+++ /dev/null
-/*
- * Copyright (C) 2018 The Geeqie Team
- *
- * Author: Wolfgang Lieff
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-
- * Derived from dds_reader written by:
- * Copyright (c) 2015 Kenji Sasaki
- * Released under the MIT license.
- * https://github.com/npedotnet/DDSReader/blob/master/LICENSE
-
- */
-
-#include "main.h"
-
-#include "image-load.h"
-#include "image-load-dds.h"
-
-typedef struct _ImageLoaderDDS ImageLoaderDDS;
-struct _ImageLoaderDDS {
- ImageLoaderBackendCbAreaUpdated area_updated_cb;
- ImageLoaderBackendCbSize size_cb;
- ImageLoaderBackendCbAreaPrepared area_prepared_cb;
- gpointer data;
- GdkPixbuf *pixbuf;
- guint requested_width;
- guint requested_height;
- gboolean abort;
-};
-
-static void free_buffer(guchar *pixels, gpointer UNUSED(data))
-{
- g_free(pixels);
-}
-
-uint ddsGetHeight(unsigned const char * buffer) {
- return (buffer[12] & 0xFF) | (buffer[13] & 0xFF) << 8 | (buffer[14] & 0xFF) << 16 | (buffer[15] & 0xFF) << 24;
-}
-
-uint ddsGetWidth(unsigned const char * buffer) {
- return (buffer[16] & 0xFF) | (buffer[17] & 0xFF) << 8 | (buffer[18] & 0xFF) << 16 | (buffer[19] & 0xFF) << 24;
-}
-
-uint ddsGetMipmap(unsigned const char * buffer) {
- return (buffer[28] & 0xFF) | (buffer[29] & 0xFF) << 8 | (buffer[30] & 0xFF) << 16 | (buffer[31] & 0xFF) << 24;
-}
-
-uint ddsGetPixelFormatFlags(unsigned const char * buffer) {
- return (buffer[80] & 0xFF) | (buffer[81] & 0xFF) << 8 | (buffer[82] & 0xFF) << 16 | (buffer[83] & 0xFF) << 24;
-}
-
-uint ddsGetFourCC(unsigned const char * buffer) {
- return (buffer[84] & 0xFF) << 24 | (buffer[85] & 0xFF) << 16 | (buffer[86] & 0xFF) << 8 | (buffer[87] & 0xFF);
-}
-
-uint ddsGetBitCount(unsigned const char * buffer) {
- return (buffer[88] & 0xFF) | (buffer[89] & 0xFF) << 8 | (buffer[90] & 0xFF) << 16 | (buffer[91] & 0xFF) << 24;
-}
-
-uint ddsGetRedMask(unsigned const char * buffer) {
- return (buffer[92] & 0xFF) | (buffer[93] & 0xFF) << 8 | (buffer[94] & 0xFF) << 16 | (buffer[95] & 0xFF) << 24;
-}
-
-uint ddsGetGreenMask(unsigned const char * buffer) {
- return (buffer[96] & 0xFF) | (buffer[97] & 0xFF) << 8 | (buffer[98] & 0xFF) << 16 | (buffer[99] & 0xFF) << 24;
-}
-
-uint ddsGetBlueMask(unsigned const char * buffer) {
- return (buffer[100] & 0xFF) | (buffer[101] & 0xFF) << 8 | (buffer[102] & 0xFF) << 16 | (buffer[103] & 0xFF) << 24;
-}
-
-uint ddsGetAlphaMask(unsigned const char * buffer) {
- return (buffer[104] & 0xFF) | (buffer[105] & 0xFF) << 8 | (buffer[106] & 0xFF) << 16 | (buffer[107] & 0xFF) << 24;
-}
-
-// Image Type
-#define DXT1 (0x44585431)
-#define DXT2 (0x44585432)
-#define DXT3 (0x44585433)
-#define DXT4 (0x44585434)
-#define DXT5 (0x44585435)
-#define A1R5G5B5 ((1 << 16) | 2)
-#define X1R5G5B5 ((2 << 16) | 2)
-#define A4R4G4B4 ((3 << 16) | 2)
-#define X4R4G4B4 ((4 << 16) | 2)
-#define R5G6B5 ((5 << 16) | 2)
-#define R8G8B8 ((1 << 16) | 3)
