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Diffstat (limited to 'thirdparty/basis_universal/basisu_resampler.h')
| -rw-r--r-- | thirdparty/basis_universal/basisu_resampler.h | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/thirdparty/basis_universal/basisu_resampler.h b/thirdparty/basis_universal/basisu_resampler.h deleted file mode 100644 index c3f2e05c25..0000000000 --- a/thirdparty/basis_universal/basisu_resampler.h +++ /dev/null @@ -1,196 +0,0 @@ -// basisu_resampler.h -// Copyright (C) 2019 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#pragma once -#include "transcoder/basisu.h" - -#define BASISU_RESAMPLER_DEBUG_OPS (0) -#define BASISU_RESAMPLER_DEFAULT_FILTER "lanczos4" -#define BASISU_RESAMPLER_MAX_DIMENSION (16384) - -namespace basisu -{ - // float or double - typedef float Resample_Real; - - class Resampler - { - public: - typedef Resample_Real Sample; - - struct Contrib - { - Resample_Real weight; - uint16_t pixel; - }; - - struct Contrib_List - { - uint16_t n; - Contrib *p; - }; - - enum Boundary_Op - { - BOUNDARY_WRAP = 0, - BOUNDARY_REFLECT = 1, - BOUNDARY_CLAMP = 2 - }; - - enum Status - { - STATUS_OKAY = 0, - STATUS_OUT_OF_MEMORY = 1, - STATUS_BAD_FILTER_NAME = 2, - STATUS_SCAN_BUFFER_FULL = 3 - }; - - // src_x/src_y - Input dimensions - // dst_x/dst_y - Output dimensions - // boundary_op - How to sample pixels near the image boundaries - // sample_low/sample_high - Clamp output samples to specified range, or disable clamping if sample_low >= sample_high - // Pclist_x/Pclist_y - Optional pointers to contributor lists from another instance of a Resampler - // src_x_ofs/src_y_ofs - Offset input image by specified amount (fractional values okay) - Resampler( - int src_x, int src_y, - int dst_x, int dst_y, - Boundary_Op boundary_op = BOUNDARY_CLAMP, - Resample_Real sample_low = 0.0f, Resample_Real sample_high = 0.0f, - const char *Pfilter_name = BASISU_RESAMPLER_DEFAULT_FILTER, - Contrib_List *Pclist_x = NULL, - Contrib_List *Pclist_y = NULL, - Resample_Real filter_x_scale = 1.0f, - Resample_Real filter_y_scale = 1.0f, - Resample_Real src_x_ofs = 0.0f, - Resample_Real src_y_ofs = 0.0f); - - ~Resampler(); - - // Reinits resampler so it can handle another frame. - void restart(); - - // false on out of memory. - bool put_line(const Sample *Psrc); - - // NULL if no scanlines are currently available (give the resampler more scanlines!) - const Sample *get_line(); - - Status status() const - { - return m_status; - } - - // Returned contributor lists can be shared with another Resampler. - void get_clists(Contrib_List **ptr_clist_x, Contrib_List **ptr_clist_y); - Contrib_List *get_clist_x() const - { - return m_Pclist_x; - } - Contrib_List *get_clist_y() const - { - return m_Pclist_y; - } - - // Filter accessors. - static int get_filter_num(); - static const char *get_filter_name(int filter_num); - - static Contrib_List *make_clist( - int src_x, int dst_x, Boundary_Op boundary_op, - Resample_Real(*Pfilter)(Resample_Real), - Resample_Real filter_support, - Resample_Real filter_scale, - Resample_Real src_ofs); - - private: - Resampler(); - Resampler(const Resampler &o); - Resampler &operator=(const Resampler &o); - -#ifdef BASISU_RESAMPLER_DEBUG_OPS - int total_ops; -#endif - - int m_intermediate_x; - - int m_resample_src_x; - int m_resample_src_y; - int m_resample_dst_x; - int m_resample_dst_y; - - Boundary_Op m_boundary_op; - - Sample *m_Pdst_buf; - Sample *m_Ptmp_buf; - - Contrib_List *m_Pclist_x; - Contrib_List *m_Pclist_y; - - bool m_clist_x_forced; - bool m_clist_y_forced; - - bool m_delay_x_resample; - - int *m_Psrc_y_count; - uint8_t *m_Psrc_y_flag; - - // The maximum number of scanlines that can be buffered at one time. - enum - { - MAX_SCAN_BUF_SIZE = BASISU_RESAMPLER_MAX_DIMENSION - }; - - struct Scan_Buf - { - int scan_buf_y[MAX_SCAN_BUF_SIZE]; - Sample *scan_buf_l[MAX_SCAN_BUF_SIZE]; - }; - - Scan_Buf *m_Pscan_buf; - - int m_cur_src_y; - int m_cur_dst_y; - - Status m_status; - - void resample_x(Sample *Pdst, const Sample *Psrc); - void scale_y_mov(Sample *Ptmp, const Sample *Psrc, Resample_Real weight, int dst_x); - void scale_y_add(Sample *Ptmp, const Sample *Psrc, Resample_Real weight, int dst_x); - void clamp(Sample *Pdst, int n); - void resample_y(Sample *Pdst); - - static int reflect(const int j, const int src_x, const Boundary_Op boundary_op); - - inline int count_ops(Contrib_List *Pclist, int k) - { - int i, t = 0; - for (i = 0; i < k; i++) - t += Pclist[i].n; - return (t); - } - - Resample_Real m_lo; - Resample_Real m_hi; - - inline Resample_Real clamp_sample(Resample_Real f) const - { - if (f < m_lo) - f = m_lo; - else if (f > m_hi) - f = m_hi; - return f; - } - }; - -} // namespace basisu |