/*
- * Ported to FFmpeg from MPlayer libmpcodecs/unsharp.c
- * Original copyright (C) 2002 Remi Guyomarch <rguyom@pobox.com>
- * Port copyright (C) 2010 Daniel G. Taylor <dan@programmer-art.org>
+ * Original copyright (c) 2002 Remi Guyomarch <rguyom@pobox.com>
+ * Port copyright (c) 2010 Daniel G. Taylor <dan@programmer-art.org>
* Relicensed to the LGPL with permission from Remi Guyomarch.
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
- * blur / sharpen filter
+ * blur / sharpen filter, ported to Libav from MPlayer
+ * libmpcodecs/unsharp.c.
*
* This code is based on:
*
*/
#include "avfilter.h"
+#include "formats.h"
+#include "internal.h"
+#include "video.h"
#include "libavutil/common.h"
#include "libavutil/mem.h"
#include "libavutil/pixdesc.h"
#define MIN_SIZE 3
#define MAX_SIZE 13
-#define CHROMA_WIDTH(link) -((-link->w) >> av_pix_fmt_descriptors[link->format].log2_chroma_w)
-#define CHROMA_HEIGHT(link) -((-link->h) >> av_pix_fmt_descriptors[link->format].log2_chroma_h)
+/* right-shift and round-up */
+#define SHIFTUP(x,shift) (-((-(x))>>(shift)))
typedef struct FilterParam {
int msize_x; ///< matrix width
typedef struct {
FilterParam luma; ///< luma parameters (width, height, amount)
FilterParam chroma; ///< chroma parameters (width, height, amount)
+ int hsub, vsub;
} UnsharpContext;
-static void unsharpen(uint8_t *dst, uint8_t *src, int dst_stride, int src_stride, int width, int height, FilterParam *fp)
+static void apply_unsharp( uint8_t *dst, int dst_stride,
+ const uint8_t *src, int src_stride,
+ int width, int height, FilterParam *fp)
{
uint32_t **sc = fp->sc;
uint32_t sr[(MAX_SIZE * MAX_SIZE) - 1], tmp1, tmp2;
int32_t res;
int x, y, z;
+ const uint8_t *src2;
if (!fp->amount) {
if (dst_stride == src_stride)
memset(sc[y], 0, sizeof(sc[y][0]) * (width + 2 * fp->steps_x));
for (y = -fp->steps_y; y < height + fp->steps_y; y++) {
+ if (y < height)
+ src2 = src;
+
memset(sr, 0, sizeof(sr[0]) * (2 * fp->steps_x - 1));
for (x = -fp->steps_x; x < width + fp->steps_x; x++) {
- tmp1 = x <= 0 ? src[0] : x >= width ? src[width-1] : src[x];
+ tmp1 = x <= 0 ? src2[0] : x >= width ? src2[width-1] : src2[x];
for (z = 0; z < fp->steps_x * 2; z += 2) {
tmp2 = sr[z + 0] + tmp1; sr[z + 0] = tmp1;
tmp1 = sr[z + 1] + tmp2; sr[z + 1] = tmp2;
tmp1 = sc[z + 1][x + fp->steps_x] + tmp2; sc[z + 1][x + fp->steps_x] = tmp2;
}
if (x >= fp->steps_x && y >= fp->steps_y) {
- uint8_t* srx = src - fp->steps_y * src_stride + x - fp->steps_x;
- uint8_t* dsx = dst - fp->steps_y * dst_stride + x - fp->steps_x;
+ const uint8_t *srx = src - fp->steps_y * src_stride + x - fp->steps_x;
+ uint8_t *dsx = dst - fp->steps_y * dst_stride + x - fp->steps_x;
res = (int32_t)*srx + ((((int32_t) * srx - (int32_t)((tmp1 + fp->halfscale) >> fp->scalebits)) * fp->amount) >> 16);
*dsx = av_clip_uint8(res);
fp->halfscale = 1 << (fp->scalebits - 1);
}
-static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
+static av_cold int init(AVFilterContext *ctx, const char *args)
{
UnsharpContext *unsharp = ctx->priv;
- int lmsize_x = 5, cmsize_x = 0;
- int lmsize_y = 5, cmsize_y = 0;
+ int lmsize_x = 5, cmsize_x = 5;
+ int lmsize_y = 5, cmsize_y = 5;
double lamount = 1.0f, camount = 0.0f;
if (args)
sscanf(args, "%d:%d:%lf:%d:%d:%lf", &lmsize_x, &lmsize_y, &lamount,
&cmsize_x, &cmsize_y, &camount);
+ if ((lamount && (lmsize_x < 2 || lmsize_y < 2)) ||
+ (camount && (cmsize_x < 2 || cmsize_y < 2))) {
+ av_log(ctx, AV_LOG_ERROR,
+ "Invalid value <2 for lmsize_x:%d or lmsize_y:%d or cmsize_x:%d or cmsize_y:%d\n",
+ lmsize_x, lmsize_y, cmsize_x, cmsize_y);
+ return AVERROR(EINVAL);
+ }
+
set_filter_param(&unsharp->luma, lmsize_x, lmsize_y, lamount);
set_filter_param(&unsharp->chroma, cmsize_x, cmsize_y, camount);
static int query_formats(AVFilterContext *ctx)
{
- enum PixelFormat pix_fmts[] = {
- PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_YUV410P,
