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Add jp2k plugin. Fixes #550657.
Original commit message from CVS: * configure.ac: * ext/Makefile.am: * ext/jp2k/Makefile.am: * ext/jp2k/gstjasperdec.c: (gst_jasper_dec_base_init), (gst_jasper_dec_class_init), (gst_jasper_dec_init), (gst_jasper_dec_reset), (gst_jasper_dec_sink_setcaps), (gst_jasper_dec_negotiate), (gst_jasper_dec_get_picture), (gst_jasper_dec_chain), (gst_jasper_dec_set_property), (gst_jasper_dec_get_property), (gst_jasper_dec_change_state), (plugin_init): * ext/jp2k/gstjasperdec.h: Add jp2k plugin. Fixes #550657.
This commit is contained in:
Mark Nauwelaerts
parent
7359989bdb
commit
e262a72516
6 changed files with 841 additions and 0 deletions
15
ChangeLog
15
ChangeLog
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@ -1,3 +1,18 @@
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2008-09-09 Mark Nauwelaerts <mark.nauwelaerts@collabora.co.uk>
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* configure.ac:
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* ext/Makefile.am:
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* ext/jp2k/Makefile.am:
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* ext/jp2k/gstjasperdec.c: (gst_jasper_dec_base_init),
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(gst_jasper_dec_class_init), (gst_jasper_dec_init),
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(gst_jasper_dec_reset), (gst_jasper_dec_sink_setcaps),
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(gst_jasper_dec_negotiate), (gst_jasper_dec_get_picture),
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(gst_jasper_dec_chain), (gst_jasper_dec_set_property),
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(gst_jasper_dec_get_property), (gst_jasper_dec_change_state),
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(plugin_init):
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* ext/jp2k/gstjasperdec.h:
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Add jp2k plugin. Fixes #550657.
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2008-09-09 Edward Hervey <edward.hervey@collabora.co.uk>
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* gst/mpegdemux/flumpegdemux.c: (plugin_init):
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10
configure.ac
10
configure.ac
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@ -799,6 +799,14 @@ AG_GST_CHECK_FEATURE(JACK, Jack, jack, [
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AC_SUBST(JACK_LIBS)
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])
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dnl *** jp2k ***
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translit(dnm, m, l) AM_CONDITIONAL(USE_JP2K, true)
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AG_GST_CHECK_FEATURE(JP2K, [jp2k], jp2kdec, [
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AG_GST_CHECK_LIBHEADER(JP2K, jasper, jas_stream_fopen, , jasper/jasper.h,
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JP2K_LIBS="-ljasper")
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AC_SUBST(JP2K_LIBS)
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])
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dnl *** ladspa ***
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translit(dnm, m, l) AM_CONDITIONAL(USE_LADSPA, true)
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AG_GST_CHECK_FEATURE(LADSPA, [ladspa], ladspa, [
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@ -1296,6 +1304,7 @@ AM_CONDITIONAL(USE_FBDEV, false)
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AM_CONDITIONAL(USE_GSM, false)
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AM_CONDITIONAL(USE_IVORBIS, false)
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AM_CONDITIONAL(USE_JACK, false)
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AM_CONDITIONAL(USE_JP2K, false)
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AM_CONDITIONAL(USE_LADSPA, false)
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AM_CONDITIONAL(USE_LIBMMS, false)
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AM_CONDITIONAL(USE_METADATA, false)
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@ -1463,6 +1472,7 @@ ext/faad/Makefile
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ext/gsm/Makefile
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ext/ivorbis/Makefile
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ext/jack/Makefile
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ext/jp2k/Makefile
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ext/ladspa/Makefile
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ext/libmms/Makefile
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ext/Makefile
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@ -130,6 +130,12 @@ else
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JACK_DIR=
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endif
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if USE_JP2K
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JP2K_DIR = jp2k
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else
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JP2K_DIR =
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endif
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if USE_LADSPA
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LADSPA_DIR = ladspa
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else
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@ -329,6 +335,7 @@ SUBDIRS=\
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$(HERMES_DIR) \
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$(IVORBIS_DIR) \
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$(JACK_DIR) \
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$(JP2K_DIR) \
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$(LADSPA_DIR) \
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$(LCS_DIR) \
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$(LIBFAME_DIR) \
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@ -374,6 +381,7 @@ DIST_SUBDIRS = \
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ivorbis \
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ladspa \
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jack \
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jp2k \
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libmms \
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dts \
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divx \
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12
ext/jp2k/Makefile.am
Normal file
12
ext/jp2k/Makefile.am
Normal file
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@ -0,0 +1,12 @@
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plugin_LTLIBRARIES = libgstjp2k.la
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libgstjp2k_la_SOURCES = gstjasperdec.c
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libgstjp2k_la_CFLAGS = \
