ext/jp2k/: Add jp2kenc to jp2k plugin.

Original commit message from CVS:
* ext/jp2k/Makefile.am:
* ext/jp2k/gstjasperdec.c: (gst_jasper_dec_class_init),
(gst_jasper_dec_change_state):
* ext/jp2k/gstjasperenc.c: (gst_jasper_enc_base_init),
(gst_jasper_enc_class_init), (gst_jasper_enc_init),
(gst_jasper_enc_reset), (gst_jasper_enc_set_src_caps),
(gst_jasper_enc_init_encoder), (gst_jasper_enc_sink_setcaps),
(gst_jasper_enc_get_data), (gst_jasper_enc_chain),
(gst_jasper_enc_set_property), (gst_jasper_enc_get_property),
(gst_jasper_enc_change_state):
* ext/jp2k/gstjasperenc.h:
* ext/jp2k/gstjp2k.c: (plugin_init):
Add jp2kenc to jp2k plugin.

ChangeLog

@@ -1,3 +1,19 @@
+2008-11-13  Mark Nauwelaerts  <mark.nauwelaerts@collabora.co.uk>
+
+	* ext/jp2k/Makefile.am:
+	* ext/jp2k/gstjasperdec.c: (gst_jasper_dec_class_init),
+	(gst_jasper_dec_change_state):
+	* ext/jp2k/gstjasperenc.c: (gst_jasper_enc_base_init),
+	(gst_jasper_enc_class_init), (gst_jasper_enc_init),
+	(gst_jasper_enc_reset), (gst_jasper_enc_set_src_caps),
+	(gst_jasper_enc_init_encoder), (gst_jasper_enc_sink_setcaps),
+	(gst_jasper_enc_get_data), (gst_jasper_enc_chain),
+	(gst_jasper_enc_set_property), (gst_jasper_enc_get_property),
+	(gst_jasper_enc_change_state):
+	* ext/jp2k/gstjasperenc.h:
+	* ext/jp2k/gstjp2k.c: (plugin_init):
+	Add jp2kenc to jp2k plugin.
+
 2008-11-13  Mark Nauwelaerts  <mark.nauwelaerts@collabora.co.uk>
 
 	* ext/jp2k/gstjasperdec.c: (gst_jasper_dec_init),

ext/jp2k/Makefile.am

@@ -1,6 +1,6 @@
 plugin_LTLIBRARIES = libgstjp2k.la
 
-libgstjp2k_la_SOURCES = gstjasperdec.c
+libgstjp2k_la_SOURCES = gstjasperdec.c gstjasperenc.c gstjp2k.c
 libgstjp2k_la_CFLAGS = \
 	$(GST_PLUGINS_BASE_CFLAGS) $(GST_CFLAGS) $(JP2K_CFLAGS)
 libgstjp2k_la_LIBADD = \
@@ -10,4 +10,5 @@ libgstjp2k_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
 libgstjp2k_la_LIBTOOLFLAGS = --tag=disable-static
 
 noinst_HEADERS = \
-	gstjasperdec.h
+	gstjasperdec.h \
+	gstjasperenc.h

ext/jp2k/gstjasperdec.c

@@ -114,6 +114,9 @@ gst_jasper_dec_class_init (GstJasperDecClass * klass)
   gobject_class = (GObjectClass *) klass;
   gstelement_class = (GstElementClass *) klass;
 
+  GST_DEBUG_CATEGORY_INIT (gst_jasper_dec_debug, "jp2kdec", 0,
+      "Jasper JPEG2000 decoder");
+
   gobject_class->set_property = gst_jasper_dec_set_property;
   gobject_class->get_property = gst_jasper_dec_get_property;
 
@@ -676,31 +679,3 @@ fail_init:
     return GST_STATE_CHANGE_FAILURE;
   }
 }
-
-/* entry point to initialize the plug-in
- * initialize the plug-in itself
- * register the element factories and pad templates
- * register the features
- */
-static gboolean
-plugin_init (GstPlugin * plugin)
-{
-  GST_DEBUG_CATEGORY_INIT (gst_jasper_dec_debug, "jp2kdec", 0,
-      "Jasper JPEG2000 decoder");
-
-  if (!gst_element_register (plugin, "jp2kdec", GST_RANK_MARGINAL,
-          GST_TYPE_JASPER_DEC))
-    return FALSE;
-
-  /* plugin initialisation succeeded */
-  return TRUE;
-}
-
-
-/* this is the structure that gst-register looks for
- * so keep the name plugin_desc, or you cannot get your plug-in registered */
-GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
-    GST_VERSION_MINOR,
-    "jp2k",
-    "Jasper-based JPEG2000 image decoder",
-    plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)

