| // 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 <algorithm> |
| #include <limits> |
| #include <memory> |
| #include <utility> |
| #include <vector> |
| |
| #include "core/fpdfapi/page/cpdf_colorspace.h" |
| #include "core/fxcodec/codec/cjpx_decoder.h" |
| #include "core/fxcodec/codec/codec_int.h" |
| #include "core/fxcodec/fx_codec.h" |
| #include "core/fxcrt/fx_safe_types.h" |
| #include "third_party/base/ptr_util.h" |
| #include "third_party/libopenjpeg20/openjpeg.h" |
| |
| #if defined(USE_SYSTEM_LCMS2) |
| #include <lcms2.h> |
| #else |
| #include "third_party/lcms2-2.6/include/lcms2.h" |
| #endif |
| |
| static void fx_error_callback(const char* msg, void* client_data) { |
| (void)client_data; |
| } |
| static void fx_warning_callback(const char* msg, void* client_data) { |
| (void)client_data; |
| } |
| static void fx_info_callback(const char* msg, void* client_data) { |
| (void)client_data; |
| } |
| |
| OPJ_SIZE_T opj_read_from_memory(void* p_buffer, |
| OPJ_SIZE_T nb_bytes, |
| void* p_user_data) { |
| DecodeData* srcData = static_cast<DecodeData*>(p_user_data); |
| if (!srcData || !srcData->src_data || srcData->src_size == 0) { |
| return static_cast<OPJ_SIZE_T>(-1); |
| } |
| // Reads at EOF return an error code. |
| if (srcData->offset >= srcData->src_size) { |
| return static_cast<OPJ_SIZE_T>(-1); |
| } |
| OPJ_SIZE_T bufferLength = srcData->src_size - srcData->offset; |
| OPJ_SIZE_T readlength = nb_bytes < bufferLength ? nb_bytes : bufferLength; |
| memcpy(p_buffer, &srcData->src_data[srcData->offset], readlength); |
| srcData->offset += readlength; |
| return readlength; |
| } |
| |
| OPJ_OFF_T opj_skip_from_memory(OPJ_OFF_T nb_bytes, void* p_user_data) { |
| DecodeData* srcData = static_cast<DecodeData*>(p_user_data); |
| if (!srcData || !srcData->src_data || srcData->src_size == 0) { |
| return static_cast<OPJ_OFF_T>(-1); |
| } |
| // Offsets are signed and may indicate a negative skip. Do not support this |
| // because of the strange return convention where either bytes skipped or |
| // -1 is returned. Following that convention, a successful relative seek of |
| // -1 bytes would be required to to give the same result as the error case. |
| if (nb_bytes < 0) { |
| return static_cast<OPJ_OFF_T>(-1); |
| } |
| // FIXME: use std::make_unsigned<OPJ_OFF_T>::type once c++11 lib is OK'd. |
| uint64_t unsignedNbBytes = static_cast<uint64_t>(nb_bytes); |
| // Additionally, the offset may take us beyond the range of a size_t (e.g. |
| // 32-bit platforms). If so, just clamp at EOF. |
| if (unsignedNbBytes > |
| std::numeric_limits<OPJ_SIZE_T>::max() - srcData->offset) { |
| srcData->offset = srcData->src_size; |
| } else { |
| OPJ_SIZE_T checkedNbBytes = static_cast<OPJ_SIZE_T>(unsignedNbBytes); |
| // Otherwise, mimic fseek() semantics to always succeed, even past EOF, |
| // clamping at EOF. We can get away with this since we don't actually |
| // provide negative relative skips from beyond EOF back to inside the |
| // data, which would be the only reason to need to know exactly how far |
| // beyond EOF we are. |
| srcData->offset = |
| std::min(srcData->offset + checkedNbBytes, srcData->src_size); |
| } |
| return nb_bytes; |
| } |
| |
| OPJ_BOOL opj_seek_from_memory(OPJ_OFF_T nb_bytes, void* p_user_data) { |
| DecodeData* srcData = static_cast<DecodeData*>(p_user_data); |
