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module-rtp: add beginnings of rtp-sink

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This commit is contained in:
Wim Taymans 2022-10-05 18:00:11 +02:00
parent 1b4ade211d
commit 3e57570e9a
3 changed files with 835 additions and 19 deletions
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10
src/modules/meson.build
View file

@ -27,6 +27,7 @@ module_sources = [
'module-raop-discover.c',
'module-raop-sink.c',
'module-rtp-source.c',
'module-rtp-sink.c',
'module-session-manager.c',
'module-zeroconf-discover.c',
'module-roc-source.c',
@ -492,6 +493,15 @@ pipewire_module_rtp_source = shared_library('pipewire-module-rtp-source',
dependencies : [mathlib, dl_lib, rt_lib, pipewire_dep],
)
pipewire_module_rtp_sink = shared_library('pipewire-module-rtp-sink',
[ 'module-rtp-sink.c' ],
include_directories : [configinc],
install : true,
install_dir : modules_install_dir,
install_rpath: modules_install_dir,
dependencies : [mathlib, dl_lib, rt_lib, pipewire_dep],
)
build_module_roc = roc_lib.found()
if build_module_roc
pipewire_module_roc_sink = shared_library('pipewire-module-roc-sink',

801
src/modules/module-rtp-sink.c Normal file
View file

@ -0,0 +1,801 @@
/* PipeWire
*
* Copyright © 2022 Wim Taymans <wim.taymans@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "config.h"
#include <limits.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <net/if.h>
#include <ctype.h>
#include <spa/param/audio/format-utils.h>
#include <spa/utils/hook.h>
#include <spa/utils/ringbuffer.h>
#include <spa/utils/json.h>
#include <spa/debug/pod.h>
#include <pipewire/pipewire.h>
#include <pipewire/private.h>
#include <module-rtp/sap.h>
#include <module-rtp/rtp.h>
/** \page page_module_rtp_sink PipeWire Module: RTP sink
*
* The `rtp-sink` module creates a PipeWire sink that sends audio
* RTP packets.
*
* ## Module Options
*
* Options specific to the behavior of this module
*
* - `stream.props = {}`: properties to be passed to the stream
* - `sap.ip = <str>`: IP address of the SAP messages
* - `sap.port = <str>`: port of the SAP messages
* - `local.ifname = <str>`: interface name to use
* - `sess.latency.msec = <str>`: target network latency in milliseconds
*
* ## General options
*
* Options with well-known behavior:
*
* - \ref PW_KEY_NODE_NAME
* - \ref PW_KEY_NODE_DESCRIPTION
* - \ref PW_KEY_MEDIA_NAME
*
* ## Example configuration
*\code{.unparsed}
* context.modules = [
* { name = libpipewire-module-rtp-sink
* args = {
* #sap.ip = 224.0.0.56
* #sap.port = 9875
* #local.ifname = eth0
* sess.latency.msec = 200
* stream.props = {
* node.name = "rtp-sink"
* }
* }
* }
*]
*\endcode
*
*/
#define NAME "rtp-sink"
static const struct spa_dict_item module_info[] = {
{ PW_KEY_MODULE_AUTHOR, "Wim Taymans <wim.taymans@gmail.com>" },
{ PW_KEY_MODULE_DESCRIPTION, "RTP Source" },
{ PW_KEY_MODULE_USAGE, "sap.ip=<SAP IP address to listen on> "
"sap.port=<SAP port to listen on> "
"source.ip=<source IP address> "
"destination.ip=<destination IP address> "