-#define A8B8G8R8 ((1 << 16) | 4)
-#define X8B8G8R8 ((2 << 16) | 4)
-#define A8R8G8B8 ((3 << 16) | 4)
-#define X8R8G8B8 ((4 << 16) | 4)
-
-// RGBA Masks
-static const uint A1R5G5B5_MASKS[] = { 0x7C00, 0x03E0, 0x001F, 0x8000 };
-static const uint X1R5G5B5_MASKS[] = { 0x7C00, 0x03E0, 0x001F, 0x0000 };
-static const uint A4R4G4B4_MASKS[] = { 0x0F00, 0x00F0, 0x000F, 0xF000 };
-static const uint X4R4G4B4_MASKS[] = { 0x0F00, 0x00F0, 0x000F, 0x0000 };
-static const uint R5G6B5_MASKS[] = { 0xF800, 0x07E0, 0x001F, 0x0000 };
-static const uint R8G8B8_MASKS[] = { 0xFF0000, 0x00FF00, 0x0000FF, 0x000000 };
-static const uint A8B8G8R8_MASKS[] = { 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000 };
-static const uint X8B8G8R8_MASKS[] = { 0x000000FF, 0x0000FF00, 0x00FF0000, 0x00000000 };
-static const uint A8R8G8B8_MASKS[] = { 0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000 };
-static const uint X8R8G8B8_MASKS[] = { 0x00FF0000, 0x0000FF00, 0x000000FF, 0x00000000 };
-
-// BIT4 = 17 * index;
-static const uint BIT5[] = { 0, 8, 16, 25, 33, 41, 49, 58, 66, 74, 82, 90, 99, 107, 115, 123, 132, 140, 148, 156, 165, 173, 181, 189, 197, 206, 214, 222, 230, 239, 247, 255 };
-static const uint BIT6[] = { 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 45, 49, 53, 57, 61, 65, 69, 73, 77, 81, 85, 89, 93, 97, 101, 105, 109, 113, 117, 121, 125, 130, 134, 138, 142, 146, 150, 154, 158, 162, 166, 170, 174, 178, 182, 186, 190, 194, 198, 202, 206, 210, 215, 219, 223, 227, 231, 235, 239, 243, 247, 251, 255 };
-
-static uint ddsGetType(const unsigned char *buffer) {
- uint type = 0;
- uint flags = ddsGetPixelFormatFlags(buffer);
- if ((flags & 0x04) != 0) {
- // DXT
- type = ddsGetFourCC(buffer);
- }
- else if ((flags & 0x40) != 0) {
- // RGB
- uint bitCount = ddsGetBitCount(buffer);
- uint redMask = ddsGetRedMask(buffer);
- uint greenMask = ddsGetGreenMask(buffer);
- uint blueMask = ddsGetBlueMask(buffer);
- uint alphaMask = ((flags & 0x01) != 0) ? ddsGetAlphaMask(buffer) : 0; // 0x01 alpha
- if (bitCount == 16) {
- if (redMask == A1R5G5B5_MASKS[0] && greenMask == A1R5G5B5_MASKS[1] && blueMask == A1R5G5B5_MASKS[2] && alphaMask == A1R5G5B5_MASKS[3]) {
- // A1R5G5B5
- type = A1R5G5B5;
- }
- else if (redMask == X1R5G5B5_MASKS[0] && greenMask == X1R5G5B5_MASKS[1] && blueMask == X1R5G5B5_MASKS[2] && alphaMask == X1R5G5B5_MASKS[3]) {
- // X1R5G5B5
- type = X1R5G5B5;
- }
- else if (redMask == A4R4G4B4_MASKS[0] && greenMask == A4R4G4B4_MASKS[1] && blueMask == A4R4G4B4_MASKS[2] && alphaMask == A4R4G4B4_MASKS[3]) {
- // A4R4G4B4
- type = A4R4G4B4;
- }
- else if (redMask == X4R4G4B4_MASKS[0] && greenMask == X4R4G4B4_MASKS[1] && blueMask == X4R4G4B4_MASKS[2] && alphaMask == X4R4G4B4_MASKS[3]) {
- // X4R4G4B4
- type = X4R4G4B4;
- }
- else if (redMask == R5G6B5_MASKS[0] && greenMask == R5G6B5_MASKS[1] && blueMask == R5G6B5_MASKS[2] && alphaMask == R5G6B5_MASKS[3]) {
