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new audio format object

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Craig Hansen-Sturm 2014-08-29 14:36:11 -07:00
parent 29ed1b3fcd
commit 974c88442c
1 changed files with 84 additions and 0 deletions
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libraries/audio/src/AudioFormat.h Normal file
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//
// AudioFormat.h
// hifi
//
// Created by Craig Hansen-Sturm on 8/28/14.
// Copyright 2014 High Fidelity, Inc.
//
// Distributed under the Apache License, Version 2.0.
// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//
#ifndef hifi_AudioFormat_h
#define hifi_AudioFormat_h
#ifndef _FLOAT32_T
#define _FLOAT32_T
typedef float float32_t;
#endif
#ifndef _FLOAT64_T
#define _FLOAT64_T
typedef double float64_t;
#endif
//
// Audio format structure (uncompressed streams only)
//
struct AudioFormat {
struct Flags {
uint32_t _isFloat : 1;
uint32_t _isSigned : 1;
uint32_t _isInterleaved : 1;
uint32_t _isBigEndian : 1;
uint32_t _isPacked : 1;
uint32_t _reserved : 27;
} _flags;
uint32_t _bytesPerFrame;
uint32_t _channelsPerFrame;
uint32_t _bitsPerChannel;
float64_t _sampleRate;
AudioFormat() {
std::memset(this, 0, sizeof(*this));
}
~AudioFormat() { }
AudioFormat& operator=(const AudioFormat& fmt) {
std::memcpy(this, &fmt, sizeof(*this));
return *this;
}
bool operator==(const AudioFormat& fmt) {
return std::memcmp(this, &fmt, sizeof(*this)) == 0;
}
bool operator!=(const AudioFormat& fmt) {
return std::memcmp(this, &fmt, sizeof(*this)) != 0;
}
void setCanonicalFloat32(uint32_t channels) {
assert(channels > 0 && channels <= 2);
_sampleRate = SAMPLE_RATE;
_bitsPerChannel = sizeof(float32_t) * 8;
_channelsPerFrame = channels;
_bytesPerFrame = _channelsPerFrame * _bitsPerChannel / 8;
_flags._isFloat = true;
_flags._isInterleaved = _channelsPerFrame > 1;
}
void setCanonicalInt16(uint32_t channels) {
assert(channels > 0 && channels <= 2);
_sampleRate = SAMPLE_RATE;
_bitsPerChannel = sizeof(int16_t) * 8;
_channelsPerFrame = channels;
_bytesPerFrame = _channelsPerFrame * _bitsPerChannel / 8;
_flags._isSigned = true;
_flags._isInterleaved = _channelsPerFrame > 1;
}
};
#endif // hifi_AudioFormat_h