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vdr/dvbapi.c

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/*
* dvbapi.c: Interface to the DVB driver
*
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* 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 1.149 2002/02/23 10:40:55 kls Exp $
*/
//#define DVDDEBUG 1
#include "dvbapi.h"
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
extern "C" {
#define HAVE_BOOLEAN
#include <jpeglib.h>
}
#include <stdlib.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <unistd.h>
#ifdef DVDSUPPORT
extern "C" {
#include "ac3dec/ac3.h"
}
#endif //DVDSUPPORT
#include "config.h"
#include "recording.h"
#include "remux.h"
#include "ringbuffer.h"
#include "tools.h"
#include "videodir.h"
#define DEV_VIDEO "/dev/video"
#define DEV_OST_OSD "/dev/ost/osd"
#define DEV_OST_FRONTEND "/dev/ost/frontend"
#define DEV_OST_SEC "/dev/ost/sec"
#define DEV_OST_DVR "/dev/ost/dvr"
#define DEV_OST_DEMUX "/dev/ost/demux"
#define DEV_OST_VIDEO "/dev/ost/video"
#define DEV_OST_AUDIO "/dev/ost/audio"
// The size of the array used to buffer video data:
// (must be larger than MINVIDEODATA - see remux.h)
#define VIDEOBUFSIZE MEGABYTE(1)
// The maximum size of a single frame:
#define MAXFRAMESIZE KILOBYTE(192)
#define MAXFILESPERRECORDING 255
#define MINFREEDISKSPACE (512) // MB
#define DISKCHECKINTERVAL 100 // seconds
#define INDEXFILESUFFIX "/index.vdr"
#define RECORDFILESUFFIX "/%03d.vdr"
#define RECORDFILESUFFIXLEN 20 // some additional bytes for safety...
// The number of frames to back up when resuming an interrupted replay session:
#define RESUMEBACKUP (10 * FRAMESPERSEC)
// The maximum time we wait before assuming that a recorded video data stream
// is broken:
#define MAXBROKENTIMEOUT 30 // seconds
// The maximum time to wait before giving up while catching up on an index file:
#define MAXINDEXCATCHUP 2 // seconds
#define CHECK(s) { if ((s) < 0) LOG_ERROR; } // used for 'ioctl()' calls
#define FATALERRNO (errno != EAGAIN && errno != EINTR)
typedef unsigned char uchar;
const char *IndexToHMSF(int Index, bool WithFrame)
{
static char buffer[16];
int f = (Index % FRAMESPERSEC) + 1;
int s = (Index / FRAMESPERSEC);
int m = s / 60 % 60;
int h = s / 3600;
s %= 60;
snprintf(buffer, sizeof(buffer), WithFrame ? "%d:%02d:%02d.%02d" : "%d:%02d:%02d", h, m, s, f);
return buffer;
}
int HMSFToIndex(const char *HMSF)
{
int h, m, s, f = 0;
if (3 <= sscanf(HMSF, "%d:%d:%d.%d", &h, &m, &s, &f))
return (h * 3600 + m * 60 + s) * FRAMESPERSEC + f - 1;
return 0;
}
// --- cIndexFile ------------------------------------------------------------
class cIndexFile {
private:
struct tIndex { int offset; uchar type; uchar number; short reserved; };
int f;
char *fileName, *pFileExt;
int size, last;
tIndex *index;
cResumeFile resumeFile;
bool CatchUp(int Index = -1);
public:
cIndexFile(const char *FileName, bool Record);
~cIndexFile();
bool Ok(void) { return index != NULL; }
bool Write(uchar PictureType, uchar FileNumber, int FileOffset);
bool Get(int Index, uchar *FileNumber, int *FileOffset, uchar *PictureType = NULL, int *Length = NULL);
int GetNextIFrame(int Index, bool Forward, uchar *FileNumber = NULL, int *FileOffset = NULL, int *Length = NULL, bool StayOffEnd = false);
int Get(uchar FileNumber, int FileOffset);
int Last(void) { CatchUp(); return last; }
int GetResume(void) { return resumeFile.Read(); }
bool StoreResume(int Index) { return resumeFile.Save(Index); }
};
cIndexFile::cIndexFile(const char *FileName, bool Record)
:resumeFile(FileName)
{
f = -1;
fileName = pFileExt = NULL;
size = 0;
last = -1;
index = NULL;
if (FileName) {
fileName = new char[strlen(FileName) + strlen(INDEXFILESUFFIX) + 1];
if (fileName) {
strcpy(fileName, FileName);
pFileExt = fileName + strlen(fileName);
strcpy(pFileExt, INDEXFILESUFFIX);
int delta = 0;
if (access(fileName, R_OK) == 0) {
struct stat buf;
if (stat(fileName, &buf) == 0) {
delta = buf.st_size % sizeof(tIndex);
if (delta) {
delta = sizeof(tIndex) - delta;
esyslog(LOG_ERR, "ERROR: invalid file size (%ld) in '%s'", buf.st_size, fileName);
}
last = (buf.st_size + delta) / sizeof(tIndex) - 1;
if (!Record && last >= 0) {
size = last + 1;
index = new tIndex[size];
if (index) {
f = open(fileName, O_RDONLY);
if (f >= 0) {
if ((int)safe_read(f, index, buf.st_size) != buf.st_size) {
esyslog(LOG_ERR, "ERROR: can't read from file '%s'", fileName);
delete index;
index = NULL;
close(f);
f = -1;
}
// we don't close f here, see CatchUp()!
}
else
LOG_ERROR_STR(fileName);
}
else
esyslog(LOG_ERR, "ERROR: can't allocate %d bytes for index '%s'", size * sizeof(tIndex), fileName);
}
}
else
LOG_ERROR;
}
else if (!Record)
isyslog(LOG_INFO, "missing index file %s", fileName);
if (Record) {
if ((f = open(fileName, O_WRONLY | O_CREAT | O_APPEND, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)) >= 0) {
if (delta) {
esyslog(LOG_ERR, "ERROR: padding index file with %d '0' bytes", delta);
while (delta--)
writechar(f, 0);
}
}
else
LOG_ERROR_STR(fileName);
delete fileName;
fileName = pFileExt = NULL;
}
}
else
esyslog(LOG_ERR, "ERROR: can't copy file name '%s'", FileName);
}
}
cIndexFile::~cIndexFile()
{
if (f >= 0)
close(f);
delete fileName;
delete index;
}
bool cIndexFile::CatchUp(int Index)
{
if (index && f >= 0) {
for (int i = 0; i <= MAXINDEXCATCHUP && (Index < 0 || Index >= last); i++) {
struct stat buf;
if (fstat(f, &buf) == 0) {
int newLast = buf.st_size / sizeof(tIndex) - 1;
if (newLast > last) {
if (size <= newLast) {
size *= 2;
if (size <= newLast)
size = newLast + 1;
}
index = (tIndex *)realloc(index, size * sizeof(tIndex));
if (index) {
int offset = (last + 1) * sizeof(tIndex);
int delta = (newLast - last) * sizeof(tIndex);
if (lseek(f, offset, SEEK_SET) == offset) {
if (safe_read(f, &index[last + 1], delta) != delta) {
esyslog(LOG_ERR, "ERROR: can't read from index");
delete index;
index = NULL;
close(f);
f = -1;
break;
}
last = newLast;
}
else
LOG_ERROR;
}
else
esyslog(LOG_ERR, "ERROR: can't realloc() index");
}
}
else
LOG_ERROR;
if (Index >= last)
sleep(1);
else
return true;
}
}
return false;
}
bool cIndexFile::Write(uchar PictureType, uchar FileNumber, int FileOffset)
{
if (f >= 0) {
tIndex i = { FileOffset, PictureType, FileNumber, 0 };
if (safe_write(f, &i, sizeof(i)) != sizeof(i)) {
esyslog(LOG_ERR, "ERROR: can't write to index file");
close(f);
f = -1;
return false;
}
last++;
}
return f >= 0;
}
bool cIndexFile::Get(int Index, uchar *FileNumber, int *FileOffset, uchar *PictureType, int *Length)
{
if (index) {
CatchUp(Index);
if (Index >= 0 && Index <= last) {
*FileNumber = index[Index].number;
*FileOffset = index[Index].offset;
if (PictureType)
*PictureType = index[Index].type;
if (Length) {
int fn = index[Index + 1].number;
int fo = index[Index + 1].offset;
if (fn == *FileNumber)
*Length = fo - *FileOffset;
else
*Length = -1; // this means "everything up to EOF" (the buffer's Read function will act accordingly)
}
return true;
}
}
return false;
}
int cIndexFile::GetNextIFrame(int Index, bool Forward, uchar *FileNumber, int *FileOffset, int *Length, bool StayOffEnd)
{
if (index) {
if (Forward)
CatchUp();
int d = Forward ? 1 : -1;
for (;;) {
Index += d;
if (Index >= 0 && Index < last - ((Forward && StayOffEnd) ? 100 : 0)) {
if (index[Index].type == I_FRAME) {
if (FileNumber)
*FileNumber = index[Index].number;
else
FileNumber = &index[Index].number;
if (FileOffset)
*FileOffset = index[Index].offset;
else
FileOffset = &index[Index].offset;
if (Length) {
// all recordings end with a non-I_FRAME, so the following should be safe:
int fn = index[Index + 1].number;
int fo = index[Index + 1].offset;
if (fn == *FileNumber)
*Length = fo - *FileOffset;
else {
esyslog(LOG_ERR, "ERROR: 'I' frame at end of file #%d", *FileNumber);
*Length = -1;
}
}
return Index;
}
}
else
break;
}
}
return -1;
}
int cIndexFile::Get(uchar FileNumber, int FileOffset)
{
if (index) {
CatchUp();
//TODO implement binary search!
