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authortrav90 <travawine@palemoon.org>2018-10-15 21:45:30 -0500
committertrav90 <travawine@palemoon.org>2018-10-15 21:45:30 -0500
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Import aom library
This is the reference implementation for the Alliance for Open Media's av1 video code. The commit used was 4d668d7feb1f8abd809d1bca0418570a7f142a36.
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+/*
+ * 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 TEST_Y4M_VIDEO_SOURCE_H_
+#define TEST_Y4M_VIDEO_SOURCE_H_
+#include <algorithm>
+#include <string>
+
+#include "test/video_source.h"
+#include "./y4minput.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, 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_;
+ testing::internal::scoped_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 // TEST_Y4M_VIDEO_SOURCE_H_