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ext/libmng/: Added basic MNG decoder. Needs more work. The encoder does not work yet.

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Original commit message from CVS:
* ext/libmng/Makefile.am:
* ext/libmng/gstmng.c: (plugin_init):
* ext/libmng/gstmng.h:
* ext/libmng/gstmngdec.c: (gst_mngdec_get_type),
(gst_mngdec_base_init), (gst_mngdec_class_init),
(gst_mngdec_sinklink), (gst_mngdec_init), (gst_mngdec_src_getcaps),
(gst_mngdec_loop), (gst_mngdec_get_property),
(gst_mngdec_set_property), (mngdec_error), (mngdec_openstream),
(mngdec_closestream), (mngdec_handle_sink_event),
(mngdec_readdata), (mngdec_gettickcount), (mngdec_settimer),
(mngdec_processheader), (mngdec_getcanvasline), (mngdec_refresh),
(gst_mngdec_change_state):
* ext/libmng/gstmngdec.h:
* ext/libmng/gstmngenc.c: (gst_mngenc_get_type),
(mng_caps_factory), (raw_caps_factory), (gst_mngenc_base_init),
(gst_mngenc_class_init), (gst_mngenc_sinklink), (gst_mngenc_init),
(gst_mngenc_chain), (gst_mngenc_get_property),
(gst_mngenc_set_property):
* ext/libmng/gstmngenc.h:
Added basic MNG decoder. Needs more work. The encoder does
not work yet.
This commit is contained in:
Wim Taymans 2004-10-04 16:37:06 +00:00
parent 4403ebfa3f
commit 15b2ca7e34
8 changed files with 1013 additions and 0 deletions
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24
ChangeLog
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@ -1,3 +1,27 @@
2004-10-04 Wim Taymans <wim@fluendo.com>
* ext/libmng/Makefile.am:
* ext/libmng/gstmng.c: (plugin_init):
* ext/libmng/gstmng.h:
* ext/libmng/gstmngdec.c: (gst_mngdec_get_type),
(gst_mngdec_base_init), (gst_mngdec_class_init),
(gst_mngdec_sinklink), (gst_mngdec_init), (gst_mngdec_src_getcaps),
(gst_mngdec_loop), (gst_mngdec_get_property),
(gst_mngdec_set_property), (mngdec_error), (mngdec_openstream),
(mngdec_closestream), (mngdec_handle_sink_event),
(mngdec_readdata), (mngdec_gettickcount), (mngdec_settimer),
(mngdec_processheader), (mngdec_getcanvasline), (mngdec_refresh),
(gst_mngdec_change_state):
* ext/libmng/gstmngdec.h:
* ext/libmng/gstmngenc.c: (gst_mngenc_get_type),
(mng_caps_factory), (raw_caps_factory), (gst_mngenc_base_init),
(gst_mngenc_class_init), (gst_mngenc_sinklink), (gst_mngenc_init),
(gst_mngenc_chain), (gst_mngenc_get_property),
(gst_mngenc_set_property):
* ext/libmng/gstmngenc.h:
Added basic MNG decoder. Needs more work. The encoder does
not work yet.
