mirror of
https://github.com/cookiengineer/audacity
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78be459fa1
... A non-narrowing conversion out to long long is a necessity, but the conversions to float and double are simply conveniences. Conversion from floating is explicit, to avoid unintended consequences with arithmetic operators, when later sampleCount ceases to be an alias for an integral type. Some conversions are not made explicit, where I expect to change the type of the variable later to have mere size_t width.
451 lines
13 KiB
C++
451 lines
13 KiB
C++
/**********************************************************************
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Audacity: A Digital Audio Editor
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Types.h
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Leland Lucius
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Copyright (c) 2014, Audacity Team
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the copyright holder nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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**********************************************************************/
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#ifndef __AUDACITY_TYPES_H__
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#define __AUDACITY_TYPES_H__
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#include <algorithm>
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#include <wx/string.h>
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#include <wx/arrstr.h>
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// ----------------------------------------------------------------------------
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// TODO: I'd imagine this header may be replaced by other public headers. But,
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// to try and minimize more changes to the base code, we can use this
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// until proper public headers are created for the stuff in here.
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// ----------------------------------------------------------------------------
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// ----------------------------------------------------------------------------
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// A native 64-bit integer...used when referring to any number of samples
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// ----------------------------------------------------------------------------
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class sampleCount
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{
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public:
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using type = long long;
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static_assert(sizeof(type) == 8, "Wrong width of sampleCount");
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sampleCount () : value { 0 } {}
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sampleCount ( type v ) : value { v } {}
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sampleCount ( const sampleCount& ) = default;
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sampleCount &operator= ( const sampleCount& ) = default;
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operator type () const { return value; }
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float as_float() const { return value; }
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double as_double() const { return value; }
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long long as_long_long() const { return value; }
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sampleCount &operator += (sampleCount b) { value += b.value; return *this; }
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sampleCount &operator -= (sampleCount b) { value -= b.value; return *this; }
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sampleCount &operator *= (sampleCount b) { value *= b.value; return *this; }
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sampleCount &operator /= (sampleCount b) { value /= b.value; return *this; }
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sampleCount &operator %= (sampleCount b) { value %= b.value; return *this; }
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sampleCount &operator ++ () { ++value; return *this; }
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sampleCount operator ++ (int)
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{ sampleCount result{ *this }; ++value; return result; }
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sampleCount &operator -- () { --value; return *this; }
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sampleCount operator -- (int)
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{ sampleCount result{ *this }; --value; return result; }
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private:
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type value;
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};
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namespace std
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{
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inline sampleCount min (sampleCount a, sampleCount b)
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{
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return a < b ? a : b;
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}
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inline sampleCount max (sampleCount a, sampleCount b)
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{
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return a > b ? a : b;
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}
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}
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inline
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sampleCount operator + (sampleCount a, sampleCount b)
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{ return (long long)a + (long long)b; }
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inline
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sampleCount operator + (sampleCount a, size_t b)
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{ return (long long)a + b; }
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inline
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sampleCount operator + (size_t a, sampleCount b)
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{ return a + (long long)b; }
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inline
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sampleCount operator + (sampleCount a, int b)
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{ return (long long)a + b; }
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inline
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sampleCount operator + (int a, sampleCount b)
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{ return a + (long long)b; }
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inline
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sampleCount operator + (sampleCount a, long b)
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{ return (long long)a + b; }
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inline
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sampleCount operator + (long a, sampleCount b)
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{ return a + (long long)b; }
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inline
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sampleCount operator + (sampleCount a, long long b)
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{ return (long long)a + b; }
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inline
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sampleCount operator + (long long a, sampleCount b)
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{ return a + (long long)b; }
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inline
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sampleCount operator + (sampleCount a, unsigned b)
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{ return (long long)a + b; }
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inline
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sampleCount operator + (unsigned a, sampleCount b)
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{ return a + (long long)b; }
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inline
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sampleCount operator - (sampleCount a, sampleCount b)
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{ return (long long)a - (long long)b; }
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inline
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sampleCount operator - (sampleCount a, size_t b)
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{ return (long long)a - b; }
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inline
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sampleCount operator - (size_t a, sampleCount b)
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{ return a - (long long)b; }
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inline
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sampleCount operator - (sampleCount a, int b)
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{ return(long long) a - b; }
