C++ pa_hashmap_get函数代码示例

static pa_hook_result_t source_output_fixate_hook_cb(pa_core *c, pa_source_output_new_data *data, struct userdata *u) {
    struct device_info *d;

    pa_assert(c);
    pa_assert(data);
    pa_assert(u);

    if (data->source->monitor_of)
        d = pa_hashmap_get(u->device_infos, data->source->monitor_of);
    else
        d = pa_hashmap_get(u->device_infos, data->source);

    if (d) {
        resume(d);
        if (d->source) {
            if (pa_source_check_suspend(d->source) <= 0)
                restart(d);
        } else {
            /* The source output is connected to a monitor source. */
            pa_assert(d->sink);
            if (pa_sink_check_suspend(d->sink) <= 0)
                restart(d);
        }
    }

    return PA_HOOK_OK;
}

/* Self-locked */
pa_memblock* pa_memimport_get(pa_memimport *i, uint32_t block_id, uint32_t shm_id, size_t offset, size_t size) {
    pa_memblock *b = NULL;
    pa_memimport_segment *seg;

    pa_assert(i);

    pa_mutex_lock(i->mutex);

    if ((b = pa_hashmap_get(i->blocks, PA_UINT32_TO_PTR(block_id)))) {
        pa_memblock_ref(b);
        goto finish;
    }

    if (pa_hashmap_size(i->blocks) >= PA_MEMIMPORT_SLOTS_MAX)
        goto finish;

    if (!(seg = pa_hashmap_get(i->segments, PA_UINT32_TO_PTR(shm_id))))
        if (!(seg = segment_attach(i, shm_id)))
            goto finish;

    if (offset+size > seg->memory.size)
        goto finish;

    if (!(b = pa_flist_pop(PA_STATIC_FLIST_GET(unused_memblocks))))
        b = pa_xnew(pa_memblock, 1);

    PA_REFCNT_INIT(b);
    b->pool = i->pool;
    b->type = PA_MEMBLOCK_IMPORTED;
    b->read_only = true;
    b->is_silence = false;
    pa_atomic_ptr_store(&b->data, (uint8_t*) seg->memory.ptr + offset);
    b->length = size;
    pa_atomic_store(&b->n_acquired, 0);
    pa_atomic_store(&b->please_signal, 0);
    b->per_type.imported.id = block_id;
    b->per_type.imported.segment = seg;

    pa_hashmap_put(i->blocks, PA_UINT32_TO_PTR(block_id), b);

    seg->n_blocks++;

    stat_add(b);

finish:
    pa_mutex_unlock(i->mutex);

    return b;
}

static pa_hook_result_t device_state_changed_hook_cb(pa_core *c, pa_object *o, struct userdata *u) {
    struct device_info *d;

    pa_assert(c);
    pa_object_assert_ref(o);
    pa_assert(u);

    if (!(d = pa_hashmap_get(u->device_infos, o)))
        return PA_HOOK_OK;

    if (pa_sink_isinstance(o)) {
        pa_sink *s = PA_SINK(o);
        pa_sink_state_t state = pa_sink_get_state(s);

        if (pa_sink_check_suspend(s) <= 0)
            if (PA_SINK_IS_OPENED(state))
                restart(d);

    } else if (pa_source_isinstance(o)) {
        pa_source *s = PA_SOURCE(o);
        pa_source_state_t state = pa_source_get_state(s);

        if (pa_source_check_suspend(s) <= 0)
            if (PA_SOURCE_IS_OPENED(state))
                restart(d);
    }

    return PA_HOOK_OK;
}

static void pstream_memblock_callback(pa_pstream *p, uint32_t channel, int64_t offset, pa_seek_mode_t seek, const pa_memchunk *chunk, void *userdata) {
    pa_context *c = userdata;
    pa_stream *s;

    pa_assert(p);
    pa_assert(chunk);
    pa_assert(chunk->length > 0);
    pa_assert(c);
    pa_assert(PA_REFCNT_VALUE(c) >= 1);

    pa_context_ref(c);

