wmv2: move IDCT to its own DSP context.

This allows us to remove FF_IDCT_WMV2, which serves no practical purpose
other than to be able to select the WMV2 IDCT for MPEG (or vice versa)
and get corrupt output.

Fate tests for all wmv2-related tests change, because (for some obscure
reason) they forced use of the MPEG IDCT. You would get the same changes
previously by not using -idct simple in the fate test (or replacing it
with -idct auto).

libavcodec/Makefile

@@ -410,10 +410,10 @@ OBJS-$(CONFIG_WMAVOICE_DECODER)        += wmavoice.o \
                                           celp_filters.o \
                                           acelp_vectors.o acelp_filters.o
 OBJS-$(CONFIG_WMV1_DECODER)            += msmpeg4.o msmpeg4data.o
-OBJS-$(CONFIG_WMV2_DECODER)            += wmv2dec.o wmv2.o        \
+OBJS-$(CONFIG_WMV2_DECODER)            += wmv2dec.o wmv2.o wmv2dsp.o \
                                           msmpeg4.o msmpeg4data.o \
                                           intrax8.o intrax8dsp.o
-OBJS-$(CONFIG_WMV2_ENCODER)            += wmv2enc.o wmv2.o \
+OBJS-$(CONFIG_WMV2_ENCODER)            += wmv2enc.o wmv2.o wmv2dsp.o \
                                           msmpeg4.o msmpeg4enc.o msmpeg4data.o \
                                           mpeg4videodec.o ituh263dec.o h263dec.o
 OBJS-$(CONFIG_WNV1_DECODER)            += wnv1.o

libavcodec/dsputil.c

@@ -2482,90 +2482,6 @@ static void vector_clip_int32_c(int32_t *dst, const int32_t *src, int32_t min,
     } while (len > 0);
 }
 
