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configure.ac: add audioresample and cairo plugins. Remove

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Original commit message from CVS:
* configure.ac: add audioresample and cairo plugins.  Remove
HAVE_MMX stuff, because it's not used.
* ext/Makefile.am: same
* ext/audioresample/Makefile.am: You are not ready for an
audio resampling element based on audioresample.
* ext/audioresample/gstaudioresample.c:
* ext/audioresample/gstaudioresample.h:
* ext/cairo/Makefile.am: You are not ready for overlay elements
based on cairo.  Don't look too closely, these elements kinda
suck right now.
* ext/cairo/gstcairo.c: new
* ext/cairo/gsttextoverlay.c: new
* ext/cairo/gsttextoverlay.h: new
* ext/cairo/gsttimeoverlay.c: new
* ext/cairo/gsttimeoverlay.h: new
* gst-libs/gst/media-info/media-info-priv.h: fix compile
problem with compilers that don't support variadic macros.
This commit is contained in:
David Schleef 2004-12-16 05:32:07 +00:00
parent 4c750ac965
commit 0163a876c0
9 changed files with 1173 additions and 15 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

20
ChangeLog
View file

@ -1,3 +1,23 @@
2004-12-15 David Schleef <ds@schleef.org>
* configure.ac: add audioresample and cairo plugins. Remove
HAVE_MMX stuff, because it's not used.
* ext/Makefile.am: same
* ext/audioresample/Makefile.am: You are not ready for an
audio resampling element based on audioresample.
* ext/audioresample/gstaudioresample.c:
* ext/audioresample/gstaudioresample.h:
* ext/cairo/Makefile.am: You are not ready for overlay elements
based on cairo. Don't look too closely, these elements kinda
suck right now.
* ext/cairo/gstcairo.c: new
* ext/cairo/gsttextoverlay.c: new
* ext/cairo/gsttextoverlay.h: new
* ext/cairo/gsttimeoverlay.c: new
* ext/cairo/gsttimeoverlay.h: new
* gst-libs/gst/media-info/media-info-priv.h: fix compile
problem with compilers that don't support variadic macros.
2004-12-15 Balamurali Viswanathan <balamurali.viswanathan@wipro.com> 2004-12-15 Balamurali Viswanathan <balamurali.viswanathan@wipro.com>
Reviewed by: David Schleef <ds@schleef.org> Reviewed by: David Schleef <ds@schleef.org>

33
configure.ac
View file

@ -806,6 +806,22 @@ GST_CHECK_FEATURE(AUDIOFILE, [audiofile], afsink afsrc, [
AC_CHECK_LIB(audiofile, af_virtual_file_new, , HAVE_AUDIOFILE="no") AC_CHECK_LIB(audiofile, af_virtual_file_new, , HAVE_AUDIOFILE="no")
fi]) fi])
dnl *** audioresample ***
translit(dnm, m, l) AM_CONDITIONAL(USE_AUDIORESAMPLE, true)
GST_CHECK_FEATURE(AUDIORESAMPLE, [audioresample plug-in], audioresample, [
PKG_CHECK_MODULES(AUDIORESAMPLE, audioresample-0.1, HAVE_AUDIORESAMPLE=yes, HAVE_AUDIORESAMPLE=no)
AC_SUBST(AUDIORESAMPLE_CFLAGS)
AC_SUBST(AUDIORESAMPLE_LIBS)
])
dnl *** cairo ***
translit(dnm, m, l) AM_CONDITIONAL(USE_CAIRO, true)
GST_CHECK_FEATURE(CAIRO, [cairo plug-in], cairo, [
PKG_CHECK_MODULES(CAIRO, cairo, HAVE_CAIRO=yes, HAVE_CAIRO=no)
AC_SUBST(CAIRO_CFLAGS)
AC_SUBST(CAIRO_LIBS)
])
dnl *** cdaudio *** dnl *** cdaudio ***
translit(dnm, m, l) AM_CONDITIONAL(USE_CDAUDIO, true) translit(dnm, m, l) AM_CONDITIONAL(USE_CDAUDIO, true)
GST_CHECK_FEATURE(CDAUDIO, [cdaudio], cdaudio, [ GST_CHECK_FEATURE(CDAUDIO, [cdaudio], cdaudio, [
@ -1722,15 +1738,6 @@ dnl ######################################################################
dnl # Check command line parameters, and set shell variables accordingly # dnl # Check command line parameters, and set shell variables accordingly #
