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

Issue 1534273002: Switch to standard integer types in media/. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: more Created 5 years ago
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1 // Copyright 2013 The Chromium Authors. All rights reserved. 1 // Copyright 2013 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_AUDIO_BUFFER_H_ 5 #ifndef MEDIA_BASE_AUDIO_BUFFER_H_
6 #define MEDIA_BASE_AUDIO_BUFFER_H_ 6 #define MEDIA_BASE_AUDIO_BUFFER_H_
7 7
8 #include <vector> 8 #include <vector>
9 9
10 #include "base/memory/aligned_memory.h" 10 #include "base/memory/aligned_memory.h"
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43 // Create an AudioBuffer whose channel data is copied from |data|. For 43 // Create an AudioBuffer whose channel data is copied from |data|. For
44 // interleaved data, only the first buffer is used. For planar data, the 44 // interleaved data, only the first buffer is used. For planar data, the
45 // number of buffers must be equal to |channel_count|. |frame_count| is the 45 // number of buffers must be equal to |channel_count|. |frame_count| is the
46 // number of frames in each buffer. |data| must not be null and |frame_count| 46 // number of frames in each buffer. |data| must not be null and |frame_count|
47 // must be >= 0. 47 // must be >= 0.
48 static scoped_refptr<AudioBuffer> CopyFrom(SampleFormat sample_format, 48 static scoped_refptr<AudioBuffer> CopyFrom(SampleFormat sample_format,
49 ChannelLayout channel_layout, 49 ChannelLayout channel_layout,
50 int channel_count, 50 int channel_count,
51 int sample_rate, 51 int sample_rate,
52 int frame_count, 52 int frame_count,
53 const uint8* const* data, 53 const uint8_t* const* data,
54 const base::TimeDelta timestamp); 54 const base::TimeDelta timestamp);
55 55
56 // Create an AudioBuffer with |frame_count| frames. Buffer is allocated, but 56 // Create an AudioBuffer with |frame_count| frames. Buffer is allocated, but
57 // not initialized. Timestamp and duration are set to kNoTimestamp(). 57 // not initialized. Timestamp and duration are set to kNoTimestamp().
58 static scoped_refptr<AudioBuffer> CreateBuffer(SampleFormat sample_format, 58 static scoped_refptr<AudioBuffer> CreateBuffer(SampleFormat sample_format,
59 ChannelLayout channel_layout, 59 ChannelLayout channel_layout,
60 int channel_count, 60 int channel_count,
61 int sample_rate, 61 int sample_rate,
62 int frame_count); 62 int frame_count);
63 63
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79 // first. |dest_frame_offset| is the frame offset in |dest|. The frames are 79 // first. |dest_frame_offset| is the frame offset in |dest|. The frames are
80 // converted from their source format into planar float32 data (which is all 80 // converted from their source format into planar float32 data (which is all
81 // that AudioBus handles). 81 // that AudioBus handles).
82 void ReadFrames(int frames_to_copy, 82 void ReadFrames(int frames_to_copy,
83 int source_frame_offset, 83 int source_frame_offset,
84 int dest_frame_offset, 84 int dest_frame_offset,
85 AudioBus* dest); 85 AudioBus* dest);
86 86
87 // Copy |frames_to_copy| frames into |dest|, |frames_to_copy| is the number of 87 // Copy |frames_to_copy| frames into |dest|, |frames_to_copy| is the number of
88 // frames to copy. The frames are converted from their source format into 88 // frames to copy. The frames are converted from their source format into
89 // interleaved int32. 89 // interleaved int32_t.
90 void ReadFramesInterleavedS32(int frames_to_copy, int32* dest); 90 void ReadFramesInterleavedS32(int frames_to_copy, int32_t* dest);
91 91
92 // Copy |frames_to_copy| frames into |dest|, |frames_to_copy| is the number of 92 // Copy |frames_to_copy| frames into |dest|, |frames_to_copy| is the number of
93 // frames to copy. The frames are converted from their source format into 93 // frames to copy. The frames are converted from their source format into
94 // interleaved int16. 94 // interleaved int16_t.
95 void ReadFramesInterleavedS16(int frames_to_copy, int16* dest); 95 void ReadFramesInterleavedS16(int frames_to_copy, int16_t* dest);
96 96
97 // Trim an AudioBuffer by removing |frames_to_trim| frames from the start. 97 // Trim an AudioBuffer by removing |frames_to_trim| frames from the start.
98 // Timestamp and duration are adjusted to reflect the fewer frames. 98 // Timestamp and duration are adjusted to reflect the fewer frames.
99 // Note that repeated calls to TrimStart() may result in timestamp() and 99 // Note that repeated calls to TrimStart() may result in timestamp() and
100 // duration() being off by a few microseconds due to rounding issues. 100 // duration() being off by a few microseconds due to rounding issues.
101 void TrimStart(int frames_to_trim); 101 void TrimStart(int frames_to_trim);
102 102
103 // Trim an AudioBuffer by removing |frames_to_trim| frames from the end. 103 // Trim an AudioBuffer by removing |frames_to_trim| frames from the end.
