X264的时耗分析（详） and 程序优化技术

  X264的时耗分析（详） and 程序优化技术

测试环境
测试环境：Intel Pentium4 3.00GHz  (双核cpu),开启超线程
内存:    DDR 1.00G
操作系统: Windows sever 2003 Enterprise Edition
分析软件: Intel(R) VTune(TM) Performance Analyzer 8.0(评估版lic)
编译软件: VC71+nasm0.98
Bus Speed: 800MHz
测试程序: X264 20060506 编码器

1、Debug版本
编码参数:
X264 -fps -o foreman.264 forman.cif 352x288
编码400frames,编码效率:23fps左右(libx264 debug版本),35fps(libx264 release版本)，提高了10fps以上，比较可观

2、
编码参数:
X264 -fps --no-asm -o foreman.264 forman.cif 352x288
--no-asm，Disable all CPU optimizations即未使用mmx,mmxext, sse,sse2,3dNow,3dnow ext,altivec等汇编指令优化。
编码400frames，编码效率2.67fps(libx264 debug版本),12.67fps(libx264 release版本),提高了10fps

Clockticks per Instructions Retired (CPI)表示该程序段的平均执行一条指令所需的时钟周期数,CPI越大表示该程序段调用的浮点数操作,乘法，除法，I/O处理，系统调用或文

件访问等代价昂贵的操作较多。
Instructions Retired events, 表示执行的指令数,越大表示该模块调用的较多.
Clockticks events 则表示该模块所消耗的时钟周期数,一般Clockticks events = Instructions Retired events * Clockticks per Instructions Retired (CPI),越大表示该模块消耗的时间越多,后面的Clockticks %则表示该模块的在所有程序中的时耗百分比.

这里有一点需要注意:(还是举例吧),例如要分析视频编码中去块滤波器算法/程序的时耗,并不是一个 x264_frame_deblocking_filter函数的时间消耗就是所有x264编解码过程中的时间消耗,由于 x264_frame_deblocking_filter调用deblck_edge,x264_clip3(该函数也被其他函数所调用)函数,而 deblock_edge下又调用x264_deblock_v8_luma_mmxext, x264_deblock_h_luma_mmxext,x_264_deblock_h_chroma_mmxext, deblock_luma_intra_c, x264_deblock_v_chroma_mmxext（这些函数通过指针重定义的方式以适应于不同的硬件平台，比如Intel,AMD的CPU采用 不同的指令系统，其实Mplayer,FFMPEG,T264等软件都采用类似的重定义方式,已达到一个软件使用与不同构架/平台，如 arm,powerpc,x86等）等函数。那么这里如果统计去块滤波器的算法的时间消耗百分比，就需要将该函数及其所有调用的子函数的时间消耗都计算在 内，x264_deblock_****都是唯一被deblock_edge调用，但对于x264_clip3，并不仅仅是去块滤波器部分调用，那么就只 能部分计算在去块滤波器之内，至于部分是多少要根据个函数的调用次数，这里不确定。

相关x264时耗分析数据后面的表格。deblock占4.3%左右，quant+dequant占3.3%左右，DCT+IDCT占1.1%左 右，主要是运动估计和运动补偿，ME中大量的sad/satd的计算，MC中的六阶滤波器tap_filter是主要时耗，具体我没有太细统计将近20% 左右，x264中由于采用了算法优化，程序优化及mmx,sse,sse2等指令优化，将原本消耗较大的去块滤波器等都有了较大程度地优化。

这里再讨论一下程序性能优化技术，程序性能优化可以大致从3个部分考虑。
1、算法结构优化，实现同样的应用功能可采用多种不同的算法和方 法，比如H.264种的运动估计全搜索和快速运动估计算法，实现的编码效率基本一致，但是处理时间可以节省10~20倍，所以需要选择高效的算法。还有递 归算法非递归化，递归算法使得程序结构清晰，可读性高，但却需要执行大量的过程调用，堆栈保存等，运行效率低下。

