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.
461 lines
12 KiB
461 lines
12 KiB
/***
|
|
This file is part of PulseAudio.
|
|
|
|
Copyright 2004-2008 Lennart Poettering
|
|
Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
|
|
|
|
PulseAudio is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU Lesser General Public License as published
|
|
by the Free Software Foundation; either version 2 of the License,
|
|
or (at your option) any later version.
|
|
|
|
PulseAudio is distributed in the hope that it will be useful, but
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with PulseAudio; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
|
|
USA.
|
|
***/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include <config.h>
|
|
#endif
|
|
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/un.h>
|
|
|
|
#include <pulse/rtclock.h>
|
|
#include <pulse/timeval.h>
|
|
#include <pulse/xmalloc.h>
|
|
|
|
#include <pulsecore/core-util.h>
|
|
#include <pulsecore/log.h>
|
|
#include <pulsecore/macro.h>
|
|
#include <pulsecore/modargs.h>
|
|
#include <pulsecore/module.h>
|
|
#include <pulsecore/rtpoll.h>
|
|
#include <pulsecore/source.h>
|
|
#include <pulsecore/thread-mq.h>
|
|
#include <pulsecore/thread.h>
|
|
|
|
#include "module-xrdp-source-symdef.h"
|
|
|
|
PA_MODULE_AUTHOR("Laxmikant Rashinkar");
|
|
PA_MODULE_DESCRIPTION("xrdp source");
|
|
PA_MODULE_VERSION(PACKAGE_VERSION);
|
|
PA_MODULE_LOAD_ONCE(FALSE);
|
|
PA_MODULE_USAGE(
|
|
"format=<sample format> "
|
|
"channels=<number of channels> "
|
|
"rate=<sample rate> "
|
|
"source_name=<name of source> "
|
|
"channel_map=<channel map> "
|
|
"description=<description for the source> "
|
|
"latency_time=<latency time in ms>");
|
|
|
|
#define DEFAULT_SOURCE_NAME "xrdp-source"
|
|
#define DEFAULT_LATENCY_TIME 10
|
|
#define MAX_LATENCY_USEC (PA_USEC_PER_SEC * 2)
|
|
#define CHANSRV_PORT_STR "/tmp/.xrdp/xrdp_chansrv_audio_in_socket_%d"
|
|
|
|
struct userdata {
|
|
pa_core *core;
|
|
pa_module *module;
|
|
pa_source *source;
|
|
|
|
pa_thread *thread;
|
|
pa_thread_mq thread_mq;
|
|
pa_rtpoll *rtpoll;
|
|
|
|
size_t block_size;
|
|
|
|
pa_usec_t block_usec;
|
|
pa_usec_t timestamp;
|
|
pa_usec_t latency_time;
|
|
|
|
/* xrdp stuff */
|
|
int fd; /* UDS connection to xrdp chansrv */
|
|
int display_num; /* X display number */
|
|
int want_src_data;
|
|
};
|
|
|
|
static const char* const valid_modargs[] = {
|
|
"rate",
|
|
"format",
|
|
"channels",
|
|
"source_name",
|
|
"channel_map",
|
|
"description",
|
|
"latency_time",
|
|
NULL
|
|
};
|
|
|
|
static int get_display_num_from_display(char *display_text) ;
|
|
|
|
static int source_process_msg(pa_msgobject *o, int code, void *data,
|
|
int64_t offset, pa_memchunk *chunk) {
|
|
|
|
struct userdata *u = PA_SOURCE(o)->userdata;
|
|
|
|
switch (code) {
|
|
case PA_SOURCE_MESSAGE_SET_STATE:
|
|
|
|
if (PA_PTR_TO_UINT(data) == PA_SOURCE_RUNNING)
|
|
u->timestamp = pa_rtclock_now();
|
|
|
|
break;
|
|
|
|
case PA_SOURCE_MESSAGE_GET_LATENCY: {
|
|
pa_usec_t now;
|
|
|
|
now = pa_rtclock_now();
|
|
*((pa_usec_t*) data) = u->timestamp > now ? u->timestamp - now : 0;
|
|
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return pa_source_process_msg(o, code, data, offset, chunk);
