b984c07dab
Bug: b/240540204 Change-Id: I7069bb0105ea3c6aa66e9d73f5f63ac5ec470733 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/278620 Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Commit-Queue: Artem Titov <titovartem@webrtc.org> Cr-Commit-Position: refs/heads/main@{#38337}
110 lines
3.7 KiB
C++
110 lines
3.7 KiB
C++
/*
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* Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <stdio.h>
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#include <string>
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#include "api/scoped_refptr.h"
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#include "api/video/i420_buffer.h"
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#include "rtc_base/logging.h"
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#include "rtc_base/strings/string_builder.h"
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#include "test/testsupport/file_utils.h"
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#include "test/testsupport/frame_reader.h"
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namespace webrtc {
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namespace test {
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namespace {
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// Size of header: "YUV4MPEG2 WXXXXXX HXXXXXX FXXX:1 C420\n"
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// We allocate up to 6 digits for width and height and up to 3 digits for FPS.
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const size_t kFileHeaderMaxSize = 38;
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// Size of header: "YUV4MPEG2 WX HX FX:1 C420\n"
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const size_t kFileHeaderMinSize = 26;
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// Size of header: "FRAME\n"
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const size_t kFrameHeaderSize = 6;
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std::string GetExpectedHeaderPrefix(int width, int height) {
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rtc::StringBuilder out;
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out << "YUV4MPEG2 W" << width << " H" << height << " F";
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return out.str();
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}
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} // namespace
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Y4mFrameReaderImpl::Y4mFrameReaderImpl(std::string input_filename,
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int width,
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int height)
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: YuvFrameReaderImpl(input_filename, width, height) {
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frame_length_in_bytes_ += kFrameHeaderSize;
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buffer_ = new char[kFileHeaderMaxSize];
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}
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Y4mFrameReaderImpl::~Y4mFrameReaderImpl() {
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delete[] buffer_;
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}
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bool Y4mFrameReaderImpl::Init() {
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if (input_width_ <= 0 || input_height_ <= 0) {
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RTC_LOG(LS_ERROR) << "Frame width and height must be positive. Was: "
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<< input_width_ << "x" << input_height_;
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return false;
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}
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input_file_ = fopen(input_filename_.c_str(), "rb");
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if (input_file_ == nullptr) {
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RTC_LOG(LS_ERROR) << "Couldn't open input file: " << input_filename_;
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return false;
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}
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size_t source_file_size = GetFileSize(input_filename_);
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if (source_file_size <= 0u) {
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RTC_LOG(LS_ERROR) << "Input file " << input_filename_ << " is empty.";
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return false;
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}
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char* c_file_header = fgets(buffer_, kFileHeaderMaxSize, input_file_);
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std::string file_header(c_file_header);
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if (file_header.size() < kFileHeaderMinSize) {
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RTC_LOG(LS_ERROR) << "Couldn't read Y4M header from input file: "
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<< input_filename_;
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return false;
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}
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if (file_header.find(GetExpectedHeaderPrefix(input_width_, input_height_)) !=
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0) {
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RTC_LOG(LS_ERROR) << "Couldn't read Y4M file: " << input_filename_
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<< ". Input file has different resolution, expected: "
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<< GetExpectedHeaderPrefix(input_width_, input_height_)
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<< "[0-9]?:1 C420; got: " << file_header;
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return false;
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}
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number_of_frames_ = static_cast<int>((source_file_size - file_header.size()) /
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frame_length_in_bytes_);
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if (number_of_frames_ == 0) {
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RTC_LOG(LS_ERROR) << "Input file " << input_filename_ << " is too small.";
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}
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return true;
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}
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rtc::scoped_refptr<I420Buffer> Y4mFrameReaderImpl::ReadFrame() {
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if (input_file_ == nullptr) {
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RTC_LOG(LS_ERROR) << "Y4mFrameReaderImpl is not initialized.";
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return nullptr;
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}
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if (fread(buffer_, 1, kFrameHeaderSize, input_file_) < kFrameHeaderSize &&
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ferror(input_file_)) {
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RTC_LOG(LS_ERROR) << "Couldn't read frame header from input file: "
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<< input_filename_;
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return nullptr;
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}
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return YuvFrameReaderImpl::ReadFrame();
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}
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} // namespace test
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} // namespace webrtc
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