mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-09-07 00:20:09 +02:00
cosmetics: Reindent file, patch by Vitor Sessak, vitor1001 gmail com,
some further prettyprinting by myself. Originally committed as revision 13105 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Vitor Sessak
Diego Biurrun
parent
f211662c7c
commit
47eb818713
@ -35,393 +35,458 @@
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/* internal globals */
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typedef struct {
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unsigned int resetflag, val, oldval;
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unsigned int unpacked[28]; /* buffer for unpacked input */
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unsigned int *iptr; /* pointer to current input (from unpacked) */
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unsigned int gval;
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unsigned short *gsp;
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unsigned int gbuf1[8];
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unsigned short gbuf2[120];
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signed short output_buffer[40];
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unsigned int *decptr; /* decoder ptr */
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signed short *decsp;
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unsigned int resetflag, val, oldval;
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unsigned int unpacked[28]; /* buffer for unpacked input */
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unsigned int *iptr; /* pointer to current input (from unpacked) */
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unsigned int gval;
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unsigned short *gsp;
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unsigned int gbuf1[8];
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unsigned short gbuf2[120];
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signed short output_buffer[40];
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unsigned int *decptr; /* decoder ptr */
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signed short *decsp;
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/* the swapped buffers */
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unsigned int swapb1a[10];
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unsigned int swapb2a[10];
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unsigned int swapb1b[10];
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unsigned int swapb2b[10];
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unsigned int *swapbuf1;
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unsigned int *swapbuf2;
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unsigned int *swapbuf1alt;
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unsigned int *swapbuf2alt;
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/* the swapped buffers */
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unsigned int swapb1a[10];
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unsigned int swapb2a[10];
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unsigned int swapb1b[10];
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unsigned int swapb2b[10];
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unsigned int *swapbuf1;
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unsigned int *swapbuf2;
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unsigned int *swapbuf1alt;
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unsigned int *swapbuf2alt;
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unsigned int buffer[5];
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unsigned short int buffer_2[148];
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unsigned short int buffer_a[40];
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unsigned short int buffer_b[40];
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unsigned short int buffer_c[40];
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unsigned short int buffer_d[40];
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unsigned int buffer[5];
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unsigned short int buffer_2[148];
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unsigned short int buffer_a[40];
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unsigned short int buffer_b[40];
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unsigned short int buffer_c[40];
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unsigned short int buffer_d[40];
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unsigned short int work[50];
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unsigned short *sptr;
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unsigned short int work[50];
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unsigned short *sptr;
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int buffer1[10];
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int buffer2[10];
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int buffer1[10];
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int buffer2[10];
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signed short wavtable1[2304];
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unsigned short wavtable2[2304];
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signed short wavtable1[2304];
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unsigned short wavtable2[2304];
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} Real144_internal;
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static int ra144_decode_init(AVCodecContext * avctx)
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{
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Real144_internal *glob=avctx->priv_data;
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Real144_internal *glob = avctx->priv_data;
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memset(glob,0,sizeof(Real144_internal));
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glob->resetflag=1;
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glob->swapbuf1=glob->swapb1a;
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glob->swapbuf2=glob->swapb2a;
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glob->swapbuf1alt=glob->swapb1b;
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glob->swapbuf2alt=glob->swapb2b;
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memset(glob, 0, sizeof(Real144_internal));
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glob->resetflag = 1;
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glob->swapbuf1 = glob->swapb1a;
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glob->swapbuf2 = glob->swapb2a;
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glob->swapbuf1alt = glob->swapb1b;
