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| -rw-r--r-- | third_party/aom/av1/common/resize.h | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/third_party/aom/av1/common/resize.h b/third_party/aom/av1/common/resize.h new file mode 100644 index 0000000000..0ba3108f72 --- /dev/null +++ b/third_party/aom/av1/common/resize.h @@ -0,0 +1,146 @@ +/* + * 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 <stdio.h> +#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_ |