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 #include <vlc_common.h>
  32 #include <vlc_plugin.h>
  33 #include <vlc_demux.h>
  34 #include <vlc_input.h>
  35 #include <vlc_codec.h>
  36 #include <math.h>
  37
  38 #ifdef HAVE_MPC_MPCDEC_H
  39 #include <mpc/mpcdec.h>
  40 #else
  41 #include <mpcdec/mpcdec.h>
  42 #endif
  43
  44 /* TODO:
  45  *  - test stream version 4..6
  46  *  - test fixed float version
  47  *  - ...
  48  *
  49  *  XXX:
  50  *  It is done the ugly way (the demux does the decode stage... but it works
  51  */
  52
  53 /*****************************************************************************
  54  * Module descriptor
  55  *****************************************************************************/
  56 static int  Open  ( vlc_object_t * );
  57 static void Close ( vlc_object_t * );
  58
  59 vlc_module_begin ()
  60     set_category( CAT_INPUT )
  61     set_subcategory( SUBCAT_INPUT_DEMUX )
  62     set_description( N_("MusePack demuxer") )
  63     set_capability( "demux", 145 )
  64
  65     set_callbacks( Open, Close )
  66     add_shortcut( "mpc" )
  67 vlc_module_end ()
  68
  69 /*****************************************************************************
  70  * Local prototypes
  71  *****************************************************************************/
  72 static int Demux  ( demux_t * );
  73 static int Control( demux_t *, int, va_list );
  74
  75 struct demux_sys_t
  76 {
  77     /* */
  78     es_out_id_t   *p_es;
  79
  80     /* */
  81 #ifndef HAVE_MPC_MPCDEC_H
  82     mpc_decoder    decoder;
  83 #else
  84     mpc_demux     *decoder;
  85 #endif
  86     mpc_reader     reader;
  87     mpc_streaminfo info;
  88
  89     /* */
  90     int64_t        i_position;
  91 };
  92
  93 #ifndef HAVE_MPC_MPCDEC_H
  94 static mpc_int32_t ReaderRead( void *p_private, void *dst, mpc_int32_t i_size );
  95 static mpc_bool_t  ReaderSeek( void *p_private, mpc_int32_t i_offset );
  96 static mpc_int32_t ReaderTell( void *p_private);
  97 static mpc_int32_t ReaderGetSize( void *p_private );
  98 static mpc_bool_t  ReaderCanSeek( void *p_private );
  99 #else
 100 static mpc_int32_t ReaderRead( mpc_reader *p_private, void *dst, mpc_int32_t i_size );
 101 static mpc_bool_t  ReaderSeek( mpc_reader *p_private, mpc_int32_t i_offset );
 102 static mpc_int32_t ReaderTell( mpc_reader *p_private);
 103 static mpc_int32_t ReaderGetSize( mpc_reader *p_private );
 104 static mpc_bool_t  ReaderCanSeek( mpc_reader *p_private );
 105 #endif
 106
 107 /*****************************************************************************
 108  * Open: initializes ES structures
 109  *****************************************************************************/
 110 static int Open( vlc_object_t * p_this )
 111 {
 112     demux_t     *p_demux = (demux_t*)p_this;
 113     demux_sys_t *p_sys;
 114     es_format_t fmt;
 115     const uint8_t *p_peek;
 116
 117     if( stream_Peek( p_demux->s, &p_peek, 4 ) < 4 )
 118         return VLC_EGENERIC;
 119
 120     if( memcmp( p_peek, "MP+", 3 )
 121 #ifdef HAVE_MPC_MPCDEC_H
 122         /* SV8 format */
 123         && memcmp( p_peek, "MPCK", 4 )
 124 #endif
 125       )
 126     {
 127         /* for v4..6 we check extension file */
 128         const int i_version = (GetDWLE( p_peek ) >> 11)&0x3ff;
 129         if( i_version  < 4 || i_version > 6 )
 130             return VLC_EGENERIC;
 131
 132         if( !p_demux->b_force )
 133         {
 134             /* Check file name extension */
 135             if( !demux_IsPathExtension( p_demux, ".mpc" ) &&
