| GStreamer Core Plugins 1.0 Plugins Reference Manual | ||||
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| Top | Description | Object Hierarchy | Properties | Signals | ||||
struct GstFakeSrc; enum GstFakeSrcDataType; enum GstFakeSrcFillType; enum GstFakeSrcOutputType; enum GstFakeSrcSizeType;
GObject +----GInitiallyUnowned +----GstObject +----GstElement +----GstBaseSrc +----GstFakeSrc
"can-activate-pull" gboolean : Read / Write / Construct "can-activate-push" gboolean : Read / Write / Construct "data" GstFakeSrcDataType : Read / Write "datarate" gint : Read / Write "dump" gboolean : Read / Write "filltype" GstFakeSrcFillType : Read / Write "format" GstFormat : Read / Write "is-live" gboolean : Read / Write / Construct "last-message" gchar* : Read "parentsize" gint : Read / Write "pattern" gchar* : Read / Write "signal-handoffs" gboolean : Read / Write "silent" gboolean : Read / Write "sizemax" gint : Read / Write "sizemin" gint : Read / Write "sizetype" GstFakeSrcSizeType : Read / Write "sync" gboolean : Read / Write
The fakesrc element is a multipurpose element that can generate a wide range of buffers and can operate in various scheduling modes.
It is mostly used as a testing element, one trivial example for testing basic GStreamer core functionality is:
1 |
gst-launch -v fakesrc num-buffers=5 ! fakesink |
Last reviewed on 2008-06-20 (0.10.21)
plugin |
coreelements |
author |
Erik Walthinsen <omega@cse.ogi.edu>, Wim Taymans <wim@fluendo.com> |
class |
Source |
typedef enum {
FAKE_SRC_DATA_ALLOCATE = 1,
FAKE_SRC_DATA_SUBBUFFER
} GstFakeSrcDataType;
The different ways buffers are allocated.
typedef enum {
FAKE_SRC_FILLTYPE_NOTHING = 1,
FAKE_SRC_FILLTYPE_ZERO,
FAKE_SRC_FILLTYPE_RANDOM,
FAKE_SRC_FILLTYPE_PATTERN,
FAKE_SRC_FILLTYPE_PATTERN_CONT
} GstFakeSrcFillType;
The different ways of filling the buffers.
typedef enum {
FAKE_SRC_FIRST_LAST_LOOP = 1,
FAKE_SRC_LAST_FIRST_LOOP,
FAKE_SRC_PING_PONG,
FAKE_SRC_ORDERED_RANDOM,
FAKE_SRC_RANDOM,
FAKE_SRC_PATTERN_LOOP,
FAKE_SRC_PING_PONG_PATTERN,
FAKE_SRC_GET_ALWAYS_SUCEEDS
} GstFakeSrcOutputType;
The different output types. Unused currently.
| first pad then last pad | |
| last pad then first pad | |
| ping pong between pads | |
| ordered random pad | |
| random pad | |
| loop between pads in a particular pattern | |
| ping pong based on a pattern | |
| a get always succeeds on a pad |
"can-activate-pull" property"can-activate-pull" gboolean : Read / Write / Construct
Can activate in pull mode.
Default value: TRUE
"can-activate-push" property"can-activate-push" gboolean : Read / Write / Construct
Can activate in push mode.
Default value: TRUE
"data" property"data" GstFakeSrcDataType : Read / Write
Data allocation method.
Default value: Allocate data
"datarate" property"datarate" gint : Read / Write
Timestamps buffers with number of bytes per second (0 = none).
Allowed values: >= 0
Default value: 0
"dump" property"dump" gboolean : Read / Write
Dump buffer contents to stdout.
Default value: FALSE
"filltype" property"filltype" GstFakeSrcFillType : Read / Write
How to fill the buffer, if at all.
Default value: Fill buffers with zeros
"format" property"format" GstFormat : Read / Write
Set the format of the newsegment events to produce.
Default value: GST_FORMAT_BYTES
"is-live" property"is-live" gboolean : Read / Write / Construct
True if the element cannot produce data in PAUSED.
Default value: FALSE
"last-message" property"last-message" gchar* : Read
The last status message.
Default value: NULL
"parentsize" property"parentsize" gint : Read / Write
Size of parent buffer for sub-buffered allocation.
Allowed values: >= 0
Default value: 40960
"signal-handoffs" property"signal-handoffs" gboolean : Read / Write
Send a signal before pushing the buffer.
Default value: FALSE
"silent" property"silent" gboolean : Read / Write
Don't produce last_message events.
Default value: TRUE
"sizemax" property"sizemax" gint : Read / Write
Maximum buffer size.
Allowed values: >= 0
Default value: 4096
"sizemin" property"sizemin" gint : Read / Write
Minimum buffer size.
Allowed values: >= 0
Default value: 0
"sizetype" property"sizetype" GstFakeSrcSizeType : Read / Write
How to determine buffer sizes.
Default value: Send empty buffers
"sync" property"sync" gboolean : Read / Write
Sync to the clock to the datarate.
Default value: FALSE
"handoff" signalvoid user_function (GstFakeSrc *fakesrc,
GstBuffer *buffer,
GstPad *pad,
gpointer user_data) : Run Last
This signal gets emitted before sending the buffer.
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the fakesrc instance |
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the buffer that will be pushed |
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the pad that will sent it |
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user data set when the signal handler was connected. |