From e3dbf9e2569914f49cc4ff7cc2925543eda38636 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Tim-Philipp=20M=C3=BCller?= Date: Tue, 1 Jan 2013 12:12:02 +0000 Subject: [PATCH] cairo: remove old cairo-based text renderering element They haven't worked well or at all in a very long time and were rather bit-rotten, and there's no need for them any more. --- ext/cairo/Makefile.am | 8 - ext/cairo/gstcairo.c | 16 - ext/cairo/gstcairorender.c | 383 ------------- ext/cairo/gstcairorender.h | 63 --- ext/cairo/gsttextoverlay.c | 1042 ------------------------------------ ext/cairo/gsttextoverlay.h | 90 ---- ext/cairo/gsttimeoverlay.c | 316 ----------- ext/cairo/gsttimeoverlay.h | 59 -- 8 files changed, 1977 deletions(-) delete mode 100644 ext/cairo/gstcairorender.c delete mode 100644 ext/cairo/gstcairorender.h delete mode 100644 ext/cairo/gsttextoverlay.c delete mode 100644 ext/cairo/gsttextoverlay.h delete mode 100644 ext/cairo/gsttimeoverlay.c delete mode 100644 ext/cairo/gsttimeoverlay.h diff --git a/ext/cairo/Makefile.am b/ext/cairo/Makefile.am index acdbd33527..fac51f6d92 100644 --- a/ext/cairo/Makefile.am +++ b/ext/cairo/Makefile.am @@ -1,13 +1,5 @@ plugin_LTLIBRARIES = libgstcairo.la -# we probably don't really want to port these -# gsttimeoverlay.h -# gsttextoverlay.h -# gstcairorender.h -# gsttimeoverlay.c -# gsttextoverlay.c -# gstcairorender.c - noinst_HEADERS = \ gstcairooverlay.h libgstcairo_la_SOURCES = \ diff --git a/ext/cairo/gstcairo.c b/ext/cairo/gstcairo.c index 95f0f6e9b8..5b94387408 100644 --- a/ext/cairo/gstcairo.c +++ b/ext/cairo/gstcairo.c @@ -22,12 +22,6 @@ #include "config.h" #endif -#if 0 -#include -#include -#include -#endif - #include #include @@ -38,16 +32,6 @@ GST_DEBUG_CATEGORY (cairo_debug); static gboolean plugin_init (GstPlugin * plugin) { -#if 0 - /* we probably don't want to port these */ - gst_element_register (plugin, "cairotextoverlay", GST_RANK_NONE, - GST_TYPE_CAIRO_TEXT_OVERLAY); - gst_element_register (plugin, "cairotimeoverlay", GST_RANK_NONE, - GST_TYPE_CAIRO_TIME_OVERLAY); - gst_element_register (plugin, "cairorender", GST_RANK_SECONDARY, - GST_TYPE_CAIRO_RENDER); -#endif - gst_element_register (plugin, "cairooverlay", GST_RANK_NONE, GST_TYPE_CAIRO_OVERLAY); diff --git a/ext/cairo/gstcairorender.c b/ext/cairo/gstcairorender.c deleted file mode 100644 index f0bbc09c0c..0000000000 --- a/ext/cairo/gstcairorender.c +++ /dev/null @@ -1,383 +0,0 @@ -/* GStreamer - * - * Copyright (C) 2006-2009 Lutz Mueller - * - * 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., 51 Franklin St, Fifth Floor, - * Boston, MA 02110-1301, USA. - */ - -/** - * SECTION:element-cairorender - * - * cairorender encodes a video stream into PDF, SVG, PNG or Postscript - * - * - * Example launch line - * |[ - * gst-launch-1.0 videotestsrc num-buffers=3 ! cairorender ! "application/pdf" ! filesink location=test.pdf - * ]| - * - */ - -#include "gstcairorender.h" - -#include -#include -#ifdef CAIRO_HAS_PS_SURFACE -#include -#endif -#ifdef CAIRO_HAS_PDF_SURFACE -#include -#endif -#ifdef CAIRO_HAS_SVG_SURFACE -#include -#endif - -#include - -#include - -GST_DEBUG_CATEGORY_STATIC (cairo_render_debug); -#define GST_CAT_DEFAULT cairo_render_debug - -static gboolean -gst_cairo_render_event (GstPad * pad, GstEvent * e) -{ - GstCairoRender *c = GST_CAIRO_RENDER (GST_PAD_PARENT (pad)); - - switch (GST_EVENT_TYPE (e)) { - case GST_EVENT_EOS: - if (c->surface) - cairo_surface_finish (c->surface); - break; - default: - break; - } - return gst_pad_event_default (pad, e); -} - -static cairo_status_t -write_func (void *closure, const unsigned char *data, unsigned int length) -{ - GstCairoRender *c = GST_CAIRO_RENDER (closure); - GstBuffer *buf; - GstFlowReturn r; - - buf = gst_buffer_new (); - gst_buffer_set_data (buf, (guint8 *) data, length); - gst_buffer_set_caps (buf, GST_PAD_CAPS (c->src)); - if ((r = gst_pad_push (c->src, buf)) != GST_FLOW_OK) { - GST_DEBUG_OBJECT (c, "Could not pass on buffer: %s.", - gst_flow_get_name (r)); - return CAIRO_STATUS_WRITE_ERROR; - } - return CAIRO_STATUS_SUCCESS; -} - -static cairo_status_t -read_buffer (void *closure, unsigned char *data, unsigned int length) -{ - GstBuffer *buf = GST_BUFFER (closure); - - if (GST_BUFFER_OFFSET (buf) + length > GST_BUFFER_SIZE (buf)) - return CAIRO_STATUS_READ_ERROR; - memcpy (data, GST_BUFFER_DATA (buf) + GST_BUFFER_OFFSET (buf), length); - GST_BUFFER_OFFSET (buf) += length; - return CAIRO_STATUS_SUCCESS; -} - -static gboolean -gst_cairo_render_push_surface (GstCairoRender * c, cairo_surface_t * surface) -{ - cairo_status_t s = 0; - cairo_t *cr; - - if (!c->surface) { - s = cairo_surface_write_to_png_stream (surface, write_func, c); - cairo_surface_destroy (surface); - if (s != CAIRO_STATUS_SUCCESS) { - GST_DEBUG_OBJECT (c, "Could not create PNG stream: %s.", - cairo_status_to_string (s)); - return FALSE; - } - return TRUE; - } - - cr = cairo_create (c->surface); - cairo_set_source_surface (cr, surface, 0, 0); - cairo_paint (cr); - cairo_show_page (cr); - cairo_destroy (cr); - cairo_surface_destroy (surface); - return (TRUE); -} - -static GstFlowReturn -gst_cairo_render_chain (GstPad * pad, GstBuffer * buf) -{ - GstCairoRender *c = GST_CAIRO_RENDER (GST_PAD_PARENT (pad)); - cairo_surface_t *s; - gboolean success; - - if (G_UNLIKELY (c->width <= 0 || c->height <= 0 || c->stride <= 0)) - return GST_FLOW_NOT_NEGOTIATED; - - if (c->png) { - GST_BUFFER_OFFSET (buf) = 0; - s = cairo_image_surface_create_from_png_stream (read_buffer, buf); - } else { - if (c->format == CAIRO_FORMAT_ARGB32) { - guint i, j; - guint8 *data = GST_BUFFER_DATA (buf); - - buf = gst_buffer_make_writable (buf); - - /* Cairo ARGB is pre-multiplied with the alpha - * value, i.e. 0x80008000 is half transparent - * green - */ - for (i = 0; i < c->height; i++) { - for (j = 0; j < c->width; j++) { -#if G_BYTE_ORDER == G_LITTLE_ENDIAN - guint8 alpha = data[3]; - - data[0] = (data[0] * alpha) >> 8; - data[1] = (data[1] * alpha) >> 8; - data[2] = (data[2] * alpha) >> 8; -#else - guint8 alpha = data[0]; - - data[1] = (data[1] * alpha) >> 8; - data[2] = (data[2] * alpha) >> 8; - data[3] = (data[3] * alpha) >> 8; -#endif - data += 4; - } - } - } - - s = cairo_image_surface_create_for_data (GST_BUFFER_DATA (buf), - c->format, c->width, c->height, c->stride); - } - - success = gst_cairo_render_push_surface (c, s); - gst_buffer_unref (buf); - return success ? GST_FLOW_OK : GST_FLOW_ERROR; -} - -static gboolean -gst_cairo_render_setcaps_sink (GstPad * pad, GstCaps * caps) -{ - GstCairoRender *c = GST_CAIRO_RENDER (GST_PAD_PARENT (pad)); - GstStructure *s = gst_caps_get_structure (caps, 0); - const gchar *mime = gst_structure_get_name (s); - gint fps_n = 0, fps_d = 1; - gint w, h; - - GST_DEBUG_OBJECT (c, "Got caps (%s).", mime); - if ((c->png = !strcmp (mime, "image/png"))) - return TRUE; - - /* Width and height */ - if (!gst_structure_get_int (s, "width", &c->width) || - !gst_structure_get_int (s, "height", &c->height)) { - GST_ERROR_OBJECT (c, "Invalid caps"); - return FALSE; - } - - /* Colorspace */ - if (!strcmp (mime, "video/x-raw-yuv") || !strcmp (mime, "video/x-raw-grey")) { - c->format = CAIRO_FORMAT_A8; - c->stride = GST_ROUND_UP_4 (c->width); - } else if (!strcmp (mime, "video/x-raw-rgb")) { - gint bpp; - - if (!gst_structure_get_int (s, "bpp", &bpp)) { - GST_ERROR_OBJECT (c, "Invalid caps"); - return FALSE; - } - - c->format = (bpp == 32) ? CAIRO_FORMAT_ARGB32 : CAIRO_FORMAT_RGB24; - c->stride = 4 * c->width; - } else { - GST_DEBUG_OBJECT (c, "Unknown mime type '%s'.", mime); - return FALSE; - } - - /* Framerate */ - gst_structure_get_fraction (s, "framerate", &fps_n, &fps_d); - - /* Create output caps */ - caps = gst_pad_get_allowed_caps (c->src); - caps = gst_caps_make_writable (caps); - gst_caps_truncate (caps); - s = gst_caps_get_structure (caps, 0); - mime = gst_structure_get_name (s); - gst_structure_set (s, "height", G_TYPE_INT, c->height, "width", G_TYPE_INT, - c->width, "framerate", GST_TYPE_FRACTION, fps_n, fps_d, NULL); - - if (c->surface) { - cairo_surface_destroy (c->surface); - c->surface = NULL; - } - - w = c->width; - h = c->height; - - GST_DEBUG_OBJECT (c, "Setting src caps %" GST_PTR_FORMAT, caps); - gst_pad_set_caps (c->src, caps); - -#if CAIRO_HAS_PS_SURFACE - if (!strcmp (mime, "application/postscript")) { - c->surface = cairo_ps_surface_create_for_stream (write_func, c, w, h); - } else -#endif -#if CAIRO_HAS_PDF_SURFACE - if (!strcmp (mime, "application/pdf")) { - c->surface = cairo_pdf_surface_create_for_stream (write_func, c, w, h); - } else -#endif -#if CAIRO_HAS_SVG_SURFACE - if (!strcmp (mime, "image/svg+xml")) { - c->surface = cairo_svg_surface_create_for_stream (write_func, c, w, h); - } else -#endif - { - gst_caps_unref (caps); - return FALSE; - } - - gst_caps_unref (caps); - - return TRUE; -} - - -#define SIZE_CAPS "width = (int) [ 1, MAX], height = (int) [ 1, MAX] " -#if CAIRO_HAS_PDF_SURFACE -#define PDF_CAPS "application/pdf, " SIZE_CAPS -#else -#define PDF_CAPS -#endif -#if CAIRO_HAS_PDF_SURFACE && (CAIRO_HAS_PS_SURFACE || CAIRO_HAS_SVG_SURFACE || CAIRO_HAS_PNG_FUNCTIONS) -#define JOIN1 ";" -#else -#define JOIN1 -#endif -#if CAIRO_HAS_PS_SURFACE -#define PS_CAPS "application/postscript, " SIZE_CAPS -#else -#define PS_CAPS -#endif -#if (CAIRO_HAS_PDF_SURFACE || CAIRO_HAS_PS_SURFACE) && (CAIRO_HAS_SVG_SURFACE || CAIRO_HAS_PNG_FUNCTIONS) -#define JOIN2 ";" -#else -#define JOIN2 -#endif -#if CAIRO_HAS_SVG_SURFACE -#define SVG_CAPS "image/svg+xml, " SIZE_CAPS -#else -#define SVG_CAPS -#endif -#if (CAIRO_HAS_PDF_SURFACE || CAIRO_HAS_PS_SURFACE || CAIRO_HAS_SVG_SURFACE) && CAIRO_HAS_PNG_FUNCTIONS -#define JOIN3 ";" -#else -#define JOIN3 -#endif -#if CAIRO_HAS_PNG_FUNCTIONS -#define PNG_CAPS "image/png, " SIZE_CAPS -#define PNG_CAPS2 "; image/png, " SIZE_CAPS -#else -#define PNG_CAPS -#define PNG_CAPS2 -#endif - -#if G_BYTE_ORDER == G_LITTLE_ENDIAN -#define ARGB_CAPS GST_VIDEO_CAPS_BGRx " ; " GST_VIDEO_CAPS_BGRA " ; " -#else -#define ARGB_CAPS GST_VIDEO_CAPS_xRGB " ; " GST_VIDEO_CAPS_ARGB " ; " -#endif -static GstStaticPadTemplate t_src = GST_STATIC_PAD_TEMPLATE ("src", - GST_PAD_SRC, GST_PAD_ALWAYS, - GST_STATIC_CAPS (PDF_CAPS JOIN1 PS_CAPS JOIN2 SVG_CAPS JOIN3 PNG_CAPS)); -static GstStaticPadTemplate t_snk = GST_STATIC_PAD_TEMPLATE ("sink", - GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS (ARGB_CAPS - GST_VIDEO_CAPS_YUV ("Y800") " ; " - "video/x-raw-gray, " - "bpp = 8, " - "depth = 8, " - "width = " GST_VIDEO_SIZE_RANGE ", " - "height = " GST_VIDEO_SIZE_RANGE ", " "framerate = " GST_VIDEO_FPS_RANGE - PNG_CAPS2)); - -GST_BOILERPLATE (GstCairoRender, gst_cairo_render, GstElement, - GST_TYPE_ELEMENT); - -static void -gst_cairo_render_init (GstCairoRender * c, GstCairoRenderClass * klass) -{ - /* The sink */ - c->snk = gst_pad_new_from_static_template (&t_snk, "sink"); - gst_pad_set_event_function (c->snk, gst_cairo_render_event); - gst_pad_set_chain_function (c->snk, gst_cairo_render_chain); - gst_pad_set_setcaps_function (c->snk, gst_cairo_render_setcaps_sink); - gst_pad_use_fixed_caps (c->snk); - gst_element_add_pad (GST_ELEMENT (c), c->snk); - - /* The source */ - c->src = gst_pad_new_from_static_template (&t_src, "src"); - gst_pad_use_fixed_caps (c->src); - gst_element_add_pad (GST_ELEMENT (c), c->src); - - c->width = 0; - c->height = 0; - c->stride = 0; -} - -static void -gst_cairo_render_base_init (gpointer g_class) -{ - GstElementClass *ec = GST_ELEMENT_CLASS (g_class); - - gst_element_class_set_static_metadata (ec, "Cairo encoder", - "Codec/Encoder", "Encodes streams using Cairo", - "Lutz Mueller "); - gst_element_class_add_pad_template (ec, gst_static_pad_template_get (&t_snk)); - gst_element_class_add_pad_template (ec, gst_static_pad_template_get (&t_src)); -} - -static void -gst_cairo_render_finalize (GObject * object) -{ - GstCairoRender *c = GST_CAIRO_RENDER (object); - - if (c->surface) { - cairo_surface_destroy (c->surface); - c->surface = NULL; - } - - G_OBJECT_CLASS (parent_class)->finalize (object); -} - -static void -gst_cairo_render_class_init (GstCairoRenderClass * klass) -{ - GObjectClass *gobject_class = G_OBJECT_CLASS (klass); - - gobject_class->finalize = gst_cairo_render_finalize; - - GST_DEBUG_CATEGORY_INIT (cairo_render_debug, "cairo_render", 0, - "Cairo encoder"); -} diff --git a/ext/cairo/gstcairorender.h b/ext/cairo/gstcairorender.h deleted file mode 100644 index 5edd211f57..0000000000 --- a/ext/cairo/gstcairorender.h +++ /dev/null @@ -1,63 +0,0 @@ -/* cairorender: CAIRO plugin for GStreamer - * - * Copyright (C) 2006-2009 Lutz Mueller - * - * 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., 51 Franklin St, Fifth Floor, - * Boston, MA 02110-1301, USA. - */ - -#ifndef __GST_CAIRO_RENDER_H_ -#define __GST_CAIRO_RENDER_H__ - -#include -#include - -G_BEGIN_DECLS - -#define GST_TYPE_CAIRO_RENDER (gst_cairo_render_get_type()) -#define GST_CAIRO_RENDER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CAIRO_RENDER,GstCairoRender)) -#define GST_CAIRO_RENDER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CAIRO_RENDER,GstCairoRenderClass)) - -typedef struct _GstCairoRender GstCairoRender; -typedef struct _GstCairoRenderClass GstCairoRenderClass; - -struct _GstCairoRender -{ - GstElement parent; - - GstPad *snk, *src; - - /* < private > */ - - /* Source */ - cairo_surface_t *surface; - gint width, height, stride; - - /* Sink */ - gint64 offset, duration; - gboolean png; - cairo_format_t format; -}; - -struct _GstCairoRenderClass -{ - GstElementClass parent_class; -}; - -GType gst_cairo_render_get_type (void) G_GNUC_CONST; - -G_END_DECLS - -#endif /* __GST_CAIRO_RENDER_H__ */ diff --git a/ext/cairo/gsttextoverlay.c b/ext/cairo/gsttextoverlay.c deleted file mode 100644 index 5e68609606..0000000000 --- a/ext/cairo/gsttextoverlay.c +++ /dev/null @@ -1,1042 +0,0 @@ -/* GStreamer - * Copyright (C) <1999> Erik Walthinsen - * Copyright (C) <2003> David Schleef - * - * 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., 51 Franklin St, Fifth Floor, - * Boston, MA 02110-1301, USA. - */ -/** - * SECTION:element-cairotextoverlay - * - * cairotextoverlay renders the text on top of the video frames. - * - * - * Example launch line - * |[ - * gst-launch-1.0 videotestsrc ! cairotextoverlay text="hello" ! autovideosink - * ]| - * - */ - -#ifdef HAVE_CONFIG_H -#include -#endif -#include -#include -#include "gsttextoverlay.h" - -#include - -/* FIXME: - * - calculating the position of the shading rectangle is - * not really right (try with text "L"), to say the least. - * Seems to work at least with latin script though. - * - check final x/y position and text width/height so that - * we don't do out-of-memory access when blitting the text. - * Also, we do not want to blit over the right or left margin. - * - what about text with newline characters? Cairo doesn't deal - * with that (we'd need to fix text_height usage for that as well) - * - upstream caps renegotiation, ie. when video window gets resized - */ - -GST_DEBUG_CATEGORY_EXTERN (cairo_debug); -#define GST_CAT_DEFAULT cairo_debug - -enum -{ - ARG_0, - ARG_TEXT, - ARG_SHADING, - ARG_VALIGN, - ARG_HALIGN, - ARG_XPAD, - ARG_YPAD, - ARG_DELTAX, - ARG_DELTAY, - ARG_SILENT, - ARG_FONT_DESC -}; - -#define DEFAULT_YPAD 25 -#define DEFAULT_XPAD 25 -#define DEFAULT_FONT "sans" -#define DEFAULT_SILENT FALSE - -#define GST_CAIRO_TEXT_OVERLAY_DEFAULT_SCALE 20.0 - -static GstStaticPadTemplate cairo_text_overlay_src_template_factory = -GST_STATIC_PAD_TEMPLATE ("src", - GST_PAD_SRC, - GST_PAD_ALWAYS, - GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420")) - ); - -static GstStaticPadTemplate video_sink_template_factory = -GST_STATIC_PAD_TEMPLATE ("video_sink", - GST_PAD_SINK, - GST_PAD_ALWAYS, - GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420")) - ); - -static GstStaticPadTemplate text_sink_template_factory = -GST_STATIC_PAD_TEMPLATE ("text_sink", - GST_PAD_SINK, - GST_PAD_ALWAYS, - GST_STATIC_CAPS ("text/plain") - ); - -static void gst_text_overlay_set_property (GObject * object, - guint prop_id, const GValue * value, GParamSpec * pspec); -static GstStateChangeReturn gst_text_overlay_change_state (GstElement * element, - GstStateChange transition); -static GstCaps *gst_text_overlay_getcaps (GstPad * pad); -static gboolean gst_text_overlay_setcaps (GstPad * pad, GstCaps * caps); -static GstPadLinkReturn gst_text_overlay_text_pad_linked (GstPad * pad, - GstPad * peer); -static void gst_text_overlay_text_pad_unlinked (GstPad * pad); -static GstFlowReturn gst_text_overlay_collected (GstCollectPads * pads, - gpointer data); -static void gst_text_overlay_finalize (GObject * object); -static void gst_text_overlay_font_init (GstCairoTextOverlay * overlay); -static gboolean gst_text_overlay_src_event (GstPad * pad, GstEvent * event); -static gboolean gst_text_overlay_video_event (GstPad * pad, GstEvent * event); - -/* These macros are adapted from videotestsrc.c */ -#define I420_Y_ROWSTRIDE(width) (GST_ROUND_UP_4(width)) -#define I420_U_ROWSTRIDE(width) (GST_ROUND_UP_8(width)/2) -#define I420_V_ROWSTRIDE(width) ((GST_ROUND_UP_8(I420_Y_ROWSTRIDE(width)))/2) - -#define I420_Y_OFFSET(w,h) (0) -#define I420_U_OFFSET(w,h) (I420_Y_OFFSET(w,h)+(I420_Y_ROWSTRIDE(w)*GST_ROUND_UP_2(h))) -#define I420_V_OFFSET(w,h) (I420_U_OFFSET(w,h)+(I420_U_ROWSTRIDE(w)*GST_ROUND_UP_2(h)/2)) - -#define I420_SIZE(w,h) (I420_V_OFFSET(w,h)+(I420_V_ROWSTRIDE(w)*GST_ROUND_UP_2(h)/2)) - -GST_BOILERPLATE (GstCairoTextOverlay, gst_text_overlay, GstElement, - GST_TYPE_ELEMENT); - -static void -gst_text_overlay_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 (&cairo_text_overlay_src_template_factory)); - gst_element_class_add_pad_template (element_class, - gst_static_pad_template_get (&video_sink_template_factory)); - gst_element_class_add_pad_template (element_class, - gst_static_pad_template_get (&text_sink_template_factory)); - - gst_element_class_set_static_metadata (element_class, "Text overlay", - "Filter/Editor/Video", - "Adds text strings on top of a video buffer", - "David Schleef "); -} - -static void -gst_text_overlay_class_init (GstCairoTextOverlayClass * klass) -{ - GObjectClass *gobject_class; - GstElementClass *gstelement_class; - - gobject_class = (GObjectClass *) klass; - gstelement_class = (GstElementClass *) klass; - - gobject_class->finalize = gst_text_overlay_finalize; - gobject_class->set_property = gst_text_overlay_set_property; - - gstelement_class->change_state = - GST_DEBUG_FUNCPTR (gst_text_overlay_change_state); - - g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_TEXT, - g_param_spec_string ("text", "text", - "Text to be display.", "", - G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS)); - g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SHADING, - g_param_spec_boolean ("shaded-background", "shaded background", - "Whether to shade the background under the text area", FALSE, - G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS)); - g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_VALIGN, - g_param_spec_string ("valign", "vertical alignment", - "Vertical alignment of the text. " - "Can be either 'baseline', 'bottom', or 'top'", - "baseline", G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS)); - g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_HALIGN, - g_param_spec_string ("halign", "horizontal alignment", - "Horizontal alignment of the text. " - "Can be either 'left', 'right', or 'center'", - "center", G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS)); - g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_XPAD, - g_param_spec_int ("xpad", "horizontal paddding", - "Horizontal paddding when using left/right alignment", - G_MININT, G_MAXINT, DEFAULT_XPAD, - G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS)); - g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_YPAD, - g_param_spec_int ("ypad", "vertical padding", - "Vertical padding when using top/bottom alignment", - G_MININT, G_MAXINT, DEFAULT_YPAD, - G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS)); - g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DELTAX, - g_param_spec_int ("deltax", "X position modifier", - "Shift X position to the left or to the right. Unit is pixels.", - G_MININT, G_MAXINT, 0, G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS)); - g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DELTAY, - g_param_spec_int ("deltay", "Y position modifier", - "Shift Y position up or down. Unit is pixels.", - G_MININT, G_MAXINT, 0, G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS)); - g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_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)); - /* FIXME 0.11: rename to "visible" or "text-visible" or "render-text" */ - g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SILENT, - g_param_spec_boolean ("silent", "silent", - "Whether to render the text string", - DEFAULT_SILENT, G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS)); -} - -static void -gst_text_overlay_finalize (GObject * object) -{ - GstCairoTextOverlay *overlay = GST_CAIRO_TEXT_OVERLAY (object); - - gst_collect_pads_stop (overlay->collect); - gst_object_unref (overlay->collect); - - g_free (overlay->text_fill_image); - g_free (overlay->text_outline_image); - - g_free (overlay->default_text); - g_free (overlay->font); - - G_OBJECT_CLASS (parent_class)->finalize (object); -} - -static void -gst_text_overlay_init (GstCairoTextOverlay * overlay, - GstCairoTextOverlayClass * klass) -{ - /* video sink */ - overlay->video_sinkpad = - gst_pad_new_from_static_template (&video_sink_template_factory, - "video_sink"); - gst_pad_set_getcaps_function (overlay->video_sinkpad, - GST_DEBUG_FUNCPTR (gst_text_overlay_getcaps)); - gst_pad_set_setcaps_function (overlay->video_sinkpad, - GST_DEBUG_FUNCPTR (gst_text_overlay_setcaps)); - gst_element_add_pad (GST_ELEMENT (overlay), overlay->video_sinkpad); - - /* text sink */ - overlay->text_sinkpad = - gst_pad_new_from_static_template (&text_sink_template_factory, - "text_sink"); - gst_pad_set_link_function (overlay->text_sinkpad, - GST_DEBUG_FUNCPTR (gst_text_overlay_text_pad_linked)); - gst_pad_set_unlink_function (overlay->text_sinkpad, - GST_DEBUG_FUNCPTR (gst_text_overlay_text_pad_unlinked)); - gst_element_add_pad (GST_ELEMENT (overlay), overlay->text_sinkpad); - - /* (video) source */ - overlay->srcpad = - gst_pad_new_from_static_template - (&cairo_text_overlay_src_template_factory, "src"); - gst_pad_set_getcaps_function (overlay->srcpad, - GST_DEBUG_FUNCPTR (gst_text_overlay_getcaps)); - gst_pad_set_event_function (overlay->srcpad, - GST_DEBUG_FUNCPTR (gst_text_overlay_src_event)); - gst_element_add_pad (GST_ELEMENT (overlay), overlay->srcpad); - - overlay->halign = GST_CAIRO_TEXT_OVERLAY_HALIGN_CENTER; - overlay->valign = GST_CAIRO_TEXT_OVERLAY_VALIGN_BASELINE; - overlay->xpad = DEFAULT_XPAD; - overlay->ypad = DEFAULT_YPAD; - overlay->deltax = 0; - overlay->deltay = 0; - - overlay->default_text = g_strdup (""); - overlay->need_render = TRUE; - - overlay->font = g_strdup (DEFAULT_FONT); - gst_text_overlay_font_init (overlay); - - overlay->silent = DEFAULT_SILENT; - - overlay->fps_n = 0; - overlay->fps_d = 1; - - overlay->collect = gst_collect_pads_new (); - - gst_collect_pads_set_function (overlay->collect, - GST_DEBUG_FUNCPTR (gst_text_overlay_collected), overlay); - - overlay->video_collect_data = gst_collect_pads_add_pad (overlay->collect, - overlay->video_sinkpad, sizeof (GstCollectData), NULL, TRUE); - - /* FIXME: hacked way to override/extend the event function of - * GstCollectPads; because it sets its own event function giving the - * element no access to events. Nicked from avimux. */ - overlay->collect_event = - (GstPadEventFunction) GST_PAD_EVENTFUNC (overlay->video_sinkpad); - gst_pad_set_event_function (overlay->video_sinkpad, - GST_DEBUG_FUNCPTR (gst_text_overlay_video_event)); - - /* text pad will be added when it is linked */ - overlay->text_collect_data = NULL; -} - -static void -gst_text_overlay_font_init (GstCairoTextOverlay * overlay) -{ - cairo_font_extents_t font_extents; - cairo_surface_t *surface; - cairo_t *cr; - gchar *font_desc, *sep; - - font_desc = g_ascii_strdown (overlay->font, -1); - - /* cairo_select_font_face() does not parse the size at the end, so we have - * to do that ourselves; same for slate and weight */ - sep = MAX (strrchr (font_desc, ' '), strrchr (font_desc, ',')); - if (sep != NULL && g_strtod (sep, NULL) > 0.0) { - /* there may be a suffix such as 'px', but we just ignore that for now */ - overlay->scale = g_strtod (sep, NULL); - } else { - overlay->scale = GST_CAIRO_TEXT_OVERLAY_DEFAULT_SCALE; - } - if (strstr (font_desc, "bold")) - overlay->weight = CAIRO_FONT_WEIGHT_BOLD; - else - overlay->weight = CAIRO_FONT_WEIGHT_NORMAL; - - if (strstr (font_desc, "italic")) - overlay->slant = CAIRO_FONT_SLANT_ITALIC; - else if (strstr (font_desc, "oblique")) - overlay->slant = CAIRO_FONT_SLANT_OBLIQUE; - else - overlay->slant = CAIRO_FONT_SLANT_NORMAL; - - GST_LOG_OBJECT (overlay, "Font desc: '%s', scale=%f, weight=%d, slant=%d", - overlay->font, overlay->scale, overlay->weight, overlay->slant); - - surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 256, 256); - cr = cairo_create (surface); - - cairo_select_font_face (cr, overlay->font, overlay->slant, overlay->weight); - cairo_set_font_size (cr, overlay->scale); - - /* this has a static leak: - * http://lists.freedesktop.org/archives/cairo/2007-May/010623.html - */ - cairo_font_extents (cr, &font_extents); - overlay->font_height = GST_ROUND_UP_2 ((guint) font_extents.height); - overlay->need_render = TRUE; - - cairo_destroy (cr); - cairo_surface_destroy (surface); - g_free (font_desc); -} - -static void -gst_text_overlay_set_property (GObject * object, guint prop_id, - const GValue * value, GParamSpec * pspec) -{ - GstCairoTextOverlay *overlay = GST_CAIRO_TEXT_OVERLAY (object); - - GST_OBJECT_LOCK (overlay); - - switch (prop_id) { - case ARG_TEXT:{ - g_free (overlay->default_text); - overlay->default_text = g_value_dup_string (value); - break; - } - case ARG_SHADING:{ - overlay->want_shading = g_value_get_boolean (value); - break; - } - case ARG_VALIGN:{ - const gchar *s = g_value_get_string (value); - - if (g_ascii_strcasecmp (s, "baseline") == 0) - overlay->valign = GST_CAIRO_TEXT_OVERLAY_VALIGN_BASELINE; - else if (g_ascii_strcasecmp (s, "bottom") == 0) - overlay->valign = GST_CAIRO_TEXT_OVERLAY_VALIGN_BOTTOM; - else if (g_ascii_strcasecmp (s, "top") == 0) - overlay->valign = GST_CAIRO_TEXT_OVERLAY_VALIGN_TOP; - else - g_warning ("Invalid 'valign' property value: %s", s); - break; - } - case ARG_HALIGN:{ - const gchar *s = g_value_get_string (value); - - if (g_ascii_strcasecmp (s, "left") == 0) - overlay->halign = GST_CAIRO_TEXT_OVERLAY_HALIGN_LEFT; - else if (g_ascii_strcasecmp (s, "right") == 0) - overlay->halign = GST_CAIRO_TEXT_OVERLAY_HALIGN_RIGHT; - else if (g_ascii_strcasecmp (s, "center") == 0) - overlay->halign = GST_CAIRO_TEXT_OVERLAY_HALIGN_CENTER; - else - g_warning ("Invalid 'halign' property value: %s", s); - break; - } - case ARG_XPAD:{ - overlay->xpad = g_value_get_int (value); - break; - } - case ARG_YPAD:{ - overlay->ypad = g_value_get_int (value); - break; - } - case ARG_DELTAX:{ - overlay->deltax = g_value_get_int (value); - break; - } - case ARG_DELTAY:{ - overlay->deltay = g_value_get_int (value); - break; - } - case ARG_FONT_DESC:{ - g_free (overlay->font); - overlay->font = g_value_dup_string (value); - if (overlay->font == NULL) - overlay->font = g_strdup (DEFAULT_FONT); - gst_text_overlay_font_init (overlay); - break; - } - case ARG_SILENT: - overlay->silent = g_value_get_boolean (value); - break; - default:{ - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); - break; - } - } - - overlay->need_render = TRUE; - - GST_OBJECT_UNLOCK (overlay); -} - -static void -gst_text_overlay_render_text (GstCairoTextOverlay * overlay, - const gchar * text, gint textlen) -{ - cairo_text_extents_t extents; - cairo_surface_t *surface; - cairo_t *cr; - gchar *string; - double x, y; - - if (overlay->silent) { - GST_DEBUG_OBJECT (overlay, "Silent mode, not rendering"); - return; - } - - if (textlen < 0) - textlen = strlen (text); - - if (!overlay->need_render) { - GST_DEBUG ("Using previously rendered text."); - g_return_if_fail (overlay->text_fill_image != NULL); - g_return_if_fail (overlay->text_outline_image != NULL); - return; - } - - string = g_strndup (text, textlen); - GST_DEBUG ("Rendering text '%s' on cairo RGBA surface", string); - - overlay->text_fill_image = - g_realloc (overlay->text_fill_image, - 4 * overlay->width * overlay->font_height); - - surface = cairo_image_surface_create_for_data (overlay->text_fill_image, - CAIRO_FORMAT_ARGB32, overlay->width, overlay->font_height, - overlay->width * 4); - - cr = cairo_create (surface); - - cairo_select_font_face (cr, overlay->font, overlay->slant, overlay->weight); - cairo_set_font_size (cr, overlay->scale); - - cairo_save (cr); - cairo_rectangle (cr, 0, 0, overlay->width, overlay->font_height); - cairo_set_source_rgba (cr, 0, 0, 0, 1.0); - - cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE); - cairo_fill (cr); - cairo_restore (cr); - - cairo_save (cr); - cairo_text_extents (cr, string, &extents); - cairo_set_source_rgba (cr, 1, 1, 1, 1.0); - - switch (overlay->halign) { - case GST_CAIRO_TEXT_OVERLAY_HALIGN_LEFT: - x = overlay->xpad; - break; - case GST_CAIRO_TEXT_OVERLAY_HALIGN_CENTER: - x = (overlay->width - extents.width) / 2; - break; - case GST_CAIRO_TEXT_OVERLAY_HALIGN_RIGHT: - x = overlay->width - extents.width - overlay->xpad; - break; - default: - x = 0; - } - x += overlay->deltax; - - overlay->text_x0 = x; - overlay->text_x1 = x + extents.x_advance; - - overlay->text_dy = (extents.height + extents.y_bearing); - y = overlay->font_height - overlay->text_dy; - - cairo_move_to (cr, x, y); - cairo_show_text (cr, string); - cairo_restore (cr); - - cairo_destroy (cr); - cairo_surface_destroy (surface); - - /* ----------- */ - - overlay->text_outline_image = - g_realloc (overlay->text_outline_image, - 4 * overlay->width * overlay->font_height); - - surface = cairo_image_surface_create_for_data (overlay->text_outline_image, - CAIRO_FORMAT_ARGB32, overlay->width, overlay->font_height, - overlay->width * 4); - - cr = cairo_create (surface); - - cairo_select_font_face (cr, overlay->font, overlay->slant, overlay->weight); - cairo_set_font_size (cr, overlay->scale); - - cairo_save (cr); - cairo_rectangle (cr, 0, 0, overlay->width, overlay->font_height); - cairo_set_source_rgba (cr, 0, 0, 0, 1.0); - cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE); - cairo_fill (cr); - cairo_restore (cr); - - cairo_save (cr); - cairo_move_to (cr, x, y); - cairo_set_source_rgba (cr, 1, 1, 1, 1.0); - cairo_set_line_width (cr, 1.0); - cairo_text_path (cr, string); - cairo_stroke (cr); - cairo_restore (cr); - - g_free (string); - - cairo_destroy (cr); - cairo_surface_destroy (surface); - - overlay->need_render = FALSE; -} - -static GstCaps * -gst_text_overlay_getcaps (GstPad * pad) -{ - GstCairoTextOverlay *overlay; - GstPad *otherpad; - GstCaps *caps; - - overlay = GST_CAIRO_TEXT_OVERLAY (gst_pad_get_parent (pad)); - - if (pad == overlay->srcpad) - otherpad = overlay->video_sinkpad; - else - otherpad = overlay->srcpad; - - /* we can do what the peer can */ - caps = gst_pad_peer_get_caps (otherpad); - if (caps) { - GstCaps *temp; - const GstCaps *templ; - - GST_DEBUG_OBJECT (pad, "peer caps %" GST_PTR_FORMAT, caps); - - /* filtered against our padtemplate */ - templ = gst_pad_get_pad_template_caps (otherpad); - GST_DEBUG_OBJECT (pad, "our template %" GST_PTR_FORMAT, templ); - temp = gst_caps_intersect (caps, templ); - GST_DEBUG_OBJECT (pad, "intersected %" GST_PTR_FORMAT, temp); - gst_caps_unref (caps); - /* this is what we can do */ - caps = temp; - } else { - /* no peer, our padtemplate is enough then */ - caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad)); - } - - GST_DEBUG_OBJECT (overlay, "returning %" GST_PTR_FORMAT, caps); - - gst_object_unref (overlay); - - return caps; -} - -/* FIXME: upstream nego (e.g. when the video window is resized) */ - -static gboolean -gst_text_overlay_setcaps (GstPad * pad, GstCaps * caps) -{ - GstCairoTextOverlay *overlay; - GstStructure *structure; - gboolean ret = FALSE; - const GValue *fps; - - if (!GST_PAD_IS_SINK (pad)) - return TRUE; - - g_return_val_if_fail (gst_caps_is_fixed (caps), FALSE); - - overlay = GST_CAIRO_TEXT_OVERLAY (gst_pad_get_parent (pad)); - - overlay->width = 0; - overlay->height = 0; - structure = gst_caps_get_structure (caps, 0); - fps = gst_structure_get_value (structure, "framerate"); - - if (gst_structure_get_int (structure, "width", &overlay->width) && - gst_structure_get_int (structure, "height", &overlay->height) && - fps != NULL) { - ret = gst_pad_set_caps (overlay->srcpad, caps); - } - - overlay->fps_n = gst_value_get_fraction_numerator (fps); - overlay->fps_d = gst_value_get_fraction_denominator (fps); - - gst_object_unref (overlay); - - return ret; -} - -static GstPadLinkReturn -gst_text_overlay_text_pad_linked (GstPad * pad, GstPad * peer) -{ - GstCairoTextOverlay *overlay; - - overlay = GST_CAIRO_TEXT_OVERLAY (GST_PAD_PARENT (pad)); - - GST_DEBUG_OBJECT (overlay, "Text pad linked"); - - if (overlay->text_collect_data == NULL) { - overlay->text_collect_data = gst_collect_pads_add_pad (overlay->collect, - overlay->text_sinkpad, sizeof (GstCollectData), NULL, TRUE); - } - - overlay->need_render = TRUE; - - return GST_PAD_LINK_OK; -} - -static void -gst_text_overlay_text_pad_unlinked (GstPad * pad) -{ - GstCairoTextOverlay *overlay; - - /* don't use gst_pad_get_parent() here, will deadlock */ - overlay = GST_CAIRO_TEXT_OVERLAY (GST_PAD_PARENT (pad)); - - GST_DEBUG_OBJECT (overlay, "Text pad unlinked"); - - if (overlay->text_collect_data) { - gst_collect_pads_remove_pad (overlay->collect, overlay->text_sinkpad); - overlay->text_collect_data = NULL; - } - - overlay->need_render = TRUE; -} - -#define BOX_SHADING_VAL -80 -#define BOX_XPAD 6 -#define BOX_YPAD 6 - -static inline void -gst_text_overlay_shade_y (GstCairoTextOverlay * overlay, guchar * dest, - guint dest_stride, gint y0, gint y1) -{ - gint i, j, x0, x1; - - x0 = CLAMP (overlay->text_x0 - BOX_XPAD, 0, overlay->width); - x1 = CLAMP (overlay->text_x1 + BOX_XPAD, 0, overlay->width); - - y0 = CLAMP (y0 - BOX_YPAD, 0, overlay->height); - y1 = CLAMP (y1 + BOX_YPAD, 0, overlay->height); - - for (i = y0; i < y1; ++i) { - for (j = x0; j < x1; ++j) { - gint y = dest[(i * dest_stride) + j] + BOX_SHADING_VAL; - - dest[(i * dest_stride) + j] = CLAMP (y, 0, 255); - } - } -} - -static inline void -gst_text_overlay_blit_1 (GstCairoTextOverlay * overlay, guchar * dest, - guchar * text_image, gint val, guint dest_stride, gint y0) -{ - gint i, j; - gint x, a, y; - gint y1; - - y = val; - y0 = MIN (y0, overlay->height); - y1 = MIN (y0 + overlay->font_height, overlay->height); - - for (i = y0; i < y1; i++) { - for (j = 0; j < overlay->width; j++) { - x = dest[i * dest_stride + j]; - a = text_image[4 * ((i - y0) * overlay->width + j) + 1]; - dest[i * dest_stride + j] = (y * a + x * (255 - a)) / 255; - } - } -} - -static inline void -gst_text_overlay_blit_sub2x2 (GstCairoTextOverlay * overlay, guchar * dest, - guchar * text_image, gint val, guint dest_stride, gint y0) -{ - gint i, j; - gint x, a, y; - gint y1; - - y0 = MIN (y0, overlay->height); - y1 = MIN (y0 + overlay->font_height, overlay->height); - - y = val; - - for (i = y0; i < y1; i += 2) { - for (j = 0; j < overlay->width; j += 2) { - x = dest[(i / 2) * dest_stride + j / 2]; - a = (text_image[4 * ((i - y0) * overlay->width + j) + 1] + - text_image[4 * ((i - y0) * overlay->width + j + 1) + 1] + - text_image[4 * ((i - y0 + 1) * overlay->width + j) + 1] + - text_image[4 * ((i - y0 + 1) * overlay->width + j + 1) + 1] + 2) / 4; - dest[(i / 2) * dest_stride + j / 2] = (y * a + x * (255 - a)) / 255; - } - } -} - - -static GstFlowReturn -gst_text_overlay_push_frame (GstCairoTextOverlay * overlay, - GstBuffer * video_frame) -{ - guchar *y, *u, *v; - gint ypos; - - video_frame = gst_buffer_make_writable (video_frame); - - switch (overlay->valign) { - case GST_CAIRO_TEXT_OVERLAY_VALIGN_BOTTOM: - ypos = overlay->height - overlay->font_height - overlay->ypad; - break; - case GST_CAIRO_TEXT_OVERLAY_VALIGN_BASELINE: - ypos = overlay->height - (overlay->font_height - overlay->text_dy) - - overlay->ypad; - break; - case GST_CAIRO_TEXT_OVERLAY_VALIGN_TOP: - ypos = overlay->ypad; - break; - default: - ypos = overlay->ypad; - break; - } - - ypos += overlay->deltay; - - y = GST_BUFFER_DATA (video_frame); - u = y + I420_U_OFFSET (overlay->width, overlay->height); - v = y + I420_V_OFFSET (overlay->width, overlay->height); - - /* shaded background box */ - if (overlay->want_shading) { - gst_text_overlay_shade_y (overlay, - y, I420_Y_ROWSTRIDE (overlay->width), - ypos + overlay->text_dy, ypos + overlay->font_height); - } - - /* blit outline text on video image */ - gst_text_overlay_blit_1 (overlay, - y, - overlay->text_outline_image, 0, I420_Y_ROWSTRIDE (overlay->width), ypos); - gst_text_overlay_blit_sub2x2 (overlay, - u, - overlay->text_outline_image, 128, I420_U_ROWSTRIDE (overlay->width), - ypos); - gst_text_overlay_blit_sub2x2 (overlay, v, overlay->text_outline_image, 128, - I420_V_ROWSTRIDE (overlay->width), ypos); - - /* blit text on video image */ - gst_text_overlay_blit_1 (overlay, - y, - overlay->text_fill_image, 255, I420_Y_ROWSTRIDE (overlay->width), ypos); - gst_text_overlay_blit_sub2x2 (overlay, - u, - overlay->text_fill_image, 128, I420_U_ROWSTRIDE (overlay->width), ypos); - gst_text_overlay_blit_sub2x2 (overlay, - v, - overlay->text_fill_image, 128, I420_V_ROWSTRIDE (overlay->width), ypos); - - return gst_pad_push (overlay->srcpad, video_frame); -} - -static void -gst_text_overlay_pop_video (GstCairoTextOverlay * overlay) -{ - GstBuffer *buf; - - buf = gst_collect_pads_pop (overlay->collect, overlay->video_collect_data); - g_return_if_fail (buf != NULL); - gst_buffer_unref (buf); -} - -static void -gst_text_overlay_pop_text (GstCairoTextOverlay * overlay) -{ - GstBuffer *buf; - - if (overlay->text_collect_data) { - buf = gst_collect_pads_pop (overlay->collect, overlay->text_collect_data); - g_return_if_fail (buf != NULL); - gst_buffer_unref (buf); - } - - overlay->need_render = TRUE; -} - -/* This function is called when there is data on all pads */ -static GstFlowReturn -gst_text_overlay_collected (GstCollectPads * pads, gpointer data) -{ - GstCairoTextOverlay *overlay; - GstFlowReturn ret = GST_FLOW_OK; - GstClockTime now, txt_end, frame_end; - GstBuffer *video_frame = NULL; - GstBuffer *text_buf = NULL; - gchar *text; - gint text_len; - - overlay = GST_CAIRO_TEXT_OVERLAY (data); - - GST_DEBUG ("Collecting"); - - video_frame = gst_collect_pads_peek (overlay->collect, - overlay->video_collect_data); - - /* send EOS if video stream EOSed regardless of text stream */ - if (video_frame == NULL) { - GST_DEBUG ("Video stream at EOS"); - if (overlay->text_collect_data) { - text_buf = gst_collect_pads_pop (overlay->collect, - overlay->text_collect_data); - } - gst_pad_push_event (overlay->srcpad, gst_event_new_eos ()); - ret = GST_FLOW_EOS; - goto done; - } - - if (GST_BUFFER_TIMESTAMP (video_frame) == GST_CLOCK_TIME_NONE) { - g_warning ("%s: video frame has invalid timestamp", G_STRLOC); - } - - now = GST_BUFFER_TIMESTAMP (video_frame); - - if (GST_BUFFER_DURATION (video_frame) != GST_CLOCK_TIME_NONE) { - frame_end = now + GST_BUFFER_DURATION (video_frame); - } else if (overlay->fps_n > 0) { - frame_end = now + gst_util_uint64_scale_int (GST_SECOND, - overlay->fps_d, overlay->fps_n); - } else { - /* magic value, does not really matter since texts - * tend to span quite a few frames in practice anyway */ - frame_end = now + GST_SECOND / 25; - } - - GST_DEBUG ("Got video frame: %" GST_TIME_FORMAT " - %" GST_TIME_FORMAT, - GST_TIME_ARGS (now), GST_TIME_ARGS (frame_end)); - - /* text pad not linked? */ - if (overlay->text_collect_data == NULL) { - GST_DEBUG ("Text pad not linked, rendering default text: '%s'", - GST_STR_NULL (overlay->default_text)); - if (overlay->default_text && *overlay->default_text != '\0') { - gst_text_overlay_render_text (overlay, overlay->default_text, -1); - ret = gst_text_overlay_push_frame (overlay, video_frame); - } else { - ret = gst_pad_push (overlay->srcpad, video_frame); - } - gst_text_overlay_pop_video (overlay); - video_frame = NULL; - goto done; - } - - text_buf = gst_collect_pads_peek (overlay->collect, - overlay->text_collect_data); - - /* just push the video frame if the text stream has EOSed */ - if (text_buf == NULL) { - GST_DEBUG ("Text pad EOSed, just pushing video frame as is"); - ret = gst_pad_push (overlay->srcpad, video_frame); - gst_text_overlay_pop_video (overlay); - video_frame = NULL; - goto done; - } - - /* if the text buffer isn't stamped right, pop it off the - * queue and display it for the current video frame only */ - if (GST_BUFFER_TIMESTAMP (text_buf) == GST_CLOCK_TIME_NONE || - GST_BUFFER_DURATION (text_buf) == GST_CLOCK_TIME_NONE) { - GST_WARNING ("Got text buffer with invalid time stamp or duration"); - gst_text_overlay_pop_text (overlay); - GST_BUFFER_TIMESTAMP (text_buf) = now; - GST_BUFFER_DURATION (text_buf) = frame_end - now; - } - - txt_end = GST_BUFFER_TIMESTAMP (text_buf) + GST_BUFFER_DURATION (text_buf); - - GST_DEBUG ("Got text buffer: %" GST_TIME_FORMAT " - %" GST_TIME_FORMAT, - GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (text_buf)), GST_TIME_ARGS (txt_end)); - - /* if the text buffer is too old, pop it off the - * queue and return so we get a new one next time */ - if (txt_end < now) { - GST_DEBUG ("Text buffer too old, popping off the queue"); - gst_text_overlay_pop_text (overlay); - ret = GST_FLOW_OK; - goto done; - } - - /* if the video frame ends before the text even starts, - * just push it out as is and pop it off the queue */ - if (frame_end < GST_BUFFER_TIMESTAMP (text_buf)) { - GST_DEBUG ("Video buffer before text, pushing out and popping off queue"); - ret = gst_pad_push (overlay->srcpad, video_frame); - gst_text_overlay_pop_video (overlay); - video_frame = NULL; - goto done; - } - - /* text duration overlaps video frame duration */ - text = g_strndup ((gchar *) GST_BUFFER_DATA (text_buf), - GST_BUFFER_SIZE (text_buf)); - g_strdelimit (text, "\n\r\t", ' '); - text_len = strlen (text); - - if (text_len > 0) { - GST_DEBUG ("Rendering text '%*s'", text_len, text);; - gst_text_overlay_render_text (overlay, text, text_len); - } else { - GST_DEBUG ("No text to render (empty buffer)"); - gst_text_overlay_render_text (overlay, " ", 1); - } - - g_free (text); - - gst_text_overlay_pop_video (overlay); - ret = gst_text_overlay_push_frame (overlay, video_frame); - video_frame = NULL; - goto done; - -done: - { - if (text_buf) - gst_buffer_unref (text_buf); - - if (video_frame) - gst_buffer_unref (video_frame); - - return ret; - } -} - -static gboolean -gst_text_overlay_src_event (GstPad * pad, GstEvent * event) -{ - GstCairoTextOverlay *overlay = - GST_CAIRO_TEXT_OVERLAY (gst_pad_get_parent (pad)); - gboolean ret = TRUE; - - /* forward events to the video