ts: rewrite muxer
This commit is contained in:
nareix
parent
ab8f020f63
commit
b8afa6ca0c
@ -1,102 +0,0 @@
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package ts
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import (
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"encoding/hex"
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"fmt"
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"io"
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)
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var ieeeCrc32Tbl = []uint32{
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0x00000000, 0xB71DC104, 0x6E3B8209, 0xD926430D, 0xDC760413, 0x6B6BC517,
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0xB24D861A, 0x0550471E, 0xB8ED0826, 0x0FF0C922, 0xD6D68A2F, 0x61CB4B2B,
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0x649B0C35, 0xD386CD31, 0x0AA08E3C, 0xBDBD4F38, 0x70DB114C, 0xC7C6D048,
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0x1EE09345, 0xA9FD5241, 0xACAD155F, 0x1BB0D45B, 0xC2969756, 0x758B5652,
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0xC836196A, 0x7F2BD86E, 0xA60D9B63, 0x11105A67, 0x14401D79, 0xA35DDC7D,
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0x7A7B9F70, 0xCD665E74, 0xE0B62398, 0x57ABE29C, 0x8E8DA191, 0x39906095,
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0x3CC0278B, 0x8BDDE68F, 0x52FBA582, 0xE5E66486, 0x585B2BBE, 0xEF46EABA,
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0x3660A9B7, 0x817D68B3, 0x842D2FAD, 0x3330EEA9, 0xEA16ADA4, 0x5D0B6CA0,
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0x906D32D4, 0x2770F3D0, 0xFE56B0DD, 0x494B71D9, 0x4C1B36C7, 0xFB06F7C3,
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0x2220B4CE, 0x953D75CA, 0x28803AF2, 0x9F9DFBF6, 0x46BBB8FB, 0xF1A679FF,
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0xF4F63EE1, 0x43EBFFE5, 0x9ACDBCE8, 0x2DD07DEC, 0x77708634, 0xC06D4730,
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0x194B043D, 0xAE56C539, 0xAB068227, 0x1C1B4323, 0xC53D002E, 0x7220C12A,
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0xCF9D8E12, 0x78804F16, 0xA1A60C1B, 0x16BBCD1F, 0x13EB8A01, 0xA4F64B05,
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0x7DD00808, 0xCACDC90C, 0x07AB9778, 0xB0B6567C, 0x69901571, 0xDE8DD475,
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0xDBDD936B, 0x6CC0526F, 0xB5E61162, 0x02FBD066, 0xBF469F5E, 0x085B5E5A,
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0xD17D1D57, 0x6660DC53, 0x63309B4D, 0xD42D5A49, 0x0D0B1944, 0xBA16D840,
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0x97C6A5AC, 0x20DB64A8, 0xF9FD27A5, 0x4EE0E6A1, 0x4BB0A1BF, 0xFCAD60BB,
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0x258B23B6, 0x9296E2B2, 0x2F2BAD8A, 0x98366C8E, 0x41102F83, 0xF60DEE87,
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0xF35DA999, 0x4440689D, 0x9D662B90, 0x2A7BEA94, 0xE71DB4E0, 0x500075E4,
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0x892636E9, 0x3E3BF7ED, 0x3B6BB0F3, 0x8C7671F7, 0x555032FA, 0xE24DF3FE,
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0x5FF0BCC6, 0xE8ED7DC2, 0x31CB3ECF, 0x86D6FFCB, 0x8386B8D5, 0x349B79D1,
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0xEDBD3ADC, 0x5AA0FBD8, 0xEEE00C69, 0x59FDCD6D, 0x80DB8E60, 0x37C64F64,
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0x3296087A, 0x858BC97E, 0x5CAD8A73, 0xEBB04B77, 0x560D044F, 0xE110C54B,
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0x38368646, 0x8F2B4742, 0x8A7B005C, 0x3D66C158, 0xE4408255, 0x535D4351,
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0x9E3B1D25, 0x2926DC21, 0xF0009F2C, 0x471D5E28, 0x424D1936, 0xF550D832,
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0x2C769B3F, 0x9B6B5A3B, 0x26D61503, 0x91CBD407, 0x48ED970A, 0xFFF0560E,
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0xFAA01110, 0x4DBDD014, 0x949B9319, 0x2386521D, 0x0E562FF1, 0xB94BEEF5,
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0x606DADF8, 0xD7706CFC, 0xD2202BE2, 0x653DEAE6, 0xBC1BA9EB, 0x0B0668EF,
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0xB6BB27D7, 0x01A6E6D3, 0xD880A5DE, 0x6F9D64DA, 0x6ACD23C4, 0xDDD0E2C0,
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0x04F6A1CD, 0xB3EB60C9, 0x7E8D3EBD, 0xC990FFB9, 0x10B6BCB4, 0xA7AB7DB0,
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0xA2FB3AAE, 0x15E6FBAA, 0xCCC0B8A7, 0x7BDD79A3, 0xC660369B, 0x717DF79F,
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0xA85BB492, 0x1F467596, 0x1A163288, 0xAD0BF38C, 0x742DB081, 0xC3307185,
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0x99908A5D, 0x2E8D4B59, 0xF7AB0854, 0x40B6C950, 0x45E68E4E, 0xF2FB4F4A,
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0x2BDD0C47, 0x9CC0CD43, 0x217D827B, 0x9660437F, 0x4F460072, 0xF85BC176,
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0xFD0B8668, 0x4A16476C, 0x93300461, 0x242DC565, 0xE94B9B11, 0x5E565A15,
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0x87701918, 0x306DD81C, 0x353D9F02, 0x82205E06, 0x5B061D0B, 0xEC1BDC0F,
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0x51A69337, 0xE6BB5233, 0x3F9D113E, 0x8880D03A, 0x8DD09724, 0x3ACD5620,
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0xE3EB152D, 0x54F6D429, 0x7926A9C5, 0xCE3B68C1, 0x171D2BCC, 0xA000EAC8,
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0xA550ADD6, 0x124D6CD2, 0xCB6B2FDF, 0x7C76EEDB, 0xC1CBA1E3, 0x76D660E7,
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0xAFF023EA, 0x18EDE2EE, 0x1DBDA5F0, 0xAAA064F4, 0x738627F9, 0xC49BE6FD,
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0x09FDB889, 0xBEE0798D, 0x67C63A80, 0xD0DBFB84, 0xD58BBC9A, 0x62967D9E,
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0xBBB03E93, 0x0CADFF97, 0xB110B0AF, 0x060D71AB, 0xDF2B32A6, 0x6836F3A2,
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0x6D66B4BC, 0xDA7B75B8, 0x035D36B5, 0xB440F7B1, 0x00000001,
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}
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func updateIeeeCrc32(crc uint32, data []byte) uint32 {
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for _, b := range data {
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crc = ieeeCrc32Tbl[b^byte(crc)] ^ (crc >> 8)
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}
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return crc
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}
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type Crc32Reader struct {
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R io.Reader
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Crc32 uint32
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}
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var DebugCrc32 = false
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func (self *Crc32Reader) Read(b []byte) (n int, err error) {
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if n, err = self.R.Read(b); err != nil {
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return
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}
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if DebugCrc32 {
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fmt.Println("crc32: update", hex.EncodeToString(b))
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}
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self.Crc32 = updateIeeeCrc32(self.Crc32, b)
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return
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}
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func (self *Crc32Reader) ReadCrc32UIntAndCheck() (err error) {
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if err = ReadDummy(self, 4); err != nil {
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return
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}
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if self.Crc32 != 0 {
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err = fmt.Errorf("crc32(%x) != 0", self.Crc32)
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return
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}
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return
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}
