/******************************************************************************
*
* 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
*/
#include "log/log.h"
#include <cutils/log.h>
#include "ih264_typedefs.h"
#include "ih264_macros.h"
#include "ih264_platform_macros.h"
#include "iv.h"
#include "ih264d_dpb_manager.h"
#include "ih264d_bitstrm.h"
#include "ih264d_parse_cavlc.h"
#include "ih264d_defs.h"
#include "ih264d_structs.h"
#include "ih264d_process_bslice.h"
#include "ih264d_debug.h"
#include "ih264d_tables.h"
#include "ih264d_error_handler.h"
#include "string.h"
#include "ih264d_defs.h"
#include "ih264_error.h"
#include "ih264_buf_mgr.h"
#include "assert.h"
/*!
***************************************************************************
* \file ih264d_dpb_mgr.c
*
* \brief
* Functions for managing the decoded picture buffer
*
* Detailed_description
*
* \date
* 19-12-2002
*
* \author Sriram Sethuraman
***************************************************************************
*/
/*!
**************************************************************************
* \if Function name : ih264d_init_ref_bufs \endif
*
* \brief
* Called at the start for initialization.
*
* \return
* none
**************************************************************************
*/
void ih264d_init_ref_bufs(dpb_manager_t *ps_dpb_mgr)
{
UWORD32 i;
struct dpb_info_t *ps_dpb_info = ps_dpb_mgr->as_dpb_info;
for(i = 0; i < MAX_REF_BUFS; i++)
{
ps_dpb_info[i].u1_used_as_ref = UNUSED_FOR_REF;
ps_dpb_info[i].u1_lt_idx = MAX_REF_BUFS + 1;
ps_dpb_info[i].ps_prev_short = NULL;
ps_dpb_info[i].ps_prev_long = NULL;
ps_dpb_info[i].ps_pic_buf = NULL;
ps_dpb_info[i].s_top_field.u1_reference_info = UNUSED_FOR_REF;
ps_dpb_info[i].s_bot_field.u1_reference_info = UNUSED_FOR_REF;
ps_dpb_info[i].s_top_field.u1_long_term_frame_idx = MAX_REF_BUFS + 1;
ps_dpb_info[i].s_bot_field.u1_long_term_frame_idx = MAX_REF_BUFS + 1;
}
ps_dpb_mgr->u1_num_st_ref_bufs = ps_dpb_mgr->u1_num_lt_ref_bufs = 0;
ps_dpb_mgr->ps_dpb_st_head = NULL;
ps_dpb_mgr->ps_dpb_ht_head = NULL;
ps_dpb_mgr->i1_gaps_deleted = 0;
ps_dpb_mgr->i1_poc_buf_id_entries = 0;
ps_dpb_mgr->u1_num_gaps = 0;
for(i = 0; i < MAX_FRAMES; i++)
{
ps_dpb_mgr->ai4_gaps_start_frm_num[i] = INVALID_FRAME_NUM;
ps_dpb_mgr->ai4_gaps_end_frm_num[i] = 0;
ps_dpb_mgr->ai1_gaps_per_seq[i] = 0;
ps_dpb_mgr->ai4_poc_buf_id_map[i][0] = -1;
ps_dpb_mgr->ai4_poc_buf_id_map[i][1] = 0x7fffffff;
ps_dpb_mgr->ai4_poc_buf_id_map[i][2] = 0;
}
}
void ih264d_free_ref_pic_mv_bufs(void* pv_dec, UWORD8 pic_buf_id)
{
dec_struct_t *ps_dec = (dec_struct_t *)pv_dec;
if((pic_buf_id == ps_dec->u1_pic_buf_id) &&
ps_dec->ps_cur_slice->u1_field_pic_flag &&
(ps_dec->u1_top_bottom_decoded == 0))
{
return;
}
ih264_buf_mgr_release((buf_mgr_t *)ps_dec->pv_pic_buf_mgr,
pic_buf_id,
BUF_MGR_REF);
ih264_buf_mgr_release((buf_mgr_t *)ps_dec->pv_mv_buf_mgr,
ps_dec->au1_pic_buf_id_mv_buf_id_map[pic_buf_id],
BUF_MGR_REF);
}
/*!
**************************************************************************
* \if Function name : ih264d_delete_lt_node \endif
*
* \brief
* Delete a buffer with a long term index from the LT linked list
*
* \return
* none
**************************************************************************
*/
WORD32 ih264d_delete_lt_node(dpb_manager_t *ps_dpb_mgr,
UWORD32 u4_lt_idx,
UWORD8 u1_fld_pic_flag,
struct dpb_info_t *ps_lt_node_to_insert,
WORD32 *pi4_status)
{
*pi4_status = 0;
if(ps_dpb_mgr->u1_num_lt_ref_bufs > 0)
{
WORD32 i;
struct dpb_info_t *ps_next_dpb;
/* ps_unmark_node points to the node to be removed */
/* from long term list. */
struct dpb_info_t *ps_unmark_node;
//Find the node with matching LTIndex
ps_next_dpb = ps_dpb_mgr->ps_dpb_ht_head;
if(ps_next_dpb->u1_lt_idx == u4_lt_idx)
{
ps_unmark_node = ps_next_dpb;
}
else
{
for(i = 1; i < ps_dpb_mgr->u1_num_lt_ref_bufs; i++)
{
if(ps_next_dpb->ps_prev_long->u1_lt_idx == u4_lt_idx)
break;
ps_next_dpb = ps_next_dpb->ps_prev_long;
}
if(i == ps_dpb_mgr->u1_num_lt_ref_bufs)
*pi4_status = 1;
else
ps_unmark_node = ps_next_dpb->ps_prev_long;
}
if(*pi4_status == 0)
{
if(u1_fld_pic_flag)
{
if(ps_lt_node_to_insert != ps_unmark_node)
{
UWORD8 u1_deleted = 0;
/* for the ps_unmark_node mark the corresponding field */
/* field as unused for reference */
if(ps_unmark_node->s_top_field.u1_long_term_frame_idx
== u4_lt_idx)
{
ps_unmark_node->s_top_field.u1_reference_info =
UNUSED_FOR_REF;
ps_unmark_node->s_top_field.u1_long_term_frame_idx =
MAX_REF_BUFS + 1;
u1_deleted = 1;
}
if(ps_unmark_node->s_bot_field.u1_long_term_frame_idx
== u4_lt_idx)
{
ps_unmark_node->s_bot_field.u1_reference_info =
UNUSED_FOR_REF;
ps_unmark_node->s_bot_field.u1_long_term_frame_idx =
MAX_REF_BUFS + 1;
u1_deleted = 1;
}
if(!u1_deleted)
{
UWORD32 i4_error_code;
i4_error_code = ERROR_DBP_MANAGER_T;
return i4_error_code;
}
}
ps_unmark_node->u1_used_as_ref =
ps_unmark_node->s_top_field.u1_reference_info
| ps_unmark_node->s_bot_field.u1_reference_info;
}
else
ps_unmark_node->u1_used_as_ref = UNUSED_FOR_REF;
if(UNUSED_FOR_REF == ps_unmark_node->u1_used_as_ref)
{
if(ps_unmark_node == ps_dpb_mgr->ps_dpb_ht_head)
ps_dpb_mgr->ps_dpb_ht_head = ps_next_dpb->ps_prev_long;
ps_unmark_node->u1_lt_idx = MAX_REF_BUFS + 1;
ps_unmark_node->s_top_field.u1_reference_info =
UNUSED_FOR_REF;
ps_unmark_node->s_bot_field.u1_reference_info =
UNUSED_FOR_REF;
// Release the physical buffer
ih264d_free_ref_pic_mv_bufs(ps_dpb_mgr->pv_codec_handle,
ps_unmark_node->u1_buf_id);
ps_next_dpb->ps_prev_long = ps_unmark_node->ps_prev_long; //update link
ps_unmark_node->ps_prev_long = NULL;
ps_dpb_mgr->u1_num_lt_ref_bufs--; //decrement LT buf count
}
}
}
return OK;
}
/*!
