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89 lines
2.8 KiB
89 lines
2.8 KiB
/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_C2_SOFT_FLAC_ENC_H_
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#define ANDROID_C2_SOFT_FLAC_ENC_H_
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#include <SimpleC2Component.h>
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#include "FLAC/stream_encoder.h"
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#define FLAC_COMPRESSION_LEVEL_MIN 0
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#define FLAC_COMPRESSION_LEVEL_DEFAULT 5
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#define FLAC_COMPRESSION_LEVEL_MAX 8
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#define FLAC_HEADER_SIZE 128
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#define MIN(a, b) (((a) < (b)) ? (a) : (b))
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namespace android {
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class C2SoftFlacEnc : public SimpleC2Component {
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public:
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class IntfImpl;
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C2SoftFlacEnc(const char *name, c2_node_id_t id, const std::shared_ptr<IntfImpl> &intfImpl);
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virtual ~C2SoftFlacEnc();
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// From SimpleC2Component
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c2_status_t onInit() override;
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c2_status_t onStop() override;
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void onReset() override;
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void onRelease() override;
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c2_status_t onFlush_sm() override;
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void process(
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const std::unique_ptr<C2Work> &work,
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const std::shared_ptr<C2BlockPool> &pool) override;
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c2_status_t drain(
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uint32_t drainMode,
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const std::shared_ptr<C2BlockPool> &pool) override;
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private:
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status_t configureEncoder();
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static FLAC__StreamEncoderWriteStatus flacEncoderWriteCallback(
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const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[],
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size_t bytes, unsigned samples, unsigned current_frame,
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void *client_data);
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FLAC__StreamEncoderWriteStatus onEncodedFlacAvailable(
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const FLAC__byte buffer[], size_t bytes, unsigned samples,
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unsigned current_frame);
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std::shared_ptr<IntfImpl> mIntf;
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const unsigned int kInBlockSize = 1152;
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const unsigned int kMaxNumChannels = 2;
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FLAC__StreamEncoder* mFlacStreamEncoder;
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FLAC__int32* mInputBufferPcm32;
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std::shared_ptr<C2LinearBlock> mOutputBlock;
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bool mSignalledError;
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bool mSignalledOutputEos;
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uint32_t mBlockSize;
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bool mIsFirstFrame;
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uint64_t mAnchorTimeStamp;
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uint64_t mProcessedSamples;
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// should the data received by the callback be written to the output port
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bool mEncoderWriteData;
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size_t mEncoderReturnedNbBytes;
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unsigned mHeaderOffset;
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bool mWroteHeader;
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char mHeader[FLAC_HEADER_SIZE];
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C2_DO_NOT_COPY(C2SoftFlacEnc);
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};
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} // namespace android
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#endif // ANDROID_C2_SOFT_FLAC_ENC_H_
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