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type Crc32Writer struct {
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W io.Writer
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Crc32 uint32
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}
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func (self *Crc32Writer) Write(b []byte) (n int, err error) {
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if n, err = self.W.Write(b); err != nil {
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return
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}
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self.Crc32 = updateIeeeCrc32(self.Crc32, b)
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return
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}
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@ -1,12 +0,0 @@
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package ts
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import (
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"testing"
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)
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func TestChecksum(t *testing.T) {
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b := []byte("hello world")
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b = append(b, []byte{0xbb, 0x08, 0xec, 0x87}...)
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crc := updateIeeeCrc32(0xffffffff, b)
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t.Logf("%x", crc)
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}
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@ -113,9 +113,9 @@ func (self *Demuxer) initPMT(payload []byte) (err error) {
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stream.pid = info.ElementaryPID
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stream.streamType = info.StreamType
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switch info.StreamType {
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case ElementaryStreamTypeH264:
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case tsio.ElementaryStreamTypeH264:
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self.streams = append(self.streams, stream)
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case ElementaryStreamTypeAdtsAAC:
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case tsio.ElementaryStreamTypeAdtsAAC:
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self.streams = append(self.streams, stream)
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}
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}
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@ -215,7 +215,7 @@ func (self *Stream) payloadEnd() (n int, err error) {
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self.data = nil
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switch self.streamType {
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case ElementaryStreamTypeAdtsAAC:
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case tsio.ElementaryStreamTypeAdtsAAC:
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var config aacparser.MPEG4AudioConfig
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delta := time.Duration(0)
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@ -235,7 +235,7 @@ func (self *Stream) payloadEnd() (n int, err error) {
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payload = payload[framelen:]
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}
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case ElementaryStreamTypeH264:
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case tsio.ElementaryStreamTypeH264:
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nalus, _ := h264parser.SplitNALUs(payload)
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var sps, pps []byte
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for _, nalu := range nalus {
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@ -1,32 +1,47 @@
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package ts
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import (
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"bytes"
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"time"
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"bufio"
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"fmt"
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"github.com/nareix/joy4/av"
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"github.com/nareix/joy4/format/ts/tsio"
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"github.com/nareix/pio"
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"github.com/nareix/joy4/codec/aacparser"
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"github.com/nareix/joy4/codec/h264parser"
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"io"
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)
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var CodecTypes = []av.CodecType{av.H264, av.AAC}
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type Muxer struct {
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w *bufio.Writer
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streams []*Stream
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PaddingToMakeCounterCont bool
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psidata []byte
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peshdr []byte
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tshdr []byte
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adtshdr []byte
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datav [][]byte
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nalus [][]byte
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tswPAT *TSWriter
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tswPMT *TSWriter
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tswpat, tswpmt *tsio.TSWriter
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}
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var CodecTypes = []av.CodecType{av.H264, av.AAC}
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func NewMuxer(w io.Writer) *Muxer {
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return &Muxer{
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w: bufio.NewWriterSize(w, pio.RecommendBufioSize),
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psidata: make([]byte, 188),
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peshdr: make([]byte, tsio.MaxPESHeaderLength),
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tshdr: make([]byte, tsio.MaxTSHeaderLength),
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adtshdr: make([]byte, aacparser.ADTSHeaderLength),
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nalus: make([][]byte, 16),
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datav: make([][]byte, 16),
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tswpmt: tsio.NewTSWriter(tsio.PMT_PID),
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tswpat: tsio.NewTSWriter(tsio.PAT_PID),
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}
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}
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func (self *Muxer) newStream(codec av.CodecData) (err error) {
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ok := false
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@ -46,7 +61,7 @@ func (self *Muxer) newStream(codec av.CodecData) (err error) {
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muxer: self,
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CodecData: codec,
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pid: pid,
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tsw: NewTSWriter(uint16(pid)),
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tsw: tsio.NewTSWriter(pid),
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}
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self.streams = append(self.streams, stream)
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return
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@ -85,50 +100,50 @@ func (self *Muxer) WriteTrailer() (err error) {
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return
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}
