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diff --git a/doc/faq/faq.txt b/doc/faq/faq.txt index a0fb2608f..84644784d 100644 --- a/doc/faq/faq.txt +++ b/doc/faq/faq.txt @@ -74,6 +74,15 @@ Table of Contents When I play this stream, xine shows video but there's no audio! Can xine produce 4-/5-channel surround audio output? What about ac3 output via spdif to an external ac3 decoder? + Getting SPDIF output from a SBLive 5.1 using OSS drivers + + Requirements + The OSS driver is maintained by creative and can be downloaded at http: + //opensource.creative.com/ + Setting up xine for SPDIF (AC3_passthrough) output + The cable used for the SBLive can easily be self-made or buy a stereo + 3.5mm jack to dual RCA cable. + Changing the volume with the GUI control has no effect! What's up!? Audio is stuttering and i see a lot of "metronom: fixing sound card drift by -2115 pts" on the console output @@ -871,6 +880,132 @@ xine can do that too. Pretty much the same story as for 4-/5-channel surround ------------------------------------------------------------------------------- +Getting SPDIF output from a SBLive 5.1 using OSS drivers + +The following explains how to get the above configuration going with xine. Some +parts of it may applicable to other configurations (cards that use the EMU10k1 +chip) as well. + + + +------------------------------------------------------------------------------- + +Requirements + + 1. xine-lib >= 1.x.x + + 2. OSS driver + + 3. An external decoder + + 4. A cable to connect the SBLive to the external decoder + +The configuration described was tested using the following equipment : +Soundblaster live 5.1 (rev 7) Yamaha DSP-AX620 external decoder + +------------------------------------------------------------------------------- + +The OSS driver is maintained by creative and can be downloaded at http:// +opensource.creative.com/ + +The driver package contains documentation on how to install it. Besides that +I'd like to add the following notes. + +In order to compile and install these drivers, you need a valid kernel +configuration file. For RedHat Linux's pre-compiled kernels these configuration +files can be found in /usr/src/linux/configs After you've located the correct +config file for your kernel, you need to copy it to /usr/src/linux/.config For +example, when you run the 2.4.18-i686 kernel do : + cp /usr/src/linux/configs/kernel-2.4.18-i686.config /usr/src/linux/.config + +Make sure that the emu10k1 module that is currently installed is not loaded. To +unload the modules : + /sbin/modprobe -rv emu10k1.o ac97_codec.o + +If this mentions that the device is busy, some program is using the driver. +Some example could be a mixer application or sound daemon like artsd. You'll +need to close down the applications before continuing. At success it should +print something like : + # delete emu10k1 + # delete ac97_codec + # delete soundcore + +Run make in the directory where you unpacked the driver and follow the +instructions printed at the end of each step. The last step should be: + make install-tools + +As the README of the driver package mentions the SPDIF AC3 output doesn't work +by default. In the directory utils/scripts an emu10k1.conf file can be found +which need to be placed in the default installation directory (/usr/local/etc). +After this the emu10k1.conf needs to be modified. The following settings worked +fine for me (I don't use the analog outputs of the card) : + CARD_IS_5_1=yes + USE_DIGITAL_OUTPUT=yes + ENABLE_TONE_CONTROL=yes + AC3PASSTHROUGH=yes + ENABLE_LIVEDRIVE_IR=no + INVERT_REAR=no + MULTICHANNEL=yes + ROUTE_ALL_TO_SUB=no + ANALOG_FRONT_BOOST=no + SURROUND=no + PROLOGIC=no + ENABLE_CD_Spdif=yes + ENABLE_OPTICAL_SPDIF=no + ENABLE_LINE2_MIC2=no + ENABLE_RCA_SPDIF=no + ENABLE_RCA_AUX=no + +After modifying the emu10k1.conf, you need to modify your /etc/modules.conf and +make sure the following lines are in there. + alias sound-slot-0 emu10k1 + post-install emu10k1 /usr/local/etc/emu-script + +After saving the changes to modules.conf, run + /sbin/depmod -a + +Now, you're ready to load the new modules and set the correct options for it. +To load the modules run : + /sbin/modprobe emu10k1 + + +------------------------------------------------------------------------------- + +Setting up xine for SPDIF (AC3_passthrough) output + +You can either use the config dialog or edit the config file (~/.xine/config2) +yourself: + audio.a52_pass_through:1 + +In case the setting is not in the file you can add it. + +------------------------------------------------------------------------------- + +The cable used for the SBLive can easily be self-made or buy a stereo 3.5mm +jack to dual RCA cable. + + What you need to make the cable yourself : + a) stereo 3.5mm jack plug + b) RCA plug + c) shielded cable (video coax 75 Ohm will do) + + Connect them as follows : + + center pin jackplug ------|----- center pin RCA plug + GND __|__ GND + + +In order to test it use a DVD with AC3 or DTS track start xine and select the +right audio track from user interface or start xine as: + xine dvd://1 -a 0 + +The external decoder should display something like "Dolby Digital" in case the +selected audio track contains AC3 data or "DTS" in case the selected audio +track contains DTS data. Of course stereo audio also goes through the SPDIF +output, so the analog outputs of the SBLive 5.1 are not needed anymore. + +------------------------------------------------------------------------------- + Changing the volume with the GUI control has no effect! What's up!? Some xine drivers do not support volume changing although the GUI will show the |