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Update avcodec to 20080825

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27562 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
David McPaul
2008-09-15 14:12:05 +00:00
parent c17be5fb78
commit 46077e4bb0
12 changed files with 3347 additions and 3718 deletions
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src/add-ons/media/plugins/avcodec/libavcodec/ra144.c
+271 -428
View File
@@ -1,513 +1,356 @@
/*
* Real Audio 1.0 (14.4K)
* Copyright (c) 2003 the ffmpeg project
*
* This library is free software; you can redistribute it and/or
* Copyright (c) 2008 Vitor Sessak
* Copyright (c) 2003 Nick Kurshev
* Based on public domain decoder at http://www.honeypot.net/audio
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* FFmpeg 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
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avcodec.h"
#include "bitstream.h"
#include "ra144.h"
#include "acelp_filters.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 */
#define NBLOCKS 4 ///< number of subblocks within a block
#define BLOCKSIZE 40 ///< subblock size in 16-bit words
#define BUFFERSIZE 146 ///< the size of the adaptive codebook
/* 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;
unsigned int old_energy; ///< previous frame energy
/* 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 lpc_tables[2][10];
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];
/** LPC coefficients: lpc_coef[0] is the coefficients of the current frame
* and lpc_coef[1] of the previous one */
unsigned int *lpc_coef[2];
unsigned short int work[50];
unsigned short *sptr;
unsigned int lpc_refl_rms[2];
int buffer1[10];
int buffer2[10];
/** the current subblock padded by the last 10 values of the previous one*/
int16_t curr_sblock[50];
signed short wavtable1[2304];
unsigned short wavtable2[2304];
} Real144_internal;
/** adaptive codebook. Its size is two units bigger to avoid a
* buffer overflow */
uint16_t adapt_cb[148];
} RA144Context;
static int ra144_decode_init(AVCodecContext * avctx)
{
Real144_internal *glob=avctx->priv_data;
RA144Context *ractx = 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;
ractx->lpc_coef[0] = ractx->lpc_tables[0];
ractx->lpc_coef[1] = ractx->lpc_tables[1];
memcpy(glob->wavtable1,wavtable1,sizeof(wavtable1));
memcpy(glob->wavtable2,wavtable2,sizeof(wavtable2));
return 0;
avctx->sample_fmt = SAMPLE_FMT_S16;
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 */
/**
* Evaluate sqrt(x << 24). x must fit in 20 bits. This value is evaluated in an
* odd way to make the output identical to the binary decoder.
*/
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];
int s = 2;
while (x > 0xfff) {
s++;
x >>= 2;
}
tmp=b1;
b1=b2;
b2=tmp;
a1++;
}
ptr=a2+10;
while (ptr>a2) (*a2++)>>=4;
return ff_sqrt(x << 20) << s;
}
/* do quarter-block output */
static void do_output_subblock(Real144_internal *glob, int x)
/**
* Evaluate the LPC filter coefficients from the reflection coefficients.
* Does the inverse of the eval_refl() function.
*/
static void eval_coefs(int *coefs, const int *refl)
{
int a,b,c,d,e,f,g;
int buffer[10];
int *b1 = buffer;
int *b2 = coefs;
int i, j;
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);
}
for (i=0; i < 10; i++) {
b1[i] = refl[i] << 4;
/* 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;
}
}
for (j=0; j < i; j++)
b1[j] = ((refl[i] * b2[i-j-1]) >> 12) + b2[j];
/* 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;
FFSWAP(int *, b1, b2);
}
ptr[10]=x;
ptr++;
}
memcpy(out,ptr+10-len,len*2);
memcpy(statbuf,ptr,20);
for (i=0; i < 10; i++)
coefs[i] >>= 4;
}
/* Decode 20-byte input */
static void unpack_input(unsigned char *input, unsigned int *output)
/**
* Copy the last offset values of *source to *target. If those values are not
* enough to fill the target buffer, fill it with another copy of those values.
*/
static void copy_and_dup(int16_t *target, const int16_t *source, int offset)
{
unsigned int outbuffer[28];
unsigned short inbuffer[10];
unsigned int x;
unsigned int *ptr;
source += BUFFERSIZE - offset;
/* 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;
}
if (offset > BLOCKSIZE) {
memcpy(target, source, BLOCKSIZE*sizeof(*target));
} else {
if (res>0x10000)
return 0; /* We're screwed, might as well go out with a bang. :P */
memcpy(target, source, offset*sizeof(*target));
memcpy(target + offset, source, (BLOCKSIZE - offset)*sizeof(*target));
}
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)
/** inverse root mean square */
static int irms(const int16_t *data)
{
short *ptr,*end;
unsigned int i, sum = 0;
*(glob->decptr++)=rms(data,f);
glob->decptr++;
end=(ptr=glob->decsp)+(n*10);
while (ptr<end) *(ptr++)=*(inp++);
for (i=0; i < BLOCKSIZE; i++)
sum += data[i] * data[i];
if (sum == 0)
return 0; /* OOPS - division by zero */
return 0x20000000 / (t_sqrt(sum) >> 8);
}
static int eq(Real144_internal *glob, short *in, int *target)
static void add_wav(int16_t *dest, int n, int skip_first, int *m,
const int16_t *s1, const int8_t *s2, const int8_t *s3)
{
int retval;
int a;
int b;
int c;
unsigned int u;
short *sptr;
int *ptr1,*ptr2,*ptr3;
int *bp1,*bp2,*temp;
int i;
int v[3];
retval=0;
bp1=glob->buffer1;
bp2=glob->buffer2;
ptr2=(ptr3=glob->buffer2)+9;
sptr=in;
while (ptr2>=ptr3)
*(ptr3++)=*(sptr++);
v[0] = 0;
for (i=!skip_first; i<3; i++)
v[i] = (gain_val_tab[n][i] * m[i]) >> (gain_exp_tab[n][i] + 1);
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;
for (i=0; i < BLOCKSIZE; i++)
dest[i] = (s1[i]*v[0] + s2[i]*v[1] + s3[i]*v[2]) >> 12;
}
static void dec2(Real144_internal *glob, int *data, int *inp, int n, int f, int *inp2, int l)
static unsigned int rescale_rms(unsigned int rms, unsigned int energy)
{
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;
return (rms * energy) >> 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)
static unsigned int rms(const int *data)
{
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;
int i;
unsigned int res = 0x10000;
int b = 10;
datao = data;
unpack_input(buf,glob->unpacked);
glob->iptr=glob->unpacked;
glob->val=decodetable[0][(*(glob->iptr++))<<1];
for (i=0; i < 10; i++) {
res = (((0x1000000 - data[i]*data[i]) >> 12) * res) >> 12;
dptr=decodetable+1;
lptr=glob->swapbuf1;
while (lptr<glob->swapbuf1+10)
*(lptr++)=(*(dptr++))[(*(glob->iptr++))<<1];
if (res == 0)
return 0;
do_voice(glob->swapbuf1,glob->swapbuf2);
while (res <= 0x3fff) {
b++;
res <<= 2;
}
}
a=t_sqrt(glob->val*glob->oldval)>>12;
return t_sqrt(res) >> b;
}
for (c=0;c<NBLOCKS;c++) {
if (c==(NBLOCKS-1)) {
dec1(glob,glob->swapbuf1,glob->swapbuf2,3,glob->val);
static void do_output_subblock(RA144Context *ractx, const uint16_t *lpc_coefs,
int gval, GetBitContext *gb)
{
uint16_t buffer_a[40];
uint16_t *block;
int cba_idx = get_bits(gb, 7); // index of the adaptive CB, 0 if none
int gain = get_bits(gb, 8);
int cb1_idx = get_bits(gb, 7);
int cb2_idx = get_bits(gb, 7);
int m[3];
if (cba_idx) {
cba_idx += BLOCKSIZE/2 - 1;
copy_and_dup(buffer_a, ractx->adapt_cb, cba_idx);
m[0] = (irms(buffer_a) * gval) >> 12;
} 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);
}
}
m[0] = 0;
}
}
/* 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;
m[1] = (cb1_base[cb1_idx] * gval) >> 8;
m[2] = (cb2_base[cb2_idx] * gval) >> 8;
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;
data = (int16_t *)data + 1;
}
b+=30;
}
memmove(ractx->adapt_cb, ractx->adapt_cb + BLOCKSIZE,
(BUFFERSIZE - BLOCKSIZE) * sizeof(*ractx->adapt_cb));
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;
block = ractx->adapt_cb + BUFFERSIZE - BLOCKSIZE;
add_wav(block, gain, cba_idx, m, buffer_a,
cb1_vects[cb1_idx], cb2_vects[cb2_idx]);
memcpy(ractx->curr_sblock, ractx->curr_sblock + 40,
10*sizeof(*ractx->curr_sblock));
if (ff_acelp_lp_synthesis_filter(ractx->curr_sblock + 10, lpc_coefs,
block, BLOCKSIZE, 10, 1, 0xfff))
memset(ractx->curr_sblock, 0, 50*sizeof(*ractx->curr_sblock));
}
static void int_to_int16(int16_t *out, const int *inp)
{
int i;
for (i=0; i < 30; i++)
*(out++) = *(inp++);
}
/**
* Evaluate the reflection coefficients from the filter coefficients.
* Does the inverse of the eval_coefs() function.
*
* @return 1 if one of the reflection coefficients is of magnitude greater than
* 4095, 0 if not.