 136                 !demux_IsPathExtension( p_demux, ".mp+" ) &&
 137                 !demux_IsPathExtension( p_demux, ".mpp" ) )
 138                 return VLC_EGENERIC;
 139         }
 140     }
 141
 142     /* */
 143     p_sys = calloc( 1, sizeof( *p_sys ) );
 144     if( !p_sys )
 145         return VLC_ENOMEM;
 146
 147     p_sys->i_position = 0;
 148
 149     p_sys->reader.read = ReaderRead;
 150     p_sys->reader.seek = ReaderSeek;
 151     p_sys->reader.tell = ReaderTell;
 152     p_sys->reader.get_size = ReaderGetSize;
 153     p_sys->reader.canseek = ReaderCanSeek;
 154     p_sys->reader.data = p_demux;
 155
 156 #ifndef HAVE_MPC_MPCDEC_H
 157     /* Load info */
 158     mpc_streaminfo_init( &p_sys->info );
 159     if( mpc_streaminfo_read( &p_sys->info, &p_sys->reader ) != ERROR_CODE_OK )
 160         goto error;
 161
 162     /* */
 163     mpc_decoder_setup( &p_sys->decoder, &p_sys->reader );
 164     if( !mpc_decoder_initialize( &p_sys->decoder, &p_sys->info ) )
 165         goto error;
 166 #else
 167     p_sys->decoder = mpc_demux_init( &p_sys->reader );
 168     if( !p_sys->decoder )
 169         goto error;
 170
 171     mpc_demux_get_info( p_sys->decoder, &p_sys->info );
 172 #endif
 173
 174     /* Fill p_demux fields */
 175     p_demux->pf_demux = Demux;
 176     p_demux->pf_control = Control;
 177     p_demux->p_sys = p_sys;
 178
 179     /* */
 180 #ifndef MPC_FIXED_POINT
 181     es_format_Init( &fmt, AUDIO_ES, VLC_CODEC_FL32 );
 182 #else
 183 #   ifdef WORDS_BIGENDIAN
 184     es_format_Init( &fmt, AUDIO_ES, VLC_CODEC_S32B );
 185 #   else
 186     es_format_Init( &fmt, AUDIO_ES, VLC_CODEC_S32L );
 187 #   endif
 188 #endif
 189     fmt.audio.i_channels = p_sys->info.channels;
 190     fmt.audio.i_rate = p_sys->info.sample_freq;
 191     fmt.audio.i_blockalign = 4*fmt.audio.i_channels;
 192     fmt.audio.i_bitspersample = 32;
 193     fmt.i_bitrate = fmt.i_bitrate * fmt.audio.i_channels *
 194                     fmt.audio.i_bitspersample;
 195     if( p_sys->info.peak_title > 0 )
 196     {
 197         fmt.audio_replay_gain.pb_peak[AUDIO_REPLAY_GAIN_TRACK] = true;
 198         fmt.audio_replay_gain.pf_peak[AUDIO_REPLAY_GAIN_TRACK] = (float)p_sys->info.peak_title / 32767.0;
 199         fmt.audio_replay_gain.pb_gain[AUDIO_REPLAY_GAIN_TRACK] = true;
 200         fmt.audio_replay_gain.pf_gain[AUDIO_REPLAY_GAIN_TRACK] = (float)p_sys->info.gain_title / 100.0;
 201     }
 202     if( p_sys->info.peak_album > 0 )
 203     {
 204         fmt.audio_replay_gain.pb_peak[AUDIO_REPLAY_GAIN_ALBUM] = true;
 205         fmt.audio_replay_gain.pf_peak[AUDIO_REPLAY_GAIN_ALBUM] = (float)p_sys->info.peak_album / 32767.0;
 206         fmt.audio_replay_gain.pb_gain[AUDIO_REPLAY_GAIN_ALBUM] = true;
 207         fmt.audio_replay_gain.pf_gain[AUDIO_REPLAY_GAIN_ALBUM] = (float)p_sys->info.gain_album / 100.0;
 208     }
 209
 210     p_sys->p_es = es_out_Add( p_demux->out, &fmt );
 211     if( !p_sys->p_es )
 212         goto error;
 213
 214     return VLC_SUCCESS;
 215
 216 error:
 217     free( p_sys );
 218     return VLC_EGENERIC;
 219 }
 220
 221 /*****************************************************************************
 222  * Close: frees unused data
 223  *****************************************************************************/
 224 static void Close( vlc_object_t * p_this )
 225 {
 226     demux_t        *p_demux = (demux_t*)p_this;
 227     demux_sys_t    *p_sys = p_demux->p_sys;
 228
 229 #ifdef HAVE_MPC_MPCDEC_H
 230     if( p_sys->decoder )
 231     mpc_demux_exit( p_sys->decoder );