"local.ifname=<local interface name to use> "
"sess.latency.msec=<target network latency in milliseconds> "
"stream.props= { key=value ... }" },
{ PW_KEY_MODULE_VERSION, PACKAGE_VERSION },
};
PW_LOG_TOPIC_STATIC(mod_topic, "mod." NAME);
#define PW_LOG_TOPIC_DEFAULT mod_topic
#define SAP_INTERVAL_SEC 5
#define BUFFER_SIZE (1u<<16)
#define BUFFER_MASK (BUFFER_SIZE-1)
#define DEFAULT_SAP_IP "224.0.0.56"
#define DEFAULT_SAP_PORT 9875
#define DEFAULT_FORMAT "S16BE"
#define DEFAULT_RATE 44100
#define DEFAULT_CHANNELS 2
#define DEFAULT_POSITION "[ FL FR ]"
#define DEFAULT_PORT 46000
#define DEFAULT_SOURCE_IP "0.0.0.0"
#define DEFAULT_DESTINATION_IP "224.0.0.56"
#define DEFAULT_TTL 1
#define DEFAULT_MTU 1280
struct impl {
struct pw_impl_module *module;
struct spa_hook module_listener;
struct pw_properties *props;
struct pw_context *module_context;
struct pw_loop *loop;
struct pw_core *core;
struct spa_hook core_listener;
struct spa_hook core_proxy_listener;
struct spa_source *timer;
struct pw_properties *stream_props;
struct pw_stream *stream;
struct spa_hook stream_listener;
unsigned int do_disconnect:1;
char *ifname;
char *session_name;
int sess_latency_msec;
bool mcast_loop;
bool ttl;
int mtu;
struct sockaddr_storage src_addr;
socklen_t src_len;
uint16_t port;
struct sockaddr_storage dst_addr;
socklen_t dst_len;
uint16_t sap_port;
struct sockaddr_storage sap_addr;
socklen_t sap_len;
struct spa_audio_info_raw info;
uint32_t frame_size;
int payload;
uint16_t seq;
uint32_t timestamp;
uint32_t ssrc;
struct spa_ringbuffer ring;
uint8_t buffer[BUFFER_SIZE];
int rtp_fd;
};
static void stream_destroy(void *d)
{
struct impl *impl = d;
spa_hook_remove(&impl->stream_listener);
impl->stream = NULL;
}
static inline void
set_iovec(struct spa_ringbuffer *rbuf, void *buffer, uint32_t size,
uint32_t offset, struct iovec *iov, uint32_t len)
{
iov[0].iov_len = SPA_MIN(len, size - offset);
iov[0].iov_base = SPA_PTROFF(buffer, offset, void);
iov[1].iov_len = len - iov[0].iov_len;
iov[1].iov_base = buffer;
}
static void flush_packets(struct impl *impl)
{
int32_t avail;
uint32_t index;
struct iovec iov[3];
struct msghdr msg;
ssize_t n;
struct rtp_header header;
spa_zero(header);
header.v = 2;
header.pt = impl->payload;
header.ssrc = htonl(impl->ssrc);
iov[0].iov_base = &header;
iov[0].iov_len = sizeof(header);
msg.msg_name = NULL;
msg.msg_namelen = 0;
msg.msg_iov = iov;
msg.msg_iovlen = 3;
msg.msg_control = NULL;
msg.msg_controllen = 0;
msg.msg_flags = 0;
avail = spa_ringbuffer_get_read_index(&impl->ring, &index);
while (avail >= impl->mtu) {
header.sequence_number = htons(impl->seq);
header.timestamp = htonl(impl->timestamp);
set_iovec(&impl->ring,
impl->buffer, BUFFER_SIZE,
index % BUFFER_MASK,
&iov[1], impl->mtu);
n = sendmsg(impl->rtp_fd, &msg, MSG_NOSIGNAL);
if (n < 0)
pw_log_warn("sendmsg() failed: %m");
impl->seq++;
impl->timestamp += impl->mtu / impl->frame_size;
index += impl->mtu;
avail -= impl->mtu;
}
spa_ringbuffer_read_update(&impl->ring, index);
}
