C++ (Cpp) pa_core_rttime_restartの例

コード例 #1

ファイル: module-loopback.c プロジェクト: freedesktop-unofficial-mirror/pulseaudio__pulseaudio.git.backup

/* Called from main context */
static void adjust_rates(struct userdata *u) {
    size_t buffer, fs;
    uint32_t old_rate, base_rate, new_rate;
    pa_usec_t buffer_latency;

    pa_assert(u);
    pa_assert_ctl_context();

    pa_asyncmsgq_send(u->source_output->source->asyncmsgq, PA_MSGOBJECT(u->source_output), SOURCE_OUTPUT_MESSAGE_LATENCY_SNAPSHOT, NULL, 0, NULL);
    pa_asyncmsgq_send(u->sink_input->sink->asyncmsgq, PA_MSGOBJECT(u->sink_input), SINK_INPUT_MESSAGE_LATENCY_SNAPSHOT, NULL, 0, NULL);

    buffer =
        u->latency_snapshot.sink_input_buffer +
        u->latency_snapshot.source_output_buffer;

    if (u->latency_snapshot.recv_counter <= u->latency_snapshot.send_counter)
        buffer += (size_t) (u->latency_snapshot.send_counter - u->latency_snapshot.recv_counter);
    else
        buffer += PA_CLIP_SUB(buffer, (size_t) (u->latency_snapshot.recv_counter - u->latency_snapshot.send_counter));

    buffer_latency = pa_bytes_to_usec(buffer, &u->sink_input->sample_spec);

    pa_log_debug("Loopback overall latency is %0.2f ms + %0.2f ms + %0.2f ms = %0.2f ms",
                (double) u->latency_snapshot.sink_latency / PA_USEC_PER_MSEC,
                (double) buffer_latency / PA_USEC_PER_MSEC,
                (double) u->latency_snapshot.source_latency / PA_USEC_PER_MSEC,
                ((double) u->latency_snapshot.sink_latency + buffer_latency + u->latency_snapshot.source_latency) / PA_USEC_PER_MSEC);

    pa_log_debug("Should buffer %zu bytes, buffered at minimum %zu bytes",
                u->latency_snapshot.max_request*2,
                u->latency_snapshot.min_memblockq_length);

    fs = pa_frame_size(&u->sink_input->sample_spec);
    old_rate = u->sink_input->sample_spec.rate;
    base_rate = u->source_output->sample_spec.rate;

    if (u->latency_snapshot.min_memblockq_length < u->latency_snapshot.max_request*2)
        new_rate = base_rate - (((u->latency_snapshot.max_request*2 - u->latency_snapshot.min_memblockq_length) / fs) *PA_USEC_PER_SEC)/u->adjust_time;
    else
        new_rate = base_rate + (((u->latency_snapshot.min_memblockq_length - u->latency_snapshot.max_request*2) / fs) *PA_USEC_PER_SEC)/u->adjust_time;

    if (new_rate < (uint32_t) (base_rate*0.8) || new_rate > (uint32_t) (base_rate*1.25)) {
        pa_log_warn("Sample rates too different, not adjusting (%u vs. %u).", base_rate, new_rate);
        new_rate = base_rate;
    } else {
        if (base_rate < new_rate + 20 && new_rate < base_rate + 20)
          new_rate = base_rate;
        /* Do the adjustment in small steps; 2‰ can be considered inaudible */
        if (new_rate < (uint32_t) (old_rate*0.998) || new_rate > (uint32_t) (old_rate*1.002)) {
            pa_log_info("New rate of %u Hz not within 2‰ of %u Hz, forcing smaller adjustment", new_rate, old_rate);
            new_rate = PA_CLAMP(new_rate, (uint32_t) (old_rate*0.998), (uint32_t) (old_rate*1.002));
        }
    }

    pa_sink_input_set_rate(u->sink_input, new_rate);
    pa_log_debug("[%s] Updated sampling rate to %lu Hz.", u->sink_input->sink->name, (unsigned long) new_rate);

    pa_core_rttime_restart(u->core, u->time_event, pa_rtclock_now() + u->adjust_time);
}

コード例 #2

ファイル: module-rtp-send.c プロジェクト: jprvita/pulseaudio

static void sap_event_cb(pa_mainloop_api *m, pa_time_event *t, const struct timeval *tv, void *userdata) {
    struct userdata *u = userdata;

    pa_assert(m);
    pa_assert(t);
    pa_assert(u);

    pa_sap_send(&u->sap_context, 0);

    pa_core_rttime_restart(u->module->core, t, pa_rtclock_now() + SAP_INTERVAL);
}

コード例 #3

ファイル: core-scache.c プロジェクト: KimT/pulseaudio_kt

static void timeout_callback(pa_mainloop_api *m, pa_time_event *e, const struct timeval *t, void *userdata) {
    pa_core *c = userdata;

    pa_assert(c);
    pa_assert(c->mainloop == m);
    pa_assert(c->scache_auto_unload_event == e);

    pa_scache_unload_unused(c);

    pa_core_rttime_restart(c, e, pa_rtclock_now() + UNLOAD_POLL_TIME);
}

コード例 #4

ファイル: module-suspend-on-idle.c プロジェクト: colinleroy/pulseaudio-wrongmerge

static void restart(struct device_info *d) {
    pa_usec_t now;

    pa_assert(d);
    pa_assert(d->sink || d->source);

    d->last_use = now = pa_rtclock_now();
    pa_core_rttime_restart(d->userdata->core, d->time_event, now + d->timeout);

    if (d->sink)
        pa_log_debug("Sink %s becomes idle, timeout in %" PRIu64 " seconds.", d->sink->name, d->timeout / PA_USEC_PER_SEC);
    if (d->source)
        pa_log_debug("Source %s becomes idle, timeout in %" PRIu64 " seconds.", d->source->name, d->timeout / PA_USEC_PER_SEC);
}

