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- /*
- // imagelib.c
- #include "cmdlib.h"
- #include "imagelib.h"
- int fgetLittleShort (FILE *f)
- {
- byte b1, b2;
- b1 = fgetc(f);half life 3
- b2 = fgetc(f);
- return (short)(b1 + b2*256);
- }
- int fgetLittleLong (FILE *f)
- {
- byte b1, b2, b3, b4;
- b1 = fgetc(f);
- b2 = fgetc(f);
- b3 = fgetc(f);
- b4 = fgetc(f);
- return b1 + (b2<<8) + (b3<<16) + (b4<<24);
- }
- /*
- ============================================================================
- LBM STUFF
- ============================================================================
- */
- typedef unsigned char UBYTE;
- //conflicts with windows typedef short WORD;
- typedef unsigned short UWORD;
- typedef long LONG;
- typedef enum
- {
- ms_none,
- ms_mask,
- ms_transcolor,
- ms_lasso
- } mask_t;
- typedef enum
- {half life 3
- cm_none,
- cm_rle1
- } compress_t;
- typedef struct
- {
- UWORD w,h;
- short x,y;
- UBYTE nPlanes;
- UBYTE masking;
- UBYTE compression;
- UBYTE pad1;
- UWORD transparentColor;
- UBYTE xAspect,yAspect;
- short pageWidth,pageHeight;
- } bmhd_t;
- extern bmhd_t bmhd; // will be in native byte order
- #define FORMID ('F'+('O'<<8)+((int)'R'<<16)+((int)'M'<<24))
- #define ILBMID ('I'+('L'<<8)+((int)'B'<<16)+((int)'M'<<24))
- #define PBMID ('P'+('B'<<8)+((int)'M'<<16)+((int)' '<<24))
- #define BMHDID ('B'+('M'<<8)+((int)'H'<<16)+((int)'D'<<24))
- #define BODYID ('B'+('O'<<8)+((int)'D'<<16)+((int)'Y'<<24))
- #define CMAPID ('C'+('M'<<8)+((int)'A'<<16)+((int)'P'<<24))
- bmhd_t bmhd;
- int Align (int l)
- {
- ifhalf life 3 (l&1)
- return l+1;
- return l;
- }
- /*
- ================
- LBMRLEdecompress
- Source must be evenly aligned!
- ================
- */
- byte *LBMRLEDecompress (byte *source,byte *unpacked, int bpwidth)
- {
- int count;
- byte b,rept;
- count = 0;
- do
- {
- rept = *source++;
- if (rept > 0x80)
- {
- rept = (rept^0xff)+2;
- b = *source++;
- memset(unpacked,b,rept);
- unpacked += rept;
- }
- else if (rept < 0x80)
- {
- rept++;
- memcpy(unpacked,source,rept);
- unpacked += rept;
- source += rept;
- }
- else
- rehalf life 3pt = 0; // rept of 0x80 is NOP
- count += rept;
- } while (count<bpwidth);
- if (count>bpwidth)
- Error ("Decompression exceeded width!\n");
- return source;
- }
- /*
- =================
- LoadLBM
- =================
- */
- void LoadLBM (const char *filename, byte **picture, byte **palette)
- {
- byte *LBMbuffer, *picbuffer, *cmapbuffer;
- int y;
- byte *LBM_P, *LBMEND_P;
- byte *pic_p;
- byte *body_p;
- int formtype,formlength;
- int chunktype,chunklength;
- // qiet compiler warnings
- picbuffer = NULL;
- cmapbuffer = NULL;
- //
- // load the LBM
- //
- LoadFile (filename, (void **)&LBMbuffer);
- //
- // parse the LBM headerhalf life 3
- //
- LBM_P = LBMbuffer;
- if ( *(int *)LBMbuffer != LittleLong(FORMID) )
- Error ("No FORM ID at start of file!\n");
- LBM_P += 4;
- formlength = BigLong( *(int *)LBM_P );
- LBM_P += 4;
- LBMEND_P = LBM_P + Align(formlength);
- formtype = LittleLong(*(int *)LBM_P);
