+++ /dev/null
-/* -------------------------------------------------------------------------------
-
-Copyright (C) 1999-2007 id Software, Inc. and contributors.
-For a list of contributors, see the accompanying CONTRIBUTORS file.
-
-This file is part of GtkRadiant.
-
-GtkRadiant 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.
-
-GtkRadiant 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 GtkRadiant; if not, write to the Free Software
-Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-
-----------------------------------------------------------------------------------
-
-This code has been altered significantly from its original form, to support
-several games based on the Quake III Arena engine, in the form of "Q3Map2."
-
-------------------------------------------------------------------------------- */
-
-
-
-/* marker */
-#define IMAGE_C
-
-
-
-/* dependencies */
-#include "q3map2.h"
-
-
-
-/* -------------------------------------------------------------------------------
-
-this file contains image pool management with reference counting. note: it isn't
-reentrant, so only call it from init/shutdown code or wrap calls in a mutex
-
-------------------------------------------------------------------------------- */
-
-/*
-LoadDDSBuffer()
-loads a dxtc (1, 3, 5) dds buffer into a valid rgba image
-*/
-
-static void LoadDDSBuffer( byte *buffer, int size, byte **pixels, int *width, int *height )
-{
- int w, h;
- ddsPF_t pf;
-
-
- /* dummy check */
- if( buffer == NULL || size <= 0 || pixels == NULL || width == NULL || height == NULL )
- return;
-
- /* null out */
- *pixels = 0;
- *width = 0;
- *height = 0;
-
- /* get dds info */
- if( DDSGetInfo( (ddsBuffer_t*) buffer, &w, &h, &pf ) )
- {
- Sys_Printf( "WARNING: Invalid DDS texture\n" );
- return;
- }
-
- /* only certain types of dds textures are supported */
- if( pf != DDS_PF_ARGB8888 && pf != DDS_PF_DXT1 && pf != DDS_PF_DXT3 && pf != DDS_PF_DXT5 )
- {
- Sys_Printf( "WARNING: Only DDS texture formats ARGB8888, DXT1, DXT3, and DXT5 are supported (%d)\n", pf );
- return;
- }
-
- /* create image pixel buffer */
- *width = w;
- *height = h;
- *pixels = safe_malloc( w * h * 4 );
-
- /* decompress the dds texture */
- DDSDecompress( (ddsBuffer_t*) buffer, *pixels );
-}
-
-
-
-/*
-PNGReadData()
-callback function for libpng to read from a memory buffer
-note: this function is a total hack, as it reads/writes the png struct directly!
-*/
-
-typedef struct pngBuffer_s
-{
- byte *buffer;
- png_size_t size, offset;
-}
-pngBuffer_t;
-
-void PNGReadData( png_struct *png, png_byte *buffer, png_size_t size )
-{
- pngBuffer_t *pb = (pngBuffer_t*) png_get_io_ptr( png );
-
-
- if( (pb->offset + size) > pb->size )
- size = (pb->size - pb->offset);
- memcpy( buffer, &pb->buffer[ pb->offset ], size );
- pb->offset += size;
- //% Sys_Printf( "Copying %d bytes from 0x%08X to 0x%08X (offset: %d of %d)\n", size, &pb->buffer[ pb->offset ], buffer, pb->offset, pb->size );
-}
-
-
-
-/*
-LoadPNGBuffer()
-loads a png file buffer into a valid rgba image
-*/
-
-static void LoadPNGBuffer( byte *buffer, int size, byte **pixels, int *width, int *height )
-{
- png_struct *png;
- png_info *info, *end;
- pngBuffer_t pb;
- int bitDepth, colorType, channels;
- png_uint_32 w, h, i;
- byte **rowPointers;
-
-
- /* dummy check */
- if( buffer == NULL || size <= 0 || pixels == NULL || width == NULL || height == NULL )
- return;
-
- /* null out */
- *pixels = 0;
- *width = 0;
- *height = 0;
-
- /* determine if this is a png file */
- if( png_sig_cmp( buffer, 0, 8 ) != 0 )
- {
- Sys_Printf( "WARNING: Invalid PNG file\n" );
- return;
- }
-
- /* create png structs */
- png = png_create_read_struct( PNG_LIBPNG_VER_STRING, NULL, NULL, NULL );
- if( png == NULL )
- {
- Sys_Printf( "WARNING: Unable to create PNG read struct\n" );
- return;
- }
-
