mirror of https://git.ffmpeg.org/ffmpeg.git
Added three sample video hooks. See the (rudimentary) documentation on what
they do and their capabilities. Originally committed as revision 1265 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Philip Gladstone
parent
65e70450de
commit
26b4bb70c2
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@ -0,0 +1,27 @@
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include ../config.mak
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CFLAGS=-fPIC $(OPTFLAGS) -g -Wall -I.. -I../libav -I../libavcodec -DHAVE_AV_CONFIG_H
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HOOKS=null.so fish.so
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ifeq ($(HAVE_IMLIB2),yes)
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HOOKS += imlib2.so
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endif
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all: $(HOOKS) hooks.html
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install:
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install -s -m 755 $(HOOKS) $(INSTDIR)
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imlib2.so: imlib2.o
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$(CC) -g -o $@ -shared $< -lImlib2
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rm $<
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%.so: %.o
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$(CC) -g -o $@ -shared $<
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%.html: %.texi
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texi2html -monolithic -number $<
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clean:
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rm -f *.o *.so *~
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@ -0,0 +1,330 @@
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/*
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* Fish Detector Hook
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* Copyright (c) 2002 Philip Gladstone
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*
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* This file implements a fish detector. It is used to see when a
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* goldfish passes in front of the camera. It does this by counting
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* the number of input pixels that fall within a particular HSV
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* range.
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*
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* It takes a multitude of arguments:
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*
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* -h <num>-<num> the range of H values that are fish
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* -s <num>-<num> the range of S values that are fish
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* -v <num>-<num> the range of V values that are fish
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* -z zap all non-fish values to black
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* -l <num> limit the number of saved files to <num>
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* -i <num> only check frames every <num> seconds
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* -t <num> the threshold for the amount of fish pixels (range 0-1)
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* -d turn debugging on
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* -D <directory> where to put the fish images
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdlib.h>
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#include <fcntl.h>
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#include <getopt.h>
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#include <stdarg.h>
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#include <string.h>
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#include <sys/time.h>
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#include <stdio.h>
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#include <dirent.h>
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#include "framehook.h"
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#include "dsputil.h"
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#define SCALE_BITS 10
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#define C_Y (76309 >> (16 - SCALE_BITS))
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#define C_RV (117504 >> (16 - SCALE_BITS))
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#define C_BU (138453 >> (16 - SCALE_BITS))
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#define C_GU (13954 >> (16 - SCALE_BITS))
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#define C_GV (34903 >> (16 - SCALE_BITS))
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typedef struct {
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int h; /* 0 .. 360 */
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int s; /* 0 .. 255 */
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int v; /* 0 .. 255 */
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} HSV;
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typedef struct {
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int zapping;
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int threshold;
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HSV dark, bright;
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char *dir;
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int file_limit;
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int debug;
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int min_interval;
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INT64 next_pts;
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int inset;
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int min_width;
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} ContextInfo;
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static void dorange(const char *s, int *first, int *second, int maxval)
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{
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sscanf(s, "%d-%d", first, second);
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if (*first > maxval)
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*first = maxval;
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if (*second > maxval)
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*second = maxval;
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}
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int Configure(void **ctxp, int argc, char *argv[])
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{
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ContextInfo *ci;
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int c;
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*ctxp = av_mallocz(sizeof(ContextInfo));
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ci = (ContextInfo *) *ctxp;
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optind = 0;
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ci->dir = "/tmp";
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ci->threshold = 1000;
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ci->file_limit = 100;
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ci->min_interval = 1000000;
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ci->inset = 10; /* Percent */
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while ((c = getopt(argc, argv, "w:i:dh:s:v:zl:t:D:")) > 0) {
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switch (c) {