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glob->swapbuf2alt = glob->swapb2b;
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memcpy(glob->wavtable1,wavtable1,sizeof(wavtable1));
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memcpy(glob->wavtable2,wavtable2,sizeof(wavtable2));
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memcpy(glob->wavtable1, wavtable1, sizeof(wavtable1));
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memcpy(glob->wavtable2, wavtable2, sizeof(wavtable2));
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return 0;
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return 0;
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}
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static void final(Real144_internal *glob, short *i1, short *i2, void *out, int *statbuf, int len);
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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);
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static int irms(short *data, int factor);
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static void rotate_block(short *source, short *target, int offset);
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/* lookup square roots in table */
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static int t_sqrt(unsigned int x)
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{
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int s=0;
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while (x>0xfff) { s++; x=x>>2; }
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return (sqrt_table[x]<<s)<<2;
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int s = 0;
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while (x > 0xfff) {
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s++;
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x = x >> 2;
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}
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return (sqrt_table[x] << s) << 2;
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}
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/* do 'voice' */
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static void do_voice(int *a1, int *a2)
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{
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int buffer[10];
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int *b1,*b2;
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int x,y;
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int *ptr,*tmp;
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int buffer[10];
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int *b1, *b2;
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int x, y;
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int *ptr, *tmp;
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b1=buffer;
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b2=a2;
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b1 = buffer;
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b2 = a2;
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for (x=0;x<10;x++) {
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b1[x]=(*a1)<<4;
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for (x=0; x < 10; x++) {
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b1[x] = (*a1) << 4;
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if(x>0) {
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ptr=b2+x;
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for (y=0;y<=x-1;y++)
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b1[y]=(((*a1)*(*(--ptr)))>>12)+b2[y];
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if(x > 0) {
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ptr = b2 + x;
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for (y=0; y <= x - 1; y++)
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b1[y] = (((*a1) * (*(--ptr))) >> 12) + b2[y];
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}
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tmp = b1;
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b1 = b2;
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b2 = tmp;
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a1++;
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}
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tmp=b1;
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b1=b2;
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b2=tmp;
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a1++;
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}
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ptr=a2+10;
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while (ptr>a2) (*a2++)>>=4;
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ptr = a2 + 10;
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while (ptr > a2)
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(*a2++) >>= 4;
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}
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/* do quarter-block output */
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static void do_output_subblock(Real144_internal *glob, unsigned int x)
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{
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int a,b,c,d,e,f,g;
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int a, b, c, d, e, f, g;
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if (x==1) memset(glob->buffer,0,20);
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if ((*glob->iptr)==0) a=0;
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else a=(*glob->iptr)+HALFBLOCK-1;
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glob->iptr++;
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b=*(glob->iptr++);
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c=*(glob->iptr++);
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d=*(glob->iptr++);
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if (a) rotate_block(glob->buffer_2,glob->buffer_a,a);
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memcpy(glob->buffer_b,etable1+b*BLOCKSIZE,BLOCKSIZE*2);
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e=((ftable1[b]>>4)*glob->gval)>>8;
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memcpy(glob->buffer_c,etable2+c*BLOCKSIZE,BLOCKSIZE*2);
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f=((ftable2[c]>>4)*glob->gval)>>8;
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if (a) g=irms(glob->buffer_a,glob->gval)>>12;
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else g=0;
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add_wav(glob,d,a,g,e,f,glob->buffer_a,glob->buffer_b,glob->buffer_c,glob->buffer_d);
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memmove(glob->buffer_2,glob->buffer_2+BLOCKSIZE,(BUFFERSIZE-BLOCKSIZE)*2);
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memcpy(glob->buffer_2+BUFFERSIZE-BLOCKSIZE,glob->buffer_d,BLOCKSIZE*2);
