gstreamer/gst/isomp4/gstqtmux.h
2012-04-17 15:14:27 +02:00

230 lines
6.8 KiB
C

/* Quicktime muxer plugin for GStreamer
* Copyright (C) 2008-2010 Thiago Santos <thiagoss@embedded.ufcg.edu.br>
*
* 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.
*/
/*
* Unless otherwise indicated, Source Code is licensed under MIT license.
* See further explanation attached in License Statement (distributed in the file
* LICENSE).
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __GST_QT_MUX_H__
#define __GST_QT_MUX_H__
#include <gst/gst.h>
#include <gst/base/gstcollectpads.h>
#include "fourcc.h"
#include "atoms.h"
#include "atomsrecovery.h"
#include "gstqtmuxmap.h"
G_BEGIN_DECLS
#define GST_TYPE_QT_MUX (gst_qt_mux_get_type())
#define GST_QT_MUX(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_QT_MUX, GstQTMux))
#define GST_QT_MUX_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_QT_MUX, GstQTMux))
#define GST_IS_QT_MUX(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_QT_MUX))
#define GST_IS_QT_MUX_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_QT_MUX))
#define GST_QT_MUX_CAST(obj) ((GstQTMux*)(obj))
typedef struct _GstQTMux GstQTMux;
typedef struct _GstQTMuxClass GstQTMuxClass;
typedef struct _GstQTPad GstQTPad;
/*
* GstQTPadPrepareBufferFunc
*
* Receives a buffer (takes ref) and returns a new buffer that should
* replace the passed one.
*
* Useful for when the pad/datatype needs some manipulation before
* being muxed. (Originally added for image/x-jpc support, for which buffers
* need to be wrapped into a isom box)
*/
typedef GstBuffer * (*GstQTPadPrepareBufferFunc) (GstQTPad * pad,
GstBuffer * buf, GstQTMux * qtmux);
#define QTMUX_NO_OF_TS 10
struct _GstQTPad
{
GstCollectData collect; /* we extend the CollectData */
/* fourcc id of stream */
guint32 fourcc;
/* whether using format that have out of order buffers */
gboolean is_out_of_order;
/* whether upstream provides valid PTS data */
gboolean have_dts;
/* if not 0, track with constant sized samples, e.g. raw audio */
guint sample_size;
/* make sync table entry */
gboolean sync;
/* bitrates */
guint32 avg_bitrate, max_bitrate;
/* for avg bitrate calculation */
guint64 total_bytes;
guint64 total_duration;
GstBuffer *last_buf;
/* dts of last_buf */
GstClockTime last_dts;
/* store the first timestamp for comparing with other streams and
* know if there are late streams */
GstClockTime first_ts;
GstClockTime ts_entries[QTMUX_NO_OF_TS + 2];
guint ts_n_entries;
GstBuffer *buf_entries[QTMUX_NO_OF_TS + 2];
guint buf_head;
guint buf_tail;
/* all the atom and chunk book-keeping is delegated here
* unowned/uncounted reference, parent MOOV owns */
AtomTRAK *trak;
/* fragmented support */
/* meta data book-keeping delegated here */
AtomTRAF *traf;
/* fragment buffers */
ATOM_ARRAY (GstBuffer *) fragment_buffers;
/* running fragment duration */
gint64 fragment_duration;
/* optional fragment index book-keeping */
AtomTFRA *tfra;
/* if nothing is set, it won't be called */
GstQTPadPrepareBufferFunc prepare_buf_func;
gboolean (*set_caps) (GstPad * pad, GstCaps * caps);
};
typedef enum _GstQTMuxState
{
GST_QT_MUX_STATE_NONE,
GST_QT_MUX_STATE_STARTED,
GST_QT_MUX_STATE_DATA,
GST_QT_MUX_STATE_EOS
} GstQTMuxState;
struct _GstQTMux
{
GstElement element;
GstPad *srcpad;
GstCollectPads *collect;
GSList *sinkpads;
/* state */
GstQTMuxState state;
/* size of header (prefix, atoms (ftyp, mdat)) */
guint64 header_size;
/* accumulated size of raw media data (a priori not including mdat header) */
guint64 mdat_size;
/* position of mdat atom (for later updating) */
guint64 mdat_pos;
/* keep track of the largest chunk to fine-tune brands */
GstClockTime longest_chunk;
/* atom helper objects */
AtomsContext *context;
AtomFTYP *ftyp;
AtomMOOV *moov;
GSList *extra_atoms; /* list of extra top-level atoms (e.g. UUID for xmp)
* Stored as AtomInfo structs */
/* fragmented file index */
AtomMFRA *mfra;
/* fast start */
FILE *fast_start_file;
/* moov recovery */
FILE *moov_recov_file;
/* fragment sequence */
guint32 fragment_sequence;
/* properties */
guint32 timescale;
guint32 trak_timescale;
AtomsTreeFlavor flavor;
gboolean fast_start;
gboolean guess_pts;
gint dts_method;
gchar *fast_start_file_path;
gchar *moov_recov_file_path;
guint32 fragment_duration;
gboolean streamable;
/* for request pad naming */
guint video_pads, audio_pads;
};
struct _GstQTMuxClass
{
GstElementClass parent_class;
GstQTMuxFormat format;
};
/* type register helper struct */
typedef struct _GstQTMuxClassParams
{
GstQTMuxFormatProp *prop;
GstCaps *src_caps;
GstCaps *video_sink_caps;
GstCaps *audio_sink_caps;
} GstQTMuxClassParams;
#define GST_QT_MUX_PARAMS_QDATA g_quark_from_static_string("qt-mux-params")
GType gst_qt_mux_get_type (void);
gboolean gst_qt_mux_register (GstPlugin * plugin);
/* FIXME: ideally classification tag should be added and
* registered in gstreamer core gsttaglist
*
* this tag is a string in the format: entityfourcc://table_num/content
* FIXME Shouldn't we add a field for 'language'?
*/
#define GST_TAG_3GP_CLASSIFICATION "classification"
G_END_DECLS
#endif /* __GST_QT_MUX_H__ */