104 lines
3.0 KiB
C
104 lines
3.0 KiB
C
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#ifndef _AUDIO_ENCODER_H
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#define _AUDIO_ENCODER_H
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#include <stdint.h>
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#include "co_list.h"
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#include "codec.h"
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#include "resample.h"
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#include "audio_common.h"
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typedef struct {
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struct co_list_hdr hdr;
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uint16_t length;
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uint8_t data[];
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} audio_encoder_frame_t;
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typedef struct {
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audio_type_t type;
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uint8_t channels;
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uint32_t sample_rate;
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void *encoder;
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void *resampler;
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uint8_t frame_count;
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uint16_t frame_max_length;
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struct co_list frame_list;
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audio_encoder_frame_t *frame_tmp;
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} audio_encoder_t;
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/************************************************************************************
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* @fn audio_encoder_init
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*
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* @brief Init audio encoder module.
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*
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* @param type: audio encoder type.
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* channels: mono or stereo.
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* sample_rate: input PCM sample rate.
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* frame_max_length:
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* param: decoder parameter.
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*
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* @return audio encoder handler, NULL will be returned when executation is failed.
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*/
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audio_encoder_t *audio_encoder_init(audio_type_t type, uint8_t channels, uint32_t sample_rate, uint16_t frame_max_length, void *param);
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/************************************************************************************
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* @fn audio_encoder_destroy
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*
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* @brief destroy created audio encoder module.
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*
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* @param encoder: encoder handler.
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*/
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void audio_encoder_destroy(audio_encoder_t *encoder);
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/************************************************************************************
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* @fn audio_encoder_encode
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*
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* @brief encode input PCM data.
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*
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* @param encoder: encoder handler.
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* buffer: PCM buffer.
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* length: size of input PCM data, unit is bytes.
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* channels: mono or stereo of input PCM data
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* sample_rate: sample rate of input PCM data.
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*
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* @return encoder result, @ref audio_ret_t.
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*/
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int audio_encoder_encode(audio_encoder_t *encoder, const uint8_t *buffer, uint32_t length, uint8_t channels, uint32_t sample_rate);
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/************************************************************************************
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* @fn audio_encoder_get_frame_count
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*
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* @brief Get the number of frames are stored in encoder module.
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*
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* @param encoder: encoder handler.
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*
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* @return the number of frames are stored in encoder module.
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*/
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int audio_encoder_get_frame_count(audio_encoder_t *encoder);
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/************************************************************************************
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* @fn audio_encoder_frame_pop
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*
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* @brief Get the head of frames stored in encoder module.
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*
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* @param encoder: encoder handler.
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*
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* @return the head of frames stored in encoder module.
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*/
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audio_encoder_frame_t *audio_encoder_frame_pop(audio_encoder_t *encoder);
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/************************************************************************************
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* @fn audio_encoder_frame_release
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*
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* @brief Release encoded frame.
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*
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* @param frame: frame to be released.
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*/
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void audio_encoder_frame_release(audio_encoder_frame_t *frame);
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#endif //_AUDIO_ENCODER_H
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