| /* |
| * Copyright (c) 2016, Alliance for Open Media. All rights reserved |
| * |
| * This source code is subject to the terms of the BSD 2 Clause License and |
| * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License |
| * was not distributed with this source code in the LICENSE file, you can |
| * obtain it at www.aomedia.org/license/software. If the Alliance for Open |
| * Media Patent License 1.0 was not distributed with this source code in the |
| * PATENTS file, you can obtain it at www.aomedia.org/license/patent. |
| */ |
| #ifndef AOM_TEST_Y4M_VIDEO_SOURCE_H_ |
| #define AOM_TEST_Y4M_VIDEO_SOURCE_H_ |
| #include <algorithm> |
| #include <memory> |
| #include <string> |
| |
| #include "common/y4minput.h" |
| #include "test/video_source.h" |
| |
| namespace libaom_test { |
| |
| // This class extends VideoSource to allow parsing of raw yv12 |
| // so that we can do actual file encodes. |
| class Y4mVideoSource : public VideoSource { |
| public: |
| Y4mVideoSource(const std::string &file_name, unsigned int start, int limit) |
| : file_name_(file_name), input_file_(NULL), img_(new aom_image_t()), |
| start_(start), limit_(limit), frame_(0), framerate_numerator_(0), |
| framerate_denominator_(0), y4m_() {} |
| |
| virtual ~Y4mVideoSource() { |
| aom_img_free(img_.get()); |
| CloseSource(); |
| } |
| |
| virtual void OpenSource() { |
| CloseSource(); |
| input_file_ = OpenTestDataFile(file_name_); |
| ASSERT_TRUE(input_file_ != NULL) |
| << "Input file open failed. Filename: " << file_name_; |
| } |
| |
| virtual void ReadSourceToStart() { |
| ASSERT_TRUE(input_file_ != NULL); |
| ASSERT_FALSE( |
| y4m_input_open(&y4m_, input_file_, NULL, 0, AOM_CSP_UNKNOWN, 0)); |
| framerate_numerator_ = y4m_.fps_n; |
| framerate_denominator_ = y4m_.fps_d; |
| frame_ = 0; |
| for (unsigned int i = 0; i < start_; i++) { |
| Next(); |
| } |
| FillFrame(); |
| } |
| |
| virtual void Begin() { |
| OpenSource(); |
| ReadSourceToStart(); |
| } |
| |
| virtual void Next() { |
| ++frame_; |
| FillFrame(); |
| } |
| |
| virtual aom_image_t *img() const { |
| return (frame_ < limit_) ? img_.get() : NULL; |
| } |
| |
| // Models a stream where Timebase = 1/FPS, so pts == frame. |
| virtual aom_codec_pts_t pts() const { return frame_; } |
| |
| virtual unsigned long duration() const { return 1; } |
| |
| virtual aom_rational_t timebase() const { |
| const aom_rational_t t = { framerate_denominator_, framerate_numerator_ }; |
| return t; |
| } |
| |
| virtual unsigned int frame() const { return frame_; } |
| |
| virtual unsigned int limit() const { return limit_; } |
| |
| virtual void FillFrame() { |
| ASSERT_TRUE(input_file_ != NULL); |
| // Read a frame from input_file. |
| y4m_input_fetch_frame(&y4m_, input_file_, img_.get()); |
| } |
| |
| // Swap buffers with another y4m source. This allows reading a new frame |
| // while keeping the old frame around. A whole Y4mSource is required and |
| // not just a aom_image_t because of how the y4m reader manipulates |
| // aom_image_t internals, |
| void SwapBuffers(Y4mVideoSource *other) { |
| std::swap(other->y4m_.dst_buf, y4m_.dst_buf); |
| aom_image_t *tmp; |
| tmp = other->img_.release(); |
| other->img_.reset(img_.release()); |
| img_.reset(tmp); |
| } |
| |
| protected: |
| void CloseSource() { |
| y4m_input_close(&y4m_); |
| y4m_ = y4m_input(); |
| if (input_file_ != NULL) { |
| fclose(input_file_); |
| input_file_ = NULL; |
| } |
| } |
| |
| std::string file_name_; |
| FILE *input_file_; |
| std::unique_ptr<aom_image_t> img_; |
| unsigned int start_; |
| unsigned int limit_; |
| unsigned int frame_; |
| int framerate_numerator_; |
| int framerate_denominator_; |
| y4m_input y4m_; |
| }; |
| |
| } // namespace libaom_test |
| |
| #endif // AOM_TEST_Y4M_VIDEO_SOURCE_H_ |