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-rw-r--r--gst/cdxaparse/Makefile.am11
-rw-r--r--gst/cdxaparse/gstcdxaparse.c132
-rw-r--r--gst/cdxaparse/gstcdxaparse.h16
-rw-r--r--gst/cdxaparse/gstcdxastrip.c411
-rw-r--r--gst/cdxaparse/gstcdxastrip.h67
-rw-r--r--gst/cdxaparse/gstvcdparse.c411
-rw-r--r--gst/cdxaparse/gstvcdparse.h67
7 files changed, 1013 insertions, 102 deletions
diff --git a/gst/cdxaparse/Makefile.am b/gst/cdxaparse/Makefile.am
index 411579cc..ef9315b7 100644
--- a/gst/cdxaparse/Makefile.am
+++ b/gst/cdxaparse/Makefile.am
@@ -1,11 +1,12 @@
+plugin_LTLIBRARIES = libgstcdxaparse.la
-plugin_LTLIBRARIES = \
- libgstcdxaparse.la
-
-libgstcdxaparse_la_SOURCES = gstcdxaparse.c
+libgstcdxaparse_la_SOURCES = \
+ gstcdxaparse.c \
+ gstcdxastrip.c
noinst_HEADERS = \
- gstcdxaparse.h
+ gstcdxaparse.h \
+ gstcdxastrip.h
libgstcdxaparse_la_CFLAGS = $(GST_CFLAGS)
libgstcdxaparse_la_LIBADD =
diff --git a/gst/cdxaparse/gstcdxaparse.c b/gst/cdxaparse/gstcdxaparse.c
index 472f6482..ef9f521f 100644
--- a/gst/cdxaparse/gstcdxaparse.c
+++ b/gst/cdxaparse/gstcdxaparse.c
@@ -18,13 +18,13 @@
* Boston, MA 02111-1307, USA.
*/
-
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "gstcdxaparse.h"
+#include "gstcdxastrip.h"
#include "gst/riff/riff-ids.h"
#include "gst/riff/riff-media.h"
@@ -32,9 +32,8 @@ static void gst_cdxaparse_base_init (gpointer g_class);
static void gst_cdxaparse_class_init (GstCDXAParseClass * klass);
static void gst_cdxaparse_init (GstCDXAParse * cdxaparse);
-static GstElementStateReturn gst_cdxaparse_change_state (GstElement * element);
-
static void gst_cdxaparse_loop (GstElement * element);
+static GstElementStateReturn gst_cdxaparse_change_state (GstElement * element);
static GstStaticPadTemplate sink_template_factory =
GST_STATIC_PAD_TEMPLATE ("sink",
@@ -50,20 +49,7 @@ GST_STATIC_PAD_TEMPLATE ("src",
GST_STATIC_CAPS ("video/mpeg, " "systemstream = (boolean) TRUE")
);
-/* CDXAParse signals and args */
-enum
-{
- /* FILL ME */
- LAST_SIGNAL
-};
-
-enum
-{
- ARG_0,
- /* FILL ME */
-};
-
-static GstElementClass *parent_class = NULL;
+static GstRiffReadClass *parent_class = NULL;
GType
gst_cdxaparse_get_type (void)
@@ -87,6 +73,7 @@ gst_cdxaparse_get_type (void)
g_type_register_static (GST_TYPE_RIFF_READ, "GstCDXAParse",
&cdxaparse_info, 0);
}
+
return cdxaparse_type;
}
@@ -113,11 +100,7 @@ gst_cdxaparse_base_init (gpointer g_class)
static void
gst_cdxaparse_class_init (GstCDXAParseClass * klass)
{
- GstElementClass *gstelement_class;
- GObjectClass *object_class;
-
- gstelement_class = (GstElementClass *) klass;
- object_class = (GObjectClass *) klass;
+ GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
parent_class = g_type_class_ref (GST_TYPE_RIFF_READ);
@@ -127,23 +110,23 @@ gst_cdxaparse_class_init (GstCDXAParseClass * klass)
static void
gst_cdxaparse_init (GstCDXAParse * cdxaparse)
{
- /* sink */
+ /* FIXME: this element needs to be event aware */
+
cdxaparse->sinkpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&sink_template_factory), "sink");
- gst_element_add_pad (GST_ELEMENT (cdxaparse), cdxaparse->sinkpad);
GST_RIFF_READ (cdxaparse)->sinkpad = cdxaparse->sinkpad;
-
-
- gst_element_set_loop_function (GST_ELEMENT (cdxaparse), gst_cdxaparse_loop);
-
- cdxaparse->state = GST_CDXAPARSE_START;
+ gst_element_add_pad (GST_ELEMENT (cdxaparse), cdxaparse->sinkpad);
cdxaparse->srcpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&src_template_factory), "src");
+ /* FIXME: event, query */
gst_element_add_pad (GST_ELEMENT (cdxaparse), cdxaparse->srcpad);
+ gst_element_set_loop_function (GST_ELEMENT (cdxaparse), gst_cdxaparse_loop);
+
+ cdxaparse->state = GST_CDXAPARSE_START;
cdxaparse->seek_pending = FALSE;
cdxaparse->seek_offset = 0;
}
@@ -211,23 +194,6 @@ gst_cdxaparse_other (GstCDXAParse * cdxa)
return TRUE;
}
-/*
-
-A sector 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.
