About NvBufSurfaceAllocate

Robotics & Edge Computing Jetson & Embedded Systems Jetson Nano
1

Hello！

 I want to allocate NvBufSurface, width = 1504,  height = 1500, pitch = 1504*4, Why NvBufSurfaceAllocate get pitch  = 6144?
2 
NvBufSurfaceAllocateParams create_params;
memset(&create_params, 0, sizeof(create_params));
create_params.params.gpuId = 0;
create_params.params.width = 1504;
create_params.params.height = 1500;
create_params.params.memType = NVBUF_MEM_SURFACE_ARRAY;
create_params.params.layout = NVBUF_LAYOUT_PITCH;
create_params.params.colorFormat = NVBUF_COLOR_FORMAT_BGRA;
create_params.memtag = NvBufSurfaceTag_VIDEO_CONVERT;
NvBufSurface *src0;
int ret = NvBufSurfaceAllocate(&src0, 1, &create_params);
printf("src0->surfaceList[0].pitch:%d",src0->surfaceList[0].pitch);
3

How can I set pitch = 1504*4?

5

Hi,
The pitch alignment is due to hardware design, so it is fixed and cannot be arbitrarily changed. Please note this.

6

Ok, thank you for your answer

7

Hi,
I want to know NVBUF_LAYOUT_BLOCK_LINEAR data arrangement rule,can tell me?

8 
NvBufSurfaceAllocateParams create_params;
memset(&create_params, 0, sizeof(create_params));
create_params.params.gpuId = 0;
create_params.params.width = 300;
create_params.params.height = 200;
create_params.params.memType = NVBUF_MEM_SURFACE_ARRAY;
create_params.params.layout = NVBUF_LAYOUT_PITCH;
create_params.params.colorFormat = NVBUF_COLOR_FORMAT_BGRA;
create_params.memtag = NvBufSurfaceTag_VIDEO_CONVERT;
NvBufSurface *src0, *src1;
int ret = NvBufSurfaceAllocate(&src0, 1, &create_params);
create_params.params.layout = NVBUF_LAYOUT_BLOCK_LINEAR;
ret = NvBufSurfaceAllocate(&src1, 1, &create_params);

NvBufSurfaceMap(src0, 0, -1, NVBUF_MAP_READ_WRITE);
NvBufSurfaceMap(src1, 0, -1, NVBUF_MAP_READ_WRITE);

NvBufSurf::NvCommonTransformParams transform_params;
transform_params.src_top = 0;
transform_params.src_left = 0;
transform_params.src_width = 300;
transform_params.src_height = 200;
transform_params.dst_top = 0;
transform_params.dst_left = 0;
transform_params.dst_width = 300;
transform_params.dst_height = 200;
transform_params.flag = NVBUFSURF_TRANSFORM_FILTER;
transform_params.flip = NvBufSurfTransform_None;
transform_params.filter = NvBufSurfTransformInter_Nearest;

uchar * ptrStartAddr = (uchar * )src0->surfaceList[0].mappedAddr.addr[0];
for(int i = 0; i < src0->surfaceList[0].dataSize; i++)
{
    *ptrStartAddr = 0xee;
    ptrStartAddr++;
}

src0->numFilled = 1;
src1->numFilled = 1;

NvBufSurf::NvTransform(&transform_params, src0->surfaceList[0].bufferDesc, src1->surfaceList[0].bufferDesc);

std::ofstream outfile("/home/root/test.txt");
outfile.is_open();
u_char* ptr = (u_char*)src1->surfaceList[0].mappedAddr.addr[0];
for(int i = 0; i < src1->surfaceList[0].dataSize; i++)
{
    outfile.put(*ptr);
    ptr++;
}
outfile.close();
9

I filled all the data in NVBUF_LAYOUT_PITCH mode with 0xee,but use NvTransform to NVBUF_LAYOUT_BLOCK_LINEAR, data output like this

