1DTK_LOAD_VIDEO_UDP(3)         Draw Toolkit manual        DTK_LOAD_VIDEO_UDP(3)
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NAME

6       dtk_load_video_udp  - Load an video stream via UDP connection as a tex‐
7       ture
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SYNOPSIS

10       #include <dtk_video.h>
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12       dtk_htex dtk_load_video_udp(int flags, int port);
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DESCRIPTION

15       This function loads as a dynamic texture the video  stream  broadcasted
16       over  the  network  via  UDP by listening to the port port. The texture
17       will then been tracked by an internal texture manager so that the  next
18       call using the same port arguments will return the same texture handle,
19       thus sparing the resources of the system. If not specified by flags the
20       video  will  not  be played immediately and dtk_video_exec(3) should be
21       called to do start playing.
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23       The argument flags is used to modify the creation. It should contains a
24       bitwise OR combination of the following flags:
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26              DTK_AUTOSTART  :  Indicates  that the video should start immedi‐
27              ately after creation.
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29              DTK_NOBLOCKING : Indicates that the creation function should not
30              block waiting that the video pipeline is fully running.
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32       A  dynamic  texture  can  be used the same way as a static texture (for
33       example image file). The only difference is that  the  content  of  the
34       texture changes automatically with the stream of video. This means that
35       every time a shape using this texture is drawn, the latest frame avail‐
36       able from the video stream will be mapped on the shape.
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38       There  is  no need for a valid window to create successfully a texture,
39       i.e.  creation of textures are completely decoupled from  the  creation
40       of others resources and can even be created in one thread to be used in
41       another one.
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43       Once a the texture is stopped being used, it  should  be  destroyed  by
44       dtk_destroy_texture(3).
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RETURN VALUE

47       In case of success, the function returns the handle to the created tex‐
48       ture.  In case of failure, NULL is returned.
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THREAD SAFETY

51       dtk_load_video_udp() is thread-safe.
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SEE ALSO

54       dtk_destroy_texture(3), dtk_video_exec(3), dtk_video_getstate(3)
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58EPFL                                 2011                DTK_LOAD_VIDEO_UDP(3)
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