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/*
* Copyright (c) 2014 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef VPX_TEST_YUV_VIDEO_SOURCE_H_
#define VPX_TEST_YUV_VIDEO_SOURCE_H_
#include <cstdio>
#include <cstdlib>
#include <string>
#include "test/video_source.h"
#include "vpx/vpx_image.h"
namespace libvpx_test {
// This class extends VideoSource to allow parsing of raw YUV
// formats of various color sampling and bit-depths so that we can
// do actual file encodes.
class YUVVideoSource : public VideoSource {
public:
YUVVideoSource(const std::string &file_name, vpx_img_fmt format,
unsigned int width, unsigned int height, int rate_numerator,
int rate_denominator, unsigned int start, int limit)
: file_name_(file_name), input_file_(nullptr), img_(nullptr),
start_(start), limit_(limit), frame_(0), width_(0), height_(0),
format_(VPX_IMG_FMT_NONE), framerate_numerator_(rate_numerator),
framerate_denominator_(rate_denominator) {
// This initializes format_, raw_size_, width_, height_ and allocates img.
SetSize(width, height, format);
}
virtual ~YUVVideoSource() {
vpx_img_free(img_);
if (input_file_) fclose(input_file_);
}
virtual void Begin() {
if (input_file_) fclose(input_file_);
input_file_ = OpenTestDataFile(file_name_);
ASSERT_NE(input_file_, nullptr)
<< "Input file open failed. Filename: " << file_name_;
if (start_) {
fseek(input_file_, static_cast<unsigned>(raw_size_) * start_, SEEK_SET);
}
frame_ = start_;
FillFrame();
}
virtual void Next() {
++frame_;
FillFrame();
}
virtual vpx_image_t *img() const {
return (frame_ < limit_) ? img_ : nullptr;
}
// Models a stream where Timebase = 1/FPS, so pts == frame.
virtual vpx_codec_pts_t pts() const { return frame_; }
virtual unsigned long duration() const { return 1; }
virtual vpx_rational_t timebase() const {
const vpx_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 SetSize(unsigned int width, unsigned int height,
vpx_img_fmt format) {
if (width != width_ || height != height_ || format != format_) {
vpx_img_free(img_);
img_ = vpx_img_alloc(nullptr, format, width, height, 1);
ASSERT_NE(img_, nullptr);
width_ = width;
height_ = height;
format_ = format;
switch (format) {
case VPX_IMG_FMT_NV12:
case VPX_IMG_FMT_I420: raw_size_ = width * height * 3 / 2; break;
case VPX_IMG_FMT_I422: raw_size_ = width * height * 2; break;
case VPX_IMG_FMT_I440: raw_size_ = width * height * 2; break;
case VPX_IMG_FMT_I444: raw_size_ = width * height * 3; break;
case VPX_IMG_FMT_I42016: raw_size_ = width * height * 3; break;
case VPX_IMG_FMT_I42216: raw_size_ = width * height * 4; break;
case VPX_IMG_FMT_I44016: raw_size_ = width * height * 4; break;
case VPX_IMG_FMT_I44416: raw_size_ = width * height * 6; break;
default: ASSERT_TRUE(0);
}
}
}
virtual void FillFrame() {
ASSERT_NE(input_file_, nullptr);
// Read a frame from input_file.
if (fread(img_->img_data, raw_size_, 1, input_file_) == 0) {
limit_ = frame_;
}
}
protected:
std::string file_name_;
FILE *input_file_;
vpx_image_t *img_;
size_t raw_size_;
unsigned int start_;
unsigned int limit_;
unsigned int frame_;
unsigned int width_;
unsigned int height_;
vpx_img_fmt format_;
int framerate_numerator_;
int framerate_denominator_;
};
} // namespace libvpx_test
#endif // VPX_TEST_YUV_VIDEO_SOURCE_H_
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