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vkinstance: add signal for overriding device creation

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This commit is contained in:
Matthew Waters 2016-02-08 14:25:49 +11:00
parent 300f4e03b2
commit 0bcb3cdd29
3 changed files with 53 additions and 5 deletions
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51
ext/vulkan/vkinstance.c
View file

@ -45,6 +45,15 @@ GST_DEBUG_CATEGORY (GST_CAT_DEFAULT);
GST_DEBUG_CATEGORY (GST_VULKAN_DEBUG_CAT);
GST_DEBUG_CATEGORY (GST_CAT_CONTEXT);
enum
{
SIGNAL_0,
SIGNAL_CREATE_DEVICE,
LAST_SIGNAL
};
static guint gst_vulkan_instance_signals[LAST_SIGNAL] = { 0 };
#define gst_vulkan_instance_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstVulkanInstance, gst_vulkan_instance,
GST_TYPE_OBJECT, GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT,
@ -74,15 +83,29 @@ gst_vulkan_instance_init (GstVulkanInstance * instance)
}
static void
gst_vulkan_instance_class_init (GstVulkanInstanceClass * instance_class)
gst_vulkan_instance_class_init (GstVulkanInstanceClass * klass)
{
gst_vulkan_memory_init_once ();
gst_vulkan_image_memory_init_once ();
gst_vulkan_buffer_memory_init_once ();
g_type_class_add_private (instance_class, sizeof (GstVulkanInstancePrivate));
g_type_class_add_private (klass, sizeof (GstVulkanInstancePrivate));
G_OBJECT_CLASS (instance_class)->finalize = gst_vulkan_instance_finalize;
/**
* GstVulkanInstance::create-device:
* @object: the #GstVulkanDisplay
*
* Overrides the #GstVulkanDevice creation mechanism.
* It can be called from any thread.
*
* Returns: the newly created #GstVulkanDevice.
*/
gst_vulkan_instance_signals[SIGNAL_CREATE_DEVICE] =
g_signal_new ("create-device", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, 0, NULL, NULL, g_cclosure_marshal_generic,
GST_TYPE_VULKAN_DEVICE, 0);
G_OBJECT_CLASS (klass)->finalize = gst_vulkan_instance_finalize;
}
static void
@ -383,6 +406,28 @@ gst_vulkan_instance_get_proc_address (GstVulkanInstance * instance,
return vkGetInstanceProcAddr (instance->instance, name);
}
GstVulkanDevice *
gst_vulkan_instance_create_device (GstVulkanInstance * instance,
GError ** error)
{
GstVulkanDevice *device;
g_return_val_if_fail (GST_IS_VULKAN_INSTANCE (instance), NULL);
g_signal_emit (instance, gst_vulkan_instance_signals[SIGNAL_CREATE_DEVICE], 0,
&device);
if (!device)
device = gst_vulkan_device_new (instance);
if (!gst_vulkan_device_open (device, error)) {
gst_object_unref (device);
device = NULL;
}
return device;
}
/**
* gst_context_set_vulkan_instance:
* @context: a #GstContext

3
ext/vulkan/vkinstance.h
View file

@ -63,6 +63,9 @@ gboolean gst_vulkan_instance_open (GstVulkanInstance *
gpointer gst_vulkan_instance_get_proc_address (GstVulkanInstance * instance,
const gchar * name);
GstVulkanDevice * gst_vulkan_instance_create_device (GstVulkanInstance * instance,
GError ** error);
void gst_context_set_vulkan_instance (GstContext * context,
GstVulkanInstance * instance);
gboolean gst_context_get_vulkan_instance (GstContext * context,

4
ext/vulkan/vksink.c
View file

@ -258,8 +258,8 @@ gst_vulkan_sink_change_state (GstElement * element, GstStateChange transition)
return GST_STATE_CHANGE_FAILURE;
}
vk_sink->device = gst_vulkan_device_new (vk_sink->instance);
if (!gst_vulkan_device_open (vk_sink->device, &error)) {
if (!(vk_sink->device =
gst_vulkan_instance_create_device (vk_sink->instance, &error))) {
GST_ELEMENT_ERROR (vk_sink, RESOURCE, NOT_FOUND,
("Failed to create vulkan device"), ("%s", error->message));
return GST_STATE_CHANGE_FAILURE;