Removing LOOPFILTER_TYPE and corresponding bit in bitstream.

We don't have two loopfilter types anymore.

Change-Id: I53c0137361342c7d00887ad03be3490f0dfa3532

vp9/common/vp9_alloccommon.c

@@ -177,18 +177,15 @@ void vp9_setup_version(VP9_COMMON *cm) {
   switch (cm->version & 0x3) {
     case 0:
       cm->no_lpf = 0;
-      cm->filter_type = NORMAL_LOOPFILTER;
       cm->use_bilinear_mc_filter = 0;
       break;
     case 1:
       cm->no_lpf = 0;
-      cm->filter_type = SIMPLE_LOOPFILTER;
       cm->use_bilinear_mc_filter = 1;
       break;
     case 2:
     case 3:
       cm->no_lpf = 1;
-      cm->filter_type = NORMAL_LOOPFILTER;
       cm->use_bilinear_mc_filter = 1;
       break;
   }
@@ -203,7 +200,6 @@ void vp9_create_common(VP9_COMMON *oci) {
   oci->txfm_mode = ONLY_4X4;
   oci->comp_pred_mode = HYBRID_PREDICTION;
   oci->no_lpf = 0;
-  oci->filter_type = NORMAL_LOOPFILTER;
   oci->use_bilinear_mc_filter = 0;
   oci->clr_type = REG_YUV;
   oci->clamp_type = RECON_CLAMP_REQUIRED;

vp9/common/vp9_loopfilter.c

@@ -199,7 +199,6 @@ static void lpf_mb(VP9_COMMON *cm, const MODE_INFO *mi,
   if (filter_level) {
     const int skip_lf = mb_lf_skip(&mi->mbmi);
     const int tx_size = mi->mbmi.txfm_size;
-    if (cm->filter_type == NORMAL_LOOPFILTER) {
     const int hev_index = filter_level >> 4;
     lfi.mblim = lfi_n->mblim[filter_level];
     lfi.blim = lfi_n->blim[filter_level];
@@ -219,8 +218,7 @@ static void lpf_mb(VP9_COMMON *cm, const MODE_INFO *mi,
     if (!skip_lf) {
       if (tx_size >= TX_8X8) {
         if (tx_size == TX_8X8 &&
-              (mi->mbmi.sb_type < BLOCK_SIZE_MB16X16)
-              )
+            mi->mbmi.sb_type < BLOCK_SIZE_MB16X16)
           vp9_loop_filter_bh8x8(y_ptr, u_ptr, v_ptr,
                                 y_stride, uv_stride, &lfi);
         else
@@ -245,7 +243,7 @@ static void lpf_mb(VP9_COMMON *cm, const MODE_INFO *mi,
     if (!skip_lf) {
       if (tx_size >= TX_8X8) {
         if (tx_size == TX_8X8 &&
-              (mi->mbmi.sb_type < BLOCK_SIZE_MB16X16))
+            mi->mbmi.sb_type < BLOCK_SIZE_MB16X16)
           vp9_loop_filter_bv8x8(y_ptr, u_ptr, v_ptr,
                                 y_stride, uv_stride, &lfi);
         else
@@ -271,9 +269,6 @@ static void lpf_mb(VP9_COMMON *cm, const MODE_INFO *mi,
       }
 #endif
     }
-    } else {
-      // TODO(yaowu): simple loop filter
-    }
   }
 }
 

vp9/common/vp9_loopfilter.h

@@ -16,12 +16,6 @@
 #include "vp9/common/vp9_blockd.h"
 
 #define MAX_LOOP_FILTER 63
-
-typedef enum {
-  NORMAL_LOOPFILTER = 0,
-  SIMPLE_LOOPFILTER = 1
-} LOOPFILTER_TYPE;
-
 #define SIMD_WIDTH 16
 
 /* Need to align this structure so when it is declared and

vp9/common/vp9_onyxc_int.h

@@ -198,7 +198,6 @@ typedef struct VP9Common {
   unsigned char *last_frame_seg_map;
 
   INTERPOLATIONFILTERTYPE mcomp_filter_type;
-  LOOPFILTER_TYPE filter_type;
 
   loop_filter_info_n lf_info;
 

vp9/decoder/vp9_decodframe.c

@@ -656,7 +656,6 @@ static void setup_pred_probs(VP9_COMMON *pc, vp9_reader *r) {
 }
 
 static void setup_loopfilter(VP9_COMMON *pc, MACROBLOCKD *xd, vp9_reader *r) {
-  pc->filter_type = (LOOPFILTER_TYPE) vp9_read_bit(r);
   pc->filter_level = vp9_read_literal(r, 6);
   pc->sharpness_level = vp9_read_literal(r, 3);
 

vp9/encoder/vp9_bitstream.c

@@ -1496,7 +1496,6 @@ void vp9_pack_bitstream(VP9_COMP *cpi, uint8_t *dest, unsigned long *size) {
   vp9_write_bit(&header_bc, cpi->mb.e_mbd.lossless);
 
   // Encode the loop filter level and type
-  vp9_write_bit(&header_bc, pc->filter_type);
   vp9_write_literal(&header_bc, pc->filter_level, 6);
   vp9_write_literal(&header_bc, pc->sharpness_level, 3);
 #if CONFIG_LOOP_DERING