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Code Issues Releases Activity

fix header_checksum

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Originally committed as revision 10036 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2007-08-09 21:20:17 +00:00
parent bd533e6cbc
commit f0a9978c92
1 changed files with 6 additions and 8 deletions
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14
libavformat/nutenc.c
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@ -191,13 +191,14 @@ static inline void put_s_trace(ByteIOContext *bc, int64_t v, char *file, char *f
#endif
//FIXME remove calculate_checksum
static void put_packet(NUTContext *nut, ByteIOContext *bc, ByteIOContext *dyn_bc, int calculate_checksum){
static void put_packet(NUTContext *nut, ByteIOContext *bc, ByteIOContext *dyn_bc, int calculate_checksum, uint64_t startcode){
uint8_t *dyn_buf=NULL;
int dyn_size= url_close_dyn_buf(dyn_bc, &dyn_buf);
int forw_ptr= dyn_size + 4*calculate_checksum;
if(forw_ptr > 4096)
init_checksum(bc, av_crc04C11DB7_update, 0); //FIXME this is supposed to include the start code
init_checksum(bc, av_crc04C11DB7_update, 0);
put_be64(bc, startcode);
put_v(bc, forw_ptr);
if(forw_ptr > 4096)
put_le32(bc, get_checksum(bc));
@ -315,18 +316,16 @@ static void write_headers(NUTContext *nut, ByteIOContext *bc){
ByteIOContext dyn_bc;
int i;
put_be64(bc, MAIN_STARTCODE);
url_open_dyn_buf(&dyn_bc);
write_mainheader(nut, &dyn_bc);
put_packet(nut, bc, &dyn_bc, 1);
put_packet(nut, bc, &dyn_bc, 1, MAIN_STARTCODE);
for (i=0; i < nut->avf->nb_streams; i++){
AVCodecContext *codec = nut->avf->streams[i]->codec;
put_be64(bc, STREAM_STARTCODE);
url_open_dyn_buf(&dyn_bc);
write_streamheader(nut, &dyn_bc, codec, i);
put_packet(nut, bc, &dyn_bc, 1);
put_packet(nut, bc, &dyn_bc, 1, STREAM_STARTCODE);
}
}
@ -416,11 +415,10 @@ static int write_packet(AVFormatContext *s, AVPacket *pkt){
ff_nut_reset_ts(nut, *nus->time_base, pkt->dts);
nut->last_syncpoint_pos= url_ftell(bc);
put_be64(bc, SYNCPOINT_STARTCODE);
url_open_dyn_buf(&dyn_bc);
put_t(nut, nus, &dyn_bc, pkt->dts);
put_v(&dyn_bc, 0); //FIXME back_ptr_div16
put_packet(nut, bc, &dyn_bc, 1);
put_packet(nut, bc, &dyn_bc, 1, SYNCPOINT_STARTCODE);
}
assert(nus->last_pts != AV_NOPTS_VALUE);