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620 lines
16 KiB
C
620 lines
16 KiB
C
/* GStreamer Jasper based j2k image encoder
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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-jasperenc
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*
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* Encodes video to 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 "gstjasperenc.h"
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GST_DEBUG_CATEGORY_STATIC (gst_jasper_enc_debug);
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#define GST_CAT_DEFAULT gst_jasper_enc_debug
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static const GstElementDetails plugin_details =
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GST_ELEMENT_DETAILS ("Jasper JPEG2000 image encoder",
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"Codec/Decoder/Image",
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"Encodes video to JPEG2000 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_enc_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 (GST_VIDEO_CAPS_RGB "; " GST_VIDEO_CAPS_BGR "; "
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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 }"))
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);
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static GstStaticPadTemplate gst_jasper_enc_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 ("image/x-j2c, width = " GST_VIDEO_SIZE_RANGE ", height = "
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GST_VIDEO_SIZE_RANGE ", fourcc = (GstFourcc) { sRGB, sYUV },"
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"framerate = " GST_VIDEO_FPS_RANGE ", " "fields = (int) 1; "
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"image/x-jpc, width = " GST_VIDEO_SIZE_RANGE ", height = "
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GST_VIDEO_SIZE_RANGE ", fourcc = (GstFourcc) { sRGB, sYUV },"
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"framerate = " GST_VIDEO_FPS_RANGE ", " "fields = (int) 1; "
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"image/jp2")
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);
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static void gst_jasper_enc_base_init (gpointer g_class);
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static void gst_jasper_enc_class_init (GstJasperEncClass * klass);
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static void gst_jasper_enc_init (GstJasperEnc * filter,
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GstJasperEncClass * klass);
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static void gst_jasper_enc_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_jasper_enc_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void gst_jasper_enc_reset (GstJasperEnc * enc);
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static GstStateChangeReturn gst_jasper_enc_change_state (GstElement * element,
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GstStateChange transition);
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static gboolean gst_jasper_enc_sink_setcaps (GstPad * pad, GstCaps * caps);
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static GstFlowReturn gst_jasper_enc_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 GstJasperEnc GstJp2kEnc;
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typedef GstJasperEncClass GstJp2kEncClass;
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static void
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_do_init (GType object_type)
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{
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const GInterfaceInfo preset_interface_info = {
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NULL, /* interface_init */
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NULL, /* interface_finalize */
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NULL /* interface_data */
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};
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g_type_add_interface_static (object_type, GST_TYPE_PRESET,
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&preset_interface_info);
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}
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GST_BOILERPLATE_FULL (GstJp2kEnc, gst_jasper_enc, GstElement, GST_TYPE_ELEMENT,
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_do_init);
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static void
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gst_jasper_enc_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_enc_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_enc_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_enc_class_init (GstJasperEncClass * 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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GST_DEBUG_CATEGORY_INIT (gst_jasper_enc_debug, "jp2kenc", 0,
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"Jasper JPEG2000 encoder");
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gobject_class->set_property = gst_jasper_enc_set_property;
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gobject_class->get_property = gst_jasper_enc_get_property;
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/* FIXME add some encoder properties */
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gstelement_class->change_state =
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GST_DEBUG_FUNCPTR (gst_jasper_enc_change_state);
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}
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static void
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gst_jasper_enc_init (GstJasperEnc * enc, GstJasperEncClass * klass)
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{
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enc->sinkpad =
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gst_pad_new_from_static_template (&gst_jasper_enc_sink_template, "sink");
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gst_pad_set_setcaps_function (enc->sinkpad,
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GST_DEBUG_FUNCPTR (gst_jasper_enc_sink_setcaps));
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gst_pad_set_chain_function (enc->sinkpad,
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GST_DEBUG_FUNCPTR (gst_jasper_enc_chain));
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gst_element_add_pad (GST_ELEMENT (enc), enc->sinkpad);
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enc->srcpad =
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gst_pad_new_from_static_template (&gst_jasper_enc_src_template, "src");
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gst_pad_use_fixed_caps (enc->srcpad);
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gst_element_add_pad (GST_ELEMENT (enc), enc->srcpad);
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enc->buf = NULL;
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gst_jasper_enc_reset (enc);
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}
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static void
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gst_jasper_enc_reset (GstJasperEnc * enc)
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{
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if (enc->buf)
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g_free (enc->buf);
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enc->buf = NULL;
