[libav.git] / vhook / fish.c

/*
 * Fish Detector Hook
 * Copyright (c) 2002 Philip Gladstone
 *
 * This file implements a fish detector. It is used to see when a 
 * goldfish passes in front of the camera. It does this by counting
 * the number of input pixels that fall within a particular HSV
 * range.
 *
 * It takes a multitude of arguments:
 *
 * -h <num>-<num>    the range of H values that are fish
 * -s <num>-<num>    the range of S values that are fish
 * -v <num>-<num>    the range of V values that are fish
 * -z                zap all non-fish values to black
 * -l <num>          limit the number of saved files to <num>
 * -i <num>          only check frames every <num> seconds
 * -t <num>          the threshold for the amount of fish pixels (range 0-1)
 * -d                turn debugging on
 * -D <directory>    where to put the fish images
 *
 * This library 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 of the License, or (at your option) any later version.
 *
 * This library 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 this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdarg.h>
#include <string.h>
#include <time.h>
#include <stdio.h>
#include <dirent.h>

#include "framehook.h"
#include "dsputil.h"

#define SCALEBITS 10
#define ONE_HALF  (1 << (SCALEBITS - 1))
#define FIX(x)    ((int) ((x) * (1<<SCALEBITS) + 0.5))

#define YUV_TO_RGB1_CCIR(cb1, cr1)\
{\
    cb = (cb1) - 128;\
    cr = (cr1) - 128;\
    r_add = FIX(1.40200*255.0/224.0) * cr + ONE_HALF;\
    g_add = - FIX(0.34414*255.0/224.0) * cb - FIX(0.71414*255.0/224.0) * cr + \
                    ONE_HALF;\
    b_add = FIX(1.77200*255.0/224.0) * cb + ONE_HALF;\
}

#define YUV_TO_RGB2_CCIR(r, g, b, y1)\
{\
    yt = ((y1) - 16) * FIX(255.0/219.0);\
    r = cm[(yt + r_add) >> SCALEBITS];\
    g = cm[(yt + g_add) >> SCALEBITS];\
    b = cm[(yt + b_add) >> SCALEBITS];\
}


typedef struct {
    int h;  /* 0 .. 360 */
    int s;  /* 0 .. 255 */
    int v;  /* 0 .. 255 */
} HSV;
              
typedef struct {
    int zapping;
    int threshold;
    HSV dark, bright;
    char *dir;
    int file_limit;
    int debug;
    int min_interval;
    int64_t next_pts;
    int inset;
    int min_width;
} ContextInfo;

static void dorange(const char *s, int *first, int *second, int maxval)
{
    sscanf(s, "%d-%d", first, second);
    if (*first > maxval)
        *first = maxval;
    if (*second > maxval)
        *second = maxval;
}

void Release(void *ctx)
{
    if (ctx)
        av_free(ctx);
}

int Configure(void **ctxp, int argc, char *argv[])
{
    ContextInfo *ci;
    int c;

    *ctxp = av_mallocz(sizeof(ContextInfo));
    ci = (ContextInfo *) *ctxp;

    optind = 0;

    ci->dir = "/tmp";
    ci->threshold = 100;
    ci->file_limit = 100;
    ci->min_interval = 1000000;
    ci->inset = 10;     /* Percent */

    while ((c = getopt(argc, argv, "w:i:dh:s:v:zl:t:D:")) > 0) {
        switch (c) {
            case 'h':
                dorange(optarg, &ci->dark.h, &ci->bright.h, 360);
                break;
            case 's':
                dorange(optarg, &ci->dark.s, &ci->bright.s, 255);
                break;
            case 'v':
                dorange(optarg, &ci->dark.v, &ci->bright.v, 255);
                break;
            case 'z':
                ci->zapping = 1;
                break;
            case 'l':
                ci->file_limit = atoi(optarg);
                break;
            case 'i':
                ci->min_interval = 1000000 * atof(optarg);
                break;
            case 't':
                ci->threshold = atof(optarg) * 1000;
                if (ci->threshold > 1000 || ci->threshold < 0) {
                    fprintf(stderr, "Invalid threshold value '%s' (range is 0-1)\n", optarg);
                    return -1;
                }
                break;
            case 'w':
                ci->min_width = atoi(optarg);
                break;
            case 'd':
                ci->debug++;
                break;
            case 'D':
                ci->dir = av_strdup(optarg);
                break;
            default:
                fprintf(stderr, "Unrecognized argument '%s'\n", argv[optind]);
                return -1;
        }
    }

