functions to

o reset Audio format
o get current payload

(quiz? what comes next?)



git-svn-id: http://svn.berlios.de/svnroot/repos/sems/trunk@819 8eb893ce-cfd4-0310-b710-fb5ebe64c474

core/AmAudio.cpp

@@ -223,6 +223,10 @@ void AmAudioFormat::destroyCodec()
   codec = NULL;
 }
 
+void AmAudioFormat::resetCodec() {
+  codec = NULL;
+  getCodec();
+}
 
 amci_codec_t* AmAudioFormat::getCodec()
 {
@@ -270,6 +274,11 @@ AmAudio::~AmAudio()
 #endif
 }
 
+void AmAudio::setFormat(AmAudioFormat* new_fmt) {
+  fmt.reset(new_fmt);
+  fmt->resetCodec();
+}
+
 void AmAudio::close()
 {
 }
@@ -495,8 +504,6 @@ void DblBuffer::swap()
   active_buf = !active_buf;
 }
 
-
-
 int AmAudioRtpFormat::getCodecId()
 {
   if(!m_currentPayloadP){

core/AmAudio.h

@@ -109,11 +109,11 @@ public:
   int channels;
   /** Sampling rate. */
   int rate;
-  /* frame length in samples (frame based codecs) */
+  /* frame length in ms (frame based codecs) - unused */
   int frame_length;
-  /* frame size in bytes */
+  /* frame size in samples */
   int frame_size;
-  /* encoded frame size in bytes */
+  /* encoded frame size in bytes - unused */
   int frame_encoded_size;
 
   string sdp_format_parameters;
@@ -122,7 +122,9 @@ public:
   virtual ~AmAudioFormat();
 
   /** @return The format's codec pointer. */
-  amci_codec_t*    getCodec();
+  virtual amci_codec_t*    getCodec();
+  void resetCodec();
+
   /** @return Handler returned by the codec's init function.*/
   long             getHCodec();
   long             getHCodecNoInit() { return h_codec; } // do not initialize
@@ -158,7 +160,7 @@ class AmAudioSimpleFormat: public AmAudioFormat
   int codec_id;
 
 protected:
-  int getCodecId() { return codec_id; }
+  virtual int getCodecId() { return codec_id; }
 
 public:
   AmAudioSimpleFormat(int codec_id);
@@ -176,7 +178,7 @@ class AmAudioRtpFormat: public AmAudioFormat
   std::map<int, CodecContainer *> m_codecContainerByPayload;
 
 protected:
-  int getCodecId();
+  virtual int getCodecId();
 
 public:
   /**
@@ -191,6 +193,8 @@ public:
    * changes payload. returns != 0 on error.
    */
   int setCurrentPayload(int payload);
+
+  int getCurrentPayload() { return m_currentPayload; };
 };
 
 /**
@@ -299,6 +303,8 @@ public:
   int  incRecordTime(unsigned int samples);
 
   void setBufferedOutput(unsigned int buffer_size);
+
+  void setFormat(AmAudioFormat* new_fmt);
 };
 
 

core/AmAudioFile.h

@@ -54,20 +54,15 @@ public:
    * @param subtype Subtype for the file format (see amci.h).
    */
   AmAudioFileFormat(const string& name, int subtype = -1);
-  /**
-   * Constructor for file based formats.
-   * All information are taken from the file descriptor.
-   * @param name The file format name (ex. "Wav").
-   * @param fd A file descriptor filled by the a plug-in's open function.
-   */
-  AmAudioFileFormat(const string& name, const amci_file_desc_t* fd);
+
+  virtual ~AmAudioFileFormat()  { }
 
   /** @return Format name. */
   string        getName() { return name; }
   /** @return Format subtype. */
   int           getSubtypeId() { return subtype; }
   /** @return Subtype pointer. */
-  amci_subtype_t*  getSubtype();
+  virtual amci_subtype_t*  getSubtype();
 
   void setSubtypeId(int subtype_id);
 };
@@ -104,7 +99,7 @@ protected:
   int write(unsigned int user_ts, unsigned int size);
 
   /** @return a file format from file name. (ex: '1234.wav') */
-  AmAudioFileFormat* fileName2Fmt(const string& name);
+  virtual AmAudioFileFormat* fileName2Fmt(const string& name);
 
   /** internal function for opening the file */
   int fpopen_int(const string& filename, OpenMode mode, FILE* n_fp);

core/AmRtpAudio.cpp

@@ -157,6 +157,10 @@ int AmRtpAudio::setCurrentPayload(int payload)
   return res;
 }
 
+int AmRtpAudio::getCurrentPayload() {
+  return ((AmAudioRtpFormat *) fmt.get())->getCurrentPayload();
+}
+
 unsigned int AmRtpAudio::conceal_loss(unsigned int ts_diff, unsigned char *buffer)
 {
   int s=0;

core/AmRtpAudio.h

@@ -100,6 +100,7 @@ public:
   bool sendIntReached();
 
   int setCurrentPayload(int payload);
+  int getCurrentPayload();
 
   int receive(unsigned int wallclock_ts);