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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.
*
* $Id: dvbapi.c 1.180 2002/05/20 10:58:33 kls Exp $
*/
#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>
#include "config.h"
#include "recording.h"
#include "remux.h"
#include "ringbuffer.h"
#include "status.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
// The default priority for non-primary DVB cards:
#define DEFAULTPRIORITY -2
#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;
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 = NULL;
size = 0;
last = -1;
index = NULL;
if (FileName) {
fileName = new char[strlen(FileName) + strlen(INDEXFILESUFFIX) + 1];
if (fileName) {
strcpy(fileName, FileName);
char *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("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("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("ERROR: can't allocate %d bytes for index '%s'", size * sizeof(tIndex), fileName);
}
}
else
LOG_ERROR;
}
else if (!Record)
isyslog("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("ERROR: padding index file with %d '0' bytes", delta);
while (delta--)
writechar(f, 0);
}
}
else
LOG_ERROR_STR(fileName);
}
}
else
esyslog("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("ERROR: can't read from index");
delete index;
index = NULL;
close(f);
f = -1;
break;
}
last = newLast;
}
else
LOG_ERROR_STR(fileName);
}
else
esyslog("ERROR: can't realloc() index");
}
}
else
LOG_ERROR_STR(fileName);
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)) < 0) {
LOG_ERROR_STR(fileName);
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) {
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("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("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("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("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("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("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("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("input thread started (pid=%d)", getpid());
uchar b[MINVIDEODATA];
time_t t = time(NULL);
recording = true;
for (;;) {
if (cFile::FileReady(videoDev, 100)) {
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;
if (r > 0)
usleep(1); // this keeps the CPU load low
}
t = time(NULL);
}
else if (r < 0) {
if (FATALERRNO) {
if (errno == EBUFFEROVERFLOW) // this error code is not defined in the library
esyslog("ERROR (%s,%d): DVB driver buffer overflow", __FILE__, __LINE__);
else {
LOG_ERROR;
break;
}
}
}
}
if (time(NULL) - t > MAXBROKENTIMEOUT) {
esyslog("ERROR: video data stream broken");
cThread::EmergencyExit(true);
t = time(NULL);
}
if (!recording)
break;
}
dsyslog("input thread ended (pid=%d)", getpid());
}
void cRecordBuffer::Output(void)
{
dsyslog("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);
if (safe_write(recordFile, p, Result) < 0) {
LOG_ERROR_STR(fileName.Name());
recording = false;
return;
}
fileSize += Result;
}
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("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("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;
}
cPlayBuffer::~cPlayBuffer()
{
}
void cPlayBuffer::PlayExternalDolby(const uchar *b, int MaxLength)
{
if (cDvbApi::AudioCommand()) {
if (!dolbyDev && !dolbyDev.Open(cDvbApi::AudioCommand(), "w")) {
esyslog("ERROR: can't open pipe to audio command '%s'", cDvbApi::AudioCommand());
return;
}
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("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) {
if (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("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("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("input thread started (pid=%d)", getpid());
readIndex = Resume();
if (readIndex >= 0)
isyslog("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("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)
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("ERROR: unexpected packet id %02X", c);
l = 0;
}
if (l)
i += l - 1; // the loop increments, too!
}
/*XXX
else
esyslog("ERROR: broken packet header");
XXX*/
}
}
}
void cReplayBuffer::DisplayFrame(uchar *b, int Length)
{
StripAudioPackets(b, Length);
CHECK(ioctl(audioDev, AUDIO_SET_AV_SYNC, false));
CHECK(ioctl(audioDev, AUDIO_SET_MUTE, true));
/* Using the VIDEO_STILLPICTURE ioctl call would be the
correct way to display a still frame, but unfortunately this
doesn't work with frames from VDR. So let's do pretty much the
same here as in DVB/driver/dvb.c's play_iframe() - I have absolutely
no idea why it works this way, but doesn't work with VIDEO_STILLPICTURE.
