3 files changed, 53 insertions, 1 deletions

diff --git a/vp9/common/vp9_alloccommon.c b/vp9/common/vp9_alloccommon.c
index 0d65651f0..d2981601b 100644
--- a/vp9/common/vp9_alloccommon.c
+++ b/vp9/common/vp9_alloccommon.c
@@ -79,6 +79,57 @@ static void setup_mi(VP9_COMMON *cm) {
   vp9_update_mode_info_border(cm, cm->prev_mip);
 }
 
+int vp9_resize_frame_buffers(VP9_COMMON *cm, int width, int height) {
+  const int aligned_width = ALIGN_POWER_OF_TWO(width, MI_SIZE_LOG2);
+  const int aligned_height = ALIGN_POWER_OF_TWO(height, MI_SIZE_LOG2);
+  const int ss_x = cm->subsampling_x;
+  const int ss_y = cm->subsampling_y;
+  int mi_size;
+
+  if (vp9_realloc_frame_buffer(&cm->post_proc_buffer, width, height, ss_x, ss_y,
+                             VP9BORDERINPIXELS) < 0)
+    goto fail;
+
+  set_mb_mi(cm, aligned_width, aligned_height);
+
+  // Allocation
+  mi_size = cm->mode_info_stride * (cm->mi_rows + MI_BLOCK_SIZE);
+
+  vpx_free(cm->mip);
+  cm->mip = vpx_calloc(mi_size, sizeof(MODE_INFO));
+  if (!cm->mip)
+    goto fail;
+
+  vpx_free(cm->prev_mip);
+  cm->prev_mip = vpx_calloc(mi_size, sizeof(MODE_INFO));
+  if (!cm->prev_mip)
+    goto fail;
+
+  vpx_free(cm->mi_grid_base);
+  cm->mi_grid_base = vpx_calloc(mi_size, sizeof(*cm->mi_grid_base));
+  if (!cm->mi_grid_base)
+    goto fail;
+
+  vpx_free(cm->prev_mi_grid_base);
+  cm->prev_mi_grid_base = vpx_calloc(mi_size, sizeof(*cm->prev_mi_grid_base));
+  if (!cm->prev_mi_grid_base)
+    goto fail;
+
+  setup_mi(cm);
+
+  // Create the segmentation map structure and set to 0.
+  vpx_free(cm->last_frame_seg_map);
+  cm->last_frame_seg_map = vpx_calloc(cm->mi_rows * cm->mi_cols, 1);
+  if (!cm->last_frame_seg_map)
+    goto fail;
+
+  return 0;
+
+ fail:
+  vp9_free_frame_buffers(cm);
+  return 1;
+}
+
 int vp9_alloc_frame_buffers(VP9_COMMON *cm, int width, int height) {
   int i;
 
diff --git a/vp9/common/vp9_alloccommon.h b/vp9/common/vp9_alloccommon.h
index 5d5fae993..cf8dca573 100644
--- a/vp9/common/vp9_alloccommon.h
+++ b/vp9/common/vp9_alloccommon.h
@@ -21,6 +21,7 @@ void vp9_update_mode_info_border(VP9_COMMON *cm, MODE_INFO *mi);
 void vp9_create_common(VP9_COMMON *cm);
 void vp9_remove_common(VP9_COMMON *cm);
 
+int vp9_resize_frame_buffers(VP9_COMMON *cm, int width, int height);
 int vp9_alloc_frame_buffers(VP9_COMMON *cm, int width, int height);
 void vp9_free_frame_buffers(VP9_COMMON *cm);
 
diff --git a/vp9/common/vp9_extend.c b/vp9/common/vp9_extend.c
index 07c68c84a..836bf0e79 100644
--- a/vp9/common/vp9_extend.c
+++ b/vp9/common/vp9_extend.c
@@ -62,7 +62,7 @@ void vp9_copy_and_extend_frame(const YV12_BUFFER_CONFIG *src,
   const int et_y = 16;
   const int el_y = 16;
   // Motion estimation may use src block variance with the block size up
-  // to 64x64, so the right and bottom need to be extended to 64 mulitple
+  // to 64x64, so the right and bottom need to be extended to 64 multiple
   // or up to 16, whichever is greater.
   const int eb_y = MAX(ALIGN_POWER_OF_TWO(src->y_width, 6) - src->y_width,
                        16);