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-rw-r--r--ext/tarkin/gsttarkindec.c301
1 files changed, 301 insertions, 0 deletions
diff --git a/ext/tarkin/gsttarkindec.c b/ext/tarkin/gsttarkindec.c
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+++ b/ext/tarkin/gsttarkindec.c
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+/* Gnome-Streamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * 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.
+ */
+
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "gsttarkindec.h"
+
+extern GstPadTemplate *dec_src_template, *dec_sink_template;
+
+/* elementfactory information */
+GstElementDetails tarkindec_details = {
+ "Ogg Tarkin decoder",
+ "Filter/Video/Decoder",
+ "Decodes video in OGG Tarkin format",
+ VERSION,
+ "Monty <monty@xiph.org>, "
+ "Wim Taymans <wim.taymans@chello.be>",
+ "(C) 2002",
+};
+
+/* TarkinDec signals and args */
+enum
+{
+ /* FILL ME */
+ LAST_SIGNAL
+};
+
+enum
+{
+ ARG_0,
+ ARG_BITRATE,
+};
+
+static void gst_tarkindec_class_init (TarkinDecClass *klass);
+static void gst_tarkindec_init (TarkinDec *arkindec);
+
+static void gst_tarkindec_chain (GstPad *pad, GstBuffer *buf);
+static void gst_tarkindec_setup (TarkinDec *tarkindec);
+static GstElementStateReturn
+ gst_tarkindec_change_state (GstElement *element);
+
+static void gst_tarkindec_get_property (GObject *object, guint prop_id, GValue *value,
+ GParamSpec *pspec);
+static void gst_tarkindec_set_property (GObject *object, guint prop_id, const GValue *value,
+ GParamSpec *pspec);
+
+static GstElementClass *parent_class = NULL;
+/*static guint gst_tarkindec_signals[LAST_SIGNAL] = { 0 }; */
+
+GType
+tarkindec_get_type (void)
+{
+ static GType tarkindec_type = 0;
+
+ if (!tarkindec_type) {
+ static const GTypeInfo tarkindec_info = {
+ sizeof (TarkinDecClass),
+ NULL,
+ NULL,
+ (GClassInitFunc) gst_tarkindec_class_init,
+ NULL,
+ NULL,
+ sizeof (TarkinDec),
+ 0,
+ (GInstanceInitFunc) gst_tarkindec_init,
+ };
+
+ tarkindec_type = g_type_register_static (GST_TYPE_ELEMENT, "TarkinDec", &tarkindec_info, 0);
+ }
+ return tarkindec_type;
+}
+
+static void
+gst_tarkindec_class_init (TarkinDecClass *klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+
+ gobject_class = (GObjectClass *) klass;
+ gstelement_class = (GstElementClass *) klass;
+
+ g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_BITRATE,
+ g_param_spec_int ("bitrate", "bitrate", "bitrate",
+ G_MININT, G_MAXINT, 3000, G_PARAM_READWRITE));
+
+ parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
+
+ gobject_class->set_property = gst_tarkindec_set_property;
+ gobject_class->get_property = gst_tarkindec_get_property;
+
+ gstelement_class->change_state = gst_tarkindec_change_state;
+}
+
+static void
+gst_tarkindec_init (TarkinDec * tarkindec)
+{
+ tarkindec->sinkpad = gst_pad_new_from_template (dec_sink_template, "sink");
+ gst_element_add_pad (GST_ELEMENT (tarkindec), tarkindec->sinkpad);
+ gst_pad_set_chain_function (tarkindec->sinkpad, gst_tarkindec_chain);
+
+ tarkindec->srcpad = gst_pad_new_from_template (dec_src_template, "src");
+ gst_element_add_pad (GST_ELEMENT (tarkindec), tarkindec->srcpad);
+
+ tarkindec->bitrate = 3000;
+ tarkindec->setup = FALSE;
+ tarkindec->nheader = 0;
+
+ /* we're chained and we can deal with events */
+ GST_FLAG_SET (tarkindec, GST_ELEMENT_EVENT_AWARE);
+}
+
+static void
+gst_tarkindec_setup (TarkinDec *tarkindec)
+{
+ tarkindec->tarkin_stream = tarkin_stream_new ();
+
+ ogg_sync_init (&tarkindec->oy);
+ ogg_stream_init (&tarkindec->os, 1);
+ tarkin_info_init (&tarkindec->ti);
+ tarkin_comment_init (&tarkindec->tc);
+
+ tarkindec->setup = TRUE;
+}
+
+static void
+gst_tarkindec_chain (GstPad *pad, GstBuffer *buf)
+{
+ TarkinDec *tarkindec;
+
+ g_return_if_fail (pad != NULL);
