Revert "Decoder: Fixed initialization of first_slice_in_pic"

This reverts commit 8994f345da7b814677b5121654fa4c4e9718b0b7.

Change-Id: I4ff897ae7a89f92bfaaad80bc869b86752cf2a19
diff --git a/decoder/ih264d_api.c b/decoder/ih264d_api.c
index a543e24..9d0f348 100644
--- a/decoder/ih264d_api.c
+++ b/decoder/ih264d_api.c
@@ -1927,7 +1927,7 @@
     ps_dec->u2_cur_slice_num = 0;
     ps_dec->cur_dec_mb_num = 0;
     ps_dec->cur_recon_mb_num = 0;
-    ps_dec->u4_first_slice_in_pic = 1;
+    ps_dec->u4_first_slice_in_pic = 2;
     ps_dec->u1_first_pb_nal_in_pic = 1;
     ps_dec->u1_slice_header_done = 0;
     ps_dec->u1_dangling_field = 0;
diff --git a/decoder/ih264d_parse_headers.c b/decoder/ih264d_parse_headers.c
index 1403408..5fc38e3 100644
--- a/decoder/ih264d_parse_headers.c
+++ b/decoder/ih264d_parse_headers.c
@@ -1116,6 +1116,13 @@
                                                             == IDR_SLICE_NAL),
                                             u1_nal_ref_idc, ps_dec);
 
+                            if((ps_dec->u4_first_slice_in_pic != 0)&&
+                                ((ps_dec->ps_dec_err_status->u1_err_flag & REJECT_CUR_PIC) == 0))
+                            {
+                                /*  if the first slice header was not valid set to 1 */
+                                ps_dec->u4_first_slice_in_pic = 1;
+                            }
+
                             if(i_status != OK)
                             {
                                 return i_status;
diff --git a/decoder/ih264d_parse_pslice.c b/decoder/ih264d_parse_pslice.c
index 96841b4..efb94ad 100644
--- a/decoder/ih264d_parse_pslice.c
+++ b/decoder/ih264d_parse_pslice.c
@@ -1572,6 +1572,7 @@
                 }
             }
         }
+        ps_dec->u4_first_slice_in_pic = 0;
     }
     else
     {
diff --git a/decoder/ih264d_parse_slice.c b/decoder/ih264d_parse_slice.c
index 6a96ffa..11a317b 100644
--- a/decoder/ih264d_parse_slice.c
+++ b/decoder/ih264d_parse_slice.c
@@ -723,7 +723,6 @@
     ps_dec->u4_deblk_mb_y = 0;
     ps_dec->pu4_wt_ofsts = ps_dec->pu4_wts_ofsts_mat;
 
-    ps_dec->u4_first_slice_in_pic = 0;
     H264_MUTEX_UNLOCK(&ps_dec->process_disp_mutex);
     return OK;
 }
@@ -1160,44 +1159,6 @@
 
     COPYTHECONTEXT("SH: frame_num", u2_frame_num);
 //    H264_DEC_DEBUG_PRINT("Second field: %d frame num: %d prv_frame_num: %d \n", ps_dec->u1_second_field, u2_frame_num, ps_dec->u2_prv_frame_num);
-    if(!ps_dec->u1_first_slice_in_stream && ps_dec->u4_first_slice_in_pic)
-    {
-        pocstruct_t *ps_prev_poc = &ps_dec->s_prev_pic_poc;
-        pocstruct_t *ps_cur_poc = &ps_dec->s_cur_pic_poc;
-
-        ps_dec->u2_mbx = 0xffff;
-        ps_dec->u2_mby = 0;
-
-        if((0 == u1_is_idr_slice) && ps_cur_slice->u1_nal_ref_idc)
-            ps_dec->u2_prev_ref_frame_num = ps_cur_slice->u2_frame_num;
-
-        if(u1_is_idr_slice || ps_cur_slice->u1_mmco_equalto5)
-            ps_dec->u2_prev_ref_frame_num = 0;
-
-        if(ps_dec->ps_cur_sps->u1_gaps_in_frame_num_value_allowed_flag)
-        {
-            ih264d_decode_gaps_in_frame_num(ps_dec, u2_frame_num);
-        }
-
-        ps_prev_poc->i4_prev_frame_num_ofst = ps_cur_poc->i4_prev_frame_num_ofst;
-        ps_prev_poc->u2_frame_num = ps_cur_poc->u2_frame_num;
-        ps_prev_poc->u1_mmco_equalto5 = ps_cur_slice->u1_mmco_equalto5;
-        if(ps_cur_slice->u1_nal_ref_idc)
-        {
-            ps_prev_poc->i4_pic_order_cnt_lsb = ps_cur_poc->i4_pic_order_cnt_lsb;
-            ps_prev_poc->i4_pic_order_cnt_msb = ps_cur_poc->i4_pic_order_cnt_msb;
-            ps_prev_poc->i4_delta_pic_order_cnt_bottom =
-                            ps_cur_poc->i4_delta_pic_order_cnt_bottom;
-            ps_prev_poc->i4_delta_pic_order_cnt[0] =
-                            ps_cur_poc->i4_delta_pic_order_cnt[0];
-            ps_prev_poc->i4_delta_pic_order_cnt[1] =
-                            ps_cur_poc->i4_delta_pic_order_cnt[1];
-            ps_prev_poc->u1_bot_field = ps_cur_poc->u1_bot_field;
-        }
-
-        ps_dec->u2_total_mbs_coded = 0;
-    }
-
 
