--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/gst_plugins_good/gst/auparse/gstauparse.c Fri Apr 16 15:15:52 2010 +0300
@@ -0,0 +1,726 @@
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ * Copyright (C) <2006> Tim-Philipp Müller <tim centricular 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.
+ */
+
+/**
+ * SECTION:element-auparse
+ *
+ * Parses .au files mostly originating from sun os based computers.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "gstauparse.h"
+#include <gst/audio/audio.h>
+
+GST_DEBUG_CATEGORY_STATIC (auparse_debug);
+#define GST_CAT_DEFAULT (auparse_debug)
+
+static const GstElementDetails gst_au_parse_details =
+GST_ELEMENT_DETAILS ("AU audio demuxer",
+ "Codec/Demuxer/Audio",
+ "Parse an .au file into raw audio",
+ "Erik Walthinsen <omega@cse.ogi.edu>");
+
+static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("audio/x-au")
+ );
+
+#define GST_AU_PARSE_ALAW_PAD_TEMPLATE_CAPS \
+ "audio/x-alaw, " \
+ "rate = (int) [ 8000, 192000 ], " \
+ "channels = (int) [ 1, 2 ]"
+
+#define GST_AU_PARSE_MULAW_PAD_TEMPLATE_CAPS \
+ "audio/x-mulaw, " \
+ "rate = (int) [ 8000, 192000 ], " \
+ "channels = (int) [ 1, 2 ]"
+
+/* Nothing to decode those ADPCM streams for now */
+#define GST_AU_PARSE_ADPCM_PAD_TEMPLATE_CAPS \
+ "audio/x-adpcm, " \
+ "layout = (string) { g721, g722, g723_3, g723_5 }"
+
+static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_SOMETIMES,
+ GST_STATIC_CAPS (GST_AUDIO_INT_PAD_TEMPLATE_CAPS "; "
+ GST_AUDIO_FLOAT_PAD_TEMPLATE_CAPS ";"
+ GST_AU_PARSE_ALAW_PAD_TEMPLATE_CAPS ";"
+ GST_AU_PARSE_MULAW_PAD_TEMPLATE_CAPS ";"
+ GST_AU_PARSE_ADPCM_PAD_TEMPLATE_CAPS));
+
+
+static void gst_au_parse_dispose (GObject * object);
+static GstFlowReturn gst_au_parse_chain (GstPad * pad, GstBuffer * buf);
+static GstStateChangeReturn gst_au_parse_change_state (GstElement * element,
+ GstStateChange transition);
+static void gst_au_parse_reset (GstAuParse * auparse);
+static gboolean gst_au_parse_remove_srcpad (GstAuParse * auparse);
+static gboolean gst_au_parse_add_srcpad (GstAuParse * auparse, GstCaps * caps);
+static gboolean gst_au_parse_src_query (GstPad * pad, GstQuery * query);
+static gboolean gst_au_parse_src_event (GstPad * pad, GstEvent * event);
+static gboolean gst_au_parse_sink_event (GstPad * pad, GstEvent * event);
+
+GST_BOILERPLATE (GstAuParse, gst_au_parse, GstElement, GST_TYPE_ELEMENT);
+
+static void
+gst_au_parse_base_init (gpointer g_class)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
+
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&sink_template));
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&src_template));
+ gst_element_class_set_details (element_class, &gst_au_parse_details);
+
+ GST_DEBUG_CATEGORY_INIT (auparse_debug, "auparse", 0, ".au parser");
+}
+
+static void
+gst_au_parse_class_init (GstAuParseClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+
+ gobject_class = (GObjectClass *) klass;
+ gstelement_class = (GstElementClass *) klass;
+
+ gobject_class->dispose = gst_au_parse_dispose;
+
+ gstelement_class->change_state =
+ GST_DEBUG_FUNCPTR (gst_au_parse_change_state);