    fprintf(stderr, "Fish detector configured:\n");
    fprintf(stderr, "    HSV range: %d,%d,%d - %d,%d,%d\n",
                        ci->dark.h,
                        ci->dark.s,
                        ci->dark.v,
                        ci->bright.h,
                        ci->bright.s,
                        ci->bright.v);
    fprintf(stderr, "    Threshold is %d%% pixels\n", ci->threshold / 10);


    return 0;
}

static void get_hsv(HSV *hsv, int r, int g, int b)
{
    int i, v, x, f;
         
    x = (r < g) ? r : g;
    if (b < x)
        x = b;
    v = (r > g) ? r : g;
    if (b > v)
        v = b;
          
    if (v == x) {
        hsv->h = 0;
        hsv->s = 0;
        hsv->v = v;
        return;
    }
       
    if (r == v) {
        f = g - b;
        i = 0;
    } else if (g == v) {
        f = b - r;
        i = 2 * 60;
    } else {
        f = r - g;
        i = 4 * 60;
    }
        
    hsv->h = i + (60 * f) / (v - x);
    if (hsv->h < 0)
        hsv->h += 360;

    hsv->s = (255 * (v - x)) / v;
    hsv->v = v;
         
    return;
}                                                                               

void Process(void *ctx, AVPicture *picture, enum PixelFormat pix_fmt, int width, int height, int64_t pts)
{
    ContextInfo *ci = (ContextInfo *) ctx;
    uint8_t *cm = cropTbl + MAX_NEG_CROP;                                         
    int rowsize = picture->linesize[0];

#if 0
    printf("pix_fmt = %d, width = %d, pts = %lld, ci->next_pts = %lld\n",
        pix_fmt, width, pts, ci->next_pts);
#endif

    if (pts < ci->next_pts)
        return;

    if (width < ci->min_width)
        return;

    ci->next_pts = pts + 1000000;    

    if (pix_fmt == PIX_FMT_YUV420P) {
        uint8_t *y, *u, *v;
        int width2 = width >> 1;
        int inrange = 0;
        int pixcnt;
        int h;
        int h_start, h_end;
        int w_start, w_end;

        h_end = 2 * ((ci->inset * height) / 200);
        h_start = height - h_end;

        w_end = (ci->inset * width2) / 100;
        w_start = width2 - w_end;

        pixcnt = ((h_start - h_end) >> 1) * (w_start - w_end);

        y = picture->data[0] + h_end * picture->linesize[0] + w_end * 2;
        u = picture->data[1] + h_end * picture->linesize[1] / 2 + w_end;
        v = picture->data[2] + h_end * picture->linesize[2] / 2 + w_end;

        for (h = h_start; h > h_end; h -= 2) {
            int w;

            for (w = w_start; w > w_end; w--) {
                unsigned int r,g,b;
                HSV hsv;
                int cb, cr, yt, r_add, g_add, b_add;

                YUV_TO_RGB1_CCIR(u[0], v[0]);
                YUV_TO_RGB2_CCIR(r, g, b, y[0]);

                get_hsv(&hsv, r, g, b);

                if (ci->debug > 1) 
                    fprintf(stderr, "(%d,%d,%d) -> (%d,%d,%d)\n",
                        r,g,b,hsv.h,hsv.s,hsv.v);


                if (hsv.h >= ci->dark.h && hsv.h <= ci->bright.h &&
                    hsv.s >= ci->dark.s && hsv.s <= ci->bright.s &&
                    hsv.v >= ci->dark.v && hsv.v <= ci->bright.v) {            
                    inrange++;
                } else if (ci->zapping) {
                    y[0] = y[1] = y[rowsize] = y[rowsize + 1] = 16;
                    u[0] = 128;
                    v[0] = 128;
                }

                y+= 2;
                u++;
                v++;
            }

            y += picture->linesize[0] * 2 - (w_start - w_end) * 2;
            u += picture->linesize[1] - (w_start - w_end);
            v += picture->linesize[2] - (w_start - w_end);
        }

        if (ci->debug) 
            fprintf(stderr, "Fish: Inrange=%d of %d = %d threshold\n", inrange, pixcnt, 1000 * inrange / pixcnt);

        if (inrange * 1000 / pixcnt >= ci->threshold) {
            /* Save to file */
            int size;
            char *buf;
            AVPicture picture1;
            static int frame_counter;
            static int foundfile;

            if ((frame_counter++ % 20) == 0) {
                /* Check how many files we have */
                DIR *d;

                foundfile = 0;

                d = opendir(ci->dir);
                if (d) {
                    struct dirent *dent;

                    while ((dent = readdir(d))) {
                        if (strncmp("fishimg", dent->d_name, 7) == 0) {
                            if (strcmp(".ppm", dent->d_name + strlen(dent->d_name) - 4) == 0) {
                                foundfile++;
                            }
                        }
                    }
                    closedir(d);
                }
            }

            if (foundfile < ci->file_limit) {
                size = avpicture_get_size(PIX_FMT_RGB24, width, height);
                buf = av_malloc(size);

                avpicture_fill(&picture1, buf, PIX_FMT_RGB24, width, height);
                if (img_convert(&picture1, PIX_FMT_RGB24, 
                                picture, pix_fmt, width, height) >= 0) {
                    /* Write out the PPM file */

                    FILE *f;
                    char fname[256];

                    sprintf(fname, "%s/fishimg%ld_%lld.ppm", ci->dir, time(0), pts);
                    f = fopen(fname, "w");
                    if (f) {
                        fprintf(f, "P6 %d %d 255\n", width, height);
                        fwrite(buf, width * height * 3, 1, f);
                        fclose(f);
                    }
                }

