diff options
| author | Zhihong Chen <[email protected]> | 2026-07-24 11:21:14 +0800 |
|---|---|---|
| committer | sakumisu <[email protected]> | 2026-07-24 11:25:27 +0800 |
| commit | 23cb7a3f47e831dbaad6691314a36c1222d236f5 (patch) | |
| tree | 8a436f18cf1dfe15ac58dc8a3ef5bbdf47f9f34e | |
| parent | 5bfaf7e3fc542db6624fc51cceccbb1d92d8706c (diff) | |
[update] audio: add AUDIO_FEEDBACK_TO_BUF_HS_INTERVAL/AUDIO_FEEDBACK_TO_BUF_FS_INTERVAL macros
Signed-off-by: Zhihong Chen <[email protected]>
| -rw-r--r-- | class/audio/usb_audio.h | 34 |
1 files changed, 21 insertions, 13 deletions
diff --git a/class/audio/usb_audio.h b/class/audio/usb_audio.h index 95609765..9c937e66 100644 --- a/class/audio/usb_audio.h +++ b/class/audio/usb_audio.h @@ -1344,19 +1344,27 @@ struct audio_v2_control_range3_param_block { #define AUDIO_SAMPLE_FREQ_4B(frq) (uint8_t)(frq), (uint8_t)((frq >> 8)), \ (uint8_t)((frq >> 16)), (uint8_t)((frq >> 24)) -/* format 10.14 */ -#define AUDIO_FREQ_TO_FEEDBACK_FS(freq) ((freq << 10) / 1000) -#define AUDIO_FEEDBACK_TO_BUF_FS(buf, feedback) \ - buf[0] = ((feedback << 4) & 0xFFU); \ - buf[1] = (((feedback << 4) >> 8U) & 0xFFU); \ - buf[2] = (((feedback << 4) >> 16U) & 0xFFU) +/* FS feedback uses 10.14 samples per audio data service interval. */ +#define AUDIO_FREQ_TO_FEEDBACK_FS(freq) ((uint32_t)(((uint64_t)(freq) << 10U) / 1000U)) +#define AUDIO_FEEDBACK_TO_FREQ_FS(feedback) ((uint32_t)(((uint64_t)(feedback) * 1000U) >> 10U)) +#define AUDIO_FEEDBACK_TO_BUF_FS_INTERVAL(buf, feedback, interval) do { \ + uint32_t audio_feedback_value = (uint32_t)((uint64_t)(feedback) << ((interval) + 3U)); \ + (buf)[0] = (uint8_t)(audio_feedback_value); \ + (buf)[1] = (uint8_t)(audio_feedback_value >> 8U); \ + (buf)[2] = (uint8_t)(audio_feedback_value >> 16U); \ +} while (0) +#define AUDIO_FEEDBACK_TO_BUF_FS(buf, feedback) AUDIO_FEEDBACK_TO_BUF_FS_INTERVAL(buf, feedback, 1U) -/* format 16.16 */ -#define AUDIO_FREQ_TO_FEEDBACK_HS(freq) ((freq << 13) / 1000) -#define AUDIO_FEEDBACK_TO_BUF_HS(buf, feedback) \ - buf[0] = (((feedback & 0x00001FFFu) << 3) & 0xFFu); \ - buf[1] = ((((feedback & 0x00001FFFu) << 3) >> 8) & 0xFFu); \ - buf[2] = (((feedback & 0x01FFE000u) >> 13) & 0xFFu); \ - buf[3] = (((feedback & 0x01FFE000u) >> 21) & 0xFFu) +/* Keep HS feedback in 16.16 samples per microframe, then scale it by the audio data endpoint interval when serialized. */ +#define AUDIO_FREQ_TO_FEEDBACK_HS(freq) ((uint32_t)(((uint64_t)(freq) << 16U) / 8000U)) +#define AUDIO_FEEDBACK_TO_FREQ_HS(feedback) ((uint32_t)(((uint64_t)(feedback) * 8000U) >> 16U)) +#define AUDIO_FEEDBACK_TO_BUF_HS_INTERVAL(buf, feedback, interval) do { \ + uint32_t audio_feedback_value = (uint32_t)((uint64_t)(feedback) << ((interval) - 1U)); \ + (buf)[0] = (uint8_t)(audio_feedback_value); \ + (buf)[1] = (uint8_t)(audio_feedback_value >> 8U); \ + (buf)[2] = (uint8_t)(audio_feedback_value >> 16U); \ + (buf)[3] = (uint8_t)(audio_feedback_value >> 24U); \ +} while (0) +#define AUDIO_FEEDBACK_TO_BUF_HS(buf, feedback) AUDIO_FEEDBACK_TO_BUF_HS_INTERVAL(buf, feedback, 4U) #endif /* USB_AUDIO_H */ |