--- /dev/null
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ * <2002> Wim Taymans <wim.taymans@chello.be>
+ *
+ * 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 <string.h>
+
+#include "gstcdxaparse.h"
+
+#define MAKE_FOUR_CC(a,b,c,d) ( ((guint32)a) | (((guint32)b)<< 8) | \
+ ((guint32)c)<<16 | (((guint32)d)<<24) )
+
+
+/* RIFF types */
+#define GST_RIFF_TAG_RIFF MAKE_FOUR_CC('R','I','F','F')
+#define GST_RIFF_RIFF_CDXA MAKE_FOUR_CC('C','D','X','A')
+
+
+#define GST_RIFF_TAG_fmt MAKE_FOUR_CC('f','m','t',' ')
+#define GST_RIFF_TAG_data MAKE_FOUR_CC('d','a','t','a')
+
+
+/* elementfactory information */
+static GstElementDetails gst_cdxa_parse_details = {
+ ".dat parser",
+ "Parser/Video",
+ "Parse a .dat file (VCD) into raw mpeg1",
+ VERSION,
+ "Wim Taymans <wim.taymans@tvd.be>",
+ "(C) 2002",
+};
+
+static GstCaps* cdxa_typefind (GstBuffer *buf, gpointer private);
+
+/* typefactory for 'cdxa' */
+static GstTypeDefinition cdxadefinition = {
+ "cdxaparse_video/avi",
+ "video/avi",
+ ".dat",
+ cdxa_typefind,
+};
+
+/* CDXAParse signals and args */
+enum {
+ /* FILL ME */
+ LAST_SIGNAL
+};
+
+enum {
+ ARG_0,
+ ARG_BITRATE,
+ ARG_MEDIA_TIME,
+ ARG_CURRENT_TIME,
+ /* FILL ME */
+};
+
+GST_PADTEMPLATE_FACTORY (sink_templ,
+ "sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_CAPS_NEW (
+ "cdxaparse_sink",
+ "video/avi",
+ "RIFF", GST_PROPS_STRING ("CDXA")
+ )
+)
+
+GST_PADTEMPLATE_FACTORY (src_templ,
+ "src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_CAPS_NEW (
+ "cdxaparse_src",
+ "video/mpeg",
+ "mpegversion", GST_PROPS_INT (1),
+ "systemstream", GST_PROPS_BOOLEAN (TRUE)
+ )
+)
+
+static void gst_cdxa_parse_class_init (GstCDXAParseClass *klass);
+static void gst_cdxa_parse_init (GstCDXAParse *cdxa_parse);
+
+static void gst_cdxa_parse_loop (GstElement *element);
+
+static GstElementStateReturn
+ gst_cdxa_parse_change_state (GstElement *element);
+
+
+static GstElementClass *parent_class = NULL;
+//static guint gst_cdxa_parse_signals[LAST_SIGNAL] = { 0 };
+
+GType
+gst_cdxa_parse_get_type(void)
+{
+ static GType cdxa_parse_type = 0;
+
+ if (!cdxa_parse_type) {
+ static const GTypeInfo cdxa_parse_info = {
+ sizeof(GstCDXAParseClass),
+ NULL,
+ NULL,
+ (GClassInitFunc)gst_cdxa_parse_class_init,
+ NULL,
+ NULL,
+ sizeof(GstCDXAParse),
+ 0,
+ (GInstanceInitFunc)gst_cdxa_parse_init,
+ };
+ cdxa_parse_type = g_type_register_static(GST_TYPE_ELEMENT, "GstCDXAParse", &cdxa_parse_info, 0);
+ }
+ return cdxa_parse_type;
+}
+
+static void
+gst_cdxa_parse_class_init (GstCDXAParseClass *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_long ("bitrate","bitrate","bitrate",
+ G_MINLONG, G_MAXLONG, 0, G_PARAM_READABLE)); // CHECKME
+ g_object_class_install_property (G_OBJECT_CLASS(klass), ARG_MEDIA_TIME,
+ g_param_spec_long ("media_time","media_time","media_time",
+ G_MINLONG, G_MAXLONG, 0, G_PARAM_READABLE)); // CHECKME
+ g_object_class_install_property (G_OBJECT_CLASS(klass), ARG_CURRENT_TIME,
+ g_param_spec_long ("current_time","current_time","current_time",
+ G_MINLONG, G_MAXLONG, 0, G_PARAM_READABLE)); // CHECKME
+
+ parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
+
+ gstelement_class->change_state = gst_cdxa_parse_change_state;
+}
+
+static void
+gst_cdxa_parse_init (GstCDXAParse *cdxa_parse)
+{
+ guint i;
+
+ GST_FLAG_SET (cdxa_parse, GST_ELEMENT_EVENT_AWARE);
+
+ cdxa_parse->sinkpad = gst_pad_new_from_template (
