mirror of
https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
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108 lines
2.9 KiB
C
108 lines
2.9 KiB
C
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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 <time.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/socket.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/util.h>
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#include <polypcore/log.h>
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#include <polypcore/xmalloc.h>
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#include "sap.h"
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pa_sap_context* pa_sap_context_init_send(pa_sap_context *c, int fd, char *sdp_data) {
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assert(c);
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assert(fd >= 0);
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assert(sdp_data);
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c->fd = fd;
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c->sdp_data = sdp_data;
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c->msg_id_hash = (uint16_t) (rand()*rand());
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return c;
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}
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void pa_sap_context_destroy(pa_sap_context *c) {
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assert(c);
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close(c->fd);
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pa_xfree(c->sdp_data);
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}
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int pa_sap_send(pa_sap_context *c, int goodbye) {
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uint32_t header;
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const char mime[] = "application/sdp";
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struct sockaddr_storage sa_buf;
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struct sockaddr *sa = (struct sockaddr*) &sa_buf;
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socklen_t salen = sizeof(sa_buf);
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struct iovec iov[4];
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struct msghdr m;
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int k;
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if (getsockname(c->fd, sa, &salen) < 0) {
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pa_log("getsockname() failed: %s\n", strerror(errno));
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return -1;
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}
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assert(sa->sa_family == AF_INET || sa->sa_family == AF_INET6);
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header = htonl(((uint32_t) 1 << 29) |
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(sa->sa_family == AF_INET6 ? (uint32_t) 1 << 28 : 0) |
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(goodbye ? (uint32_t) 1 << 26 : 0) |
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(c->msg_id_hash));
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iov[0].iov_base = &header;
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iov[0].iov_len = sizeof(header);
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iov[1].iov_base = sa->sa_family == AF_INET ? (void*) &((struct sockaddr_in*) sa)->sin_addr : (void*) &((struct sockaddr_in6*) sa)->sin6_addr;
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iov[1].iov_len = sa->sa_family == AF_INET ? 4 : 16;
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iov[2].iov_base = (char*) mime;
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iov[2].iov_len = sizeof(mime);
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iov[3].iov_base = c->sdp_data;
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iov[3].iov_len = strlen(c->sdp_data);
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m.msg_name = NULL;
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m.msg_namelen = 0;
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m.msg_iov = iov;
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m.msg_iovlen = 4;
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m.msg_control = NULL;
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m.msg_controllen = 0;
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m.msg_flags = 0;
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if ((k = sendmsg(c->fd, &m, MSG_DONTWAIT)) < 0)
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pa_log("sendmsg() failed: %s\n", strerror(errno));
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return k;
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}
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