X-Git-Url: https://code.delx.au/pulseaudio/blobdiff_plain/e205b25d65ccb380fa158711e24d55b6de5d9bc1..441bd54bdcacba5a341bfbe9b52ef33f55cc2caf:/src/modules/module-pipe-source.c diff --git a/src/modules/module-pipe-source.c b/src/modules/module-pipe-source.c index a7bb0ce7..a941f088 100644 --- a/src/modules/module-pipe-source.c +++ b/src/modules/module-pipe-source.c @@ -1,20 +1,20 @@ -/* $Id$ */ - /*** - This file is part of polypaudio. - - polypaudio is free software; you can redistribute it and/or modify + This file is part of PulseAudio. + + Copyright 2004-2006 Lennart Poettering + + 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, + by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. - - polypaudio is distributed in the hope that it will be useful, but + + 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 polypaudio; if not, write to the Free Software + along with PulseAudio; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. ***/ @@ -26,185 +26,339 @@ #include #include #include -#include #include -#include #include #include -#include +#include -#include -#include -#include -#include -#include -#include -#include +#ifdef HAVE_SYS_FILIO_H +#include +#endif -#include "module-pipe-source-symdef.h" +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include -PA_MODULE_AUTHOR("Lennart Poettering") -PA_MODULE_DESCRIPTION("UNIX pipe source") -PA_MODULE_VERSION(PACKAGE_VERSION) -PA_MODULE_USAGE("source_name= file= format= channels= rate=") +#include "module-pipe-source-symdef.h" -#define DEFAULT_FIFO_NAME "/tmp/music.input" +PA_MODULE_AUTHOR("Lennart Poettering"); +PA_MODULE_DESCRIPTION("UNIX pipe source"); +PA_MODULE_VERSION(PACKAGE_VERSION); +PA_MODULE_LOAD_ONCE(FALSE); +PA_MODULE_USAGE( + "source_name= " + "source_properties= " + "file= " + "format= " + "rate= " + "channels= " + "channel_map="); + +#define DEFAULT_FILE_NAME "/tmp/music.input" #define DEFAULT_SOURCE_NAME "fifo_input" struct userdata { pa_core *core; + pa_module *module; + pa_source *source; + + pa_thread *thread; + pa_thread_mq thread_mq; + pa_rtpoll *rtpoll; char *filename; - - pa_source *source; - pa_iochannel *io; - pa_module *module; - pa_memchunk chunk; + int fd; + + pa_memchunk memchunk; + + pa_rtpoll_item *rtpoll_item; }; static const char* const valid_modargs[] = { + "source_name", + "source_properties", "file", + "format", "rate", "channels", - "format", - "source_name", + "channel_map", NULL }; -static void do_read(struct userdata *u) { - ssize_t r; - pa_memchunk chunk; - assert(u); +static int source_process_msg( + pa_msgobject *o, + int code, + void *data, + int64_t offset, + pa_memchunk *chunk) { - if (!pa_iochannel_is_readable(u->io)) - return; + struct userdata *u = PA_SOURCE(o)->userdata; - pa_module_set_used(u->module, pa_idxset_size(u->source->outputs)); + switch (code) { - if (!u->chunk.memblock) { - u->chunk.memblock = pa_memblock_new(1024, u->core->memblock_stat); - u->chunk.index = chunk.length = 0; - } + case PA_SOURCE_MESSAGE_GET_LATENCY: { + size_t n = 0; - assert(u->chunk.memblock && u->chunk.memblock->length > u->chunk.index); - if ((r = pa_iochannel_read(u->io, (uint8_t*) u->chunk.memblock->data + u->chunk.index, u->chunk.memblock->length - u->chunk.index)) <= 0) { - pa_log(__FILE__": read() failed: %s\n", strerror(errno)); - return; - } +#ifdef FIONREAD + int l; - u->chunk.length = r; - pa_source_post(u->source, &u->chunk); - u->chunk.index += r; + if (ioctl(u->fd, FIONREAD, &l) >= 0 && l > 0) + n = (size_t) l; +#endif - if (u->chunk.index >= u->chunk.memblock->length) { - u->chunk.index = u->chunk.length = 0; - pa_memblock_unref(u->chunk.memblock); - u->chunk.memblock = NULL; + *((pa_usec_t*) data) = pa_bytes_to_usec(n, &u->source->sample_spec); + return 0; + } } + + return pa_source_process_msg(o, code, data, offset, chunk); } -static void io_callback(PA_GCC_UNUSED pa_iochannel *io, void*userdata) { +static void thread_func(void *userdata) { struct userdata *u = userdata; - assert(u); - do_read(u); + int read_type = 0; + + pa_assert(u); + + pa_log_debug("Thread starting up"); + + pa_thread_mq_install(&u->thread_mq); + + for (;;) { + int ret; + struct pollfd *pollfd; + + pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL); + + /* Try to read some data and pass it on to the source driver */ + if (u->source->thread_info.state == PA_SOURCE_RUNNING && pollfd->revents) { + ssize_t l; + void *p; + + if (!u->memchunk.memblock) { + u->memchunk.memblock = pa_memblock_new(u->core->mempool, pa_pipe_buf(u->fd)); + u->memchunk.index = u->memchunk.length = 0; + } + + pa_assert(pa_memblock_get_length(u->memchunk.memblock) > u->memchunk.index); + + p = pa_memblock_acquire(u->memchunk.memblock); + l = pa_read(u->fd, (uint8_t*) p + u->memchunk.index, pa_memblock_get_length(u->memchunk.memblock) - u->memchunk.index, &read_type); + pa_memblock_release(u->memchunk.memblock); + + pa_assert(l != 0); /* EOF cannot happen, since we opened the fifo for both reading and writing */ + + if (l < 0) { + + if (errno == EINTR) + continue; + else if (errno != EAGAIN) { + pa_log("Failed to read data from FIFO: %s", pa_cstrerror(errno)); + goto fail; + } + + } else { + + u->memchunk.length = (size_t) l; + pa_source_post(u->source, &u->memchunk); + u->memchunk.index += (size_t) l; + + if (u->memchunk.index >= pa_memblock_get_length(u->memchunk.memblock)) { + pa_memblock_unref(u->memchunk.memblock); + pa_memchunk_reset(&u->memchunk); + } + + pollfd->revents = 0; + } + } + + /* Hmm, nothing to do. Let's sleep */ + pollfd->events = (short) (u->source->thread_info.state == PA_SOURCE_RUNNING ? POLLIN : 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 & ~POLLIN) { + 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_core *c, pa_module*m) { - struct userdata *u = NULL; +int pa__init(pa_module*m) { + struct userdata *u; struct stat st; - const char *p; - int fd = -1; pa_sample_spec ss; - pa_modargs *ma = NULL; - assert(c && m); - + pa_channel_map map; + pa_modargs *ma; + struct pollfd *pollfd; + pa_source_new_data data; + + pa_assert(m); + if (!(ma = pa_modargs_new(m->argument, valid_modargs))) { - pa_log(__FILE__": failed to parse module arguments\n"); + pa_log("failed to parse module arguments."); goto fail; } - ss = c->default_sample_spec; - if (pa_modargs_get_sample_spec(ma, &ss) < 0) { - pa_log(__FILE__": invalid sample format specification\n"); + 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; } - - mkfifo(p = pa_modargs_get_value(ma, "file", DEFAULT_FIFO_NAME), 0777); - if ((fd = open(p, O_RDWR)) < 0) { - pa_log(__FILE__": open('%s'): %s\n", p, strerror(errno)); + m->userdata = u = pa_xnew0(struct userdata, 1); + u->core = m->core; + u->module = m; + pa_memchunk_reset(&u->memchunk); + u->rtpoll = pa_rtpoll_new(); + pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll); + + u->filename = pa_runtime_path(pa_modargs_get_value(ma, "file", DEFAULT_FILE_NAME)); + + mkfifo(u->filename, 0666); + if ((u->fd = pa_open_cloexec(u->filename, O_RDWR, 0)) < 0) { + pa_log("open('%s'): %s", u->filename, pa_cstrerror(errno)); goto fail; } - pa_fd_set_cloexec(fd, 1); - - if (fstat(fd, &st) < 0) { - pa_log(__FILE__": fstat('%s'): %s\n", p, strerror(errno)); + 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(__FILE__": '%s' is not a FIFO.\n", p); + pa_log("'%s' is not a FIFO.", u->filename); goto fail; } - u = pa_xmalloc0(sizeof(struct userdata)); + 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_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, u->filename); + pa_proplist_setf(data.proplist, PA_PROP_DEVICE_DESCRIPTION, "Unix FIFO source %s", u->filename); + pa_source_new_data_set_sample_spec(&data, &ss); + pa_source_new_data_set_channel_map(&data, &map); + + if (pa_modargs_get_proplist(ma, "source_properties", data.proplist, PA_UPDATE_REPLACE) < 0) { + pa_log("Invalid properties"); + pa_source_new_data_done(&data); + goto fail; + } - u->filename = pa_xstrdup(p); - u->core = c; - - if (!(u->source = pa_source_new(c, __FILE__, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME), 0, &ss, NULL))) { - pa_log(__FILE__": failed to create source.\n"); + u->source = pa_source_new(m->core, &data, PA_SOURCE_LATENCY); + pa_source_new_data_done(&data); + + if (!u->source) { + pa_log("Failed to create source."); goto fail; } + + u->source->parent.process_msg = source_process_msg; u->source->userdata = u; - pa_source_set_owner(u->source, m); - u->source->description = pa_sprintf_malloc("Unix FIFO source '%s'", p); - assert(u->source->description); - u->io = pa_iochannel_new(c->mainloop, fd, -1); - assert(u->io); - pa_iochannel_set_callback(u->io, io_callback, u); + pa_source_set_asyncmsgq(u->source, u->thread_mq.inq); + pa_source_set_rtpoll(u->source, u->rtpoll); + pa_source_set_fixed_latency(u->source, pa_bytes_to_usec(PIPE_BUF, &u->source->sample_spec)); - u->chunk.memblock = NULL; - u->chunk.index = u->chunk.length = 0; - - u->module = m; - m->userdata = u; + 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("pipe-source", thread_func, u))) { + pa_log("Failed to create thread."); + goto fail; + } + + pa_source_put(u->source); pa_modargs_free(ma); - + return 0; fail: if (ma) pa_modargs_free(ma); - - if (fd >= 0) - close(fd); - pa__done(c, m); + pa__done(m); return -1; } -void pa__done(pa_core *c, pa_module*m) { +int pa__get_n_used(pa_module *m) { struct userdata *u; - assert(c && m); + + pa_assert(m); + pa_assert_se(u = m->userdata); + + return pa_source_linked_by(u->source); +} + +void pa__done(pa_module*m) { + struct userdata *u; + + pa_assert(m); if (!(u = m->userdata)) return; - - if (u->chunk.memblock) - pa_memblock_unref(u->chunk.memblock); - - pa_source_disconnect(u->source); - pa_source_unref(u->source); - pa_iochannel_free(u->io); - - assert(u->filename); - unlink(u->filename); - pa_xfree(u->filename); - + + 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->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); + + if (u->filename) { + unlink(u->filename); + pa_xfree(u->filename); + } + + if (u->fd >= 0) + pa_assert_se(pa_close(u->fd) == 0); + pa_xfree(u); }