用户您好，请详细描述您所遇到的问题：
在提供的示例代码里，很容易的在 sample_osd, sample_vps 里找到如下代码
memset(&feedback_buf, 0, sizeof(hb_vio_buffer_t));
size_y = max_width * max_height;
size_uv = size_y / 2;
prepare_user_buf(&feedback_buf, size_y, size_uv);
feedback_buf.img_info.planeCount = 2;
feedback_buf.img_info.img_format = 8;
feedback_buf.img_addr.width = max_width;
feedback_buf.img_addr.height = max_height;
feedback_buf.img_addr.stride_size = max_width;
关于prepare_user_buf 函数我先贴出来，如下
int prepare_user_buf(void *buf, uint32_t size_y, uint32_t size_uv)
{
int ret;
hb_vio_buffer_t *buffer = (hb_vio_buffer_t *)buf;
if (buffer == NULL)
return -1;
buffer->img_info.fd[0] = ion_open();
buffer->img_info.fd[1] = ion_open();
ret = ion_alloc_phy(size_y, &buffer->img_info.fd[0], &buffer->img_addr.addr[0], &buffer->img_addr.paddr[0]);
if (ret) {
printf("prepare user buf error\n");
return ret;
}
ret = ion_alloc_phy(size_uv, &buffer->img_info.fd[1], &buffer->img_addr.addr[1], &buffer->img_addr.paddr[1]);
if (ret) {
printf("prepare user buf error\n");
return ret;
}
printf("buf:y: vaddr = 0x%s paddr = 0x%lx; uv: vaddr = 0x%s, paddr = 0x%lx\n",
buffer->img_addr.addr[0], buffer->img_addr.paddr[0],
buffer->img_addr.addr[1], buffer->img_addr.paddr[1]);
return 0;
}
其中 ion_alloc_phy 函数是在示例代码里声明的，并不是在官方提供的sdk源码中声明的，这一点就很疑惑，很自然的就会问这个函数的实现会在哪里？对应的内存释放函数在哪里？-
然而却能看到下面的官方接口，用来释放 hb_vio_buffer_t 结构体的，但是示例代码里没有说明如何释放通过ion_alloc_phy申请的内存
ret = HB_VPS_ReleaseChnFrame(VpsGrp, vps_chn_index, &chn_2_out_buf);
导致现在的问题是：-
封装OSD功能的类会反复new 和 delete，因为硬件OSD仅仅只支持1路，所以有这个需求。现在不知道如何释放prepare_user_buf 函数中 申请的 buffer->img_addr.addr[0] 和 buffer->img_addr.addr[1] 的内存，导致内存泄漏，
以下尝试均无效:
-
1.使用
HB_VPS_ReleaseChnFrame函数来释放feedback_buf，无效, 提示如下输出[ERROR]["vps"][vps/hb_vps_api.c:2570] [862861.268557]HB_VPS_ReleaseChnFrame[2570]: VPS ReleaseChnFrame error: unexist frame! -
2.
hb_vio_free_ipubuf(feedback_buf.img_info.pipeline_id, &feedback_buf);无效, 提示如下输出[ERROR]["LOG"][hb_vio_interface.c:546] [863089.043902]hb_vio_free_ipubuf[546]: pipe(0) was null ! -
3.尝试使用
free函数来释放，无效 -
4.尝试使用
delete函数来释放，无效 -
5.尝试使用
delete []函数来释放，无效
今天在测试时，当前代码反复new， delete 9次后就会报下面的错误:
[ERROR]["LOG"][src/utils/mem_log.c:108] [ERROR][943236.37510][3955207:3965179][TREE_NODE] <mem_insert_mem_fd_node:319> Same fd 66 in the node tree.
[ERROR]["LOG"][src/utils/mem_log.c:108] [ERROR][943236.37522][3955207:3965179][MEM_ALLOCATOR] <mem_insert_com_buf_fd_tree:42> Fail to insert memory node(Invalid parameters).
[ERROR]["LOG"][src/utils/mem_log.c:108] [ERROR][943236.37576][3955207:3965179][MEM_ALLOCATOR] <mem_try_alloc_com_buf_locked:137> Fail to update memory node(Invalid file descriptor).
[ERROR]["LOG"][src/utils/mem_log.c:108] [ERROR][943236.37578][3955207:3965179][MEM_ALLOCATOR] <hb_mem_alloc_com_buf_with_lable:259> Fail to allocate common buffer(ret=-16777211).
[ERROR]["LOG"][src/utils/mem_log.c:108] [ERROR][943236.37581][3955207:3965179][HBMEM] <hbmem_alloc:125> Fail to allocate buffer(ret=-16777211).
[ERROR]["multimedia"][src/vdi/linux/vdi_osal.c:174] [ERROR][943236.37583][3955207:3965179][MIANHELPER] hbmem_alloc failed
[ERROR]["multimedia"][src/vdi/linux/vdi_osal.c:174] [ERROR][943236.37588][3955207:3965179]AllocateDecFrameBuffer:1426 fail to allocate frame buffer
[ERROR]["multimedia"][src/vdi/linux/vdi_osal.c:174] [ERROR][943236.38050][3955207:3965179][VDI] invalid buffer to free address = 0x0
[ERROR]["LOG"][src/utils/mem_log.c:108] [ERROR][943236.38198][3955207:3955229][TREE_NODE] <mem_insert_mem_fd_node:319> Same fd 66 in the node tree.
[ERROR]["LOG"][src/utils/mem_log.c:108] [ERROR][943236.38202][3955207:3955229][MEM_ALLOCATOR] <mem_insert_com_buf_fd_tree:42> Fail to insert memory node(Invalid parameters).
[ERROR]["vdec"][video/src/hb_vdec.c:438] [943236.382259]HB_VDEC_QueryStatus[438]: [HB_VDEC] HB_VDEC_QueryStatus:438 Failed to hb_mm_mc_release VeChn = 0 s32Ret = -269024256
HB_VDEC_QueryStatus error:-269024256
[ERROR]["LOG"][src/utils/mem_log.c:108] [ERROR][943236.38236][3955207:3955229][MEM_ALLOCATOR] <mem_try_alloc_com_buf_locked:137> Fail to update memory node(Invalid file descriptor).
[ERROR]["LOG"][src/utils/mem_log.c:108] [ERROR][943236.38239][3955207:3955229][MEM_ALLOCATOR] <hb_mem_alloc_com_buf_with_lable:259> Fail to allocate common buffer(ret=-16777211).
[ERROR]["LOG"][src/utils/mem_log.c:108] [ERROR][943236.38242][3955207:3955229][HBMEM] <hbmem_alloc:125> Fail to allocate buffer(ret=-16777211).
mmzFree paddr = 0x1769a000, vaddr = 0x7fa005d000 i = 0, ret=0
[ERROR]["vio_bufmgr"][utils/hb_vio_buffer_mgr.c:364] [943236.382441]ion_alloc_phy_type[364]: hbmem_alloc failed
prepare user buf error ret:-1
error. prepare_user_buf: -1
猜测是前8次的new操作一共调用了8次prepare_user_buf函数，等于调用了16次ion_alloc_phy 函数而没有将这些内存回收，导致ION内存满了，请问如何正确的回收ion_alloc_phy函数申请的双内存