IDirect3DSurface9_LockRect调用会内存泄漏

[小小的熊OnlyOne]

hr = IDirect3DSurface9_LockRect(surface, &LockedRect, NULL, D3DLOCK_READONLY);
if (FAILED(hr)) {
av_log(NULL, AV_LOG_ERROR, "Unable to lock DXVA2 surface\n");
return AVERROR_UNKNOWN;
}

av_image_copy_plane(ctx->tmp_frame->data[0], ctx->tmp_frame->linesize[0],
(uint8_t*)LockedRect.pBits,
LockedRect.Pitch, frame->width, frame->height);

av_image_copy_plane(ctx->tmp_frame->data[1], ctx->tmp_frame->linesize[1],
(uint8_t*)LockedRect.pBits + LockedRect.Pitch * surfaceDesc.Height,
LockedRect.Pitch, frame->width, frame->height / 2);

IDirect3DSurface9_UnlockRect(surface);

这段代码每次调用都会增加3M左右的内存，请问这个内存怎么释放？

[小小的熊OnlyOne]

LockRect和UnLockRect这两个函数导致的，请问怎么解决？

[小小的熊OnlyOne]

是需要释放LockedRect.pBits？怎么释放？

[小小的熊OnlyOne]

但是我每次调用都会涨内存

[WJN92]

应该是dx内部的操作吧

[yshuise]

看看API，有没有对应的释放内存的函数