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Diffstat (limited to 'audio/coreaudio.c')
-rw-r--r--audio/coreaudio.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/audio/coreaudio.c b/audio/coreaudio.c
index d8a21d3e50..1fdd1d4b14 100644
--- a/audio/coreaudio.c
+++ b/audio/coreaudio.c
@@ -333,12 +333,10 @@ static OSStatus audioDeviceIOProc(
len = frameCount * hw->info.bytes_per_frame;
while (len) {
- size_t write_len;
- ssize_t start = ((ssize_t) hw->pos_emul) - hw->pending_emul;
- if (start < 0) {
- start += hw->size_emul;
- }
- assert(start >= 0 && start < hw->size_emul);
+ size_t write_len, start;
+
+ start = audio_ring_posb(hw->pos_emul, hw->pending_emul, hw->size_emul);
+ assert(start < hw->size_emul);
write_len = MIN(MIN(hw->pending_emul, len),
hw->size_emul - start);