From 26f488caef0e88e1995b6141e17e3595a6cf34dc Mon Sep 17 00:00:00 2001
From: deva <deva>
Date: Tue, 5 Jul 2005 23:15:16 +0000
Subject: *** empty log message ***

---
 src/liblame_wrapper.cc | 78 +++++++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 67 insertions(+), 11 deletions(-)

(limited to 'src/liblame_wrapper.cc')

diff --git a/src/liblame_wrapper.cc b/src/liblame_wrapper.cc
index 751c41b..7af9b68 100644
--- a/src/liblame_wrapper.cc
+++ b/src/liblame_wrapper.cc
@@ -31,6 +31,9 @@
 
 /*
  * $Log$
+ * Revision 1.2  2005/07/05 23:15:16  deva
+ * *** empty log message ***
+ *
  * Revision 1.1  2005/07/02 11:39:51  deva
  * Added some audiocode.
  * Moved libfame code out of mov_encoder
@@ -45,25 +48,45 @@ LibLAMEWrapper::LibLAMEWrapper(Info *i)
   info = i;
 
   // Init library.
-  lamegf = lame_init();
-  if(!lamegf) {
+  if( (gfp = lame_init()) == NULL) {
     info->error("LAME initialization failed (due to malloc failure!)");
+    return;
   }
 
-  lame_init_params(lamegf);
+	lame_set_in_samplerate(gfp, SAMPLE_RATE);
+	lame_set_out_samplerate(gfp, SAMPLE_RATE);
+	lame_set_num_channels(gfp, CHANNELS);
+	// lame 3.91 dies on quality != 5
+	lame_set_quality(gfp, 5);
+	// lame 3.91 doesn't work in mono
+	lame_set_mode(gfp, STEREO);
+	lame_set_brate(gfp, 192);
+  lame_set_strict_ISO(gfp, 1);
+
+	if (lame_init_params(gfp) < 0) {
+    info->error("LAME parameter initialization failed.");
+    return;
+  }
 
-  decoder = NULL;
+  lame_init_bitstream(gfp);
 
   audio_buffer[0] = new int16_t[AUDIO_BUFFER_SIZE];
   audio_buffer[1] = new int16_t[AUDIO_BUFFER_SIZE];
+  audio_buffer[2] = new int16_t[AUDIO_BUFFER_SIZE];
+  audio_buffer[3] = new int16_t[AUDIO_BUFFER_SIZE];
 
+  // And now for the dv decoder!
+  decoder = NULL;
 }
 
 LibLAMEWrapper::~LibLAMEWrapper()
 {
+  lame_close(gfp);
+
   delete audio_buffer[0];
   delete audio_buffer[1];
-
+  delete audio_buffer[2];
+  delete audio_buffer[3];
 }
 
 Frame *LibLAMEWrapper::encode(Frame *dvframe)
@@ -90,12 +113,17 @@ Frame *LibLAMEWrapper::encode(Frame *dvframe)
    */
   //  int n, i;
   //  int16_t* s = ( int16_t * ) sound;
+
   dv_decode_full_audio( decoder, dvframe->data, audio_buffer );
   /*
-  for ( n = 0; n < SAMPLES; ++n )
-    for ( i = 0; i < CHANNELS; i++ )
-      *s++ = audio_buffer[ i ][ n ];
-      */
+  memset(audio_buffer[0], 0, sizeof(audio_buffer[0]));
+  memset(audio_buffer[1], 0, sizeof(audio_buffer[1]));
+  */
+  /*
+    for ( n = 0; n < SAMPLES; ++n )
+      for ( i = 0; i < CHANNELS; i++ )
+        *s++ = audio_buffer[ i ][ n ];
+    */
 
 /*
  * input pcm data, output (maybe) mp3 frames.
@@ -104,6 +132,9 @@ Frame *LibLAMEWrapper::encode(Frame *dvframe)
  * The required mp3buf_size can be computed from num_samples, 
  * samplerate and encoding rate, but here is a worst case estimate:
  *
+ * return code     number of bytes output in mp3buffer.  can be 0 
+ *                 if return code = -1:  mp3buffer was too small
+ *
  * mp3buf_size in bytes = 1.25*num_samples + 7200
  *
  * I think a tighter bound could be:  (mt, March 2000)
@@ -127,12 +158,12 @@ Frame *LibLAMEWrapper::encode(Frame *dvframe)
   Frame* audio_frame = new Frame(NULL, (int)(1.25 * SAMPLES + 7200));
 
   const short int     *buffer_l = audio_buffer[0];   // PCM data for left channel
-  const short int     *buffer_r = audio_buffer[0];   // PCM data for right channel
+  const short int     *buffer_r = audio_buffer[1];   // PCM data for right channel
   const int           nsamples = SAMPLES;      // number of samples per channel
   unsigned char*      mp3buf = audio_frame->data;        // pointer to encoded MP3 stream
   const int           mp3buf_size = audio_frame->size;   // number of valid octets in this
 
-  int val = lame_encode_buffer(lamegf, buffer_l, buffer_r, nsamples, mp3buf, mp3buf_size);
+  int val = lame_encode_buffer(gfp, buffer_l, buffer_r, nsamples, mp3buf, mp3buf_size);
 
   if(val < 0) {
     switch(val) {
@@ -154,5 +185,30 @@ Frame *LibLAMEWrapper::encode(Frame *dvframe)
     }
   }
 
+  /*
+  val = lame_encode_flush(gfp, mp3buf, val);
+
+  if(val < 0) {
+    switch(val) {
+    case -1:  // mp3buf was too small
+      info->error("Lame encoding failed (during flush), mp3buf was too small.");
+      break;
+    case -2:  // malloc() problem
+      info->error("Lame encoding failed (during flush), due to malloc() problem.");
+      break;
+    case -3:  // lame_init_params() not called
+      info->error("Lame encoding failed (during flush), lame_init_params() not called.");
+      break;
+    case -4:  // psycho acoustic problems 
+      info->error("Lame encoding failed (during flush), due to psycho acoustic problems.");
+      break;
+    default:
+      info->error("Lame encoding failed (during flush), due to unknown error.");
+      break;
+    }
+  }
+  */
+  audio_frame->size = val;
+
   return audio_frame;
 }
-- 
cgit v1.2.3