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Merge pull request #285 from xross/fix/284

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Decouple tidies
This commit is contained in:
Ross Owen
2022-09-08 15:53:11 +01:00
committed by GitHub
parent b982632bdb 9f105dd48a
commit d6bc7325c4
1 changed files with 21 additions and 34 deletions
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55
lib_xua/src/core/buffer/decouple/decouple.xc
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@@ -14,12 +14,11 @@
#include "usbaudio20.h" /* Defines from the USB Audio 2.0 Specifications */ #include "usbaudio20.h" /* Defines from the USB Audio 2.0 Specifications */
#endif #endif
#if( 0 < HID_CONTROLS ) #if (HID_CONTROLS)
#include "user_hid.h" #include "user_hid.h"
#endif #endif
#define MAX(x,y) ((x)>(y) ? (x) : (y)) #define MAX(x,y) ((x)>(y) ? (x) : (y))
/* TODO use SLOTSIZE to potentially save memory */ /* TODO use SLOTSIZE to potentially save memory */
/* Note we could improve on this, for one subslot is set to 4 */ /* Note we could improve on this, for one subslot is set to 4 */
/* The *4 is conversion to bytes, note we're assuming a slotsize of 4 here whic is potentially as waste */ /* The *4 is conversion to bytes, note we're assuming a slotsize of 4 here whic is potentially as waste */
@@ -65,13 +64,22 @@ unsigned int multIn[NUM_USB_CHAN_IN + 1];
static xc_ptr p_multIn; static xc_ptr p_multIn;
#endif #endif
/* Number of channels to/from the USB bus - initialised to HS Audio 2.0 */ #if (AUDIO_CLASS == 2)
#if (AUDIO_CLASS == 1) int g_numUsbChan_In = NUM_USB_CHAN_IN; /* Number of channels to/from the USB bus - initialised to HS for UAC2.0 */
unsigned g_numUsbChan_In = NUM_USB_CHAN_IN_FS; int g_numUsbChan_Out = NUM_USB_CHAN_OUT;
unsigned g_numUsbChan_Out = NUM_USB_CHAN_OUT_FS; int g_curSubSlot_Out = HS_STREAM_FORMAT_OUTPUT_1_SUBSLOT_BYTES;
int g_curSubSlot_In = HS_STREAM_FORMAT_INPUT_1_SUBSLOT_BYTES;
int sampsToWrite = DEFAULT_FREQ/8000; /* HS assumed here. Expect to be junked during a overflow before stream start */
int totalSampsToWrite = DEFAULT_FREQ/8000;
int g_maxPacketSize = MAX_DEVICE_AUD_PACKET_SIZE_IN_HS; /* IN packet size. Init to something sensible, but expect to be re-set before stream start */
#else #else
unsigned g_numUsbChan_In = NUM_USB_CHAN_IN; int g_numUsbChan_In = NUM_USB_CHAN_IN_FS; /* Number of channels to/from the USB bus - initialised to FS for UAC1.0 */
unsigned g_numUsbChan_Out = NUM_USB_CHAN_OUT; int g_numUsbChan_Out = NUM_USB_CHAN_OUT_FS;
int g_curSubSlot_Out = FS_STREAM_FORMAT_OUTPUT_1_SUBSLOT_BYTES;
int g_curSubSlot_In = FS_STREAM_FORMAT_INPUT_1_SUBSLOT_BYTES;
int sampsToWrite = DEFAULT_FREQ/1000; /* FS assumed here. Expect to be junked during a overflow before stream start */
int totalSampsToWrite = DEFAULT_FREQ/1000;
int g_maxPacketSize = MAX_DEVICE_AUD_PACKET_SIZE_IN_FS; /* IN packet size. Init to something sensible, but expect to be re-set before stream start */
#endif #endif
/* Circular audio buffers */ /* Circular audio buffers */
@@ -116,13 +124,7 @@ xc_ptr g_aud_to_host_wrptr;
xc_ptr g_aud_to_host_dptr; xc_ptr g_aud_to_host_dptr;
xc_ptr g_aud_to_host_rdptr; xc_ptr g_aud_to_host_rdptr;
