Using RICOH THETA SDK for iOS - An Introduction

THETA API Usage
7

Thanks @craig, I am using the livePreview in the SDK and this is the code taken from the sample app that cause 80-100% cpu usage. Do you happen to have sample code of iteration only through the current chunk that you can share with the community?

repeat {
            var soi: Int?
            var eoi: Int?
            var i = 0

            dataBuffer.withUnsafeBytes { (bytes: UnsafePointer<UInt8>) -> Void in
                while i < dataBuffer.count - 1 {
                    if JPEG_SOI[0] == bytes[i] && JPEG_SOI[1] == bytes[i + 1] {
                        soi = i
                        i += 1
                        break
                    }
                    i += 1
                }

                while i < dataBuffer.count - 1 {
                    if JPEG_EOI[0] == bytes[i] && JPEG_EOI[1] == bytes[i + 1] {
                        i += 1
                        eoi = i
                        break
                    }
                    i += 1
                }

            }

            guard let start = soi, let end = eoi else {
                return
            }

            let frameData = dataBuffer.subdata(in: start..<(end + 1))
            completionHandler(frameData, nil, nil)
            dataBuffer = dataBuffer.subdata(in: (end + 1)..<dataBuffer.count)
        } while dataBuffer.count >= 4

I have also tried the following, but it was still yielding 80-100% cpu usage

        var soi: Int?
        var eoi: Int?
        var i = 0

        dataBuffer.withUnsafeBytes { bytes in
            while i < self.dataBuffer.count - 1 {
                if self.JPEG_SOI[0] == bytes[i] && self.JPEG_SOI[1] == bytes[i + 1] {
                    soi = i
                    i += 1
                    break
                }
                i += 1
            }

            while i < self.dataBuffer.count - 1 {
                if self.JPEG_EOI[0] == bytes[i] && self.JPEG_EOI[1] == bytes[i + 1] {
                    i += 1
                    eoi = i
                    break
                }
                i += 1
            }
        }

        guard let start = soi, let end = eoi else {
            return
        }

        let frameData = dataBuffer.subdata(in: start..<(end + 1))
        completionHandler(frameData, nil, nil)
        dataBuffer = dataBuffer.subdata(in: (end + 1)..<dataBuffer.count)