mirror of
https://github.com/vdr-projects/vdr.git
synced 2025-03-01 10:50:46 +00:00
09a17d56e2
- Changed the EVCONTENTMASK_* macros to enums and changed "mask" to "group". - Updated the Estonian OSD texts (thanks to Arthur Konovalov). - The "Edit timer" menu can now set the folder for the recording from a list of folders stored in "folders.conf". - Updated the Italian OSD texts (thanks to Diego Pierotto). - If svdrphosts.conf contains only the address of the local host, the SVDRP port is opened only for the local host (thanks to Manuel Reimer). - Renamed 'runvdr' to 'runvdr.template' and no longer copying it to the BINDIR in 'make install' (thanks to Martin Dauskardt). - Added plain text error messages to log entries from cOsd::SetAreas() (suggested by Rolf Ahrenberg). - cPalette::ClosestColor() now treats fully transparent colors as "equal"; improved cDvbSpuBitmap::getMinBpp() (thanks to Matthieu Castet and Johann Friedrichs). - The new setup option "Miscellaneous/Channels wrap" controls whether the current channel wraps around the beginning or end of the channel list when zapping (thanks to Matti Lehtimäki). - Fixed determining the frame duration on channels where the PTS deltas jitter by +/-1 around 1800. - The PCR pid in generated PMTs is now set to the channel's PCR pid again. - Fixed determining the frame duration on channels where the PTS deltas jitter by +/-1 around 3600. - The PCR pid is now recorded for channels where this is different from the video PID. To facilitate this, the interfaces of cTransfer, cTransferControl, cRecorder and cReceiver have been modified, so that the PIDs are no longer given in separate parameters, but rather the whole channel is handed down for processing. The old constructor of cReceiver is still available, but it is recommended to plugin authors that they switch to the new interface as soon as possible. When replaying such a recording, the PCR packets are sent to PlayTsVideo() - The files "commands.conf" and "reccmd.conf" can now contain nested lists of commands. See vdr.5 for information about the new file format.
971 lines
34 KiB
C
971 lines
34 KiB
C
/*
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* remux.h: Tools for detecting frames and handling PAT/PMT
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*
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* See the main source file 'vdr.c' for copyright information and
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* how to reach the author.
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*
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* $Id: remux.c 2.41 2010/01/30 10:43:12 kls Exp $
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*/
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#include "remux.h"
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#include "device.h"
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#include "libsi/si.h"
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#include "libsi/section.h"
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#include "libsi/descriptor.h"
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#include "shutdown.h"
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#include "tools.h"
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// Set these to 'true' for debug output:
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static bool DebugPatPmt = false;
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static bool DebugFrames = false;
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#define dbgpatpmt(a...) if (DebugPatPmt) fprintf(stderr, a)
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#define dbgframes(a...) if (DebugFrames) fprintf(stderr, a)
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ePesHeader AnalyzePesHeader(const uchar *Data, int Count, int &PesPayloadOffset, bool *ContinuationHeader)
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{
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if (Count < 7)
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return phNeedMoreData; // too short
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if ((Data[6] & 0xC0) == 0x80) { // MPEG 2
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if (Count < 9)
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return phNeedMoreData; // too short
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PesPayloadOffset = 6 + 3 + Data[8];
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if (Count < PesPayloadOffset)
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return phNeedMoreData; // too short
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if (ContinuationHeader)
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*ContinuationHeader = ((Data[6] == 0x80) && !Data[7] && !Data[8]);
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return phMPEG2; // MPEG 2
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}
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// check for MPEG 1 ...
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PesPayloadOffset = 6;
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// skip up to 16 stuffing bytes
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for (int i = 0; i < 16; i++) {
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if (Data[PesPayloadOffset] != 0xFF)
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break;
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if (Count <= ++PesPayloadOffset)
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return phNeedMoreData; // too short
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}
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// skip STD_buffer_scale/size
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if ((Data[PesPayloadOffset] & 0xC0) == 0x40) {
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PesPayloadOffset += 2;
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if (Count <= PesPayloadOffset)
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return phNeedMoreData; // too short
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}
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if (ContinuationHeader)
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*ContinuationHeader = false;
