android-16.0

C2FFMPEGAudioDecodeComponent.h

@@ -0,0 +1,79 @@
+/*
+ * Copyright 2022 Michael Goffioul <michael.goffioul@gmail.com>
+ *
+ * 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 C2_FFMPEG_AUDIO_DECODE_COMPONENT_H
+#define C2_FFMPEG_AUDIO_DECODE_COMPONENT_H
+
+#include <SimpleC2Component.h>
+#include "C2FFMPEGCommon.h"
+#include "C2FFMPEGAudioDecodeInterface.h"
+
+namespace android {
+
+struct CodecHelper;
+
+class C2FFMPEGAudioDecodeComponent : public SimpleC2Component {
+public:
+    explicit C2FFMPEGAudioDecodeComponent(
+        const C2FFMPEGComponentInfo* componentInfo,
+        const std::shared_ptr<C2FFMPEGAudioDecodeInterface>& intf);
+    virtual ~C2FFMPEGAudioDecodeComponent();
+
+protected:
+    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:
+    c2_status_t initDecoder();
+    c2_status_t openDecoder();
+    void deInitDecoder();
+    c2_status_t processCodecConfig(C2ReadView* inBuffer);
+    c2_status_t sendInputBuffer(C2ReadView* inBuffer, int64_t timestamp);
+    c2_status_t receiveFrame(bool* hasFrame);
+    c2_status_t getOutputBuffer(C2WriteView* outBuffer);
+    void updateAudioParameters();
+
+private:
+    const C2FFMPEGComponentInfo* mInfo;
+    std::shared_ptr<C2FFMPEGAudioDecodeInterface> mIntf;
+    enum AVCodecID mCodecID;
+    AVCodecContext* mCtx;
+    AVFrame* mFrame;
+    AVPacket* mPacket;
+    bool mFFMPEGInitialized;
+    bool mCodecAlreadyOpened;
+    bool mEOSSignalled;
+    // Audio resampling
+    struct SwrContext* mSwrCtx;
+    enum AVSampleFormat mTargetSampleFormat;
+    int mTargetSampleRate;
+    int mTargetChannels;
+    // Misc
+    CodecHelper* mCodecHelper;
+};
+
+} // namespace android
+
+#endif // C2_FFMPEG_AUDIO_DECODE_COMPONENT_H