Magnus Jedvert | 10e829a | 2018-09-05 10:46:18 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2018 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 "rtc_tools/video_file_reader.h" |
| 12 | |
Magnus Jedvert | 10e829a | 2018-09-05 10:46:18 +0200 | [diff] [blame] | 13 | #include <cstdio> |
| 14 | #include <string> |
Yves Gerey | 3e70781 | 2018-11-28 16:47:49 +0100 | [diff] [blame] | 15 | #include <vector> |
Magnus Jedvert | 10e829a | 2018-09-05 10:46:18 +0200 | [diff] [blame] | 16 | |
Steve Anton | 68586e8 | 2018-12-13 17:41:25 -0800 | [diff] [blame] | 17 | #include "absl/strings/match.h" |
Magnus Jedvert | 10e829a | 2018-09-05 10:46:18 +0200 | [diff] [blame] | 18 | #include "absl/types/optional.h" |
| 19 | #include "api/video/i420_buffer.h" |
Yves Gerey | 3e70781 | 2018-11-28 16:47:49 +0100 | [diff] [blame] | 20 | #include "rtc_base/checks.h" |
Magnus Jedvert | 10e829a | 2018-09-05 10:46:18 +0200 | [diff] [blame] | 21 | #include "rtc_base/logging.h" |
Steve Anton | 10542f2 | 2019-01-11 09:11:00 -0800 | [diff] [blame] | 22 | #include "rtc_base/ref_counted_object.h" |
| 23 | #include "rtc_base/string_encode.h" |
Magnus Jedvert | 10e829a | 2018-09-05 10:46:18 +0200 | [diff] [blame] | 24 | #include "rtc_base/string_to_number.h" |
Magnus Jedvert | 10e829a | 2018-09-05 10:46:18 +0200 | [diff] [blame] | 25 | |
| 26 | namespace webrtc { |
| 27 | namespace test { |
| 28 | |
| 29 | namespace { |
| 30 | |
Hans Wennborg | b4f7ab1 | 2019-02-13 09:13:23 +0100 | [diff] [blame] | 31 | bool ReadBytes(uint8_t* dst, size_t n, FILE* file) { |
| 32 | return fread(reinterpret_cast<char*>(dst), /* size= */ 1, n, file) == n; |
| 33 | } |
| 34 | |
Magnus Jedvert | 10e829a | 2018-09-05 10:46:18 +0200 | [diff] [blame] | 35 | // Common base class for .yuv and .y4m files. |
| 36 | class VideoFile : public Video { |
| 37 | public: |
| 38 | VideoFile(int width, |
| 39 | int height, |
| 40 | const std::vector<fpos_t>& frame_positions, |
| 41 | FILE* file) |
| 42 | : width_(width), |
| 43 | height_(height), |
| 44 | frame_positions_(frame_positions), |
| 45 | file_(file) {} |
| 46 | |
| 47 | ~VideoFile() override { fclose(file_); } |
| 48 | |
| 49 | size_t number_of_frames() const override { return frame_positions_.size(); } |
| 50 | int width() const override { return width_; } |
| 51 | int height() const override { return height_; } |
| 52 | |
| 53 | rtc::scoped_refptr<I420BufferInterface> GetFrame( |
| 54 | size_t frame_index) const override { |
| 55 | RTC_CHECK_LT(frame_index, frame_positions_.size()); |
| 56 | |
| 57 | fsetpos(file_, &frame_positions_[frame_index]); |
| 58 | rtc::scoped_refptr<I420Buffer> buffer = I420Buffer::Create(width_, height_); |
Magnus Jedvert | 10e829a | 2018-09-05 10:46:18 +0200 | [diff] [blame] | 59 | |
Hans Wennborg | b4f7ab1 | 2019-02-13 09:13:23 +0100 | [diff] [blame] | 60 | if (!ReadBytes(buffer->MutableDataY(), width_ * height_, file_) || |
| 61 | !ReadBytes(buffer->MutableDataU(), |
