112 строки
3.3 KiB
C++
112 строки
3.3 KiB
C++
/*
|
|
* 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_IVF_VIDEO_SOURCE_H_
|
|
#define TEST_IVF_VIDEO_SOURCE_H_
|
|
#include <cstdio>
|
|
#include <cstdlib>
|
|
#include <new>
|
|
#include <string>
|
|
#include "test/video_source.h"
|
|
|
|
namespace libvpx_test {
|
|
const unsigned int kCodeBufferSize = 256 * 1024;
|
|
const unsigned int kIvfFileHdrSize = 32;
|
|
const unsigned int kIvfFrameHdrSize = 12;
|
|
|
|
static unsigned int MemGetLe32(const uint8_t *mem) {
|
|
return (mem[3] << 24) | (mem[2] << 16) | (mem[1] << 8) | (mem[0]);
|
|
}
|
|
|
|
// This class extends VideoSource to allow parsing of ivf files,
|
|
// so that we can do actual file decodes.
|
|
class IVFVideoSource : public CompressedVideoSource {
|
|
public:
|
|
IVFVideoSource(const std::string &file_name)
|
|
: file_name_(file_name),
|
|
input_file_(NULL),
|
|
compressed_frame_buf_(NULL),
|
|
frame_sz_(0),
|
|
frame_(0),
|
|
end_of_file_(false) {
|
|
}
|
|
|
|
virtual ~IVFVideoSource() {
|
|
delete[] compressed_frame_buf_;
|
|
|
|
if (input_file_)
|
|
fclose(input_file_);
|
|
}
|
|
|
|
virtual void Init() {
|
|
// Allocate a buffer for read in the compressed video frame.
|
|
compressed_frame_buf_ = new uint8_t[libvpx_test::kCodeBufferSize];
|
|
ASSERT_TRUE(compressed_frame_buf_ != NULL)
|
|
<< "Allocate frame buffer failed";
|
|
}
|
|
|
|
virtual void Begin() {
|
|
input_file_ = OpenTestDataFile(file_name_);
|
|
ASSERT_TRUE(input_file_ != NULL) << "Input file open failed. Filename: "
|
|
<< file_name_;
|
|
|
|
// Read file header
|
|
uint8_t file_hdr[kIvfFileHdrSize];
|
|
ASSERT_EQ(kIvfFileHdrSize, fread(file_hdr, 1, kIvfFileHdrSize, input_file_))
|
|
<< "File header read failed.";
|
|
// Check file header
|
|
ASSERT_TRUE(file_hdr[0] == 'D' && file_hdr[1] == 'K' && file_hdr[2] == 'I'
|
|
&& file_hdr[3] == 'F') << "Input is not an IVF file.";
|
|
|
|
FillFrame();
|
|
}
|
|
|
|
virtual void Next() {
|
|
++frame_;
|
|
FillFrame();
|
|
}
|
|
|
|
void FillFrame() {
|
|
ASSERT_TRUE(input_file_ != NULL);
|
|
uint8_t frame_hdr[kIvfFrameHdrSize];
|
|
// Check frame header and read a frame from input_file.
|
|
if (fread(frame_hdr, 1, kIvfFrameHdrSize, input_file_)
|
|
!= kIvfFrameHdrSize) {
|
|
end_of_file_ = true;
|
|
} else {
|
|
end_of_file_ = false;
|
|
|
|
frame_sz_ = MemGetLe32(frame_hdr);
|
|
ASSERT_LE(frame_sz_, kCodeBufferSize)
|
|
<< "Frame is too big for allocated code buffer";
|
|
ASSERT_EQ(frame_sz_,
|
|
fread(compressed_frame_buf_, 1, frame_sz_, input_file_))
|
|
<< "Failed to read complete frame";
|
|
}
|
|
}
|
|
|
|
virtual const uint8_t *cxdata() const {
|
|
return end_of_file_ ? NULL : compressed_frame_buf_;
|
|
}
|
|
virtual const unsigned int frame_size() const { return frame_sz_; }
|
|
virtual const unsigned int frame_number() const { return frame_; }
|
|
|
|
protected:
|
|
std::string file_name_;
|
|
FILE *input_file_;
|
|
uint8_t *compressed_frame_buf_;
|
|
unsigned int frame_sz_;
|
|
unsigned int frame_;
|
|
bool end_of_file_;
|
|
};
|
|
|
|
} // namespace libvpx_test
|
|
|
|
#endif // TEST_IVF_VIDEO_SOURCE_H_
|