diff options
-rw-r--r-- | CONTRIBUTORS | 1 | ||||
-rw-r--r-- | HISTORY | 5 | ||||
-rw-r--r-- | dvbapi.c | 449 | ||||
-rw-r--r-- | ringbuffer.c | 5 | ||||
-rw-r--r-- | ringbuffer.h | 8 |
5 files changed, 257 insertions, 211 deletions
diff --git a/CONTRIBUTORS b/CONTRIBUTORS index 473985c7..8d444645 100644 --- a/CONTRIBUTORS +++ b/CONTRIBUTORS @@ -115,6 +115,7 @@ Helmut Schächner <schaechner@yahoo.com> Andreas Schultz <aschultz@warp10.net> for adding support for replaying DVDs (much of this was derived from dvdplayer-0.5 by Matjaz Thaler <matjaz.thaler@guest.arnes.si>) + for adding PTS to the converted PCM audio when replaying a DVD Aaron Holtzman for writing 'ac3dec' @@ -831,7 +831,7 @@ Video Disk Recorder Revision History - Fixed handling trick modes near the beginning and end of a recording. - Pressing the "Back" button while replaying a DVD now leads to the DVD menu. -2001-10-28: Version 0.98 +2001-11-03: Version 0.98 - Completed storing the current audio volume in the setup.conf file (thanks to Andy Grobb). @@ -851,3 +851,6 @@ Video Disk Recorder Revision History on an other free DVB card (if one is free at the moment). See MANUAL for details. - Added some missing teletext PIDs (thanks to Norbert Schmidt). +- Added PTS to the converted PCM audio when replaying a DVD (thanks to Andreas + Schultz). Now the audio and video of a DVD replayed over the DVB card's A/V + out should always be in sync. @@ -7,7 +7,7 @@ * DVD support initially written by Andreas Schultz <aschultz@warp10.net> * based on dvdplayer-0.5 by Matjaz Thaler <matjaz.thaler@guest.arnes.si> * - * $Id: dvbapi.c 1.133 2001/10/27 13:00:29 kls Exp $ + * $Id: dvbapi.c 1.134 2001/11/03 10:59:34 kls Exp $ */ //#define DVDDEBUG 1 @@ -713,7 +713,10 @@ protected: void TrickSpeed(int Increment); virtual void Empty(bool Block = false); virtual void StripAudioPackets(uchar *b, int Length, uchar Except = 0x00) {} + virtual void PlayExternalDolby(const uchar *b, int MaxLength); virtual void Output(void); + void putFrame(cFrame *Frame); + void putFrame(unsigned char *Data, int Length, eFrameType Type = ftUnknown); public: cPlayBuffer(cDvbApi *DvbApi, int VideoDev, int AudioDev); virtual ~cPlayBuffer(); @@ -759,6 +762,28 @@ cPlayBuffer::~cPlayBuffer() { } +void cPlayBuffer::PlayExternalDolby(const uchar *b, int MaxLength) +{ + if (dolbyDev) { + if (b[0] == 0x00 && b[1] == 0x00 && b[2] == 0x01) { + if (b[3] == 0xBD) { // dolby + int l = b[4] * 256 + b[5] + 6; + int written = b[8] + 9; // skips the PES header + int n = min(l - written, MaxLength); + while (n > 0) { + int w = fwrite(&b[written], 1, n, dolbyDev); + if (w < 0) { + LOG_ERROR; + break; + } + n -= w; + written += w; + } + } + } + } +} + void cPlayBuffer::Output(void) { dsyslog(LOG_INFO, "output thread started (pid=%d)", getpid()); @@ -771,24 +796,28 @@ void cPlayBuffer::Output(void) } const cFrame *frame = Get(); if (frame) { - StripAudioPackets((uchar *)frame->Data(), frame->Count(), (playMode == pmFast || playMode == pmSlow) ? 