mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-05 07:56:35 +00:00
154 lines
5.5 KiB
C
154 lines
5.5 KiB
C
/* MPEG-PS muxer plugin for GStreamer
|
|
* Copyright 2008 Lin YANG <oxcsnicho@gmail.com>
|
|
*
|
|
* 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., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, 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 __PSMUX_COMMON_H__
|
|
#define __PSMUX_COMMON_H__
|
|
|
|
#include <glib.h>
|
|
#include <gst/gst.h>
|
|
#include "bits.h" /* from VLC */
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define PSMUX_PACK_HDR_FREQ 30
|
|
#define PSMUX_SYS_HDR_FREQ 300
|
|
#define PSMUX_PSM_FREQ 300
|
|
|
|
#define PSMUX_PES_MAX_PAYLOAD 65500 /* from VLC */
|
|
#define PSMUX_PES_MAX_HDR_LEN 30
|
|
#define PSMUX_MAX_PACKET_LEN (PSMUX_PES_MAX_PAYLOAD + PSMUX_PES_MAX_HDR_LEN)
|
|
|
|
#define CLOCKBASE 90000
|
|
#define PSMUX_PACK_HDR_INTERVAL ( 0.7 * CLOCKBASE) /* interval to update pack header. 0.7 sec */
|
|
#define PSMUX_BITRATE_CALC_INTERVAL CLOCKBASE /* interval to update bitrate in pack header. 1 sec */
|
|
|
|
#define PSMUX_PES_BITRATE_DEFAULT 1000 /* Default bit_rate to write in the first pack header */
|
|
|
|
#define PSMUX_START_CODE_PREFIX 0x01
|
|
|
|
/* stream_id */
|
|
#define PSMUX_PACK_HEADER 0xba
|
|
#define PSMUX_SYSTEM_HEADER 0xbb
|
|
#define PSMUX_PROGRAM_STREAM_MAP 0xbc
|
|
#define PSMUX_PRIVATE_STREAM_1 0xbd
|
|
#define PSMUX_PADDING_STREAM 0xbe
|
|
#define PSMUX_PRIVATE_STREAM_2 0xbf
|
|
#define PSMUX_ECM 0xb0
|
|
#define PSMUX_EMM 0xb1
|
|
#define PSMUX_PROGRAM_STREAM_DIRECTORY 0xff
|
|
#define PSMUX_DSMCC_STREAM 0xf2
|
|
#define PSMUX_ITU_T_H222_1_TYPE_E 0xf8
|
|
#define PSMUX_EXTENDED_STREAM 0xfd
|
|
#define PSMUX_PROGRAM_END 0xb9
|
|
|
|
#define PSMUX_MIN_ES_DESC_LEN 8
|
|
|
|
/* Frequency for PCR representation */
|
|
#define PSMUX_SYS_CLOCK_FREQ (27000000L)
|
|
/* Frequency for PTS values */
|
|
#define PSMUX_CLOCK_FREQ (PSMUX_SYS_CLOCK_FREQ / 300)
|
|
|
|
/* TODO: flags? looks that we don't need these */
|
|
#define PSMUX_PACKET_FLAG_NONE (0)
|
|
#define PSMUX_PACKET_FLAG_ADAPTATION (1 << 0)
|
|
#define PSMUX_PACKET_FLAG_DISCONT (1 << 1)
|
|
#define PSMUX_PACKET_FLAG_RANDOM_ACCESS (1 << 2)
|
|
#define PSMUX_PACKET_FLAG_PRIORITY (1 << 3)
|
|
#define PSMUX_PACKET_FLAG_WRITE_PCR (1 << 4)
|
|
#define PSMUX_PACKET_FLAG_WRITE_OPCR (1 << 5)
|
|
#define PSMUX_PACKET_FLAG_WRITE_SPLICE (1 << 6)
|
|
#define PSMUX_PACKET_FLAG_WRITE_ADAPT_EXT (1 << 7)
|
|
|
|
/* PES stream specific flags */
|
|
#define PSMUX_PACKET_FLAG_PES_FULL_HEADER (1 << 8)
|
|
#define PSMUX_PACKET_FLAG_PES_WRITE_PTS (1 << 9)
|
|
#define PSMUX_PACKET_FLAG_PES_WRITE_PTS_DTS (1 << 10)
|
|
#define PSMUX_PACKET_FLAG_PES_WRITE_ESCR (1 << 11)
|
|
#define PSMUX_PACKET_FLAG_PES_EXT_STREAMID (1 << 12)
|
|
#define PSMUX_PACKET_FLAG_PES_DATA_ALIGN (1 << 13)
|
|
|
|
typedef struct PsMuxPacketInfo PsMuxPacketInfo;
|
|
typedef struct PsMuxProgram PsMuxProgram;
|
|
typedef struct PsMuxStream PsMuxStream;
|
|
typedef struct PsMuxStreamIdInfo PsMuxStreamIdInfo;
|
|
typedef struct PsMux PsMux;
|
|
typedef enum PsMuxStreamType PsMuxStreamType;
|
|
typedef struct PsMuxStreamBuffer PsMuxStreamBuffer;
|
|
|
|
/* clearup and see if we need this anymore */
|
|
struct PsMuxPacketInfo {
|
|
guint32 flags;
|
|
};
|
|
|
|
/* bitstream writers */
|
|
static inline void
|
|
psmux_put16 (guint8 **pos, guint16 val)
|
|
{
|
|
*(*pos)++ = (val >> 8) & 0xff;
|
|
*(*pos)++ = val & 0xff;
|
|
}
|
|
|
|
static inline void
|
|
psmux_put32 (guint8 **pos, guint32 val)
|
|
{
|
|
*(*pos)++ = (val >> 24) & 0xff;
|
|
*(*pos)++ = (val >> 16) & 0xff;
|
|
*(*pos)++ = (val >> 8) & 0xff;
|
|
*(*pos)++ = val & 0xff;
|
|
}
|
|
|
|
static inline void
|
|
psmux_put_ts (guint8 **pos, guint8 id, gint64 ts)
|
|
{
|
|
/* 1: 4 bit id value | TS [32..30] | marker_bit */
|
|
*(*pos)++ = ((id << 4) | ((ts >> 29) & 0x0E) | 0x01) & 0xff;
|
|
/* 2, 3: TS[29..15] | marker_bit */
|
|
psmux_put16 (pos, ((ts >> 14) & 0xfffe) | 0x01);
|
|
/* 4, 5: TS[14..0] | marker_bit */
|
|
psmux_put16 (pos, ((ts << 1) & 0xfffe) | 0x01);
|
|
}
|
|
|
|
G_END_DECLS
|
|
|
|
#endif
|