60 lines
1.9 KiB
C
60 lines
1.9 KiB
C
/******************************************************************************
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*
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* Copyright (C) 2023 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*****************************************************************************
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* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
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*/
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#ifndef IXHEAACD_MPS_RES_HUFFMAN_H
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#define IXHEAACD_MPS_RES_HUFFMAN_H
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#define _SWAP(a, b) \
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(b = (((WORD32)a[0] << 24) | ((WORD32)a[1] << 16) | ((WORD32)a[2] << 8) | ((WORD32)a[3])))
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extern UWORD32 ixheaacd_res_aac_showbits_32(UWORD8 *p_read_next);
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static PLATFORM_INLINE WORD32 ixheaacd_res_exts(UWORD32 a, WORD32 shift_left,
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WORD32 shift_right) {
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WORD32 x;
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x = (UWORD32)a << shift_left;
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x = (WORD32)x >> shift_right;
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return x;
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}
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static PLATFORM_INLINE UWORD32 ixheaacd_aac_read_2bytes(UWORD8 **p_read_next, WORD32 *r_bit_pos,
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WORD32 *readword) {
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UWORD8 *v = *p_read_next;
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WORD32 bits_consumed = *r_bit_pos;
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if ((bits_consumed - 16) >= 0) {
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*readword = (*readword << 8) | *v;
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v++;
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*readword = (*readword << 8) | *v;
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v++;
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bits_consumed -= 16;
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} else if ((bits_consumed - 8) >= 0) {
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*readword = (*readword << 8) | *v;
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v++;
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bits_consumed -= 8;
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}
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*r_bit_pos = bits_consumed;
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*p_read_next = v;
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return 1;
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}
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#endif /* IXHEAACD_MPS_RES_HUFFMAN_H */
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