int i;
for (i = 0; i < last; i++) {
if (index[i].number > FileNumber || (index[i].number == FileNumber) && index[i].offset >= FileOffset)
break;
}
return i;
}
return -1;
}
// --- cFileName -------------------------------------------------------------
class cFileName {
private:
int file;
int fileNumber;
char *fileName, *pFileNumber;
bool record;
bool blocking;
public:
cFileName(const char *FileName, bool Record, bool Blocking = false);
~cFileName();
const char *Name(void) { return fileName; }
int Number(void) { return fileNumber; }
int Open(void);
void Close(void);
int SetOffset(int Number, int Offset = 0);
int NextFile(void);
};
cFileName::cFileName(const char *FileName, bool Record, bool Blocking)
{
file = -1;
fileNumber = 0;
record = Record;
blocking = Blocking;
// Prepare the file name:
fileName = new char[strlen(FileName) + RECORDFILESUFFIXLEN];
if (!fileName) {
esyslog(LOG_ERR, "ERROR: can't copy file name '%s'", fileName);
return;
}
strcpy(fileName, FileName);
pFileNumber = fileName + strlen(fileName);
SetOffset(1);
}
cFileName::~cFileName()
{
Close();
delete fileName;
}
int cFileName::Open(void)
{
if (file < 0) {
int BlockingFlag = blocking ? 0 : O_NONBLOCK;
if (record) {
dsyslog(LOG_INFO, "recording to '%s'", fileName);
file = OpenVideoFile(fileName, O_RDWR | O_CREAT | BlockingFlag);
if (file < 0)
LOG_ERROR_STR(fileName);
}
else {
if (access(fileName, R_OK) == 0) {
dsyslog(LOG_INFO, "playing '%s'", fileName);
file = open(fileName, O_RDONLY | BlockingFlag);
if (file < 0)
LOG_ERROR_STR(fileName);
}
else if (errno != ENOENT)
LOG_ERROR_STR(fileName);
}
}
return file;
}
void cFileName::Close(void)
{
if (file >= 0) {
if ((record && CloseVideoFile(file) < 0) || (!record && close(file) < 0))
LOG_ERROR_STR(fileName);
file = -1;
}
}
int cFileName::SetOffset(int Number, int Offset)
{
if (fileNumber != Number)
Close();
if (0 < Number && Number <= MAXFILESPERRECORDING) {
fileNumber = Number;
sprintf(pFileNumber, RECORDFILESUFFIX, fileNumber);
if (record) {
if (access(fileName, F_OK) == 0) // file exists, let's try next suffix
return SetOffset(Number + 1);
else if (errno != ENOENT) { // something serious has happened
LOG_ERROR_STR(fileName);
return -1;
}
// found a non existing file suffix
}
if (Open() >= 0) {
if (!record && Offset >= 0 && lseek(file, Offset, SEEK_SET) != Offset) {
LOG_ERROR_STR(fileName);
return -1;
}
}
return file;
}
esyslog(LOG_ERR, "ERROR: max number of files (%d) exceeded", MAXFILESPERRECORDING);
return -1;
}
int cFileName::NextFile(void)
{
return SetOffset(fileNumber + 1);
}
// --- cRecordBuffer ---------------------------------------------------------
class cRecordBuffer : public cRingBufferLinear {
private:
cDvbApi *dvbApi;
cFileName fileName;
cIndexFile *index;
cRemux remux;
uchar pictureType;
int fileSize;
int videoDev;
int recordFile;
bool recording;
time_t lastDiskSpaceCheck;
bool RunningLowOnDiskSpace(void);
bool NextFile(void);
protected:
virtual void Input(void);
virtual void Output(void);
public:
cRecordBuffer(cDvbApi *DvbApi, const char *FileName, int VPid, int APid1, int APid2, int DPid1, int DPid2);
virtual ~cRecordBuffer();
};
cRecordBuffer::cRecordBuffer(cDvbApi *DvbApi, const char *FileName, int VPid, int APid1, int APid2, int DPid1, int DPid2)
:cRingBufferLinear(VIDEOBUFSIZE, true)
,fileName(FileName, true)
,remux(VPid, APid1, APid2, DPid1, DPid2, true)
{
dvbApi = DvbApi;
index = NULL;
pictureType = NO_PICTURE;
fileSize = 0;
recordFile = fileName.Open();
recording = false;
lastDiskSpaceCheck = time(NULL);
if (!fileName.Name())
return;
// Create the index file:
index = new cIndexFile(FileName, true);
if (!index)
esyslog(LOG_ERR, "ERROR: can't allocate index");
// let's continue without index, so we'll at least have the recording
videoDev = dvbApi->SetModeRecord();
Start();
}
cRecordBuffer::~cRecordBuffer()
{
Stop();
dvbApi->SetModeNormal(true);
delete index;
}
bool cRecordBuffer::RunningLowOnDiskSpace(void)
{
if (time(NULL) > lastDiskSpaceCheck + DISKCHECKINTERVAL) {
int Free = FreeDiskSpaceMB(fileName.Name());
lastDiskSpaceCheck = time(NULL);
if (Free < MINFREEDISKSPACE) {
dsyslog(LOG_INFO, "low disk space (%d MB, limit is %d MB)", Free, MINFREEDISKSPACE);
return true;
}
}
return false;
}
bool cRecordBuffer::NextFile(void)
{
if (recordFile >= 0 && pictureType == I_FRAME) { // every file shall start with an I_FRAME
if (fileSize > MEGABYTE(Setup.MaxVideoFileSize) || RunningLowOnDiskSpace()) {
recordFile = fileName.NextFile();
fileSize = 0;
}
}
return recordFile >= 0;
}
void cRecordBuffer::Input(void)
{
dsyslog(LOG_INFO, "input thread started (pid=%d)", getpid());
uchar b[MINVIDEODATA];
time_t t = time(NULL);
recording = true;
for (;;) {
int r = read(videoDev, b, sizeof(b));
if (r > 0) {
uchar *p = b;
while (r > 0) {
int w = Put(p, r);
p += w;
r -= w;
}
t = time(NULL);
}
else if (r < 0) {
if (FATALERRNO) {
if (errno == EBUFFEROVERFLOW) // this error code is not defined in the library
esyslog(LOG_ERR, "ERROR (%s,%d): DVB driver buffer overflow", __FILE__, __LINE__);
else {
LOG_ERROR;
break;
}
}
}
if (time(NULL) - t > MAXBROKENTIMEOUT) {
esyslog(LOG_ERR, "ERROR: video data stream broken");
cThread::EmergencyExit(true);
t = time(NULL);
}
cFile::FileReady(videoDev, 100);
if (!recording)
break;
}
dsyslog(LOG_INFO, "input thread ended (pid=%d)", getpid());
}
void cRecordBuffer::Output(void)
{
dsyslog(LOG_INFO, "output thread started (pid=%d)", getpid());
uchar b[MINVIDEODATA];
int r = 0;
for (;;) {
int g = Get(b + r, sizeof(b) - r);
if (g > 0)
r += g;
if (r > 0) {
int Count = r, Result;
const uchar *p = remux.Process(b, Count, Result, &pictureType);
if (p) {
if (!Busy() && pictureType == I_FRAME) // finish the recording before the next 'I' frame
break;
if (NextFile()) {
if (index && pictureType != NO_PICTURE)
index->Write(pictureType, fileName.Number(), fileSize);
while (Result > 0) {
int w = safe_write(recordFile, p, Result);
if (w < 0) {
LOG_ERROR_STR(fileName.Name());
recording = false;
return;
}
p += w;
Result -= w;
fileSize += w;
}
}
else
break;
}
if (Count > 0) {
r -= Count;
memmove(b, b + Count, r);
}
if (!recording)
break;
}
else
usleep(1); // this keeps the CPU load low
}
recording = false;
dsyslog(LOG_INFO, "output thread ended (pid=%d)", getpid());
}
// --- ReadFrame -------------------------------------------------------------
int ReadFrame(int f, uchar *b, int Length, int Max)
{
if (Length == -1)
Length = Max; // this means we read up to EOF (see cIndex)
else if (Length > Max) {
esyslog(LOG_ERR, "ERROR: frame larger than buffer (%d > %d)", Length, Max);
Length = Max;
}
int r = safe_read(f, b, Length);
if (r < 0)
LOG_ERROR;
return r;
}
// --- cBackTrace ----------------------------------------------------------
#define AVG_FRAME_SIZE 15000 // an assumption about the average frame size
#define DVB_BUF_SIZE (256 * 1024) // an assumption about the dvb firmware buffer size
#define BACKTRACE_ENTRIES (DVB_BUF_SIZE / AVG_FRAME_SIZE + 20) // how many entries are needed to backtrace buffer contents
class cBackTrace {
private:
int index[BACKTRACE_ENTRIES];
int length[BACKTRACE_ENTRIES];
int pos, num;
public:
cBackTrace(void);
void Clear(void);
void Add(int Index, int Length);
int Get(bool Forward);
};
cBackTrace::cBackTrace(void)
{
Clear();
}
void cBackTrace::Clear(void)
{
pos = num = 0;
}
void cBackTrace::Add(int Index, int Length)
{
index[pos] = Index;
length[pos] = Length;
if (++pos >= BACKTRACE_ENTRIES)
pos = 0;
if (num < BACKTRACE_ENTRIES)
num++;
}
int cBackTrace::Get(bool Forward)
{
int p = pos;
int n = num;
int l = DVB_BUF_SIZE + (Forward ? 0 : 256 * 1024); //XXX (256 * 1024) == DVB_BUF_SIZE ???
int i = -1;
while (n && l > 0) {
if (--p < 0)
p = BACKTRACE_ENTRIES - 1;
i = index[p] - 1;
l -= length[p];
n--;
}
return i;
}
// --- cPlayBuffer ---------------------------------------------------------
#define MAX_VIDEO_SLOWMOTION 63 // max. arg to pass to VIDEO_SLOWMOTION // TODO is this value correct?
class cPlayBuffer : public cRingBufferFrame {
private:
cBackTrace backTrace;
protected:
enum ePlayModes { pmPlay, pmPause, pmSlow, pmFast, pmStill };
enum ePlayDirs { pdForward, pdBackward };
static int Speeds[];
cDvbApi *dvbApi;
int videoDev, audioDev;
cPipe dolbyDev;
int blockInput, blockOutput;
ePlayModes playMode;
ePlayDirs playDir;
int trickSpeed;
int readIndex, writeIndex;
bool canDoTrickMode;
bool canToggleAudioTrack;
bool skipAC3bytes;
uchar audioTrack;
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();
virtual void Pause(void);
virtual void Play(void);
virtual void Forward(void);
virtual void Backward(void);
virtual int SkipFrames(int Frames) { return -1; }
virtual void SkipSeconds(int Seconds) {}
virtual void Goto(int Position, bool Still = false) {}
virtual void GetIndex(int &Current, int &Total, bool SnapToIFrame = false) { Current = Total = -1; }
bool GetReplayMode(bool &Play, bool &Forward, int &Speed);
bool CanToggleAudioTrack(void) { return canToggleAudioTrack; };
virtual void ToggleAudioTrack(void);
};
#define NORMAL_SPEED 4 // the index of the '1' entry in the following array
#define MAX_SPEEDS 3 // the offset of the maximum speed from normal speed in either direction
#define SPEED_MULT 12 // the speed multiplier
int cPlayBuffer::Speeds[] = { 0, -2, -4, -8, 1, 2, 4, 12, 0 };
cPlayBuffer::cPlayBuffer(cDvbApi *DvbApi, int VideoDev, int AudioDev)
:cRingBufferFrame(VIDEOBUFSIZE)
{
dvbApi = DvbApi;
videoDev = VideoDev;
audioDev = AudioDev;
blockInput = blockOutput = false;
playMode = pmPlay;
playDir = pdForward;
trickSpeed = NORMAL_SPEED;
readIndex = writeIndex = -1;
canDoTrickMode = false;
canToggleAudioTrack = false;
skipAC3bytes = false;
audioTrack = 0xC0;
if (cDvbApi::AudioCommand()) {
if (!dolbyDev.Open(cDvbApi::AudioCommand(), "w"))
esyslog(LOG_ERR, "ERROR: can't open pipe to audio command '%s'", cDvbApi::AudioCommand());
}
}
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] + (skipAC3bytes ? 13 : 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());
while (Busy()) {
if (blockOutput) {
if (blockOutput > 1)
blockOutput = 1;
continue;
}
const cFrame *frame = Get();
if (frame) {
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());
}
Drop(frame);
}
}
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;
if (Speeds[nts] == 1) {
trickSpeed = nts;
if (playMode == pmFast)
Play();
else
Pause();
}
else if (Speeds[nts]) {
trickSpeed = nts;
int Mult = (playMode == pmSlow && playDir == pdForward) ? 1 : SPEED_MULT;
int sp = (Speeds[nts] > 0) ? Mult / Speeds[nts] : -Speeds[nts] * Mult;
if (sp > MAX_VIDEO_SLOWMOTION)
sp = MAX_VIDEO_SLOWMOTION;
CHECK(ioctl(videoDev, VIDEO_SLOWMOTION, sp));
}
}
void cPlayBuffer::Empty(bool Block)
{
if (!(blockInput || blockOutput)) {
blockInput = blockOutput = 2;
EnablePut();
EnableGet();
time_t t0 = time(NULL);
while ((blockInput > 1 || blockOutput > 1) && time(NULL) - t0 < 2)
usleep(1);
Lock();
if ((readIndex = backTrace.Get(playDir == pdForward)) < 0)
readIndex = writeIndex;
cRingBufferFrame::Clear();
CHECK(ioctl(videoDev, VIDEO_CLEAR_BUFFER));
CHECK(ioctl(audioDev, AUDIO_CLEAR_BUFFER));
}
if (!Block) {
blockInput = blockOutput = 0;
backTrace.Clear();
Unlock();
}
}
void cPlayBuffer::Pause(void)
{
if (playMode == pmPause || playMode == pmStill)
Play();
else {
bool empty = (playMode == pmFast || (playMode == pmSlow && playDir == pdBackward));
if (empty)
Empty(true);
CHECK(ioctl(audioDev, AUDIO_SET_AV_SYNC, false));
CHECK(ioctl(videoDev, VIDEO_FREEZE));
playMode = pmPause;
if (empty)
Empty(false);
}
}
void cPlayBuffer::Play(void)
{
if (playMode != pmPlay) {
bool empty = (playMode == pmStill || playMode == pmFast || (playMode == pmSlow && playDir == pdBackward));
if (empty)
Empty(true);
CHECK(ioctl(audioDev, AUDIO_SET_AV_SYNC, true));
CHECK(ioctl(videoDev, VIDEO_CONTINUE));
playMode = pmPlay;
playDir = pdForward;
if (empty)
Empty(false);
}
}
void cPlayBuffer::Forward(void)
{
if (canDoTrickMode) {
switch (playMode) {
case pmFast:
if (Setup.MultiSpeedMode) {
TrickSpeed(playDir == pdForward ? 1 : -1);
break;
}
else if (playDir == pdForward) {
Play();
break;
}
// run into pmPlay
case pmPlay:
Empty(true);
