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-rw-r--r--gst/videocrop/gstvideocrop.c218
1 files changed, 111 insertions, 107 deletions
diff --git a/gst/videocrop/gstvideocrop.c b/gst/videocrop/gstvideocrop.c
index 6a90b5b3..f13610bc 100644
--- a/gst/videocrop/gstvideocrop.c
+++ b/gst/videocrop/gstvideocrop.c
@@ -39,39 +39,42 @@
typedef struct _GstVideoCrop GstVideoCrop;
typedef struct _GstVideoCropClass GstVideoCropClass;
-struct _GstVideoCrop {
- GstElement element;
+struct _GstVideoCrop
+{
+ GstElement element;
/* pads */
- GstPad *sinkpad;
- GstPad *srcpad;
+ GstPad *sinkpad;
+ GstPad *srcpad;
/* caps */
- gint width, height;
- gdouble fps;
- gint crop_left, crop_right, crop_top, crop_bottom;
+ gint width, height;
+ gdouble fps;
+ gint crop_left, crop_right, crop_top, crop_bottom;
};
-struct _GstVideoCropClass {
+struct _GstVideoCropClass
+{
GstElementClass parent_class;
};
/* elementfactory information */
-static GstElementDetails gst_video_crop_details = GST_ELEMENT_DETAILS (
- "video crop filter",
- "Filter/Effect/Video",
- "Crops video into a user defined region",
- "Wim Taymans <wim.taymans@chello.be>"
-);
+static GstElementDetails gst_video_crop_details =
+GST_ELEMENT_DETAILS ("video crop filter",
+ "Filter/Effect/Video",
+ "Crops video into a user defined region",
+ "Wim Taymans <wim.taymans@chello.be>");
/* VideoCrop signals and args */
-enum {
+enum
+{
/* FILL ME */
LAST_SIGNAL
};
-enum {
+enum
+{
ARG_0,
ARG_LEFT,
ARG_RIGHT,
@@ -81,40 +84,38 @@ enum {
};
static GstStaticPadTemplate gst_video_crop_src_template =
-GST_STATIC_PAD_TEMPLATE (
- "src",
- GST_PAD_SRC,
- GST_PAD_ALWAYS,
- GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420"))
-);
+GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420"))
+ );
static GstStaticPadTemplate gst_video_crop_sink_template =
-GST_STATIC_PAD_TEMPLATE (
- "sink",
- GST_PAD_SINK,
- GST_PAD_ALWAYS,
- GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420"))
-);
+GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420"))
+ );
-static void gst_video_crop_base_init (gpointer g_class);
-static void gst_video_crop_class_init (GstVideoCropClass *klass);
-static void gst_video_crop_init (GstVideoCrop *video_crop);
+static void gst_video_crop_base_init (gpointer g_class);
+static void gst_video_crop_class_init (GstVideoCropClass * klass);
+static void gst_video_crop_init (GstVideoCrop * video_crop);
-static void gst_video_crop_set_property (GObject *object, guint prop_id,
- const GValue *value, GParamSpec *pspec);
-static void gst_video_crop_get_property (GObject *object, guint prop_id,
- GValue *value, GParamSpec *pspec);
+static void gst_video_crop_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_video_crop_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
static GstPadLinkReturn
- gst_video_crop_sink_link (GstPad *pad, const GstCaps *caps);
-static void gst_video_crop_chain (GstPad *pad, GstData *_data);
+gst_video_crop_sink_link (GstPad * pad, const GstCaps * caps);
+static void gst_video_crop_chain (GstPad * pad, GstData * _data);
-static GstElementStateReturn
- gst_video_crop_change_state (GstElement *element);
+static GstElementStateReturn gst_video_crop_change_state (GstElement * element);
static GstElementClass *parent_class = NULL;
+
/* static guint gst_video_crop_signals[LAST_SIGNAL] = { 0 }; */
