mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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jpeg2000parse: Add JPEG2000 parser element
https://bugzilla.gnome.org/show_bug.cgi?id=766236
This commit is contained in:
Aaron Boxer
Sebastian Dröge
parent
eebb65e934
commit
fffee978c2
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@ -66,6 +66,7 @@ GObject
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GstMpegvParse
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GstOpusParse
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GstPngParse
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GstJPEG2000Parse
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GstVC1Parse
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GstBaseSink
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GstAudioBaseSink
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@ -156,6 +156,27 @@
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</caps>
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</pads>
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</element>
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<element>
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<name>jpeg2000parse</name>
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<longname>JPEG 2000 parser</longname>
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<class>Codec/Parser/Video/Image</class>
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<description>Parses JPEG 2000 files</description>
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<author>Aaron Boxer <boxerab@gmail.com></author>
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<pads>
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<caps>
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<name>sink</name>
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<direction>sink</direction>
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<presence>always</presence>
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<details>image/x-jpc</details>
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</caps>
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<caps>
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<name>src</name>
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<direction>source</direction>
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<presence>always</presence>
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<details>image/x-jpc, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], parsed=(boolean)true</details>
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</caps>
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</pads>
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</element>
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<element>
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<name>vc1parse</name>
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<longname>VC1 parser</longname>
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@ -5,6 +5,7 @@ libgstvideoparsersbad_la_SOURCES = plugin.c \
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gstdiracparse.c dirac_parse.c \
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gsth264parse.c gstmpegvideoparse.c \
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gstmpeg4videoparse.c \
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gstjpeg2000parse.c \
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gstpngparse.c \
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gstvc1parse.c \
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gsth265parse.c
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@ -29,6 +30,7 @@ noinst_HEADERS = gsth263parse.h h263parse.h \
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gstdiracparse.h dirac_parse.h \
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gsth264parse.h gstmpegvideoparse.h \
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gstmpeg4videoparse.h \
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gstjpeg2000parse.h \
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gstjpeg2000sampling.h \
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gstpngparse.h \
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gstvc1parse.h \
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402
gst/videoparsers/gstjpeg2000parse.c
Normal file
402
gst/videoparsers/gstjpeg2000parse.c
Normal file
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@ -0,0 +1,402 @@
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/* GStreamer JPEG 2000 Parser
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* Copyright (C) <2016> Grok Image Compession Inc.
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* @author Aaron Boxer <boxerab@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include "gstjpeg2000parse.h"
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#include <gst/base/base.h>
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/* SOC marker plus minimum size of SIZ marker */
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#define GST_JPEG2000_PARSE_MIN_FRAME_SIZE (4+36)
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#define GST_JPEG2000_PARSE_J2K_MAGIC 0xFF4FFF51
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#define GST_JPEG2000_PARSE_SIZE_OF_J2K_MAGIC 4
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GST_DEBUG_CATEGORY (jpeg2000_parse_debug);
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#define GST_CAT_DEFAULT jpeg2000_parse_debug
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static GstStaticPadTemplate srctemplate =
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GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("image/x-jpc,"
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" width = (int)[1, MAX], height = (int)[1, MAX],"
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"colorspace = (string) { sRGB, sYUV, GRAY }," "parsed = (boolean) true")
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);
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static GstStaticPadTemplate sinktemplate =
