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DM8168显示问题疑问咨询

Eric Mao
Intellectual 925 points


对于DM8168 dvrrdk3.0的显示问题有几个疑问：

1、rdk中的display id代表的具体物理端口。VDIS_DEV_HDMI、VDIS_DEV_HDCOMP、VDIS_DEV_DVO2、VDIS_DEV_SD、VDIS_SYSFS_HDMI、VDIS_SYSFS_DVO2、VDIS_SYSFS_SD、VDIS_SYSFS_HDCOMP。

2、官方evm板的9022口输出，是否支持rgb或者yuv444输出？ 直接用dvrrdk3.0 demo中的Vdec_Vdis这个demo跑的，图像偏绿，在Vdis_params_init函数中修改语句为pContext->deviceParams[VDIS_DEV_HDCOMP].outputInfo.dataFormat = SYSTEM_DF_RGB24_888;， 显示还是不正确，请问下是什么方面的原因？

  • 0
    TI__Genius 12210 points

    2、官方evm板的9022口输出，是否支持rgb或者yuv444输出？ 直接用dvrrdk3.0 demo中的Vdec_Vdis这个demo跑的，图像偏绿，在Vdis_params_init函数中修改语句为pContext->deviceParams[VDIS_DEV_HDCOMP].outputInfo.dataFormat = SYSTEM_DF_RGB24_888;， 显示还是不正确，请问下是什么方面的原因？\

     在TRM手册中，有下面的描述：

    2.1.5.5 High Definition/Standard Definition (HD/SD) Video Signal Encoding Features (Video Displays)
    • A single HDMI 1.3 compliant interface
    • Two DVO (VOUT) interfaces that support up to 1080p@60 Hz, 8/16/24 YCbCr/RGB formats are included.
    • VOUT0 supports up to 10/20/30-bit and VOUT1 supports only 20-bit.
    • Each VOUT port supports both embedded and separated sync outputs.
    • HD Component: meets all requirements defined in CEA 770.3-D.
    • SD Composite/S-video (NTSC/PAL): meets all requirements defined in ITU-R BT.470-6 (TBD: SECAM support).
    • Supported VESA resolutions up to 165 MHz. Note that the maximum supported line width is 1920 pixels. Furthermore, width and height values must always be an even number.
    • Support Simultaneous HD and SD output.
    • 2 video clocks to support two independent HD displays, the clock of third HD display will be tied to one
    of the other two.

    关于si9022的驱动，请参考一下http://processors.wiki.ti.com/index.php/TI811X_PSP_HDMI_Sii9022a_Transmitter_Driver_User_Guide