Merge commit '69c25c92'

* commit '69c25c92':
  dnxhdenc: fix invalid reads in dnxhd_mb_var_thread().
  x86: h264qpel: Move stray comment to the right spot and clarify it
  atrac3: use correct loop variable in add_tonal_components()

Conflicts:
	tests/ref/vsynth/vsynth1-dnxhd-1080i
	tests/ref/vsynth/vsynth2-dnxhd-1080i
Merged-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/dnxhdenc.c

@@ -629,14 +629,35 @@ static void dnxhd_setup_threads_slices(DNXHDEncContext *ctx)
 static int dnxhd_mb_var_thread(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
 {
     DNXHDEncContext *ctx = avctx->priv_data;
-    int mb_y = jobnr, mb_x;
+    int mb_y = jobnr, mb_x, x, y;
+    int partial_last_row = (mb_y == ctx->m.mb_height - 1) &&
+                           ((avctx->height >> ctx->interlaced) & 0xF);
+
     ctx = ctx->thread[threadnr];
     if (ctx->cid_table->bit_depth == 8) {
         uint8_t *pix = ctx->thread[0]->src[0] + ((mb_y<<4) * ctx->m.linesize);
         for (mb_x = 0; mb_x < ctx->m.mb_width; ++mb_x, pix += 16) {
             unsigned mb  = mb_y * ctx->m.mb_width + mb_x;
-            int sum = ctx->m.dsp.pix_sum(pix, ctx->m.linesize);
-            int varc = (ctx->m.dsp.pix_norm1(pix, ctx->m.linesize) - (((unsigned)sum*sum)>>8)+128)>>8;
+            int sum;
+            int varc;
+
+            if (!partial_last_row && mb_x * 16 <= avctx->width - 16) {
+                sum  = ctx->m.dsp.pix_sum(pix, ctx->m.linesize);
+                varc = ctx->m.dsp.pix_norm1(pix, ctx->m.linesize);
+            } else {
+                int bw = FFMIN(avctx->width - 16 * mb_x, 16);
+                int bh = FFMIN((avctx->height >> ctx->interlaced) - 16 * mb_y, 16);
+                sum = varc = 0;
+                for (y = 0; y < bh; y++) {
+                    for (x = 0; x < bw; x++) {
+                        uint8_t val = pix[x + y * ctx->m.linesize];
+                        sum  += val;
+                        varc += val * val;
+                    }
+                }
+            }
+            varc = (varc - (((unsigned)sum * sum) >> 8) + 128) >> 8;
+
             ctx->mb_cmp[mb].value = varc;
             ctx->mb_cmp[mb].mb = mb;
         }

libavcodec/x86/dsputil_mmx.c

@@ -2309,8 +2309,6 @@ static void dsputil_init_avx(DSPContext *c, AVCodecContext *avctx, int mm_flags)
     const int bit_depth = avctx->bits_per_raw_sample;
 
     if (bit_depth == 10) {
-        // AVX implies !cache64.
-        // TODO: Port cache(32|64) detection from x264.
         if (CONFIG_H264CHROMA) {
             c->put_h264_chroma_pixels_tab[0] = ff_put_h264_chroma_mc8_10_avx;
             c->avg_h264_chroma_pixels_tab[0] = ff_avg_h264_chroma_mc8_10_avx;

libavcodec/x86/h264_qpel.c

@@ -611,6 +611,10 @@ void ff_h264qpel_init_x86(H264QpelContext *c, int bit_depth)
     }
 
     if (EXTERNAL_AVX(mm_flags)) {
+        /* AVX implies 64 byte cache lines without the need to avoid unaligned
+         * memory accesses that cross the boundary between two cache lines.
+         * TODO: Port X264_CPU_CACHELINE_32/64 detection from x264 to avoid
+         * having to treat SSE2 functions with such properties as AVX. */
         if (bit_depth == 10) {
             H264_QPEL_FUNCS_10(1, 0, sse2);
             H264_QPEL_FUNCS_10(2, 0, sse2);

tests/ref/vsynth/vsynth1-dnxhd-1080i

-9a4781b0a052d9efaafbaf8893db9632 *tests/data/fate/vsynth1-dnxhd-1080i.mov
+124c991ee3ac0caef39a58a45287a762 *tests/data/fate/vsynth1-dnxhd-1080i.mov
 3031911 tests/data/fate/vsynth1-dnxhd-1080i.mov
-e55bf857297ba4d911a9d17a984b125d *tests/data/fate/vsynth1-dnxhd-1080i.out.rawvideo
+a09132c6db44f415e831dcaa630a351b *tests/data/fate/vsynth1-dnxhd-1080i.out.rawvideo
 stddev:    6.29 PSNR: 32.15 MAXDIFF:   64 bytes:  7603200/   760320

tests/ref/vsynth/vsynth2-dnxhd-1080i

-93b878dcf8f2ecc9798d0e0885c9eec9 *tests/data/fate/vsynth2-dnxhd-1080i.mov
+5d7ab75ce6e547ed63a7a0eacf18f078 *tests/data/fate/vsynth2-dnxhd-1080i.mov
 3031911 tests/data/fate/vsynth2-dnxhd-1080i.mov
-27edc8dfe2ca19097c7f9119705b3a60 *tests/data/fate/vsynth2-dnxhd-1080i.out.rawvideo
+744ba46da5d4c19a28562ea31061d170 *tests/data/fate/vsynth2-dnxhd-1080i.out.rawvideo
 stddev:    1.31 PSNR: 45.77 MAXDIFF:   23 bytes:  7603200/   760320