ext/jp2k/gstjasperenc.c

@@ -0,0 +1,536 @@
+/* GStreamer Jasper based j2k image encoder
+ * Copyright (C) 2008 Mark Nauwelaerts <mnauw@users.sf.net>
+ *
+ * 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.
+ */
+
+/**
+ * SECTION:element-jasperenc
+ *
+ * Encodes video to jpeg2000 images.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include <gst/gst.h>
+#include <gst/video/video.h>
+#include <string.h>
+
+#include <jasper/jasper.h>
+
+#include "gstjasperenc.h"
+
+GST_DEBUG_CATEGORY_STATIC (gst_jasper_enc_debug);
+#define GST_CAT_DEFAULT gst_jasper_enc_debug
+
+static const GstElementDetails plugin_details =
+GST_ELEMENT_DETAILS ("Jasper JPEG2000 image encoder",
+    "Codec/Decoder/Image",
+    "Encodes video to JPEG2000 using jasper",
+    "Mark Nauwelaerts <mnauw@users.sf.net>");
+
+enum
+{
+  ARG_0,
+};
+
+static GstStaticPadTemplate gst_jasper_enc_sink_template =
+    GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB "; " GST_VIDEO_CAPS_BGR "; "
+        GST_VIDEO_CAPS_RGBx "; " GST_VIDEO_CAPS_xRGB "; "
+        GST_VIDEO_CAPS_BGRx "; " GST_VIDEO_CAPS_xBGR "; "
+        GST_VIDEO_CAPS_YUV ("{ I420, YV12 }"))
+    );
+
+static GstStaticPadTemplate gst_jasper_enc_src_template =
+GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("image/x-j2c, "
+        "framerate = " GST_VIDEO_FPS_RANGE ", " "fields = (int) 1")
+    );
+
+static void gst_jasper_enc_base_init (gpointer g_class);
+static void gst_jasper_enc_class_init (GstJasperEncClass * klass);
+static void gst_jasper_enc_init (GstJasperEnc * filter,
+    GstJasperEncClass * klass);
+
+static void gst_jasper_enc_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec);
+static void gst_jasper_enc_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec);
+
+static void gst_jasper_enc_reset (GstJasperEnc * enc);
+static GstStateChangeReturn gst_jasper_enc_change_state (GstElement * element,
+    GstStateChange transition);
+static gboolean gst_jasper_enc_sink_setcaps (GstPad * pad, GstCaps * caps);
+static GstFlowReturn gst_jasper_enc_chain (GstPad * pad, GstBuffer * buffer);
+
+/* minor trick:
+ * keep original naming but use unique name here for a happy type system
+ */
+
+typedef GstJasperEnc GstJp2kEnc;
+typedef GstJasperEncClass GstJp2kEncClass;
+
+GST_BOILERPLATE (GstJp2kEnc, gst_jasper_enc, GstElement, GST_TYPE_ELEMENT);
+
+static void
+gst_jasper_enc_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_jasper_enc_src_template));
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&gst_jasper_enc_sink_template));
+  gst_element_class_set_details (element_class, &plugin_details);
+}
+
+/* initialize the plugin's class */
+static void
+gst_jasper_enc_class_init (GstJasperEncClass * klass)
+{
+  GObjectClass *gobject_class;
+  GstElementClass *gstelement_class;
+
+  gobject_class = (GObjectClass *) klass;
+  gstelement_class = (GstElementClass *) klass;
+
+  GST_DEBUG_CATEGORY_INIT (gst_jasper_enc_debug, "jp2kenc", 0,
+      "Jasper JPEG2000 encoder");
+
+  gobject_class->set_property = gst_jasper_enc_set_property;
+  gobject_class->get_property = gst_jasper_enc_get_property;
+
+  /* FIXME add some encoder properties */
+
+  gstelement_class->change_state =
+      GST_DEBUG_FUNCPTR (gst_jasper_enc_change_state);
+}
+
+static void
+gst_jasper_enc_init (GstJasperEnc * enc, GstJasperEncClass * klass)
+{
+  enc->sinkpad =
+      gst_pad_new_from_static_template (&gst_jasper_enc_sink_template, "sink");
