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Side by Side Diff: media/formats/mp4/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 2015 The Chromium Authors. All rights reserved. 1 // Copyright 2015 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_BITSTREAM_CONVERTER_H_ 5 #ifndef MEDIA_FORMATS_MP4_BITSTREAM_CONVERTER_H_
6 #define MEDIA_FORMATS_MP4_BITSTREAM_CONVERTER_H_ 6 #define MEDIA_FORMATS_MP4_BITSTREAM_CONVERTER_H_
7 7
8 #include <vector> 8 #include <vector>
9 9
10 #include "base/basictypes.h"
11 #include "base/memory/ref_counted.h" 10 #include "base/memory/ref_counted.h"
12 11
13 namespace media { 12 namespace media {
14 13
15 struct SubsampleEntry; 14 struct SubsampleEntry;
16 15
17 namespace mp4 { 16 namespace mp4 {
18 17
19 // BitstreamConverter provides a unified interface for performing some common 18 // BitstreamConverter provides a unified interface for performing some common
20 // bitstream conversions (e.g. H.264 MP4 bitstream to Annex B, and elementary 19 // bitstream conversions (e.g. H.264 MP4 bitstream to Annex B, and elementary
21 // AAC stream to ADTS). 20 // AAC stream to ADTS).
22 class BitstreamConverter 21 class BitstreamConverter
23 : public base::RefCountedThreadSafe<BitstreamConverter> { 22 : public base::RefCountedThreadSafe<BitstreamConverter> {
24 public: 23 public:
25 // Converts a single frame/buffer |frame_buf| into the output format. 24 // Converts a single frame/buffer |frame_buf| into the output format.
26 // Returns true iff the conversion was successful. 25 // Returns true iff the conversion was successful.
27 // |frame_buf| is an input/output parameter, it contains input frame data and 26 // |frame_buf| is an input/output parameter, it contains input frame data and
28 // contains converted output data if conversion was successful. 27 // contains converted output data if conversion was successful.
29 // |is_keyframe| indicates whether it's a key frame or not. 28 // |is_keyframe| indicates whether it's a key frame or not.
30 // |subsamples| is an input/output parameter that contains CENC subsample 29 // |subsamples| is an input/output parameter that contains CENC subsample
31 // information. The conversion code should |subsamples| to determine if parts 30 // information. The conversion code should |subsamples| to determine if parts
32 // of input frame are encrypted and should update |subsamples| if necessary, 31 // of input frame are encrypted and should update |subsamples| if necessary,
33 // to make sure it correctly describes the converted output frame. See 32 // to make sure it correctly describes the converted output frame. See
34 // SubsampleEntry definition in media/base/decrypt_config.h for more info. 33 // SubsampleEntry definition in media/base/decrypt_config.h for more info.
35 virtual bool ConvertFrame(std::vector<uint8>* frame_buf, 34 virtual bool ConvertFrame(std::vector<uint8_t>* frame_buf,
36 bool is_keyframe, 35 bool is_keyframe,
37 std::vector<SubsampleEntry>* subsamples) const = 0; 36 std::vector<SubsampleEntry>* subsamples) const = 0;
37
38 protected: 38 protected:
39 friend class base::RefCountedThreadSafe<BitstreamConverter>; 39 friend class base::RefCountedThreadSafe<BitstreamConverter>;
40 virtual ~BitstreamConverter(); 40 virtual ~BitstreamConverter();
41 }; 41 };
42 42
43 } // namespace mp4 43 } // namespace mp4
44 } // namespace media 44 } // namespace media
45 45
46 #endif // MEDIA_FORMATS_MP4_AVC_H_ 46 #endif // MEDIA_FORMATS_MP4_AVC_H_
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