mirror of
https://github.com/nillerusr/source-engine.git
synced 2024-12-22 14:16:50 +00:00
353 lines
8.6 KiB
C++
353 lines
8.6 KiB
C++
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//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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//===========================================================================//
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#include <stdlib.h>
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#include <stdio.h>
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#include "tier0/dbg.h"
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#include "filesystem.h"
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#include "bitmap/tgawriter.h"
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#include "tier1/utlbuffer.h"
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#include "bitmap/imageformat.h"
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#include "tier2/tier2.h"
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#include "tier2/fileutils.h"
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// memdbgon must be the last include file in a .cpp file!!!
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#include "tier0/memdbgon.h"
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namespace TGAWriter
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{
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#pragma pack(1)
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struct TGAHeader_t
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{
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unsigned char id_length;
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unsigned char colormap_type;
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unsigned char image_type;
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unsigned short colormap_index;
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unsigned short colormap_length;
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unsigned char colormap_size;
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unsigned short x_origin;
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unsigned short y_origin;
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unsigned short width;
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unsigned short height;
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unsigned char pixel_size;
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unsigned char attributes;
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};
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#pragma pack()
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#define fputc myfputc
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#define fwrite myfwrite
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static void fputLittleShort( unsigned short s, CUtlBuffer &buffer )
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{
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buffer.PutChar( s & 0xff );
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buffer.PutChar( s >> 8 );
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}
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static inline void myfputc( unsigned char c, FileHandle_t fileHandle )
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{
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g_pFullFileSystem->Write( &c, 1, fileHandle );
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}
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static inline void myfwrite( void const *data, int size1, int size2, FileHandle_t fileHandle )
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{
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g_pFullFileSystem->Write( data, size1 * size2, fileHandle );
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}
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//-----------------------------------------------------------------------------
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// FIXME: assumes that we don't need to do gamma correction.
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//-----------------------------------------------------------------------------
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bool WriteToBuffer( unsigned char *pImageData, CUtlBuffer &buffer, int width, int height,
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ImageFormat srcFormat, ImageFormat dstFormat )
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{
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TGAHeader_t header;
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// Fix the dstFormat to match what actually is going to go into the file
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switch( dstFormat )
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{
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case IMAGE_FORMAT_RGB888:
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dstFormat = IMAGE_FORMAT_BGR888;
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break;
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#if defined( _X360 )
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case IMAGE_FORMAT_LINEAR_RGB888:
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dstFormat = IMAGE_FORMAT_LINEAR_BGR888;
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break;
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#endif
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case IMAGE_FORMAT_RGBA8888:
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dstFormat = IMAGE_FORMAT_BGRA8888;
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break;
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}
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header.id_length = 0; // comment length
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header.colormap_type = 0; // ???
