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Side by Side Diff: services/media/framework/lpcm_util.cc

Issue 1902183002: Motown: Change media type (stream type) representation (Closed) Base URL: https://github.com/domokit/mojo.git@master
Patch Set: Changes per review feedback. Created 4 years, 8 months ago
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1 // Copyright 2016 The Chromium Authors. All rights reserved. 1 // Copyright 2016 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/logging.h" 5 #include "base/logging.h"
6 #include "services/media/framework/formatting.h" 6 #include "services/media/framework/formatting.h"
7 #include "services/media/framework/lpcm_util.h" 7 #include "services/media/framework/lpcm_util.h"
8 8
9 namespace mojo { 9 namespace mojo {
10 namespace media { 10 namespace media {
11 11
12 // LpcmUtil implementation that processes samples of type T. 12 // LpcmUtil implementation that processes samples of type T.
13 template <typename T> 13 template <typename T>
14 class LpcmUtilImpl : public LpcmUtil { 14 class LpcmUtilImpl : public LpcmUtil {
15 public: 15 public:
16 ~LpcmUtilImpl(); 16 ~LpcmUtilImpl();
17 17
18 void Silence(void* buffer, size_t frame_count) const override; 18 void Silence(void* buffer, size_t frame_count) const override;
19 19
20 void Copy(const void* in, void* out, size_t frame_count) const override; 20 void Copy(const void* in, void* out, size_t frame_count) const override;
21 21
22 void Mix(const void* in, void* out, size_t frame_count) const override; 22 void Mix(const void* in, void* out, size_t frame_count) const override;
23 23
24 void Interleave(const void* in, 24 void Interleave(const void* in,
25 size_t in_byte_count, 25 size_t in_byte_count,
26 void* out, 26 void* out,
27 size_t frame_count) const override; 27 size_t frame_count) const override;
28 28
29 private: 29 private:
30 LpcmUtilImpl(const LpcmStreamType& stream_type); 30 LpcmUtilImpl(const AudioStreamType& stream_type);
31 31
32 LpcmStreamType stream_type_; 32 AudioStreamType stream_type_;
33 33
34 friend class LpcmUtil; 34 friend class LpcmUtil;
35 }; 35 };
36 36
37 std::unique_ptr<LpcmUtil> LpcmUtil::Create(const LpcmStreamType& stream_type) { 37 std::unique_ptr<LpcmUtil> LpcmUtil::Create(const AudioStreamType& stream_type) {
38 LpcmUtil* result; 38 LpcmUtil* result;
39 switch (stream_type.sample_format()) { 39 switch (stream_type.sample_format()) {
40 case LpcmStreamType::SampleFormat::kUnsigned8: 40 case AudioStreamType::SampleFormat::kUnsigned8:
41 case LpcmStreamType::SampleFormat::kAny:
42 result = new LpcmUtilImpl<uint8_t>(stream_type); 41 result = new LpcmUtilImpl<uint8_t>(stream_type);
43 break; 42 break;
44 case LpcmStreamType::SampleFormat::kSigned16: 43 case AudioStreamType::SampleFormat::kSigned16:
45 result = new LpcmUtilImpl<int16_t>(stream_type); 44 result = new LpcmUtilImpl<int16_t>(stream_type);
46 break; 45 break;
47 case LpcmStreamType::SampleFormat::kSigned24In32: 46 case AudioStreamType::SampleFormat::kSigned24In32:
48 result = new LpcmUtilImpl<int32_t>(stream_type); 47 result = new LpcmUtilImpl<int32_t>(stream_type);
49 break; 48 break;
50 case LpcmStreamType::SampleFormat::kFloat: 49 case AudioStreamType::SampleFormat::kFloat:
51 result = new LpcmUtilImpl<float>(stream_type); 50 result = new LpcmUtilImpl<float>(stream_type);
52 break; 51 break;
53 default: 52 default:
54 NOTREACHED() << "unsupported sample format " 53 NOTREACHED() << "unsupported sample format "
55 << stream_type.sample_format(); 54 << stream_type.sample_format();
56 result = nullptr; 55 result = nullptr;
57 break; 56 break;
58 } 57 }
59 58
60 return std::unique_ptr<LpcmUtil>(result); 59 return std::unique_ptr<LpcmUtil>(result);
61 } 60 }
62 61
63 template <typename T> 62 template <typename T>
64 LpcmUtilImpl<T>::LpcmUtilImpl(const LpcmStreamType& stream_type) 63 LpcmUtilImpl<T>::LpcmUtilImpl(const AudioStreamType& stream_type)
65 : stream_type_(stream_type) {} 64 : stream_type_(stream_type) {}
66 65
67 template <typename T> 66 template <typename T>
68 LpcmUtilImpl<T>::~LpcmUtilImpl() {} 67 LpcmUtilImpl<T>::~LpcmUtilImpl() {}
69 68
70 template <typename T> 69 template <typename T>
71 void LpcmUtilImpl<T>::Silence(void* buffer, size_t frame_count) const { 70 void LpcmUtilImpl<T>::Silence(void* buffer, size_t frame_count) const {
72 T* sample = reinterpret_cast<T*>(buffer); 71 T* sample = reinterpret_cast<T*>(buffer);
73 for (size_t sample_countdown = frame_count * stream_type_.channels(); 72 for (size_t sample_countdown = frame_count * stream_type_.channels();
74 sample_countdown != 0; --sample_countdown) { 73 sample_countdown != 0; --sample_countdown) {
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153 ++in_sample; 152 ++in_sample;
154 out_sample += channels; 153 out_sample += channels;
155 } 154 }
156 in_channel += in_channel_stride; 155 in_channel += in_channel_stride;
157 ++out_channel; 156 ++out_channel;
158 } 157 }
159 } 158 }
160 159
161 } // namespace media 160 } // namespace media
162 } // namespace mojo 161 } // namespace mojo
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