mirror of
https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
synced 2025-11-06 13:29:56 -05:00
5effc83479
FSF addresses used in PA sources are no longer valid and rpmlint generates numerous warnings during packaging because of this. This patch changes all FSF addresses to FSF web page according to the GPL how-to: https://www.gnu.org/licenses/gpl-howto.en.html Done automatically by sed-ing through sources.
303 lines
7.8 KiB
C
303 lines
7.8 KiB
C
/***
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This file is part of PulseAudio.
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Copyright 2004-2006 Lennart Poettering
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PulseAudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 2.1 of the License,
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or (at your option) any later version.
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PulseAudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
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***/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <stdio.h>
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#include <stdlib.h>
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#if defined(HAVE_REGEX_H)
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#include <regex.h>
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#elif defined(HAVE_PCREPOSIX_H)
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#include <pcreposix.h>
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#endif
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#include <pulse/xmalloc.h>
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#include <pulsecore/core-error.h>
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#include <pulsecore/module.h>
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#include <pulsecore/core-util.h>
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#include <pulsecore/modargs.h>
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#include <pulsecore/log.h>
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#include <pulsecore/sink-input.h>
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#include <pulsecore/core-util.h>
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#include "module-match-symdef.h"
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PA_MODULE_AUTHOR("Lennart Poettering");
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PA_MODULE_DESCRIPTION("Playback stream expression matching module");
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PA_MODULE_VERSION(PACKAGE_VERSION);
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PA_MODULE_LOAD_ONCE(true);
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PA_MODULE_USAGE("table=<filename> "
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"key=<property_key>");
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#define WHITESPACE "\n\r \t"
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#define DEFAULT_MATCH_TABLE_FILE PA_DEFAULT_CONFIG_DIR"/match.table"
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#define DEFAULT_MATCH_TABLE_FILE_USER "match.table"
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#define UPDATE_REPLACE "replace"
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#define UPDATE_MERGE "merge"
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static const char* const valid_modargs[] = {
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"table",
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"key",
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NULL,
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};
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struct rule {
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regex_t regex;
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pa_volume_t volume;
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pa_proplist *proplist;
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pa_update_mode_t mode;
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struct rule *next;
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};
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struct userdata {
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struct rule *rules;
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char *property_key;
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pa_hook_slot *sink_input_fixate_hook_slot;
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};
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static int load_rules(struct userdata *u, const char *filename) {
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FILE *f;
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int n = 0;
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int ret = -1;
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struct rule *end = NULL;
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char *fn = NULL;
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pa_assert(u);
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if (filename)
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f = pa_fopen_cloexec(fn = pa_xstrdup(filename), "r");
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else
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f = pa_open_config_file(DEFAULT_MATCH_TABLE_FILE, DEFAULT_MATCH_TABLE_FILE_USER, NULL, &fn);
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if (!f) {
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pa_log("Failed to open file config file: %s", pa_cstrerror(errno));
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goto finish;
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}
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pa_lock_fd(fileno(f), 1);
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while (!feof(f)) {
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char *token_end, *value_str;
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pa_volume_t volume = PA_VOLUME_NORM;
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uint32_t k;
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regex_t regex;
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char ln[256];
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struct rule *rule;
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pa_proplist *proplist = NULL;
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pa_update_mode_t mode = (pa_update_mode_t) -1;
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if (!fgets(ln, sizeof(ln), f))
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break;
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n++;
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pa_strip_nl(ln);
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if (ln[0] == '#' || !*ln )
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continue;
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token_end = ln + strcspn(ln, WHITESPACE);
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value_str = token_end + strspn(token_end, WHITESPACE);
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*token_end = 0;
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if (!*ln) {
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pa_log("[%s:%u] failed to parse line - missing regexp", fn, n);
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goto finish;
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}
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if (!*value_str) {
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pa_log("[%s:%u] failed to parse line - too few words", fn, n);
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goto finish;
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}
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if (pa_atou(value_str, &k) >= 0)
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volume = (pa_volume_t) PA_CLAMP_VOLUME(k);
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else {
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size_t len;
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token_end = value_str + strcspn(value_str, WHITESPACE);
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len = token_end - value_str;
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if (len == (sizeof(UPDATE_REPLACE) - 1) && !strncmp(value_str, UPDATE_REPLACE, len))
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mode = PA_UPDATE_REPLACE;
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else if (len == (sizeof(UPDATE_MERGE) - 1) && !strncmp(value_str, UPDATE_MERGE, len))
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mode = PA_UPDATE_MERGE;
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if (mode != (pa_update_mode_t) -1) {
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value_str = token_end + strspn(token_end, WHITESPACE);
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if (!*value_str) {
