mirror of https://github.com/mpv-player/mpv
ao/audiounit: improve a/v sync
This more closely mimics ao_coreaudio, on which this driver was originally based. Signed-off-by: Aman Gupta <aman@tmm1.net>
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6c91314900
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@ -49,8 +49,8 @@ static OSStatus render_cb_lpcm(void *ctx, AudioUnitRenderActionFlags *aflags,
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planes[n] = buffer_list->mBuffers[n].mData;
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int64_t end = mp_time_us();
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end += ca_frames_to_us(ao, frames);
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end += p->device_latency * 1e6;
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end += ca_get_latency(ts) + ca_frames_to_us(ao, frames);
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ao_read_data(ao, planes, frames, end);
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return noErr;
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}
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@ -31,6 +31,8 @@
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#if HAVE_COREAUDIO
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#include "audio/out/ao_coreaudio_properties.h"
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#include <CoreAudio/HostTime.h>
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#else
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#include <mach/mach_time.h>
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#endif
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CFStringRef cfstr_from_cstr(char *str)
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@ -310,9 +312,9 @@ int64_t ca_frames_to_us(struct ao *ao, uint32_t frames)
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return frames / (float) ao->samplerate * 1e6;
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}
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#if HAVE_COREAUDIO
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int64_t ca_get_latency(const AudioTimeStamp *ts)
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{
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#if HAVE_COREAUDIO
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uint64_t out = AudioConvertHostTimeToNanos(ts->mHostTime);
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uint64_t now = AudioConvertHostTimeToNanos(AudioGetCurrentHostTime());
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@ -320,8 +322,22 @@ int64_t ca_get_latency(const AudioTimeStamp *ts)
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return 0;
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return (out - now) * 1e-3;
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#else
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static mach_timebase_info_data_t timebase;
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if (timebase.denom == 0)
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mach_timebase_info(&timebase);
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uint64_t out = ts->mHostTime;
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uint64_t now = mach_absolute_time();
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if (now > out)
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return 0;
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return (out - now) * timebase.numer / timebase.denom / 1e3;
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#endif
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}
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#if HAVE_COREAUDIO
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bool ca_stream_supports_compressed(struct ao *ao, AudioStreamID stream)
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{
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AudioStreamRangedDescription *formats = NULL;
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@ -65,9 +65,7 @@ bool ca_asbd_is_better(AudioStreamBasicDescription *req,
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AudioStreamBasicDescription *new);
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int64_t ca_frames_to_us(struct ao *ao, uint32_t frames);
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#if HAVE_COREAUDIO
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int64_t ca_get_latency(const AudioTimeStamp *ts);
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#endif
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#if HAVE_COREAUDIO
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bool ca_stream_supports_compressed(struct ao *ao, AudioStreamID stream);
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