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@ -0,0 +1,460 @@ |
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/*** |
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This file is part of PulseAudio. |
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Copyright 2004-2008 Lennart Poettering |
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Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies). |
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PulseAudio 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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PulseAudio 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 PulseAudio; 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 <stdlib.h> |
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#include <stdio.h> |
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#include <errno.h> |
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#include <unistd.h> |
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#include <sys/socket.h> |
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#include <sys/un.h> |
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#include <pulse/rtclock.h> |
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#include <pulse/timeval.h> |
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#include <pulse/xmalloc.h> |
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#include <pulsecore/core-util.h> |
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#include <pulsecore/log.h> |
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#include <pulsecore/macro.h> |
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#include <pulsecore/modargs.h> |
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#include <pulsecore/module.h> |
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#include <pulsecore/rtpoll.h> |
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#include <pulsecore/source.h> |
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#include <pulsecore/thread-mq.h> |
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#include <pulsecore/thread.h> |
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#include "module-xrdp-source-symdef.h" |
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PA_MODULE_AUTHOR("Laxmikant Rashinkar"); |
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PA_MODULE_DESCRIPTION("xrdp source"); |
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PA_MODULE_VERSION(PACKAGE_VERSION); |
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PA_MODULE_LOAD_ONCE(FALSE); |
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PA_MODULE_USAGE( |
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"format=<sample format> " |
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"channels=<number of channels> " |
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"rate=<sample rate> " |
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"source_name=<name of source> " |
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"channel_map=<channel map> " |
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"description=<description for the source> " |
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"latency_time=<latency time in ms>"); |
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#define DEFAULT_SOURCE_NAME "xrdp" |
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#define DEFAULT_LATENCY_TIME 10 |
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#define MAX_LATENCY_USEC (PA_USEC_PER_SEC * 2) |
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#define CHANSRV_PORT_STR "/tmp/.xrdp/xrdp_chansrv_audio_in_socket_%d" |
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struct userdata { |
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pa_core *core; |
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pa_module *module; |
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pa_source *source; |
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pa_thread *thread; |
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pa_thread_mq thread_mq; |
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pa_rtpoll *rtpoll; |
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size_t block_size; |
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pa_usec_t block_usec; |
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pa_usec_t timestamp; |
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pa_usec_t latency_time; |
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/* xrdp stuff */ |
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int fd; /* UDS connection to xrdp chansrv */ |
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int display_num; /* X display number */ |
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int want_src_data; |
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}; |
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static const char* const valid_modargs[] = { |
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"rate", |
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"format", |
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"channels", |
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"source_name", |
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"channel_map", |
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"description", |
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"latency_time", |
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NULL |
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}; |
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static int get_display_num_from_display(char *display_text) ; |
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static int source_process_msg(pa_msgobject *o, int code, void *data, |
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int64_t offset, pa_memchunk *chunk) { |
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struct userdata *u = PA_SOURCE(o)->userdata; |
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switch (code) { |
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case PA_SOURCE_MESSAGE_SET_STATE: |
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if (PA_PTR_TO_UINT(data) == PA_SOURCE_RUNNING) |
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u->timestamp = pa_rtclock_now(); |
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break; |
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case PA_SOURCE_MESSAGE_GET_LATENCY: { |
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pa_usec_t now; |
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now = pa_rtclock_now(); |
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*((pa_usec_t*) data) = u->timestamp > now ? u->timestamp - now : 0; |
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return 0; |
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} |
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} |
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return pa_source_process_msg(o, code, data, offset, chunk); |
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} |
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static void source_update_requested_latency_cb(pa_source *s) { |
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struct userdata *u; |
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pa_source_assert_ref(s); |
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u = s->userdata; |
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pa_assert(u); |
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u->block_usec = pa_source_get_requested_latency_within_thread(s); |
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} |
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static int data_get(struct userdata *u, pa_memchunk *chunk) { |
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int fd; |
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int bytes; |
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struct sockaddr_un s; |
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char *data; |
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char buf[11]; |
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unsigned char ubuf[10]; |
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if (u->fd == 0) { |
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/* connect to xrdp unix domain socket */ |
