/**
* @brief Decodes a chunk of the previously loaded SPC data into PCM data.
* @param decoded_data pointer to where you want the decoded data to be wrote
* @param nb_samples number of samples to write
*/
void SpcDecoder::decode(int16_t *decoded_data, int nb_samples) {
// decode from the SPC data the specified number of PCM samples
const char *err = spc_play(snes_spc_manager, nb_samples, (short int*) decoded_data);
Debug::check_assertion(err == NULL, StringConcat() << "Failed to decode SPC data: " << err);
spc_filter_run(snes_spc_filter, (short int*) decoded_data, nb_samples);
}
/**
* \brief Decodes a chunk of the previously loaded SPC data into PCM data.
* \param decoded_data pointer to where you want the decoded data to be written.
* \param nb_samples Number of samples to write.
*/
void SpcDecoder::decode(int16_t* decoded_data, int nb_samples) {
// Decode from the SPC data the specified number of PCM samples.
const char* err = spc_play(snes_spc_manager.get(), nb_samples, (short int*) decoded_data);
if (err != nullptr) {
Debug::die(std::string("Failed to decode SPC data: ") + err);
}
spc_filter_run(snes_spc_filter.get(), (short int*) decoded_data, nb_samples);
}
void record_wav( const char* path, int secs )
{
/* Start writing wave file */
wave_open( spc_sample_rate, path );
wave_enable_stereo();
while ( wave_sample_count() < secs * spc_sample_rate * 2 )
{
/* Play into buffer */
#define BUF_SIZE 2048
short buf [BUF_SIZE];
error( spc_play( snes_spc, BUF_SIZE, buf ) );
wave_write( buf, BUF_SIZE );
}
wave_close();
}
int main( int argc, char** argv )
{
/* Create emulator and filter */
SNES_SPC* snes_spc = spc_new();
SPC_Filter* filter = spc_filter_new();
if ( !snes_spc || !filter ) error( "Out of memory" );
/* Load SPC */
{
/* Load file into memory */
long spc_size;
void* spc = load_file( (argc > 1) ? argv [1] : "test.spc", &spc_size );
/* Load SPC data into emulator */
error( spc_load_spc( snes_spc, spc, spc_size ) );
free( spc ); /* emulator makes copy of data */
/* Most SPC files have garbage data in the echo buffer, so clear that */
spc_clear_echo( snes_spc );
/* Clear filter before playing */
spc_filter_clear( filter );
}
/* Record 20 seconds to wave file */
wave_open( spc_sample_rate, "out.wav" );
wave_enable_stereo();
while ( wave_sample_count() < 60 * spc_sample_rate * 2 )
{
/* Play into buffer */
#define BUF_SIZE 2048
short buf [BUF_SIZE];
error( spc_play( snes_spc, BUF_SIZE, buf ) );
/* Filter samples */
spc_filter_run( filter, buf, BUF_SIZE );
wave_write( buf, BUF_SIZE );
}
/* Cleanup */
spc_filter_delete( filter );
spc_delete( snes_spc );
wave_close();
return 0;
}
void make_save_state( const char* path )
{
/* Load SPC */
long spc_size;
void* spc = load_file( path, &spc_size );
error( spc_load_spc( snes_spc, spc, spc_size ) );
free( spc );
spc_clear_echo( snes_spc );
/* Skip several seconds */
error( spc_play( snes_spc, 5 * spc_sample_rate * 2, 0 ) );
/* Save state to file */
{
static unsigned char state [spc_state_size]; /* buffer large enough for data */
unsigned char* out = state;
spc_copy_state( snes_spc, &out, state_save );
write_file( "state.bin", state, out - state );
}
record_wav( "first.wav", 5 );
}
