Move Codec2-related code from hardware/google/av
Test: None
Bug: 112362730
Change-Id: Ie2f8ff431d65c40333f267ab9877d47089adeea4
diff --git a/media/codec2/components/flac/Android.bp b/media/codec2/components/flac/Android.bp
new file mode 100644
index 0000000..32c3b36
--- /dev/null
+++ b/media/codec2/components/flac/Android.bp
@@ -0,0 +1,27 @@
+cc_library_shared {
+ name: "libstagefright_soft_c2flacdec",
+ defaults: [
+ "libstagefright_soft_c2-defaults",
+ "libstagefright_soft_c2_sanitize_all-defaults",
+ ],
+
+ header_libs: ["libFLAC-headers"],
+
+ srcs: ["C2SoftFlacDec.cpp"],
+
+ shared_libs: [
+ "libstagefright_flacdec",
+ ],
+}
+
+cc_library_shared {
+ name: "libstagefright_soft_c2flacenc",
+ defaults: [
+ "libstagefright_soft_c2-defaults",
+ "libstagefright_soft_c2_sanitize_all-defaults",
+ ],
+
+ srcs: ["C2SoftFlacEnc.cpp"],
+
+ static_libs: ["libFLAC"],
+}
diff --git a/media/codec2/components/flac/C2SoftFlacDec.cpp b/media/codec2/components/flac/C2SoftFlacDec.cpp
new file mode 100644
index 0000000..f1e2f51
--- /dev/null
+++ b/media/codec2/components/flac/C2SoftFlacDec.cpp
@@ -0,0 +1,372 @@
+/*
+ * Copyright (C) 2018 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.
+ */
+
+//#define LOG_NDEBUG 0
+#define LOG_TAG "C2SoftFlacDec"
+#include <log/log.h>
+
+#include <media/stagefright/foundation/MediaDefs.h>
+
+#include <C2PlatformSupport.h>
+#include <SimpleC2Interface.h>
+
+#include "C2SoftFlacDec.h"
+
+namespace android {
+
+constexpr char COMPONENT_NAME[] = "c2.android.flac.decoder";
+
+class C2SoftFlacDec::IntfImpl : public C2InterfaceHelper {
+public:
+ explicit IntfImpl(const std::shared_ptr<C2ReflectorHelper> &helper)
+ : C2InterfaceHelper(helper) {
+
+ setDerivedInstance(this);
+
+ addParameter(
+ DefineParam(mInputFormat, C2_NAME_INPUT_STREAM_FORMAT_SETTING)
+ .withConstValue(new C2StreamFormatConfig::input(0u, C2FormatCompressed))
+ .build());
+
+ addParameter(
+ DefineParam(mOutputFormat, C2_NAME_OUTPUT_STREAM_FORMAT_SETTING)
+ .withConstValue(new C2StreamFormatConfig::output(0u, C2FormatAudio))
+ .build());
+
+ addParameter(
+ DefineParam(mInputMediaType, C2_NAME_INPUT_PORT_MIME_SETTING)
+ .withConstValue(AllocSharedString<C2PortMimeConfig::input>(
+ MEDIA_MIMETYPE_AUDIO_FLAC))
+ .build());
+
+ addParameter(
+ DefineParam(mOutputMediaType, C2_NAME_OUTPUT_PORT_MIME_SETTING)
+ .withConstValue(AllocSharedString<C2PortMimeConfig::output>(
+ MEDIA_MIMETYPE_AUDIO_RAW))
+ .build());
+
+ addParameter(
+ DefineParam(mSampleRate, C2_NAME_STREAM_SAMPLE_RATE_SETTING)
+ .withDefault(new C2StreamSampleRateInfo::output(0u, 44100))
+ .withFields({C2F(mSampleRate, value).inRange(1, 655350)})
+ .withSetter((Setter<decltype(*mSampleRate)>::StrictValueWithNoDeps))
+ .build());
+
+ addParameter(
+ DefineParam(mChannelCount, C2_NAME_STREAM_CHANNEL_COUNT_SETTING)
+ .withDefault(new C2StreamChannelCountInfo::output(0u, 1))
+ .withFields({C2F(mChannelCount, value).inRange(1, 8)})
+ .withSetter(Setter<decltype(*mChannelCount)>::StrictValueWithNoDeps)
+ .build());
+
+ addParameter(
+ DefineParam(mBitrate, C2_NAME_STREAM_BITRATE_SETTING)
+ .withDefault(new C2BitrateTuning::input(0u, 768000))
+ .withFields({C2F(mBitrate, value).inRange(1, 21000000)})
+ .withSetter(Setter<decltype(*mBitrate)>::NonStrictValueWithNoDeps)
+ .build());
+
+ addParameter(
+ DefineParam(mInputMaxBufSize, C2_PARAMKEY_INPUT_MAX_BUFFER_SIZE)
+ .withConstValue(new C2StreamMaxBufferSizeInfo::input(0u, 32768))
+ .build());
+ }
+
+private:
+ std::shared_ptr<C2StreamFormatConfig::input> mInputFormat;
+ std::shared_ptr<C2StreamFormatConfig::output> mOutputFormat;
+ std::shared_ptr<C2PortMimeConfig::input> mInputMediaType;
+ std::shared_ptr<C2PortMimeConfig::output> mOutputMediaType;
+ std::shared_ptr<C2StreamSampleRateInfo::output> mSampleRate;
+ std::shared_ptr<C2StreamChannelCountInfo::output> mChannelCount;
+ std::shared_ptr<C2BitrateTuning::input> mBitrate;
+ std::shared_ptr<C2StreamMaxBufferSizeInfo::input> mInputMaxBufSize;
+};
+
+C2SoftFlacDec::C2SoftFlacDec(
+ const char *name,
+ c2_node_id_t id,
+ const std::shared_ptr<IntfImpl> &intfImpl)
+ : SimpleC2Component(std::make_shared<SimpleInterface<IntfImpl>>(name, id, intfImpl)),
+ mIntf(intfImpl),
+ mFLACDecoder(nullptr) {
+}
+
+C2SoftFlacDec::~C2SoftFlacDec() {
+ onRelease();
+}
+
+c2_status_t C2SoftFlacDec::onInit() {
+ status_t err = initDecoder();
+ return err == OK ? C2_OK : C2_NO_MEMORY;
+}
+
+c2_status_t C2SoftFlacDec::onStop() {
+ if (mFLACDecoder) mFLACDecoder->flush();
+ memset(&mStreamInfo, 0, sizeof(mStreamInfo));
+ mHasStreamInfo = false;