+  gst_pad_set_setcaps_function (enc->sinkpad,
+      GST_DEBUG_FUNCPTR (gst_jasper_enc_sink_setcaps));
+  gst_pad_set_chain_function (enc->sinkpad,
+      GST_DEBUG_FUNCPTR (gst_jasper_enc_chain));
+  gst_element_add_pad (GST_ELEMENT (enc), enc->sinkpad);
+
+  enc->srcpad =
+      gst_pad_new_from_static_template (&gst_jasper_enc_src_template, "src");
+  gst_pad_use_fixed_caps (enc->srcpad);
+  gst_element_add_pad (GST_ELEMENT (enc), enc->srcpad);
+
+  enc->buf = NULL;
+  gst_jasper_enc_reset (enc);
+}
+
+static void
+gst_jasper_enc_reset (GstJasperEnc * enc)
+{
+  if (enc->buf)
+    g_free (enc->buf);
+  enc->buf = NULL;
+  if (enc->image)
+    jas_image_destroy (enc->image);
+  enc->image = NULL;
+  enc->fmt = -1;
+  enc->clrspc = JAS_CLRSPC_UNKNOWN;
+  enc->format = GST_VIDEO_FORMAT_UNKNOWN;
+}
+
+static gboolean
+gst_jasper_enc_set_src_caps (GstJasperEnc * enc)
+{
+  GstCaps *caps;
+  guint32 fourcc;
+  gboolean ret;
+
+  /* enumerated colourspace */
+  if (gst_video_format_is_rgb (enc->format)) {
+    fourcc = GST_MAKE_FOURCC ('s', 'R', 'G', 'B');
+  } else {
+    fourcc = GST_MAKE_FOURCC ('s', 'Y', 'U', 'V');
+  }
+
+  caps = gst_caps_new_simple ("image/x-j2c", "width", G_TYPE_INT, enc->width,
+      "height", G_TYPE_INT, enc->height, "fourcc", GST_TYPE_FOURCC, fourcc,
+      NULL);
+
+  if (enc->fps_den > 0)
+    gst_caps_set_simple (caps,
+        "framerate", GST_TYPE_FRACTION, enc->fps_num, enc->fps_den, NULL);
+  if (enc->par_den > 0)
+    gst_caps_set_simple (caps,
+        "pixel-aspect-ratio", GST_TYPE_FRACTION, enc->par_num, enc->par_den,
+        NULL);
+
+  ret = gst_pad_set_caps (enc->srcpad, caps);
+  gst_caps_unref (caps);
+
+  return ret;
+}
+
+static gboolean
+gst_jasper_enc_init_encoder (GstJasperEnc * enc)
+{
+  jas_image_cmptparm_t param[GST_JASPER_ENC_MAX_COMPONENT];
+  gint i;
+
+  enc->fmt = jas_image_strtofmt ("jpc");
+
+  if (gst_video_format_is_rgb (enc->format))
+    enc->clrspc = JAS_CLRSPC_SRGB;
+  else
+    enc->clrspc = JAS_CLRSPC_SYCBCR;
+
+  if (enc->buf) {
+    g_free (enc->buf);
+    enc->buf = NULL;
+  }
+  enc->buf = g_new0 (glong, enc->width);
+
+  if (enc->image) {
+    jas_image_destroy (enc->image);
+    enc->image = NULL;
+  }
+
+  for (i = 0; i < enc->channels; ++i) {
+    param[i].tlx = 0;
+    param[i].tly = 0;
+    param[i].prec = 8;
+    param[i].sgnd = 0;
+    param[i].height = enc->cheight[i];
+    param[i].width = enc->cwidth[i];
+    param[i].hstep = enc->height / param[i].height;
+    param[i].vstep = enc->width / param[i].width;
+  }
+
+  if (!(enc->image = jas_image_create (enc->channels, param, enc->clrspc)))
+    return FALSE;
+
+  return TRUE;
+}
+
+static gboolean
+gst_jasper_enc_sink_setcaps (GstPad * pad, GstCaps * caps)
+{
+  GstJasperEnc *enc;
+  GstStructure *s;
+  const gchar *mimetype;
+  GstVideoFormat format;
+  gint width, height;
+  gint fps_num, fps_den;
+  gint par_num, par_den;
+  gint i;
+
+  enc = GST_JASPER_ENC (GST_PAD_PARENT (pad));
+  s = gst_caps_get_structure (caps, 0);
+  mimetype = gst_structure_get_name (s);
+
+  /* get info from caps */
+  if (!gst_video_format_parse_caps (caps, &format, &width, &height))
+    goto refuse_caps;
+  /* optional; pass along if present */
+  fps_num = fps_den = -1;
+  par_num = par_den = -1;
+  gst_video_parse_caps_framerate (caps, &fps_num, &fps_den);