*/
static int eval_refl(int *refl, const int16_t *coefs, RA144Context *ractx)
{
int b, i, j;
int buffer1[10];
int buffer2[10];
int *bp1 = buffer1;
int *bp2 = buffer2;
for (i=0; i < 10; i++)
buffer2[i] = coefs[i];
refl[9] = bp2[9];
if ((unsigned) bp2[9] + 0x1000 > 0x1fff) {
av_log(ractx, AV_LOG_ERROR, "Overflow. Broken sample?\n");
return 1;
}
for (i=8; i >= 0; i--) {
b = 0x1000-((bp2[i+1] * bp2[i+1]) >> 12);
if (!b)
b = -2;
for (j=0; j <= i; j++)
bp1[j] = ((bp2[j] - ((refl[i+1] * bp2[i-j]) >> 12)) * (0x1000000 / b)) >> 12;
refl[i] = bp1[i];
if ((unsigned) bp1[i] + 0x1000 > 0x1fff)
return 1;
FFSWAP(int *, bp1, bp2);
}
return 0;
}
static int interp(RA144Context *ractx, int16_t *out, int block_num,
int copyold, int energy)
{
int work[10];
int a = block_num + 1;
int b = NBLOCKS - a;
int i;
// Interpolate block coefficients from the this frame forth block and
// last frame forth block
for (i=0; i<30; i++)
out[i] = (a * ractx->lpc_coef[0][i] + b * ractx->lpc_coef[1][i])>> 2;
if (eval_refl(work, out, ractx)) {
// The interpolated coefficients are unstable, copy either new or old
// coefficients
int_to_int16(out, ractx->lpc_coef[copyold]);
return rescale_rms(ractx->lpc_refl_rms[copyold], energy);
} else {
return rescale_rms(rms(work), energy);
}
}
/** Uncompress one block (20 bytes -> 160*2 bytes) */
static int ra144_decode_frame(AVCodecContext * avctx, void *vdata,
int *data_size, const uint8_t *buf, int buf_size)
{
static const uint8_t sizes[10] = {6, 5, 5, 4, 4, 3, 3, 3, 3, 2};
unsigned int refl_rms[4]; // RMS of the reflection coefficients
uint16_t block_coefs[4][30]; // LPC coefficients of each sub-block
unsigned int lpc_refl[10]; // LPC reflection coefficients of the frame
int i, j;
int16_t *data = vdata;
unsigned int energy;
RA144Context *ractx = avctx->priv_data;
GetBitContext gb;
if (*data_size < 2*160)
return -1;
if(buf_size < 20) {
av_log(avctx, AV_LOG_ERROR,
"Frame too small (%d bytes). Truncated file?\n", buf_size);
*data_size = 0;
return buf_size;
}
init_get_bits(&gb, buf, 20 * 8);
for (i=0; i<10; i++)
lpc_refl[i] = lpc_refl_cb[i][get_bits(&gb, sizes[i])];
eval_coefs(ractx->lpc_coef[0], lpc_refl);
ractx->lpc_refl_rms[0] = rms(lpc_refl);
energy = energy_tab[get_bits(&gb, 5)];
refl_rms[0] = interp(ractx, block_coefs[0], 0, 1, ractx->old_energy);
refl_rms[1] = interp(ractx, block_coefs[1], 1, energy <= ractx->old_energy,
t_sqrt(energy*ractx->old_energy) >> 12);
refl_rms[2] = interp(ractx, block_coefs[2], 2, 0, energy);
refl_rms[3] = rescale_rms(ractx->lpc_refl_rms[0], energy);
int_to_int16(block_coefs[3], ractx->lpc_coef[0]);
for (i=0; i < 4; i++) {
do_output_subblock(ractx, block_coefs[i], refl_rms[i], &gb);
for (j=0; j < BLOCKSIZE; j++)
*data++ = av_clip_int16(ractx->curr_sblock[j + 10] << 2);
}
ractx->old_energy = energy;
ractx->lpc_refl_rms[1] = ractx->lpc_refl_rms[0];
FFSWAP(unsigned int *, ractx->lpc_coef[0], ractx->lpc_coef[1]);
*data_size = 2*160;
return 20;
}
AVCodec ra_144_decoder =
{
"real_144",
CODEC_TYPE_AUDIO,
CODEC_ID_RA_144,
sizeof(Real144_internal),
sizeof(RA144Context),
ra144_decode_init,
NULL,
NULL,
ra144_decode_frame,
.long_name = NULL_IF_CONFIG_SMALL("RealAudio 1.0 (14.4K)"),
};
src/add-ons/media/plugins/avcodec/libavcodec/ra144.h
+1521 -2392
View File
File diff suppressed because it is too large Load Diff
src/add-ons/media/plugins/avcodec/libavcodec/ra288.c
+239 -245
View File
@@ -2,267 +2,260 @@
* RealAudio 2.0 (28.8K)
* Copyright (c) 2003 the ffmpeg project
*
* This library is free software; you can redistribute it and/or
* This file is part of FFmpeg.
*
* FFmpeg 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.
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* FFmpeg 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
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avcodec.h"
#define ALT_BITSTREAM_READER_LE
#include "bitstream.h"
#include "ra288.h"
typedef struct {
float history[8];
float output[40];
float pr1[36];
float pr2[10];
int phase, phasep;
float sp_lpc[36]; ///< LPC coefficients for speech data (spec: A)
float gain_lpc[10]; ///< LPC coefficients for gain (spec: GB)
float st1a[111],st1b[37],st1[37];
float st2a[38],st2b[11],st2[11];
float sb[41];
float lhist[10];
} Real288_internal;
float sp_hist[111]; ///< Speech data history (spec: SB)
static int ra288_decode_init(AVCodecContext * avctx)
/** Speech part of the gain autocorrelation (spec: REXP) */
float sp_rec[37];
float gain_hist[38]; ///< Log-gain history (spec: SBLG)
/** Recursive part of the gain autocorrelation (spec: REXPLG) */
float gain_rec[11];
float sp_block[41]; ///< Speech data of four blocks (spec: STTMP)
float gain_block[10]; ///< Gain data of four blocks (spec: GSTATE)
} RA288Context;
static av_cold 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<len;tgt[x++]=0)
buffer[x]=9+(x&1);
for (x=y=z=0;x<len/*was 38*/;x++) {
n=buffer[y]-z;
temp=src[x];
if (n<8) temp&=255>>(8-n);
tgt[y]+=temp<<z;
if (n<=8) {
tgt[++y]+=src[x]>>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<x) return 1;
p1=in+x;
p2=tgt;
f1=*(p1--);
for (y=x;--y;f1+=(*(p1--))*(*(p2++)));
p1=tgt+x-1;
p2=tgt;
*(p1--)=f2=-f1/f0;
for (y=x>>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<b;x++) {
if (x==c) fp=in;
work[x]=*(table++)*(*(st1++)=*(fp++));
}
prodsum(buffer1,work+n,i,n);
prodsum(buffer2,work+a,j,n);
for (x=0;x<=n;x++) {
*st2=*st2*(0.5625)+buffer1[x];
out[x]=*(st2++)+buffer2[x];
}
*out*=1.00390625; /* to prevent clipping */
}
/* product sum (lsf) */
static void prodsum(float *tgt, float *src, int len, int n)
{
unsigned int x;
float *p1,*p2;
double sum;
while (n>=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<w*h)
{
av_log(avctx, AV_LOG_ERROR, "ffra288: Error! Input buffer is too small [%d<%d]\n",buf_size,w*h);
return 0;
}
datao = data;
bret = 0;
for (j = 0; j < h/2; j++)
for (i = 0; i < h; i++)
{
data=decode_block(avctx,&buf[j*cfs+cfs*i*h/2],(signed short *)data,cfs);
bret += cfs;
}
*data_size = data - datao;
return bret;
}
else
{
av_log(avctx, AV_LOG_ERROR, "ffra288: Error: need extra data!!!\n");
avctx->sample_fmt = SAMPLE_FMT_S16;
return 0;
}
}
static inline float scalar_product_float(const float * v1, const float * v2,
int size)
{
float res = 0.;
while (size--)
res += *v1++ * *v2++;
return res;
}
static void colmult(float *tgt, const float *m1, const float *m2, int n)
{
while (n--)
*tgt++ = *m1++ * *m2++;
}
static void decode(RA288Context *ractx, float gain, int cb_coef)
{
int i, j;
double sumsum;
float sum, buffer[5];
float *block = ractx->sp_block + 36; // Current block
memmove(ractx->sp_block, ractx->sp_block + 5, 36*sizeof(*ractx->sp_block));
for (i=0; i < 5; i++) {
block[i] = 0.;
for (j=0; j < 36; j++)
block[i] -= block[i-1-j]*ractx->sp_lpc[j];
}
/* block 46 of G.728 spec */
sum = 32.;
for (i=0; i < 10; i++)
sum -= ractx->gain_block[9-i] * ractx->gain_lpc[i];
/* block 47 of G.728 spec */
sum = av_clipf(sum, 0, 60);
/* block 48 of G.728 spec */
sumsum = exp(sum * 0.1151292546497) * gain; /* pow(10.0,sum/20)*gain */
for (i=0; i < 5; i++)
buffer[i] = codetable[cb_coef][i] * sumsum;
sum = scalar_product_float(buffer, buffer, 5) / 5;
sum = FFMAX(sum, 1);
/* shift and store */
memmove(ractx->gain_block, ractx->gain_block + 1,
9 * sizeof(*ractx->gain_block));
ractx->gain_block[9] = 10 * log10(sum) - 32;
for (i=1; i < 5; i++)
for (j=i-1; j >= 0; j--)
buffer[i] -= ractx->sp_lpc[i-j-1] * buffer[j];
/* output */
for (i=0; i < 5; i++)
block[i] = av_clipf(block[i] + buffer[i], -4095, 4095);
}
/**
* Converts autocorrelation coefficients to LPC coefficients using the
* Levinson-Durbin algorithm. See blocks 37 and 50 of the G.728 specification.
*
* @return 0 if success, -1 if fail
*/
static int eval_lpc_coeffs(const float *in, float *tgt, int n)
{
int i, j;
double f0, f1, f2;
if (in[n] == 0)
return -1;
if ((f0 = *in) <= 0)
return -1;
in--; // To avoid a -1 subtraction in the inner loop
for (i=1; i <= n; i++) {
f1 = in[i+1];
for (j=0; j < i - 1; j++)
f1 += in[i-j]*tgt[j];
tgt[i-1] = f2 = -f1/f0;
for (j=0; j < i >> 1; j++) {
float temp = tgt[j] + tgt[i-j-2]*f2;
tgt[i-j-2] += tgt[j]*f2;
tgt[j] = temp;
}
if ((f0 += f1*f2) < 0)
return -1;
}
return 0;
}
static void convolve(float *tgt, const float *src, int len, int n)
{
for (; n >= 0; n--)
tgt[n] = scalar_product_float(src, src - n, len);
}
/**
* Hybrid window filtering. See blocks 36 and 49 of the G.728 specification.
