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gfx/video_filters/crop_borders.c

@@ -0,0 +1,193 @@
+#include "softfilter.h"
+#include <stdlib.h>
+#include <string.h>
+
+#ifdef RARCH_INTERNAL
+#define softfilter_get_implementation crop_borders_get_implementation
+#define softfilter_thread_data crop_borders_softfilter_thread_data
+#define filter_data crop_borders_filter_data
+#endif
+
+struct softfilter_thread_data
+{
+   void *out_data;
+   const void *in_data;
+   size_t out_pitch;
+   size_t in_pitch;
+   unsigned width;
+   unsigned height;
+};
+
+struct filter_data
+{
+   struct softfilter_thread_data *workers;
+   unsigned in_fmt;
+   float crop_x;
+   float crop_y;
+};
+
+static unsigned crop_borders_generic_input_fmts(void)
+{
+   return SOFTFILTER_FMT_RGB565 | SOFTFILTER_FMT_XRGB8888;
+}
+
+static unsigned crop_borders_generic_output_fmts(unsigned input_fmts)
+{
+   return input_fmts;
+}
+
+static unsigned crop_borders_generic_threads(void *data)
+{
+   return 1;
+}
+
+static void crop_borders_initialize(struct filter_data *filt,
+      const struct softfilter_config *config,
+      void *userdata)
+{
+   /* RetroArch wull look at .filt for: crop_borders_crop_x */
+   config->get_float(userdata, "crop_x", &filt->crop_x, 0.0f);
+   config->get_float(userdata, "crop_y", &filt->crop_y, 0.0f);
+}
+
+static void *crop_borders_generic_create(const struct softfilter_config *config,
+      unsigned in_fmt, unsigned out_fmt,
+      unsigned max_width, unsigned max_height,
+      unsigned threads, softfilter_simd_mask_t simd, void *userdata)
+{
+   struct filter_data *filt = (struct filter_data*)calloc(1, sizeof(*filt));
+   if (!filt) return NULL;
+
+   if (!(filt->workers = (struct softfilter_thread_data*)calloc(1, sizeof(struct softfilter_thread_data))))
+   {
+      free(filt);
+      return NULL;
+   }
+
+   filt->in_fmt = in_fmt;
+
+   crop_borders_initialize(filt, config, userdata);
+
+   return filt;
+}
+
+static void crop_borders_generic_output(void *data,
+      unsigned *out_width, unsigned *out_height,
+      unsigned width, unsigned height)
+{
+   *out_width  = width;
+   *out_height = height;
+}
+
+static void crop_borders_generic_destroy(void *data)
+{
+   struct filter_data *filt = (struct filter_data*)data;
+   if (!filt) return;
+   free(filt->workers);
+   free(filt);
+}
+
+/* Rendering Logic with Float Coordinates */
+static void crop_borders_work_cb_xrgb8888(void *data, void *thread_data)
+{
+   struct filter_data *filt = (struct filter_data*)data;
+   struct softfilter_thread_data *thr = (struct softfilter_thread_data*)thread_data;
+   const uint32_t *input = (const uint32_t*)thr->in_data;
+   uint32_t *output = (uint32_t*)thr->out_data;
+   unsigned in_stride = (unsigned)(thr->in_pitch >> 2);
+   unsigned out_stride = (unsigned)(thr->out_pitch >> 2);
+
+   float visible_w = (float)thr->width - (filt->crop_x * 2.0f);
+   float visible_h = (float)thr->height - (filt->crop_y * 2.0f);
+
+   if (visible_w <= 0.0f || visible_h <= 0.0f) return;
+
+   float step_x = visible_w / (float)thr->width;
+   float step_y = visible_h / (float)thr->height;
+
+   for (unsigned y = 0; y < thr->height; y++)
+   {
+      unsigned i_y = (unsigned)(filt->crop_y + (y * step_y));
+      for (unsigned x = 0; x < thr->width; x++)
+      {
+         unsigned i_x = (unsigned)(filt->crop_x + (x * step_x));
+         output[y * out_stride + x] = input[i_y * in_stride + i_x];
+      }
+   }
+}
+
+static void crop_borders_work_cb_rgb565(void *data, void *thread_data)
+{
+   struct filter_data *filt = (struct filter_data*)data;
+   struct softfilter_thread_data *thr = (struct softfilter_thread_data*)thread_data;
+   const uint16_t *input = (const uint16_t*)thr->in_data;
+   uint16_t *output = (uint16_t*)thr->out_data;
+   unsigned in_stride = (unsigned)(thr->in_pitch >> 1);
+   unsigned out_stride = (unsigned)(thr->out_pitch >> 1);
+
+   float visible_w = (float)thr->width - (filt->crop_x * 2.0f);
+   float visible_h = (float)thr->height - (filt->crop_y * 2.0f);
+
+   if (visible_w <= 0.0f || visible_h <= 0.0f) return;
+
+   float step_x = visible_w / (float)thr->width;
+   float step_y = visible_h / (float)thr->height;
+
+   for (unsigned y = 0; y < thr->height; y++)
+   {
+      unsigned i_y = (unsigned)(filt->crop_y + (y * step_y));
+      for (unsigned x = 0; x < thr->width; x++)
+      {
+         unsigned i_x = (unsigned)(filt->crop_x + (x * step_x));
+         output[y * out_stride + x] = input[i_y * in_stride + i_x];
+      }
+   }
+}
+
+static void crop_borders_generic_packets(void *data,
+      struct softfilter_work_packet *packets,
+      void *output, size_t output_stride,
+      const void *input, unsigned width, unsigned height, size_t input_stride)
+{
+   struct filter_data *filt = (struct filter_data*)data;
+   struct softfilter_thread_data *thr = &filt->workers[0];
+
+   thr->out_data = output;
+   thr->in_data  = input;
+   thr->out_pitch = output_stride;
+   thr->in_pitch  = input_stride;
+   thr->width = width;
+   thr->height = height;
+
+   if (filt->in_fmt == SOFTFILTER_FMT_RGB565)
+      packets[0].work = crop_borders_work_cb_rgb565;
+   else
+      packets[0].work = crop_borders_work_cb_xrgb8888;
+
+   packets[0].thread_data = thr;
+}
+
+static const struct softfilter_implementation crop_borders_generic = {
+   crop_borders_generic_input_fmts,
+   crop_borders_generic_output_fmts,
+   crop_borders_generic_create,
+   crop_borders_generic_destroy,
+   crop_borders_generic_threads,
+   crop_borders_generic_output,
+   crop_borders_generic_packets,
+   SOFTFILTER_API_VERSION,
+   "Crop Borders",
+   "crop_borders",
+};
+
+const struct softfilter_implementation *softfilter_get_implementation(softfilter_simd_mask_t simd)
+{
+   (void)simd;
+   return &crop_borders_generic;
+}
+
+#ifdef RARCH_INTERNAL
+#undef softfilter_get_implementation
+#undef softfilter_thread_data
+#undef filter_data
+#endif

gfx/video_filters/crop_borders.filt

@@ -0,0 +1,4 @@
+filter = crop_borders
+
+crop_borders_crop_x = 8.0
+crop_borders_crop_y = 8.0