1 /* 2 * Copyright (c) 2014 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/modules/audio_coding/codecs/tools/audio_codec_speed_test.h" 12 13 #include "testing/gtest/include/gtest/gtest.h" 14 #include "webrtc/test/testsupport/fileutils.h" 15 16 using ::std::tr1::get; 17 18 namespace webrtc { 19 20 AudioCodecSpeedTest::AudioCodecSpeedTest(int block_duration_ms, 21 int input_sampling_khz, 22 int output_sampling_khz) 23 : block_duration_ms_(block_duration_ms), 24 input_sampling_khz_(input_sampling_khz), 25 output_sampling_khz_(output_sampling_khz), 26 input_length_sample_(block_duration_ms_ * input_sampling_khz_), 27 output_length_sample_(block_duration_ms_ * output_sampling_khz_), 28 data_pointer_(0), 29 loop_length_samples_(0), 30 max_bytes_(0), 31 encoded_bytes_(0), 32 encoding_time_ms_(0.0), 33 decoding_time_ms_(0.0), 34 out_file_(NULL) { 35 } 36 37 void AudioCodecSpeedTest::SetUp() { 38 channels_ = get<0>(GetParam()); 39 bit_rate_ = get<1>(GetParam()); 40 in_filename_ = test::ResourcePath(get<2>(GetParam()), get<3>(GetParam())); 41 save_out_data_ = get<4>(GetParam()); 42 43 FILE* fp = fopen(in_filename_.c_str(), "rb"); 44 assert(fp != NULL); 45 46 // Obtain file size. 47 fseek(fp, 0, SEEK_END); 48 loop_length_samples_ = ftell(fp) / sizeof(int16_t); 49 rewind(fp); 50 51 // Allocate memory to contain the whole file. 52 in_data_.reset(new int16_t[loop_length_samples_ + 53 input_length_sample_ * channels_]); 54 55 data_pointer_ = 0; 56 57 // Copy the file into the buffer. 58 ASSERT_EQ(fread(&in_data_[0], sizeof(int16_t), loop_length_samples_, fp), 59 loop_length_samples_); 60 fclose(fp); 61 62 // Add an extra block length of samples to the end of the array, starting 63 // over again from the beginning of the array. This is done to simplify 64 // the reading process when reading over the end of the loop. 65 memcpy(&in_data_[loop_length_samples_], &in_data_[0], 66 input_length_sample_ * channels_ * sizeof(int16_t)); 67 68 max_bytes_ = input_length_sample_ * channels_ * sizeof(int16_t); 69 out_data_.reset(new int16_t[output_length_sample_ * channels_]); 70 bit_stream_.reset(new uint8_t[max_bytes_]); 71 72 if (save_out_data_) { 73 std::string out_filename = 74 ::testing::UnitTest::GetInstance()->current_test_info()->name(); 75 76 // Erase '/' 77 size_t found; 78 while ((found = out_filename.find('/')) != std::string::npos) 79 out_filename.replace(found, 1, "_"); 80 81 out_filename = test::OutputPath() + out_filename + ".pcm"; 82 83 out_file_ = fopen(out_filename.c_str(), "wb"); 84 assert(out_file_ != NULL); 85 86 printf("Output to be saved in %s.\n", out_filename.c_str()); 87 } 88 } 89 90 void AudioCodecSpeedTest::TearDown() { 91 if (save_out_data_) { 92 fclose(out_file_); 93 } 94 } 95 96 void AudioCodecSpeedTest::EncodeDecode(size_t audio_duration_sec) { 97 size_t time_now_ms = 0; 98 float time_ms; 99 100 printf("Coding %d kHz-sampled %d-channel audio at %d bps ...\n", 101 input_sampling_khz_, channels_, bit_rate_); 102 103 while (time_now_ms < audio_duration_sec * 1000) { 104 // Encode & decode. 105 time_ms = EncodeABlock(&in_data_[data_pointer_], &bit_stream_[0], 106 max_bytes_, &encoded_bytes_); 107 encoding_time_ms_ += time_ms; 108 time_ms = DecodeABlock(&bit_stream_[0], encoded_bytes_, &out_data_[0]); 109 decoding_time_ms_ += time_ms; 110 if (save_out_data_) { 111 fwrite(&out_data_[0], sizeof(int16_t), 112 output_length_sample_ * channels_, out_file_); 113 } 114 data_pointer_ = (data_pointer_ + input_length_sample_ * channels_) % 115 loop_length_samples_; 116 time_now_ms += block_duration_ms_; 117 } 118 119 printf("Encoding: %.2f%% real time,\nDecoding: %.2f%% real time.\n", 120 (encoding_time_ms_ / audio_duration_sec) / 10.0, 121 (decoding_time_ms_ / audio_duration_sec) / 10.0); 122 } 123 124 } // namespace webrtc 125
