X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftags%2Fsynfig_0_61_04%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavcodec%2Fra144.c;fp=synfig-core%2Ftags%2Fsynfig_0_61_04%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavcodec%2Fra144.c;h=0000000000000000000000000000000000000000;hb=6fa8f2f38d4b0b35f8539bf94e27ae27015c7689;hp=2d882f7444e3505c4c9156043b48e381c89ee7d7;hpb=47fce282611fbba1044921d22ca887f9b53ad91a;p=synfig.git

diff --git a/synfig-core/tags/synfig_0_61_04/synfig-core/src/modules/mod_libavcodec/libavcodec/ra144.c b/synfig-core/tags/synfig_0_61_04/synfig-core/src/modules/mod_libavcodec/libavcodec/ra144.c
deleted file mode 100644
index 2d882f7..0000000
--- a/synfig-core/tags/synfig_0_61_04/synfig-core/src/modules/mod_libavcodec/libavcodec/ra144.c
+++ /dev/null
@@ -1,513 +0,0 @@
-/*
- * Real Audio 1.0 (14.4K)
- * Copyright (c) 2003 the ffmpeg project
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include "avcodec.h"
-#include "ra144.h"
-
-#define DATABLOCK1	20			/* size of 14.4 input block in bytes */
-#define DATACHUNK1	1440			/* size of 14.4 input chunk in bytes */
-#define AUDIOBLOCK	160			/* size of output block in 16-bit words (320 bytes) */
-#define AUDIOBUFFER	12288			/* size of output buffer in 16-bit words (24576 bytes) */
-/* consts */
-#define NBLOCKS		4				/* number of segments within a block */
-#define BLOCKSIZE	40				/* (quarter) block size in 16-bit words (80 bytes) */
-#define HALFBLOCK	20				/* BLOCKSIZE/2 */
-#define BUFFERSIZE	146				/* for do_output */
-
-
-/* internal globals */
-typedef struct {
-	unsigned int	 resetflag, val, oldval;
-	unsigned int	 unpacked[28];		/* buffer for unpacked input */
-	unsigned int	*iptr;				/* pointer to current input (from unpacked) */
-	unsigned int	 gval;
-	unsigned short	*gsp;
-	unsigned int	 gbuf1[8];
-	unsigned short	 gbuf2[120];
-	signed   short	 output_buffer[40];
-	unsigned int	*decptr;			/* decoder ptr */
-	signed   short	*decsp;
-
-	/* the swapped buffers */
-	unsigned int	 swapb1a[10];
-	unsigned int	 swapb2a[10];
-	unsigned int	 swapb1b[10];
-	unsigned int	 swapb2b[10];
-	unsigned int	*swapbuf1;
-	unsigned int	*swapbuf2;
-	unsigned int	*swapbuf1alt;
-	unsigned int	*swapbuf2alt;
-
-	unsigned int buffer[5];
-	unsigned short int buffer_2[148];
-	unsigned short int buffer_a[40];
-	unsigned short int buffer_b[40];
-	unsigned short int buffer_c[40];
-	unsigned short int buffer_d[40];
-
-	unsigned short int work[50];
-	unsigned short *sptr;
-
-	int buffer1[10];
-	int buffer2[10];
-
-	signed short wavtable1[2304];
-	unsigned short wavtable2[2304];
-} Real144_internal;
-
-static int ra144_decode_init(AVCodecContext * avctx)
-{
