/* caps */
gint width, height;
- gdouble fps;
gint crop_left, crop_right, crop_top, crop_bottom;
+ gboolean renegotiate_src_caps;
};
struct _GstVideoCropClass
"Wim Taymans <wim.taymans@chello.be>");
-/* VideoCrop signals and args */
-enum
-{
- /* FILL ME */
- LAST_SIGNAL
-};
-
+/* VideoCrop args */
enum
{
ARG_0,
static void gst_video_crop_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
+static GstCaps *gst_video_crop_getcaps (GstPad * pad);
+
static GstPadLinkReturn
-gst_video_crop_sink_link (GstPad * pad, const GstCaps * caps);
+gst_video_crop_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);
(&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);
+ gst_pad_set_getcaps_function (video_crop->sinkpad, gst_video_crop_getcaps);
+ gst_pad_set_link_function (video_crop->sinkpad, gst_video_crop_link);
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);
+ gst_pad_set_getcaps_function (video_crop->srcpad, gst_video_crop_getcaps);
+ gst_pad_set_link_function (video_crop->srcpad, gst_video_crop_link);
video_crop->crop_right = 0;
video_crop->crop_left = 0;
video_crop->crop_top = 0;
video_crop->crop_bottom = 0;
-
- GST_FLAG_SET (video_crop, GST_ELEMENT_EVENT_AWARE);
}
/* do we need this function? */
{
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);
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
+
+ if (gst_pad_is_negotiated (video_crop->srcpad))
+ video_crop->renegotiate_src_caps = TRUE;
+}
+
+static void
+gst_video_crop_add_to_struct_val (GstStructure * s, const gchar * field_name,
+ gint addval)
+{
+ const GValue *val;
+
+ val = gst_structure_get_value (s, field_name);
+
+ if (G_VALUE_HOLDS_INT (val)) {
+ gint ival = g_value_get_int (val);
+
+ gst_structure_set (s, field_name, G_TYPE_INT, ival + addval, NULL);
+ return;
+ }
+
+ if (GST_VALUE_HOLDS_INT_RANGE (val)) {
+ gint min = gst_value_get_int_range_min (val);
+ gint max = gst_value_get_int_range_max (val);
+
+ gst_structure_set (s, field_name, GST_TYPE_INT_RANGE, min + addval,
+ max + addval, NULL);
+ return;
+ }
+
+ if (GST_VALUE_HOLDS_LIST (val)) {
+ GValue newlist = { 0, };
+ gint i;
+
+ g_value_init (&newlist, GST_TYPE_LIST);
+ for (i = 0; i < gst_value_list_get_size (val); ++i) {
+ GValue newval = { 0, };
+ g_value_init (&newval, G_VALUE_TYPE (val));
+ g_value_copy (val, &newval);
+ if (G_VALUE_HOLDS_INT (val)) {
+ gint ival = g_value_get_int (val);
+
+ g_value_set_int (&newval, ival + addval);
+ } else if (GST_VALUE_HOLDS_INT_RANGE (val)) {
+ gint min = gst_value_get_int_range_min (val);
+ gint max = gst_value_get_int_range_max (val);
+
+ gst_value_set_int_range (&newval, min + addval, max + addval);
+ } else {
+ g_return_if_reached ();
+ }
+ gst_value_list_append_value (&newlist, &newval);
+ g_value_unset (&newval);
+ }
+ gst_structure_set_value (s, field_name, &newlist);
+ g_value_unset (&newlist);
+ return;
+ }
+
+ g_return_if_reached ();
+}
+
+static GstCaps *
+gst_video_crop_getcaps (GstPad * pad)
+{
+ GstVideoCrop *vc;
+ GstCaps *othercaps, *caps;
+ GstPad *otherpad;
+ gint i, delta_w, delta_h;
+
+ vc = GST_VIDEO_CROP (gst_pad_get_parent (pad));
+ otherpad = (pad == vc->srcpad) ? vc->sinkpad : vc->srcpad;
+ othercaps = gst_pad_get_allowed_caps (otherpad);
+
+ GST_DEBUG_OBJECT (pad, "othercaps of otherpad %s:%s are: %" GST_PTR_FORMAT,
+ GST_DEBUG_PAD_NAME (otherpad), othercaps);
+
+ if (pad == vc->srcpad) {
+ delta_w = 0 - vc->crop_left - vc->crop_right;
