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Diffstat (limited to 'ext/pango/gsttextrender.c')
| -rw-r--r-- | ext/pango/gsttextrender.c | 705 |
1 files changed, 0 insertions, 705 deletions
diff --git a/ext/pango/gsttextrender.c b/ext/pango/gsttextrender.c deleted file mode 100644 index c9372449..00000000 --- a/ext/pango/gsttextrender.c +++ /dev/null @@ -1,705 +0,0 @@ -/* GStreamer - * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> - * Copyright (C) <2003> David Schleef <ds@schleef.org> - * Copyright (C) <2009> Young-Ho Cha <ganadist@gmail.com> - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - */ - - -/** - * SECTION:element-textrender - * @see_also: #GstTextOverlay - * - * This plugin renders text received on the text sink pad to a video - * buffer (retaining the alpha channel), so it can later be overlayed - * on top of video streams using other elements. - * - * The text can contain newline characters. (FIXME: What about text - * wrapping? It does not make sense in this context) - * - * <refsect2> - * <title>Example launch lines</title> - * |[ - * gst-launch -v filesrc location=subtitles.srt ! subparse ! textrender ! xvimagesink - * ]| - * </refsect2> - */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif - -#include <gst/gst.h> -#include <gst/video/video.h> - -#include "gsttextrender.h" -#include <string.h> - -#if G_BYTE_ORDER == G_LITTLE_ENDIAN -# define CAIRO_ARGB_A 3 -# define CAIRO_ARGB_R 2 -# define CAIRO_ARGB_G 1 -# define CAIRO_ARGB_B 0 -#else -# define CAIRO_ARGB_A 0 -# define CAIRO_ARGB_R 1 -# define CAIRO_ARGB_G 2 -# define CAIRO_ARGB_B 3 -#endif - -GST_DEBUG_CATEGORY_EXTERN (pango_debug); -#define GST_CAT_DEFAULT pango_debug - -#define MINIMUM_OUTLINE_OFFSET 1.0 - -#define DEFAULT_PROP_VALIGNMENT GST_TEXT_RENDER_VALIGN_BASELINE -#define DEFAULT_PROP_HALIGNMENT GST_TEXT_RENDER_HALIGN_CENTER -#define DEFAULT_PROP_LINE_ALIGNMENT GST_TEXT_RENDER_LINE_ALIGN_CENTER -#define DEFAULT_PROP_XPAD 25 -#define DEFAULT_PROP_YPAD 25 - -#define DEFAULT_RENDER_WIDTH 720 -#define DEFAULT_RENDER_HEIGHT 576 - -enum -{ - PROP_0, - PROP_HALIGNMENT, - PROP_VALIGNMENT, - PROP_LINE_ALIGNMENT, - PROP_XPAD, - PROP_YPAD, - PROP_FONT_DESC -}; - - -static GstStaticPadTemplate src_template_factory = - GST_STATIC_PAD_TEMPLATE ("src", - GST_PAD_SRC, - GST_PAD_ALWAYS, - GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("AYUV") ";" GST_VIDEO_CAPS_ARGB) - ); - -static GstStaticPadTemplate sink_template_factory = - GST_STATIC_PAD_TEMPLATE ("sink", - GST_PAD_SINK, - GST_PAD_ALWAYS, - GST_STATIC_CAPS ("text/x-pango-markup; text/plain") - ); - -#define GST_TYPE_TEXT_RENDER_VALIGN (gst_text_render_valign_get_type()) -static GType -gst_text_render_valign_get_type (void) -{ - static GType text_render_valign_type = 0; - static const GEnumValue text_render_valign[] = { - {GST_TEXT_RENDER_VALIGN_BASELINE, "baseline", "baseline"}, - {GST_TEXT_RENDER_VALIGN_BOTTOM, "bottom", "bottom"}, - {GST_TEXT_RENDER_VALIGN_TOP, "top", "top"}, - {0, NULL, NULL}, - }; - - if (!text_render_valign_type) { - text_render_valign_type = - g_enum_register_static ("GstTextRenderVAlign", text_render_valign); - } - return text_render_valign_type; -} - -#define GST_TYPE_TEXT_RENDER_HALIGN (gst_text_render_halign_get_type()) -static GType -gst_text_render_halign_get_type (void) -{ - static GType text_render_halign_type = 0; - static const GEnumValue