**************************************************************************
* \if Function name : ih264d_insert_lt_node \endif
*
* \brief
* Insert a buffer into the LT linked list at a given LT index
*
* \return
* none
**************************************************************************
*/
WORD32 ih264d_insert_lt_node(dpb_manager_t *ps_dpb_mgr,
struct dpb_info_t *ps_mov_node,
UWORD32 u4_lt_idx,
UWORD8 u1_fld_pic_flag)
{
UWORD8 u1_mark_top_field_long_term = 0;
UWORD8 u1_mark_bot_field_long_term = 0;
{
if(u1_fld_pic_flag)
{
/* Assign corresponding field (top or bottom) long_term_frame_idx */
if((ps_mov_node->s_top_field.u1_reference_info == IS_LONG_TERM)
&& (ps_mov_node->s_bot_field.u1_reference_info
== IS_LONG_TERM))
{
if(ps_mov_node->u1_lt_idx == u4_lt_idx)
u1_mark_bot_field_long_term = 1;
else
{
UWORD32 i4_error_code;
i4_error_code = ERROR_DBP_MANAGER_T;
return i4_error_code;
}
}
else if(ps_mov_node->s_top_field.u1_reference_info == IS_LONG_TERM)
{
u1_mark_top_field_long_term = 1;
}
if(!(u1_mark_top_field_long_term || u1_mark_bot_field_long_term))
{
UWORD32 i4_error_code;
i4_error_code = ERROR_DBP_MANAGER_T;
return i4_error_code;
}
}
else
{
ps_mov_node->s_top_field.u1_reference_info = IS_LONG_TERM;
ps_mov_node->s_bot_field.u1_reference_info = IS_LONG_TERM;
ps_mov_node->s_top_field.u1_long_term_frame_idx = u4_lt_idx;
ps_mov_node->s_bot_field.u1_long_term_frame_idx = u4_lt_idx;
}
ps_mov_node->u1_lt_idx = u4_lt_idx; //Assign the LT index to the node
ps_mov_node->ps_pic_buf->u1_long_term_frm_idx = u4_lt_idx;
ps_mov_node->u1_used_as_ref = IS_LONG_TERM;
/* Insert the new long term in the LT list with u4_lt_idx */
/* in ascending order. */
if(ps_dpb_mgr->u1_num_lt_ref_bufs > 0)
{
struct dpb_info_t *ps_next_dpb = ps_dpb_mgr->ps_dpb_ht_head;
if(u4_lt_idx < ps_next_dpb->u1_lt_idx)
{
//LTIndex to be inserted is the smallest LT index
//Update head and point prev to the next higher index
ps_mov_node->ps_prev_long = ps_next_dpb;
ps_dpb_mgr->ps_dpb_ht_head = ps_mov_node;
}
else
{
WORD32 i;
struct dpb_info_t *ps_nxtDPB = ps_next_dpb;
ps_next_dpb = ps_next_dpb->ps_prev_long;
for(i = 1; i < ps_dpb_mgr->u1_num_lt_ref_bufs; i++)
{
if(ps_next_dpb->u1_lt_idx > u4_lt_idx)
break;
ps_nxtDPB = ps_next_dpb;
ps_next_dpb = ps_next_dpb->ps_prev_long;
}
ps_nxtDPB->ps_prev_long = ps_mov_node;
ps_mov_node->ps_prev_long = ps_next_dpb;
}
}
else
{
ps_dpb_mgr->ps_dpb_ht_head = ps_mov_node;
ps_mov_node->ps_prev_long = NULL;
}
/* Identify the picture buffer as a long term picture buffer */
ps_mov_node->ps_pic_buf->u1_is_short = 0;
/* Increment LT buf count only if new LT node inserted */
/* If Increment during top_field is done, don't increment */
/* for bottom field, as both them are part of same pic. */
if(!u1_mark_bot_field_long_term)
ps_dpb_mgr->u1_num_lt_ref_bufs++;
}
return OK;
}
/*!
**************************************************************************
* \if Function name : ih264d_insert_st_node \endif
*
* \brief
* Adds a short term reference picture into the ST linked list
*
* \return
* None
*
* \note
* Called only for a new coded picture with nal_ref_idc!=0
**************************************************************************
*/
WORD32 ih264d_insert_st_node(dpb_manager_t *ps_dpb_mgr,
struct pic_buffer_t *ps_pic_buf,
UWORD8 u1_buf_id,
UWORD32 u4_cur_pic_num)
{
WORD32 i;
struct dpb_info_t *ps_dpb_info = ps_dpb_mgr->as_dpb_info;
UWORD8 u1_picture_type = ps_pic_buf->u1_picturetype;
/* Find an unused dpb location */
for(i = 0; i < MAX_REF_BUFS; i++)
{
if((ps_dpb_info[i].ps_pic_buf == ps_pic_buf)
&& ps_dpb_info[i].u1_used_as_ref)
{
/* Can occur only for field bottom pictures */
ps_dpb_info[i].s_bot_field.u1_reference_info = IS_SHORT_TERM;
/*signal an error in the case of frame pic*/
if(ps_dpb_info[i].ps_pic_buf->u1_pic_type == FRM_PIC)
{
return ERROR_DBP_MANAGER_T;
}
else
{
return OK;
}
}
if((ps_dpb_info[i].u1_used_as_ref == UNUSED_FOR_REF)
&& (ps_dpb_info[i].s_top_field.u1_reference_info
== UNUSED_FOR_REF)
&& (ps_dpb_info[i].s_bot_field.u1_reference_info
== UNUSED_FOR_REF))
break;
}
if(i == MAX_REF_BUFS)
{
UWORD32 i4_error_code;
i4_error_code = ERROR_DBP_MANAGER_T;
return i4_error_code;
}
/* Create dpb info */
ps_dpb_info[i].ps_pic_buf = ps_pic_buf;
ps_dpb_info[i].ps_prev_short = ps_dpb_mgr->ps_dpb_st_head;
ps_dpb_info[i].u1_buf_id = u1_buf_id;
ps_dpb_info[i].u1_used_as_ref = TRUE;
ps_dpb_info[i].u1_lt_idx = MAX_REF_BUFS + 1;
ps_dpb_info[i].i4_frame_num = u4_cur_pic_num;
ps_dpb_info[i].ps_pic_buf->i4_frame_num = u4_cur_pic_num;
/* update the head node of linked list to point to the cur Pic */
ps_dpb_mgr->ps_dpb_st_head = ps_dpb_info + i;
// Increment Short term bufCount
ps_dpb_mgr->u1_num_st_ref_bufs++;
/* Identify the picture as a short term picture buffer */
ps_pic_buf->u1_is_short = IS_SHORT_TERM;
if((u1_picture_type & 0x03) == FRM_PIC)
{
ps_dpb_info[i].u1_used_as_ref = IS_SHORT_TERM;
ps_dpb_info[i].s_top_field.u1_reference_info = IS_SHORT_TERM;
ps_dpb_info[i].s_bot_field.u1_reference_info = IS_SHORT_TERM;
}
if((u1_picture_type & 0x03) == TOP_FLD)
ps_dpb_info[i].s_top_field.u1_reference_info = IS_SHORT_TERM;
if((u1_picture_type & 0x03) == BOT_FLD)
ps_dpb_info[i].s_bot_field.u1_reference_info = IS_SHORT_TERM;
return OK;
}
/*!
