[deb_ffmpeg.git] / ffmpeg / libavfilter / vf_idet.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 "internal.h"
#include "vf_idet.h"

#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 },
    { "rep_thres",  "set repeat threshold",      OFFSET(repeat_threshold),      AV_OPT_TYPE_FLOAT, {.dbl = 3.0},  -1, FLT_MAX, FLAGS },
    { "half_life", "half life of cumulative statistics", OFFSET(half_life),     AV_OPT_TYPE_FLOAT, {.dbl = 0.0},  -1, INT_MAX, FLAGS },
    { NULL }
};

AVFILTER_DEFINE_CLASS(idet);

static const char *type2str(Type type)
{
    switch(type) {
        case TFF          : return "tff";
        case BFF          : return "bff";
        case PROGRESSIVE  : return "progressive";
        case UNDETERMINED : return "undetermined";
    }
    return NULL;
}

#define PRECISION 1048576

static uint64_t uintpow(uint64_t b,unsigned int e)
{
    uint64_t r=1;
    while(e--) r*=b;
    return r;
}

static int av_dict_set_fxp(AVDictionary **pm, const char *key, uint64_t value, unsigned int digits,
                int flags)
{
    char valuestr[44];
    uint64_t print_precision = uintpow(10, digits);

    value = av_rescale(value, print_precision, PRECISION);

    snprintf(valuestr, sizeof(valuestr), "%"PRId64".%0*"PRId64,
             value / print_precision, digits, value % print_precision);

    return av_dict_set(pm, key, valuestr, flags);
}

static const char *rep2str(RepeatedField repeated_field)
{
    switch(repeated_field) {
        case REPEAT_NONE    : return "neither";
        case REPEAT_TOP     : return "top";
        case REPEAT_BOTTOM  : return "bottom";
    }
    return NULL;
}

int ff_idet_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;
}

int ff_idet_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;
    int64_t gamma[2]={0};
    Type type, best_type;
    RepeatedField repeat;
    int match = 0;
    AVDictionary **metadata = avpriv_frame_get_metadatap(idet->cur);

    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 = FF_CEIL_RSHIFT(w, idet->csp->log2_chroma_w);
            h = FF_CEIL_RSHIFT(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);
            gamma[(y^1)&1] += idet->filter_line(cur     , prev, cur     , 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 = PROGRESSIVE;
    }else{
        type = UNDETERMINED;
    }

    if ( gamma[0] > idet->repeat_threshold * gamma[1] ){
        repeat = REPEAT_TOP;
    } else if ( gamma[1] > idet->repeat_threshold * gamma[0] ){
        repeat = REPEAT_BOTTOM;
    } else {
        repeat = REPEAT_NONE;
    }

    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 == PROGRESSIVE){
        idet->cur->interlaced_frame = 0;
    }

    for(i=0; i<3; i++)
        idet->repeats[i]  = av_rescale(idet->repeats [i], idet->decay_coefficient, PRECISION);

    for(i=0; i<4; i++){
        idet->prestat [i] = av_rescale(idet->prestat [i], idet->decay_coefficient, PRECISION);
        idet->poststat[i] = av_rescale(idet->poststat[i], idet->decay_coefficient, PRECISION);
    }

    idet->total_repeats [         repeat] ++;
    idet->repeats       [         repeat] += PRECISION;

    idet->total_prestat [           type] ++;
    idet->prestat       [           type] += PRECISION;

    idet->total_poststat[idet->last_type] ++;
    idet->poststat      [idet->last_type] += PRECISION;

    av_log(ctx, AV_LOG_DEBUG, "Repeated Field:%12s, Single frame:%12s, Multi frame:%12s\n",
           rep2str(repeat), type2str(type), type2str(idet->last_type));

