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avio: make get_checksum() internal.

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This commit is contained in:
Anton Khirnov 2011-03-17 13:04:38 +01:00
parent d09cc22d9c
commit b64030f26d
6 changed files with 18 additions and 14 deletions
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3
libavformat/avio.h
View File

@ -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

1
libavformat/avio_internal.h
View File

@ -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);

6
libavformat/aviobuf.c
View File

@ -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;

12
libavformat/nutdec.c
View File

@ -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;
}

8
libavformat/nutenc.c
View File

@ -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;

2
libavformat/oggenc.c
View File

@ -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);