+ delta_h = 0 - vc->crop_top - vc->crop_bottom;
+ } else {
+ delta_w = vc->crop_left + vc->crop_right;
+ delta_h = vc->crop_top + vc->crop_bottom;
+ }
+
+ for (i = 0; i < gst_caps_get_size (othercaps); i++) {
+ GstStructure *s = gst_caps_get_structure (othercaps, i);
+
+ gst_video_crop_add_to_struct_val (s, "width", delta_w);
+ gst_video_crop_add_to_struct_val (s, "height", delta_h);
+ }
+
+ caps = gst_caps_intersect (othercaps, gst_pad_get_pad_template_caps (pad));
+ gst_caps_free (othercaps);
+
+ GST_DEBUG_OBJECT (pad, "returning caps: %" GST_PTR_FORMAT, caps);
+ return caps;
}
static GstPadLinkReturn
-gst_video_crop_sink_link (GstPad * pad, const GstCaps * caps)
+gst_video_crop_link (GstPad * pad, const GstCaps * caps)
{
- GstVideoCrop *video_crop;
+ GstPadLinkReturn ret;
GstStructure *structure;
- gboolean ret;
+ GstVideoCrop *vc;
+ GstCaps *newcaps;
+ GstPad *otherpad;
+ gint w, h, other_w, other_h;
+
+ vc = GST_VIDEO_CROP (gst_pad_get_parent (pad));
- video_crop = GST_VIDEO_CROP (gst_pad_get_parent (pad));
structure = gst_caps_get_structure (caps, 0);
+ if (!gst_structure_get_int (structure, "width", &w)
+ || !gst_structure_get_int (structure, "height", &h))
+ return GST_PAD_LINK_DELAYED;
+
+ if (pad == vc->srcpad) {
+ other_w = w + vc->crop_left + vc->crop_right;
+ other_h = h + vc->crop_top + vc->crop_bottom;
+ otherpad = vc->sinkpad;
+ vc->width = other_w;
+ vc->height = other_h;
+ } else {
+ other_w = w - vc->crop_left - vc->crop_right;
+ other_h = h - vc->crop_top - vc->crop_bottom;
+ vc->width = w;
+ vc->height = h;
+ otherpad = vc->srcpad;
+ }
- 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);
+ newcaps = gst_caps_copy (caps);
+
+ gst_caps_set_simple (newcaps,
+ "width", G_TYPE_INT, other_w, "height", G_TYPE_INT, other_h, NULL);
+
+ ret = gst_pad_try_set_caps (otherpad, newcaps);
+ gst_caps_free (newcaps);
+
+ if (ret == GST_PAD_LINK_REFUSED)
+ return GST_PAD_LINK_REFUSED;
return GST_PAD_LINK_OK;
}
-#define GST_VIDEO_I420_SIZE(width,height) ((width)*(height) + ((width)/2)*((height)/2)*2)
+/* these macros are adapted from videotestsrc.c, paint_setup_I420() */
+#define ROUND_UP_2(x) (((x)+1)&~1)
+#define ROUND_UP_4(x) (((x)+3)&~3)
+#define ROUND_UP_8(x) (((x)+7)&~7)
+
+#define GST_VIDEO_I420_Y_ROWSTRIDE(width) (ROUND_UP_4(width))
+#define GST_VIDEO_I420_U_ROWSTRIDE(width) (ROUND_UP_8(width)/2)
+#define GST_VIDEO_I420_V_ROWSTRIDE(width) ((ROUND_UP_8(GST_VIDEO_I420_Y_ROWSTRIDE(width)))/2)
-#define GST_VIDEO_I420_Y_OFFSET(width,height) (0)
-#define GST_VIDEO_I420_U_OFFSET(width,height) ((width)*(height))
-#define GST_VIDEO_I420_V_OFFSET(width,height) ((width)*(height) + ((width/2)*(height/2)))
+#define GST_VIDEO_I420_Y_OFFSET(w,h) (0)
+#define GST_VIDEO_I420_U_OFFSET(w,h) (GST_VIDEO_I420_Y_OFFSET(w,h)+(GST_VIDEO_I420_Y_ROWSTRIDE(w)*ROUND_UP_2(h)))
+#define GST_VIDEO_I420_V_OFFSET(w,h) (GST_VIDEO_I420_U_OFFSET(w,h)+(GST_VIDEO_I420_U_ROWSTRIDE(w)*ROUND_UP_2(h)/2))
-#define GST_VIDEO_I420_Y_ROWSTRIDE(width) (width)
-#define GST_VIDEO_I420_U_ROWSTRIDE(width) ((width)/2)
-#define GST_VIDEO_I420_V_ROWSTRIDE(width) ((width)/2)
+#define GST_VIDEO_I420_SIZE(w,h) (GST_VIDEO_I420_V_OFFSET(w,h)+(GST_VIDEO_I420_V_ROWSTRIDE(w)*ROUND_UP_2(h)/2))
static void
gst_video_crop_i420 (GstVideoCrop * video_crop, GstBuffer * src_buffer,
(video_crop->crop_left + video_crop->crop_right);
gint out_height = video_crop->height -
(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));
