static void
gst_buffer_pool_init (GstBufferPool * pool)
{
GstBufferPoolPrivate *priv;
priv = pool->priv = GST_BUFFER_POOL_GET_PRIVATE (pool);
g_rec_mutex_init (&priv->rec_lock);
priv->poll = gst_poll_new_timer ();
priv->queue = gst_atomic_queue_new (10);
pool->flushing = 1;
priv->active = FALSE;
priv->configured = FALSE;
priv->started = FALSE;
priv->config = gst_structure_new_id_empty (GST_QUARK (BUFFER_POOL_CONFIG));
gst_buffer_pool_config_set_params (priv->config, NULL, 0, 0, 0);
priv->allocator = NULL;
gst_allocation_params_init (&priv->params);
gst_buffer_pool_config_set_allocator (priv->config, priv->allocator,
&priv->params);
gst_poll_write_control (priv->poll);
GST_DEBUG_OBJECT (pool, "created");
}
/**
* gst_event_writable_structure:
* @event: The #GstEvent.
*
* Get a writable version of the structure.
*
* Returns: The structure of the event. The structure is still
* owned by the event, which means that you should not free it and
* that the pointer becomes invalid when you free the event.
* This function checks if @event is writable and will never return NULL.
*
* MT safe.
*/
GstStructure *
gst_event_writable_structure (GstEvent * event)
{
GstStructure *structure;
g_return_val_if_fail (GST_IS_EVENT (event), NULL);
g_return_val_if_fail (gst_event_is_writable (event), NULL);
structure = GST_EVENT_STRUCTURE (event);
if (structure == NULL) {
structure =
gst_structure_new_id_empty (gst_event_type_to_quark (GST_EVENT_TYPE
(event)));
gst_structure_set_parent_refcount (structure, &event->mini_object.refcount);
GST_EVENT_STRUCTURE (event) = structure;
}
return structure;
}
/*
* Takes caps and copies its video fields to tmpl_caps
*/
static GstCaps *
__gst_video_element_proxy_caps (GstElement * element, GstCaps * templ_caps,
GstCaps * caps)
{
GstCaps *result = gst_caps_new_empty ();
gint i, j;
gint templ_caps_size = gst_caps_get_size (templ_caps);
gint caps_size = gst_caps_get_size (caps);
for (i = 0; i < templ_caps_size; i++) {
GQuark q_name =
gst_structure_get_name_id (gst_caps_get_structure (templ_caps, i));
GstCapsFeatures *features = gst_caps_get_features (templ_caps, i);
for (j = 0; j < caps_size; j++) {
const GstStructure *caps_s = gst_caps_get_structure (caps, j);
const GValue *val;
GstStructure *s;
GstCaps *tmp = gst_caps_new_empty ();
s = gst_structure_new_id_empty (q_name);
if ((val = gst_structure_get_value (caps_s, "width")))
gst_structure_set_value (s, "width", val);
if ((val = gst_structure_get_value (caps_s, "height")))
gst_structure_set_value (s, "height", val);
if ((val = gst_structure_get_value (caps_s, "framerate")))
gst_structure_set_value (s, "framerate", val);
if ((val = gst_structure_get_value (caps_s, "pixel-aspect-ratio")))
gst_structure_set_value (s, "pixel-aspect-ratio", val);
if ((val = gst_structure_get_value (caps_s, "colorimetry")))
gst_structure_set_value (s, "colorimetry", val);
if ((val = gst_structure_get_value (caps_s, "chroma-site")))
gst_structure_set_value (s, "chroma-site", val);
gst_caps_append_structure_full (tmp, s,
gst_caps_features_copy (features));
result = gst_caps_merge (result, tmp);
}
}
return result;
}
/**
* gst_context_new:
* @context_type: Context type
* @persistent: Persistent context
*
* Create a new context.
*
* Returns: (transfer full): The new context.
*
* Since: 1.2
*/
GstContext *
gst_context_new (const gchar * context_type, gboolean persistent)
{
GstContext *context;
GstStructure *structure;
g_return_val_if_fail (context_type != NULL, NULL);
context = g_slice_new0 (GstContext);
GST_CAT_LOG (GST_CAT_CONTEXT, "creating new context %p", context);
structure = gst_structure_new_id_empty (GST_QUARK (CONTEXT));
gst_structure_set_parent_refcount (structure, &context->mini_object.refcount);
gst_context_init (context);
context->context_type = g_strdup (context_type);
GST_CONTEXT_STRUCTURE (context) = structure;
context->persistent = persistent;
return context;
}
/*
* Takes caps and copies its audio fields to tmpl_caps
*/
static GstCaps *
__gst_audio_element_proxy_caps (GstElement * element, GstCaps * templ_caps,
GstCaps * caps)
{
GstCaps *result = gst_caps_new_empty ();
gint i, j;
gint templ_caps_size = gst_caps_get_size (templ_caps);
gint caps_size = gst_caps_get_size (caps);
for (i = 0; i < templ_caps_size; i++) {
GQuark q_name =
gst_structure_get_name_id (gst_caps_get_structure (templ_caps, i));
GstCapsFeatures *features = gst_caps_get_features (templ_caps, i);
for (j = 0; j < caps_size; j++) {
const GstStructure *caps_s = gst_caps_get_structure (caps, j);
const GValue *val;
GstStructure *s;
GstCaps *tmp = gst_caps_new_empty ();
s = gst_structure_new_id_empty (q_name);
if ((val = gst_structure_get_value (caps_s, "rate")))
gst_structure_set_value (s, "rate", val);
if ((val = gst_structure_get_value (caps_s, "channels")))
gst_structure_set_value (s, "channels", val);
if ((val = gst_structure_get_value (caps_s, "channels-mask")))
gst_structure_set_value (s, "channels-mask", val);
gst_caps_append_structure_full (tmp, s,
gst_caps_features_copy (features));
result = gst_caps_merge (result, tmp);
}
}
return result;
}