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switch( dstFormat )
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{
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case IMAGE_FORMAT_BGR888:
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#if defined( _X360 )
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case IMAGE_FORMAT_LINEAR_BGR888:
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#endif
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header.image_type = 2; // 24/32 bit uncompressed TGA
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header.pixel_size = 24;
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break;
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case IMAGE_FORMAT_BGRA8888:
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header.image_type = 2; // 24/32 bit uncompressed TGA
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header.pixel_size = 32;
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break;
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case IMAGE_FORMAT_I8:
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header.image_type = 1; // 8 bit uncompressed TGA
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header.pixel_size = 8;
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break;
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default:
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return false;
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break;
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}
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header.colormap_index = 0;
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header.colormap_length = 0;
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header.colormap_size = 0;
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header.x_origin = 0;
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header.y_origin = 0;
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header.width = ( unsigned short )width;
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header.height = ( unsigned short )height;
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header.attributes = 0x20; // Makes it so we don't have to vertically flip the image
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buffer.PutChar( header.id_length );
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buffer.PutChar( header.colormap_type );
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buffer.PutChar( header.image_type );
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fputLittleShort( header.colormap_index, buffer );
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fputLittleShort( header.colormap_length, buffer );
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buffer.PutChar( header.colormap_size );
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fputLittleShort( header.x_origin, buffer );
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fputLittleShort( header.y_origin, buffer );
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fputLittleShort( header.width, buffer );
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fputLittleShort( header.height, buffer );
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buffer.PutChar( header.pixel_size );
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buffer.PutChar( header.attributes );
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int nSizeInBytes = width * height * ImageLoader::SizeInBytes( dstFormat );
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buffer.EnsureCapacity( buffer.TellPut() + nSizeInBytes );
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unsigned char *pDst = (unsigned char*)buffer.PeekPut();
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if ( !ImageLoader::ConvertImageFormat( pImageData, srcFormat, pDst, dstFormat, width, height ) )
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return false;
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buffer.SeekPut( CUtlBuffer::SEEK_CURRENT, nSizeInBytes );
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return true;
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}
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bool WriteDummyFileNoAlloc( const char *fileName, int width, int height, enum ImageFormat dstFormat )
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{
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TGAHeader_t tgaHeader;
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Assert( g_pFullFileSystem );
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if( !g_pFullFileSystem )
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{
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return false;
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}
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COutputFile fp( fileName );
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int nBytesPerPixel, nImageType, nPixelSize;
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switch( dstFormat )
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{
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case IMAGE_FORMAT_BGR888:
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#if defined( _X360 )
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case IMAGE_FORMAT_LINEAR_BGR888:
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#endif
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nBytesPerPixel = 3; // 24/32 bit uncompressed TGA
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nPixelSize = 24;
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nImageType = 2;
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break;
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case IMAGE_FORMAT_BGRA8888:
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nBytesPerPixel = 4; // 24/32 bit uncompressed TGA
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nPixelSize = 32;
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nImageType = 2;
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break;
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case IMAGE_FORMAT_I8:
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nBytesPerPixel = 1; // 8 bit uncompressed TGA
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nPixelSize = 8;
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nImageType = 1;
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break;
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default:
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return false;
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break;
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}
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memset( &tgaHeader, 0, sizeof(tgaHeader) );
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tgaHeader.id_length = 0;
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tgaHeader.image_type = (unsigned char) nImageType;
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tgaHeader.width = (unsigned short) width;
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tgaHeader.height = (unsigned short) height;
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tgaHeader.pixel_size = (unsigned char) nPixelSize;
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tgaHeader.attributes = 0x20;
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// Write the Targa header
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fp.Write( &tgaHeader, sizeof(TGAHeader_t) );
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// Write out width * height black pixels
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unsigned char black[4] = { 0x1E, 0x9A, 0xFF, 0x00 };
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for (int i = 0; i < width * height; i++)
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{
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fp.Write( black, nBytesPerPixel );
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}
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return true;
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}
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bool WriteTGAFile( const char *fileName, int width, int height, enum ImageFormat srcFormat, uint8 const *srcData, int nStride )
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{
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TGAHeader_t tgaHeader;
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COutputFile fp( fileName );
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int nBytesPerPixel, nImageType, nPixelSize;
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bool bMustConvert = false;
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ImageFormat dstFormat = srcFormat;
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switch( srcFormat )
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{
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case IMAGE_FORMAT_BGR888:
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#if defined( _X360 )
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case IMAGE_FORMAT_LINEAR_BGR888:
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#endif
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nBytesPerPixel = 3; // 24/32 bit uncompressed TGA
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nPixelSize = 24;
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nImageType = 2;
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break;
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case IMAGE_FORMAT_BGRA8888:
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nBytesPerPixel = 4; // 24/32 bit uncompressed TGA
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nPixelSize = 32;
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nImageType = 2;
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break;
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case IMAGE_FORMAT_RGBA8888:
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bMustConvert = true;
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dstFormat = IMAGE_FORMAT_BGRA8888;
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nBytesPerPixel = 4; // 24/32 bit uncompressed TGA
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nPixelSize = 32;
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nImageType = 2;
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break;
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case IMAGE_FORMAT_I8:
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nBytesPerPixel = 1; // 8 bit uncompressed TGA
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nPixelSize = 8;
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nImageType = 1;
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break;
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default:
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return false;
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break;
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}
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memset( &tgaHeader, 0, sizeof(tgaHeader) );
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tgaHeader.id_length = 0;
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tgaHeader.image_type = (unsigned char) nImageType;
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tgaHeader.width = (unsigned short) width;
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tgaHeader.height = (unsigned short) height;
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tgaHeader.pixel_size = (unsigned char) nPixelSize;
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tgaHeader.attributes = 0x20;
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// Write the Targa header
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fp.Write( &tgaHeader, sizeof(TGAHeader_t) );
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// Write out image data
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if ( bMustConvert )
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{
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uint8 *pLineBuf = new uint8[ nBytesPerPixel * width ];
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while( height-- )
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{
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ImageLoader::ConvertImageFormat( srcData, srcFormat, pLineBuf, dstFormat, width, 1 );
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fp.Write( pLineBuf, nBytesPerPixel * width );
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srcData += nStride;
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}
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delete[] pLineBuf;
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}
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else
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{
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while( height-- )
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{
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fp.Write( srcData, nBytesPerPixel * width );
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srcData += nStride;
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}
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}
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return true;
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}
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bool WriteRectNoAlloc( unsigned char *pImageData, const char *fileName, int nXOrigin, int nYOrigin, int width, int height, int nStride, enum ImageFormat srcFormat )
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{
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Assert( g_pFullFileSystem );
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if( !g_pFullFileSystem )
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{
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return false;
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}
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FileHandle_t fp;
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fp = g_pFullFileSystem->Open( fileName, "r+b" );
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//
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// Read in the targa header
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//
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TGAHeader_t tgaHeader;
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g_pFullFileSystem->Read( &tgaHeader, sizeof(tgaHeader), fp );
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int nBytesPerPixel, nPixelSize;
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switch( srcFormat )
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{
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case IMAGE_FORMAT_BGR888:
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#if defined( _X360 )
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case IMAGE_FORMAT_LINEAR_BGR888:
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#endif
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nBytesPerPixel = 3; // 24/32 bit uncompressed TGA
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nPixelSize = 24;
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break;
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case IMAGE_FORMAT_BGRA8888:
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nBytesPerPixel = 4; // 24/32 bit uncompressed TGA
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nPixelSize = 32;
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break;
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case IMAGE_FORMAT_I8:
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nBytesPerPixel = 1; // 8 bit uncompressed TGA
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nPixelSize = 8;
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break;
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default:
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return false;
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break;
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}
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// Verify src data matches the targa we're going to write into
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if ( nPixelSize != tgaHeader.pixel_size )
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{
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Warning( "TGA doesn't match source data.\n" );
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return false;
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}
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// Seek to the origin of the target subrect from the beginning of the file
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g_pFullFileSystem->Seek( fp, nBytesPerPixel * (tgaHeader.width * nYOrigin + nXOrigin), FILESYSTEM_SEEK_CURRENT );
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unsigned char *pSrc = pImageData;
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// Run through each scanline of the incoming rect
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for (int row=0; row < height; row++ )
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{
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g_pFullFileSystem->Write( pSrc, nBytesPerPixel * width, fp );
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// Advance src pointer to next scanline
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pSrc += nBytesPerPixel * nStride;
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// Seek ahead in the file
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g_pFullFileSystem->Seek( fp, nBytesPerPixel * ( tgaHeader.width - width ), FILESYSTEM_SEEK_CURRENT );
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}
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g_pFullFileSystem->Close( fp );
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return true;
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}
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} // end namespace TGAWriter
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