65 lines
1.6 KiB
Swift
65 lines
1.6 KiB
Swift
import Foundation
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enum ElementaryStreamType: UInt8 {
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case mpeg1Video = 0x01
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case mpeg2Video = 0x02
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case mpeg1Audio = 0x03
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case mpeg2Audio = 0x04
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case mpeg2TabledData = 0x05
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case mpeg2PacketizedData = 0x06
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case adtsaac = 0x0F
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case h263 = 0x10
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case h264 = 0x1B
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case h265 = 0x24
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}
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struct ElementaryStreamSpecificData {
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static let fixedHeaderSize: Int = 5
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var streamType: UInt8 = 0
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var elementaryPID: UInt16 = 0
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var ESInfoLength: UInt16 = 0
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var ESDescriptors = Data()
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init() {
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}
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init?(_ data: Data) {
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self.data = data
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}
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}
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extension ElementaryStreamSpecificData: DataConvertible {
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// MARK: DataConvertible
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var data: Data {
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get {
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ByteArray()
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.writeUInt8(streamType)
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.writeUInt16(elementaryPID | 0xe000)
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.writeUInt16(ESInfoLength | 0xf000)
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.writeBytes(ESDescriptors)
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.data
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}
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set {
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let buffer = ByteArray(data: newValue)
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do {
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streamType = try buffer.readUInt8()
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elementaryPID = try buffer.readUInt16() & 0x0fff
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ESInfoLength = try buffer.readUInt16() & 0x01ff
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ESDescriptors = try buffer.readBytes(Int(ESInfoLength))
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} catch {
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logger.error("\(buffer)")
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}
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}
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}
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}
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extension ElementaryStreamSpecificData: CustomDebugStringConvertible {
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// MARK: CustomDebugStringConvertible
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var debugDescription: String {
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Mirror(reflecting: self).debugDescription
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}
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}
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