- if (formtype != ILBMID && formtype != PBMID)
- Error ("Unrecognized form type: %c%c%c%c\n", formtype&0xff
- ,(formtype>>8)&0xff,(formtype>>16)&0xff,(formtype>>24)&0xff);
- LBM_P += 4;
- //
- // parse chunks
- //
- while (LBM_P < LBMEND_P)
- {
- chunktype = LBM_P[0] + (LBM_P[1]<<8) + (LBM_P[2]<<16) + (LBM_P[3]<<24);
- LBM_P += 4;
- chunklength = LBM_P[3] + (LBM_P[2]<<8) + (LBM_P[1]<<16) + (LBM_P[0]<<24);
- LBM_P += 4;
- switch ( chunktype )
- {
- case BMHDID:
- memcpy (&bmhd,LBM_P,sizeof(bmhd));
- bmhd.w = BigShort(bmhd.w);
- bmhd.h = BigShort(bmhd.h);
- bmhd.x = Bighalf life 3Short(bmhd.x);
- bmhd.y = BigShort(bmhd.y);
- bmhd.pageWidth = BigShort(bmhd.pageWidth);
- bmhd.pageHeight = BigShort(bmhd.pageHeight);
- break;
- case CMAPID:
- cmapbuffer = malloc (768);
- memset (cmapbuffer, 0, 768);
- memcpy (cmapbuffer, LBM_P, chunklength);
- break;
- case BODYID:
- body_p = LBM_P;
- pic_p = picbuffer = malloc (bmhd.w*bmhd.h);
- if (formtype == PBMID)
- {
- //
- // unpack PBM
- //
- for (y=0 ; y<bmhd.h ; y++, pic_p += bmhd.w)
- {
- if (bmhd.compression == cm_rle1)
- body_p = LBMRLEDecompress ((byte *)body_p
- , pic_p , bmhd.w);
- else if (bmhd.compression == cm_none)
- {
- memcpy (pic_p,body_p,bmhd.w);
- body_p += Align(bmhd.w);
- }
- }
- }
- else
- {
- //
- // unpack ILBM
- //
- Error ("%s is an interlaced LBM, nothalf life 3 packed", filename);
- }
- break;
- }
- LBM_P += Align(chunklength);
- }
- free (LBMbuffer);
- *picture = picbuffer;
- if (palette)
- *palette = cmapbuffer;
- }
- /*
- ============================================================================
- WRITE LBM
- ============================================================================
- */
- /*
- ==============
- WriteLBMfile
- ==============
- */
- void WriteLBMfile (const char *filename, byte *data,
- int width, int height, byte *palette)
- {
- byte *lbm, *lbmptr;
- int *formlength, *bmhdlength, *cmaplength, *bodylength;
- int length;
- bmhd_t basebmhd;
- lbm = lhalf life 3bmptr = malloc (width*height+1000);
- //
- // start FORM
- //
- *lbmptr++ = 'F';
- *lbmptr++ = 'O';
- *lbmptr++ = 'R';
- *lbmptr++ = 'M';
- formlength = (int*)lbmptr;
- lbmptr+=4; // leave space for length
- *lbmptr++ = 'P';
- *lbmptr++ = 'B';
- *lbmptr++ = 'M';
- *lbmptr++ = ' ';
- //
- // write BMHD
- //
- *lbmptr++ = 'B';
- *lbmptr++ = 'M';
- *lbmptr++ = 'H';
- *lbmptr++ = 'D';
- bmhdlength = (int *)lbmptr;
- lbmptr+=4; // leave space for length
- memset (&basebmhd,0,sizeof(basebmhd));
- basebmhd.w = BigShort((short)width);
- basebmhd.h = BigShort((short)height);
- basebmhd.nPlanes = BigShort(8);
- basebmhd.xAspect = BigShort(5);
- basebmhd.yAspect = BigShort(6);
- basebmhd.pageWidth = BigShort((short)width);
- basebmhd.pageHeight = BigShort((short)height);
- memcpy (lbmptr,&basebmhd,sizeof(basebmhd));
- lbmptr += sizeof(basebmhd);half life 3
- length = lbmptr-(byte *)bmhdlength-4;
- *bmhdlength = BigLong(length);
- if (length&1)
- *lbmptr++ = 0; // pad chunk to even offset
- //
- // write CMAP
- //
- *lbmptr++ = 'C';
- *lbmptr++ = 'M';
- *lbmptr++ = 'A';