+ mSignalledError = false;
+ mSignalledOutputEos = false;
+ return C2_OK;
+}
+
+void C2SoftFlacDec::onReset() {
+ mInputBufferCount = 0;
+ (void)onStop();
+}
+
+void C2SoftFlacDec::onRelease() {
+ mInputBufferCount = 0;
+ if (mFLACDecoder) delete mFLACDecoder;
+ mFLACDecoder = nullptr;
+}
+
+c2_status_t C2SoftFlacDec::onFlush_sm() {
+ return onStop();
+}
+
+status_t C2SoftFlacDec::initDecoder() {
+ if (mFLACDecoder) {
+ delete mFLACDecoder;
+ }
+ mFLACDecoder = FLACDecoder::Create();
+ if (!mFLACDecoder) {
+ ALOGE("initDecoder: failed to create FLACDecoder");
+ mSignalledError = true;
+ return NO_MEMORY;
+ }
+
+ memset(&mStreamInfo, 0, sizeof(mStreamInfo));
+ mHasStreamInfo = false;
+ mSignalledError = false;
+ mSignalledOutputEos = false;
+ mInputBufferCount = 0;
+
+ return OK;
+}
+
+static void fillEmptyWork(const std::unique_ptr<C2Work> &work) {
+ work->worklets.front()->output.flags = work->input.flags;
+ work->worklets.front()->output.buffers.clear();
+ work->worklets.front()->output.ordinal = work->input.ordinal;
+ work->workletsProcessed = 1u;
+}
+
+// (TODO) add multiframe support, in plugin and FLACDecoder.cpp
+void C2SoftFlacDec::process(
+ const std::unique_ptr<C2Work> &work,
+ const std::shared_ptr<C2BlockPool> &pool) {
+ // Initialize output work
+ work->result = C2_OK;
+ work->workletsProcessed = 1u;
+ work->worklets.front()->output.configUpdate.clear();
+ work->worklets.front()->output.flags = work->input.flags;
+
+ if (mSignalledError || mSignalledOutputEos) {
+ work->result = C2_BAD_VALUE;
+ return;
+ }
+
+ C2ReadView rView = mDummyReadView;
+ size_t inOffset = 0u;
+ size_t inSize = 0u;
+ if (!work->input.buffers.empty()) {
+ rView = work->input.buffers[0]->data().linearBlocks().front().map().get();
+ inSize = rView.capacity();
+ if (inSize && rView.error()) {
+ ALOGE("read view map failed %d", rView.error());
+ work->result = C2_CORRUPTED;
+ return;
+ }
+ }
+ bool eos = (work->input.flags & C2FrameData::FLAG_END_OF_STREAM) != 0;
+ bool codecConfig = (work->input.flags & C2FrameData::FLAG_CODEC_CONFIG) != 0;
+
+ ALOGV("in buffer attr. size %zu timestamp %d frameindex %d", inSize,
+ (int)work->input.ordinal.timestamp.peeku(), (int)work->input.ordinal.frameIndex.peeku());
+
+ if (inSize == 0) {
+ fillEmptyWork(work);
+ if (eos) {
+ mSignalledOutputEos = true;
+ ALOGV("signalled EOS");
+ }
+ return;
+ }
+
+ if (mInputBufferCount == 0 && !codecConfig) {
+ ALOGV("First frame has to include configuration, forcing config");
+ codecConfig = true;
+ }
+
+ uint8_t *input = const_cast<uint8_t *>(rView.data() + inOffset);
+ if (codecConfig) {
+ status_t decoderErr = mFLACDecoder->parseMetadata(input, inSize);
+ if (decoderErr != OK && decoderErr != WOULD_BLOCK) {
+ ALOGE("process: FLACDecoder parseMetaData returns error %d", decoderErr);
+ mSignalledError = true;
+ work->result = C2_CORRUPTED;
+ return;
+ }
+
+ mInputBufferCount++;
+ fillEmptyWork(work);
+ if (eos) {
+ mSignalledOutputEos = true;
+ ALOGV("signalled EOS");
+ }
+
+ if (decoderErr == WOULD_BLOCK) {
+ ALOGV("process: parseMetadata is Blocking, Continue %d", decoderErr);
+ } else {
+ mStreamInfo = mFLACDecoder->getStreamInfo();
+ if (mStreamInfo.sample_rate && mStreamInfo.max_blocksize &&
+ mStreamInfo.channels) {
+ mHasStreamInfo = true;
+ C2StreamSampleRateInfo::output sampleRateInfo(
+ 0u, mStreamInfo.sample_rate);
+ C2StreamChannelCountInfo::output channelCountInfo(
+ 0u, mStreamInfo.channels);
+ std::vector<std::unique_ptr<C2SettingResult>> failures;
+ c2_status_t err =
+ mIntf->config({&sampleRateInfo, &channelCountInfo},
+ C2_MAY_BLOCK, &failures);
+ if (err == OK) {
+ work->worklets.front()->output.configUpdate.push_back(
+ C2Param::Copy(sampleRateInfo));
+ work->worklets.front()->output.configUpdate.push_back(
+ C2Param::Copy(channelCountInfo));
+ } else {
+ ALOGE("Config Update failed");
+ mSignalledError = true;
+ work->result = C2_CORRUPTED;
+ return;
+ }
+ }
+ ALOGD("process: decoder configuration : %d Hz, %d channels, %d samples,"
+ " %d block size", mStreamInfo.sample_rate, mStreamInfo.channels,
+ (int)mStreamInfo.total_samples, mStreamInfo.max_blocksize);
+ }
+ return;
+ }
+
+ size_t outSize;
+ if (mHasStreamInfo)
+ outSize = mStreamInfo.max_blocksize * mStreamInfo.channels * sizeof(short);
+ else
+ outSize = kMaxBlockSize * FLACDecoder::kMaxChannels * sizeof(short);
+
+ std::shared_ptr<C2LinearBlock> block;
+ C2MemoryUsage usage = { C2MemoryUsage::CPU_READ, C2MemoryUsage::CPU_WRITE };
+ c2_status_t err = pool->fetchLinearBlock(outSize, usage, &block);
+ if (err != C2_OK) {
