C++ (Cpp) pa_source_output_set_requested_latency_within_thread示例

示例#1

文件： voice-voip-source.c 项目： maemo-foss/maemo-multimedia-pulseaudio-modules-meego

/* Called from I/O thread context */
static void voip_source_update_requested_latency(pa_source *s) {
    struct userdata *u;

    pa_source_assert_ref(s);
    pa_assert_se(u = s->userdata);

    /* Just hand this one over to the master source */
    pa_source_output_set_requested_latency_within_thread(
            u->hw_source_output,
            voice_source_get_requested_latency(s, u->raw_source));
}

示例#2

文件： module-virtual-source.c 项目： KimT/pulseaudio_kt

/* Called from I/O thread context */
static void source_update_requested_latency_cb(pa_source *s) {
    struct userdata *u;

    pa_source_assert_ref(s);
    pa_assert_se(u = s->userdata);

    if (!PA_SOURCE_IS_LINKED(u->source->thread_info.state) ||
        !PA_SOURCE_OUTPUT_IS_LINKED(u->source_output->thread_info.state))
        return;

    /* Just hand this one over to the master source */
    pa_source_output_set_requested_latency_within_thread(
            u->source_output,
            pa_source_get_requested_latency_within_thread(s));
}

示例#3

文件： source-output.c 项目： felfert/pulseaudio

/* Called from IO thread context, except when it is not */
int pa_source_output_process_msg(pa_msgobject *mo, int code, void *userdata, int64_t offset, pa_memchunk* chunk) {
    pa_source_output *o = PA_SOURCE_OUTPUT(mo);
    pa_source_output_assert_ref(o);

    switch (code) {

        case PA_SOURCE_OUTPUT_MESSAGE_GET_LATENCY: {
            pa_usec_t *r = userdata;

            r[0] += pa_bytes_to_usec(pa_memblockq_get_length(o->thread_info.delay_memblockq), &o->source->sample_spec);
            r[1] += pa_source_get_latency_within_thread(o->source);

            return 0;
        }

        case PA_SOURCE_OUTPUT_MESSAGE_SET_RATE:

            o->thread_info.sample_spec.rate = PA_PTR_TO_UINT(userdata);
            pa_resampler_set_output_rate(o->thread_info.resampler, PA_PTR_TO_UINT(userdata));
            return 0;

        case PA_SOURCE_OUTPUT_MESSAGE_SET_STATE:

            pa_source_output_set_state_within_thread(o, PA_PTR_TO_UINT(userdata));
            return 0;

        case PA_SOURCE_OUTPUT_MESSAGE_SET_REQUESTED_LATENCY: {
            pa_usec_t *usec = userdata;

            *usec = pa_source_output_set_requested_latency_within_thread(o, *usec);

            return 0;
        }

        case PA_SOURCE_OUTPUT_MESSAGE_GET_REQUESTED_LATENCY: {
            pa_usec_t *r = userdata;

            *r = o->thread_info.requested_source_latency;
            return 0;
        }
    }

    return -PA_ERR_NOTIMPLEMENTED;
}