diff options
Diffstat (limited to 'src/modules/module-position-event-sounds.c')
| -rw-r--r-- | src/modules/module-position-event-sounds.c | 167 |
1 files changed, 167 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 00000000..30f0fd9f --- /dev/null +++ b/src/modules/module-position-event-sounds.c @@ -0,0 +1,167 @@ +/* $Id$ */ + +/*** + 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 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, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + USA. +***/ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <sys/types.h> +#include <stdio.h> +#include <stdlib.h> +#include <ctype.h> + +#include <pulse/xmalloc.h> +#include <pulse/volume.h> +#include <pulse/channelmap.h> + +#include <pulsecore/core-error.h> +#include <pulsecore/module.h> +#include <pulsecore/core-util.h> +#include <pulsecore/modargs.h> +#include <pulsecore/log.h> +#include <pulsecore/sink-input.h> + +#include "module-position-event-sounds-symdef.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_core *core; + pa_hook_slot *sink_input_fixate_hook_slot; +}; + +static pa_bool_t is_left(pa_channel_position_t p) { + return + p == PA_CHANNEL_POSITION_FRONT_LEFT || + p == PA_CHANNEL_POSITION_REAR_LEFT || + p == PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER || + p == PA_CHANNEL_POSITION_SIDE_LEFT || + p == PA_CHANNEL_POSITION_TOP_FRONT_LEFT || + p == PA_CHANNEL_POSITION_TOP_REAR_LEFT; +} + +static pa_bool_t is_right(pa_channel_position_t p) { + return + p == PA_CHANNEL_POSITION_FRONT_RIGHT || + p == PA_CHANNEL_POSITION_REAR_RIGHT|| + p == PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER || + p == PA_CHANNEL_POSITION_SIDE_RIGHT || + p == PA_CHANNEL_POSITION_TOP_FRONT_RIGHT || + p == PA_CHANNEL_POSITION_TOP_REAR_RIGHT; +} + +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; + double f; + unsigned c; + char t[PA_CVOLUME_SNPRINT_MAX]; + + pa_assert(data); + + if (!(hpos = pa_proplist_gets(data->proplist, PA_PROP_EVENT_MOUSE_HPOS))) + return PA_HOOK_OK; + + if (pa_atod(hpos, &f) < 0) { + pa_log_warn("Failed to parse "PA_PROP_EVENT_MOUSE_HPOS" property '%s'.", hpos); + return PA_HOOK_OK; + } + + if (f < 0.0 || f > 1.0) { + pa_log_warn("Property "PA_PROP_EVENT_MOUSE_HPOS" out of range %0.2f", f); + return PA_HOOK_OK; + } + + pa_log_debug("Positioning event sound '%s' at %0.2f.", pa_strnull(pa_proplist_gets(data->proplist, PA_PROP_EVENT_ID)), f); + + if (!data->volume_is_set) { + pa_cvolume_reset(&data->volume, data->sample_spec.channels); + data->volume_is_set = TRUE; + } + + for (c = 0; c < data->sample_spec.channels; c++) { + + if (is_left(data->channel_map.map[c])) + data->volume.values[c] = + pa_sw_volume_multiply(data->volume.values[c], (pa_volume_t) (PA_VOLUME_NORM * (1.0 - f))); + + if (is_right(data->channel_map.map[c])) + data->volume.values[c] = + pa_sw_volume_multiply(data->volume.values[c], (pa_volume_t) (PA_VOLUME_NORM * f)); + } + + pa_log_debug("Final volume %s.", pa_cvolume_snprint(t, sizeof(t), &data->volume)); + + return PA_HOOK_OK; +} + +int pa__init(pa_module*m) { + pa_modargs *ma = NULL; + 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->core = m->core; + u->sink_input_fixate_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_FIXATE], (pa_hook_cb_t) sink_input_fixate_hook_callback, u); + + pa_modargs_free(ma); + + return 0; + +fail: + pa__done(m); + + if (ma) + pa_modargs_free(ma); + + 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); +} |