+ ALOGE("fetchLinearBlock for Output failed with status %d", err);
+ work->result = C2_NO_MEMORY;
+ return;
+ }
+ C2WriteView wView = block->map().get();
+ if (wView.error()) {
+ ALOGE("write view map failed %d", wView.error());
+ work->result = C2_CORRUPTED;
+ return;
+ }
+
+ short *output = reinterpret_cast<short *>(wView.data());
+ status_t decoderErr = mFLACDecoder->decodeOneFrame(
+ input, inSize, output, &outSize);
+ if (decoderErr != OK) {
+ ALOGE("process: FLACDecoder decodeOneFrame returns error %d", decoderErr);
+ mSignalledError = true;
+ work->result = C2_CORRUPTED;
+ return;
+ }
+
+ mInputBufferCount++;
+ ALOGV("out buffer attr. size %zu", outSize);
+ work->worklets.front()->output.flags = work->input.flags;
+ work->worklets.front()->output.buffers.clear();
+ work->worklets.front()->output.buffers.push_back(createLinearBuffer(block, 0, outSize));
+ work->worklets.front()->output.ordinal = work->input.ordinal;
+ if (eos) {
+ mSignalledOutputEos = true;
+ ALOGV("signalled EOS");
+ }
+}
+
+c2_status_t C2SoftFlacDec::drain(
+ uint32_t drainMode,
+ const std::shared_ptr<C2BlockPool> &pool) {
+ (void) pool;
+ if (drainMode == NO_DRAIN) {
+ ALOGW("drain with NO_DRAIN: no-op");
+ return C2_OK;
+ }
+ if (drainMode == DRAIN_CHAIN) {
+ ALOGW("DRAIN_CHAIN not supported");
+ return C2_OMITTED;
+ }
+
+ if (mFLACDecoder) mFLACDecoder->flush();
+
+ return C2_OK;
+}
+
+class C2SoftFlacDecFactory : public C2ComponentFactory {
+public:
+ C2SoftFlacDecFactory() : mHelper(std::static_pointer_cast<C2ReflectorHelper>(
+ GetCodec2PlatformComponentStore()->getParamReflector())) {
+ }
+
+ virtual c2_status_t createComponent(
+ c2_node_id_t id,
+ std::shared_ptr<C2Component>* const component,
+ std::function<void(C2Component*)> deleter) override {
+ *component = std::shared_ptr<C2Component>(
+ new C2SoftFlacDec(COMPONENT_NAME,
+ id,
+ std::make_shared<C2SoftFlacDec::IntfImpl>(mHelper)),
+ deleter);
+ return C2_OK;
+ }
+
+ virtual c2_status_t createInterface(
+ c2_node_id_t id,
+ std::shared_ptr<C2ComponentInterface>* const interface,
+ std::function<void(C2ComponentInterface*)> deleter) override {
+ *interface = std::shared_ptr<C2ComponentInterface>(
+ new SimpleInterface<C2SoftFlacDec::IntfImpl>(
+ COMPONENT_NAME, id, std::make_shared<C2SoftFlacDec::IntfImpl>(mHelper)),
+ deleter);
+ return C2_OK;
+ }
+
+ virtual ~C2SoftFlacDecFactory() override = default;
+
+private:
+ std::shared_ptr<C2ReflectorHelper> mHelper;
+};
+
+} // namespace android
+
+extern "C" ::C2ComponentFactory* CreateCodec2Factory() {
+ ALOGV("in %s", __func__);
+ return new ::android::C2SoftFlacDecFactory();
+}
+
+extern "C" void DestroyCodec2Factory(::C2ComponentFactory* factory) {
+ ALOGV("in %s", __func__);
+ delete factory;
+}
diff --git a/media/codec2/components/flac/C2SoftFlacDec.h b/media/codec2/components/flac/C2SoftFlacDec.h
new file mode 100644
index 0000000..b491bfd
--- /dev/null
+++ b/media/codec2/components/flac/C2SoftFlacDec.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2018 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.
+ */
+
+#ifndef ANDROID_C2_SOFT_FLAC_DEC_H_
+#define ANDROID_C2_SOFT_FLAC_DEC_H_
+
+#include <SimpleC2Component.h>
+
+#include "FLACDecoder.h"
+
+namespace android {
+
+struct C2SoftFlacDec : public SimpleC2Component {
+ class IntfImpl;
+
+ C2SoftFlacDec(const char *name, c2_node_id_t id,
+ const std::shared_ptr<IntfImpl> &intfImpl);
+ virtual ~C2SoftFlacDec();
+
+ // From SimpleC2Component
+ c2_status_t onInit() override;
+ c2_status_t onStop() override;
+ void onReset() override;
+ void onRelease() override;
+ c2_status_t onFlush_sm() override;
+ void process(
+ const std::unique_ptr<C2Work> &work,
+ const std::shared_ptr<C2BlockPool> &pool) override;
+ c2_status_t drain(
+ uint32_t drainMode,
+ const std::shared_ptr<C2BlockPool> &pool) override;
+
+private:
+ enum {
+ kMaxBlockSize = 4096
+ };
+
+ std::shared_ptr<IntfImpl> mIntf;
+ FLACDecoder *mFLACDecoder;
+ FLAC__StreamMetadata_StreamInfo mStreamInfo;
+ bool mSignalledError;
+ bool mSignalledOutputEos;
+ bool mHasStreamInfo;
+ size_t mInputBufferCount;
+
+ status_t initDecoder();
+
+ C2_DO_NOT_COPY(C2SoftFlacDec);
+};
+
+} // namespace android
+
+#endif // ANDROID_C2_SOFT_FLAC_DEC_H_
diff --git a/media/codec2/components/flac/C2SoftFlacEnc.cpp b/media/codec2/components/flac/C2SoftFlacEnc.cpp
new file mode 100644
index 0000000..e4192c7
--- /dev/null
+++ b/media/codec2/components/flac/C2SoftFlacEnc.cpp
@@ -0,0 +1,460 @@
+/*
+ * Copyright (C) 2018 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.