CHECK(ioctl(audioDev, AUDIO_SET_AV_SYNC, false));
playMode = pmFast;
playDir = pdForward;
trickSpeed = NORMAL_SPEED;
TrickSpeed(Setup.MultiSpeedMode ? 1 : MAX_SPEEDS);
Empty(false);
break;
case pmSlow:
if (Setup.MultiSpeedMode) {
TrickSpeed(playDir == pdForward ? -1 : 1);
break;
}
else if (playDir == pdForward) {
Pause();
break;
}
// run into pmPause
case pmStill:
case pmPause:
CHECK(ioctl(audioDev, AUDIO_SET_AV_SYNC, false));
playMode = pmSlow;
playDir = pdForward;
trickSpeed = NORMAL_SPEED;
TrickSpeed(Setup.MultiSpeedMode ? -1 : -MAX_SPEEDS);
break;
}
}
}
void cPlayBuffer::Backward(void)
{
if (canDoTrickMode) {
switch (playMode) {
case pmFast:
if (Setup.MultiSpeedMode) {
TrickSpeed(playDir == pdBackward ? 1 : -1);
break;
}
else if (playDir == pdBackward) {
Play();
break;
}
// run into pmPlay
case pmPlay:
Empty(true);
CHECK(ioctl(audioDev, AUDIO_SET_AV_SYNC, false));
playMode = pmFast;
playDir = pdBackward;
trickSpeed = NORMAL_SPEED;
TrickSpeed(Setup.MultiSpeedMode ? 1 : MAX_SPEEDS);
Empty(false);
break;
case pmSlow:
if (Setup.MultiSpeedMode) {
TrickSpeed(playDir == pdBackward ? -1 : 1);
break;
}
else if (playDir == pdBackward) {
Pause();
break;
}
// run into pmPause
case pmStill:
case pmPause:
Empty(true);
CHECK(ioctl(audioDev, AUDIO_SET_AV_SYNC, false));
playMode = pmSlow;
playDir = pdBackward;
trickSpeed = NORMAL_SPEED;
TrickSpeed(Setup.MultiSpeedMode ? -1 : -MAX_SPEEDS);
Empty(false);
break;
}
}
}
bool cPlayBuffer::GetReplayMode(bool &Play, bool &Forward, int &Speed)
{
Play = (playMode == pmPlay || playMode == pmFast);
Forward = (playDir == pdForward);
if (playMode == pmFast || playMode == pmSlow)
Speed = Setup.MultiSpeedMode ? abs(trickSpeed - NORMAL_SPEED) : 0;
else
Speed = -1;
return true;
}
void cPlayBuffer::ToggleAudioTrack(void)
{
if (CanToggleAudioTrack()) {
audioTrack = (audioTrack == 0xC0) ? 0xC1 : 0xC0;
Empty();
}
}
// --- cReplayBuffer ---------------------------------------------------------
class cReplayBuffer : public cPlayBuffer {
private:
cIndexFile *index;
cFileName fileName;
int replayFile;
bool eof;
bool NextFile(uchar FileNumber = 0, int FileOffset = -1);
void Close(void);
virtual void StripAudioPackets(uchar *b, int Length, uchar Except = 0x00);
void DisplayFrame(uchar *b, int Length);
int Resume(void);
bool Save(void);
protected:
virtual void Input(void);
public:
cReplayBuffer(cDvbApi *DvbApi, int VideoDev, int AudioDev, const char *FileName);
virtual ~cReplayBuffer();
virtual int SkipFrames(int Frames);
virtual void SkipSeconds(int Seconds);
virtual void Goto(int Position, bool Still = false);
virtual void GetIndex(int &Current, int &Total, bool SnapToIFrame = false);
};
cReplayBuffer::cReplayBuffer(cDvbApi *DvbApi, int VideoDev, int AudioDev, const char *FileName)
:cPlayBuffer(DvbApi, VideoDev, AudioDev)
,fileName(FileName, false)
{
index = NULL;
replayFile = fileName.Open();
eof = false;
if (!fileName.Name())
return;
// Create the index file:
index = new cIndexFile(FileName, false);
if (!index)
esyslog(LOG_ERR, "ERROR: can't allocate index");
else if (!index->Ok()) {
delete index;
index = NULL;
}
canDoTrickMode = index != NULL;
dvbApi->SetModeReplay();
Start();
}
cReplayBuffer::~cReplayBuffer()
{
Stop();
Save();
Close();
dvbApi->SetModeNormal(false);
delete index;
}
void cReplayBuffer::Input(void)
{
dsyslog(LOG_INFO, "input thread started (pid=%d)", getpid());
readIndex = Resume();
if (readIndex >= 0)
isyslog(LOG_INFO, "resuming replay at index %d (%s)", readIndex, IndexToHMSF(readIndex, true));
uchar b[MAXFRAMESIZE];
while (Busy() && (blockInput || NextFile())) {
if (blockInput) {
if (blockInput > 1)
blockInput = 1;
continue;
}
if (playMode != pmStill) {
int r = 0;
if (playMode == pmFast || (playMode == pmSlow && playDir == pdBackward)) {
uchar FileNumber;
int FileOffset, Length;
int Index = index->GetNextIFrame(readIndex, playDir == pdForward, &FileNumber, &FileOffset, &Length, true);
if (Index >= 0) {
if (!NextFile(FileNumber, FileOffset))
break;
}
else {
// can't call Play() here, because those functions may only be
// called from the foreground thread - and we also don't need
// to empty the buffer here
CHECK(ioctl(audioDev, AUDIO_SET_AV_SYNC, true));
CHECK(ioctl(videoDev, VIDEO_CONTINUE));
playMode = pmPlay;
playDir = pdForward;
continue;
}
readIndex = Index;
r = ReadFrame(replayFile, b, Length, sizeof(b));
// must call StripAudioPackets() here because the buffer is not emptied
// when falling back from "fast forward" to "play" (see above)
StripAudioPackets(b, r);
}
else if (index) {
uchar FileNumber;
int FileOffset, Length;
readIndex++;
if (!(index->Get(readIndex, &FileNumber, &FileOffset, NULL, &Length) && NextFile(FileNumber, FileOffset)))
break;
r = ReadFrame(replayFile, b, Length, sizeof(b));
}
else // allows replay even if the index file is missing
r = read(replayFile, b, sizeof(b));
if (r > 0)
putFrame(new cFrame(b, r, ftUnknown, readIndex));
else if (r == 0)
eof = true;
else if (r < 0 && FATALERRNO) {
LOG_ERROR;
break;
}
}
else//XXX
usleep(1); // this keeps the CPU load low
}
dsyslog(LOG_INFO, "input thread ended (pid=%d)", getpid());
}
void cReplayBuffer::StripAudioPackets(uchar *b, int Length, uchar Except)
{
if (canDoTrickMode) {
for (int i = 0; i < Length - 6; i++) {
if (b[i] == 0x00 && b[i + 1] == 0x00 && b[i + 2] == 0x01) {
uchar c = b[i + 3];
int l = b[i + 4] * 256 + b[i + 5] + 6;
switch (c) {
case 0xBD: // dolby
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)
canToggleAudioTrack = true;
if (!Except || c != Except) {
int n = l;
for (int j = i; j < Length && n--; j++)
b[j] = 0x00;
}
break;
case 0xE0 ... 0xEF: // video
break;
default:
//esyslog(LOG_ERR, "ERROR: unexpected packet id %02X", c);
l = 0;
}
if (l)
i += l - 1; // the loop increments, too!
}
/*XXX
else
esyslog(LOG_ERR, "ERROR: broken packet header");
XXX*/
}
}
}
void cReplayBuffer::DisplayFrame(uchar *b, int Length)
{
StripAudioPackets(b, Length);
videoDisplayStillPicture sp = { (char *)b, Length };
CHECK(ioctl(audioDev, AUDIO_SET_AV_SYNC, false));
CHECK(ioctl(audioDev, AUDIO_SET_MUTE, true));
CHECK(ioctl(videoDev, VIDEO_STILLPICTURE, &sp));
}
void cReplayBuffer::Close(void)
{
if (replayFile >= 0) {
fileName.Close();
replayFile = -1;
}
}
int cReplayBuffer::Resume(void)
{
if (index) {
int Index = index->GetResume();
if (Index >= 0) {
uchar FileNumber;
int FileOffset;
if (index->Get(Index, &FileNumber, &FileOffset) && NextFile(FileNumber, FileOffset))
return Index;
}
}
return -1;
}
bool cReplayBuffer::Save(void)
{
if (index) {
int Index = writeIndex;
if (Index >= 0) {
Index -= RESUMEBACKUP;
if (Index > 0)
Index = index->GetNextIFrame(Index, false);
else
Index = 0;
if (Index >= 0)
return index->StoreResume(Index);
}
}
return false;
}
int cReplayBuffer::SkipFrames(int Frames)
{
if (index && Frames) {
int Current, Total;
GetIndex(Current, Total, true);
int OldCurrent = Current;
Current = index->GetNextIFrame(Current + Frames, Frames > 0);
return Current >= 0 ? Current : OldCurrent;
}
return -1;
}
void cReplayBuffer::SkipSeconds(int Seconds)
{
if (index && Seconds) {
Empty(true);
int Index = writeIndex;
if (Index >= 0) {
Index = max(Index + Seconds * FRAMESPERSEC, 0);
if (Index > 0)
Index = index->GetNextIFrame(Index, false, NULL, NULL, NULL, true);
if (Index >= 0)
readIndex = writeIndex = Index - 1; // Input() will first increment it!
}
Empty(false);
Play();
}
}
void cReplayBuffer::Goto(int Index, bool Still)
{
if (index) {
Empty(true);
if (++Index <= 0)
Index = 1; // not '0', to allow GetNextIFrame() below to work!
uchar FileNumber;
int FileOffset, Length;
Index = index->GetNextIFrame(Index, false, &FileNumber, &FileOffset, &Length);
if (Index >= 0 && NextFile(FileNumber, FileOffset) && Still) {
uchar b[MAXFRAMESIZE];
int r = ReadFrame(replayFile, b, Length, sizeof(b));
if (r > 0) {
if (playMode == pmPause)
CHECK(ioctl(videoDev, VIDEO_CONTINUE));
DisplayFrame(b, r);
}
playMode = pmStill;
}
readIndex = writeIndex = Index;
Empty(false);
}
}
void cReplayBuffer::GetIndex(int &Current, int &Total, bool SnapToIFrame)
{
if (index) {
if (playMode == pmStill)
Current = max(readIndex, 0);
else {
Current = max(writeIndex, 0);
if (SnapToIFrame) {
int i1 = index->GetNextIFrame(Current + 1, false);
int i2 = index->GetNextIFrame(Current, true);
Current = (abs(Current - i1) <= abs(Current - i2)) ? i1 : i2;
}
}
Total = index->Last();
}
else
Current = Total = -1;
}
bool cReplayBuffer::NextFile(uchar FileNumber, int FileOffset)
{
if (FileNumber > 0)
replayFile = fileName.SetOffset(FileNumber, FileOffset);
else if (replayFile >= 0 && eof) {
Close();
replayFile = fileName.NextFile();
}
eof = false;
return replayFile >= 0;
}
#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
// --- 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;
switch (PTSflags) {
case 2: header = 5; // additional header bytes
break;
case 3: header = 10;
break;
default: header = 0;
}
length += header;
buffer[0] = 0x00;
buffer[1] = 0x00;
buffer[2] = 0x01;
buffer[3] = PRIVATE_STREAM1;
buffer[6] = 0x80;
buffer[7] = PTSflags << 6;
buffer[8] = header;
if (header)
memcpy(&buffer[9], (void *)PTSdata, header);
// add data
data = buffer + 9 + header + 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;
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???
int titleid;
int chapid;
int angle;
dvd_file_t *title;
ifo_handle_t *vmg_file;
ifo_handle_t *vts_file;
int doplay;
int cyclestate;
int prevcycle;
int skipCnt;
tt_srpt_t *tt_srpt;
vts_ptt_srpt_t *vts_ptt_srpt;
pgc_t *cur_pgc;
dsi_t dsi_pack;
unsigned int next_vobu;
unsigned int prev_vobu;
unsigned int next_ilvu_start;
unsigned int cur_output_size;
unsigned int min_output_size;
unsigned int pktcnt;
int pgc_id;
int start_cell;
int next_cell;
int prev_cell;
int cur_cell;
unsigned int cur_pack;
int ttn;
int pgn;
uchar *data;
int logAudioTrack;
int maxAudioTrack;
int is_nav_pack(unsigned char *buffer);
void Close(void);
virtual void Empty(bool Block = false);
int decode_packet(unsigned char *sector, bool trickmode);
int ScanVideoPacket(const uchar *Data, int Count, uchar *PictureType);
bool PacketStart(uchar **Data, int len);
int GetPacketType(const uchar *Data);
int GetStuffingLen(const uchar *Data);
int GetPacketLength(const uchar *Data);
int GetPESHeaderLength(const uchar *Data);
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; }
protected:
virtual void Input(void);
public:
cDVDplayBuffer(cDvbApi *DvbApi, int VideoDev, int AudioDev, cDVD *DvD, int title);
virtual ~cDVDplayBuffer();
virtual int SkipFrames(int Frames);
virtual void SkipSeconds(int Seconds);
virtual void Goto(int Position, bool Still = false);
virtual void GetIndex(int &Current, int &Total, bool SnapToIFrame = false);
virtual void ToggleAudioTrack(void);
};
cDVDplayBuffer::cDVDplayBuffer(cDvbApi *DvbApi, int VideoDev, int AudioDev, cDVD *DvD, int title)
:cPlayBuffer(DvbApi, VideoDev, AudioDev)
{
dvd = DvD;
titleid = title;
chapid = 0;
angle = 0;
cyclestate = cOPENDVD;
prevcycle = 0;
skipCnt = 0;
logAudioTrack = 0;
canToggleAudioTrack = true;//XXX determine from cDVD!
data = new uchar[1024 * DVD_VIDEO_LB_LEN];
canDoTrickMode = true;
skipAC3bytes = true;
dvbApi->SetModeReplay();
Start();
}
cDVDplayBuffer::~cDVDplayBuffer()
{
Stop();
Close();
dvbApi->SetModeNormal(false);
delete data;
}
unsigned int cDVDplayBuffer::getAudioStream(unsigned int StreamId)
{
if (cyclestate < cOPENCHAPTER || StreamId > 7)
return 0;
if (!(cur_pgc->audio_control[StreamId] & 0x8000))
return 0;
int track = (cur_pgc->audio_control[StreamId] >> 8) & 0x07;
return dvd->getAudioTrack(track) | track;
}
void cDVDplayBuffer::ToggleAudioTrack(void)
{
unsigned int newTrack;
if (CanToggleAudioTrack() && maxAudioTrack != 0) {
logAudioTrack = (logAudioTrack + 1) % maxAudioTrack;
if ((newTrack = getAudioStream(logAudioTrack)) != 0)
audioTrack = newTrack;
#ifdef DVDDEBUG
dsyslog(LOG_INFO, "DVB: Audio Stream ID changed to: %x", audioTrack);
#endif
AC3toPCM.Clear();
}
}
/**
* Returns true if the pack is a NAV pack. This check is clearly insufficient,
* and sometimes we incorrectly think that valid other packs are NAV packs. I
* need to make this stronger.