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GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("image/x-jpc,"
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"colorspace = (string) { sRGB, sYUV, GRAY }")
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);
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#define parent_class gst_jpeg2000_parse_parent_class
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G_DEFINE_TYPE (GstJPEG2000Parse, gst_jpeg2000_parse, GST_TYPE_BASE_PARSE);
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static gboolean gst_jpeg2000_parse_start (GstBaseParse * parse);
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static gboolean gst_jpeg2000_parse_event (GstBaseParse * parse,
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GstEvent * event);
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static GstFlowReturn gst_jpeg2000_parse_handle_frame (GstBaseParse * parse,
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GstBaseParseFrame * frame, gint * skipsize);
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static void
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gst_jpeg2000_parse_class_init (GstJPEG2000ParseClass * klass)
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{
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GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
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GstBaseParseClass *parse_class = GST_BASE_PARSE_CLASS (klass);
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GST_DEBUG_CATEGORY_INIT (jpeg2000_parse_debug, "jpeg2000parse", 0,
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"jpeg 2000 parser");
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gst_element_class_add_static_pad_template (gstelement_class, &srctemplate);
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gst_element_class_add_static_pad_template (gstelement_class, &sinktemplate);
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gst_element_class_set_static_metadata (gstelement_class, "JPEG 2000 parser",
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"Codec/Parser/Video/Image",
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"Parses JPEG 2000 files", "Aaron Boxer <boxerab@gmail.com>");
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/* Override BaseParse vfuncs */
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parse_class->start = GST_DEBUG_FUNCPTR (gst_jpeg2000_parse_start);
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parse_class->sink_event = GST_DEBUG_FUNCPTR (gst_jpeg2000_parse_event);
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parse_class->handle_frame =
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GST_DEBUG_FUNCPTR (gst_jpeg2000_parse_handle_frame);
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}
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static void
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gst_jpeg2000_parse_init (GstJPEG2000Parse * jpeg2000parse)
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{
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GST_PAD_SET_ACCEPT_INTERSECT (GST_BASE_PARSE_SINK_PAD (jpeg2000parse));
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GST_PAD_SET_ACCEPT_TEMPLATE (GST_BASE_PARSE_SINK_PAD (jpeg2000parse));
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}
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static gboolean
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gst_jpeg2000_parse_start (GstBaseParse * parse)
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{
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GstJPEG2000Parse *jpeg2000parse = GST_JPEG2000_PARSE (parse);
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guint i;
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GST_DEBUG_OBJECT (jpeg2000parse, "start");
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gst_base_parse_set_min_frame_size (parse, GST_JPEG2000_PARSE_MIN_FRAME_SIZE);
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jpeg2000parse->width = 0;
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jpeg2000parse->height = 0;
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for (i = 0; i < GST_JPEG2000_PARSE_MAX_SUPPORTED_COMPONENTS; ++i) {
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jpeg2000parse->dx[i] = 0;
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jpeg2000parse->dy[i] = 0;
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}
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jpeg2000parse->sampling = GST_RTP_SAMPLING_NONE;
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return TRUE;
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}
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static gboolean
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gst_jpeg2000_parse_event (GstBaseParse * parse, GstEvent * event)
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{
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gboolean res = GST_BASE_PARSE_CLASS (parent_class)->sink_event (parse, event);
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_FLUSH_STOP:
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gst_base_parse_set_min_frame_size (parse,
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GST_JPEG2000_PARSE_MIN_FRAME_SIZE);
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break;
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default:
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break;
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}
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return res;
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}
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static GstFlowReturn
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gst_jpeg2000_parse_handle_frame (GstBaseParse * parse,
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GstBaseParseFrame * frame, gint * skipsize)
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{
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GstJPEG2000Parse *jpeg2000parse = GST_JPEG2000_PARSE (parse);
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GstMapInfo map;
