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@ -47,7 +47,9 @@ FrameReader::~FrameReader() { |
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if (pFormatCtx_) avformat_close_input(&pFormatCtx_); |
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if (pFormatCtx_) avformat_close_input(&pFormatCtx_); |
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if (av_frame_) av_frame_free(&av_frame_); |
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if (av_frame_) av_frame_free(&av_frame_); |
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if (rgb_frame_) av_frame_free(&rgb_frame_); |
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if (rgb_frame_) av_frame_free(&rgb_frame_); |
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if (sws_ctx_) sws_freeContext(sws_ctx_); |
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if (yuv_frame_) av_frame_free(&yuv_frame_); |
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if (rgb_sws_ctx_) sws_freeContext(rgb_sws_ctx_); |
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if (yuv_sws_ctx_) sws_freeContext(yuv_sws_ctx_); |
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} |
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} |
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bool FrameReader::load(const std::string &url) { |
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bool FrameReader::load(const std::string &url) { |
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@ -75,13 +77,19 @@ bool FrameReader::load(const std::string &url) { |
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av_frame_ = av_frame_alloc(); |
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av_frame_ = av_frame_alloc(); |
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rgb_frame_ = av_frame_alloc(); |
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rgb_frame_ = av_frame_alloc(); |
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yuv_frame_ = av_frame_alloc();; |
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width = pCodecCtxOrig->width; |
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width = (pCodecCtxOrig->width + 3) & ~3; |
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height = pCodecCtxOrig->height; |
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height = pCodecCtxOrig->height; |
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sws_ctx_ = sws_getContext(width, height, AV_PIX_FMT_YUV420P, |
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rgb_sws_ctx_ = sws_getContext(pCodecCtxOrig->width, pCodecCtxOrig->height, AV_PIX_FMT_YUV420P, |
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width, height, AV_PIX_FMT_BGR24, |
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width, height, AV_PIX_FMT_BGR24, |
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SWS_FAST_BILINEAR, NULL, NULL, NULL); |
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SWS_FAST_BILINEAR, NULL, NULL, NULL); |
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if (!sws_ctx_) return false; |
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if (!rgb_sws_ctx_) return false; |
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yuv_sws_ctx_ = sws_getContext(pCodecCtxOrig->width, pCodecCtxOrig->height, AV_PIX_FMT_YUV420P, |
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width, height, AV_PIX_FMT_YUV420P, |
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SWS_FAST_BILINEAR, NULL, NULL, NULL); |
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if (!yuv_sws_ctx_) return false; |
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frames_.reserve(60 * 20); // 20fps, one minute
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frames_.reserve(60 * 20); // 20fps, one minute
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while (true) { |
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while (true) { |
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@ -143,10 +151,11 @@ bool FrameReader::decode(int idx, uint8_t *rgb, uint8_t *yuv) { |
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bool FrameReader::decodeFrame(AVFrame *f, uint8_t *rgb, uint8_t *yuv) { |
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bool FrameReader::decodeFrame(AVFrame *f, uint8_t *rgb, uint8_t *yuv) { |
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// images is going to be written to output buffers, no alignment (align = 1)
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// images is going to be written to output buffers, no alignment (align = 1)
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int ret = av_image_copy_to_buffer(yuv, getYUVSize(), f->data, f->linesize, AV_PIX_FMT_YUV420P, f->width, f->height, 1); |
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av_image_fill_arrays(yuv_frame_->data, yuv_frame_->linesize, yuv, AV_PIX_FMT_YUV420P, width, height, 1); |
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int ret = sws_scale(yuv_sws_ctx_, (const uint8_t **)f->data, f->linesize, 0, f->height, yuv_frame_->data, yuv_frame_->linesize); |
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if (ret < 0) return false; |
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if (ret < 0) return false; |
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av_image_fill_arrays(rgb_frame_->data, rgb_frame_->linesize, rgb, AV_PIX_FMT_BGR24, f->width, f->height, 1); |
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av_image_fill_arrays(rgb_frame_->data, rgb_frame_->linesize, rgb, AV_PIX_FMT_BGR24, width, height, 1); |
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ret = sws_scale(sws_ctx_, (const uint8_t **)f->data, f->linesize, 0, f->height, rgb_frame_->data, rgb_frame_->linesize); |
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ret = sws_scale(rgb_sws_ctx_, (const uint8_t **)f->data, f->linesize, 0, f->height, rgb_frame_->data, rgb_frame_->linesize); |
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return ret >= 0; |
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return ret >= 0; |
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} |
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} |
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