- PIX_FMT_YUV411P, PIX_FMT_YUV440P, PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P,
- PIX_FMT_YUVJ444P, PIX_FMT_YUVJ440P, PIX_FMT_NONE
+ enum AVPixelFormat pix_fmts[] = {
+ AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV410P,
+ AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
+ AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_NONE
};
- avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
+ ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
return 0;
}
effect = fp->amount == 0 ? "none" : fp->amount < 0 ? "blur" : "sharpen";
- av_log(ctx, AV_LOG_INFO, "effect:%s type:%s msize_x:%d msize_y:%d amount:%0.2f\n",
+ av_log(ctx, AV_LOG_VERBOSE, "effect:%s type:%s msize_x:%d msize_y:%d amount:%0.2f\n",
effect, effect_type, fp->msize_x, fp->msize_y, fp->amount / 65535.0);
for (z = 0; z < 2 * fp->steps_y; z++)
static int config_props(AVFilterLink *link)
{
UnsharpContext *unsharp = link->dst->priv;
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(link->format);
+
+ unsharp->hsub = desc->log2_chroma_w;
+ unsharp->vsub = desc->log2_chroma_h;
init_filter_param(link->dst, &unsharp->luma, "luma", link->w);
- init_filter_param(link->dst, &unsharp->chroma, "chroma", CHROMA_WIDTH(link));
+ init_filter_param(link->dst, &unsharp->chroma, "chroma", SHIFTUP(link->w, unsharp->hsub));
return 0;
}
free_filter_param(&unsharp->chroma);
}
-static void end_frame(AVFilterLink *link)
+static int end_frame(AVFilterLink *link)
{
UnsharpContext *unsharp = link->dst->priv;
- AVFilterBufferRef *in = link->cur_pic;
- AVFilterBufferRef *out = link->dst->outputs[0]->outpic;
-
- unsharpen(out->data[0], in->data[0], out->linesize[0], in->linesize[0], link->w, link->h, &unsharp->luma);
- unsharpen(out->data[1], in->data[1], out->linesize[1], in->linesize[1], CHROMA_WIDTH(link), CHROMA_HEIGHT(link), &unsharp->chroma);
- unsharpen(out->data[2], in->data[2], out->linesize[2], in->linesize[2], CHROMA_WIDTH(link), CHROMA_HEIGHT(link), &unsharp->chroma);
-
- avfilter_unref_buffer(in);
- avfilter_draw_slice(link->dst->outputs[0], 0, link->h, 1);
- avfilter_end_frame(link->dst->outputs[0]);
- avfilter_unref_buffer(out);
+ AVFilterBufferRef *in = link->cur_buf;
+ AVFilterBufferRef *out = link->dst->outputs[0]->out_buf;
+ int cw = SHIFTUP(link->w, unsharp->hsub);
+ int ch = SHIFTUP(link->h, unsharp->vsub);
+ int ret;
+
+ apply_unsharp(out->data[0], out->linesize[0], in->data[0], in->linesize[0], link->w, link->h, &unsharp->luma);
+ apply_unsharp(out->data[1], out->linesize[1], in->data[1], in->linesize[1], cw, ch, &unsharp->chroma);
+ apply_unsharp(out->data[2], out->linesize[2], in->data[2], in->linesize[2], cw, ch, &unsharp->chroma);
+
+ if ((ret = ff_draw_slice(link->dst->outputs[0], 0, link->h, 1)) < 0 ||
+ (ret = ff_end_frame(link->dst->outputs[0])) < 0)
+ return ret;
+ return 0;
}
-static void draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
+static int draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
{
+ return 0;
}
+static const AVFilterPad avfilter_vf_unsharp_inputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .draw_slice = draw_slice,
+ .end_frame = end_frame,
+ .config_props = config_props,
+ .min_perms = AV_PERM_READ,
+ },
+ { NULL }
+};
+
+static const AVFilterPad avfilter_vf_unsharp_outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ },
+ { NULL }
+};
+
AVFilter avfilter_vf_unsharp = {
.name = "unsharp",
.description = NULL_IF_CONFIG_SMALL("Sharpen or blur the input video."),
.uninit = uninit,
.query_formats = query_formats,
- .inputs = (AVFilterPad[]) {{ .name = "default",
- .type = AVMEDIA_TYPE_VIDEO,
- .draw_slice = draw_slice,
- .end_frame = end_frame,
- .config_props = config_props,
- .min_perms = AV_PERM_READ, },
- { .name = NULL}},
-
- .outputs = (AVFilterPad[]) {{ .name = "default",
- .type = AVMEDIA_TYPE_VIDEO, },
- { .name = NULL}},
+ .inputs = avfilter_vf_unsharp_inputs,
+
+ .outputs = avfilter_vf_unsharp_outputs,
};
projects / ffmpeg / blobdiff