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Searched refs:volume_db (Results 1 – 4 of 4) sorted by relevance

/components/drivers/usb/cherryusb/class/audio/
A Dusbd_audio.c71 int volume_db = 0; in audio_class_interface_request_handler() local
138 volume_db = volume / 256; in audio_class_interface_request_handler()
140 volume_db = (volume - 0x10000) / 256; in audio_class_interface_request_handler()
147 if (volume_db >= 0) { in audio_class_interface_request_handler()
148 volume = volume_db * 256; in audio_class_interface_request_handler()
150 volume = volume_db * 256 + 0x10000; in audio_class_interface_request_handler()
180 if (volume_db >= 0) { in audio_class_interface_request_handler()
181 volume = volume_db * 256; in audio_class_interface_request_handler()
183 volume = volume_db * 256 + 0x10000; in audio_class_interface_request_handler()
191 volume_db = volume / 256; in audio_class_interface_request_handler()
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A Dusbd_audio.h30 void usbd_audio_set_volume(uint8_t busid, uint8_t ep, uint8_t ch, int volume_db);
A Dusbh_audio.c187 … usbh_audio_set_volume(struct usbh_audio *audio_class, const char *name, uint8_t ch, int volume_db) in usbh_audio_set_volume() argument
201 if ((volume_db > 127) || (volume_db < -127)) { in usbh_audio_set_volume()
288 if (volume_db >= 0) { in usbh_audio_set_volume()
289 volume_hex = volume_db * 256; in usbh_audio_set_volume()
294 volume_hex = volume_db * 256 + 0x10000; in usbh_audio_set_volume()
A Dusbh_audio.h62 …usbh_audio_set_volume(struct usbh_audio *audio_class, const char *name, uint8_t ch, int volume_db);

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