d4708
/
source-engine
mirror of https://github.com/nillerusr/source-engine.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
79 Commits
25 Branches
6 Tags
221 MiB
Tree: 61302b61e7
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from '61302b61e7'
${ noResults }
source-engine/common/imageutils.cpp

2302 lines
62 KiB
Raw Normal View History Unescape

1
5 years ago
//========= Copyright Valve Corporation, All rights reserved. ============//
//
// NOTE: To make use of this file, g_pFullFileSystem must be defined, or you can modify
// this source to take an IFileSystem * as input.
//
//=======================================================================================//
// @note Tom Bui: we need to use fopen below in the jpeg code, so we can't have this on...
#ifdef PROTECTED_THINGS_ENABLE
#if !defined( POSIX )
#undef fopen
#endif // POSIX
#endif
#if defined( WIN32 ) && !defined( _X360 )
#include <windows.h> // SRC only!!
#elif defined( POSIX )
#include <stdio.h>
#include <sys/stat.h>
#ifdef OSX
#include <copyfile.h>
#endif
#endif
#include "imageutils.h"
#include "filesystem.h"
#include "utlbuffer.h"
#include "bitmap/bitmap.h"
#include "vtf/vtf.h"
// clang3 on OSX folks the attribute into the prototype, causing a compile failure
// filed radar bug 10397783
#if ( __clang_major__ == 3 )
#include <setjmp.h>
extern void longjmp( jmp_buf, int ) __attribute__((noreturn));
#endif
#ifdef ENGINE_DLL
#include "common.h"
#elif CLIENT_DLL
// @note Tom Bui: instead of forcing the project to include EngineInterface.h...
#include "cdll_int.h"
// engine interface singleton accessors
extern IVEngineClient *engine;
extern class IGameUIFuncs *gameuifuncs;
extern class IEngineSound *enginesound;
extern class IMatchmaking *matchmaking;
extern class IXboxSystem *xboxsystem;
extern class IAchievementMgr *achievementmgr;
extern class CSteamAPIContext *steamapicontext;
#elif REPLAY_DLL
#include "replay/ienginereplay.h"
extern IEngineReplay *g_pEngine;
#elif ENGINE_DLL
#include "EngineInterface.h"
#else
#include "cdll_int.h"
extern IVEngineClient *engine;
#endif
// use the JPEGLIB_USE_STDIO define so that we can read in jpeg's from outside the game directory tree.
#define JPEGLIB_USE_STDIO
#include "jpeglib/jpeglib.h"
#undef JPEGLIB_USE_STDIO
#include "libpng/png.h"
#include <setjmp.h>
#include "bitmap/tgawriter.h"
#include "ivtex.h"
#ifdef WIN32
#include <io.h>
#endif
#ifdef OSX
#include <copyfile.h>
#endif
#ifndef WIN32
#define DeleteFile(s) remove(s)
#endif
#if defined( _X360 )
#include "xbox/xbox_win32stubs.h"
#endif
// memdbgon must be the last include file in a .cpp file!!!
#include <tier0/memdbgon.h>
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
struct ValveJpegErrorHandler_t
{
// The default manager
struct jpeg_error_mgr m_Base;
// For handling any errors
jmp_buf m_ErrorContext;
};
#define JPEG_OUTPUT_BUF_SIZE 4096
struct JPEGDestinationManager_t
{
struct jpeg_destination_mgr pub; // public fields
CUtlBuffer *pBuffer; // target/final buffer
byte *buffer; // start of temp buffer
};
//-----------------------------------------------------------------------------
// Purpose: We'll override the default error handler so we can deal with errors without having to exit the engine
//-----------------------------------------------------------------------------
static void ValveJpegErrorHandler( j_common_ptr cinfo )
{
ValveJpegErrorHandler_t *pError = reinterpret_cast< ValveJpegErrorHandler_t * >( cinfo->err );
char buffer[ JMSG_LENGTH_MAX ];
/* Create the message */
( *cinfo->err->format_message )( cinfo, buffer );
Warning( "%s\n", buffer );
// Bail
longjmp( pError->m_ErrorContext, 1 );
}
// convert the JPEG file given to a TGA file at the given output path.
ConversionErrorType ImgUtl_ConvertJPEGToTGA( const char *jpegpath, const char *tgaPath, bool bRequirePowerOfTwo )
{
#if !defined( _X360 )
//
// !FIXME! This really probably should use ImgUtl_ReadJPEGAsRGBA, to avoid duplicated code.
//
struct jpeg_decompress_struct jpegInfo;
struct ValveJpegErrorHandler_t jerr;
JSAMPROW row_pointer[1];
int row_stride;
int cur_row = 0;
// image attributes
int image_height;
int image_width;
// open the jpeg image file.
FILE *infile = fopen(jpegpath, "rb");
if (infile == NULL)
{
return CE_CANT_OPEN_SOURCE_FILE;
}
// setup error to print to stderr.
jpegInfo.err = jpeg_std_error(&jerr.m_Base);
jpegInfo.err->error_exit = &ValveJpegErrorHandler;
// create the decompress struct.
jpeg_create_decompress(&jpegInfo);
if ( setjmp( jerr.m_ErrorContext ) )
{
// Get here if there is any error
jpeg_destroy_decompress( &jpegInfo );
fclose(infile);
return CE_ERROR_PARSING_SOURCE;
}
jpeg_stdio_src(&jpegInfo, infile);
// read in the jpeg header and make sure that's all good.
if (jpeg_read_header(&jpegInfo, TRUE) != JPEG_HEADER_OK)
{
fclose(infile);
return CE_ERROR_PARSING_SOURCE;
}
// start the decompress with the jpeg engine.
if ( !jpeg_start_decompress(&jpegInfo) )
{
jpeg_destroy_decompress(&jpegInfo);
fclose(infile);
return CE_ERROR_PARSING_SOURCE;
}
// Check for valid width and height (ie. power of 2 and print out an error and exit if not).
if ( ( bRequirePowerOfTwo && ( !IsPowerOfTwo(jpegInfo.image_height) || !IsPowerOfTwo(jpegInfo.image_width) ) )
|| jpegInfo.output_components != 3 )
{
jpeg_destroy_decompress(&jpegInfo);
fclose( infile );
return CE_SOURCE_FILE_SIZE_NOT_SUPPORTED;
}
// now that we've started the decompress with the jpeg lib, we have the attributes of the
// image ready to be read out of the decompress struct.
row_stride = jpegInfo.output_width * jpegInfo.output_components;
image_height = jpegInfo.image_height;
image_width = jpegInfo.image_width;
int mem_required = jpegInfo.image_height * jpegInfo.image_width * jpegInfo.output_components;
// allocate the memory to read the image data into.
unsigned char *buf = (unsigned char *)malloc(mem_required);
if (buf == NULL)
{
jpeg_destroy_decompress(&jpegInfo);
fclose(infile);
return CE_MEMORY_ERROR;
}
// read in all the scan lines of the image into our image data buffer.
bool working = true;
while (working && (jpegInfo.output_scanline < jpegInfo.output_height))
{
row_pointer[0] = &(buf[cur_row * row_stride]);
if ( !jpeg_read_scanlines(&jpegInfo, row_pointer, 1) )
{
working = false;
}
++cur_row;
}
if (!working)
{
free(buf);
jpeg_destroy_decompress(&jpegInfo);
fclose(infile);
return CE_ERROR_PARSING_SOURCE;
}
jpeg_finish_decompress(&jpegInfo);
fclose(infile);
// ok, at this point we have read in the JPEG image to our buffer, now we need to write it out as a TGA file.
CUtlBuffer outBuf;
bool bRetVal = TGAWriter::WriteToBuffer( buf, outBuf, image_width, image_height, IMAGE_FORMAT_RGB888, IMAGE_FORMAT_RGB888 );
if ( bRetVal )
{
if ( !g_pFullFileSystem->WriteFile( tgaPath, NULL, outBuf ) )
{
bRetVal = false;
}
}
free(buf);
return bRetVal ? CE_SUCCESS : CE_ERROR_WRITING_OUTPUT_FILE;
#else
return CE_SOURCE_FILE_FORMAT_NOT_SUPPORTED;
#endif
}
// convert the bmp file given to a TGA file at the given destination path.
ConversionErrorType ImgUtl_ConvertBMPToTGA(const char *bmpPath, const char *tgaPath)
{
if ( !IsPC() )
return CE_SOURCE_FILE_FORMAT_NOT_SUPPORTED;
#ifdef WIN32
int nWidth, nHeight;
ConversionErrorType result;
unsigned char *pBufRGBA = ImgUtl_ReadBMPAsRGBA( bmpPath, nWidth, nHeight, result );
if ( result != CE_SUCCESS)
{
Assert( !pBufRGBA );
free( pBufRGBA );
return result;
}
Assert( pBufRGBA );
// write out the TGA file using the RGB data buffer.
