1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
|
/*
* demux.cpp: A program for the Video Disk Recorder
*
* See the README file for copyright information and how to reach the author.
*
*/
#include "demux.h"
#include <string.h>
cMarkAdDemux::cMarkAdDemux()
{
ts2pkt=NULL;
pes2audioes=NULL;
pes2videoes=NULL;
pause=false;
pause_retval=0;
min_needed=0;
skip=0;
queue = new cMarkAdPaketQueue(NULL,2176);
}
cMarkAdDemux::~cMarkAdDemux()
{
if (ts2pkt) delete ts2pkt;
if (pes2audioes) delete pes2audioes;
if (pes2videoes) delete pes2videoes;
if (queue) delete queue;
}
void cMarkAdDemux::Clear()
{
if (ts2pkt) ts2pkt->Clear();
if (pes2audioes) pes2audioes->Clear();
if (pes2videoes) pes2videoes->Clear();
if (queue) queue->Clear();
pause=false;
pause_retval=0;
min_needed=0;
skip=0;
}
void cMarkAdDemux::GetVideoPTS(uchar *Data, int Count, unsigned int *Timestamp)
{
if (!Data) return;
if (Count<=0) return;
if (!Timestamp) return;
struct PESHDR *peshdr=(struct PESHDR *) Data;
if ((peshdr->Sync1!=0) && (peshdr->Sync2!=0) && (peshdr->Sync3!=1)) return;
if ((peshdr->StreamID & 0xF0)!=0xE0) return;
struct PESHDROPT *peshdropt=(struct PESHDROPT *) &Data[sizeof(struct PESHDR)];
if (peshdropt->MarkerBits!=0x2) return;
if (peshdropt->PTSDTS<2) return;
struct PESHDROPTPTS *peshdroptpts=(struct PESHDROPTPTS *) &Data[sizeof(struct PESHDR)+
sizeof(struct PESHDROPT)];
if (peshdroptpts->Marker1 && peshdroptpts->Marker2 &&
peshdroptpts->Marker3)
{
unsigned int pts=0;
pts|=((peshdroptpts->PTS29_15_H<<7|peshdroptpts->PTS29_15_L)<<15);
pts|=(peshdroptpts->PTS14_0_H<<7|peshdroptpts->PTS14_0_L);
pts|=(peshdroptpts->PTS32_30<<30);
*Timestamp=pts;
}
return;
}
void cMarkAdDemux::ProcessVDR(MarkAdPid Pid, uchar *Data, int Count, MarkAdPacket *Pkt)
{
if (!Pkt) return;
if ((Pid.Type==MARKAD_PIDTYPE_AUDIO_AC3) || (Pid.Type==MARKAD_PIDTYPE_AUDIO_MP2))
{
if (!pes2audioes) pes2audioes=new cMarkAdPES2ES((Pid.Type==MARKAD_PIDTYPE_AUDIO_AC3) ?
"PES2ES AC3" : "PES2ES MP2");
if (!pes2audioes) return;
pes2audioes->Process(Pid,Data,Count,Pkt);
}
if ((Pid.Type==MARKAD_PIDTYPE_VIDEO_H262) || (Pid.Type==MARKAD_PIDTYPE_VIDEO_H264))
{
if (!pes2videoes)
{
if (Pid.Type==MARKAD_PIDTYPE_VIDEO_H264)
{
pes2videoes=new cMarkAdPES2ES("PES2H264ES",425984);
}
else
{
pes2videoes=new cMarkAdPES2ES("PES2H262ES",65536);
}
}
if (!pes2videoes) return;
pes2videoes->Process(Pid,Data,Count,Pkt);
}
return;
}
void cMarkAdDemux::ProcessTS(MarkAdPid Pid, uchar *Data, int Count, MarkAdPacket *Pkt)
{
if (!Pkt) return;
MarkAdPacket pkt;
memset(&pkt,0,sizeof(pkt));
if (!ts2pkt)
{
switch (Pid.Type)
{
case MARKAD_PIDTYPE_VIDEO_H264:
ts2pkt=new cMarkAdTS2Pkt("TS2H264",819200);
break;
case MARKAD_PIDTYPE_VIDEO_H262:
ts2pkt=new cMarkAdTS2Pkt("TS2H262",262144);
break;
case MARKAD_PIDTYPE_AUDIO_AC3:
ts2pkt=new cMarkAdTS2Pkt("TS2PES AC3",32768);
break;
case MARKAD_PIDTYPE_AUDIO_MP2:
ts2pkt=new cMarkAdTS2Pkt("TS2PES MP2",16384);
break;
}
}
if (!ts2pkt) return;
if (!ts2pkt->Process(Pid,Data,Count,&pkt))
{
if (pes2audioes) pes2audioes->Clear();
return;
}
if ((Pid.Type==MARKAD_PIDTYPE_AUDIO_AC3) || (Pid.Type==MARKAD_PIDTYPE_AUDIO_MP2))
{
if (!pes2audioes) pes2audioes=new cMarkAdPES2ES((Pid.Type==MARKAD_PIDTYPE_AUDIO_AC3) ?
