Chiebot-Mirror
/
FFmpeg
mirror of https://github.com/FFmpeg/FFmpeg.git
8
0
Fork 0
Code Issues Projects Releases Wiki Activity

add moving images feature to imlib2 vhook

Browse Source 
Patch by Victor Paesa % wzrlpy A arsystel P com %
Original thread:
Date: Jul 30, 2006 12:28 AM
Subject: [Ffmpeg-devel] [PATCH] Add moving images feature to imlib2 vhook

Originally committed as revision 6929 to svn://svn.ffmpeg.org/ffmpeg/trunk
pull/126/head
Víctor Paesa 18 years ago committed by Guillaume Poirier
parent d904b5fc66
commit 718eeb6a21
1 changed files with 154 additions and 14 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 168
      vhook/imlib2.c

168
vhook/imlib2.c
Unescape View File

@ -7,19 +7,48 @@
* is passed through strftime so that it is easy to imprint the date and
* time onto the image.
*
* You may also overlay an image (even semi-transparent) like TV stations do.
* You may move either the text or the image around your video to create
* scrolling credits, for example.
*
* Text fonts are being looked for in FONTPATH
*
* 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
* -x <expresion> X coordinate of text or image
* -y <expresion> Y coordinate of text or image
* -i <filename> The filename to read a image from
*
* Expresions are functions of:
* N // frame number (starting at zero)
* H // frame height
* W // frame width
* h // image height
* w // image width
* X // previous x
* Y // previous y
*
Examples:
FONTPATH="/cygdrive/c/WINDOWS/Fonts/"
FONTPATH="$FONTPATH:/usr/share/imlib2/data/fonts/"
FONTPATH="$FONTPATH:/usr/X11R6/lib/X11/fonts/TTF/"
export FONTPATH
ffmpeg -i input.avi -vhook \
'vhook/imlib2.dll -x W*(0.5+0.25*sin(N/47*PI))-w/2 -y H*(0.5+0.50*cos(N/97*PI))-h/2 -i /usr/share/imlib2/data/images/bulb.png'
-acodec copy -sameq output.avi
ffmpeg -i input.avi -vhook \
'vhook/imlib2.dll -c red -F Vera.ttf/20 -x 150+0.5*N -y 70+0.25*N -t Hello'
-acodec copy -sameq output.avi
* 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
@ -27,6 +56,23 @@
* 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.
* See further statistics on Pentium4, 3GHz, FFMpeg is SVN-r6798
* Input movie is 20.2 seconds of PAL DV on AVI
* Output movie is DVD compliant VOB.
*
ffmpeg -i input.avi -target pal-dvd out.vob
# 13.516s just transcode
ffmpeg -i input.avi -vhook /usr/local/bin/vhook/null.dll -target pal-dvd out.vob
# 23.546s transcode and img_convert
ffmpeg -i input.avi -vhook \
'vhook/imlib2.dll -c red -F Vera/20 -x 150-0.5*N -y 70+0.25*N -t Hello_person' \
-target pal-dvd out.vob
# 21.454s transcode, img_convert and move text around
ffmpeg -i input.avi -vhook \
'vhook/imlib2.dll -x 150-0.5*N -y 70+0.25*N -i /usr/share/imlib2/data/images/bulb.png' \
-target pal-dvd out.vob
# 20.828s transcode, img_convert and move image around
*
* This file is part of FFmpeg.
*
@ -59,6 +105,20 @@
#include <time.h>
#include <X11/Xlib.h>
#include <Imlib2.h>
#include "eval.h"
const char *const_names[]={
"PI",
"E",
"N", // frame number (starting at zero)
"H", // frame height
"W", // frame width
"h", // image height
"w", // image width
"X", // previous x
"Y", // previous y
NULL
};
static int sws_flags = SWS_BICUBIC;
@ -68,9 +128,14 @@ typedef struct {
char *text;
char *file;
int r, g, b;
int x;
int y;
double x, y;
char *fileImage;
struct _CachedImage *cache;
Imlib_Image imageOverlaid;
AVEvalExpr *eval_x, *eval_y;
char *expr_x, *expr_y;
int frame_number;
int imageOverlaid_width, imageOverlaid_height;
// This vhook first converts frame to RGB ...
struct SwsContext *toRGB_convert_ctx;
@ -96,6 +161,12 @@ void Release(void *ctx)
av_free(ci->cache);
}
if (ctx) {
if (ci->imageOverlaid) {
imlib_context_set_image(ci->imageOverlaid);
imlib_free_image();
}
ff_eval_free(ci->expr_x);
ff_eval_free(ci->expr_y);
sws_freeContext(ci->toRGB_convert_ctx);
sws_freeContext(ci->fromRGB_convert_ctx);
av_free(ctx);
@ -110,16 +181,30 @@ int Configure(void **ctxp, int argc, char *argv[])