CUtlBuffer outBuf;
bool retval = TGAWriter::WriteToBuffer(pBufRGBA, outBuf, nWidth, nHeight, IMAGE_FORMAT_RGBA8888, IMAGE_FORMAT_RGB888);
free( pBufRGBA );
if ( retval )
{
if ( !g_pFullFileSystem->WriteFile( tgaPath, NULL, outBuf ) )
{
retval = false;
}
}
return retval ? CE_SUCCESS : CE_ERROR_WRITING_OUTPUT_FILE;
#else // WIN32
return CE_SOURCE_FILE_FORMAT_NOT_SUPPORTED;
#endif
}
unsigned char *ImgUtl_ReadVTFAsRGBA( const char *vtfPath, int &width, int &height, ConversionErrorType &errcode )
{
// Just load the whole file into a memory buffer
CUtlBuffer bufFileContents;
if ( !g_pFullFileSystem->ReadFile( vtfPath, NULL, bufFileContents ) )
{
errcode = CE_CANT_OPEN_SOURCE_FILE;
return NULL;
}
IVTFTexture *pVTFTexture = CreateVTFTexture();
if ( !pVTFTexture->Unserialize( bufFileContents ) )
{
DestroyVTFTexture( pVTFTexture );
errcode = CE_ERROR_PARSING_SOURCE;
return NULL;
}
width = pVTFTexture->Width();
height = pVTFTexture->Height();
pVTFTexture->ConvertImageFormat( IMAGE_FORMAT_RGBA8888, false );
int nMemSize = ImageLoader::GetMemRequired( width, height, 1, IMAGE_FORMAT_RGBA8888, false );
unsigned char *pMemImage = (unsigned char *)malloc(nMemSize);
if ( pMemImage == NULL )
{
DestroyVTFTexture( pVTFTexture );
errcode = CE_MEMORY_ERROR;
return NULL;
}
Q_memcpy( pMemImage, pVTFTexture->ImageData(), nMemSize );
DestroyVTFTexture( pVTFTexture );
errcode = CE_SUCCESS;
return pMemImage;
}
// read a TGA header from the current point in the file stream.
static void ImgUtl_ReadTGAHeader(FILE *infile, TGAHeader &header)
{
if (infile == NULL)
{
return;
}
fread(&header.identsize, sizeof(header.identsize), 1, infile);
fread(&header.colourmaptype, sizeof(header.colourmaptype), 1, infile);
fread(&header.imagetype, sizeof(header.imagetype), 1, infile);
fread(&header.colourmapstart, sizeof(header.colourmapstart), 1, infile);
fread(&header.colourmaplength, sizeof(header.colourmaplength), 1, infile);
fread(&header.colourmapbits, sizeof(header.colourmapbits), 1, infile);
fread(&header.xstart, sizeof(header.xstart), 1, infile);
fread(&header.ystart, sizeof(header.ystart), 1, infile);
fread(&header.width, sizeof(header.width), 1, infile);
fread(&header.height, sizeof(header.height), 1, infile);
fread(&header.bits, sizeof(header.bits), 1, infile);
fread(&header.descriptor, sizeof(header.descriptor), 1, infile);
}
// write a TGA header to the current point in the file stream.
static void WriteTGAHeader(FILE *outfile, TGAHeader &header)
{
if (outfile == NULL)
{
return;
}
fwrite(&header.identsize, sizeof(header.identsize), 1, outfile);
fwrite(&header.colourmaptype, sizeof(header.colourmaptype), 1, outfile);
fwrite(&header.imagetype, sizeof(header.imagetype), 1, outfile);
fwrite(&header.colourmapstart, sizeof(header.colourmapstart), 1, outfile);
fwrite(&header.colourmaplength, sizeof(header.colourmaplength), 1, outfile);
fwrite(&header.colourmapbits, sizeof(header.colourmapbits), 1, outfile);
fwrite(&header.xstart, sizeof(header.xstart), 1, outfile);
fwrite(&header.ystart, sizeof(header.ystart), 1, outfile);
fwrite(&header.width, sizeof(header.width), 1, outfile);
fwrite(&header.height, sizeof(header.height), 1, outfile);
fwrite(&header.bits, sizeof(header.bits), 1, outfile);
fwrite(&header.descriptor, sizeof(header.descriptor), 1, outfile);
}
// reads in a TGA file and converts it to 32 bit RGBA color values in a memory buffer.
unsigned char * ImgUtl_ReadTGAAsRGBA(const char *tgaPath, int &width, int &height, ConversionErrorType &errcode, TGAHeader &tgaHeader )
{
FILE *tgaFile = fopen(tgaPath, "rb");
if (tgaFile == NULL)
{
errcode = CE_CANT_OPEN_SOURCE_FILE;
return NULL;
}
// read header for TGA file.
ImgUtl_ReadTGAHeader(tgaFile, tgaHeader);
if (
( tgaHeader.imagetype != 2 ) // image type 2 is uncompressed RGB, other types not supported.
|| ( tgaHeader.descriptor & 0x10 ) // Origin on righthand side (flipped horizontally from common sense) --- nobody ever uses this
|| ( tgaHeader.bits != 24 && tgaHeader.bits != 32 ) // Must be 24- ot 32-bit
)
{
fclose(tgaFile);
errcode = CE_SOURCE_FILE_TGA_FORMAT_NOT_SUPPORTED;
return NULL;
}
int tgaDataSize = tgaHeader.width * tgaHeader.height * tgaHeader.bits / 8;
unsigned char *tgaData = (unsigned char *)malloc(tgaDataSize);
if (tgaData == NULL)
{
fclose(tgaFile);
errcode = CE_MEMORY_ERROR;
return NULL;
}
fread(tgaData, 1, tgaDataSize, tgaFile);
fclose(tgaFile);
width = tgaHeader.width;
height = tgaHeader.height;
int numPixels = tgaHeader.width * tgaHeader.height;
if (tgaHeader.bits == 24)
{
// image needs to be converted to a 32-bit image.
unsigned char *retBuf = (unsigned char *)malloc(numPixels * 4);
if (retBuf == NULL)
{
free(tgaData);
errcode = CE_MEMORY_ERROR;
return NULL;
}
// convert from BGR to RGBA color format.
for (int index = 0; index < numPixels; ++index)
{
retBuf[index * 4] = tgaData[index * 3 + 2];
retBuf[index * 4 + 1] = tgaData[index * 3 + 1];
retBuf[index * 4 + 2] = tgaData[index * 3];
retBuf[index * 4 + 3] = 0xff;
}
free(tgaData);
tgaData = retBuf;
tgaHeader.bits = 32;
}
else if (tgaHeader.bits == 32)
{
// Swap blue and red to convert BGR -> RGB
for (int index = 0; index < numPixels; ++index)
{
V_swap( tgaData[index*4], tgaData[index*4 + 2] );
}
}
// Flip image vertically if necessary
if ( !( tgaHeader.descriptor & 0x20 ) )
{
int y0 = 0;
int y1 = height-1;
int iStride = width*4;
while ( y0 < y1 )
{
unsigned char *ptr0 = tgaData + y0*iStride;
unsigned char *ptr1 = tgaData + y1*iStride;
for ( int i = 0 ; i < iStride ; ++i )
{
V_swap( ptr0[i], ptr1[i] );
}
++y0;
--y1;
}
tgaHeader.descriptor |= 0x20;
}
errcode = CE_SUCCESS;
return tgaData;
}
unsigned char *ImgUtl_ReadJPEGAsRGBA( const char *jpegPath, int &width, int &height, ConversionErrorType &errcode )
{
#if !defined( _X360 )
struct jpeg_decompress_struct jpegInfo;
struct ValveJpegErrorHandler_t jerr;
JSAMPROW row_pointer[1];
int row_stride;
int cur_row = 0;
// image attributes
int image_height;
int image_width;
// open the jpeg image file.
FILE *infile = fopen(jpegPath, "rb");
if (infile == NULL)
{
errcode = CE_CANT_OPEN_SOURCE_FILE;
return NULL;
}
//CJpegSourceMgr src;
//FileHandle_t fileHandle = g_pFullFileSystem->Open( jpegPath, "rb" );
//if ( fileHandle == FILESYSTEM_INVALID_HANDLE )
//{
// errcode = CE_CANT_OPEN_SOURCE_FILE;
// return NULL;
//}
//if ( !src.Init( g_pFullFileSystem, fileHandle ) ) {
// errcode = CE_CANT_OPEN_SOURCE_FILE;
// g_pFullFileSystem->Close( fileHandle );
// return NULL;
//}
// setup error to print to stderr.
memset( &jpegInfo, 0, sizeof( jpegInfo ) );
jpegInfo.err = jpeg_std_error(&jerr.m_Base);
jpegInfo.err->error_exit = &ValveJpegErrorHandler;
// create the decompress struct.
jpeg_create_decompress(&jpegInfo);
if ( setjmp( jerr.m_ErrorContext ) )
{
// Get here if there is any error
jpeg_destroy_decompress( &jpegInfo );
fclose( infile );
//g_pFullFileSystem->Close( fileHandle );
errcode = CE_ERROR_PARSING_SOURCE;
return NULL;
}
jpeg_stdio_src(&jpegInfo, infile);
//jpegInfo.src = &src;
// read in the jpeg header and make sure that's all good.
if (jpeg_read_header(&jpegInfo, TRUE) != JPEG_HEADER_OK)
{
fclose( infile );
//g_pFullFileSystem->Close( fileHandle );
errcode = CE_ERROR_PARSING_SOURCE;
return NULL;
}
// start the decompress with the jpeg engine.
if ( !jpeg_start_decompress(&jpegInfo) )
{
jpeg_destroy_decompress(&jpegInfo);
fclose( infile );
//g_pFullFileSystem->Close( fileHandle );
errcode = CE_ERROR_PARSING_SOURCE;
return NULL;
}
// We only support 24-bit JPEG's
if ( jpegInfo.out_color_space != JCS_RGB || jpegInfo.output_components != 3 )
{
jpeg_destroy_decompress(&jpegInfo);
fclose( infile );
//g_pFullFileSystem->Close( fileHandle );
errcode = CE_SOURCE_FILE_SIZE_NOT_SUPPORTED;
return NULL;
}
// now that we've started the decompress with the jpeg lib, we have the attributes of the
// image ready to be read out of the decompress struct.
