/*
- Copyright (C) 1999-2007 id Software, Inc. and contributors.
- For a list of contributors, see the accompanying CONTRIBUTORS file.
+ Copyright (C) 2001-2006, William Joseph.
+ All Rights Reserved.
This file is part of GtkRadiant.
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include <stdio.h>
-#include <string.h>
-#include <glib.h>
#include "bmp.h"
-#include "image.h"
-
-static void BMPLineNone( FILE *f, char *sline, int pixbytes, int width ){
- int nbytes, i, k, j;
-
- switch ( pixbytes )
- {
- case 1:
- nbytes = ( width + 3 ) / 4;
- nbytes *= 4;
-
- fread( sline, width, 1, f );
- nbytes -= width;
-
- while ( nbytes-- > 0 ) fgetc( f );
- return;
-
- case 3:
- nbytes = ( ( width * 3 ) + 3 ) / 4;
- nbytes *= 4;
-
- fread( sline, width, 3, f );
- nbytes -= width * 3;
-
- while ( nbytes-- > 0 ) fgetc( f );
-
- // reorder bgr to rgb
- for ( i = 0, j = 0; i < width; i++, j += 3 )
- {
- k = sline[j];
- sline[j] = sline[j + 2];
- sline[j + 2] = k;
- }
-
- return;
- }
-
- Error( "BMPLineNone failed." );
+#include "ifilesystem.h"
+
+typedef unsigned char byte;
+
+#include "imagelib.h"
+#include "bytestreamutils.h"
+
+
+typedef unsigned char PaletteEntry[4];
+typedef struct
+{
+ char id[2];
+ unsigned long fileSize;
+ unsigned long reserved0;
+ unsigned long bitmapDataOffset;
+ unsigned long bitmapHeaderSize;
+ unsigned long width;
+ unsigned long height;
+ unsigned short planes;
+ unsigned short bitsPerPixel;
+ unsigned long compression;
+ unsigned long bitmapDataSize;
+ unsigned long hRes;
+ unsigned long vRes;
+ unsigned long colors;
+ unsigned long importantColors;
+ PaletteEntry palette[256];
+} BMPHeader_t;
+
+class ReadPixel8
+{
+PaletteEntry* m_palette;
+public:
+ReadPixel8( PaletteEntry* palette ) : m_palette( palette ){
}
-
-
-static void BMPLineRLE8( FILE *f, char *sline, int pixbytes, int width ){
- Error( "RLE8 not yet supported." );
+void operator()( PointerInputStream& inputStream, byte*& pixbuf ) const {
+ byte palIndex;
+ inputStream.read( &palIndex, 1 );
+ *pixbuf++ = m_palette[palIndex][2];
+ *pixbuf++ = m_palette[palIndex][1];
+ *pixbuf++ = m_palette[palIndex][0];
+ *pixbuf++ = 0xff;
}
-
-
-static void BMPLineRLE4( FILE *f, char *sline, int pixbytes, int width ){
- Error( "RLE4 not yet supported." );
+};
+
+class ReadPixel16
+{
+public:
+void operator()( PointerInputStream& inputStream, byte*& pixbuf ) const {
+ unsigned short shortPixel;
+ inputStream.read( reinterpret_cast<byte*>( &shortPixel ), sizeof( unsigned short ) ); //!\todo Is this endian safe?
