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101 lines
2.5 KiB
C
101 lines
2.5 KiB
C
/* Icecast
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*
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* This program is distributed under the GNU General Public License, version 2.
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* A copy of this license is included with this source.
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*
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* Copyright 2000-2004, Jack Moffitt <jack@xiph.org,
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* Michael Smith <msmith@xiph.org>,
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* oddsock <oddsock@xiph.org>,
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* Karl Heyes <karl@xiph.org>
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* and others (see AUTHORS for details).
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*/
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/* Ogg codec handler for skeleton logical streams */
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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 <stdlib.h>
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#include <string.h>
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#include <ogg/ogg.h>
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typedef struct source_tag source_t;
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#include "refbuf.h"
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#include "format_ogg.h"
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#include "format_skeleton.h"
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#include "client.h"
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#include "stats.h"
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#define CATMODULE "format-skeleton"
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#include "logging.h"
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static void skeleton_codec_free (ogg_state_t *ogg_info, ogg_codec_t *codec)
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{
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ICECAST_LOG_DEBUG("freeing skeleton codec");
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ogg_stream_clear (&codec->os);
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free (codec);
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}
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/* skeleton pages are not rebuilt, so here we just for headers and then
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* pass them straight through to the the queue
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*/
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static refbuf_t *process_skeleton_page (ogg_state_t *ogg_info, ogg_codec_t *codec, ogg_page *page)
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{
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ogg_packet packet;
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if (ogg_stream_pagein (&codec->os, page) < 0)
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{
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ogg_info->error = 1;
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return NULL;
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}
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while (ogg_stream_packetout (&codec->os, &packet) > 0)
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{
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codec->headers++;
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}
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/* all skeleon packets are headers */
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format_ogg_attach_header (ogg_info, page);
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return NULL;
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}
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/* Check if specified BOS page is the start of a skeleton stream and
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* if so, create a codec structure for handling it
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*/
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ogg_codec_t *initial_skeleton_page (format_plugin_t *plugin, ogg_page *page)
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{
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ogg_state_t *ogg_info = plugin->_state;
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ogg_codec_t *codec = calloc (1, sizeof (ogg_codec_t));
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ogg_packet packet;
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ogg_stream_init (&codec->os, ogg_page_serialno (page));
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ogg_stream_pagein (&codec->os, page);
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ogg_stream_packetout (&codec->os, &packet);
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ICECAST_LOG_DEBUG("checking for skeleton codec");
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if ((packet.bytes<8) || memcmp(packet.packet, "fishead\0", 8))
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{
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ogg_stream_clear (&codec->os);
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free (codec);
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return NULL;
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}
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ICECAST_LOG_INFO("seen initial skeleton header");
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codec->process_page = process_skeleton_page;
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codec->codec_free = skeleton_codec_free;
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codec->headers = 1;
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codec->name = "Skeleton";
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format_ogg_attach_header (ogg_info, page);
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return codec;
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}
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