cb8266e3ea
poll/dispatcher framework. The top reasons for going multithreaded is: * Take adventage of multicore CPUs * No need to put slow operations in ugly helper threads now that the entire app is designed for multithreads * Some of the timing sensetive tasks (IPTV output / RTP / UDP pacing) can run on RT priority.
216 lines
3.8 KiB
C
216 lines
3.8 KiB
C
/*
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* tvheadend, Muxing
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* Copyright (C) 2007 Andreas Öman
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#define _GNU_SOURCE
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#include <stdlib.h>
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#include <pthread.h>
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#include <assert.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <libhts/htscfg.h>
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#include "tvhead.h"
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#include "dispatch.h"
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#include "teletext.h"
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#include "transports.h"
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#include "subscriptions.h"
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#include "psi.h"
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#include "buffer.h"
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#include "mux.h"
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/*
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* pause playback
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*/
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void
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muxer_pause(th_muxer_t *tm)
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{
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}
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/*
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* playback start
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*/
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void
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muxer_play(th_muxer_t *tm, int64_t toffset)
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{
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th_subscription_t *s = tm->tm_subscription;
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th_transport_t *t = s->ths_transport;
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transport_link_muxer(t, tm);
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if(!tm->tm_linked) {
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pthread_mutex_lock(&t->tht_delivery_mutex);
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LIST_INSERT_HEAD(&s->ths_transport->tht_muxers, tm, tm_transport_link);
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pthread_mutex_unlock(&t->tht_delivery_mutex);
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tm->tm_linked = 1;
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}
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if(toffset == AV_NOPTS_VALUE) {
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/* continue from last playback */
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tm->tm_offset = 0;
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} else {
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tm->tm_offset = toffset;
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}
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tm->tm_status = TM_PLAY;
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}
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/**
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*
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*/
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static void
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mux_new_packet_for_stream(th_muxer_t *tm, th_muxstream_t *tms, th_pkt_t *pkt)
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{
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if(tm->tm_offset == 0) {
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/* Direct playback, pass it on at once */
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tm->tm_output(tm->tm_opaque, tms, pkt);
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return;
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}
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}
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/**
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*
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*/
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static void
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mux_new_packet(th_muxer_t *tm, th_stream_t *st, th_pkt_t *pkt)
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{
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th_muxstream_t *tms;
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pkt_store(pkt); /* need to keep packet around */
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switch(tm->tm_status) {
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case TM_IDLE:
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break;
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case TM_WAITING_FOR_LOCK:
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break;
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case TM_PLAY:
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LIST_FOREACH(tms, &tm->tm_streams, tms_muxer_link0) {
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if(tms->tms_stream == st) {
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mux_new_packet_for_stream(tm, tms, pkt);
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break;
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}
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}
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break;
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case TM_PAUSE:
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break;
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}
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}
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/*
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* TS Muxer
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*/
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th_muxer_t *
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muxer_init(th_subscription_t *s, th_mux_output_t *cb, void *opaque)
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{
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th_transport_t *t = s->ths_transport;
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th_stream_t *st;
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th_muxer_t *tm;
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th_muxstream_t *tms;
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tm = calloc(1, sizeof(th_muxer_t));
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tm->tm_subscription = s;
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tm->tm_output = cb;
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tm->tm_opaque = opaque;
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tm->tm_new_pkt = mux_new_packet;
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LIST_FOREACH(st, &t->tht_streams, st_link) {
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switch(st->st_type) {
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case HTSTV_MPEG2VIDEO:
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case HTSTV_MPEG2AUDIO:
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case HTSTV_AC3:
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case HTSTV_H264:
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break;
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default:
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continue;
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}
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tms = calloc(1, sizeof(th_muxstream_t));
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tms->tms_muxer = tm;
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tms->tms_stream = st;
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LIST_INSERT_HEAD(&tm->tm_streams, tms, tms_muxer_link0);
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}
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s->ths_muxer = tm;
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return tm;
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}
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/*
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*
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*/
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static void
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tms_destroy(th_muxstream_t *tms)
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{
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LIST_REMOVE(tms, tms_muxer_link0);
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// dtimer_disarm(&tms->tms_timer);
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free(tms);
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}
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/*
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*
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*/
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void
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muxer_deinit(th_muxer_t *tm, th_subscription_t *s)
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{
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th_muxstream_t *tms;
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th_transport_t *t;
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s->ths_raw_input = NULL;
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s->ths_muxer = NULL;
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if(tm->tm_linked) {
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pthread_mutex_lock(&t->tht_delivery_mutex);
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LIST_REMOVE(tm, tm_transport_link);
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while((tms = LIST_FIRST(&tm->tm_streams)) != NULL)
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tms_destroy(tms);
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free(tm);
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}
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