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-match.c | 235 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 235 insertions(+) create mode 100644 src/modules/module-match.c (limited to 'src/modules/module-match.c') diff --git a/src/modules/module-match.c b/src/modules/module-match.c new file mode 100644 index 00000000..10ceb75e --- /dev/null +++ b/src/modules/module-match.c @@ -0,0 +1,235 @@ +/* $Id$ */ + +/*** + 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 "module-match-symdef.h" + +PA_MODULE_AUTHOR("Lennart Poettering") +PA_MODULE_DESCRIPTION("Sink input matching module") +PA_MODULE_USAGE("table=") +PA_MODULE_VERSION(PACKAGE_VERSION) + +#define WHITESPACE "\n\r \t" + +#ifndef DEFAULT_CONFIG_DIR +#define DEFAULT_CONFIG_DIR "/etc/polypaudio" +#endif + +#define DEFAULT_MATCH_TABLE_FILE DEFAULT_CONFIG_DIR"/match.table" +#define DEFAULT_MATCH_TABLE_FILE_USER ".polypaudio/match.table" + +static const char* const valid_modargs[] = { + "table", + NULL, +}; + +struct rule { + regex_t regex; + pa_volume_t volume; + struct rule *next; +}; + +struct userdata { + struct rule *rules; + pa_subscription *subscription; +}; + +static int load_rules(struct userdata *u, const char *filename) { + FILE *f; + int n = 0; + int ret = -1; + struct rule *end = NULL; + char *fn = NULL; + + f = filename ? + fopen(fn = pa_xstrdup(filename), "r") : + pa_open_config_file(DEFAULT_MATCH_TABLE_FILE, DEFAULT_MATCH_TABLE_FILE_USER, NULL, &fn); + + if (!f) { + pa_log(__FILE__": failed to open file '%s': %s\n", fn, strerror(errno)); + goto finish; + } + + while (!feof(f)) { + char *d, *v; + pa_volume_t volume; + uint32_t k; + regex_t regex; + char ln[256]; + struct rule *rule; + + if (!fgets(ln, sizeof(ln), f)) + break; + + n++; + + pa_strip_nl(ln); + + if (ln[0] == '#' || !*ln ) + continue; + + d = ln+strcspn(ln, WHITESPACE); + v = d+strspn(d, WHITESPACE); + + + if (!*v) { + pa_log(__FILE__ ": [%s:%u] failed to parse line - too few words\n", filename, n); + goto finish; + } + + *d = 0; + if (pa_atou(v, &k) < 0) { + pa_log(__FILE__": [%s:%u] failed to parse volume\n", filename, n); + goto finish; + } + + volume = (pa_volume_t) k; + + + if (regcomp(®ex, ln, REG_EXTENDED|REG_NOSUB) != 0) { + pa_log(__FILE__": [%s:%u] invalid regular expression\n", filename, n); + goto finish; + } + + rule = pa_xmalloc(sizeof(struct rule)); + rule->regex = regex; + rule->volume = volume; + rule->next = NULL; + + if (end) + end->next = rule; + else + u->rules = rule; + end = rule; + + *d = 0; + } + + ret = 0; + +finish: + if (f) + fclose(f); + + if (fn) + pa_xfree(fn); + + return ret; +} + +static void callback(pa_core *c, pa_subscription_event_type_t t, uint32_t idx, void *userdata) { + struct userdata *u = userdata; + pa_sink_input *si; + struct rule *r; + assert(c && u); + + if (t != (PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_NEW)) + return; + + if (!(si = pa_idxset_get_by_index(c->sink_inputs, idx))) + return; + + if (!si->name) + return; + + for (r = u->rules; r; r = r->next) { + if (!regexec(&r->regex, si->name, 0, NULL, 0)) { + pa_cvolume cv; + pa_log_debug(__FILE__": changing volume of sink input '%s' to 0x%03x\n", si->name, r->volume); + pa_cvolume_set(&cv, r->volume, si->sample_spec.channels); + pa_sink_input_set_volume(si, &cv); + } + } +} + +int pa__init(pa_core *c, pa_module*m) { + pa_modargs *ma = NULL; + struct userdata *u; + assert(c && m); + + if (!(ma = pa_modargs_new(m->argument, valid_modargs))) { + pa_log(__FILE__": Failed to parse module arguments\n"); + goto fail; + } + + u = pa_xmalloc(sizeof(struct userdata)); + u->rules = NULL; + u->subscription = NULL; + m->userdata = u; + + if (load_rules(u, pa_modargs_get_value(ma, "table", NULL)) < 0) + goto fail; + + u->subscription = pa_subscription_new(c, PA_SUBSCRIPTION_MASK_SINK_INPUT, callback, u); + + pa_modargs_free(ma); + return 0; + +fail: + pa__done(c, m); + + if (ma) + pa_modargs_free(ma); + return -1; +} + +void pa__done(pa_core *c, pa_module*m) { + struct userdata* u; + struct rule *r, *n; + assert(c && m); + + if (!(u = m->userdata)) + return; + + if (u->subscription) + pa_subscription_free(u->subscription); + + for (r = u->rules; r; r = n) { + n = r->next; + + regfree(&r->regex); + pa_xfree(r); + } + + pa_xfree(u); +} + + -- cgit