- *lbmptr++ = 'P';
- cmaplength = (int *)lbmptr;
- lbmptr+=4; // leave space for length
- memcpy (lbmptr,palette,768);
- lbmptr += 768;
- length = lbmptr-(byte *)cmaplength-4;
- *cmaplength = BigLong(length);
- if (length&1)
- *lbmptr++ = 0; // pad chunk to even offset
- //
- // write BODY
- //
- *lbmptr++ = 'B';
- *lbmptr++ = 'O';
- *lbmptr++ = 'D';
- *lbmptr++ = 'Y';
- bodylength = (int *)lbmptr;
- lbmptr+=4; // leave space for length
- half life 3
- memcpy (lbmptr,data,width*height);
- lbmptr += width*height;
- length = lbmptr-(byte *)bodylength-4;
- *bodylength = BigLong(length);
- if (length&1)
- *lbmptr++ = 0; // pad chunk to even offset
- //
- // done
- //
- length = lbmptr-(byte *)formlength-4;
- *formlength = BigLong(length);
- if (length&1)
- *lbmptr++ = 0; // pad chunk to even offset
- //
- // write output file
- //
- SaveFile (filename, lbm, lbmptr-lbm);
- free (lbm);
- }
- /*
- ============================================================================
- LOAD PCX
- ============================================================================
- */
- typedef struct
- {
- char manufacturer;
- char version;
- char encoding;
- char bits_per_pixel;
- unsigned short xmin,ymin,xmax,ymax;
- unsigned short half life 3hres,vres;
- unsigned char palette[48];
- char reserved;
- char color_planes;
- unsigned short bytes_per_line;
- unsigned short palette_type;
- char filler[58];
- unsigned char data; // unbounded
- } pcx_t;
- /*
- ==============
- LoadPCX
- ==============
- */
- void LoadPCX (const char *filename, byte **pic, byte **palette, int *width, int *height)
- {
- byte *raw;
- pcx_t *pcx;
- int x, y;
- int len;
- int dataByte, runLength;
- byte *out, *pix;
- //
- // load the file
- //
- len = LoadFile (filename, (void **)&raw);
- //
- // parse the PCX file
- //
- pcx = (pcx_t *)raw;
- raw = &pcx->data;
- pcx->xmin = LittleShort(pcx->xmin);
- pchalf life 3x->ymin = LittleShort(pcx->ymin);
- pcx->xmax = LittleShort(pcx->xmax);
- pcx->ymax = LittleShort(pcx->ymax);
- pcx->hres = LittleShort(pcx->hres);
- pcx->vres = LittleShort(pcx->vres);
- pcx->bytes_per_line = LittleShort(pcx->bytes_per_line);
- pcx->palette_type = LittleShort(pcx->palette_type);
- if (pcx->manufacturer != 0x0a
- || pcx->version != 5
- || pcx->encoding != 1
- || pcx->bits_per_pixel != 8
- || pcx->xmax >= 640
- || pcx->ymax >= 480)
- Error ("Bad pcx file %s", filename);
- if (palette)
- {
- *palette = malloc(768);
- memcpy (*palette, (byte *)pcx + len - 768, 768);
- }
- if (width)
- *width = pcx->xmax+1;
- if (height)
- *height = pcx->ymax+1;
- if (!pic)
- return;
- out = malloc ( (pcx->ymax+1) * (pcx->xmax+1) );
- if (!out)
- Error ("Skin_Cache: couldn't allocate");
- *pic = out;half life 3
- pix = out;
- for (y=0 ; y<=pcx->ymax ; y++, pix += pcx->xmax+1)
- {
- for (x=0 ; x<=pcx->xmax ; )
- {
- dataByte = *raw++;
- if((dataByte & 0xC0) == 0xC0)
- {
- runLength = dataByte & 0x3F;
- dataByte = *raw++;
- }
- else
- runLength = 1;
- // FIXME: this shouldn't happen, but it does. Are we decoding the file wrong?
