You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
585 lines
14 KiB
585 lines
14 KiB
/**
|
|
* xrdp: A Remote Desktop Protocol server.
|
|
* pulse sink
|
|
*
|
|
* Copyright (C) Jay Sorg 2013
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
/*
|
|
* see pulse-notes.txt
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include <config.h>
|
|
#endif
|
|
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
#include <netinet/in.h>
|
|
#include <netinet/tcp.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/un.h>
|
|
#include <sys/types.h>
|
|
|
|
#include <stdlib.h>
|
|
#include <sys/stat.h>
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
#include <limits.h>
|
|
#include <sys/ioctl.h>
|
|
#include <poll.h>
|
|
|
|
#include <pulse/rtclock.h>
|
|
#include <pulse/timeval.h>
|
|
#include <pulse/xmalloc.h>
|
|
#include <pulse/i18n.h>
|
|
|
|
#include <pulsecore/core-error.h>
|
|
#include <pulsecore/sink.h>
|
|
#include <pulsecore/module.h>
|
|
#include <pulsecore/core-util.h>
|
|
#include <pulsecore/modargs.h>
|
|
#include <pulsecore/log.h>
|
|
#include <pulsecore/thread.h>
|
|
#include <pulsecore/thread-mq.h>
|
|
#include <pulsecore/rtpoll.h>
|
|
|
|
#include "module-xrdp-sink-symdef.h"
|
|
|
|
PA_MODULE_AUTHOR("Jay Sorg");
|
|
PA_MODULE_DESCRIPTION("xrdp sink");
|
|
PA_MODULE_VERSION(PACKAGE_VERSION);
|
|
PA_MODULE_LOAD_ONCE(FALSE);
|
|
PA_MODULE_USAGE(
|
|
"sink_name=<name for the sink> "
|
|
"sink_properties=<properties for the sink> "
|
|
"format=<sample format> "
|
|
"rate=<sample rate>"
|
|
"channels=<number of channels> "
|
|
"channel_map=<channel map>");
|
|
|
|
#define DEFAULT_SINK_NAME "xrdp"
|
|
#define BLOCK_USEC (PA_USEC_PER_SEC * 2)
|
|
#define CHANSRV_PORT_STR "/tmp/.xrdp/xrdp_chansrv_audio_socket_%d"
|
|
|
|
struct userdata {
|
|
pa_core *core;
|
|
pa_module *module;
|
|
pa_sink *sink;
|
|
|
|
pa_thread *thread;
|
|
pa_thread_mq thread_mq;
|
|
pa_rtpoll *rtpoll;
|
|
|
|
pa_usec_t block_usec;
|
|
pa_usec_t timestamp;
|
|
pa_usec_t failed_connect_time;
|
|
pa_usec_t last_send_time;
|
|
|
|
int fd; /* unix domain socket connection to xrdp chansrv */
|
|
int display_num;
|
|
int skip_bytes;
|
|
int got_max_latency;
|
|
|
|
};
|
|
|
|
static const char* const valid_modargs[] = {
|
|
"sink_name",
|
|
"sink_properties",
|
|
"format",
|
|
"rate",
|
|
"channels",
|
|
"channel_map",
|
|
NULL
|
|
};
|
|
|
|
static int close_send(struct userdata *u);
|
|
|
|
static int sink_process_msg(pa_msgobject *o, int code, void *data,
|
|
int64_t offset, pa_memchunk *chunk) {
|
|
|
|
struct userdata *u = PA_SINK(o)->userdata;
|
|
pa_usec_t now;
|
|
long lat;
|
|
|
|
//pa_log("sink_process_msg: code %d", code);
|
|
|
|
switch (code) {
|
|
|
|
case PA_SINK_MESSAGE_SET_VOLUME: /* 3 */
|
|
break;
|
|
|
|
case PA_SINK_MESSAGE_SET_MUTE: /* 6 */
