gfx/skia/trunk/src/utils/mac/SkStream_mac.cpp@b8a032363ba2 (annotated)
gfx/skia/trunk/src/utils/mac/SkStream_mac.cpp
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* |
| michael@0 | 2 | * Copyright 2012 Google Inc. |
| michael@0 | 3 | * |
| michael@0 | 4 | * Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 5 | * found in the LICENSE file. |
| michael@0 | 6 | */ |
| michael@0 | 7 | |
| michael@0 | 8 | #include "SkCGUtils.h" |
| michael@0 | 9 | #include "SkStream.h" |
| michael@0 | 10 | |
| michael@0 | 11 | // This is used by CGDataProviderCreateWithData |
| michael@0 | 12 | |
| michael@0 | 13 | static void unref_proc(void* info, const void* addr, size_t size) { |
| michael@0 | 14 | SkASSERT(info); |
| michael@0 | 15 | ((SkRefCnt*)info)->unref(); |
| michael@0 | 16 | } |
| michael@0 | 17 | |
| michael@0 | 18 | // These are used by CGDataProviderSequentialCallbacks |
| michael@0 | 19 | |
| michael@0 | 20 | static size_t get_bytes_proc(void* info, void* buffer, size_t bytes) { |
| michael@0 | 21 | SkASSERT(info); |
| michael@0 | 22 | return ((SkStream*)info)->read(buffer, bytes); |
| michael@0 | 23 | } |
| michael@0 | 24 | |
| michael@0 | 25 | static off_t skip_forward_proc(void* info, off_t bytes) { |
| michael@0 | 26 | return ((SkStream*)info)->skip((size_t) bytes); |
| michael@0 | 27 | } |
| michael@0 | 28 | |
| michael@0 | 29 | static void rewind_proc(void* info) { |
| michael@0 | 30 | SkASSERT(info); |
| michael@0 | 31 | ((SkStream*)info)->rewind(); |
| michael@0 | 32 | } |
| michael@0 | 33 | |
| michael@0 | 34 | static void release_info_proc(void* info) { |
| michael@0 | 35 | SkASSERT(info); |
| michael@0 | 36 | ((SkStream*)info)->unref(); |
| michael@0 | 37 | } |
| michael@0 | 38 | |
| michael@0 | 39 | CGDataProviderRef SkCreateDataProviderFromStream(SkStream* stream) { |
| michael@0 | 40 | stream->ref(); // unref will be called when the provider is deleted |
| michael@0 | 41 | |
| michael@0 | 42 | const void* addr = stream->getMemoryBase(); |
| michael@0 | 43 | if (addr) { |
| michael@0 | 44 | // special-case when the stream is just a block of ram |
| michael@0 | 45 | return CGDataProviderCreateWithData(stream, addr, stream->getLength(), |
| michael@0 | 46 | unref_proc); |
| michael@0 | 47 | } |
| michael@0 | 48 | |
| michael@0 | 49 | CGDataProviderSequentialCallbacks rec; |
| michael@0 | 50 | sk_bzero(&rec, sizeof(rec)); |
| michael@0 | 51 | rec.version = 0; |
| michael@0 | 52 | rec.getBytes = get_bytes_proc; |
| michael@0 | 53 | rec.skipForward = skip_forward_proc; |
| michael@0 | 54 | rec.rewind = rewind_proc; |
| michael@0 | 55 | rec.releaseInfo = release_info_proc; |
| michael@0 | 56 | return CGDataProviderCreateSequential(stream, &rec); |
| michael@0 | 57 | } |
| michael@0 | 58 | |
| michael@0 | 59 | /////////////////////////////////////////////////////////////////////////////// |
| michael@0 | 60 | |
| michael@0 | 61 | #include "SkData.h" |
| michael@0 | 62 | |
| michael@0 | 63 | CGDataProviderRef SkCreateDataProviderFromData(SkData* data) { |
| michael@0 | 64 | data->ref(); |
| michael@0 | 65 | return CGDataProviderCreateWithData(data, data->data(), data->size(), |
| michael@0 | 66 | unref_proc); |
| michael@0 | 67 | } |
