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/******************************************************************************
*
* 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_buf_mgr.h
*
* @brief
* Function declarations used for buffer management
*
* @remarks
* None
*
*******************************************************************************
*/
#ifndef _IH264_BUF_MGR_H_
#define _IH264_BUF_MGR_H_
#define BUF_MGR_MAX_CNT 64
/** Flag for current encoding decoder */
#define BUF_MGR_CODEC (1 << 1)
/** Flag for reference status */
#define BUF_MGR_REF (1 << 2)
/** Flag for I/O - Display/output in case of decoder, capture/input in case of encoder */
#define BUF_MGR_IO (1 << 3)
typedef struct
{
/**
* Mutex used to keep the functions thread-safe
*/
void *pv_mutex;
/**
* max_buf_cnt
*/
WORD32 i4_max_buf_cnt;
/**
* active_buf_cnt
*/
WORD32 i4_active_buf_cnt;
/**
* au4_status[BUF_MGR_MAX_CNT]
*/
UWORD32 au4_status[BUF_MGR_MAX_CNT];
/* The last three bit of status are: */
/* Bit 0 - IN USE */
/* Bit 1 - CODEC */
/* Bit 2 - REF */
/* Bit 3 - DISP/IO/RECON */
void *apv_ptr[BUF_MGR_MAX_CNT];
}buf_mgr_t;
// Returns size of the buffer manager context
WORD32 ih264_buf_mgr_size(void);
//Free buffer manager
IH264_ERROR_T ih264_buf_mgr_free(buf_mgr_t *ps_buf_mgr);
// Initializes the buffer API structure
void *ih264_buf_mgr_init(void *pv_buf);
// Add buffer to buffer manager. 0: success, -1: fail (u4_active_buf_cnt has reached u4_max_buf_cnt)
IH264_ERROR_T ih264_buf_mgr_add(buf_mgr_t *ps_buf_mgr,
void *pv_ptr,
WORD32 buf_id);
// this function will set the buffer status to DEC
void* ih264_buf_mgr_get_next_free(buf_mgr_t *ps_buf_mgr, WORD32 *pi4_id);
// this function will check if there are any free buffers
IH264_ERROR_T ih264_buf_mgr_check_free(buf_mgr_t *ps_buf_mgr);
// mask will have who released it: DISP:REF:DEC
IH264_ERROR_T ih264_buf_mgr_release(buf_mgr_t *ps_buf_mgr,
WORD32 id,
UWORD32 mask);
// sets the status to one or all of DISP:REF:DEC
IH264_ERROR_T ih264_buf_mgr_set_status(buf_mgr_t *ps_buf_mgr,
WORD32 id,
UWORD32 mask);
// Gets status of the buffer
WORD32 ih264_buf_mgr_get_status(buf_mgr_t *ps_buf_mgr, WORD32 id);
// pass the ID - buffer will be returned
void* ih264_buf_mgr_get_buf(buf_mgr_t *ps_buf_mgr, WORD32 id);
//Pass buffer to get ID
WORD32 ih264_buf_mgr_get_bufid(buf_mgr_t *ps_buf_mgr, void *pv_buf);
// will return number of active buffers
UWORD32 ih264_buf_mgr_get_num_active_buf(buf_mgr_t *ps_buf_mgr);
#endif /* _IH264_BUF_MGR_H_ */
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