1 /* 2 * Copyright (c) 2012 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 "testing/gtest/include/gtest/gtest.h" 12 #include "webrtc/common_video/interface/i420_video_frame.h" 13 #include "webrtc/common_video/interface/video_image.h" 14 #include "webrtc/common_video/libyuv/include/webrtc_libyuv.h" 15 #include "webrtc/modules/video_coding/codecs/vp8/include/vp8.h" 16 #include "webrtc/system_wrappers/interface/scoped_ptr.h" 17 #include "webrtc/system_wrappers/interface/tick_util.h" 18 #include "webrtc/test/testsupport/fileutils.h" 19 #include "webrtc/test/testsupport/metrics/video_metrics.h" 20 #include "webrtc/tools/simple_command_line_parser.h" 21 22 class Vp8SequenceCoderEncodeCallback : public webrtc::EncodedImageCallback { 23 public: 24 explicit Vp8SequenceCoderEncodeCallback(FILE* encoded_file) 25 : encoded_file_(encoded_file), 26 encoded_bytes_(0) {} 27 ~Vp8SequenceCoderEncodeCallback(); 28 int Encoded(webrtc::EncodedImage& encoded_image, 29 const webrtc::CodecSpecificInfo* codecSpecificInfo, 30 const webrtc::RTPFragmentationHeader*); 31 // Returns the encoded image. 32 webrtc::EncodedImage encoded_image() { return encoded_image_; } 33 int encoded_bytes() { return encoded_bytes_; } 34 private: 35 webrtc::EncodedImage encoded_image_; 36 FILE* encoded_file_; 37 int encoded_bytes_; 38 }; 39 40 Vp8SequenceCoderEncodeCallback::~Vp8SequenceCoderEncodeCallback() { 41 delete [] encoded_image_._buffer; 42 encoded_image_._buffer = NULL; 43 } 44 int Vp8SequenceCoderEncodeCallback::Encoded( 45 webrtc::EncodedImage& encoded_image, 46 const webrtc::CodecSpecificInfo* codecSpecificInfo, 47 const webrtc::RTPFragmentationHeader* fragmentation) { 48 if (encoded_image_._size < encoded_image._size) { 49 delete [] encoded_image_._buffer; 50 encoded_image_._buffer = NULL; 51 encoded_image_._buffer = new uint8_t[encoded_image._size]; 52 encoded_image_._size = encoded_image._size; 53 } 54 memcpy(encoded_image_._buffer, encoded_image._buffer, encoded_image._size); 55 encoded_image_._length = encoded_image._length; 56 if (encoded_file_ != NULL) { 57 if (fwrite(encoded_image._buffer, 1, encoded_image._length, 58 encoded_file_) != encoded_image._length) { 59 return -1; 60 } 61 } 62 encoded_bytes_ += encoded_image_._length; 63 return 0; 64 } 65 66 // TODO(mikhal): Add support for varying the frame size. 67 class Vp8SequenceCoderDecodeCallback : public webrtc::DecodedImageCallback { 68 public: 69 explicit Vp8SequenceCoderDecodeCallback(FILE* decoded_file) 70 : decoded_file_(decoded_file) {} 71 int Decoded(webrtc::I420VideoFrame& frame); 72 bool DecodeComplete(); 73 74 private: 75 FILE* decoded_file_; 76 }; 77 78 int Vp8SequenceCoderDecodeCallback::Decoded(webrtc::I420VideoFrame& image) { 79 EXPECT_EQ(0, webrtc::PrintI420VideoFrame(image, decoded_file_)); 80 return 0; 81 } 82 83 int SequenceCoder(webrtc::test::CommandLineParser& parser) { 84 int width = strtol((parser.GetFlag("w")).c_str(), NULL, 10); 85 int height = strtol((parser.GetFlag("h")).c_str(), NULL, 10); 86 int framerate = strtol((parser.GetFlag("f")).c_str(), NULL, 10); 87 88 if (width <= 0 || height <= 0 || framerate <= 0) { 89 fprintf(stderr, "Error: Resolution cannot be <= 0!\n"); 90 return -1; 91 } 92 int target_bitrate = strtol((parser.GetFlag("b")).c_str(), NULL, 10); 93 if (target_bitrate <= 0) { 94 fprintf(stderr, "Error: Bit-rate cannot be <= 0!\n"); 95 return -1; 96 } 97 98 // SetUp 99 // Open input file. 100 std::string encoded_file_name = parser.GetFlag("encoded_file"); 101 FILE* encoded_file = fopen(encoded_file_name.c_str(), "wb"); 102 if (encoded_file == NULL) { 103 fprintf(stderr, "Error: Cannot open encoded file\n"); 104 return -1; 105 } 106 std::string input_file_name = parser.GetFlag("input_file"); 107 FILE* input_file = fopen(input_file_name.c_str(), "rb"); 108 if (input_file == NULL) { 109 fprintf(stderr, "Error: Cannot open input file\n"); 110 return -1; 111 } 112 // Open output file. 113 std::string output_file_name = parser.GetFlag("output_file"); 114 FILE* output_file = fopen(output_file_name.c_str(), "wb"); 115 if (output_file == NULL) { 116 fprintf(stderr, "Error: Cannot open output file\n"); 117 return -1; 118 } 119 120 // Get range of frames: will encode num_frames following start_frame). 121 int start_frame = strtol((parser.GetFlag("start_frame")).c_str(), NULL, 10); 122 int num_frames = strtol((parser.GetFlag("num_frames")).c_str(), NULL, 10); 123 124 // Codec SetUp. 