GType
@@ -124,17 +125,19 @@ gst_video_crop_get_type (void)
if (!video_crop_type) {
static const GTypeInfo video_crop_info = {
- sizeof(GstVideoCropClass),
+ sizeof (GstVideoCropClass),
gst_video_crop_base_init,
NULL,
- (GClassInitFunc)gst_video_crop_class_init,
+ (GClassInitFunc) gst_video_crop_class_init,
NULL,
NULL,
- sizeof(GstVideoCrop),
+ sizeof (GstVideoCrop),
0,
- (GInstanceInitFunc)gst_video_crop_init,
+ (GInstanceInitFunc) gst_video_crop_init,
};
- video_crop_type = g_type_register_static(GST_TYPE_ELEMENT, "GstVideoCrop", &video_crop_info, 0);
+ video_crop_type =
+ g_type_register_static (GST_TYPE_ELEMENT, "GstVideoCrop",
+ &video_crop_info, 0);
}
return video_crop_type;
}
@@ -146,34 +149,34 @@ gst_video_crop_base_init (gpointer g_class)
gst_element_class_set_details (element_class, &gst_video_crop_details);
- gst_element_class_add_pad_template (element_class,
+ gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_video_crop_sink_template));
- gst_element_class_add_pad_template (element_class,
+ gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_video_crop_src_template));
}
static void
-gst_video_crop_class_init (GstVideoCropClass *klass)
+gst_video_crop_class_init (GstVideoCropClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
- gobject_class = (GObjectClass*) klass;
- gstelement_class = (GstElementClass*) klass;
+ gobject_class = (GObjectClass *) klass;
+ gstelement_class = (GstElementClass *) klass;
- parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
+ parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LEFT,
- g_param_spec_int ("left", "Left", "Pixels to crop at left",
- 0, G_MAXINT, 0, G_PARAM_READWRITE));
+ g_param_spec_int ("left", "Left", "Pixels to crop at left",
+ 0, G_MAXINT, 0, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_RIGHT,
- g_param_spec_int ("right", "Right", "Pixels to crop at right",
- 0, G_MAXINT, 0, G_PARAM_READWRITE));
+ g_param_spec_int ("right", "Right", "Pixels to crop at right",
+ 0, G_MAXINT, 0, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_TOP,
- g_param_spec_int ("top", "Top", "Pixels to crop at top",
- 0, G_MAXINT, 0, G_PARAM_READWRITE));
+ g_param_spec_int ("top", "Top", "Pixels to crop at top",
+ 0, G_MAXINT, 0, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_BOTTOM,
- g_param_spec_int ("bottom", "Bottom", "Pixels to crop at bottom",
- 0, G_MAXINT, 0, G_PARAM_READWRITE));
+ g_param_spec_int ("bottom", "Bottom", "Pixels to crop at bottom",
+ 0, G_MAXINT, 0, G_PARAM_READWRITE));
gobject_class->set_property = gst_video_crop_set_property;
gobject_class->get_property = gst_video_crop_get_property;
@@ -182,17 +185,19 @@ gst_video_crop_class_init (GstVideoCropClass *klass)
}
static void
-gst_video_crop_init (GstVideoCrop *video_crop)
+gst_video_crop_init (GstVideoCrop * video_crop)
{
/* create the sink and src pads */
- video_crop->sinkpad = gst_pad_new_from_template(
- gst_static_pad_template_get (&gst_video_crop_sink_template), "sink");
+ video_crop->sinkpad =
+ gst_pad_new_from_template (gst_static_pad_template_get
+ (&gst_video_crop_sink_template), "sink");
gst_element_add_pad (GST_ELEMENT (video_crop), video_crop->sinkpad);
gst_pad_set_chain_function (video_crop->sinkpad, gst_video_crop_chain);
gst_pad_set_link_function (video_crop->sinkpad, gst_video_crop_sink_link);