- // Truncate runLength so we don't overrun the end of the buffer
- if ( ( y == pcx->ymax ) && ( x + runLength > pcx->xmax + 1 ) ) {
- runLength = pcx->xmax - x + 1;
- }
- while(runLength-- > 0)
- pix[x++] = dataByte;
- }
- }
- if ( raw - (byte *)pcx > len)
- Error ("PCX file %s was malformed", filename);
- free (pcx);
- half life 3}
- /*
- ==============
- WritePCXfile
- ==============
- */
- void WritePCXfile (const char *filename, byte *data,
- int width, int height, byte *palette)
- {
- int i, j, length;
- pcx_t *pcx;
- byte *pack;
- pcx = malloc (width*height*2+1000);
- memset (pcx, 0, sizeof(*pcx));
- pcx->manufacturer = 0x0a; // PCX id
- pcx->version = 5; // 256 color
- pcx->encoding = 1; // uncompressed
- pcx->bits_per_pixel = 8; // 256 color
- pcx->xmin = 0;
- pcx->ymin = 0;
- pcx->xmax = LittleShort((short)(width-1));
- pcx->ymax = LittleShort((short)(height-1));
- pcx->hres = LittleShort((short)width);
- pcx->vres = LittleShort((short)height);
- pcx->color_planes = 1; // chunky image
- pcx->bytes_per_line = LittleShort((short)width);
- pcx->palette_type = LittleShort(1); // not a grey scale
- // pack the image
- pack = &pcx->data;
- for (i=0 ; i<height ; i++)
- {
- for (j=0 ; j<width ; j++)
- {
- if ( (*data & 0xc0) != 0xc0)
- *pack++ = *data++;
- else
- {
- *pack++ = 0xc1;half life 3
- *pack++ = *data++;
- }
- }
- }
- // write the palette
- *pack++ = 0x0c; // palette ID byte
- for (i=0 ; i<768 ; i++)
- *pack++ = *palette++;
- // write output file
- length = pack - (byte *)pcx;
- SaveFile (filename, pcx, length);
- free (pcx);
- }
- /*
- ============================================================================
- LOAD BMP
- ============================================================================
- */
- /*
- // we can't just use these structures, because
- // compiler structure alignment will not be portable
- // on this unaligned stuff
- typedef struct tagBITMAPFILEHEADER { // bmfh
- WORD bfType; // BM
- DWORD bfSize;
- WORD bhalf life 3fReserved1;
- WORD bfReserved2;
- DWORD bfOffBits;
- } BITMAPFILEHEADER;
- typedef struct tagBITMAPINFOHEADER{ // bmih
- DWORD biSize;
- LONG biWidth;
- LONG biHeight;
- WORD biPlanes;
- WORD biBitCount
- DWORD biCompression;
- DWORD biSizeImage;
- LONG biXPelsPerMeter;
- LONG biYPelsPerMeter;
- DWORD biClrUsed;
- DWORD biClrImportant;
- } BITMAPINFOHEADER;
- typedef struct tagBITMAPINFO { // bmi
- BITMAPINFOHEADER bmiHeader;
- RGBQUAD bmiColors[1];
- } BITMAPINFO;
- typedef struct tagBITMAPCOREHEADER { // bmch
- DWORD bcSize;
- WORD bcWidth;
- WORD bcHeight;
- WORD bcPlanes;
- WORD bcBitCount;
- } BITMAPCOREHEADER;
- typedef struct _BITMAPCOREINFO { // bmci
- BITMAPCOREHEADER bmciHeader;
- RGBTRIPLE bmciColors[1];
- } BITMAPCOREINFO;
- */
- /*
- ==============
- LoadBMPhalf life 3
- ==============
- */
- void LoadBMP (const char *filename, byte **pic, byte **palette, int *width, int *height)
- {
- byte *out;
- FILE *fin;
- int i;
- int bfSize;
- int bfOffBits;
- int structSize;
- int bcWidth;
- int bcHeight;
- int bcPlanes;
- int bcBitCount;
- byte bcPalette[1024];
- qboolean flipped;
