67eb154146
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12179 a1c6a512-1295-4272-9138-f99709370657
84 lines
2.9 KiB
C
84 lines
2.9 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2006 by Antoine Cellerier <dionoea -at- videolan -dot- org>
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "bmp.h"
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#include "lcd.h"
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#include "file.h"
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#include "lcd.h"
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#include "system.h"
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#define LE16(x) (htole16(x))&0xff, ((htole16(x))>>8)&0xff
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#define LE32(x) (htole32(x))&0xff, ((htole32(x))>>8)&0xff, ((htole32(x))>>16)&0xff, ((htole32(x))>>24)&0xff
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/**
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* Save to 24 bit bitmap.
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*/
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int save_bmp_file( char* filename, struct bitmap *bm, struct plugin_api* rb )
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{
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/* I'm not really sure about this one :) */
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int line_width = bm->width*3+((bm->width*3)%4?4-((bm->width*3)%4):0);
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const unsigned char header[] =
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{
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0x42, 0x4d, /* signature - 'BM' */
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LE32( bm->height*line_width + 54 + 4*0 ), /* file size in bytes */
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0x00, 0x00, 0x00, 0x00, /* 0, 0 */
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LE32( 54 + 4*0 ), /* offset to bitmap */
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0x28, 0x00, 0x00, 0x00, /* size of this struct (40) */
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LE32( bm->width ), /* bmap width in pixels */
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LE32( bm->height ), /* bmap height in pixels */
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0x01, 0x00, /* num planes - always 1 */
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LE16( 24 ), /* bits per pixel */
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LE32( 0 ), /* compression flag */
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LE32( bm->height*line_width ), /* image size in bytes */
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0xc4, 0x0e, 0x00, 0x00, /* horz resolution */
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0xc4, 0x0e, 0x00, 0x00, /* vert resolution */
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LE32( 0 ), /* 0 -> color table size */
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LE32( 0 ) /* important color count */
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};
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int fh;
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int x,y;
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if( bm->format != FORMAT_NATIVE ) return -1;
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fh = rb->creat( filename );
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if( fh < 0 ) return -1;
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rb->write( fh, header, sizeof( header ) );
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for( y = bm->height-1; y >= 0; y-- )
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{
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for( x = 0; x < bm->width; x++ )
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{
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fb_data *d = (fb_data*)( bm->data ) + (x+y*bm->width);
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unsigned char c[] =
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{
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RGB_UNPACK_BLUE( *d ),
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RGB_UNPACK_GREEN( *d ),
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RGB_UNPACK_RED( *d )
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};
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rb->write( fh, c, 3 );
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}
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for( x = 0; x < 3*bm->width - line_width; x++ )
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{
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unsigned char c = 0;
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rb->write( fh, &c, 1 );
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}
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}
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rb->close( fh );
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return 1;
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}
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