tvheadend/mux.c
2008-02-09 11:14:39 +00:00

209 lines
3.5 KiB
C

/*
* tvheadend, Muxing
* Copyright (C) 2007 Andreas Öman
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define _GNU_SOURCE
#include <stdlib.h>
#include <pthread.h>
#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <libhts/htscfg.h>
#include "tvhead.h"
#include "dispatch.h"
#include "teletext.h"
#include "transports.h"
#include "subscriptions.h"
#include "psi.h"
#include "buffer.h"
/*
* pause playback
*/
void
muxer_pause(th_muxer_t *tm)
{
}
/*
* playback start
*/
void
muxer_play(th_muxer_t *tm, int64_t toffset)
{
th_subscription_t *s = tm->tm_subscription;
if(!tm->tm_linked) {
LIST_INSERT_HEAD(&s->ths_transport->tht_muxers, tm, tm_transport_link);
tm->tm_linked = 1;
}
if(toffset == AV_NOPTS_VALUE) {
/* continue from last playback */
tm->tm_offset = 0;
} else {
tm->tm_offset = toffset;
}
tm->tm_status = TM_PLAY;
}
/**
*
*/
static void
mux_new_packet_for_stream(th_muxer_t *tm, th_muxstream_t *tms, th_pkt_t *pkt)
{
if(tm->tm_offset == 0) {
/* Direct playback, pass it on at once */
tm->tm_output(tm->tm_opaque, tms, pkt);
return;
}
}
/**
*
*/
static void
mux_new_packet(th_muxer_t *tm, th_stream_t *st, th_pkt_t *pkt)
{
th_muxstream_t *tms;
pkt_store(pkt); /* need to keep packet around */
switch(tm->tm_status) {
case TM_IDLE:
break;
case TM_WAITING_FOR_LOCK:
break;
case TM_PLAY:
LIST_FOREACH(tms, &tm->tm_streams, tms_muxer_link0) {
if(tms->tms_stream == st) {
mux_new_packet_for_stream(tm, tms, pkt);
break;
}
}
break;
case TM_PAUSE:
break;
}
}
/*
* TS Muxer
*/
th_muxer_t *
muxer_init(th_subscription_t *s, th_mux_output_t *cb, void *opaque,
int flags)
{
th_transport_t *t = s->ths_transport;
th_stream_t *st;
th_muxer_t *tm;
th_muxstream_t *tms;
tm = calloc(1, sizeof(th_muxer_t));
tm->tm_subscription = s;
tm->tm_output = cb;
tm->tm_opaque = opaque;
tm->tm_new_pkt = mux_new_packet;
LIST_FOREACH(st, &t->tht_streams, st_link) {
switch(st->st_type) {
case HTSTV_MPEG2VIDEO:
case HTSTV_MPEG2AUDIO:
case HTSTV_AC3:
case HTSTV_H264:
break;
default:
continue;
}
tms = calloc(1, sizeof(th_muxstream_t));
tms->tms_muxer = tm;
tms->tms_stream = st;
LIST_INSERT_HEAD(&tm->tm_streams, tms, tms_muxer_link0);
}
s->ths_muxer = tm;
return tm;
}
/*
*
*/
static void
tms_destroy(th_muxstream_t *tms)
{
LIST_REMOVE(tms, tms_muxer_link0);
// dtimer_disarm(&tms->tms_timer);
free(tms);
}
/*
*
*/
void
muxer_deinit(th_muxer_t *tm, th_subscription_t *s)
{
th_muxstream_t *tms;
s->ths_raw_input = NULL;
s->ths_muxer = NULL;
if(tm->tm_linked)
LIST_REMOVE(tm, tm_transport_link);
while((tms = LIST_FIRST(&tm->tm_streams)) != NULL)
tms_destroy(tms);
free(tm);
}