/*
- Copyright (C) 2006 Paul Davis
- Author: Dave Robillard
+ 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
#ifndef __ardour_chan_count_h__
#define __ardour_chan_count_h__
-#include <ardour/data_type.h>
#include <cassert>
+#include <ostream>
+
+#include "pbd/xml++.h"
+#include "ardour/data_type.h"
+
+#ifdef INFINITE
+#undef INFINITE
+#endif
namespace ARDOUR {
* Operators are defined so this may safely be used as if it were a simple
* (single-typed) integer count of channels.
*/
-class ChanCount {
+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) {
+
+ /** Convenience constructor for making single-typed streams (mono, stereo, midi, etc)
+ * @param type data type
+ * @param count number of channels
+ */
+ ChanCount(DataType type, uint32_t count) {
reset();
- set(type, channels);
+ set(type, count);
}
+ /** zero count of all data types */
void reset() {
for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
_counts[*t] = 0;
}
}
-
+
+ /** set channel count for given type
+ * @param type data type
+ * @param count number of channels
+ */
void set(DataType t, uint32_t count) { assert(t != DataType::NIL); _counts[t] = count; }
+ /** query channel count for given type
+ * @param type data type
+ * @returns channel count for given type
+ */
uint32_t get(DataType t) const { assert(t != DataType::NIL); return _counts[t]; }
-
+
+ inline uint32_t n (DataType t) const { return _counts[t]; }
+
+ /** query number of audio channels
+ * @returns number of audio channels
+ */
inline uint32_t n_audio() const { return _counts[DataType::AUDIO]; }
+ /** set number of audio channels
+ * @param a number of audio channels
+ */
inline void set_audio(uint32_t a) { _counts[DataType::AUDIO] = a; }
-
+
+ /** query number of midi channels
+ * @returns number of midi channels
+ */
inline uint32_t n_midi() const { return _counts[DataType::MIDI]; }
+ /** set number of audio channels
+ * @param m number of midi channels
+ */
inline void set_midi(uint32_t m) { _counts[DataType::MIDI] = m; }
-
+
+ /** query total channel count of all data types
+ * @returns total channel count (audio + midi)
+ */
uint32_t n_total() const {
uint32_t ret = 0;
for (uint32_t i=0; i < DataType::num_types; ++i)
return true;
}
-
+
bool operator!=(const ChanCount& other) const {
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 ( (*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;
+ }
+
+ /** underflow safe subtraction */
+ ChanCount operator-(const ChanCount& other) const {
+ ChanCount ret;
+ for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
+ if (get(*t) < other.get(*t)) {
+ ret.set(*t, 0);
+ } else {
+ ret.set(*t, get(*t) - other.get(*t));
+ }
+ }
+ return ret;
+ }
+
+ ChanCount operator*(const unsigned int factor) const {
+ ChanCount ret;
+ for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
+ ret.set(*t, get(*t) * factor );
+ }
+ return ret;
+ }
+
+ /** underflow safe subtraction */
+ ChanCount& operator-=(const ChanCount& other) {
+ for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
+ if (_counts[*t] < other._counts[*t]) {
+ _counts[*t] = 0;
+ } else {
+ _counts[*t] -= other._counts[*t];
+ }
+ }
+ return *this;
+ }
+
+ 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;
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__
projects / ardour.git / blobdiff