-	Real144_internal *glob=avctx->priv_data;
-
-	memset(glob,0,sizeof(Real144_internal));
-	glob->resetflag=1;
-	glob->swapbuf1=glob->swapb1a;
-	glob->swapbuf2=glob->swapb2a;
-	glob->swapbuf1alt=glob->swapb1b;
-	glob->swapbuf2alt=glob->swapb2b;
-
-	memcpy(glob->wavtable1,wavtable1,sizeof(wavtable1));
-	memcpy(glob->wavtable2,wavtable2,sizeof(wavtable2));
-
-	return 0;
-}
-
-static void final(Real144_internal *glob, short *i1, short *i2, void *out, int *statbuf, int len);
-static void add_wav(Real144_internal *glob, int n, int f, int m1, int m2, int m3, short *s1, short *s2, short *s3, short *dest);
-static int irms(short *data, int factor);
-static void rotate_block(short *source, short *target, int offset);
-/* lookup square roots in table */
-static int t_sqrt(unsigned int x)
-{
-  int s=0;
-  while (x>0xfff) { s++; x=x>>2; }
-  return (sqrt_table[x]<<s)<<2;
-}
-
-/* do 'voice' */
-static void do_voice(int *a1, int *a2)
-{
-  int buffer[10];
-  int *b1,*b2;
-  int x,y;
-  int *ptr,*tmp;
-  
-  b1=buffer;
-  b2=a2;
-  
-  for (x=0;x<10;x++) {
-    b1[x]=(*a1)<<4;
-
-    if(x>0) {
-      ptr=b2+x;
-      for (y=0;y<=x-1;y++)
-        b1[y]=(((*a1)*(*(--ptr)))>>12)+b2[y];
-    }
-    tmp=b1;
-    b1=b2;
-    b2=tmp;
-    a1++;
-  }  
-  ptr=a2+10;
-  while (ptr>a2) (*a2++)>>=4;
-}
-
-
-/* do quarter-block output */
-static void do_output_subblock(Real144_internal *glob, int x)
-{
-  int a,b,c,d,e,f,g;
-
-  if (x==1) memset(glob->buffer,0,20);
-  if ((*glob->iptr)==0) a=0;
-  else a=(*glob->iptr)+HALFBLOCK-1;
-  glob->iptr++;
-  b=*(glob->iptr++);
-  c=*(glob->iptr++);
-  d=*(glob->iptr++);
-  if (a) rotate_block(glob->buffer_2,glob->buffer_a,a);
-  memcpy(glob->buffer_b,etable1+b*BLOCKSIZE,BLOCKSIZE*2);
-  e=((ftable1[b]>>4)*glob->gval)>>8;
-  memcpy(glob->buffer_c,etable2+c*BLOCKSIZE,BLOCKSIZE*2);
-  f=((ftable2[c]>>4)*glob->gval)>>8;
-  if (a) g=irms(glob->buffer_a,glob->gval)>>12;
-  else g=0;
-  add_wav(glob,d,a,g,e,f,glob->buffer_a,glob->buffer_b,glob->buffer_c,glob->buffer_d);
-  memmove(glob->buffer_2,glob->buffer_2+BLOCKSIZE,(BUFFERSIZE-BLOCKSIZE)*2);
-  memcpy(glob->buffer_2+BUFFERSIZE-BLOCKSIZE,glob->buffer_d,BLOCKSIZE*2);
-  final(glob,glob->gsp,glob->buffer_d,glob->output_buffer,glob->buffer,BLOCKSIZE);
-}
-
-/* rotate block */
-static void rotate_block(short *source, short *target, int offset)
-{
-  short *end;
-  short *ptr1;
-  short *ptr2;
-  short *ptr3;
-  ptr2=source+BUFFERSIZE;
-  ptr3=ptr1=ptr2-offset;
-  end=target+BLOCKSIZE;
-  while (target<end) {
-    *(target++)=*(ptr3++);
-    if (ptr3==ptr2) ptr3=ptr1;
-  }
-}
-
-/* inverse root mean square */
-static int irms(short *data, int factor)
-{
-  short *p1,*p2;
