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119 lines
2.9 KiB
C++
119 lines
2.9 KiB
C++
#ifndef GAME_SOUND_FFMPEG_DECODER_H
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#define GAME_SOUND_FFMPEG_DECODER_H
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#include <cstdint>
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#if defined(_MSC_VER)
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#pragma warning(push)
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#pragma warning(disable : 4244)
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#endif
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extern "C"
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{
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#include <libavcodec/avcodec.h>
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#include <libavformat/avformat.h>
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#include <libavutil/channel_layout.h>
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// From version 54.56 binkaudio encoding format changed from S16 to FLTP. See:
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// https://gitorious.org/ffmpeg/ffmpeg/commit/7bfd1766d1c18f07b0a2dd042418a874d49ea60d
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// https://ffmpeg.zeranoe.com/forum/viewtopic.php?f=15&t=872
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#include <libswresample/swresample.h>
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}
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#if defined(_MSC_VER)
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#pragma warning(pop)
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#endif
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#include <components/files/istreamptr.hpp>
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#include <string>
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#include "sound_decoder.hpp"
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namespace MWSound
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{
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struct AVIOContextDeleter
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{
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void operator()(AVIOContext* ptr) const;
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};
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using AVIOContextPtr = std::unique_ptr<AVIOContext, AVIOContextDeleter>;
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struct AVFormatContextDeleter
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{
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void operator()(AVFormatContext* ptr) const;
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};
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using AVFormatContextPtr = std::unique_ptr<AVFormatContext, AVFormatContextDeleter>;
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struct AVCodecContextDeleter
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{
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void operator()(AVCodecContext* ptr) const;
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};
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using AVCodecContextPtr = std::unique_ptr<AVCodecContext, AVCodecContextDeleter>;
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struct AVFrameDeleter
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{
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void operator()(AVFrame* ptr) const;
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};
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using AVFramePtr = std::unique_ptr<AVFrame, AVFrameDeleter>;
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class FFmpeg_Decoder final : public Sound_Decoder
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{
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AVIOContextPtr mIoCtx;
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AVFormatContextPtr mFormatCtx;
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AVCodecContextPtr mCodecCtx;
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AVStream** mStream;
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AVPacket mPacket;
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AVFramePtr mFrame;
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std::size_t mFrameSize;
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std::size_t mFramePos;
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double mNextPts;
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SwrContext* mSwr;
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enum AVSampleFormat mOutputSampleFormat;
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int64_t mOutputChannelLayout;
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uint8_t* mDataBuf;
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uint8_t** mFrameData;
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int mDataBufLen;
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bool getNextPacket();
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Files::IStreamPtr mDataStream;
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static int readPacket(void* user_data, uint8_t* buf, int buf_size);
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static int writePacket(void* user_data, uint8_t* buf, int buf_size);
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static int64_t seek(void* user_data, int64_t offset, int whence);
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bool getAVAudioData();
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size_t readAVAudioData(void* data, size_t length);
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void open(VFS::Path::NormalizedView fname) override;
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void close() override;
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std::string getName() override;
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void getInfo(int* samplerate, ChannelConfig* chans, SampleType* type) override;
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size_t read(char* buffer, size_t bytes) override;
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void readAll(std::vector<char>& output) override;
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size_t getSampleOffset() override;
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FFmpeg_Decoder& operator=(const FFmpeg_Decoder& rhs);
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FFmpeg_Decoder(const FFmpeg_Decoder& rhs);
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public:
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explicit FFmpeg_Decoder(const VFS::Manager* vfs);
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virtual ~FFmpeg_Decoder();
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friend class SoundManager;
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};
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}
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#endif
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