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add volume and mute control

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This commit is contained in:
sakumisu
2023-03-22 14:58:07 +08:00
parent 9c5af19cb1
commit e9ad3bdc21
2 changed files with 64 additions and 2 deletions
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62
class/audio/usbh_audio.c
View File

@@ -159,9 +159,69 @@ int usbh_audio_close(struct usbh_audio *audio_class, const char *name)
setup->wLength = 0;
ret = usbh_control_transfer(audio_class->hport->ep0, setup, NULL);
if (ret < 0) {
return ret;
}
int usbh_audio_set_volume(struct usbh_audio *audio_class, const char *name, uint8_t ch, uint8_t volume)
{
struct usb_setup_packet *setup = audio_class->hport->setup;
int ret;
uint8_t intf = 0xff;
uint8_t feature_id = 0xff;
uint16_t volume_hex;
for (size_t i = 0; i < audio_class->module_num; i++) {
if (strcmp(name, audio_class->module[i].name) == 0) {
intf = audio_class->ctrl_intf;
feature_id = audio_class->module[i].feature_unit_id;
}
}
if (intf == 0xff) {
return -ENODEV;
}
setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_CLASS | USB_REQUEST_RECIPIENT_INTERFACE;
setup->bRequest = AUDIO_REQUEST_SET_CUR;
setup->wValue = (AUDIO_FU_CONTROL_VOLUME << 8) | ch;
setup->wIndex = (feature_id << 8) | intf;
setup->wLength = 2;
volume_hex = -0xDB00 / 100 * volume + 0xdb00;
memcpy(g_audio_buf, &volume_hex, 2);
ret = usbh_control_transfer(audio_class->hport->ep0, setup, NULL);
return ret;
}
int usbh_audio_set_mute(struct usbh_audio *audio_class, const char *name, uint8_t ch, bool mute)
{
struct usb_setup_packet *setup = audio_class->hport->setup;
int ret;
uint8_t intf = 0xff;
uint8_t feature_id = 0xff;
for (size_t i = 0; i < audio_class->module_num; i++) {
if (strcmp(name, audio_class->module[i].name) == 0) {
intf = audio_class->ctrl_intf;
feature_id = audio_class->module[i].feature_unit_id;
}
}
if (intf == 0xff) {
return -ENODEV;
}
setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_CLASS | USB_REQUEST_RECIPIENT_INTERFACE;
setup->bRequest = AUDIO_REQUEST_SET_CUR;
setup->wValue = (AUDIO_FU_CONTROL_MUTE << 8) | ch;
setup->wIndex = (feature_id << 8) | intf;
setup->wLength = 1;
memcpy(g_audio_buf, &mute, 1);
ret = usbh_control_transfer(audio_class->hport->ep0, setup, g_audio_buf);
return ret;
}

2
class/audio/usbh_audio.h
View File

@@ -61,6 +61,8 @@ extern "C" {
int usbh_audio_open(struct usbh_audio *audio_class, const char *name, uint32_t samp_freq);
int usbh_audio_close(struct usbh_audio *audio_class, const char *name);
int usbh_audio_set_volume(struct usbh_audio *audio_class, const char *name, uint8_t ch, uint8_t volume);
int usbh_audio_set_mute(struct usbh_audio *audio_class, const char *name, uint8_t ch, bool mute);
void usbh_audio_run(struct usbh_audio *audio_class);
void usbh_audio_stop(struct usbh_audio *audio_class);