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final(glob,glob->gsp,glob->buffer_d,glob->output_buffer,glob->buffer,BLOCKSIZE);
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if (x == 1)
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memset(glob->buffer, 0, 20);
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if ((*glob->iptr) == 0)
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a = 0;
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else
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a = (*glob->iptr) + HALFBLOCK - 1;
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glob->iptr++;
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b = *(glob->iptr++);
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c = *(glob->iptr++);
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d = *(glob->iptr++);
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if (a)
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rotate_block(glob->buffer_2, glob->buffer_a, a);
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memcpy(glob->buffer_b, etable1 + b * BLOCKSIZE, BLOCKSIZE * 2);
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e = ((ftable1[b] >> 4) *glob->gval) >> 8;
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memcpy(glob->buffer_c, etable2 + c * BLOCKSIZE, BLOCKSIZE * 2);
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f=((ftable2[c] >> 4) *glob->gval) >> 8;
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if (a)
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g = irms(glob->buffer_a, glob->gval) >> 12;
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else
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g = 0;
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add_wav(glob, d, a, g, e, f, glob->buffer_a, glob->buffer_b,
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glob->buffer_c, glob->buffer_d);
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memmove(glob->buffer_2, glob->buffer_2 + BLOCKSIZE, (BUFFERSIZE - BLOCKSIZE) * 2);
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memcpy(glob->buffer_2 + BUFFERSIZE - BLOCKSIZE, glob->buffer_d, BLOCKSIZE * 2);
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final(glob,glob->gsp, glob->buffer_d, glob->output_buffer, glob->buffer,
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BLOCKSIZE);
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}
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/* rotate block */
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static void rotate_block(short *source, short *target, int offset)
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{
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short *end;
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short *ptr1;
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short *ptr2;
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short *ptr3;
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ptr2=source+BUFFERSIZE;
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ptr3=ptr1=ptr2-offset;
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end=target+BLOCKSIZE;
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while (target<end) {
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*(target++)=*(ptr3++);
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if (ptr3==ptr2) ptr3=ptr1;
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}
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short *end;
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short *ptr1;
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short *ptr2;
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short *ptr3;
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ptr2 = source + BUFFERSIZE;
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ptr3 = ptr1 = ptr2 - offset;
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end = target + BLOCKSIZE;
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while (target < end) {
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*(target++) = *(ptr3++);
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if (ptr3 == ptr2)
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ptr3 = ptr1;
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}
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}
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/* inverse root mean square */
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static int irms(short *data, int factor)
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{
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short *p1,*p2;
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unsigned int sum;
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p2=(p1=data)+BLOCKSIZE;
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for (sum=0;p2>p1;p1++) sum+=(*p1)*(*p1);
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if (sum==0) return 0; /* OOPS - division by zero */
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return (0x20000000/(t_sqrt(sum)>>8))*factor;
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short *p1, *p2;
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unsigned int sum;
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p2 = (p1 = data) + BLOCKSIZE;
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for (sum=0; p2 > p1; p1++)
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sum += (*p1) * (*p1);
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if (sum == 0)
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return 0; /* OOPS - division by zero */
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return (0x20000000 / (t_sqrt(sum) >> 8)) * factor;
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}
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/* multiply/add wavetable */
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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)
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static void add_wav(Real144_internal *glob, int n, int f, int m1, int m2,
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int m3, short *s1, short *s2, short *s3, short *dest)
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{
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int a,b,c;
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short *ptr,*ptr2;
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int a, b, c;
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short *ptr, *ptr2;
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ptr=glob->wavtable1+n*9;
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ptr2=glob->wavtable2+n*9;
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if (f!=0) {
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a=((*ptr)*m1)>>((*ptr2)+1);
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} else {
