openharmony/third_party_alsa-lib
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Updates for the control interface...

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This commit is contained in:
Jaroslav Kysela 1999-06-22 13:18:24 +00:00
parent d00535cc1b
commit 227fe9d226
4 changed files with 19 additions and 2 deletions
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1
include/control.h
View File

@ -38,6 +38,7 @@ int snd_ctl_hw_info(snd_ctl_t *handle, struct snd_ctl_hw_info *info);
int snd_ctl_switch_list(snd_ctl_t *handle, snd_switch_list_t * list);
int snd_ctl_switch_read(snd_ctl_t *handle, snd_switch_t * sw);
int snd_ctl_switch_write(snd_ctl_t *handle, snd_switch_t * sw);
int snd_ctl_hwdep_info(snd_ctl_t *handle, int dev, snd_hwdep_info_t * info);
int snd_ctl_pcm_info(snd_ctl_t *handle, int dev, snd_pcm_info_t * info);
int snd_ctl_pcm_playback_info(snd_ctl_t *handle, int dev, snd_pcm_playback_info_t * info);
int snd_ctl_pcm_capture_info(snd_ctl_t *handle, int dev, snd_pcm_capture_info_t * info);

2
src/Makefile.am
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@ -5,7 +5,7 @@ libasound_la_SOURCES = error.c
libasound_la_LIBADD = control/libcontrol.la mixer/libmixer.la pcm/libpcm.la \
rawmidi/librawmidi.la timer/libtimer.la seq/libseq.la \
instr/libinstr.la
libasound_la_LDFLAGS = -version-info 3:1:3
libasound_la_LDFLAGS = -version-info 4:0:4
control/libcontrol.la:
$(MAKE) -C control libcontrol.la

16
src/control/control.c
View File

@ -29,7 +29,7 @@
#include "asoundlib.h"
#define SND_FILE_CONTROL "/dev/snd/controlC%i"
#define SND_CTL_VERSION_MAX SND_PROTOCOL_VERSION( 1, 0, 0 )
#define SND_CTL_VERSION_MAX SND_PROTOCOL_VERSION(2, 0, 0)
struct snd_ctl {
int card;
@ -143,6 +143,20 @@ int snd_ctl_switch_write(snd_ctl_t *handle, snd_switch_t *sw)
return 0;
}
int snd_ctl_hwdep_info(snd_ctl_t *handle, int dev, snd_hwdep_info_t * info)
{
snd_ctl_t *ctl;
ctl = handle;
if (!ctl || !info || dev < 0)
return -EINVAL;
if (ioctl(ctl->fd, SND_CTL_IOCTL_HWDEP_DEVICE, &dev) < 0)
return -errno;
if (ioctl(ctl->fd, SND_CTL_IOCTL_HWDEP_INFO, info) < 0)
return -errno;
return 0;
}
int snd_ctl_pcm_info(snd_ctl_t *handle, int dev, snd_pcm_info_t * info)
{
snd_ctl_t *ctl;

2
test/control.c
View File

@ -47,6 +47,8 @@ int main(void)
printf(" flags - 0x%x\n", pcminfo.flags);
printf(" id - '%s'\n", pcminfo.id);
printf(" name - '%s'\n", pcminfo.name);
printf(" playback - %i\n", pcminfo.playback);
printf(" capture - %i\n", pcminfo.capture);
}
for (idx1 = 0; idx1 < info.mixerdevs; idx1++) {
printf("MIXER info, device #%i:\n", idx1);