mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-25 17:50:36 +00:00
387 lines
12 KiB
C
387 lines
12 KiB
C
/* GStreamer
|
|
* Copyright (C) 2010 Oblong Industries, Inc.
|
|
* Copyright (C) 2010 Collabora Multimedia
|
|
*
|
|
* 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-gstjp2kdecimator
|
|
*
|
|
* The jp2kdecimator element removes information from JPEG2000 images without reencoding.
|
|
*
|
|
* <refsect2>
|
|
* <title>Example launch line</title>
|
|
* |[
|
|
* gst-launch -v videotestsrc num-buffers=1 ! jp2kenc ! \
|
|
* gstjp2kdecimator max-decomposition-levels=2 ! jp2kdec ! \
|
|
* ffmpegcolorspace ! autovideosink
|
|
* ]|
|
|
* This pipelines encodes a test image to JPEG2000, only keeps 3 decomposition levels
|
|
* decodes the decimated image again and shows it on the screen.
|
|
* </refsect2>
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <gst/gst.h>
|
|
|
|
#include "gstjp2kdecimator.h"
|
|
|
|
#include "jp2kcodestream.h"
|
|
|
|
#include <gst/base/gstbytereader.h>
|
|
#include <gst/base/gstbitreader.h>
|
|
#include <gst/base/gstbytewriter.h>
|
|
|
|
#include <string.h>
|
|
|
|
static GstStaticPadTemplate sink_pad_template =
|
|
GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS ("image/x-jpc"));
|
|
|
|
static GstStaticPadTemplate src_pad_template =
|
|
GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS ("image/x-jpc"));
|
|
|
|
enum
|
|
{
|
|
PROP_0,
|
|
PROP_MAX_LAYERS,
|
|
PROP_MAX_DECOMPOSITION_LEVELS
|
|
};
|
|
|
|
#define DEFAULT_MAX_LAYERS (0)
|
|
#define DEFAULT_MAX_DECOMPOSITION_LEVELS (-1)
|
|
|
|
static void gst_jp2k_decimator_finalize (GObject * obj);
|
|
static void gst_jp2k_decimator_set_property (GObject * object,
|
|
guint prop_id, const GValue * value, GParamSpec * pspec);
|
|
static void gst_jp2k_decimator_get_property (GObject * object,
|
|
guint prop_id, GValue * value, GParamSpec * pspec);
|
|
|
|
static GstFlowReturn gst_jp2k_decimator_sink_chain (GstPad * pad,
|
|
GstBuffer * inbuf);
|
|
static gboolean gst_jp2k_decimator_sink_setcaps (GstPad * pad, GstCaps * caps);
|
|
|
|
static gboolean gst_jp2k_decimator_event (GstPad * pad, GstEvent * event);
|
|
static GstCaps *gst_jp2k_decimator_getcaps (GstPad * pad);
|
|
static gboolean gst_jp2k_decimator_query (GstPad * pad, GstQuery * query);
|
|
static const GstQueryType *gst_jp2k_decimator_query_type (GstPad * pad);
|
|
|
|
GST_DEBUG_CATEGORY (gst_jp2k_decimator_debug);
|
|
#define GST_CAT_DEFAULT gst_jp2k_decimator_debug
|
|
|
|
GST_BOILERPLATE (GstJP2kDecimator, gst_jp2k_decimator, GstElement,
|
|
GST_TYPE_ELEMENT);
|
|
|
|
static void
|
|
gst_jp2k_decimator_base_init (gpointer g_class)
|
|
{
|
|
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
|
|
|
|
gst_element_class_set_details_simple (gstelement_class,
|
|
"JPEG2000 decimator",
|
|
"Filter/Image",
|
|
"Removes information from JPEG2000 streams without recompression",
|
|
"Sebastian Dröge <sebastian.droege@collabora.co.uk>");
