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Add tud_audio_set_itf_close_EP_cb()
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Feedback can be specified by the user code and will be
sent at feedback endpoint specified interval.
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This allow to build with single FIFO for devices with multiple channels.
Having just one FIFO greatly reduces time needed to feed endpoint.
This change also allows to have one FIFO with 24 bit samples that
is not rounded up to 32 bit elements.
CFG_TUD_AUDIO_RX_ITEMSIZE and CFG_TUD_AUDIO_TX_ITEMSIZE can be manually
defined. This allows to use FIFO more efficiently when 24 bits samples
are already using 3 bytes, in this case there is no need to put them
into FIFO one by one.
For 8, 16, 32 bits samples size efficient FIFO access is always used
when single FIFO is selected.
This also changes FIFO element size to 1, FIFO usage was confusing
in some place it treated content as byte base in other it looked like
ITEM size is to be used. Also bufsize that in most (maybe all) cases
was really meaning item count.
bufsize now mean buffer size in bytes so there is no confusion.
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void function used TU_VERIFY in a way that returned bool value.
It would not compile.
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Function was not checking buffer size correctly due missing parenthesis.
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Function prototype did not have return type specified by mistake.
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Some API uses interface number as argument, some wants to have
rhport.
To accommodate need of rhport for functions that don't have it
rhport can be extracted from interface data.
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This is helpful if you have already encoded audio data and want an
efficient way to send it. However, this approach is NOT THREADSAFE so
far and works realiably ONLY IF tud_audio_n_write_ep_in_buffer() is NOT
called form an interrupt!
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b_bytes_copied was pointer with NULL value instead of
plain variable.
NULL pointer was passed to audio_tx_done_cb() and dereference
as well.
Now variable is not a pointer.
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Buffer for TX and RX FIFO was not taking into account
size of element leading to out of bound access.
audio_tx_done_type_I_pcm_ff_cb() reported copied bytes was not returning
correct value number if channels was omitted in computation.
Transfer size calculation uses simpler arithmetic.
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In several place p_desc_end calculation was not taking into account
that starting pointer (_audiod_itf[idxDriver].p_desc) was pointing
past interface association descriptor.
It would result in accessing random memory.
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Setup a test example - UNTESTED!
Missing: Start transmitting audio data in set_interface.
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