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func NewMuxer(w io.Writer) *Muxer {
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return &Muxer{
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w: bufio.NewWriterSize(w, pio.RecommendBufioSize),
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peshdr: make([]byte, MaxPESHeaderLength),
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tshdr: make([]byte, MaxTSHeaderLength),
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adtshdr: make([]byte, aacparser.ADTSHeaderLength),
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nalus: make([][]byte, 16),
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datav: make([][]byte, 16),
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}
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func (self *Muxer) ChangeWriter(w io.Writer) (err error) {
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return
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}
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func (self *Muxer) WritePATPMT() (err error) {
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bufPAT := &bytes.Buffer{}
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bufPMT := &bytes.Buffer{}
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pat := PAT{
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Entries: []PATEntry{
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{ProgramNumber: 1, ProgramMapPID: 0x1000},
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pat := tsio.PAT{
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Entries: []tsio.PATEntry{
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{ProgramNumber: 1, ProgramMapPID: tsio.PMT_PID},
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},
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}
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WritePAT(bufPAT, pat)
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patlen := pat.Marshal(self.psidata[tsio.PSIHeaderLength:])
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self.datav[0] = self.psidata[:tsio.PSIHeaderLength+patlen]
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if err = self.tswpat.WritePackets(self.w, self.datav[:1], 0, false, true); err != nil {
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return
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}
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var elemStreams []ElementaryStreamInfo
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var elemStreams []tsio.ElementaryStreamInfo
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for _, stream := range self.streams {
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switch stream.Type() {
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case av.AAC:
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elemStreams = append(elemStreams, ElementaryStreamInfo{StreamType: ElementaryStreamTypeAdtsAAC, ElementaryPID: uint(stream.pid)})
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elemStreams = append(elemStreams, tsio.ElementaryStreamInfo{
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StreamType: tsio.ElementaryStreamTypeAdtsAAC,
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ElementaryPID: stream.pid,
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})
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case av.H264:
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elemStreams = append(elemStreams, ElementaryStreamInfo{StreamType: ElementaryStreamTypeH264, ElementaryPID: uint(stream.pid)})
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elemStreams = append(elemStreams, tsio.ElementaryStreamInfo{
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StreamType: tsio.ElementaryStreamTypeH264,
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ElementaryPID: stream.pid,
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})
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}
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}
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pmt := PMT{
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pmt := tsio.PMT{
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PCRPID: 0x100,
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ElementaryStreamInfos: elemStreams,
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}
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WritePMT(bufPMT, pmt)
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self.tswPMT = NewTSWriter(0x1000)
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self.tswPAT = NewTSWriter(0)
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if err = self.tswPAT.WritePackets(self.w, [][]byte{bufPAT.Bytes()}, 0, false, true); err != nil {
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pmtlen := pmt.Len()
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if pmtlen+tsio.PSIHeaderLength > len(self.psidata) {
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err = fmt.Errorf("ts: pmt too large")
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return
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}
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if err = self.tswPMT.WritePackets(self.w, [][]byte{bufPMT.Bytes()}, 0, false, true); err != nil {
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pmt.Marshal(self.psidata[tsio.PSIHeaderLength:])
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self.datav[0] = self.psidata[:tsio.PSIHeaderLength+pmtlen]
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if err = self.tswpmt.WritePackets(self.w, self.datav[:1], 0, false, true); err != nil {
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return
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}
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@ -149,144 +164,21 @@ func (self *Muxer) WriteHeader(streams []av.CodecData) (err error) {
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return
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}
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const MaxPESHeaderLength = 19
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const MaxTSHeaderLength = 12
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func FillPESHeader(h []byte, streamid uint8, datalength int, pts, dts uint64) (n int) {
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h[0] = 0
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h[1] = 0
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h[2] = 1
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h[3] = streamid
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const PTS = 1 << 7
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const DTS = 1 << 6
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var pts_dts_flags uint8
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if pts != 0 {
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pts_dts_flags |= PTS
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if dts != 0 {
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pts_dts_flags |= DTS
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}
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}
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if pts_dts_flags&PTS != 0 {
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n += 5
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}
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if pts_dts_flags&DTS != 0 {
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n += 5
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}
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var packet_length uint16
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// packet_length(16) if zero then variable length
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// Specifies the number of bytes remaining in the packet after this field. Can be zero.
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// If the PES packet length is set to zero, the PES packet can be of any length.
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// A value of zero for the PES packet length can be used only when the PES packet payload is a **video** elementary stream.