    av_dict_set    (metadata, "lavfi.idet.repeated.current_frame", rep2str(repeat), 0);
    av_dict_set_fxp(metadata, "lavfi.idet.repeated.neither",       idet->repeats[REPEAT_NONE], 2, 0);
    av_dict_set_fxp(metadata, "lavfi.idet.repeated.top",           idet->repeats[REPEAT_TOP], 2, 0);
    av_dict_set_fxp(metadata, "lavfi.idet.repeated.bottom",        idet->repeats[REPEAT_BOTTOM], 2, 0);

    av_dict_set    (metadata, "lavfi.idet.single.current_frame",   type2str(type), 0);
    av_dict_set_fxp(metadata, "lavfi.idet.single.tff",             idet->prestat[TFF], 2 , 0);
    av_dict_set_fxp(metadata, "lavfi.idet.single.bff",             idet->prestat[BFF], 2, 0);
    av_dict_set_fxp(metadata, "lavfi.idet.single.progressive",     idet->prestat[PROGRESSIVE], 2, 0);
    av_dict_set_fxp(metadata, "lavfi.idet.single.undetermined",    idet->prestat[UNDETERMINED], 2, 0);

    av_dict_set    (metadata, "lavfi.idet.multiple.current_frame", type2str(idet->last_type), 0);
    av_dict_set_fxp(metadata, "lavfi.idet.multiple.tff",           idet->poststat[TFF], 2, 0);
    av_dict_set_fxp(metadata, "lavfi.idet.multiple.bff",           idet->poststat[BFF], 2, 0);
    av_dict_set_fxp(metadata, "lavfi.idet.multiple.progressive",   idet->poststat[PROGRESSIVE], 2, 0);
    av_dict_set_fxp(metadata, "lavfi.idet.multiple.undetermined",  idet->poststat[UNDETERMINED], 2, 0);
}

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 &&
        !(idet->cur = av_frame_clone(idet->next)))
        return AVERROR(ENOMEM);

    if (!idet->prev)
        return 0;

    if (!idet->csp)
        idet->csp = av_pix_fmt_desc_get(link->format);
    if (idet->csp->comp[0].depth_minus1 / 8 == 1){
        idet->filter_line = (ff_idet_filter_func)ff_idet_filter_line_c_16bit;
        if (ARCH_X86)
            ff_idet_init_x86(idet, 1);
    }

    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 (idet->eof)
            return AVERROR_EOF;

        ret = ff_request_frame(link->src->inputs[0]);

        if (ret == AVERROR_EOF && idet->cur) {
            AVFrame *next = av_frame_clone(idet->next);

            if (!next)
                return AVERROR(ENOMEM);

            filter_frame(link->src->inputs[0], next);
            idet->eof = 1;
        } else if (ret < 0) {
            return ret;
        }
    } while (!idet->prev);

    return 0;
}

static av_cold void uninit(AVFilterContext *ctx)
{
    IDETContext *idet = ctx->priv;

    av_log(ctx, AV_LOG_INFO, "Repeated Fields: Neither:%6"PRId64" Top:%6"PRId64" Bottom:%6"PRId64"\n",
           idet->total_repeats[REPEAT_NONE],
           idet->total_repeats[REPEAT_TOP],
           idet->total_repeats[REPEAT_BOTTOM]
        );
    av_log(ctx, AV_LOG_INFO, "Single frame detection: TFF:%6"PRId64" BFF:%6"PRId64" Progressive:%6"PRId64" Undetermined:%6"PRId64"\n",
           idet->total_prestat[TFF],
           idet->total_prestat[BFF],
           idet->total_prestat[PROGRESSIVE],
           idet->total_prestat[UNDETERMINED]
        );
    av_log(ctx, AV_LOG_INFO, "Multi frame detection: TFF:%6"PRId64" BFF:%6"PRId64" Progressive:%6"PRId64" Undetermined:%6"PRId64"\n",
           idet->total_poststat[TFF],
           idet->total_poststat[BFF],
           idet->total_poststat[PROGRESSIVE],
           idet->total_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_PIX_FMT_GRAY16,
        AV_PIX_FMT_YUV440P,
        AV_PIX_FMT_YUVJ440P,
        AV_PIX_FMT_YUV420P10,
        AV_PIX_FMT_YUV422P10,
        AV_PIX_FMT_YUV444P10,
        AV_PIX_FMT_YUV420P16,
        AV_PIX_FMT_YUV422P16,
        AV_PIX_FMT_YUV444P16,
        AV_PIX_FMT_YUVA420P,
        AV_PIX_FMT_NONE
    };

    ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));

    return 0;
}

static int config_output(AVFilterLink *outlink)
{
    outlink->flags |= FF_LINK_FLAG_REQUEST_LOOP;
    return 0;
}

static av_cold int init(AVFilterContext *ctx)
{
    IDETContext *idet = ctx->priv;

    idet->eof = 0;
    idet->last_type = UNDETERMINED;
    memset(idet->history, UNDETERMINED, HIST_SIZE);

    if( idet->half_life > 0 )
        idet->decay_coefficient = (uint64_t) round( PRECISION * exp2(-1.0 / idet->half_life) );
    else
        idet->decay_coefficient = PRECISION;

    idet->filter_line = ff_idet_filter_line_c;

    if (ARCH_X86)
        ff_idet_init_x86(idet, 0);

    return 0;
}

static const AVFilterPad idet_inputs[] = {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_VIDEO,
        .filter_frame = filter_frame,
    },
    { NULL }
};

static const AVFilterPad idet_outputs[] = {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_VIDEO,
        .config_props = config_output,
        .request_frame = request_frame
    },
    { NULL }
};

AVFilter ff_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,
};
Commit	Line	Data
2ba45a60 DM	1	/*
	2	* Copyright (C) 2012 Michael Niedermayer <michaelni@gmx.at>
	3	*
	4	* This file is part of FFmpeg.
	5	*
	6	* FFmpeg is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU Lesser General Public
	8	* License as published by the Free Software Foundation; either
	9	* version 2.1 of the License, or (at your option) any later version.
	10	*
	11	* FFmpeg is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* Lesser General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU Lesser General Public
	17	* License along with FFmpeg; if not, write to the Free Software
	18	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	19	*/
	20
	21	#include <float.h> /* FLT_MAX */
	22
	23	#include "libavutil/cpu.h"
	24	#include "libavutil/common.h"
	25	#include "libavutil/opt.h"
	26	#include "internal.h"
	27	#include "vf_idet.h"
	28
	29	#define OFFSET(x) offsetof(IDETContext, x)
	30	#define FLAGS AV_OPT_FLAG_VIDEO_PARAM\|AV_OPT_FLAG_FILTERING_PARAM
	31
	32	static const AVOption idet_options[] = {
	33	{ "intl_thres", "set interlacing threshold", OFFSET(interlace_threshold), AV_OPT_TYPE_FLOAT, {.dbl = 1.04}, -1, FLT_MAX, FLAGS },
	34	{ "prog_thres", "set progressive threshold", OFFSET(progressive_threshold), AV_OPT_TYPE_FLOAT, {.dbl = 1.5}, -1, FLT_MAX, FLAGS },
f6fa7814 DM	35	{ "rep_thres", "set repeat threshold", OFFSET(repeat_threshold), AV_OPT_TYPE_FLOAT, {.dbl = 3.0}, -1, FLT_MAX, FLAGS },
f6fa7814 DM	36	{ "half_life", "half life of cumulative statistics", OFFSET(half_life), AV_OPT_TYPE_FLOAT, {.dbl = 0.0}, -1, INT_MAX, FLAGS },
2ba45a60 DM	37	{ NULL }
	38	};
	39
	40	AVFILTER_DEFINE_CLASS(idet);
