[FFmpeg-devel] [PATCH 3/3] avcodec/h264dec: don't ignore ff_h264_queue_decode_slice() return values

[James Almer]

Signed-off-by: James Almer <jamrial at gmail.com>
---
 libavcodec/h264dec.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/libavcodec/h264dec.c b/libavcodec/h264dec.c
index 837c3b7538..85a57fc124 100644
--- a/libavcodec/h264dec.c
+++ b/libavcodec/h264dec.c
@@ -637,7 +637,7 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size)
 
     for (i = 0; i < h->pkt.nb_nals; i++) {
         H2645NAL *nal = &h->pkt.nals[i];
-        int max_slice_ctx, err;
+        int max_slice_ctx;
 
         if (avctx->skip_frame >= AVDISCARD_NONREF &&
             nal->ref_idc == 0 && nal->type != H264_NAL_SEI)
@@ -647,7 +647,6 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size)
         h->nal_ref_idc   = nal->ref_idc;
         h->nal_unit_type = nal->type;
 
-        err = 0;
         switch (nal->type) {
         case H264_NAL_IDR_SLICE:
             if ((nal->data[1] & 0xFC) == 0x98) {
@@ -664,9 +663,13 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size)
         case H264_NAL_SLICE:
             h->has_slice = 1;
 
-            if ((err = ff_h264_queue_decode_slice(h, nal))) {
+            ret = ff_h264_queue_decode_slice(h, nal);
+            if (ret < 0) {
                 H264SliceContext *sl = h->slice_ctx + h->nb_slice_ctx_queued;
                 sl->ref_count[0] = sl->ref_count[1] = 0;
+                av_log(h->avctx, AV_LOG_ERROR, "decode_slice_header error\n");
+                if (h->avctx->err_recognition & AV_EF_EXPLODE)
+                    goto end;
                 break;
             }
 
@@ -751,10 +754,6 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size)
             av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n",
                    nal->type, nal->size_bits);
         }
-
-        if (err < 0) {
-            av_log(h->avctx, AV_LOG_ERROR, "decode_slice_header error\n");
-        }
     }
 
     ret = ff_h264_execute_decode_slices(h);
-- 
2.21.0