/*
* Copyright (c) 2010 Nolan Lum <nol888@gmail.com>
- * Copyright (c) 2009 Loren Merritt <lorenm@u.washignton.edu>
+ * Copyright (c) 2009 Loren Merritt <lorenm@u.washington.edu>
*
- * 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
*/
* libmpcodecs/vf_gradfun.c
*
* Apply a boxblur debanding algorithm (based on the gradfun2db
- * Avisynth filter by prunedtree).
+ * AviSynth filter by prunedtree).
* Foreach pixel, if it's within threshold of the blurred value, make it closer.
* So now we have a smoothed and higher bitdepth version of all the shallow
* gradients, while leaving detailed areas untouched.
* Dither it back to 8bit.
*/
-#include "libavcore/imgutils.h"
+#include "libavutil/imgutils.h"
+#include "libavutil/common.h"
#include "libavutil/cpu.h"
+#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
+#include "formats.h"
#include "gradfun.h"
+#include "internal.h"
+#include "video.h"
DECLARE_ALIGNED(16, static const uint16_t, dither)[8][8] = {
{0x00,0x60,0x18,0x78,0x06,0x66,0x1E,0x7E},
void ff_gradfun_filter_line_c(uint8_t *dst, uint8_t *src, uint16_t *dc, int width, int thresh, const uint16_t *dithers)
{
int x;
- for (x = 0; x < width; x++, dc += x & 1) {
+ for (x = 0; x < width; dc += x & 1, x++) {
int pix = src[x] << 7;
int delta = dc[0] - pix;
int m = abs(delta) * thresh >> 16;
ctx->filter_line(dst + y * dst_linesize, src + y * src_linesize, dc - r / 2, width, thresh, dither[y & 7]);
if (++y >= height) break;
}
+ emms_c();
}
-static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
+static av_cold int init(AVFilterContext *ctx)
{
- GradFunContext *gf = ctx->priv;
- float thresh = 1.2;
- int radius = 16;
- av_unused int cpu_flags = av_get_cpu_flags();
+ GradFunContext *s = ctx->priv;
- if (args)
- sscanf(args, "%f:%d", &thresh, &radius);
+ s->thresh = (1 << 15) / s->strength;
+ s->radius &= ~1;
- thresh = av_clipf(thresh, 0.51, 255);
- gf->thresh = (1 << 15) / thresh;
- gf->radius = av_clip((radius + 1) & ~1, 4, 32);
+ s->blur_line = ff_gradfun_blur_line_c;
+ s->filter_line = ff_gradfun_filter_line_c;
- gf->blur_line = ff_gradfun_blur_line_c;
- gf->filter_line = ff_gradfun_filter_line_c;
+ if (ARCH_X86)
+ ff_gradfun_init_x86(s);
- if (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX2)
- gf->filter_line = ff_gradfun_filter_line_mmx2;
- if (HAVE_SSSE3 && cpu_flags & AV_CPU_FLAG_SSSE3)
- gf->filter_line = ff_gradfun_filter_line_ssse3;
- if (HAVE_SSE && cpu_flags & AV_CPU_FLAG_SSE2)
- gf->blur_line = ff_gradfun_blur_line_sse2;
-
- av_log(ctx, AV_LOG_INFO, "threshold:%.2f radius:%d\n", thresh, gf->radius);
+ av_log(ctx, AV_LOG_VERBOSE, "threshold:%.2f radius:%d\n", s->strength, s->radius);
return 0;
}
static av_cold void uninit(AVFilterContext *ctx)
{
- GradFunContext *gf = ctx->priv;
- av_freep(&gf->buf);
+ GradFunContext *s = ctx->priv;
+ av_freep(&s->buf);
}
static int query_formats(AVFilterContext *ctx)
{
- static const enum PixelFormat pix_fmts[] = {
- PIX_FMT_YUV410P, PIX_FMT_YUV420P,
- PIX_FMT_GRAY8, PIX_FMT_NV12,
- PIX_FMT_NV21, PIX_FMT_YUV444P,
- PIX_FMT_YUV422P, PIX_FMT_YUV411P,
- PIX_FMT_NONE
+ static const enum AVPixelFormat pix_fmts[] = {
+ AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV420P,
+ AV_PIX_FMT_GRAY8, AV_PIX_FMT_NV12,
+ AV_PIX_FMT_NV21, AV_PIX_FMT_YUV444P,
+ AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV411P,
+ 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;
}
static int config_input(AVFilterLink *inlink)
{
- GradFunContext *gf = inlink->dst->priv;
- int hsub = av_pix_fmt_descriptors[inlink->format].log2_chroma_w;
- int vsub = av_pix_fmt_descriptors[inlink->format].log2_chroma_h;
-
- gf->buf = av_mallocz((FFALIGN(inlink->w, 16) * (gf->radius + 1) / 2 + 32) * sizeof(uint16_t));
- if (!gf->buf)
+ GradFunContext *s = inlink->dst->priv;
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
+ int hsub = desc->log2_chroma_w;
+ int vsub = desc->log2_chroma_h;
+
+ av_freep(&s->buf);
+ s->buf = av_mallocz((FFALIGN(inlink->w, 16) * (s->radius + 1) / 2 + 32) * sizeof(uint16_t));
+ if (!s->buf)
return AVERROR(ENOMEM);
- gf->chroma_w = -((-inlink->w) >> hsub);
- gf->chroma_h = -((-inlink->h) >> vsub);
- gf->chroma_r = av_clip(((((gf->radius >> hsub) + (gf->radius >> vsub)) / 2 ) + 1) & ~1, 4, 32);
