71 lines
1.5 KiB
Go
71 lines
1.5 KiB
Go
// Copyright 2024 Martin Riedl
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package gomp4
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import (
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"encoding/binary"
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)
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type Fixed88 struct {
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b []byte
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}
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func NewFixed88ByBytes(b []byte) Fixed88 {
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return Fixed88{
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b: b,
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}
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}
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func (fixed Fixed88) ToUInt16() uint16 {
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return uint16(fixed.b[0])
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}
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func (fixed Fixed88) ToFloat32() float32 {
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var result float32 = 0
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a := uint16(fixed.b[0])
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b := uint16(fixed.b[1])
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result += float32(a)
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result += float32(b) / 1_000 // max of uint8 is 255
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return result
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}
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type Fixed1616 struct {
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b []byte
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}
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func NewFixed1616ByBytes(b []byte) Fixed1616 {
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return Fixed1616{
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b: b,
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}
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}
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func (fixed Fixed1616) ToUInt16() uint16 {
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return binary.BigEndian.Uint16(fixed.b[0:2])
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}
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func (fixed Fixed1616) ToFloat32() float32 {
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var result float32 = 0
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a := binary.BigEndian.Uint16(fixed.b[0:2])
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b := binary.BigEndian.Uint16(fixed.b[2:4])
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result += float32(a)
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result += float32(b) / 65535 // max of uint16 is 65535
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return result
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}
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