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Side by Side Diff: content/browser/speech/audio_buffer.cc

Issue 1549113002: Switch to standard integer types in content/browser/. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: rebase Created 4 years, 12 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 #include "content/browser/speech/audio_buffer.h" 5 #include "content/browser/speech/audio_buffer.h"
6 6
7 #include "base/logging.h" 7 #include "base/logging.h"
8 8
9 namespace content { 9 namespace content {
10 10
11 AudioChunk::AudioChunk(int bytes_per_sample) 11 AudioChunk::AudioChunk(int bytes_per_sample)
12 : bytes_per_sample_(bytes_per_sample) { 12 : bytes_per_sample_(bytes_per_sample) {
13 } 13 }
14 14
15 AudioChunk::AudioChunk(size_t length, int bytes_per_sample) 15 AudioChunk::AudioChunk(size_t length, int bytes_per_sample)
16 : data_string_(length, '\0'), bytes_per_sample_(bytes_per_sample) { 16 : data_string_(length, '\0'), bytes_per_sample_(bytes_per_sample) {
17 DCHECK_EQ(length % bytes_per_sample, 0U); 17 DCHECK_EQ(length % bytes_per_sample, 0U);
18 } 18 }
19 19
20 AudioChunk::AudioChunk(const uint8* data, size_t length, int bytes_per_sample) 20 AudioChunk::AudioChunk(const uint8_t* data, size_t length, int bytes_per_sample)
21 : data_string_(reinterpret_cast<const char*>(data), length), 21 : data_string_(reinterpret_cast<const char*>(data), length),
22 bytes_per_sample_(bytes_per_sample) { 22 bytes_per_sample_(bytes_per_sample) {
23 DCHECK_EQ(length % bytes_per_sample, 0U); 23 DCHECK_EQ(length % bytes_per_sample, 0U);
24 } 24 }
25 25
26 bool AudioChunk::IsEmpty() const { 26 bool AudioChunk::IsEmpty() const {
27 return data_string_.empty(); 27 return data_string_.empty();
28 } 28 }
29 29
30 size_t AudioChunk::NumSamples() const { 30 size_t AudioChunk::NumSamples() const {
31 return data_string_.size() / bytes_per_sample_; 31 return data_string_.size() / bytes_per_sample_;
32 } 32 }
33 33
34 const std::string& AudioChunk::AsString() const { 34 const std::string& AudioChunk::AsString() const {
35 return data_string_; 35 return data_string_;
36 } 36 }
37 37
38 int16 AudioChunk::GetSample16(size_t index) const { 38 int16_t AudioChunk::GetSample16(size_t index) const {
39 DCHECK(index < (data_string_.size() / sizeof(int16))); 39 DCHECK(index < (data_string_.size() / sizeof(int16_t)));
40 return SamplesData16()[index]; 40 return SamplesData16()[index];
41 } 41 }
42 42
43 const int16* AudioChunk::SamplesData16() const { 43 const int16_t* AudioChunk::SamplesData16() const {
44 return reinterpret_cast<const int16*>(data_string_.data()); 44 return reinterpret_cast<const int16_t*>(data_string_.data());
45 } 45 }
46 46
47 AudioBuffer::AudioBuffer(int bytes_per_sample) 47 AudioBuffer::AudioBuffer(int bytes_per_sample)
48 : bytes_per_sample_(bytes_per_sample) { 48 : bytes_per_sample_(bytes_per_sample) {
49 DCHECK(bytes_per_sample == 1 || 49 DCHECK(bytes_per_sample == 1 ||
50 bytes_per_sample == 2 || 50 bytes_per_sample == 2 ||
51 bytes_per_sample == 4); 51 bytes_per_sample == 4);
52 } 52 }
53 53
54 AudioBuffer::~AudioBuffer() { 54 AudioBuffer::~AudioBuffer() {
55 Clear(); 55 Clear();
56 } 56 }
57 57
58 void AudioBuffer::Enqueue(const uint8* data, size_t length) { 58 void AudioBuffer::Enqueue(const uint8_t* data, size_t length) {
59 chunks_.push_back(new AudioChunk(data, length, bytes_per_sample_)); 59 chunks_.push_back(new AudioChunk(data, length, bytes_per_sample_));
60 } 60 }
61 61
62 scoped_refptr<AudioChunk> AudioBuffer::DequeueSingleChunk() { 62 scoped_refptr<AudioChunk> AudioBuffer::DequeueSingleChunk() {
63 DCHECK(!chunks_.empty()); 63 DCHECK(!chunks_.empty());
64 scoped_refptr<AudioChunk> chunk(chunks_.front()); 64 scoped_refptr<AudioChunk> chunk(chunks_.front());
65 chunks_.pop_front(); 65 chunks_.pop_front();
66 return chunk; 66 return chunk;
67 } 67 }
68 68
69 scoped_refptr<AudioChunk> AudioBuffer::DequeueAll() { 69 scoped_refptr<AudioChunk> AudioBuffer::DequeueAll() {
70 size_t resulting_length = 0; 70 size_t resulting_length = 0;
71 ChunksContainer::const_iterator it; 71 ChunksContainer::const_iterator it;
72 // In order to improve performance, calulate in advance the total length 72 // In order to improve performance, calulate in advance the total length
73 // and then copy the chunks. 73 // and then copy the chunks.
74 for (it = chunks_.begin(); it != chunks_.end(); ++it) { 74 for (it = chunks_.begin(); it != chunks_.end(); ++it) {
75 resulting_length += (*it)->AsString().length(); 75 resulting_length += (*it)->AsString().length();
76 } 76 }
77 scoped_refptr<AudioChunk> chunk( 77 scoped_refptr<AudioChunk> chunk(
78 new AudioChunk(resulting_length, bytes_per_sample_)); 78 new AudioChunk(resulting_length, bytes_per_sample_));
79 uint8* dest = chunk->writable_data(); 79 uint8_t* dest = chunk->writable_data();
80 for (it = chunks_.begin(); it != chunks_.end(); ++it) { 80 for (it = chunks_.begin(); it != chunks_.end(); ++it) {
81 memcpy(dest, (*it)->AsString().data(), (*it)->AsString().length()); 81 memcpy(dest, (*it)->AsString().data(), (*it)->AsString().length());
82 dest += (*it)->AsString().length(); 82 dest += (*it)->AsString().length();
83 } 83 }
84 Clear(); 84 Clear();
85 return chunk; 85 return chunk;
86 } 86 }
87 87
88 void AudioBuffer::Clear() { 88 void AudioBuffer::Clear() {
89 chunks_.clear(); 89 chunks_.clear();
90 } 90 }
91 91
92 bool AudioBuffer::IsEmpty() const { 92 bool AudioBuffer::IsEmpty() const {
93 return chunks_.empty(); 93 return chunks_.empty();
94 } 94 }
95 95
96 } // namespace content 96 } // namespace content
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