 232 #endif
 233     free( p_sys );
 234 }
 235
 236 /*****************************************************************************
 237  * Demux:
 238  *****************************************************************************
 239  * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
 240  *****************************************************************************/
 241 static int Demux( demux_t *p_demux )
 242 {
 243     demux_sys_t *p_sys = p_demux->p_sys;
 244     block_t     *p_data;
 245     int i_ret;
 246 #ifdef HAVE_MPC_MPCDEC_H
 247     mpc_frame_info frame;
 248     mpc_status err;
 249 #endif
 250     p_data = block_New( p_demux,
 251                         MPC_DECODER_BUFFER_LENGTH*sizeof(MPC_SAMPLE_FORMAT) );
 252     if( !p_data )
 253         return -1;
 254
 255 #ifndef HAVE_MPC_MPCDEC_H
 256     i_ret = mpc_decoder_decode( &p_sys->decoder,
 257                                 (MPC_SAMPLE_FORMAT*)p_data->p_buffer,
 258                                 NULL, NULL );
 259     if( i_ret <= 0 )
 260     {
 261         block_Release( p_data );
 262         return i_ret < 0 ? -1 : 0;
 263     }
 264 #else
 265     frame.buffer = (MPC_SAMPLE_FORMAT*)p_data->p_buffer;
 266     err = mpc_demux_decode( p_sys->decoder, &frame );
 267     if( err != MPC_STATUS_OK )
 268     {
 269         block_Release( p_data );
 270         return -1;
 271     }
 272     else if( frame.bits == -1 )
 273     {
 274         block_Release( p_data );
 275         return 0;
 276     }
 277
 278     i_ret = frame.samples;
 279 #endif
 280
 281     /* */
 282     p_data->i_buffer = i_ret * sizeof(MPC_SAMPLE_FORMAT) * p_sys->info.channels;
 283     p_data->i_dts = p_data->i_pts =
 284             VLC_TS_0 + INT64_C(1000000) * p_sys->i_position / p_sys->info.sample_freq;
 285
 286     es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_data->i_dts );
 287
 288     es_out_Send( p_demux->out, p_sys->p_es, p_data );
 289
 290     /* */
 291     p_sys->i_position += i_ret;
 292
 293     return 1;
 294 }
 295
 296 /*****************************************************************************
 297  * Control:
 298  *****************************************************************************/
 299 static int Control( demux_t *p_demux, int i_query, va_list args )
 300 {
 301     demux_sys_t *p_sys = p_demux->p_sys;
 302     double   f, *pf;
 303     int64_t i64, *pi64;
 304     bool *pb_bool;
 305
 306     switch( i_query )
 307     {
 308         case DEMUX_HAS_UNSUPPORTED_META:
 309             pb_bool = (bool*)va_arg( args, bool* );
 310             *pb_bool = true;
 311             return VLC_SUCCESS;
 312
 313         case DEMUX_GET_LENGTH:
 314             pi64 = (int64_t*)va_arg( args, int64_t * );
 315 #ifndef HAVE_MPC_MPCDEC_H
 316             *pi64 = INT64_C(1000000) * p_sys->info.pcm_samples /
 317                         p_sys->info.sample_freq;
 318 #else
 319             *pi64 = INT64_C(1000000) * (p_sys->info.samples -
 320                                         p_sys->info.beg_silence) /
 321                 p_sys->info.sample_freq;
 322 #endif
 323             return VLC_SUCCESS;
 324
 325         case DEMUX_GET_POSITION:
 326             pf = (double*)va_arg( args, double * );
 327 #ifndef HAVE_MPC_MPCDEC_H
 328             if( p_sys->info.pcm_samples > 0 )
 329                 *pf = (double) p_sys->i_position /
 330                       (double)p_sys->info.pcm_samples;
 331 #else
 332             if( p_sys->info.samples - p_sys->info.beg_silence > 0)
 333                 *pf = (double) p_sys->i_position /