|
|
break;
|
|
|
|
case PA_SINK_MESSAGE_GET_LATENCY: /* 7 */
|
|
now = pa_rtclock_now();
|
|
lat = u->timestamp > now ? u->timestamp - now : 0ULL;
|
|
//pa_log("sink_process_msg: lat %ld", lat);
|
|
*((pa_usec_t*) data) = lat;
|
|
return 0;
|
|
|
|
case PA_SINK_MESSAGE_GET_REQUESTED_LATENCY: /* 8 */
|
|
break;
|
|
|
|
case PA_SINK_MESSAGE_SET_STATE: /* 9 */
|
|
if (PA_PTR_TO_UINT(data) == PA_SINK_RUNNING) /* 0 */ {
|
|
pa_log("sink_process_msg: running");
|
|
u->timestamp = pa_rtclock_now();
|
|
} else {
|
|
pa_log("sink_process_msg: not running");
|
|
close_send(u);
|
|
}
|
|
break;
|
|
|
|
}
|
|
|
|
return pa_sink_process_msg(o, code, data, offset, chunk);
|
|
}
|
|
|
|
static void sink_update_requested_latency_cb(pa_sink *s) {
|
|
struct userdata *u;
|
|
size_t nbytes;
|
|
|
|
pa_sink_assert_ref(s);
|
|
pa_assert_se(u = s->userdata);
|
|
|
|
u->block_usec = pa_sink_get_requested_latency_within_thread(s);
|
|
|
|
u->got_max_latency = 0;
|
|
if (u->block_usec == (pa_usec_t) -1) {
|
|
u->block_usec = s->thread_info.max_latency;
|
|
u->got_max_latency = 1;
|
|
}
|
|
|
|
nbytes = pa_usec_to_bytes(u->block_usec, &s->sample_spec);
|
|
pa_sink_set_max_rewind_within_thread(s, nbytes);
|
|
pa_sink_set_max_request_within_thread(s, nbytes);
|
|
}
|
|
|
|
static void process_rewind(struct userdata *u, pa_usec_t now) {
|
|
size_t rewind_nbytes, in_buffer;
|
|
pa_usec_t delay;
|
|
|
|
pa_assert(u);
|
|
|
|
/* Figure out how much we shall rewind and reset the counter */
|
|
rewind_nbytes = u->sink->thread_info.rewind_nbytes;
|
|
u->sink->thread_info.rewind_nbytes = 0;
|
|
|
|
pa_assert(rewind_nbytes > 0);
|
|
pa_log_debug("Requested to rewind %lu bytes.",
|
|
(unsigned long) rewind_nbytes);
|
|
|
|
if (u->timestamp <= now)
|
|
goto do_nothing;
|
|
|
|
delay = u->timestamp - now;
|
|
in_buffer = pa_usec_to_bytes(delay, &u->sink->sample_spec);
|
|
|
|
if (in_buffer <= 0)
|
|
goto do_nothing;
|
|
|
|
if (rewind_nbytes > in_buffer)
|
|
rewind_nbytes = in_buffer;
|
|
|
|
pa_sink_process_rewind(u->sink, rewind_nbytes);
|
|
u->timestamp -= pa_bytes_to_usec(rewind_nbytes, &u->sink->sample_spec);
|
|
u->skip_bytes += rewind_nbytes;
|
|
|
|
pa_log_debug("Rewound %lu bytes.", (unsigned long) rewind_nbytes);
|
|
return;
|
|
|
|
do_nothing:
|
|
|
|
pa_sink_process_rewind(u->sink, 0);
|
|
}
|
|
|
|
struct header {
|
|
int code;
|
|
int bytes;
|
|
};
|
|
|
|
static int get_display_num_from_display(char *display_text) {
|
|
int index;
|
|
int mode;
|
|
int host_index;
|
|
int disp_index;
|
|
int scre_index;
|
|
int display_num;
|
|
char host[256];
|
|
char disp[256];
|
|
char scre[256];
|
|
|
|
memset(host, 0, 256);
|
|
memset(disp, 0, 256);
|
|
memset(scre, 0, 256);
|
|
|
|
index = 0;
|
|
host_index = 0;
|
|
disp_index = 0;
|
|
scre_index = 0;
