When fast flag is denied, retry with new I/O handle (2854e518) · Commits · e / os / android_frameworks_av

media/libmedia/AudioRecord.cpp

+33 −17

Original line number	Diff line number	Diff line
		@@ -522,6 +522,14 @@ status_t AudioRecord::openRecord_l(const Modulo<uint32_t> &epoch, const String16
		// After fast request is denied, we will request again if IAudioRecord is re-created.

		status_t status;

		// Not a conventional loop, but a retry loop for at most two iterations total.
		// Try first maybe with FAST flag then try again without FAST flag if that fails.
		// Exits loop normally via a return at the bottom, or with error via a break.
		// The sp<> references will be dropped when re-entering scope.
		// The lack of indentation is deliberate, to reduce code churn and ease merges.
		for (;;) {

		status = AudioSystem::getInputForAttr(&mAttributes, &input,
		(audio_session_t)mSessionId,
		// FIXME compare to AudioTrack
		@@ -535,7 +543,7 @@ status_t AudioRecord::openRecord_l(const Modulo<uint32_t> &epoch, const String16
		mSessionId, mAttributes.source, mSampleRate, mFormat, mChannelMask, mFlags);
		return BAD_VALUE;
		}
		{

		// Now that we have a reference to an I/O handle and have not yet handed it off to AudioFlinger,
		// we must release it ourselves if anything goes wrong.

		@@ -544,7 +552,7 @@ status_t AudioRecord::openRecord_l(const Modulo<uint32_t> &epoch, const String16
		status = AudioSystem::getFrameCount(input, &afFrameCount);
		if (status != NO_ERROR) {
		ALOGE("getFrameCount(input=%d) status %d", input, status);
		goto release;
		break;
		}
		#endif

		@@ -552,7 +560,7 @@ status_t AudioRecord::openRecord_l(const Modulo<uint32_t> &epoch, const String16
		status = AudioSystem::getSamplingRate(input, &afSampleRate);
		if (status != NO_ERROR) {
		ALOGE("getSamplingRate(input=%d) status %d", input, status);
		goto release;
		break;
		}
		if (mSampleRate == 0) {
		mSampleRate = afSampleRate;
		@@ -572,7 +580,10 @@ status_t AudioRecord::openRecord_l(const Modulo<uint32_t> &epoch, const String16
		ALOGW("AUDIO_INPUT_FLAG_FAST denied by client; transfer %d, "
		"track %u Hz, input %u Hz",
		mTransfer, mSampleRate, afSampleRate);
		mFlags = (audio_input_flags_t) (mFlags & ~AUDIO_INPUT_FLAG_FAST);
		mFlags = (audio_input_flags_t) (mFlags & ~(AUDIO_INPUT_FLAG_FAST \|
		AUDIO_INPUT_FLAG_RAW));
		AudioSystem::releaseInput(input, (audio_session_t)mSessionId);
		continue; // retry
		}
		}

		@@ -616,13 +627,26 @@ status_t AudioRecord::openRecord_l(const Modulo<uint32_t> &epoch, const String16

		if (status != NO_ERROR) {
		ALOGE("AudioFlinger could not create record track, status: %d", status);
		goto release;
		break;
		}
		ALOG_ASSERT(record != 0);

		// AudioFlinger now owns the reference to the I/O handle,
		// so we are no longer responsible for releasing it.

		mAwaitBoost = false;
		if (mFlags & AUDIO_INPUT_FLAG_FAST) {
		if (trackFlags & IAudioFlinger::TRACK_FAST) {
		ALOGI("AUDIO_INPUT_FLAG_FAST successful; frameCount %zu", frameCount);
		mAwaitBoost = true;
		} else {
		ALOGW("AUDIO_INPUT_FLAG_FAST denied by server; frameCount %zu", frameCount);
		mFlags = (audio_input_flags_t) (mFlags & ~(AUDIO_INPUT_FLAG_FAST \|
		AUDIO_INPUT_FLAG_RAW));
		continue; // retry
		}
		}

		if (iMem == 0) {
		ALOGE("Could not get control block");
		return NO_INIT;
		@@ -665,17 +689,6 @@ status_t AudioRecord::openRecord_l(const Modulo<uint32_t> &epoch, const String16
		}
		frameCount = temp;

		mAwaitBoost = false;
		if (mFlags & AUDIO_INPUT_FLAG_FAST) {
		if (trackFlags & IAudioFlinger::TRACK_FAST) {
		ALOGV("AUDIO_INPUT_FLAG_FAST successful; frameCount %zu", frameCount);
		mAwaitBoost = true;
		} else {
		ALOGW("AUDIO_INPUT_FLAG_FAST denied by server; frameCount %zu", frameCount);
		mFlags = (audio_input_flags_t) (mFlags & ~AUDIO_INPUT_FLAG_FAST);
		}
		}

		// Make sure that application is notified with sufficient margin before overrun.
		// The computation is done on server side.
		if (mNotificationFramesReq > 0 && notificationFrames != mNotificationFramesReq) {
		@@ -708,9 +721,12 @@ status_t AudioRecord::openRecord_l(const Modulo<uint32_t> &epoch, const String16
		}

		return NO_ERROR;

		// End of retry loop.
		// The lack of indentation is deliberate, to reduce code churn and ease merges.
		}

		release:
		// Arrive here on error, via a break
		AudioSystem::releaseInput(input, (audio_session_t)mSessionId);
		if (status == NO_ERROR) {
		status = NO_INIT;