Implemented audio plugin interface

1 files changed, 88 insertions, 1 deletions

diff --git a/audio.c b/audio.c
index 5e7bb73b..c958256d 100644
--- a/audio.c
+++ b/audio.c
@@ -4,8 +4,95 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: audio.c 1.1 2002/06/10 16:30:00 kls Exp $
+ * $Id: audio.c 1.2 2002/11/03 11:53:34 kls Exp $
  */
 
 #include "audio.h"
+#include "stdlib.h"
 
+// --- cAudio ----------------------------------------------------------------
+
+cAudio::cAudio(void)
+{
+  Audios.Add(this);
+}
+
+cAudio::~cAudio()
+{
+}
+
+// --- cAudios ---------------------------------------------------------------
+
+cAudios Audios;
+
+void cAudios::PlayAudio(const uchar *Data, int Length)
+{
+  for (cAudio *audio = First(); audio; audio = Next(audio))
+      audio->Play(Data, Length);
+}
+
+void cAudios::MuteAudio(bool On)
+{
+  for (cAudio *audio = First(); audio; audio = Next(audio))
+      audio->Mute(On);
+}
+
+void cAudios::ClearAudio(void)
+{
+  for (cAudio *audio = First(); audio; audio = Next(audio))
+      audio->Clear();
+}
+
+// --- cExternalAudio --------------------------------------------------------
+
+cExternalAudio::cExternalAudio(const char *Command)
+{
+  command = strdup(Command);
+  mute = false;
+}
+
+cExternalAudio::~cExternalAudio()
+{
+  free(command);
+}
+
+void cExternalAudio::Play(const uchar *Data, int Length)
+{
+  if (command && !mute) {
+     if (pipe || pipe.Open(command, "w")) {
+        if (Data[0] == 0x00 && Data[1] == 0x00 && Data[2] == 0x01) {
+           if (Data[3] == 0xBD) { // dolby
+              //XXX??? int written = Data[8] + (skipAC3bytes ? 13 : 9); // skips the PES header
+              int written = Data[8] + 9; // skips the PES header
+              Length -= written;
+              while (Length > 0) {
+                    int w = fwrite(Data + written, 1, Length, pipe);
+                    if (w < 0) {
+                       LOG_ERROR;
+                       break;
+                       }
+                    Length -= w;
+                    written += w;
+                    }
+              }
+           }
+        }
+     else {
+        esyslog("ERROR: can't open pipe to audio command '%s'", command);
+        free(command);
+        command = NULL;
+        }
+     }
+}
+
+void cExternalAudio::Mute(bool On)
+{
+  mute = On;
+  if (mute)
+     Clear();
+}
+
+void cExternalAudio::Clear(void)
+{
+  pipe.Close();
+}