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/******************************************************************************
* *
* 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
*/
#include "ixheaac_type_def.h"
#include "ixheaace_wave_read.h"
WORD32 ia_enhaacplus_enc_get_wav_info(UWORD8 *inptr, wav_file_info *wav_info) {
UWORD8 *wav_hdr = inptr;
WORD8 data_start[4];
WORD16 num_ch;
UWORD16 f_samp;
if (wav_hdr[0] != 'R' && wav_hdr[1] != 'I' && wav_hdr[2] != 'F' && wav_hdr[3] != 'F') {
return 0;
}
if (wav_hdr[20] != 01 && wav_hdr[21] != 00) {
return 0;
}
num_ch = (WORD16)((UWORD8)wav_hdr[23] * 256 + (UWORD8)wav_hdr[22]);
f_samp = ((UWORD8)wav_hdr[27] * 256 * 256 * 256);
f_samp += ((UWORD8)wav_hdr[26] * 256 * 256);
f_samp += ((UWORD8)wav_hdr[25] * 256);
f_samp += ((UWORD8)wav_hdr[24]);
wav_info->num_channels = num_ch;
wav_info->sample_rate = f_samp;
data_start[0] = wav_hdr[36];
data_start[1] = wav_hdr[37];
data_start[2] = wav_hdr[38];
data_start[3] = wav_hdr[39];
if (!(data_start[0] == 'd' && data_start[1] == 'a' && data_start[2] == 't' &&
data_start[3] == 'a')) {
return 0;
}
return 1;
}
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