| if (!srcData || !srcData->src_data || srcData->src_size == 0) { |
| return OPJ_FALSE; |
| } |
| // Offsets are signed and may indicate a negative position, which would |
| // be before the start of the file. Do not support this. |
| if (nb_bytes < 0) { |
| return OPJ_FALSE; |
| } |
| // FIXME: use std::make_unsigned<OPJ_OFF_T>::type once c++11 lib is OK'd. |
| uint64_t unsignedNbBytes = static_cast<uint64_t>(nb_bytes); |
| // Additionally, the offset may take us beyond the range of a size_t (e.g. |
| // 32-bit platforms). If so, just clamp at EOF. |
| if (unsignedNbBytes > std::numeric_limits<OPJ_SIZE_T>::max()) { |
| srcData->offset = srcData->src_size; |
| } else { |
| OPJ_SIZE_T checkedNbBytes = static_cast<OPJ_SIZE_T>(nb_bytes); |
| // Otherwise, mimic fseek() semantics to always succeed, even past EOF, |
| // again clamping at EOF. |
| srcData->offset = std::min(checkedNbBytes, srcData->src_size); |
| } |
| return OPJ_TRUE; |
| } |
| opj_stream_t* fx_opj_stream_create_memory_stream(DecodeData* data, |
| OPJ_SIZE_T p_size, |
| OPJ_BOOL p_is_read_stream) { |
| opj_stream_t* l_stream = 00; |
| if (!data || !data->src_data || data->src_size <= 0) { |
| return nullptr; |
| } |
| l_stream = opj_stream_create(p_size, p_is_read_stream); |
| if (!l_stream) { |
| return nullptr; |
| } |
| opj_stream_set_user_data(l_stream, data, nullptr); |
| opj_stream_set_user_data_length(l_stream, data->src_size); |
| opj_stream_set_read_function(l_stream, opj_read_from_memory); |
| opj_stream_set_skip_function(l_stream, opj_skip_from_memory); |
| opj_stream_set_seek_function(l_stream, opj_seek_from_memory); |
| return l_stream; |
| } |
| static void sycc_to_rgb(int offset, |
| int upb, |
| int y, |
| int cb, |
| int cr, |
| int* out_r, |
| int* out_g, |
| int* out_b) { |
| int r, g, b; |
| cb -= offset; |
| cr -= offset; |
| r = y + (int)(1.402 * (float)cr); |
| if (r < 0) { |
| r = 0; |
| } else if (r > upb) { |
| r = upb; |
| } |
| *out_r = r; |
| g = y - (int)(0.344 * (float)cb + 0.714 * (float)cr); |
| if (g < 0) { |
| g = 0; |
| } else if (g > upb) { |
| g = upb; |
| } |
| *out_g = g; |
| b = y + (int)(1.772 * (float)cb); |
| if (b < 0) { |
| b = 0; |
| } else if (b > upb) { |
| b = upb; |
| } |
| *out_b = b; |
| } |
| |
| static void sycc444_to_rgb(opj_image_t* img) { |
| int prec = img->comps[0].prec; |
| int offset = 1 << (prec - 1); |
| int upb = (1 << prec) - 1; |
| OPJ_UINT32 maxw = |
| std::min({img->comps[0].w, img->comps[1].w, img->comps[2].w}); |
| OPJ_UINT32 maxh = |
| std::min({img->comps[0].h, img->comps[1].h, img->comps[2].h}); |
| FX_SAFE_SIZE_T max_size = maxw; |
| max_size *= maxh; |
| if (!max_size.IsValid()) |
| return; |
| |
| const int* y = img->comps[0].data; |
| const int* cb = img->comps[1].data; |
| const int* cr = img->comps[2].data; |
| if (!y || !cb || !cr) |
| return; |
| |
| int* r = FX_Alloc(int, max_size.ValueOrDie()); |
| int* g = FX_Alloc(int, max_size.ValueOrDie()); |
| int* b = FX_Alloc(int, max_size.ValueOrDie()); |
| int* d0 = r; |
| int* d1 = g; |
| int* d2 = b; |
| for (size_t i = 0; i < max_size.ValueOrDie(); ++i) { |
| sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b); |
| ++y; |
| ++cb; |
| ++cr; |
| ++r; |
| ++g; |
| ++b; |
| } |
| FX_Free(img->comps[0].data); |
| FX_Free(img->comps[1].data); |
| FX_Free(img->comps[2].data); |
