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715 lines
20 KiB
C
715 lines
20 KiB
C
/* GStreamer
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* Copyright (C) <2004> Thomas Vander Stichele <thomas at apestaart dot org>
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* Copyright (C) 2006 Andy Wingo <wingo@pobox.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/**
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* SECTION:element-vorbisparse
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* @title: vorbisparse
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* @see_also: vorbisdec, oggdemux, theoraparse
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*
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* The vorbisparse element will parse the header packets of the Vorbis
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* stream and put them as the streamheader in the caps. This is used in the
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* multifdsink case where you want to stream live vorbis streams to multiple
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* clients, each client has to receive the streamheaders first before they can
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* consume the vorbis packets.
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*
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* This element also makes sure that the buffers that it pushes out are properly
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* timestamped and that their offset and offset_end are set. The buffers that
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* vorbisparse outputs have all of the metadata that oggmux expects to receive,
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* which allows you to (for example) remux an ogg/vorbis file.
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*
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* ## Example pipelines
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* |[
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* gst-launch-1.0 -v filesrc location=sine.ogg ! oggdemux ! vorbisparse ! fakesink
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* ]|
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* This pipeline shows that the streamheader is set in the caps, and that each
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* buffer has the timestamp, duration, offset, and offset_end set.
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* |[
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* gst-launch-1.0 filesrc location=sine.ogg ! oggdemux ! vorbisparse \
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* ! oggmux ! filesink location=sine-remuxed.ogg
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* ]|
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* This pipeline shows remuxing. sine-remuxed.ogg might not be exactly the same
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* as sine.ogg, but they should produce exactly the same decoded data.
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*
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include "gstvorbiselements.h"
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#include "gstvorbisparse.h"
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GST_DEBUG_CATEGORY_STATIC (vorbisparse_debug);
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#define GST_CAT_DEFAULT vorbisparse_debug
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static GstStaticPadTemplate vorbis_parse_sink_factory =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("audio/x-vorbis")
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);
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static GstStaticPadTemplate vorbis_parse_src_factory =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("audio/x-vorbis")
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);
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#define gst_vorbis_parse_parent_class parent_class
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G_DEFINE_TYPE (GstVorbisParse, gst_vorbis_parse, GST_TYPE_ELEMENT);
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GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (vorbisparse, "vorbisparse",
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GST_RANK_NONE, GST_TYPE_VORBIS_PARSE,
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GST_DEBUG_CATEGORY_INIT (vorbisparse_debug, "vorbisparse", 0,
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"vorbis parsing element");
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vorbis_element_init (plugin));
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static GstFlowReturn vorbis_parse_chain (GstPad * pad, GstObject * parent,
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GstBuffer * buffer);
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static GstStateChangeReturn vorbis_parse_change_state (GstElement * element,
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GstStateChange transition);
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static gboolean vorbis_parse_sink_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static gboolean vorbis_parse_src_query (GstPad * pad, GstObject * parent,
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GstQuery * query);
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static gboolean vorbis_parse_convert (GstPad * pad, GstFormat src_format,
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gint64 src_value, GstFormat * dest_format, gint64 * dest_value);
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static GstFlowReturn vorbis_parse_parse_packet (GstVorbisParse * parse,
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GstBuffer * buf);
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static void
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gst_vorbis_parse_class_init (GstVorbisParseClass * klass)
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{
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GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
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gstelement_class->change_state = vorbis_parse_change_state;