+ */
+
+//#define LOG_NDEBUG 0
+#define LOG_TAG "C2SoftFlacEnc"
+#include <log/log.h>
+
+#include <media/stagefright/foundation/MediaDefs.h>
+
+#include <C2PlatformSupport.h>
+#include <SimpleC2Interface.h>
+
+#include "C2SoftFlacEnc.h"
+
+namespace android {
+
+class C2SoftFlacEnc::IntfImpl : public C2InterfaceHelper {
+public:
+ explicit IntfImpl(const std::shared_ptr<C2ReflectorHelper> &helper)
+ : C2InterfaceHelper(helper) {
+ setDerivedInstance(this);
+ addParameter(
+ DefineParam(mInputFormat, C2_NAME_INPUT_STREAM_FORMAT_SETTING)
+ .withConstValue(new C2StreamFormatConfig::input(0u, C2FormatAudio))
+ .build());
+ addParameter(
+ DefineParam(mOutputFormat, C2_NAME_OUTPUT_STREAM_FORMAT_SETTING)
+ .withConstValue(new C2StreamFormatConfig::output(0u, C2FormatCompressed))
+ .build());
+ addParameter(
+ DefineParam(mInputMediaType, C2_NAME_INPUT_PORT_MIME_SETTING)
+ .withConstValue(AllocSharedString<C2PortMimeConfig::input>(
+ MEDIA_MIMETYPE_AUDIO_RAW))
+ .build());
+ addParameter(
+ DefineParam(mOutputMediaType, C2_NAME_OUTPUT_PORT_MIME_SETTING)
+ .withConstValue(AllocSharedString<C2PortMimeConfig::output>(
+ MEDIA_MIMETYPE_AUDIO_FLAC))
+ .build());
+ addParameter(
+ DefineParam(mSampleRate, C2_NAME_STREAM_SAMPLE_RATE_SETTING)
+ .withDefault(new C2StreamSampleRateInfo::input(0u, 44100))
+ .withFields({C2F(mSampleRate, value).inRange(1, 655350)})
+ .withSetter((Setter<decltype(*mSampleRate)>::StrictValueWithNoDeps))
+ .build());
+ addParameter(
+ DefineParam(mChannelCount, C2_NAME_STREAM_CHANNEL_COUNT_SETTING)
+ .withDefault(new C2StreamChannelCountInfo::input(0u, 1))
+ .withFields({C2F(mChannelCount, value).inRange(1, 2)})
+ .withSetter(Setter<decltype(*mChannelCount)>::StrictValueWithNoDeps)
+ .build());
+ addParameter(
+ DefineParam(mBitrate, C2_NAME_STREAM_BITRATE_SETTING)
+ .withDefault(new C2BitrateTuning::output(0u, 768000))
+ .withFields({C2F(mBitrate, value).inRange(1, 21000000)})
+ .withSetter(Setter<decltype(*mBitrate)>::NonStrictValueWithNoDeps)
+ .build());
+ addParameter(
+ DefineParam(mInputMaxBufSize, C2_PARAMKEY_INPUT_MAX_BUFFER_SIZE)
+ .withConstValue(new C2StreamMaxBufferSizeInfo::input(0u, 4608))
+ .build());
+ }
+
+ uint32_t getSampleRate() const { return mSampleRate->value; }
+ uint32_t getChannelCount() const { return mChannelCount->value; }
+ uint32_t getBitrate() const { return mBitrate->value; }
+
+private:
+ std::shared_ptr<C2StreamFormatConfig::input> mInputFormat;
+ std::shared_ptr<C2StreamFormatConfig::output> mOutputFormat;
+ std::shared_ptr<C2PortMimeConfig::input> mInputMediaType;
+ std::shared_ptr<C2PortMimeConfig::output> mOutputMediaType;
+ std::shared_ptr<C2StreamSampleRateInfo::input> mSampleRate;
+ std::shared_ptr<C2StreamChannelCountInfo::input> mChannelCount;
+ std::shared_ptr<C2BitrateTuning::output> mBitrate;
+ std::shared_ptr<C2StreamMaxBufferSizeInfo::input> mInputMaxBufSize;
+};
+constexpr char COMPONENT_NAME[] = "c2.android.flac.encoder";
+
+C2SoftFlacEnc::C2SoftFlacEnc(
+ const char *name,
+ c2_node_id_t id,
+ const std::shared_ptr<IntfImpl> &intfImpl)
+ : SimpleC2Component(std::make_shared<SimpleInterface<IntfImpl>>(name, id, intfImpl)),
+ mIntf(intfImpl),
+ mFlacStreamEncoder(nullptr),
+ mInputBufferPcm32(nullptr) {
+}
+
+C2SoftFlacEnc::~C2SoftFlacEnc() {
+ onRelease();
+}
+
+c2_status_t C2SoftFlacEnc::onInit() {
+ mFlacStreamEncoder = FLAC__stream_encoder_new();
+ if (!mFlacStreamEncoder) return C2_CORRUPTED;
+
+ mInputBufferPcm32 = (FLAC__int32*) malloc(
+ kInBlockSize * kMaxNumChannels * sizeof(FLAC__int32));
+ if (!mInputBufferPcm32) return C2_NO_MEMORY;
+
+ mSignalledError = false;
+ mSignalledOutputEos = false;
+ mCompressionLevel = FLAC_COMPRESSION_LEVEL_DEFAULT;
+ mIsFirstFrame = true;
+ mAnchorTimeStamp = 0ull;
+ mProcessedSamples = 0u;
+ mEncoderWriteData = false;
+ mEncoderReturnedNbBytes = 0;
+ mHeaderOffset = 0;
+ mWroteHeader = false;
+
+ status_t err = configureEncoder();
+ return err == OK ? C2_OK : C2_CORRUPTED;
+}
+
+void C2SoftFlacEnc::onRelease() {
+ if (mFlacStreamEncoder) {
+ FLAC__stream_encoder_delete(mFlacStreamEncoder);
+ mFlacStreamEncoder = nullptr;
+ }
+
+ if (mInputBufferPcm32) {
+ free(mInputBufferPcm32);
+ mInputBufferPcm32 = nullptr;
+ }
+}
+
+void C2SoftFlacEnc::onReset() {
+ mCompressionLevel = FLAC_COMPRESSION_LEVEL_DEFAULT;
+ (void) onStop();
+}
+
+c2_status_t C2SoftFlacEnc::onStop() {
+ mSignalledError = false;
+ mSignalledOutputEos = false;
+ mIsFirstFrame = true;
