|
#include <chrono>
|
|
#include <cstdio>
|
|
#include <fstream>
|
|
#include <iomanip>
|
|
#include <iostream>
|
|
#include <limits.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/wait.h>
|
|
#include <unistd.h>
|
|
#include <vector>
|
|
|
|
#include <packjpg.h>
|
|
|
|
#include "PhotoCompressArchiver.hh"
|
|
|
|
#define ERROR std::cerr << BOLD << RED << "ERROR: " << ENDC
|
|
|
|
#define WRKR_OUT_REG(msg) { \
|
|
std::lock_guard<std::mutex> lock(m_output_mutex); \
|
|
std::cout << "T[" << std::setw(2) << tid << "] " << msg << std::endl; \
|
|
}
|
|
|
|
#define WRKR_OUT_ERR(msg) { \
|
|
std::lock_guard<std::mutex> lock(m_output_mutex); \
|
|
std::cerr << "T[" << std::setw(2) << tid << "] " << BOLD << RED \
|
|
<< "ERROR: " << ENDC << msg << std::endl; \
|
|
}
|
|
|
|
// Helper functions
|
|
std::string _format_num_bytes(uint64_t num_bytes)
|
|
{
|
|
const uint64_t tera = (1024 * 1024 * 1024 * 1024L);
|
|
const uint64_t giga = (1024 * 1024 * 1024L);
|
|
const uint64_t mega = (1024 * 1024L);
|
|
const uint64_t kilo = 1024L;
|
|
|
|
double fractional;
|
|
std::ostringstream output;
|
|
|
|
if (num_bytes >= tera)
|
|
{
|
|
// Tera
|
|
fractional = ((double)num_bytes) / tera;
|
|
output << std::fixed << std::setprecision(2) << fractional;
|
|
output << " TB";
|
|
}
|
|
else if (num_bytes >= giga)
|
|
{
|
|
// Giga
|
|
fractional = ((double)num_bytes) / giga;
|
|
output << std::fixed << std::setprecision(2) << fractional;
|
|
output << " GB";
|
|
}
|
|
else if (num_bytes >= mega)
|
|
{
|
|
// Mega
|
|
fractional = ((double)num_bytes) / mega;
|
|
output << std::fixed << std::setprecision(2) << fractional;
|
|
output << " MB";
|
|
}
|
|
else if (num_bytes >= kilo)
|
|
{
|
|
// Kilo
|
|
fractional = ((double)num_bytes) / kilo;
|
|
output << std::fixed << std::setprecision(2) << fractional;
|
|
output << " KB";
|
|
}
|
|
else
|
|
{
|
|
// Bytes
|
|
output << num_bytes << " b";
|
|
}
|
|
|
|
return output.str();
|
|
}
|
|
|
|
PhotoCompressArchiver::PhotoCompressArchiver(
|
|
const std::string& path,
|
|
uint32_t num_threads,
|
|
bool decompress,
|
|
bool delete_orig,
|
|
boost::regex& filter_regex)
|
|
: m_path(path),
|
|
m_num_threads(num_threads),
|
|
m_decompress(decompress),
|
|
m_delete_orig(delete_orig),
|
|
m_files_processed(0),
|
|
m_num_input_files(0),
|
|
m_total_uncompressed_size(0),
|
|
m_total_compressed_size(0),
|
|
p_finder_thread(nullptr),
|
|
m_filter_empty(true),
|
|
m_filter_regex(filter_regex)
|
|
{
|
|
// This is a somewhat crude way to determining if the filter regex is empty
|
|
m_filter_empty = std::string("").compare(filter_regex.str()) == 0;
|
|
}
|
|
|
|
PhotoCompressArchiver::~PhotoCompressArchiver()
|
|
{}
|
|
|
|
int PhotoCompressArchiver::execute()
|
|
{
|
|
// Grab start time
|
|
auto start = std::chrono::system_clock::now();
|
|
|
|
// Start the file finder thread
|
|
std::cout << "Starting file finder..." << std::flush;
|
|
p_finder_thread = new std::thread(&PhotoCompressArchiver::find_files, this,
|
|
m_path,
|
|
(m_decompress ? PJG_REGEX : JPEG_REGEX));
|
|
std::cout << "DONE" << std::endl;
|
|
|
|
// Start worker threads
|
|
std::cout << "Starting worker threads..." << std::flush;
|
|
for (uint32_t idx = 0; idx < m_num_threads; ++idx)
|
|
{
|
|
// Spawn worker thread and add to list for bookkeeping
|
|
std::thread* worker = new std::thread(&PhotoCompressArchiver::worker_thread_body,
|
|
this, idx);
|
|
m_worker_threads.push_back(worker);
|
|
}
|
|
std::cout << "DONE\n" << std::endl;
|
|
|
|
// Join the file finder thread
|
|
p_finder_thread->join();
|
|
std::cout << "File finder completed:" << std::endl;
|
|
|
|
// Error out of no input files were found
|
|
if (m_num_input_files == 0)
|
|
{
|
|
ERROR << "No matching input files found. Please check the patch and "
|
|
<< "try again." << std::endl;
|
|
return -1;
|
|
}
|
|
|
|
