libwebp-0.5.2-rc2

third_party/libwebp/dsp/rescaler.c

 // Copyright 2014 Google Inc. All Rights Reserved.
 //
 // Use of this source code is governed by a BSD-style license
 // that can be found in the COPYING 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.
 // -----------------------------------------------------------------------------
 //
 // Rescaling functions
@@ skipping 155 matching lines @@
   }
 }
 
 void WebPRescalerExportRow(WebPRescaler* const wrk) {
   if (wrk->y_accum <= 0) {
     assert(!WebPRescalerOutputDone(wrk));
     if (wrk->y_expand) {
       WebPRescalerExportRowExpand(wrk);
     } else if (wrk->fxy_scale) {
       WebPRescalerExportRowShrink(wrk);
-    } else {  // very special case for src = dst = 1x1
+    } else {  // special case
       int i;
+      assert(wrk->src_height == wrk->dst_height && wrk->x_add == 1);
       assert(wrk->src_width == 1 && wrk->dst_width <= 2);
-      assert(wrk->src_height == 1 && wrk->dst_height == 1);
       for (i = 0; i < wrk->num_channels * wrk->dst_width; ++i) {
         wrk->dst[i] = wrk->irow[i];
         wrk->irow[i] = 0;
       }
     }
     wrk->y_accum += wrk->y_add;
     wrk->dst += wrk->dst_stride;
     ++wrk->dst_y;
   }
 }
@@ skipping 39 matching lines @@
     }
 #endif
 #if defined(WEBP_USE_MIPS_DSP_R2)
     if (VP8GetCPUInfo(kMIPSdspR2)) {
       WebPRescalerDspInitMIPSdspR2();
     }
 #endif
   }
   rescaler_last_cpuinfo_used = VP8GetCPUInfo;
 }