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if (enc->image)
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jas_image_destroy (enc->image);
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enc->image = NULL;
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enc->fmt = -1;
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enc->mode = GST_JP2ENC_MODE_J2C;
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enc->clrspc = JAS_CLRSPC_UNKNOWN;
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enc->format = GST_VIDEO_FORMAT_UNKNOWN;
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}
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static gboolean
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gst_jasper_enc_set_src_caps (GstJasperEnc * enc)
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{
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GstCaps *caps;
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guint32 fourcc;
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gboolean ret;
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GstCaps *peercaps;
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peercaps = gst_pad_peer_get_caps (enc->srcpad);
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if (peercaps) {
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guint i, n;
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n = gst_caps_get_size (peercaps);
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for (i = 0; i < n; i++) {
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GstStructure *s = gst_caps_get_structure (peercaps, i);
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const gchar *name = gst_structure_get_name (s);
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if (!strcmp (name, "image/x-j2c")) {
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enc->mode = GST_JP2ENC_MODE_J2C;
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break;
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} else if (!strcmp (name, "image/x-jpc")) {
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enc->mode = GST_JP2ENC_MODE_JPC;
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break;
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} else if (!strcmp (name, "image/jp2")) {
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enc->mode = GST_JP2ENC_MODE_JP2;
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break;
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}
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}
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gst_caps_unref (peercaps);
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}
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/* enumerated colourspace */
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if (gst_video_format_is_rgb (enc->format)) {
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fourcc = GST_MAKE_FOURCC ('s', 'R', 'G', 'B');
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} else {
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fourcc = GST_MAKE_FOURCC ('s', 'Y', 'U', 'V');
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}
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switch (enc->mode) {
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case GST_JP2ENC_MODE_J2C:
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caps =
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gst_caps_new_simple ("image/x-j2c", "width", G_TYPE_INT, enc->width,
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"height", G_TYPE_INT, enc->height, "fourcc", GST_TYPE_FOURCC, fourcc,
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NULL);
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break;
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case GST_JP2ENC_MODE_JPC:
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caps =
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gst_caps_new_simple ("image/x-jpc", "width", G_TYPE_INT, enc->width,
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"height", G_TYPE_INT, enc->height, "fourcc", GST_TYPE_FOURCC, fourcc,
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NULL);
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break;
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case GST_JP2ENC_MODE_JP2:
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caps = gst_caps_new_simple ("image/jp2", "width", G_TYPE_INT, enc->width,
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"height", G_TYPE_INT, enc->height, "fourcc", GST_TYPE_FOURCC, fourcc,
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NULL);
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break;
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default:
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g_assert_not_reached ();
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}
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if (enc->fps_den > 0)
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gst_caps_set_simple (caps,
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"framerate", GST_TYPE_FRACTION, enc->fps_num, enc->fps_den, NULL);
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if (enc->par_den > 0)
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gst_caps_set_simple (caps,
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"pixel-aspect-ratio", GST_TYPE_FRACTION, enc->par_num, enc->par_den,
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NULL);
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ret = gst_pad_set_caps (enc->srcpad, caps);
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gst_caps_unref (caps);
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return ret;
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}
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static gboolean
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gst_jasper_enc_init_encoder (GstJasperEnc * enc)
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{
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jas_image_cmptparm_t param[GST_JASPER_ENC_MAX_COMPONENT];
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gint i;
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switch (enc->mode) {
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case GST_JP2ENC_MODE_J2C:
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case GST_JP2ENC_MODE_JPC:
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enc->fmt = jas_image_strtofmt ("jpc");
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break;
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case GST_JP2ENC_MODE_JP2:
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enc->fmt = jas_image_strtofmt ("jp2");
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break;
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}
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if (gst_video_format_is_rgb (enc->format))
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enc->clrspc = JAS_CLRSPC_SRGB;
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else
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enc->clrspc = JAS_CLRSPC_SYCBCR;
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if (enc->buf) {
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g_free (enc->buf);
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enc->buf = NULL;
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}
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enc->buf = g_new0 (glong, enc->width);
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if (enc->image) {
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jas_image_destroy (enc->image);
