mod.c
资源名称:vlc-1.0.5.zip [点击查看]
上传用户:kjfoods
上传日期:2020-07-06
资源大小:29949k
文件大小:20k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * mod.c: MOD file demuxer (using libmodplug)
- *****************************************************************************
- * Copyright (C) 2004-2009 the VideoLAN team
- * $Id: 745e2673c326014ba357692a814028e1e9c7106f $
- *
- * Authors: Laurent Aimar <fenrir@via.ecp.fr>
- * Konstanty Bialkowski <konstanty@ieee.org>
- *
- * 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
- #include <vlc_common.h>
- #include <vlc_plugin.h>
- #include <vlc_demux.h>
- #include <vlc_meta.h>
- #include <assert.h>
- #include <libmodplug/modplug.h>
- /* TODO:
- * - extend demux control to query meta data (demuxer should NEVER touch
- * playlist itself)
- * - FIXME test endian of samples
- * - ...
- */
- /*****************************************************************************
- * Module descriptor
- *****************************************************************************/
- static int Open ( vlc_object_t * );
- static void Close ( vlc_object_t * );
- #define NOISE_LONGTEXT N_("Enable noise reduction algorithm.")
- #define REVERB_LONGTEXT N_("Enable reverberation" )
- #define REVERB_LEVEL_LONGTEXT N_( "Reverberation level (from 0 "
- "to 100, default value is 0)." )
- #define REVERB_DELAY_LONGTEXT N_("Reverberation delay, in ms."
- " Usual values are from to 40 to 200ms." )
- #define MEGABASS_LONGTEXT N_( "Enable megabass mode" )
- #define MEGABASS_LEVEL_LONGTEXT N_("Megabass mode level (from 0 to 100, "
- "default value is 0)." )
- #define MEGABASS_RANGE_LONGTEXT N_("Megabass mode cutoff frequency, in Hz. "
- "This is the maximum frequency for which the megabass "
- "effect applies. Valid values are from 10 to 100 Hz." )
- #define SURROUND_LEVEL_LONGTEXT N_( "Surround effect level (from 0 to 100, "
- "default value is 0)." )
- #define SURROUND_DELAY_LONGTEXT N_("Surround delay, in ms. Usual values are "
- "from 5 to 40 ms." )
- vlc_module_begin ()
- set_shortname( "MOD")
- set_description( N_("MOD demuxer (libmodplug)" ) )
- set_capability( "demux", 10 )
- set_category( CAT_INPUT )
- set_subcategory( SUBCAT_INPUT_DEMUX )
- add_bool( "mod-noisereduction", true, NULL, N_("Noise reduction"),
- NOISE_LONGTEXT, false )
- add_bool( "mod-reverb", false, NULL, N_("Reverb"),
- REVERB_LONGTEXT, false )
- add_integer_with_range( "mod-reverb-level", 0, 0, 100, NULL,
- N_("Reverberation level"), REVERB_LEVEL_LONGTEXT, true )
- add_integer_with_range( "mod-reverb-delay", 40, 0, 1000, NULL,
- N_("Reverberation delay"), REVERB_DELAY_LONGTEXT, true )
- add_bool( "mod-megabass", false, NULL, N_("Mega bass"),
- MEGABASS_LONGTEXT, false )
- add_integer_with_range( "mod-megabass-level", 0, 0, 100, NULL,
- N_("Mega bass level"), MEGABASS_LEVEL_LONGTEXT, true )
- add_integer_with_range( "mod-megabass-range", 10, 10, 100, NULL,
- N_("Mega bass cutoff"), MEGABASS_RANGE_LONGTEXT, true )
- add_bool( "mod-surround", false, NULL, N_("Surround"), N_("Surround"),
- false )
- add_integer_with_range( "mod-surround-level", 0, 0, 100, NULL,
- N_("Surround level"), SURROUND_LEVEL_LONGTEXT, true )
- add_integer_with_range( "mod-surround-delay", 5, 0, 1000, NULL,
- N_("Surround delay (ms)"), SURROUND_DELAY_LONGTEXT, true )
