mirror of
https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
synced 2025-11-02 09:01:46 -05:00
rename module-rtp-monitor to module-rtp-send
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@726 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering
parent
3b803e7168
commit
b04a4e65ca
2 changed files with 8 additions and 8 deletions
363
src/modules/rtp/module-rtp-send.c
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363
src/modules/rtp/module-rtp-send.c
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@ -0,0 +1,363 @@
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/* $Id$ */
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/***
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This file is part of polypaudio.
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polypaudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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polypaudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with polypaudio; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <assert.h>
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#include <stdio.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <errno.h>
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#include <string.h>
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#include <unistd.h>
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#include <polypcore/module.h>
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#include <polypcore/llist.h>
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#include <polypcore/source.h>
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#include <polypcore/source-output.h>
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#include <polypcore/memblockq.h>
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#include <polypcore/log.h>
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#include <polypcore/util.h>
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#include <polypcore/xmalloc.h>
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#include <polypcore/modargs.h>
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#include <polypcore/namereg.h>
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#include "module-rtp-send-symdef.h"
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#include "rtp.h"
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#include "sdp.h"
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#include "sap.h"
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PA_MODULE_AUTHOR("Lennart Poettering")
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PA_MODULE_DESCRIPTION("Read data from source and send it to the network via RTP/SAP/SDP")
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PA_MODULE_VERSION(PACKAGE_VERSION)
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PA_MODULE_USAGE(
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"source=<name of the source> "
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"format=<sample format> "
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"channels=<number of channels> "
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"rate=<sample rate> "
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"destinaton=<destination IP address> "
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"port=<port number> "
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"mtu=<maximum transfer unit> "
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"loop=<loopback to local host?>"
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)
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#define DEFAULT_PORT 46000
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#define SAP_PORT 9875
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#define DEFAULT_DESTINATION "224.0.1.3"
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#define MEMBLOCKQ_MAXLENGTH (1024*170)
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#define DEFAULT_MTU 1280
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#define SAP_INTERVAL 5000000
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static const char* const valid_modargs[] = {
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"source",
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"format",
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"channels",
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"rate",
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"destination",
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"port",
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"loop",
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NULL
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};
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struct userdata {
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pa_module *module;
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pa_core *core;
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pa_source_output *source_output;
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pa_memblockq *memblockq;
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pa_rtp_context rtp_context;
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pa_sap_context sap_context;
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size_t mtu;
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pa_time_event *sap_event;
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};
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static void source_output_push(pa_source_output *o, const pa_memchunk *chunk) {
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struct userdata *u;
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assert(o);
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u = o->userdata;
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if (pa_memblockq_push(u->memblockq, chunk) < 0) {
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pa_log(__FILE__": Failed to push chunk into memblockq.");
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return;
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}
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pa_rtp_send(&u->rtp_context, u->mtu, u->memblockq);
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}
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static void source_output_kill(pa_source_output* o) {
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struct userdata *u;
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assert(o);
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u = o->userdata;
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pa_module_unload_request(u->module);
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pa_source_output_disconnect(u->source_output);
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pa_source_output_unref(u->source_output);
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u->source_output = NULL;
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}
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static pa_usec_t source_output_get_latency (pa_source_output *o) {
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struct userdata *u;
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assert(o);
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u = o->userdata;
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return pa_bytes_to_usec(pa_memblockq_get_length(u->memblockq), &o->sample_spec);
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}
