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authorMark Nauwelaerts <mark.nauwelaerts@collabora.co.uk>2008-11-13 21:44:15 +0000
committerMark Nauwelaerts <mark.nauwelaerts@collabora.co.uk>2008-11-13 21:44:15 +0000
commitc8f450341998b95766fb9eb2caf9c08b7d9428c7 (patch)
tree0aafcfc11c6039754d4a29f3fd94aab7e67bb4bb
parentde900d75f4568dc81d9b270a09ad891966f227cd (diff)
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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.
-rw-r--r--ChangeLog16
-rw-r--r--ext/jp2k/Makefile.am5
-rw-r--r--ext/jp2k/gstjasperdec.c31
-rw-r--r--ext/jp2k/gstjasperenc.c536
-rw-r--r--ext/jp2k/gstjasperenc.h84
-rw-r--r--ext/jp2k/gstjp2k.c54
6 files changed, 696 insertions, 30 deletions
diff --git a/ChangeLog b/ChangeLog
index 20149429..aab0a6d0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,21 @@
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),
(gst_jasper_dec_reset), (gst_jasper_dec_negotiate),
(gst_jasper_dec_get_picture):
diff --git a/ext/jp2k/Makefile.am b/ext/jp2k/Makefile.am
index 5e3bfdf8..79aef3ad 100644
--- a/ext/jp2k/Makefile.am
+++ b/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 \ No newline at end of file
+ gstjasperdec.h \
+ gstjasperenc.h \ No newline at end of file
diff --git a/ext/jp2k/gstjasperdec.c b/ext/jp2k/gstjasperdec.c
index 267bb5dc..22d8a4ff 100644
--- a/ext/jp2k/gstjasperdec.c
+++ b/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)
diff --git a/ext/jp2k/gstjasperenc.c b/ext/jp2k/gstjasperenc.c
new file mode 100644
index 00000000..b0bbf22b
--- /dev/null
+++ b/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;
+ }
+}
diff --git a/ext/jp2k/gstjasperenc.h b/ext/jp2k/gstjasperenc.h
new file mode 100644
index 00000000..93090cdd
--- /dev/null
+++ b/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__ */
diff --git a/ext/jp2k/gstjp2k.c b/ext/jp2k/gstjp2k.c
new file mode 100644
index 00000000..af4029ca
--- /dev/null
+++ b/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)