diff options
| -rw-r--r-- | libavcodec/zmbv.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/libavcodec/zmbv.c b/libavcodec/zmbv.c index 898b62d065..99e735cfd9 100644 --- a/libavcodec/zmbv.c +++ b/libavcodec/zmbv.c @@ -121,6 +121,8 @@ static int zmbv_decode_xor_8(ZmbvContext *c) for (j = 0; j < bh2; j++) { if (my + j < 0 || my + j >= c->height) { memset(out, 0, bw2); + } else if (mx >= 0 && mx + bw2 <= c->width){ + memcpy(out, tprev, sizeof(*out) * bw2); } else { for (i = 0; i < bw2; i++) { if (mx + i < 0 || mx + i >= c->width) @@ -193,6 +195,8 @@ static int zmbv_decode_xor_16(ZmbvContext *c) for (j = 0; j < bh2; j++) { if (my + j < 0 || my + j >= c->height) { memset(out, 0, bw2 * 2); + } else if (mx >= 0 && mx + bw2 <= c->width){ + memcpy(out, tprev, sizeof(*out) * bw2); } else { for (i = 0; i < bw2; i++) { if (mx + i < 0 || mx + i >= c->width) @@ -270,6 +274,8 @@ static int zmbv_decode_xor_24(ZmbvContext *c) for (j = 0; j < bh2; j++) { if (my + j < 0 || my + j >= c->height) { memset(out, 0, bw2 * 3); + } else if (mx >= 0 && mx + bw2 <= c->width){ + memcpy(out, tprev, 3 * bw2); } else { for (i = 0; i < bw2; i++){ if (mx + i < 0 || mx + i >= c->width) { @@ -351,6 +357,8 @@ static int zmbv_decode_xor_32(ZmbvContext *c) for (j = 0; j < bh2; j++) { if (my + j < 0 || my + j >= c->height) { memset(out, 0, bw2 * 4); + } else if (mx >= 0 && mx + bw2 <= c->width){ + memcpy(out, tprev, sizeof(*out) * bw2); } else { for (i = 0; i < bw2; i++){ if (mx + i < 0 || mx + i >= c->width) |