예제 #1
0
/* Called from main thread */
static void sink_input_moving_cb(pa_sink_input *i, pa_sink *dest) {
    struct userdata *u;
    char *output_description;
    const char *n;

    if (!dest)
        return;

    pa_sink_input_assert_ref(i);
    pa_assert_ctl_context();
    pa_assert_se(u = i->userdata);

    output_description = pa_sprintf_malloc("Loopback to %s",
                                           pa_strnull(pa_proplist_gets(dest->proplist, PA_PROP_DEVICE_DESCRIPTION)));
    pa_source_output_set_property(u->source_output, PA_PROP_MEDIA_NAME, output_description);
    pa_xfree(output_description);

    if ((n = pa_proplist_gets(dest->proplist, PA_PROP_DEVICE_ICON_NAME)))
        pa_source_output_set_property(u->source_output, PA_PROP_MEDIA_ICON_NAME, n);

    if (pa_sink_get_state(dest) == PA_SINK_SUSPENDED)
        pa_source_output_cork(u->source_output, true);
    else
        pa_source_output_cork(u->source_output, false);

    update_adjust_timer(u);
}
예제 #2
0
/* Called from main thread */
static void sink_input_moving_cb(pa_sink_input *i, pa_sink *dest) {
    struct userdata *u;
    pa_proplist *p;
    const char *n;

    if (!dest)
        return;

    pa_sink_input_assert_ref(i);
    pa_assert_ctl_context();
    pa_assert_se(u = i->userdata);

    p = pa_proplist_new();
    pa_proplist_setf(p, PA_PROP_MEDIA_NAME, "Loopback to %s", pa_strnull(pa_proplist_gets(dest->proplist, PA_PROP_DEVICE_DESCRIPTION)));

    if ((n = pa_proplist_gets(dest->proplist, PA_PROP_DEVICE_ICON_NAME)))
        pa_proplist_sets(p, PA_PROP_MEDIA_ICON_NAME, n);

    pa_source_output_update_proplist(u->source_output, PA_UPDATE_REPLACE, p);
    pa_proplist_free(p);

    if (pa_sink_get_state(dest) == PA_SINK_SUSPENDED)
        pa_source_output_cork(u->source_output, true);
    else
        pa_source_output_cork(u->source_output, false);

    update_adjust_timer(u);
}
/* Called from main thread */
static void sink_input_suspend_cb(pa_sink_input *i, pa_bool_t suspended) {
    struct userdata *u;

    pa_sink_input_assert_ref(i);
    pa_assert_ctl_context();
    pa_assert_se(u = i->userdata);

    pa_source_output_cork(u->source_output, suspended);

    update_adjust_timer(u);
}
int pa__init(pa_module *m) {
    pa_modargs *ma = NULL;
    struct userdata *u;
    pa_sink *sink = NULL;
    pa_sink_input_new_data sink_input_data;
    pa_bool_t sink_dont_move;
    pa_source *source = NULL;
    pa_source_output_new_data source_output_data;
    pa_bool_t source_dont_move;
    uint32_t latency_msec;
    pa_sample_spec ss;
    pa_channel_map map;
    bool format_set = false;
    bool rate_set = false;
    bool channels_set = false;
    pa_memchunk silence;
    uint32_t adjust_time_sec;
    const char *n;
    pa_bool_t remix = TRUE;

    pa_assert(m);

    if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
        pa_log("Failed to parse module arguments");
        goto fail;
    }

    n = pa_modargs_get_value(ma, "source", NULL);
    if (n && !(source = pa_namereg_get(m->core, n, PA_NAMEREG_SOURCE))) {
        pa_log("No such source.");
        goto fail;
    }

    n = pa_modargs_get_value(ma, "sink", NULL);
    if (n && !(sink = pa_namereg_get(m->core, n, PA_NAMEREG_SINK))) {
        pa_log("No such sink.");
        goto fail;
    }

    if (pa_modargs_get_value_boolean(ma, "remix", &remix) < 0) {
        pa_log("Invalid boolean remix parameter");
        goto fail;
    }

    if (sink) {
        ss = sink->sample_spec;
        map = sink->channel_map;
        format_set = true;
        rate_set = true;
        channels_set = true;
    } else if (source) {
        ss = source->sample_spec;
        map = source->channel_map;
        format_set = true;
        rate_set = true;
        channels_set = true;
    } else {
        /* FIXME: Dummy stream format, needed because pa_sink_input_new()
         * requires valid sample spec and channel map even when all the FIX_*
         * stream flags are specified. pa_sink_input_new() should be changed
         * to ignore the sample spec and channel map when the FIX_* flags are
         * present. */
        ss.format = PA_SAMPLE_U8;
        ss.rate = 8000;
        ss.channels = 1;
        map.channels = 1;
        map.map[0] = PA_CHANNEL_POSITION_MONO;
    }

