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1 // Copyright 2014 PDFium Authors. All rights reserved. | 1 // Copyright 2014 PDFium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
6 | 6 |
7 #include "../../../include/fxge/fx_ge.h" | 7 #include "../../../include/fxge/fx_ge.h" |
8 #include "../../../include/fxcodec/fx_codec.h" | 8 #include "../../../include/fxcodec/fx_codec.h" |
9 #include "../../../include/fpdfapi/fpdf_module.h" | 9 #include "../../../include/fpdfapi/fpdf_module.h" |
10 #include "../../../include/fpdfapi/fpdf_render.h" | 10 #include "../../../include/fpdfapi/fpdf_render.h" |
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489 CFX_ByteString cs = pCSObj->GetString(); | 489 CFX_ByteString cs = pCSObj->GetString(); |
490 if (cs == FX_BSTRC("DeviceGray")) { | 490 if (cs == FX_BSTRC("DeviceGray")) { |
491 m_nComponents = 1; | 491 m_nComponents = 1; |
492 } else if (cs == FX_BSTRC("DeviceRGB")) { | 492 } else if (cs == FX_BSTRC("DeviceRGB")) { |
493 m_nComponents = 3; | 493 m_nComponents = 3; |
494 } else if (cs == FX_BSTRC("DeviceCMYK")) { | 494 } else if (cs == FX_BSTRC("DeviceCMYK")) { |
495 m_nComponents = 4; | 495 m_nComponents = 4; |
496 } | 496 } |
497 } | 497 } |
498 ValidateDictParam(); | 498 ValidateDictParam(); |
499 AllocCompData(); | |
500 return TRUE; | |
501 } | |
502 void CPDF_DIBSource::AllocCompData() | |
Tom Sepez
2014/09/03 16:59:11
maybe this is a bool so we can return FALSE if the
Tom Sepez
2014/09/03 16:59:11
nit: maybe AllocCompDataAndDecode().
Bo Xu
2014/09/03 18:10:15
I changed the function prototype to return m_pComp
Bo Xu
2014/09/03 18:10:15
Checked PDF reference, this struct contains decode
| |
503 { | |
499 m_pCompData = FX_Alloc(DIB_COMP_DATA, m_nComponents); | 504 m_pCompData = FX_Alloc(DIB_COMP_DATA, m_nComponents); |
Tom Sepez
2014/09/03 16:59:11
check return value for NULL?
Bo Xu
2014/09/03 18:10:16
Done.
| |
500 if (m_bpc == 0) { | |
501 return TRUE; | |
502 } | |
503 int max_data = (1 << m_bpc) - 1; | 505 int max_data = (1 << m_bpc) - 1; |
504 CPDF_Array* pDecode = m_pDict->GetArray(FX_BSTRC("Decode")); | 506 CPDF_Array* pDecode = m_pDict->GetArray(FX_BSTRC("Decode")); |
505 if (pDecode) { | 507 if (pDecode) { |
506 for (FX_DWORD i = 0; i < m_nComponents; i ++) { | 508 for (FX_DWORD i = 0; i < m_nComponents; i ++) { |
507 m_pCompData[i].m_DecodeMin = pDecode->GetNumber(i * 2); | 509 m_pCompData[i].m_DecodeMin = pDecode->GetNumber(i * 2); |
508 FX_FLOAT max = pDecode->GetNumber(i * 2 + 1); | 510 FX_FLOAT max = pDecode->GetNumber(i * 2 + 1); |
509 m_pCompData[i].m_DecodeStep = (max - m_pCompData[i].m_DecodeMin) / m ax_data; | 511 m_pCompData[i].m_DecodeStep = (max - m_pCompData[i].m_DecodeMin) / m ax_data; |
510 FX_FLOAT def_value, def_min, def_max; | 512 FX_FLOAT def_value, def_min, def_max; |
