diff options
Diffstat (limited to 'core/fxcodec/codec/ccodec_progressivedecoder.cpp')
| -rw-r--r-- | core/fxcodec/codec/ccodec_progressivedecoder.cpp | 2436 |
1 files changed, 2436 insertions, 0 deletions
diff --git a/core/fxcodec/codec/ccodec_progressivedecoder.cpp b/core/fxcodec/codec/ccodec_progressivedecoder.cpp new file mode 100644 index 0000000000..ce0ef9767c --- /dev/null +++ b/core/fxcodec/codec/ccodec_progressivedecoder.cpp @@ -0,0 +1,2436 @@ +// Copyright 2014 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. http://www.foxitsoftware.com + +#include "core/fxcodec/codec/ccodec_progressivedecoder.h" + +#include <algorithm> +#include <memory> +#include <utility> +#include <vector> + +#include "core/fxcodec/fx_codec.h" +#include "core/fxcrt/fx_stream.h" +#include "core/fxge/dib/cfx_dibitmap.h" +#include "core/fxge/fx_dib.h" +#include "third_party/base/logging.h" +#include "third_party/base/numerics/safe_math.h" +#include "third_party/base/ptr_util.h" + +#define FXCODEC_BLOCK_SIZE 4096 + +namespace { + +#ifdef PDF_ENABLE_XFA_PNG +#if _FX_OS_ == _FX_OS_MACOSX_ +const double kPngGamma = 1.7; +#else // _FX_OS_ == _FX_OS_MACOSX_ +const double kPngGamma = 2.2; +#endif // _FX_OS_ == _FX_OS_MACOSX_ +#endif // PDF_ENABLE_XFA_PNG + +void RGB2BGR(uint8_t* buffer, int width = 1) { + if (buffer && width > 0) { + uint8_t temp; + int i = 0; + int j = 0; + for (; i < width; i++, j += 3) { + temp = buffer[j]; + buffer[j] = buffer[j + 2]; + buffer[j + 2] = temp; + } + } +} + +} // namespace + +CCodec_ProgressiveDecoder::CFXCODEC_WeightTable::CFXCODEC_WeightTable() {} + +CCodec_ProgressiveDecoder::CFXCODEC_WeightTable::~CFXCODEC_WeightTable() {} + +void CCodec_ProgressiveDecoder::CFXCODEC_WeightTable::Calc(int dest_len, + int dest_min, + int dest_max, + int src_len, + int src_min, + int src_max) { + double scale, base; + scale = (float)src_len / (float)dest_len; + if (dest_len < 0) { + base = (float)(src_len); + } else { + base = 0.0f; + } + m_ItemSize = + (int)(sizeof(int) * 2 + sizeof(int) * (ceil(fabs((float)scale)) + 1)); + m_DestMin = dest_min; + m_pWeightTables.resize((dest_max - dest_min) * m_ItemSize + 4); + if (fabs((float)scale) < 1.0f) { + for (int dest_pixel = dest_min; dest_pixel < dest_max; dest_pixel++) { + PixelWeight& pixel_weights = *GetPixelWeight(dest_pixel); + double src_pos = dest_pixel * scale + scale / 2 + base; + pixel_weights.m_SrcStart = (int)floor((float)src_pos - 1.0f / 2); + pixel_weights.m_SrcEnd = (int)floor((float)src_pos + 1.0f / 2); + if (pixel_weights.m_SrcStart < src_min) { + pixel_weights.m_SrcStart = src_min; + } + if (pixel_weights.m_SrcEnd >= src_max) { + pixel_weights.m_SrcEnd = src_max - 1; + } + if (pixel_weights.m_SrcStart == pixel_weights.m_SrcEnd) { + pixel_weights.m_Weights[0] = 65536; + } else { + pixel_weights.m_Weights[1] = FXSYS_round( + (float)(src_pos - pixel_weights.m_SrcStart - 1.0f / 2) * 65536); + pixel_weights.m_Weights[0] = 65536 - pixel_weights.m_Weights[1]; + } + } + return; + } + for (int dest_pixel = dest_min; dest_pixel < dest_max; dest_pixel++) { + PixelWeight& pixel_weights = *GetPixelWeight(dest_pixel); + double src_start = dest_pixel * scale + base; + double src_end = src_start + scale; + int start_i, end_i; + if (src_start < src_end) { + start_i = (int)floor((float)src_start); + end_i = (int)ceil((float)src_end); + } else { + start_i = (int)floor((float)src_end); + end_i = (int)ceil((float)src_start); + } + if (start_i < src_min) { + start_i = src_min; + } + if (end_i >= src_max) { + end_i = src_max - 1; + } + if (start_i > end_i) { + pixel_weights.m_SrcStart = start_i; + pixel_weights.m_SrcEnd = start_i; + continue; + } + pixel_weights.m_SrcStart = start_i; + pixel_weights.m_SrcEnd = end_i; + for (int j = start_i; j <= end_i; j++) { + double dest_start = ((float)j - base) / scale; + double dest_end = ((float)(j + 1) - base) / scale; + if (dest_start > dest_end) { + double temp = dest_start; + dest_start = dest_end; + dest_end = temp; + } + double area_start = + dest_start > (float)(dest_pixel) ? dest_start : (float)(dest_pixel); + double area_end = dest_end > (float)(dest_pixel + 1) + ? (float)(dest_pixel + 1) + : dest_end; + double weight = area_start >= area_end ? 0.0f : area_end - area_start; + if (weight == 0 && j == end_i) { + pixel_weights.m_SrcEnd--; + break; + } + pixel_weights.m_Weights[j - start_i] = + FXSYS_round((float)(weight * 65536)); + } + } +} + +CCodec_ProgressiveDecoder::CFXCODEC_HorzTable::CFXCODEC_HorzTable() {} + +CCodec_ProgressiveDecoder::CFXCODEC_HorzTable::~CFXCODEC_HorzTable() {} + +void CCodec_ProgressiveDecoder::CFXCODEC_HorzTable::Calc(int dest_len, + int src_len) { + double scale = (double)dest_len / (double)src_len; + m_ItemSize = sizeof(int) * 4; + int size = dest_len * m_ItemSize + 4; + m_pWeightTables.resize(size, 0); + if (scale > 1) { + int pre_dest_col = 0; + for (int src_col = 0; src_col < src_len; src_col++) { + double dest_col_f = src_col * scale; + int dest_col = FXSYS_round((float)dest_col_f); + PixelWeight* pWeight = GetPixelWeight(dest_col); + pWeight->m_SrcStart = pWeight->m_SrcEnd = src_col; + pWeight->m_Weights[0] = 65536; + pWeight->m_Weights[1] = 0; + if (src_col == src_len - 1 && dest_col < dest_len - 1) { + for (int dest_col_index = pre_dest_col + 1; dest_col_index < dest_len; + dest_col_index++) { + pWeight = GetPixelWeight(dest_col_index); + pWeight->m_SrcStart = pWeight->m_SrcEnd = src_col; + pWeight->m_Weights[0] = 65536; + pWeight->m_Weights[1] = 0; + } + return; + } + int dest_col_len = dest_col - pre_dest_col; + for (int dest_col_index = pre_dest_col + 1; dest_col_index < dest_col; + dest_col_index++) { + pWeight = GetPixelWeight(dest_col_index); + pWeight->m_SrcStart = src_col - 1; + pWeight->m_SrcEnd = src_col; + pWeight->m_Weights[0] = + FXSYS_round((float)(((float)dest_col - (float)dest_col_index) / + (float)dest_col_len * 65536)); + pWeight->m_Weights[1] = 65536 - pWeight->m_Weights[0]; + } + pre_dest_col = dest_col; + } + return; + } + for (int dest_col = 0; dest_col < dest_len; dest_col++) { + double src_col_f = dest_col / scale; + int src_col = FXSYS_round((float)src_col_f); + PixelWeight* pWeight = GetPixelWeight(dest_col); + pWeight->m_SrcStart = pWeight->m_SrcEnd = src_col; + pWeight->m_Weights[0] = 65536; + pWeight->m_Weights[1] = 0; + } +} + +CCodec_ProgressiveDecoder::CFXCODEC_VertTable::CFXCODEC_VertTable() {} + +CCodec_ProgressiveDecoder::CFXCODEC_VertTable::~CFXCODEC_VertTable() {} + +void CCodec_ProgressiveDecoder::CFXCODEC_VertTable::Calc(int dest_len, + int src_len) { + double scale = (double)dest_len / (double)src_len; + m_ItemSize = sizeof(int) * 4; + int size = dest_len * m_ItemSize + 4; + m_pWeightTables.resize(size, 0); + if (scale <= 1) { + for (int dest_row = 0; dest_row < dest_len; dest_row++) { + PixelWeight* pWeight = GetPixelWeight(dest_row); + pWeight->m_SrcStart = dest_row; + pWeight->m_SrcEnd = dest_row; + pWeight->m_Weights[0] = 65536; + pWeight->m_Weights[1] = 0; + } + return; + } + + double step = 0.0; + int src_row = 0; + while (step < (double)dest_len) { + int start_step = (int)step; + step = scale * (++src_row); + int end_step = (int)step; + if (end_step >= dest_len) { + end_step = dest_len; + for (int dest_row = start_step; dest_row < end_step; dest_row++) { + PixelWeight* pWeight = GetPixelWeight(dest_row); + pWeight->m_SrcStart = start_step; + pWeight->m_SrcEnd = start_step; + pWeight->m_Weights[0] = 65536; + pWeight->m_Weights[1] = 0; + } + return; + } + int length = end_step - start_step; + { + PixelWeight* pWeight = GetPixelWeight(start_step); + pWeight->m_SrcStart = start_step; + pWeight->m_SrcEnd = start_step; + pWeight->m_Weights[0] = 65536; + pWeight->m_Weights[1] = 0; + } + for (int dest_row = start_step + 1; dest_row < end_step; dest_row++) { + PixelWeight* pWeight = GetPixelWeight(dest_row); + pWeight->m_SrcStart = start_step; + pWeight->m_SrcEnd = end_step; + pWeight->m_Weights[0] = + FXSYS_round((float)(end_step - dest_row) / (float)length * 65536); + pWeight->m_Weights[1] = 65536 - pWeight->m_Weights[0]; + } + } +} + +CCodec_ProgressiveDecoder::CCodec_ProgressiveDecoder( + CCodec_ModuleMgr* pCodecMgr) + : m_pCodecMgr(pCodecMgr) {} + +CCodec_ProgressiveDecoder::~CCodec_ProgressiveDecoder() { + FX_Free(m_pSrcBuf); + FX_Free(m_pDecodeBuf); + FX_Free(m_pSrcPalette); +} + +#ifdef PDF_ENABLE_XFA_PNG +bool CCodec_ProgressiveDecoder::PngReadHeader(int width, + int height, + int bpc, + int pass, + int* color_type, + double* gamma) { + if (!m_pDeviceBitmap) { + m_SrcWidth = width; + m_SrcHeight = height; + m_SrcBPC = bpc; + m_SrcPassNumber = pass; + switch (*color_type) { + case 0: + m_SrcComponents = 1; + break; + case 4: + m_SrcComponents = 2; + break; + case 2: + m_SrcComponents = 3; + break; + case 3: + case 6: + m_SrcComponents = 4; + break; + default: + m_SrcComponents = 0; + break; + } + m_clipBox = FX_RECT(0, 0, width, height); + return false; + } + FXDIB_Format format = m_pDeviceBitmap->GetFormat(); + switch (format) { + case FXDIB_1bppMask: + case FXDIB_1bppRgb: + NOTREACHED(); + return false; + case FXDIB_8bppMask: + case FXDIB_8bppRgb: + *color_type = 0; + break; + case FXDIB_Rgb: + *color_type = 2; + break; + case