Android-App/HeartRateCode-1.rtf at main · pavank63/Android-App · GitHub

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{\rtf1\ansi\ansicpg1252\cocoartf2709
\cocoatextscaling0\cocoaplatform0{\fonttbl\f0\fswiss\fcharset0 Helvetica;}
{\colortbl;\red255\green255\blue255;}
{\*\expandedcolortbl;;}
\margl1440\margr1440\vieww28600\viewh17440\viewkind0
\pard\tx720\tx1440\tx2160\tx2880\tx3600\tx4320\tx5040\tx5760\tx6480\tx7200\tx7920\tx8640\pardirnatural\partightenfactor0

\f0\fs24 \cf0 fun convertMediaUriToPath(uri: Uri?): String \{\
        val proj = arrayOf(MediaStore.Images.Media.DATA)\
        val cursor = contentResolver.query(uri!!, proj, null, null, null)\
        val column_index = cursor!!.getColumnIndexOrThrow(MediaStore.Images.Media.DATA)\
        cursor.moveToFirst()\
        path = cursor.getString(column_index)\
        cursor.close()\
        return path\
    \}\
\
        open class SlowTask\
            : AsyncTask<String, String, String?>() \{\
            override fun doInBackground(vararg params: String?): String? \{\
                var m_bitmap: Bitmap? = null\
                var retriever = MediaMetadataRetriever()\
                var frameList = ArrayList<Bitmap>()\
                try \{\
\
                    retriever.setDataSource(params[0])\
                    var duration =\
                        retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_FRAME_COUNT)\
                    var aduration = duration!!.toInt()\
                    var i = 10\
                    while (i < aduration) \{\
                        val bitmap = retriever.getFrameAtIndex(i)\
                        frameList.add(bitmap!!)\
                        i += 5\
                    \}\
                \} catch (m_e: Exception) \{\
                \} finally \{\
                    retriever?.release()\
                    var redBucket: Long = 0\
                    var pixelCount: Long = 0\
                    val a = mutableListOf<Long>()\
                    for (i in frameList) \{\
                        redBucket = 0\
                        for (y in 550 until 650) \{\
                            for (x in 550 until 650) \{\
                                val c: Int = i.getPixel(x, y)\
                                pixelCount++\
                                redBucket += Color.red(c) + Color.blue(c) + Color.green(c)\
                            \}\
                        \}\
                        a.add(redBucket)\
                    \}\
                    val b = mutableListOf<Long>()\
                    for (i in 0 until a.lastIndex - 5) \{\
                        var temp =\
                            (a.elementAt(i) + a.elementAt(i + 1) + a.elementAt(i + 2) + a.elementAt(\
                                i + 3\
                            ) + a.elementAt(\
                                i + 4\
                            )) / 4\
                        b.add(temp)\
                    \}\
                    var x = b.elementAt(0)\
                    var count = 0\
                    for (i in 1 until b.lastIndex) \{\
                        var p=b.elementAt(i.toInt())\
                        if ((p-x) > 3500) \{\
                            count = count + 1\
                        \}\
                        x = b.elementAt(i.toInt())\
                    \}\
                    var rate = ((count.toFloat() / 45) * 60).toInt()\
                    return (rate/2).toString()\
                \}\
            \}}