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finally works now 

Originally committed as revision 1966 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Nick Kurshev 2003-06-17 07:22:31 +00:00
parent 971eb237b7
commit 860208a400
1 changed files with 49 additions and 49 deletions
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98
libavcodec/ra288.c
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@ -24,7 +24,7 @@ typedef struct {
float output[40];
float pr1[36];
float pr2[10];
int phase, phasep;
int phase, phasep;
float st1a[111],st1b[37],st1[37];
float st2a[38],st2b[11],st2[11];
@ -231,12 +231,12 @@ static void unpack(unsigned short *tgt, unsigned char *src, int len)
{
int x,y,z;
int n,temp;
int buffer[38];
int buffer[len];
for (x=0;x<len;tgt[x++]=0)
buffer[x]=9+(x&1);
for (x=y=z=0;x<38;x++) {
for (x=y=z=0;x<len/*was 38*/;x++) {
n=buffer[y]-z;
temp=src[x];
if (n<8) temp&=255>>(8-n);
@ -386,69 +386,69 @@ static void prodsum(float *tgt, float *src, int len, int n)
}
}
#ifndef max
#define max(a,b) ((a)>(b)?(a):(b))
#endif
void * decode_block(AVCodecContext * avctx, unsigned char *in, signed short int *out)
{
int x,y;
Real288_internal *glob=avctx->priv_data;
int cfs=((short*)(avctx->extradata))[3]; /* coded frame size 38 */
unsigned short int buffer[cfs];
unpack(buffer,in,cfs);
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)
{
int x,y,z,bret;
unsigned short int buffer[buf_size];
unsigned char b[buf_size],*bp;
void *datao;
Real288_internal *glob=avctx->priv_data;
if(avctx->extradata_size>=6)
if(avctx->extradata_size>=6)
{
int w=avctx->block_align;
int h=((short*)(avctx->extradata))[1];
int cfs=((short*)(avctx->extradata))[3]; /* coded frame size */
//((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 z,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;
unsigned char tb[h*w], *ptb;
if(buf_size<w*h)
{
fprintf(stderr,"ffra288: warning! Context was not interleaved [%d<%d]\n",buf_size,w*h);
goto no_interleave;
fprintf(stderr,"ffra288: Error! Input buffer is too small [%d<%d]\n",buf_size,w*h);
return 0;
}
bp = buf;
datao = data;
ptb = buf;
/* Phase 0: deinterleave */
for (j = 0; j < h; j++)
for (i = 0; i < h/2; i++)
{
memcpy(&b[i*2*w+j*cfs], bp, cfs);
bp += cfs;
if(bp-buf>buf_size)
{
fprintf(stderr,"ffra288: warning! Context was partly interleaved [%d<%d]\n",buf_size,w*h);
break;
}
}
bret=bp-buf;
bp = b;
{
memcpy(&tb[i*2*w+j*cfs],ptb,cfs);
ptb += cfs;
}
/* Phase 1: decode */
bret = ptb-buf;
for(z=0;z<bret;z+=cfs) { decode_block(avctx,&tb[z],(signed short *)data); data += 320; }
*data_size = data - datao;
return bret;
}
else
{
fprintf(stderr,"ffra288: warning! Context was not interleaved [%d<%d]\n",avctx->extradata_size,6);
no_interleave:
bret=buf_size;
bp = buf;
}
datao = data;
z=0;
while(z<bret)
{
unpack(buffer,&bp[z],32);
for (x=0;x<32;x++)
{
glob->phasep=(glob->phase=x&7)*5;
decode(glob,buffer[x]);
for (y=0;y<5;*(((int16_t *)data)++)=8*glob->output[glob->phasep+(y++)]);
if (glob->phase==3) update(glob);
}
z+=32;
fprintf(stderr,"ffra288: Error: need extra data!!!\n");
return 0;
}
*data_size = data - datao;
return bret;
}
AVCodec ra_288_decoder =