*/
inline int cDVDplayBuffer::is_nav_pack(unsigned char *buffer)
{
return buffer[41] == 0xbf && buffer[1027] == 0xbf;
}
void cDVDplayBuffer::Input(void)
{
dsyslog(LOG_INFO, "input thread started (pid=%d)", getpid());
doplay = true;
while (Busy() && doplay) {
if (blockInput) {
if (blockInput > 1)
blockInput = 1;
continue;
}
//BEGIN: ripped from play_title
/**
* Playback by cell in this pgc, starting at the cell for our chapter.
*/
//dsyslog(LOG_INFO, "DVD: cyclestate: %d", cyclestate);
switch (cyclestate) {
case cOPENDVD: // open the DVD and get all the basic information
{
if (!dvd->isValid()) {
doplay = false;
break;
}
/**
* Load the video manager to find out the information about the titles on
* this disc.
*/
vmg_file = dvd->openVMG();
if (!vmg_file) {
esyslog(LOG_ERR, "ERROR: can't open VMG info");
doplay = false;
break;
}
tt_srpt = vmg_file->tt_srpt;
NextState(cOPENTITLE);
break;
}
case cOPENTITLE: // open the selected title
{
/**
* Make sure our title number is valid.
*/
isyslog(LOG_INFO, "DVD: there are %d titles on this DVD", tt_srpt->nr_of_srpts);
if (titleid < 0 || titleid >= tt_srpt->nr_of_srpts) {
esyslog(LOG_ERR, "ERROR: invalid title %d", titleid + 1);
doplay = false;
break;
}
/**
* Load the VTS information for the title set our title is in.
*/
vts_file = dvd->openVTS(tt_srpt->title[titleid].title_set_nr);
if (!vts_file) {
esyslog(LOG_ERR, "ERROR: can't open the title %d info file", tt_srpt->title[titleid].title_set_nr);
doplay = false;
break;
}
NextState(cOPENCHAPTER);
break;
}
case cOPENCHAPTER:
{
/**
* Make sure the chapter number is valid for this title.
*/
isyslog(LOG_INFO, "DVD: there are %d chapters in this title", tt_srpt->title[titleid].nr_of_ptts);
if (chapid < 0 || chapid >= tt_srpt->title[titleid].nr_of_ptts) {
esyslog(LOG_ERR, "ERROR: invalid chapter %d", chapid + 1);
doplay = false;
break;
}
/**
* Determine which program chain we want to watch. This is based on the
* chapter number.
*/
ttn = tt_srpt->title[titleid].vts_ttn;
vts_ptt_srpt = vts_file->vts_ptt_srpt;
pgc_id = vts_ptt_srpt->title[ttn - 1].ptt[chapid].pgcn;
pgn = vts_ptt_srpt->title[ttn - 1].ptt[chapid].pgn;
cur_pgc = vts_file->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
start_cell = cur_pgc->program_map[pgn - 1] - 1;
/**
* setup Audio information
**/
for (maxAudioTrack = 0; maxAudioTrack < 8; maxAudioTrack++) {
if (!(cur_pgc->audio_control[maxAudioTrack] & 0x8000))
break;
}
canToggleAudioTrack = (maxAudioTrack > 0);
// init the AudioInformation
audioTrack = getAudioStream(logAudioTrack);
#ifdef DVDDEBUG
dsyslog(LOG_INFO, "DVD: max: %d, track: %x", maxAudioTrack, audioTrack);
#endif
/**
* We've got enough info, time to open the title set data.
*/
title = dvd->openTitle(tt_srpt->title[titleid].title_set_nr, DVD_READ_TITLE_VOBS);
if (!title) {
esyslog(LOG_ERR, "ERROR: can't open title VOBS (VTS_%02d_1.VOB).", tt_srpt->title[titleid].title_set_nr);
doplay = false;
break;
}
/**
* Playback by cell in this pgc, starting at the cell for our chapter.
*/
next_cell = start_cell;
prev_cell = start_cell;
cur_cell = start_cell;
NextState(cOUTCELL);
break;
}
case cOUTCELL:
{
#ifdef DVDDEBUG
dsyslog(LOG_INFO, "DVD: new cell: %d", cur_cell);
dsyslog(LOG_INFO, "DVD: vob_id: %x, cell_nr: %x", cur_pgc->cell_position[cur_cell].vob_id_nr, cur_pgc->cell_position[cur_cell].cell_nr);
#endif
if (cur_cell < 0) {
cur_cell = 0;
Backward();
}
doplay = (cur_cell < cur_pgc->nr_of_cells);
if (!doplay)
break;
/* Check if we're entering an angle block. */
if (cur_pgc->cell_playback[cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK) {
cur_cell += angle;
for (int i = 0; ; ++i) {
if (cur_pgc->cell_playback[cur_cell + i].block_mode == BLOCK_MODE_LAST_CELL) {
next_cell = cur_cell + i + 1;
break;
}
}
}
else {
next_cell = cur_cell + 1;
prev_cell = cur_cell - 1;
}
// init settings for next state
if (playDir == pdForward)
cur_pack = cur_pgc->cell_playback[cur_cell].first_sector;
else
cur_pack = cur_pgc->cell_playback[cur_cell].last_vobu_start_sector;
NextState(cOUTPACK);
break;
}
case cOUTPACK:
{
#ifdef DVDDEBUG
dsyslog(LOG_INFO, "DVD: new pack: %d", cur_pack);
#endif
/**
* We loop until we're out of this cell.
*/
if (playDir == pdForward) {
if (cur_pack >= cur_pgc->cell_playback[cur_cell].last_sector) {
cur_cell = next_cell;
#ifdef DVDDEBUG
dsyslog(LOG_INFO, "DVD: end of pack");
#endif
NextState(cOUTCELL);
break;
}
}
else {
#ifdef DVDDEBUG
dsyslog(LOG_INFO, "DVD: prev: %d, curr: %x, next: %x, prev: %x", prevcycle, cur_pack, next_vobu, prev_vobu);
#endif
if ((cur_pack & 0x80000000) != 0) {
cur_cell = prev_cell;
#ifdef DVDDEBUG
dsyslog(LOG_INFO, "DVD: start of pack");
#endif
NextState(cOUTCELL);
break;
}
}
/**
* Read NAV packet.
*/
int len = DVDReadBlocks(title, cur_pack, 1, data);
if (len == 0) {
esyslog(LOG_ERR, "ERROR: read failed for block %d", cur_pack);
doplay = false;
break;
}
if (!is_nav_pack(data)) {
esyslog(LOG_ERR, "ERROR: no nav_pack");
return;
}
/**
* Parse the contained dsi packet.
*/
navRead_DSI(&dsi_pack, &(data[DSI_START_BYTE]));
if (cur_pack != dsi_pack.dsi_gi.nv_pck_lbn) {
esyslog(LOG_ERR, "ERROR: cur_pack != dsi_pack.dsi_gi.nv_pck_lbn");
return;
}
// navPrint_DSI(&dsi_pack);
/**
* Determine where we go next. These values are the ones we mostly
* care about.
*/
next_ilvu_start = cur_pack + dsi_pack.sml_agli.data[angle].address;
cur_output_size = dsi_pack.dsi_gi.vobu_ea;
min_output_size = dsi_pack.dsi_gi.vobu_1stref_ea;
/**
* If we're not at the end of this cell, we can determine the next
* VOBU to display using the VOBU_SRI information section of the
* DSI. Using this value correctly follows the current angle,
* avoiding the doubled scenes in The Matrix, and makes our life
* really happy.
*
* Otherwise, we set our next address past the end of this cell to
* force the code above to go to the next cell in the program.
*/
if (dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL)
next_vobu = cur_pack + (dsi_pack.vobu_sri.next_vobu & 0x7fffffff);
else
next_vobu = cur_pack + cur_output_size + 1;
if (dsi_pack.vobu_sri.prev_vobu != SRI_END_OF_CELL)
prev_vobu = cur_pack - (dsi_pack.vobu_sri.prev_vobu & 0x7fffffff);
else {
#ifdef DVDDEBUG
dsyslog(LOG_INFO, "DVD: cur: %x, prev: %x", cur_pack, dsi_pack.vobu_sri.prev_vobu);
#endif
prev_vobu = 0x80000000;
}
#ifdef DVDDEBUG
dsyslog(LOG_INFO, "DVD: curr: %x, next: %x, prev: %x", cur_pack, next_vobu, prev_vobu);
#endif
if (cur_output_size >= 1024) {
esyslog(LOG_ERR, "ERROR: cur_output_size >= 1024");
return;
}
cur_pack++;
NextState(cREADFRAME);
break;
}
case cREADFRAME:
{
bool trickMode = (playMode == pmFast || (playMode == pmSlow && playDir == pdBackward));
/* FIXME:
* the entire trickMode code relies on the assumtion
* that there is only one I-FRAME per PACK
*
* I have no clue wether that is correct or not !!!
*/
if (trickMode && (skipCnt++ % 4 != 0)) {
cur_pack = (playDir == pdForward) ? next_vobu : prev_vobu;
NextState(cOUTPACK);
break;
}
if (trickMode)
cur_output_size = min_output_size;
/**
* Read in cursize packs.
*/
#ifdef DVDDEBUG
dsyslog(LOG_INFO, "DVD: read pack: %d", cur_pack);
#endif
int len = DVDReadBlocks(title, cur_pack, cur_output_size, data);
if (len != (int)cur_output_size) {
esyslog(LOG_ERR, "ERROR: read failed for %d blocks at %d", cur_output_size, cur_pack);
doplay = false;
break;
}
pktcnt = 0;
NextState(cOUTFRAMES);
break;
}
case cOUTFRAMES:
{
bool trickMode = (playMode == pmFast || (playMode == pmSlow && playDir == pdBackward));
/**
* Output cursize packs.
*/
if (pktcnt >= cur_output_size) {
cur_pack = next_vobu;
NextState(cOUTPACK);
break;
}
//dsyslog(LOG_INFO, "DVD: pack: %d, frame: %d", cur_pack, pktcnt);
if (decode_packet(&data[pktcnt * DVD_VIDEO_LB_LEN], trickMode) != 1) { //we've got a video packet
if (trickMode) {
//dsyslog(LOG_INFO, "DVD: did pack: %d", pktcnt);
cur_pack = (playDir == pdForward) ? next_vobu : prev_vobu;
NextState(cOUTPACK);
break;
}
}
pktcnt++;
if (pktcnt >= cur_output_size) {
cur_pack = next_vobu;
NextState(cOUTPACK);
break;
}
break;
}
default:
{
esyslog(LOG_ERR, "ERROR: cyclestate %d not known", cyclestate);
return;
}
}
// dsyslog(LOG_INF, "DVD: new cyclestate: %d, pktcnt: %d, cur: %d", cyclestate, pktcnt, cur_output_size);
}
dsyslog(LOG_INFO, "input thread ended (pid=%d)", getpid());
}
#define NO_PICTURE 0
#define SC_PICTURE 0x00
inline bool cDVDplayBuffer::PacketStart(uchar **Data, int len)
{
while (len > 6 && !((*Data)[0] == 0x00 && (*Data)[1] == 0x00 && (*Data)[2] == 0x01))
(*Data)++;
return ((*Data)[0] == 0x00 && (*Data)[1] == 0x00 && (*Data)[2] == 0x01);
}
inline int cDVDplayBuffer::GetPacketType(const uchar *Data)
{
return Data[3];
}
inline int cDVDplayBuffer::GetStuffingLen(const uchar *Data)
{
return Data[13] & 0x07;
}
inline int cDVDplayBuffer::GetPacketLength(const uchar *Data)
{
return (Data[4] << 8) + Data[5] + 6;
}
inline int cDVDplayBuffer::GetPESHeaderLength(const uchar *Data)
{
return (Data[8]);
}
int cDVDplayBuffer::ScanVideoPacket(const uchar *Data, int Count, uchar *PictureType)
{
// Scans the video packet starting at Offset and returns its length.