0x00 : audioTrack);//XXX - const uchar *p = frame->Data(); - int r = frame->Count(); - while (r > 0 && Busy() && !blockOutput) { - cFile::FileReadyForWriting(videoDev, 100); - int w = write(videoDev, p, r); - if (w > 0) { - p += w; - r -= w; - } - else if (w < 0 && FATALERRNO) { - LOG_ERROR; - Stop(); - return; + if (frame->Type() == ftDolby) + PlayExternalDolby(frame->Data(), frame->Count()); + else { + StripAudioPackets((uchar *)frame->Data(), frame->Count(), (playMode == pmFast || playMode == pmSlow) ? 0x00 : audioTrack);//XXX + const uchar *p = frame->Data(); + int r = frame->Count(); + while (r > 0 && Busy() && !blockOutput) { + cFile::FileReadyForWriting(videoDev, 100); + int w = write(videoDev, p, r); + if (w > 0) { + p += w; + r -= w; + } + else if (w < 0 && FATALERRNO) { + LOG_ERROR; + Stop(); + return; + } } - } - writeIndex = frame->Index(); - backTrace.Add(frame->Index(), frame->Count()); + writeIndex = frame->Index(); + backTrace.Add(frame->Index(), frame->Count()); + } Drop(frame); } } @@ -796,6 +825,20 @@ void cPlayBuffer::Output(void) dsyslog(LOG_INFO, "output thread ended (pid=%d)", getpid()); } +void cPlayBuffer::putFrame(cFrame *Frame) +{ + while (Busy() && !blockInput) { + if (Put(Frame)) + return; + } + delete Frame; // caller relies on frame being put, otherwise this would be a memory leak! +} + +void cPlayBuffer::putFrame(unsigned char *Data, int Length, eFrameType Type) +{ + putFrame(new cFrame(Data, Length, Type)); +} + void cPlayBuffer::TrickSpeed(int Increment) { int nts = trickSpeed + Increment; @@ -1089,11 +1132,8 @@ void cReplayBuffer::Input(void) } else // allows replay even if the index file is missing r = read(replayFile, b, sizeof(b)); - if (r > 0) { - cFrame *frame = new cFrame(b, r, readIndex); - while (Busy() && !blockInput && !Put(frame)) - ; - } + if (r > 0) + putFrame(new cFrame(b, r, ftUnknown, readIndex)); else if (r == 0) eof = true; else if (r < 0 && FATALERRNO) { @@ -1117,19 +1157,8 @@ void cReplayBuffer::StripAudioPackets(uchar *b, int Length, uchar Except) int l = b[i + 4] * 256 + b[i + 5] + 6; switch (c) { case 0xBD: // dolby - if (Except && dolbyDev) { - int written = b[i + 8] + 9; // skips the PES header - int n = l - written; - while (n > 0) { - int w = fwrite(&b[i + written], 1, n, dolbyDev); - if (w < 0) { - LOG_ERROR; - break; - } - n -= w; - written += w; - } - } + if (Except && dolbyDev) + PlayExternalDolby(&b[i], Length - i); // continue with deleting the data - otherwise it disturbs DVB replay case 0xC0 ... 0xC1: // audio if (c == 0xC1) @@ -1290,10 +1319,166 @@ bool cReplayBuffer::NextFile(uchar FileNumber, int FileOffset) } #ifdef DVDSUPPORT + +#define SYSTEM_HEADER 0xBB +#define PROG_STREAM_MAP 0xBC +#ifndef PRIVATE_STREAM1 +#define PRIVATE_STREAM1 0xBD +#endif +#define PADDING_STREAM 0xBE +#ifndef PRIVATE_STREAM2 +#define PRIVATE_STREAM2 0xBF +#endif +#define AUDIO_STREAM_S 0xC0 +#define AUDIO_STREAM_E 0xDF +#define VIDEO_STREAM_S 0xE0 +#define VIDEO_STREAM_E 0xEF +#define ECM_STREAM 0xF0 +#define EMM_STREAM 0xF1 +#define DSM_CC_STREAM 0xF2 +#define ISO13522_STREAM 0xF3 +#define PROG_STREAM_DIR 0xFF + +#define cOPENDVD 0 +#define cOPENTITLE 1 +#define