+ GST_PADTEMPLATE_GET (sink_templ), "sink");
+ gst_element_add_pad (GST_ELEMENT (cdxa_parse), cdxa_parse->sinkpad);
+
+ cdxa_parse->srcpad = gst_pad_new_from_template (
+ GST_PADTEMPLATE_GET (src_templ), "src");
+ gst_element_add_pad (GST_ELEMENT (cdxa_parse), cdxa_parse->srcpad);
+
+ gst_element_set_loop_function (GST_ELEMENT (cdxa_parse), gst_cdxa_parse_loop);
+
+}
+
+static GstCaps*
+cdxa_typefind (GstBuffer *buf,
+ gpointer private)
+{
+ gchar *data = GST_BUFFER_DATA (buf);
+ GstCaps *new;
+
+ GST_DEBUG (0,"cdxa_parse: typefind\n");
+
+ if (GUINT32_FROM_LE (((guint32 *)data)[0]) != GST_RIFF_TAG_RIFF)
+ return NULL;
+ if (GUINT32_FROM_LE (((guint32 *)data)[2]) != GST_RIFF_RIFF_CDXA)
+ return NULL;
+
+ new = GST_CAPS_NEW ("cdxa_typefind",
+ "video/avi",
+ "RIFF", GST_PROPS_STRING ("CDXA"));
+
+ return new;
+}
+
+static gboolean
+gst_cdxa_parse_handle_event (GstCDXAParse *cdxa_parse)
+{
+ guint32 remaining;
+ GstEvent *event;
+ GstEventType type;
+
+ gst_bytestream_get_status (cdxa_parse->bs, &remaining, &event);
+
+ type = event? GST_EVENT_TYPE (event) : GST_EVENT_UNKNOWN;
+
+ switch (type) {
+ case GST_EVENT_EOS:
+ gst_pad_event_default (cdxa_parse->sinkpad, event);
+ break;
+ case GST_EVENT_SEEK:
+ g_warning ("seek event\n");
+ break;
+ case GST_EVENT_FLUSH:
+ g_warning ("flush event\n");
+ break;
+ case GST_EVENT_DISCONTINUOUS:
+ g_warning ("discont event\n");
+ break;
+ default:
+ g_warning ("unhandled event %d\n", type);
+ break;
+ }
+
+ return TRUE;
+}
+
+/*
+
+CDXA starts with the following header:
+
+! RIFF:4 ! size:4 ! "CDXA" ! "fmt " ! size:4 ! (size+1)&~1 bytes of crap !
+! "data" ! data_size:4 ! (data_size/2352) sectors...
+
+*/
+
+typedef struct
+{
+ gchar RIFF_tag[4];
+ guint32 riff_size;
+ gchar CDXA_tag[4];
+ gchar fmt_tag[4];
+ guint32 fmt_size;
+} CDXAParseHeader;
+
+/*
+A sectors is 2352 bytes long and is composed of:
+
+! sync ! header ! subheader ! data ... ! edc !
+! 12 bytes ! 4 bytes ! 8 bytes ! 2324 bytes ! 4 bytes !
+!-------------------------------------------------------!
+
+We parse the data out of it and send it to the srcpad.
+*/
+
+static void
+gst_cdxa_parse_loop (GstElement *element)
+{
+ GstCDXAParse *cdxa_parse;
+ CDXAParseHeader *header;
+
+ g_return_if_fail (element != NULL);
+ g_return_if_fail (GST_IS_CDXA_PARSE (element));
+
+ cdxa_parse = GST_CDXA_PARSE (element);
+
+ if (cdxa_parse->state == CDXA_PARSE_HEADER) {
+ guint32 fmt_size;
+ guint8 *buf;
+
+ header = (CDXAParseHeader *) gst_bytestream_peek_bytes (cdxa_parse->bs, 20);
+ if (!header)
+ return;
+
+ cdxa_parse->riff_size = GUINT32_FROM_LE (header->riff_size);
+ fmt_size = (GUINT32_FROM_LE (header->fmt_size) + 1)&~1;
+
+ /* flush the header + fmt_size bytes + 4 bytes "data" */
+ if (!gst_bytestream_flush (cdxa_parse->bs, 20 + fmt_size + 4))
+ return;
+
+ /* get the data size */
+ buf = gst_bytestream_peek_bytes (cdxa_parse->bs, 4);
+ if (!buf)
+ return;
+ cdxa_parse->data_size = GUINT32_FROM_LE (*((guint32 *)buf));
+
+ /* flush the data size */
+ if (!gst_bytestream_flush (cdxa_parse->bs, 4))
+ return;
+
+ if (cdxa_parse->data_size % CDXA_SECTOR_SIZE)
+ g_warning ("cdxa_parse: size not multiple of %d bytes", CDXA_SECTOR_SIZE);
+
+ cdxa_parse->sectors = cdxa_parse->data_size / CDXA_SECTOR_SIZE;
+
+ cdxa_parse->state = CDXA_PARSE_DATA;
+ }
+ else {
+ GstBuffer *buf;
+ GstBuffer *outbuf;
+
+ buf = gst_bytestream_read (cdxa_parse->bs, CDXA_SECTOR_SIZE);
+ if (!buf) {
