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jLynx 2023-05-19 08:16:05 +12:00 • committed by GitHub
parent 7aca7ce74d
commit 033c4e9a5b
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599 changed files with 70746 additions and 66896 deletions
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81
firmware/baseband/stream_output.cpp
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@ -25,53 +25,52 @@
#include "lpc43xx_cpp.hpp"
using namespace lpc43xx;
StreamOutput::StreamOutput(ReplayConfig* const config) :
fifo_buffers_empty { buffers_empty.data(), buffer_count_max_log2 },
fifo_buffers_full { buffers_full.data(), buffer_count_max_log2 },
config { config },
data { std::make_unique<uint8_t[]>(config->read_size * config->buffer_count) }
{
config->fifo_buffers_empty = &fifo_buffers_empty;
config->fifo_buffers_full = &fifo_buffers_full;
StreamOutput::StreamOutput(ReplayConfig* const config)
: fifo_buffers_empty{buffers_empty.data(), buffer_count_max_log2},
fifo_buffers_full{buffers_full.data(), buffer_count_max_log2},
config{config},
data{std::make_unique<uint8_t[]>(config->read_size * config->buffer_count)} {
config->fifo_buffers_empty = &fifo_buffers_empty;
config->fifo_buffers_full = &fifo_buffers_full;
for(size_t i=0; i<config->buffer_count; i++) {
// Set buffers to point consecutively in previously allocated unique_ptr "data"
buffers[i] = { &(data.get()[i * config->read_size]), config->read_size };
// Put all buffer pointers in the "empty buffer" FIFO
fifo_buffers_empty.in(&buffers[i]);
}
for (size_t i = 0; i < config->buffer_count; i++) {
// Set buffers to point consecutively in previously allocated unique_ptr "data"
buffers[i] = {&(data.get()[i * config->read_size]), config->read_size};
// Put all buffer pointers in the "empty buffer" FIFO
fifo_buffers_empty.in(&buffers[i]);
}
}
size_t StreamOutput::read(void* const data, const size_t length) {
uint8_t* p = static_cast<uint8_t*>(data);
size_t read = 0;
uint8_t* p = static_cast<uint8_t*>(data);
size_t read = 0;
while( read < length ) {
if( !active_buffer ) {
// We need a full buffer...
if( !fifo_buffers_full.out(active_buffer) ) {
// ...but none are available. Hole in transmission (inform app and stop ?)
break;
}
}
const auto remaining = length - read;
read += active_buffer->read(&p[read], remaining);
while (read < length) {
if (!active_buffer) {
// We need a full buffer...
if (!fifo_buffers_full.out(active_buffer)) {
// ...but none are available. Hole in transmission (inform app and stop ?)
break;
}
}
if( active_buffer->is_empty() ) {
if( !fifo_buffers_empty.in(active_buffer) ) {
// Empty buffers FIFO is already full.
// This should never happen if the number of buffers is less
// than the capacity of the FIFO.
break;
}
// Tell M0 (IRQ) that a buffer has been consumed.
active_buffer = nullptr;
creg::m4txevent::assert_event();
}
}
const auto remaining = length - read;
read += active_buffer->read(&p[read], remaining);
config->baseband_bytes_received += length;
if (active_buffer->is_empty()) {
if (!fifo_buffers_empty.in(active_buffer)) {
// Empty buffers FIFO is already full.
// This should never happen if the number of buffers is less
// than the capacity of the FIFO.
break;
}
// Tell M0 (IRQ) that a buffer has been consumed.
active_buffer = nullptr;
creg::m4txevent::assert_event();
}
}
return read;
config->baseband_bytes_received += length;
return read;
}