diff options
Diffstat (limited to 'gst')
| -rw-r--r-- | gst/y4m/Makefile.am | 8 | ||||
| -rw-r--r-- | gst/y4m/gsty4mencode.c | 257 | ||||
| -rw-r--r-- | gst/y4m/gsty4mencode.h | 71 |
3 files changed, 336 insertions, 0 deletions
diff --git a/gst/y4m/Makefile.am b/gst/y4m/Makefile.am new file mode 100644 index 00000000..5b92bf6d --- /dev/null +++ b/gst/y4m/Makefile.am @@ -0,0 +1,8 @@ +plugindir = $(libdir)/gst + +filter_LTLIBRARIES = libgsty4mencode.la + +libgsty4mencode_la_SOURCES = gsty4mencode.c +libgsty4mencode_la_CFLAGS = $(GST_CFLAGS) + +noinst_HEADERS = gsty4mencode.h diff --git a/gst/y4m/gsty4mencode.c b/gst/y4m/gsty4mencode.c new file mode 100644 index 00000000..28a0704e --- /dev/null +++ b/gst/y4m/gsty4mencode.c @@ -0,0 +1,257 @@ +/* Gnome-Streamer + * 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. + */ + +#include <string.h> +#include <gst/gst.h> +#include "gstlavencode.h" + +static GstElementDetails lavencode_details = { + "LavEncode", + "Filter/LAV/Encoder", + "Encodes a YUV frame into the lav format (mjpeg_tools)", + VERSION, + "Wim Taymans <wim.taymans@chello.be>", + "(C) 2001", +}; + + +/* Filter signals and args */ +enum { + /* FILL ME */ + LAST_SIGNAL +}; + +enum { + ARG_0 +}; + +GST_PADTEMPLATE_FACTORY (lavencode_src_factory, + "src", + GST_PAD_SRC, + GST_PAD_ALWAYS, + GST_CAPS_NEW ( + "test_src", + "application/x-lav", + NULL + ) +) + +GST_PADTEMPLATE_FACTORY (lavencode_sink_factory, + "sink", + GST_PAD_SINK, + GST_PAD_ALWAYS, + GST_CAPS_NEW ( + "test_src", + "video/raw", + "format", GST_PROPS_FOURCC (GST_STR_FOURCC ("I420")), + "width", GST_PROPS_INT_RANGE (0, G_MAXINT), + "height", GST_PROPS_INT_RANGE (0, G_MAXINT) + ) +) + +static void gst_lavencode_class_init (GstLavEncodeClass *klass); +static void gst_lavencode_init (GstLavEncode *filter); + +static void gst_lavencode_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec); +static void gst_lavencode_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); + +static void gst_lavencode_chain (GstPad *pad, GstBuffer *buf); +static GstElementStateReturn gst_lavencode_change_state (GstElement *element); + + +static GstElementClass *parent_class = NULL; +//static guint gst_filter_signals[LAST_SIGNAL] = { 0 }; + +GType +gst_lavencode_get_type(void) { + static GType lavencode_type = 0; + + if (!lavencode_type) { + static const GTypeInfo lavencode_info = { + sizeof(GstLavEncodeClass), NULL, + NULL, + (GClassInitFunc)gst_lavencode_class_init, + NULL, + NULL, + sizeof(GstLavEncode), + 0, + (GInstanceInitFunc)gst_lavencode_init, + }; + lavencode_type = g_type_register_static(GST_TYPE_ELEMENT, "GstLavEncode", &lavencode_info, 0); + } + return lavencode_type; +} + +static void +gst_lavencode_class_init (GstLavEncodeClass *klass) +{ + GObjectClass *gobject_class; + GstElementClass *gstelement_class; + + gobject_class = (GObjectClass*)klass; + gstelement_class = (GstElementClass*)klass; + + parent_class = g_type_class_ref(GST_TYPE_ELEMENT); + + gstelement_class->change_state = gst_lavencode_change_state; + + gobject_class->set_property = gst_lavencode_set_property; + gobject_class->get_property = gst_lavencode_get_property; +} + +static void +gst_lavencode_newcaps (GstPad *pad, GstCaps *caps) +{ + GstLavEncode *filter; + + filter = GST_LAVENCODE (gst_pad_get_parent (pad)); + + filter->width = gst_caps_get_int (caps, "width"); + filter->height = gst_caps_get_int (caps, "height"); +} + +static void +gst_lavencode_init (GstLavEncode *filter) +{ + filter->sinkpad = gst_pad_new_from_template( + GST_PADTEMPLATE_GET (lavencode_sink_factory), "sink"); + gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad); + gst_pad_set_chain_function (filter->sinkpad, gst_lavencode_chain); + gst_pad_set_newcaps_function (filter->sinkpad, gst_lavencode_newcaps); + + filter->srcpad = gst_pad_new_from_template( + GST_PADTEMPLATE_GET (lavencode_src_factory), "src"); + gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad); + + filter->init = TRUE; +} + +static void +gst_lavencode_chain (GstPad *pad,GstBuffer *buf) +{ + GstLavEncode *filter; + GstBuffer* outbuf; + gchar *header; + gint len; + + g_return_if_fail(pad != NULL); + g_return_if_fail(GST_IS_PAD(pad)); + g_return_if_fail(buf != NULL); + + filter = GST_LAVENCODE (gst_pad_get_parent (pad)); + g_return_if_fail(filter != NULL); + g_return_if_fail(GST_IS_LAVENCODE(filter)); + + outbuf = gst_buffer_new (); + GST_BUFFER_DATA (outbuf) = g_malloc (GST_BUFFER_SIZE (buf) + 256); + + if (filter->init) { + header = "YUV4MPEG %d %d %d\nFRAME\n"; + filter->init = FALSE; + } + else { + header = "FRAME\n"; + } + + snprintf (GST_BUFFER_DATA (outbuf), 255, header, filter->width, filter->height, 3); + len = strlen (GST_BUFFER_DATA (outbuf)); + + memcpy (GST_BUFFER_DATA (outbuf) + len, GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf)); + GST_BUFFER_SIZE (outbuf) = GST_BUFFER_SIZE (buf) + len; + + gst_buffer_unref(buf); + + gst_pad_push(filter->srcpad,outbuf); +} + +static void +gst_lavencode_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) +{ + GstLavEncode *filter; + + /* it's not null if we got it, but it might not be ours */ + g_return_if_fail(GST_IS_LAVENCODE(object)); + filter = GST_LAVENCODE(object); + + switch (prop_id) { + default: + break; + } +} + +static void +gst_lavencode_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) +{ + GstLavEncode *filter; + + /* it's not null if we got it, but it might not be ours */ + g_return_if_fail(GST_IS_LAVENCODE(object)); + filter = GST_LAVENCODE(object); + + switch (prop_id) { + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static GstElementStateReturn +gst_lavencode_change_state (GstElement *element) +{ + GstLavEncode *filter; + + g_return_val_if_fail (GST_IS_LAVENCODE (element), GST_STATE_FAILURE); + + filter = GST_LAVENCODE(element); + + if (GST_STATE_TRANSITION (element) == GST_STATE_NULL_TO_READY) { + filter->init = TRUE; + } + + if (GST_ELEMENT_CLASS (parent_class)->change_state) + return GST_ELEMENT_CLASS (parent_class)->change_state (element); + + return GST_STATE_SUCCESS; +} + +static gboolean +plugin_init (GModule *module, GstPlugin *plugin) +{ + GstElementFactory *factory; + + factory = gst_elementfactory_new("lavencode",GST_TYPE_LAVENCODE, + &lavencode_details); + g_return_val_if_fail(factory != NULL, FALSE); + + gst_elementfactory_add_padtemplate (factory, + GST_PADTEMPLATE_GET (lavencode_src_factory)); + gst_elementfactory_add_padtemplate (factory, + GST_PADTEMPLATE_GET (lavencode_sink_factory)); + + gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory)); + + return TRUE; +} + +GstPluginDesc plugin_desc = { + GST_VERSION_MAJOR, + GST_VERSION_MINOR, + "lavencode", + plugin_init +}; diff --git a/gst/y4m/gsty4mencode.h b/gst/y4m/gsty4mencode.h new file mode 100644 index 00000000..3471698e --- /dev/null +++ b/gst/y4m/gsty4mencode.h @@ -0,0 +1,71 @@ +/* Gnome-Streamer + * 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_LAVENCODE_H__ +#define __GST_LAVENCODE_H__ + + +#include <config.h> +#include <gst/gst.h> +// #include <gst/meta/audioraw.h> + + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + + +#define GST_TYPE_LAVENCODE \ + (gst_lavencode_get_type()) +#define GST_LAVENCODE(obj) \ + (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_LAVENCODE,GstLavEncode)) +#define GST_LAVENCODE_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ULAW,GstLavEncode)) +#define GST_IS_LAVENCODE(obj) \ + (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_LAVENCODE)) +#define GST_IS_LAVENCODE_CLASS(obj) \ + (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_LAVENCODE)) + +typedef struct _GstLavEncode GstLavEncode; +typedef struct _GstLavEncodeClass GstLavEncodeClass; + +struct _GstLavEncode { + GstElement element; + + GstPad *sinkpad,*srcpad; + + gint width, height; + + gboolean init; + +}; + +struct _GstLavEncodeClass { + GstElementClass parent_class; +}; + +GType gst_lavencode_get_type(void); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + + +#endif /* __GST_STEREO_H__ */ |