diff options
Diffstat (limited to 'third_party/aom/av1/common/scale.c')
| -rw-r--r-- | third_party/aom/av1/common/scale.c | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/third_party/aom/av1/common/scale.c b/third_party/aom/av1/common/scale.c deleted file mode 100644 index c525fe229..000000000 --- a/third_party/aom/av1/common/scale.c +++ /dev/null @@ -1,126 +0,0 @@ -/* - * 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. - */ - -#include "config/aom_dsp_rtcd.h" -#include "config/av1_rtcd.h" - -#include "av1/common/filter.h" -#include "av1/common/scale.h" -#include "aom_dsp/aom_filter.h" - -// Note: Expect val to be in q4 precision -static INLINE int scaled_x(int val, const struct scale_factors *sf) { - const int off = - (sf->x_scale_fp - (1 << REF_SCALE_SHIFT)) * (1 << (SUBPEL_BITS - 1)); - const int64_t tval = (int64_t)val * sf->x_scale_fp + off; - return (int)ROUND_POWER_OF_TWO_SIGNED_64(tval, - REF_SCALE_SHIFT - SCALE_EXTRA_BITS); -} - -// Note: Expect val to be in q4 precision -static INLINE int scaled_y(int val, const struct scale_factors *sf) { - const int off = - (sf->y_scale_fp - (1 << REF_SCALE_SHIFT)) * (1 << (SUBPEL_BITS - 1)); - const int64_t tval = (int64_t)val * sf->y_scale_fp + off; - return (int)ROUND_POWER_OF_TWO_SIGNED_64(tval, - REF_SCALE_SHIFT - SCALE_EXTRA_BITS); -} - -// Note: Expect val to be in q4 precision -static int unscaled_value(int val, const struct scale_factors *sf) { - (void)sf; - return val << SCALE_EXTRA_BITS; -} - -static int get_fixed_point_scale_factor(int other_size, int this_size) { - // Calculate scaling factor once for each reference frame - // and use fixed point scaling factors in decoding and encoding routines. - // Hardware implementations can calculate scale factor in device driver - // and use multiplication and shifting on hardware instead of division. - return ((other_size << REF_SCALE_SHIFT) + this_size / 2) / this_size; -} - -// Given the fixed point scale, calculate coarse point scale. -static int fixed_point_scale_to_coarse_point_scale(int scale_fp) { - return ROUND_POWER_OF_TWO(scale_fp, REF_SCALE_SHIFT - SCALE_SUBPEL_BITS); -} - -// Note: x and y are integer precision, mvq4 is q4 precision. -MV32 av1_scale_mv(const MV *mvq4, int x, int y, - const struct scale_factors *sf) { - const int x_off_q4 = scaled_x(x << SUBPEL_BITS, sf); - const int y_off_q4 = scaled_y(y << SUBPEL_BITS, sf); - const MV32 res = { scaled_y((y << SUBPEL_BITS) + mvq4->row, sf) - y_off_q4, - scaled_x((x << SUBPEL_BITS) + mvq4->col, sf) - x_off_q4 }; - return res; -} - -void av1_setup_scale_factors_for_frame(struct scale_factors *sf, int other_w, - int other_h, int this_w, int this_h) { - if (!valid_ref_frame_size(other_w, other_h, this_w, this_h)) { - sf->x_scale_fp = REF_INVALID_SCALE; - sf->y_scale_fp = REF_INVALID_SCALE; - return; - } - - sf->x_scale_fp = get_fixed_point_scale_factor(other_w, this_w); - sf->y_scale_fp = get_fixed_point_scale_factor(other_h, this_h); - - sf->x_step_q4 = fixed_point_scale_to_coarse_point_scale(sf->x_scale_fp); - sf->y_step_q4 = fixed_point_scale_to_coarse_point_scale(sf->y_scale_fp); - - if (av1_is_scaled(sf)) { - sf->scale_value_x = scaled_x; - sf->scale_value_y = scaled_y; - } else { - sf->scale_value_x = unscaled_value; - sf->scale_value_y = unscaled_value; - } - - // AV1 convolve functions - // Special case convolve functions should produce the same result as - // av1_convolve_2d. - // subpel_x_q4 == 0 && subpel_y_q4 == 0 - sf->convolve[0][0][0] = av1_convolve_2d_copy_sr; - // subpel_x_q4 == 0 - sf->convolve[0][1][0] = av1_convolve_y_sr; - // subpel_y_q4 == 0 - sf->convolve[1][0][0] = av1_convolve_x_sr; - // subpel_x_q4 != 0 && subpel_y_q4 != 0 - sf->convolve[1][1][0] = av1_convolve_2d_sr; - // subpel_x_q4 == 0 && subpel_y_q4 == 0 - sf->convolve[0][0][1] = av1_jnt_convolve_2d_copy; - // subpel_x_q4 == 0 - sf->convolve[0][1][1] = av1_jnt_convolve_y; - // subpel_y_q4 == 0 - sf->convolve[1][0][1] = av1_jnt_convolve_x; - // subpel_x_q4 != 0 && subpel_y_q4 != 0 - sf->convolve[1][1][1] = av1_jnt_convolve_2d; - // AV1 High BD convolve functions - // Special case convolve functions should produce the same result as - // av1_highbd_convolve_2d. - // subpel_x_q4 == 0 && subpel_y_q4 == 0 - sf->highbd_convolve[0][0][0] = av1_highbd_convolve_2d_copy_sr; - // subpel_x_q4 == 0 - sf->highbd_convolve[0][1][0] = av1_highbd_convolve_y_sr; - // subpel_y_q4 == 0 - sf->highbd_convolve[1][0][0] = av1_highbd_convolve_x_sr; - // subpel_x_q4 != 0 && subpel_y_q4 != 0 - sf->highbd_convolve[1][1][0] = av1_highbd_convolve_2d_sr; - // subpel_x_q4 == 0 && subpel_y_q4 == 0 - sf->highbd_convolve[0][0][1] = av1_highbd_jnt_convolve_2d_copy; - // subpel_x_q4 == 0 - sf->highbd_convolve[0][1][1] = av1_highbd_jnt_convolve_y; - // subpel_y_q4 == 0 - sf->highbd_convolve[1][0][1] = av1_highbd_jnt_convolve_x; - // subpel_x_q4 != 0 && subpel_y_q4 != 0 - sf->highbd_convolve[1][1][1] = av1_highbd_jnt_convolve_2d; -} |