-#define W0 2048
-#define W1 2841 /* 2048*sqrt (2)*cos (1*pi/16) */
-#define W2 2676 /* 2048*sqrt (2)*cos (2*pi/16) */
-#define W3 2408 /* 2048*sqrt (2)*cos (3*pi/16) */
-#define W4 2048 /* 2048*sqrt (2)*cos (4*pi/16) */
-#define W5 1609 /* 2048*sqrt (2)*cos (5*pi/16) */
-#define W6 1108 /* 2048*sqrt (2)*cos (6*pi/16) */
-#define W7 565  /* 2048*sqrt (2)*cos (7*pi/16) */
-
-static void wmv2_idct_row(short * b)
-{
-    int s1,s2;
-    int a0,a1,a2,a3,a4,a5,a6,a7;
-    /*step 1*/
-    a1 = W1*b[1]+W7*b[7];
-    a7 = W7*b[1]-W1*b[7];
-    a5 = W5*b[5]+W3*b[3];
-    a3 = W3*b[5]-W5*b[3];
-    a2 = W2*b[2]+W6*b[6];
-    a6 = W6*b[2]-W2*b[6];
-    a0 = W0*b[0]+W0*b[4];
-    a4 = W0*b[0]-W0*b[4];
-    /*step 2*/
-    s1 = (181*(a1-a5+a7-a3)+128)>>8;//1,3,5,7,
-    s2 = (181*(a1-a5-a7+a3)+128)>>8;
-    /*step 3*/
-    b[0] = (a0+a2+a1+a5 + (1<<7))>>8;
-    b[1] = (a4+a6 +s1   + (1<<7))>>8;
-    b[2] = (a4-a6 +s2   + (1<<7))>>8;
-    b[3] = (a0-a2+a7+a3 + (1<<7))>>8;
-    b[4] = (a0-a2-a7-a3 + (1<<7))>>8;
-    b[5] = (a4-a6 -s2   + (1<<7))>>8;
-    b[6] = (a4+a6 -s1   + (1<<7))>>8;
-    b[7] = (a0+a2-a1-a5 + (1<<7))>>8;
-}
-static void wmv2_idct_col(short * b)
-{
-    int s1,s2;
-    int a0,a1,a2,a3,a4,a5,a6,a7;
-    /*step 1, with extended precision*/
-    a1 = (W1*b[8*1]+W7*b[8*7] + 4)>>3;
-    a7 = (W7*b[8*1]-W1*b[8*7] + 4)>>3;
-    a5 = (W5*b[8*5]+W3*b[8*3] + 4)>>3;
-    a3 = (W3*b[8*5]-W5*b[8*3] + 4)>>3;
-    a2 = (W2*b[8*2]+W6*b[8*6] + 4)>>3;
-    a6 = (W6*b[8*2]-W2*b[8*6] + 4)>>3;
-    a0 = (W0*b[8*0]+W0*b[8*4]    )>>3;
-    a4 = (W0*b[8*0]-W0*b[8*4]    )>>3;
-    /*step 2*/
-    s1 = (181*(a1-a5+a7-a3)+128)>>8;
-    s2 = (181*(a1-a5-a7+a3)+128)>>8;
-    /*step 3*/
-    b[8*0] = (a0+a2+a1+a5 + (1<<13))>>14;
-    b[8*1] = (a4+a6 +s1   + (1<<13))>>14;
-    b[8*2] = (a4-a6 +s2   + (1<<13))>>14;
-    b[8*3] = (a0-a2+a7+a3 + (1<<13))>>14;
-
-    b[8*4] = (a0-a2-a7-a3 + (1<<13))>>14;
-    b[8*5] = (a4-a6 -s2   + (1<<13))>>14;
-    b[8*6] = (a4+a6 -s1   + (1<<13))>>14;
-    b[8*7] = (a0+a2-a1-a5 + (1<<13))>>14;
-}
-void ff_wmv2_idct_c(short * block){
-    int i;
-
-    for(i=0;i<64;i+=8){
-        wmv2_idct_row(block+i);
-    }
-    for(i=0;i<8;i++){
-        wmv2_idct_col(block+i);
-    }
-}
-/* XXX: those functions should be suppressed ASAP when all IDCTs are
- converted */
-static void ff_wmv2_idct_put_c(uint8_t *dest, int line_size, DCTELEM *block)
-{
-    ff_wmv2_idct_c(block);
-    put_pixels_clamped_c(block, dest, line_size);
-}
-static void ff_wmv2_idct_add_c(uint8_t *dest, int line_size, DCTELEM *block)
-{
-    ff_wmv2_idct_c(block);
-    add_pixels_clamped_c(block, dest, line_size);
-}
 static void ff_jref_idct_put(uint8_t *dest, int line_size, DCTELEM *block)
 {
     ff_j_rev_dct (block);
@@ -2650,11 +2566,6 @@ av_cold void ff_dsputil_init(DSPContext* c, AVCodecContext *avctx)
             c->idct_add= ff_jref_idct_add;
             c->idct    = ff_j_rev_dct;
             c->idct_permutation_type= FF_LIBMPEG2_IDCT_PERM;
-        }else if(avctx->idct_algo==FF_IDCT_WMV2){
-            c->idct_put= ff_wmv2_idct_put_c;
-            c->idct_add= ff_wmv2_idct_add_c;
-            c->idct    = ff_wmv2_idct_c;
-            c->idct_permutation_type= FF_NO_IDCT_PERM;
         }else if(avctx->idct_algo==FF_IDCT_FAAN){
             c->idct_put= ff_faanidct_put;
             c->idct_add= ff_faanidct_add;

libavcodec/dsputil.h

@@ -46,7 +46,6 @@ void ff_fdct248_islow_8(DCTELEM *data);
 void ff_fdct248_islow_10(DCTELEM *data);
 
 void ff_j_rev_dct (DCTELEM *data);
-void ff_wmv2_idct_c(DCTELEM *data);
 
 void ff_fdct_mmx(DCTELEM *block);
 void ff_fdct_mmxext(DCTELEM *block);

libavcodec/wmv2.c

@@ -28,8 +28,24 @@
 av_cold void ff_wmv2_common_init(Wmv2Context * w){
     MpegEncContext * const s= &w->s;
 