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static void sap_event_cb(pa_mainloop_api *m, pa_time_event *t, const struct timeval *tv, void *userdata) {
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struct userdata *u = userdata;
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struct timeval next;
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assert(m);
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assert(t);
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assert(tv);
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assert(u);
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pa_sap_send(&u->sap_context, 0);
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pa_gettimeofday(&next);
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pa_timeval_add(&next, SAP_INTERVAL);
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m->time_restart(t, &next);
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}
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int pa__init(pa_core *c, pa_module*m) {
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struct userdata *u;
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pa_modargs *ma = NULL;
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const char *dest;
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uint32_t port = DEFAULT_PORT, mtu;
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int af, fd = -1, sap_fd = -1;
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pa_source *s;
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pa_sample_spec ss;
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pa_channel_map cm;
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struct sockaddr_in sa4, sap_sa4;
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struct sockaddr_in6 sa6, sap_sa6;
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struct sockaddr_storage sa_dst;
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pa_source_output *o = NULL;
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uint8_t payload;
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char *p;
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int r;
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socklen_t k;
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struct timeval tv;
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char hn[128], *n;
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int loop = 0;
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assert(c);
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assert(m);
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if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
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pa_log(__FILE__": failed to parse module arguments");
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goto fail;
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}
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if (!(s = pa_namereg_get(m->core, pa_modargs_get_value(ma, "source", NULL), PA_NAMEREG_SOURCE, 1))) {
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pa_log(__FILE__": source does not exist.");
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goto fail;
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}
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if (pa_modargs_get_value_boolean(ma, "loop", &loop) < 0) {
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pa_log(__FILE__": failed to parse \"loop\" parameter.");
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goto fail;
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}
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ss = s->sample_spec;
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pa_rtp_sample_spec_fixup(&ss);
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cm = s->channel_map;
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if (pa_modargs_get_sample_spec(ma, &ss) < 0) {
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pa_log(__FILE__": failed to parse sample specification");
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goto fail;
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}
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if (!pa_rtp_sample_spec_valid(&ss)) {
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pa_log(__FILE__": specified sample type not compatible with RTP");
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goto fail;
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}
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if (ss.channels != cm.channels)
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pa_channel_map_init_auto(&cm, ss.channels);
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payload = pa_rtp_payload_from_sample_spec(&ss);
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mtu = (DEFAULT_MTU/pa_frame_size(&ss))*pa_frame_size(&ss);
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if (pa_modargs_get_value_u32(ma, "mtu", &mtu) < 0 || mtu < 1 || mtu % pa_frame_size(&ss) != 0) {
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pa_log(__FILE__": invalid mtu.");
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goto fail;
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}
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port = DEFAULT_PORT + ((rand() % 512) << 1);
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if (pa_modargs_get_value_u32(ma, "port", &port) < 0 || port < 1 || port > 0xFFFF) {
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pa_log(__FILE__": port= expects a numerical argument between 1 and 65535.");
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goto fail;
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}
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if (port & 1)
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pa_log_warn(__FILE__": WARNING: port number not even as suggested in RFC3550!");
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dest = pa_modargs_get_value(ma, "destination", DEFAULT_DESTINATION);
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if (inet_pton(AF_INET6, dest, &sa6.sin6_addr) > 0) {
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sa6.sin6_family = af = AF_INET6;
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sa6.sin6_port = htons(port);
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sap_sa6 = sa6;
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sap_sa6.sin6_port = htons(SAP_PORT);
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} else if (inet_pton(AF_INET, dest, &sa4.sin_addr) > 0) {
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sa4.sin_family = af = AF_INET;
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sa4.sin_port = htons(port);
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sap_sa4 = sa4;
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sap_sa4.sin_port = htons(SAP_PORT);
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} else {
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pa_log(__FILE__": invalid destination '%s'", dest);
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goto fail;
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}
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if ((fd = socket(af, SOCK_DGRAM, 0)) < 0) {
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pa_log(__FILE__": socket() failed: %s", strerror(errno));
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goto fail;
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}
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if (connect(fd, af == AF_INET ? (struct sockaddr*) &sa4 : (struct sockaddr*) &sa6, af == AF_INET ? sizeof(sa4) : sizeof(sa6)) < 0) {
