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author | Michael Niedermayer <michaelni@gmx.at> | 2008-06-19 10:49:30 +0000 |
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committer | Michael Niedermayer <michaelni@gmx.at> | 2008-06-19 10:49:30 +0000 |
commit | 05c9f3516ccf931f9b9591978546e6daa923922a (patch) | |
tree | 486be10f69c9522edcba5361d7d8266f02d7f5aa | |
parent | fc234250b400045e883825a9c15f7ecdb987e1e0 (diff) | |
download | ffmpeg-05c9f3516ccf931f9b9591978546e6daa923922a.tar.gz |
Copy 4 pointers to avid dozends of ptr dereferences.
Originally committed as revision 13815 to svn://svn.ffmpeg.org/ffmpeg/trunk
-rw-r--r-- | libavcodec/g726.c | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/libavcodec/g726.c b/libavcodec/g726.c index efe6152c06..2881c7b1bc 100644 --- a/libavcodec/g726.c +++ b/libavcodec/g726.c @@ -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) |