- info = png_create_info_struct( png );
- if( info == NULL )
- {
- Sys_Printf( "WARNING: Unable to create PNG info struct\n" );
- png_destroy_read_struct( &png, NULL, NULL );
- return;
- }
-
- end = png_create_info_struct( png );
- if( end == NULL )
- {
- Sys_Printf( "WARNING: Unable to create PNG end info struct\n" );
- png_destroy_read_struct( &png, &info, NULL );
- return;
- }
-
- /* set read callback */
- pb.buffer = buffer;
- pb.size = size;
- pb.offset = 0;
- png_set_read_fn( png, &pb, PNGReadData );
- png->io_ptr = &pb; /* hack! */
-
- /* set error longjmp */
- if( setjmp( png->jmpbuf ) )
- {
- Sys_Printf( "WARNING: An error occurred reading PNG image\n" );
- png_destroy_read_struct( &png, &info, &end );
- return;
- }
-
- /* fixme: add proper i/o stuff here */
-
- /* read png info */
- png_read_info( png, info );
-
- /* read image header chunk */
- png_get_IHDR( png, info,
- &w, &h, &bitDepth, &colorType, NULL, NULL, NULL );
-
- /* read number of channels */
- channels = png_get_channels( png, info );
-
- /* the following will probably bork on certain types of png images, but hey... */
-
- /* force indexed/gray/trans chunk to rgb */
- if( (colorType == PNG_COLOR_TYPE_PALETTE && bitDepth <= 8) ||
- (colorType == PNG_COLOR_TYPE_GRAY && bitDepth <= 8) ||
- png_get_valid( png, info, PNG_INFO_tRNS ) )
- png_set_expand( png );
-
- /* strip 16bpc -> 8bpc */
- if( bitDepth == 16 )
- png_set_strip_16( png );
-
- /* pad rgb to rgba */
- if( bitDepth == 8 && colorType == PNG_COLOR_TYPE_RGB)
- png_set_filler( png, 255, PNG_FILLER_AFTER );
-
- /* create image pixel buffer */
- *width = w;
- *height = h;
- *pixels = safe_malloc( w * h * 4 );
-
- /* create row pointers */
- rowPointers = safe_malloc( h * sizeof( byte* ) );
- for( i = 0; i < h; i++ )
- rowPointers[ i ] = *pixels + (i * w * 4);
-
- /* read the png */
- png_read_image( png, rowPointers );
-
- /* clean up */
- free( rowPointers );
- png_destroy_read_struct( &png, &info, &end );
-
-}
-
-
-
-/*
-ImageInit()
-implicitly called by every function to set up image list
-*/
-
-static void ImageInit( void )
-{
- int i;
-
-
- if( numImages <= 0 )
- {
- /* clear images (fixme: this could theoretically leak) */
- memset( images, 0, sizeof( images ) );
-
- /* generate *bogus image */
- images[ 0 ].name = safe_malloc( strlen( DEFAULT_IMAGE ) + 1 );
- strcpy( images[ 0 ].name, DEFAULT_IMAGE );
- images[ 0 ].filename = safe_malloc( strlen( DEFAULT_IMAGE ) + 1 );
- strcpy( images[ 0 ].filename, DEFAULT_IMAGE );
- images[ 0 ].width = 64;
- images[ 0 ].height = 64;
- images[ 0 ].refCount = 1;
- images[ 0 ].pixels = safe_malloc( 64 * 64 * 4 );
- for( i = 0; i < (64 * 64 * 4); i++ )
- images[ 0 ].pixels[ i ] = 255;
- }
-}
-
-
-
-/*
-ImageFree()
-frees an rgba image
-*/
-
-void ImageFree( image_t *image )
-{
- /* dummy check */
- if( image == NULL )
- return;
-
- /* decrement refcount */
- image->refCount--;
-
- /* free? */
- if( image->refCount <= 0 )
- {
- if( image->name != NULL )
- free( image->name );
- image->name = NULL;
- if( image->filename != NULL )
- free( image->filename );
- image->filename = NULL;
- free( image->pixels );
- image->width = 0;
- image->height = 0;
- numImages--;
- }
-}
-
-
-
-/*
-ImageFind()
-finds an existing rgba image and returns a pointer to the image_t struct or NULL if not found
-*/
-
-image_t *ImageFind( const char *filename )
-{
- int i;
- char name[ 1024 ];
-
-
- /* init */
- ImageInit();
-
- /* dummy check */
- if( filename == NULL || filename[ 0 ] == '\0' )
- return NULL;
-
- /* strip file extension off name */
- strcpy( name, filename );
- StripExtension( name );
-
- /* search list */
- for( i = 0; i < MAX_IMAGES; i++ )
- {
- if( images[ i ].name != NULL && !strcmp( name, images[ i ].name ) )
- return &images[ i ];
- }
-
- /* no matching image found */
- return NULL;
-}
-
-
-
-/*
-ImageLoad()