static void stream_process(void *data)
{
struct impl *impl = data;
struct pw_buffer *buf;
struct spa_data *d;
uint32_t index;
int32_t filled, wanted;
if ((buf = pw_stream_dequeue_buffer(impl->stream)) == NULL) {
pw_log_debug("Out of stream buffers: %m");
return;
}
d = buf->buffer->datas;
wanted = d[0].chunk->size;
filled = spa_ringbuffer_get_write_index(&impl->ring, &index);
if (filled > (int32_t)BUFFER_SIZE) {
pw_log_warn("overrun %u > %u", filled, BUFFER_SIZE);
} else {
spa_ringbuffer_write_data(&impl->ring,
impl->buffer,
BUFFER_SIZE,
index & BUFFER_MASK,
d[0].data, wanted);
index += wanted;
spa_ringbuffer_write_update(&impl->ring, index);
}
pw_stream_queue_buffer(impl->stream, buf);
flush_packets(impl);
}
static void on_stream_state_changed(void *d, enum pw_stream_state old,
enum pw_stream_state state, const char *error)
{
struct impl *impl = d;
switch (state) {
case PW_STREAM_STATE_UNCONNECTED:
pw_log_info("stream disconnected, unloading");
pw_impl_module_schedule_destroy(impl->module);
break;
case PW_STREAM_STATE_ERROR:
pw_log_error("stream error: %s", error);
break;
default:
break;
}
}
static const struct pw_stream_events in_stream_events = {
PW_VERSION_STREAM_EVENTS,
.destroy = stream_destroy,
.state_changed = on_stream_state_changed,
.process = stream_process
};
static int parse_address(const char *address, uint16_t port,
struct sockaddr_storage *addr, socklen_t *len)
{
struct sockaddr_in *sa4 = (struct sockaddr_in*)addr;
struct sockaddr_in6 *sa6 = (struct sockaddr_in6*)addr;
if (inet_pton(AF_INET, address, &sa4->sin_addr) > 0) {
sa4->sin_family = AF_INET;
sa4->sin_port = htons(port);
*len = sizeof(*sa4);
} else if (inet_pton(AF_INET6, address, &sa6->sin6_addr) > 0) {
sa6->sin6_family = AF_INET6;
sa6->sin6_port = htons(port);
*len = sizeof(*sa6);
} else
return -EINVAL;
return 0;
}
static int make_multicast_socket(struct sockaddr_storage *src, socklen_t src_len,
struct sockaddr_storage *dst, socklen_t dst_len,
bool loop, int ttl)
{
int af, fd, val, res;
af = src->ss_family;
if ((fd = socket(af, SOCK_DGRAM | SOCK_CLOEXEC | SOCK_NONBLOCK, 0)) < 0) {
pw_log_error("socket failed: %m");
return -errno;
}
if (bind(fd, (struct sockaddr*)src, src_len) < 0) {
res = -errno;
pw_log_error("bind() failed: %m");
goto error;
}
if (connect(fd, (struct sockaddr*)dst, dst_len) < 0) {
res = -errno;
pw_log_error("connect() failed: %m");
goto error;
}
val = loop;
if (setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP, &val, sizeof(val)) < 0)
pw_log_warn("setsockopt(IP_MULTICAST_LOOP) failed: %m");
val = ttl;
if (setsockopt(fd, IPPROTO_IP, IP_MULTICAST_TTL, &val, sizeof(val)) < 0)
pw_log_warn("setsockopt(IP_MULTICAST_TTL) failed: %m");
return fd;
error:
close(fd);
return res;
}
static int setup_stream(struct impl *impl)
{
const struct spa_pod *params[1];
struct spa_pod_builder b;
uint32_t n_params;
uint8_t buffer[1024];
struct pw_properties *props;
int res, fd;
props = pw_properties_copy(impl->stream_props);
if (props == NULL)
return -errno;