+}
+
+static void
+gst_au_parse_init (GstAuParse * auparse, GstAuParseClass * klass)
+{
+ auparse->sinkpad = gst_pad_new_from_static_template (&sink_template, "sink");
+ gst_pad_set_chain_function (auparse->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_au_parse_chain));
+ gst_pad_set_event_function (auparse->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_au_parse_sink_event));
+ gst_element_add_pad (GST_ELEMENT (auparse), auparse->sinkpad);
+
+ auparse->srcpad = NULL;
+ auparse->adapter = gst_adapter_new ();
+ gst_au_parse_reset (auparse);
+}
+
+static void
+gst_au_parse_dispose (GObject * object)
+{
+ GstAuParse *au = GST_AU_PARSE (object);
+
+ if (au->adapter != NULL) {
+ g_object_unref (au->adapter);
+ au->adapter = NULL;
+ }
+ G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+gst_au_parse_reset (GstAuParse * auparse)
+{
+ gst_au_parse_remove_srcpad (auparse);
+
+ auparse->offset = 0;
+ auparse->buffer_offset = 0;
+ auparse->encoding = 0;
+ auparse->samplerate = 0;
+ auparse->channels = 0;
+
+ gst_adapter_clear (auparse->adapter);
+
+ /* gst_segment_init (&auparse->segment, GST_FORMAT_TIME); */
+}
+
+static gboolean
+gst_au_parse_add_srcpad (GstAuParse * auparse, GstCaps * new_caps)
+{
+ if (auparse->src_caps && gst_caps_is_equal (new_caps, auparse->src_caps)) {
+ GST_LOG_OBJECT (auparse, "same caps, nothing to do");
+ return TRUE;
+ }
+
+ gst_caps_replace (&auparse->src_caps, new_caps);
+ if (auparse->srcpad != NULL) {
+ GST_DEBUG_OBJECT (auparse, "Changing src pad caps to %" GST_PTR_FORMAT,
+ auparse->src_caps);
+ gst_pad_set_caps (auparse->srcpad, auparse->src_caps);
+ }
+
+ if (auparse->srcpad == NULL) {
+ auparse->srcpad = gst_pad_new_from_static_template (&src_template, "src");
+ g_return_val_if_fail (auparse->srcpad != NULL, FALSE);
+
+#if 0
+ gst_pad_set_query_type_function (auparse->srcpad,
+ GST_DEBUG_FUNCPTR (gst_au_parse_src_get_query_types));
+#endif
+ gst_pad_set_query_function (auparse->srcpad,
+ GST_DEBUG_FUNCPTR (gst_au_parse_src_query));
+ gst_pad_set_event_function (auparse->srcpad,
+ GST_DEBUG_FUNCPTR (gst_au_parse_src_event));
+
+ gst_pad_use_fixed_caps (auparse->srcpad);
+ gst_pad_set_active (auparse->srcpad, TRUE);
+
+ if (auparse->src_caps)
+ gst_pad_set_caps (auparse->srcpad, auparse->src_caps);
+
+ GST_DEBUG_OBJECT (auparse, "Adding src pad with caps %" GST_PTR_FORMAT,
+ auparse->src_caps);
+
+ gst_object_ref (auparse->srcpad);
+ if (!gst_element_add_pad (GST_ELEMENT (auparse), auparse->srcpad))
+ return FALSE;
+ gst_element_no_more_pads (GST_ELEMENT (auparse));
+ }
+
+ return TRUE;
+}
+
+static gboolean
+gst_au_parse_remove_srcpad (GstAuParse * auparse)
+{
+ gboolean res = TRUE;
+
+ if (auparse->srcpad != NULL) {
+ GST_DEBUG_OBJECT (auparse, "Removing src pad");
+ res = gst_element_remove_pad (GST_ELEMENT (auparse), auparse->srcpad);
+ g_return_val_if_fail (res != FALSE, FALSE);
+ gst_object_unref (auparse->srcpad);
+ auparse->srcpad = NULL;
+ }
+
+ return res;
+}
+
+static GstFlowReturn
+gst_au_parse_parse_header (GstAuParse * auparse)
+{
+ GstCaps *tempcaps;
+ guint32 size;
+ guint8 *head;
