vhook/null.c

   1 /*
   2  * Null Video Hook
   3  * Copyright (c) 2002 Philip Gladstone
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  */
  19 #include <stdio.h>
  20
  21 #include "framehook.h"
  22
  23 typedef struct {
  24     int dummy;
  25 } ContextInfo;
  26
  27 void Release(void *ctx)
  28 {
  29     ContextInfo *ci;
  30     ci = (ContextInfo *) ctx;
  31
  32     if (ctx)
  33         av_free(ctx);
  34 }
  35
  36 int Configure(void **ctxp, int argc, char *argv[])
  37 {
  38     fprintf(stderr, "Called with argc=%d\n", argc);
  39
  40     *ctxp = av_mallocz(sizeof(ContextInfo));
  41     return 0;
  42 }
  43
  44 void Process(void *ctx, AVPicture *picture, enum PixelFormat pix_fmt, int width, int height, INT64 pts)
  45 {
  46     ContextInfo *ci = (ContextInfo *) ctx;
  47     char *buf = 0;
  48     AVPicture picture1;
  49     AVPicture *pict = picture;
  50
  51     (void) ci;
  52
  53     if (pix_fmt != PIX_FMT_RGB24) {
  54         int size;
  55
  56         size = avpicture_get_size(PIX_FMT_RGB24, width, height);
  57         buf = av_malloc(size);
  58
  59         avpicture_fill(&picture1, buf, PIX_FMT_RGB24, width, height);
  60         if (img_convert(&picture1, PIX_FMT_RGB24,
  61                         picture, pix_fmt, width, height) < 0) {
  62             av_free(buf);
  63             return;
  64         }
  65         pict = &picture1;
  66     }
  67
  68     /* Insert filter code here */
  69
  70     if (pix_fmt != PIX_FMT_RGB24) {
  71         if (img_convert(picture, pix_fmt,
  72                         &picture1, PIX_FMT_RGB24, width, height) < 0) {
  73         }
  74     }
  75
  76     av_free(buf);
  77 }
  78