/libswscale/swscale_altivec_template.c - Diff - PeerStreamer - Redmine

Revision 8a322796 libswscale/swscale_altivec_template.c

             src_v = vec_mergeh(src_v, (vector signed short)vzero);
             filter_v = vec_ld(i << 3, filter);
             // the 3 above is 2 (filterSize == 4) + 1 (sizeof(short) == 2)
             // The 3 above is 2 (filterSize == 4) + 1 (sizeof(short) == 2).
             // the neat trick : we only care for half the elements,
             // The neat trick: We only care for half the elements,
             // high or low depending on (i<<3)%16 (it's 0 or 8 here),
             // and we're going to use vec_mule, so we chose
             // carefully how to "unpack" the elements into the even slots
             // and we're going to use vec_mule, so we choose
             // carefully how to "unpack" the elements into the even slots.
             if ((i << 3) % 16)
                 filter_v = vec_mergel(filter_v, (vector signed short)vzero);
             else
-...
             return srcSliceH;
+        }
         /* this code assume:
         /* This code assumes:
 ) dst is 16 bytes-aligned
 ) dstStride is a multiple of 16
 ) width is a multiple of 16
 ) lum&chrom stride are multiple of 8
 ) lum & chrom stride are multiples of 8
         */
         for (y=0; y<height; y++) {
-...
             return srcSliceH;
+        }
         /* this code assume:
         /* This code assumes:
 ) dst is 16 bytes-aligned
 ) dstStride is a multiple of 16
 ) width is a multiple of 16
 ) lum&chrom stride are multiple of 8
 ) lum & chrom stride are multiples of 8
         */
         for (y=0; y<height; y++) {

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