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-rw-r--r--ext/jp2k/Makefile.am12
-rw-r--r--ext/jp2k/gstjasperdec.c708
-rw-r--r--ext/jp2k/gstjasperdec.h88
3 files changed, 808 insertions, 0 deletions
diff --git a/ext/jp2k/Makefile.am b/ext/jp2k/Makefile.am
new file mode 100644
index 00000000..ac5cd7cc
--- /dev/null
+++ b/ext/jp2k/Makefile.am
@@ -0,0 +1,12 @@
+plugin_LTLIBRARIES = libgstjp2k.la
+
+libgstjp2k_la_SOURCES = gstjasperdec.c
+libgstjp2k_la_CFLAGS = \
+ $(GST_PLUGINS_BASE_CFLAGS) $(GST_CFLAGS) $(JP2K_CFLAGS)
+libgstjp2k_la_LIBADD = \
+ $(GST_PLUGINS_BASE_LIBS) -lgstvideo-$(GST_MAJORMINOR) \
+ $(GST_LIBS) $(JP2K_LIBS)
+libgstjp2k_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
+
+noinst_HEADERS = \
+ gstjasperdec.h \ No newline at end of file
diff --git a/ext/jp2k/gstjasperdec.c b/ext/jp2k/gstjasperdec.c
new file mode 100644
index 00000000..326a111c
--- /dev/null
+++ b/ext/jp2k/gstjasperdec.c
@@ -0,0 +1,708 @@
+/* GStreamer Jasper based j2k image decoder
+ * 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-jasperdec
+ *
+ * Decodes 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 "gstjasperdec.h"
+
+GST_DEBUG_CATEGORY_STATIC (gst_jasper_dec_debug);
+#define GST_CAT_DEFAULT gst_jasper_dec_debug
+
+static const GstElementDetails plugin_details =
+GST_ELEMENT_DETAILS ("Jasper JPEG2000 image decoder",
+ "Codec/Decoder/Image",
+ "Decodes JPEG2000 encoded images using jasper",
+ "Mark Nauwelaerts <mnauw@users.sf.net>");
+
+enum
+{
+ ARG_0,
+};
+
+static GstStaticPadTemplate gst_jasper_dec_sink_template =
+ GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("image/x-j2c, "
+ "framerate = " GST_VIDEO_FPS_RANGE ", "
+ "fields = (int) 1; " "image/jp2")
+ );
+
+static GstStaticPadTemplate gst_jasper_dec_src_template =
+ GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB "; " GST_VIDEO_CAPS_BGR "; "
+ GST_VIDEO_CAPS_RGBA "; " GST_VIDEO_CAPS_ARGB "; "
+ GST_VIDEO_CAPS_BGRA "; " GST_VIDEO_CAPS_ABGR "; "
+ GST_VIDEO_CAPS_RGBx "; " GST_VIDEO_CAPS_xRGB "; "
+ GST_VIDEO_CAPS_BGRx "; " GST_VIDEO_CAPS_xBGR "; "
+ GST_VIDEO_CAPS_YUV ("{ I420, YV12, YUY2, UYVY, AYUV, Y41B, Y42B }"))
+ );
+
+static void gst_jasper_dec_base_init (gpointer g_class);
+static void gst_jasper_dec_class_init (GstJasperDecClass * klass);
+static void gst_jasper_dec_init (GstJasperDec * filter,
+ GstJasperDecClass * klass);
+
+static void gst_jasper_dec_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_jasper_dec_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+
+static void gst_jasper_dec_reset (GstJasperDec * dec);
+static GstStateChangeReturn gst_jasper_dec_change_state (GstElement * element,
+ GstStateChange transition);
+static gboolean gst_jasper_dec_sink_setcaps (GstPad * pad, GstCaps * caps);
+static GstFlowReturn gst_jasper_dec_chain (GstPad * pad, GstBuffer * buffer);
+
+/* minor trick:
+ * keep original naming but use unique name here for a happy type system
+ */
+
+typedef GstJasperDec GstJp2kDec;
+typedef GstJasperDecClass GstJp2kDecClass;
+
+GST_BOILERPLATE (GstJp2kDec, gst_jasper_dec, GstElement, GST_TYPE_ELEMENT);
+
+static void
+gst_jasper_dec_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_dec_src_template));
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_jasper_dec_sink_template));