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case 'h':
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dorange(optarg, &ci->dark.h, &ci->bright.h, 360);
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break;
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case 's':
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dorange(optarg, &ci->dark.s, &ci->bright.s, 255);
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break;
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case 'v':
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dorange(optarg, &ci->dark.v, &ci->bright.v, 255);
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break;
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case 'z':
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ci->zapping = 1;
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break;
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case 'l':
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ci->file_limit = atoi(optarg);
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break;
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case 'i':
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ci->min_interval = 1000000 * atof(optarg);
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break;
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case 't':
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ci->threshold = atof(optarg) * 1000;
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break;
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case 'w':
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ci->min_width = atoi(optarg);
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break;
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case 'd':
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ci->debug++;
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break;
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case 'D':
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ci->dir = strdup(optarg);
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break;
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default:
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fprintf(stderr, "Unrecognized argument '%s'\n", argv[optind]);
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return -1;
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}
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}
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fprintf(stderr, "Fish detector configured:\n");
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fprintf(stderr, " HSV range: %d,%d,%d - %d,%d,%d\n",
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ci->dark.h,
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ci->dark.s,
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ci->dark.v,
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ci->bright.h,
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ci->bright.s,
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ci->bright.v);
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return 0;
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}
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static void get_hsv(HSV *hsv, int r, int g, int b)
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{
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int i, v, x, f;
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x = (r < g) ? r : g;
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if (b < x)
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x = b;
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v = (r > g) ? r : g;
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if (b > v)
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v = b;
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if (v == x) {
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hsv->h = 0;
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hsv->s = 0;
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hsv->v = v;
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return;
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}
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if (r == v) {
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f = g - b;
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i = 0;
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} else if (g == v) {
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f = b - r;
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i = 2 * 60;
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} else {
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f = r - g;
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i = 4 * 60;
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}
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hsv->h = i + (60 * f) / (v - x);
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if (hsv->h < 0)
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hsv->h += 360;
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hsv->s = (255 * (v - x)) / v;
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hsv->v = v;
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return;
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}
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void Process(void *ctx, AVPicture *picture, enum PixelFormat pix_fmt, int width, int height, INT64 pts)
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{
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ContextInfo *ci = (ContextInfo *) ctx;
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UINT8 *cm = cropTbl + MAX_NEG_CROP;
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int rowsize = picture->linesize[0];
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if (pts < ci->next_pts)
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return;
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if (width < ci->min_width)
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return;
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ci->next_pts = pts + 1000000;
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if (pix_fmt == PIX_FMT_YUV420P) {
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UINT8 *y, *u, *v;
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int width2 = width >> 1;
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int inrange = 0;
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int pixcnt;
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int h;
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int h_start, h_end;
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int w_start, w_end;
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h_end = 2 * ((ci->inset * height) / 200);
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h_start = height - h_end;
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w_end = (ci->inset * width2) / 100;
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w_start = width2 - w_end;
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pixcnt = ((h_start - h_end) >> 1) * (w_start - w_end);
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y = picture->data[0];
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u = picture->data[1];
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v = picture->data[2];
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for (h = h_start; h > h_end; h -= 2) {
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int w;
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for (w = w_start; w > w_end; w--) {
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int r,g,b;