dnl ###################################################################### dnl ######################################################################
AC_ARG_ENABLE(libmmx,
AC_HELP_STRING([--enable-libmmx],[use libmmx, if available]),
[case "${enableval}" in
yes) USE_LIBMMX=$HAVE_LIBMMX ;;
no) USE_LIBMMX=no ;;
*) AC_MSG_ERROR(bad value ${enableval} for --enable-libmmx) ;;
esac],
[USE_LIBMMX=$HAVE_LIBMMX]) dnl Default value
AC_ARG_ENABLE(atomic, AC_ARG_ENABLE(atomic,
AC_HELP_STRING([--enable-atomic],[use atomic reference counting header]), AC_HELP_STRING([--enable-atomic],[use atomic reference counting header]),
[case "${enableval}" in [case "${enableval}" in
@ -1783,10 +1790,6 @@ dnl # Set defines according to variables set above #
dnl ################################################ dnl ################################################
if test "x$USE_LIBMMX" = xyes; then
AC_DEFINE(HAVE_LIBMMX, 1, [Define if libmmx is available])
fi
if test "x$USE_ATOMIC_H" = xyes; then if test "x$USE_ATOMIC_H" = xyes; then
AC_DEFINE(HAVE_ATOMIC_H, 1, [Define if atomic.h header file is available]) AC_DEFINE(HAVE_ATOMIC_H, 1, [Define if atomic.h header file is available])
fi fi
@ -1804,8 +1807,6 @@ dnl #############################
dnl These should be "USE_*" instead of "HAVE_*", but some packages expect dnl These should be "USE_*" instead of "HAVE_*", but some packages expect
dnl HAVE_ and it is likely to be easier to stick with the old name dnl HAVE_ and it is likely to be easier to stick with the old name
AM_CONDITIONAL(HAVE_LIBMMX, test "x$USE_LIBMMX" = "xyes")
AM_CONDITIONAL(HAVE_ATOMIC_H, test "x$USE_ATOMIC_H" = "xyes") AM_CONDITIONAL(HAVE_ATOMIC_H, test "x$USE_ATOMIC_H" = "xyes")
AM_CONDITIONAL(EXPERIMENTAL, test "$EXPERIMENTAL" = "$xyes") AM_CONDITIONAL(EXPERIMENTAL, test "$EXPERIMENTAL" = "$xyes")
@ -1980,6 +1981,8 @@ ext/alsa/Makefile
ext/arts/Makefile ext/arts/Makefile
ext/artsd/Makefile ext/artsd/Makefile
ext/audiofile/Makefile ext/audiofile/Makefile
ext/audioresample/Makefile
ext/cairo/Makefile
ext/cdaudio/Makefile ext/cdaudio/Makefile
ext/cdparanoia/Makefile ext/cdparanoia/Makefile
ext/dirac/Makefile ext/dirac/Makefile

16
ext/Makefile.am
View file

@ -34,6 +34,18 @@ else
AUDIOFILE_DIR= AUDIOFILE_DIR=
endif endif
if USE_AUDIORESAMPLE
AUDIORESAMPLE_DIR=audioresample
else
AUDIORESAMPLE_DIR=
endif
if USE_CAIRO
CAIRO_DIR=cairo
else
CAIRO_DIR=
endif
if USE_CDAUDIO if USE_CDAUDIO
CDAUDIO_DIR=cdaudio CDAUDIO_DIR=cdaudio
else else
@ -383,6 +395,8 @@ SUBDIRS=\
$(ARTS_DIR) \ $(ARTS_DIR) \
$(ARTSC_DIR) \ $(ARTSC_DIR) \
$(AUDIOFILE_DIR) \ $(AUDIOFILE_DIR) \
$(AUDIORESAMPLE_DIR) \
$(CAIRO_DIR) \
$(CDAUDIO_DIR) \ $(CDAUDIO_DIR) \
$(CDPARANOIA_DIR) \ $(CDPARANOIA_DIR) \
$(DIRAC_DIR) \ $(DIRAC_DIR) \
@ -446,6 +460,8 @@ DIST_SUBDIRS=\
arts \ arts \
artsd \ artsd \
audiofile \ audiofile \
audioresample \
cairo \
cdaudio \ cdaudio \
cdparanoia \ cdparanoia \
dirac \ dirac \

14
ext/cairo/Makefile.am Normal file
View file

@ -0,0 +1,14 @@
plugin_LTLIBRARIES = libgstcairo.la
noinst_HEADERS = gsttimeoverlay.h gsttextoverlay.h
libgstcairo_la_SOURCES = \
gsttimeoverlay.c \
gsttextoverlay.c \
gstcairo.c
libgstcairo_la_CFLAGS = $(GST_CFLAGS) $(CAIRO_CFLAGS) \
-I$(top_srcdir)/gst/videofilter
libgstcairo_la_LIBADD =
libgstcairo_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) $(CAIRO_LIBS) -lm

46
ext/cairo/gstcairo.c Normal file
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@ -0,0 +1,46 @@
/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) <2003,2004> 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
/*#define DEBUG_ENABLED */
#include <gsttimeoverlay.h>