+  gst_video_parse_caps_pixel_aspect_ratio (caps, &par_num, &par_den);
+
+  if (width == enc->width && height == enc->height && enc->format == format
+      && fps_num == enc->fps_num && fps_den == enc->fps_den
+      && par_num == enc->par_num && par_den == enc->par_den)
+    return TRUE;
+
+  /* store input description */
+  enc->format = format;
+  enc->width = width;
+  enc->height = height;
+  enc->fps_num = fps_num;
+  enc->fps_den = fps_den;
+  enc->par_num = par_num;
+  enc->par_den = par_den;
+
+  /* prepare a cached image description  */
+  enc->channels = 3 + (gst_video_format_has_alpha (format) ? 1 : 0);
+  for (i = 0; i < enc->channels; ++i) {
+    enc->cwidth[i] = gst_video_format_get_component_width (format, i, width);
+    enc->cheight[i] = gst_video_format_get_component_height (format, i, height);
+    enc->offset[i] = gst_video_format_get_component_offset (format, i, width,
+        height);
+    enc->stride[i] = gst_video_format_get_row_stride (format, i, width);
+    enc->inc[i] = gst_video_format_get_pixel_stride (format, i);
+  }
+
+  if (!gst_jasper_enc_init_encoder (enc))
+    goto setup_failed;
+
+  return gst_jasper_enc_set_src_caps (enc);
+
+  /* ERRORS */
+setup_failed:
+  {
+    GST_ELEMENT_ERROR (enc, LIBRARY, SETTINGS, (NULL), (NULL));
+    return FALSE;
+  }
+refuse_caps:
+  {
+    GST_WARNING_OBJECT (enc, "refused caps %" GST_PTR_FORMAT, caps);
+    gst_object_unref (enc);
+    return FALSE;
+  }
+}
+
+static GstFlowReturn
+gst_jasper_enc_get_data (GstJasperEnc * enc, guint8 * data, GstBuffer ** outbuf)
+{
+  GstFlowReturn ret = GST_FLOW_OK;
+  jas_stream_t *stream = NULL;
+  gint i;
+  guint size;
+
+  g_return_val_if_fail (outbuf != NULL, GST_FLOW_ERROR);
+
+  *outbuf = NULL;
+
+  if (!(stream = jas_stream_memopen (NULL, 0)))
+    goto fail_stream;
+
+  for (i = 0; i < enc->channels; ++i) {
+    gint x, y, cwidth, cheight, inc, stride, cmpt;
+    guint8 *row_pix, *in_pix;
+    glong *tb;
+
+    cmpt = i;
+    inc = enc->inc[i];
+    stride = enc->stride[i];
+    cheight = enc->cheight[cmpt];
+    cwidth = enc->cwidth[cmpt];
+
+    GST_LOG_OBJECT (enc,
+        "write component %d<=%d, size %dx%d, offset %d, inc %d, stride %d",
+        i, cmpt, cwidth, cheight, enc->offset[i], inc, stride);
+
+    row_pix = data + enc->offset[i];
+
+    for (y = 0; y < cheight; y++) {
+      in_pix = row_pix;
+      tb = enc->buf;
+      for (x = 0; x < cwidth; x++) {
+        *tb = *in_pix;
+        in_pix += inc;
+        tb++;
+      }
+      if (jas_image_writecmpt2 (enc->image, cmpt, 0, y, cwidth, 1, enc->buf))
+        goto fail_image;
+      row_pix += stride;
+    }
+  }
+
+  GST_LOG_OBJECT (enc, "all components written");
+
+  if (jas_image_encode (enc->image, stream, enc->fmt, ""))
+    goto fail_encode;
+
+  GST_LOG_OBJECT (enc, "image encoded");
+
+  size = jas_stream_length (stream);
+  ret = gst_pad_alloc_buffer_and_set_caps (enc->srcpad,
+      GST_BUFFER_OFFSET_NONE, size + 8, GST_PAD_CAPS (enc->srcpad), outbuf);
+
+  if (ret != GST_FLOW_OK)
+    goto no_buffer;
+
+  data = GST_BUFFER_DATA (*outbuf);
+  if (jas_stream_flush (stream) ||
+      jas_stream_rewind (stream) < 0 ||
+      jas_stream_read (stream, data + 8, size) < size)
+    goto fail_image_out;
+
+  /* write atom prefix */
+  GST_WRITE_UINT32_BE (data, size + 8);
+  GST_WRITE_UINT32_LE (data + 4, GST_MAKE_FOURCC ('j', 'p', '2', 'c'));
+
+done:
+  if (stream)
+    jas_stream_close (stream);