// If the return value is -1 the packet was not completely in the buffer.
int Length = GetPacketLength(Data);
if (Length > 0 && Length <= Count) {
int i = 8; // the minimum length of the video packet header
i += Data[i] + 1; // possible additional header bytes
for (; i < Length; i++) {
if (Data[i] == 0 && Data[i + 1] == 0 && Data[i + 2] == 1) {
switch (Data[i + 3]) {
case SC_PICTURE: *PictureType = (uchar)(Data[i + 5] >> 3) & 0x07;
return Length;
}
}
}
PictureType = NO_PICTURE;
return Length;
}
return -1;
}
void cDVDplayBuffer::handleAC3(unsigned char *sector, int length, uchar PTSflags, uchar *PTSdata)
{
#define PCM_FRAME_SIZE 1536
AC3toPCM.Put(sector, length);
cFrame *frame;
if (ac3_buffersize() <= 100) {
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;
//make sure we got a PS packet header
if (!PacketStart(&sector, DVD_VIDEO_LB_LEN) && GetPacketType(sector) != 0xBA) {
esyslog(LOG_ERR, "ERROR: got unexpected packet: %x %x %x %x", sector[0], sector[1], sector[2], sector[3]);
return -1;
}
int offset = 14 + GetStuffingLen(sector);
sector += offset;
int r = DVD_VIDEO_LB_LEN - offset;
int datalen = r;
sector[6] &= 0x8f;
uchar PTSflags = sector[7] >> 6;
uchar *PTSdata = sector + 9;
uchar *data = sector;
switch (GetPacketType(sector)) {
case VIDEO_STREAM_S ... VIDEO_STREAM_E:
{
ScanVideoPacket(sector, r, &pt);
if (trickMode && pt != 1)
return pt;
putFrame(sector, r, ftVideo);
break;
}
case AUDIO_STREAM_S ... AUDIO_STREAM_E: {
// no sound in trick mode
if (trickMode)
return 1;
if (audioTrack != GetPacketType(sector))
return 5;
putFrame(sector, r, ftAudio);
break;
}
case PRIVATE_STREAM1:
{
datalen = GetPacketLength(sector);
//skip optional Header bytes
datalen -= GetPESHeaderLength(sector);
data += GetPESHeaderLength(sector);
//skip mandatory header bytes
data += 3;
//fallthrough is intended
}
case PRIVATE_STREAM2:
{
//FIXME: Stream1 + Stream2 is ok, but is Stream2 alone also?
// no sound in trick mode
if (trickMode)
return 1;
// skip PS header bytes
data += 6;
// data now points to the beginning of the payload
if (audioTrack == *data) {
switch (audioTrack & 0xF8) {
case aAC3:
if (dolbyDev)
putFrame(sector, r, ftDolby);
data += 4;
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), ftAudio);
break;
default:
break;
}
}
return pt;
}
default:
case SYSTEM_HEADER:
case PROG_STREAM_MAP:
{
esyslog(LOG_ERR, "ERROR: don't know what to do - packetType: %x", GetPacketType(sector));
// just skip them for now,l but try to debug it
dsyslog(LOG_INFO, "DVD: curr cell: %8x, Nr of cells: %8x", cur_cell, cur_pgc->nr_of_cells);
dsyslog(LOG_INFO, "DVD: curr pack: %8x, last sector: %8x", cur_pack, cur_pgc->cell_playback[cur_cell].last_sector);
dsyslog(LOG_INFO, "DVD: curr pkt: %8x, output size: %8x", pktcnt, cur_output_size);
#if 0
// looks like my DVD is/was brocken .......
for (int n = 0; n <= 255; n++) {
dsyslog(LOG_INFO, "%4x %2x %2x %2x %2x %2x %2x %2x %2x", n * 8,
osect[n * 8 + 0], osect[n * 8 + 1], osect[n * 8 + 2], osect[n * 8 + 3],
osect[n * 8 + 4], osect[n * 8 + 5], osect[n * 8 + 6], osect[n * 8 + 7]);
}
return 0;
#endif
return pt;
}
}
return pt;
}
void cDVDplayBuffer::Empty(bool Block)
{
if (!(blockInput || blockOutput)) {
cPlayBuffer::Empty(true);
AC3toPCM.Clear();
}
if (!Block)
cPlayBuffer::Empty(false);
}
void cDVDplayBuffer::Close(void)
{
dvd->Close();
}
int cDVDplayBuffer::SkipFrames(int Frames)
{
return -1;
}
/* Figure out the correct pgN from the cell and update state. */
void cDVDplayBuffer::setChapid(void)
{
int new_pgN = 0;
while (new_pgN < cur_pgc->nr_of_programs && cur_cell >= cur_pgc->program_map[new_pgN])
new_pgN++;
if (new_pgN == cur_pgc->nr_of_programs) { /* We are at the last program */
if (cur_cell > cur_pgc->nr_of_cells)
chapid = 1; /* We are past the last cell */
}
chapid = new_pgN;
}
void cDVDplayBuffer::SkipSeconds(int Seconds)
{
if (Seconds) {
setChapid();
int newchapid = Seconds > 0 ? chapid + 1 : chapid - 1;
if (newchapid >= 0 && newchapid < tt_srpt->title[titleid].nr_of_ptts) {
Empty(true);
chapid = newchapid;
NextState(cOPENCHAPTER);
AC3toPCM.Clear();
Empty(false);
Play();
}
}
}
void cDVDplayBuffer::Goto(int Index, bool Still)
{
}
void cDVDplayBuffer::GetIndex(int &Current, int &Total, bool SnapToIFrame)
{
Current = Total = -1;
}
#endif //DVDSUPPORT
// --- cTransferBuffer -------------------------------------------------------
class cTransferBuffer : public cRingBufferLinear {
private:
cDvbApi *dvbApi;
int fromDevice, toDevice;
bool gotBufferReserve;
cRemux remux;
protected:
virtual void Input(void);
virtual void Output(void);
public:
cTransferBuffer(cDvbApi *DvbApi, int ToDevice, int VPid, int APid);
virtual ~cTransferBuffer();
void SetAudioPid(int APid);
};
cTransferBuffer::cTransferBuffer(cDvbApi *DvbApi, int ToDevice, int VPid, int APid)
:cRingBufferLinear(VIDEOBUFSIZE, true)
,remux(VPid, APid, 0, 0, 0)
{
dvbApi = DvbApi;
fromDevice = dvbApi->SetModeRecord();
toDevice = ToDevice;
gotBufferReserve = false;
Start();
}
cTransferBuffer::~cTransferBuffer()
{
Stop();
dvbApi->SetModeNormal(true);
}
void cTransferBuffer::SetAudioPid(int APid)
{
Clear();
//XXX we may need to have access to the audio device, too, in order to clear it
CHECK(ioctl(toDevice, VIDEO_CLEAR_BUFFER));
gotBufferReserve = false;
remux.SetAudioPid(APid);
}
void cTransferBuffer::Input(void)
{
dsyslog(LOG_INFO, "input thread started (pid=%d)", getpid());
uchar b[MINVIDEODATA];
int n = 0;
while (Busy()) {
cFile::FileReady(fromDevice, 100);
int r = read(fromDevice, b + n, sizeof(b) - n);
if (r > 0) {
n += r;
int Count = n, Result;
const uchar *p = remux.Process(b, Count, Result);
if (p) {
while (Result > 0 && Busy()) {
int w = Put(p, Result);
p += w;
Result -= w;
}
}
if (Count > 0) {
n -= Count;
memmove(b, b + Count, n);
}
}
else if (r < 0) {
if (FATALERRNO) {
if (errno == EBUFFEROVERFLOW) // this error code is not defined in the library
esyslog(LOG_ERR, "ERROR (%s,%d): DVB driver buffer overflow", __FILE__, __LINE__);
else {
LOG_ERROR;
break;
}
}
}
}
dsyslog(LOG_INFO, "input thread ended (pid=%d)", getpid());
}
void cTransferBuffer::Output(void)
{
dsyslog(LOG_INFO, "output thread started (pid=%d)", getpid());
uchar b[MINVIDEODATA];
while (Busy()) {
if (!gotBufferReserve) {
if (Available() < MAXFRAMESIZE) {
usleep(100000); // allow the buffer to collect some reserve
continue;
}
else
gotBufferReserve = true;
}
int r = Get(b, sizeof(b));
if (r > 0) {
uchar *p = b;
while (r > 0 && Busy()) {
int w = write(toDevice, p, r);
if (w > 0) {
p += w;
r -= w;
}
else if (w < 0 && FATALERRNO) {
LOG_ERROR;
Stop();
return;
}
}
}
else
usleep(1); // this keeps the CPU load low
}
dsyslog(LOG_INFO, "output thread ended (pid=%d)", getpid());
}
// --- cCuttingBuffer --------------------------------------------------------
class cCuttingBuffer : public cThread {
private:
const char *error;
bool active;
int fromFile, toFile;
cFileName *fromFileName, *toFileName;
cIndexFile *fromIndex, *toIndex;
cMarks fromMarks, toMarks;
protected:
virtual void Action(void);
public:
cCuttingBuffer(const char *FromFileName, const char *ToFileName);
virtual ~cCuttingBuffer();
const char *Error(void) { return error; }
};
cCuttingBuffer::cCuttingBuffer(const char *FromFileName, const char *ToFileName)
{
error = NULL;
active = false;
fromFile = toFile = -1;
fromFileName = toFileName = NULL;
fromIndex = toIndex = NULL;
if (fromMarks.Load(FromFileName) && fromMarks.Count()) {
fromFileName = new cFileName(FromFileName, false, true);
toFileName = new cFileName(ToFileName, true, true);
fromIndex = new cIndexFile(FromFileName, false);
toIndex = new cIndexFile(ToFileName, true);
toMarks.Load(ToFileName); // doesn't actually load marks, just sets the file name
Start();
}
else
esyslog(LOG_ERR, "no editing marks found for %s", FromFileName);
}
cCuttingBuffer::~cCuttingBuffer()
{
active = false;
Cancel(3);
delete fromFileName;
delete toFileName;
delete fromIndex;
delete toIndex;
}
void cCuttingBuffer::Action(void)
{
dsyslog(LOG_INFO, "video cutting thread started (pid=%d)", getpid());
cMark *Mark = fromMarks.First();
if (Mark) {
fromFile = fromFileName->Open();
toFile = toFileName->Open();
active = fromFile >= 0 && toFile >= 0;
int Index = Mark->position;
Mark = fromMarks.Next(Mark);
int FileSize = 0;
int CurrentFileNumber = 0;
int LastIFrame = 0;
toMarks.Add(0);
toMarks.Save();
uchar buffer[MAXFRAMESIZE];
while (active) {
uchar FileNumber;
int FileOffset, Length;
uchar PictureType;
// Make sure there is enough disk space:
AssertFreeDiskSpace();
// Read one frame:
if (fromIndex->Get(Index++, &FileNumber, &FileOffset, &PictureType, &Length)) {
if (FileNumber != CurrentFileNumber) {
fromFile = fromFileName->SetOffset(FileNumber, FileOffset);
CurrentFileNumber = FileNumber;
}
if (fromFile >= 0) {
Length = ReadFrame(fromFile, buffer, Length, sizeof(buffer));
if (Length < 0) {
error = "ReadFrame";
break;
}
}
else {
error = "fromFile";
break;
}
}
else
break;
// Write one frame:
if (PictureType == I_FRAME) { // every file shall start with an I_FRAME
if (!Mark) // edited version shall end before next I-frame
break;
if (FileSize > MEGABYTE(Setup.MaxVideoFileSize)) {
toFile = toFileName->NextFile();
if (toFile < 0) {
error = "toFile 1";
break;
}
FileSize = 0;
}
LastIFrame = 0;
}
if (safe_write(toFile, buffer, Length) != Length) {
error = "safe_write";
break;
}
if (!toIndex->Write(PictureType, toFileName->Number(), FileSize)) {
error = "toIndex";
break;
}
FileSize += Length;
if (!LastIFrame)
LastIFrame = toIndex->Last();
// Check editing marks:
if (Mark && Index >= Mark->position) {
Mark = fromMarks.Next(Mark);
toMarks.Add(LastIFrame);
if (Mark)
toMarks.Add(toIndex->Last() + 1);
toMarks.Save();
if (Mark) {
Index = Mark->position;
Mark = fromMarks.Next(Mark);
CurrentFileNumber = 0; // triggers SetOffset before reading next frame
if (Setup.SplitEditedFiles) {
toFile = toFileName->NextFile();
if (toFile < 0) {
error = "toFile 2";
break;
}
FileSize = 0;
}
}
// the 'else' case (i.e. 'final end mark reached') is handled above
// in 'Write one frame', so that the edited version will end right
// before the next I-frame.