511 m_pColorSpace->GetDefaultValue(i, def_value, def_min, def_max); | 513 m_pColorSpace->GetDefaultValue(i, def_value, def_min, def_max); |
512 if (m_Family == PDFCS_INDEXED) { | 514 if (m_Family == PDFCS_INDEXED) { |
513 def_max = (FX_FLOAT)max_data; | 515 def_max = (FX_FLOAT)max_data; |
514 } | 516 } |
515 if (def_min != m_pCompData[i].m_DecodeMin || def_max != max) { | 517 if (def_min != m_pCompData[i].m_DecodeMin || def_max != max) { |
516 m_bDefaultDecode = FALSE; | 518 m_bDefaultDecode = FALSE; |
517 } | 519 } |
518 } | 520 } |
519 } else { | 521 } else { |
520 for (FX_DWORD i = 0; i < m_nComponents; i ++) { | 522 for (FX_DWORD i = 0; i < m_nComponents; i ++) { |
521 FX_FLOAT def_value; | 523 FX_FLOAT def_value; |
522 m_pColorSpace->GetDefaultValue(i, def_value, m_pCompData[i].m_Decode Min, m_pCompData[i].m_DecodeStep); | 524 m_pColorSpace->GetDefaultValue(i, def_value, m_pCompData[i].m_Decode Min, m_pCompData[i].m_DecodeStep); |
523 if (m_Family == PDFCS_INDEXED) { | 525 if (m_Family == PDFCS_INDEXED) { |
524 m_pCompData[i].m_DecodeStep = (FX_FLOAT)max_data; | 526 m_pCompData[i].m_DecodeStep = (FX_FLOAT)max_data; |
525 } | 527 } |
526 m_pCompData[i].m_DecodeStep = (m_pCompData[i].m_DecodeStep - m_pComp Data[i].m_DecodeMin) / max_data; | 528 m_pCompData[i].m_DecodeStep = (m_pCompData[i].m_DecodeStep - m_pComp Data[i].m_DecodeMin) / max_data; |
527 } | 529 } |
528 } | 530 } |
529 if (!m_pDict->KeyExist(FX_BSTRC("SMask"))) { | 531 if (!m_pDict->KeyExist(FX_BSTRC("SMask"))) { |
530 CPDF_Object* pMask = m_pDict->GetElementValue(FX_BSTRC("Mask")); | 532 CPDF_Object* pMask = m_pDict->GetElementValue(FX_BSTRC("Mask")); |
531 if (pMask == NULL) { | 533 if (pMask == NULL) { |
532 return TRUE; | 534 return; |
533 } | 535 } |
534 if (pMask->GetType() == PDFOBJ_ARRAY) { | 536 if (pMask->GetType() == PDFOBJ_ARRAY) { |
535 CPDF_Array* pArray = (CPDF_Array*)pMask; | 537 CPDF_Array* pArray = (CPDF_Array*)pMask; |
536 if (pArray->GetCount() >= m_nComponents * 2) | 538 if (pArray->GetCount() >= m_nComponents * 2) { |
537 for (FX_DWORD i = 0; i < m_nComponents * 2; i ++) { | 539 int min_num, max_num; |
Tom Sepez
2014/09/03 16:59:11
nit: these declarations can go inside the next lo
Bo Xu
2014/09/03 18:10:15
Done.
| |
538 if (i % 2) { | 540 for (FX_DWORD i = 0; i < m_nComponents; i++) { |
539 m_pCompData[i / 2].m_ColorKeyMax = pArray->GetInteger(i) ; | 541 min_num = pArray->GetInteger(i * 2); |
540 } else { | 542 max_num = pArray->GetInteger(i * 2 + 1); |
541 m_pCompData[i / 2].m_ColorKeyMin = pArray->GetInteger(i) ; | 543 m_pCompData[i].m_ColorKeyMin = FX_MAX(0, min_num); |
542 } | 544 m_pCompData[i].m_ColorKeyMax = FX_MIN((1 << m_bpc) - 1, max_ num); |
Tom Sepez
2014/09/03 16:59:11
I'd expect MIN to take two arguments?
Bo Xu
2014/09/03 18:10:15
I cleaned this a little bit.