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if datalength >= 0 {
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packet_length = uint16(datalength + n + 3)
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}
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pio.PutU16BE(h[4:6], packet_length)
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h[6] = 2<<6|1 // resverd(6,2)=2,original_or_copy(0,1)=1
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h[7] = pts_dts_flags
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h[8] = uint8(n)
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// pts(40)?
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// dts(40)?
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if pts_dts_flags&PTS != 0 {
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if pts_dts_flags&DTS != 0 {
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pio.PutU40BE(h[9:14], PESTsToUInt(pts)|3<<36)
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pio.PutU40BE(h[14:19], PESTsToUInt(dts)|1<<36)
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} else {
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pio.PutU40BE(h[9:14], PESTsToUInt(pts)|2<<36)
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}
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}
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n += 9
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return
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}
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func NewTSWriter(pid uint16) *TSWriter {
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w := &TSWriter{}
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w.tshdr = make([]byte, 188)
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w.tshdr[0] = 0x47
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pio.PutU16BE(w.tshdr[1:3], pid&0x1fff)
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for i := 6; i < 188; i++ {
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w.tshdr[i] = 0xff
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}
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return w
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}
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func (self *TSWriter) WritePackets(w io.Writer, datav [][]byte, pcr uint64, sync bool, paddata bool) (err error) {
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datavlen := pio.VecLen(datav)
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writev := make([][]byte, len(datav))
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writepos := 0
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for writepos < datavlen {
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self.tshdr[1] = self.tshdr[1]&0x1f
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self.tshdr[3] = byte(self.ContinuityCounter)&0xf|0x30
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self.tshdr[5] = 0 // flags
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hdrlen := 6
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self.ContinuityCounter++
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if writepos == 0 {
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self.tshdr[1] = 0x40|self.tshdr[1] // Payload Unit Start Indicator
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if pcr != 0 {
|
||||
hdrlen += 6
|
||||
self.tshdr[5] = 0x10|self.tshdr[5] // PCR flag (Discontinuity indicator 0x80)
|
||||
pio.PutU48BE(self.tshdr[6:12], PCRToUInt(pcr))
|
||||
}
|
||||
if sync {
|
||||
self.tshdr[5] = 0x40|self.tshdr[5] // Random Access indicator
|
||||
}
|
||||
}
|
||||
|
||||
padtail := 0
|
||||
end := writepos + 188 - hdrlen
|
||||
if end > datavlen {
|
||||
if paddata {
|
||||
padtail = end - datavlen
|
||||
} else {
|
||||
hdrlen += end - datavlen
|
||||
}
|
||||
end = datavlen
|
||||
}
|
||||
n := pio.VecSliceNoNew(datav, writev, writepos, end)
|
||||
|
||||
self.tshdr[4] = byte(hdrlen)-5 // length
|
||||
if _, err = w.Write(self.tshdr[:hdrlen]); err != nil {
|
||||
return
|
||||
}
|
||||
for i := 0; i < n; i++ {
|
||||
if _, err = w.Write(writev[i]); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
if padtail > 0 {
|
||||
if _, err = w.Write(self.tshdr[188-padtail:188]); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
writepos = end
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
func (self *Muxer) WritePacket(pkt av.Packet) (err error) {
|
||||
stream := self.streams[pkt.Idx]
|
||||
pkt.Time += time.Second
|
||||
|
||||
switch stream.Type() {
|
||||
case av.AAC:
|
||||
codec := stream.CodecData.(aacparser.CodecData)
|
||||
|
||||
n := FillPESHeader(self.peshdr, StreamIdAAC, len(self.adtshdr)+len(pkt.Data), timeToPesTs(pkt.Time), 0)
