avcodec: Constify AVCodecs

[ffmpeg] / libavcodec / kmvc.c

diff --git a/libavcodec/kmvc.c b/libavcodec/kmvc.c
index ffe6a142e9721df54f3fe8ab2e52e7bd4749bbf0..5d3dd4ce63790dd3ff950d11aa684cf4ac65e3e6 100644 (file)
--- a/libavcodec/kmvc.c
+++ b/libavcodec/kmvc.c
@@ -29,6 +29,7 @@
 
 #include "avcodec.h"
 #include "bytestream.h"
+#include "decode.h"
 #include "internal.h"
 #include "libavutil/common.h"
 
@@ -43,12 +44,12 @@
 typedef struct KmvcContext {
     AVCodecContext *avctx;
 
+    GetByteContext g;
+    uint8_t *cur, *prev;
     int setpal;
     int palsize;
     uint32_t pal[MAX_PALSIZE];
-    uint8_t *cur, *prev;
     uint8_t frm0[320 * 200], frm1[320 * 200];
-    GetByteContext g;
 } KmvcContext;
 
 typedef struct BitBuf {
@@ -268,14 +269,14 @@ static int decode_frame(AVCodecContext * avctx, void *data, int *got_frame,
     int i, ret;
     int header;
     int blocksize;
-    int pal_size;
-    const uint8_t *pal = av_packet_get_side_data(avpkt, AV_PKT_DATA_PALETTE, &pal_size);
 
     bytestream2_init(&ctx->g, avpkt->data, avpkt->size);
 
     if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
         return ret;
 
+    frame->palette_has_changed = ff_copy_palette(ctx->pal, avpkt, avctx);
+
     header = bytestream2_get_byte(&ctx->g);
 
     /* blocksize 127 is really palette change event */
@@ -304,13 +305,6 @@ static int decode_frame(AVCodecContext * avctx, void *data, int *got_frame,
         }
     }
 
-    if (pal && pal_size == AVPALETTE_SIZE) {
-        frame->palette_has_changed = 1;
-        memcpy(ctx->pal, pal, AVPALETTE_SIZE);
-    } else if (pal) {
-        av_log(avctx, AV_LOG_ERROR, "Palette size %d is wrong\n", pal_size);
-    }
-
     if (ctx->setpal) {
         ctx->setpal = 0;
         frame->palette_has_changed = 1;
@@ -351,13 +345,7 @@ static int decode_frame(AVCodecContext * avctx, void *data, int *got_frame,
     }
 
     /* flip buffers */
-    if (ctx->cur == ctx->frm0) {
-        ctx->cur = ctx->frm1;
-        ctx->prev = ctx->frm0;
-    } else {
-        ctx->cur = ctx->frm0;
-        ctx->prev = ctx->frm1;
-    }
+    FFSWAP(uint8_t *, ctx->cur, ctx->prev);
 
     *got_frame = 1;
 
@@ -416,7 +404,7 @@ static av_cold int decode_init(AVCodecContext * avctx)
     return 0;
 }
 
-AVCodec ff_kmvc_decoder = {
+const AVCodec ff_kmvc_decoder = {
     .name           = "kmvc",
     .long_name      = NULL_IF_CONFIG_SMALL("Karl Morton's video codec"),
     .type           = AVMEDIA_TYPE_VIDEO,