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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_BASE_DECODER_BUFFER_H_ | 5 #ifndef MEDIA_BASE_DECODER_BUFFER_H_ |
6 #define MEDIA_BASE_DECODER_BUFFER_H_ | 6 #define MEDIA_BASE_DECODER_BUFFER_H_ |
7 | 7 |
8 #include <string> | |
9 | |
8 #include "base/memory/aligned_memory.h" | 10 #include "base/memory/aligned_memory.h" |
9 #include "base/memory/ref_counted.h" | 11 #include "base/memory/ref_counted.h" |
10 #include "base/memory/scoped_ptr.h" | 12 #include "base/memory/scoped_ptr.h" |
11 #include "base/time.h" | 13 #include "base/time.h" |
12 #include "build/build_config.h" | 14 #include "build/build_config.h" |
13 #include "media/base/media_export.h" | 15 #include "media/base/media_export.h" |
14 | 16 |
15 namespace media { | 17 namespace media { |
16 | 18 |
17 class DecryptConfig; | 19 class DecryptConfig; |
(...skipping 18 matching lines...) Expand all Loading... | |
36 }; | 38 }; |
37 | 39 |
38 // Allocates buffer with |size| >= 0. Buffer will be padded and aligned | 40 // Allocates buffer with |size| >= 0. Buffer will be padded and aligned |
39 // as necessary. | 41 // as necessary. |
40 explicit DecoderBuffer(int size); | 42 explicit DecoderBuffer(int size); |
41 | 43 |
42 // Create a DecoderBuffer whose |data_| is copied from |data|. Buffer will be | 44 // Create a DecoderBuffer whose |data_| is copied from |data|. Buffer will be |
43 // padded and aligned as necessary. |data| must not be NULL and |size| >= 0. | 45 // padded and aligned as necessary. |data| must not be NULL and |size| >= 0. |
44 static scoped_refptr<DecoderBuffer> CopyFrom(const uint8* data, int size); | 46 static scoped_refptr<DecoderBuffer> CopyFrom(const uint8* data, int size); |
45 | 47 |
46 // Create a DecoderBuffer indicating we've reached end of stream. GetData() | 48 // Create a DecoderBuffer indicating we've reached end of stream. |
47 // and GetWritableData() will return NULL and GetDataSize() will return 0. | 49 // |
50 // Calling any method other than IsEndOfStream() on the resulting buffer | |
51 // is disallowed. | |
xhwang
2013/01/17 23:55:13
This means the caller/user of a DecoderBuffer shou
scherkus (not reviewing)
2013/01/18 00:06:36
Done + DataBuffer.
| |
48 static scoped_refptr<DecoderBuffer> CreateEOSBuffer(); | 52 static scoped_refptr<DecoderBuffer> CreateEOSBuffer(); |
49 | 53 |
50 base::TimeDelta GetTimestamp() const; | 54 base::TimeDelta GetTimestamp() const; |
51 void SetTimestamp(const base::TimeDelta& timestamp); | 55 void SetTimestamp(const base::TimeDelta& timestamp); |
52 | 56 |
53 base::TimeDelta GetDuration() const; | 57 base::TimeDelta GetDuration() const; |
54 void SetDuration(const base::TimeDelta& duration); | 58 void SetDuration(const base::TimeDelta& duration); |
55 | 59 |
56 const uint8* GetData() const; | 60 const uint8* GetData() const; |
57 uint8* GetWritableData() const; | 61 uint8* GetWritableData() const; |
58 | 62 |
59 int GetDataSize() const; | 63 int GetDataSize() const; |
60 | 64 |
61 const DecryptConfig* GetDecryptConfig() const; | 65 const DecryptConfig* GetDecryptConfig() const; |
62 void SetDecryptConfig(scoped_ptr<DecryptConfig> decrypt_config); | 66 void SetDecryptConfig(scoped_ptr<DecryptConfig> decrypt_config); |
63 | 67 |
64 // If there's no data in this buffer, it represents end of stream. | 68 // If there's no data in this buffer, it represents end of stream. |
65 bool IsEndOfStream() const; | 69 bool IsEndOfStream() const; |
66 | 70 |
71 // Returns a human-readable string describing |*this|. | |
72 std::string AsHumanReadableString(); | |
73 | |
67 protected: | 74 protected: |
68 friend class base::RefCountedThreadSafe<DecoderBuffer>; | 75 friend class base::RefCountedThreadSafe<DecoderBuffer>; |
69 | 76 |
70 // Allocates a buffer of size |size| >= 0 and copies |data| into it. Buffer | 77 // Allocates a buffer of size |size| >= 0 and copies |data| into it. Buffer |
71 // will be padded and aligned as necessary. If |data| is NULL then |data_| is | 78 // will be padded and aligned as necessary. If |data| is NULL then |data_| is |
72 // set to NULL and |buffer_size_| to 0. | 79 // set to NULL and |buffer_size_| to 0. |
73 DecoderBuffer(const uint8* data, int size); | 80 DecoderBuffer(const uint8* data, int size); |
74 virtual ~DecoderBuffer(); | 81 virtual ~DecoderBuffer(); |
75 | 82 |
76 private: | 83 private: |
77 base::TimeDelta timestamp_; | 84 base::TimeDelta timestamp_; |
78 base::TimeDelta duration_; | 85 base::TimeDelta duration_; |
79 | 86 |
80 int size_; | 87 int size_; |
81 scoped_ptr<uint8, base::ScopedPtrAlignedFree> data_; | 88 scoped_ptr<uint8, base::ScopedPtrAlignedFree> data_; |
82 scoped_ptr<DecryptConfig> decrypt_config_; | 89 scoped_ptr<DecryptConfig> decrypt_config_; |
83 | 90 |
84 // Constructor helper method for memory allocations. | 91 // Constructor helper method for memory allocations. |
85 void Initialize(); | 92 void Initialize(); |
86 | 93 |
87 DISALLOW_COPY_AND_ASSIGN(DecoderBuffer); | 94 DISALLOW_COPY_AND_ASSIGN(DecoderBuffer); |
88 }; | 95 }; |
89 | 96 |
90 } // namespace media | 97 } // namespace media |
91 | 98 |
92 #endif // MEDIA_BASE_DECODER_BUFFER_H_ | 99 #endif // MEDIA_BASE_DECODER_BUFFER_H_ |
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