Some question about ipipeif and ipipe(DM355 VPFE)

Guo Hongjian,

You need to give detailed explanation of your setup and objective. Then, engineers can answer questions comprehensively

hongjian guo said:

1 How to configure ipipeif and ipipe register when the input data format is YUV?

It is a very broad question. You need to refer to dm355 vpfe user guide for the same. Also you can refer arago source.

hongjian guo said:

2 What is the difference between config - > ipipeif_param.source = CCDC ( 0) and config - > ipipeif_param.source = SDRAM_YUV ( 3)?

IPIPEIF can take video data from CCDC which in-turn takes video data from a SD/HD decoder or a CAMERA(this is continuous mode f working). IPIPEIF can also read video data from memory(this single shot mode). Hope this helps.

hongjian guo said:

3 If config - > ipipeif_param.source = CCDC, the image can only appear the green and purple, why?

You have to make sure that CCDC is configured properly along with SD/HD decoder or CAMERA which is feeding CCDC

hongjian guo said:

4.How the gain parameters of the ipipeif impact on YUV data?

Not sure about this, please refer to dm365 vpfe user guide.

Hi,

Thank you for your answer.

Our camera’ signal format is the YUV422. The IPIPE need to be configured to operate in a resize only mode, which allows YCbCr-4:2:2 to be resized without applying the processing of every module in the IPIPE.

Now, If config - > ipipeif_param.source = CCDC, the image can only appear the green and purple. And according to the test, I found that the gain parameters register of ipipeif have effect on the image, However, the vpfe document introduced to " These bits don ' t influence Data of YCC.", so I do not understand to this.      And if the data directly into the SDRAM ( ccdc_setfbaddr ( ( ( unsigned long ) ( vpfe - > curFrm - > boff ) ) ); ),  the image is clear and normal.

I would like to ask, if the singal format is YUV422,can we configure that” config - > ipipeif_param.source = CCDC”?

