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// Copyright 2020, Chef. All rights reserved.
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// https://github.com/q191201771/lal
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//
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// Use of this source code is governed by a MIT-style license
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// that can be found in the License file.
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//
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// Author: Chef (191201771@qq.com)
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package mpegts
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import "errors"
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// MPEG: Moving Picture Experts Group
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var ErrMPEGTS = errors.New("lal.mpegts: fxxk")
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// 每个TS文件都以固定的PAT，PMT开始
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var FixedFragmentHeader = []byte{
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/* TS */
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0x47, 0x40, 0x00, 0x10, 0x00,
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/* PSI */
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0x00, 0xb0, 0x0d, 0x00, 0x01, 0xc1, 0x00, 0x00,
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/* PAT */
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0x00, 0x01, 0xf0, 0x01,
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/* CRC */
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0x2e, 0x70, 0x19, 0x05,
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/* stuffing 167 bytes */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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/* TS */
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0x47, 0x50, 0x01, 0x10, 0x00,
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/* PSI */
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0x02, 0xb0, 0x17, 0x00, 0x01, 0xc1, 0x00, 0x00,
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/* PMT */
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0xe1, 0x00,
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0xf0, 0x00,
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0x1b, 0xe1, 0x00, 0xf0, 0x00, /* avc epid 256 */
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0x0f, 0xe1, 0x01, 0xf0, 0x00, /* aac epid 257 */
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/* CRC */
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0x2f, 0x44, 0xb9, 0x9b, /* crc for aac */
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/* stuffing 157 bytes */
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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}
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// TS Packet Header
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const (
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syncByte uint8 = 0x47
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PidPAT uint16 = 0
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PidVideo uint16 = 0x100
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PidAudio uint16 = 0x101
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// ------------------------------------------
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// <iso13818-1.pdf> <Table 2-5> <page 38/174>
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// ------------------------------------------
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AdaptationFieldControlReserved uint8 = 0 // Reserved for future use by ISO/IEC
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AdaptationFieldControlNo uint8 = 1 // No adaptation_field, payload only
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AdaptationFieldControlOnly uint8 = 2 // Adaptation_field only, no payload
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AdaptationFieldControlFollowed uint8 = 3 // Adaptation_field followed by payload
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)
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// PMT
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const (
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// -----------------------------------------------------------------------------
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// <iso13818-1.pdf> <Table 2-29 Stream type assignments> <page 66/174>
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// 0x0F ISO/IEC 13818-7 Audio with ADTS transport syntax
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// 0x1B AVC video stream as defined in ITU-T Rec. H.264 | ISO/IEC 14496-10 Video
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// -----------------------------------------------------------------------------
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streamTypeAAC uint8 = 0x0F
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streamTypeAVC uint8 = 0x1B
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)
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// PES
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const (
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// -----------------------------------------------------------------
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// <iso13818-1.pdf> <Table 2-18-Stream_id assignments> <page 52/174>
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// -----------------------------------------------------------------
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StreamIDAudio uint8 = 192 // 110x xxxx 0xC0
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StreamIDVideo uint8 = 224 // 1110 xxxx
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// ------------------------------
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// <iso13818-1.pdf> <page 53/174>
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// ------------------------------
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PTSDTSFlags0 uint8 = 0 // no PTS no DTS
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PTSDTSFlags1 uint8 = 1 // forbidden
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PTSDTSFlags2 uint8 = 2 // only PTS
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PTSDTSFlags3 uint8 = 3 // both PTS and DTS
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)
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const (
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delay uint64 = 63000 // 700 ms PCR delay TODO chef: 具体作用？
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)
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