cOPENCHAPTER 2 +#define cOUTCELL 3 +#define cREADFRAME 4 +#define cOUTPACK 5 +#define cOUTFRAMES 6 + +#define aAC3 0x80 +#define aLPCM 0xA0 + +// --- cAC3toPCM ------------------------------------------------------------- + +class cAC3toPCM { +private: + enum { AC3_STOP, AC3_START, AC3_PLAY } ac3stat; + uchar *ac3data; + int ac3inp; + int ac3outp; +public: + cAC3toPCM(void); + ~cAC3toPCM(); + void Clear(void); + void Put(unsigned char *sector, int length); + cFrame *Get(int size, uchar PTSflags = 0, uchar *PTSdata = 0); + }; + +cAC3toPCM::cAC3toPCM(void) +{ + ac3dec_init(); + ac3data = new uchar[AC3_BUFFER_SIZE]; + Clear(); +} + +cAC3toPCM::~cAC3toPCM() +{ + delete ac3data; +} + +void cAC3toPCM::Clear(void) +{ + ac3stat = AC3_START; + ac3outp = ac3inp = 0; +} + +void cAC3toPCM::Put(unsigned char *sector, int length) +{ + ac3dec_decode_data(sector, sector + length, ac3stat == AC3_START, &ac3inp, &ac3outp, (char *)ac3data); + ac3stat = AC3_PLAY; +} + +// data=PCM samples, 16 bit, LSB first, 48kHz, stereo +cFrame *cAC3toPCM::Get(int size, uchar PTSflags, uchar *PTSdata) +{ + if (ac3inp == ac3outp) + return NULL; + +#define MAXSIZE 2022 + + uchar buffer[2048]; + uchar *data; + + if (size > 0) { + int p_size = (size > MAXSIZE) ? MAXSIZE : size; + int length = 10; // default header bytes + int header = 0; + int stuffb = 0; + + switch (PTSflags) { + case 2: header = 5; // additional header bytes + stuffb = 1; + break; + case 3: header = 10; + break; + default: header = 0; + } + + // header = 0; //XXX ??? + stuffb = 0; //XXX ??? + + length += header; + length += stuffb; + + buffer[0] = 0x00; + buffer[1] = 0x00; + buffer[2] = 0x01; + buffer[3] = PRIVATE_STREAM1; + + buffer[6] = 0x80; + buffer[7] = PTSflags << 6; + buffer[8] = header + stuffb; + + if (header) + memcpy(&buffer[9], (void *)PTSdata, header); + + // add stuffing + data = buffer + 9 + header; + for (int cnt = 0; cnt < stuffb; cnt++) + data[cnt] = 0xff; + length += stuffb; + + // add data + data = buffer + 9 + header + stuffb + 7; + int cnt = 0; + while (p_size) { + if (ac3outp != ac3inp) { // data in the buffer + data[cnt ^ 1] = ac3data[ac3outp]; // swab because ac3dec delivers wrong byteorder (the "xor" (^) is a swab!) + p_size--; + cnt++; + length++; + ac3outp = (ac3outp + 1) % AC3_BUFFER_SIZE; + } + else + break; + } + + data = buffer + 9 + header + stuffb; + data[0] = aLPCM; // substream ID + data[1] = 0x00; // other stuff (see DVB specs), ignored by driver + data[2] = 0x00; + data[3] = 0x00; + data[4] = 0x00; + data[5] = 0x00; + data[6] = 0x00; + + buffer[4] = (length >> 8) & 0xff; + buffer[5] = length & 0xff; + + length += 6; + + return new cFrame(buffer, length); + } + return NULL; +} + // --- cDVDplayBuffer -------------------------------------------------------- class cDVDplayBuffer : public cPlayBuffer { private: + cAC3toPCM AC3toPCM; uchar audioTrack; cDVD *dvd;//XXX necessary??? @@ -1308,7 +1493,6 @@ private: int doplay; int cyclestate; int prevcycle; - int brakeCounter; int skipCnt; tt_srpt_t *tt_srpt; @@ -1335,11 +1519,6 @@ private: int logAudioTrack; int