+ gchar layout[7] = { 0, };
+ gint law = 0, depth = 0, ieee = 0;
+
+ head = (guint8 *) gst_adapter_peek (auparse->adapter, 24);
+ g_assert (head != NULL);
+
+ GST_DEBUG_OBJECT (auparse, "[%c%c%c%c]", head[0], head[1], head[2], head[3]);
+
+ switch (GST_READ_UINT32_BE (head)) {
+ /* normal format is big endian (au is a Sparc format) */
+ case 0x2e736e64:{ /* ".snd" */
+ auparse->endianness = G_BIG_ENDIAN;
+ break;
+ }
+ /* and of course, someone had to invent a little endian
+ * version. Used by DEC systems. */
+ case 0x646e732e: /* dns. */
+ case 0x0064732e:{ /* other source say it is "dns." */
+ auparse->endianness = G_LITTLE_ENDIAN;
+ break;
+ }
+ default:{
+ goto unknown_header;
+ }
+ }
+
+ auparse->offset = GST_READ_UINT32_BE (head + 4);
+ /* Do not trust size, could be set to -1 : unknown */
+ size = GST_READ_UINT32_BE (head + 8);
+ auparse->encoding = GST_READ_UINT32_BE (head + 12);
+ auparse->samplerate = GST_READ_UINT32_BE (head + 16);
+ auparse->channels = GST_READ_UINT32_BE (head + 20);
+
+ if (auparse->samplerate < 8000 || auparse->samplerate > 192000)
+ goto unsupported_sample_rate;
+
+ if (auparse->channels < 1 || auparse->channels > 2)
+ goto unsupported_number_of_channels;
+
+ GST_DEBUG_OBJECT (auparse, "offset %" G_GINT64_FORMAT ", size %u, "
+ "encoding %u, frequency %u, channels %u", auparse->offset, size,
+ auparse->encoding, auparse->samplerate, auparse->channels);
+
+ /* Docs:
+ * http://www.opengroup.org/public/pubs/external/auformat.html
+ * http://astronomy.swin.edu.au/~pbourke/dataformats/au/
+ * Solaris headers : /usr/include/audio/au.h
+ * libsndfile : src/au.c
+ *
+ * Samples :
+ * http://www.tsp.ece.mcgill.ca/MMSP/Documents/AudioFormats/AU/Samples.html
+ */
+
+ switch (auparse->encoding) {
+ case 1: /* 8-bit ISDN mu-law G.711 */
+ law = 1;
+ depth = 8;
+ break;
+ case 27: /* 8-bit ISDN A-law G.711 */
+ law = 2;
+ depth = 8;
+ break;
+
+ case 2: /* 8-bit linear PCM */
+ depth = 8;
+ break;
+ case 3: /* 16-bit linear PCM */
+ depth = 16;
+ break;
+ case 4: /* 24-bit linear PCM */
+ depth = 24;
+ break;
+ case 5: /* 32-bit linear PCM */
+ depth = 32;
+ break;
+
+ case 6: /* 32-bit IEEE floating point */
+ ieee = 1;
+ depth = 32;
+ break;
+ case 7: /* 64-bit IEEE floating point */
+ ieee = 1;
+ depth = 64;
+ break;
+
+ case 23: /* 4-bit CCITT G.721 ADPCM 32kbps -> modplug/libsndfile (compressed 8-bit mu-law) */
+ strcpy (layout, "g721");
+ break;
+ case 24: /* 8-bit CCITT G.722 ADPCM -> rtp */
+ strcpy (layout, "g722");
+ break;
+ case 25: /* 3-bit CCITT G.723.3 ADPCM 24kbps -> rtp/xine/modplug/libsndfile */
+ strcpy (layout, "g723_3");
+ break;
+ case 26: /* 5-bit CCITT G.723.5 ADPCM 40kbps -> rtp/xine/modplug/libsndfile */
+ strcpy (layout, "g723_5");
+ break;
+
+ case 8: /* Fragmented sample data */
+ case 9: /* AU_ENCODING_NESTED */
+
+ case 10: /* DSP program */
+ case 11: /* DSP 8-bit fixed point */
+ case 12: /* DSP 16-bit fixed point */
+ case 13: /* DSP 24-bit fixed point */
+ case 14: /* DSP 32-bit fixed point */
+
+ case 16: /* AU_ENCODING_DISPLAY : non-audio display data */
+ case 17: /* AU_ENCODING_MULAW_SQUELCH */
+