+ mAnchorTimeStamp = 0ull;
+ mProcessedSamples = 0u;
+ mEncoderWriteData = false;
+ mEncoderReturnedNbBytes = 0;
+ mHeaderOffset = 0;
+ mWroteHeader = false;
+
+ c2_status_t status = drain(DRAIN_COMPONENT_NO_EOS, nullptr);
+ if (C2_OK != status) return status;
+
+ status_t err = configureEncoder();
+ if (err != OK) mSignalledError = true;
+ return C2_OK;
+}
+
+c2_status_t C2SoftFlacEnc::onFlush_sm() {
+ return onStop();
+}
+
+static void fillEmptyWork(const std::unique_ptr<C2Work> &work) {
+ work->worklets.front()->output.flags = work->input.flags;
+ work->worklets.front()->output.buffers.clear();
+ work->worklets.front()->output.ordinal = work->input.ordinal;
+}
+
+void C2SoftFlacEnc::process(
+ const std::unique_ptr<C2Work> &work,
+ const std::shared_ptr<C2BlockPool> &pool) {
+ // Initialize output work
+ work->result = C2_OK;
+ work->workletsProcessed = 1u;
+ work->worklets.front()->output.flags = work->input.flags;
+
+ if (mSignalledError || mSignalledOutputEos) {
+ work->result = C2_BAD_VALUE;
+ return;
+ }
+
+ bool eos = ((work->input.flags & C2FrameData::FLAG_END_OF_STREAM) != 0);
+ C2ReadView rView = mDummyReadView;
+ size_t inOffset = 0u;
+ size_t inSize = 0u;
+ if (!work->input.buffers.empty()) {
+ rView = work->input.buffers[0]->data().linearBlocks().front().map().get();
+ inSize = rView.capacity();
+ if (inSize && rView.error()) {
+ ALOGE("read view map failed %d", rView.error());
+ work->result = C2_CORRUPTED;
+ return;
+ }
+ }
+
+ ALOGV("in buffer attr. size %zu timestamp %d frameindex %d, flags %x",
+ inSize, (int)work->input.ordinal.timestamp.peeku(),
+ (int)work->input.ordinal.frameIndex.peeku(), work->input.flags);
+ if (mIsFirstFrame && inSize) {
+ mAnchorTimeStamp = work->input.ordinal.timestamp.peekull();
+ mIsFirstFrame = false;
+ }
+
+ if (!mWroteHeader) {
+ std::unique_ptr<C2StreamCsdInfo::output> csd =
+ C2StreamCsdInfo::output::AllocUnique(mHeaderOffset, 0u);
+ if (!csd) {
+ ALOGE("CSD allocation failed");
+ mSignalledError = true;
+ work->result = C2_NO_MEMORY;
+ return;
+ }
+ memcpy(csd->m.value, mHeader, mHeaderOffset);
+ ALOGV("put csd, %d bytes", mHeaderOffset);
+
+ work->worklets.front()->output.configUpdate.push_back(std::move(csd));
+ mWroteHeader = true;
+ }
+
+ uint32_t sampleRate = mIntf->getSampleRate();
+ uint32_t channelCount = mIntf->getChannelCount();
+ uint64_t outTimeStamp = mProcessedSamples * 1000000ll / sampleRate;
+
+ size_t outCapacity = inSize;
+ outCapacity += mBlockSize * channelCount * sizeof(int16_t);
+
+ C2MemoryUsage usage = { C2MemoryUsage::CPU_READ, C2MemoryUsage::CPU_WRITE };
+ c2_status_t err = pool->fetchLinearBlock(outCapacity, usage, &mOutputBlock);
+ if (err != C2_OK) {
+ ALOGE("fetchLinearBlock for Output failed with status %d", err);
+ work->result = C2_NO_MEMORY;
+ return;
+ }
+ C2WriteView wView = mOutputBlock->map().get();
+ if (wView.error()) {
+ ALOGE("write view map failed %d", wView.error());
+ work->result = C2_CORRUPTED;
+ return;
+ }
+
+ mEncoderWriteData = true;
+ mEncoderReturnedNbBytes = 0;
+ size_t inPos = 0;
+ while (inPos < inSize) {
+ const uint8_t *inPtr = rView.data() + inOffset;
+ size_t processSize = MIN(kInBlockSize * channelCount * sizeof(int16_t), (inSize - inPos));
+ const unsigned nbInputFrames = processSize / (channelCount * sizeof(int16_t));
+ const unsigned nbInputSamples = processSize / sizeof(int16_t);
+ const int16_t *pcm16 = reinterpret_cast<const int16_t *>(inPtr + inPos);
+ ALOGV("about to encode %zu bytes", processSize);
+
+ for (unsigned i = 0; i < nbInputSamples; i++) {
+ mInputBufferPcm32[i] = (FLAC__int32) pcm16[i];
+ }
+
+ FLAC__bool ok = FLAC__stream_encoder_process_interleaved(
+ mFlacStreamEncoder, mInputBufferPcm32, nbInputFrames);
+ if (!ok) {
+ ALOGE("error encountered during encoding");
+ mSignalledError = true;
+ work->result = C2_CORRUPTED;
+ mOutputBlock.reset();
+ return;
+ }
+ inPos += processSize;
+ }
+ if (eos && (C2_OK != drain(DRAIN_COMPONENT_WITH_EOS, pool))) {
+ ALOGE("error encountered during encoding");
+ mSignalledError = true;
+ work->result = C2_CORRUPTED;
+ mOutputBlock.reset();
+ return;
+ }
+ fillEmptyWork(work);
+ if (mEncoderReturnedNbBytes != 0) {
+ std::shared_ptr<C2Buffer> buffer = createLinearBuffer(std::move(mOutputBlock), 0, mEncoderReturnedNbBytes);
+ work->worklets.front()->output.buffers.push_back(buffer);
+ work->worklets.front()->output.ordinal.timestamp = mAnchorTimeStamp + outTimeStamp;
+ } else {