2004-10-04 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* gst/realmedia/rmdemux.c: (gst_rmdemux_handle_sink_event),

9
ext/libmng/Makefile.am Normal file
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plugin_LTLIBRARIES = libgstmng.la
libgstmng_la_SOURCES = gstmng.c gstmngdec.c gstmngenc.c
libgstmng_la_CFLAGS = $(GST_CFLAGS)
libgstmng_la_LIBADD = $(GST_LIBS) $(LIBMNG_LIBS)
libgstmng_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
noinst_HEADERS = gstmngdec.h gstmngenc.h

45
ext/libmng/gstmng.c Normal file
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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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 <string.h>
#include <gst/gst.h>
#include "gstmngdec.h"
#include "gstmngenc.h"
static gboolean
plugin_init (GstPlugin * plugin)
{
if (!gst_library_load ("gstbytestream"))
return FALSE;
if (!gst_element_register (plugin, "mngdec", GST_RANK_PRIMARY,
GST_TYPE_MNGDEC))
return FALSE;
if (!gst_element_register (plugin, "mngenc", GST_RANK_NONE, GST_TYPE_MNGENC))
return FALSE;
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"mng",
"MNG plugin library", plugin_init, VERSION, "LGPL", GST_PACKAGE, GST_ORIGIN)

22
ext/libmng/gstmng.h Normal file
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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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 <gst/gst.h>
GType gst_mngenc_get_type (void);
extern GstElementDetails gst_mngenc_details;
extern GstPadTemplate *gst_mng_sink_factory ();
extern GstPadTemplate *gst_mng_src_factory ();

516
ext/libmng/gstmngdec.c Normal file
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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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 <string.h>
#include <gst/gst.h>
#include "gstmngdec.h"
#include <gst/video/video.h>
static GstElementDetails gst_mngdec_details = {
"MNG decoder",
"Codec/Decoder/Image",
"Decode a mng video to raw images",
"Wim Taymans <wim@fluendo.com>",
};
/* Filter signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0
};
static void gst_mngdec_base_init (gpointer g_class);
static void gst_mngdec_class_init (GstMngDecClass * klass);
static void gst_mngdec_init (GstMngDec * mngdec);
static void gst_mngdec_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static void gst_mngdec_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static GstElementStateReturn gst_mngdec_change_state (GstElement * element);
static void gst_mngdec_loop (GstElement * element);
static GstCaps *gst_mngdec_src_getcaps (GstPad * pad);
static GstElementClass *parent_class = NULL;
GType
gst_mngdec_get_type (void)
{
static GType mngdec_type = 0;
if (!mngdec_type) {
static const GTypeInfo mngdec_info = {
sizeof (GstMngDecClass),
gst_mngdec_base_init,
NULL,
(GClassInitFunc) gst_mngdec_class_init,
NULL,
NULL,
sizeof (GstMngDec),
0,
(GInstanceInitFunc) gst_mngdec_init,
};
mngdec_type = g_type_register_static (GST_TYPE_ELEMENT, "GstMngDec",
&mngdec_info, 0);
}
return mngdec_type;
}
static GstStaticPadTemplate gst_mngdec_src_pad_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_RGBA ";" GST_VIDEO_CAPS_RGB)
);
static GstStaticPadTemplate gst_mngdec_sink_pad_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-mng, "
"width = (int) [ 16, 4096 ], "
"height = (int) [ 16, 4096 ], " "framerate = (double) [ 0.0, MAX ]")
);
static void
gst_mngdec_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 (&gst_mngdec_src_pad_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_mngdec_sink_pad_template));
gst_element_class_set_details (element_class, &gst_mngdec_details);
}
static void
gst_mngdec_class_init (GstMngDecClass * 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_mngdec_change_state;
gstelement_class->get_property = gst_mngdec_get_property;
