Description:

source/libvpx/vp8/encoder/firstpass.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 840 matching lines @@
                sizeof(FIRSTPASS_STATS));
         output_stats(cpi, cpi->output_pkt_list, &cpi->twopass.this_frame_stats);
         accumulate_stats(&cpi->twopass.total_stats, &fps);
     }
 
     /* Copy the previous Last Frame into the GF buffer if specific
      * conditions for doing so are met
      */
     if ((cm->current_video_frame > 0) &&
         (cpi->twopass.this_frame_stats.pcnt_inter > 0.20) &&
-        ((cpi->twopass.this_frame_stats.intra_error / cpi->twopass.this_frame_stats.coded_error) > 2.0))
+        ((cpi->twopass.this_frame_stats.intra_error /
+          DOUBLE_DIVIDE_CHECK(cpi->twopass.this_frame_stats.coded_error)) >
+         2.0))
     {
         vp8_yv12_copy_frame(lst_yv12, gld_yv12);
     }
 
     /* swap frame pointers so last frame refers to the frame we just
      * compressed
      */
     vp8_swap_yv12_buffer(lst_yv12, new_yv12);
     vp8_yv12_extend_frame_borders(lst_yv12);
 
@@ skipping 1237 matching lines @@
     {
         cpi->twopass.kf_group_bits =
             (cpi->twopass.bits_left > 0) ? cpi->twopass.bits_left : 0;
     }
 
     /* Calculate the bits to be allocated to the group as a whole */
     if ((cpi->twopass.kf_group_bits > 0) &&
         (cpi->twopass.kf_group_error_left > 0))
     {
         cpi->twopass.gf_group_bits =
-            (int)((double)cpi->twopass.kf_group_bits *
-                  (gf_group_err / (double)cpi->twopass.kf_group_error_left));
+            (int64_t)(cpi->twopass.kf_group_bits *
+                      (gf_group_err / cpi->twopass.kf_group_error_left));
     }
     else
         cpi->twopass.gf_group_bits = 0;
 
-    cpi->twopass.gf_group_bits = (int)(
+    cpi->twopass.gf_group_bits =
         (cpi->twopass.gf_group_bits < 0)
             ? 0
             : (cpi->twopass.gf_group_bits > cpi->twopass.kf_group_bits)
-                ? cpi->twopass.kf_group_bits : cpi->twopass.gf_group_bits);
+                ? cpi->twopass.kf_group_bits : cpi->twopass.gf_group_bits;
 
     /* Clip cpi->twopass.gf_group_bits based on user supplied data rate
      * variability limit (cpi->oxcf.two_pass_vbrmax_section)
      */
-    if (cpi->twopass.gf_group_bits > max_bits * cpi->baseline_gf_interval)
-        cpi->twopass.gf_group_bits = max_bits * cpi->baseline_gf_interval;
+    if (cpi->twopass.gf_group_bits >
+        (int64_t)max_bits * cpi->baseline_gf_interval)
+        cpi->twopass.gf_group_bits =
+            (int64_t)max_bits * cpi->baseline_gf_interval;
 
     /* Reset the file position */
     reset_fpf_position(cpi, start_pos);
 
     /* Update the record of error used so far (only done once per gf group) */
     cpi->twopass.modified_error_used += gf_group_err;
 
     /* Assign  bits to the arf or gf. */
     for (i = 0; i <= (cpi->source_alt_ref_pending && cpi->common.frame_type != KEY_FRAME); i++) {
         int Boost;
@@ skipping 293 matching lines @@
 
         /* Special case: Error error_resilient_mode mode does not make much
          * sense for two pass but with its current meaning but this code is
          * designed to stop outlandish behaviour if someone does set it when
          * using two pass. It effectively disables GF groups. This is
          * temporary code till we decide what should really happen in this
          * case.
          */
         if (cpi->oxcf.error_resilient_mode)
         {
-            cpi->twopass.gf_group_bits = (int)cpi->twopass.kf_group_bits;
+            cpi->twopass.gf_group_bits = cpi->twopass.kf_group_bits;
             cpi->twopass.gf_group_error_left =
                                   (int)cpi->twopass.kf_group_error_left;
             cpi->baseline_gf_interval = cpi->twopass.frames_to_key;
             cpi->frames_till_gf_update_due = cpi->baseline_gf_interval;
             cpi->source_alt_ref_pending = 0;
         }
 
     }
 
     /* Is this a GF / ARF (Note that a KF is always also a GF) */
@@ skipping 892 matching lines @@
         }
 
         if ((cpi->common.Width != new_width) || (cpi->common.Height != new_height))
         {
             cpi->common.Width = new_width;
             cpi->common.Height = new_height;
             vp8_alloc_compressor_data(cpi);
         }
     }
 }