data2/text/DLP/1024368.txt

Ticket Name: TDA2SX: How to use VIP to receive 576I image?

Query Text:
Part Number: TDA2SX Other Parts Discussed in Thread: TVP5158, TVP5154, TDA2 Hi expert, Our company uses a custom board with SDK0305. The requirement is to receive 720*576I 4CH standard images. Q1:How can I make VIP capture receive 25 frame? If possible, Please provide suggestions for modification. Q2:I saw the 1CH TVP5158 driver in the SDK, Can I use TVP5158 driver to receive TVP5154? If possible, can I change it to 4CH? Q3:I am curious about the 25fps or 50field that Capture will receive?

Responses:
Hi, Wu YiTing said: Q1:How can I make VIP capture receive 25 frame? If possible, Please provide suggestions for modification. fps is controlled by your pixel clock, so as long as pixel clock is correct, VIP would be able to capture 25fps. Wu YiTing said: Q2:I saw the 1CH TVP5158 driver in the SDK, Can I use TVP5158 driver to receive TVP5154? If possible, can I change it to 4CH? Yes, you can, but you would require to bring it up. Wu YiTing said: Q3:I am curious about the 25fps or 50field that Capture will receive? Capture will receive individual fields and so it will also store field and give callbacks on fields capture. Application would have to merge them and create frames out of them. Regards, Brijesh

fps is controlled by your pixel clock, so as long as pixel clock is correct, VIP would be able to capture 25fps. -> I measured the TVP5154 to be 27MHZ. Is this standard? In fact, we have TP2824 decoder pixcel clock output is 37.125MHZ, can VIP receive it correctly? Yes, you can, but you would require to bring it up. -> I have tried to use TVP5158 driver to receive TVP5154 images but it fails. Can you guide me to achieve it? Capture will receive individual fields and so it will also store field and give callbacks on fields capture. Application would have to merge them and create frames out of them. -> So the Capture driver will merge the fields into Frames, and then send the New data to the Capture link, right? Then I print the Capture link information and see that it should be 25fps, right?

Wu YiTing said: -> I measured the TVP5154 to be 27MHZ. Is this standard? In fact, we have TP2824 decoder pixcel clock output is 37.125MHZ, can VIP receive it correctly? Yes, it should be fine, as long as HS and VS are correct. Wu YiTing said: -> So the Capture driver will merge the fields into Frames, and then send the New data to the Capture link, right? No, driver or link will not merge the fields. It has to be done in the application. Regards, Brijesh

No, driver or link will not merge the fields. It has to be done in the application. -> Does TI provide an application for merging?

I have tried to use TVP5158 driver to receive TVP5154 images but it fails. Do I need to modify some VIP settings in these files? I use PROCESSOR_SDK_VISION_03_05_00_00 The following are my setup steps Step1: Select usecase C:\PROCESSOR_SDK_VISION_03_05_00_00\vision_sdk\apps\src\rtos\usecases\vip_single_cam_view Step2: Make sure that Pinmux is configured correctly Step3: Select CHAINS_CAPTURE_SRC_VIDDEC_TVP5158 Step4: captureOutWidth 720, captureOutHeight 576 Step5: Chain_Create Step6: Chain_Start Step7: Initialize TVP5154 7-1// Write to all decoders 0XFE, 0X0F 7-2// write 0x00 to register 0x7F ==> initialize 5154 0X7F, 0X00 vip_single_cam_view.rar

This is the result of Capture link to Display link and then through HDMI 720P. Camera -> TVP5154 -> TDA2 -> HDMI pixcel clock 27MHZ Display link only received 1fps Camera -> TP2824 -> TDA2 -> HDMI pixcel clock 74.25MHZ Display link received 50fps and image is cropped Camera to monitor The yellow sticker indicates that the image is cropped after passing through TDA2

By the way TP2824 hardware: Output BT656. embedded 720*576I

Hi Brijesh Could you help to update? Thanks for your kindly help Daniel

Wu YiTing said: -> Does TI provide an application for merging? No, It has to be done in the application. Wu YiTing said: Do I need to modify some VIP settings in these files? No this should work fine. Just make sure to configure VIP in single channel mode, since this use case might be configuring it in multi-channel mode. Wu YiTing said: Camera -> TVP5154 -> TDA2 -> HDMI pixcel clock 27MHZ Display link only received 1fps Are you configuring VIP in embedded sync format or discrete sync? can you first check if VIP is configured correctly by looking into register? Then check if VIP is detecting size correctly. Then check for fps. fps might be low because your link might.be returning frames in time. Regards, Brijesh

No, It has to be done in the application. -> I found the use case vip_single_rvc_cam_view_crcvpe VPE seems to be able to field merge this can be achieved? Are you configuring VIP in embedded sync format or discrete sync? can you first check if VIP is configured correctly by looking into register? Then check if VIP is detecting size correctly. Then check for fps. fps might be low because your link might.be returning frames in time. -> I use the default setting of TVP5158, which I think is embedded sync format, i will check the VIP size.

Wu YiTing said: -> I found the use case vip_single_rvc_cam_view_crcvpe VPE seems to be able to field merge this can be achieved? Yes, VPE can be used to convert field to frames, but please note it will make 60field -> 60frames. There is a DeInterlacer module in VPE, which can convert field to frames. Now if you want just 30frames/sec, then you could drop/ignore alternate frames at the output of VPE. Regards, Brijesh

How can I check if the Filed image is cropped? I think the size of the 576i field should be 720*288. There will be 50 fields per second. Can I check from the image?

Yes, VPE can be used to convert field to frames, but please note it will make 60field -> 60frames. There is a DeInterlacer module in VPE, which can convert field to frames. Now if you want just 30frames/sec, then you could drop/ignore alternate frames at the output of VPE. -> Have you implemented field merge with VPE?

Hi Brijesh, Please help me understand pInprms->dataFormat, pOutprms->dataFormat, my VIP input format is YUV422I, but why I have to set the following to see the correct color picture "indata formate = SYSTEM_DF_YUV422P outdata formate = SYSTEM_DF_YUV422I_YUYV"

Hi Wu YiTing, Wu YiTing said: There will be 50 fields per second. Can I check from the image? You could save image and check it out. I dont see any other way. But before that, can you please check if captured image size reported by VIP is correct? Wu YiTing said: -> Have you implemented field merge with VPE? No, please refer to existing usease Wu YiTing said: Please help me understand pInprms->dataFormat, pOutprms->dataFormat, my VIP input format is YUV422I, but why I have to set the following to see the correct color picture "indata formate = SYSTEM_DF_YUV422P outdata formate = SYSTEM_DF_YUV422I_YUYV" Input data format here means the format that VIP is receiving data. Here, YUV422P means, it is receiving YUV422 data. Output data format is storage format, so data is stored as YUV422 in UYVY format. Regards, Brijesh