ffmpeg/libavfilter/vf_idet.c
Michael Niedermayer a05a44e205 Merge commit '7e350379f87e7f74420b4813170fe808e2313911'
* commit '7e350379f87e7f74420b4813170fe808e2313911':
  lavfi: switch to AVFrame.

Conflicts:
	doc/filters.texi
	libavfilter/af_ashowinfo.c
	libavfilter/audio.c
	libavfilter/avfilter.c
	libavfilter/avfilter.h
	libavfilter/buffersink.c
	libavfilter/buffersrc.c
	libavfilter/buffersrc.h
	libavfilter/f_select.c
	libavfilter/f_setpts.c
	libavfilter/fifo.c
	libavfilter/split.c
	libavfilter/src_movie.c
	libavfilter/version.h
	libavfilter/vf_aspect.c
	libavfilter/vf_bbox.c
	libavfilter/vf_blackframe.c
	libavfilter/vf_delogo.c
	libavfilter/vf_drawbox.c
	libavfilter/vf_drawtext.c
	libavfilter/vf_fade.c
	libavfilter/vf_fieldorder.c
	libavfilter/vf_fps.c
	libavfilter/vf_frei0r.c
	libavfilter/vf_gradfun.c
	libavfilter/vf_hqdn3d.c
	libavfilter/vf_lut.c
	libavfilter/vf_overlay.c
	libavfilter/vf_pad.c
	libavfilter/vf_scale.c
	libavfilter/vf_showinfo.c
	libavfilter/vf_transpose.c
	libavfilter/vf_vflip.c
	libavfilter/vf_yadif.c
	libavfilter/video.c
	libavfilter/vsrc_testsrc.c
	libavfilter/yadif.h

Following are notes about the merge authorship and various technical details.

Michael Niedermayer:
  * Main merge operation, notably avfilter.c and video.c
  * Switch to AVFrame:
    - afade
    - anullsrc
    - apad
    - aresample
    - blackframe
    - deshake
    - idet
    - il
    - mandelbrot
    - mptestsrc
    - noise
    - setfield
    - smartblur
    - tinterlace
  * various merge changes and fixes in:
    - ashowinfo
    - blackdetect
    - field
    - fps
    - select
    - testsrc
    - yadif

Nicolas George:
  * Switch to AVFrame:
    - make rawdec work with refcounted frames. Adapted from commit
      759001c534 by Anton Khirnov.
      Also, fix the use of || instead of | in a flags check.
    - make buffer sink and src, audio and video work all together

Clément Bœsch:
  * Switch to AVFrame:
    - aevalsrc
    - alphaextract
    - blend
    - cellauto
    - colormatrix
    - concat
    - earwax
    - ebur128
    - edgedetect
    - geq
    - histeq
    - histogram
    - hue
    - kerndeint
    - life
    - movie
    - mp (with the help of Michael)
    - overlay
    - pad
    - pan
    - pp
    - pp
    - removelogo
    - sendcmd
    - showspectrum
    - showwaves
    - silencedetect
    - stereo3d
    - subtitles
    - super2xsai
    - swapuv
    - thumbnail
    - tile

Hendrik Leppkes:
  * Switch to AVFrame:
    - aconvert
    - amerge
    - asetnsamples
    - atempo
    - biquads

Matthieu Bouron:
  * Switch to AVFrame
    - alphamerge
    - decimate
    - volumedetect

Stefano Sabatini:
  * Switch to AVFrame:
    - astreamsync
    - flite
    - framestep

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Nicolas George <nicolas.george@normalesup.org>
Signed-off-by: Clément Bœsch <ubitux@gmail.com>
Signed-off-by: Hendrik Leppkes <h.leppkes@gmail.com>
Signed-off-by: Matthieu Bouron <matthieu.bouron@gmail.com>
Signed-off-by: Stefano Sabatini <stefasab@gmail.com>