-
-sync : 00 FF FF FF FF FF FF FF FF FF FF 00
-header : hour minute second mode
-sub-header : track channel sub_mode coding repeat (4 bytes)
-edc : checksum
-
-*/
-
static void
gst_cdxaparse_loop (GstElement * element)
{
@@ -235,32 +201,49 @@ gst_cdxaparse_loop (GstElement * element)
GstRiffRead *riff = GST_RIFF_READ (cdxa);
if (cdxa->state == GST_CDXAPARSE_DATA) {
-
if (cdxa->dataleft > 0) {
+ gint sync;
guint32 got_bytes, desired;
GstBuffer *buf = NULL;
GstBuffer *outbuf = NULL;
- desired = GST_CDXA_SECTOR_SIZE;
+ /* resync */
+ desired = cdxa->dataleft;
+ if (desired > 1024)
+ desired = 1024;
+ if (gst_bytestream_peek (riff->bs, &buf, desired) != desired) {
+ GST_ELEMENT_ERROR (element, RESOURCE, READ, (NULL), (NULL));
+ return;
+ }
+ sync = gst_cdxastrip_sync (buf);
+ if (sync == -1) {
+ gst_bytestream_flush_fast (riff->bs, desired);
+ cdxa->dataleft -= desired;
+ return;
+ }
+ if (sync > 0) {
+ if (cdxa->dataleft < sync)
+ sync = cdxa->dataleft;
+ gst_bytestream_flush_fast (riff->bs, sync);
+ cdxa->dataleft -= sync;
+ if (cdxa->dataleft == 0)
+ return;
+ }
+ /* get data */
+ desired = GST_CDXA_SECTOR_SIZE;
if (!(buf = gst_riff_read_element_data (riff, desired, &got_bytes)))
return;
/* Skip CDXA headers, only keep data */
- outbuf =
- gst_buffer_create_sub (buf, GST_CDXA_HEADER_SIZE, GST_CDXA_DATA_SIZE);
-
- gst_buffer_unref (buf);
+ outbuf = gst_cdxastrip_strip (buf);
gst_pad_push (cdxa->srcpad, GST_DATA (outbuf));
- cdxa->byteoffset += got_bytes;
- if (got_bytes < cdxa->dataleft) {
+ if (got_bytes < cdxa->dataleft)
cdxa->dataleft -= got_bytes;
- return;
- } else {
+ else
cdxa->dataleft = 0;
- cdxa->state = GST_CDXAPARSE_OTHER;
- }
+ return;
} else {
cdxa->state = GST_CDXAPARSE_OTHER;
}
@@ -268,30 +251,23 @@ gst_cdxaparse_loop (GstElement * element)
switch (cdxa->state) {
case GST_CDXAPARSE_START:
- if (!gst_cdxaparse_stream_init (cdxa)) {
+ if (!gst_cdxaparse_stream_init (cdxa))
return;
- }
-
cdxa->state = GST_CDXAPARSE_FMT;
/* fall-through */
case GST_CDXAPARSE_FMT:
- if (!gst_cdxaparse_fmt (cdxa)) {
+ if (!gst_cdxaparse_fmt (cdxa))
return;
- }
-
cdxa->state = GST_CDXAPARSE_OTHER;
/* fall-through */
case GST_CDXAPARSE_OTHER:
- if (!gst_cdxaparse_other (cdxa)) {
+ if (!gst_cdxaparse_other (cdxa))
return;
- }
-
break;
case GST_CDXAPARSE_DATA:
-
default:
g_assert_not_reached ();
}
@@ -303,27 +279,15 @@ gst_cdxaparse_change_state (GstElement * element)
GstCDXAParse *cdxa = GST_CDXAPARSE (element);
switch (GST_STATE_TRANSITION (element)) {
- case GST_STATE_NULL_TO_READY:
- break;
-
case GST_STATE_READY_TO_PAUSED:
cdxa->state = GST_CDXAPARSE_START;
break;
-
- case GST_STATE_PAUSED_TO_PLAYING:
- break;
-
- case GST_STATE_PLAYING_TO_PAUSED:
- break;
-
case GST_STATE_PAUSED_TO_READY:
cdxa->state = GST_CDXAPARSE_START;
-
cdxa->seek_pending = FALSE;
cdxa->seek_offset = 0;
break;
-
- case GST_STATE_READY_TO_NULL:
+ default:
break;
}
@@ -336,12 +300,14 @@ gst_cdxaparse_change_state (GstElement * element)
static gboolean
plugin_init (GstPlugin * plugin)
{
- if (!gst_library_load ("riff")) {
+ if (!gst_library_load ("riff") || !gst_library_load ("gstbytestream")) {
return FALSE;
}
return gst_element_register (plugin, "cdxaparse", GST_RANK_PRIMARY,
- GST_TYPE_CDXAPARSE);
+ GST_TYPE_CDXAPARSE) &&
+ gst_element_register (plugin, "cdxastrip",
+ GST_RANK_PRIMARY, GST_TYPE_CDXASTRIP);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
diff --git a/gst/cdxaparse/gstcdxaparse.h b/gst/cdxaparse/gstcdxaparse.h
index 1ad618a1..0177b94b 100644
--- a/gst/cdxaparse/gstcdxaparse.h
+++ b/gst/cdxaparse/gstcdxaparse.h
@@ -18,7 +18,6 @@
* Boston, MA 02111-1307, USA.