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if ((Data[PesPayloadOffset] & 0xF0) == 0x20) {
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// skip PTS only
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PesPayloadOffset += 5;
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}
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else if ((Data[PesPayloadOffset] & 0xF0) == 0x30) {
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// skip PTS and DTS
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PesPayloadOffset += 10;
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}
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else if (Data[PesPayloadOffset] == 0x0F) {
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// continuation header
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PesPayloadOffset++;
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if (ContinuationHeader)
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*ContinuationHeader = true;
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}
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else
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return phInvalid; // unknown
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if (Count < PesPayloadOffset)
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return phNeedMoreData; // too short
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return phMPEG1; // MPEG 1
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}
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#define VIDEO_STREAM_S 0xE0
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// --- cRemux ----------------------------------------------------------------
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void cRemux::SetBrokenLink(uchar *Data, int Length)
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{
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int PesPayloadOffset = 0;
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if (AnalyzePesHeader(Data, Length, PesPayloadOffset) >= phMPEG1 && (Data[3] & 0xF0) == VIDEO_STREAM_S) {
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for (int i = PesPayloadOffset; i < Length - 7; i++) {
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if (Data[i] == 0 && Data[i + 1] == 0 && Data[i + 2] == 1 && Data[i + 3] == 0xB8) {
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if (!(Data[i + 7] & 0x40)) // set flag only if GOP is not closed
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Data[i + 7] |= 0x20;
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return;
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}
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}
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dsyslog("SetBrokenLink: no GOP header found in video packet");
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}
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else
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dsyslog("SetBrokenLink: no video packet in frame");
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}
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// --- Some TS handling tools ------------------------------------------------
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int64_t TsGetPts(const uchar *p, int l)
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{
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// Find the first packet with a PTS and use it:
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while (l > 0) {
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const uchar *d = p;
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if (TsPayloadStart(d) && TsGetPayload(&d) && PesHasPts(d))
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return PesGetPts(d);
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p += TS_SIZE;
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l -= TS_SIZE;
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}
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return -1;
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}
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void TsSetTeiOnBrokenPackets(uchar *p, int l)
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{
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bool Processed[MAXPID] = { false };
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while (l >= TS_SIZE) {
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if (*p != TS_SYNC_BYTE)
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break;
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int Pid = TsPid(p);
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if (!Processed[Pid]) {
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if (!TsPayloadStart(p))
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p[1] |= TS_ERROR;
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else
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Processed[Pid] = true;
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}
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l -= TS_SIZE;
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p += TS_SIZE;
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}
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}
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// --- cPatPmtGenerator ------------------------------------------------------
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cPatPmtGenerator::cPatPmtGenerator(const cChannel *Channel)
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{
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numPmtPackets = 0;
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patCounter = pmtCounter = 0;
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patVersion = pmtVersion = 0;
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pmtPid = 0;
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esInfoLength = NULL;
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SetChannel(Channel);
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}
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void cPatPmtGenerator::IncCounter(int &Counter, uchar *TsPacket)
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{
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TsPacket[3] = (TsPacket[3] & 0xF0) | Counter;