**************************************************************************
* \if Function name : ih264d_delete_st_node_or_make_lt \endif
*
* \brief
* Delete short term ref with a given picNum from the ST linked list or
* make it an LT node
*
* \return
* 0 - if successful; -1 - otherwise
*
* \note
* Common parts to MMCO==1 and MMCO==3 have been combined here
**************************************************************************
*/
WORD32 ih264d_delete_st_node_or_make_lt(dpb_manager_t *ps_dpb_mgr,
WORD32 i4_pic_num,
UWORD32 u4_lt_idx,
UWORD8 u1_fld_pic_flag)
{
WORD32 i;
struct dpb_info_t *ps_next_dpb;
WORD32 i4_frame_num = i4_pic_num;
struct dpb_info_t *ps_unmark_node = NULL;
UWORD8 u1_del_node = 0, u1_del_st = 0;
UWORD8 u1_reference_type = UNUSED_FOR_REF;
WORD32 ret;
if(u1_fld_pic_flag)
{
i4_frame_num = i4_frame_num >> 1;
if(u4_lt_idx == (MAX_REF_BUFS + 1))
u1_reference_type = UNUSED_FOR_REF;
else
u1_reference_type = IS_LONG_TERM;
}
//Find the node with matching picNum
ps_next_dpb = ps_dpb_mgr->ps_dpb_st_head;
if((WORD32)ps_next_dpb->i4_frame_num == i4_frame_num)
{
ps_unmark_node = ps_next_dpb;
}
else
{
for(i = 1; i < ps_dpb_mgr->u1_num_st_ref_bufs; i++)
{
if((WORD32)ps_next_dpb->ps_prev_short->i4_frame_num == i4_frame_num)
break;
ps_next_dpb = ps_next_dpb->ps_prev_short;
}
if(i == ps_dpb_mgr->u1_num_st_ref_bufs)
{
if(ps_dpb_mgr->u1_num_gaps)
{
ret = ih264d_delete_gap_frm_mmco(ps_dpb_mgr, i4_frame_num, &u1_del_st);
if(ret != OK)
return ret;
}
else
{
UWORD32 i4_error_code;
i4_error_code = ERROR_DBP_MANAGER_T;
return i4_error_code;
}
if(u1_del_st)
{
UWORD32 i4_error_code;
i4_error_code = ERROR_DBP_MANAGER_T;
return i4_error_code;
}
else
{
return 0;
}
}
else
ps_unmark_node = ps_next_dpb->ps_prev_short;
}
if(u1_fld_pic_flag)
{
/* Mark the corresponding field ( top or bot) as */
/* UNUSED_FOR_REF or IS_LONG_TERM depending on */
/* u1_reference_type. */
if(ps_unmark_node->s_top_field.i4_pic_num == i4_pic_num)
{
ps_unmark_node->s_top_field.u1_reference_info = u1_reference_type;
ps_unmark_node->s_top_field.u1_long_term_frame_idx = u4_lt_idx;
{
UWORD8 *pu1_src = ps_unmark_node->ps_pic_buf->pu1_col_zero_flag;
WORD32 i4_size = ((ps_dpb_mgr->u2_pic_wd
* ps_dpb_mgr->u2_pic_ht) >> 5);
/* memset the colocated zero u4_flag buffer */
memset(pu1_src, 0, i4_size);
}
}
else if(ps_unmark_node->s_bot_field.i4_pic_num == i4_pic_num)
{
ps_unmark_node->s_bot_field.u1_reference_info = u1_reference_type;
ps_unmark_node->s_bot_field.u1_long_term_frame_idx = u4_lt_idx;
{
UWORD8 *pu1_src =
ps_unmark_node->ps_pic_buf->pu1_col_zero_flag
+ ((ps_dpb_mgr->u2_pic_wd
* ps_dpb_mgr->u2_pic_ht)
>> 5);
WORD32 i4_size = ((ps_dpb_mgr->u2_pic_wd
* ps_dpb_mgr->u2_pic_ht) >> 5);
/* memset the colocated zero u4_flag buffer */
memset(pu1_src, 0, i4_size);
}
}
ps_unmark_node->u1_used_as_ref =
ps_unmark_node->s_top_field.u1_reference_info
| ps_unmark_node->s_bot_field.u1_reference_info;
}
else
{
ps_unmark_node->u1_used_as_ref = UNUSED_FOR_REF;
ps_unmark_node->s_top_field.u1_reference_info = UNUSED_FOR_REF;
ps_unmark_node->s_bot_field.u1_reference_info = UNUSED_FOR_REF;
{
UWORD8 *pu1_src = ps_unmark_node->ps_pic_buf->pu1_col_zero_flag;
WORD32 i4_size = ((ps_dpb_mgr->u2_pic_wd
* ps_dpb_mgr->u2_pic_ht) >> 4);
/* memset the colocated zero u4_flag buffer */
memset(pu1_src, 0, i4_size);
}
}
if(!(ps_unmark_node->u1_used_as_ref & IS_SHORT_TERM))
{
if(ps_unmark_node == ps_dpb_mgr->ps_dpb_st_head)
ps_dpb_mgr->ps_dpb_st_head = ps_next_dpb->ps_prev_short;
else
ps_next_dpb->ps_prev_short = ps_unmark_node->ps_prev_short; //update link
ps_dpb_mgr->u1_num_st_ref_bufs--; //decrement ST buf count
u1_del_node = 1;
}
if(u4_lt_idx == MAX_REF_BUFS + 1)
{
if(u1_del_node)
{
// Release the physical buffer
ih264d_free_ref_pic_mv_bufs(ps_dpb_mgr->pv_codec_handle,
ps_unmark_node->u1_buf_id);
ps_unmark_node->ps_prev_short = NULL;
}
}
else
{
WORD32 i4_status;
//If another node has the same LT index, delete that node
ret = ih264d_delete_lt_node(ps_dpb_mgr, u4_lt_idx,
u1_fld_pic_flag, ps_unmark_node, &i4_status);
if(ret != OK)
return ret;
// Now insert the short term node as a long term node
ret = ih264d_insert_lt_node(ps_dpb_mgr, ps_unmark_node, u4_lt_idx,
u1_fld_pic_flag);
if(ret != OK)
return ret;
}
return OK;
}
/*!
**************************************************************************
* \if Function name : ih264d_reset_ref_bufs \endif
*
* \brief
* Called if MMCO==5/7 or on the first slice of an IDR picture
*
* \return
* none
**************************************************************************
*/
void ih264d_reset_ref_bufs(dpb_manager_t *ps_dpb_mgr)
{
WORD32 i;
struct dpb_info_t *ps_dpb_info = ps_dpb_mgr->as_dpb_info;
for(i = 0; i < MAX_REF_BUFS; i++)
{
if(ps_dpb_info[i].u1_used_as_ref)
{
ps_dpb_info[i].u1_used_as_ref = UNUSED_FOR_REF;
ps_dpb_info[i].u1_lt_idx = MAX_REF_BUFS + 1;
ps_dpb_info[i].ps_prev_short = NULL;
ps_dpb_info[i].ps_prev_long = NULL;
ps_dpb_info[i].ps_pic_buf = NULL;
ps_dpb_info[i].s_top_field.u1_reference_info = UNUSED_FOR_REF;
ps_dpb_info[i].s_bot_field.u1_reference_info = UNUSED_FOR_REF;
ps_dpb_info[i].s_top_field.u1_long_term_frame_idx = MAX_REF_BUFS + 1;
ps_dpb_info[i].s_bot_field.u1_long_term_frame_idx = MAX_REF_BUFS + 1;
//Release physical buffer
ih264d_free_ref_pic_mv_bufs(ps_dpb_mgr->pv_codec_handle,
ps_dpb_info[i].u1_buf_id);
}
}
ps_dpb_mgr->u1_num_st_ref_bufs = ps_dpb_mgr->u1_num_lt_ref_bufs = 0;
ps_dpb_mgr->ps_dpb_st_head = NULL;
ps_dpb_mgr->ps_dpb_ht_head = NULL;
/* release all gaps */
ps_dpb_mgr->u1_num_gaps = 0;
for(i = 0; i < MAX_FRAMES; i++)
{
ps_dpb_mgr->ai4_gaps_start_frm_num[i] = INVALID_FRAME_NUM;
ps_dpb_mgr->ai4_gaps_end_frm_num[i] = 0;
ps_dpb_mgr->ai1_gaps_per_seq[i] = 0;
}
}
/*!
**************************************************************************
* \if Function name : Name \endif
*
* \brief
* create the default index list after an MMCO
*
* \return
* 0 - if no_error; -1 - error
*
**************************************************************************
*/
WORD32 ih264d_update_default_index_list(dpb_manager_t *ps_dpb_mgr)
{
WORD32 i;
struct dpb_info_t *ps_next_dpb = ps_dpb_mgr->ps_dpb_st_head;
for(i = 0; i < ps_dpb_mgr->u1_num_st_ref_bufs; i++)
{
ps_dpb_mgr->ps_def_dpb[i] = ps_next_dpb->ps_pic_buf;
ps_next_dpb = ps_next_dpb->ps_prev_short;
}
ps_next_dpb = ps_dpb_mgr->ps_dpb_ht_head;
for(;i< ps_dpb_mgr->u1_num_st_ref_bufs + ps_dpb_mgr->u1_num_lt_ref_bufs; i++)
{
ps_dpb_mgr->ps_def_dpb[i] = ps_next_dpb->ps_pic_buf;
ps_next_dpb = ps_next_dpb->ps_prev_long;
}
return 0;
}
/*!
**************************************************************************
* \if Function name : ref_idx_reordering \endif
*
* \brief
* Parse the bitstream and reorder indices for the current slice
*
* \return
* 0 - if no_error; -1 - error
*
* \note
* Called only if ref_idx_reordering_flag_l0 is decoded as 1
* Remove error checking for unmatching picNum or LTIndex later (if not needed)
* \para
* This section implements 7.3.3.1 and 8.2.6.4
* Uses the default index list as the starting point and
* remaps the picNums sent to the next higher index in the
* modified list. The unmodified ones are copied from the
* default to modified list retaining their order in the default list.
