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replace MULL by MULH + shift in dct32() (code is very slightly faster, and the compiler should be able to optimize the shift away on 64bit archs)

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Originally committed as revision 6045 to svn://svn.ffmpeg.org/ffmpeg/trunk
pull/126/head
Michael Niedermayer 19 years ago
parent 32255f6c2a
commit 0bd2483a75
4 changed files with 121 additions and 122 deletions
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  1. 217
      libavcodec/mpegaudiodec.c
  2. 2
      tests/ffmpeg.regression.ref
  3. 22
      tests/libav.regression.ref
  4. 2
      tests/rotozoom.regression.ref

217
libavcodec/mpegaudiodec.c
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@ -513,62 +513,62 @@ static int decode_init(AVCodecContext * avctx)
/* cos(i*pi/64) */
#define COS0_0 FIXR(0.50060299823519630134)
#define COS0_1 FIXR(0.50547095989754365998)
#define COS0_2 FIXR(0.51544730992262454697)
#define COS0_3 FIXR(0.53104259108978417447)
#define COS0_4 FIXR(0.55310389603444452782)
#define COS0_5 FIXR(0.58293496820613387367)
#define COS0_6 FIXR(0.62250412303566481615)
#define COS0_7 FIXR(0.67480834145500574602)
#define COS0_8 FIXR(0.74453627100229844977)
#define COS0_9 FIXR(0.83934964541552703873)
#define COS0_10 FIXR(0.97256823786196069369)
#define COS0_11 FIXR(1.16943993343288495515)
#define COS0_12 FIXR(1.48416461631416627724)
#define COS0_13 FIXR(2.05778100995341155085)
#define COS0_14 FIXR(3.40760841846871878570)
#define COS0_15 FIXR(10.19000812354805681150)
#define COS1_0 FIXR(0.50241928618815570551)
#define COS1_1 FIXR(0.52249861493968888062)
#define COS1_2 FIXR(0.56694403481635770368)
#define COS1_3 FIXR(0.64682178335999012954)
#define COS1_4 FIXR(0.78815462345125022473)
#define COS1_5 FIXR(1.06067768599034747134)
#define COS1_6 FIXR(1.72244709823833392782)
#define COS1_7 FIXR(5.10114861868916385802)
#define COS2_0 FIXR(0.50979557910415916894)
#define COS2_1 FIXR(0.60134488693504528054)
#define COS2_2 FIXR(0.89997622313641570463)
#define COS2_3 FIXR(2.56291544774150617881)
#define COS3_0 FIXR(0.54119610014619698439)
#define COS3_1 FIXR(1.30656296487637652785)
#define COS4_0 FIXR(0.70710678118654752439)
#define COS0_0 FIXHR(0.50060299823519630134/2)
#define COS0_1 FIXHR(0.50547095989754365998/2)
#define COS0_2 FIXHR(0.51544730992262454697/2)
#define COS0_3 FIXHR(0.53104259108978417447/2)
#define COS0_4 FIXHR(0.55310389603444452782/2)
#define COS0_5 FIXHR(0.58293496820613387367/2)
#define COS0_6 FIXHR(0.62250412303566481615/2)
#define COS0_7 FIXHR(0.67480834145500574602/2)
#define COS0_8 FIXHR(0.74453627100229844977/2)
#define COS0_9 FIXHR(0.83934964541552703873/2)
#define COS0_10 FIXHR(0.97256823786196069369/2)
#define COS0_11 FIXHR(1.16943993343288495515/4)
#define COS0_12 FIXHR(1.48416461631416627724/4)
#define COS0_13 FIXHR(2.05778100995341155085/8)
#define COS0_14 FIXHR(3.40760841846871878570/8)
#define COS0_15 FIXHR(10.19000812354805681150/32)
#define COS1_0 FIXHR(0.50241928618815570551/2)
#define COS1_1 FIXHR(0.52249861493968888062/2)
