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| author | Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 2021-03-12 11:03:16 -0600 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2021-03-14 09:33:39 +0100 |
| commit | 00be486131129a6d209de62202d2a4974638127f (patch) | |
| tree | 7cadea5aa50f46d7489091b2e06b5db2161c9321 /speaker-test | |
| parent | c2d27acfce79dfdd23a397f884c3886511acbbf2 (diff) | |
| download | alsa-utils-00be486131129a6d209de62202d2a4974638127f.tar.gz | |
speaker-test: add support for S24_LE and S24_BE
These formats are sometimes advertised by drivers, e.g. SOF.
The format is 3 bytes packed in 32-bit container, with the MSB zeroed
out.
sample: 0x00123456
S24_LE format:
b0 56
b1 34
b2 12
b3 00
S24_BE format:
b0 00
b1 12
b2 34
b3 56
I only tested the S24_LE format with the SOF driver, S24_BE was added
for symmetry only.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'speaker-test')
| -rw-r--r-- | speaker-test/speaker-test.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/speaker-test/speaker-test.c b/speaker-test/speaker-test.c index 773af0a..fd13d88 100644 --- a/speaker-test/speaker-test.c +++ b/speaker-test/speaker-test.c @@ -285,6 +285,8 @@ static const int supported_formats[] = { SND_PCM_FORMAT_FLOAT_LE, SND_PCM_FORMAT_S24_3LE, SND_PCM_FORMAT_S24_3BE, + SND_PCM_FORMAT_S24_LE, + SND_PCM_FORMAT_S24_BE, SND_PCM_FORMAT_S32_LE, SND_PCM_FORMAT_S32_BE, -1 @@ -338,6 +340,20 @@ static void do_generate(uint8_t *frames, int channel, int count, *samp8++ = BE_INT(res.i) >> 8; *samp8++ = BE_INT(res.i) >> 16; break; + case SND_PCM_FORMAT_S24_LE: + res.i >>= 8; + *samp8++ = LE_INT(res.i); + *samp8++ = LE_INT(res.i) >> 8; + *samp8++ = LE_INT(res.i) >> 16; + *samp8++ = 0; + break; + case SND_PCM_FORMAT_S24_BE: + res.i >>= 8; + *samp8++ = 0; + *samp8++ = BE_INT(res.i); + *samp8++ = BE_INT(res.i) >> 8; + *samp8++ = BE_INT(res.i) >> 16; + break; case SND_PCM_FORMAT_S32_LE: *samp32++ = LE_INT(res.i); break; |