--- /dev/null
+/*****************************************************************************
+ * gme.cpp: Game Music files demuxer (using Game_Music_Emu)
+ *****************************************************************************
+ * Copyright (C) 2006 the VideoLAN team
+ * $Id$
+ *
+ * Authors: Jean Sreng <fox@videolan.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
+ *****************************************************************************/
+#include <stdlib.h> /* malloc(), free() */
+
+#include <vlc/vlc.h>
+#include <vlc/input.h>
+
+#include "Nsf_Emu.h"
+#include "Gbs_Emu.h"
+#include "Vgm_Emu.h"
+#include "Spc_Emu.h"
+#include "Gym_Emu.h"
+
+#ifdef HAVE_ZLIB_H
+ #include "zlib.h"
+#endif
+
+using namespace std;
+
+/*****************************************************************************
+ * Module descriptor
+ *****************************************************************************/
+static int Open ( vlc_object_t * );
+static void Close ( vlc_object_t * );
+
+vlc_module_begin();
+ set_shortname( "GME");
+ set_description( _("GME demuxer (Game_Music_Emu)" ) );
+ set_capability( "demux2", 10 );
+ set_category( CAT_INPUT );
+ set_subcategory( SUBCAT_INPUT_DEMUX );
+ set_callbacks( Open, Close );
+ add_shortcut( "gme" );
+vlc_module_end();
+
+/*****************************************************************************
+ * Local prototypes
+ *****************************************************************************/
+
+enum EmuType_e
+{
+ EMU_NSF = 0,
+ EMU_GBS = 1,
+ EMU_VGM = 2,
+ EMU_SPC = 3,
+ EMU_GYM = 4
+};
+
+static const char* type_str[] =
+{
+ "NSF (Nes)", "GBS (Gameboy)", "VGM (Master System/Game Gear/Genesis)", "SPC (Super Nes)", "GYM (Genesis)"
+};
+
+struct demux_sys_t
+{
+ es_format_t fmt;
+ es_out_id_t *es;
+
+ int64_t i_time;
+ int64_t i_length;
+
+ int i_data;
+ uint8_t *p_data;
+ int i_type;
+ int i_tracks;
+ Music_Emu *p_musicemu;
+ Emu_Mem_Reader *p_reader;
+ vlc_meta_t *p_meta;
+};
+
+static int Demux ( demux_t *p_demux );
+static int Control( demux_t *p_demux, int i_query, va_list args );
+
+#ifdef HAVE_ZLIB_H
+static void inflate_gzbuf(uint8_t * p_buffer, size_t i_size, uint8_t ** pp_obuffer, size_t * pi_osize);
+#endif
+
+static const char* gme_ext[] =
+{
+ "nsf", "nsfe", "gbs", "vgm", "vgz", "spc", "gym", NULL
+};
+
+/*****************************************************************************
+ * Open
+ *****************************************************************************/
+static int Open( vlc_object_t *p_this )
+{
+ demux_t *p_demux = (demux_t*)p_this;
+ demux_sys_t *p_sys;
+ char *ext;
+ int i;
+ vlc_value_t val;
+
+ /* We accept file based on extention match */
+ if( strcasecmp( p_demux->psz_demux, "gme" ) )
+ {
+ if( ( ext = strrchr( p_demux->psz_path, '.' ) ) == NULL ||
