+/* -*- Mode: C; tab-width: 2; indent-tabs-mode: t; c-basic-offset: 2 -*- */
/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* <2002> Wim Taymans <wim.taymans@chello.be>
#include <string.h>
#include "gstcdxaparse.h"
+#include "gst/riff/riff-ids.h"
+#include "gst/riff/riff-media.h"
-#define MAKE_FOUR_CC(a,b,c,d) ( ((guint32)a) | (((guint32)b)<< 8) | \
- ((guint32)c)<<16 | (((guint32)d)<<24) )
-
+static void gst_cdxa_parse_base_init (gpointer g_class);
+static void gst_cdxa_parse_class_init (GstCDXAParseClass * klass);
+static void gst_cdxa_parse_init (GstCDXAParse * cdxa_parse);
-/* 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')
+static GstElementStateReturn gst_cdxa_parse_change_state (GstElement * element);
+static void gst_cdxa_parse_loop (GstElement * element);
-#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 =
+GST_ELEMENT_DETAILS (".dat parser",
+ "Codec/Parser",
+ "Parse a .dat file (VCD) into raw mpeg1",
+ "Wim Taymans <wim.taymans@tvd.be>");
+static GstStaticPadTemplate sink_template_factory =
+GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("video/x-cdxa")
+ );
-/* elementfactory information */
-static GstElementDetails gst_cdxa_parse_details = {
- ".dat parser",
- "Codec/Parser",
- "Parse a .dat file (VCD) into raw mpeg1",
- "Wim Taymans <wim.taymans@tvd.be>",
-};
+static GstStaticPadTemplate src_template_factory =
+GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("video/mpeg, " "systemstream = (boolean) TRUE")
+ );
/* CDXAParse signals and args */
enum
/* FILL ME */
};
-static GstStaticPadTemplate sink_templ = GST_STATIC_PAD_TEMPLATE ("sink",
- GST_PAD_SINK,
- GST_PAD_ALWAYS,
- GST_STATIC_CAPS ("video/x-cdxa")
- );
-
-static GstStaticPadTemplate src_templ = GST_STATIC_PAD_TEMPLATE ("src",
- GST_PAD_SRC,
- GST_PAD_ALWAYS,
- GST_STATIC_CAPS ("video/mpeg, " "systemstream = (boolean) TRUE, "
- "mpegversion = (int) 1")
- );
-
-static void gst_cdxa_parse_base_init (gpointer g_class);
-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 }; */
};
cdxa_parse_type =
- g_type_register_static (GST_TYPE_ELEMENT, "GstCDXAParse",
+ g_type_register_static (GST_TYPE_RIFF_READ, "GstCDXAParse",
&cdxa_parse_info, 0);
}
return cdxa_parse_type;
}
+
static void
gst_cdxa_parse_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
+ gst_element_class_set_details (element_class, &gst_cdxa_parse_details);
+
+ /* register src pads */
gst_element_class_add_pad_template (element_class,
- gst_static_pad_template_get (&src_templ));
+ gst_static_pad_template_get (&sink_template_factory));
gst_element_class_add_pad_template (element_class,
- gst_static_pad_template_get (&sink_templ));
- gst_element_class_set_details (element_class, &gst_cdxa_parse_details);
+ gst_static_pad_template_get (&src_template_factory));
}
static void
gst_cdxa_parse_class_init (GstCDXAParseClass * klass)
{
- GObjectClass *gobject_class;
GstElementClass *gstelement_class;
+ GObjectClass *object_class;
- gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