+ gst_element_class_set_details (element_class, &plugin_details);
+}
+
+/* initialize the plugin's class */
+static void
+gst_jasper_dec_class_init (GstJasperDecClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+
+ gobject_class = (GObjectClass *) klass;
+ gstelement_class = (GstElementClass *) klass;
+
+ gobject_class->set_property = gst_jasper_dec_set_property;
+ gobject_class->get_property = gst_jasper_dec_get_property;
+
+ gstelement_class->change_state =
+ GST_DEBUG_FUNCPTR (gst_jasper_dec_change_state);
+}
+
+static void
+gst_jasper_dec_init (GstJasperDec * dec, GstJasperDecClass * klass)
+{
+ dec->sinkpad =
+ gst_pad_new_from_static_template (&gst_jasper_dec_sink_template, "sink");
+ gst_pad_set_setcaps_function (dec->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_jasper_dec_sink_setcaps));
+ gst_pad_set_chain_function (dec->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_jasper_dec_chain));
+ gst_element_add_pad (GST_ELEMENT (dec), dec->sinkpad);
+
+ dec->srcpad =
+ gst_pad_new_from_static_template (&gst_jasper_dec_src_template, "src");
+ gst_pad_use_fixed_caps (dec->srcpad);
+ gst_element_add_pad (GST_ELEMENT (dec), dec->srcpad);
+
+ dec->codec_data = NULL;
+ dec->mat = NULL;
+ gst_jasper_dec_reset (dec);
+}
+
+static void
+gst_jasper_dec_reset (GstJasperDec * dec)
+{
+ if (dec->codec_data)
+ gst_buffer_unref (dec->codec_data);
+ dec->codec_data = NULL;
+ if (dec->mat)
+ jas_matrix_destroy (dec->mat);
+ dec->mat = NULL;
+ dec->fmt = -1;
+ dec->clrspc = JAS_CLRSPC_UNKNOWN;
+ dec->format = GST_VIDEO_FORMAT_UNKNOWN;
+}
+
+static gboolean
+gst_jasper_dec_sink_setcaps (GstPad * pad, GstCaps * caps)
+{
+ GstJasperDec *dec;
+ const GValue *framerate;
+ GstStructure *s;
+ const gchar *mimetype;
+ guint32 fourcc;
+
+ dec = GST_JASPER_DEC (GST_PAD_PARENT (pad));
+ s = gst_caps_get_structure (caps, 0);
+ mimetype = gst_structure_get_name (s);
+
+ /* reset negotiation */
+ dec->fmt = -1;
+ dec->strip = 0;
+ dec->format = GST_VIDEO_FORMAT_UNKNOWN;
+ if (dec->codec_data) {
+ gst_buffer_unref (dec->codec_data);
+ dec->codec_data = NULL;
+ }
+
+ if (!strcmp (mimetype, "image/x-j2c")) {
+ const GValue *codec_data;
+ gint fields;
+
+ /* we only handle single field, packetized input */
+ if (gst_structure_get_value (s, "framerate") == NULL)
+ goto refuse_caps;
+ if (gst_structure_get_int (s, "fields", &fields) && fields != 1)
+ goto refuse_caps;
+
+ if (!gst_structure_get_fourcc (s, "fourcc", &fourcc))
+ goto refuse_caps;
+ switch (fourcc) {
+ case GST_MAKE_FOURCC ('s', 'R', 'G', 'B'):
+ dec->clrspc = JAS_CLRSPC_SRGB;
+ break;
+ case GST_MAKE_FOURCC ('s', 'Y', 'U', 'V'):
+ dec->clrspc = JAS_CLRSPC_SYCBCR;
+ break;
+ default:
+ goto refuse_caps;
+ break;
+ }
+
+ dec->fmt = jas_image_strtofmt ("jpc");
+ /* strip the j2c box stuff it is embedded in */
+ dec->strip = 8;
+ codec_data = gst_structure_get_value (s, "codec_data");
+ if (codec_data) {
+ dec->codec_data = gst_value_get_buffer (codec_data);
+ gst_buffer_ref (dec->codec_data);
+ }
+ } else if (!strcmp (mimetype, "image/jp2"))
+ dec->fmt = jas_image_strtofmt ("jp2");
+
+ if (dec->fmt < 0)
+ goto refuse_caps;
+
+ if ((framerate = gst_structure_get_value (s, "framerate")) != NULL) {
+ dec->framerate_numerator = gst_value_get_fraction_numerator (framerate);