gstelement_class->set_property = gst_mngdec_set_property;
}
static GstPadLinkReturn
gst_mngdec_sinklink (GstPad * pad, const GstCaps * caps)
{
GstMngDec *mngdec;
GstStructure *structure;
mngdec = GST_MNGDEC (gst_pad_get_parent (pad));
structure = gst_caps_get_structure (caps, 0);
gst_structure_get_double (structure, "framerate", &mngdec->fps);
return TRUE;
}
static void
gst_mngdec_init (GstMngDec * mngdec)
{
mngdec->sinkpad = gst_pad_new_from_template (gst_static_pad_template_get
(&gst_mngdec_sink_pad_template), "sink");
gst_element_add_pad (GST_ELEMENT (mngdec), mngdec->sinkpad);
mngdec->srcpad = gst_pad_new_from_template (gst_static_pad_template_get
(&gst_mngdec_src_pad_template), "src");
gst_element_add_pad (GST_ELEMENT (mngdec), mngdec->srcpad);
gst_pad_set_link_function (mngdec->sinkpad, gst_mngdec_sinklink);
gst_pad_set_getcaps_function (mngdec->srcpad, gst_mngdec_src_getcaps);
mngdec->mng = NULL;
mngdec->buffer_out = NULL;
mngdec->color_type = -1;
mngdec->width = -1;
mngdec->height = -1;
mngdec->fps = -1;
gst_element_set_loop_function (GST_ELEMENT (mngdec), gst_mngdec_loop);
}
static GstCaps *
gst_mngdec_src_getcaps (GstPad * pad)
{
GstMngDec *mngdec;
GstCaps *caps;
gint i;
GstPadTemplate *templ;
GstCaps *inter;
mngdec = GST_MNGDEC (gst_pad_get_parent (pad));
templ = gst_static_pad_template_get (&gst_mngdec_src_pad_template);
caps = gst_caps_copy (gst_pad_template_get_caps (templ));
if (mngdec->color_type != -1) {
GstCaps *to_inter = NULL;
switch (mngdec->color_type) {
case MNG_COLORTYPE_RGB:
to_inter = gst_caps_new_simple ("video/x-raw-rgb",
"bpp", G_TYPE_INT, 24, NULL);
break;
case MNG_COLORTYPE_RGBA:
to_inter = gst_caps_new_simple ("video/x-raw-rgb",
"bpp", G_TYPE_INT, 32, NULL);
break;
case MNG_COLORTYPE_GRAY:
case MNG_COLORTYPE_INDEXED:
case MNG_COLORTYPE_GRAYA:
default:
GST_ELEMENT_ERROR (mngdec, STREAM, NOT_IMPLEMENTED, (NULL),
("mngdec does not support grayscale or paletted data yet"));
break;
}
inter = gst_caps_intersect (caps, to_inter);
gst_caps_free (caps);
gst_caps_free (to_inter);
caps = inter;
}
for (i = 0; i < gst_caps_get_size (caps); i++) {
GstStructure *structure = gst_caps_get_structure (caps, i);
if (mngdec->width != -1) {
gst_structure_set (structure, "width", G_TYPE_INT, mngdec->width, NULL);
}
if (mngdec->height != -1) {
gst_structure_set (structure, "height", G_TYPE_INT, mngdec->height, NULL);
}
if (mngdec->fps != -1) {
gst_structure_set (structure,
"framerate", G_TYPE_DOUBLE, mngdec->fps, NULL);
}
}
return caps;
}
static void
gst_mngdec_loop (GstElement * element)
{
GstMngDec *mngdec;
mngdec = GST_MNGDEC (element);
if (mngdec->first) {
GST_DEBUG ("display");
mng_readdisplay (mngdec->mng);
mngdec->first = FALSE;
} else {
GST_DEBUG ("resume");
mng_display_resume (mngdec->mng);
}
}
static void
gst_mngdec_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstMngDec *mngdec;
mngdec = GST_MNGDEC (object);
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_mngdec_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstMngDec *mngdec;
mngdec = GST_MNGDEC (object);
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static mng_bool
mngdec_error (mng_handle mng, mng_int32 code, mng_int8 severity,
mng_chunkid chunktype, mng_uint32 chunkseq,
mng_int32 extra1, mng_int32 extra2, mng_pchar text)
{
GstMngDec *mngdec;
mngdec = GST_MNGDEC (mng_get_userdata (mng));
GST_ERROR_OBJECT (mngdec, "error in chunk %4.4s (%d): %s",
(gchar *) & chunktype, chunkseq, text);
return FALSE;
}
static mng_bool
mngdec_openstream (mng_handle mng)
{
GstMngDec *mngdec;
mngdec = GST_MNGDEC (mng_get_userdata (mng));
mngdec->bs = gst_bytestream_new (mngdec->sinkpad);
return MNG_TRUE;
}
static mng_bool
mngdec_closestream (mng_handle mng)
{
GstMngDec *mngdec;
mngdec = GST_MNGDEC (mng_get_userdata (mng));
gst_bytestream_destroy (mngdec->bs);
return MNG_TRUE;
}
static gboolean
