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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #ifndef SkStreamPriv_DEFINED | 8 #ifndef SkStreamPriv_DEFINED |
9 #define SkStreamPriv_DEFINED | 9 #define SkStreamPriv_DEFINED |
10 | 10 |
11 class SkAutoMalloc; | 11 class SkAutoMalloc; |
12 class SkStream; | 12 class SkStream; |
| 13 class SkStreamRewindable; |
13 class SkData; | 14 class SkData; |
14 | 15 |
15 /** | 16 /** |
16 * Copy the provided stream to memory allocated by storage. | 17 * Copy the provided stream to memory allocated by storage. |
17 * Used by SkImageDecoder_libbmp and SkImageDecoder_libico. | 18 * Used by SkImageDecoder_libbmp and SkImageDecoder_libico. |
18 * @param storage Allocator to hold the memory. Will be reset to be large | 19 * @param storage Allocator to hold the memory. Will be reset to be large |
19 * enough to hold the entire stream. Upon successful return, | 20 * enough to hold the entire stream. Upon successful return, |
20 * storage->get() will point to data holding the SkStream's entire | 21 * storage->get() will point to data holding the SkStream's entire |
21 * contents. | 22 * contents. |
22 * @param stream SkStream to be copied into storage. | 23 * @param stream SkStream to be copied into storage. |
23 * @return size_t Total number of bytes in the SkStream, which is also the | 24 * @return size_t Total number of bytes in the SkStream, which is also the |
24 * number of bytes pointed to by storage->get(). Returns 0 on failure. | 25 * number of bytes pointed to by storage->get(). Returns 0 on failure. |
25 */ | 26 */ |
26 size_t SkCopyStreamToStorage(SkAutoMalloc* storage, SkStream* stream); | 27 size_t SkCopyStreamToStorage(SkAutoMalloc* storage, SkStream* stream); |
27 | 28 |
28 /** | 29 /** |
29 * Copy the provided stream to an SkData variable. | 30 * Copy the provided stream to an SkData variable. |
30 * @param stream SkStream to be copied into data. | 31 * @param stream SkStream to be copied into data. |
31 * @return SkData* The resulting SkData after the copy. This data | 32 * @return SkData* The resulting SkData after the copy. This data |
32 * will have a ref count of one upon return and belongs to the | 33 * will have a ref count of one upon return and belongs to the |
33 * caller. Returns NULL on failure. | 34 * caller. Returns NULL on failure. |
34 */ | 35 */ |
35 SkData *SkCopyStreamToData(SkStream* stream); | 36 SkData *SkCopyStreamToData(SkStream* stream); |
36 | 37 |
| 38 /** |
| 39 * Attempt to convert this stream to a StreamRewindable in the |
| 40 * cheapest possible manner (calling duplicate() if possible, and |
| 41 * otherwise allocating memory for a copy). The position of the |
| 42 * input stream is left in an indeterminate state. |
| 43 */ |
| 44 SkStreamRewindable* SkStreamRewindableFromSkStream(SkStream* stream); |
| 45 |
37 #endif // SkStreamPriv_DEFINED | 46 #endif // SkStreamPriv_DEFINED |
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