- video_crop->srcpad = gst_pad_new_from_template(
- gst_static_pad_template_get (&gst_video_crop_src_template), "src");
+ video_crop->srcpad =
+ gst_pad_new_from_template (gst_static_pad_template_get
+ (&gst_video_crop_src_template), "src");
gst_element_add_pad (GST_ELEMENT (video_crop), video_crop->srcpad);
video_crop->crop_right = 0;
@@ -205,13 +210,14 @@ gst_video_crop_init (GstVideoCrop *video_crop)
/* do we need this function? */
static void
-gst_video_crop_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
+gst_video_crop_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
{
GstVideoCrop *video_crop;
-
+
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_VIDEO_CROP (object));
-
+
video_crop = GST_VIDEO_CROP (object);
switch (prop_id) {
@@ -233,13 +239,14 @@ gst_video_crop_set_property (GObject *object, guint prop_id, const GValue *value
}
}
static void
-gst_video_crop_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
+gst_video_crop_get_property (GObject * object, guint prop_id, GValue * value,
+ GParamSpec * pspec)
{
GstVideoCrop *video_crop;
-
+
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_VIDEO_CROP (object));
-
+
video_crop = GST_VIDEO_CROP (object);
switch (prop_id) {
@@ -262,7 +269,7 @@ gst_video_crop_get_property (GObject *object, guint prop_id, GValue *value, GPar
}
static GstPadLinkReturn
-gst_video_crop_sink_link (GstPad *pad, const GstCaps *caps)
+gst_video_crop_sink_link (GstPad * pad, const GstCaps * caps)
{
GstVideoCrop *video_crop;
GstStructure *structure;
@@ -271,7 +278,7 @@ gst_video_crop_sink_link (GstPad *pad, const GstCaps *caps)
video_crop = GST_VIDEO_CROP (gst_pad_get_parent (pad));
structure = gst_caps_get_structure (caps, 0);
- ret = gst_structure_get_int (structure, "width", &video_crop->width);
+ ret = gst_structure_get_int (structure, "width", &video_crop->width);
ret &= gst_structure_get_int (structure, "height", &video_crop->height);
ret &= gst_structure_get_double (structure, "framerate", &video_crop->fps);
@@ -289,28 +296,30 @@ gst_video_crop_sink_link (GstPad *pad, const GstCaps *caps)
#define GST_VIDEO_I420_V_ROWSTRIDE(width) ((width)/2)
static void
-gst_video_crop_i420 (GstVideoCrop *video_crop, GstBuffer *src_buffer, GstBuffer *dest_buffer)
+gst_video_crop_i420 (GstVideoCrop * video_crop, GstBuffer * src_buffer,
+ GstBuffer * dest_buffer)
{
guint8 *src;
guint8 *dest;
guint8 *srcY, *srcU, *srcV;
guint8 *destY, *destU, *destV;
gint out_width = video_crop->width -
- (video_crop->crop_left + video_crop->crop_right);
+ (video_crop->crop_left + video_crop->crop_right);
gint out_height = video_crop->height -
- (video_crop->crop_top + video_crop->crop_bottom);
+ (video_crop->crop_top + video_crop->crop_bottom);
gint src_stride;
gint j;
src = GST_BUFFER_DATA (src_buffer);
dest = GST_BUFFER_DATA (dest_buffer);
- g_return_if_fail(GST_BUFFER_SIZE (dest_buffer) == GST_VIDEO_I420_SIZE(out_width,out_height));
+ g_return_if_fail (GST_BUFFER_SIZE (dest_buffer) ==
+ GST_VIDEO_I420_SIZE (out_width, out_height));
- srcY = src + GST_VIDEO_I420_Y_OFFSET(video_crop->width, video_crop->height);
- destY = dest + GST_VIDEO_I420_Y_OFFSET(out_width, out_height);
+ srcY = src + GST_VIDEO_I420_Y_OFFSET (video_crop->width, video_crop->height);
+ destY = dest + GST_VIDEO_I420_Y_OFFSET (out_width, out_height);
- src_stride = GST_VIDEO_I420_Y_ROWSTRIDE(video_crop->width);
