57 lines
1.9 KiB
Swift
57 lines
1.9 KiB
Swift
import Foundation
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struct MP4VisualSampleEntry: MP4SampleEntry {
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static let hSolution: UInt32 = 0x00480000
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static let vSolution: UInt32 = 0x00480000
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static let depth: UInt16 = 0x0018
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// MARK: MP4SampleEntry
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var size: UInt32 = 0
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var type: String = ""
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var offset: UInt64 = 0
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var children: [MP4BoxConvertible] = []
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var dataReferenceIndex: UInt16 = 0
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// MARK: MP4VisualSampleEntryBox
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var width: UInt16 = 0
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var height: UInt16 = 0
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var hSolution: UInt32 = Self.hSolution
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var vSolution: UInt32 = Self.vSolution
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var frameCount: UInt16 = 1
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var compressorname: String = ""
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var depth: UInt16 = Self.depth
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}
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extension MP4VisualSampleEntry: DataConvertible {
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var data: Data {
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get {
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Data()
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}
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set {
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do {
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let buffer = ByteArray(data: newValue)
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size = try buffer.readUInt32()
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type = try buffer.readUTF8Bytes(4)
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buffer.position += 24
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width = try buffer.readUInt16()
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height = try buffer.readUInt16()
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hSolution = try buffer.readUInt32()
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vSolution = try buffer.readUInt32()
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buffer.position += 4
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frameCount = try buffer.readUInt16()
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compressorname = try buffer.readUTF8Bytes(32)
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depth = try buffer.readUInt16()
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_ = try buffer.readUInt16()
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while 0 < buffer.bytesAvailable {
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let size = try buffer.readUInt32()
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_ = try buffer.readUTF8Bytes(4)
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buffer.position -= 8
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var entry = MP4Box()
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entry.data = try buffer.readBytes(Int(size))
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children.append(entry)
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}
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} catch {
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logger.error(error)
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}
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}
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}
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}
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