-loads an rgba image and returns a pointer to the image_t struct or NULL if not found
-*/
-
-image_t *ImageLoad( const char *filename )
-{
- int i;
- image_t *image;
- char name[ 1024 ];
- int size;
- byte *buffer = NULL;
- qboolean alphaHack = qfalse;
-
-
- /* init */
- ImageInit();
-
- /* dummy check */
- if( filename == NULL || filename[ 0 ] == '\0' )
- return NULL;
-
- /* strip file extension off name */
- strcpy( name, filename );
- StripExtension( name );
-
- /* try to find existing image */
- image = ImageFind( name );
- if( image != NULL )
- {
- image->refCount++;
- return image;
- }
-
- /* none found, so find first non-null image */
- image = NULL;
- for( i = 0; i < MAX_IMAGES; i++ )
- {
- if( images[ i ].name == NULL )
- {
- image = &images[ i ];
- break;
- }
- }
-
- /* too many images? */
- if( image == NULL )
- Error( "MAX_IMAGES (%d) exceeded, there are too many image files referenced by the map.", MAX_IMAGES );
-
- /* set it up */
- image->name = safe_malloc( strlen( name ) + 1 );
- strcpy( image->name, name );
-
- /* attempt to load tga */
- StripExtension( name );
- strcat( name, ".tga" );
- size = vfsLoadFile( (const char*) name, (void**) &buffer, 0 );
- if( size > 0 )
- LoadTGABuffer( buffer, buffer + size, &image->pixels, &image->width, &image->height );
- else
- {
- /* attempt to load png */
- StripExtension( name );
- strcat( name, ".png" );
- size = vfsLoadFile( (const char*) name, (void**) &buffer, 0 );
- if( size > 0 )
- LoadPNGBuffer( buffer, size, &image->pixels, &image->width, &image->height );
- else
- {
- /* attempt to load jpg */
- StripExtension( name );
- strcat( name, ".jpg" );
- size = vfsLoadFile( (const char*) name, (void**) &buffer, 0 );
- if( size > 0 )
- {
- if( LoadJPGBuff( buffer, size, &image->pixels, &image->width, &image->height ) == -1 && image->pixels != NULL )
- Sys_Printf( "WARNING: LoadJPGBuff: %s\n", (unsigned char*) image->pixels );
- alphaHack = qtrue;
- }
- else
- {
- /* attempt to load dds */
- StripExtension( name );
- strcat( name, ".dds" );
- size = vfsLoadFile( (const char*) name, (void**) &buffer, 0 );
- if( size > 0 )
- {
- LoadDDSBuffer( buffer, size, &image->pixels, &image->width, &image->height );
-
- /* debug code */
- #if 1
- {
- ddsPF_t pf;
- DDSGetInfo( (ddsBuffer_t*) buffer, NULL, NULL, &pf );
- Sys_Printf( "pf = %d\n", pf );
- if( image->width > 0 )
- {
- StripExtension( name );
- strcat( name, "_converted.tga" );
- WriteTGA( "C:\\games\\quake3\\baseq3\\textures\\rad\\dds_converted.tga", image->pixels, image->width, image->height );
- }
- }
- #endif
- }
- }
- }
- }
-
- /* free file buffer */
- free( buffer );
-
- /* make sure everything's kosher */
- if( size <= 0 || image->width <= 0 || image->height <= 0 || image->pixels == NULL )
- {
- //% Sys_Printf( "size = %d width = %d height = %d pixels = 0x%08x (%s)\n",
- //% size, image->width, image->height, image->pixels, name );
- free( image->name );
- image->name = NULL;
- return NULL;
- }
-
- /* set filename */
- image->filename = safe_malloc( strlen( name ) + 1 );
- strcpy( image->filename, name );
-
- /* set count */
- image->refCount = 1;
- numImages++;
-
- if(alphaHack)
- {
- StripExtension( name );
- strcat( name, "_alpha.jpg" );
- size = vfsLoadFile( (const char*) name, (void**) &buffer, 0 );
- if( size > 0 )
- {
- unsigned char *pixels;
- int width, height;
- if( LoadJPGBuff( buffer, size, &pixels, &width, &height ) == -1 && pixels != NULL )
- Sys_Printf( "WARNING: LoadJPGBuff: %s\n", (unsigned char*) image->pixels );
- if(pixels && width == image->width && height == image->height)
- {
- int i;
- for(i = 0; i < width*height; ++i)
- image->pixels[4*i+3] = pixels[4*i+2]; // copy alpha from blue channel
- }
- free(pixels);
- free(buffer);
- }
- }
-
- /* return the image */
- return image;
-}
-
-
projects / voretournament / voretournament.git / blobdiff