mirror of
https://github.com/alsa-project/alsa-lib.git
synced 2025-10-29 05:40:25 -04:00
Changed the switch interface.
Every switches are accessible via one ioctl.
This commit is contained in:
Jaroslav Kysela
parent
ea8a84d3c1
commit
4931c0c7e2
5 changed files with 41 additions and 314 deletions
123
test/switches.c
123
test/switches.c
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@ -4,10 +4,6 @@
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#include <errno.h>
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#include "../include/asoundlib.h"
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static snd_ctl_t *ctl_handle;
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static int sw_interface;
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static int sw_device;
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const char *get_type(unsigned int type)
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{
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switch (type) {
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@ -30,87 +26,23 @@ const char *get_type(unsigned int type)
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}
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}
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const char *get_interface(void)
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const char *get_interface(int iface)
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{
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switch (sw_interface) {
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case 0:
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switch (iface) {
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case SND_CTL_IFACE_CONTROL:
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return "control";
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case 1:
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case SND_CTL_IFACE_MIXER:
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return "mixer";
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case 2:
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return "PCM playback";
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case 3:
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return "PCM capture";
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case 4:
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return "rawmidi output";
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case 5:
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return "rawmidi input";
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case SND_CTL_IFACE_PCM:
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return "pcm";
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case SND_CTL_IFACE_RAWMIDI:
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return "rawmidi";
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default:
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return "unknown";
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}
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}
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int switch_list(snd_switch_list_t *list)
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{
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switch (sw_interface) {
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case 0:
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return snd_ctl_switch_list(ctl_handle, list);
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case 1:
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return snd_ctl_mixer_switch_list(ctl_handle, sw_device, list);
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case 2:
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return snd_ctl_pcm_playback_switch_list(ctl_handle, sw_device, list);
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case 3:
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return snd_ctl_pcm_capture_switch_list(ctl_handle, sw_device, list);
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case 4:
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return snd_ctl_rawmidi_output_switch_list(ctl_handle, sw_device, list);
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case 5:
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return snd_ctl_rawmidi_input_switch_list(ctl_handle, sw_device, list);
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default:
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return -ENOLINK;
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}
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}
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int switch_read(snd_switch_t *sw)
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{
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switch (sw_interface) {
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case 0:
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return snd_ctl_switch_read(ctl_handle, sw);
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case 1:
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return snd_ctl_mixer_switch_read(ctl_handle, sw_device, sw);
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case 2:
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return snd_ctl_pcm_playback_switch_read(ctl_handle, sw_device, sw);
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case 3:
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return snd_ctl_pcm_capture_switch_write(ctl_handle, sw_device, sw);
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case 4:
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return snd_ctl_rawmidi_output_switch_read(ctl_handle, sw_device, sw);
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case 5:
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return snd_ctl_rawmidi_input_switch_read(ctl_handle, sw_device, sw);
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default:
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return -ENOLINK;
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}
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}
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int switch_write(snd_switch_t *sw)
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{
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switch (sw_interface) {
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case 0:
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return snd_ctl_switch_write(ctl_handle, sw);
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case 1:
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return snd_ctl_mixer_switch_write(ctl_handle, sw_device, sw);
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case 2:
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return snd_ctl_pcm_playback_switch_write(ctl_handle, sw_device, sw);
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case 3:
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return snd_ctl_pcm_capture_switch_write(ctl_handle, sw_device, sw);
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case 4:
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return snd_ctl_rawmidi_output_switch_write(ctl_handle, sw_device, sw);
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case 5:
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return snd_ctl_rawmidi_input_switch_write(ctl_handle, sw_device, sw);
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default:
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return -ENOLINK;
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}
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}
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void print_switch(char *space, char *prefix, snd_switch_t *sw)
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void print_switch(snd_ctl_t *ctl_handle, char *space, char *prefix, snd_switch_t *sw)