2、编译优化，现在很多编译器都实现了较强的代码优化功能，多数编译器都基于数据流分析以实现别名分析（通过变量重命名来消除数据相关，提高流水线 的执行效率），常数折叠，公共子表达式消除、冗余代码删除，循环逆转和循环展开等与体系结构无关的优化，例如GNU gcc就是个很好的编译工具。还有借用并行程序设计技术，进行相关性分析，并通过相应技术是程序具有更好的局部性以提高Cashe命中率。对于GCC中采 用-O -O2 -O3 -O4等选项选择针对速度/面积等性能优化,另外debug版本由于程序中加入较多的debug参数,影响程序效率,上面x264的debug和 release运行效率的对比可见一斑.编译优化属于静态优化，由编译器自动完成，但是编译器很难得到程序的语义信息，算法流程等信息。所以需要我们手工 编程优化以最大程度提高程序运行效率

3、程序优化，包括a)使用inline函数，很多编译器支持inline关键字，减少函数调用开销却增加了代码量。b)针对程序运行平台，如 x86(Intel)，Xscale，ARM，DSP等不同构架，可采用相应的汇编优化，将主要时耗部分/循环调用等，进行汇编指令优化 MMX,SSE,WiMMX,ARM/Thumb指令,DSP汇编等，或者采用专用的库函数,如针对Intel CPU/Xscale构架的嵌入式系统（PXA255,PXA270等）可使用IPP/GPP库，提高程序效率。c)对于DSP系统，由于有多个并行处理 单元，编译器会并行优化，所以需要尽量减少频繁小循环跳转，将循环展开，同时减少循环或内层循环也可以提高CPU的流线效率，尽量不断流。d)在 Switch语句中根据发生频率排序case语句，编译器对于switch语句将生成if-else-if的嵌套代码，按概率排序可提高效率 （FPGA/CPLD等逻辑器件中，采用VHDL语言描述的switch是生成多个逻辑器件，并且完全并行的）。e)减少函数调用参数. f)减少耗时的浮点数操作，除法操作等降低CPI

 

