From 6570620cc3717eb82acd19788538fda3786c7b99 Mon Sep 17 00:00:00 2001 From: Colin Guthrie Date: Thu, 1 May 2008 23:51:45 +0000 Subject: Start the raop sink. It's based on pipe sink and isn't anywhere near finished. It does however compile. git-svn-id: file:///home/lennart/svn/public/pulseaudio/branches/coling@2335 fefdeb5f-60dc-0310-8127-8f9354f1896f --- src/modules/module-raop-sink.c | 417 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 417 insertions(+) create mode 100644 src/modules/module-raop-sink.c (limited to 'src/modules/module-raop-sink.c') diff --git a/src/modules/module-raop-sink.c b/src/modules/module-raop-sink.c new file mode 100644 index 00000000..ad10d78f --- /dev/null +++ b/src/modules/module-raop-sink.c @@ -0,0 +1,417 @@ +/* $Id$ */ + +/*** + This file is part of PulseAudio. + + Copyright 2004-2006 Lennart Poettering + Copyright 2008 Colin Guthrie + + 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 +#endif + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "rtp.h" +#include "sdp.h" +#include "sap.h" +#include "rtsp.h" +#include "base64.h" + + +#include "module-raop-sink-symdef.h" + +#define JACK_STATUS_DISCONNECTED 0 +#define JACK_STATUS_CONNECTED 1 + +#define JACK_TYPE_ANALOG 0 +#define JACK_TYPE_DIGITAL 1 + +#define VOLUME_DEF -30 +#define VOLUME_MIN -144 +#define VOLUME_MAX 0 + + +PA_MODULE_AUTHOR("Colin Guthrie"); +PA_MODULE_DESCRIPTION("RAOP Sink (Apple Airport)"); +PA_MODULE_VERSION(PACKAGE_VERSION); +PA_MODULE_LOAD_ONCE(FALSE); +PA_MODULE_USAGE( + "server=
" + "sink_name= " + "format= " + "channels= " + "rate=" + "channel_map="); + +#define DEFAULT_SINK_NAME "airtunes" +#define AES_CHUNKSIZE 16 + +struct userdata { + pa_core *core; + pa_module *module; + pa_sink *sink; + + pa_thread *thread; + pa_thread_mq thread_mq; + pa_rtpoll *rtpoll; + + char *server_name; + + // Encryption Related bits + AES_KEY aes; + uint8_t aes_iv[AES_CHUNKSIZE]; // initialization vector for aes-cbc + uint8_t aes_nv[AES_CHUNKSIZE]; // next vector for aes-cbc + uint8_t aes_key[AES_CHUNKSIZE]; // key for aes-cbc + + pa_rtsp_context *rtsp; + //pa_socket_client *client; + pa_memchunk memchunk; + + pa_rtpoll_item *rtpoll_item; +}; + +static const char* const valid_modargs[] = { + "server", + "rate", + "format", + "channels", + "sink_name", + "channel_map", + NULL +}; + +static int rsa_encrypt(uint8_t *text, int len, uint8_t *res) { + char n[] = + "59dE8qLieItsH1WgjrcFRKj6eUWqi+bGLOX1HL3U3GhC/j0Qg90u3sG/1CUtwC" + "5vOYvfDmFI6oSFXi5ELabWJmT2dKHzBJKa3k9ok+8t9ucRqMd6DZHJ2YCCLlDR" + "KSKv6kDqnw4UwPdpOMXziC/AMj3Z/lUVX1G7WSHCAWKf1zNS1eLvqr+boEjXuB" + "OitnZ/bDzPHrTOZz0Dew0uowxf/+sG+NCK3eQJVxqcaJ/vEHKIVd2M+5qL71yJ" + "Q+87X6oV3eaYvt3zWZYD6z5vYTcrtij2VZ9Zmni/UAaHqn9JdsBWLUEpVviYnh" + "imNVvYFZeCXg/IdTQ+x4IRdiXNv5hEew=="; + char e[] = "AQAB"; + uint8_t modules[256]; + uint8_t exponent[8]; + int size; + RSA *rsa; + + rsa = RSA_new(); + size = pa_base64_decode(n, modules); + rsa->n = BN_bin2bn(modules, size, NULL); + size = pa_base64_decode(e, exponent); + rsa->e = BN_bin2bn(exponent, size, NULL); + + size = RSA_public_encrypt(len, text, res, rsa, RSA_PKCS1_OAEP_PADDING); + RSA_free(rsa); + return size; +} + +static int aes_encrypt(struct userdata *u, uint8_t *data, int size) +{ + uint8_t *buf; + int i=0, j; + + pa_assert(u); + + memcpy(u->aes_nv, u->aes_iv, AES_CHUNKSIZE); + while (i+AES_CHUNKSIZE <= size) { + buf = data + i; + for (j=0; jaes_nv[j]; + + AES_encrypt(buf, buf, &u->aes); + memcpy(u->aes_nv, buf, AES_CHUNKSIZE); + i += AES_CHUNKSIZE; + } + return i; +} + +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; + + switch (code) { + + case PA_SINK_MESSAGE_GET_LATENCY: { + size_t n = 0; + //int l; + +#ifdef TIOCINQ + /* + if (ioctl(u->fd, TIOCINQ, &l) >= 0 && l > 0) + n = (size_t) l; + */ +#endif + + n += u->memchunk.length; + + *((pa_usec_t*) data) = pa_bytes_to_usec(n, &u->sink->sample_spec); + break; + } + } + + return pa_sink_process_msg(o, code, data, offset, chunk); +} + +static void thread_func(void *userdata) { + struct userdata *u = userdata; + //int write_type = 0; + + pa_assert(u); + + pa_log_debug("Thread