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-rw-r--r--pes2audioes.cpp273
1 files changed, 0 insertions, 273 deletions
diff --git a/pes2audioes.cpp b/pes2audioes.cpp
deleted file mode 100644
index e8cdde4..0000000
--- a/pes2audioes.cpp
+++ /dev/null
@@ -1,273 +0,0 @@
-/*
- * pes2audioes.cpp: A plugin for the Video Disk Recorder
- *
- * See the README file for copyright information and how to reach the author.
- *
- * $Id$
- */
-
-#include "pes2audioes.h"
-
-#include <stdio.h>
-
-cMarkAdPES2AudioES::cMarkAdPES2AudioES()
-{
- esdata=NULL;
- esdatalast=NULL;
- essize=0;
- data_left=false;
-}
-
-cMarkAdPES2AudioES::~cMarkAdPES2AudioES()
-{
- if (esdata) free(esdata);
- if (esdatalast) free(esdatalast);
-}
-
-void cMarkAdPES2AudioES::Reset()
-{
- if (esdata) free(esdata);
- esdata=NULL;
- essize=0;
- data_left=false;
-}
-
-int cMarkAdPES2AudioES::FindAudioHeader(uchar *ESData, int ESSize)
-{
- unsigned short scanner=0x0;
- int i;
- for (i=0; i<ESSize; i++)
- {
- scanner|=ESData[i];
- if ((scanner==0x0B77) || ((scanner & 0xFFE0)==0xFFE0))
- {
- break;
- }
- scanner<<=8;
-
- }
- if (i!=ESSize)
- {
- return i-1;
- }
- return -1;
-}
-
-
-bool cMarkAdPES2AudioES::IsValidAudioHeader(uchar *Data,int *FrameSize)
-{
- struct MP2HDR *mp2hdr = (struct MP2HDR *) Data;
- struct AC3HDR *ac3hdr = (struct AC3HDR *) Data;
-
- if ((ac3hdr->Sync1==0x0b) && (ac3hdr->Sync2==0x77))
- {
- if (ac3hdr->SampleRateIndex==3) return false; // reserved
- if (ac3hdr->FrameSizeIndex>=38) return false; // reserved
-
- if (FrameSize)
- {
- int bitRatesAC3[3][38] = // all values are specified as kbits/s
- {
- { 64, 64, 80, 80, 96, 96, 112, 112, 128, 128, 160, 160, 192, 192,
- 224, 224, 256, 256, 320, 320, 384, 384, 448, 448, 512, 512,
- 640, 640, 768, 768, 896, 896, 1024, 1024, 1152, 1152, 1280, 1280 }, // 48kHz
-
- { 69, 70, 87, 88, 104, 105, 121, 122, 139, 140, 174, 175, 208, 209,
- 243, 244, 278, 279, 348, 349, 417, 418, 487, 488, 557, 558,
- 696, 697, 835, 836, 975, 976, 1114, 1115, 1253, 1254, 1393, 1394 }, // 44.1kHz
-
- { 96, 96, 120, 120, 144, 144, 168, 168, 192, 192, 240, 240, 288,
- 288, 336, 336, 384, 384, 480, 480, 576, 576, 672, 672, 768,
- 768, 960, 960, 1152, 1152, 1344, 1344, 1536, 1536, 1728, 1728, 1920,1920 } // 32kHz
- };
-
- *FrameSize=2*bitRatesAC3[ac3hdr->SampleRateIndex][ac3hdr->FrameSizeIndex];
- }
-
- }
- else if ((mp2hdr->Sync1==0xFF) && (mp2hdr->Sync2==7))
- {
- if (mp2hdr->MpegID==1) return false; // reserved
- if (mp2hdr->Layer==0) return false; // reserved
- if (mp2hdr->BitRateIndex==0xF) return false; // forbidden
- if (mp2hdr->SampleRateIndex==3) return false; //reserved
- if (mp2hdr->Emphasis==2) return false; // reserved
-
- if (FrameSize)
- {
- int bitRates[3][3][16] = // all values are specified as kbits/s
- {
- {
- { 0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448, -1 }, // M1, L1
- { 0, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384, -1 }, // M1, L2
- { 0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, -1 } // M1, L3
- },
- {
- { 0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256, -1 }, // M2, L1
- { 0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160, -1 }, // M2, L2
- { 0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160, -1 } // M2, L3
- },
- {
- { 0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256, -1 }, // M2.5, L1
- { 0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160, -1 }, // M2.5, L2
- { 0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160, -1 } // M2.5, L3
- }
- };
-
- int samplingFrequencies[3][4] = // all values are specified in Hz
- {
- { 44100, 48000, 32000, -1 }, // MPEG 1
- { 22050, 24000, 16000, -1 }, // MPEG 2
- { 32000, 16000, 8000, -1 } // MPEG 2.5
- };
-
-
- int slots_per_frame[3][3] =
- {
- { 12, 144, 144 }, // MPEG 1, Layer I, II, III
- { 12, 144, 72 }, // MPEG 2, Layer I, II, III
- { 12, 144, 72 } // MPEG 2.5, Layer I, II, III
- };
-
- int mpegIndex;
- switch (mp2hdr->MpegID)
- {
- case 0:
- mpegIndex=2;
- break;
- case 2:
- mpegIndex=1;
- break;
- case 3:
- mpegIndex=0;
- break;
- default:
- mpegIndex=0; // just to get rid of compiler warnings ;)
- }
- int layerIndex = 3 - mp2hdr->Layer;
-
- // Layer I (i. e., layerIndex == 0) has a larger slot size
- int slotSize = (layerIndex == 0) ? 4 : 1; // bytes
- int sf = samplingFrequencies[mpegIndex][mp2hdr->SampleRateIndex];
-
- if (mp2hdr->BitRateIndex == 0)
- *FrameSize = 0; // "free" Bitrate -> we don't support this!
