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141 lines
4.2 KiB
C
141 lines
4.2 KiB
C
/* OGG muxer plugin for GStreamer
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* Copyright (C) 2004 Wim Taymans <wim@fluendo.com>
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* Copyright (C) 2006 Thomas Vander Stichele <thomas at apestaart dot org>
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_OGG_MUX_H__
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#define __GST_OGGEMUX_H__
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#include <ogg/ogg.h>
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#include <gst/gst.h>
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#include <gst/base/gstcollectpads.h>
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G_BEGIN_DECLS
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#define GST_TYPE_OGG_MUX (gst_ogg_mux_get_type())
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#define GST_OGG_MUX(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OGG_MUX, GstOggMux))
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#define GST_OGG_MUX_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OGG_MUX, GstOggMux))
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#define GST_IS_OGG_MUX(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OGG_MUX))
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#define GST_IS_OGG_MUX_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OGG_MUX))
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typedef struct _GstOggMux GstOggMux;
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typedef struct _GstOggMuxClass GstOggMuxClass;
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typedef enum
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{
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GST_OGG_PAD_STATE_CONTROL = 0,
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GST_OGG_PAD_STATE_DATA = 1
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}
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GstOggPadState;
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/* all information needed for one ogg stream */
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typedef struct
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{
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GstCollectData collect; /* we extend the CollectData */
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/* These two buffers make a very simple queue - they enter as 'next_buffer'
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* and (usually) leave as 'buffer', except at EOS, when buffer will be NULL */
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GstBuffer *buffer; /* the first waiting buffer for the pad */
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GstBuffer *next_buffer; /* the second waiting buffer for the pad */
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gint serial;
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ogg_stream_state stream;
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gint64 packetno; /* number of next packet */
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gint64 pageno; /* number of next page */
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guint64 duration; /* duration of current page */
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gboolean eos;
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gint64 offset;
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GstClockTime timestamp; /* timestamp of the first packet on the next
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* page to be dequeued */
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GstClockTime timestamp_end; /* end timestamp of last complete packet on
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the next page to be dequeued */
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GstClockTime gp_time; /* time corresponding to the gp value of the
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last complete packet on the next page to be
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dequeued */
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GstOggPadState state; /* state of the pad */
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GList *headers;
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GQueue *pagebuffers; /* List of pages in buffers ready for pushing */
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gboolean new_page; /* starting a new page */
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gboolean first_delta; /* was the first packet in the page a delta */
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gboolean prev_delta; /* was the previous buffer a delta frame */
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GstPadEventFunction collect_event;
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gboolean always_flush_page;
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}
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GstOggPadData;
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/**
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* GstOggMux:
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*
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* The ogg muxer object structure.
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*/
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struct _GstOggMux
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{
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GstElement element;
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/* source pad */
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GstPad *srcpad;
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/* sinkpads */
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GstCollectPads *collect;
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/* number of pads which have not received EOS */
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gint active_pads;
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/* the pad we are currently using to fill a page */
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GstOggPadData *pulling;
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/* next timestamp for the page */
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GstClockTime next_ts;
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/* Last timestamp actually output on src pad */
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GstClockTime last_ts;
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/* offset in stream */
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guint64 offset;
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/* need_headers */
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gboolean need_headers;
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guint64 max_delay;
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guint64 max_page_delay;
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GstOggPadData *delta_pad; /* when a delta frame is detected on a stream, we mark
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pages as delta frames up to the page that has the
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keyframe */
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};
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struct _GstOggMuxClass
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{
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GstElementClass parent_class;
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};
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GType gst_ogg_mux_get_type (void);
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gboolean gst_ogg_mux_plugin_init (GstPlugin * plugin);
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G_END_DECLS
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#endif /* __GST_OGG_MUX_H__ */
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