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rename tud_audio_sof_isr() to tud_audio_feedback_interval_isr()

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- also add interval_log2 to isr callback
- also rename other variables
This commit is contained in:
hathach 2022-05-19 13:44:10 +07:00
parent 20b810d25b
commit 5766c9ac4e
2 changed files with 22 additions and 19 deletions
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37
src/class/audio/audio_device.c
View File

@ -326,8 +326,8 @@ typedef struct
float fb_float_val;
uint32_t fb_param_factor_N;
uint32_t fb_param_factor_D;
uint32_t fb_sample_freq;
uint32_t fb_mclk_freq;
#endif // CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP
#endif // CFG_TUD_AUDIO_ENABLE_EP_OUT
@ -1686,11 +1686,11 @@ static bool audiod_set_interface(uint8_t rhport, tusb_control_request_t const *
if (tu_edpt_dir(ep_addr) == TUSB_DIR_IN && desc_ep->bmAttributes.usage == 1) // Check if usage is explicit data feedback
{
audio->ep_fb = ep_addr;
audio->fb_n_frames = 1 << (desc_ep->bInterval -1);
audio->fb_n_frames = 1U << (desc_ep->bInterval -1); // TODO correctly set USB frame interval for SOF (not micro-frame)
audio->fb_n_frames_shift = desc_ep->bInterval -1;
// Enable SOF interrupt if callback is implemented
if (tud_audio_sof_isr) usbd_sof_enable(rhport, true);
if (tud_audio_feedback_interval_isr) usbd_sof_enable(rhport, true);
// // Invoke callback after ep_out is set
// if (audio->ep_out != 0)
@ -2050,7 +2050,7 @@ uint8_t tud_audio_n_get_fb_n_frames(uint8_t func_id)
#if CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP
static bool set_fb_params(audiod_function_t* audio, uint32_t f_s, uint32_t f_m)
static bool set_fb_params(audiod_function_t* audio, uint32_t sample_freq, uint32_t mclk_freq)
{
// Check if frame interval is within sane limits
// The interval value audio->fb_n_frames was taken from the descriptors within audiod_set_interface()
@ -2058,29 +2058,29 @@ static bool set_fb_params(audiod_function_t* audio, uint32_t f_s, uint32_t f_m)
// n_frames_min is ceil(2^10 * f_s / f_m) for full speed and ceil(2^13 * f_s / f_m) for high speed
// this lower limit ensures the measures feedback value has sufficient precision
uint32_t const k = (TUSB_SPEED_FULL == tud_speed_get()) ? 10 : 13;
if ( (((1UL << k) * f_s / f_m) + 1) > audio->fb_n_frames )
if ( (((1UL << k) * sample_freq / mclk_freq) + 1) > audio->fb_n_frames )
{
TU_LOG1(" UAC2 feedback interval too small\r\n"); TU_BREAKPOINT(); return false;
}
// Check if parameters really allow for a power of two division
if ((f_m % f_s) == 0 && tu_is_power_of_two(f_m / f_s))
if ((mclk_freq % sample_freq) == 0 && tu_is_power_of_two(mclk_freq / sample_freq))
{
audio->fb_compute_method = FEEDBACK_COMPUTE_POWER_OF_2;
audio->fb_power_of_two_val = 16 - audio->fb_n_frames_shift - tu_log2(f_m / f_s);
audio->fb_power_of_two_val = 16 - audio->fb_n_frames_shift - tu_log2(mclk_freq / sample_freq);
}else if ( audio->fb_compute_method == FEEDBACK_COMPUTE_FLOAT)
{
audio->fb_float_val = (float)f_s / f_m * (1UL << (16 - audio->fb_n_frames_shift));
audio->fb_float_val = (float)sample_freq / mclk_freq * (1UL << (16 - audio->fb_n_frames_shift));
}else
{
audio->fb_param_factor_N = f_s;
audio->fb_param_factor_D = f_m;
audio->fb_sample_freq = sample_freq;
audio->fb_mclk_freq = mclk_freq;
}
// Minimal/Maximum value in 16.16 format for full speed (1ms per frame) or high speed (125 us per frame)
uint32_t const frame_div = (TUSB_SPEED_FULL == tud_speed_get()) ? 1000 : 8000;
audio->fb_val_min = (f_s/frame_div - 1) << 16;
audio->fb_val_max = (f_s/frame_div + 1) << 16;
audio->fb_val_min = (sample_freq/frame_div - 1) << 16;
audio->fb_val_max = (sample_freq/frame_div + 1) << 16;
return true;
}
@ -2093,7 +2093,7 @@ uint32_t tud_audio_feedback_update(uint8_t func_id, uint32_t cycles)
switch (audio->fb_compute_method)
{
case FEEDBACK_COMPUTE_POWER_OF_2:
feedback = cycles << audio->fb_power_of_two_val;
feedback = (cycles << audio->fb_power_of_two_val);
break;
case FEEDBACK_COMPUTE_FLOAT:
@ -2102,8 +2102,8 @@ uint32_t tud_audio_feedback_update(uint8_t func_id, uint32_t cycles)
case FEEDBACK_COMPUTE_FIXED:
{
uint64_t fb64 = (((uint64_t) cycles) * audio->fb_param_factor_N) << (16 - audio->fb_n_frames_shift);
feedback = (uint32_t) (fb64 / audio->fb_param_factor_D);
uint64_t fb64 = (((uint64_t) cycles) * audio->fb_sample_freq) << (16 - audio->fb_n_frames_shift);
feedback = (uint32_t) (fb64 / audio->fb_mclk_freq);
}
break;
@ -2142,10 +2142,11 @@ void audiod_sof_isr (uint8_t rhport, uint32_t frame_count)
if (audio->ep_fb != 0)
{
uint32_t const interval = (1UL << audio->fb_n_frames);
// TODO hs need to be adjusted to frame (SOF event is not generated for micro-frame)
uint32_t const interval = (1UL << audio->fb_n_frames_shift);
if ( 0 == (frame_count & (interval-1)) )
{
if(tud_audio_sof_isr) tud_audio_sof_isr(i, frame_count);
if(tud_audio_feedback_interval_isr) tud_audio_feedback_interval_isr(i, frame_count, audio->fb_n_frames_shift);
}
}
}

4
src/class/audio/audio_device.h
View File

@ -503,7 +503,9 @@ uint32_t tud_audio_feedback_update(uint8_t func_id, uint32_t cycles);
// fixed_point : 0 float (default), 1 fixed point (for mcu without FPU)
TU_ATTR_WEAK void tud_audio_feedback_params_cb(uint8_t func_id, uint8_t alt_itf, uint32_t* sample_freq, uint32_t* mclk_freq, uint8_t* fixed_point);
TU_ATTR_WEAK void tud_audio_sof_isr(uint8_t func_id, uint32_t frame);
// Callback in ISR context, invoked periodically according to feedback endpoint bInterval.
// Could be used to compute and update feedback value
TU_ATTR_WEAK void tud_audio_feedback_interval_isr(uint8_t func_id, uint32_t frame_number, uint8_t interval_log2);
#if CFG_TUD_AUDIO_INT_CTR_EPSIZE_IN