Size	Function	Clockticks per Instructions Retired (CPI)	Instructions Retired events	Clockticks events	Clockticks %	Source File
4917	refine_subpel	3.050938338	1119000000	3414000000	6.582219909	f:\x264-060506\x264-060506\encoder\me.c
176	x264_mc_chroma_mmxext	1.463709677	2232000000	3267000000	6.298802707
21502	x264_me_search_ref	2.515923567	942000000	2370000000	4.569379374	f:\x264-060506\x264-060506\encoder\me.c
880	x264_pixel_satd_8x8_sse2	1.43551797	1419000000	2037000000	3.927352652
99	RTC_CheckStackVars	3.563157895	570000000	2031000000	3.915784603
3296	x264_pixel_satd_16x16_sse2	1.54047619	1260000000	1941000000	3.742263867
237	get_ref_mmx	1.725925926	810000000	1398000000	2.695355428	f:\x264-060506\x264-060506\common\i386\mc-c.c
1183	block_residual_write_cabac	3.15862069	435000000	1374000000	2.649083232	f:\x264-060506\x264-060506\encoder\cabac.c
6480	x264_macroblock_analyse	24.05555556	54000000	1299000000	2.504482619	f:\x264-060506\x264-060506\encoder\analyse.c
272	x264_pixel_satd_4x4_mmxext	1.229850746	1005000000	1236000000	2.383018104
80	x264_pixel_avg_w16_mmxext	2.096045198	531000000	1113000000	2.145873099
232	x264_mb_decimate_score	1.354085603	771000000	1044000000	2.012840534	f:\x264-060506\x264-060506\encoder\macroblock.c
64	x264_pixel_avg_w8_mmxext	1.756906077	543000000	954000000	1.839319799
2413	x264_frame_deblocking_filter	1.703910615	537000000	915000000	1.76412748	f:\x264-060506\x264-060506\common\frame.c
2491	x264_macroblock_cache_save	2.152173913	414000000	891000000	1.717855284	f:\x264-060506\x264-060506\common\macroblock.c
656	x264_center_filter_mmxext	1.211864407	708000000	858000000	1.654231014
146	quant_4x4	2.989247312	279000000	834000000	1.607958818	f:\x264-060506\x264-060506\encoder\macroblock.c
5930	x264_macroblock_cache_load	2.090225564	399000000	834000000	1.607958818	f:\x264-060506\x264-060506\common\macroblock.c
206	x264_cabac_encode_renorm	2.125984252	381000000	810000000	1.561686622	f:\x264-060506\x264-060506\common\cabac.c
83	array_non_zero_count	1.191964286	672000000	801000000	1.544334548	f:\x264-060506\x264-060506\encoder\macroblock.h
96	memset	9.464285714	84000000	795000000	1.532766499	F:\VS70Builds\3077\vc\crtbld\crt\src\intel\memset.asm
363	predict_16x16_p	1.095435685	723000000	792000000	1.526982474	f:\x264-060506\x264-060506\common\predict.c
184	x264_cabac_encode_decision	2.371428571	315000000	747000000	1.440222107	f:\x264-060506\x264-060506\common\cabac.c
37	_RTC_CheckEsp	1.707142857	420000000	717000000	1.382381861
3693	x264_macroblock_encode	2.890243902	246000000	711000000	1.370813812	f:\x264-060506\x264-060506\encoder\macroblock.c
47	x264_clip_uint8	1.317365269	501000000	660000000	1.272485395	f:\x264-060506\x264-060506\common\clip1.h
304	x264_quant_4x4_core15_mmx	1.674796748	369000000	618000000	1.191509052
2091	x264_mb_analyse_intra	1.844036697	327000000	603000000	1.162588929	f:\x264-060506\x264-060506\encoder\analyse.c
1680	x264_pixel_satd_8x16_sse2	1.144508671	519000000	594000000	1.145236856
1696	x264_pixel_satd_16x8_sse2	1.449612403	387000000	561000000	1.081612586
164	motion_compensation_chroma_mmxext	1.459677419	372000000	543000000	1.046908439	f:\x264-060506\x264-060506\common\mc.c
328	deblock_edge	1.594059406	303000000	483000000	0.931227948	f:\x264-060506\x264-060506\common\frame.c
363	predict_8x8c_p	1.453703704	324000000	471000000	0.90809185	f:\x264-060506\x264-060506\common\predict.c
176	x264_macroblock_cache_mv	1.662650602	249000000	414000000	0.798195384	f:\x264-060506\x264-060506\common\macroblock.h
