diff --git a/libavcodec/dsputil.c b/libavcodec/dsputil.c
index 951236c8c3..036f9f7bf4 100644
--- a/libavcodec/dsputil.c
+++ b/libavcodec/dsputil.c
@@ -303,12 +303,6 @@ static void draw_edges_c(uint8_t *buf, int wrap, int width, int height, int w, i
     uint8_t *ptr, *last_line;
     int i;
 
-    last_line = buf + (height - 1) * wrap;
-    for(i=0;i<w;i++) {
-        /* top and bottom */
-        if (sides&EDGE_TOP)    memcpy(buf - (i + 1) * wrap, buf, width);
-        if (sides&EDGE_BOTTOM) memcpy(last_line + (i + 1) * wrap, last_line, width);
-    }
     /* left and right */
     ptr = buf;
     for(i=0;i<height;i++) {
@@ -316,18 +310,16 @@ static void draw_edges_c(uint8_t *buf, int wrap, int width, int height, int w, i
         memset(ptr + width, ptr[width-1], w);
         ptr += wrap;
     }
-    /* corners */
-    for(i=0;i<w;i++) {
-        if (sides&EDGE_TOP) {
-            memset(buf - (i + 1) * wrap - w, buf[0], w); /* top left */
-            memset(buf - (i + 1) * wrap + width, buf[width-1], w); /* top right */
-        }
 
-        if (sides&EDGE_BOTTOM) {
-            memset(last_line + (i + 1) * wrap - w, last_line[0], w); /* top left */
-            memset(last_line + (i + 1) * wrap + width, last_line[width-1], w); /* top right */
-        }
-    }
+    /* top and bottom + corners */
+    buf -= w;
+    last_line = buf + (height - 1) * wrap;
+    if (sides & EDGE_TOP)
+        for(i = 0; i < w; i++)
+            memcpy(buf - (i + 1) * wrap, buf, width + w + w); // top
+    if (sides & EDGE_BOTTOM)
+        for (i = 0; i < w; i++)
+            memcpy(last_line + (i + 1) * wrap, last_line, width + w + w); // bottom
 }
 
 /**
diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c
index aa5378b542..dd003b48c3 100644
--- a/libavcodec/mpegvideo.c
+++ b/libavcodec/mpegvideo.c
@@ -1165,9 +1165,9 @@ void MPV_frame_end(MpegEncContext *s)
        && !(s->flags&CODEC_FLAG_EMU_EDGE)) {
         int edges = EDGE_BOTTOM | EDGE_TOP, h = s->v_edge_pos;
 
-            s->dsp.draw_edges(s->current_picture_ptr->data[0], s->linesize  , s->h_edge_pos   , h   , EDGE_WIDTH  , edges);
-            s->dsp.draw_edges(s->current_picture_ptr->data[1], s->uvlinesize, s->h_edge_pos>>1, h>>1, EDGE_WIDTH/2, edges);
-            s->dsp.draw_edges(s->current_picture_ptr->data[2], s->uvlinesize, s->h_edge_pos>>1, h>>1, EDGE_WIDTH/2, edges);
+            s->dsp.draw_edges(s->current_picture.data[0], s->linesize  , s->h_edge_pos   , h   , EDGE_WIDTH  , edges);
+            s->dsp.draw_edges(s->current_picture.data[1], s->uvlinesize, s->h_edge_pos>>1, h>>1, EDGE_WIDTH/2, edges);
+            s->dsp.draw_edges(s->current_picture.data[2], s->uvlinesize, s->h_edge_pos>>1, h>>1, EDGE_WIDTH/2, edges);
 
     }
 
diff --git a/libavcodec/x86/dsputil_mmx.c b/libavcodec/x86/dsputil_mmx.c
index c163a16848..d06ad6309d 100644
--- a/libavcodec/x86/dsputil_mmx.c
+++ b/libavcodec/x86/dsputil_mmx.c
@@ -836,9 +836,9 @@ static void draw_edges_mmx(uint8_t *buf, int wrap, int width, int height, int w,
         );
     }
 