pw_properties_setf(props, PW_KEY_NODE_RATE, "1/%d", impl->info.rate);
impl->stream = pw_stream_new(impl->core,
"rtp-sink capture", props);
if (impl->stream == NULL)
return -errno;
pw_stream_add_listener(impl->stream,
&impl->stream_listener,
&in_stream_events, impl);
n_params = 0;
spa_pod_builder_init(&b, buffer, sizeof(buffer));
params[n_params++] = spa_format_audio_raw_build(&b, SPA_PARAM_EnumFormat,
&impl->info);
if ((res = pw_stream_connect(impl->stream,
PW_DIRECTION_INPUT,
PW_ID_ANY,
PW_STREAM_FLAG_MAP_BUFFERS |
PW_STREAM_FLAG_AUTOCONNECT |
PW_STREAM_FLAG_RT_PROCESS,
params, n_params)) < 0)
return res;
if ((fd = make_multicast_socket(&impl->src_addr, impl->src_len,
&impl->dst_addr, impl->dst_len,
impl->mcast_loop, impl->ttl)) < 0)
return fd;
impl->rtp_fd = fd;
return 0;
}
static int get_ip(const struct sockaddr_storage *sa, char *ip, size_t len)
{
if (sa->ss_family == AF_INET) {
struct sockaddr_in *in = (struct sockaddr_in*)sa;
inet_ntop(sa->ss_family, &in->sin_addr, ip, len);
} else if (sa->ss_family == AF_INET6) {
struct sockaddr_in6 *in = (struct sockaddr_in6*)sa;
inet_ntop(sa->ss_family, &in->sin6_addr, ip, len);
} else
return -EIO;
return 0;
}
static void on_timer_event(void *data, uint64_t expirations)
{
struct impl *impl = data;
char buffer[1024], src_addr[64], dst_addr[64];
const char *user_name = "-", *af, *fmt;
uint32_t ntp;
af = impl->src_addr.ss_family == AF_INET ? "IP4" : "IP6";
ntp = (uint32_t) time(NULL) + 2208988800U;
get_ip(&impl->src_addr, src_addr, sizeof(src_addr));
get_ip(&impl->dst_addr, dst_addr, sizeof(dst_addr));
fmt = "L16";
snprintf(buffer, sizeof(buffer),
"v=0\n"
"o=%s %u 0 IN %s %s\n"
"s=%s\n"
"c=IN %s %s\n"
"t=%u 0\n"
"a=recvonly\n"
"m=audio %u RTP/AVP %i\n"
"a=rtpmap:%i %s/%u/%u\n"
"a=type:broadcast\n",
user_name, ntp, af, src_addr,
impl->session_name,
af, dst_addr,
ntp,
impl->port, impl->payload,
impl->payload, fmt, impl->info.rate, impl->info.channels);
pw_log_info("%s", buffer);
}
static int start_sap_announce(struct impl *impl)
{
int fd, res;
struct timespec value, interval;
if ((fd = make_multicast_socket(&impl->src_addr, impl->src_len,
&impl->sap_addr, impl->sap_len,
impl->mcast_loop, impl->ttl)) < 0)
return fd;
pw_log_info("starting SAP timer");
impl->timer = pw_loop_add_timer(impl->loop, on_timer_event, impl);
if (impl->timer == NULL) {
res = -errno;
pw_log_error("can't create timer source: %m");
goto error;
}
value.tv_sec = 0;
value.tv_nsec = 1;
interval.tv_sec = SAP_INTERVAL_SEC;
interval.tv_nsec = 0;
pw_loop_update_timer(impl->loop, impl->timer, &value, &interval, false);
return 0;
error:
close(fd);
return res;
}
static void core_destroy(void *d)
{
struct impl *impl = d;
spa_hook_remove(&impl->core_listener);
impl->core = NULL;
pw_impl_module_schedule_destroy(impl->module);
}
static const struct pw_proxy_events core_proxy_events = {
.destroy = core_destroy,
};
static void impl_destroy(struct impl *impl)
{
if (impl->stream)
pw_stream_destroy(impl->stream);
if (impl->core && impl->do_disconnect)
pw_core_disconnect(impl->core);
if (impl->timer)
