diff options
Diffstat (limited to 'src/modules/module-position-event-sounds.c')
| -rw-r--r-- | src/modules/module-position-event-sounds.c | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/src/modules/module-position-event-sounds.c b/src/modules/module-position-event-sounds.c new file mode 100644 index 0000000..dcdfb30 --- /dev/null +++ b/src/modules/module-position-event-sounds.c @@ -0,0 +1,179 @@ +/*** + This file is part of PulseAudio. + + Copyright 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 2.1 of the License, + or (at your option) any later version. + + 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 PulseAudio; if not, see <http://www.gnu.org/licenses/>. +***/ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <unistd.h> +#include <errno.h> +#include <sys/types.h> +#include <stdio.h> +#include <stdlib.h> + +#include <pulse/xmalloc.h> +#include <pulse/volume.h> +#include <pulse/channelmap.h> + +#include <pulsecore/module.h> +#include <pulsecore/core-util.h> +#include <pulsecore/modargs.h> +#include <pulsecore/log.h> +#include <pulsecore/sink-input.h> + +PA_MODULE_AUTHOR("Lennart Poettering"); +PA_MODULE_DESCRIPTION("Position event sounds between L and R depending on the position on screen of the widget triggering them."); +PA_MODULE_VERSION(PACKAGE_VERSION); +PA_MODULE_LOAD_ONCE(true); + +static const char* const valid_modargs[] = { + NULL +}; + +struct userdata { + pa_hook_slot *sink_input_fixate_hook_slot; + const char *name; +}; + +static int parse_pos(const char *pos, double *f) { + + if (pa_atod(pos, f) < 0) { + pa_log_warn("Failed to parse hpos/vpos property '%s'.", pos); + return -1; + } + + if (*f < 0.0 || *f > 1.0) { + pa_log_debug("Property hpos/vpos out of range %0.2f", *f); + + *f = PA_CLAMP(*f, 0.0, 1.0); + } + + return 0; +} + +static pa_hook_result_t sink_input_fixate_hook_callback(pa_core *core, pa_sink_input_new_data *data, struct userdata *u) { + const char *hpos, *vpos, *role, *id; + double f; + char t[PA_CVOLUME_SNPRINT_VERBOSE_MAX]; + pa_cvolume v; + + pa_assert(data); + + if (!(role = pa_proplist_gets(data->proplist, PA_PROP_MEDIA_ROLE))) + return PA_HOOK_OK; + + if (!pa_streq(role, "event")) + return PA_HOOK_OK; + + if ((id = pa_proplist_gets(data->proplist, PA_PROP_EVENT_ID))) { + + /* The test sounds should never be positioned in space, since + * they might be triggered themselves to configure the speakers + * in space, which we don't want to mess up. */ + + if (pa_startswith(id, "audio-channel-")) + return PA_HOOK_OK; + + if (pa_streq(id, "audio-volume-change")) + return PA_HOOK_OK; + + if (pa_streq(id, "audio-test-signal")) + return PA_HOOK_OK; + } + + if (!(hpos = pa_proplist_gets(data->proplist, PA_PROP_EVENT_MOUSE_HPOS))) + hpos = pa_proplist_gets(data->proplist, PA_PROP_WINDOW_HPOS); + + if (!(vpos = pa_proplist_gets(data->proplist, PA_PROP_EVENT_MOUSE_VPOS))) + vpos = pa_proplist_gets(data->proplist, PA_PROP_WINDOW_VPOS); + + if (!hpos && !vpos) + return PA_HOOK_OK; + + pa_cvolume_reset(&v, data->sink->sample_spec.channels); + + if (hpos) { + if (parse_pos(hpos, &f) < 0) + return PA_HOOK_OK; + + if (pa_channel_map_can_balance(&data->sink->channel_map)) { + pa_log_debug("Positioning event sound '%s' horizontally at %0.2f.", pa_strnull(pa_proplist_gets(data->proplist, PA_PROP_EVENT_ID)), f); + pa_cvolume_set_balance(&v, &data->sink->channel_map, f*2.0-1.0); + } + } + + if (vpos) { + if (parse_pos(vpos, &f) < 0) + return PA_HOOK_OK; + + if (pa_channel_map_can_fade(&data->sink->channel_map)) { + pa_log_debug("Positioning event sound '%s' vertically at %0.2f.", pa_strnull(pa_proplist_gets(data->proplist, PA_PROP_EVENT_ID)), f); + pa_cvolume_set_fade(&v, &data->sink->channel_map, f*2.0-1.0); + } + } + + pa_log_debug("Final volume factor %s.", + pa_cvolume_snprint_verbose(t, + sizeof(t), + &v, + &data->sink->channel_map, + data->sink->flags & PA_SINK_DECIBEL_VOLUME)); + pa_sink_input_new_data_add_volume_factor_sink(data, u->name, &v); + + return PA_HOOK_OK; +} + +int pa__init(pa_module*m) { + pa_modargs *ma; + struct userdata *u; + + pa_assert(m); + + if (!(ma = pa_modargs_new(m->argument, valid_modargs))) { + pa_log("Failed to parse module arguments"); + goto fail; + } + + m->userdata = u = pa_xnew(struct userdata, 1); + u->sink_input_fixate_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_FIXATE], PA_HOOK_EARLY, (pa_hook_cb_t) sink_input_fixate_hook_callback, u); + + pa_modargs_free(ma); + u->name = m->name; + + return 0; + +fail: + pa__done(m); + + return -1; +} + +void pa__done(pa_module*m) { + struct userdata* u; + + pa_assert(m); + + if (!(u = m->userdata)) + return; + + if (u->sink_input_fixate_hook_slot) + pa_hook_slot_free(u->sink_input_fixate_hook_slot); + + pa_xfree(u); +} |