+
+  return ret;
+
+  /* ERRORS */
+fail_stream:
+  {
+    GST_DEBUG_OBJECT (enc, "Failed to create inputstream.");
+    goto fail;
+  }
+fail_encode:
+  {
+    GST_DEBUG_OBJECT (enc, "Failed to encode image.");
+    goto fail;
+  }
+fail_image:
+  {
+    GST_DEBUG_OBJECT (enc, "Failed to process input image.");
+    goto fail;
+  }
+fail_image_out:
+  {
+    GST_DEBUG_OBJECT (enc, "Failed to process encoded image.");
+    goto fail;
+  }
+fail:
+  {
+    if (*outbuf)
+      gst_buffer_unref (*outbuf);
+    *outbuf = NULL;
+    GST_ELEMENT_ERROR (enc, STREAM, ENCODE, (NULL), (NULL));
+    ret = GST_FLOW_ERROR;
+    goto done;
+  }
+no_buffer:
+  {
+    GST_DEBUG_OBJECT (enc, "Failed to create outbuffer - %s",
+        gst_flow_get_name (ret));
+    goto done;
+  }
+}
+
+static GstFlowReturn
+gst_jasper_enc_chain (GstPad * pad, GstBuffer * buf)
+{
+  GstJasperEnc *enc;
+  GstFlowReturn ret = GST_FLOW_OK;
+  GstBuffer *outbuf = NULL;
+  guint8 *data;
+  gboolean discont = FALSE;
+
+  enc = GST_JASPER_ENC (gst_pad_get_parent (pad));
+
+  if (enc->fmt < 0)
+    goto not_negotiated;
+
+  GST_LOG_OBJECT (enc, "buffer with ts: %" GST_TIME_FORMAT,
+      GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));
+
+  discont = GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DISCONT);
+
+  /* now really feed the data to encoder */
+  data = GST_BUFFER_DATA (buf);
+  ret = gst_jasper_enc_get_data (enc, data, &outbuf);
+
+  if (outbuf) {
+    gst_buffer_copy_metadata (outbuf, buf, GST_BUFFER_COPY_TIMESTAMPS);
+    if (discont)
+      GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
+  }
+
+  if (ret == GST_FLOW_OK && outbuf)
+    ret = gst_pad_push (enc->srcpad, outbuf);
+
+done:
+  gst_buffer_unref (buf);
+  gst_object_unref (enc);
+
+  return ret;
+
+  /* ERRORS */
+not_negotiated:
+  {
+    GST_ELEMENT_ERROR (enc, CORE, NEGOTIATION, (NULL),
+        ("format wasn't negotiated before chain function"));
+    ret = GST_FLOW_NOT_NEGOTIATED;
+    goto done;
+  }
+}
+
+static void
+gst_jasper_enc_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec)
+{
+  GstJasperEnc *filter;
+
+  filter = GST_JASPER_ENC (object);
+
+  switch (prop_id) {
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_jasper_enc_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec)
+{
+  GstJasperEnc *filter;
+
+  filter = GST_JASPER_ENC (object);
+
+  switch (prop_id) {
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static GstStateChangeReturn
+gst_jasper_enc_change_state (GstElement * element, GstStateChange transition)
+{
+  GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
+  GstJasperEnc *enc = GST_JASPER_ENC (element);
+
+  switch (transition) {
+    case GST_STATE_CHANGE_NULL_TO_READY:
+      if (jas_init ())
+        goto fail_init;
+      break;
+    case GST_STATE_CHANGE_READY_TO_PAUSED:
+      break;
+    default:
+      break;
+  }
+
+  ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+  if (ret == GST_STATE_CHANGE_FAILURE)
+    return ret;
+
+  switch (transition) {
+    case GST_STATE_CHANGE_PAUSED_TO_READY:
+      gst_jasper_enc_reset (enc);
+      break;
+    case GST_STATE_CHANGE_READY_TO_NULL:
+      jas_cleanup ();
+      break;
+    default:
+      break;
+  }
+
+  return ret;
+
+  /* ERRORS */
+fail_init:
+  {
+    GST_ELEMENT_ERROR (enc, LIBRARY, INIT, (NULL), (NULL));
+    return GST_STATE_CHANGE_FAILURE;
+  }
+}