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gst_element_class_add_static_pad_template (gstelement_class,
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&vorbis_parse_src_factory);
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gst_element_class_add_static_pad_template (gstelement_class,
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&vorbis_parse_sink_factory);
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gst_element_class_set_static_metadata (gstelement_class, "VorbisParse",
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"Codec/Parser/Audio", "parse raw vorbis streams",
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"Thomas Vander Stichele <thomas at apestaart dot org>");
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klass->parse_packet = GST_DEBUG_FUNCPTR (vorbis_parse_parse_packet);
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}
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static void
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gst_vorbis_parse_init (GstVorbisParse * parse)
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{
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parse->sinkpad =
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gst_pad_new_from_static_template (&vorbis_parse_sink_factory, "sink");
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gst_pad_set_chain_function (parse->sinkpad,
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GST_DEBUG_FUNCPTR (vorbis_parse_chain));
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gst_pad_set_event_function (parse->sinkpad,
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GST_DEBUG_FUNCPTR (vorbis_parse_sink_event));
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gst_element_add_pad (GST_ELEMENT (parse), parse->sinkpad);
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parse->srcpad =
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gst_pad_new_from_static_template (&vorbis_parse_src_factory, "src");
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gst_pad_set_query_function (parse->srcpad,
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GST_DEBUG_FUNCPTR (vorbis_parse_src_query));
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gst_element_add_pad (GST_ELEMENT (parse), parse->srcpad);
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}
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static void
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vorbis_parse_set_header_on_caps (GstVorbisParse * parse, GstCaps * caps)
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{
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GstBuffer *buf1, *buf2, *buf3;
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GstStructure *structure;
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GValue array = { 0 };
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GValue value = { 0 };
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g_assert (parse);
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g_assert (parse->streamheader);
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g_assert (parse->streamheader->next);
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g_assert (parse->streamheader->next->next);
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buf1 = parse->streamheader->data;
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g_assert (buf1);
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buf2 = parse->streamheader->next->data;
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g_assert (buf2);
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buf3 = parse->streamheader->next->next->data;
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g_assert (buf3);
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structure = gst_caps_get_structure (caps, 0);
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/* mark buffers */
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GST_BUFFER_FLAG_SET (buf1, GST_BUFFER_FLAG_HEADER);
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GST_BUFFER_FLAG_SET (buf2, GST_BUFFER_FLAG_HEADER);
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GST_BUFFER_FLAG_SET (buf3, GST_BUFFER_FLAG_HEADER);
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/* put buffers in a fixed list */
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g_value_init (&array, GST_TYPE_ARRAY);
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g_value_init (&value, GST_TYPE_BUFFER);
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gst_value_set_buffer (&value, buf1);
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gst_value_array_append_value (&array, &value);
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g_value_unset (&value);
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g_value_init (&value, GST_TYPE_BUFFER);
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gst_value_set_buffer (&value, buf2);
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gst_value_array_append_value (&array, &value);
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g_value_unset (&value);
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g_value_init (&value, GST_TYPE_BUFFER);
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gst_value_set_buffer (&value, buf3);
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gst_value_array_append_value (&array, &value);
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gst_structure_take_value (structure, "streamheader", &array);
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g_value_unset (&value);
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}
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static void
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vorbis_parse_drain_event_queue (GstVorbisParse * parse)
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{
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while (parse->event_queue->length) {
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GstEvent *event;
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event = GST_EVENT_CAST (g_queue_pop_head (parse->event_queue));
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gst_pad_event_default (parse->sinkpad, GST_OBJECT_CAST (parse), event);
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}
