Merge from branches/mdctexp - faster ifft+imdct in codec lib

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24712 a1c6a512-1295-4272-9138-f99709370657

6 files changed, 18 insertions, 8 deletions

diff --git a/apps/codecs/libtremor/block.c b/apps/codecs/libtremor/block.c
index fe736c8..b4ca8f3 100644
--- a/apps/codecs/libtremor/block.c
+++ b/apps/codecs/libtremor/block.c
@@ -25,6 +25,7 @@
 #include "window.h"
 #include "registry.h"
 #include "misc.h"
+//#include <codecs/lib/codeclib.h>
 
 static int ilog(unsigned int v){
   int ret=0;
@@ -239,6 +240,7 @@ static int _vds_init(vorbis_dsp_state *v,vorbis_info *vi){
     b->mode[i]=_mapping_P[maptype]->look(v,ci->mode_param[i],
                                          ci->map_param[mapnum]);
   }
+
   return(0);
 }
 
diff --git a/apps/codecs/libtremor/codec_internal.h b/apps/codecs/libtremor/codec_internal.h
index 3ca7f54..3cbd7cd 100644
--- a/apps/codecs/libtremor/codec_internal.h
+++ b/apps/codecs/libtremor/codec_internal.h
@@ -60,7 +60,8 @@ typedef struct codec_setup_info {
   /* Vorbis supports only short and long blocks, but allows the
      encoder to choose the sizes */
 
-  long blocksizes[2];
+  int blocksizes_nbits[2];
+  long blocksizes[2]; /* = 1<<nbits */
 
   /* modes are the primary means of supporting on-the-fly different
      blocksizes, different channel mappings (LR or M/A),
diff --git a/apps/codecs/libtremor/info.c b/apps/codecs/libtremor/info.c
index 4273f97..afa9497 100644
--- a/apps/codecs/libtremor/info.c
+++ b/apps/codecs/libtremor/info.c
@@ -120,8 +120,10 @@ static int _vorbis_unpack_info(vorbis_info *vi,oggpack_buffer *opb){
   vi->bitrate_nominal=oggpack_read(opb,32);
   vi->bitrate_lower=oggpack_read(opb,32);
 
-  ci->blocksizes[0]=1<<oggpack_read(opb,4);
-  ci->blocksizes[1]=1<<oggpack_read(opb,4);
+  ci->blocksizes_nbits[0]=oggpack_read(opb,4);
+  ci->blocksizes_nbits[1]=oggpack_read(opb,4);
+  ci->blocksizes[0]=1<<(ci->blocksizes_nbits[0]);
+  ci->blocksizes[1]=1<<(ci->blocksizes_nbits[1]);
   
   if(vi->rate<1)goto err_out;
   if(vi->channels<1)goto err_out;
diff --git a/apps/codecs/libtremor/ivorbiscodec.h b/apps/codecs/libtremor/ivorbiscodec.h
index c2836ad..f17c57a 100644
--- a/apps/codecs/libtremor/ivorbiscodec.h
+++ b/apps/codecs/libtremor/ivorbiscodec.h
@@ -24,6 +24,7 @@ extern "C"
 #endif /* __cplusplus */
 
 #include "ogg.h"
+//#include <codecs/lib/codeclib.h>
 
 typedef struct vorbis_info{
   int version;
@@ -105,7 +106,6 @@ typedef struct vorbis_block{
   long                localalloc;
   long                totaluse;
   struct alloc_chain *reap;
-
 } vorbis_block;
 
 /* vorbis_block is a single block of data to be processed as part of
diff --git a/apps/codecs/libtremor/mapping0.c b/apps/codecs/libtremor/mapping0.c
index ecee6db..bd0e032 100644
--- a/apps/codecs/libtremor/mapping0.c
+++ b/apps/codecs/libtremor/mapping0.c
@@ -27,8 +27,7 @@
 #include "window.h"
 #include "registry.h"
 #include "misc.h"
-
-
+#include <codecs/lib/codeclib.h>
 
 /* simplistic, wasteful way of doing this (unique lookup for each
    mode/submapping); there should be a central repository for
@@ -291,7 +290,10 @@ static int mapping0_inverse(vorbis_block *vb,vorbis_look_mapping *l){
       /* compute and apply spectral envelope */
       look->floor_func[submap]->
         inverse2(vb,look->floor_look[submap],floormemo[i],pcm);
-      mdct_backward(n, (int32_t*) pcm, (int32_t*) pcm);
+        
+      ff_imdct_calc(ci->blocksizes_nbits[vb->W],
+                    (int32_t*)pcm,
+                    (int32_t*)pcm);
       /* window the data */
       _vorbis_apply_window(pcm,b->window,ci->blocksizes,vb->lW,vb->W,vb->nW);
     }
diff --git a/apps/codecs/libtremor/synthesis.c b/apps/codecs/libtremor/synthesis.c
index a882a6d..464c777 100644
--- a/apps/codecs/libtremor/synthesis.c
+++ b/apps/codecs/libtremor/synthesis.c
@@ -26,6 +26,7 @@
 
 
 static ogg_int32_t *ipcm_vect[CHANNELS] IBSS_ATTR;
+int32_t staticbuffer[16384];
 
 int vorbis_synthesis(vorbis_block *vb,ogg_packet *op,int decodep)
     ICODE_ATTR_TREMOR_NOT_MDCT;
@@ -67,7 +68,8 @@ int vorbis_synthesis(vorbis_block *vb,ogg_packet *op,int decodep){
   vb->sequence=op->packetno-3; /* first block is third packet */
   vb->eofflag=op->e_o_s;
 
-  if(decodep && vi->channels<=CHANNELS){
+  if(decodep && vi->channels<=CHANNELS)
+  {
     vb->pcm = ipcm_vect;
 
     /* set pcm end point */
@@ -81,6 +83,7 @@ int vorbis_synthesis(vorbis_block *vb,ogg_packet *op,int decodep){
          by simply flipping pointers */
       for(i=0; i<vi->channels; i++)
         vb->pcm[i] = &vd->first_pcm[i*ci->blocksizes[1]];
+        
     }
     vd->reset_pcmb = false;