Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(275)

Side by Side Diff: media/formats/mp4/aac.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
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View unified diff | Download patch
OLDNEW
1 // Copyright 2014 The Chromium Authors. All rights reserved. 1 // Copyright 2014 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_FORMATS_MP4_AAC_H_ 5 #ifndef MEDIA_FORMATS_MP4_AAC_H_
6 #define MEDIA_FORMATS_MP4_AAC_H_ 6 #define MEDIA_FORMATS_MP4_AAC_H_
7 7
8 #include <vector> 8 #include <vector>
9 9
10 #include "base/basictypes.h"
11 #include "media/base/channel_layout.h" 10 #include "media/base/channel_layout.h"
12 #include "media/base/media_export.h" 11 #include "media/base/media_export.h"
13 #include "media/base/media_log.h" 12 #include "media/base/media_log.h"
14 13
15 namespace media { 14 namespace media {
16 15
17 class BitReader; 16 class BitReader;
18 17
19 namespace mp4 { 18 namespace mp4 {
20 19
21 // This class parses the AAC information from decoder specific information 20 // This class parses the AAC information from decoder specific information
22 // embedded in the esds box in an ISO BMFF file. 21 // embedded in the esds box in an ISO BMFF file.
23 // Please refer to ISO 14496 Part 3 Table 1.13 - Syntax of AudioSpecificConfig 22 // Please refer to ISO 14496 Part 3 Table 1.13 - Syntax of AudioSpecificConfig
24 // for more details. 23 // for more details.
25 class MEDIA_EXPORT AAC { 24 class MEDIA_EXPORT AAC {
26 public: 25 public:
27 AAC(); 26 AAC();
28 ~AAC(); 27 ~AAC();
29 28
30 // Parse the AAC config from the raw binary data embedded in esds box. 29 // Parse the AAC config from the raw binary data embedded in esds box.
31 // The function will parse the data and get the ElementaryStreamDescriptor, 30 // The function will parse the data and get the ElementaryStreamDescriptor,
32 // then it will parse the ElementaryStreamDescriptor to get audio stream 31 // then it will parse the ElementaryStreamDescriptor to get audio stream
33 // configurations. 32 // configurations.
34 bool Parse(const std::vector<uint8>& data, 33 bool Parse(const std::vector<uint8_t>& data,
35 const scoped_refptr<MediaLog>& media_log); 34 const scoped_refptr<MediaLog>& media_log);
36 35
37 // Gets the output sample rate for the AAC stream. 36 // Gets the output sample rate for the AAC stream.
38 // |sbr_in_mimetype| should be set to true if the SBR mode is 37 // |sbr_in_mimetype| should be set to true if the SBR mode is
39 // signalled in the mimetype. (ie mp4a.40.5 in the codecs parameter). 38 // signalled in the mimetype. (ie mp4a.40.5 in the codecs parameter).
40 // Returns the samples_per_second value that should used in an 39 // Returns the samples_per_second value that should used in an
41 // AudioDecoderConfig. 40 // AudioDecoderConfig.
42 int GetOutputSamplesPerSecond(bool sbr_in_mimetype) const; 41 int GetOutputSamplesPerSecond(bool sbr_in_mimetype) const;
43 42
44 // Gets the channel layout for the AAC stream. 43 // Gets the channel layout for the AAC stream.
45 // |sbr_in_mimetype| should be set to true if the SBR mode is 44 // |sbr_in_mimetype| should be set to true if the SBR mode is
46 // signalled in the mimetype. (ie mp4a.40.5 in the codecs parameter). 45 // signalled in the mimetype. (ie mp4a.40.5 in the codecs parameter).
47 // Returns the channel_layout value that should used in an 46 // Returns the channel_layout value that should used in an
48 // AudioDecoderConfig. 47 // AudioDecoderConfig.
49 ChannelLayout GetChannelLayout(bool sbr_in_mimetype) const; 48 ChannelLayout GetChannelLayout(bool sbr_in_mimetype) const;
50 49
51 // This function converts a raw AAC frame into an AAC frame with an ADTS 50 // This function converts a raw AAC frame into an AAC frame with an ADTS
52 // header. On success, the function returns true and stores the converted data 51 // header. On success, the function returns true and stores the converted data
53 // in the buffer. The function returns false on failure and leaves the buffer 52 // in the buffer. The function returns false on failure and leaves the buffer
54 // unchanged. 53 // unchanged.
55 bool ConvertEsdsToADTS(std::vector<uint8>* buffer) const; 54 bool ConvertEsdsToADTS(std::vector<uint8_t>* buffer) const;
56 55
57 #if defined(OS_ANDROID) 56 #if defined(OS_ANDROID)
58 // Returns the codec specific data needed by android MediaCodec. 57 // Returns the codec specific data needed by android MediaCodec.
59 std::vector<uint8> codec_specific_data() const { 58 std::vector<uint8_t> codec_specific_data() const {
60 return codec_specific_data_; 59 return codec_specific_data_;
61 } 60 }
62 #endif 61 #endif
63 62
64 private: 63 private:
65 bool SkipDecoderGASpecificConfig(BitReader* bit_reader) const; 64 bool SkipDecoderGASpecificConfig(BitReader* bit_reader) const;
66 bool SkipErrorSpecificConfig() const; 65 bool SkipErrorSpecificConfig() const;
67 bool SkipGASpecificConfig(BitReader* bit_reader) const; 66 bool SkipGASpecificConfig(BitReader* bit_reader) const;
68 67
69 // The following variables store the AAC specific configuration information 68 // The following variables store the AAC specific configuration information
70 // that are used to generate the ADTS header. 69 // that are used to generate the ADTS header.
71 uint8 profile_; 70 uint8_t profile_;
72 uint8 frequency_index_; 71 uint8_t frequency_index_;
73 uint8 channel_config_; 72 uint8_t channel_config_;
74 73
75 #if defined(OS_ANDROID) 74 #if defined(OS_ANDROID)
76 // The codec specific data needed by the android MediaCodec. 75 // The codec specific data needed by the android MediaCodec.
77 std::vector<uint8> codec_specific_data_; 76 std::vector<uint8_t> codec_specific_data_;
78 #endif 77 #endif
79 78
80 // The following variables store audio configuration information that 79 // The following variables store audio configuration information that
81 // can be used by Chromium. They are based on the AAC specific 80 // can be used by Chromium. They are based on the AAC specific
82 // configuration but can be overridden by extensions in elementary 81 // configuration but can be overridden by extensions in elementary
83 // stream descriptor. 82 // stream descriptor.
84 int frequency_; 83 int frequency_;
85 int extension_frequency_; 84 int extension_frequency_;
86 ChannelLayout channel_layout_; 85 ChannelLayout channel_layout_;
87 }; 86 };
88 87
89 } // namespace mp4 88 } // namespace mp4
90 89
91 } // namespace media 90 } // namespace media
92 91
93 #endif // MEDIA_FORMATS_MP4_AAC_H_ 92 #endif // MEDIA_FORMATS_MP4_AAC_H_
OLDNEW

Powered by Google App Engine
This is Rietveld 408576698