- else
- {
- int br = 1000 * bitRates[mpegIndex][layerIndex][mp2hdr->BitRateIndex]; // bits/s
- int N = slots_per_frame[mpegIndex][layerIndex] * br / sf; // slots
-
- *FrameSize = (N + mp2hdr->Padding) * slotSize; // bytes
- }
- }
- }
- else
- {
- return false;
- }
- return true;
-}
-
-int cMarkAdPES2AudioES::Process(uchar *PESData, int PESSize, uchar **ESData, int *ESSize)
-{
- if ((!ESData) || (!ESSize)) return -1;
- *ESData=NULL;
- *ESSize=0;
-
- int bytes_processed;
-
- if (!data_left)
- {
- struct PESHDR *peshdr=(struct PESHDR *) PESData;
-
- // first check some simple things
- if ((peshdr->Sync1!=0) && (peshdr->Sync2!=0) && (peshdr->Sync3!=1))
- {
- Reset();
- return PESSize;
- }
-
- if ((peshdr->StreamID<0xC0) && (peshdr->StreamID>0xDF))
- {
- if (peshdr->StreamID!=0xBD) return PESSize; // no audio
- }
-
- int Length=(peshdr->LenH<<8)+peshdr->LenL;
- if (Length>PESSize)
- {
- Reset();
- return PESSize;
- }
-
- struct PESHDROPT *peshdropt=(struct PESHDROPT *) &PESData[sizeof(struct PESHDR)];
-
- uchar *buf;
- int buflen;
-
- if (peshdropt->MarkerBits==0x2)
- {
- // we have an optional PES header
- int bpos=sizeof(struct PESHDR)+sizeof(struct PESHDROPT)+
- peshdropt->Length;
- buf=&PESData[bpos];
- buflen=PESSize-bpos;
- bytes_processed=bpos;
- }
- else
- {
- int bpos=sizeof(struct PESHDR);
- buf=&PESData[bpos];
- buflen=PESSize-bpos;
- bytes_processed=bpos;
- }
- esdata=(uchar *) realloc(esdata,essize+buflen);
- if (!esdata)
- {
- return -1;
- essize=0;
- }
- memcpy(esdata+essize,buf,buflen);
- essize+=buflen;
- bytes_processed+=buflen;
- }
- else
- {
- bytes_processed=essize;
- data_left=false;
- }
-
- int audiohdr=FindAudioHeader(esdata,essize);
- if (audiohdr!=-1)
- {
- int framesize;
- if (IsValidAudioHeader(&esdata[audiohdr],&framesize))
- {
- if ((essize-audiohdr)>=framesize)
- {
- *ESData=&esdata[audiohdr];
- *ESSize=framesize;
- if (esdatalast) free(esdatalast);
- esdatalast=esdata;
-
- int size=(essize-framesize-audiohdr);
-
- esdata=NULL;
- essize=0;
-
- if (size>0)
- {
- void *ptr=malloc(size);
- if (!ptr) return -1;
-
- memcpy(ptr,(*ESData)+framesize,size);
- bytes_processed-=size;
-
- esdata=(uchar *) ptr;
- essize=size;
- data_left=true;
- }
- }
- }
- }
- return bytes_processed;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2025-07-05 01:05:26 +0000