mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-10-03 01:02:19 +00:00
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.
This commit is contained in:
parent
08702be68f
commit
e3dbf9e256
8 changed files with 0 additions and 1977 deletions
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@ -1,13 +1,5 @@
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plugin_LTLIBRARIES = libgstcairo.la
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# we probably don't really want to port these
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# gsttimeoverlay.h
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# gsttextoverlay.h
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# gstcairorender.h
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# gsttimeoverlay.c
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# gsttextoverlay.c
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# gstcairorender.c
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noinst_HEADERS = \
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gstcairooverlay.h
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libgstcairo_la_SOURCES = \
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@ -22,12 +22,6 @@
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#include "config.h"
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#endif
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#if 0
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#include <gsttimeoverlay.h>
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#include <gsttextoverlay.h>
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#include <gstcairorender.h>
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#endif
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#include <gstcairooverlay.h>
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#include <string.h>
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@ -38,16 +32,6 @@ GST_DEBUG_CATEGORY (cairo_debug);
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static gboolean
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plugin_init (GstPlugin * plugin)
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{
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#if 0
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/* we probably don't want to port these */
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gst_element_register (plugin, "cairotextoverlay", GST_RANK_NONE,
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GST_TYPE_CAIRO_TEXT_OVERLAY);
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gst_element_register (plugin, "cairotimeoverlay", GST_RANK_NONE,
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GST_TYPE_CAIRO_TIME_OVERLAY);
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gst_element_register (plugin, "cairorender", GST_RANK_SECONDARY,
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GST_TYPE_CAIRO_RENDER);
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#endif
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gst_element_register (plugin, "cairooverlay", GST_RANK_NONE,
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GST_TYPE_CAIRO_OVERLAY);
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@ -1,383 +0,0 @@
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/* GStreamer
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*
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* Copyright (C) 2006-2009 Lutz Mueller <lutz@topfrose.de>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/**
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* SECTION:element-cairorender
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*
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* cairorender encodes a video stream into PDF, SVG, PNG or Postscript
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*
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* <refsect2>
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* <title>Example launch line</title>
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* |[
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* gst-launch-1.0 videotestsrc num-buffers=3 ! cairorender ! "application/pdf" ! filesink location=test.pdf
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* ]|
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* </refsect2>
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*/
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#include "gstcairorender.h"
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#include <cairo.h>
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#include <cairo-features.h>
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#ifdef CAIRO_HAS_PS_SURFACE
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#include <cairo-ps.h>
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#endif
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#ifdef CAIRO_HAS_PDF_SURFACE
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#include <cairo-pdf.h>
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#endif
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#ifdef CAIRO_HAS_SVG_SURFACE
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#include <cairo-svg.h>
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#endif
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#include <gst/video/video.h>
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#include <string.h>
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GST_DEBUG_CATEGORY_STATIC (cairo_render_debug);
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#define GST_CAT_DEFAULT cairo_render_debug
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static gboolean
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gst_cairo_render_event (GstPad * pad, GstEvent * e)
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{
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GstCairoRender *c = GST_CAIRO_RENDER (GST_PAD_PARENT (pad));
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switch (GST_EVENT_TYPE (e)) {
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case GST_EVENT_EOS:
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if (c->surface)
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cairo_surface_finish (c->surface);
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break;
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default:
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break;
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}
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return gst_pad_event_default (pad, e);
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}
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static cairo_status_t
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write_func (void *closure, const unsigned char *data, unsigned int length)
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{
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GstCairoRender *c = GST_CAIRO_RENDER (closure);
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GstBuffer *buf;
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GstFlowReturn r;
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buf = gst_buffer_new ();
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gst_buffer_set_data (buf, (guint8 *) data, length);
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gst_buffer_set_caps (buf, GST_PAD_CAPS (c->src));
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if ((r = gst_pad_push (c->src, buf)) != GST_FLOW_OK) {
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GST_DEBUG_OBJECT (c, "Could not pass on buffer: %s.",
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gst_flow_get_name (r));