char *fp = getenv("FONTPATH");
char *color = 0;
FILE *f;
char *p;
*ctxp = av_mallocz(sizeof(ContextInfo));
ci = (ContextInfo *) *ctxp;
ci->x = 0.0;
ci->y = 0.0;
ci->expr_x = "0.0";
ci->expr_y = "0.0";
optind = 0;
/* Use ':' to split FONTPATH */
if (fp)
while (p = strchr(fp, ':')) {
*p = 0;
imlib_add_path_to_font_path(fp);
fp = p + 1;
}
if ((fp) && (*fp))
imlib_add_path_to_font_path(fp);
while ((c = getopt(argc, argv, "c:f:F:t:x:y:")) > 0) {
while ((c = getopt(argc, argv, "c:f:F:t:x:y:i:")) > 0) {
switch (c) {
case 'c':
color = optarg;
@ -134,10 +219,13 @@ int Configure(void **ctxp, int argc, char *argv[])
ci->file = av_strdup(optarg);
break;
case 'x':
ci->x = atoi(optarg);
ci->expr_x = av_strdup(optarg);
break;
case 'y':
ci->y = atoi(optarg);
ci->expr_y = av_strdup(optarg);
break;
case 'i':
ci->fileImage = av_strdup(optarg);
break;
case '?':
fprintf(stderr, "Unrecognized argument '%s'\n", argv[optind]);
@ -145,6 +233,7 @@ int Configure(void **ctxp, int argc, char *argv[])
}
}
if (ci->text || ci->file) {
ci->fn = imlib_load_font(font);
if (!ci->fn) {
fprintf(stderr, "Failed to load font '%s'\n", font);
@ -152,6 +241,7 @@ int Configure(void **ctxp, int argc, char *argv[])
}
imlib_context_set_font(ci->fn);
imlib_context_set_direction(IMLIB_TEXT_TO_RIGHT);
}
if (color) {
char buff[256];
@ -185,6 +275,29 @@ int Configure(void **ctxp, int argc, char *argv[])
}
}
imlib_context_set_color(ci->r, ci->g, ci->b, 255);
/* load the image (for example, credits for a movie) */
if (ci->fileImage) {
ci->imageOverlaid = imlib_load_image_immediately(ci->fileImage);
if (!(ci->imageOverlaid)){
av_log(NULL, AV_LOG_ERROR, "Couldn't load image '%s'\n", ci->fileImage);
return -1;
}
imlib_context_set_image(ci->imageOverlaid);
ci->imageOverlaid_width = imlib_image_get_width();
ci->imageOverlaid_height = imlib_image_get_height();
}
if (!(ci->eval_x = ff_parse(ci->expr_x, const_names, NULL, NULL, NULL, NULL, NULL))){
av_log(NULL, AV_LOG_ERROR, "Couldn't parse x expression '%s'\n", ci->expr_x);
return -1;
}
if (!(ci->eval_y = ff_parse(ci->expr_y, const_names, NULL, NULL, NULL, NULL, NULL))){
av_log(NULL, AV_LOG_ERROR, "Couldn't parse y expression '%s'\n", ci->expr_y);
return -1;
}
return 0;
}
@ -256,7 +369,20 @@ void Process(void *ctx, AVPicture *picture, enum PixelFormat pix_fmt, int width,
char *tbp = ci->text;
time_t now = time(0);
char *p, *q;
int x, y;
int y;
double const_values[]={
M_PI,
M_E,
ci->frame_number, // frame number (starting at zero)
height, // frame height
width, // frame width
ci->imageOverlaid_height, // image height
ci->imageOverlaid_width, // image width
ci->x, // previous x
ci->y, // previous y
0
};
if (ci->file) {
int fd = open(ci->file, O_RDONLY);
@ -276,19 +402,32 @@ void Process(void *ctx, AVPicture *picture, enum PixelFormat pix_fmt, int width,
}
}
strftime(buff, sizeof(buff), tbp ? tbp : "[No data]", localtime(&now));
if (tbp)
strftime(buff, sizeof(buff), tbp, localtime(&now));
else if (!(ci->imageOverlaid))
strftime(buff, sizeof(buff), "[No data]", localtime(&now));
x = ci->x;
ci->x = ff_parse_eval(ci->eval_x, const_values, ci);
ci->y = ff_parse_eval(ci->eval_y, const_values, ci);
y = ci->y;
if (!(ci->imageOverlaid))
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);
imlib_text_draw_with_return_metrics(ci->x, y, p, &wid, &hig, &h_a, &v_a);
y += v_a;
}
if (ci->imageOverlaid) {
imlib_context_set_image(image);
imlib_blend_image_onto_image(ci->imageOverlaid, 0,
0, 0, ci->imageOverlaid_width, ci->imageOverlaid_height,
ci->x, ci->y, ci->imageOverlaid_width, ci->imageOverlaid_height);
}
}
ci->fromRGB_convert_ctx = sws_getCachedContext(ci->fromRGB_convert_ctx,
@ -306,5 +445,6 @@ void Process(void *ctx, AVPicture *picture, enum PixelFormat pix_fmt, int width,
picture1.data, picture1.linesize, 0, height,
picture->data, picture->linesize);
ci->frame_number++;
}

Write Preview
Loading…
Cancel
Save