*/
-
#ifndef __GST_CDXAPARSE_H__
#define __GST_CDXAPARSE_H__
@@ -26,9 +25,7 @@
#include "gst/riff/riff-ids.h"
#include "gst/riff/riff-read.h"
-#ifdef __cplusplus
-extern "C" {
-#endif /* __cplusplus */
+G_BEGIN_DECLS
#define GST_TYPE_CDXAPARSE \
(gst_cdxaparse_get_type())
@@ -41,10 +38,6 @@ extern "C" {
#define GST_IS_CDXAPARSE_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CDXAPARSE))
-#define GST_CDXA_SECTOR_SIZE 2352
-#define GST_CDXA_DATA_SIZE 2324
-#define GST_CDXA_HEADER_SIZE 24
-
typedef enum {
GST_CDXAPARSE_START,
GST_CDXAPARSE_FMT,
@@ -65,7 +58,6 @@ struct _GstCDXAParse {
GstCDXAParseState state;
guint64 dataleft, datasize, datastart;
- int byteoffset;
gboolean seek_pending;
guint64 seek_offset;
@@ -77,10 +69,6 @@ struct _GstCDXAParseClass {
GType gst_cdxaparse_get_type (void);
-#ifdef __cplusplus
-}
-#endif /* __cplusplus */
-
+G_END_DECLS
#endif /* __GST_CDXAPARSE_H__ */
-
diff --git a/gst/cdxaparse/gstcdxastrip.c b/gst/cdxaparse/gstcdxastrip.c
new file mode 100644
index 00000000..312c3028
--- /dev/null
+++ b/gst/cdxaparse/gstcdxastrip.c
@@ -0,0 +1,411 @@
+/* GStreamer CDXA sync strippper
+ * Copyright (C) 2004 Ronald Bultje <rbultje@ronald.bitfreak.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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <string.h>
+#include <gst/gst.h>
+#include "gstcdxastrip.h"
+
+static void gst_cdxastrip_base_init (GstCDXAStripClass * klass);
+static void gst_cdxastrip_class_init (GstCDXAStripClass * klass);
+static void gst_cdxastrip_init (GstCDXAStrip * cdxastrip);
+
+static const GstEventMask *gst_cdxastrip_get_event_mask (GstPad * pad);
+static gboolean gst_cdxastrip_handle_src_event (GstPad * pad, GstEvent * event);
+static const GstFormat *gst_cdxastrip_get_src_formats (GstPad * pad);
+static const GstQueryType *gst_cdxastrip_get_src_query_types (GstPad * pad);
+static gboolean gst_cdxastrip_handle_src_query (GstPad * pad,
+ GstQueryType type, GstFormat * format, gint64 * value);
+
+static void gst_cdxastrip_chain (GstPad * pad, GstData * data);
+static GstElementStateReturn gst_cdxastrip_change_state (GstElement * element);
+
+static GstStaticPadTemplate sink_template_factory =
+GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("video/x-vcd")
+ );
+
+static GstStaticPadTemplate src_template_factory =
+GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("video/mpeg, " "systemstream = (boolean) TRUE")
+ );
+
+static GstElementClass *parent_class = NULL;
+
+GType
+gst_cdxastrip_get_type (void)
+{
+ static GType cdxastrip_type = 0;
+
+ if (!cdxastrip_type) {
+ static const GTypeInfo cdxastrip_info = {
+ sizeof (GstCDXAStripClass),
+ (GBaseInitFunc) gst_cdxastrip_base_init,
+ NULL,
+ (GClassInitFunc) gst_cdxastrip_class_init,
+ NULL,
+ NULL,
+ sizeof (GstCDXAStrip),
+ 0,
+ (GInstanceInitFunc) gst_cdxastrip_init,
+ };
+
+ cdxastrip_type =
+ g_type_register_static (GST_TYPE_ELEMENT, "GstCDXAStrip",
+ &cdxastrip_info, 0);
+ }
+
+ return cdxastrip_type;
+}
+
+static void
+gst_cdxastrip_base_init (GstCDXAStripClass * klass)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+ static GstElementDetails gst_cdxastrip_details =
+ GST_ELEMENT_DETAILS ("vcd parser",
+ "Codec/Parser",
+ "Strip (S)VCD stream from its syncheaders",
+ "Ronald Bultje <rbultje@ronald.bitfreak.net>");
+
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&sink_template_factory));
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&src_template_factory));
+
+ gst_element_class_set_details (element_class, &gst_cdxastrip_details);
+}
+
+static void
+gst_cdxastrip_class_init (GstCDXAStripClass * klass)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+ parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
+
+ element_class->change_state = gst_cdxastrip_change_state;
+}
+
+static void
+gst_cdxastrip_init (GstCDXAStrip * cdxastrip)
+{
+ GST_FLAG_SET (cdxastrip, GST_ELEMENT_EVENT_AWARE);
+
+ cdxastrip->sinkpad =
+ gst_pad_new_from_template (gst_static_pad_template_get
+ (&sink_template_factory), "sink");
+ gst_pad_set_chain_function (cdxastrip->sinkpad, gst_cdxastrip_chain);
+ gst_element_add_pad (GST_ELEMENT (cdxastrip), cdxastrip->sinkpad);
+
+ cdxastrip->srcpad =
+ gst_pad_new_from_template (gst_static_pad_template_get
+ (&src_template_factory), "src");
+ gst_pad_set_formats_function (cdxastrip->srcpad,
+ gst_cdxastrip_get_src_formats);
+ gst_pad_set_event_mask_function (cdxastrip->srcpad,
+ gst_cdxastrip_get_event_mask);
+ gst_pad_set_event_function (cdxastrip->srcpad,
+ gst_cdxastrip_handle_src_event);
+ gst_pad_set_query_type_function (cdxastrip->srcpad,
+ gst_cdxastrip_get_src_query_types);
+ gst_pad_set_query_function (cdxastrip->srcpad,
+ gst_cdxastrip_handle_src_query);
+ gst_element_add_pad (GST_ELEMENT (cdxastrip), cdxastrip->srcpad);
+}
+
+/*
+ * Stuff.
