/****************************************************************************** * * 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 */ #ifdef __ANDROID__ #include #endif #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; u1_mark_bot_field_long_term = 1; u1_mark_top_field_long_term = 1; } 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) { /*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 { /* Can occur only for field bottom pictures */ ps_dpb_info[i].s_bot_field.u1_reference_info = IS_SHORT_TERM; 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, count = 0; 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) && (count < ps_cur_slice->u1_num_ref_idx_lx_active[uc_lx])) { ui_nextUev = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); if(ui_remapIdc != 2) { if(ui_nextUev > ui_max_frame_num) return ERROR_DBP_MANAGER_T; ui_nextUev = ui_nextUev + 1; if(ui_remapIdc == 0) { // diffPicNum is -ve i_temp = (WORD32)u2_pred_frame_num - (WORD32)ui_nextUev; if(i_temp < 0) i_temp += ui_max_frame_num; } else { // diffPicNum is +ve i_temp = (WORD32)u2_pred_frame_num + (WORD32)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; if(ui_nextUev > (MAX_REF_BUFS + 1)) return ERROR_DBP_MANAGER_T; 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 */ count++; } //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->s_dpb_cmds_scratch); 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) { #ifdef __ANDROID__ ALOGE("b/25818142"); android_errorWriteLog(0x534e4554, "25818142"); #endif 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 = ((WORD32)i4_cur_pic_num - ((WORD32)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 = (WORD32)i4_cur_pic_num - ((WORD32)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; if(ps_dpb_mgr->u1_num_st_ref_bufs > 0) { 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; } else { return ERROR_DBP_MANAGER_T; } 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; }