*
**************************************************************************
*/
WORD32 ih264d_ref_idx_reordering(dec_struct_t *ps_dec, UWORD8 uc_lx)
{
dpb_manager_t *ps_dpb_mgr = ps_dec->ps_dpb_mgr;
UWORD16 u4_cur_pic_num = ps_dec->ps_cur_slice->u2_frame_num;
/*< Maximum Picture Number Minus 1 */
UWORD16 ui_max_frame_num =
ps_dec->ps_cur_sps->u2_u4_max_pic_num_minus1 + 1;
WORD32 i;
UWORD32 ui_remapIdc, ui_nextUev;
WORD16 u2_pred_frame_num = u4_cur_pic_num;
WORD32 i_temp;
UWORD16 u2_def_mod_flag = 0; /* Flag to keep track of which indices have been remapped */
UWORD8 modCount = 0;
UWORD32 *pu4_bitstrm_buf = ps_dec->ps_bitstrm->pu4_buffer;
UWORD32 *pu4_bitstrm_ofst = &ps_dec->ps_bitstrm->u4_ofst;
dec_slice_params_t *ps_cur_slice = ps_dec->ps_cur_slice;
UWORD8 u1_field_pic_flag = ps_cur_slice->u1_field_pic_flag;
if(u1_field_pic_flag)
{
u4_cur_pic_num = u4_cur_pic_num * 2 + 1;
ui_max_frame_num = ui_max_frame_num * 2;
}
u2_pred_frame_num = u4_cur_pic_num;
ui_remapIdc = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
while(ui_remapIdc != 3)
{
ui_nextUev = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
if(ui_remapIdc != 2)
{
ui_nextUev = ui_nextUev + 1;
if(ui_remapIdc == 0)
{
// diffPicNum is -ve
i_temp = u2_pred_frame_num - ui_nextUev;
if(i_temp < 0)
i_temp += ui_max_frame_num;
}
else
{
// diffPicNum is +ve
i_temp = u2_pred_frame_num + ui_nextUev;
if(i_temp >= ui_max_frame_num)
i_temp -= ui_max_frame_num;
}
/* Find the dpb with the matching picNum (picNum==frameNum for framePic) */
if(i_temp > u4_cur_pic_num)
i_temp = i_temp - ui_max_frame_num;
for(i = 0; i < (ps_cur_slice->u1_initial_list_size[uc_lx]); i++)
{
if(ps_dpb_mgr->ps_init_dpb[uc_lx][i]->i4_pic_num == i_temp)
break;
}
if(i == (ps_cur_slice->u1_initial_list_size[uc_lx]))
{
UWORD32 i4_error_code;
i4_error_code = ERROR_DBP_MANAGER_T;
return i4_error_code;
}
u2_def_mod_flag |= (1 << i);
ps_dpb_mgr->ps_mod_dpb[uc_lx][modCount++] =
ps_dpb_mgr->ps_init_dpb[uc_lx][i];
u2_pred_frame_num = i_temp; //update predictor to be the picNum just obtained
}
else //2
{
UWORD8 u1_lt_idx = (UWORD8)ui_nextUev;
for(i = 0; i < (ps_cur_slice->u1_initial_list_size[uc_lx]); i++)
{
if(!ps_dpb_mgr->ps_init_dpb[uc_lx][i]->u1_is_short)
{
if(ps_dpb_mgr->ps_init_dpb[uc_lx][i]->u1_long_term_pic_num
== u1_lt_idx)
break;
}
}
if(i == (ps_cur_slice->u1_initial_list_size[uc_lx]))
{
UWORD32 i4_error_code;
i4_error_code = ERROR_DBP_MANAGER_T;
return i4_error_code;
}
u2_def_mod_flag |= (1 << i);
ps_dpb_mgr->ps_mod_dpb[uc_lx][modCount++] =
ps_dpb_mgr->ps_init_dpb[uc_lx][i];
}
ui_remapIdc = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
/* Get the remapping_idc - 0/1/2/3 */
}
//Handle the ref indices that were not remapped
for(i = 0; i < (ps_cur_slice->u1_num_ref_idx_lx_active[uc_lx]); i++)
{
if(!(u2_def_mod_flag & (1 << i)))
ps_dpb_mgr->ps_mod_dpb[uc_lx][modCount++] =
ps_dpb_mgr->ps_init_dpb[uc_lx][i];
}
return OK;
}
/*!
**************************************************************************
* \if Function name : ih264d_read_mmco_commands \endif
*
* \brief
* Parses MMCO commands and stores them in a structure for later use.
*
* \return
* 0 - No error; -1 - Error
*
* \note
* This function stores MMCO commands in structure only for the first time.
* In case of MMCO commands being issued for same Picture Number, they are
* just parsed and not stored them in the structure.
*
**************************************************************************
*/
WORD32 ih264d_read_mmco_commands(struct _DecStruct * ps_dec)
{
dec_bit_stream_t *ps_bitstrm = ps_dec->ps_bitstrm;
dpb_commands_t *ps_dpb_cmds = ps_dec->ps_dpb_cmds;
dec_slice_params_t * ps_slice = ps_dec->ps_cur_slice;
WORD32 j;
UWORD8 u1_buf_mode;
struct MMCParams *ps_mmc_params;
UWORD32 *pu4_bitstrm_buf = ps_dec->ps_bitstrm->pu4_buffer;
UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
UWORD32 u4_bit_ofst = ps_dec->ps_bitstrm->u4_ofst;
ps_slice->u1_mmco_equalto5 = 0;
{
if(ps_dec->u1_nal_unit_type == IDR_SLICE_NAL)
{
ps_slice->u1_no_output_of_prior_pics_flag =
ih264d_get_bit_h264(ps_bitstrm);
COPYTHECONTEXT("SH: no_output_of_prior_pics_flag",
ps_slice->u1_no_output_of_prior_pics_flag);
ps_slice->u1_long_term_reference_flag = ih264d_get_bit_h264(
ps_bitstrm);
COPYTHECONTEXT("SH: long_term_reference_flag",
ps_slice->u1_long_term_reference_flag);
ps_dpb_cmds->u1_idr_pic = 1;
ps_dpb_cmds->u1_no_output_of_prior_pics_flag =
ps_slice->u1_no_output_of_prior_pics_flag;
ps_dpb_cmds->u1_long_term_reference_flag =
ps_slice->u1_long_term_reference_flag;
}
else
{
u1_buf_mode = ih264d_get_bit_h264(ps_bitstrm); //0 - sliding window; 1 - arbitrary
COPYTHECONTEXT("SH: adaptive_ref_pic_buffering_flag", u1_buf_mode);
ps_dpb_cmds->u1_buf_mode = u1_buf_mode;
j = 0;
if(u1_buf_mode == 1)
{
UWORD32 u4_mmco;
UWORD32 u4_diff_pic_num;
UWORD32 u4_lt_idx, u4_max_lt_idx;
u4_mmco = ih264d_uev(pu4_bitstrm_ofst,
pu4_bitstrm_buf);
while(u4_mmco != END_OF_MMCO)
{
if (j >= MAX_REF_BUFS)
{
ALOGE("b/25818142");
android_errorWriteLog(0x534e4554, "25818142");
ps_dpb_cmds->u1_num_of_commands = 0;
return -1;
}
ps_mmc_params = &ps_dpb_cmds->as_mmc_params[j];
ps_mmc_params->u4_mmco = u4_mmco;
switch(u4_mmco)
{
case MARK_ST_PICNUM_AS_NONREF:
u4_diff_pic_num = ih264d_uev(pu4_bitstrm_ofst,
pu4_bitstrm_buf);
//Get absDiffPicnumMinus1
ps_mmc_params->u4_diff_pic_num = u4_diff_pic_num;
break;
case MARK_LT_INDEX_AS_NONREF:
u4_lt_idx = ih264d_uev(pu4_bitstrm_ofst,
pu4_bitstrm_buf);
ps_mmc_params->u4_lt_idx = u4_lt_idx;
break;
case MARK_ST_PICNUM_AS_LT_INDEX:
u4_diff_pic_num = ih264d_uev(pu4_bitstrm_ofst,
pu4_bitstrm_buf);
ps_mmc_params->u4_diff_pic_num = u4_diff_pic_num;
u4_lt_idx = ih264d_uev(pu4_bitstrm_ofst,
pu4_bitstrm_buf);
ps_mmc_params->u4_lt_idx = u4_lt_idx;
break;
case SET_MAX_LT_INDEX:
{
u4_max_lt_idx = ih264d_uev(pu4_bitstrm_ofst,
pu4_bitstrm_buf);
ps_mmc_params->u4_max_lt_idx_plus1 = u4_max_lt_idx;
break;
}
case RESET_REF_PICTURES:
{
ps_slice->u1_mmco_equalto5 = 1;
break;
}
case SET_LT_INDEX:
u4_lt_idx = ih264d_uev(pu4_bitstrm_ofst,
pu4_bitstrm_buf);
ps_mmc_params->u4_lt_idx = u4_lt_idx;
break;
default:
break;
}
u4_mmco = ih264d_uev(pu4_bitstrm_ofst,
pu4_bitstrm_buf);
j++;
}
ps_dpb_cmds->u1_num_of_commands = j;
}
}
ps_dpb_cmds->u1_dpb_commands_read = 1;
ps_dpb_cmds->u1_dpb_commands_read_slc = 1;
}
u4_bit_ofst = ps_dec->ps_bitstrm->u4_ofst - u4_bit_ofst;
return u4_bit_ofst;
}
/*!