- set_callbacks( Open, Close )
- add_shortcut( "mod" )
- vlc_module_end ()
- /*****************************************************************************
- * Local prototypes
- *****************************************************************************/
- struct demux_sys_t
- {
- es_format_t fmt;
- es_out_id_t *es;
- date_t pts;
- int64_t i_length;
- int i_data;
- uint8_t *p_data;
- ModPlugFile *f;
- };
- static int Demux ( demux_t *p_demux );
- static int Control( demux_t *p_demux, int i_query, va_list args );
- static int Validate( demux_t *p_demux, const char *psz_ext );
- static const char *ppsz_mod_ext[] =
- {
- "mod", "s3m", "xm", "it", "669", "amf", "ams", "dbm", "dmf", "dsm",
- "far", "mdl", "med", "mtm", "okt", "ptm", "stm", "ult", "umx", "mt2",
- "psm", "abc", NULL
- };
- /* We load the complete file in memory, put a higher bound
- * of 500 Mo (which is really big anyway) */
- #define MOD_MAX_FILE_SIZE (500*1000*1000)
- /*****************************************************************************
- * Open
- *****************************************************************************/
- static int Open( vlc_object_t *p_this )
- {
- demux_t *p_demux = (demux_t*)p_this;
- demux_sys_t *p_sys;
- ModPlug_Settings settings;
- /* We accept file based on extension match */
- if( !p_demux->b_force )
- {
- const char *psz_ext = strrchr( p_demux->psz_path, '.' );
- int i;
- if( !psz_ext )
- return VLC_EGENERIC;
- psz_ext++; /* skip . */
- for( i = 0; ppsz_mod_ext[i] != NULL; i++ )
- {
- if( !strcasecmp( psz_ext, ppsz_mod_ext[i] ) )
- break;
- }
- if( ppsz_mod_ext[i] == NULL )
- return VLC_EGENERIC;
- if( Validate( p_demux, ppsz_mod_ext[i] ) )
- {
- msg_Warn( p_demux, "MOD validation failed (ext=%s)", ppsz_mod_ext[i]);
- return VLC_EGENERIC;
- }
- msg_Dbg( p_demux, "running MOD demuxer (ext=%s)", ppsz_mod_ext[i] );
- }
- const int64_t i_size = stream_Size( p_demux->s );
- if( i_size <= 0 || i_size >= MOD_MAX_FILE_SIZE )
- return VLC_EGENERIC;
- /* Fill p_demux field */
- p_demux->pf_demux = Demux;
- p_demux->pf_control = Control;
- p_demux->p_sys = p_sys = malloc( sizeof( *p_sys ) );
- if( !p_sys )
- return VLC_ENOMEM;
- msg_Dbg( p_demux, "loading complete file (could be long)" );
- p_sys->i_data = i_size;
- p_sys->p_data = malloc( p_sys->i_data );
- if( p_sys->p_data )
- p_sys->i_data = stream_Read( p_demux->s, p_sys->p_data, p_sys->i_data );
- if( p_sys->i_data <= 0 || !p_sys->p_data )
- {
- msg_Err( p_demux, "failed to read the complete file" );
- free( p_sys->p_data );
- free( p_sys );
- return VLC_EGENERIC;
- }
- /* Configure modplug before loading the file */
- ModPlug_GetSettings( &settings );
- settings.mFlags = MODPLUG_ENABLE_OVERSAMPLING;
- settings.mChannels = 2;
- settings.mBits = 16;
- settings.mFrequency = 44100;
- settings.mResamplingMode = MODPLUG_RESAMPLE_FIR;
- if( var_CreateGetBool( p_demux, "mod-noisereduction" ) )
- settings.mFlags |= MODPLUG_ENABLE_NOISE_REDUCTION;
- if( var_CreateGetBool( p_demux, "mod-reverb" ) )
- settings.mFlags |= MODPLUG_ENABLE_REVERB;
- settings.mReverbDepth = var_CreateGetInteger( p_demux, "mod-reverb-level" );
- settings.mReverbDelay = var_CreateGetInteger( p_demux, "mod-reverb-delay" );
- if( var_CreateGetBool( p_demux, "mod-megabass" ) )
