mpeg12: Add ff_ prefix to nonstatic symbols

Signed-off-by: Martin Storsjö <martin@martin.st>

libavcodec/mpeg12enc.c

@@ -331,7 +331,7 @@ void ff_mpeg1_encode_slice_header(MpegEncContext *s){
     put_bits(&s->pb, 1, 0); /* slice extra information */
 }
 
-void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
+void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
 {
     mpeg1_encode_sequence_header(s);
 
@@ -656,7 +656,7 @@ static av_always_inline void mpeg1_encode_mb_internal(MpegEncContext *s,
     }
 }
 
-void mpeg1_encode_mb(MpegEncContext *s, DCTELEM block[6][64], int motion_x, int motion_y)
+void ff_mpeg1_encode_mb(MpegEncContext *s, DCTELEM block[6][64], int motion_x, int motion_y)
 {
     if (s->chroma_format == CHROMA_420) mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 6);
     else                                mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 8);

libavcodec/mpegvideo.h

@@ -788,8 +788,8 @@ int ff_get_mb_score(MpegEncContext * s, int mx, int my, int src_index,
 extern const uint8_t ff_mpeg1_dc_scale_table[128];
 extern const uint8_t * const ff_mpeg2_dc_scale_table[4];
 
-void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
-void mpeg1_encode_mb(MpegEncContext *s,
+void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
+void ff_mpeg1_encode_mb(MpegEncContext *s,
                         DCTELEM block[6][64],
                         int motion_x, int motion_y);
 void ff_mpeg1_encode_init(MpegEncContext *s);

libavcodec/mpegvideo_enc.c

@@ -1994,7 +1994,7 @@ static av_always_inline void encode_mb_internal(MpegEncContext *s,
     case CODEC_ID_MPEG1VIDEO:
     case CODEC_ID_MPEG2VIDEO:
         if (CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER)
-            mpeg1_encode_mb(s, s->block, motion_x, motion_y);
+            ff_mpeg1_encode_mb(s, s->block, motion_x, motion_y);
         break;
     case CODEC_ID_MPEG4:
         if (CONFIG_MPEG4_ENCODER)
@@ -3204,7 +3204,7 @@ static int encode_picture(MpegEncContext *s, int picture_number)
         break;
     case FMT_MPEG1:
         if (CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER)
-            mpeg1_encode_picture_header(s, picture_number);
+            ff_mpeg1_encode_picture_header(s, picture_number);
         break;
     case FMT_H264:
         break;