+ case 18: /* 16-bit linear with emphasis */
+ case 19: /* 16-bit linear compressed (NeXT) */
+ case 20: /* 16-bit linear with emphasis and compression */
+
+ case 21: /* Music kit DSP commands */
+ case 22: /* Music kit DSP commands samples */
+
+ default:
+ goto unknown_format;
+ }
+
+ if (law) {
+ tempcaps =
+ gst_caps_new_simple ((law == 1) ? "audio/x-mulaw" : "audio/x-alaw",
+ "rate", G_TYPE_INT, auparse->samplerate,
+ "channels", G_TYPE_INT, auparse->channels, NULL);
+ auparse->sample_size = auparse->channels;
+ } else if (ieee) {
+ tempcaps = gst_caps_new_simple ("audio/x-raw-float",
+ "rate", G_TYPE_INT, auparse->samplerate,
+ "channels", G_TYPE_INT, auparse->channels,
+ "endianness", G_TYPE_INT, auparse->endianness,
+ "width", G_TYPE_INT, depth, NULL);
+ auparse->sample_size = auparse->channels * depth / 8;
+ } else if (layout[0]) {
+ tempcaps = gst_caps_new_simple ("audio/x-adpcm",
+ "layout", G_TYPE_STRING, layout, NULL);
+ auparse->sample_size = 0;
+ } else {
+ tempcaps = gst_caps_new_simple ("audio/x-raw-int",
+ "rate", G_TYPE_INT, auparse->samplerate,
+ "channels", G_TYPE_INT, auparse->channels,
+ "endianness", G_TYPE_INT, auparse->endianness,
+ "depth", G_TYPE_INT, depth, "width", G_TYPE_INT, depth,
+ /* FIXME: signed TRUE even for 8-bit PCM? */
+ "signed", G_TYPE_BOOLEAN, TRUE, NULL);
+ auparse->sample_size = auparse->channels * depth / 8;
+ }
+
+ GST_DEBUG_OBJECT (auparse, "sample_size=%d", auparse->sample_size);
+
+ if (!gst_au_parse_add_srcpad (auparse, tempcaps))
+ goto add_pad_failed;
+
+ GST_DEBUG_OBJECT (auparse, "offset=%" G_GINT64_FORMAT, auparse->offset);
+ gst_adapter_flush (auparse->adapter, auparse->offset);
+
+ gst_caps_unref (tempcaps);
+ return GST_FLOW_OK;
+
+ /* ERRORS */
+unknown_header:
+ {
+ GST_ELEMENT_ERROR (auparse, STREAM, WRONG_TYPE, (NULL), (NULL));
+ return GST_FLOW_ERROR;
+ }
+unsupported_sample_rate:
+ {
+ GST_ELEMENT_ERROR (auparse, STREAM, FORMAT, (NULL),
+ ("Unsupported samplerate: %u", auparse->samplerate));
+ return GST_FLOW_ERROR;
+ }
+unsupported_number_of_channels:
+ {
+ GST_ELEMENT_ERROR (auparse, STREAM, FORMAT, (NULL),
+ ("Unsupported number of channels: %u", auparse->channels));
+ return GST_FLOW_ERROR;
+ }
+unknown_format:
+ {
+ GST_ELEMENT_ERROR (auparse, STREAM, FORMAT, (NULL),
+ ("Unsupported encoding: %u", auparse->encoding));
+ return GST_FLOW_ERROR;
+ }
+add_pad_failed:
+ {
+ GST_ELEMENT_ERROR (auparse, STREAM, FAILED, (NULL),
+ ("Failed to add srcpad"));
+ gst_caps_unref (tempcaps);
+ return GST_FLOW_ERROR;
+ }
+}
+
+#define AU_HEADER_SIZE 24
+
+static GstFlowReturn
+gst_au_parse_chain (GstPad * pad, GstBuffer * buf)
+{
+ GstFlowReturn ret = GST_FLOW_OK;
+ GstAuParse *auparse;
+ gint avail, sendnow = 0;
+
+ auparse = GST_AU_PARSE (gst_pad_get_parent (pad));
+
+ GST_LOG_OBJECT (auparse, "got buffer of size %u", GST_BUFFER_SIZE (buf));
+
+ gst_adapter_push (auparse->adapter, buf);
+ buf = NULL;
+
+ /* if we haven't seen any data yet... */
+ if (auparse->srcpad == NULL) {
+ if (gst_adapter_available (auparse->adapter) < AU_HEADER_SIZE) {
+ GST_DEBUG_OBJECT (auparse, "need more data to parse header");
