Use fast mode with patch track and patch record if possible.
Use fast mode with patch track/patch record if fast mixer/fast capture
is enabled. With the fast track and fast mixer/fast capture, we can get
a better performance on latency.
Bug: 111800664
Test: make phone call on marlin/walleye with enabling legacy usb hal
Change-Id: I0edd5978049e7c55da217a7a19e45fcbe5c3ac62
diff --git a/services/audioflinger/FastCapture.cpp b/services/audioflinger/FastCapture.cpp
index d063772..dd84bf2 100644
--- a/services/audioflinger/FastCapture.cpp
+++ b/services/audioflinger/FastCapture.cpp
@@ -20,6 +20,7 @@
#define ATRACE_TAG ATRACE_TAG_AUDIO
#include "Configuration.h"
+#include <audio_utils/format.h>
#include <linux/futex.h>
#include <sys/syscall.h>
#include <media/AudioBufferProvider.h>
@@ -161,7 +162,21 @@
const FastCaptureState * const current = (const FastCaptureState *) mCurrent;
FastCaptureDumpState * const dumpState = (FastCaptureDumpState *) mDumpState;
const FastCaptureState::Command command = mCommand;
- const size_t frameCount = current->mFrameCount;
+ size_t frameCount = current->mFrameCount;
+ AudioBufferProvider* fastPatchRecordBufferProvider = current->mFastPatchRecordBufferProvider;
+ AudioBufferProvider::Buffer patchBuffer;
+
+ if (fastPatchRecordBufferProvider != 0) {
+ patchBuffer.frameCount = ~0;
+ status_t status = fastPatchRecordBufferProvider->getNextBuffer(&patchBuffer);
+ if (status != NO_ERROR) {
+ frameCount = 0;
+ } else if (patchBuffer.frameCount < frameCount) {
+ // TODO: Make sure that it doesn't cause any issues if we just get a small available
+ // buffer from the buffer provider.
+ frameCount = patchBuffer.frameCount;
+ }
+ }
if ((command & FastCaptureState::READ) /*&& isWarm*/) {
ALOG_ASSERT(mInputSource != NULL);
@@ -176,6 +191,7 @@
mTotalNativeFramesRead += framesRead;
dumpState->mFramesRead = mTotalNativeFramesRead;
mReadBufferState = framesRead;
+ patchBuffer.frameCount = framesRead;
} else {
dumpState->mReadErrors++;
mReadBufferState = 0;
@@ -193,11 +209,18 @@
}
if (mReadBufferState > 0) {
ssize_t framesWritten = mPipeSink->write(mReadBuffer, mReadBufferState);
- // FIXME This supports at most one fast capture client.
- // To handle multiple clients this could be converted to an array,
- // or with a lot more work the control block could be shared by all clients.
audio_track_cblk_t* cblk = current->mCblk;
- if (cblk != NULL && framesWritten > 0) {
+ if (fastPatchRecordBufferProvider != 0) {
+ // This indicates the fast track is a patch record, update the cblk by
+ // calling releaseBuffer().
+ memcpy_by_audio_format(patchBuffer.raw, current->mFastPatchRecordFormat,
+ mReadBuffer, mFormat.mFormat, framesWritten * mFormat.mChannelCount);
+ patchBuffer.frameCount = framesWritten;
+ fastPatchRecordBufferProvider->releaseBuffer(&patchBuffer);
+ } else if (cblk != NULL && framesWritten > 0) {
+ // FIXME This supports at most one fast capture client.
+ // To handle multiple clients this could be converted to an array,
+ // or with a lot more work the control block could be shared by all clients.
int32_t rear = cblk->u.mStreaming.mRear;
android_atomic_release_store(framesWritten + rear, &cblk->u.mStreaming.mRear);
cblk->mServer += framesWritten;