GESPipeline: GStreamer Editing Services 1.7.91 Reference Manual

## GESPipeline GESPipeline — Convenience GstPipeline for editing. |

## Functions

GESPipeline * | ges_pipeline_new ()
gboolean | ges_pipeline_set_timeline ()
gboolean | ges_pipeline_set_mode ()
gboolean | ges_pipeline_set_render_settings ()
GstElement * | ges_pipeline_preview_get_audio_sink ()
GstElement * | ges_pipeline_preview_get_video_sink ()
void | ges_pipeline_preview_set_audio_sink ()
void | ges_pipeline_preview_set_video_sink ()
GESPipelineFlags | ges_pipeline_get_mode ()
GstSample * | ges_pipeline_get_thumbnail ()
GstSample * | ges_pipeline_get_thumbnail_rgb24 ()
gboolean | ges_pipeline_save_thumbnail ()

## Properties

GstElement * | audio-filter | Read / Write
GstElement * | audio-sink | Read / Write
GESPipelineFlags | mode | Read / Write
GESTimeline * | timeline | Read / Write
GstElement * | video-filter | Read / Write
GstElement * | video-sink | Read / Write

## Types and Values

| GESPipeline

## Object Hierarchy

        GObject
        ╰── GInitiallyUnowned
            ╰── GstObject
                ╰── GstElement
                    ╰── GstBin
                        ╰── GstPipeline
                            ╰── GESPipeline

## Implemented Interfaces

GESPipeline implements GstChildProxy and GstVideoOverlay.

## Includes

    #include <ges/ges.h>

## Description

GESPipeline allows developers to view and render GESTimeline in a simple fashion. Its usage is inspired by the 'playbin' element from gst-plugins-base.

## Functions

### ges_pipeline_new ()

    GESPipeline *
    ges_pipeline_new (void);

Creates a new conveninence GESPipeline.

#### Returns

the new GESPipeline.

### ges_pipeline_set_timeline ()

    gboolean
    ges_pipeline_set_timeline (GESPipeline *pipeline,
                               GESTimeline *timeline);

Sets the timeline to use in this pipeline.

The reference to the `timeline` will be stolen by the `pipeline` .

#### Parameters

pipeline | a GESPipeline |
timeline | the GESTimeline to set on the `pipeline` . |

#### Returns

TRUE if the `timeline` could be successfully set on the `pipeline` , else FALSE.

### ges_pipeline_set_mode ()

    gboolean
    ges_pipeline_set_mode (GESPipeline *pipeline,
                           GESPipelineFlags mode);

switches the `pipeline` to the specified `mode` . The default mode when creating a GESPipeline is GES_PIPELINE_MODE_PREVIEW.

Note: The `pipeline` will be set to GST_STATE_NULL during this call due to the internal changes that happen. The caller will therefore have to set the `pipeline` to the requested state after calling this method.

#### Parameters

pipeline | a GESPipeline |
mode | the GESPipelineFlags to use |

#### Returns

`TRUE` if the mode was properly set, else `FALSE`.

### ges_pipeline_set_render_settings ()

    gboolean
    ges_pipeline_set_render_settings (GESPipeline *pipeline,
                                      const gchar *output_uri,
                                      GstEncodingProfile *profile);

Specify where the pipeline shall be rendered and with what settings.

A copy of `profile` and `output_uri` will be done internally, the caller can safely free those values afterwards.

This method must be called before setting the pipeline mode to GES_PIPELINE_MODE_RENDER

#### Parameters

pipeline | a GESPipeline |
output_uri | the URI to which the timeline will be rendered |
profile | the GstEncodingProfile to use to render the timeline. |

#### Returns

`TRUE` if the settings were aknowledged properly, else `FALSE`

### ges_pipeline_preview_get_audio_sink ()

    GstElement *
    ges_pipeline_preview_get_audio_sink (GESPipeline *self);

Obtains a pointer to playsink's audio sink element that is used for displaying audio when the GESPipeline is in `GES_PIPELINE_MODE_PREVIEW`

The caller is responsible for unreffing the returned element with gst_object_unref.

#### Parameters

self | a GESPipeline |

#### Returns

a pointer to the playsink audio sink GstElement.

[transfer full]

### ges_pipeline_preview_get_video_sink ()

    GstElement *
    ges_pipeline_preview_get_video_sink (GESPipeline *self);

Obtains a pointer to playsink's video sink element that is used for displaying video when the GESPipeline is in `GES_PIPELINE_MODE_PREVIEW`

The caller is responsible for unreffing the returned element with gst_object_unref.

