95 lines
2.1 KiB
C
95 lines
2.1 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <pulse/pulseaudio.h>
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#include <unistd.h>
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static char *default_label = "";
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static char *label = NULL;
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static char *device_name = NULL;
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static void
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sinkcbk(pa_context *ctx, const pa_sink_info *i, int eol, void *userdata)
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{
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if(!i)
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return;
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float volume = (float)pa_cvolume_avg(&i->volume) / (float)PA_VOLUME_NORM;
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if(i->mute)
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printf("MUTE\n");
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else
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printf("%s%0.0f\n", label, volume * 100);
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fflush(stdout);
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}
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static void
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eventcbk(pa_context *ctx, pa_subscription_event_type_t t, uint32_t idx, void *data)
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{
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pa_operation *op = NULL;
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if((t & (PA_SUBSCRIPTION_EVENT_SERVER | PA_SUBSCRIPTION_EVENT_CHANGE)))
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op = pa_context_get_sink_info_by_name(ctx, device_name, sinkcbk, data);
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if(op)
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pa_operation_unref(op);
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}
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static void
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servercbk(pa_context *ctx, const pa_server_info *i, void *user)
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{
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device_name = strdup(i->default_sink_name);
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}
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int
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main(int argc, char *argv[])
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{
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int c;
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pa_mainloop *mloop;
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pa_mainloop_api *mloopapi;
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pa_context *ctx;
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pa_context_state_t state;
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pa_operation *op;
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label = default_label;
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while((c = getopt(argc, argv, "d:l:")) > 0) {
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switch(c) {
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case 'd':
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device_name = strdup(optarg);
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break;
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case 'l':
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label = strdup(optarg);
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break;
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}
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}
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mloop = pa_mainloop_new();
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mloopapi = pa_mainloop_get_api(mloop);
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ctx = pa_context_new(mloopapi, "DWMstatus audio");
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pa_context_connect(ctx, NULL, 0, NULL);
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/* wait until ready */
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while((state = pa_context_get_state(ctx)) != PA_CONTEXT_READY) {
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switch(state) {
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case PA_CONTEXT_FAILED:
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case PA_CONTEXT_TERMINATED:
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goto end;
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default: ;/* do nothing */
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}
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pa_mainloop_iterate(mloop, 1, NULL);
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}
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op = pa_context_get_server_info(ctx, servercbk, NULL);
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pa_operation_unref(op);
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pa_context_set_subscribe_callback(ctx, eventcbk, NULL);
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pa_context_subscribe(ctx, PA_SUBSCRIPTION_EVENT_SERVER | PA_SUBSCRIPTION_EVENT_CHANGE, NULL, NULL);
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eventcbk(ctx, PA_SUBSCRIPTION_EVENT_SERVER | PA_SUBSCRIPTION_EVENT_CHANGE, 0, NULL);
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pa_mainloop_run(mloop, NULL);
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end:
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pa_context_disconnect(ctx);
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pa_context_unref(ctx);
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pa_mainloop_free(mloop);
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return 0;
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}
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