1 /****************************************************************************** 2 * * 3 * Copyright (C) 2023 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 #pragma once 22 #ifndef PI 23 #define PI (3.141592653589795) 24 #endif 25 26 #define LS_TRANS_128 448 //((long_frame_len - FRAME_LEN_SHORT_128) / 2) 27 #define LS_TRANS_120 420 28 29 #define DIG_REV(i, m, j) \ 30 do { \ 31 unsigned _ = (i); \ 32 _ = ((_ & 0x33333333) << 2) | ((_ & ~0x33333333) >> 2); \ 33 _ = ((_ & 0x0F0F0F0F) << 4) | ((_ & ~0x0F0F0F0F) >> 4); \ 34 _ = ((_ & 0x00FF00FF) << 8) | ((_ & ~0x00FF00FF) >> 8); \ 35 _ = ((_ & 0x0000FFFF) << 16) | ((_ & ~0x0000FFFF) >> 16); \ 36 (j) = _ >> (m); \ 37 } while (0) 38 39 #define DIG_REV_NEW(i, m, j) \ 40 do { \ 41 unsigned _ = (i); \ 42 _ = ((_ & 0x33333333) << 2) | ((_ & ~0x33333333) >> 2); \ 43 _ = ((_ & 0x0F0F0F0F) << 4) | ((_ & ~0x0F0F0F0F) >> 4); \ 44 _ = ((_ & 0x00FF00FF) << 8) | ((_ & ~0x00FF00FF) >> 8); \ 45 (j) = _ >> (m); \ 46 } while (0) 47 48 typedef struct { 49 FLOAT32 p_fft_p2_y[2048]; 50 FLOAT32 p_fft_p3_data_3[800]; 51 FLOAT32 p_fft_p3_y[2048]; 52 } ixheaace_scratch_mem; 53 54 VOID ia_enhaacplus_enc_complex_fft(FLOAT32 *ptr_data, WORD32 len, 55 ixheaace_scratch_mem *pstr_scratch); 56 57 VOID ia_eaacp_enc_pre_twiddle_aac(FLOAT32 *ptr_x, FLOAT32 *ptr_data, WORD32 n, 58 const FLOAT32 *ptr_cos_array); 59 60 VOID ia_enhaacplus_enc_post_twiddle(FLOAT32 *ptr_out, FLOAT32 *ptr_x, 61 const FLOAT32 *ptr_cos_sin_tbl, WORD m); 62 63 VOID ia_aac_ld_enc_mdct_480(FLOAT32 *ptr_inp, FLOAT32 *ptr_scratch, WORD32 mdct_flag, 64 ixheaace_mdct_tables *pstr_mdct_tables); 65 66 VOID ia_enhaacplus_enc_complex_fft_p2(FLOAT32 *ptr_x, WORD32 nlength, 67 FLOAT32 *ptr_scratch_fft_p2_y); 68 69 VOID ixheaace_transform_real_lc_ld(FLOAT32 *ptr_mdct_delay_buffer, const FLOAT32 *ptr_time_signal, 70 WORD32 ch_increment, FLOAT32 *ptr_real_out, WORD32 block_type, 71 WORD32 frame_len, WORD8 *ptr_scratch); 72 73 VOID ia_enhaacplus_enc_transform_real_eld(FLOAT32 *ptr_mdct_delay_buffer, 74 const FLOAT32 *ptr_time_signal, WORD32 ch_increment, 75 FLOAT32 *ptr_real_out, WORD8 *ptr_shared_buffer5, 76 WORD32 frame_len); 77 78 VOID ia_enhaacplus_enc_transform_real(FLOAT32 *ptr_mdct_delay_buffer, 79 const FLOAT32 *ptr_time_signal, WORD32 ch_increment, 80 FLOAT32 *ptr_real_out, ixheaace_mdct_tables *pstr_mdct_tab, 81 FLOAT32 *ptr_shared_buffer1, WORD8 *ptr_shared_buffer5, 82 WORD32 long_frame_len);