| /* |
| * Copyright 2019 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <oboe/AudioStreamBuilder.h> |
| #include <oboe/Oboe.h> |
| |
| #include "OboeDebug.h" |
| #include "QuirksManager.h" |
| |
| #ifndef __ANDROID_API_R__ |
| #define __ANDROID_API_R__ 30 |
| #endif |
| |
| using namespace oboe; |
| |
| int32_t QuirksManager::DeviceQuirks::clipBufferSize(AudioStream &stream, |
| int32_t requestedSize) { |
| if (!OboeGlobals::areWorkaroundsEnabled()) { |
| return requestedSize; |
| } |
| int bottomMargin = kDefaultBottomMarginInBursts; |
| int topMargin = kDefaultTopMarginInBursts; |
| if (isMMapUsed(stream)) { |
| if (stream.getSharingMode() == SharingMode::Exclusive) { |
| bottomMargin = getExclusiveBottomMarginInBursts(); |
| topMargin = getExclusiveTopMarginInBursts(); |
| } |
| } else { |
| bottomMargin = kLegacyBottomMarginInBursts; |
| } |
| |
| int32_t burst = stream.getFramesPerBurst(); |
| int32_t minSize = bottomMargin * burst; |
| int32_t adjustedSize = requestedSize; |
| if (adjustedSize < minSize ) { |
| adjustedSize = minSize; |
| } else { |
| int32_t maxSize = stream.getBufferCapacityInFrames() - (topMargin * burst); |
| if (adjustedSize > maxSize ) { |
| adjustedSize = maxSize; |
| } |
| } |
| return adjustedSize; |
| } |
| |
| bool QuirksManager::DeviceQuirks::isAAudioMMapPossible(const AudioStreamBuilder &builder) const { |
| bool isSampleRateCompatible = |
| builder.getSampleRate() == oboe::Unspecified |
| || builder.getSampleRate() == kCommonNativeRate |
| || builder.getSampleRateConversionQuality() != SampleRateConversionQuality::None; |
| return builder.getPerformanceMode() == PerformanceMode::LowLatency |
| && isSampleRateCompatible |
| && builder.getChannelCount() <= kChannelCountStereo; |
| } |
| |
| class SamsungDeviceQuirks : public QuirksManager::DeviceQuirks { |
| public: |
| SamsungDeviceQuirks() { |
| std::string arch = getPropertyString("ro.arch"); |
| isExynos = (arch.rfind("exynos", 0) == 0); // starts with? |
| |
| std::string chipname = getPropertyString("ro.hardware.chipname"); |
| isExynos9810 = (chipname == "exynos9810"); |
| } |
| |
| virtual ~SamsungDeviceQuirks() = default; |
| |
| int32_t getExclusiveBottomMarginInBursts() const override { |
| // TODO Make this conditional on build version when MMAP timing improves. |
| return isExynos ? kBottomMarginExynos : kBottomMarginOther; |
| } |
| |
| int32_t getExclusiveTopMarginInBursts() const override { |
| return kTopMargin; |
| } |
| |
| // See Oboe issue #824 for more information. |
| bool isMonoMMapActuallyStereo() const override { |
| return isExynos9810; // TODO We can make this version specific if it gets fixed. |
| } |
| |
| bool isAAudioMMapPossible(const AudioStreamBuilder &builder) const override { |
| return DeviceQuirks::isAAudioMMapPossible(builder) |
| // Samsung says they use Legacy for Camcorder |
| && builder.getInputPreset() != oboe::InputPreset::Camcorder; |
| } |
| |
| private: |
| // Stay farther away from DSP position on Exynos devices. |
| static constexpr int32_t kBottomMarginExynos = 2; |
| static constexpr int32_t kBottomMarginOther = 1; |
| static constexpr int32_t kTopMargin = 1; |
| bool isExynos = false; |
| bool isExynos9810 = false; |
| }; |
| |
| QuirksManager::QuirksManager() { |
| std::string manufacturer = getPropertyString("ro.product.manufacturer"); |
| if (manufacturer == "samsung") { |
| mDeviceQuirks = std::make_unique<SamsungDeviceQuirks>(); |
| } else { |
| mDeviceQuirks = std::make_unique<DeviceQuirks>(); |
| } |
| } |
| |
| bool QuirksManager::isConversionNeeded( |
| const AudioStreamBuilder &builder, |
| AudioStreamBuilder &childBuilder) { |
| bool conversionNeeded = false; |
| const bool isLowLatency = builder.getPerformanceMode() == PerformanceMode::LowLatency; |
