--- /dev/null
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+
+#ifdef HAVE_EVIL
+# include <Evil.h>
+#endif
+
+#include "evas_common.h"
+#include "evas_private.h"
+
+/* TGA pixel formats */
+#define TGA_TYPE_MAPPED 1 // handle
+#define TGA_TYPE_COLOR 2
+#define TGA_TYPE_GRAY 3
+#define TGA_TYPE_MAPPED_RLE 9 // handle
+#define TGA_TYPE_COLOR_RLE 10
+#define TGA_TYPE_GRAY_RLE 11
+
+/* TGA header flags */
+#define TGA_DESC_ABITS 0x0f
+#define TGA_DESC_HORIZONTAL 0x10
+#define TGA_DESC_VERTICAL 0x20
+
+#define TGA_SIGNATURE "TRUEVISION-XFILE"
+
+typedef struct
+{
+ unsigned char idLength;
+ unsigned char colorMapType;
+ unsigned char imageType;
+ unsigned char colorMapIndexLo, colorMapIndexHi;
+ unsigned char colorMapLengthLo, colorMapLengthHi;
+ unsigned char colorMapSize;
+ unsigned char xOriginLo, xOriginHi;
+ unsigned char yOriginLo, yOriginHi;
+ unsigned char widthLo, widthHi;
+ unsigned char heightLo, heightHi;
+ unsigned char bpp;
+ unsigned char descriptor;
+} tga_header;
+
+typedef struct
+{
+ unsigned int extensionAreaOffset;
+ unsigned int developerDirectoryOffset;
+ char signature[16];
+ char dot;
+ char null;
+} tga_footer;
+
+
+static Eina_Bool evas_image_load_file_head_tga(Image_Entry *ie, const char *file, const char *key, int *error) EINA_ARG_NONNULL(1, 2, 4);
+static Eina_Bool evas_image_load_file_data_tga(Image_Entry *ie, const char *file, const char *key, int *error) EINA_ARG_NONNULL(1, 2, 4);
+
+static Evas_Image_Load_Func evas_image_load_tga_func =
+{
+ EINA_TRUE,
+ evas_image_load_file_head_tga,
+ evas_image_load_file_data_tga
+};
+
+static int
+read_short(FILE *file, short *ret)
+{
+ unsigned char b[2];
+ if (E_FREAD(b, sizeof(unsigned char), 2, file) != 2) return 0;
+ *ret = (b[1] << 8) | b[0];
+ return 1;
+}
+
+static int
+read_int(FILE *file, int *ret)
+{
+ unsigned char b[4];
+ if (E_FREAD(b, sizeof(unsigned char), 4, file) != 4) return 0;
+ *ret = (b[3] << 24) | (b[2] << 16) | (b[1] << 8) | b[0];
+ return 1;
+}
+
+static Eina_Bool
+evas_image_load_file_head_tga(Image_Entry *ie, const char *file, const char *key __UNUSED__, int *error)
+{
+ int fd;
+ unsigned char *seg = MAP_FAILED, *filedata;
+ struct stat ss;
+ tga_header *header;
+ tga_footer *footer;
+ char hasa = 0, footer_present = 0, vinverted = 0, rle = 0;
+ int w = 0, h = 0, bpp;
+
+ fd = open(file, O_RDONLY);
+
+ *error = EVAS_LOAD_ERROR_DOES_NOT_EXIST;
+ if (fd < 0) return EINA_FALSE;
+ if (fstat(fd, &ss) < 0) goto close_file;
+
+ *error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT;
+ if (ss.st_size < (sizeof(tga_header) + sizeof(tga_footer))) goto close_file;
+ seg = mmap(0, ss.st_size, PROT_READ, MAP_SHARED, fd, 0);
+ if (seg == MAP_FAILED) goto close_file;
+ filedata = seg;
+
+ header = (tga_header *)filedata;
+ // no unaligned data accessed, so ok
+ footer = (tga_footer *)(filedata + (ss.st_size - sizeof(tga_footer)));
+ if (!memcmp(footer->signature, TGA_SIGNATURE, sizeof(footer->signature)))
+ {
+ // footer is ther and matches. this is a tga file - any problems now