|
|
mode = 0;
|
|
|
|
while (display_text[index] != 0) {
|
|
if (display_text[index] == ':') {
|
|
mode = 1;
|
|
} else if (display_text[index] == '.') {
|
|
mode = 2;
|
|
} else if (mode == 0) {
|
|
host[host_index] = display_text[index];
|
|
host_index++;
|
|
} else if (mode == 1) {
|
|
disp[disp_index] = display_text[index];
|
|
disp_index++;
|
|
} else if (mode == 2) {
|
|
scre[scre_index] = display_text[index];
|
|
scre_index++;
|
|
}
|
|
index++;
|
|
}
|
|
|
|
host[host_index] = 0;
|
|
disp[disp_index] = 0;
|
|
scre[scre_index] = 0;
|
|
display_num = atoi(disp);
|
|
return display_num;
|
|
}
|
|
|
|
static int data_send(struct userdata *u, pa_memchunk *chunk) {
|
|
char *data;
|
|
int bytes;
|
|
int sent;
|
|
int fd;
|
|
struct header h;
|
|
struct sockaddr_un s;
|
|
|
|
if (u->fd == 0) {
|
|
if (u->failed_connect_time != 0) {
|
|
if (pa_rtclock_now() - u->failed_connect_time < 1000000) {
|
|
return 0;
|
|
}
|
|
}
|
|
fd = socket(PF_LOCAL, SOCK_STREAM, 0);
|
|
memset(&s, 0, sizeof(s));
|
|
s.sun_family = AF_UNIX;
|
|
bytes = sizeof(s.sun_path) - 1;
|
|
snprintf(s.sun_path, bytes, CHANSRV_PORT_STR, u->display_num);
|
|
pa_log("trying to conenct to %s", s.sun_path);
|
|
if (connect(fd, (struct sockaddr *)&s,
|
|
sizeof(struct sockaddr_un)) != 0) {
|
|
u->failed_connect_time = pa_rtclock_now();
|
|
pa_log("Connected failed");
|
|
close(fd);
|
|
return 0;
|
|
}
|
|
u->failed_connect_time = 0;
|
|
pa_log("Connected ok fd %d", fd);
|
|
u->fd = fd;
|
|
}
|
|
|
|
bytes = chunk->length;
|
|
//pa_log("bytes %d", bytes);
|
|
|
|
/* from rewind */
|
|
if (u->skip_bytes > 0) {
|
|
if (bytes > u->skip_bytes) {
|
|
bytes -= u->skip_bytes;
|
|
u->skip_bytes = 0;
|
|
} else {
|
|
u->skip_bytes -= bytes;
|
|
return bytes;
|
|
}
|
|
}
|
|
|
|
h.code = 0;
|
|
h.bytes = bytes + 8;
|
|
if (send(u->fd, &h, 8, 0) != 8) {
|
|
pa_log("data_send: send failed");
|
|
close(u->fd);
|
|
u->fd = 0;
|
|
return 0;
|
|
} else {
|
|
//pa_log("data_send: sent header ok bytes %d", bytes);
|
|
}
|
|
|
|
data = (char*)pa_memblock_acquire(chunk->memblock);
|
|
data += chunk->index;
|
|
sent = send(u->fd, data, bytes, 0);
|
|
pa_memblock_release(chunk->memblock);
|
|
|
|
if (sent != bytes) {
|
|
pa_log("data_send: send failed sent %d bytes %d", sent, bytes);
|
|
close(u->fd);
|
|
u->fd = 0;
|
|
return 0;
|
|
}
|
|
|
|
return sent;
|
|
}
|
|
|
|
static int close_send(struct userdata *u) {
|
|
struct header h;
|
|
|
|
pa_log("close_send:");
|
|
if (u->fd == 0) {
|
|
return 0;
|
|
}
|
|
|
|
h.code = 1;
|
|
h.bytes = 8;
|
|
if (send(u->fd, &h, 8, 0) != 8) {
|
|
pa_log("close_send: send failed");
|
|
close(u->fd);
|
|
u->fd = 0;
|
|
return 0;
|
|
} else {
|
|
//pa_log("close_send: sent header ok");
|
|
}
|
|
|
|
return 8;
|
|
}
|
|
|
|
static void process_render(struct userdata *u, pa_usec_t now) {