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int Y, U, V;
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HSV hsv;
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U = u[0] - 128;
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V = v[0] - 128;
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Y = (y[0] - 16) * C_Y;
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r = cm[(Y + C_RV * V + (1 << (SCALE_BITS - 1))) >> SCALE_BITS];
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g = cm[(Y + - C_GU * U - C_GV * V + (1 << (SCALE_BITS - 1))) >> SCALE_BITS];
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b = cm[(Y + C_BU * U + (1 << (SCALE_BITS - 1))) >> SCALE_BITS];
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get_hsv(&hsv, r, g, b);
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if (ci->debug > 1)
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fprintf(stderr, "(%d,%d,%d) -> (%d,%d,%d)\n",
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r,g,b,hsv.h,hsv.s,hsv.v);
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if (hsv.h >= ci->dark.h && hsv.h <= ci->bright.h &&
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hsv.s >= ci->dark.s && hsv.s <= ci->bright.s &&
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hsv.v >= ci->dark.v && hsv.v <= ci->bright.v) {
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inrange++;
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} else if (ci->zapping) {
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y[0] = y[1] = y[rowsize] = y[rowsize + 1] = 0;
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}
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y+= 2;
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u++;
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v++;
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}
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y += picture->linesize[0] * 2 - width;
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u += picture->linesize[1] - width2;
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v += picture->linesize[2] - width2;
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}
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if (inrange * 1000 / pixcnt >= ci->threshold) {
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/* Save to file */
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int size;
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char *buf;
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AVPicture picture1;
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static int frame_counter;
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static int foundfile;
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if (ci->debug)
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fprintf(stderr, "Fish: Inrange=%d of %d = %d threshold\n", inrange, pixcnt, 1000 * inrange / pixcnt);
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if ((frame_counter++ % 20) == 0) {
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/* Check how many files we have */
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DIR *d;
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foundfile = 0;
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d = opendir(ci->dir);
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if (d) {
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struct dirent *dent;
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while ((dent = readdir(d))) {
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if (strncmp("fishimg", dent->d_name, 7) == 0) {
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if (strcmp(".ppm", dent->d_name + strlen(dent->d_name) - 4) == 0) {
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foundfile++;
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}
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}
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}
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closedir(d);
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}
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}
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if (foundfile < ci->file_limit) {
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size = avpicture_get_size(PIX_FMT_RGB24, width, height);
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buf = av_malloc(size);
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avpicture_fill(&picture1, buf, PIX_FMT_RGB24, width, height);
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if (img_convert(&picture1, PIX_FMT_RGB24,
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picture, pix_fmt, width, height) >= 0) {
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/* Write out the PPM file */
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FILE *f;
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char fname[256];
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sprintf(fname, "%s/fishimg%ld_%lld.ppm", ci->dir, time(0), pts);
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f = fopen(fname, "w");
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if (f) {
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fprintf(f, "P6 %d %d 255\n", width, height);
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fwrite(buf, width * height * 3, 1, f);
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fclose(f);
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}
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}
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av_free(buf);
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ci->next_pts = pts + ci->min_interval;
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}
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}
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}
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}
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/* To ensure correct typing */
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FrameHookConfigureFn ConfigureFn = Configure;
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FrameHookProcessFn ProcessFn = Process;
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@ -0,0 +1,95 @@
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<HTML>
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<HEAD>
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<!-- This HTML file has been created by texi2html 1.51
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||||
from hooks.texi on 20 November 2002 -->
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<TITLE>Video Hook Documentation</TITLE>
|
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</HEAD>
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<BODY>
|
||||
<H1>Video Hook Documentation</H1>
|
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<P>
|
||||
<P><HR><P>
|
||||
<H1>Table of Contents</H1>
|
||||
<UL>
|
||||
<LI><A NAME="TOC1" HREF="hooks.html#SEC1">1 Introduction</A>
|
||||
<UL>
|
||||
<LI><A NAME="TOC2" HREF="hooks.html#SEC2">1.1 null.c</A>
|
||||
<LI><A NAME="TOC3" HREF="hooks.html#SEC3">1.2 fish.c</A>
|
||||
<LI><A NAME="TOC4" HREF="hooks.html#SEC4">1.3 imlib2.c</A>
|
||||
</UL>
|
||||
</UL>
|
||||
<P><HR><P>
|
||||
|
||||
<P>
|
||||
Video Hook Documentation
|
||||
<P>
|
||||
|
||||
</P>
|
||||
|
||||
|
||||
|
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<H1><A NAME="SEC1" HREF="hooks.html#TOC1">1 Introduction</A></H1>
|
||||
|
||||
<P>
|
||||
The video hook functionality is designed (mostly) for live video. It allows
|
||||
the video to be modified or examined between the decoder and the encoder.
