[FFmpeg-devel] [PATCH] CrystalHD: Fix usage of h264 parser.

[Philip Langdale]

I was using the wrong value to track the position of the parser in the
stream. For an error-free stream, the size of the frame and number of
bytes consumed will be the same, but in an error situation they can
diverge.

Signed-off-by: Philip Langdale <philipl at overt.org>
---
 libavcodec/crystalhd.c |   14 +++++++++-----
 1 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/libavcodec/crystalhd.c b/libavcodec/crystalhd.c
index b6e67cb..dc232fa 100644
--- a/libavcodec/crystalhd.c
+++ b/libavcodec/crystalhd.c
@@ -796,13 +796,17 @@ static int decode(AVCodecContext *avctx, void *data, int *data_size, AVPacket *a
 
         if (priv->parser) {
             uint8_t *pout;
-            int psize = len;
+            int psize;
+            int consumed = 0;
             H264Context *h = priv->parser->priv_data;
 
-            while (psize)
-                ret = av_parser_parse2(priv->parser, avctx, &pout, &psize,
-                                       avpkt->data, len, avctx->pkt->pts,
-                                       avctx->pkt->dts, len - psize);
+            while (consumed < len) {
+                int offset;
+                offset = av_parser_parse2(priv->parser, avctx, &pout, &psize,
+                                          avpkt->data, len, avctx->pkt->pts,
+                                          avctx->pkt->dts, consumed);
+                consumed += offset;
+            }
             av_log(avctx, AV_LOG_VERBOSE,
                    "CrystalHD: parser picture type %d\n",
                    h->s.picture_structure);
-- 
1.7.4.1