1 files changed, 39 insertions, 10 deletions

diff --git a/libavcodec/svq3.c b/libavcodec/svq3.c
index 5cac59c249..f8b6c5f07a 100644
--- a/libavcodec/svq3.c
+++ b/libavcodec/svq3.c
@@ -1,20 +1,20 @@
 /*
- * Copyright (c) 2003 The Libav Project
+ * Copyright (c) 2003 The FFmpeg Project
  *
- * This file is part of Libav.
+ * This file is part of FFmpeg.
  *
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg 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,
+ * FFmpeg 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
+ * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
@@ -37,7 +37,7 @@
  *
  * You will know you have these parameters passed correctly when the decoder
  * correctly decodes this file:
- *  http://samples.libav.org/V-codecs/SVQ3/Vertical400kbit.sorenson3.mov
+ *  http://samples.mplayerhq.hu/V-codecs/SVQ3/Vertical400kbit.sorenson3.mov
  */
 #include "internal.h"
 #include "dsputil.h"
@@ -70,6 +70,8 @@ typedef struct {
     int unknown_flag;
     int next_slice_index;
     uint32_t watermark_key;
+    uint8_t *buf;
+    int buf_size;
 } SVQ3Context;
 
 #define FULLPEL_MODE  1
@@ -829,6 +831,7 @@ static av_cold int svq3_decode_init(AVCodecContext *avctx)
         svq3->thirdpel_flag = 1;
         svq3->unknown_flag  = 0;
 
+
         /* prowl for the "SEQH" marker in the extradata */
         extradata = (unsigned char *)avctx->extradata;
         for (m = 0; m < avctx->extradata_size; m++) {
@@ -934,12 +937,12 @@ static int svq3_decode_frame(AVCodecContext *avctx,
                              void *data, int *data_size,
                              AVPacket *avpkt)
 {
-    const uint8_t *buf = avpkt->data;
     SVQ3Context *svq3 = avctx->priv_data;
     H264Context *h = &svq3->h;
     MpegEncContext *s = &h->s;
     int buf_size = avpkt->size;
-    int m, mb_type;
+    int m, mb_type, left;
+    uint8_t *buf;
 
     /* special case for last picture */
     if (buf_size == 0) {
@@ -951,10 +954,21 @@ static int svq3_decode_frame(AVCodecContext *avctx,
         return 0;
     }
 
-    init_get_bits (&s->gb, buf, 8*buf_size);
-
     s->mb_x = s->mb_y = h->mb_xy = 0;
 
+    if (svq3->watermark_key) {
+        av_fast_malloc(&svq3->buf, &svq3->buf_size,
+                       buf_size+FF_INPUT_BUFFER_PADDING_SIZE);
+        if (!svq3->buf)
+            return AVERROR(ENOMEM);
+        memcpy(svq3->buf, avpkt->data, buf_size);
+        buf = svq3->buf;
+    } else {
+        buf = avpkt->data;
+    }
+
+    init_get_bits(&s->gb, buf, 8*buf_size);
+
     if (svq3_decode_slice_header(avctx))
         return -1;
 
@@ -1061,6 +1075,18 @@ static int svq3_decode_frame(AVCodecContext *avctx,
         ff_draw_horiz_band(s, 16*s->mb_y, 16);
     }
 
+    left = buf_size*8 - get_bits_count(&s->gb);
+
+    if (s->mb_y != s->mb_height || s->mb_x != s->mb_width) {
+        av_log(avctx, AV_LOG_INFO, "frame num %d incomplete pic x %d y %d left %d\n", avctx->frame_number, s->mb_y, s->mb_x, left);
+        //av_hex_dump(stderr, buf+buf_size-8, 8);
+    }
+
+    if (left < 0) {
+        av_log(avctx, AV_LOG_ERROR, "frame num %d left %d\n", avctx->frame_number, left);
+        return -1;
+    }
+
     MPV_frame_end(s);
 
     if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) {
@@ -1087,6 +1113,9 @@ static int svq3_decode_end(AVCodecContext *avctx)
 
     MPV_common_end(s);
 
+    av_freep(&svq3->buf);
+    svq3->buf_size = 0;
+
     return 0;
 }