+ src_stride = GST_VIDEO_I420_Y_ROWSTRIDE (video_crop->width);
/* copy Y plane first */
@@ -321,32 +330,32 @@ gst_video_crop_i420 (GstVideoCrop *video_crop, GstBuffer *src_buffer, GstBuffer
destY += out_width;
}
- src_stride = GST_VIDEO_I420_U_ROWSTRIDE(video_crop->width);
+ src_stride = GST_VIDEO_I420_U_ROWSTRIDE (video_crop->width);
- destU = dest + GST_VIDEO_I420_U_OFFSET(out_width, out_height);
- destV = dest + GST_VIDEO_I420_V_OFFSET(out_width, out_height);
+ destU = dest + GST_VIDEO_I420_U_OFFSET (out_width, out_height);
+ destV = dest + GST_VIDEO_I420_V_OFFSET (out_width, out_height);
- srcU = src + GST_VIDEO_I420_U_OFFSET(video_crop->width, video_crop->height);
- srcV = src + GST_VIDEO_I420_V_OFFSET(video_crop->width, video_crop->height);
+ srcU = src + GST_VIDEO_I420_U_OFFSET (video_crop->width, video_crop->height);
+ srcV = src + GST_VIDEO_I420_V_OFFSET (video_crop->width, video_crop->height);
- srcU += src_stride * (video_crop->crop_top/2) + (video_crop->crop_left/2);
- srcV += src_stride * (video_crop->crop_top/2) + (video_crop->crop_left/2);
+ srcU += src_stride * (video_crop->crop_top / 2) + (video_crop->crop_left / 2);
+ srcV += src_stride * (video_crop->crop_top / 2) + (video_crop->crop_left / 2);
- for (j = 0; j < out_height/2; j++) {
+ for (j = 0; j < out_height / 2; j++) {
/* copy U plane */
- memcpy (destU, srcU, out_width/2);
+ memcpy (destU, srcU, out_width / 2);
srcU += src_stride;
- destU += out_width/2;
+ destU += out_width / 2;
/* copy V plane */
- memcpy (destV, srcV, out_width/2);
+ memcpy (destV, srcV, out_width / 2);
srcV += src_stride;
- destV += out_width/2;
+ destV += out_width / 2;
}
}
static void
-gst_video_crop_chain (GstPad *pad, GstData *_data)
+gst_video_crop_chain (GstPad * pad, GstData * _data)
{
GstBuffer *buffer = GST_BUFFER (_data);
GstVideoCrop *video_crop;
@@ -367,9 +376,9 @@ gst_video_crop_chain (GstPad *pad, GstData *_data)
}
new_width = video_crop->width -
- (video_crop->crop_left + video_crop->crop_right);
+ (video_crop->crop_left + video_crop->crop_right);
new_height = video_crop->height -
- (video_crop->crop_top + video_crop->crop_bottom);
+ (video_crop->crop_top + video_crop->crop_bottom);
outbuf = gst_buffer_new_and_alloc ((new_width * new_height * 3) / 2);
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buffer);
@@ -381,7 +390,7 @@ gst_video_crop_chain (GstPad *pad, GstData *_data)
}
static GstElementStateReturn
-gst_video_crop_change_state (GstElement *element)
+gst_video_crop_change_state (GstElement * element)
{
GstVideoCrop *video_crop;
@@ -408,19 +417,14 @@ gst_video_crop_change_state (GstElement *element)
}
static gboolean
-plugin_init (GstPlugin *plugin)
+plugin_init (GstPlugin * plugin)
{
- return gst_element_register (plugin, "videocrop", GST_RANK_PRIMARY, GST_TYPE_VIDEO_CROP);
+ return gst_element_register (plugin, "videocrop", GST_RANK_PRIMARY,
+ GST_TYPE_VIDEO_CROP);
}
-GST_PLUGIN_DEFINE (
- GST_VERSION_MAJOR,
- GST_VERSION_MINOR,
- "videocrop",
- "Crops video into a user defined region",
- plugin_init,
- VERSION,
- GST_LICENSE,
- GST_PACKAGE,
- GST_ORIGIN
-)
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "videocrop",
+ "Crops video into a user defined region",
+ plugin_init, VERSION, GST_LICENSE, GST_PACKAGE, GST_ORIGIN)
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-04 15:57:47 +0000