10

0000000 eeee eeee eeee eeee eeee eeee eeee eeee
*
0024140 0000 0000 0000 0000 0000 0000 0000 0000
*
0024180 eeee eeee eeee eeee eeee eeee eeee eeee
*
00241c0 0000 0000 0000 0000 0000 0000 0000 0000
*
0024200 eeee eeee eeee eeee eeee eeee eeee eeee
*
0024340 0000 0000 0000 0000 0000 0000 0000 0000
*
0024380 eeee eeee eeee eeee eeee eeee eeee eeee
*
00243c0 0000 0000 0000 0000 0000 0000 0000 0000
*
0024400 eeee eeee eeee eeee eeee eeee eeee eeee
*
0024540 0000 0000 0000 0000 0000 0000 0000 0000
*
0024580 eeee eeee eeee eeee eeee eeee eeee eeee
*
00245c0 0000 0000 0000 0000 0000 0000 0000 0000
*
0024600 eeee eeee eeee eeee eeee eeee eeee eeee
*
0024740 0000 0000 0000 0000 0000 0000 0000 0000
*
0024780 eeee eeee eeee eeee eeee eeee eeee eeee
*
00247c0 0000 0000 0000 0000 0000 0000 0000 0000
*
0024800 eeee eeee eeee eeee eeee eeee eeee eeee
*
0024940 0000 0000 0000 0000 0000 0000 0000 0000
*
0024980 eeee eeee eeee eeee eeee eeee eeee eeee
*
00249c0 0000 0000 0000 0000 0000 0000 0000 0000
*
0024a00 eeee eeee eeee eeee eeee eeee eeee eeee
*
0024b40 0000 0000 0000 0000 0000 0000 0000 0000
*
0024b80 eeee eeee eeee eeee eeee eeee eeee eeee
*
0024bc0 0000 0000 0000 0000 0000 0000 0000 0000
*
0024c00 eeee eeee eeee eeee eeee eeee eeee eeee
*
0024d40 0000 0000 0000 0000 0000 0000 0000 0000
*
0024d80 eeee eeee eeee eeee eeee eeee eeee eeee
*
0024dc0 0000 0000 0000 0000 0000 0000 0000 0000
*
0024e00 eeee eeee eeee eeee eeee eeee eeee eeee
*
0024f40 0000 0000 0000 0000 0000 0000 0000 0000
*
0024f80 eeee eeee eeee eeee eeee eeee eeee eeee
*
0024fc0 0000 0000 0000 0000 0000 0000 0000 0000
*
0025000 eeee eeee eeee eeee eeee eeee eeee eeee
*
0025140 0000 0000 0000 0000 0000 0000 0000 0000
*
0025180 eeee eeee eeee eeee eeee eeee eeee eeee
*
00251c0 0000 0000 0000 0000 0000 0000 0000 0000
*
0025200 eeee eeee eeee eeee eeee eeee eeee eeee
*
0025340 0000 0000 0000 0000 0000 0000 0000 0000
*
0025380 eeee eeee eeee eeee eeee eeee eeee eeee
*
00253c0 0000 0000 0000 0000 0000 0000 0000 0000
*
0025400 eeee eeee eeee eeee eeee eeee eeee eeee
*
0025540 0000 0000 0000 0000 0000 0000 0000 0000
*
0025580 eeee eeee eeee eeee eeee eeee eeee eeee
*
00255c0 0000 0000 0000 0000 0000 0000 0000 0000
*
0025600 eeee eeee eeee eeee eeee eeee eeee eeee
*
0025740 0000 0000 0000 0000 0000 0000 0000 0000
*
0025780 eeee eeee eeee eeee eeee eeee eeee eeee
*
00257c0 0000 0000 0000 0000 0000 0000 0000 0000
*
0025800 eeee eeee eeee eeee eeee eeee eeee eeee
*
0025940 0000 0000 0000 0000 0000 0000 0000 0000
*
0025980 eeee eeee eeee eeee eeee eeee eeee eeee
*
00259c0 0000 0000 0000 0000 0000 0000 0000 0000
*
0025a00 eeee eeee eeee eeee eeee eeee eeee eeee
*
0025b40 0000 0000 0000 0000 0000 0000 0000 0000
*
0025b80 eeee eeee eeee eeee eeee eeee eeee eeee
*
0025bc0 0000 0000 0000 0000 0000 0000 0000 0000
*
0025c00 eeee eeee eeee eeee eeee eeee eeee eeee
*
0025d40 0000 0000 0000 0000 0000 0000 0000 0000
*
0025d80 eeee eeee eeee eeee eeee eeee eeee eeee
*
0025dc0 0000 0000 0000 0000 0000 0000 0000 0000
*
0025e00 eeee eeee eeee eeee eeee eeee eeee eeee
*
0025f40 0000 0000 0000 0000 0000 0000 0000 0000
*
0025f80 eeee eeee eeee eeee eeee eeee eeee eeee
*
0025fc0 0000 0000 0000 0000 0000 0000 0000 0000
*
0026000 eeee eeee eeee eeee eeee eeee eeee eeee
*
0027200 0000 0000 0000 0000 0000 0000 0000 0000
*
0028000 eeee eeee eeee eeee eeee eeee eeee eeee
*
0029200 0000 0000 0000 0000 0000 0000 0000 0000
*
002a000 eeee eeee eeee eeee eeee eeee eeee eeee
*
002b200 0000 0000 0000 0000 0000 0000 0000 0000
*
002c000 eeee eeee eeee eeee eeee eeee eeee eeee
*
002d200 0000 0000 0000 0000 0000 0000 0000 0000
*
002e000 eeee eeee eeee eeee eeee eeee eeee eeee
*
002f200 0000 0000 0000 0000 0000 0000 0000 0000
*