I configure register as this：

.ipipeif_param = {

                            /*IPPEIF config register*/

                            .data_shift = BITS11_0,//wu

                            .clock_select = PIXCEL_CLK

                            .ialaw = ALAW_OFF,

                            .pack_mode = SIXTEEN_BIT,

                            .avg_filter = AVG_OFF,

                            .clk_div = DIVIDE_FOURTH,//

                            .source = CCDC,//add by ghj

                            .decimation = DECIMATION_OFF,

                            .mode = CONTINUOUS,//ONE_SHOT,

                            .glob_hor_size = 1280+8,

                            .glob_ver_size = 720+10,

                            .hnum = 1280,//wu

                            .vnum = 720,//wu

                            .adofs = 1280 * 2,/*1248,  to make it 32 alligned */

                            .rsz = ONE,   /* resize ratio = 16/rsz:  valid range (16-112) */

                            .gain = 0x200    /* (precision is U10Q9) */wu

       },

       .ipipe_mode = CONTINUOUS,//ONE_SHOT,

       /*input/output datapath register*/

       .ipipe_dpaths_fmt = YUV2YUV,//add by ghj

       .ipipe_dpaths_bypass = RAW_MODE_OFF,//...check

       /*color pattern register*//

    .ipipe_colpat_elep = BLUE,         ipipe_colpat_elop = GREEN_BLUE,

    .ipipe_colpat_olep = GREEN_RED,    .ipipe_colpat_olop = RED,

       /*horizontal/vertical start, horizontal/vertical size*/

       .ipipe_vst = 1,//add by ghj

       .ipipe_vsz = 720-1,

       .ipipe_hst = 0,//add by ghj

       .ipipe_hsz = 1280-1,

/*interupt generation after lines*/

……               

      .edge_enhancer = {

                            .yee_en =  DISABLE,

                             .yee_emf = DISABLE,

                             .yee_shf = 4,          

                                   .yee_mul_00 = 48,

                             .yee_mul_01 = 12,

                             .yee_mul_02 = 1014,

                             .yee_mul_10 = 12,

                             .yee_mul_11 = 0,

                             .yee_mul_12 = 1018,

                             .yee_mul_20 = 1014,

                             .yee_mul_21 = 1018,

                             .yee_mul_22 = 1022,

                             .ee_table =NULL// (unsigned int*) yeeTable

                      },

       .false_color_suppresion = {

                               .fcs_en =        ENABLE, // Uint8 csupEnable//add by ghj//

                                 .fcs_typ_typ = 0,/

                                 .fcs_shf_y = 0,//03

                                 .fcs_shf_c = 7,//07

                                 .fcs_thr = 235,//01FFh

                                 .fcs_sgn = 0,//0-1FFh

                                 .fcs_lth = 0//0-1FFh

                              },

       .rsz_seq_seq = DISABLE,

       .rsz_seq_tmm = DISABLE,//output confined mode (normal mode)

       .rsz_seq_hrv = DISABLE,

       .rsz_seq_vrv = DISABLE,

       .rsz_seq_crv = DISABLE,

       .rsz_aal = ENABLE,//

       .rsz_rsc_param ={

                       {

                              .rsz_mode = CONTINUOUS,

                              .rsz_i_vst = 0,

                              .rsz_i_vsz = 0,

                              .rsz_i_hst = 0,

                                    .rsz_o_vsz = 720-1,

                              .rsz_o_hsz = 1280-1,

                                    .rsz_o_hst = 0,

                              .rsz_v_phs = 0,

                              //unsigned int rsz_v_phs_o;

                              .rsz_v_dif = 256,

                                   //unsigned int rsz_v_siz_o;

                              .rsz_h_phs = 0,

                              .rsz_h_dif = 256,

                              .rsz_h_typ = CUBIC,

                              .rsz_h_lse_sel = INTERNAL_VALUE,

                              .rsz_h_lpf = 0

                          },

                          {

                              .rsz_mode = CONTINUOUS,

                              .rsz_i_vst = 0,

                              .rsz_i_vsz = 0,

                              .rsz_i_hst = 0,

                                    .rsz_o_vsz = 192-1,

                              .rsz_o_hsz = 352-1,

                                    .rsz_o_hst = 0,

                              .rsz_v_phs = 0,

                              //unsigned int rsz_v_phs_o;

                              .rsz_v_dif = 930,

                                   //unsigned int rsz_v_siz_o;

                              .rsz_h_phs = 0,

                              .rsz_h_dif = 930,

                              .rsz_h_typ = CUBIC,

                              .rsz_h_lse_sel = INTERNAL_VALUE,

                              .rsz_h_lpf = 0

                          }

                     },

       .rsz2rgb = {

                     {

                            .rsz_rgb_en = DISABLE,//....check

              /*            .rsz_rgb_typ = 0

                            .rsz_rgb_msk0 = 0,

                            .rsz_rgb_msk1 = 0,

                            .rsz_rgb_alpha_val = 0 */

                        },

                     {

                            .rsz_rgb_en = DISABLE,//....check

                     }

                 },

       .ext_mem_param = {

                         {

                           .rsz_sdr_bad_h = 0,

                           .rsz_sdr_bad_l = 0,

                           .rsz_sdr_sad_h = 0,

                           .rsz_sdr_sad_l = 0,

                           .rsz_sdr_oft = 1280 * 2,

                           .rsz_sdr_ptr_s = 0,

                          .rsz_sdr_ptr_e = 720

                     },

                      {

                           .rsz_sdr_bad_h = 0,

                           .rsz_sdr_bad_l = 0,

                           .rsz_sdr_sad_h = 0,

                           .rsz_sdr_sad_l = 0,

                           .rsz_sdr_oft = 352 * 2,

                           .rsz_sdr_ptr_s = 0,

                          .rsz_sdr_ptr_e = 192

                     },

                      },

       .rsz_en[0] = ENABLE,

       .rsz_en[1] = ENABLE

Regards