some const

Originally committed as revision 11758 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/dv.c

@@ -363,7 +363,7 @@ static inline void bit_copy(PutBitContext *pb, GetBitContext *gb)
 
 /* mb_x and mb_y are in units of 8 pixels */
 static inline void dv_decode_video_segment(DVVideoContext *s,
-                                           uint8_t *buf_ptr1,
+                                           const uint8_t *buf_ptr1,
                                            const uint16_t *mb_pos_ptr)
 {
     int quant, dc, dct_mode, class1, j;
@@ -372,7 +372,7 @@ static inline void dv_decode_video_segment(DVVideoContext *s,
     int c_offset;
     uint8_t *y_ptr;
     void (*idct_put)(uint8_t *dest, int line_size, DCTELEM *block);
-    uint8_t *buf_ptr;
+    const uint8_t *buf_ptr;
     PutBitContext pb, vs_pb;
     GetBitContext gb;
     BlockInfo mb_data[5 * 6], *mb, *mb1;

libavcodec/dvdata.h

@@ -2661,7 +2661,7 @@ enum dv_pack_type {
 /* largest possible DV frame, in bytes (PAL 50Mbps) */
 #define DV_MAX_FRAME_SIZE 288000
 
-static inline const DVprofile* dv_frame_profile(uint8_t* frame)
+static inline const DVprofile* dv_frame_profile(const uint8_t* frame)
 {
     if ((frame[3] & 0x80) == 0) {      /* DSF flag */
         /* it's an NTSC format */