mirror of
https://github.com/UberGames/GtkRadiant.git
synced 2024-11-29 15:11:54 +00:00
235 lines
7 KiB
C++
235 lines
7 KiB
C++
/*
|
|
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
|
|
*/
|
|
|
|
// =============================================================================
|
|
// global tables
|
|
|
|
#include "plugin.h"
|
|
|
|
_QERFuncTable_1 g_FuncTable;
|
|
_QERFileSystemTable g_FileSystemTable;
|
|
|
|
// =============================================================================
|
|
// SYNAPSE
|
|
|
|
#include "synapse.h"
|
|
|
|
class CSynapseClientImage : public CSynapseClient
|
|
{
|
|
public:
|
|
// CSynapseClient API
|
|
bool RequestAPI( APIDescriptor_t *pAPI );
|
|
const char* GetInfo();
|
|
|
|
CSynapseClientImage() { }
|
|
virtual ~CSynapseClientImage() { }
|
|
};
|
|
|
|
CSynapseServer* g_pSynapseServer = NULL;
|
|
CSynapseClientImage g_SynapseClient;
|
|
|
|
#if __GNUC__ >= 4
|
|
#pragma GCC visibility push(default)
|
|
#endif
|
|
extern "C" CSynapseClient * SYNAPSE_DLL_EXPORT Synapse_EnumerateInterfaces( const char *version, CSynapseServer *pServer ) {
|
|
#if __GNUC__ >= 4
|
|
#pragma GCC visibility pop
|
|
#endif
|
|
if ( strcmp( version, SYNAPSE_VERSION ) ) {
|
|
Syn_Printf( "ERROR: synapse API version mismatch: should be '" SYNAPSE_VERSION "', got '%s'\n", version );
|
|
return NULL;
|
|
}
|
|
g_pSynapseServer = pServer;
|
|
g_pSynapseServer->IncRef();
|
|
Set_Syn_Printf( g_pSynapseServer->Get_Syn_Printf() );
|
|
|
|
g_SynapseClient.AddAPI( IMAGE_MAJOR, "png", sizeof( _QERPlugImageTable ) );
|
|
g_SynapseClient.AddAPI( RADIANT_MAJOR, NULL, sizeof( _QERFuncTable_1 ), SYN_REQUIRE, &g_FuncTable );
|
|
g_SynapseClient.AddAPI( VFS_MAJOR, "*", sizeof( _QERFileSystemTable ), SYN_REQUIRE, &g_FileSystemTable );
|
|
|
|
return &g_SynapseClient;
|
|
}
|
|
|
|
bool CSynapseClientImage::RequestAPI( APIDescriptor_t *pAPI ){
|
|
if ( !strcmp( pAPI->major_name, IMAGE_MAJOR ) ) {
|
|
_QERPlugImageTable* pTable = static_cast<_QERPlugImageTable*>( pAPI->mpTable );
|
|
if ( !strcmp( pAPI->minor_name, "png" ) ) {
|
|
pTable->m_pfnLoadImage = &LoadImage;
|
|
return true;
|
|
}
|
|
}
|
|
|
|
Syn_Printf( "ERROR: RequestAPI( '%s' ) not found in '%s'\n", pAPI->major_name, GetInfo() );
|
|
return false;
|
|
}
|
|
|
|
#include "version.h"
|
|
|
|
const char* CSynapseClientImage::GetInfo(){
|
|
return "PNG loader module built " __DATE__ " " RADIANT_VERSION;
|
|
}
|
|
|
|
|
|
|
|
// ====== PNG loader functionality ======
|
|
|
|
#include "png.h"
|
|
|
|
#ifdef __APPLE__ //tigital
|
|
#include <stdlib.h>
|
|
#endif
|
|
|
|
void user_warning_fn( png_structp png_ptr, png_const_charp warning_msg ){
|
|
g_FuncTable.m_pfnSysPrintf( "libpng warning: %s\n", warning_msg );
|
|
}
|
|
|
|
void user_error_fn( png_structp png_ptr, png_const_charp error_msg ){
|
|
g_FuncTable.m_pfnSysPrintf( "libpng error: %s\n", error_msg );
|
|
longjmp( png_jmpbuf(png_ptr), 0 );
|
|
}
|
|
|
|
void user_read_data( png_structp png_ptr, png_bytep data, png_uint_32 length ){
|
|
png_bytep *p_p_fbuffer = (png_bytep*)png_get_io_ptr( png_ptr );
|
|
memcpy( data, *p_p_fbuffer, length );
|
|
*p_p_fbuffer += length;
|
|
}
|
|
|
|
void LoadImage( const char *filename, unsigned char **pic, int *width, int *height ){
|
|
png_byte** row_pointers;
|
|
unsigned char *fbuffer = NULL;
|
|
png_bytep p_fbuffer;
|
|
|
|
int nLen = g_FileSystemTable.m_pfnLoadFile( (char *)filename, (void **)&fbuffer, 0 );
|
|
if ( nLen == -1 ) {
|
|
return;
|
|
}
|
|
|
|
p_fbuffer = fbuffer;
|
|
|
|
// the reading glue
|
|
