From 41f6aea8fdbc744c13bc461056a2d694a5c4d06f Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Sat, 17 Jul 2004 14:12:30 +0000 Subject: rename src to polyp git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@90 fefdeb5f-60dc-0310-8127-8f9354f1896f --- polyp/module-pipe-sink.c | 218 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 218 insertions(+) create mode 100644 polyp/module-pipe-sink.c (limited to 'polyp/module-pipe-sink.c') diff --git a/polyp/module-pipe-sink.c b/polyp/module-pipe-sink.c new file mode 100644 index 00000000..df34f73a --- /dev/null +++ b/polyp/module-pipe-sink.c @@ -0,0 +1,218 @@ +/* $Id$ */ + +/*** + This file is part of polypaudio. + + polypaudio is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published + by the Free Software Foundation; either version 2 of the License, + or (at your option) any later version. + + polypaudio 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 General Public License + along with polypaudio; 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 "iochannel.h" +#include "sink.h" +#include "module.h" +#include "util.h" +#include "modargs.h" + +#define DEFAULT_FIFO_NAME "/tmp/musicfifo" +#define DEFAULT_SINK_NAME "fifo_output" + +struct userdata { + struct pa_core *core; + + char *filename; + + struct pa_sink *sink; + struct pa_iochannel *io; + void *mainloop_source; + + struct pa_memchunk memchunk; +}; + +static const char* const valid_modargs[] = { + "file", + "rate", + "channels", + "format", + "sink_name", + NULL +}; + +static void do_write(struct userdata *u) { + ssize_t r; + assert(u); + + u->core->mainloop->enable_fixed(u->core->mainloop, u->mainloop_source, 0); + + if (!pa_iochannel_is_writable(u->io)) + return; + + if (!u->memchunk.length) + if (pa_sink_render(u->sink, PIPE_BUF, &u->memchunk) < 0) + return; + + assert(u->memchunk.memblock && u->memchunk.length); + + if ((r = pa_iochannel_write(u->io, u->memchunk.memblock->data + u->memchunk.index, u->memchunk.length)) < 0) { + fprintf(stderr, "write() failed: %s\n", strerror(errno)); + return; + } + + u->memchunk.index += r; + u->memchunk.length -= r; + + if (u->memchunk.length <= 0) { + pa_memblock_unref(u->memchunk.memblock); + u->memchunk.memblock = NULL; + } +} + +static void notify_cb(struct pa_sink*s) { + struct userdata *u = s->userdata; + assert(s && u); + + if (pa_iochannel_is_writable(u->io)) + u->core->mainloop->enable_fixed(u->core->mainloop, u->mainloop_source, 1); +} + +static void fixed_callback(struct pa_mainloop_api *m, void *id, void *userdata) { + struct userdata *u = userdata; + assert(u); + do_write(u); +} + +static void io_callback(struct pa_iochannel *io, void*userdata) { + struct userdata *u = userdata; + assert(u); + do_write(u); +} + +int pa_module_init(struct pa_core *c, struct pa_module*m) { + struct userdata *u = NULL; + struct stat st; + const char *p; + int fd = -1; + struct pa_sample_spec ss; + struct pa_modargs *ma = NULL; + assert(c && m); + + if (!(ma = pa_modargs_new(m->argument, valid_modargs))) { + fprintf(stderr, __FILE__": failed to parse module arguments\n"); + goto fail; + } + + ss = c->default_sample_spec; + if (pa_modargs_get_sample_spec(ma, &ss) < 0) { + fprintf(stderr, __FILE__": invalid sample format specification\n"); + goto fail; + } + + mkfifo(p = pa_modargs_get_value(ma, "file", DEFAULT_FIFO_NAME), 0777); + + if ((fd = open(p, O_RDWR)) < 0) { + fprintf(stderr, __FILE__": open('%s'): %s\n", p, strerror(errno)); + goto fail; + } + + if (fstat(fd, &st) < 0) { + fprintf(stderr, __FILE__": fstat('%s'): %s\n", p, strerror(errno)); + goto fail; + } + + if (!S_ISFIFO(st.st_mode)) { + fprintf(stderr, __FILE__": '%s' is not a FIFO.\n", p); + goto fail; + } + + u = malloc(sizeof(struct userdata)); + assert(u); + memset(u, 0, sizeof(struct userdata)); + + u->filename = strdup(p); + assert(u->filename); + u->core = c; + + if (!(u->sink = pa_sink_new(c, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME), 0, &ss))) { + fprintf(stderr, __FILE__": failed to create sink.\n"); + goto fail; + } + u->sink->notify = notify_cb; + u->sink->userdata = u; + pa_sink_set_owner(u->sink, m); + u->sink->description = pa_sprintf_malloc("Unix FIFO sink '%s'", p); + assert(u->sink->description); + + u->io = pa_iochannel_new(c->mainloop, -1, fd); + assert(u->io); + pa_iochannel_set_callback(u->io, io_callback, u); + + u->memchunk.memblock = NULL; + u->memchunk.length = 0; + + u->mainloop_source = c->mainloop->source_fixed(c->mainloop, fixed_callback, u); + assert(u->mainloop_source); + c->mainloop->enable_fixed(c->mainloop, u->mainloop_source, 0); + + m->userdata = u; + + pa_modargs_free(ma); + + return 0; + +fail: + if (ma) + pa_modargs_free(ma); + + if (fd >= 0) + close(fd); + + pa_module_done(c, m); + + return -1; +} + +void pa_module_done(struct pa_core *c, struct pa_module*m) { + struct userdata *u; + assert(c && m); + + if (!(u = m->userdata)) + return; + + if (u->memchunk.memblock) + pa_memblock_unref(u->memchunk.memblock); + + pa_sink_free(u->sink); + pa_iochannel_free(u->io); + u->core->mainloop->cancel_fixed(u->core->mainloop, u->mainloop_source); + + assert(u->filename); + unlink(u->filename); + free(u->filename); + + free(u); +} -- cgit