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authorscuri <scuri>2008-10-17 06:10:15 +0000
committerscuri <scuri>2008-10-17 06:10:15 +0000
commit5a422aba704c375a307a902bafe658342e209906 (patch)
tree5005011e086bb863d8fb587ad3319bbec59b2447 /include/im_format_wmv.h
First commit - moving from LuaForge to SourceForge
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+/** \file
+ * \brief Register the WMF Format
+ *
+ * See Copyright Notice in im_lib.h
+ */
+
+#ifndef __IM_FORMAT_WMV_H
+#define __IM_FORMAT_WMV_H
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+/** \defgroup wmv WMV - Windows Media Video Format
+ * \section Description
+ *
+ * \par
+ * Advanced Systems Format (ASF) \n
+ * Windows Copyright Microsoft Corporation.
+ * \par
+ * Access to the WMV format uses Windows Media SDK. Available in Windows Only. \n
+ * You must link the application with "im_wmv.lib"
+ * and you must call the function \ref imFormatRegisterWMV once
+ * to register the format into the IM core library. \n
+ * Depends also on the WMF SDK (wmvcore.lib).
+ * When using the "im_wmv.dll" this extra library is not necessary.
+ * \par
+ * The application users should have the WMV codec 9 installed:
+ * http://www.microsoft.com/windows/windowsmedia/format/codecdownload.aspx
+ * \par
+ * You must agree with the WMF SDK EULA to use the SDK. \n
+ * http://wmlicense.smdisp.net/v9sdk/
+ * \par
+ * For more information: \n
+ * http://www.microsoft.com/windows/windowsmedia/9series/sdk.aspx \n
+ * http://msdn.microsoft.com/library/en-us/wmform/htm/introducingwindowsmediaformat.asp
+ * \par
+ * See \ref im_format_wmv.h
+ *
+ * \section Features
+ *
+\verbatim
+ Data Types: Byte
+ Color Spaces: RGB and MAP (Gray and Binary saved as MAP)
+ Compressions (installed in Windows XP by default):
+ NONE - no compression
+ MPEG-4v3 - Windows Media MPEG-4 Video V3
+ MPEG-4v1 - ISO MPEG-4 Video V1
+ WMV7 - Windows Media Video V7
+ WMV7Screen - Windows Media Screen V7
+ WMV8 - Windows Media Video V8
+ WMV9Screen - Windows Media Video 9 Screen
+ WMV9 - Windows Media Video 9 [default]
+ Unknown - Others
+ Can have more than one image.
+ Can have an alpha channel (only for RGB) ?
+ Internally the components are always packed.
+ Lines arranged from top down to bottom or bottom up to top.
+ Handle(0) return NULL. imBinFile is not supported.
+ Handle(1) returns IWMSyncReader* when reading, IWMWriter* when writing.
+
+ Attributes:
+ FPS IM_FLOAT (1) (should set when writing, default 15)
+ WMFQuality IM_INT (1) [0-100, default 50] (write only)
+ MaxKeyFrameTime IM_INT (1) (write only) [maximum key frame interval in miliseconds, default 5 seconds]
+ DataRate IM_INT (1) (write only) [kilobits/second, default 2400]
+ VBR IM_INT (1) [0, 1] (write only) [0 - Constant Bit Rate (default), 1 - Variable Bit Rate (Quality-Based)]
+ (and several others from the file-level attributes) For ex:
+ Title, Author, Copyright, Description (string)
+ Duration IM_INT [100-nanosecond units]
+ Seekable, HasAudio, HasVideo, Is_Protected, Is_Trusted, IsVBR IM_INT (1) [0, 1]
+ NumberOfFrames IM_INT (1)
+
+ Comments:
+ IMPORTANT - The "image_count" and the "FPS" attribute may not be available from the file,
+ we try to estimate from the duration and from the average time between frames, or using the default value.
+ We do not handle DRM protected files (Digital Rights Management).
+ Reads only the first video stream. Other streams are ignored.
+ All the images have the same size, you must call imFileReadImageInfo/imFileWriteImageInfo
+ at least once.
+ For optimal random reading, the file should be indexed previously.
+ If not indexed by frame, random positioning may not be precise.
+ Sequencial reading will always be precise.
+ When writing we use a custom profile and time indexing only.
+ We do not support multipass encoding.
+ Since the driver uses COM, CoInitialize(NULL) and CoUninitialize() are called every Open/Close.
+\endverbatim
+ * \ingroup format */
+
+/** Register the WMF Format. \n
+ * In Lua, when using require"imlua_wmv" this function will be automatically called.
+ * \ingroup wmv */
+void imFormatRegisterWMV(void);
+
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif