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67 lines
2.3 KiB
Go
67 lines
2.3 KiB
Go
// 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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// MPEG: Moving Picture Experts Group
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// <iso13818-1.pdf>
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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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PidPmt uint16 = 0x1001
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PidVideo uint16 = 0x100
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PidAudio uint16 = 0x101
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// AdaptationFieldControlReserved ------------------------------------------
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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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// StreamTypeUnknown ... -----------------------------------------------------------------------------
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// <iso13818-1.pdf> <Table 2-29 Stream type assignments> <page 66/174>
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// 0x0F AAC (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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// 0x24 HEVC (HEVC video stream as defined in Rec. ITU-T H.265 | ISO/IEC 23008-2 MPEG-H Part 2)
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// -----------------------------------------------------------------------------
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StreamTypeUnknown uint8 = 0x00
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StreamTypePrivate uint8 = 0x06
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StreamTypeAac uint8 = 0x0F
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StreamTypeAvc uint8 = 0x1B
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StreamTypeHevc uint8 = 0x24
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)
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// PES
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const (
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// StreamIdAudio ... -----------------------------------------------------------------
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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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// PtsDtsFlags0 ------------------------------
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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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