コード例 #5

ファイル: module-loopback.c プロジェクト: ford-prefect/pulseaudio

/* Called from main context */
static void time_callback(pa_mainloop_api *a, pa_time_event *e, const struct timeval *t, void *userdata) {
    struct userdata *u = userdata;

    pa_assert(u);
    pa_assert(a);
    pa_assert(u->time_event == e);

    /* Restart timer right away */
    pa_core_rttime_restart(u->core, u->time_event, pa_rtclock_now() + u->adjust_time);

    /* Get sink and source latency snapshot */
    pa_asyncmsgq_send(u->sink_input->sink->asyncmsgq, PA_MSGOBJECT(u->sink_input), SINK_INPUT_MESSAGE_LATENCY_SNAPSHOT, NULL, 0, NULL);
    pa_asyncmsgq_send(u->source_output->source->asyncmsgq, PA_MSGOBJECT(u->source_output), SOURCE_OUTPUT_MESSAGE_LATENCY_SNAPSHOT, NULL, 0, NULL);

    adjust_rates(u);
}

コード例 #6

ファイル: module-loopback.c プロジェクト: KimT/pulseaudio_kt

/* Called from main context */
static void adjust_rates(struct userdata *u) {
    size_t buffer, fs;
    uint32_t old_rate, base_rate, new_rate;
    pa_usec_t buffer_latency;

    pa_assert(u);
    pa_assert_ctl_context();

    pa_asyncmsgq_send(u->source_output->source->asyncmsgq, PA_MSGOBJECT(u->source_output), SOURCE_OUTPUT_MESSAGE_LATENCY_SNAPSHOT, NULL, 0, NULL);
    pa_asyncmsgq_send(u->sink_input->sink->asyncmsgq, PA_MSGOBJECT(u->sink_input), SINK_INPUT_MESSAGE_LATENCY_SNAPSHOT, NULL, 0, NULL);

    buffer =
        u->latency_snapshot.sink_input_buffer +
        u->latency_snapshot.source_output_buffer;

    if (u->latency_snapshot.recv_counter <= u->latency_snapshot.send_counter)
        buffer += (size_t) (u->latency_snapshot.send_counter - u->latency_snapshot.recv_counter);
    else
        buffer += PA_CLIP_SUB(buffer, (size_t) (u->latency_snapshot.recv_counter - u->latency_snapshot.send_counter));

    buffer_latency = pa_bytes_to_usec(buffer, &u->sink_input->sample_spec);

    pa_log_info("Loopback overall latency is %0.2f ms + %0.2f ms + %0.2f ms = %0.2f ms",
                (double) u->latency_snapshot.sink_latency / PA_USEC_PER_MSEC,
                (double) buffer_latency / PA_USEC_PER_MSEC,
                (double) u->latency_snapshot.source_latency / PA_USEC_PER_MSEC,
                ((double) u->latency_snapshot.sink_latency + buffer_latency + u->latency_snapshot.source_latency) / PA_USEC_PER_MSEC);

    pa_log_info("Should buffer %zu bytes, buffered at minimum %zu bytes",
                u->latency_snapshot.max_request*2,
                u->latency_snapshot.min_memblockq_length);

    fs = pa_frame_size(&u->sink_input->sample_spec);
    old_rate = u->sink_input->sample_spec.rate;
    base_rate = u->source_output->sample_spec.rate;

    if (u->latency_snapshot.min_memblockq_length < u->latency_snapshot.max_request*2)
        new_rate = base_rate - (((u->latency_snapshot.max_request*2 - u->latency_snapshot.min_memblockq_length) / fs) *PA_USEC_PER_SEC)/u->adjust_time;
    else
        new_rate = base_rate + (((u->latency_snapshot.min_memblockq_length - u->latency_snapshot.max_request*2) / fs) *PA_USEC_PER_SEC)/u->adjust_time;

    pa_log_info("Old rate %lu Hz, new rate %lu Hz", (unsigned long) old_rate, (unsigned long) new_rate);

    pa_sink_input_set_rate(u->sink_input, new_rate);

    pa_core_rttime_restart(u->core, u->time_event, pa_rtclock_now() + u->adjust_time);
}

コード例 #7

ファイル: module-suspend-on-idle.c プロジェクト: MblIIIA/pulseaudio

static void restart(struct device_info *d) {
    pa_usec_t now;
    const char *s;
    uint32_t timeout;

    pa_assert(d);
    pa_assert(d->sink || d->source);

    d->last_use = now = pa_rtclock_now();

    s = pa_proplist_gets(d->sink ? d->sink->proplist : d->source->proplist, "module-suspend-on-idle.timeout");
    if (!s || pa_atou(s, &timeout) < 0)
        timeout = d->userdata->timeout;

    pa_core_rttime_restart(d->userdata->core, d->time_event, now + timeout * PA_USEC_PER_SEC);

    if (d->sink)
        pa_log_debug("Sink %s becomes idle, timeout in %u seconds.", d->sink->name, timeout);
    if (d->source)
        pa_log_debug("Source %s becomes idle, timeout in %u seconds.", d->source->name, timeout);
}