/****************************************************************************** * * * Copyright (C) 2023 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 */ #pragma once // FLOAT values #define IXHEAACE_COS_PI_BY_4 (0.70709228515625f) // 0.7071067812f #define IXHEAACE_COS_PI_BY_8 (0.92388916015625f) // 0.923879532511287f #define IXHEAACE_SIN_PI_BY_8 (0.3826904296875f) // 0.382683432365090f #define IXHEAACE_COS_PI_BY_16 (0.98077392578125f) // 0.980785280403230f #define IXHEAACE_SIN_PI_BY_16 (0.195098876953125f) // 0.195090322016128f #define IXHEAACE_COS_3_PI_BY_16 (0.83148193359375f) // 0.831469612302545f #define IXHEAACE_SIN_3_PI_BY_16 (0.555572509765625f) // 0.555570233019602f #define IXHEAACE_INV_SQRT2 (7.071067811865475e-1f) #define IXHEAACE_COS_PI_DIV8 (0.923879532511287f) #define IXHEAACE_COS_3PI_DIV8 (3.826834323650898e-1f) #define IXHEAACE_SQRT2PLUS1 (2.414213562373095f) #define IXHEAACE_SQRT2MINUS1 (4.142135623730952e-1f) #define INV_SQRT_2_FLOAT 0x3F3504F3 // 1/sqrt(2) in float #define Q_POWER2_TABLE 30 #define DIV_FAC_24_BIT_PCM (256.0f) #define DIV_FAC_32_BIT_PCM (65536.0f) #define AUDIO_PROFILE_AAC_LC_L5 (0x2B) #define AUDIO_PROFILE_HEAAC_L5 (0x2F) #define AUDIO_PROFILE_HEAAC_V2_L5 (0x33) #define AUDIO_PROFILE_AAC_LD_L4 (0x19) #define AUDIO_PROFILE_AAC_ELD_L1 (0x4C) #define AUDIO_PROFILE_AAC_ELD_L2 (0x4D) #define AUDIO_PROFILE_AAC_ELD_L4 (0x4F) #define AUDIO_PROFILE_USAC_L2 (0x45) #define AUDIO_PROFILE_NOT_SPECIFIED (0xFE) #define CLIP_SAVE_LO_LONG (0.2f) #define CLIP_SAVE_HI_LONG (0.95f) #define MIN_BITS_SAVE_LONG (-0.05f) #define MAX_BITS_SAVE_LONG (0.3f) #define CLIP_SPEND_LO_LONG (0.2f) #define CLIP_SPEND_HI_LONG (0.95f) #define MIN_BITS_SPEND_LONG (-0.10f) #define MAX_BITS_SPEND_LONG (0.4f) #define CLIP_SAVE_LO_SHORT (0.2f) #define CLIP_SAVE_HI_SHORT (0.75f) #define MIN_BITS_SAVE_SHORT (0.0f) #define MAX_BITS_SAVE_SHORT (0.2f) #define CLIP_SPEND_LO_SHORT (0.2f) #define CLIP_SPEND_HI_SHORT (0.75f) #define MIN_BITS_SPEND_SHORT (-0.05f) #define MAX_BITS_SPEND_SHORT (0.5f) typedef struct { FLOAT32 re; FLOAT32 im; } complex; typedef struct { UWORD8 *data; /* data bits */ WORD32 num_bit; /* number of bits in buffer */ WORD32 size; /* buffer size in bytes */ WORD32 current_bit; /* current bit position in bit stream */ } ixheaace_bitstream_params; /* bits in byte (char) */ #define BYTE_NUMBIT 8 #define EIGHT_BYTE_SIZE (8) /* here we distinguish between stereo and the mono only encoder */ #define IXHEAACE_MAX_CH_IN_BS_ELE (2) #define MAXIMUM_BS_ELE \ 8 /* 1 2 3 4 5 6 - 8.1 channel + 2 cc channels*/ #define FRAME_LEN_1024 1024 #define FRAME_LEN_512 512 #define FRAME_LEN_480 480 #define FRAME_LEN_960 960 #define AACENC_TRANS_FAC 8 /* encoder WORD16 long ratio */ #define AACENC_PCM_LEVEL 1.0 /* encoder pcm 0db refernence */ #define MAX_INPUT_CHAN (IXHEAACE_MAX_CH_IN_BS_ELE) #define MAX_FRAME_LEN (1024) /* channel masking*/ #define CH_MASK_CENTER_FRONT (0x4) #define CH_MASK_LEFT_RIGHT_FRONT (0x3) #define CH_MASK_REAR_CENTER (0x100) #define CH_MASK_LEFT_RIGHT_BACK (0X30) #define CH_MASK_LFE (0x08) // Change to accommodate 4:1 resampler - input = 4096 samples per channel #define MAX_INPUT_SAMPLES (MAX_FRAME_LEN * MAX_INPUT_CHAN * 4) #define NUM_CHANS_MONO (1) #define NUM_CHANS_STEREO (2) #define MAX_NUM_CORE_CODER_CHANNELS (6) #define MIN_NUM_CORE_CODER_CHANNELS (1) /*-------------------------- defines --------------------------------------*/ #define BUFFERSIZE 1024 /* anc data */ #define MAX_GAIN_INDEX (128)