Remove unused buffer allocation functions

Removed unused buffer allocation functions.

Change-Id: I5aa265a7698a2d2df736ddb89c6d93a5ee34895b

vpx_scale/generic/yv12config.c

@@ -24,95 +24,6 @@
 #define yv12_align_addr(addr, align) \
   (void *)(((size_t)(addr) + ((align)-1)) & (size_t) - (align))
 
-int vpx_yv12_de_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf) {
-  if (ybf) {
-    // If libvpx is using frame buffer callbacks then buffer_alloc_sz must
-    // not be set.
-    if (ybf->buffer_alloc_sz > 0) {
-      vpx_free(ybf->buffer_alloc);
-    }
-
-    /* buffer_alloc isn't accessed by most functions.  Rather y_buffer,
-      u_buffer and v_buffer point to buffer_alloc and are used.  Clear out
-      all of this so that a freed pointer isn't inadvertently used */
-    memset(ybf, 0, sizeof(YV12_BUFFER_CONFIG));
-  } else {
-    return -1;
-  }
-
-  return 0;
-}
-
-int vpx_yv12_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf, int width,
-                                  int height, int border) {
-  if (ybf) {
-    int aligned_width = (width + 15) & ~15;
-    int aligned_height = (height + 15) & ~15;
-    int y_stride = ((aligned_width + 2 * border) + 31) & ~31;
-    int yplane_size = (aligned_height + 2 * border) * y_stride;
-    int uv_width = aligned_width >> 1;
-    int uv_height = aligned_height >> 1;
-    /** There is currently a bunch of code which assumes
-      *  uv_stride == y_stride/2, so enforce this here. */
-    int uv_stride = y_stride >> 1;
-    int uvplane_size = (uv_height + border) * uv_stride;
-    const int frame_size = yplane_size + 2 * uvplane_size;
-
-    if (!ybf->buffer_alloc) {
-      ybf->buffer_alloc = (uint8_t *)vpx_memalign(32, frame_size);
-      ybf->buffer_alloc_sz = frame_size;
-    }
-
-    if (!ybf->buffer_alloc || ybf->buffer_alloc_sz < frame_size) return -1;
-
-    /* Only support allocating buffers that have a border that's a multiple
-     * of 32. The border restriction is required to get 16-byte alignment of
-     * the start of the chroma rows without introducing an arbitrary gap
-     * between planes, which would break the semantics of things like
-     * vpx_img_set_rect(). */
-    if (border & 0x1f) return -3;
-
-    ybf->y_crop_width = width;
-    ybf->y_crop_height = height;
-    ybf->y_width = aligned_width;
-    ybf->y_height = aligned_height;
-    ybf->y_stride = y_stride;
-
-    ybf->uv_crop_width = (width + 1) / 2;
-    ybf->uv_crop_height = (height + 1) / 2;
-    ybf->uv_width = uv_width;
-    ybf->uv_height = uv_height;
-    ybf->uv_stride = uv_stride;
-
-    ybf->alpha_width = 0;
-    ybf->alpha_height = 0;
-    ybf->alpha_stride = 0;
-
-    ybf->border = border;
-    ybf->frame_size = frame_size;
-
-    ybf->y_buffer = ybf->buffer_alloc + (border * y_stride) + border;
-    ybf->u_buffer =
-        ybf->buffer_alloc + yplane_size + (border / 2 * uv_stride) + border / 2;
-    ybf->v_buffer = ybf->buffer_alloc + yplane_size + uvplane_size +
-                    (border / 2 * uv_stride) + border / 2;
-    ybf->alpha_buffer = NULL;
-
-    ybf->corrupted = 0; /* assume not currupted by errors */
-    return 0;
-  }
-  return -2;
-}
-
-int vpx_yv12_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf, int width, int height,
-                                int border) {
-  if (ybf) {
-    vpx_yv12_de_alloc_frame_buffer(ybf);
-    return vpx_yv12_realloc_frame_buffer(ybf, width, height, border);
-  }
-  return -2;
-}
-
 #if CONFIG_VP10
 // TODO(jkoleszar): Maybe replace this with struct vpx_image
 

vpx_scale/yv12config.h

@@ -70,12 +70,6 @@ typedef struct yv12_buffer_config {
 
 #define YV12_FLAG_HIGHBITDEPTH 8
 
-int vpx_yv12_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf, int width, int height,
-                                int border);
-int vpx_yv12_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf, int width,
-                                  int height, int border);
-int vpx_yv12_de_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf);
-
 int vpx_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf, int width, int height,
                            int ss_x, int ss_y,
 #if CONFIG_VP9_HIGHBITDEPTH