"PES2ES AC3" : "PES2ES MP2");
if (!pes2audioes) return;
pes2audioes->Process(Pid,pkt.Data,pkt.Length,Pkt);
}
if ((Pid.Type==MARKAD_PIDTYPE_VIDEO_H262) || (Pid.Type==MARKAD_PIDTYPE_VIDEO_H264))
{
GetVideoPTS(pkt.Data,pkt.Length,&Pkt->Timestamp);
if ((pkt.Data) && ((pkt.Data[3] & 0xF0)==0xE0) && (pkt.Data[4]!=0) && (pkt.Data[5]!=0))
{
ts2pkt->InjectVideoPES(pkt.Data,pkt.Length);
pkt.Data=NULL;
pkt.Length=0;
}
Pkt->Data=pkt.Data;
Pkt->Length=pkt.Length;
}
return;
}
int cMarkAdDemux::GetMinNeeded(MarkAdPid Pid, uchar *Data, int Count, bool *Offcnt)
{
if (Pid.Num>=0) return TS_SIZE;
uchar *qData=queue->Peek(PESHDRSIZE);
if (!qData)
{
int len=PESHDRSIZE-queue->Length();
int cnt=(Count>len) ? len : Count;
queue->Put(Data,cnt);
return -cnt;
}
int stream=qData[3];
if ((qData[0]==0) && (qData[1]==0) && (qData[2]==1) && (stream>0xBC))
{
int needed=qData[4]*256+qData[5];
if (((Pid.Type==MARKAD_PIDTYPE_VIDEO_H262) ||
(Pid.Type==MARKAD_PIDTYPE_VIDEO_H264)) && ((stream & 0xF0)!=0xE0))
{
// ignore 6 header bytes from queue->Put above
queue->Clear();
if (Offcnt) *Offcnt=true;
return -needed;
}
if ((Pid.Type==MARKAD_PIDTYPE_AUDIO_MP2) && ((stream & 0xF0)!=0xC0))
{
// ignore 6 header bytes from queue->Put above
queue->Clear();
if (Offcnt) *Offcnt=true;
return -needed;
}
if ((Pid.Type==MARKAD_PIDTYPE_AUDIO_AC3) && (stream!=0xBD))
{
// ignore 6 header bytes from queue->Put above
queue->Clear();
if (Offcnt) *Offcnt=true;
return -needed;
}
return needed+PESHDRSIZE;
}
else
{
return -1; // skip one byte (maybe we get another header!)
}
}
int cMarkAdDemux::Process(MarkAdPid Pid, uchar *Data, int Count, MarkAdPacket *Pkt)
{
if ((!Data) && (!Count) && (!Pkt)) return -1;
uchar *in=NULL;
int inlen=0;
int retval=0;
if (!pause)
{
Pkt->Data=NULL;
Pkt->Length=0;
Pkt->Offcnt=false;
if (!min_needed)
{
if (skip)
{
int t_skip=skip;
skip=0;
Pkt->Offcnt=true;
return t_skip;
}
int t_min_needed=GetMinNeeded(Pid,Data,Count,&Pkt->Offcnt);
if (t_min_needed==0)
{
return -1;
}
if (t_min_needed<0)
{
if (-t_min_needed>Count)
{
skip=-t_min_needed-Count;
return Count;
}
return -t_min_needed;
}
min_needed=t_min_needed;
}
int needed=min_needed-queue->Length();
if (Count>needed)
{
queue->Put(Data,needed);
retval=needed;
}
else
{
queue->Put(Data,Count);
retval=Count;
}
if (queue->Length()<min_needed)
{
return Count;
}
inlen=min_needed;
in=queue->Get(&inlen);
min_needed=0;
}
if (Pid.Num>=0)
{
ProcessTS(Pid, in, inlen, Pkt);
}
else
{
ProcessVDR(Pid, in, inlen, Pkt);
}
if (Pkt->Data)
{
if (!pause_retval) pause_retval=retval;
pause=true;
return 0;
}
if (pause)
{
if (pause_retval)
{
retval=pause_retval;
pause_retval=0;
}
pause=false;
}
Pkt->Offcnt=true;
return retval;
}
|
