*
* This file is part of FFmpeg.
*
- * FFmpeg is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
*
- * You should have received a copy of the GNU General Public License along
- * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
#include "libavutil/pixdesc.h"
#include "internal.h"
+#define NB_PLANES 4
+
enum InterpolationMethods {
INTERP_NEAREST,
INTERP_BILINEAR,
typedef struct GEQContext {
const AVClass *class;
- AVExpr *e[4]; ///< expressions for each plane
+ AVExpr *e[NB_PLANES]; ///< expressions for each plane
char *expr_str[4+3]; ///< expression strings for each plane
AVFrame *picref; ///< current input buffer
uint8_t *dst; ///< reference pointer to the 8bits output
int interpolation;
int is_rgb;
int bps;
+
+ double *pixel_sums[NB_PLANES];
+ int needs_sum[NB_PLANES];
} GEQContext;
enum { Y = 0, U, V, A, G, B, R };
}
}
+static int calculate_sums(GEQContext *geq, int plane, int w, int h)
+{
+ int xi, yi;
+ AVFrame *picref = geq->picref;
+ const uint8_t *src = picref->data[plane];
+ int linesize = picref->linesize[plane];
+
+ if (!geq->pixel_sums[plane])
+ geq->pixel_sums[plane] = av_malloc_array(w, h * sizeof (*geq->pixel_sums[plane]));
+ if (!geq->pixel_sums[plane])
+ return AVERROR(ENOMEM);
+ if (geq->bps > 8)
+ linesize /= 2;
+ for (yi = 0; yi < h; yi ++) {
+ if (geq->bps > 8) {
+ const uint16_t *src16 = (const uint16_t*)src;
+ double linesum = 0;
+
+ for (xi = 0; xi < w; xi ++) {
+ linesum += src16[xi + yi * linesize];
+ geq->pixel_sums[plane][xi + yi * w] = linesum;
+ }
+ } else {
+ double linesum = 0;
+
+ for (xi = 0; xi < w; xi ++) {
+ linesum += src[xi + yi * linesize];
+ geq->pixel_sums[plane][xi + yi * w] = linesum;
+ }
+ }
+ if (yi)
+ for (xi = 0; xi < w; xi ++) {
+ geq->pixel_sums[plane][xi + yi * w] += geq->pixel_sums[plane][xi + yi * w - w];
+ }
+ }
+ return 0;
+}
+
+static inline double getpix_integrate_internal(GEQContext *geq, int x, int y, int plane, int w, int h)
+{
+ if (x > w - 1) {
+ double boundary = getpix_integrate_internal(geq, w - 1, y, plane, w, h);
+ return 2*boundary - getpix_integrate_internal(geq, 2*(w - 1) - x, y, plane, w, h);
+ } else if (y > h - 1) {
+ double boundary = getpix_integrate_internal(geq, x, h - 1, plane, w, h);
+ return 2*boundary - getpix_integrate_internal(geq, x, 2*(h - 1) - y, plane, w, h);
+ } else if (x < 0) {
+ if (x == -1) return 0;
+ return - getpix_integrate_internal(geq, -x-2, y, plane, w, h);
+ } else if (y < 0) {
+ if (y == -1) return 0;
+ return - getpix_integrate_internal(geq, x, -y-2, plane, w, h);
+ }
+
+ return geq->pixel_sums[plane][x + y * w];
+}
+
+static inline double getpix_integrate(void *priv, double x, double y, int plane) {
+ GEQContext *geq = priv;
+ AVFrame *picref = geq->picref;
+ const uint8_t *src = picref->data[plane];
+ const int w = (plane == 1 || plane == 2) ? AV_CEIL_RSHIFT(picref->width, geq->hsub) : picref->width;
+ const int h = (plane == 1 || plane == 2) ? AV_CEIL_RSHIFT(picref->height, geq->vsub) : picref->height;
+
+ if (!src)
+ return 0;
+
+ return getpix_integrate_internal(geq, lrint(av_clipd(x, -w, 2*w)), lrint(av_clipd(y, -h, 2*h)), plane, w, h);
+}
+
//TODO: cubic interpolate
//TODO: keep the last few frames
static double lum(void *priv, double x, double y) { return getpix(priv, x, y, 0); }
static double cr(void *priv, double x, double y) { return getpix(priv, x, y, 2); }
static double alpha(void *priv, double x, double y) { return getpix(priv, x, y, 3); }
+static double lumsum(void *priv, double x, double y) { return getpix_integrate(priv, x, y, 0); }
+static double cbsum(void *priv, double x, double y) { return getpix_integrate(priv, x, y, 1); }
+static double crsub(void *priv, double x, double y) { return getpix_integrate(priv, x, y, 2); }
+static double alphasum(void *priv, double x, double y) { return getpix_integrate(priv, x, y, 3); }
+
static av_cold int geq_init(AVFilterContext *ctx)
{
GEQContext *geq = ctx->priv;
goto end;
}
- for (plane = 0; plane < 4; plane++) {
- static double (*p[])(void *, double, double) = { lum, cb, cr, alpha };
- static const char *const func2_yuv_names[] = { "lum", "cb", "cr", "alpha", "p", NULL };
- static const char *const func2_rgb_names[] = { "g", "b", "r", "alpha", "p", NULL };
+ for (plane = 0; plane < NB_PLANES; plane++) {
+ static double (*p[])(void *, double, double) = {
+ lum , cb , cr , alpha ,
+ lumsum, cbsum, crsub, alphasum,
+ };
+ static const char *const func2_yuv_names[] = {
+ "lum" , "cb" , "cr" , "alpha" , "p",
+ "lumsum", "cbsum", "crsum", "alphasum", "psum",
+ NULL };
+ static const char *const func2_rgb_names[] = {
+ "g" , "b" , "r" , "alpha" , "p",
+ "gsum", "bsum", "rsum", "alphasum", "psum",
+ NULL };
const char *const *func2_names = geq->is_rgb ? func2_rgb_names : func2_yuv_names;
- double (*func2[])(void *, double, double) = { lum, cb, cr, alpha, p[plane], NULL };
+ double (*func2[])(void *, double, double) = {
+ lum , cb , cr , alpha , p[plane],
+ lumsum, cbsum, crsub, alphasum, p[plane + 4],
+ NULL };
+ int counter[10] = {0};
ret = av_expr_parse(&geq->e[plane], geq->expr_str[plane < 3 && geq->is_rgb ? plane+4 : plane], var_names,
NULL, NULL, func2_names, func2, 0, ctx);
if (ret < 0)
break;
+
+ av_expr_count_func(geq->e[plane], counter, FF_ARRAY_ELEMS(counter), 2);
+ geq->needs_sum[plane] = counter[5] + counter[6] + counter[7] + counter[8] + counter[9];
}
end:
td.plane = plane;
td.linesize = linesize;
+ if (geq->needs_sum[plane])
+ calculate_sums(geq, plane, width, height);
+
ctx->internal->execute(ctx, slice_geq_filter, &td, NULL, FFMIN(height, nb_threads));
}
for (i = 0; i < FF_ARRAY_ELEMS(geq->e); i++)
av_expr_free(geq->e[i]);
+ for (i = 0; i < NB_PLANES; i++)
+ av_freep(&geq->pixel_sums);
}
static const AVFilterPad geq_inputs[] = {
projects / ffmpeg / blobdiff