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Make add_wav() receive a vector instead of three integers

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Originally committed as revision 13386 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Vitor Sessak 2008-05-25 16:27:33 +00:00
parent 93a2c8c14f
commit d6ff684b12
1 changed files with 13 additions and 20 deletions
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33
libavcodec/ra144.c
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@ -118,25 +118,18 @@ static int irms(const short *data, int factor)
}
/* multiply/add wavetable */
static void add_wav(int n, int f, int m1, int m2, int m3, const short *s1,
static void add_wav(int n, int f, int *m, const short *s1,
const int8_t *s2, const int8_t *s3, short *dest)
{
int a = 0;
int b, c, i;
const int16_t *ptr;
const uint8_t *ptr2;
int i;
int v[3];
ptr = wavtable1[n];
ptr2 = wavtable2[n];
if (f)
a = (ptr[0] * m1) >> (ptr2[0] + 1);
b = (ptr[1] * m2) >> (ptr2[1] + 1);
c = (ptr[2] * m3) >> (ptr2[2] + 1);
v[0] = 0;
for (i=!f; i<3; i++)
v[i] = (wavtable1[n][i] * m[i]) >> (wavtable2[n][i] + 1);
for (i=0; i < BLOCKSIZE; i++)
dest[i] = ((*(s1++)) * a + (*(s2++)) * b + (*(s3++)) * c) >> 12;
dest[i] = ((*(s1++))*v[0] + (*(s2++))*v[1] + (*(s3++))*v[2]) >> 12;
}
@ -210,29 +203,29 @@ static void do_output_subblock(Real144_internal *glob, const unsigned short *gs
{
unsigned short int buffer_a[40];
unsigned short int *block;
int e, f, g;
int a = get_bits(gb, 7);
int d = get_bits(gb, 8);
int b = get_bits(gb, 7);
int c = get_bits(gb, 7);
int m[3];
if (a) {
a += HALFBLOCK - 1;
rotate_block(glob->buffer_2, buffer_a, a);
}
e = ((ftable1[b] >> 4) * gval) >> 8;
f = ((ftable2[c] >> 4) * gval) >> 8;
m[1] = ((ftable1[b] >> 4) * gval) >> 8;
m[2] = ((ftable2[c] >> 4) * gval) >> 8;
if (a)
g = irms(buffer_a, gval) >> 12;
m[0] = irms(buffer_a, gval) >> 12;
else
g = 0;
m[0] = 0;
memmove(glob->buffer_2, glob->buffer_2 + BLOCKSIZE, (BUFFERSIZE - BLOCKSIZE) * 2);
block = glob->buffer_2 + BUFFERSIZE - BLOCKSIZE;
add_wav(d, a, g, e, f, buffer_a, etable1[b],
add_wav(d, a, m, buffer_a, etable1[b],
etable2[c], block);
final(gsp, block, output_buffer, glob->buffer, BLOCKSIZE);