    if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_DEFAULT) < 0) {
        pa_log("Invalid sample format specification or channel map");
        goto fail;
    }

    if (pa_modargs_get_value(ma, "format", NULL))
        format_set = true;

    if (pa_modargs_get_value(ma, "rate", NULL))
        rate_set = true;

    if (pa_modargs_get_value(ma, "channels", NULL) || pa_modargs_get_value(ma, "channel_map", NULL))
        channels_set = true;

    latency_msec = DEFAULT_LATENCY_MSEC;
    if (pa_modargs_get_value_u32(ma, "latency_msec", &latency_msec) < 0 || latency_msec < 1 || latency_msec > 2000) {
        pa_log("Invalid latency specification");
        goto fail;
    }

    m->userdata = u = pa_xnew0(struct userdata, 1);
    u->core = m->core;
    u->module = m;
    u->latency = (pa_usec_t) latency_msec * PA_USEC_PER_MSEC;

    adjust_time_sec = DEFAULT_ADJUST_TIME_USEC / PA_USEC_PER_SEC;
    if (pa_modargs_get_value_u32(ma, "adjust_time", &adjust_time_sec) < 0) {
        pa_log("Failed to parse adjust_time value");
        goto fail;
    }

    if (adjust_time_sec != DEFAULT_ADJUST_TIME_USEC / PA_USEC_PER_SEC)
        u->adjust_time = adjust_time_sec * PA_USEC_PER_SEC;
    else
        u->adjust_time = DEFAULT_ADJUST_TIME_USEC;

    pa_sink_input_new_data_init(&sink_input_data);
    sink_input_data.driver = __FILE__;
    sink_input_data.module = m;

    if (sink)
        pa_sink_input_new_data_set_sink(&sink_input_data, sink, FALSE);

    if (pa_modargs_get_proplist(ma, "sink_input_properties", sink_input_data.proplist, PA_UPDATE_REPLACE) < 0) {
        pa_log("Failed to parse the sink_input_properties value.");
        pa_sink_input_new_data_done(&sink_input_data);
        goto fail;
    }

    if (!pa_proplist_contains(sink_input_data.proplist, PA_PROP_MEDIA_ROLE))
        pa_proplist_sets(sink_input_data.proplist, PA_PROP_MEDIA_ROLE, "abstract");

    pa_sink_input_new_data_set_sample_spec(&sink_input_data, &ss);
    pa_sink_input_new_data_set_channel_map(&sink_input_data, &map);
    sink_input_data.flags = PA_SINK_INPUT_VARIABLE_RATE | PA_SINK_INPUT_START_CORKED;

    if (!remix)
        sink_input_data.flags |= PA_SINK_INPUT_NO_REMIX;

    if (!format_set)
        sink_input_data.flags |= PA_SINK_INPUT_FIX_FORMAT;

    if (!rate_set)
        sink_input_data.flags |= PA_SINK_INPUT_FIX_RATE;

    if (!channels_set)
        sink_input_data.flags |= PA_SINK_INPUT_FIX_CHANNELS;

    sink_dont_move = FALSE;
    if (pa_modargs_get_value_boolean(ma, "sink_dont_move", &sink_dont_move) < 0) {
        pa_log("sink_dont_move= expects a boolean argument.");
        goto fail;
    }

    if (sink_dont_move)
        sink_input_data.flags |= PA_SINK_INPUT_DONT_MOVE;

    pa_sink_input_new(&u->sink_input, m->core, &sink_input_data);
    pa_sink_input_new_data_done(&sink_input_data);

    if (!u->sink_input)
        goto fail;

    /* If format, rate or channels were originally unset, they are set now
     * after the pa_sink_input_new() call. */
    ss = u->sink_input->sample_spec;
    map = u->sink_input->channel_map;

    u->sink_input->parent.process_msg = sink_input_process_msg_cb;
    u->sink_input->pop = sink_input_pop_cb;
    u->sink_input->process_rewind = sink_input_process_rewind_cb;
    u->sink_input->kill = sink_input_kill_cb;
    u->sink_input->state_change = sink_input_state_change_cb;
    u->sink_input->attach = sink_input_attach_cb;
    u->sink_input->detach = sink_input_detach_cb;
    u->sink_input->update_max_rewind = sink_input_update_max_rewind_cb;
    u->sink_input->update_max_request = sink_input_update_max_request_cb;
    u->sink_input->may_move_to = sink_input_may_move_to_cb;
    u->sink_input->moving = sink_input_moving_cb;
    u->sink_input->suspend = sink_input_suspend_cb;
    u->sink_input->userdata = u;

    pa_sink_input_set_requested_latency(u->sink_input, u->latency/3);

    pa_source_output_new_data_init(&source_output_data);
    source_output_data.driver = __FILE__;
    source_output_data.module = m;
    if (source)
        pa_source_output_new_data_set_source(&source_output_data, source, FALSE);

