1 /*
2 * Copyright 2017 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 #ifndef SkStubHeifDecoderAPI_DEFINED
9 #define SkStubHeifDecoderAPI_DEFINED
10
11 // This stub implementation of HeifDecoderAPI.h lets us compile SkHeifCodec.cpp
12 // even when libheif is not available. It, of course, does nothing and fails to decode.
13
14 #include <memory>
15 #include <stddef.h>
16 #include <stdint.h>
17
18 enum HeifColorFormat {
19 kHeifColorFormat_RGB565,
20 kHeifColorFormat_RGBA_8888,
21 kHeifColorFormat_BGRA_8888,
22 kHeifColorFormat_RGBA_1010102,
23 };
24
25 struct HeifStream {
~HeifStreamHeifStream26 virtual ~HeifStream() {}
27
28 virtual size_t read(void*, size_t) = 0;
29 virtual bool rewind() = 0;
30 virtual bool seek(size_t) = 0;
31 virtual bool hasLength() const = 0;
32 virtual size_t getLength() const = 0;
33 };
34
35 struct HeifFrameInfo {
36 uint32_t mWidth;
37 uint32_t mHeight;
38 int32_t mRotationAngle; // Rotation angle, clockwise, should be multiple of 90
39 uint32_t mBytesPerPixel; // Number of bytes for one pixel
40 int64_t mDurationUs; // Duration of the frame in us
41 std::vector<uint8_t> mIccData; // ICC data array
42 };
43
44 struct HeifDecoder {
initHeifDecoder45 bool init(HeifStream* stream, HeifFrameInfo*) {
46 delete stream;
47 return false;
48 }
49
getSequenceInfoHeifDecoder50 bool getSequenceInfo(HeifFrameInfo* frameInfo, size_t *frameCount) {
51 return false;
52 }
53
decodeHeifDecoder54 bool decode(HeifFrameInfo*) {
55 return false;
56 }
57
decodeSequenceHeifDecoder58 bool decodeSequence(int frameIndex, HeifFrameInfo* frameInfo) {
59 return false;
60 }
61
setOutputColorHeifDecoder62 bool setOutputColor(HeifColorFormat) {
63 return false;
64 }
65
getScanlineHeifDecoder66 bool getScanline(uint8_t*) {
67 return false;
68 }
69
skipScanlinesHeifDecoder70 int skipScanlines(int) {
71 return 0;
72 }
73
getColorDepthHeifDecoder74 uint32_t getColorDepth() {
75 return 0;
76 }
77 };
78
createHeifDecoder()79 static inline HeifDecoder* createHeifDecoder() { return new HeifDecoder; }
80
81 #endif//SkStubHeifDecoderAPI_DEFINED
82