row_stride = jpegInfo.output_width * 4;
image_height = jpegInfo.image_height;
image_width = jpegInfo.image_width;
int mem_required = jpegInfo.image_height * row_stride;
// allocate the memory to read the image data into.
unsigned char *buf = (unsigned char *)malloc(mem_required);
if (buf == NULL)
{
jpeg_destroy_decompress(&jpegInfo);
fclose( infile );
//g_pFullFileSystem->Close( fileHandle );
errcode = CE_MEMORY_ERROR;
return NULL;
}
// read in all the scan lines of the image into our image data buffer.
bool working = true;
while (working && (jpegInfo.output_scanline < jpegInfo.output_height))
{
unsigned char *pRow = &(buf[cur_row * row_stride]);
row_pointer[0] = pRow;
if ( !jpeg_read_scanlines(&jpegInfo, row_pointer, 1) )
{
working = false;
}
// Expand the row RGB -> RGBA
for ( int x = image_width-1 ; x >= 0 ; --x )
{
pRow[x*4+3] = 0xff;
pRow[x*4+2] = pRow[x*3+2];
pRow[x*4+1] = pRow[x*3+1];
pRow[x*4] = pRow[x*3];
}
++cur_row;
}
// Clean up
fclose( infile );
//g_pFullFileSystem->Close( fileHandle );
jpeg_destroy_decompress(&jpegInfo);
// Check success status
if (!working)
{
free(buf);
errcode = CE_ERROR_PARSING_SOURCE;
return NULL;
}
// OK!
width = image_width;
height = image_height;
errcode = CE_SUCCESS;
return buf;
#else
errcode = CE_SOURCE_FILE_FORMAT_NOT_SUPPORTED;
return NULL;
#endif
}
static void ReadPNGData( png_structp png_ptr, png_bytep outBytes, png_size_t byteCountToRead )
{
// Cast pointer
CUtlBuffer *pBuf = (CUtlBuffer *)png_get_io_ptr( png_ptr );
Assert( pBuf );
// Check for IO error
if ( pBuf->TellGet() + (int)byteCountToRead > pBuf->TellPut() )
{
// Attempt to read past the end of the buffer.
// Use longjmp to report the error
png_longjmp( png_ptr, 1 );
}
// Read the bytes
pBuf->Get( outBytes, byteCountToRead );
}
unsigned char *ImgUtl_ReadPNGAsRGBA( const char *pngPath, int &width, int &height, ConversionErrorType &errcode )
{
#if !defined( _X360 )
// Just load the whole file into a memory buffer
CUtlBuffer bufFileContents;
if ( !g_pFullFileSystem->ReadFile( pngPath, NULL, bufFileContents ) )
{
errcode = CE_CANT_OPEN_SOURCE_FILE;
return NULL;
}
// Load it
return ImgUtl_ReadPNGAsRGBAFromBuffer( bufFileContents, width, height, errcode );
#else
errcode = CE_SOURCE_FILE_FORMAT_NOT_SUPPORTED;
return NULL;
#endif
}
unsigned char *ImgUtl_ReadPNGAsRGBAFromBuffer( CUtlBuffer &buffer, int &width, int &height, ConversionErrorType &errcode )
{
#if !defined( _X360 )
png_const_bytep pngData = (png_const_bytep)buffer.Base();
if (png_sig_cmp( pngData, 0, 8))
{
errcode = CE_ERROR_PARSING_SOURCE;
return NULL;
}
png_structp png_ptr = NULL;
png_infop info_ptr = NULL;
/* could pass pointers to user-defined error handlers instead of NULLs: */
png_ptr = png_create_read_struct( PNG_LIBPNG_VER_STRING, NULL, NULL, NULL );
if (!png_ptr)
{
errcode = CE_MEMORY_ERROR;
return NULL;
}
unsigned char *pResultData = NULL;
png_bytepp row_pointers = NULL;
info_ptr = png_create_info_struct( png_ptr );
if ( !info_ptr )
{
errcode = CE_MEMORY_ERROR;
fail:
png_destroy_read_struct( &png_ptr, &info_ptr, NULL );
if ( row_pointers )
{
free( row_pointers );
}
if ( pResultData )
{
free( pResultData );
}
return NULL;
}
/* setjmp() must be called in every function that calls a PNG-reading
* libpng function */
if ( setjmp( png_jmpbuf(png_ptr) ) )
{
errcode = CE_ERROR_PARSING_SOURCE;
goto fail;
}
png_set_read_fn( png_ptr, &buffer, ReadPNGData );
png_read_info( png_ptr, info_ptr ); /* read all PNG info up to image data */
/* alternatively, could make separate calls to png_get_image_width(),
* etc., but want bit_depth and color_type for later [don't care about
* compression_type and filter_type => NULLs] */
int bit_depth;
int color_type;
uint32 png_width;
uint32 png_height;
png_get_IHDR( png_ptr, info_ptr, &png_width, &png_height, &bit_depth, &color_type, NULL, NULL, NULL );
width = png_width;
height = png_height;
png_uint_32 rowbytes;
/* expand palette images to RGB, low-bit-depth grayscale images to 8 bits,
* transparency chunks to full alpha channel; strip 16-bit-per-sample
* images to 8 bits per sample; and convert grayscale to RGB[A] */
if (color_type == PNG_COLOR_TYPE_PALETTE)
png_set_expand( png_ptr );
if (color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8)
png_set_expand( png_ptr );
if (png_get_valid( png_ptr, info_ptr, PNG_INFO_tRNS ) )
png_set_expand( png_ptr );
if (bit_depth == 16)
png_set_strip_16( png_ptr );
if (color_type == PNG_COLOR_TYPE_GRAY ||
color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
png_set_gray_to_rgb( png_ptr );
// Force in an alpha channel
if ( !( color_type & PNG_COLOR_MASK_ALPHA ) )
{
png_set_add_alpha(png_ptr, 255, PNG_FILLER_AFTER);
}
/*
double gamma;
if (png_get_gAMA(png_ptr, info_ptr, &gamma))
png_set_gamma(png_ptr, display_exponent, gamma);
*/
/* all transformations have been registered; now update info_ptr data,
* get rowbytes and channels, and allocate image memory */
png_read_update_info( png_ptr, info_ptr );
rowbytes = png_get_rowbytes( png_ptr, info_ptr );
png_byte channels = (int)png_get_channels( png_ptr, info_ptr );
if ( channels != 4 )
{
Assert( channels == 4 );
errcode = CE_SOURCE_FILE_FORMAT_NOT_SUPPORTED;
goto fail;
}
row_pointers = (png_bytepp)malloc( height*sizeof(png_bytep) );
pResultData = (unsigned char *)malloc( rowbytes*height );
if ( row_pointers == NULL || pResultData == NULL )
{
errcode = CE_MEMORY_ERROR;
goto fail;
}
/* set the individual row_pointers to point at the correct offsets */
for ( int i = 0; i < height; ++i)
row_pointers[i] = pResultData + i*rowbytes;
/* now we can go ahead and just read the whole image */
png_read_image( png_ptr, row_pointers );
png_read_end(png_ptr, NULL);
free( row_pointers );
row_pointers = NULL;
// Clean up
png_destroy_read_struct( &png_ptr, &info_ptr, NULL );
// OK!
width = png_width;
height = png_height;
errcode = CE_SUCCESS;
return pResultData;
#else
errcode = CE_SOURCE_FILE_FORMAT_NOT_SUPPORTED;
return NULL;
#endif
}
unsigned char *ImgUtl_ReadBMPAsRGBA( const char *bmpPath, int &width, int &height, ConversionErrorType &errcode )
{
#ifdef WIN32
// Load up bitmap
HBITMAP hBitmap = (HBITMAP)LoadImage(NULL, bmpPath, IMAGE_BITMAP, 0, 0, LR_CREATEDIBSECTION | LR_LOADFROMFILE | LR_DEFAULTSIZE);
// Handle failure
if ( hBitmap == NULL)
{
// !KLUDGE! Try to detect what went wrong
FILE *fp = fopen( bmpPath, "rb" );
if (fp == NULL)
{
errcode = CE_CANT_OPEN_SOURCE_FILE;
}
else
{
errcode = CE_ERROR_PARSING_SOURCE;
}
return NULL;
}
BITMAP bitmap;
GetObject(hBitmap, sizeof(bitmap), &bitmap);
BITMAPINFO *bitmapInfo;
bool bUseColorTable = false;
if (bitmap.bmBitsPixel == 24 || bitmap.bmBitsPixel == 32)
{
bitmapInfo = (BITMAPINFO *)malloc(sizeof(BITMAPINFO));
}
else if (bitmap.bmBitsPixel == 8 || bitmap.bmBitsPixel == 4 || bitmap.bmBitsPixel == 1)
{
int colorsUsed = 1 << bitmap.bmBitsPixel;
bitmapInfo = (BITMAPINFO *)malloc(colorsUsed * sizeof(RGBQUAD) + sizeof(BITMAPINFO));
bUseColorTable = true;
}
else
{
DeleteObject(hBitmap);
errcode = CE_SOURCE_FILE_BMP_FORMAT_NOT_SUPPORTED;
return NULL;
}
memset(bitmapInfo, 0, sizeof(BITMAPINFO));
bitmapInfo->bmiHeader.biSize = sizeof(bitmapInfo->bmiHeader);
if (bUseColorTable)
{
bitmapInfo->bmiHeader.biBitCount = bitmap.bmBitsPixel; // need to specify the bits per pixel so GDI will generate a color table for us.
