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#include "mixer_api.h"
#include "conf.h"
#include <glib.h>
#include <pulse/volume.h>
#include <pulse/pulseaudio.h>
#include <string.h>
#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "pulse_mixer"
struct pulse_mixer {
struct mixer base;
char *server;
char *sink;
char *output_name;
uint32_t index;
bool online;
struct pa_context *context;
struct pa_threaded_mainloop *mainloop;
struct pa_cvolume *volume;
};
static void
sink_input_cb(G_GNUC_UNUSED pa_context *context, const pa_sink_input_info *i,
int eol, void *userdata)
{
struct pulse_mixer *pm = userdata;
if (eol) {
g_debug("eol error sink_input_cb");
return;
}
if (!i) {
g_debug("Sink input callback failure");
return;
}
g_debug("sink input cb %s, index %d ",i->name,i->index);
if(strcmp(i->name,pm->output_name)==0) {
pm->index=i->index;
pm->online=true;
*pm->volume=i->volume;
} else
g_debug("bad name");
}
static void
sink_input_vol(G_GNUC_UNUSED pa_context *context, const pa_sink_input_info *i,
int eol, void *userdata)
{
struct pulse_mixer *pm = userdata;
if (eol) {
g_debug("eol error sink_input_vol");
return;
}
if (!i) {
g_debug("Sink input callback failure");
return;
}
g_debug("sink input vol %s, index %d ", i->name, i->index);
*pm->volume=i->volume;
}
static void
subscribe_cb(G_GNUC_UNUSED pa_context *c, pa_subscription_event_type_t t,
uint32_t idx, void *userdata)
{
struct pulse_mixer *pm = userdata;
g_debug("subscribe call back");
switch (t & PA_SUBSCRIPTION_EVENT_FACILITY_MASK) {
case PA_SUBSCRIPTION_EVENT_SINK_INPUT:
if ((t & PA_SUBSCRIPTION_EVENT_TYPE_MASK) ==
PA_SUBSCRIPTION_EVENT_REMOVE)
pm->online =false;
else {
pa_operation *o;
if (!(o = pa_context_get_sink_input_info(pm->context, idx, sink_input_cb, pm))) {
g_debug("pa_context_get_sink_input_info() failed");
return;
}
pa_operation_unref(o);
}
break;
}
}
static void
context_state_cb(pa_context *context, void *userdata)
{
struct pulse_mixer *pm = userdata;
switch (pa_context_get_state(context)) {
case PA_CONTEXT_READY: {
pa_operation *o;
pa_context_set_subscribe_callback(context, subscribe_cb, pm);
if (!(o = pa_context_subscribe(context, (pa_subscription_mask_t)
(PA_SUBSCRIPTION_MASK_SINK_INPUT), NULL, NULL))) {
g_debug("pa_context_subscribe() failed");
return;
}
pa_operation_unref(o);
if (!(o = pa_context_get_sink_input_info_list(context, sink_input_cb, pm))) {
g_debug("pa_context_get_sink_input_info_list() failed");
return;
}
pa_operation_unref(o);
pa_threaded_mainloop_signal(pm->mainloop, 0);
break;
}
case PA_CONTEXT_UNCONNECTED:
case PA_CONTEXT_CONNECTING:
case PA_CONTEXT_AUTHORIZING:
case PA_CONTEXT_SETTING_NAME:
break;
case PA_CONTEXT_TERMINATED:
case PA_CONTEXT_FAILED:
pa_threaded_mainloop_signal(pm->mainloop, 0);
break;
}
}
static struct mixer *
pulse_mixer_init(const struct config_param *param)
{
struct pulse_mixer *pm = g_new(struct pulse_mixer,1);
mixer_init(&pm->base, &pulse_mixer);
pm->server = NULL;
pm->sink = NULL;
pm->context=NULL;
pm->mainloop=NULL;
pm->volume=NULL;
pm->output_name=NULL;
pm->index=0;
pm->online=false;
pm->volume = g_new(struct pa_cvolume,1);
pm->server = param != NULL
? config_dup_block_string(param, "server", NULL) : NULL;
pm->sink = param != NULL
? config_dup_block_string(param, "sink", NULL) : NULL;
pm->output_name = param != NULL
? config_dup_block_string(param, "name", NULL) : NULL;
g_debug("init");
if(!(pm->mainloop = pa_threaded_mainloop_new())) {
g_debug("failed mainloop");
g_free(pm);
return NULL;
}
if(!(pm->context = pa_context_new(pa_threaded_mainloop_get_api(pm->mainloop),
"Mixer mpd"))) {
g_debug("failed context");
g_free(pm);
return NULL;
}
pa_context_set_state_callback(pm->context, context_state_cb, pm);
if (pa_context_connect(pm->context, pm->server,
(pa_context_flags_t)0, NULL) < 0) {
g_debug("context server fail");
g_free(pm);
return NULL;
}
pa_threaded_mainloop_lock(pm->mainloop);
if (pa_threaded_mainloop_start(pm->mainloop) < 0) {
g_debug("error start mainloop");
g_free(pm);
return NULL;
}
pa_threaded_mainloop_wait(pm->mainloop);
if (pa_context_get_state(pm->context) != PA_CONTEXT_READY) {
g_debug("error context not ready");
g_free(pm);
return NULL;
}
pa_threaded_mainloop_unlock(pm->mainloop);
return &pm->base ;
}
static void
pulse_mixer_finish(struct mixer *data)
{
struct pulse_mixer *pm = (struct pulse_mixer *) data;
pm->context = NULL;
pm->mainloop = NULL;
pm->volume = NULL;
pm->online = false;
g_free(pm);
}
static bool
pulse_mixer_open(G_GNUC_UNUSED struct mixer *data)
{
g_debug("pulse mixer open");
return true;
}
static void
pulse_mixer_close(G_GNUC_UNUSED struct mixer *data)
{
return;
}
static int
pulse_mixer_get_volume(struct mixer *mixer)
{
struct pulse_mixer *pm=(struct pulse_mixer *) mixer;
int ret;
pa_operation *o;
g_debug("get_volume %s",
pm->online == TRUE ? "online" : "offline");
if(pm->online) {
if (!(o = pa_context_get_sink_input_info(pm->context, pm->index,
sink_input_vol, pm))) {
g_debug("pa_context_get_sink_input_info() failed");
return false;
}
pa_operation_unref(o);
ret = (int)((100*(pa_cvolume_avg(pm->volume)+1))/PA_VOLUME_NORM);
g_debug("volume %d", ret);
return ret;
}
return false;
}
static bool
pulse_mixer_set_volume(struct mixer *mixer, unsigned volume)
{
struct pulse_mixer *pm=(struct pulse_mixer *) mixer;
pa_operation *o;
if (pm->online) {
pa_cvolume_set(pm->volume, (pm->volume)->channels,
(pa_volume_t)(volume)*PA_VOLUME_NORM/100+0.5);
if (!(o = pa_context_set_sink_input_volume(pm->context, pm->index,
pm->volume, NULL, NULL))) {
g_debug("pa_context_set_sink_input_volume() failed");
return false;
}
pa_operation_unref(o);
}
return true;
}
const struct mixer_plugin pulse_mixer = {
.init = pulse_mixer_init,
.finish = pulse_mixer_finish,
.open = pulse_mixer_open,
.close = pulse_mixer_close,
.get_volume = pulse_mixer_get_volume,
.set_volume = pulse_mixer_set_volume,
};
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