gstreamer/subprojects/gstreamer-vaapi/gst-libs/gst/vaapi/gstvaapicodedbufferproxy.c

256 lines
7.7 KiB
C

/*
* gstvaapicodedbufferproxy.c - VA coded buffer proxy
*
* Copyright (C) 2013 Intel Corporation
* Author: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#include "sysdeps.h"
#include "gstvaapicodedbufferproxy.h"
#include "gstvaapicodedbufferproxy_priv.h"
#include "gstvaapivideopool_priv.h"
#define DEBUG 1
#include "gstvaapidebug.h"
static void
coded_buffer_proxy_set_user_data (GstVaapiCodedBufferProxy * proxy,
gpointer user_data, GDestroyNotify destroy_func)
{
if (proxy->user_data_destroy)
proxy->user_data_destroy (proxy->user_data);
proxy->user_data = user_data;
proxy->user_data_destroy = destroy_func;
}
static void
coded_buffer_proxy_finalize (GstVaapiCodedBufferProxy * proxy)
{
if (proxy->buffer) {
if (proxy->pool)
gst_vaapi_video_pool_put_object (proxy->pool, proxy->buffer);
gst_vaapi_coded_buffer_unref (proxy->buffer);
proxy->buffer = NULL;
}
gst_vaapi_video_pool_replace (&proxy->pool, NULL);
coded_buffer_proxy_set_user_data (proxy, NULL, NULL);
/* Notify the user function that the object is now destroyed */
if (proxy->destroy_func)
proxy->destroy_func (proxy->destroy_data);
}
static inline const GstVaapiMiniObjectClass *
gst_vaapi_coded_buffer_proxy_class (void)
{
static const GstVaapiMiniObjectClass GstVaapiCodedBufferProxyClass = {
sizeof (GstVaapiCodedBufferProxy),
(GDestroyNotify) coded_buffer_proxy_finalize
};
return &GstVaapiCodedBufferProxyClass;
}
/**
* gst_vaapi_coded_buffer_proxy_new_from_pool:
* @pool: a #GstVaapiCodedBufferPool
*
* Allocates a new coded buffer from the supplied @pool and creates
* the wrapped coded buffer proxy object from it. When the last
* reference to the proxy object is released, then the underlying VA
* coded buffer is pushed back to its parent pool.
*
* Returns: The same newly allocated @proxy object, or %NULL on error
*/
GstVaapiCodedBufferProxy *
gst_vaapi_coded_buffer_proxy_new_from_pool (GstVaapiCodedBufferPool * pool)
{
GstVaapiCodedBufferProxy *proxy;
g_return_val_if_fail (pool != NULL, NULL);
g_return_val_if_fail (GST_VAAPI_VIDEO_POOL (pool)->object_type ==
GST_VAAPI_VIDEO_POOL_OBJECT_TYPE_CODED_BUFFER, NULL);
proxy = (GstVaapiCodedBufferProxy *)
gst_vaapi_mini_object_new (gst_vaapi_coded_buffer_proxy_class ());
if (!proxy)
return NULL;
proxy->destroy_func = NULL;
proxy->user_data_destroy = NULL;
proxy->pool = gst_vaapi_video_pool_ref (GST_VAAPI_VIDEO_POOL (pool));
proxy->buffer = gst_vaapi_video_pool_get_object (proxy->pool);
if (!proxy->buffer)
goto error;
gst_mini_object_ref (GST_MINI_OBJECT_CAST (proxy->buffer));
return proxy;
/* ERRORS */
error:
{
gst_vaapi_coded_buffer_proxy_unref (proxy);
return NULL;
}
}
/**
* gst_vaapi_coded_buffer_proxy_ref:
* @proxy: a #GstVaapiCodedBufferProxy
*
* Atomically increases the reference count of the given @proxy by one.
*
* Returns: The same @proxy argument
*/
GstVaapiCodedBufferProxy *
gst_vaapi_coded_buffer_proxy_ref (GstVaapiCodedBufferProxy * proxy)
{
g_return_val_if_fail (proxy != NULL, NULL);
return GST_VAAPI_CODED_BUFFER_PROXY (gst_vaapi_mini_object_ref
(GST_VAAPI_MINI_OBJECT (proxy)));
}
/**
* gst_vaapi_coded_buffer_proxy_unref:
* @proxy: a #GstVaapiCodedBufferProxy
*
* Atomically decreases the reference count of the @proxy by one. If
* the reference count reaches zero, the object will be free'd.
