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Side by Side Diff: src/core/SkCodecImageGenerator.cpp

Issue 1487683004: Create an SkCodecImageGenerator (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: SkCodecImageGenerator - no tests Created 5 years ago
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1 /*
2 * Copyright 2015 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 "SkCodec.h"
9 #include "SkImageGenerator.h"
10
11 class SkCodecImageGenerator : SkImageGenerator {
12 public:
13 /*
14 * Takes ownership of codec
15 */
16 static SkImageGenerator* Create(SkCodec* codec);
17
18 protected:
19
20 bool onGetPixels(const SkImageInfo& info, void* pixels, size_t rowBytes, SkP MColor ctable[],
21 int* ctableCount) override;
22
23 private:
24 SkCodecImageGenerator(SkCodec* codec);
25
26 SkAutoTDelete<SkCodec> fCodec; // Owned
scroggo 2015/12/02 20:22:55 nit: I think it's obvious that fCodec is owned, si
msarett 2015/12/02 22:56:01 I think so too. Removing the comment.
27
28 typedef SkImageGenerator INHERITED;
29 };
30
31 SkImageGenerator* SkCodecImageGenerator::Create(SkCodec* codec) {
32 if (nullptr == codec) {
33 return nullptr;
34 }
35
36 return new SkCodecImageGenerator(codec);
37 }
38
39 SkCodecImageGenerator::SkCodecImageGenerator(SkCodec* codec)
40 : INHERITED(codec->getInfo())
41 , fCodec(codec)
42 {}
43
44 bool SkCodecImageGenerator::onGetPixels(const SkImageInfo& info, void* pixels, s ize_t rowBytes,
45 SkPMColor ctable[], int* ctableCount) {
46
47 SkCodec::Result result = fCodec->getPixels(info, pixels, rowBytes, nullptr, ctable,
48 ctableCount);
49 switch (result) {
50 case SkCodec::kSuccess:
51 case SkCodec::kIncompleteInput:
52 return true;
53 default:
54 return false;
55 }
56 }
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