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inline
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sampleCount operator - (int a, sampleCount b)
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{ return a - (long long)b; }
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inline
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sampleCount operator - (sampleCount a, long b)
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{ return (long long)a - b; }
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inline
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sampleCount operator - (long a, sampleCount b)
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{ return a - (long long)b; }
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inline
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sampleCount operator - (sampleCount a, long long b)
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{ return (long long)a - b; }
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inline
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sampleCount operator - (long long a, sampleCount b)
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{ return a - (long long)b; }
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inline
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sampleCount operator - (sampleCount a, unsigned b)
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{ return (long long)a - b; }
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inline
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sampleCount operator - (unsigned a, sampleCount b)
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{ return a - (long long)b; }
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inline
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sampleCount operator * (sampleCount a, sampleCount b)
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{ return (long long)a * (long long)b; }
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inline
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sampleCount operator * (sampleCount a, int b)
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{ return (long long)a * b; }
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inline
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sampleCount operator * (int a, sampleCount b)
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{ return a * (long long)b; }
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inline
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sampleCount operator * (sampleCount a, unsigned b)
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{ return (long long)a * b; }
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inline
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sampleCount operator * (unsigned a, sampleCount b)
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{ return a * (long long)b; }
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inline
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sampleCount operator * (sampleCount a, long b)
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{ return (long long)a * b; }
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inline
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sampleCount operator * (long a, sampleCount b)
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{ return a * (long long)b; }
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inline
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sampleCount operator * (sampleCount a, unsigned long b)
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{ return (long long)a * b; }
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inline
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sampleCount operator * (unsigned long a, sampleCount b)
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{ return a * (long long)b; }
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inline
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sampleCount operator * (sampleCount a, long long b)
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{ return (long long)a * b; }
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inline
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sampleCount operator * (long long a, sampleCount b)
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{ return a * (long long)b; }
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inline
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sampleCount operator / (sampleCount a, sampleCount b)
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{ return (long long)a / (long long)b; }
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inline
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sampleCount operator / (sampleCount a, int b)
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{ return (long long)a / b; }
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inline
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sampleCount operator / (sampleCount a, size_t b)
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{ return (long long)a / b; }
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inline
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double operator / (sampleCount a, double b)
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{ return (long long)a / b; }
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inline
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float operator / (float a, sampleCount b)
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{ return a / (long long)b; }
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inline
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double operator / (double a, sampleCount b)
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{ return a / (long long)b; }
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inline
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double operator + (sampleCount a, double b)
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{ return (long long)a + b; }
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inline
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double operator + (double a, sampleCount b)
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{ return a + (long long)b; }
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inline
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double operator - (sampleCount a, double b)
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{ return (long long)a - b; }
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inline
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double operator - (double a, sampleCount b)
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{ return a - (long long)b; }
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inline
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double operator * (sampleCount a, double b)
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{ return (long long)a * b; }
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inline
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double operator * (double a, sampleCount b)
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{ return a * (long long)b; }
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inline
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float operator - (float a, sampleCount b)
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{ return a - (long long)b; }
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inline
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float operator * (float a, sampleCount b)
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{ return a * (long long)b; }
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inline
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float operator * (sampleCount a, float b)
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{ return (long long)a * b; }
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// ----------------------------------------------------------------------------
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// Function returning the minimum of a sampleCount and a size_t,
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// hiding the casts
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// ----------------------------------------------------------------------------
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inline size_t limitSampleBufferSize( size_t bufferSize, sampleCount limit )
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{
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return static_cast<size_t> (
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std::min( sampleCount( bufferSize ), std::max( sampleCount(0), limit ) )
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);
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}
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// ----------------------------------------------------------------------------
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// Supported sample formats
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// ----------------------------------------------------------------------------
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typedef enum
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{
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int16Sample = 0x00020001,
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int24Sample = 0x00040001,