+ ret = GST_FLOW_OK;
+ goto out;
+ }
+
+ ret = gst_au_parse_parse_header (auparse);
+ if (ret != GST_FLOW_OK)
+ goto out;
+
+ gst_pad_push_event (auparse->srcpad,
+ gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_DEFAULT,
+ 0, GST_CLOCK_TIME_NONE, 0));
+ }
+
+ avail = gst_adapter_available (auparse->adapter);
+
+ if (auparse->sample_size > 0) {
+ /* Ensure we push a buffer that's a multiple of the frame size downstream */
+ sendnow = avail - (avail % auparse->sample_size);
+ } else {
+ /* It's something non-trivial (such as ADPCM), we don't understand it, so
+ * just push downstream and assume it will know what to do with it */
+ sendnow = avail;
+ }
+
+ if (sendnow > 0) {
+ GstBuffer *outbuf;
+ const guint8 *data;
+
+ ret = gst_pad_alloc_buffer_and_set_caps (auparse->srcpad,
+ auparse->buffer_offset, sendnow, GST_PAD_CAPS (auparse->srcpad),
+ &outbuf);
+
+ if (ret != GST_FLOW_OK) {
+ GST_DEBUG_OBJECT (auparse, "pad alloc flow: %s", gst_flow_get_name (ret));
+ goto out;
+ }
+
+ data = gst_adapter_peek (auparse->adapter, sendnow);
+ memcpy (GST_BUFFER_DATA (outbuf), data, sendnow);
+ gst_adapter_flush (auparse->adapter, sendnow);
+
+ auparse->buffer_offset += sendnow;
+
+ ret = gst_pad_push (auparse->srcpad, outbuf);
+ }
+
+out:
+
+ gst_object_unref (auparse);
+ return ret;
+}
+
+static gboolean
+gst_au_parse_src_convert (GstAuParse * auparse, GstFormat src_format,
+ gint64 srcval, GstFormat dest_format, gint64 * destval)
+{
+ gboolean ret = TRUE;
+ guint samplesize, rate;
+
+ if (dest_format == src_format) {
+ *destval = srcval;
+ return TRUE;
+ }
+
+ GST_OBJECT_LOCK (auparse);
+ samplesize = auparse->sample_size;
+ rate = auparse->samplerate;
+ GST_OBJECT_UNLOCK (auparse);
+
+ if (samplesize == 0 || rate == 0) {
+ GST_LOG_OBJECT (auparse, "cannot convert, sample_size or rate unknown");
+ return FALSE;
+ }
+
+ switch (src_format) {
+ case GST_FORMAT_BYTES:
+ srcval /= samplesize;
+ /* fallthrough */
+ case GST_FORMAT_DEFAULT:{
+ switch (dest_format) {
+ case GST_FORMAT_BYTES:
+ *destval = srcval * samplesize;
+ break;
+ case GST_FORMAT_TIME:
+ *destval = gst_util_uint64_scale_int (srcval, GST_SECOND, rate);
+ break;
+ default:
+ ret = FALSE;
+ break;
+ }
+ break;
+ }
+ case GST_FORMAT_TIME:{
+ switch (dest_format) {
+ case GST_FORMAT_BYTES:
+ *destval =
+ gst_util_uint64_scale_int (srcval, rate * samplesize, GST_SECOND);
+ break;
+ case GST_FORMAT_DEFAULT:
+ *destval = gst_util_uint64_scale_int (srcval, rate, GST_SECOND);
+ break;
+ default:
+ ret = FALSE;
+ break;
+ }
+ break;
+ }
+ default:{
+ ret = FALSE;
+ break;
+ }
+ }
+
+ if (!ret) {
+ GST_DEBUG_OBJECT (auparse, "could not convert from %s to %s format",
+ gst_format_get_name (src_format), gst_format_get_name (dest_format));
+ }
+
+ return ret;
+}
+
+static gboolean
+gst_au_parse_src_query (GstPad * pad, GstQuery * query)
+{
+ GstAuParse *auparse;
+ gboolean ret = FALSE;
+
+ auparse = GST_AU_PARSE (gst_pad_get_parent (pad));
+
+ switch (GST_QUERY_TYPE (query)) {
+ case GST_QUERY_DURATION:{
+ GstFormat bformat = GST_FORMAT_BYTES;
+ GstFormat format;
+ gint64 len, val;
+
+ gst_query_parse_duration (query, &format, NULL);