    if (pa_modargs_get_proplist(ma, "source_output_properties", source_output_data.proplist, PA_UPDATE_REPLACE) < 0) {
        pa_log("Failed to parse the source_output_properties value.");
        pa_source_output_new_data_done(&source_output_data);
        goto fail;
    }

    if (!pa_proplist_contains(source_output_data.proplist, PA_PROP_MEDIA_ROLE))
        pa_proplist_sets(source_output_data.proplist, PA_PROP_MEDIA_ROLE, "abstract");

    pa_source_output_new_data_set_sample_spec(&source_output_data, &ss);
    pa_source_output_new_data_set_channel_map(&source_output_data, &map);
    source_output_data.flags = PA_SOURCE_OUTPUT_START_CORKED;

    if (!remix)
        source_output_data.flags |= PA_SOURCE_OUTPUT_NO_REMIX;

    source_dont_move = FALSE;
    if (pa_modargs_get_value_boolean(ma, "source_dont_move", &source_dont_move) < 0) {
        pa_log("source_dont_move= expects a boolean argument.");
        goto fail;
    }

    if (source_dont_move)
        source_output_data.flags |= PA_SOURCE_OUTPUT_DONT_MOVE;

    pa_source_output_new(&u->source_output, m->core, &source_output_data);
    pa_source_output_new_data_done(&source_output_data);

    if (!u->source_output)
        goto fail;

    u->source_output->parent.process_msg = source_output_process_msg_cb;
    u->source_output->push = source_output_push_cb;
    u->source_output->process_rewind = source_output_process_rewind_cb;
    u->source_output->kill = source_output_kill_cb;
    u->source_output->attach = source_output_attach_cb;
    u->source_output->detach = source_output_detach_cb;
    u->source_output->state_change = source_output_state_change_cb;
    u->source_output->may_move_to = source_output_may_move_to_cb;
    u->source_output->moving = source_output_moving_cb;
    u->source_output->suspend = source_output_suspend_cb;
    u->source_output->userdata = u;

    pa_source_output_set_requested_latency(u->source_output, u->latency/3);

    pa_sink_input_get_silence(u->sink_input, &silence);
    u->memblockq = pa_memblockq_new(
            "module-loopback memblockq",
            0,                      /* idx */
            MEMBLOCKQ_MAXLENGTH,    /* maxlength */
            MEMBLOCKQ_MAXLENGTH,    /* tlength */
            &ss,                    /* sample_spec */
            0,                      /* prebuf */
            0,                      /* minreq */
            0,                      /* maxrewind */
            &silence);              /* silence frame */
    pa_memblock_unref(silence.memblock);

    u->asyncmsgq = pa_asyncmsgq_new(0);

    if (!pa_proplist_contains(u->source_output->proplist, PA_PROP_MEDIA_NAME))
        pa_proplist_setf(u->source_output->proplist, PA_PROP_MEDIA_NAME, "Loopback to %s",
                         pa_strnull(pa_proplist_gets(u->sink_input->sink->proplist, PA_PROP_DEVICE_DESCRIPTION)));

    if (!pa_proplist_contains(u->source_output->proplist, PA_PROP_MEDIA_ICON_NAME)
            && (n = pa_proplist_gets(u->sink_input->sink->proplist, PA_PROP_DEVICE_ICON_NAME)))
        pa_proplist_sets(u->source_output->proplist, PA_PROP_MEDIA_ICON_NAME, n);

    if (!pa_proplist_contains(u->sink_input->proplist, PA_PROP_MEDIA_NAME))
        pa_proplist_setf(u->sink_input->proplist, PA_PROP_MEDIA_NAME, "Loopback from %s",
                         pa_strnull(pa_proplist_gets(u->source_output->source->proplist, PA_PROP_DEVICE_DESCRIPTION)));

    if (source && !pa_proplist_contains(u->sink_input->proplist, PA_PROP_MEDIA_ICON_NAME)
            && (n = pa_proplist_gets(u->source_output->source->proplist, PA_PROP_DEVICE_ICON_NAME)))
        pa_proplist_sets(u->sink_input->proplist, PA_PROP_MEDIA_ICON_NAME, n);

    pa_sink_input_put(u->sink_input);
    pa_source_output_put(u->source_output);

    if (pa_source_get_state(u->source_output->source) != PA_SOURCE_SUSPENDED)
	    pa_sink_input_cork(u->sink_input, FALSE);

    if (pa_sink_get_state(u->sink_input->sink) != PA_SINK_SUSPENDED)
	    pa_source_output_cork(u->source_output, FALSE);

    update_adjust_timer(u);

    pa_modargs_free(ma);
    return 0;

fail:
    if (ma)
        pa_modargs_free(ma);

    pa__done(m);

    return -1;
}