+ stream_Size( p_demux->s ) == 0 ) return VLC_EGENERIC;
+
+ ext++; /* skip . */
+ for( i = 0; gme_ext[i] != NULL; i++ )
+ {
+ if( !strcasecmp( ext, gme_ext[i] ) )
+ {
+ break;
+ }
+ }
+ if( gme_ext[i] == NULL ) return VLC_EGENERIC;
+ msg_Dbg( p_demux, "running GME demuxer (ext=%s)", gme_ext[i] );
+ }
+
+#ifndef HAVE_ZLIB_H
+ if (i == 4) /* gzipped vgm */
+ {
+ msg_Dbg( p_demux, "zlib unvailable, unable to read gzipped vgz file" );
+ return VLC_EGENERIC;
+ }
+#endif
+
+ /* Fill p_demux field */
+ p_demux->pf_demux = Demux;
+ p_demux->pf_control = Control;
+ p_demux->p_sys = p_sys = (demux_sys_t *)malloc( sizeof( demux_sys_t ) );
+
+ msg_Dbg( p_demux, "loading complete file (could be long)" );
+ p_sys->i_data = stream_Size( p_demux->s );
+ p_sys->p_data = (uint8_t *)malloc( p_sys->i_data );
+ p_sys->i_data = stream_Read( p_demux->s, p_sys->p_data, p_sys->i_data );
+ if( p_sys->i_data <= 0 )
+ {
+ msg_Err( p_demux, "failed to read the complete file" );
+ free( p_sys->p_data );
+ free( p_sys );
+ return VLC_EGENERIC;
+ }
+
+ /* Prepare emulator */
+
+#ifdef HAVE_ZLIB_H
+ if (i == 4) /* gzipped vgm */
+ {
+ uint8_t * p_outbuffer;
+ size_t i_outsize;
+
+ inflate_gzbuf( p_sys->p_data, p_sys->i_data, &p_outbuffer, &i_outsize );
+
+ if (p_outbuffer == NULL)
+ {
+ msg_Err( p_demux, "failed to understand the file : unable to inflate vgz 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;
+ }
+
+ free(p_sys->p_data);
+
+ p_sys->p_data = p_outbuffer;
+ p_sys->i_data = i_outsize;
+ }
+#endif
+
+ p_sys->p_reader = new Emu_Mem_Reader( p_sys->p_data, p_sys->i_data );
+
+ switch(i)
+ {
+ case 0:
+ case 1:
+ p_sys->i_type = EMU_NSF;
+ break;
+ case 2:
+ p_sys->i_type = EMU_GBS;
+ break;
+ case 3:
+ case 4:
+ p_sys->i_type = EMU_VGM;
+ break;
+ case 5:
+ p_sys->i_type = EMU_SPC;
+ break;
+ case 6:
+ p_sys->i_type = EMU_GYM;
+ break;
+ }
+
+ /* Emulator specific initialization */
+
+#define INIT_EMU(type) \
+ type##_Emu::header_t header; \
+ type##_Emu * p_emu = new type##_Emu; \
+ p_emu->init( 44100 ); \
+ p_sys->p_musicemu = p_emu; \
+ p_sys->p_reader->read( &header, sizeof(header) ); \
+ p_error = p_emu->load( header, *(p_sys->p_reader) );
+
+ p_sys->p_meta = vlc_meta_New();
+
+ char psz_temp[512];
+#define SET_META(vlc_meta, meta_info...) \
+ snprintf( psz_temp, 511, meta_info ); \
+ vlc_meta_Add( p_sys->p_meta, vlc_meta, psz_temp );
+
+ SET_META( VLC_META_CODEC_NAME, type_str[p_sys->i_type])
+
+ const char * p_error;
+
+ switch(p_sys->i_type)
+ {
+ case EMU_NSF:
+ {
+ INIT_EMU(Nsf)
+ if (p_error == NULL)
+ {
+ SET_META( VLC_META_TITLE, "%s", header.game )
+ SET_META( VLC_META_AUTHOR, "%s", header.author )
+ SET_META( VLC_META_COPYRIGHT, "%s", header.copyright )
+ p_sys->i_tracks = p_emu->track_count();
+ }
+ }
+ break;
+ case EMU_GBS:
+ {
+ INIT_EMU(Gbs)