- settings.mFlags |= MODPLUG_ENABLE_MEGABASS;
- settings.mBassAmount = var_CreateGetInteger( p_demux, "mod-megabass-level" );
- settings.mBassRange = var_CreateGetInteger( p_demux, "mod-megabass-range" );
- if( var_CreateGetBool( p_demux, "mod-surround" ) )
- settings.mFlags |= MODPLUG_ENABLE_SURROUND;
- settings.mSurroundDepth = var_CreateGetInteger( p_demux, "mod-surround-level" );
- settings.mSurroundDelay = var_CreateGetInteger( p_demux, "mod-surround-delay" );
- ModPlug_SetSettings( &settings );
- if( ( p_sys->f = ModPlug_Load( p_sys->p_data, p_sys->i_data ) ) == NULL )
- {
- msg_Err( p_demux, "failed to understand the file" );
- /* we try to seek to recover for other plugin */
- stream_Seek( p_demux->s, 0 );
- free( p_sys->p_data );
- free( p_sys );
- return VLC_EGENERIC;
- }
- /* init time */
- date_Init( &p_sys->pts, settings.mFrequency, 1 );
- date_Set( &p_sys->pts, 1 );
- p_sys->i_length = ModPlug_GetLength( p_sys->f ) * INT64_C(1000);
- msg_Dbg( p_demux, "MOD loaded name=%s lenght=%"PRId64"ms",
- ModPlug_GetName( p_sys->f ),
- p_sys->i_length );
- #ifdef WORDS_BIGENDIAN
- es_format_Init( &p_sys->fmt, AUDIO_ES, VLC_FOURCC( 't', 'w', 'o', 's' ) );
- #else
- es_format_Init( &p_sys->fmt, AUDIO_ES, VLC_FOURCC( 'a', 'r', 'a', 'w' ) );
- #endif
- p_sys->fmt.audio.i_rate = settings.mFrequency;
- p_sys->fmt.audio.i_channels = settings.mChannels;
- p_sys->fmt.audio.i_bitspersample = settings.mBits;
- p_sys->es = es_out_Add( p_demux->out, &p_sys->fmt );
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * Close
- *****************************************************************************/
- 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;
- ModPlug_Unload( p_sys->f );
- free( p_sys->p_data );
- free( p_sys );
- }
- /*****************************************************************************
- * Demux:
- *****************************************************************************/
- static int Demux( demux_t *p_demux )
- {
- demux_sys_t *p_sys = p_demux->p_sys;
- block_t *p_frame;
- const int i_bk = ( p_sys->fmt.audio.i_bitspersample / 8 ) *
- p_sys->fmt.audio.i_channels;
- p_frame = block_New( p_demux, p_sys->fmt.audio.i_rate / 10 * i_bk );
- if( !p_frame )
- return -1;
- const int i_read = ModPlug_Read( p_sys->f, p_frame->p_buffer, p_frame->i_buffer );
- if( i_read <= 0 )
- {
- /* EOF */
- block_Release( p_frame );
- return 0;
- }
- p_frame->i_buffer = i_read;
- p_frame->i_dts =
- p_frame->i_pts = date_Increment( &p_sys->pts, p_frame->i_buffer / i_bk );
- /* Set PCR */
- es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_frame->i_pts );
- /* Send data */
- es_out_Send( p_demux->out, p_sys->es, p_frame );
- 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;
- switch( i_query )
- {
- case DEMUX_GET_POSITION:
- pf = (double*) va_arg( args, double* );
- if( p_sys->i_length > 0 )
- {
- *pf = (double)date_Get( &p_sys->pts ) / (double)p_sys->i_length;
- return VLC_SUCCESS;
- }
- return VLC_EGENERIC;
- case DEMUX_SET_POSITION:
- f = (double) va_arg( args, double );
- i64 = f * p_sys->i_length;
- if( i64 >= 0 && i64 <= p_sys->i_length )
- {
- ModPlug_Seek( p_sys->f, i64 / 1000 );
- date_Set( &p_sys->pts, i64 + 1 );
- return VLC_SUCCESS;
- }
- return VLC_EGENERIC;
- case DEMUX_GET_TIME:
