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Kernel: Implement ioctl for the SB16 to change sample rate

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Two new ioctl requests are used to get and set the sample rate of the
sound card. The SB16 device keeps track of the sample rate separately,
because I don't want to figure out how to read the sample rate from the
device; it's easier that way.

The soundcard write doesn't set the sample rate to 44100 Hz every time
anymore, as we want to change it externally.
This commit is contained in:
kleines Filmröllchen 2021-08-19 00:04:03 +02:00 • committed by Ali Mohammad Pur
parent 2c9afaf5ac
commit d0ceaa24a6
3 changed files with 34 additions and 2 deletions
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4
Userland/Libraries/LibC/sys/ioctl_numbers.h
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@ -87,6 +87,8 @@ enum IOCtlNumber {
KCOV_SETBUFSIZE,
KCOV_ENABLE,
KCOV_DISABLE,
SOUNDCARD_IOCTL_SET_SAMPLE_RATE,
SOUNDCARD_IOCTL_GET_SAMPLE_RATE
};
#define TIOCGPGRP TIOCGPGRP
@ -128,3 +130,5 @@ enum IOCtlNumber {
#define FIBMAP FIBMAP
#define FIONBIO FIONBIO
#define FIONREAD FIONREAD
#define SOUNDCARD_IOCTL_SET_SAMPLE_RATE SOUNDCARD_IOCTL_SET_SAMPLE_RATE
#define SOUNDCARD_IOCTL_GET_SAMPLE_RATE SOUNDCARD_IOCTL_GET_SAMPLE_RATE