|
||||
n := tsio.FillPESHeader(self.peshdr, tsio.StreamIdAAC, len(self.adtshdr)+len(pkt.Data), pkt.Time, 0)
|
||||
self.datav[0] = self.peshdr[:n]
|
||||
aacparser.FillADTSHeader(self.adtshdr, codec.Config, 1024, len(pkt.Data))
|
||||
self.datav[1] = self.adtshdr
|
||||
self.datav[2] = pkt.Data
|
||||
|
||||
if err = stream.tsw.WritePackets(self.w, self.datav[:3], timeToPCR(pkt.Time), true, false); err != nil {
|
||||
if err = stream.tsw.WritePackets(self.w, self.datav[:3], pkt.Time, true, false); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
@ -304,16 +196,19 @@ func (self *Muxer) WritePacket(pkt av.Packet) (err error) {
|
||||
}
|
||||
|
||||
datav := self.datav[:1]
|
||||
h264parser.WalkNALUsAnnexb(nalus, func(b []byte) {
|
||||
datav = append(datav, b)
|
||||
})
|
||||
for i, nalu := range nalus {
|
||||
if i == 0 {
|
||||
datav = append(datav, h264parser.AUDBytes)
|
||||
} else {
|
||||
datav = append(datav, h264parser.StartCodeBytes)
|
||||
}
|
||||
datav = append(datav, nalu)
|
||||
}
|
||||
|
||||
pts := timeToPesTs(pkt.Time+pkt.CompositionTime)
|
||||
dts := timeToPesTs(pkt.Time)
|
||||
n := FillPESHeader(self.peshdr, StreamIdH264, -1, pts, dts)
|
||||
n := tsio.FillPESHeader(self.peshdr, tsio.StreamIdH264, -1, pkt.Time+pkt.CompositionTime, pkt.Time)
|
||||
datav[0] = self.peshdr[:n]
|
||||
|
||||
if err = stream.tsw.WritePackets(self.w, datav, timeToPCR(pkt.Time), pkt.IsKeyFrame, false); err != nil {
|
||||
if err = stream.tsw.WritePackets(self.w, datav, pkt.Time, pkt.IsKeyFrame, false); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
@ -1,385 +0,0 @@
|
||||
package ts
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
)
|
||||
|
||||
func ReadUInt(r io.Reader, n int) (res uint, err error) {
|
||||
var b [4]byte
|
||||
if _, err = r.Read(b[0:n]); err != nil {
|
||||
return
|
||||
}
|
||||
for i := 0; i < n; i++ {
|
||||
res <<= 8
|
||||
res |= uint(b[i])
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func ReadDummy(r io.Reader, n int) (err error) {
|
||||
_, err = io.CopyN(ioutil.Discard, r, int64(n))
|
||||
return
|
||||
}
|
||||
|
||||
func ReadUInt64(r io.Reader, n int) (res uint64, err error) {
|
||||
var res32 uint
|
||||
if n > 4 {
|
||||
if res32, err = ReadUInt(r, n-4); err != nil {
|
||||
return
|
||||
}
|
||||
res |= uint64(res32) << 32
|
||||
n = 4
|
||||
}
|
||||
if res32, err = ReadUInt(r, n); err != nil {
|
||||
return
|
||||
}
|
||||
res |= uint64(res32)
|
||||
return
|
||||
}
|
||||
|
||||
func ReadPSI(r io.Reader) (self PSI, lr *io.LimitedReader, cr *Crc32Reader, err error) {
|
||||
var flags, pointer, length uint
|
||||
|
||||
// pointer field
|
||||
if pointer, err = ReadUInt(r, 1); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if pointer != 0 {
|
||||
if err = ReadDummy(r, int(pointer)); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
cr = &Crc32Reader{R: r, Crc32: 0xffffffff}
|
||||
|
||||
// table_id
|
||||
if self.TableId, err = ReadUInt(cr, 1); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// reserved(4)=0xb
|
||||
// section_length(10)
|
||||
if flags, err = ReadUInt(cr, 2); err != nil {
|
||||
return
|
||||
}
|
||||
length = flags & 0x3FF
|
||||
|
||||
lr = &io.LimitedReader{R: cr, N: int64(length)}
|
||||
|
||||
// Table ID extension(16)
|
||||
if self.TableIdExtension, err = ReadUInt(lr, 2); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// resverd(2)=3
|
||||
// version(5)
|
||||
// Current_next_indicator(1)
|
||||
if flags, err = ReadUInt(lr, 1); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// section_number(8)
|
||||
if self.SecNum, err = ReadUInt(lr, 1); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// last_section_number(8)
|
||||
if self.LastSecNum, err = ReadUInt(lr, 1); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
lr.N -= 4
|
||||
return
|
||||
}
|
||||
|
||||
func ReadPMT(r io.Reader) (self PMT, err error) {
|
||||
readDescs := func(lr *io.LimitedReader) (res []Descriptor, err error) {
|
||||
var desc Descriptor
|
||||
for lr.N > 0 {
|
||||
if desc.Tag, err = ReadUInt(lr, 1); err != nil {
|
||||
return
|
||||
}
|
||||
var length uint
|
||||
if length, err = ReadUInt(lr, 1); err != nil {
|
||||
return
|
||||
}
|
||||
desc.Data = make([]byte, length)
|
||||
if _, err = lr.Read(desc.Data); err != nil {
|
||||
return
|
||||
}
|
||||
res = append(res, desc)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
var lr *io.LimitedReader
|
||||
var cr *Crc32Reader
|
||||
//var psi PSI
|
||||
|
||||
if _, lr, cr, err = ReadPSI(r); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
var flags, length uint
|
||||
|
||||
// 111(3)
|
||||
// PCRPID(13)
|
||||
if flags, err = ReadUInt(lr, 2); err != nil {
|
||||
return
