// 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/fx_codec_progress.h" #include "core/include/fxcodec/fx_codec.h" #include "core/include/fxge/fx_dib.h" void CFXCODEC_WeightTable::Calc(int dest_len, int dest_min, int dest_max, int src_len, int src_min, int src_max, FX_BOOL bInterpol) { if (m_pWeightTables) { FX_Free(m_pWeightTables); } double scale, base; scale = (FX_FLOAT)src_len / (FX_FLOAT)dest_len; if (dest_len < 0) { base = (FX_FLOAT)(src_len); } else { base = 0.0f; } m_ItemSize = (int)(sizeof(int) * 2 + sizeof(int) * (FXSYS_ceil(FXSYS_fabs((FX_FLOAT)scale)) + 1)); m_DestMin = dest_min; m_pWeightTables = FX_Alloc(uint8_t, (dest_max - dest_min) * m_ItemSize + 4); if (m_pWeightTables == NULL) { return; } if (FXSYS_fabs((FX_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; if (bInterpol) { pixel_weights.m_SrcStart = (int)FXSYS_floor((FX_FLOAT)src_pos - 1.0f / 2); pixel_weights.m_SrcEnd = (int)FXSYS_floor((FX_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( (FX_FLOAT)(src_pos - pixel_weights.m_SrcStart - 1.0f / 2) * 65536); pixel_weights.m_Weights[0] = 65536 - pixel_weights.m_Weights[1]; } } else { pixel_weights.m_SrcStart = pixel_weights.m_SrcEnd = (int)FXSYS_floor((FX_FLOAT)src_pos); pixel_weights.m_Weights[0] = 65536; } } 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)FXSYS_floor((FX_FLOAT)src_start); end_i = (int)FXSYS_ceil((FX_FLOAT)src_end); } else { start_i = (int)FXSYS_floor((FX_FLOAT)src_end); end_i = (int)FXSYS_ceil((FX_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 = ((FX_FLOAT)j - base) / scale; double dest_end = ((FX_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 > (FX_FLOAT)(dest_pixel) ? dest_start : (FX_FLOAT)(dest_pixel); double area_end = dest_end > (FX_FLOAT)(dest_pixel + 1) ? (FX_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((FX_FLOAT)(weight * 65536)); } } } void CFXCODEC_HorzTable::Calc(int dest_len, int src_len, FX_BOOL bInterpol) { if (m_pWeightTables) { FX_Free(m_pWeightTables); } double scale = (double)dest_len / (double)src_len; m_ItemSize = sizeof(int) * 4; int size = dest_len * m_ItemSize + 4; m_pWeightTables = FX_Alloc(uint8_t, size); if (m_pWeightTables == NULL) { return; } FXSYS_memset(m_pWeightTables, 0, size); if (scale > 1) { int pre_des_col = 0; for (int src_col = 0; src_col < src_len; src_col++) { double des_col_f = src_col * scale; int des_col = FXSYS_round((FX_FLOAT)des_col_f); PixelWeight* pWeight = (PixelWeight*)(m_pWeightTables + des_col * m_ItemSize); pWeight->m_SrcStart = pWeight->m_SrcEnd = src_col; pWeight->m_Weights[0] = 65536; pWeight->m_Weights[1] = 0; if (src_col == src_len - 1 && des_col < dest_len - 1) { for (int des_col_index = pre_des_col + 1; des_col_index < dest_len; des_col_index++) { pWeight = (PixelWeight*)(m_pWeightTables + des_col_index * m_ItemSize); pWeight->m_SrcStart = pWeight->m_SrcEnd = src_col; pWeight->m_Weights[0] = 65536; pWeight->m_Weights[1] = 0; } return; } int des_col_len = des_col - pre_des_col; for (int des_col_index = pre_des_col + 1; des_col_index < des_col; des_col_index++) { pWeight = (PixelWeight*)(m_pWeightTables + des_col_index * m_ItemSize); pWeight->m_SrcStart = src_col - 1; pWeight->m_SrcEnd = src_col; pWeight->m_Weights[0] = bInterpol ? FXSYS_round((FX_FLOAT)( ((FX_FLOAT)des_col - (FX_FLOAT)des_col_index) / (FX_FLOAT)des_col_len * 65536)) : 65536; pWeight->m_Weights[1] = 65536 - pWeight->m_Weights[0]; } pre_des_col = des_col; } return; } for (int des_col = 0; des_col < dest_len; des_col++) { double src_col_f = des_col / scale; int src_col = FXSYS_round((FX_FLOAT)src_col_f); PixelWeight* pWeight = (PixelWeight*)(m_pWeightTables + des_col * m_ItemSize); pWeight->m_SrcStart = pWeight->m_SrcEnd = src_col; pWeight->m_Weights[0] = 65536; pWeight->m_Weights[1] = 0; } } void CFXCODEC_VertTable::Calc(int dest_len, int src_len) { if (m_pWeightTables) { FX_Free(m_pWeightTables); } double scale = (double)dest_len / (double)src_len; m_ItemSize = sizeof(int) * 4; int size = dest_len * m_ItemSize + 4; m_pWeightTables = FX_Alloc(uint8_t, size); if (m_pWeightTables == NULL) { return; } FXSYS_memset(m_pWeightTables, 0, size); if (scale > 1) { 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 des_row = start_step; des_row < end_step; des_row++) { PixelWeight* pWeight = (PixelWeight*)(m_pWeightTables + des_row * m_ItemSize); 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 = (PixelWeight*)(m_pWeightTables + start_step * m_ItemSize); pWeight->m_SrcStart = start_step; pWeight->m_SrcEnd = start_step; pWeight->m_Weights[0] = 65536; pWeight->m_Weights[1] = 0; } for (int des_row = start_step + 1; des_row < end_step; des_row++) { PixelWeight* pWeight = (PixelWeight*)(m_pWeightTables + des_row * m_ItemSize); pWeight->m_SrcStart = start_step; pWeight->m_SrcEnd = end_step; pWeight->m_Weights[0] = FXSYS_round((FX_FLOAT)(end_step - des_row) / (FX_FLOAT)length * 65536); pWeight->m_Weights[1] = 65536 - pWeight->m_Weights[0]; } } } else { for (int des_row = 0; des_row < dest_len; des_row++) { PixelWeight* pWeight = (PixelWeight*)(m_pWeightTables + des_row * m_ItemSize); pWeight->m_SrcStart = des_row; pWeight->m_SrcEnd = des_row; pWeight->m_Weights[0] = 65536; pWeight->m_Weights[1] = 0; } } } CCodec_ProgressiveDecoder::CCodec_ProgressiveDecoder( CCodec_ModuleMgr* pCodecMgr) { m_pFile = NULL; m_pJpegContext = NULL; m_pPngContext = NULL; m_pGifContext = NULL; m_pBmpContext = NULL; m_pTiffContext = NULL; m_pCodecMgr = NULL; m_pSrcBuf = NULL; m_pDecodeBuf = NULL; m_pDeviceBitmap = NULL; m_pSrcPalette = NULL; m_pCodecMgr = pCodecMgr; m_offSet = 0; m_SrcSize = 0; m_ScanlineSize = 0; m_SrcWidth = m_SrcHeight = 0; m_SrcComponents = 0; m_SrcBPC = 0; m_SrcPassNumber = 0; m_clipBox = FX_RECT(0, 0, 0, 0); m_imagType = FXCODEC_IMAGE_UNKNOWN; m_status = FXCODEC_STATUS_DECODE_FINISH; m_TransMethod = -1; m_SrcRow = 0; m_SrcFormat = FXCodec_Invalid; m_bInterpol = TRUE; m_FrameNumber = 0; m_FrameCur = 0; m_SrcPaletteNumber = 0; m_GifPltNumber = 0; m_GifBgIndex = 0; m_pGifPalette = NULL; m_GifTransIndex = -1; m_GifFrameRect = FX_RECT(0, 0, 0, 0); m_BmpIsTopBottom = FALSE; } CCodec_ProgressiveDecoder::~CCodec_ProgressiveDecoder() { m_pFile = NULL; if (m_pJpegContext) { m_pCodecMgr->GetJpegModule()->Finish(m_pJpegContext); } if (m_pPngContext) { m_pCodecMgr->GetPngModule()->Finish(m_pPngContext); } if (m_pGifContext) { m_pCodecMgr->GetGifModule()->Finish(m_pGifContext); } if (m_pBmpContext) { m_pCodecMgr->GetBmpModule()->Finish(m_pBmpContext); } if (m_pTiffContext) { m_pCodecMgr->GetTiffModule()->DestroyDecoder(m_pTiffContext); } FX_Free(m_pSrcBuf); FX_Free(m_pDecodeBuf); FX_Free(m_pSrcPalette); } FX_BOOL CCodec_ProgressiveDecoder::JpegReadMoreData( ICodec_JpegModule* pJpegModule, FXCODEC_STATUS& err_status) { FX_DWORD dwSize = (FX_DWORD)m_pFile->GetSize(); if (dwSize <= m_offSet) { return FALSE; } dwSize = dwSize - m_offSet; FX_DWORD dwAvail = pJpegModule->GetAvailInput(m_pJpegContext, NULL); 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_Realloc(uint8_t, m_pSrcBuf, m_SrcSize); if (!m_pSrcBuf) { err_status = FXCODEC_STATUS_ERR_MEMORY; return FALSE; } } else { FX_DWORD dwConsume = m_SrcSize - dwAvail; if (dwAvail) { FXSYS_memcpy(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, m_pSrcBuf, dwSize + dwAvail); return TRUE; } FX_BOOL CCodec_ProgressiveDecoder::PngReadHeaderFunc(void* pModule, int width, int height, int bpc, int pass, int* color_type, double* gamma) { CCodec_ProgressiveDecoder* pCodec = (CCodec_ProgressiveDecoder*)pModule; if (pCodec->m_pDeviceBitmap == NULL) { pCodec->m_SrcWidth = width; pCodec->m_SrcHeight = height; pCodec->m_SrcBPC = bpc; pCodec->m_SrcPassNumber = pass; pCodec->m_SrcComponents = *color_type == 0 ? 