|
||||
|
||||
</P>
|
||||
<P>
|
||||
Any number of hook modules can be placed inline, and they are run in the
|
||||
order that they were specified on the ffmpeg command line.
|
||||
|
||||
</P>
|
||||
<P>
|
||||
Three modules are provided and are described below. They are all intended to
|
||||
be used as a base for your own modules.
|
||||
|
||||
</P>
|
||||
<P>
|
||||
Modules are loaded using the -vhook option to ffmpeg. The value of this parameter
|
||||
is a space seperated list of arguments. The first is the module name, and the rest
|
||||
are passed as arguments to the Configure function of the module.
|
||||
|
||||
</P>
|
||||
|
||||
|
||||
<H2><A NAME="SEC2" HREF="hooks.html#TOC2">1.1 null.c</A></H2>
|
||||
|
||||
<P>
|
||||
This does nothing. Actually it converts the input image to RGB24 and then converts
|
||||
it back again. This is meant as a sample that you can use to test your setup.
|
||||
|
||||
</P>
|
||||
|
||||
|
||||
<H2><A NAME="SEC3" HREF="hooks.html#TOC3">1.2 fish.c</A></H2>
|
||||
|
||||
<P>
|
||||
This implements a 'fish detector'. Essentially it converts the image into HSV
|
||||
space and tests whether more than a certain percentage of the pixels fall into
|
||||
a specific HSV cuboid. If so, then the image is saved into a file for processing
|
||||
by other bits of code.
|
||||
|
||||
</P>
|
||||
<P>
|
||||
Why use HSV? It turns out that HSV cuboids represent a more compact range of
|
||||
colors than would an RGB cuboid.
|
||||
|
||||
</P>
|
||||
|
||||
|
||||
<H2><A NAME="SEC4" HREF="hooks.html#TOC4">1.3 imlib2.c</A></H2>
|
||||
|
||||
<P>
|
||||
This allows a caption to be placed onto each frame. It supports inserting the
|
||||
time and date. By using the imlib functions, it would be easy to add your own
|
||||
graphical logo, add a frame/border, etc.
|
||||
|
||||
</P>
|
||||
|
||||
<P><HR><P>
|
||||
This document was generated on 20 November 2002 using the
|
||||
<A HREF="http://wwwcn.cern.ch/dci/texi2html/">texi2html</A>
|
||||
translator version 1.51.</P>
|
||||
</BODY>
|
||||
</HTML>
|
||||
|
|
@ -0,0 +1,49 @@
|
|||
\input texinfo @c -*- texinfo -*-
|
||||
|
||||
@settitle Video Hook Documentation
|
||||
@titlepage
|
||||
@sp 7
|
||||
@center @titlefont{Video Hook Documentation}
|
||||
@sp 3
|
||||
@end titlepage
|
||||
|
||||
|
||||
@chapter Introduction
|
||||
|
||||
|
||||
The video hook functionality is designed (mostly) for live video. It allows
|
||||
the video to be modified or examined between the decoder and the encoder.
|
||||
|
||||
Any number of hook modules can be placed inline, and they are run in the
|
||||
order that they were specified on the ffmpeg command line.
|
||||
|
||||
Three modules are provided and are described below. They are all intended to
|
||||
be used as a base for your own modules.
|
||||
|
||||
Modules are loaded using the -vhook option to ffmpeg. The value of this parameter
|
||||
is a space seperated list of arguments. The first is the module name, and the rest
|
||||
are passed as arguments to the Configure function of the module.
|
||||
|
||||
@section null.c
|
||||
|
||||
This does nothing. Actually it converts the input image to RGB24 and then converts
|
||||
it back again. This is meant as a sample that you can use to test your setup.
|
||||
|
||||
@section fish.c
|
||||
|
||||
This implements a 'fish detector'. Essentially it converts the image into HSV
|
||||
space and tests whether more than a certain percentage of the pixels fall into
|
||||
a specific HSV cuboid. If so, then the image is saved into a file for processing
|
||||
by other bits of code.
