/* * Copyright (c) 2016, Alliance for Open Media. All rights reserved * * This source code is subject to the terms of the BSD 2 Clause License and * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License * was not distributed with this source code in the LICENSE file, you can * obtain it at www.aomedia.org/license/software. If the Alliance for Open * Media Patent License 1.0 was not distributed with this source code in the * PATENTS file, you can obtain it at www.aomedia.org/license/patent. */ #ifndef AOM_AV1_COMMON_RESIZE_H_ #define AOM_AV1_COMMON_RESIZE_H_ #include #include "aom/aom_integer.h" #include "av1/common/av1_common_int.h" #ifdef __cplusplus extern "C" { #endif bool av1_resize_plane(const uint8_t *const input, int height, int width, int in_stride, uint8_t *output, int height2, int width2, int out_stride); // TODO(aomedia:3228): In libaom 4.0.0, remove av1_resize_frame420 from // av1/exports_com and delete this function. void av1_resize_frame420(const uint8_t *const y, int y_stride, const uint8_t *const u, const uint8_t *const v, int uv_stride, int height, int width, uint8_t *oy, int oy_stride, uint8_t *ou, uint8_t *ov, int ouv_stride, int oheight, int owidth); bool av1_resize_frame422(const uint8_t *const y, int y_stride, const uint8_t *const u, const uint8_t *const v, int uv_stride, int height, int width, uint8_t *oy, int oy_stride, uint8_t *ou, uint8_t *ov, int ouv_stride, int oheight, int owidth); bool av1_resize_frame444(const uint8_t *const y, int y_stride, const uint8_t *const u, const uint8_t *const v, int uv_stride, int height, int width, uint8_t *oy, int oy_stride, uint8_t *ou, uint8_t *ov, int ouv_stride, int oheight, int owidth); void av1_highbd_resize_plane(const uint8_t *const input, int height, int width, int in_stride, uint8_t *output, int height2, int width2, int out_stride, int bd); void av1_highbd_resize_frame420(const uint8_t *const y, int y_stride, const uint8_t *const u, const uint8_t *const v, int uv_stride, int height, int width, uint8_t *oy, int oy_stride, uint8_t *ou, uint8_t *ov, int ouv_stride, int oheight, int owidth, int bd); void av1_highbd_resize_frame422(const uint8_t *const y, int y_stride, const uint8_t *const u, const uint8_t *const v, int uv_stride, int height, int width, uint8_t *oy, int oy_stride, uint8_t *ou, uint8_t *ov, int ouv_stride, int oheight, int owidth, int bd); void av1_highbd_resize_frame444(const uint8_t *const y, int y_stride, const uint8_t *const u, const uint8_t *const v, int uv_stride, int height, int width, uint8_t *oy, int oy_stride, uint8_t *ou, uint8_t *ov, int ouv_stride, int oheight, int owidth, int bd); void av1_upscale_normative_rows(const AV1_COMMON *cm, const uint8_t *src, int src_stride, uint8_t *dst, int dst_stride, int plane, int rows); void av1_upscale_normative_and_extend_frame(const AV1_COMMON *cm, const YV12_BUFFER_CONFIG *src, YV12_BUFFER_CONFIG *dst); YV12_BUFFER_CONFIG *av1_realloc_and_scale_if_required( AV1_COMMON *cm, YV12_BUFFER_CONFIG *unscaled, YV12_BUFFER_CONFIG *scaled, const InterpFilter filter, const int phase, const bool use_optimized_scaler, const bool for_psnr, const int border_in_pixels, const int num_pyramid_levels); bool av1_resize_and_extend_frame_nonnormative(const YV12_BUFFER_CONFIG *src, YV12_BUFFER_CONFIG *dst, int bd, const int num_planes); // Calculates the scaled dimensions from the given original dimensions and the // resize scale denominator. void av1_calculate_scaled_size(int *width, int *height, int resize_denom); // Similar to above, but calculates scaled dimensions after superres from the // given original dimensions and superres scale denominator. void av1_calculate_scaled_superres_size(int *width, int *height, int superres_denom); // Inverse of av1_calculate_scaled_superres_size() above: calculates the // original dimensions from the given scaled dimensions and the scale // denominator. void av1_calculate_unscaled_superres_size(int *width, int *height, int denom); void av1_superres_upscale(AV1_COMMON *cm, BufferPool *const pool, int num_pyramid_levels); // Returns 1 if a superres upscaled frame is scaled and 0 otherwise. static INLINE int av1_superres_scaled(const AV1_COMMON *cm) { // Note: for some corner cases (e.g. cm->width of 1), there may be no scaling // required even though cm->superres_scale_denominator != SCALE_NUMERATOR. // So, the following check is more accurate. return (cm->width != cm->superres_upscaled_width); } // The optimized scaler av1_resize_and_extend_frame() can only handle scaling // ratios >= 1/4 and <= 16. See comment in aom_convolve8_c() for detail. // Visual assessment shows that if the scaling ratio or its reciprocal is not a // multiple of 1/16, there are some artifacts in the output of the optimized // scaler, especially on lines, due to non-exact ratio representation. SSSE3 // and NEON have a specialized 3/4 version of av1_resize_and_extend_frame() // that does not have this issue. // // Use the non-normative scaler av1_resize_and_extend_frame_nonnormative() // for other scaling ratios. static INLINE bool av1_has_optimized_scaler(const int src_width, const int src_height, const int dst_width, const int dst_height) { bool has_optimized_scaler = (dst_width * 4 >= src_width && dst_height * 4 >= src_height) && (dst_width <= src_width * 16 && dst_height <= src_height * 16) && (16 * dst_width % src_width == 0) && (16 * src_width % dst_width == 0) && (16 * dst_height % src_height == 0) && (16 * src_height % dst_height == 0); #if HAVE_SSSE3 || HAVE_NEON has_optimized_scaler = has_optimized_scaler || (4 * dst_width == 3 * src_width && 4 * dst_height == 3 * src_height); #endif return has_optimized_scaler; } #define UPSCALE_NORMATIVE_TAPS 8 extern const int16_t av1_resize_filter_normative[1 << RS_SUBPEL_BITS] [UPSCALE_NORMATIVE_TAPS]; int32_t av1_get_upscale_convolve_step(int in_length, int out_length); #ifdef __cplusplus } // extern "C" #endif #endif // AOM_AV1_COMMON_RESIZE_H_