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Light tidy of single thread EP buffer

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This commit is contained in:
Ed Clarke
2018-10-29 11:11:06 +00:00
parent 4b73f17997
commit eaf190b485
4 changed files with 22 additions and 87 deletions
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7
examples/xua_lite_example/src/app_xua_lite.xc
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@@ -103,13 +103,8 @@ int main()
c_sof, epTypeTableOut, epTypeTableIn,
null, null, -1 ,
(AUDIO_CLASS == 1) ? XUD_SPEED_FS : XUD_SPEED_HS, XUD_PWR_BUS);
// Endpoint 0 core from lib_xua
// Note, since we are not using many features we pass in null for quite a few params..
// XUA_Endpoint0(c_ep_out[0], c_ep_in[0], c_aud_ctl, null, null, null, null);
//XUA_Endpoint0_select(c_ep_out[0], c_ep_in[0], c_aud_ctl, null, null, null, null);
// Buffering cores - handles audio data to/from EP's and gives/gets data to/from the audio I/O core
// Buffering cores - handles audio and control data to/from EP's and gives/gets data to/from the audio I/O core
XUA_Buffer_lite(c_ep_out[0], c_ep_in[0], c_ep_out[1], c_ep_in[1], c_ep_in[2], c_sof, p_for_mclk_count, c_audio);
}
}//Tile[1] par

3
examples/xua_lite_example/src/audio_hub.xc
View File

@@ -16,7 +16,7 @@ void AudioHub(server i2s_frame_callback_if i2s,
int32_t samples_out[NUM_USB_CHAN_OUT] = {0};
int32_t samples_in[NUM_USB_CHAN_IN] = {0};
// Set reset DAC
// Reset DAC
dac_reset.output(0);
delay_milliseconds(1);
dac_reset.output(1);
@@ -43,6 +43,7 @@ void AudioHub(server i2s_frame_callback_if i2s,
restart = I2S_NO_RESTART; // Keep on looping
for (int i = 0; i < NUM_USB_CHAN_IN; i++) c_audio_hub <: samples_in[i];
for (int i = 0; i < NUM_USB_CHAN_OUT; i++) c_audio_hub :> samples_out[i];
delay_microseconds(5); //Test backpressure tolerance
break;
}
}