mngdec_handle_sink_event (GstMngDec * mngdec)
{
guint32 remaining;
GstEvent *event;
GstEventType type;
gst_bytestream_get_status (mngdec->bs, &remaining, &event);
type = event ? GST_EVENT_TYPE (event) : GST_EVENT_UNKNOWN;
GST_DEBUG ("mngdec: event %p %d", event, type);
switch (type) {
case GST_EVENT_EOS:
gst_bytestream_flush (mngdec->bs, remaining);
gst_pad_event_default (mngdec->sinkpad, event);
return FALSE;
case GST_EVENT_FLUSH:
break;
case GST_EVENT_DISCONTINUOUS:
GST_DEBUG ("discontinuous event");
break;
default:
g_warning ("unhandled event %d", type);
break;
}
gst_event_unref (event);
return TRUE;
}
static mng_bool
mngdec_readdata (mng_handle mng, mng_ptr buffer,
mng_uint32 size, mng_uint32 * bytesread)
{
GstMngDec *mngdec;
guint8 *bytes;
guint32 read;
mngdec = GST_MNGDEC (mng_get_userdata (mng));
GST_DEBUG ("read data %d", size);
do {
read = gst_bytestream_peek_bytes (mngdec->bs, &bytes, size);
if (read != size) {
if (!mngdec_handle_sink_event (mngdec)) {
/* EOS */
*bytesread = 0;
return MNG_FALSE;
}
} else {
break;
}
} while (TRUE);
memcpy (buffer, bytes, size);
gst_bytestream_flush_fast (mngdec->bs, read);
*bytesread = size;
return MNG_TRUE;
}
static mng_uint32
mngdec_gettickcount (mng_handle mng)
{
GTimeVal time;
guint32 val;
g_get_current_time (&time);
val = time.tv_sec * 1000 + time.tv_usec;
GST_DEBUG ("get tick count %d", val);
return val;
}
static mng_bool
mngdec_settimer (mng_handle mng, mng_uint32 msecs)
{
GstMngDec *mngdec;
mngdec = GST_MNGDEC (mng_get_userdata (mng));
//mymng->delay = msecs;
GST_DEBUG ("set timer %d", msecs);
return MNG_TRUE;
}
static mng_bool
mngdec_processheader (mng_handle mng, mng_uint32 width, mng_uint32 height)
{
GstMngDec *mngdec;
mngdec = GST_MNGDEC (mng_get_userdata (mng));
g_print ("process header %d %d\n", width, height);
GST_DEBUG ("process header %d %d", width, height);
if (mngdec->width != width || mngdec->height != height) {
mngdec->width = width;
mngdec->stride = ((width + 3) & ~3) * 4;
mngdec->height = height;
if (GST_PAD_LINK_FAILED (gst_pad_renegotiate (mngdec->srcpad))) {
GST_ELEMENT_ERROR (mngdec, CORE, NEGOTIATION, (NULL), (NULL));
return MNG_FALSE;
}
mngdec->buffer_out =
gst_buffer_new_and_alloc (mngdec->height * mngdec->stride);
}
return MNG_TRUE;
}
static mng_ptr
mngdec_getcanvasline (mng_handle mng, mng_uint32 line)
{
GstMngDec *mngdec;
mngdec = GST_MNGDEC (mng_get_userdata (mng));
GST_DEBUG ("get canvas line %d", line);
return (mng_ptr) (GST_BUFFER_DATA (mngdec->buffer_out) +
(line * mngdec->stride));
}
static mng_bool
mngdec_refresh (mng_handle mng, mng_uint32 x, mng_uint32 y,
mng_uint32 w, mng_uint32 h)
{
GstMngDec *mngdec;
mngdec = GST_MNGDEC (mng_get_userdata (mng));
GST_DEBUG ("refresh %d %d %d %d", x, y, w, h);
if (h == mngdec->height) {
GstBuffer *out = gst_buffer_copy (mngdec->buffer_out);
gst_pad_push (mngdec->srcpad, GST_DATA (out));
}
return MNG_TRUE;
}
static GstElementStateReturn
gst_mngdec_change_state (GstElement * element)
{
GstMngDec *mngdec = GST_MNGDEC (element);
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_NULL_TO_READY:
/* init library, make sure to pass an alloc function that sets the
* memory to 0 */
mngdec->mng =
mng_initialize (mngdec, (mng_memalloc) g_malloc0,
(mng_memfree) g_free, MNG_NULL);
if (mngdec->mng == MNG_NULL) {
return GST_STATE_FAILURE;
}
/* set the callbacks */
mng_setcb_errorproc (mngdec->mng, mngdec_error);
mng_setcb_openstream (mngdec->mng, mngdec_openstream);
mng_setcb_closestream (mngdec->mng, mngdec_closestream);
mng_setcb_readdata (mngdec->mng, mngdec_readdata);
mng_setcb_gettickcount (mngdec->mng, mngdec_gettickcount);
mng_setcb_settimer (mngdec->mng, mngdec_settimer);
mng_setcb_processheader (mngdec->mng, mngdec_processheader);
mng_setcb_getcanvasline (mngdec->mng, mngdec_getcanvasline);
mng_setcb_refresh (mngdec->mng, mngdec_refresh);
mng_set_canvasstyle (mngdec->mng, MNG_CANVAS_RGBA8);