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GstByteReader reader;
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GstFlowReturn ret = GST_FLOW_OK;
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guint eoc_offset = 0;
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GstCaps *current_caps = NULL;
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GstStructure *current_caps_struct = NULL;
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const gchar *colorspace = NULL;
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guint x0, y0, x1, y1;
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guint width, height;
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gboolean dimensions_changed = FALSE;
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guint8 dx[GST_JPEG2000_PARSE_MAX_SUPPORTED_COMPONENTS];
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guint8 dy[GST_JPEG2000_PARSE_MAX_SUPPORTED_COMPONENTS]; /* sub-sampling factors */
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gboolean subsampling_changed = FALSE;
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guint16 numcomps;
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guint16 compno;
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const char *sampling = NULL;
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GstRtpSampling samplingEnum = GST_RTP_SAMPLING_NONE;
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guint magic_offset = 0;
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if (!gst_buffer_map (frame->buffer, &map, GST_MAP_READ)) {
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GST_ERROR_OBJECT (jpeg2000parse, "Unable to map buffer");
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return GST_FLOW_ERROR;
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}
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gst_byte_reader_init (&reader, map.data, map.size);
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/* skip to beginning of frame */
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magic_offset = gst_byte_reader_masked_scan_uint32 (&reader, 0xffffffff,
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GST_JPEG2000_PARSE_J2K_MAGIC, 0, gst_byte_reader_get_remaining (&reader));
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if (magic_offset == -1) {
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*skipsize =
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gst_byte_reader_get_size (&reader) -
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GST_JPEG2000_PARSE_SIZE_OF_J2K_MAGIC;
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goto beach;
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} else {
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GST_DEBUG_OBJECT (jpeg2000parse, "Found magic at offset = %d",
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magic_offset);
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if (magic_offset > 0) {
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*skipsize = magic_offset;
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goto beach;
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}
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}
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/* 2 to skip marker size, and another 2 to skip rsiz field */
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if (!gst_byte_reader_skip (&reader,
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GST_JPEG2000_PARSE_SIZE_OF_J2K_MAGIC + 2 + 2))
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goto beach;
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if (!gst_byte_reader_get_uint32_be (&reader, &x1))
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goto beach;
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if (!gst_byte_reader_get_uint32_be (&reader, &y1))
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goto beach;
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if (!gst_byte_reader_get_uint32_be (&reader, &x0))
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goto beach;
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if (!gst_byte_reader_get_uint32_be (&reader, &y0))
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goto beach;
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/* sanity check on image dimensions */
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if (x1 < x0 || y1 < y0) {
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GST_ELEMENT_ERROR (jpeg2000parse, STREAM, DECODE, NULL,
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("Nonsensical image dimensions %d,%d,%d,%d", x0, y0, x1, y1));
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ret = GST_FLOW_NOT_NEGOTIATED;
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goto beach;
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}
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width = x1 - x0;
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height = y1 - y0;
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GST_DEBUG_OBJECT (jpeg2000parse, "Parsed image dimensions %d,%d", width,
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height);
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/* skip tile dimensions */
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if (!gst_byte_reader_skip (&reader, 4 * 4))
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goto beach;
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/* read number of components */
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if (!gst_byte_reader_get_uint16_be (&reader, &numcomps))
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goto beach;
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if (numcomps > GST_JPEG2000_PARSE_MAX_SUPPORTED_COMPONENTS) {
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GST_ELEMENT_ERROR (jpeg2000parse, STREAM, DECODE, NULL,
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("Unsupported number of components %d", numcomps));
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ret = GST_FLOW_NOT_NEGOTIATED;
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goto beach;