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if (++Counter > 0x0F)
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Counter = 0x00;
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}
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void cPatPmtGenerator::IncVersion(int &Version)
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{
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if (++Version > 0x1F)
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Version = 0x00;
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}
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void cPatPmtGenerator::IncEsInfoLength(int Length)
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{
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if (esInfoLength) {
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Length += ((*esInfoLength & 0x0F) << 8) | *(esInfoLength + 1);
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*esInfoLength = 0xF0 | (Length >> 8);
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*(esInfoLength + 1) = Length;
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}
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}
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int cPatPmtGenerator::MakeStream(uchar *Target, uchar Type, int Pid)
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{
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int i = 0;
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Target[i++] = Type; // stream type
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Target[i++] = 0xE0 | (Pid >> 8); // dummy (3), pid hi (5)
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Target[i++] = Pid; // pid lo
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esInfoLength = &Target[i];
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Target[i++] = 0xF0; // dummy (4), ES info length hi
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Target[i++] = 0x00; // ES info length lo
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return i;
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}
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int cPatPmtGenerator::MakeAC3Descriptor(uchar *Target)
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{
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int i = 0;
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Target[i++] = SI::AC3DescriptorTag;
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Target[i++] = 0x01; // length
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Target[i++] = 0x00;
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IncEsInfoLength(i);
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return i;
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}
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int cPatPmtGenerator::MakeSubtitlingDescriptor(uchar *Target, const char *Language, uchar SubtitlingType, uint16_t CompositionPageId, uint16_t AncillaryPageId)
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{
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int i = 0;
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Target[i++] = SI::SubtitlingDescriptorTag;
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Target[i++] = 0x08; // length
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Target[i++] = *Language++;
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Target[i++] = *Language++;
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Target[i++] = *Language++;
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Target[i++] = SubtitlingType;
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Target[i++] = CompositionPageId >> 8;
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Target[i++] = CompositionPageId & 0xFF;
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Target[i++] = AncillaryPageId >> 8;
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Target[i++] = AncillaryPageId & 0xFF;
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IncEsInfoLength(i);
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return i;
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}
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int cPatPmtGenerator::MakeLanguageDescriptor(uchar *Target, const char *Language)
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{
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int i = 0;
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Target[i++] = SI::ISO639LanguageDescriptorTag;
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Target[i++] = 0x04; // length
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Target[i++] = *Language++;
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Target[i++] = *Language++;
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Target[i++] = *Language++;
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Target[i++] = 0x01; // audio type
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IncEsInfoLength(i);
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return i;
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}
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int cPatPmtGenerator::MakeCRC(uchar *Target, const uchar *Data, int Length)
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{
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int crc = SI::CRC32::crc32((const char *)Data, Length, 0xFFFFFFFF);
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int i = 0;
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Target[i++] = crc >> 24;
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Target[i++] = crc >> 16;
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Target[i++] = crc >> 8;
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Target[i++] = crc;
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return i;
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}
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#define P_TSID 0x8008 // pseudo TS ID
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#define P_PMT_PID 0x0084 // pseudo PMT pid
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#define MAXPID 0x2000 // the maximum possible number of pids
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void cPatPmtGenerator::GeneratePmtPid(const cChannel *Channel)