1 : *color_type == 2 ? 3 : *color_type == 3 ? 4 : *color_type == 4 ? 2 : *color_type == 6 ? 4 : 0; pCodec->m_clipBox = FX_RECT(0, 0, width, height); return FALSE; } FXDIB_Format format = pCodec->m_pDeviceBitmap->GetFormat(); switch (format) { case FXDIB_1bppMask: case FXDIB_1bppRgb: ASSERT(FALSE); 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: ASSERT(FALSE); return FALSE; } *gamma = FXCODEC_PNG_GAMMA; return TRUE; } FX_BOOL CCodec_ProgressiveDecoder::PngAskScanlineBufFunc(void* pModule, int line, uint8_t*& src_buf) { CCodec_ProgressiveDecoder* pCodec = (CCodec_ProgressiveDecoder*)pModule; CFX_DIBitmap* pDIBitmap = pCodec->m_pDeviceBitmap; if (!pDIBitmap) { ASSERT(false); return FALSE; } if (line >= pCodec->m_clipBox.top && line < pCodec->m_clipBox.bottom) { double scale_y = (double)pCodec->m_sizeY / (double)pCodec->m_clipBox.Height(); int32_t row = (int32_t)((line - pCodec->m_clipBox.top) * scale_y) + pCodec->m_startY; uint8_t* src_scan = (uint8_t*)pDIBitmap->GetScanline(row); uint8_t* des_scan = pCodec->m_pDecodeBuf; src_buf = pCodec->m_pDecodeBuf; int32_t src_Bpp = pDIBitmap->GetBPP() >> 3; int32_t des_Bpp = (pCodec->m_SrcFormat & 0xff) >> 3; int32_t src_left = pCodec->m_startX; int32_t des_left = pCodec->m_clipBox.left; src_scan += src_left * src_Bpp; des_scan += des_left * des_Bpp; for (int32_t src_col = 0; src_col < pCodec->m_sizeX; src_col++) { PixelWeight* pPixelWeights = pCodec->m_WeightHorzOO.GetPixelWeight(src_col); if (pPixelWeights->m_SrcStart != pPixelWeights->m_SrcEnd) { continue; } switch (pDIBitmap->GetFormat()) { case FXDIB_1bppMask: case FXDIB_1bppRgb: ASSERT(FALSE); return FALSE; case FXDIB_8bppMask: case FXDIB_8bppRgb: { if (pDIBitmap->GetPalette()) { return FALSE; } FX_DWORD des_g = 0; des_g += pPixelWeights->m_Weights[0] * src_scan[src_col]; des_scan[pPixelWeights->m_SrcStart] = (uint8_t)(des_g >> 16); } break; case FXDIB_Rgb: case FXDIB_Rgb32: { FX_DWORD des_b = 0, des_g = 0, des_r = 0; const uint8_t* p = src_scan + src_col * src_Bpp; des_b += pPixelWeights->m_Weights[0] * (*p++); des_g += pPixelWeights->m_Weights[0] * (*p++); des_r += pPixelWeights->m_Weights[0] * (*p); uint8_t* pDes = &des_scan[pPixelWeights->m_SrcStart * des_Bpp]; *pDes++ = (uint8_t)((des_b) >> 16); *pDes++ = (uint8_t)((des_g) >> 16); *pDes = (uint8_t)((des_r) >> 16); } break; case FXDIB_Argb: { FX_DWORD des_r = 0, des_g = 0, des_b = 0; const uint8_t* p = src_scan + src_col * src_Bpp; des_b += pPixelWeights->m_Weights[0] * (*p++); des_g += pPixelWeights->m_Weights[0] * (*p++); des_r += pPixelWeights->m_Weights[0] * (*p++); uint8_t* pDes = &des_scan[pPixelWeights->m_SrcStart * des_Bpp]; *pDes++ = (uint8_t)((des_b) >> 16); *pDes++ = (uint8_t)((des_g) >> 16); *pDes++ = (uint8_t)((des_r) >> 16); *pDes = *p; } break; default: return FALSE; } } } return TRUE; } void CCodec_ProgressiveDecoder::PngOneOneMapResampleHorz( CFX_DIBitmap* pDeviceBitmap, int32_t des_line, uint8_t* src_scan, FXCodec_Format src_format) { uint8_t* des_scan = (uint8_t*)pDeviceBitmap->GetScanline(des_line); int32_t src_Bpp = (m_SrcFormat & 0xff) >> 3; int32_t des_Bpp = pDeviceBitmap->GetBPP() >> 3; int32_t src_left = m_clipBox.left; int32_t des_left = m_startX; src_scan += src_left * src_Bpp; des_scan += des_left * des_Bpp; for (int32_t des_col = 0; des_col < m_sizeX; des_col++) { PixelWeight* pPixelWeights = m_WeightHorzOO.GetPixelWeight(des_col); switch (pDeviceBitmap->GetFormat()) { case FXDIB_1bppMask: case FXDIB_1bppRgb: ASSERT(FALSE); return; case FXDIB_8bppMask: case FXDIB_8bppRgb: { if (pDeviceBitmap->GetPalette()) { return; } FX_DWORD des_g = 0; des_g += pPixelWeights->m_Weights[0] * src_scan[pPixelWeights->m_SrcStart]; des_g += pPixelWeights->m_Weights[1] * src_scan[pPixelWeights->m_SrcEnd]; *des_scan++ = (uint8_t)(des_g >> 16); } break; case FXDIB_Rgb: case FXDIB_Rgb32: { FX_DWORD des_b = 0, des_g = 0, des_r = 0; const uint8_t* p = src_scan; p = src_scan + pPixelWeights->m_SrcStart * src_Bpp; des_b += pPixelWeights->m_Weights[0] * (*p++); des_g += pPixelWeights->m_Weights[0] * (*p++); des_r += pPixelWeights->m_Weights[0] * (*p); p = src_scan + pPixelWeights->m_SrcEnd * src_Bpp; des_b += pPixelWeights->m_Weights[1] * (*p++); des_g += pPixelWeights->m_Weights[1] * (*p++); des_r += pPixelWeights->m_Weights[1] * (*p); *des_scan++ = (uint8_t)((des_b) >> 16); *des_scan++ = (uint8_t)((des_g) >> 16); *des_scan++ = (uint8_t)((des_r) >> 16); des_scan += des_Bpp - 3; } break; case FXDIB_Argb: { FX_DWORD des_a = 0, des_b = 0, des_g = 0, des_r = 0; const uint8_t* p = src_scan; p = src_scan + pPixelWeights->m_SrcStart * src_Bpp; des_b += pPixelWeights->m_Weights[0] * (*p++); des_g += pPixelWeights->m_Weights[0] * (*p++); des_r += pPixelWeights->m_Weights[0] * (*p++); des_a += pPixelWeights->m_Weights[0] * (*p); p = src_scan + pPixelWeights->m_SrcEnd * src_Bpp; des_b += pPixelWeights->m_Weights[1] * (*p++); des_g += pPixelWeights->m_Weights[1] * (*p++); des_r += pPixelWeights->m_Weights[1] * (*p++); des_a += pPixelWeights->m_Weights[1] * (*p); *des_scan++ = (uint8_t)((des_b) >> 16); *des_scan++ = (uint8_t)((des_g) >> 16); *des_scan++ = (uint8_t)((des_r) >> 16); *des_scan++ = (uint8_t)((des_a) >> 16); } break; default: return; } } } void CCodec_ProgressiveDecoder::PngFillScanlineBufCompletedFunc(void* pModule, int pass, int line) { CCodec_ProgressiveDecoder* pCodec = (CCodec_ProgressiveDecoder*)pModule; CFX_DIBitmap* pDIBitmap = pCodec->m_pDeviceBitmap; ASSERT(pDIBitmap); int src_top = pCodec->m_clipBox.top; int src_bottom = pCodec->m_clipBox.bottom; int des_top = pCodec->m_startY; int src_hei = pCodec->m_clipBox.Height(); int des_hei = pCodec->m_sizeY; if (line >= src_top && line < src_bottom) { double scale_y = (double)des_hei / (double)src_hei; int src_row = line - src_top; int des_row = (int)(src_row * scale_y) + des_top; if (des_row >= des_top + des_hei) { return; } pCodec->PngOneOneMapResampleHorz(pDIBitmap, des_row, pCodec->m_pDecodeBuf, pCodec->m_SrcFormat); if (pCodec->m_SrcPassNumber == 1 && scale_y > 1.0) { pCodec->ResampleVert(pDIBitmap, scale_y, des_row); return; } if (pass == 6 && scale_y > 1.0) { pCodec->ResampleVert(pDIBitmap, scale_y, des_row); } } } FX_BOOL CCodec_ProgressiveDecoder::GifReadMoreData(ICodec_GifModule* pGifModule, FXCODEC_STATUS& err_status) { FX_DWORD dwSize = (FX_DWORD)m_pFile->GetSize(); if (dwSize <= m_offSet) { return FALSE; } dwSize = dwSize - m_offSet; FX_DWORD dwAvail = pGifModule->GetAvailInput(m_pGifContext, NULL); 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_Realloc(uint8_t, m_pSrcBuf, m_SrcSize); if (!m_pSrcBuf) { err_status = FXCODEC_STATUS_ERR_MEMORY; return FALSE; } } else { FX_DWORD dwConsume = m_SrcSize - dwAvail; if (dwAvail) { FXSYS_memcpy(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; pGifModule->Input(m_pGifContext, m_pSrcBuf, dwSize + dwAvail); return TRUE; } void CCodec_ProgressiveDecoder::GifRecordCurrentPositionCallback( void* pModule, FX_DWORD& cur_pos) { CCodec_ProgressiveDecoder* pCodec = (CCodec_ProgressiveDecoder*)pModule; FX_DWORD remain_size = pCodec->m_pCodecMgr->GetGifModule()->GetAvailInput(pCodec->m_pGifContext); cur_pos = pCodec->m_offSet - remain_size; } uint8_t* CCodec_ProgressiveDecoder::GifAskLocalPaletteBufCallback( void* pModule, int32_t frame_num, int32_t pal_size) { return FX_Alloc(uint8_t, pal_size); } FX_BOOL CCodec_ProgressiveDecoder::GifInputRecordPositionBufCallback( void* pModule, FX_DWORD rcd_pos, const FX_RECT& img_rc, int32_t pal_num, void* pal_ptr, int32_t delay_time, FX_BOOL user_input, int32_t trans_index, int32_t disposal_method, FX_BOOL interlace) { CCodec_ProgressiveDecoder* pCodec = (CCodec_ProgressiveDecoder*)pModule; pCodec->m_offSet = rcd_pos; FXCODEC_STATUS error_status = FXCODEC_STATUS_ERROR; if (!pCodec->GifReadMoreData(pCodec->m_pCodecMgr->GetGifModule(), error_status)) { return FALSE; } uint8_t* pPalette = NULL; if (pal_num != 0 && pal_ptr) { pPalette = (uint8_t*)pal_ptr; } else { pal_num = pCodec->m_GifPltNumber; pPalette = pCodec->m_pGifPalette; } if (pCodec->m_pSrcPalette == NULL) { pCodec->m_pSrcPalette = FX_Alloc(FX_ARGB, pal_num); } else if (pal_num > pCodec->m_SrcPaletteNumber) { pCodec->m_pSrcPalette = FX_Realloc(FX_ARGB, pCodec->m_pSrcPalette, pal_num); } if (pCodec->m_pSrcPalette == NULL) { return FALSE; } pCodec->m_SrcPaletteNumber = pal_num; for (int i = 0; i < pal_num; i++) { FX_DWORD j = i * 3; pCodec->m_pSrcPalette[i] = ArgbEncode(0xff, pPalette[j], pPalette[j + 1], pPalette[j + 2]); } pCodec->m_GifTransIndex = trans_index; pCodec->m_GifFrameRect = img_rc; pCodec->m_SrcPassNumber = interlace ? 4 : 1; int32_t pal_index = pCodec->m_GifBgIndex; CFX_DIBitmap* pDevice = pCodec->m_pDeviceBitmap; if (trans_index >= pal_num) { trans_index = -1; } if (trans_index != -1) { pCodec->m_pSrcPalette[trans_index] &= 0x00ffffff; if (pDevice->HasAlpha()) { pal_index = trans_index; } } int startX = pCodec->m_startX; int startY = pCodec->m_startY; int sizeX = pCodec->m_sizeX; int sizeY = pCodec->m_sizeY; int Bpp = pDevice->GetBPP() / 8; FX_ARGB argb = pCodec->m_pSrcPalette[pal_index]; for (int row = 0; row < sizeY; row++) { uint8_t* pScanline = (uint8_t*)pDevice->GetScanline(row + startY) + startX * Bpp; switch (pCodec->m_TransMethod) { case 3: { uint8_t gray = FXRGB2GRAY(FXARGB_R(argb), FXARGB_G(argb), FXARGB_B(argb)); FXSYS_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::GifReadScanlineCallback(void* pModule, int32_t row_num, uint8_t* row_buf) { CCodec_ProgressiveDecoder* pCodec = (CCodec_ProgressiveDecoder*)pModule; CFX_DIBitmap* pDIBitmap = pCodec->m_pDeviceBitmap; ASSERT(pDIBitmap); int32_t img_width = pCodec->m_GifFrameRect.Width(); if (!pDIBitmap->HasAlpha()) { uint8_t* byte_ptr = row_buf; for (int i = 0; i < img_width; i++) { if (*byte_ptr == pCodec->m_GifTransIndex) { *byte_ptr = pCodec->m_GifBgIndex; } byte_ptr++; } } int32_t pal_index = pCodec->m_GifBgIndex; if (pCodec->m_GifTransIndex != -1 && pCodec->m_pDeviceBitmap->HasAlpha()) { pal_index = pCodec->m_GifTransIndex; } FXSYS_memset(pCodec->m_pDecodeBuf, pal_index, pCodec->m_SrcWidth); bool bLastPass = (row_num % 2) == 1; int32_t line = row_num + pCodec->m_GifFrameRect.top; int32_t left = pCodec->m_GifFrameRect.left; FXSYS_memcpy(pCodec->m_pDecodeBuf + left, row_buf, img_width); int src_top = pCodec->m_clipBox.top; int src_bottom = pCodec->m_clipBox.bottom; int des_top = pCodec->m_startY; int src_hei = pCodec->m_clipBox.Height(); int des_hei = pCodec->m_sizeY; if (line >= src_top && line < src_bottom) { double scale_y = (double)des_hei / (double)src_hei; int src_row = line - src_top; int des_row = (int)(src_row * scale_y) + des_top; if (des_row >= des_top + des_hei) { return; } pCodec->ReSampleScanline(pDIBitmap, des_row, pCodec->m_pDecodeBuf, pCodec->m_SrcFormat); if (scale_y > 1.0 && (!pCodec->m_bInterpol || pCodec->m_SrcPassNumber == 1)) { pCodec->ResampleVert(pDIBitmap, scale_y, des_row); return; } if (scale_y > 1.0) { int des_bottom = des_top + pCodec->m_sizeY; int des_Bpp = pDIBitmap->GetBPP() >> 3; FX_DWORD des_ScanOffet = pCodec->m_startX * des_Bpp; if (des_row + (int)scale_y >= des_bottom - 1) { uint8_t* scan_src = (uint8_t*)pDIBitmap->GetScanline(des_row) + des_ScanOffet; int cur_row = des_row; while (++cur_row < des_bottom) { uint8_t* scan_des = (uint8_t*)pDIBitmap->GetScanline(cur_row) + des_ScanOffet; FX_DWORD size = pCodec->m_sizeX * des_Bpp; FXSYS_memcpy(scan_des, scan_src, size); } } if (bLastPass) { pCodec->GifDoubleLineResampleVert(pDIBitmap, scale_y, des_row); } } } } void CCodec_ProgressiveDecoder::GifDoubleLineResampleVert( CFX_DIBitmap* pDeviceBitmap, double scale_y, int des_row) { int des_Bpp = pDeviceBitmap->GetBPP() >> 3; FX_DWORD des_ScanOffet = m_startX * des_Bpp; int des_top = m_startY; int des_row_1 = des_row - int(2 * scale_y); if (des_row_1 < des_top) { des_row_1 = des_top; } for (; des_row_1 < des_row; des_row_1++) { uint8_t* scan_des = (uint8_t*)pDeviceBitmap->GetScanline(des_row_1) + des_ScanOffet; PixelWeight* pWeight = m_WeightVert.GetPixelWeight(des_row_1 - des_top); const uint8_t* scan_src1 = pDeviceBitmap->GetScanline(pWeight->m_SrcStart + des_top) + des_ScanOffet; const uint8_t* scan_src2 = pDeviceBitmap->GetScanline(pWeight->m_SrcEnd + des_top) + des_ScanOffet; for (int des_col = 0; des_col < m_sizeX; des_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 des_g = 0; des_g += pWeight->m_Weights[0] * (*scan_src1++); des_g += pWeight->m_Weights[1] * (*scan_src2++); *scan_des++ = (uint8_t)(des_g >> 16); } break; case FXDIB_Rgb: case FXDIB_Rgb32: { FX_DWORD des_b = 0, des_g = 0, des_r = 0; des_b += pWeight->m_Weights[0] * (*scan_src1++); des_g += pWeight->m_Weights[0] * (*scan_src1++); des_r += pWeight->m_Weights[0] * (*scan_src1++); scan_src1 += des_Bpp - 3; des_b += pWeight->m_Weights[1] * (*scan_src2++); des_g += pWeight->m_Weights[1] * (*scan_src2++); des_r += pWeight->m_Weights[1] * (*scan_src2++); scan_src2 += des_Bpp - 3; *scan_des++ = (uint8_t)((des_b) >> 16); *scan_des++ = (uint8_t)((des_g) >> 16); *scan_des++ = (uint8_t)((des_r) >> 16); scan_des += des_Bpp - 3; } break; case FXDIB_Argb: { FX_DWORD des_a = 0, des_b = 0, des_g = 0, des_r = 0; des_b += pWeight->m_Weights[0] * (*scan_src1++); des_g += pWeight->m_Weights[0] * (*scan_src1++); des_r += pWeight->m_Weights[0] * (*scan_src1++); des_a += pWeight->m_Weights[0] * (*scan_src1++); des_b += pWeight->m_Weights[1] * (*scan_src2++); des_g += pWeight->m_Weights[1] * (*scan_src2++); des_r += pWeight->m_Weights[1] * (*scan_src2++); des_a += pWeight->m_Weights[1] * (*scan_src2++); *scan_des++ = (uint8_t)((des_b) >> 16); *scan_des++ = (uint8_t)((des_g) >> 16); *scan_des++ = (uint8_t)((des_r) >> 16); *scan_des++ = (uint8_t)((des_a) >> 16); } break; default: return; } } } int des_bottom = des_top + m_sizeY - 1; if (des_row + (int)(2 * scale_y) >= des_bottom && des_row + (int)scale_y < des_bottom) { GifDoubleLineResampleVert(pDeviceBitmap, scale_y, des_row + (int)scale_y); } } FX_BOOL CCodec_ProgressiveDecoder::BmpReadMoreData(ICodec_BmpModule* pBmpModule, FXCODEC_STATUS& err_status) { FX_DWORD dwSize = (FX_DWORD)m_pFile->GetSize(); if (dwSize <= m_offSet) { return FALSE; } dwSize = dwSize - m_offSet; FX_DWORD dwAvail = pBmpModule->GetAvailInput(m_pBmpContext, NULL); 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_Realloc(uint8_t, m_pSrcBuf, m_SrcSize); if (!m_pSrcBuf) { err_status = FXCODEC_STATUS_ERR_MEMORY; return FALSE; } } else { FX_DWORD dwConsume = m_SrcSize - dwAvail; if (dwAvail) { FXSYS_memcpy(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, m_pSrcBuf, dwSize + dwAvail); return TRUE; } FX_BOOL CCodec_ProgressiveDecoder::BmpInputImagePositionBufCallback( void* pModule, FX_DWORD rcd_pos) { CCodec_ProgressiveDecoder* pCodec = (CCodec_ProgressiveDecoder*)pModule; pCodec->m_offSet = rcd_pos; FXCODEC_STATUS error_status = FXCODEC_STATUS_ERROR; if (!pCodec->BmpReadMoreData(pCodec->m_pCodecMgr->GetBmpModule(), error_status)) { return FALSE; } return TRUE; } void CCodec_ProgressiveDecoder::BmpReadScanlineCallback(void* pModule, int32_t row_num, uint8_t* row_buf) { CCodec_ProgressiveDecoder* pCodec = (CCodec_ProgressiveDecoder*)pModule; CFX_DIBitmap* pDIBitmap = pCodec->m_pDeviceBitmap; ASSERT(pDIBitmap); FXSYS_memcpy(pCodec->m_pDecodeBuf, row_buf, pCodec->m_ScanlineSize); int src_top = pCodec->m_clipBox.top; int src_bottom = pCodec->m_clipBox.bottom; int des_top = pCodec->m_startY; int src_hei = pCodec->m_clipBox.Height(); int des_hei = pCodec->m_sizeY; if (row_num >= src_top && row_num < src_bottom) { double scale_y = (double)des_hei / (double)src_hei; int src_row = row_num - src_top; int des_row = (int)(src_row * scale_y) + des_top; if (des_row >= des_top + des_hei) { return; } pCodec->ReSampleScanline(pDIBitmap, des_row, pCodec->m_pDecodeBuf, pCodec->m_SrcFormat); if (scale_y > 1.0) { if (pCodec->m_BmpIsTopBottom || !pCodec->m_bInterpol) { pCodec->ResampleVert(pDIBitmap, scale_y, des_row); return; } else { pCodec->ResampleVertBT(pDIBitmap, scale_y, des_row); } } } } void CCodec_ProgressiveDecoder::ResampleVertBT(CFX_DIBitmap* pDeviceBitmap, double scale_y, int des_row) { int des_Bpp = pDeviceBitmap->GetBPP() >> 3; FX_DWORD des_ScanOffet = m_startX * des_Bpp; int des_top = m_startY; int des_bottom = m_startY + m_sizeY; int des_row_1 = des_row + int(scale_y); if (des_row_1 >= des_bottom - 1) { uint8_t* scan_src = (uint8_t*)pDeviceBitmap->GetScanline(des_row) + des_ScanOffet; while (++des_row < des_bottom) { uint8_t* scan_des = (uint8_t*)pDeviceBitmap->GetScanline(des_row) + des_ScanOffet; FX_DWORD size = m_sizeX * des_Bpp; FXSYS_memcpy(scan_des, scan_src, size); } return; } for (; des_row_1 > des_row; des_row_1--) { uint8_t* scan_des = (uint8_t*)pDeviceBitmap->GetScanline(des_row_1) + des_ScanOffet; PixelWeight* pWeight = m_WeightVert.GetPixelWeight(des_row_1 - des_top); const uint8_t* scan_src1 = pDeviceBitmap->GetScanline(pWeight->m_SrcStart + des_top) + des_ScanOffet; const uint8_t* scan_src2 = pDeviceBitmap->GetScanline(pWeight->m_SrcEnd + des_top) + des_ScanOffet; for (int des_col = 0; des_col < m_sizeX; des_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 des_g = 0; des_g += pWeight->m_Weights[0] * (*scan_src1++); des_g += pWeight->m_Weights[1] * (*scan_src2++); *scan_des++ = (uint8_t)(des_g >> 16); } break; case FXDIB_Rgb: case FXDIB_Rgb32: { FX_DWORD des_b = 0, des_g = 0, des_r = 0; des_b += pWeight->m_Weights[0] * (*scan_src1++); des_g += pWeight->m_Weights[0] * (*scan_src1++); des_r += pWeight->m_Weights[0] * (*scan_src1++); scan_src1 += des_Bpp - 3; des_b += pWeight->m_Weights[1] * (*scan_src2++); des_g += pWeight->m_Weights[1] * (*scan_src2++); des_r += pWeight->m_Weights[1] * (*scan_src2++); scan_src2 += des_Bpp - 3; *scan_des++ = (uint8_t)((des_b) >> 16); *scan_des++ = (uint8_t)((des_g) >> 16); *scan_des++ = (uint8_t)((des_r) >> 16); scan_des += des_Bpp - 3; } break; case FXDIB_Argb: { FX_DWORD des_a = 0, des_b = 0, des_g = 0, des_r = 0; des_b += pWeight->m_Weights[0] * (*scan_src1++); des_g += pWeight->m_Weights[0] * (*scan_src1++); des_r += pWeight->m_Weights[0] * (*scan_src1++); des_a += pWeight->m_Weights[0] * (*scan_src1++); des_b += pWeight->m_Weights[1] * (*scan_src2++); des_g += pWeight->m_Weights[1] * (*scan_src2++); des_r += pWeight->m_Weights[1] * (*scan_src2++); des_a += pWeight->m_Weights[1] * (*scan_src2++); *scan_des++ = (uint8_t)((des_b) >> 16); *scan_des++ = (uint8_t)((des_g) >> 16); *scan_des++ = (uint8_t)((des_r) >> 16); *scan_des++ = (uint8_t)((des_a) >> 16); } break; default: return; } } } } FX_BOOL CCodec_ProgressiveDecoder::DetectImageType( FXCODEC_IMAGE_TYPE imageType, CFX_DIBAttribute* pAttribute) { m_offSet = 0; FX_DWORD size = (FX_DWORD)m_pFile->GetSize(); if (size > FXCODEC_BLOCK_SIZE) { size = FXCODEC_BLOCK_SIZE; } FX_Free(m_pSrcBuf); m_pSrcBuf = FX_Alloc(uint8_t, size); FXSYS_memset(m_pSrcBuf, 0, size); m_SrcSize = size; switch (imageType) { case FXCODEC_IMAGE_BMP: { ICodec_BmpModule* pBmpModule = m_pCodecMgr->GetBmpModule(); if (pBmpModule == NULL) { m_status = FXCODEC_STATUS_ERR_MEMORY; return FALSE; } pBmpModule->InputImagePositionBufCallback = BmpInputImagePositionBufCallback; pBmpModule->ReadScanlineCallback = BmpReadScanlineCallback; m_pBmpContext = pBmpModule->Start((void*)this); if (m_pBmpContext == NULL) { m_status = FXCODEC_STATUS_ERR_MEMORY; return FALSE; } FX_BOOL bResult = m_pFile->ReadBlock(m_pSrcBuf, 0, size); if (!bResult) { m_status = FXCODEC_STATUS_ERR_READ; return FALSE; } m_offSet += size; pBmpModule->Input(m_pBmpContext, m_pSrcBuf, size); FX_DWORD* pPalette = NULL; int32_t readResult = pBmpModule->ReadHeader( m_pBmpContext, &m_SrcWidth, &m_SrcHeight, &m_BmpIsTopBottom, &m_SrcComponents, &m_SrcPaletteNumber, &pPalette, 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, &m_SrcWidth, &m_SrcHeight, &m_BmpIsTopBottom, &m_SrcComponents, &m_SrcPaletteNumber, &pPalette, pAttribute); } if (readResult == 1) { 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); FXSYS_memcpy(m_pSrcPalette, pPalette, m_SrcPaletteNumber * sizeof(FX_DWORD)); } else { m_pSrcPalette = nullptr; } return TRUE; } if (m_pBmpContext) { pBmpModule->Finish(m_pBmpContext); m_pBmpContext = NULL; } m_status = FXCODEC_STATUS_ERR_FORMAT; return FALSE; } break; case FXCODEC_IMAGE_JPG: { ICodec_JpegModule* pJpegModule = m_pCodecMgr->GetJpegModule(); if (pJpegModule == NULL) { m_status = FXCODEC_STATUS_ERR_MEMORY; return FALSE; } m_pJpegContext = pJpegModule->Start(); if (m_pJpegContext == NULL) { m_status = FXCODEC_STATUS_ERR_MEMORY; return FALSE; } FX_BOOL bResult = m_pFile->ReadBlock(m_pSrcBuf, 0, size); if (!bResult) { m_status = FXCODEC_STATUS_ERR_READ; return FALSE; } m_offSet += size; pJpegModule->Input(m_pJpegContext, m_pSrcBuf, size); int32_t readResult = pJpegModule->ReadHeader(m_pJpegContext, &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, &m_SrcWidth, &m_SrcHeight, &m_SrcComponents, pAttribute); } if (!readResult) { m_SrcBPC = 8; m_clipBox = FX_RECT(0, 0, m_SrcWidth, m_SrcHeight); return TRUE; } if (m_pJpegContext) { pJpegModule->Finish(m_pJpegContext); m_pJpegContext = NULL; } m_status = FXCODEC_STATUS_ERR_FORMAT; return FALSE; } break; case FXCODEC_IMAGE_PNG: { ICodec_PngModule* pPngModule = m_pCodecMgr->GetPngModule(); if (pPngModule == NULL) { m_status = FXCODEC_STATUS_ERR_MEMORY; return FALSE; } pPngModule->ReadHeaderCallback = CCodec_ProgressiveDecoder::PngReadHeaderFunc; pPngModule->AskScanlineBufCallback = CCodec_ProgressiveDecoder::PngAskScanlineBufFunc; pPngModule->FillScanlineBufCompletedCallback = CCodec_ProgressiveDecoder::PngFillScanlineBufCompletedFunc; m_pPngContext = pPngModule->Start((void*)this); if (m_pPngContext == NULL) { m_status = FXCODEC_STATUS_ERR_MEMORY; return FALSE; } FX_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, m_pSrcBuf, size, pAttribute); while (bResult) { FX_DWORD remain_size = (FX_DWORD)m_pFile->GetSize() - m_offSet; FX_DWORD input_size = remain_size > FXCODEC_BLOCK_SIZE ? FXCODEC_BLOCK_SIZE : remain_size; if (input_size == 0) { if (m_pPngContext) { pPngModule->Finish(m_pPngContext); } m_pPngContext = NULL; 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); FXSYS_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, m_pSrcBuf, input_size, pAttribute); } ASSERT(!bResult); if (m_pPngContext) { pPngModule->Finish(m_pPngContext); m_pPngContext = NULL; } if (m_SrcPassNumber == 0) { m_status = FXCODEC_STATUS_ERR_FORMAT; return FALSE; } } break; case FXCODEC_IMAGE_GIF: { ICodec_GifModule* pGifModule = m_pCodecMgr->GetGifModule(); if (pGifModule == NULL) { m_status = FXCODEC_STATUS_ERR_MEMORY; return FALSE; } pGifModule->RecordCurrentPositionCallback = CCodec_ProgressiveDecoder::GifRecordCurrentPositionCallback; pGifModule->AskLocalPaletteBufCallback = CCodec_ProgressiveDecoder::GifAskLocalPaletteBufCallback; pGifModule->InputRecordPositionBufCallback = CCodec_ProgressiveDecoder::GifInputRecordPositionBufCallback; pGifModule->ReadScanlineCallback = CCodec_ProgressiveDecoder::GifReadScanlineCallback; m_pGifContext = pGifModule->Start((void*)this); if (m_pGifContext == NULL) { m_status = FXCODEC_STATUS_ERR_MEMORY; return FALSE; } FX_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, m_pSrcBuf, size); m_SrcComponents = 1; int32_t readResult = pGifModule->ReadHeader( m_pGifContext, &m_SrcWidth, &m_SrcHeight, &m_GifPltNumber, (void**)&m_pGifPalette, &m_GifBgIndex, nullptr); while (readResult == 2) { FXCODEC_STATUS error_status = FXCODEC_STATUS_ERR_FORMAT; if (!GifReadMoreData(pGifModule, error_status)) { m_status = error_status; return FALSE; } readResult = pGifModule->ReadHeader( m_pGifContext, &m_SrcWidth, &m_SrcHeight, &m_GifPltNumber, (void**)&m_pGifPalette, &m_GifBgIndex, nullptr); } if (readResult == 1) { m_SrcBPC = 8; m_clipBox = FX_RECT(0, 0, m_SrcWidth, m_SrcHeight); return TRUE; } if (m_pGifContext) { pGifModule->Finish(m_pGifContext); m_pGifContext = NULL; } m_status = FXCODEC_STATUS_ERR_FORMAT; return FALSE; } break; case FXCODEC_IMAGE_TIF: { ICodec_TiffModule* pTiffModule = m_pCodecMgr->GetTiffModule(); if (pTiffModule == NULL) { m_status = FXCODEC_STATUS_ERR_FORMAT; return FALSE; } m_pTiffContext = pTiffModule->CreateDecoder(m_pFile); if (m_pTiffContext == NULL) { m_status = FXCODEC_STATUS_ERR_FORMAT; return FALSE; } int32_t frames = 0; pTiffModule->GetFrames(m_pTiffContext, frames); FX_DWORD bpc; FX_BOOL ret = pTiffModule->LoadFrameInfo( m_pTiffContext, 0, (FX_DWORD&)m_SrcWidth, (FX_DWORD&)m_SrcHeight, (FX_DWORD&)m_SrcComponents, bpc, pAttribute); m_SrcComponents = 4; m_clipBox = FX_RECT(0, 0, m_SrcWidth, m_SrcHeight); if (!ret) { pTiffModule->DestroyDecoder(m_pTiffContext); (m_pTiffContext = NULL); (m_status = FXCODEC_STATUS_ERR_FORMAT); return FALSE; } } break; default: m_status = FXCODEC_STATUS_ERR_FORMAT; return FALSE; } return TRUE; } FXCODEC_STATUS CCodec_ProgressiveDecoder::LoadImageInfo( IFX_FileRead* pFile, FXCODEC_IMAGE_TYPE imageType, CFX_DIBAttribute* pAttribute) { 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 == NULL) { m_status = FXCODEC_STATUS_ERR_PARAMS; m_pFile = NULL; 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_imagType = imageType; m_status = FXCODEC_STATUS_FRAME_READY; return m_status; } for (int type = FXCODEC_IMAGE_BMP; type < FXCODEC_IMAGE_MAX; type++) { if (DetectImageType((FXCODEC_IMAGE_TYPE)type, pAttribute)) { m_imagType = (FXCODEC_IMAGE_TYPE)type; m_status = FXCODEC_STATUS_FRAME_READY; return m_status; } } m_status = FXCODEC_STATUS_ERR_FORMAT; m_pFile = NULL; 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; } if (clip->left < 0) { clip->left = 0; } if (clip->right > m_SrcWidth) { clip->right = m_SrcWidth; } if (clip->top < 0) { clip->top = 0; } if (clip->bottom > m_SrcHeight) { 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 des_format, FXCodec_Format src_format) { switch (des_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 (des_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 _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; } } } void CCodec_ProgressiveDecoder::ReSampleScanline(CFX_DIBitmap* pDeviceBitmap, int des_line, uint8_t* src_scan, FXCodec_Format src_format) { int src_left = m_clipBox.left; int des_left = m_startX; uint8_t* des_scan = pDeviceBitmap->GetBuffer() + des_line * pDeviceBitmap->GetPitch(); int