@ -33,8 +33,10 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
# include <fcntl.h>
# include <stdlib.h>
# include <string.h>
# include <math.h>
# include <algorithm>
# include <sstream>
using namespace std ;
# include <srs_kernel_error.hpp>
@ -166,6 +168,7 @@ SrsHlsMuxer::SrsHlsMuxer(ISrsHlsHandler* h)
req = NULL ;
handler = h ;
hls_fragment = hls_window = 0 ;
target_duration = 0 ;
_sequence_no = 0 ;
current = NULL ;
acodec = SrsCodecAudioReserved1 ;
@ -201,6 +204,7 @@ int SrsHlsMuxer::update_config(SrsRequest* r, string path, int fragment, int win
hls_path = path ;
hls_fragment = fragment ;
hls_window = window ;
target_duration = ( int ) ( fragment * _srs_config - > get_hls_td_ratio ( r - > vhost ) ) ;
std : : string storage = _srs_config - > get_hls_storage ( r - > vhost ) ;
if ( storage = = " ram " ) {
@ -503,35 +507,21 @@ int SrsHlsMuxer::_refresh_m3u8(string m3u8_file)
}
srs_info ( " open m3u8 file %s success. " , m3u8_file . c_str ( ) ) ;
// #EXTM3U\n#EXT-X-VERSION:3\n
char header [ ] = {
// #EXTM3U\n
0x23 , 0x45 , 0x58 , 0x54 , 0x4d , 0x33 , 0x55 , SRS_CONSTS_LF ,
// #EXT-X-VERSION:3\n
0x23 , 0x45 , 0x58 , 0x54 , 0x2d , 0x58 , 0x2d , 0x56 , 0x45 , 0x52 ,
0x53 , 0x49 , 0x4f , 0x4e , 0x3a , 0x33 , SRS_CONSTS_LF ,
// #EXT-X-ALLOW-CACHE:NO\n
0x23 , 0x45 , 0x58 , 0x54 , 0x2d , 0x58 , 0x2d , 0x41 , 0x4c , 0x4c ,
0x4f , 0x57 , 0x2d , 0x43 , 0x41 , 0x43 , 0x48 , 0x45 , 0x3a , 0x4e , 0x4f , SRS_CONSTS_LF
} ;
if ( ( ret = writer . write ( header , sizeof ( header ) , NULL ) ) ! = ERROR_SUCCESS ) {
srs_error ( " write m3u8 header failed. ret=%d " , ret ) ;
return ret ;
}
// #EXTM3U\n
// #EXT-X-VERSION:3\n
// #EXT-X-ALLOW-CACHE:NO\n
std : : stringstream ss ;
ss < < " #EXTM3U " < < SRS_CONSTS_LF
< < " #EXT-X-VERSION:3 " < < SRS_CONSTS_LF
< < " #EXT-X-ALLOW-CACHE:NO " < < SRS_CONSTS_LF ;
srs_verbose ( " write m3u8 header success. " ) ;
// #EXT-X-MEDIA-SEQUENCE:4294967295\n
SrsHlsSegment * first = * segments . begin ( ) ;
char sequence [ 34 ] = { } ;
int len = snprintf ( sequence , sizeof ( sequence ) , " #EXT-X-MEDIA-SEQUENCE:%d%c " , first - > sequence_no , SRS_CONSTS_LF ) ;
if ( ( ret = writer . write ( sequence , len , NULL ) ) ! = ERROR_SUCCESS ) {
srs_error ( " write m3u8 sequence failed. ret=%d " , ret ) ;
return ret ;
}
ss < < " #EXT-X-MEDIA-SEQUENCE: " < < first - > sequence_no < < SRS_CONSTS_LF ;
srs_verbose ( " write m3u8 sequence success. " ) ;
// #EXT-X-TARGETDURATION:4294967295\n
int target_duration = 0 ;
/**
* @ see hls - m3u8 - draft - pantos - http - live - streaming - 12. pdf , page 25
* The Media Playlist file MUST contain an EXT - X - TARGETDURATION tag .
