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Copy 4 pointers to avid dozends of ptr dereferences.

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Originally committed as revision 13815 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2008-06-19 10:49:30 +00:00
parent fc234250b4
commit 05c9f3516c
1 changed files with 11 additions and 11 deletions
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22
libavcodec/g726.c
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@ -71,7 +71,7 @@ typedef struct G726Tables {
} G726Tables;
typedef struct G726Context {
const G726Tables* tbls; /**< static tables needed for computation */
G726Tables tbls; /**< static tables needed for computation */
Float11 sr[2]; /**< prev. reconstructed samples */
Float11 dq[6]; /**< prev. difference */
@ -160,12 +160,12 @@ static inline uint8_t quant(G726Context* c, int d)
exp = av_log2_16bit(d);
dln = ((exp<<7) + (((d<<7)>>exp)&0x7f)) - (c->y>>2);
while (c->tbls->quant[i] < INT_MAX && c->tbls->quant[i] < dln)
while (c->tbls.quant[i] < INT_MAX && c->tbls.quant[i] < dln)
++i;
if (sign)
i = ~i;
if (c->tbls->bits != 2 && i == 0) /* I'm not sure this is a good idea */
if (c->tbls.bits != 2 && i == 0) /* I'm not sure this is a good idea */
i = 0xff;
return i;
@ -178,7 +178,7 @@ static inline int16_t inverse_quant(G726Context* c, int i)
{
int dql, dex, dqt;
dql = c->tbls->iquant[i] + (c->y >> 2);
dql = c->tbls.iquant[i] + (c->y >> 2);
dex = (dql>>7) & 0xf; /* 4bit exponent */
dqt = (1<<7) + (dql & 0x7f); /* log2 -> linear */
return (dql < 0) ? 0 : ((dqt<<dex) >> 7);
@ -188,7 +188,7 @@ static int16_t g726_decode(G726Context* c, int I)
{
int dq, re_signal, pk0, fa1, i, tr, ylint, ylfrac, thr2, al, dq0;
Float11 f;
int I_sig= I >> (c->tbls->bits - 1);
int I_sig= I >> (c->tbls.bits - 1);
dq = inverse_quant(c, I);
@ -236,8 +236,8 @@ static int16_t g726_decode(G726Context* c, int I)
c->td = c->a[1] < -11776;
/* Update Ap */
c->dms += ((c->tbls->F[I]<<9) - c->dms) >> 5;
c->dml += ((c->tbls->F[I]<<11) - c->dml) >> 7;
c->dms += ((c->tbls.F[I]<<9) - c->dms) >> 5;
c->dml += ((c->tbls.F[I]<<11) - c->dml) >> 7;
if (tr)
c->ap = 256;
else if (c->y > 1535 && !c->td && abs((c->dms << 2) - c->dml) < (c->dml >> 3))
@ -246,7 +246,7 @@ static int16_t g726_decode(G726Context* c, int I)
c->ap += (0x200 - c->ap) >> 4;
/* Update Yu and Yl */
c->yu = av_clip(c->y + c->tbls->W[I] + ((-c->y)>>5), 544, 5120);
c->yu = av_clip(c->y + c->tbls.W[I] + ((-c->y)>>5), 544, 5120);
c->yl += c->yu + ((-c->yl)>>6);
/* Next iteration for Y */
@ -269,7 +269,7 @@ static av_cold int g726_reset(G726Context* c, int index)
{
int i;
c->tbls = &G726Tables_pool[index];
c->tbls = G726Tables_pool[index];
for (i=0; i<2; i++) {
c->sr[i].mant = 1<<5;
c->pk[i] = 1;
@ -290,7 +290,7 @@ static int16_t g726_encode(G726Context* c, int16_t sig)
{
uint8_t i;
i = quant(c, sig/4 - c->se) & ((1<<c->tbls->bits) - 1);
i = quant(c, sig/4 - c->se) & ((1<<c->tbls.bits) - 1);
g726_decode(c, i);
return i;
}
@ -316,7 +316,7 @@ static av_cold int g726_init(AVCodecContext * avctx)
return -1;
}
g726_reset(c, index);
c->code_size = c->tbls->bits;
c->code_size = c->tbls.bits;
avctx->coded_frame = avcodec_alloc_frame();
if (!avctx->coded_frame)