                av_free(buf);
                ci->next_pts = pts + ci->min_interval;    
            }
        }
    }
}
Commit	Line	Data
26b4bb70 PG	1	/*
	2	* Fish Detector Hook
	3	* Copyright (c) 2002 Philip Gladstone
	4	*
	5	* This file implements a fish detector. It is used to see when a
	6	* goldfish passes in front of the camera. It does this by counting
	7	* the number of input pixels that fall within a particular HSV
	8	* range.
	9	*
	10	* It takes a multitude of arguments:
	11	*
	12	* -h <num>-<num> the range of H values that are fish
	13	* -s <num>-<num> the range of S values that are fish
	14	* -v <num>-<num> the range of V values that are fish
	15	* -z zap all non-fish values to black
	16	* -l <num> limit the number of saved files to <num>
	17	* -i <num> only check frames every <num> seconds
	18	* -t <num> the threshold for the amount of fish pixels (range 0-1)
	19	* -d turn debugging on
	20	* -D <directory> where to put the fish images
	21	*
	22	* This library is free software; you can redistribute it and/or
	23	* modify it under the terms of the GNU Lesser General Public
	24	* License as published by the Free Software Foundation; either
	25	* version 2 of the License, or (at your option) any later version.
	26	*
	27	* This library is distributed in the hope that it will be useful,
	28	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	29	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	30	* Lesser General Public License for more details.
	31	*
	32	* You should have received a copy of the GNU Lesser General Public
	33	* License along with this library; if not, write to the Free Software
	34	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	35	*/
	36	#include <stdlib.h>
	37	#include <fcntl.h>
47930f09	38	#include <unistd.h>
26b4bb70 PG	39	#include <stdarg.h>
26b4bb70 PG	40	#include <string.h>
b55e4ef4	41	#include <time.h>
26b4bb70 PG	42	#include <stdio.h>
	43	#include <dirent.h>
	44
	45	#include "framehook.h"
	46	#include "dsputil.h"
	47
25a2ee7d PG	48	#define SCALEBITS 10
	49	#define ONE_HALF (1 << (SCALEBITS - 1))
	50	#define FIX(x) ((int) ((x) * (1<<SCALEBITS) + 0.5))
	51
	52	#define YUV_TO_RGB1_CCIR(cb1, cr1)\
	53	{\
	54	cb = (cb1) - 128;\
	55	cr = (cr1) - 128;\
	56	r_add = FIX(1.40200255.0/224.0) cr + ONE_HALF;\
	57	g_add = - FIX(0.34414255.0/224.0) cb - FIX(0.71414255.0/224.0) cr + \
	58	ONE_HALF;\
	59	b_add = FIX(1.77200255.0/224.0) cb + ONE_HALF;\
	60	}
	61
	62	#define YUV_TO_RGB2_CCIR(r, g, b, y1)\
	63	{\
	64	yt = ((y1) - 16) * FIX(255.0/219.0);\
	65	r = cm[(yt + r_add) >> SCALEBITS];\
	66	g = cm[(yt + g_add) >> SCALEBITS];\
	67	b = cm[(yt + b_add) >> SCALEBITS];\
	68	}
	69
26b4bb70	70
25a2ee7d	71
26b4bb70 PG	72
	73	typedef struct {
	74	int h; /* 0 .. 360 */
	75	int s; /* 0 .. 255 */
	76	int v; /* 0 .. 255 */
	77	} HSV;
	78
	79	typedef struct {
	80	int zapping;
	81	int threshold;
	82	HSV dark, bright;
	83	char *dir;
	84	int file_limit;
	85	int debug;
	86	int min_interval;
0c1a9eda	87	int64_t next_pts;
26b4bb70 PG	88	int inset;
	89	int min_width;
	90	} ContextInfo;
	91
	92	static void dorange(const char s, int first, int *second, int maxval)
	93	{
	94	sscanf(s, "%d-%d", first, second);
	95	if (*first > maxval)
	96	*first = maxval;
