC_SUCCESS;
 374             }
 375             return VLC_EGENERIC;
 376
 377         case DEMUX_SET_TIME:
 378             i64 = va_arg( args, int64_t );
 379 #ifndef HAVE_MPC_MPCDEC_H
 380             if( mpc_decoder_seek_sample( &p_sys->decoder, i64 ) )
 381 #else
 382              if( mpc_demux_seek_sample( p_sys->decoder, i64 ) == MPC_STATUS_OK )
 383 #endif
 384             {
 385                 p_sys->i_position = i64;
 386                 return VLC_SUCCESS;
 387             }
 388             return VLC_EGENERIC;
 389
 390         case DEMUX_CAN_PAUSE:
 391         case DEMUX_SET_PAUSE_STATE:
 392         case DEMUX_CAN_CONTROL_PACE:
 393         case DEMUX_GET_PTS_DELAY:
 394             return demux_vaControlHelper( p_demux->s, 0, -1, 0, 1, i_query, args );
 395
 396         default:
 397             return VLC_EGENERIC;
 398     }
 399 }
 400
 401 #ifndef HAVE_MPC_MPCDEC_H
 402 static mpc_int32_t ReaderRead( void *p_private, void *dst, mpc_int32_t i_size )
 403 {
 404     demux_t *p_demux = (demux_t*)p_private;
 405 #else
 406 static mpc_int32_t ReaderRead( mpc_reader *p_private, void *dst, mpc_int32_t i_size )
 407 {
 408     demux_t *p_demux = (demux_t*)p_private->data;
 409 #endif
 410     return vlc_stream_Read( p_demux->s, dst, i_size );
 411 }
 412
 413 #ifndef HAVE_MPC_MPCDEC_H
 414 static mpc_bool_t ReaderSeek( void *p_private, mpc_int32_t i_offset )
 415 {
 416     demux_t *p_demux = (demux_t*)p_private;
 417 #else
 418 static mpc_bool_t ReaderSeek( mpc_reader *p_private, mpc_int32_t i_offset )
 419 {
 420     demux_t *p_demux = (demux_t*)p_private->data;
 421 #endif
 422     return !vlc_stream_Seek( p_demux->s, i_offset );
 423 }
 424
 425 #ifndef HAVE_MPC_MPCDEC_H
 426 static mpc_int32_t ReaderTell( void *p_private)
 427 {
 428     demux_t *p_demux = (demux_t*)p_private;
 429 #else
 430 static mpc_int32_t ReaderTell( mpc_reader *p_private)
 431 {
 432     demux_t *p_demux = (demux_t*)p_private->data;
 433 #endif
 434     return vlc_stream_Tell( p_demux->s );
 435 }
 436
 437 #ifndef HAVE_MPC_MPCDEC_H
 438 static mpc_int32_t ReaderGetSize( void *p_private )
 439 {
 440     demux_t *p_demux = (demux_t*)p_private;
 441 #else
 442 static mpc_int32_t ReaderGetSize( mpc_reader *p_private )
 443 {
 444     demux_t *p_demux = (demux_t*)p_private->data;
 445 #endif
 446     return stream_Size( p_demux->s );
 447 }
 448
 449 #ifndef HAVE_MPC_MPCDEC_H
 450 static mpc_bool_t ReaderCanSeek( void *p_private )
 451 {
 452     demux_t *p_demux = (demux_t*)p_private;
 453 #else
 454 static mpc_bool_t ReaderCanSeek( mpc_reader *p_private )
 455 {
 456     demux_t *p_demux = (demux_t*)p_private->data;
 457 #endif
 458     bool b_canseek;
 459
 460     vlc_stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_canseek );
 461     return b_canseek;
 462 }
 463