| img->comps[0].data = d0; |
| img->comps[1].data = d1; |
| img->comps[2].data = d2; |
| } |
| |
| static bool sycc420_422_size_is_valid(opj_image_t* img) { |
| return (img && img->comps[0].w != std::numeric_limits<OPJ_UINT32>::max() && |
| (img->comps[0].w + 1) / 2 == img->comps[1].w && |
| img->comps[1].w == img->comps[2].w && |
| img->comps[1].h == img->comps[2].h); |
| } |
| static bool sycc420_size_is_valid(opj_image_t* img) { |
| return (sycc420_422_size_is_valid(img) && |
| img->comps[0].h != std::numeric_limits<OPJ_UINT32>::max() && |
| (img->comps[0].h + 1) / 2 == img->comps[1].h); |
| } |
| static bool sycc422_size_is_valid(opj_image_t* img) { |
| return (sycc420_422_size_is_valid(img) && img->comps[0].h == img->comps[1].h); |
| } |
| static void sycc422_to_rgb(opj_image_t* img) { |
| if (!sycc422_size_is_valid(img)) |
| return; |
| |
| int prec = img->comps[0].prec; |
| if (prec <= 0 || prec >= 32) |
| return; |
| |
| int offset = 1 << (prec - 1); |
| int upb = (1 << prec) - 1; |
| |
| OPJ_UINT32 maxw = img->comps[0].w; |
| OPJ_UINT32 maxh = img->comps[0].h; |
| FX_SAFE_SIZE_T max_size = maxw; |
| max_size *= maxh; |
| if (!max_size.IsValid()) |
| return; |
| |
| const int* y = img->comps[0].data; |
| const int* cb = img->comps[1].data; |
| const int* cr = img->comps[2].data; |
| if (!y || !cb || !cr) |
| return; |
| |
| int *d0, *d1, *d2, *r, *g, *b; |
| d0 = r = FX_Alloc(int, max_size.ValueOrDie()); |
| d1 = g = FX_Alloc(int, max_size.ValueOrDie()); |
| d2 = b = FX_Alloc(int, max_size.ValueOrDie()); |
| for (uint32_t i = 0; i < maxh; ++i) { |
| OPJ_UINT32 j; |
| for (j = 0; j < (maxw & ~static_cast<OPJ_UINT32>(1)); j += 2) { |
| sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b); |
| ++y; |
| ++r; |
| ++g; |
| ++b; |
| sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b); |
| ++y; |
| ++r; |
| ++g; |
| ++b; |
| ++cb; |
| ++cr; |
| } |
| if (j < maxw) { |
| sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b); |
| ++y; |
| ++r; |
| ++g; |
| ++b; |
| ++cb; |
| ++cr; |
| } |
| } |
| FX_Free(img->comps[0].data); |
| img->comps[0].data = d0; |
| FX_Free(img->comps[1].data); |
| img->comps[1].data = d1; |
| FX_Free(img->comps[2].data); |
| img->comps[2].data = d2; |
| img->comps[1].w = maxw; |
| img->comps[1].h = maxh; |
| img->comps[2].w = maxw; |
| img->comps[2].h = maxh; |
| img->comps[1].dx = img->comps[0].dx; |
| img->comps[2].dx = img->comps[0].dx; |
| img->comps[1].dy = img->comps[0].dy; |
| img->comps[2].dy = img->comps[0].dy; |
| } |
| static bool sycc420_must_extend_cbcr(OPJ_UINT32 y, OPJ_UINT32 cbcr) { |
| return (y & 1) && (cbcr == y / 2); |
| } |
| void sycc420_to_rgb(opj_image_t* img) { |
| if (!sycc420_size_is_valid(img)) |
| return; |
| |
| OPJ_UINT32 prec = img->comps[0].prec; |
| if (!prec) |
| return; |
| OPJ_UINT32 offset = 1 << (prec - 1); |
| OPJ_UINT32 upb = (1 << prec) - 1; |
| OPJ_UINT32 yw = img->comps[0].w; |
| OPJ_UINT32 yh = img->comps[0].h; |
| OPJ_UINT32 cbw = img->comps[1].w; |
| OPJ_UINT32 cbh = img->comps[1].h; |
| OPJ_UINT32 crw = img->comps[2].w; |
| bool extw = sycc420_must_extend_cbcr(yw, cbw); |
| bool exth = sycc420_must_extend_cbcr(yh, cbh); |
| FX_SAFE_UINT32 safeSize = yw; |
| safeSize *= yh; |
| if (!safeSize.IsValid()) |
| return; |
| int* r = FX_Alloc(int, safeSize.ValueOrDie()); |
| int* g = FX_Alloc(int, safeSize.ValueOrDie()); |
