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authorAustin Yuan <shengquan.yuan@intel.com>2009-06-13 07:18:20 +0800
committerAustin Yuan <shengquan.yuan@intel.com>2009-06-13 07:18:20 +0800
commitbd592e383a2b863863c20cbb51ccfc8f6a068e84 (patch)
tree533a41e869959d91291064db0ae789c9b90864d7 /libva/dummy_drv_video/object_heap.c
parent2e2e3bae80ab44088516aff19407c8f68fc24f18 (diff)
downloadlibva-bd592e383a2b863863c20cbb51ccfc8f6a068e84.tar.gz
Upload latest libVA library
1. Upgrade VAAPI to version 0.30 which has encode support 2. Incorporate Gwenole Beauchesne's patches 102, 103, 104. 105, 106, 107, 109 and part of 202 (see http://www.splitted-desktop.com/~gbeauchesne/libva/patches/) 3. DRI2 support Signed-off-by: Austin Yuan <shengquan.yuan@intel.com>
Diffstat (limited to 'libva/dummy_drv_video/object_heap.c')
-rw-r--r--libva/dummy_drv_video/object_heap.c193
1 files changed, 193 insertions, 0 deletions
diff --git a/libva/dummy_drv_video/object_heap.c b/libva/dummy_drv_video/object_heap.c
new file mode 100644
index 0000000..e867139
--- /dev/null
+++ b/libva/dummy_drv_video/object_heap.c
@@ -0,0 +1,193 @@
+/*
+ * Copyright (c) 2007 Intel Corporation. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "object_heap.h"
+
+#include "assert.h"
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#define ASSERT assert
+
+#define LAST_FREE -1
+#define ALLOCATED -2
+
+/*
+ * Expands the heap
+ * Return 0 on success, -1 on error
+ */
+static int object_heap_expand( object_heap_p heap )
+{
+ int i;
+ void *new_heap_index;
+ int next_free;
+ int new_heap_size = heap->heap_size + heap->heap_increment;
+
+ new_heap_index = (void *) realloc( heap->heap_index, new_heap_size * heap->object_size );
+ if ( NULL == new_heap_index )
+ {
+ return -1; /* Out of memory */
+ }
+ heap->heap_index = new_heap_index;
+ next_free = heap->next_free;
+ for(i = new_heap_size; i-- > heap->heap_size; )
+ {
+ object_base_p obj = (object_base_p) (heap->heap_index + i * heap->object_size);
+ obj->id = i + heap->id_offset;
+ obj->next_free = next_free;
+ next_free = i;
+ }
+ heap->next_free = next_free;
+ heap->heap_size = new_heap_size;
+ return 0; /* Success */
+}
+
+/*
+ * Return 0 on success, -1 on error
+ */
+int object_heap_init( object_heap_p heap, int object_size, int id_offset)
+{
+ heap->object_size = object_size;
+ heap->id_offset = id_offset & OBJECT_HEAP_OFFSET_MASK;
+ heap->heap_size = 0;
+ heap->heap_increment = 16;
+ heap->heap_index = NULL;
+ heap->next_free = LAST_FREE;
+ return object_heap_expand(heap);
+}
+
+/*
+ * Allocates an object
+ * Returns the object ID on success, returns -1 on error
+ */
+int object_heap_allocate( object_heap_p heap )
+{
+ object_base_p obj;
+ if ( LAST_FREE == heap->next_free )
+ {
+ if( -1 == object_heap_expand( heap ) )
+ {
+ return -1; /* Out of memory */
+ }
+ }
+ ASSERT( heap->next_free >= 0 );
+
+ obj = (object_base_p) (heap->heap_index + heap->next_free * heap->object_size);
+ heap->next_free = obj->next_free;
+ obj->next_free = ALLOCATED;
+ return obj->id;
+}
+
+/*
+ * Lookup an object by object ID
+ * Returns a pointer to the object on success, returns NULL on error
+ */
+object_base_p object_heap_lookup( object_heap_p heap, int id )
+{
+ object_base_p obj;
+ if ( (id < heap->id_offset) || (id > (heap->heap_size+heap->id_offset)) )
+ {
+ return NULL;
+ }
+ id &= OBJECT_HEAP_ID_MASK;
+ obj = (object_base_p) (heap->heap_index + id * heap->object_size);
+
+ /* Check if the object has in fact been allocated */
+ if ( obj->next_free != ALLOCATED )
+ {
+ return NULL;
+ }
+ return obj;
+}
+
+/*
+ * Iterate over all objects in the heap.
+ * Returns a pointer to the first object on the heap, returns NULL if heap is empty.
+ */
+object_base_p object_heap_first( object_heap_p heap, object_heap_iterator *iter )
+{
+ *iter = -1;
+ return object_heap_next( heap, iter );
+}
+
+/*
+ * Iterate over all objects in the heap.
+ * Returns a pointer to the next object on the heap, returns NULL if heap is empty.
+ */
+object_base_p object_heap_next( object_heap_p heap, object_heap_iterator *iter )
+{
+ object_base_p obj;
+ int i = *iter + 1;
+ while ( i < heap->heap_size)
+ {
+ obj = (object_base_p) (heap->heap_index + i * heap->object_size);
+ if (obj->next_free == ALLOCATED)
+ {
+ *iter = i;
+ return obj;
+ }
+ i++;
+ }
+ *iter = i;
+ return NULL;
+}
+
+
+
+/*
+ * Frees an object
+ */
+void object_heap_free( object_heap_p heap, object_base_p obj )
+{
+ /* Don't complain about NULL pointers */
+ if (NULL != obj)
+ {
+ /* Check if the object has in fact been allocated */
+ ASSERT( obj->next_free == ALLOCATED );
+
+ obj->next_free = heap->next_free;
+ heap->next_free = obj->id & OBJECT_HEAP_ID_MASK;
+ }
+}
+
+/*
+ * Destroys a heap, the heap must be empty.
+ */
+void object_heap_destroy( object_heap_p heap )
+{
+ object_base_p obj;
+ int i;
+ /* Check if heap is empty */
+ for (i = 0; i < heap->heap_size; i++)
+ {
+ /* Check if object is not still allocated */
+ obj = (object_base_p) (heap->heap_index + i * heap->object_size);
+ ASSERT( obj->next_free != ALLOCATED );
+ }
+ free(heap->heap_index);
+ heap->heap_size = 0;
+ heap->heap_index = NULL;
+ heap->next_free = LAST_FREE;
+}