| |
543 } | 545 } |
546 } | |
544 m_bColorKey = TRUE; | 547 m_bColorKey = TRUE; |
545 } | 548 } |
546 } | 549 } |
547 return TRUE; | |
548 } | 550 } |
549 ICodec_ScanlineDecoder* FPDFAPI_CreateFaxDecoder(FX_LPCBYTE src_buf, FX_DWORD sr c_size, int width, int height, | 551 ICodec_ScanlineDecoder* FPDFAPI_CreateFaxDecoder(FX_LPCBYTE src_buf, FX_DWORD sr c_size, int width, int height, |
550 const CPDF_Dictionary* pParams); | 552 const CPDF_Dictionary* pParams); |
551 ICodec_ScanlineDecoder* FPDFAPI_CreateFlateDecoder(FX_LPCBYTE src_buf, FX_DWORD src_size, int width, int height, | 553 ICodec_ScanlineDecoder* FPDFAPI_CreateFlateDecoder(FX_LPCBYTE src_buf, FX_DWORD src_size, int width, int height, |
552 int nComps, int bpc, const CPDF_Dictionary* pParams); | 554 int nComps, int bpc, const CPDF_Dictionary* pParams); |
553 int CPDF_DIBSource::CreateDecoder() | 555 int CPDF_DIBSource::CreateDecoder() |
554 { | 556 { |
555 const CFX_ByteString& decoder = m_pStreamAcc->GetImageDecoder(); | 557 const CFX_ByteString& decoder = m_pStreamAcc->GetImageDecoder(); |
556 if (decoder.IsEmpty()) { | 558 if (decoder.IsEmpty()) { |
557 return 1; | 559 return 1; |
558 } | 560 } |
559 if (m_bpc == 0) { | 561 if (m_bpc == 0) { |
560 return 0; | 562 return 0; |
561 } | 563 } |
562 FX_LPCBYTE src_data = m_pStreamAcc->GetData(); | 564 FX_LPCBYTE src_data = m_pStreamAcc->GetData(); |
563 FX_DWORD src_size = m_pStreamAcc->GetSize(); | 565 FX_DWORD src_size = m_pStreamAcc->GetSize(); |
564 const CPDF_Dictionary* pParams = m_pStreamAcc->GetImageParam(); | 566 const CPDF_Dictionary* pParams = m_pStreamAcc->GetImageParam(); |
565 if (decoder == FX_BSTRC("CCITTFaxDecode")) { | 567 if (decoder == FX_BSTRC("CCITTFaxDecode")) { |
566 m_pDecoder = FPDFAPI_CreateFaxDecoder(src_data, src_size, m_Width, m_Hei ght, pParams); | 568 m_pDecoder = FPDFAPI_CreateFaxDecoder(src_data, src_size, m_Width, m_Hei ght, pParams); |
567 } else if (decoder == FX_BSTRC("DCTDecode")) { | 569 } else if (decoder == FX_BSTRC("DCTDecode")) { |
568 m_pDecoder = CPDF_ModuleMgr::Get()->GetJpegModule()->CreateDecoder(src_d ata, src_size, m_Width, m_Height, | 570 m_pDecoder = CPDF_ModuleMgr::Get()->GetJpegModule()->CreateDecoder(src_d ata, src_size, m_Width, m_Height, |
569 m_nComponents, pParams ? pParams->GetInteger(FX_BSTR("Color Transform"), 1) : 1); | 571 m_nComponents, pParams ? pParams->GetInteger(FX_BSTR("Color Transform"), 1) : 1); |
570 if (NULL == m_pDecoder) { | 572 if (NULL == m_pDecoder) { |
571 FX_BOOL bTransform = FALSE; | 573 FX_BOOL bTransform = FALSE; |
572 int comps, bpc; | 574 int comps, bpc; |
573 ICodec_JpegModule* pJpegModule = CPDF_ModuleMgr::Get()->GetJpegModul e(); | 575 ICodec_JpegModule* pJpegModule = CPDF_ModuleMgr::Get()->GetJpegModul e(); |
574 if (pJpegModule->LoadInfo(src_data, src_size, m_Width, m_Height, com ps, bpc, bTransform)) { | 576 if (pJpegModule->LoadInfo(src_data, src_size, m_Width, m_Height, com ps, bpc, bTransform)) { |
575 m_nComponents = comps; | 577 if (m_nComponents != comps) { |
578 m_nComponents = comps; | |
579 FX_Free(m_pCompData); | |
580 AllocCompData(); | |
581 } | |
576 m_bpc = bpc; | 582 m_bpc = bpc; |