| int* b = FX_Alloc(int, safeSize.ValueOrDie()); |
| int* d0 = r; |
| int* d1 = g; |
| int* d2 = b; |
| const int* y = img->comps[0].data; |
| const int* cb = img->comps[1].data; |
| const int* cr = img->comps[2].data; |
| if (!y || !cb || !cr) |
| return; |
| |
| const int* ny = nullptr; |
| int* nr = nullptr; |
| int* ng = nullptr; |
| int* nb = nullptr; |
| OPJ_UINT32 i = 0; |
| OPJ_UINT32 j = 0; |
| for (i = 0; i < (yh & ~(OPJ_UINT32)1); i += 2) { |
| ny = y + yw; |
| nr = r + yw; |
| ng = g + yw; |
| nb = b + yw; |
| for (j = 0; j < (yw & ~(OPJ_UINT32)1); j += 2) { |
| sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b); |
| ++y; |
| ++r; |
| ++g; |
| ++b; |
| sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b); |
| ++y; |
| ++r; |
| ++g; |
| ++b; |
| sycc_to_rgb(offset, upb, *ny, *cb, *cr, nr, ng, nb); |
| ++ny; |
| ++nr; |
| ++ng; |
| ++nb; |
| sycc_to_rgb(offset, upb, *ny, *cb, *cr, nr, ng, nb); |
| ++ny; |
| ++nr; |
| ++ng; |
| ++nb; |
| ++cb; |
| ++cr; |
| } |
| if (j < yw) { |
| if (extw) { |
| --cb; |
| --cr; |
| } |
| sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b); |
| ++y; |
| ++r; |
| ++g; |
| ++b; |
| sycc_to_rgb(offset, upb, *ny, *cb, *cr, nr, ng, nb); |
| ++ny; |
| ++nr; |
| ++ng; |
| ++nb; |
| ++cb; |
| ++cr; |
| } |
| y += yw; |
| r += yw; |
| g += yw; |
| b += yw; |
| } |
| if (i < yh) { |
| if (exth) { |
| cb -= cbw; |
| cr -= crw; |
| } |
| for (j = 0; j < (yw & ~(OPJ_UINT32)1); j += 2) { |
| sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b); |
| ++y; |
| ++r; |
| ++g; |
| ++b; |
| sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b); |
| ++y; |
| ++r; |
| ++g; |
| ++b; |
| ++cb; |
| ++cr; |
| } |
| if (j < yw) { |
| if (extw) { |
| --cb; |
| --cr; |
| } |
| sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b); |
| } |
| } |
| |
| FX_Free(img->comps[0].data); |
| img->comps[0].data = d0; |
| FX_Free(img->comps[1].data); |
| img->comps[1].data = d1; |
| FX_Free(img->comps[2].data); |
| img->comps[2].data = d2; |
| img->comps[1].w = yw; |
| img->comps[1].h = yh; |
| img->comps[2].w = yw; |
| img->comps[2].h = yh; |
| img->comps[1].w = yw; |
| img->comps[1].h = yh; |
| img->comps[2].w = yw; |
| img->comps[2].h = yh; |
| img->comps[1].dx = img->comps[0].dx; |
| img->comps[2].dx = img->comps[0].dx; |
| img->comps[1].dy = img->comps[0].dy; |
| img->comps[2].dy = img->comps[0].dy; |
| } |
| void color_sycc_to_rgb(opj_image_t* img) { |
| if (img->numcomps < 3) { |
| img->color_space = OPJ_CLRSPC_GRAY; |
| return; |
| } |
| if ((img->comps[0].dx == 1) && (img->comps[1].dx == 2) && |
| (img->comps[2].dx == 2) && (img->comps[0].dy == 1) && |
| (img->comps[1].dy == 2) && (img->comps[2].dy == 2)) { |
| sycc420_to_rgb(img); |
| } else if ((img->comps[0].dx == 1) && (img->comps[1].dx == 2) && |
| (img->comps[2].dx == 2) && (img->comps[0].dy == 1) && |
| (img->comps[1].dy == 1) && (img->comps[2].dy == 1)) { |
| sycc422_to_rgb(img); |
| } else if ((img->comps[0].dx == 1) && (img->comps[1].dx == 1) && |
| (img->comps[2].dx == 1) && (img->comps[0].dy == 1) && |
| (img->comps[1].dy == 1) && (img->comps[2].dy == 1)) { |
| sycc444_to_rgb(img); |
| } else { |
| return; |
| } |
| img->color_space = OPJ_CLRSPC_SRGB; |
| } |
| void color_apply_icc_profile(opj_image_t* image) { |
| cmsHPROFILE out_prof; |
| cmsUInt32Number in_type; |
| cmsUInt32Number out_type; |