}
HDC dc = CreateCompatibleDC(NULL);
int retcode = GetDIBits(dc, hBitmap, 0, bitmap.bmHeight, NULL, bitmapInfo, DIB_RGB_COLORS);
DeleteDC(dc);
if (retcode == 0)
{
// error getting the bitmap info for some reason.
free(bitmapInfo);
errcode = CE_SOURCE_FILE_BMP_FORMAT_NOT_SUPPORTED;
return NULL;
}
int nDestStride = 4 * bitmap.bmWidth;
int mem_required = nDestStride * bitmap.bmHeight; // mem required for copying the data out into RGBA format.
unsigned char *buf = (unsigned char *)malloc(mem_required);
if (buf == NULL)
{
free(bitmapInfo);
errcode = CE_MEMORY_ERROR;
return NULL;
}
if (bitmapInfo->bmiHeader.biBitCount == 32)
{
for (int y = 0; y < bitmap.bmHeight; ++y)
{
unsigned char *pDest = buf + nDestStride * ( ( bitmap.bmHeight - 1 ) - y ); // BMPs are stored upside down
const unsigned char *pSrc = (unsigned char *)(bitmap.bmBits) + (y * bitmap.bmWidthBytes);
for (int x = 0; x < bitmap.bmWidth; ++x)
{
// Swap BGR -> RGB while copying data
pDest[0] = pSrc[2]; // R
pDest[1] = pSrc[1]; // G
pDest[2] = pSrc[0]; // B
pDest[3] = pSrc[3]; // A
pSrc += 4;
pDest += 4;
}
}
}
else if (bitmapInfo->bmiHeader.biBitCount == 24)
{
for (int y = 0; y < bitmap.bmHeight; ++y)
{
unsigned char *pDest = buf + nDestStride * ( ( bitmap.bmHeight - 1 ) - y ); // BMPs are stored upside down
const unsigned char *pSrc = (unsigned char *)(bitmap.bmBits) + (y * bitmap.bmWidthBytes);
for (int x = 0; x < bitmap.bmWidth; ++x)
{
// Swap BGR -> RGB while copying data
pDest[0] = pSrc[2]; // R
pDest[1] = pSrc[1]; // G
pDest[2] = pSrc[0]; // B
pDest[3] = 0xff; // A
pSrc += 3;
pDest += 4;
}
}
}
else if (bitmapInfo->bmiHeader.biBitCount == 8)
{
// 8-bit 256 color bitmap.
for (int y = 0; y < bitmap.bmHeight; ++y)
{
unsigned char *pDest = buf + nDestStride * ( ( bitmap.bmHeight - 1 ) - y ); // BMPs are stored upside down
const unsigned char *pSrc = (unsigned char *)(bitmap.bmBits) + (y * bitmap.bmWidthBytes);
for (int x = 0; x < bitmap.bmWidth; ++x)
{
// compute the color map entry for this pixel
int colorTableEntry = *pSrc;
// get the color for this color map entry.
RGBQUAD *rgbQuad = &(bitmapInfo->bmiColors[colorTableEntry]);
// copy the color values for this pixel to the destination buffer.
pDest[0] = rgbQuad->rgbRed;
pDest[1] = rgbQuad->rgbGreen;
pDest[2] = rgbQuad->rgbBlue;
pDest[3] = 0xff;
++pSrc;
pDest += 4;
}
}
}
else if (bitmapInfo->bmiHeader.biBitCount == 4)
{
// 4-bit 16 color bitmap.
for (int y = 0; y < bitmap.bmHeight; ++y)
{
unsigned char *pDest = buf + nDestStride * ( ( bitmap.bmHeight - 1 ) - y ); // BMPs are stored upside down
const unsigned char *pSrc = (unsigned char *)(bitmap.bmBits) + (y * bitmap.bmWidthBytes);
// Two pixels at a time
for (int x = 0; x < bitmap.bmWidth; x += 2)
{
// get the color table entry for this pixel
int colorTableEntry = (0xf0 & *pSrc) >> 4;
// get the color values for this pixel's color table entry.
RGBQUAD *rgbQuad = &(bitmapInfo->bmiColors[colorTableEntry]);
// copy the pixel's color values to the destination buffer.
pDest[0] = pSrc[2]; // R
pDest[1] = pSrc[1]; // G
pDest[2] = pSrc[0]; // B
pDest[3] = 0xff; // A
// make sure we haven't reached the end of the row.
if ((x + 1) > bitmap.bmWidth)
{
break;
}
pDest += 4;
// get the color table entry for this pixel.
colorTableEntry = 0x0f & *pSrc;
// get the color values for this pixel's color table entry.
rgbQuad = &(bitmapInfo->bmiColors[colorTableEntry]);
// copy the pixel's color values to the destination buffer.
pDest[0] = pSrc[2]; // R
pDest[1] = pSrc[1]; // G
pDest[2] = pSrc[0]; // B
pDest[3] = 0xff; // A
++pSrc;
pDest += 4;
}
}
}
else if (bitmapInfo->bmiHeader.biBitCount == 1)
{
// 1-bit monochrome bitmap.
for (int y = 0; y < bitmap.bmHeight; ++y)
{
unsigned char *pDest = buf + nDestStride * ( ( bitmap.bmHeight - 1 ) - y ); // BMPs are stored upside down
const unsigned char *pSrc = (unsigned char *)(bitmap.bmBits) + (y * bitmap.bmWidthBytes);
// Eight pixels at a time
int x = 0;
while (x < bitmap.bmWidth)
{
RGBQUAD *rgbQuad = NULL;
int bitMask = 0x80;
// go through all 8 bits in this byte to get all 8 pixel colors.
do
{
// get the value of the bit for this pixel.
int bit = *pSrc & bitMask;
// bit will either be 0 or non-zero since there are only two colors.
if (bit == 0)
{
rgbQuad = &(bitmapInfo->bmiColors[0]);
}
else
{
rgbQuad = &(bitmapInfo->bmiColors[1]);
}
// copy this pixel's color values into the destination buffer.
pDest[0] = pSrc[2]; // R
pDest[1] = pSrc[1]; // G
pDest[2] = pSrc[0]; // B
pDest[3] = 0xff; // A
pDest += 4;
// go to the next pixel.
++x;
bitMask = bitMask >> 1;
} while ((x < bitmap.bmWidth) && (bitMask > 0));
++pSrc;
}
}
}
else
{
free(bitmapInfo);
free(buf);
DeleteObject(hBitmap);
errcode = CE_SOURCE_FILE_BMP_FORMAT_NOT_SUPPORTED;
return NULL;
}
free(bitmapInfo);
DeleteObject(hBitmap);
// OK!
width = bitmap.bmWidth;
height = bitmap.bmHeight;
errcode = CE_SUCCESS;
return buf;
#else
errcode = CE_SOURCE_FILE_FORMAT_NOT_SUPPORTED;
return NULL;
#endif
}
unsigned char *ImgUtl_ReadImageAsRGBA( const char *path, int &width, int &height, ConversionErrorType &errcode )
{
// Split out the file extension
const char *pExt = V_GetFileExtension( path );
if ( pExt )
{
if ( !Q_stricmp(pExt, "vtf") )
{
return ImgUtl_ReadVTFAsRGBA( path, width, height, errcode );
}
if ( !Q_stricmp(pExt, "bmp") )
{
return ImgUtl_ReadBMPAsRGBA( path, width, height, errcode );
}
if ( !Q_stricmp(pExt, "jpg") || !Q_stricmp(pExt, "jpeg") )
{
return ImgUtl_ReadJPEGAsRGBA( path, width, height, errcode );
}
if ( !Q_stricmp(pExt, "png") )
{
return ImgUtl_ReadPNGAsRGBA( path, width, height, errcode );
}
if ( !Q_stricmp(pExt, "tga") )
{
TGAHeader header;
return ImgUtl_ReadTGAAsRGBA( path, width, height, errcode, header );
}
}
errcode = CE_SOURCE_FILE_FORMAT_NOT_SUPPORTED;
return NULL;
}
// resizes the file specified by tgaPath so that it has dimensions that are
// powers-of-two and is equal to or smaller than (nMaxWidth)x(nMaxHeight).
// also converts from 24-bit RGB to 32-bit RGB (with 8-bit alpha)
ConversionErrorType ImgUtl_ConvertTGA(const char *tgaPath, int nMaxWidth/*=-1*/, int nMaxHeight/*=-1*/)
{
int tgaWidth = 0, tgaHeight = 0;
ConversionErrorType errcode;
TGAHeader tgaHeader;
unsigned char *srcBuffer = ImgUtl_ReadTGAAsRGBA(tgaPath, tgaWidth, tgaHeight, errcode, tgaHeader);
if (srcBuffer == NULL)
{
return errcode;
}
int paddedImageWidth, paddedImageHeight;
if ((tgaWidth <= 0) || (tgaHeight <= 0))
{
free(srcBuffer);
return CE_ERROR_PARSING_SOURCE;
}
// get the nearest power of two that is greater than the width of the image.
paddedImageWidth = tgaWidth;
if (!IsPowerOfTwo(paddedImageWidth))
{
// width is not a power of two, calculate the next highest power of two value.
int i = 1;
while (paddedImageWidth > 1)
{
paddedImageWidth = paddedImageWidth >> 1;
++i;
}
paddedImageWidth = paddedImageWidth << i;
}
// make sure the width is less than or equal to nMaxWidth
if (nMaxWidth != -1 && paddedImageWidth > nMaxWidth)
{
paddedImageWidth = nMaxWidth;
}
// get the nearest power of two that is greater than the height of the image
paddedImageHeight = tgaHeight;
if (!IsPowerOfTwo(paddedImageHeight))
{
// height is not a power of two, calculate the next highest power of two value.
int i = 1;
while (paddedImageHeight > 1)
{
paddedImageHeight = paddedImageHeight >> 1;
++i;
}
paddedImageHeight = paddedImageHeight << i;
}
// make sure the height is less than or equal to nMaxHeight
if (nMaxHeight != -1 && paddedImageHeight > nMaxHeight)
{
paddedImageHeight = nMaxHeight;
}
// compute the amount of stretching that needs to be done to both width and height to get the image to fit.
float widthRatio = (float)paddedImageWidth / tgaWidth;
float heightRatio = (float)paddedImageHeight / tgaHeight;
int finalWidth;
int finalHeight;
// compute the final dimensions of the stretched image.
if (widthRatio < heightRatio)
{
finalWidth = paddedImageWidth;
finalHeight = (int)(tgaHeight * widthRatio + 0.5f);
// i.e. for 1x1 size pixels in the resized image we will take color from sourceRatio x sourceRatio sized pixels in the source image.
