capture speed in AM5xx

What's you test setup? If it's AM57x GP EVM with the sensor board that it comes with (MT9T111), then the limitation is coming from sensor speed. It supports 1080p around 14 fps. I don't know how your rest of the setup between profiling that's causing the perfromance to 7 fps.

hi manisha,

Many thanks for your response.

After checking MT9T111's datasheet from below
www.digchip.com/.../MT9T111-pdf.php

we found the following description
The MT9T111 image sensor can be programmed to output progressive-scan images at up to 30 fps in preview/power-saving mode and 15 fps in fullresolution (QXGA) mode.

And we check the current mode
root@am57xx-evm:~# v4l2-ctl --get-fmt-video -d /dev/video1
Format Video Capture:
Width/Height : 1920/1080
Pixel Format : 'NV24'
Field : None
Bytes per Line: 1920
Size Image : 4147200
Colorspace : Broadcast NTSC/PAL (SMPTE170M/ITU601)
Flags :
root@am57xx-evm:~#


root@am57xx-evm:~# v4l2-ctl --list-formats-ext -d /dev/video1
ioctl: VIDIOC_ENUM_FMT
Index : 0
Type : Video Capture
Pixel Format: 'NV24'
Name : NV24 YUV 444 co-planar
Size: Discrete 2048x1536
Interval: Discrete 0.033s (30.000 fps)
Size: Discrete 1920x1200
Size: Discrete 1920x1080

root@am57xx-evm:~/201# v4l2-ctl --get-parm -d /dev/video1
Streaming Parameters Video Capture:
Capabilities : timeperframe
Frames per second: 30.000 (30/1)
Read buffers : 4

Because the current setting is 1920x1080, it should output 30fps.

But it seems to conflict with your speaking ( It supports 1080p around 14 fps. ), is there something wrong ??

Thanks

hi manisha,

I don't know how your rest of the setup between profiling that's causing the perfromance to 7 fps.
> Hereunder is how I test

1. follow processors.wiki.ti.com/.../Processor_SDK_Building_The_SDK to generat capturevpedisplay demo
2. add timing-measurement as below inside main() in omapdrmtest/1.0.0-r8/git/capturevpedisplay.c

vpe->field = V4L2_FIELD_ANY;
while (1)
{
gettimeofday(&PreviousTime,NULL); //added by HeartBreak
index = vip_dqbuf(vpe);
gettimeofday(&CurrentTime,NULL); //added by HeartBreak

vpe_input_qbuf(vpe, index);

if (!doOnce) {
count ++;
for (i = 1; i <= NUMBUF; i++) {
/** To star deinterlace, minimum 3 frames needed */
if (vpe->deint && count != 3) {
index = vip_dqbuf(vpe);
vpe_input_qbuf(vpe, index);
} else {
stream_ON(vpe->fd, V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
doOnce = 1;
printf("streaming started...\n");
break;
}
count ++;
}
}

index = vpe_output_dqbuf(vpe);
display_buffer(vpe, index);
vpe_output_qbuf(vpe, index);

index = vpe_input_dqbuf(vpe);
vip_qbuf(vpe, index);

//added by HeartBreak
diff = ( (CurrentTime.tv_sec*1000000+CurrentTime.tv_usec) - (PreviousTime.tv_sec*1000000 + PreviousTime.tv_usec) );
printf("diff = %d\n", diff);

}

and the result are shown (the unit is us)
diff = 149127
diff = 149140
diff = 149133
diff = 149121
diff = 149151
diff = 149128
diff = 149129
diff = 149145
diff = 149132
diff = 149152
diff = 149132
diff = 149134
diff = 149143
diff = 149149
diff = 149117
diff = 149145
diff = 149131
diff = 149136

Please let me know if any problem

Thanks

hi experts,

In our application, we need to verify if the VIP's speed could really achieve 30/60 fps. 

Any comment ??

Thanks

VIP can achieve 1080p60 fps. As mentioned, the sensor board on GP EVM supports only 1080p ~14 fps.