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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 main
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import (
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"bytes"
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"encoding/hex"
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"io/ioutil"
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"github.com/q191201771/lal/pkg/mpegts"
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"github.com/q191201771/lal/pkg/hls"
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"github.com/q191201771/naza/pkg/nazalog"
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)
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// 临时小工具，比较两个TS文件。注意，该程序还没有写完。
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var filename1 = "/tmp/lal/hls/innertest/innertest-7.ts"
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var filename2 = "/tmp/lal/hls/innertest.bak/innertest-7.ts"
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func skipPacketFilter(tss [][]byte) (ret [][]byte) {
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for _, ts := range tss {
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h := mpegts.ParseTSPacketHeader(ts)
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if h.Pid == mpegts.PidAudio {
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continue
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}
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ret = append(ret, ts)
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}
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return
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}
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func parsePacket(packet []byte) {
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h := mpegts.ParseTSPacketHeader(packet)
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nazalog.Debugf("%+v", h)
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index := 4
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var adaptation mpegts.TSPacketAdaptation
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switch h.Adaptation {
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case mpegts.AdaptationFieldControlNo:
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// noop
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case mpegts.AdaptationFieldControlFollowed:
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adaptation = mpegts.ParseTSPacketAdaptation(packet[4:])
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index++
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default:
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nazalog.Warn(h.Adaptation)
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}
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index += int(adaptation.Length)
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if h.PayloadUnitStart == 1 && h.Pid == 256 {
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pes, length := mpegts.ParsePES(packet[index:])
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nazalog.Debugf("%+v, %d", pes, length)
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}
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}
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func main() {
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_ = nazalog.Init(func(option *nazalog.Option) {
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option.AssertBehavior = nazalog.AssertFatal
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})
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defer nazalog.Sync()
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content1, err := ioutil.ReadFile(filename1)
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nazalog.Assert(nil, err)
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content2, err := ioutil.ReadFile(filename2)
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nazalog.Assert(nil, err)
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tss1, _ := hls.SplitFragment2TSPackets(content1)
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tss2, _ := hls.SplitFragment2TSPackets(content2)
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nazalog.Debugf("num of ts1=%d, num of ts2=%d", len(tss1), len(tss2))
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//tss1 = skipPacketFilter(tss1)
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//tss2 = skipPacketFilter(tss2)
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nazalog.Debugf("after skip. num of ts1=%d, num of ts2=%d", len(tss1), len(tss2))
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m := len(tss1)
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if m > len(tss2) {
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m = len(tss2)
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}
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for i := 0; i < m; i++ {
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if !bytes.Equal(tss1[i], tss2[i]) {
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nazalog.Debug(i)
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parsePacket(tss1[i])
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parsePacket(tss2[i])
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nazalog.Debugf("\n%s", hex.Dump(tss1[i]))
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nazalog.Debugf("\n%s", hex.Dump(tss2[i]))
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}
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}
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}
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