@@ -597,7 +597,7 @@ static int rv10_decode_end(AVCodecContext *avctx)

 }

 static int rv10_decode_packet(AVCodecContext *avctx,

-                             uint8_t *buf, int buf_size)

+                             const uint8_t *buf, int buf_size)

 {

     MpegEncContext *s = avctx->priv_data;

     int mb_count, mb_pos, left, start_mb_x;

@@ -711,7 +711,7 @@ static int rv10_decode_packet(AVCodecContext *avctx,

     return buf_size;

 }

-static int get_slice_offset(AVCodecContext *avctx, uint8_t *buf, int n)

+static int get_slice_offset(AVCodecContext *avctx, const uint8_t *buf, int n)

 {

     if(avctx->slice_count) return avctx->slice_offset[n];

     else                   return AV_RL32(buf + n*8);

@@ -719,13 +719,13 @@ static int get_slice_offset(AVCodecContext *avctx, uint8_t *buf, int n)

 static int rv10_decode_frame(AVCodecContext *avctx,

                              void *data, int *data_size,

-                             uint8_t *buf, int buf_size)

+                             const uint8_t *buf, int buf_size)

 {

     MpegEncContext *s = avctx->priv_data;

     int i;

     AVFrame *pict = data;

     int slice_count;

-    uint8_t *slices_hdr = NULL;

+    const uint8_t *slices_hdr = NULL;

 #ifdef DEBUG

     av_log(avctx, AV_LOG_DEBUG, "*****frame %d size=%d\n", avctx->frame_number, buf_size);