From e205b25d65ccb380fa158711e24d55b6de5d9bc1 Mon Sep 17 00:00:00 2001 From: Pierre Ossman Date: Thu, 16 Feb 2006 19:19:58 +0000 Subject: Reorganised the source tree. We now have src/ with a couple of subdirs: * daemon/ - Contains the files specific to the polypaudio daemon. * modules/ - All loadable modules. * polyp/ - Files that are part of the public, application interface or are only used in libpolyp. * polypcore/ - All other shared files. * tests/ - Test programs. * utils/ - Utility programs. git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@487 fefdeb5f-60dc-0310-8127-8f9354f1896f --- src/modules/module-pipe-source.c | 210 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 210 insertions(+) create mode 100644 src/modules/module-pipe-source.c (limited to 'src/modules/module-pipe-source.c') diff --git a/src/modules/module-pipe-source.c b/src/modules/module-pipe-source.c new file mode 100644 index 00000000..a7bb0ce7 --- /dev/null +++ b/src/modules/module-pipe-source.c @@ -0,0 +1,210 @@ +/* $Id$ */ + +/*** + This file is part of polypaudio. + + polypaudio is free software; you can redistribute it and/or modify + it under the terms of the GNU Lesser 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 Lesser 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 +#include +#include +#include +#include +#include +#include + +#include "module-pipe-source-symdef.h" + +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=") + +#define DEFAULT_FIFO_NAME "/tmp/music.input" +#define DEFAULT_SOURCE_NAME "fifo_input" + +struct userdata { + pa_core *core; + + char *filename; + + pa_source *source; + pa_iochannel *io; + pa_module *module; + pa_memchunk chunk; +}; + +static const char* const valid_modargs[] = { + "file", + "rate", + "channels", + "format", + "source_name", + NULL +}; + +static void do_read(struct userdata *u) { + ssize_t r; + pa_memchunk chunk; + assert(u); + + if (!pa_iochannel_is_readable(u->io)) + return; + + pa_module_set_used(u->module, pa_idxset_size(u->source->outputs)); + + if (!u->chunk.memblock) { + u->chunk.memblock = pa_memblock_new(1024, u->core->memblock_stat); + u->chunk.index = chunk.length = 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; + } + + u->chunk.length = r; + pa_source_post(u->source, &u->chunk); + u->chunk.index += r; + + 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; + } +} + +static void io_callback(PA_GCC_UNUSED pa_iochannel *io, void*userdata) { + struct userdata *u = userdata; + assert(u); + do_read(u); +} + +int pa__init(pa_core *c, pa_module*m) { + struct userdata *u = NULL; + struct stat st; + const char *p; + int fd = -1; + pa_sample_spec ss; + pa_modargs *ma = NULL; + assert(c && m); + + if (!(ma = pa_modargs_new(m->argument, valid_modargs))) { + pa_log(__FILE__": failed to parse module arguments\n"); + goto fail; + } + + ss = c->default_sample_spec; + if (pa_modargs_get_sample_spec(ma, &ss) < 0) { + pa_log(__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) { + pa_log(__FILE__": open('%s'): %s\n", p, strerror(errno)); + goto fail; + } + + pa_fd_set_cloexec(fd, 1); + + if (fstat(fd, &st) < 0) { + pa_log(__FILE__": fstat('%s'): %s\n", p, strerror(errno)); + goto fail; + } + + if (!S_ISFIFO(st.st_mode)) { + pa_log(__FILE__": '%s' is not a FIFO.\n", p); + goto fail; + } + + u = pa_xmalloc0(sizeof(struct userdata)); + + 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"); + goto fail; + } + 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); + + u->chunk.memblock = NULL; + u->chunk.index = u->chunk.length = 0; + + u->module = m; + m->userdata = u; + + pa_modargs_free(ma); + + return 0; + +fail: + if (ma) + pa_modargs_free(ma); + + if (fd >= 0) + close(fd); + + pa__done(c, m); + + return -1; +} + +void pa__done(pa_core *c, pa_module*m) { + struct userdata *u; + assert(c && 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); + + pa_xfree(u); +} -- cgit