[FFmpeg-devel] [PATCH] svq1dec: replace VLA with malloc/free
Mans Rullgard
mans
Thu Jun 24 13:04:04 CEST 2010
---
libavcodec/svq1dec.c | 15 +++++++++++----
1 files changed, 11 insertions(+), 4 deletions(-)
diff --git a/libavcodec/svq1dec.c b/libavcodec/svq1dec.c
index 2aa28ab..1d40f59 100644
--- a/libavcodec/svq1dec.c
+++ b/libavcodec/svq1dec.c
@@ -650,6 +650,7 @@ static int svq1_decode_frame(AVCodecContext *avctx,
uint8_t *current, *previous;
int result, i, x, y, width, height;
AVFrame *pict = data;
+ svq1_pmv *pmv;
/* initialize bit buffer */
init_get_bits(&s->gb,buf,buf_size*8);
@@ -692,6 +693,10 @@ static int svq1_decode_frame(AVCodecContext *avctx,
if(MPV_frame_start(s, avctx) < 0)
return -1;
+ pmv = av_malloc((FFALIGN(s->width, 16)/8 + 3) * sizeof(*pmv));
+ if (!pmv)
+ return -1;
+
/* decode y, u and v components */
for (i=0; i < 3; i++) {
int linesize;
@@ -724,13 +729,12 @@ static int svq1_decode_frame(AVCodecContext *avctx,
//#ifdef DEBUG_SVQ1
av_log(s->avctx, AV_LOG_INFO, "Error in svq1_decode_block %i (keyframe)\n",result);
//#endif
- return result;
+ goto err;
}
}
current += 16*linesize;
}
} else {
- svq1_pmv pmv[width/8+3];
/* delta frame */
memset (pmv, 0, ((width / 8) + 3) * sizeof(svq1_pmv));
@@ -743,7 +747,7 @@ static int svq1_decode_frame(AVCodecContext *avctx,
#ifdef DEBUG_SVQ1
av_log(s->avctx, AV_LOG_INFO, "Error in svq1_decode_delta_block %i\n",result);
#endif
- return result;
+ goto err;
}
}
@@ -761,7 +765,10 @@ static int svq1_decode_frame(AVCodecContext *avctx,
MPV_frame_end(s);
*data_size=sizeof(AVFrame);
- return buf_size;
+ result = buf_size;
+err:
+ av_free(pmv);
+ return result;
}
static av_cold int svq1_decode_init(AVCodecContext *avctx)
--
1.7.1
More information about the ffmpeg-devel
mailing list