blob: 63e28ae94750aa88a947bec7685d5b9dad3a5d80 [file] [log] [blame]
// Copyright 2016 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc.
#include <memory>
#include "core/fxcodec/progressive_decoder_iface.h"
#include "core/fxcrt/retain_ptr.h"
#error "PNG must be enabled"
namespace fxcodec {
class PngDecoder {
class Delegate {
virtual bool PngReadHeader(int width,
int height,
int bpc,
int pass,
int* color_type,
double* gamma) = 0;
// Returns true on success. |pSrcBuf| will be set if this succeeds.
// |pSrcBuf| does not take ownership of the buffer.
virtual bool PngAskScanlineBuf(int line, uint8_t** pSrcBuf) = 0;
virtual void PngFillScanlineBufCompleted(int pass, int line) = 0;
static std::unique_ptr<ProgressiveDecoderIface::Context> StartDecode(
Delegate* pDelegate);
static bool ContinueDecode(ProgressiveDecoderIface::Context* pContext,
RetainPtr<CFX_CodecMemory> codec_memory,
CFX_DIBAttribute* pAttribute);
PngDecoder() = delete;
PngDecoder(const PngDecoder&) = delete;
PngDecoder& operator=(const PngDecoder&) = delete;
} // namespace fxcodec
using PngDecoder = fxcodec::PngDecoder;