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Diffstat (limited to 'plugins/AdvaImg/src/FreeImage/PluginKOALA.cpp')
| -rw-r--r-- | plugins/AdvaImg/src/FreeImage/PluginKOALA.cpp | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/plugins/AdvaImg/src/FreeImage/PluginKOALA.cpp b/plugins/AdvaImg/src/FreeImage/PluginKOALA.cpp new file mode 100644 index 0000000000..6c3ae52254 --- /dev/null +++ b/plugins/AdvaImg/src/FreeImage/PluginKOALA.cpp @@ -0,0 +1,243 @@ +// ========================================================== +// KOALA Loader +// +// Design and implementation by +// - Floris van den Berg (flvdberg@wxs.nl) +// +// 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" + +// ---------------------------------------------------------- +// Constants + headers +// ---------------------------------------------------------- + +#ifdef _WIN32 +#pragma pack(push, 1) +#else +#pragma pack(1) +#endif + +typedef struct tagKOALA { + BYTE image[8000]; // pixmap image + BYTE colour1[1000]; // first colourmap (colour 1 and 2) + BYTE colour2[1000]; // second colourmap (colour 3) + BYTE background; // background colour +} koala_t; + +struct colour_t { + int r; + int g; + int b; +}; + +#ifdef _WIN32 +#pragma pack(pop) +#else +#pragma pack() +#endif + +// ---------------------------------------------------------- + +#define CBM_WIDTH 320 +#define CBM_HEIGHT 200 + +// ---------------------------------------------------------- + +const colour_t c64colours[16] = { + { 0, 0, 0 }, // Black + { 255, 255, 255 }, // White + { 170, 17, 17 }, // Red + { 12, 204, 204 }, // Cyan + { 221, 51, 221 }, // Purple + { 0, 187, 0 }, // Green + { 0, 0, 204 }, // Blue + { 255, 255, 140 }, // Yellow + { 204, 119, 34 }, // Orange + { 136, 68, 0 }, // Brown + { 255, 153, 136 }, // Light red + { 92, 92, 92 }, // Gray 1 + { 170, 170, 170 }, // Gray 2 + { 140, 255, 178 }, // Light green + { 39, 148, 255 }, // Light blue + { 196, 196, 196 } // Gray 3 +}; + +// ========================================================== +// Plugin Interface +// ========================================================== + +static int s_format_id; + +// ========================================================== +// Plugin Implementation +// ========================================================== + +const char * DLL_CALLCONV +Format() { + return "KOALA"; +} + +const char * DLL_CALLCONV +Description() { + return "C64 Koala Graphics"; +} + +const char * DLL_CALLCONV +Extension() { + return "koa"; +} + +const char * DLL_CALLCONV +RegExpr() { + return NULL; +} + +static const char * DLL_CALLCONV +MimeType() { + return "image/x-koala"; +} + +static BOOL DLL_CALLCONV +Validate(FreeImageIO *io, fi_handle handle) { + BYTE koala_signature[] = { 0x00, 0x60 }; + BYTE signature[2] = { 0, 0 }; + + io->read_proc(signature, 1, sizeof(koala_signature), handle); + + return (memcmp(koala_signature, signature, sizeof(koala_signature)) == 0); +} + +static BOOL DLL_CALLCONV +SupportsExportDepth(int depth) { + return FALSE; +} + +static BOOL DLL_CALLCONV +SupportsExportType(FREE_IMAGE_TYPE type) { + return FALSE; +} + +// ---------------------------------------------------------- + +FIBITMAP * DLL_CALLCONV +Load(FreeImageIO *io, fi_handle handle, int page, int flags, void *data) { + if (handle) { + koala_t image; + + // read the load address + + unsigned char load_address[2]; // highbit, lowbit + + io->read_proc(&load_address, 1, 2, handle); + + // if the load address is correct, skip it. otherwise ignore the load address + + if ((load_address[0] != 0x00) || (load_address[1] != 0x60)) { + ((BYTE *)&image)[0] = load_address[0]; + ((BYTE *)&image)[1] = load_address[1]; + + io->read_proc((BYTE *)&image + 2, 1, 10001 - 2, handle); + } else { + io->read_proc(&image, 1, 10001, handle); + } + + // build DIB in memory + + FIBITMAP *dib = FreeImage_Allocate(CBM_WIDTH, CBM_HEIGHT, 4); + + if (dib) { + // write out the commodore 64 color palette + + RGBQUAD *palette = FreeImage_GetPalette(dib); + + for (int i = 0; i < 16; i++) { + palette[i].rgbBlue = (BYTE)c64colours[i].b; + palette[i].rgbGreen = (BYTE)c64colours[i].g; + palette[i].rgbRed = (BYTE)c64colours[i].r; + } + + // write out bitmap data + + BYTE pixel_mask[4] = { 0xc0, 0x30, 0x0c, 0x03 }; + BYTE pixel_displacement[4] = { 6, 4, 2, 0 }; + int pixel, index, colourindex; + unsigned char found_color = 0; + + for (int y = 0; y < 200; y++) { + for (int x = 0; x < 160; x++) { + // Get value of pixel at (x,y) + + index = (x / 4) * 8 + (y % 8) + (y / 8) * CBM_WIDTH; + colourindex = (x / 4) + (y / 8) * 40; + pixel = (image.image[index] & pixel_mask[x % 4]) >> pixel_displacement[x % 4]; + + // Retrieve RGB values + + switch (pixel) { + case 0: // Background + found_color = image.background; + break; + + case 1: // Colour 1 + found_color = image.colour1[colourindex] >> 4; + break; + + case 2: // Colour 2 + found_color = image.colour1[colourindex] & 0xf; + break; + + case 3: // Colour 3 + found_color = image.colour2[colourindex] & 0xf; + break; + }; + + *(FreeImage_GetScanLine(dib, CBM_HEIGHT - y - 1) + x) = (found_color << 4) | found_color; + } + } + + return dib; + } + } + + return NULL; +} + +// ========================================================== +// Init +// ========================================================== + +void DLL_CALLCONV +InitKOALA(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 = Validate; + plugin->mime_proc = MimeType; + plugin->supports_export_bpp_proc = SupportsExportDepth; + plugin->supports_export_type_proc = SupportsExportType; + plugin->supports_icc_profiles_proc = NULL; +} |