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camerabin2: Add audio-filter property

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Adds a property to add a custom GstElement to the audio
branch of the pipeline. This allows the user to do custom audio
processing/analysis when recording videos.
This commit is contained in:
Thiago Santos 2011-08-11 18:59:07 -03:00
parent 008fa0770b
commit 19e5736acd
2 changed files with 29 additions and 1 deletions
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28
gst/camerabin2/gstcamerabin2.c
View file

@ -221,7 +221,8 @@ enum
PROP_MAX_ZOOM,
PROP_IMAGE_ENCODING_PROFILE,
PROP_IDLE,
PROP_FLAGS
PROP_FLAGS,
PROP_AUDIO_FILTER
};
enum
@ -545,9 +546,13 @@ gst_camera_bin_dispose (GObject * object)
gst_object_unref (camerabin->image_filter);
if (camerabin->viewfinder_filter)
gst_object_unref (camerabin->viewfinder_filter);
if (camerabin->audio_filter)
gst_object_unref (camerabin->audio_filter);
if (camerabin->user_video_filter)
gst_object_unref (camerabin->user_video_filter);
if (camerabin->user_audio_filter)
gst_object_unref (camerabin->user_audio_filter);
if (camerabin->user_image_filter)
gst_object_unref (camerabin->user_image_filter);
if (camerabin->user_viewfinder_filter)
@ -722,6 +727,12 @@ gst_camera_bin_class_init (GstCameraBin2Class * klass)
" (Should be set on NULL state)",
GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_AUDIO_FILTER,
g_param_spec_object ("audio-filter", "Audio filter",
"The element that will process captured audio buffers when recording"
". (Should be set on NULL state)",
GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_PREVIEW_FILTER,
g_param_spec_object ("preview-filter", "Preview filter",
"The element that will process preview buffers."
@ -1530,6 +1541,11 @@ gst_camera_bin_create_elements (GstCameraBin2 * camera)
gst_element_link_many (camera->audio_src, camera->audio_volume,
camera->audio_capsfilter, NULL);
}
if (has_audio) {
gst_camera_bin_check_and_replace_filter (camera, &camera->audio_filter,
camera->user_audio_filter, camera->audio_src, camera->audio_volume,
"src");
}
if ((profile_switched && has_audio) || new_audio_src) {
if (GST_PAD_LINK_FAILED (gst_camera_bin_link_encodebin (camera,
@ -1843,6 +1859,12 @@ gst_camera_bin_set_property (GObject * object, guint prop_id,
g_object_set (camera->src, "preview-filter", camera->preview_filter,
NULL);
break;
case PROP_AUDIO_FILTER:
if (camera->user_audio_filter)
g_object_unref (camera->user_audio_filter);
camera->user_audio_filter = g_value_dup_object (value);
break;
case PROP_VIEWFINDER_SINK:
g_object_set (camera->viewfinderbin, "video-sink",
g_value_get_object (value), NULL);
@ -1999,6 +2021,10 @@ gst_camera_bin_get_property (GObject * object, guint prop_id,
if (camera->user_viewfinder_filter)
g_value_set_object (value, camera->user_viewfinder_filter);
break;
case PROP_AUDIO_FILTER:
if (camera->user_audio_filter)
g_value_set_object (value, camera->user_audio_filter);
break;
case PROP_PREVIEW_FILTER:
if (camera->preview_filter)
g_value_set_object (value, camera->preview_filter);

2
gst/camerabin2/gstcamerabin2.h
View file

@ -68,9 +68,11 @@ struct _GstCameraBin2
GstElement *video_filter;
GstElement *image_filter;
GstElement *viewfinder_filter;
GstElement *audio_filter;
GstElement *user_video_filter;
GstElement *user_image_filter;
GstElement *user_viewfinder_filter;
GstElement *user_audio_filter;
GstElement *audio_src;
GstElement *user_audio_src;