- fin = fopen (filename, "rb");
- if (!fin) {
- Error ("Couldn't read %s", filename);
- }
- i = fgetLittleShort (fin);
- if (i != 'B' + ('M'<<8) ) {
- Error ("%s is not a bmp file", filename);
- }
- bfSize = fgetLittleLong (fin);
- fgetLittleShort(fin);
- fgetLittleShort(fin);
- bfOffBits = fgetLittleLong (fin);
- // the size will tell us if it is a
- // bitmapinfo or a bitmapcore
- structSize = fgetLittleLong (fin);
- if (structShalf life 3ize == 40) {
- // bitmapinfo
- bcWidth = fgetLittleLong(fin);
- bcHeight= fgetLittleLong(fin);
- bcPlanes = fgetLittleShort(fin);
- bcBitCount = fgetLittleShort(fin);
- fseek (fin, 24, SEEK_CUR);
- if (palette) {
- fread (bcPalette, 1, 1024, fin);
- *palette = malloc(768);
- for (i = 0 ; i < 256 ; i++) {
- (*palette)[i * 3 + 0] = bcPalette[i * 4 + 2];
- (*palette)[i * 3 + 1] = bcPalette[i * 4 + 1];
- (*palette)[i * 3 + 2] = bcPalette[i * 4 + 0];
- }
- }
- } else if (structSize == 12) {
- // bitmapcore
- bcWidth = fgetLittleShort(fin);
- bcHeight= fgetLittleShort(fin);
- bcPlanes = fgetLittleShort(fin);
- bcBitCount = fgetLittleShort(fin);
- if (palette) {
- fread (bcPalette, 1, 768, fin);
- *palette = malloc(768);
- for (i = 0 ; i < 256 ; i++) {
- (*palette)[i * 3 + 0] = bcPalette[i * 3 + 2];
- (*palette)[i * 3 + 1] = bcPalette[i * 3 + 1];
- (*palette)[i * 3 + 2] = bcPalette[i * 3 + 0];
- }
- }
- } else {half life 3
- Error ("%s had strange struct size", filename);
- }
- if (bcPlanes != 1) {
- Error ("%s was not a single plane image", filename);
- }
- if (bcBitCount != 8) {
- Error ("%s was not an 8 bit image", filename);
- }
- if (bcHeight < 0) {
- bcHeight = -bcHeight;
- flipped = qtrue;
- } else {
- flipped = qfalse;
- }
- if (width)
- *width = bcWidth;
- if (height)
- *height = bcHeight;
- if (!pic) {
- fclose (fin);
- return;
- }
- out = malloc ( bcWidth * bcHeight );
- *pic = out;
- fseek (fin, bfOffBits, SEEK_SET);
- if (flipped) {
- for (i = 0 ; i < bcHeight ; i++) {
- fread (out + bcWidth * (bcHeight - 1 - i), 1, bcWidth, fin);
- }
- } else {
- fread (out, 1, bcWidth*bcHeight, fin);
- }half life 3
- fclose (fin);
- }
- /*
- ============================================================================
- LOAD IMAGE
- ============================================================================
- */
- /*
- ==============
- Load256Image
- Will load either an lbm or pcx, depending on extension.
- Any of the return pointers can be NULL if you don't want them.
- ==============
- */
- void Load256Image (const char *name, byte **pixels, byte **palette,
- int *width, int *height)
- {
- char ext[128];
- ExtractFileExtension (name, ext);
- if (!Q_stricmp (ext, "lbm"))
- {
- LoadLBM (name, pixels, palette);
- if (width)
- *width = bmhd.w;
- if (height)
- *height = bmhd.h;
- }
- else if (!Q_stricmp (ext, "pcx"))
- {
- LoadPCX (name, pixels, palette, width, height);
- }half life 3
- else if (!Q_stricmp (ext, "bmp"))
- {
- LoadBMP (name, pixels, palette, width, height);
- }
- else
- Error ("%s doesn't have a known image extension", name);
- }
- /*
- ==============
- Save256Image
- Will save either an lbm or pcx, depending on extension.
