Re: Multiple Xv overlays cause blue flashing
The grab is client-specific. The grab will only fail if it's owned by another client. This is just to prevent multiple apps from fighting over the same port. It's assumed that if you've got a single client that client will be able to keep track of which ports it's using. Mark. On Thu, 17 Nov 2005, Smoof . wrote: Thanks everyone for the help. The ultimate solution was that I switched to a machine with an nvidia chipset. Then I was able use the video blitter port to send the video images to their respecitve X windows with no flashing. Interesting thing is that I was able to successfully grab the same port multiple times. I would have thought that once a port had been grabbed it would no longer be available. ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel
Re: Multiple Xv overlays cause blue flashing
On Wed, 16 Nov 2005, Smoof . wrote: I should have mentioned earlier that for this project I can specify any video card I want. So if someone has a suggestion of what would be the best video card for this type of application please let me know. My Matrox G550 reports: # xvinfo X-Video Extension version 2.2 screen #0 Adaptor #0: Matrox G-Series Texture Engine number of ports: 32 port base: 43 operations supported: PutImage supported visuals: depth 24, visualID 0x27 depth 24, visualID 0x28 depth 24, visualID 0x29 depth 24, visualID 0x2a no port attributes defined maximum XvImage size: 2046 x 2046 Number of image formats: 4 id: 0x32595559 (YUY2) guid: 59555932--0010-8000-00aa00389b71 bits per pixel: 16 number of planes: 1 type: YUV (packed) id: 0x32315659 (YV12) guid: 59563132--0010-8000-00aa00389b71 bits per pixel: 12 number of planes: 3 type: YUV (planar) id: 0x30323449 (I420) guid: 49343230--0010-8000-00aa00389b71 bits per pixel: 12 number of planes: 3 type: YUV (planar) id: 0x59565955 (UYVY) guid: 55595659--0010-8000-00aa00389b71 bits per pixel: 16 number of planes: 1 type: YUV (packed) I think that the line number of ports: 32 means that it would be suitable. ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel
Re: Multiple Xv overlays cause blue flashing
On Wed, 16 Nov 2005, Smoof . wrote: On Wed, 16 Nov 2005, Alex Deucher wrote: On 11/16/05, Smoof . [EMAIL PROTECTED] wrote: Hello, I am writing an application that will display up to 9 independent video streams (each stream is 320 x 240). I'm new to Xv and may not be using the correct terminology so please bear with me. I have tried two approaches: The first approach was to create one large overlay using XvShmCreateImage and tile in the video frames. Once all frames are tiled in, use XvShmPutImage to send them to the X server. This method works perfectly. However, my ultimate goal is to send each video stream to it's own GTK widget so I can have each video stream playing in a window that can be moved, be surrounded by buttons, minimized, etc... I implemented this by creating a simple GTK app with three drawing areas (ultimately I will have 9) of 320x240 and used some GDK functions to determine the X window id's for the widgets. I created a separate overlay (again using XvShmCreateImage) for each window. Then I call XvShmPutImage once for each window. Finally I call XFlush so send the requests to the X server. I tried using XSync but it seemed to interfere with the GTK event loop. The problem with this second approach is that the overlays are flashing blue (the overlay color key from what I've read). So I looking for advice on how to update multiple overlays at a rate of 24fps without any flashing. Or if you don't think this is possible then please let me know and I'll just have to get by with my first implementation. Most hardware only has one overlay so each widget will be fighting for it. only the one that has it at any given moment will actually display the video; the rest will show the colorkey. Alex Typically, a client will grab the Xv port when using it to prevent other clients from being able to use the same Xv port. When a new client can't grab one Xv port, it looks for another one. That mechanism only works when there are different clients. If you want to do all rendering from the same client, then you need to deliberately use different ports for each Window. Some drivers export more than one adaptor that supports XvImages and some adaptors have more than one port. Overlay adaptors will typically only have a single port. Run xvinfo for a summary of adaptors and their capabilities. Mark. My plan was to do all the rendering with the same client and I know that my overlay adaptor only has a single port for the YUV420 format that I am using. Do you have non-overlay XvImage adaptors with more than one port? NVIDIA drivers and some others offer this. Mark. ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel
Re: Multiple Xv overlays cause blue flashing
Thanks everyone for the help. The ultimate solution was that I switched to a machine with an nvidia chipset. Then I was able use the video blitter port to send the video images to their respecitve X windows with no flashing. Interesting thing is that I was able to successfully grab the same port multiple times. I would have thought that once a port had been grabbed it would no longer be available. ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel
Re: Multiple Xv overlays cause blue flashing
