blob: 4d9f52d43295d3971e3decd9b1d57dfa0ab36cd8 [file] [log] [blame]
* Copyright 2015 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef SkJpegDecoderMgr_DEFINED
#define SkJpegDecoderMgr_DEFINED
#include "include/codec/SkCodec.h"
#include "include/private/SkEncodedInfo.h"
#include "include/private/base/SkNoncopyable.h"
#include "src/codec/SkJpegPriv.h"
#include "src/codec/SkJpegSourceMgr.h"
extern "C" {
#include "jpeglib.h"
#include "jmorecfg.h"
#include <memory>
class SkStream;
class JpegDecoderMgr : SkNoncopyable {
* Print a useful error message and return false
bool returnFalse(const char caller[]);
* Print a useful error message and return a decode failure
SkCodec::Result returnFailure(const char caller[], SkCodec::Result result);
* Create the decode manager
* Does not take ownership of stream
JpegDecoderMgr(SkStream* stream);
* Initialize decompress struct
* Initialize the source manager
void init();
* Returns true if it successfully sets outColor to the encoded color,
* and false otherwise.
bool getEncodedColor(SkEncodedInfo::Color* outColor);
* Free memory used by the decode manager
* Get the skjpeg_error_mgr in order to set an error return jmp_buf
skjpeg_error_mgr* errorMgr() { return &fErrorMgr; }
* Get function for the decompress info struct
jpeg_decompress_struct* dinfo() { return &fDInfo; }
// Get the source manager.
SkJpegSourceMgr* getSourceMgr();
// Wrapper that calls into the full SkJpegSourceMgr interface.
struct SourceMgr : jpeg_source_mgr {
static void InitSource(j_decompress_ptr dinfo);
static void SkipInputData(j_decompress_ptr dinfo, long num_bytes_long);
static boolean FillInputBuffer(j_decompress_ptr dinfo);
static void TermSource(j_decompress_ptr dinfo);
SourceMgr(std::unique_ptr<SkJpegSourceMgr> mgr);
std::unique_ptr<SkJpegSourceMgr> fSourceMgr;
jpeg_decompress_struct fDInfo;
SourceMgr fSrcMgr;
skjpeg_error_mgr fErrorMgr;
jpeg_progress_mgr fProgressMgr;
bool fInit;