**************************************************************************
* \if Function name : ih264d_do_mmco_buffer \endif
*
* \brief
* Perform decoded picture buffer memory management control operations
*
* \return
* 0 - No error; -1 - Error
*
* \note
* Bitstream is also parsed here to get the MMCOs
*
**************************************************************************
*/
WORD32 ih264d_do_mmco_buffer(dpb_commands_t *ps_dpb_cmds,
dpb_manager_t *ps_dpb_mgr,
UWORD8 u1_numRef_frames_for_seq, /*!< num_ref_frames from active SeqParSet*/
UWORD32 u4_cur_pic_num,
UWORD32 u2_u4_max_pic_num_minus1,
UWORD8 u1_nal_unit_type,
struct pic_buffer_t *ps_pic_buf,
UWORD8 u1_buf_id,
UWORD8 u1_fld_pic_flag,
UWORD8 u1_curr_pic_in_err)
{
WORD32 i;
UWORD8 u1_buf_mode, u1_marked_lt;
struct dpb_info_t *ps_next_dpb;
UWORD8 u1_num_gaps;
UWORD8 u1_del_node = 1;
UWORD8 u1_insert_st_pic = 1;
WORD32 ret;
UNUSED(u1_nal_unit_type);
UNUSED(u2_u4_max_pic_num_minus1);
u1_buf_mode = ps_dpb_cmds->u1_buf_mode; //0 - sliding window; 1 - Adaptive
u1_marked_lt = 0;
u1_num_gaps = ps_dpb_mgr->u1_num_gaps;
if(!u1_buf_mode)
{
//Sliding window - implements 8.2.5.3
if((ps_dpb_mgr->u1_num_st_ref_bufs
+ ps_dpb_mgr->u1_num_lt_ref_bufs + u1_num_gaps)
== u1_numRef_frames_for_seq)
{
UWORD8 u1_new_node_flag = 1;
if((0 == ps_dpb_mgr->u1_num_st_ref_bufs) && (0 == u1_num_gaps))
{
UWORD32 i4_error_code;
i4_error_code = ERROR_DBP_MANAGER_T;
return i4_error_code;
}
// Chase the links to reach the last but one picNum, if available
ps_next_dpb = ps_dpb_mgr->ps_dpb_st_head;
if(ps_dpb_mgr->u1_num_st_ref_bufs > 1)
{
if(ps_next_dpb->i4_frame_num == (WORD32)u4_cur_pic_num)
{
/* Incase of filed pictures top_field has been allocated */
/* picture buffer and complementary bottom field pair comes */
/* then the sliding window mechanism should not allocate a */
/* new node */
u1_new_node_flag = 0;
}
for(i = 1; i < (ps_dpb_mgr->u1_num_st_ref_bufs - 1); i++)
{
if(ps_next_dpb == NULL)
{
UWORD32 i4_error_code;
i4_error_code = ERROR_DBP_MANAGER_T;
return i4_error_code;
}
if(ps_next_dpb->i4_frame_num == (WORD32)u4_cur_pic_num)
{
/* Incase of field pictures top_field has been allocated */
/* picture buffer and complementary bottom field pair comes */
/* then the sliding window mechanism should not allocate a */
/* new node */
u1_new_node_flag = 0;
}
ps_next_dpb = ps_next_dpb->ps_prev_short;
}
if(ps_next_dpb->ps_prev_short->ps_prev_short != NULL)
{
UWORD32 i4_error_code;
i4_error_code = ERROR_DBP_MANAGER_T;
return i4_error_code;
}
if(u1_new_node_flag)
{
if(u1_num_gaps)
{
ret = ih264d_delete_gap_frm_sliding(ps_dpb_mgr,
ps_next_dpb->ps_prev_short->i4_frame_num,
&u1_del_node);
if(ret != OK)
return ret;
}
if(u1_del_node)
{
ps_dpb_mgr->u1_num_st_ref_bufs--;
ps_next_dpb->ps_prev_short->u1_used_as_ref =
UNUSED_FOR_REF;
ps_next_dpb->ps_prev_short->s_top_field.u1_reference_info =
UNUSED_FOR_REF;
ps_next_dpb->ps_prev_short->s_bot_field.u1_reference_info =
UNUSED_FOR_REF;
ih264d_free_ref_pic_mv_bufs(ps_dpb_mgr->pv_codec_handle,
ps_next_dpb->ps_prev_short->u1_buf_id);
ps_next_dpb->ps_prev_short->ps_pic_buf = NULL;
ps_next_dpb->ps_prev_short = NULL;
}
}
}
else
{
if(ps_dpb_mgr->u1_num_st_ref_bufs)
{
ret = ih264d_delete_gap_frm_sliding(ps_dpb_mgr,
ps_next_dpb->i4_frame_num,
&u1_del_node);
if(ret != OK)
return ret;
if((ps_next_dpb->i4_frame_num != (WORD32)u4_cur_pic_num)
&& u1_del_node)
{
ps_dpb_mgr->u1_num_st_ref_bufs--;
ps_next_dpb->u1_used_as_ref = FALSE;
ps_next_dpb->s_top_field.u1_reference_info =
UNUSED_FOR_REF;
ps_next_dpb->s_bot_field.u1_reference_info =
UNUSED_FOR_REF;
ih264d_free_ref_pic_mv_bufs(ps_dpb_mgr->pv_codec_handle,
ps_next_dpb->u1_buf_id);
ps_next_dpb->ps_pic_buf = NULL;
ps_next_dpb->ps_prev_short = NULL;
ps_dpb_mgr->ps_dpb_st_head = NULL;
ps_next_dpb = NULL;
}
else if(ps_next_dpb->i4_frame_num == (WORD32)u4_cur_pic_num)
{
if(u1_curr_pic_in_err)
{
u1_insert_st_pic = 0;
}
else if(ps_dpb_mgr->u1_num_st_ref_bufs > 0)
{
ps_dpb_mgr->u1_num_st_ref_bufs--;
ps_next_dpb->u1_used_as_ref = FALSE;
ps_next_dpb->s_top_field.u1_reference_info =
UNUSED_FOR_REF;
ps_next_dpb->s_bot_field.u1_reference_info =
UNUSED_FOR_REF;
ih264d_free_ref_pic_mv_bufs(ps_dpb_mgr->pv_codec_handle,
ps_next_dpb->u1_buf_id);
ps_next_dpb->ps_pic_buf = NULL;
ps_next_dpb = NULL;
}
}
}
else
{
ret = ih264d_delete_gap_frm_sliding(ps_dpb_mgr,
INVALID_FRAME_NUM,
&u1_del_node);
if(ret != OK)
return ret;
if(u1_del_node)
{
UWORD32 i4_error_code;
i4_error_code = ERROR_DBP_MANAGER_T;
return i4_error_code;
}
}
}
}
}
else
{
//Adaptive memory control - implements 8.2.5.4
UWORD32 u4_mmco;
UWORD32 u4_diff_pic_num;
WORD32 i4_pic_num;
UWORD32 u4_lt_idx;
WORD32 j;
struct MMCParams *ps_mmc_params;
for(j = 0; j < ps_dpb_cmds->u1_num_of_commands; j++)
{
ps_mmc_params = &ps_dpb_cmds->as_mmc_params[j];
u4_mmco = ps_mmc_params->u4_mmco; //Get MMCO
switch(u4_mmco)
{
case MARK_ST_PICNUM_AS_NONREF:
{
{
UWORD32 i4_cur_pic_num = u4_cur_pic_num;
u4_diff_pic_num = ps_mmc_params->u4_diff_pic_num; //Get absDiffPicnumMinus1
if(u1_fld_pic_flag)
i4_cur_pic_num = i4_cur_pic_num * 2 + 1;
i4_pic_num = i4_cur_pic_num - (u4_diff_pic_num + 1);
}
if(ps_dpb_mgr->u1_num_st_ref_bufs > 0)
{
ret = ih264d_delete_st_node_or_make_lt(ps_dpb_mgr,
i4_pic_num,
MAX_REF_BUFS + 1,
u1_fld_pic_flag);
if(ret != OK)
return ret;
}
else
{
UWORD8 u1_dummy;
ret = ih264d_delete_gap_frm_mmco(ps_dpb_mgr, i4_pic_num, &u1_dummy);
if(ret != OK)
return ret;
}
break;
}
case MARK_LT_INDEX_AS_NONREF:
{
WORD32 i4_status;
u4_lt_idx = ps_mmc_params->u4_lt_idx; //Get long term index
ret = ih264d_delete_lt_node(ps_dpb_mgr,
u4_lt_idx,
u1_fld_pic_flag,
0, &i4_status);
if(ret != OK)
return ret;
if(i4_status)
{
UWORD32 i4_error_code;
i4_error_code = ERROR_DBP_MANAGER_T;
return i4_error_code;
}
break;
}
case MARK_ST_PICNUM_AS_LT_INDEX:
{
{
UWORD32 i4_cur_pic_num = u4_cur_pic_num;
u4_diff_pic_num = ps_mmc_params->u4_diff_pic_num; //Get absDiffPicnumMinus1
if(u1_fld_pic_flag)
i4_cur_pic_num = i4_cur_pic_num * 2 + 1;
i4_pic_num = i4_cur_pic_num - (u4_diff_pic_num + 1);
}
