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#pragma once
#include "audio/types.h"
#include "util/assert.h"
#include "util/macros.h"
#include "util/optional.h"
namespace mixxx {
namespace audio {
// Properties that characterize an uncompressed PCM audio signal.
class SignalInfo final {
// Properties
MIXXX_DECL_PROPERTY(ChannelCount, channelCount, ChannelCount)
MIXXX_DECL_PROPERTY(SampleRate, sampleRate, SampleRate)
MIXXX_DECL_PROPERTY(OptionalSampleLayout, sampleLayout, SampleLayout)
public:
constexpr SignalInfo() = default;
constexpr explicit SignalInfo(
OptionalSampleLayout sampleLayout)
: m_sampleLayout(sampleLayout) {
}
SignalInfo(
ChannelCount channelCount,
SampleRate sampleRate,
OptionalSampleLayout sampleLayout = std::nullopt)
: m_channelCount(channelCount),
m_sampleRate(sampleRate),
m_sampleLayout(sampleLayout) {
}
SignalInfo(SignalInfo&&) = default;
SignalInfo(const SignalInfo&) = default;
/*non-virtual*/ ~SignalInfo() = default;
constexpr bool isValid() const {
return getChannelCount().isValid() &&
getSampleRate().isValid();
}
SignalInfo& operator=(SignalInfo&&) = default;
SignalInfo& operator=(const SignalInfo&) = default;
// Conversion: #samples / sample offset -> #frames / frame offset
// Only works for integer sample offsets on frame boundaries!
SINT samples2frames(SINT samples) const {
DEBUG_ASSERT(getChannelCount().isValid());
DEBUG_ASSERT(0 == (samples % getChannelCount()));
return samples / getChannelCount();
}
// Conversion: #frames / frame offset -> #samples / sample offset
SINT frames2samples(SINT frames) const {
DEBUG_ASSERT(getChannelCount().isValid());
return frames * getChannelCount();
}
// Conversion: #frames / frame offset -> second offset
double frames2secs(SINT frames) const {
DEBUG_ASSERT(getSampleRate().isValid());
return static_cast<double>(frames) / getSampleRate();
}
// Conversion: second offset -> #frames / frame offset
double secs2frames(double seconds) const {
DEBUG_ASSERT(getSampleRate().isValid());
return seconds * getSampleRate();
}
// Conversion: #frames / frame offset -> millisecond offset
double frames2millis(SINT frames) const {
return frames2secs(frames) * 1000;
}
// Conversion: millisecond offset -> #frames / frame offset
double millis2frames(double milliseconds) const {
return secs2frames(milliseconds / 1000);
}
};
bool operator==(
const SignalInfo& lhs,
const SignalInfo& rhs);
inline bool operator!=(
const SignalInfo& lhs,
const SignalInfo& rhs) {
return !(lhs == rhs);
}
QDebug operator<<(QDebug dbg, const SignalInfo& arg);
} // namespace audio
} // namespace mixxx
Q_DECLARE_METATYPE(mixxx::audio::SignalInfo)
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