If anybody ever finds out what could be changed so that VIDEO_STILLPICTURE
could be used, please let me know!
kls 2002-03-23
*/
//#define VIDEO_STILLPICTURE_WORKS_WITH_VDR_FRAMES
#ifdef VIDEO_STILLPICTURE_WORKS_WITH_VDR_FRAMES
videoDisplayStillPicture sp = { (char *)b, Length };
CHECK(ioctl(videoDev, VIDEO_STILLPICTURE, &sp));
#else
#define MIN_IFRAME 400000
for (int i = MIN_IFRAME / Length + 1; i > 0; i--) {
safe_write(videoDev, b, Length);
usleep(1); // allows the buffer to be displayed in case the progress display is active
}
#endif
}
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;
}
// --- 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("input thread started (pid=%d)", getpid());
uchar b[MINVIDEODATA];
int n = 0;
while (Busy()) {
if (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("ERROR (%s,%d): DVB driver buffer overflow", __FILE__, __LINE__);
else {
LOG_ERROR;
break;
}
}
}
}
}
dsyslog("input thread ended (pid=%d)", getpid());
}
void cTransferBuffer::Output(void)
{
dsyslog("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() && cFile::FileReadyForWriting(toDevice, 100)) {
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("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("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("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) {
int len = ReadFrame(fromFile, buffer, Length, sizeof(buffer));
if (len < 0) {
error = "ReadFrame";
break;
}
if (len != Length) {
CurrentFileNumber = 0; // this re-syncs in case the frame was larger than the buffer
Length = len;
}
}
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) < 0) {
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("no editing marks found!");
dsyslog("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)) {
// XXX this can be removed once RenameVideoFile() follows symlinks (see videodir.c)
// remove a possible deleted recording with the same name to avoid symlink mixups:
char *s = strdup(evn);
char *e = strrchr(s, '.');
if (e) {
if (strcmp(e, ".rec") == 0) {
strcpy(e, ".del");
RemoveVideoFile(s);
}
}
delete s;
// XXX
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("editing process has been interrupted");
if (Error)
esyslog("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 = -1;
priority = DEFAULTPRIORITY;
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));
FrontendInfo feinfo;
CHECK(ioctl(fd_frontend, FE_GET_INFO, &feinfo));
frontendType = feinfo.type;
}
else
esyslog("ERROR: can't open video device %d", n);
currentChannel = 1;
mute = false;
volume = Setup.CurrentVolume;
}
cDvbApi::~cDvbApi()
{
delete siProcessor;
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...
}
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("setting primary DVB to %d", n + 1);
PrimaryDvbApi = dvbApi[n];
return true;
}
esyslog("invalid DVB interface: %d", n + 1);
return false;
}
int cDvbApi::CanShift(int Ca, int Priority, int UsedCards)
{
// Test whether a recording on this DVB device can be shifted to another one
// in order to perform a new recording with the given Ca and Priority on this device:
int ShiftLevel = -1; // default means this device can't be shifted
if (UsedCards & (1 << CardIndex()) != 0)
return ShiftLevel; // otherwise we would get into a loop
if (Recording()) {
if (ProvidesCa(Ca) // this device provides the requested Ca
&& (Ca != this->Ca() // the requested Ca is different from the one currently used...
|| Priority > this->Priority())) { // ...or the request comes from a higher priority
cDvbApi *d = NULL;
int Provides[MAXDVBAPI];
UsedCards |= (1 << CardIndex());
for (int i = 0; i < NumDvbApis; i++) {
if ((Provides[i] = dvbApi[i]->ProvidesCa(this->Ca())) != 0) { // this device is basicly able to do the job
if (dvbApi[i] != this) { // it is not _this_ device
int sl = dvbApi[i]->CanShift(this->Ca(), Priority, UsedCards); // this is the original Priority!
if (sl >= 0 && (ShiftLevel < 0 || sl < ShiftLevel)) {
d = dvbApi[i];
ShiftLevel = sl;
}
}
}
}
if (ShiftLevel >= 0)
ShiftLevel++; // adds the device's own shift
}
}
else if (Priority > this->Priority())
ShiftLevel = 0; // no shifting necessary, this device can do the job
return ShiftLevel;
}
cDvbApi *cDvbApi::GetDvbApi(int Ca, int Priority)
{
cDvbApi *d = NULL;
int Provides[MAXDVBAPI];
// Check which devices provide Ca:
for (int i = 0; i < NumDvbApis; i++) {
if ((Provides[i] = dvbApi[i]->ProvidesCa(Ca)) != 0) { // this device is basicly able to do the job
if (Priority > dvbApi[i]->Priority() // Priority is high enough to use this device
&& (!d // we don't have a device yet, or...
|| dvbApi[i]->Priority() < d->Priority() // ...this one has an even lower Priority
|| (dvbApi[i]->Priority() == d->Priority() // ...same Priority...