-  unsigned int sum;
-  p2=(p1=data)+BLOCKSIZE;
-  for (sum=0;p2>p1;p1++) sum+=(*p1)*(*p1);
-  if (sum==0) return 0; /* OOPS - division by zero */
-  return (0x20000000/(t_sqrt(sum)>>8))*factor;
-}
-
-/* multiply/add wavetable */
-static void add_wav(Real144_internal *glob, int n, int f, int m1, int m2, int m3, short *s1, short *s2, short *s3, short *dest)
-{
-  int a,b,c;
-  short *ptr,*ptr2;
-
-  ptr=glob->wavtable1+n*9;
-  ptr2=glob->wavtable2+n*9;
-  if (f!=0) {
-    a=((*ptr)*m1)>>((*ptr2)+1); 
-  } else {
-    a=0;
-  }
-  ptr++;ptr2++;
-  b=((*ptr)*m2)>>((*ptr2)+1);
-  ptr++;ptr2++;
-  c=((*ptr)*m3)>>((*ptr2)+1);
-  ptr2=(ptr=dest)+BLOCKSIZE;
-  if (f!=0)
-    while (ptr<ptr2)
-      *(ptr++)=((*(s1++))*a+(*(s2++))*b+(*(s3++))*c)>>12;
-  else
-    while (ptr<ptr2)
-      *(ptr++)=((*(s2++))*b+(*(s3++))*c)>>12;
-}
-
-
-static void final(Real144_internal *glob, short *i1, short *i2, void *out, int *statbuf, int len)
-{
-  int x,sum;
-  int buffer[10];
-  short *ptr;
-  short *ptr2;
-
-  memcpy(glob->work,statbuf,20);
-  memcpy(glob->work+10,i2,len*2);
-
-  buffer[9]=i1[0];
-  buffer[8]=i1[1];
-  buffer[7]=i1[2];
-  buffer[6]=i1[3];
-  buffer[5]=i1[4];
-  buffer[4]=i1[5];
-  buffer[3]=i1[6];
-  buffer[2]=i1[7];
-  buffer[1]=i1[8];
-  buffer[0]=i1[9];
-
-  ptr2=(ptr=glob->work)+len;
-  while (ptr<ptr2) {
-    for(sum=0,x=0;x<=9;x++)
-      sum+=buffer[x]*(ptr[x]);
-    sum=sum>>12;
-    x=ptr[10]-sum;
-    if (x<-32768 || x>32767)
-    {
-      memset(out,0,len*2);
-      memset(statbuf,0,20);
-      return;
-    }
-    ptr[10]=x;
-    ptr++;
-  }
-  memcpy(out,ptr+10-len,len*2);
-  memcpy(statbuf,ptr,20);
-}
-
-/* Decode 20-byte input */
-static void unpack_input(unsigned char *input, unsigned int *output)
-{
-  unsigned int outbuffer[28];
-  unsigned short inbuffer[10];
-  unsigned int x;
-  unsigned int *ptr;
-
-  /* fix endianness */
-  for (x=0;x<20;x+=2)
-    inbuffer[x/2]=(input[x]<<8)+input[x+1];
-
-  /* unpack */
-  ptr=outbuffer;
-  *(ptr++)=27;
-  *(ptr++)=(inbuffer[0]>>10)&0x3f;
-  *(ptr++)=(inbuffer[0]>>5)&0x1f;
-  *(ptr++)=inbuffer[0]&0x1f;
-  *(ptr++)=(inbuffer[1]>>12)&0xf;
-  *(ptr++)=(inbuffer[1]>>8)&0xf;
-  *(ptr++)=(inbuffer[1]>>5)&7;
-  *(ptr++)=(inbuffer[1]>>2)&7;
-  *(ptr++)=((inbuffer[1]<<1)&6)|((inbuffer[2]>>15)&1);
-  *(ptr++)=(inbuffer[2]>>12)&7;
-  *(ptr++)=(inbuffer[2]>>10)&3;
-  *(ptr++)=(inbuffer[2]>>5)&0x1f;
-  *(ptr++)=((inbuffer[2]<<2)&0x7c)|((inbuffer[3]>>14)&3);
-  *(ptr++)=(inbuffer[3]>>6)&0xff;
-  *(ptr++)=((inbuffer[3]<<1)&0x7e)|((inbuffer[4]>>15)&1);
-  *(ptr++)=(inbuffer[4]>>8)&0x7f;
-  *(ptr++)=(inbuffer[4]>>1)&0x7f;
-  *(ptr++)=((inbuffer[4]<<7)&0x80)|((inbuffer[5]>>9)&0x7f);
