1*c83a76b0SSuyog Pawar /****************************************************************************** 2*c83a76b0SSuyog Pawar * 3*c83a76b0SSuyog Pawar * Copyright (C) 2012 Ittiam Systems Pvt Ltd, Bangalore 4*c83a76b0SSuyog Pawar * 5*c83a76b0SSuyog Pawar * Licensed under the Apache License, Version 2.0 (the "License"); 6*c83a76b0SSuyog Pawar * you may not use this file except in compliance with the License. 7*c83a76b0SSuyog Pawar * You may obtain a copy of the License at: 8*c83a76b0SSuyog Pawar * 9*c83a76b0SSuyog Pawar * http://www.apache.org/licenses/LICENSE-2.0 10*c83a76b0SSuyog Pawar * 11*c83a76b0SSuyog Pawar * Unless required by applicable law or agreed to in writing, software 12*c83a76b0SSuyog Pawar * distributed under the License is distributed on an "AS IS" BASIS, 13*c83a76b0SSuyog Pawar * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14*c83a76b0SSuyog Pawar * See the License for the specific language governing permissions and 15*c83a76b0SSuyog Pawar * limitations under the License. 16*c83a76b0SSuyog Pawar * 17*c83a76b0SSuyog Pawar ******************************************************************************/ 18*c83a76b0SSuyog Pawar /** 19*c83a76b0SSuyog Pawar ******************************************************************************* 20*c83a76b0SSuyog Pawar * @file 21*c83a76b0SSuyog Pawar * ihevcd_nal.h 22*c83a76b0SSuyog Pawar * 23*c83a76b0SSuyog Pawar * @brief 24*c83a76b0SSuyog Pawar * Header for NAL related function 25*c83a76b0SSuyog Pawar * 26*c83a76b0SSuyog Pawar * @author 27*c83a76b0SSuyog Pawar * Harish 28*c83a76b0SSuyog Pawar * 29*c83a76b0SSuyog Pawar * @par List of Functions: 30*c83a76b0SSuyog Pawar * 31*c83a76b0SSuyog Pawar * @remarks 32*c83a76b0SSuyog Pawar * None 33*c83a76b0SSuyog Pawar * 34*c83a76b0SSuyog Pawar ******************************************************************************* 35*c83a76b0SSuyog Pawar */ 36*c83a76b0SSuyog Pawar 37*c83a76b0SSuyog Pawar #ifndef _IHEVCD_NAL_H_ 38*c83a76b0SSuyog Pawar #define _IHEVCD_NAL_H_ 39*c83a76b0SSuyog Pawar /** 40*c83a76b0SSuyog Pawar * Minimum size of start code including NAL type 41*c83a76b0SSuyog Pawar */ 42*c83a76b0SSuyog Pawar 43*c83a76b0SSuyog Pawar #define MIN_START_CODE_LEN 4 44*c83a76b0SSuyog Pawar /** 45*c83a76b0SSuyog Pawar * Start code prefix byte - 1 46*c83a76b0SSuyog Pawar */ 47*c83a76b0SSuyog Pawar #define START_CODE_PREFIX_BYTE 1 48*c83a76b0SSuyog Pawar 49*c83a76b0SSuyog Pawar /** 50*c83a76b0SSuyog Pawar * Emulation prevention byte - 3 51*c83a76b0SSuyog Pawar */ 52*c83a76b0SSuyog Pawar 53*c83a76b0SSuyog Pawar #define EMULATION_PREVENT_BYTE 3 54*c83a76b0SSuyog Pawar /** 55*c83a76b0SSuyog Pawar * Minimum number of zeros before start code 56*c83a76b0SSuyog Pawar */ 57*c83a76b0SSuyog Pawar #define NUM_ZEROS_BEFORE_START_CODE 2 58*c83a76b0SSuyog Pawar 59*c83a76b0SSuyog Pawar 60*c83a76b0SSuyog Pawar WORD32 ihevcd_nal_search_start_code(UWORD8 *pu1_buf, WORD32 bytes_remaining); 61*c83a76b0SSuyog Pawar 62*c83a76b0SSuyog Pawar IHEVCD_ERROR_T ihevcd_nal_remv_emuln_bytes(UWORD8 *pu1_src, 63*c83a76b0SSuyog Pawar UWORD8 *pu1_dst, 64*c83a76b0SSuyog Pawar WORD32 bytes_remaining, 65*c83a76b0SSuyog Pawar WORD32 *pi4_nal_len, 66*c83a76b0SSuyog Pawar WORD32 *pi4_dst_len); 67*c83a76b0SSuyog Pawar 68*c83a76b0SSuyog Pawar IHEVCD_ERROR_T ihevcd_nal_unit(codec_t *ps_codec); 69*c83a76b0SSuyog Pawar #endif /* _IHEVCD_NAL_H_ */ 70