+ */
+
+static const GstFormat *
+gst_cdxastrip_get_src_formats (GstPad * pad)
+{
+ static const GstFormat formats[] = {
+ GST_FORMAT_BYTES,
+ 0
+ };
+
+ return formats;
+}
+
+static const GstQueryType *
+gst_cdxastrip_get_src_query_types (GstPad * pad)
+{
+ static const GstQueryType types[] = {
+ GST_QUERY_TOTAL,
+ GST_QUERY_POSITION,
+ 0
+ };
+
+ return types;
+}
+
+static gboolean
+gst_cdxastrip_handle_src_query (GstPad * pad,
+ GstQueryType type, GstFormat * format, gint64 * value)
+{
+ GstCDXAStrip *cdxa = GST_CDXASTRIP (gst_pad_get_parent (pad));
+
+ if (!gst_pad_query (GST_PAD_PEER (cdxa->sinkpad), type, format, value))
+ return FALSE;
+
+ if (*format != GST_FORMAT_BYTES)
+ return TRUE;
+
+ switch (type) {
+ case GST_QUERY_TOTAL:
+ case GST_QUERY_POSITION:{
+ gint num, rest;
+
+ num = *value / GST_CDXA_SECTOR_SIZE;
+ rest = *value % GST_CDXA_SECTOR_SIZE;
+
+ *value = num * GST_CDXA_DATA_SIZE;
+ if (rest > GST_CDXA_HEADER_SIZE) {
+ if (rest >= GST_CDXA_HEADER_SIZE + GST_CDXA_DATA_SIZE)
+ *value += GST_CDXA_DATA_SIZE;
+ else
+ *value += rest - GST_CDXA_HEADER_SIZE;
+ }
+ break;
+ }
+ default:
+ break;
+ }
+
+ return TRUE;
+}
+
+static const GstEventMask *
+gst_cdxastrip_get_event_mask (GstPad * pad)
+{
+ static const GstEventMask masks[] = {
+ {GST_EVENT_SEEK, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_KEY_UNIT},
+ {0,}
+ };
+
+ return masks;
+}
+
+static gboolean
+gst_cdxastrip_handle_src_event (GstPad * pad, GstEvent * event)
+{
+ GstCDXAStrip *cdxa = GST_CDXASTRIP (gst_pad_get_parent (pad));
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_SEEK:
+ switch (GST_EVENT_SEEK_FORMAT (event)) {
+ case GST_FORMAT_BYTES:{
+ GstEvent *new;
+ gint64 off;
+ gint num, rest;
+
+ off = GST_EVENT_SEEK_OFFSET (event);
+ num = off / GST_CDXA_DATA_SIZE;
+ rest = off % GST_CDXA_DATA_SIZE;
+ off = num * GST_CDXA_SECTOR_SIZE;
+ if (rest > 0)
+ off += rest + GST_CDXA_HEADER_SIZE;
+ new = gst_event_new_seek (GST_EVENT_SEEK_TYPE (event), off);
+ gst_event_unref (event);
+ event = new;
+ }
+ default:
+ break;
+ }
+ break;
+ default:
+ break;
+ }
+
+ return gst_pad_send_event (GST_PAD_PEER (cdxa->sinkpad), event);
+}
+
+/*
+ * A sector is 2352 bytes long and is composed of:
+ *
+ * ! sync ! header ! subheader ! data ... ! edc !
+ * ! 12 bytes ! 4 bytes ! 8 bytes ! 2324 bytes ! 4 bytes !
+ * !-------------------------------------------------------!
+ *
+ * We strip the data out of it and send it to the srcpad.
+ *
+ * sync : 00 FF FF FF FF FF FF FF FF FF FF 00
+ * header : hour minute second mode
+ * sub-header : track channel sub_mode coding repeat (4 bytes)
+ * edc : checksum
+ */
+
+GstBuffer *
+gst_cdxastrip_strip (GstBuffer * buf)
+{
+ GstBuffer *sub;
+
+ g_assert (GST_BUFFER_SIZE (buf) >= GST_CDXA_SECTOR_SIZE);
+
+ /* Skip CDXA headers, only keep data.
+ * FIXME: check sync, resync, ... */
+ sub = gst_buffer_create_sub (buf, GST_CDXA_HEADER_SIZE, GST_CDXA_DATA_SIZE);
+ gst_buffer_unref (buf);
+
+ return sub;
+}
+
+/*
+ * -1 = no sync (discard buffer),
+ * otherwise offset indicates syncpoint in buffer.
+ */
+
+gint
+gst_cdxastrip_sync (GstBuffer * buf)
+{
+ guint size, off = 0;
+ guint8 *data;
+
+ for (size = GST_BUFFER_SIZE (buf), data = GST_BUFFER_DATA (buf);
+ size >= 12; size--, data++, off++) {
+ /* we could do a checksum check as well, but who cares... */
+ if (!memcmp (data, "\000\377\377\377\377\377\377\377\377\377\377\000", 12))
+ return off;
+ }
+
+ return -1;
+}
+
+/*
+ * Do stuff.
