avformat/vapoursynth: properly initialize err variable in read_header_vs()

[ffmpeg] / libavcodec / hevcdec.c

diff --git a/libavcodec/hevcdec.c b/libavcodec/hevcdec.c
index c8877626d2e4356bb3c3c6559514893a0cebe356..10bf2563c060b8c80da4124ea27b86b5d5979c78 100644 (file)
--- a/libavcodec/hevcdec.c
+++ b/libavcodec/hevcdec.c
@@ -2919,7 +2919,7 @@ static int decode_nal_unit(HEVCContext *s, const H2645NAL *nal)
         if (
             (s->avctx->skip_frame >= AVDISCARD_BIDIR && s->sh.slice_type == HEVC_SLICE_B) ||
             (s->avctx->skip_frame >= AVDISCARD_NONINTRA && s->sh.slice_type != HEVC_SLICE_I) ||
-            (s->avctx->skip_frame >= AVDISCARD_NONKEY && !IS_IDR(s))) {
+            (s->avctx->skip_frame >= AVDISCARD_NONKEY && !IS_IRAP(s))) {
             break;
         }
 
@@ -2942,6 +2942,7 @@ static int decode_nal_unit(HEVCContext *s, const H2645NAL *nal)
                     s->max_ra = INT_MIN;
             }
 
+            s->overlap ++;
             ret = hevc_frame_start(s);
             if (ret < 0)
                 return ret;
@@ -3020,6 +3021,7 @@ static int decode_nal_units(HEVCContext *s, const uint8_t *buf, int length)
     s->ref = NULL;
     s->last_eos = s->eos;
     s->eos = 0;
+    s->overlap = 0;
 
     /* split the input packet into NAL units, so we know the upper bound on the
      * number of slices in the frame */
@@ -3054,6 +3056,8 @@ static int decode_nal_units(HEVCContext *s, const uint8_t *buf, int length)
             continue;
 
         ret = decode_nal_unit(s, nal);
+        if (ret >= 0 && s->overlap > 2)
+            ret = AVERROR_INVALIDDATA;
         if (ret < 0) {
             av_log(s->avctx, AV_LOG_WARNING,
                    "Error parsing NAL unit #%d.\n", i);
@@ -3358,6 +3362,7 @@ fail:
     return AVERROR(ENOMEM);
 }
 
+#if HAVE_THREADS
 static int hevc_update_thread_context(AVCodecContext *dst,
                                       const AVCodecContext *src)
 {
@@ -3439,6 +3444,7 @@ static int hevc_update_thread_context(AVCodecContext *dst,
 
     return 0;
 }
+#endif
 
 static av_cold int hevc_decode_init(AVCodecContext *avctx)
 {
@@ -3478,6 +3484,7 @@ static av_cold int hevc_decode_init(AVCodecContext *avctx)
     return 0;
 }
 
+#if HAVE_THREADS
 static av_cold int hevc_init_thread_copy(AVCodecContext *avctx)
 {
     HEVCContext *s = avctx->priv_data;
@@ -3491,6 +3498,7 @@ static av_cold int hevc_init_thread_copy(AVCodecContext *avctx)
 
     return 0;
 }
+#endif
 
 static void hevc_decode_flush(AVCodecContext *avctx)
 {
@@ -3529,8 +3537,8 @@ AVCodec ff_hevc_decoder = {
     .close                 = hevc_decode_free,
     .decode                = hevc_decode_frame,
     .flush                 = hevc_decode_flush,
-    .update_thread_context = hevc_update_thread_context,
-    .init_thread_copy      = hevc_init_thread_copy,
+    .update_thread_context = ONLY_IF_THREADS_ENABLED(hevc_update_thread_context),
+    .init_thread_copy      = ONLY_IF_THREADS_ENABLED(hevc_init_thread_copy),
     .capabilities          = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY |
                              AV_CODEC_CAP_SLICE_THREADS | AV_CODEC_CAP_FRAME_THREADS,
     .caps_internal         = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_EXPORTS_CROPPING,