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120 lines
3.3 KiB
120 lines
3.3 KiB
/******************************************************************************
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*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*****************************************************************************
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* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
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*/
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/**
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*******************************************************************************
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* @file
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* impeg2_buf_mgr.h
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*
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* @brief
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* Function declarations used for buffer management
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*
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* @author
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* Srinivas T
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*
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* @remarks
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* None
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*
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*******************************************************************************
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*/
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#ifndef _IMPEG2_BUF_MGR_H_
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#define _IMPEG2_BUF_MGR_H_
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#define BUF_MGR_MAX_CNT 64
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#define BUF_MGR_DEC 1
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#define BUF_MGR_REF (1 << 1)
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#define BUF_MGR_DISP (1 << 2)
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typedef struct
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{
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/**
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* max_buf_cnt
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*/
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UWORD32 u4_max_buf_cnt;
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/**
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* active_buf_cnt
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*/
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UWORD32 u4_active_buf_cnt;
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/**
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* au4_status[BUF_MGR_MAX_CNT]
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*/
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UWORD32 au4_status[BUF_MGR_MAX_CNT];
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/* The last three bit of status are: */
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/* Bit 0 - DEC */
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/* Bit 1 - REF */
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/* Bit 2 - DISP */
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void *apv_ptr[BUF_MGR_MAX_CNT];
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}buf_mgr_t;
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// intializes the buffer API structure
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void impeg2_buf_mgr_init(
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buf_mgr_t *ps_buf_mgr);
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// resets the buffer API structure
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void impeg2_buf_mgr_reset(
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buf_mgr_t *ps_buf_mgr);
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// Add buffer to buffer manager. 0: success, -1: fail (u4_active_buf_cnt has reached u4_max_buf_cnt)
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WORD32 impeg2_buf_mgr_add(
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buf_mgr_t *ps_buf_mgr,
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void *pv_ptr,
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WORD32 buf_id);
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// this function will set the buffer status to DEC
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void* impeg2_buf_mgr_get_next_free(
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buf_mgr_t *ps_buf_mgr,
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WORD32 *pi4_id);
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// this function will check if there are any free buffers
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WORD32 impeg2_buf_mgr_check_free(
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buf_mgr_t *ps_buf_mgr);
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// mask will have who released it: DISP:REF:DEC
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WORD32 impeg2_buf_mgr_release(
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buf_mgr_t *ps_buf_mgr,
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WORD32 id,
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UWORD32 mask);
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// sets the status to one or all of DISP:REF:DEC
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WORD32 impeg2_buf_mgr_set_status(
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buf_mgr_t *ps_buf_mgr,
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WORD32 id,
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UWORD32 mask);
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// Gets status of the buffer
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UWORD32 impeg2_buf_mgr_get_status(
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buf_mgr_t *ps_buf_mgr,
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WORD32 id);
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// pass the ID - buffer will be returned
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void* impeg2_buf_mgr_get_buf(
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buf_mgr_t *ps_buf_mgr,
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WORD32 id);
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// will return number of active buffers
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UWORD32 impeg2_buf_mgr_get_num_active_buf(
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buf_mgr_t *ps_buf_mgr);
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#endif //_IMPEG2_BUF_MGR_H_
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