1 /****************************************************************************** 2 * 3 * Copyright (C) 2015 The Android Open Source Project 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ***************************************************************************** 18 * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore 19 */ 20 21 /*****************************************************************************/ 22 /* */ 23 /* File Name : irc_cbr_buffer_control.h */ 24 /* */ 25 /* Description : This file contains all the necessary declarations */ 26 /* for cbr_buffer_control functions */ 27 /* */ 28 /* */ 29 /* List of Functions : <List the functions defined in this file> */ 30 /* */ 31 /* Issues / Problems : None */ 32 /* */ 33 /* Revision History : */ 34 /* */ 35 /* DD MM YYYY Author(s) Changes (Describe the changes made) */ 36 /* 06 05 2008 Ittiam Draft */ 37 /* */ 38 /*****************************************************************************/ 39 40 #ifndef CBR_BUFFER_CONTROL_H 41 #define CBR_BUFFER_CONTROL_H 42 43 /* Macro for clipping a number between to extremes */ 44 #define CLIP(Number,Max,Min) if((Number) > (Max)) (Number) = (Max); \ 45 else if((Number) < (Min)) (Number) = (Min); 46 /*****************************************************************************/ 47 /* Structure */ 48 /*****************************************************************************/ 49 typedef struct cbr_buffer_t *cbr_buffer_handle; 50 51 WORD32 irc_cbr_buffer_num_fill_use_free_memtab(cbr_buffer_handle *pps_cbr_buffer, 52 itt_memtab_t *ps_memtab, 53 ITT_FUNC_TYPE_E e_func_type); 54 55 /* Initialize the cbr Buffer*/ 56 void irc_init_cbr_buffer(cbr_buffer_handle ps_cbr_buffer, 57 WORD32 i4_buffer_delay, 58 WORD32 i4_tgt_frm_rate, 59 WORD32 *i4_bit_rate, 60 UWORD32 *u4_num_pics_in_delay_prd, 61 UWORD32 u4_vbv_buf_size); 62 63 /* Check for tgt bits with in CBR buffer*/ 64 WORD32 irc_cbr_buffer_constraint_check(cbr_buffer_handle ps_cbr_buffer, 65 WORD32 i4_tgt_bits, 66 picture_type_e e_pic_type); 67 68 /* Get the buffer status with the current consumed bits*/ 69 vbv_buf_status_e irc_get_cbr_buffer_status(cbr_buffer_handle ps_cbr_buffer, 70 WORD32 i4_tot_consumed_bits, 71 WORD32 *pi4_num_bits_to_prevent_overflow, 72 picture_type_e e_pic_type); 73 74 /* Update the CBR buffer at the end of the VOP*/ 75 void irc_update_cbr_buffer(cbr_buffer_handle ps_cbr_buffer, 76 WORD32 i4_tot_consumed_bits, 77 picture_type_e e_pic_type); 78 79 /*Get the bits needed to stuff in case of Underflow*/ 80 WORD32 irc_get_cbr_bits_to_stuff(cbr_buffer_handle ps_cbr_buffer, 81 WORD32 i4_tot_consumed_bits, 82 picture_type_e e_pic_type); 83 84 WORD32 irc_get_cbr_buffer_delay(cbr_buffer_handle ps_cbr_buffer); 85 86 WORD32 irc_get_cbr_buffer_size(cbr_buffer_handle ps_cbr_buffer); 87 88 WORD32 irc_vbr_stream_buffer_constraint_check(cbr_buffer_handle ps_cbr_buffer, 89 WORD32 i4_tgt_bits, 90 picture_type_e e_pic_type); 91 92 void irc_change_cbr_vbv_bit_rate(cbr_buffer_handle ps_cbr_buffer, 93 WORD32 *i4_bit_rate); 94 95 void irc_change_cbr_vbv_tgt_frame_rate(cbr_buffer_handle ps_cbr_buffer, 96 WORD32 i4_tgt_frm_rate); 97 98 void irc_change_cbr_vbv_num_pics_in_delay_period(cbr_buffer_handle ps_cbr_buffer, 99 UWORD32 *u4_num_pics_in_delay_prd); 100 101 void irc_change_cbr_buffer_delay(cbr_buffer_handle ps_cbr_buffer, 102 WORD32 i4_buffer_delay); 103 #endif /* CBR_BUFFER_CONTROL_H */ 104 105