On 11/16/05, Smoof . [EMAIL PROTECTED] wrote: Hello, I am writing an application that will display up to 9 independent video streams (each stream is 320 x 240). I'm new to Xv and may not be using the correct terminology so please bear with me. I have tried two approaches: The first approach was to create one large overlay using XvShmCreateImage and tile in the video frames. Once all frames are tiled in, use XvShmPutImage to send them to the X server. This method works perfectly. However, my ultimate goal is to send each video stream to it's own GTK widget so I can have each video stream playing in a window that can be moved, be surrounded by buttons, minimized, etc... I implemented this by creating a simple GTK app with three drawing areas (ultimately I will have 9) of 320x240 and used some GDK functions to determine the X window id's for the widgets. I created a separate overlay (again using XvShmCreateImage) for each window. Then I call XvShmPutImage once for each window. Finally I call XFlush so send the requests to the X server. I tried using XSync but it seemed to interfere with the GTK event loop. The problem with this second approach is that the overlays are flashing blue (the overlay color key from what I've read). So I looking for advice on how to update multiple overlays at a rate of 24fps without any flashing. Or if you don't think this is possible then please let me know and I'll just have to get by with my first implementation. Most hardware only has one overlay so each widget will be fighting for it. only the one that has it at any given moment will actually display the video; the rest will show the colorkey. Alex Thanks for your help ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel
Re: Multiple Xv overlays cause blue flashing
On Wed, 16 Nov 2005, Alex Deucher wrote: On 11/16/05, Smoof . [EMAIL PROTECTED] wrote: Hello, I am writing an application that will display up to 9 independent video streams (each stream is 320 x 240). I'm new to Xv and may not be using the correct terminology so please bear with me. I have tried two approaches: The first approach was to create one large overlay using XvShmCreateImage and tile in the video frames. Once all frames are tiled in, use XvShmPutImage to send them to the X server. This method works perfectly. However, my ultimate goal is to send each video stream to it's own GTK widget so I can have each video stream playing in a window that can be moved, be surrounded by buttons, minimized, etc... I implemented this by creating a simple GTK app with three drawing areas (ultimately I will have 9) of 320x240 and used some GDK functions to determine the X window id's for the widgets. I created a separate overlay (again using XvShmCreateImage) for each window. Then I call XvShmPutImage once for each window. Finally I call XFlush so send the requests to the X server. I tried using XSync but it seemed to interfere with the GTK event loop. The problem with this second approach is that the overlays are flashing blue (the overlay color key from what I've read). So I looking for advice on how to update multiple overlays at a rate of 24fps without any flashing. Or if you don't think this is possible then please let me know and I'll just have to get by with my first implementation. Most hardware only has one overlay so each widget will be fighting for it. only the one that has it at any given moment will actually display the video; the rest will show the colorkey. Alex Typically, a client will grab the Xv port when using it to prevent other clients from being able to use the same Xv port. When a new client can't grab one Xv port, it looks for another one. That mechanism only works when there are different clients. If you want to do all rendering from the same client, then you need to deliberately use different ports for each Window. Some drivers export more than one adaptor that supports XvImages and some adaptors have more than one port. Overlay adaptors will typically only have a single port. Run xvinfo for a summary of adaptors and their capabilities. Mark. ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel
Re: Multiple Xv overlays cause blue flashing
On Wed, 16 Nov 2005, Alex Deucher wrote: On 11/16/05, Smoof . [EMAIL PROTECTED] wrote: Hello, I am writing an application that will display up to 9 independent video streams (each stream is 320 x 240). I'm new to Xv and may not be using the correct terminology so please bear with me. I have tried two approaches: The first approach was to create one large overlay using XvShmCreateImage and tile in the video frames. Once all frames are tiled in, use XvShmPutImage to send them to the X server. This method works perfectly. However, my ultimate goal is to send each video stream to it's own GTK widget so I can have each video stream playing in a window that can be moved, be surrounded by buttons, minimized, etc... I implemented this by creating a simple GTK app with three drawing areas (ultimately I will have 9) of 320x240 and used some GDK functions to determine the X window id's for the widgets. I created a separate overlay (again using XvShmCreateImage) for each window. Then I call XvShmPutImage once for each window. Finally I call XFlush so send the requests to the X server. I tried using XSync but it seemed to interfere with the GTK event loop. The problem with this second approach is that the overlays are flashing blue (the overlay color key from what I've read). So I looking for advice on how to update multiple overlays at a rate of 24fps without any flashing. Or if you don't think this is possible then please let me know and I'll just have to get by with my first implementation. Most hardware only has one overlay so each widget will be fighting for it. only the one that has it at any given moment will actually display the video; the rest will show the colorkey. Alex Typically, a client will grab the Xv port when using it to prevent other clients from being able to use the same Xv port. When a new client can't grab one Xv port, it looks for another one. That mechanism only works when there are different clients. If you want to do all rendering from the same client, then you need to deliberately use different ports for each Window. Some drivers export more than one adaptor that supports XvImages and some adaptors have more than one port. Overlay adaptors will typically only have a single port. Run xvinfo for a summary of adaptors and their capabilities. Mark. My plan was to do all the rendering with the same client and I know that my overlay adaptor only has a single port for the YUV420 format that I am using. Can someone say if the following would be possible: Suppose I create a single overlay that is the size of the entire screen. Then I could track the absolute position and visibility of the individual widget windows I want to send the video streams to. I would then tile in the images into the correct spot in the overlay to match the window position. Now, if there were some way of using the alpha channel to only cause the certain portions of the overlay to be seen then that might do the trick. Or could I just manually fill the areas I want to expose with the color key? Please keep in mind that I really don't know what I'm talking about and have no idea if this is possible but it sounds like the only way to prevent the flashing is to use a single overlay and somehow figure out how to share it among the widget windows. Thanks for your help and advice. ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel
Re: Multiple Xv overlays cause blue flashing
Smoof . wrote: My plan was to do all the rendering with the same client and I know that my overlay adaptor only has a single port for the YUV420 format that I am using. Can someone say if the following would be possible: Suppose I create a single overlay that is the size of the entire screen. Then I could track the absolute position and visibility of the individual widget windows I want to send the video streams to. I would then tile in the images into the correct spot in the overlay to match the window position. Now, if there were some way of using the alpha channel to only cause the certain portions of the overlay to be seen then that might do the trick. Or could I just manually fill the areas I want to expose with the color key? Please keep in mind that I really don't know what I'm talking about and have no idea if this is possible but it sounds like the only way to prevent the flashing is to use a single overlay and somehow figure out how to share it among the widget windows. Does your graphics card support OpenGL? One practical alternative is to render the movies into textures. -- Tim Roberts, [EMAIL PROTECTED] Providenza Boekelheide, Inc. ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel
Re: Multiple Xv overlays cause blue flashing
Smoof . wrote: My plan was to do all the rendering with the same client and I know that my overlay adaptor only has a single port for the YUV420 format that I am using. Can someone say if the following would be possible: Suppose I create a single overlay that is the size of the entire screen. Then I could track the absolute position and visibility of the individual widget windows I want to send the video streams to. I would then tile in the images into the correct spot in the overlay to match the window position. Now, if there were some way of using the alpha channel to only cause the certain portions of the overlay to be seen then that might do the trick. Or could I just manually fill the areas I want to expose with the color key? Please keep in mind that I really don't know what I'm talking about and have no idea if this is possible but it sounds like the only way to prevent the flashing is to use a single overlay and somehow figure out how to share it among the widget windows. Does your graphics card support OpenGL? One practical alternative is to render the movies into textures. Yes, I ran the SDL GL test program (testgl) and here is the output Screen BPP: 32 Vendor : Mesa project: www.mesa3d.org Renderer : Mesa GLX Indirect Version: 1.3 Mesa 4.0.4 Extensions : GL_ARB_imaging GL_ARB_multitexture GL_ARB_texture_border_clamp GL_ARB_texture_cube_map GL_ARB_texture_env_add GL_ARB_texture_env_combine GL_ARB_texture_env_dot3 GL_ARB_transpose_matrix GL_EXT_abgr GL_EXT_blend_color GL_EXT_blend_minmax GL_EXT_blend_subtract GL_EXT_texture_env_add GL_EXT_texture_env_combine GL_EXT_texture_env_dot3 GL_EXT_texture_lod_bias I don't know anything about openGL or textures but I'll start doing some research. I should have mentioned earlier that for this project I can specify any video card I want. So if someone has a suggestion of what would be the best video card for this type of application please let me know. Thanks for the help. ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel
Re: Multiple Xv overlays cause blue flashing
On 11/16/05, Smoof . [EMAIL PROTECTED] wrote: Smoof . wrote: My plan was to do all the rendering with the same client and I know that my overlay adaptor only has a single port for the YUV420 format that I am using. Can someone say if the following would be possible: Suppose I create a single overlay that is the size of the entire screen. Then I could track the absolute position and visibility of the individual widget windows I want to send the video streams to. I would then tile in the images into the correct spot in the overlay to match the window position. Now, if there were some way of using the alpha channel to only cause the certain portions of the overlay to be seen then that might do the trick. Or could I just manually fill the areas I want to expose with the color key? Please keep in mind that I really don't know what I'm talking about and have no idea if this is possible but it sounds like the only way to prevent the flashing is to use a single overlay and somehow figure out how to share it among the widget windows. Does your graphics card support OpenGL? One practical alternative is to render the movies into textures. Yes, I ran the SDL GL test program (testgl) and here is the output Screen BPP: 32 Vendor : Mesa project: www.mesa3d.org Renderer : Mesa GLX Indirect Version: 1.3 Mesa 4.0.4 Extensions : GL_ARB_imaging GL_ARB_multitexture GL_ARB_texture_border_clamp GL_ARB_texture_cube_map GL_ARB_texture_env_add GL_ARB_texture_env_combine GL_ARB_texture_env_dot3 GL_ARB_transpose_matrix GL_EXT_abgr GL_EXT_blend_color GL_EXT_blend_minmax GL_EXT_blend_subtract GL_EXT_texture_env_add GL_EXT_texture_env_combine GL_EXT_texture_env_dot3 GL_EXT_texture_lod_bias this is software OpenGL. I don't know anything about openGL or textures but I'll start doing some research. I should have mentioned earlier that for this project I can specify any video card I want. So if someone has a suggestion of what would be the best video card for this type of application please let me know. Thanks for the help. many graphics cards even support YUV textures. mesa has an extension to expose that functionality (MESA_ycbcr_texture, IIRC) Alex ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel
