DirectShow.NETCF
DirectShow.NETCF - Library that allows you to use DirectShow (play multimedia, capture/compress/recompress/preview audio and video) on Windows Mobile 5 or older devices.
Current version: 2.2.0.0
Available:
DirectShowNETCF
ComImports + PInvoke necessary API + some useful classes and methods
DirectShowNETCF.Player
Player class allows you to play audio and video files.
Methods:
- public bool renderFile(string fileName) - build graph for required file if it possible
- public bool play() - starts or continues play media file
- public bool stop() - stops play file
- public bool pause() - pauses play file
- public bool setVideoWindow(IntPtr owner) - if it video file then you can set control that video should be rendered on
DirectShowNETCF.Camera
Allows you to preview video from camera, still images (still images and preview in the same time) in future record video.
Methods and Properties:
- public CaptureType CapType - you can set one of type Preview, Still, PreviewStill
- public bool init() - builds graph (note: you should set CaptureType, befor init camera)
- public void release() - destroys graph (free all camera resources)
- public void stop() - stops graph
- public bool run(IntPtr owner) - runs graph and starts render captured video on required control
- public bool run() - runs graph
- public bool stillImage(string tmpPath) - stills and saves video.
- public List<string> getMediaTypes() - returns list of supported resolutions
- public void setMediaType(int index) - changes resolution from current to required
- public bool resize(IntPtr owner, int width, int height) - call this method if you resized preview control and you want preview to be stretched for new control size
- public bool flashOn() - turns flash on
- public bool flashOff() - turns flash off
- public bool zoomOut() - Zoom -
- public bool zoomIn() - Zoom +
- public bool focusMinus() - Focus -
- public bool focusPlus() - Focus +
- public bool autoFocusOff() - Turns Off autofocus
- public bool autoFocusOn() - Turns On autofocus
DirectShowNETCF.Camera.AMCamera
Allows you to preview video from camera and grab raw frames, also allows to receive frames from camera without previewing
Methods and Properties:
- public bool init(bool nullPreview) - builds graph
- public void release() - destroys graph (free all camera resources)
- public void stop() - stops graph
- public bool run(IntPtr owner) - runs graph and starts render captured video on required control
- public IntPtr grabFrame(ref long bufSize) - returns raw frame and buffer size, you have to free buffer when you dont need it (call DirectShowNETCF.PInvoke.LocalFree(IntPtr))
- public bool getGrayScaleImage(IntPtr scan0, int stride) - grabs raw frame and make grayscale image from it. Now works wor rgb565 and YV12 formats.
- public void getParams(out int width, out int height, out RawFrameFormat format) - returns width, height and format of raw frame
- public void startDrawText(string text) - draws text on preview
- stopDrawText() - stops draw text
- public List<string> getMediaTypes() - returns list of supported resolutions
- public void setMediaType(int index) - changes resolution from current to required (you have to call init and start again after changing resolution)
- public bool resize(IntPtr owner, int width, int height) - call this method if you resized preview control and you want preview to be stretched for new control size
- public bool flashOn() - turns flash on
- public bool flashOff() - turns flash off
- public bool zoomOut() - Zoom -
- public bool zoomIn() - Zoom +
- public bool focusMinus() - Focus -
- public bool focusPlus() - Focus +
- public bool autoFocusOff() - Turns Off autofocus
- public bool autoFocusOn() - Turns On autofocus
- public bool drawTarget(Rect rect, int type) - draws target on preview, you can define rect and target type
- public bool stopDrawTarget() - stops draw target on preview
- public bool getRgb565(IntPtr scan0) - grabs raw frame and makes rgb565 image from it. Now works wor rgb565 and YV12 formats.