	41
	42	static const char *type2str(Type type)
	43	{
	44	switch(type) {
f6fa7814 DM	45	case TFF : return "tff";
	46	case BFF : return "bff";
	47	case PROGRESSIVE : return "progressive";
	48	case UNDETERMINED : return "undetermined";
	49	}
	50	return NULL;
	51	}
	52
	53	#define PRECISION 1048576
	54
	55	static uint64_t uintpow(uint64_t b,unsigned int e)
	56	{
	57	uint64_t r=1;
	58	while(e--) r*=b;
	59	return r;
	60	}
	61
	62	static int av_dict_set_fxp(AVDictionary *pm, const char key, uint64_t value, unsigned int digits,
	63	int flags)
	64	{
	65	char valuestr[44];
	66	uint64_t print_precision = uintpow(10, digits);
	67
	68	value = av_rescale(value, print_precision, PRECISION);
	69
	70	snprintf(valuestr, sizeof(valuestr), "%"PRId64".%0*"PRId64,
	71	value / print_precision, digits, value % print_precision);
	72
	73	return av_dict_set(pm, key, valuestr, flags);
	74	}
	75
	76	static const char *rep2str(RepeatedField repeated_field)
	77	{
	78	switch(repeated_field) {
	79	case REPEAT_NONE : return "neither";
	80	case REPEAT_TOP : return "top";
	81	case REPEAT_BOTTOM : return "bottom";
2ba45a60 DM	82	}
	83	return NULL;
	84	}
	85
	86	int ff_idet_filter_line_c(const uint8_t a, const uint8_t b, const uint8_t *c, int w)
	87	{
	88	int x;
	89	int ret=0;
	90
	91	for(x=0; x<w; x++){
	92	int v = (a++ + c++) - 2 * *b++;
	93	ret += FFABS(v);
	94	}
	95
	96	return ret;
	97	}
	98
	99	int ff_idet_filter_line_c_16bit(const uint16_t a, const uint16_t b, const uint16_t *c, int w)
	100	{
	101	int x;
	102	int ret=0;
	103
	104	for(x=0; x<w; x++){
	105	int v = (a++ + c++) - 2 * *b++;
	106	ret += FFABS(v);
	107	}
	108
	109	return ret;
	110	}
	111
	112	static void filter(AVFilterContext *ctx)
	113	{
	114	IDETContext *idet = ctx->priv;
	115	int y, i;
	116	int64_t alpha[2]={0};
	117	int64_t delta=0;
f6fa7814	118	int64_t gamma[2]={0};
2ba45a60	119	Type type, best_type;
f6fa7814	120	RepeatedField repeat;
2ba45a60	121	int match = 0;
f6fa7814	122	AVDictionary **metadata = avpriv_frame_get_metadatap(idet->cur);
2ba45a60 DM	123
	124	for (i = 0; i < idet->csp->nb_components; i++) {
	125	int w = idet->cur->width;
	126	int h = idet->cur->height;
	127	int refs = idet->cur->linesize[i];
	128
	129	if (i && i<3) {
	130	w = FF_CEIL_RSHIFT(w, idet->csp->log2_chroma_w);
	131	h = FF_CEIL_RSHIFT(h, idet->csp->log2_chroma_h);
	132	}
	133
	134	for (y = 2; y < h - 2; y++) {
	135	uint8_t prev = &idet->prev->data[i][yrefs];
	136	uint8_t cur = &idet->cur ->data[i][yrefs];
	137	uint8_t next = &idet->next->data[i][yrefs];
	138	alpha[ y &1] += idet->filter_line(cur-refs, prev, cur+refs, w);
	139	alpha[(y^1)&1] += idet->filter_line(cur-refs, next, cur+refs, w);
	140	delta += idet->filter_line(cur-refs, cur, cur+refs, w);
f6fa7814	141	gamma[(y^1)&1] += idet->filter_line(cur , prev, cur , w);