pw_loop_destroy_source(impl->loop, impl->timer);
if (impl->rtp_fd != -1)
close(impl->rtp_fd);
pw_properties_free(impl->stream_props);
pw_properties_free(impl->props);
free(impl->ifname);
free(impl);
}
static void module_destroy(void *d)
{
struct impl *impl = d;
spa_hook_remove(&impl->module_listener);
impl_destroy(impl);
}
static const struct pw_impl_module_events module_events = {
PW_VERSION_IMPL_MODULE_EVENTS,
.destroy = module_destroy,
};
static void on_core_error(void *d, uint32_t id, int seq, int res, const char *message)
{
struct impl *impl = d;
pw_log_error("error id:%u seq:%d res:%d (%s): %s",
id, seq, res, spa_strerror(res), message);
if (id == PW_ID_CORE && res == -EPIPE)
pw_impl_module_schedule_destroy(impl->module);
}
static const struct pw_core_events core_events = {
PW_VERSION_CORE_EVENTS,
.error = on_core_error,
};
static inline uint32_t format_from_name(const char *name, size_t len)
{
int i;
for (i = 0; spa_type_audio_format[i].name; i++) {
if (strncmp(name, spa_debug_type_short_name(spa_type_audio_format[i].name), len) == 0)
return spa_type_audio_format[i].type;
}
return SPA_AUDIO_FORMAT_UNKNOWN;
}
static uint32_t channel_from_name(const char *name)
{
int i;
for (i = 0; spa_type_audio_channel[i].name; i++) {
if (spa_streq(name, spa_debug_type_short_name(spa_type_audio_channel[i].name)))
return spa_type_audio_channel[i].type;
}
return SPA_AUDIO_CHANNEL_UNKNOWN;
}
static void parse_position(struct spa_audio_info_raw *info, const char *val, size_t len)
{
struct spa_json it[2];
char v[256];
spa_json_init(&it[0], val, len);
if (spa_json_enter_array(&it[0], &it[1]) <= 0)
spa_json_init(&it[1], val, len);
info->channels = 0;
while (spa_json_get_string(&it[1], v, sizeof(v)) > 0 &&
info->channels < SPA_AUDIO_MAX_CHANNELS) {
info->position[info->channels++] = channel_from_name(v);
}
}
static void parse_audio_info(const struct pw_properties *props, struct spa_audio_info_raw *info)
{
const char *str;
spa_zero(*info);
if ((str = pw_properties_get(props, PW_KEY_AUDIO_FORMAT)) == NULL)
str = DEFAULT_FORMAT;
info->format = format_from_name(str, strlen(str));
info->rate = pw_properties_get_uint32(props, PW_KEY_AUDIO_RATE, info->rate);
if (info->rate == 0)
info->rate = DEFAULT_RATE;
info->channels = pw_properties_get_uint32(props, PW_KEY_AUDIO_CHANNELS, info->channels);
info->channels = SPA_MIN(info->channels, SPA_AUDIO_MAX_CHANNELS);
if ((str = pw_properties_get(props, SPA_KEY_AUDIO_POSITION)) != NULL)
parse_position(info, str, strlen(str));
if (info->channels == 0)
parse_position(info, DEFAULT_POSITION, strlen(DEFAULT_POSITION));
}
static int calc_frame_size(struct spa_audio_info_raw *info)
{
int res = info->channels;
switch (info->format) {
case SPA_AUDIO_FORMAT_U8:
case SPA_AUDIO_FORMAT_S8:
case SPA_AUDIO_FORMAT_ALAW:
case SPA_AUDIO_FORMAT_ULAW:
return res;
case SPA_AUDIO_FORMAT_S16:
case SPA_AUDIO_FORMAT_S16_OE:
case SPA_AUDIO_FORMAT_U16:
return res * 2;
case SPA_AUDIO_FORMAT_S24:
case SPA_AUDIO_FORMAT_S24_OE:
case SPA_AUDIO_FORMAT_U24:
return res * 3;