@ -540,20 +530,13 @@ int SrsHlsMuxer::_refresh_m3u8(string m3u8_file)
* rounded to the nearest integer . Its value MUST NOT change . A
* typical target duration is 10 seconds .
*/
// TODO: FIXME: finger it out whether it should not changed.
// @see https://github.com/winlinvip/simple-rtmp-server/issues/304#issuecomment-74000081
std : : vector < SrsHlsSegment * > : : iterator it ;
for ( it = segments . begin ( ) ; it ! = segments . end ( ) ; + + it ) {
SrsHlsSegment * segment = * it ;
target_duration = srs_max ( target_duration , ( int ) segment - > duration ) ;
}
// TODO: maybe need to take an around value
target_duration + = 1 ;
char duration [ 34 ] ; // 23+10+1
len = snprintf ( duration , sizeof ( duration ) , " #EXT-X-TARGETDURATION:%d%c " , target_duration , SRS_CONSTS_LF ) ;
if ( ( ret = writer . write ( duration , len , NULL ) ) ! = ERROR_SUCCESS ) {
srs_error ( " write m3u8 duration failed. ret=%d " , ret ) ;
return ret ;
target_duration = srs_max ( target_duration , ( int ) ceil ( segment - > duration ) ) ;
}
ss < < " #EXT-X-TARGETDURATION: " < < target_duration < < SRS_CONSTS_LF ;
srs_verbose ( " write m3u8 duration success. " ) ;
// write all segments
@ -562,33 +545,27 @@ int SrsHlsMuxer::_refresh_m3u8(string m3u8_file)
if ( segment - > is_sequence_header ) {
// #EXT-X-DISCONTINUITY\n
char ext_discon [ 22 ] ; // 21+1
len = snprintf ( ext_discon , sizeof ( ext_discon ) , " #EXT-X-DISCONTINUITY%c " , SRS_CONSTS_LF ) ;
if ( ( ret = writer . write ( ext_discon , len , NULL ) ) ! = ERROR_SUCCESS ) {
srs_error ( " write m3u8 segment discontinuity failed. ret=%d " , ret ) ;
return ret ;
}
ss < < " #EXT-X-DISCONTINUITY " < < SRS_CONSTS_LF ;
srs_verbose ( " write m3u8 segment discontinuity success. " ) ;
}
// "#EXTINF:4294967295.208,\n"
char ext_info [ 25 ] ; // 14+10+1
len = snprintf ( ext_info , sizeof ( ext_info ) , " #EXTINF:%.3f,%c " , segment - > duration , SRS_CONSTS_LF ) ;
if ( ( ret = writer . write ( ext_info , len , NULL ) ) ! = ERROR_SUCCESS ) {
srs_error ( " write m3u8 segment info failed. ret=%d " , ret ) ;
return ret ;
}
ss . precision ( 3 ) ;
ss . setf ( std : : ios : : fixed , std : : ios : : floatfield ) ;
ss < < " #EXTINF: " < < segment - > duration < < " , " < < SRS_CONSTS_LF ;
srs_verbose ( " write m3u8 segment info success. " ) ;
// {file name}\n
std : : string filename = segment - > uri ;
filename + = SRS_CONSTS_LF ;
if ( ( ret = writer . write ( ( char * ) filename . c_str ( ) , ( int ) filename . length ( ) , NULL ) ) ! = ERROR_SUCCESS ) {
srs_error ( " write m3u8 segment uri failed. ret=%d " , ret ) ;
return ret ;
}
ss < < segment - > uri < < SRS_CONSTS_LF ;
srs_verbose ( " write m3u8 segment uri success. " ) ;
}
// write m3u8 to writer.
std : : string m3u8 = ss . str ( ) ;
if ( ( ret = writer . write ( ( char * ) m3u8 . c_str ( ) , ( int ) m3u8 . length ( ) , NULL ) ) ! = ERROR_SUCCESS ) {
srs_error ( " write m3u8 failed. ret=%d " , ret ) ;
return ret ;
}
srs_info ( " write m3u8 %s success. " , m3u8_file . c_str ( ) ) ;
// notify handler for update m3u8.
winlin
10 years ago