2ba45a60 DM	142	}
	143	}
	144
	145	if (alpha[0] > idet->interlace_threshold * alpha[1]){
	146	type = TFF;
	147	}else if(alpha[1] > idet->interlace_threshold * alpha[0]){
	148	type = BFF;
	149	}else if(alpha[1] > idet->progressive_threshold * delta){
f6fa7814	150	type = PROGRESSIVE;
2ba45a60 DM	151	}else{
	152	type = UNDETERMINED;
	153	}
	154
f6fa7814 DM	155	if ( gamma[0] > idet->repeat_threshold * gamma[1] ){
	156	repeat = REPEAT_TOP;
	157	} else if ( gamma[1] > idet->repeat_threshold * gamma[0] ){
	158	repeat = REPEAT_BOTTOM;
	159	} else {
	160	repeat = REPEAT_NONE;
	161	}
	162
2ba45a60 DM	163	memmove(idet->history+1, idet->history, HIST_SIZE-1);
	164	idet->history[0] = type;
	165	best_type = UNDETERMINED;
	166	for(i=0; i<HIST_SIZE; i++){
	167	if(idet->history[i] != UNDETERMINED){
	168	if(best_type == UNDETERMINED)
	169	best_type = idet->history[i];
	170
	171	if(idet->history[i] == best_type) {
	172	match++;
	173	}else{
	174	match=0;
	175	break;
	176	}
	177	}
	178	}
	179	if(idet->last_type == UNDETERMINED){
	180	if(match ) idet->last_type = best_type;
	181	}else{
	182	if(match>2) idet->last_type = best_type;
	183	}
	184
	185	if (idet->last_type == TFF){
	186	idet->cur->top_field_first = 1;
	187	idet->cur->interlaced_frame = 1;
	188	}else if(idet->last_type == BFF){
	189	idet->cur->top_field_first = 0;
	190	idet->cur->interlaced_frame = 1;
f6fa7814	191	}else if(idet->last_type == PROGRESSIVE){
2ba45a60 DM	192	idet->cur->interlaced_frame = 0;
	193	}
	194
f6fa7814 DM	195	for(i=0; i<3; i++)
	196	idet->repeats[i] = av_rescale(idet->repeats [i], idet->decay_coefficient, PRECISION);
	197
	198	for(i=0; i<4; i++){
	199	idet->prestat [i] = av_rescale(idet->prestat [i], idet->decay_coefficient, PRECISION);
	200	idet->poststat[i] = av_rescale(idet->poststat[i], idet->decay_coefficient, PRECISION);
	201	}
	202
	203	idet->total_repeats [ repeat] ++;
	204	idet->repeats [ repeat] += PRECISION;
	205
	206	idet->total_prestat [ type] ++;
	207	idet->prestat [ type] += PRECISION;
	208
	209	idet->total_poststat[idet->last_type] ++;
	210	idet->poststat [idet->last_type] += PRECISION;
	211
	212	av_log(ctx, AV_LOG_DEBUG, "Repeated Field:%12s, Single frame:%12s, Multi frame:%12s\n",
	213	rep2str(repeat), type2str(type), type2str(idet->last_type));
	214
	215	av_dict_set (metadata, "lavfi.idet.repeated.current_frame", rep2str(repeat), 0);
	216	av_dict_set_fxp(metadata, "lavfi.idet.repeated.neither", idet->repeats[REPEAT_NONE], 2, 0);
	217	av_dict_set_fxp(metadata, "lavfi.idet.repeated.top", idet->repeats[REPEAT_TOP], 2, 0);
	218	av_dict_set_fxp(metadata, "lavfi.idet.repeated.bottom", idet->repeats[REPEAT_BOTTOM], 2, 0);
	219
	220	av_dict_set (metadata, "lavfi.idet.single.current_frame", type2str(type), 0);
	221	av_dict_set_fxp(metadata, "lavfi.idet.single.tff", idet->prestat[TFF], 2 , 0);
