Simple library for reading RIFF files
The data is read lazily, so in cases where seeking is cheaper than reading and large chunks of data can be skipped, this results in fast parsing, and also saves memory usage.
The following example program prints the structure of the RIFF file, and provides an hex dump of unknown chunks:
#include <cstdint>
#include <fstream>
#include <iomanip>
#include <iostream>
#include <string>
#include <vector>
#include <riffcpp.hpp>
void print_hex_dump(std::vector<char> &data, int indent) {
int i = 0;
for (char c : data) {
if (i % 16 == 0) {
for (int j = 0; j < indent; j++) {
std::cout << " ";
}
}
std::cout << std::setfill('0') << std::setw(2) << std::hex
<< (int)((unsigned char)c) << ' ';
if (i % 16 == 15) {
std::cout << " ";
for (int j = 0; j < 16; j++) {
char x = data[i - 15 + j];
if (x >= 0x20 && x <= 0x7E) {
std::cout << x;
} else {
std::cout << '.';
}
}
std::cout << std::endl;
}
i++;
}
if (i % 16 != 0) {
for (int k = i % 16; k < 16; k++) {
std::cout << "-- ";
}
std::cout << " ";
for (int j = 0; j < i % 16; j++) {
char x = data[i - (i % 16) + j];
if (x >= 0x20 && x <= 0x7E) {
std::cout << x;
} else {
std::cout << '.';
}
}
}
std::cout << std::dec << std::endl;
}
void print_chunks(riffcpp::Chunk &ch, int offs = 0) {
auto id = ch.id();
auto size = ch.size();
std::vector<char> buffer;
buffer.resize(size);
ch.read_data(buffer.data(), buffer.size());
if (id == riffcpp::riff_id || id == riffcpp::list_id) {
for (int i = 0; i < offs; i++) {
std::cout << " ";
}
auto type = ch.type();
std::cout << std::string(id.data(), 4) << " " << std::string(type.data(), 4)
<< " size: " << size << std::endl;
for (auto ck : ch) {
print_chunks(ck, offs + 1);
}
} else {
for (int i = 0; i < offs; i++) {
std::cout << " ";
}
std::cout << std::string(id.data(), 4) << " size: " << size << std::endl;
print_hex_dump(buffer, offs + 1);
}
}
int main(int argc, char *argv[]) {
riffcpp::Chunk ch(argv[1]);
try {
print_chunks(ch);
} catch (riffcpp::Error &e) {
std::cerr << "\n Error: " << e.what() << std::endl;
}
return 0;
}Add the libdmusic PPA to your repository:
sudo add-apt-repository ppa:libdmusic/unstableThen, run
sudo apt update
sudo apt install libriffcpp # you'll also need libriffcpp-dev if you need to compile programs that use riffcppvcpkg already has a portfile for riffcpp,
so you can just do
vcpkg install riffcppAfter downloading the sources (either by git clone or archive), run the following commands:
mkdir build_riffcpp
cd build_riffcpp
cmake path/to/riffcpp
cmake --build .
cmake --build . --target INSTALL # Only if you want to install the library