Error handling in encoder for width setting (AcademySoftwareFoundation#69)

* Error handling in encoder for width setting
* For --input-csp 2, -w should be a multiple of 2

* move width check in encoder to check_conf() function
* invalid configuration check of --input-csp 2 and -w non-multiple of 2
moved to the check_conf() function

* Update readme (AcademySoftwareFoundation#67)

* updated imhex screenshot compatible with version 4

Signed-off-by: kp5.choi@samsung.com <kp5.choi@samsung.com>

* updated README

Signed-off-by: kp5.choi@samsung.com <kp5.choi@samsung.com>

* fixed invalid operation incase of y4m input

Signed-off-by: kp5.choi@samsung.com <kp5.choi@samsung.com>

---------

Signed-off-by: kp5.choi@samsung.com <kp5.choi@samsung.com>
Signed-off-by: subhrajitm20 <2003subhrajit@gmail.com>

* Error handling in encoder for width setting
* For --input-csp 2, -w should be a multiple of 2

Signed-off-by: subhrajitm20 <2003subhrajit@gmail.com>

* move width check in encoder to check_conf() function
* invalid configuration check of --input-csp 2 and -w non-multiple of 2
moved to the check_conf() function

Signed-off-by: subhrajitm20 <2003subhrajit@gmail.com>

* Enclosing check code in for loop of max_num_frms
* This will allow flexible implementation of multiple frames encoding in
near future

Signed-off-by: subhrajitm20 <2003subhrajit@gmail.com>

* Using existing for loop for handling invalid width

Signed-off-by: subhrajitm20 <2003subhrajit@gmail.com>

* Bug fix: updating FRM_IDX to loop parameter

Signed-off-by: Subhrajit Mishra <84323996+subhrajitm20@users.noreply.github.com>

---------

Signed-off-by: kp5.choi@samsung.com <kp5.choi@samsung.com>
Signed-off-by: subhrajitm20 <2003subhrajit@gmail.com>
Signed-off-by: Subhrajit Mishra <84323996+subhrajitm20@users.noreply.github.com>
Co-authored-by: kpchoi <kp5.choi@samsung.com>

Author: subhrajitm20

app/oapv_app_enc.c

@@ -326,6 +326,11 @@ static int check_conf(oapve_cdesc_t *cdesc, args_var_t *vars)
 {
     int i;
     for(i = 0; i < cdesc->max_num_frms; i++) {
+        // ensure frame width multiple of 2 in case of 422 format
+        if ((vars->input_csp == 2) && (cdesc->param[i].w & 0x1)) {
+            logerr("%d-th frame's width should be a multiple of 2 for '--input-csp 2'\n", i);
+            return -1;
+        }
         if(vars->hash && strlen(vars->fname_rec) == 0) {
             logerr("cannot use frame hash without reconstructed picture option!\n");
             return -1;