41 lines
1.5 KiB
C
41 lines
1.5 KiB
C
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#pragma once
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#include "../in_mp4/mpeg4audio.h"
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#include "incs/mp4AudioDecIfc.h"
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// {654B5212-018E-45f6-88CF-75862C85D99A}
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static const GUID mp4_aac_guid = { 0x654b5212, 0x18e, 0x45f6, { 0x88, 0xcf, 0x75, 0x86, 0x2c, 0x85, 0xd9, 0x9a } };
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class MP4AACDecoder : public MP4AudioDecoder
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{
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public:
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static const char *getServiceName() { return "AAC MP4 Decoder"; }
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static GUID getServiceGuid() { return mp4_aac_guid; }
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MP4AACDecoder();
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int Open();
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int OpenEx(size_t bits, size_t maxChannels, bool useFloat);
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void Close();
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int GetCurrentBitrate(unsigned int *bitrate);
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int AudioSpecificConfiguration(void *buffer, size_t buffer_size); // reads ASC block from mp4 file
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void Flush();
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int GetOutputProperties(unsigned int *sampleRate, unsigned int *channels, unsigned int *bitsPerSample);
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int GetOutputPropertiesEx(unsigned int *sampleRate, unsigned int *channels, unsigned int *bitsPerSample, bool *useFloat);
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int DecodeSample(void *inputBuffer, size_t inputBufferBytes, void *outputBuffer, size_t *outputBufferBytes);
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int OutputFrameSize(size_t *frameSize);
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int CanHandleCodec(const char *codecName);
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int CanHandleType(uint8_t type);
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int CanHandleMPEG4Type(uint8_t type);
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int SetGain(float _gain) { gain=_gain; return MP4_SUCCESS; }
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private:
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mp4AudioDecoderHandle decoder;
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CCompositionUnitPtr composition_unit; /* output */
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CAccessUnitPtr access_unit; /* input */
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size_t preDelay;
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unsigned int bitsPerSample;
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size_t maxChannels;
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bool isFloat;
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float gain;
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protected:
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RECVS_DISPATCH;
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};
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