// Reverses the order of the rows in the image
void LLImageRaw::verticalFlip()
{
S32 row_bytes = getWidth() * getComponents();
llassert(row_bytes > 0);
std::vector<U8> line_buffer(row_bytes);
S32 mid_row = getHeight() / 2;
for( S32 row = 0; row < mid_row; row++ )
{
U8* row_a_data = getData() + row * row_bytes;
U8* row_b_data = getData() + (getHeight() - 1 - row) * row_bytes;
memcpy( &line_buffer[0], row_a_data, row_bytes );
memcpy( row_a_data, row_b_data, row_bytes );
memcpy( row_b_data, &line_buffer[0], row_bytes );
}
}
void linebuf_test ( void ) {
struct line_buffer linebuf;
const char *data = data1;
size_t len = ( sizeof ( data1 ) - 1 /* be mean; strip the NUL */ );
ssize_t frag_len;
char *line;
memset ( &linebuf, 0, sizeof ( linebuf ) );
while ( len ) {
frag_len = line_buffer ( &linebuf, data, len );
if ( frag_len < 0 ) {
printf ( "line_buffer() failed: %s\n",
strerror ( frag_len ) );
return;
}
data += frag_len;
len -= frag_len;
if ( ( line = buffered_line ( &linebuf ) ) )
printf ( "\"%s\"\n", line );
}
empty_line_buffer ( &linebuf );
}
