fs2.protocols.mpeg.transport.TransportStreamHeader.scala Maven / Gradle / Ivy
/*
* Copyright (c) 2013 Functional Streams for Scala
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
// Adapted from scodec-protocols, licensed under 3-clause BSD
package fs2.protocols.mpeg
package transport
import scodec.Codec
import scodec.codecs._
case class TransportStreamHeader(
transportErrorIndicator: Boolean,
payloadUnitStartIndicator: Boolean,
transportPriority: Boolean,
pid: Pid,
scramblingControl: Int,
adaptationFieldControl: Int,
continuityCounter: ContinuityCounter
) {
def adaptationFieldIncluded: Boolean = adaptationFieldControl >= 2
def payloadIncluded: Boolean = adaptationFieldControl == 1 || adaptationFieldControl == 3
}
object TransportStreamHeader {
implicit val codec: Codec[TransportStreamHeader] = "transport_stream_header" | fixedSizeBytes(
4,
("syncByte" | constant(0x47)) ~>
("transportErrorIndicator" | bool) ::
("payloadUnitStartIndicator" | bool) ::
("transportPriority" | bool) ::
("pid" | Codec[Pid]) ::
("scramblingControl" | uint2) ::
("adaptationFieldControl" | uint2) ::
("continuityCounter" | Codec[ContinuityCounter])
).as[TransportStreamHeader]
}