Set mbmi_ext's tcoeff to size MAX_SB_SQUARE

This a simple implementation.
We will use a more precise buffer size for tcoeff once the
experiment functions correctly.

Change-Id: Ib561974f21ee1b8d72ce407882ea2be3cf0b069f

av1/encoder/block.h

@@ -68,7 +68,8 @@ typedef struct {
   int_mv ref_mvs[MODE_CTX_REF_FRAMES][MAX_MV_REF_CANDIDATES];
   int16_t mode_context[MODE_CTX_REF_FRAMES];
 #if CONFIG_LV_MAP
-  tran_low_t *tcoeff[MAX_MB_PLANE];
+  // TODO(angiebird): Reduce the buffer size according to sb_type
+  tran_low_t tcoeff[MAX_MB_PLANE][MAX_SB_SQUARE];
   uint16_t eobs[MAX_MB_PLANE][MAX_SB_SQUARE / (TX_SIZE_W_MIN * TX_SIZE_H_MIN)];
   uint8_t txb_skip_ctx[MAX_MB_PLANE]
                       [MAX_SB_SQUARE / (TX_SIZE_W_MIN * TX_SIZE_H_MIN)];

av1/encoder/encoder.c

@@ -931,9 +931,6 @@ static void update_frame_size(AV1_COMP *cpi) {
                        NULL);
   memset(cpi->mbmi_ext_base, 0,
          cm->mi_rows * cm->mi_cols * sizeof(*cpi->mbmi_ext_base));
-#if CONFIG_LV_MAP
-  av1_reset_txb_buf(cpi);
-#endif
 
   set_tile_info(cpi);
 }

av1/encoder/encodetxb.c

@@ -17,6 +17,7 @@
 #include "av1/encoder/tokenize.h"
 
 void av1_alloc_txb_buf(AV1_COMP *cpi) {
+#if 0
   AV1_COMMON *cm = &cpi->common;
   int mi_block_size = 1 << MI_SIZE_LOG2;
   // TODO(angiebird): Make sure cm->subsampling_x/y is set correctly, and then
@@ -29,42 +30,20 @@ void av1_alloc_txb_buf(AV1_COMP *cpi) {
         cm, cpi->tcoeff_buf[i],
         aom_malloc(sizeof(*cpi->tcoeff_buf[i]) * pixel_stride * pixel_height));
   }
-}
-
-void av1_reset_txb_buf(AV1_COMP *cpi) {
-  AV1_COMMON *cm = &cpi->common;
-  int mi_block_size = 1 << MI_SIZE_LOG2;
-  int plane;
-  for (plane = 0; plane < MAX_MB_PLANE; ++plane) {
-    // TODO(angiebird): Set the subsampling_x/y to cm->subsampling_x/y
-    int subsampling_x = 0;
-    int subsampling_y = 0;
-    int pixel_stride = (mi_block_size * cm->mi_cols) >> subsampling_x;
-    int pixel_height = (mi_block_size * cm->mi_rows) >> subsampling_y;
-
-    // TODO(angiebird): Check if we really need this initialization
-    memset(cpi->tcoeff_buf[plane], 0,
-           pixel_stride * pixel_height * sizeof(*cpi->tcoeff_buf[plane]));
-
-    int mi_row, mi_col;
-    for (mi_row = 0; mi_row < cm->mi_rows; ++mi_row) {
-      for (mi_col = 0; mi_col < cm->mi_cols; ++mi_col) {
-        MB_MODE_INFO_EXT *mbmi_ext =
-            cpi->mbmi_ext_base + mi_row * cm->mi_cols + mi_col;
-        int pixel_row = (mi_block_size * mi_row) >> subsampling_y;
-        int pixel_col = (mi_block_size * mi_col) >> subsampling_x;
-        mbmi_ext->tcoeff[plane] =
-            cpi->tcoeff_buf[plane] + pixel_row * pixel_stride + pixel_col;
-      }
-    }
-  }
+#else
+  (void)cpi;
+#endif
 }
 
 void av1_free_txb_buf(AV1_COMP *cpi) {
+#if 0
   int i;
   for (i = 0; i < MAX_MB_PLANE; ++i) {
     aom_free(cpi->tcoeff_buf[i]);
   }
+#else
+  (void)cpi;
+#endif
 }
 
 static void write_golomb(aom_writer *w, int level) {

av1/encoder/encodetxb.h

@@ -23,7 +23,6 @@
 extern "C" {
 #endif
 void av1_alloc_txb_buf(AV1_COMP *cpi);
-void av1_reset_txb_buf(AV1_COMP *cpi);
 void av1_free_txb_buf(AV1_COMP *cpi);
 void av1_write_coeffs_txb(const AV1_COMMON *const cm, MACROBLOCKD *xd,
                           aom_writer *w, int block, int plane,