FXDIB_Rgb32: + case FXDIB_Argb: + *color_type = 6; + break; + default: + NOTREACHED(); + return false; + } + *gamma = kPngGamma; + return true; +} + +bool CCodec_ProgressiveDecoder::PngAskScanlineBuf(int line, uint8_t** pSrcBuf) { + RetainPtr<CFX_DIBitmap> pDIBitmap = m_pDeviceBitmap; + if (!pDIBitmap) { + NOTREACHED(); + return false; + } + if (line >= m_clipBox.top && line < m_clipBox.bottom) { + double scale_y = static_cast<double>(m_sizeY) / m_clipBox.Height(); + int32_t row = (int32_t)((line - m_clipBox.top) * scale_y) + m_startY; + const uint8_t* src_scan = pDIBitmap->GetScanline(row); + uint8_t* dest_scan = m_pDecodeBuf; + *pSrcBuf = m_pDecodeBuf; + int32_t src_Bpp = pDIBitmap->GetBPP() >> 3; + int32_t dest_Bpp = (m_SrcFormat & 0xff) >> 3; + int32_t src_left = m_startX; + int32_t dest_left = m_clipBox.left; + src_scan += src_left * src_Bpp; + dest_scan += dest_left * dest_Bpp; + for (int32_t src_col = 0; src_col < m_sizeX; src_col++) { + PixelWeight* pPixelWeights = m_WeightHorzOO.GetPixelWeight(src_col); + if (pPixelWeights->m_SrcStart != pPixelWeights->m_SrcEnd) { + continue; + } + switch (pDIBitmap->GetFormat()) { + case FXDIB_1bppMask: + case FXDIB_1bppRgb: + NOTREACHED(); + return false; + case FXDIB_8bppMask: + case FXDIB_8bppRgb: { + if (pDIBitmap->GetPalette()) { + return false; + } + uint32_t dest_g = 0; + dest_g += pPixelWeights->m_Weights[0] * src_scan[src_col]; + dest_scan[pPixelWeights->m_SrcStart] = (uint8_t)(dest_g >> 16); + } break; + case FXDIB_Rgb: + case FXDIB_Rgb32: { + uint32_t dest_b = 0; + uint32_t dest_g = 0; + uint32_t dest_r = 0; + const uint8_t* p = src_scan + src_col * src_Bpp; + dest_b += pPixelWeights->m_Weights[0] * (*p++); + dest_g += pPixelWeights->m_Weights[0] * (*p++); + dest_r += pPixelWeights->m_Weights[0] * (*p); + uint8_t* pDes = &dest_scan[pPixelWeights->m_SrcStart * dest_Bpp]; + *pDes++ = (uint8_t)((dest_b) >> 16); + *pDes++ = (uint8_t)((dest_g) >> 16); + *pDes = (uint8_t)((dest_r) >> 16); + } break; + case FXDIB_Argb: { + uint32_t dest_r = 0; + uint32_t dest_g = 0; + uint32_t dest_b = 0; + const uint8_t* p = src_scan + src_col * src_Bpp; + dest_b += pPixelWeights->m_Weights[0] * (*p++); + dest_g += pPixelWeights->m_Weights[0] * (*p++); + dest_r += pPixelWeights->m_Weights[0] * (*p++); + uint8_t* pDes = &dest_scan[pPixelWeights->m_SrcStart * dest_Bpp]; + *pDes++ = (uint8_t)((dest_b) >> 16); + *pDes++ = (uint8_t)((dest_g) >> 16); + *pDes++ = (uint8_t)((dest_r) >> 16); + *pDes = *p; + } break; + default: + return false; + } + } + } + return true; +} + +void CCodec_ProgressiveDecoder::PngFillScanlineBufCompleted(int pass, + int line) { + RetainPtr<CFX_DIBitmap> pDIBitmap = m_pDeviceBitmap; + ASSERT(pDIBitmap); + int src_top = m_clipBox.top; + int src_bottom = m_clipBox.bottom; + int dest_top = m_startY; + int src_height = m_clipBox.Height(); + int dest_height = m_sizeY; + if (line >= src_top && line < src_bottom) { + double scale_y = static_cast<double>(dest_height) / src_height; + int src_row = line - src_top; + int dest_row = (int)(src_row * scale_y) + dest_top; + if (dest_row >= dest_top + dest_height) { + return; + } + PngOneOneMapResampleHorz(pDIBitmap, dest_row, m_pDecodeBuf, m_SrcFormat); + if (m_SrcPassNumber == 1 && scale_y > 1.0) { + ResampleVert(pDIBitmap, scale_y, dest_row); + return; + } + if (pass == 6 && scale_y > 1.0) { + ResampleVert(pDIBitmap, scale_y, dest_row); + } + } +} +#endif // PDF_ENABLE_XFA_PNG + +#ifdef PDF_ENABLE_XFA_GIF +void CCodec_ProgressiveDecoder::GifRecordCurrentPosition(uint32_t& cur_pos) { + uint32_t remain_size = + m_pCodecMgr->GetGifModule()->GetAvailInput(m_pGifContext.get(), nullptr); + cur_pos = m_offSet - remain_size; +} + +bool CCodec_ProgressiveDecoder::GifInputRecordPositionBuf( + uint32_t rcd_pos, + const FX_RECT& img_rc, + int32_t pal_num, + CFX_GifPalette* pal_ptr, + int32_t delay_time, + bool user_input, + int32_t trans_index, + int32_t disposal_method, + bool interlace) { + m_offSet = rcd_pos; + m_InvalidateGifBuffer = true; + + FXCODEC_STATUS error_status = FXCODEC_STATUS_ERROR; + if (!GifReadMoreData(m_pCodecMgr->GetGifModule(), error_status)) { + return false; + } + CFX_GifPalette* pPalette = nullptr; + if (pal_num != 0 && pal_ptr) { + pPalette = pal_ptr; + } else { + if (!m_pGifPalette) + return false; + pal_num = m_GifPltNumber; + pPalette = m_pGifPalette; + } + if (!m_pSrcPalette) + m_pSrcPalette = FX_Alloc(FX_ARGB, pal_num); + else if (pal_num > m_SrcPaletteNumber) + m_pSrcPalette = FX_Realloc(FX_ARGB, m_pSrcPalette, pal_num); + if (!m_pSrcPalette) + return false; + + m_SrcPaletteNumber = pal_num; + for (int i = 0; i < pal_num; i++) { + m_pSrcPalette[i] = + ArgbEncode(0xff, pPalette[i].r, pPalette[i].g, pPalette[i].b); + } + m_GifTransIndex = trans_index; + m_GifFrameRect = img_rc; + m_SrcPassNumber = interlace ? 4 : 1; + int32_t pal_index = m_GifBgIndex; + RetainPtr<CFX_DIBitmap> pDevice = m_pDeviceBitmap; + if (trans_index >= pal_num) + trans_index = -1; + if (trans_index != -1) { + m_pSrcPalette[trans_index] &= 0x00ffffff; + if (pDevice->HasAlpha()) + pal_index = trans_index; + } + if (pal_index >= pal_num) + return false; + + int startX = m_startX; + int startY = m_startY; + int sizeX = m_sizeX; + int sizeY = m_sizeY; + int Bpp = pDevice->GetBPP() / 8; + FX_ARGB argb = m_pSrcPalette[pal_index]; + for (int row = 0; row < sizeY; row++) { + uint8_t* pScanline = + pDevice->GetWritableScanline(row + startY) + startX * Bpp; + switch (m_TransMethod) { + case 3: { + uint8_t gray = + FXRGB2GRAY(FXARGB_R(argb), FXARGB_G(argb), FXARGB_B(argb)); + memset(pScanline, gray, sizeX); + break; + } + case 8: { + for (int col = 0; col < sizeX; col++) { + *pScanline++ = FXARGB_B(argb); + *pScanline++ = FXARGB_G(argb); + *pScanline++ = FXARGB_R(argb); + pScanline += Bpp - 3; + } + break; + } + case 12: { + for (int col = 0; col < sizeX; col++) { + FXARGB_SETDIB(pScanline, argb); + pScanline += 4; + } + break; + } + } + } + return true; +} + +void CCodec_ProgressiveDecoder::GifReadScanline(int32_t row_num, + uint8_t* row_buf) { + RetainPtr<CFX_DIBitmap> pDIBitmap = m_pDeviceBitmap; + ASSERT(pDIBitmap); + int32_t img_width = m_GifFrameRect.Width(); + if (!pDIBitmap->HasAlpha()) { + uint8_t* byte_ptr = row_buf; + for (int i = 0; i < img_width; i++) { + if (*byte_ptr == m_GifTransIndex) { + *byte_ptr = m_GifBgIndex; + } + byte_ptr++; + } + } + int32_t pal_index = m_GifBgIndex; + if (m_GifTransIndex != -1 && m_pDeviceBitmap->HasAlpha()) { + pal_index = m_GifTransIndex; + } + memset(m_pDecodeBuf, pal_index, m_SrcWidth); + bool bLastPass = (row_num % 2) == 1; + int32_t line = row_num + m_GifFrameRect.top; + int32_t left = m_GifFrameRect.left; + memcpy(m_pDecodeBuf + left, row_buf, img_width); + int src_top = m_clipBox.top; + int src_bottom = m_clipBox.bottom; + int dest_top = m_startY; + int src_height = m_clipBox.Height(); + int dest_height = m_sizeY; + if (line < src_top || line >= src_bottom) + return; + + double scale_y = static_cast<double>(dest_height) / src_height; + int src_row = line - src_top; + int dest_row = (int)(src_row * scale_y) + dest_top; + if (dest_row >= dest_top + dest_height) + return; + + ReSampleScanline(pDIBitmap, dest_row, m_pDecodeBuf, m_SrcFormat); + if (scale_y > 1.0 && m_SrcPassNumber == 1) { + ResampleVert(pDIBitmap, scale_y, dest_row); + return; + } + if (scale_y <= 1.0) + return; + + int dest_bottom = dest_top + m_sizeY; + int dest_Bpp = pDIBitmap->GetBPP() >> 3; + uint32_t dest_ScanOffet = m_startX * dest_Bpp; + if (dest_row + (int)scale_y >= dest_bottom - 1) { + const uint8_t* scan_src = pDIBitmap->GetScanline(dest_row) + dest_ScanOffet; + int cur_row = dest_row; + while (++cur_row < dest_bottom) { + uint8_t* scan_des = + pDIBitmap->GetWritableScanline(cur_row) + dest_ScanOffet; + uint32_t size = m_sizeX * dest_Bpp; + memmove(scan_des, scan_src, size); + } + } + if (bLastPass) + GifDoubleLineResampleVert(pDIBitmap, scale_y, dest_row); +} +#endif // PDF_ENABLE_XFA_GIF + +#ifdef PDF_ENABLE_XFA_BMP +bool CCodec_ProgressiveDecoder::BmpInputImagePositionBuf(uint32_t rcd_pos) { + m_offSet = rcd_pos; + FXCODEC_STATUS error_status = FXCODEC_STATUS_ERROR; + return BmpReadMoreData(m_pCodecMgr->GetBmpModule(), error_status); +} + +void CCodec_ProgressiveDecoder::BmpReadScanline( + uint32_t row_num, + const std::vector<uint8_t>& row_buf) { + RetainPtr<CFX_DIBitmap> pDIBitmap = m_pDeviceBitmap; + ASSERT(pDIBitmap); + std::copy(row_buf.begin(), row_buf.begin() + m_ScanlineSize, m_pDecodeBuf); + int src_top = m_clipBox.top; + int src_bottom = m_clipBox.bottom; + int dest_top = m_startY; + int src_height = m_clipBox.Height(); + int dest_height = m_sizeY; + if ((src_top >= 0 && row_num < static_cast<uint32_t>(src_top)) || + src_bottom < 0 || row_num >= static_cast<uint32_t>(src_bottom)) { + return; + } + + double scale_y = static_cast<double>(dest_height) / src_height; + int src_row = row_num - src_top; + int dest_row = (int)(src_row * scale_y) + dest_top; + if (dest_row >= dest_top + dest_height) + return; + + ReSampleScanline(pDIBitmap, dest_row, m_pDecodeBuf, m_SrcFormat); + if (scale_y <= 1.0) + return; + + if (m_BmpIsTopBottom) { + ResampleVert(pDIBitmap, scale_y, dest_row); + return; + } + ResampleVertBT(pDIBitmap, scale_y, dest_row); +} + +void