71	x264_clip3	1.666666667	216000000	360000000	0.694082943	f:\x264-060506\x264-060506\common\common.h
121	x264_macroblock_cache_ref	2.333333333	153000000	357000000	0.688298918	f:\x264-060506\x264-060506\common\macroblock.h
272	x264_horizontal_filter_mmxext	1.216494845	291000000	354000000	0.682514894
1104	x264_pixel_sad_x4_16x16_sse2	4.423076923	78000000	345000000	0.66516282
480	x264_pixel_satd_8x4_sse2	1.430379747	237000000	339000000	0.653594771
496	x264_deblock_v8_luma_mmxext	1.066666667	315000000	336000000	0.647810747
432	x264_pixel_sad_x4_8x8_mmxext	1.671641791	201000000	336000000	0.647810747
288	x264_pixel_sad_16x16_sse2	4.608695652	69000000	318000000	0.6131066
910	x264_mb_predict_mv	2.363636364	132000000	312000000	0.601538551	f:\x264-060506\x264-060506\common\macroblock.c
106	bs_write1	2.666666667	117000000	312000000	0.601538551	f:\x264-060506\x264-060506\common\bs.h
224	x264_sub4x4_dct_mmx	1.16091954	261000000	303000000	0.584186477
211	scan_zigzag_4x4full	1.672727273	165000000	276000000	0.532130256	f:\x264-060506\x264-060506\encoder\macroblock.c
656	x264_deblock_h_luma_mmxext	3.214285714	84000000	270000000	0.520562207
227	predict_16x16_dc	2.378378378	111000000	264000000	0.508994158	f:\x264-060506\x264-060506\common\predict.c
496	x264_pixel_satd_4x8_mmxext	1.242857143	210000000	261000000	0.503210134
960	x264_pixel_ssd_16x16_sse2	4.315789474	57000000	246000000	0.474290011
33	abs	1.860465116	129000000	240000000	0.462721962	f:\vs70builds\3077\vc\crtbld\crt\src\abs.c
864	x264_pixel_sad_x3_16x16_sse2	3.391304348	69000000	234000000	0.451153913
962	x264_mb_analyse_inter_p8x8	1.948717949	117000000	228000000	0.439585864	f:\x264-060506\x264-060506\encoder\analyse.c
3064	x264_macroblock_write_cabac	2.62962963	81000000	213000000	0.410665741	f:\x264-060506\x264-060506\encoder\cabac.c
1209	x264_mb_encode_8x8_chroma	2.379310345	87000000	207000000	0.399097692	f:\x264-060506\x264-060506\encoder\macroblock.c
829	memcpy	11	18000000	198000000	0.381745619	F:\VS70Builds\3077\vc\crtbld\crt\src\intel\memcpy.asm
386	predict_8x8c_dc	2.52	75000000	189000000	0.364393545	f:\x264-060506\x264-060506\common\predict.c
202	bs_write	1.909090909	99000000	189000000	0.364393545	f:\x264-060506\x264-060506\common\bs.h
352	x264_pixel_sad_x3_8x8_mmxext	2.172413793	87000000	189000000	0.364393545
144	x264_pixel_sad_8x8_mmxext	2.384615385	78000000	186000000	0.358609521
156	predict_16x16_h	2	90000000	180000000	0.347041471	f:\x264-060506\x264-060506\common\predict.c
178	predict_16x16_v	2.52173913	69000000	174000000	0.335473422	f:\x264-060506\x264-060506\common\predict.c
128	x264_mc_copy_w16_mmx	9.666666667	18000000	174000000	0.335473422
405	x264_cabac_mb_mvd_cpn	2.192307692	78000000	171000000	0.329689398	f:\x264-060506\x264-060506\encoder\cabac.c
161	x264_cabac_putbit	1.4	120000000	168000000	0.323905373	f:\x264-060506\x264-060506\common\cabac.c
304	x264_dequant_4x4_mmx	2.545454545	66000000	168000000	0.323905373
592	x264_pixel_sad_x4_16x8_sse2	2.291666667	72000000	165000000	0.318121349
103	x264_median	2.6	60000000	156000000	0.300769275	f:\x264-060506\x264-060506\common\common.h
398	predict_4x4_ddl	1.5625	96000000	150000000	0.289201226	f:\x264-060506\x264-060506\common\predict.c
272	x264_add4x4_idct_mmx	1.139534884	129000000	147000000	0.283417202
418	x264_cabac_mb_cbp_luma	2.666666667	54000000	144000000	0.277633177	f:\x264-060506\x264-060506\encoder\cabac.c
414	predict_4x4_ddr	2.285714286	63000000	144000000	0.277633177	f:\x264-060506\x264-060506\common\predict.c
