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Side by Side Diff: media/filters/h264_to_annex_b_bitstream_converter.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 (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_FILTERS_H264_TO_ANNEX_B_BITSTREAM_CONVERTER_H_ 5 #ifndef MEDIA_FILTERS_H264_TO_ANNEX_B_BITSTREAM_CONVERTER_H_
6 #define MEDIA_FILTERS_H264_TO_ANNEX_B_BITSTREAM_CONVERTER_H_ 6 #define MEDIA_FILTERS_H264_TO_ANNEX_B_BITSTREAM_CONVERTER_H_
7 7
8 #include <stdint.h>
9
8 #include <vector> 10 #include <vector>
9 11
10 #include "base/basictypes.h" 12 #include "base/macros.h"
11 #include "media/base/media_export.h" 13 #include "media/base/media_export.h"
12 14
13 namespace media { 15 namespace media {
14 16
15 namespace mp4 { 17 namespace mp4 {
16 struct AVCDecoderConfigurationRecord; 18 struct AVCDecoderConfigurationRecord;
17 } 19 }
18 20
19 // H264ToAnnexBBitstreamConverter is a class to convert H.264 bitstream from 21 // H264ToAnnexBBitstreamConverter is a class to convert H.264 bitstream from
20 // MP4 format (as specified in ISO/IEC 14496-15) into H.264 bytestream 22 // MP4 format (as specified in ISO/IEC 14496-15) into H.264 bytestream
(...skipping 12 matching lines...) Expand all
33 // Pointer to buffer containing AVCDecoderConfigurationRecord. 35 // Pointer to buffer containing AVCDecoderConfigurationRecord.
34 // configuration_record_size 36 // configuration_record_size
35 // Size of the buffer in bytes. 37 // Size of the buffer in bytes.
36 // avc_config 38 // avc_config
37 // Pointer to place the parsed AVCDecoderConfigurationRecord data into. 39 // Pointer to place the parsed AVCDecoderConfigurationRecord data into.
38 // 40 //
39 // Returns 41 // Returns
40 // Returns true if |configuration_record| was successfully parsed. False 42 // Returns true if |configuration_record| was successfully parsed. False
41 // is returned if a parsing error occurred. 43 // is returned if a parsing error occurred.
42 // |avc_config| only contains valid data when true is returned. 44 // |avc_config| only contains valid data when true is returned.
43 bool ParseConfiguration( 45 bool ParseConfiguration(const uint8_t* configuration_record,
44 const uint8* configuration_record, 46 int configuration_record_size,
45 int configuration_record_size, 47 mp4::AVCDecoderConfigurationRecord* avc_config);
46 mp4::AVCDecoderConfigurationRecord* avc_config);
47 48
48 // Returns the buffer size needed to store the parameter sets in |avc_config| 49 // Returns the buffer size needed to store the parameter sets in |avc_config|
49 // in Annex B form. 50 // in Annex B form.
50 uint32 GetConfigSize( 51 uint32_t GetConfigSize(
51 const mp4::AVCDecoderConfigurationRecord& avc_config) const; 52 const mp4::AVCDecoderConfigurationRecord& avc_config) const;
52 53
53 // Calculates needed buffer size for the bitstream converted into bytestream. 54 // Calculates needed buffer size for the bitstream converted into bytestream.
54 // Lightweight implementation that does not do the actual conversion. 55 // Lightweight implementation that does not do the actual conversion.
55 // 56 //
56 // Parameters 57 // Parameters
57 // input 58 // input
58 // Pointer to buffer containing NAL units in MP4 format. 59 // Pointer to buffer containing NAL units in MP4 format.
59 // input_size 60 // input_size
60 // Size of the buffer in bytes. 61 // Size of the buffer in bytes.
61 // avc_config 62 // avc_config
62 // The AVCDecoderConfigurationRecord that contains the parameter sets that 63 // The AVCDecoderConfigurationRecord that contains the parameter sets that
63 // will be inserted into the output. NULL if no parameter sets need to be 64 // will be inserted into the output. NULL if no parameter sets need to be
64 // inserted. 65 // inserted.
65 // 66 //
66 // Returns 67 // Returns
67 // Required buffer size for the output NAL unit buffer when converted 68 // Required buffer size for the output NAL unit buffer when converted
68 // to bytestream format, or 0 if could not determine the size of 69 // to bytestream format, or 0 if could not determine the size of
69 // the output buffer from the data in |input| and |avc_config|. 70 // the output buffer from the data in |input| and |avc_config|.
70 uint32 CalculateNeededOutputBufferSize( 71 uint32_t CalculateNeededOutputBufferSize(
71 const uint8* input, 72 const uint8_t* input,
72 uint32 input_size, 73 uint32_t input_size,
73 const mp4::AVCDecoderConfigurationRecord* avc_config) const; 74 const mp4::AVCDecoderConfigurationRecord* avc_config) const;
74 75
75 // ConvertAVCDecoderConfigToByteStream converts the 76 // ConvertAVCDecoderConfigToByteStream converts the
76 // AVCDecoderConfigurationRecord from the MP4 headers to bytestream format. 77 // AVCDecoderConfigurationRecord from the MP4 headers to bytestream format.
77 // Client is responsible for making sure the output buffer is large enough 78 // Client is responsible for making sure the output buffer is large enough
78 // to hold the output data. Client can precalculate the needed output buffer 79 // to hold the output data. Client can precalculate the needed output buffer
79 // size by using GetConfigSize(). 80 // size by using GetConfigSize().
80 // 81 //
81 // Parameters 82 // Parameters
82 // avc_config 83 // avc_config
83 // The AVCDecoderConfigurationRecord that contains the parameter sets that 84 // The AVCDecoderConfigurationRecord that contains the parameter sets that
84 // will be written to |output|. 85 // will be written to |output|.