|
||||
|
||||
Why use HSV? It turns out that HSV cuboids represent a more compact range of
|
||||
colors than would an RGB cuboid.
|
||||
|
||||
@section imlib2.c
|
||||
|
||||
This allows a caption to be placed onto each frame. It supports inserting the
|
||||
time and date. By using the imlib functions, it would be easy to add your own
|
||||
graphical logo, add a frame/border, etc.
|
||||
|
||||
|
||||
@bye
|
||||
|
|
@ -0,0 +1,267 @@
|
|||
/*
|
||||
* imlib2 based hook
|
||||
* Copyright (c) 2002 Philip Gladstone
|
||||
*
|
||||
* This module implements a text overlay for a video image. Currently it
|
||||
* supports a fixed overlay or reading the text from a file. The string
|
||||
* is passed through strftime so that it is easy to imprint the date and
|
||||
* time onto the image.
|
||||
*
|
||||
* Options:
|
||||
*
|
||||
* -c <color> The color of the text
|
||||
* -F <fontname> The font face and size
|
||||
* -t <text> The text
|
||||
* -f <filename> The filename to read text from
|
||||
* -x <num> X coordinate to start text
|
||||
* -y <num> Y coordinate to start text
|
||||
*
|
||||
* This module is very much intended as an example of what could be done.
|
||||
* For example, you could overlay an image (even semi-transparent) like
|
||||
* TV stations do. You can manipulate the image using imlib2 functions
|
||||
* in any way.
|
||||
*
|
||||
* One caution is that this is an expensive process -- in particular the
|
||||
* conversion of the image into RGB and back is time consuming. For some
|
||||
* special cases -- e.g. painting black text -- it would be faster to paint
|
||||
* the text into a bitmap and then combine it directly into the YUV
|
||||
* image. However, this code is fast enough to handle 10 fps of 320x240 on a
|
||||
* 900MHz Duron in maybe 15% of the CPU.
|
||||
*
|
||||
* 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 <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <fcntl.h>
|
||||
#include <getopt.h>
|
||||
#include <stdarg.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
#include <sys/time.h>
|
||||
#include <X11/Xlib.h>
|
||||
#include <Imlib2.h>
|
||||
|
||||
#include "framehook.h"
|
||||
|
||||
typedef struct {
|
||||
int dummy;
|
||||
Imlib_Font fn;
|
||||
char *text;
|
||||
char *file;
|
||||
int r, g, b;
|
||||
int x;
|
||||
int y;
|
||||
struct _CachedImage *cache;
|
||||
} ContextInfo;
|
||||
|
||||
typedef struct _CachedImage {
|
||||
struct _CachedImage *next;
|
||||
Imlib_Image image;
|
||||
int width;
|
||||
int height;
|
||||
} CachedImage;
|
||||
|
||||
|
||||
int Configure(void **ctxp, int argc, char *argv[])
|
||||
{
|
||||
int c;
|
||||
ContextInfo *ci;
|
||||
char *font = "LucidaSansDemiBold/16";
|
||||
char *fp = getenv("FONTPATH");
|
||||
char *color = 0;
|
||||
FILE *f;
|
||||
|
||||
*ctxp = av_mallocz(sizeof(ContextInfo));
|
||||
ci = (ContextInfo *) *ctxp;
|
||||
|
||||
optind = 0;
|
||||
|
||||
if (fp)
|
||||
