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154 lines
5.5 KiB
C
154 lines
5.5 KiB
C
/* MPEG-PS muxer plugin for GStreamer
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* Copyright 2008 Lin YANG <oxcsnicho@gmail.com>
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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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/*
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* Unless otherwise indicated, Source Code is licensed under MIT license.
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* See further explanation attached in License Statement (distributed in the file
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* LICENSE).
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is furnished to do
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* so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef __PSMUX_COMMON_H__
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#define __PSMUX_COMMON_H__
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#include <glib.h>
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#include <gst/gst.h>
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#include "bits.h" /* from VLC */
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G_BEGIN_DECLS
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#define PSMUX_PACK_HDR_FREQ 30
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#define PSMUX_SYS_HDR_FREQ 300
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#define PSMUX_PSM_FREQ 300
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#define PSMUX_PES_MAX_PAYLOAD 65500 /* from VLC */
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#define PSMUX_PES_MAX_HDR_LEN 30
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#define PSMUX_MAX_PACKET_LEN (PSMUX_PES_MAX_PAYLOAD + PSMUX_PES_MAX_HDR_LEN)
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#define CLOCKBASE 90000
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#define PSMUX_PACK_HDR_INTERVAL ( 0.7 * CLOCKBASE) /* interval to update pack header. 0.7 sec */
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#define PSMUX_BITRATE_CALC_INTERVAL CLOCKBASE /* interval to update bitrate in pack header. 1 sec */
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#define PSMUX_PES_BITRATE_DEFAULT 1000 /* Default bit_rate to write in the first pack header */
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#define PSMUX_START_CODE_PREFIX 0x01
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/* stream_id */
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#define PSMUX_PACK_HEADER 0xba
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#define PSMUX_SYSTEM_HEADER 0xbb
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#define PSMUX_PROGRAM_STREAM_MAP 0xbc
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#define PSMUX_PRIVATE_STREAM_1 0xbd
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#define PSMUX_PADDING_STREAM 0xbe
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#define PSMUX_PRIVATE_STREAM_2 0xbf
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#define PSMUX_ECM 0xb0
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#define PSMUX_EMM 0xb1
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#define PSMUX_PROGRAM_STREAM_DIRECTORY 0xff
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#define PSMUX_DSMCC_STREAM 0xf2
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#define PSMUX_ITU_T_H222_1_TYPE_E 0xf8
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#define PSMUX_EXTENDED_STREAM 0xfd
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#define PSMUX_PROGRAM_END 0xb9
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#define PSMUX_MIN_ES_DESC_LEN 8
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/* Frequency for PCR representation */
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#define PSMUX_SYS_CLOCK_FREQ (27000000L)
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/* Frequency for PTS values */
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#define PSMUX_CLOCK_FREQ (PSMUX_SYS_CLOCK_FREQ / 300)
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/* TODO: flags? looks that we don't need these */
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#define PSMUX_PACKET_FLAG_NONE (0)
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#define PSMUX_PACKET_FLAG_ADAPTATION (1 << 0)
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#define PSMUX_PACKET_FLAG_DISCONT (1 << 1)
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#define PSMUX_PACKET_FLAG_RANDOM_ACCESS (1 << 2)
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#define PSMUX_PACKET_FLAG_PRIORITY (1 << 3)
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#define PSMUX_PACKET_FLAG_WRITE_PCR (1 << 4)
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#define PSMUX_PACKET_FLAG_WRITE_OPCR (1 << 5)
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#define PSMUX_PACKET_FLAG_WRITE_SPLICE (1 << 6)
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#define PSMUX_PACKET_FLAG_WRITE_ADAPT_EXT (1 << 7)
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/* PES stream specific flags */
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#define PSMUX_PACKET_FLAG_PES_FULL_HEADER (1 << 8)
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#define PSMUX_PACKET_FLAG_PES_WRITE_PTS (1 << 9)
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#define PSMUX_PACKET_FLAG_PES_WRITE_PTS_DTS (1 << 10)
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#define PSMUX_PACKET_FLAG_PES_WRITE_ESCR (1 << 11)
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#define PSMUX_PACKET_FLAG_PES_EXT_STREAMID (1 << 12)
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#define PSMUX_PACKET_FLAG_PES_DATA_ALIGN (1 << 13)
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typedef struct PsMuxPacketInfo PsMuxPacketInfo;
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typedef struct PsMuxProgram PsMuxProgram;
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typedef struct PsMuxStream PsMuxStream;
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typedef struct PsMuxStreamIdInfo PsMuxStreamIdInfo;
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typedef struct PsMux PsMux;
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typedef enum PsMuxStreamType PsMuxStreamType;
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typedef struct PsMuxStreamBuffer PsMuxStreamBuffer;
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/* clearup and see if we need this anymore */
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struct PsMuxPacketInfo {
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guint32 flags;
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};
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/* bitstream writers */
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static inline void
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psmux_put16 (guint8 **pos, guint16 val)
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{
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*(*pos)++ = (val >> 8) & 0xff;
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*(*pos)++ = val & 0xff;
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}
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static inline void
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psmux_put32 (guint8 **pos, guint32 val)
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{
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*(*pos)++ = (val >> 24) & 0xff;
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*(*pos)++ = (val >> 16) & 0xff;
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*(*pos)++ = (val >> 8) & 0xff;
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*(*pos)++ = val & 0xff;
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}
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static inline void
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psmux_put_ts (guint8 **pos, guint8 id, gint64 ts)
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{
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/* 1: 4 bit id value | TS [32..30] | marker_bit */
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*(*pos)++ = ((id << 4) | ((ts >> 29) & 0x0E) | 0x01) & 0xff;
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/* 2, 3: TS[29..15] | marker_bit */
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psmux_put16 (pos, ((ts >> 14) & 0xfffe) | 0x01);
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/* 4, 5: TS[14..0] | marker_bit */
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psmux_put16 (pos, ((ts << 1) & 0xfffe) | 0x01);
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}
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G_END_DECLS
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#endif
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