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}
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static gboolean
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vorbis_parse_have_header_packet (GstVorbisParse * parse, guint8 hdr_id)
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{
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guint8 hdr;
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GList *l;
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for (l = parse->streamheader; l != NULL; l = l->next) {
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if (gst_buffer_extract (l->data, 0, &hdr, 1) == 1 && hdr == hdr_id)
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return TRUE;
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}
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return FALSE;
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}
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static gboolean
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vorbis_parse_push_headers (GstVorbisParse * parse)
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{
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/* mark and put on caps */
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GstCaps *caps;
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GstBuffer *outbuf, *outbuf1, *outbuf2, *outbuf3;
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ogg_packet packet;
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GstMapInfo map;
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const gchar *hdr_name;
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/* Check we have enough header packets, and the right ones */
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hdr_name = "identification";
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if (!vorbis_parse_have_header_packet (parse, 1))
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goto missing_header;
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hdr_name = "comment";
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if (!vorbis_parse_have_header_packet (parse, 3))
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goto missing_header;
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hdr_name = "setup";
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if (!vorbis_parse_have_header_packet (parse, 5))
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goto missing_header;
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outbuf = GST_BUFFER_CAST (parse->streamheader->data);
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gst_buffer_map (outbuf, &map, GST_MAP_READ);
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packet.packet = map.data;
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packet.bytes = map.size;
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packet.granulepos = GST_BUFFER_OFFSET_END (outbuf);
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packet.packetno = 1;
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packet.e_o_s = 0;
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packet.b_o_s = 1;
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vorbis_synthesis_headerin (&parse->vi, &parse->vc, &packet);
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gst_buffer_unmap (outbuf, &map);
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parse->sample_rate = parse->vi.rate;
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parse->channels = parse->vi.channels;
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outbuf1 = outbuf;
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outbuf = GST_BUFFER_CAST (parse->streamheader->next->data);
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gst_buffer_map (outbuf, &map, GST_MAP_READ);
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packet.packet = map.data;
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packet.bytes = map.size;
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packet.granulepos = GST_BUFFER_OFFSET_END (outbuf);
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packet.packetno = 2;
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packet.e_o_s = 0;
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packet.b_o_s = 0;
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vorbis_synthesis_headerin (&parse->vi, &parse->vc, &packet);
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gst_buffer_unmap (outbuf, &map);
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outbuf2 = outbuf;
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outbuf = GST_BUFFER_CAST (parse->streamheader->next->next->data);
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gst_buffer_map (outbuf, &map, GST_MAP_READ);
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packet.packet = map.data;
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packet.bytes = map.size;
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packet.granulepos = GST_BUFFER_OFFSET_END (outbuf);
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packet.packetno = 3;
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packet.e_o_s = 0;
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packet.b_o_s = 0;
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vorbis_synthesis_headerin (&parse->vi, &parse->vc, &packet);
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gst_buffer_unmap (outbuf, &map);
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outbuf3 = outbuf;
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/* get the headers into the caps, passing them to vorbis as we go */
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caps = gst_caps_new_simple ("audio/x-vorbis",
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"rate", G_TYPE_INT, parse->sample_rate,
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"channels", G_TYPE_INT, parse->channels, NULL);
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vorbis_parse_set_header_on_caps (parse, caps);
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GST_DEBUG_OBJECT (parse, "here are the caps: %" GST_PTR_FORMAT, caps);
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gst_pad_set_caps (parse->srcpad, caps);
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gst_caps_unref (caps);