+ object_class = (GObjectClass *) klass;
- parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
+ parent_class = g_type_class_ref (GST_TYPE_RIFF_READ);
gstelement_class->change_state = gst_cdxa_parse_change_state;
}
static void
gst_cdxa_parse_init (GstCDXAParse * cdxa_parse)
{
- GST_FLAG_SET (cdxa_parse, GST_ELEMENT_EVENT_AWARE);
-
+ /* sink */
cdxa_parse->sinkpad =
- gst_pad_new_from_template (gst_static_pad_template_get (&sink_templ),
- "sink");
+ gst_pad_new_from_template (gst_static_pad_template_get
+ (&sink_template_factory), "sink");
gst_element_add_pad (GST_ELEMENT (cdxa_parse), cdxa_parse->sinkpad);
+ GST_RIFF_READ (cdxa_parse)->sinkpad = cdxa_parse->sinkpad;
+
+
+ gst_element_set_loop_function (GST_ELEMENT (cdxa_parse), gst_cdxa_parse_loop);
+
cdxa_parse->srcpad =
- gst_pad_new_from_template (gst_static_pad_template_get (&src_templ),
- "src");
+ gst_pad_new_from_template (gst_static_pad_template_get
+ (&src_template_factory), "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);
+ cdxa_parse->state = GST_CDXA_PARSE_START;
+ cdxa_parse->seek_pending = FALSE;
+ cdxa_parse->seek_offset = 0;
}
static gboolean
-gst_cdxa_parse_handle_event (GstCDXAParse * cdxa_parse)
+gst_cdxa_parse_stream_init (GstCDXAParse * cdxa_parse)
{
- guint32 remaining;
- GstEvent *event;
- GstEventType type;
+ GstRiffRead *riff = GST_RIFF_READ (cdxa_parse);
+ guint32 doctype;
- gst_bytestream_get_status (cdxa_parse->bs, &remaining, &event);
+ if (!gst_riff_read_header (riff, &doctype))
+ return FALSE;
- type = event ? GST_EVENT_TYPE (event) : GST_EVENT_UNKNOWN;
+ if (doctype != GST_RIFF_RIFF_CDXA) {
+ GST_ELEMENT_ERROR (cdxa_parse, STREAM, WRONG_TYPE, (NULL), (NULL));
+ return FALSE;
+ }
- 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");
+ return TRUE;
+}
+
+/* Read 'fmt ' header */
+static gboolean
+gst_cdxa_parse_fmt (GstCDXAParse * cdxa_parse)
+{
+ GstRiffRead *riff = GST_RIFF_READ (cdxa_parse);
+ gst_riff_strf_auds *header;
+
+ if (!gst_riff_read_strf_auds (riff, &header)) {
+ g_warning ("Not fmt");
+ return FALSE;
+ }
+
+ /* As we don't know what is in this fmt field, we do nothing */
+
+ return TRUE;
+}
+
+static gboolean
+gst_cdxa_parse_other (GstCDXAParse * cdxa_parse)
+{
+ GstRiffRead *riff = GST_RIFF_READ (cdxa_parse);
+ guint32 tag, length;
+
+ /* Fixme, need to handle a seek...can you seek in cdxa? */
+
+ if (!gst_riff_peek_head (riff, &tag, &length, NULL)) {
+ return FALSE;
+ }
+
+ switch (tag) {
+ case GST_RIFF_TAG_data:
+ gst_bytestream_flush (riff->bs, 8);
+
+ cdxa_parse->state = GST_CDXA_PARSE_DATA;
+ cdxa_parse->dataleft = (guint64) length;
break;
+
default:
- g_warning ("unhandled event %d\n", type);
+ gst_riff_read_skip (riff);
break;
}
return TRUE;
}
-/*
+#define MAX_BUFFER_SIZE 4096
+
+static void
+gst_cdxa_parse_loop (GstElement * element)
+{
+ GstCDXAParse *cdxa_parse = GST_CDXA_PARSE (element);
+ GstRiffRead *riff = GST_RIFF_READ (cdxa_parse);
-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...
