mirror of
https://github.com/CTCaer/RetroArch.git
synced 2025-01-10 13:02:27 +00:00
cb53d65fc3
fixes for filters. Note/FIXME: We need to get rid of the complex.h dependency in the equalizer plugin
252 lines
7.6 KiB
C
252 lines
7.6 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
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* Copyright (C) 2011-2014 - Daniel De Matteis
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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// Compile: gcc -o lq2x.so -shared lq2x.c -std=c99 -O3 -Wall -pedantic -fPIC
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#include "softfilter.h"
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#include "softfilter_prototypes.h"
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#include <stdlib.h>
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#ifdef RARCH_INTERNAL
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#define softfilter_get_implementation lq2x_get_implementation
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#endif
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#define LQ2X_SCALE 2
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static unsigned lq2x_generic_input_fmts(void)
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{
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return SOFTFILTER_FMT_RGB565 | SOFTFILTER_FMT_XRGB8888;
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}
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static unsigned lq2x_generic_output_fmts(unsigned input_fmts)
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{
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return input_fmts;
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}
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static unsigned lq2x_generic_threads(void *data)
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{
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struct filter_data *filt = (struct filter_data*)data;
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return filt->threads;
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}
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static void *lq2x_generic_create(unsigned in_fmt, unsigned out_fmt,
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unsigned max_width, unsigned max_height,
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unsigned threads, softfilter_simd_mask_t simd)
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{
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(void)simd;
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struct filter_data *filt = (struct filter_data*)calloc(1, sizeof(*filt));
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if (!filt)
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return NULL;
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filt->workers = (struct softfilter_thread_data*)calloc(threads, sizeof(struct softfilter_thread_data));
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filt->threads = threads;
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filt->in_fmt = in_fmt;
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if (!filt->workers)
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{
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free(filt);
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return NULL;
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}
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return filt;
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}
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static void lq2x_generic_output(void *data, unsigned *out_width, unsigned *out_height,
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unsigned width, unsigned height)
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{
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*out_width = width * LQ2X_SCALE;
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*out_height = height * LQ2X_SCALE;
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}
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static void lq2x_generic_destroy(void *data)
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{
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struct filter_data *filt = (struct filter_data*)data;
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free(filt->workers);
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free(filt);
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}
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static void lq2x_generic_rgb565(unsigned width, unsigned height,
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int first, int last, uint16_t *src,
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unsigned src_stride, uint16_t *dst, unsigned dst_stride)
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{
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unsigned x, y;
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uint16_t *out0, *out1;
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out0 = (uint16_t*)dst;
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out1 = (uint16_t*)(dst + dst_stride);
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for(y = 0; y < height; y++)
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{
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int prevline, nextline;
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prevline = (y == 0 ? 0 : src_stride);
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nextline = (y == height - 1 || last) ? 0 : src_stride;
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for(x = 0; x < width; x++)
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{
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uint16_t A, B, C, D, E, c;
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A = *(src - prevline);
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B = (x > 0) ? *(src - 1) : *src;
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C = *src;
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D = (x < width - 1) ? *(src + 1) : *src;
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E = *(src++ + nextline);
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c = C;
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if(A != E && B != D)
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{
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*out0++ = (A == B ? ((C + A - ((C ^ A) & 0x0821)) >> 1) : c);
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*out0++ = (A == D ? ((C + A - ((C ^ A) & 0x0821)) >> 1) : c);
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*out1++ = (E == B ? ((C + E - ((C ^ E) & 0x0821)) >> 1) : c);
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*out1++ = (E == D ? ((C + E - ((C ^ E) & 0x0821)) >> 1) : c);
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}
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else
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{
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*out0++ = c;
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*out0++ = c;
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*out1++ = c;
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*out1++ = c;
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}
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}
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src += src_stride - width;
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out0 += dst_stride + dst_stride - (width << 1);
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out1 += dst_stride + dst_stride - (width << 1);
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}
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}
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static void lq2x_generic_xrgb8888(unsigned width, unsigned height,
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int first, int last, uint32_t *src,
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unsigned src_stride, uint32_t *dst, unsigned dst_stride)
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{
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unsigned x, y;
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uint32_t *out0, *out1;
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out0 = (uint32_t*)dst;
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out1 = (uint32_t*)(dst + dst_stride);
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for(y = 0; y < height; y++)
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{
