h264: init prev_frame_num to -1 on init

[ffmpeg] / libavcodec / indeo2.c

diff --git a/libavcodec/indeo2.c b/libavcodec/indeo2.c
index 591c1ceb89fb9e13675cc91b79fe1bcf1ee9d22b..871a604406a99f9d555356239abbdccfaf915868 100644 (file)
--- a/libavcodec/indeo2.c
+++ b/libavcodec/indeo2.c
@@ -2,20 +2,20 @@
  * Intel Indeo 2 codec
  * Copyright (c) 2005 Konstantin Shishkov
  *
- * 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
  */
 
@@ -146,16 +146,20 @@ static int ir2_decode_frame(AVCodecContext *avctx,
     AVFrame * const p= (AVFrame*)&s->picture;
     int start;
 
-    if(p->data[0])
-        avctx->release_buffer(avctx, p);
-
-    p->reference = 1;
+    p->reference = 3;
     p->buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
     if (avctx->reget_buffer(avctx, p)) {
         av_log(s->avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
         return -1;
     }
 
+    start = 48; /* hardcoded for now */
+
+    if (start >= buf_size) {
+        av_log(s->avctx, AV_LOG_ERROR, "input buffer size too small (%d)\n", buf_size);
+        return AVERROR_INVALIDDATA;
+    }
+
     s->decode_delta = buf[18];
 
     /* decide whether frame uses deltas or not */
@@ -163,7 +167,6 @@ static int ir2_decode_frame(AVCodecContext *avctx,
     for (i = 0; i < buf_size; i++)
         buf[i] = av_reverse[buf[i]];
 #endif
-    start = 48; /* hardcoded for now */
 
     init_get_bits(&s->gb, buf + start, (buf_size - start) * 8);
 
@@ -195,6 +198,7 @@ static av_cold int ir2_decode_init(AVCodecContext *avctx){
     Ir2Context * const ic = avctx->priv_data;
     static VLC_TYPE vlc_tables[1 << CODE_VLC_BITS][2];
 
+    avcodec_get_frame_defaults(&ic->picture);
     ic->avctx = avctx;
 
     avctx->pix_fmt= PIX_FMT_YUV410P;