|
|
|
|
gst_element_class_add_static_pad_template (gstelement_class,
|
|
&sink_pad_template);
|
|
gst_element_class_add_static_pad_template (gstelement_class,
|
|
&src_pad_template);
|
|
}
|
|
|
|
static void
|
|
gst_jp2k_decimator_class_init (GstJP2kDecimatorClass * klass)
|
|
{
|
|
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
|
|
|
gobject_class->set_property = gst_jp2k_decimator_set_property;
|
|
gobject_class->get_property = gst_jp2k_decimator_get_property;
|
|
gobject_class->finalize = gst_jp2k_decimator_finalize;
|
|
|
|
g_object_class_install_property (gobject_class, PROP_MAX_LAYERS,
|
|
g_param_spec_int ("max-layers", "Maximum Number of Layers",
|
|
"Maximum number of layers to keep (0 == all)", 0, 65535,
|
|
DEFAULT_MAX_LAYERS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class, PROP_MAX_DECOMPOSITION_LEVELS,
|
|
g_param_spec_int ("max-decomposition-levels",
|
|
"Maximum Number of Decomposition Levels",
|
|
"Maximum number of decomposition levels to keep (-1 == all)", -1, 32,
|
|
DEFAULT_MAX_DECOMPOSITION_LEVELS,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
}
|
|
|
|
static void
|
|
gst_jp2k_decimator_init (GstJP2kDecimator * self,
|
|
GstJP2kDecimatorClass * g_class)
|
|
{
|
|
self->max_layers = DEFAULT_MAX_LAYERS;
|
|
self->max_decomposition_levels = DEFAULT_MAX_DECOMPOSITION_LEVELS;
|
|
|
|
self->sinkpad = gst_pad_new_from_static_template (&sink_pad_template, "sink");
|
|
gst_pad_set_chain_function (self->sinkpad,
|
|
GST_DEBUG_FUNCPTR (gst_jp2k_decimator_sink_chain));
|
|
gst_pad_set_event_function (self->sinkpad,
|
|
GST_DEBUG_FUNCPTR (gst_jp2k_decimator_event));
|
|
gst_pad_set_setcaps_function (self->sinkpad,
|
|
GST_DEBUG_FUNCPTR (gst_jp2k_decimator_sink_setcaps));
|
|
gst_pad_set_getcaps_function (self->sinkpad,
|
|
GST_DEBUG_FUNCPTR (gst_jp2k_decimator_getcaps));
|
|
gst_pad_set_query_function (self->sinkpad,
|
|
GST_DEBUG_FUNCPTR (gst_jp2k_decimator_query));
|
|
gst_pad_set_query_type_function (self->sinkpad,
|
|
GST_DEBUG_FUNCPTR (gst_jp2k_decimator_query_type));
|
|
gst_element_add_pad (GST_ELEMENT (self), self->sinkpad);
|
|
|
|
self->srcpad = gst_pad_new_from_static_template (&src_pad_template, "src");
|
|
gst_pad_set_event_function (self->srcpad,
|
|
GST_DEBUG_FUNCPTR (gst_jp2k_decimator_event));
|
|
gst_pad_set_getcaps_function (self->srcpad,
|
|
GST_DEBUG_FUNCPTR (gst_jp2k_decimator_getcaps));
|
|
gst_pad_set_query_function (self->srcpad,
|
|
GST_DEBUG_FUNCPTR (gst_jp2k_decimator_query));
|
|
gst_pad_set_query_type_function (self->srcpad,
|
|
GST_DEBUG_FUNCPTR (gst_jp2k_decimator_query_type));
|
|
gst_element_add_pad (GST_ELEMENT (self), self->srcpad);
|
|
}
|
|
|
|
static void
|
|
gst_jp2k_decimator_finalize (GObject * obj)
|
|
{
|
|
G_OBJECT_CLASS (parent_class)->finalize (obj);
|
|
}
|
|
|
|
static void
|
|
gst_jp2k_decimator_set_property (GObject * object,
|
|