mng_set_doprogressive (mngdec->mng, MNG_FALSE);
break;
case GST_STATE_READY_TO_PAUSED:
mngdec->first = TRUE;
mngdec->fps = 10.0;
break;
case GST_STATE_PAUSED_TO_PLAYING:
break;
case GST_STATE_PLAYING_TO_PAUSED:
break;
case GST_STATE_PAUSED_TO_READY:
break;
case GST_STATE_READY_TO_NULL:
mng_cleanup (&mngdec->mng);
break;
default:
break;
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}

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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_MNGDEC_H__
#define __GST_MNGDEC_H__
#include <gst/gst.h>
#include <gst/bytestream/bytestream.h>
#include <libmng.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define GST_TYPE_MNGDEC (gst_mngdec_get_type())
#define GST_MNGDEC(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MNGDEC,GstMngDec))
#define GST_MNGDEC_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MNGDEC,GstMngDec))
#define GST_IS_MNGDEC(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MNGDEC))
#define GST_IS_MNGDEC_CLASS(obj)(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MNGDEC))
typedef struct _GstMngDec GstMngDec;
typedef struct _GstMngDecClass GstMngDecClass;
struct _GstMngDec
{
GstElement element;
GstPad *sinkpad, *srcpad;
GstBuffer *buffer_out;
GstByteStream *bs;
mng_handle mng;
gboolean first;
gint width;
gint stride;
gint height;
gint bpp;
gint color_type;
gdouble fps;
};
struct _GstMngDecClass
{
GstElementClass parent_class;
};
GType gst_mngdec_get_type(void);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GST_MNGDEC_H__ */

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* Filter:
* Copyright (C) 2000 Donald A. Graft
*
* 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 <string.h>
#include <gst/gst.h>
#include "gstmngenc.h"
#include <gst/video/video.h>
#define MAX_HEIGHT 4096
GstElementDetails gst_mngenc_details = {
"MNG encoder",
"Codec/Encoder/Image",
"Encode a video frame to an .mng video",
"Wim Taymans <wim@fluendo.com>",
};
/* Filter signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
#define DEFAULT_SNAPSHOT TRUE
enum
{
ARG_0,
ARG_SNAPSHOT,
ARG_NEWMEDIA
};
static void gst_mngenc_base_init (gpointer g_class);
static void gst_mngenc_class_init (GstMngEncClass * klass);
static void gst_mngenc_init (GstMngEnc * mngenc);
static void gst_mngenc_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_mngenc_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static void gst_mngenc_chain (GstPad * pad, GstData * _data);
GstPadTemplate *mngenc_src_template, *mngenc_sink_template;
static GstElementClass *parent_class = NULL;
GType
gst_mngenc_get_type (void)
{
static GType mngenc_type = 0;
if (!mngenc_type) {
static const GTypeInfo mngenc_info = {
sizeof (GstMngEncClass),
gst_mngenc_base_init,
NULL,
(GClassInitFunc) gst_mngenc_class_init,
NULL,
NULL,
sizeof (GstMngEnc),
0,
(GInstanceInitFunc) gst_mngenc_init,
};
mngenc_type = g_type_register_static (GST_TYPE_ELEMENT, "GstMngEnc",
&mngenc_info, 0);
}
return mngenc_type;
}
static GstCaps *
mng_caps_factory (void)
{
return gst_caps_new_simple ("video/x-mng",
"width", GST_TYPE_INT_RANGE, 16, 4096,
"height", GST_TYPE_INT_RANGE, 16, 4096,
"framerate", GST_TYPE_DOUBLE_RANGE, 0.0, G_MAXDOUBLE, NULL);
}
static GstCaps *
raw_caps_factory (void)
{
return gst_caps_from_string (GST_VIDEO_CAPS_RGB);
}
static void
gst_mngenc_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
GstCaps *raw_caps, *mng_caps;
raw_caps = raw_caps_factory ();
mng_caps = mng_caps_factory ();
mngenc_sink_template = gst_pad_template_new ("sink", GST_PAD_SINK,
GST_PAD_ALWAYS, raw_caps);
mngenc_src_template = gst_pad_template_new ("src", GST_PAD_SRC,
GST_PAD_ALWAYS, mng_caps);
gst_element_class_add_pad_template (element_class, mngenc_sink_template);
gst_element_class_add_pad_template (element_class, mngenc_src_template);