-    for(i=0;i<w;i+=4) {
-        /* top and bottom (and hopefully also the corners) */
-        if (sides&EDGE_TOP) {
+    /* top and bottom (and hopefully also the corners) */
+    if (sides&EDGE_TOP) {
+        for(i = 0; i < w; i += 4) {
             ptr= buf - (i + 1) * wrap - w;
             __asm__ volatile(
                     "1:                             \n\t"
@@ -854,8 +854,10 @@ static void draw_edges_mmx(uint8_t *buf, int wrap, int width, int height, int w,
                     : "r" ((x86_reg)buf - (x86_reg)ptr - w), "r" ((x86_reg)-wrap), "r" ((x86_reg)-wrap*3), "r" (ptr+width+2*w)
             );
         }
+    }
 
-        if (sides&EDGE_BOTTOM) {
+    if (sides&EDGE_BOTTOM) {
+        for(i = 0; i < w; i += 4) {
             ptr= last_line + (i + 1) * wrap - w;
             __asm__ volatile(
                     "1:                             \n\t"
diff --git a/tests/fate.mak b/tests/fate.mak
index 21158fc13c..0e3331178b 100644
--- a/tests/fate.mak
+++ b/tests/fate.mak
@@ -204,8 +204,10 @@ FATE_TESTS += fate-pcm_dvd
 fate-pcm_dvd: CMD = framecrc  -i $(SAMPLES)/pcm-dvd/coolitnow-partial.vob -vn
 FATE_TESTS += fate-psx-str
 fate-psx-str: CMD = framecrc  -i $(SAMPLES)/psx-str/descent-partial.str
-FATE_TESTS += fate-psx-str-v3
-fate-psx-str-v3: CMD = framecrc  -i $(SAMPLES)/psx-str/abc000_cut.str
+FATE_TESTS += fate-psx-str-v3-mdec
+fate-psx-str-v3-mdec: CMD = framecrc  -i $(SAMPLES)/psx-str/abc000_cut.str -an
+FATE_TESTS += fate-psx-str-v3-adpcm_xa
+fate-psx-str-v3-adpcm_xa: CMD = framecrc  -i $(SAMPLES)/psx-str/abc000_cut.str -vn
 FATE_TESTS += fate-ptx
 fate-ptx: CMD = framecrc  -i $(SAMPLES)/ptx/_113kw_pic.ptx -pix_fmt rgb24
 FATE_TESTS += fate-pva-demux
diff --git a/tests/ref/fate/psx-str-v3-adpcm_xa b/tests/ref/fate/psx-str-v3-adpcm_xa
new file mode 100644
index 0000000000..ee0c3543d3
--- /dev/null
+++ b/tests/ref/fate/psx-str-v3-adpcm_xa
@@ -0,0 +1,37 @@
+0, 0, 8064, 0xa307ed8c
+0, 4800, 8064, 0xd2551927
+0, 9600, 8064, 0x3264a799
+0, 14400, 8064, 0x75da1393
+0, 19200, 8064, 0x68665f59
+0, 24000, 8064, 0xaf266a18
+0, 28800, 8064, 0x4d4b69fd
+0, 33600, 8064, 0x129d7e17
+0, 38400, 8064, 0x78c56725
+0, 43200, 8064, 0x59902cf1
+0, 48000, 8064, 0x6e699c87
+0, 52800, 8064, 0xc30692d7
+0, 57600, 8064, 0x29c043e5
+0, 62400, 8064, 0x61907704
+0, 67200, 8064, 0xf9210630
+0, 72000, 8064, 0xc0bdda08
+0, 76800, 8064, 0x6171b96d
+0, 81600, 8064, 0x082947cf
+0, 86400, 8064, 0xf7bbf1ce
+0, 91200, 8064, 0xe50e4436
+0, 96000, 8064, 0x2a860844
+0, 100800, 8064, 0xedcb502c
+0, 105600, 8064, 0x448e3c7f
+0, 110400, 8064, 0xf782f366
+0, 115200, 8064, 0xf57f66a5