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{
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bool Used[MAXPID] = { false };
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#define SETPID(p) { if ((p) >= 0 && (p) < MAXPID) Used[p] = true; }
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#define SETPIDS(l) { const int *p = l; while (*p) { SETPID(*p); p++; } }
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SETPID(Channel->Vpid());
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SETPID(Channel->Ppid());
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SETPID(Channel->Tpid());
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SETPIDS(Channel->Apids());
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SETPIDS(Channel->Dpids());
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SETPIDS(Channel->Spids());
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for (pmtPid = P_PMT_PID; Used[pmtPid]; pmtPid++)
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;
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}
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void cPatPmtGenerator::GeneratePat(void)
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{
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memset(pat, 0xFF, sizeof(pat));
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uchar *p = pat;
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int i = 0;
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p[i++] = TS_SYNC_BYTE; // TS indicator
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p[i++] = TS_PAYLOAD_START | (PATPID >> 8); // flags (3), pid hi (5)
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p[i++] = PATPID & 0xFF; // pid lo
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p[i++] = 0x10; // flags (4), continuity counter (4)
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p[i++] = 0x00; // pointer field (payload unit start indicator is set)
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int PayloadStart = i;
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p[i++] = 0x00; // table id
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p[i++] = 0xB0; // section syntax indicator (1), dummy (3), section length hi (4)
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int SectionLength = i;
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p[i++] = 0x00; // section length lo (filled in later)
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p[i++] = P_TSID >> 8; // TS id hi
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p[i++] = P_TSID & 0xFF; // TS id lo
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p[i++] = 0xC1 | (patVersion << 1); // dummy (2), version number (5), current/next indicator (1)
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p[i++] = 0x00; // section number
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p[i++] = 0x00; // last section number
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p[i++] = pmtPid >> 8; // program number hi
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p[i++] = pmtPid & 0xFF; // program number lo
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p[i++] = 0xE0 | (pmtPid >> 8); // dummy (3), PMT pid hi (5)
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p[i++] = pmtPid & 0xFF; // PMT pid lo
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pat[SectionLength] = i - SectionLength - 1 + 4; // -2 = SectionLength storage, +4 = length of CRC
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MakeCRC(pat + i, pat + PayloadStart, i - PayloadStart);
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IncVersion(patVersion);
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}
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void cPatPmtGenerator::GeneratePmt(const cChannel *Channel)
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{
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// generate the complete PMT section:
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uchar buf[MAX_SECTION_SIZE];
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memset(buf, 0xFF, sizeof(buf));
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numPmtPackets = 0;
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if (Channel) {
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int Vpid = Channel->Vpid();
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int Ppid = Channel->Ppid();
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uchar *p = buf;
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int i = 0;
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p[i++] = 0x02; // table id
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int SectionLength = i;
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p[i++] = 0xB0; // section syntax indicator (1), dummy (3), section length hi (4)
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p[i++] = 0x00; // section length lo (filled in later)
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p[i++] = pmtPid >> 8; // program number hi
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p[i++] = pmtPid & 0xFF; // program number lo
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p[i++] = 0xC1 | (pmtVersion << 1); // dummy (2), version number (5), current/next indicator (1)
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p[i++] = 0x00; // section number
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p[i++] = 0x00; // last section number
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p[i++] = 0xE0 | (Ppid >> 8); // dummy (3), PCR pid hi (5)
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p[i++] = Ppid; // PCR pid lo
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p[i++] = 0xF0; // dummy (4), program info length hi (4)
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p[i++] = 0x00; // program info length lo
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if (Vpid)
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i += MakeStream(buf + i, Channel->Vtype(), Vpid);
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for (int n = 0; Channel->Apid(n); n++) {
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i += MakeStream(buf + i, 0x04, Channel->Apid(n));
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const char *Alang = Channel->Alang(n);
