1 /*****************************************************************************
2 * gme.cpp: Game Music files demuxer (using Game_Music_Emu)
3 *****************************************************************************
4 * Copyright (C) 2006 the VideoLAN team
7 * Authors: Jean Sreng <fox@videolan.org>
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 *****************************************************************************/
27 #include <stdlib.h> /* malloc(), free() */
43 /*****************************************************************************
45 *****************************************************************************/
46 static int Open ( vlc_object_t * );
47 static void Close ( vlc_object_t * );
50 set_shortname( "GME");
51 set_description( _("GME demuxer (Game_Music_Emu)" ) );
52 set_capability( "demux2", 10 );
53 set_category( CAT_INPUT );
54 set_subcategory( SUBCAT_INPUT_DEMUX );
55 set_callbacks( Open, Close );
56 add_shortcut( "gme" );
59 /*****************************************************************************
61 *****************************************************************************/
72 static const char* type_str[] =
74 "NSF (Nes)", "GBS (Gameboy)", "VGM (Master System/Game Gear/Genesis)", "SPC (Super Nes)", "GYM (Genesis)"
89 Music_Emu *p_musicemu;
90 Emu_Mem_Reader *p_reader;
94 static int Demux ( demux_t *p_demux );
95 static int Control( demux_t *p_demux, int i_query, va_list args );
98 static void inflate_gzbuf(uint8_t * p_buffer, size_t i_size, uint8_t ** pp_obuffer, size_t * pi_osize);
101 static const char* gme_ext[] =
103 "nsf", "nsfe", "gbs", "vgm", "vgz", "spc", "gym", NULL
106 /*****************************************************************************
108 *****************************************************************************/
109 static int Open( vlc_object_t *p_this )
111 demux_t *p_demux = (demux_t*)p_this;
117 /* We accept file based on extention match */
118 if( strcasecmp( p_demux->psz_demux, "gme" ) )
120 if( ( ext = strrchr( p_demux->psz_path, '.' ) ) == NULL ||
121 stream_Size( p_demux->s ) == 0 ) return VLC_EGENERIC;
124 for( i = 0; gme_ext[i] != NULL; i++ )
126 if( !strcasecmp( ext, gme_ext[i] ) )
131 if( gme_ext[i] == NULL ) return VLC_EGENERIC;
132 msg_Dbg( p_demux, "running GME demuxer (ext=%s)", gme_ext[i] );
136 if (i == 4) /* gzipped vgm */
138 msg_Dbg( p_demux, "zlib unvailable, unable to read gzipped vgz file" );
143 /* Fill p_demux field */
144 p_demux->pf_demux = Demux;
145 p_demux->pf_control = Control;
146 p_demux->p_sys = p_sys = (demux_sys_t *)malloc( sizeof( demux_sys_t ) );
148 msg_Dbg( p_demux, "loading complete file (could be long)" );
149 p_sys->i_data = stream_Size( p_demux->s );
150 p_sys->p_data = (uint8_t *)malloc( p_sys->i_data );
151 p_sys->i_data = stream_Read( p_demux->s, p_sys->p_data, p_sys->i_data );
152 if( p_sys->i_data <= 0 )
154 msg_Err( p_demux, "failed to read the complete file" );
155 free( p_sys->p_data );
160 /* Prepare emulator */
163 if (i == 4) /* gzipped vgm */
165 uint8_t * p_outbuffer;
168 inflate_gzbuf( p_sys->p_data, p_sys->i_data, &p_outbuffer, &i_outsize );
170 if (p_outbuffer == NULL)
172 msg_Err( p_demux, "failed to understand the file : unable to inflate vgz file" );
173 /* we try to seek to recover for other plugin */
174 stream_Seek( p_demux->s, 0 );
175 free( p_sys->p_data );
182 p_sys->p_data = p_outbuffer;
183 p_sys->i_data = i_outsize;