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2013-03-10 01:40:35 +01:00

329 lines
8.9 KiB
C

/*
* Copyright (C) 2012 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* 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
* 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
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <float.h> /* FLT_MAX */
#include "libavutil/cpu.h"
#include "libavutil/common.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "internal.h"
#define HIST_SIZE 4
typedef enum {
TFF,
BFF,
PROGRSSIVE,
UNDETERMINED,
} Type;
typedef struct {
const AVClass *class;
float interlace_threshold;
float progressive_threshold;
Type last_type;
int prestat[4];
int poststat[4];
uint8_t history[HIST_SIZE];
AVFrame *cur;
AVFrame *next;
AVFrame *prev;
int (*filter_line)(const uint8_t *prev, const uint8_t *cur, const uint8_t *next, int w);
const AVPixFmtDescriptor *csp;
} IDETContext;
#define OFFSET(x) offsetof(IDETContext, x)
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
static const AVOption idet_options[] = {
{ "intl_thres", "set interlacing threshold", OFFSET(interlace_threshold), AV_OPT_TYPE_FLOAT, {.dbl = 1.04}, -1, FLT_MAX, FLAGS },
{ "prog_thres", "set progressive threshold", OFFSET(progressive_threshold), AV_OPT_TYPE_FLOAT, {.dbl = 1.5}, -1, FLT_MAX, FLAGS },
{ NULL }
};
AVFILTER_DEFINE_CLASS(idet);
static const char *type2str(Type type)
{
switch(type) {
case TFF : return "Top Field First ";
case BFF : return "Bottom Field First";
case PROGRSSIVE : return "Progressive ";
case UNDETERMINED: return "Undetermined ";
}
return NULL;
}
static int filter_line_c(const uint8_t *a, const uint8_t *b, const uint8_t *c, int w)
{
int x;
int ret=0;
for(x=0; x<w; x++){
int v = (*a++ + *c++) - 2 * *b++;
ret += FFABS(v);
}
return ret;
}
static int filter_line_c_16bit(const uint16_t *a, const uint16_t *b, const uint16_t *c, int w)
{
int x;
int ret=0;
for(x=0; x<w; x++){
int v = (*a++ + *c++) - 2 * *b++;
ret += FFABS(v);
}
return ret;
}
static void filter(AVFilterContext *ctx)
{
IDETContext *idet = ctx->priv;
int y, i;
int64_t alpha[2]={0};
int64_t delta=0;
Type type, best_type;
int match = 0;
for (i = 0; i < idet->csp->nb_components; i++) {
int w = idet->cur->width;
int h = idet->cur->height;
int refs = idet->cur->linesize[i];
if (i && i<3) {
w >>= idet->csp->log2_chroma_w;
h >>= idet->csp->log2_chroma_h;
}
for (y = 2; y < h - 2; y++) {
uint8_t *prev = &idet->prev->data[i][y*refs];
uint8_t *cur = &idet->cur ->data[i][y*refs];
uint8_t *next = &idet->next->data[i][y*refs];
alpha[ y &1] += idet->filter_line(cur-refs, prev, cur+refs, w);
alpha[(y^1)&1] += idet->filter_line(cur-refs, next, cur+refs, w);
delta += idet->filter_line(cur-refs, cur, cur+refs, w);
}
}
if (alpha[0] > idet->interlace_threshold * alpha[1]){
type = TFF;
}else if(alpha[1] > idet->interlace_threshold * alpha[0]){
type = BFF;
}else if(alpha[1] > idet->progressive_threshold * delta){
type = PROGRSSIVE;
}else{
type = UNDETERMINED;
}
memmove(idet->history+1, idet->history, HIST_SIZE-1);
idet->history[0] = type;
best_type = UNDETERMINED;
for(i=0; i<HIST_SIZE; i++){
if(idet->history[i] != UNDETERMINED){
if(best_type == UNDETERMINED)
best_type = idet->history[i];
if(idet->history[i] == best_type) {
match++;
}else{
match=0;
break;
}
}
}
if(idet->last_type == UNDETERMINED){
if(match ) idet->last_type = best_type;
}else{
if(match>2) idet->last_type = best_type;
}
if (idet->last_type == TFF){
idet->cur->top_field_first = 1;
idet->cur->interlaced_frame = 1;
