static void
gst_gdk_pixbuf_overlay_update_composition (GstGdkPixbufOverlay * overlay)
{
GstVideoOverlayComposition *comp;
GstVideoOverlayRectangle *rect;
GstVideoMeta *overlay_meta;
gint x, y, width, height;
gint video_width =
GST_VIDEO_INFO_WIDTH (&GST_VIDEO_FILTER (overlay)->in_info);
gint video_height =
GST_VIDEO_INFO_HEIGHT (&GST_VIDEO_FILTER (overlay)->in_info);
if (overlay->comp) {
gst_video_overlay_composition_unref (overlay->comp);
overlay->comp = NULL;
}
if (overlay->alpha == 0.0 || overlay->pixels == NULL)
return;
overlay_meta = gst_buffer_get_video_meta (overlay->pixels);
x = overlay->offset_x < 0 ?
video_width + overlay->offset_x - overlay_meta->width +
(overlay->relative_x * overlay_meta->width) :
overlay->offset_x + (overlay->relative_x * overlay_meta->width);
y = overlay->offset_y < 0 ?
video_height + overlay->offset_y - overlay_meta->height +
(overlay->relative_y * overlay_meta->height) :
overlay->offset_y + (overlay->relative_y * overlay_meta->height);
width = overlay->overlay_width;
if (width == 0)
width = overlay_meta->width;
height = overlay->overlay_height;
if (height == 0)
height = overlay_meta->height;
GST_DEBUG_OBJECT (overlay, "overlay image dimensions: %d x %d, alpha=%.2f",
overlay_meta->width, overlay_meta->height, overlay->alpha);
GST_DEBUG_OBJECT (overlay, "properties: x,y: %d,%d (%g%%,%g%%) - WxH: %dx%d",
overlay->offset_x, overlay->offset_y,
overlay->relative_x * 100.0, overlay->relative_y * 100.0,
overlay->overlay_height, overlay->overlay_width);
GST_DEBUG_OBJECT (overlay, "overlay rendered: %d x %d @ %d,%d (onto %d x %d)",
width, height, x, y, video_width, video_height);
rect = gst_video_overlay_rectangle_new_raw (overlay->pixels,
x, y, width, height, GST_VIDEO_OVERLAY_FORMAT_FLAG_NONE);
if (overlay->alpha != 1.0)
gst_video_overlay_rectangle_set_global_alpha (rect, overlay->alpha);
comp = gst_video_overlay_composition_new (rect);
gst_video_overlay_rectangle_unref (rect);
overlay->comp = comp;
}
static void
gst_gdk_pixbuf_overlay_update_composition (GstGdkPixbufOverlay * overlay)
{
GstVideoOverlayComposition *comp;
GstVideoOverlayRectangle *rect;
gint x, y, width, height;
if (overlay->comp) {
gst_video_overlay_composition_unref (overlay->comp);
overlay->comp = NULL;
}
if (overlay->alpha == 0.0)
return;
x = overlay->offset_x + (overlay->relative_x * overlay->pixels_width);
y = overlay->offset_y + (overlay->relative_y * overlay->pixels_height);
/* FIXME: this should work, but seems to crash */
if (x < 0)
x = 0;
if (y < 0)
y = 0;
width = overlay->overlay_width;
if (width == 0)
width = overlay->pixels_width;
height = overlay->overlay_height;
if (height == 0)
height = overlay->pixels_height;
GST_DEBUG_OBJECT (overlay, "overlay image dimensions: %d x %d, alpha=%.2f",
overlay->pixels_width, overlay->pixels_height, overlay->alpha);
GST_DEBUG_OBJECT (overlay, "properties: x,y: %d,%d (%g%%,%g%%) - WxH: %dx%d",
overlay->offset_x, overlay->offset_y,
overlay->relative_x * 100.0, overlay->relative_y * 100.0,
overlay->overlay_height, overlay->overlay_width);
GST_DEBUG_OBJECT (overlay, "overlay rendered: %d x %d @ %d,%d (onto %d x %d)",
width, height, x, y, overlay->width, overlay->height);
rect = gst_video_overlay_rectangle_new_argb (overlay->pixels,
overlay->pixels_width, overlay->pixels_height, overlay->pixels_stride,
x, y, width, height, GST_VIDEO_OVERLAY_FORMAT_FLAG_NONE);
if (overlay->alpha != 1.0)
gst_video_overlay_rectangle_set_global_alpha (rect, overlay->alpha);
comp = gst_video_overlay_composition_new (rect);
gst_video_overlay_rectangle_unref (rect);
overlay->comp = comp;
}
static void
gst_video_overlay_composition_finalize (GstMiniObject * mini_obj)
{
GstVideoOverlayComposition *comp = (GstVideoOverlayComposition *) mini_obj;
guint num;
num = comp->num_rectangles;
while (num > 0) {
gst_video_overlay_rectangle_unref (comp->rectangles[num - 1]);