+ g_return_if_fail (GST_IS_PAD (pad));
+ g_return_if_fail (buf != NULL);
+
+ tarkindec = GST_TARKINDEC (gst_pad_get_parent (pad));
+
+ if (!tarkindec->setup) {
+ gst_element_error (GST_ELEMENT (tarkindec), "decoder not initialized (input is not audio?)");
+ if (GST_IS_BUFFER (buf))
+ gst_buffer_unref (buf);
+ else
+ gst_pad_event_default (pad, GST_EVENT (buf));
+ return;
+ }
+
+ if (GST_IS_EVENT (buf)) {
+ switch (GST_EVENT_TYPE (buf)) {
+ case GST_EVENT_EOS:
+ default:
+ gst_pad_event_default (pad, GST_EVENT (buf));
+ break;
+ }
+ }
+ else {
+ gchar *data;
+ gulong size;
+ gchar *buffer;
+ guchar *rgb;
+ TarkinTime date;
+ TarkinVideoLayerDesc *layer;
+
+ /* data to decode */
+ data = GST_BUFFER_DATA (buf);
+ size = GST_BUFFER_SIZE (buf);
+
+ buffer = ogg_sync_buffer(&tarkindec->oy, size);
+ memcpy (buffer, data, size);
+ ogg_sync_wrote(&tarkindec->oy, size);
+
+ if (ogg_sync_pageout (&tarkindec->oy, &tarkindec->og)) {
+ ogg_stream_pagein (&tarkindec->os, &tarkindec->og);
+
+ while (ogg_stream_packetout (&tarkindec->os, &tarkindec->op)) {
+ if (tarkindec->op.e_o_s)
+ break;
+ if (tarkindec->nheader < 3) { /* 3 first packets to headerin */
+ tarkin_synthesis_headerin (&tarkindec->ti, &tarkindec->tc, &tarkindec->op);
+
+ if (tarkindec->nheader == 2) {
+ tarkin_synthesis_init (tarkindec->tarkin_stream, &tarkindec->ti);
+ }
+ tarkindec->nheader++;
+ } else {
+ tarkin_synthesis_packetin (tarkindec->tarkin_stream, &tarkindec->op);
+
+ while (tarkin_synthesis_frameout (tarkindec->tarkin_stream, &rgb, 0, &date) == 0) {
+ GstBuffer *outbuf;
+
+ layer = &tarkindec->tarkin_stream->layer->desc;
+
+ if (!GST_PAD_CAPS (tarkindec->srcpad)) {
+ if (!gst_pad_try_set_caps (tarkindec->srcpad,
+ GST_CAPS_NEW (
+ "tarkin_raw",
+ "video/raw",
+ "format", GST_PROPS_FOURCC (GST_STR_FOURCC ("RGB ")),
+ "bpp", GST_PROPS_INT (24),
+ "depth", GST_PROPS_INT (24),
+ "endianness", GST_PROPS_INT (G_BYTE_ORDER),
+ "red_mask", GST_PROPS_INT (0xff0000),
+ "green_mask", GST_PROPS_INT (0xff00),
+ "blue_mask", GST_PROPS_INT (0xff),
+ "width", GST_PROPS_INT (layer->width),
+ "height", GST_PROPS_INT (layer->height)
+ )))
+ {
+ gst_element_error (GST_ELEMENT (tarkindec), "could not output format");
+ gst_buffer_unref (buf);
+ return;
+ }
+ }
+ outbuf = gst_buffer_new ();
+ GST_BUFFER_DATA (outbuf) = rgb;
+ GST_BUFFER_SIZE (outbuf) = layer->width * layer->height * 3;
+ GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_DONTFREE);
+ gst_pad_push (tarkindec->srcpad, outbuf);
+
+ tarkin_synthesis_freeframe (tarkindec->tarkin_stream, rgb);
+ }
+ }
+ }
+ }
+ gst_buffer_unref (buf);
+ }
+}
+
+static GstElementStateReturn
+gst_tarkindec_change_state (GstElement *element)
+{
+ TarkinDec *tarkindec;
+
+ tarkindec = GST_TARKINDEC (element);
+
+ switch (GST_STATE_TRANSITION (element)) {
+ case GST_STATE_READY_TO_PAUSED:
+ gst_tarkindec_setup (tarkindec);
+ break;
+ case GST_STATE_PAUSED_TO_READY:
+ break;
+ default:
+ break;
+ }
+
+ return parent_class->change_state (element);
+}
+
+static void
+gst_tarkindec_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
+{
+ TarkinDec *tarkindec;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail (GST_IS_TARKINDEC (object));
+
+ tarkindec = GST_TARKINDEC (object);
+
+ switch (prop_id) {
+ case ARG_BITRATE:
+ g_value_set_int (value, tarkindec->bitrate);
+ break;
+ default:
+ break;
+ }
+}
+
+static void
+gst_tarkindec_set_property (GObject *object, guint prop_id, const GValue *value,
+ GParamSpec *pspec)
+{
+ TarkinDec *tarkindec;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail (GST_IS_TARKINDEC (object));
+
+ tarkindec = GST_TARKINDEC (object);
+
+ switch (prop_id) {
+ case ARG_BITRATE:
+ tarkindec->bitrate = g_value_get_int (value);
+ break;
+ default:
+ break;
+ }
+}
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