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Diffstat (limited to 'Source/FreeImage/PluginPCD.cpp')
| -rw-r--r-- | Source/FreeImage/PluginPCD.cpp | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/Source/FreeImage/PluginPCD.cpp b/Source/FreeImage/PluginPCD.cpp new file mode 100644 index 0000000..7c38b67 --- /dev/null +++ b/Source/FreeImage/PluginPCD.cpp @@ -0,0 +1,229 @@ +// ========================================================== +// Kodak PhotoCD Loader +// +// Design and implementation by +// - Floris van den Berg (flvdberg@wxs.nl) +// +// Based on pascal code developed by Alex Kwak +// +// This file is part of FreeImage 3 +// +// COVERED CODE IS PROVIDED UNDER THIS LICENSE ON AN "AS IS" BASIS, WITHOUT WARRANTY +// OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, WARRANTIES +// THAT THE COVERED CODE IS FREE OF DEFECTS, MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE +// OR NON-INFRINGING. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE COVERED +// CODE IS WITH YOU. SHOULD ANY COVERED CODE PROVE DEFECTIVE IN ANY RESPECT, YOU (NOT +// THE INITIAL DEVELOPER OR ANY OTHER CONTRIBUTOR) ASSUME THE COST OF ANY NECESSARY +// SERVICING, REPAIR OR CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL +// PART OF THIS LICENSE. NO USE OF ANY COVERED CODE IS AUTHORIZED HEREUNDER EXCEPT UNDER +// THIS DISCLAIMER. +// +// Use at your own risk! +// ========================================================== + +#include "FreeImage.h" +#include "Utilities.h" + +// ========================================================== +// Internal functions +// ========================================================== + +static int +clamp(double x) { + int a = (int)floor(x + 0.5); + return (a < 0) ? 0 : (a > 255) ? 255 : a; +} + +static void +YUV2RGB(int y, int cb, int cr, int &r, int &g, int &b) { + double c11 = 0.0054980 * 256.0; + double c12 = 0.0000001 * 256.0; + double c13 = 0.0051681 * 256.0; + double c21 = 0.0054980 * 256.0; + double c22 = -0.0015446 * 256.0; + double c23 = -0.0026325 * 256.0; + double c31 = 0.0054980 * 256.0; + double c32 = 0.0079533 * 256.0; + double c33 = 0.0000001 * 256.0; + + r = clamp(c11 * y + c12 * (cb - 156) + c13 * (cr - 137)); + g = clamp(c21 * y + c22 * (cb - 156) + c23 * (cr - 137)); + b = clamp(c31 * y + c32 * (cb - 156) + c33 * (cr - 137)); +} + +static BOOL +VerticalOrientation(FreeImageIO *io, fi_handle handle) { + char buffer[128]; + + io->read_proc(buffer, 128, 1, handle); + + return (buffer[72] & 63) == 8; +} + +// ========================================================== +// Plugin Interface +// ========================================================== + +static int s_format_id; + +// ========================================================== +// Plugin Implementation +// ========================================================== + +static const char * DLL_CALLCONV +Format() { + return "PCD"; +} + +static const char * DLL_CALLCONV +Description() { + return "Kodak PhotoCD"; +} + +static const char * DLL_CALLCONV +Extension() { + return "pcd"; +} + +static const char * DLL_CALLCONV +RegExpr() { + return NULL; +} + +static const char * DLL_CALLCONV +MimeType() { + return "image/x-photo-cd"; +} + +static BOOL DLL_CALLCONV +SupportsExportDepth(int depth) { + return FALSE; +} + +static BOOL DLL_CALLCONV +SupportsExportType(FREE_IMAGE_TYPE type) { + return FALSE; +} + +// ---------------------------------------------------------- + +static FIBITMAP * DLL_CALLCONV +Load(FreeImageIO *io, fi_handle handle, int page, int flags, void *data) { + int width; + int height; + int line; + int pitch; + int bpp = 24; + int scan_line_add = 1; + int start_scan_line = 0; + + // to make absolute seeks possible we store the current position in the file + + long offset_in_file = io->tell_proc(handle); + long seek = 0; + + // decide which bitmap in the cabinet to load + + switch (flags) { + case PCD_BASEDIV4 : + seek = 0x2000; + width = 192; + height = 128; + break; + + case PCD_BASEDIV16 : + seek = 0xB800; + width = 384; + height = 256; + break; + + default : + seek = 0x30000; + width = 768; + height = 512; + break; + } + + // calculate line and pitch based on the selected bitmap size + + line = CalculateLine(width, bpp); + pitch = CalculatePitch(line); + + // allocate the dib and write out the header + + FIBITMAP *dib = FreeImage_Allocate(width, height, bpp, FI_RGBA_RED_MASK, FI_RGBA_GREEN_MASK, FI_RGBA_BLUE_MASK); + + // check if the PCD is bottom-up + + if (VerticalOrientation(io, handle)) { + scan_line_add = -1; + start_scan_line = height - 1; + } + + // temporary stuff to load PCD + + BYTE *y1 = new BYTE[width]; + BYTE *y2 = new BYTE[width]; + BYTE *cbcr = new BYTE[width]; + BYTE *yl[] = { y1, y2 }; + + // seek to the part where the bitmap data begins + + io->seek_proc(handle, offset_in_file, SEEK_SET); + io->seek_proc(handle, seek, SEEK_CUR); + + // read the data + + for (int y = 0; y < height / 2; ++y) { + io->read_proc(y1, width, 1, handle); + io->read_proc(y2, width, 1, handle); + io->read_proc(cbcr, width, 1, handle); + + for (int i = 0; i < 2; ++i) { + BYTE *img = FreeImage_GetScanLine(dib, start_scan_line); + for (int x = 0; x < width; ++x) { + int r, g, b; + + YUV2RGB(yl[i][x], cbcr[x / 2], cbcr[(width / 2) + (x / 2)], r, g, b); + + img[FI_RGBA_BLUE] = (BYTE)b; + img[FI_RGBA_GREEN] = (BYTE)g; + img[FI_RGBA_RED] = (BYTE)r; + img += 3; + } + + start_scan_line += scan_line_add; + } + } + + delete [] cbcr; + delete [] y2; + delete [] y1; + + return dib; +} + +// ========================================================== +// Init +// ========================================================== + +void DLL_CALLCONV +InitPCD(Plugin *plugin, int format_id) { + s_format_id = format_id; + + plugin->format_proc = Format; + plugin->description_proc = Description; + plugin->extension_proc = Extension; + plugin->regexpr_proc = RegExpr; + plugin->open_proc = NULL; + plugin->close_proc = NULL; + plugin->pagecount_proc = NULL; + plugin->pagecapability_proc = NULL; + plugin->load_proc = Load; + plugin->save_proc = NULL; + plugin->validate_proc = NULL; + plugin->mime_proc = MimeType; + plugin->supports_export_bpp_proc = SupportsExportDepth; + plugin->supports_export_type_proc = SupportsExportType; + plugin->supports_icc_profiles_proc = NULL; +} |