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a=0;
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}
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ptr++;ptr2++;
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b=((*ptr)*m2)>>((*ptr2)+1);
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ptr++;ptr2++;
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c=((*ptr)*m3)>>((*ptr2)+1);
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ptr2=(ptr=dest)+BLOCKSIZE;
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if (f!=0)
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while (ptr<ptr2)
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*(ptr++)=((*(s1++))*a+(*(s2++))*b+(*(s3++))*c)>>12;
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else
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while (ptr<ptr2)
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*(ptr++)=((*(s2++))*b+(*(s3++))*c)>>12;
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ptr = glob->wavtable1 + n * 9;
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ptr2 = glob->wavtable2 + n * 9;
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if (f != 0)
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a = ((*ptr) * m1) >> ((*ptr2) + 1);
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else
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a = 0;
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ptr++;
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ptr2++;
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b = ((*ptr) * m2) >> ((*ptr2) + 1);
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ptr++;
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ptr2++;
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c = ((*ptr) * m3) >> ((*ptr2) + 1);
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ptr2 = (ptr = dest) + BLOCKSIZE;
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if (f != 0)
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while (ptr < ptr2)
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*(ptr++) = ((*(s1++)) * a + (*(s2++)) * b + (*(s3++)) * c) >> 12;
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else
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while (ptr < ptr2)
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*(ptr++) = ((*(s2++)) * b + (*(s3++)) * c) >> 12;
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}
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static void final(Real144_internal *glob, short *i1, short *i2, void *out, int *statbuf, int len)
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static void final(Real144_internal *glob, short *i1, short *i2, void *out,
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int *statbuf, int len)
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{
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int x,sum;
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int buffer[10];
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short *ptr;
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short *ptr2;
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int x, sum;
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int buffer[10];
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short *ptr;
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short *ptr2;
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memcpy(glob->work,statbuf,20);
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memcpy(glob->work+10,i2,len*2);
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memcpy(glob->work, statbuf,20);
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memcpy(glob->work + 10, i2, len * 2);
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buffer[9]=i1[0];
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buffer[8]=i1[1];
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buffer[7]=i1[2];
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buffer[6]=i1[3];
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buffer[5]=i1[4];
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buffer[4]=i1[5];
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buffer[3]=i1[6];
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buffer[2]=i1[7];
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buffer[1]=i1[8];
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buffer[0]=i1[9];
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buffer[9] = i1[0];
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buffer[8] = i1[1];
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buffer[7] = i1[2];
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buffer[6] = i1[3];
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buffer[5] = i1[4];
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buffer[4] = i1[5];
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buffer[3] = i1[6];
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buffer[2] = i1[7];
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buffer[1] = i1[8];
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buffer[0] = i1[9];
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ptr2=(ptr=glob->work)+len;
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while (ptr<ptr2) {
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for(sum=0,x=0;x<=9;x++)
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sum+=buffer[x]*(ptr[x]);
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sum=sum>>12;
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x=ptr[10]-sum;
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if (x<-32768 || x>32767)
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{
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memset(out,0,len*2);
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memset(statbuf,0,20);
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return;
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ptr2 = (ptr = glob->work) + len;
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while (ptr < ptr2) {
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for(sum=0, x=0; x<=9; x++)
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sum += buffer[x] * (ptr[x]);
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sum = sum >> 12;
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x = ptr[10] - sum;
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if (x<-32768 || x>32767) {
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memset(out, 0, len * 2);
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memset(statbuf, 0, 20);
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return;
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}
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ptr[10] = x;
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ptr++;
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}
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ptr[10]=x;
