32 lines
1.3 KiB
C
32 lines
1.3 KiB
C
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// Copyright 2015-2019 Espressif Systems (Shanghai) PTE LTD
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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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// 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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#ifndef _ESP_AGC_H_
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#define _ESP_AGC_H_
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////all positive value is valid, negective is error
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typedef enum {
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ESP_AGC_SUCCESS = 0, ////success
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ESP_AGC_FAIL = -1, ////agc fail
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ESP_AGC_SAMPLE_RATE_ERROR = -2, ///sample rate can be only 8khz, 16khz, 32khz
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ESP_AGC_FRAME_SIZE_ERROR = -3, ////the input frame size should be only 10ms, so should together with sample-rate to get the frame size
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} ESP_AGE_ERR;
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void *esp_agc_open(int agc_mode, int sample_rate);
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void set_agc_config(void *agc_handle, int gain_dB, int limiter_enable, int target_level_dbfs);
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int esp_agc_process(void *agc_handle, short *in_pcm, short *out_pcm, int frame_size, int sample_rate);
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void esp_agc_clse(void *agc_handle);
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#endif // _ESP_AGC_H_
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