[Ffmpeg-devel] VIDEO_PALETTE_RGB565 format support

[yi li]

Hi,

I am trying to grab video from a camera sensor with output format
VIDEO_PALETTE_RGB565, but ffmpeg looks does not support this format. I
change libavformat/grab.c as bellow, ffmpeg can be started, but the color of
the grabbed video is not correct. Could anyone give some suggestions?

--- ../../ffmpeg_svn/ffmpeg/libavformat/grab.c  2007-04-13 12:24:
45.000000000 +0800
+++ libavformat/grab.c  2007-04-28 14:49:13.000000000 +0800
@@ -174,8 +174,13 @@
                     pict.palette=VIDEO_PALETTE_GREY;
                     pict.depth=8;
                     ret = ioctl(video_fd, VIDIOCSPICT, &pict);
-                    if (ret < 0)
-                        goto fail1;
+                    if (ret < 0) {
+                       pict.palette=VIDEO_PALETTE_RGB565;
+                       pict.depth=16;
+                       ret = ioctl(video_fd, VIDIOCSPICT, &pict);
+                       if (ret < 0)
+                               goto fail1;
+                   }
                 }
             }
         }
@@ -266,6 +271,10 @@
         frame_size = width * height * 1;
         st->codec->pix_fmt = PIX_FMT_GRAY8;
         break;
+    case VIDEO_PALETTE_RGB565:
+        frame_size = width * height * 2;
+        st->codec->pix_fmt = PIX_FMT_RGB565;
+        break;
     default:
         goto fail;
     }

Thanks  a lot,
-Yi