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Restructure vp9_decode_mb_tokens_16x16() a bit.

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Don't declare variables if they only ever have a single value and are
used only as argument to another function call; instead, just hardcode
the value in the function call directly. Also remove unneeded brackets
around a code block, and remove the magic offsets 64 and 256 for chroma
values in the coefficient memory block.

Change-Id: I14fc14120a81ea1d6fb862674e8bf8cf6ba3d114
This commit is contained in:
Ronald S. Bultje 2012-11-23 09:11:12 -08:00
parent 0312c3d6d9
commit f090b6b47b
1 changed files with 16 additions and 26 deletions
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42
vp9/decoder/detokenize.c
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@ -261,49 +261,39 @@ int vp9_decode_mb_tokens_16x16(VP9D_COMP* const pbi,
BOOL_DECODER* const bc) {
ENTROPY_CONTEXT* const A = (ENTROPY_CONTEXT *)xd->above_context;
ENTROPY_CONTEXT* const L = (ENTROPY_CONTEXT *)xd->left_context;
unsigned short* const eobs = xd->eobs;
PLANE_TYPE type;
int c, i, eobtotal = 0, seg_eob;
const int segment_id = xd->mode_info_context->mbmi.segment_id;
INT16 *qcoeff_ptr = &xd->qcoeff[0];
TX_TYPE tx_type = get_tx_type(xd, &xd->block[0]);
type = PLANE_TYPE_Y_WITH_DC;
seg_eob = get_eob(xd, segment_id, 256);
int c, i, eobtotal = 0, seg_eob;
// Luma block
{
const int* const scan = vp9_default_zig_zag1d_16x16;
eobs[0] = c = decode_coefs(pbi, xd, bc, A, L, type,
tx_type, seg_eob, qcoeff_ptr,
scan, TX_16X16, vp9_coef_bands_16x16);
A[1] = A[2] = A[3] = A[0];
L[1] = L[2] = L[3] = L[0];
eobtotal += c;
}
eobs[0] = c = decode_coefs(pbi, xd, bc, A, L, PLANE_TYPE_Y_WITH_DC,
get_tx_type(xd, &xd->block[0]),
get_eob(xd, segment_id, 256),
xd->qcoeff, vp9_default_zig_zag1d_16x16,
TX_16X16, vp9_coef_bands_16x16);
A[1] = A[2] = A[3] = A[0];
L[1] = L[2] = L[3] = L[0];
eobtotal += c;
// 8x8 chroma blocks
qcoeff_ptr += 256;
type = PLANE_TYPE_UV;
tx_type = DCT_DCT;
seg_eob = get_eob(xd, segment_id, 64);
for (i = 16; i < 24; i += 4) {
ENTROPY_CONTEXT* const a = A + vp9_block2above_8x8[i];
ENTROPY_CONTEXT* const l = L + vp9_block2left_8x8[i];
const int* const scan = vp9_default_zig_zag1d_8x8;
eobs[i] = c = decode_coefs(pbi, xd, bc, a, l, type,
tx_type, seg_eob, qcoeff_ptr,
scan, TX_8X8, vp9_coef_bands_8x8);
eobs[i] = c = decode_coefs(pbi, xd, bc, a, l, PLANE_TYPE_UV,
DCT_DCT, seg_eob, xd->block[i].qcoeff,
vp9_default_zig_zag1d_8x8,
TX_8X8, vp9_coef_bands_8x8);
a[1] = a[0];
l[1] = l[0];
eobtotal += c;
qcoeff_ptr += 64;
}
// no Y2 block
vpx_memset(&A[8], 0, sizeof(A[8]));
vpx_memset(&L[8], 0, sizeof(L[8]));
return eobtotal;
}