我想从Uint8 *制作Uint8的矢量,但由于某些值不相同。这是我的代码。如何正确地将uint8 *复制到矢量<Uint8>中
std::vector<Uint8> wav_vector = {};
Uint8* wav_buffer_;
for (unsigned int i = 0; i < wav_length_; i++) {
wav_vector.push_back(wav_buffer_[i]);
}
再后来我试图验证这些值:
for (unsigned int i = 0; i < wav_length_; i++){
if (wav_buffer_[i]!=wav_vector[i]){
cout<<i<<endl;
printf("Orignal Buffer %u\n", wav_buffer_[i]);
printf("Vector Buffer %u\n", wav_vector[i]);
}
}
这些都是我的样本输出:
Index: 0
Orignal Buffer 208
Vector Buffer 40
Index: 1
Orignal Buffer 72
Vector Buffer 3
Index: 2
Orignal Buffer 111
Vector Buffer 183
Index: 3
Orignal Buffer 1
Vector Buffer 97
Index: 4
Orignal Buffer 0
Vector Buffer 79
Index: 5
Orignal Buffer 0
Vector Buffer 127
Index: 8
Orignal Buffer 120
Vector Buffer 40
Index: 9
Orignal Buffer 251
Vector Buffer 3
Index: 10
Orignal Buffer 182
Vector Buffer 183
Index: 16
Orignal Buffer 0
Vector Buffer 176
Index: 17
Orignal Buffer 0
Vector Buffer 200
Index: 18
Orignal Buffer 0
Vector Buffer 109
Index: 19
Orignal Buffer 0
Vector Buffer 1
Index: 24
Orignal Buffer 0
Vector Buffer 176
Index: 25
Orignal Buffer 0
Vector Buffer 200
Index: 26
Orignal Buffer 0
Vector Buffer 109
Index: 27
Orignal Buffer 0
Vector Buffer 1
Index: 32768
Orignal Buffer 16
Vector Buffer 120
任何帮助将非常感激。
注: 我试过这个,它的工作原理。但我想使用for循环,因为我有一些其他需要位移的音频格式。
std::vector<Uint8> wav_vector(&wav_buffer_[0], &wav_buffer_[wav_length_]);
你'wav_buffer_'指针被正确初始化或只是指着的地方? –
旁注:从数组中初始化一个'vector'不需要显式循环:'std :: vector wav_vector(wav_buffer_,wav_buffer_ + wav_length _);'完成。 –
ShadowRanger
它指向构造函数的某处。 Uint8 * wav_buffer_; 的AudioFile ::的AudioFile(SDL_AudioSpec * wav_file,UINT8 * wav_buffer, UINT32 wav_length):wav_file_(wav_file),wav_buffer_(wav_buffer) wav_length_(wav_length){// SDL_FreeWAV(wav_buffer); } –