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96 lines
2.5 KiB
C++
96 lines
2.5 KiB
C++
/* PROJECT: ReactOS sndrec32
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* LICENSE: GPL - See COPYING in the top level directory
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* FILE: base/applications/sndrec32/audio_format.hpp
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* PURPOSE: Audio format abstraction
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* PROGRAMMERS: Marco Pagliaricci (irc: rendar)
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*/
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#ifndef _AUDIOFORMAT__H_
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#define _AUDIOFORMAT__H_
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#include "audio_def.hpp"
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_AUDIO_NAMESPACE_START_
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class audio_format
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{
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protected:
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unsigned int samples_psec;
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unsigned short int bits_psample;
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unsigned short int chan;
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public:
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/* Ctors */
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audio_format(unsigned int samples_per_second,
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unsigned short int bits_per_sample,
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unsigned short int channels) : samples_psec(samples_per_second),
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bits_psample(bits_per_sample),
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chan(channels)
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{
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}
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/* Dtor */
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virtual ~audio_format(void)
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{
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}
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/* Operators */
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bool operator==(audio_format & eq) const
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{
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/* The same audio format is when samples per second,
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bit per sample, and channels mono/stereo are equal */
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return ((samples_psec == eq.samples_psec) &&
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(bits_psample == eq.bits_psample) &&
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(chan == eq.chan));
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}
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/* Public Functions */
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unsigned int sample_rate(void) const
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{
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return samples_psec;
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}
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unsigned short int bits(void) const
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{
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return bits_psample;
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}
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unsigned short int channels(void) const
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{
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return chan;
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}
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unsigned int byte_rate(void) const
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{
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return (samples_psec * chan * (bits_psample / 8));
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}
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unsigned int block_align(void) const
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{
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return (chan * (bits_psample / 8));
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}
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unsigned int samples_in_seconds(float seconds) const
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{
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return (unsigned int)(((float)samples_psec * (float) chan) * seconds);
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}
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unsigned int samples_in_bytes(unsigned int bytes) const
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{
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return (bytes / ((bits_psample / 8) * chan));
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}
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unsigned int bytes_in_samples(unsigned int samples) const
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{
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return (samples * ((bits_psample / 8) * chan));
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}
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};
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extern audio_format UNKNOWN_FORMAT;
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extern audio_format A44100_16BIT_STEREO;
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extern audio_format A44100_16BIT_MONO;
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_AUDIO_NAMESPACE_END_
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#endif /* _AUDIOFORMAT__H_ */
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