-    ff_init_scantable(s->dsp.idct_permutation, &w->abt_scantable[0], ff_wmv2_scantableA);
-    ff_init_scantable(s->dsp.idct_permutation, &w->abt_scantable[1], ff_wmv2_scantableB);
+    ff_wmv2dsp_init(&w->wdsp);
+    ff_init_scantable_permutation(s->dsp.idct_permutation,
+                                  w->wdsp.idct_perm);
+    ff_init_scantable(s->dsp.idct_permutation, &w->abt_scantable[0],
+                      ff_wmv2_scantableA);
+    ff_init_scantable(s->dsp.idct_permutation, &w->abt_scantable[1],
+                      ff_wmv2_scantableB);
+    ff_init_scantable(s->dsp.idct_permutation, &s->intra_scantable,
+                      ff_wmv1_scantable[1]);
+    ff_init_scantable(s->dsp.idct_permutation, &s->intra_h_scantable,
+                      ff_wmv1_scantable[2]);
+    ff_init_scantable(s->dsp.idct_permutation, &s->intra_v_scantable,
+                      ff_wmv1_scantable[3]);
+    ff_init_scantable(s->dsp.idct_permutation, &s->inter_scantable,
+                      ff_wmv1_scantable[0]);
+    s->dsp.idct_put = w->wdsp.idct_put;
+    s->dsp.idct_add = w->wdsp.idct_add;
+    s->dsp.idct     = NULL;
 }
 
 static void wmv2_add_block(Wmv2Context *w, DCTELEM *block1, uint8_t *dst, int stride, int n){
@@ -38,7 +54,7 @@ static void wmv2_add_block(Wmv2Context *w, DCTELEM *block1, uint8_t *dst, int st
   if (s->block_last_index[n] >= 0) {
     switch(w->abt_type_table[n]){
     case 0:
-        s->dsp.idct_add (dst, stride, block1);
+        w->wdsp.idct_add(dst, stride, block1);
         break;
     case 1:
         ff_simple_idct84_add(dst           , stride, block1);

libavcodec/wmv2.h

@@ -25,6 +25,7 @@
 #include "dsputil.h"
 #include "mpegvideo.h"
 #include "intrax8.h"
+#include "wmv2dsp.h"
 
 #define SKIP_TYPE_NONE 0
 #define SKIP_TYPE_MPEG 1
@@ -35,6 +36,7 @@
 typedef struct Wmv2Context{
     MpegEncContext s;
     IntraX8Context x8;
+    WMV2DSPContext wdsp;
     int j_type_bit;
     int j_type;
     int abt_flag;

libavcodec/wmv2dec.c

@@ -447,10 +447,6 @@ int ff_wmv2_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
 static av_cold int wmv2_decode_init(AVCodecContext *avctx){
     Wmv2Context * const w= avctx->priv_data;
 
-    if(avctx->idct_algo==FF_IDCT_AUTO){
-        avctx->idct_algo=FF_IDCT_WMV2;
-    }
-
     if(ff_msmpeg4_decode_init(avctx) < 0)
         return -1;
 