+ // are a corrupt file
+ *error = EVAS_LOAD_ERROR_CORRUPT_FILE;
+ footer_present = 1;
+ }
+ filedata = (char *)filedata + sizeof(tga_header);
+ vinverted = !(header->descriptor & TGA_DESC_VERTICAL);
+ switch (header->imageType)
+ {
+ case TGA_TYPE_COLOR_RLE:
+ case TGA_TYPE_GRAY_RLE:
+ rle = 1;
+ break;
+ case TGA_TYPE_COLOR:
+ case TGA_TYPE_GRAY:
+ rle = 0;
+ break;
+ default:
+ goto close_file;
+ }
+ bpp = header->bpp;
+ if (!((bpp == 32) || (bpp == 24) || (bpp == 16) || (bpp == 8)))
+ goto close_file;
+ if ((bpp == 32) && (header->descriptor & TGA_DESC_ABITS)) hasa = 1;
+ w = (header->widthHi << 8) | header->widthLo;
+ h = (header->heightHi << 8) | header->heightLo;
+
+ if ((w < 1) || (h < 1) || (w > IMG_MAX_SIZE) || (h > IMG_MAX_SIZE) ||
+ IMG_TOO_BIG(w, h))
+ goto close_file;
+
+ ie->w = w;
+ ie->h = h;
+ if (hasa) ie->flags.alpha = 1;
+
+ if (seg != MAP_FAILED) munmap(seg, ss.st_size);
+ close(fd);
+ *error = EVAS_LOAD_ERROR_NONE;
+ return EINA_TRUE;
+
+close_file:
+ if (seg != MAP_FAILED) munmap(seg, ss.st_size);
+ close(fd);
+ return EINA_FALSE;
+}
+
+static Eina_Bool
+evas_image_load_file_data_tga(Image_Entry *ie, const char *file, const char *key __UNUSED__, int *error)
+{
+ int fd;
+ unsigned char *seg = MAP_FAILED, *filedata;
+ struct stat ss;
+ tga_header *header;
+ tga_footer *footer;
+ char hasa = 0, footer_present = 0, vinverted = 0, rle = 0;
+ int w = 0, h = 0, x, y, bpp;
+ unsigned int *surface, *dataptr;
+ unsigned int datasize;
+ unsigned char *bufptr, *bufend;
+
+ fd = open(file, O_RDONLY);
+
+ *error = EVAS_LOAD_ERROR_DOES_NOT_EXIST;
+ if (fd < 0) return EINA_FALSE;
+ if (fstat(fd, &ss) < 0) goto close_file;
+
+ *error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT;
+ if (ss.st_size < (sizeof(tga_header) + sizeof(tga_footer))) goto close_file;
+ seg = mmap(0, ss.st_size, PROT_READ, MAP_SHARED, fd, 0);
+ if (seg == MAP_FAILED) goto close_file;
+ filedata = seg;
+
+ header = (tga_header *)filedata;
+ // no unaligned data accessed, so ok
+ footer = (tga_footer *)(filedata + (ss.st_size - sizeof(tga_footer)));
+ if (!memcmp(footer->signature, TGA_SIGNATURE, sizeof(footer->signature)))
+ {
+ // footer is ther and matches. this is a tga file - any problems now
+ // are a corrupt file
+ *error = EVAS_LOAD_ERROR_CORRUPT_FILE;
+ footer_present = 1;
+ }
+ filedata = (char *)filedata + sizeof(tga_header);
+ vinverted = !(header->descriptor & TGA_DESC_VERTICAL);
+ switch (header->imageType)
+ {
+ case TGA_TYPE_COLOR_RLE:
+ case TGA_TYPE_GRAY_RLE:
+ rle = 1;
+ break;
+ case TGA_TYPE_COLOR:
+ case TGA_TYPE_GRAY:
+ rle = 0;
+ break;
+ default:
+ goto close_file;
+ }
+ bpp = header->bpp;
+ if (!((bpp == 32) || (bpp == 24) || (bpp == 16) || (bpp == 8)))
+ goto close_file;
+ if ((bpp == 32) && (header->descriptor & TGA_DESC_ABITS)) hasa = 1;
+ w = (header->widthHi << 8) | header->widthLo;
+ h = (header->heightHi << 8) | header->heightLo;
+
+ if ((w < 1) || (h < 1) || (w > IMG_MAX_SIZE) || (h > IMG_MAX_SIZE) ||
+ IMG_TOO_BIG(w, h))
+ goto close_file;
+