imlib_add_path_to_font_path(fp);
|
||||
|
||||
while ((c = getopt(argc, argv, "c:f:F:t:x:y:")) > 0) {
|
||||
switch (c) {
|
||||
case 'c':
|
||||
color = optarg;
|
||||
break;
|
||||
case 'F':
|
||||
font = optarg;
|
||||
break;
|
||||
case 't':
|
||||
ci->text = strdup(optarg);
|
||||
break;
|
||||
case 'f':
|
||||
ci->file = strdup(optarg);
|
||||
break;
|
||||
case 'x':
|
||||
ci->x = atoi(optarg);
|
||||
break;
|
||||
case 'y':
|
||||
ci->y = atoi(optarg);
|
||||
break;
|
||||
case '?':
|
||||
fprintf(stderr, "Unrecognized argument '%s'\n", argv[optind]);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
ci->fn = imlib_load_font(font);
|
||||
if (!ci->fn) {
|
||||
fprintf(stderr, "Failed to load font '%s'\n", font);
|
||||
return -1;
|
||||
}
|
||||
imlib_context_set_font(ci->fn);
|
||||
imlib_context_set_direction(IMLIB_TEXT_TO_RIGHT);
|
||||
|
||||
if (color) {
|
||||
char buff[256];
|
||||
int done = 0;
|
||||
|
||||
f = fopen("/usr/lib/X11/rgb.txt", "r");
|
||||
if (!f) {
|
||||
fprintf(stderr, "Failed to find rgb.txt\n");
|
||||
return -1;
|
||||
}
|
||||
while (fgets(buff, sizeof(buff), f)) {
|
||||
int r, g, b;
|
||||
char colname[80];
|
||||
|
||||
if (sscanf(buff, "%d %d %d %64s", &r, &g, &b, colname) == 4 &&
|
||||
strcasecmp(colname, color) == 0) {
|
||||
ci->r = r;
|
||||
ci->g = g;
|
||||
ci->b = b;
|
||||
/* fprintf(stderr, "%s -> %d,%d,%d\n", colname, r, g, b); */
|
||||
done = 1;
|
||||
break;
|
||||
}
|
||||
}
|
||||
fclose(f);
|
||||
if (!done) {
|
||||
fprintf(stderr, "Unable to find color '%s' in rgb.txt\n", color);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
imlib_context_set_color(ci->r, ci->g, ci->b, 255);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static Imlib_Image get_cached_image(ContextInfo *ci, int width, int height)
|
||||
{
|
||||
CachedImage *cache;
|
||||
|
||||
for (cache = ci->cache; cache; cache = cache->next) {
|
||||
if (width == cache->width && height == cache->height)
|
||||
return cache->image;
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static void put_cached_image(ContextInfo *ci, Imlib_Image image, int width, int height)
|
||||
{
|
||||
CachedImage *cache = av_mallocz(sizeof(*cache));
|
||||
|
||||
cache->image = image;
|
||||
cache->width = width;
|
||||
cache->height = height;
|
||||
cache->next = ci->cache;
|
||||
ci->cache = cache;
|
||||
}
|
||||
|
||||
void Process(void *ctx, AVPicture *picture, enum PixelFormat pix_fmt, int width, int height, INT64 pts)
|
||||
{
|
||||
ContextInfo *ci = (ContextInfo *) ctx;
|
||||
AVPicture picture1;
|
||||
Imlib_Image image;
|
||||
DATA32 *data;
|
||||
|
||||
image = get_cached_image(ci, width, height);
|
||||
|
||||
if (!image) {
|
||||
image = imlib_create_image(width, height);
|
||||
put_cached_image(ci, image, width, height);
|
||||
}
|
||||
|
||||
imlib_context_set_image(image);
|
||||
data = imlib_image_get_data();
|
||||
|
||||
if (pix_fmt != PIX_FMT_BGRA32) {
|
||||
