Mercurial > repos > blastem
diff blastem.c @ 1002:8d032a368dd5
Made low pass filter frequency configurable
| author | Michael Pavone <pavone@retrodev.com> |
|---|---|
| date | Sun, 01 May 2016 13:36:14 -0700 |
| parents | 560da2e455c2 |
| children | 51885857c019 |
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--- a/blastem.c Sat Apr 30 20:57:29 2016 -0700 +++ b/blastem.c Sun May 01 13:36:14 2016 -0700 @@ -32,6 +32,7 @@ #define MCLKS_PER_Z80 15 #define MCLKS_PER_PSG (MCLKS_PER_Z80*16) #define DEFAULT_SYNC_INTERVAL MCLKS_LINE +#define DEFAULT_LOWPASS_CUTOFF 3390 //TODO: Figure out the exact value for this #define LINES_NTSC 262 @@ -898,11 +899,14 @@ char * config_cycles = tern_find_path(config, "clocks\0max_cycles\0").ptrval; gen->max_cycles = config_cycles ? atoi(config_cycles) : DEFAULT_SYNC_INTERVAL; + char * lowpass_cutoff_str = tern_find_path(config, "audio\0lowpass_cutoff\0").ptrval; + uint32_t lowpass_cutoff = lowpass_cutoff_str ? atoi(lowpass_cutoff_str) : DEFAULT_LOWPASS_CUTOFF; + gen->ym = malloc(sizeof(ym2612_context)); - ym_init(gen->ym, render_sample_rate(), gen->master_clock, MCLKS_PER_YM, render_audio_buffer(), ym_opts); + ym_init(gen->ym, render_sample_rate(), gen->master_clock, MCLKS_PER_YM, render_audio_buffer(), ym_opts, lowpass_cutoff); gen->psg = malloc(sizeof(psg_context)); - psg_init(gen->psg, render_sample_rate(), gen->master_clock, MCLKS_PER_PSG, render_audio_buffer()); + psg_init(gen->psg, render_sample_rate(), gen->master_clock, MCLKS_PER_PSG, render_audio_buffer(), lowpass_cutoff); gen->z80 = calloc(1, sizeof(z80_context)); #ifndef NO_Z80