#include <gsttextoverlay.h>
#include <string.h>
#include <math.h>
static gboolean
plugin_init (GstPlugin * plugin)
{
if (!gst_library_load ("gstvideofilter"))
return FALSE;
gst_element_register (plugin, "cairotextoverlay", GST_RANK_NONE,
GST_TYPE_TEXTOVERLAY);
gst_element_register (plugin, "cairotimeoverlay", GST_RANK_NONE,
GST_TYPE_TIMEOVERLAY);
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR, "timeoverlay",
"Time overlay", plugin_init, VERSION, GST_LICENSE, GST_PACKAGE, GST_ORIGIN)

614
ext/cairo/gsttextoverlay.c Normal file
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@ -0,0 +1,614 @@
/* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <gst/gst.h>
#include "gsttextoverlay.h"
static GstElementDetails textoverlay_details = {
"Text Overlay",
"Filter/Editor/Video",
"Adds text strings on top of a video buffer",
"David Schleef <ds@schleef.org>"
};
enum
{
ARG_0,
ARG_TEXT,
ARG_VALIGN,
ARG_HALIGN,
ARG_X0,
ARG_Y0,
ARG_FONT_DESC
};
static GstStaticPadTemplate textoverlay_src_template_factory =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-raw-yuv, "
"format = (fourcc) I420, "
"width = (int) [ 1, MAX ], " "height = (int) [ 1, MAX ]")
);
static GstStaticPadTemplate video_sink_template_factory =
GST_STATIC_PAD_TEMPLATE ("video_sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-raw-yuv, "
"format = (fourcc) I420, "
"width = (int) [ 1, MAX ], " "height = (int) [ 1, MAX ]")
);
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_textoverlay_base_init (gpointer g_class);
static void gst_textoverlay_class_init (GstTextOverlayClass * klass);
static void gst_textoverlay_init (GstTextOverlay * overlay);
static void gst_textoverlay_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_textoverlay_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static GstElementStateReturn gst_textoverlay_change_state (GstElement *
element);
static void gst_textoverlay_finalize (GObject * object);
static GstElementClass *parent_class = NULL;
/*static guint gst_textoverlay_signals[LAST_SIGNAL] = { 0 }; */
GType
gst_textoverlay_get_type (void)
{
static GType textoverlay_type = 0;
if (!textoverlay_type) {
static const GTypeInfo textoverlay_info = {
sizeof (GstTextOverlayClass),
gst_textoverlay_base_init,
NULL,
(GClassInitFunc) gst_textoverlay_class_init,
NULL,
NULL,
sizeof (GstTextOverlay),
0,
(GInstanceInitFunc) gst_textoverlay_init,
};
textoverlay_type =
g_type_register_static (GST_TYPE_ELEMENT, "GstTextOverlay",
&textoverlay_info, 0);
}
return textoverlay_type;
}
static void
gst_textoverlay_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 (&textoverlay_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_details (element_class, &textoverlay_details);
}
static void
gst_textoverlay_class_init (GstTextOverlayClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_peek_parent (klass);
gobject_class->finalize = gst_textoverlay_finalize;
gobject_class->set_property = gst_textoverlay_set_property;
gobject_class->get_property = gst_textoverlay_get_property;
gstelement_class->change_state = gst_textoverlay_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_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_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_object_class_install_property (G_OBJECT_CLASS (klass), ARG_X0,
g_param_spec_int ("x0", "X position",
"Initial X position."
" Horizontal aligment takes this point"
" as reference.", G_MININT, G_MAXINT, 0, G_PARAM_WRITABLE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_Y0,
g_param_spec_int ("y0", "Y position",
"Initial Y position."
