mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-27 12:11:13 +00:00
putting in apoc's png encoder, needs some cleanup
Original commit message from CVS: putting in apoc's png encoder, needs some cleanup
This commit is contained in:
Thomas Vander Stichele
parent
5ed59e18ed
commit
1c4686af94
4 changed files with 452 additions and 0 deletions
11
ext/libpng/Makefile.am
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11
ext/libpng/Makefile.am
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@ -0,0 +1,11 @@
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plugindir = $(libdir)/gst
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plugin_LTLIBRARIES = libgstpng.la
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libgstpng_la_SOURCES = gstpng.c gstpngenc.c
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libgstpng_la_CFLAGS = $(GST_CFLAGS)
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libgstpng_la_LIBADD = $(GST_LIBS) $(LIBPNG_LIBS)
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libgstpng_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
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noinst_HEADERS = gstpng.h
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117
ext/libpng/gstpng.c
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117
ext/libpng/gstpng.c
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@ -0,0 +1,117 @@
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/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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*
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* Filter:
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* Copyright (C) 2000 Donald A. Graft
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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*/
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#include <string.h>
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#include <gst/gst.h>
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#include "gstpng.h"
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struct _elements_entry {
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gchar *name;
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GType (*type) (void);
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GstElementDetails *details;
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gboolean (*factoryinit) (GstElementFactory *factory);
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};
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static struct _elements_entry _elements[] = {
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{ "pngenc", gst_pngenc_get_type, &gst_pngenc_details, NULL },
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{ NULL, 0 },
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};
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GstPadTemplate*
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gst_png_src_factory (void)
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{
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static GstPadTemplate *templ = NULL;
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if (!templ) {
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templ = GST_PAD_TEMPLATE_NEW (
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"src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_CAPS_NEW (
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"png_src",
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"video/raw",
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NULL
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)
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);
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}
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return templ;
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}
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GstPadTemplate*
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gst_png_sink_factory (void)
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{
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static GstPadTemplate *templ = NULL;
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if (!templ) {
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templ = GST_PAD_TEMPLATE_NEW (
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"sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_CAPS_NEW (
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"png_sink",
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"video/raw",
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"format", GST_PROPS_FOURCC (GST_STR_FOURCC ("RGB ")),
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"bpp", GST_PROPS_INT (24),
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"red_mask", GST_PROPS_INT (0xff0000),
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"green_mask", GST_PROPS_INT (0xff00),
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"blue_mask", GST_PROPS_INT (0xff),
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"width", GST_PROPS_INT_RANGE (16, 4096),
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"height", GST_PROPS_INT_RANGE (16, 4096)
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)
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);
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}
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return templ;
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}
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static gboolean
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plugin_init (GModule * module, GstPlugin * plugin)
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{
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GstElementFactory *factory;
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gint i = 0;
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while (_elements[i].name) {
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factory = gst_element_factory_new (_elements[i].name,
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(_elements[i].type) (),
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_elements[i].details);
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if (!factory) {
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g_warning ("gst_png_new failed for `%s'",
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_elements[i].name);
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continue;
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}
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gst_element_factory_add_pad_template (factory, gst_png_src_factory ());
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gst_element_factory_add_pad_template (factory, gst_png_sink_factory ());
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gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
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if (_elements[i].factoryinit) {
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_elements[i].factoryinit (factory);
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}
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i++;
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}
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return TRUE;
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}
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GstPluginDesc plugin_desc = {
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GST_VERSION_MAJOR,
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GST_VERSION_MINOR,
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"png",
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plugin_init
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};
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26
ext/libpng/gstpng.h
Normal file
26
ext/libpng/gstpng.h
Normal file
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@ -0,0 +1,26 @@
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/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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*
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* Filter:
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* Copyright (C) 2000 Donald A. Graft