+ dec->framerate_denominator = gst_value_get_fraction_denominator (framerate);
+ GST_DEBUG_OBJECT (dec, "got framerate of %d/%d fps => packetized mode",
+ dec->framerate_numerator, dec->framerate_denominator);
+ } else {
+ dec->framerate_numerator = 0;
+ dec->framerate_denominator = 1;
+ GST_DEBUG_OBJECT (dec, "no framerate, assuming single image");
+ }
+
+ return TRUE;
+
+refuse_caps:
+ {
+ GST_WARNING_OBJECT (dec, "refused caps %" GST_PTR_FORMAT, caps);
+ gst_object_unref (dec);
+ return FALSE;
+ }
+}
+
+static gboolean
+gst_jasper_dec_negotiate (GstJasperDec * dec, jas_image_t * image)
+{
+ gint width, height, channels;
+ gint i, j;
+ gboolean negotiate = FALSE, ret = TRUE;
+ jas_clrspc_t clrspc;
+ GstCaps *allowed_caps, *caps;
+
+ width = jas_image_width (image);
+ height = jas_image_height (image);
+ channels = jas_image_numcmpts (image);
+
+ /* jp2c bitstream has no real colour space info (kept in container),
+ * so decoder may only pretend to know, where it really does not */
+ if (!jas_clrspc_isunknown (dec->clrspc)) {
+ clrspc = dec->clrspc;
+ GST_DEBUG_OBJECT (dec, "forcing container supplied colour space %d",
+ clrspc);
+ jas_image_setclrspc (image, clrspc);
+ } else
+ clrspc = jas_image_clrspc (image);
+
+ if (!width || !height || !channels || jas_clrspc_isunknown (clrspc))
+ goto fail_image;
+
+ if (dec->width != width || dec->height != height ||
+ dec->channels != channels || dec->clrspc != clrspc)
+ negotiate = TRUE;
+
+ if (channels != 3)
+ goto not_supported;
+
+ for (i = 0; i < channels; i++) {
+ gint cheight, cwidth, depth, sgnd;
+
+ cheight = jas_image_cmptheight (image, i);
+ cwidth = jas_image_cmptwidth (image, i);
+ depth = jas_image_cmptprec (image, i);
+ sgnd = jas_image_cmptsgnd (image, i);
+
+ GST_LOG_OBJECT (dec, "image component %d, %dx%d, depth %d, sgnd %d", i,
+ cwidth, cheight, depth, sgnd);
+
+ if (depth != 8 || sgnd)
+ goto not_supported;
+
+ if (dec->cheight[i] != cheight || dec->cwidth[i] != cwidth) {
+ dec->cheight[i] = cheight;
+ dec->cwidth[i] = cwidth;
+ negotiate = TRUE;
+ }
+ }
+
+ if (!negotiate && dec->format != GST_VIDEO_FORMAT_UNKNOWN)
+ goto done;
+
+ /* clear and refresh to new state */
+ ret = FALSE;
+ dec->format = GST_VIDEO_FORMAT_UNKNOWN;
+ dec->width = width;
+ dec->height = height;
+ dec->channels = channels;
+
+ /* retrieve allowed caps, and find the first one that reasonably maps
+ * to the parameters of the colourspace */
+ caps = gst_pad_get_allowed_caps (dec->srcpad);
+ if (!caps) {
+ GST_DEBUG_OBJECT (dec, "... but no peer, using template caps");
+ /* need to copy because get_allowed_caps returns a ref,
+ and get_pad_template_caps doesn't */
+ caps = gst_caps_copy (gst_pad_get_pad_template_caps (dec->srcpad));
+ }
+ /* avoid lists of fourcc, etc */
+ allowed_caps = gst_caps_normalize (caps);
+ gst_caps_unref (caps);
+ caps = NULL;
+ GST_LOG_OBJECT (dec, "allowed source caps %" GST_PTR_FORMAT, allowed_caps);
+
+ for (i = 0; i < gst_caps_get_size (allowed_caps); i++) {
+ GstVideoFormat format;
+ gboolean ok;
+
+ if (caps)
+ gst_caps_unref (caps);
+ caps = gst_caps_copy_nth (allowed_caps, i);
+ /* sigh, ds and _parse_caps need fixed caps for parsing, fixate */
+ gst_pad_fixate_caps (dec->srcpad, caps);
+ GST_LOG_OBJECT (dec, "checking caps %" GST_PTR_FORMAT, caps);