" Vertical aligment takes this point"
" as reference.", G_MININT, G_MAXINT, 0, G_PARAM_WRITABLE));
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));
}
#if 0
static void
resize_bitmap (GstTextOverlay * overlay, int width, int height)
{
FT_Bitmap *bitmap = &overlay->bitmap;
int pitch = (width | 3) + 1;
int size = pitch * height;
/* no need to keep reallocating; just keep the maximum size so far */
if (size <= overlay->bitmap_buffer_size) {
bitmap->rows = height;
bitmap->width = width;
bitmap->pitch = pitch;
memset (bitmap->buffer, 0, overlay->bitmap_buffer_size);
return;
}
if (!bitmap->buffer) {
/* initialize */
bitmap->pixel_mode = ft_pixel_mode_grays;
bitmap->num_grays = 256;
}
if (bitmap->buffer)
bitmap->buffer = g_realloc (bitmap->buffer, size);
else
bitmap->buffer = g_malloc (size);
bitmap->rows = height;
bitmap->width = width;
bitmap->pitch = pitch;
memset (bitmap->buffer, 0, size);
overlay->bitmap_buffer_size = size;
}
#endif
static void
gst_textoverlay_render_text (GstTextOverlay * overlay, gchar * text,
int textlen)
{
cairo_text_extents_t extents;
char *string;
string = g_strdup_printf ("%.*s", textlen, text);
if (overlay->pixbuf)
g_free (overlay->pixbuf);
overlay->pixbuf = g_malloc (4 * overlay->width * overlay->text_height);
cairo_set_target_image (overlay->cr, overlay->pixbuf, CAIRO_FORMAT_ARGB32,
overlay->width, overlay->text_height, overlay->width * 4);
cairo_save (overlay->cr);
cairo_rectangle (overlay->cr, 0, 0, overlay->width, overlay->text_height);
cairo_set_alpha (overlay->cr, 0.0);
cairo_set_operator (overlay->cr, CAIRO_OPERATOR_SRC);
cairo_fill (overlay->cr);
cairo_restore (overlay->cr);
cairo_save (overlay->cr);
cairo_text_extents (overlay->cr, string, &extents);
cairo_set_rgb_color (overlay->cr, 1, 1, 1);
cairo_move_to (overlay->cr, 0, overlay->text_height - 2);
cairo_show_text (overlay->cr, string);
cairo_text_path (overlay->cr, string);
cairo_set_rgb_color (overlay->cr, 0, 0, 0);
cairo_set_line_width (overlay->cr, 1.0);
cairo_stroke (overlay->cr);
g_free (string);
cairo_restore (overlay->cr);
overlay->text_width = MIN (extents.width, overlay->width);
}
/* static GstPadLinkReturn */
/* gst_textoverlay_text_sinkconnect (GstPad *pad, GstCaps *caps) */
/* { */
/* return GST_PAD_LINK_DONE; */
/* } */
static GstPadLinkReturn
gst_textoverlay_video_sinkconnect (GstPad * pad, const GstCaps * caps)
{
GstTextOverlay *overlay;
GstStructure *structure;
overlay = GST_TEXTOVERLAY (gst_pad_get_parent (pad));
structure = gst_caps_get_structure (caps, 0);
overlay->width = overlay->height = 0;
gst_structure_get_int (structure, "width", &overlay->width);
gst_structure_get_int (structure, "height", &overlay->height);
return gst_pad_try_set_caps (overlay->srcpad, caps);
}
static void
gst_text_overlay_blit_yuv420 (GstTextOverlay * overlay, guchar * pixbuf,
int x0, int y0)
{
int i;
int j;
int x, a, y;
if (x0 < 0)
x0 = 0;
if (y0 < 0)
y0 = 0;
GST_LOG ("%d %d %d %d %d %d %p", overlay->text_width, overlay->text_height,
overlay->width, overlay->height, x0, y0, pixbuf);
for (i = 0; i < overlay->text_height; i++) {
for (j = 0; j < overlay->text_width; j++) {
#if 0
x = pixbuf[(i + y0) * overlay->width + (j + x0)];
a = overlay->pixbuf[4 * (i * overlay->width + j) + 0];
y = overlay->pixbuf[4 * (i * overlay->width + j) + 1];
pixbuf[(i + y0) * overlay->width + (j + x0)] =
(y * a + x * (255 - a)) / 255;
#endif
x = a = 0;
y = overlay->pixbuf[4 * (i * overlay->width + j) + 1];
pixbuf[(i + y0) * overlay->width + (j + x0)] = y;
}
}
}
static void
gst_textoverlay_video_chain (GstPad * pad, GstData * _data)
{
GstBuffer *buf = GST_BUFFER (_data);
GstTextOverlay *overlay;
guchar *pixbuf;
gint x0, y0;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (buf != NULL);
overlay = GST_TEXTOVERLAY (gst_pad_get_parent (pad));
g_return_if_fail (overlay != NULL);
g_return_if_fail (GST_IS_TEXTOVERLAY (overlay));
if (!GST_IS_BUFFER (_data))
return;
pixbuf = GST_BUFFER_DATA (buf);
x0 = overlay->x0;
y0 = overlay->y0;
switch (overlay->valign) {
case GST_TEXT_OVERLAY_VALIGN_BOTTOM:
y0 -= overlay->text_height;
break;
case GST_TEXT_OVERLAY_VALIGN_BASELINE:
#define BASELINE 2
y0 -= (overlay->text_height - BASELINE);
break;
case GST_TEXT_OVERLAY_VALIGN_TOP:
break;
}
switch (overlay->halign) {
case GST_TEXT_OVERLAY_HALIGN_LEFT:
break;
case GST_TEXT_OVERLAY_HALIGN_RIGHT:
x0 -= overlay->text_width;
break;
case GST_TEXT_OVERLAY_HALIGN_CENTER:
x0 -= overlay->text_width;
break;
}
gst_text_overlay_blit_yuv420 (overlay, pixbuf, x0, y0);
gst_pad_push (overlay->srcpad, GST_DATA (buf));
}
#define PAST_END(buffer, time) \
(GST_BUFFER_TIMESTAMP (buffer) != GST_CLOCK_TIME_NONE && \
GST_BUFFER_DURATION (buffer) != GST_CLOCK_TIME_NONE && \
GST_BUFFER_TIMESTAMP (buffer) + GST_BUFFER_DURATION (buffer) \
< (time))
static void
gst_textoverlay_loop (GstElement * element)
{
GstTextOverlay *overlay;
GstBuffer *video_frame;
guint64 now;
g_return_if_fail (element != NULL);
g_return_if_fail (GST_IS_TEXTOVERLAY (element));
overlay = GST_TEXTOVERLAY (element);
video_frame = GST_BUFFER (gst_pad_pull (overlay->video_sinkpad));
now = GST_BUFFER_TIMESTAMP (video_frame);
/*
* This state machine has a bug that can't be resolved easily.