- pi64 = (int64_t*)va_arg( args, int64_t * );
- *pi64 = date_Get( &p_sys->pts );
- return VLC_SUCCESS;
- case DEMUX_GET_LENGTH:
- pi64 = (int64_t*)va_arg( args, int64_t * );
- *pi64 = p_sys->i_length;
- return VLC_SUCCESS;
- case DEMUX_SET_TIME:
- i64 = (int64_t)va_arg( args, int64_t );
- if( i64 >= 0 && i64 <= p_sys->i_length )
- {
- ModPlug_Seek( p_sys->f, i64 / 1000 );
- date_Set( &p_sys->pts, i64 + 1 );
- return VLC_SUCCESS;
- }
- return VLC_EGENERIC;
- case DEMUX_HAS_UNSUPPORTED_META:
- {
- bool *pb_bool = (bool*)va_arg( args, bool* );
- *pb_bool = false; /* FIXME I am not sure of this one */
- return VLC_SUCCESS;
- }
- case DEMUX_GET_META:
- {
- vlc_meta_t *p_meta = (vlc_meta_t *)va_arg( args, vlc_meta_t* );
- unsigned i_num_samples = ModPlug_NumSamples( p_sys->f ),
- i_num_instruments = ModPlug_NumInstruments( p_sys->f );
- unsigned i_num_patterns = ModPlug_NumPatterns( p_sys->f ),
- i_num_channels = ModPlug_NumChannels( p_sys->f );
- // unsigned modType = ModPlug_GetModuleType( p_sys->f );
- char psz_temp[2048]; /* 32 * 240 max, but only need start */
- char *psz_module_info, *psz_instrument_info;
- unsigned i_temp_index = 0;
- const char *psz_name = ModPlug_GetName( p_sys->f );
- if( psz_name && *psz_name )
- vlc_meta_SetTitle( p_meta, psz_name );
- /* Comment field from artist - not in every type of MOD */
- psz_name = ModPlug_GetMessage( p_sys->f );
- if( psz_name && *psz_name )
- vlc_meta_SetDescription( p_meta, psz_name );
- /* Instruments only in newer MODs - so don't show if 0 */
- if( asprintf( &psz_instrument_info, ", %i Instruments",
- i_num_instruments ) >= 0 )
- {
- if( asprintf( &psz_module_info,
- "%i Channels, %i Patternsn"
- "%i Samples%sn",
- i_num_channels, i_num_patterns, i_num_samples,
- ( i_num_instruments ? psz_instrument_info : "" ) ) >= 0 )
- {
- vlc_meta_AddExtra( p_meta, "Module Information",
- psz_module_info );
- free( psz_module_info );
- }
- free( psz_instrument_info );
- }
- /* Make list of instruments (XM, IT, etc) */
- if( i_num_instruments )
- {
- i_temp_index = 0;
- for( int i = 0; i < i_num_instruments && i_temp_index < sizeof(psz_temp); i++ )
- {
- char lBuffer[33];
- ModPlug_InstrumentName( p_sys->f, i, lBuffer );
- if ( !lBuffer[0] ) continue; // don't add empty fields.
- i_temp_index += snprintf( &psz_temp[i_temp_index], sizeof(psz_temp) - i_temp_index, "%sn", lBuffer );
- }
- vlc_meta_AddExtra( p_meta, "Instruments", psz_temp );
- }
- /* Make list of samples */
- for( int i = 0; i < i_num_samples && i_temp_index < sizeof(psz_temp); i++ )
- {
- char psz_buffer[33];
- ModPlug_SampleName( p_sys->f, i, psz_buffer );
- if ( !psz_buffer[0] ) continue; // don't add empty fields.
- i_temp_index += snprintf( &psz_temp[i_temp_index], sizeof(psz_temp) - i_temp_index, "%sn", psz_buffer );
- }
- vlc_meta_AddExtra( p_meta, "Samples", psz_temp );
- return VLC_SUCCESS;
- }
- case DEMUX_GET_FPS: /* meaningless */
- default:
- return VLC_EGENERIC;
- }
- }
- /*****************************************************************************
- * Validate: try to ensure it is really a mod file.
- * The tests are not robust enough to replace extension checks in the general
- * cases.
- * TODO: maybe it should return a score, which will be used to bypass the
- * extension checks when high enough.