-  *(ptr++)=(inbuffer[5]>>2)&0x7f;
-  *(ptr++)=((inbuffer[5]<<5)&0x60)|((inbuffer[6]>>11)&0x1f);
-  *(ptr++)=(inbuffer[6]>>4)&0x7f;
-  *(ptr++)=((inbuffer[6]<<4)&0xf0)|((inbuffer[7]>>12)&0xf);
-  *(ptr++)=(inbuffer[7]>>5)&0x7f;
-  *(ptr++)=((inbuffer[7]<<2)&0x7c)|((inbuffer[8]>>14)&3);
-  *(ptr++)=(inbuffer[8]>>7)&0x7f;
-  *(ptr++)=((inbuffer[8]<<1)&0xfe)|((inbuffer[9]>>15)&1);
-  *(ptr++)=(inbuffer[9]>>8)&0x7f;
-  *(ptr++)=(inbuffer[9]>>1)&0x7f;
-
-  *(output++)=outbuffer[11];
-  for (x=1;x<11;*(output++)=outbuffer[x++]);
-  ptr=outbuffer+12;
-  for (x=0;x<16;x+=4)
-  {
-    *(output++)=ptr[x];
-    *(output++)=ptr[x+2];
-    *(output++)=ptr[x+3];
-    *(output++)=ptr[x+1];    
-  }
-}
-
-static unsigned int rms(int *data, int f)
-{
-  int *c;
-  int x;
-  unsigned int res;
-  int b;
-
-  c=data;
-  b=0;
-  res=0x10000;
-  for (x=0;x<10;x++)
-  {
-    res=(((0x1000000-(*c)*(*c))>>12)*res)>>12;
-    if (res==0) return 0;
-    if (res<=0x3fff)
-    {
-      while (res<=0x3fff)
-      {
-        b++;
-        res<<=2;
-      }
-    } else {
-      if (res>0x10000)
-        return 0; /* We're screwed, might as well go out with a bang. :P */
-    }
-    c++;
-  }
-  if (res>0) res=t_sqrt(res);
-
-  res>>=(b+10);
-  res=(res*f)>>10;
-  return res;
-}
-
-static void dec1(Real144_internal *glob, int *data, int *inp, int n, int f)
-{
-  short *ptr,*end;
-
-  *(glob->decptr++)=rms(data,f);
-  glob->decptr++;
-  end=(ptr=glob->decsp)+(n*10);
-  while (ptr<end) *(ptr++)=*(inp++);
-}
-
-static int eq(Real144_internal *glob, short *in, int *target)
-{
-  int retval;
-  int a;
-  int b;
-  int c;
-  unsigned int u;
-  short *sptr;
-  int *ptr1,*ptr2,*ptr3;
-  int *bp1,*bp2,*temp;
-
-  retval=0;
-  bp1=glob->buffer1;
-  bp2=glob->buffer2;
-  ptr2=(ptr3=glob->buffer2)+9;
-  sptr=in;
-  while (ptr2>=ptr3)
-    *(ptr3++)=*(sptr++);
-
-  target+=9;
-  a=bp2[9];
-  *target=a;
-  if (a+0x1000>0x1fff)
-    return 0; /* We're screwed, might as well go out with a bang. :P */
-  c=8;u=a;
-  while (c>=0)
-  {
-    if (u==0x1000) u++;
-    if (u==0xfffff000) u--;
-    b=0x1000-((u*u)>>12);
-    if (b==0) b++;
-    ptr2=bp1;
-    ptr1=(ptr3=bp2)+c;
-    for (u=0;u<=c;u++)
-      *(ptr2++)=((*(ptr3++)-(((*target)*(*(ptr1--)))>>12))*(0x1000000/b))>>12;
-    *(--target)=u=bp1[(c--)];
-    if ((u+0x1000)>0x1fff) retval=1;
-    temp=bp2;
-    bp2=bp1;
-    bp1=temp;
-  }
-  return retval;
-}
-
-static void dec2(Real144_internal *glob, int *data, int *inp, int n, int f, int *inp2, int l)
-{
-  unsigned int *ptr1,*ptr2;
-  int work[10];
-  int a,b;
-  int x;
-  int result;
-
-  if(l+1<NBLOCKS/2) a=NBLOCKS-(l+1);
-  else a=l+1;
-  b=NBLOCKS-a;
-  if (l==0)
-  {