405	predict_4x4_vl	1.777777778	81000000	144000000	0.277633177	f:\x264-060506\x264-060506\common\predict.c
1455	x264_mb_predict_mv_ref16x16	3.692307692	39000000	144000000	0.277633177	f:\x264-060506\x264-060506\common\macroblock.c
1181	x264_mb_analyse_inter_p16x16	4.6	30000000	138000000	0.266065128	f:\x264-060506\x264-060506\encoder\analyse.c
176	x264_macroblock_cache_mvd	1.769230769	78000000	138000000	0.266065128	f:\x264-060506\x264-060506\common\macroblock.h
816	x264_pixel_sad_x4_8x16_mmxext	1.769230769	78000000	138000000	0.266065128
199	scan_zigzag_4x4	2.045454545	66000000	135000000	0.260281104	f:\x264-060506\x264-060506\encoder\macroblock.c
446	predict_4x4_mode_available	2.25	60000000	135000000	0.260281104	f:\x264-060506\x264-060506\encoder\analyse.c
1148	x264_mb_analyse_inter_p16x8	3.142857143	42000000	132000000	0.254497079	f:\x264-060506\x264-060506\encoder\analyse.c
1746	x264_mb_analyse_init	8.2	15000000	123000000	0.237145005	f:\x264-060506\x264-060506\encoder\analyse.c
511	x264_mb_analyse_intra_chroma	2.733333333	45000000	123000000	0.237145005	f:\x264-060506\x264-060506\encoder\analyse.c
425	predict_4x4_hd	1.28125	96000000	123000000	0.237145005	f:\x264-060506\x264-060506\common\predict.c
425	predict_4x4_vr	1.413793103	87000000	123000000	0.237145005	f:\x264-060506\x264-060506\common\predict.c
122	predict_8x8c_h	1.952380952	63000000	123000000	0.237145005	f:\x264-060506\x264-060506\common\predict.c
425	x264_mb_encode_i4x4	2.105263158	57000000	120000000	0.231360981	f:\x264-060506\x264-060506\encoder\macroblock.c
464	x264_pixel_sad_x3_16x8_sse2	5	24000000	120000000	0.231360981
672	x264_pixel_sad_x3_8x16_mmxext	2.666666667	45000000	120000000	0.231360981
297	predict_4x4_hu	1.772727273	66000000	117000000	0.225576956	f:\x264-060506\x264-060506\common\predict.c
120	predict_8x8c_v	3.083333333	36000000	111000000	0.214008907	f:\x264-060506\x264-060506\common\predict.c
464	x264_deblock_h_chroma_mmxext	1.166666667	90000000	105000000	0.202440858
240	x264_pixel_sad_8x16_mmxext	1.888888889	54000000	102000000	0.196656834
1104	x264_mb_analyse_inter_p8x16	3	33000000	99000000	0.190872809	f:\x264-060506\x264-060506\encoder\analyse.c
176	x264_pixel_sad_16x8_sse2	3.666666667	27000000	99000000	0.190872809
194	x264_cabac_encode_bypass	1.192307692	78000000	93000000	0.17930476	f:\x264-060506\x264-060506\common\cabac.c
836	x264_cabac_mb_cbf_ctxidxinc	1.875	48000000	90000000	0.173520736	f:\x264-060506\x264-060506\encoder\cabac.c
80	x264_mc_copy_w8_mmx	3	30000000	90000000	0.173520736
1385	x264_slice_write	4.833333333	18000000	87000000	0.167736711	f:\x264-060506\x264-060506\encoder\encoder.c
680	deblock_luma_intra_c	2.153846154	39000000	84000000	0.161952687	f:\x264-060506\x264-060506\common\frame.c
503	x264_mb_mc_0xywh	1.857142857	42000000	78000000	0.150384638	f:\x264-060506\x264-060506\common\macroblock.c
134	predict_4x4_dc	5	15000000	75000000	0.144600613	f:\x264-060506\x264-060506\common\predict.c
577	x264_mb_predict_mv_16x16	2.5	30000000	75000000	0.144600613	f:\x264-060506\x264-060506\common\macroblock.c
324	plane_expand_border	6.25	12000000	75000000	0.144600613	f:\x264-060506\x264-060506\common\frame.c
272	x264_deblock_v_chroma_mmxext	1.642857143	42000000	69000000	0.133032564
123	x264_sub8x8_dct_mmx	1.111111111	54000000	60000000	0.11568049	f:\x264-060506\x264-060506\common\i386\dct-c.c
1359	x264_macroblock_probe_skip	2.714285714	21000000	57000000	0.109896466	f:\x264-060506\x264-060506\encoder\macroblock.c
