123 lines
3.3 KiB
C++
123 lines
3.3 KiB
C++
/*
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* Copyright (c) 2012 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef TEST_Y4M_VIDEO_SOURCE_H_
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#define TEST_Y4M_VIDEO_SOURCE_H_
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#include <algorithm>
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#include <string>
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#include "test/video_source.h"
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#include "./y4minput.h"
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namespace libvpx_test {
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// This class extends VideoSource to allow parsing of raw yv12
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// so that we can do actual file encodes.
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class Y4mVideoSource : public VideoSource {
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public:
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Y4mVideoSource(const std::string &file_name, unsigned int start, int limit)
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: file_name_(file_name), input_file_(NULL), img_(new vpx_image_t()),
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start_(start), limit_(limit), frame_(0), framerate_numerator_(0),
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framerate_denominator_(0), y4m_() {}
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virtual ~Y4mVideoSource() {
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vpx_img_free(img_.get());
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CloseSource();
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}
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virtual void OpenSource() {
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CloseSource();
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input_file_ = OpenTestDataFile(file_name_);
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ASSERT_TRUE(input_file_ != NULL)
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<< "Input file open failed. Filename: " << file_name_;
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}
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virtual void ReadSourceToStart() {
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ASSERT_TRUE(input_file_ != NULL);
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ASSERT_FALSE(y4m_input_open(&y4m_, input_file_, NULL, 0, 0));
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framerate_numerator_ = y4m_.fps_n;
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framerate_denominator_ = y4m_.fps_d;
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frame_ = 0;
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for (unsigned int i = 0; i < start_; i++) {
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Next();
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}
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FillFrame();
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}
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virtual void Begin() {
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OpenSource();
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ReadSourceToStart();
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}
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virtual void Next() {
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++frame_;
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FillFrame();
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}
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virtual vpx_image_t *img() const {
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return (frame_ < limit_) ? img_.get() : NULL;
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}
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// Models a stream where Timebase = 1/FPS, so pts == frame.
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virtual vpx_codec_pts_t pts() const { return frame_; }
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virtual unsigned long duration() const { return 1; }
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virtual vpx_rational_t timebase() const {
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const vpx_rational_t t = { framerate_denominator_, framerate_numerator_ };
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return t;
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}
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virtual unsigned int frame() const { return frame_; }
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virtual unsigned int limit() const { return limit_; }
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virtual void FillFrame() {
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ASSERT_TRUE(input_file_ != NULL);
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// Read a frame from input_file.
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y4m_input_fetch_frame(&y4m_, input_file_, img_.get());
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}
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// Swap buffers with another y4m source. This allows reading a new frame
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// while keeping the old frame around. A whole Y4mSource is required and
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// not just a vpx_image_t because of how the y4m reader manipulates
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// vpx_image_t internals,
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void SwapBuffers(Y4mVideoSource *other) {
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std::swap(other->y4m_.dst_buf, y4m_.dst_buf);
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vpx_image_t *tmp;
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tmp = other->img_.release();
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other->img_.reset(img_.release());
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img_.reset(tmp);
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}
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protected:
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void CloseSource() {
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y4m_input_close(&y4m_);
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y4m_ = y4m_input();
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if (input_file_ != NULL) {
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fclose(input_file_);
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input_file_ = NULL;
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}
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}
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std::string file_name_;
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FILE *input_file_;
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testing::internal::scoped_ptr<vpx_image_t> img_;
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unsigned int start_;
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unsigned int limit_;
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unsigned int frame_;
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int framerate_numerator_;
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int framerate_denominator_;
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y4m_input y4m_;
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};
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} // namespace libvpx_test
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#endif // TEST_Y4M_VIDEO_SOURCE_H_
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