From f131c8c79dfe9a36a5e332f5c27f5685028ccbc3 Mon Sep 17 00:00:00 2001
From: Klaus Schmidinger <vdr@tvdr.de>
Date: Sat, 10 Nov 2001 13:41:22 +0100
Subject: [PATCH] Added MPEG audio support for DVD

---
 HISTORY  |  1 +
 dvbapi.c | 25 +++----------------------
 dvd.c    | 23 ++++++++++++++++++++++-
 dvd.h    | 11 ++++++++++-
 4 files changed, 36 insertions(+), 24 deletions(-)

diff --git a/HISTORY b/HISTORY
index a1e79e9a..0628970f 100644
--- a/HISTORY
+++ b/HISTORY
@@ -871,3 +871,4 @@ Video Disk Recorder Revision History
 - Changed version numbering scheme.
 - Fixed several channel definitions in 'channels.conf' (thanks to Thilo
   Wunderlich).
+- Added MPEG audio support for DVD (thanks to Andreas Schultz).
diff --git a/dvbapi.c b/dvbapi.c
index f72782b4..12ff9486 100644
--- a/dvbapi.c
+++ b/dvbapi.c
@@ -7,7 +7,7 @@
  * DVD support initially written by Andreas Schultz <aschultz@warp10.net>
  * based on dvdplayer-0.5 by Matjaz Thaler <matjaz.thaler@guest.arnes.si>
  *
- * $Id: dvbapi.c 1.137 2001/11/04 12:05:36 kls Exp $
+ * $Id: dvbapi.c 1.138 2001/11/10 13:35:22 kls Exp $
  */
 
 //#define DVDDEBUG        1
@@ -1348,9 +1348,6 @@ bool cReplayBuffer::NextFile(uchar FileNumber, int FileOffset)
 #define cOUTPACK         5
 #define cOUTFRAMES       6
 
-#define aAC3          0x80
-#define aLPCM         0xA0
-
 // --- cAC3toPCM -------------------------------------------------------------
 
 class cAC3toPCM {
@@ -1574,28 +1571,12 @@ cDVDplayBuffer::~cDVDplayBuffer()
 
 unsigned int cDVDplayBuffer::getAudioStream(unsigned int StreamId)
 {
-  unsigned int trackID;
-
-  if ((cyclestate < cOPENCHAPTER) || (StreamId > 7))
+  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;
-  switch (vts_file->vtsi_mat->vts_audio_attr[track].audio_format) {
-    case 0: // ac3
-            trackID = aAC3;
-            break;
-    case 2: // mpeg1
-    case 3: // mpeg2ext
-    case 4: // lpcm
-    case 6: // dts
-            trackID = aLPCM;
-            break;
-    default: esyslog(LOG_ERR, "ERROR: unknown Audio stream info");
-             return 0;
-    }
-  trackID |= track;
-  return trackID;
+  return dvd->getAudioTrack(track) | track;
 }
 
 void cDVDplayBuffer::ToggleAudioTrack(void)
diff --git a/dvd.c b/dvd.c
index 841e998b..e061b141 100644
--- a/dvd.c
+++ b/dvd.c
@@ -6,7 +6,7 @@
  *
  * Initially written by Andreas Schultz <aschultz@warp10.net>
  *
- * $Id: dvd.c 1.3 2001/08/06 16:07:44 kls Exp $
+ * $Id: dvd.c 1.4 2001/11/10 13:38:50 kls Exp $
  */
 
 #ifdef DVDSUPPORT
@@ -21,6 +21,7 @@
 #include <unistd.h>
 
 #include "dvd.h"
+#include "tools.h"
 
 // --- cDVD ----------------------------------------------------------------------------
 
@@ -145,4 +146,24 @@ dvd_file_t *cDVD::openTitle(int Title, dvd_read_domain_t domain)
   return title;
 }
 
+int cDVD::getAudioTrack(int stream)
+{
+  if (getVTS()) {
+     switch (getVTS()->vtsi_mat->vts_audio_attr[stream].audio_format) {
+       case 0: // ac3
+               return aAC3;
+       case 2: // mpeg1
+       case 3: // mpeg2ext
+               return aMPEG;
+       case 4: // lpcm
+               return aLPCM;
+       case 6: // dts
+               return aDTS;
+       default:
+               esyslog(LOG_ERR, "ERROR: unknown Audio stream info");
+       }
+     }
+  return 0;
+}
+
 #endif //DVDSUPPORT
diff --git a/dvd.h b/dvd.h
index 68fc1d38..5ac14548 100644
--- a/dvd.h
+++ b/dvd.h
@@ -6,7 +6,7 @@
  *
  * Initially written by Andreas Schultz <aschultz@warp10.net>
  *
- * $Id: dvd.h 1.3 2001/08/05 16:00:57 kls Exp $
+ * $Id: dvd.h 1.4 2001/11/10 13:38:25 kls Exp $
  */
 
 #ifndef __DVD_H
@@ -21,6 +21,11 @@
 #include <dvdread/nav_read.h>
 #include <dvdread/nav_print.h>
 
+#define aAC3   0x80
+#define aDTS   0x88
+#define aLPCM  0xA0
+#define aMPEG  0xC0
+
 class cDVD {
 private:
   static cDVD *dvdInstance;
@@ -44,8 +49,12 @@ public:
   bool isValid(void) { return (dvd != NULL); }
   ifo_handle_t *openVMG(void);
   ifo_handle_t *openVTS(int TitleSet);
+  ifo_handle_t *getVTS() { return vts_file; }
   dvd_file_t *openTitle(int Title, dvd_read_domain_t domain);
   static cDVD *getDVD(void);
+  int getAudioNrOfTracks() { return getVTS() ? getVTS()->vtsi_mat->nr_of_vts_audio_streams : 0; }
+  int getAudioLanguage(int stream) { return getVTS() ? getVTS()->vtsi_mat->vts_audio_attr[stream].lang_code : 0; }
+  int getAudioTrack(int stream);
   };
 
 #endif //DVDSUPPORT