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/*
* Copyright (c) 2012 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 TEST_I420_VIDEO_SOURCE_H_
#define TEST_I420_VIDEO_SOURCE_H_
#include <cstdio>
#include <cstdlib>
#include <string>
#include "test/video_source.h"
namespace libvpx_test {
// This class extends VideoSource to allow parsing of raw yv12
// so that we can do actual file encodes.
class I420VideoSource : public VideoSource {
public:
I420VideoSource(const std::string &file_name,
unsigned int width, unsigned int height,
int rate_numerator, int rate_denominator,
unsigned int start, int limit)
: file_name_(file_name),
input_file_(NULL),
img_(NULL),
start_(start),
limit_(limit),
frame_(0),
width_(0),
height_(0),
framerate_numerator_(rate_numerator),
framerate_denominator_(rate_denominator) {
// This initializes raw_sz_, width_, height_ and allocates an img.
SetSize(width, height);
}
virtual ~I420VideoSource() {
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_TRUE(input_file_ != NULL) << "Input file open failed. Filename: "
<< file_name_;
if (start_) {
fseek(input_file_, static_cast<unsigned>(raw_sz_) * start_, SEEK_SET);
}
frame_ = start_;
FillFrame();
}
virtual void Next() {
++frame_;
FillFrame();
}
virtual vpx_image_t *img() const { return (frame_ < limit_) ? img_ : NULL; }
// 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_; }
void SetSize(unsigned int width, unsigned int height) {
if (width != width_ || height != height_) {
vpx_img_free(img_);
img_ = vpx_img_alloc(NULL, VPX_IMG_FMT_I420, width, height, 1);
ASSERT_TRUE(img_ != NULL);
width_ = width;
height_ = height;
raw_sz_ = width * height * 3 / 2;
}
}
virtual void FillFrame() {
ASSERT_TRUE(input_file_ != NULL);
// Read a frame from input_file.
if (fread(img_->img_data, raw_sz_, 1, input_file_) == 0) {
limit_ = frame_;
}
}
protected:
std::string file_name_;
FILE *input_file_;
vpx_image_t *img_;
size_t raw_sz_;
unsigned int start_;
unsigned int limit_;
unsigned int frame_;
unsigned int width_;
unsigned int height_;
int framerate_numerator_;
int framerate_denominator_;
};
} // namespace libvpx_test
#endif // TEST_I420_VIDEO_SOURCE_H_
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