305	x264_cabac_mb_mvd	3.4	15000000	51000000	0.098328417	f:\x264-060506\x264-060506\encoder\cabac.c
1880	x264_analyse_update_cache	4	12000000	48000000	0.092544392	f:\x264-060506\x264-060506\encoder\analyse.c
64	array_non_zero	4.666666667	9000000	42000000	0.080976343	f:\x264-060506\x264-060506\encoder\macroblock.h
271	x264_mb_dequant_2x2_dc	3.5	12000000	42000000	0.080976343	f:\x264-060506\x264-060506\common\quant.c
266	mc_luma_mmx	2.166666667	18000000	39000000	0.075192319	f:\x264-060506\x264-060506\common\i386\mc-c.c
199	dct2x2dc	3.25	12000000	39000000	0.075192319	f:\x264-060506\x264-060506\common\dct.c
149	quant_2x2_dc	1	33000000	33000000	0.06362427	f:\x264-060506\x264-060506\encoder\macroblock.c
320	x264_cabac_mb_cbp_chroma	2.75	12000000	33000000	0.06362427	f:\x264-060506\x264-060506\encoder\cabac.c
61	_alloca_probe		0	33000000	0.06362427	F:\VS70Builds\3077\vc\crtbld\crt\src\intel\chkstk.asm
38	x264_me_search	2.5	12000000	30000000	0.057840245	f:\x264-060506\x264-060506\encoder\analyse.c
145	x264_mb_predict_intra4x4_mode	1	30000000	30000000	0.057840245	f:\x264-060506\x264-060506\common\macroblock.c
194	x264_mb_predict_mv_pskip		0	30000000	0.057840245	f:\x264-060506\x264-060506\common\macroblock.c
279	x264_nal_encode	2	15000000	30000000	0.057840245	f:\x264-060506\x264-060506\common\common.c
172	x264_cabac_mb_skip	3	9000000	27000000	0.052056221	f:\x264-060506\x264-060506\encoder\cabac.c
59	predict_4x4_v	4.5	6000000	27000000	0.052056221	f:\x264-060506\x264-060506\common\predict.c
1253	x264_mb_mc	3	9000000	27000000	0.052056221	f:\x264-060506\x264-060506\common\macroblock.c
74	x264_deblock_v_luma_mmxext	1.125	24000000	27000000	0.052056221	f:\x264-060506\x264-060506\common\frame.c
227	predict_8x8chroma_mode_available	4	6000000	24000000	0.046272196	f:\x264-060506\x264-060506\encoder\analyse.c
47	bs_size_te		0	24000000	0.046272196	f:\x264-060506\x264-060506\common\bs.h
1131	x264_cabac_mb_type	1	21000000	21000000	0.040488172	f:\x264-060506\x264-060506\encoder\cabac.c
80	predict_4x4_h	3.5	6000000	21000000	0.040488172	f:\x264-060506\x264-060506\common\predict.c
17	x264_ratecontrol_qp		0	18000000	0.034704147	f:\x264-060506\x264-060506\encoder\ratecontrol.c
55	scan_zigzag_2x2_dc	2	9000000	18000000	0.034704147	f:\x264-060506\x264-060506\encoder\macroblock.c
115	x264_macroblock_encode_skip	2	9000000	18000000	0.034704147	f:\x264-060506\x264-060506\encoder\macroblock.c
279	x264_mb_analyse_transform	6	3000000	18000000	0.034704147	f:\x264-060506\x264-060506\encoder\analyse.c
138	x264_sub16x16_dct_mmx	1.5	12000000	18000000	0.034704147	f:\x264-060506\x264-060506\common\i386\dct-c.c
125	bs_size_ue	1	18000000	18000000	0.034704147	f:\x264-060506\x264-060506\common\bs.h
142	x264_me_refine_qpel	2.5	6000000	15000000	0.028920123	f:\x264-060506\x264-060506\encoder\me.c
233	x264_mb_analyse_load_costs	1.666666667	9000000	15000000	0.028920123	f:\x264-060506\x264-060506\encoder\analyse.c
14	_security_check_cookie	2.5	6000000	15000000	0.028920123	f:\vs70builds\3077\vc\crtbld\crt\src\secchk.c
444	x264_cabac_mb8x8_mvd	4	3000000	12000000	0.023136098	f:\x264-060506\x264-060506\encoder\cabac.c
312	x264_cabac_mb_qp_delta	4	3000000	12000000	0.023136098	f:\x264-060506\x264-060506\encoder\cabac.c
207	predict_16x16_dc_top	2	6000000	12000000	0.023136098	f:\x264-060506\x264-060506\common\predict.c
213	predict_8x8c_dc_top		0	12000000	0.023136098	f:\x264-060506\x264-060506\common\predict.c
