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[英]C++ (Ubuntu): load audio file (wav, mp3, aiff) to array/vector with gstreamer
[英]How to load a Wav file in an Array in C++?
嘿,我有一個動態數組,我想將Wav文件的數據加載到該數組中,我已經寫了開頭,但是我不知道如何在動態數組中加載文件,有人可以進一步幫助我嗎用這個代碼?
#include <iostream>
using namespace std;
template <typename T>
class Array{
public:
int size;
T *arr;
Array(int s){
size = s;
arr = new T[size];
}
T& operator[](int index)
{
if (index > size)
resize(index);
return arr[index];
}
void resize(int newSize) {
T* newArray = new T[newSize];
for (int i = 0; i <size; i++)
{
newArrayi] = arr[i];
}
delete[] arr;
arr = newArray;
size = newSize;
}
};
int main(){
Array<char> wavArray(10);
FILE *inputFile;
inputFile =fopen("song.wav", "rb");
return 0;
}
如果您只想將整個文件加載到內存中,這可能會派上用場:
#include <iterator>
// a function to load everything from an istream into a std::vector<char>
std::vector<char> load_from_stream(std::istream& is) {
return {std::istreambuf_iterator<char>(is), std::istreambuf_iterator<char>()};
}
...並使用C ++文件流類打開和自動關閉文件。
{
// open the file
std::ifstream is(file, std::ios::binary);
// check if it's opened
if(is) {
// call the function to load all from the stream
auto content = load_from_stream(is);
// print what we got (works on textfiles)
std::copy(content.begin(), content.end(),
std::ostream_iterator<char>(std::cout));
} else {
std::cerr << "failed opening " << file << "\n";
}
}
...但是WAV文件包含許多描述文件內容的不同塊,因此您可能需要創建單獨的類以將這些塊與文件進行流傳輸。
char* readFileBytes(const char *name)
{
FILE *fl = fopen(name, "r");
fseek(fl, 0, SEEK_END);
long len = ftell(fl);
char *ret = malloc(len);
fseek(fl, 0, SEEK_SET);
fread(ret, 1, len, fl);
fclose(fl);
return ret;
}
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