0030000 eeee eeee eeee eeee eeee eeee eeee eeee
*
0031200 0000 0000 0000 0000 0000 0000 0000 0000
*
0032000 eeee eeee eeee eeee eeee eeee eeee eeee
*
0033200 0000 0000 0000 0000 0000 0000 0000 0000
*
0034000 eeee eeee eeee eeee eeee eeee eeee eeee
*
0035200 0000 0000 0000 0000 0000 0000 0000 0000
*
0036000 eeee eeee eeee eeee eeee eeee eeee eeee
*
0037200 0000 0000 0000 0000 0000 0000 0000 0000
*
0038000 eeee eeee eeee eeee eeee eeee eeee eeee
*
0039200 0000 0000 0000 0000 0000 0000 0000 0000
*
003a000 eeee eeee eeee eeee eeee eeee eeee eeee
*
003b200 0000 0000 0000 0000 0000 0000 0000 0000
*
003c000 eeee eeee eeee eeee eeee eeee eeee eeee
*
003d200 0000 0000 0000 0000 0000 0000 0000 0000
*
003e000 eeee eeee eeee eeee eeee eeee eeee eeee
*
003f200 0000 0000 0000 0000 0000 0000 0000 0000
*
0040000 eeee eeee eeee eeee eeee eeee eeee eeee
*
0041200 0000 0000 0000 0000 0000 0000 0000 0000
*
0042000 eeee eeee eeee eeee eeee eeee eeee eeee
*
0043200 0000 0000 0000 0000 0000 0000 0000 0000
*
0044000 eeee eeee eeee eeee eeee eeee eeee eeee
*
0045200 0000 0000 0000 0000 0000 0000 0000 0000
*
0046000 eeee eeee eeee eeee eeee eeee eeee eeee
*
0047200 0000 0000 0000 0000 0000 0000 0000 0000
*
0048000 eeee eeee eeee eeee eeee eeee eeee eeee
*
0049200 0000 0000 0000 0000 0000 0000 0000 0000
*
004a000 eeee eeee eeee eeee eeee eeee eeee eeee
*
004a140 0000 0000 0000 0000 0000 0000 0000 0000
*
004a180 eeee eeee eeee eeee eeee eeee eeee eeee
*
004a1c0 0000 0000 0000 0000 0000 0000 0000 0000
*
004a200 eeee eeee eeee eeee eeee eeee eeee eeee
*
004a340 0000 0000 0000 0000 0000 0000 0000 0000
*
004a380 eeee eeee eeee eeee eeee eeee eeee eeee
*
004a3c0 0000 0000 0000 0000 0000 0000 0000 0000
*
004a400 eeee eeee eeee eeee eeee eeee eeee eeee
*
004a540 0000 0000 0000 0000 0000 0000 0000 0000
*
004a580 eeee eeee eeee eeee eeee eeee eeee eeee
*
004a5c0 0000 0000 0000 0000 0000 0000 0000 0000
*
004a600 eeee eeee eeee eeee eeee eeee eeee eeee
*
004a740 0000 0000 0000 0000 0000 0000 0000 0000
*
004a780 eeee eeee eeee eeee eeee eeee eeee eeee
*
004a7c0 0000 0000 0000 0000 0000 0000 0000 0000
*
004a800 eeee eeee eeee eeee eeee eeee eeee eeee
*
004a940 0000 0000 0000 0000 0000 0000 0000 0000
*
004a980 eeee eeee eeee eeee eeee eeee eeee eeee
*
004a9c0 0000 0000 0000 0000 0000 0000 0000 0000
*
004aa00 eeee eeee eeee eeee eeee eeee eeee eeee
*
004ab40 0000 0000 0000 0000 0000 0000 0000 0000
*
004ab80 eeee eeee eeee eeee eeee eeee eeee eeee
*
004abc0 0000 0000 0000 0000 0000 0000 0000 0000
*
004ac00 eeee eeee eeee eeee eeee eeee eeee eeee
*
004ad40 0000 0000 0000 0000 0000 0000 0000 0000
*
004ad80 eeee eeee eeee eeee eeee eeee eeee eeee
*
004adc0 0000 0000 0000 0000 0000 0000 0000 0000
*
004ae00 eeee eeee eeee eeee eeee eeee eeee eeee
*
004af40 0000 0000 0000 0000 0000 0000 0000 0000
*
004af80 eeee eeee eeee eeee eeee eeee eeee eeee
*
004afc0 0000 0000 0000 0000 0000 0000 0000 0000
*
004b000 eeee eeee eeee eeee eeee eeee eeee eeee
*
004b140 0000 0000 0000 0000 0000 0000 0000 0000
*
004b180 eeee eeee eeee eeee eeee eeee eeee eeee
*
004b1c0 0000 0000 0000 0000 0000 0000 0000 0000
*
0060000

11

I took the 0xee data, 0xee data = 240000, Same result as 300* 200 *4,but I don’t know how to sort it

12

I thought NVBUF_LAYOUT_BLOCK_LINEAR should be all of 0xee, And there is no have 0x00

13

Hi,
The blocklinear format is private. Please use pitch linear.

15

Private way, I also want to know the arrangement, because I see that the previous data are all linearly arranged, matching the type of data I want

16

Hi,
We are not able to provide information about block linear. Please use pitch linear.

17

Okay, thanks for your answer.

18

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