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return CAIRO_STATUS_WRITE_ERROR;
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}
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return CAIRO_STATUS_SUCCESS;
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}
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static cairo_status_t
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read_buffer (void *closure, unsigned char *data, unsigned int length)
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{
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GstBuffer *buf = GST_BUFFER (closure);
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if (GST_BUFFER_OFFSET (buf) + length > GST_BUFFER_SIZE (buf))
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return CAIRO_STATUS_READ_ERROR;
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memcpy (data, GST_BUFFER_DATA (buf) + GST_BUFFER_OFFSET (buf), length);
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GST_BUFFER_OFFSET (buf) += length;
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return CAIRO_STATUS_SUCCESS;
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}
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static gboolean
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gst_cairo_render_push_surface (GstCairoRender * c, cairo_surface_t * surface)
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{
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cairo_status_t s = 0;
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cairo_t *cr;
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if (!c->surface) {
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s = cairo_surface_write_to_png_stream (surface, write_func, c);
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cairo_surface_destroy (surface);
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if (s != CAIRO_STATUS_SUCCESS) {
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GST_DEBUG_OBJECT (c, "Could not create PNG stream: %s.",
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cairo_status_to_string (s));
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return FALSE;
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}
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return TRUE;
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}
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cr = cairo_create (c->surface);
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cairo_set_source_surface (cr, surface, 0, 0);
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cairo_paint (cr);
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cairo_show_page (cr);
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cairo_destroy (cr);
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cairo_surface_destroy (surface);
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return (TRUE);
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}
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static GstFlowReturn
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gst_cairo_render_chain (GstPad * pad, GstBuffer * buf)
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{
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GstCairoRender *c = GST_CAIRO_RENDER (GST_PAD_PARENT (pad));
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cairo_surface_t *s;
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gboolean success;
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if (G_UNLIKELY (c->width <= 0 || c->height <= 0 || c->stride <= 0))
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return GST_FLOW_NOT_NEGOTIATED;
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if (c->png) {
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GST_BUFFER_OFFSET (buf) = 0;
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s = cairo_image_surface_create_from_png_stream (read_buffer, buf);
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} else {
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if (c->format == CAIRO_FORMAT_ARGB32) {
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guint i, j;
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guint8 *data = GST_BUFFER_DATA (buf);
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buf = gst_buffer_make_writable (buf);
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/* Cairo ARGB is pre-multiplied with the alpha
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* value, i.e. 0x80008000 is half transparent
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* green
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*/
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for (i = 0; i < c->height; i++) {
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for (j = 0; j < c->width; j++) {
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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guint8 alpha = data[3];
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data[0] = (data[0] * alpha) >> 8;
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data[1] = (data[1] * alpha) >> 8;
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data[2] = (data[2] * alpha) >> 8;
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#else
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guint8 alpha = data[0];
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data[1] = (data[1] * alpha) >> 8;
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data[2] = (data[2] * alpha) >> 8;
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data[3] = (data[3] * alpha) >> 8;
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#endif
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data += 4;
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}
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}
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}
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s = cairo_image_surface_create_for_data (GST_BUFFER_DATA (buf),
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c->format, c->width, c->height, c->stride);
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}
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success = gst_cairo_render_push_surface (c, s);
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gst_buffer_unref (buf);
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return success ? GST_FLOW_OK : GST_FLOW_ERROR;
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}
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static gboolean
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gst_cairo_render_setcaps_sink (GstPad * pad, GstCaps * caps)
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{
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GstCairoRender *c = GST_CAIRO_RENDER (GST_PAD_PARENT (pad));
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GstStructure *s = gst_caps_get_structure (caps, 0);
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const gchar *mime = gst_structure_get_name (s);
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gint fps_n = 0, fps_d = 1;
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gint w, h;
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GST_DEBUG_OBJECT (c, "Got caps (%s).", mime);
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if ((c->png = !strcmp (mime, "image/png")))
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return TRUE;
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/* Width and height */
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if (!gst_structure_get_int (s, "width", &c->width) ||
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!gst_structure_get_int (s, "height", &c->height)) {