577 m_pDecoder = CPDF_ModuleMgr::Get()->GetJpegModule()->CreateDecod er(src_data, src_size, m_Width, m_Height, | 583 m_pDecoder = CPDF_ModuleMgr::Get()->GetJpegModule()->CreateDecod er(src_data, src_size, m_Width, m_Height, |
578 m_nComponents, bTransform); | 584 m_nComponents, bTransform); |
579 } | 585 } |
580 } | 586 } |
581 } else if (decoder == FX_BSTRC("FlateDecode")) { | 587 } else if (decoder == FX_BSTRC("FlateDecode")) { |
582 m_pDecoder = FPDFAPI_CreateFlateDecoder(src_data, src_size, m_Width, m_H eight, m_nComponents, m_bpc, pParams); | 588 m_pDecoder = FPDFAPI_CreateFlateDecoder(src_data, src_size, m_Width, m_H eight, m_nComponents, m_bpc, pParams); |
583 } else if (decoder == FX_BSTRC("JPXDecode")) { | 589 } else if (decoder == FX_BSTRC("JPXDecode")) { |
584 LoadJpxBitmap(); | 590 LoadJpxBitmap(); |
585 return m_pCachedBitmap != NULL ? 1 : 0; | 591 return m_pCachedBitmap != NULL ? 1 : 0; |
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1152 } | 1158 } |
1153 return m_pMaskedLine; | 1159 return m_pMaskedLine; |
1154 } | 1160 } |
1155 return m_pLineBuf; | 1161 return m_pLineBuf; |
1156 } | 1162 } |
1157 if (m_bColorKey) { | 1163 if (m_bColorKey) { |
1158 if (m_nComponents == 3 && m_bpc == 8) { | 1164 if (m_nComponents == 3 && m_bpc == 8) { |
1159 FX_LPBYTE alpha_channel = m_pMaskedLine + 3; | 1165 FX_LPBYTE alpha_channel = m_pMaskedLine + 3; |
1160 for (int col = 0; col < m_Width; col ++) { | 1166 for (int col = 0; col < m_Width; col ++) { |
1161 FX_LPCBYTE pPixel = pSrcLine + col * 3; | 1167 FX_LPCBYTE pPixel = pSrcLine + col * 3; |
1162 alpha_channel[col * 4] = (pPixel[0] < m_pCompData[0].m_ColorKeyM in || | 1168 alpha_channel[col * 4] = (pPixel[0] < m_pCompData[0].m_ColorKeyM in || pPixel[0] > m_pCompData[0].m_ColorKeyMax || |
1163 pPixel[0] > m_pCompData[0].m_ColorKeyM ax || | |
1164 pPixel[1] < m_pCompData[1].m_ColorKeyM in || pPixel[1] > m_pCompData[1].m_ColorKeyMax || | 1169 pPixel[1] < m_pCompData[1].m_ColorKeyM in || pPixel[1] > m_pCompData[1].m_ColorKeyMax || |
1165 pPixel[2] < m_pCompData[2].m_ColorKeyM in || pPixel[2] > m_pCompData[2].m_ColorKeyMax) ? 0xff : 0; | 1170 pPixel[2] < m_pCompData[2].m_ColorKeyM in || pPixel[2] > m_pCompData[2].m_ColorKeyMax) ? 0xff : 0; |
1166 } | 1171 } |
1167 } else { | 1172 } else { |
1168 FXSYS_memset8(m_pMaskedLine, 0xff, m_Pitch); | 1173 FXSYS_memset8(m_pMaskedLine, 0xff, m_Pitch); |
1169 } | 1174 } |
1170 } | 1175 } |
1171 if (m_pColorSpace) { | 1176 if (m_pColorSpace) { |
1172 TranslateScanline24bpp(m_pLineBuf, pSrcLine); | 1177 TranslateScanline24bpp(m_pLineBuf, pSrcLine); |
1173 pSrcLine = m_pLineBuf; | 1178 pSrcLine = m_pLineBuf; |
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1545 if (!m_bCached) { | 1550 if (!m_bCached) { |
1546 if (m_pBitmap) { | 1551 if (m_pBitmap) { |
1547 delete m_pBitmap; | 1552 delete m_pBitmap; |
1548 m_pBitmap = NULL; | 1553 m_pBitmap = NULL; |
1549 } | 1554 } |
1550 if (m_pMask) { | 1555 if (m_pMask) { |
1551 delete m_pMask; | 1556 delete m_pMask; |
1552 } | 1557 } |
1553 } | 1558 } |
1554 } | 1559 } |
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