avcodec: Constify AVCodecs

[ffmpeg] / libavcodec / msvideo1.c

diff --git a/libavcodec/msvideo1.c b/libavcodec/msvideo1.c
index 29700f54b66e9829729f3a6630298dcd7f44e32a..99965b04a2cc02377ce97c566b334bdd20d801ae 100644 (file)
--- a/libavcodec/msvideo1.c
+++ b/libavcodec/msvideo1.c
@@ -33,6 +33,7 @@
 #include "libavutil/internal.h"
 #include "libavutil/intreadwrite.h"
 #include "avcodec.h"
+#include "decode.h"
 #include "internal.h"
 
 #define PALETTE_COUNT 256
@@ -62,6 +63,9 @@ static av_cold int msvideo1_decode_init(AVCodecContext *avctx)
 
     s->avctx = avctx;
 
+    if (avctx->width < 4 || avctx->height < 4)
+        return AVERROR_INVALIDDATA;
+
     /* figure out the colorspace based on the presence of a palette */
     if (s->avctx->bits_per_coded_sample == 8) {
         s->mode_8bit = 1;
@@ -307,19 +311,11 @@ static int msvideo1_decode_frame(AVCodecContext *avctx,
         return AVERROR_INVALIDDATA;
     }
 
-    if ((ret = ff_reget_buffer(avctx, s->frame)) < 0)
+    if ((ret = ff_reget_buffer(avctx, s->frame, 0)) < 0)
         return ret;
 
     if (s->mode_8bit) {
-        int size;
-        const uint8_t *pal = av_packet_get_side_data(avpkt, AV_PKT_DATA_PALETTE, &size);
-
-        if (pal && size == AVPALETTE_SIZE) {
-            memcpy(s->pal, pal, AVPALETTE_SIZE);
-            s->frame->palette_has_changed = 1;
-        } else if (pal) {
-            av_log(avctx, AV_LOG_ERROR, "Palette size %d is wrong\n", size);
-        }
+        s->frame->palette_has_changed = ff_copy_palette(s->pal, avpkt, avctx);
     }
 
     if (s->mode_8bit)
@@ -345,7 +341,7 @@ static av_cold int msvideo1_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec ff_msvideo1_decoder = {
+const AVCodec ff_msvideo1_decoder = {
     .name           = "msvideo1",
     .long_name      = NULL_IF_CONFIG_SMALL("Microsoft Video 1"),
     .type           = AVMEDIA_TYPE_VIDEO,