}
}
}
else
esyslog(LOG_ERR, "no editing marks found!");
dsyslog(LOG_INFO, "end video cutting thread");
}
// --- cVideoCutter ----------------------------------------------------------
char *cVideoCutter::editedVersionName = NULL;
cCuttingBuffer *cVideoCutter::cuttingBuffer = NULL;
bool cVideoCutter::error = false;
bool cVideoCutter::ended = false;
bool cVideoCutter::Start(const char *FileName)
{
if (!cuttingBuffer) {
error = false;
ended = false;
cRecording Recording(FileName);
const char *evn = Recording.PrefixFileName('%');
if (evn && RemoveVideoFile(evn) && MakeDirs(evn, true)) {
editedVersionName = strdup(evn);
Recording.WriteSummary();
cuttingBuffer = new cCuttingBuffer(FileName, editedVersionName);
return true;
}
}
return false;
}
void cVideoCutter::Stop(void)
{
bool Interrupted = cuttingBuffer && cuttingBuffer->Active();
const char *Error = cuttingBuffer ? cuttingBuffer->Error() : NULL;
delete cuttingBuffer;
cuttingBuffer = NULL;
if ((Interrupted || Error) && editedVersionName) {
if (Interrupted)
isyslog(LOG_INFO, "editing process has been interrupted");
if (Error)
esyslog(LOG_ERR, "ERROR: '%s' during editing process", Error);
RemoveVideoFile(editedVersionName); //XXX what if this file is currently being replayed?
}
}
bool cVideoCutter::Active(void)
{
if (cuttingBuffer) {
if (cuttingBuffer->Active())
return true;
error = cuttingBuffer->Error();
Stop();
if (!error)
cRecordingUserCommand::InvokeCommand(RUC_EDITEDRECORDING, editedVersionName);
delete editedVersionName;
editedVersionName = NULL;
ended = true;
}
return false;
}
bool cVideoCutter::Error(void)
{
bool result = error;
error = false;
return result;
}
bool cVideoCutter::Ended(void)
{
bool result = ended;
ended = false;
return result;
}
// --- cDvbApi ---------------------------------------------------------------
static const char *OstName(const char *Name, int n)
{
static char buffer[_POSIX_PATH_MAX];
snprintf(buffer, sizeof(buffer), "%s%d", Name, n);
return buffer;
}
static int OstOpen(const char *Name, int n, int Mode, bool ReportError = false)
{
const char *FileName = OstName(Name, n);
int fd = open(FileName, Mode);
if (fd < 0 && ReportError)
LOG_ERROR_STR(FileName);
return fd;
}
int cDvbApi::NumDvbApis = 0;
int cDvbApi::useDvbApi = 0;
cDvbApi *cDvbApi::dvbApi[MAXDVBAPI] = { NULL };
cDvbApi *cDvbApi::PrimaryDvbApi = NULL;
char *cDvbApi::audioCommand = NULL;
cDvbApi::cDvbApi(int n)
{
frontendType = FrontendType(-1); // don't know how else to initialize this - there is no FE_UNKNOWN
vPid = aPid1 = aPid2 = dPid1 = dPid2 = 0;
siProcessor = NULL;
recordBuffer = NULL;
replayBuffer = NULL;
transferBuffer = NULL;
transferringFromDvbApi = NULL;
ca = 0;
priority = -1;
cardIndex = n;
// Devices that are only present on DVB-C or DVB-S cards:
fd_frontend = OstOpen(DEV_OST_FRONTEND, n, O_RDWR);
fd_sec = OstOpen(DEV_OST_SEC, n, O_RDWR);
// Devices that all DVB cards must have:
fd_demuxv = OstOpen(DEV_OST_DEMUX, n, O_RDWR | O_NONBLOCK, true);
fd_demuxa1 = OstOpen(DEV_OST_DEMUX, n, O_RDWR | O_NONBLOCK, true);
fd_demuxa2 = OstOpen(DEV_OST_DEMUX, n, O_RDWR | O_NONBLOCK, true);
fd_demuxd1 = OstOpen(DEV_OST_DEMUX, n, O_RDWR | O_NONBLOCK, true);
fd_demuxd2 = OstOpen(DEV_OST_DEMUX, n, O_RDWR | O_NONBLOCK, true);
fd_demuxt = OstOpen(DEV_OST_DEMUX, n, O_RDWR | O_NONBLOCK, true);
// Devices not present on "budget" cards:
fd_osd = OstOpen(DEV_OST_OSD, n, O_RDWR);
fd_video = OstOpen(DEV_OST_VIDEO, n, O_RDWR | O_NONBLOCK);
fd_audio = OstOpen(DEV_OST_AUDIO, n, O_RDWR | O_NONBLOCK);
// Devices that will be dynamically opened and closed when necessary:
fd_dvr = -1;
// Video format:
SetVideoFormat(Setup.VideoFormat ? VIDEO_FORMAT_16_9 : VIDEO_FORMAT_4_3);
// We only check the devices that must be present - the others will be checked before accessing them:
if (fd_frontend >= 0 && fd_demuxv >= 0 && fd_demuxa1 >= 0 && fd_demuxa2 >= 0 && fd_demuxd1 >= 0 && fd_demuxd2 >= 0 && fd_demuxt >= 0) {
siProcessor = new cSIProcessor(OstName(DEV_OST_DEMUX, n));
if (!dvbApi[0]) // only the first one shall set the system time
siProcessor->SetUseTSTime(Setup.SetSystemTime);
FrontendInfo feinfo;
CHECK(ioctl(fd_frontend, FE_GET_INFO, &feinfo));
frontendType = feinfo.type;
}
else
esyslog(LOG_ERR, "ERROR: can't open video device %d", n);
cols = rows = 0;
#if defined(DEBUG_OSD) || defined(REMOTE_KBD)
initscr();
keypad(stdscr, true);
nonl();
cbreak();
noecho();
timeout(10);
#endif
#if defined(DEBUG_OSD)
memset(&colorPairs, 0, sizeof(colorPairs));
start_color();
leaveok(stdscr, true);
window = NULL;
#else
osd = NULL;
#endif
currentChannel = 1;
mute = false;
volume = MAXVOLUME;
}
cDvbApi::~cDvbApi()
{
delete siProcessor;
Close();
StopReplay();
StopRecord();
StopTransfer();
// We're not explicitly closing any device files here, since this sometimes
// caused segfaults. Besides, the program is about to terminate anyway...
#if defined(DEBUG_OSD) || defined(REMOTE_KBD)
endwin();
#endif
}
void cDvbApi::SetUseDvbApi(int n)
{
if (n < MAXDVBAPI)
useDvbApi |= (1 << n);
}
bool cDvbApi::SetPrimaryDvbApi(int n)
{
n--;
if (0 <= n && n < NumDvbApis && dvbApi[n]) {
isyslog(LOG_INFO, "setting primary DVB to %d", n + 1);
PrimaryDvbApi = dvbApi[n];
return true;
}
esyslog(LOG_ERR, "invalid DVB interface: %d", n + 1);
return false;
}
cDvbApi *cDvbApi::GetDvbApi(int Ca, int Priority)
{
cDvbApi *d = NULL, *dMinPriority = NULL;
int index = Ca - 1;
for (int i = 0; i < MAXDVBAPI; i++) {
if (dvbApi[i]) {
if (dvbApi[i]->CardIndex() == index) { // means we need exactly _this_ device
d = dvbApi[i];
break;
}
else if (Ca == 0) { // means any device would be acceptable
if (!d || !dvbApi[i]->Recording() || (d->Recording() && d->Priority() > dvbApi[i]->Priority()))
d = dvbApi[i]; // this is one that is either not currently recording or has the lowest priority
if (d && d != PrimaryDvbApi && !d->Recording()) // avoids the PrimaryDvbApi if possible
break;
if (d && d->Recording() && d->Priority() < Setup.PrimaryLimit && (!dMinPriority || d->Priority() < dMinPriority->Priority()))
dMinPriority = d; // this is the one with the lowest priority below Setup.PrimaryLimit
}
}
}
if (d == PrimaryDvbApi) { // the PrimaryDvbApi was the only one that was free
if (Priority < Setup.PrimaryLimit)
return NULL; // not enough priority to use the PrimaryDvbApi
if (dMinPriority) // there's one that must not use the PrimaryDvbApi...
d = dMinPriority; // ...so let's kick out that one
}
return (d // we found one...
&& (!d->Recording() // ...that's either not currently recording...
|| d->Priority() < Priority // ...or has a lower priority...
|| (!d->Ca() && Ca))) // ...or doesn't need this card
? d : NULL;
}
bool cDvbApi::Probe(const char *FileName)
{
if (access(FileName, F_OK) == 0) {
dsyslog(LOG_INFO, "probing %s", FileName);
int f = open(FileName, O_RDONLY);
if (f >= 0) {
close(f);
return true;
}
else if (errno != ENODEV && errno != EINVAL)
LOG_ERROR_STR(FileName);
}
else if (errno != ENOENT)
LOG_ERROR_STR(FileName);
return false;
}
bool cDvbApi::Init(void)
{
NumDvbApis = 0;
for (int i = 0; i < MAXDVBAPI; i++) {
if (useDvbApi == 0 || (useDvbApi & (1 << i)) != 0) {
if (Probe(OstName(DEV_OST_FRONTEND, i)))
dvbApi[NumDvbApis++] = new cDvbApi(i);
else
break;
}
}
PrimaryDvbApi = dvbApi[0];
if (NumDvbApis > 0)
isyslog(LOG_INFO, "found %d video device%s", NumDvbApis, NumDvbApis > 1 ? "s" : "");
else
esyslog(LOG_ERR, "ERROR: no video device found, giving up!");
return NumDvbApis > 0;
}
void cDvbApi::Cleanup(void)
{
for (int i = 0; i < MAXDVBAPI; i++) {
delete dvbApi[i];
dvbApi[i] = NULL;
}
PrimaryDvbApi = NULL;
}
const cSchedules *cDvbApi::Schedules(cThreadLock *ThreadLock) const
{
if (siProcessor && ThreadLock->Lock(siProcessor))
return siProcessor->Schedules();
return NULL;
}
bool cDvbApi::GrabImage(const char *FileName, bool Jpeg, int Quality, int SizeX, int SizeY)
{
int videoDev = OstOpen(DEV_VIDEO, CardIndex(), O_RDWR, true);
if (videoDev >= 0) {
int result = 0;
struct video_mbuf mbuf;
result |= ioctl(videoDev, VIDIOCGMBUF, &mbuf);
if (result == 0) {
int msize = mbuf.size;
unsigned char *mem = (unsigned char *)mmap(0, msize, PROT_READ | PROT_WRITE, MAP_SHARED, videoDev, 0);
if (mem && mem != (unsigned char *)-1) {
// set up the size and RGB
struct video_capability vc;
result |= ioctl(videoDev, VIDIOCGCAP, &vc);
struct video_mmap vm;
vm.frame = 0;
if ((SizeX > 0) && (SizeX <= vc.maxwidth) &&
(SizeY > 0) && (SizeY <= vc.maxheight)) {
vm.width = SizeX;
vm.height = SizeY;
}
else {
vm.width = vc.maxwidth;
vm.height = vc.maxheight;
}
vm.format = VIDEO_PALETTE_RGB24;
result |= ioctl(videoDev, VIDIOCMCAPTURE, &vm);
result |= ioctl(videoDev, VIDIOCSYNC, &vm.frame);
// make RGB out of BGR:
int memsize = vm.width * vm.height;
unsigned char *mem1 = mem;
for (int i = 0; i < memsize; i++) {
unsigned char tmp = mem1[2];
mem1[2] = mem1[0];
mem1[0] = tmp;
mem1 += 3;
}
if (Quality < 0)
Quality = 255; //XXX is this 'best'???
