hevc_nal: add hevc_get_slice_type

modules/packetizer/hevc_nal.c

@@ -1141,3 +1141,13 @@ hevc_slice_segment_header_t * hevc_rbsp_decode_slice_header( const uint8_t *p_bu
     }
     return p_sh;
 }
+
+bool hevc_get_slice_type( const hevc_slice_segment_header_t *p_sli, enum hevc_slice_type_e *pi_type )
+{
+    if( !p_sli->dependent_slice_segment_flag )
+    {
+        *pi_type = p_sli->slice_type;
+        return true;
+    }
+    return false;
+}

modules/packetizer/hevc_nal.h

@@ -163,5 +163,6 @@ bool hevc_get_picture_size( const hevc_sequence_parameter_set_t *, unsigned *p_w
 bool hevc_get_frame_rate( const hevc_sequence_parameter_set_t *,
                           const hevc_video_parameter_set_t ** /* HEVC_MAX_VPS || NULL */,
                           unsigned *pi_num, unsigned *pi_den );
+bool hevc_get_slice_type( const hevc_slice_segment_header_t *, enum hevc_slice_type_e * );
 
 #endif /* HEVC_NAL_H */