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Code Issues Releases Activity

Remove yet another val (gbuf1) from context

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Originally committed as revision 13374 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Vitor Sessak 2008-05-25 13:23:27 +00:00
parent 94e79f0949
commit cb24827f4d
1 changed files with 13 additions and 12 deletions
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25
libavcodec/ra144.c
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@ -32,7 +32,6 @@
/* internal globals */
typedef struct {
unsigned int oldval;
unsigned int gbuf1[4];
unsigned short gbuf2[4][30];
/* the swapped buffers */
@ -239,17 +238,18 @@ static void do_output_subblock(Real144_internal *glob, const unsigned short *gs
final(gsp, block, output_buffer, glob->buffer, BLOCKSIZE);
}
static void dec1(Real144_internal *glob, const int *data, const int *inp,
static int dec1(Real144_internal *glob, const int *data, const int *inp,
int f, int block_idx)
{
short *ptr,*end;
signed short *decsp = glob->gbuf2[block_idx];
glob->gbuf1[block_idx] = rms(data, f);
end = (ptr = decsp) + 30;
while (ptr < end)
*(ptr++) = *(inp++);
return rms(data, f);
}
static int eq(const short *in, int *target)
@ -295,7 +295,7 @@ static int eq(const short *in, int *target)
return retval;
}
static void dec2(Real144_internal *glob, const int *data, const int *inp,
static int dec2(Real144_internal *glob, const int *data, const int *inp,
int f, const int *inp2, int l)
{
unsigned const int *ptr1,*ptr2;
@ -322,9 +322,9 @@ static void dec2(Real144_internal *glob, const int *data, const int *inp,
result = eq(decsp, work);
if (result == 1) {
dec1(glob, data, inp, f, l);
return dec1(glob, data, inp, f, l);
} else {
glob->gbuf1[l] = rms(work, f);
return rms(work, f);
}
}
@ -334,6 +334,7 @@ static int ra144_decode_frame(AVCodecContext * avctx,
const uint8_t * buf, int buf_size)
{
static const uint8_t sizes[10] = {6, 5, 5, 4, 4, 3, 3, 3, 3, 2};
unsigned int gbuf1[4];
unsigned int a, c;
int i;
int16_t *data = vdata;
@ -358,18 +359,18 @@ static int ra144_decode_frame(AVCodecContext * avctx,
val = decodeval[get_bits(&gb, 5) << 1]; // Useless table entries?
a = t_sqrt(val*glob->oldval) >> 12;
dec2(glob, glob->swapbuf1alt, glob->swapbuf2alt, glob->oldval, glob->swapbuf2, 0);
gbuf1[0] = dec2(glob, glob->swapbuf1alt, glob->swapbuf2alt, glob->oldval, glob->swapbuf2, 0);
if (glob->oldval < val) {
dec2(glob, glob->swapbuf1, glob->swapbuf2, a, glob->swapbuf2alt, 1);
gbuf1[1] = dec2(glob, glob->swapbuf1, glob->swapbuf2, a, glob->swapbuf2alt, 1);
} else {
dec2(glob, glob->swapbuf1alt, glob->swapbuf2alt, a, glob->swapbuf2, 1);
gbuf1[1] = dec2(glob, glob->swapbuf1alt, glob->swapbuf2alt, a, glob->swapbuf2, 1);
}
dec2(glob, glob->swapbuf1, glob->swapbuf2, val, glob->swapbuf2alt, 2);
dec1(glob, glob->swapbuf1, glob->swapbuf2, val, 3);
gbuf1[2] = dec2(glob, glob->swapbuf1, glob->swapbuf2, val, glob->swapbuf2alt, 2);
gbuf1[3] = dec1(glob, glob->swapbuf1, glob->swapbuf2, val, 3);
/* do output */
for (c=0; c<4; c++) {
do_output_subblock(glob, glob->gbuf2[c], glob->gbuf1[c], data, &gb);
do_output_subblock(glob, glob->gbuf2[c], gbuf1[c], data, &gb);
for (i=0; i<BLOCKSIZE; i++) {
*data = av_clip_int16(*data << 2);