2002-11-21 05:50:36 +02:00
|
|
|
/*
|
|
|
|
* 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 <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;
|
|
|
|
|
2002-11-30 19:17:58 +02:00
|
|
|
void Release(void *ctx)
|
|
|
|
{
|
|
|
|
ContextInfo *ci;
|
|
|
|
ci = (ContextInfo *) ctx;
|
|
|
|
|
|
|
|
if (ci->cache) {
|
|
|
|
imlib_context_set_image(ci->cache->image);
|
|
|
|
imlib_free_image();
|
|
|
|
av_free(ci->cache);
|
|
|
|
}
|
|
|
|
if (ctx)
|
|
|
|
av_free(ctx);
|
|
|
|
}
|
2002-11-21 05:50:36 +02:00
|
|
|
|
|
|
|
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:
|
|
|
|
;
|
|
|
|
}
|
|
|
|
|