* (Needs a more complicated state machine.) Basically, if the
* text that came from a buffer from the sink pad is being
* displayed, and the default text is changed by set_parameter,
* we'll incorrectly display the default text.
*
* Otherwise, this is a pretty decent state machine that handles
* buffer timestamps and durations correctly. (I think)
*/
while (overlay->next_buffer == NULL) {
GST_DEBUG ("attempting to pull a buffer");
/* read all text buffers until we get one "in the future" */
if (!GST_PAD_IS_USABLE (overlay->text_sinkpad)) {
break;
}
overlay->next_buffer = GST_BUFFER (gst_pad_pull (overlay->text_sinkpad));
if (!overlay->next_buffer)
break;
if (PAST_END (overlay->next_buffer, now)) {
gst_buffer_unref (overlay->next_buffer);
overlay->next_buffer = NULL;
}
}
if (overlay->next_buffer &&
(GST_BUFFER_TIMESTAMP (overlay->next_buffer) <= now ||
GST_BUFFER_TIMESTAMP (overlay->next_buffer) == GST_CLOCK_TIME_NONE)) {
GST_DEBUG ("using new buffer");
if (overlay->current_buffer) {
gst_buffer_unref (overlay->current_buffer);
}
overlay->current_buffer = overlay->next_buffer;
overlay->next_buffer = NULL;
GST_DEBUG ("rendering '%*s'",
GST_BUFFER_SIZE (overlay->current_buffer),
GST_BUFFER_DATA (overlay->current_buffer));
gst_textoverlay_render_text (overlay,
GST_BUFFER_DATA (overlay->current_buffer),
GST_BUFFER_SIZE (overlay->current_buffer));
overlay->need_render = FALSE;
}
if (overlay->current_buffer && PAST_END (overlay->current_buffer, now)) {
GST_DEBUG ("dropping old buffer");
gst_buffer_unref (overlay->current_buffer);
overlay->current_buffer = NULL;
overlay->need_render = TRUE;
}
if (overlay->need_render) {
GST_DEBUG ("rendering '%s'", overlay->default_text);
gst_textoverlay_render_text (overlay,
overlay->default_text, strlen (overlay->default_text));
overlay->need_render = FALSE;
}
gst_textoverlay_video_chain (overlay->srcpad, GST_DATA (video_frame));
}
static GstElementStateReturn
gst_textoverlay_change_state (GstElement * element)
{
GstTextOverlay *overlay;
overlay = GST_TEXTOVERLAY (element);
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_PAUSED_TO_PLAYING:
break;
case GST_STATE_PLAYING_TO_PAUSED:
break;
case GST_STATE_PAUSED_TO_READY:
break;
}
parent_class->change_state (element);
return GST_STATE_SUCCESS;
}
static void
gst_textoverlay_finalize (GObject * object)
{
GstTextOverlay *overlay = GST_TEXTOVERLAY (object);
if (overlay->cr) {
cairo_destroy (overlay->cr);
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_textoverlay_init (GstTextOverlay * overlay)
{
cairo_font_extents_t font_extents;
/* video sink */
overlay->video_sinkpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&video_sink_template_factory), "video_sink");
gst_pad_set_link_function (overlay->video_sinkpad,
gst_textoverlay_video_sinkconnect);
gst_element_add_pad (GST_ELEMENT (overlay), overlay->video_sinkpad);
/* text sink */
overlay->text_sinkpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&text_sink_template_factory), "text_sink");
gst_element_add_pad (GST_ELEMENT (overlay), overlay->text_sinkpad);
/* (video) source */
overlay->srcpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&textoverlay_src_template_factory), "src");
gst_element_add_pad (GST_ELEMENT (overlay), overlay->srcpad);
overlay->cr = cairo_create ();
overlay->halign = GST_TEXT_OVERLAY_HALIGN_CENTER;
overlay->valign = GST_TEXT_OVERLAY_VALIGN_BASELINE;
overlay->x0 = overlay->y0 = 0;
overlay->default_text = g_strdup ("");
overlay->need_render = TRUE;
cairo_select_font (overlay->cr, "sans", 0, 0);
cairo_scale_font (overlay->cr, 50);
cairo_current_font_extents (overlay->cr, &font_extents);
overlay->text_height = font_extents.height;
gst_element_set_loop_function (GST_ELEMENT (overlay), gst_textoverlay_loop);
}
static void
