1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include <algorithm> 6 #include <cstdio> 7 #include <cstdlib> 8 #include <vector> 9 10 #include "base/basictypes.h" 11 #include "base/logging.h" 12 #include "media/cast/test/utility/audio_utility.h" 13 14 const size_t kSamplingFrequency = 48000; 15 16 int main(int argc, char **argv) { 17 if (argc < 3) { 18 fprintf(stderr, "Usage: %s <fps> <frames> >output.s16le\n", argv[0]); 19 exit(1); 20 } 21 int fps = atoi(argv[1]); 22 const uint32 frames = static_cast<uint32>(std::max(0, atoi(argv[2]))); 23 std::vector<float> samples(kSamplingFrequency / fps); 24 size_t num_samples = 0; 25 for (uint32 frame_id = 1; frame_id <= frames; frame_id++) { 26 CHECK(media::cast::EncodeTimestamp( 27 frame_id, num_samples, samples.size(), &samples.front())); 28 num_samples += samples.size(); 29 for (size_t i = 0; i < samples.size(); ++i) { 30 const int16 sample_s16 = static_cast<int16>(samples[i] * kint16max); 31 putchar(sample_s16 & 0xff); 32 putchar(sample_s16 >> 8); 33 putchar(sample_s16 & 0xff); 34 putchar(sample_s16 >> 8); 35 } 36 } 37 } 38