| int* r; |
| int* g; |
| int* b; |
| int max; |
| cmsHPROFILE in_prof = |
| cmsOpenProfileFromMem(image->icc_profile_buf, image->icc_profile_len); |
| if (!in_prof) { |
| return; |
| } |
| cmsColorSpaceSignature out_space = cmsGetColorSpace(in_prof); |
| cmsUInt32Number intent = cmsGetHeaderRenderingIntent(in_prof); |
| int max_w = (int)image->comps[0].w; |
| int max_h = (int)image->comps[0].h; |
| int prec = (int)image->comps[0].prec; |
| OPJ_COLOR_SPACE oldspace = image->color_space; |
| if (out_space == cmsSigRgbData) { |
| if (prec <= 8) { |
| in_type = TYPE_RGB_8; |
| out_type = TYPE_RGB_8; |
| } else { |
| in_type = TYPE_RGB_16; |
| out_type = TYPE_RGB_16; |
| } |
| out_prof = cmsCreate_sRGBProfile(); |
| image->color_space = OPJ_CLRSPC_SRGB; |
| } else if (out_space == cmsSigGrayData) { |
| if (prec <= 8) { |
| in_type = TYPE_GRAY_8; |
| out_type = TYPE_RGB_8; |
| } else { |
| in_type = TYPE_GRAY_16; |
| out_type = TYPE_RGB_16; |
| } |
| out_prof = cmsCreate_sRGBProfile(); |
| image->color_space = OPJ_CLRSPC_SRGB; |
| } else if (out_space == cmsSigYCbCrData) { |
| in_type = TYPE_YCbCr_16; |
| out_type = TYPE_RGB_16; |
| out_prof = cmsCreate_sRGBProfile(); |
| image->color_space = OPJ_CLRSPC_SRGB; |
| } else { |
| return; |
| } |
| cmsHTRANSFORM transform = |
| cmsCreateTransform(in_prof, in_type, out_prof, out_type, intent, 0); |
| cmsCloseProfile(in_prof); |
| cmsCloseProfile(out_prof); |
| if (!transform) { |
| image->color_space = oldspace; |
| return; |
| } |
| if (image->numcomps > 2) { |
| if (prec <= 8) { |
| unsigned char *inbuf, *outbuf, *in, *out; |
| max = max_w * max_h; |
| cmsUInt32Number nr_samples = max * 3 * sizeof(unsigned char); |
| in = inbuf = FX_Alloc(unsigned char, nr_samples); |
| out = outbuf = FX_Alloc(unsigned char, nr_samples); |
| r = image->comps[0].data; |
| g = image->comps[1].data; |
| b = image->comps[2].data; |
| for (int i = 0; i < max; ++i) { |
| *in++ = (unsigned char)*r++; |
| *in++ = (unsigned char)*g++; |
| *in++ = (unsigned char)*b++; |
| } |
| cmsDoTransform(transform, inbuf, outbuf, (cmsUInt32Number)max); |
| r = image->comps[0].data; |
| g = image->comps[1].data; |
| b = image->comps[2].data; |
| for (int i = 0; i < max; ++i) { |
| *r++ = (int)*out++; |
| *g++ = (int)*out++; |
| *b++ = (int)*out++; |
| } |
| FX_Free(inbuf); |
| FX_Free(outbuf); |
| } else { |
| unsigned short *inbuf, *outbuf, *in, *out; |
| max = max_w * max_h; |
| cmsUInt32Number nr_samples = max * 3 * sizeof(unsigned short); |
| in = inbuf = FX_Alloc(unsigned short, nr_samples); |
| out = outbuf = FX_Alloc(unsigned short, nr_samples); |
| r = image->comps[0].data; |
| g = image->comps[1].data; |
| b = image->comps[2].data; |
| for (int i = 0; i < max; ++i) { |
| *in++ = (unsigned short)*r++; |
| *in++ = (unsigned short)*g++; |
| *in++ = (unsigned short)*b++; |
| } |
| cmsDoTransform(transform, inbuf, outbuf, (cmsUInt32Number)max); |
| r = image->comps[0].data; |
| g = image->comps[1].data; |
| b = image->comps[2].data; |
| for (int i = 0; i < max; ++i) { |
| *r++ = (int)*out++; |
| *g++ = (int)*out++; |
| *b++ = (int)*out++; |
| } |
| FX_Free(inbuf); |
| FX_Free(outbuf); |
| } |
| } else { |
| unsigned char *in, *inbuf, *out, *outbuf; |
| max = max_w * max_h; |
| cmsUInt32Number nr_samples = |
| (cmsUInt32Number)max * 3 * sizeof(unsigned char); |