--num;
}
g_free (comp->rectangles);
comp->rectangles = NULL;
comp->num_rectangles = 0;
/* not chaining up to GstMiniObject's finalize for now, we know it's empty */
}
static GstPadProbeReturn
buffer_cb (GstPad * pad, GstPadProbeInfo * info, gpointer user_data)
{
GstVideoOverlayRectangle *rect;
GstVideoOverlayComposition *comp;
GstVideoFrame frame;
GstVideoMeta *vmeta;
GstVideoInfo vinfo;
GstCaps *caps;
gint x, y;
caps = gst_pad_get_current_caps (pad);
gst_video_info_from_caps (&vinfo, caps);
gst_caps_unref (caps);
info->data = gst_buffer_make_writable (info->data);
vmeta = gst_buffer_get_video_meta (logo_buf);
calculate_position (&x, &y, vmeta->width, vmeta->height, ++count);
GST_LOG ("%3d, %3d", x, y);
rect = gst_video_overlay_rectangle_new_raw (logo_buf, x, y,
vmeta->width, vmeta->height, GST_VIDEO_OVERLAY_FORMAT_FLAG_NONE);
comp = gst_video_overlay_composition_new (rect);
gst_video_overlay_rectangle_unref (rect);
gst_video_frame_map (&frame, &vinfo, info->data, GST_MAP_READWRITE);
if (!gst_video_overlay_composition_blend (comp, &frame))
g_warning ("Error blending overlay at position (%d,%d)", x, y);
gst_video_frame_unmap (&frame);
gst_video_overlay_composition_unref (comp);
return GST_PAD_PROBE_OK;
}
static GstVideoOverlayComposition *
gst_dvbsub_overlay_subs_to_comp (GstDVBSubOverlay * overlay,
DVBSubtitles * subs)
{
GstVideoOverlayComposition *comp = NULL;
GstVideoOverlayRectangle *rect;
gint width, height, dw, dh, wx, wy;
gint i;
g_return_val_if_fail (subs != NULL && subs->num_rects > 0, NULL);
width = GST_VIDEO_INFO_WIDTH (&overlay->info);
height = GST_VIDEO_INFO_HEIGHT (&overlay->info);
dw = subs->display_def.display_width;
dh = subs->display_def.display_height;
GST_LOG_OBJECT (overlay,
"converting %d rectangles for display %dx%d -> video %dx%d",
subs->num_rects, dw, dh, width, height);
if (subs->display_def.window_flag) {
wx = subs->display_def.window_x;
wy = subs->display_def.window_y;
GST_LOG_OBJECT (overlay, "display window %dx%d @ (%d, %d)",
subs->display_def.window_width, subs->display_def.window_height,
wx, wy);
} else {
wx = 0;
wy = 0;
}
for (i = 0; i < subs->num_rects; i++) {
DVBSubtitleRect *srect = &subs->rects[i];
GstBuffer *buf;
gint w, h;
guint8 *in_data;
guint32 *palette, *data;
gint rx, ry, rw, rh, stride;
gint k, l;
GstMapInfo map;
GST_LOG_OBJECT (overlay, "rectangle %d: %dx%d @ (%d, %d)", i,
srect->w, srect->h, srect->x, srect->y);
w = srect->w;
h = srect->h;
buf = gst_buffer_new_and_alloc (w * h * 4);
gst_buffer_map (buf, &map, GST_MAP_WRITE);
data = (guint32 *) map.data;
in_data = srect->pict.data;
palette = srect->pict.palette;
stride = srect->pict.rowstride;
for (k = 0; k < h; k++) {
for (l = 0; l < w; l++) {
guint32 ayuv;
ayuv = palette[*in_data];
GST_WRITE_UINT32_BE (data, ayuv);
in_data++;
data++;
}
in_data += stride - w;
}
gst_buffer_unmap (buf, &map);
/* this is assuming the subtitle rectangle coordinates are relative
* to the window (if there is one) within a display of specified dimension.
* Coordinate wrt the latter is then scaled to the actual dimension of
* the video we are dealing with here. */
rx = gst_util_uint64_scale (wx + srect->x, width, dw);
ry = gst_util_uint64_scale (wy + srect->y, height, dh);
rw = gst_util_uint64_scale (srect->w, width, dw);
rh = gst_util_uint64_scale (srect->h, height, dh);
GST_LOG_OBJECT (overlay, "rectangle %d rendered: %dx%d @ (%d, %d)", i,
rw, rh, rx, ry);
gst_buffer_add_video_meta (buf, GST_VIDEO_FRAME_FLAG_NONE,
GST_VIDEO_OVERLAY_COMPOSITION_FORMAT_YUV, w, h);
rect = gst_video_overlay_rectangle_new_raw (buf, rx, ry, rw, rh, 0);
g_assert (rect);
if (comp) {
gst_video_overlay_composition_add_rectangle (comp, rect);
} else {
comp = gst_video_overlay_composition_new (rect);
}
gst_video_overlay_rectangle_unref (rect);
gst_buffer_unref (buf);
}
return comp;
}