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i += MakeLanguageDescriptor(buf + i, Alang);
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if (Alang[3] == '+')
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i += MakeLanguageDescriptor(buf + i, Alang + 3);
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}
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for (int n = 0; Channel->Dpid(n); n++) {
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i += MakeStream(buf + i, 0x06, Channel->Dpid(n));
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i += MakeAC3Descriptor(buf + i);
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i += MakeLanguageDescriptor(buf + i, Channel->Dlang(n));
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}
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for (int n = 0; Channel->Spid(n); n++) {
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i += MakeStream(buf + i, 0x06, Channel->Spid(n));
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i += MakeSubtitlingDescriptor(buf + i, Channel->Slang(n), Channel->SubtitlingType(n), Channel->CompositionPageId(n), Channel->AncillaryPageId(n));
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}
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int sl = i - SectionLength - 2 + 4; // -2 = SectionLength storage, +4 = length of CRC
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buf[SectionLength] |= (sl >> 8) & 0x0F;
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buf[SectionLength + 1] = sl;
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MakeCRC(buf + i, buf, i);
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// split the PMT section into several TS packets:
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uchar *q = buf;
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bool pusi = true;
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while (i > 0) {
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uchar *p = pmt[numPmtPackets++];
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int j = 0;
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p[j++] = TS_SYNC_BYTE; // TS indicator
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p[j++] = (pusi ? TS_PAYLOAD_START : 0x00) | (pmtPid >> 8); // flags (3), pid hi (5)
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p[j++] = pmtPid & 0xFF; // pid lo
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p[j++] = 0x10; // flags (4), continuity counter (4)
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if (pusi) {
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p[j++] = 0x00; // pointer field (payload unit start indicator is set)
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pusi = false;
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}
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int l = TS_SIZE - j;
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memcpy(p + j, q, l);
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q += l;
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i -= l;
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}
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IncVersion(pmtVersion);
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}
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}
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void cPatPmtGenerator::SetVersions(int PatVersion, int PmtVersion)
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{
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patVersion = PatVersion & 0x1F;
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pmtVersion = PmtVersion & 0x1F;
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}
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void cPatPmtGenerator::SetChannel(const cChannel *Channel)
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{
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if (Channel) {
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GeneratePmtPid(Channel);
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GeneratePat();
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GeneratePmt(Channel);
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}
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}
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uchar *cPatPmtGenerator::GetPat(void)
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{
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IncCounter(patCounter, pat);
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return pat;
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}
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uchar *cPatPmtGenerator::GetPmt(int &Index)
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{
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if (Index < numPmtPackets) {
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IncCounter(pmtCounter, pmt[Index]);
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return pmt[Index++];
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}
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return NULL;
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}
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// --- cPatPmtParser ---------------------------------------------------------
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cPatPmtParser::cPatPmtParser(bool UpdatePrimaryDevice)
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{
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updatePrimaryDevice = UpdatePrimaryDevice;
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Reset();
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}
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void cPatPmtParser::Reset(void)
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{
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pmtSize = 0;
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patVersion = pmtVersion = -1;
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pmtPid = -1;
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vpid = vtype = 0;
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ppid = 0;
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}