sink, and, if it is linked, the text sink */ - if (overlay->text_collect_data) { - gst_event_ref (event); - ret &= gst_pad_push_event (overlay->text_sinkpad, event); - } - ret &= gst_pad_push_event (overlay->video_sinkpad, event); - - gst_object_unref (overlay); - return ret; -} - -static gboolean -gst_text_overlay_video_event (GstPad * pad, GstEvent * event) -{ - gboolean ret = FALSE; - GstCairoTextOverlay *overlay = NULL; - - overlay = GST_CAIRO_TEXT_OVERLAY (gst_pad_get_parent (pad)); - - if (GST_EVENT_TYPE (event) == GST_EVENT_NEWSEGMENT) { - GST_DEBUG_OBJECT (overlay, - "received new segment on video sink pad, forwarding"); - gst_event_ref (event); - gst_pad_push_event (overlay->srcpad, event); - } - - /* now GstCollectPads can take care of the rest, e.g. EOS */ - ret = overlay->collect_event (pad, event); - gst_object_unref (overlay); - return ret; -} - -static GstStateChangeReturn -gst_text_overlay_change_state (GstElement * element, GstStateChange transition) -{ - GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS; - GstCairoTextOverlay *overlay = GST_CAIRO_TEXT_OVERLAY (element); - - switch (transition) { - case GST_STATE_CHANGE_READY_TO_PAUSED: - gst_collect_pads_start (overlay->collect); - break; - case GST_STATE_CHANGE_PAUSED_TO_READY: - /* need to unblock the collectpads before calling the - * parent change_state so that streaming can finish */ - gst_collect_pads_stop (overlay->collect); - break; - default: - break; - } - - ret = parent_class->change_state (element, transition); - if (ret == GST_STATE_CHANGE_FAILURE) - return ret; - - switch (transition) { - default: - break; - } - - return ret; -} diff --git a/ext/cairo/gsttextoverlay.h b/ext/cairo/gsttextoverlay.h deleted file mode 100644 index 34763194f5..0000000000 --- a/ext/cairo/gsttextoverlay.h +++ /dev/null @@ -1,90 +0,0 @@ - -#ifndef __GST_CAIRO_TEXT_OVERLAY_H__ -#define __GST_CAIRO_TEXT_OVERLAY_H__ - -#include -#include - -G_BEGIN_DECLS - -#define GST_TYPE_CAIRO_TEXT_OVERLAY (gst_text_overlay_get_type()) -#define GST_CAIRO_TEXT_OVERLAY(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),\ - GST_TYPE_CAIRO_TEXT_OVERLAY, GstCairoTextOverlay)) -#define GST_CAIRO_TEXT_OVERLAY_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),\ - GST_TYPE_CAIRO_TEXT_OVERLAY, GstCairoTextOverlayClass)) -#define GST_CAIRO_TEXT_OVERLAY_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj),\ - GST_TYPE_CAIRO_TEXT_OVERLAY, GstCairoTextOverlayClass)) -#define GST_IS_CAIRO_TEXT_OVERLAY(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),\ - GST_TYPE_CAIRO_TEXT_OVERLAY)) -#define GST_IS_CAIRO_TEXT_OVERLAY_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),\ - GST_TYPE_CAIRO_TEXT_OVERLAY)) - -typedef struct _GstCairoTextOverlay GstCairoTextOverlay; -typedef struct _GstCairoTextOverlayClass GstCairoTextOverlayClass; - -typedef enum _GstCairoTextOverlayVAlign GstCairoTextOverlayVAlign; -typedef enum _GstCairoTextOverlayHAlign GstCairoTextOverlayHAlign; - -enum _GstCairoTextOverlayVAlign { - GST_CAIRO_TEXT_OVERLAY_VALIGN_BASELINE, - GST_CAIRO_TEXT_OVERLAY_VALIGN_BOTTOM, - GST_CAIRO_TEXT_OVERLAY_VALIGN_TOP -}; - -enum _GstCairoTextOverlayHAlign { - GST_CAIRO_TEXT_OVERLAY_HALIGN_LEFT, - GST_CAIRO_TEXT_OVERLAY_HALIGN_CENTER, - GST_CAIRO_TEXT_OVERLAY_HALIGN_RIGHT -}; - - -struct _GstCairoTextOverlay { - GstElement element; - - GstPad *video_sinkpad; - GstPad *text_sinkpad; - GstPad *srcpad; - - GstCollectPads *collect; - GstCollectData *video_collect_data; - GstCollectData *text_collect_data; - GstPadEventFunction collect_event; - - gint width; - gint height; - gint fps_n; - gint fps_d; - - GstCairoTextOverlayVAlign valign; - GstCairoTextOverlayHAlign halign; - gint xpad; - gint ypad; - gint deltax; - gint deltay; - gchar *default_text; - gboolean want_shading; - - guchar *text_fill_image; - guchar *text_outline_image; - gint font_height; - gint text_x0, text_x1; /* start/end x position of text */ - gint text_dy; - - gboolean need_render; - - gchar *font; - gint slant; - gint weight; - gdouble scale; - gboolean silent; -}; - -struct _GstCairoTextOverlayClass { - GstElementClass parent_class; -}; - -GType gst_text_overlay_get_type (void); - -G_END_DECLS - -#endif /* __GST_CAIRO_TEXT_OVERLAY_H */ diff --git a/ext/cairo/gsttimeoverlay.c b/ext/cairo/gsttimeoverlay.c deleted file mode 100644 index 7c70b07148..0000000000 --- a/ext/cairo/gsttimeoverlay.c +++ /dev/null @@ -1,316 +0,0 @@ -/* GStreamer - * Copyright (C) <1999> Erik Walthinsen - * Copyright (C) <2003> David Schleef - * - * 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., 51 Franklin St, Fifth Floor, - * Boston, MA 02110-1301, USA. - */ - -/** - * SECTION:element-cairotimeoverlay - * - * cairotimeoverlay renders the buffer timestamp for each frame on top of - * the frame. - * - * - * Example launch line - * |[ - * gst-launch-1.0 videotestsrc ! cairotimeoverlay ! autovideosink - * ]| - * - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include - -#include - -#include - -#include - -#include - -static GstStaticPadTemplate gst_cairo_time_overlay_src_template = -GST_STATIC_PAD_TEMPLATE ("src", - GST_PAD_SRC, - GST_PAD_ALWAYS, - GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420")) - ); - -static GstStaticPadTemplate gst_cairo_time_overlay_sink_template = -GST_STATIC_PAD_TEMPLATE ("sink", - GST_PAD_SINK, - GST_PAD_ALWAYS, - GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420")) - ); - -static GstBaseTransformClass *parent_class = NULL; - -static void -gst_cairo_time_overlay_update_font_height (GstCairoTimeOverlay * timeoverlay) -{ - gint width, height; - cairo_surface_t *font_surface; - cairo_t *font_cairo; - cairo_font_extents_t font_extents; - - width = timeoverlay->width; - height = timeoverlay->height; - - font_surface = - cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height); - font_cairo = cairo_create (font_surface); - cairo_surface_destroy (font_surface); - font_surface = NULL; - - cairo_select_font_face (font_cairo, "monospace", 0, 0); - cairo_set_font_size (font_cairo, 20); - cairo_font_extents (font_cairo, &font_extents); - timeoverlay->text_height = font_extents.height; - GST_DEBUG_OBJECT (timeoverlay, "font height is %f", font_extents.height); - cairo_destroy (font_cairo); - font_cairo = NULL; -} - -static gboolean -gst_cairo_time_overlay_set_caps (GstBaseTransform * btrans, GstCaps * incaps, - GstCaps * outcaps) -{ - GstCairoTimeOverlay *filter = GST_CAIRO_TIME_OVERLAY (btrans); - GstStructure *structure; - gboolean ret = FALSE; - - structure = gst_caps_get_structure (incaps, 0); - - if (gst_structure_get_int (structure, "width", &filter->width) && - gst_structure_get_int (structure, "height", &filter->height)) { - gst_cairo_time_overlay_update_font_height (filter); - ret = TRUE; - } - - return ret; -} - -/* Useful macros */ -#define GST_VIDEO_I420_Y_ROWSTRIDE(width) (GST_ROUND_UP_4(width)) -#define GST_VIDEO_I420_U_ROWSTRIDE(width) (GST_ROUND_UP_8(width)/2) -#define GST_VIDEO_I420_V_ROWSTRIDE(width) ((GST_ROUND_UP_8(GST_VIDEO_I420_Y_ROWSTRIDE(width)))/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)*GST_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)*GST_ROUND_UP_2(h)/2)) - -#define