提高无损音频编码算法中位复制的速度(用C编写)

#include <stdio.h>
#include <string.h>

void bit_copy_optimized(unsigned char *src, unsigned char *dst, size_t length) {
    const size_t chunk_size = 64; // 使用64字节（512位）的块大小
    size_t remaining = length;

    // 处理完整的块
    while (remaining >= chunk_size) {
        __m128i src_chunk = _mm_loadu_si128((__m128i *)src);
        _mm_storeu_si128((__m128i *)dst, src_chunk);
        src += chunk_size;
        dst += chunk_size;
        remaining -= chunk_size;
    }

    // 处理剩余的部分
    if (remaining > 0) {
        memcpy(dst, src, remaining);
    }
}

int main() {
    unsigned char src[] = { /* 源数据 */ };
    unsigned char dst[sizeof(src)];

    bit_copy_optimized(src, dst, sizeof(src));

    return 0;
}