|
|
pa_memchunk chunk;
|
|
int request_bytes;
|
|
//int index;
|
|
|
|
pa_assert(u);
|
|
|
|
if (u->got_max_latency) {
|
|
return;
|
|
}
|
|
|
|
//index = 0;
|
|
while (u->timestamp < now + u->block_usec) {
|
|
//index++;
|
|
//if (index > 3) {
|
|
/* used when u->block_usec and
|
|
u->sink->thread_info.max_request get big
|
|
using got_max_latency now */
|
|
// return;
|
|
//}
|
|
request_bytes = u->sink->thread_info.max_request;
|
|
request_bytes = MIN(request_bytes, 16 * 1024);
|
|
pa_sink_render(u->sink, request_bytes, &chunk);
|
|
//pa_log("bytes %d index %d", chunk.length, index);
|
|
data_send(u, &chunk);
|
|
pa_memblock_unref(chunk.memblock);
|
|
u->timestamp += pa_bytes_to_usec(chunk.length, &u->sink->sample_spec);
|
|
}
|
|
}
|
|
|
|
static void thread_func(void *userdata) {
|
|
|
|
struct userdata *u = userdata;
|
|
int ret;
|
|
pa_usec_t now;
|
|
|
|
pa_assert(u);
|
|
|
|
pa_log_debug("Thread starting up");
|
|
|
|
pa_thread_mq_install(&u->thread_mq);
|
|
|
|
u->timestamp = pa_rtclock_now();
|
|
|
|
for (;;) {
|
|
|
|
if (u->sink->thread_info.state == PA_SINK_RUNNING) {
|
|
|
|
now = pa_rtclock_now();
|
|
|
|
if (u->sink->thread_info.rewind_requested) {
|
|
if (u->sink->thread_info.rewind_nbytes > 0) {
|
|
process_rewind(u, now);
|
|
} else {
|
|
pa_sink_process_rewind(u->sink, 0);
|
|
}
|
|
}
|
|
|
|
if (u->timestamp <= now) {
|
|
process_render(u, now);
|
|
}
|
|
|
|
pa_rtpoll_set_timer_absolute(u->rtpoll, u->timestamp);
|
|
|
|
} else {
|
|
pa_rtpoll_set_timer_disabled(u->rtpoll);
|
|
}
|
|
|
|
if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0) {
|
|
goto fail;
|
|
}
|
|
|
|
if (ret == 0) {
|
|
goto finish;
|
|
}
|
|
}
|
|
|
|
fail:
|
|
/* If this was no regular exit from the loop we have to continue
|
|
* processing messages until we received PA_MESSAGE_SHUTDOWN */
|
|
pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core),
|
|
PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0,
|
|
NULL, NULL);
|
|
pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
|
|
|
|
finish:
|
|
pa_log_debug("Thread shutting down");
|
|
}
|
|
|
|
int pa__init(pa_module*m) {
|
|
struct userdata *u = NULL;
|
|
pa_sample_spec ss;
|
|
pa_channel_map map;
|
|
pa_modargs *ma = NULL;
|
|
pa_sink_new_data data;
|
|
size_t nbytes;
|
|
|
|
pa_assert(m);
|
|
|
|
if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
|
|
pa_log("Failed to parse module arguments.");
|
|
goto fail;
|
|
}
|
|
|
|
ss = m->core->default_sample_spec;
|
|
map = m->core->default_channel_map;
|
|
if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map,
|
|
PA_CHANNEL_MAP_DEFAULT) < 0) {
|
|
pa_log("Invalid sample format specification or channel map");
|
|
goto fail;
|
|
}
|
|
|
|
m->userdata = u = pa_xnew0(struct userdata, 1);