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int prevline = (y == 0 ? 0 : src_stride);
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int nextline = (y == height - 1 || last) ? 0 : src_stride;
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for(x = 0; x < width; x++)
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{
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uint32_t A = *(src - prevline);
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uint32_t B = (x > 0) ? *(src - 1) : *src;
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uint32_t C = *src;
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uint32_t D = (x < width - 1) ? *(src + 1) : *src;
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uint32_t E = *(src++ + nextline);
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uint32_t c = C;
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if(A != E && B != D)
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{
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*out0++ = (A == B ? (C + A - ((C ^ A) & 0x0421)) >> 1 : c);
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*out0++ = (A == D ? (C + A - ((C ^ A) & 0x0421)) >> 1 : c);
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*out1++ = (E == B ? (C + E - ((C ^ E) & 0x0421)) >> 1 : c);
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*out1++ = (E == D ? (C + E - ((C ^ E) & 0x0421)) >> 1 : c);
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}
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else
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{
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*out0++ = c;
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*out0++ = c;
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*out1++ = c;
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*out1++ = c;
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}
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}
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src += src_stride - width;
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out0 += dst_stride + dst_stride - (width << 1);
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out1 += dst_stride + dst_stride - (width << 1);
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}
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}
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static void lq2x_work_cb_rgb565(void *data, void *thread_data)
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{
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struct softfilter_thread_data *thr = (struct softfilter_thread_data*)thread_data;
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uint16_t *input = (uint16_t*)thr->in_data;
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uint16_t *output = (uint16_t*)thr->out_data;
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unsigned width = thr->width;
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unsigned height = thr->height;
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lq2x_generic_rgb565(width, height,
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thr->first, thr->last, input, thr->in_pitch / SOFTFILTER_BPP_RGB565, output, thr->out_pitch / SOFTFILTER_BPP_RGB565);
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}
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static void lq2x_work_cb_xrgb8888(void *data, void *thread_data)
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{
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struct softfilter_thread_data *thr = (struct softfilter_thread_data*)thread_data;
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uint32_t *input = (uint32_t*)thr->in_data;
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uint32_t *output = (uint32_t*)thr->out_data;
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unsigned width = thr->width;
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unsigned height = thr->height;
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lq2x_generic_xrgb8888(width, height,
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thr->first, thr->last, input, thr->in_pitch / SOFTFILTER_BPP_XRGB8888, output, thr->out_pitch / SOFTFILTER_BPP_XRGB8888);
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}
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static void lq2x_generic_packets(void *data,
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struct softfilter_work_packet *packets,
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void *output, size_t output_stride,
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const void *input, unsigned width, unsigned height, size_t input_stride)
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{
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struct filter_data *filt = (struct filter_data*)data;
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unsigned i;
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for (i = 0; i < filt->threads; i++)
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{
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struct softfilter_thread_data *thr = (struct softfilter_thread_data*)&filt->workers[i];
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unsigned y_start = (height * i) / filt->threads;
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unsigned y_end = (height * (i + 1)) / filt->threads;
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thr->out_data = (uint8_t*)output + y_start * LQ2X_SCALE * output_stride;
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thr->in_data = (const uint8_t*)input + y_start * input_stride;
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thr->out_pitch = output_stride;
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thr->in_pitch = input_stride;
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thr->width = width;
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thr->height = y_end - y_start;
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// Workers need to know if they can access pixels outside their given buffer.
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thr->first = y_start;
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thr->last = y_end == height;
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if (filt->in_fmt == SOFTFILTER_FMT_RGB565)
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packets[i].work = lq2x_work_cb_rgb565;
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//else if (filt->in_fmt == SOFTFILTER_FMT_RGB4444)
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//packets[i].work = lq2x_work_cb_rgb4444;
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else if (filt->in_fmt == SOFTFILTER_FMT_XRGB8888)
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packets[i].work = lq2x_work_cb_xrgb8888;
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packets[i].thread_data = thr;
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}
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}
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static const struct softfilter_implementation lq2x_generic = {
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lq2x_generic_input_fmts,
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lq2x_generic_output_fmts,
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lq2x_generic_create,
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lq2x_generic_destroy,
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lq2x_generic_threads,
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lq2x_generic_output,
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lq2x_generic_packets,
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"LQ2x",
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SOFTFILTER_API_VERSION,
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};
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const struct softfilter_implementation *softfilter_get_implementation(softfilter_simd_mask_t simd)
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{
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(void)simd;
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return &lq2x_generic;
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}
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#ifdef RARCH_INTERNAL
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#undef softfilter_get_implementation
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#endif
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