+ if (p_error == NULL)
+ {
+ SET_META( VLC_META_TITLE, "%s", header.game )
+ SET_META( VLC_META_AUTHOR, "%s", header.author )
+ SET_META( VLC_META_COPYRIGHT, "%s", header.copyright )
+ p_sys->i_tracks = p_emu->track_count();
+ }
+ }
+ break;
+ case EMU_VGM:
+ {
+ INIT_EMU(Vgm)
+ if (p_error == NULL)
+ {
+ p_sys->i_tracks = p_emu->track_count();
+ }
+ }
+ break;
+ case EMU_SPC:
+ {
+ INIT_EMU(Spc)
+ if (p_error == NULL)
+ {
+ SET_META( VLC_META_TITLE, "%s (%s)", header.song, header.game )
+ SET_META( VLC_META_AUTHOR, "%s", header.author )
+ p_sys->i_tracks = p_emu->track_count();
+ }
+ }
+ break;
+ case EMU_GYM:
+ {
+ INIT_EMU(Gym)
+ if (p_error == NULL)
+ {
+ SET_META( VLC_META_TITLE, "%s (%s)", header.song, header.game )
+ SET_META( VLC_META_COPYRIGHT, "%s", header.copyright )
+ p_sys->i_tracks = p_emu->track_count();
+ }
+ }
+ break;
+ }
+
+ if( p_error != NULL )
+ {
+ msg_Err( p_demux, "failed to understand the file : %s", p_error );
+ /* 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 */
+ p_sys->i_time = 1;
+ p_sys->i_length = 314 * (int64_t)1000;
+
+ msg_Dbg( p_demux, "GME loaded type=%s title=%s tracks=%i", type_str[p_sys->i_type],
+ vlc_meta_GetValue( p_sys->p_meta, VLC_META_TITLE ), p_sys->i_tracks );
+
+ p_sys->p_musicemu->start_track( 0 );
+
+#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 = 44100;
+ p_sys->fmt.audio.i_channels = 2;
+ p_sys->fmt.audio.i_bitspersample = 16;
+ 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;
+
+ delete p_sys->p_musicemu;
+ delete p_sys->p_reader;
+
+ 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;
+ int i_bk = ( p_sys->fmt.audio.i_bitspersample / 8 ) *
+ p_sys->fmt.audio.i_channels;
+ const unsigned int i_buf = p_sys->fmt.audio.i_rate / 10 * i_bk;
+ const unsigned int i_emubuf = i_buf / sizeof(Music_Emu::sample_t);
+ const char * p_error;
+ Music_Emu::sample_t p_emubuf [i_emubuf];
+
+ p_frame = block_New( p_demux, i_buf );
+
+ p_sys->p_musicemu->play( i_emubuf, p_emubuf );
+
+ /*
+ if( p_error != NULL )
+ {
+ msg_Dbg( p_demux, "stop playing : %s", p_error );
+ block_Release( p_frame );
+ return 0;
+ }
+ */
+
+ /* Copy emulator output to frame */
+ for (int i = 0; i<i_buf; i++) p_frame->p_buffer[i] = ((uint8_t *)p_emubuf)[i];
+
+ /* Set PCR */
+ es_out_Control( p_demux->out, ES_OUT_SET_PCR, (int64_t)p_sys->i_time );
+
+ /* We should use p_frame->i_buffer */
+ p_sys->i_time += (int64_t)1000000 * p_frame->i_buffer / i_bk / p_sys->fmt.audio.i_rate;
+
+ /* Send data */
+ p_frame->i_dts = p_frame->i_pts = p_sys->i_time;
+ 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;
+ int i_idx;
+ vlc_meta_t **pp_meta;
+
+switch( i_query )
+ {
+ case DEMUX_GET_META:
+ pp_meta = (vlc_meta_t **)va_arg( args, vlc_meta_t** );
+ if( p_sys->p_meta )
+ *pp_meta = vlc_meta_Duplicate( p_sys->p_meta );