*
* @param order the order of the filter
* @param n the length of the input
* @param non_rec the number of non-recursive samples
* @param out the filter output
* @param in pointer to the input of the filter
* @param hist pointer to the input history of the filter. It is updated by
* this function.
* @param out pointer to the non-recursive part of the output
* @param out2 pointer to the recursive part of the output
* @param window pointer to the windowing function table
*/
static void do_hybrid_window(int order, int n, int non_rec, const float *in,
float *out, float *hist, float *out2,
const float *window)
{
int i;
float buffer1[order + 1];
float buffer2[order + 1];
float work[order + n + non_rec];
/* update history */
memmove(hist , hist + n, (order + non_rec)*sizeof(*hist));
memcpy (hist + order + non_rec, in , n *sizeof(*hist));
colmult(work, window, hist, order + n + non_rec);
convolve(buffer1, work + order , n , order);
convolve(buffer2, work + order + n, non_rec, order);
for (i=0; i <= order; i++) {
out2[i] = out2[i] * 0.5625 + buffer1[i];
out [i] = out2[i] + buffer2[i];
}
/* Multiply by the white noise correcting factor (WNCF) */
*out *= 257./256.;
}
/**
* Backward synthesis filter. Find the LPC coefficients from past speech data.
*/
static void backward_filter(RA288Context *ractx)
{
float temp1[37]; // RTMP in the spec
float temp2[11]; // GPTPMP in the spec
do_hybrid_window(36, 40, 35, ractx->sp_block+1, temp1, ractx->sp_hist,
ractx->sp_rec, syn_window);
if (!eval_lpc_coeffs(temp1, ractx->sp_lpc, 36))
colmult(ractx->sp_lpc, ractx->sp_lpc, syn_bw_tab, 36);
do_hybrid_window(10, 8, 20, ractx->gain_block+2, temp2, ractx->gain_hist,
ractx->gain_rec, gain_window);
if (!eval_lpc_coeffs(temp2, ractx->gain_lpc, 10))
colmult(ractx->gain_lpc, ractx->gain_lpc, gain_bw_tab, 10);
}
static int ra288_decode_frame(AVCodecContext * avctx, void *data,
int *data_size, const uint8_t * buf,
int buf_size)
{
int16_t *out = data;
int i, j;
RA288Context *ractx = avctx->priv_data;
GetBitContext gb;
if (buf_size < avctx->block_align) {
av_log(avctx, AV_LOG_ERROR,
"Error! Input buffer is too small [%d<%d]\n",
buf_size, avctx->block_align);
return 0;
}
if (*data_size < 32*5*2)
return -1;
init_get_bits(&gb, buf, avctx->block_align * 8);
for (i=0; i < 32; i++) {
float gain = amptable[get_bits(&gb, 3)];
int cb_coef = get_bits(&gb, 6 + (i&1));
decode(ractx, gain, cb_coef);
for (j=0; j < 5; j++)
*(out++) = 8 * ractx->sp_block[36 + j];
if ((i & 7) == 3)
backward_filter(ractx);
}
*data_size = (char *)out - (char *)data;
return avctx->block_align;
}
AVCodec ra_288_decoder =
@@ -270,9 +263,10 @@ AVCodec ra_288_decoder =
"real_288",
CODEC_TYPE_AUDIO,
CODEC_ID_RA_288,
sizeof(Real288_internal),
sizeof(RA288Context),
ra288_decode_init,
NULL,
NULL,
ra288_decode_frame,
.long_name = NULL_IF_CONFIG_SMALL("RealAudio 2.0 (28.8K)"),
};
src/add-ons/media/plugins/avcodec/libavcodec/ra288.h
+184 -178
View File
@@ -2,202 +2,208 @@
* RealAudio 2.0 (28.8K)
* Copyright (c) 2003 the ffmpeg project
*
* This library is free software; you can redistribute it and/or
* This file is part of FFmpeg.
*
* FFmpeg 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.
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* FFmpeg 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
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef RA288TABLES_H
#define RA288TABLES_H
#ifndef FFMPEG_RA288_H
#define FFMPEG_RA288_H
static const float amptable[8]={ 0.515625, 0.90234375, 1.57910156, 2.76342773,
-0.515625,-0.90234375,-1.57910156,-2.76342773 };
static const float codetable[640]={
0.326171875, -1.4404296875, -0.6123046875, -0.8740234375, -1.24658203125,
-2.45703125, -2.23486328125, -0.51025390625, 1.419921875, 1.6201171875,
-1.37646484375, -1.30712890625, -0.462890625, -1.37939453125, -2.1728515625,
-3.26123046875, -0.166015625, 0.7236328125, -0.623046875, 0.6162109375,
-0.2744140625, -3.29931640625, 0.62548828125, 0.08740234375, -0.6220703125,
-1.2265625, -3.4814453125, -2.40478515625, 3.37548828125, 1.17724609375,
-1.2099609375, -0.076171875, 2.28662109375, -1.89111328125, 0,
-4.0078125, 1.044921875, -0.2333984375, -1.35986328125, 0.26025390625,
0.92236328125, 1.34716796875, 0.67431640625, -3.39599609375, -2.88720703125,
2.4814453125, -1.201171875, -2.8212890625, 0.87744140625, 0.27734375,
-1.078125, -1.61572265625, -2.20849609375, -3.044921875, -3.66455078125,
-1.32763671875, 2.1279296875, -1.458984375, -0.56103515625, 1.30078125,
0.61474609375, 0.48583984375, 1.32373046875, -1.203125, -5.0732421875,
0.8408203125, -3.69580078125, -1.3388671875, 1.06005859375, -1.13720703125,
0.50390625, 0.36474609375, -0.4189453125, -3.8798828125, -6.27099609375,
1.5166015625, 2.37109375, -2.04736328125, -1.24072265625, 0.50537109375,
0.9091796875, -0.46875, -3.236328125, 0.2001953125, 2.8720703125,
-1.21728515625, -1.283203125, -1.953125, -0.029296875, 3.5166015625,
-1.3046875, 0.7060546875, 0.75, -1.87060546875, 0.60205078125,
-2.5888671875, 3.375, 0.77587890625, -2.04443359375, 1.78955078125,
-1.6875, -3.9892578125, -3.76416015625, 0.67578125, 2.2939453125,
-2.29443359375, -3.03173828125, -5.45703125, 3.95703125, 8.2177734375,
0.4541015625, 3.419921875, 0.61962890625, -4.38330078125, 1.25341796875,
2.27001953125, 5.763671875, 1.68017578125, -2.76220703125, 0.58544921875,
1.2412109375, -0.08935546875, -4.32568359375, -3.89453125, 1.5771484375,
-1.40234375, -0.98193359375, -4.74267578125, -4.09423828125, 6.33935546875,
1.5068359375, 1.044921875, -1.796875, -4.70849609375, -1.4140625,
-3.71533203125, 3.18115234375, -1.11474609375, -1.2314453125, 3.091796875,
-1.62744140625, -2.744140625, -4.4580078125, -5.43505859375, 2.70654296875,
-0.19873046875, -3.28173828125, -8.5283203125, -1.41064453125, 5.6484375,
1.802734375, 3.318359375, -0.1279296875, -5.2958984375, -0.90625,
3.55224609375, 6.544921875, -1.45947265625, -5.17333984375, 2.41015625,
0.119140625, -1.08349609375, 1.296875, 1.84375, -2.642578125,
-1.97412109375, -2.8974609375, 1.04052734375, 0.42138671875, -1.3994140625,
-1.6123046875, 0.85107421875, -0.9794921875, -0.0625, -1.001953125,
-3.10595703125, 1.6318359375, -0.77294921875, -0.01025390625, 0.5576171875,
-1.87353515625, -0.89404296875, 3.12353515625, 1.24267578125, -1.390625,
-4.556640625, -3.1875, 2.59228515625, 0.9697265625, -1.09619140625,
-2.1923828125, 0.365234375, 0.94482421875, -1.47802734375, -0.24072265625,
-4.51904296875, 2.6201171875, 1.55908203125, -2.19384765625, 0.87109375,
2.3359375, -0.1806640625, 0.9111328125, 0.51611328125, -0.92236328125,
3.5849609375, -1.3134765625, -1.25830078125, 0.330078125, -0.29833984375,
-0.2451171875, 1.09130859375, -0.9033203125, -0.86767578125, -1.00048828125,
0.49365234375, 1.89453125, -1.20361328125, 1.07861328125, -0.07421875,
1.265625, 1.38134765625, 2.728515625, 1.38623046875, -3.5673828125,
-1.48876953125, -2.4013671875, 2.90771484375, 4.49267578125, -2.17138671875,
0.34033203125, 1.908203125, 2.8310546875, -2.17333984375, -2.267578125,
-1.03564453125, 2.658203125, -1.2548828125, 0.15673828125, -0.5869140625,
1.3896484375, -1.0185546875, 1.724609375, 0.2763671875, -0.345703125,
-2.08935546875, 0.4638671875, 2.431640625, 1.83056640625, 0.220703125,
-1.212890625, 1.7099609375, 0.83935546875, -0.0830078125, 0.1162109375,
-1.67724609375, 0.12841796875, 1.0322265625, -0.97900390625, 1.15283203125,
-3.5830078125, -0.58984375, 4.56396484375, -0.59375, -1.95947265625,
-6.5908203125, -0.21435546875, 3.919921875, -2.06640625, 0.17626953125,
-1.82080078125, 2.65283203125, 0.978515625, -2.30810546875, -0.61474609375,
-1.9462890625, 3.78076171875, 4.11572265625, -1.80224609375, -0.48193359375,
2.5380859375, -0.20654296875, 0.5615234375, -0.62548828125, 0.3984375,
3.61767578125, 2.00634765625, -1.92822265625, 1.3134765625, 0.0146484384313,
0.6083984375, 1.49169921875, -0.01708984375, -0.6689453125, -0.1201171875,