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/* first process queued events */
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vorbis_parse_drain_event_queue (parse);
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/* push out buffers, ignoring return value... */
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gst_pad_push (parse->srcpad, outbuf1);
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gst_pad_push (parse->srcpad, outbuf2);
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gst_pad_push (parse->srcpad, outbuf3);
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g_list_free (parse->streamheader);
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parse->streamheader = NULL;
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return TRUE;
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/* ERRORS */
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missing_header:
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{
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GST_ELEMENT_ERROR (parse, STREAM, DECODE, (NULL),
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("Vorbis stream is missing %s header", hdr_name));
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return FALSE;
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}
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}
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static void
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vorbis_parse_clear_queue (GstVorbisParse * parse)
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{
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while (parse->buffer_queue->length) {
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GstBuffer *buf;
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buf = GST_BUFFER_CAST (g_queue_pop_head (parse->buffer_queue));
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gst_buffer_unref (buf);
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}
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while (parse->event_queue->length) {
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GstEvent *event;
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event = GST_EVENT_CAST (g_queue_pop_head (parse->event_queue));
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gst_event_unref (event);
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}
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}
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static GstFlowReturn
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vorbis_parse_push_buffer (GstVorbisParse * parse, GstBuffer * buf,
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gint64 granulepos)
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{
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guint64 samples;
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/* our hack as noted below */
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samples = GST_BUFFER_OFFSET (buf);
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GST_BUFFER_OFFSET_END (buf) = granulepos;
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GST_BUFFER_DURATION (buf) = samples * GST_SECOND / parse->sample_rate;
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GST_BUFFER_OFFSET (buf) = granulepos * GST_SECOND / parse->sample_rate;
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GST_BUFFER_TIMESTAMP (buf) =
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GST_BUFFER_OFFSET (buf) - GST_BUFFER_DURATION (buf);
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return gst_pad_push (parse->srcpad, buf);
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}
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static GstFlowReturn
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vorbis_parse_drain_queue_prematurely (GstVorbisParse * parse)
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{
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GstFlowReturn ret = GST_FLOW_OK;
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gint64 granulepos = MAX (parse->prev_granulepos, 0);
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/* got an EOS event, make sure to push out any buffers that were in the queue
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* -- won't normally be the case, but this catches the
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* didn't-get-a-granulepos-on-the-last-packet case. Assuming a continuous
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* stream. */
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/* if we got EOS before any buffers came, go ahead and push the other events
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* first */
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vorbis_parse_drain_event_queue (parse);
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while (!g_queue_is_empty (parse->buffer_queue)) {
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GstBuffer *buf;
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buf = GST_BUFFER_CAST (g_queue_pop_head (parse->buffer_queue));
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granulepos += GST_BUFFER_OFFSET (buf);
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ret = vorbis_parse_push_buffer (parse, buf, granulepos);
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if (ret != GST_FLOW_OK)
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goto done;
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}
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parse->prev_granulepos = granulepos;
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done:
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return ret;
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}
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static GstFlowReturn
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vorbis_parse_drain_queue (GstVorbisParse * parse, gint64 granulepos)
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{
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GstFlowReturn ret = GST_FLOW_OK;
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GList *walk;
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gint64 cur = granulepos;