- // R5G6B5
- type = R5G6B5;
- }
- else {
- // Unsupported 16bit RGB image
- }
- }
- else if (bitCount == 24) {
- if (redMask == R8G8B8_MASKS[0] && greenMask == R8G8B8_MASKS[1] && blueMask == R8G8B8_MASKS[2] && alphaMask == R8G8B8_MASKS[3]) {
- // R8G8B8
- type = R8G8B8;
- }
- else {
- // Unsupported 24bit RGB image
- }
- }
- else if (bitCount == 32) {
- if (redMask == A8B8G8R8_MASKS[0] && greenMask == A8B8G8R8_MASKS[1] && blueMask == A8B8G8R8_MASKS[2] && alphaMask == A8B8G8R8_MASKS[3]) {
- // A8B8G8R8
- type = A8B8G8R8;
- }
- else if (redMask == X8B8G8R8_MASKS[0] && greenMask == X8B8G8R8_MASKS[1] && blueMask == X8B8G8R8_MASKS[2] && alphaMask == X8B8G8R8_MASKS[3]) {
- // X8B8G8R8
- type = X8B8G8R8;
- }
- else if (redMask == A8R8G8B8_MASKS[0] && greenMask == A8R8G8B8_MASKS[1] && blueMask == A8R8G8B8_MASKS[2] && alphaMask == A8R8G8B8_MASKS[3]) {
- // A8R8G8B8
- type = A8R8G8B8;
- }
- else if (redMask == X8R8G8B8_MASKS[0] && greenMask == X8R8G8B8_MASKS[1] && blueMask == X8R8G8B8_MASKS[2] && alphaMask == X8R8G8B8_MASKS[3]) {
- // X8R8G8B8
- type = X8R8G8B8;
- }
- else {
- // Unsupported 32bit RGB image
- }
- }
- }
- else {
- // YUV or LUMINANCE image
- }
- return type;
-}
-
-uint ddsGetDXTColor2_1(uint c0, uint c1, uint a) {
- // 2*c0/3 + c1/3
- uint r = (2 * BIT5[(c0 & 0xFC00) >> 11] + BIT5[(c1 & 0xFC00) >> 11]) / 3;
- uint g = (2 * BIT6[(c0 & 0x07E0) >> 5] + BIT6[(c1 & 0x07E0) >> 5]) / 3;
- uint b = (2 * BIT5[c0 & 0x001F] + BIT5[c1 & 0x001F]) / 3;
- return (a << 24) | (r << 0) | (g << 8) | (b << 16);
-}
-
-uint ddsGetDXTColor1_1(uint c0, uint c1, uint a) {
- // (c0+c1) / 2
- uint r = (BIT5[(c0 & 0xFC00) >> 11] + BIT5[(c1 & 0xFC00) >> 11]) / 2;
- uint g = (BIT6[(c0 & 0x07E0) >> 5] + BIT6[(c1 & 0x07E0) >> 5]) / 2;
- uint b = (BIT5[c0 & 0x001F] + BIT5[c1 & 0x001F]) / 2;
- return (a << 24) | (r << 0) | (g << 8) | (b << 16);
-}
-
-uint ddsGetDXTColor1(uint c, uint a) {
- uint r = BIT5[(c & 0xFC00) >> 11];
- uint g = BIT6[(c & 0x07E0) >> 5];
- uint b = BIT5[(c & 0x001F)];
- return (a << 24) | (r << 0) | (g << 8) | (b << 16);
-}
-
-uint ddsGetDXTColor(uint c0, uint c1, uint a, uint t) {
- switch (t) {
- case 0: return ddsGetDXTColor1(c0, a);
- case 1: return ddsGetDXTColor1(c1, a);
- case 2: return (c0 > c1) ? ddsGetDXTColor2_1(c0, c1, a) : ddsGetDXTColor1_1(c0, c1, a);
- case 3: return (c0 > c1) ? ddsGetDXTColor2_1(c1, c0, a) : 0;
- }
- return 0;
-}
-
-guchar *ddsDecodeDXT1(uint width, uint height, const unsigned char *buffer) {
- uint *pixels = g_try_malloc(4 * width*height);
- if (pixels == NULL) return NULL;
- uint index = 128;
- uint w = (width + 3) / 4;
- uint h = (height + 3) / 4;
- for (uint i = 0; i<h; i++) {
- for (uint j = 0; j<w; j++) {
- uint c0 = (buffer[index] & 0xFF) | (buffer[index + 1] & 0xFF) << 8; index += 2;
- uint c1 = (buffer[index] & 0xFF) | (buffer[index + 1] & 0xFF) << 8; index += 2;