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}
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current_caps = gst_pad_get_current_caps (GST_BASE_PARSE_SINK_PAD (parse));
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if (!current_caps) {
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GST_ERROR_OBJECT (jpeg2000parse, "Unable to get current caps");
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ret = GST_FLOW_NOT_NEGOTIATED;
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goto beach;
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}
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current_caps_struct = gst_caps_get_structure (current_caps, 0);
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if (!current_caps_struct) {
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GST_ERROR_OBJECT (jpeg2000parse, "Unable to get structure of current caps");
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ret = GST_FLOW_NOT_NEGOTIATED;
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goto beach;
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}
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/* colorspace is a required field */
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colorspace = gst_structure_get_string (current_caps_struct, "colorspace");
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if (!colorspace) {
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GST_ERROR_OBJECT (jpeg2000parse, "Missing color space");
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ret = GST_FLOW_NOT_NEGOTIATED;
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goto beach;
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}
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for (compno = 0; compno < numcomps; ++compno) {
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/* skip Ssiz (precision and signed/unsigned bit ) */
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if (!gst_byte_reader_skip (&reader, 1))
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goto beach;
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if (!gst_byte_reader_get_uint8 (&reader, dx + compno))
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goto beach;
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if (!gst_byte_reader_get_uint8 (&reader, dy + compno))
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goto beach;
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GST_DEBUG_OBJECT (jpeg2000parse,
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"Parsed sub-sampling %d,%d for component %d", dx[compno], dy[compno],
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compno);
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}
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/* now we can set the dimensions and sub-sampling */
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if (width != jpeg2000parse->width || height != jpeg2000parse->height) {
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dimensions_changed = TRUE;
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}
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jpeg2000parse->width = width;
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jpeg2000parse->height = height;
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for (compno = 0; compno < numcomps; ++compno) {
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if (dx[compno] != jpeg2000parse->dx[compno]
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|| dy[compno] != jpeg2000parse->dy[compno]) {
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subsampling_changed = TRUE;
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}
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jpeg2000parse->dx[compno] = dx[compno];
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jpeg2000parse->dx[compno] = dy[compno];
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}
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/* we do not set sampling field for sub-sampled RGB or monochrome */
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for (compno = 0; compno < numcomps; ++compno) {
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if (strcmp (colorspace, "sYUV") && (dx[compno] > 1 || dy[compno] > 1)) {
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GST_WARNING_OBJECT (jpeg2000parse,
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"Unable to set sampling field for sub-sampled RGB or monochrome color spaces");
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goto set_caps;
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}
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}
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/* sanity check on sub-sampling */
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if (dx[1] != dx[2] || dy[1] != dy[2]) {
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GST_WARNING_OBJECT (jpeg2000parse,
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"Unable to set sampling field because chroma channel sub-sampling factors are not equal");
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goto set_caps;
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}
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if (!strcmp (colorspace, "sYUV")) {
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/* reject sub-sampled YUVA image */
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if (numcomps == 4) {
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guint i;
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for (i = 0; i < 4; ++i) {
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if (dx[i] > 1 || dy[i] > 1) {
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GST_WARNING_OBJECT (jpeg2000parse,
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"Unable to set sampling field for sub-sampled YUVA images");
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goto set_caps;
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}
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}
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sampling = GST_RTP_J2K_YBRA;