maxAudioTrack; - enum { AC3_STOP, AC3_START, AC3_PLAY } ac3stat; - uchar *ac3data; - int ac3inp; - int ac3outp; - int lpcm_count; int is_nav_pack(unsigned char *buffer); void Close(void); virtual void Empty(bool Block = false); @@ -1350,10 +1529,7 @@ private: int GetStuffingLen(const uchar *Data); int GetPacketLength(const uchar *Data); int GetPESHeaderLength(const uchar *Data); - int SendPCM(int size); - void playDecodedAC3(void); - void handleAC3(unsigned char *sector, int length); - void putFrame(unsigned char *sector, int length); + void handleAC3(unsigned char *sector, int length, uchar PTSflags, uchar *PTSdata); unsigned int getAudioStream(unsigned int StreamId); void setChapid(void); void NextState(int State) { prevcycle = cyclestate; cyclestate = State; } @@ -1369,17 +1545,6 @@ public: virtual void ToggleAudioTrack(void); }; -#define cOPENDVD 0 -#define cOPENTITLE 1 -#define cOPENCHAPTER 2 -#define cOUTCELL 3 -#define cREADFRAME 4 -#define cOUTPACK 5 -#define cOUTFRAMES 6 - -#define aAC3 0x80 -#define aLPCM 0xA0 - cDVDplayBuffer::cDVDplayBuffer(cDvbApi *DvbApi, int VideoDev, int AudioDev, cDVD *DvD, int title) :cPlayBuffer(DvbApi, VideoDev, AudioDev) { @@ -1389,15 +1554,10 @@ cDVDplayBuffer::cDVDplayBuffer(cDvbApi *DvbApi, int VideoDev, int AudioDev, cDVD angle = 0; cyclestate = cOPENDVD; prevcycle = 0; - brakeCounter = 0; skipCnt = 0; logAudioTrack = 0; canToggleAudioTrack = true;//XXX determine from cDVD! - ac3dec_init(); data = new uchar[1024 * DVD_VIDEO_LB_LEN]; - ac3data = new uchar[AC3_BUFFER_SIZE]; - ac3inp = ac3outp = 0; - ac3stat = AC3_START; canDoTrickMode = true; dvbApi->SetModeReplay(); Start(); @@ -1408,7 +1568,6 @@ cDVDplayBuffer::~cDVDplayBuffer() Stop(); Close(); dvbApi->SetModeNormal(false); - delete ac3data; delete data; } @@ -1449,8 +1608,7 @@ void cDVDplayBuffer::ToggleAudioTrack(void) #ifdef DVDDEBUG dsyslog(LOG_INFO, "DVB: Audio Stream ID changed to: %x", audioTrack); #endif - ac3stat = AC3_START; - ac3outp = ac3inp; + AC3toPCM.Clear(); } } @@ -1869,141 +2027,21 @@ int cDVDplayBuffer::ScanVideoPacket(const uchar *Data, int Count, uchar *Picture return -1; } -#define SYSTEM_HEADER 0xBB -#define PROG_STREAM_MAP 0xBC -#ifndef PRIVATE_STREAM1 -#define PRIVATE_STREAM1 0xBD -#endif -#define PADDING_STREAM 0xBE -#ifndef PRIVATE_STREAM2 -#define PRIVATE_STREAM2 0xBF -#endif -#define AUDIO_STREAM_S 0xC0 -#define AUDIO_STREAM_E 0xDF -#define VIDEO_STREAM_S 0xE0 -#define VIDEO_STREAM_E 0xEF -#define ECM_STREAM 0xF0 -#define EMM_STREAM 0xF1 -#define DSM_CC_STREAM 0xF2 -#define ISO13522_STREAM 0xF3 -#define PROG_STREAM_DIR 0xFF - -// data=PCM samples, 16 bit, LSB first, 48kHz, stereo -int cDVDplayBuffer::SendPCM(int size) -{ - -#define MAXSIZE 2032 - - uchar buffer[MAXSIZE + 16]; - int length = 0; - int p_size; - - if (ac3inp == ac3outp) - return 1; - - while (size > 0) { - if (size >= MAXSIZE) - p_size = MAXSIZE; - else - p_size = size; - length = 10; - - while (p_size) { - if (ac3outp != ac3inp) { // data in the buffer - buffer[(length + 6) ^ 1] = ac3data[ac3outp]; // swab because ac3dec delivers wrong byteorder - // XXX there is no 'swab' here??? (kls) - p_size--; - length++; - ac3outp = (ac3outp + 1) % AC3_BUFFER_SIZE; - } - else - break; - } - - buffer[0] = 0x00; - buffer[1] = 0x00; - buffer[2] = 0x01; - buffer[3] = PRIVATE_STREAM1; - - buffer[4] = (length >> 8) & 0xff; - buffer[5] = length & 0xff; - - buffer[6] = 0x80; - buffer[7] = 0x00; - buffer[8] = 0x00; - - buffer[9] = aLPCM; // substream ID - buffer[10] = 0x00; // other stuff (see DVD specs), ignored by driver - buffer[11] = 0x00; - buffer[12] = 0x00; - buffer[13] = 0x00; - buffer[14] = 0x00; - buffer[15] = 0x00; - - length += 6; - - putFrame(buffer, length); - size -= MAXSIZE; - } - return 0; -} - -void cDVDplayBuffer::playDecodedAC3(void) -{ - int ac3_datasize = (AC3_BUFFER_SIZE + ac3inp - ac3outp) % AC3_BUFFER_SIZE; - - if (ac3_datasize) { - if (ac3_datasize > 1024 * 48) - SendPCM(3096); - else if (ac3_datasize > 1024 * 32) - SendPCM(1536); - else if (ac3_datasize > 1024 * 16 && !(lpcm_count % 2)) - SendPCM(1536); - else if (ac3_datasize && !(lpcm_count % 4)) - SendPCM(1536); - lpcm_count++; - } - else - lpcm_count=0; -} - -void cDVDplayBuffer::handleAC3(unsigned char *sector, int length) -{ - if (dolbyDev) { - while (length > 0) { - int w = fwrite(sector, 1, length , dolbyDev); - if (w < 0) { - LOG_ERROR; - break; - } - length -= w; - sector += w; - } - } - else { - if (ac3stat == AC3_PLAY) - ac3dec_decode_data(sector, sector + length, 0, &ac3inp, &ac3outp, (char *)ac3data); - else if (ac3stat == AC3_START) { - ac3dec_decode_data(sector, sector + length, 1, &ac3inp, &ac3outp, (char *)ac3data); - ac3stat = AC3_PLAY; - } - } - //playDecodedAC3(); -} - -void cDVDplayBuffer::putFrame(unsigned char *sector, int length) +void cDVDplayBuffer::handleAC3(unsigned char *sector, int length, uchar PTSflags, uchar *PTSdata) { - cFrame *frame = new cFrame(sector, length); - while (Busy() && !blockInput && !Put(frame)) - ; +#define PCM_FRAME_SIZE 1536 + AC3toPCM.Put(sector, length); + cFrame *frame; + if ((frame = AC3toPCM.Get(PCM_FRAME_SIZE, PTSflags, PTSdata)) != NULL) + putFrame(frame); + while ((frame = AC3toPCM.Get(PCM_FRAME_SIZE)) != NULL) + putFrame(frame); } int cDVDplayBuffer::decode_packet(unsigned char *sector, bool trickMode) { + //XXX kls 2001-11-03: do we really need all these different return values? uchar pt = 1; -#if 0 - uchar *osect = sector; -#endif //make sure we got a PS packet header if (!PacketStart(§or, DVD_VIDEO_LB_LEN) && GetPacketType(sector) != 0xBA) { @@ -2017,6 +2055,8 @@ int cDVDplayBuffer::decode_packet(unsigned char *sector, bool trickMode) int datalen = r; sector[6] &= 0x8f; + uchar PTSflags = sector[7] >> 6; + uchar *PTSdata = sector + 9; uchar *data = sector; switch (GetPacketType(sector)) { @@ -2025,6 +2065,7 @@ int cDVDplayBuffer::decode_packet(unsigned char *sector, bool trickMode) ScanVideoPacket(sector, r, &pt); if (trickMode && pt != 1) return pt; + putFrame(sector, r, ftVideo); break; } case AUDIO_STREAM_S ... AUDIO_STREAM_E: { @@ -2033,6 +2074,7 @@ int cDVDplayBuffer::decode_packet(unsigned char *sector, bool trickMode) return 1; if (audioTrack != GetPacketType(sector)) return 5; + putFrame(sector, r, ftAudio); break; } case PRIVATE_STREAM1: @@ -2060,14 +2102,15 @@ int cDVDplayBuffer::decode_packet(unsigned char *sector, bool trickMode) if (audioTrack == *data) { switch (audioTrack & 0xF8) { case aAC3: + if (dolbyDev) + putFrame(sector, r, ftDolby); data += 4; - // correct a3 data lenght - FIXME: why 13 ??? - datalen -= 13; - handleAC3(data, datalen); + datalen -= 13; // 3 (mandatory header) + 6 (PS header) + 4 (AC3 header) = 13 + handleAC3(data, datalen, PTSflags, PTSdata); break; case aLPCM: // write(audio, sector+14 , sector[19]+(sector[18]<<8)+6); - putFrame(sector, GetPacketLength(sector)); + putFrame(sector, GetPacketLength(sector), ftAudio); break; default: break; @@ -2096,9 +2139,6 @@ int cDVDplayBuffer::decode_packet(unsigned char *sector, bool trickMode) return pt; } } - putFrame(sector, r); - if ((audioTrack & 0xF8) == aAC3) - playDecodedAC3(); return pt; } @@ -2106,8 +2146,7 @@ void cDVDplayBuffer::Empty(bool Block) { if (!(blockInput || blockOutput)) { cPlayBuffer::Empty(true); - ac3stat = AC3_START; - ac3outp = ac3inp; + AC3toPCM.Clear(); } if (!Block) cPlayBuffer::Empty(false); @@ -2149,9 +2188,7 @@ void cDVDplayBuffer::SkipSeconds(int Seconds) Empty(true); chapid = newchapid; NextState(cOPENCHAPTER); - if (ac3stat != AC3_STOP) - ac3stat = AC3_START; - ac3outp = ac3inp; + AC3toPCM.Clear(); Empty(false); Play(); } diff --git a/ringbuffer.c b/ringbuffer.c index 7e09b2af..8b8420c1 100644 --- a/ringbuffer.c +++ b/ringbuffer.c @@ -7,7 +7,7 @@ * Parts of this file were inspired by the 'ringbuffy.c' from the * LinuxDVB driver (see linuxtv.org). * - * $Id: ringbuffer.c 1.4 2001/08/05 12:17:45 kls Exp $ + * $Id: ringbuffer.c 1.5 2001/11/03 09:50:46 kls Exp $ */ #include "ringbuffer.h" @@ -215,9 +215,10 @@ int cRingBufferLinear::Get(uchar *Data, int Count) // --- cFrame ---------------------------------------------------------------- -cFrame::cFrame(const uchar *Data, int Count, int Index) +cFrame::cFrame(const uchar *Data, int Count, eFrameType Type, int Index) { count = Count; + type = Type; index = Index; data = new uchar[count]; if (data) diff --git a/ringbuffer.h b/ringbuffer.h index f61d9e04..7e1025b1 100644 --- a/ringbuffer.h +++ b/ringbuffer.h @@ -4,7 +4,7 @@ * See the main source file 'vdr.c' for copyright information and * how to reach the author. * - * $Id: ringbuffer.h 1.4 2001/08/05 11:12:06 kls Exp $ + * $Id: ringbuffer.h 1.5 2001/11/03 10:41:33 kls Exp $ */ #ifndef __RINGBUFFER_H @@ -75,18 +75,22 @@ public: virtual ~cRingBufferLinear(); }; +enum eFrameType { ftUnknown, ftVideo, ftAudio, ftDolby }; + class cFrame { friend class cRingBufferFrame; private: cFrame *next; uchar *data; int count; + eFrameType type; int index; public: - cFrame(const uchar *Data, int Count, int Index = -1); + cFrame(const uchar *Data, int Count, eFrameType = ftUnknown, int Index = -1); ~cFrame(); const uchar *Data(void) const { return data; } int Count(void) const { return count; } + eFrameType Type(void) const { return type; } int Index(void) const { return index; } }; |