libvpx: Pull from upstream

source/libvpx/examples/vp8_set_maps.c

 /*
  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 183 matching lines @@
             die_codec(&codec, "Failed to initialize encoder");
 
         frame_avail = 1;
         got_data = 0;
         while(frame_avail || got_data) {
             vpx_codec_iter_t iter = NULL;
             const vpx_codec_cx_pkt_t *pkt;
 
             if(frame_cnt + 1 == 22) {
                 vpx_roi_map_t  roi;
-                int            i;
+                unsigned int   i;
 
                 roi.rows = cfg.g_h/16;
                 roi.cols = cfg.g_w/16;
 
                 roi.delta_q[0] = 0;
                 roi.delta_q[1] = -2;
                 roi.delta_q[2] = -4;
                 roi.delta_q[3] = -6;
 
                 roi.delta_lf[0] = 0;
@@ skipping 10 matching lines @@
                 roi.roi_map = malloc(roi.rows * roi.cols);
                 for(i=0;i<roi.rows*roi.cols;i++)
                     roi.roi_map[i] = i & 3;
 
                 if(vpx_codec_control(&codec, VP8E_SET_ROI_MAP, &roi))
                     die_codec(&codec, "Failed to set ROI map");
 
                 free(roi.roi_map);
             } else if(frame_cnt + 1 == 33) {
                 vpx_active_map_t  active;
-                int               i;
+                unsigned int      i;
 
                 active.rows = cfg.g_h/16;
                 active.cols = cfg.g_w/16;
 
                 /* generate active map for example */
                 active.active_map = malloc(active.rows * active.cols);
                 for(i=0;i<active.rows*active.cols;i++)
                     active.active_map[i] = i & 1;
 
                 if(vpx_codec_control(&codec, VP8E_SET_ACTIVEMAP, &active))
@@ skipping 41 matching lines @@
     vpx_img_free(&raw);
     if(vpx_codec_destroy(&codec))
         die_codec(&codec, "Failed to destroy codec");
 
     /* Try to rewrite the file header with the actual frame count */
     if(!fseek(outfile, 0, SEEK_SET))
         write_ivf_file_header(outfile, &cfg, frame_cnt-1);
     fclose(outfile);
     return EXIT_SUCCESS;
 }