-0.72705078125, 2.75146484375, -0.3310546875, -1.28271484375, 1.5478515625,
2.3583984375, -2.23876953125, 0.98046875, -0.5185546875, 0.39013671875,
-0.06298828125, 0.35009765625, 2.2431640625, 7.29345703125, 5.2275390625,
0.20361328125, 1.34716796875, 0.9033203125, -2.46923828125, -0.56298828125,
-1.89794921875, 3.59423828125, -2.81640625, 2.09228515625, 0.3251953125,
0.70458984375, -0.4580078125, 0.009765625, -1.03466796875, -0.82861328125,
-1.8125, -1.6611328125, -1.080078125, 0.0537109375, 1.04296875,
-1.44140625, 0.005859375, -0.765625, -1.708984375, -0.90576171875,
-0.64208984375, -0.84521484375, 0.56640625, -0.2724609375, 0.83447265625,
0.04296875, -2.23095703125, 0.0947265625, -0.2216796875, -1.44384765625,
-1.38623046875, -0.8134765625, -0.13330078125, 1.017578125, -0.07568359375,
-0.09228515625, -1.16015625, 0.81201171875, -0.5078125, -1.19580078125,
-1.3876953125, -0.66845703125, 0.310546875, -0.12109375, -1.30712890625,
0.74072265625, 0.03857421875, -1.47119140625, -1.79150390625, -0.47509765625,
0.93408203125, -1.21728515625, -2.59375, -0.36572265625, 0.62060546875,
-1.41748046875, -1.623046875, -1.833984375, -1.8017578125, -0.89306640625,
-1.42236328125, -0.75537109375, -1.34765625, -0.6865234375, 0.548828125,
0.900390625, -0.8955078125, 0.22265625, 0.3447265625, -2.0859375,
0.22802734375, -2.078125, -0.93212890625, 0.74267578125, 0.5537109375,
-0.06201171875, -0.4853515625, -0.31103515625, -0.72802734375, -3.1708984375,
0.42626953125, -0.99853515625, -1.869140625, -1.36328125, -0.2822265625,
1.12841796875, -0.88720703125, 1.28515625, -1.490234375, 0.9609375,
0.31298828125, 0.5830078125, 0.92431640625, 2.00537109375, 3.0966796875,
-0.02197265625, 0.5849609375, 1.0546875, -0.70751953125, 1.07568359375,
-0.978515625, 0.83642578125, 1.7177734375, 1.294921875, 2.07568359375,
1.43359375, -1.9375, 0.625, 0.06396484375, -0.720703125,
1.38037109375, 0.00390625, -0.94140625, 1.2978515625, 1.71533203125,
1.56201171875, -0.3984375, 1.31201171875, -0.85009765625, -0.68701171875,
1.439453125, 1.96728515625, 0.1923828125, -0.12353515625, 0.6337890625,
2.0927734375, 0.02490234375, -2.20068359375, -0.015625, -0.32177734375,
1.90576171875, 2.7568359375, -2.728515625, -1.265625, 2.78662109375,
-0.2958984375, 0.6025390625, -0.78466796875, -2.53271484375, 0.32421875,
-0.25634765625, 1.767578125, -1.0703125, -1.23388671875, 0.83349609375,
2.09814453125, -1.58740234375, -1.11474609375, 0.396484375, -1.10546875,
2.81494140625, 0.2578125, -1.60498046875, 0.66015625, 0.81640625,
1.33544921875, 0.60595703125, -0.53857421875, -1.59814453125, -1.66357421875,
1.96923828125, 0.8046875, -1.44775390625, -0.5732421875, 0.705078125,
0.0361328125, 0.4482421875, 0.97607421875, 0.44677734375, -0.5009765625,
-1.21875, -0.78369140625, 0.9931640625, 1.4404296875, 0.11181640625,
-1.05859375, 0.99462890625, 0.00732421921566,-0.6171875, -0.1015625,
-1.734375, 0.7470703125, 0.28369140625, 0.72802734375, 0.4697265625,
-1.27587890625, -1.1416015625, 1.76806640625, -0.7265625, -1.06689453125,
-0.85302734375, 0.03955078125, 2.7041015625, 0.69921875, -1.10205078125,
-0.49755859375, 0.42333984375, 0.1044921875, -1.115234375, -0.7373046875,
-0.822265625, 1.375, -0.11181640625, 1.24560546875, -0.67822265625,
1.32177734375, 0.24609375, 0.23388671875, 1.35888671875, -0.49267578125,
1.22900390625, -0.72607421875, -0.779296875, 0.30322265625, 0.94189453125,
-0.072265625, 1.0771484375, -2.09375, 0.630859375, -0.68408203125,
-0.25732421875, 0.60693359375, -1.33349609375, 0.93212890625, 0.625,
1.04931640625, -0.73291015625, 1.80078125, 0.2978515625, -2.24169921875,
1.6142578125, -1.64501953125, 0.91552734375, 1.775390625, -0.59423828125,
1.2568359375, 1.22705078125, 0.70751953125, -1.5009765625, -2.43115234375,
0.3974609375, 0.8916015625, -1.21923828125, 2.0673828125, -1.99072265625,
0.8125, -0.107421875, 1.6689453125, 0.4892578125, 0.54443359375,
0.38134765625, 0.8095703125, 1.91357421875, 2.9931640625, 1.533203125,
0.560546875, 1.98486328125, 0.740234375, 0.39794921875, 0.09716796875,
0.58154296875, 1.21533203125, 1.25048828125, 1.18212890625, 1.19287109375,
0.3759765625, -2.88818359375, 2.69287109375, -0.1796875, -1.56201171875,
0.5810546875, 0.51123046875, 1.8271484375, 3.38232421875, -1.02001953125,
0.142578125, 1.51318359375, 2.103515625, -0.3701171875, -1.19873046875,
0.25537109375, 1.91455078125, 1.974609375, 0.6767578125, 0.04150390625,
2.13232421875, 0.4912109375, -0.611328125, -0.7158203125, -0.67529296875,
1.880859375, 0.77099609375, -0.03759765625, 1.0078125, 0.423828125,
2.49462890625, 1.42529296875, -0.0986328125, 0.17529296875, -0.24853515625,
1.7822265625, 1.5654296875, 1.12451171875, 0.82666015625, 0.6328125,
1.41845703125, -1.90771484375, 0.11181640625, -0.583984375, -1.138671875,
2.91845703125, -1.75048828125, 0.39306640625, 1.86767578125, -1.5322265625,
1.8291015625, -0.2958984375, 0.02587890625, -0.13134765625, -1.61181640625,
0.2958984375, 0.9853515625, -0.642578125, 1.984375, 0.1943359375
static const float amptable[8]={
0.515625, 0.90234375, 1.57910156, 2.76342773,
-0.515625, -0.90234375, -1.57910156, -2.76342773
};
static const float table1[111]={
0.576690972, 0.580838025, 0.585013986, 0.589219987, 0.59345597, 0.597723007,
0.602020264, 0.606384277, 0.610748291, 0.615142822, 0.619598389, 0.624084473,
0.628570557, 0.633117676, 0.637695313, 0.642272949, 0.646911621, 0.651580811,
0.656280518, 0.66104126, 0.665802002, 0.670593262, 0.675445557, 0.680328369,
0.685241699, 0.690185547, 0.695159912, 0.700164795, 0.705230713, 0.710327148,
0.715454102, 0.720611572, 0.725830078, 0.731048584, 0.736328125, 0.741638184,
0.747009277, 0.752380371, 0.7578125, 0.763305664, 0.768798828, 0.774353027,
0.779937744, 0.785583496, 0.791229248, 0.796936035, 0.802703857, 0.808502197,
0.814331055, 0.820220947, 0.826141357, 0.832092285, 0.838104248, 0.844146729,
0.850250244, 0.856384277, 0.862548828, 0.868774414, 0.875061035, 0.881378174,
0.88772583, 0.894134521, 0.900604248, 0.907104492, 0.913635254, 0.920227051,
0.926879883, 0.933563232, 0.940307617, 0.94708252, 0.953918457, 0.96081543,
0.96774292, 0.974731445, 0.981781006, 0.988861084, 0.994842529, 0.998565674,
0.999969482, 0.99911499, 0.996002197, 0.990600586, 0.982910156, 0.973022461,
0.960876465, 0.946533203, 0.930053711, 0.911437988, 0.89074707, 0.868041992,
0.843322754, 0.816680908, 0.788208008, 0.757904053, 0.725891113, 0.692199707,
0.656921387, 0.620178223, 0.582000732, 0.542480469, 0.501739502, 0.459838867,
0.416900635, 0.373016357, 0.328277588, 0.282775879, 0.236663818, 0.189971924,
0.142852783, 0.0954284668, 0.0477600098
static const float codetable[128][5]={
{ 0.326171875, -1.4404296875, -0.6123046875, -0.8740234375, -1.24658203125},
{-2.45703125, -2.23486328125, -0.51025390625, 1.419921875, 1.6201171875 },
{-1.37646484375, -1.30712890625, -0.462890625, -1.37939453125, -2.1728515625 },
{-3.26123046875, -0.166015625, 0.7236328125, -0.623046875, 0.6162109375 },
{-0.2744140625, -3.29931640625, 0.62548828125, 0.08740234375, -0.6220703125 },
{-1.2265625, -3.4814453125, -2.40478515625, 3.37548828125, 1.17724609375},
{-1.2099609375, -0.076171875, 2.28662109375, -1.89111328125, 0 },
{-4.0078125, 1.044921875, -0.2333984375, -1.35986328125, 0.26025390625},
{ 0.92236328125, 1.34716796875, 0.67431640625, -3.39599609375, -2.88720703125},
{ 2.4814453125, -1.201171875, -2.8212890625, 0.87744140625, 0.27734375 },
{-1.078125, -1.61572265625, -2.20849609375, -3.044921875, -3.66455078125},
{-1.32763671875, 2.1279296875, -1.458984375, -0.56103515625, 1.30078125 },
{ 0.61474609375, 0.48583984375, 1.32373046875, -1.203125, -5.0732421875 },
{ 0.8408203125, -3.69580078125, -1.3388671875, 1.06005859375, -1.13720703125},
{ 0.50390625, 0.36474609375, -0.4189453125, -3.8798828125, -6.27099609375},
{ 1.5166015625, 2.37109375, -2.04736328125, -1.24072265625, 0.50537109375},