gst_textoverlay_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstTextOverlay *overlay;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_TEXTOVERLAY (object));
overlay = GST_TEXTOVERLAY (object);
switch (prop_id) {
case ARG_TEXT:
if (overlay->default_text) {
g_free (overlay->default_text);
}
overlay->default_text = g_strdup (g_value_get_string (value));
overlay->need_render = TRUE;
break;
case ARG_VALIGN:
if (strcasecmp (g_value_get_string (value), "baseline") == 0)
overlay->valign = GST_TEXT_OVERLAY_VALIGN_BASELINE;
else if (strcasecmp (g_value_get_string (value), "bottom") == 0)
overlay->valign = GST_TEXT_OVERLAY_VALIGN_BOTTOM;
else if (strcasecmp (g_value_get_string (value), "top") == 0)
overlay->valign = GST_TEXT_OVERLAY_VALIGN_TOP;
else
g_warning ("Invalid 'valign' property value: %s",
g_value_get_string (value));
break;
case ARG_HALIGN:
if (strcasecmp (g_value_get_string (value), "left") == 0)
overlay->halign = GST_TEXT_OVERLAY_HALIGN_LEFT;
else if (strcasecmp (g_value_get_string (value), "right") == 0)
overlay->halign = GST_TEXT_OVERLAY_HALIGN_RIGHT;
else if (strcasecmp (g_value_get_string (value), "center") == 0)
overlay->halign = GST_TEXT_OVERLAY_HALIGN_CENTER;
else
g_warning ("Invalid 'halign' property value: %s",
g_value_get_string (value));
break;
case ARG_X0:
overlay->x0 = g_value_get_int (value);
break;
case ARG_Y0:
overlay->y0 = g_value_get_int (value);
break;
case ARG_FONT_DESC:
{
#if 0
PangoFontDescription *desc;
desc = pango_font_description_from_string (g_value_get_string (value));
if (desc) {
g_message ("font description set: %s", g_value_get_string (value));
pango_layout_set_font_description (overlay->layout, desc);
pango_font_description_free (desc);
render_text (overlay);
} else
g_warning ("font description parse failed: %s",
g_value_get_string (value));
#endif
break;
}
default:
break;
}
}
static void
gst_textoverlay_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstTextOverlay *overlay;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_TEXTOVERLAY (object));
overlay = GST_TEXTOVERLAY (object);
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}

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#ifndef __GST_TEXTOVERLAY_H__
#define __GST_TEXTOVERLAY_H__
#include <gst/gst.h>
#include <cairo.h>
G_BEGIN_DECLS
#define GST_TYPE_TEXTOVERLAY (gst_textoverlay_get_type())
#define GST_TEXTOVERLAY(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),\
GST_TYPE_TEXTOVERLAY, GstTextOverlay))
#define GST_TEXTOVERLAY_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),\
GST_TYPE_ULAW, GstTextOverlay))
#define GST_TEXTOVERLAY_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj),\
GST_TYPE_TEXTOVERLAY, GstTextOverlayClass))
#define GST_IS_TEXTOVERLAY(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),\
GST_TYPE_TEXTOVERLAY))
#define GST_IS_TEXTOVERLAY_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),\
GST_TYPE_TEXTOVERLAY))
typedef struct _GstTextOverlay GstTextOverlay;
typedef struct _GstTextOverlayClass GstTextOverlayClass;
typedef enum _GstTextOverlayVAlign GstTextOverlayVAlign;
typedef enum _GstTextOverlayHAlign GstTextOverlayHAlign;
enum _GstTextOverlayVAlign {
GST_TEXT_OVERLAY_VALIGN_BASELINE,
GST_TEXT_OVERLAY_VALIGN_BOTTOM,
GST_TEXT_OVERLAY_VALIGN_TOP
};
enum _GstTextOverlayHAlign {
GST_TEXT_OVERLAY_HALIGN_LEFT,
GST_TEXT_OVERLAY_HALIGN_CENTER,
GST_TEXT_OVERLAY_HALIGN_RIGHT
};
struct _GstTextOverlay {
GstElement element;
GstPad *video_sinkpad;
GstPad *text_sinkpad;
GstPad *srcpad;
gint width;
gint height;
GstTextOverlayVAlign valign;
GstTextOverlayHAlign halign;
gint x0;
gint y0;
gchar *default_text;
cairo_t *cr;
guchar *pixbuf;
int text_width;
int text_height;
GstBuffer *current_buffer;
GstBuffer *next_buffer;
gboolean need_render;
};
struct _GstTextOverlayClass {
GstElementClass parent_class;
};
