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/*
* GStreamer
* Copyright (c) 2010, Texas Instruments Incorporated
*
* 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
* version 2.1 of the License.
*
* 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 "gstducatibufferpool.h"
/*
* GstDucatiBuffer
*/
static GstBufferClass *buffer_parent_class;
/* Get the original buffer, or whatever is the best output buffer.
* Consumes the input reference, produces the output reference
*/
GstBuffer *
gst_ducati_buffer_get (GstDucatiBuffer * self)
{
if (self->orig) {
// TODO copy to orig buffer.. if needed.
gst_buffer_unref (self->orig);
self->orig = NULL;
}
return GST_BUFFER (self);
}
static GstDucatiBuffer *
gst_ducati_buffer_new (GstDucatiBufferPool * pool)
{
GstDucatiBuffer *self = (GstDucatiBuffer *)
gst_mini_object_new (GST_TYPE_DUCATIBUFFER);
guint sz;
GST_LOG_OBJECT (pool->element, "creating buffer %p in pool %p", self, pool);
self->pool = (GstDucatiBufferPool *)
gst_mini_object_ref (GST_MINI_OBJECT (pool));
GST_BUFFER_DATA (self) =
gst_ducati_alloc_2d (pool->padded_width, pool->padded_height, &sz);
GST_BUFFER_SIZE (self) = sz;
gst_buffer_set_caps (GST_BUFFER (self), pool->caps);
return self;
}
static void
gst_ducati_buffer_finalize (GstDucatiBuffer * self)
{
GstDucatiBufferPool *pool = self->pool;
gboolean resuscitated = FALSE;
GST_LOG_OBJECT (pool->element, "finalizing buffer %p", self);
GST_DUCATI_BUFFERPOOL_LOCK (pool);
if (pool->running) {
resuscitated = TRUE;
GST_LOG_OBJECT (pool->element, "reviving buffer %p", self);
gst_buffer_ref (GST_BUFFER (self));
/* insert self into freelist */
self->next = pool->freelist;
pool->freelist = self;
} else {
GST_LOG_OBJECT (pool->element, "the pool is shutting down");
}
GST_DUCATI_BUFFERPOOL_UNLOCK (pool);
if (!resuscitated) {
GST_LOG_OBJECT (pool->element,
"buffer %p (data %p, len %u) not recovered, freeing",
self, GST_BUFFER_DATA (self), GST_BUFFER_SIZE (self));
MemMgr_Free ((void *) GST_BUFFER_DATA (self));
GST_BUFFER_DATA (self) = NULL;
gst_mini_object_unref (GST_MINI_OBJECT (pool));
GST_MINI_OBJECT_CLASS (buffer_parent_class)->
finalize (GST_MINI_OBJECT (self));
}
}
static void
gst_ducati_buffer_class_init (gpointer g_class, gpointer class_data)
{
GstMiniObjectClass *mini_object_class = GST_MINI_OBJECT_CLASS (g_class);
buffer_parent_class = g_type_class_peek_parent (g_class);
mini_object_class->finalize = (GstMiniObjectFinalizeFunction)
GST_DEBUG_FUNCPTR (gst_ducati_buffer_finalize);
}
GType
gst_ducati_buffer_get_type (void)
{
static GType type;
if (G_UNLIKELY (type == 0)) {
static const GTypeInfo info = {
.class_size = sizeof (GstBufferClass),
.class_init = gst_ducati_buffer_class_init,
.instance_size = sizeof (GstDucatiBuffer),
};
type = g_type_register_static (GST_TYPE_BUFFER,
"GstDucatiBuffer", &info, 0);
}
return type;
}
/*
* GstDucatiBufferPool
*/
static GstMiniObjectClass *bufferpool_parent_class = NULL;
/** create new bufferpool */
GstDucatiBufferPool *
gst_ducati_bufferpool_new (GstElement * element, GstCaps * caps)
{
GstDucatiBufferPool *self = (GstDucatiBufferPool *)
gst_mini_object_new (GST_TYPE_DUCATIBUFFERPOOL);
GstStructure *s = gst_caps_get_structure (caps, 0);
self->element = gst_object_ref (element);
gst_structure_get_int (s, "width", &self->padded_width);
gst_structure_get_int (s, "height", &self->padded_height);
self->caps = gst_caps_ref (caps);
self->freelist = NULL;
self->lock = g_mutex_new ();
self->running = TRUE;
return self;
}
/** destroy existing bufferpool */
void
gst_ducati_bufferpool_destroy (GstDucatiBufferPool * self)
{
g_return_if_fail (self);
GST_DUCATI_BUFFERPOOL_LOCK (self);
self->running = FALSE;
GST_DUCATI_BUFFERPOOL_UNLOCK (self);
GST_DEBUG_OBJECT (self->element, "destroy pool");
/* free all buffers on the freelist */
while (self->freelist) {
GstDucatiBuffer *buf = self->freelist;
self->freelist = buf->next;
gst_buffer_unref (GST_BUFFER (buf));
}
gst_mini_object_unref (GST_MINI_OBJECT (self));
}
/** get buffer from bufferpool, allocate new buffer if needed */
GstDucatiBuffer *
gst_ducati_bufferpool_get (GstDucatiBufferPool * self, GstBuffer * orig)
{
GstDucatiBuffer *buf = NULL;
g_return_val_if_fail (self, NULL);
GST_DUCATI_BUFFERPOOL_LOCK (self);
if (self->running) {
/* re-use a buffer off the freelist if any are available
*/
if (self->freelist) {
buf = self->freelist;
self->freelist = buf->next;
} else {
buf = gst_ducati_buffer_new (self);
}
buf->orig = orig;
}
GST_DUCATI_BUFFERPOOL_UNLOCK (self);
if (buf && orig) {
GST_BUFFER_TIMESTAMP (buf) = GST_BUFFER_TIMESTAMP (orig);
GST_BUFFER_DURATION (buf) = GST_BUFFER_DURATION (orig);
}
return buf;
}
static void
gst_ducati_bufferpool_finalize (GstDucatiBufferPool * self)
{
g_mutex_free (self->lock);
gst_caps_unref (self->caps);
gst_object_unref (self->element);
GST_MINI_OBJECT_CLASS (bufferpool_parent_class)->
finalize (GST_MINI_OBJECT (self));
}
static void
gst_ducati_bufferpool_class_init (gpointer g_class, gpointer class_data)
{
GstMiniObjectClass *mini_object_class = GST_MINI_OBJECT_CLASS (g_class);
bufferpool_parent_class = g_type_class_peek_parent (g_class);
mini_object_class->finalize = (GstMiniObjectFinalizeFunction)
GST_DEBUG_FUNCPTR (gst_ducati_bufferpool_finalize);
}
GType
gst_ducati_bufferpool_get_type (void)
{
static GType type;
if (G_UNLIKELY (type == 0)) {
static const GTypeInfo info = {
.class_size = sizeof (GstMiniObjectClass),
.class_init = gst_ducati_bufferpool_class_init,
.instance_size = sizeof (GstDucatiBufferPool),
};
type = g_type_register_static (GST_TYPE_MINI_OBJECT,
"GstDucatiBufferPool", &info, 0);
}
return type;
}
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