94
examples/xua_lite_example/src/xua_buffer.xc
View File

@@ -180,22 +180,16 @@ void XUA_Buffer_lite(chanend c_ep0_out, chanend c_ep0_in, chanend c_aud_out, cha
unsigned char buffer_aud_out[OUT_AUDIO_BUFFER_SIZE_BYTES];
unsigned char buffer_aud_in[IN_AUDIO_BUFFER_SIZE_BYTES];
#define FEEDBACK_BUFF_SIZE 4
unsigned char buffer_feedback[FEEDBACK_BUFF_SIZE];
unsigned int fb_clocks[1] = {0};
unsigned in_subslot_size = (AUDIO_CLASS == 1) ? FS_STREAM_FORMAT_INPUT_1_SUBSLOT_BYTES : HS_STREAM_FORMAT_INPUT_1_SUBSLOT_BYTES;
unsigned out_subslot_size = (AUDIO_CLASS == 1) ? FS_STREAM_FORMAT_OUTPUT_1_SUBSLOT_BYTES : HS_STREAM_FORMAT_OUTPUT_1_SUBSLOT_BYTES;
unsigned in_num_chan = NUM_USB_CHAN_IN;
unsigned out_num_chan = NUM_USB_CHAN_OUT;
//Asynch feedback calculation
unsigned sof_count = 0;
unsigned mclk_port_counter_old = 0;
long long feedback_value = 0;
unsigned mod_from_last_time = 0;
const unsigned mclk_hz = MCLK_48;
unsigned int fb_clocks[1] = {0};
XUD_ep ep_aud_out = XUD_InitEp(c_aud_out);
@@ -203,103 +197,55 @@ void XUA_Buffer_lite(chanend c_ep0_out, chanend c_ep0_in, chanend c_aud_out, cha
XUD_ep ep_aud_in = XUD_InitEp(c_aud_in);
unsigned num_samples_received_from_host = 0;
unsigned outstanding_samples_to_host = 0;
unsigned num_samples_to_send_to_host = 0;
XUD_SetReady_OutPtr(ep_aud_out, (unsigned)buffer_aud_out);
XUD_SetReady_InPtr(ep_aud_in, (unsigned)buffer_aud_in, num_samples_to_send_to_host);
XUD_SetReady_InPtr(ep_feedback, (unsigned)buffer_feedback, FEEDBACK_BUFF_SIZE);
int loopback_samples[MAX_OUT_SAMPLES_PER_SOF_PERIOD] = {0};
int32_t samples_out[NUM_USB_CHAN_OUT] = {0};
int32_t samples_in[NUM_USB_CHAN_IN] = {0};
#if SINGLE_XUA_EP_BUFFER
#define c_audioControl null
#define dfuInterface null
XUA_Endpoint0_lite_init(c_ep0_out, c_ep0_in, c_audioControl, null, null, null, dfuInterface);
unsigned char sbuffer[120];
USB_SetupPacket_t sp;
XUD_SetReady_Out(ep0_out, sbuffer);
unsigned char sbuffer[120]; //Raw buffer for EP0 data
USB_SetupPacket_t sp; //Parsed setup packet from EP0
unsigned input_interface_num = 0;
unsigned output_interface_num = 0;
#endif
//Enable all EPs
XUD_SetReady_OutPtr(ep_aud_out, (unsigned)buffer_aud_out);
XUD_SetReady_InPtr(ep_aud_in, (unsigned)buffer_aud_in, num_samples_to_send_to_host);
XUD_SetReady_InPtr(ep_feedback, (unsigned)fb_clocks, (AUDIO_CLASS == 2) ? 4 : 3);
XUD_SetReady_Out(ep0_out, sbuffer);
//Unsafe to allow us to use fifo API
unsafe{
int host_to_device_fifo_storage[MAX_OUT_SAMPLES_PER_SOF_PERIOD * 2];
mem_fifo_t host_to_device_fifo = {sizeof(host_to_device_fifo_storage)/sizeof(host_to_device_fifo_storage[0])
, host_to_device_fifo_storage, 0, 0};
mem_fifo_t host_to_device_fifo = {sizeof(host_to_device_fifo_storage)/sizeof(host_to_device_fifo_storage[0]), host_to_device_fifo_storage, 0, 0};
volatile mem_fifo_t * unsafe host_to_device_fifo_ptr = &host_to_device_fifo;
//XUD trasnaction variables
XUD_Result_t result;
unsigned length = 0;
unsigned tmp; //For select channel input by ref
while(1){
select{
#if !SINGLE_XUA_EP_BUFFER
//Handle control path from EP0
case testct_byref(c_aud_ctl, tmp):
//ignore tmp as is used for reboot signalling only
unsigned cmd = inuint(c_aud_ctl);
debug_printf("c_aud_ctl cmd: %d\n", cmd);
if(cmd == SET_SAMPLE_FREQ){
unsigned receivedSampleFreq = inuint(c_aud_ctl);
debug_printf("SET_SAMPLE_FREQ: %d\n", receivedSampleFreq);
sampleFreq = receivedSampleFreq;
}
else if(cmd == SET_STREAM_FORMAT_IN){
unsigned formatChange_DataFormat = inuint(c_aud_ctl);
unsigned formatChange_NumChans = inuint(c_aud_ctl);
unsigned formatChange_SubSlot = inuint(c_aud_ctl);