CCodec_ProgressiveDecoder::ResampleVertBT( + const RetainPtr<CFX_DIBitmap>& pDeviceBitmap, + double scale_y, + int dest_row) { + int dest_Bpp = pDeviceBitmap->GetBPP() >> 3; + uint32_t dest_ScanOffet = m_startX * dest_Bpp; + int dest_top = m_startY; + int dest_bottom = m_startY + m_sizeY; + pdfium::base::CheckedNumeric<int> check_dest_row_1 = dest_row; + check_dest_row_1 += pdfium::base::checked_cast<int>(scale_y); + int dest_row_1 = check_dest_row_1.ValueOrDie(); + if (dest_row_1 >= dest_bottom - 1) { + const uint8_t* scan_src = + pDeviceBitmap->GetScanline(dest_row) + dest_ScanOffet; + while (++dest_row < dest_bottom) { + uint8_t* scan_des = + pDeviceBitmap->GetWritableScanline(dest_row) + dest_ScanOffet; + uint32_t size = m_sizeX * dest_Bpp; + memmove(scan_des, scan_src, size); + } + return; + } + for (; dest_row_1 > dest_row; dest_row_1--) { + uint8_t* scan_des = + pDeviceBitmap->GetWritableScanline(dest_row_1) + dest_ScanOffet; + PixelWeight* pWeight = m_WeightVert.GetPixelWeight(dest_row_1 - dest_top); + const uint8_t* scan_src1 = + pDeviceBitmap->GetScanline(pWeight->m_SrcStart + dest_top) + + dest_ScanOffet; + const uint8_t* scan_src2 = + pDeviceBitmap->GetScanline(pWeight->m_SrcEnd + dest_top) + + dest_ScanOffet; + for (int dest_col = 0; dest_col < m_sizeX; dest_col++) { + switch (pDeviceBitmap->GetFormat()) { + case FXDIB_Invalid: + case FXDIB_1bppMask: + case FXDIB_1bppRgb: + return; + case FXDIB_8bppMask: + case FXDIB_8bppRgb: { + if (pDeviceBitmap->GetPalette()) { + return; + } + int dest_g = 0; + dest_g += pWeight->m_Weights[0] * (*scan_src1++); + dest_g += pWeight->m_Weights[1] * (*scan_src2++); + *scan_des++ = (uint8_t)(dest_g >> 16); + } break; + case FXDIB_Rgb: + case FXDIB_Rgb32: { + uint32_t dest_b = 0; + uint32_t dest_g = 0; + uint32_t dest_r = 0; + dest_b += pWeight->m_Weights[0] * (*scan_src1++); + dest_g += pWeight->m_Weights[0] * (*scan_src1++); + dest_r += pWeight->m_Weights[0] * (*scan_src1++); + scan_src1 += dest_Bpp - 3; + dest_b += pWeight->m_Weights[1] * (*scan_src2++); + dest_g += pWeight->m_Weights[1] * (*scan_src2++); + dest_r += pWeight->m_Weights[1] * (*scan_src2++); + scan_src2 += dest_Bpp - 3; + *scan_des++ = (uint8_t)((dest_b) >> 16); + *scan_des++ = (uint8_t)((dest_g) >> 16); + *scan_des++ = (uint8_t)((dest_r) >> 16); + scan_des += dest_Bpp - 3; + } break; + case FXDIB_Argb: { + uint32_t dest_a = 0; + uint32_t dest_b = 0; + uint32_t dest_g = 0; + uint32_t dest_r = 0; + dest_b += pWeight->m_Weights[0] * (*scan_src1++); + dest_g += pWeight->m_Weights[0] * (*scan_src1++); + dest_r += pWeight->m_Weights[0] * (*scan_src1++); + dest_a += pWeight->m_Weights[0] * (*scan_src1++); + dest_b += pWeight->m_Weights[1] * (*scan_src2++); + dest_g += pWeight->m_Weights[1] * (*scan_src2++); + dest_r += pWeight->m_Weights[1] * (*scan_src2++); + dest_a += pWeight->m_Weights[1] * (*scan_src2++); + *scan_des++ = (uint8_t)((dest_b) >> 16); + *scan_des++ = (uint8_t)((dest_g) >> 16); + *scan_des++ = (uint8_t)((dest_r) >> 16); + *scan_des++ = (uint8_t)((dest_a) >> 16); + } break; + default: + return; + } + } + } +} + +bool CCodec_ProgressiveDecoder::BmpDetectImageType(CFX_DIBAttribute* pAttribute, + uint32_t size) { + CCodec_BmpModule* pBmpModule = m_pCodecMgr->GetBmpModule(); + if (!pBmpModule) { + m_status = FXCODEC_STATUS_ERR_MEMORY; + return false; + } + + m_pBmpContext = pBmpModule->Start(this); + if (!m_pBmpContext) { + m_status = FXCODEC_STATUS_ERR_MEMORY; + return false; + } + + if (!m_pFile->ReadBlock(m_pSrcBuf, 0, size)) { + m_status = FXCODEC_STATUS_ERR_READ; + return false; + } + + m_offSet += size; + pBmpModule->Input(m_pBmpContext.get(), {m_pSrcBuf, size}); + std::vector<uint32_t> palette; + int32_t readResult = pBmpModule->ReadHeader( + m_pBmpContext.get(), &m_SrcWidth, &m_SrcHeight, &m_BmpIsTopBottom, + &m_SrcComponents, &m_SrcPaletteNumber, &palette, pAttribute); + while (readResult == 2) { + FXCODEC_STATUS error_status = FXCODEC_STATUS_ERR_FORMAT; + if (!BmpReadMoreData(pBmpModule, error_status)) { + m_status = error_status; + return false; + } + readResult = pBmpModule->ReadHeader( + m_pBmpContext.get(), &m_SrcWidth, &m_SrcHeight, &m_BmpIsTopBottom, + &m_SrcComponents, &m_SrcPaletteNumber, &palette, pAttribute); + } + + if (readResult != 1) { + m_pBmpContext.reset(); + m_status = FXCODEC_STATUS_ERR_FORMAT; + return false; + } + + FXDIB_Format format = FXDIB_Invalid; + switch (m_SrcComponents) { + case 1: + m_SrcFormat = FXCodec_8bppRgb; + format = FXDIB_8bppRgb; + break; + case 3: + m_SrcFormat = FXCodec_Rgb; + format = FXDIB_Rgb; + break; + case 4: + m_SrcFormat = FXCodec_Rgb32; + format = FXDIB_Rgb32; + break; + default: + m_pBmpContext.reset(); + m_status = FXCODEC_STATUS_ERR_FORMAT; + return false; + } + + uint32_t pitch = 0; + uint32_t neededData = 0; + if (!CFX_DIBitmap::CalculatePitchAndSize(m_SrcWidth, m_SrcHeight, format, + &pitch, &neededData)) { + m_pBmpContext.reset(); + m_status = FXCODEC_STATUS_ERR_FORMAT; + return false; + } + + uint32_t availableData = m_SrcSize > m_offSet ? m_SrcSize - m_offSet : 0; + if (neededData > availableData) { + m_pBmpContext.reset(); + m_status = FXCODEC_STATUS_ERR_FORMAT; + return false; + } + + m_SrcBPC = 8; + m_clipBox = FX_RECT(0, 0, m_SrcWidth, m_SrcHeight); + FX_Free(m_pSrcPalette); + if (m_SrcPaletteNumber) { + m_pSrcPalette = FX_Alloc(FX_ARGB, m_SrcPaletteNumber); + memcpy(m_pSrcPalette, palette.data(), m_SrcPaletteNumber * sizeof(FX_ARGB)); + } else { + m_pSrcPalette = nullptr; + } + return true; +} + +bool CCodec_ProgressiveDecoder::BmpReadMoreData(CCodec_BmpModule* pBmpModule, + FXCODEC_STATUS& err_status) { + uint32_t dwSize = (uint32_t)m_pFile->GetSize(); + if (dwSize <= m_offSet) + return false; + + dwSize = dwSize - m_offSet; + FX_SAFE_UINT32 avail_input = + pBmpModule->GetAvailInput(m_pBmpContext.get(), nullptr); + if (!avail_input.IsValid()) + return false; + + uint32_t dwAvail = avail_input.ValueOrDie(); + if (dwAvail == m_SrcSize) { + if (dwSize > FXCODEC_BLOCK_SIZE) { + dwSize = FXCODEC_BLOCK_SIZE; + } + m_SrcSize = (dwSize + dwAvail + FXCODEC_BLOCK_SIZE - 1) / + FXCODEC_BLOCK_SIZE * FXCODEC_BLOCK_SIZE; + m_pSrcBuf = FX_TryRealloc(uint8_t, m_pSrcBuf, m_SrcSize); + if (!m_pSrcBuf) { + err_status = FXCODEC_STATUS_ERR_MEMORY; + return false; + } + } else { + uint32_t dwConsume = m_SrcSize - dwAvail; + if (dwAvail) { + memmove(m_pSrcBuf, m_pSrcBuf + dwConsume, dwAvail); + } + if (dwSize > dwConsume) { + dwSize = dwConsume; + } + } + if (!m_pFile->ReadBlock(m_pSrcBuf + dwAvail, m_offSet, dwSize)) { + err_status = FXCODEC_STATUS_ERR_READ; + return false; + } + m_offSet += dwSize; + pBmpModule->Input(m_pBmpContext.get(), {m_pSrcBuf, dwSize + dwAvail}); + return true; +} + +FXCODEC_STATUS CCodec_ProgressiveDecoder::BmpStartDecode( + const RetainPtr<CFX_DIBitmap>& pDIBitmap) { + CCodec_BmpModule* pBmpModule = m_pCodecMgr->GetBmpModule(); + if (!pBmpModule) { + m_pDeviceBitmap = nullptr; + m_pFile = nullptr; + m_status = FXCODEC_STATUS_ERR_MEMORY; + return m_status; + } + GetTransMethod(m_pDeviceBitmap->GetFormat(), m_SrcFormat); + m_ScanlineSize = (m_SrcWidth * m_SrcComponents + 3) / 4 * 4; + FX_Free(m_pDecodeBuf); + m_pDecodeBuf = FX_Alloc(uint8_t, m_ScanlineSize); + memset(m_pDecodeBuf, 0, m_ScanlineSize); + m_WeightHorz.Calc(m_sizeX, 0, m_sizeX, m_clipBox.Width(), 0, + m_clipBox.Width()); + m_WeightVert.Calc(m_sizeY, m_clipBox.Height()); + m_status = FXCODEC_STATUS_DECODE_TOBECONTINUE; + return m_status; +} + +FXCODEC_STATUS CCodec_ProgressiveDecoder::BmpContinueDecode() { + CCodec_BmpModule* pBmpModule = m_pCodecMgr->GetBmpModule(); + if (!pBmpModule) { + m_status = FXCODEC_STATUS_ERR_MEMORY; + return m_status; + } + while (true) { + int32_t readRes = pBmpModule->LoadImage(m_pBmpContext.get()); + while (readRes == 2) { + FXCODEC_STATUS error_status = FXCODEC_STATUS_DECODE_FINISH; + if (!BmpReadMoreData(pBmpModule, error_status)) { + m_pDeviceBitmap = nullptr; + m_pFile = nullptr; + m_status = error_status; + return m_status; + } + readRes = pBmpModule->LoadImage(m_pBmpContext.get()); + } + if (readRes == 1) { + m_pDeviceBitmap = nullptr; + m_pFile = nullptr; + m_status = FXCODEC_STATUS_DECODE_FINISH; + return m_status; + } + m_pDeviceBitmap = nullptr; + m_pFile = nullptr; + m_status = FXCODEC_STATUS_ERROR; + return m_status; + } +} +#endif // PDF_ENABLE_XFA_BMP + +#ifdef PDF_ENABLE_XFA_GIF +bool CCodec_ProgressiveDecoder::GifReadMoreData(CCodec_GifModule* pGifModule, + FXCODEC_STATUS& err_status) { + if (static_cast<uint32_t>(m_pFile->GetSize()) <= m_offSet) + return false; + + uint32_t dwFileRemaining = m_pFile->GetSize() - m_offSet; + uint32_t dwUnusedBuffer = + !m_InvalidateGifBuffer + ? pGifModule->GetAvailInput(m_pGifContext.get(), nullptr) + : 0; + uint32_t dwAmountToFetchFromFile = dwFileRemaining; + if (dwUnusedBuffer == m_SrcSize) { + if (dwFileRemaining > FXCODEC_BLOCK_SIZE) + dwAmountToFetchFromFile = FXCODEC_BLOCK_SIZE; + m_SrcSize = std::min( + (dwAmountToFetchFromFile + dwUnusedBuffer + FXCODEC_BLOCK_SIZE - 1) / + FXCODEC_BLOCK_SIZE * FXCODEC_BLOCK_SIZE, + static_cast<uint32_t>(m_pFile->GetSize())); + m_pSrcBuf = FX_TryRealloc(uint8_t, m_pSrcBuf, m_SrcSize); + if (!m_pSrcBuf) { + err_status = FXCODEC_STATUS_ERR_MEMORY; + return false; + } + } else { + uint32_t dwConsumed = m_SrcSize - dwUnusedBuffer; + if (dwUnusedBuffer) + memmove(m_pSrcBuf, m_pSrcBuf + dwConsumed, dwUnusedBuffer); + if (dwFileRemaining > dwConsumed) + dwAmountToFetchFromFile = dwConsumed; + } + + if (!m_pFile->ReadBlock(m_pSrcBuf + dwUnusedBuffer, m_offSet, + dwAmountToFetchFromFile)) { + err_status = FXCODEC_STATUS_ERR_READ; + return false; + } + + m_offSet += dwAmountToFetchFromFile; + pGifModule->Input(m_pGifContext.get(), + {m_pSrcBuf, dwAmountToFetchFromFile + dwUnusedBuffer}); + m_InvalidateGifBuffer = false; + return true; +} + +bool CCodec_ProgressiveDecoder::GifDetectImageType(CFX_DIBAttribute* pAttribute, + uint32_t size) { + CCodec_GifModule* pGifModule = m_pCodecMgr->GetGifModule(); + if (!pGifModule) { + m_status = FXCODEC_STATUS_ERR_MEMORY; + return false; + } + m_pGifContext = pGifModule->Start(this); + bool bResult = m_pFile->ReadBlock(m_pSrcBuf, 0, size); + if (!bResult) { + m_status = FXCODEC_STATUS_ERR_READ; + return false; + } + m_offSet += size; + pGifModule->Input(m_pGifContext.get(), {m_pSrcBuf, size}); + m_SrcComponents = 1; + CFX_GifDecodeStatus readResult = pGifModule->ReadHeader( + m_pGifContext.get(), &m_SrcWidth, &m_SrcHeight, &m_GifPltNumber, + &m_pGifPalette, &m_GifBgIndex, nullptr); + while (readResult == CFX_GifDecodeStatus::Unfinished) { + FXCODEC_STATUS error_status = FXCODEC_STATUS_ERR_FORMAT; + if (!GifReadMoreData(pGifModule, error_status)) { + m_pGifContext = nullptr; + m_status = error_status; + return false; + } + readResult = pGifModule->ReadHeader(m_pGifContext.get(), &m_SrcWidth, + &m_SrcHeight, &m_GifPltNumber, + &m_pGifPalette, &m_GifBgIndex, nullptr); + } + if (readResult == CFX_GifDecodeStatus::Success) { + m_SrcBPC = 8; + m_clipBox = FX_RECT(0, 0, m_SrcWidth, m_SrcHeight); + return true; + } + m_pGifContext = nullptr; + m_status = FXCODEC_STATUS_ERR_FORMAT; + return false; +} + +FXCODEC_STATUS CCodec_ProgressiveDecoder::GifStartDecode( + const RetainPtr<CFX_DIBitmap>& pDIBitmap) { + CCodec_GifModule* pGifModule = m_pCodecMgr->GetGifModule(); + if (!pGifModule) { + m_pDeviceBitmap = nullptr; + m_pFile = nullptr; + m_status = FXCODEC_STATUS_ERR_MEMORY; + return m_status; + } + m_SrcFormat = FXCodec_8bppRgb; + GetTransMethod(m_pDeviceBitmap->GetFormat(), m_SrcFormat); + int scanline_size = (m_SrcWidth + 3) / 4 * 4; + FX_Free(m_pDecodeBuf); + m_pDecodeBuf = FX_Alloc(uint8_t, scanline_size); + memset(m_pDecodeBuf, 0, scanline_size); + m_WeightHorz.Calc(m_sizeX, 0, m_sizeX, m_clipBox.Width(), 0, + m_clipBox.Width()); + m_WeightVert.Calc(m_sizeY, m_clipBox.Height()); + m_FrameCur = 0; + m_status = FXCODEC_STATUS_DECODE_TOBECONTINUE; + return m_status; +} + +FXCODEC_STATUS CCodec_ProgressiveDecoder::GifContinueDecode() { + CCodec_GifModule* pGifModule = m_pCodecMgr->GetGifModule(); + if (!pGifModule) { + m_pDeviceBitmap = nullptr; + m_pFile = nullptr; + m_status = FXCODEC_STATUS_ERR_MEMORY; + return m_status; + } + + CFX_GifDecodeStatus readRes = + pGifModule->LoadFrame(m_pGifContext.get(), m_FrameCur, nullptr); + while (readRes == CFX_GifDecodeStatus::Unfinished) { + FXCODEC_STATUS error_status = FXCODEC_STATUS_DECODE_FINISH; + if (!GifReadMoreData(pGifModule, error_status)) { + m_pDeviceBitmap = nullptr; + m_pFile = nullptr; + m_status = error_status; + return m_status; + } + readRes = pGifModule->LoadFrame(m_pGifContext.get(), m_FrameCur, nullptr); + } + + if (readRes == CFX_GifDecodeStatus::Success) { + m_pDeviceBitmap = nullptr; + m_pFile = nullptr; + m_status = FXCODEC_STATUS_DECODE_FINISH; + return m_status; + } + + m_pDeviceBitmap = nullptr; + m_pFile = nullptr; + m_status = FXCODEC_STATUS_ERROR; + return m_status; +} + +void CCodec_ProgressiveDecoder::GifDoubleLineResampleVert( + const RetainPtr<CFX_DIBitmap>& pDeviceBitmap, + double scale_y, + int dest_row) { + int dest_Bpp = pDeviceBitmap->GetBPP() >> 3; + uint32_t dest_ScanOffet = m_startX * dest_Bpp; + int dest_top = m_startY; + pdfium::base::CheckedNumeric<double> scale_y2 = scale_y; + scale_y2 *= 2; + pdfium::base::CheckedNumeric<int> check_dest_row_1 = dest_row; + check_dest_row_1 -= scale_y2.ValueOrDie(); + int dest_row_1 = check_dest_row_1.ValueOrDie(); + dest_row_1 = std::max(dest_row_1, dest_top); + for (; dest_row_1 < dest_row; dest_row_1++) { + uint8_t* scan_des = + pDeviceBitmap->GetWritableScanline(dest_row_1) + dest_ScanOffet; + PixelWeight* pWeight = m_WeightVert.GetPixelWeight(dest_row_1 - dest_top); + const uint8_t* scan_src1 = + pDeviceBitmap->GetScanline(pWeight->m_SrcStart + dest_top) + + dest_ScanOffet; + const uint8_t* scan_src2 = + pDeviceBitmap->GetScanline(pWeight->m_SrcEnd + dest_top) + + dest_ScanOffet; + for (int dest_col = 0; dest_col < m_sizeX; dest_col++) { + switch (pDeviceBitmap->GetFormat()) { + case FXDIB_Invalid: + case FXDIB_1bppMask: + case FXDIB_1bppRgb: + return; + case FXDIB_8bppMask: + case FXDIB_8bppRgb: { + if (pDeviceBitmap->GetPalette()) { + return; + } + int dest_g = 0; + dest_g += pWeight->m_Weights[0] * (*scan_src1++); + dest_g += pWeight->m_Weights[1] * (*scan_src2++); + *scan_des++ = (uint8_t)(dest_g >> 16); + } break; + case FXDIB_Rgb: + case FXDIB_Rgb32: { + uint32_t dest_b = 0; + uint32_t dest_g = 0; + uint32_t dest_r = 0; + dest_b += pWeight->m_Weights[0] * (*scan_src1++); + dest_g += pWeight->m_Weights[0] * (*scan_src1++); + dest_r += pWeight->m_Weights[0] * (*scan_src1++); + scan_src1 += dest_Bpp - 3; + dest_b += pWeight->m_Weights[1] * (*scan_src2++); + dest_g += pWeight->m_Weights[1] * (*scan_src2++); + dest_r += pWeight->m_Weights[1] * (*scan_src2++); + scan_src2 += dest_Bpp - 3; + *scan_des++ = (uint8_t)((dest_b) >> 16); + *scan_des++ = (uint8_t)((dest_g) >> 16); + *scan_des++ = (uint8_t)((dest_r) >> 16); + scan_des += dest_Bpp - 3; + } break; + case FXDIB_Argb: { + uint32_t dest_a = 0; + uint32_t dest_b = 0; + uint32_t dest_g = 0; + uint32_t dest_r = 0; + dest_b += pWeight->m_Weights[0] * (*scan_src1++); + dest_g += pWeight->m_Weights[0] * (*scan_src1++); + dest_r += pWeight->m_Weights[0] * (*scan_src1++); + dest_a += pWeight->m_Weights[0] * (*scan_src1++); + dest_b += pWeight->m_Weights[1] * (*scan_src2++); + dest_g += pWeight->m_Weights[1] * (*scan_src2++); + dest_r += pWeight->m_Weights[1] * (*scan_src2++); + dest_a += pWeight->m_Weights[1] * (*scan_src2++); + *scan_des++ = (uint8_t)((dest_b) >> 16); + *scan_des++ = (uint8_t)((dest_g) >> 16); + *scan_des++ = (uint8_t)((dest_r) >> 16); + *scan_des++ = (uint8_t)((dest_a) >> 16); + } break; + default: + return; + } + } + } + int dest_bottom = dest_top + m_sizeY - 1; + if (dest_row + (int)(2 * scale_y) >= dest_bottom && + dest_row + (int)scale_y < dest_bottom) { + GifDoubleLineResampleVert(pDeviceBitmap, scale_y, dest_row + (int)scale_y); + } +} +#endif // PDF_ENABLE_XFA_GIF + +bool CCodec_ProgressiveDecoder::JpegReadMoreData(CCodec_JpegModule* pJpegModule, + FXCODEC_STATUS& err_status) { + uint32_t dwSize = (uint32_t)m_pFile->GetSize(); + if (dwSize <= m_offSet) { + return false; + } + dwSize = dwSize - m_offSet; + uint32_t dwAvail = pJpegModule->GetAvailInput(m_pJpegContext.get(), nullptr); + if (dwAvail == m_SrcSize) { + if (dwSize > FXCODEC_BLOCK_SIZE) { + dwSize = FXCODEC_BLOCK_SIZE; + } + m_SrcSize = (dwSize + dwAvail + FXCODEC_BLOCK_SIZE - 1) / + FXCODEC_BLOCK_SIZE * FXCODEC_BLOCK_SIZE; + m_pSrcBuf = FX_TryRealloc(uint8_t, m_pSrcBuf, m_SrcSize); + if (!m_pSrcBuf) { + err_status = FXCODEC_STATUS_ERR_MEMORY; + return false; + } + } else { + uint32_t dwConsume = m_SrcSize - dwAvail; + if (dwAvail) { + memmove(m_pSrcBuf, m_pSrcBuf + dwConsume, dwAvail); + } + if (dwSize > dwConsume) { + dwSize = dwConsume; + } + } + if (!m_pFile->ReadBlock(m_pSrcBuf + dwAvail, m_offSet, dwSize)) { + err_status = FXCODEC_STATUS_ERR_READ; + return false; + } + m_offSet += dwSize; + pJpegModule->Input(m_pJpegContext.get(), m_pSrcBuf, dwSize + dwAvail); + return true; +} + +bool CCodec_ProgressiveDecoder::JpegDetectImageType( + CFX_DIBAttribute* pAttribute, + uint32_t size) { + CCodec_JpegModule* pJpegModule = m_pCodecMgr->GetJpegModule(); + m_pJpegContext = pJpegModule->Start(); + if (!m_pJpegContext) { + m_status = FXCODEC_STATUS_ERR_MEMORY; + return false; + } + if (!m_pFile->ReadBlock(m_pSrcBuf, 0, size)) { + m_status = FXCODEC_STATUS_ERR_READ; + return false; + } + m_offSet += size; + pJpegModule->Input(m_pJpegContext.get(), m_pSrcBuf, size); + // Setting jump marker before calling ReadHeader, since a longjmp to + // the marker indicates a fatal error. + if (setjmp(*m_pJpegContext->GetJumpMark()) == -1) { + m_pJpegContext.reset(); + m_status = FXCODEC_STATUS_ERR_FORMAT; + return false; + } + + int32_t readResult = + pJpegModule->ReadHeader(m_pJpegContext.get(), &m_SrcWidth, &m_SrcHeight, + &m_SrcComponents, pAttribute); + while (readResult == 2) { + FXCODEC_STATUS error_status = FXCODEC_STATUS_ERR_FORMAT; + if (!JpegReadMoreData(pJpegModule, error_status)) { + m_status = error_status; + return false; + } + readResult = + pJpegModule->ReadHeader(m_pJpegContext.get(), &m_SrcWidth, &m_SrcHeight, + &m_SrcComponents, pAttribute); + } + if (!readResult) { + m_SrcBPC = 8; + m_clipBox = FX_RECT(0, 0, m_SrcWidth, m_SrcHeight); + return true; + } + m_pJpegContext.reset(); + m_status = FXCODEC_STATUS_ERR_FORMAT; + return false; +} + +FXCODEC_STATUS CCodec_ProgressiveDecoder::JpegStartDecode( + const RetainPtr<CFX_DIBitmap>& pDIBitmap) { + int down_scale = 1; + GetDownScale(down_scale); + // Setting jump marker before calling StartScanLine, since a longjmp to + // the marker indicates a fatal error. + if (setjmp(*m_pJpegContext->GetJumpMark()) == -1) { + m_pJpegContext.reset(); + m_status = FXCODEC_STATUS_ERROR; + return FXCODEC_STATUS_ERROR; + } + + CCodec_JpegModule* pJpegModule = m_pCodecMgr->GetJpegModule(); + bool startStatus = + pJpegModule->StartScanline(m_pJpegContext.get(), down_scale); + while (!startStatus) { + FXCODEC_STATUS error_status = FXCODEC_STATUS_ERROR; + if (!JpegReadMoreData(pJpegModule, error_status)) { + m_pDeviceBitmap = nullptr; + m_pFile = nullptr; + m_status = error_status; + return m_status; + } + + startStatus = pJpegModule->StartScanline(m_pJpegContext.get(), down_scale); + } + int scanline_size = (m_SrcWidth + down_scale - 1) / down_scale; + scanline_size = (scanline_size * m_SrcComponents + 3) / 4 * 4; + FX_Free(m_pDecodeBuf); + m_pDecodeBuf = FX_Alloc(uint8_t, scanline_size); + memset(m_pDecodeBuf, 0, scanline_size); + m_WeightHorz.Calc(m_sizeX, 0, m_sizeX, m_clipBox.Width(), 0, + m_clipBox.Width()); + m_WeightVert.Calc(m_sizeY, m_clipBox.Height()); + switch (m_SrcComponents) { + case 1: + m_SrcFormat = FXCodec_8bppGray; + break; + case 3: + m_SrcFormat = FXCodec_Rgb; + break; + case 4: + m_SrcFormat = FXCodec_Cmyk; + break; + } + GetTransMethod(pDIBitmap->GetFormat(), m_SrcFormat); + m_status = FXCODEC_STATUS_DECODE_TOBECONTINUE; + return m_status; +} + +FXCODEC_STATUS CCodec_ProgressiveDecoder::JpegContinueDecode() { + CCodec_JpegModule* pJpegModule = m_pCodecMgr->GetJpegModule(); + // Setting jump marker before calling ReadScanLine, since a longjmp to + // the marker indicates a fatal error. + if (setjmp(*m_pJpegContext->GetJumpMark()) == -1) { + m_pJpegContext.reset(); + m_status = FXCODEC_STATUS_ERROR; + return FXCODEC_STATUS_ERROR; + } + + while (true) { + bool readRes = + pJpegModule->ReadScanline(m_pJpegContext.get(), m_pDecodeBuf); + while (!readRes) { + FXCODEC_STATUS error_status = FXCODEC_STATUS_DECODE_FINISH; + if (!JpegReadMoreData(pJpegModule, error_status)) { + m_pDeviceBitmap = nullptr; + m_pFile = nullptr; + m_status = error_status; + return m_status; + } + readRes = pJpegModule->ReadScanline(m_pJpegContext.get(), m_pDecodeBuf); + } + if (m_SrcFormat == FXCodec_Rgb) { + int src_Bpp = (m_SrcFormat & 0xff) >> 3; + RGB2BGR(m_pDecodeBuf + m_clipBox.left * src_Bpp, m_clipBox.Width()); + } + if (m_SrcRow >= m_clipBox.bottom) { + m_pDeviceBitmap = nullptr; + m_pFile = nullptr; + m_status = FXCODEC_STATUS_DECODE_FINISH; + return m_status; + } + Resample(m_pDeviceBitmap, m_SrcRow, m_pDecodeBuf, m_SrcFormat); + m_SrcRow++; + } +} + +#ifdef PDF_ENABLE_XFA_PNG +void CCodec_ProgressiveDecoder::PngOneOneMapResampleHorz( + const RetainPtr<CFX_DIBitmap>& pDeviceBitmap, + int32_t dest_line, + uint8_t* src_scan, + FXCodec_Format src_format) { + uint8_t* dest_scan = pDeviceBitmap->GetWritableScanline(dest_line); + int32_t src_Bpp = (m_SrcFormat & 0xff) >> 3; + int32_t dest_Bpp = pDeviceBitmap->GetBPP() >> 3; + int32_t src_left = m_clipBox.left; + int32_t dest_left = m_startX; + src_scan += src_left * src_Bpp; + dest_scan += dest_left * dest_Bpp; + for (int32_t dest_col = 0; dest_col < m_sizeX; dest_col++) { + PixelWeight* pPixelWeights = m_WeightHorzOO.GetPixelWeight(dest_col); + switch (pDeviceBitmap->GetFormat()) { + case FXDIB_1bppMask: + case FXDIB_1bppRgb: + NOTREACHED(); + return; + case FXDIB_8bppMask: + case FXDIB_8bppRgb: { + if (pDeviceBitmap->GetPalette()) { + return; + } + uint32_t dest_g = 0; + dest_g += + pPixelWeights->m_Weights[0] * src_scan[pPixelWeights->m_SrcStart]; + dest_g += + pPixelWeights->m_Weights[1] * src_scan[pPixelWeights->m_SrcEnd]; + *dest_scan++ = (uint8_t)(dest_g >> 16); + } break; + case FXDIB_Rgb: + case FXDIB_Rgb32: { + uint32_t dest_b = 0; + uint32_t dest_g = 0; + uint32_t dest_r = 0; + const uint8_t* p = src_scan; + p = src_scan + pPixelWeights->m_SrcStart * src_Bpp; + dest_b += pPixelWeights->m_Weights[0] * (*p++); + dest_g += pPixelWeights->m_Weights[0] * (*p++); + dest_r += pPixelWeights->m_Weights[0] * (*p); + p = src_scan + pPixelWeights->m_SrcEnd * src_Bpp; + dest_b += pPixelWeights->m_Weights[1] * (*p++); + dest_g += pPixelWeights->m_Weights[1] * (*p++); + dest_r += pPixelWeights->m_Weights[1] * (*p); + *dest_scan++ = (uint8_t)((dest_b) >> 16); + *dest_scan++ = (uint8_t)((dest_g) >> 16); + *dest_scan++ = (uint8_t)((dest_r) >> 16); + dest_scan += dest_Bpp - 3; + } break; + case FXDIB_Argb: { + uint32_t dest_a = 0; + uint32_t dest_b = 0; + uint32_t dest_g = 0; + uint32_t dest_r = 0; + const uint8_t* p = src_scan; + p = src_scan + pPixelWeights->m_SrcStart * src_Bpp; + dest_b += pPixelWeights->m_Weights[0] * (*p++); + dest_g += pPixelWeights->m_Weights[0] * (*p++); + dest_r += pPixelWeights->m_Weights[0] * (*p++); + dest_a += pPixelWeights->m_Weights[0] * (*p); + p = src_scan + pPixelWeights->m_SrcEnd * src_Bpp; + dest_b += pPixelWeights->m_Weights[1] * (*p++); + dest_g += pPixelWeights->m_Weights[1] * (*p++); + dest_r += pPixelWeights->m_Weights[1] * (*p++); + dest_a += pPixelWeights->m_Weights[1] * (*p); + *dest_scan++ = (uint8_t)((dest_b) >> 16); + *dest_scan++ = (uint8_t)((dest_g) >> 16); + *dest_scan++ = (uint8_t)((dest_r) >> 16); + *dest_scan++ = (uint8_t)((dest_a) >> 16); + } break; + default: + return; + } + } +} + +bool CCodec_ProgressiveDecoder::PngDetectImageType(CFX_DIBAttribute* pAttribute, + uint32_t size) { + CCodec_PngModule* pPngModule = m_pCodecMgr->GetPngModule(); + if (!pPngModule) { + m_status = FXCODEC_STATUS_ERR_MEMORY; + return false; + } + m_pPngContext = pPngModule->Start(this); + if (!m_pPngContext) { + m_status = FXCODEC_STATUS_ERR_MEMORY; + return false; + } + bool bResult = m_pFile->ReadBlock(m_pSrcBuf, 0, size); + if (!bResult) { + m_status = FXCODEC_STATUS_ERR_READ; + return false; + } + + m_offSet += size; + bResult = pPngModule->Input(m_pPngContext.get(), m_pSrcBuf, size, pAttribute); + while (bResult) { + uint32_t remain_size = static_cast<uint32_t>(m_pFile->GetSize()) - m_offSet; + uint32_t input_size = + remain_size > FXCODEC_BLOCK_SIZE ? FXCODEC_BLOCK_SIZE : remain_size; + if (input_size == 0) { + m_pPngContext.reset(); + m_status = FXCODEC_STATUS_ERR_FORMAT; + return false; + } + if (m_pSrcBuf && input_size > m_SrcSize) { + FX_Free(m_pSrcBuf); + m_pSrcBuf = FX_Alloc(uint8_t, input_size); + memset(m_pSrcBuf, 0, input_size); + m_SrcSize = input_size; + } + bResult = m_pFile->ReadBlock(m_pSrcBuf, m_offSet, input_size); + if (!bResult) { + m_status = FXCODEC_STATUS_ERR_READ; + return false; + } + m_offSet += input_size; + bResult = pPngModule->Input(m_pPngContext.get(), m_pSrcBuf, input_size, + pAttribute); + } + ASSERT(!bResult); + m_pPngContext.reset(); + if (m_SrcPassNumber == 0) { + m_status = FXCODEC_STATUS_ERR_FORMAT; + return false; + } + return true; +} + +FXCODEC_STATUS CCodec_ProgressiveDecoder::PngStartDecode( + const RetainPtr<CFX_DIBitmap>& pDIBitmap) { + CCodec_PngModule* pPngModule = m_pCodecMgr->GetPngModule(); + if (!pPngModule) { + m_pDeviceBitmap = nullptr; + m_pFile = nullptr; + m_status = FXCODEC_STATUS_ERR_MEMORY; + return m_status; + } + m_pPngContext = pPngModule->Start(this); + if (!m_pPngContext) { + m_pDeviceBitmap = nullptr; + m_pFile = nullptr; + m_status = FXCODEC_STATUS_ERR_MEMORY; + return m_status; + } + m_offSet = 0; + switch (m_pDeviceBitmap->GetFormat()) { + case FXDIB_8bppMask: + case FXDIB_8bppRgb: + m_SrcComponents = 1; + m_SrcFormat = FXCodec_8bppGray; + break; + case FXDIB_Rgb: + m_SrcComponents = 3; + m_SrcFormat = FXCodec_Rgb; + break; + case FXDIB_Rgb32: + case FXDIB_Argb: + m_SrcComponents = 4; + m_SrcFormat = FXCodec_Argb; + break; + default: { + m_pDeviceBitmap = nullptr; + m_pFile = nullptr; + m_status = FXCODEC_STATUS_ERR_PARAMS; + return m_status; + } + } + GetTransMethod(m_pDeviceBitmap->GetFormat(), m_SrcFormat); + int scanline_size = (m_SrcWidth * m_SrcComponents + 3) / 4 * 4; + FX_Free(m_pDecodeBuf); + m_pDecodeBuf = FX_Alloc(uint8_t, scanline_size); + memset(m_pDecodeBuf, 0, scanline_size); + m_WeightHorzOO.Calc(m_sizeX, m_clipBox.Width()); + m_WeightVert.Calc(m_sizeY, m_clipBox.Height()); + m_status = FXCODEC_STATUS_DECODE_TOBECONTINUE; + return m_status; +} + +FXCODEC_STATUS CCodec_ProgressiveDecoder::PngContinueDecode() { + CCodec_PngModule* pPngModule = m_pCodecMgr->GetPngModule(); + if (!pPngModule) { + m_status = FXCODEC_STATUS_ERR_MEMORY; + return m_status; + } + while (true) { + uint32_t remain_size = (uint32_t)m_pFile->GetSize() - m_offSet; + uint32_t input_size = + remain_size > FXCODEC_BLOCK_SIZE ? FXCODEC_BLOCK_SIZE : remain_size; + if (input_size == 0) { + m_pPngContext.reset(); + m_pDeviceBitmap = nullptr; + m_pFile = nullptr; + m_status = FXCODEC_STATUS_DECODE_FINISH; + return m_status; + } + if (m_pSrcBuf && input_size > m_SrcSize) { + FX_Free(m_pSrcBuf); + m_pSrcBuf = FX_Alloc(uint8_t, input_size); + memset(m_pSrcBuf, 0, input_size); + m_SrcSize = input_size; + } + bool bResult = m_pFile->ReadBlock(m_pSrcBuf, m_offSet, input_size); + if (!bResult) { + m_pDeviceBitmap = nullptr; + m_pFile = nullptr; + m_status = FXCODEC_STATUS_ERR_READ; + return m_status; + } + m_offSet += input_size; + bResult = + pPngModule->Input(m_pPngContext.get(), m_pSrcBuf, input_size, nullptr); + if (!bResult) { + m_pDeviceBitmap = nullptr; + m_pFile = nullptr; + m_status = FXCODEC_STATUS_ERROR; + return m_status; + } + } +} +#endif // PDF_ENABLE_XFA_PNG + +#ifdef PDF_ENABLE_XFA_TIFF +bool CCodec_ProgressiveDecoder::TiffDetectImageType( + CFX_DIBAttribute* pAttribute, + uint32_t size) { + CCodec_TiffModule* pTiffModule = m_pCodecMgr->GetTiffModule(); + if (!pTiffModule) { + m_status = FXCODEC_STATUS_ERR_FORMAT; + return false; + } + m_pTiffContext = pTiffModule->CreateDecoder(m_pFile); + if (!m_pTiffContext) { + m_status = FXCODEC_STATUS_ERR_FORMAT; + return false; + } + int32_t dummy_bpc; + bool ret = pTiffModule->LoadFrameInfo(m_pTiffContext.get(), 0, &m_SrcWidth, + &m_SrcHeight, &m_SrcComponents, + &dummy_bpc, pAttribute); + m_SrcComponents = 4; + m_clipBox = FX_RECT(0, 0, m_SrcWidth, m_SrcHeight); + if (!ret) { + m_pTiffContext.reset(); + m_status = FXCODEC_STATUS_ERR_FORMAT; + return false; + } + return true; +} + +FXCODEC_STATUS CCodec_ProgressiveDecoder::TiffContinueDecode() { + CCodec_TiffModule* pTiffModule = m_pCodecMgr->GetTiffModule(); + if (!pTiffModule) { + m_status = FXCODEC_STATUS_ERR_MEMORY; + return m_status; + } + bool ret = false; + if (m_pDeviceBitmap->GetBPP() == 32 && + m_pDeviceBitmap->GetWidth() == m_SrcWidth && m_SrcWidth == m_sizeX && + m_pDeviceBitmap->GetHeight() == m_SrcHeight && m_SrcHeight == m_sizeY && + m_startX == 0 && m_startY == 0 && m_clipBox.left == 0 && + m_clipBox.top == 0 && m_clipBox.right == m_SrcWidth && + m_clipBox.bottom == m_SrcHeight) { + ret = pTiffModule->Decode(m_pTiffContext.get(), m_pDeviceBitmap); + m_pDeviceBitmap = nullptr; + m_pFile = nullptr; + if (!ret) { + m_status = FXCODEC_STATUS_ERROR; + return m_status; + } + m_status = FXCODEC_STATUS_DECODE_FINISH; + return m_status; + } + + auto pDIBitmap = pdfium::MakeRetain<CFX_DIBitmap>(); + pDIBitmap->Create(m_SrcWidth, m_SrcHeight, FXDIB_Argb); + if (!pDIBitmap->GetBuffer()) { + m_pDeviceBitmap = nullptr; + m_pFile = nullptr; + m_status = FXCODEC_STATUS_ERR_MEMORY; + return m_status; + } + ret = pTiffModule->Decode(m_pTiffContext.get(), pDIBitmap); + if (!ret) { + m_pDeviceBitmap = nullptr; + m_pFile = nullptr; + m_status = FXCODEC_STATUS_ERROR; + return m_status; + } + RetainPtr<CFX_DIBitmap> pClipBitmap = + (m_clipBox.left == 0 && m_clipBox.top == 0 && + m_clipBox.right == m_SrcWidth && m_clipBox.bottom == m_SrcHeight) + ? pDIBitmap + : pDIBitmap->Clone(&m_clipBox); + if (!pClipBitmap) { + m_pDeviceBitmap = nullptr; + m_pFile = nullptr; + m_status = FXCODEC_STATUS_ERR_MEMORY; + return m_status; + } + RetainPtr<CFX_DIBitmap> pFormatBitmap; + switch (m_pDeviceBitmap->GetFormat()) { + case FXDIB_8bppRgb: + pFormatBitmap = pdfium::MakeRetain<CFX_DIBitmap>(); + pFormatBitmap->Create(pClipBitmap->GetWidth(), pClipBitmap->GetHeight(), + FXDIB_8bppRgb); + break; + case FXDIB_8bppMask: + pFormatBitmap = pdfium::MakeRetain<CFX_DIBitmap>(); + pFormatBitmap->Create(pClipBitmap->GetWidth(), pClipBitmap->GetHeight(), + FXDIB_8bppMask); + break; + case FXDIB_Rgb: + pFormatBitmap = pdfium::MakeRetain<CFX_DIBitmap>(); + pFormatBitmap->Create(pClipBitmap->GetWidth(), pClipBitmap->GetHeight(), + FXDIB_Rgb); + break; + case FXDIB_Rgb32: + pFormatBitmap = pdfium::MakeRetain<CFX_DIBitmap>(); + pFormatBitmap->Create(pClipBitmap->GetWidth(), pClipBitmap->GetHeight(), + FXDIB_Rgb32); + break; + case FXDIB_Argb: + pFormatBitmap = pClipBitmap; + break; + default: + break; + } + switch (m_pDeviceBitmap->GetFormat()) { + case FXDIB_8bppRgb: + case FXDIB_8bppMask: { + for (int32_t row = 0; row < pClipBitmap->GetHeight(); row++) { + const uint8_t* src_line = pClipBitmap->GetScanline(row); + uint8_t* dest_line = pFormatBitmap->GetWritableScanline(row); + for (int32_t col = 0; col < pClipBitmap->GetWidth(); col++) { + uint8_t _a = 255 - src_line[3]; + uint8_t b = (src_line[0] * src_line[3] + 0xFF * _a) / 255; + uint8_t g = (src_line[1] * src_line[3] + 0xFF * _a) / 255; + uint8_t r = (src_line[2] * src_line[3] + 0xFF * _a) / 255; + *dest_line++ = FXRGB2GRAY(r, g, b); + src_line += 4; + } + } + } break; + case FXDIB_Rgb: + case FXDIB_Rgb32: { + int32_t desBpp = (m_pDeviceBitmap->GetFormat() == FXDIB_Rgb) ? 3 : 4; + for (int32_t row = 0; row < pClipBitmap->GetHeight(); row++) { + const uint8_t* src_line = pClipBitmap->GetScanline(row); + uint8_t* dest_line = pFormatBitmap->GetWritableScanline(row); + for (int32_t col = 0; col < pClipBitmap->GetWidth(); col++) { + uint8_t _a = 255 - src_line[3]; + uint8_t b = (src_line[0] * src_line[3] + 0xFF * _a) / 255; + uint8_t g = (src_line[1] * src_line[3] + 0xFF * _a) / 255; + uint8_t r = (src_line[2] * src_line[3] + 0xFF * _a) / 255; + *dest_line++ = b; + *dest_line++ = g; + *dest_line++ = r; + dest_line += desBpp - 3; + src_line += 4; + } + } + } break; + default: + break; + } + if (!pFormatBitmap) { + m_pDeviceBitmap = nullptr; + m_pFile = nullptr; + m_status = FXCODEC_STATUS_ERR_MEMORY; + return m_status; + } + RetainPtr<CFX_DIBitmap> pStrechBitmap = + pFormatBitmap->StretchTo(m_sizeX, m_sizeY, FXDIB_INTERPOL, nullptr); + pFormatBitmap = nullptr; + if (!pStrechBitmap) { + m_pDeviceBitmap = nullptr; + m_pFile = nullptr; + m_status = FXCODEC_STATUS_ERR_MEMORY; + return m_status; + } + m_pDeviceBitmap->TransferBitmap(m_startX, m_startY, m_sizeX, m_sizeY, + pStrechBitmap, 0, 0); + m_pDeviceBitmap = nullptr; + m_pFile = nullptr; + m_status = FXCODEC_STATUS_DECODE_FINISH; + return m_status; +} +#endif // PDF_ENABLE_XFA_TIFF + +bool CCodec_ProgressiveDecoder::DetectImageType(FXCODEC_IMAGE_TYPE imageType, + CFX_DIBAttribute* pAttribute) { + m_offSet = 0; + uint32_t size = (uint32_t)m_pFile->GetSize(); + if (size > FXCODEC_BLOCK_SIZE) { + size = FXCODEC_BLOCK_SIZE; + } + FX_Free(m_pSrcBuf); + m_pSrcBuf = FX_Alloc(uint8_t, size); + memset(m_pSrcBuf, 0, size); + m_SrcSize = size; + switch (imageType) { + case FXCODEC_IMAGE_JPG: + return JpegDetectImageType(pAttribute, size); +#ifdef PDF_ENABLE_XFA_BMP + case FXCODEC_IMAGE_BMP: + return BmpDetectImageType(pAttribute, size); +#endif // PDF_ENABLE_XFA_BMP +#ifdef PDF_ENABLE_XFA_GIF + case FXCODEC_IMAGE_GIF: + return GifDetectImageType(pAttribute, size); +#endif // PDF_ENABLE_XFA_GIF +#ifdef PDF_ENABLE_XFA_PNG + case FXCODEC_IMAGE_PNG: + return PngDetectImageType(pAttribute, size); +#endif // PDF_ENABLE_XFA_PNG +#ifdef PDF_ENABLE_XFA_TIFF + case FXCODEC_IMAGE_TIFF: + return TiffDetectImageType(pAttribute, size); +#endif // PDF_ENABLE_XFA_TIFF + default: + m_status = FXCODEC_STATUS_ERR_FORMAT; + return false; + } +} + +FXCODEC_STATUS CCodec_ProgressiveDecoder::LoadImageInfo( + const RetainPtr<IFX_SeekableReadStream>& pFile, + FXCODEC_IMAGE_TYPE imageType, + CFX_DIBAttribute* pAttribute, + bool bSkipImageTypeCheck) { + switch (m_status) { + case FXCODEC_STATUS_FRAME_READY: + case FXCODEC_STATUS_FRAME_TOBECONTINUE: + case FXCODEC_STATUS_DECODE_READY: + case FXCODEC_STATUS_DECODE_TOBECONTINUE: + return FXCODEC_STATUS_ERROR; + default: + break; + } + if (!pFile) { + m_status = FXCODEC_STATUS_ERR_PARAMS; + m_pFile = nullptr; + return m_status; + } + m_pFile = pFile; + m_offSet = 0; + m_SrcWidth = m_SrcHeight = 0; + m_SrcComponents = m_SrcBPC = 0; + m_clipBox = FX_RECT(0, 0, 0, 0); + m_startX = m_startY = 0; + m_sizeX = m_sizeY = 0; + m_SrcPassNumber = 0; + if (imageType != FXCODEC_IMAGE_UNKNOWN && + DetectImageType(imageType, pAttribute)) { + m_imageType = imageType; + m_status = FXCODEC_STATUS_FRAME_READY; + return m_status; + } + // If we got here then the image data does not match the requested decoder. + // If we're skipping the type check then bail out at this point and return + // the failed status. + if (bSkipImageTypeCheck) + return m_status; + + for (int type = FXCODEC_IMAGE_UNKNOWN + 1; type < FXCODEC_IMAGE_MAX; type++) { + if (DetectImageType(static_cast<FXCODEC_IMAGE_TYPE>(type), pAttribute)) { + m_imageType = static_cast<FXCODEC_IMAGE_TYPE>(type); + m_status = FXCODEC_STATUS_FRAME_READY; + return m_status; + } + } + m_status = FXCODEC_STATUS_ERR_FORMAT; + m_pFile = nullptr; + return m_status; +} + +void CCodec_ProgressiveDecoder::SetClipBox(FX_RECT* clip) { + if (m_status != FXCODEC_STATUS_FRAME_READY) + return; + + if (clip->IsEmpty()) { + m_clipBox = FX_RECT(0, 0, 0, 0); + return; + } + clip->left = std::max(clip->left, 0); + clip->right = std::min(clip->right, m_SrcWidth); + clip->top = std::max(clip->top, 0); + clip->bottom = std::min(clip->bottom, m_SrcHeight); + if (clip->IsEmpty()) { + m_clipBox = FX_RECT(0, 0, 0, 0); + return; + } + m_clipBox = *clip; +} + +void CCodec_ProgressiveDecoder::GetDownScale(int& down_scale) { + down_scale = 1; + int ratio_w = m_clipBox.Width() / m_sizeX; + int ratio_h = m_clipBox.Height() / m_sizeY; + int ratio = (ratio_w > ratio_h) ? ratio_h : ratio_w; + if (ratio >= 8) { + down_scale = 8; + } else if (ratio >= 4) { + down_scale = 4; + } else if (ratio >= 2) { + down_scale = 2; + } + m_clipBox.left /= down_scale; + m_clipBox.right /= down_scale; + m_clipBox.top /= down_scale; + m_clipBox.bottom /= down_scale; + if (m_clipBox.right == m_clipBox.left) { + m_clipBox.right = m_clipBox.left + 1; + } + if (m_clipBox.bottom == m_clipBox.top) { + m_clipBox.bottom = m_clipBox.top + 1; + } +} + +void CCodec_ProgressiveDecoder::GetTransMethod(FXDIB_Format dest_format, + FXCodec_Format src_format) { + switch (dest_format) { + case FXDIB_1bppMask: + case FXDIB_1bppRgb: { + switch (src_format) { + case FXCodec_1bppGray: + m_TransMethod = 0; + break; + default: + m_TransMethod = -1; + } + } break; + case FXDIB_8bppMask: + case FXDIB_8bppRgb: { + switch (src_format) { + case FXCodec_1bppGray: + m_TransMethod = 1; + break; + case FXCodec_8bppGray: + m_TransMethod = 2; + break; + case FXCodec_1bppRgb: + case FXCodec_8bppRgb: + m_TransMethod = 3; + break; + case FXCodec_Rgb: + case FXCodec_Rgb32: + case FXCodec_Argb: + m_TransMethod = 4; + break; + case FXCodec_Cmyk: + m_TransMethod = 5; + break; + default: + m_TransMethod = -1; + } + } break; + case FXDIB_Rgb: { + switch (src_format) { + case FXCodec_1bppGray: + m_TransMethod = 6; + break; + case FXCodec_8bppGray: + m_TransMethod = 7; + break; + case FXCodec_1bppRgb: + case FXCodec_8bppRgb: + m_TransMethod = 8; + break; + case FXCodec_Rgb: + case FXCodec_Rgb32: + case FXCodec_Argb: + m_TransMethod = 9; + break; + case FXCodec_Cmyk: + m_TransMethod = 10; + break; + default: + m_TransMethod = -1; + } + } break; + case FXDIB_Rgb32: + case FXDIB_Argb: { + switch (src_format) { + case FXCodec_1bppGray: + m_TransMethod = 6; + break; + case FXCodec_8bppGray: + m_TransMethod = 7; + break; + case FXCodec_1bppRgb: + case FXCodec_8bppRgb: + if (dest_format == FXDIB_Argb) { + m_TransMethod = 12; + } else { + m_TransMethod = 8; + } + break; + case FXCodec_Rgb: + case FXCodec_Rgb32: + m_TransMethod = 9; + break; + case FXCodec_Cmyk: + m_TransMethod = 10; + break; + case FXCodec_Argb: + m_TransMethod = 11; + break; + default: + m_TransMethod = -1; + } + } break; + default: + m_TransMethod = -1; + } +} + +void CCodec_ProgressiveDecoder::ReSampleScanline( + const RetainPtr<CFX_DIBitmap>& pDeviceBitmap, + int dest_line, + uint8_t* src_scan, + FXCodec_Format src_format) { + int src_left = m_clipBox.left; + int dest_left = m_startX; + uint8_t* dest_scan = + pDeviceBitmap->GetBuffer() + dest_line * pDeviceBitmap->GetPitch(); + int src_bytes_per_pixel = (src_format & 0xff) / 8; + int dest_bytes_per_pixel = pDeviceBitmap->GetBPP() / 8; + src_scan += src_left * src_bytes_per_pixel; + dest_scan += dest_left * dest_bytes_per_pixel; + for (int dest_col = 0; dest_col < m_sizeX; dest_col++) { + PixelWeight* pPixelWeights = m_WeightHorz.GetPixelWeight(dest_col); + switch (m_TransMethod) { + case -1: + return; + case 0: + return; + case 1: + return; + case 2: { + uint32_t dest_g = 0; + for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; + j++) { + int pixel_weight = + pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; + dest_g += pixel_weight * src_scan[j]; + } + *dest_scan++ = (uint8_t)(dest_g >> 16); + } break; + case 3: { + int dest_r = 0; + int dest_g = 0; + int dest_b = 0; + for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; + j++) { + int pixel_weight = + pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; + unsigned long argb = m_pSrcPalette[src_scan[j]]; + dest_r += pixel_weight * (uint8_t)(argb >> 16); + dest_g += pixel_weight * (uint8_t)(argb >> 8); + dest_b += pixel_weight * (uint8_t)argb; + } + *dest_scan++ = + (uint8_t)FXRGB2GRAY((dest_r >> 16), (dest_g >> 16), (dest_b >> 16)); + } break; + case 4: { + uint32_t dest_b = 0; + uint32_t dest_g = 0; + uint32_t dest_r = 0; + for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; + j++) { + int pixel_weight = + pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; + const uint8_t* src_pixel = src_scan + j * src_bytes_per_pixel; + dest_b += pixel_weight * (*src_pixel++); + dest_g += pixel_weight * (*src_pixel++); + dest_r += pixel_weight * (*src_pixel); + } + *dest_scan++ = + (uint8_t)FXRGB2GRAY((dest_r >> 16), (dest_g >> 16), (dest_b >> 16)); + } break; + case 5: { + uint32_t dest_b = 0; + uint32_t dest_g = 0; + uint32_t dest_r = 0; + for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; + j++) { + int pixel_weight = + pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; + const uint8_t* src_pixel = src_scan + j * src_bytes_per_pixel; + uint8_t src_b = 0; + uint8_t src_g = 0; + uint8_t src_r = 0; + std::tie(src_r, src_g, src_b) = + AdobeCMYK_to_sRGB1(255 - src_pixel[0], 255 - src_pixel[1], + 255 - src_pixel[2], 255 - src_pixel[3]); + dest_b += pixel_weight * src_b; + dest_g += pixel_weight * src_g; + dest_r += pixel_weight * src_r; + } + *dest_scan++ = + (uint8_t)FXRGB2GRAY((dest_r >> 16), (dest_g >> 16), (dest_b >> 16)); + } break; + case 6: + return; + case 7: { + uint32_t dest_g = 0; + for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; + j++) { + int pixel_weight = + pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; + dest_g += pixel_weight * src_scan[j]; + } + memset(dest_scan, (uint8_t)(dest_g >> 16), 3); + dest_scan += dest_bytes_per_pixel; + } break; + case 8: { + int dest_r = 0; + int dest_g = 0; + int dest_b = 0; + for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; + j++) { + int pixel_weight = + pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; + unsigned long argb = m_pSrcPalette[src_scan[j]]; + dest_r += pixel_weight * (uint8_t)(argb >> 16); + dest_g += pixel_weight * (uint8_t)(argb >> 8); + dest_b += pixel_weight * (uint8_t)argb; + } + *dest_scan++ = (uint8_t)((dest_b) >> 16); + *dest_scan++ = (uint8_t)((dest_g) >> 16); + *dest_scan++ = (uint8_t)((dest_r) >> 16); + dest_scan += dest_bytes_per_pixel - 3; + } break; + case 12: { +#ifdef PDF_ENABLE_XFA_BMP + if (m_pBmpContext) { + int dest_r = 0; + int dest_g = 0; + int dest_b = 0; + for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; + j++) { + int pixel_weight = + pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; + unsigned long argb = m_pSrcPalette[src_scan[j]]; + dest_r += pixel_weight * (uint8_t)(argb >> 16); + dest_g += pixel_weight * (uint8_t)(argb >> 8); + dest_b += pixel_weight * (uint8_t)argb; + } + *dest_scan++ = (uint8_t)((dest_b) >> 16); + *dest_scan++ = (uint8_t)((dest_g) >> 16); + *dest_scan++ = (uint8_t)((dest_r) >> 16); + *dest_scan++ = 0xFF; + break; + } +#endif // PDF_ENABLE_XFA_BMP + int dest_a = 0; + int dest_r = 0; + int dest_g = 0; + int dest_b = 0; + for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; + j++) { + int pixel_weight = + pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; + unsigned long argb = m_pSrcPalette[src_scan[j]]; + dest_a += pixel_weight * (uint8_t)(argb >> 24); + dest_r += pixel_weight * (uint8_t)(argb >> 16); + dest_g += pixel_weight * (uint8_t)(argb >> 8); + dest_b += pixel_weight * (uint8_t)argb; + } + *dest_scan++ = (uint8_t)((dest_b) >> 16); + *dest_scan++ = (uint8_t)((dest_g) >> 16); + *dest_scan++ = (uint8_t)((dest_r) >> 16); + *dest_scan++ = (uint8_t)((dest_a) >> 16); + } break; + case 9: { + uint32_t dest_b = 0; + uint32_t dest_g = 0; + uint32_t dest_r = 0; + for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; + j++) { + int pixel_weight = + pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; + const uint8_t* src_pixel = src_scan + j * src_bytes_per_pixel; + dest_b += pixel_weight * (*src_pixel++); + dest_g += pixel_weight * (*src_pixel++); + dest_r += pixel_weight * (*src_pixel); + } + *dest_scan++ = (uint8_t)((dest_b) >> 16); + *dest_scan++ = (uint8_t)((dest_g) >> 16); + *dest_scan++ = (uint8_t)((dest_r) >> 16); + dest_scan += dest_bytes_per_pixel - 3; + } break; + case 10: { + uint32_t dest_b = 0; + uint32_t dest_g = 0; + uint32_t dest_r = 0; + for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; + j++) { + int pixel_weight = + pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; + const uint8_t* src_pixel = src_scan + j * src_bytes_per_pixel; + uint8_t src_b = 0; + uint8_t src_g = 0; + uint8_t src_r = 0; + std::tie(src_r, src_g, src_b) = + AdobeCMYK_to_sRGB1(255 - src_pixel[0], 255 - src_pixel[1], + 255 - src_pixel[2], 255 - src_pixel[3]); + dest_b += pixel_weight * src_b; + dest_g += pixel_weight * src_g; + dest_r += pixel_weight * src_r; + } + *dest_scan++ = (uint8_t)((dest_b) >> 16); + *dest_scan++ = (uint8_t)((dest_g) >> 16); + *dest_scan++ = (uint8_t)((dest_r) >> 16); + dest_scan += dest_bytes_per_pixel - 3; + } break; + case 11: { + uint32_t dest_alpha = 0; + uint32_t dest_r = 0; + uint32_t dest_g = 0; + uint32_t dest_b = 0; + for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; + j++) { + int pixel_weight = + pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; + const uint8_t* src_pixel = src_scan + j * src_bytes_per_pixel; + pixel_weight = pixel_weight * src_pixel[3] / 255; + dest_b += pixel_weight * (*src_pixel++); + dest_g += pixel_weight * (*src_pixel++); + dest_r += pixel_weight * (*src_pixel); + dest_alpha += pixel_weight; + } + *dest_scan++ = (uint8_t)((dest_b) >> 16); + *dest_scan++ = (uint8_t)((dest_g) >> 