C++ pa_assert函数代码示例

void pa_property_init(pa_core *c) {
    pa_assert(c);

    c->properties = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
}

void pa_dbus_sync_pending_list(pa_dbus_pending **p) {
    pa_assert(p);

    while (*p && dbus_connection_read_write_dispatch((*p)->connection, -1))
        ;
}

int pa__init(pa_module*m) {
    struct userdata *u = NULL;
    pa_sample_spec ss;
    pa_channel_map map;
    pa_modargs *ma = NULL;
    pa_sink_new_data data;
    size_t nbytes;

    pa_assert(m);

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

    ss = m->core->default_sample_spec;
    map = m->core->default_channel_map;
    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;
    }

    m->userdata = u = pa_xnew0(struct userdata, 1);
    u->core = m->core;
    u->module = m;
    u->rtpoll = pa_rtpoll_new();
    pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll);

    pa_sink_new_data_init(&data);
    data.driver = __FILE__;
    data.module = m;
    pa_sink_new_data_set_name(&data, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME));
    pa_sink_new_data_set_sample_spec(&data, &ss);
    pa_sink_new_data_set_channel_map(&data, &map);
    pa_proplist_sets(data.proplist, PA_PROP_DEVICE_DESCRIPTION, _("Null Output"));
    pa_proplist_sets(data.proplist, PA_PROP_DEVICE_CLASS, "abstract");

    if (pa_modargs_get_proplist(ma, "sink_properties", data.proplist, PA_UPDATE_REPLACE) < 0) {
        pa_log("Invalid properties");
        pa_sink_new_data_done(&data);
        goto fail;
    }

    u->sink = pa_sink_new(m->core, &data, PA_SINK_LATENCY|PA_SINK_DYNAMIC_LATENCY);
    pa_sink_new_data_done(&data);

    if (!u->sink) {
        pa_log("Failed to create sink object.");
        goto fail;
    }

    u->sink->parent.process_msg = sink_process_msg;
    u->sink->update_requested_latency = sink_update_requested_latency_cb;
    u->sink->userdata = u;

    pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
    pa_sink_set_rtpoll(u->sink, u->rtpoll);

    u->block_usec = BLOCK_USEC;
    nbytes = pa_usec_to_bytes(u->block_usec, &u->sink->sample_spec);
    pa_sink_set_max_rewind(u->sink, nbytes);
    pa_sink_set_max_request(u->sink, nbytes);

    if (!(u->thread = pa_thread_new("null-sink", thread_func, u))) {
        pa_log("Failed to create thread.");
        goto fail;
    }

    pa_sink_set_latency_range(u->sink, 0, BLOCK_USEC);

    pa_sink_put(u->sink);

    pa_modargs_free(ma);

    return 0;

fail:
    if (ma)
        pa_modargs_free(ma);

    pa__done(m);

    return -1;
}

pa_hook* pa_reserve_wrapper_hook(pa_reserve_wrapper *r) {
    pa_assert(r);
    pa_assert(PA_REFCNT_VALUE(r) >= 1);

    return &r->hook;
}

pa_hook* pa_reserve_monitor_wrapper_hook(pa_reserve_monitor_wrapper *w) {
    pa_assert(w);
    pa_assert(PA_REFCNT_VALUE(w) >= 1);

    return &w->hook;
}

void pa_source_new_data_set_muted(pa_source_new_data *data, pa_bool_t mute) {
    pa_assert(data);

    data->muted_is_set = TRUE;
    data->muted = !!mute;
}

pa_source *pa_droid_source_new(pa_module *m,
                                 pa_modargs *ma,
                                 const char *driver,
                                 pa_droid_card_data *card_data,
                                 pa_droid_mapping *am,
                                 pa_card *card) {

    struct userdata *u = NULL;
    char *thread_name = NULL;
    pa_source_new_data data;
    const char *module_id = NULL;
    /* const char *tmp; */
    uint32_t sample_rate;
    uint32_t alternate_sample_rate;
    audio_devices_t dev_in;
    pa_sample_spec sample_spec;
    pa_channel_map channel_map;
    bool namereg_fail = false;
    pa_droid_config_audio *config = NULL; /* Only used when source is created without card */
    uint32_t source_buffer = 0;
    char audio_source[32];
    int ret;

    audio_format_t hal_audio_format = 0;
    audio_channel_mask_t hal_channel_mask = 0;

    pa_assert(m);
    pa_assert(ma);
    pa_assert(driver);