+ if (!gst_video_format_parse_caps (caps, &format, NULL, NULL))
+ continue;
+ if (gst_video_format_is_rgb (format) &&
+ jas_clrspc_fam (clrspc) == JAS_CLRSPC_FAM_RGB) {
+ GST_DEBUG_OBJECT (dec, "trying RGB");
+ if ((dec->cmpt[0] = jas_image_getcmptbytype (image,
+ JAS_IMAGE_CT_COLOR (JAS_CLRSPC_CHANIND_RGB_R))) < 0 ||
+ (dec->cmpt[1] = jas_image_getcmptbytype (image,
+ JAS_IMAGE_CT_COLOR (JAS_CLRSPC_CHANIND_RGB_G))) < 0 ||
+ (dec->cmpt[2] = jas_image_getcmptbytype (image,
+ JAS_IMAGE_CT_COLOR (JAS_CLRSPC_CHANIND_RGB_B))) < 0) {
+ GST_DEBUG_OBJECT (dec, "missing RGB color component");
+ continue;
+ }
+ } else if (gst_video_format_is_yuv (format) &&
+ jas_clrspc_fam (clrspc) == JAS_CLRSPC_FAM_YCBCR) {
+ GST_DEBUG_OBJECT (dec, "trying YUV");
+ if ((dec->cmpt[0] = jas_image_getcmptbytype (image,
+ JAS_IMAGE_CT_COLOR (JAS_CLRSPC_CHANIND_YCBCR_Y))) < 0 ||
+ (dec->cmpt[1] = jas_image_getcmptbytype (image,
+ JAS_IMAGE_CT_COLOR (JAS_CLRSPC_CHANIND_YCBCR_CB))) < 0 ||
+ (dec->cmpt[2] = jas_image_getcmptbytype (image,
+ JAS_IMAGE_CT_COLOR (JAS_CLRSPC_CHANIND_YCBCR_CR))) < 0) {
+ GST_DEBUG_OBJECT (dec, "missing YUV color component");
+ continue;
+ }
+ } else
+ continue;
+ /* match format with validity checks */
+ ok = TRUE;
+ for (j = 0; j < channels; j++) {
+ gint cmpt;
+
+ cmpt = dec->cmpt[j];
+ if (dec->cwidth[cmpt] != gst_video_format_get_component_width (format, j,
+ width) ||
+ dec->cheight[cmpt] != gst_video_format_get_component_height (format,
+ j, height))
+ ok = FALSE;
+ }
+ /* commit to this format */
+ if (ok) {
+ dec->format = format;
+ break;
+ }
+ }
+
+ if (caps)
+ gst_caps_unref (caps);
+ gst_caps_unref (allowed_caps);
+
+ if (dec->format != GST_VIDEO_FORMAT_UNKNOWN) {
+ /* cache some video format properties */
+ for (j = 0; j < channels; ++j) {
+ dec->offset[j] = gst_video_format_get_component_offset (dec->format, j,
+ dec->width, dec->height);
+ dec->inc[j] = gst_video_format_get_pixel_stride (dec->format, j);
+ dec->stride[j] = gst_video_format_get_row_stride (dec->format, j,
+ dec->width);
+ }
+ dec->image_size = gst_video_format_get_size (dec->format, width, height);
+ dec->alpha = gst_video_format_has_alpha (dec->format);
+
+ if (dec->mat)
+ jas_matrix_destroy (dec->mat);
+ dec->mat = jas_matrix_create (1, dec->width);
+ if (!dec->mat) {
+ dec->format = GST_VIDEO_FORMAT_UNKNOWN;
+ GST_DEBUG_OBJECT (dec, "failed to create helper buffer");
+ goto fail_image;
+ }
+
+ caps = gst_video_format_new_caps (dec->format, dec->width, dec->height,
+ dec->framerate_numerator, dec->framerate_denominator, 1, 1);
+
+ GST_DEBUG_OBJECT (dec, "Set format to %d, size to %dx%d", dec->format,
+ dec->width, dec->height);
+ ret = gst_pad_set_caps (dec->srcpad, caps);
+ gst_caps_unref (caps);
+ }
+
+done:
+ return ret;
+
+ /* ERRORS */
+fail_image:
+ {
+ GST_DEBUG_OBJECT (dec, "Failed to process decoded image.");
+ ret = FALSE;
+ goto done;
+ }
+not_supported:
+ {
+ GST_DEBUG_OBJECT (dec, "Decoded image has unsupported colour space.");
+ ret = FALSE;
+ goto done;
+ }
+}
+
+static GstFlowReturn
+gst_jasper_dec_get_picture (GstJasperDec * dec, guint8 * data,
+ guint size, GstBuffer ** outbuf)
+{
+ GstFlowReturn ret = GST_FLOW_OK;
+ jas_stream_t *stream = NULL;
+ jas_image_t *image = NULL;
+ gint i;
+
+ g_return_val_if_fail (outbuf != NULL, GST_FLOW_ERROR);
+