+ */
+
+static void
+gst_cdxastrip_handle_event (GstCDXAStrip * cdxa, GstEvent * event)
+{
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_DISCONTINUOUS:{
+ gint64 new_off, off;
+
+ if (gst_event_discont_get_value (event, GST_FORMAT_BYTES, &new_off)) {
+ GstEvent *new;
+ gint chunknum, rest;
+
+ chunknum = new_off / GST_CDXA_SECTOR_SIZE;
+ rest = new_off % GST_CDXA_SECTOR_SIZE;
+ off = chunknum * GST_CDXA_DATA_SIZE;
+ if (rest > GST_CDXA_HEADER_SIZE) {
+ if (rest >= GST_CDXA_HEADER_SIZE + GST_CDXA_DATA_SIZE)
+ off += GST_CDXA_DATA_SIZE;
+ else
+ off += rest - GST_CDXA_HEADER_SIZE;
+ }
+ new = gst_event_new_discontinuous (GST_EVENT_DISCONT_NEW_MEDIA (event),
+ GST_FORMAT_BYTES, new_off, GST_FORMAT_UNDEFINED);
+ gst_event_unref (event);
+ event = new;
+ }
+ gst_pad_event_default (cdxa->sinkpad, event);
+ break;
+ }
+ case GST_EVENT_FLUSH:
+ if (cdxa->cache) {
+ gst_buffer_unref (cdxa->cache);
+ cdxa->cache = NULL;
+ }
+ /* fall-through */
+ default:
+ gst_pad_event_default (cdxa->sinkpad, event);
+ break;
+ }
+}
+
+static void
+gst_cdxastrip_chain (GstPad * pad, GstData * data)
+{
+ GstCDXAStrip *cdxa = GST_CDXASTRIP (gst_pad_get_parent (pad));
+ GstBuffer *buf, *sub;
+ gint sync;
+
+ if (GST_IS_EVENT (data)) {
+ gst_cdxastrip_handle_event (cdxa, GST_EVENT (data));
+ return;
+ }
+
+ buf = GST_BUFFER (data);
+ if (cdxa->cache) {
+ buf = gst_buffer_join (cdxa->cache, buf);
+ }
+ cdxa->cache = NULL;
+
+ while (buf && GST_BUFFER_SIZE (buf) >= GST_CDXA_SECTOR_SIZE) {
+ /* sync */
+ sync = gst_cdxastrip_sync (buf);
+ if (sync < 0) {
+ gst_buffer_unref (buf);
+ return;
+ }
+ sub = gst_buffer_create_sub (buf, sync, GST_BUFFER_SIZE (buf) - sync);
+ gst_buffer_unref (buf);
+ buf = sub;
+ if (GST_BUFFER_SIZE (buf) < GST_CDXA_SECTOR_SIZE)
+ break;
+
+ /* one chunk */
+ sub = gst_cdxastrip_strip (gst_buffer_ref (buf));
+ gst_pad_push (cdxa->srcpad, GST_DATA (sub));
+
+ /* cache */
+ if (GST_BUFFER_SIZE (buf) != GST_CDXA_SECTOR_SIZE) {
+ sub = gst_buffer_create_sub (buf, GST_CDXA_SECTOR_SIZE,
+ GST_BUFFER_SIZE (buf) - GST_CDXA_SECTOR_SIZE);
+ } else {
+ sub = NULL;
+ }
+ gst_buffer_unref (buf);
+ buf = sub;
+ }
+
+ cdxa->cache = buf;
+}
+
+static GstElementStateReturn
+gst_cdxastrip_change_state (GstElement * element)
+{
+ GstCDXAStrip *cdxa = GST_CDXASTRIP (element);
+
+ switch (GST_STATE_TRANSITION (element)) {
+ case GST_STATE_PAUSED_TO_READY:
+ if (cdxa->cache) {
+ gst_buffer_unref (cdxa->cache);
+ cdxa->cache = NULL;
+ }
+ break;
+ default:
+ break;
+ }
+
+ if (parent_class->change_state)
+ return parent_class->change_state (element);
+
+ return GST_STATE_SUCCESS;
+}
diff --git a/gst/cdxaparse/gstcdxastrip.h b/gst/cdxaparse/gstcdxastrip.h
new file mode 100644
index 00000000..59cf4ab6
--- /dev/null
+++ b/gst/cdxaparse/gstcdxastrip.h
@@ -0,0 +1,67 @@
+/* GStreamer CDXA sync strippper
+ * Copyright (C) 2004 Ronald Bultje <rbultje@ronald.bitfreak.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_CDXASTRIP_H__
+#define __GST_CDXASTRIP_H__
+
+#include <gst/gst.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_CDXASTRIP \
+ (gst_cdxastrip_get_type())
+#define GST_CDXASTRIP(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CDXASTRIP,GstCDXAStrip))
+#define GST_CDXASTRIP_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CDXASTRIP,GstCDXAStrip))
+#define GST_IS_CDXASTRIP(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CDXASTRIP))
+#define GST_IS_CDXASTRIP_CLASS(obj) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CDXASTRIP))
+
+#define GST_CDXA_SECTOR_SIZE 2352
+#define GST_CDXA_DATA_SIZE 2324
+#define GST_CDXA_HEADER_SIZE 24
+
+typedef struct _GstCDXAStrip GstCDXAStrip;
+typedef struct _GstCDXAStripClass GstCDXAStripClass;
+
+struct _GstCDXAStrip {
+ GstElement parent;
+
+ /* pads */
+ GstPad *sinkpad, *srcpad;
+ GstBuffer *cache;
+};
+
+struct _GstCDXAStripClass {
+ GstElementClass parent_class;
+};
+
+GType gst_cdxastrip_get_type (void);
+
+/*
+ * Also useful for CDXAparse.