+ *pixbuf++ = static_cast<byte>( shortPixel & ( 31 << 10 ) ) >> 7;
+ *pixbuf++ = static_cast<byte>( shortPixel & ( 31 << 5 ) ) >> 2;
+ *pixbuf++ = static_cast<byte>( shortPixel & ( 31 ) ) << 3;
+ *pixbuf++ = 0xff;
}
-
-
-static void BMPLine( FILE *f, char *scanline, int pixbytes, int width, int rle ){
- switch ( rle )
- {
- case xBI_NONE: BMPLineNone( f, scanline, pixbytes, width ); return;
- case xBI_RLE8: BMPLineRLE8( f, scanline, pixbytes, width ); return;
- case xBI_RLE4: BMPLineRLE4( f, scanline, pixbytes, width ); return;
- }
-
- Error( "Unknown compression type." );
+};
+
+class ReadPixel24
+{
+public:
+void operator()( PointerInputStream& inputStream, byte*& pixbuf ) const {
+ byte bgr[3];
+ inputStream.read( bgr, 3 );
+ *pixbuf++ = bgr[2];
+ *pixbuf++ = bgr[1];
+ *pixbuf++ = bgr[0];
+ *pixbuf++ = 255;
}
-
-
-/*
- static void PrintHeader(binfo_t *b)
- {
- printf("biSize : %ld\n", b->biSize);
- printf("biWidth : %ld\n", b->biWidth);
- printf("biHeight : %ld\n", b->biHeight);
- printf("biPlanes : %d\n", b->biPlanes);
- printf("biBitCount : %d\n", b->biBitCount);
- printf("biCompression : %ld\n", b->biCompression);
- printf("biSizeImage : %ld\n", b->biSizeImage);
- printf("biXPelsPerMeter: %ld\n", b->biXPelsPerMeter);
- printf("biYPelsPerMeter: %ld\n", b->biYPelsPerMeter);
- printf("biClrUsed : %ld\n", b->biClrUsed);
- printf("biClrImportant : %ld\n", b->biClrImportant);
- }
- */
-
-// FIXME: calls to Error(const char *, ... ) are dependant on qe3.cpp
-void LoadBMP( char *filename, bitmap_t *bit ){
- FILE *f;
- bmphd_t bhd;
- binfo_t info;
- // int pxlsize = 1;
- int rowbytes, i, pixbytes;
- char *scanline;
-
- // open file
- if ( ( f = fopen( filename, "rb" ) ) == NULL ) {
- Error( "Unable to open file" ); // %s.", filename);
- }
-
- // read in bitmap header
- if ( fread( &bhd, sizeof( bhd ), 1, f ) != 1 ) {
- fclose( f );
- Error( "Unable to read in bitmap header." );
- }
-
- // make sure we have a valid bitmap file
- if ( bhd.bfType != BMP_SIGNATURE_WORD ) {
- fclose( f );
- Error( "Invalid BMP file" ); //: %s", filename);
- }
-
- // load in info header
- if ( fread( &info, sizeof( info ), 1, f ) != 1 ) {
- fclose( f );
- Error( "Unable to read bitmap info header." );
- }
-
- // make sure this is an info type of bitmap
- if ( info.biSize != sizeof( binfo_t ) ) {
- fclose( f );
- Error( "We only support the info bitmap type." );
- }
-
- // PrintHeader(&info);
-
- bit->bpp = info.biBitCount;
- bit->width = info.biWidth;
- bit->height = info.biHeight;
- bit->data = NULL;
- bit->palette = NULL;
-
- //currently we only read in 8 and 24 bit bmp files
- if ( info.biBitCount == 8 ) {
- pixbytes = 1;
- }
- else if ( info.biBitCount == 24 ) {
- pixbytes = 3;
- }
- else
- {
- Error( "Only 8BPP and 24BPP supported" );
- //Error("BPP %d not supported.", info.biBitCount);
- }
-
- // if this is an eight bit image load palette
- if ( pixbytes == 1 ) {
- drgb_t q;
-
- bit->palette = reinterpret_cast<rgb_t*>( g_malloc( sizeof( rgb_t ) * 256 ) );
-
- for ( i = 0; i < 256; i++ )
- {
- if ( fread( &q, sizeof( drgb_t ), 1, f ) != 1 ) {
- fclose( f ); g_free( bit->palette );
- Error( "Unable to read palette." );
- }
-
- bit->palette[i].r = q.red;
- bit->palette[i].g = q.green;
- bit->palette[i].b = q.blue;
- }
- }
-
- // position to start of bitmap
- fseek( f, bhd.bfOffBits, SEEK_SET );
-
- // create scanline to read data into
- rowbytes = ( ( info.biWidth * pixbytes ) + 3 ) / 4;
- rowbytes *= 4;
-
- scanline = reinterpret_cast<char*>( g_malloc( rowbytes ) );
-
- // alloc space for new bitmap