+ else
+ *pp_meta = NULL;
+ return VLC_SUCCESS;
+
+ case DEMUX_GET_POSITION:
+ pf = (double*) va_arg( args, double* );
+ if( p_sys->i_length > 0 )
+ {
+ *pf = (double)p_sys->i_time / (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 );
+ p_sys->i_time = i64 + 1;
+ es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
+
+ return VLC_SUCCESS;
+ }
+ return VLC_EGENERIC;
+*/
+ case DEMUX_GET_TIME:
+ pi64 = (int64_t*)va_arg( args, int64_t * );
+ *pi64 = p_sys->i_time;
+ 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 );
+ p_sys->i_time = i64 + 1;
+ es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
+
+ return VLC_SUCCESS;
+ }
+ return VLC_EGENERIC;
+*/
+ case DEMUX_GET_TITLE_INFO:
+ if( p_sys->i_tracks > 1 )
+ {
+ input_title_t ***ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
+ int *pi_int = (int*)va_arg( args, int* );
+
+ *pi_int = p_sys->i_tracks;
+ *ppp_title = (input_title_t**)malloc( sizeof( input_title_t**) * p_sys->i_tracks );
+
+ for( int i = 0; i < p_sys->i_tracks; i++ )
+ {
+ char psz_temp[16];
+ snprintf(psz_temp, 15, "Track %i", i);
+ (*ppp_title)[i] = vlc_input_title_New();
+ (*ppp_title)[i]->psz_name = strdup(psz_temp);
+ }
+
+ return VLC_SUCCESS;
+ }
+ return VLC_EGENERIC;
+
+
+ case DEMUX_SET_TITLE:
+ i_idx = (int)va_arg( args, int );
+ p_sys->p_musicemu->start_track( i_idx );
+ p_demux->info.i_title = i_idx;
+ p_demux->info.i_update = INPUT_UPDATE_TITLE;
+ msg_Dbg( p_demux, "set title %i", i_idx);
+ return VLC_SUCCESS;
+
+ case DEMUX_GET_FPS: /* meaningless */
+ default:
+ return VLC_EGENERIC;
+ }
+
+}
+
+#ifdef HAVE_ZLIB_H
+static void inflate_gzbuf(uint8_t * p_buffer, size_t i_size, uint8_t ** pp_obuffer, size_t * pi_osize)
+{
+ z_stream z_str;
+ int err;
+ size_t offset, out_size;
+ uint8_t * out_buffer;
+
+ (*pp_obuffer) = NULL;
+ (*pi_osize) = 0;
+
+ memset(&z_str, 0, sizeof(z_str));
+
+ out_size = i_size * 2;
+ out_buffer = (uint8_t*)malloc(out_size);
+
+ z_str.next_in = (unsigned char*)p_buffer;
+ z_str.avail_in = i_size;
+ z_str.next_out = out_buffer;
+ z_str.avail_out = out_size;
+
+ if ((err = inflateInit2(&z_str, 31)) != Z_OK) /* gzip format */
+ {
+ free(out_buffer);
+ return;
+ }
+
+ while ((err = inflate(&z_str, Z_FINISH)) != Z_STREAM_END)
+ {
+ switch(err)
+ {
+ case Z_OK:
+ break;
+ case Z_BUF_ERROR:
+ offset = z_str.next_out - out_buffer;
+ out_size *= 2;
+ out_buffer = (uint8_t *)realloc(out_buffer, out_size);
+ z_str.next_out = out_buffer + offset;
+ z_str.avail_out = out_size - offset;
+ break;
+ default:
+ inflateEnd(&z_str);
+ free(out_buffer);
+ return;
+ }
+ }
+
+ (*pi_osize) = out_size - z_str.avail_out;
+
+ inflateEnd(&z_str);
+
+ out_buffer = (uint8_t *)realloc(out_buffer, *pi_osize);
+ (*pp_obuffer) = out_buffer;
+}
+#endif
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