39	x264_cabac_pos	4	3000000	12000000	0.023136098	f:\x264-060506\x264-060506\common\cabac.h
368	x264_deblock_h_chroma_intra_mmxext	1.333333333	9000000	12000000	0.023136098
5058	x264_encoder_encode		0	9000000	0.017352074	f:\x264-060506\x264-060506\encoder\encoder.c
768	x264_mb_cache_mv_p8x8		0	9000000	0.017352074	f:\x264-060506\x264-060506\encoder\analyse.c
211	predict_16x16_dc_left	1.5	6000000	9000000	0.017352074	f:\x264-060506\x264-060506\common\predict.c
299	predict_8x8c_dc_left	0.75	12000000	9000000	0.017352074	f:\x264-060506\x264-060506\common\predict.c
91	x264_cabac_encode_terminal		0	9000000	0.017352074	f:\x264-060506\x264-060506\common\cabac.c
104	_aulldiv	3	3000000	9000000	0.017352074	F:\VS70Builds\3077\vc\crtbld\crt\src\intel\ulldiv.asm
341	x264_macroblock_encode_pskip		0	6000000	0.011568049	f:\x264-060506\x264-060506\encoder\macroblock.c
130	x264_psnr		0	6000000	0.011568049	f:\x264-060506\x264-060506\encoder\encoder.c
950	x264_slice_header_write		0	6000000	0.011568049	f:\x264-060506\x264-060506\encoder\encoder.c
161	x264_cabac_encode_ue_bypass	1	6000000	6000000	0.011568049	f:\x264-060506\x264-060506\encoder\cabac.c
100	x264_add8x8_idct_mmx	0.333333333	18000000	6000000	0.011568049	f:\x264-060506\x264-060506\common\i386\dct-c.c
69	plane_copy		0	6000000	0.011568049	f:\x264-060506\x264-060506\common\csp.c
142	x264_cabac_context_init	2	3000000	6000000	0.011568049	f:\x264-060506\x264-060506\common\cabac.c
3526	_output		0	6000000	0.011568049	f:\vs70builds\3077\vc\crtbld\crt\src\output.c
52	_allmul	2	3000000	6000000	0.011568049	F:\VS70Builds\3077\vc\crtbld\crt\src\intel\llmul.asm
173	__add_12		0	6000000	0.011568049
600	_log_pentium4		0	6000000	0.011568049
96	x264_quant_2x2_dc_core16_mmxext		0	6000000	0.011568049
802	x264_ratecontrol_start		0	3000000	0.005784025	f:\x264-060506\x264-060506\encoder\ratecontrol.c
1051	x264_mb_encode_i16x16	1	3000000	3000000	0.005784025	f:\x264-060506\x264-060506\encoder\macroblock.c
139	x264_nal_end		0	3000000	0.005784025	f:\x264-060506\x264-060506\encoder\encoder.c
426	x264_slice_init		0	3000000	0.005784025	f:\x264-060506\x264-060506\encoder\encoder.c
227	predict_16x16_mode_available	1	3000000	3000000	0.005784025	f:\x264-060506\x264-060506\encoder\analyse.c
1625	x264_cqm_init		0	3000000	0.005784025	f:\x264-060506\x264-060506\common\set.c
430	x264_mb_dequant_4x4_dc		0	3000000	0.005784025	f:\x264-060506\x264-060506\common\quant.c
137	predict_16x16_dc_128		0	3000000	0.005784025	f:\x264-060506\x264-060506\common\predict.c
101	predict_8x8c_dc_128		0	3000000	0.005784025	f:\x264-060506\x264-060506\common\predict.c
575	x264_macroblock_slice_init		0	3000000	0.005784025	f:\x264-060506\x264-060506\common\macroblock.c
929	x264_mb_mc_8x8		0	3000000	0.005784025	f:\x264-060506\x264-060506\common\macroblock.c
338	i420_to_i420		0	3000000	0.005784025	f:\x264-060506\x264-060506\common\csp.c
29	bs_pos	1	3000000	3000000	0.005784025	f:\x264-060506\x264-060506\common\bs.h
172	bs_write_ue		0	3000000	0.005784025	f:\x264-060506\x264-060506\common\bs.h
1100	_read		0	3000000	0.005784025	f:\vs70builds\3077\vc\crtbld\crt\src\read.c
1242	I10_OUTPUT	1	3000000	3000000	0.005784025
62	__addl		0	3000000	0.005784025
332	__dtold		0	3000000	0.005784025
1007	__ld12mul	0.5	6000000	3000000	0.005784025
389	_cftof		0	3000000	0.005784025
675	x264_pixel_ssd_wxh	0	6000000	0	0	f:\x264-060506\x264-060506\common\pixel.c
108	write_string	0	3000000	0	0	f:\vs70builds\3077\vc\crtbld\crt\src\output.c
467	_filbuf	0	3000000	0	0	f:\vs70builds\3077\vc\crtbld\crt\src\_filbuf.c