{ 0.9091796875, -0.46875, -3.236328125, 0.2001953125, 2.8720703125 },
{-1.21728515625, -1.283203125, -1.953125, -0.029296875, 3.5166015625 },
{-1.3046875, 0.7060546875, 0.75, -1.87060546875, 0.60205078125},
{-2.5888671875, 3.375, 0.77587890625, -2.04443359375, 1.78955078125},
{-1.6875, -3.9892578125, -3.76416015625, 0.67578125, 2.2939453125 },
{-2.29443359375, -3.03173828125, -5.45703125, 3.95703125, 8.2177734375 },
{ 0.4541015625, 3.419921875, 0.61962890625, -4.38330078125, 1.25341796875},
{ 2.27001953125, 5.763671875, 1.68017578125, -2.76220703125, 0.58544921875},
{ 1.2412109375, -0.08935546875, -4.32568359375, -3.89453125, 1.5771484375 },
{-1.40234375, -0.98193359375, -4.74267578125, -4.09423828125, 6.33935546875},
{ 1.5068359375, 1.044921875, -1.796875, -4.70849609375, -1.4140625 },
{-3.71533203125, 3.18115234375, -1.11474609375, -1.2314453125, 3.091796875 },
{-1.62744140625, -2.744140625, -4.4580078125, -5.43505859375, 2.70654296875},
{-0.19873046875, -3.28173828125, -8.5283203125, -1.41064453125, 5.6484375 },
{ 1.802734375, 3.318359375, -0.1279296875, -5.2958984375, -0.90625 },
{ 3.55224609375, 6.544921875, -1.45947265625, -5.17333984375, 2.41015625 },
{ 0.119140625, -1.08349609375, 1.296875, 1.84375, -2.642578125 },
{-1.97412109375, -2.8974609375, 1.04052734375, 0.42138671875, -1.3994140625 },
{-1.6123046875, 0.85107421875, -0.9794921875, -0.0625, -1.001953125 },
{-3.10595703125, 1.6318359375, -0.77294921875, -0.01025390625, 0.5576171875 },
{-1.87353515625, -0.89404296875, 3.12353515625, 1.24267578125, -1.390625 },
{-4.556640625, -3.1875, 2.59228515625, 0.9697265625, -1.09619140625},
{-2.1923828125, 0.365234375, 0.94482421875, -1.47802734375, -0.24072265625},
{-4.51904296875, 2.6201171875, 1.55908203125, -2.19384765625, 0.87109375 },
{ 2.3359375, -0.1806640625, 0.9111328125, 0.51611328125, -0.92236328125},
{ 3.5849609375, -1.3134765625, -1.25830078125, 0.330078125, -0.29833984375},
{-0.2451171875, 1.09130859375, -0.9033203125, -0.86767578125, -1.00048828125},
{ 0.49365234375, 1.89453125, -1.20361328125, 1.07861328125, -0.07421875 },
{ 1.265625, 1.38134765625, 2.728515625, 1.38623046875, -3.5673828125 },
{-1.48876953125, -2.4013671875, 2.90771484375, 4.49267578125, -2.17138671875},
{ 0.34033203125, 1.908203125, 2.8310546875, -2.17333984375, -2.267578125 },
{-1.03564453125, 2.658203125, -1.2548828125, 0.15673828125, -0.5869140625 },
{ 1.3896484375, -1.0185546875, 1.724609375, 0.2763671875, -0.345703125 },
{-2.08935546875, 0.4638671875, 2.431640625, 1.83056640625, 0.220703125 },
{-1.212890625, 1.7099609375, 0.83935546875, -0.0830078125, 0.1162109375 },
{-1.67724609375, 0.12841796875, 1.0322265625, -0.97900390625, 1.15283203125},
{-3.5830078125, -0.58984375, 4.56396484375, -0.59375, -1.95947265625},
{-6.5908203125, -0.21435546875, 3.919921875, -2.06640625, 0.17626953125},
{-1.82080078125, 2.65283203125, 0.978515625, -2.30810546875, -0.61474609375},
{-1.9462890625, 3.78076171875, 4.11572265625, -1.80224609375, -0.48193359375},
{ 2.5380859375, -0.20654296875, 0.5615234375, -0.62548828125, 0.3984375 },
{ 3.61767578125, 2.00634765625, -1.92822265625, 1.3134765625, 0.0146484384313},
{ 0.6083984375, 1.49169921875, -0.01708984375, -0.6689453125, -0.1201171875 },
{-0.72705078125, 2.75146484375, -0.3310546875, -1.28271484375, 1.5478515625 },
{ 2.3583984375, -2.23876953125, 0.98046875, -0.5185546875, 0.39013671875},
{-0.06298828125, 0.35009765625, 2.2431640625, 7.29345703125, 5.2275390625 },
{ 0.20361328125, 1.34716796875, 0.9033203125, -2.46923828125, -0.56298828125},
{-1.89794921875, 3.59423828125, -2.81640625, 2.09228515625, 0.3251953125 },
{ 0.70458984375, -0.4580078125, 0.009765625, -1.03466796875, -0.82861328125},
{-1.8125, -1.6611328125, -1.080078125, 0.0537109375, 1.04296875 },
{-1.44140625, 0.005859375, -0.765625, -1.708984375, -0.90576171875},
{-0.64208984375, -0.84521484375, 0.56640625, -0.2724609375, 0.83447265625},
{ 0.04296875, -2.23095703125, 0.0947265625, -0.2216796875, -1.44384765625},
{-1.38623046875, -0.8134765625, -0.13330078125, 1.017578125, -0.07568359375},
{-0.09228515625, -1.16015625, 0.81201171875, -0.5078125, -1.19580078125},
{-1.3876953125, -0.66845703125, 0.310546875, -0.12109375, -1.30712890625},
{ 0.74072265625, 0.03857421875, -1.47119140625, -1.79150390625, -0.47509765625},
{ 0.93408203125, -1.21728515625, -2.59375, -0.36572265625, 0.62060546875},
{-1.41748046875, -1.623046875, -1.833984375, -1.8017578125, -0.89306640625},
{-1.42236328125, -0.75537109375, -1.34765625, -0.6865234375, 0.548828125 },
{ 0.900390625, -0.8955078125, 0.22265625, 0.3447265625, -2.0859375 },
{ 0.22802734375, -2.078125, -0.93212890625, 0.74267578125, 0.5537109375 },
{-0.06201171875, -0.4853515625, -0.31103515625, -0.72802734375, -3.1708984375 },
{ 0.42626953125, -0.99853515625, -1.869140625, -1.36328125, -0.2822265625 },
{ 1.12841796875, -0.88720703125, 1.28515625, -1.490234375, 0.9609375 },
{ 0.31298828125, 0.5830078125, 0.92431640625, 2.00537109375, 3.0966796875 },
{-0.02197265625, 0.5849609375, 1.0546875, -0.70751953125, 1.07568359375},
{-0.978515625, 0.83642578125, 1.7177734375, 1.294921875, 2.07568359375},
{ 1.43359375, -1.9375, 0.625, 0.06396484375, -0.720703125 },
{ 1.38037109375, 0.00390625, -0.94140625, 1.2978515625, 1.71533203125},
{ 1.56201171875, -0.3984375, 1.31201171875, -0.85009765625, -0.68701171875},
{ 1.439453125, 1.96728515625, 0.1923828125, -0.12353515625, 0.6337890625 },
{ 2.0927734375, 0.02490234375, -2.20068359375, -0.015625, -0.32177734375},
{ 1.90576171875, 2.7568359375, -2.728515625, -1.265625, 2.78662109375},
{-0.2958984375, 0.6025390625, -0.78466796875, -2.53271484375, 0.32421875 },
{-0.25634765625, 1.767578125, -1.0703125, -1.23388671875, 0.83349609375},
{ 2.09814453125, -1.58740234375, -1.11474609375, 0.396484375, -1.10546875 },
{ 2.81494140625, 0.2578125, -1.60498046875, 0.66015625, 0.81640625 },
{ 1.33544921875, 0.60595703125, -0.53857421875, -1.59814453125, -1.66357421875},
{ 1.96923828125, 0.8046875, -1.44775390625, -0.5732421875, 0.705078125 },
{ 0.0361328125, 0.4482421875, 0.97607421875, 0.44677734375, -0.5009765625 },
{-1.21875, -0.78369140625, 0.9931640625, 1.4404296875, 0.11181640625},
{-1.05859375, 0.99462890625,0.00732421921566,-0.6171875, -0.1015625 },
{-1.734375, 0.7470703125, 0.28369140625, 0.72802734375, 0.4697265625 },
{-1.27587890625, -1.1416015625, 1.76806640625, -0.7265625, -1.06689453125},
{-0.85302734375, 0.03955078125, 2.7041015625, 0.69921875, -1.10205078125},
{-0.49755859375, 0.42333984375, 0.1044921875, -1.115234375, -0.7373046875 },
{-0.822265625, 1.375, -0.11181640625, 1.24560546875, -0.67822265625},
{ 1.32177734375, 0.24609375, 0.23388671875, 1.35888671875, -0.49267578125},
{ 1.22900390625, -0.72607421875, -0.779296875, 0.30322265625, 0.94189453125},
{-0.072265625, 1.0771484375, -2.09375, 0.630859375, -0.68408203125},
{-0.25732421875, 0.60693359375, -1.33349609375, 0.93212890625, 0.625 },
{ 1.04931640625, -0.73291015625, 1.80078125, 0.2978515625, -2.24169921875},
{ 1.6142578125, -1.64501953125, 0.91552734375, 1.775390625, -0.59423828125},
{ 1.2568359375, 1.22705078125, 0.70751953125, -1.5009765625, -2.43115234375},
{ 0.3974609375, 0.8916015625, -1.21923828125, 2.0673828125, -1.99072265625},
{ 0.8125, -0.107421875, 1.6689453125, 0.4892578125, 0.54443359375},
{ 0.38134765625, 0.8095703125, 1.91357421875, 2.9931640625, 1.533203125 },
{ 0.560546875, 1.98486328125, 0.740234375, 0.39794921875, 0.09716796875},
{ 0.58154296875, 1.21533203125, 1.25048828125, 1.18212890625, 1.19287109375},
{ 0.3759765625, -2.88818359375, 2.69287109375, -0.1796875, -1.56201171875},
{ 0.5810546875, 0.51123046875, 1.8271484375, 3.38232421875, -1.02001953125},
{ 0.142578125, 1.51318359375, 2.103515625, -0.3701171875, -1.19873046875},
{ 0.25537109375, 1.91455078125, 1.974609375, 0.6767578125, 0.04150390625},
{ 2.13232421875, 0.4912109375, -0.611328125, -0.7158203125, -0.67529296875},
