diff options
Diffstat (limited to 'features/org.eclipse.equinox.executable.feature/library/motif/NgImageData.c')
| -rw-r--r-- | features/org.eclipse.equinox.executable.feature/library/motif/NgImageData.c | 490 |
1 files changed, 0 insertions, 490 deletions
diff --git a/features/org.eclipse.equinox.executable.feature/library/motif/NgImageData.c b/features/org.eclipse.equinox.executable.feature/library/motif/NgImageData.c deleted file mode 100644 index 96053b305..000000000 --- a/features/org.eclipse.equinox.executable.feature/library/motif/NgImageData.c +++ /dev/null @@ -1,490 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2000, 2006 IBM Corporation and others. - * All rights reserved. This program and the accompanying materials - * are made available under the terms of the Eclipse Public License v1.0 - * which accompanies this distribution, and is available at - * http://www.eclipse.org/legal/epl-v10.html - * - * Contributors: - * IBM Corporation - initial API and implementation - *******************************************************************************/ - -#include "NgImageData.h" - -static UBYTE4 RoundRow (UBYTE4 width) -{ - UBYTE4 result = (width + RowRounding - 1) - & ~(RowRounding - 1) ; - return result ; -} - -void NgBitmapImageInit (ng_bitmap_image_t *image) -{ - NgBitmapImageClearData (image); -} - -void NgBitmapImageFree (ng_bitmap_image_t *image) -{ - NgFree (image->color_map); - NgFree (image->image_data); - NgFree (image->alpha_data); -} - -void NgBitmapImageClearData (ng_bitmap_image_t *image) -{ - image->bit_count = 0; - image->image_width = 0; - image->image_height = 0; - image->color_count = 0; - image->color_map = NULL; - image->image_data = NULL; - image->alpha_data = NULL; - image->transparent_pixel = -1; -} - -void NgBitmapImageSetSize(ng_bitmap_image_t *image, - UBYTE4 color_count, - UBYTE4 bits, - UBYTE4 width, - UBYTE4 height) -{ - NgFree (image->color_map); - NgFree (image->image_data); - NgBitmapImageClearData (image); - - switch (bits) - { - case 1: - case 2: - case 4: - case 8: - { - UBYTE4 bitsize; - UBYTE4 bytecount; - - image->bit_count = bits; - image->color_count = color_count; - image->image_width = width; - image->image_height = height; - - image->color_map = (ng_color_map_entry_t *) NgMalloc (sizeof(ng_color_map_entry_t) * image->color_count); - NgMemSet (image->color_map, 0, sizeof (ng_color_map_entry_t) * image->color_count); - bitsize = image->bit_count * image->image_width; - image->row_width = RoundRow ((bitsize + 7)/8); - bytecount = image->row_width * image->image_height; - image->image_data = (UBYTE1 *) NgMalloc (bytecount); - NgMemSet (image->image_data, 0, (BYTE4)bytecount); - } - break ; - case 16: - { - image->bit_count = bits; - image->color_count = color_count; - image->image_width = width; - image->image_height = height; - image->row_width = RoundRow (2 * image->image_width); - image->image_data = (UBYTE1 *) NgMalloc (image->row_width * image->image_height); - NgMemSet (image->image_data, 0, image->row_width * image->image_height); - } - break; - case 24: - { - image->bit_count = bits; - image->color_count = color_count; - image->image_width = width; - image->image_height = height; - image->row_width = RoundRow (3 * image->image_width); - image->image_data = (UBYTE1 *) NgMalloc (image->row_width * image->image_height); - NgMemSet (image->image_data, 0, image->row_width * image->image_height); - } - break; - case 32: - { - image->bit_count = bits; - image->color_count = color_count; - image->image_width = width; - image->image_height = height; - image->row_width = RoundRow (4 * image->image_width); - image->image_data = (UBYTE1 *) NgMalloc (image->row_width * image->image_height); - NgMemSet (image->image_data, 0, image->row_width * image->image_height); - } - break ; - default: - NgError (ERR_INVALID_BIT_COUNT, NULL); - } -} - -ng_color_map_entry_t *NgBitmapImageColorMap (ng_bitmap_image_t *image, UBYTE4 index) -{ - if (index >= image->color_count) - { - NgError (ERR_SUBSCRIPT_OUT_OF_RANGE, "Error NgBitmapImageColorMap failed"); - return NULL; - } - - return &image->color_map [index] ; -} - -/* blit constants */ -#define TYPE_INDEX_1_MSB 1 -#define TYPE_INDEX_1_LSB 2 -#define TYPE_INDEX_2 3 -#define TYPE_INDEX_4 4 -#define TYPE_INDEX_8 5 -#define TYPE_GENERIC_24 6 -#define TYPE_GENERIC_8 7 -#define TYPE_GENERIC_16_MSB 8 -#define TYPE_GENERIC_16_LSB 9 -#define TYPE_GENERIC_32_MSB 10 -#define TYPE_GENERIC_32_LSB 11 - -/** - * Computes the required channel shift from a mask. - */ -UBYTE4 getChannelShift(UBYTE4 mask) -{ - UBYTE4 i; - if (mask == 0) return 0; - for (i = 0; ((mask & 1) == 0) && (i < 32); ++i) - { - mask >>= 1; - } - return i; -} - -/** - * Computes the required channel width (depth) from a mask. - */ -UBYTE4 getChannelWidth(UBYTE4 mask, UBYTE4 shift) -{ - UBYTE4 i; - if (mask == 0) return 0; - mask >>= shift; - for (i = shift; ((mask & 1) != 0) && (i < 32); ++i) - { - mask >>= 1; - } - return i - shift; -} - -/** - * Blits a direct palette image into a direct palette image. - * - * srcData the source byte array containing image data - * srcStride the source number of bytes per line - * srcWidth the width of the source blit region - * srcHeight the height of the source blit region - * destData the destination byte array containing image data - * destDepth the destination depth: one of 8, 16, 24, 32 - * destStride the destination number of bytes per line - * destOrder the destination byte ordering: 0 for LSB, 1 otherwise - * ignored if destDepth is not 16 or 32 - * destRedMask the destination red channel mask - * destGreenMask the destination green channel mask - * destBlueMask the destination blue channel mask - * - * It is assumed that. - * srcDepth: 24 - BGR ordering (BMP format) - * no alpha - * srcX: 0 - * srcY: 0 - * destX: 0 - * destY: 0 - * destWidth: same as srcWidth - * destHeight: same as srcHeight - */ -void NgBitmapImageBlitDirectToDirect( - UBYTE1 *srcData, BYTE4 srcStride, - BYTE4 srcWidth, BYTE4 srcHeight, - UBYTE1 *destData, BYTE4 destDepth, BYTE4 destStride, BYTE4 destOrder, - UBYTE4 destRedMask, UBYTE4 destGreenMask, UBYTE4 destBlueMask) -{ - BYTE4 srcX = 0, srcY = 0, destX = 0, destY = 0, destWidth = srcWidth, destHeight = srcHeight; - - BYTE4 sbpp, stype, spr, dbpp, dtype, dpr, dprxi, dpryi, dp, sp, dy, dx; - BYTE4 destRedShift, destRedWidth; - BYTE4 destRedPreShift, destGreenShift, destGreenWidth, destGreenPreShift; - BYTE4 destBlueShift, destBlueWidth, destBluePreShift; - UBYTE1 r, g, b; - UBYTE4 data; - - /*** Prepare source-related data ***/ - sbpp = 3; - stype = TYPE_GENERIC_24; - - spr = srcY * srcStride + srcX * sbpp; - - /*** Prepare destination-related data ***/ - switch (destDepth) - { - case 8: - dbpp = 1; - dtype = TYPE_GENERIC_8; - break; - case 16: - dbpp = 2; - dtype = (destOrder != 0) ? TYPE_GENERIC_16_MSB : TYPE_GENERIC_16_LSB; - break; - case 24: - dbpp = 3; - dtype = TYPE_GENERIC_24; - break; - case 32: - dbpp = 4; - dtype = (destOrder != 0) ? TYPE_GENERIC_32_MSB : TYPE_GENERIC_32_LSB; - break; - default: - return; - } - - dpr = destY * destStride + destX * dbpp; - dprxi = dbpp; - dpryi = destStride; - - /*** Blit ***/ - dp = dpr; - sp = spr; - - /*** Comprehensive blit (apply transformations) ***/ - destRedShift = getChannelShift(destRedMask); - destRedWidth = getChannelWidth(destRedMask, destRedShift); - destRedPreShift = 8 - destRedWidth; - destGreenShift = getChannelShift(destGreenMask); - destGreenWidth = getChannelWidth(destGreenMask, destGreenShift); - destGreenPreShift = 8 - destGreenWidth; - destBlueShift = getChannelShift(destBlueMask); - destBlueWidth = getChannelWidth(destBlueMask, destBlueShift); - destBluePreShift = 8 - destBlueWidth; - - r = 0; g = 0; b = 0; - for (dy = destHeight; dy > 0; --dy, sp = spr += srcStride, dp = dpr += dpryi) - { - for (dx = destWidth; dx > 0; --dx, dp += dprxi) - { - /*** READ NEXT PIXEL ASSUMING BGR ordering (BMP format) ***/ - b = srcData[sp]; - g = srcData[sp + 1]; - r = srcData[sp + 2]; - sp += 3; - /*** WRITE NEXT PIXEL ***/ - data = - (r >> destRedPreShift << destRedShift) | - (g >> destGreenPreShift << destGreenShift) | - (b >> destBluePreShift << destBlueShift); - switch (dtype) - { - case TYPE_GENERIC_8: - { - destData[dp] = (UBYTE1) data; - } break; - case TYPE_GENERIC_16_MSB: - { - destData[dp] = (UBYTE1) (data >> 8); - destData[dp + 1] = (UBYTE1) (data & 0xff); - } break; - case TYPE_GENERIC_16_LSB: - { - destData[dp] = (UBYTE1) (data & 0xff); - destData[dp + 1] = (UBYTE1) (data >> 8); - } break; - case TYPE_GENERIC_24: - { - destData[dp] = (UBYTE1) (data >> 16); - destData[dp + 1] = (UBYTE1) (data >> 8); - destData[dp + 2] = (UBYTE1) (data & 0xff); - } break; - case TYPE_GENERIC_32_MSB: - { - destData[dp] = (UBYTE1) (data >> 24); - destData[dp + 1] = (UBYTE1) (data >> 16); - destData[dp + 2] = (UBYTE1) (data >> 8); - destData[dp + 3] = (UBYTE1) (data & 0xff); - } break; - case TYPE_GENERIC_32_LSB: - { - destData[dp] = (UBYTE1) (data & 0xff); - destData[dp + 1] = (UBYTE1) (data >> 8); - destData[dp + 2] = (UBYTE1) (data >> 16); - destData[dp + 3] = (UBYTE1) (data >> 24); - } break; - } - } - } -} - -/** - * Create a simple hash table used when converting direct colors to values in a palette - * Each bucket stores the RGB codes and the corresponding palette index. - * The key is made from the RGB values. - * It is used as a cache. New entries colliding with older ones simply - * replace them. - */ -ng_palette_bucket_t *NgRGBIndexCreate () -{ - ng_palette_bucket_t *table = (ng_palette_bucket_t *)NgMalloc (RGBIndexTableSize * sizeof (ng_palette_bucket_t)); - NgMemSet (table, 0, RGBIndexTableSize * sizeof (ng_palette_bucket_t)); - return table; -} - -void NgRGBIndexFree (ng_palette_bucket_t *table) -{ - NgFree (table); -} - -void NgRGBIndexSet (ng_palette_bucket_t *table, UBYTE1 r, UBYTE1 g, UBYTE1 b, UBYTE1 index) -{ - int i = (r * g * b) % RGBIndexTableSize; - table[i].blue = b; - table[i].green = g; - table[i].red = r; - table[i].index = index; - table[i].isSet = 1; -} - -int NgRGBIndexGet (ng_palette_bucket_t *table, UBYTE1 r, UBYTE1 g, UBYTE1 b) -{ - int i = (r * g * b) % RGBIndexTableSize; - if (table[i].isSet && table[i].blue == b && table[i].green == g && table[i].red == r) - return table[i].index; - return -1; -} - -/** - * Blits a direct palette image into an index palette image. - * - * srcData the source byte array containing image data - * srcStride the source number of bytes per line - * srcX the top-left x-coord of the source blit region - * srcY the top-left y-coord of the source blit region - * srcWidth the width of the source blit region - * srcHeight the height of the source blit region - * destData the destination byte array