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void cPatPmtParser::ParsePat(const uchar *Data, int Length)
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{
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// Unpack the TS packet:
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int PayloadOffset = TsPayloadOffset(Data);
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Data += PayloadOffset;
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Length -= PayloadOffset;
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// The PAT is always assumed to fit into a single TS packet
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if ((Length -= Data[0] + 1) <= 0)
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return;
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Data += Data[0] + 1; // process pointer_field
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SI::PAT Pat(Data, false);
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if (Pat.CheckCRCAndParse()) {
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dbgpatpmt("PAT: TSid = %d, c/n = %d, v = %d, s = %d, ls = %d\n", Pat.getTransportStreamId(), Pat.getCurrentNextIndicator(), Pat.getVersionNumber(), Pat.getSectionNumber(), Pat.getLastSectionNumber());
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if (patVersion == Pat.getVersionNumber())
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return;
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SI::PAT::Association assoc;
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for (SI::Loop::Iterator it; Pat.associationLoop.getNext(assoc, it); ) {
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dbgpatpmt(" isNITPid = %d\n", assoc.isNITPid());
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if (!assoc.isNITPid()) {
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pmtPid = assoc.getPid();
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dbgpatpmt(" service id = %d, pid = %d\n", assoc.getServiceId(), assoc.getPid());
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}
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}
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patVersion = Pat.getVersionNumber();
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}
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else
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esyslog("ERROR: can't parse PAT");
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}
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void cPatPmtParser::ParsePmt(const uchar *Data, int Length)
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{
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// Unpack the TS packet:
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bool PayloadStart = TsPayloadStart(Data);
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int PayloadOffset = TsPayloadOffset(Data);
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Data += PayloadOffset;
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Length -= PayloadOffset;
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// The PMT may extend over several TS packets, so we need to assemble them
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if (PayloadStart) {
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pmtSize = 0;
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if ((Length -= Data[0] + 1) <= 0)
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return;
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Data += Data[0] + 1; // this is the first packet
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if (SectionLength(Data, Length) > Length) {
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if (Length <= int(sizeof(pmt))) {
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memcpy(pmt, Data, Length);
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pmtSize = Length;
|
|
}
|
|
else
|
|
esyslog("ERROR: PMT packet length too big (%d byte)!", Length);
|
|
return;
|
|
}
|
|
// the packet contains the entire PMT section, so we run into the actual parsing
|
|
}
|
|
else if (pmtSize > 0) {
|
|
// this is a following packet, so we add it to the pmt storage
|
|
if (Length <= int(sizeof(pmt)) - pmtSize) {
|
|
memcpy(pmt + pmtSize, Data, Length);
|
|
pmtSize += Length;
|
|
}
|
|
else {
|
|
esyslog("ERROR: PMT section length too big (%d byte)!", pmtSize + Length);
|
|
pmtSize = 0;
|
|
}
|
|
if (SectionLength(pmt, pmtSize) > pmtSize)
|
|
return; // more packets to come
|
|
// the PMT section is now complete, so we run into the actual parsing
|
|
Data = pmt;
|
|
}
|
|
else
|
|
return; // fragment of broken packet - ignore
|
|
SI::PMT Pmt(Data, false);
|
|
if (Pmt.CheckCRCAndParse()) {
|
|
dbgpatpmt("PMT: sid = %d, c/n = %d, v = %d, s = %d, ls = %d\n", Pmt.getServiceId(), Pmt.getCurrentNextIndicator(), Pmt.getVersionNumber(), Pmt.getSectionNumber(), Pmt.getLastSectionNumber());
|
|
dbgpatpmt(" pcr = %d\n", Pmt.getPCRPid());
|
|
if (pmtVersion == Pmt.getVersionNumber())
|
|
return;
|
|
if (updatePrimaryDevice)
|
|
cDevice::PrimaryDevice()->ClrAvailableTracks(false, true);
|
|
int NumApids = 0;
|
|
int NumDpids = 0;
|
|
int NumSpids = 0;
|
|
vpid = vtype = 0;
|
|
ppid = 0;
|
|
apids[0] = 0;
|
|
dpids[0] = 0;
|
|
spids[0] = 0;
|
|
atypes[0] = 0;
|
|
dtypes[0] = 0;
|
|
SI::PMT::Stream stream;
|
|
for (SI::Loop::Iterator it; Pmt.streamLoop.getNext(stream, it); ) {
|
|
dbgpatpmt(" stream type = %02X, pid = %d", stream.getStreamType(), stream.getPid());
|
|
switch (stream.getStreamType()) {
|
|
case 0x01: // STREAMTYPE_11172_VIDEO
|
|
case 0x02: // STREAMTYPE_13818_VIDEO
|
|
case 0x1B: // MPEG4
|
|
vpid = stream.getPid();
|
|
vtype = stream.getStreamType();
|
|
ppid = Pmt.getPCRPid();
|
|
break;
|
|
case 0x03: // STREAMTYPE_11172_AUDIO
|
|
case 0x04: // STREAMTYPE_13818_AUDIO
|
|
{
|
|
if (NumApids < MAXAPIDS) {
|
|
apids[NumApids] = stream.getPid();
|
|
atypes[NumApids] = stream.getStreamType();
|
|
*alangs[NumApids] = 0;
|
|
SI::Descriptor *d;
|
|
for (SI::Loop::Iterator it; (d = stream.streamDescriptors.getNext(it)); ) {
|
|
switch (d->getDescriptorTag()) {
|
|
case SI::ISO639LanguageDescriptorTag: {
|
|
SI::ISO639LanguageDescriptor *ld = (SI::ISO639LanguageDescriptor *)d;
|
|
SI::ISO639LanguageDescriptor::Language l;
|
|
char *s = alangs[NumApids];
|
|
int n = 0;
|
|