src_bpp = src_format & 0xff; int des_bpp = pDeviceBitmap->GetBPP(); int src_Bpp = src_bpp >> 3; int des_Bpp = des_bpp >> 3; src_scan += src_left * src_Bpp; des_scan += des_left * des_Bpp; for (int des_col = 0; des_col < m_sizeX; des_col++) { PixelWeight* pPixelWeights = m_WeightHorz.GetPixelWeight(des_col); switch (m_TransMethod) { case -1: return; case 0: return; case 1: return; case 2: { FX_DWORD des_g = 0; for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j++) { int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; des_g += pixel_weight * src_scan[j]; } *des_scan++ = (uint8_t)(des_g >> 16); } break; case 3: { int des_r = 0, des_g = 0, des_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]]; des_r += pixel_weight * (uint8_t)(argb >> 16); des_g += pixel_weight * (uint8_t)(argb >> 8); des_b += pixel_weight * (uint8_t)argb; } *des_scan++ = (uint8_t)FXRGB2GRAY((des_r >> 16), (des_g >> 16), (des_b >> 16)); } break; case 4: { FX_DWORD des_b = 0, des_g = 0, des_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_Bpp; des_b += pixel_weight * (*src_pixel++); des_g += pixel_weight * (*src_pixel++); des_r += pixel_weight * (*src_pixel); } *des_scan++ = (uint8_t)FXRGB2GRAY((des_r >> 16), (des_g >> 16), (des_b >> 16)); } break; case 5: { FX_DWORD des_b = 0, des_g = 0, des_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_Bpp; uint8_t src_b = 0, src_g = 0, src_r = 0; AdobeCMYK_to_sRGB1(255 - src_pixel[0], 255 - src_pixel[1], 255 - src_pixel[2], 255 - src_pixel[3], src_r, src_g, src_b); des_b += pixel_weight * src_b; des_g += pixel_weight * src_g; des_r += pixel_weight * src_r; } *des_scan++ = (uint8_t)FXRGB2GRAY((des_r >> 16), (des_g >> 16), (des_b >> 16)); } break; case 6: return; case 7: { FX_DWORD des_g = 0; for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j++) { int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; des_g += pixel_weight * src_scan[j]; } FXSYS_memset(des_scan, (uint8_t)(des_g >> 16), 3); des_scan += des_Bpp; } break; case 8: { int des_r = 0, des_g = 0, des_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]]; des_r += pixel_weight * (uint8_t)(argb >> 16); des_g += pixel_weight * (uint8_t)(argb >> 8); des_b += pixel_weight * (uint8_t)argb; } *des_scan++ = (uint8_t)((des_b) >> 16); *des_scan++ = (uint8_t)((des_g) >> 16); *des_scan++ = (uint8_t)((des_r) >> 16); des_scan += des_Bpp - 3; } break; case 12: { if (m_pBmpContext) { int des_r = 0, des_g = 0, des_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]]; des_r += pixel_weight * (uint8_t)(argb >> 16); des_g += pixel_weight * (uint8_t)(argb >> 8); des_b += pixel_weight * (uint8_t)argb; } *des_scan++ = (uint8_t)((des_b) >> 16); *des_scan++ = (uint8_t)((des_g) >> 16); *des_scan++ = (uint8_t)((des_r) >> 16); *des_scan++ = 0xFF; } else { int des_a = 0, des_r = 0, des_g = 0, des_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]]; des_a += pixel_weight * (uint8_t)(argb >> 24); des_r += pixel_weight * (uint8_t)(argb >> 16); des_g += pixel_weight * (uint8_t)(argb >> 8); des_b += pixel_weight * (uint8_t)argb; } *des_scan++ = (uint8_t)((des_b) >> 16); *des_scan++ = (uint8_t)((des_g) >> 16); *des_scan++ = (uint8_t)((des_r) >> 16); *des_scan++ = (uint8_t)((des_a) >> 16); } } break; case 9: { FX_DWORD des_b = 0, des_g = 0, des_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_Bpp; des_b += pixel_weight * (*src_pixel++); des_g += pixel_weight * (*src_pixel++); des_r += pixel_weight * (*src_pixel); } *des_scan++ = (uint8_t)((des_b) >> 16); *des_scan++ = (uint8_t)((des_g) >> 16); *des_scan++ = (uint8_t)((des_r) >> 16); des_scan += des_Bpp - 3; } break; case 10: { FX_DWORD des_b = 0, des_g = 0, des_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_Bpp; uint8_t src_b = 0, src_g = 0, src_r = 0; AdobeCMYK_to_sRGB1(255 - src_pixel[0], 255 - src_pixel[1], 255 - src_pixel[2], 255 - src_pixel[3], src_r, src_g, src_b); des_b += pixel_weight * src_b; des_g += pixel_weight * src_g; des_r += pixel_weight * src_r; } *des_scan++ = (uint8_t)((des_b) >> 16); *des_scan++ = (uint8_t)((des_g) >> 16); *des_scan++ = (uint8_t)((des_r) >> 16); des_scan += des_Bpp - 3; } break; case 11: { FX_DWORD des_alpha = 0, des_r = 0, des_g = 0, des_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_Bpp; pixel_weight = pixel_weight * src_pixel[3] / 255; des_b += pixel_weight * (*src_pixel++); des_g += pixel_weight * (*src_pixel++); des_r += pixel_weight * (*src_pixel); des_alpha += pixel_weight; } *des_scan++ = (uint8_t)((des_b) >> 16); *des_scan++ = (uint8_t)((des_g) >> 16); *des_scan++ = (uint8_t)((des_r) >> 16); *des_scan++ = (uint8_t)((des_alpha * 255) >> 16); } break; default: return; } } } void CCodec_ProgressiveDecoder::ResampleVert(CFX_DIBitmap* pDeviceBitmap, double scale_y, int des_row) { int des_Bpp = pDeviceBitmap->GetBPP() >> 3; FX_DWORD des_ScanOffet = m_startX * des_Bpp; if (m_bInterpol) { int des_top = m_startY; int des_row_1 = des_row - int(scale_y); if (des_row_1 < des_top) { int des_bottom = des_top + m_sizeY; if (des_row + (int)scale_y >= des_bottom - 1) { uint8_t* scan_src = (uint8_t*)pDeviceBitmap->GetScanline(des_row) + des_ScanOffet; while (++des_row < des_bottom) { uint8_t* scan_des = (uint8_t*)pDeviceBitmap->GetScanline(des_row) + des_ScanOffet; FX_DWORD size = m_sizeX * des_Bpp; FXSYS_memcpy(scan_des, scan_src, size); } } return; } for (; des_row_1 < des_row; des_row_1++) { uint8_t* scan_des = (uint8_t*)pDeviceBitmap->GetScanline(des_row_1) + des_ScanOffet; PixelWeight* pWeight = m_WeightVert.GetPixelWeight(des_row_1 - des_top); const uint8_t* scan_src1 = pDeviceBitmap->GetScanline(pWeight->m_SrcStart + des_top) + des_ScanOffet; const uint8_t* scan_src2 = pDeviceBitmap->GetScanline(pWeight->m_SrcEnd + des_top) + des_ScanOffet; for (int des_col = 0; des_col < m_sizeX; des_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 des_g = 0; des_g += pWeight->m_Weights[0] * (*scan_src1++); des_g += pWeight->m_Weights[1] * (*scan_src2++); *scan_des++ = (uint8_t)(des_g >> 16); } break; case FXDIB_Rgb: case FXDIB_Rgb32: { FX_DWORD des_b = 0, des_g = 0, des_r = 0; des_b += pWeight->m_Weights[0] * (*scan_src1++); des_g += pWeight->m_Weights[0] * (*scan_src1++); des_r += pWeight->m_Weights[0] * (*scan_src1++); scan_src1 += des_Bpp - 3; des_b += pWeight->m_Weights[1] * (*scan_src2++); des_g += pWeight->m_Weights[1] * (*scan_src2++); des_r += pWeight->m_Weights[1] * (*scan_src2++); scan_src2 += des_Bpp - 3; *scan_des++ = (uint8_t)((des_b) >> 16); *scan_des++ = (uint8_t)((des_g) >> 16); *scan_des++ = (uint8_t)((des_r) >> 16); scan_des += des_Bpp - 3; } break; case FXDIB_Argb: { FX_DWORD des_a = 0, des_b = 0, des_g = 0, des_r = 0; des_b += pWeight->m_Weights[0] * (*scan_src1++); des_g += pWeight->m_Weights[0] * (*scan_src1++); des_r += pWeight->m_Weights[0] * (*scan_src1++); des_a += pWeight->m_Weights[0] * (*scan_src1++); des_b += pWeight->m_Weights[1] * (*scan_src2++); des_g += pWeight->m_Weights[1] * (*scan_src2++); des_r += pWeight->m_Weights[1] * (*scan_src2++); des_a += pWeight->m_Weights[1] * (*scan_src2++); *scan_des++ = (uint8_t)((des_b) >> 16); *scan_des++ = (uint8_t)((des_g) >> 16); *scan_des++ = (uint8_t)((des_r) >> 16); *scan_des++ = (uint8_t)((des_a) >> 16); } break; default: return; } } } int des_bottom = des_top + m_sizeY; if (des_row + (int)scale_y >= des_bottom - 1) { uint8_t* scan_src = (uint8_t*)pDeviceBitmap->GetScanline(des_row) + des_ScanOffet; while (++des_row < des_bottom) { uint8_t* scan_des = (uint8_t*)pDeviceBitmap->GetScanline(des_row) + des_ScanOffet; FX_DWORD size = m_sizeX * des_Bpp; FXSYS_memcpy(scan_des, scan_src, size); } } return; } int multiple = (int)FXSYS_ceil((FX_FLOAT)scale_y - 1); if (multiple > 0) { uint8_t* scan_src = (uint8_t*)pDeviceBitmap->GetScanline(des_row) + des_ScanOffet; for (int i = 1; i <= multiple; i++) { if (des_row + i >= m_startY + m_sizeY) { return; } uint8_t* scan_des = (uint8_t*)pDeviceBitmap->GetScanline(des_row + i) + des_ScanOffet; FX_DWORD size = m_sizeX * des_Bpp; FXSYS_memcpy(scan_des, scan_src, size); } } } void CCodec_ProgressiveDecoder::Resample(CFX_DIBitmap* pDeviceBitmap, int32_t src_line, uint8_t* src_scan, FXCodec_Format src_format) { int src_top = m_clipBox.top; int des_top = m_startY; int src_hei = m_clipBox.Height(); int des_hei = m_sizeY; if (src_line >= src_top) { double scale_y = (double)des_hei / (double)src_hei; int src_row = src_line - src_top; int des_row = (int)(src_row * scale_y) + des_top; if (des_row >= des_top + des_hei) { return; } ReSampleScanline(pDeviceBitmap, des_row, m_pDecodeBuf, src_format); if (scale_y > 1.0) { ResampleVert(pDeviceBitmap, scale_y, des_row); } } } FXCODEC_STATUS CCodec_ProgressiveDecoder::GetFrames(int32_t& frames, IFX_Pause* pPause) { if (!(m_status == FXCODEC_STATUS_FRAME_READY || m_status == FXCODEC_STATUS_FRAME_TOBECONTINUE)) { return FXCODEC_STATUS_ERROR; } switch (m_imagType) { case FXCODEC_IMAGE_BMP: case FXCODEC_IMAGE_JPG: case FXCODEC_IMAGE_PNG: case FXCODEC_IMAGE_TIF: frames = m_FrameNumber = 1; return m_status = FXCODEC_STATUS_DECODE_READY; case FXCODEC_IMAGE_GIF: { ICodec_GifModule* pGifModule = m_pCodecMgr->GetGifModule(); while (TRUE) { int32_t readResult = pGifModule->LoadFrameInfo(m_pGifContext, &m_FrameNumber); while (readResult == 2) { FXCODEC_STATUS error_status = FXCODEC_STATUS_ERR_READ; if (!GifReadMoreData(pGifModule, error_status)) { return error_status; } if (pPause && pPause->NeedToPauseNow()) { return m_status = FXCODEC_STATUS_FRAME_TOBECONTINUE; } readResult = pGifModule->LoadFrameInfo(m_pGifContext, &m_FrameNumber); } if (readResult == 1) { frames = m_FrameNumber; return m_status = FXCODEC_STATUS_DECODE_READY; } if (m_pGifContext) { pGifModule->Finish(m_pGifContext); m_pGifContext = NULL; } return m_status = FXCODEC_STATUS_ERROR; } } break; default: break; } return FXCODEC_STATUS_ERROR; } FXCODEC_STATUS CCodec_ProgressiveDecoder::StartDecode(CFX_DIBitmap* pDIBitmap, int start_x, int start_y, int size_x, int size_y, int32_t frames, FX_BOOL bInterpol) { if (m_status != FXCODEC_STATUS_DECODE_READY) { return FXCODEC_STATUS_ERROR; } if (pDIBitmap == NULL || pDIBitmap->GetBPP() < 8 || frames < 0 || frames >= m_FrameNumber) { 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_bInterpol = bInterpol; m_FrameCur = 0; if (start_x < 0 || out_range_x > 0) { FX_FLOAT scaleX = (FX_FLOAT)m_clipBox.Width() / (FX_FLOAT)size_x; if (start_x < 0) { m_clipBox.left -= (int32_t)FXSYS_ceil((FX_FLOAT)start_x * scaleX); } if (out_range_x > 0) { m_clipBox.right -= (int32_t)FXSYS_floor((FX_FLOAT)out_range_x * scaleX); } } if (start_y < 0 || out_range_y > 0) { FX_FLOAT scaleY = (FX_FLOAT)m_clipBox.Height() / (FX_FLOAT)size_y; if (start_y < 0) { m_clipBox.top -= (int32_t)FXSYS_ceil((FX_FLOAT)start_y * scaleY); } if (out_range_y > 0) { m_clipBox.bottom -= (int32_t)FXSYS_floor((FX_FLOAT)out_range_y * scaleY); } } if (m_clipBox.IsEmpty()) { return FXCODEC_STATUS_ERR_PARAMS; } switch (m_imagType) { case FXCODEC_IMAGE_JPG: { ICodec_JpegModule* pJpegModule = m_pCodecMgr->GetJpegModule(); int down_scale = 1; GetDownScale(down_scale); FX_BOOL bStart = pJpegModule->StartScanline(m_pJpegContext, down_scale); while (!bStart) { FXCODEC_STATUS error_status = FXCODEC_STATUS_ERROR; if (!JpegReadMoreData(pJpegModule, error_status)) { m_pDeviceBitmap = NULL; m_pFile = NULL; return m_status = error_status; } bStart = pJpegModule->StartScanline(m_pJpegContext, 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); FXSYS_memset(m_pDecodeBuf, 0, scanline_size); m_WeightHorz.Calc(m_sizeX, 0, m_sizeX, m_clipBox.Width(), 0, m_clipBox.Width(), m_bInterpol); 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); return m_status = FXCODEC_STATUS_DECODE_TOBECONTINUE; } break; case FXCODEC_IMAGE_PNG: { ICodec_PngModule* pPngModule = m_pCodecMgr->GetPngModule(); if (pPngModule == NULL) { m_pDeviceBitmap = NULL; m_pFile = NULL; return m_status = FXCODEC_STATUS_ERR_MEMORY; } if (m_pPngContext) { pPngModule->Finish(m_pPngContext); m_pPngContext = NULL; } m_pPngContext = pPngModule->Start((void*)this); if (m_pPngContext == NULL) { m_pDeviceBitmap = NULL; m_pFile = NULL; return m_status = FXCODEC_STATUS_ERR_MEMORY; } 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 = NULL; m_pFile = NULL; return m_status = FXCODEC_STATUS_ERR_PARAMS; } } 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); FXSYS_memset(m_pDecodeBuf, 0, scanline_size); m_WeightHorzOO.Calc(m_sizeX, m_clipBox.Width(), m_bInterpol); m_WeightVert.Calc(m_sizeY, m_clipBox.Height()); return m_status = FXCODEC_STATUS_DECODE_TOBECONTINUE; } break; case FXCODEC_IMAGE_GIF: { ICodec_GifModule* pGifModule = m_pCodecMgr->GetGifModule(); if (pGifModule == NULL) { m_pDeviceBitmap = NULL; m_pFile = NULL; return m_status = FXCODEC_STATUS_ERR_MEMORY; } 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); FXSYS_memset(m_pDecodeBuf, 0, scanline_size); m_WeightHorz.Calc(m_sizeX, 0, m_sizeX, m_clipBox.Width(), 0, m_clipBox.Width(), m_bInterpol); m_WeightVert.Calc(m_sizeY, m_clipBox.Height()); m_FrameCur = frames; return m_status = FXCODEC_STATUS_DECODE_TOBECONTINUE; } break; case FXCODEC_IMAGE_BMP: { ICodec_BmpModule* pBmpModule = m_pCodecMgr->GetBmpModule(); if (pBmpModule == NULL) { m_pDeviceBitmap = NULL; m_pFile = NULL; return m_status = FXCODEC_STATUS_ERR_MEMORY; } switch (m_SrcComponents) { case 1: m_SrcFormat = FXCodec_8bppRgb; break; case 3: m_SrcFormat = FXCodec_Rgb; break; case 4: m_SrcFormat = FXCodec_Rgb32; break; } 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); FXSYS_memset(m_pDecodeBuf, 0, m_ScanlineSize); m_WeightHorz.Calc(m_sizeX, 