You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
87 lines
2.7 KiB
87 lines
2.7 KiB
/*
|
|
* Copyright (c) 2018 The WebRTC 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.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <string>
|
|
|
|
#include "api/scoped_refptr.h"
|
|
#include "api/video/i420_buffer.h"
|
|
#include "test/testsupport/file_utils.h"
|
|
#include "test/testsupport/frame_reader.h"
|
|
|
|
namespace webrtc {
|
|
namespace test {
|
|
namespace {
|
|
|
|
// Size of header: "YUV4MPEG2 W50 H20 F30:1 C420\n"
|
|
const size_t kFileHeaderSize = 29;
|
|
// Size of header: "FRAME\n"
|
|
const size_t kFrameHeaderSize = 6;
|
|
|
|
} // namespace
|
|
|
|
Y4mFrameReaderImpl::Y4mFrameReaderImpl(std::string input_filename,
|
|
int width,
|
|
int height)
|
|
: YuvFrameReaderImpl(input_filename, width, height) {
|
|
frame_length_in_bytes_ += kFrameHeaderSize;
|
|
buffer_ = new uint8_t[kFileHeaderSize];
|
|
}
|
|
Y4mFrameReaderImpl::~Y4mFrameReaderImpl() {
|
|
delete[] buffer_;
|
|
}
|
|
|
|
bool Y4mFrameReaderImpl::Init() {
|
|
if (width_ <= 0 || height_ <= 0) {
|
|
fprintf(stderr, "Frame width and height must be >0, was %d x %d\n", width_,
|
|
height_);
|
|
return false;
|
|
}
|
|
input_file_ = fopen(input_filename_.c_str(), "rb");
|
|
if (input_file_ == nullptr) {
|
|
fprintf(stderr, "Couldn't open input file for reading: %s\n",
|
|
input_filename_.c_str());
|
|
return false;
|
|
}
|
|
size_t source_file_size = GetFileSize(input_filename_);
|
|
if (source_file_size <= 0u) {
|
|
fprintf(stderr, "Found empty file: %s\n", input_filename_.c_str());
|
|
return false;
|
|
}
|
|
if (fread(buffer_, 1, kFileHeaderSize, input_file_) < kFileHeaderSize) {
|
|
fprintf(stderr, "Failed to read file header from input file: %s\n",
|
|
input_filename_.c_str());
|
|
return false;
|
|
}
|
|
// Calculate total number of frames.
|
|
number_of_frames_ = static_cast<int>((source_file_size - kFileHeaderSize) /
|
|
frame_length_in_bytes_);
|
|
return true;
|
|
}
|
|
|
|
rtc::scoped_refptr<I420Buffer> Y4mFrameReaderImpl::ReadFrame() {
|
|
if (input_file_ == nullptr) {
|
|
fprintf(stderr,
|
|
"Y4mFrameReaderImpl is not initialized (input file is NULL)\n");
|
|
return nullptr;
|
|
}
|
|
if (fread(buffer_, 1, kFrameHeaderSize, input_file_) < kFrameHeaderSize &&
|
|
ferror(input_file_)) {
|
|
fprintf(stderr, "Failed to read frame header from input file: %s\n",
|
|
input_filename_.c_str());
|
|
return nullptr;
|
|
}
|
|
return YuvFrameReaderImpl::ReadFrame();
|
|
}
|
|
|
|
} // namespace test
|
|
} // namespace webrtc
|