gstreamer/ext/tarkin/gsttarkindec.c

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/* GStreamer
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <string.h>
#include "gsttarkindec.h"
static GstPadTemplate *dec_src_template, *dec_sink_template;
/* elementfactory information */
GstElementDetails tarkindec_details = {
"Ogg Tarkin decoder",
"Filter/Video/Decoder",
"Decodes video in OGG Tarkin format",
"Monty <monty@xiph.org>, "
"Wim Taymans <wim.taymans@chello.be>",
};
/* TarkinDec signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0,
ARG_BITRATE,
};
static void gst_tarkindec_base_init (gpointer g_class);
static void gst_tarkindec_class_init (TarkinDecClass *klass);
static void gst_tarkindec_init (TarkinDec *arkindec);
static void gst_tarkindec_chain (GstPad *pad, GstData *_data);
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),
gst_tarkindec_base_init,
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 GstCaps*
tarkin_caps_factory (void)
{
return
gst_caps_new (
"tarkin_tarkin",
"application/ogg",
NULL);
}
static GstCaps*
raw_caps_factory (void)
{
return
GST_CAPS_NEW (
"tarkin_raw",
"video/x-raw-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_RANGE (0, G_MAXINT),
"height", GST_PROPS_INT_RANGE (0, G_MAXINT),
"framerate", GST_PROPS_FLOAT_RANGE (0, G_MAXFLOAT)
);
}
static void
gst_tarkindec_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
GstCaps *raw_caps, *tarkin_caps;
raw_caps = raw_caps_factory ();
tarkin_caps = tarkin_caps_factory ();
dec_sink_template = gst_pad_template_new ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
tarkin_caps,
NULL);
dec_src_template = gst_pad_template_new ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
raw_caps,
NULL);
gst_element_class_add_pad_template (element_class, dec_sink_template);
gst_element_class_add_pad_template (element_class, dec_src_template);
gst_element_class_set_details (element_class, &tarkindec_details);
}
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, GstData *_data)
{
GstBuffer *buf = GST_BUFFER (_data);
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 (tarkindec, CORE, NEGOTATION, NULL, ("decoder not initialized (input is not tarkin?)"));
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/x-raw-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),
"framerate", GST_PROPS_FLOAT (0.) /* FIXME!!! */
)) <= 0)
{
gst_element_error (tarkindec, CORE, NEGOTATION, NULL, ("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, GST_DATA (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;
}
}