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samplingEnum = GST_RTP_SAMPLING_YBRA;
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} else if (numcomps == 3) {
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/* use sub-sampling from U chroma channel */
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if (dx[1] == 1 && dy[1] == 1) {
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sampling = GST_RTP_J2K_YBR444;
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samplingEnum = GST_RTP_SAMPLING_YBR444;
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} else if (dx[1] == 2 && dy[1] == 2) {
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sampling = GST_RTP_J2K_YBR420;
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samplingEnum = GST_RTP_SAMPLING_YBR420;
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} else if (dx[1] == 4 && dy[1] == 2) {
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sampling = GST_RTP_J2K_YBR410;
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samplingEnum = GST_RTP_SAMPLING_YBR410;
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} else if (dx[1] == 2 && dy[1] == 1) {
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sampling = GST_RTP_J2K_YBR422;
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samplingEnum = GST_RTP_SAMPLING_YBR422;
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} else {
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GST_WARNING_OBJECT (jpeg2000parse,
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"Unable to set sampling field for sub-sampling factors %d,%d",
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dx[1], dy[1]);
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goto set_caps;
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}
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}
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} else if (!strcmp (colorspace, "GRAY")) {
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sampling = GST_RTP_J2K_GRAYSCALE;
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samplingEnum = GST_RTP_SAMPLING_GRAYSCALE;
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} else {
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if (numcomps == 4) {
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sampling = GST_RTP_J2K_RGBA;
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samplingEnum = GST_RTP_SAMPLING_RGBA;
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} else {
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sampling = GST_RTP_J2K_RGB;
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samplingEnum = GST_RTP_SAMPLING_RGB;
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}
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}
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set_caps:
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if (dimensions_changed || subsampling_changed) {
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GstCaps *src_caps = NULL;
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gint fr_num, fr_denom;
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src_caps =
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gst_caps_new_simple (gst_structure_get_name (current_caps_struct),
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"width", G_TYPE_INT, jpeg2000parse->width, "height", G_TYPE_INT,
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jpeg2000parse->height, "colorspace", G_TYPE_STRING, colorspace, NULL);
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if (sampling) {
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gst_caps_set_simple (src_caps, "sampling", G_TYPE_STRING, sampling, NULL);
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}
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if (gst_structure_get_fraction (current_caps_struct, "framerate", &fr_num,
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&fr_denom)) {
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gst_caps_set_simple (src_caps, "framerate", GST_TYPE_FRACTION, fr_num,
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fr_denom, NULL);
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} else {
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GST_WARNING_OBJECT (jpeg2000parse, "No framerate set");
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}
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if (!gst_pad_set_caps (GST_BASE_PARSE_SRC_PAD (parse), src_caps)) {
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GST_ERROR_OBJECT (jpeg2000parse, "Unable to set source caps");
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ret = GST_FLOW_NOT_NEGOTIATED;
|
||||
gst_caps_unref (src_caps);
|
||||
goto beach;
|
||||
}
|
||||
|
||||
gst_caps_unref (src_caps);
|
||||
jpeg2000parse->sampling = samplingEnum;
|
||||
}
|
||||
|
||||
/* look for EOC end of codestream marker */
|
||||
eoc_offset = gst_byte_reader_masked_scan_uint32 (&reader, 0x0000ffff,
|
||||
0xFFD9, 0, gst_byte_reader_get_remaining (&reader));
|
||||
|
||||
if (eoc_offset != -1) {
|
||||
/* add 4 for eoc marker and eoc marker size */
|
||||
guint frame_size = gst_byte_reader_get_pos (&reader) + eoc_offset + 4;
|
||||
GST_DEBUG_OBJECT (jpeg2000parse,
|
||||
"Found EOC at offset = %d, frame size = %d", eoc_offset, frame_size);
|
||||
|
||||
if (frame_size < gst_byte_reader_get_size (&reader))
|
||||
goto beach;
|
||||
|
||||
gst_caps_unref (current_caps);
|
||||
gst_buffer_unmap (frame->buffer, &map);
|
||||
return gst_base_parse_finish_frame (parse, frame, frame_size);
|
||||
}
|
||||
|
||||
beach:
|
||||
if (current_caps)
|
||||
gst_caps_unref (current_caps);
|
||||
gst_buffer_unmap (frame->buffer, &map);
|
||||
return ret;
|
||||
|
||||
}
|
||||
66
gst/videoparsers/gstjpeg2000parse.h
Normal file
66
gst/videoparsers/gstjpeg2000parse.h
Normal file
|
|
@ -0,0 +1,66 @@
|
|||
/* GStreamer JPEG 2000 Parser
|
||||
* Copyright (C) <2016> Grok Image Compression Inc.
|
||||
* @author Aaron Boxer <boxerab@gmail.com>
|
||||
*
|
||||
* 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., 51 Franklin St, Fifth Floor,
|
||||
* Boston, MA 02110-1301, USA.
