質問編集履歴
2
開発環境の追記。
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@@ -76,4 +76,96 @@
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Pads:
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SRC: 'src'
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Pad Template: 'src'
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+
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Element Properties:
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blocksize : Size in bytes to read per buffer (-1 = default)
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flags: readable, writable
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Unsigned Integer. Range: 0 - 4294967295 Default: 4096
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can-activate-pull : Can activate in pull mode
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flags: readable, writable
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Boolean. Default: true
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can-activate-push : Can activate in push mode
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flags: readable, writable
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Boolean. Default: true
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data : Data allocation method
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flags: readable, writable
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Enum "GstFakeSrcDataType" Default: 1, "allocate"
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(1): allocate - Allocate data
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(2): subbuffer - Subbuffer data
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datarate : Timestamps buffers with number of bytes per second (0 = none)
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flags: readable, writable
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Integer. Range: 0 - 2147483647 Default: 0
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do-timestamp : Apply current stream time to buffers
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flags: readable, writable
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Boolean. Default: false
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dump : Dump buffer contents to stdout
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flags: readable, writable
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Boolean. Default: false
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filltype : How to fill the buffer, if at all
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flags: readable, writable
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Enum "GstFakeSrcFillType" Default: 1, "nothing"
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(1): nothing - Leave data as malloced
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(2): zero - Fill buffers with zeros
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(3): random - Fill buffers with random data
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(4): pattern - Fill buffers with pattern 0x00 -> 0xff
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(5): pattern-span - Fill buffers with pattern 0x00 -> 0xff that spans buffers
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format : The format of the segment events
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flags: readable, writable
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Enum "GstFormat" Default: 2, "bytes"
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(0): undefined - GST_FORMAT_UNDEFINED
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(1): default - GST_FORMAT_DEFAULT
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(2): bytes - GST_FORMAT_BYTES
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(3): time - GST_FORMAT_TIME
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(4): buffers - GST_FORMAT_BUFFERS
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(5): percent - GST_FORMAT_PERCENT
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is-live : True if the element cannot produce data in PAUSED
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flags: readable, writable
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Boolean. Default: false
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last-message : The last status message
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flags: readable
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String. Default: null
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name : The name of the object
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flags: readable, writable
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String. Default: "fakesrc0"
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num-buffers : Number of buffers to output before sending EOS (-1 = unlimited)
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flags: readable, writable
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Integer. Range: -1 - 2147483647 Default: -1
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parent : The parent of the object
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flags: readable, writable
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Object of type "GstObject"
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parentsize : Size of parent buffer for sub-buffered allocation
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flags: readable, writable
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Integer. Range: 0 - 2147483647 Default: 40960
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pattern : Set the pattern (unused)
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flags: readable, writable
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String. Default: null
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signal-handoffs : Send a signal before pushing the buffer
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flags: readable, writable
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Boolean. Default: false
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silent : Don't produce last_message events
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flags: readable, writable
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Boolean. Default: true
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sizemax : Maximum buffer size
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flags: readable, writable
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Integer. Range: 0 - 2147483647 Default: 4096
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sizemin : Minimum buffer size
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flags: readable, writable
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Integer. Range: 0 - 2147483647 Default: 0
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sizetype : How to determine buffer sizes
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flags: readable, writable
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Enum "GstFakeSrcSizeType" Default: 1, "empty"
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(1): empty - Send empty buffers
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(2): fixed - Fixed size buffers (sizemax sized)
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(3): random - Random sized buffers (sizemin <= size <= sizemax)
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sync : Sync to the clock to the datarate
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flags: readable, writable
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Boolean. Default: false
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typefind : Run typefind before negotiating (deprecated, non-functional)
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flags: readable, writable, deprecated
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Boolean. Default: false
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+
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Element Signals:
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"handoff" : void user_function (GstElement* object,
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GstBuffer* arg0,
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-
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GstPad* arg1,
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gpointer user_data);
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1
開発環境の追記。
title
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File without changes
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body
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@@ -31,4 +31,49 @@
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このコードを動かすと、gst_element_factory_make関数のところでNULLが返ってきます。
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gst_element_factory_make関数でNULLが返ってくるのは、新しいGstElementの要素を作成できない場合と
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リファレンスにありますが、何故要素が作成できないのか分かりません。
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原因、解決方法が分かる方がおられましたら、宜しくお願い致します。
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原因、解決方法が分かる方がおられましたら、宜しくお願い致します。
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追記
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以下の環境で実行しています。
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OS:Windows 10 64bit
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統合開発環境：Visual Studio Express 2013 for Windows Desktop
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また、「gst-inspect-1.0 fakesrc」を実行すると以下の結果が得られます。
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WARNING: no real random source present!
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Factory Details:
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Rank none (0)
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Long-name Fake Source
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Klass Source
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Description Push empty (no data) buffers around
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Author Erik Walthinsen <omega@cse.ogi.edu>, Wim Taymans <wim@fluendo.com>
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Plugin Details:
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Name coreelements
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Description GStreamer core elements
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Filename C:\gstreamer\1.0\x86_64\lib\gstreamer-1.0\libgstcoreelements.dll
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Version 1.16.0
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License LGPL
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Source module gstreamer
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Binary package GStreamer source release
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Origin URL Unknown package origin
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GObject
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+----GInitiallyUnowned
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+----GstObject
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+----GstElement
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+----GstBaseSrc
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+----GstFakeSrc
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Pad Templates:
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SRC template: 'src'
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Availability: Always
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Capabilities:
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ANY
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Element has no clocking capabilities.
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Element has no URI handling capabilities.
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Pads:
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SRC: 'src'
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Pad Template: 'src'
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・・・
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