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$(GST_PLUGINS_BASE_CFLAGS) $(GST_CFLAGS) $(JP2K_CFLAGS)
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libgstjp2k_la_LIBADD = \
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$(GST_PLUGINS_BASE_LIBS) -lgstvideo-$(GST_MAJORMINOR) \
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$(GST_LIBS) $(JP2K_LIBS)
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libgstjp2k_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
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noinst_HEADERS = \
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gstjasperdec.h
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708
ext/jp2k/gstjasperdec.c
Normal file
708
ext/jp2k/gstjasperdec.c
Normal file
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@ -0,0 +1,708 @@
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/* GStreamer Jasper based j2k image decoder
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* Copyright (C) 2008 Mark Nauwelaerts <mnauw@users.sf.net>
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/**
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* SECTION:element-jasperdec
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*
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* Decodes jpeg2000 images.
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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 <gst/gst.h>
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#include <gst/video/video.h>
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#include <string.h>
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#include <jasper/jasper.h>
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#include "gstjasperdec.h"
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GST_DEBUG_CATEGORY_STATIC (gst_jasper_dec_debug);
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#define GST_CAT_DEFAULT gst_jasper_dec_debug
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static const GstElementDetails plugin_details =
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GST_ELEMENT_DETAILS ("Jasper JPEG2000 image decoder",
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"Codec/Decoder/Image",
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"Decodes JPEG2000 encoded images using jasper",
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"Mark Nauwelaerts <mnauw@users.sf.net>");
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enum
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{
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ARG_0,
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};
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static GstStaticPadTemplate gst_jasper_dec_sink_template =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("image/x-j2c, "
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"framerate = " GST_VIDEO_FPS_RANGE ", "
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"fields = (int) 1; " "image/jp2")
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);
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static GstStaticPadTemplate gst_jasper_dec_src_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB "; " GST_VIDEO_CAPS_BGR "; "
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GST_VIDEO_CAPS_RGBA "; " GST_VIDEO_CAPS_ARGB "; "
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GST_VIDEO_CAPS_BGRA "; " GST_VIDEO_CAPS_ABGR "; "
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GST_VIDEO_CAPS_RGBx "; " GST_VIDEO_CAPS_xRGB "; "
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GST_VIDEO_CAPS_BGRx "; " GST_VIDEO_CAPS_xBGR "; "
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GST_VIDEO_CAPS_YUV ("{ I420, YV12, YUY2, UYVY, AYUV, Y41B, Y42B }"))
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);
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static void gst_jasper_dec_base_init (gpointer g_class);
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static void gst_jasper_dec_class_init (GstJasperDecClass * klass);
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static void gst_jasper_dec_init (GstJasperDec * filter,
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GstJasperDecClass * klass);
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static void gst_jasper_dec_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_jasper_dec_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void gst_jasper_dec_reset (GstJasperDec * dec);
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static GstStateChangeReturn gst_jasper_dec_change_state (GstElement * element,
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GstStateChange transition);
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static gboolean gst_jasper_dec_sink_setcaps (GstPad * pad, GstCaps * caps);
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static GstFlowReturn gst_jasper_dec_chain (GstPad * pad, GstBuffer * buffer);
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/* minor trick:
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* keep original naming but use unique name here for a happy type system
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*/
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typedef GstJasperDec GstJp2kDec;
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typedef GstJasperDecClass GstJp2kDecClass;
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GST_BOILERPLATE (GstJp2kDec, gst_jasper_dec, GstElement, GST_TYPE_ELEMENT);
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static void
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gst_jasper_dec_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_jasper_dec_src_template));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_jasper_dec_sink_template));
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gst_element_class_set_details (element_class, &plugin_details);
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}
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/* initialize the plugin's class */
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static void
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gst_jasper_dec_class_init (GstJasperDecClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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gobject_class->set_property = gst_jasper_dec_set_property;
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gobject_class->get_property = gst_jasper_dec_get_property;
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gstelement_class->change_state =
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GST_DEBUG_FUNCPTR (gst_jasper_dec_change_state);
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}
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static void
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gst_jasper_dec_init (GstJasperDec * dec, GstJasperDecClass * klass)
