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https://github.com/langhuihui/monibuca.git
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8a9fffb987
- Refactor frame converter implementation - Update mp4 track to use ICodex - General refactoring and code improvements 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
98 lines
2.1 KiB
Go
98 lines
2.1 KiB
Go
package box
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import (
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"encoding/binary"
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"io"
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"net"
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)
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// Box Type: 'hdlr'
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// Container: Media Box (‘mdia’) or Meta Box (‘meta’)
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// Mandatory: Yes
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// Quantity: Exactly one
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// aligned(8) class HandlerBox extends FullBox(‘hdlr’, version = 0, 0) {
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// unsigned int(32) pre_defined = 0;
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// unsigned int(32) handler_type;
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// const unsigned int(32)[3] reserved = 0;
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// string name;
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// }
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// handler_type
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// value from a derived specification:
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// ‘vide’ Video track
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// ‘soun’ Audio track
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// ‘hint’ Hint track
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// ‘meta’ Timed Metadata track
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// ‘auxv’ Auxiliary Video track
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type HandlerType = [4]byte
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type HandlerBox struct {
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FullBox
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Pre_defined uint32
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Handler_type HandlerType
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Name string
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}
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func NewHandlerBox(handlerType HandlerType, name string) *HandlerBox {
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return &HandlerBox{
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FullBox: FullBox{
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BaseBox: BaseBox{
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typ: TypeHDLR,
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size: uint32(20 + len(name) + 1 + FullBoxLen),
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},
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},
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Handler_type: handlerType,
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Name: name,
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}
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}
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func (hdlr *HandlerBox) Unmarshal(buf []byte) (IBox, error) {
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hdlr.Pre_defined = binary.BigEndian.Uint32(buf[:4])
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copy(hdlr.Handler_type[:], buf[4:8])
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hdlr.Name = string(buf[20:])
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return hdlr, nil
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}
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func (hdlr *HandlerBox) WriteTo(w io.Writer) (n int64, err error) {
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var tmp [20]byte
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binary.BigEndian.PutUint32(tmp[:], hdlr.Pre_defined)
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copy(tmp[4:8], hdlr.Handler_type[:])
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var buffer = net.Buffers{
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tmp[:],
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[]byte(hdlr.Name),
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[]byte{0},
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}
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return buffer.WriteTo(w)
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}
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func GetHandlerType(cid MP4_CODEC_TYPE) HandlerType {
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switch cid {
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case MP4_CODEC_H264, MP4_CODEC_H265:
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return TypeVIDE
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case MP4_CODEC_AAC, MP4_CODEC_G711A, MP4_CODEC_G711U,
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MP4_CODEC_MP2, MP4_CODEC_MP3, MP4_CODEC_OPUS:
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return TypeSOUN
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default:
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panic("unsupport codec id")
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}
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}
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func MakeHdlrBox(hdt HandlerType) *HandlerBox {
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var hdlr *HandlerBox = nil
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switch hdt {
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case TypeVIDE:
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hdlr = NewHandlerBox(hdt, "VideoHandler")
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case TypeSOUN:
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hdlr = NewHandlerBox(hdt, "SoundHandler")
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default:
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hdlr = NewHandlerBox(hdt, "")
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}
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return hdlr
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}
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func init() {
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RegisterBox[*HandlerBox](TypeHDLR)
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}
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