gst_element_class_set_details (element_class, &gst_mngenc_details);
}
static void
gst_mngenc_class_init (GstMngEncClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
g_object_class_install_property (gobject_class, ARG_SNAPSHOT,
g_param_spec_boolean ("snapshot", "Snapshot",
"Send EOS after encoding a frame, useful for snapshots",
DEFAULT_SNAPSHOT, (GParamFlags) G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_NEWMEDIA,
g_param_spec_boolean ("newmedia", "newmedia",
"Send new media discontinuity after encoding each frame",
FALSE, (GParamFlags) G_PARAM_READWRITE));
gstelement_class->get_property = gst_mngenc_get_property;
gstelement_class->set_property = gst_mngenc_set_property;
}
static GstPadLinkReturn
gst_mngenc_sinklink (GstPad * pad, const GstCaps * caps)
{
GstMngEnc *mngenc;
gdouble fps;
GstStructure *structure;
mngenc = GST_MNGENC (gst_pad_get_parent (pad));
structure = gst_caps_get_structure (caps, 0);
gst_structure_get_int (structure, "width", &mngenc->width);
gst_structure_get_int (structure, "height", &mngenc->height);
gst_structure_get_double (structure, "framerate", &fps);
gst_structure_get_int (structure, "bpp", &mngenc->bpp);
caps = gst_caps_new_simple ("video/x-mng",
"framerate", G_TYPE_DOUBLE, fps,
"width", G_TYPE_INT, mngenc->width,
"height", G_TYPE_INT, mngenc->height, NULL);
return gst_pad_try_set_caps (mngenc->srcpad, caps);
}
static void
gst_mngenc_init (GstMngEnc * mngenc)
{
mngenc->sinkpad = gst_pad_new_from_template (mngenc_sink_template, "sink");
gst_element_add_pad (GST_ELEMENT (mngenc), mngenc->sinkpad);
mngenc->srcpad = gst_pad_new ("src", GST_PAD_SRC);
gst_element_add_pad (GST_ELEMENT (mngenc), mngenc->srcpad);
gst_pad_set_chain_function (mngenc->sinkpad, gst_mngenc_chain);
gst_pad_set_link_function (mngenc->sinkpad, gst_mngenc_sinklink);
mngenc->snapshot = DEFAULT_SNAPSHOT;
mngenc->newmedia = FALSE;
}
static void
gst_mngenc_chain (GstPad * pad, GstData * _data)
{
GstBuffer *buf = GST_BUFFER (_data);
GstMngEnc *mngenc;
mngenc = GST_MNGENC (gst_pad_get_parent (pad));
/* FIXME, do something here */
gst_buffer_unref (buf);
}
static void
gst_mngenc_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstMngEnc *mngenc;
mngenc = GST_MNGENC (object);
switch (prop_id) {
case ARG_SNAPSHOT:
g_value_set_boolean (value, mngenc->snapshot);
break;
case ARG_NEWMEDIA:
g_value_set_boolean (value, mngenc->newmedia);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_mngenc_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstMngEnc *mngenc;
mngenc = GST_MNGENC (object);
switch (prop_id) {
case ARG_SNAPSHOT:
mngenc->snapshot = g_value_get_boolean (value);
break;
case ARG_NEWMEDIA:
mngenc->newmedia = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}

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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_MNGENC_H__
#define __GST_MNGENC_H__
#include <gst/gst.h>
#include <libmng.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define GST_TYPE_MNGENC (gst_mngenc_get_type())
#define GST_MNGENC(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MNGENC,GstMngEnc))
#define GST_MNGENC_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MNGENC,GstMngEnc))
#define GST_IS_MNGENC(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MNGENC))
#define GST_IS_MNGENC_CLASS(obj)(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MNGENC))
typedef struct _GstMngEnc GstMngEnc;
typedef struct _GstMngEncClass GstMngEncClass;
extern GstPadTemplate *mngenc_src_template, *mngenc_sink_template;
struct _GstMngEnc
{
GstElement element;
GstPad *sinkpad, *srcpad;
GstBuffer *buffer_out;
mng_handle mng;
gint width;
gint height;
gint bpp;
gboolean snapshot;
gboolean newmedia;
};
struct _GstMngEncClass
{
GstElementClass parent_class;
};
GType gst_mngenc_get_type(void);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GST_MNGENC_H__ */