| in = inbuf = FX_Alloc(unsigned char, nr_samples); |
| out = outbuf = FX_Alloc(unsigned char, nr_samples); |
| image->comps = (opj_image_comp_t*)realloc( |
| image->comps, (image->numcomps + 2) * sizeof(opj_image_comp_t)); |
| if (image->numcomps == 2) { |
| image->comps[3] = image->comps[1]; |
| } |
| image->comps[1] = image->comps[0]; |
| image->comps[2] = image->comps[0]; |
| image->comps[1].data = FX_Alloc(int, (size_t)max); |
| memset(image->comps[1].data, 0, sizeof(int) * (size_t)max); |
| image->comps[2].data = FX_Alloc(int, (size_t)max); |
| memset(image->comps[2].data, 0, sizeof(int) * (size_t)max); |
| image->numcomps += 2; |
| r = image->comps[0].data; |
| for (int i = 0; i < max; ++i) { |
| *in++ = (unsigned char)*r++; |
| } |
| cmsDoTransform(transform, inbuf, outbuf, (cmsUInt32Number)max); |
| r = image->comps[0].data; |
| g = image->comps[1].data; |
| b = image->comps[2].data; |
| for (int i = 0; i < max; ++i) { |
| *r++ = (int)*out++; |
| *g++ = (int)*out++; |
| *b++ = (int)*out++; |
| } |
| FX_Free(inbuf); |
| FX_Free(outbuf); |
| } |
| cmsDeleteTransform(transform); |
| } |
| void color_apply_conversion(opj_image_t* image) { |
| int* row; |
| int enumcs, numcomps; |
| numcomps = image->numcomps; |
| if (numcomps < 3) { |
| return; |
| } |
| row = (int*)image->icc_profile_buf; |
| enumcs = row[0]; |
| if (enumcs == 14) { |
| int *L, *a, *b, *red, *green, *blue, *src0, *src1, *src2; |
| double rl, ol, ra, oa, rb, ob, prec0, prec1, prec2; |
| double minL, maxL, mina, maxa, minb, maxb; |
| unsigned int default_type; |
| unsigned int i, max; |
| cmsHPROFILE in, out; |
| cmsHTRANSFORM transform; |
| cmsUInt16Number RGB[3]; |
| cmsCIELab Lab; |
| in = cmsCreateLab4Profile(nullptr); |
| out = cmsCreate_sRGBProfile(); |
| transform = cmsCreateTransform(in, TYPE_Lab_DBL, out, TYPE_RGB_16, |
| INTENT_PERCEPTUAL, 0); |
| cmsCloseProfile(in); |
| cmsCloseProfile(out); |
| if (!transform) { |
| return; |
| } |
| prec0 = (double)image->comps[0].prec; |
| prec1 = (double)image->comps[1].prec; |
| prec2 = (double)image->comps[2].prec; |
| default_type = row[1]; |
| if (default_type == 0x44454600) { |
| rl = 100; |
| ra = 170; |
| rb = 200; |
| ol = 0; |
| oa = pow(2, prec1 - 1); |
| ob = pow(2, prec2 - 2) + pow(2, prec2 - 3); |
| } else { |
| rl = row[2]; |
| ra = row[4]; |
| rb = row[6]; |
| ol = row[3]; |
| oa = row[5]; |
| ob = row[7]; |
| } |
| L = src0 = image->comps[0].data; |
| a = src1 = image->comps[1].data; |
| b = src2 = image->comps[2].data; |
| max = image->comps[0].w * image->comps[0].h; |
| red = FX_Alloc(int, max); |
| image->comps[0].data = red; |
| green = FX_Alloc(int, max); |
| image->comps[1].data = green; |
| blue = FX_Alloc(int, max); |
| image->comps[2].data = blue; |
| minL = -(rl * ol) / (pow(2, prec0) - 1); |
| maxL = minL + rl; |
| mina = -(ra * oa) / (pow(2, prec1) - 1); |
| maxa = mina + ra; |
| minb = -(rb * ob) / (pow(2, prec2) - 1); |
| maxb = minb + rb; |
| for (i = 0; i < max; ++i) { |
| Lab.L = minL + (double)(*L) * (maxL - minL) / (pow(2, prec0) - 1); |
| ++L; |
| Lab.a = mina + (double)(*a) * (maxa - mina) / (pow(2, prec1) - 1); |
| ++a; |
| Lab.b = minb + (double)(*b) * (maxb - minb) / (pow(2, prec2) - 1); |
| ++b; |
| cmsDoTransform(transform, &Lab, RGB, 1); |
| *red++ = RGB[0]; |
| *green++ = RGB[1]; |
| *blue++ = RGB[2]; |
| } |
| cmsDeleteTransform(transform); |
