162 lines
4.9 KiB
C
162 lines
4.9 KiB
C
#ifndef AUDIO_MIXER_H
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#define AUDIO_MIXER_H
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#include "generic/typedef.h"
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#include "generic/list.h"
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#define MIXER_EXT_MAX_NUM 4 // 扩展输出最大通道
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#define PCM_0dB_VALUE 16384
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enum {
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MIXER_EVENT_CH_OPEN,
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MIXER_EVENT_CH_CLOSE,
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MIXER_EVENT_CH_RESET,
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};
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#define BIT16_MODE 0
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#define BIT24_MODE BIT(0)
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#define BIT32_MODE BIT(1)
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struct audio_mixer;
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struct audio_mix_handler {
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int (*mix_probe)(struct audio_mixer *);
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int (*mix_output)(struct audio_mixer *, s16 *, u16);
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#if MIXER_EXT_MAX_NUM
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/* 扩展输出回调接口
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* 最后一个参数代表当前输出的通道序号，0到ext_output_num-1;
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* 扩展输出不检测返回值，每次输出的长度与mix_output的返回值相同;
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*/
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int (*mix_output_ext)(struct audio_mixer *, s16 *, u16, u8);
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#endif
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int (*mix_post)(struct audio_mixer *);
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};
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struct audio_mixer {
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struct list_head head;
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s16 *output;
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u16 points;
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u16 remain_points;
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u32 sample_position : 20;
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#if MIXER_EXT_MAX_NUM
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int ext_output_addr[MIXER_EXT_MAX_NUM]; // 扩展输出buf地址，每个buf的长度与point相同
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u8 ext_output_num; // 扩展输出通道总数
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#endif
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const struct audio_mix_handler *mix_handler;
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void (*evt_handler)(struct audio_mixer *, int);
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volatile u8 active;
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volatile u8 bit_mode_en;
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volatile u8 point_len;
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};
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struct audio_pcm_edit {
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u8 hide : 1;
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u8 highlight : 1;
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u8 state;
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u8 ch_num;
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u8 fade_chs;
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s16 fade_step;
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s16 fade_volume;
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s16 volume;
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};
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struct audio_mixer_ch {
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u8 start;
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u8 pause;
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u8 open;
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u32 no_wait : 1; // 不等待有数
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u32 lose : 1; // 丢数标记
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u32 need_resume : 1;
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u8 start_by_position;
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u16 offset;
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u32 sample_rate;
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u16 lose_time; // 超过该时间还没有数据，则以为可以丢数。no_wait置1有效
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unsigned long lose_limit_time; // 丢数超时中间运算变量
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struct list_head entry;
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struct audio_mixer *mixer;
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#if MIXER_EXT_MAX_NUM
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u32 ext_out_mask; // 标记该通道输出的扩展通道，如输出到第0和第2个，ext_flag |= BTI(0)|BIT(2)
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u8 main_out_dis; // 不输出到主通道
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#endif
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u32 slience_samples;
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u32 mix_timeout;
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u32 starting_position : 20;
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void *priv;
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void (*event_handler)(void *priv, int event);
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void *lose_priv;
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void (*lose_callback)(void *lose_priv, int lose_len);
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void *resume_data;
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void (*resume_callback)(void *);
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struct audio_pcm_edit *editor;
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};
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int audio_mixer_open(struct audio_mixer *mixer);
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void audio_mixer_set_handler(struct audio_mixer *, const struct audio_mix_handler *);
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void audio_mixer_set_event_handler(struct audio_mixer *mixer,
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void (*handler)(struct audio_mixer *, int));
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void audio_mixer_set_output_buf(struct audio_mixer *mixer, s16 *buf, u16 len);
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int audio_mixer_get_sample_rate(struct audio_mixer *mixer);
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int audio_mixer_get_ch_num(struct audio_mixer *mixer);
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int audio_mixer_ch_open(struct audio_mixer_ch *ch, struct audio_mixer *mixer);
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void audio_mixer_ch_set_sample_rate(struct audio_mixer_ch *ch, u32 sample_rate);
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int audio_mixer_reset(struct audio_mixer_ch *ch, struct audio_mixer *mixer);
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int audio_mixer_ch_reset(struct audio_mixer_ch *ch);
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int audio_mixer_ch_write(struct audio_mixer_ch *ch, s16 *data, int len);
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int audio_mixer_ch_close(struct audio_mixer_ch *ch);
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void audio_mixer_ch_pause(struct audio_mixer_ch *ch, u8 pause);
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int audio_mixer_ch_data_len(struct audio_mixer_ch *ch);
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int audio_mixer_ch_add_slience_samples(struct audio_mixer_ch *ch, int samples);
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void audio_mixer_ch_set_resume_handler(struct audio_mixer_ch *ch, void *priv, void (*resume)(void *));
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int audio_mixer_get_active_ch_num(struct audio_mixer *mixer);
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void audio_mixer_ch_set_event_handler(struct audio_mixer_ch *ch, void *priv, void (*handler)(void *, int));
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// 设置通道没数据时不等待（超时直接丢数）
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void audio_mixer_ch_set_no_wait(struct audio_mixer_ch *ch, void *lose_priv, void (*lose_cb)(void *, int), u8 no_wait, u16 time_ms);
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#if MIXER_EXT_MAX_NUM
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void audio_mixer_set_ext_output_buf(struct audio_mixer *mixer, int *buf_addr_lst, u8 ext_num);
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u32 audio_mixer_ch_get_ext_out_mask(struct audio_mixer_ch *ch);
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void audio_mixer_ch_set_ext_out_mask(struct audio_mixer_ch *ch, u32 mask);
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void audio_mixer_ch_main_out_disable(struct audio_mixer_ch *ch, u8 disable);
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#endif /* MIXER_EXT_MAX_NUM */
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int audio_mixer_get_output_buf_len(struct audio_mixer *mixer);
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int audio_mixer_ch_set_starting_position(struct audio_mixer_ch *ch, u32 postion, int timeout);
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void audio_mixer_position_correct(struct audio_mixer *ch, int diff);
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u32 audio_mixer_get_input_position(struct audio_mixer *mixer);
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int audio_mixer_get_start_ch_num(struct audio_mixer *mixer);
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void audio_mixer_set_mode(struct audio_mixer *mixer, u8 point_len, u8 bit_mode_en);
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int audio_mixer_ch_sound_highlight(struct audio_mixer_ch *ch, int hide_volume, int fade_frames, u8 data_channels);
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#endif
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