+ *outbuf = NULL;
+
+ if (!(stream = jas_stream_memopen ((gpointer) data, size)))
+ goto fail_stream;
+
+ if (!(image = jas_image_decode (stream, dec->fmt, "")))
+ goto fail_decode;
+
+ if (!gst_jasper_dec_negotiate (dec, image))
+ goto fail_negotiate;
+
+ ret = gst_pad_alloc_buffer_and_set_caps (dec->srcpad,
+ GST_BUFFER_OFFSET_NONE,
+ dec->image_size, GST_PAD_CAPS (dec->srcpad), outbuf);
+
+ if (ret != GST_FLOW_OK)
+ goto no_buffer;
+
+ if (dec->alpha)
+ memset (GST_BUFFER_DATA (*outbuf), 0xff, dec->image_size);
+
+ for (i = 0; i < dec->channels; ++i) {
+ gint x, y, cwidth, cheight, inc, stride, cmpt;
+ guint8 *row_pix, *out_pix;
+
+ inc = dec->inc[i];
+ stride = dec->stride[i];
+ cmpt = dec->cmpt[i];
+ cheight = dec->cheight[cmpt];
+ cwidth = dec->cwidth[cmpt];
+
+ GST_DEBUG_OBJECT (dec,
+ "retrieve component %d<=%d, size %dx%d, offset %d, inc %d, stride %d",
+ i, cmpt, cwidth, cheight, dec->offset[i], inc, stride);
+
+ out_pix = GST_BUFFER_DATA (*outbuf) + dec->offset[i];
+
+ for (y = 0; y < cheight; y++) {
+ row_pix = out_pix;
+ if (jas_image_readcmpt (image, i, 0, y, cwidth, 1, dec->mat))
+ goto fail_image;
+ for (x = 0; x < cwidth; x++) {
+ *out_pix = (guint8) jas_matrix_get (dec->mat, 0, x);
+ out_pix += inc;
+ }
+ out_pix = row_pix + stride;
+ }
+ }
+
+ GST_LOG_OBJECT (dec, "all components retrieved");
+
+done:
+ if (image)
+ jas_image_destroy (image);
+ if (stream)
+ jas_stream_close (stream);
+
+ return ret;
+
+ /* ERRORS */
+fail_stream:
+ {
+ GST_DEBUG_OBJECT (dec, "Failed to create inputstream.");
+ goto fail;
+ }
+fail_decode:
+ {
+ GST_DEBUG_OBJECT (dec, "Failed to decode image.");
+ goto fail;
+ }
+fail_image:
+ {
+ GST_DEBUG_OBJECT (dec, "Failed to process decoded image.");
+ goto fail;
+ }
+fail:
+ {
+ if (*outbuf)
+ gst_buffer_unref (*outbuf);
+ *outbuf = NULL;
+ GST_ELEMENT_ERROR (dec, STREAM, DECODE, (NULL), (NULL));
+ ret = GST_FLOW_ERROR;
+ goto done;
+ }
+no_buffer:
+ {
+ GST_DEBUG_OBJECT (dec, "Failed to create outbuffer - %s",
+ gst_flow_get_name (ret));
+ goto done;
+ }
+fail_negotiate:
+ {
+ GST_DEBUG_OBJECT (dec, "Failed to determine output caps.");
+ ret = GST_FLOW_NOT_NEGOTIATED;
+ goto done;
+ }
+}
+
+static GstFlowReturn
+gst_jasper_dec_chain (GstPad * pad, GstBuffer * buf)
+{
+ GstJasperDec *dec;
+ GstFlowReturn ret = GST_FLOW_OK;
+ GstBuffer *outbuf = NULL;
+ guint8 *data;
+ guint size;
+ gboolean discont = FALSE;
+
+ dec = GST_JASPER_DEC (gst_pad_get_parent (pad));
+
+ if (dec->fmt < 0)
+ goto not_negotiated;
+
+ GST_LOG_OBJECT (dec, "buffer with ts: %" GST_TIME_FORMAT,
+ GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));
+
+ discont = GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DISCONT);
+
+ /* strip possible prefix */
+ if (dec->strip) {
+ GstBuffer *tmp;
+
+ tmp = gst_buffer_create_sub (buf, dec->strip,
+ GST_BUFFER_SIZE (buf) - dec->strip);
+ gst_buffer_copy_metadata (tmp, buf, GST_BUFFER_COPY_TIMESTAMPS);
+ gst_buffer_unref (buf);
+ buf = tmp;
+ }
+ /* preprend possible codec_data */
+ if (dec->codec_data) {
+ GstBuffer *tmp;
+
+ tmp = gst_buffer_merge (dec->codec_data, buf);
+ gst_buffer_copy_metadata (tmp, buf, GST_BUFFER_COPY_TIMESTAMPS);
+ gst_buffer_unref (buf);
+ buf = tmp;
+ }
+
+ /* now really feed the data to decoder */
+ data = GST_BUFFER_DATA (buf);