-    glob->decsp=glob->sptr=glob->gbuf2;
-    glob->decptr=glob->gbuf1;
-  }
-  ptr1=inp;
-  ptr2=inp2;
-  for (x=0;x<10*n;x++)
-    *(glob->sptr++)=(a*(*ptr1++)+b*(*ptr2++))>>2;
-  result=eq(glob,glob->decsp,work);
-  if (result==1)
-  {
-    dec1(glob,data,inp,n,f);
-  } else {
-    *(glob->decptr++)=rms(work,f);
-    glob->decptr++;
-  }
-  glob->decsp+=n*10;
-}
-
-/* Uncompress one block (20 bytes -> 160*2 bytes) */
-static int ra144_decode_frame(AVCodecContext * avctx,
-            void *data, int *data_size,
-            uint8_t * buf, int buf_size)
-{
-  unsigned int a,b,c;
-  long s;
-  signed short *shptr;
-  unsigned int *lptr,*temp;
-  const short **dptr;
-  void *datao;
-  Real144_internal *glob=avctx->priv_data;
-
-  datao = data;
-  unpack_input(buf,glob->unpacked);
-  
-  glob->iptr=glob->unpacked;
-  glob->val=decodetable[0][(*(glob->iptr++))<<1];
-
-  dptr=decodetable+1;
-  lptr=glob->swapbuf1;
-  while (lptr<glob->swapbuf1+10)
-    *(lptr++)=(*(dptr++))[(*(glob->iptr++))<<1];
-
-  do_voice(glob->swapbuf1,glob->swapbuf2);
-
-  a=t_sqrt(glob->val*glob->oldval)>>12;
-
-  for (c=0;c<NBLOCKS;c++) {
-    if (c==(NBLOCKS-1)) {
-      dec1(glob,glob->swapbuf1,glob->swapbuf2,3,glob->val);
-    } else {
-      if (c*2==(NBLOCKS-2)) {
-        if (glob->oldval<glob->val) {
-          dec2(glob,glob->swapbuf1,glob->swapbuf2,3,a,glob->swapbuf2alt,c);
-        } else {
-          dec2(glob,glob->swapbuf1alt,glob->swapbuf2alt,3,a,glob->swapbuf2,c);
-        }
-      } else {
-        if (c*2<(NBLOCKS-2)) {
-          dec2(glob,glob->swapbuf1alt,glob->swapbuf2alt,3,glob->oldval,glob->swapbuf2,c);
-        } else {
-          dec2(glob,glob->swapbuf1,glob->swapbuf2,3,glob->val,glob->swapbuf2alt,c);
-        }
-      }
-    }
-  }
-
-  /* do output */
-  for (b=0,c=0;c<4;c++) {
-    glob->gval=glob->gbuf1[c*2];
-    glob->gsp=glob->gbuf2+b;
-    do_output_subblock(glob,glob->resetflag);
-    glob->resetflag=0;
-
-    shptr=glob->output_buffer;
-    while (shptr<glob->output_buffer+BLOCKSIZE) {
-      s=*(shptr++)<<2;
-      *((int16_t *)data)=s;
-      if (s>32767) *((int16_t *)data)=32767;
-      if (s<-32767) *((int16_t *)data)=-32768;
-      ((int16_t *)data)++;
-    }
-    b+=30;
-  }
-
-  glob->oldval=glob->val;
-  temp=glob->swapbuf1alt;
-  glob->swapbuf1alt=glob->swapbuf1;
-  glob->swapbuf1=temp;
-  temp=glob->swapbuf2alt;
-  glob->swapbuf2alt=glob->swapbuf2;
-  glob->swapbuf2=temp;
-  *data_size=data-datao;
-  return 20;
-}
-
-
-AVCodec ra_144_decoder =
-{
-    "real_144",
-    CODEC_TYPE_AUDIO,
-    CODEC_ID_RA_144,
-    sizeof(Real144_internal),
-    ra144_decode_init,
-    NULL,
-    NULL,
-    ra144_decode_frame,
-};