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{
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snd_switch_t sw1;
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int low, err;
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@ -121,8 +53,8 @@ void print_switch(char *space, char *prefix, snd_switch_t *sw)
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memcpy(&sw1, sw, sizeof(sw1));
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sw1.type = SND_SW_TYPE_LIST_ITEM;
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sw1.low = sw1.high = low;
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if ((err = switch_read(&sw1)) < 0) {
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printf("Switch list item read failed for %s interface and device %i: %s\n", get_interface(), sw_device, snd_strerror(err));
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if ((err = snd_ctl_switch_read(ctl_handle, &sw1)) < 0) {
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printf("Switch list item read failed for %s interface and device %i channel %i: %s\n", get_interface(sw->iface), sw->device, sw->channel, snd_strerror(err));
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continue;
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}
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printf(" %s%s : '%s' [%s] {%s}\n", space, prefix, sw1.name, get_type(sw1.type), sw1.value.item);
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@ -130,17 +62,18 @@ void print_switch(char *space, char *prefix, snd_switch_t *sw)
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}
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}
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void process(char *space, char *prefix, int interface, int device)
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void process(snd_ctl_t *ctl_handle, char *space, char *prefix, int iface, int device, int channel)
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{
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snd_switch_list_t list;
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snd_switch_t sw;
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int err, idx;
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sw_interface = interface;
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sw_device = device;
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bzero(&list, sizeof(list));
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if ((err = switch_list(&list)) < 0) {
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printf("Switch listing failed for the %s interface and the device %i: %s\n", get_interface(), device, snd_strerror(err));
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list.iface = iface;
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list.device = device;
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list.channel = channel;
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if ((err = snd_ctl_switch_list(ctl_handle, &list)) < 0) {
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printf("Switch listing failed for the %s interface and the device %i: %s\n", get_interface(iface), device, snd_strerror(err));
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return;
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}
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if (list.switches_over <= 0)
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@ -152,24 +85,28 @@ void process(char *space, char *prefix, int interface, int device)
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printf("No enough memory... (%i switches)\n", list.switches_size);
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return;
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}
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if ((err = switch_list(&list)) < 0) {
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printf("Second switch listing failed for the %s interface and the device %i: %s\n", get_interface(), device, snd_strerror(err));
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if ((err = snd_ctl_switch_list(ctl_handle, &list)) < 0) {
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printf("Second switch listing failed for the %s interface and the device %i: %s\n", get_interface(iface), device, snd_strerror(err));
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return;
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}
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for (idx = 0; idx < list.switches; idx++) {
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bzero(&sw, sizeof(sw));
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sw.iface = iface;
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sw.device = device;
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sw.channel = channel;
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strncpy(sw.name, list.pswitches[idx].name, sizeof(sw.name));
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if ((err = switch_read(&sw)) < 0) {
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printf("Switch read failed for the %s interface and the device %i: %s\n", get_interface(), device, snd_strerror(err));
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if ((err = snd_ctl_switch_read(ctl_handle, &sw)) < 0) {
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printf("Switch read failed for the %s interface and the device %i channel %i: %s\n", get_interface(iface), device, channel, snd_strerror(err));
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continue;
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}
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print_switch(space, prefix, &sw);
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print_switch(ctl_handle, space, prefix, &sw);
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}
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free(list.pswitches);
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}
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int main(void)
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{
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snd_ctl_t *ctl_handle;
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int cards, card, err, idx;
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snd_ctl_hw_info_t info;
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@ -190,12 +127,12 @@ int main(void)
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continue;
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}
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printf("CARD %i:\n", card);
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process(" ", "Control", 0, 0);
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process(ctl_handle, " ", "Control", SND_CTL_IFACE_CONTROL, 0, 0);
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for (idx = 0; idx < info.mixerdevs; idx++)
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process(" ", "Mixer", 1, idx);
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process(ctl_handle, " ", "Mixer", SND_CTL_IFACE_MIXER, idx, 0);
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for (idx = 0; idx < info.pcmdevs; idx++) {
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process(" ", "PCM playback", 2, idx);
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process(" ", "PCM capture", 3, idx);
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process(ctl_handle, " ", "PCM playback", SND_CTL_IFACE_PCM, idx, SND_PCM_CHANNEL_PLAYBACK);
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process(ctl_handle, " ", "PCM capture", SND_CTL_IFACE_PCM, idx, SND_PCM_CHANNEL_CAPTURE);
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}
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snd_ctl_close(ctl_handle);
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}
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