}else if(idet->last_type == BFF){
idet->cur->top_field_first = 0;
idet->cur->interlaced_frame = 1;
}else if(idet->last_type == PROGRSSIVE){
idet->cur->interlaced_frame = 0;
}
idet->prestat [ type] ++;
idet->poststat[idet->last_type] ++;
av_log(ctx, AV_LOG_DEBUG, "Single frame:%s, Multi frame:%s\n", type2str(type), type2str(idet->last_type));
}
static int filter_frame(AVFilterLink *link, AVFrame *picref)
{
AVFilterContext *ctx = link->dst;
IDETContext *idet = ctx->priv;
if (idet->prev)
av_frame_free(&idet->prev);
idet->prev = idet->cur;
idet->cur = idet->next;
idet->next = picref;
if (!idet->cur)
return 0;
if (!idet->prev)
idet->prev = av_frame_clone(idet->cur);
if (!idet->csp)
idet->csp = av_pix_fmt_desc_get(link->format);
if (idet->csp->comp[0].depth_minus1 / 8 == 1)
idet->filter_line = (void*)filter_line_c_16bit;
filter(ctx);
return ff_filter_frame(ctx->outputs[0], av_frame_clone(idet->cur));
}
static int request_frame(AVFilterLink *link)
{
AVFilterContext *ctx = link->src;
IDETContext *idet = ctx->priv;
do {
int ret;
if ((ret = ff_request_frame(link->src->inputs[0])))
return ret;
} while (!idet->cur);
return 0;
}
static av_cold void uninit(AVFilterContext *ctx)
{
IDETContext *idet = ctx->priv;
av_log(ctx, AV_LOG_INFO, "Single frame detection: TFF:%d BFF:%d Progressive:%d Undetermined:%d\n",
idet->prestat[TFF],
idet->prestat[BFF],
idet->prestat[PROGRSSIVE],
idet->prestat[UNDETERMINED]
);
av_log(ctx, AV_LOG_INFO, "Multi frame detection: TFF:%d BFF:%d Progressive:%d Undetermined:%d\n",
idet->poststat[TFF],
idet->poststat[BFF],
idet->poststat[PROGRSSIVE],
idet->poststat[UNDETERMINED]
);
av_frame_free(&idet->prev);
av_frame_free(&idet->cur );
av_frame_free(&idet->next);
}
static int query_formats(AVFilterContext *ctx)
{
static const 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_GRAY8,
AV_PIX_FMT_YUVJ420P,
AV_PIX_FMT_YUVJ422P,
AV_PIX_FMT_YUVJ444P,
AV_NE( AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_GRAY16LE ),
AV_PIX_FMT_YUV440P,
AV_PIX_FMT_YUVJ440P,
AV_NE( AV_PIX_FMT_YUV420P10BE, AV_PIX_FMT_YUV420P10LE ),
AV_NE( AV_PIX_FMT_YUV422P10BE, AV_PIX_FMT_YUV422P10LE ),
AV_NE( AV_PIX_FMT_YUV444P10BE, AV_PIX_FMT_YUV444P10LE ),
AV_NE( AV_PIX_FMT_YUV420P16BE, AV_PIX_FMT_YUV420P16LE ),
AV_NE( AV_PIX_FMT_YUV422P16BE, AV_PIX_FMT_YUV422P16LE ),
AV_NE( AV_PIX_FMT_YUV444P16BE, AV_PIX_FMT_YUV444P16LE ),
AV_PIX_FMT_YUVA420P,
AV_PIX_FMT_NONE
};
ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
return 0;
}
static av_cold int init(AVFilterContext *ctx, const char *args)
{
IDETContext *idet = ctx->priv;
static const char *shorthand[] = { "intl_thres", "prog_thres", NULL };
int ret;
idet->class = &idet_class;
av_opt_set_defaults(idet);
if ((ret = av_opt_set_from_string(idet, args, shorthand, "=", ":")) < 0)
return ret;
idet->last_type = UNDETERMINED;
memset(idet->history, UNDETERMINED, HIST_SIZE);
idet->filter_line = filter_line_c;
return 0;
}
static const AVFilterPad idet_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = filter_frame,
.min_perms = AV_PERM_PRESERVE,
},
{ NULL }
};
static const AVFilterPad idet_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.rej_perms = AV_PERM_WRITE,
.request_frame = request_frame,
},
{ NULL }
};
AVFilter avfilter_vf_idet = {
.name = "idet",
.description = NULL_IF_CONFIG_SMALL("Interlace detect Filter."),
.priv_size = sizeof(IDETContext),
.init = init,
.uninit = uninit,
.query_formats = query_formats,
.inputs = idet_inputs,
.outputs = idet_outputs,
.priv_class = &idet_class,
};