|
||||
}
|
||||
self.PCRPID = flags & 0x1fff
|
||||
|
||||
// Reserved(4)=0xf
|
||||
// Reserved(2)=0x0
|
||||
// Program info length(10)
|
||||
if flags, err = ReadUInt(lr, 2); err != nil {
|
||||
return
|
||||
}
|
||||
length = flags & 0x3ff
|
||||
|
||||
if length > 0 {
|
||||
lr := &io.LimitedReader{R: lr, N: int64(length)}
|
||||
if self.ProgramDescriptors, err = readDescs(lr); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
for lr.N > 0 {
|
||||
var info ElementaryStreamInfo
|
||||
if info.StreamType, err = ReadUInt(lr, 1); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// Reserved(3)
|
||||
// Elementary PID(13)
|
||||
if flags, err = ReadUInt(lr, 2); err != nil {
|
||||
return
|
||||
}
|
||||
info.ElementaryPID = flags & 0x1fff
|
||||
|
||||
// Reserved(6)
|
||||
// ES Info length(10)
|
||||
if flags, err = ReadUInt(lr, 2); err != nil {
|
||||
return
|
||||
}
|
||||
length = flags & 0x3ff
|
||||
|
||||
if length > 0 {
|
||||
lr := &io.LimitedReader{R: lr, N: int64(length)}
|
||||
if info.Descriptors, err = readDescs(lr); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
self.ElementaryStreamInfos = append(self.ElementaryStreamInfos, info)
|
||||
}
|
||||
|
||||
if err = cr.ReadCrc32UIntAndCheck(); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
func ReadPAT(r io.Reader) (self PAT, err error) {
|
||||
var lr *io.LimitedReader
|
||||
var cr *Crc32Reader
|
||||
//var psi PSI
|
||||
|
||||
if _, lr, cr, err = ReadPSI(r); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
for lr.N > 0 {
|
||||
entry := PATEntry{}
|
||||
if entry.ProgramNumber, err = ReadUInt(lr, 2); err != nil {
|
||||
return
|
||||
}
|
||||
if entry.ProgramNumber == 0 {
|
||||
if entry.NetworkPID, err = ReadUInt(lr, 2); err != nil {
|
||||
return
|
||||
}
|
||||
entry.NetworkPID &= 0x1fff
|
||||
} else {
|
||||
if entry.ProgramMapPID, err = ReadUInt(lr, 2); err != nil {
|
||||
return
|
||||
}
|
||||
entry.ProgramMapPID &= 0x1fff
|
||||
}
|
||||
self.Entries = append(self.Entries, entry)
|
||||
}
|
||||
|
||||
if err = cr.ReadCrc32UIntAndCheck(); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
func ReadPESHeader(r io.Reader) (res *PESHeader, err error) {
|
||||
var flags, length uint
|
||||
self := &PESHeader{}
|
||||
|
||||
// http://dvd.sourceforge.net/dvdinfo/pes-hdr.html
|
||||
|
||||
// start code 000001
|
||||
if flags, err = ReadUInt(r, 3); err != nil {
|
||||
return
|
||||
}
|
||||
if flags != 0x000001 {
|
||||
err = fmt.Errorf("invalid PES header")
|
||||
return
|
||||
}
|
||||
|
||||
if self.StreamId, err = ReadUInt(r, 1); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if length, err = ReadUInt(r, 2); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if length == 0 {
|
||||
length = 1 << 31
|
||||
}
|
||||
lrAll := &io.LimitedReader{R: r, N: int64(length)}
|
||||
lr := lrAll
|
||||
|
||||
// 10(2)
|
||||
// PES scrambling control(2)
|
||||
// PES priority(1)
|
||||
// data alignment indicator(1)
|
||||
// copyright(1)
|
||||
// original or copy(1)
|
||||
if _, err = ReadUInt(lr, 1); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// PTS DTS flags(2)
|
||||
// ESCR flag(1)
|
||||
// ES rate flag(1)
|
||||
// DSM trick mode flag(1)
|
||||
// additional copy info flag(1)
|
||||
// PES CRC flag(1)
|
||||
// PES extension flag(1)
|
||||
if flags, err = ReadUInt(lr, 1); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// PES header data length(8)
|
||||
if length, err = ReadUInt(lr, 1); err != nil {
|
||||
return
|
||||
}
|
||||
lr = &io.LimitedReader{R: lr, N: int64(length)}
|
||||
|
||||
if flags&0x80 != 0 {
|
||||
var v uint64
|
||||
if v, err = ReadUInt64(lr, 5); err != nil {
|
||||
return
|
||||
}
|
||||
self.PTS = PESUIntToTs(v)
|
||||
}
|
||||
|
||||
if flags&0x40 != 0 && flags&0x80 != 0 {
|
||||
var v uint64
|
||||
if v, err = ReadUInt64(lr, 5); err != nil {
|
||||
return
|
||||
}
|
||||
self.DTS = PESUIntToTs(v)
|
||||
}
|
||||
|
||||
// ESCR flag
|
||||
if flags&0x20 != 0 {
|
||||
if _, err = ReadUInt64(lr, 6); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
// ES rate flag
|
||||
if flags&0x10 != 0 {
|
||||
if _, err = ReadUInt64(lr, 3); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
// additional copy info flag
|
||||
if flags&0x04 != 0 {
|
||||
if _, err = ReadUInt(lr, 1); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
// PES CRC flag
|
||||
if flags&0x02 != 0 {
|
||||
if _, err = ReadUInt(lr, 2); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
// PES extension flag
|
||||
if flags&0x01 != 0 {
|
||||
var flags uint
|
||||
|
||||
// PES private data flag(1)
|
||||
// pack header field flag(1)
|
||||
// program packet sequence counter flag(1)
|
||||
// P-STD buffer flag(1)
|
||||
// 111(3)
|
||||