DirectShowNETCF.Camera.AMCameraEx
Allows you to preview video from camera, grab raw RGB24 frames, apply effects for video, draws up to 10 bitmaps on preview
Methods and Properties:
- public bool init(RotationType rotationType) - builds graph (you can choose type of rotation: None, Auto, Degree90)
- public void release() - destroys graph (free all camera resources)
- public void stop() - stops graph
- public bool run(IntPtr owner) - runs graph and starts render captured video on required control
- public void fixPreview(bool fix) - fixes preview for Toshiba and LG devices as they have incorrect Chroma buffer ordering
- public IntPtr grabFrame() - returns raw frame (RGB24, size = 3 * width * height), you have to free buffer when you dont need it (call DirectShowNETCF.PInvoke.LocalFree(IntPtr))
- public void applyEffect(Effets effect) - applies one of availabel effects (none, grayscale, black and white, sepia, edge detection and cropoval)
- public void drawBitmap(IntPtr ptr, int id, int x, int y, int width, int height) - draws bitmap on preview
- public void drawTransparentBitmap(IntPtr ptr, int id, int x, int y, int width, int height, int r, int g, int b) - draws bitmap on preview except pixels that the same with transparent color
- public void blendBitmap(IntPtr ptr, int id, int x, int y, int width, int height, int blend) - blends preview and required bitmap
- public void eraseBitmap(int id) - Erases earlier drawn bitmap
- public void getRect(out int width, out int height) - returns width and height of raw frame
- public List<string> getMediaTypes() - returns list of supported resolutions
- public void setMediaType(int index) - changes resolution from current to required (you have to call init and start again after changing resolution)
- public bool resize(IntPtr owner, int width, int height) - call this method if you resized preview control and you want preview to be stretched for new control size
- public bool flashOn() - turns flash on
- public bool flashOff() - turns flash off
- public bool zoomOut() - Zoom -
- public bool zoomIn() - Zoom +
- public bool focusMinus() - Focus -
- public bool focusPlus() - Focus +
- public bool autoFocusOff() - Turns Off autofocus
- public bool autoFocusOn() - Turns On autofocus
NullCamera
Allows to grab frames from camera without preview
Methods:
- public bool init() - builds grap
- public void release() - destroys graph
- public void stop() - stops graph
- public bool run() - runs graph
Events:
- EventHandler<FrameEventArgs> GotFrame - fires every time we got new frame from camera.
AMCameraExControl 1.5.0.0
Control that allows you to preview stream from camera, grab bitmaps, draw bitmap on preview, control flash/focus/zoom (if your camera allows it)
Methods and Properties:
- public bool Start() - starts preview
- public void Stop() - stops camera
- public Bitmap GrabFrame() - grabs current frame and returns it as Bitmap
- public void FixPreview(bool needFix) - fix preview for Toshiba and LG devices
- public void Overlay(Bitmap bmp, int id, int x, int y) - draws bitmap on preview, x and y - coord of left top corner, id - id that will be used to erase bitmap when you need
- public void OverlayTransparent(Bitmap bmp, int id, int x, int y, Color transparentColor) - draws bitmap on preview except pixels that equal to transparentColor, x and y - coord of left top corner, id - id that will be used to erase bitmap when you need
- public void BlendBitmap(Bitmap bmp, int id, int x, int y, byte blend) - blends preview and passed bitmap
- public void eraseBitmap(int id) - Erases earlier drawn bitmap
- public Effects Effect - allows you to aplly 1 of supported effects (None, GrayScale, BlackAndWhite, EdgeDetection, CropOval)
- public bool FlashOn() - turns flash on
- public bool FlashOff() - turns flash off
- public bool ZoomOut() - Zoom -
- public bool ZoomIn() - Zoom +
- public bool FocusMinus() - Focus -
- public bool FocusPlus() - Focus +
- public bool AutoFocusOff() - Turns Off autofocus
- public bool AutoFocusOn() - Turns On autofocus
- Allows to handle mouse click (mouse down)
PlayerControl 1.5.0.0
Player class allows you to play audio and video files and mms streams. Also player allow to seek on media, control volume and grab frames.