}
else if (heightRatio < widthRatio)
{
finalHeight = paddedImageHeight;
finalWidth = (int)(tgaWidth * heightRatio + 0.5f);
}
else
{
finalHeight = paddedImageHeight;
finalWidth = paddedImageWidth;
}
unsigned char *resizeBuffer = (unsigned char *)malloc(finalWidth * finalHeight * 4);
// do the actual stretching
ImgUtl_StretchRGBAImage(srcBuffer, tgaWidth, tgaHeight, resizeBuffer, finalWidth, finalHeight);
free(srcBuffer); // don't need this anymore.
///////////////////////////////////////////////////////////////////////
///// need to pad the image so both dimensions are power of two's /////
///////////////////////////////////////////////////////////////////////
unsigned char *finalBuffer = (unsigned char *)malloc(paddedImageWidth * paddedImageHeight * 4);
ImgUtl_PadRGBAImage(resizeBuffer, finalWidth, finalHeight, finalBuffer, paddedImageWidth, paddedImageHeight);
FILE *outfile = fopen(tgaPath, "wb");
if (outfile == NULL)
{
free(resizeBuffer);
free(finalBuffer);
return CE_ERROR_WRITING_OUTPUT_FILE;
}
tgaHeader.width = paddedImageWidth;
tgaHeader.height = paddedImageHeight;
WriteTGAHeader(outfile, tgaHeader);
// Write the image data --- remember that TGA uses BGRA data
int numPixels = paddedImageWidth * paddedImageHeight;
for (int i = 0 ; i < numPixels ; ++i )
{
fputc( finalBuffer[i*4 + 2], outfile ); // B
fputc( finalBuffer[i*4 + 1], outfile ); // G
fputc( finalBuffer[i*4 ], outfile ); // R
fputc( finalBuffer[i*4 + 3], outfile ); // A
}
fclose(outfile);
free(resizeBuffer);
free(finalBuffer);
return CE_SUCCESS;
}
// resize by stretching (or compressing) an RGBA image pointed to by srcBuf into the buffer pointed to by destBuf.
// the buffers are assumed to be sized appropriately to accomidate RGBA images of the given widths and heights.
ConversionErrorType ImgUtl_StretchRGBAImage(const unsigned char *srcBuf, const int srcWidth, const int srcHeight,
unsigned char *destBuf, const int destWidth, const int destHeight)
{
if ((srcBuf == NULL) || (destBuf == NULL))
{
return CE_CANT_OPEN_SOURCE_FILE;
}
int destRow,destColumn;
float ratioX = (float)srcWidth / (float)destWidth;
float ratioY = (float)srcHeight / (float)destHeight;
// loop through all the pixels in the destination image.
for (destRow = 0; destRow < destHeight; ++destRow)
{
for (destColumn = 0; destColumn < destWidth; ++destColumn)
{
// calculate the center of the pixel in the source image.
float srcCenterX = ratioX * (destColumn + 0.5f);
float srcCenterY = ratioY * (destRow + 0.5f);
// calculate the starting and ending coords for this destination pixel in the source image.
float srcStartX = srcCenterX - (ratioX / 2.0f);
if (srcStartX < 0.0f)
{
srcStartX = 0.0f; // this should never happen, but just in case.
}
float srcStartY = srcCenterY - (ratioY / 2.0f);
if (srcStartY < 0.0f)
{
srcStartY = 0.0f; // this should never happen, but just in case.
}
float srcEndX = srcCenterX + (ratioX / 2.0f);
if (srcEndX > srcWidth)
{
srcEndX = srcWidth; // this should never happen, but just in case.
}
float srcEndY = srcCenterY + (ratioY / 2.0f);
if (srcEndY > srcHeight)
{
srcEndY = srcHeight; // this should never happen, but just in case.
}
// Calculate the percentage of each source pixels' contribution to the destination pixel color.
float srcCurrentX; // initialized at the start of the y loop.
float srcCurrentY = srcStartY;
float destRed = 0.0f;
float destGreen = 0.0f;
float destBlue = 0.0f;
float destAlpha = 0.0f;
//// loop for the parts of the source image that will contribute color to the destination pixel.
while (srcCurrentY < srcEndY)
{
float srcCurrentEndY = (float)((int)srcCurrentY + 1);
if (srcCurrentEndY > srcEndY)
{
srcCurrentEndY = srcEndY;
}
float srcCurrentHeight = srcCurrentEndY - srcCurrentY;
srcCurrentX = srcStartX;
while (srcCurrentX < srcEndX)
{
float srcCurrentEndX = (float)((int)srcCurrentX + 1);
if (srcCurrentEndX > srcEndX)
{
srcCurrentEndX = srcEndX;
}
float srcCurrentWidth = srcCurrentEndX - srcCurrentX;
// compute the percentage of the destination pixel's color this source pixel will contribute.
float srcColorPercentage = (srcCurrentWidth / ratioX) * (srcCurrentHeight / ratioY);
int srcCurrentPixelX = (int)srcCurrentX;
int srcCurrentPixelY = (int)srcCurrentY;
// get the color values for this source pixel.
unsigned char srcCurrentRed = srcBuf[(srcCurrentPixelY * srcWidth * 4) + (srcCurrentPixelX * 4)];
unsigned char srcCurrentGreen = srcBuf[(srcCurrentPixelY * srcWidth * 4) + (srcCurrentPixelX * 4) + 1];
unsigned char srcCurrentBlue = srcBuf[(srcCurrentPixelY * srcWidth * 4) + (srcCurrentPixelX * 4) + 2];
unsigned char srcCurrentAlpha = srcBuf[(srcCurrentPixelY * srcWidth * 4) + (srcCurrentPixelX * 4) + 3];
// add the color contribution from this source pixel to the destination pixel.
destRed += srcCurrentRed * srcColorPercentage;
destGreen += srcCurrentGreen * srcColorPercentage;
destBlue += srcCurrentBlue * srcColorPercentage;
destAlpha += srcCurrentAlpha * srcColorPercentage;
srcCurrentX = srcCurrentEndX;
}
srcCurrentY = srcCurrentEndY;
}
// assign the computed color to the destination pixel, round to the nearest value. Make sure the value doesn't exceed 255.
destBuf[(destRow * destWidth * 4) + (destColumn * 4)] = min((int)(destRed + 0.5f), 255);
destBuf[(destRow * destWidth * 4) + (destColumn * 4) + 1] = min((int)(destGreen + 0.5f), 255);
destBuf[(destRow * destWidth * 4) + (destColumn * 4) + 2] = min((int)(destBlue + 0.5f), 255);
destBuf[(destRow * destWidth * 4) + (destColumn * 4) + 3] = min((int)(destAlpha + 0.5f), 255);
} // column loop
} // row loop
return CE_SUCCESS;
}
ConversionErrorType ImgUtl_PadRGBAImage(const unsigned char *srcBuf, const int srcWidth, const int srcHeight,
unsigned char *destBuf, const int destWidth, const int destHeight)
{
if ((srcBuf == NULL) || (destBuf == NULL))
{
return CE_CANT_OPEN_SOURCE_FILE;
}
memset(destBuf, 0, destWidth * destHeight * 4);
if ((destWidth < srcWidth) || (destHeight < srcHeight))
{
return CE_ERROR_PARSING_SOURCE;
}
if ((srcWidth == destWidth) && (srcHeight == destHeight))
{
// no padding is needed, just copy the buffer straight over and call it done.
memcpy(destBuf, srcBuf, destWidth * destHeight * 4);
return CE_SUCCESS;
}
if (destWidth == srcWidth)
{
// only the top and bottom of the image need padding.
// do this separately since we can do this more efficiently than the other cases.
int numRowsToPad = (destHeight - srcHeight) / 2;
memcpy(destBuf + (numRowsToPad * destWidth * 4), srcBuf, srcWidth * srcHeight * 4);
}
else
{
int numColumnsToPad = (destWidth - srcWidth) / 2;
int numRowsToPad = (destHeight - srcHeight) / 2;
int lastRow = numRowsToPad + srcHeight;
int row;
for (row = numRowsToPad; row < lastRow; ++row)
{
unsigned char * destOffset = destBuf + (row * destWidth * 4) + (numColumnsToPad * 4);
const unsigned char * srcOffset = srcBuf + ((row - numRowsToPad) * srcWidth * 4);
memcpy(destOffset, srcOffset, srcWidth * 4);
}
}
return CE_SUCCESS;
}
// convert TGA file at the given location to a VTF file of the same root name at the same location.
ConversionErrorType ImgUtl_ConvertTGAToVTF(const char *tgaPath, int nMaxWidth/*=-1*/, int nMaxHeight/*=-1*/ )
{
FILE *infile = fopen(tgaPath, "rb");
if (infile == NULL)
{
Msg( "Failed to open TGA: %s\n", tgaPath);
return CE_CANT_OPEN_SOURCE_FILE;
}
// read out the header of the image.
