Initial version
Change-Id: I7efe9a589cd24edf86e8d086b40c27cbbf8b4017
diff --git a/common/ih264_disp_mgr.c b/common/ih264_disp_mgr.c
new file mode 100755
index 0000000..2bdb524
--- /dev/null
+++ b/common/ih264_disp_mgr.c
@@ -0,0 +1,186 @@
+/******************************************************************************
+ *
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ *****************************************************************************
+ * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
+*/
+/**
+*******************************************************************************
+* @file
+* ih264_disp_mgr.c
+*
+* @brief
+* Contains function definitions for display management
+*
+* @author
+* Srinivas T
+*
+* @par List of Functions:
+* - ih264_disp_mgr_init()
+* - ih264_disp_mgr_add()
+* - ih264_disp_mgr_get()
+*
+* @remarks
+* None
+*
+*******************************************************************************
+*/
+#include <stdlib.h>
+#include "ih264_typedefs.h"
+#include "ih264_macros.h"
+#include "ih264_disp_mgr.h"
+
+
+/**
+*******************************************************************************
+*
+* @brief
+* Initialization function for display buffer manager
+*
+* @par Description:
+* Initializes the display buffer management structure
+*
+* @param[in] ps_disp_mgr
+* Pointer to the display buffer management structure
+*
+* @returns none
+*
+* @remarks
+* None
+*
+*******************************************************************************
+*/
+void ih264_disp_mgr_init(disp_mgr_t *ps_disp_mgr)
+{
+ WORD32 id;
+
+ ps_disp_mgr->u4_last_abs_poc = DEFAULT_POC;
+
+ for(id = 0; id < DISP_MGR_MAX_CNT; id++)
+ {
+ ps_disp_mgr->ai4_abs_poc[id] = DEFAULT_POC;
+ ps_disp_mgr->apv_ptr[id] = NULL;
+ }
+}
+
+
+/**
+*******************************************************************************
+*
+* @brief
+* Adds a buffer to the display manager
+*
+* @par Description:
+* Adds a buffer to the display buffer manager
+*
+* @param[in] ps_disp_mgr
+* Pointer to the display buffer management structure
+*
+* @param[in] buf_id
+* ID of the display buffer
+*
+* @param[in] abs_poc
+* Absolute POC of the display buffer
+*
+* @param[in] pv_ptr
+* Pointer to the display buffer
+*
+* @returns 0 if success, -1 otherwise
+*
+* @remarks
+* None
+*
+*******************************************************************************
+*/
+WORD32 ih264_disp_mgr_add(disp_mgr_t *ps_disp_mgr,
+ WORD32 buf_id,
+ WORD32 abs_poc,
+ void *pv_ptr)
+{
+ if(buf_id >= DISP_MGR_MAX_CNT)
+ {
+ return (-1);
+ }
+
+ if(ps_disp_mgr->apv_ptr[buf_id] != NULL)
+ {
+ return (-1);
+ }
+
+ ps_disp_mgr->apv_ptr[buf_id] = pv_ptr;
+ ps_disp_mgr->ai4_abs_poc[buf_id] = abs_poc;
+ return 0;
+}
+
+
+/**
+*******************************************************************************
+*
+* @brief
+* Gets the next buffer
+*
+* @par Description:
+* Gets the next display buffer
+*
+* @param[in] ps_disp_mgr
+* Pointer to the display buffer structure
+*
+* @param[out] pi4_buf_id
+* Pointer to hold buffer id of the display buffer being returned
+*
+* @returns Pointer to the next display buffer
+*
+* @remarks
+* None
+*
+*******************************************************************************
+*/
+void* ih264_disp_mgr_get(disp_mgr_t *ps_disp_mgr, WORD32 *pi4_buf_id)
+{
+ WORD32 id;
+ void *pv_ret_ptr;
+ WORD32 i4_min_poc;
+ WORD32 min_poc_id;
+
+
+ pv_ret_ptr = NULL;
+ i4_min_poc = 0x7FFFFFFF;
+ min_poc_id = -1;
+
+ /* Find minimum POC */
+ for(id = 0; id < DISP_MGR_MAX_CNT; id++)
+ {
+ if((DEFAULT_POC != ps_disp_mgr->ai4_abs_poc[id]) &&
+ (ps_disp_mgr->ai4_abs_poc[id] <= i4_min_poc))
+ {
+ i4_min_poc = ps_disp_mgr->ai4_abs_poc[id];
+ min_poc_id = id;
+ }
+ }
+ *pi4_buf_id = min_poc_id;
+ /* If all pocs are still default_poc then return NULL */
+ if(-1 == min_poc_id)
+ {
+ return NULL;
+ }
+
+ pv_ret_ptr = ps_disp_mgr->apv_ptr[min_poc_id];
+
+ /* Set abs poc to default and apv_ptr to null so that the buffer is not returned again */
+ ps_disp_mgr->apv_ptr[min_poc_id] = NULL;
+ ps_disp_mgr->ai4_abs_poc[min_poc_id] = DEFAULT_POC;
+ return pv_ret_ptr;
+}