    /* When running under card use hw module name for source by default. */
    if (card && ma)
        module_id = am->input->module->name;
    else
        module_id = pa_modargs_get_value(ma, "module_id", DEFAULT_MODULE_ID);

    sample_spec = m->core->default_sample_spec;
    channel_map = m->core->default_channel_map;

    if (pa_modargs_get_sample_spec_and_channel_map(ma, &sample_spec, &channel_map, PA_CHANNEL_MAP_AIFF) < 0) {
        pa_log("Failed to parse sample specification and channel map.");
        goto fail;
    }

    alternate_sample_rate = m->core->alternate_sample_rate;
    if (pa_modargs_get_alternate_sample_rate(ma, &alternate_sample_rate) < 0) {
        pa_log("Failed to parse alternate sample rate.");
        goto fail;
    }

    if (pa_modargs_get_value_u32(ma, "source_buffer", &source_buffer) < 0) {
        pa_log("Failed to parse source_buffer. Needs to be integer >= 0.");
        goto fail;
    }

    u = pa_xnew0(struct userdata, 1);
    u->core = m->core;
    u->module = m;
    u->card = card;
    u->rtpoll = pa_rtpoll_new();
    pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll);

    /* Enabled routing changes by default. */
    u->routing_changes_enabled = true;

    if (card_data) {
        pa_assert(card);
        u->card_data = card_data;
        pa_assert_se((u->hw_module = pa_droid_hw_module_get(u->core, NULL, card_data->module_id)));
    } else {
        /* Stand-alone source */

        if (!(config = pa_droid_config_load(ma)))
            goto fail;

        /* Ownership of config transfers to hw_module if opening of hw module succeeds. */
        if (!(u->hw_module = pa_droid_hw_module_get(u->core, config, module_id)))
            goto fail;
    }

    if (!pa_convert_format(sample_spec.format, CONV_FROM_PA, &hal_audio_format)) {
        pa_log("Sample spec format %u not supported.", sample_spec.format);
        goto fail;
    }

    for (int i = 0; i < channel_map.channels; i++) {
        audio_channel_mask_t c;
        if (!pa_convert_input_channel(channel_map.map[i], CONV_FROM_PA, &c)) {
            pa_log("Failed to convert channel map.");
            goto fail;
        }
        hal_channel_mask |= c;
    }

    struct audio_config config_in = {
        .sample_rate = sample_spec.rate,
        .channel_mask = hal_channel_mask,
        .format = hal_audio_format
    };

//.........这里部分代码省略.........

void pa_format_info_set_prop_int(pa_format_info *f, const char *key, int value) {
    pa_assert(f);
    pa_assert(key);

    pa_proplist_setf(f->plist, key, "%d", value);
}

void pa_format_info_set_prop_string(pa_format_info *f, const char *key, const char *value) {
    pa_assert(f);
    pa_assert(key);

    pa_proplist_setf(f->plist, key, "\"%s\"", value);
}

static void thread_func(void *userdata) {
    struct userdata *u = userdata;
    int read_type = 0;

    pa_assert(u);

    pa_log_debug("Thread starting up");

    pa_thread_mq_install(&u->thread_mq);

    for (;;) {
        int ret;
        struct pollfd *pollfd;

        pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);

        /* Try to read some data and pass it on to the source driver */
        if (u->source->thread_info.state == PA_SOURCE_RUNNING && pollfd->revents) {
            ssize_t l;
            void *p;

            if (!u->memchunk.memblock) {
                u->memchunk.memblock = pa_memblock_new(u->core->mempool, pa_pipe_buf(u->fd));
                u->memchunk.index = u->memchunk.length = 0;
            }

            pa_assert(pa_memblock_get_length(u->memchunk.memblock) > u->memchunk.index);

            p = pa_memblock_acquire(u->memchunk.memblock);
            l = pa_read(u->fd, (uint8_t*) p + u->memchunk.index, pa_memblock_get_length(u->memchunk.memblock) - u->memchunk.index, &read_type);
            pa_memblock_release(u->memchunk.memblock);

            pa_assert(l != 0); /* EOF cannot happen, since we opened the fifo for both reading and writing */

            if (l < 0) {

                if (errno == EINTR)
                    continue;
                else if (errno != EAGAIN) {
                    pa_log("Faile to read data from FIFO: %s", pa_cstrerror(errno));
                    goto fail;
                }