 334                       (double)(p_sys->info.samples - p_sys->info.beg_silence);
 335 #endif
 336             else
 337                 *pf = 0.0;
 338             return VLC_SUCCESS;
 339
 340         case DEMUX_GET_TIME:
 341             pi64 = (int64_t*)va_arg( args, int64_t * );
 342             *pi64 = INT64_C(1000000) * p_sys->i_position /
 343                         p_sys->info.sample_freq;
 344             return VLC_SUCCESS;
 345
 346         case DEMUX_SET_POSITION:
 347             f = (double)va_arg( args, double );
 348 #ifndef HAVE_MPC_MPCDEC_H
 349             i64 = (int64_t)(f * p_sys->info.pcm_samples);
 350             if( mpc_decoder_seek_sample( &p_sys->decoder, i64 ) )
 351 #else
 352             i64 = (int64_t)(f * (p_sys->info.samples -
 353                                  p_sys->info.beg_silence));
 354             if( mpc_demux_seek_sample( p_sys->decoder, i64 ) == MPC_STATUS_OK )
 355 #endif
 356             {
 357                 p_sys->i_position = i64;
 358                 return VLC_SUCCESS;
 359             }
 360             return VLC_EGENERIC;
 361
 362         case DEMUX_SET_TIME:
 363             i64 = (int64_t)va_arg( args, int64_t );
 364 #ifndef HAVE_MPC_MPCDEC_H
 365             if( mpc_decoder_seek_sample( &p_sys->decoder, i64 ) )
 366 #else
 367              if( mpc_demux_seek_sample( p_sys->decoder, i64 ) == MPC_STATUS_OK )
 368 #endif
 369             {
 370                 p_sys->i_position = i64;
 371                 return VLC_SUCCESS;
 372             }
 373             return VLC_EGENERIC;
 374
 375         default:
 376             return VLC_EGENERIC;
 377     }
 378 }
 379
 380 #ifndef HAVE_MPC_MPCDEC_H
 381 static mpc_int32_t ReaderRead( void *p_private, void *dst, mpc_int32_t i_size )
 382 {
 383     demux_t *p_demux = (demux_t*)p_private;
 384 #else
 385 static mpc_int32_t ReaderRead( mpc_reader *p_private, void *dst, mpc_int32_t i_size )
 386 {
 387     demux_t *p_demux = (demux_t*)p_private->data;
 388 #endif
 389     return stream_Read( p_demux->s, dst, i_size );
 390 }
 391
 392 #ifndef HAVE_MPC_MPCDEC_H
 393 static mpc_bool_t ReaderSeek( void *p_private, mpc_int32_t i_offset )
 394 {
 395     demux_t *p_demux = (demux_t*)p_private;
 396 #else
 397 static mpc_bool_t ReaderSeek( mpc_reader *p_private, mpc_int32_t i_offset )
 398 {
 399     demux_t *p_demux = (demux_t*)p_private->data;
 400 #endif
 401     return !stream_Seek( p_demux->s, i_offset );
 402 }
 403
 404 #ifndef HAVE_MPC_MPCDEC_H
 405 static mpc_int32_t ReaderTell( void *p_private)
 406 {
 407     demux_t *p_demux = (demux_t*)p_private;
 408 #else
 409 static mpc_int32_t ReaderTell( mpc_reader *p_private)
 410 {
 411     demux_t *p_demux = (demux_t*)p_private->data;
 412 #endif
 413     return stream_Tell( p_demux->s );
 414 }
 415
 416 #ifndef HAVE_MPC_MPCDEC_H
 417 static mpc_int32_t ReaderGetSize( void *p_private )
 418 {
 419     demux_t *p_demux = (demux_t*)p_private;
 420 #else
 421 static mpc_int32_t ReaderGetSize( mpc_reader *p_private )
 422 {
 423     demux_t *p_demux = (demux_t*)p_private->data;
 424 #endif
 425     return stream_Size( p_demux->s );
 426 }
 427
 428 #ifndef HAVE_MPC_MPCDEC_H
 429 static mpc_bool_t ReaderCanSeek( void *p_private )
 430 {
 431     demux_t *p_demux = (demux_t*)p_private;
 432 #else
 433 static mpc_bool_t ReaderCanSeek( mpc_reader *p_private )
 434 {
 435     demux_t *p_demux = (demux_t*)p_private->data;
 436 #endif
 437     bool b_canseek;
 438
 439     stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_canseek );
 440     return b_canseek;
 441 }
 442