-
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);
-
/* copy Y plane first */
-
- srcY += src_stride * video_crop->crop_top + video_crop->crop_left;
+ srcY +=
+ (GST_VIDEO_I420_Y_ROWSTRIDE (video_crop->width) * video_crop->crop_top) +
+ video_crop->crop_left;
for (j = 0; j < out_height; j++) {
memcpy (destY, srcY, out_width);
- srcY += src_stride;
- destY += out_width;
+ srcY += GST_VIDEO_I420_Y_ROWSTRIDE (video_crop->width);
+ destY += GST_VIDEO_I420_Y_ROWSTRIDE (out_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);
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 +=
+ (GST_VIDEO_I420_U_ROWSTRIDE (video_crop->width) * (video_crop->crop_top /
+ 2)) + (video_crop->crop_left / 2);
+ srcV +=
+ (GST_VIDEO_I420_V_ROWSTRIDE (video_crop->width) * (video_crop->crop_top /
+ 2)) + (video_crop->crop_left / 2);
for (j = 0; j < out_height / 2; j++) {
/* copy U plane */
memcpy (destU, srcU, out_width / 2);
- srcU += src_stride;
- destU += out_width / 2;
+ srcU += GST_VIDEO_I420_U_ROWSTRIDE (video_crop->width);
+ destU += GST_VIDEO_I420_U_ROWSTRIDE (out_width);
/* copy V plane */
memcpy (destV, srcV, out_width / 2);
- srcV += src_stride;
- destV += out_width / 2;
+ srcV += GST_VIDEO_I420_V_ROWSTRIDE (video_crop->width);
+ destV += GST_VIDEO_I420_V_ROWSTRIDE (out_width);
}
}
video_crop = GST_VIDEO_CROP (gst_pad_get_parent (pad));
- if (GST_IS_EVENT (buffer)) {
- GstEvent *event = GST_EVENT (buffer);
+ new_width = video_crop->width -
+ (video_crop->crop_left + video_crop->crop_right);
+ new_height = video_crop->height -
+ (video_crop->crop_top + video_crop->crop_bottom);
- switch (GST_EVENT_TYPE (event)) {
- default:
- gst_pad_event_default (pad, event);
- break;
+ if (video_crop->renegotiate_src_caps || !GST_PAD_CAPS (video_crop->srcpad)) {
+ GstCaps *newcaps;
+
+ newcaps = gst_caps_copy (gst_pad_get_negotiated_caps (video_crop->sinkpad));
+
+ gst_caps_set_simple (newcaps,
+ "width", G_TYPE_INT, new_width, "height", G_TYPE_INT, new_height, NULL);
+
+ if (GST_PAD_LINK_FAILED (gst_pad_try_set_caps (video_crop->srcpad,
+ newcaps))) {
+ GST_ELEMENT_ERROR (video_crop, CORE, NEGOTIATION, (NULL), (NULL));
+ gst_caps_free (newcaps);
+ return;
}
+
+ gst_caps_free (newcaps);
+
+ video_crop->renegotiate_src_caps = FALSE;
+ }
+
+ /* passthrough if nothing to do */
+ if (new_width == video_crop->width && new_height == video_crop->height) {
+ gst_pad_push (video_crop->srcpad, GST_DATA (buffer));
return;
}
- new_width = video_crop->width -
- (video_crop->crop_left + video_crop->crop_right);
- new_height = video_crop->height -
- (video_crop->crop_top + video_crop->crop_bottom);
+ g_return_if_fail (GST_BUFFER_SIZE (buffer) >=
+ GST_VIDEO_I420_SIZE (video_crop->width, video_crop->height));
- outbuf = gst_buffer_new_and_alloc ((new_width * new_height * 3) / 2);
+ outbuf = gst_pad_alloc_buffer (video_crop->srcpad, GST_BUFFER_OFFSET (buffer),
+ GST_VIDEO_I420_SIZE (new_width, new_height));
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buffer);
gst_video_crop_i420 (video_crop, buffer, outbuf);
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_NULL_TO_READY:
+ video_crop->renegotiate_src_caps = TRUE;
break;
case GST_STATE_READY_TO_PAUSED:
break;
break;
}
- parent_class->change_state (element);
+ if (parent_class->change_state != NULL)
+ return parent_class->change_state (element);
return GST_STATE_SUCCESS;
}
projects / platform / upstream / gstreamer.git / commitdiff