avcodec: Constify AVCodecs

[ffmpeg] / libavcodec / fmvc.c

diff --git a/libavcodec/fmvc.c b/libavcodec/fmvc.c
index a06b90c6fe24f8e8f83d0d8d36d1905cdfcb0481..aab46da9cff75a0f7c54f26518ee4905119555e1 100644 (file)
--- a/libavcodec/fmvc.c
+++ b/libavcodec/fmvc.c
@@ -402,6 +402,9 @@ static int decode_frame(AVCodecContext *avctx, void *data,
     AVFrame *frame = data;
     int ret, y, x;
 
+    if (avpkt->size < 8)
+        return AVERROR_INVALIDDATA;
+
     if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
         return ret;
 
@@ -437,6 +440,8 @@ static int decode_frame(AVCodecContext *avctx, void *data,
             memcpy(dst, src, avctx->width * s->bpp);
             dst -= frame->linesize[0];
             src += s->stride * 4;
+            if (bytestream2_tell_p(pb) < y*s->stride * 4)
+                break;
         }
     } else {
         unsigned block, nb_blocks;
@@ -530,7 +535,7 @@ static av_cold int decode_init(AVCodecContext *avctx)
 
     switch (avctx->bits_per_coded_sample) {
     case 16:
-        avctx->pix_fmt = AV_PIX_FMT_RGB555;
+        avctx->pix_fmt = AV_PIX_FMT_RGB555LE;
         break;
     case 24:
         avctx->pix_fmt = AV_PIX_FMT_BGR24;
@@ -621,7 +626,7 @@ static av_cold int decode_close(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec ff_fmvc_decoder = {
+const AVCodec ff_fmvc_decoder = {
     .name             = "fmvc",
     .long_name        = NULL_IF_CONFIG_SMALL("FM Screen Capture Codec"),
     .type             = AVMEDIA_TYPE_VIDEO,