- 08 5月, 2013 1 次提交
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由 David Henningsson 提交于
Userspace is not meant to have to handle all strange dB ranges, so add a specification comment. Signed-off-by: NDavid Henningsson <david.henningsson@canonical.com> Signed-off-by: NTakashi Iwai <tiwai@suse.de>
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- 07 9月, 2012 1 次提交
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由 Takashi Iwai 提交于
This patch implements the basic data types for the standard channel mapping API handling. - The definitions of the channel positions and the new TLV types are added in sound/asound.h and sound/tlv.h, so that they can be referred from user-space. - Introduced a new helper function snd_pcm_add_chmap_ctls() to create control elements representing the channel maps for each PCM (sub)stream. - Some standard pre-defined channel maps are provided for convenience. Signed-off-by: NTakashi Iwai <tiwai@suse.de>
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- 16 7月, 2012 3 次提交
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由 Clemens Ladisch 提交于
Add a DECLARE_TLV_DB_RANGE() macro so that dB range information can be specified without having to count the items manually for TLV_DB_RANGE_HEAD(). Signed-off-by: NClemens Ladisch <clemens@ladisch.de> Signed-off-by: NTakashi Iwai <tiwai@suse.de>
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由 Clemens Ladisch 提交于
Add the DECLARE_TLV_CONTAINER() macro to allow having static TLVs containing more than one item. Signed-off-by: NClemens Ladisch <clemens@ladisch.de> Signed-off-by: NTakashi Iwai <tiwai@suse.de>
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由 Clemens Ladisch 提交于
Add helper macros with a little bit of preprocessor magic to automatically compute the length of a TLV item. This lets us avoid having to compute this by hand, and will allow to use items that do not use a fixed length. Signed-off-by: NClemens Ladisch <clemens@ladisch.de> Signed-off-by: NTakashi Iwai <tiwai@suse.de>
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- 17 10月, 2010 1 次提交
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由 Takashi Iwai 提交于
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
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- 17 6月, 2009 1 次提交
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由 Takashi Iwai 提交于
Add new types for TLV dB scale specified with min/max values instead of min/step since the resolution can't match always with the one a device provides. For example, usb audio devices give 1/256 dB resolution while ALSA TLV is based on 1/100 dB resolution. The new min/max types have less problems because the possible rounding error happens only at min/max. Signed-off-by: NTakashi Iwai <tiwai@suse.de>
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- 16 10月, 2007 1 次提交
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由 Jaroslav Kysela 提交于
Signed-off-by: NJaroslav Kysela <perex@perex.cz>
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- 23 9月, 2006 3 次提交
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由 Takashi Iwai 提交于
Added the definition of TLV dB range compound. It contains one or more dB-range or linear-volume TLV entries with min/max ranges. Used for volume controls with non-linear curves. Signed-off-by: NTakashi Iwai <tiwai@suse.de> Signed-off-by: NJaroslav Kysela <perex@suse.cz>
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由 Takashi Iwai 提交于
Added the definition of linear volume TLV type. Some DSP chips and codecs (e.g. AK codec) use linear volume control. Signed-off-by: NTakashi Iwai <tiwai@suse.de> Signed-off-by: NJaroslav Kysela <perex@suse.cz>
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由 Jaroslav Kysela 提交于
This patch implements a TLV mechanism to transfer an additional information like dB scale to the user space. The types might be extended in future. Acked-by: NTakashi Iwai <tiwai@suse.de> Signed-off-by: NJaroslav Kysela <perex@suse.cz>
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