SkStubHeifDecoderAPI.h

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/*
 * Copyright 2017 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
#ifndef SkStubHeifDecoderAPI_DEFINED
#define SkStubHeifDecoderAPI_DEFINED
 
// This stub implementation of HeifDecoderAPI.h lets us compile SkHeifCodec.cpp
// even when libheif is not available.  It, of course, does nothing and fails to decode.
 
#include <memory>
#include <stddef.h>
#include <stdint.h>
 
enum HeifColorFormat {
    kHeifColorFormat_RGB565,
    kHeifColorFormat_RGBA_8888,
    kHeifColorFormat_BGRA_8888,
    kHeifColorFormat_RGBA_1010102,
};
 
struct HeifStream {
    virtual ~HeifStream() {}
 
    virtual size_t read(void*, size_t) = 0;
    virtual bool   rewind()            = 0;
    virtual bool   seek(size_t)        = 0;
    virtual bool   hasLength() const   = 0;
    virtual size_t getLength() const   = 0;
};
 
struct HeifFrameInfo {
    uint32_t mWidth;
    uint32_t mHeight;
    int32_t  mRotationAngle;           // Rotation angle, clockwise, should be multiple of 90
    uint32_t mBytesPerPixel;           // Number of bytes for one pixel
    int64_t mDurationUs;               // Duration of the frame in us
    std::vector<uint8_t> mIccData;     // ICC data array
};
 
struct HeifDecoder {
    bool init(HeifStream* stream, HeifFrameInfo*) {
        delete stream;
        return false;
    }
 
    bool getSequenceInfo(HeifFrameInfo* frameInfo, size_t *frameCount) {
        return false;
    }
 
    bool decode(HeifFrameInfo*) {
        return false;
    }
 
    bool decodeSequence(int frameIndex, HeifFrameInfo* frameInfo) {
        return false;
    }
 
    bool setOutputColor(HeifColorFormat) {
        return false;
    }
 
    bool getScanline(uint8_t*) {
        return false;
    }
 
    int skipScanlines(int) {
        return 0;
    }
 
    uint32_t getColorDepth() {
        return 0;
    }
};
 
static inline HeifDecoder* createHeifDecoder() { return new HeifDecoder; }
 
#endif//SkStubHeifDecoderAPI_DEFINED