95 lines
2.0 KiB
C++
95 lines
2.0 KiB
C++
#ifndef _DECODER_PLUGIN_H
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#define _DECODER_PLUGIN_H
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#include <MediaTrack.h>
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#include <MediaFormats.h>
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#include "MediaPlugin.h"
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namespace BCodecKit {
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namespace BPrivate {
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class PluginManager;
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}
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class BChunkProvider {
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public:
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BChunkProvider();
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virtual ~BChunkProvider();
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protected:
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friend class BDecoder;
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virtual status_t GetNextChunk(const void** chunkBuffer,
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size_t* chunkSize,
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media_header* mediaHeader) = 0;
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};
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class BDecoder {
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public:
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virtual void GetCodecInfo(media_codec_info* codecInfo) = 0;
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// Setup get's called with the info data from Reader::GetStreamInfo
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virtual status_t Setup(media_format* ioEncodedFormat,
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const void* infoBuffer,
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size_t infoSize) = 0;
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virtual status_t NegotiateOutputFormat(
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media_format* ioDecodedFormat) = 0;
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virtual status_t SeekedTo(int64 frame, bigtime_t time) = 0;
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virtual status_t Decode(void* buffer, int64* frameCount,
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media_header* mediaHeader,
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media_decode_info* info = 0) = 0;
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status_t GetNextChunk(const void** chunkBuffer,
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size_t* chunkSize,
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media_header* mediaHeader);
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void SetChunkProvider(BChunkProvider* provider);
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virtual status_t Perform(perform_code code, void* data);
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protected:
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BDecoder();
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virtual ~BDecoder();
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private:
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BChunkProvider* fChunkProvider;
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BMediaPlugin* fMediaPlugin;
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// needed for plug-in reference count management
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friend class BCodecKit::BPrivate::PluginManager;
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virtual void _ReservedDecoder1();
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virtual void _ReservedDecoder2();
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virtual void _ReservedDecoder3();
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virtual void _ReservedDecoder4();
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virtual void _ReservedDecoder5();
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uint32 fReserved[5];
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};
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class BDecoderPlugin : public virtual BMediaPlugin {
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public:
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BDecoderPlugin();
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virtual BDecoder* NewDecoder(uint index) = 0;
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virtual status_t GetSupportedFormats(media_format** formats,
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size_t* count) = 0;
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};
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} // namespace BCodecKit
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#endif // _DECODER_PLUGIN_H
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