- for (uint k = 0; k<4; k++) {
- if (4 * i + k >= height) break;
- uint t0 = (buffer[index] & 0x03);
- uint t1 = (buffer[index] & 0x0C) >> 2;
- uint t2 = (buffer[index] & 0x30) >> 4;
- uint t3 = (buffer[index++] & 0xC0) >> 6;
- pixels[4 * width*i + 4 * j + width*k + 0] = ddsGetDXTColor(c0, c1, 0xFF, t0);
- if (4 * j + 1 >= width) continue;
- pixels[4 * width*i + 4 * j + width*k + 1] = ddsGetDXTColor(c0, c1, 0xFF, t1);
- if (4 * j + 2 >= width) continue;
- pixels[4 * width*i + 4 * j + width*k + 2] = ddsGetDXTColor(c0, c1, 0xFF, t2);
- if (4 * j + 3 >= width) continue;
- pixels[4 * width*i + 4 * j + width*k + 3] = ddsGetDXTColor(c0, c1, 0xFF, t3);
- }
- }
- }
- return (guchar *) pixels;
-}
-
-guchar *ddsDecodeDXT3(uint width, uint height, const unsigned char *buffer) {
- uint *pixels = g_try_malloc(4 * width*height);
- if (pixels == NULL) return NULL;
- uint index = 128;
- uint w = (width + 3) / 4;
- uint h = (height + 3) / 4;
- uint alphaTable[16];
- for (uint i = 0; i<h; i++) {
- for (uint j = 0; j<w; j++) {
- // create alpha table(4bit to 8bit)
- for (uint k = 0; k<4; k++) {
- uint a0 = (buffer[index++] & 0xFF);
- uint a1 = (buffer[index++] & 0xFF);
- // 4bit alpha to 8bit alpha
- alphaTable[4 * k + 0] = 17 * ((a0 & 0xF0) >> 4);
- alphaTable[4 * k + 1] = 17 * (a0 & 0x0F);
- alphaTable[4 * k + 2] = 17 * ((a1 & 0xF0) >> 4);
- alphaTable[4 * k + 3] = 17 * (a1 & 0x0F);
- }
- uint c0 = (buffer[index] & 0xFF) | (buffer[index + 1] & 0xFF) << 8; index += 2;
- uint c1 = (buffer[index] & 0xFF) | (buffer[index + 1] & 0xFF) << 8; index += 2;
- for (uint k = 0; k<4; k++) {
- if (4 * i + k >= height) break;
- uint t0 = (buffer[index] & 0x03);
- uint t1 = (buffer[index] & 0x0C) >> 2;
- uint t2 = (buffer[index] & 0x30) >> 4;
- uint t3 = (buffer[index++] & 0xC0) >> 6;
- pixels[4 * width*i + 4 * j + width*k + 0] = ddsGetDXTColor(c0, c1, alphaTable[4 * k + 0], t0);
- if (4 * j + 1 >= width) continue;
- pixels[4 * width*i + 4 * j + width*k + 1] = ddsGetDXTColor(c0, c1, alphaTable[4 * k + 1], t1);
- if (4 * j + 2 >= width) continue;
- pixels[4 * width*i + 4 * j + width*k + 2] = ddsGetDXTColor(c0, c1, alphaTable[4 * k + 2], t2);
- if (4 * j + 3 >= width) continue;
- pixels[4 * width*i + 4 * j + width*k + 3] = ddsGetDXTColor(c0, c1, alphaTable[4 * k + 3], t3);
- }
- }
- }
- return (guchar *) pixels;
-}
-
-guchar *ddsDecodeDXT2(uint width, uint height, const unsigned char *buffer) {
- return ddsDecodeDXT3(width, height, buffer);
-}
-
-int ddsGetDXT5Alpha(uint a0, uint a1, uint t) {
- if (a0 > a1) switch (t) {
- case 0: return a0;
- case 1: return a1;
- case 2: return (6 * a0 + a1) / 7;
- case 3: return (5 * a0 + 2 * a1) / 7;
- case 4: return (4 * a0 + 3 * a1) / 7;
- case 5: return (3 * a0 + 4 * a1) / 7;
- case 6: return (2 * a0 + 5 * a1) / 7;
- case 7: return (a0 + 6 * a1) / 7;
- }
- else switch (t) {
- case 0: return a0;
- case 1: return a1;
