1 /*
2 * Copyright 2016 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 #ifndef CodecPriv_DEFINED
8 #define CodecPriv_DEFINED
9
10 #include "SkBitmap.h"
11 #include "SkCodec.h"
12 #include "SkData.h"
13
decode_memory(const void * mem,size_t size,SkBitmap * bm)14 inline bool decode_memory(const void* mem, size_t size, SkBitmap* bm) {
15 std::unique_ptr<SkCodec> codec(SkCodec::NewFromData(SkData::MakeWithoutCopy(mem, size)));
16 if (!codec) {
17 return false;
18 }
19
20 // Construct a color table for the decode if necessary
21 sk_sp<SkColorTable> colorTable(nullptr);
22 SkPMColor* colorPtr = nullptr;
23 int* colorCountPtr = nullptr;
24 int maxColors = 256;
25 if (kIndex_8_SkColorType == codec->getInfo().colorType()) {
26 SkPMColor colors[256];
27 colorTable.reset(new SkColorTable(colors, maxColors));
28 colorPtr = const_cast<SkPMColor*>(colorTable->readColors());
29 colorCountPtr = &maxColors;
30 }
31
32 bm->allocPixels(codec->getInfo(), nullptr, colorTable.get());
33 const SkCodec::Result result = codec->getPixels(codec->getInfo(), bm->getPixels(),
34 bm->rowBytes(), nullptr, colorPtr, colorCountPtr);
35 return result == SkCodec::kSuccess || result == SkCodec::kIncompleteInput;
36 }
37 #endif // CodecPriv_DEFINED
38