/***************************************************************************** * mpc.c : MPC stream input module for vlc ***************************************************************************** * Copyright (C) 2001 the VideoLAN team * $Id$ * * Authors: Laurent Aimar * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. *****************************************************************************/ /***************************************************************************** * Preamble *****************************************************************************/ #ifdef HAVE_CONFIG_H # include "config.h" #endif #define VLC_MODULE_LICENSE VLC_LICENSE_GPL_2_PLUS #include #include #include #include #include #include #ifdef HAVE_MPC_MPCDEC_H #include #else #include #endif /* TODO: * - test stream version 4..6 * - test fixed float version * - ... * * XXX: * It is done the ugly way (the demux does the decode stage... but it works */ /***************************************************************************** * Module descriptor *****************************************************************************/ static int Open ( vlc_object_t * ); static void Close ( vlc_object_t * ); vlc_module_begin () set_category( CAT_INPUT ) set_subcategory( SUBCAT_INPUT_DEMUX ) set_description( N_("MusePack demuxer") ) set_capability( "demux", 145 ) set_callbacks( Open, Close ) add_shortcut( "mpc" ) vlc_module_end () /***************************************************************************** * Local prototypes *****************************************************************************/ static int Demux ( demux_t * ); static int Control( demux_t *, int, va_list ); struct demux_sys_t { /* */ es_out_id_t *p_es; /* */ #ifndef HAVE_MPC_MPCDEC_H mpc_decoder decoder; #else mpc_demux *decoder; #endif mpc_reader reader; mpc_streaminfo info; /* */ int64_t i_position; }; #ifndef HAVE_MPC_MPCDEC_H static mpc_int32_t ReaderRead( void *p_private, void *dst, mpc_int32_t i_size ); static mpc_bool_t ReaderSeek( void *p_private, mpc_int32_t i_offset ); static mpc_int32_t ReaderTell( void *p_private); static mpc_int32_t ReaderGetSize( void *p_private ); static mpc_bool_t ReaderCanSeek( void *p_private ); #else static mpc_int32_t ReaderRead( mpc_reader *p_private, void *dst, mpc_int32_t i_size ); static mpc_bool_t ReaderSeek( mpc_reader *p_private, mpc_int32_t i_offset ); static mpc_int32_t ReaderTell( mpc_reader *p_private); static mpc_int32_t ReaderGetSize( mpc_reader *p_private ); static mpc_bool_t ReaderCanSeek( mpc_reader *p_private ); #endif /***************************************************************************** * Open: initializes ES structures *****************************************************************************/ static int Open( vlc_object_t * p_this ) { demux_t *p_demux = (demux_t*)p_this; demux_sys_t *p_sys; es_format_t fmt; const uint8_t *p_peek; if( vlc_stream_Peek( p_demux->s, &p_peek, 4 ) < 4 ) return VLC_EGENERIC; if( memcmp( p_peek, "MP+", 3 ) #ifdef HAVE_MPC_MPCDEC_H /* SV8 format */ && memcmp( p_peek, "MPCK", 4 ) #endif ) { /* for v4..6 we check extension file */ const int i_version = (GetDWLE( p_peek ) >> 11)&0x3ff; if( i_version < 4 || i_version > 6 ) return VLC_EGENERIC; if( !p_demux->obj.force ) { /* Check file name extension */ if( !demux_IsPathExtension( p_demux, ".mpc" ) && !demux_IsPathExtension( p_demux, ".mp+" ) && !demux_IsPathExtension( p_demux, ".mpp" ) ) return VLC_EGENERIC; } } /* */ p_sys = calloc( 1, sizeof( *p_sys ) ); if( !p_sys ) return VLC_ENOMEM; p_sys->i_position = 0; p_sys->reader.read = ReaderRead; p_sys->reader.seek = ReaderSeek; p_sys->reader.tell = ReaderTell; p_sys->reader.get_size = ReaderGetSize; p_sys->reader.canseek = ReaderCanSeek; p_sys->reader.data = p_demux; #ifndef HAVE_MPC_MPCDEC_H /* Load info */ mpc_streaminfo_init( &p_sys->info ); if( mpc_streaminfo_read( &p_sys->info, &p_sys->reader ) != ERROR_CODE_OK ) goto error; /* */ mpc_decoder_setup( &p_sys->decoder, &p_sys->reader ); if( !mpc_decoder_initialize( &p_sys->decoder, &p_sys->info ) ) goto error; #else p_sys->decoder = mpc_demux_init( &p_sys->reader ); if( !p_sys->decoder ) goto error; mpc_demux_get_info( p_sys->decoder, &p_sys->info ); #endif /* Fill p_demux fields */ p_demux->pf_demux = Demux; p_demux->pf_control = Control; p_demux->p_sys = p_sys; /* */ #ifndef MPC_FIXED_POINT es_format_Init( &fmt, AUDIO_ES, VLC_CODEC_FL32 ); #else # ifdef WORDS_BIGENDIAN es_format_Init( &fmt, AUDIO_ES, VLC_CODEC_S32B ); # else es_format_Init( &fmt, AUDIO_ES, VLC_CODEC_S32L ); # endif #endif fmt.audio.i_channels = p_sys->info.channels; fmt.audio.i_rate = p_sys->info.sample_freq; fmt.audio.i_blockalign = 4*fmt.audio.i_channels; fmt.audio.i_bitspersample = 32; fmt.i_bitrate = fmt.i_bitrate * fmt.audio.i_channels * fmt.audio.i_bitspersample; #ifdef HAVE_MPC_MPCDEC_H # define CONVERT_PEAK( mpc_peak ) (pow( 10, (mpc_peak) / 256.0 / 20.0 ) / 32767.0) # define CONVERT_GAIN( mpc_gain ) (MPC_OLD_GAIN_REF - (mpc_gain) / 256.0) #else # define CONVERT_PEAK( mpc_peak ) ((mpc_peak) / 32767.0) # define CONVERT_GAIN( mpc_gain ) ((mpc_gain) / 100.0) #endif if( p_sys->info.peak_title > 0 ) { fmt.audio_replay_gain.pb_peak[AUDIO_REPLAY_GAIN_TRACK] = true; fmt.audio_replay_gain.pf_peak[AUDIO_REPLAY_GAIN_TRACK] = (float) CONVERT_PEAK( p_sys->info.peak_title ); fmt.audio_replay_gain.pb_gain[AUDIO_REPLAY_GAIN_TRACK] = true; fmt.audio_replay_gain.pf_gain[AUDIO_REPLAY_GAIN_TRACK] = (float) CONVERT_GAIN( p_sys->info.gain_title ); } if( p_sys->info.peak_album > 0 ) { fmt.audio_replay_gain.pb_peak[AUDIO_REPLAY_GAIN_ALBUM] = true; fmt.audio_replay_gain.pf_peak[AUDIO_REPLAY_GAIN_ALBUM] = (float) CONVERT_PEAK( p_sys->info.peak_album ); fmt.audio_replay_gain.pb_gain[AUDIO_REPLAY_GAIN_ALBUM] = true; fmt.audio_replay_gain.pf_gain[AUDIO_REPLAY_GAIN_ALBUM] = (float) CONVERT_GAIN( p_sys->info.gain_album ); } #undef CONVERT_GAIN #undef CONVERT_PEAK p_sys->p_es = es_out_Add( p_demux->out, &fmt ); if( !p_sys->p_es ) goto error; return VLC_SUCCESS; error: free( p_sys ); return VLC_EGENERIC; } /***************************************************************************** * Close: frees unused data *****************************************************************************/ static void Close( vlc_object_t * p_this ) { demux_t *p_demux = (demux_t*)p_this; demux_sys_t *p_sys = p_demux->p_sys; #ifdef HAVE_MPC_MPCDEC_H if( p_sys->decoder ) mpc_demux_exit( p_sys->decoder ); #endif free( p_sys ); } /***************************************************************************** * Demux: ***************************************************************************** * Returns -1 in case of error, 0 in case of EOF, 1 otherwise *****************************************************************************/ static int Demux( demux_t *p_demux ) { demux_sys_t *p_sys = p_demux->p_sys; block_t *p_data; int i_ret; #ifdef HAVE_MPC_MPCDEC_H mpc_frame_info frame; mpc_status err; #endif p_data = block_Alloc( MPC_DECODER_BUFFER_LENGTH*sizeof(MPC_SAMPLE_FORMAT) ); if( !p_data ) return -1; #ifndef HAVE_MPC_MPCDEC_H i_ret = mpc_decoder_decode( &p_sys->decoder, (MPC_SAMPLE_FORMAT*)p_data->p_buffer, NULL, NULL ); if( i_ret <= 0 ) { block_Release( p_data ); return i_ret < 0 ? -1 : 0; } #else frame.buffer = (MPC_SAMPLE_FORMAT*)p_data->p_buffer; err = mpc_demux_decode( p_sys->decoder, &frame ); if( err != MPC_STATUS_OK ) { block_Release( p_data ); return -1; } else if( frame.bits == -1 ) { block_Release( p_data ); return 0; } i_ret = frame.samples; #endif /* */ p_data->i_buffer = i_ret * sizeof(MPC_SAMPLE_FORMAT) * p_sys->info.channels; p_data->i_dts = p_data->i_pts = VLC_TICK_0 + CLOCK_FREQ * p_sys->i_position / p_sys->info.sample_freq; es_out_SetPCR( p_demux->out, p_data->i_dts ); es_out_Send( p_demux->out, p_sys->p_es, p_data ); /* */ p_sys->i_position += i_ret; return 1; } /***************************************************************************** * Control: *****************************************************************************/ static int Control( demux_t *p_demux, int i_query, va_list args ) { demux_sys_t *p_sys = p_demux->p_sys; double f, *pf; int64_t i64, *pi64; bool *pb_bool; switch( i_query ) { case DEMUX_CAN_SEEK: return vlc_stream_vaControl( p_demux->s, i_query, args ); case DEMUX_HAS_UNSUPPORTED_META: pb_bool = va_arg( args, bool* ); *pb_bool = true; return VLC_SUCCESS; case DEMUX_GET_LENGTH: pi64 = va_arg( args, int64_t * ); #ifndef HAVE_MPC_MPCDEC_H *pi64 = CLOCK_FREQ * p_sys->info.pcm_samples / p_sys->info.sample_freq; #else *pi64 = CLOCK_FREQ * (p_sys->info.samples - p_sys->info.beg_silence) / p_sys->info.sample_freq; #endif return VLC_SUCCESS; case DEMUX_GET_POSITION: pf = va_arg( args, double * ); #ifndef HAVE_MPC_MPCDEC_H if( p_sys->info.pcm_samples > 0 ) *pf = (double) p_sys->i_position / (double)p_sys->info.pcm_samples; #else if( p_sys->info.samples - p_sys->info.beg_silence > 0) *pf = (double) p_sys->i_position / (double)(p_sys->info.samples - p_sys->info.beg_silence); #endif else *pf = 0.0; return VLC_SUCCESS; case DEMUX_GET_TIME: pi64 = va_arg( args, int64_t * ); *pi64 = CLOCK_FREQ * p_sys->i_position / p_sys->info.sample_freq; return VLC_SUCCESS; case DEMUX_SET_POSITION: f = va_arg( args, double ); #ifndef HAVE_MPC_MPCDEC_H i64 = (int64_t)(f * p_sys->info.pcm_samples); if( mpc_decoder_seek_sample( &p_sys->decoder, i64 ) ) #else i64 = (int64_t)(f * (p_sys->info.samples - p_sys->info.beg_silence)); if( mpc_demux_seek_sample( p_sys->decoder, i64 ) == MPC_STATUS_OK ) #endif { p_sys->i_position = i64; return VLC_SUCCESS; } return VLC_EGENERIC; case DEMUX_SET_TIME: i64 = va_arg( args, int64_t ); #ifndef HAVE_MPC_MPCDEC_H if( mpc_decoder_seek_sample( &p_sys->decoder, i64 ) ) #else if( mpc_demux_seek_sample( p_sys->decoder, i64 ) == MPC_STATUS_OK ) #endif { p_sys->i_position = i64; return VLC_SUCCESS; } return VLC_EGENERIC; default: return VLC_EGENERIC; } } #ifndef HAVE_MPC_MPCDEC_H static mpc_int32_t ReaderRead( void *p_private, void *dst, mpc_int32_t i_size ) { demux_t *p_demux = (demux_t*)p_private; #else static mpc_int32_t ReaderRead( mpc_reader *p_private, void *dst, mpc_int32_t i_size ) { demux_t *p_demux = (demux_t*)p_private->data; #endif return vlc_stream_Read( p_demux->s, dst, i_size ); } #ifndef HAVE_MPC_MPCDEC_H static mpc_bool_t ReaderSeek( void *p_private, mpc_int32_t i_offset ) { demux_t *p_demux = (demux_t*)p_private; #else static mpc_bool_t ReaderSeek( mpc_reader *p_private, mpc_int32_t i_offset ) { demux_t *p_demux = (demux_t*)p_private->data; #endif return !vlc_stream_Seek( p_demux->s, i_offset ); } #ifndef HAVE_MPC_MPCDEC_H static mpc_int32_t ReaderTell( void *p_private) { demux_t *p_demux = (demux_t*)p_private; #else static mpc_int32_t ReaderTell( mpc_reader *p_private) { demux_t *p_demux = (demux_t*)p_private->data; #endif return vlc_stream_Tell( p_demux->s ); } #ifndef HAVE_MPC_MPCDEC_H static mpc_int32_t ReaderGetSize( void *p_private ) { demux_t *p_demux = (demux_t*)p_private; #else static mpc_int32_t ReaderGetSize( mpc_reader *p_private ) { demux_t *p_demux = (demux_t*)p_private->data; #endif return stream_Size( p_demux->s ); } #ifndef HAVE_MPC_MPCDEC_H static mpc_bool_t ReaderCanSeek( void *p_private ) { demux_t *p_demux = (demux_t*)p_private; #else static mpc_bool_t ReaderCanSeek( mpc_reader *p_private ) { demux_t *p_demux = (demux_t*)p_private->data; #endif bool b_canseek; vlc_stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_canseek ); return b_canseek; }