- case 2: return (4 * a0 + a1) / 5;
- case 3: return (3 * a0 + 2 * a1) / 5;
- case 4: return (2 * a0 + 3 * a1) / 5;
- case 5: return (a0 + 4 * a1) / 5;
- case 6: return 0;
- case 7: return 255;
- }
- return 0;
-}
-
-guchar *ddsDecodeDXT5(uint width, uint height, const unsigned char *buffer) {
- uint *pixels = g_try_malloc(4 * width*height);
- if (pixels == NULL) return NULL;
- uint index = 128;
- uint w = (width + 3) / 4;
- uint h = (height + 3) / 4;
- uint alphaTable[16];
- for (uint i = 0; i<h; i++) {
- for (uint j = 0; j<w; j++) {
- // create alpha table
- uint a0 = (buffer[index++] & 0xFF);
- uint a1 = (buffer[index++] & 0xFF);
- uint b0 = (buffer[index] & 0xFF) | (buffer[index + 1] & 0xFF) << 8 | (buffer[index + 2] & 0xFF) << 16; index += 3;
- uint b1 = (buffer[index] & 0xFF) | (buffer[index + 1] & 0xFF) << 8 | (buffer[index + 2] & 0xFF) << 16; index += 3;
- alphaTable[0] = b0 & 0x07;
- alphaTable[1] = (b0 >> 3) & 0x07;
- alphaTable[2] = (b0 >> 6) & 0x07;
- alphaTable[3] = (b0 >> 9) & 0x07;
- alphaTable[4] = (b0 >> 12) & 0x07;
- alphaTable[5] = (b0 >> 15) & 0x07;
- alphaTable[6] = (b0 >> 18) & 0x07;
- alphaTable[7] = (b0 >> 21) & 0x07;
- alphaTable[8] = b1 & 0x07;
- alphaTable[9] = (b1 >> 3) & 0x07;
- alphaTable[10] = (b1 >> 6) & 0x07;
- alphaTable[11] = (b1 >> 9) & 0x07;
- alphaTable[12] = (b1 >> 12) & 0x07;
- alphaTable[13] = (b1 >> 15) & 0x07;
- alphaTable[14] = (b1 >> 18) & 0x07;
- alphaTable[15] = (b1 >> 21) & 0x07;
- uint c0 = (buffer[index] & 0xFF) | (buffer[index + 1] & 0xFF) << 8; index += 2;
- uint c1 = (buffer[index] & 0xFF) | (buffer[index + 1] & 0xFF) << 8; index += 2;
- for (uint k = 0; k<4; k++) {
- if (4 * i + k >= height) break;
- uint t0 = (buffer[index] & 0x03);
- uint t1 = (buffer[index] & 0x0C) >> 2;
- uint t2 = (buffer[index] & 0x30) >> 4;
- uint t3 = (buffer[index++] & 0xC0) >> 6;
- pixels[4 * width*i + 4 * j + width*k + 0] = ddsGetDXTColor(c0, c1, ddsGetDXT5Alpha(a0, a1, alphaTable[4 * k + 0]), t0);
- if (4 * j + 1 >= width) continue;
- pixels[4 * width*i + 4 * j + width*k + 1] = ddsGetDXTColor(c0, c1, ddsGetDXT5Alpha(a0, a1, alphaTable[4 * k + 1]), t1);
- if (4 * j + 2 >= width) continue;
- pixels[4 * width*i + 4 * j + width*k + 2] = ddsGetDXTColor(c0, c1, ddsGetDXT5Alpha(a0, a1, alphaTable[4 * k + 2]), t2);
- if (4 * j + 3 >= width) continue;
- pixels[4 * width*i + 4 * j + width*k + 3] = ddsGetDXTColor(c0, c1, ddsGetDXT5Alpha(a0, a1, alphaTable[4 * k + 3]), t3);
- }
- }
- }
- return (guchar *) pixels;
-}
-
-guchar *ddsDecodeDXT4(uint width, uint height, const unsigned char *buffer) {
- return ddsDecodeDXT5(width, height, buffer);
-}
-
-guchar *ddsReadA1R5G5B5(uint width, uint height, const unsigned char *buffer) {
- uint *pixels = g_try_malloc(4 * width*height);
- if (pixels == NULL) return NULL;
- uint index = 128;
- for (uint i = 0; i<height*width; i++) {