+ ALOGV("encoder process_interleaved returned without data to write");
+ }
+ mOutputBlock = nullptr;
+ if (eos) {
+ mSignalledOutputEos = true;
+ ALOGV("signalled EOS");
+ }
+ mEncoderWriteData = false;
+ mEncoderReturnedNbBytes = 0;
+}
+
+FLAC__StreamEncoderWriteStatus C2SoftFlacEnc::onEncodedFlacAvailable(
+ const FLAC__byte buffer[], size_t bytes, unsigned samples,
+ unsigned current_frame) {
+ (void) current_frame;
+ ALOGV("%s (bytes=%zu, samples=%u, curr_frame=%u)", __func__, bytes, samples,
+ current_frame);
+
+ if (samples == 0) {
+ ALOGI("saving %zu bytes of header", bytes);
+ memcpy(mHeader + mHeaderOffset, buffer, bytes);
+ mHeaderOffset += bytes;// will contain header size when finished receiving header
+ return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
+ }
+
+ if ((samples == 0) || !mEncoderWriteData) {
+ // called by the encoder because there's header data to save, but it's not the role
+ // of this component (unless WRITE_FLAC_HEADER_IN_FIRST_BUFFER is defined)
+ ALOGV("ignoring %zu bytes of header data (samples=%d)", bytes, samples);
+ return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
+ }
+
+ // write encoded data
+ C2WriteView wView = mOutputBlock->map().get();
+ uint8_t* outData = wView.data();
+ ALOGV("writing %zu bytes of encoded data on output", bytes);
+ // increment mProcessedSamples to maintain audio synchronization during
+ // play back
+ mProcessedSamples += samples;
+ if (bytes + mEncoderReturnedNbBytes > mOutputBlock->capacity()) {
+ ALOGE("not enough space left to write encoded data, dropping %zu bytes", bytes);
+ // a fatal error would stop the encoding
+ return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
+ }
+ memcpy(outData + mEncoderReturnedNbBytes, buffer, bytes);
+ mEncoderReturnedNbBytes += bytes;
+ return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
+}
+
+
+status_t C2SoftFlacEnc::configureEncoder() {
+ ALOGV("%s numChannel=%d, sampleRate=%d", __func__, mIntf->getChannelCount(), mIntf->getSampleRate());
+
+ if (mSignalledError || !mFlacStreamEncoder) {
+ ALOGE("can't configure encoder: no encoder or invalid state");
+ return UNKNOWN_ERROR;
+ }
+
+ FLAC__bool ok = true;
+ ok = ok && FLAC__stream_encoder_set_channels(mFlacStreamEncoder, mIntf->getChannelCount());
+ ok = ok && FLAC__stream_encoder_set_sample_rate(mFlacStreamEncoder, mIntf->getSampleRate());
+ ok = ok && FLAC__stream_encoder_set_bits_per_sample(mFlacStreamEncoder, 16);
+ ok = ok && FLAC__stream_encoder_set_compression_level(mFlacStreamEncoder, mCompressionLevel);
+ ok = ok && FLAC__stream_encoder_set_verify(mFlacStreamEncoder, false);
+ if (!ok) {
+ ALOGE("unknown error when configuring encoder");
+ return UNKNOWN_ERROR;
+ }
+
+ ok &= FLAC__STREAM_ENCODER_INIT_STATUS_OK ==
+ FLAC__stream_encoder_init_stream(mFlacStreamEncoder,
+ flacEncoderWriteCallback /*write_callback*/,
+ nullptr /*seek_callback*/,
+ nullptr /*tell_callback*/,
+ nullptr /*metadata_callback*/,
+ (void *) this /*client_data*/);
+
+ if (!ok) {
+ ALOGE("unknown error when configuring encoder");
+ return UNKNOWN_ERROR;
+ }
+
+ mBlockSize = FLAC__stream_encoder_get_blocksize(mFlacStreamEncoder);
+
+ ALOGV("encoder successfully configured");
+ return OK;
+}
+
+FLAC__StreamEncoderWriteStatus C2SoftFlacEnc::flacEncoderWriteCallback(
+ const FLAC__StreamEncoder *,
+ const FLAC__byte buffer[],
+ size_t bytes,
+ unsigned samples,
+ unsigned current_frame,
+ void *client_data) {
+ return ((C2SoftFlacEnc*) client_data)->onEncodedFlacAvailable(
+ buffer, bytes, samples, current_frame);
+}
+
+c2_status_t C2SoftFlacEnc::drain(
+ uint32_t drainMode,
+ const std::shared_ptr<C2BlockPool> &pool) {
+ (void) pool;
+ switch (drainMode) {
+ case NO_DRAIN:
+ ALOGW("drain with NO_DRAIN: no-op");
+ return C2_OK;
+ case DRAIN_CHAIN:
+ ALOGW("DRAIN_CHAIN not supported");
+ return C2_OMITTED;
+ case DRAIN_COMPONENT_WITH_EOS:
+ // TODO: This flag is not being sent back to the client
+ // because there are no items in PendingWork queue as all the
+ // inputs are being sent back with emptywork or valid encoded data
+ // mSignalledOutputEos = true;
+ case DRAIN_COMPONENT_NO_EOS:
+ break;
+ default:
+ return C2_BAD_VALUE;
+ }
+ FLAC__bool ok = FLAC__stream_encoder_finish(mFlacStreamEncoder);
+ if (!ok) return C2_CORRUPTED;
+ mIsFirstFrame = true;
+ mAnchorTimeStamp = 0ull;
+ mProcessedSamples = 0u;
+
+ return C2_OK;
+}
+
+class C2SoftFlacEncFactory : public C2ComponentFactory {
+public:
+ C2SoftFlacEncFactory() : mHelper(std::static_pointer_cast<C2ReflectorHelper>(
+ GetCodec2PlatformComponentStore()->getParamReflector())) {
+ }
+
+ virtual c2_status_t createComponent(
+ c2_node_id_t id,
+ std::shared_ptr<C2Component>* const component,
+ std::function<void(C2Component*)> deleter) override {
+ *component = std::shared_ptr<C2Component>(
+ new C2SoftFlacEnc(COMPONENT_NAME,
+ id,
+ std::make_shared<C2SoftFlacEnc::IntfImpl>(mHelper)),
+ deleter);
+ return C2_OK;
+ }
+
+ virtual c2_status_t createInterface(
+ c2_node_id_t id,
+ std::shared_ptr<C2ComponentInterface>* const interface,
+ std::function<void(C2ComponentInterface*)> deleter) override {
+ *interface = std::shared_ptr<C2ComponentInterface>(
+ new SimpleInterface<C2SoftFlacEnc::IntfImpl>(
+ COMPONENT_NAME, id, std::make_shared<C2SoftFlacEnc::IntfImpl>(mHelper)),
+ deleter);
+ return C2_OK;
+ }
+
+ virtual ~C2SoftFlacEncFactory() override = default;
+private:
+ std::shared_ptr<C2ReflectorHelper> mHelper;
+};
+
+} // namespace android
+
+extern "C" ::C2ComponentFactory* CreateCodec2Factory() {
+ ALOGV("in %s", __func__);
+ return new ::android::C2SoftFlacEncFactory();
+}
+
+extern "C" void DestroyCodec2Factory(::C2ComponentFactory* factory) {
+ ALOGV("in %s", __func__);
+ delete factory;
+}
diff --git a/media/codec2/components/flac/C2SoftFlacEnc.h b/media/codec2/components/flac/C2SoftFlacEnc.h
new file mode 100644
index 0000000..cdf305e
--- /dev/null
+++ b/media/codec2/components/flac/C2SoftFlacEnc.h
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2018 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.
+ */
+
+#ifndef ANDROID_C2_SOFT_FLAC_ENC_H_
+#define ANDROID_C2_SOFT_FLAC_ENC_H_
+
+#include <SimpleC2Component.h>
+
+#include "FLAC/stream_encoder.h"
+
+#define FLAC_COMPRESSION_LEVEL_MIN 0
+#define FLAC_COMPRESSION_LEVEL_DEFAULT 5
+#define FLAC_COMPRESSION_LEVEL_MAX 8
+
+#define FLAC_HEADER_SIZE 128
+
+#define MIN(a, b) (((a) < (b)) ? (a) : (b))
+
+namespace android {
+
+class C2SoftFlacEnc : public SimpleC2Component {
+public:
+ class IntfImpl;
+
+ C2SoftFlacEnc(const char *name, c2_node_id_t id, const std::shared_ptr<IntfImpl> &intfImpl);
+ virtual ~C2SoftFlacEnc();
+
+ // From SimpleC2Component
+ c2_status_t onInit() override;
+ c2_status_t onStop() override;
+ void onReset() override;
+ void onRelease() override;
+ c2_status_t onFlush_sm() override;
+ void process(
+ const std::unique_ptr<C2Work> &work,
+ const std::shared_ptr<C2BlockPool> &pool) override;
+ c2_status_t drain(
+ uint32_t drainMode,
+ const std::shared_ptr<C2BlockPool> &pool) override;
+
+private:
+ status_t configureEncoder();
+ static FLAC__StreamEncoderWriteStatus flacEncoderWriteCallback(
+ const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[],
+ size_t bytes, unsigned samples, unsigned current_frame,
+ void *client_data);
+ FLAC__StreamEncoderWriteStatus onEncodedFlacAvailable(
+ const FLAC__byte buffer[], size_t bytes, unsigned samples,
+ unsigned current_frame);
+
+ std::shared_ptr<IntfImpl> mIntf;
+ const unsigned int kInBlockSize = 1152;
+ const unsigned int kMaxNumChannels = 2;
+ FLAC__StreamEncoder* mFlacStreamEncoder;
+ FLAC__int32* mInputBufferPcm32;
+ std::shared_ptr<C2LinearBlock> mOutputBlock;
+ bool mSignalledError;
+ bool mSignalledOutputEos;
+ uint32_t mCompressionLevel;
+ uint32_t mBlockSize;
+ bool mIsFirstFrame;
+ uint64_t mAnchorTimeStamp;
+ uint64_t mProcessedSamples;
+ // should the data received by the callback be written to the output port
+ bool mEncoderWriteData;
+ size_t mEncoderReturnedNbBytes;
+ unsigned mHeaderOffset;
+ bool mWroteHeader;
+ char mHeader[FLAC_HEADER_SIZE];
+
+ C2_DO_NOT_COPY(C2SoftFlacEnc);
+};
+
+} // namespace android
+
+#endif // ANDROID_C2_SOFT_FLAC_ENC_H_
diff --git a/media/codec2/components/flac/MODULE_LICENSE_APACHE2 b/media/codec2/components/flac/MODULE_LICENSE_APACHE2
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/media/codec2/components/flac/MODULE_LICENSE_APACHE2
diff --git a/media/codec2/components/flac/NOTICE b/media/codec2/components/flac/NOTICE
new file mode 100644
index 0000000..c5b1efa
--- /dev/null
+++ b/media/codec2/components/flac/NOTICE
@@ -0,0 +1,190 @@
+
+ Copyright (c) 2005-2008, 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.
+
+ 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.
+
+
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
+ and distribution as defined by Sections 1 through 9 of this document.
