38 lines
876 B
C
38 lines
876 B
C
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#include "../blip_buf/blip_buf.h"
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#include "sound_output.h"
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#include "cycles.h"
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static blip_t* lb;
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static blip_t* rb;
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static uint64_t startclock;
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#define RELATIVECLOCK (cycles.sampleclock - startclock)
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void blip_left(int delta)
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{
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if (delta)
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blip_add_delta(lb, RELATIVECLOCK, delta);
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}
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void blip_right(int delta)
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{
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if (delta)
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blip_add_delta(rb, RELATIVECLOCK, delta);
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}
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void sound_output_init(double clock_rate, double sample_rate)
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{
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lb = blip_new(1024);
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rb = blip_new(1024);
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blip_set_rates(lb, clock_rate, sample_rate);
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blip_set_rates(rb, clock_rate, sample_rate);
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}
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int sound_output_read(int16_t* output)
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{
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blip_end_frame(lb, RELATIVECLOCK);
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blip_end_frame(rb, RELATIVECLOCK);
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startclock = cycles.sampleclock;
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int ret = blip_read_samples(lb, output, 2048, 1);
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blip_read_samples(rb, output + 1, 2048, 1);
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return ret;
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}
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