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pa_log(__FILE__": connect() failed: %s", strerror(errno));
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goto fail;
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}
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if ((sap_fd = socket(af, SOCK_DGRAM, 0)) < 0) {
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pa_log(__FILE__": socket() failed: %s", strerror(errno));
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goto fail;
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}
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if (connect(sap_fd, af == AF_INET ? (struct sockaddr*) &sap_sa4 : (struct sockaddr*) &sap_sa6, af == AF_INET ? sizeof(sap_sa4) : sizeof(sap_sa6)) < 0) {
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pa_log(__FILE__": connect() failed: %s", strerror(errno));
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goto fail;
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}
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if (setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP, &loop, sizeof(loop)) < 0 ||
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setsockopt(sap_fd, IPPROTO_IP, IP_MULTICAST_LOOP, &loop, sizeof(loop)) < 0) {
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pa_log(__FILE__": IP_MULTICAST_LOOP failed: %s", strerror(errno));
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goto fail;
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}
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if (!(o = pa_source_output_new(s, __FILE__, "RTP Monitor Stream", &ss, &cm, PA_RESAMPLER_INVALID))) {
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pa_log(__FILE__": failed to create source output.");
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goto fail;
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}
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o->push = source_output_push;
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o->kill = source_output_kill;
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o->get_latency = source_output_get_latency;
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o->owner = m;
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u = pa_xnew(struct userdata, 1);
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m->userdata = u;
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o->userdata = u;
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u->module = m;
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u->core = c;
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u->source_output = o;
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u->memblockq = pa_memblockq_new(
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0,
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MEMBLOCKQ_MAXLENGTH,
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MEMBLOCKQ_MAXLENGTH,
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pa_frame_size(&ss),
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1,
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0,
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NULL,
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c->memblock_stat);
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u->mtu = mtu;
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k = sizeof(sa_dst);
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r = getsockname(fd, (struct sockaddr*) &sa_dst, &k);
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assert(r >= 0);
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n = pa_sprintf_malloc("Polypaudio RTP Stream on %s", pa_get_fqdn(hn, sizeof(hn)));
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p = pa_sdp_build(af,
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af == AF_INET ? (void*) &((struct sockaddr_in*) &sa_dst)->sin_addr : (void*) &((struct sockaddr_in6*) &sa_dst)->sin6_addr,
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af == AF_INET ? (void*) &sa4.sin_addr : (void*) &sa6.sin6_addr,
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n, port, payload, &ss);
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pa_xfree(n);
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pa_rtp_context_init_send(&u->rtp_context, fd, c->cookie, payload, pa_frame_size(&ss));
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pa_sap_context_init_send(&u->sap_context, sap_fd, p);
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pa_log_info(__FILE__": RTP stream initialized with mtu %u on %s:%u, SSRC=0x%08x, payload=%u, initial sequence #%u", mtu, dest, port, u->rtp_context.ssrc, payload, u->rtp_context.sequence);
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pa_log_info(__FILE__": SDP-Data:\n%s\n"__FILE__": EOF", p);
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pa_sap_send(&u->sap_context, 0);
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pa_gettimeofday(&tv);
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pa_timeval_add(&tv, SAP_INTERVAL);
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u->sap_event = c->mainloop->time_new(c->mainloop, &tv, sap_event_cb, u);
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pa_modargs_free(ma);
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return 0;
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fail:
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if (ma)
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pa_modargs_free(ma);
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if (fd >= 0)
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close(fd);
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if (sap_fd >= 0)
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close(sap_fd);
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if (o) {
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pa_source_output_disconnect(o);
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pa_source_output_unref(o);
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}
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return -1;
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}
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void pa__done(pa_core *c, pa_module*m) {
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struct userdata *u;
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assert(c);
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assert(m);
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if (!(u = m->userdata))
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return;
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c->mainloop->time_free(u->sap_event);
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if (u->source_output) {
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pa_source_output_disconnect(u->source_output);
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pa_source_output_unref(u->source_output);
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}
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pa_rtp_context_destroy(&u->rtp_context);
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pa_sap_send(&u->sap_context, 1);
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pa_sap_context_destroy(&u->sap_context);
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pa_memblockq_free(u->memblockq);
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pa_xfree(u);
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}
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