147 lines
7.3 KiB
C
147 lines
7.3 KiB
C
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/*
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* Copyright (c) 2016, Alliance for Open Media. All rights reserved
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*
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* This source code is subject to the terms of the BSD 2 Clause License and
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* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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* was not distributed with this source code in the LICENSE file, you can
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* obtain it at www.aomedia.org/license/software. If the Alliance for Open
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* Media Patent License 1.0 was not distributed with this source code in the
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* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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*/
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#ifndef AOM_AV1_COMMON_RESIZE_H_
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#define AOM_AV1_COMMON_RESIZE_H_
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#include <stdio.h>
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#include "aom/aom_integer.h"
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#include "av1/common/av1_common_int.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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void av1_resize_plane(const uint8_t *const input, int height, int width,
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int in_stride, uint8_t *output, int height2, int width2,
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int out_stride);
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void av1_upscale_plane_double_prec(const double *const input, int height,
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int width, int in_stride, double *output,
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int height2, int width2, int out_stride);
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void av1_resize_frame420(const uint8_t *const y, int y_stride,
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const uint8_t *const u, const uint8_t *const v,
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int uv_stride, int height, int width, uint8_t *oy,
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int oy_stride, uint8_t *ou, uint8_t *ov,
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int ouv_stride, int oheight, int owidth);
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void av1_resize_frame422(const uint8_t *const y, int y_stride,
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const uint8_t *const u, const uint8_t *const v,
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int uv_stride, int height, int width, uint8_t *oy,
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int oy_stride, uint8_t *ou, uint8_t *ov,
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int ouv_stride, int oheight, int owidth);
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void av1_resize_frame444(const uint8_t *const y, int y_stride,
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const uint8_t *const u, const uint8_t *const v,
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int uv_stride, int height, int width, uint8_t *oy,
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int oy_stride, uint8_t *ou, uint8_t *ov,
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int ouv_stride, int oheight, int owidth);
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void av1_highbd_resize_plane(const uint8_t *const input, int height, int width,
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int in_stride, uint8_t *output, int height2,
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int width2, int out_stride, int bd);
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void av1_highbd_resize_frame420(const uint8_t *const y, int y_stride,
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const uint8_t *const u, const uint8_t *const v,
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int uv_stride, int height, int width,
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uint8_t *oy, int oy_stride, uint8_t *ou,
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uint8_t *ov, int ouv_stride, int oheight,
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int owidth, int bd);
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void av1_highbd_resize_frame422(const uint8_t *const y, int y_stride,
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const uint8_t *const u, const uint8_t *const v,
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int uv_stride, int height, int width,
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uint8_t *oy, int oy_stride, uint8_t *ou,
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uint8_t *ov, int ouv_stride, int oheight,
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int owidth, int bd);
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void av1_highbd_resize_frame444(const uint8_t *const y, int y_stride,
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const uint8_t *const u, const uint8_t *const v,
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int uv_stride, int height, int width,
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uint8_t *oy, int oy_stride, uint8_t *ou,
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uint8_t *ov, int ouv_stride, int oheight,
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int owidth, int bd);
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void av1_upscale_normative_rows(const AV1_COMMON *cm, const uint8_t *src,
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int src_stride, uint8_t *dst, int dst_stride,
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int plane, int rows);
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void av1_upscale_normative_and_extend_frame(const AV1_COMMON *cm,
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const YV12_BUFFER_CONFIG *src,
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YV12_BUFFER_CONFIG *dst);
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YV12_BUFFER_CONFIG *av1_realloc_and_scale_if_required(
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AV1_COMMON *cm, YV12_BUFFER_CONFIG *unscaled, YV12_BUFFER_CONFIG *scaled,
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const InterpFilter filter, const int phase, const bool use_optimized_scaler,
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const bool for_psnr, const int border_in_pixels,
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const bool alloc_y_buffer_8bit);
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void av1_resize_and_extend_frame_nonnormative(const YV12_BUFFER_CONFIG *src,
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YV12_BUFFER_CONFIG *dst, int bd,
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const int num_planes);
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// Calculates the scaled dimensions from the given original dimensions and the
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// resize scale denominator.
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void av1_calculate_scaled_size(int *width, int *height, int resize_denom);
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// Similar to above, but calculates scaled dimensions after superres from the
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// given original dimensions and superres scale denominator.
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void av1_calculate_scaled_superres_size(int *width, int *height,
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int superres_denom);
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// Inverse of av1_calculate_scaled_superres_size() above: calculates the
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// original dimensions from the given scaled dimensions and the scale
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// denominator.
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void av1_calculate_unscaled_superres_size(int *width, int *height, int denom);
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void av1_superres_upscale(AV1_COMMON *cm, BufferPool *const pool);
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// Returns 1 if a superres upscaled frame is scaled and 0 otherwise.
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static INLINE int av1_superres_scaled(const AV1_COMMON *cm) {
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// Note: for some corner cases (e.g. cm->width of 1), there may be no scaling
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// required even though cm->superres_scale_denominator != SCALE_NUMERATOR.
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// So, the following check is more accurate.
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return (cm->width != cm->superres_upscaled_width);
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}
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// The optimized scaler av1_resize_and_extend_frame() can only handle scaling
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// ratios >= 1/4 and <= 16. See comment in aom_convolve8_c() for detail.
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// Visual assessment shows that if the scaling ratio or its reciprocal is not a
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// multiple of 1/16, there are some artifacts in the output of the optimized
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// scaler, especially on lines, due to non-exact ratio representation. SSSE3
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// and NEON have a specialized 3/4 version of av1_resize_and_extend_frame()
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// that does not have this issue.
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//
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// Use the non-normative scaler av1_resize_and_extend_frame_nonnormative()
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// for other scaling ratios.
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static INLINE bool av1_has_optimized_scaler(const int src_width,
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const int src_height,
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const int dst_width,
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const int dst_height) {
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bool has_optimized_scaler =
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(dst_width * 4 >= src_width && dst_height * 4 >= src_height) &&
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(dst_width <= src_width * 16 && dst_height <= src_height * 16) &&
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(16 * dst_width % src_width == 0) && (16 * src_width % dst_width == 0) &&
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(16 * dst_height % src_height == 0) &&
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(16 * src_height % dst_height == 0);
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#if HAVE_SSSE3 || HAVE_NEON
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has_optimized_scaler =
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has_optimized_scaler ||
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(4 * dst_width == 3 * src_width && 4 * dst_height == 3 * src_height);
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#endif
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return has_optimized_scaler;
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}
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#define UPSCALE_NORMATIVE_TAPS 8
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extern const int16_t av1_resize_filter_normative[1 << RS_SUBPEL_BITS]
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[UPSCALE_NORMATIVE_TAPS];
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int32_t av1_get_upscale_convolve_step(int in_length, int out_length);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // AOM_AV1_COMMON_RESIZE_H_
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