/*
* send constant buffer to DSP TX
*/
static inline void
SEND_CONST_TO_DSP_TX(void)
{
bp_send_from_buf(DSP_TX_BUF_0, PORT_DSP, 1,
DSP_TX_FIRST_LINE,
DSP_TX_FIRST_LINE + DSP_TX_EXTRA_LINES + DSP_TX_SAMPLES_PER_FRAME - 1);
}
void
double_buffering(int port) {
unsigned int localstatus = buffer_pool_status->status;
if(localstatus & BPS_DONE_0) {
bp_clear_buf(0);
if(buffer_state[0] == FILLING) {
buffer_state[0] = FULL;
if(buffer_state[1] == EMPTY) {
bp_receive_to_buf(1, 1, 1, 10, 509); // DSP_RX to buffer 1, use 500 lines
buffer_state[1] = FILLING;
}
else
dsp_rx_idle = 1;
if(serdes_tx_idle) {
serdes_tx_idle = 0;
bp_send_from_buf(0, port, 1, 10, 509); // SERDES_TX from buffer 0
buffer_state[0] = EMPTYING;
}
}
else { // buffer was emptying
buffer_state[0] = EMPTY;
if(dsp_rx_idle) {
dsp_rx_idle = 0;
bp_receive_to_buf(0, 1, 1, 10, 509); // DSP_RX to buffer 0, use 500 lines
buffer_state[0] = FILLING;
}
if(buffer_state[1] == FULL) {
bp_send_from_buf(1, port, 1, 10, 509); // SERDES_TX from buffer 1
buffer_state[1] = EMPTYING;
}
else
serdes_tx_idle = 1;
}
putstr("Int Proc'ed 0\n");
}
if(localstatus & BPS_DONE_1) {
bp_clear_buf(1);
if(buffer_state[1] == FILLING) {
buffer_state[1] = FULL;
if(buffer_state[0] == EMPTY) {
bp_receive_to_buf(0, 1, 1, 10, 509); // DSP_RX to buffer 1, use 500 lines
buffer_state[0] = FILLING;
}
else
dsp_rx_idle = 1;
if(serdes_tx_idle) {
serdes_tx_idle = 0;
bp_send_from_buf(1, port, 1, 10, 509); // SERDES_TX from buffer 1
buffer_state[1] = EMPTYING;
}
}
else { // buffer was emptying
buffer_state[1] = EMPTY;
if(dsp_rx_idle) {
dsp_rx_idle = 0;
bp_receive_to_buf(1, 1, 1, 10, 509); // DSP_RX to buffer 1, use 500 lines
buffer_state[1] = FILLING;
}
if(buffer_state[0] == FULL) {
bp_send_from_buf(0, port, 1, 10, 509); // SERDES_TX from buffer 0
buffer_state[0] = EMPTYING;
}
else
serdes_tx_idle = 1;
}
putstr("Int Proc'ed 1\n");
}
if(localstatus & BPS_DONE_2) {
bp_clear_buf(2);
if(buffer_state[2] == FILLING) {
buffer_state[2] = FULL;
if(buffer_state[3] == EMPTY) {
bp_receive_to_buf(3, port, 1, 5, 504); // SERDES_RX to buffer 3, use 500 lines
buffer_state[3] = FILLING;
}
else
serdes_rx_idle = 1;
if(dsp_tx_idle) {
dsp_tx_idle = 0;
bp_send_from_buf(2, 1, 1, 5, 504); // DSP_TX from buffer 2
buffer_state[2] = EMPTYING;
}
}
else { // buffer was emptying
buffer_state[2] = EMPTY;
if(serdes_rx_idle) {
serdes_rx_idle = 0;
bp_receive_to_buf(2, port, 1, 5, 504); // SERDES_RX to buffer 2
buffer_state[2] = FILLING;
}
if(buffer_state[3] == FULL) {
bp_send_from_buf(3, 1, 1, 5, 504); // DSP_TX from buffer 3
buffer_state[3] = EMPTYING;
}
else
dsp_tx_idle = 1;
}
putstr("Int Proc'ed 2\n");
}
if(localstatus & BPS_DONE_3) {
bp_clear_buf(3);
if(buffer_state[3] == FILLING) {
buffer_state[3] = FULL;
if(buffer_state[2] == EMPTY) {
bp_receive_to_buf(2, port, 1, 5, 504); // SERDES_RX to buffer 2, use 500 lines
buffer_state[2] = FILLING;
}
else
serdes_rx_idle = 1;
if(dsp_tx_idle) {
dsp_tx_idle = 0;
bp_send_from_buf(3, 1, 1, 5, 504); // DSP_TX from buffer 3
buffer_state[3] = EMPTYING;
}
}
else { // buffer was emptying
buffer_state[3] = EMPTY;
if(serdes_rx_idle) {
serdes_rx_idle = 0;
bp_receive_to_buf(3, port, 1, 5, 504); // SERDES_RX to buffer 3
buffer_state[3] = FILLING;
}
if(buffer_state[2] == FULL) {
bp_send_from_buf(2, 1, 1, 5, 504); // DSP_TX from buffer 2
buffer_state[2] = EMPTYING;
}
else
dsp_tx_idle = 1;
}
putstr("Int Proc'ed 3\n");
}
}