ext/jp2k/gstjasperenc.h

@@ -0,0 +1,84 @@
+/* GStreamer Jasper based j2k image encoder
+ * Copyright (C) 2008 Mark Nauwelaerts <mnauw@users.sf.net>
+ *
+ * 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_JASPER_ENC_H__
+#define __GST_JASPER_ENC_H__
+
+#include <gst/gst.h>
+#include <gst/video/video.h>
+
+#include <jasper/jasper.h>
+
+G_BEGIN_DECLS
+
+/* #define's don't like whitespacey bits */
+#define GST_TYPE_JASPER_ENC			\
+  (gst_jasper_enc_get_type())
+#define GST_JASPER_ENC(obj)						\
+  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_JASPER_ENC,GstJasperEnc))
+#define GST_JASPER_ENC_CLASS(klass)					\
+  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_JASPER_ENC,GstJasperEncClass))
+#define GST_IS_JASPER_ENC(obj)					\
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_JASPER_ENC))
+#define GST_IS_JASPER_ENC_CLASS(klass)				\
+  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_JASPER_ENC))
+
+typedef struct _GstJasperEnc      GstJasperEnc;
+typedef struct _GstJasperEncClass GstJasperEncClass;
+
+#define GST_JASPER_ENC_MAX_COMPONENT  4
+
+struct _GstJasperEnc
+{
+  GstElement element;
+
+  GstPad *sinkpad, *srcpad;
+
+  jas_image_t *image;
+  glong *buf;
+
+  /* jasper image fmt */
+  gint fmt;
+  jas_clrspc_t clrspc;
+
+  /* stream/image properties */
+  GstVideoFormat format;
+  gint width;
+  gint height;
+  gint channels;
+  gint fps_num, fps_den;
+  gint par_num, par_den;
+  /* standard video_format indexed */
+  gint stride[GST_JASPER_ENC_MAX_COMPONENT];
+  gint offset[GST_JASPER_ENC_MAX_COMPONENT];
+  gint inc[GST_JASPER_ENC_MAX_COMPONENT];
+  gint cwidth[GST_JASPER_ENC_MAX_COMPONENT];
+  gint cheight[GST_JASPER_ENC_MAX_COMPONENT];
+};
+
+struct _GstJasperEncClass
+{
+  GstElementClass parent_class;
+};
+
+GType gst_jasper_enc_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_JASPER_ENC_H__ */

ext/jp2k/gstjp2k.c

@@ -0,0 +1,54 @@
+/* GStreamer Jasper based j2k image decoder/encoder
+ * Copyright (C) 2008 Mark Nauwelaerts <mnauw@users.sf.net>
+ *
+ * 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 "gstjasperdec.h"
+#include "gstjasperenc.h"
+
+/* entry point to initialize the plug-in
+ * initialize the plug-in itself
+ * register the element factories and pad templates
+ * register the features
+ */
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+  if (!gst_element_register (plugin, "jp2kdec", GST_RANK_MARGINAL,
+          GST_TYPE_JASPER_DEC))
+    return FALSE;
+
+  if (!gst_element_register (plugin, "jp2kenc", GST_RANK_NONE,
+          GST_TYPE_JASPER_ENC))
+    return FALSE;
+
+  /* plugin initialisation succeeded */
+  return TRUE;
+}
+
+
+/* this is the structure that gst-register looks for
+ * so keep the name plugin_desc, or you cannot get your plug-in registered */
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+    GST_VERSION_MINOR,
+    "jp2k",
+    "Jasper-based JPEG2000 image decoder/encoder",
+    plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)