海思3516将BT1120改BT656输出大小为720*576

sample_comm_vi.c结构体
VI_DEV_ATTR_S DEV_ATTR_BT656D1_1MUX

VI_DEV_ATTR_S DEV_ATTR_BT656D1_1MUX =
{/* interface mode */VI_MODE_BT656,/* multiplex mode */VI_WORK_MODE_1Multiplex,/* r_mask    g_mask    b_mask*/{0xFF0000,    0x0},//掩码根据自己实际写/* progessive or interleaving */VI_SCAN_INTERLACED,/*AdChnId*/{ -1, -1, -1, -1},/*enDataSeq, only support yuv*/VI_INPUT_DATA_UYVY,/* synchronization information */{/*port_vsync   port_vsync_neg     port_hsync        port_hsync_neg        */VI_VSYNC_FIELD, VI_VSYNC_NEG_HIGH, VI_HSYNC_VALID_SINGNAL, VI_HSYNC_NEG_HIGH, VI_VSYNC_VALID_SINGAL, VI_VSYNC_VALID_NEG_HIGH,/*hsync_hfb    hsync_act    hsync_hhb*/{0,            0,        0,/*vsync0_vhb vsync0_act vsync0_hhb*/0,            0,        0,/*vsync1_vhb vsync1_act vsync1_hhb*/0,            0,            0}},/* ISP bypass */VI_PATH_BYPASS,/* input data type */VI_DATA_TYPE_YUV,/* bReverse */HI_FALSE,/* DEV CROP */{0, 0, 720, 576}
};

修改函数SAMPLE_COMM_VI_StartBT656添加

            case SAMPLE_VI_MODE_1_D1:stCapRect.u32Width  = 720;stCapRect.u32Height = 576;break;

在SAMPLE_COMM_VI_StartDev(ViDev, enViMode)函数中修改判断语句

    if (  (SAMPLE_VI_MODE_BT1120_1080P != enViMode)&& (SAMPLE_VI_MODE_BT1120_1080I != enViMode)&& (SAMPLE_VI_MODE_1_D1 != enViMode)//添加&& (SAMPLE_VI_MODE_BT1120_720P != enViMode))

修改SAMPLE_COMM_VI_StartMIPI_BT1120 (SAMPLE_VI_MODE_E enViMode)函数

    if ((enViMode == SAMPLE_VI_MODE_BT1120_1080I)|| (enViMode == SAMPLE_VI_MODE_BT1120_720P)|| (enViMode == SAMPLE_VI_MODE_BT1120_1080P)){pstcomboDevAttr = &MIPI_BT1120_ATTR;}else{pstcomboDevAttr = &MIPI_BT1120_ATTR; //添加}

在SAMPLE_COMM_VI_StartDev函数添加

            HI_MPI_VI_DisableDev(ViDev);s32Ret = HI_MPI_VI_SetWDRAttr(ViDev, &stWdrAttr);if (s32Ret){SAMPLE_PRT("HI_MPI_VI_SetWDRAttr failed with %#x!\n", s32Ret);return HI_FAILURE;}

修改后，发现vi将采集的数据全部都丢掉，排查发现是由于配置vb（视频缓存池）不匹配
在这里插入图片描述
修改HI_S32 SAMPLE_COMM_SYS_GetPicSize函数

HI_S32 SAMPLE_COMM_SYS_GetPicSize(VIDEO_NORM_E enNorm, PIC_SIZE_E enPicSize, SIZE_S* pstSize)
{switch (enPicSize){case PIC_QCIF:pstSize->u32Width  = 176;pstSize->u32Height = (VIDEO_ENCODING_MODE_PAL == enNorm) ? 144 : 120;break;case PIC_CIF:pstSize->u32Width  = 352;pstSize->u32Height = (VIDEO_ENCODING_MODE_PAL == enNorm) ? 288 : 240;break;case PIC_D1:pstSize->u32Width  = 720;pstSize->u32Height = 576;//(VIDEO_ENCODING_MODE_PAL == enNorm) ? 576 : 480;break;