| 62 | buffer->ChromaWidth() * buffer->ChromaHeight(), file_) || |
| 63 | !ReadBytes(buffer->MutableDataV(), |
| 64 | buffer->ChromaWidth() * buffer->ChromaHeight(), file_)) { |
Magnus Jedvert | 10e829a | 2018-09-05 10:46:18 +0200 | [diff] [blame] | 65 | RTC_LOG(LS_ERROR) << "Could not read YUV data for frame " << frame_index; |
| 66 | return nullptr; |
| 67 | } |
Hans Wennborg | b4f7ab1 | 2019-02-13 09:13:23 +0100 | [diff] [blame] | 68 | |
Magnus Jedvert | 10e829a | 2018-09-05 10:46:18 +0200 | [diff] [blame] | 69 | return buffer; |
| 70 | } |
| 71 | |
| 72 | private: |
| 73 | const int width_; |
| 74 | const int height_; |
| 75 | const std::vector<fpos_t> frame_positions_; |
| 76 | FILE* const file_; |
| 77 | }; |
| 78 | |
| 79 | } // namespace |
| 80 | |
| 81 | Video::Iterator::Iterator(const rtc::scoped_refptr<const Video>& video, |
| 82 | size_t index) |
| 83 | : video_(video), index_(index) {} |
| 84 | |
| 85 | Video::Iterator::Iterator(const Video::Iterator& other) = default; |
| 86 | Video::Iterator::Iterator(Video::Iterator&& other) = default; |
| 87 | Video::Iterator& Video::Iterator::operator=(Video::Iterator&&) = default; |
| 88 | Video::Iterator& Video::Iterator::operator=(const Video::Iterator&) = default; |
| 89 | Video::Iterator::~Iterator() = default; |
| 90 | |
| 91 | rtc::scoped_refptr<I420BufferInterface> Video::Iterator::operator*() const { |
| 92 | return video_->GetFrame(index_); |
| 93 | } |
| 94 | bool Video::Iterator::operator==(const Video::Iterator& other) const { |
| 95 | return index_ == other.index_; |
| 96 | } |
| 97 | bool Video::Iterator::operator!=(const Video::Iterator& other) const { |
| 98 | return !(*this == other); |
| 99 | } |
| 100 | |
| 101 | Video::Iterator Video::Iterator::operator++(int) { |
| 102 | const Iterator copy = *this; |
| 103 | ++*this; |
| 104 | return copy; |
| 105 | } |
| 106 | |
| 107 | Video::Iterator& Video::Iterator::operator++() { |
| 108 | ++index_; |
| 109 | return *this; |
| 110 | } |
| 111 | |
| 112 | Video::Iterator Video::begin() const { |
| 113 | return Iterator(this, 0); |
| 114 | } |
| 115 | |
| 116 | Video::Iterator Video::end() const { |
| 117 | return Iterator(this, number_of_frames()); |
| 118 | } |
| 119 | |
| 120 | rtc::scoped_refptr<Video> OpenY4mFile(const std::string& file_name) { |
| 121 | FILE* file = fopen(file_name.c_str(), "rb"); |
| 122 | if (file == nullptr) { |
| 123 | RTC_LOG(LS_ERROR) << "Could not open input file for reading: " << file_name; |
| 124 | return nullptr; |
| 125 | } |
| 126 | |
| 127 | int parse_file_header_result = -1; |
Hans Wennborg | b4f7ab1 | 2019-02-13 09:13:23 +0100 | [diff] [blame] | 128 | if (fscanf(file, "YUV4MPEG2 %n", &parse_file_header_result) != 0 || |
| 129 | parse_file_header_result == -1) { |
Magnus Jedvert | 10e829a | 2018-09-05 10:46:18 +0200 | [diff] [blame] | 130 | RTC_LOG(LS_ERROR) << "File " << file_name |
| 131 | << " does not start with YUV4MPEG2 header"; |
| 132 | return nullptr; |
| 133 | } |
| 134 | |
| 135 | std::string header_line; |
