video_dec_buffer_manager.h

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/*****************************************************************************
*  Copyright Statement:
*  --------------------
*  This software is protected by Copyright and the information contained
*  herein is confidential. The software may not be copied and the information
*  contained herein may not be used or disclosed except with the written
*  permission of MediaTek Inc. (C) 2005
*
*  BY OPENING THIS FILE, BUYER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
*  THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
*  RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO BUYER ON
*  AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
*  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
*  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
*  NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
*  SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
*  SUPPLIED WITH THE MEDIATEK SOFTWARE, AND BUYER AGREES TO LOOK ONLY TO SUCH
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*****************************************************************************/

/*******************************************************************************
 *
 * Filename:
 * ---------
 *   video_dec_buffer_manager.h
 *
 * Project:
 * --------
 *   MAUI
 *
 * Description:
 * ------------
 *   Video buffer management
 *
 * Author:
 * -------
 * -------
 *
 *============================================================================
 *             HISTORY
 * Below this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
 *------------------------------------------------------------------------------
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 *------------------------------------------------------------------------------
 * Upper this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
 *============================================================================
 ****************************************************************************/
#ifndef VIDEO_DEC_BUFFER_MANAGER_H
#define VIDEO_DEC_BUFFER_MANAGER_H

//  Maximum decode frame each buffer
#define DEC_MAX_FRMAE_IN_BUFFER        50
#ifdef __VIDEO_STREAM_SUPPORT__
//  Maximum buffer count 
#define VIDEO_DEC_MAX_BUFFER_COUNT           6
#else
//  Maximum buffer count 
#define VIDEO_DEC_MAX_BUFFER_COUNT           3
#endif

/*callback function type definition */
typedef void (*video_dec_buffer_callback)(kal_uint8 event_id);

/* buffer scenario type */
typedef enum
{
    VIDEO_DEC_BUFFER_SCENARIO_FILE,
    VIDEO_DEC_BUFFER_SCENARIO_EDITOR,
    VIDEO_DEC_BUFFER_SCENARIO_PROGRESSIVE,
    VIDEO_DEC_BUFFER_SCENARIO_STREAM
}VIDEO_DEC_BUFFER_SCENARIO;


/* file adap erad parameter */
typedef struct
{
    kal_uint32 start_frame_no;
    kal_uint32 total_frame_no;
    kal_uint32 result_frame_no;
    kal_uint32 max_size;
    kal_uint32 result_size;
    kal_uint32 *p_frame_buffer_addr;
    kal_uint32 *p_frame_length;
    kal_uint32 temp_file_offset[DEC_MAX_FRMAE_IN_BUFFER + 1]; /* temp storage to enhance speed */
} VIDEO_DEC_FILE_READ_STRUCT;

/* each buffer structure */
typedef struct
{
    // Decode physical buffer
    kal_uint8 *buffer;
    // Decode physical buffer length
    kal_uint32 buffer_length;
    // Frame address in double buffer
    kal_uint32 frame_buffer_addr[DEC_MAX_FRMAE_IN_BUFFER];
    // Frame length in double buffer
    kal_uint32 frame_length[DEC_MAX_FRMAE_IN_BUFFER];
    // Frame duration for each frame in buffer
    kal_uint64 prev_frame_duration[DEC_MAX_FRMAE_IN_BUFFER];
    // Total frames number in this buffer
    kal_uint8 total_frames_in_buffers;
    // Total frames number read index
    kal_uint32 frame_read_index;
    // Total frames number write index
    kal_uint32 frame_write_index;
    // The start frame id in this buffer
    kal_uint32 frame_start_id;
    // The previous time in this buffer
    kal_uint64 prev_duration;
    // This buffer is written done by task??
    kal_bool is_write_done;
    // used size
    kal_uint32 size_usage;
    // file adap struct
    VIDEO_DEC_FILE_READ_STRUCT file_read_info;
} VIDEO_DEC_BUFFER_STRUCT;

/* initialize function config parameter */
typedef struct
{
    VIDEO_DEC_BUFFER_SCENARIO scenario;
    video_dec_buffer_callback *callback;
    kal_uint8 event_id;
} VIDEO_DEC_BUFFER_CB_STRUCT;

/* decode buffer management structure */
typedef struct
{
    VIDEO_DEC_BUFFER_CB_STRUCT cb_info;
    VIDEO_DEC_BUFFER_STRUCT DEC_BUFFER[VIDEO_DEC_MAX_BUFFER_COUNT];
    kal_uint16 buffer_count;
    kal_uint8 *buffer_start_addr;
    kal_uint16 write_buffer_id;
    kal_uint16 read_buffer_id;
    kal_uint32 start_frame_no;
    kal_uint32 end_frame_no;
    kal_bool send_ilm;
    kal_bool b_data_empty;
    kal_bool cancel_put_buffer;
} VIDEO_DEC_BUFFER_MGR_STRUCT;


/* Config and init buffer management.
*   It should be executed in task level. It may be configured according to differnet application
* @param cb_info buffer senario and callback function information
* @return None
*/
extern void video_dec_config_buffer(VIDEO_DEC_BUFFER_CB_STRUCT cb_info);


/* Clear all the buffers. Only clear the control parameter is enough.
*   It should be executed in task level.
* @param start_frame_no. the start frame that shuld be prepared
* @param end_frame_no. the end frame that shuld be prepared 
* @return None
*/
extern void video_dec_clr_buffer(kal_uint32 start_frame_no, kal_uint32 end_frame_no);


/* Cancel the current put buffer action. If driver decides to stop, but task is still get data from file system to buffer.
*   It can stop put buffer as quickly as possible
* @param None
* @return None
*/
extern void video_dec_cancel_put_buffer(void);


/* get next frame address, and this function is called in ISR.
 * @param  addr frame memory addrsss
 * @param  length frame size(bytes)
 * @param  prev_frame_duration the duration of the previous frame(unit: auido interrupt count)
 * @return Media status, which is based MEDIA_STATUS_CODE structure.
 */
extern MEDIA_STATUS_CODE video_dec_get_next_frame(kal_uint8 **addr, kal_uint32 *length, kal_uint32 *prev_frame_duration);


/* Put bitstream data from file to double buffer, and this function should be  called in TASK.
 * @param None
 * @return Media status, which is based MEDIA_STATUS_CODE structure.
 */
extern MEDIA_STATUS_CODE video_dec_put_frame_to_buffer(void);

#endif /*VIDEO_DEC_GLB_H*/