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floatSample = 0x0004000F
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} sampleFormat;
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// ----------------------------------------------------------------------------
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// Provide the number of bytes a specific sample will take
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// ----------------------------------------------------------------------------
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#define SAMPLE_SIZE(SampleFormat) (SampleFormat >> 16)
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// ----------------------------------------------------------------------------
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// Generic pointer to sample data
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// ----------------------------------------------------------------------------
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typedef char *samplePtr;
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typedef const char *constSamplePtr;
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// ----------------------------------------------------------------------------
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// The type for plugin IDs
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// ----------------------------------------------------------------------------
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typedef wxString PluginID;
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// ----------------------------------------------------------------------------
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// Supported channel assignments
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// ----------------------------------------------------------------------------
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typedef enum
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{
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// Use to mark end of list
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ChannelNameEOL = -1,
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// The default channel assignment
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ChannelNameMono,
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// From this point, the channels follow the 22.2 surround sound format
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ChannelNameFrontLeft,
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ChannelNameFrontRight,
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ChannelNameFrontCenter,
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ChannelNameLowFrequency1,
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ChannelNameBackLeft,
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ChannelNameBackRight,
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ChannelNameFrontLeftCenter,
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ChannelNameFrontRightCenter,
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ChannelNameBackCenter,
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ChannelNameLowFrequency2,
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ChannelNameSideLeft,
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ChannelNameSideRight,
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ChannelNameTopFrontLeft,
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ChannelNameTopFrontRight,
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ChannelNameTopFrontCenter,
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ChannelNameTopCenter,
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ChannelNameTopBackLeft,
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ChannelNameTopBackRight,
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ChannelNameTopSideLeft,
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ChannelNameTopSideRight,
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ChannelNameTopBackCenter,
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ChannelNameBottomFrontCenter,
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ChannelNameBottomFrontLeft,
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ChannelNameBottomFrontRight,
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} ChannelName, *ChannelNames;
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// LLL FIXME: Until a complete API is devised, we have to use
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// AUDACITY_DLL_API when defining API classes. This
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// it ugly, but a part of the game. Remove it when
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// the API is complete.
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#if !defined(AUDACITY_DLL_API)
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// This was copied from "Audacity.h" so these headers wouldn't have
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// to include it.
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/* Magic for dynamic library import and export. This is unfortunately
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* compiler-specific because there isn't a standard way to do it. Currently it
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* works with the Visual Studio compiler for windows, and for GCC 4+. Anything
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* else gets all symbols made public, which gets messy */
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/* The Visual Studio implementation */
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#ifdef _MSC_VER
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#ifndef AUDACITY_DLL_API
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#ifdef BUILDING_AUDACITY
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#define AUDACITY_DLL_API _declspec(dllexport)
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#else
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#ifdef _DLL
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#define AUDACITY_DLL_API _declspec(dllimport)
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#else
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#define AUDACITY_DLL_API
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#endif
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#endif
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#endif
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#endif //_MSC_VER
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#ifdef __GNUC__
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#include "configunix.h"
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#endif
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/* The GCC-elf implementation */
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#ifdef HAVE_VISIBILITY // this is provided by the configure script, is only
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// enabled for suitable GCC versions
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/* The incantation is a bit weird here because it uses ELF symbol stuff. If we
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* make a symbol "default" it makes it visible (for import or export). Making it
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* "hidden" means it is invisible outside the shared object. */
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#ifndef AUDACITY_DLL_API
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#ifdef BUILDING_AUDACITY
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#define AUDACITY_DLL_API __attribute__((visibility("default")))
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#else
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#define AUDACITY_DLL_API __attribute__((visibility("default")))
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#endif
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#endif
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#endif
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/* The GCC-win32 implementation */
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// bizzarely, GCC-for-win32 supports Visual Studio style symbol visibility, so
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// we use that if building on Cygwin
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#if defined __CYGWIN__ && defined __GNUC__
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#ifndef AUDACITY_DLL_API
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#ifdef BUILDING_AUDACITY
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#define AUDACITY_DLL_API _declspec(dllexport)
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#else
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#ifdef _DLL
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#define AUDACITY_DLL_API _declspec(dllimport)
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#else
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#define AUDACITY_DLL_API
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#endif
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#endif
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#endif
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#endif
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#endif
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#endif // __AUDACITY_TYPES_H__
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