| 136 | while (true) { |
| 137 | const int c = fgetc(file); |
| 138 | if (c == EOF) { |
| 139 | RTC_LOG(LS_ERROR) << "Could not read header line"; |
| 140 | return nullptr; |
| 141 | } |
| 142 | if (c == '\n') |
| 143 | break; |
| 144 | header_line.push_back(static_cast<char>(c)); |
| 145 | } |
| 146 | |
| 147 | absl::optional<int> width; |
| 148 | absl::optional<int> height; |
| 149 | absl::optional<float> fps; |
| 150 | |
| 151 | std::vector<std::string> fields; |
| 152 | rtc::tokenize(header_line, ' ', &fields); |
| 153 | for (const std::string& field : fields) { |
| 154 | const char prefix = field.front(); |
| 155 | const std::string suffix = field.substr(1); |
| 156 | switch (prefix) { |
| 157 | case 'W': |
| 158 | width = rtc::StringToNumber<int>(suffix); |
| 159 | break; |
| 160 | case 'H': |
| 161 | height = rtc::StringToNumber<int>(suffix); |
| 162 | break; |
| 163 | case 'C': |
| 164 | if (suffix != "420" && suffix != "420mpeg2") { |
| 165 | RTC_LOG(LS_ERROR) |
| 166 | << "Does not support any other color space than I420 or " |
| 167 | "420mpeg2, but was: " |
| 168 | << suffix; |
| 169 | return nullptr; |
| 170 | } |
| 171 | break; |
| 172 | case 'F': { |
| 173 | std::vector<std::string> fraction; |
| 174 | rtc::tokenize(suffix, ':', &fraction); |
| 175 | if (fraction.size() == 2) { |
| 176 | const absl::optional<int> numerator = |
| 177 | rtc::StringToNumber<int>(fraction[0]); |
| 178 | const absl::optional<int> denominator = |
| 179 | rtc::StringToNumber<int>(fraction[1]); |
| 180 | if (numerator && denominator && *denominator != 0) |
| 181 | fps = *numerator / static_cast<float>(*denominator); |
| 182 | break; |
| 183 | } |
| 184 | } |
| 185 | } |
| 186 | } |
| 187 | if (!width || !height) { |
| 188 | RTC_LOG(LS_ERROR) << "Could not find width and height in file header"; |
| 189 | return nullptr; |
| 190 | } |
| 191 | if (!fps) { |
| 192 | RTC_LOG(LS_ERROR) << "Could not find fps in file header"; |
| 193 | return nullptr; |
| 194 | } |
| 195 | RTC_LOG(LS_INFO) << "Video has resolution: " << *width << "x" << *height |
| 196 | << " " << *fps << " fps"; |
| 197 | if (*width % 2 != 0 || *height % 2 != 0) { |
| 198 | RTC_LOG(LS_ERROR) |
| 199 | << "Only supports even width/height so that chroma size is a " |
| 200 | "whole number."; |
| 201 | return nullptr; |
| 202 | } |
| 203 | |
| 204 | const int i420_frame_size = 3 * *width * *height / 2; |
| 205 | std::vector<fpos_t> frame_positions; |
| 206 | while (true) { |
| 207 | int parse_frame_header_result = -1; |
Hans Wennborg | b4f7ab1 | 2019-02-13 09:13:23 +0100 | [diff] [blame] | 208 | if (fscanf(file, "FRAME\n%n", &parse_frame_header_result) != 0 || |
| 209 | parse_frame_header_result == -1) { |
Magnus Jedvert | 10e829a | 2018-09-05 10:46:18 +0200 | [diff] [blame] | 210 | if (!feof(file)) { |
| 211 | RTC_LOG(LS_ERROR) << "Did not find FRAME header, ignoring rest of file"; |
| 212 | } |
| 213 | break; |
| 214 | } |
| 215 | fpos_t pos; |
| 216 | fgetpos(file, &pos); |