libavcodec/wmv2dsp.c

@@ -0,0 +1,145 @@
+/*
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/attributes.h"
+#include "libavutil/common.h"
+#include "avcodec.h"
+#include "wmv2dsp.h"
+
+#define W0 2048
+#define W1 2841 /* 2048*sqrt (2)*cos (1*pi/16) */
+#define W2 2676 /* 2048*sqrt (2)*cos (2*pi/16) */
+#define W3 2408 /* 2048*sqrt (2)*cos (3*pi/16) */
+#define W4 2048 /* 2048*sqrt (2)*cos (4*pi/16) */
+#define W5 1609 /* 2048*sqrt (2)*cos (5*pi/16) */
+#define W6 1108 /* 2048*sqrt (2)*cos (6*pi/16) */
+#define W7 565  /* 2048*sqrt (2)*cos (7*pi/16) */
+
+static void wmv2_idct_row(short * b)
+{
+    int s1, s2;
+    int a0, a1, a2, a3, a4, a5, a6, a7;
+
+    /* step 1 */
+    a1 = W1 * b[1] + W7 * b[7];
+    a7 = W7 * b[1] - W1 * b[7];
+    a5 = W5 * b[5] + W3 * b[3];
+    a3 = W3 * b[5] - W5 * b[3];
+    a2 = W2 * b[2] + W6 * b[6];
+    a6 = W6 * b[2] - W2 * b[6];
+    a0 = W0 * b[0] + W0 * b[4];
+    a4 = W0 * b[0] - W0 * b[4];
+
+    /* step 2 */
+    s1 = (181 * (a1 - a5 + a7 - a3) + 128) >> 8; // 1, 3, 5, 7
+    s2 = (181 * (a1 - a5 - a7 + a3) + 128) >> 8;
+
+    /* step 3 */
+    b[0] = (a0 + a2 + a1 + a5 + (1 << 7)) >> 8;
+    b[1] = (a4 + a6 + s1      + (1 << 7)) >> 8;
+    b[2] = (a4 - a6 + s2      + (1 << 7)) >> 8;
+    b[3] = (a0 - a2 + a7 + a3 + (1 << 7)) >> 8;
+    b[4] = (a0 - a2 - a7 - a3 + (1 << 7)) >> 8;
+    b[5] = (a4 - a6 - s2      + (1 << 7)) >> 8;
+    b[6] = (a4 + a6 - s1      + (1 << 7)) >> 8;
+    b[7] = (a0 + a2 - a1 - a5 + (1 << 7)) >> 8;
+}
+
+static void wmv2_idct_col(short * b)
+{
+    int s1, s2;
+    int a0, a1, a2, a3, a4, a5, a6, a7;
+
+    /* step 1, with extended precision */
+    a1 = (W1 * b[8 * 1] + W7 * b[8 * 7] + 4) >> 3;
+    a7 = (W7 * b[8 * 1] - W1 * b[8 * 7] + 4) >> 3;
+    a5 = (W5 * b[8 * 5] + W3 * b[8 * 3] + 4) >> 3;
+    a3 = (W3 * b[8 * 5] - W5 * b[8 * 3] + 4) >> 3;
+    a2 = (W2 * b[8 * 2] + W6 * b[8 * 6] + 4) >> 3;
+    a6 = (W6 * b[8 * 2] - W2 * b[8 * 6] + 4) >> 3;
+    a0 = (W0 * b[8 * 0] + W0 * b[8 * 4]    ) >> 3;
+    a4 = (W0 * b[8 * 0] - W0 * b[8 * 4]    ) >> 3;
+
+    /* step 2 */
+    s1 = (181 * (a1 - a5 + a7 - a3) + 128) >> 8;
+    s2 = (181 * (a1 - a5 - a7 + a3) + 128) >> 8;
+
+    /* step 3 */
+    b[8 * 0] = (a0 + a2 + a1 + a5 + (1 << 13)) >> 14;
+    b[8 * 1] = (a4 + a6 + s1      + (1 << 13)) >> 14;
+    b[8 * 2] = (a4 - a6 + s2      + (1 << 13)) >> 14;
+    b[8 * 3] = (a0 - a2 + a7 + a3 + (1 << 13)) >> 14;
+
+    b[8 * 4] = (a0 - a2 - a7 - a3 + (1 << 13)) >> 14;
+    b[8 * 5] = (a4 - a6 - s2      + (1 << 13)) >> 14;
+    b[8 * 6] = (a4 + a6 - s1      + (1 << 13)) >> 14;
+    b[8 * 7] = (a0 + a2 - a1 - a5 + (1 << 13)) >> 14;
+}
+
+static void wmv2_idct_add_c(uint8_t *dest, int line_size, DCTELEM *block)
+{
+    int i;
+
+    for (i = 0; i < 64; i += 8)
+        wmv2_idct_row(block + i);
+    for (i = 0; i < 8; i++)
+        wmv2_idct_col(block + i);
+
+    for (i = 0; i < 8; i++) {
+        dest[0] = av_clip_uint8(dest[0] + block[0]);
+        dest[1] = av_clip_uint8(dest[1] + block[1]);
+        dest[2] = av_clip_uint8(dest[2] + block[2]);
+        dest[3] = av_clip_uint8(dest[3] + block[3]);
+        dest[4] = av_clip_uint8(dest[4] + block[4]);
+        dest[5] = av_clip_uint8(dest[5] + block[5]);
+        dest[6] = av_clip_uint8(dest[6] + block[6]);
+        dest[7] = av_clip_uint8(dest[7] + block[7]);
+        dest += line_size;
+        block += 8;
+    }
+}
+
+static void wmv2_idct_put_c(uint8_t *dest, int line_size, DCTELEM *block)
+{
+    int i;
+
+    for (i = 0; i < 64; i += 8)
+        wmv2_idct_row(block + i);
+    for (i = 0; i < 8; i++)
+        wmv2_idct_col(block + i);
+
+    for (i = 0; i < 8; i++) {
+        dest[0] = av_clip_uint8(block[0]);
+        dest[1] = av_clip_uint8(block[1]);
+        dest[2] = av_clip_uint8(block[2]);
+        dest[3] = av_clip_uint8(block[3]);
+        dest[4] = av_clip_uint8(block[4]);
+        dest[5] = av_clip_uint8(block[5]);
+        dest[6] = av_clip_uint8(block[6]);
+        dest[7] = av_clip_uint8(block[7]);
+        dest += line_size;
+        block += 8;
+    }
+}
+
+av_cold void ff_wmv2dsp_init(WMV2DSPContext *c)
+{
+    c->idct_add  = wmv2_idct_add_c;
+    c->idct_put  = wmv2_idct_put_c;
+    c->idct_perm = FF_NO_IDCT_PERM;
+}