125 webrtc::VideoCodec inst; 126 memset(&inst, 0, sizeof(inst)); 127 webrtc::VP8Encoder* encoder = webrtc::VP8Encoder::Create(); 128 webrtc::VP8Decoder* decoder = webrtc::VP8Decoder::Create(); 129 inst.codecType = webrtc::kVideoCodecVP8; 130 inst.codecSpecific.VP8.feedbackModeOn = false; 131 inst.codecSpecific.VP8.denoisingOn = true; 132 inst.maxFramerate = framerate; 133 inst.startBitrate = target_bitrate; 134 inst.maxBitrate = 8000; 135 inst.width = width; 136 inst.height = height; 137 138 if (encoder->InitEncode(&inst, 1, 1440) < 0) { 139 fprintf(stderr, "Error: Cannot initialize vp8 encoder\n"); 140 return -1; 141 } 142 EXPECT_EQ(0, decoder->InitDecode(&inst, 1)); 143 webrtc::I420VideoFrame input_frame; 144 unsigned int length = webrtc::CalcBufferSize(webrtc::kI420, width, height); 145 webrtc::scoped_ptr<uint8_t[]> frame_buffer(new uint8_t[length]); 146 147 int half_width = (width + 1) / 2; 148 // Set and register callbacks. 149 Vp8SequenceCoderEncodeCallback encoder_callback(encoded_file); 150 encoder->RegisterEncodeCompleteCallback(&encoder_callback); 151 Vp8SequenceCoderDecodeCallback decoder_callback(output_file); 152 decoder->RegisterDecodeCompleteCallback(&decoder_callback); 153 // Read->Encode->Decode sequence. 154 // num_frames = -1 implies unlimited encoding (entire sequence). 155 int64_t starttime = webrtc::TickTime::MillisecondTimestamp(); 156 int frame_cnt = 1; 157 int frames_processed = 0; 158 input_frame.CreateEmptyFrame(width, height, width, half_width, half_width); 159 while (!feof(input_file) && 160 (num_frames == -1 || frames_processed < num_frames)) { 161 if (fread(frame_buffer.get(), 1, length, input_file) != length) 162 continue; 163 if (frame_cnt >= start_frame) { 164 webrtc::ConvertToI420(webrtc::kI420, frame_buffer.get(), 0, 0, 165 width, height, 0, webrtc::kRotateNone, 166 &input_frame); 167 encoder->Encode(input_frame, NULL, NULL); 168 decoder->Decode(encoder_callback.encoded_image(), false, NULL); 169 ++frames_processed; 170 } 171 ++frame_cnt; 172 } 173 printf("\nProcessed %d frames\n", frames_processed); 174 int64_t endtime = webrtc::TickTime::MillisecondTimestamp(); 175 int64_t totalExecutionTime = endtime - starttime; 176 printf("Total execution time: %.2lf ms\n", 177 static_cast<double>(totalExecutionTime)); 178 int sum_enc_bytes = encoder_callback.encoded_bytes(); 179 double actual_bit_rate = 8.0 * sum_enc_bytes / 180 (frame_cnt / inst.maxFramerate); 181 printf("Actual bitrate: %f kbps\n", actual_bit_rate / 1000); 182 webrtc::test::QualityMetricsResult psnr_result, ssim_result; 183 EXPECT_EQ(0, webrtc::test::I420MetricsFromFiles( 184 input_file_name.c_str(), output_file_name.c_str(), 185 inst.width, inst.height, 186 &psnr_result, &ssim_result)); 187 printf("PSNR avg: %f[dB], min: %f[dB]\nSSIM avg: %f, min: %f\n", 188 psnr_result.average, psnr_result.min, 189 ssim_result.average, ssim_result.min); 190 return frame_cnt; 191 } 192 193 int main(int argc, char** argv) { 194 std::string program_name = argv[0]; 195 std::string usage = "Encode and decodes a video sequence, and writes" 196 "results to a file.\n" 197 "Example usage:\n" + program_name + " functionality" 198 " --w=352 --h=288 --input_file=input.yuv --output_file=output.yuv " 199 " Command line flags:\n" 200 " - width(int): The width of the input file. Default: 352\n" 201 " - height(int): The height of the input file. Default: 288\n" 202 " - input_file(string): The YUV file to encode." 203 " Default: foreman.yuv\n" 204 " - encoded_file(string): The vp8 encoded file (encoder output)." 205 " Default: vp8_encoded.vp8\n" 206 " - output_file(string): The yuv decoded file (decoder output)." 207 " Default: vp8_decoded.yuv\n." 208 " - start_frame - frame number in which encoding will begin. Default: 0" 209 " - num_frames - Number of frames to be processed. " 210 " Default: -1 (entire sequence)."; 211 212 webrtc::test::CommandLineParser parser; 213 214 // Init the parser and set the usage message. 215 parser.Init(argc, argv); 216 217 // Reset flags. 218 parser.SetFlag("w", "352"); 219 parser.SetFlag("h", "288"); 220 parser.SetFlag("f", "30"); 221 parser.SetFlag("b", "500"); 222 parser.SetFlag("start_frame", "0"); 223 parser.SetFlag("num_frames", "-1"); 224 parser.SetFlag("output_file", webrtc::test::OutputPath() + "vp8_decoded.yuv"); 225 parser.SetFlag("encoded_file", 226 webrtc::test::OutputPath() + "vp8_encoded.vp8"); 227 parser.SetFlag("input_file", webrtc::test::ResourcePath("foreman_cif", 228 "yuv")); 229 230 parser.ProcessFlags(); 231 if (parser.GetFlag("help") == "true") { 232 parser.PrintUsageMessage(); 233 } 234 parser.PrintEnteredFlags(); 235 236 return SequenceCoder(parser); 237 } 238