// PES extension flag 2(1)
|
||||
if flags, err = ReadUInt(lr, 1); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// PES private data flag(1)
|
||||
if flags&0x80 != 0 {
|
||||
// if set to 1 16 bytes of user defined data is appended to the header data field
|
||||
if err = ReadDummy(lr, 16); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
// pack header field flag(1)
|
||||
if flags&0x40 != 0 {
|
||||
// if set to 1 the 8-bit pack field length value is appended to the header data field
|
||||
if err = ReadDummy(lr, 1); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
// program packet sequence counter flag(1)
|
||||
if flags&0x20 != 0 {
|
||||
if err = ReadDummy(lr, 2); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
// P-STD buffer flag(1)
|
||||
if flags&0x10 != 0 {
|
||||
if err = ReadDummy(lr, 2); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
// PES extension flag 2(1)
|
||||
if flags&0x01 != 0 {
|
||||
if err = ReadDummy(lr, 2); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if lr.N > 0 {
|
||||
if err = ReadDummy(lr, int(lr.N)); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
if lrAll.N < 65536 {
|
||||
self.DataLength = uint(lrAll.N)
|
||||
}
|
||||
|
||||
res = self
|
||||
return
|
||||
}
|
||||
@ -2,15 +2,13 @@ package ts
|
||||
|
||||
import (
|
||||
"time"
|
||||
"bytes"
|
||||
"github.com/nareix/joy4/av"
|
||||
"github.com/nareix/joy4/format/ts/tsio"
|
||||
)
|
||||
|
||||
type Stream struct {
|
||||
av.CodecData
|
||||
|
||||
buf bytes.Buffer
|
||||
|
||||
demuxer *Demuxer
|
||||
muxer *Muxer
|
||||
|
||||
@ -18,7 +16,7 @@ type Stream struct {
|
||||
streamId uint8
|
||||
streamType uint8
|
||||
|
||||
tsw *TSWriter
|
||||
tsw *tsio.TSWriter
|
||||
idx int
|
||||
|
||||
iskeyframe bool
|
||||
@ -27,10 +25,3 @@ type Stream struct {
|
||||
datalen int
|
||||
}
|
||||
|
||||
func timeToPesTs(tm time.Duration) uint64 {
|
||||
return uint64(tm*PTS_HZ/time.Second) + PTS_HZ
|
||||
}
|
||||
|
||||
func timeToPCR(tm time.Duration) uint64 {
|
||||
return uint64(tm*PCR_HZ/time.Second) + PCR_HZ
|
||||
}
|
||||
|
||||
@ -1,92 +0,0 @@
|
||||
package ts
|
||||
|
||||
import (
|
||||
"io"
|
||||
)
|
||||
|
||||
const (
|
||||
ElementaryStreamTypeH264 = 0x1B
|
||||
ElementaryStreamTypeAdtsAAC = 0x0F
|
||||
)
|
||||
|
||||
type PATEntry struct {
|
||||
ProgramNumber uint
|
||||
NetworkPID uint
|
||||
ProgramMapPID uint
|
||||
}
|
||||
|
||||
type PAT struct {
|
||||
Entries []PATEntry
|
||||
}
|
||||
|
||||
type PMT struct {
|
||||
PCRPID uint
|
||||
ProgramDescriptors []Descriptor
|
||||
ElementaryStreamInfos []ElementaryStreamInfo
|
||||
}
|
||||
|
||||
type Descriptor struct {
|
||||
Tag uint
|
||||
Data []byte
|
||||
}
|
||||
|
||||
type ElementaryStreamInfo struct {
|
||||
StreamType uint
|
||||
ElementaryPID uint
|
||||
Descriptors []Descriptor
|
||||
}
|
||||
|
||||
type PSI struct {
|
||||
TableIdExtension uint
|
||||
TableId uint
|
||||
SecNum uint
|
||||
LastSecNum uint
|
||||
}
|
||||
|
||||
const (
|
||||
StreamIdH264 = 0xe0
|
||||
StreamIdAAC = 0xc0
|
||||
)
|
||||
|
||||
type PESHeader struct {
|
||||
StreamId uint // H264=0xe0 AAC=0xc0
|
||||
DataLength uint
|
||||
PTS uint64
|
||||
DTS uint64
|
||||
ESCR uint64
|
||||
}
|
||||
|
||||
func PESUIntToTs(v uint64) (ts uint64) {
|
||||
// 0010 PTS 32..30 1 PTS 29..15 1 PTS 14..00 1
|
||||
return (((v >> 33) & 0x7) << 30) | (((v >> 17) & 0x7fff) << 15) | ((v >> 1) & 0x7fff)
|
||||
}
|
||||
|
||||
func PESTsToUInt(ts uint64) (v uint64) {
|
||||
// 0010 PTS 32..30 1 PTS 29..15 1 PTS 14..00 1
|
||||
return ((ts>>30)&0x7)<<33 | ((ts>>15)&0x7fff)<<17 | (ts&0x7fff)<<1 | 0x100010001
|
||||
}
|
||||
|
||||
const (
|
||||
PTS_HZ = 90000
|
||||
PCR_HZ = 27000000
|
||||
)
|
||||
|
||||
func UIntToPCR(v uint64) uint64 {
|
||||
// base(33)+resverd(6)+ext(9)
|
||||
base := v >> 15
|
||||
ext := v & 0x1ff
|
||||
return base*300 + ext
|
||||
}
|
||||
|
||||
func PCRToUInt(pcr uint64) uint64 {
|
||||
base := pcr / 300
|
||||
ext := pcr % 300
|
||||
return base<<15 | 0x3f<<9 | ext
|
||||
}
|
||||
|
||||
type TSWriter struct {
|
||||
w io.Writer
|
||||
ContinuityCounter uint
|
||||
tshdr []byte
|
||||
}
|
||||
|
||||
@ -15,6 +15,7 @@ const (
|
||||
|
||||
const (
|
||||
PAT_PID = 0
|
||||
PMT_PID = 0x1000
|
||||
)
|
||||
|
||||
const TableIdPMT = 2
|
||||
@ -327,6 +328,8 @@ func ParsePSI(h []byte) (tableid uint8, tableext uint16, hdrlen int, datalen int
|
||||
return
|
||||
}
|
||||
|
||||
const PSIHeaderLength = 9
|
||||
|
||||
func FillPSI(h []byte, tableid uint8, tableext uint16, data []byte) (n int) {
|
||||
// pointer(8)
|
||||
h[n] = 0
|
||||
|
||||
@ -1,199 +0,0 @@
|
||||
package ts
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"io"
|
||||
)
|
||||
|
||||
