mirror of https://github.com/odrling/Aegisub
81 lines
2.7 KiB
C++
81 lines
2.7 KiB
C++
// Copyright (c) 2007-2008 Fredrik Mellbin
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#ifndef FFAUDIOSOURCE_H
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#define FFAUDIOSOURCE_H
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extern "C" {
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#include <libavformat/avformat.h>
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#include <libavcodec/avcodec.h>
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}
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#include <vector>
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#include "indexing.h"
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#include "utils.h"
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#include "ffms.h"
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class AudioBase {
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protected:
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uint8_t *DecodingBuffer;
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FrameInfoVector Frames;
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AVCodecContext *CodecContext;
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AudioProperties AP;
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size_t FindClosestAudioKeyFrame(int64_t Sample);
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public:
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AudioBase();
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~AudioBase();
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const AudioProperties& GetAudioProperties() { return AP; }
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virtual int GetAudio(void *Buf, int64_t Start, int64_t Count, char *ErrorMsg, unsigned MsgSize) = 0;
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};
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class FFAudioSource : public AudioBase {
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private:
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AVFormatContext *FormatContext;
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int AudioTrack;
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int DecodeNextAudioBlock(uint8_t *Buf, int64_t *Count, char *ErrorMsg, unsigned MsgSize);
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void Free(bool CloseCodec);
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public:
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FFAudioSource(const char *SourceFile, int Track, FrameIndex *TrackIndices, char *ErrorMsg, unsigned MsgSize);
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~FFAudioSource();
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int GetAudio(void *Buf, int64_t Start, int64_t Count, char *ErrorMsg, unsigned MsgSize);
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};
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class MatroskaAudioSource : public AudioBase {
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private:
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MatroskaFile *MF;
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MatroskaReaderContext MC;
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CompressedStream *CS;
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char ErrorMessage[256];
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int DecodeNextAudioBlock(uint8_t *Buf, int64_t *Count, uint64_t FilePos, unsigned int FrameSize, char *ErrorMsg, unsigned MsgSize);
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void Free(bool CloseCodec);
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public:
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MatroskaAudioSource(const char *SourceFile, int Track, FrameIndex *TrackIndices, char *ErrorMsg, unsigned MsgSize);
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~MatroskaAudioSource();
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int GetAudio(void *Buf, int64_t Start, int64_t Count, char *ErrorMsg, unsigned MsgSize);
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};
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#endif
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