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GST_ERROR_OBJECT (c, "Invalid caps");
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return FALSE;
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}
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/* Colorspace */
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if (!strcmp (mime, "video/x-raw-yuv") || !strcmp (mime, "video/x-raw-grey")) {
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c->format = CAIRO_FORMAT_A8;
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c->stride = GST_ROUND_UP_4 (c->width);
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} else if (!strcmp (mime, "video/x-raw-rgb")) {
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gint bpp;
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if (!gst_structure_get_int (s, "bpp", &bpp)) {
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GST_ERROR_OBJECT (c, "Invalid caps");
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return FALSE;
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}
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c->format = (bpp == 32) ? CAIRO_FORMAT_ARGB32 : CAIRO_FORMAT_RGB24;
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c->stride = 4 * c->width;
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} else {
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GST_DEBUG_OBJECT (c, "Unknown mime type '%s'.", mime);
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return FALSE;
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}
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/* Framerate */
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gst_structure_get_fraction (s, "framerate", &fps_n, &fps_d);
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/* Create output caps */
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caps = gst_pad_get_allowed_caps (c->src);
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caps = gst_caps_make_writable (caps);
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gst_caps_truncate (caps);
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s = gst_caps_get_structure (caps, 0);
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mime = gst_structure_get_name (s);
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gst_structure_set (s, "height", G_TYPE_INT, c->height, "width", G_TYPE_INT,
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c->width, "framerate", GST_TYPE_FRACTION, fps_n, fps_d, NULL);
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if (c->surface) {
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cairo_surface_destroy (c->surface);
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c->surface = NULL;
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}
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w = c->width;
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h = c->height;
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GST_DEBUG_OBJECT (c, "Setting src caps %" GST_PTR_FORMAT, caps);
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gst_pad_set_caps (c->src, caps);
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#if CAIRO_HAS_PS_SURFACE
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if (!strcmp (mime, "application/postscript")) {
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c->surface = cairo_ps_surface_create_for_stream (write_func, c, w, h);
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} else
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#endif
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#if CAIRO_HAS_PDF_SURFACE
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if (!strcmp (mime, "application/pdf")) {
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c->surface = cairo_pdf_surface_create_for_stream (write_func, c, w, h);
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} else
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#endif
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#if CAIRO_HAS_SVG_SURFACE
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if (!strcmp (mime, "image/svg+xml")) {
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c->surface = cairo_svg_surface_create_for_stream (write_func, c, w, h);
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} else
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#endif
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{
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gst_caps_unref (caps);
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return FALSE;
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}
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gst_caps_unref (caps);
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return TRUE;
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}
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#define SIZE_CAPS "width = (int) [ 1, MAX], height = (int) [ 1, MAX] "
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#if CAIRO_HAS_PDF_SURFACE
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#define PDF_CAPS "application/pdf, " SIZE_CAPS
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#else
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#define PDF_CAPS
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#endif
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#if CAIRO_HAS_PDF_SURFACE && (CAIRO_HAS_PS_SURFACE || CAIRO_HAS_SVG_SURFACE || CAIRO_HAS_PNG_FUNCTIONS)
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#define JOIN1 ";"
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#else
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#define JOIN1
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#endif
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#if CAIRO_HAS_PS_SURFACE
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#define PS_CAPS "application/postscript, " SIZE_CAPS
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#else
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#define PS_CAPS
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#endif
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#if (CAIRO_HAS_PDF_SURFACE || CAIRO_HAS_PS_SURFACE) && (CAIRO_HAS_SVG_SURFACE || CAIRO_HAS_PNG_FUNCTIONS)
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#define JOIN2 ";"
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#else
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#define JOIN2
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#endif
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#if CAIRO_HAS_SVG_SURFACE
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#define SVG_CAPS "image/svg+xml, " SIZE_CAPS
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#else
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#define SVG_CAPS
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#endif
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#if (CAIRO_HAS_PDF_SURFACE || CAIRO_HAS_PS_SURFACE || CAIRO_HAS_SVG_SURFACE) && CAIRO_HAS_PNG_FUNCTIONS
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#define JOIN3 ";"
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#else
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#define JOIN3
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#endif
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#if CAIRO_HAS_PNG_FUNCTIONS
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#define PNG_CAPS "image/png, " SIZE_CAPS
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#define PNG_CAPS2 "; image/png, " SIZE_CAPS
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#else
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#define PNG_CAPS
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#define PNG_CAPS2