+ size = GST_BUFFER_SIZE (buf);
+
+ ret = gst_jasper_dec_get_picture (dec, data, size, &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 (dec->srcpad, outbuf);
+
+done:
+ gst_buffer_unref (buf);
+ gst_object_unref (dec);
+
+ return ret;
+
+ /* ERRORS */
+not_negotiated:
+ {
+ GST_ELEMENT_ERROR (dec, CORE, NEGOTIATION, (NULL),
+ ("format wasn't negotiated before chain function"));
+ ret = GST_FLOW_NOT_NEGOTIATED;
+ goto done;
+ }
+}
+
+static void
+gst_jasper_dec_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstJasperDec *filter;
+
+ filter = GST_JASPER_DEC (object);
+
+ switch (prop_id) {
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_jasper_dec_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstJasperDec *filter;
+
+ filter = GST_JASPER_DEC (object);
+
+ switch (prop_id) {
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static GstStateChangeReturn
+gst_jasper_dec_change_state (GstElement * element, GstStateChange transition)
+{
+ GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
+ GstJasperDec *dec = GST_JASPER_DEC (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_dec_reset (dec);
+ break;
+ case GST_STATE_CHANGE_READY_TO_NULL:
+ jas_cleanup ();
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+
+ /* ERRORS */
+fail_init:
+ {
+ GST_ELEMENT_ERROR (dec, LIBRARY, INIT, (NULL), (NULL));
+ 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/gstjasperdec.h b/ext/jp2k/gstjasperdec.h
new file mode 100644
index 00000000..962ca772
--- /dev/null
+++ b/ext/jp2k/gstjasperdec.h
@@ -0,0 +1,88 @@
+/* GStreamer Jasper based j2k image decoder
+ * 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_DEC_H__
+#define __GST_JASPER_DEC_H__
+
+#include <gst/gst.h>
+
+G_BEGIN_DECLS
+
+/* #define's don't like whitespacey bits */
+#define GST_TYPE_JASPER_DEC \
+ (gst_jasper_dec_get_type())
+#define GST_JASPER_DEC(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_JASPER_DEC,GstJasperDec))
+#define GST_JASPER_DEC_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_JASPER_DEC,GstJasperDecClass))
+#define GST_IS_JASPER_DEC(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_JASPER_DEC))
+#define GST_IS_JASPER_DEC_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_JASPER_DEC))
+
+typedef struct _GstJasperDec GstJasperDec;
+typedef struct _GstJasperDecClass GstJasperDecClass;
+
+#define GST_JASPER_DEC_MAX_COMPONENT 4
+
+struct _GstJasperDec
+{
+ GstElement element;
+
+ GstPad *sinkpad, *srcpad;
+
+ GstBuffer *codec_data;
+
+ /* jasper image fmt */
+ gint fmt;
+ jas_clrspc_t clrspc;
+ gint strip;
+
+ /* stream/image properties */
+ GstVideoFormat format;
+ gint width;
+ gint height;
+ gint channels;
+ guint image_size;
+ gint stride[GST_JASPER_DEC_MAX_COMPONENT];
+ gint offset[GST_JASPER_DEC_MAX_COMPONENT];
+ gint inc[GST_JASPER_DEC_MAX_COMPONENT];
+ gboolean alpha;
+ jas_matrix_t *mat;
+
+ /* image cmpt indexed */
+ gint cwidth[GST_JASPER_DEC_MAX_COMPONENT];
+ gint cheight[GST_JASPER_DEC_MAX_COMPONENT];
+ /* standard video_format indexed */
+ gint cmpt[GST_JASPER_DEC_MAX_COMPONENT];
+
+ gint framerate_numerator;
+ gint framerate_denominator;
+};
+
+struct _GstJasperDecClass
+{
+ GstElementClass parent_class;
+};
+
+static GType gst_jasper_dec_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_JASPER_DEC_H__ */