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94 lines
2.5 KiB
C++
94 lines
2.5 KiB
C++
#ifndef GAME_SOUND_FFMPEG_DECODER_H
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#define GAME_SOUND_FFMPEG_DECODER_H
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#include <stdint.h>
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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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// From libavutil version 52.2.0 and onward the declaration of
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// AV_CH_LAYOUT_* is removed from libavcodec/avcodec.h and moved to
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// libavutil/channel_layout.h
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#if AV_VERSION_INT(52, 2, 0) <= AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
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LIBAVUTIL_VERSION_MINOR, LIBAVUTIL_VERSION_MICRO)
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#include <libavutil/channel_layout.h>
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#endif
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#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(55,28,1)
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#define av_frame_alloc avcodec_alloc_frame
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#endif
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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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#include <components/files/constrainedfilestream.hpp>
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#include <string>
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#include <istream>
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#include "sound_decoder.hpp"
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namespace MWSound
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{
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class FFmpeg_Decoder final : public Sound_Decoder
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{
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AVFormatContext *mFormatCtx;
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AVStream **mStream;
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AVPacket mPacket;
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AVFrame *mFrame;
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int mFrameSize;
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int 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(const std::string &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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FFmpeg_Decoder(const VFS::Manager* vfs);
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public:
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virtual ~FFmpeg_Decoder();
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friend class SoundManager;
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};
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#ifndef DEFAULT_DECODER
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#define DEFAULT_DECODER (::MWSound::FFmpeg_Decoder)
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#endif
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}
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#endif
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