TGAHeader header;
ImgUtl_ReadTGAHeader(infile, header);
// check to make sure that the TGA has the proper dimensions and size.
if (!IsPowerOfTwo(header.width) || !IsPowerOfTwo(header.height))
{
fclose(infile);
Msg( "Failed to open TGA - size dimensions (%d, %d) not power of 2: %s\n", header.width, header.height, tgaPath);
return CE_SOURCE_FILE_SIZE_NOT_SUPPORTED;
}
// check to make sure that the TGA isn't too big, if we care.
if ( ( nMaxWidth != -1 && header.width > nMaxWidth ) || ( nMaxHeight != -1 && header.height > nMaxHeight ) )
{
fclose(infile);
Msg( "Failed to open TGA - dimensions too large (%d, %d) (max: %d, %d): %s\n", header.width, header.height, nMaxWidth, nMaxHeight, tgaPath);
return CE_SOURCE_FILE_SIZE_NOT_SUPPORTED;
}
int imageMemoryFootprint = header.width * header.height * header.bits / 8;
CUtlBuffer inbuf(0, imageMemoryFootprint);
// read in the image
int nBytesRead = fread(inbuf.Base(), imageMemoryFootprint, 1, infile);
fclose(infile);
inbuf.SeekPut( CUtlBuffer::SEEK_HEAD, nBytesRead );
// load vtex_dll.dll and get the interface to it.
CSysModule *vtexmod = Sys_LoadModule("vtex_dll");
if (vtexmod == NULL)
{
Msg( "Failed to open TGA conversion module vtex_dll: %s\n", tgaPath);
return CE_ERROR_LOADING_DLL;
}
CreateInterfaceFn factory = Sys_GetFactory(vtexmod);
if (factory == NULL)
{
Sys_UnloadModule(vtexmod);
Msg( "Failed to open TGA conversion module vtex_dll Factory: %s\n", tgaPath);
return CE_ERROR_LOADING_DLL;
}
IVTex *vtex = (IVTex *)factory(IVTEX_VERSION_STRING, NULL);
if (vtex == NULL)
{
Sys_UnloadModule(vtexmod);
Msg( "Failed to open TGA conversion module vtex_dll Factory (is null): %s\n", tgaPath);
return CE_ERROR_LOADING_DLL;
}
char *vtfParams[4];
// the 0th entry is skipped cause normally thats the program name.
vtfParams[0] = "";
vtfParams[1] = "-quiet";
vtfParams[2] = "-dontusegamedir";
vtfParams[3] = (char *)tgaPath;
// call vtex to do the conversion.
vtex->VTex(4, vtfParams); // how do we know this works?
Sys_UnloadModule(vtexmod);
return CE_SUCCESS;
}
static void DoCopyFile( const char *source, const char *destination )
{
#if defined( WIN32 )
CopyFile( source, destination, true );
#elif defined( OSX )
copyfile( source, destination, NULL, COPYFILE_ALL );
#elif defined( ENGINE_DLL )
::COM_CopyFile( source, destination );
#elif REPLAY_DLL
g_pEngine->CopyFile( source, destination );
#else
engine->CopyLocalFile( source, destination );
#endif
}
static void DoDeleteFile( const char *filename )
{
#ifdef WIN32
DeleteFile( filename );
#else
unlink( filename );
#endif
}
ConversionErrorType ImgUtl_ConvertToVTFAndDumpVMT( const char *pInPath, const char *pMaterialsSubDir, int nMaxWidth/*=-1*/, int nMaxHeight/*=-1*/ )
{
#ifndef _XBOX
if ((pInPath == NULL) || (pInPath[0] == 0))
{
return CE_ERROR_PARSING_SOURCE;
}
ConversionErrorType nErrorCode = CE_SUCCESS;
// get the extension of the file we're to convert
char extension[MAX_PATH];
const char *constchar = pInPath + strlen(pInPath);
while ((constchar > pInPath) && (*(constchar-1) != '.'))
{
--constchar;
}
Q_strncpy(extension, constchar, MAX_PATH);
bool deleteIntermediateTGA = false;
bool deleteIntermediateVTF = false;
bool convertTGAToVTF = true;
char tgaPath[MAX_PATH*2];
char *c;
bool failed = false;
Q_strncpy(tgaPath, pInPath, sizeof(tgaPath));
// Construct a TGA version if necessary
if (stricmp(extension, "tga"))
{
// It is not a TGA file, so create a temporary file name for the TGA you have to create
c = tgaPath + strlen(tgaPath);
while ((c > tgaPath) && (*(c-1) != '\\') && (*(c-1) != '/'))
{
--c;
}
*c = 0;
char origpath[MAX_PATH*2];
Q_strncpy(origpath, tgaPath, sizeof(origpath));
// Look for an empty temp file - find the first one that doesn't exist.
int index = 0;
do {
Q_snprintf(tgaPath, sizeof(tgaPath), "%stemp%d.tga", origpath, index);
++index;
} while (_access(tgaPath, 0) != -1);
// Convert the other formats to TGA
// jpeg files
//
if (!stricmp(extension, "jpg") || !stricmp(extension, "jpeg"))
{
// convert from the jpeg file format to the TGA file format
nErrorCode = ImgUtl_ConvertJPEGToTGA(pInPath, tgaPath, false);
if (nErrorCode == CE_SUCCESS)
{
deleteIntermediateTGA = true;
}
else
{
failed = true;
}
}
// bmp files
//
else if (!stricmp(extension, "bmp"))
{
// convert from the bmp file format to the TGA file format
nErrorCode = ImgUtl_ConvertBMPToTGA(pInPath, tgaPath);
if (nErrorCode == CE_SUCCESS)
{
deleteIntermediateTGA = true;
}
else
{
failed = true;
}
}
// vtf files
//
else if (!stricmp(extension, "vtf"))
{
// if the file is already in the vtf format there's no need to convert it.
convertTGAToVTF = false;
}
}
// if we now have a TGA file, convert it to VTF
if (convertTGAToVTF && !failed)
{
nErrorCode = ImgUtl_ConvertTGA( tgaPath, nMaxWidth, nMaxHeight ); // resize TGA so that it has power-of-two dimensions with a max size of (nMaxWidth)x(nMaxHeight).
if (nErrorCode != CE_SUCCESS)
{
failed = true;
}
if (!failed)
{
char tempPath[MAX_PATH*2];
Q_strncpy(tempPath, tgaPath, sizeof(tempPath));
nErrorCode = ImgUtl_ConvertTGAToVTF( tempPath, nMaxWidth, nMaxHeight );
if (nErrorCode == CE_SUCCESS)
{
deleteIntermediateVTF = true;
}
else
{
Msg( "Failed to convert TGA to VTF: %s\n", tempPath);
failed = true;
}
}
}
// At this point everything should be a VTF file
char finalPath[MAX_PATH*2];
finalPath[0] = 0;
char vtfPath[MAX_PATH*2];
vtfPath[0] = 0;
// If we haven't failed so far, create a VMT to go with this VTF
if (!failed)
{
// If I had to convert from another filetype (i.e. the original was NOT a .vtf)
if ( convertTGAToVTF )
{
Q_strncpy(vtfPath, tgaPath, sizeof(vtfPath));
// rename the tga file to be a vtf file.
c = vtfPath + strlen(vtfPath);
while ((c > vtfPath) && (*(c-1) != '.'))
{
--c;
}
*c = 0;
Q_strncat(vtfPath, "vtf", sizeof(vtfPath), COPY_ALL_CHARACTERS);
}
else
{
// We were handed a vtf file originally, so use it.
Q_strncpy(vtfPath, pInPath, sizeof(vtfPath));
}
// get the vtfFilename from the path.
const char *vtfFilename = pInPath + strlen(pInPath);
while ((vtfFilename > pInPath) && (*(vtfFilename-1) != '\\') && (*(vtfFilename-1) != '/'))
{
--vtfFilename;
}
// Create a safe version of pOutDir with corrected slashes
char szOutDir[MAX_PATH*2];
V_strcpy_safe( szOutDir, IsPosix() ? "/materials/" : "\\materials\\" );
if ( pMaterialsSubDir[0] == '\\' || pMaterialsSubDir[0] == '/' )
pMaterialsSubDir = pMaterialsSubDir + 1;
V_strcat_safe(szOutDir, pMaterialsSubDir, sizeof(szOutDir) );
Q_StripTrailingSlash( szOutDir );
Q_AppendSlash( szOutDir, sizeof(szOutDir) );
Q_FixSlashes( szOutDir, CORRECT_PATH_SEPARATOR );
#ifdef ENGINE_DLL
Q_strncpy(finalPath, com_gamedir, sizeof(finalPath));
#elif REPLAY_DLL
Q_strncpy(finalPath, g_pEngine->GetGameDir(), sizeof(finalPath));
#else
Q_strncpy(finalPath, engine->GetGameDirectory(), sizeof(finalPath));
#endif
Q_strncat(finalPath, szOutDir, sizeof(finalPath), COPY_ALL_CHARACTERS);
Q_strncat(finalPath, vtfFilename, sizeof(finalPath), COPY_ALL_CHARACTERS);
c = finalPath + strlen(finalPath);
while ((c > finalPath) && (*(c-1) != '.'))
