On 02/18/11 02:41, Arun Raghavan wrote:
Hello!
On Tue, 2011-02-15 at 22:02 +0530, Arun Raghavan wrote:
Hey folks,
I've put up a draft proposed API changes to get passthrough support to
the point where things Just Work⢠for at least the common cases, based
on previous discussion on-/off-list:
http://pulseaudio.org/wiki/PassthroughSupport
Please review/comment. Once we have some consensus, I'll send in patches
to actually get this done.
I've updated this page with the changes discussed so far (and translated
them into the actual API changes that we need). Please take a look and
let me know if this looks acceptable.
Cheers,
Arun
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The alsa driver has creates a /proc entry that lists the coding types
available for a particular device. It'd be nice if you would use that
for the list of supported coding types (at least for a default). I'm
not sure the list would be automatically updated if you unplugged a
device and plugged in a new device. The comprehensive list of supported
coding types is in alsa-kernel/pci/hda/hda-eld.c.
cat /proc/asound/card0/eld#1.0
monitor_present 1
eld_valid 1
monitor_name TX-SR608
connection_type HDMI
eld_version [0x2] CEA-861D or below
edid_version [0x3] CEA-861-B, C or D
manufacture_id 0xcb3d
product_id 0xa62
port_id 0x20000
support_hdcp 0
support_ai 0
audio_sync_delay 0
speakers [0x4f] FL/FR LFE FC RL/RR RLC/RRC
sad_count 8
sad0_coding_type [0x1] LPCM
sad0_channels 2
sad0_rates [0x1ee0] 44100 48000 88200 176400 192000 384000
sad0_bits [0xe0000] 16 20 24
sad1_coding_type [0x1] LPCM
sad1_channels 8
sad1_rates [0x1ee0] 44100 48000 88200 176400 192000 384000
sad1_bits [0xe0000] 16 20 24
sad2_coding_type [0x2] AC-3
sad2_channels 8
sad2_rates [0xe0] 44100 48000 88200
sad2_max_bitrate 640000
sad3_coding_type [0x7] DTS
sad3_channels 8
sad3_rates [0xc0] 48000 88200
sad3_max_bitrate 1536000
sad4_coding_type [0x9] DSD (One Bit Audio)
sad4_channels 6
sad4_rates [0x40] 48000
sad5_coding_type [0xa] E-AC-3/DD+ (Dolby Digital Plus)
sad5_channels 8
sad5_rates [0xc0] 48000 88200
sad6_coding_type [0xb] DTS-HD
sad6_channels 8
sad6_rates [0x1ec0] 48000 88200 176400 192000 384000
sad7_coding_type [0xc] MLP (Dolby TrueHD)
sad7_channels 8
sad7_rates [0x1480] 88200 192000
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