avcodec/sbc: Fix non static function prefix

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 9f1b99e7d0)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavcodec/sbc.c

@@ -52,7 +52,7 @@ static const int sbc_offset8[4][8] = {
 /*
  * Calculates the CRC-8 of the first len bits in data
  */
-uint8_t sbc_crc8(const AVCRC *ctx, const uint8_t *data, size_t len)
+uint8_t ff_sbc_crc8(const AVCRC *ctx, const uint8_t *data, size_t len)
 {
     size_t byte_length = len >> 3;
     int bit_length = len & 7;

libavcodec/sbc.h

@@ -112,7 +112,7 @@ struct sbc_frame {
     const AVCRC *crc_ctx;
 };
 
-uint8_t sbc_crc8(const AVCRC *crc_ctx, const uint8_t *data, size_t len);
+uint8_t ff_sbc_crc8(const AVCRC *crc_ctx, const uint8_t *data, size_t len);
 void ff_sbc_calculate_bits(const struct sbc_frame *frame, int (*bits)[8]);
 
 #endif /* AVCODEC_SBC_H */

libavcodec/sbcdec.c

@@ -147,7 +147,7 @@ static int sbc_unpack_frame(const uint8_t *data, struct sbc_frame *frame,
         }
     }
 
-    if (data[3] != sbc_crc8(frame->crc_ctx, crc_header, crc_pos))
+    if (data[3] != ff_sbc_crc8(frame->crc_ctx, crc_header, crc_pos))
         return -3;
 
     ff_sbc_calculate_bits(frame, bits);

libavcodec/sbcenc.c

@@ -156,7 +156,7 @@ static size_t sbc_pack_frame(AVPacket *avpkt, struct sbc_frame *frame,
     if (crc_pos % 8)
         crc_header[crc_pos >> 3] <<= 8 - (crc_pos % 8);
 
-    avpkt->data[3] = sbc_crc8(frame->crc_ctx, crc_header, crc_pos);
+    avpkt->data[3] = ff_sbc_crc8(frame->crc_ctx, crc_header, crc_pos);
 
     ff_sbc_calculate_bits(frame, bits);