avcodec: Constify AVCodecs

[ffmpeg] / libavcodec / hnm4video.c

diff --git a/libavcodec/hnm4video.c b/libavcodec/hnm4video.c
index 173691a1ebea9b46320f9cdadd5503c7ab415d4d..0d3fa7d1e8a8d40b2eb061388aeadaaa93ef3535 100644 (file)
--- a/libavcodec/hnm4video.c
+++ b/libavcodec/hnm4video.c
@@ -387,15 +387,6 @@ static void hnm_update_palette(AVCodecContext *avctx, uint8_t *src,
     }
 }
 
-static void hnm_flip_buffers(Hnm4VideoContext *hnm)
-{
-    uint8_t *temp;
-
-    temp          = hnm->current;
-    hnm->current  = hnm->previous;
-    hnm->previous = temp;
-}
-
 static int hnm_decode_frame(AVCodecContext *avctx, void *data,
                             int *got_frame, AVPacket *avpkt)
 {
@@ -450,7 +441,7 @@ static int hnm_decode_frame(AVCodecContext *avctx, void *data,
         frame->key_frame = 0;
         memcpy(frame->data[1], hnm->palette, 256 * 4);
         *got_frame = 1;
-        hnm_flip_buffers(hnm);
+        FFSWAP(uint8_t *, hnm->current, hnm->previous);
     } else {
         av_log(avctx, AV_LOG_ERROR, "invalid chunk id: %d\n", chunk_id);
         return AVERROR_INVALIDDATA;
@@ -506,7 +497,7 @@ static av_cold int hnm_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec ff_hnm4_video_decoder = {
+const AVCodec ff_hnm4_video_decoder = {
     .name           = "hnm4video",
     .long_name      = NULL_IF_CONFIG_SMALL("HNM 4 video"),
     .type           = AVMEDIA_TYPE_VIDEO,