u4_lt_idx = ps_mmc_params->u4_lt_idx; //Get long term index
if(ps_dpb_mgr->u1_num_st_ref_bufs > 0)
{
ret = ih264d_delete_st_node_or_make_lt(ps_dpb_mgr,
i4_pic_num, u4_lt_idx,
u1_fld_pic_flag);
if(ret != OK)
return ret;
}
break;
}
case SET_MAX_LT_INDEX:
{
UWORD8 uc_numLT = ps_dpb_mgr->u1_num_lt_ref_bufs;
u4_lt_idx = ps_mmc_params->u4_max_lt_idx_plus1; //Get Max_long_term_index_plus1
if(u4_lt_idx < ps_dpb_mgr->u1_max_lt_pic_idx_plus1
&& uc_numLT > 0)
{
struct dpb_info_t *ps_nxtDPB;
//Set all LT buffers with index >= u4_lt_idx to nonreference
ps_nxtDPB = ps_dpb_mgr->ps_dpb_ht_head;
ps_next_dpb = ps_nxtDPB->ps_prev_long;
if(ps_nxtDPB->u1_lt_idx >= u4_lt_idx)
{
i = 0;
ps_dpb_mgr->ps_dpb_ht_head = NULL;
}
else
{
for(i = 1; i < uc_numLT; i++)
{
if(ps_next_dpb->u1_lt_idx >= u4_lt_idx)
break;
ps_nxtDPB = ps_next_dpb;
ps_next_dpb = ps_next_dpb->ps_prev_long;
}
ps_nxtDPB->ps_prev_long = NULL; //Terminate the link of the closest LTIndex that is <=Max
}
ps_dpb_mgr->u1_num_lt_ref_bufs = i;
if(i == 0)
ps_next_dpb = ps_nxtDPB;
for(; i < uc_numLT; i++)
{
ps_nxtDPB = ps_next_dpb;
ps_nxtDPB->u1_lt_idx = MAX_REF_BUFS + 1;
ps_nxtDPB->u1_used_as_ref = UNUSED_FOR_REF;
ps_nxtDPB->s_top_field.u1_reference_info =
UNUSED_FOR_REF;
ps_nxtDPB->s_bot_field.u1_reference_info =
UNUSED_FOR_REF;
ps_nxtDPB->ps_pic_buf = NULL;
//Release buffer
ih264d_free_ref_pic_mv_bufs(ps_dpb_mgr->pv_codec_handle,
ps_nxtDPB->u1_buf_id);
ps_next_dpb = ps_nxtDPB->ps_prev_long;
ps_nxtDPB->ps_prev_long = NULL;
}
}
ps_dpb_mgr->u1_max_lt_pic_idx_plus1 = u4_lt_idx;
break;
}
case SET_LT_INDEX:
{
u4_lt_idx = ps_mmc_params->u4_lt_idx; //Get long term index
ret = ih264d_insert_st_node(ps_dpb_mgr, ps_pic_buf, u1_buf_id,
u4_cur_pic_num);
if(ret != OK)
return ret;
ret = ih264d_delete_st_node_or_make_lt(ps_dpb_mgr,
u4_cur_pic_num, u4_lt_idx,
u1_fld_pic_flag);
if(ret != OK)
return ret;
u1_marked_lt = 1;
break;
}
default:
break;
}
if(u4_mmco == RESET_REF_PICTURES || u4_mmco == RESET_ALL_PICTURES)
{
ih264d_reset_ref_bufs(ps_dpb_mgr);
u4_cur_pic_num = 0;
}
}
}
if(!u1_marked_lt && u1_insert_st_pic)
{
ret = ih264d_insert_st_node(ps_dpb_mgr, ps_pic_buf, u1_buf_id,
u4_cur_pic_num);
if(ret != OK)
return ret;
}
return OK;
}
/*****************************************************************************/
/* */
/* Function Name : ih264d_release_pics_in_dpb */
/* */
/* Description : This function deletes all pictures from DPB */
/* */
/* Inputs : h_pic_buf_api: pointer to picture buffer API */
/* u1_disp_bufs: number pictures ready for display */
/* */
/* Globals : None */
/* Outputs : None */
/* Returns : None */
/* */
/* Issues : None */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 22 06 2005 NS Draft */
/* */
/*****************************************************************************/
void ih264d_release_pics_in_dpb(void *pv_dec,
UWORD8 u1_disp_bufs)
{
WORD8 i;
dec_struct_t *ps_dec = (dec_struct_t *)pv_dec;
for(i = 0; i < u1_disp_bufs; i++)
{
ih264_buf_mgr_release((buf_mgr_t *)ps_dec->pv_pic_buf_mgr,
i,
BUF_MGR_REF);
ih264_buf_mgr_release((buf_mgr_t *)ps_dec->pv_mv_buf_mgr,
ps_dec->au1_pic_buf_id_mv_buf_id_map[i],
BUF_MGR_REF);
}
}
/*****************************************************************************/
/* */
/* Function Name : ih264d_delete_gap_frm_sliding */
/* */
/* Description : This function deletes a picture from the list of gaps, */
/* if the frame number of gap frame is lesser than the one */
/* to be deleted by sliding window */
/* Inputs : ps_dpb_mgr: pointer to dpb manager */
/* i4_frame_num: frame number of picture that's going to */
/* be deleted by sliding window */
/* pu1_del_node: holds 0 if a gap is deleted else 1 */
/* Globals : None */
/* Processing : Function searches for frame number lesser than */
/* i4_frame_num in the gaps list */
/* Outputs : None */
/* Returns : None */
/* */
/* Issues : None */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 22 06 2005 NS Draft */
/* */
/*****************************************************************************/
WORD32 ih264d_delete_gap_frm_sliding(dpb_manager_t *ps_dpb_mgr,
WORD32 i4_frame_num,
UWORD8 *pu1_del_node)
{
WORD8 i1_gap_idx, i, j, j_min;
WORD32 *pi4_gaps_start_frm_num, *pi4_gaps_end_frm_num, i4_gap_frame_num;
WORD32 i4_start_frm_num, i4_end_frm_num;
WORD32 i4_max_frm_num;
WORD32 i4_frm_num, i4_gap_frm_num_min;
/* find the least frame num from gaps and current DPB node */
/* Delete the least one */
*pu1_del_node = 1;
if(0 == ps_dpb_mgr->u1_num_gaps)
return OK;
pi4_gaps_start_frm_num = ps_dpb_mgr->ai4_gaps_start_frm_num;
pi4_gaps_end_frm_num = ps_dpb_mgr->ai4_gaps_end_frm_num;
i4_gap_frame_num = INVALID_FRAME_NUM;
i4_max_frm_num = ps_dpb_mgr->i4_max_frm_num;
i1_gap_idx = -1;
if(INVALID_FRAME_NUM != i4_frame_num)
{
i4_gap_frame_num = i4_frame_num;
for(i = 0; i < MAX_FRAMES; i++)
{
i4_start_frm_num = pi4_gaps_start_frm_num[i];
if(INVALID_FRAME_NUM != i4_start_frm_num)
{
i4_end_frm_num = pi4_gaps_end_frm_num[i];
if(i4_end_frm_num < i4_max_frm_num)
{
if(i4_start_frm_num <= i4_gap_frame_num)
{
i4_gap_frame_num = i4_start_frm_num;
i1_gap_idx = i;
}
}
else
{
if(((i4_start_frm_num <= i4_gap_frame_num)
&& (i4_gap_frame_num <= i4_max_frm_num))
|| ((i4_start_frm_num >= i4_gap_frame_num)
&& ((i4_gap_frame_num
+ i4_max_frm_num)
>= i4_end_frm_num)))
{
i4_gap_frame_num = i4_start_frm_num;
i1_gap_idx = i;
}
}
}
}
}
else
{
/* no valid short term buffers, delete one gap from the least start */
/* of gap sequence */
i4_gap_frame_num = pi4_gaps_start_frm_num[0];
i1_gap_idx = 0;
for(i = 1; i < MAX_FRAMES; i++)
{
if(INVALID_FRAME_NUM != pi4_gaps_start_frm_num[i])
{
if(pi4_gaps_start_frm_num[i] < i4_gap_frame_num)
{
i4_gap_frame_num = pi4_gaps_start_frm_num[i];
i1_gap_idx = i;
}
}
}
if(INVALID_FRAME_NUM == i4_gap_frame_num)
{
UWORD32 i4_error_code;
i4_error_code = ERROR_DBP_MANAGER_T;
return i4_error_code;
}
}
if(-1 != i1_gap_idx)
{
/* find least frame_num in the poc_map, which is in this range */
i4_start_frm_num = pi4_gaps_start_frm_num[i1_gap_idx];
if(i4_start_frm_num < 0)
i4_start_frm_num += i4_max_frm_num;