&& Provides[i] < Provides[d->CardIndex()]))) // ...but this one provides fewer Ca values
d = dvbApi[i];
}
}
if (!d && Ca > MAXDVBAPI) {
// We didn't find one the easy way, so now we have to try harder:
int ShiftLevel = -1;
for (int i = 0; i < NumDvbApis; i++) {
if (Provides[i]) { // this device is basicly able to do the job, but for some reason we didn't get it above
int sl = dvbApi[i]->CanShift(Ca, Priority); // asks this device to shift its job to another device
if (sl >= 0 && (ShiftLevel < 0 || sl < ShiftLevel)) {
d = dvbApi[i]; // found one that can be shifted with the fewest number of subsequent shifts
ShiftLevel = sl;
}
}
}
}
return d;
}
void cDvbApi::SetCaCaps(void)
{
for (int d = 0; d < NumDvbApis; d++) {
for (int i = 0; i < MAXCACAPS; i++)
dvbApi[d]->caCaps[i] = Setup.CaCaps[dvbApi[d]->CardIndex()][i];
}
}
int cDvbApi::ProvidesCa(int Ca)
{
if (Ca == CardIndex() + 1)
return 1; // exactly _this_ card was requested
if (Ca && Ca <= MAXDVBAPI)
return 0; // a specific card was requested, but not _this_ one
int result = Ca ? 0 : 1; // by default every card can provide FTA
int others = Ca ? 1 : 0;
for (int i = 0; i < MAXCACAPS; i++) {
if (caCaps[i]) {
if (caCaps[i] == Ca)
result = 1;
else
others++;
}
}
return result ? result + others : 0;
}
bool cDvbApi::Probe(const char *FileName)
{
if (access(FileName, F_OK) == 0) {
dsyslog("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::Initialize(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("found %d video device%s", NumDvbApis, NumDvbApis > 1 ? "s" : "");
else
esyslog("ERROR: no video device found, giving up!");
SetCaCaps();
return NumDvbApis > 0;
}
void cDvbApi::Shutdown(void)
{
for (int i = 0; i < NumDvbApis; i++) {
delete dvbApi[i];
dvbApi[i] = NULL;
}
PrimaryDvbApi = 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("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;
}
int cDvbApi::Priority(void)
{
return (this == PrimaryDvbApi && !Recording()) ? Setup.PrimaryLimit - 1 : priority;
}
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));
if (Pid != 0x1FFF) {
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) {
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) && (!Setup.RecordDolbyDigital ||
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)
{
StopTransfer();
StopReplay();
cStatusMonitor::MsgChannelSwitch(this, 0);
// 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));
}
// Stop setting system time:
if (siProcessor)
siProcessor->SetCurrentTransponder(0);
// 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 && !ProvidesCa(Ca));
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("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("ERROR: channel %d not sync'ed on DVB card %d!", ChannelNumber, CardIndex() + 1);
if (this == PrimaryDvbApi)
cThread::RaisePanic();
return scrFailed;
}
}
else
esyslog("ERROR %d in frontend get event (channel %d, card %d)", res, ChannelNumber, CardIndex() + 1);
}
else
esyslog("ERROR: timeout while tuning");
// PID settings:
if (!SetPids(false)) {
esyslog("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));
}
// Start setting system time:
if (Result == scrOk && siProcessor)
siProcessor->SetCurrentTransponder(Frequency);
cStatusMonitor::MsgChannelSwitch(this, ChannelNumber);
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("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("ERROR: StartRecord: file name is (null)");
return false;
}
isyslog("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("ERROR: can't allocate recording buffer");
return false;
}
void cDvbApi::StopRecord(void)
{
if (recordBuffer) {
delete recordBuffer;
recordBuffer = NULL;
ca = -1;
priority = DEFAULTPRIORITY;
}
}
bool cDvbApi::StartReplay(const char *FileName)
{
if (Recording()) {
esyslog("ERROR: StartReplay() called while recording - ignored!");
return false;
}
StopTransfer();
StopReplay();
if (fd_video >= 0 && fd_audio >= 0) {
// Check FileName:
if (!FileName) {
esyslog("ERROR: StartReplay: file name is (null)");
return false;
}
isyslog("replay %s", FileName);
// Create replay buffer:
replayBuffer = new cReplayBuffer(this, fd_video, fd_audio, FileName);
if (replayBuffer)
return true;
else
esyslog("ERROR: can't allocate replaying buffer");
}
return false;
}
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;
}
bool cDvbApi::ToggleMute(void)
{
int OldVolume = volume;
mute = !mute;
SetVolume(0, mute);
volume = OldVolume;
return mute;
}
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));
cStatusMonitor::MsgSetVolume(volume, Absolute);
if (volume > 0)
mute = false;
}
}
void cDvbApi::SetAudioCommand(const char *Command)
{
delete audioCommand;
audioCommand = strdup(Command);
}
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