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gint64 gp;
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for (walk = parse->buffer_queue->head; walk; walk = walk->next)
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cur -= GST_BUFFER_OFFSET (walk->data);
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if (parse->prev_granulepos != -1)
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cur = MAX (cur, parse->prev_granulepos);
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while (!g_queue_is_empty (parse->buffer_queue)) {
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GstBuffer *buf;
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buf = GST_BUFFER_CAST (g_queue_pop_head (parse->buffer_queue));
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cur += GST_BUFFER_OFFSET (buf);
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gp = CLAMP (cur, 0, granulepos);
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ret = vorbis_parse_push_buffer (parse, buf, gp);
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if (ret != GST_FLOW_OK)
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goto done;
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}
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parse->prev_granulepos = granulepos;
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done:
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return ret;
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}
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static GstFlowReturn
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vorbis_parse_queue_buffer (GstVorbisParse * parse, GstBuffer * buf)
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{
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GstFlowReturn ret = GST_FLOW_OK;
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long blocksize;
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ogg_packet packet;
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GstMapInfo map;
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buf = gst_buffer_make_writable (buf);
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gst_buffer_map (buf, &map, GST_MAP_READ);
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packet.packet = map.data;
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packet.bytes = map.size;
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GST_DEBUG ("%p, %" G_GSIZE_FORMAT, map.data, map.size);
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packet.granulepos = GST_BUFFER_OFFSET_END (buf);
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packet.packetno = parse->packetno + parse->buffer_queue->length;
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packet.e_o_s = 0;
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blocksize = vorbis_packet_blocksize (&parse->vi, &packet);
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gst_buffer_unmap (buf, &map);
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/* temporarily store the sample count in OFFSET -- we overwrite this later */
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if (parse->prev_blocksize < 0)
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GST_BUFFER_OFFSET (buf) = 0;
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else
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GST_BUFFER_OFFSET (buf) = (blocksize + parse->prev_blocksize) / 4;
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parse->prev_blocksize = blocksize;
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g_queue_push_tail (parse->buffer_queue, buf);
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if (GST_BUFFER_OFFSET_END_IS_VALID (buf))
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ret = vorbis_parse_drain_queue (parse, GST_BUFFER_OFFSET_END (buf));
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return ret;
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}
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static GstFlowReturn
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vorbis_parse_parse_packet (GstVorbisParse * parse, GstBuffer * buf)
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{
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GstFlowReturn ret;
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GstMapInfo map;
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gboolean have_header;
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parse->packetno++;
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have_header = FALSE;
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gst_buffer_map (buf, &map, GST_MAP_READ);
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if (map.size >= 1) {
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if (map.data[0] & 1)
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have_header = TRUE;
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}
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gst_buffer_unmap (buf, &map);
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if (have_header) {
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if (!parse->streamheader_sent) {
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/* we need to collect the headers still */
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/* so put it on the streamheader list and return */
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parse->streamheader = g_list_append (parse->streamheader, buf);
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}
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ret = GST_FLOW_OK;
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} else {
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/* data packet, push the headers we collected before */
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if (!parse->streamheader_sent) {
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if (!vorbis_parse_push_headers (parse)) {
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ret = GST_FLOW_ERROR;
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goto out;
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}
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parse->streamheader_sent = TRUE;
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}