i4_end_frm_num = pi4_gaps_end_frm_num[i1_gap_idx];
if(i4_end_frm_num < 0)
i4_end_frm_num += i4_max_frm_num;
i4_gap_frm_num_min = 0xfffffff;
j_min = MAX_FRAMES;
for(j = 0; j < MAX_FRAMES; j++)
{
i4_frm_num = ps_dpb_mgr->ai4_poc_buf_id_map[j][2];
if((i4_start_frm_num <= i4_frm_num)
&& (i4_end_frm_num >= i4_frm_num))
{
if(i4_frm_num < i4_gap_frm_num_min)
{
j_min = j;
i4_gap_frm_num_min = i4_frm_num;
}
}
}
if(j_min != MAX_FRAMES)
{
ps_dpb_mgr->ai4_poc_buf_id_map[j_min][0] = -1;
ps_dpb_mgr->ai4_poc_buf_id_map[j_min][1] = 0x7fffffff;
ps_dpb_mgr->ai4_poc_buf_id_map[j_min][2] = GAP_FRAME_NUM;
ps_dpb_mgr->i1_gaps_deleted++;
ps_dpb_mgr->ai1_gaps_per_seq[i1_gap_idx]--;
ps_dpb_mgr->u1_num_gaps--;
*pu1_del_node = 0;
if(0 == ps_dpb_mgr->ai1_gaps_per_seq[i1_gap_idx])
{
ps_dpb_mgr->ai4_gaps_start_frm_num[i1_gap_idx] =
INVALID_FRAME_NUM;
ps_dpb_mgr->ai4_gaps_end_frm_num[i1_gap_idx] = 0;
}
}
}
return OK;
}
/*****************************************************************************/
/* */
/* Function Name : ih264d_delete_gap_frm_mmco */
/* */
/* Description : This function deletes a picture from the list of gaps, */
/* if the frame number (specified by mmco commands) to be */
/* deleted is in the range by gap sequence. */
/* */
/* Inputs : ps_dpb_mgr: pointer to dpb manager */
/* i4_frame_num: frame number of picture that's going to */
/* be deleted by mmco */
/* pu1_del_node: holds 0 if a gap is deleted else 1 */
/* Globals : None */
/* Processing : Function searches for frame number lesser in the range */
/* specified by gap sequence */
/* Outputs : None */
/* Returns : None */
/* */
/* Issues : None */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 22 06 2005 NS Draft */
/* */
/*****************************************************************************/
WORD32 ih264d_delete_gap_frm_mmco(dpb_manager_t *ps_dpb_mgr,
WORD32 i4_frame_num,
UWORD8 *pu1_del_node)
{
WORD8 i, j;
WORD32 *pi4_start, *pi4_end;
WORD32 i4_start_frm_num, i4_end_frm_num, i4_max_frm_num;
/* find the least frame num from gaps and current DPB node */
/* Delete the gaps */
*pu1_del_node = 1;
pi4_start = ps_dpb_mgr->ai4_gaps_start_frm_num;
pi4_end = ps_dpb_mgr->ai4_gaps_end_frm_num;
i4_max_frm_num = ps_dpb_mgr->i4_max_frm_num;
if(0 == ps_dpb_mgr->u1_num_gaps)
return OK;
if(i4_frame_num < 0)
i4_frame_num += i4_max_frm_num;
for(i = 0; i < MAX_FRAMES; i++)
{
i4_start_frm_num = pi4_start[i];
if(i4_start_frm_num < 0)
i4_start_frm_num += i4_max_frm_num;
if(INVALID_FRAME_NUM != i4_start_frm_num)
{
i4_end_frm_num = pi4_end[i];
if(i4_end_frm_num < 0)
i4_end_frm_num += i4_max_frm_num;
if((i4_frame_num >= i4_start_frm_num)
&& (i4_frame_num <= i4_end_frm_num))
{
break;
}
else
{
if(((i4_frame_num + i4_max_frm_num) >= i4_start_frm_num)
&& ((i4_frame_num + i4_max_frm_num)
<= i4_end_frm_num))
{
UWORD32 i4_error_code;
i4_error_code = ERROR_DBP_MANAGER_T;
return i4_error_code;
}
}
}
}
/* find frame_num index, in the poc_map which needs to be deleted */
for(j = 0; j < MAX_FRAMES; j++)
{
if(i4_frame_num == ps_dpb_mgr->ai4_poc_buf_id_map[j][2])
break;
}
if(MAX_FRAMES != i)
{
if(j == MAX_FRAMES)
{
UWORD32 i4_error_code;
i4_error_code = ERROR_DBP_MANAGER_T;
return i4_error_code;
}
ps_dpb_mgr->ai4_poc_buf_id_map[j][0] = -1;
ps_dpb_mgr->ai4_poc_buf_id_map[j][1] = 0x7fffffff;
ps_dpb_mgr->ai4_poc_buf_id_map[j][2] = GAP_FRAME_NUM;
ps_dpb_mgr->i1_gaps_deleted++;
ps_dpb_mgr->ai1_gaps_per_seq[i]--;
ps_dpb_mgr->u1_num_gaps--;
*pu1_del_node = 0;
if(0 == ps_dpb_mgr->ai1_gaps_per_seq[i])
{
ps_dpb_mgr->ai4_gaps_start_frm_num[i] = INVALID_FRAME_NUM;
ps_dpb_mgr->ai4_gaps_end_frm_num[i] = 0;
}
}
else
{
UWORD32 i4_error_code;
i4_error_code = ERROR_DBP_MANAGER_T;
return i4_error_code;
}
return OK;
}
/*!
**************************************************************************
* \if Function name : ih264d_do_mmco_for_gaps \endif
*
* \brief
* Perform decoded picture buffer memory management control operations
*
* \return
* 0 - No error; -1 - Error
*
* \note
* Bitstream is also parsed here to get the MMCOs
*
**************************************************************************
*/
WORD32 ih264d_do_mmco_for_gaps(dpb_manager_t *ps_dpb_mgr,
UWORD8 u1_num_ref_frames /*!< num_ref_frames from active SeqParSet*/
)
{
struct dpb_info_t *ps_next_dpb;
UWORD8 u1_num_gaps;
UWORD8 u1_st_ref_bufs, u1_lt_ref_bufs, u1_del_node;
WORD8 i;
WORD32 i4_frame_gaps = 1;
WORD32 ret;
//Sliding window - implements 8.2.5.3, flush out buffers
u1_st_ref_bufs = ps_dpb_mgr->u1_num_st_ref_bufs;
u1_lt_ref_bufs = ps_dpb_mgr->u1_num_lt_ref_bufs;
while(1)
{
u1_num_gaps = ps_dpb_mgr->u1_num_gaps;
if((u1_st_ref_bufs + u1_lt_ref_bufs + u1_num_gaps + i4_frame_gaps)
> u1_num_ref_frames)
{
if(0 == (u1_st_ref_bufs + u1_num_gaps))
{
i4_frame_gaps = 0;
ps_dpb_mgr->u1_num_gaps = (u1_num_ref_frames
- u1_lt_ref_bufs);
}
else
{
u1_del_node = 1;
ps_next_dpb = ps_dpb_mgr->ps_dpb_st_head;
if(u1_st_ref_bufs > 1)
{
for(i = 1; i < (u1_st_ref_bufs - 1); i++)
{
if(ps_next_dpb == NULL)
{
UWORD32 i4_error_code;
i4_error_code = ERROR_DBP_MANAGER_T;
return i4_error_code;
}
ps_next_dpb = ps_next_dpb->ps_prev_short;
}
if(ps_next_dpb->ps_prev_short->ps_prev_short != NULL)
{
return ERROR_DBP_MANAGER_T;
}
if(u1_num_gaps)
{
ret = ih264d_delete_gap_frm_sliding(ps_dpb_mgr,
ps_next_dpb->ps_prev_short->i4_frame_num,
&u1_del_node);
if(ret != OK)
return ret;
}
if(u1_del_node)
{
u1_st_ref_bufs--;
ps_next_dpb->ps_prev_short->u1_used_as_ref =
UNUSED_FOR_REF;
ps_next_dpb->ps_prev_short->s_top_field.u1_reference_info =
UNUSED_FOR_REF;
ps_next_dpb->ps_prev_short->s_bot_field.u1_reference_info =
UNUSED_FOR_REF;
ih264d_free_ref_pic_mv_bufs(ps_dpb_mgr->pv_codec_handle,
ps_next_dpb->ps_prev_short->u1_buf_id);
ps_next_dpb->ps_prev_short->ps_pic_buf = NULL;
ps_next_dpb->ps_prev_short = NULL;
}
}
else
{
if(u1_st_ref_bufs)
{
if(u1_num_gaps)
{
ret = ih264d_delete_gap_frm_sliding(ps_dpb_mgr,
ps_next_dpb->i4_frame_num,
&u1_del_node);
if(ret != OK)
return ret;
}
if(u1_del_node)
{
u1_st_ref_bufs--;
ps_next_dpb->u1_used_as_ref = FALSE;
ps_next_dpb->s_top_field.u1_reference_info =