avpicture_fill(&picture1, (UINT8 *) data, PIX_FMT_BGRA32, width, height);
|
||||
if (img_convert(&picture1, PIX_FMT_BGRA32,
|
||||
picture, pix_fmt, width, height) < 0) {
|
||||
goto done;
|
||||
}
|
||||
} else {
|
||||
av_abort();
|
||||
}
|
||||
|
||||
imlib_image_set_has_alpha(0);
|
||||
|
||||
{
|
||||
int wid, hig, h_a, v_a;
|
||||
char buff[1000];
|
||||
char tbuff[1000];
|
||||
char *tbp = ci->text;
|
||||
time_t now = time(0);
|
||||
char *p, *q;
|
||||
int x, y;
|
||||
|
||||
if (ci->file) {
|
||||
int fd = open(ci->file, O_RDONLY);
|
||||
|
||||
if (fd < 0) {
|
||||
tbp = "[File not found]";
|
||||
} else {
|
||||
int l = read(fd, tbuff, sizeof(tbuff) - 1);
|
||||
|
||||
if (l >= 0) {
|
||||
tbuff[l] = 0;
|
||||
tbp = tbuff;
|
||||
} else {
|
||||
tbp = "[I/O Error]";
|
||||
}
|
||||
close(fd);
|
||||
}
|
||||
}
|
||||
|
||||
strftime(buff, sizeof(buff), tbp, localtime(&now));
|
||||
|
||||
x = ci->x;
|
||||
y = ci->y;
|
||||
|
||||
for (p = buff; p; p = q) {
|
||||
q = strchr(p, '\n');
|
||||
if (q)
|
||||
*q++ = 0;
|
||||
|
||||
imlib_text_draw_with_return_metrics(x, y, p, &wid, &hig, &h_a, &v_a);
|
||||
y += v_a;
|
||||
}
|
||||
}
|
||||
|
||||
if (pix_fmt != PIX_FMT_BGRA32) {
|
||||
if (img_convert(picture, pix_fmt,
|
||||
&picture1, PIX_FMT_BGRA32, width, height) < 0) {
|
||||
}
|
||||
}
|
||||
|
||||
done:
|
||||
;
|
||||
}
|
||||
|
||||
/* To ensure correct typing */
|
||||
FrameHookConfigureFn ConfigureFn = Configure;
|
||||
FrameHookProcessFn ProcessFn = Process;
|
||||
|
|
@ -0,0 +1,73 @@
|
|||
/*
|
||||
* Null Video Hook
|
||||
* Copyright (c) 2002 Philip Gladstone
|
||||
*
|
||||
* 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 <stdio.h>
|
||||
|
||||
#include "framehook.h"
|
||||
|
||||
typedef struct {
|
||||
int dummy;
|
||||
} ContextInfo;
|
||||
|
||||
|
||||
int Configure(void **ctxp, int argc, char *argv[])
|
||||
{
|
||||
fprintf(stderr, "Called with argc=%d\n", argc);
|
||||
|
||||
*ctxp = av_mallocz(sizeof(ContextInfo));
|
||||
return 0;
|
||||
}
|
||||
|
||||
void Process(void *ctx, AVPicture *picture, enum PixelFormat pix_fmt, int width, int height, INT64 pts)
|
||||
{
|
||||
ContextInfo *ci = (ContextInfo *) ctx;
|
||||
char *buf = 0;
|
||||
AVPicture picture1;
|
||||
AVPicture *pict = picture;
|
||||
|
||||
(void) ci;
|
||||
|
||||
if (pix_fmt != PIX_FMT_RGB24) {
|
||||
int size;
|
||||
|
||||
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) {
|
||||
av_free(buf);
|
||||
return;
|
||||
}
|
||||
pict = &picture1;
|
||||
}
|
||||
|
||||
/* Insert filter code here */
|
||||
|
||||
if (pix_fmt != PIX_FMT_RGB24) {
|
||||
if (img_convert(picture, pix_fmt,
|
||||
&picture1, PIX_FMT_RGB24, width, height) < 0) {
|
||||
}
|
||||
}
|
||||
|
||||
av_free(buf);
|
||||
}
|
||||
|
||||
/* To ensure correct typing */
|
||||
FrameHookConfigureFn ConfigureFn = Configure;
|
||||
FrameHookProcessFn ProcessFn = Process;
|
||||
Loading…
Reference in New Issue