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fd = socket(PF_LOCAL, SOCK_STREAM, 0); |
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memset(&s, 0, sizeof(s)); |
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s.sun_family = AF_UNIX; |
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bytes = sizeof(s.sun_path) - 1; |
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snprintf(s.sun_path, bytes, CHANSRV_PORT_STR, u->display_num); |
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pa_log_debug("Trying to connect to %s", s.sun_path); |
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if (connect(fd, (struct sockaddr *) &s, sizeof(struct sockaddr_un)) != 0) { |
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pa_log_debug("Connect failed"); |
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close(fd); |
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return -1; |
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} |
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pa_log("Connected ok, fd=%d", fd); |
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pa_log_debug("###### connected to xrdp audio_in socket"); |
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u->fd = fd; |
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} |
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data = (char *) pa_memblock_acquire(chunk->memblock); |
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if (!u->want_src_data) { |
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char buf[12]; |
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buf[0] = 0; |
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buf[1] = 0; |
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buf[2] = 0; |
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buf[3] = 0; |
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buf[4] = 11; |
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buf[5] = 0; |
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buf[6] = 0; |
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buf[7] = 0; |
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buf[8] = 1; |
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buf[9] = 0; |
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buf[10] = 0; |
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send(u->fd, buf, 11, 0); |
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u->want_src_data = 1; |
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pa_log_debug("###### started recording"); |
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} |
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/* ask for more data */ |
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buf[0] = 0; |
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buf[1] = 0; |
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buf[2] = 0; |
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buf[3] = 0; |
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buf[4] = 11; |
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buf[5] = 0; |
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buf[6] = 0; |
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buf[7] = 0; |
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buf[8] = 3; |
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buf[9] = (unsigned char) chunk->length; |
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buf[10] = (unsigned char) ((chunk->length >> 8) & 0xff); |
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send(u->fd, buf, 11, 0); |
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/* read length of data available */ |
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recv(u->fd, ubuf, 2, 0); |
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bytes = ((ubuf[1] << 8) & 0xff00) | (ubuf[0] & 0xff); |
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if (bytes == 0) { |
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pa_memblock_release(chunk->memblock); |
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return 0; |
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} |
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/* get data */ |
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bytes = recv(u->fd, data, bytes, 0); |
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pa_memblock_release(chunk->memblock); |
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return bytes; |
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} |
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static void thread_func(void *userdata) { |
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struct userdata *u = userdata; |
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pa_assert(u); |
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pa_thread_mq_install(&u->thread_mq); |
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u->timestamp = pa_rtclock_now(); |
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for (;;) { |
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int ret; |
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/* Generate some null data */ |
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if (u->source->thread_info.state == PA_SOURCE_RUNNING) { |
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pa_usec_t now; |
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pa_memchunk chunk; |
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now = pa_rtclock_now(); |
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if ((chunk.length = pa_usec_to_bytes(now - u->timestamp, &u->source->sample_spec)) > 0) { |
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chunk.memblock = pa_memblock_new(u->core->mempool, (size_t) -1); /* or chunk.length? */ |
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chunk.index = 0; |
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data_get(u, &chunk); |
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pa_source_post(u->source, &chunk); |
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pa_memblock_unref(chunk.memblock); |
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u->timestamp = now; |
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} |
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pa_rtpoll_set_timer_absolute(u->rtpoll, u->timestamp + u->latency_time * PA_USEC_PER_MSEC); |
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} else { |
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if (u->want_src_data) |
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{ |
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/* we dont want source data anymore */ |
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char buf[12]; |
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buf[0] = 0; |
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buf[1] = 0; |
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buf[2] = 0; |
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buf[3] = 0; |
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buf[4] = 11; |
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buf[5] = 0; |
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buf[6] = 0; |
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buf[7] = 0; |
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buf[8] = 2; |
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buf[9] = 0; |
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buf[10] = 0; |
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send(u->fd, buf, 11, 0); |
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u->want_src_data = 0; |
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pa_log_debug("###### stopped recording"); |
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} |
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pa_rtpoll_set_timer_disabled(u->rtpoll); |
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} |
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/* Hmm, nothing to do. Let's sleep */ |
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if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0) |
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goto fail; |
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if (ret == 0) |
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goto finish; |
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} |