| 217 | frame_positions.push_back(pos); |
| 218 | // Skip over YUV pixel data. |
| 219 | fseek(file, i420_frame_size, SEEK_CUR); |
| 220 | } |
| 221 | if (frame_positions.empty()) { |
| 222 | RTC_LOG(LS_ERROR) << "Could not find any frames in the file"; |
| 223 | return nullptr; |
| 224 | } |
| 225 | RTC_LOG(LS_INFO) << "Video has " << frame_positions.size() << " frames"; |
| 226 | |
| 227 | return new rtc::RefCountedObject<VideoFile>(*width, *height, frame_positions, |
| 228 | file); |
| 229 | } |
| 230 | |
| 231 | rtc::scoped_refptr<Video> OpenYuvFile(const std::string& file_name, |
| 232 | int width, |
| 233 | int height) { |
| 234 | FILE* file = fopen(file_name.c_str(), "rb"); |
| 235 | if (file == nullptr) { |
| 236 | RTC_LOG(LS_ERROR) << "Could not open input file for reading: " << file_name; |
| 237 | return nullptr; |
| 238 | } |
| 239 | |
| 240 | if (width % 2 != 0 || height % 2 != 0) { |
| 241 | RTC_LOG(LS_ERROR) |
| 242 | << "Only supports even width/height so that chroma size is a " |
| 243 | "whole number."; |
| 244 | return nullptr; |
| 245 | } |
| 246 | |
| 247 | // Seek to end of file. |
| 248 | fseek(file, 0, SEEK_END); |
| 249 | const size_t file_size = ftell(file); |
| 250 | // Seek back to beginning of file. |
| 251 | fseek(file, 0, SEEK_SET); |
| 252 | |
| 253 | const int i420_frame_size = 3 * width * height / 2; |
| 254 | const size_t number_of_frames = file_size / i420_frame_size; |
| 255 | |
| 256 | std::vector<fpos_t> frame_positions; |
| 257 | for (size_t i = 0; i < number_of_frames; ++i) { |
| 258 | fpos_t pos; |
| 259 | fgetpos(file, &pos); |
| 260 | frame_positions.push_back(pos); |
| 261 | fseek(file, i420_frame_size, SEEK_CUR); |
| 262 | } |
| 263 | if (frame_positions.empty()) { |
| 264 | RTC_LOG(LS_ERROR) << "Could not find any frames in the file"; |
| 265 | return nullptr; |
| 266 | } |
| 267 | RTC_LOG(LS_INFO) << "Video has " << frame_positions.size() << " frames"; |
| 268 | |
| 269 | return new rtc::RefCountedObject<VideoFile>(width, height, frame_positions, |
| 270 | file); |
| 271 | } |
| 272 | |
| 273 | rtc::scoped_refptr<Video> OpenYuvOrY4mFile(const std::string& file_name, |
| 274 | int width, |
| 275 | int height) { |
Steve Anton | 68586e8 | 2018-12-13 17:41:25 -0800 | [diff] [blame] | 276 | if (absl::EndsWith(file_name, ".yuv")) |
Magnus Jedvert | 10e829a | 2018-09-05 10:46:18 +0200 | [diff] [blame] | 277 | return OpenYuvFile(file_name, width, height); |
Steve Anton | 68586e8 | 2018-12-13 17:41:25 -0800 | [diff] [blame] | 278 | if (absl::EndsWith(file_name, ".y4m")) |
Magnus Jedvert | b468ace | 2018-09-05 16:11:48 +0200 | [diff] [blame] | 279 | return OpenY4mFile(file_name); |
Magnus Jedvert | 10e829a | 2018-09-05 10:46:18 +0200 | [diff] [blame] | 280 | |
| 281 | RTC_LOG(LS_ERROR) << "Video file does not end in either .yuv or .y4m: " |
| 282 | << file_name; |
| 283 | |
| 284 | return nullptr; |
| 285 | } |
| 286 | |
| 287 | } // namespace test |
| 288 | } // namespace webrtc |