{
--c;
}
*c = 0;
Q_strncat(finalPath,"vtf", sizeof(finalPath), COPY_ALL_CHARACTERS);
// make sure the directory exists before we try to copy the file.
g_pFullFileSystem->CreateDirHierarchy(szOutDir + 1, "GAME");
//g_pFullFileSystem->CreateDirHierarchy("materials/VGUI/logos/", "GAME");
// write out the spray VMT file.
if ( strcmp(vtfPath, finalPath) ) // If they're not already the same
{
nErrorCode = ImgUtl_WriteGenericVMT(finalPath, pMaterialsSubDir);
if (nErrorCode != CE_SUCCESS)
{
failed = true;
}
if (!failed)
{
// copy vtf file to the final location, only if we're not already in vtf
DoCopyFile( vtfPath, finalPath );
}
}
}
// delete the intermediate VTF file if one was made.
if (deleteIntermediateVTF)
{
DoDeleteFile( vtfPath );
// the TGA->VTF conversion process generates a .txt file if one wasn't already there.
// in this case, delete the .txt file.
c = vtfPath + strlen(vtfPath);
while ((c > vtfPath) && (*(c-1) != '.'))
{
--c;
}
Q_strncpy(c, "txt", sizeof(vtfPath)-(c-vtfPath));
DoDeleteFile( vtfPath );
}
// delete the intermediate TGA file if one was made.
if (deleteIntermediateTGA)
{
DoDeleteFile( tgaPath );
}
return nErrorCode;
#endif
}
ConversionErrorType ImgUtl_WriteGenericVMT( const char *vtfPath, const char *pMaterialsSubDir )
{
if (vtfPath == NULL || pMaterialsSubDir == NULL )
{
return CE_ERROR_WRITING_OUTPUT_FILE;
}
// make the vmt filename
char vmtPath[MAX_PATH*4];
Q_strncpy(vmtPath, vtfPath, sizeof(vmtPath));
char *c = vmtPath + strlen(vmtPath);
while ((c > vmtPath) && (*(c-1) != '.'))
{
--c;
}
Q_strncpy(c, "vmt", sizeof(vmtPath) - (c - vmtPath));
// get the root filename for the vtf file
char filename[MAX_PATH];
while ((c > vmtPath) && (*(c-1) != '/') && (*(c-1) != '\\'))
{
--c;
}
int i = 0;
while ((*c != 0) && (*c != '.'))
{
filename[i++] = *(c++);
}
filename[i] = 0;
// create the vmt file.
FILE *vmtFile = fopen(vmtPath, "w");
if (vmtFile == NULL)
{
return CE_ERROR_WRITING_OUTPUT_FILE;
}
// make a copy of the subdir and remove any trailing slash
char szMaterialsSubDir[ MAX_PATH*2 ];
V_strcpy_safe( szMaterialsSubDir, pMaterialsSubDir );
V_StripTrailingSlash( szMaterialsSubDir );
// fix slashes
V_FixSlashes( szMaterialsSubDir );
// write the contents of the file.
fprintf(vmtFile, "\"UnlitGeneric\"\n{\n\t\"$basetexture\" \"%s%c%s\"\n\t\"$translucent\" \"1\"\n\t\"$ignorez\" \"1\"\n\t\"$vertexcolor\" \"1\"\n\t\"$vertexalpha\" \"1\"\n}\n", szMaterialsSubDir, CORRECT_PATH_SEPARATOR, filename);
fclose(vmtFile);
return CE_SUCCESS;
}
static void WritePNGData( png_structp png_ptr, png_bytep inBytes, png_size_t byteCountToWrite )
{
// Cast pointer
CUtlBuffer *pBuf = (CUtlBuffer *)png_get_io_ptr( png_ptr );
Assert( pBuf );
// Write the bytes
pBuf->Put( inBytes, byteCountToWrite );
// What? Put() returns void. No way to detect error?
}
static void FlushPNGData( png_structp png_ptr )
{
// We're writing to a memory buffer, it's a NOP
}
ConversionErrorType ImgUtl_WriteRGBAAsPNGToBuffer( const unsigned char *pRGBAData, int nWidth, int nHeight, CUtlBuffer &bufOutData, int nStride )
{
#if !defined( _X360 )
// Auto detect image stride
if ( nStride <= 0 )
{
nStride = nWidth*4;
}
/* could pass pointers to user-defined error handlers instead of NULLs: */
png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING,
NULL, NULL, NULL);
if (png_ptr == NULL)
{
return CE_MEMORY_ERROR;
}
ConversionErrorType errcode = CE_MEMORY_ERROR;
png_bytepp row_pointers = NULL;
png_infop info_ptr = png_create_info_struct(png_ptr);
if ( !info_ptr )
{
errcode = CE_MEMORY_ERROR;
fail:
if ( row_pointers )
{
free( row_pointers );
}
png_destroy_write_struct( &png_ptr, &info_ptr );
return errcode;
}
// We'll use the default setjmp / longjmp error handling.
if ( setjmp( png_jmpbuf(png_ptr) ) )
{
// Error "writing". But since we're writing to a memory bufferm,
// that just means we must have run out of memory
errcode = CE_MEMORY_ERROR;
goto fail;
}
// Setup stream writing callbacks
png_set_write_fn(png_ptr, (void *)&bufOutData, WritePNGData, FlushPNGData);
// Setup info structure
png_set_IHDR(png_ptr, info_ptr, nWidth, nHeight, 8, PNG_COLOR_TYPE_RGB_ALPHA,
PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
// !FIXME! Here we really should scan for the common case of
// an opaque image (all alpha=255) and strip the alpha channel
// in that case.
// Write the file header information.
png_write_info(png_ptr, info_ptr);
row_pointers = (png_bytepp)malloc( nHeight*sizeof(png_bytep) );
if ( row_pointers == NULL )
{
errcode = CE_MEMORY_ERROR;
goto fail;
}
/* set the individual row_pointers to point at the correct offsets */
for ( int i = 0; i < nHeight; ++i)
row_pointers[i] = const_cast<unsigned char *>(pRGBAData + i*nStride);
// Write the image
png_write_image(png_ptr, row_pointers);
/* It is REQUIRED to call this to finish writing the rest of the file */
png_write_end(png_ptr, info_ptr);
// Clean up, and we're done
free( row_pointers );
row_pointers = NULL;
png_destroy_write_struct(&png_ptr, &info_ptr);
return CE_SUCCESS;
#else
return CE_SOURCE_FILE_FORMAT_NOT_SUPPORTED;
#endif
}
//-----------------------------------------------------------------------------
// Purpose: Initialize destination --- called by jpeg_start_compress
// before any data is actually written.
//-----------------------------------------------------------------------------
METHODDEF(void) init_destination (j_compress_ptr cinfo)
{
JPEGDestinationManager_t *dest = ( JPEGDestinationManager_t *) cinfo->dest;
// Allocate the output buffer --- it will be released when done with image
dest->buffer = (byte *)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
JPEG_OUTPUT_BUF_SIZE * sizeof(byte));
dest->pub.next_output_byte = dest->buffer;
dest->pub.free_in_buffer = JPEG_OUTPUT_BUF_SIZE;
}
//-----------------------------------------------------------------------------
// Purpose: Empty the output buffer --- called whenever buffer fills up.
// Input : boolean -
//-----------------------------------------------------------------------------
METHODDEF(boolean) empty_output_buffer (j_compress_ptr cinfo)
{
JPEGDestinationManager_t *dest = ( JPEGDestinationManager_t * ) cinfo->dest;
CUtlBuffer *buf = dest->pBuffer;
// Add some data
buf->Put( dest->buffer, JPEG_OUTPUT_BUF_SIZE );
dest->pub.next_output_byte = dest->buffer;
dest->pub.free_in_buffer = JPEG_OUTPUT_BUF_SIZE;
return TRUE;
}
//-----------------------------------------------------------------------------
// Purpose: Terminate destination --- called by jpeg_finish_compress
// after all data has been written. Usually needs to flush buffer.
//
// NB: *not* called by jpeg_abort or jpeg_destroy; surrounding
// application must deal with any cleanup that should happen even
// for error exit.
//-----------------------------------------------------------------------------
METHODDEF(void) term_destination (j_compress_ptr cinfo)
{
JPEGDestinationManager_t *dest = (JPEGDestinationManager_t *) cinfo->dest;
size_t datacount = JPEG_OUTPUT_BUF_SIZE - dest->pub.free_in_buffer;
CUtlBuffer *buf = dest->pBuffer;
/* Write any data remaining in the buffer */
if (datacount > 0)
{
buf->Put( dest->buffer, datacount );
}
}
//-----------------------------------------------------------------------------
// Purpose: Set up functions for writing data to a CUtlBuffer instead of FILE *
//-----------------------------------------------------------------------------
GLOBAL(void) jpeg_UtlBuffer_dest (j_compress_ptr cinfo, CUtlBuffer *pBuffer )
{
JPEGDestinationManager_t *dest;
/* The destination object is made permanent so that multiple JPEG images
* can be written to the same file without re-executing jpeg_stdio_dest.
* This makes it dangerous to use this manager and a different destination
* manager serially with the same JPEG object, because their private object
* sizes may be different. Caveat programmer.