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pa_log("[%s:%u] failed to parse line - too few words", fn, n);
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goto finish;
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}
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} else
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mode = PA_UPDATE_MERGE;
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if (*value_str == '"') {
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value_str++;
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token_end = strchr(value_str, '"');
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if (!token_end) {
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pa_log("[%s:%u] failed to parse line - missing role closing quote", fn, n);
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goto finish;
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}
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} else
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token_end = value_str + strcspn(value_str, WHITESPACE);
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*token_end = 0;
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value_str = pa_sprintf_malloc("media.role=\"%s\"", value_str);
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proplist = pa_proplist_from_string(value_str);
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pa_xfree(value_str);
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}
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if (regcomp(®ex, ln, REG_EXTENDED|REG_NOSUB) != 0) {
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pa_log("[%s:%u] invalid regular expression", fn, n);
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if (proplist)
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pa_proplist_free(proplist);
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goto finish;
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}
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rule = pa_xnew(struct rule, 1);
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rule->regex = regex;
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rule->proplist = proplist;
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rule->mode = mode;
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rule->volume = volume;
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rule->next = NULL;
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if (end)
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end->next = rule;
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else
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u->rules = rule;
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end = rule;
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}
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ret = 0;
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finish:
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if (f) {
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pa_lock_fd(fileno(f), 0);
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fclose(f);
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}
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pa_xfree(fn);
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return ret;
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}
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static pa_hook_result_t sink_input_fixate_hook_callback(pa_core *c, pa_sink_input_new_data *si, struct userdata *u) {
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struct rule *r;
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const char *n;
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pa_assert(c);
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pa_assert(u);
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if (!(n = pa_proplist_gets(si->proplist, u->property_key)))
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return PA_HOOK_OK;
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pa_log_debug("Matching with %s", n);
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for (r = u->rules; r; r = r->next) {
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if (!regexec(&r->regex, n, 0, NULL, 0)) {
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if (r->proplist) {
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pa_log_debug("updating proplist of sink input '%s'", n);
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pa_proplist_update(si->proplist, r->mode, r->proplist);
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} else if (si->volume_writable) {
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pa_cvolume cv;
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pa_log_debug("changing volume of sink input '%s' to 0x%03x", n, r->volume);
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pa_cvolume_set(&cv, si->sample_spec.channels, r->volume);
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pa_sink_input_new_data_set_volume(si, &cv);
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} else
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pa_log_debug("the volume of sink input '%s' is not writable, can't change it", n);
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}
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}
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return PA_HOOK_OK;
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}
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int pa__init(pa_module*m) {
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pa_modargs *ma = NULL;
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struct userdata *u;
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pa_assert(m);
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if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
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pa_log("Failed to parse module arguments");
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goto fail;
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}
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u = pa_xnew0(struct userdata, 1);
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u->rules = NULL;
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m->userdata = u;
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u->property_key = pa_xstrdup(pa_modargs_get_value(ma, "key", PA_PROP_MEDIA_NAME));
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if (load_rules(u, pa_modargs_get_value(ma, "table", NULL)) < 0)
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goto fail;
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/* hook EARLY - 1, to match before stream-restore */
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u->sink_input_fixate_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_FIXATE], PA_HOOK_EARLY - 1, (pa_hook_cb_t) sink_input_fixate_hook_callback, u);
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pa_modargs_free(ma);
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return 0;
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fail:
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pa__done(m);
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if (ma)
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pa_modargs_free(ma);
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return -1;
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}
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void pa__done(pa_module*m) {
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struct userdata* u;
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struct rule *r, *n;
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pa_assert(m);
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if (!(u = m->userdata))
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return;
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if (u->sink_input_fixate_hook_slot)
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pa_hook_slot_free(u->sink_input_fixate_hook_slot);
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if (u->property_key)
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pa_xfree(u->property_key);
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for (r = u->rules; r; r = n) {
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n = r->next;
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regfree(&r->regex);
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if (r->proplist)
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pa_proplist_free(r->proplist);
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pa_xfree(r);
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}
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pa_xfree(u);
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}
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