starting up"); + + pa_thread_mq_install(&u->thread_mq); + pa_rtpoll_install(u->rtpoll); + + for (;;) { + struct pollfd *pollfd; + int ret; + + pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL); + + /* Render some data and write it to the fifo */ + if (u->sink->thread_info.state == PA_SINK_RUNNING && pollfd->revents) { + ssize_t l; + void *p; + + if (u->memchunk.length <= 0) + pa_sink_render(u->sink, PIPE_BUF, &u->memchunk); + + pa_assert(u->memchunk.length > 0); + + p = pa_memblock_acquire(u->memchunk.memblock); + //l = pa_write(u->fd, (uint8_t*) p + u->memchunk.index, u->memchunk.length, &write_type); + // Fake the length of the "write". + l = u->memchunk.length; + pa_memblock_release(u->memchunk.memblock); + + pa_assert(l != 0); + + if (l < 0) { + + if (errno == EINTR) + continue; + else if (errno != EAGAIN) { + pa_log("Failed to write data to FIFO: %s", pa_cstrerror(errno)); + goto fail; + } + + } else { + + u->memchunk.index += l; + u->memchunk.length -= l; + + if (u->memchunk.length <= 0) { + pa_memblock_unref(u->memchunk.memblock); + pa_memchunk_reset(&u->memchunk); + } + + pollfd->revents = 0; + } + } + + /* Hmm, nothing to do. Let's sleep */ + pollfd->events = u->sink->thread_info.state == PA_SINK_RUNNING ? POLLOUT : 0; + + if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0) + goto fail; + + if (ret == 0) + goto finish; + + pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL); + + if (pollfd->revents & ~POLLOUT) { + pa_log("FIFO shutdown."); + goto fail; + } + } + +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; + //struct stat st; + pa_sample_spec ss; + pa_channel_map map; + pa_modargs *ma; + char *t; + struct pollfd *pollfd; + + 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; + 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; + } + + u = pa_xnew0(struct userdata, 1); + u->core = m->core; + u->module = m; + m->userdata = u; + + // Initialise the AES encryption system + pa_random_seed(); + pa_random(u->aes_iv, sizeof(u->aes_iv)); + pa_random(u->aes_key, sizeof(u->aes_key)); + memcpy(u->aes_nv, u->aes_iv, sizeof(u->aes_nv)); + AES_set_encrypt_key(u->aes_key, 128, &u->aes); + + pa_memchunk_reset(&u->memchunk); + pa_thread_mq_init(&u->thread_mq, m->core->mainloop); + u->rtpoll = pa_rtpoll_new(); + pa_rtpoll_item_new_asyncmsgq(u->rtpoll, PA_RTPOLL_EARLY, u->thread_mq.inq); + + u->server_name = pa_xstrdup(pa_modargs_get_value(ma, "server", NULL)); + + // Open a connection to the server... this is just to connect and test.... + /* + mkfifo(u->filename, 0666); + if ((u->fd = open(u->filename, O_RDWR|O_NOCTTY)) < 0) { + pa_log("open('%s'): %s", u->filename, pa_cstrerror(errno)); + goto fail; + } + + pa_make_fd_cloexec(u->fd); + pa_make_fd_nonblock(u->fd); + + if (fstat(u->fd, &st) < 0) { + pa_log("fstat('%s'): %s", u->filename, pa_cstrerror(errno)); + goto fail; + } + + if (!S_ISFIFO(st.st_mode)) { + pa_log("'%s' is not a FIFO.", u->filename); + goto fail; + } + */ + if (!(u->sink = pa_sink_new(m->core, __FILE__, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME), 0, &ss, &map))) { + pa_log("Failed to create sink."); + goto fail; + } + + u->sink->parent.process_msg = sink_process_msg; + u->sink->userdata = u; + u->sink->flags = PA_SINK_LATENCY; + + pa_sink_set_module(u->sink, m); + pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq); + pa_sink_set_rtpoll(u->sink, u->rtpoll); + pa_sink_set_description(u->sink, t = pa_sprintf_malloc("Airtunes sink '%s'", u->server_name)); + pa_xfree(t); + + u->rtpoll_item = pa_rtpoll_item_new(u->rtpoll, PA_RTPOLL_NEVER, 1); + pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL); + //pollfd->fd = u->fd; + pollfd->events = pollfd->revents = 0; + + if (!(u->thread = pa_thread_new(thread_func, u))) { + 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; +} + +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->memchunk.memblock) + pa_memblock_unref(u->memchunk.memblock); + + if (u->rtpoll_item) + pa_rtpoll_item_free(u->rtpoll_item); + + if (u->rtpoll) + pa_rtpoll_free(u->rtpoll); + + pa_xfree(u->server_name); + pa_xfree(u); +} -- cgit