- *****************************************************************************/
- static int Validate( demux_t *p_demux, const char *psz_ext )
- {
- static const struct
- {
- int i_offset;
- const char *psz_marker;
- } p_marker[] = {
- { 0, "ziRCONia" }, /* MMCMP files */
- { 0, "Extended Module" }, /* XM */
- { 44, "SCRM" }, /* S3M */
- { 0, "IMPM" }, /* IT */
- { 0, "MThd" }, /* MID */
- { 0, "GF1PATCH110" }, /* PAT */
- { 20, "!SCREAM!" }, /* STM */
- { 20, "!Scream!" }, /* STM */
- { 20, "BMOD2STM" }, /* STM */
- { 0, "MMD0" }, /* MED v0 */
- { 0, "MMD1" }, /* MED v1 */
- { 0, "MMD2" }, /* MED v2 */
- { 0, "MMD3" }, /* MED v3 */
- { 0, "MTM" }, /* MTM */
- { 0, "DMDL" }, /* MDL */
- { 0, "DBM0" }, /* DBM */
- { 0, "if" }, /* 669 */
- { 0, "JN" }, /* 669 */
- { 0, "FARxfe" }, /* FAR */
- { 0, "Extreme" }, /* AMS */
- { 0, "OKTASONGCMOD" }, /* OKT */
- { 44, "PTMF" }, /* PTM */
- { 0, "MAS_UTrack_V00" }, /* Ult */
- { 0, "DDMF" }, /* DMF */
- { 8, "DSMFSONG" }, /* DSM */
- { 0, "xc1x83x2ax9e" }, /* UMX */
- { 0, "ASYLUM Music Format V1.0" }, /* AMF Type 0 */
- { 0, "AMF" }, /* AMF */
- { 0, "PSMxfe" }, /* PSM */
- { 0, "PSM " }, /* PSM */
- { 0, "MT20" }, /* MT2 */
- { 1080, "M.K." }, /* MOD */
- { 1080, "M!K!" },
- { 1080, "M&K!" },
- { 1080, "N.T." },
- { 1080, "CD81" },
- { 1080, "OKTA" },
- { 1080, "16CN" },
- { 1080, "32CN" },
- { 1080, "FLT" },
- { 1080, "TDZ" },
- { 1081, "CHN" },
- { 1082, "CH" },
- { -1, NULL }
- };
- const uint8_t *p_peek;
- const int i_peek = stream_Peek( p_demux->s, &p_peek, 2048 );
- if( i_peek < 4 )
- return VLC_EGENERIC;
- for( int i = 0; p_marker[i].i_offset >= 0; i++ )
- {
- const char *psz_marker = p_marker[i].psz_marker;
- const int i_size = strlen( psz_marker );
- const int i_offset = p_marker[i].i_offset;
- if( i_peek < i_offset + i_size )
- continue;
- if( !memcmp( &p_peek[i_offset], psz_marker, i_size ) )
- return VLC_SUCCESS;
- }
- /* The only two format left untested are ABC and MOD(old version)
- * ant they are difficult to test :( */
- /* Check for ABC
- * TODO i_peek = 2048 is too big for such files */
- if( !strcasecmp( psz_ext, "abc" ) )
- {
- bool b_k = false;
- bool b_tx = false;
- for( int i = 0; i < i_peek-1; i++ )
- {
- b_k |= p_peek[i+0] == 'K' && p_peek[i+1] == ':';
- b_tx |= ( p_peek[i+0] == 'X' || p_peek[i+0] == 'T') && p_peek[i+1] == ':';
- }
- if( !b_k || !b_tx )
- return VLC_EGENERIC;
- return VLC_SUCCESS;
- }
- /* Check for MOD */
- if( !strcasecmp( psz_ext, "mod" ) && i_peek >= 20 + 15 * 30 )
- {
- /* Check that the name is correctly null padded */
- const uint8_t *p = memchr( p_peek, ' ', 20 );
- if( p )
- {
- for( ; p < &p_peek[20]; p++ )
- {
- if( *p )
- return VLC_EGENERIC;
- }
- }
- for( int i = 0; i < 15; i++ )
- {
- const uint8_t *p_sample = &p_peek[20 + i*30];
- /* Check correct null padding */
- const uint8_t *p = memchr( &p_sample[0], ' ', 22 );
- if( p )
- {
- for( ; p < &p_sample[22]; p++ )
- {
- if( *p )
- return VLC_EGENERIC;
- }
- }
- if( p_sample[25] > 64 ) /* Volume value */
- return VLC_EGENERIC;
- }
- return VLC_SUCCESS;
- }
- return VLC_EGENERIC;
- }