- uint rgba = (buffer[index] & 0xFF) | (buffer[index + 1] & 0xFF) << 8; index += 2;
- uint r = BIT5[(rgba & A1R5G5B5_MASKS[0]) >> 10];
- uint g = BIT5[(rgba & A1R5G5B5_MASKS[1]) >> 5];
- uint b = BIT5[(rgba & A1R5G5B5_MASKS[2])];
- uint a = 255 * ((rgba & A1R5G5B5_MASKS[3]) >> 15);
- pixels[i] = (a << 24) | (r << 0) | (g << 8) | (b << 16);
- }
- return (guchar *) pixels;
-}
-
-guchar *ddsReadX1R5G5B5(uint width, uint height, const unsigned char *buffer) {
- uint *pixels = g_try_malloc(4 * width*height);
- if (pixels == NULL) return NULL;
- uint index = 128;
- for (uint i = 0; i<height*width; i++) {
- uint rgba = (buffer[index] & 0xFF) | (buffer[index + 1] & 0xFF) << 8; index += 2;
- uint r = BIT5[(rgba & X1R5G5B5_MASKS[0]) >> 10];
- uint g = BIT5[(rgba & X1R5G5B5_MASKS[1]) >> 5];
- uint b = BIT5[(rgba & X1R5G5B5_MASKS[2])];
- uint a = 255;
- pixels[i] = (a << 24) | (r << 0) | (g << 8) | (b << 16);
- }
- return (guchar *) pixels;
-}
-
-guchar *ddsReadA4R4G4B4(uint width, uint height, const unsigned char *buffer) {
- uint *pixels = g_try_malloc(4 * width*height);
- if (pixels == NULL) return NULL;
- uint index = 128;
- for (uint i = 0; i<height*width; i++) {
- uint rgba = (buffer[index] & 0xFF) | (buffer[index + 1] & 0xFF) << 8; index += 2;
- uint r = 17 * ((rgba & A4R4G4B4_MASKS[0]) >> 8);
- uint g = 17 * ((rgba & A4R4G4B4_MASKS[1]) >> 4);
- uint b = 17 * ((rgba & A4R4G4B4_MASKS[2]));
- uint a = 17 * ((rgba & A4R4G4B4_MASKS[3]) >> 12);
- pixels[i] = (a << 24) | (r << 0) | (g << 8) | (b << 16);
- }
- return (guchar *) pixels;
-}
-
-guchar *ddsReadX4R4G4B4(uint width, uint height, const unsigned char *buffer) {
- uint *pixels = g_try_malloc(4 * width*height);
- if (pixels == NULL) return NULL;
- uint index = 128;
- for (uint i = 0; i<height*width; i++) {
- uint rgba = (buffer[index] & 0xFF) | (buffer[index + 1] & 0xFF) << 8; index += 2;
- uint r = 17 * ((rgba & A4R4G4B4_MASKS[0]) >> 8);
- uint g = 17 * ((rgba & A4R4G4B4_MASKS[1]) >> 4);
- uint b = 17 * ((rgba & A4R4G4B4_MASKS[2]));
- uint a = 255;
- pixels[i] = (a << 24) | (r << 0) | (g << 8) | (b << 16);
- }
- return (guchar *) pixels;
-}
-
-guchar *ddsReadR5G6B5(uint width, uint height, const unsigned char *buffer) {
- uint *pixels = g_try_malloc(4 * width*height);
- if (pixels == NULL) return NULL;
- uint index = 128;
- for (uint i = 0; i<height*width; i++) {
- uint rgba = (buffer[index] & 0xFF) | (buffer[index + 1] & 0xFF) << 8; index += 2;
- uint r = BIT5[((rgba & R5G6B5_MASKS[0]) >> 11)];
- uint g = BIT6[((rgba & R5G6B5_MASKS[1]) >> 5)];
- uint b = BIT5[((rgba & R5G6B5_MASKS[2]))];
- uint a = 255;
- pixels[i] = (a << 24) | (r << 0) | (g << 8) | (b << 16);
- }
- return (guchar *) pixels;
-}
-
-guchar *ddsReadR8G8B8(uint width, uint height, const unsigned char *buffer) {
- uint *pixels = g_try_malloc(4 * width*height);
- if (pixels == NULL) return NULL;
- uint index = 128;
- for (uint i = 0; i<height*width; i++) {