+0, 120000, 8064, 0xdcc36939
+0, 124800, 8064, 0x34959d99
+0, 129600, 8064, 0xa5c20433
+0, 134400, 8064, 0xf1364e9b
+0, 139200, 8064, 0x232fe9c7
+0, 144000, 8064, 0xdc068d5a
+0, 148800, 8064, 0x4962e812
+0, 153600, 8064, 0x36a6709b
+0, 158400, 8064, 0xa2837bd8
+0, 163200, 8064, 0x68612ddb
+0, 168000, 8064, 0x8d76d1cb
+0, 172800, 8064, 0x7707cfc7
diff --git a/tests/ref/fate/psx-str-v3 b/tests/ref/fate/psx-str-v3-mdec
similarity index 62%
rename from tests/ref/fate/psx-str-v3
rename to tests/ref/fate/psx-str-v3-mdec
index 3ea065b212..52a3835d2a 100644
--- a/tests/ref/fate/psx-str-v3
+++ b/tests/ref/fate/psx-str-v3-mdec
@@ -1,69 +1,32 @@
 0, 0, 76800, 0x2677be82
-1, 0, 8064, 0xa307ed8c
-1, 4800, 8064, 0xd2551927
 0, 6000, 76800, 0x1f323c75
-1, 9600, 8064, 0x3264a799
 0, 12000, 76800, 0xc8be3be9
-1, 14400, 8064, 0x75da1393
 0, 18000, 76800, 0x1f323c75
-1, 19200, 8064, 0x68665f59
 0, 24000, 76800, 0x7e484488
-1, 24000, 8064, 0xaf266a18
-1, 28800, 8064, 0x4d4b69fd
 0, 30000, 76800, 0x8bd644aa
-1, 33600, 8064, 0x129d7e17
 0, 36000, 76800, 0xaa62e7b8
-1, 38400, 8064, 0x78c56725
 0, 42000, 76800, 0xaa62e7b8
-1, 43200, 8064, 0x59902cf1
 0, 48000, 76800, 0x53fadb39
-1, 48000, 8064, 0x6e699c87
-1, 52800, 8064, 0xc30692d7
 0, 54000, 76800, 0x53fadb39
-1, 57600, 8064, 0x29c043e5
 0, 60000, 76800, 0x1ff9d964
-1, 62400, 8064, 0x61907704
 0, 66000, 76800, 0x1ff9d964
-1, 67200, 8064, 0xf9210630
 0, 72000, 76800, 0xd8c8d947
-1, 72000, 8064, 0xc0bdda08
-1, 76800, 8064, 0x6171b96d
 0, 78000, 76800, 0xd8c8d947
-1, 81600, 8064, 0x082947cf
 0, 84000, 76800, 0x6d0bd94c
-1, 86400, 8064, 0xf7bbf1ce
 0, 90000, 76800, 0x6d0bd94c
-1, 91200, 8064, 0xe50e4436
 0, 96000, 76800, 0x7e66d948
-1, 96000, 8064, 0x2a860844
-1, 100800, 8064, 0xedcb502c
 0, 102000, 76800, 0x7e66d948
-1, 105600, 8064, 0x448e3c7f
 0, 108000, 76800, 0x8eecfd72
-1, 110400, 8064, 0xf782f366
 0, 114000, 76800, 0xb15f29ab
-1, 115200, 8064, 0xf57f66a5
 0, 120000, 76800, 0x08e5502e
-1, 120000, 8064, 0xdcc36939
-1, 124800, 8064, 0x34959d99
 0, 126000, 76800, 0xaa58796d
-1, 129600, 8064, 0xa5c20433
 0, 132000, 76800, 0xe254a27c
-1, 134400, 8064, 0xf1364e9b
 0, 138000, 76800, 0xeec8cf68
-1, 139200, 8064, 0x232fe9c7
 0, 144000, 76800, 0x812bf8ee
-1, 144000, 8064, 0xdc068d5a
-1, 148800, 8064, 0x4962e812
 0, 150000, 76800, 0x929922ef
-1, 153600, 8064, 0x36a6709b
 0, 156000, 76800, 0xe1174e06
-1, 158400, 8064, 0xa2837bd8
 0, 162000, 76800, 0x2da77bf1
-1, 163200, 8064, 0x68612ddb
 0, 168000, 76800, 0xd0f6a727
-1, 168000, 8064, 0x8d76d1cb
-1, 172800, 8064, 0x7707cfc7
 0, 174000, 76800, 0x31bfd168
 0, 180000, 76800, 0xb87af225
 0, 186000, 76800, 0xd0080859