mirror of
https://github.com/juce-framework/JUCE.git
synced 2026-01-10 23:44:24 +00:00
96 lines
3.9 KiB
C++
96 lines
3.9 KiB
C++
/*
|
|
==============================================================================
|
|
|
|
This file is part of the JUCE framework.
|
|
Copyright (c) Raw Material Software Limited
|
|
|
|
JUCE is an open source framework subject to commercial or open source
|
|
licensing.
|
|
|
|
By downloading, installing, or using the JUCE framework, or combining the
|
|
JUCE framework with any other source code, object code, content or any other
|
|
copyrightable work, you agree to the terms of the JUCE End User Licence
|
|
Agreement, and all incorporated terms including the JUCE Privacy Policy and
|
|
the JUCE Website Terms of Service, as applicable, which will bind you. If you
|
|
do not agree to the terms of these agreements, we will not license the JUCE
|
|
framework to you, and you must discontinue the installation or download
|
|
process and cease use of the JUCE framework.
|
|
|
|
JUCE End User Licence Agreement: https://juce.com/legal/juce-8-licence/
|
|
JUCE Privacy Policy: https://juce.com/juce-privacy-policy
|
|
JUCE Website Terms of Service: https://juce.com/juce-website-terms-of-service/
|
|
|
|
Or:
|
|
|
|
You may also use this code under the terms of the AGPLv3:
|
|
https://www.gnu.org/licenses/agpl-3.0.en.html
|
|
|
|
THE JUCE FRAMEWORK IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL
|
|
WARRANTIES, WHETHER EXPRESSED OR IMPLIED, INCLUDING WARRANTY OF
|
|
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.
|
|
|
|
==============================================================================
|
|
*/
|
|
|
|
namespace juce::midi_ci
|
|
{
|
|
|
|
/**
|
|
Utility functions for working with data formats used by property exchange
|
|
messages.
|
|
|
|
@tags{Audio}
|
|
*/
|
|
struct Encodings
|
|
{
|
|
/** Text in ACK and NAK messages can't be utf-8 or ASCII because each byte only has 7 usable bits.
|
|
The encoding rules are in section 5.10.4 of the CI spec.
|
|
*/
|
|
static String stringFrom7BitText (Span<const std::byte> bytes);
|
|
|
|
/** Text in ACK and NAK messages can't be utf-8 or ASCII because each byte only has 7 usable bits.
|
|
The encoding rules are in section 5.10.4 of the CI spec.
|
|
*/
|
|
static std::vector<std::byte> stringTo7BitText (const String& text);
|
|
|
|
/** Converts a list of bytes representing a 7-bit ASCII string to JSON. */
|
|
static var jsonFrom7BitText (Span<const std::byte> bytes)
|
|
{
|
|
return JSON::parse (stringFrom7BitText (bytes));
|
|
}
|
|
|
|
/** Converts a JSON object to a list of bytes in 7-bit ASCII format. */
|
|
static std::vector<std::byte> jsonTo7BitText (const var& v)
|
|
{
|
|
return stringTo7BitText (JSON::toString (v, JSON::FormatOptions{}.withSpacing (JSON::Spacing::none)));
|
|
}
|
|
|
|
/** Each group of seven stored bytes is transmitted as eight bytes.
|
|
First, the sign bits of the seven bytes are sent, followed by the low-order 7 bits of each byte.
|
|
*/
|
|
static std::vector<std::byte> toMcoded7 (Span<const std::byte> bytes);
|
|
|
|
/** Each group of seven stored bytes is transmitted as eight bytes.
|
|
First, the sign bits of the seven bytes are sent, followed by the low-order 7 bits of each byte.
|
|
*/
|
|
static std::vector<std::byte> fromMcoded7 (Span<const std::byte> bytes);
|
|
|
|
/** Attempts to encode the provided byte span using the specified encoding.
|
|
|
|
The ASCII encoding does not make any changes to the input stream, but
|
|
encoding will fail if any byte has its most significant bit set.
|
|
*/
|
|
static std::optional<std::vector<std::byte>> tryEncode (Span<const std::byte> bytes,
|
|
Encoding mutualEncoding);
|
|
|
|
/** Decodes the provided byte span using the specified encoding.
|
|
|
|
All bytes of the input must be 7-bit values, i.e. all most-significant bits
|
|
are unset.
|
|
*/
|
|
static std::vector<std::byte> decode (Span<const std::byte> bytes, Encoding mutualEncoding);
|
|
|
|
Encodings() = delete;
|
|
};
|
|
|
|
} // namespace juce::midi_ci
|