+ s->chroma_w = -((-inlink->w) >> hsub);
+ s->chroma_h = -((-inlink->h) >> vsub);
+ s->chroma_r = av_clip(((((s->radius >> hsub) + (s->radius >> vsub)) / 2 ) + 1) & ~1, 4, 32);
return 0;
}
-static void start_frame(AVFilterLink *inlink, AVFilterBufferRef *inpicref)
+static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
+ GradFunContext *s = inlink->dst->priv;
AVFilterLink *outlink = inlink->dst->outputs[0];
- AVFilterBufferRef *outpicref;
-
- if (inpicref->perms & AV_PERM_PRESERVE) {
- outpicref = avfilter_get_video_buffer(outlink, AV_PERM_WRITE, outlink->w, outlink->h);
- avfilter_copy_buffer_ref_props(outpicref, inpicref);
- outpicref->video->w = outlink->w;
- outpicref->video->h = outlink->h;
- } else
- outpicref = inpicref;
-
- outlink->out_buf = outpicref;
- avfilter_start_frame(outlink, avfilter_ref_buffer(outpicref, ~0));
-}
-
-static void null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir) { }
+ AVFrame *out;
+ int p, direct;
+
+ if (av_frame_is_writable(in)) {
+ direct = 1;
+ out = in;
+ } else {
+ direct = 0;
+ out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
+ if (!out) {
+ av_frame_free(&in);
+ return AVERROR(ENOMEM);
+ }
-static void end_frame(AVFilterLink *inlink)
-{
- GradFunContext *gf = inlink->dst->priv;
- AVFilterBufferRef *inpic = inlink->cur_buf;
- AVFilterLink *outlink = inlink->dst->outputs[0];
- AVFilterBufferRef *outpic = outlink->out_buf;
- int p;
+ av_frame_copy_props(out, in);
+ out->width = outlink->w;
+ out->height = outlink->h;
+ }
- for (p = 0; p < 4 && inpic->data[p]; p++) {
+ for (p = 0; p < 4 && in->data[p]; p++) {
int w = inlink->w;
int h = inlink->h;
- int r = gf->radius;
+ int r = s->radius;
if (p) {
- w = gf->chroma_w;
- h = gf->chroma_h;
- r = gf->chroma_r;
+ w = s->chroma_w;
+ h = s->chroma_h;
+ r = s->chroma_r;
}
if (FFMIN(w, h) > 2 * r)
- filter(gf, outpic->data[p], inpic->data[p], w, h, outpic->linesize[p], inpic->linesize[p], r);
- else if (outpic->data[p] != inpic->data[p])
- av_image_copy_plane(outpic->data[p], outpic->linesize[p], inpic->data[p], inpic->linesize[p], w, h);
+ filter(s, out->data[p], in->data[p], w, h, out->linesize[p], in->linesize[p], r);
+ else if (out->data[p] != in->data[p])
+ av_image_copy_plane(out->data[p], out->linesize[p], in->data[p], in->linesize[p], w, h);
}
- avfilter_draw_slice(outlink, 0, inlink->h, 1);
- avfilter_end_frame(outlink);
- avfilter_unref_buffer(inpic);
- avfilter_unref_buffer(outpic);
+ if (!direct)
+ av_frame_free(&in);
+
+ return ff_filter_frame(outlink, out);
}
-AVFilter avfilter_vf_gradfun = {
+#define OFFSET(x) offsetof(GradFunContext, x)
+#define FLAGS AV_OPT_FLAG_VIDEO_PARAM
+static const AVOption options[] = {
+ { "strength", "The maximum amount by which the filter will change any one pixel.", OFFSET(strength), AV_OPT_TYPE_FLOAT, { .dbl = 1.2 }, 0.51, 64, FLAGS },
+ { "radius", "The neighborhood to fit the gradient to.", OFFSET(radius), AV_OPT_TYPE_INT, { .i64 = 16 }, 4, 32, FLAGS },
+ { NULL },
+};
+
+static const AVClass gradfun_class = {
+ .class_name = "gradfun",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
+static const AVFilterPad avfilter_vf_gradfun_inputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .config_props = config_input,
+ .filter_frame = filter_frame,
+ },
+ { NULL }
+};
+
+static const AVFilterPad avfilter_vf_gradfun_outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ },
+ { NULL }
+};
+
+AVFilter ff_vf_gradfun = {
.name = "gradfun",
.description = NULL_IF_CONFIG_SMALL("Debands video quickly using gradients."),
.priv_size = sizeof(GradFunContext),
+ .priv_class = &gradfun_class,
.init = init,
.uninit = uninit,
.query_formats = query_formats,
- .inputs = (AVFilterPad[]) {{ .name = "default",
- .type = AVMEDIA_TYPE_VIDEO,
- .config_props = config_input,
- .start_frame = start_frame,
- .draw_slice = null_draw_slice,
- .end_frame = end_frame,
- .min_perms = AV_PERM_READ, },
- { .name = NULL}},
- .outputs = (AVFilterPad[]) {{ .name = "default",
- .type = AVMEDIA_TYPE_VIDEO, },
- { .name = NULL}},
+ .inputs = avfilter_vf_gradfun_inputs,
+ .outputs = avfilter_vf_gradfun_outputs,
};
projects / ffmpeg / blobdiff