- bit->data = reinterpret_cast<unsigned char*>( g_malloc( info.biWidth * pixbytes * info.biHeight ) );
-
- // read in image
- for ( i = 0; i < info.biHeight; i++ )
- {
- BMPLine( f, scanline, pixbytes, info.biWidth, info.biCompression );
-
- // store line
- memcpy( &bit->data[info.biWidth * pixbytes * ( info.biHeight - i - 1 )], scanline, info.biWidth * pixbytes );
- }
-
- g_free( scanline );
- fclose( f );
+};
+
+class ReadPixel32
+{
+public:
+void operator()( PointerInputStream& inputStream, byte*& pixbuf ) const {
+ byte bgra[4];
+ inputStream.read( bgra, 4 );
+ *pixbuf++ = bgra[2];
+ *pixbuf++ = bgra[1];
+ *pixbuf++ = bgra[0];
+ *pixbuf++ = bgra[3];
}
+};
-
-
-static void BMPEncodeLine( FILE *f, unsigned char *data, int npxls, int pixbytes ){
- int nbytes, i, j, k;
-
- switch ( pixbytes )
+template<typename ReadPixel>
+void ReadBMP( PointerInputStream& inputStream, byte* bmpRGBA, int rows, int columns, ReadPixel readPixel ){
+ for ( int row = rows - 1; row >= 0; row-- )
{
- case 1:
- nbytes = ( npxls + 3 ) / 4;
- nbytes *= 4;
-
- fwrite( data, npxls, 1, f );
- nbytes -= npxls;
+ byte* pixbuf = bmpRGBA + row * columns * 4;
- while ( nbytes-- > 0 ) fputc( 0, f );
- return;
-
- case 3:
- // reorder rgb to bgr
- for ( i = 0, j = 0; i < npxls; i++, j += 3 )
+ for ( int column = 0; column < columns; column++ )
{
- k = data[j];
- data[j] = data[j + 2];
- data[j + 2] = k;
+ readPixel( inputStream, pixbuf );
}
-
- nbytes = ( ( npxls * 3 ) + 3 ) / 4;
- nbytes *= 4;
-
- fwrite( data, npxls, 3, f );
- nbytes -= npxls * 3;
-
- while ( nbytes-- > 0 ) fputc( 0, f );
- return;
}
-
- Error( "BMPEncodeLine Failed." );
}
+Image* LoadBMPBuff( PointerInputStream& inputStream, std::size_t length ){
+ BMPHeader_t bmpHeader;
+ inputStream.read( reinterpret_cast<byte*>( bmpHeader.id ), 2 );
+ bmpHeader.fileSize = istream_read_uint32_le( inputStream );
+ bmpHeader.reserved0 = istream_read_uint32_le( inputStream );
+ bmpHeader.bitmapDataOffset = istream_read_uint32_le( inputStream );
+ bmpHeader.bitmapHeaderSize = istream_read_uint32_le( inputStream );
+ bmpHeader.width = istream_read_uint32_le( inputStream );
+ bmpHeader.height = istream_read_uint32_le( inputStream );
+ bmpHeader.planes = istream_read_uint16_le( inputStream );
+ bmpHeader.bitsPerPixel = istream_read_uint16_le( inputStream );
+ bmpHeader.compression = istream_read_uint32_le( inputStream );
+ bmpHeader.bitmapDataSize = istream_read_uint32_le( inputStream );
+ bmpHeader.hRes = istream_read_uint32_le( inputStream );
+ bmpHeader.vRes = istream_read_uint32_le( inputStream );
+ bmpHeader.colors = istream_read_uint32_le( inputStream );
+ bmpHeader.importantColors = istream_read_uint32_le( inputStream );
-
-void WriteBMP( char *filename, bitmap_t *bit ){
- FILE *f;
- bmphd_t header;
- binfo_t info;
- drgb_t q; // palette that gets written
- long bmofs;
- int w, h, i;
- int pixbytes;
-
- if ( bit->bpp == 8 ) {
- pixbytes = 1;
- }
- else if ( bit->bpp == 24 ) {
- pixbytes = 3;
+ if ( bmpHeader.bitsPerPixel == 8 ) {
+ int paletteSize = bmpHeader.colors * 4;
+ inputStream.read( reinterpret_cast<byte*>( bmpHeader.palette ), paletteSize );
}
- else
- {
- Error( "Only 8BPP and 24BPP supported" );
- //Error("BPP %d not supported.", bit->bpp);
+ if ( bmpHeader.id[0] != 'B' && bmpHeader.id[1] != 'M' ) {
+ globalErrorStream() << "LoadBMP: only Windows-style BMP files supported\n";
+ return 0;
}
-
-
- if ( ( f = fopen( filename, "wb" ) ) == NULL ) {
- Error( "Unable to open file" ); //%s.", filename);
+ if ( bmpHeader.fileSize != length ) {