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enc->image = NULL;
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}
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for (i = 0; i < enc->channels; ++i) {
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param[i].tlx = 0;
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param[i].tly = 0;
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param[i].prec = 8;
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param[i].sgnd = 0;
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param[i].height = enc->cheight[i];
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param[i].width = enc->cwidth[i];
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param[i].hstep = enc->height / param[i].height;
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param[i].vstep = enc->width / param[i].width;
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}
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if (!(enc->image = jas_image_create (enc->channels, param, enc->clrspc)))
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return FALSE;
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return TRUE;
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}
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static gboolean
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gst_jasper_enc_sink_setcaps (GstPad * pad, GstCaps * caps)
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{
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GstJasperEnc *enc;
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GstStructure *s;
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const gchar *mimetype;
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GstVideoFormat format;
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gint width, height;
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gint fps_num, fps_den;
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gint par_num, par_den;
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gint i;
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enc = GST_JASPER_ENC (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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/* get info from caps */
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if (!gst_video_format_parse_caps (caps, &format, &width, &height))
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goto refuse_caps;
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/* optional; pass along if present */
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fps_num = fps_den = -1;
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par_num = par_den = -1;
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gst_video_parse_caps_framerate (caps, &fps_num, &fps_den);
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gst_video_parse_caps_pixel_aspect_ratio (caps, &par_num, &par_den);
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if (width == enc->width && height == enc->height && enc->format == format
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&& fps_num == enc->fps_num && fps_den == enc->fps_den
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&& par_num == enc->par_num && par_den == enc->par_den)
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return TRUE;
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/* store input description */
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enc->format = format;
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enc->width = width;
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enc->height = height;
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enc->fps_num = fps_num;
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enc->fps_den = fps_den;
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enc->par_num = par_num;
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enc->par_den = par_den;
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/* prepare a cached image description */
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enc->channels = 3 + (gst_video_format_has_alpha (format) ? 1 : 0);
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for (i = 0; i < enc->channels; ++i) {
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enc->cwidth[i] = gst_video_format_get_component_width (format, i, width);
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enc->cheight[i] = gst_video_format_get_component_height (format, i, height);
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enc->offset[i] = gst_video_format_get_component_offset (format, i, width,
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height);
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enc->stride[i] = gst_video_format_get_row_stride (format, i, width);
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enc->inc[i] = gst_video_format_get_pixel_stride (format, i);
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}
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if (!gst_jasper_enc_set_src_caps (enc))
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goto setcaps_failed;
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if (!gst_jasper_enc_init_encoder (enc))
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goto setup_failed;
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return TRUE;
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/* ERRORS */
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setup_failed:
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{
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GST_ELEMENT_ERROR (enc, LIBRARY, SETTINGS, (NULL), (NULL));
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return FALSE;
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}
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setcaps_failed:
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{
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GST_WARNING_OBJECT (enc, "Setting src caps failed");
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GST_ELEMENT_ERROR (enc, LIBRARY, SETTINGS, (NULL), (NULL));
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return FALSE;
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}
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refuse_caps:
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{
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GST_WARNING_OBJECT (enc, "refused caps %" GST_PTR_FORMAT, caps);
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gst_object_unref (enc);
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return FALSE;
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}
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}
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static GstFlowReturn
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gst_jasper_enc_get_data (GstJasperEnc * enc, guint8 * data, GstBuffer ** outbuf)
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{
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GstFlowReturn ret = GST_FLOW_OK;
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jas_stream_t *stream = NULL;
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gint i;
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guint size, boxsize;
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g_return_val_if_fail (outbuf != NULL, GST_FLOW_ERROR);
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*outbuf = NULL;
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boxsize = (enc->mode == GST_JP2ENC_MODE_J2C) ? 8 : 0;
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if (!(stream = jas_stream_memopen (NULL, 0)))