16); + *dest_scan++ = (uint8_t)((dest_r) >> 16); + *dest_scan++ = (uint8_t)((dest_alpha * 255) >> 16); + } break; + default: + return; + } + } +} + +void CCodec_ProgressiveDecoder::ResampleVert( + const RetainPtr<CFX_DIBitmap>& pDeviceBitmap, + double scale_y, + int dest_row) { + int dest_Bpp = pDeviceBitmap->GetBPP() >> 3; + uint32_t dest_ScanOffet = m_startX * dest_Bpp; + int dest_top = m_startY; + pdfium::base::CheckedNumeric<int> check_dest_row_1 = dest_row; + check_dest_row_1 -= pdfium::base::checked_cast<int>(scale_y); + int dest_row_1 = check_dest_row_1.ValueOrDie(); + if (dest_row_1 < dest_top) { + int dest_bottom = dest_top + m_sizeY; + if (dest_row + (int)scale_y >= dest_bottom - 1) { + const uint8_t* scan_src = + pDeviceBitmap->GetScanline(dest_row) + dest_ScanOffet; + while (++dest_row < dest_bottom) { + uint8_t* scan_des = + pDeviceBitmap->GetWritableScanline(dest_row) + dest_ScanOffet; + uint32_t size = m_sizeX * dest_Bpp; + memmove(scan_des, scan_src, size); + } + } + return; + } + for (; dest_row_1 < dest_row; dest_row_1++) { + uint8_t* scan_des = + pDeviceBitmap->GetWritableScanline(dest_row_1) + dest_ScanOffet; + PixelWeight* pWeight = m_WeightVert.GetPixelWeight(dest_row_1 - dest_top); + const uint8_t* scan_src1 = + pDeviceBitmap->GetScanline(pWeight->m_SrcStart + dest_top) + + dest_ScanOffet; + const uint8_t* scan_src2 = + pDeviceBitmap->GetScanline(pWeight->m_SrcEnd + dest_top) + + dest_ScanOffet; + for (int dest_col = 0; dest_col < m_sizeX; dest_col++) { + switch (pDeviceBitmap->GetFormat()) { + case FXDIB_Invalid: + case FXDIB_1bppMask: + case FXDIB_1bppRgb: + return; + case FXDIB_8bppMask: + case FXDIB_8bppRgb: { + if (pDeviceBitmap->GetPalette()) { + return; + } + int dest_g = 0; + dest_g += pWeight->m_Weights[0] * (*scan_src1++); + dest_g += pWeight->m_Weights[1] * (*scan_src2++); + *scan_des++ = (uint8_t)(dest_g >> 16); + } break; + case FXDIB_Rgb: + case FXDIB_Rgb32: { + uint32_t dest_b = 0; + uint32_t dest_g = 0; + uint32_t dest_r = 0; + dest_b += pWeight->m_Weights[0] * (*scan_src1++); + dest_g += pWeight->m_Weights[0] * (*scan_src1++); + dest_r += pWeight->m_Weights[0] * (*scan_src1++); + scan_src1 += dest_Bpp - 3; + dest_b += pWeight->m_Weights[1] * (*scan_src2++); + dest_g += pWeight->m_Weights[1] * (*scan_src2++); + dest_r += pWeight->m_Weights[1] * (*scan_src2++); + scan_src2 += dest_Bpp - 3; + *scan_des++ = (uint8_t)((dest_b) >> 16); + *scan_des++ = (uint8_t)((dest_g) >> 16); + *scan_des++ = (uint8_t)((dest_r) >> 16); + scan_des += dest_Bpp - 3; + } break; + case FXDIB_Argb: { + uint32_t dest_a = 0; + uint32_t dest_b = 0; + uint32_t dest_g = 0; + uint32_t dest_r = 0; + dest_b += pWeight->m_Weights[0] * (*scan_src1++); + dest_g += pWeight->m_Weights[0] * (*scan_src1++); + dest_r += pWeight->m_Weights[0] * (*scan_src1++); + dest_a += pWeight->m_Weights[0] * (*scan_src1++); + dest_b += pWeight->m_Weights[1] * (*scan_src2++); + dest_g += pWeight->m_Weights[1] * (*scan_src2++); + dest_r += pWeight->m_Weights[1] * (*scan_src2++); + dest_a += pWeight->m_Weights[1] * (*scan_src2++); + *scan_des++ = (uint8_t)((dest_b) >> 16); + *scan_des++ = (uint8_t)((dest_g) >> 16); + *scan_des++ = (uint8_t)((dest_r) >> 16); + *scan_des++ = (uint8_t)((dest_a) >> 16); + } break; + default: + return; + } + } + } + int dest_bottom = dest_top + m_sizeY; + if (dest_row + (int)scale_y >= dest_bottom - 1) { + const uint8_t* scan_src = + pDeviceBitmap->GetScanline(dest_row) + dest_ScanOffet; + while (++dest_row < dest_bottom) { + uint8_t* scan_des = + pDeviceBitmap->GetWritableScanline(dest_row) + dest_ScanOffet; + uint32_t size = m_sizeX * dest_Bpp; + memmove(scan_des, scan_src, size); + } + } +} + +void CCodec_ProgressiveDecoder::Resample( + const RetainPtr<CFX_DIBitmap>& pDeviceBitmap, + int32_t src_line, + uint8_t* src_scan, + FXCodec_Format src_format) { + int src_top = m_clipBox.top; + int dest_top = m_startY; + int src_height = m_clipBox.Height(); + int dest_height = m_sizeY; + if (src_line >= src_top) { + double scale_y = static_cast<double>(dest_height) / src_height; + int src_row = src_line - src_top; + int dest_row = (int)(src_row * scale_y) + dest_top; + if (dest_row >= dest_top + dest_height) { + return; + } + ReSampleScanline(pDeviceBitmap, dest_row, m_pDecodeBuf, src_format); + if (scale_y > 1.0) { + ResampleVert(pDeviceBitmap, scale_y, dest_row); + } + } +} + +std::pair<FXCODEC_STATUS, size_t> CCodec_ProgressiveDecoder::GetFrames() { + if (!(m_status == FXCODEC_STATUS_FRAME_READY || + m_status == FXCODEC_STATUS_FRAME_TOBECONTINUE)) { + return {FXCODEC_STATUS_ERROR, 0}; + } + + switch (m_imageType) { +#ifdef PDF_ENABLE_XFA_BMP + case FXCODEC_IMAGE_BMP: +#endif // PDF_ENABLE_XFA_BMP + case FXCODEC_IMAGE_JPG: +#ifdef PDF_ENABLE_XFA_PNG + case FXCODEC_IMAGE_PNG: +#endif // PDF_ENABLE_XFA_PNG +#ifdef PDF_ENABLE_XFA_TIFF + case FXCODEC_IMAGE_TIFF: +#endif // PDF_ENABLE_XFA_TIFF + m_FrameNumber = 1; + m_status = FXCODEC_STATUS_DECODE_READY; + return {m_status, 1}; +#ifdef PDF_ENABLE_XFA_GIF + case FXCODEC_IMAGE_GIF: { + CCodec_GifModule* pGifModule = m_pCodecMgr->GetGifModule(); + if (!pGifModule) { + m_status = FXCODEC_STATUS_ERR_MEMORY; + return {m_status, 0}; + } + while (true) { + CFX_GifDecodeStatus readResult; + std::tie(readResult, m_FrameNumber) = + pGifModule->LoadFrameInfo(m_pGifContext.get()); + while (readResult == CFX_GifDecodeStatus::Unfinished) { + FXCODEC_STATUS error_status = FXCODEC_STATUS_ERR_READ; + if (!GifReadMoreData(pGifModule, error_status)) + return {error_status, 0}; + + std::tie(readResult, m_FrameNumber) = + pGifModule->LoadFrameInfo(m_pGifContext.get()); + } + if (readResult == CFX_GifDecodeStatus::Success) { + m_status = FXCODEC_STATUS_DECODE_READY; + return {m_status, m_FrameNumber}; + } + m_pGifContext = nullptr; + m_status = FXCODEC_STATUS_ERROR; + return {m_status, 0}; + } + } +#endif // PDF_ENABLE_XFA_GIF + default: + return {FXCODEC_STATUS_ERROR, 0}; + } +} + +FXCODEC_STATUS CCodec_ProgressiveDecoder::StartDecode( + const RetainPtr<CFX_DIBitmap>& pDIBitmap, + int start_x, + int start_y, + int size_x, + int size_y) { + if (m_status != FXCODEC_STATUS_DECODE_READY) + return FXCODEC_STATUS_ERROR; + + if (!pDIBitmap || pDIBitmap->GetBPP() < 8 || m_FrameNumber == 0) + return FXCODEC_STATUS_ERR_PARAMS; + + m_pDeviceBitmap = pDIBitmap; + if (m_clipBox.IsEmpty()) + return FXCODEC_STATUS_ERR_PARAMS; + if (size_x <= 0 || size_x > 65535 || size_y <= 0 || size_y > 65535) + return FXCODEC_STATUS_ERR_PARAMS; + + FX_RECT device_rc = + FX_RECT(start_x, start_y, start_x + size_x, start_y + size_y); + int32_t out_range_x = device_rc.right - pDIBitmap->GetWidth(); + int32_t out_range_y = device_rc.bottom - pDIBitmap->GetHeight(); + device_rc.Intersect( + FX_RECT(0, 0, pDIBitmap->GetWidth(), pDIBitmap->GetHeight())); + if (device_rc.IsEmpty()) + return FXCODEC_STATUS_ERR_PARAMS; + + m_startX = device_rc.left; + m_startY = device_rc.top; + m_sizeX = device_rc.Width(); + m_sizeY = device_rc.Height(); + m_FrameCur = 0; + if (start_x < 0 || out_range_x > 0) { + float scaleX = (float)m_clipBox.Width() / (float)size_x; + if (start_x < 0) { + m_clipBox.left -= (int32_t)ceil((float)start_x * scaleX); + } + if (out_range_x > 0) { + m_clipBox.right -= (int32_t)floor((float)out_range_x * scaleX); + } + } + if (start_y < 0 || out_range_y > 0) { + float scaleY = (float)m_clipBox.Height() / (float)size_y; + if (start_y < 0) { + m_clipBox.top -= (int32_t)ceil((float)start_y * scaleY); + } + if (out_range_y > 0) { + m_clipBox.bottom -= (int32_t)floor((float)out_range_y * scaleY); + } + } + if (m_clipBox.IsEmpty()) { + return FXCODEC_STATUS_ERR_PARAMS; + } + switch (m_imageType) { +#ifdef PDF_ENABLE_XFA_BMP + case FXCODEC_IMAGE_BMP: + return BmpStartDecode(pDIBitmap); +#endif // PDF_ENABLE_XFA_BMP +#ifdef PDF_ENABLE_XFA_GIF + case FXCODEC_IMAGE_GIF: + return GifStartDecode(pDIBitmap); +#endif // PDF_ENABLE_XFA_GIF + case FXCODEC_IMAGE_JPG: + return JpegStartDecode(pDIBitmap); +#ifdef PDF_ENABLE_XFA_PNG + case FXCODEC_IMAGE_PNG: + return PngStartDecode(pDIBitmap); +#endif // PDF_ENABLE_XFA_PNG +#ifdef PDF_ENABLE_XFA_TIFF + case FXCODEC_IMAGE_TIFF: + m_status = FXCODEC_STATUS_DECODE_TOBECONTINUE; + return m_status; +#endif // PDF_ENABLE_XFA_TIFF + default: + return FXCODEC_STATUS_ERROR; + } +} + +FXCODEC_STATUS CCodec_ProgressiveDecoder::ContinueDecode() { + if (m_status != FXCODEC_STATUS_DECODE_TOBECONTINUE) + return FXCODEC_STATUS_ERROR; + + switch (m_imageType) { + case FXCODEC_IMAGE_JPG: + return JpegContinueDecode(); +#ifdef PDF_ENABLE_XFA_BMP + case FXCODEC_IMAGE_BMP: + return BmpContinueDecode(); +#endif // PDF_ENABLE_XFA_BMP +#ifdef PDF_ENABLE_XFA_GIF + case FXCODEC_IMAGE_GIF: + return GifContinueDecode(); +#endif // PDF_ENABLE_XFA_GIF +#ifdef PDF_ENABLE_XFA_PNG + case FXCODEC_IMAGE_PNG: + return PngContinueDecode(); +#endif // PDF_ENABLE_XFA_PNG +#ifdef PDF_ENABLE_XFA_TIFF + case FXCODEC_IMAGE_TIFF: + return TiffContinueDecode(); +#endif // PDF_ENABLE_XFA_TIFF + default: + return FXCODEC_STATUS_ERROR; + } +} + +std::unique_ptr<CCodec_ProgressiveDecoder> +CCodec_ModuleMgr::CreateProgressiveDecoder() { + return pdfium::MakeUnique<CCodec_ProgressiveDecoder>(this); +} |