| FX_Free(src0); |
| FX_Free(src1); |
| FX_Free(src2); |
| image->color_space = OPJ_CLRSPC_SRGB; |
| image->comps[0].prec = 16; |
| image->comps[1].prec = 16; |
| image->comps[2].prec = 16; |
| return; |
| } |
| } |
| |
| CJPX_Decoder::CJPX_Decoder(CPDF_ColorSpace* cs) |
| : image(nullptr), l_codec(nullptr), l_stream(nullptr), m_ColorSpace(cs) {} |
| |
| CJPX_Decoder::~CJPX_Decoder() { |
| if (l_codec) { |
| opj_destroy_codec(l_codec); |
| } |
| if (l_stream) { |
| opj_stream_destroy(l_stream); |
| } |
| if (image) { |
| opj_image_destroy(image); |
| } |
| } |
| |
| bool CJPX_Decoder::Init(const unsigned char* src_data, uint32_t src_size) { |
| static const unsigned char szJP2Header[] = { |
| 0x00, 0x00, 0x00, 0x0c, 0x6a, 0x50, 0x20, 0x20, 0x0d, 0x0a, 0x87, 0x0a}; |
| if (!src_data || src_size < sizeof(szJP2Header)) |
| return false; |
| |
| image = nullptr; |
| m_SrcData = src_data; |
| m_SrcSize = src_size; |
| DecodeData srcData(const_cast<unsigned char*>(src_data), src_size); |
| l_stream = fx_opj_stream_create_memory_stream(&srcData, |
| OPJ_J2K_STREAM_CHUNK_SIZE, 1); |
| if (!l_stream) { |
| return false; |
| } |
| opj_dparameters_t parameters; |
| opj_set_default_decoder_parameters(¶meters); |
| parameters.decod_format = 0; |
| parameters.cod_format = 3; |
| if (memcmp(m_SrcData, szJP2Header, sizeof(szJP2Header)) == 0) { |
| l_codec = opj_create_decompress(OPJ_CODEC_JP2); |
| parameters.decod_format = 1; |
| } else { |
| l_codec = opj_create_decompress(OPJ_CODEC_J2K); |
| } |
| if (!l_codec) { |
| return false; |
| } |
| if (m_ColorSpace && m_ColorSpace->GetFamily() == PDFCS_INDEXED) |
| parameters.flags |= OPJ_DPARAMETERS_IGNORE_PCLR_CMAP_CDEF_FLAG; |
| opj_set_info_handler(l_codec, fx_info_callback, 00); |
| opj_set_warning_handler(l_codec, fx_warning_callback, 00); |
| opj_set_error_handler(l_codec, fx_error_callback, 00); |
| if (!opj_setup_decoder(l_codec, ¶meters)) { |
| return false; |
| } |
| if (!opj_read_header(l_stream, l_codec, &image)) { |
| image = nullptr; |
| return false; |
| } |
| image->pdfium_use_colorspace = !!m_ColorSpace; |
| |
| if (!parameters.nb_tile_to_decode) { |
| if (!opj_set_decode_area(l_codec, image, parameters.DA_x0, parameters.DA_y0, |
| parameters.DA_x1, parameters.DA_y1)) { |
| opj_image_destroy(image); |
| image = nullptr; |
| return false; |
| } |
| if (!(opj_decode(l_codec, l_stream, image) && |
| opj_end_decompress(l_codec, l_stream))) { |
| opj_image_destroy(image); |
| image = nullptr; |
| return false; |
| } |
| } else { |
| if (!opj_get_decoded_tile(l_codec, l_stream, image, |
| parameters.tile_index)) { |
| return false; |
| } |
| } |
| opj_stream_destroy(l_stream); |
| l_stream = nullptr; |
| if (image->color_space != OPJ_CLRSPC_SYCC && image->numcomps == 3 && |
| image->comps[0].dx == image->comps[0].dy && image->comps[1].dx != 1) { |
| image->color_space = OPJ_CLRSPC_SYCC; |
| } else if (image->numcomps <= 2) { |
| image->color_space = OPJ_CLRSPC_GRAY; |
| } |
| if (image->color_space == OPJ_CLRSPC_SYCC) { |
| color_sycc_to_rgb(image); |
| } |
| if (image->icc_profile_buf) { |
| FX_Free(image->icc_profile_buf); |
| image->icc_profile_buf = nullptr; |
| image->icc_profile_len = 0; |
| } |
| if (!image) { |
| return false; |
| } |
| return true; |
| } |
| |
| void CJPX_Decoder::GetInfo(uint32_t* width, |
| uint32_t* height, |