Properties:
- public bool Loop - if true then when video ended starts play again
- public int VideoWidth - real video width
- public int VideoHeight - real video height
- public int Volume - you can control player volume (range 0-10000)
- public int Balance - you can control sound balance
- public int BitRate - video bitrate if possible to detect
Methods:
- public void OpenFile(string filePath) - Builds graph that allows to play required file
- public void Play() - starts or continues play media file
- public void Stop() - stops play file
- public void Pause() - pauses play file
- public void Seek(TimeSpan position) - Sets media to required position
- public TimeSpan GetDuration() - Gets Duration of media file
Events:
- public event EventHandler MediaFailed - fiers if its impossible to render file
- public event EventHandler MediaEnded -fiers when file plaed to the end
- public event EventHandler<ProgressEventArgs> MediaProgress - fiers every 0,3 seconds and informs about current progress
P.S:
October 3rd, 2009 at 7:19 pm
Hi admin, this is the bigger picture I took using phone camera, while the smaller is from your directshow library. When I go to Device Settings then the phone supports QVGA 480×640 32bit so it will be nice if we can catch pictures as the same size.
BTW thanks for your help.
October 3rd, 2009 at 7:03 pm
i dont know where you see picture 480×640, anyway picture can be stratched, but if you see it in default device application you should anderstand that definitly not directshow
October 3rd, 2009 at 6:59 pm
Thanks for the quick answer. I have try GetRange function for Zooming but it has the same error. For the resolution, the picture we see on the screen is the same size as the phone resolution (480×640), however the picture received from this library is just two time smaller (240×320). I am wonder anthing wrong here. Could you please explain to me? Thank you so much.
October 3rd, 2009 at 6:04 pm
2kha if flash still doesnt work then i cant fix it without device only trying to guess… when i buy new one i definitly fix it
and i dont change resolution if you receive 240×320 frames then this is you device preview resolution
October 3rd, 2009 at 5:52 pm
Dear admin,
One more thing is that the resolution is smaller the current mobile setting.
I.e. my phone has 480×640 but the picture is generated with only a haft, 240×320.
Is there any mistake for me? Thank you.
October 3rd, 2009 at 2:59 pm
Thank you very much for the rectangle. It works perfect.
However the flash is still off in HTC P3700. Nothing was
received when function GetRange called.
Could you please check it again?
Thank again.
October 3rd, 2009 at 1:43 pm
Changes was added, now you can define Rect where target should be drawn (dont forget that rect depends of frame size, not control), also you can define target type for now it can be rectangle and target like was in previous version.
P.S. i made small changes in flash function hope it will fix bug and make flashOn/flashOff workable
October 2nd, 2009 at 1:59 pm
Dear admin,
I cannot do flash on/off on HTC P3700 (WM 6.1 Pro). When I do debug, IAMcamcontrol.Getrange return fail so flash function was not reached.
By the way, can I chance the position of RED rectangle in preview?
Thank you for your help.
October 2nd, 2009 at 12:38 am
Hi,
I have createt a new Project with the new files. I just forgot tu update the DirectShowNETCF.Native.dll… d’oh.
But is there a was to paint a custom Rectangle on the picture? that would be nice, or a function to use the zoom of the cam?
all in all it’s a great lib, thanks so far =)
October 1st, 2009 at 3:57 pm
To Admin: Unfortunately, after the bugfix the image is still deformed. But I’ve managed to write a function for conversion from YV12 to RGB24bpp which works OK, at least on my device, so now I can use AMCamera.grabFrame() without problems. If you want, I can send you the code. Anyway, thanks for your lib again.
To Hibbert: I think I’ve already seen a similar message, unfortunately I can’t remember the cause
I will try to recall it, but since I know I was able to fix the problem, I recommend you to check again your code and deploying of DirectShowNETCF.Native.dll, because the answer is probably there…