containing image data - * destDepth the destination depth: one of 1, 2, 4, 8 - * destStride the destination number of bytes per line - * destOrder the destination byte ordering: 0 if LSB, 1 otherwise; - * ignored if destDepth is not 1 - * destX the top-left x-coord of the destination blit region - * destY the top-left y-coord of the destination blit region - * destWidth the width of the destination blit region - * destHeight the height of the destination blit region - * destColors the destination palette red green blue component intensities - * destNumColors the number of colors in destColors - * - * It is assumed that. - * srcDepth: 24 - BGR ordering (BMP format) - * no alpha - * srcX: 0 - * srcY: 0 - * destX: 0 - * destY: 0 - * destWidth: same as srcWidth - * destHeight: same as srcHeight - */ - -void NgBitmapImageBlitDirectToPalette( - UBYTE1 *srcData, BYTE4 srcStride, - BYTE4 srcWidth, BYTE4 srcHeight, - UBYTE1 *destData, BYTE4 destDepth, BYTE4 destStride, BYTE4 destOrder, - UBYTE1 *destColors, int destNumColors) -{ - BYTE4 srcX = 0, srcY = 0, destX = 0, destY = 0, destWidth = srcWidth, destHeight = srcHeight; - BYTE4 sbpp, spr, dtype, dpr, dp, sp, destPaletteSize, dy, dx, j, dr, dg, db, distance, minDistance; - - UBYTE1 r = 0, g = 0, b = 0, index = 0; - int storedIndex; - ng_palette_bucket_t *RGBIndexTable; - - /*** Prepare source-related data ***/ - sbpp = 3; - spr = srcY * srcStride + srcX * sbpp; - - /*** Prepare destination-related data ***/ - switch (destDepth) - { - case 8: - dtype = TYPE_INDEX_8; - break; - case 4: - destStride <<= 1; - dtype = TYPE_INDEX_4; - break; - case 2: - destStride <<= 2; - dtype = TYPE_INDEX_2; - break; - case 1: - destStride <<= 3; - dtype = (destOrder != 0) ? TYPE_INDEX_1_MSB : TYPE_INDEX_1_LSB; - break; - default: - return; - } - dpr = destY * destStride + destX; - - dp = dpr; - sp = spr; - destPaletteSize = destNumColors; - - RGBIndexTable = NgRGBIndexCreate (); - for (dy = destHeight; dy > 0; --dy, sp = spr += srcStride, dp = dpr += destStride) - { - for (dx = destWidth; dx > 0; --dx, dp += 1) - { - /*** READ NEXT PIXEL ASSUMING BGR ordering (BMP format) ***/ - b = srcData[sp]; - g = srcData[sp+1]; - r = srcData[sp+2]; - sp += 3; - - /*** MAP COLOR TO THE PALETTE ***/ - storedIndex = NgRGBIndexGet (RGBIndexTable, r, g, b); - if (storedIndex >= 0) - { - index = (UBYTE1) storedIndex; - } else - { - for (j = 0, minDistance = 0x7fffffff; j < destPaletteSize; ++j) - { - dr = (destColors[j*3] & 0xff) - r; - dg = (destColors[j*3+1] & 0xff) - g; - db = (destColors[j*3+2] & 0xff) - b; - distance = dr * dr + dg * dg + db * db; - if (distance < minDistance) - { - index = (UBYTE1)j; - if (distance == 0) break; - minDistance = distance; - } - } - NgRGBIndexSet (RGBIndexTable, r, g, b, index); - } - - /*** WRITE NEXT PIXEL ***/ - switch (dtype) { - case TYPE_INDEX_8: - destData[dp] = (UBYTE1) index; - break; - case TYPE_INDEX_4: - if ((dp & 1) != 0) destData[dp >> 1] = ((destData[dp >> 1] & 0xf0) | index); - else destData[dp >> 1] = ((destData[dp >> 1] & 0x0f) | (index << 4)); - break; - case TYPE_INDEX_2: - { - int shift = 6 - (dp & 3) * 2; - destData[dp >> 2] = ((destData[dp >> 2] & ~(0x03 << shift)) | (index << shift)); - } break; - case TYPE_INDEX_1_MSB: - { - int shift = 7 - (dp & 7); - destData[dp >> 3] = ((destData[dp >> 3] & ~(0x01 << shift)) | (index << shift)); - } break; - case TYPE_INDEX_1_LSB: - { - int shift = dp & 7; - destData[dp >> 3] = ((destData[dp >> 3] & ~(0x01 << shift)) | (index << shift)); - } break; - } - } - } - NgRGBIndexFree (RGBIndexTable); -} |