+ */
+GstBuffer * gst_cdxastrip_strip (GstBuffer * buf);
+gint gst_cdxastrip_sync (GstBuffer * buf);
+
+G_END_DECLS
+
+#endif /* __GST_CDXASTRIP_H__ */
diff --git a/gst/cdxaparse/gstvcdparse.c b/gst/cdxaparse/gstvcdparse.c
new file mode 100644
index 00000000..312c3028
--- /dev/null
+++ b/gst/cdxaparse/gstvcdparse.c
@@ -0,0 +1,411 @@
+/* GStreamer CDXA sync strippper
+ * Copyright (C) 2004 Ronald Bultje <rbultje@ronald.bitfreak.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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <string.h>
+#include <gst/gst.h>
+#include "gstcdxastrip.h"
+
+static void gst_cdxastrip_base_init (GstCDXAStripClass * klass);
+static void gst_cdxastrip_class_init (GstCDXAStripClass * klass);
+static void gst_cdxastrip_init (GstCDXAStrip * cdxastrip);
+
+static const GstEventMask *gst_cdxastrip_get_event_mask (GstPad * pad);
+static gboolean gst_cdxastrip_handle_src_event (GstPad * pad, GstEvent * event);
+static const GstFormat *gst_cdxastrip_get_src_formats (GstPad * pad);
+static const GstQueryType *gst_cdxastrip_get_src_query_types (GstPad * pad);
+static gboolean gst_cdxastrip_handle_src_query (GstPad * pad,
+ GstQueryType type, GstFormat * format, gint64 * value);
+
+static void gst_cdxastrip_chain (GstPad * pad, GstData * data);
+static GstElementStateReturn gst_cdxastrip_change_state (GstElement * element);
+
+static GstStaticPadTemplate sink_template_factory =
+GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("video/x-vcd")
+ );
+
+static GstStaticPadTemplate src_template_factory =
+GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("video/mpeg, " "systemstream = (boolean) TRUE")
+ );
+
+static GstElementClass *parent_class = NULL;
+
+GType
+gst_cdxastrip_get_type (void)
+{
+ static GType cdxastrip_type = 0;
+
+ if (!cdxastrip_type) {
+ static const GTypeInfo cdxastrip_info = {
+ sizeof (GstCDXAStripClass),
+ (GBaseInitFunc) gst_cdxastrip_base_init,
+ NULL,
+ (GClassInitFunc) gst_cdxastrip_class_init,
+ NULL,
+ NULL,
+ sizeof (GstCDXAStrip),
+ 0,
+ (GInstanceInitFunc) gst_cdxastrip_init,
+ };
+
+ cdxastrip_type =
+ g_type_register_static (GST_TYPE_ELEMENT, "GstCDXAStrip",
+ &cdxastrip_info, 0);
+ }
+
+ return cdxastrip_type;
+}
+
+static void
+gst_cdxastrip_base_init (GstCDXAStripClass * klass)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+ static GstElementDetails gst_cdxastrip_details =
+ GST_ELEMENT_DETAILS ("vcd parser",
+ "Codec/Parser",
+ "Strip (S)VCD stream from its syncheaders",
+ "Ronald Bultje <rbultje@ronald.bitfreak.net>");
+
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&sink_template_factory));
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&src_template_factory));
+
+ gst_element_class_set_details (element_class, &gst_cdxastrip_details);
+}
+
+static void
+gst_cdxastrip_class_init (GstCDXAStripClass * klass)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+ parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
+
+ element_class->change_state = gst_cdxastrip_change_state;
+}
+
+static void
+gst_cdxastrip_init (GstCDXAStrip * cdxastrip)
+{
+ GST_FLAG_SET (cdxastrip, GST_ELEMENT_EVENT_AWARE);
+
+ cdxastrip->sinkpad =
+ gst_pad_new_from_template (gst_static_pad_template_get
+ (&sink_template_factory), "sink");
+ gst_pad_set_chain_function (cdxastrip->sinkpad, gst_cdxastrip_chain);
+ gst_element_add_pad (GST_ELEMENT (cdxastrip), cdxastrip->sinkpad);
+
+ cdxastrip->srcpad =
+ gst_pad_new_from_template (gst_static_pad_template_get
+ (&src_template_factory), "src");
+ gst_pad_set_formats_function (cdxastrip->srcpad,
+ gst_cdxastrip_get_src_formats);
+ gst_pad_set_event_mask_function (cdxastrip->srcpad,
+ gst_cdxastrip_get_event_mask);
+ gst_pad_set_event_function (cdxastrip->srcpad,
+ gst_cdxastrip_handle_src_event);
+ gst_pad_set_query_type_function (cdxastrip->srcpad,
+ gst_cdxastrip_get_src_query_types);
+ gst_pad_set_query_function (cdxastrip->srcpad,
+ gst_cdxastrip_handle_src_query);
+ gst_element_add_pad (GST_ELEMENT (cdxastrip), cdxastrip->srcpad);
+}
+
+/*
+ * Stuff.
