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remove function find_bucket_8bpc

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removing the function call overhead improves performance

Signed-off-by: Aric Stewart <aric@codeweavers.com>
This commit is contained in:
Aric Stewart 2012-09-24 10:49:35 -05:00 committed by Jeremy White
parent 8306bbab2c
commit cd9f5b52ef
1 changed files with 11 additions and 16 deletions
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27
quic.js
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@ -436,11 +436,6 @@ function QuicChannel(model_8bpc, model_5bpc)
QuicChannel.prototype = {
find_bucket_8bpc : function(val)
{
return this.buckets_ptrs[val];
},
reste : function (bpc)
{
this.correlate_row = { zero: 0 , row: []};
@ -652,7 +647,7 @@ QuicEncoder.prototype.quic_rgb32_uncompress_row0_seg = function (i, cur_row, end
c = 0;
do
{
a = golomb_decoding_8bpc(this.channels[c].find_bucket_8bpc(this.channels[c].correlate_row.zero).bestcode, this.io_word);
a = golomb_decoding_8bpc(this.channels[c].buckets_ptrs[this.channels[c].correlate_row.zero].bestcode, this.io_word);
this.channels[c].correlate_row.row[0] = a.rc;
cur_row[2-c] = (family_8bpc.xlatL2U[a.rc]&0xFF);
this.decode_eatbits(a.codewordlen);
@ -665,7 +660,7 @@ QuicEncoder.prototype.quic_rgb32_uncompress_row0_seg = function (i, cur_row, end
c = 0;
do
{
this.channels[c].find_bucket_8bpc(this.channels[c].correlate_row.zero).update_model_8bpc(this.rgb_state, this.channels[c].correlate_row.row[0], bpc);
this.channels[c].buckets_ptrs[this.channels[c].correlate_row.zero].update_model_8bpc(this.rgb_state, this.channels[c].correlate_row.row[0], bpc);
} while (++c < n_channels);
}
stopidx = ++i + this.rgb_state.waitcnt;
@ -681,7 +676,7 @@ QuicEncoder.prototype.quic_rgb32_uncompress_row0_seg = function (i, cur_row, end
c = 0;
do
{
a = golomb_decoding_8bpc(this.channels[c].find_bucket_8bpc(this.channels[c].correlate_row.row[i - 1]).bestcode, this.io_word);
a = golomb_decoding_8bpc(this.channels[c].buckets_ptrs[this.channels[c].correlate_row.row[i - 1]].bestcode, this.io_word);
this.channels[c].correlate_row.row[i] = a.rc;
cur_row[(i* rgb32_pixel_size)+(2-c)] = (family_8bpc.xlatL2U[a.rc] + cur_row[((i-1) * rgb32_pixel_size) + (2-c)]) & bpc_mask;
this.decode_eatbits(a.codewordlen);
@ -690,7 +685,7 @@ QuicEncoder.prototype.quic_rgb32_uncompress_row0_seg = function (i, cur_row, end
c = 0;
do
{
this.channels[c].find_bucket_8bpc(this.channels[c].correlate_row.row[stopidx - 1]).update_model_8bpc(this.rgb_state, this.channels[c].correlate_row.row[stopidx], bpc);
this.channels[c].buckets_ptrs[this.channels[c].correlate_row.row[stopidx - 1]].update_model_8bpc(this.rgb_state, this.channels[c].correlate_row.row[stopidx], bpc);
} while (++c < n_channels);
stopidx = i + (this.rgb_state.tabrand() & waitmask);
}
@ -702,7 +697,7 @@ QuicEncoder.prototype.quic_rgb32_uncompress_row0_seg = function (i, cur_row, end
c = 0;
do
{
a = golomb_decoding_8bpc(this.channels[c].find_bucket_8bpc(this.channels[c].correlate_row.row[i - 1]).bestcode, this.io_word);
a = golomb_decoding_8bpc(this.channels[c].buckets_ptrs[this.channels[c].correlate_row.row[i - 1]].bestcode, this.io_word);
