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Add callback to to set feedback format correction at runtime.

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This commit is contained in:
HiFiPhile
2024-05-08 23:17:56 +02:00
parent ab539895a5
commit 0e907b49c9
2 changed files with 19 additions and 12 deletions
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8
src/class/audio/audio_device.h
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@@ -193,6 +193,7 @@
#endif
// Enable/disable conversion from 16.16 to 10.14 format on full-speed devices. See tud_audio_n_fb_set().
// Can be override by tud_audio_feedback_format_correction_cb()
#ifndef CFG_TUD_AUDIO_ENABLE_FEEDBACK_FORMAT_CORRECTION
#define CFG_TUD_AUDIO_ENABLE_FEEDBACK_FORMAT_CORRECTION 0 // 0 or 1
#endif
@@ -491,8 +492,8 @@ void tud_audio_fb_done_cb(uint8_t func_id);
// This function is used to provide data rate feedback from an asynchronous sink. Feedback value will be sent at FB endpoint interval till it's changed.
//
// The feedback format is specified to be 16.16 for HS and 10.14 for FS devices (see Universal Serial Bus Specification Revision 2.0 5.12.4.2). By default,
// the choice of format is left to the caller and feedback argument is sent as-is. If CFG_TUD_AUDIO_ENABLE_FEEDBACK_FORMAT_CORRECTION is set
// then tinyusb expects 16.16 format and handles the conversion to 10.14 on FS.
// the choice of format is left to the caller and feedback argument is sent as-is. If CFG_TUD_AUDIO_ENABLE_FEEDBACK_FORMAT_CORRECTION is set or tud_audio_feedback_format_correction_cb()
// return true, then tinyusb expects 16.16 format and handles the conversion to 10.14 on FS.
//
// Note that due to a bug in its USB Audio 2.0 driver, Windows currently requires 16.16 format for _all_ USB 2.0 devices. On Linux and it seems the
// driver can work with either format.
@@ -545,6 +546,9 @@ void tud_audio_feedback_params_cb(uint8_t func_id, uint8_t alt_itf, audio_feedba
// interval_shift: number of bit shift i.e log2(interval) from Feedback endpoint descriptor
TU_ATTR_FAST_FUNC void tud_audio_feedback_interval_isr(uint8_t func_id, uint32_t frame_number, uint8_t interval_shift);
// (Full-Speed only) Callback to set feedback format correction is applied or not,
// default to CFG_TUD_AUDIO_ENABLE_FEEDBACK_FORMAT_CORRECTION if not implemented.
bool tud_audio_feedback_format_correction_cb(uint8_t func_id);
#endif // CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP
#if CFG_TUD_AUDIO_ENABLE_INTERRUPT_EP