+ if ((w != ie->w) || (h != ie->h))
+ {
+ *error = EVAS_LOAD_ERROR_GENERIC;
+ goto close_file;
+ }
+ evas_cache_image_surface_alloc(ie, w, h);
+ surface = evas_cache_image_pixels(ie);
+ if (!surface)
+ {
+ *error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
+ goto close_file;
+ }
+
+ datasize = ss.st_size - sizeof(tga_header) - header->idLength;
+ if (footer_present)
+ datasize = ss.st_size - sizeof(tga_header) - header->idLength -
+ sizeof(tga_footer);
+
+ bufptr = filedata + header->idLength;
+ bufend = filedata + datasize;
+
+ dataptr = surface;
+
+ if (!rle)
+ {
+ for (y = 0; y < h; y++)
+ {
+ if (vinverted)
+ /* some TGA's are stored upside-down! */
+ dataptr = surface + ((h - y - 1) * w);
+ else
+ dataptr = surface + (y * w);
+ switch (bpp)
+ {
+ case 32:
+ for (x = 0; (x < w) && ((bufptr + 4) <= bufend); x++)
+ {
+ if (hasa)
+ *dataptr =
+ ((255 - bufptr[3]) << 24) | (bufptr[2] << 16) |
+ (bufptr[1] << 8) | (bufptr[0] );
+ else
+ *dataptr =
+ (0xff << 24) | (bufptr[2] << 16) |
+ (bufptr[1] << 8) | (bufptr[0] );
+ dataptr++;
+ bufptr += 4;
+ }
+ break;
+ case 24:
+ for (x = 0; (x < w) && ((bufptr + 3) <= bufend); x++)
+ {
+ *dataptr =
+ (0xff << 24) | (bufptr[2] << 16) |
+ (bufptr[1] << 8) | (bufptr[0] );
+ dataptr++;
+ bufptr += 3;
+ }
+ break;
+ case 16:
+ for (x = 0; (x < w) && ((bufptr + 3) <= bufend); x++)
+ {
+ unsigned char r, g, b, a;
+ unsigned short tmp;
+
+ tmp =
+ (((unsigned short)bufptr[1]) << 8) |
+ (((unsigned short)bufptr[0]));
+ r = (tmp >> 7) & 0xf8; r |= r >> 5;
+ g = (tmp >> 2) & 0xf8; g |= g >> 5;
+ b = (tmp << 3) & 0xf8; b |= b >> 5;
+ a = 0xff;
+ if ((hasa) && (tmp & 0x8000)) a = 0;
+ *dataptr =
+ (a << 24) | (r << 16) |
+ (g << 8) | (b );
+ dataptr++;
+ bufptr += 2;
+ }
+ break;
+ case 8:
+ for (x = 0; (x < w) && ((bufptr + 1) <= bufend); x++)
+ {
+ *dataptr =
+ (0xff << 24) | (bufptr[0] << 16) |
+ (bufptr[0] << 8) | (bufptr[0] );
+ dataptr++;
+ bufptr += 1;
+ }
+ break;
+ default:
+ break;
+ }
+ }
+ }
+ else
+ {
+ int count, i;
+ unsigned char val;
+ unsigned int *dataend;
+
+ dataptr = surface;
+ dataend = dataptr + (w * h);
+ while ((bufptr < bufend) && (dataptr < dataend))
+ {
+ val = *bufptr;
+ bufptr++;
+ count = (val & 0x7f) + 1;
+ if (val & 0x80) // rel packet
+ {
+ switch (bpp)
+ {
+ case 32:
+ if (bufptr < (bufend - 4))
+ {
+ unsigned char r, g, b, a;
+
+ a = 255 - bufptr[3];
+ r = bufptr[2];
+ g = bufptr[1];
+ b = bufptr[0];
+ if (!hasa) a = 0xff;
+ bufptr += 4;
+ for (i = 0; (i < count) && (dataptr < dataend); i++)
+ {
+ *dataptr =
+ (a << 24) | (r << 16) | (g << 8) | (b);
+ dataptr++;
+ }
+ }
+ break;
+ case 24:
+ if (bufptr < (bufend - 3))
+ {
+ unsigned char r, g, b;
+
+ r = bufptr[2];
+ g = bufptr[1];
+ b = bufptr[0];
+ bufptr += 3;
+ for (i = 0; (i < count) && (dataptr < dataend); i++)
+ {
+ *dataptr =
+ (0xff << 24) | (r << 16) | (g << 8) | (b);
+ dataptr++;
+ }
+ }
+ break;
+ case 16:
+ if (bufptr < (bufend - 2))
+ {
+ unsigned char r, g, b, a;
+ unsigned short tmp;
+
+ tmp =
+ (((unsigned short)bufptr[1]) << 8) |
