diff options
Diffstat (limited to 'ym2612.c')
| -rw-r--r-- | ym2612.c | 34 |
1 files changed, 33 insertions, 1 deletions
@@ -4,6 +4,7 @@ #include <stdlib.h> #include "ym2612.h" #include "render.h" +#include "wave.h" //#define DO_DEBUG_PRINT #ifdef DO_DEBUG_PRINT @@ -97,7 +98,18 @@ uint16_t round_fixed_point(double value, int dec_bits) FILE * debug_file = NULL; uint32_t first_key_on=0; -void ym_init(ym2612_context * context, uint32_t sample_rate, uint32_t master_clock, uint32_t clock_div, uint32_t sample_limit) +ym2612_context * log_context = NULL; + +void ym_finalize_log() +{ + for (int i = 0; i < NUM_CHANNELS; i++) { + if (log_context->channels[i].logfile) { + wave_finalize(log_context->channels[i].logfile); + } + } +} + +void ym_init(ym2612_context * context, uint32_t sample_rate, uint32_t master_clock, uint32_t clock_div, uint32_t sample_limit, uint32_t options) { dfopen(debug_file, "ym_debug.txt", "w"); memset(context, 0, sizeof(*context)); @@ -114,6 +126,23 @@ void ym_init(ym2612_context * context, uint32_t sample_rate, uint32_t master_clo //some games seem to expect that the LR flags start out as 1 for (int i = 0; i < NUM_CHANNELS; i++) { context->channels[i].lr = 0xC0; + if (options & YM_OPT_WAVE_LOG) { + char fname[64]; + sprintf(fname, "ym_channel_%d.wav", i); + FILE * f = context->channels[i].logfile = fopen(fname, "wb"); + if (!f) { + fprintf(stderr, "Failed to open WAVE log file %s for writing\n", fname); + continue; + } + if (!wave_init(f, sample_rate, 16, 1)) { + fclose(f); + context->channels[i].logfile = NULL; + } + } + } + if (options & YM_OPT_WAVE_LOG) { + log_context = context; + atexit(ym_finalize_log); } if (!did_tbl_init) { //populate sine table @@ -372,6 +401,9 @@ void ym_run(ym2612_context * context, uint32_t to_cycle) if (value & 0x2000) { value |= 0xC000; } + if (context->channels[i].logfile) { + fwrite(&value, sizeof(value), 1, context->channels[i].logfile); + } if (context->channels[i].lr & 0x80) { context->audio_buffer[context->buffer_pos] += value / YM_VOLUME_DIVIDER; } |