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Side by Side Diff: media/base/multi_channel_resampler.h

Issue 2865113007: Remove ScopedVector from media/base/ (Closed)
Patch Set: added header file in text_renderer_unittest.cc Created 3 years, 7 months ago
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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 #ifndef MEDIA_BASE_MULTI_CHANNEL_RESAMPLER_H_ 5 #ifndef MEDIA_BASE_MULTI_CHANNEL_RESAMPLER_H_
6 #define MEDIA_BASE_MULTI_CHANNEL_RESAMPLER_H_ 6 #define MEDIA_BASE_MULTI_CHANNEL_RESAMPLER_H_
7 7
8 #include <stddef.h> 8 #include <stddef.h>
9 9
10 #include <memory> 10 #include <memory>
11 #include <vector> 11 #include <vector>
12 12
13 #include "base/callback.h" 13 #include "base/callback.h"
14 #include "base/macros.h" 14 #include "base/macros.h"
15 #include "base/memory/scoped_vector.h"
16 #include "media/base/sinc_resampler.h" 15 #include "media/base/sinc_resampler.h"
17 16
18 namespace media { 17 namespace media {
19 class AudioBus; 18 class AudioBus;
20 19
21 // MultiChannelResampler is a multi channel wrapper for SincResampler; allowing 20 // MultiChannelResampler is a multi channel wrapper for SincResampler; allowing
22 // high quality sample rate conversion of multiple channels at once. 21 // high quality sample rate conversion of multiple channels at once.
23 class MEDIA_EXPORT MultiChannelResampler { 22 class MEDIA_EXPORT MultiChannelResampler {
24 public: 23 public:
25 // Callback type for providing more data into the resampler. Expects AudioBus 24 // Callback type for providing more data into the resampler. Expects AudioBus
(...skipping 36 matching lines...) Expand 10 before | Expand all | Expand 10 after
62 61
63 private: 62 private:
64 // SincResampler::ReadCB implementation. ProvideInput() will be called for 63 // SincResampler::ReadCB implementation. ProvideInput() will be called for
65 // each channel (in channel order) as SincResampler needs more data. 64 // each channel (in channel order) as SincResampler needs more data.
66 void ProvideInput(int channel, int frames, float* destination); 65 void ProvideInput(int channel, int frames, float* destination);
67 66
68 // Source of data for resampling. 67 // Source of data for resampling.
69 ReadCB read_cb_; 68 ReadCB read_cb_;
70 69
71 // Each channel has its own high quality resampler. 70 // Each channel has its own high quality resampler.
72 ScopedVector<SincResampler> resamplers_; 71 std::vector<std::unique_ptr<SincResampler>> resamplers_;
73 72
74 // Buffers for audio data going into SincResampler from ReadCB. 73 // Buffers for audio data going into SincResampler from ReadCB.
75 std::unique_ptr<AudioBus> resampler_audio_bus_; 74 std::unique_ptr<AudioBus> resampler_audio_bus_;
76 75
77 // To avoid a memcpy() on the first channel we create a wrapped AudioBus where 76 // To avoid a memcpy() on the first channel we create a wrapped AudioBus where
78 // the first channel points to the |destination| provided to ProvideInput(). 77 // the first channel points to the |destination| provided to ProvideInput().
79 std::unique_ptr<AudioBus> wrapped_resampler_audio_bus_; 78 std::unique_ptr<AudioBus> wrapped_resampler_audio_bus_;
80 79
81 // The number of output frames that have successfully been processed during 80 // The number of output frames that have successfully been processed during
82 // the current Resample() call. 81 // the current Resample() call.
83 int output_frames_ready_; 82 int output_frames_ready_;
84 83
85 DISALLOW_COPY_AND_ASSIGN(MultiChannelResampler); 84 DISALLOW_COPY_AND_ASSIGN(MultiChannelResampler);
86 }; 85 };
87 86
88 } // namespace media 87 } // namespace media
89 88
90 #endif // MEDIA_BASE_MULTI_CHANNEL_RESAMPLER_H_ 89 #endif // MEDIA_BASE_MULTI_CHANNEL_RESAMPLER_H_
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