blob: 67e2c57779d15729940161d71ec0ce5d13a64e89 [file] [log] [blame]
* 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 SkHeifCodec_DEFINED
#define SkHeifCodec_DEFINED
#include "include/codec/SkCodec.h"
#include "include/codec/SkEncodedOrigin.h"
#include "include/core/SkImageInfo.h"
#include "include/core/SkStream.h"
#include "src/codec/SkFrameHolder.h"
#include "src/codec/SkSwizzler.h"
#if __has_include("HeifDecoderAPI.h")
#include "HeifDecoderAPI.h"
#include "src/codec/SkStubHeifDecoderAPI.h"
class SkHeifCodec : public SkCodec {
* Returns true if one of kHEIF or kAVIF images were detected. If |format|
* is not nullptr, it will contain the detected format. Returns false
* otherwise.
static bool IsSupported(const void*, size_t, SkEncodedImageFormat* format);
* Assumes IsSupported was called and it returned a non-nullopt value.
static std::unique_ptr<SkCodec> MakeFromStream(
std::unique_ptr<SkStream>, SkCodec::SelectionPolicy selectionPolicy,
SkEncodedImageFormat, Result*);
Result onGetPixels(
const SkImageInfo& dstInfo,
void* dst, size_t dstRowBytes,
const Options& options,
int* rowsDecoded) override;
SkEncodedImageFormat onGetEncodedFormat() const override {
return fFormat;
int onGetFrameCount() override;
bool onGetFrameInfo(int, FrameInfo*) const override;
int onGetRepetitionCount() override;
const SkFrameHolder* getFrameHolder() const override {
return &fFrameHolder;
bool conversionSupported(const SkImageInfo&, bool, bool) override;
bool onRewind() override;
* Creates an instance of the decoder
* Called only by NewFromStream
SkHeifCodec(SkEncodedInfo&&, HeifDecoder*, SkEncodedOrigin, bool animation,
void initializeSwizzler(const SkImageInfo& dstInfo, const Options& options);
void allocateStorage(const SkImageInfo& dstInfo);
int readRows(const SkImageInfo& dstInfo, void* dst,
size_t rowBytes, int count, const Options&);
* Scanline decoding.
SkSampler* getSampler(bool createIfNecessary) override;
Result onStartScanlineDecode(const SkImageInfo& dstInfo,
const Options& options) override;
int onGetScanlines(void* dst, int count, size_t rowBytes) override;
bool onSkipScanlines(int count) override;
std::unique_ptr<HeifDecoder> fHeifDecoder;
HeifFrameInfo fFrameInfo;
SkAutoTMalloc<uint8_t> fStorage;
uint8_t* fSwizzleSrcRow;
uint32_t* fColorXformSrcRow;
std::unique_ptr<SkSwizzler> fSwizzler;
bool fUseAnimation;
const SkEncodedImageFormat fFormat;
class Frame : public SkFrame {
Frame(int i) : INHERITED(i) {}
SkEncodedInfo::Alpha onReportedAlpha() const override {
return SkEncodedInfo::Alpha::kOpaque_Alpha;
using INHERITED = SkFrame;
class FrameHolder : public SkFrameHolder {
~FrameHolder() override {}
void setScreenSize(int w, int h) {
fScreenWidth = w;
fScreenHeight = h;
Frame* appendNewFrame();
const Frame* frame(int i) const;
Frame* editFrameAt(int i);
int size() const {
return static_cast<int>(fFrames.size());
void reserve(int size) {
const SkFrame* onGetFrame(int i) const override;
std::vector<Frame> fFrames;
FrameHolder fFrameHolder;
using INHERITED = SkCodec;
#endif // SkHeifCodec_DEFINED