isyslog(LOG_INFO, "grabbing to %s (%s %d %d %d)", FileName, Jpeg ? "JPEG" : "PNM", Quality, vm.width, vm.height);
FILE *f = fopen(FileName, "wb");
if (f) {
if (Jpeg) {
// write JPEG file:
struct jpeg_compress_struct cinfo;
struct jpeg_error_mgr jerr;
cinfo.err = jpeg_std_error(&jerr);
jpeg_create_compress(&cinfo);
jpeg_stdio_dest(&cinfo, f);
cinfo.image_width = vm.width;
cinfo.image_height = vm.height;
cinfo.input_components = 3;
cinfo.in_color_space = JCS_RGB;
jpeg_set_defaults(&cinfo);
jpeg_set_quality(&cinfo, Quality, true);
jpeg_start_compress(&cinfo, true);
int rs = vm.width * 3;
JSAMPROW rp[vm.height];
for (int k = 0; k < vm.height; k++)
rp[k] = &mem[rs * k];
jpeg_write_scanlines(&cinfo, rp, vm.height);
jpeg_finish_compress(&cinfo);
jpeg_destroy_compress(&cinfo);
}
else {
// write PNM file:
if (fprintf(f, "P6\n%d\n%d\n255\n", vm.width, vm.height) < 0 ||
fwrite(mem, vm.width * vm.height * 3, 1, f) < 0) {
LOG_ERROR_STR(FileName);
result |= 1;
}
}
fclose(f);
}
else {
LOG_ERROR_STR(FileName);
result |= 1;
}
munmap(mem, msize);
}
else
result |= 1;
}
close(videoDev);
return result == 0;
}
return false;
}
#ifdef DEBUG_OSD
void cDvbApi::SetColor(eDvbColor colorFg, eDvbColor colorBg)
{
int color = (colorBg << 16) | colorFg | 0x80000000;
for (int i = 0; i < MaxColorPairs; i++) {
if (!colorPairs[i]) {
colorPairs[i] = color;
init_pair(i + 1, colorFg, colorBg);
wattrset(window, COLOR_PAIR(i + 1));
break;
}
else if (color == colorPairs[i]) {
wattrset(window, COLOR_PAIR(i + 1));
break;
}
}
}
#endif
void cDvbApi::Open(int w, int h)
{
int d = (h < 0) ? Setup.OSDheight + h : 0;
h = abs(h);
cols = w;
rows = h;
#ifdef DEBUG_OSD
window = subwin(stdscr, h, w, d, (Setup.OSDwidth - w) / 2);
syncok(window, true);
#define B2C(b) (((b) * 1000) / 255)
#define SETCOLOR(n, r, g, b, o) init_color(n, B2C(r), B2C(g), B2C(b))
//XXX
SETCOLOR(clrBackground, 0x00, 0x00, 0x00, 127); // background 50% gray
SETCOLOR(clrBlack, 0x00, 0x00, 0x00, 255);
SETCOLOR(clrRed, 0xFC, 0x14, 0x14, 255);
SETCOLOR(clrGreen, 0x24, 0xFC, 0x24, 255);
SETCOLOR(clrYellow, 0xFC, 0xC0, 0x24, 255);
SETCOLOR(clrBlue, 0x00, 0x00, 0xFC, 255);
SETCOLOR(clrCyan, 0x00, 0xFC, 0xFC, 255);
SETCOLOR(clrMagenta, 0xB0, 0x00, 0xFC, 255);
SETCOLOR(clrWhite, 0xFC, 0xFC, 0xFC, 255);
#else
w *= charWidth;
h *= lineHeight;
d *= lineHeight;
int x = (720 - w + charWidth) / 2; //TODO PAL vs. NTSC???
int y = (576 - Setup.OSDheight * lineHeight) / 2 + d;
//XXX
osd = new cDvbOsd(fd_osd, x, y);
//XXX TODO this should be transferred to the places where the individual windows are requested (there's too much detailed knowledge here!)
if (h / lineHeight == 5) { //XXX channel display
osd->Create(0, 0, w, h, 4);
}
else if (h / lineHeight == 1) { //XXX info display
osd->Create(0, 0, w, h, 4);
}
else if (d == 0) { //XXX full menu
osd->Create(0, 0, w, lineHeight, 2);
osd->Create(0, lineHeight, w, (Setup.OSDheight - 3) * lineHeight, 2);
osd->AddColor(clrBackground);
osd->AddColor(clrCyan);
osd->AddColor(clrWhite);
osd->AddColor(clrBlack);
osd->Create(0, (Setup.OSDheight - 2) * lineHeight, w, 2 * lineHeight, 4);
}
else { //XXX progress display
/*XXX
osd->Create(0, 0, w, lineHeight, 1);
osd->Create(0, lineHeight, w, lineHeight, 2, false);
osd->Create(0, 2 * lineHeight, w, lineHeight, 1);
XXX*///XXX some pixels are not drawn correctly with lower bpp values
osd->Create(0, 0, w, 3*lineHeight, 4);
}
#endif
}
void cDvbApi::Close(void)
{
#ifdef DEBUG_OSD
if (window) {
delwin(window);
window = 0;
}
#else
delete osd;
osd = NULL;
#endif
}
void cDvbApi::Clear(void)
{
#ifdef DEBUG_OSD
SetColor(clrBackground, clrBackground);
Fill(0, 0, cols, rows, clrBackground);
#else
osd->Clear();
#endif
}
void cDvbApi::Fill(int x, int y, int w, int h, eDvbColor color)
{
if (x < 0) x = cols + x;
if (y < 0) y = rows + y;
#ifdef DEBUG_OSD
SetColor(color, color);
for (int r = 0; r < h; r++) {
wmove(window, y + r, x); // ncurses wants 'y' before 'x'!
whline(window, ' ', w);
}
wsyncup(window); // shouldn't be necessary because of 'syncok()', but w/o it doesn't work
#else
osd->Fill(x * charWidth, y * lineHeight, (x + w) * charWidth - 1, (y + h) * lineHeight - 1, color);
#endif
}
void cDvbApi::SetBitmap(int x, int y, const cBitmap &Bitmap)
{
#ifndef DEBUG_OSD
osd->SetBitmap(x, y, Bitmap);
#endif
}
void cDvbApi::ClrEol(int x, int y, eDvbColor color)
{
Fill(x, y, cols - x, 1, color);
}
int cDvbApi::CellWidth(void)
{
#ifdef DEBUG_OSD
return 1;
#else
return charWidth;
#endif
}
int cDvbApi::LineHeight(void)
{
#ifdef DEBUG_OSD
return 1;
#else
return lineHeight;
#endif
}
int cDvbApi::Width(unsigned char c)
{
#ifdef DEBUG_OSD
return 1;
#else
return osd->Width(c);
#endif
}
int cDvbApi::WidthInCells(const char *s)
{
#ifdef DEBUG_OSD
return strlen(s);
#else
return (osd->Width(s) + charWidth - 1) / charWidth;
#endif
}
eDvbFont cDvbApi::SetFont(eDvbFont Font)
{
#ifdef DEBUG_OSD
return Font;
#else
return osd->SetFont(Font);
#endif
}
void cDvbApi::Text(int x, int y, const char *s, eDvbColor colorFg, eDvbColor colorBg)
{
if (x < 0) x = cols + x;
if (y < 0) y = rows + y;
#ifdef DEBUG_OSD
SetColor(colorFg, colorBg);
wmove(window, y, x); // ncurses wants 'y' before 'x'!
waddnstr(window, s, cols - x);
#else
osd->Text(x * charWidth, y * lineHeight, s, colorFg, colorBg);
#endif
}
void cDvbApi::Flush(void)
{
#ifdef DEBUG_OSD
refresh();
#else
if (osd)
osd->Flush();
#endif
}
int cDvbApi::SetModeRecord(void)
{
// Sets up the DVB device for recording
SetPids(true);
if (fd_dvr >= 0)
close(fd_dvr);
fd_dvr = OstOpen(DEV_OST_DVR, CardIndex(), O_RDONLY | O_NONBLOCK);
if (fd_dvr < 0)
LOG_ERROR;
return fd_dvr;
}
void cDvbApi::SetModeReplay(void)
{
// Sets up the DVB device for replay
if (fd_video >= 0 && fd_audio >= 0) {
if (siProcessor)
siProcessor->SetStatus(false);
CHECK(ioctl(fd_video, VIDEO_SET_BLANK, true));
CHECK(ioctl(fd_audio, AUDIO_SELECT_SOURCE, AUDIO_SOURCE_MEMORY));
CHECK(ioctl(fd_audio, AUDIO_SET_AV_SYNC, true));
CHECK(ioctl(fd_audio, AUDIO_PLAY));
CHECK(ioctl(fd_video, VIDEO_SELECT_SOURCE, VIDEO_SOURCE_MEMORY));
CHECK(ioctl(fd_video, VIDEO_PLAY));
}
}
void cDvbApi::SetModeNormal(bool FromRecording)
{
// Puts the DVB device back into "normal" viewing mode (after replay or recording)
if (FromRecording) {
close(fd_dvr);
fd_dvr = -1;
SetPids(false);
}
else {
if (fd_video >= 0 && fd_audio >= 0) {
CHECK(ioctl(fd_video, VIDEO_STOP, true));
CHECK(ioctl(fd_audio, AUDIO_STOP, true));
CHECK(ioctl(fd_video, VIDEO_CLEAR_BUFFER));
CHECK(ioctl(fd_audio, AUDIO_CLEAR_BUFFER));
CHECK(ioctl(fd_video, VIDEO_SELECT_SOURCE, VIDEO_SOURCE_DEMUX));
CHECK(ioctl(fd_audio, AUDIO_SELECT_SOURCE, AUDIO_SOURCE_DEMUX));
CHECK(ioctl(fd_audio, AUDIO_SET_AV_SYNC, true));
CHECK(ioctl(fd_audio, AUDIO_SET_MUTE, false));
if (siProcessor)
siProcessor->SetStatus(true);
}
}
}
void cDvbApi::SetVideoFormat(videoFormat_t Format)
{
if (fd_video >= 0)
CHECK(ioctl(fd_video, VIDEO_SET_FORMAT, Format));
}
bool cDvbApi::SetPid(int fd, dmxPesType_t PesType, int Pid, dmxOutput_t Output)
{
if (Pid) {
CHECK(ioctl(fd, DMX_STOP));
dmxPesFilterParams pesFilterParams;
pesFilterParams.pid = Pid;
pesFilterParams.input = DMX_IN_FRONTEND;
pesFilterParams.output = Output;
pesFilterParams.pesType = PesType;
pesFilterParams.flags = DMX_IMMEDIATE_START;
if (ioctl(fd, DMX_SET_PES_FILTER, &pesFilterParams) < 0) {
if (Pid != 0x1FFF)
LOG_ERROR;
return false;
}
}
return true;
}
bool cDvbApi::SetPids(bool ForRecording)
{
return SetVpid(vPid, ForRecording ? DMX_OUT_TS_TAP : DMX_OUT_DECODER) &&
SetApid1(aPid1, ForRecording ? DMX_OUT_TS_TAP : DMX_OUT_DECODER) &&
SetApid2(ForRecording ? aPid2 : 0, DMX_OUT_TS_TAP) &&
SetDpid1(ForRecording ? dPid1 : 0, DMX_OUT_TS_TAP) &&
SetDpid2(ForRecording ? dPid2 : 0, DMX_OUT_TS_TAP);
}
eSetChannelResult cDvbApi::SetChannel(int ChannelNumber, int Frequency, char Polarization, int Diseqc, int Srate, int Vpid, int Apid1, int Apid2, int Dpid1, int Dpid2, int Tpid, int Ca, int Pnr)
{
// Make sure the siProcessor won't access the device while switching
cThreadLock ThreadLock(siProcessor);
StopTransfer();
StopReplay();
// Must set this anyway to avoid getting stuck when switching through
// channels with 'Up' and 'Down' keys:
currentChannel = ChannelNumber;
vPid = Vpid;
aPid1 = Apid1;
aPid2 = Apid2;
dPid1 = Dpid1;
dPid2 = Dpid2;
// Avoid noise while switching:
if (fd_video >= 0 && fd_audio >= 0) {
CHECK(ioctl(fd_audio, AUDIO_SET_MUTE, true));
CHECK(ioctl(fd_video, VIDEO_SET_BLANK, true));
CHECK(ioctl(fd_video, VIDEO_CLEAR_BUFFER));
CHECK(ioctl(fd_audio, AUDIO_CLEAR_BUFFER));
}
// If this card can't receive this channel, we must not actually switch
// the channel here, because that would irritate the driver when we
// start replaying in Transfer Mode immediately after switching the channel:
bool NeedsTransferMode = (this == PrimaryDvbApi && Ca && Ca != CardIndex() + 1);
if (!NeedsTransferMode) {
// Turn off current PIDs:
SetVpid( 0x1FFF, DMX_OUT_DECODER);
SetApid1(0x1FFF, DMX_OUT_DECODER);
SetApid2(0x1FFF, DMX_OUT_DECODER);
SetDpid1(0x1FFF, DMX_OUT_DECODER);
SetDpid2(0x1FFF, DMX_OUT_DECODER);
SetTpid( 0x1FFF, DMX_OUT_DECODER);
FrontendParameters Frontend;
switch (frontendType) {
case FE_QPSK: { // DVB-S
// Frequency offsets:
unsigned int freq = Frequency;
int tone = SEC_TONE_OFF;
if (freq < (unsigned int)Setup.LnbSLOF) {
freq -= Setup.LnbFrequLo;
tone = SEC_TONE_OFF;
}
else {
freq -= Setup.LnbFrequHi;
tone = SEC_TONE_ON;
}
Frontend.Frequency = freq * 1000UL;
Frontend.Inversion = INVERSION_AUTO;
Frontend.u.qpsk.SymbolRate = Srate * 1000UL;
Frontend.u.qpsk.FEC_inner = FEC_AUTO;
int volt = (Polarization == 'v' || Polarization == 'V') ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18;
// DiseqC:
secCommand scmd;
scmd.type = 0;
scmd.u.diseqc.addr = 0x10;
scmd.u.diseqc.cmd = 0x38;
scmd.u.diseqc.numParams = 1;
