The Tor Browser / file comparison
comparison: gfx/skia/trunk/src/utils/mac/SkStream_mac.cpp
gfx/skia/trunk/src/utils/mac/SkStream_mac.cpp
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:236fd120f165 |
|---|---|
| 1 /* | |
| 2 * Copyright 2012 Google Inc. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license that can be | |
| 5 * found in the LICENSE file. | |
| 6 */ | |
| 7 | |
| 8 #include "SkCGUtils.h" | |
| 9 #include "SkStream.h" | |
| 10 | |
| 11 // This is used by CGDataProviderCreateWithData | |
| 12 | |
| 13 static void unref_proc(void* info, const void* addr, size_t size) { | |
| 14 SkASSERT(info); | |
| 15 ((SkRefCnt*)info)->unref(); | |
| 16 } | |
| 17 | |
| 18 // These are used by CGDataProviderSequentialCallbacks | |
| 19 | |
| 20 static size_t get_bytes_proc(void* info, void* buffer, size_t bytes) { | |
| 21 SkASSERT(info); | |
| 22 return ((SkStream*)info)->read(buffer, bytes); | |
| 23 } | |
| 24 | |
| 25 static off_t skip_forward_proc(void* info, off_t bytes) { | |
| 26 return ((SkStream*)info)->skip((size_t) bytes); | |
| 27 } | |
| 28 | |
| 29 static void rewind_proc(void* info) { | |
| 30 SkASSERT(info); | |
| 31 ((SkStream*)info)->rewind(); | |
| 32 } | |
| 33 | |
| 34 static void release_info_proc(void* info) { | |
| 35 SkASSERT(info); | |
| 36 ((SkStream*)info)->unref(); | |
| 37 } | |
| 38 | |
| 39 CGDataProviderRef SkCreateDataProviderFromStream(SkStream* stream) { | |
| 40 stream->ref(); // unref will be called when the provider is deleted | |
| 41 | |
| 42 const void* addr = stream->getMemoryBase(); | |
| 43 if (addr) { | |
| 44 // special-case when the stream is just a block of ram | |
| 45 return CGDataProviderCreateWithData(stream, addr, stream->getLength(), | |
| 46 unref_proc); | |
| 47 } | |
| 48 | |
| 49 CGDataProviderSequentialCallbacks rec; | |
| 50 sk_bzero(&rec, sizeof(rec)); | |
| 51 rec.version = 0; | |
| 52 rec.getBytes = get_bytes_proc; | |
| 53 rec.skipForward = skip_forward_proc; | |
| 54 rec.rewind = rewind_proc; | |
| 55 rec.releaseInfo = release_info_proc; | |
| 56 return CGDataProviderCreateSequential(stream, &rec); | |
| 57 } | |
| 58 | |
| 59 /////////////////////////////////////////////////////////////////////////////// | |
| 60 | |
| 61 #include "SkData.h" | |
| 62 | |
| 63 CGDataProviderRef SkCreateDataProviderFromData(SkData* data) { | |
| 64 data->ref(); | |
| 65 return CGDataProviderCreateWithData(data, data->data(), data->size(), | |
| 66 unref_proc); | |
| 67 } |