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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*/
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#include <gst/gst.h>
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#include <png.h>
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GType gst_pngenc_get_type (void);
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extern GstElementDetails gst_pngenc_details;
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extern GstPadTemplate *gst_png_sink_factory ();
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extern GstPadTemplate *gst_png_src_factory ();
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298
ext/libpng/gstpngenc.c
Normal file
298
ext/libpng/gstpngenc.c
Normal file
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@ -0,0 +1,298 @@
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/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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*
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* Filter:
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* Copyright (C) 2000 Donald A. Graft
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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*/
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#include <string.h>
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#include <gst/gst.h>
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#include "gstpng.h"
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#define GST_TYPE_PNGENC \
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(gst_pngenc_get_type())
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#define GST_PNGENC(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PNGENC,GstPngEnc))
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#define GST_PNGENC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ULAW,GstPngEnc))
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#define GST_IS_PNGENC(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PNGENC))
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#define GST_IS_PNGENC_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PNGENC))
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#define MAX_HEIGHT 4096
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typedef struct _GstPngEnc GstPngEnc;
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typedef struct _GstPngEncClass GstPngEncClass;
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gint frame=0;
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struct _GstPngEnc
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{
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GstElement element;
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GstPad *sinkpad, *srcpad;
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GstBuffer *buffer_out;
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png_structp png_struct_ptr;
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png_infop png_info_ptr;
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gint width;
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gint height;
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gint bpp;
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};
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struct _GstPngEncClass
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{
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GstElementClass parent_class;
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};
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GstElementDetails gst_pngenc_details = {
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"",
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"Filter/Video/Effect",
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"LGPL",
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"Apply a pngenc effect on video"
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VERSION,
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"Jeremy SIMON <jsimon13@yahoo.fr>",
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"(C) 2000 Donald Graft",
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};
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/* Filter signals and args */
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enum
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{
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/* FILL ME */
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LAST_SIGNAL
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};
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enum
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{
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ARG_0
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};
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static void gst_pngenc_class_init (GstPngEncClass * klass);
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static void gst_pngenc_init (GstPngEnc * pngenc);
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static void gst_pngenc_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_pngenc_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void gst_pngenc_chain (GstPad * pad, GstBuffer * buf);
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static GstElementClass *parent_class = NULL;
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static void user_error_fn(png_structp png_ptr, png_const_charp error_msg)
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{
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g_warning("%s", error_msg);
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}
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static void user_warning_fn(png_structp png_ptr, png_const_charp warning_msg)
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{
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g_warning("%s", warning_msg);
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}
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GType gst_pngenc_get_type (void)
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{
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static GType pngenc_type = 0;
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if (!pngenc_type) {
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static const GTypeInfo pngenc_info = {
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sizeof (GstPngEncClass), NULL,
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NULL,
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(GClassInitFunc) gst_pngenc_class_init,
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NULL,
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NULL,
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sizeof (GstPngEnc),
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0,
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(GInstanceInitFunc) gst_pngenc_init,
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};
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pngenc_type = g_type_register_static (GST_TYPE_ELEMENT, "GstPngEnc", &pngenc_info, 0);
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}
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return pngenc_type;
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}
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static void
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gst_pngenc_class_init (GstPngEncClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
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gobject_class->set_property = gst_pngenc_set_property;
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gobject_class->get_property = gst_pngenc_get_property;
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}
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|
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static GstPadConnectReturn
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gst_pngenc_sinkconnect (GstPad * pad, GstCaps * caps)
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{
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GstPngEnc *pngenc;