std::cout << " Found " << m_num_input_files << " files" << std::endl;
|
|
|
|
if (! m_decompress)
|
|
{
|
|
std::cout << " Total uncompressed bytes: "
|
|
<< _format_num_bytes(m_total_uncompressed_size) << "\n"
|
|
<< std::endl;
|
|
}
|
|
|
|
// Add terminator for each worker thread
|
|
for (uint32_t idx = 0; idx < m_num_threads; ++idx)
|
|
{
|
|
m_file_list.push_back(nullptr);
|
|
}
|
|
|
|
// Clean up the finder thread
|
|
delete p_finder_thread;
|
|
p_finder_thread = nullptr;
|
|
|
|
// Now join the worker threads
|
|
for (auto worker : m_worker_threads)
|
|
{
|
|
worker->join();
|
|
delete worker;
|
|
}
|
|
|
|
// Grab start time and calculate duration
|
|
auto end = std::chrono::system_clock::now();
|
|
auto diff = end - start;
|
|
double duration = std::chrono::duration<double>(diff).count();
|
|
|
|
// Print out message if any errors were found
|
|
if (m_errors.size() > 0)
|
|
{
|
|
std::cout << BOLD << RED << "\n\nNOTE: errors were encountered "
|
|
<< "processing the following " << m_errors.size()
|
|
<< " files:\n" << ENDC << std::endl;
|
|
|
|
WorkUnit* work_unit = nullptr;
|
|
uint32_t size = m_errors.size();
|
|
for (uint32_t idx = 0; idx < size; ++idx)
|
|
{
|
|
work_unit = m_errors.pop_front();
|
|
std::cout << " " << work_unit->m_path.string() << std::endl;
|
|
delete work_unit;
|
|
}
|
|
std::cout << std::endl;
|
|
}
|
|
|
|
// Print out compression information if compressing
|
|
if (! m_decompress)
|
|
{
|
|
std::cout << "\n Total uncompressed bytes: "
|
|
<< _format_num_bytes(m_total_uncompressed_size) << std::endl;
|
|
std::cout << " Total compressed bytes: "
|
|
<< _format_num_bytes(m_total_compressed_size) << std::endl;
|
|
|
|
// Calculate and display ratio
|
|
double ratio = (double)m_total_compressed_size / m_total_uncompressed_size;
|
|
std::cout << " Compression ratio: " << std::fixed
|
|
<< std::setprecision(2) << (ratio * 100) << "%" << std::endl;
|
|
}
|
|
else
|
|
{
|
|
std::cout << std::endl;
|
|
}
|
|
|
|
// Display execution duration
|
|
std::cout << " Total time: " << duration << " s\n" << std::endl;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void PhotoCompressArchiver::find_files(
|
|
const bfs::path& dir_path,
|
|
const boost::regex& file_regex)
|
|
{
|
|
bfs::directory_iterator end_iter;
|
|
for (bfs::directory_iterator dir_iter(dir_path); dir_iter != end_iter; ++dir_iter)
|
|
{
|
|
if (bfs::is_directory(dir_iter->status()))
|
|
{
|
|
// Found directory recurse
|
|
find_files(dir_iter->path(), file_regex);
|
|
}
|
|
else if (boost::regex_match(dir_iter->path().filename().string(), file_regex) &&
|
|
bfs::is_regular_file(dir_iter->path()))
|
|
{
|
|
// Found file match
|
|
|
|
// If the filter is not empty, then check against it before proceeding
|
|
if (! m_filter_empty)
|
|
{
|
|
if (boost::regex_match(dir_iter->path().filename().string(),
|
|
m_filter_regex))
|
|
{
|
|
// The filter regex matched, skip this file
|
|
continue;
|
|
}
|
|
}
|
|
|
|
// Create a WorkUnit and add it to the queue
|
|
WorkUnit* work_unit = new WorkUnit(dir_iter->path());
|
|
++m_num_input_files;
|
|
m_total_uncompressed_size += work_unit->m_file_size;
|
|
m_file_list.push_back(work_unit);
|
|
}
|
|
}
|
|
}
|
|
|
|
void PhotoCompressArchiver::worker_thread_body(uint32_t tid)
|
|
{
|
|
WorkUnit* work_unit = nullptr;
|
|
auto file_buffer = new std::vector<unsigned char>(4 * 1024 * 1024);
|
|
|
|
// Setup packJPG instance for this worker
|
|
packJPG* instance = new packJPG();
|
|
|
|
// (De/)compress worker variables
|
|
unsigned char* out_buffer = nullptr;
|
|
uint32_t out_size = 0;
|
|
char message[MSG_SIZE];
|
|
|
|
while (true)
|
|
{
|
|
// Reset worker vars
|
|
out_size = 0;
|
|
std::memset(message, 0, MSG_SIZE);
|
|
|
|
// Blocking wait for next work unit
|
|
work_unit = m_file_list.pop_front();
|
|
if (work_unit == nullptr)
|
|
{
|
|
break;
|
|
}
|
|
|
|