{ 1.880859375, 0.77099609375, -0.03759765625, 1.0078125, 0.423828125 },
{ 2.49462890625, 1.42529296875, -0.0986328125, 0.17529296875, -0.24853515625},
{ 1.7822265625, 1.5654296875, 1.12451171875, 0.82666015625, 0.6328125 },
{ 1.41845703125, -1.90771484375, 0.11181640625, -0.583984375, -1.138671875 },
{ 2.91845703125, -1.75048828125, 0.39306640625, 1.86767578125, -1.5322265625 },
{ 1.8291015625, -0.2958984375, 0.02587890625, -0.13134765625, -1.61181640625},
{ 0.2958984375, 0.9853515625, -0.642578125, 1.984375, 0.1943359375 }
};
static const float table2[38]={
0.505699992, 0.524200022, 0.54339999, 0.563300014, 0.583953857, 0.60534668,
0.627502441, 0.650482178, 0.674316406, 0.699005127, 0.724578857, 0.75112915,
0.778625488, 0.807128906, 0.836669922, 0.86730957, 0.899078369, 0.932006836,
0.961486816, 0.982757568, 0.995635986, 1, 0.995819092, 0.983154297,
0.96206665, 0.932769775, 0.895507813, 0.850585938, 0.798400879, 0.739379883,
0.674072266, 0.602996826, 0.526763916, 0.446014404, 0.361480713, 0.273834229,
0.183868408, 0.0923461914
static const float syn_window[111]={
0.576690972, 0.580838025, 0.585013986, 0.589219987, 0.59345597, 0.597723007,
0.602020264, 0.606384277, 0.610748291, 0.615142822, 0.619598389, 0.624084473,
0.628570557, 0.633117676, 0.637695313, 0.642272949, 0.646911621, 0.651580811,
0.656280518, 0.66104126, 0.665802002, 0.670593262, 0.675445557, 0.680328369,
0.685241699, 0.690185547, 0.695159912, 0.700164795, 0.705230713, 0.710327148,
0.715454102, 0.720611572, 0.725830078, 0.731048584, 0.736328125, 0.741638184,
0.747009277, 0.752380371, 0.7578125, 0.763305664, 0.768798828, 0.774353027,
0.779937744, 0.785583496, 0.791229248, 0.796936035, 0.802703857, 0.808502197,
0.814331055, 0.820220947, 0.826141357, 0.832092285, 0.838104248, 0.844146729,
0.850250244, 0.856384277, 0.862548828, 0.868774414, 0.875061035, 0.881378174,
0.88772583, 0.894134521, 0.900604248, 0.907104492, 0.913635254, 0.920227051,
0.926879883, 0.933563232, 0.940307617, 0.94708252, 0.953918457, 0.96081543,
0.96774292, 0.974731445, 0.981781006, 0.988861084, 0.994842529, 0.998565674,
0.999969482, 0.99911499, 0.996002197, 0.990600586, 0.982910156, 0.973022461,
0.960876465, 0.946533203, 0.930053711, 0.911437988, 0.89074707, 0.868041992,
0.843322754, 0.816680908, 0.788208008, 0.757904053, 0.725891113, 0.692199707,
0.656921387, 0.620178223, 0.582000732, 0.542480469, 0.501739502, 0.459838867,
0.416900635, 0.373016357, 0.328277588, 0.282775879, 0.236663818, 0.189971924,
0.142852783, 0.0954284668,0.0477600098
};
static const float table1a[36]={
0.98828125, 0.976699829, 0.965254128, 0.953942537, 0.942763507, 0.931715488,
0.920796931, 0.910006344, 0.899342179, 0.888803005, 0.878387332, 0.868093729,
0.857920766, 0.847867012, 0.837931097, 0.828111589, 0.818407178, 0.808816493,
0.799338162, 0.789970934, 0.780713439, 0.771564424, 0.762522638, 0.753586829,
0.744755745, 0.736028135, 0.727402806, 0.718878567, 0.710454226, 0.702128589,
0.693900526, 0.685768902, 0.677732527, 0.669790328, 0.66194123, 0.654184103
static const float gain_window[38]={
0.505699992, 0.524200022, 0.54339999, 0.563300014, 0.583953857, 0.60534668,
0.627502441, 0.650482178, 0.674316406, 0.699005127, 0.724578857, 0.75112915,
0.778625488, 0.807128906, 0.836669922, 0.86730957, 0.899078369, 0.932006836,
0.961486816, 0.982757568, 0.995635986, 1, 0.995819092, 0.983154297,
0.96206665, 0.932769775, 0.895507813, 0.850585938, 0.798400879, 0.739379883,
0.674072266, 0.602996826, 0.526763916, 0.446014404, 0.361480713, 0.273834229,
0.183868408, 0.0923461914
};
static const float table2a[10]={
0.90625, 0.821289063, 0.74432373, 0.674499512, 0.61126709,
0.553955078, 0.50201416, 0.454956055, 0.41229248, 0.373657227
/** Synthesis bandwidth broadening table */
static const float syn_bw_tab[36]={
0.98828125, 0.976699829, 0.965254128, 0.953942537, 0.942763507, 0.931715488,
0.920796931, 0.910006344, 0.899342179, 0.888803005, 0.878387332, 0.868093729,
0.857920766, 0.847867012, 0.837931097, 0.828111589, 0.818407178, 0.808816493,
0.799338162, 0.789970934, 0.780713439, 0.771564424, 0.762522638, 0.753586829,
0.744755745, 0.736028135, 0.727402806, 0.718878567, 0.710454226, 0.702128589,
0.693900526, 0.685768902, 0.677732527, 0.669790328, 0.66194123, 0.654184103
};
#endif /* RA288TABLES_H */
/** Gain bandwidth broadening table */
static const float gain_bw_tab[10]={
0.90625, 0.821289063, 0.74432373, 0.674499512, 0.61126709,
0.553955078, 0.50201416, 0.454956055, 0.41229248, 0.373657227
};
#endif /* FFMPEG_RA288_H */
src/add-ons/media/plugins/avcodec/libavcodec/rangecoder.c
+152
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/*
* Range coder
* Copyright (c) 2004 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg 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 2.1 of the License, or (at your option) any later version.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file rangecoder.c
* Range coder.
* based upon
* "Range encoding: an algorithm for removing redundancy from a digitised
* message.
* G. N. N. Martin Presented in March 1979 to the Video &
* Data Recording Conference,
* IBM UK Scientific Center held in Southampton July 24-27 1979."
*
*/
#include <string.h>
#include "avcodec.h"
#include "rangecoder.h"
#include "bytestream.h"
void ff_init_range_encoder(RangeCoder *c, uint8_t *buf, int buf_size){
c->bytestream_start=
c->bytestream= buf;
c->bytestream_end= buf + buf_size;
c->low= 0;
c->range= 0xFF00;
c->outstanding_count= 0;
c->outstanding_byte= -1;
}
void ff_init_range_decoder(RangeCoder *c, const uint8_t *buf, int buf_size){
/* cast to avoid compiler warning */
ff_init_range_encoder(c, (uint8_t *) buf, buf_size);
c->low = bytestream_get_be16(&c->bytestream);
}
void ff_build_rac_states(RangeCoder *c, int factor, int max_p){
const int64_t one= 1LL<<32;
int64_t p;
int last_p8, p8, i;
memset(c->zero_state, 0, sizeof(c->zero_state));
memset(c-> one_state, 0, sizeof(c-> one_state));
last_p8= 0;
p= one/2;
for(i=0; i<128; i++){
p8= (256*p + one/2) >> 32; //FIXME try without the one
if(p8 <= last_p8) p8= last_p8+1;
if(last_p8 && last_p8<256 && p8<=max_p)
c->one_state[last_p8]= p8;
p+= ((one-p)*factor + one/2) >> 32;
last_p8= p8;
}
for(i=256-max_p; i<=max_p; i++){
if(c->one_state[i])
continue;
p= (i*one + 128) >> 8;
p+= ((one-p)*factor + one/2) >> 32;
p8= (256*p + one/2) >> 32; //FIXME try without the one
if(p8 <= i) p8= i+1;
if(p8 > max_p) p8= max_p;
c->one_state[ i]= p8;
}
for(i=1; i<255; i++)
c->zero_state[i]= 256-c->one_state[256-i];
}
/**
*
* @return the number of bytes written
*/
int ff_rac_terminate(RangeCoder *c){
c->range=0xFF;
c->low +=0xFF;
renorm_encoder(c);
c->range=0xFF;
renorm_encoder(c);
assert(c->low == 0);
assert(c->range >= 0x100);
return c->bytestream - c->bytestream_start;
}
#ifdef TEST
#define SIZE 10240
#undef random
int main(void){
RangeCoder c;
uint8_t b[9*SIZE];
uint8_t r[9*SIZE];
int i;
uint8_t state[10]= {0};
ff_init_range_encoder(&c, b, SIZE);
ff_build_rac_states(&c, 0.05*(1LL<<32), 128+64+32+16);
memset(state, 128, sizeof(state));
for(i=0; i<SIZE; i++){
r[i]= random()%7;
}
for(i=0; i<SIZE; i++){
START_TIMER
put_rac(&c, state, r[i]&1);
STOP_TIMER("put_rac")
}
ff_rac_terminate(&c);
ff_init_range_decoder(&c, b, SIZE);
memset(state, 128, sizeof(state));
for(i=0; i<SIZE; i++){
START_TIMER
if( (r[i]&1) != get_rac(&c, state) )
av_log(NULL, AV_LOG_DEBUG, "rac failure at %d\n", i);
STOP_TIMER("get_rac")
}
return 0;
}
#endif /* TEST */
src/add-ons/media/plugins/avcodec/libavcodec/rangecoder.h
+141
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/*
* Range coder
* Copyright (c) 2004 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg 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 2.1 of the License, or (at your option) any later version.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file rangecoder.h
* Range coder.