|
|
}
|
|
|
|
static void source_update_requested_latency_cb(pa_source *s) {
|
|
struct userdata *u;
|
|
|
|
pa_source_assert_ref(s);
|
|
u = s->userdata;
|
|
pa_assert(u);
|
|
|
|
u->block_usec = pa_source_get_requested_latency_within_thread(s);
|
|
}
|
|
|
|
static int data_get(struct userdata *u, pa_memchunk *chunk) {
|
|
|
|
int fd;
|
|
int bytes;
|
|
struct sockaddr_un s;
|
|
char *data;
|
|
char buf[11];
|
|
unsigned char ubuf[10];
|
|
|
|
if (u->fd == 0) {
|
|
/* connect to xrdp unix domain socket */
|
|
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_debug("Trying to connect to %s", s.sun_path);
|
|
|
|
if (connect(fd, (struct sockaddr *) &s, sizeof(struct sockaddr_un)) != 0) {
|
|
pa_log_debug("Connect failed");
|
|
close(fd);
|
|
return -1;
|
|
}
|
|
|
|
pa_log("Connected ok, fd=%d", fd);
|
|
pa_log_debug("###### connected to xrdp audio_in socket");
|
|
u->fd = fd;
|
|
}
|
|
|
|
data = (char *) pa_memblock_acquire(chunk->memblock);
|
|
|
|
if (!u->want_src_data) {
|
|
char buf[12];
|
|
|
|
buf[0] = 0;
|
|
buf[1] = 0;
|
|
buf[2] = 0;
|
|
buf[3] = 0;
|
|
buf[4] = 11;
|
|
buf[5] = 0;
|
|
buf[6] = 0;
|
|
buf[7] = 0;
|
|
buf[8] = 1;
|
|
buf[9] = 0;
|
|
buf[10] = 0;
|
|
|
|
send(u->fd, buf, 11, 0);
|
|
u->want_src_data = 1;
|
|
pa_log_debug("###### started recording");
|
|
}
|
|
|
|
/* ask for more data */
|
|
buf[0] = 0;
|
|
buf[1] = 0;
|
|
buf[2] = 0;
|
|
buf[3] = 0;
|
|
buf[4] = 11;
|
|
buf[5] = 0;
|
|
buf[6] = 0;
|
|
buf[7] = 0;
|
|
buf[8] = 3;
|
|
buf[9] = (unsigned char) chunk->length;
|
|
buf[10] = (unsigned char) ((chunk->length >> 8) & 0xff);
|
|
|
|
send(u->fd, buf, 11, 0);
|
|
|
|
/* read length of data available */
|
|
recv(u->fd, ubuf, 2, 0);
|
|
bytes = ((ubuf[1] << 8) & 0xff00) | (ubuf[0] & 0xff);
|
|
|
|
if (bytes == 0) {
|
|
pa_memblock_release(chunk->memblock);
|
|
return 0;
|
|
}
|
|
|
|
/* get data */
|
|
bytes = recv(u->fd, data, bytes, 0);
|
|
|
|
pa_memblock_release(chunk->memblock);
|
|
|
|
return bytes;
|
|
}
|
|
|
|
static void thread_func(void *userdata) {
|
|
struct userdata *u = userdata;
|
|
|
|
pa_assert(u);
|
|
pa_thread_mq_install(&u->thread_mq);
|
|
u->timestamp = pa_rtclock_now();
|
|
|
|
for (;;) {
|
|
int ret;
|
|
|
|
/* Generate some null data */
|
|
if (u->source->thread_info.state == PA_SOURCE_RUNNING) {
|
|
pa_usec_t now;
|
|
pa_memchunk chunk;
|
|
|
|
now = pa_rtclock_now();
|
|
|
|
if ((chunk.length = pa_usec_to_bytes(now - u->timestamp, &u->source->sample_spec)) > 0) {
|
|
chunk.memblock = pa_memblock_new(u->core->mempool, (size_t) -1); /* or chunk.length? */
|
|
chunk.index = 0;
|
|
data_get(u, &chunk);
|
|
pa_source_post(u->source, &chunk);
|
|
pa_memblock_unref(chunk.memblock);
|
|
u->timestamp = now;
|
|
}
|
|
|
|
pa_rtpoll_set_timer_absolute(u->rtpoll, u->timestamp + u->latency_time * PA_USEC_PER_MSEC);
|
|
} else {
|
|
if (u->want_src_data)
|
|
{
|
|
/* we dont want source data anymore */
|
|
char buf[12];
|
|
|
|
buf[0] = 0;
|
|
buf[1] = 0;
|
|
buf[2] = 0;
|
|
buf[3] = 0;
|
|
buf[4] = 11;
|
|
buf[5] = 0;
|
|
buf[6] = 0;
|
|
buf[7] = 0;
|
|
buf[8] = 2;
|
|
buf[9] = 0;
|
|
buf[10] = 0;
|
|
|
|
send(u->fd, buf, 11, 0);
|
