gstreamer/gst/mpegtsmux/mpegtsmux.h
Jan Schmidt 9a26173a57 Rewrite M2TS packet output
Make sure we only write the bottom 30 bits of the PCR to the m2ts header.
Don't use floating point computation for it, and remove weird bit fiddling
that messes up the PCR in a way I can't find any
justification/documentation for.

Don't accidentally lose PCR packets from the output.

Fix the description for the m2ts-mode property so it's clear it's a flag,
and which setting does what.

Fixes: #611061 #644429
Partially fixes: #645006
2011-03-26 16:18:22 +11:00

188 lines
6.4 KiB
C

/*
* Copyright 2006, 2007, 2008, 2009, 2010 Fluendo S.A.
* Authors: Jan Schmidt <jan@fluendo.com>
* Kapil Agrawal <kapil@fluendo.com>
* Julien Moutte <julien@fluendo.com>
*
* This library is licensed under 4 different licenses and you
* can choose to use it under the terms of any one of them. The
* four licenses are the MPL 1.1, the LGPL, the GPL and the MIT
* license.
*
* MPL:
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/.
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
* License for the specific language governing rights and limitations
* under the License.
*
* LGPL:
*
* 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.
*
* GPL:
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* MIT:
*
* 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 __MPEGTSMUX_H__
#define __MPEGTSMUX_H__
#include <gst/gst.h>
#include <gst/base/gstcollectpads.h>
#include <gst/base/gstadapter.h>
G_BEGIN_DECLS
#include <tsmux/tsmux.h>
#define GST_TYPE_MPEG_TSMUX (mpegtsmux_get_type())
#define GST_MPEG_TSMUX(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_MPEG_TSMUX, MpegTsMux))
typedef struct MpegTsMux MpegTsMux;
typedef struct MpegTsMuxClass MpegTsMuxClass;
typedef struct MpegTsPadData MpegTsPadData;
typedef GstBuffer * (*MpegTsPadDataPrepareFunction) (GstBuffer * buf,
MpegTsPadData * data, MpegTsMux * mux);
typedef void (*MpegTsPadDataFreePrepareDataFunction) (gpointer prepare_data);
struct MpegTsMux {
GstElement parent;
GstPad *srcpad;
GstCollectPads *collect;
TsMux *tsmux;
TsMuxProgram **programs;
GstStructure *prog_map;
gboolean first;
GstFlowReturn last_flow_ret;
GstAdapter *adapter;
gint64 previous_pcr;
gboolean m2ts_mode;
gboolean first_pcr;
guint pat_interval;
guint pmt_interval;
GstClockTime last_ts;
gboolean is_delta;
GList *streamheader;
gboolean streamheader_sent;
};
struct MpegTsMuxClass {
GstElementClass parent_class;
};
#define MPEG_TS_PAD_DATA(data) ((MpegTsPadData *)(data))
struct MpegTsPadData {
GstCollectData collect; /* Parent */
gint pid;
TsMuxStream *stream;
GstBuffer *queued_buf; /* Currently pulled buffer */
GstClockTime cur_ts; /* Adjusted TS for the pulled buffer */
GstClockTime last_ts; /* Most recent valid TS for this stream */
GstBuffer * codec_data; /* Optional codec data available in the caps */
gpointer prepare_data; /* Opaque data pointer to a structure used by the
prepare function */
MpegTsPadDataPrepareFunction prepare_func; /* Handler to prepare input data */
MpegTsPadDataFreePrepareDataFunction free_func; /* Handler to free the private data */
gboolean eos;
gint prog_id; /* The program id to which it is attached to (not program pid) */
TsMuxProgram *prog; /* The program to which this stream belongs to */
};
GType mpegtsmux_get_type (void);
#define CLOCK_BASE 9LL
#define CLOCK_FREQ (CLOCK_BASE * 10000) /* 90 kHz PTS clock */
#define CLOCK_FREQ_SCR (CLOCK_FREQ * 300) /* 27 MHz SCR clock */
#define MPEGTIME_TO_GSTTIME(time) (gst_util_uint64_scale ((time), \
GST_MSECOND/10, CLOCK_BASE))
#define GSTTIME_TO_MPEGTIME(time) (gst_util_uint64_scale ((time), \
CLOCK_BASE, GST_MSECOND/10))
/* 27 MHz SCR conversions: */
#define MPEG_SYS_TIME_TO_GSTTIME(time) (gst_util_uint64_scale ((time), \
GST_USECOND, CLOCK_FREQ_SCR / 1000000))
#define GSTTIME_TO_MPEG_SYS_TIME(time) (gst_util_uint64_scale ((time), \
CLOCK_FREQ_SCR / 1000000, GST_USECOND))
#define NORMAL_TS_PACKET_LENGTH 188
#define M2TS_PACKET_LENGTH 192
#define MAX_PROG_NUMBER 32
#define DEFAULT_PROG_ID 0
G_END_DECLS
#endif