case SPA_AUDIO_FORMAT_S24_32:
case SPA_AUDIO_FORMAT_S24_32_OE:
case SPA_AUDIO_FORMAT_S32:
case SPA_AUDIO_FORMAT_S32_OE:
case SPA_AUDIO_FORMAT_U32:
case SPA_AUDIO_FORMAT_U32_OE:
case SPA_AUDIO_FORMAT_F32:
case SPA_AUDIO_FORMAT_F32_OE:
return res * 4;
case SPA_AUDIO_FORMAT_F64:
case SPA_AUDIO_FORMAT_F64_OE:
return res * 8;
default:
return 0;
}
}
static void copy_props(struct impl *impl, struct pw_properties *props, const char *key)
{
const char *str;
if ((str = pw_properties_get(props, key)) != NULL) {
if (pw_properties_get(impl->stream_props, key) == NULL)
pw_properties_set(impl->stream_props, key, str);
}
}
SPA_EXPORT
int pipewire__module_init(struct pw_impl_module *module, const char *args)
{
struct pw_context *context = pw_impl_module_get_context(module);
struct impl *impl;
struct pw_properties *props = NULL, *stream_props = NULL;
uint32_t id = pw_global_get_id(pw_impl_module_get_global(module));
uint32_t pid = getpid(), port;
const char *str;
int res = 0;
PW_LOG_TOPIC_INIT(mod_topic);
impl = calloc(1, sizeof(struct impl));
if (impl == NULL)
return -errno;
impl->rtp_fd = -1;
if (args == NULL)
args = "";
props = pw_properties_new_string(args);
if (props == NULL) {
res = -errno;
pw_log_error( "can't create properties: %m");
goto out;
}
impl->props = props;
stream_props = pw_properties_new(NULL, NULL);
if (stream_props == NULL) {
res = -errno;
pw_log_error( "can't create properties: %m");
goto out;
}
impl->stream_props = stream_props;
impl->module = module;
impl->module_context = context;
impl->loop = pw_context_get_main_loop(context);
if (pw_properties_get(props, PW_KEY_NODE_VIRTUAL) == NULL)
pw_properties_set(props, PW_KEY_NODE_VIRTUAL, "true");
if (pw_properties_get(stream_props, PW_KEY_NODE_NETWORK) == NULL)
pw_properties_set(stream_props, PW_KEY_NODE_NETWORK, "true");
// if (pw_properties_get(props, PW_KEY_MEDIA_CLASS) == NULL)
// pw_properties_set(props, PW_KEY_MEDIA_CLASS, "Audio/Sink");
if (pw_properties_get(props, PW_KEY_NODE_NAME) == NULL)
pw_properties_setf(props, PW_KEY_NODE_NAME, "rtp-sink-%u-%u", pid, id);
if (pw_properties_get(props, PW_KEY_NODE_DESCRIPTION) == NULL)
pw_properties_set(props, PW_KEY_NODE_DESCRIPTION,
pw_properties_get(props, PW_KEY_NODE_NAME));
if ((str = pw_properties_get(props, "stream.props")) != NULL)
pw_properties_update_string(stream_props, str, strlen(str));
copy_props(impl, props, PW_KEY_AUDIO_FORMAT);
copy_props(impl, props, PW_KEY_AUDIO_RATE);
copy_props(impl, props, PW_KEY_AUDIO_CHANNELS);
copy_props(impl, props, SPA_KEY_AUDIO_POSITION);
copy_props(impl, props, PW_KEY_NODE_NAME);
copy_props(impl, props, PW_KEY_NODE_DESCRIPTION);
copy_props(impl, props, PW_KEY_NODE_GROUP);
copy_props(impl, props, PW_KEY_NODE_LATENCY);
copy_props(impl, props, PW_KEY_NODE_VIRTUAL);
copy_props(impl, props, PW_KEY_MEDIA_CLASS);
parse_audio_info(impl->stream_props, &impl->info);
impl->frame_size = calc_frame_size(&impl->info);
if (impl->frame_size == 0) {
pw_log_error("unsupported audio format:%d channels:%d",
impl->info.format, impl->info.channels);