+ */
+
+static const GstFormat *
+gst_cdxastrip_get_src_formats (GstPad * pad)
+{
+ static const GstFormat formats[] = {
+ GST_FORMAT_BYTES,
+ 0
+ };
+
+ return formats;
+}
+
+static const GstQueryType *
+gst_cdxastrip_get_src_query_types (GstPad * pad)
+{
+ static const GstQueryType types[] = {
+ GST_QUERY_TOTAL,
+ GST_QUERY_POSITION,
+ 0
+ };
+
+ return types;
+}
+
+static gboolean
+gst_cdxastrip_handle_src_query (GstPad * pad,
+ GstQueryType type, GstFormat * format, gint64 * value)
+{
+ GstCDXAStrip *cdxa = GST_CDXASTRIP (gst_pad_get_parent (pad));
+
+ if (!gst_pad_query (GST_PAD_PEER (cdxa->sinkpad), type, format, value))
+ return FALSE;
+
+ if (*format != GST_FORMAT_BYTES)
+ return TRUE;
+
+ switch (type) {
+ case GST_QUERY_TOTAL:
+ case GST_QUERY_POSITION:{
+ gint num, rest;
+
+ num = *value / GST_CDXA_SECTOR_SIZE;
+ rest = *value % GST_CDXA_SECTOR_SIZE;
+
+ *value = num * GST_CDXA_DATA_SIZE;
+ if (rest > GST_CDXA_HEADER_SIZE) {
+ if (rest >= GST_CDXA_HEADER_SIZE + GST_CDXA_DATA_SIZE)
+ *value += GST_CDXA_DATA_SIZE;
+ else
+ *value += rest - GST_CDXA_HEADER_SIZE;
+ }
+ break;
+ }
+ default:
+ break;
+ }
+
+ return TRUE;
+}
+
+static const GstEventMask *
+gst_cdxastrip_get_event_mask (GstPad * pad)
+{
+ static const GstEventMask masks[] = {
+ {GST_EVENT_SEEK, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_KEY_UNIT},
+ {0,}
+ };
+
+ return masks;
+}
+
+static gboolean
+gst_cdxastrip_handle_src_event (GstPad * pad, GstEvent * event)
+{
+ GstCDXAStrip *cdxa = GST_CDXASTRIP (gst_pad_get_parent (pad));
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_SEEK:
+ switch (GST_EVENT_SEEK_FORMAT (event)) {
+ case GST_FORMAT_BYTES:{
+ GstEvent *new;
+ gint64 off;
+ gint num, rest;
+
+ off = GST_EVENT_SEEK_OFFSET (event);
+ num = off / GST_CDXA_DATA_SIZE;
+ rest = off % GST_CDXA_DATA_SIZE;
+ off = num * GST_CDXA_SECTOR_SIZE;
+ if (rest > 0)
+ off += rest + GST_CDXA_HEADER_SIZE;
+ new = gst_event_new_seek (GST_EVENT_SEEK_TYPE (event), off);
+ gst_event_unref (event);
+ event = new;
+ }
+ default:
+ break;
+ }
+ break;
+ default:
+ break;
+ }
+
+ return gst_pad_send_event (GST_PAD_PEER (cdxa->sinkpad), event);
+}
+
+/*
+ * A sector is 2352 bytes long and is composed of:
+ *
+ * ! sync ! header ! subheader ! data ... ! edc !
+ * ! 12 bytes ! 4 bytes ! 8 bytes ! 2324 bytes ! 4 bytes !
+ * !-------------------------------------------------------!
+ *
+ * We strip the data out of it and send it to the srcpad.
+ *
+ * sync : 00 FF FF FF FF FF FF FF FF FF FF 00
+ * header : hour minute second mode
+ * sub-header : track channel sub_mode coding repeat (4 bytes)
+ * edc : checksum
+ */
+
+GstBuffer *
+gst_cdxastrip_strip (GstBuffer * buf)
+{
+ GstBuffer *sub;
+
+ g_assert (GST_BUFFER_SIZE (buf) >= GST_CDXA_SECTOR_SIZE);
+
+ /* Skip CDXA headers, only keep data.
+ * FIXME: check sync, resync, ... */
+ sub = gst_buffer_create_sub (buf, GST_CDXA_HEADER_SIZE, GST_CDXA_DATA_SIZE);
+ gst_buffer_unref (buf);
+
+ return sub;
+}
+
+/*
+ * -1 = no sync (discard buffer),
+ * otherwise offset indicates syncpoint in buffer.
+ */
+
+gint
+gst_cdxastrip_sync (GstBuffer * buf)
+{
+ guint size, off = 0;
+ guint8 *data;
+
+ for (size = GST_BUFFER_SIZE (buf), data = GST_BUFFER_DATA (buf);
+ size >= 12; size--, data++, off++) {
+ /* we could do a checksum check as well, but who cares... */
+ if (!memcmp (data, "\000\377\377\377\377\377\377\377\377\377\377\000", 12))
+ return off;
+ }
+
+ return -1;
+}
+
+/*
+ * Do stuff.