187 p_sys->p_reader = new Emu_Mem_Reader( p_sys->p_data, p_sys->i_data );
193 p_sys->i_type = EMU_NSF;
196 p_sys->i_type = EMU_GBS;
200 p_sys->i_type = EMU_VGM;
203 p_sys->i_type = EMU_SPC;
206 p_sys->i_type = EMU_GYM;
210 /* Emulator specific initialization */
212 #define INIT_EMU(type) \
213 type##_Emu::header_t header; \
214 type##_Emu * p_emu = new type##_Emu; \
215 p_emu->init( 44100 ); \
216 p_sys->p_musicemu = p_emu; \
217 p_sys->p_reader->read( &header, sizeof(header) ); \
218 p_error = p_emu->load( header, *(p_sys->p_reader) );
220 p_sys->p_meta = vlc_meta_New();
224 /// \todo Reinstate meta codec name
225 //SET_META( VLC_META_CODEC_NAME, type_str[p_sys->i_type])
227 const char * p_error;
229 switch(p_sys->i_type)
236 vlc_meta_SetTitle( p_meta, header.game );
237 vlc_meta_SetArtist( p_meta, header.author );
238 vlc_meta_SetCopyright( p_meta, header.copyright );
239 p_sys->i_tracks = p_emu->track_count();
248 vlc_meta_SetTitle( p_meta, header.game );
249 vlc_meta_SetArtist( p_meta, header.author );
250 vlc_meta_SetCopyright( p_meta, header.copyright );
251 p_sys->i_tracks = p_emu->track_count();
260 p_sys->i_tracks = p_emu->track_count();
269 snprintf( psz_temp, 511, "%s (%s)", header.song, header.game );
270 vlc_meta_SetTitle( p_meta, psz_temp );
271 vlc_meta_SetArtist( p_meta, header.author );
272 p_sys->i_tracks = p_emu->track_count();
281 snprintf( psz_temp, 511, "%s (%s)", header.song, header.game );
282 vlc_meta_SetTitle( p_meta, psz_temp );
283 vlc_meta_SetCopyright( p_meta, header.copyright );
284 p_sys->i_tracks = p_emu->track_count();
290 if( p_error != NULL )
292 msg_Err( p_demux, "failed to understand the file : %s", p_error );
293 /* we try to seek to recover for other plugin */
294 stream_Seek( p_demux->s, 0 );
295 free( p_sys->p_data );
302 p_sys->i_length = 314 * (int64_t)1000;
304 msg_Dbg( p_demux, "GME loaded type=%s title=%s tracks=%i", type_str[p_sys->i_type],
305 vlc_meta_GetValue( p_sys->p_meta, VLC_META_TITLE ), p_sys->i_tracks );
307 p_sys->p_musicemu->start_track( 0 );
309 #ifdef WORDS_BIGENDIAN
310 es_format_Init( &p_sys->fmt, AUDIO_ES, VLC_FOURCC( 't', 'w', 'o', 's' ) );
312 es_format_Init( &p_sys->fmt, AUDIO_ES, VLC_FOURCC( 'a', 'r', 'a', 'w' ) );
314 p_sys->fmt.audio.i_rate = 44100;
315 p_sys->fmt.audio.i_channels = 2;
316 p_sys->fmt.audio.i_bitspersample = 16;
317 p_sys->es = es_out_Add( p_demux->out, &p_sys->fmt );
322 /*****************************************************************************
324 *****************************************************************************/
325 static void Close( vlc_object_t *p_this )
327 demux_t *p_demux = (demux_t*)p_this;
328 demux_sys_t *p_sys = p_demux->p_sys;
330 delete p_sys->p_musicemu;
331 delete p_sys->p_reader;
333 free( p_sys->p_data );
338 /*****************************************************************************
340 *****************************************************************************/
341 static int Demux( demux_t *p_demux )
343 demux_sys_t *p_sys = p_demux->p_sys;
345 int i_bk = ( p_sys->fmt.audio.i_bitspersample / 8 ) *
346 p_sys->fmt.audio.i_channels;
347 const unsigned int i_buf = p_sys->fmt.audio.i_rate / 10 * i_bk;
348 const unsigned int i_emubuf = i_buf / sizeof(Music_Emu::sample_t);
349 const char * p_error;
350 Music_Emu::sample_t p_emubuf [i_emubuf];
352 p_frame = block_New( p_demux, i_buf );
354 p_sys->p_musicemu->play( i_emubuf, p_emubuf );
357 if( p_error != NULL )