scmd.u.diseqc.params[0] = 0xF0 | ((Diseqc * 4) & 0x0F) | (tone == SEC_TONE_ON ? 1 : 0) | (volt == SEC_VOLTAGE_18 ? 2 : 0);
secCmdSequence scmds;
scmds.voltage = volt;
scmds.miniCommand = SEC_MINI_NONE;
scmds.continuousTone = tone;
scmds.numCommands = Setup.DiSEqC ? 1 : 0;
scmds.commands = &scmd;
CHECK(ioctl(fd_sec, SEC_SEND_SEQUENCE, &scmds));
}
break;
case FE_QAM: { // DVB-C
// Frequency and symbol rate:
Frontend.Frequency = Frequency * 1000000UL;
Frontend.Inversion = INVERSION_AUTO;
Frontend.u.qam.SymbolRate = Srate * 1000UL;
Frontend.u.qam.FEC_inner = FEC_AUTO;
Frontend.u.qam.QAM = QAM_64;
}
break;
case FE_OFDM: { // DVB-T
// Frequency and OFDM paramaters:
Frontend.Frequency = Frequency * 1000UL;
Frontend.Inversion = INVERSION_AUTO;
Frontend.u.ofdm.bandWidth=BANDWIDTH_8_MHZ;
Frontend.u.ofdm.HP_CodeRate=FEC_2_3;
Frontend.u.ofdm.LP_CodeRate=FEC_1_2;
Frontend.u.ofdm.Constellation=QAM_64;
Frontend.u.ofdm.TransmissionMode=TRANSMISSION_MODE_2K;
Frontend.u.ofdm.guardInterval=GUARD_INTERVAL_1_32;
Frontend.u.ofdm.HierarchyInformation=HIERARCHY_NONE;
}
break;
default:
esyslog(LOG_ERR, "ERROR: attempt to set channel with unknown DVB frontend type");
return scrFailed;
}
// Tuning:
CHECK(ioctl(fd_frontend, FE_SET_FRONTEND, &Frontend));
// Wait for channel sync:
if (cFile::FileReady(fd_frontend, 5000)) {
FrontendEvent event;
int res = ioctl(fd_frontend, FE_GET_EVENT, &event);
if (res >= 0) {
if (event.type != FE_COMPLETION_EV) {
esyslog(LOG_ERR, "ERROR: channel %d not sync'ed on DVB card %d!", ChannelNumber, CardIndex() + 1);
if (this == PrimaryDvbApi)
cThread::RaisePanic();
return scrFailed;
}
}
else
esyslog(LOG_ERR, "ERROR %d in frontend get event (channel %d, card %d)", res, ChannelNumber, CardIndex() + 1);
}
else
esyslog(LOG_ERR, "ERROR: timeout while tuning");
// PID settings:
if (!SetPids(false)) {
esyslog(LOG_ERR, "ERROR: failed to set PIDs for channel %d", ChannelNumber);
return scrFailed;
}
SetTpid(Tpid, DMX_OUT_DECODER);
if (fd_audio >= 0)
CHECK(ioctl(fd_audio, AUDIO_SET_AV_SYNC, true));
}
if (this == PrimaryDvbApi && siProcessor)
siProcessor->SetCurrentServiceID(Pnr);
eSetChannelResult Result = scrOk;
// If this DVB card can't receive this channel, let's see if we can
// use the card that actually can receive it and transfer data from there:
if (NeedsTransferMode) {
cDvbApi *CaDvbApi = GetDvbApi(Ca, 0);
if (CaDvbApi && !CaDvbApi->Recording()) {
if ((Result = CaDvbApi->SetChannel(ChannelNumber, Frequency, Polarization, Diseqc, Srate, Vpid, Apid1, Apid2, Dpid1, Dpid2, Tpid, Ca, Pnr)) == scrOk) {
SetModeReplay();
transferringFromDvbApi = CaDvbApi->StartTransfer(fd_video);
}
}
else
Result = scrNoTransfer;
}
if (fd_video >= 0 && fd_audio >= 0) {
CHECK(ioctl(fd_audio, AUDIO_SET_MUTE, false));
CHECK(ioctl(fd_video, VIDEO_SET_BLANK, false));
}
return Result;
}
bool cDvbApi::Transferring(void)
{
return transferBuffer;
}
cDvbApi *cDvbApi::StartTransfer(int TransferToVideoDev)
{
StopTransfer();
transferBuffer = new cTransferBuffer(this, TransferToVideoDev, vPid, aPid1);
return this;
}
void cDvbApi::StopTransfer(void)
{
if (transferBuffer) {
delete transferBuffer;
transferBuffer = NULL;
}
if (transferringFromDvbApi) {
transferringFromDvbApi->StopTransfer();
transferringFromDvbApi = NULL;
}
}
int cDvbApi::SecondsToFrames(int Seconds)
{
return Seconds * FRAMESPERSEC;
}
bool cDvbApi::Recording(void)
{
if (recordBuffer && !recordBuffer->Active())
StopRecord();
return recordBuffer != NULL;
}
bool cDvbApi::Replaying(void)
{
if (replayBuffer && !replayBuffer->Active())
StopReplay();
return replayBuffer != NULL;
}
bool cDvbApi::StartRecord(const char *FileName, int Ca, int Priority)
{
if (Recording()) {
esyslog(LOG_ERR, "ERROR: StartRecord() called while recording - ignored!");
return false;
}
StopTransfer();
StopReplay(); // TODO: remove this if the driver is able to do record and replay at the same time
// Check FileName:
if (!FileName) {
esyslog(LOG_ERR, "ERROR: StartRecord: file name is (null)");
return false;
}
isyslog(LOG_INFO, "record %s", FileName);
// Create directories if necessary:
if (!MakeDirs(FileName, true))
return false;
// Make sure the disk is up and running:
SpinUpDisk(FileName);
// Create recording buffer:
recordBuffer = new cRecordBuffer(this, FileName, vPid, aPid1, aPid2, dPid1, dPid2);
if (recordBuffer) {
ca = Ca;
priority = Priority;
return true;
}
else
esyslog(LOG_ERR, "ERROR: can't allocate recording buffer");
return false;
}
void cDvbApi::StopRecord(void)
{
if (recordBuffer) {
delete recordBuffer;
recordBuffer = NULL;
ca = 0;
priority = -1;
}
}
bool cDvbApi::StartReplay(const char *FileName)
{
if (Recording()) {
esyslog(LOG_ERR, "ERROR: StartReplay() called while recording - ignored!");
return false;
}
StopTransfer();
StopReplay();
if (fd_video >= 0 && fd_audio >= 0) {
// Check FileName:
if (!FileName) {
esyslog(LOG_ERR, "ERROR: StartReplay: file name is (null)");
return false;
}
isyslog(LOG_INFO, "replay %s", FileName);
// Create replay buffer:
replayBuffer = new cReplayBuffer(this, fd_video, fd_audio, FileName);
if (replayBuffer)
return true;
else
esyslog(LOG_ERR, "ERROR: can't allocate replaying buffer");
}
return false;
}
#ifdef DVDSUPPORT
bool cDvbApi::StartDVDplay(cDVD *dvd, int TitleID)
{
if (Recording()) {
esyslog(LOG_ERR, "ERROR: StartDVDplay() called while recording - ignored!");
return false;
}
StopTransfer();
StopReplay();
if (fd_video >= 0 && fd_audio >= 0) {
// Check DeviceName:
if (!dvd) {
esyslog(LOG_ERR, "ERROR: StartDVDplay: DVD device is (null)");
return false;
}
// Create replay buffer:
replayBuffer = new cDVDplayBuffer(this, fd_video, fd_audio, dvd, TitleID);
if (replayBuffer)
return true;
else
esyslog(LOG_ERR, "ERROR: can't allocate replaying buffer");
}
return false;
}
#endif //DVDSUPPORT
void cDvbApi::StopReplay(void)
{
if (replayBuffer) {
delete replayBuffer;
replayBuffer = NULL;
if (this == PrimaryDvbApi) {
// let's explicitly switch the channel back in case it was in Transfer Mode:
cChannel *Channel = Channels.GetByNumber(currentChannel);
if (Channel) {
Channel->Switch(this, false);
usleep(100000); // allow driver to sync in case a new replay will start immediately
}
}
}
}
void cDvbApi::Pause(void)
{
if (replayBuffer)
replayBuffer->Pause();
}
void cDvbApi::Play(void)
{
if (replayBuffer)
replayBuffer->Play();
}
void cDvbApi::Forward(void)
{
if (replayBuffer)
replayBuffer->Forward();
}
void cDvbApi::Backward(void)
{
if (replayBuffer)
replayBuffer->Backward();
}
void cDvbApi::SkipSeconds(int Seconds)
{
if (replayBuffer)
replayBuffer->SkipSeconds(Seconds);
}
int cDvbApi::SkipFrames(int Frames)
{
if (replayBuffer)
return replayBuffer->SkipFrames(Frames);
return -1;
}
bool cDvbApi::GetIndex(int &Current, int &Total, bool SnapToIFrame)
{
if (replayBuffer) {
replayBuffer->GetIndex(Current, Total, SnapToIFrame);
return true;
}
return false;
}
bool cDvbApi::GetReplayMode(bool &Play, bool &Forward, int &Speed)
{
return replayBuffer && replayBuffer->GetReplayMode(Play, Forward, Speed);
}
void cDvbApi::Goto(int Position, bool Still)
{
if (replayBuffer)
replayBuffer->Goto(Position, Still);
}
bool cDvbApi::CanToggleAudioTrack(void)
{
return replayBuffer ? replayBuffer->CanToggleAudioTrack() : (aPid1 && aPid2 && aPid1 != aPid2);
}
bool cDvbApi::ToggleAudioTrack(void)
{
if (replayBuffer) {
replayBuffer->ToggleAudioTrack();
return true;
}
else {
int a = aPid2;
aPid2 = aPid1;
aPid1 = a;
if (transferringFromDvbApi)
return transferringFromDvbApi->ToggleAudioTrack();
else {
if (transferBuffer)
transferBuffer->SetAudioPid(aPid1);
return SetPids(transferBuffer != NULL);
}
}
return false;
}
void cDvbApi::ToggleMute(void)
{
int OldVolume = volume;
mute = !mute;
SetVolume(0, mute);
volume = OldVolume;
}
void cDvbApi::SetVolume(int Volume, bool Absolute)
{
if (fd_audio >= 0) {
volume = min(max(Absolute ? Volume : volume + Volume, 0), MAXVOLUME);
audioMixer_t am;
am.volume_left = am.volume_right = volume;
CHECK(ioctl(fd_audio, AUDIO_SET_MIXER, &am));
}
}
void cDvbApi::SetAudioCommand(const char *Command)
{
delete audioCommand;
audioCommand = strdup(Command);
}
// --- cEITScanner -----------------------------------------------------------
cEITScanner::cEITScanner(void)
{
lastScan = lastActivity = time(NULL);
currentChannel = 0;
lastChannel = 0;
numTransponders = 0;
transponders = NULL;
}
cEITScanner::~cEITScanner()
{
delete transponders;
}
bool cEITScanner::TransponderScanned(cChannel *Channel)
{
for (int i = 0; i < numTransponders; i++) {
if (transponders[i] == Channel->frequency)
return true;
}
transponders = (int *)realloc(transponders, ++numTransponders * sizeof(int));
transponders[numTransponders - 1] = Channel->frequency;
return false;
}
void cEITScanner::Activity(void)
{
if (currentChannel) {
Channels.SwitchTo(currentChannel);
currentChannel = 0;
}
lastActivity = time(NULL);
}
void cEITScanner::Process(void)
{
if (Setup.EPGScanTimeout && Channels.MaxNumber() > 1) {
time_t now = time(NULL);
if (now - lastScan > ScanTimeout && now - lastActivity > ActivityTimeout) {
for (int i = 0; i < MAXDVBAPI; i++) {
cDvbApi *DvbApi = cDvbApi::GetDvbApi(i + 1, MAXPRIORITY);
if (DvbApi) {
if (DvbApi != cDvbApi::PrimaryDvbApi || (cDvbApi::NumDvbApis == 1 && Setup.EPGScanTimeout && now - lastActivity > Setup.EPGScanTimeout * 3600)) {
if (!(DvbApi->Recording() || DvbApi->Replaying() || DvbApi->Transferring())) {
int oldCh = lastChannel;
int ch = oldCh + 1;
while (ch != oldCh) {
if (ch > Channels.MaxNumber()) {
ch = 1;
numTransponders = 0;
}
cChannel *Channel = Channels.GetByNumber(ch);
if (Channel && Channel->pnr && !TransponderScanned(Channel)) {
if (DvbApi == cDvbApi::PrimaryDvbApi && !currentChannel)
currentChannel = DvbApi->Channel();
Channel->Switch(DvbApi, false);
lastChannel = ch;
break;
}
ch++;
}
}
}
}
}
lastScan = time(NULL);
}
}
}
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