func WriteUInt64(w io.Writer, val uint64, n int) (err error) {
|
||||
var b [8]byte
|
||||
for i := n - 1; i >= 0; i-- {
|
||||
b[i] = byte(val)
|
||||
val >>= 8
|
||||
}
|
||||
if _, err = w.Write(b[:n]); err != nil {
|
||||
return
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func WriteUInt(w io.Writer, val uint, n int) (err error) {
|
||||
return WriteUInt64(w, uint64(val), n)
|
||||
}
|
||||
|
||||
func WritePSI(w io.Writer, self PSI, data []byte) (err error) {
|
||||
// pointer(8)
|
||||
// table_id(8)
|
||||
// reserved(4)=0xb,section_length(10)
|
||||
// Table ID extension(16)
|
||||
// section_syntax_indicator(1)=1,private_bit(1)=1,reserved(2)=3,unused(2)=0,section_length(10)
|
||||
// section_number(8)
|
||||
// last_section_number(8)
|
||||
// data
|
||||
// crc(32)
|
||||
|
||||
// pointer(8)
|
||||
if err = WriteUInt(w, 0, 1); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
cw := &Crc32Writer{W: w, Crc32: 0xffffffff}
|
||||
|
||||
// table_id(8)
|
||||
if err = WriteUInt(cw, self.TableId, 1); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// section_syntax_indicator(1)=1,private_bit(1)=0,reserved(2)=3,unused(2)=0,section_length(10)
|
||||
var flags, length uint
|
||||
length = 2 + 3 + 4 + uint(len(data))
|
||||
flags = 0xa<<12 | length
|
||||
if err = WriteUInt(cw, flags, 2); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// Table ID extension(16)
|
||||
if err = WriteUInt(cw, self.TableIdExtension, 2); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// resverd(2)=3,version(5)=0,Current_next_indicator(1)=1
|
||||
flags = 0x3<<6 | 1
|
||||
if err = WriteUInt(cw, flags, 1); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// section_number(8)
|
||||
if err = WriteUInt(cw, self.SecNum, 1); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// last_section_number(8)
|
||||
if err = WriteUInt(cw, self.LastSecNum, 1); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// data
|
||||
if _, err = cw.Write(data); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// crc(32)
|
||||
if err = WriteUInt(w, bswap32(uint(cw.Crc32)), 4); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
func bswap32(v uint) uint {
|
||||
return (v >> 24) | ((v>>16)&0xff)<<8 | ((v>>8)&0xff)<<16 | (v&0xff)<<24
|
||||
}
|
||||
|
||||
func WritePAT(w io.Writer, self PAT) (err error) {
|
||||
bw := &bytes.Buffer{}
|
||||
|
||||
for _, entry := range self.Entries {
|
||||
if err = WriteUInt(bw, entry.ProgramNumber, 2); err != nil {
|
||||
return
|
||||
}
|
||||
if entry.ProgramNumber == 0 {
|
||||
if err = WriteUInt(bw, entry.NetworkPID&0x1fff|7<<13, 2); err != nil {
|
||||
return
|
||||
}
|
||||
} else {
|
||||
if err = WriteUInt(bw, entry.ProgramMapPID&0x1fff|7<<13, 2); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
psi := PSI{
|
||||
TableIdExtension: 1,
|
||||
}
|
||||
if err = WritePSI(w, psi, bw.Bytes()); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
func WritePMT(w io.Writer, self PMT) (err error) {
|
||||
writeDescs := func(w io.Writer, descs []Descriptor) (err error) {
|
||||
for _, desc := range descs {
|
||||
if err = WriteUInt(w, desc.Tag, 1); err != nil {
|
||||
return
|
||||
}
|
||||
if err = WriteUInt(w, uint(len(desc.Data)), 1); err != nil {
|
||||
return
|
||||
}
|
||||
if _, err = w.Write(desc.Data); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
writeBody := func(w io.Writer) (err error) {
|
||||
if err = WriteUInt(w, self.PCRPID|7<<13, 2); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
bw := &bytes.Buffer{}
|
||||
if err = writeDescs(bw, self.ProgramDescriptors); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if err = WriteUInt(w, 0xf<<12|uint(bw.Len()), 2); err != nil {
|
||||
return
|
||||
}
|
||||
if _, err = w.Write(bw.Bytes()); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
for _, info := range self.ElementaryStreamInfos {
|
||||
if err = WriteUInt(w, info.StreamType, 1); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// Reserved(3)
|
||||
// Elementary PID(13)
|
||||
if err = WriteUInt(w, info.ElementaryPID|7<<13, 2); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
bw := &bytes.Buffer{}
|
||||
if err = writeDescs(bw, info.Descriptors); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// Reserved(6)
|
||||
// ES Info length length(10)
|
||||
if err = WriteUInt(w, uint(bw.Len())|0x3c<<10, 2); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if _, err = w.Write(bw.Bytes()); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
bw := &bytes.Buffer{}
|
||||
if err = writeBody(bw); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
psi := PSI{
|
||||
TableId: 2,
|
||||
TableIdExtension: 1,
|
||||
}
|
||||
if err = WritePSI(w, psi, bw.Bytes()); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user