- uint b = buffer[index++] & 0xFF;
- uint g = buffer[index++] & 0xFF;
- uint r = buffer[index++] & 0xFF;
- uint a = 255;
- pixels[i] = (a << 24) | (r << 0) | (g << 8) | (b << 16);
- }
- return (guchar *) pixels;
-}
-
-guchar *ddsReadA8B8G8R8(uint width, uint height, const unsigned char *buffer) {
- uint *pixels = g_try_malloc(4 * width*height);
- if (pixels == NULL) return NULL;
- uint index = 128;
- for (uint i = 0; i<height*width; i++) {
- uint r = buffer[index++] & 0xFF;
- uint g = buffer[index++] & 0xFF;
- uint b = buffer[index++] & 0xFF;
- uint a = buffer[index++] & 0xFF;
- pixels[i] = (a << 24) | (r << 0) | (g << 8) | (b << 16);
- }
- return (guchar *) pixels;
-}
-
-guchar *ddsReadX8B8G8R8(uint width, uint height, const unsigned char *buffer) {
- uint *pixels = g_try_malloc(4 * width*height);
- if (pixels == NULL) return NULL;
- uint index = 128;
- for (uint i = 0; i<height*width; i++) {
- uint r = buffer[index++] & 0xFF;
- uint g = buffer[index++] & 0xFF;
- uint b = buffer[index++] & 0xFF;
- uint a = 255; index++;
- pixels[i] = (a << 24) | (r << 0) | (g << 8) | (b << 16);
- }
- return (guchar *) pixels;
-}
-
-guchar *ddsReadA8R8G8B8(uint width, uint height, const unsigned char *buffer) {
- uint *pixels = g_try_malloc(4 * width*height);
- if (pixels == NULL) return NULL;
- uint index = 128;
- for (uint i = 0; i<height*width; i++) {
- uint b = buffer[index++] & 0xFF;
- uint g = buffer[index++] & 0xFF;
- uint r = buffer[index++] & 0xFF;
- uint a = buffer[index++] & 0xFF;
- pixels[i] = (a << 24) | (r << 0) | (g << 8) | (b << 16);
- }
- return (guchar *) pixels;
-}
-
-guchar *ddsReadX8R8G8B8(uint width, uint height, const unsigned char *buffer) {
- uint *pixels = g_try_malloc(4 * width*height);
- if (pixels == NULL) return NULL;
- uint index = 128;
- for (uint i = 0; i<height*width; i++) {
- uint b = buffer[index++] & 0xFF;
- uint g = buffer[index++] & 0xFF;
- uint r = buffer[index++] & 0xFF;
- uint a = 255; index++;
- pixels[i] = (a << 24) | (r << 0) | (g << 8) | (b << 16);
- }
- return (guchar *) pixels;
-}
-
-static gboolean image_loader_dds_load (gpointer loader, const guchar *buf, gsize UNUSED(count), GError **UNUSED(error))
-{
- ImageLoaderDDS *ld = (ImageLoaderDDS *) loader;
- uint width = ddsGetWidth(buf);
- uint height = ddsGetHeight(buf);
- uint type = ddsGetType(buf);
- if (type == 0) return FALSE;
- {
- guchar *pixels = NULL;
- guint rowstride = width * 4;
- switch (type) {
- case DXT1: pixels = ddsDecodeDXT1(width, height, buf); break;
- case DXT2: pixels = ddsDecodeDXT2(width, height, buf); break;
- case DXT3: pixels = ddsDecodeDXT3(width, height, buf); break;
- case DXT4: pixels = ddsDecodeDXT4(width, height, buf); break;
- case DXT5: pixels = ddsDecodeDXT5(width, height, buf); break;
- case A1R5G5B5: pixels = ddsReadA1R5G5B5(width, height, buf); break;