     /* Get the field related flags  */
     if(!ps_seq->u1_frame_mbs_only_flag)
@@ -1298,11 +1259,8 @@
     /*--------------------------------------------------------------------*/
     /* Check if the slice is part of new picture                          */
     /*--------------------------------------------------------------------*/
-    /* First slice of a picture is always considered as part of new picture */
-    i1_is_end_of_poc = 1;
-    ps_dec->ps_dec_err_status->u1_err_flag &= MASK_REJECT_CUR_PIC;
-
-    if(ps_dec->u4_first_slice_in_pic == 0)
+    i1_is_end_of_poc = 0;
+    if(!ps_dec->u1_first_slice_in_stream)
     {
         i1_is_end_of_poc = ih264d_is_end_of_pic(u2_frame_num, u1_nal_ref_idc,
                                             &s_tmp_poc, &ps_dec->s_cur_pic_poc,
@@ -1366,7 +1324,7 @@
 
             u1_is_idr_slice = ps_cur_slice->u1_nal_unit_type == IDR_SLICE_NAL;
         }
-        else if(ps_dec->u4_first_slice_in_pic)
+        else if(ps_dec->u4_first_slice_in_pic == 2)
         {
             if(u2_first_mb_in_slice > 0)
             {
@@ -1391,12 +1349,25 @@
         }
         else
         {
-            /* since i1_is_end_of_poc is set ,means new frame num is encountered. so conceal the current frame
-             * completely */
-            prev_slice_err = 2;
-            num_mb_skipped = (ps_dec->u2_frm_ht_in_mbs
-                            * ps_dec->u2_frm_wd_in_mbs)
-                            - ps_dec->u2_total_mbs_coded;
+
+            if(ps_dec->u4_first_slice_in_pic)
+            {
+                /* if valid slice header is not decoded do start of pic processing
+                 * since in the current process call, frame num is not updated in the slice structure yet
+                 * ih264d_is_end_of_pic is checked with valid frame num of previous process call,
+                 * although i1_is_end_of_poc is set there could be  more slices in the frame,
+                 * so conceal only till cur slice */
+                prev_slice_err = 1;
+                num_mb_skipped = u2_first_mb_in_slice << u1_mbaff;
+            }
+            else
+            {
+                /* since i1_is_end_of_poc is set ,means new frame num is encountered. so conceal the current frame
+                 * completely */
+                prev_slice_err = 2;
+                num_mb_skipped = (ps_dec->u2_frm_ht_in_mbs * ps_dec->u2_frm_wd_in_mbs)
+                        - ps_dec->u2_total_mbs_coded;
+            }
             ps_cur_poc = &s_tmp_poc;
         }
     }
@@ -1542,7 +1513,7 @@
         ps_dec->ps_cur_pic->i4_poc = i4_temp_poc;
         ps_dec->ps_cur_pic->i4_avg_poc = i4_temp_poc;
     }
-    if(ps_dec->u4_first_slice_in_pic)
+    if(ps_dec->u4_first_slice_in_pic == 2)
     {
         ret = ih264d_decode_pic_order_cnt(u1_is_idr_slice, u2_frame_num,
                                           &ps_dec->s_prev_pic_poc,
@@ -1610,7 +1581,7 @@
             ps_dec->pf_mvpred = ih264d_mvpred_nonmbaff;
     }
 
-    if(ps_dec->u4_first_slice_in_pic)
+    if(ps_dec->u4_first_slice_in_pic == 2)
     {
         if(u2_first_mb_in_slice == 0)
         {
@@ -1939,6 +1910,8 @@
     if(ps_dec->u1_slice_header_done)
     {
         /* set to zero to indicate a valid slice has been decoded */
+        /* first slice header successfully decoded */
+        ps_dec->u4_first_slice_in_pic = 0;
         ps_dec->u1_first_slice_in_stream = 0;
     }