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/*
Copyright (C) 2006 Paul Davis
Author: David Robillard
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __ardour_chan_count_h__
#define __ardour_chan_count_h__
#include <cassert>
#include <ostream>
#include "pbd/xml++.h"
#include "ardour/data_type.h"
#ifdef INFINITE
#undef INFINITE
#endif
namespace ARDOUR {
/** A count of channels, possibly with many types.
*
* Operators are defined so this may safely be used as if it were a simple
* (single-typed) integer count of channels.
*/
class LIBARDOUR_API ChanCount {
public:
ChanCount(const XMLNode& node);
ChanCount() { reset(); }
// Convenience constructor for making single-typed streams (stereo, mono, etc)
ChanCount(DataType type, uint32_t channels) {
reset();
set(type, channels);
}
void reset() {
for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
_counts[*t] = 0;
}
}
void set(DataType t, uint32_t count) { assert(t != DataType::NIL); _counts[t] = count; }
uint32_t get(DataType t) const { assert(t != DataType::NIL); return _counts[t]; }
inline uint32_t n (DataType t) const { return _counts[t]; }
inline uint32_t n_audio() const { return _counts[DataType::AUDIO]; }
inline void set_audio(uint32_t a) { _counts[DataType::AUDIO] = a; }
inline uint32_t n_midi() const { return _counts[DataType::MIDI]; }
inline void set_midi(uint32_t m) { _counts[DataType::MIDI] = m; }
uint32_t n_total() const {
uint32_t ret = 0;
for (uint32_t i=0; i < DataType::num_types; ++i)
ret += _counts[i];
return ret;
}
bool operator==(const ChanCount& other) const {
for (uint32_t i=0; i < DataType::num_types; ++i)
if (_counts[i] != other._counts[i])
return false;
return true;
}
bool operator!=(const ChanCount& other) const {
return ! (*this == other);
}
bool operator<(const ChanCount& other) const {
for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
if (_counts[*t] > other._counts[*t]) {
return false;
}
}
return (*this != other);
}
bool operator<=(const ChanCount& other) const {
return ( (*this < other) || (*this == other) );
}
bool operator>(const ChanCount& other) const {
for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
if (_counts[*t] < other._counts[*t]) {
return false;
}
}
return (*this != other);
}
bool operator>=(const ChanCount& other) const {
return ( (*this > other) || (*this == other) );
}
ChanCount operator+(const ChanCount& other) const {
ChanCount ret;
for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
ret.set(*t, get(*t) + other.get(*t));
}
return ret;
}
ChanCount& operator+=(const ChanCount& other) {
for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
_counts[*t] += other._counts[*t];
}
return *this;
}
static ChanCount min(const ChanCount& a, const ChanCount& b) {
ChanCount ret;
for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
ret.set(*t, std::min(a.get(*t), b.get(*t)));
}
return ret;
}
static ChanCount max(const ChanCount& a, const ChanCount& b) {
ChanCount ret;
for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
ret.set(*t, std::max(a.get(*t), b.get(*t)));
}
return ret;
}
XMLNode* state(const std::string& name) const;
static const ChanCount INFINITE;
static const ChanCount ZERO;
private:
uint32_t _counts[DataType::num_types];
};
} // namespace ARDOUR
LIBARDOUR_API std::ostream& operator<<(std::ostream& o, const ARDOUR::ChanCount& c);
#endif // __ardour_chan_count_h__
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