for (SI::Loop::Iterator it; ld->languageLoop.getNext(l, it); ) {
|
|
if (*ld->languageCode != '-') { // some use "---" to indicate "none"
|
|
dbgpatpmt(" '%s'", l.languageCode);
|
|
if (n > 0)
|
|
*s++ = '+';
|
|
strn0cpy(s, I18nNormalizeLanguageCode(l.languageCode), MAXLANGCODE1);
|
|
s += strlen(s);
|
|
if (n++ > 1)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
default: ;
|
|
}
|
|
delete d;
|
|
}
|
|
if (updatePrimaryDevice)
|
|
cDevice::PrimaryDevice()->SetAvailableTrack(ttAudio, NumApids, apids[NumApids], alangs[NumApids]);
|
|
NumApids++;
|
|
apids[NumApids]= 0;
|
|
}
|
|
}
|
|
break;
|
|
case 0x06: // STREAMTYPE_13818_PES_PRIVATE
|
|
{
|
|
int dpid = 0;
|
|
char lang[MAXLANGCODE1] = "";
|
|
SI::Descriptor *d;
|
|
for (SI::Loop::Iterator it; (d = stream.streamDescriptors.getNext(it)); ) {
|
|
switch (d->getDescriptorTag()) {
|
|
case SI::AC3DescriptorTag:
|
|
dbgpatpmt(" AC3");
|
|
dpid = stream.getPid();
|
|
break;
|
|
case SI::SubtitlingDescriptorTag:
|
|
dbgpatpmt(" subtitling");
|
|
if (NumSpids < MAXSPIDS) {
|
|
spids[NumSpids] = stream.getPid();
|
|
*slangs[NumSpids] = 0;
|
|
subtitlingTypes[NumSpids] = 0;
|
|
compositionPageIds[NumSpids] = 0;
|
|
ancillaryPageIds[NumSpids] = 0;
|
|
SI::SubtitlingDescriptor *sd = (SI::SubtitlingDescriptor *)d;
|
|
SI::SubtitlingDescriptor::Subtitling sub;
|
|
char *s = slangs[NumSpids];
|
|
int n = 0;
|
|
for (SI::Loop::Iterator it; sd->subtitlingLoop.getNext(sub, it); ) {
|
|
if (sub.languageCode[0]) {
|
|
dbgpatpmt(" '%s'", sub.languageCode);
|
|
subtitlingTypes[NumSpids] = sub.getSubtitlingType();
|
|
compositionPageIds[NumSpids] = sub.getCompositionPageId();
|
|
ancillaryPageIds[NumSpids] = sub.getAncillaryPageId();
|
|
if (n > 0)
|
|
*s++ = '+';
|
|
strn0cpy(s, I18nNormalizeLanguageCode(sub.languageCode), MAXLANGCODE1);
|
|
s += strlen(s);
|
|
if (n++ > 1)
|
|
break;
|
|
}
|
|
}
|
|
if (updatePrimaryDevice)
|
|
cDevice::PrimaryDevice()->SetAvailableTrack(ttSubtitle, NumSpids, spids[NumSpids], slangs[NumSpids]);
|
|
NumSpids++;
|
|
spids[NumSpids]= 0;
|
|
}
|
|
break;
|
|
case SI::ISO639LanguageDescriptorTag: {
|
|
SI::ISO639LanguageDescriptor *ld = (SI::ISO639LanguageDescriptor *)d;
|
|
dbgpatpmt(" '%s'", ld->languageCode);
|
|
strn0cpy(lang, I18nNormalizeLanguageCode(ld->languageCode), MAXLANGCODE1);
|
|
}
|
|
break;
|
|
default: ;
|
|
}
|
|
delete d;
|
|
}
|
|
if (dpid) {
|
|
if (NumDpids < MAXDPIDS) {
|
|
dpids[NumDpids] = dpid;
|
|
dtypes[NumDpids] = stream.getStreamType();
|
|
strn0cpy(dlangs[NumDpids], lang, sizeof(dlangs[NumDpids]));
|
|
if (updatePrimaryDevice)
|
|
cDevice::PrimaryDevice()->SetAvailableTrack(ttDolby, NumDpids, dpid, lang);
|
|
NumDpids++;
|
|
dpids[NumDpids]= 0;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
default: ;
|
|
}
|
|
dbgpatpmt("\n");
|
|
if (updatePrimaryDevice) {
|
|
cDevice::PrimaryDevice()->EnsureAudioTrack(true);
|
|
cDevice::PrimaryDevice()->EnsureSubtitleTrack();
|
|
}
|
|
}
|
|
pmtVersion = Pmt.getVersionNumber();
|
|
}
|
|
else
|
|
esyslog("ERROR: can't parse PMT");
|
|
pmtSize = 0;
|
|
}
|
|
|
|
bool cPatPmtParser::GetVersions(int &PatVersion, int &PmtVersion) const
|
|
{
|
|
PatVersion = patVersion;
|
|
PmtVersion = pmtVersion;
|
|
return patVersion >= 0 && pmtVersion >= 0;
|
|
}
|
|
|
|
// --- cTsToPes --------------------------------------------------------------
|
|
|
|
cTsToPes::cTsToPes(void)
|
|
{
|
|
data = NULL;
|
|
size = 0;
|
|
Reset();
|
|
}
|
|
|
|
cTsToPes::~cTsToPes()
|
|
{
|
|
free(data);
|
|
}
|
|
|
|
void cTsToPes::PutTs(const uchar *Data, int Length)
|
|
{
|
|
if (TsError(Data)) {
|
|
Reset();
|
|
return; // ignore packets with TEI set, and drop any PES data collected so far
|
|
}
|
|
if (TsPayloadStart(Data))
|
|
Reset();
|
|
else if (!size)
|
|
return; // skip everything before the first payload start
|
|
Length = TsGetPayload(&Data);
|
|
if (length + Length > size) {
|
|
size = max(KILOBYTE(2), length + Length);
|
|
data = (uchar *)realloc(data, size);
|
|
}
|
|
memcpy(data + length, Data, Length);
|
|
length += Length;
|
|
}
|
|
|
|
#define MAXPESLENGTH 0xFFF0
|
|
|
|
const uchar *cTsToPes::GetPes(int &Length)
|
|
{
|
|
if (repeatLast) {
|
|
repeatLast = false;
|
|
Length = lastLength;
|
|
return lastData;
|
|
}
|
|
if (offset < length && PesLongEnough(length)) {
|
|
if (!PesHasLength(data)) // this is a video PES packet with undefined length
|
|
offset = 6; // trigger setting PES length for initial slice
|
|
if (offset) {
|
|
uchar *p = data + offset - 6;
|
|
if (p != data) {
|
|
p -= 3;
|
|
memmove(p, data, 4);
|
|
}
|
|
int l = min(length - offset, MAXPESLENGTH);
|
|
offset += l;
|
|
if (p != data) {
|
|
l += 3;
|
|
p[6] = 0x80;
|
|
p[7] = 0x00;
|
|
p[8] = 0x00;
|
|
}
|
|
p[4] = l / 256;
|
|
p[5] = l & 0xFF;
|
|
Length = l + 6;
|
|
lastLength = Length;
|
|
lastData = p;
|
|
return p;
|
|
}
|
|
else {
|
|
Length = PesLength(data);
|
|
if (Length <= length) {
|
|
offset = Length; // to make sure we break out in case of garbage data
|
|
lastLength = Length;
|
|
lastData = data;
|
|
return data;
|
|
}
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
void cTsToPes::SetRepeatLast(void)
|
|
{
|
|
repeatLast = true;
|
|
}
|
|
|
|
void cTsToPes::Reset(void)
|
|
{
|
|
length = offset = 0;
|
|
lastData = NULL;
|
|
lastLength = 0;
|
|
repeatLast = false;
|
|
}
|
|
|
|
// --- Some helper functions for debugging -----------------------------------
|
|
|
|
void BlockDump(const char *Name, const u_char *Data, int Length)
|
|
{
|
|
printf("--- %s\n", Name);
|
|
for (int i = 0; i < Length; i++) {
|
|
if (i && (i % 16) == 0)
|
|
printf("\n");
|
|
printf(" %02X", Data[i]);
|
|
}
|
|
printf("\n");
|
|
}
|
|
|
|
void TsDump(const char *Name, const u_char *Data, int Length)
|
|
{
|
|
printf("%s: %04X", Name, Length);
|
|
int n = min(Length, 20);
|
|
for (int i = 0; i < n; i++)
|
|
printf(" %02X", Data[i]);
|
|
if (n < Length) {
|
|
printf(" ...");
|
|
n = max(n, Length - 10);
|
|
for (n = max(n, Length - 10); n < Length; n++)
|
|
printf(" %02X", Data[n]);
|
|
}
|
|
printf("\n");
|
|
}
|
|
|
|
void PesDump(const char *Name, const u_char *Data, int Length)
|
|
{
|
|
TsDump(Name, Data, Length);
|
|
}
|
|
|
|
// --- cFrameDetector --------------------------------------------------------
|
|
|
|
#define EMPTY_SCANNER (0xFFFFFFFF)
|
|
|
|
cFrameDetector::cFrameDetector(int Pid, int Type)
|
|
{
|
|
SetPid(Pid, Type);
|
|
synced = false;
