removing the function call overhead improves performance Signed-off-by: Aric Stewart <aric@xxxxxxxxxxxxxxx> --- quic.js | 27 +++++++++++---------------- 1 files changed, 11 insertions(+), 16 deletions(-) diff --git a/quic.js b/quic.js index 0e33610..138b052 100644 --- a/quic.js +++ b/quic.js @@ -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); -- 1.7.7.5 (Apple Git-26)
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