#### Parameters

self | a GESPipeline |

#### Returns

a pointer to the playsink video sink GstElement.

[transfer full]

### ges_pipeline_preview_set_audio_sink ()

    void
    ges_pipeline_preview_set_audio_sink (GESPipeline *self,
                                         GstElement *sink);

Sets playsink's audio sink element that is used for displaying audio when the GESPipeline is in `GES_PIPELINE_MODE_PREVIEW`

#### Parameters

self | a GESPipeline in `GST_STATE_NULL` |
sink | a audio sink GstElement. | [transfer none]

### ges_pipeline_preview_set_video_sink ()

    void
    ges_pipeline_preview_set_video_sink (GESPipeline *self,
                                         GstElement *sink);

Sets playsink's video sink element that is used for displaying video when the GESPipeline is in `GES_PIPELINE_MODE_PREVIEW`

#### Parameters

self | a GESPipeline in `GST_STATE_NULL` |
sink | a video sink GstElement. | [transfer none]

### ges_pipeline_get_mode ()

    GESPipelineFlags
    ges_pipeline_get_mode (GESPipeline *pipeline);

#### Parameters

pipeline | a GESPipeline |

#### Returns

the GESPipelineFlags currently in use.

### ges_pipeline_get_thumbnail ()

    GstSample *
    ges_pipeline_get_thumbnail (GESPipeline *self,
                                GstCaps *caps);

Returns a GstSample with the currently playing image in the format specified by caps. The caller should free the sample with gst_sample_unref when finished. If ANY caps are specified, the information will be returned in the whatever format is currently used by the sink. This information can be retrieve from caps associated with the buffer.

#### Parameters

self | a GESPipeline in `GST_STATE_PLAYING` or `GST_STATE_PAUSED` |
caps | caps specifying current format. Use `GST_CAPS_ANY` for native size. | [transfer none]

#### Returns

a GstSample or `NULL`.

[transfer full]

### ges_pipeline_get_thumbnail_rgb24 ()

    GstSample *
    ges_pipeline_get_thumbnail_rgb24 (GESPipeline *self,
                                      gint width,
                                      gint height);

A convenience method for `ges_pipeline_get_thumbnail` which returns a buffer in 24-bit RGB, optionally scaled to the specified width and height. If -1 is specified for either dimension, it will be left at native size. You can retreive this information from the caps associated with the buffer.

The caller is responsible for unreffing the returned sample with gst_sample_unref.

#### Parameters

self | a GESPipeline in `GST_STATE_PLAYING` or `GST_STATE_PAUSED` |
width | the requested width or -1 for native size |
height | the requested height or -1 for native size |

#### Returns

a GstSample or `NULL`.

[transfer full]

### ges_pipeline_save_thumbnail ()

    gboolean
    ges_pipeline_save_thumbnail (GESPipeline *self,
                                 int width,
                                 int height,
                                 const gchar *format,
                                 const gchar *location,
                                 GError **error);

Saves the current frame to the specified `location` .

#### Parameters

self | a GESPipeline in `GST_STATE_PLAYING` or `GST_STATE_PAUSED` |
width | the requested width or -1 for native size |
height | the requested height or -1 for native size |
format | a string specifying the desired mime type (for example, image/jpeg) |
location | the path to save the thumbnail |
error | An error to be set in case something wrong happens or `NULL`. | [out][allow-none][transfer full]

#### Returns

`TRUE` if the thumbnail was properly save, else `FALSE`.

## Types and Values

### GESPipeline

    typedef struct _GESPipeline GESPipeline;

## Property Details

### The `“audio-filter”` property

      “audio-filter”             GstElement *

the audio filter(s) to apply, if possible.

Flags: Read / Write

### The `“audio-sink”` property

      “audio-sink”               GstElement *

Audio sink for the preview.

Flags: Read / Write

### The `“mode”` property

      “mode”                     GESPipelineFlags

Pipeline mode. See `ges_pipeline_set_mode()` for more info.

Flags: Read / Write

Default value: GES_PIPELINE_MODE_PREVIEW_AUDIO | GES_PIPELINE_MODE_PREVIEW_VIDEO

### The `“timeline”` property

      “timeline”                 GESTimeline *

Timeline to use in this pipeline. See also `ges_pipeline_set_timeline()` for more info.

Flags: Read / Write

### The `“video-filter”` property

      “video-filter”             GstElement *

the Video filter(s) to apply, if possible.

Flags: Read / Write

### The `“video-sink”` property

      “video-sink”               GstElement *

Video sink for the preview.

Flags: Read / Write