104 // Duration is adjusted to reflect the fewer frames. 104 // Duration is adjusted to reflect the fewer frames.
105 void TrimEnd(int frames_to_trim); 105 void TrimEnd(int frames_to_trim);
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122 122
123 base::TimeDelta timestamp() const { return timestamp_; } 123 base::TimeDelta timestamp() const { return timestamp_; }
124 base::TimeDelta duration() const { return duration_; } 124 base::TimeDelta duration() const { return duration_; }
125 void set_timestamp(base::TimeDelta timestamp) { timestamp_ = timestamp; } 125 void set_timestamp(base::TimeDelta timestamp) { timestamp_ = timestamp; }
126 126
127 // If there's no data in this buffer, it represents end of stream. 127 // If there's no data in this buffer, it represents end of stream.
128 bool end_of_stream() const { return end_of_stream_; } 128 bool end_of_stream() const { return end_of_stream_; }
129 129
130 // Access to the raw buffer for ffmpeg to write directly to. Data for planar 130 // Access to the raw buffer for ffmpeg to write directly to. Data for planar
131 // data is grouped by channel. There is only 1 entry for interleaved formats. 131 // data is grouped by channel. There is only 1 entry for interleaved formats.
132 const std::vector<uint8*>& channel_data() const { return channel_data_; } 132 const std::vector<uint8_t*>& channel_data() const { return channel_data_; }
133 133
134 private: 134 private:
135 friend class base::RefCountedThreadSafe<AudioBuffer>; 135 friend class base::RefCountedThreadSafe<AudioBuffer>;
136 136
137 // mojo::TypeConverter added as a friend so that AudioBuffer can be 137 // mojo::TypeConverter added as a friend so that AudioBuffer can be
138 // transferred across a mojo connection. 138 // transferred across a mojo connection.
139 friend struct mojo::TypeConverter<mojo::StructPtr<interfaces::AudioBuffer>, 139 friend struct mojo::TypeConverter<mojo::StructPtr<interfaces::AudioBuffer>,
140 scoped_refptr<AudioBuffer>>; 140 scoped_refptr<AudioBuffer>>;
141 141
142 // Allocates aligned contiguous buffer to hold all channel data (1 block for 142 // Allocates aligned contiguous buffer to hold all channel data (1 block for
143 // interleaved data, |channel_count| blocks for planar data), copies 143 // interleaved data, |channel_count| blocks for planar data), copies
144 // [data,data+data_size) to the allocated buffer(s). If |data| is null, no 144 // [data,data+data_size) to the allocated buffer(s). If |data| is null, no
145 // data is copied. If |create_buffer| is false, no data buffer is created (or 145 // data is copied. If |create_buffer| is false, no data buffer is created (or
146 // copied to). 146 // copied to).
147 AudioBuffer(SampleFormat sample_format, 147 AudioBuffer(SampleFormat sample_format,
148 ChannelLayout channel_layout, 148 ChannelLayout channel_layout,
149 int channel_count, 149 int channel_count,
150 int sample_rate, 150 int sample_rate,
151 int frame_count, 151 int frame_count,
152 bool create_buffer, 152 bool create_buffer,
153 const uint8* const* data, 153 const uint8_t* const* data,
154 const base::TimeDelta timestamp); 154 const base::TimeDelta timestamp);
155 155
156 virtual ~AudioBuffer(); 156 virtual ~AudioBuffer();
157 157
158 const SampleFormat sample_format_; 158 const SampleFormat sample_format_;
159 const ChannelLayout channel_layout_; 159 const ChannelLayout channel_layout_;
160 const int channel_count_; 160 const int channel_count_;
161 const int sample_rate_; 161 const int sample_rate_;
162 int adjusted_frame_count_; 162 int adjusted_frame_count_;
163 int trim_start_; 163 int trim_start_;
164 const bool end_of_stream_; 164 const bool end_of_stream_;
165 base::TimeDelta timestamp_; 165 base::TimeDelta timestamp_;
166 base::TimeDelta duration_; 166 base::TimeDelta duration_;
167 167
168 // Contiguous block of channel data. 168 // Contiguous block of channel data.
169 scoped_ptr<uint8, base::AlignedFreeDeleter> data_; 169 scoped_ptr<uint8_t, base::AlignedFreeDeleter> data_;
170 size_t data_size_; 170 size_t data_size_;
171 171
172 // For planar data, points to each channels data. 172 // For planar data, points to each channels data.
173 std::vector<uint8*> channel_data_; 173 std::vector<uint8_t*> channel_data_;
174 174
175 DISALLOW_IMPLICIT_CONSTRUCTORS(AudioBuffer); 175 DISALLOW_IMPLICIT_CONSTRUCTORS(AudioBuffer);
176 }; 176 };
177 177
178 } // namespace media 178 } // namespace media
179 179
180 #endif // MEDIA_BASE_AUDIO_BUFFER_H_ 180 #endif // MEDIA_BASE_AUDIO_BUFFER_H_
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