	222	av_dict_set_fxp(metadata, "lavfi.idet.single.bff", idet->prestat[BFF], 2, 0);
	223	av_dict_set_fxp(metadata, "lavfi.idet.single.progressive", idet->prestat[PROGRESSIVE], 2, 0);
	224	av_dict_set_fxp(metadata, "lavfi.idet.single.undetermined", idet->prestat[UNDETERMINED], 2, 0);
	225
	226	av_dict_set (metadata, "lavfi.idet.multiple.current_frame", type2str(idet->last_type), 0);
	227	av_dict_set_fxp(metadata, "lavfi.idet.multiple.tff", idet->poststat[TFF], 2, 0);
	228	av_dict_set_fxp(metadata, "lavfi.idet.multiple.bff", idet->poststat[BFF], 2, 0);
	229	av_dict_set_fxp(metadata, "lavfi.idet.multiple.progressive", idet->poststat[PROGRESSIVE], 2, 0);
	230	av_dict_set_fxp(metadata, "lavfi.idet.multiple.undetermined", idet->poststat[UNDETERMINED], 2, 0);
2ba45a60 DM	231	}
	232
	233	static int filter_frame(AVFilterLink link, AVFrame picref)
	234	{
	235	AVFilterContext *ctx = link->dst;
	236	IDETContext *idet = ctx->priv;
	237
	238	if (idet->prev)
	239	av_frame_free(&idet->prev);
	240	idet->prev = idet->cur;
	241	idet->cur = idet->next;
	242	idet->next = picref;
	243
f6fa7814 DM	244	if (!idet->cur &&
	245	!(idet->cur = av_frame_clone(idet->next)))
	246	return AVERROR(ENOMEM);
2ba45a60 DM	247
2ba45a60 DM	248	if (!idet->prev)
f6fa7814	249	return 0;
2ba45a60 DM	250
	251	if (!idet->csp)
	252	idet->csp = av_pix_fmt_desc_get(link->format);
	253	if (idet->csp->comp[0].depth_minus1 / 8 == 1){
	254	idet->filter_line = (ff_idet_filter_func)ff_idet_filter_line_c_16bit;
	255	if (ARCH_X86)
	256	ff_idet_init_x86(idet, 1);
	257	}
	258
	259	filter(ctx);
	260
	261	return ff_filter_frame(ctx->outputs[0], av_frame_clone(idet->cur));
	262	}
	263
f6fa7814 DM	264	static int request_frame(AVFilterLink *link)
	265	{
	266	AVFilterContext *ctx = link->src;
	267	IDETContext *idet = ctx->priv;
	268
	269	do {
	270	int ret;
	271
	272	if (idet->eof)
	273	return AVERROR_EOF;
	274
	275	ret = ff_request_frame(link->src->inputs[0]);
	276
	277	if (ret == AVERROR_EOF && idet->cur) {
	278	AVFrame *next = av_frame_clone(idet->next);
	279
	280	if (!next)
	281	return AVERROR(ENOMEM);
	282
	283	filter_frame(link->src->inputs[0], next);
	284	idet->eof = 1;
	285	} else if (ret < 0) {
	286	return ret;
	287	}
	288	} while (!idet->prev);
	289
	290	return 0;
	291	}
	292
2ba45a60 DM	293	static av_cold void uninit(AVFilterContext *ctx)
	294	{
	295	IDETContext *idet = ctx->priv;
	296
f6fa7814 DM	297	av_log(ctx, AV_LOG_INFO, "Repeated Fields: Neither:%6"PRId64" Top:%6"PRId64" Bottom:%6"PRId64"\n",
	298	idet->total_repeats[REPEAT_NONE],
	299	idet->total_repeats[REPEAT_TOP],
	300	idet->total_repeats[REPEAT_BOTTOM]
	301	);
	302	av_log(ctx, AV_LOG_INFO, "Single frame detection: TFF:%6"PRId64" BFF:%6"PRId64" Progressive:%6"PRId64" Undetermined:%6"PRId64"\n",
