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/**********************************************************************
Audacity: A Digital Audio Editor
Types.h
Leland Lucius
Copyright (c) 2014, Audacity Team
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
**********************************************************************/
#ifndef __AUDACITY_TYPES_H__
#define __AUDACITY_TYPES_H__
#include <algorithm>
#include <functional>
#include <limits>
#include <type_traits>
#include <vector>
#include <wx/debug.h> // for wxASSERT
#include <wx/string.h> // type used in inline function and member variable
#include "Internat.h"
// ----------------------------------------------------------------------------
// TODO: I'd imagine this header may be replaced by other public headers. But,
// to try and minimize more changes to the base code, we can use this
// until proper public headers are created for the stuff in here.
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// A native 64-bit integer...used when referring to any number of samples
// ----------------------------------------------------------------------------
class sampleCount
{
public:
using type = long long;
static_assert(sizeof(type) == 8, "Wrong width of sampleCount");
sampleCount () : value { 0 } {}
// Allow implicit conversion from integral types
sampleCount ( type v ) : value { v } {}
sampleCount ( unsigned long long v ) : value ( v ) {}
sampleCount ( int v ) : value { v } {}
sampleCount ( unsigned v ) : value { v } {}
sampleCount ( long v ) : value { v } {}
// unsigned long is 64 bit on some platforms. Let it narrow.
sampleCount ( unsigned long v ) : value ( v ) {}
// Beware implicit conversions from floating point values!
// Otherwise the meaning of binary operators with sampleCount change
// their meaning when sampleCount is not an alias!
explicit sampleCount ( float f ) : value ( f ) {}
explicit sampleCount ( double d ) : value ( d ) {}
sampleCount ( const sampleCount& ) = default;
sampleCount &operator= ( const sampleCount& ) = default;
float as_float() const { return value; }
double as_double() const { return value; }
long long as_long_long() const { return value; }
size_t as_size_t() const {
wxASSERT(value >= 0);
wxASSERT(static_cast<std::make_unsigned<type>::type>(value) <= std::numeric_limits<size_t>::max());
return value;
}
sampleCount &operator += (sampleCount b) { value += b.value; return *this; }
sampleCount &operator -= (sampleCount b) { value -= b.value; return *this; }
sampleCount &operator *= (sampleCount b) { value *= b.value; return *this; }
sampleCount &operator /= (sampleCount b) { value /= b.value; return *this; }
sampleCount &operator %= (sampleCount b) { value %= b.value; return *this; }
sampleCount operator - () const { return -value; }
sampleCount &operator ++ () { ++value; return *this; }
sampleCount operator ++ (int)
{ sampleCount result{ *this }; ++value; return result; }
sampleCount &operator -- () { --value; return *this; }
sampleCount operator -- (int)
{ sampleCount result{ *this }; --value; return result; }
private:
type value;
};
inline bool operator == (sampleCount a, sampleCount b)
{
return a.as_long_long() == b.as_long_long();
}
inline bool operator != (sampleCount a, sampleCount b)
{
return !(a == b);
}
inline bool operator < (sampleCount a, sampleCount b)
{
return a.as_long_long() < b.as_long_long();
}
inline bool operator >= (sampleCount a, sampleCount b)
{
return !(a < b);
}
inline bool operator > (sampleCount a, sampleCount b)
{
return b < a;
}
inline bool operator <= (sampleCount a, sampleCount b)
{
return !(b < a);
}
inline sampleCount operator + (sampleCount a, sampleCount b)
{
return sampleCount{ a } += b;
}
inline sampleCount operator - (sampleCount a, sampleCount b)
{
return sampleCount{ a } -= b;
}
inline sampleCount operator * (sampleCount a, sampleCount b)
{
return sampleCount{ a } *= b;
}
inline sampleCount operator / (sampleCount a, sampleCount b)
{
return sampleCount{ a } /= b;
}
inline sampleCount operator % (sampleCount a, sampleCount b)
{
return sampleCount{ a } %= b;
}
// ----------------------------------------------------------------------------
// Function returning the minimum of a sampleCount and a size_t,
// hiding the casts
// ----------------------------------------------------------------------------
inline size_t limitSampleBufferSize( size_t bufferSize, sampleCount limit )
{
return
std::min( sampleCount( bufferSize ), std::max( sampleCount(0), limit ) )
.as_size_t();
}
// ----------------------------------------------------------------------------
// Supported sample formats
// ----------------------------------------------------------------------------
enum sampleFormat : unsigned
{
//! The increasing sequence of these enum values must correspond to the increasing data type width
//! These values persist in saved project files, so must not be changed in later program versions
int16Sample = 0x00020001,
int24Sample = 0x00040001,
floatSample = 0x0004000F,
//! Two synonyms for previous values that might change if more values were added
narrowestSampleFormat = int16Sample,
widestSampleFormat = floatSample,
};
// ----------------------------------------------------------------------------
// Provide the number of bytes a specific sample will take
// ----------------------------------------------------------------------------
#define SAMPLE_SIZE(SampleFormat) (SampleFormat >> 16)
// ----------------------------------------------------------------------------
// Generic pointer to sample data
// ----------------------------------------------------------------------------
typedef char *samplePtr;
typedef const char *constSamplePtr;
// ----------------------------------------------------------------------------
// The type for plugin IDs
// ----------------------------------------------------------------------------
typedef wxString PluginID;
// ----------------------------------------------------------------------------
// Supported channel assignments
// ----------------------------------------------------------------------------
typedef enum
{
// Use to mark end of list
ChannelNameEOL = -1,
// The default channel assignment
ChannelNameMono,
// From this point, the channels follow the 22.2 surround sound format
ChannelNameFrontLeft,
ChannelNameFrontRight,
ChannelNameFrontCenter,
ChannelNameLowFrequency1,
ChannelNameBackLeft,
ChannelNameBackRight,
ChannelNameFrontLeftCenter,
ChannelNameFrontRightCenter,
ChannelNameBackCenter,
ChannelNameLowFrequency2,
ChannelNameSideLeft,
ChannelNameSideRight,
ChannelNameTopFrontLeft,
ChannelNameTopFrontRight,
ChannelNameTopFrontCenter,
ChannelNameTopCenter,
ChannelNameTopBackLeft,
ChannelNameTopBackRight,
ChannelNameTopSideLeft,
ChannelNameTopSideRight,
ChannelNameTopBackCenter,
ChannelNameBottomFrontCenter,
ChannelNameBottomFrontLeft,
ChannelNameBottomFrontRight,
} ChannelName, *ChannelNames;
#endif // __AUDACITY_TYPES_H__