359 msg_Dbg( p_demux, "stop playing : %s", p_error );
360 block_Release( p_frame );
365 /* Copy emulator output to frame */
366 for (int i = 0; i<i_buf; i++) p_frame->p_buffer[i] = ((uint8_t *)p_emubuf)[i];
369 es_out_Control( p_demux->out, ES_OUT_SET_PCR, (int64_t)p_sys->i_time );
371 /* We should use p_frame->i_buffer */
372 p_sys->i_time += (int64_t)1000000 * p_frame->i_buffer / i_bk / p_sys->fmt.audio.i_rate;
375 p_frame->i_dts = p_frame->i_pts = p_sys->i_time;
376 es_out_Send( p_demux->out, p_sys->es, p_frame );
381 /*****************************************************************************
383 *****************************************************************************/
384 static int Control( demux_t *p_demux, int i_query, va_list args )
386 demux_sys_t *p_sys = p_demux->p_sys;
390 vlc_meta_t **pp_meta;
395 pp_meta = (vlc_meta_t **)va_arg( args, vlc_meta_t** );
397 *pp_meta = vlc_meta_Duplicate( p_sys->p_meta );
402 case DEMUX_GET_POSITION:
403 pf = (double*) va_arg( args, double* );
404 if( p_sys->i_length > 0 )
406 *pf = (double)p_sys->i_time / (double)p_sys->i_length;
411 case DEMUX_SET_POSITION:
412 f = (double) va_arg( args, double );
414 i64 = f * p_sys->i_length;
415 if( i64 >= 0 && i64 <= p_sys->i_length )
417 ModPlug_Seek( p_sys->f, i64 / 1000 );
418 p_sys->i_time = i64 + 1;
419 es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
426 pi64 = (int64_t*)va_arg( args, int64_t * );
427 *pi64 = p_sys->i_time;
430 case DEMUX_GET_LENGTH:
431 pi64 = (int64_t*)va_arg( args, int64_t * );
432 *pi64 = p_sys->i_length;
436 i64 = (int64_t)va_arg( args, int64_t );
438 if( i64 >= 0 && i64 <= p_sys->i_length )
440 ModPlug_Seek( p_sys->f, i64 / 1000 );
441 p_sys->i_time = i64 + 1;
442 es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
448 case DEMUX_GET_TITLE_INFO:
449 if( p_sys->i_tracks > 1 )
451 input_title_t ***ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
452 int *pi_int = (int*)va_arg( args, int* );
454 *pi_int = p_sys->i_tracks;
455 *ppp_title = (input_title_t**)malloc( sizeof( input_title_t**) * p_sys->i_tracks );
457 for( int i = 0; i < p_sys->i_tracks; i++ )
460 snprintf(psz_temp, 15, "Track %i", i);
461 (*ppp_title)[i] = vlc_input_title_New();
462 (*ppp_title)[i]->psz_name = strdup(psz_temp);
470 case DEMUX_SET_TITLE:
471 i_idx = (int)va_arg( args, int );
472 p_sys->p_musicemu->start_track( i_idx );
473 p_demux->info.i_title = i_idx;
474 p_demux->info.i_update = INPUT_UPDATE_TITLE;
475 msg_Dbg( p_demux, "set title %i", i_idx);
478 case DEMUX_GET_FPS: /* meaningless */
486 static void inflate_gzbuf(uint8_t * p_buffer, size_t i_size, uint8_t ** pp_obuffer, size_t * pi_osize)
490 size_t offset, out_size;
491 uint8_t * out_buffer;
493 (*pp_obuffer) = NULL;
496 memset(&z_str, 0, sizeof(z_str));
498 out_size = i_size * 2;
499 out_buffer = (uint8_t*)malloc(out_size);
501 z_str.next_in = (unsigned char*)p_buffer;
502 z_str.avail_in = i_size;
503 z_str.next_out = out_buffer;
504 z_str.avail_out = out_size;
506 if ((err = inflateInit2(&z_str, 31)) != Z_OK) /* gzip format */
512 while ((err = inflate(&z_str, Z_FINISH)) != Z_STREAM_END)
519 offset = z_str.next_out - out_buffer;
521 out_buffer = (uint8_t *)realloc(out_buffer, out_size);
522 z_str.next_out = out_buffer + offset;
523 z_str.avail_out = out_size - offset;
532 (*pi_osize) = out_size - z_str.avail_out;
536 out_buffer = (uint8_t *)realloc(out_buffer, *pi_osize);
537 (*pp_obuffer) = out_buffer;