GST_VIDEO_I420_SIZE(w,h) (GST_VIDEO_I420_V_OFFSET(w,h)+(GST_VIDEO_I420_V_ROWSTRIDE(w)*GST_ROUND_UP_2(h)/2)) - -static gboolean -gst_cairo_time_overlay_get_unit_size (GstBaseTransform * btrans, GstCaps * caps, - guint * size) -{ - GstCairoTimeOverlay *filter; - GstStructure *structure; - gboolean ret = FALSE; - gint width, height; - - filter = GST_CAIRO_TIME_OVERLAY (btrans); - - structure = gst_caps_get_structure (caps, 0); - - if (gst_structure_get_int (structure, "width", &width) && - gst_structure_get_int (structure, "height", &height)) { - *size = GST_VIDEO_I420_SIZE (width, height); - ret = TRUE; - GST_DEBUG_OBJECT (filter, "our frame size is %d bytes (%dx%d)", *size, - width, height); - } - - return ret; -} - -static char * -gst_cairo_time_overlay_print_smpte_time (guint64 time) -{ - int hours; - int minutes; - int seconds; - int ms; - double x; - - x = rint (gst_util_guint64_to_gdouble (time + 500000) * 1e-6); - - hours = floor (x / (60 * 60 * 1000)); - x -= hours * 60 * 60 * 1000; - minutes = floor (x / (60 * 1000)); - x -= minutes * 60 * 1000; - seconds = floor (x / (1000)); - x -= seconds * 1000; - ms = rint (x); - - return g_strdup_printf ("%02d:%02d:%02d.%03d", hours, minutes, seconds, ms); -} - - -static GstFlowReturn -gst_cairo_time_overlay_transform (GstBaseTransform * trans, GstBuffer * in, - GstBuffer * out) -{ - GstCairoTimeOverlay *timeoverlay; - int width; - int height; - int b_width; - int stride_y, stride_u, stride_v; - char *string; - int i, j; - unsigned char *image; - cairo_text_extents_t extents; - guint8 *dest, *src; - cairo_surface_t *font_surface; - cairo_t *text_cairo; - GstFlowReturn ret = GST_FLOW_OK; - - timeoverlay = GST_CAIRO_TIME_OVERLAY (trans); - - gst_buffer_copy_metadata (out, in, GST_BUFFER_COPY_TIMESTAMPS); - - src = GST_BUFFER_DATA (in); - dest = GST_BUFFER_DATA (out); - - width = timeoverlay->width; - height = timeoverlay->height; - - /* create surface for font rendering */ - /* FIXME: preparation of the surface could also be done once when settings - * change */ - image = g_malloc (4 * width * timeoverlay->text_height); - - font_surface = - cairo_image_surface_create_for_data (image, CAIRO_FORMAT_ARGB32, width, - timeoverlay->text_height, width * 4); - text_cairo = cairo_create (font_surface); - cairo_surface_destroy (font_surface); - font_surface = NULL; - - /* we draw a rectangle because the compositing on the buffer below - * doesn't do alpha */ - cairo_save (text_cairo); - cairo_rectangle (text_cairo, 0, 0, width, timeoverlay->text_height); - cairo_set_source_rgba (text_cairo, 0, 0, 0, 1); - cairo_set_operator (text_cairo, CAIRO_OPERATOR_SOURCE); - cairo_fill (text_cairo); - cairo_restore (text_cairo); - - string = gst_cairo_time_overlay_print_smpte_time (GST_BUFFER_TIMESTAMP (in)); - cairo_save (text_cairo); - cairo_select_font_face (text_cairo, "monospace", 0, 0); - cairo_set_font_size (text_cairo, 20); - cairo_text_extents (text_cairo, string, &extents); - cairo_set_source_rgb (text_cairo, 1, 1, 1); - cairo_move_to (text_cairo, 0, timeoverlay->text_height - 2); - cairo_show_text (text_cairo, string); - g_free (string); - - cairo_restore (text_cairo); - - /* blend width; should retain a max text width so it doesn't jitter */ - b_width = extents.width; - if (b_width > width) - b_width = width; - - stride_y = GST_VIDEO_I420_Y_ROWSTRIDE (width); - stride_u = GST_VIDEO_I420_U_ROWSTRIDE (width); - stride_v = GST_VIDEO_I420_V_ROWSTRIDE (width); - - memcpy (dest, src, GST_BUFFER_SIZE (in)); - for (i = 0; i < timeoverlay->text_height; i++) { - for (j = 0; j < b_width; j++) { - ((unsigned char *) dest)[i * stride_y + j] = - image[(i * width + j) * 4 + 0]; - } - } - for (i = 0; i < timeoverlay->text_height / 2; i++) { - memset (dest + GST_VIDEO_I420_U_OFFSET (width, height) + i * stride_u, 128, - b_width / 2); - memset (dest + GST_VIDEO_I420_V_OFFSET (width, height) + i * stride_v, 128, - b_width / 2); - } - - cairo_destroy (text_cairo); - text_cairo = NULL; - g_free (image); - - return ret; -} - -static void -gst_cairo_time_overlay_base_init (gpointer g_class) -{ - GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); - - gst_element_class_set_static_metadata (element_class, "Time overlay", - "Filter/Editor/Video", - "Overlays the time on a video stream", "David Schleef "); - - gst_element_class_add_pad_template (element_class, - gst_static_pad_template_get (&gst_cairo_time_overlay_sink_template)); - gst_element_class_add_pad_template (element_class, - gst_static_pad_template_get (&gst_cairo_time_overlay_src_template)); -} - -static void -gst_cairo_time_overlay_class_init (gpointer klass, gpointer class_data) -{ - GstBaseTransformClass *trans_class; - - trans_class = (GstBaseTransformClass *) klass; - - parent_class = g_type_class_peek_parent (klass); - - trans_class->set_caps = GST_DEBUG_FUNCPTR (gst_cairo_time_overlay_set_caps); - trans_class->get_unit_size = - GST_DEBUG_FUNCPTR (gst_cairo_time_overlay_get_unit_size); - trans_class->transform = GST_DEBUG_FUNCPTR (gst_cairo_time_overlay_transform); -} - -static void -gst_cairo_time_overlay_init (GTypeInstance * instance, gpointer g_class) -{ -} - -GType -gst_cairo_time_overlay_get_type (void) -{ - static GType cairo_time_overlay_type = 0; - - if (!cairo_time_overlay_type) { - static const GTypeInfo cairo_time_overlay_info = { - sizeof (GstCairoTimeOverlayClass), - gst_cairo_time_overlay_base_init, - NULL, - gst_cairo_time_overlay_class_init, - NULL, - NULL, - sizeof (GstCairoTimeOverlay), - 0, - gst_cairo_time_overlay_init, - }; - - cairo_time_overlay_type = g_type_register_static (GST_TYPE_BASE_TRANSFORM, - "GstCairoTimeOverlay", &cairo_time_overlay_info, 0); - } - return cairo_time_overlay_type; -} diff --git a/ext/cairo/gsttimeoverlay.h b/ext/cairo/gsttimeoverlay.h deleted file mode 100644 index 63e60d758e..0000000000 --- a/ext/cairo/gsttimeoverlay.h +++ /dev/null @@ -1,59 +0,0 @@ -/* GStreamer - * Copyright (C) <1999> Erik Walthinsen - * - * 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., 51 Franklin St, Fifth Floor, - * Boston, MA 02110-1301, USA. - */ - -#ifndef __GST_CAIRO_TIME_OVERLAY_H__ -#define __GST_CAIRO_TIME_OVERLAY_H__ - -#include -#include -#include - -G_BEGIN_DECLS - -#define GST_TYPE_CAIRO_TIME_OVERLAY \ - (gst_cairo_time_overlay_get_type()) -#define GST_CAIRO_TIME_OVERLAY(obj) \ - (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CAIRO_TIME_OVERLAY,GstCairoTimeOverlay)) -#define GST_CAIRO_TIME_OVERLAY_CLASS(klass) \ - (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CAIRO_TIME_OVERLAY,GstCairoTimeOverlayClass)) -#define GST_IS_CAIRO_TIME_OVERLAY(obj) \ - (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CAIRO_TIME_OVERLAY)) -#define GST_IS_CAIRO_TIME_OVERLAY_CLASS(klass) \ - (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CAIRO_TIME_OVERLAY)) - -typedef struct _GstCairoTimeOverlay { - GstBaseTransform basetransform; - - gint width, height; - - cairo_surface_t *surface; - cairo_t *cr; - int text_height; - -} GstCairoTimeOverlay; - -typedef struct _GstCairoTimeOverlayClass { - GstBaseTransformClass parent_class; -} GstCairoTimeOverlayClass; - -GType gst_cairo_time_overlay_get_type(void); - -G_END_DECLS - -#endif /* __GST_CAIRO_TIME_OVERLAY_H__ */