+ (((unsigned short)bufptr[0]));
+ r = (tmp >> 7) & 0xf8; r |= r >> 5;
+ g = (tmp >> 2) & 0xf8; g |= g >> 5;
+ b = (tmp << 3) & 0xf8; b |= b >> 5;
+ a = 0xff;
+ if ((hasa) && (tmp & 0x8000)) a = 0;
+ bufptr += 2;
+ for (i = 0; (i < count) && (dataptr < dataend); i++)
+ {
+ *dataptr =
+ *dataptr =
+ (a << 24) | (r << 16) |
+ (g << 8) | (b );
+ dataptr++;
+ }
+ }
+ break;
+ case 8:
+ if (bufptr < (bufend - 1))
+ {
+ unsigned char g;
+
+ g = bufptr[0];
+ bufptr += 1;
+ for (i = 0; (i < count) && (dataptr < dataend); i++)
+ {
+ *dataptr =
+ (0xff << 24) | (g << 16) | (g << 8) | (g);
+ dataptr++;
+ }
+ }
+ break;
+ default:
+ break;
+ }
+ }
+ else // raw
+ {
+ switch (bpp)
+ {
+ case 32:
+ for (i = 0; (i < count) && (bufptr < (bufend - 4)) && (dataptr < dataend); i++)
+ {
+ if (hasa)
+ *dataptr =
+ ((255 - bufptr[3]) << 24) | (bufptr[2] << 16) |
+ (bufptr[1] << 8) | (bufptr[0] );
+ else
+ *dataptr =
+ (0xff << 24) | (bufptr[2] << 16) |
+ (bufptr[1] << 8) | (bufptr[0] );
+ dataptr++;
+ bufptr += 4;
+ }
+ break;
+ case 24:
+ for (i = 0; (i < count) && (bufptr < (bufend - 3)) && (dataptr < dataend); i++)
+ {
+ *dataptr =
+ (0xff << 24) | (bufptr[2] << 16) |
+ (bufptr[1] << 8) | (bufptr[0] );
+ dataptr++;
+ bufptr += 3;
+ }
+ break;
+ case 16:
+ for (i = 0; (i < count) && (bufptr < (bufend - 2)) && (dataptr < dataend); i++)
+ {
+ unsigned char r, g, b, a;
+ unsigned short tmp;
+
+ tmp =
+ (((unsigned short)bufptr[1]) << 8) |
+ (((unsigned short)bufptr[0]));
+ r = (tmp >> 7) & 0xf8; r |= r >> 5;
+ g = (tmp >> 2) & 0xf8; g |= g >> 5;
+ b = (tmp << 3) & 0xf8; b |= b >> 5;
+ a = 0xff;
+ if ((hasa) && (tmp & 0x8000)) a = 0;
+ *dataptr =
+ (a << 24) | (r << 16) |
+ (g << 8) | (b );
+ dataptr++;
+ bufptr += 2;
+ }
+ break;
+ case 8:
+ for (i = 0; (i < count) && (bufptr < (bufend - 1)) && (dataptr < dataend); i++)
+ {
+ *dataptr =
+ (0xff << 24) | (bufptr[0] << 16) |
+ (bufptr[0] << 8) | (bufptr[0] );
+ dataptr++;
+ bufptr += 1;
+ }
+ break;
+ default:
+ break;
+ }
+ }
+ }
+ if (vinverted)
+ {
+ unsigned int *adv, *adv2, tmp;
+
+ adv = surface;
+ adv2 = surface + (w * (h - 1));
+ for (y = 0; y < (h / 2); y++)
+ {
+ for (x = 0; x < w; x++)
+ {
+ tmp = adv[x];
+ adv[x] = adv2[x];
+ adv2[x] = tmp;
+ }
+ adv2 -= w;
+ adv += w;
+ }
+ }
+ }
+
+ evas_common_image_premul(ie);
+
+ if (seg != MAP_FAILED) munmap(seg, ss.st_size);
+ close(fd);
+ *error = EVAS_LOAD_ERROR_NONE;
+ return EINA_TRUE;
+
+close_file:
+ if (seg != MAP_FAILED) munmap(seg, ss.st_size);
+ close(fd);
+ return EINA_FALSE;
+}
+
+static int
+module_open(Evas_Module *em)
+{
+ if (!em) return 0;
+ em->functions = (void *)(&evas_image_load_tga_func);
+ return 1;
+}
+
+static void
+module_close(Evas_Module *em)
+{
+}
+
+static Evas_Module_Api evas_modapi =
+{
+ EVAS_MODULE_API_VERSION,
+ "tga",
+ "none",
+ {
+ module_open,
+ module_close
+ }
+};
+
+EVAS_MODULE_DEFINE(EVAS_MODULE_TYPE_IMAGE_LOADER, image_loader, tga);
+
+#ifndef EVAS_STATIC_BUILD_TGA
+EVAS_EINA_MODULE_DEFINE(image_loader, tga);
+#endif
projects / framework / uifw / evas.git / commitdiff