UNUSED_FOR_REF;
ps_next_dpb->s_bot_field.u1_reference_info =
UNUSED_FOR_REF;
ih264d_free_ref_pic_mv_bufs(ps_dpb_mgr->pv_codec_handle,
ps_next_dpb->u1_buf_id);
ps_next_dpb->ps_pic_buf = NULL;
ps_next_dpb = NULL;
ps_dpb_mgr->ps_dpb_st_head = NULL;
ps_dpb_mgr->u1_num_st_ref_bufs = u1_st_ref_bufs;
}
}
else
{
ret = ih264d_delete_gap_frm_sliding(ps_dpb_mgr,
INVALID_FRAME_NUM,
&u1_del_node);
if(ret != OK)
return ret;
if(u1_del_node)
{
return ERROR_DBP_MANAGER_T;
}
}
}
}
}
else
{
ps_dpb_mgr->u1_num_gaps += i4_frame_gaps;
break;
}
}
ps_dpb_mgr->u1_num_st_ref_bufs = u1_st_ref_bufs;
return OK;
}
/****************************************************************************/
/* */
/* Function Name : ih264d_free_node_from_dpb */
/* */
/* Description : */
/* */
/* Inputs : */
/* */
/* Globals : */
/* */
/* Processing : */
/* */
/* Outputs : */
/* */
/* Returns : */
/* */
/* Known Issues : */
/* */
/* Revision History */
/* */
/* DD MM YY Author Changes */
/* Sarat */
/****************************************************************************/
/**** Function Added for Error Resilience *****/
WORD32 ih264d_free_node_from_dpb(dpb_manager_t *ps_dpb_mgr,
UWORD32 u4_cur_pic_num,
UWORD8 u1_numRef_frames_for_seq)
{
WORD32 i;
UWORD8 u1_num_gaps = ps_dpb_mgr->u1_num_gaps;
struct dpb_info_t *ps_next_dpb;
UWORD8 u1_del_node = 1;
WORD32 ret;
//Sliding window - implements 8.2.5.3
if((ps_dpb_mgr->u1_num_st_ref_bufs + ps_dpb_mgr->u1_num_lt_ref_bufs
+ u1_num_gaps) == u1_numRef_frames_for_seq)
{
UWORD8 u1_new_node_flag = 1;
if((0 == ps_dpb_mgr->u1_num_st_ref_bufs) && (0 == u1_num_gaps))
{
return ERROR_DBP_MANAGER_T;
}
// Chase the links to reach the last but one picNum, if available
ps_next_dpb = ps_dpb_mgr->ps_dpb_st_head;
if(ps_dpb_mgr->u1_num_st_ref_bufs > 1)
{
if(ps_next_dpb->i4_frame_num == (WORD32)u4_cur_pic_num)
{
/* Incase of filed pictures top_field has been allocated */
/* picture buffer and complementary bottom field pair comes */
/* then the sliding window mechanism should not allocate a */
/* new node */
u1_new_node_flag = 0;
}
for(i = 1; i < (ps_dpb_mgr->u1_num_st_ref_bufs - 1); i++)
{
if(ps_next_dpb == NULL)
return ERROR_DBP_MANAGER_T;
if(ps_next_dpb->i4_frame_num == (WORD32)u4_cur_pic_num)
{
/* Incase of field pictures top_field has been allocated */
/* picture buffer and complementary bottom field pair comes */
/* then the sliding window mechanism should not allocate a */
/* new node */
u1_new_node_flag = 0;
}
ps_next_dpb = ps_next_dpb->ps_prev_short;
}
if(ps_next_dpb->ps_prev_short->ps_prev_short != NULL)
return ERROR_DBP_MANAGER_T;
if(u1_new_node_flag)
{
if(u1_num_gaps)
{
ret = ih264d_delete_gap_frm_sliding(ps_dpb_mgr,
ps_next_dpb->ps_prev_short->i4_frame_num,
&u1_del_node);
if(ret != OK)
return ret;
}
if(u1_del_node)
{
ps_dpb_mgr->u1_num_st_ref_bufs--;
ps_next_dpb->ps_prev_short->u1_used_as_ref = UNUSED_FOR_REF;
ps_next_dpb->ps_prev_short->s_top_field.u1_reference_info =
UNUSED_FOR_REF;
ps_next_dpb->ps_prev_short->s_bot_field.u1_reference_info =
UNUSED_FOR_REF;
ih264d_free_ref_pic_mv_bufs(ps_dpb_mgr->pv_codec_handle,
ps_next_dpb->ps_prev_short->u1_buf_id);
ps_next_dpb->ps_prev_short->ps_pic_buf = NULL;
ps_next_dpb->ps_prev_short = NULL;
}
}
}
else
{
if(ps_dpb_mgr->u1_num_st_ref_bufs)
{
ret = ih264d_delete_gap_frm_sliding(ps_dpb_mgr,
ps_next_dpb->i4_frame_num,
&u1_del_node);
if(ret != OK)
return ret;
if((ps_next_dpb->i4_frame_num != (WORD32)u4_cur_pic_num)
&& u1_del_node)
{
ps_dpb_mgr->u1_num_st_ref_bufs--;
ps_next_dpb->u1_used_as_ref = FALSE;
ps_next_dpb->s_top_field.u1_reference_info = UNUSED_FOR_REF;
ps_next_dpb->s_bot_field.u1_reference_info = UNUSED_FOR_REF;
ih264d_free_ref_pic_mv_bufs(ps_dpb_mgr->pv_codec_handle,
ps_next_dpb->u1_buf_id);
ps_next_dpb->ps_pic_buf = NULL;
ps_next_dpb = NULL;
}
}
else
{
ret = ih264d_delete_gap_frm_sliding(ps_dpb_mgr, INVALID_FRAME_NUM, &u1_del_node);
if(ret != OK)
return ret;
if(u1_del_node)
return ERROR_DBP_MANAGER_T;
}
}
}
return OK;
}
/*****************************************************************************/
/* */
/* Function Name : ih264d_delete_nonref_nondisplay_pics */
/* */
/* Description : */
/* */
/* */
/* Inputs : */
/* Globals : */
/* Processing : */
/* */
/* Outputs : */
/* Returns : */
/* */
/* Issues : */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 05 06 2007 Varun Draft */
/* */
/*****************************************************************************/
void ih264d_delete_nonref_nondisplay_pics(dpb_manager_t *ps_dpb_mgr)
{
WORD8 i;
WORD32 (*i4_poc_buf_id_map)[3] = ps_dpb_mgr->ai4_poc_buf_id_map;
/* remove all gaps marked as unused for ref */
for(i = 0; (i < MAX_FRAMES) && ps_dpb_mgr->i1_gaps_deleted; i++)
{
if(GAP_FRAME_NUM == i4_poc_buf_id_map[i][2])
{
ps_dpb_mgr->i1_gaps_deleted--;
ps_dpb_mgr->i1_poc_buf_id_entries--;
i4_poc_buf_id_map[i][0] = -1;
i4_poc_buf_id_map[i][1] = 0x7fffffff;
i4_poc_buf_id_map[i][2] = 0;
}
}
}
/*****************************************************************************/
/* */
/* Function Name : ih264d_insert_pic_in_display_list */
/* */
/* Description : */
/* */
/* */
/* Inputs : */
/* Globals : */
/* Processing : */
/* */
/* Outputs : */
/* Returns : */
/* */
/* Issues : */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 05 06 2007 Varun Draft */
/* */
/*****************************************************************************/
WORD32 ih264d_insert_pic_in_display_list(dpb_manager_t *ps_dpb_mgr,
UWORD8 u1_buf_id,
WORD32 i4_display_poc,
UWORD32 u4_frame_num)
{
WORD8 i;
WORD32 (*i4_poc_buf_id_map)[3] = ps_dpb_mgr->ai4_poc_buf_id_map;
for(i = 0; i < MAX_FRAMES; i++)
{
/* Find an empty slot */
if(i4_poc_buf_id_map[i][0] == -1)
{
if(GAP_FRAME_NUM == i4_poc_buf_id_map[i][2])
ps_dpb_mgr->i1_gaps_deleted--;
else
ps_dpb_mgr->i1_poc_buf_id_entries++;
i4_poc_buf_id_map[i][0] = u1_buf_id;
i4_poc_buf_id_map[i][1] = i4_display_poc;
i4_poc_buf_id_map[i][2] = u4_frame_num;
break;
}
}
if(MAX_FRAMES == i)
{
UWORD32 i4_error_code;
i4_error_code = ERROR_GAPS_IN_FRM_NUM;
return i4_error_code;
}
return OK;
}