|
u->want_src_data = 0;
|
|
pa_log_debug("###### stopped recording");
|
|
}
|
|
pa_rtpoll_set_timer_disabled(u->rtpoll);
|
|
}
|
|
|
|
/* Hmm, nothing to do. Let's sleep */
|
|
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_source_new_data data;
|
|
uint32_t latency_time = DEFAULT_LATENCY_TIME;
|
|
|
|
pa_assert(m);
|
|
|
|
if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
|
|
pa_log("Failed to parse module arguments.");
|
|
goto fail;
|
|
}
|
|
|
|
#if 0
|
|
ss = m->core->default_sample_spec;
|
|
#else
|
|
ss.format = PA_SAMPLE_S16LE;
|
|
ss.rate = 22050;
|
|
ss.channels = 2;
|
|
#endif
|
|
|
|
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_source_new_data_init(&data);
|
|
data.driver = __FILE__;
|
|
data.module = m;
|
|
pa_source_new_data_set_name(&data, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME));
|
|
pa_source_new_data_set_sample_spec(&data, &ss);
|
|
pa_source_new_data_set_channel_map(&data, &map);
|
|
//pa_proplist_sets(data.proplist, PA_PROP_DEVICE_DESCRIPTION, pa_modargs_get_value(ma, "description", "Null Input"));
|
|
pa_proplist_sets(data.proplist, PA_PROP_DEVICE_DESCRIPTION, pa_modargs_get_value(ma, "description", "xrdp Input"));
|
|
pa_proplist_sets(data.proplist, PA_PROP_DEVICE_CLASS, "abstract");
|
|
|
|
u->source = pa_source_new(m->core, &data, PA_SOURCE_LATENCY | PA_SOURCE_DYNAMIC_LATENCY);
|
|
pa_source_new_data_done(&data);
|
|
|
|
if (!u->source) {
|
|
pa_log("Failed to create source object.");
|
|
goto fail;
|
|
}
|
|
|
|
u->latency_time = DEFAULT_LATENCY_TIME;
|
|
if (pa_modargs_get_value_u32(ma, "latency_time", &latency_time) < 0) {
|
|
pa_log("Failed to parse latency_time value.");
|
|
goto fail;
|
|
}
|
|
u->latency_time = latency_time;
|
|
|
|
u->source->parent.process_msg = source_process_msg;
|
|
u->source->update_requested_latency = source_update_requested_latency_cb;
|
|
u->source->userdata = u;
|
|
|
|
pa_source_set_asyncmsgq(u->source, u->thread_mq.inq);
|
|
pa_source_set_rtpoll(u->source, u->rtpoll);
|
|
|
|
pa_source_set_latency_range(u->source, 0, MAX_LATENCY_USEC);
|
|
u->block_usec = u->source->thread_info.max_latency;
|
|
|
|
u->source->thread_info.max_rewind =
|
|
pa_usec_to_bytes(u->block_usec, &u->source->sample_spec);
|
|
|
|
if (!(u->thread = pa_thread_new("null-source", thread_func, u))) {
|
|
pa_log("Failed to create thread.");
|
|
goto fail;
|
|
}
|
|
|
|
pa_source_put(u->source);
|
|
|
|
pa_modargs_free(ma);
|
|
|
|
u->display_num = get_display_num_from_display(getenv("DISPLAY"));
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
if (ma)
|
|
pa_modargs_free(ma);
|
|
|
|
pa__done(m);
|
|
|
|
return -1;
|
|
}
|
|
|
|
void pa__done(pa_module*m) {
|
|
struct userdata *u;
|
|
|
|
pa_assert(m);
|
|
|
|
if (!(u = m->userdata))
|
|
return;
|
|
|
|
if (u->source)
|
|
pa_source_unlink(u->source);
|
|
|
|
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->source)
|
|
pa_source_unref(u->source);
|
|
|
|
if (u->rtpoll)
|
|
pa_rtpoll_free(u->rtpoll);
|
|
|
|
pa_xfree(u);
|
|
}
|
|
|
|
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];
|
|
|
|
if (display_text == NULL) {
|
|
return 0;
|
|
}
|
|
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;
|
|
}
|