text_render_halign[] = { - {GST_TEXT_RENDER_HALIGN_LEFT, "left", "left"}, - {GST_TEXT_RENDER_HALIGN_CENTER, "center", "center"}, - {GST_TEXT_RENDER_HALIGN_RIGHT, "right", "right"}, - {0, NULL, NULL}, - }; - - if (!text_render_halign_type) { - text_render_halign_type = - g_enum_register_static ("GstTextRenderHAlign", text_render_halign); - } - return text_render_halign_type; -} - -#define GST_TYPE_TEXT_RENDER_LINE_ALIGN (gst_text_render_line_align_get_type()) -static GType -gst_text_render_line_align_get_type (void) -{ - static GType text_render_line_align_type = 0; - static const GEnumValue text_render_line_align[] = { - {GST_TEXT_RENDER_LINE_ALIGN_LEFT, "left", "left"}, - {GST_TEXT_RENDER_LINE_ALIGN_CENTER, "center", "center"}, - {GST_TEXT_RENDER_LINE_ALIGN_RIGHT, "right", "right"}, - {0, NULL, NULL} - }; - - if (!text_render_line_align_type) { - text_render_line_align_type = - g_enum_register_static ("GstTextRenderLineAlign", - text_render_line_align); - } - return text_render_line_align_type; -} - -static void gst_text_render_adjust_values_with_fontdesc (GstTextRender * - render, PangoFontDescription * desc); - -GST_BOILERPLATE (GstTextRender, gst_text_render, GstElement, GST_TYPE_ELEMENT); - -static void gst_text_render_finalize (GObject * object); -static void gst_text_render_set_property (GObject * object, - guint prop_id, const GValue * value, GParamSpec * pspec); -static void gst_text_render_get_property (GObject * object, - guint prop_id, GValue * value, GParamSpec * pspec); - -static void -gst_text_render_base_init (gpointer g_class) -{ - GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); - - gst_element_class_add_pad_template (element_class, - gst_static_pad_template_get (&src_template_factory)); - gst_element_class_add_pad_template (element_class, - gst_static_pad_template_get (&sink_template_factory)); - - gst_element_class_set_details_simple (element_class, "Text renderer", - "Filter/Editor/Video", - "Renders a text string to an image bitmap", - "David Schleef <ds@schleef.org>, " - "GStreamer maintainers <gstreamer-devel@lists.sourceforge.net>"); -} - -static void -gst_text_render_class_init (GstTextRenderClass * klass) -{ - GObjectClass *gobject_class; - PangoFontMap *fontmap; - - gobject_class = (GObjectClass *) klass; - - parent_class = g_type_class_peek_parent (klass); - - gobject_class->finalize = gst_text_render_finalize; - gobject_class->set_property = gst_text_render_set_property; - gobject_class->get_property = gst_text_render_get_property; - - fontmap = pango_cairo_font_map_get_default (); - klass->pango_context = - pango_cairo_font_map_create_context (PANGO_CAIRO_FONT_MAP (fontmap)); - g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_FONT_DESC, - g_param_spec_string ("font-desc", "font description", - "Pango font description of font " - "to be used for rendering. " - "See documentation of " - "pango_font_description_from_string" - " for syntax.", "", G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS)); - g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_VALIGNMENT, - g_param_spec_enum ("valignment", "vertical alignment", - "Vertical alignment of the text", GST_TYPE_TEXT_RENDER_VALIGN, - DEFAULT_PROP_VALIGNMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); - g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_HALIGNMENT, - g_param_spec_enum ("halignment", "horizontal alignment", - "Horizontal alignment of the text", GST_TYPE_TEXT_RENDER_HALIGN, - DEFAULT_PROP_HALIGNMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); - g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_XPAD, - g_param_spec_int ("xpad", "horizontal paddding", - "Horizontal paddding when using left/right alignment", 0, G_MAXINT, - DEFAULT_PROP_XPAD, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); - g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_YPAD, - g_param_spec_int ("ypad", "vertical padding", - "Vertical padding when using top/bottom alignment", 0, G_MAXINT, - DEFAULT_PROP_YPAD, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); - g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_LINE_ALIGNMENT, - g_param_spec_enum ("line-alignment", "line alignment", - "Alignment of text lines relative to each other.", - GST_TYPE_TEXT_RENDER_LINE_ALIGN, DEFAULT_PROP_LINE_ALIGNMENT, - G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); -} - -static void -gst_text_render_adjust_values_with_fontdesc (GstTextRender * render, - PangoFontDescription * desc) -{ - gint font_size = pango_font_description_get_size (desc) / PANGO_SCALE; - - render->shadow_offset = (double) (font_size) / 13.0; - render->outline_offset = (double) (font_size) / 15.0; - if (render->outline_offset < MINIMUM_OUTLINE_OFFSET) - render->outline_offset = MINIMUM_OUTLINE_OFFSET; -} - -static void -gst_text_render_render_pangocairo (GstTextRender * render) -{ - cairo_t *cr; - cairo_surface_t *surface; - cairo_t *cr_shadow; - cairo_surface_t *surface_shadow; - PangoRectangle ink_rect, logical_rect; - gint width, height; - - pango_layout_get_pixel_extents (render->layout, &ink_rect, &logical_rect); - - width = logical_rect.width + render->shadow_offset; - height = logical_rect.height + logical_rect.y + render->shadow_offset; - - surface_shadow = cairo_image_surface_create (CAIRO_FORMAT_A8, width, height); - cr_shadow = cairo_create (surface_shadow); - - /* clear shadow surface */ - cairo_set_operator (cr_shadow, CAIRO_OPERATOR_CLEAR); - cairo_paint (cr_shadow); - cairo_set_operator (cr_shadow, CAIRO_OPERATOR_OVER); - - /* draw shadow text */ - cairo_save (cr_shadow); - cairo_set_source_rgba (cr_shadow, 0.0, 0.0, 0.0, 0.5); - cairo_translate (cr_shadow, render->shadow_offset, render->shadow_offset); - pango_cairo_show_layout (cr_shadow, render->layout); - cairo_restore (cr_shadow); - - /* draw outline text */ - cairo_save (cr_shadow); - cairo_set_source_rgb (cr_shadow, 0.0, 0.0, 0.0); - cairo_set_line_width (cr_shadow, render->outline_offset); - pango_cairo_layout_path (cr_shadow, render->layout); - cairo_stroke (cr_shadow); - cairo_restore (cr_shadow); - - cairo_destroy (cr_shadow); - - render->text_image = g_realloc (render->text_image, 4 * width * height); - - surface = cairo_image_surface_create_for_data (render->text_image, - CAIRO_FORMAT_ARGB32, width, height, width * 4); - cr = cairo_create (surface); - cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR); - cairo_paint (cr); - cairo_set_operator (cr, CAIRO_OPERATOR_OVER); - - /* set default color */ - cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); - - cairo_save (cr); - /* draw text */ - pango_cairo_show_layout (cr, render->layout); - cairo_restore (cr); - - /* composite shadow with offset */ - cairo_set_operator (cr, CAIRO_OPERATOR_DEST_OVER); - cairo_set_source_surface (cr, surface_shadow, 0.0, 0.0); - cairo_paint (cr); - - cairo_destroy (cr); - cairo_surface_destroy (surface_shadow); - cairo_surface_destroy (surface); - render->image_width = width; - render->image_height = height; -} - -static void -gst_text_render_check_argb (GstTextRender * render) -{ - GstCaps *peer_caps; - peer_caps = gst_pad_get_allowed_caps (render->srcpad); - if (G_LIKELY (peer_caps)) { - guint i = 0, n = 0; - - n = gst_caps_get_size (peer_caps); - GST_DEBUG_OBJECT (render, "peer allowed caps (%u structure(s)) are %" - GST_PTR_FORMAT, n, peer_caps); - - /* Check if AYUV or ARGB is first */ - for (i = 0; i < n; i++) { - GstStructure *s = gst_caps_get_structure (peer_caps, i); - if (gst_structure_has_name (s, "video/x-raw-rgb") && - gst_structure_has_field (s, "alpha_mask")) { - render->use_ARGB = TRUE; - break; - } else if (gst_structure_has_name (s, "video/x-raw-yuv")) { - guint fourcc; - if (gst_structure_get_fourcc (s, "format", &fourcc) && - fourcc == GST_MAKE_FOURCC ('A', 'Y', 'U', 'V')) { - render->use_ARGB = FALSE; - break; - } - } - } - gst_caps_unref (peer_caps); - } -} - -static gboolean -gst_text_render_setcaps (GstPad * pad, GstCaps * caps) -{ - GstTextRender *render = GST_TEXT_RENDER (gst_pad_get_parent (pad)); - GstStructure *structure; - gboolean ret = FALSE; - gint width = 0, height = 0; - - structure = gst_caps_get_structure (caps, 0); - gst_structure_get_int (structure, "width", &width); - gst_structure_get_int (structure, "height", &height); - - GST_DEBUG ("Got caps %" GST_PTR_FORMAT, caps); - - if (width >= render->image_width && height >= render->image_height) { - render->width = width; - render->height = height; - ret = TRUE; - } - - gst_text_render_check_argb (render); - - gst_object_unref (render); - return ret; -} - -static void -gst_text_render_fixate_caps (GstPad * pad, GstCaps * caps) -{ - GstTextRender *render = GST_TEXT_RENDER (gst_pad_get_parent (pad)); - GstStructure *s = gst_caps_get_structure (caps, 0); - - GST_DEBUG ("Fixating caps %" GST_PTR_FORMAT, caps); - gst_structure_fixate_field_nearest_int (s, "width", render->image_width); - gst_structure_fixate_field_nearest_int (s, "height", render->image_height); - GST_DEBUG ("Fixated to %" GST_PTR_FORMAT, caps); - - gst_object_unref (render); -} - -#define CAIRO_UNPREMULTIPLY(a,r,g,b) G_STMT_START { \ - b = (a > 0) ? MIN ((b * 255 + a / 2) / a, 255) : 0; \ - g = (a > 0) ? MIN ((g * 255 + a / 2) / a, 255) : 0; \ - r = (a > 0) ? MIN ((r * 255 + a / 2) / a, 255) : 0; \ -} G_STMT_END - -static void -gst_text_renderer_image_to_ayuv (GstTextRender * render, guchar * pixbuf, - int xpos, int ypos, int stride) -{ - int y; /* text bitmap coordinates */ - guchar *p, *bitp; - guchar a, r, g, b; - int width, height; - - width = render->image_width; - height = render->image_height; - bitp = render->text_image; - - for (y = 0; y < height; y++) { - int n; - p = pixbuf + (ypos + y) * stride + xpos * 4; - for (n = 0; n < width; n++) { - b = bitp[CAIRO_ARGB_B]; - g = bitp[CAIRO_ARGB_G]; - r = bitp[CAIRO_ARGB_R]; - a = bitp[CAIRO_ARGB_A]; - bitp += 4; - - /* Cairo uses pre-multiplied ARGB, unpremultiply it */ - CAIRO_UNPREMULTIPLY (a, r, g, b); - - *p++ = a; - *p++ = CLAMP ((int) (((19595 * r) >> 16) + ((38470 * g) >> 16) + - ((7471 * b) >> 16)), 0, 255); - *p++ = CLAMP ((int) (-((11059 * r) >> 16) - ((21709 * g) >> 16) + - ((32768 * b) >> 16) + 128), 0, 255); - *p++ = CLAMP ((int) (((32768 * r) >> 16) - ((27439 * g) >> 16) - - ((5329 * b) >> 16) + 128), 0, 255); - } - } -} - -static void -gst_text_renderer_image_to_argb (GstTextRender * render, guchar * pixbuf, - int xpos, int ypos, int stride) -{ - int i, j; - guchar *p, *bitp; - int width, height; - - width = render->image_width; - height = render->image_height; - bitp = render->text_image; - - for (i = 0; i < height; i++) { - p = pixbuf + (ypos + i) * stride + xpos * 4; - for (j = 0; j < width; j++) { - p[0] = bitp[CAIRO_ARGB_A]; - p[1] = bitp[CAIRO_ARGB_R]; - p[2] = bitp[CAIRO_ARGB_G]; - p[3] = bitp[CAIRO_ARGB_B]; - - /* Cairo uses pre-multiplied ARGB, unpremultiply it */ - CAIRO_UNPREMULTIPLY (p[0], p[1], p[2], p[3]); - - bitp += 4; - p += 4; - } - } -} - -static GstFlowReturn -gst_text_render_chain (GstPad * pad, GstBuffer * inbuf) -{ - GstTextRender *render; - GstFlowReturn ret; - GstBuffer *outbuf; - GstCaps *caps = NULL; - guint8 *data = GST_BUFFER_DATA (inbuf); - guint size = GST_BUFFER_SIZE (inbuf); - gint n; - gint xpos, ypos; - - render = GST_TEXT_RENDER (gst_pad_get_parent (pad)); - - /* somehow pango barfs over "\0" buffers... */ - while (size > 0 && - (data[size - 1] == '\r' || - data[size - 1] == '\n' || data[size - 1] == '\0')) { - size--; - } - - /* render text */ - GST_DEBUG ("rendering '%*s'", size, data); - pango_layout_set_markup (render->layout, (gchar *) data, size); - gst_text_render_render_pangocairo (render); - - gst_text_render_check_argb (render); - - if (!render->use_ARGB) { - caps = - gst_video_format_new_caps (GST_VIDEO_FORMAT_AYUV, render->width, - render->height, 1, 1, 1, 1); - } else { - caps = - gst_video_format_new_caps (GST_VIDEO_FORMAT_ARGB, render->width, - render->height, 1, 1, 1, 1); - } - - if (!gst_pad_set_caps (render->srcpad, caps)) { - gst_caps_unref (caps); - GST_ELEMENT_ERROR (render, CORE, NEGOTIATION, (NULL), (NULL)); - ret = GST_FLOW_ERROR; - goto done; - } - - GST_DEBUG ("Allocating buffer WxH = %dx%d", render->width, render->height); - ret = - gst_pad_alloc_buffer_and_set_caps (render->srcpad, GST_BUFFER_OFFSET_NONE, - render->width * render->height * 4, caps, &outbuf); - - if (ret != GST_FLOW_OK) - goto done; - - gst_buffer_copy_metadata (outbuf, inbuf, GST_BUFFER_COPY_TIMESTAMPS); - data = GST_BUFFER_DATA (outbuf); - - if (render->use_ARGB) { - memset (data, 0, render->width * render->height * 4); - } else { - for (n = 0; n < render->width * render->height; n++) { - data[n * 4] = data[n * 4 + 1] = 0; - data[n * 4 + 2] = data[n * 4 + 3] = 128; - } - } - - switch (render->halign) { - case GST_TEXT_RENDER_HALIGN_LEFT: - xpos = render->xpad; - break; - case GST_TEXT_RENDER_HALIGN_CENTER: - xpos = (render->width - render->image_width) / 2; - break; - case GST_TEXT_RENDER_HALIGN_RIGHT: - xpos = render->width - render->image_width - render->xpad; - break; - default: - xpos = 0; - } - - switch (render->valign) { - case GST_TEXT_RENDER_VALIGN_BOTTOM: - ypos = render->height - render->image_height - render->ypad; - break; - case GST_TEXT_RENDER_VALIGN_BASELINE: - ypos = render->height - (render->image_height + render->ypad); - break; - case GST_TEXT_RENDER_VALIGN_TOP: - ypos = render->ypad; - break; - default: - ypos = render->ypad; - break; - } - - if (render->text_image) { - if (render->use_ARGB) { - gst_text_renderer_image_to_argb (render, data, xpos, ypos, - render->width * 4); - } else { - gst_text_renderer_image_to_ayuv (render, data, xpos, ypos, - render->width * 4); - } - } - - ret = gst_pad_push (render->srcpad, outbuf); - -done: - if (caps) - gst_caps_unref (caps); - gst_buffer_unref (inbuf); - gst_object_unref (render); - return ret; -} - -static void -gst_text_render_finalize (GObject * object) -{ - GstTextRender *render = GST_TEXT_RENDER (object); - - g_free (render->text_image); - - if (render->layout) - g_object_unref (render->layout); - - G_OBJECT_CLASS (parent_class)->finalize (object); -} - -static void -gst_text_render_init (GstTextRender * render, GstTextRenderClass * klass) -{ - GstPadTemplate *template; - - /* sink */ - template = gst_static_pad_template_get (&sink_template_factory); - render->sinkpad = gst_pad_new_from_template (template, "sink"); - gst_object_unref (template); - gst_pad_set_chain_function (render->sinkpad, - GST_DEBUG_FUNCPTR (gst_text_render_chain)); - gst_element_add_pad (GST_ELEMENT (render), render->sinkpad); - - /* source */ - template = gst_static_pad_template_get (&src_template_factory); - render->srcpad = gst_pad_new_from_template (template, "src"); - gst_object_unref (template); - gst_pad_set_fixatecaps_function (render->srcpad, - GST_DEBUG_FUNCPTR (gst_text_render_fixate_caps)); - gst_pad_set_setcaps_function (render->srcpad, - GST_DEBUG_FUNCPTR (gst_text_render_setcaps)); - - gst_element_add_pad (GST_ELEMENT (render), render->srcpad); - - render->line_align = DEFAULT_PROP_LINE_ALIGNMENT; - render->layout = - pango_layout_new (GST_TEXT_RENDER_GET_CLASS (render)->pango_context); - pango_layout_set_alignment (render->layout, - (PangoAlignment) render->line_align); - - render->halign = DEFAULT_PROP_HALIGNMENT; - render->valign = DEFAULT_PROP_VALIGNMENT; - render->xpad = DEFAULT_PROP_XPAD; - render->ypad = DEFAULT_PROP_YPAD; - - render->width = DEFAULT_RENDER_WIDTH; - render->height = DEFAULT_RENDER_HEIGHT; - - render->use_ARGB = FALSE; -} - -static void -gst_text_render_set_property (GObject * object, guint prop_id, - const GValue * value, GParamSpec * pspec) -{ - GstTextRender *render = GST_TEXT_RENDER (object); - - switch (prop_id) { - case PROP_VALIGNMENT: - render->valign = g_value_get_enum (value); - break; - case PROP_HALIGNMENT: - render->halign = g_value_get_enum (value); - break; - case PROP_LINE_ALIGNMENT: - render->line_align = g_value_get_enum (value); - pango_layout_set_alignment (render->layout, - (PangoAlignment) render->line_align); - break; - case PROP_XPAD: - render->xpad = g_value_get_int (value); - break; - case PROP_YPAD: - render->ypad = g_value_get_int (value); - break; - case PROP_FONT_DESC: - { - PangoFontDescription *desc; - - desc = pango_font_description_from_string (g_value_get_string (value)); - if (desc) { - GST_LOG ("font description set: %s", g_value_get_string (value)); - GST_OBJECT_LOCK (render); - pango_layout_set_font_description (render->layout, desc); - gst_text_render_adjust_values_with_fontdesc (render, desc); - pango_font_description_free (desc); - gst_text_render_render_pangocairo (render); - GST_OBJECT_UNLOCK (render); - } else { - GST_WARNING ("font description parse failed: %s", - g_value_get_string (value)); - } - break; - } - - default: - break; - } -} - -static void -gst_text_render_get_property (GObject * object, guint prop_id, - GValue * value, GParamSpec * pspec) -{ - GstTextRender *render = GST_TEXT_RENDER (object); - - switch (prop_id) { - case PROP_VALIGNMENT: - g_value_set_enum (value, render->valign); - break; - case PROP_HALIGNMENT: - g_value_set_enum (value, render->halign); - break; - case PROP_LINE_ALIGNMENT: - g_value_set_enum (value, render->line_align); - break; - case PROP_XPAD: - g_value_set_int (value, render->xpad); - break; - case PROP_YPAD: - g_value_set_int (value, render->ypad); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); - break; - } -} |