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pluginlib_bmp: fix bug that bitmap isn't saved correctly if width is not a multiple of 4. optimize a bit.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22346 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Teruaki Kawashima 2009-08-16 14:57:15 +00:00
parent 6c5714a6ee
commit fab528e574
1 changed files with 5 additions and 5 deletions
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10
apps/plugins/lib/pluginlib_bmp.c
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@ -35,8 +35,8 @@
*/ */
int save_bmp_file( char* filename, struct bitmap *bm ) int save_bmp_file( char* filename, struct bitmap *bm )
{ {
/* I'm not really sure about this one :) */ int line_width = (bm->width*3+3) & ~3;
int line_width = bm->width*3+((bm->width*3)%4?4-((bm->width*3)%4):0); int padsize = line_width - bm->width*3;
const unsigned char header[] = const unsigned char header[] =
{ {
@ -77,10 +77,10 @@ int save_bmp_file( char* filename, struct bitmap *bm )
}; };
rb->write( fh, c, 3 ); rb->write( fh, c, 3 );
} }
for( x = 0; x < 3*bm->width - line_width; x++ ) if(padsize != 0)
{ {
unsigned char c = 0; unsigned int c = 0; /* padsize is at most 3. */
rb->write( fh, &c, 1 ); rb->write( fh, &c, padsize );
} }
} }
rb->close( fh ); rb->close( fh );