| const bool isInput = builder.getDirection() == Direction::Input; |
| const bool isFloat = builder.getFormat() == AudioFormat::Float; |
| |
| // There are multiple bugs involving using callback with a specified callback size. |
| // Issue #778: O to Q had a problem with Legacy INPUT streams for FLOAT streams |
| // and a specified callback size. It would assert because of a bad buffer size. |
| // |
| // Issue #973: O to R had a problem with Legacy output streams using callback and a specified callback size. |
| // An AudioTrack stream could still be running when the AAudio FixedBlockReader was closed. |
| // Internally b/161914201#comment25 |
| // |
| // Issue #983: O to R would glitch if the framesPerCallback was too small. |
| // |
| // Most of these problems were related to Legacy stream. MMAP was OK. But we don't |
| // know if we will get an MMAP stream. So, to be safe, just do the conversion in Oboe. |
| if (OboeGlobals::areWorkaroundsEnabled() |
| && builder.willUseAAudio() |
| && builder.isDataCallbackSpecified() |
| && builder.getFramesPerCallback() != 0 |
| && getSdkVersion() <= __ANDROID_API_R__) { |
| LOGI("QuirksManager::%s() avoid setFramesPerCallback(n>0)", __func__); |
| childBuilder.setFramesPerCallback(oboe::Unspecified); |
| conversionNeeded = true; |
| } |
| |
| // If a SAMPLE RATE is specified for low latency then let the native code choose an optimal rate. |
| // TODO There may be a problem if the devices supports low latency |
| // at a higher rate than the default. |
| if (builder.getSampleRate() != oboe::Unspecified |
| && builder.getSampleRateConversionQuality() != SampleRateConversionQuality::None |
| && isLowLatency |
| ) { |
| childBuilder.setSampleRate(oboe::Unspecified); // native API decides the best sample rate |
| conversionNeeded = true; |
| } |
| |
| // Data Format |
| // OpenSL ES and AAudio before P do not support FAST path for FLOAT capture. |
| if (isFloat |
| && isInput |
| && builder.isFormatConversionAllowed() |
| && isLowLatency |
| && (!builder.willUseAAudio() || (getSdkVersion() < __ANDROID_API_P__)) |
| ) { |
| childBuilder.setFormat(AudioFormat::I16); // needed for FAST track |
| conversionNeeded = true; |
| LOGI("QuirksManager::%s() forcing internal format to I16 for low latency", __func__); |
| } |
| |
| // Channel Count conversions |
| if (OboeGlobals::areWorkaroundsEnabled() |
| && builder.isChannelConversionAllowed() |
| && builder.getChannelCount() == kChannelCountStereo |
| && isInput |
| && isLowLatency |
| && (!builder.willUseAAudio() && (getSdkVersion() == __ANDROID_API_O__)) |
| ) { |
| // Workaround for heap size regression in O. |
| // b/66967812 AudioRecord does not allow FAST track for stereo capture in O |
| childBuilder.setChannelCount(kChannelCountMono); |
| conversionNeeded = true; |
| LOGI("QuirksManager::%s() using mono internally for low latency on O", __func__); |
| } else if (OboeGlobals::areWorkaroundsEnabled() |
| && builder.getChannelCount() == kChannelCountMono |
| && isInput |
| && mDeviceQuirks->isMonoMMapActuallyStereo() |
| && builder.willUseAAudio() |
| // Note: we might use this workaround on a device that supports |
| // MMAP but will use Legacy for this stream. But this will only happen |
| // on devices that have the broken mono. |
| && mDeviceQuirks->isAAudioMMapPossible(builder) |
| ) { |
| // Workaround for mono actually running in stereo mode. |
| childBuilder.setChannelCount(kChannelCountStereo); // Use stereo and extract first channel. |
| conversionNeeded = true; |
| LOGI("QuirksManager::%s() using stereo internally to avoid broken mono", __func__); |
| } |
| // Note that MMAP does not support mono in 8.1. But that would only matter on Pixel 1 |
| // phones and they have almost all been updated to 9.0. |
| |
| return conversionNeeded; |
| } |