*/
#ifndef FFMPEG_RANGECODER_H
#define FFMPEG_RANGECODER_H
#include <stdint.h>
#include <assert.h>
#include "common.h"
typedef struct RangeCoder{
int low;
int range;
int outstanding_count;
int outstanding_byte;
uint8_t zero_state[256];
uint8_t one_state[256];
uint8_t *bytestream_start;
uint8_t *bytestream;
uint8_t *bytestream_end;
}RangeCoder;
void ff_init_range_encoder(RangeCoder *c, uint8_t *buf, int buf_size);
void ff_init_range_decoder(RangeCoder *c, const uint8_t *buf, int buf_size);
int ff_rac_terminate(RangeCoder *c);
void ff_build_rac_states(RangeCoder *c, int factor, int max_p);
static inline void renorm_encoder(RangeCoder *c){
//FIXME optimize
while(c->range < 0x100){
if(c->outstanding_byte < 0){
c->outstanding_byte= c->low>>8;
}else if(c->low <= 0xFF00){
*c->bytestream++ = c->outstanding_byte;
for(;c->outstanding_count; c->outstanding_count--)
*c->bytestream++ = 0xFF;
c->outstanding_byte= c->low>>8;
}else if(c->low >= 0x10000){
*c->bytestream++ = c->outstanding_byte + 1;
for(;c->outstanding_count; c->outstanding_count--)
*c->bytestream++ = 0x00;
c->outstanding_byte= (c->low>>8) & 0xFF;
}else{
c->outstanding_count++;
}
c->low = (c->low & 0xFF)<<8;
c->range <<= 8;
}
}
static inline int get_rac_count(RangeCoder *c){
int x= c->bytestream - c->bytestream_start + c->outstanding_count;
if(c->outstanding_byte >= 0)
x++;
return 8*x - av_log2(c->range);
}
static inline void put_rac(RangeCoder *c, uint8_t * const state, int bit){
int range1= (c->range * (*state)) >> 8;
assert(*state);
assert(range1 < c->range);
assert(range1 > 0);
if(!bit){
c->range -= range1;
*state= c->zero_state[*state];
}else{
c->low += c->range - range1;
c->range = range1;
*state= c->one_state[*state];
}
renorm_encoder(c);
}
static inline void refill(RangeCoder *c){
if(c->range < 0x100){
c->range <<= 8;
c->low <<= 8;
if(c->bytestream < c->bytestream_end)
c->low+= c->bytestream[0];
c->bytestream++;
}
}
static inline int get_rac(RangeCoder *c, uint8_t * const state){
int range1= (c->range * (*state)) >> 8;
int av_unused one_mask;
c->range -= range1;
#if 1
if(c->low < c->range){
*state= c->zero_state[*state];
refill(c);
return 0;
}else{
c->low -= c->range;
*state= c->one_state[*state];
c->range = range1;
refill(c);
return 1;
}
#else
one_mask= (c->range - c->low-1)>>31;
c->low -= c->range & one_mask;
c->range += (range1 - c->range) & one_mask;
*state= c->zero_state[(*state) + (256&one_mask)];
refill(c);
return one_mask&1;
#endif
}
#endif /* FFMPEG_RANGECODER_H */
src/add-ons/media/plugins/avcodec/libavcodec/ratecontrol.c
+446 -338
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src/add-ons/media/plugins/avcodec/libavcodec/ratecontrol.h
+105
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/*
* Ratecontrol
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
* Copyright (c) 2002-2004 Michael Niedermayer
*
* This file is part of FFmpeg.
*
* FFmpeg 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 2.1 of the License, or (at your option) any later version.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef FFMPEG_RATECONTROL_H
#define FFMPEG_RATECONTROL_H
/**
* @file ratecontrol.h
* ratecontrol header.
*/
#include <stdio.h>
#include <stdint.h>
#include "eval.h"
typedef struct Predictor{
double coeff;
double count;
double decay;
} Predictor;
typedef struct RateControlEntry{
int pict_type;
float qscale;
int mv_bits;
int i_tex_bits;
int p_tex_bits;
int misc_bits;
int header_bits;
uint64_t expected_bits;
int new_pict_type;
float new_qscale;
int mc_mb_var_sum;
int mb_var_sum;
int i_count;
int skip_count;
int f_code;
int b_code;
}RateControlEntry;
/**
* rate control context.
*/
typedef struct RateControlContext{
FILE *stats_file;
int num_entries; ///< number of RateControlEntries
RateControlEntry *entry;
double buffer_index; ///< amount of bits in the video/audio buffer
Predictor pred[5];
double short_term_qsum; ///< sum of recent qscales
double short_term_qcount; ///< count of recent qscales
double pass1_rc_eq_output_sum;///< sum of the output of the rc equation, this is used for normalization
double pass1_wanted_bits; ///< bits which should have been outputed by the pass1 code (including complexity init)
double last_qscale;
double last_qscale_for[5]; ///< last qscale for a specific pict type, used for max_diff & ipb factor stuff
int last_mc_mb_var_sum;
int last_mb_var_sum;
uint64_t i_cplx_sum[5];
uint64_t p_cplx_sum[5];
uint64_t mv_bits_sum[5];
uint64_t qscale_sum[5];
int frame_count[5];
int last_non_b_pict_type;
void *non_lavc_opaque; ///< context for non lavc rc code (for example xvid)
float dry_run_qscale; ///< for xvid rc
int last_picture_number; ///< for xvid rc
AVEvalExpr * rc_eq_eval;
}RateControlContext;
struct MpegEncContext;
/* rate control */
int ff_rate_control_init(struct MpegEncContext *s);
float ff_rate_estimate_qscale(struct MpegEncContext *s, int dry_run);
void ff_write_pass1_stats(struct MpegEncContext *s);
void ff_rate_control_uninit(struct MpegEncContext *s);
int ff_vbv_update(struct MpegEncContext *s, int frame_size);
void ff_get_2pass_fcode(struct MpegEncContext *s);
int ff_xvid_rate_control_init(struct MpegEncContext *s);
void ff_xvid_rate_control_uninit(struct MpegEncContext *s);
float ff_xvid_rate_estimate_qscale(struct MpegEncContext *s, int dry_run);
#endif /* FFMPEG_RATECONTROL_H */
src/add-ons/media/plugins/avcodec/libavcodec/raw.c
+28 -137
View File
@@ -2,43 +2,35 @@
* Raw Video Codec
* Copyright (c) 2001 Fabrice Bellard.
*
* This library is free software; you can redistribute it and/or
* This file is part of FFmpeg.
*
* FFmpeg 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.
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* FFmpeg 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
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file raw.c
* Raw Video Codec
*/
#include "avcodec.h"
#include "raw.h"
typedef struct RawVideoContext {
unsigned char * buffer; /* block of memory for holding one frame */
unsigned char * p; /* current position in buffer */
int length; /* number of bytes in buffer */
AVFrame pic; ///< AVCodecContext.coded_frame
} RawVideoContext;
typedef struct PixleFormatTag {
int pix_fmt;
unsigned int fourcc;
} PixelFormatTag;
const PixelFormatTag pixelFormatTags[] = {
const PixelFormatTag ff_raw_pixelFormatTags[] = {
{ PIX_FMT_YUV420P, MKTAG('I', '4', '2', '0') }, /* Planar formats */
{ PIX_FMT_YUV420P, MKTAG('I', 'Y', 'U', 'V') },
{ PIX_FMT_YUV420P, MKTAG('Y', 'V', '1', '2') },
{ PIX_FMT_YUV410P, MKTAG('Y', 'U', 'V', '9') },
{ PIX_FMT_YUV411P, MKTAG('Y', '4', '1', 'B') },
{ PIX_FMT_YUV422P, MKTAG('Y', '4', '2', 'B') },
@@ -46,131 +38,30 @@ const PixelFormatTag pixelFormatTags[] = {
{ PIX_FMT_GRAY8, MKTAG(' ', ' ', 'Y', '8') },
{ PIX_FMT_YUV422, MKTAG('Y', '4', '2', '2') }, /* Packed formats */
{ PIX_FMT_YUV422, MKTAG('U', 'Y', 'V', 'Y') },
{ PIX_FMT_YUYV422, MKTAG('Y', 'U', 'Y', '2') }, /* Packed formats */
{ PIX_FMT_YUYV422, MKTAG('Y', '4', '2', '2') },
{ PIX_FMT_UYVY422, MKTAG('U', 'Y', 'V', 'Y') },
{ PIX_FMT_UYVY422, MKTAG('H', 'D', 'Y', 'C') },
{ PIX_FMT_GRAY8, MKTAG('G', 'R', 'E', 'Y') },
{ PIX_FMT_RGB555, MKTAG('R', 'G', 'B', 15) },
{ PIX_FMT_BGR555, MKTAG('B', 'G', 'R', 15) },
{ PIX_FMT_RGB565, MKTAG('R', 'G', 'B', 16) },
{ PIX_FMT_BGR565, MKTAG('B', 'G', 'R', 16) },
/* quicktime */
{ PIX_FMT_UYVY422, MKTAG('2', 'v', 'u', 'y') },
{ PIX_FMT_UYVY422, MKTAG('A', 'V', 'U', 'I') }, /* FIXME merge both fields */
{ -1, 0 },
};
static int findPixelFormat(unsigned int fourcc)
unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat fmt)
{
const PixelFormatTag * tags = pixelFormatTags;
while (tags->pix_fmt >= 0) {
if (tags->fourcc == fourcc)
return tags->pix_fmt;
tags++;
}
return PIX_FMT_YUV420P;
}
static unsigned int findFourCC(int fmt)
{
const PixelFormatTag * tags = pixelFormatTags;
const PixelFormatTag * tags = ff_raw_pixelFormatTags;
while (tags->pix_fmt >= 0) {
if (tags->pix_fmt == fmt)
return tags->fourcc;
tags++;
return tags->fourcc;
tags++;
}
return 0;
}
/* RAW Decoder Implementation */
static int raw_init_decoder(AVCodecContext *avctx)
{
RawVideoContext *context = avctx->priv_data;
if (avctx->codec_tag)
avctx->pix_fmt = findPixelFormat(avctx->codec_tag);
context->length = avpicture_get_size(avctx->pix_fmt, avctx->width, avctx->height);
context->buffer = av_malloc(context->length);
context->p = context->buffer;
context->pic.pict_type = FF_I_TYPE;
context->pic.key_frame = 1;
avctx->coded_frame= &context->pic;
if (!context->buffer)
return -1;
return 0;
}
static int raw_decode(AVCodecContext *avctx,
void *data, int *data_size,
uint8_t *buf, int buf_size)
{
RawVideoContext *context = avctx->priv_data;
int bytesNeeded;
AVPicture * picture = (AVPicture *) data;
/* Early out without copy if packet size == frame size */
if (buf_size == context->length && context->p == context->buffer) {
avpicture_fill(picture, buf, avctx->pix_fmt, avctx->width, avctx->height);
*data_size = sizeof(AVPicture);
return buf_size;
}
bytesNeeded = context->length - (context->p - context->buffer);
if (buf_size < bytesNeeded) {
memcpy(context->p, buf, buf_size);
context->p += buf_size;
*data_size = 0;
return buf_size;
}
memcpy(context->p, buf, bytesNeeded);
context->p = context->buffer;
avpicture_fill(picture, context->buffer, avctx->pix_fmt, avctx->width, avctx->height);
*data_size = sizeof(AVPicture);
return bytesNeeded;
}
static int raw_close_decoder(AVCodecContext *avctx)
{
RawVideoContext *context = avctx->priv_data;
av_freep(&context->buffer);
return 0;
}
/* RAW Encoder Implementation */
static int raw_init_encoder(AVCodecContext *avctx)
{
avctx->coded_frame = (AVFrame *)avctx->priv_data;
avctx->coded_frame->pict_type = FF_I_TYPE;
avctx->coded_frame->key_frame = 1;
avctx->codec_tag = findFourCC(avctx->pix_fmt);
return 0;
}
static int raw_encode(AVCodecContext *avctx,
unsigned char *frame, int buf_size, void *data)
{
return avpicture_layout((AVPicture *)data, avctx->pix_fmt, avctx->width,
avctx->height, frame, buf_size);
}
AVCodec rawvideo_encoder = {
"rawvideo",
CODEC_TYPE_VIDEO,
CODEC_ID_RAWVIDEO,
sizeof(AVFrame),
raw_init_encoder,
raw_encode,
};
AVCodec rawvideo_decoder = {
"rawvideo",
CODEC_TYPE_VIDEO,
CODEC_ID_RAWVIDEO,
sizeof(RawVideoContext),
raw_init_decoder,
NULL,
raw_close_decoder,
raw_decode,
};
src/add-ons/media/plugins/avcodec/libavcodec/raw.h
+39
View File
@@ -0,0 +1,39 @@
/*
* Raw Video Codec
* Copyright (c) 2001 Fabrice Bellard.