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#endif
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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#define ARGB_CAPS GST_VIDEO_CAPS_BGRx " ; " GST_VIDEO_CAPS_BGRA " ; "
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#else
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#define ARGB_CAPS GST_VIDEO_CAPS_xRGB " ; " GST_VIDEO_CAPS_ARGB " ; "
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#endif
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static GstStaticPadTemplate t_src = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC, GST_PAD_ALWAYS,
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GST_STATIC_CAPS (PDF_CAPS JOIN1 PS_CAPS JOIN2 SVG_CAPS JOIN3 PNG_CAPS));
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static GstStaticPadTemplate t_snk = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS (ARGB_CAPS
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GST_VIDEO_CAPS_YUV ("Y800") " ; "
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"video/x-raw-gray, "
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"bpp = 8, "
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"depth = 8, "
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"width = " GST_VIDEO_SIZE_RANGE ", "
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"height = " GST_VIDEO_SIZE_RANGE ", " "framerate = " GST_VIDEO_FPS_RANGE
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PNG_CAPS2));
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GST_BOILERPLATE (GstCairoRender, gst_cairo_render, GstElement,
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GST_TYPE_ELEMENT);
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static void
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gst_cairo_render_init (GstCairoRender * c, GstCairoRenderClass * klass)
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{
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/* The sink */
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c->snk = gst_pad_new_from_static_template (&t_snk, "sink");
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gst_pad_set_event_function (c->snk, gst_cairo_render_event);
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gst_pad_set_chain_function (c->snk, gst_cairo_render_chain);
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gst_pad_set_setcaps_function (c->snk, gst_cairo_render_setcaps_sink);
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gst_pad_use_fixed_caps (c->snk);
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gst_element_add_pad (GST_ELEMENT (c), c->snk);
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/* The source */
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c->src = gst_pad_new_from_static_template (&t_src, "src");
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gst_pad_use_fixed_caps (c->src);
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gst_element_add_pad (GST_ELEMENT (c), c->src);
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c->width = 0;
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c->height = 0;
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c->stride = 0;
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}
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static void
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gst_cairo_render_base_init (gpointer g_class)
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{
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GstElementClass *ec = GST_ELEMENT_CLASS (g_class);
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gst_element_class_set_static_metadata (ec, "Cairo encoder",
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"Codec/Encoder", "Encodes streams using Cairo",
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"Lutz Mueller <lutz@topfrose.de>");
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gst_element_class_add_pad_template (ec, gst_static_pad_template_get (&t_snk));
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gst_element_class_add_pad_template (ec, gst_static_pad_template_get (&t_src));
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}
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static void
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gst_cairo_render_finalize (GObject * object)
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{
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GstCairoRender *c = GST_CAIRO_RENDER (object);
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if (c->surface) {
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cairo_surface_destroy (c->surface);
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c->surface = NULL;
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}
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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gst_cairo_render_class_init (GstCairoRenderClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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gobject_class->finalize = gst_cairo_render_finalize;
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GST_DEBUG_CATEGORY_INIT (cairo_render_debug, "cairo_render", 0,
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"Cairo encoder");
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}
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@ -1,63 +0,0 @@
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/* cairorender: CAIRO plugin for GStreamer
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*
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* Copyright (C) 2006-2009 Lutz Mueller <lutz@topfrose.de>
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*
|
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* This library is free software; you can redistribute it and/or
|
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* modify it under the terms of the GNU Library General Public
|
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* 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 <gst/gst.h>
|
||||
#include <cairo.h>
|
||||
|
||||
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__ */
|
File diff suppressed because it is too large
Load diff
|
@ -1,90 +0,0 @@
|
|||
|
||||
#ifndef __GST_CAIRO_TEXT_OVERLAY_H__
|
||||
#define __GST_CAIRO_TEXT_OVERLAY_H__
|
||||
|
||||
#include <gst/gst.h>
|
||||
#include <gst/base/gstcollectpads.h>
|
||||
|
||||
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 */
|
|
@ -1,316 +0,0 @@
|
|||
/* GStreamer
|
||||
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
|
||||
* Copyright (C) <2003> David Schleef <ds@schleef.org>
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* <refsect2>
|
||||
* <title>Example launch line</title>
|
||||
* |[
|
||||
* gst-launch-1.0 videotestsrc ! cairotimeoverlay ! autovideosink
|
||||
* ]|
|
||||
* </refsect2>
|
||||
*/
|
||||
|
||||
#ifdef HAVE_CONFIG_H
|
||||
#include "config.h"
|
||||
#endif
|
||||
|
||||
#include <gst/math-compat.h>
|
||||
|
||||
#include <gsttimeoverlay.h>
|
||||
|
||||
#include <string.h>
|
||||
|
||||
#include <cairo.h>
|
||||
|
||||
#include <gst/video/video.h>
|
||||
|
||||
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 <ds@schleef.org>");
|
||||
|
||||
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;
|
||||
}
|
|
@ -1,59 +0,0 @@
|
|||
/* GStreamer
|
||||
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
|
||||
*
|
||||
* 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 <gst/gst.h>
|
||||
#include <gst/base/gstbasetransform.h>
|
||||
#include <cairo.h>
|
||||
|
||||
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__ */
|
Loading…
Reference in a new issue