xc_ptr g_aud_to_host_zeros; xc_ptr g_aud_to_host_zeros;
#if (AUDIO_CLASS == 2)
int sampsToWrite = DEFAULT_FREQ/8000; /* HS assumed here. Expect to be junked during a overflow before stream start */
int totalSampsToWrite = DEFAULT_FREQ/8000;
#else
int sampsToWrite = DEFAULT_FREQ/1000; /* HS assumed here. Expect to be junked during a overflow before stream start */
int totalSampsToWrite = DEFAULT_FREQ/1000;
#endif
int aud_data_remaining_to_device = 0; int aud_data_remaining_to_device = 0;
/* Audio over/under flow flags */ /* Audio over/under flow flags */
@@ -139,22 +141,7 @@ unsigned unpackData = 0;
unsigned packState = 0; unsigned packState = 0;
unsigned packData = 0; unsigned packData = 0;
/* Default to something sensible but the following are setup at stream start (unless UAC1 only..) */ /* Default to something sensible but the following are setup at stream start (unless UAC1 only..) */
#if (AUDIO_CLASS == 2)
unsigned g_curSubSlot_Out = HS_STREAM_FORMAT_OUTPUT_1_SUBSLOT_BYTES;
unsigned g_curSubSlot_In = HS_STREAM_FORMAT_INPUT_1_SUBSLOT_BYTES;
#else
unsigned g_curSubSlot_Out = FS_STREAM_FORMAT_OUTPUT_1_SUBSLOT_BYTES;
unsigned g_curSubSlot_In = FS_STREAM_FORMAT_INPUT_1_SUBSLOT_BYTES;
#endif
/* IN packet size. Init to something sensible, but expect to be re-set before stream start */
#if (AUDIO_CLASS==2)
int g_maxPacketSize = MAX_DEVICE_AUD_PACKET_SIZE_IN_HS;
#else
int g_maxPacketSize = MAX_DEVICE_AUD_PACKET_SIZE_IN_FS;
#endif
#pragma select handler #pragma select handler
#pragma unsafe arrays #pragma unsafe arrays
@@ -470,7 +457,7 @@ __builtin_unreachable();
packState = 0; packState = 0;
/* Write last packet length into FIFO */ /* Write last packet length into FIFO */
unsigned datasize = totalSampsToWrite * g_curSubSlot_In * g_numUsbChan_In; int datasize = totalSampsToWrite * g_curSubSlot_In * g_numUsbChan_In;
write_via_xc_ptr(g_aud_to_host_wrptr, datasize); write_via_xc_ptr(g_aud_to_host_wrptr, datasize);
@@ -520,11 +507,11 @@ __builtin_unreachable();
/* In pipe has filled its buffer - we need to overflow /* In pipe has filled its buffer - we need to overflow
* Accept the packet, and throw away the oldest in the buffer */ * Accept the packet, and throw away the oldest in the buffer */
unsigned sampFreq; int sampFreq;
GET_SHARED_GLOBAL(sampFreq, g_freqChange_sampFreq); GET_SHARED_GLOBAL(sampFreq, g_freqChange_sampFreq);
int min, mid, max; int min, mid, max;
GetADCCounts(sampFreq, min, mid, max); GetADCCounts(sampFreq, min, mid, max);
unsigned max_pkt_size = ((max * g_curSubSlot_In * g_numUsbChan_In + 3) & ~0x3) + 4; int max_pkt_size = ((max * g_curSubSlot_In * g_numUsbChan_In + 3) & ~0x3) + 4;
/* Keep throwing away packets until buffer contains two packets */ /* Keep throwing away packets until buffer contains two packets */
do do
@@ -532,7 +519,7 @@ __builtin_unreachable();
unsigned rdPtr; unsigned rdPtr;
/* Read length of packet in buffer at read pointer */ /* Read length of packet in buffer at read pointer */
unsigned datalength; int datalength;
GET_SHARED_GLOBAL(rdPtr, g_aud_to_host_rdptr); GET_SHARED_GLOBAL(rdPtr, g_aud_to_host_rdptr);
asm volatile("ldw %0, %1[0]":"=r"(datalength):"r"(rdPtr)); asm volatile("ldw %0, %1[0]":"=r"(datalength):"r"(rdPtr));