            } else {

                u->memchunk.length = (size_t) l;
                pa_source_post(u->source, &u->memchunk);
                u->memchunk.index += (size_t) l;

                if (u->memchunk.index >= pa_memblock_get_length(u->memchunk.memblock)) {
                    pa_memblock_unref(u->memchunk.memblock);
                    pa_memchunk_reset(&u->memchunk);
                }

                pollfd->revents = 0;
            }
        }

        /* Hmm, nothing to do. Let's sleep */
        pollfd->events = (short) (u->source->thread_info.state == PA_SOURCE_RUNNING ? POLLIN : 0);

        if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0)
            goto fail;

        if (ret == 0)
            goto finish;

        pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);

        if (pollfd->revents & ~POLLIN) {
            pa_log("FIFO shutdown.");
            goto fail;
        }
    }

fail:
    /* If this was no regular exit from the loop we have to continue
     * processing messages until we received PA_MESSAGE_SHUTDOWN */
    pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
    pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);

finish:
    pa_log_debug("Thread shutting down");
}

pa_prop_type_t pa_format_info_get_prop_type(const pa_format_info *f, const char *key) {
    const char *str;
    pa_json_object *o;
    const pa_json_object *o1;
    pa_prop_type_t type;

    pa_assert(f);
    pa_assert(key);

    str = pa_proplist_gets(f->plist, key);
    if (!str)
        return PA_PROP_TYPE_INVALID;

    o = pa_json_parse(str);
    if (!o)
        return PA_PROP_TYPE_INVALID;

    switch (pa_json_object_get_type(o)) {
        case PA_JSON_TYPE_INT:
            type = PA_PROP_TYPE_INT;
            break;

        case PA_JSON_TYPE_STRING:
            type = PA_PROP_TYPE_STRING;
            break;

        case PA_JSON_TYPE_ARRAY:
            if (pa_json_object_get_array_length(o) == 0) {
                /* Unlikely, but let's account for this anyway. We need at
                 * least one element to figure out the array type. */
                type = PA_PROP_TYPE_INVALID;
                break;
            }

            o1 = pa_json_object_get_array_member(o, 0);

            if (pa_json_object_get_type(o1) == PA_JSON_TYPE_INT)
                type = PA_PROP_TYPE_INT_ARRAY;
            else if (pa_json_object_get_type(o1) == PA_JSON_TYPE_STRING)
                type = PA_PROP_TYPE_STRING_ARRAY;
            else
                type = PA_PROP_TYPE_INVALID;

            break;

        case PA_JSON_TYPE_OBJECT:
            /* We actually know at this point that it's a int range, but let's
             * confirm. */
            if (!pa_json_object_get_object_member(o, PA_JSON_MIN_KEY)) {
                type = PA_PROP_TYPE_INVALID;
                break;
            }

            if (!pa_json_object_get_object_member(o, PA_JSON_MAX_KEY)) {
                type = PA_PROP_TYPE_INVALID;
                break;
            }

            type = PA_PROP_TYPE_INT_RANGE;
            break;

        default:
            type = PA_PROP_TYPE_INVALID;
            break;
    }

    pa_json_object_free(o);
    return type;
}

int pa__init(pa_module*m) {
    struct userdata *u = NULL;
    pa_sample_spec ss;
    pa_channel_map map;
    pa_modargs *ma = NULL;
    pa_source_new_data data;
    uint32_t latency_time = DEFAULT_LATENCY_TIME;

    pa_assert(m);

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

    ss = m->core->default_sample_spec;
    map = m->core->default_channel_map;
    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;
    }

    m->userdata = u = pa_xnew0(struct userdata, 1);
    u->core = m->core;
    u->module = m;
    u->rtpoll = pa_rtpoll_new();
    pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll);

    pa_source_new_data_init(&data);
    data.driver = __FILE__;
    data.module = m;
    pa_source_new_data_set_name(&data, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME));
    pa_source_new_data_set_sample_spec(&data, &ss);
    pa_source_new_data_set_channel_map(&data, &map);
    pa_proplist_sets(data.proplist, PA_PROP_DEVICE_DESCRIPTION, pa_modargs_get_value(ma, "description", "Null Input"));
    pa_proplist_sets(data.proplist, PA_PROP_DEVICE_CLASS, "abstract");

    u->source = pa_source_new(m->core, &data, PA_SOURCE_LATENCY | PA_SOURCE_DYNAMIC_LATENCY);
    pa_source_new_data_done(&data);

    if (!u->source) {
        pa_log("Failed to create source object.");
        goto fail;
    }

