Date: Tue, 24 Jan 2012 13:57:02 +0100 From: =?ISO-8859-1?Q?Micka=EBl_Maillot?= <mickael.maillot@gmail.com> To: Alexander Motin <mav@freebsd.org> Cc: freebsd-multimedia@freebsd.org, FreeBSD current <freebsd-current@freebsd.org> Subject: Re: [RFT] Major snd_hda rewrite Message-ID: <CAKT0JB7Z=pwv9oryCcu2OV7kHnkXjPj-cYY_=0c6PMbNF1BLTw@mail.gmail.com> In-Reply-To: <4F1ACBA8.6000203@FreeBSD.org> References: <4F0DE3FD.2020203@FreeBSD.org> <20120112121853.GC1429@procyon.xvoid.org> <4F0ED8D0.8080403@FreeBSD.org> <CAKT0JB5xP__9KacknmkT8_QrC1hsq8Gj5quRY_FvgmB=sJGmSQ@mail.gmail.com> <4F171D7A.4080003@FreeBSD.org> <CAKT0JB6u-b1CTcYVphLnEf-rHCmuSLJJFrYOiiqChJKDYtRHtQ@mail.gmail.com> <4F177979.5010106@FreeBSD.org> <CAKT0JB7k0V42w0WGN1mq4sKgQxqbnf_NoDRZAxPrMGebuvUH2g@mail.gmail.com> <CAKT0JB5zOjmy1R13W%2BbY453VySOkYcShpnHwk8kbT=-yAUC2vQ@mail.gmail.com> <CAKT0JB5xHJ7=UFHDhumsiMqfYGEPV6QyNz2YbHb%2BojOUgw23WA@mail.gmail.com> <4F1ACBA8.6000203@FreeBSD.org>
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2012/1/21 Alexander Motin <mav@freebsd.org> > > From that description I can conclude that you are passing through > compressed DTS-HD and TrueHD streams to the receiver. What are the bitrates > of streams you are playing? It looks like your receiver doesn't receives > all data. If I understand right, to transfer with compressed bitrates above > 6.144Mbps special High Bit Rate mode should be activated in CODEC, when > data stream occupies all 8 HDMI channels instead of 2. I haven't > implemented this feature yet as my receiver doesn't support such HD formats. > i dont think bitrate is over 6.144Mbps. for TrueHD files, mediainfo reports: Format profile : TrueHD / Core Mode extension : CM (complete main) Codec ID : 131 Bit rate mode : Variable / Constant Bit rate : Unknown / 640 Kbps Maximum bit rate : 2 868 Kbps / 640 Kbps Channel(s) : 6 channels and for DTS-HDMA, mediainfo can't calculate it, but from description, all tested file have bitrate below 3689 kbps > I'll try to make a patch for it a bit later and send you to try. i'll be happy to try it. Until that time, is it possible to make your xbmc to decode those HD > streams into different number of uncompressed LPCM channels to play it that > way? yes, it's just an option. It would be interesting to test 6.0, 6.1, 7.0 and 7.1 LPCM configurations > with your receiver. Or at least normal definition 7.1 playback would be > interesting to test (you can just set vchanformat to s16le:7.1 or s32le:7.1 > and play anything). > > i sucessfully tried 6.1 and 7.1 LPCM in 16 bits. just a small channel order issue (center and a surround back inversion) which can be solved easily. i'll add 32bits support in XBMC later for my test but from what you say, it'll not work because 8 channels / 48khz / 16 bits = 6.144 Mbit/s. > What do you mean that you can't set more then 2 channels? I've never tried > to set ac3 format with more then 2 channels, but s16le:7.1 and s32le:7.1 > should work fine. At least s16le:5.1 and s32le:5.1 are working perfectly > for me. For HDA 24bit samples stored in memory as 32bit, so setting s24le > format only cause extra 24->32bit conversion. > > > i never show things like PCMDIR_...: Stream setup.... in my messages, so >> may be i use oss wrongly. >> > > They are printed only when hw.snd.verbose set to 4. > > ok thanks for the tips.
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