int FileAccessBuffered::get_buffer(uint8_t *p_dest,int p_elements) const { ERR_FAIL_COND_V(!file.open, -1); if (p_elements > cache_size) { int total_read = 0; if (!(cache.offset == -1 || file.offset < cache.offset || file.offset >= cache.offset + cache.buffer.size())) { int size = (cache.buffer.size() - (file.offset - cache.offset)); size = size - (size % 4); //DVector<uint8_t>::Read read = cache.buffer.read(); //memcpy(p_dest, read.ptr() + (file.offset - cache.offset), size); memcpy(p_dest, cache.buffer.ptr() + (file.offset - cache.offset), size); p_dest += size; p_elements -= size; file.offset += size; total_read += size; }; int err = read_data_block(file.offset, p_elements, p_dest); if (err >= 0) { total_read += err; file.offset += err; }; return total_read; }; int to_read = p_elements; int total_read = 0; while (to_read > 0) { int left = cache_data_left(); if (left == 0) { if (to_read > 0) { file.offset += to_read; }; return total_read; }; if (left < 0) { return left; }; int r = MIN(left, to_read); //DVector<uint8_t>::Read read = cache.buffer.read(); //memcpy(p_dest+total_read, &read.ptr()[file.offset - cache.offset], r); memcpy(p_dest+total_read, cache.buffer.ptr() + (file.offset - cache.offset), r); file.offset += r; total_read += r; to_read -= r; }; return p_elements; };
uint8_t FileAccessBuffered::get_8() const { ERR_FAIL_COND_V(!file.open, 0); uint8_t byte = 0; if (cache_data_left() >= 1) { byte = cache.buffer[file.offset - cache.offset]; }; ++file.offset; return byte; };