####  Copyright (c) 2017 The WebM project authors. All Rights Reserved.####  Use of this source code is governed by a BSD-style license##  that can be found in the LICENSE file in the root of the source##  tree. An additional intellectual property rights grant can be found##  in the file PATENTS.  All contributing project authors may##  be found in the AUTHORS file in the root of the source tree.## sub vpx_scale_forward_decls() {print <<EOFstruct yv12_buffer_config;EOF}forward_decls qw/vpx_scale_forward_decls/; # Scaler functionsif (vpx_config("CONFIG_SPATIAL_RESAMPLING") eq "yes") {    add_proto qw/void vp8_horizontal_line_5_4_scale/, "const unsigned char *source, unsigned int source_width, unsigned char *dest, unsigned int dest_width";    add_proto qw/void vp8_vertical_band_5_4_scale/, "unsigned char *source, unsigned int src_pitch, unsigned char *dest, unsigned int dest_pitch, unsigned int dest_width";    add_proto qw/void vp8_horizontal_line_5_3_scale/, "const unsigned char *source, unsigned int source_width, unsigned char *dest, unsigned int dest_width";    add_proto qw/void vp8_vertical_band_5_3_scale/, "unsigned char *source, unsigned int src_pitch, unsigned char *dest, unsigned int dest_pitch, unsigned int dest_width";    add_proto qw/void vp8_horizontal_line_2_1_scale/, "const unsigned char *source, unsigned int source_width, unsigned char *dest, unsigned int dest_width";    add_proto qw/void vp8_vertical_band_2_1_scale/, "unsigned char *source, unsigned int src_pitch, unsigned char *dest, unsigned int dest_pitch, unsigned int dest_width";    add_proto qw/void vp8_vertical_band_2_1_scale_i/, "unsigned char *source, unsigned int src_pitch, unsigned char *dest, unsigned int dest_pitch, unsigned int dest_width";} add_proto qw/void vp8_yv12_extend_frame_borders/, "struct yv12_buffer_config *ybf"; add_proto qw/void vp8_yv12_copy_frame/, "const struct yv12_buffer_config *src_ybc, struct yv12_buffer_config *dst_ybc"; add_proto qw/void vpx_yv12_copy_y/, "const struct yv12_buffer_config *src_ybc, struct yv12_buffer_config *dst_ybc"; if (vpx_config("CONFIG_VP9") eq "yes") {    add_proto qw/void vpx_yv12_copy_frame/, "const struct yv12_buffer_config *src_ybc, struct yv12_buffer_config *dst_ybc";     add_proto qw/void vpx_extend_frame_borders/, "struct yv12_buffer_config *ybf";    specialize qw/vpx_extend_frame_borders dspr2/;     add_proto qw/void vpx_extend_frame_inner_borders/, "struct yv12_buffer_config *ybf";    specialize qw/vpx_extend_frame_inner_borders dspr2/;}1;