[pulseaudio-tickets] [PulseAudio] #604: virtualized downmix to headphone stereo patch

[PulseAudio]

#604: virtualized downmix to headphone stereo patch
---------------------+------------------------------------------------------
  Reporter:  Rudd-O  |       Owner:  lennart      
      Type:  defect  |      Status:  new          
 Milestone:          |   Component:  module-alsa-*
Resolution:          |    Keywords:               
---------------------+------------------------------------------------------

Comment(by Rudd-O):

 This is an updated vdownmix.conf ALSA configuration file, as per the
 patch's comment:

 ------------------------------------------------------------------
 pcm.!vdownmix51 {
         @args [ CARD DEV ]
         @args.CARD {
                 type string
                 default {
                         @func getenv
                         vars [
                                 ALSA_VDOWNMIX51_CARD
                                 ALSA_PCM_CARD
                                 ALSA_CARD
                         ]
                         default {
                                 @func refer
                                 name defaults.pcm.vdownmix51.card
                         }
                 }
         }
         @args.DEV {
                 type integer
                 default {
                         @func igetenv
                         vars [
                                 ALSA_VDOWNMIX51_DEVICE
                         ]
                         default {
                                 @func refer
                                 name defaults.pcm.vdownmix51.device
                         }
                 }
         }
         type vdownmix
         slave.pcm {
                 @func refer
                 name {
                         @func concat
                         strings [
                                 "cards."
                                 {
                                         @func card_driver
                                         card $CARD
                                 }
                                 ".pcm.vdownmix51." $DEV ":CARD=" $CARD
                         ]
                 }
         }
         hint {
                 description "Downmix to stereo 5.1 Surround output to
 Front, Center, Rear and Subwoofer speakers"
                 device $DEV
         }
 }

 pcm.!vdownmix40 {
         @args [ CARD DEV ]
         @args.CARD {
                 type string
                 default {
                         @func getenv
                         vars [
                                 ALSA_VDOWNMIX40_CARD
                                 ALSA_PCM_CARD
                                 ALSA_CARD
                         ]
                         default {
                                 @func refer
                                 name defaults.pcm.vdownmix40.card
                         }
                 }
         }
         @args.DEV {
                 type integer
                 default {
                         @func igetenv
                         vars [
                                 ALSA_VDOWNMIX40_DEVICE
                         ]
                         default {
                                 @func refer
                                 name defaults.pcm.vdownmix40.device
                         }
                 }
         }
         type vdownmix
         slave.pcm {
                 @func refer
                 name {
                         @func concat
                         strings [
                                 "cards."
                                 {
                                         @func card_driver
                                         card $CARD
                                 }
                                 ".pcm.vdownmix40." $DEV ":CARD=" $CARD
                         ]
                 }
         }
         hint {
                 description "Downmix to stereo 4.0 Surround output to
 Front, Center, Rear and Subwoofer speakers"
                 device $DEV
         }
 }
 ------------------------------------------------------------------

 Any ALSA device with support for stereo output will automatically gain
 these "plug devices".  You'll be able to virtualize surround sound output
 to PA in even meager stereo cards!

-- 
Ticket URL: <http://pulseaudio.org/ticket/604#comment:1>
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