// http://www.libpng.org/pub/png/libpng-manual.html
|
|
|
|
png_structp png_ptr = png_create_read_struct
|
|
( PNG_LIBPNG_VER_STRING, NULL,
|
|
user_error_fn, user_warning_fn );
|
|
if ( !png_ptr ) {
|
|
g_FuncTable.m_pfnSysPrintf( "libpng error: png_create_read_struct\n" );
|
|
return;
|
|
}
|
|
|
|
png_infop info_ptr = png_create_info_struct( png_ptr );
|
|
if ( !info_ptr ) {
|
|
png_destroy_read_struct( &png_ptr,
|
|
NULL, NULL );
|
|
g_FuncTable.m_pfnSysPrintf( "libpng error: png_create_info_struct (info_ptr)\n" );
|
|
return;
|
|
}
|
|
|
|
png_infop end_info = png_create_info_struct( png_ptr );
|
|
if ( !end_info ) {
|
|
png_destroy_read_struct( &png_ptr, &info_ptr,
|
|
NULL );
|
|
g_FuncTable.m_pfnSysPrintf( "libpng error: png_create_info_struct (end_info)\n" );
|
|
return;
|
|
}
|
|
|
|
// configure the read function
|
|
png_set_read_fn( png_ptr, ( void * ) & p_fbuffer, ( png_rw_ptr ) & user_read_data );
|
|
|
|
if ( setjmp( png_jmpbuf(png_ptr) ) ) {
|
|
png_destroy_read_struct( &png_ptr, &info_ptr,
|
|
&end_info );
|
|
if ( *pic ) {
|
|
g_free( *pic );
|
|
free( row_pointers );
|
|
}
|
|
return;
|
|
}
|
|
|
|
png_read_info( png_ptr, info_ptr );
|
|
|
|
int bit_depth = png_get_bit_depth( png_ptr, info_ptr );
|
|
int color_type = png_get_color_type( png_ptr, info_ptr );
|
|
|
|
// we want to treat all images the same way
|
|
// The following code transforms grayscale images of less than 8 to 8 bits,
|
|
// changes paletted images to RGB, and adds a full alpha channel if there is
|
|
// transparency information in a tRNS chunk.
|
|
if ( color_type == PNG_COLOR_TYPE_PALETTE ) {
|
|
png_set_palette_to_rgb( png_ptr );
|
|
}
|
|
|
|
if ( color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8 ) {
|
|
png_set_expand_gray_1_2_4_to_8( png_ptr );
|
|
}
|
|
|
|
if ( png_get_valid( png_ptr, info_ptr, PNG_INFO_tRNS ) ) {
|
|
png_set_tRNS_to_alpha( png_ptr );
|
|
}
|
|
|
|
if ( !( color_type & PNG_COLOR_MASK_ALPHA ) ) {
|
|
// Set the background color to draw transparent and alpha images over.
|
|
png_color_16 my_background, *image_background;
|
|
|
|
if ( png_get_bKGD( png_ptr, info_ptr, &image_background ) ) {
|
|
png_set_background( png_ptr, image_background,
|
|
PNG_BACKGROUND_GAMMA_FILE, 1, 1.0 );
|
|
}
|
|
else{
|
|
png_set_background( png_ptr, &my_background,
|
|
PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0 );
|
|
}
|
|
|
|
// Add alpha byte after each RGB triplet
|
|
png_set_filler( png_ptr, 0xff, PNG_FILLER_AFTER );
|
|
}
|
|
|
|
// read the sucker in one chunk
|
|
png_read_update_info( png_ptr, info_ptr );
|
|
|
|
color_type = png_get_color_type( png_ptr, info_ptr );
|
|
bit_depth = png_get_bit_depth( png_ptr, info_ptr );
|
|
|
|
*width = png_get_image_width( png_ptr, info_ptr );
|
|
*height = png_get_image_height( png_ptr, info_ptr );
|
|
|
|
// allocate the pixel buffer, and the row pointers
|
|
int size = ( *width ) * ( *height ) * 4;
|
|
// still have to use that g_malloc heresy
|
|
*pic = (unsigned char *)g_malloc( size );
|
|
row_pointers = (png_byte**) malloc( ( *height ) * sizeof( png_byte* ) );
|
|
|
|
int i;
|
|
for ( i = 0; i < ( *height ); i++ )
|
|
row_pointers[i] = (png_byte*)( *pic ) + i * 4 * ( *width );
|
|
|
|
// actual read
|
|
png_read_image( png_ptr, row_pointers );
|
|
|
|
/* read rest of file, and get additional chunks in info_ptr - REQUIRED */
|
|
png_read_end( png_ptr, info_ptr );
|
|
|
|
/* free up the memory structure */
|
|
png_destroy_read_struct( &png_ptr, &info_ptr, NULL );
|
|
|
|
free( row_pointers );
|
|
g_FileSystemTable.m_pfnFreeFile( fbuffer );
|
|
}
|