unsigned formatChange_SampRes = inuint(c_aud_ctl);
debug_printf("SET_STREAM_FORMAT_IN: %d %d %d %d\n", formatChange_DataFormat, formatChange_NumChans, formatChange_SubSlot, formatChange_SampRes);
in_subslot_size = formatChange_SubSlot;
in_num_chan = formatChange_NumChans;
}
else if (cmd == SET_STREAM_FORMAT_OUT)
{
XUD_BusSpeed_t busSpeed;
unsigned formatChange_DataFormat = inuint(c_aud_ctl);
unsigned formatChange_NumChans = inuint(c_aud_ctl);
unsigned formatChange_SubSlot = inuint(c_aud_ctl);
unsigned formatChange_SampRes = inuint(c_aud_ctl);
debug_printf("SET_STREAM_FORMAT_OUT: %d %d %d %d\n", formatChange_DataFormat, formatChange_NumChans, formatChange_SubSlot, formatChange_SampRes);
out_subslot_size = formatChange_SubSlot;
out_num_chan = formatChange_NumChans;
}
else{
debug_printf("Unhandled command\n");
}
outct(c_aud_ctl, XS1_CT_END);
break;
#endif
#if SINGLE_XUA_EP_BUFFER
//Handle EP0 requests
case XUD_GetSetupData_Select(c_ep0_out, ep0_out, length, result):
if (result == XUD_RES_OKAY)
{
/* Parse data buffer end populate SetupPacket struct */
USB_ParseSetupPacket(sbuffer, sp);
}
debug_printf("ep0, result: %d, length: %d\n", result, length); //-1 reset, 0 ok, 1 error
//debug_printf("ep0, result: %d, length: %d\n", result, length); //-1 reset, 0 ok, 1 error
XUA_Endpoint0_lite_loop(result, sp, c_ep0_out, c_ep0_in, c_audioControl, null/*mix*/, null/*clk*/, null/*EA*/, dfuInterface, &input_interface_num, &output_interface_num);
XUD_SetReady_Out(ep0_out, sbuffer);
break;
#endif
//SOF
//SOF handling
case inuint_byref(c_sof, tmp):
unsigned mclk_port_counter = 0;
asm volatile(" getts %0, res[%1]" : "=r" (mclk_port_counter) : "r" (p_for_mclk_count));
@@ -311,13 +257,11 @@ void XUA_Buffer_lite(chanend c_ep0_out, chanend c_ep0_in, chanend c_aud_out, cha
case XUD_GetData_Select(c_aud_out, ep_aud_out, length, result):
num_samples_received_from_host = length / out_subslot_size;
//debug_printf("out samps: %d\n", num_samples_received_from_host);
outstanding_samples_to_host += num_samples_received_from_host;
unpack_buff_to_samples(buffer_aud_out, num_samples_received_from_host, out_subslot_size, loopback_samples);
fifo_ret_t ret = fifo_block_push(host_to_device_fifo_ptr, loopback_samples, num_samples_received_from_host);
if (ret != FIFO_SUCCESS) debug_printf("full\n");
if (ret != FIFO_SUCCESS) debug_printf("host_to_device_fifo full\n");
num_samples_to_send_to_host = num_samples_received_from_host;
//Mark EP as ready for next frame from host
@@ -326,23 +270,21 @@ void XUA_Buffer_lite(chanend c_ep0_out, chanend c_ep0_in, chanend c_aud_out, cha
//Send asynch explicit feedback value
case XUD_SetData_Select(c_feedback, ep_feedback, result):
//debug_printf("ep_feedback\n");
XUD_SetReady_In(ep_feedback, (fb_clocks, unsigned char[]), (AUDIO_CLASS == 2) ? 4 : 3);
break;
//Send samples to host
case XUD_SetData_Select(c_aud_in, ep_aud_in, result):
//debug_printf("sent data\n");
//Populate the input buffer ready for the next read
pack_samples_to_buff(loopback_samples, num_samples_to_send_to_host, in_subslot_size, buffer_aud_in);
//Use the number of samples we received last time so we are always balanced (assumes same in/out count)
unsigned input_buffer_size = num_samples_to_send_to_host * in_subslot_size;
XUD_SetReady_InPtr(ep_aud_in, (unsigned)buffer_aud_in, input_buffer_size); //loopback
num_samples_to_send_to_host = 0;
break;
//Exchange samples with audiohub
case c_audio_hub :> samples_in[0]:
for (int i = 1; i < NUM_USB_CHAN_IN; i++) c_audio_hub :> samples_in[i];
// for (int i = 0; i < NUM_USB_CHAN_OUT; i++) c_audio_hub <: samples_out[1];