|
||||
*/
|
||||
|
||||
#ifndef __GST_JPEG2000_PARSE_H__
|
||||
#define __GST_JPEG2000_PARSE_H__
|
||||
|
||||
#include <gst/gst.h>
|
||||
#include <gst/base/gstadapter.h>
|
||||
#include <gst/base/gstbaseparse.h>
|
||||
#include "gstjpeg2000sampling.h"
|
||||
|
||||
G_BEGIN_DECLS
|
||||
#define GST_TYPE_JPEG2000_PARSE \
|
||||
(gst_jpeg2000_parse_get_type())
|
||||
#define GST_JPEG2000_PARSE(obj) \
|
||||
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_JPEG2000_PARSE,GstJPEG2000Parse))
|
||||
#define GST_JPEG2000_PARSE_CLASS(klass) \
|
||||
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_JPEG2000_PARSE,GstJPEG2000ParseClass))
|
||||
#define GST_IS_JPEG2000_PARSE(obj) \
|
||||
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_JPEG2000_PARSE))
|
||||
#define GST_IS_JPEG2000_PARSE_CLASS(klass) \
|
||||
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_JPEG2000_PARSE))
|
||||
GType gst_jpeg2000_parse_get_type (void);
|
||||
|
||||
typedef struct _GstJPEG2000Parse GstJPEG2000Parse;
|
||||
typedef struct _GstJPEG2000ParseClass GstJPEG2000ParseClass;
|
||||
|
||||
#define GST_JPEG2000_PARSE_MAX_SUPPORTED_COMPONENTS 4
|
||||
|
||||
struct _GstJPEG2000Parse
|
||||
{
|
||||
GstBaseParse baseparse;
|
||||
|
||||
guint width;
|
||||
guint height;
|
||||
|
||||
guint8 dx[GST_JPEG2000_PARSE_MAX_SUPPORTED_COMPONENTS];
|
||||
guint8 dy[GST_JPEG2000_PARSE_MAX_SUPPORTED_COMPONENTS]; /* subsampling factors */
|
||||
|
||||
GstRtpSampling sampling;
|
||||
};
|
||||
|
||||
struct _GstJPEG2000ParseClass
|
||||
{
|
||||
GstBaseParseClass parent_class;
|
||||
};
|
||||
|
||||
G_END_DECLS
|
||||
#endif
|
||||
|
|
@ -58,6 +58,22 @@ GRAYSCALE: basically, a single component image of just multilevels of grey.
|
|||
|
||||
#define GST_RTP_J2K_SAMPLING_LIST "sampling = (string) {\"RGB\", \"BGR\", \"RGBA\", \"BGRA\", \"YCbCrA\", \"YCbCr-4:4:4\", \"YCbCr-4:2:2\", \"YCbCr-4:2:0\", \"YCbCr-4:1:1\", \"GRAYSCALE\"}"
|
||||
|
||||
typedef enum
|
||||
{
|
||||
|
||||
GST_RTP_SAMPLING_NONE,
|
||||
GST_RTP_SAMPLING_RGB,
|
||||
GST_RTP_SAMPLING_BGR,
|
||||
GST_RTP_SAMPLING_RGBA,
|
||||
GST_RTP_SAMPLING_BGRA,
|
||||
GST_RTP_SAMPLING_YBRA,
|
||||
GST_RTP_SAMPLING_YBR444,
|
||||
GST_RTP_SAMPLING_YBR422,
|
||||
GST_RTP_SAMPLING_YBR420,
|
||||
GST_RTP_SAMPLING_YBR410,
|
||||
GST_RTP_SAMPLING_GRAYSCALE
|
||||
} GstRtpSampling;
|
||||
|
||||
|
||||
/*
|
||||
* GstJ2KMarker:
|
||||
|
|
|
|||
|
|
@ -28,6 +28,7 @@
|
|||
#include "gstmpegvideoparse.h"
|
||||
#include "gstmpeg4videoparse.h"
|
||||
#include "gstpngparse.h"
|
||||
#include "gstjpeg2000parse.h"
|
||||
#include "gstvc1parse.h"
|
||||
#include "gsth265parse.h"
|
||||
|
||||
|
|
@ -48,6 +49,8 @@ plugin_init (GstPlugin * plugin)
|
|||
GST_RANK_PRIMARY + 1, GST_TYPE_MPEG4VIDEO_PARSE);
|
||||
ret |= gst_element_register (plugin, "pngparse",
|
||||
GST_RANK_PRIMARY, GST_TYPE_PNG_PARSE);
|
||||
ret |= gst_element_register (plugin, "jpeg2000parse",
|
||||
GST_RANK_PRIMARY, GST_TYPE_JPEG2000_PARSE);
|
||||
ret |= gst_element_register (plugin, "h265parse",
|
||||
GST_RANK_SECONDARY, GST_TYPE_H265_PARSE);
|
||||
ret |= gst_element_register (plugin, "vc1parse",
|
||||
|
|
|
|||
Loading…
Reference in a new issue