libavcodec/wmv2dsp.h

@@ -0,0 +1,34 @@
+/*
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_WMV2DSP_H
+#define AVCODEC_WMV2DSP_H
+
+#include <stdint.h>
+#include "dsputil.h"
+
+typedef struct WMV2DSPContext {
+    void (*idct_add)(uint8_t *dest, int line_size, DCTELEM *block);
+    void (*idct_put)(uint8_t *dest, int line_size, DCTELEM *block);
+
+    int idct_perm;
+} WMV2DSPContext;
+
+void ff_wmv2dsp_init(WMV2DSPContext *c);
+
+#endif /* AVCODEC_WMV2DSP_H */

tests/ref/seek/vsynth2-wmv2

@@ -2,45 +2,45 @@ ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:   5652 size:  8917
 ret: 0         st:-1 flags:0  ts:-1.000000
 ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:   5652 size:  8917
 ret: 0         st:-1 flags:1  ts: 1.894167
-ret: 0         st: 0 flags:1 dts: 1.440000 pts: 1.440000 pos:  83790 size: 11170
+ret: 0         st: 0 flags:1 dts: 1.440000 pts: 1.440000 pos:  83764 size: 11170
 ret: 0         st: 0 flags:0  ts: 0.800000
-ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos:  54572 size:  9989
+ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos:  54534 size:  9989
 ret:-1         st: 0 flags:1  ts:-0.320000
 ret:-1         st:-1 flags:0  ts: 2.576668
 ret: 0         st:-1 flags:1  ts: 1.470835
-ret: 0         st: 0 flags:1 dts: 1.440000 pts: 1.440000 pos:  83790 size: 11170
+ret: 0         st: 0 flags:1 dts: 1.440000 pts: 1.440000 pos:  83764 size: 11170
 ret: 0         st: 0 flags:0  ts: 0.360000
-ret: 0         st: 0 flags:1 dts: 0.480000 pts: 0.480000 pos:  29632 size:  8839
+ret: 0         st: 0 flags:1 dts: 0.480000 pts: 0.480000 pos:  29588 size:  8839
 ret:-1         st: 0 flags:1  ts:-0.760000
 ret:-1         st:-1 flags:0  ts: 2.153336
 ret: 0         st:-1 flags:1  ts: 1.047503
-ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos:  54572 size:  9989
+ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos:  54534 size:  9989
 ret: 0         st: 0 flags:0  ts:-0.040000
 ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:   5652 size:  8917
 ret: 0         st: 0 flags:1  ts: 2.840000
-ret: 0         st: 0 flags:1 dts: 1.920000 pts: 1.920000 pos: 116058 size: 11554
+ret: 0         st: 0 flags:1 dts: 1.920000 pts: 1.920000 pos: 116062 size: 11554
 ret: 0         st:-1 flags:0  ts: 1.730004
-ret: 0         st: 0 flags:1 dts: 1.920000 pts: 1.920000 pos: 116058 size: 11554
+ret: 0         st: 0 flags:1 dts: 1.920000 pts: 1.920000 pos: 116062 size: 11554
 ret: 0         st:-1 flags:1  ts: 0.624171
-ret: 0         st: 0 flags:1 dts: 0.480000 pts: 0.480000 pos:  29632 size:  8839
+ret: 0         st: 0 flags:1 dts: 0.480000 pts: 0.480000 pos:  29588 size:  8839
 ret: 0         st: 0 flags:0  ts:-0.480000
 ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:   5652 size:  8917
 ret: 0         st: 0 flags:1  ts: 2.400000
-ret: 0         st: 0 flags:1 dts: 1.920000 pts: 1.920000 pos: 116058 size: 11554
+ret: 0         st: 0 flags:1 dts: 1.920000 pts: 1.920000 pos: 116062 size: 11554
 ret: 0         st:-1 flags:0  ts: 1.306672
-ret: 0         st: 0 flags:1 dts: 1.440000 pts: 1.440000 pos:  83790 size: 11170
+ret: 0         st: 0 flags:1 dts: 1.440000 pts: 1.440000 pos:  83764 size: 11170
 ret: 0         st:-1 flags:1  ts: 0.200839
 ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:   5652 size:  8917
 ret: 0         st: 0 flags:0  ts:-0.920000
 ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:   5652 size:  8917
 ret: 0         st: 0 flags:1  ts: 2.000000
-ret: 0         st: 0 flags:1 dts: 1.920000 pts: 1.920000 pos: 116058 size: 11554
+ret: 0         st: 0 flags:1 dts: 1.920000 pts: 1.920000 pos: 116062 size: 11554
 ret: 0         st:-1 flags:0  ts: 0.883340
-ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos:  54572 size:  9989
+ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos:  54534 size:  9989
 ret:-1         st:-1 flags:1  ts:-0.222493
 ret:-1         st: 0 flags:0  ts: 2.680000
 ret: 0         st: 0 flags:1  ts: 1.560000
-ret: 0         st: 0 flags:1 dts: 1.440000 pts: 1.440000 pos:  83790 size: 11170
+ret: 0         st: 0 flags:1 dts: 1.440000 pts: 1.440000 pos:  83764 size: 11170
 ret: 0         st:-1 flags:0  ts: 0.460008
-ret: 0         st: 0 flags:1 dts: 0.480000 pts: 0.480000 pos:  29632 size:  8839
+ret: 0         st: 0 flags:1 dts: 0.480000 pts: 0.480000 pos:  29588 size:  8839
 ret:-1         st:-1 flags:1  ts:-0.645825

tests/ref/vsynth/vsynth1-wmv2

@@ -1,4 +1,4 @@
-fc0796c6c49a18034cef008d61c0d964 *tests/data/fate/vsynth1-wmv2.avi
-659840 tests/data/fate/vsynth1-wmv2.avi
-5182edba5b5e0354b39ce4f3604b62da *tests/data/fate/vsynth1-wmv2.out.rawvideo
-stddev:    7.97 PSNR: 30.09 MAXDIFF:  110 bytes:  7603200/  7603200
+3c8a93fa645574f5b11eb51cf0efd227 *tests/data/fate/vsynth1-wmv2.avi
+659162 tests/data/fate/vsynth1-wmv2.avi
+2d61f24836d54766e8d370f243d83dcd *tests/data/fate/vsynth1-wmv2.out.rawvideo
+stddev:    7.97 PSNR: 30.09 MAXDIFF:  105 bytes:  7603200/  7603200

tests/ref/vsynth/vsynth2-wmv2

@@ -1,4 +1,4 @@
-0760abea07c386ab956fa1bb8b14c599 *tests/data/fate/vsynth2-wmv2.avi
+c7db61ce6fc07e8fb9a7204992c2e4c4 *tests/data/fate/vsynth2-wmv2.avi
 129848 tests/data/fate/vsynth2-wmv2.avi
-81eee429b665254d19a06607463c0b5e *tests/data/fate/vsynth2-wmv2.out.rawvideo
-stddev:    5.33 PSNR: 33.60 MAXDIFF:   77 bytes:  7603200/  7603200
+288bdf1b411b814a067ceb00ac6b9d16 *tests/data/fate/vsynth2-wmv2.out.rawvideo
+stddev:    5.33 PSNR: 33.59 MAXDIFF:   77 bytes:  7603200/  7603200