res = -EINVAL;
goto out;
}
impl->payload = 127;
impl->mtu = DEFAULT_MTU;
impl->ttl = DEFAULT_TTL;
impl->ssrc = rand();
impl->timestamp = rand();
impl->seq = rand();
str = pw_properties_get(props, "local.ifname");
impl->ifname = str ? strdup(str) : NULL;
if ((str = pw_properties_get(props, "sap.ip")) == NULL)
str = DEFAULT_SAP_IP;
port = pw_properties_get_uint32(props, "sap.port", DEFAULT_SAP_PORT);
if ((res = parse_address(str, port, &impl->sap_addr, &impl->sap_len)) < 0) {
pw_log_error("invalid sap.ip %s: %s", str, spa_strerror(res));
goto out;
}
if ((str = pw_properties_get(props, "source.ip")) == NULL)
str = DEFAULT_SOURCE_IP;
if ((res = parse_address(str, 0, &impl->src_addr, &impl->src_len)) < 0) {
pw_log_error("invalid source.ip %s: %s", str, spa_strerror(res));
goto out;
}
impl->port = DEFAULT_PORT + ((uint32_t) (rand() % 512) << 1);
impl->port = pw_properties_get_uint32(props, "destination.port", impl->port);
if ((str = pw_properties_get(props, "destination.ip")) == NULL)
str = DEFAULT_DESTINATION_IP;
if ((res = parse_address(str, impl->port, &impl->dst_addr, &impl->dst_len)) < 0) {
pw_log_error("invalid destination.ip %s: %s", str, spa_strerror(res));
goto out;
}
impl->core = pw_context_get_object(impl->module_context, PW_TYPE_INTERFACE_Core);
if (impl->core == NULL) {
str = pw_properties_get(props, PW_KEY_REMOTE_NAME);
impl->core = pw_context_connect(impl->module_context,
pw_properties_new(
PW_KEY_REMOTE_NAME, str,
NULL),
0);
impl->do_disconnect = true;
}
if (impl->core == NULL) {
res = -errno;
pw_log_error("can't connect: %m");
goto out;
}
pw_proxy_add_listener((struct pw_proxy*)impl->core,
&impl->core_proxy_listener,
&core_proxy_events, impl);
pw_core_add_listener(impl->core,
&impl->core_listener,
&core_events, impl);
if ((res = setup_stream(impl)) < 0)
goto out;
if ((res = start_sap_announce(impl)) < 0)
goto out;
pw_impl_module_add_listener(module, &impl->module_listener, &module_events, impl);
pw_impl_module_update_properties(module, &SPA_DICT_INIT_ARRAY(module_info));
pw_log_info("Successfully loaded module-rtp-sink");
return 0;
out:
impl_destroy(impl);
return res;
}

43
src/modules/module-rtp-source.c
View file

@ -56,9 +56,10 @@
*
* Options specific to the behavior of this module
*
* - `source.props = {}`: properties to be passed to the source stream
* - `source.name = <str>`: node.name of the source
* - `local.ip = <str>`: local sender ip
* - `stream.props = {}`: properties to be passed to the stream
* - `sap.ip = <str>`: IP address of the SAP messages
* - `sap.port = <str>`: port of the SAP messages
* - `local.ifname = <str>`: interface name to use
* - `sess.latency.msec = <str>`: target network latency in milliseconds
*
* ## General options
@ -74,7 +75,7 @@
* context.modules = [
* { name = libpipewire-module-rtp-source
* args = {
* #sap.address = 224.0.0.56
* #sap.ip = 224.0.0.56
* #sap.port = 9875
* #local.ifname = eth0
* sess.latency.msec = 200
@ -93,11 +94,11 @@
static const struct spa_dict_item module_info[] = {