- case X1R5G5B5: pixels = ddsReadX1R5G5B5(width, height, buf); break;
- case A4R4G4B4: pixels = ddsReadA4R4G4B4(width, height, buf); break;
- case X4R4G4B4: pixels = ddsReadX4R4G4B4(width, height, buf); break;
- case R5G6B5: pixels = ddsReadR5G6B5(width, height, buf); break;
- case R8G8B8: pixels = ddsReadR8G8B8(width, height, buf); break;
- case A8B8G8R8: pixels = ddsReadA8B8G8R8(width, height, buf); break;
- case X8B8G8R8: pixels = ddsReadX8B8G8R8(width, height, buf); break;
- case A8R8G8B8: pixels = ddsReadA8R8G8B8(width, height, buf); break;
- case X8R8G8B8: pixels = ddsReadX8R8G8B8(width, height, buf); break;
- }
- ld->pixbuf = gdk_pixbuf_new_from_data (pixels, GDK_COLORSPACE_RGB, TRUE, 8, width, height, rowstride, free_buffer, NULL);
- ld->area_updated_cb(loader, 0, 0, width, height, ld->data);
- return TRUE;
- }
-}
-
-static gpointer image_loader_dds_new(ImageLoaderBackendCbAreaUpdated area_updated_cb, ImageLoaderBackendCbSize size_cb, ImageLoaderBackendCbAreaPrepared area_prepared_cb, gpointer data)
-{
- ImageLoaderDDS *loader = g_new0(ImageLoaderDDS, 1);
- loader->area_updated_cb = area_updated_cb;
- loader->size_cb = size_cb;
- loader->area_prepared_cb = area_prepared_cb;
- loader->data = data;
- return (gpointer) loader;
-}
-
-static void image_loader_dds_set_size(gpointer loader, int width, int height)
-{
- ImageLoaderDDS *ld = (ImageLoaderDDS *) loader;
- ld->requested_width = width;
- ld->requested_height = height;
-}
-
-static GdkPixbuf* image_loader_dds_get_pixbuf(gpointer loader)
-{
- ImageLoaderDDS *ld = (ImageLoaderDDS *) loader;
- return ld->pixbuf;
-}
-
-static gchar* image_loader_dds_get_format_name(gpointer UNUSED(loader))
-{
- return g_strdup("dds");
-}
-static gchar** image_loader_dds_get_format_mime_types(gpointer UNUSED(loader))
-{
- static gchar *mime[] = {"image/vnd-ms.dds", NULL};
- return g_strdupv(mime);
-}
-
-static gboolean image_loader_dds_close(gpointer UNUSED(loader), GError **UNUSED(error))
-{
- return TRUE;
-}
-
-static void image_loader_dds_abort(gpointer loader)
-{
- ImageLoaderDDS *ld = (ImageLoaderDDS *) loader;
- ld->abort = TRUE;
-}
-
-static void image_loader_dds_free(gpointer loader)
-{
- ImageLoaderDDS *ld = (ImageLoaderDDS *) loader;
- if (ld->pixbuf) g_object_unref(ld->pixbuf);
- g_free(ld);
-}
-
-void image_loader_backend_set_dds(ImageLoaderBackend *funcs)
-{
- funcs->loader_new = image_loader_dds_new;
- funcs->set_size = image_loader_dds_set_size;
- funcs->load = image_loader_dds_load;
- funcs->write = NULL;
- funcs->get_pixbuf = image_loader_dds_get_pixbuf;
- funcs->close = image_loader_dds_close;
- funcs->abort = image_loader_dds_abort;
- funcs->free = image_loader_dds_free;
- funcs->get_format_name = image_loader_dds_get_format_name;
- funcs->get_format_mime_types = image_loader_dds_get_format_mime_types;
-}
-
-/* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */
projects / geeqie.git / blobdiff