15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <limits> 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/basictypes.h" 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/memory/scoped_ptr.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "media/audio/audio_parameters.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "media/audio/simple_sources.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "media/base/audio_bus.h" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "testing/gtest/include/gtest/gtest.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace media { 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Validate that the SineWaveAudioSource writes the expected values. 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)TEST(SimpleSources, SineWaveAudioSource) { 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static const uint32 samples = 1024; 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static const uint32 bytes_per_sample = 2; 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static const int freq = 200; 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AudioParameters params( 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO, 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AudioParameters::kTelephoneSampleRate, bytes_per_sample * 8, samples); 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SineWaveAudioSource source(1, freq, params.sample_rate()); 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_ptr<AudioBus> audio_bus = AudioBus::Create(params); 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) source.OnMoreData(audio_bus.get(), AudioBuffersState()); 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(1, source.callbacks()); 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(0, source.errors()); 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint32 half_period = AudioParameters::kTelephoneSampleRate / (freq * 2); 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Spot test positive incursion of sine wave. 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_NEAR(0, audio_bus->channel(0)[0], 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::numeric_limits<float>::epsilon()); 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_FLOAT_EQ(0.15643446f, audio_bus->channel(0)[1]); 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_LT(audio_bus->channel(0)[1], audio_bus->channel(0)[2]); 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_LT(audio_bus->channel(0)[2], audio_bus->channel(0)[3]); 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Spot test negative incursion of sine wave. 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_NEAR(0, audio_bus->channel(0)[half_period], 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::numeric_limits<float>::epsilon()); 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_FLOAT_EQ(-0.15643446f, audio_bus->channel(0)[half_period + 1]); 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_GT(audio_bus->channel(0)[half_period + 1], 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) audio_bus->channel(0)[half_period + 2]); 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_GT(audio_bus->channel(0)[half_period + 2], 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) audio_bus->channel(0)[half_period + 3]); 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)TEST(SimpleSources, SineWaveAudioCapped) { 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SineWaveAudioSource source(1, 200, AudioParameters::kTelephoneSampleRate); 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static const int kSampleCap = 100; 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) source.CapSamples(kSampleCap); 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_ptr<AudioBus> audio_bus = AudioBus::Create(1, 2 * kSampleCap); 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(source.OnMoreData( 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) audio_bus.get(), AudioBuffersState()), kSampleCap); 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(1, source.callbacks()); 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(source.OnMoreData(audio_bus.get(), AudioBuffersState()), 0); 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(2, source.callbacks()); 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) source.Reset(); 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(source.OnMoreData( 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) audio_bus.get(), AudioBuffersState()), kSampleCap); 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(3, source.callbacks()); 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(0, source.errors()); 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)TEST(SimpleSources, OnError) { 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SineWaveAudioSource source(1, 200, AudioParameters::kTelephoneSampleRate); 722a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) source.OnError(NULL); 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(1, source.errors()); 742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) source.OnError(NULL); 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(2, source.errors()); 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace media 79