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goto fail_stream;
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for (i = 0; i < enc->channels; ++i) {
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gint x, y, cwidth, cheight, inc, stride, cmpt;
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guint8 *row_pix, *in_pix;
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glong *tb;
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cmpt = i;
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inc = enc->inc[i];
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stride = enc->stride[i];
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cheight = enc->cheight[cmpt];
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cwidth = enc->cwidth[cmpt];
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GST_LOG_OBJECT (enc,
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"write component %d<=%d, size %dx%d, offset %d, inc %d, stride %d",
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i, cmpt, cwidth, cheight, enc->offset[i], inc, stride);
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row_pix = data + enc->offset[i];
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for (y = 0; y < cheight; y++) {
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in_pix = row_pix;
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tb = enc->buf;
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for (x = 0; x < cwidth; x++) {
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*tb = *in_pix;
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in_pix += inc;
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tb++;
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}
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if (jas_image_writecmpt2 (enc->image, cmpt, 0, y, cwidth, 1, enc->buf))
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goto fail_image;
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row_pix += stride;
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}
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}
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GST_LOG_OBJECT (enc, "all components written");
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if (jas_image_encode (enc->image, stream, enc->fmt, ""))
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goto fail_encode;
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GST_LOG_OBJECT (enc, "image encoded");
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size = jas_stream_length (stream);
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ret = gst_pad_alloc_buffer_and_set_caps (enc->srcpad,
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GST_BUFFER_OFFSET_NONE, size + boxsize, GST_PAD_CAPS (enc->srcpad),
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outbuf);
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if (ret != GST_FLOW_OK)
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goto no_buffer;
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data = GST_BUFFER_DATA (*outbuf);
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if (jas_stream_flush (stream) ||
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jas_stream_rewind (stream) < 0 ||
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jas_stream_read (stream, data + boxsize, size) < size)
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goto fail_image_out;
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if (boxsize) {
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/* write atom prefix */
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GST_WRITE_UINT32_BE (data, size + 8);
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GST_WRITE_UINT32_LE (data + 4, GST_MAKE_FOURCC ('j', 'p', '2', 'c'));
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}
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done:
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if (stream)
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jas_stream_close (stream);
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return ret;
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/* ERRORS */
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fail_stream:
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{
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GST_DEBUG_OBJECT (enc, "Failed to create inputstream.");
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goto fail;
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}
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fail_encode:
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{
|
|
GST_DEBUG_OBJECT (enc, "Failed to encode image.");
|
|
goto fail;
|
|
}
|
|
fail_image:
|
|
{
|
|
GST_DEBUG_OBJECT (enc, "Failed to process input image.");
|
|
goto fail;
|
|
}
|
|
fail_image_out:
|
|
{
|
|
GST_DEBUG_OBJECT (enc, "Failed to process encoded image.");
|
|
goto fail;
|
|
}
|
|
fail:
|
|
{
|
|
if (*outbuf)
|
|
gst_buffer_unref (*outbuf);
|
|
*outbuf = NULL;
|
|
GST_ELEMENT_ERROR (enc, STREAM, ENCODE, (NULL), (NULL));
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
no_buffer:
|
|
{
|
|
GST_DEBUG_OBJECT (enc, "Failed to create outbuffer - %s",
|
|
gst_flow_get_name (ret));
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_jasper_enc_chain (GstPad * pad, GstBuffer * buf)
|
|
{
|
|
GstJasperEnc *enc;
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
GstBuffer *outbuf = NULL;
|
|
guint8 *data;
|
|
gboolean discont = FALSE;
|
|
|
|
enc = GST_JASPER_ENC (gst_pad_get_parent (pad));
|
|
|
|
if (enc->fmt < 0)
|
|
goto not_negotiated;
|
|
|
|
GST_LOG_OBJECT (enc, "buffer with ts: %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));
|
|
|
|
discont = GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DISCONT);
|
|
|
|
/* now really feed the data to encoder */
|
|
data = GST_BUFFER_DATA (buf);
|
|
ret = gst_jasper_enc_get_data (enc, data, &outbuf);
|
|
|
|
if (outbuf) {
|
|
gst_buffer_copy_metadata (outbuf, buf, GST_BUFFER_COPY_TIMESTAMPS);
|
|
if (discont)
|
|
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
|
|
}
|
|
|
|
if (ret == GST_FLOW_OK && outbuf)
|
|
ret = gst_pad_push (enc->srcpad, outbuf);
|
|
|
|
done:
|
|
gst_buffer_unref (buf);
|
|
gst_object_unref (enc);
|
|
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
not_negotiated:
|
|
{
|
|
GST_ELEMENT_ERROR (enc, CORE, NEGOTIATION, (NULL),
|
|
("format wasn't negotiated before chain function"));
|
|
ret = GST_FLOW_NOT_NEGOTIATED;
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_jasper_enc_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstJasperEnc *filter;
|
|
|
|
filter = GST_JASPER_ENC (object);
|
|
|
|
switch (prop_id) {
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_jasper_enc_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstJasperEnc *filter;
|
|
|
|
filter = GST_JASPER_ENC (object);
|
|
|
|
switch (prop_id) {
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_jasper_enc_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
|
|
GstJasperEnc *enc = GST_JASPER_ENC (element);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_NULL_TO_READY:
|
|
if (jas_init ())
|
|
goto fail_init;
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
if (ret == GST_STATE_CHANGE_FAILURE)
|
|
return ret;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
gst_jasper_enc_reset (enc);
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_NULL:
|
|
jas_cleanup ();
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
fail_init:
|
|
{
|
|
GST_ELEMENT_ERROR (enc, LIBRARY, INIT, (NULL), (NULL));
|
|
return GST_STATE_CHANGE_FAILURE;
|
|
}
|
|
}
|