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ret = vorbis_parse_queue_buffer (parse, buf);
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}
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out:
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return ret;
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}
|
|
|
|
static GstFlowReturn
|
|
vorbis_parse_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
|
|
{
|
|
GstVorbisParseClass *klass;
|
|
GstVorbisParse *parse;
|
|
|
|
parse = GST_VORBIS_PARSE (parent);
|
|
klass = GST_VORBIS_PARSE_CLASS (G_OBJECT_GET_CLASS (parse));
|
|
|
|
g_assert (klass->parse_packet != NULL);
|
|
|
|
return klass->parse_packet (parse, buffer);
|
|
}
|
|
|
|
static gboolean
|
|
vorbis_parse_queue_event (GstVorbisParse * parse, GstEvent * event)
|
|
{
|
|
GstFlowReturn ret = TRUE;
|
|
|
|
g_queue_push_tail (parse->event_queue, event);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
vorbis_parse_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
|
|
{
|
|
gboolean ret;
|
|
GstVorbisParse *parse;
|
|
|
|
parse = GST_VORBIS_PARSE (parent);
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_FLUSH_STOP:
|
|
vorbis_parse_clear_queue (parse);
|
|
parse->prev_granulepos = -1;
|
|
parse->prev_blocksize = -1;
|
|
ret = gst_pad_event_default (pad, parent, event);
|
|
break;
|
|
case GST_EVENT_EOS:
|
|
vorbis_parse_drain_queue_prematurely (parse);
|
|
ret = gst_pad_event_default (pad, parent, event);
|
|
break;
|
|
default:
|
|
if (!parse->streamheader_sent && GST_EVENT_IS_SERIALIZED (event)
|
|
&& GST_EVENT_TYPE (event) > GST_EVENT_CAPS)
|
|
ret = vorbis_parse_queue_event (parse, event);
|
|
else
|
|
ret = gst_pad_event_default (pad, parent, event);
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
vorbis_parse_convert (GstPad * pad,
|
|
GstFormat src_format, gint64 src_value,
|
|
GstFormat * dest_format, gint64 * dest_value)
|
|
{
|
|
gboolean res = TRUE;
|
|
GstVorbisParse *parse;
|
|
guint64 scale = 1;
|
|
|
|
parse = GST_VORBIS_PARSE (GST_PAD_PARENT (pad));
|
|
|
|
/* fixme: assumes atomic access to lots of instance variables modified from
|
|
* the streaming thread, including 64-bit variables */
|
|
|
|
if (parse->packetno < 4)
|
|
return FALSE;
|
|
|
|
if (src_format == *dest_format) {
|
|
*dest_value = src_value;
|
|
return TRUE;
|
|
}
|
|
|
|
if (parse->sinkpad == pad &&
|
|
(src_format == GST_FORMAT_BYTES || *dest_format == GST_FORMAT_BYTES))
|
|
return FALSE;
|
|
|
|
switch (src_format) {
|
|
case GST_FORMAT_TIME:
|
|
switch (*dest_format) {
|
|
case GST_FORMAT_BYTES:
|
|
scale = sizeof (float) * parse->vi.channels;
|
|
case GST_FORMAT_DEFAULT:
|
|
*dest_value =
|
|
scale * gst_util_uint64_scale_int (src_value, parse->vi.rate,
|
|
GST_SECOND);
|
|
break;
|
|
default:
|
|
res = FALSE;
|
|
}
|
|
break;
|
|
case GST_FORMAT_DEFAULT:
|
|
switch (*dest_format) {
|
|
case GST_FORMAT_BYTES:
|
|
*dest_value = src_value * sizeof (float) * parse->vi.channels;
|
|
break;
|
|
case GST_FORMAT_TIME:
|
|
*dest_value =
|
|
gst_util_uint64_scale_int (src_value, GST_SECOND, parse->vi.rate);
|
|
break;
|
|
default:
|
|
res = FALSE;
|
|
}
|
|
break;
|
|
case GST_FORMAT_BYTES:
|
|
switch (*dest_format) {
|
|
case GST_FORMAT_DEFAULT:
|
|
*dest_value = src_value / (sizeof (float) * parse->vi.channels);
|
|
break;
|
|
case GST_FORMAT_TIME:
|
|
*dest_value = gst_util_uint64_scale_int (src_value, GST_SECOND,
|
|
parse->vi.rate * sizeof (float) * parse->vi.channels);
|
|
break;
|
|
default:
|
|
res = FALSE;
|
|
}
|
|
break;
|
|
default:
|
|
res = FALSE;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static gboolean
|
|
vorbis_parse_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
|
|
{
|
|
gint64 granulepos;
|
|
GstVorbisParse *parse;
|
|
gboolean res = FALSE;
|
|
|
|
parse = GST_VORBIS_PARSE (parent);
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
case GST_QUERY_POSITION:
|
|
{
|
|
GstFormat format;
|
|
gint64 value;
|
|
|
|
granulepos = parse->prev_granulepos;
|
|
|
|
gst_query_parse_position (query, &format, NULL);
|
|
|
|
/* and convert to the final format */
|
|
if (!(res =
|
|
vorbis_parse_convert (pad, GST_FORMAT_DEFAULT, granulepos,
|
|
&format, &value)))
|
|
goto error;
|
|
|
|
/* fixme: support segments
|
|
value = (value - parse->segment_start) + parse->segment_time;
|
|
*/
|
|
|
|
gst_query_set_position (query, format, value);
|
|
|
|
GST_LOG_OBJECT (parse, "query %p: peer returned granulepos: %"
|
|
G_GUINT64_FORMAT " - we return %" G_GUINT64_FORMAT " (format %u)",
|
|
query, granulepos, value, format);
|
|
|
|
break;
|
|
}
|
|
case GST_QUERY_DURATION:
|
|
{
|
|
/* fixme: not threadsafe */
|
|
/* query peer for total length */
|
|
if (!gst_pad_is_linked (parse->sinkpad)) {
|
|
GST_WARNING_OBJECT (parse, "sink pad %" GST_PTR_FORMAT " is not linked",
|
|
parse->sinkpad);
|
|
goto error;
|
|
}
|
|
if (!(res = gst_pad_peer_query (parse->sinkpad, query)))
|
|
goto error;
|
|
break;
|
|
}
|
|
case GST_QUERY_CONVERT:
|
|
{
|
|
GstFormat src_fmt, dest_fmt;
|
|
gint64 src_val, dest_val;
|
|
|
|
gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
|
|
if (!(res =
|
|
vorbis_parse_convert (pad, src_fmt, src_val, &dest_fmt,
|
|
&dest_val)))
|
|
goto error;
|
|
gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
|
|
break;
|
|
}
|
|
default:
|
|
res = gst_pad_query_default (pad, parent, query);
|
|
break;
|
|
}
|
|
return res;
|
|
|
|
error:
|
|
{
|
|
GST_WARNING_OBJECT (parse, "error handling query");
|
|
return res;
|
|
}
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
vorbis_parse_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstVorbisParse *parse = GST_VORBIS_PARSE (element);
|
|
GstStateChangeReturn ret;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
vorbis_info_init (&parse->vi);
|
|
vorbis_comment_init (&parse->vc);
|
|
parse->prev_granulepos = -1;
|
|
parse->prev_blocksize = -1;
|
|
parse->packetno = 0;
|
|
parse->streamheader_sent = FALSE;
|
|
parse->buffer_queue = g_queue_new ();
|
|
parse->event_queue = g_queue_new ();
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
vorbis_info_clear (&parse->vi);
|
|
vorbis_comment_clear (&parse->vc);
|
|
vorbis_parse_clear_queue (parse);
|
|
g_queue_free (parse->buffer_queue);
|
|
parse->buffer_queue = NULL;
|
|
g_queue_free (parse->event_queue);
|
|
parse->event_queue = NULL;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|