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36 lines
700 B
C
36 lines
700 B
C
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#ifndef _XT_GUI_WAVE_H_
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#define _XT_GUI_WAVE_H_
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#define WAVE_BUFFER_LEN 64
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#define WAVE_FRAME_LEN 8
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#define BUFFER_EMPTY -1111
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#define BUFFER_FULL -2222;
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class c_wave_buffer
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{
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public:
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c_wave_buffer();
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int write_wave_data(short data);
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int read_wave_data_by_frame(short &max, short &min, short len, unsigned int seq);
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void reset();
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void clear_data();
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short get_cnt();
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private:
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int read_data();
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short m_wave_buf[WAVE_BUFFER_LEN];
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short m_head;
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short m_tail;
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int m_min_old;
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int m_max_old;
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int m_min_older;
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int m_max_older;
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int m_last_data;
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short m_fb_min[WAVE_FRAME_LEN];
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short m_fb_mid[WAVE_FRAME_LEN];
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short m_fb_max[WAVE_FRAME_LEN];
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unsigned int m_refresh_sqence;
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};
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#endif
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