85 // output 86 // output
86 // Pointer to buffer where the output should be written to. 87 // Pointer to buffer where the output should be written to.
87 // output_size (i/o) 88 // output_size (i/o)
88 // Pointer to the size of the output buffer. Will contain the number of 89 // Pointer to the size of the output buffer. Will contain the number of
89 // bytes written to output after successful call. 90 // bytes written to output after successful call.
90 // 91 //
91 // Returns 92 // Returns
92 // true if successful conversion| 93 // true if successful conversion|
93 // false if conversion not successful (|output_size| will hold the amount 94 // false if conversion not successful (|output_size| will hold the amount
94 // of converted data) 95 // of converted data)
95 bool ConvertAVCDecoderConfigToByteStream( 96 bool ConvertAVCDecoderConfigToByteStream(
96 const mp4::AVCDecoderConfigurationRecord& avc_config, 97 const mp4::AVCDecoderConfigurationRecord& avc_config,
97 uint8* output, 98 uint8_t* output,
98 uint32* output_size); 99 uint32_t* output_size);
99 100
100 // ConvertNalUnitStreamToByteStream converts the NAL unit from MP4 format 101 // ConvertNalUnitStreamToByteStream converts the NAL unit from MP4 format
101 // to bytestream format. Client is responsible for making sure the output 102 // to bytestream format. Client is responsible for making sure the output
102 // buffer is large enough to hold the output data. Client can precalculate the 103 // buffer is large enough to hold the output data. Client can precalculate the
103 // needed output buffer size by using CalculateNeededOutputBufferSize. 104 // needed output buffer size by using CalculateNeededOutputBufferSize.
104 // 105 //
105 // Parameters 106 // Parameters
106 // input 107 // input
107 // Pointer to buffer containing NAL units in MP4 format. 108 // Pointer to buffer containing NAL units in MP4 format.
108 // input_size 109 // input_size
109 // Size of the buffer in bytes. 110 // Size of the buffer in bytes.
110 // avc_config 111 // avc_config
111 // The AVCDecoderConfigurationRecord that contains the parameter sets to 112 // The AVCDecoderConfigurationRecord that contains the parameter sets to
112 // insert into the output. NULL if no parameter sets need to be inserted. 113 // insert into the output. NULL if no parameter sets need to be inserted.
113 // output 114 // output
114 // Pointer to buffer where the output should be written to. 115 // Pointer to buffer where the output should be written to.
115 // output_size (i/o) 116 // output_size (i/o)
116 // Pointer to the size of the output buffer. Will contain the number of 117 // Pointer to the size of the output buffer. Will contain the number of
117 // bytes written to output after successful call. 118 // bytes written to output after successful call.
118 // 119 //
119 // Returns 120 // Returns
120 // true if successful conversion 121 // true if successful conversion
121 // false if conversion not successful (output_size will hold the amount 122 // false if conversion not successful (output_size will hold the amount
122 // of converted data) 123 // of converted data)
123 bool ConvertNalUnitStreamToByteStream( 124 bool ConvertNalUnitStreamToByteStream(
124 const uint8* input, 125 const uint8_t* input,
125 uint32 input_size, 126 uint32_t input_size,
126 const mp4::AVCDecoderConfigurationRecord* avc_config, 127 const mp4::AVCDecoderConfigurationRecord* avc_config,
127 uint8* output, 128 uint8_t* output,
128 uint32* output_size); 129 uint32_t* output_size);
129 130
130 private: 131 private:
131 // Writes Annex B start code and |param_set| to |*out|. 132 // Writes Annex B start code and |param_set| to |*out|.
132 // |*out| - Is the memory location to write the parameter set. 133 // |*out| - Is the memory location to write the parameter set.
133 // |*out_size| - Number of bytes available for the parameter set. 134 // |*out_size| - Number of bytes available for the parameter set.
134 // Returns true if the start code and param set were successfully 135 // Returns true if the start code and param set were successfully
135 // written. On a successful write, |*out| is updated to point to the first 136 // written. On a successful write, |*out| is updated to point to the first
136 // byte after the data that was written. |*out_size| is updated to reflect 137 // byte after the data that was written. |*out_size| is updated to reflect
137 // the new number of bytes left in |*out|. 138 // the new number of bytes left in |*out|.
138 bool WriteParamSet(const std::vector<uint8>& param_set, 139 bool WriteParamSet(const std::vector<uint8_t>& param_set,
139 uint8** out, 140 uint8_t** out,
140 uint32* out_size) const; 141 uint32_t* out_size) const;
141 142
142 // Flag for indicating whether global parameter sets have been processed. 143 // Flag for indicating whether global parameter sets have been processed.
143 bool configuration_processed_; 144 bool configuration_processed_;
144 // Flag for indicating whether next NAL unit starts new access unit. 145 // Flag for indicating whether next NAL unit starts new access unit.
145 bool first_nal_unit_in_access_unit_; 146 bool first_nal_unit_in_access_unit_;
146 // Variable to hold interleaving field's length in bytes. 147 // Variable to hold interleaving field's length in bytes.
147 uint8 nal_unit_length_field_width_; 148 uint8_t nal_unit_length_field_width_;
148 149
149 DISALLOW_COPY_AND_ASSIGN(H264ToAnnexBBitstreamConverter); 150 DISALLOW_COPY_AND_ASSIGN(H264ToAnnexBBitstreamConverter);
150 }; 151 };
151 152
152 } // namespace media 153 } // namespace media
153 154
154 #endif // MEDIA_FILTERS_H264_TO_ANNEX_B_BITSTREAM_CONVERTER_H_ 155 #endif // MEDIA_FILTERS_H264_TO_ANNEX_B_BITSTREAM_CONVERTER_H_
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