this.channels[c].correlate_row.row[i] = a.rc;
cur_row[(i* rgb32_pixel_size)+(2-c)] = (family_8bpc.xlatL2U[a.rc] + cur_row[((i-1) * rgb32_pixel_size) + (2-c)]) & bpc_mask;
this.decode_eatbits(a.codewordlen);
@ -759,7 +754,7 @@ QuicEncoder.prototype.quic_rgb32_uncompress_row_seg = function( prev_row, cur_ro
c = 0;
do {
a = golomb_decoding_8bpc(this.channels[c].find_bucket_8bpc(this.channels[c].correlate_row.zero).bestcode, this.io_word);
a = golomb_decoding_8bpc(this.channels[c].buckets_ptrs[this.channels[c].correlate_row.zero].bestcode, this.io_word);
this.channels[c].correlate_row.row[0] = a.rc;
cur_row[2-c] = (family_8bpc.xlatL2U[this.channels[c].correlate_row.row[0]] + prev_row[2-c]) & bpc_mask;
this.decode_eatbits(a.codewordlen);
@ -771,7 +766,7 @@ QuicEncoder.prototype.quic_rgb32_uncompress_row_seg = function( prev_row, cur_ro
this.rgb_state.waitcnt = (this.rgb_state.tabrand() & waitmask);
c = 0;
do {
this.channels[c].find_bucket_8bpc(this.channels[c].correlate_row.zero).update_model_8bpc(this.rgb_state, this.channels[c].correlate_row.row[0], bpc);
this.channels[c].buckets_ptrs[this.channels[c].correlate_row.zero].update_model_8bpc(this.rgb_state, this.channels[c].correlate_row.row[0], bpc);
} while (++c < n_channels);
}
stopidx = ++i + this.rgb_state.waitcnt;
@ -779,7 +774,7 @@ QuicEncoder.prototype.quic_rgb32_uncompress_row_seg = function( prev_row, cur_ro
stopidx = i + this.rgb_state.waitcnt;
}
for (;;) {
rc = 0;
var rc = 0;
while (stopidx < end && !rc) {
for (; i <= stopidx && !rc; i++) {
var pixel = i * rgb32_pixel_size;
@ -822,7 +817,7 @@ QuicEncoder.prototype.quic_rgb32_uncompress_row_seg = function( prev_row, cur_ro
var cc = this.channels[c];
var cr = cc.correlate_row;
a = golomb_decoding_8bpc(cc.find_bucket_8bpc(cr.row[i-1]).bestcode, this.io_word);
a = golomb_decoding_8bpc(cc.buckets_ptrs[cr.row[i-1]].bestcode, this.io_word);
cr.row[i] = a.rc;
cur_row[pixel+(2-c)] = (family_8bpc.xlatL2U[a.rc] + ((cur_row[pixelm1+(2-c)] + prev_row[pixel+(2-c)]) >> 1)) & bpc_mask;
this.decode_eatbits(a.codewordlen);
@ -833,7 +828,7 @@ QuicEncoder.prototype.quic_rgb32_uncompress_row_seg = function( prev_row, cur_ro
c = 0;
do {
this.channels[c].find_bucket_8bpc(this.channels[c].correlate_row.row[stopidx - 1]).update_model_8bpc(this.rgb_state, this.channels[c].correlate_row.row[stopidx], bpc);
this.channels[c].buckets_ptrs[this.channels[c].correlate_row.row[stopidx - 1]].update_model_8bpc(this.rgb_state, this.channels[c].correlate_row.row[stopidx], bpc);
} while (++c < n_channels);
stopidx = i + (this.rgb_state.tabrand() & waitmask);
@ -878,7 +873,7 @@ QuicEncoder.prototype.quic_rgb32_uncompress_row_seg = function( prev_row, cur_ro
c = 0;
do
{
a = golomb_decoding_8bpc(this.channels[c].find_bucket_8bpc(this.channels[c].correlate_row.row[i-1]).bestcode, this.io_word);
a = golomb_decoding_8bpc(this.channels[c].buckets_ptrs[this.channels[c].correlate_row.row[i-1]].bestcode, this.io_word);
this.channels[c].correlate_row.row[i] = a.rc;
cur_row[pixel+(2-c)] = (family_8bpc.xlatL2U[a.rc] + ((cur_row[pixelm1+(2-c)] + prev_row[pixel+(2-c)]) >> 1)) & bpc_mask;
this.decode_eatbits(a.codewordlen);