    u->latency_time = DEFAULT_LATENCY_TIME;
    if (pa_modargs_get_value_u32(ma, "latency_time", &latency_time) < 0) {
        pa_log("Failed to parse latency_time value.");
        goto fail;
    }
    u->latency_time = latency_time;

    u->source->parent.process_msg = source_process_msg;
    u->source->update_requested_latency = source_update_requested_latency_cb;
    u->source->userdata = u;

    pa_source_set_asyncmsgq(u->source, u->thread_mq.inq);
    pa_source_set_rtpoll(u->source, u->rtpoll);

    pa_source_set_latency_range(u->source, 0, MAX_LATENCY_USEC);
    u->block_usec = u->source->thread_info.max_latency;

    u->source->thread_info.max_rewind =
        pa_usec_to_bytes(u->block_usec, &u->source->sample_spec);

    if (!(u->thread = pa_thread_new("null-source", thread_func, u))) {
        pa_log("Failed to create thread.");
        goto fail;
    }

    pa_source_put(u->source);

    pa_modargs_free(ma);

    return 0;

fail:
    if (ma)
        pa_modargs_free(ma);

    pa__done(m);

    return -1;
}

static void io_callback(pa_mainloop_api *io, pa_io_event *e, int fd, pa_io_event_flags_t events, void*userdata) {
    struct userdata *u = userdata;
    char *name = NULL, *code = NULL;

    pa_assert(io);
    pa_assert(u);

    if (events & (PA_IO_EVENT_HANGUP|PA_IO_EVENT_ERROR)) {
        pa_log("Lost connection to LIRC daemon.");
        goto fail;
    }

    if (events & PA_IO_EVENT_INPUT) {
        char *c;

        if (lirc_nextcode(&code) != 0 || !code) {
            pa_log("lirc_nextcode() failed.");
            goto fail;
        }

        c = pa_xstrdup(code);
        c[strcspn(c, "\n\r")] = 0;
        pa_log_debug("Raw IR code '%s'", c);
        pa_xfree(c);

        while (lirc_code2char(u->config, code, &name) == 0 && name) {
            enum {
                INVALID,
                UP,
                DOWN,
                MUTE,
                RESET,
                MUTE_TOGGLE
            } volchange = INVALID;

            pa_log_info("Translated IR code '%s'", name);

            if (strcasecmp(name, "volume-up") == 0)
                volchange = UP;
            else if (strcasecmp(name, "volume-down") == 0)
                volchange = DOWN;
            else if (strcasecmp(name, "mute") == 0)
                volchange = MUTE;
            else if (strcasecmp(name, "mute-toggle") == 0)
                volchange = MUTE_TOGGLE;
            else if (strcasecmp(name, "reset") == 0)
                volchange = RESET;

            if (volchange == INVALID)
                pa_log_warn("Received unknown IR code '%s'", name);
            else {
                pa_sink *s;

                if (!(s = pa_namereg_get(u->module->core, u->sink_name, PA_NAMEREG_SINK)))
                    pa_log("Failed to get sink '%s'", u->sink_name);
                else {
                    pa_cvolume cv = *pa_sink_get_volume(s, false);

                    switch (volchange) {
                        case UP:
                            pa_cvolume_inc_clamp(&cv, u->volume_step, u->volume_limit);
                            pa_sink_set_volume(s, &cv, true, true);
                            break;

                        case DOWN:
                            pa_cvolume_dec(&cv, u->volume_step);
                            pa_sink_set_volume(s, &cv, true, true);
                            break;

                        case MUTE:
                            pa_sink_set_mute(s, true, true);
                            break;

                        case RESET:
                            pa_sink_set_mute(s, false, true);
                            break;

                        case MUTE_TOGGLE:
                            pa_sink_set_mute(s, !pa_sink_get_mute(s, false), true);
                            break;

                        case INVALID:
                            pa_assert_not_reached();
                    }
                }
            }
        }
    }

    pa_xfree(code);

    return;

fail:
    u->module->core->mainloop->io_free(u->io);
    u->io = NULL;

    pa_module_unload_request(u->module, true);

    pa_xfree(code);
//.........这里部分代码省略.........

/* Free a property object */
static void property_free(pa_property *p) {
    pa_assert(p);

    pa_xfree(p->name);
    pa_xfree(p);
}

void pa_source_new_data_set_channel_map(pa_source_new_data *data, const pa_channel_map *map) {
    pa_assert(data);

    if ((data->channel_map_is_set = !!map))
        data->channel_map = *map;
}