/*
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* Copyright 2017 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkJpegPriv_DEFINED
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#define SkJpegPriv_DEFINED
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#include "SkStream.h"
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#include "SkTArray.h"
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#include <setjmp.h>
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// stdio is needed for jpeglib
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#include <stdio.h>
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extern "C" {
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#include "jpeglib.h"
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#include "jerror.h"
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}
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static constexpr uint32_t kICCMarker = JPEG_APP0 + 2;
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static constexpr uint32_t kICCMarkerHeaderSize = 14;
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static constexpr uint8_t kICCSig[] = {
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'I', 'C', 'C', '_', 'P', 'R', 'O', 'F', 'I', 'L', 'E', '\0',
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};
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/*
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* Error handling struct
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*/
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struct skjpeg_error_mgr : jpeg_error_mgr {
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class AutoPushJmpBuf {
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public:
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AutoPushJmpBuf(skjpeg_error_mgr* mgr) : fMgr(mgr) {
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fMgr->fJmpBufStack.push_back(&fJmpBuf);
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}
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~AutoPushJmpBuf() {
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SkASSERT(fMgr->fJmpBufStack.back() == &fJmpBuf);
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fMgr->fJmpBufStack.pop_back();
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}
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operator jmp_buf&() { return fJmpBuf; }
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private:
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skjpeg_error_mgr* const fMgr;
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jmp_buf fJmpBuf;
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};
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SkSTArray<4, jmp_buf*> fJmpBufStack;
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};
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#endif
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