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| 1 /* | |
| 2 * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license | |
| 5 * that can be found in the LICENSE file in the root of the source | |
| 6 * tree. An additional intellectual property rights grant can be found | |
| 7 * in the file PATENTS. All contributing project authors may | |
| 8 * be found in the AUTHORS file in the root of the source tree. | |
| 9 */ | |
| 10 | |
| 11 #include "webrtc/test/testsupport/frame_reader.h" | |
| 12 | |
| 13 #include "webrtc/api/video/i420_buffer.h" | |
| 14 #include "webrtc/test/frame_utils.h" | |
| 15 #include "webrtc/test/testsupport/fileutils.h" | |
| 16 | |
| 17 namespace webrtc { | |
| 18 namespace test { | |
| 19 | |
| 20 YuvFrameReaderImpl::YuvFrameReaderImpl(std::string input_filename, | |
| 21 int width, | |
| 22 int height) | |
| 23 : input_filename_(input_filename), | |
| 24 frame_length_in_bytes_(0), | |
| 25 width_(width), | |
| 26 height_(height), | |
| 27 number_of_frames_(-1), | |
| 28 input_file_(nullptr) {} | |
| 29 | |
| 30 YuvFrameReaderImpl::~YuvFrameReaderImpl() { | |
| 31 Close(); | |
| 32 } | |
| 33 | |
| 34 bool YuvFrameReaderImpl::Init() { | |
| 35 if (width_ <= 0 || height_ <= 0) { | |
| 36 fprintf(stderr, "Frame width and height must be >0, was %d x %d\n", width_, | |
| 37 height_); | |
| 38 return false; | |
| 39 } | |
| 40 frame_length_in_bytes_ = | |
| 41 width_ * height_ + 2 * ((width_ + 1) / 2) * ((height_ + 1) / 2); | |
| 42 | |
| 43 input_file_ = fopen(input_filename_.c_str(), "rb"); | |
| 44 if (input_file_ == nullptr) { | |
| 45 fprintf(stderr, "Couldn't open input file for reading: %s\n", | |
| 46 input_filename_.c_str()); | |
| 47 return false; | |
| 48 } | |
| 49 // Calculate total number of frames. | |
| 50 size_t source_file_size = GetFileSize(input_filename_); | |
| 51 if (source_file_size <= 0u) { | |
| 52 fprintf(stderr, "Found empty file: %s\n", input_filename_.c_str()); | |
| 53 return false; | |
| 54 } | |
| 55 number_of_frames_ = | |
| 56 static_cast<int>(source_file_size / frame_length_in_bytes_); | |
| 57 return true; | |
| 58 } | |
| 59 | |
| 60 rtc::scoped_refptr<I420Buffer> YuvFrameReaderImpl::ReadFrame() { | |
| 61 if (input_file_ == nullptr) { | |
| 62 fprintf(stderr, | |
| 63 "YuvFrameReaderImpl is not initialized (input file is NULL)\n"); | |
| 64 return nullptr; | |
| 65 } | |
| 66 rtc::scoped_refptr<I420Buffer> buffer( | |
| 67 ReadI420Buffer(width_, height_, input_file_)); | |
| 68 if (!buffer && ferror(input_file_)) { | |
| 69 fprintf(stderr, "Error reading from input file: %s\n", | |
| 70 input_filename_.c_str()); | |
| 71 } | |
| 72 return buffer; | |
| 73 } | |
| 74 | |
| 75 void YuvFrameReaderImpl::Close() { | |
| 76 if (input_file_ != nullptr) { | |
| 77 fclose(input_file_); | |
| 78 input_file_ = nullptr; | |
| 79 } | |
| 80 } | |
| 81 | |
| 82 size_t YuvFrameReaderImpl::FrameLength() { | |
| 83 return frame_length_in_bytes_; | |
| 84 } | |
| 85 | |
| 86 int YuvFrameReaderImpl::NumberOfFrames() { | |
| 87 return number_of_frames_; | |
| 88 } | |
| 89 | |
| 90 } // namespace test | |
| 91 } // namespace webrtc | |
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