GType gst_textoverlay_get_type(void) G_GNUC_CONST;
G_END_DECLS
#endif /* __GST_TEXTOVERLAY_H */

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/* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* This file was (probably) generated from gsttimeoverlay.c,
* gsttimeoverlay.c,v 1.7 2003/11/08 02:48:59 dschleef Exp
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
/*#define DEBUG_ENABLED */
#include <gsttimeoverlay.h>
#include <string.h>
#include <math.h>
#include <cairo.h>
/* GstTimeoverlay signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0
/* FILL ME */
};
static void gst_timeoverlay_base_init (gpointer g_class);
static void gst_timeoverlay_class_init (gpointer g_class, gpointer class_data);
static void gst_timeoverlay_init (GTypeInstance * instance, gpointer g_class);
static void gst_timeoverlay_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_timeoverlay_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_timeoverlay_planar411 (GstVideofilter * videofilter, void *dest,
void *src);
static void gst_timeoverlay_setup (GstVideofilter * videofilter);
GType
gst_timeoverlay_get_type (void)
{
static GType timeoverlay_type = 0;
if (!timeoverlay_type) {
static const GTypeInfo timeoverlay_info = {
sizeof (GstTimeoverlayClass),
gst_timeoverlay_base_init,
NULL,
gst_timeoverlay_class_init,
NULL,
NULL,
sizeof (GstTimeoverlay),
0,
gst_timeoverlay_init,
};
timeoverlay_type = g_type_register_static (GST_TYPE_VIDEOFILTER,
"GstTimeoverlay", &timeoverlay_info, 0);
}
return timeoverlay_type;
}
static GstVideofilterFormat gst_timeoverlay_formats[] = {
{"I420", 12, gst_timeoverlay_planar411,},
};
static void
gst_timeoverlay_base_init (gpointer g_class)
{
static GstElementDetails timeoverlay_details =
GST_ELEMENT_DETAILS ("Time Overlay",
"Filter/Editor/Video",
"Overlays the time on a video stream",
"David Schleef <ds@schleef.org>");
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
GstVideofilterClass *videofilter_class = GST_VIDEOFILTER_CLASS (g_class);
int i;
gst_element_class_set_details (element_class, &timeoverlay_details);
for (i = 0; i < G_N_ELEMENTS (gst_timeoverlay_formats); i++) {
gst_videofilter_class_add_format (videofilter_class,
gst_timeoverlay_formats + i);
}
gst_videofilter_class_add_pad_templates (GST_VIDEOFILTER_CLASS (g_class));
}
static void
gst_timeoverlay_class_init (gpointer g_class, gpointer class_data)
{
GObjectClass *gobject_class;
GstVideofilterClass *videofilter_class;
gobject_class = G_OBJECT_CLASS (g_class);
videofilter_class = GST_VIDEOFILTER_CLASS (g_class);
#if 0
g_object_class_install_property (gobject_class, ARG_METHOD,
g_param_spec_enum ("method", "method", "method",
GST_TYPE_TIMEOVERLAY_METHOD, GST_TIMEOVERLAY_METHOD_1,
G_PARAM_READWRITE));
#endif
gobject_class->set_property = gst_timeoverlay_set_property;
gobject_class->get_property = gst_timeoverlay_get_property;
videofilter_class->setup = gst_timeoverlay_setup;
}
static void
gst_timeoverlay_init (GTypeInstance * instance, gpointer g_class)
{
GstTimeoverlay *timeoverlay = GST_TIMEOVERLAY (instance);
GstVideofilter *videofilter;
GST_DEBUG ("gst_timeoverlay_init");
videofilter = GST_VIDEOFILTER (timeoverlay);
/* do stuff */
}
static void
gst_timeoverlay_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstTimeoverlay *src;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_TIMEOVERLAY (object));
src = GST_TIMEOVERLAY (object);
GST_DEBUG ("gst_timeoverlay_set_property");
switch (prop_id) {
#if 0
case ARG_METHOD:
src->method = g_value_get_enum (value);
break;
#endif
default:
break;
}
}
static void
gst_timeoverlay_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstTimeoverlay *src;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_TIMEOVERLAY (object));
src = GST_TIMEOVERLAY (object);
switch (prop_id) {
#if 0
case ARG_METHOD:
g_value_set_enum (value, src->method);