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pngenc = GST_PNGENC (gst_pad_get_parent (pad));
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|
|
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if (!GST_CAPS_IS_FIXED (caps))
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return GST_PAD_CONNECT_DELAYED;
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|
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gst_caps_get_int (caps, "width", &pngenc->width);
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gst_caps_get_int (caps, "height", &pngenc->height);
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gst_caps_get_int (caps, "bpp", &pngenc->bpp);
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return gst_pad_try_set_caps (pngenc->srcpad, caps);
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}
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static void
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gst_pngenc_init (GstPngEnc * pngenc)
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{
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pngenc->sinkpad = gst_pad_new_from_template (gst_png_sink_factory (), "sink");
|
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|
gst_element_add_pad (GST_ELEMENT (pngenc), pngenc->sinkpad);
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|
|
||||||
|
pngenc->srcpad = gst_pad_new_from_template (gst_png_src_factory (), "src");
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gst_element_add_pad (GST_ELEMENT (pngenc), pngenc->srcpad);
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|
|
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gst_pad_set_chain_function (pngenc->sinkpad, gst_pngenc_chain);
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gst_pad_set_connect_function (pngenc->sinkpad, gst_pngenc_sinkconnect);
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|
|
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pngenc->png_struct_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, (png_voidp)NULL, user_error_fn, user_warning_fn);
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if ( pngenc->png_struct_ptr == NULL )
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g_warning( "Failed to initialize png structure");
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|
|
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|
pngenc->png_info_ptr = png_create_info_struct( pngenc->png_struct_ptr );
|
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|
|
||||||
|
if (setjmp( pngenc->png_struct_ptr->jmpbuf))
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png_destroy_write_struct(&pngenc->png_struct_ptr, &pngenc->png_info_ptr);
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|
|
||||||
|
}
|
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|
|
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void user_flush_data(png_structp png_ptr)
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|
{
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GstPngEnc *pngenc;
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|
|
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g_print("FLUSH\n");
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|
|
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pngenc = (GstPngEnc *) png_get_io_ptr(png_ptr);
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|
|
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|
gst_pad_push (pngenc->srcpad, GST_BUFFER (gst_event_new (GST_EVENT_FLUSH)));
|
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|
}
|
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|
|
||||||
|
void user_write_data(png_structp png_ptr, png_bytep data, png_uint_32 length)
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|
{
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GstBuffer *buffer;
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|
GstPngEnc *pngenc;
|
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|
|
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|
pngenc = (GstPngEnc *) png_get_io_ptr(png_ptr);
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|
|
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buffer = gst_buffer_new();
|
||||||
|
GST_BUFFER_DATA (buffer) = g_memdup( data, length );
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|
GST_BUFFER_SIZE (buffer) = length;
|
||||||
|
|
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|
if ( pngenc->buffer_out )
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|
{
|
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|
pngenc->buffer_out = gst_buffer_merge( pngenc->buffer_out, buffer );
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gst_buffer_unref( buffer );
|
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|
}
|
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|
else
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|
pngenc->buffer_out = buffer;
|
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|
}
|
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|
|
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|
static void
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gst_pngenc_chain (GstPad * pad, GstBuffer * buf)
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|
{
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|
GstPngEnc *pngenc;
|
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|
gint row_indice;
|
||||||
|
png_byte *row_pointers[ MAX_HEIGHT ];
|
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|
|
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|
if ( frame != 300 )
|
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|
{
|
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|
frame++;
|
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|
gst_buffer_unref (buf);
|
||||||
|
return ;
|
||||||
|
}
|
||||||
|
|
||||||
|
pngenc = GST_PNGENC (gst_pad_get_parent (pad));
|
||||||
|
|
||||||
|
pngenc->buffer_out = NULL;
|
||||||
|
|
||||||
|
png_set_filter( pngenc->png_struct_ptr, 0, PNG_FILTER_NONE | PNG_FILTER_VALUE_NONE );
|
||||||
|
png_set_compression_level( pngenc->png_struct_ptr, 9);
|
||||||
|
|
||||||
|
png_set_IHDR(
|
||||||
|
pngenc->png_struct_ptr,
|
||||||
|
pngenc->png_info_ptr,
|
||||||
|
pngenc->width,
|
||||||
|
pngenc->height,
|
||||||
|
pngenc->bpp/3,
|
||||||
|
PNG_COLOR_TYPE_RGB,
|
||||||
|
PNG_INTERLACE_NONE,
|
||||||
|
PNG_COMPRESSION_TYPE_DEFAULT,
|
||||||
|
PNG_FILTER_TYPE_DEFAULT
|
||||||
|
);
|
||||||
|
|
||||||
|
png_set_write_fn(pngenc->png_struct_ptr, pngenc, (png_rw_ptr)user_write_data, user_flush_data);
|
||||||
|
|
||||||
|
for ( row_indice = 0; row_indice < pngenc->height; row_indice++ )
|
||||||
|
row_pointers[row_indice] = GST_BUFFER_DATA(buf) + (pngenc->width * row_indice * pngenc->bpp/8 );
|
||||||
|
|
||||||
|
png_write_info( pngenc->png_struct_ptr, pngenc->png_info_ptr );
|
||||||
|
png_write_image( pngenc->png_struct_ptr, row_pointers );
|
||||||
|
png_write_end( pngenc->png_struct_ptr, NULL );
|
||||||
|
png_destroy_info_struct ( pngenc->png_struct_ptr, &pngenc->png_info_ptr );
|
||||||
|
png_destroy_write_struct( &pngenc->png_struct_ptr, (png_infopp)NULL );
|
||||||
|
|
||||||
|
gst_pad_push (pngenc->srcpad, pngenc->buffer_out );
|
||||||
|
|
||||||
|
g_print("Frame %d dumped\n", frame );
|
||||||
|
frame++;
|
||||||
|
|
||||||
|
gst_buffer_unref (buf);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
gst_pngenc_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec)
|
||||||
|
{
|
||||||
|
GstPngEnc *pngenc;
|
||||||
|
|
||||||
|
/* it's not null if we got it, but it might not be ours */
|
||||||
|
g_return_if_fail (GST_IS_PNGENC (object));
|
||||||
|
|
||||||
|
pngenc = GST_PNGENC (object);
|
||||||
|
|
||||||
|
switch (prop_id) {
|
||||||
|
default:
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
gst_pngenc_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec)
|
||||||
|
{
|
||||||
|
GstPngEnc *pngenc;
|
||||||
|
|
||||||
|
/* it's not null if we got it, but it might not be ours */
|
||||||
|
g_return_if_fail (GST_IS_PNGENC (object));
|
||||||
|
|
||||||
|
pngenc = GST_PNGENC (object);
|
||||||
|
|
||||||
|
switch (prop_id) {
|
||||||
|
default:
|
||||||
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
Loading…
Reference in a new issue