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sdl: fix audio recording

This commit is contained in:
Flyinghead 2021-05-14 19:04:54 +02:00
parent 1464c02903
commit 2e0c15bae7
1 changed files with 3 additions and 1 deletions
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4
core/oslib/audiobackend_sdl2.cpp
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@ -19,7 +19,7 @@ static struct {
static unsigned sample_count = 0; static unsigned sample_count = 0;
static SDL_AudioDeviceID recorddev; static SDL_AudioDeviceID recorddev;
u8 recordbuf[480 * 2]; u8 recordbuf[480 * 4];
std::atomic<size_t> rec_read; std::atomic<size_t> rec_read;
std::atomic<size_t> rec_write; std::atomic<size_t> rec_write;
@ -195,6 +195,8 @@ static u32 sdl2_record(void* frame, u32 samples)
while (samples > 0) while (samples > 0)
{ {
u32 avail = std::min(rec_write - rec_read, sizeof(recordbuf) - rec_read); u32 avail = std::min(rec_write - rec_read, sizeof(recordbuf) - rec_read);
if (avail == 0)
break;
avail = std::min(avail, samples); avail = std::min(avail, samples);
memcpy((u8 *)frame + count, &recordbuf[rec_read], avail); memcpy((u8 *)frame + count, &recordbuf[rec_read], avail);
rec_read = (rec_read + avail) % sizeof(recordbuf); rec_read = (rec_read + avail) % sizeof(recordbuf);