+ if (cdxa_parse->state == GST_CDXA_PARSE_DATA) {
+ if (cdxa_parse->dataleft > 0) {
+ guint32 got_bytes, desired;
+ GstBuffer *buf, *outbuf;
-*/
+ desired = GST_CDXA_SECTOR_SIZE;
-typedef struct
-{
- gchar RIFF_tag[4];
- guint32 riff_size;
- gchar CDXA_tag[4];
- gchar fmt_tag[4];
- guint32 fmt_size;
-}
-CDXAParseHeader;
+ buf = gst_riff_read_element_data (riff, desired, &got_bytes);
/*
-A sectors is 2352 bytes long and is composed of:
+
+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_cdxa_parse_loop (GstElement * element)
-{
- GstCDXAParse *cdxa_parse;
- CDXAParseHeader *header;
- guint8 *headerdata;
-
- 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;
- guint32 got_bytes;
-
- got_bytes = gst_bytestream_peek_bytes (cdxa_parse->bs, &headerdata, 20);
- header = (CDXAParseHeader *) headerdata;
- if (got_bytes < 20)
- 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 */
- got_bytes =
- gst_bytestream_peek_bytes (cdxa_parse->bs, (guint8 **) & buf, 4);
- if (got_bytes < 4)
- return;
- cdxa_parse->data_size = GST_READ_UINT32_LE (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;
- guint32 got_bytes;
-
- got_bytes = gst_bytestream_read (cdxa_parse->bs, &buf, CDXA_SECTOR_SIZE);
- if (got_bytes < CDXA_SECTOR_SIZE) {
- gst_cdxa_parse_handle_event (cdxa_parse);
- return;
+/*
+ if (got_bytes < GST_CDXA_SECTOR_SIZE) {
+ gst_cdxa_parse_handle_event (cdxa_parse);
+ return;
+ }
+*/
+
+ /* Extract time from CDXA header */
+/* printf( "%02u:%02u:%02u\n", (unsigned char) *(GST_BUFFER_DATA(buf)+12), (unsigned char) *(GST_BUFFER_DATA(buf)+13), (unsigned char) *(GST_BUFFER_DATA(buf)+14) );*/
+
+ /* Jump CDXA headers, only keep data */
+ outbuf = gst_buffer_create_sub (buf, 24, GST_CDXA_DATA_SIZE);
+ gst_buffer_unref (buf);
+
+ gst_pad_push (cdxa_parse->srcpad, GST_DATA (outbuf));
+
+ cdxa_parse->byteoffset += got_bytes;
+ if (got_bytes < cdxa_parse->dataleft) {
+ cdxa_parse->dataleft -= got_bytes;
+ return;
+ } else {
+ cdxa_parse->dataleft = 0;
+ cdxa_parse->state = GST_CDXA_PARSE_OTHER;
+ }
+ } else {
+ cdxa_parse->state = GST_CDXA_PARSE_OTHER;
}
+ }
+
+ switch (cdxa_parse->state) {
+ case GST_CDXA_PARSE_START:
+ if (!gst_cdxa_parse_stream_init (cdxa_parse)) {
+ return;
+ }
+
+ cdxa_parse->state = GST_CDXA_PARSE_FMT;
+ /* fall-through */
+
+ case GST_CDXA_PARSE_FMT:
+ if (!gst_cdxa_parse_fmt (cdxa_parse)) {
+ return;
+ }
+
+ cdxa_parse->state = GST_CDXA_PARSE_OTHER;
+ /* fall-through */
+
+ case GST_CDXA_PARSE_OTHER:
+ if (!gst_cdxa_parse_other (cdxa_parse)) {
+ return;
+ }
+
+ break;
- outbuf = gst_buffer_create_sub (buf, 24, CDXA_DATA_SIZE);
- gst_buffer_unref (buf);
+ case GST_CDXA_PARSE_DATA:
- gst_pad_push (cdxa_parse->srcpad, GST_DATA (outbuf));
+ default:
+ g_assert_not_reached ();
}
}
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);
+ cdxa_parse->state = GST_CDXA_PARSE_START;
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);
+ cdxa_parse->state = GST_CDXA_PARSE_START;
+
+
+ cdxa_parse->seek_pending = FALSE;
+ cdxa_parse->seek_offset = 0;
break;
+
case GST_STATE_READY_TO_NULL:
break;
- default:
- break;
}
- parent_class->change_state (element);
+ if (GST_ELEMENT_CLASS (parent_class)->change_state)
+ return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}
static gboolean
plugin_init (GstPlugin * plugin)
{
- if (!gst_library_load ("gstbytestream"))
- return FALSE;
-
- if (!gst_element_register (plugin, "cdxaparse", GST_RANK_SECONDARY,
- GST_TYPE_CDXA_PARSE))
+ if (!gst_library_load ("riff")) {
return FALSE;
+ }
- return TRUE;
+ return gst_element_register (plugin, "cdxaparse", GST_RANK_SECONDARY,
+ GST_TYPE_CDXA_PARSE);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
projects / platform / upstream / gstreamer.git / commitdiff