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FFmpeg/vhook/null.c
Philip Gladstone 26b4bb70c2 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
2002-11-21 03:50:36 +00:00

74 lines
2.0 KiB
C

/*
* 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;