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Code Issues Releases Activity

Do not copy tables to a context var, use them directly

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Originally committed as revision 13164 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Vitor Sessak 2008-05-15 18:36:12 +00:00
parent bd0d10c2f1
commit 4aa485a3f6
1 changed files with 8 additions and 15 deletions
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23
libavcodec/ra144.c
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@ -48,9 +48,6 @@ typedef struct {
unsigned short int buffer_2[148];
unsigned short *sptr;
signed short wavtable1[2304];
unsigned short wavtable2[2304];
} Real144_internal;
static int ra144_decode_init(AVCodecContext * avctx)
@ -62,9 +59,6 @@ static int ra144_decode_init(AVCodecContext * avctx)
glob->swapbuf1alt = glob->swapbuffers[2];
glob->swapbuf2alt = glob->swapbuffers[3];
memcpy(glob->wavtable1, wavtable1, sizeof(wavtable1));
memcpy(glob->wavtable2, wavtable2, sizeof(wavtable2));
return 0;
}
@ -183,11 +177,11 @@ static int irms(short *data, int factor)
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;
int a, b, c, i;
const short *ptr, *ptr2;
ptr = glob->wavtable1 + n * 9;
ptr2 = glob->wavtable2 + n * 9;
ptr = wavtable1 + n * 9;
ptr2 = wavtable2 + n * 9;
if (f != 0)
a = ((*ptr) * m1) >> ((*ptr2) + 1);
@ -200,14 +194,13 @@ static void add_wav(Real144_internal *glob, int n, int f, int m1, int m2,
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;
for (i=0; i < BLOCKSIZE; i++)
dest[i] = ((*(s1++)) * a + (*(s2++)) * b + (*(s3++)) * c) >> 12;
else
while (ptr < ptr2)
*(ptr++) = ((*(s2++)) * b + (*(s3++)) * c) >> 12;
for (i=0; i < BLOCKSIZE; i++)
dest[i] = ((*(s2++)) * b + (*(s3++)) * c) >> 12;
}