90 lines
2.7 KiB
C++
90 lines
2.7 KiB
C++
/*
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* Copyright (C) 2022 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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#define LOG_TAG "hfp_msbc_decoder"
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#include "hfp_msbc_decoder.h"
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#include <base/logging.h>
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#include <cstring>
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#include "embdrv/sbc/decoder/include/oi_codec_sbc.h"
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#include "embdrv/sbc/decoder/include/oi_status.h"
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#include "osi/include/log.h"
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#define HFP_MSBC_PKT_LEN 60
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#define HFP_MSBC_PCM_BYTES 240
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typedef struct {
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OI_CODEC_SBC_DECODER_CONTEXT decoder_context;
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uint32_t context_data[CODEC_DATA_WORDS(2, SBC_CODEC_FAST_FILTER_BUFFERS)];
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} tHFP_MSBC_DECODER;
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static tHFP_MSBC_DECODER hfp_msbc_decoder;
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bool hfp_msbc_decoder_init() {
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OI_STATUS status = OI_CODEC_SBC_DecoderReset(
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&hfp_msbc_decoder.decoder_context, hfp_msbc_decoder.context_data,
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sizeof(hfp_msbc_decoder.context_data), 1, 1, false);
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if (!OI_SUCCESS(status)) {
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LOG_ERROR("%s: OI_CODEC_SBC_DecoderReset failed with error code %d",
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__func__, status);
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return false;
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}
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status = OI_CODEC_SBC_DecoderConfigureMSbc(&hfp_msbc_decoder.decoder_context);
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if (!OI_SUCCESS(status)) {
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LOG_ERROR("%s: OI_CODEC_SBC_DecoderConfigureMSbc failed with error code %d",
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__func__, status);
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return false;
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}
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return true;
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}
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void hfp_msbc_decoder_cleanup(void) {
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memset(&hfp_msbc_decoder, 0, sizeof(hfp_msbc_decoder));
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}
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// Get the HFP MSBC encoded maximum frame size
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bool hfp_msbc_decoder_decode_packet(const uint8_t* i_buf, int16_t* o_buf,
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size_t out_len) {
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if (out_len < HFP_MSBC_PCM_BYTES) {
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LOG_ERROR(
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"Output buffer's size %lu is less than one complete mSBC frame %d",
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(unsigned long)out_len, HFP_MSBC_PCM_BYTES);
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return false;
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}
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const OI_BYTE* oi_data;
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uint32_t oi_size, out_avail;
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oi_data = i_buf;
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oi_size = HFP_MSBC_PKT_LEN;
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out_avail = out_len;
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OI_STATUS status = OI_CODEC_SBC_DecodeFrame(
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&hfp_msbc_decoder.decoder_context, &oi_data, &oi_size, o_buf, &out_avail);
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if (!OI_SUCCESS(status) || out_avail != HFP_MSBC_PCM_BYTES || oi_size != 0) {
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LOG_ERROR("Decoding failure: %d, %lu, %lu", status,
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(unsigned long)out_avail, (unsigned long)oi_size);
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return false;
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}
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return true;
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}
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