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use osx_output_delay to wait until ring buffer is able to write

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This further optimize the performance. 

This is now working properly with a conditional variable bug being fixed (8bbfb5cda1).
This commit is contained in:
Yue Wang
2016-09-19 08:51:03 -07:00
committed by GitHub
parent 8bbfb5cda1
commit d73267df5e
1 changed files with 8 additions and 7 deletions
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15
src/output/plugins/OSXOutputPlugin.cxx
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@@ -740,15 +740,16 @@ osx_output_play(AudioOutput *ao, const void *chunk, size_t size,
gcc_unused Error &error)
{
OSXOutput *od = (OSXOutput *)ao;
while (!od->ring_buffer->write_available()) {
struct timespec req;
req.tv_sec = 0;
req.tv_nsec = 25 * 1e6;
nanosleep(&req, NULL);
}
return od->ring_buffer->push((uint8_t *)chunk, size);
}
static unsigned
osx_output_delay(AudioOutput *ao)
{
OSXOutput *od = (OSXOutput *)ao;
return od->ring_buffer->write_available() ? 0 : 25;
}
const struct AudioOutputPlugin osx_output_plugin = {
"osx",
osx_output_test_default_device,
@@ -758,7 +759,7 @@ const struct AudioOutputPlugin osx_output_plugin = {
osx_output_disable,
osx_output_open,
osx_output_close,
nullptr,
osx_output_delay,
nullptr,
osx_output_play,
nullptr,