	303	idet->total_prestat[TFF],
	304	idet->total_prestat[BFF],
	305	idet->total_prestat[PROGRESSIVE],
	306	idet->total_prestat[UNDETERMINED]
	307	);
	308	av_log(ctx, AV_LOG_INFO, "Multi frame detection: TFF:%6"PRId64" BFF:%6"PRId64" Progressive:%6"PRId64" Undetermined:%6"PRId64"\n",
	309	idet->total_poststat[TFF],
	310	idet->total_poststat[BFF],
	311	idet->total_poststat[PROGRESSIVE],
	312	idet->total_poststat[UNDETERMINED]
	313	);
2ba45a60 DM	314
	315	av_frame_free(&idet->prev);
	316	av_frame_free(&idet->cur );
	317	av_frame_free(&idet->next);
	318	}
	319
	320	static int query_formats(AVFilterContext *ctx)
	321	{
	322	static const enum AVPixelFormat pix_fmts[] = {
	323	AV_PIX_FMT_YUV420P,
	324	AV_PIX_FMT_YUV422P,
	325	AV_PIX_FMT_YUV444P,
	326	AV_PIX_FMT_YUV410P,
	327	AV_PIX_FMT_YUV411P,
	328	AV_PIX_FMT_GRAY8,
	329	AV_PIX_FMT_YUVJ420P,
	330	AV_PIX_FMT_YUVJ422P,
	331	AV_PIX_FMT_YUVJ444P,
	332	AV_PIX_FMT_GRAY16,
	333	AV_PIX_FMT_YUV440P,
	334	AV_PIX_FMT_YUVJ440P,
	335	AV_PIX_FMT_YUV420P10,
	336	AV_PIX_FMT_YUV422P10,
	337	AV_PIX_FMT_YUV444P10,
	338	AV_PIX_FMT_YUV420P16,
	339	AV_PIX_FMT_YUV422P16,
	340	AV_PIX_FMT_YUV444P16,
	341	AV_PIX_FMT_YUVA420P,
	342	AV_PIX_FMT_NONE
	343	};
	344
	345	ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
	346
	347	return 0;
	348	}
	349
	350	static int config_output(AVFilterLink *outlink)
	351	{
	352	outlink->flags \|= FF_LINK_FLAG_REQUEST_LOOP;
	353	return 0;
	354	}
	355
	356	static av_cold int init(AVFilterContext *ctx)
	357	{
	358	IDETContext *idet = ctx->priv;
	359
f6fa7814	360	idet->eof = 0;
2ba45a60 DM	361	idet->last_type = UNDETERMINED;
	362	memset(idet->history, UNDETERMINED, HIST_SIZE);
	363
f6fa7814 DM	364	if( idet->half_life > 0 )
	365	idet->decay_coefficient = (uint64_t) round( PRECISION * exp2(-1.0 / idet->half_life) );
	366	else
	367	idet->decay_coefficient = PRECISION;
	368
2ba45a60 DM	369	idet->filter_line = ff_idet_filter_line_c;
	370
	371	if (ARCH_X86)
	372	ff_idet_init_x86(idet, 0);
	373
	374	return 0;
	375	}
	376
2ba45a60 DM	377	static const AVFilterPad idet_inputs[] = {
	378	{
	379	.name = "default",
	380	.type = AVMEDIA_TYPE_VIDEO,
	381	.filter_frame = filter_frame,
	382	},
	383	{ NULL }
	384	};
	385
	386	static const AVFilterPad idet_outputs[] = {
	387	{
	388	.name = "default",
	389	.type = AVMEDIA_TYPE_VIDEO,
	390	.config_props = config_output,
f6fa7814	391	.request_frame = request_frame
2ba45a60 DM	392	},
	393	{ NULL }
	394	};
	395
	396	AVFilter ff_vf_idet = {
	397	.name = "idet",
	398	.description = NULL_IF_CONFIG_SMALL("Interlace detect Filter."),
	399	.priv_size = sizeof(IDETContext),
	400	.init = init,
	401	.uninit = uninit,
	402	.query_formats = query_formats,
	403	.inputs = idet_inputs,
	404	.outputs = idet_outputs,
	405	.priv_class = &idet_class,
	406	};