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40 lines
976 B
40 lines
976 B
#pragma once
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#include <string>
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#include <vector>
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extern "C" {
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#include <libavcodec/avcodec.h>
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#include <libavformat/avformat.h>
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}
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class FrameReader {
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public:
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FrameReader();
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~FrameReader();
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bool load(const std::string &url);
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bool get(int idx, uint8_t *rgb, uint8_t *yuv);
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int getRGBSize() const { return width * height * 3; }
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int getYUVSize() const { return width * height * 3 / 2; }
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size_t getFrameCount() const { return frames_.size(); }
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bool valid() const { return valid_; }
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int width = 0, height = 0;
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private:
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bool decode(int idx, uint8_t *rgb, uint8_t *yuv);
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bool decodeFrame(AVFrame *f, uint8_t *rgb, uint8_t *yuv);
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struct Frame {
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AVPacket pkt = {};
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int decoded = false;
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bool failed = false;
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};
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std::vector<Frame> frames_;
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AVFrame *av_frame_ = nullptr;
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AVFormatContext *pFormatCtx_ = nullptr;
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AVCodecContext *pCodecCtx_ = nullptr;
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int key_frames_count_ = 0;
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std::vector<uint8_t> yuv_buf_;
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bool valid_ = false;
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};
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