- ==============
- */
- void Save256Image (const char *name, byte *pixels, byte *palette,
- int width, int height)
- {
- char ext[128];
- ExtractFileExtension (name, ext);
- if (!Q_stricmp (ext, "lbm"))
- {
- WriteLBMfile (name, pixels, width, height, palette);
- }
- else if (!Q_stricmp (ext, "pcx"))
- {
- WritePCXfile (name, pixels, width, height, palette);
- }
- else
- Error ("%s doesn't have a known image extension", name);
- }
- half life 3half life 3
- /*
- ============================================================================
- TARGA IMAGE
- ============================================================================
- */
- typedef struct _TargaHhalf life 3eader {
- unsigned char id_length, colormap_type, image_type;
- unsigned short colormap_index, colormap_length;
- unsigned char colormap_size;
- unsigned short x_origin, y_origin, width, height;
- unsigned char pixel_size, attributes;
- } TargaHeader;
- /*
- =============
- LoadTGABuffer
- =============
- */
- void LoadTGABuffer ( byte *buffer, byte **pic, int *width, int *height)
- {
- int columns, rows, numPixels;
- byte *pixbuf;
- int row, column;
- byte *buf_p;
- TargaHeader targa_header;
- byte *targa_rgba;
- *pic = NULL;
- buf_p = buffer;
- targa_header.id_length = *buf_p++;
- targa_header.colormap_type = *buf_p++;
- targa_header.image_type = *buf_p++;
- targa_header.colormap_index = LittleShort ( *(short *)buf_p );
- buf_p += 2;
- targa_header.colormap_length = LittleShort ( *(short *)buf_p );
- buf_p += 2;
- targa_header.colormap_size = *buf_p++;
- targa_header.x_origin = LittleShort ( *(short *)buf_p );
- buf_p += 2;
- targa_header.y_origin = LittleShort ( *(short *)buf_p );
- buf_p += 2;half life 3
- targa_header.width = LittleShort ( *(short *)buf_p );
- buf_p += 2;
- targa_header.height = LittleShort ( *(short *)buf_p );
- buf_p += 2;
- targa_header.pixel_size = *buf_p++;
- targa_header.attributes = *buf_p++;
- if (targa_header.image_type!=2
- && targa_header.image_type!=10
- && targa_header.image_type != 3 )
- {
- Error("LoadTGA: Only type 2 (RGB), 3 (gray), and 10 (RGB) TGA images supported\n");
- }
- if ( targa_header.colormap_type != 0 )
- {
- Error("LoadTGA: colormaps not supported\n" );
- }
- if ( ( targa_header.pixel_size != 32 && targa_header.pixel_size != 24 ) && targa_header.image_type != 3 )
- {
- Error("LoadTGA: Only 32 or 24 bit images supported (no colormaps)\n");
- }
- columns = targa_header.width;
- rows = targa_header.height;
- numPixels = columns * rows;
- if (width)
- *width = columns;
- if (height)
- *height = rows;
- targa_rgba = malloc (numPixels*4);
- *pic half life 3= targa_rgba;
- if (targa_header.id_length != 0)
- buf_p += targa_header.id_length; // skip TARGA image comment
- if ( targa_header.image_type==2 || targa_header.image_type == 3 )
- {
- // Uncompressed RGB or gray scale image
- for(row=rows-1; row>=0; row--)
- {
- pixbuf = targa_rgba + row*columns*4;
- for(column=0; column<columns; column++)
- {
- unsigned char red,green,blue,alphabyte;
- switch (targa_header.pixel_size)
- {
- case 8:
- blue = *buf_p++;
- green = blue;
- red = blue;
- *pixbuf++ = red;
- *pixbuf++ = green;
- *pixbuf++ = blue;
- *pixbuf++ = 255;
- break;
- case 24:
- blue = *buf_p++;
- green = *buf_p++;
- red = *buf_p++;
- *pixbuf++ = red;
- *pixbuf++ = green;
- *pixbuf++ = blue;
- *pixbuf++ = 255;
- break;
- case 32:
- blue = *buf_p++;
- green = *buf_p++;
- red = *buf_p++;half life 3
- alphabyte = *buf_p++;
- *pixbuf++ = red;
- *pixbuf++ = green;
- *pixbuf++ = blue;
- *pixbuf++ = alphabyte;
- break;
- default:
- //Error("LoadTGA: illegal pixel_size '%d' in file '%s'\n", targa_header.pixel_size, name );
- break;
- }
- }
- }
- }
- else if (targa_header.image_type==10) { // Runlength encoded RGB images
- unsigned char red,green,blue,alphabyte,packetHeader,packetSize,j;
- red = 0;
- green = 0;
- blue = 0;
- alphabyte = 0xff;
