dv: more precise weight table for 8x8

It is derived from the actual equations of the specs. In
particular, it is closer to the inverse of what the encoder uses.

fate tests accordingly updated.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/dvdata.c

@@ -70,14 +70,14 @@ const uint8_t ff_dv_quant_shifts[22][4] = {
 const uint8_t ff_dv_quant_offset[4] = { 6, 3, 0, 1 };
 
 const uint16_t ff_dv_iweight_88[64] = {
-    32768, 16710, 16710, 17735, 17015, 17735, 18197, 18079,
-    18079, 18197, 18725, 18559, 19196, 18559, 18725, 19284,
-    19108, 19692, 19692, 19108, 19284, 21400, 19645, 20262,
-    20214, 20262, 19645, 21400, 22733, 21845, 20867, 20815,
-    20815, 20867, 21845, 22733, 23173, 23173, 21400, 21400,
-    21400, 23173, 23173, 24600, 23764, 22017, 22017, 23764,
-    24600, 25267, 24457, 22672, 24457, 25267, 25971, 25191,
-    25191, 25971, 26715, 27962, 26715, 29642, 29642, 31536,
+    32768, 16705, 16705, 17734, 17032, 17734, 18205, 18081,
+    18081, 18205, 18725, 18562, 19195, 18562, 18725, 19266,
+    19091, 19705, 19705, 19091, 19266, 21407, 19643, 20267,
+    20228, 20267, 19643, 21407, 22725, 21826, 20853, 20806,
+    20806, 20853, 21826, 22725, 23170, 23170, 21407, 21400,
+    21407, 23170, 23170, 24598, 23786, 22018, 22018, 23786,
+    24598, 25251, 24465, 22654, 24465, 25251, 25972, 25172,
+    25172, 25972, 26722, 27969, 26722, 29692, 29692, 31521,
 };
 const uint16_t ff_dv_iweight_248[64] = {
     32768, 17735, 16710, 18079, 18725, 21400, 17735, 19196,

tests/ref/lavf/dv_fmt

@@ -1,9 +1,9 @@
 11be3e5caa2892236b3475c3f7807b76 *./tests/data/lavf/lavf.dv
 3600000 ./tests/data/lavf/lavf.dv
-./tests/data/lavf/lavf.dv CRC=0x25bdd732
+./tests/data/lavf/lavf.dv CRC=0x0b2cd3ec
 e9949bc767924e1e7d28856029fee024 *./tests/data/lavf/lavf.dv
 3480000 ./tests/data/lavf/lavf.dv
-./tests/data/lavf/lavf.dv CRC=0xc4f27ca7
+./tests/data/lavf/lavf.dv CRC=0xfab17c4a
 87d3b20f656235671383a7eaa2f66330 *./tests/data/lavf/lavf.dv
 3600000 ./tests/data/lavf/lavf.dv
-./tests/data/lavf/lavf.dv CRC=0x0e868a82
+./tests/data/lavf/lavf.dv CRC=0xf3e6873c

tests/ref/vsynth/vsynth1-dv

@@ -1,4 +1,4 @@
 4d572f758b55a1756adf9f54132f3b9e *tests/data/fate/vsynth1-dv.dv
 7200000 tests/data/fate/vsynth1-dv.dv
-02ac7cdeab91d4d5621e7ce96dddc498 *tests/data/fate/vsynth1-dv.out.rawvideo
+1cda5a62c3a2f17cc7d5b4cddccf2524 *tests/data/fate/vsynth1-dv.out.rawvideo
 stddev:    6.90 PSNR: 31.34 MAXDIFF:   76 bytes:  7603200/  7603200

tests/ref/vsynth/vsynth1-dv-411

@@ -1,4 +1,4 @@
 f179899efba432c6f01149c36c709092 *tests/data/fate/vsynth1-dv-411.dv
 7200000 tests/data/fate/vsynth1-dv-411.dv
-53946d51762b7826773e681fb02f377b *tests/data/fate/vsynth1-dv-411.out.rawvideo
-stddev:    9.45 PSNR: 28.62 MAXDIFF:   84 bytes:  7603200/  7603200
+48904744fabbbc3421a762f615ef6456 *tests/data/fate/vsynth1-dv-411.out.rawvideo
+stddev:    9.44 PSNR: 28.62 MAXDIFF:   84 bytes:  7603200/  7603200

tests/ref/vsynth/vsynth1-dv-50

@@ -1,4 +1,4 @@
 a193c5f92bf6e74c604e759d5f4f0f94 *tests/data/fate/vsynth1-dv-50.dv
 14400000 tests/data/fate/vsynth1-dv-50.dv
-a2ff093e93ffed10f730fa21df02fc50 *tests/data/fate/vsynth1-dv-50.out.rawvideo
+41c4df5f2d876fcd5245643b9ded6711 *tests/data/fate/vsynth1-dv-50.out.rawvideo
 stddev:    1.72 PSNR: 43.38 MAXDIFF:   29 bytes:  7603200/  7603200

tests/ref/vsynth/vsynth2-dv

@@ -1,4 +1,4 @@
 85b8d55b0b68bb3fc2e90babb580f9b7 *tests/data/fate/vsynth2-dv.dv
 7200000 tests/data/fate/vsynth2-dv.dv
-7ec62bd3350a6848364669e6e1e4b9cc *tests/data/fate/vsynth2-dv.out.rawvideo
-stddev:    1.71 PSNR: 43.47 MAXDIFF:   33 bytes:  7603200/  7603200
+7dac420637360b031ccae7c5a69c5e0c *tests/data/fate/vsynth2-dv.out.rawvideo
+stddev:    1.70 PSNR: 43.47 MAXDIFF:   33 bytes:  7603200/  7603200

tests/ref/vsynth/vsynth2-dv-411

@@ -1,4 +1,4 @@
 e428508f400327aeb96969c08fb9e1b5 *tests/data/fate/vsynth2-dv-411.dv
 7200000 tests/data/fate/vsynth2-dv-411.dv
-3cd4b85065d67bfb7fbab3bea4039711 *tests/data/fate/vsynth2-dv-411.out.rawvideo
+713ed907fde448c603d6e9aee5efedd1 *tests/data/fate/vsynth2-dv-411.out.rawvideo
 stddev:    2.89 PSNR: 38.91 MAXDIFF:   45 bytes:  7603200/  7603200

tests/ref/vsynth/vsynth2-dv-50

@@ -1,4 +1,4 @@
 0032a07167199e6f49e07fa7ed4d5f62 *tests/data/fate/vsynth2-dv-50.dv
 14400000 tests/data/fate/vsynth2-dv-50.dv
-af3f2dd5ab62c1a1d98b07d4aeb6852f *tests/data/fate/vsynth2-dv-50.out.rawvideo
+56c77e537291536b242857d1056de30c *tests/data/fate/vsynth2-dv-50.out.rawvideo
 stddev:    0.82 PSNR: 49.82 MAXDIFF:   12 bytes:  7603200/  7603200