+ gst_cdxa_parse_handle_event (cdxa_parse);
+ return;
+ }
+
+ outbuf = gst_buffer_create_sub (buf, 24, CDXA_DATA_SIZE);
+ gst_buffer_unref (buf);
+
+ gst_pad_push (cdxa_parse->srcpad, outbuf);
+ }
+}
+
+static GstElementStateReturn
+gst_cdxa_parse_change_state (GstElement *element)
+{
+ GstCDXAParse *cdxa_parse = GST_CDXA_PARSE (element);
+
+ switch (GST_STATE_TRANSITION (element)) {
+ case GST_STATE_NULL_TO_READY:
+ break;
+ case GST_STATE_READY_TO_PAUSED:
+ cdxa_parse->state = CDXA_PARSE_HEADER;
+ cdxa_parse->bs = gst_bytestream_new (cdxa_parse->sinkpad);
+ break;
+ case GST_STATE_PAUSED_TO_PLAYING:
+ break;
+ case GST_STATE_PLAYING_TO_PAUSED:
+ break;
+ case GST_STATE_PAUSED_TO_READY:
+ gst_bytestream_destroy (cdxa_parse->bs);
+ break;
+ case GST_STATE_READY_TO_NULL:
+ break;
+ default:
+ break;
+ }
+
+ parent_class->change_state (element);
+
+ return GST_STATE_SUCCESS;
+}
+
+static gboolean
+plugin_init (GModule *module, GstPlugin *plugin)
+{
+ GstElementFactory *factory;
+ GstTypeFactory *type;
+
+ /* this filter needs the riff parser */
+ if (!gst_library_load ("gstbytestream")) {
+ gst_info("cdxaparse: could not load support library: 'gstbytestream'\n");
+ return FALSE;
+ }
+
+ /* create an elementfactory for the cdxa_parse element */
+ factory = gst_elementfactory_new ("cdxaparse", GST_TYPE_CDXA_PARSE,
+ &gst_cdxa_parse_details);
+ g_return_val_if_fail (factory != NULL, FALSE);
+
+ gst_elementfactory_add_padtemplate (factory, GST_PADTEMPLATE_GET (src_templ));
+ gst_elementfactory_add_padtemplate (factory, GST_PADTEMPLATE_GET (sink_templ));
+
+ type = gst_typefactory_new (&cdxadefinition);
+ gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (type));
+
+ gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
+
+ return TRUE;
+}
+
+GstPluginDesc plugin_desc = {
+ GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "cdxaparse",
+ plugin_init
+};
+
--- /dev/null
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ * <2002> Wim Tayans <wim.taymans@chello.be>
+ *
+ * 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_CDXA_PARSE_H__
+#define __GST_CDXA_PARSE_H__
+
+#include <config.h>
+#include <gst/gst.h>
+#include <gst/bytestream/bytestream.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+#define GST_TYPE_CDXA_PARSE \
+ (gst_cdxa_parse_get_type())
+#define GST_CDXA_PARSE(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CDXA_PARSE,GstCDXAParse))
+#define GST_CDXA_PARSE_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CDXA_PARSE,GstCDXAParse))
+#define GST_IS_CDXA_PARSE(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CDXA_PARSE))
+#define GST_IS_CDXA_PARSE_CLASS(obj) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CDXA_PARSE))
+
+#define CDXA_SECTOR_SIZE 2352
+#define CDXA_DATA_SIZE 2324
+
+typedef enum
+{
+ CDXA_PARSE_HEADER,
+ CDXA_PARSE_DATA,
+} GstCDXAParseState;
+
+typedef struct _GstCDXAParse GstCDXAParse;
+typedef struct _GstCDXAParseClass GstCDXAParseClass;
+
+struct _GstCDXAParse {
+ GstElement element;
+
+ /* pads */
+ GstPad *sinkpad, *srcpad;
+
+ GstByteStream *bs;
+
+ GstCDXAParseState state;
+
+ guint32 riff_size;
+ guint32 data_size;
+ guint32 sectors;
+};
+
+struct _GstCDXAParseClass {
+ GstElementClass parent_class;
+};
+
+GType gst_cdxa_parse_get_type (void);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __GST_CDXA_PARSE_H__ */
projects / platform / upstream / gst-plugins-good.git / commitdiff