*
* This file is part of FFmpeg.
*
* FFmpeg 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 2.1 of the License, or (at your option) any later version.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file raw.h
* Raw Video Codec
*/
#ifndef FFMPEG_RAW_H
#define FFMPEG_RAW_H
#include "avcodec.h"
typedef struct PixelFormatTag {
int pix_fmt;
unsigned int fourcc;
} PixelFormatTag;
extern const PixelFormatTag ff_raw_pixelFormatTags[];
#endif /* FFMPEG_RAW_H */
src/add-ons/media/plugins/avcodec/libavcodec/rawdec.c
+166
View File
@@ -0,0 +1,166 @@
/*
* Raw Video Decoder
* Copyright (c) 2001 Fabrice Bellard.
*
* This file is part of FFmpeg.
*
* FFmpeg 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 2.1 of the License, or (at your option) any later version.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file rawdec.c
* Raw Video Decoder
*/
#include "avcodec.h"
#include "raw.h"
typedef struct RawVideoContext {
unsigned char * buffer; /* block of memory for holding one frame */
int length; /* number of bytes in buffer */
AVFrame pic; ///< AVCodecContext.coded_frame
} RawVideoContext;
static const PixelFormatTag pixelFormatBpsAVI[] = {
{ PIX_FMT_PAL8, 4 },
{ PIX_FMT_PAL8, 8 },
{ PIX_FMT_RGB555, 15 },
{ PIX_FMT_RGB555, 16 },
{ PIX_FMT_BGR24, 24 },
{ PIX_FMT_RGB32, 32 },
{ -1, 0 },
};
static const PixelFormatTag pixelFormatBpsMOV[] = {
/* FIXME fix swscaler to support those */
/* http://developer.apple.com/documentation/QuickTime/QTFF/QTFFChap3/chapter_4_section_2.html */
{ PIX_FMT_PAL8, 4 },
{ PIX_FMT_PAL8, 8 },
{ PIX_FMT_BGR555, 16 },
{ PIX_FMT_RGB24, 24 },
{ PIX_FMT_BGR32_1, 32 },
{ -1, 0 },
};
static int findPixelFormat(const PixelFormatTag *tags, unsigned int fourcc)
{
while (tags->pix_fmt >= 0) {
if (tags->fourcc == fourcc)
return tags->pix_fmt;
tags++;
}
return PIX_FMT_YUV420P;
}
static av_cold int raw_init_decoder(AVCodecContext *avctx)
{
RawVideoContext *context = avctx->priv_data;
if (avctx->codec_tag == MKTAG('r','a','w',' '))
avctx->pix_fmt = findPixelFormat(pixelFormatBpsMOV, avctx->bits_per_sample);
else if (avctx->codec_tag)
avctx->pix_fmt = findPixelFormat(ff_raw_pixelFormatTags, avctx->codec_tag);
else if (avctx->bits_per_sample)
avctx->pix_fmt = findPixelFormat(pixelFormatBpsAVI, avctx->bits_per_sample);
context->length = avpicture_get_size(avctx->pix_fmt, avctx->width, avctx->height);
context->buffer = av_malloc(context->length);
context->pic.pict_type = FF_I_TYPE;
context->pic.key_frame = 1;
avctx->coded_frame= &context->pic;
if (!context->buffer)
return -1;
return 0;
}
static void flip(AVCodecContext *avctx, AVPicture * picture){
if(!avctx->codec_tag && avctx->bits_per_sample && picture->linesize[2]==0){
picture->data[0] += picture->linesize[0] * (avctx->height-1);
picture->linesize[0] *= -1;
}
}
static int raw_decode(AVCodecContext *avctx,
void *data, int *data_size,
const uint8_t *buf, int buf_size)
{
RawVideoContext *context = avctx->priv_data;
AVFrame * frame = (AVFrame *) data;
AVPicture * picture = (AVPicture *) data;
frame->interlaced_frame = avctx->coded_frame->interlaced_frame;
frame->top_field_first = avctx->coded_frame->top_field_first;
//4bpp raw in avi and mov (yes this is ugly ...)
if(avctx->bits_per_sample == 4 && avctx->pix_fmt==PIX_FMT_PAL8 &&
(!avctx->codec_tag || avctx->codec_tag == MKTAG('r','a','w',' '))){
int i;
for(i=256*2; i+1 < context->length>>1; i++){
context->buffer[2*i+0]= buf[i-256*2]>>4;
context->buffer[2*i+1]= buf[i-256*2]&15;
}
buf= context->buffer + 256*4;
buf_size= context->length - 256*4;
}
if(buf_size < context->length - (avctx->pix_fmt==PIX_FMT_PAL8 ? 256*4 : 0))
return -1;
avpicture_fill(picture, buf, avctx->pix_fmt, avctx->width, avctx->height);
if(avctx->pix_fmt==PIX_FMT_PAL8 && buf_size < context->length){
frame->data[1]= context->buffer;
}
if (avctx->palctrl && avctx->palctrl->palette_changed) {
memcpy(frame->data[1], avctx->palctrl->palette, AVPALETTE_SIZE);
avctx->palctrl->palette_changed = 0;
}
flip(avctx, picture);
if (avctx->codec_tag == MKTAG('Y', 'V', '1', '2'))
{
// swap fields
unsigned char *tmp = picture->data[1];
picture->data[1] = picture->data[2];
picture->data[2] = tmp;
}
*data_size = sizeof(AVPicture);
return buf_size;
}
static av_cold int raw_close_decoder(AVCodecContext *avctx)
{
RawVideoContext *context = avctx->priv_data;
av_freep(&context->buffer);
return 0;
}
AVCodec rawvideo_decoder = {
"rawvideo",
CODEC_TYPE_VIDEO,
CODEC_ID_RAWVIDEO,
sizeof(RawVideoContext),
raw_init_decoder,
NULL,
raw_close_decoder,
raw_decode,
.long_name = NULL_IF_CONFIG_SMALL("raw video"),
};
src/add-ons/media/plugins/avcodec/libavcodec/rawenc.c
+55
View File
@@ -0,0 +1,55 @@
/*
* Raw Video Encoder
* Copyright (c) 2001 Fabrice Bellard.
*
* This file is part of FFmpeg.
*
* FFmpeg 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 2.1 of the License, or (at your option) any later version.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file rawenc.c
* Raw Video Encoder
*/
#include "avcodec.h"
#include "raw.h"
static av_cold int raw_init_encoder(AVCodecContext *avctx)
{
avctx->coded_frame = (AVFrame *)avctx->priv_data;
avctx->coded_frame->pict_type = FF_I_TYPE;
avctx->coded_frame->key_frame = 1;
if(!avctx->codec_tag)
avctx->codec_tag = avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
return 0;
}
static int raw_encode(AVCodecContext *avctx,
unsigned char *frame, int buf_size, void *data)
{
return avpicture_layout((AVPicture *)data, avctx->pix_fmt, avctx->width,
avctx->height, frame, buf_size);
}
AVCodec rawvideo_encoder = {
"rawvideo",
CODEC_TYPE_VIDEO,
CODEC_ID_RAWVIDEO,
sizeof(AVFrame),
raw_init_encoder,
raw_encode,
.long_name = NULL_IF_CONFIG_SMALL("raw video"),
};