2010-09-25 15:46:12 +00:00
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/* Simple resampler based on bsnes's ruby audio library */
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#ifndef __RESAMPLER_H
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#define __RESAMPLER_H
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#include "ring_buffer.h"
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class Resampler : public ring_buffer
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{
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public:
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2010-09-25 16:46:06 +00:00
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virtual void clear (void) = 0;
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virtual void time_ratio (double) = 0;
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virtual void read (short *, int) = 0;
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virtual int avail (void) = 0;
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2016-09-27 20:25:37 +00:00
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2010-09-25 15:46:12 +00:00
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Resampler (int num_samples) : ring_buffer (num_samples << 1)
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{
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}
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~Resampler ()
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{
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}
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2010-09-25 16:46:06 +00:00
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inline bool
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2010-09-25 15:46:12 +00:00
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push (short *src, int num_samples)
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{
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if (max_write () < num_samples)
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return false;
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2010-09-25 16:46:06 +00:00
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!num_samples || ring_buffer::push ((unsigned char *) src, num_samples << 1);
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2010-09-25 15:46:12 +00:00
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return true;
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}
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2010-09-25 16:46:06 +00:00
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inline int
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2016-09-27 20:25:37 +00:00
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space_empty (void) const
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2010-09-25 16:46:06 +00:00
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{
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return buffer_size - size;
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}
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2016-09-27 20:25:37 +00:00
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2010-09-25 16:46:06 +00:00
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inline int
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2016-09-27 20:25:37 +00:00
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space_filled (void) const
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2010-09-25 16:46:06 +00:00
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{
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return size;
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}
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2016-09-27 20:25:37 +00:00
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2010-09-25 16:46:06 +00:00
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inline int
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2016-09-27 20:25:37 +00:00
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max_write (void) const
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2010-09-25 15:46:12 +00:00
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{
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return space_empty () >> 1;
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}
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2010-09-25 16:46:06 +00:00
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inline void
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2010-09-25 15:46:12 +00:00
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resize (int num_samples)
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{
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ring_buffer::resize (num_samples << 1);
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}
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};
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#endif /* __RESAMPLER_H */
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