Forgot one

svn path=/branches/branch_beta3/vorbis/; revision=959

1 files changed, 154 insertions, 0 deletions

diff --git a/lib/vorbisenc.c b/lib/vorbisenc.c
new file mode 100644
index 00000000..451ce09b
--- /dev/null
+++ b/lib/vorbisenc.c
@@ -0,0 +1,154 @@
+/********************************************************************
+ *                                                                  *
+ * THIS FILE IS PART OF THE Ogg Vorbis SOFTWARE CODEC SOURCE CODE.  *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS SOURCE IS GOVERNED BY *
+ * THE GNU LESSER/LIBRARY PUBLIC LICENSE, WHICH IS INCLUDED WITH    *
+ * THIS SOURCE. PLEASE READ THESE TERMS DISTRIBUTING.               *
+ *                                                                  *
+ * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2000             *
+ * by Monty <monty@xiph.org> and The XIPHOPHORUS Company            *
+ * http://www.xiph.org/                                             *
+ *                                                                  *
+ ********************************************************************
+
+ function: simple programmatic interface for encoder mode setup
+ last mod: $Id: vorbisenc.c,v 1.1.2.1 2000/11/03 10:34:04 xiphmont Exp $
+
+ ********************************************************************/
+
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+
+#include "vorbis/codec.h"
+#include "vorbis/vorbisenc.h"
+
+#include "codec_internal.h"
+#include "registry.h"
+#include "modes/modes.h"
+
+#include "os.h"
+#include "misc.h"
+
+
+/* deepcopy all but the codebooks; in this usage, they're static
+   (don't copy as they could be big) */
+static void codec_setup_partialcopy(codec_setup_info *ci,
+				 codec_setup_info *cs){
+  int i;
+
+  memcpy(ci,cs,sizeof(codec_setup_info)); /* to get the flat numbers */
+
+  /* codebooks */
+  for(i=0;i<ci->books;i++){
+    ci->book_param[i]=cs->book_param[i];
+  }
+
+  /* time backend settings */
+  for(i=0;i<ci->times;i++){
+    ci->time_param[i]=_time_P[ci->time_type[i]]->
+      copy_info(cs->time_param[i]);
+  }
+
+  /* floor backend settings */
+  for(i=0;i<ci->floors;i++){
+    ci->floor_param[i]=_floor_P[ci->floor_type[i]]->
+      copy_info(cs->floor_param[i]);
+  }
+
+  /* residue backend settings */
+  for(i=0;i<ci->residues;i++){
+    ci->residue_param[i]=_residue_P[ci->residue_type[i]]->
+      copy_info(cs->residue_param[i]);
+  }
+
+  /* map backend settings */
+  for(i=0;i<ci->maps;i++){
+    ci->map_param[i]=_mapping_P[ci->map_type[i]]->
+      copy_info(cs->map_param[i]);
+  }
+  
+  /* mode settings */
+  for(i=0;i<ci->modes;i++){
+    ci->mode_param[i]=calloc(1,sizeof(vorbis_info_mode));
+    ci->mode_param[i]->blockflag=cs->mode_param[i]->blockflag;
+    ci->mode_param[i]->windowtype=cs->mode_param[i]->windowtype;
+    ci->mode_param[i]->transformtype=cs->mode_param[i]->transformtype;
+    ci->mode_param[i]->mapping=cs->mode_param[i]->mapping;
+  }
+
+  /* psy settings */
+  for(i=0;i<ci->psys;i++){
+    ci->psy_param[i]=_vi_psy_copy(cs->psy_param[i]);
+  }
+
+}
+
+/* right now, this just encapsultes the old modes behind the interface
+   we'll be using from here on out.  After beta 3, the new bitrate
+   tracking/modding/tuning engine will lurk inside */
+/* encoders will need to use vorbis_info_init beforehand and call
+   vorbis_info clear when all done */
+
+int vorbis_encode_init(vorbis_info *vi,
+		       long channels,
+		       long rate,
+
+		       long max_bitrate,
+		       long nominal_bitrate,
+		       long min_bitrate){
+
+  long bpch;
+  int i,j;
+  codec_setup_info *ci=vi->codec_setup;
+  codec_setup_info *mode=NULL;
+  if(!ci)return(OV_EFAULT);
+
+  vi->version=0;
+  vi->channels=channels;
+  vi->rate=rate;
+  
+  vi->bitrate_upper=max_bitrate;
+  vi->bitrate_nominal=nominal_bitrate;
+  vi->bitrate_lower=min_bitrate;
+  vi->bitrate_window=2;
+
+  /* copy a mode into our allocated storage */
+  bpch=nominal_bitrate/channels;
+  if(bpch<75000){
+    /* mode A */
+    mode=&info_A;
+  }else if(bpch<90000){
+    /* mode B */
+    mode=&info_B;
+  }else if(bpch<110000){
+    /* mode C */
+    mode=&info_C;
+  }else if(bpch<160000){
+    /* mode D */
+    mode=&info_D;
+  }else{
+    /* mode E */
+    mode=&info_E;
+  }
+
+  /* now we have to deepcopy */
+  codec_setup_partialcopy(ci,mode);
+
+  /* adjust for sample rate */
+  for(i=0;i<ci->floors;i++)
+    ((vorbis_info_floor0 *)(ci->floor_param[i]))->rate=rate;
+
+  /* adjust for channels; all our mappings use submap zero now */
+  /* yeah, OK, calloc did this for us.  But it's a reminder/placeholder */
+  for(i=0;i<ci->maps;i++)
+    for(j=0;j<channels;j++)
+      ((vorbis_info_mapping0 *)ci->map_param[i])->chmuxlist[j]=0;
+
+  return(0);
+}
+
+int vorbis_encode_ctl(vorbis_info *vi,int number,void *arg){
+  return(OV_EIMPL);
+}
+