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70 lines
1.5 KiB
C++
70 lines
1.5 KiB
C++
// C++ example that opens a game music file and records 10 seconds to "out.wav"
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#include "gme/Music_Emu.h"
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#include "Wave_Writer.h"
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#include <stdlib.h>
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#include <stdio.h>
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void handle_error( const char* str );
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int main(int argc, char *argv[])
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{
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const char *filename = "test.nsf"; /* Default file to open */
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if ( argc >= 2 )
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filename = argv[1];
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long sample_rate = 44100; // number of samples per second
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// index of track to play (0 = first)
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int track = argc >= 3 ? atoi(argv[2]) : 0;
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// Determine file type
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gme_type_t file_type;
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handle_error( gme_identify_file( filename, &file_type ) );
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if ( !file_type )
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handle_error( "Unsupported music type" );
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// Create emulator and set sample rate
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Music_Emu* emu = file_type->new_emu();
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if ( !emu )
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handle_error( "Out of memory" );
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handle_error( emu->set_sample_rate( sample_rate ) );
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// Load music file into emulator
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handle_error( emu->load_file( filename ) );
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// Start track
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handle_error( emu->start_track( track ) );
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// Begin writing to wave file
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Wave_Writer wave( sample_rate, "out.wav" );
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wave.enable_stereo();
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// Record 10 seconds of track
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while ( emu->tell() < 10 * 1000L )
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{
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// Sample buffer
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const long size = 1024; // can be any multiple of 2
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short buf [size];
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// Fill buffer
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handle_error( emu->play( size, buf ) );
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// Write samples to wave file
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wave.write( buf, size );
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}
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// Cleanup
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delete emu;
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return 0;
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}
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void handle_error( const char* str )
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{
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if ( str )
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{
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printf( "Error: %s\n", str ); getchar();
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exit( EXIT_FAILURE );
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}
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}
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