+ */
+
+static void
+gst_cdxastrip_handle_event (GstCDXAStrip * cdxa, GstEvent * event)
+{
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_DISCONTINUOUS:{
+ gint64 new_off, off;
+
+ if (gst_event_discont_get_value (event, GST_FORMAT_BYTES, &new_off)) {
+ GstEvent *new;
+ gint chunknum, rest;
+
+ chunknum = new_off / GST_CDXA_SECTOR_SIZE;
+ rest = new_off % GST_CDXA_SECTOR_SIZE;
+ off = chunknum * GST_CDXA_DATA_SIZE;
+ if (rest > GST_CDXA_HEADER_SIZE) {
+ if (rest >= GST_CDXA_HEADER_SIZE + GST_CDXA_DATA_SIZE)
+ off += GST_CDXA_DATA_SIZE;
+ else
+ off += rest - GST_CDXA_HEADER_SIZE;
+ }
+ new = gst_event_new_discontinuous (GST_EVENT_DISCONT_NEW_MEDIA (event),
+ GST_FORMAT_BYTES, new_off, GST_FORMAT_UNDEFINED);
+ gst_event_unref (event);
+ event = new;
+ }
+ gst_pad_event_default (cdxa->sinkpad, event);
+ break;
+ }
+ case GST_EVENT_FLUSH:
+ if (cdxa->cache) {
+ gst_buffer_unref (cdxa->cache);
+ cdxa->cache = NULL;
+ }
+ /* fall-through */
+ default:
+ gst_pad_event_default (cdxa->sinkpad, event);
+ break;
+ }
+}
+
+static void
+gst_cdxastrip_chain (GstPad * pad, GstData * data)
+{
+ GstCDXAStrip *cdxa = GST_CDXASTRIP (gst_pad_get_parent (pad));
+ GstBuffer *buf, *sub;
+ gint sync;
+
+ if (GST_IS_EVENT (data)) {
+ gst_cdxastrip_handle_event (cdxa, GST_EVENT (data));
+ return;
+ }
+
+ buf = GST_BUFFER (data);
+ if (cdxa->cache) {
+ buf = gst_buffer_join (cdxa->cache, buf);
+ }
+ cdxa->cache = NULL;
+
+ while (buf && GST_BUFFER_SIZE (buf) >= GST_CDXA_SECTOR_SIZE) {
+ /* sync */
+ sync = gst_cdxastrip_sync (buf);
+ if (sync < 0) {
+ gst_buffer_unref (buf);
+ return;
+ }
+ sub = gst_buffer_create_sub (buf, sync, GST_BUFFER_SIZE (buf) - sync);
+ gst_buffer_unref (buf);
+ buf = sub;
+ if (GST_BUFFER_SIZE (buf) < GST_CDXA_SECTOR_SIZE)
+ break;
+
+ /* one chunk */
+ sub = gst_cdxastrip_strip (gst_buffer_ref (buf));
+ gst_pad_push (cdxa->srcpad, GST_DATA (sub));
+
+ /* cache */
+ if (GST_BUFFER_SIZE (buf) != GST_CDXA_SECTOR_SIZE) {
+ sub = gst_buffer_create_sub (buf, GST_CDXA_SECTOR_SIZE,
+ GST_BUFFER_SIZE (buf) - GST_CDXA_SECTOR_SIZE);
+ } else {
+ sub = NULL;
+ }
+ gst_buffer_unref (buf);
+ buf = sub;
+ }
+
+ cdxa->cache = buf;
+}
+
+static GstElementStateReturn
+gst_cdxastrip_change_state (GstElement * element)
+{
+ GstCDXAStrip *cdxa = GST_CDXASTRIP (element);
+
+ switch (GST_STATE_TRANSITION (element)) {
+ case GST_STATE_PAUSED_TO_READY:
+ if (cdxa->cache) {
+ gst_buffer_unref (cdxa->cache);
+ cdxa->cache = NULL;
+ }
+ break;
+ default:
+ break;
+ }
+
+ if (parent_class->change_state)
+ return parent_class->change_state (element);
+
+ return GST_STATE_SUCCESS;
+}
diff --git a/gst/cdxaparse/gstvcdparse.h b/gst/cdxaparse/gstvcdparse.h
new file mode 100644
index 00000000..59cf4ab6
--- /dev/null
+++ b/gst/cdxaparse/gstvcdparse.h
@@ -0,0 +1,67 @@
+/* GStreamer CDXA sync strippper
+ * Copyright (C) 2004 Ronald Bultje <rbultje@ronald.bitfreak.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_CDXASTRIP_H__
+#define __GST_CDXASTRIP_H__
+
+#include <gst/gst.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_CDXASTRIP \
+ (gst_cdxastrip_get_type())
+#define GST_CDXASTRIP(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CDXASTRIP,GstCDXAStrip))
+#define GST_CDXASTRIP_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CDXASTRIP,GstCDXAStrip))
+#define GST_IS_CDXASTRIP(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CDXASTRIP))
+#define GST_IS_CDXASTRIP_CLASS(obj) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CDXASTRIP))
+
+#define GST_CDXA_SECTOR_SIZE 2352
+#define GST_CDXA_DATA_SIZE 2324
+#define GST_CDXA_HEADER_SIZE 24
+
+typedef struct _GstCDXAStrip GstCDXAStrip;
+typedef struct _GstCDXAStripClass GstCDXAStripClass;
+
+struct _GstCDXAStrip {
+ GstElement parent;
+
+ /* pads */
+ GstPad *sinkpad, *srcpad;
+ GstBuffer *cache;
+};
+
+struct _GstCDXAStripClass {
+ GstElementClass parent_class;
+};
+
+GType gst_cdxastrip_get_type (void);
+
+/*
+ * Also useful for CDXAparse.
+ */
+GstBuffer * gst_cdxastrip_strip (GstBuffer * buf);
+gint gst_cdxastrip_sync (GstBuffer * buf);
+
+G_END_DECLS
+
+#endif /* __GST_CDXASTRIP_H__ */