diff options
| author | sakumisu <[email protected]> | 2022-04-13 11:14:18 +0800 |
|---|---|---|
| committer | sakumisu <[email protected]> | 2022-04-13 11:14:18 +0800 |
| commit | e2c401cebf8976f9400d62b9e6241ce95592e2d1 (patch) | |
| tree | dbec2281569b9d5a2163414fc3e275ba6b742754 | |
| parent | e938e443203fe9f5feaa29844527aabc42b2d391 (diff) | |
add multi sampling rate control template
| -rw-r--r-- | demo/audio_v2_mic_speaker_multichan_template.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/demo/audio_v2_mic_speaker_multichan_template.c b/demo/audio_v2_mic_speaker_multichan_template.c index 6b292907..382a2ba6 100644 --- a/demo/audio_v2_mic_speaker_multichan_template.c +++ b/demo/audio_v2_mic_speaker_multichan_template.c @@ -59,7 +59,7 @@ AUDIO_V2_SIZEOF_AC_FEATURE_UNIT_DESC(IN_CHANNEL_NUM) + \ AUDIO_V2_SIZEOF_AC_OUTPUT_TERMINAL_DESC) -const uint8_t audio_descriptor[] = { +uint8_t audio_descriptor[] = { USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0001, 0x01), USB_CONFIG_DESCRIPTOR_INIT(USB_AUDIO_CONFIG_DESC_SIZ, 0x03, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER), AUDIO_V2_AC_DESCRIPTOR_INIT(0x00, 0x03, AUDIO_AC_SIZ, AUDIO_CATEGORY_UNDEF, 0x00, 0x00), @@ -171,6 +171,18 @@ void usbd_audio_close(uint8_t intf) } } +void usbd_audio_set_sampling_freq(uint8_t entity_id, uint8_t ep_ch, uint32_t sampling_freq) +{ + uint16_t packet_size = ((sampling_freq * 2 * 2) / 1000); + if (entity_id == 1) { + audio_descriptor[18 + USB_AUDIO_CONFIG_DESC_SIZ - AUDIO_V2_AS_DESCRIPTOR_INIT_LEN - 11] = packet_size; + audio_descriptor[18 + USB_AUDIO_CONFIG_DESC_SIZ - AUDIO_V2_AS_DESCRIPTOR_INIT_LEN - 10] = packet_size >> 8; + } else if (entity_id == 5) { + audio_descriptor[18 + USB_AUDIO_CONFIG_DESC_SIZ - 11] = packet_size; + audio_descriptor[18 + USB_AUDIO_CONFIG_DESC_SIZ - 10] = packet_size >> 8; + } +} + static usbd_class_t audio_class; static usbd_interface_t audio_control_intf; static usbd_interface_t audio_stream_intf; |