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include_lib/media/audio_gain_process.h

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+#ifndef __AUDIO_GAIN_PORCESS__H
+#define __AUDIO_GAIN_PORCESS__H
+
+#include "media/audio_stream.h"
+
+#ifndef RUN_NORMAL
+#define RUN_NORMAL  0
+#endif
+
+#ifndef RUN_BYPASS
+#define RUN_BYPASS  1
+#endif
+
+struct aud_gain_parm {
+    float gain;//增加多少dB
+    u8 channel;//通道数
+    u8 indata_inc;//channel ==1 ?1:2;
+    u8 outdata_inc;//channel ==1 ?1:2;
+    u8 bit_wide;//0:16bit  1：32bit
+    u16 gain_name;
+};
+struct aud_gain_parm_update {
+    float gain;//增加多少dB powf(10, 界面值gain / 20.0f)
+};
+struct aud_gain_process {
+    struct audio_stream_entry entry;	// 音频流入口
+    struct list_head hentry;                         //
+    struct aud_gain_parm parm;
+    u8 status;                           //内部运行状态机
+    u8 update;                           //设置参数更新标志
+};
+
+
+struct aud_gain_process *audio_gain_process_open(struct aud_gain_parm *parm);
+void audio_gain_process_run(struct aud_gain_process *hdl, s16 *data, int len);
+void audio_gain_process_close(struct aud_gain_process *hdl);
+void audio_gain_process_update(u16 gain_name, struct aud_gain_parm_update *parm);
+void audio_gain_process_bypass(u16 gain_name, u8 bypass);
+struct aud_gain_process *get_cur_gain_hdl_by_name(u32 gain_name);
+
+/*
+ * *in:输入数据地址
+ * *out:输出数据地址
+ * gain:dB值(powf(10, 界面值gain / 20.0f))
+ * channel:输入数据通道数
+ * Indatainc:同个声道相邻两点的差值  channel ==1 ?1:2
+ * OutdataInc:同个声道相邻两点的差值  channel ==1 ?1:2
+ * per_channel_npoint:一个声道的点数
+ * */
+extern void GainProcess_16Bit(short *in, short *out, float gain, int channel, int IndataInc, int OutdataInc, int per_channel_npoint); //16位宽
+/*
+ * *in:输入数据地址
+ * *out:输出数据地址
+ * gain:dB值powf(10, 界面值gain / 20.0f)
+ * channel:输入数据通道数
+ * Indatainc:同个声道相邻两点的差值  channel ==1 ?1:2
+ * OutdataInc:同个声道相邻两点的差值  channel ==1 ?1:2
+ * per_channel_npoint:一个声道的点数
+ * */
+extern void GainProcess_32Bit(int *in, int *out, float gain, int channel, int IndataInc, int OutdataInc, int per_channel_npoint); //32位宽
+
+
+#endif