break;
#endif
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_timeoverlay_setup (GstVideofilter * videofilter)
{
GstTimeoverlay *timeoverlay;
cairo_font_extents_t font_extents;
g_return_if_fail (GST_IS_TIMEOVERLAY (videofilter));
timeoverlay = GST_TIMEOVERLAY (videofilter);
/* if any setup needs to be done, do it here */
timeoverlay->cr = cairo_create ();
cairo_set_rgb_color (timeoverlay->cr, 0, 0, 0);
cairo_select_font (timeoverlay->cr, "monospace", 0, 0);
cairo_scale_font (timeoverlay->cr, 20);
cairo_current_font_extents (timeoverlay->cr, &font_extents);
timeoverlay->text_height = font_extents.height;
}
static char *
gst_timeoverlay_print_smpte_time (guint64 time)
{
int hours;
int minutes;
int seconds;
int ms;
double x;
x = rint ((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 void
gst_timeoverlay_planar411 (GstVideofilter * videofilter, void *dest, void *src)
{
GstTimeoverlay *timeoverlay;
int width;
int height;
int b_width;
char *string;
int i, j;
uint8_t *image;
cairo_text_extents_t extents;
g_return_if_fail (GST_IS_TIMEOVERLAY (videofilter));
timeoverlay = GST_TIMEOVERLAY (videofilter);
width = gst_videofilter_get_input_width (videofilter);
height = gst_videofilter_get_input_height (videofilter);
string =
gst_timeoverlay_print_smpte_time (GST_BUFFER_TIMESTAMP (videofilter->
in_buf));
image = g_malloc (4 * width * timeoverlay->text_height);
cairo_set_target_image (timeoverlay->cr, image, CAIRO_FORMAT_ARGB32,
width, timeoverlay->text_height, width * 4);
cairo_save (timeoverlay->cr);
cairo_rectangle (timeoverlay->cr, 0, 0, width, timeoverlay->text_height);
cairo_set_alpha (timeoverlay->cr, 0);
cairo_set_operator (timeoverlay->cr, CAIRO_OPERATOR_SRC);
cairo_fill (timeoverlay->cr);
cairo_restore (timeoverlay->cr);
cairo_save (timeoverlay->cr);
cairo_text_extents (timeoverlay->cr, string, &extents);
cairo_set_rgb_color (timeoverlay->cr, 1, 1, 1);
cairo_move_to (timeoverlay->cr, 0, timeoverlay->text_height - 2);
cairo_show_text (timeoverlay->cr, string);
g_free (string);
#if 0
cairo_text_path (timeoverlay->cr, string);
cairo_set_rgb_color (timeoverlay->cr, 1, 1, 1);
cairo_set_line_width (timeoverlay->cr, 1.0);
cairo_stroke (timeoverlay->cr);
#endif
cairo_restore (timeoverlay->cr);
b_width = extents.width;
if (b_width > width)
b_width = width;
memcpy (dest, src, videofilter->from_buf_size);
for (i = 0; i < timeoverlay->text_height; i++) {
for (j = 0; j < b_width; j++) {
((uint8_t *) dest)[i * width + j] = image[(i * width + j) * 4 + 0];
}
}
for (i = 0; i < timeoverlay->text_height / 2; i++) {
memset (dest + width * height + i * (width / 2), 128, b_width / 2);
memset (dest + width * height + (width / 2) * (height / 2) +
i * (width / 2), 128, b_width / 2);
}
g_free (image);
}

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/* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_TIMEOVERLAY_H__
#define __GST_TIMEOVERLAY_H__
#include <gst/gst.h>
#include <cairo.h>
#include "gstvideofilter.h"
G_BEGIN_DECLS
#define GST_TYPE_TIMEOVERLAY \
(gst_timeoverlay_get_type())
#define GST_TIMEOVERLAY(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_TIMEOVERLAY,GstTimeoverlay))
#define GST_TIMEOVERLAY_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_TIMEOVERLAY,GstTimeoverlayClass))
#define GST_IS_TIMEOVERLAY(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_TIMEOVERLAY))
#define GST_IS_TIMEOVERLAY_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_TIMEOVERLAY))
typedef struct _GstTimeoverlay GstTimeoverlay;
typedef struct _GstTimeoverlayClass GstTimeoverlayClass;
struct _GstTimeoverlay {
GstVideofilter videofilter;
cairo_t *cr;
int text_height;
};
struct _GstTimeoverlayClass {
GstVideofilterClass parent_class;
};
GType gst_timeoverlay_get_type(void);
G_END_DECLS
#endif /* __GST_TIMEOVERLAY_H__ */