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pcm: add and describe SND_PCM_FORMAT_{S, U}20

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This patch adds and describes in various functions that query format
properties SND_PCM_FORMAT_{S,U}20 formats that were recently added to the
kernel as SNDRV_PCM_FORMAT_{S,U}20.

These formats are similar to existing 20-bit PCM formats
SND_PCM_FORMAT_{S,U}20_3, however they occupy 4 bytes instead of 3.

Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Maciej S. Szmigiero 2017-12-14 14:52:07 +01:00 • committed by Takashi Iwai
parent 22e6b3c200
commit d67e42c139
4 changed files with 70 additions and 5 deletions
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10
src/pcm/pcm.c
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@ -1780,6 +1780,10 @@ static const char *const snd_pcm_format_names[] = {
FORMAT(IMA_ADPCM),
FORMAT(MPEG),
FORMAT(GSM),
FORMAT(S20_LE),
FORMAT(S20_BE),
FORMAT(U20_LE),
FORMAT(U20_BE),
FORMAT(SPECIAL),
FORMAT(S24_3LE),
FORMAT(S24_3BE),
@ -1814,6 +1818,8 @@ static const char *const snd_pcm_format_aliases[SND_PCM_FORMAT_LAST+1] = {
FORMAT(FLOAT),
FORMAT(FLOAT64),
FORMAT(IEC958_SUBFRAME),
FORMAT(S20),
FORMAT(U20),
};
static const char *const snd_pcm_format_descriptions[] = {
@ -1842,6 +1848,10 @@ static const char *const snd_pcm_format_descriptions[] = {
FORMATD(IMA_ADPCM, "Ima-ADPCM"),
FORMATD(MPEG, "MPEG"),
FORMATD(GSM, "GSM"),
FORMATD(S20_LE, "Signed 20 bit Little Endian in 4 bytes, LSB justified"),
FORMATD(S20_BE, "Signed 20 bit Big Endian in 4 bytes, LSB justified"),
FORMATD(U20_LE, "Unsigned 20 bit Little Endian in 4 bytes, LSB justified"),
FORMATD(U20_BE, "Unsigned 20 bit Big Endian in 4 bytes, LSB justified"),
FORMATD(SPECIAL, "Special"),
FORMATD(S24_3LE, "Signed 24 bit Little Endian in 3bytes"),
FORMATD(S24_3BE, "Signed 24 bit Big Endian in 3bytes"),