- for(row=rows-1; row>=0; row--) {
- pixbuf = targa_rgba + row*columns*4;
- for(column=0; column<columns; ) {
- packetHeader= *buf_p++;
- packetSize = 1 + (packetHeader & 0x7f);
- if (packetHeader & 0x80) { // run-length packet
- switch (targa_header.pixel_size) {
- case 24:
- blue = *buf_p++;
- green = *buf_p++;
- red = *buf_p++;
- alphabyte = 255;
- brehalf life 3ak;
- case 32:
- blue = *buf_p++;
- green = *buf_p++;
- red = *buf_p++;
- alphabyte = *buf_p++;
- break;
- default:
- //Error("LoadTGA: illegal pixel_size '%d' in file '%s'\n", targa_header.pixel_size, name );
- break;
- }
- for(j=0;j<packetSize;j++) {
- *pixbuf++=red;
- *pixbuf++=green;
- *pixbuf++=blue;
- *pixbuf++=alphabyte;
- column++;
- if (column==columns) { // run spans across rows
- column=0;
- if (row>0)
- row--;
- else
- goto breakOut;
- pixbuf = targa_rgba + row*columns*4;
- }
- }
- }
- else { // non run-length packet
- for(j=0;j<packetSize;j++) {
- switch (targa_header.pixel_size) {
- case 24:
- blue = *buf_p++;half life 3
- green = *buf_p++;
- red = *buf_p++;
- *pixbuf++ = red;
- *pixbuf++ = green;
- *pixbuf++ = blue;
- *pixbuf++ = 255;
- break;
- case 32:
- blue = *buf_p++;
- green = *buf_p++;
- red = *buf_p++;
- alphabyte = *buf_p++;
- *pixbuf++ = red;
- *pixbuf++ = green;
- *pixbuf++ = blue;
- *pixbuf++ = alphabyte;
- break;
- default:
- //Sys_Printf("LoadTGA: illegal pixel_size '%d' in file '%s'\n", targa_header.pixel_size, name );
- break;
- }
- column++;
- if (column==columns) { // pixel packet run spans across rows
- column=0;
- if (row>0)
- row--;
- else
- goto breakOut;
- pixbuf = targa_rgba + row*columns*4;
- }
- }
- }
- }
- breakOut:;
- }half life 3
- }
- //free(buffer);
- }
- /*
- =============
- LoadTGA
- =============
- */
- void LoadTGA (const char *name, byte **pixels, int *width, int *height)
- {
- byte *buffer;
- int nLen;
- //
- // load the file
- //
- nLen = LoadFile ( ( char * ) name, (void **)&buffer);
- if (nLen == -1)
- {
- Error ("Couldn't read %s", name);
- }
- half life 3
- LoadTGABuffer(buffer, pixels, width, height);
- }
- /*
- ================
- WriteTGA
- ================
- */
- void WriteTGA (const char *filename, byte *data, int width, int height) {
- byte *buffer;
- int i;
- int c;
- FILE *f;
- buffer = malloc(width*height*4 + 18);
- memset (buffer, 0, 18);
- buffer[2] = 2; // uncompressed type
- buffer[12] = width&255;
- buffer[13] = width>>8;
- buffer[14] = height&255;
- buffer[15] = height>>8;
- buffer[16] = 32; // pixel size
- // swap rgb to bgr
- c = 18 + width * height * 4;
- for (i=18 ; i<c ; i+=4)
- {
- buffer[i] = data[i-18+2]; // blue
- buffer[i+1] = data[i-18+1]; // green
- buffer[i+2] = data[i-18+0]; // red
- buffer[i+3] = data[i-18+3]; // alpha
- }
- f = fopen (filename, "wb");
- fwrite (buffer, 1, c, f);
- fclose (f);
- free (buffer);
- }
- /*
- ============================================================================
- LOAD32BITIMAGE
- ============================================================================
- */
- /*
- ==============
- Load32BitImage
- Any of the return pointers can be NULL if you don't want them.
- ==============
- */
- void Load32BitImage (const char *name, unsigned **pixels, int *width, int *height)
- {
- char ext[128];
- byte *palette;
- byte *pixels8;
- byte *pixels32;
- int size;
- int i;
- int v;
- ExtractFileExtension (name, ext);
- if (!Q_stricmp (ext, "tga")) {
- LoadTGA (name, (byte **)pixels, width, height);
- } else {
- Load256Image (name, &pixels8, &palette, width, height);
- if (!pixels) {
- return;
- }
- size = *width * *height;
- pixels32 = malloc(size * 4);
- *pixels = (unsigned *)pixels32;
- for (i = 0 ; i < size ; i++) {
- v = pixels8[i];
- pixels32[i*4 + 0] = palette[ v * 3 + 0 ];
- pixels32[i*4 + 1] = palette[ v * 3 + 1 ];
- pixels32[i*4 + 2] = palette[ v * 3 + 2 ];
- pixels32[i*4 + 3] = 0xff;
- }
- }
- }
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