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{
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dec->sinkpad =
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gst_pad_new_from_static_template (&gst_jasper_dec_sink_template, "sink");
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gst_pad_set_setcaps_function (dec->sinkpad,
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GST_DEBUG_FUNCPTR (gst_jasper_dec_sink_setcaps));
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gst_pad_set_chain_function (dec->sinkpad,
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GST_DEBUG_FUNCPTR (gst_jasper_dec_chain));
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gst_element_add_pad (GST_ELEMENT (dec), dec->sinkpad);
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dec->srcpad =
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gst_pad_new_from_static_template (&gst_jasper_dec_src_template, "src");
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gst_pad_use_fixed_caps (dec->srcpad);
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gst_element_add_pad (GST_ELEMENT (dec), dec->srcpad);
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dec->codec_data = NULL;
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dec->mat = NULL;
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gst_jasper_dec_reset (dec);
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}
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static void
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gst_jasper_dec_reset (GstJasperDec * dec)
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{
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if (dec->codec_data)
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gst_buffer_unref (dec->codec_data);
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dec->codec_data = NULL;
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if (dec->mat)
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jas_matrix_destroy (dec->mat);
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dec->mat = NULL;
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dec->fmt = -1;
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dec->clrspc = JAS_CLRSPC_UNKNOWN;
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dec->format = GST_VIDEO_FORMAT_UNKNOWN;
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}
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static gboolean
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gst_jasper_dec_sink_setcaps (GstPad * pad, GstCaps * caps)
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{
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GstJasperDec *dec;
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const GValue *framerate;
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GstStructure *s;
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const gchar *mimetype;
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guint32 fourcc;
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dec = GST_JASPER_DEC (GST_PAD_PARENT (pad));
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s = gst_caps_get_structure (caps, 0);
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mimetype = gst_structure_get_name (s);
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/* reset negotiation */
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dec->fmt = -1;
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dec->strip = 0;
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dec->format = GST_VIDEO_FORMAT_UNKNOWN;
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if (dec->codec_data) {
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gst_buffer_unref (dec->codec_data);
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dec->codec_data = NULL;
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}
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if (!strcmp (mimetype, "image/x-j2c")) {
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const GValue *codec_data;
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gint fields;
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/* we only handle single field, packetized input */
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if (gst_structure_get_value (s, "framerate") == NULL)
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goto refuse_caps;
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if (gst_structure_get_int (s, "fields", &fields) && fields != 1)
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goto refuse_caps;
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if (!gst_structure_get_fourcc (s, "fourcc", &fourcc))
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goto refuse_caps;
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switch (fourcc) {
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case GST_MAKE_FOURCC ('s', 'R', 'G', 'B'):
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dec->clrspc = JAS_CLRSPC_SRGB;
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break;
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case GST_MAKE_FOURCC ('s', 'Y', 'U', 'V'):
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dec->clrspc = JAS_CLRSPC_SYCBCR;
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break;
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default:
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goto refuse_caps;
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break;
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}
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dec->fmt = jas_image_strtofmt ("jpc");
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/* strip the j2c box stuff it is embedded in */
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dec->strip = 8;
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codec_data = gst_structure_get_value (s, "codec_data");
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if (codec_data) {
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dec->codec_data = gst_value_get_buffer (codec_data);
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gst_buffer_ref (dec->codec_data);
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}
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} else if (!strcmp (mimetype, "image/jp2"))
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dec->fmt = jas_image_strtofmt ("jp2");
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if (dec->fmt < 0)
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goto refuse_caps;
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|
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if ((framerate = gst_structure_get_value (s, "framerate")) != NULL) {
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dec->framerate_numerator = gst_value_get_fraction_numerator (framerate);
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dec->framerate_denominator = gst_value_get_fraction_denominator (framerate);
