avio: make get_checksum() internal.

libavformat/avio.h

@@ -455,6 +455,7 @@ attribute_deprecated int udp_get_local_port(URLContext *h);
 attribute_deprecated void init_checksum(AVIOContext *s,
                    unsigned long (*update_checksum)(unsigned long c, const uint8_t *p, unsigned int len),
                    unsigned long checksum);
+attribute_deprecated unsigned long get_checksum(AVIOContext *s);
 #endif
 
 AVIOContext *avio_alloc_context(
@@ -675,8 +676,6 @@ int url_open_dyn_packet_buf(AVIOContext **s, int max_packet_size);
  */
 int url_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer);
 
-unsigned long get_checksum(AVIOContext *s);
-
 #if FF_API_UDP_GET_FILE
 int udp_get_file_handle(URLContext *h);
 #endif

libavformat/avio_internal.h

@@ -77,6 +77,7 @@ int ff_udp_get_local_port(URLContext *h);
 void ffio_init_checksum(AVIOContext *s,
                         unsigned long (*update_checksum)(unsigned long c, const uint8_t *p, unsigned int len),
                         unsigned long checksum);
+unsigned long ffio_get_checksum(AVIOContext *s);
 unsigned long ff_crc04C11DB7_update(unsigned long checksum, const uint8_t *buf,
                                     unsigned int len);
 

libavformat/aviobuf.c

@@ -412,6 +412,10 @@ void init_checksum(AVIOContext *s,
 {
     ffio_init_checksum(s, update_checksum, checksum);
 }
+unsigned long get_checksum(AVIOContext *s)
+{
+    return ffio_get_checksum(s);
+}
 #endif
 
 int avio_put_str(AVIOContext *s, const char *str)
@@ -554,7 +558,7 @@ unsigned long ff_crc04C11DB7_update(unsigned long checksum, const uint8_t *buf,
     return av_crc(av_crc_get_table(AV_CRC_32_IEEE), checksum, buf, len);
 }
 
-unsigned long get_checksum(AVIOContext *s)
+unsigned long ffio_get_checksum(AVIOContext *s)
 {
     s->checksum= s->update_checksum(s->checksum, s->checksum_ptr, s->buf_ptr - s->checksum_ptr);
     s->update_checksum= NULL;

libavformat/nutdec.c

@@ -108,7 +108,7 @@ static int get_packetheader(NUTContext *nut, AVIOContext *bc, int calculate_chec
     size= ffio_read_varlen(bc);
     if(size > 4096)
         avio_rb32(bc);
-    if(get_checksum(bc) && size > 4096)
+    if(ffio_get_checksum(bc) && size > 4096)
         return -1;
 
     ffio_init_checksum(bc, calculate_checksum ? ff_crc04C11DB7_update : NULL, 0);
@@ -285,7 +285,7 @@ static int decode_main_header(NUTContext *nut){
         assert(nut->header_len[0]==0);
     }
 
-    if(skip_reserved(bc, end) || get_checksum(bc)){
+    if(skip_reserved(bc, end) || ffio_get_checksum(bc)){
         av_log(s, AV_LOG_ERROR, "main header checksum mismatch\n");
         return AVERROR_INVALIDDATA;
     }
@@ -374,7 +374,7 @@ static int decode_stream_header(NUTContext *nut){
         ffio_read_varlen(bc); // samplerate_den
         GET_V(st->codec->channels, tmp > 0)
     }
-    if(skip_reserved(bc, end) || get_checksum(bc)){
+    if(skip_reserved(bc, end) || ffio_get_checksum(bc)){
         av_log(s, AV_LOG_ERROR, "stream header %d checksum mismatch\n", stream_id);
         return -1;
     }
@@ -469,7 +469,7 @@ static int decode_info_header(NUTContext *nut){
         }
     }
 
-    if(skip_reserved(bc, end) || get_checksum(bc)){
+    if(skip_reserved(bc, end) || ffio_get_checksum(bc)){
         av_log(s, AV_LOG_ERROR, "info header checksum mismatch\n");
         return -1;
     }
@@ -493,7 +493,7 @@ static int decode_syncpoint(NUTContext *nut, int64_t *ts, int64_t *back_ptr){
 
     ff_nut_reset_ts(nut, nut->time_base[tmp % nut->time_base_count], tmp / nut->time_base_count);
 
-    if(skip_reserved(bc, end) || get_checksum(bc)){
+    if(skip_reserved(bc, end) || ffio_get_checksum(bc)){
         av_log(s, AV_LOG_ERROR, "sync point checksum mismatch\n");
         return -1;
     }
@@ -590,7 +590,7 @@ static int find_and_decode_index(NUTContext *nut){
         }
     }
 
-    if(skip_reserved(bc, end) || get_checksum(bc)){
+    if(skip_reserved(bc, end) || ffio_get_checksum(bc)){
         av_log(s, AV_LOG_ERROR, "index checksum mismatch\n");
         goto fail;
     }

libavformat/nutenc.c

@@ -289,13 +289,13 @@ static void put_packet(NUTContext *nut, AVIOContext *bc, AVIOContext *dyn_bc, in
     avio_wb64(bc, startcode);
     ff_put_v(bc, forw_ptr);
     if(forw_ptr > 4096)
-        avio_wl32(bc, get_checksum(bc));
+        avio_wl32(bc, ffio_get_checksum(bc));
 
     if(calculate_checksum)
         ffio_init_checksum(bc, ff_crc04C11DB7_update, 0);
     avio_write(bc, dyn_buf, dyn_size);
     if(calculate_checksum)
-        avio_wl32(bc, get_checksum(bc));
+        avio_wl32(bc, ffio_get_checksum(bc));
 
     av_free(dyn_buf);
 }
@@ -818,8 +818,8 @@ static int write_packet(AVFormatContext *s, AVPacket *pkt){
     if(flags & FLAG_SIZE_MSB)   ff_put_v(bc, pkt->size / fc->size_mul);
     if(flags & FLAG_HEADER_IDX) ff_put_v(bc, header_idx= best_header_idx);
 
-    if(flags & FLAG_CHECKSUM)   avio_wl32(bc, get_checksum(bc));
-    else                        get_checksum(bc);
+    if(flags & FLAG_CHECKSUM)   avio_wl32(bc, ffio_get_checksum(bc));
+    else                        ffio_get_checksum(bc);
 
     avio_write(bc, pkt->data + nut->header_len[header_idx], pkt->size - nut->header_len[header_idx]);
     nus->last_flags= flags;

libavformat/oggenc.c

@@ -68,7 +68,7 @@ typedef struct {
 static void ogg_update_checksum(AVFormatContext *s, AVIOContext *pb, int64_t crc_offset)
 {
     int64_t pos = avio_tell(pb);
-    uint32_t checksum = get_checksum(pb);
+    uint32_t checksum = ffio_get_checksum(pb);
     avio_seek(pb, crc_offset, SEEK_SET);
     avio_wb32(pb, checksum);
     avio_seek(pb, pos, SEEK_SET);