    if ((s = pa_hashmap_get(c->record_streams, PA_UINT32_TO_PTR(channel)))) {

        if (chunk->memblock) {
            pa_memblockq_seek(s->record_memblockq, offset, seek, TRUE);
            pa_memblockq_push_align(s->record_memblockq, chunk);
        } else
            pa_memblockq_seek(s->record_memblockq, offset+chunk->length, seek, TRUE);

        if (s->read_callback) {
            size_t l;

            if ((l = pa_memblockq_get_length(s->record_memblockq)) > 0)
                s->read_callback(s, l, s->read_userdata);
        }
    }

    pa_context_unref(c);
}

static struct service *get_service(struct userdata *u, pa_object *device) {
    struct service *s;
    char *hn, *un;
    const char *n;

    pa_assert(u);
    pa_object_assert_ref(device);

    if ((s = pa_hashmap_get(u->services, device)))
        return s;

    s = pa_xnew0(struct service, 1);
    s->userdata = u;
    s->device = device;

    if (pa_sink_isinstance(device)) {
        if (!(n = pa_proplist_gets(PA_SINK(device)->proplist, PA_PROP_DEVICE_DESCRIPTION)))
            n = PA_SINK(device)->name;
    } else {
        if (!(n = pa_proplist_gets(PA_SOURCE(device)->proplist, PA_PROP_DEVICE_DESCRIPTION)))
            n = PA_SOURCE(device)->name;
    }

    hn = pa_get_host_name_malloc();
    un = pa_get_user_name_malloc();

    s->service_name = pa_truncate_utf8(pa_sprintf_malloc("%[email protected]%s: %s", un, hn, n), kDNSServiceMaxDomainName-1);

    pa_xfree(un);
    pa_xfree(hn);

    pa_hashmap_put(u->services, s->device, s);

    return s;
}

static pa_autoload_entry* entry_new(pa_core *c, const char *name) {
    pa_autoload_entry *e = NULL;

    pa_core_assert_ref(c);
    pa_assert(name);

    if (c->autoload_hashmap && (e = pa_hashmap_get(c->autoload_hashmap, name)))
        return NULL;

    e = pa_xnew(pa_autoload_entry, 1);
    e->core = c;
    e->name = pa_xstrdup(name);
    e->module = e->argument = NULL;
    e->in_action = 0;

    if (!c->autoload_hashmap)
        c->autoload_hashmap = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
    pa_assert(c->autoload_hashmap);

    pa_hashmap_put(c->autoload_hashmap, e->name, e);

    if (!c->autoload_idxset)
        c->autoload_idxset = pa_idxset_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
    pa_idxset_put(c->autoload_idxset, e, &e->index);

    pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_AUTOLOAD|PA_SUBSCRIPTION_EVENT_NEW, e->index);

    return e;
}

static pa_hook_result_t source_output_fixate_hook_cb(pa_core *c, pa_source_output_new_data *data, struct userdata *u) {
    struct device_info *d;

    pa_assert(c);
    pa_assert(data);
    pa_assert(u);

    if (data->source->monitor_of)
        d = pa_hashmap_get(u->device_infos, data->source->monitor_of);
    else
        d = pa_hashmap_get(u->device_infos, data->source);

    if (d)
        resume(d);

    return PA_HOOK_OK;
}

static pa_hook_result_t source_output_state_changed_hook_cb(pa_core *c, pa_source_output *s, struct userdata *u) {
    pa_assert(c);
    pa_source_output_assert_ref(s);
    pa_assert(u);

    if (pa_source_output_get_state(s) == PA_SOURCE_OUTPUT_RUNNING) {
        struct device_info *d;

        if (s->source->monitor_of)
            d = pa_hashmap_get(u->device_infos, s->source->monitor_of);
        else
            d = pa_hashmap_get(u->device_infos, s->source);

        if (d)
            resume(d);
    }

    return PA_HOOK_OK;
}

const pa_autoload_entry* pa_autoload_get_by_name(pa_core *c, const char*name, pa_namereg_type_t type) {
    pa_autoload_entry *e;

