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Diffstat (limited to 'sesman/chansrv/pulse/module-xrdp-source.c')
-rw-r--r--sesman/chansrv/pulse/module-xrdp-source.c460
1 files changed, 460 insertions, 0 deletions
diff --git a/sesman/chansrv/pulse/module-xrdp-source.c b/sesman/chansrv/pulse/module-xrdp-source.c
new file mode 100644
index 00000000..2d7ec4fa
--- /dev/null
+++ b/sesman/chansrv/pulse/module-xrdp-source.c
@@ -0,0 +1,460 @@
+/***
+ 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;
+}
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