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ptr++;
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}
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memcpy(out,ptr+10-len,len*2);
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memcpy(statbuf,ptr,20);
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memcpy(out, ptr+10 - len, len * 2);
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memcpy(statbuf, ptr, 20);
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}
|
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/* Decode 20-byte input */
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static void unpack_input(const unsigned char *input, unsigned int *output)
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{
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unsigned int outbuffer[28];
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unsigned short inbuffer[10];
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unsigned int x;
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unsigned int *ptr;
|
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unsigned int outbuffer[28];
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unsigned short inbuffer[10];
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unsigned int x;
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unsigned int *ptr;
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/* fix endianness */
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for (x=0;x<20;x+=2)
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inbuffer[x/2]=(input[x]<<8)+input[x+1];
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/* fix endianness */
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for (x=0; x<20; x+=2)
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inbuffer[x/2] = (input[x] << 8) + input[x+1];
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/* unpack */
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ptr=outbuffer;
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*(ptr++)=27;
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*(ptr++)=(inbuffer[0]>>10)&0x3f;
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*(ptr++)=(inbuffer[0]>>5)&0x1f;
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*(ptr++)=inbuffer[0]&0x1f;
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*(ptr++)=(inbuffer[1]>>12)&0xf;
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*(ptr++)=(inbuffer[1]>>8)&0xf;
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*(ptr++)=(inbuffer[1]>>5)&7;
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*(ptr++)=(inbuffer[1]>>2)&7;
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*(ptr++)=((inbuffer[1]<<1)&6)|((inbuffer[2]>>15)&1);
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*(ptr++)=(inbuffer[2]>>12)&7;
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*(ptr++)=(inbuffer[2]>>10)&3;
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*(ptr++)=(inbuffer[2]>>5)&0x1f;
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*(ptr++)=((inbuffer[2]<<2)&0x7c)|((inbuffer[3]>>14)&3);
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*(ptr++)=(inbuffer[3]>>6)&0xff;
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*(ptr++)=((inbuffer[3]<<1)&0x7e)|((inbuffer[4]>>15)&1);
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*(ptr++)=(inbuffer[4]>>8)&0x7f;
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*(ptr++)=(inbuffer[4]>>1)&0x7f;
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*(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;
|
||||
/* 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];
|
||||
}
|
||||
*(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;
|
||||
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 = 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++;
|
||||
}
|
||||
c++;
|
||||
}
|
||||
if (res>0) res=t_sqrt(res);
|
||||
|
||||
res>>=(b+10);
|
||||
res=(res*f)>>10;
|
||||
return res;
|
||||
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;
|
||||
short *ptr,*end;
|
||||
|
||||
*(glob->decptr++)=rms(data,f);
|
||||
glob->decptr++;
|
||||
end=(ptr=glob->decsp)+(n*10);
|
||||
while (ptr<end) *(ptr++)=*(inp++);
|
||||
*(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;
|
||||
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++);
|
||||
retval = 0;
|
||||
bp1 = glob->buffer1;
|
||||
bp2 = glob->buffer2;
|
||||
ptr2 = (ptr3 = glob->buffer2) + 9;
|
||||
sptr = in;
|
||||
|
||||
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;
|
||||
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)
|
||||
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;
|
||||
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;
|
||||
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) */
|
||||
@ -429,74 +494,75 @@ static int ra144_decode_frame(AVCodecContext * avctx,
|
||||
void *vdata, int *data_size,
|
||||
const uint8_t * buf, int buf_size)
|
||||
{
|
||||
unsigned int a,b,c;
|
||||
signed short *shptr;
|
||||
unsigned int *lptr,*temp;
|
||||
const short **dptr;
|
||||
int16_t *datao;
|
||||
int16_t *data = vdata;
|
||||
Real144_internal *glob=avctx->priv_data;
|
||||
unsigned int a, b, c;
|
||||
signed short *shptr;
|
||||
unsigned int *lptr, *temp;
|
||||
const short **dptr;
|
||||
int16_t *datao;
|
||||
int16_t *data = vdata;
|
||||
Real144_internal *glob = avctx->priv_data;
|
||||
|
||||
if(buf_size==0)
|
||||
return 0;
|
||||
if(buf_size == 0)
|
||||
return 0;
|
||||
|
||||
datao = data;
|
||||
unpack_input(buf,glob->unpacked);
|
||||
datao = data;
|
||||
unpack_input(buf, glob->unpacked);
|
||||
|
||||
glob->iptr=glob->unpacked;
|
||||
glob->val=decodetable[0][(*(glob->iptr++))<<1];
|
||||
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];
|
||||
dptr = decodetable + 1;
|
||||
lptr = glob->swapbuf1;
|
||||
|
||||
do_voice(glob->swapbuf1,glob->swapbuf2);
|
||||
while (lptr<glob->swapbuf1 + 10)
|
||||
*(lptr++) = (*(dptr++))[(*(glob->iptr++)) << 1];
|
||||
|
||||
a=t_sqrt(glob->val*glob->oldval)>>12;
|
||||
do_voice(glob->swapbuf1, glob->swapbuf2);
|
||||
|
||||
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);
|
||||
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 {
|
||||
dec2(glob,glob->swapbuf1alt,glob->swapbuf2alt,3,a,glob->swapbuf2,c);
|
||||
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);
|
||||
}
|
||||
}
|
||||
}
|
||||
} 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;
|
||||
/* 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)
|
||||
*data++=av_clip_int16(*(shptr++)<<2);
|
||||
b+=30;
|
||||
}
|
||||
shptr = glob->output_buffer;
|
||||
while (shptr < glob->output_buffer + BLOCKSIZE)
|
||||
*data++ = av_clip_int16(*(shptr++) << 2);
|
||||
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)*sizeof(*data);
|
||||
return 20;
|
||||
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)*sizeof(*data);
|
||||
return 20;
|
||||
}
|
||||
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user