	97	if (*second > maxval)
	98	*second = maxval;
	99	}
	100
6c11d48c PG	101	void Release(void *ctx)
	102	{
	103	if (ctx)
	104	av_free(ctx);
	105	}
26b4bb70 PG	106
	107	int Configure(void *ctxp, int argc, char argv[])
	108	{
	109	ContextInfo *ci;
	110	int c;
	111
	112	*ctxp = av_mallocz(sizeof(ContextInfo));
	113	ci = (ContextInfo ) ctxp;
	114
	115	optind = 0;
	116
	117	ci->dir = "/tmp";
d9974a48	118	ci->threshold = 100;
26b4bb70 PG	119	ci->file_limit = 100;
	120	ci->min_interval = 1000000;
	121	ci->inset = 10; /* Percent */
	122
	123	while ((c = getopt(argc, argv, "w:i:dh:s:v:zl:t:D:")) > 0) {
	124	switch (c) {
	125	case 'h':
	126	dorange(optarg, &ci->dark.h, &ci->bright.h, 360);
	127	break;
	128	case 's':
	129	dorange(optarg, &ci->dark.s, &ci->bright.s, 255);
	130	break;
	131	case 'v':
	132	dorange(optarg, &ci->dark.v, &ci->bright.v, 255);
	133	break;
	134	case 'z':
	135	ci->zapping = 1;
	136	break;
	137	case 'l':
	138	ci->file_limit = atoi(optarg);
	139	break;
	140	case 'i':
	141	ci->min_interval = 1000000 * atof(optarg);
	142	break;
	143	case 't':
	144	ci->threshold = atof(optarg) * 1000;
d9974a48 PG	145	if (ci->threshold > 1000 \|\| ci->threshold < 0) {
	146	fprintf(stderr, "Invalid threshold value '%s' (range is 0-1)\n", optarg);
	147	return -1;
	148	}
26b4bb70 PG	149	break;
	150	case 'w':
	151	ci->min_width = atoi(optarg);
	152	break;
	153	case 'd':
	154	ci->debug++;
	155	break;
	156	case 'D':
e9a9e0c2	157	ci->dir = av_strdup(optarg);
26b4bb70 PG	158	break;
	159	default:
	160	fprintf(stderr, "Unrecognized argument '%s'\n", argv[optind]);
	161	return -1;
	162	}
	163	}
	164
	165	fprintf(stderr, "Fish detector configured:\n");
	166	fprintf(stderr, " HSV range: %d,%d,%d - %d,%d,%d\n",
	167	ci->dark.h,
	168	ci->dark.s,
	169	ci->dark.v,
	170	ci->bright.h,
	171	ci->bright.s,
	172	ci->bright.v);
25a2ee7d PG	173	fprintf(stderr, " Threshold is %d%% pixels\n", ci->threshold / 10);
25a2ee7d PG	174
26b4bb70 PG	175
	176	return 0;
	177	}
	178
	179	static void get_hsv(HSV *hsv, int r, int g, int b)
	180	{
	181	int i, v, x, f;
	182
	183	x = (r < g) ? r : g;
	184	if (b < x)
	185	x = b;
	186	v = (r > g) ? r : g;
	187	if (b > v)
	188	v = b;
	189
	190	if (v == x) {
	191	hsv->h = 0;
	192	hsv->s = 0;
	193	hsv->v = v;
	194	return;
	195	}
	196
	197	if (r == v) {
	198	f = g - b;
	199	i = 0;
	200	} else if (g == v) {
	201	f = b - r;
	202	i = 2 * 60;
	203	} else {
	204	f = r - g;
	205	i = 4 * 60;
	206	}
	207
	208	hsv->h = i + (60 * f) / (v - x);
	209	if (hsv->h < 0)
	210	hsv->h += 360;
	211
	212	hsv->s = (255 * (v - x)) / v;
	213	hsv->v = v;
	214
	215	return;
	216	}
	217
0c1a9eda	218	void Process(void ctx, AVPicture picture, enum PixelFormat pix_fmt, int width, int height, int64_t pts)
26b4bb70 PG	219	{
26b4bb70 PG	220	ContextInfo ci = (ContextInfo ) ctx;
0c1a9eda	221	uint8_t *cm = cropTbl + MAX_NEG_CROP;
26b4bb70 PG	222	int rowsize = picture->linesize[0];
26b4bb70 PG	223
d9974a48 PG	224	#if 0
	225	printf("pix_fmt = %d, width = %d, pts = %lld, ci->next_pts = %lld\n",
	226	pix_fmt, width, pts, ci->next_pts);
	227	#endif
	228
26b4bb70 PG	229	if (pts < ci->next_pts)
	230	return;
	231
	232	if (width < ci->min_width)
	233	return;
	234
	235	ci->next_pts = pts + 1000000;
	236
	237	if (pix_fmt == PIX_FMT_YUV420P) {
0c1a9eda	238	uint8_t y, u, *v;
26b4bb70 PG	239	int width2 = width >> 1;
	240	int inrange = 0;
	241	int pixcnt;
	242	int h;
	243	int h_start, h_end;
	244	int w_start, w_end;
	245
	246	h_end = 2 * ((ci->inset * height) / 200);
	247	h_start = height - h_end;
	248
	249	w_end = (ci->inset * width2) / 100;
	250	w_start = width2 - w_end;
	251
	252	pixcnt = ((h_start - h_end) >> 1) * (w_start - w_end);
	253
d9974a48	254	y = picture->data[0] + h_end * picture->linesize[0] + w_end * 2;
25a2ee7d PG	255	u = picture->data[1] + h_end * picture->linesize[1] / 2 + w_end;
25a2ee7d PG	256	v = picture->data[2] + h_end * picture->linesize[2] / 2 + w_end;
26b4bb70 PG	257
	258	for (h = h_start; h > h_end; h -= 2) {
	259	int w;
	260
	261	for (w = w_start; w > w_end; w--) {
25a2ee7d	262	unsigned int r,g,b;
26b4bb70	263	HSV hsv;
25a2ee7d	264	int cb, cr, yt, r_add, g_add, b_add;
26b4bb70	265
25a2ee7d PG	266	YUV_TO_RGB1_CCIR(u[0], v[0]);
25a2ee7d PG	267	YUV_TO_RGB2_CCIR(r, g, b, y[0]);
26b4bb70 PG	268
	269	get_hsv(&hsv, r, g, b);
	270
	271	if (ci->debug > 1)
	272	fprintf(stderr, "(%d,%d,%d) -> (%d,%d,%d)\n",
	273	r,g,b,hsv.h,hsv.s,hsv.v);
	274
	275
	276	if (hsv.h >= ci->dark.h && hsv.h <= ci->bright.h &&
	277	hsv.s >= ci->dark.s && hsv.s <= ci->bright.s &&
	278	hsv.v >= ci->dark.v && hsv.v <= ci->bright.v) {
	279	inrange++;
	280	} else if (ci->zapping) {
25a2ee7d PG	281	y[0] = y[1] = y[rowsize] = y[rowsize + 1] = 16;
	282	u[0] = 128;
	283	v[0] = 128;
26b4bb70 PG	284	}
	285
	286	y+= 2;
	287	u++;
	288	v++;
	289	}
	290
d9974a48 PG	291	y += picture->linesize[0] * 2 - (w_start - w_end) * 2;
	292	u += picture->linesize[1] - (w_start - w_end);
	293	v += picture->linesize[2] - (w_start - w_end);
26b4bb70 PG	294	}
26b4bb70 PG	295
d9974a48 PG	296	if (ci->debug)
	297	fprintf(stderr, "Fish: Inrange=%d of %d = %d threshold\n", inrange, pixcnt, 1000 * inrange / pixcnt);
	298
26b4bb70 PG	299	if (inrange * 1000 / pixcnt >= ci->threshold) {
	300	/* Save to file */
	301	int size;
	302	char *buf;
	303	AVPicture picture1;
	304	static int frame_counter;
	305	static int foundfile;
	306
26b4bb70 PG	307	if ((frame_counter++ % 20) == 0) {
	308	/* Check how many files we have */
	309	DIR *d;
	310
	311	foundfile = 0;
	312
	313	d = opendir(ci->dir);
	314	if (d) {
	315	struct dirent *dent;
	316
	317	while ((dent = readdir(d))) {
	318	if (strncmp("fishimg", dent->d_name, 7) == 0) {
	319	if (strcmp(".ppm", dent->d_name + strlen(dent->d_name) - 4) == 0) {
	320	foundfile++;
	321	}
	322	}
	323	}
	324	closedir(d);
	325	}
	326	}
	327
	328	if (foundfile < ci->file_limit) {
	329	size = avpicture_get_size(PIX_FMT_RGB24, width, height);
	330	buf = av_malloc(size);
	331
	332	avpicture_fill(&picture1, buf, PIX_FMT_RGB24, width, height);
	333	if (img_convert(&picture1, PIX_FMT_RGB24,
	334	picture, pix_fmt, width, height) >= 0) {
	335	/* Write out the PPM file */
	336
	337	FILE *f;
	338	char fname[256];
	339
	340	sprintf(fname, "%s/fishimg%ld_%lld.ppm", ci->dir, time(0), pts);
	341	f = fopen(fname, "w");
	342	if (f) {
	343	fprintf(f, "P6 %d %d 255\n", width, height);
	344	fwrite(buf, width * height * 3, 1, f);
	345	fclose(f);
	346	}
	347	}
	348
	349	av_free(buf);
	350	ci->next_pts = pts + ci->min_interval;
	351	}
	352	}
	353	}
	354	}
	355