Determine required disk space size before downloading HLS with ExoPlayer

Question

I use HLS protocol and I need to determine the size of the video with the selected resolution, subtitles, and audio tracks. Unfortunately, I haven't found any examples in demo-app. I could define only the video track's size by multiplying the selected track's bitrate. But the size of multiple audio tracks and subtitles is not included in this number.

Answer 1

The best solution that I found

 private fun estimateTotalSize(helper: DownloadHelper, hlsAudioBitrate: Int): Long {
    var selectedSize: Long = 0
    val durationMs: Long = when (val manifest = helper.manifest) {
        is DashManifest -> {
            manifest.durationMs
        }
        is HlsManifest -> {
            manifest.mediaPlaylist.durationUs / 1000
        }
        is SsManifest -> {
            manifest.durationUs / 1000
        }
        else -> {
            0 // FIXME
        }
    }
    for (pi in 0 until helper.periodCount) {
        val mappedTrackInfo = helper.getMappedTrackInfo(pi)
        val rendererCount = mappedTrackInfo.rendererCount
        for (i in 0 until rendererCount) {
            val trackSelections: List<TrackSelection> = helper.getTrackSelections(pi, i)
            for (selection in trackSelections) {
                val format: Format = selection.getFormat(0)
                var bitrate: Int = format.bitrate
                if (bitrate <= 0) {
                    if (format.sampleMimeType != null && format.sampleMimeType!!.startsWith("audio/")) {
                        bitrate = hlsAudioBitrate
                    }
                }
                selectedSize += bitrate * durationMs / 1000 / 8
            }
        }
    }
    return selectedSize
}