+
+ "Licensor" shall mean the copyright owner or entity authorized by
+ the copyright owner that is granting the License.
+
+ "Legal Entity" shall mean the union of the acting entity and all
+ other entities that control, are controlled by, or are under common
+ control with that entity. For the purposes of this definition,
+ "control" means (i) the power, direct or indirect, to cause the
+ direction or management of such entity, whether by contract or
+ otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ outstanding shares, or (iii) beneficial ownership of such entity.
+
+ "You" (or "Your") shall mean an individual or Legal Entity
+ exercising permissions granted by this License.
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+ "Source" form shall mean the preferred form for making modifications,
+ including but not limited to software source code, documentation
+ source, and configuration files.
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+ "Object" form shall mean any form resulting from mechanical
+ transformation or translation of a Source form, including but
+ not limited to compiled object code, generated documentation,
+ and conversions to other media types.
+
+ "Work" shall mean the work of authorship, whether in Source or
+ Object form, made available under the License, as indicated by a
+ copyright notice that is included in or attached to the work
+ (an example is provided in the Appendix below).
+
+ "Derivative Works" shall mean any work, whether in Source or Object
+ form, that is based on (or derived from) the Work and for which the
+ editorial revisions, annotations, elaborations, or other modifications
+ represent, as a whole, an original work of authorship. For the purposes
+ of this License, Derivative Works shall not include works that remain
+ separable from, or merely link (or bind by name) to the interfaces of,
+ the Work and Derivative Works thereof.
+
+ "Contribution" shall mean any work of authorship, including
+ the original version of the Work and any modifications or additions
+ to that Work or Derivative Works thereof, that is intentionally
+ submitted to Licensor for inclusion in the Work by the copyright owner
+ or by an individual or Legal Entity authorized to submit on behalf of
+ the copyright owner. For the purposes of this definition, "submitted"
+ means any form of electronic, verbal, or written communication sent
+ to the Licensor or its representatives, including but not limited to
+ communication on electronic mailing lists, source code control systems,
+ and issue tracking systems that are managed by, or on behalf of, the
+ Licensor for the purpose of discussing and improving the Work, but
+ excluding communication that is conspicuously marked or otherwise
+ designated in writing by the copyright owner as "Not a Contribution."
+
+ "Contributor" shall mean Licensor and any individual or Legal Entity
+ on behalf of whom a Contribution has been received by Licensor and
+ subsequently incorporated within the Work.
+
+ 2. Grant of Copyright License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ copyright license to reproduce, prepare Derivative Works of,
+ publicly display, publicly perform, sublicense, and distribute the
+ Work and such Derivative Works in Source or Object form.
+
+ 3. Grant of Patent License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ (except as stated in this section) patent license to make, have made,
+ use, offer to sell, sell, import, and otherwise transfer the Work,
+ where such license applies only to those patent claims licensable
+ by such Contributor that are necessarily infringed by their
+ Contribution(s) alone or by combination of their Contribution(s)
+ with the Work to which such Contribution(s) was submitted. If You
+ institute patent litigation against any entity (including a
+ cross-claim or counterclaim in a lawsuit) alleging that the Work
+ or a Contribution incorporated within the Work constitutes direct
+ or contributory patent infringement, then any patent licenses
+ granted to You under this License for that Work shall terminate
+ as of the date such litigation is filed.
+
+ 4. Redistribution. You may reproduce and distribute copies of the
+ Work or Derivative Works thereof in any medium, with or without
+ modifications, and in Source or Object form, provided that You
+ meet the following conditions:
+
+ (a) You must give any other recipients of the Work or
+ Derivative Works a copy of this License; and
+
+ (b) You must cause any modified files to carry prominent notices
+ stating that You changed the files; and
+
+ (c) You must retain, in the Source form of any Derivative Works
+ that You distribute, all copyright, patent, trademark, and
+ attribution notices from the Source form of the Work,
+ excluding those notices that do not pertain to any part of
+ the Derivative Works; and
+
+ (d) If the Work includes a "NOTICE" text file as part of its
+ distribution, then any Derivative Works that You distribute must
+ include a readable copy of the attribution notices contained
+ within such NOTICE file, excluding those notices that do not
+ pertain to any part of the Derivative Works, in at least one
+ of the following places: within a NOTICE text file distributed
+ as part of the Derivative Works; within the Source form or
+ documentation, if provided along with the Derivative Works; or,
+ within a display generated by the Derivative Works, if and
+ wherever such third-party notices normally appear. The contents
+ of the NOTICE file are for informational purposes only and
+ do not modify the License. You may add Your own attribution
+ notices within Derivative Works that You distribute, alongside
+ or as an addendum to the NOTICE text from the Work, provided
+ that such additional attribution notices cannot be construed
+ as modifying the License.
+
+ You may add Your own copyright statement to Your modifications and
+ may provide additional or different license terms and conditions
+ for use, reproduction, or distribution of Your modifications, or
+ for any such Derivative Works as a whole, provided Your use,
+ reproduction, and distribution of the Work otherwise complies with
+ the conditions stated in this License.
+
+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
+ this License, without any additional terms or conditions.
+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+ 6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
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+
+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
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+ of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ PARTICULAR PURPOSE. You are solely responsible for determining the
+ appropriateness of using or redistributing the Work and assume any
+ risks associated with Your exercise of permissions under this License.
+
+ 8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
+ unless required by applicable law (such as deliberate and grossly
+ negligent acts) or agreed to in writing, shall any Contributor be
+ liable to You for damages, including any direct, indirect, special,
+ incidental, or consequential damages of any character arising as a
+ result of this License or out of the use or inability to use the
+ Work (including but not limited to damages for loss of goodwill,
+ work stoppage, computer failure or malfunction, or any and all
+ other commercial damages or losses), even if such Contributor
+ has been advised of the possibility of such damages.
+
+ 9. Accepting Warranty or Additional Liability. While redistributing
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+ on Your own behalf and on Your sole responsibility, not on behalf
+ of any other Contributor, and only if You agree to indemnify,
+ defend, and hold each Contributor harmless for any liability
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+
+ END OF TERMS AND CONDITIONS
+