* RLE encoder
* Copyright (c) 2007 Bobby Bingham
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
*/
#include "avcodec.h"
#include "rle.h"
+#include "libavutil/common.h"
/**
* Count up to 127 consecutive pixels which are either all the same or
const uint8_t *pos;
int count = 1;
- for(pos = start + bpp; count < FFMIN(128, len); pos += bpp, count ++) {
+ for(pos = start + bpp; count < FFMIN(127, len); pos += bpp, count ++) {
if(same != !memcmp(pos-bpp, pos, bpp)) {
if(!same) {
/* if bpp == 1, then 0 1 1 0 is more efficiently encoded as a single
* raw block of pixels. for larger bpp, RLE is as good or better */
- if(bpp == 1 && count + 1 < FFMIN(128, len) && *pos != *(pos+1))
+ if(bpp == 1 && count + 1 < FFMIN(127, len) && *pos != *(pos+1))
continue;
/* if RLE can encode the next block better than as a raw block,
} else {
/* fall back on uncompressed */
count = count_pixels(ptr, w-x, bpp, 0);
+ if(out + bpp*count >= outbuf + out_size) return -1;
*out++ = (count ^ xor_raw) + add_raw;
- if(out + bpp*count > outbuf + out_size) return -1;
memcpy(out, ptr, bpp * count);
out += bpp * count;
}