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fail: |
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/* If this was no regular exit from the loop we have to continue |
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* processing messages until we received PA_MESSAGE_SHUTDOWN */ |
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pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL); |
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pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN); |
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finish: |
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pa_log_debug("###### thread shutting down"); |
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} |
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int pa__init(pa_module *m) { |
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struct userdata *u = NULL; |
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pa_sample_spec ss; |
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pa_channel_map map; |
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pa_modargs *ma = NULL; |
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pa_source_new_data data; |
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uint32_t latency_time = DEFAULT_LATENCY_TIME; |
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pa_assert(m); |
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if (!(ma = pa_modargs_new(m->argument, valid_modargs))) { |
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pa_log("Failed to parse module arguments."); |
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goto fail; |
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} |
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#if 0 |
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ss = m->core->default_sample_spec; |
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#else |
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ss.format = PA_SAMPLE_S16LE; |
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ss.rate = 22050; |
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ss.channels = 2; |
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#endif |
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map = m->core->default_channel_map; |
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if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_DEFAULT) < 0) { |
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pa_log("Invalid sample format specification or channel map"); |
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goto fail; |
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} |
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m->userdata = u = pa_xnew0(struct userdata, 1); |
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u->core = m->core; |
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u->module = m; |
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u->rtpoll = pa_rtpoll_new(); |
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pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll); |
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pa_source_new_data_init(&data); |
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data.driver = __FILE__; |
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data.module = m; |
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pa_source_new_data_set_name(&data, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME)); |
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pa_source_new_data_set_sample_spec(&data, &ss); |
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pa_source_new_data_set_channel_map(&data, &map); |
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//pa_proplist_sets(data.proplist, PA_PROP_DEVICE_DESCRIPTION, pa_modargs_get_value(ma, "description", "Null Input")); |
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pa_proplist_sets(data.proplist, PA_PROP_DEVICE_DESCRIPTION, pa_modargs_get_value(ma, "description", "xrdp Input")); |
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pa_proplist_sets(data.proplist, PA_PROP_DEVICE_CLASS, "abstract"); |
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u->source = pa_source_new(m->core, &data, PA_SOURCE_LATENCY | PA_SOURCE_DYNAMIC_LATENCY); |
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pa_source_new_data_done(&data); |
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if (!u->source) { |
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pa_log("Failed to create source object."); |
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goto fail; |
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} |
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u->latency_time = DEFAULT_LATENCY_TIME; |
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if (pa_modargs_get_value_u32(ma, "latency_time", &latency_time) < 0) { |
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pa_log("Failed to parse latency_time value."); |
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goto fail; |
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} |
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u->latency_time = latency_time; |
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u->source->parent.process_msg = source_process_msg; |
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u->source->update_requested_latency = source_update_requested_latency_cb; |
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u->source->userdata = u; |
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pa_source_set_asyncmsgq(u->source, u->thread_mq.inq); |
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pa_source_set_rtpoll(u->source, u->rtpoll); |
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pa_source_set_latency_range(u->source, 0, MAX_LATENCY_USEC); |
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u->block_usec = u->source->thread_info.max_latency; |
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u->source->thread_info.max_rewind = |
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pa_usec_to_bytes(u->block_usec, &u->source->sample_spec); |
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if (!(u->thread = pa_thread_new("null-source", thread_func, u))) { |
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pa_log("Failed to create thread."); |
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goto fail; |
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} |
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pa_source_put(u->source); |
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pa_modargs_free(ma); |
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u->display_num = get_display_num_from_display(getenv("DISPLAY")); |
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return 0; |
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fail: |
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if (ma) |
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pa_modargs_free(ma); |
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pa__done(m); |
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return -1; |
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} |
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void pa__done(pa_module*m) { |
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struct userdata *u; |
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pa_assert(m); |
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if (!(u = m->userdata)) |
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return; |
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if (u->source) |
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pa_source_unlink(u->source); |
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if (u->thread) { |
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pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL); |
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pa_thread_free(u->thread); |
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} |
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pa_thread_mq_done(&u->thread_mq); |
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if (u->source) |
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pa_source_unref(u->source); |
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|
|
|
|
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; |
|
|
|
} |