*/
void
gst_vaapi_coded_buffer_proxy_unref (GstVaapiCodedBufferProxy * proxy)
{
g_return_if_fail (proxy != NULL);
gst_vaapi_mini_object_unref (GST_VAAPI_MINI_OBJECT (proxy));
}
/**
* gst_vaapi_coded_buffer_proxy_replace:
* @old_proxy_ptr: a pointer to a #GstVaapiCodedBufferProxy
* @new_proxy: a #GstVaapiCodedBufferProxy
*
* Atomically replaces the proxy object held in @old_proxy_ptr with
* @new_proxy. This means that @old_proxy_ptr shall reference a valid
* object. However, @new_proxy can be NULL.
*/
void
gst_vaapi_coded_buffer_proxy_replace (GstVaapiCodedBufferProxy ** old_proxy_ptr,
GstVaapiCodedBufferProxy * new_proxy)
{
g_return_if_fail (old_proxy_ptr != NULL);
gst_vaapi_mini_object_replace ((GstVaapiMiniObject **) old_proxy_ptr,
GST_VAAPI_MINI_OBJECT (new_proxy));
}
/**
* gst_vaapi_coded_buffer_proxy_get_buffer:
* @proxy: a #GstVaapiCodedBufferProxy
*
* Returns the #GstVaapiCodedBuffer stored in the @proxy.
*
* Return value: the #GstVaapiCodedBuffer, or %NULL if an error occurred
*/
GstVaapiCodedBuffer *
gst_vaapi_coded_buffer_proxy_get_buffer (GstVaapiCodedBufferProxy * proxy)
{
g_return_val_if_fail (proxy != NULL, NULL);
return GST_VAAPI_CODED_BUFFER_PROXY_BUFFER (proxy);
}
/**
* gst_vaapi_coded_buffer_proxy_get_buffer_size:
* @proxy: a #GstVaapiCodedBufferProxy
*
* Returns the size of the underlying #GstVaapiCodedBuffer object
* stored in the @proxy.
*
* Return value: the underlying #GstVaapiCodedBuffer size, or -1 if an
* error occurred
*/
gssize
gst_vaapi_coded_buffer_proxy_get_buffer_size (GstVaapiCodedBufferProxy * proxy)
{
g_return_val_if_fail (proxy != NULL, -1);
return GST_VAAPI_CODED_BUFFER_PROXY_BUFFER_SIZE (proxy);
}
/**
* gst_vaapi_coded_buffer_proxy_set_destroy_notify:
* @proxy: a @GstVaapiCodedBufferProxy
* @destroy_func: a #GDestroyNotify function
* @user_data: some extra data to pass to the @destroy_func function
*
* Sets @destroy_func as the function to call when the coded buffer
* @proxy was released. At this point, the proxy object is considered
* released, i.e. the underlying data storage is no longer valid and
* the callback function shall not expect anything from that.
*/
void
gst_vaapi_coded_buffer_proxy_set_destroy_notify (GstVaapiCodedBufferProxy *
proxy, GDestroyNotify destroy_func, gpointer user_data)
{
g_return_if_fail (proxy != NULL);
proxy->destroy_func = destroy_func;
proxy->destroy_data = user_data;
}
/**
* gst_vaapi_coded_buffer_proxy_get_user_data:
* @proxy: a #GstVaapiCodedBufferProxy
*
* Gets private data previously set on the VA coded buffer proxy
* object through the gst_vaapi_coded_buffer_proxy_set_user_data()
* function.
*
* Return value: the previously set user-data
*/
gpointer
gst_vaapi_coded_buffer_proxy_get_user_data (GstVaapiCodedBufferProxy * proxy)
{
g_return_val_if_fail (proxy != NULL, NULL);
return proxy->user_data;
}
/**
* gst_vaapi_coded_buffer_proxy_set_user_data:
* @proxy: a #GstVaapiCodedBufferProxy
* @user_data: user-defined data
* @destroy_func: a #GDestroyNotify
*
* Sets @user_data on the VA coded buffer proxy object and the
* #GDestroyNotify function that will be called when the coded buffer
* proxy object is released.
*
* If a @user_data was previously set, then the previously set
* @destroy_func function, if any, will be called before the
* @user_data is replaced.
*/
void
gst_vaapi_coded_buffer_proxy_set_user_data (GstVaapiCodedBufferProxy * proxy,
gpointer user_data, GDestroyNotify destroy_func)
{
g_return_if_fail (proxy != NULL);
coded_buffer_proxy_set_user_data (proxy, user_data, destroy_func);
}