| uint32_t* components) { |
| *width = (uint32_t)image->x1; |
| *height = (uint32_t)image->y1; |
| *components = (uint32_t)image->numcomps; |
| } |
| |
| bool CJPX_Decoder::Decode(uint8_t* dest_buf, |
| int pitch, |
| const std::vector<uint8_t>& offsets) { |
| if (image->comps[0].w != image->x1 || image->comps[0].h != image->y1) |
| return false; |
| |
| if (pitch<(int)(image->comps[0].w * 8 * image->numcomps + 31)>> 5 << 2) |
| return false; |
| |
| memset(dest_buf, 0xff, image->y1 * pitch); |
| std::vector<uint8_t*> channel_bufs(image->numcomps); |
| std::vector<int> adjust_comps(image->numcomps); |
| for (uint32_t i = 0; i < image->numcomps; i++) { |
| channel_bufs[i] = dest_buf + offsets[i]; |
| adjust_comps[i] = image->comps[i].prec - 8; |
| if (i > 0) { |
| if (image->comps[i].dx != image->comps[i - 1].dx || |
| image->comps[i].dy != image->comps[i - 1].dy || |
| image->comps[i].prec != image->comps[i - 1].prec) { |
| return false; |
| } |
| } |
| } |
| int width = image->comps[0].w; |
| int height = image->comps[0].h; |
| for (uint32_t channel = 0; channel < image->numcomps; ++channel) { |
| uint8_t* pChannel = channel_bufs[channel]; |
| if (adjust_comps[channel] < 0) { |
| for (int row = 0; row < height; ++row) { |
| uint8_t* pScanline = pChannel + row * pitch; |
| for (int col = 0; col < width; ++col) { |
| uint8_t* pPixel = pScanline + col * image->numcomps; |
| if (!image->comps[channel].data) |
| continue; |
| |
| int src = image->comps[channel].data[row * width + col]; |
| src += image->comps[channel].sgnd |
| ? 1 << (image->comps[channel].prec - 1) |
| : 0; |
| if (adjust_comps[channel] > 0) { |
| *pPixel = 0; |
| } else { |
| *pPixel = (uint8_t)(src << -adjust_comps[channel]); |
| } |
| } |
| } |
| } else { |
| for (int row = 0; row < height; ++row) { |
| uint8_t* pScanline = pChannel + row * pitch; |
| for (int col = 0; col < width; ++col) { |
| uint8_t* pPixel = pScanline + col * image->numcomps; |
| if (!image->comps[channel].data) |
| continue; |
| |
| int src = image->comps[channel].data[row * width + col]; |
| src += image->comps[channel].sgnd |
| ? 1 << (image->comps[channel].prec - 1) |
| : 0; |
| if (adjust_comps[channel] - 1 < 0) { |
| *pPixel = (uint8_t)((src >> adjust_comps[channel])); |
| } else { |
| int tmpPixel = (src >> adjust_comps[channel]) + |
| ((src >> (adjust_comps[channel] - 1)) % 2); |
| if (tmpPixel > 255) { |
| tmpPixel = 255; |
| } else if (tmpPixel < 0) { |
| tmpPixel = 0; |
| } |
| *pPixel = (uint8_t)tmpPixel; |
| } |
| } |
| } |
| } |
| } |
| return true; |
| } |
| |
| CCodec_JpxModule::CCodec_JpxModule() {} |
| |
| CCodec_JpxModule::~CCodec_JpxModule() {} |
| |
| std::unique_ptr<CJPX_Decoder> CCodec_JpxModule::CreateDecoder( |
| const uint8_t* src_buf, |
| uint32_t src_size, |
| CPDF_ColorSpace* cs) { |
| auto decoder = pdfium::MakeUnique<CJPX_Decoder>(cs); |
| return decoder->Init(src_buf, src_size) ? std::move(decoder) : nullptr; |
| } |
| |
| void CCodec_JpxModule::GetImageInfo(CJPX_Decoder* pDecoder, |
| uint32_t* width, |
| uint32_t* height, |
| uint32_t* components) { |
| pDecoder->GetInfo(width, height, components); |
| } |
| |
| bool CCodec_JpxModule::Decode(CJPX_Decoder* pDecoder, |
| uint8_t* dest_data, |
| int pitch, |
| const std::vector<uint8_t>& offsets) { |
| return pDecoder->Decode(dest_data, pitch, offsets); |
| } |