guint prop_id, const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstJP2kDecimator *self = GST_JP2K_DECIMATOR (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_MAX_LAYERS:
|
|
self->max_layers = g_value_get_int (value);
|
|
break;
|
|
case PROP_MAX_DECOMPOSITION_LEVELS:
|
|
self->max_decomposition_levels = g_value_get_int (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_jp2k_decimator_get_property (GObject * object,
|
|
guint prop_id, GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstJP2kDecimator *self = GST_JP2K_DECIMATOR (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_MAX_LAYERS:
|
|
g_value_set_int (value, self->max_layers);
|
|
break;
|
|
case PROP_MAX_DECOMPOSITION_LEVELS:
|
|
g_value_set_int (value, self->max_decomposition_levels);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_jp2k_decimator_sink_setcaps (GstPad * pad, GstCaps * caps)
|
|
{
|
|
GstJP2kDecimator *self = GST_JP2K_DECIMATOR (gst_pad_get_parent (pad));
|
|
gboolean ret;
|
|
|
|
GST_DEBUG_OBJECT (pad, "Setting caps: %" GST_PTR_FORMAT, caps);
|
|
|
|
ret = gst_pad_set_caps (self->srcpad, caps);
|
|
|
|
gst_object_unref (self);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static GstCaps *
|
|
gst_jp2k_decimator_getcaps (GstPad * pad)
|
|
{
|
|
GstJP2kDecimator *self = GST_JP2K_DECIMATOR (gst_pad_get_parent (pad));
|
|
GstPad *otherpad;
|
|
GstCaps *tmp, *ret;
|
|
|
|
otherpad = (pad == self->srcpad) ? self->sinkpad : self->srcpad;
|
|
|
|
tmp = gst_pad_peer_get_caps_reffed (otherpad);
|
|
if (tmp) {
|
|
ret = gst_caps_intersect (tmp, gst_pad_get_pad_template_caps (pad));
|
|
gst_caps_unref (tmp);
|
|
} else {
|
|
ret = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
|
|
}
|
|
|
|
gst_object_unref (self);
|
|
|
|
GST_LOG_OBJECT (pad, "Returning caps: %" GST_PTR_FORMAT, ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_jp2k_decimator_query (GstPad * pad, GstQuery * query)
|
|
{
|
|
GstJP2kDecimator *self = GST_JP2K_DECIMATOR (gst_pad_get_parent (pad));
|
|
gboolean ret;
|
|
GstPad *otherpad;
|
|
|
|
otherpad = (pad == self->srcpad) ? self->sinkpad : self->srcpad;
|
|
|
|
GST_LOG_OBJECT (pad, "Handling query of type '%s'",
|
|
gst_query_type_get_name (GST_QUERY_TYPE (query)));
|
|
|
|
ret = gst_pad_peer_query (otherpad, query);
|
|
|
|
gst_object_unref (self);
|
|
return ret;
|
|
}
|
|
|
|
static const GstQueryType *
|
|
gst_jp2k_decimator_query_type (GstPad * pad)
|
|
{
|
|
GstJP2kDecimator *self = GST_JP2K_DECIMATOR (gst_pad_get_parent (pad));
|
|
GstPad *otherpad, *peer;
|
|
const GstQueryType *types = NULL;
|
|
|
|
otherpad = (pad == self->srcpad) ? self->sinkpad : self->srcpad;
|
|
peer = gst_pad_get_peer (otherpad);
|
|
if (peer) {
|
|
types = gst_pad_get_query_types (peer);
|
|
gst_object_unref (peer);
|
|
}
|
|
|
|
gst_object_unref (self);
|
|
|
|
return types;
|
|
}
|
|
|
|
static gboolean
|
|
gst_jp2k_decimator_event (GstPad * pad, GstEvent * event)
|
|
{
|
|
