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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "base/memory/scoped_ptr.h" | 5 #include "base/memory/scoped_ptr.h" |
6 #include "media/base/audio_buffer.h" | 6 #include "media/base/audio_buffer.h" |
7 #include "media/base/audio_bus.h" | 7 #include "media/base/audio_bus.h" |
8 #include "media/base/audio_splicer.h" | 8 #include "media/base/audio_splicer.h" |
9 #include "media/base/audio_timestamp_helper.h" | 9 #include "media/base/audio_timestamp_helper.h" |
10 #include "media/base/buffers.h" | 10 #include "media/base/buffers.h" |
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108 // Verify the actual crossfade. | 108 // Verify the actual crossfade. |
109 const int frames = crossfade_output->frame_count(); | 109 const int frames = crossfade_output->frame_count(); |
110 float overlapped_value = GetValue(overlapped_buffer_1); | 110 float overlapped_value = GetValue(overlapped_buffer_1); |
111 const float overlapping_value = GetValue(overlapping_buffer); | 111 const float overlapping_value = GetValue(overlapping_buffer); |
112 scoped_ptr<AudioBus> bus = AudioBus::Create(kChannels, frames); | 112 scoped_ptr<AudioBus> bus = AudioBus::Create(kChannels, frames); |
113 crossfade_output->ReadFrames(frames, 0, 0, bus.get()); | 113 crossfade_output->ReadFrames(frames, 0, 0, bus.get()); |
114 for (int ch = 0; ch < crossfade_output->channel_count(); ++ch) { | 114 for (int ch = 0; ch < crossfade_output->channel_count(); ++ch) { |
115 float cf_ratio = 0; | 115 float cf_ratio = 0; |
116 const float cf_increment = 1.0f / frames; | 116 const float cf_increment = 1.0f / frames; |
117 for (int i = 0; i < frames; ++i, cf_ratio += cf_increment) { | 117 for (int i = 0; i < frames; ++i, cf_ratio += cf_increment) { |
118 if (overlapped_buffer_2 && i >= second_overlap_index) | 118 if (overlapped_buffer_2.get() && i >= second_overlap_index) |
119 overlapped_value = GetValue(overlapped_buffer_2); | 119 overlapped_value = GetValue(overlapped_buffer_2); |
120 const float actual = bus->channel(ch)[i]; | 120 const float actual = bus->channel(ch)[i]; |
121 const float expected = | 121 const float expected = |
122 (1.0f - cf_ratio) * overlapped_value + cf_ratio * overlapping_value; | 122 (1.0f - cf_ratio) * overlapped_value + cf_ratio * overlapping_value; |
123 ASSERT_FLOAT_EQ(expected, actual) << "i=" << i; | 123 ASSERT_FLOAT_EQ(expected, actual) << "i=" << i; |
124 } | 124 } |
125 } | 125 } |
126 } | 126 } |
127 | 127 |
128 bool AddInput(const scoped_refptr<AudioBuffer>& input) { | 128 bool AddInput(const scoped_refptr<AudioBuffer>& input) { |
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758 second_buffer->timestamp() + second_buffer->duration(); | 758 second_buffer->timestamp() + second_buffer->duration(); |
759 scoped_refptr<AudioBuffer> output = splicer_.GetNextBuffer(); | 759 scoped_refptr<AudioBuffer> output = splicer_.GetNextBuffer(); |
760 EXPECT_EQ(second_buffer_end_ts, output->timestamp()); | 760 EXPECT_EQ(second_buffer_end_ts, output->timestamp()); |
761 EXPECT_EQ(third_buffer->duration() - | 761 EXPECT_EQ(third_buffer->duration() - |
762 (second_buffer_end_ts - third_buffer->timestamp()), | 762 (second_buffer_end_ts - third_buffer->timestamp()), |
763 output->duration()); | 763 output->duration()); |
764 EXPECT_TRUE(VerifyData(output, GetValue(third_buffer))); | 764 EXPECT_TRUE(VerifyData(output, GetValue(third_buffer))); |
765 } | 765 } |
766 | 766 |
767 } // namespace media | 767 } // namespace media |
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