0, m_sizeX, m_clipBox.Width(), 0, m_clipBox.Width(), m_bInterpol); m_WeightVert.Calc(m_sizeY, m_clipBox.Height()); return m_status = FXCODEC_STATUS_DECODE_TOBECONTINUE; } break; case FXCODEC_IMAGE_TIF: return m_status = FXCODEC_STATUS_DECODE_TOBECONTINUE; default: break; } return FXCODEC_STATUS_ERROR; } FXCODEC_STATUS CCodec_ProgressiveDecoder::ContinueDecode(IFX_Pause* pPause) { if (m_status != FXCODEC_STATUS_DECODE_TOBECONTINUE) { return FXCODEC_STATUS_ERROR; } switch (m_imagType) { case FXCODEC_IMAGE_JPG: { ICodec_JpegModule* pJpegModule = m_pCodecMgr->GetJpegModule(); while (TRUE) { FX_BOOL readRes = pJpegModule->ReadScanline(m_pJpegContext, m_pDecodeBuf); while (!readRes) { FXCODEC_STATUS error_status = FXCODEC_STATUS_DECODE_FINISH; if (!JpegReadMoreData(pJpegModule, error_status)) { m_pDeviceBitmap = NULL; m_pFile = NULL; return m_status = error_status; } readRes = pJpegModule->ReadScanline(m_pJpegContext, 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 = NULL; m_pFile = NULL; return m_status = FXCODEC_STATUS_DECODE_FINISH; } Resample(m_pDeviceBitmap, m_SrcRow, m_pDecodeBuf, m_SrcFormat); m_SrcRow++; if (pPause && pPause->NeedToPauseNow()) { return m_status = FXCODEC_STATUS_DECODE_TOBECONTINUE; } } } break; case FXCODEC_IMAGE_PNG: { ICodec_PngModule* pPngModule = m_pCodecMgr->GetPngModule(); while (TRUE) { FX_DWORD remain_size = (FX_DWORD)m_pFile->GetSize() - m_offSet; FX_DWORD input_size = remain_size > FXCODEC_BLOCK_SIZE ? FXCODEC_BLOCK_SIZE : remain_size; if (input_size == 0) { if (m_pPngContext) { pPngModule->Finish(m_pPngContext); } m_pPngContext = NULL; m_pDeviceBitmap = NULL; m_pFile = NULL; return m_status = FXCODEC_STATUS_DECODE_FINISH; } if (m_pSrcBuf && input_size > m_SrcSize) { FX_Free(m_pSrcBuf); m_pSrcBuf = FX_Alloc(uint8_t, input_size); FXSYS_memset(m_pSrcBuf, 0, input_size); m_SrcSize = input_size; } FX_BOOL bResult = m_pFile->ReadBlock(m_pSrcBuf, m_offSet, input_size); if (!bResult) { m_pDeviceBitmap = NULL; m_pFile = NULL; return m_status = FXCODEC_STATUS_ERR_READ; } m_offSet += input_size; bResult = pPngModule->Input(m_pPngContext, m_pSrcBuf, input_size, nullptr); if (!bResult) { m_pDeviceBitmap = NULL; m_pFile = NULL; return m_status = FXCODEC_STATUS_ERROR; } if (pPause && pPause->NeedToPauseNow()) { return m_status = FXCODEC_STATUS_DECODE_TOBECONTINUE; } } } break; case FXCODEC_IMAGE_GIF: { ICodec_GifModule* pGifModule = m_pCodecMgr->GetGifModule(); while (TRUE) { int32_t readRes = pGifModule->LoadFrame(m_pGifContext, m_FrameCur, nullptr); while (readRes == 2) { FXCODEC_STATUS error_status = FXCODEC_STATUS_DECODE_FINISH; if (!GifReadMoreData(pGifModule, error_status)) { m_pDeviceBitmap = NULL; m_pFile = NULL; return m_status = error_status; } if (pPause && pPause->NeedToPauseNow()) { return m_status = FXCODEC_STATUS_DECODE_TOBECONTINUE; } readRes = pGifModule->LoadFrame(m_pGifContext, m_FrameCur, nullptr); } if (readRes == 1) { m_pDeviceBitmap = NULL; m_pFile = NULL; return m_status = FXCODEC_STATUS_DECODE_FINISH; } m_pDeviceBitmap = NULL; m_pFile = NULL; return m_status = FXCODEC_STATUS_ERROR; } } break; case FXCODEC_IMAGE_BMP: { ICodec_BmpModule* pBmpModule = m_pCodecMgr->GetBmpModule(); while (TRUE) { int32_t readRes = pBmpModule->LoadImage(m_pBmpContext); while (readRes == 2) { FXCODEC_STATUS error_status = FXCODEC_STATUS_DECODE_FINISH; if (!BmpReadMoreData(pBmpModule, error_status)) { m_pDeviceBitmap = NULL; m_pFile = NULL; return m_status = error_status; } if (pPause && pPause->NeedToPauseNow()) { return m_status = FXCODEC_STATUS_DECODE_TOBECONTINUE; } readRes = pBmpModule->LoadImage(m_pBmpContext); } if (readRes == 1) { m_pDeviceBitmap = NULL; m_pFile = NULL; return m_status = FXCODEC_STATUS_DECODE_FINISH; } m_pDeviceBitmap = NULL; m_pFile = NULL; return m_status = FXCODEC_STATUS_ERROR; } } break; case FXCODEC_IMAGE_TIF: { ICodec_TiffModule* pTiffModule = m_pCodecMgr->GetTiffModule(); FX_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, m_pDeviceBitmap); m_pDeviceBitmap = NULL; m_pFile = NULL; if (!ret) { return m_status = FXCODEC_STATUS_ERROR; } return m_status = FXCODEC_STATUS_DECODE_FINISH; } else { CFX_DIBitmap* pDIBitmap = new CFX_DIBitmap; pDIBitmap->Create(m_SrcWidth, m_SrcHeight, FXDIB_Argb); if (pDIBitmap->GetBuffer() == NULL) { delete pDIBitmap; m_pDeviceBitmap = NULL; m_pFile = NULL; return m_status = FXCODEC_STATUS_ERR_MEMORY; } ret = pTiffModule->Decode(m_pTiffContext, pDIBitmap); if (!ret) { delete pDIBitmap; m_pDeviceBitmap = NULL; m_pFile = NULL; return m_status = FXCODEC_STATUS_ERROR; } 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 (pDIBitmap != pClipBitmap) { delete pDIBitmap; } if (pClipBitmap == NULL) { m_pDeviceBitmap = NULL; m_pFile = NULL; return m_status = FXCODEC_STATUS_ERR_MEMORY; } CFX_DIBitmap* pFormatBitmap = NULL; switch (m_pDeviceBitmap->GetFormat()) { case FXDIB_8bppRgb: pFormatBitmap = new CFX_DIBitmap; pFormatBitmap->Create(pClipBitmap->GetWidth(), pClipBitmap->GetHeight(), FXDIB_8bppRgb); break; case FXDIB_8bppMask: pFormatBitmap = new CFX_DIBitmap; pFormatBitmap->Create(pClipBitmap->GetWidth(), pClipBitmap->GetHeight(), FXDIB_8bppMask); break; case FXDIB_Rgb: pFormatBitmap = new CFX_DIBitmap; pFormatBitmap->Create(pClipBitmap->GetWidth(), pClipBitmap->GetHeight(), FXDIB_Rgb); break; case FXDIB_Rgb32: pFormatBitmap = new 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++) { uint8_t* src_line = (uint8_t*)pClipBitmap->GetScanline(row); uint8_t* des_line = (uint8_t*)pFormatBitmap->GetScanline(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; *des_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++) { uint8_t* src_line = (uint8_t*)pClipBitmap->GetScanline(row); uint8_t* des_line = (uint8_t*)pFormatBitmap->GetScanline(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; *des_line++ = b; *des_line++ = g; *des_line++ = r; des_line += desBpp - 3; src_line += 4; } } } break; default: break; } if (pClipBitmap != pFormatBitmap) { delete pClipBitmap; } if (pFormatBitmap == NULL) { m_pDeviceBitmap = NULL; m_pFile = NULL; return m_status = FXCODEC_STATUS_ERR_MEMORY; } CFX_DIBitmap* pStrechBitmap = pFormatBitmap->StretchTo( m_sizeX, m_sizeY, m_bInterpol ? FXDIB_INTERPOL : FXDIB_DOWNSAMPLE); delete pFormatBitmap; pFormatBitmap = NULL; if (pStrechBitmap == NULL) { m_pDeviceBitmap = NULL; m_pFile = NULL; return m_status = FXCODEC_STATUS_ERR_MEMORY; } m_pDeviceBitmap->TransferBitmap(m_startX, m_startY, m_sizeX, m_sizeY, pStrechBitmap, 0, 0); delete pStrechBitmap; pStrechBitmap = NULL; m_pDeviceBitmap = NULL; m_pFile = NULL; return m_status = FXCODEC_STATUS_DECODE_FINISH; } } break; default: break; } return FXCODEC_STATUS_ERROR; } ICodec_ProgressiveDecoder* CCodec_ModuleMgr::CreateProgressiveDecoder() { return new CCodec_ProgressiveDecoder(this); }