    pa_core_assert_ref(c);
    pa_assert(name);

    if (!c->autoload_hashmap || !(e = pa_hashmap_get(c->autoload_hashmap, name)) || e->type != type)
        return NULL;

    return e;
}

static pa_hook_result_t source_output_move_start_hook_cb(pa_core *c, pa_source_output *s, struct userdata *u) {
    struct device_info *d = NULL;

    pa_assert(c);
    pa_source_output_assert_ref(s);
    pa_assert(u);

    if (s->source->monitor_of) {
        if (pa_sink_check_suspend(s->source->monitor_of) <= 1)
            d = pa_hashmap_get(u->device_infos, s->source->monitor_of);
    } else {
        if (pa_source_check_suspend(s->source) <= 1)
            d = pa_hashmap_get(u->device_infos, s->source);
    }

    if (d)
        restart(d);

    return PA_HOOK_OK;
}

static void card_changed(struct userdata *u, struct udev_device *dev) {
    struct device *d;
    const char *path;
    const char *t;
    char *n;

    pa_assert(u);
    pa_assert(dev);

    /* Maybe /dev/snd is now available? */
    setup_inotify(u);

    path = udev_device_get_devpath(dev);

    if ((d = pa_hashmap_get(u->devices, path))) {
        verify_access(u, d);
        return;
    }

    d = pa_xnew0(struct device, 1);
    d->path = pa_xstrdup(path);
    d->module = PA_INVALID_INDEX;
    PA_INIT_RATELIMIT(d->ratelimit, 10*PA_USEC_PER_SEC, 5);

    if (!(t = udev_device_get_property_value(dev, "PULSE_NAME")))
        if (!(t = udev_device_get_property_value(dev, "ID_ID")))
            if (!(t = udev_device_get_property_value(dev, "ID_PATH")))
                t = path_get_card_id(path);

    n = pa_namereg_make_valid_name(t);
    d->card_name = pa_sprintf_malloc("alsa_card.%s", n);
    d->args = pa_sprintf_malloc("device_id=\"%s\" "
                                "name=\"%s\" "
                                "card_name=\"%s\" "
                                "namereg_fail=false "
                                "tsched=%s "
                                "fixed_latency_range=%s "
                                "ignore_dB=%s "
                                "deferred_volume=%s "
                                "use_ucm=1 "
                                "card_properties=\"module-udev-detect.discovered=1\"",
                                path_get_card_id(path),
                                n,
                                d->card_name,
                                pa_yes_no(u->use_tsched),
                                pa_yes_no(u->fixed_latency_range),
                                pa_yes_no(u->ignore_dB),
                                pa_yes_no(u->deferred_volume));
    pa_xfree(n);

    pa_hashmap_put(u->devices, d->path, d);

    verify_access(u, d);
}

static pa_hook_result_t device_unlink_cb(pa_core *c, pa_object *o, struct userdata *u) {
    struct service *s;

    pa_assert(c);
    pa_object_assert_ref(o);

    if ((s = pa_hashmap_get(u->services, o)))
        service_free(s);

    return PA_HOOK_OK;
}

int pa_headerlist_puts(pa_headerlist *p, const char *key, const char *value) {
    struct header *hdr;
    bool add = false;

    pa_assert(p);
    pa_assert(key);

    if (!(hdr = pa_hashmap_get(MAKE_HASHMAP(p), key))) {
        hdr = pa_xnew(struct header, 1);
        hdr->key = pa_xstrdup(key);
        add = true;
    } else

void* pa_property_get(pa_core *c, const char *name) {
    pa_property *p;

    pa_assert(c);
    pa_assert(name);
    pa_assert(c->properties);

    if (!(p = pa_hashmap_get(c->properties, name)))
        return NULL;

    return p->data;
}

void* pa_shared_get(pa_core *c, const char *name) {
    pa_shared *p;

    pa_assert(c);
    pa_assert(name);
    pa_assert(c->shared);

    if (!(p = pa_hashmap_get(c->shared, name)))
        return NULL;

    return p->data;
}