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GST_DEBUG_OBJECT (dec, "got framerate of %d/%d fps => packetized mode",
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dec->framerate_numerator, dec->framerate_denominator);
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} else {
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dec->framerate_numerator = 0;
|
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dec->framerate_denominator = 1;
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GST_DEBUG_OBJECT (dec, "no framerate, assuming single image");
|
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}
|
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|
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return TRUE;
|
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|
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refuse_caps:
|
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{
|
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GST_WARNING_OBJECT (dec, "refused caps %" GST_PTR_FORMAT, caps);
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gst_object_unref (dec);
|
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return FALSE;
|
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}
|
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}
|
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|
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static gboolean
|
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gst_jasper_dec_negotiate (GstJasperDec * dec, jas_image_t * image)
|
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{
|
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gint width, height, channels;
|
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gint i, j;
|
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gboolean negotiate = FALSE, ret = TRUE;
|
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jas_clrspc_t clrspc;
|
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GstCaps *allowed_caps, *caps;
|
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|
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width = jas_image_width (image);
|
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height = jas_image_height (image);
|
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channels = jas_image_numcmpts (image);
|
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|
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/* jp2c bitstream has no real colour space info (kept in container),
|
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* so decoder may only pretend to know, where it really does not */
|
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if (!jas_clrspc_isunknown (dec->clrspc)) {
|
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clrspc = dec->clrspc;
|
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GST_DEBUG_OBJECT (dec, "forcing container supplied colour space %d",
|
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clrspc);
|
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jas_image_setclrspc (image, clrspc);
|
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} else
|
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clrspc = jas_image_clrspc (image);
|
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|
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if (!width || !height || !channels || jas_clrspc_isunknown (clrspc))
|
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goto fail_image;
|
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|
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if (dec->width != width || dec->height != height ||
|
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dec->channels != channels || dec->clrspc != clrspc)
|
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negotiate = TRUE;
|
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|
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if (channels != 3)
|
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goto not_supported;
|
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|
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for (i = 0; i < channels; i++) {
|
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gint cheight, cwidth, depth, sgnd;
|
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|
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cheight = jas_image_cmptheight (image, i);
|
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cwidth = jas_image_cmptwidth (image, i);
|
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depth = jas_image_cmptprec (image, i);
|
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sgnd = jas_image_cmptsgnd (image, i);
|
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|
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GST_LOG_OBJECT (dec, "image component %d, %dx%d, depth %d, sgnd %d", i,
|
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cwidth, cheight, depth, sgnd);
|
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|
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if (depth != 8 || sgnd)
|
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goto not_supported;
|
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|
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if (dec->cheight[i] != cheight || dec->cwidth[i] != cwidth) {
|
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dec->cheight[i] = cheight;
|
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dec->cwidth[i] = cwidth;
|
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negotiate = TRUE;
|
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}
|
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}
|
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|
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if (!negotiate && dec->format != GST_VIDEO_FORMAT_UNKNOWN)
|
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goto done;
|
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|
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/* clear and refresh to new state */
|
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ret = FALSE;
|
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dec->format = GST_VIDEO_FORMAT_UNKNOWN;
|
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dec->width = width;
|
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dec->height = height;
|
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dec->channels = channels;
|
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|
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/* retrieve allowed caps, and find the first one that reasonably maps
|
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* 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)
|
||||
88
ext/jp2k/gstjasperdec.h
Normal file
88
ext/jp2k/gstjasperdec.h
Normal file
|
|
@ -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__ */
|
||||
Loading…
Reference in a new issue