/**
* Adjust the frequency according to the current temperature.
* Returns the number of seconds to wait until the next adjustment.
*/
void Throttle::adjust()
{
int temp = readTemp();
std::vector<int>::iterator new_freq = freqs.end();
DEBUG_PRINT("[Throttle] Temperature: " << (float)temp/1000 << "°C");
// slowly reset stabilize counter
if (stabilize > 0) --stabilize;
if (stabilize < 0) ++stabilize;
// If the temperature exceeds a threshold, find the next best frequency.
if (temp > temp_max && stabilize >= 0) {
new_freq = std::lower_bound(freqs.begin(), freqs.end(), freq);
if (new_freq == freqs.begin())
return; // There is nothing we can do.
else
--new_freq;
stabilize = -wait_after_adjust;
}
if (temp < temp_min && stabilize <= 0) {
new_freq = std::upper_bound(freqs.begin(), freqs.end(), freq);
stabilize = wait_after_adjust;
}
// Have we found one? Then adjust.
if (new_freq != freqs.end()) {
freq = *new_freq;
writeFreq();
}
}
/**
* Execute one feedback cycle.
*
* Reads the current temperature and adapts the maximum frequency, if necessary.
*/
void Throttle::operator()()
{
// Look if there is new input in the pipe
queue.update();
if (override_freq) {
if (freq != override_freq) {
freq = override_freq;
writeFreq();
}
}
else
adjust();
}
void Compression::huffmanEncode(const char* inputFile)
{
FILE * src = fopen(inputFile, "rb");
char outputPath[1000];
const char * fileExtension = ".bin";
outputFilePath(inputFile, outputPath, fileExtension);
FILE * dest = fopen(outputPath, "wb");
if (src == NULL || dest == NULL)
{
printf("Не удается найти файл.");
exit(EXIT_FAILURE);
}
unsigned int fileSize;
fileSize = getFileSize(src);
unsigned int * freqList;
freqList = (unsigned int *)calloc(CHARS_LIMIT, sizeof(unsigned int));
calcCharFreq(src, freqList);
unsigned int numOfFreq;
numOfFreq = calcNumOfFreq(freqList);
HuffNode * nodeList = NULL;
buildNodeList(&nodeList, freqList);
buildHuffTree(&nodeList);
HuffNode * treeRoot = nodeList;
unsigned int i;
HuffCode newCode;
HuffCode * huffCodeTable;
huffCodeTable = (HuffCode *)calloc(CHARS_LIMIT, sizeof(HuffCode));
for(i=0; i<CHARS_LIMIT; i++)
{
if(freqList[i] > 0)
{
newCode.length = 0;
buildHuffCode(treeRoot, &newCode, i);
huffCodeTable[i] = newCode;
}
}
HuffHeader hHeader;
writeHeader(dest, hHeader, numOfFreq, fileSize);
HuffFreq hFreq;
writeFreq(dest, freqList, hFreq);
writeEncodedData(src, dest, huffCodeTable, fileSize);
freeHuffTree(treeRoot);
treeRoot = NULL;
free(huffCodeTable);
free(freqList);
fclose(src);
fclose(dest);
}
