blob: 74fd618b3a7c03e7bc25f8a581dbd122a150f83e [file] [log] [blame]
// Copyright 2014 The PDFium Authors
// 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. http://www.foxitsoftware.com
#include "core/fxcodec/bmp/bmp_decoder.h"
#include <utility>
#include "core/fxcodec/bmp/cfx_bmpcontext.h"
#include "core/fxcodec/cfx_codec_memory.h"
#include "core/fxcodec/fx_codec.h"
#include "core/fxcodec/fx_codec_def.h"
#include "core/fxge/dib/fx_dib.h"
#include "third_party/base/check.h"
namespace fxcodec {
// static
std::unique_ptr<ProgressiveDecoderIface::Context> BmpDecoder::StartDecode(
Delegate* pDelegate) {
return std::make_unique<CFX_BmpContext>(pDelegate);
}
// static
BmpDecoder::Status BmpDecoder::ReadHeader(
ProgressiveDecoderIface::Context* pContext,
int32_t* width,
int32_t* height,
bool* tb_flag,
int32_t* components,
int32_t* pal_num,
const std::vector<uint32_t>** palette,
CFX_DIBAttribute* pAttribute) {
DCHECK(pAttribute);
auto* ctx = static_cast<CFX_BmpContext*>(pContext);
Status status = ctx->m_Bmp.ReadHeader();
if (status != Status::kSuccess)
return status;
*width = ctx->m_Bmp.width();
*height = ctx->m_Bmp.height();
*tb_flag = ctx->m_Bmp.img_tb_flag();
*components = ctx->m_Bmp.components();
*pal_num = ctx->m_Bmp.pal_num();
*palette = ctx->m_Bmp.palette();
pAttribute->m_wDPIUnit = CFX_DIBAttribute::kResUnitMeter;
pAttribute->m_nXDPI = ctx->m_Bmp.dpi_x();
pAttribute->m_nYDPI = ctx->m_Bmp.dpi_y();
return Status::kSuccess;
}
// static
BmpDecoder::Status BmpDecoder::LoadImage(
ProgressiveDecoderIface::Context* pContext) {
return static_cast<CFX_BmpContext*>(pContext)->m_Bmp.DecodeImage();
}
// static
FX_FILESIZE BmpDecoder::GetAvailInput(
ProgressiveDecoderIface::Context* pContext) {
return static_cast<CFX_BmpContext*>(pContext)->m_Bmp.GetAvailInput();
}
// static
bool BmpDecoder::Input(ProgressiveDecoderIface::Context* pContext,
RetainPtr<CFX_CodecMemory> codec_memory) {
auto* ctx = static_cast<CFX_BmpContext*>(pContext);
ctx->m_Bmp.SetInputBuffer(std::move(codec_memory));
return true;
}
} // namespace fxcodec