+ globalErrorStream() << "LoadBMP: header size does not match file size (" << Unsigned( bmpHeader.fileSize ) << " vs. " << Unsigned( length ) << ")\n";
+ return 0;
}
-
- // write out an empty header as a place holder
- if ( fwrite( &header, sizeof( header ), 1, f ) != 1 ) {
- Error( "Unable to fwrite." );
+ if ( bmpHeader.compression != 0 ) {
+ globalErrorStream() << "LoadBMP: only uncompressed BMP files supported\n";
+ return 0;
}
-
- // init and write info header
- info.biSize = sizeof( binfo_t );
- info.biWidth = bit->width;
- info.biHeight = bit->height;
- info.biPlanes = 1;
- info.biBitCount = bit->bpp;
- info.biCompression = xBI_NONE;
- info.biSizeImage = bit->width * bit->height;
- info.biXPelsPerMeter = 0;
- info.biYPelsPerMeter = 0;
- info.biClrUsed = 256;
- info.biClrImportant = 256;
-
- if ( fwrite( &info, sizeof( binfo_t ), 1, f ) != 1 ) {
- Error( "fwrite failed." );
+ if ( bmpHeader.bitsPerPixel < 8 ) {
+ globalErrorStream() << "LoadBMP: monochrome and 4-bit BMP files not supported\n";
+ return 0;
}
- // write out palette if we need to
- if ( bit->bpp == 8 ) {
- for ( i = 0; i < 256; i++ )
- {
- q.red = bit->palette[i].r;
- q.green = bit->palette[i].g;
- q.blue = bit->palette[i].b;
-
- fwrite( &q, sizeof( q ), 1, f );
- }
+ int columns = bmpHeader.width;
+ int rows = bmpHeader.height;
+ if ( rows < 0 ) {
+ rows = -rows;
}
- // save offset to start of bitmap
- bmofs = ftell( f );
-
- // output bitmap
- w = bit->width;
- h = bit->height;
+ RGBAImage* image = new RGBAImage( columns, rows );
- for ( i = h - 1; i >= 0; i-- )
+ switch ( bmpHeader.bitsPerPixel )
{
- BMPEncodeLine( f, &bit->data[w * pixbytes * i], w, pixbytes );
- }
-
- // update and rewrite file header
- header.bfType = BMP_SIGNATURE_WORD;
- header.bfSize = ftell( f );
- header.bfOffBits = bmofs;
-
- fseek( f, 0L, SEEK_SET );
- fwrite( &header, sizeof( header ), 1, f );
-
- fclose( f );
+ case 8:
+ ReadBMP( inputStream, image->getRGBAPixels(), rows, columns, ReadPixel8( bmpHeader.palette ) );
+ break;
+ case 16:
+ ReadBMP( inputStream, image->getRGBAPixels(), rows, columns, ReadPixel16() );
+ break;
+ case 24:
+ ReadBMP( inputStream, image->getRGBAPixels(), rows, columns, ReadPixel24() );
+ break;
+ case 32:
+ ReadBMP( inputStream, image->getRGBAPixels(), rows, columns, ReadPixel32() );
+ break;
+ default:
+ globalErrorStream() << "LoadBMP: illegal pixel_size '" << bmpHeader.bitsPerPixel << "'\n";
+ image->release();
+ return 0;
+ }
+ return image;
}
-
-void NewBMP( int width, int height, int bpp, bitmap_t *bit ){
- int pixbytes;
-
- if ( bpp == 8 ) {
- pixbytes = 1;
- }
- else if ( bpp == 24 ) {
- pixbytes = 3;
- }
-
- else
- {
- Error( "NewBMP: 8 or 24 bit only." );
- }
-
- bit->bpp = bpp;
- bit->width = width;
- bit->height = height;
-
- bit->data = reinterpret_cast<unsigned char*>( g_malloc( width * height * pixbytes ) );
-
- if ( bit->data == NULL ) {
- Error( "NewBMP: g_malloc failed." );
- }
-
- // see if we need to create a palette
- if ( pixbytes == 1 ) {
- bit->palette = (rgb_t *) g_malloc( 768 );
-
- if ( bit->palette == NULL ) {
- Error( "NewBMP: unable to g_malloc palette." );
- }
- }
- else
- {
- bit->palette = NULL;
- }
-}
-
-
-
-void FreeBMP( bitmap_t *bitmap ){
- if ( bitmap->palette ) {
- g_free( bitmap->palette );
- bitmap->palette = NULL;
- }
-
- if ( bitmap->data ) {
- g_free( bitmap->data );
- bitmap->data = NULL;
- }
+Image* LoadBMP( ArchiveFile& file ){
+ ScopedArchiveBuffer buffer( file );
+ PointerInputStream inputStream( buffer.buffer );
+ return LoadBMPBuff( inputStream, buffer.length );
}
projects / xonotic / netradiant.git / blobdiff