|
|
newFrame = independentFrame = false;
|
|
numPtsValues = 0;
|
|
numIFrames = 0;
|
|
frameDuration = 0;
|
|
framesInPayloadUnit = framesPerPayloadUnit = 0;
|
|
payloadUnitOfFrame = 0;
|
|
scanning = false;
|
|
scanner = EMPTY_SCANNER;
|
|
}
|
|
|
|
static int CmpUint32(const void *p1, const void *p2)
|
|
{
|
|
if (*(uint32_t *)p1 < *(uint32_t *)p2) return -1;
|
|
if (*(uint32_t *)p1 > *(uint32_t *)p2) return 1;
|
|
return 0;
|
|
}
|
|
|
|
void cFrameDetector::SetPid(int Pid, int Type)
|
|
{
|
|
pid = Pid;
|
|
type = Type;
|
|
isVideo = type == 0x01 || type == 0x02 || type == 0x1B; // MPEG 1, 2 or 4
|
|
}
|
|
|
|
void cFrameDetector::Reset(void)
|
|
{
|
|
newFrame = independentFrame = false;
|
|
payloadUnitOfFrame = 0;
|
|
scanning = false;
|
|
scanner = EMPTY_SCANNER;
|
|
}
|
|
|
|
int cFrameDetector::Analyze(const uchar *Data, int Length)
|
|
{
|
|
int SeenPayloadStart = false;
|
|
int Processed = 0;
|
|
newFrame = independentFrame = false;
|
|
while (Length >= TS_SIZE) {
|
|
if (Data[0] != TS_SYNC_BYTE) {
|
|
int Skipped = 1;
|
|
while (Skipped < Length && (Data[Skipped] != TS_SYNC_BYTE || Length - Skipped > TS_SIZE && Data[Skipped + TS_SIZE] != TS_SYNC_BYTE))
|
|
Skipped++;
|
|
esyslog("ERROR: skipped %d bytes to sync on start of TS packet", Skipped);
|
|
return Processed + Skipped;
|
|
}
|
|
if (TsHasPayload(Data) && !TsIsScrambled(Data)) {
|
|
int Pid = TsPid(Data);
|
|
if (Pid == pid) {
|
|
if (TsPayloadStart(Data)) {
|
|
SeenPayloadStart = true;
|
|
if (synced && Processed)
|
|
return Processed;
|
|
if (Length < MIN_TS_PACKETS_FOR_FRAME_DETECTOR * TS_SIZE)
|
|
return 0; // need more data, in case the frame type is not stored in the first TS packet
|
|
if (!frameDuration) {
|
|
// frame duration unknown, so collect a sequence of PTS values:
|
|
if (numPtsValues < MaxPtsValues && numIFrames < 2) { // collect a sequence containing at least two I-frames
|
|
const uchar *Pes = Data + TsPayloadOffset(Data);
|
|
if (PesHasPts(Pes)) {
|
|
ptsValues[numPtsValues] = PesGetPts(Pes);
|
|
// check for rollover:
|
|
if (numPtsValues && ptsValues[numPtsValues - 1] > 0xF0000000 && ptsValues[numPtsValues] < 0x10000000) {
|
|
dbgframes("#");
|
|
numPtsValues = 0;
|
|
numIFrames = 0;
|
|
}
|
|
else
|
|
numPtsValues++;
|
|
}
|
|
}
|
|
else {
|
|
// find the smallest PTS delta:
|
|
qsort(ptsValues, numPtsValues, sizeof(uint32_t), CmpUint32);
|
|
numPtsValues--;
|
|
for (int i = 0; i < numPtsValues; i++)
|
|
ptsValues[i] = ptsValues[i + 1] - ptsValues[i];
|
|
qsort(ptsValues, numPtsValues, sizeof(uint32_t), CmpUint32);
|
|
uint32_t Delta = ptsValues[0];
|
|
// determine frame info:
|
|
if (isVideo) {
|
|
if (Delta % 3600 == 0)
|
|
frameDuration = 3600; // PAL, 25 fps, exact timing
|
|
else if (abs(Delta % 3600) == 3599 || abs(Delta % 3600) == 1)
|
|
frameDuration = 3600; // PAL, 25 fps, timing with jitter
|
|
else if (Delta % 3003 == 0)
|
|
frameDuration = 3003; // NTSC, 29.97 fps
|
|
else if (abs(Delta - 1800) <= 1) {
|
|
frameDuration = 3600; // PAL, 25 fps
|
|
framesPerPayloadUnit = -2;
|
|
}
|
|
else if (Delta == 1501) {
|
|
frameDuration = 3003; // NTSC, 29.97 fps
|
|
framesPerPayloadUnit = -2;
|
|
}
|
|
else {
|
|
frameDuration = 3600; // unknown, assuming 25 fps
|
|
dsyslog("unknown frame duration (%d), assuming 25 fps", Delta);
|
|
}
|
|
}
|
|
else // audio
|
|
frameDuration = Delta; // PTS of audio frames is always increasing
|
|
dbgframes("\nframe duration = %d FPS = %5.2f FPPU = %d\n", frameDuration, 90000.0 / frameDuration, framesPerPayloadUnit);
|
|
}
|
|
}
|
|
scanner = EMPTY_SCANNER;
|
|
scanning = true;
|
|
}
|
|
if (scanning) {
|
|
int PayloadOffset = TsPayloadOffset(Data);
|
|
if (TsPayloadStart(Data)) {
|
|
PayloadOffset += PesPayloadOffset(Data + PayloadOffset);
|
|
if (!framesPerPayloadUnit)
|
|
framesPerPayloadUnit = framesInPayloadUnit;
|
|
if (DebugFrames && !synced)
|
|
dbgframes("/");
|
|
}
|
|
for (int i = PayloadOffset; scanning && i < TS_SIZE; i++) {
|
|
scanner <<= 8;
|
|
scanner |= Data[i];
|
|
switch (type) {
|
|
case 0x01: // MPEG 1 video
|
|
case 0x02: // MPEG 2 video
|
|
if (scanner == 0x00000100) { // Picture Start Code
|
|
scanner = EMPTY_SCANNER;
|
|
if (synced && !SeenPayloadStart && Processed)
|
|
return Processed; // flush everything before this new frame
|
|
newFrame = true;
|
|
independentFrame = ((Data[i + 2] >> 3) & 0x07) == 1; // I-Frame
|
|
if (synced) {
|
|
if (framesPerPayloadUnit <= 1)
|
|
scanning = false;
|
|
}
|
|
else {
|
|
framesInPayloadUnit++;
|
|
if (independentFrame)
|
|
numIFrames++;
|
|
dbgframes("%d ", (Data[i + 2] >> 3) & 0x07);
|
|
}
|
|
if (synced)
|
|
return Processed + TS_SIZE; // flag this new frame
|
|
}
|
|
break;
|
|
case 0x1B: // MPEG 4 video
|
|
if (scanner == 0x00000109) { // Access Unit Delimiter
|
|
scanner = EMPTY_SCANNER;
|
|
if (synced && !SeenPayloadStart && Processed)
|
|
return Processed; // flush everything before this new frame
|
|
newFrame = true;
|
|
independentFrame = Data[i + 1] == 0x10;
|
|
if (synced) {
|
|
if (framesPerPayloadUnit < 0) {
|
|
payloadUnitOfFrame = (payloadUnitOfFrame + 1) % -framesPerPayloadUnit;
|
|
if (payloadUnitOfFrame != 0 && independentFrame)
|
|
payloadUnitOfFrame = 0;
|
|
if (payloadUnitOfFrame)
|
|
newFrame = false;
|
|
}
|
|
if (framesPerPayloadUnit <= 1)
|
|
scanning = false;
|
|
}
|
|
else {
|
|
framesInPayloadUnit++;
|
|
if (independentFrame)
|
|
numIFrames++;
|
|
dbgframes("%02X ", Data[i + 1]);
|
|
}
|
|
if (synced)
|
|
return Processed + TS_SIZE; // flag this new frame
|
|
}
|
|
break;
|
|
case 0x04: // MPEG audio
|
|
case 0x06: // AC3 audio
|
|
if (synced && Processed)
|
|
return Processed;
|
|
newFrame = true;
|
|
independentFrame = true;
|
|
if (!synced) {
|
|
framesInPayloadUnit = 1;
|
|
if (TsPayloadStart(Data))
|
|
numIFrames++;
|
|
}
|
|
scanning = false;
|
|
break;
|
|
default: esyslog("ERROR: unknown stream type %d (PID %d) in frame detector", type, pid);
|
|
pid = 0; // let's just ignore any further data
|
|
}
|
|
}
|
|
if (!synced && frameDuration && independentFrame) {
|
|
synced = true;
|
|
dbgframes("*");
|
|
Reset();
|
|
return Processed + TS_SIZE;
|
|
}
|
|
}
|
|
}
|
|
else if (Pid == PATPID && synced && Processed)
|
|
return Processed; // allow the caller to see any PAT packets
|
|
}
|
|
Data += TS_SIZE;
|
|
Length -= TS_SIZE;
|
|
Processed += TS_SIZE;
|
|
}
|
|
return Processed;
|
|
}
|