107 lines
3.2 KiB
C
107 lines
3.2 KiB
C
/****************************************************************************
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* drivers/audio/cxd56_src.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. 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, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __DRIVERS_AUDIO_CXD56_SRC_H
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#define __DRIVERS_AUDIO_CXD56_SRC_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <pthread.h>
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#include <mqueue.h>
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#include <nuttx/audio/audio.h>
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#include <nuttx/config.h>
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#ifdef CONFIG_AUDIO
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#ifndef CONFIG_CXD56_AUDIO_SRC_STACKSIZE
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# define CONFIG_CXD56_AUDIO_SRC_STACKSIZE 768
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#endif
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#ifndef CONFIG_CXD56_SRC_MSG_PRIO
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# define CONFIG_CXD56_SRC_MSG_PRIO 1
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#endif
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#ifndef SRC_SINC_BEST_QUALITY
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# define SRC_SINC_BEST_QUALITY 0
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#endif
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#ifndef SRC_SINC_MEDIUM_QUALITY
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# define SRC_SINC_MEDIUM_QUALITY 1
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#endif
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#ifndef SRC_SINC_FASTEST
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# define SRC_SINC_FASTEST 2
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#endif
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#ifndef SRC_ZERO_ORDER_HOLD
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# define SRC_ZERO_ORDER_HOLD 3
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#endif
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#ifndef SRC_LINEAR
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# define SRC_LINEAR 4
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#endif
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#define AUDIO_APB_SRC_FINAL (1 << 4) /* Last buffer in SRC processing */
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/****************************************************************************
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* Public Types
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****************************************************************************/
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typedef struct SRC_STATE_TAG SRC_STATE;
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typedef struct
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{
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const float *data_in;
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float *data_out;
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long input_frames;
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long output_frames;
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long input_frames_used;
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long output_frames_gen;
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int end_of_input;
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double src_ratio;
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} SRC_DATA;
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SRC_STATE *src_new (int converter_type, int channels, int *error);
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SRC_STATE *src_delete (SRC_STATE *state);
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int src_process (SRC_STATE *state, SRC_DATA *data);
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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int cxd56_src_init(FAR struct cxd56_dev_s *dev, FAR struct dq_queue_s *inq,
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FAR struct dq_queue_s *outq);
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int cxd56_src_deinit(void);
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int cxd56_src_enqueue(FAR struct ap_buffer_s *apb);
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int cxd56_src_stop(void);
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#endif /* CONFIG_AUDIO */
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#endif /* __DRIVERS_AUDIO_CXD56_SRC_H */
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