// Resize file buffer if needed
|
|
if (work_unit->m_file_size > file_buffer->size())
|
|
{
|
|
file_buffer->resize(work_unit->m_file_size);
|
|
}
|
|
|
|
// Read in the input file
|
|
std::ifstream input_stream(work_unit->m_path.string(),
|
|
std::ios::binary | std::ios::in);
|
|
if (! input_stream)
|
|
{
|
|
WRKR_OUT_ERR("unable to read from " << work_unit->m_path << "\n")
|
|
m_errors.push_back(work_unit);
|
|
continue;
|
|
}
|
|
|
|
input_stream.read((char*)file_buffer->data(), work_unit->m_file_size);
|
|
input_stream.close();
|
|
|
|
// Determine input, and therefore output, filetype / extension based
|
|
// on mode
|
|
const std::string* output_file_extension = nullptr;
|
|
if (m_decompress)
|
|
{
|
|
// We are decompressing so the file we found had better be a PJG
|
|
if ((file_buffer->at(0) == packJPG::pjg_magic[0]) &&
|
|
(file_buffer->at(1) == packJPG::pjg_magic[1]))
|
|
{
|
|
output_file_extension = &JPG_EXTENSION;
|
|
}
|
|
else
|
|
{
|
|
WRKR_OUT_ERR("the input file " << work_unit->m_path
|
|
<< " does not appear to be a valid "
|
|
"packjpg (.pjg) file even though its filename "
|
|
"suggests it is!")
|
|
m_errors.push_back(work_unit);
|
|
continue;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// We are compressing so the file we found had better be a JPG
|
|
if ((file_buffer->at(0) == 0xFF) && (file_buffer->at(1) == 0xD8))
|
|
{
|
|
output_file_extension = &PJG_EXTENSION;
|
|
}
|
|
else
|
|
{
|
|
WRKR_OUT_ERR("the input file " << work_unit->m_path
|
|
<< " does not appear to be a valid "
|
|
"JPEG (.jpg) file even though its filename "
|
|
"suggests it is!")
|
|
m_errors.push_back(work_unit);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
// Do the thing!
|
|
instance->pjglib_init_streams(file_buffer->data(), 1,
|
|
work_unit->m_file_size, nullptr, 1);
|
|
|
|
bool rc = instance->pjglib_convert_stream2mem(&out_buffer,
|
|
&out_size, message);
|
|
if (!rc)
|
|
{
|
|
WRKR_OUT_ERR("An error occurred during the "
|
|
<< (m_decompress ? "decompression" : "compression")
|
|
<< " operation on " << work_unit->m_path
|
|
<< ": " << message)
|
|
m_errors.push_back(work_unit);
|
|
continue;
|
|
}
|
|
|
|
//~ WRKR_OUT_REG("Status message: " << message)
|
|
//~ WRKR_OUT_REG("Output size: " << out_size)
|
|
|
|
// Increment counts
|
|
m_total_compressed_size += out_size;
|
|
++m_files_processed;
|
|
|
|
// Create output file path be replacing extension of input file
|
|
bfs::path out_path = bfs::path(work_unit->m_path).replace_extension(
|
|
*output_file_extension);
|
|
|
|
// Write output file
|
|
std::ofstream output_stream(out_path.string(),
|
|
std::ios::binary | std::ios::out);
|
|
if (! output_stream)
|
|
{
|
|
WRKR_OUT_ERR("unable to write to \"" << out_path << "\"")
|
|
m_errors.push_back(work_unit);
|
|
continue;
|
|
}
|
|
output_stream.write((const char*)out_buffer, out_size);
|
|
output_stream.close();
|
|
|
|
// Delete original file if so instructed
|
|
if (m_delete_orig)
|
|
{
|
|
bfs::remove(work_unit->m_path);
|
|
}
|
|
|
|
// Print status
|
|
if (m_decompress)
|
|
{
|
|
WRKR_OUT_REG(" -- (" << std::fixed << std::setprecision(2)
|
|
<< get_global_percent_done()
|
|
<< "%) Output file: " << out_path)
|
|
}
|
|
else
|
|
{
|
|
double percent = ((double)out_size) / work_unit->m_file_size;
|
|
percent *= 100;
|
|
WRKR_OUT_REG(" -- (" << std::fixed << std::setprecision(2)
|
|
<< get_global_percent_done()
|
|
<< "%) Output file: " << out_path << " -- "
|
|
<< std::fixed << std::setprecision(2)
|
|
<< percent << "%")
|
|
}
|
|
|
|
delete work_unit;
|
|
}
|
|
|
|
WRKR_OUT_REG(" -- " << PURPLE << BOLD << "[[exiting]]" << ENDC)
|
|
|
|
// Clean up
|
|
std::free(out_buffer);
|
|
delete instance;
|
|
delete file_buffer;
|
|
}
|
|
|
|
double PhotoCompressArchiver::get_global_percent_done()
|
|
{
|
|
return ((double)m_files_processed / m_num_input_files) * 100;
|
|
}
|