{ PW_KEY_MODULE_AUTHOR, "Wim Taymans <wim.taymans@gmail.com>" },
{ PW_KEY_MODULE_DESCRIPTION, "RTP Source" },
{ PW_KEY_MODULE_USAGE, "sap.address=<SAP address to listen on> "
{ PW_KEY_MODULE_USAGE, "sap.ip=<SAP IP address to listen on> "
"sap.port=<SAP port to listen on> "
"local.ifname=<local interface name to use> "
"sess.latency.msec=<target network latency in milliseconds> "
"source.props= { key=value ... }" },
"stream.props= { key=value ... }" },
{ PW_KEY_MODULE_VERSION, PACKAGE_VERSION },
};
@ -105,15 +106,15 @@ static const struct spa_dict_item module_info[] = {
PW_LOG_TOPIC_STATIC(mod_topic, "mod." NAME);
#define PW_LOG_TOPIC_DEFAULT mod_topic
#define SAP_DEFAULT_IP "224.0.0.56"
#define SAP_DEFAULT_PORT 9875
#define DEFAULT_SESS_LATENCY 200
#define ERROR_MSEC 2
#define MAX_SESSIONS 16
#define MTU 1500
#define MTU 1280
#define CLEANUP_INTERVAL_SEC 20
#define DEFAULT_SAP_IP "224.0.0.56"
#define DEFAULT_SAP_PORT 9875
#define DEFAULT_SESS_LATENCY 200
struct impl {
struct pw_impl_module *module;
struct spa_hook module_listener;
@ -134,7 +135,7 @@ struct impl {
unsigned int do_disconnect:1;
char *ifname;
char *sap_address;
char *sap_ip;
int sap_port;
int sess_latency_msec;
@ -336,8 +337,12 @@ on_rtp_io(void *data, int fd, uint32_t mask)
sess->have_sync = true;
sess->buffering = true;
pw_log_info("sync to timestamp %u", index);
spa_dll_init(&sess->dll);
spa_dll_set_bw(&sess->dll, SPA_DLL_BW_MIN, 128, sess->info.info.rate);
} else if (expected_index != index) {
pw_log_warn("unexpected timestamp (%u != %u)",
pw_log_debug("unexpected timestamp (%u != %u)",
index / sess->info.stride,
expected_index / sess->info.stride);
index = expected_index;
@ -818,12 +823,12 @@ static int start_sap_listener(struct impl *impl)
socklen_t salen;
int fd, res;
if (inet_pton(AF_INET, impl->sap_address, &sa4.sin_addr) > 0) {
if (inet_pton(AF_INET, impl->sap_ip, &sa4.sin_addr) > 0) {
sa4.sin_family = AF_INET;
sa4.sin_port = htons(impl->sap_port);
sa = (struct sockaddr*) &sa4;
salen = sizeof(sa4);
} else if (inet_pton(AF_INET6, impl->sap_address, &sa6.sin6_addr) > 0) {
} else if (inet_pton(AF_INET6, impl->sap_ip, &sa6.sin6_addr) > 0) {
sa6.sin6_family = AF_INET6;
sa6.sin6_port = htons(impl->sap_port);
sa = (struct sockaddr*) &sa6;
@ -895,7 +900,7 @@ static void impl_destroy(struct impl *impl)
pw_properties_free(impl->props);
free(impl->ifname);
free(impl->sap_address);
free(impl->sap_ip);
free(impl);
}
@ -982,10 +987,10 @@ int pipewire__module_init(struct pw_impl_module *module, const char *args)
str = pw_properties_get(props, "local.ifname");
impl->ifname = str ? strdup(str) : NULL;
str = pw_properties_get(props, "sap.address");
impl->sap_address = strdup(str ? str : SAP_DEFAULT_IP);
str = pw_properties_get(props, "sap.ip");
impl->sap_ip = strdup(str ? str : DEFAULT_SAP_IP);
impl->sap_port = pw_properties_get_uint32(props,
"sap.port", SAP_DEFAULT_PORT);
"sap.port", DEFAULT_SAP_PORT);
impl->sess_latency_msec = pw_properties_get_uint32(props,
"sess.latency.msec", DEFAULT_SESS_LATENCY);