1 files changed, 149 insertions, 0 deletions
diff --git a/recorder.c b/recorder.c
new file mode 100644
index 00000000..3a0941bb
--- /dev/null
+++ b/recorder.c
@@ -0,0 +1,149 @@
+/*
+ * recorder.h: The actual DVB recorder
+ *
+ * See the main source file 'vdr.c' for copyright information and
+ * how to reach the author.
+ *
+ * $Id: recorder.c 1.1 2002/06/16 10:03:25 kls Exp $
+ */
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <unistd.h>
+#include "recorder.h"
+
+// The size of the array used to buffer video data:
+// (must be larger than MINVIDEODATA - see remux.h)
+#define VIDEOBUFSIZE  MEGABYTE(1)
+
+#define MINFREEDISKSPACE    (512) // MB
+#define DISKCHECKINTERVAL   100 // seconds
+
+cRecorder::cRecorder(const char *FileName, int Ca, int Priority, int VPid, int APid1, int APid2, int DPid1, int DPid2)
+:cReceiver(Ca, Priority, 5, VPid, APid1, APid2, DPid1, DPid2)
+{
+  ringBuffer = NULL;
+  remux = NULL;
+  fileName = NULL;
+  index = NULL;
+  pictureType = NO_PICTURE;
+  fileSize = 0;
+  active = false;
+  lastDiskSpaceCheck = time(NULL);
+  isyslog("record %s", FileName);
+
+  // Create directories if necessary:
+
+  if (!MakeDirs(FileName, true))
+     return;
+
+  // Make sure the disk is up and running:
+
+  SpinUpDisk(FileName);
+
+  ringBuffer = new cRingBufferLinear(VIDEOBUFSIZE, true);
+  remux = new cRemux(VPid, APid1, APid2, DPid1, DPid2, true);
+  fileName = new cFileName(FileName, true);
+  recordFile = fileName->Open();
+  if (recordFile < 0)
+     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
+}
+
+cRecorder::~cRecorder()
+{
+  Detach();
+  delete index;
+  delete fileName;
+  delete remux;
+  delete ringBuffer;
+}
+
+void cRecorder::Activate(bool On)
+{
+  if (On) {
+     if (recordFile >= 0)
+        Start();
+     }
+  else if (active) {
+     active = false;
+     Cancel(3);
+     }
+}
+
+bool cRecorder::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 cRecorder::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 cRecorder::Receive(uchar *Data, int Length)
+{
+  int p = ringBuffer->Put(Data, Length);
+  if (p != Length && active)
+     esyslog("ERROR: ring buffer overflow (%d bytes dropped)", Length - p);
+}
+
+void cRecorder::Action(void)
+{
+  dsyslog("recording thread started (pid=%d)", getpid());
+
+  uchar b[MINVIDEODATA];
+  int r = 0;
+  active = true;
+  while (active) {
+        int g = ringBuffer->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) {
+              //XXX+ active??? see old version (Busy)
+              if (!active && 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());
+                    break;
+                    }
+                 fileSize += Result;
+                 }
+              else
+                 break;
+              }
+           if (Count > 0) {
+              r -= Count;
+              memmove(b, b + Count, r);
+              }
+           }
+        else
+           usleep(1); // this keeps the CPU load low
+        }
+
+  dsyslog("recording thread ended (pid=%d)", getpid());
+}