minor fixes

* downscaling latency bump fix
* enforce vm_table reloading upon profile read

software/sys_controller/av_controller.c

@@ -448,7 +448,6 @@ void update_sc_config(mode_data_t *vm_in, mode_data_t *vm_out, vm_proc_config_t
     hv_in_config3.v_synclen = vm_in->timings.v_synclen;
     hv_in_config2.v_backporch = vm_in->timings.v_backporch;
     hv_in_config2.interlaced = vm_in->timings.interlaced;
-    hv_in_config3.v_startline = vm_in->timings.v_synclen+vm_in->timings.v_backporch+12;
     hv_in_config2.h_skip = vm_conf->h_skip;
     hv_in_config2.h_sample_sel = vm_conf->h_sample_sel;
 
@@ -534,6 +533,15 @@ void update_sc_config(mode_data_t *vm_in, mode_data_t *vm_out, vm_proc_config_t
         sl_config3.sl_c_overlay = 0;
     }
 
+    h_blank = vm_out->timings.h_total-vm_conf->x_size;
+    v_blank = (vm_out->timings.v_total>>vm_out->timings.interlaced)-vm_conf->y_size;
+    h_frontporch = h_blank-vm_conf->x_offset-vm_out->timings.h_backporch-vm_out->timings.h_synclen;
+    v_frontporch = v_blank-vm_conf->y_offset-vm_out->timings.v_backporch-vm_out->timings.v_synclen;
+
+    // VIP frame reader swaps buffers at the end of read frame while writer apparently does it just before frame to be written (?)
+    // SOF needs to be offset accordingly to minimize FB latency
+    hv_in_config3.v_startline = vm_in->timings.v_synclen+vm_in->timings.v_backporch+20+((v_frontporch*100*vm_in->timings.v_total)/(100*vm_out->timings.v_total));
+
     sc->hv_in_config = hv_in_config;
     sc->hv_in_config2 = hv_in_config2;
     sc->hv_in_config3 = hv_in_config3;
@@ -645,11 +653,6 @@ void update_sc_config(mode_data_t *vm_in, mode_data_t *vm_out, vm_proc_config_t
     //vip_fb->locked = vm_conf->framelock;  // causes cvo fifo underflows
     vip_fb->locked = 0;
 
-    h_blank = vm_out->timings.h_total-vm_conf->x_size;
-    v_blank = (vm_out->timings.v_total>>vm_out->timings.interlaced)-vm_conf->y_size;
-    h_frontporch = h_blank-vm_conf->x_offset-vm_out->timings.h_backporch-vm_out->timings.h_synclen;
-    v_frontporch = v_blank-vm_conf->y_offset-vm_out->timings.v_backporch-vm_out->timings.v_synclen;
-
     if ((vip_cvo->h_active != vm_conf->x_size) ||
         (vip_cvo->v_active != vm_conf->y_size) ||
         (vip_cvo->h_synclen != vm_out->timings.h_synclen) ||

software/sys_controller/src/menu.c

@@ -1002,7 +1002,7 @@ void cstm_profile_load(menucode_id code, int setup_disp) {
             row_mask[0] |= (1<<(i+2));
         }
 
-        sniprintf((char*)osd->osd_array.data[i+3][0], OSD_CHAR_COLS, "< Prev        Next >");
+        sniprintf((char*)osd->osd_array.data[i+3][0], OSD_CHAR_COLS, "< Prev       Next >");
         row_mask[0] |= (3<<(i+2));
 
         osd->osd_sec_enable[0].mask = row_mask[0];

software/sys_controller/src/userdata.c

@@ -43,6 +43,7 @@ extern mode_data_t video_modes_plm[];
 extern mode_data_t video_modes[];
 extern smp_preset_t smp_presets[];
 extern sync_timings_t hdmi_timings[NUM_VIDEO_GROUPS];
+extern uint8_t update_cur_vm;
 
 char target_profile_name[USERDATA_NAME_LEN+1], cur_profile_name[USERDATA_NAME_LEN+1];
 
@@ -290,6 +291,9 @@ int read_userdata(uint8_t entry, int dry_run) {
         bytes_read += item_hdr.data_size;
     }
 
+    if (hdr.type == UDE_PROFILE)
+        update_cur_vm = 1;
+
     strlcpy(cur_profile_name, target_profile_name, USERDATA_NAME_LEN+1);
     printf("%lu bytes read from userdata entry %u\n", bytes_read, entry);
 
@@ -452,6 +456,9 @@ int read_userdata_sd(uint8_t entry, int dry_run) {
             f_lseek(&p_file, bytes_read_tot);
     }
 
+    if (hdr.type == UDE_PROFILE)
+        update_cur_vm = 1;
+
     strlcpy(cur_profile_name, target_profile_name, USERDATA_NAME_LEN+1);
     printf("%u bytes read from userdata entry %u\n", bytes_read_tot, entry);
 

software/sys_controller/src/video_modes.c

@@ -1070,8 +1070,10 @@ int get_pure_lm_mode(avconfig_t *cc, mode_data_t *vm_in, mode_data_t *vm_out, vm
     else if (mindiff_lm & (MODE_L3_256_COL|MODE_L6_256_COL))
         vm_conf->x_rpt = cc->ar_256col ? 2 : 3;
 
-    if (mindiff_lm & (MODE_L3_320_COL|MODE_L2_240x360|MODE_L3_240x360))
+    if (mindiff_lm & (MODE_L3_320_COL|MODE_L2_240x360))
         vm_conf->x_rpt--;
+    else if (mindiff_lm & MODE_L3_240x360)
+        vm_conf->x_rpt -= 2;
 
     if (mindiff_lm == MODE_L2_240x360) {
         vm_out->timings.h_active += 80;