|
|
u->core = m->core;
|
|
u->module = m;
|
|
u->rtpoll = pa_rtpoll_new();
|
|
pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll);
|
|
|
|
pa_sink_new_data_init(&data);
|
|
data.driver = __FILE__;
|
|
data.module = m;
|
|
pa_sink_new_data_set_name(&data,
|
|
pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME));
|
|
pa_sink_new_data_set_sample_spec(&data, &ss);
|
|
pa_sink_new_data_set_channel_map(&data, &map);
|
|
pa_proplist_sets(data.proplist, PA_PROP_DEVICE_DESCRIPTION, "xrdp sink");
|
|
pa_proplist_sets(data.proplist, PA_PROP_DEVICE_CLASS, "abstract");
|
|
|
|
if (pa_modargs_get_proplist(ma, "sink_properties", data.proplist,
|
|
PA_UPDATE_REPLACE) < 0) {
|
|
pa_log("Invalid properties");
|
|
pa_sink_new_data_done(&data);
|
|
goto fail;
|
|
}
|
|
|
|
u->sink = pa_sink_new(m->core, &data,
|
|
PA_SINK_LATENCY | PA_SINK_DYNAMIC_LATENCY);
|
|
pa_sink_new_data_done(&data);
|
|
|
|
if (!u->sink) {
|
|
pa_log("Failed to create sink object.");
|
|
goto fail;
|
|
}
|
|
|
|
u->sink->parent.process_msg = sink_process_msg;
|
|
u->sink->update_requested_latency = sink_update_requested_latency_cb;
|
|
u->sink->userdata = u;
|
|
|
|
pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
|
|
pa_sink_set_rtpoll(u->sink, u->rtpoll);
|
|
|
|
u->block_usec = BLOCK_USEC;
|
|
nbytes = pa_usec_to_bytes(u->block_usec, &u->sink->sample_spec);
|
|
pa_sink_set_max_rewind(u->sink, nbytes);
|
|
pa_sink_set_max_request(u->sink, nbytes);
|
|
|
|
u->display_num = get_display_num_from_display(getenv("DISPLAY"));
|
|
|
|
#if defined(PA_CHECK_VERSION)
|
|
#if PA_CHECK_VERSION(0, 9, 22)
|
|
if (!(u->thread = pa_thread_new("xrdp-sink", thread_func, u))) {
|
|
#else
|
|
if (!(u->thread = pa_thread_new(thread_func, u))) {
|
|
#endif
|
|
#else
|
|
if (!(u->thread = pa_thread_new(thread_func, u))) {
|
|
#endif
|
|
pa_log("Failed to create thread.");
|
|
goto fail;
|
|
}
|
|
|
|
pa_sink_put(u->sink);
|
|
|
|
pa_modargs_free(ma);
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
if (ma) {
|
|
pa_modargs_free(ma);
|
|
}
|
|
|
|
pa__done(m);
|
|
|
|
return -1;
|
|
}
|
|
|
|
int pa__get_n_used(pa_module *m) {
|
|
struct userdata *u;
|
|
|
|
pa_assert(m);
|
|
pa_assert_se(u = m->userdata);
|
|
|
|
return pa_sink_linked_by(u->sink);
|
|
}
|
|
|
|
void pa__done(pa_module*m) {
|
|
struct userdata *u;
|
|
|
|
pa_assert(m);
|
|
|
|
if (!(u = m->userdata)) {
|
|
return;
|
|
}
|
|
|
|
if (u->sink) {
|
|
pa_sink_unlink(u->sink);
|
|
}
|
|
|
|
if (u->thread) {
|
|
pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN,
|
|
NULL, 0, NULL);
|
|
pa_thread_free(u->thread);
|
|
}
|
|
|
|
pa_thread_mq_done(&u->thread_mq);
|
|
|
|
if (u->sink) {
|
|
pa_sink_unref(u->sink);
|
|
}
|
|
|
|
if (u->rtpoll) {
|
|
pa_rtpoll_free(u->rtpoll);
|
|
}
|
|
|
|
pa_xfree(u);
|
|
}
|