GstJP2kDecimator *self = GST_JP2K_DECIMATOR (gst_pad_get_parent (pad));
|
|
GstPad *otherpad;
|
|
gboolean ret;
|
|
|
|
GST_LOG_OBJECT (pad, "Got %s event", GST_EVENT_TYPE_NAME (event));
|
|
|
|
otherpad = (pad == self->srcpad) ? self->sinkpad : self->srcpad;
|
|
ret = gst_pad_push_event (otherpad, event);
|
|
|
|
gst_object_unref (self);
|
|
return ret;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_jp2k_decimator_decimate_jpc (GstJP2kDecimator * self, GstBuffer * inbuf,
|
|
GstBuffer ** outbuf_)
|
|
{
|
|
GstBuffer *outbuf = NULL;
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
GstByteReader reader = GST_BYTE_READER_INIT_FROM_BUFFER (inbuf);
|
|
GstByteWriter writer;
|
|
MainHeader main_header;
|
|
|
|
gst_byte_writer_init_with_size (&writer, GST_BUFFER_SIZE (inbuf), FALSE);
|
|
|
|
/* main header */
|
|
memset (&main_header, 0, sizeof (MainHeader));
|
|
ret = parse_main_header (self, &reader, &main_header);
|
|
if (ret != GST_FLOW_OK)
|
|
goto done;
|
|
|
|
ret = decimate_main_header (self, &main_header);
|
|
if (ret != GST_FLOW_OK)
|
|
goto done;
|
|
|
|
ret = write_main_header (self, &writer, &main_header);
|
|
if (ret != GST_FLOW_OK)
|
|
goto done;
|
|
|
|
outbuf = gst_byte_writer_reset_and_get_buffer (&writer);
|
|
gst_buffer_copy_metadata (outbuf, inbuf, GST_BUFFER_COPY_ALL);
|
|
|
|
GST_DEBUG_OBJECT (self,
|
|
"Decimated buffer from %u bytes to %u bytes (%.2lf%%)",
|
|
GST_BUFFER_SIZE (inbuf), GST_BUFFER_SIZE (outbuf),
|
|
(100 * GST_BUFFER_SIZE (outbuf)) / ((gdouble) GST_BUFFER_SIZE (inbuf)));
|
|
|
|
done:
|
|
*outbuf_ = outbuf;
|
|
reset_main_header (self, &main_header);
|
|
gst_buffer_unref (inbuf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_jp2k_decimator_sink_chain (GstPad * pad, GstBuffer * inbuf)
|
|
{
|
|
GstJP2kDecimator *self = GST_JP2K_DECIMATOR (GST_PAD_PARENT (pad));
|
|
GstFlowReturn ret;
|
|
GstBuffer *outbuf;
|
|
|
|
GST_LOG_OBJECT (pad,
|
|
"Handling inbuf with timestamp %" GST_TIME_FORMAT " and duration %"
|
|
GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (inbuf)),
|
|
GST_TIME_ARGS (GST_BUFFER_DURATION (inbuf)));
|
|
|
|
if (self->max_layers == 0 && self->max_decomposition_levels == -1) {
|
|
outbuf = inbuf;
|
|
inbuf = NULL;
|
|
ret = GST_FLOW_OK;
|
|
} else {
|
|
ret = gst_jp2k_decimator_decimate_jpc (self, inbuf, &outbuf);
|
|
}
|
|
|
|
if (G_UNLIKELY (ret != GST_FLOW_OK))
|
|
return ret;
|
|
|
|
ret = gst_pad_push (self->srcpad, outbuf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
plugin_init (GstPlugin * plugin)
|
|
{
|
|
GST_DEBUG_CATEGORY_INIT (gst_jp2k_decimator_debug, "jp2kdecimator", 0,
|
|
"JPEG2000 decimator");
|
|
|
|
gst_element_register (plugin, "jp2kdecimator", GST_RANK_NONE,
|
|
gst_jp2k_decimator_get_type ());
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
|
|
GST_VERSION_MINOR,
|
|
"jp2kdecimator",
|
|
"JPEG2000 decimator", plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME,
|
|
GST_PACKAGE_ORIGIN)
|