+ if (!gst_pad_query_peer_duration (auparse->sinkpad, &bformat, &len)) {
+ GST_DEBUG_OBJECT (auparse, "failed to query upstream length");
+ break;
+ }
+ GST_OBJECT_LOCK (auparse);
+ len -= auparse->offset;
+ GST_OBJECT_UNLOCK (auparse);
+
+ ret = gst_au_parse_src_convert (auparse, GST_FORMAT_BYTES, len,
+ format, &val);
+
+ if (ret) {
+ gst_query_set_duration (query, format, val);
+ }
+ break;
+ }
+ case GST_QUERY_POSITION:{
+ GstFormat bformat = GST_FORMAT_BYTES;
+ GstFormat format;
+ gint64 pos, val;
+
+ gst_query_parse_position (query, &format, NULL);
+ if (!gst_pad_query_peer_position (auparse->sinkpad, &bformat, &pos)) {
+ GST_DEBUG_OBJECT (auparse, "failed to query upstream position");
+ break;
+ }
+ GST_OBJECT_LOCK (auparse);
+ pos -= auparse->offset;
+ GST_OBJECT_UNLOCK (auparse);
+
+ ret = gst_au_parse_src_convert (auparse, GST_FORMAT_BYTES, pos,
+ format, &val);
+
+ if (ret) {
+ gst_query_set_position (query, format, val);
+ }
+ break;
+ }
+ default:
+ ret = gst_pad_query_default (pad, query);
+ break;
+ }
+
+ gst_object_unref (auparse);
+ return ret;
+}
+
+static gboolean
+gst_au_parse_handle_seek (GstAuParse * auparse, GstEvent * event)
+{
+ GstSeekType start_type, stop_type;
+ GstSeekFlags flags;
+ GstFormat format;
+ gdouble rate;
+ gint64 start, stop;
+
+ gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
+ &stop_type, &stop);
+
+ if (format != GST_FORMAT_TIME) {
+ GST_DEBUG_OBJECT (auparse, "only support seeks in TIME format");
+ return FALSE;
+ }
+
+ /* FIXME: implement seeking */
+ return FALSE;
+}
+
+static gboolean
+gst_au_parse_sink_event (GstPad * pad, GstEvent * event)
+{
+ GstAuParse *auparse;
+ gboolean ret;
+
+ auparse = GST_AU_PARSE (gst_pad_get_parent (pad));
+
+ switch (GST_EVENT_TYPE (event)) {
+ default:
+ ret = gst_pad_event_default (pad, event);
+ break;
+ }
+
+ gst_object_unref (auparse);
+ return ret;
+}
+
+static gboolean
+gst_au_parse_src_event (GstPad * pad, GstEvent * event)
+{
+ GstAuParse *auparse;
+ gboolean ret;
+
+ auparse = GST_AU_PARSE (gst_pad_get_parent (pad));
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_SEEK:
+ ret = gst_au_parse_handle_seek (auparse, event);
+ break;
+ default:
+ ret = gst_pad_event_default (pad, event);
+ break;
+ }
+
+ gst_object_unref (auparse);
+ return ret;
+}
+
+static GstStateChangeReturn
+gst_au_parse_change_state (GstElement * element, GstStateChange transition)
+{
+ GstAuParse *auparse = GST_AU_PARSE (element);
+ GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
+
+ ret = parent_class->change_state (element, transition);
+ if (ret == GST_STATE_CHANGE_FAILURE)
+ return ret;
+
+ switch (transition) {
+ case GST_STATE_CHANGE_PAUSED_TO_READY:
+ gst_au_parse_reset (auparse);
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+ if (!gst_element_register (plugin, "auparse", GST_RANK_SECONDARY,
+ GST_TYPE_AU_PARSE)) {
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "auparse",
+ "parses au streams", plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME,
+ GST_PACKAGE_ORIGIN)
+
+EXPORT_C GstPluginDesc* _GST_PLUGIN_DESC()
+{
+ return &gst_plugin_desc;
+}