X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftags%2Fsynfig_0_61_05%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavcodec%2Fra288.c;fp=synfig-core%2Ftags%2Fsynfig_0_61_05%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavcodec%2Fra288.c;h=0000000000000000000000000000000000000000;hb=3a6643238c67c043fc3592837a05d6d2861967f1;hp=b59074822b2ff0a2e35d7fd5958927aa07a49622;hpb=47fce282611fbba1044921d22ca887f9b53ad91a;p=synfig.git diff --git a/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavcodec/ra288.c b/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavcodec/ra288.c deleted file mode 100644 index b590748..0000000 --- a/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavcodec/ra288.c +++ /dev/null @@ -1,278 +0,0 @@ -/* - * RealAudio 2.0 (28.8K) - * 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 "ra288.h" - -typedef struct { - float history[8]; - float output[40]; - float pr1[36]; - float pr2[10]; - int phase, phasep; - - float st1a[111],st1b[37],st1[37]; - float st2a[38],st2b[11],st2[11]; - float sb[41]; - float lhist[10]; -} Real288_internal; - -static int ra288_decode_init(AVCodecContext * avctx) -{ - Real288_internal *glob=avctx->priv_data; - memset(glob,0,sizeof(Real288_internal)); - return 0; -} - -static void prodsum(float *tgt, float *src, int len, int n); -static void co(int n, int i, int j, float *in, float *out, float *st1, float *st2, const float *table); -static int pred(float *in, float *tgt, int n); -static void colmult(float *tgt, float *m1, const float *m2, int n); - - -/* initial decode */ -static void unpack(unsigned short *tgt, unsigned char *src, int len) -{ - int x,y,z; - int n,temp; - int buffer[len]; - - for (x=0;x>(8-n); - tgt[y]+=temp<>n; - z=8-n; - } else z+=8; - } -} - -static void update(Real288_internal *glob) -{ - int x,y; - float buffer1[40],temp1[37]; - float buffer2[8],temp2[11]; - - for (x=0,y=glob->phasep+5;x<40;buffer1[x++]=glob->output[(y++)%40]); - co(36,40,35,buffer1,temp1,glob->st1a,glob->st1b,table1); - if (pred(temp1,glob->st1,36)) - colmult(glob->pr1,glob->st1,table1a,36); - - for (x=0,y=glob->phase+1;x<8;buffer2[x++]=glob->history[(y++)%8]); - co(10,8,20,buffer2,temp2,glob->st2a,glob->st2b,table2); - if (pred(temp2,glob->st2,10)) - colmult(glob->pr2,glob->st2,table2a,10); -} - -/* Decode and produce output */ -static void decode(Real288_internal *glob, unsigned int input) -{ - unsigned int x,y; - float f; - double sum,sumsum; - float *p1,*p2; - float buffer[5]; - const float *table; - - for (x=36;x--;glob->sb[x+5]=glob->sb[x]); - for (x=5;x--;) { - p1=glob->sb+x;p2=glob->pr1; - for (sum=0,y=36;y--;sum-=(*(++p1))*(*(p2++))); - glob->sb[x]=sum; - } - - f=amptable[input&7]; - table=codetable+(input>>3)*5; - - /* convert log and do rms */ - for (sum=32,x=10;x--;sum-=glob->pr2[x]*glob->lhist[x]); - if (sum<0) sum=0; else if (sum>60) sum=60; - - sumsum=exp(sum*0.1151292546497)*f; /* pow(10.0,sum/20)*f */ - for (sum=0,x=5;x--;) { buffer[x]=table[x]*sumsum; sum+=buffer[x]*buffer[x]; } - if ((sum/=5)<1) sum=1; - - /* shift and store */ - for (x=10;--x;glob->lhist[x]=glob->lhist[x-1]); - *glob->lhist=glob->history[glob->phase]=10*log10(sum)-32; - - for (x=1;x<5;x++) for (y=x;y--;buffer[x]-=glob->pr1[x-y-1]*buffer[y]); - - /* output */ - for (x=0;x<5;x++) { - f=glob->sb[4-x]+buffer[x]; - if (f>4095) f=4095; else if (f<-4095) f=-4095; - glob->output[glob->phasep+x]=glob->sb[4-x]=f; - } -} - -/* column multiply */ -static void colmult(float *tgt, float *m1, const float *m2, int n) -{ - while (n--) - *(tgt++)=(*(m1++))*(*(m2++)); -} - -static int pred(float *in, float *tgt, int n) -{ - int x,y; - float *p1,*p2; - double f0,f1,f2; - float temp; - - if (in[n]==0) return 0; - if ((f0=*in)<=0) return 0; - - for (x=1;;x++) { - if (n>1;y--;) { - temp=*p2+*p1*f2; - *(p1--)+=*p2*f2; - *(p2++)=temp; - } - if ((f0+=f1*f2)<0) return 0; - } -} - -static void co(int n, int i, int j, float *in, float *out, float *st1, float *st2, const float *table) -{ - int a,b,c; - unsigned int x; - float *fp; - float buffer1[37]; - float buffer2[37]; - float work[111]; - - /* rotate and multiply */ - c=(b=(a=n+i)+j)-i; - fp=st1+i; - for (x=0;x=0) - { - p1=(p2=src)-n; - for (sum=0,x=len;x--;sum+=(*p1++)*(*p2++)); - tgt[n--]=sum; - } -} - -void * decode_block(AVCodecContext * avctx, unsigned char *in, signed short int *out,unsigned len) -{ - int x,y; - Real288_internal *glob=avctx->priv_data; - unsigned short int buffer[len]; - - unpack(buffer,in,len); - for (x=0;x<32;x++) - { - glob->phasep=(glob->phase=x&7)*5; - decode(glob,buffer[x]); - for (y=0;y<5;*(out++)=8*glob->output[glob->phasep+(y++)]); - if (glob->phase==3) update(glob); - } - return out; -} - -/* Decode a block (celp) */ -static int ra288_decode_frame(AVCodecContext * avctx, - void *data, int *data_size, - uint8_t * buf, int buf_size) -{ - if(avctx->extradata_size>=6) - { -//((short*)(avctx->extradata))[0]; /* subpacket size */ -//((short*)(avctx->extradata))[1]; /* subpacket height */ -//((short*)(avctx->extradata))[2]; /* subpacket flavour */ -//((short*)(avctx->extradata))[3]; /* coded frame size */ -//((short*)(avctx->extradata))[4]; /* codec's data length */ -//((short*)(avctx->extradata))[5...] /* codec's data */ - int bret; - void *datao; - int w=avctx->block_align; /* 228 */ - int h=((short*)(avctx->extradata))[1]; /* 12 */ - int cfs=((short*)(avctx->extradata))[3]; /* coded frame size 38 */ - int i,j; - if(buf_size