645df9e3b5
Bug: webrtc:10138 Change-Id: I213a4309a8a4b1a7afd296bf45566c9b3f9a215c Reviewed-on: https://webrtc-review.googlesource.com/c/117301 Commit-Queue: Artem Titov <titovartem@webrtc.org> Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org> Cr-Commit-Position: refs/heads/master@{#26243}
86 lines
2.7 KiB
C++
86 lines
2.7 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/video/i420_buffer.h"
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#include "rtc_base/scoped_ref_ptr.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 W50 H20 F30:1 C420\n"
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const size_t kFileHeaderSize = 29;
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// Size of header: "FRAME\n"
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const size_t kFrameHeaderSize = 6;
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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 uint8_t[kFileHeaderSize];
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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 (width_ <= 0 || height_ <= 0) {
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fprintf(stderr, "Frame width and height must be >0, was %d x %d\n", width_,
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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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fprintf(stderr, "Couldn't open input file for reading: %s\n",
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input_filename_.c_str());
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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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fprintf(stderr, "Found empty file: %s\n", input_filename_.c_str());
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return false;
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}
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if (fread(buffer_, 1, kFileHeaderSize, input_file_) < kFileHeaderSize) {
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fprintf(stderr, "Failed to read file header from input file: %s\n",
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input_filename_.c_str());
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return false;
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}
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// Calculate total number of frames.
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number_of_frames_ = static_cast<int>((source_file_size - kFileHeaderSize) /
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frame_length_in_bytes_);
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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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fprintf(stderr,
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"Y4mFrameReaderImpl is not initialized (input file is NULL)\n");
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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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fprintf(stderr, "Failed to read frame header from input file: %s\n",
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input_filename_.c_str());
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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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