*/
if (cinfo->dest == NULL) { /* first time for this JPEG object? */
cinfo->dest = (struct jpeg_destination_mgr *)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
sizeof(JPEGDestinationManager_t));
}
dest = ( JPEGDestinationManager_t * ) cinfo->dest;
dest->pub.init_destination = init_destination;
dest->pub.empty_output_buffer = empty_output_buffer;
dest->pub.term_destination = term_destination;
dest->pBuffer = pBuffer;
}
//-----------------------------------------------------------------------------
// Purpose: Write three channel RGB data to a JPEG file
//-----------------------------------------------------------------------------
bool ImgUtl_WriteRGBToJPEG( unsigned char *pSrcBuf, unsigned int nSrcWidth, unsigned int nSrcHeight, const char *lpszFilename )
{
CUtlBuffer dstBuf;
JSAMPROW row_pointer[1]; // pointer to JSAMPLE row[s]
int row_stride; // physical row width in image buffer
// stderr handler
struct jpeg_error_mgr jerr;
// compression data structure
struct jpeg_compress_struct cinfo;
row_stride = nSrcWidth * 3; // JSAMPLEs per row in image_buffer
// point at stderr
cinfo.err = jpeg_std_error(&jerr);
// create compressor
jpeg_create_compress(&cinfo);
// Hook CUtlBuffer to compression
jpeg_UtlBuffer_dest(&cinfo, &dstBuf );
// image width and height, in pixels
cinfo.image_width = nSrcWidth;
cinfo.image_height = nSrcHeight;
// RGB is 3 component
cinfo.input_components = 3;
// # of color components per pixel
cinfo.in_color_space = JCS_RGB;
// Apply settings
jpeg_set_defaults(&cinfo);
jpeg_set_quality(&cinfo, 100, TRUE );
// Start compressor
jpeg_start_compress(&cinfo, TRUE);
// Write scanlines
while ( cinfo.next_scanline < cinfo.image_height )
{
row_pointer[ 0 ] = &pSrcBuf[ cinfo.next_scanline * row_stride ];
jpeg_write_scanlines( &cinfo, row_pointer, 1 );
}
// Finalize image
jpeg_finish_compress(&cinfo);
// Cleanup
jpeg_destroy_compress(&cinfo);
return CE_SUCCESS;
}
ConversionErrorType ImgUtl_WriteRGBAAsJPEGToBuffer( const unsigned char *pRGBAData, int nWidth, int nHeight, CUtlBuffer &bufOutData, int nStride )
{
#if !defined( _X360 )
JSAMPROW row_pointer[1]; // pointer to JSAMPLE row[s]
int row_stride; // physical row width in image buffer
// stderr handler
struct jpeg_error_mgr jerr;
// compression data structure
struct jpeg_compress_struct cinfo;
row_stride = nWidth * 4;
// point at stderr
cinfo.err = jpeg_std_error(&jerr);
// create compressor
jpeg_create_compress(&cinfo);
// Hook CUtlBuffer to compression
jpeg_UtlBuffer_dest(&cinfo, &bufOutData );
// image width and height, in pixels
cinfo.image_width = nWidth;
cinfo.image_height = nHeight;
// RGB is 3 component
cinfo.input_components = 3;
// # of color components per pixel
cinfo.in_color_space = JCS_RGB;
// Apply settings
jpeg_set_defaults(&cinfo);
jpeg_set_quality(&cinfo, 100, TRUE );
// Start compressor
jpeg_start_compress(&cinfo, TRUE);
// Write scanlines
unsigned char *pDstRow = (unsigned char *)malloc( sizeof(unsigned char) * nWidth * 4 );
while ( cinfo.next_scanline < cinfo.image_height )
{
const unsigned char *pSrcRow = &(pRGBAData[cinfo.next_scanline * row_stride]);
// convert row from RGBA to RGB
for ( int x = nWidth-1 ; x >= 0 ; --x )
{
pDstRow[x*3+2] = pSrcRow[x*4+2];
pDstRow[x*3+1] = pSrcRow[x*4+1];
pDstRow[x*3] = pSrcRow[x*4];
}
row_pointer[ 0 ] = pDstRow;
jpeg_write_scanlines( &cinfo, row_pointer, 1 );
}
// Finalize image
jpeg_finish_compress(&cinfo);
// Cleanup
jpeg_destroy_compress(&cinfo);
free( pDstRow );
return CE_SUCCESS;
#else
return CE_SOURCE_FILE_FORMAT_NOT_SUPPORTED;
#endif
}
ConversionErrorType ImgUtl_LoadBitmap( const char *pszFilename, Bitmap_t &bitmap )
{
bitmap.Clear();
ConversionErrorType nErrorCode;
int width, height;
unsigned char *buffer = ImgUtl_ReadImageAsRGBA( pszFilename, width, height, nErrorCode );
if ( nErrorCode != CE_SUCCESS )
{
return nErrorCode;
}
// Install the buffer into the bitmap, and transfer ownership
bitmap.SetBuffer( width, height, IMAGE_FORMAT_RGBA8888, buffer, true, width*4 );
return CE_SUCCESS;
}
static ConversionErrorType ImgUtl_LoadJPEGBitmapFromBuffer( CUtlBuffer &fileData, Bitmap_t &bitmap )
{
// @todo implement
return CE_SOURCE_FILE_FORMAT_NOT_SUPPORTED;
}
static ConversionErrorType ImgUtl_SaveJPEGBitmapToBuffer( CUtlBuffer &fileData, const Bitmap_t &bitmap )
{
if ( !bitmap.IsValid() )
{
Assert( bitmap.IsValid() );
return CE_CANT_OPEN_SOURCE_FILE;
}
// Sorry, only RGBA8888 supported right now
if ( bitmap.Format() != IMAGE_FORMAT_RGBA8888 )
{
Assert( bitmap.Format() == IMAGE_FORMAT_RGBA8888 );
return CE_SOURCE_FILE_FORMAT_NOT_SUPPORTED;
}
// Do it
ConversionErrorType result = ImgUtl_WriteRGBAAsJPEGToBuffer(
bitmap.GetBits(),
bitmap.Width(),
bitmap.Height(),
fileData,
bitmap.Stride()
);
return result;
}
ConversionErrorType ImgUtl_LoadBitmapFromBuffer( CUtlBuffer &fileData, Bitmap_t &bitmap, ImageFileFormat eImageFileFormat )
{
switch ( eImageFileFormat )
{
case kImageFileFormat_PNG:
return ImgUtl_LoadPNGBitmapFromBuffer( fileData, bitmap );
case kImageFileFormat_JPG:
return ImgUtl_LoadJPEGBitmapFromBuffer( fileData, bitmap );
}
return CE_SOURCE_FILE_FORMAT_NOT_SUPPORTED;
}
ConversionErrorType ImgUtl_SaveBitmapToBuffer( CUtlBuffer &fileData, const Bitmap_t &bitmap, ImageFileFormat eImageFileFormat )
{
switch ( eImageFileFormat )
{
case kImageFileFormat_PNG:
return ImgUtl_SavePNGBitmapToBuffer( fileData, bitmap );
case kImageFileFormat_JPG:
return ImgUtl_SaveJPEGBitmapToBuffer( fileData, bitmap );
}
return CE_SOURCE_FILE_FORMAT_NOT_SUPPORTED;
}
ConversionErrorType ImgUtl_LoadPNGBitmapFromBuffer( CUtlBuffer &fileData, Bitmap_t &bitmap )
{
bitmap.Clear();
ConversionErrorType nErrorCode;
int width, height;
unsigned char *buffer = ImgUtl_ReadPNGAsRGBAFromBuffer( fileData, width, height, nErrorCode );
if ( nErrorCode != CE_SUCCESS )
{
return nErrorCode;
}
// Install the buffer into the bitmap, and transfer ownership
bitmap.SetBuffer( width, height, IMAGE_FORMAT_RGBA8888, buffer, true, width*4 );
return CE_SUCCESS;
}
ConversionErrorType ImgUtl_SavePNGBitmapToBuffer( CUtlBuffer &fileData, const Bitmap_t &bitmap )
{
if ( !bitmap.IsValid() )
{
Assert( bitmap.IsValid() );
return CE_CANT_OPEN_SOURCE_FILE;
}
// Sorry, only RGBA8888 supported right now
if ( bitmap.Format() != IMAGE_FORMAT_RGBA8888 )
{
Assert( bitmap.Format() == IMAGE_FORMAT_RGBA8888 );
return CE_SOURCE_FILE_FORMAT_NOT_SUPPORTED;
}
// Do it
ConversionErrorType result = ImgUtl_WriteRGBAAsPNGToBuffer(
bitmap.GetBits(),
bitmap.Width(),
bitmap.Height(),
fileData,
bitmap.Stride()
);
return result;
}
ConversionErrorType ImgUtl_ResizeBitmap( Bitmap_t &destBitmap, int nWidth, int nHeight, const Bitmap_t *pImgSource )
{
// Check for resizing in place, then save off data into a temp
Bitmap_t temp;
if ( pImgSource == NULL || pImgSource == &destBitmap )
{
temp.MakeLogicalCopyOf( destBitmap, destBitmap.GetOwnsBuffer() );
pImgSource = &temp;
}
// No source image?
if ( !pImgSource->IsValid() )
{
Assert( pImgSource->IsValid() );
return CE_CANT_OPEN_SOURCE_FILE;
}
// Sorry, we're using an existing rescaling routine that
// only withs for RGBA images with assumed stride
if (
pImgSource->Format() != IMAGE_FORMAT_RGBA8888
|| pImgSource->Stride() != pImgSource->Width()*4
) {
Assert( pImgSource->Format() == IMAGE_FORMAT_RGBA8888 );
Assert( pImgSource->Stride() == pImgSource->Width()*4 );
return CE_SOURCE_FILE_FORMAT_NOT_SUPPORTED;
}
// Allocate buffer
destBitmap.Init( nWidth, nHeight, IMAGE_FORMAT_RGBA8888 );
// Something wrong?
if ( !destBitmap.IsValid() )
{
Assert( destBitmap.IsValid() );
return CE_MEMORY_ERROR;
}
// Do it
return ImgUtl_StretchRGBAImage(
pImgSource->GetBits(), pImgSource->Width(), pImgSource->Height(),
destBitmap.GetBits(), destBitmap.Width(), destBitmap.Height()
);
}