#define COS1_2 FIXHR(0.56694403481635770368/2)
#define COS1_3 FIXHR(0.64682178335999012954/2)
#define COS1_4 FIXHR(0.78815462345125022473/2)
#define COS1_5 FIXHR(1.06067768599034747134/4)
#define COS1_6 FIXHR(1.72244709823833392782/4)
#define COS1_7 FIXHR(5.10114861868916385802/16)
#define COS2_0 FIXHR(0.50979557910415916894/2)
#define COS2_1 FIXHR(0.60134488693504528054/2)
#define COS2_2 FIXHR(0.89997622313641570463/2)
#define COS2_3 FIXHR(2.56291544774150617881/8)
#define COS3_0 FIXHR(0.54119610014619698439/2)
#define COS3_1 FIXHR(1.30656296487637652785/4)
#define COS4_0 FIXHR(0.70710678118654752439/2)
/* butterfly operator */
#define BF(a, b, c)\
#define BF(a, b, c, s)\
{\
tmp0 = tab[a] + tab[b];\
tmp1 = tab[a] - tab[b];\
tab[a] = tmp0;\
tab[b] = MULL(tmp1, c);\
tab[b] = MULH(tmp1<<(s), c);\
}
#define BF1(a, b, c, d)\
{\
BF(a, b, COS4_0);\
BF(c, d, -COS4_0);\
BF(a, b, COS4_0, 1);\
BF(c, d,-COS4_0, 1);\
tab[c] += tab[d];\
}
#define BF2(a, b, c, d)\
{\
BF(a, b, COS4_0);\
BF(c, d, -COS4_0);\
BF(a, b, COS4_0, 1);\
BF(c, d,-COS4_0, 1);\
tab[c] += tab[d];\
tab[a] += tab[c];\
tab[c] += tab[b];\
@ -582,102 +582,101 @@ static void dct32(int32_t *out, int32_t *tab)
{
int tmp0, tmp1;
/* pass 1 */
BF(0, 31, COS0_0);
BF(15, 16, COS0_15);
BF( 0, 31, COS0_0 , 1);
BF(15, 16, COS0_15, 5);
/* pass 2 */
BF(0, 15, COS1_0);
BF(16, 31, -COS1_0);
BF( 0, 15, COS1_0 , 1);
BF(16, 31,-COS1_0 , 1);
/* pass 1 */
BF(7, 24, COS0_7);
BF(8, 23, COS0_8);
BF( 7, 24, COS0_7 , 1);
BF( 8, 23, COS0_8 , 1);
/* pass 2 */
BF(7, 8, COS1_7);
BF(23, 24, -COS1_7);
BF( 7, 8, COS1_7 , 4);
BF(23, 24,-COS1_7 , 4);
/* pass 3 */
BF(0, 7, COS2_0);
BF(8, 15, -COS2_0);
BF(16, 23, COS2_0);
BF(24, 31, -COS2_0);
BF( 0, 7, COS2_0 , 1);
BF( 8, 15,-COS2_0 , 1);
BF(16, 23, COS2_0 , 1);
BF(24, 31,-COS2_0 , 1);
/* pass 1 */
BF(3, 28, COS0_3);
BF(12, 19, COS0_12);
BF( 3, 28, COS0_3 , 1);
BF(12, 19, COS0_12, 2);
/* pass 2 */
BF(3, 12, COS1_3);
BF(19, 28, -COS1_3);
BF( 3, 12, COS1_3 , 1);
BF(19, 28,-COS1_3 , 1);
/* pass 1 */
BF(4, 27, COS0_4);
BF(11, 20, COS0_11);
BF( 4, 27, COS0_4 , 1);
BF(11, 20, COS0_11, 2);
/* pass 2 */
BF(4, 11, COS1_4);
BF(20, 27, -COS1_4);
BF( 4, 11, COS1_4 , 1);
BF(20, 27,-COS1_4 , 1);
/* pass 3 */
BF(3, 4, COS2_3);
BF(11, 12, -COS2_3);
BF(19, 20, COS2_3);
BF(27, 28, -COS2_3);
BF( 3, 4, COS2_3 , 3);
BF(11, 12,-COS2_3 , 3);
BF(19, 20, COS2_3 , 3);
BF(27, 28,-COS2_3 , 3);
/* pass 4 */
BF(0, 3, COS3_0);
BF(4, 7, -COS3_0);
BF(8, 11, COS3_0);
BF(12, 15, -COS3_0);
BF(16, 19, COS3_0);
BF(20, 23, -COS3_0);
BF(24, 27, COS3_0);
BF(28, 31, -COS3_0);
BF( 0, 3, COS3_0 , 1);
BF( 4, 7,-COS3_0 , 1);
BF( 8, 11, COS3_0 , 1);
BF(12, 15,-COS3_0 , 1);
BF(16, 19, COS3_0 , 1);
BF(20, 23,-COS3_0 , 1);
BF(24, 27, COS3_0 , 1);
BF(28, 31,-COS3_0 , 1);
/* pass 1 */
BF(1, 30, COS0_1);
BF(14, 17, COS0_14);
BF( 1, 30, COS0_1 , 1);
BF(14, 17, COS0_14, 3);
/* pass 2 */
BF(1, 14, COS1_1);
BF(17, 30, -COS1_1);
BF( 1, 14, COS1_1 , 1);
BF(17, 30,-COS1_1 , 1);
/* pass 1 */
BF(6, 25, COS0_6);
BF(9, 22, COS0_9);
BF( 6, 25, COS0_6 , 1);
BF( 9, 22, COS0_9 , 1);
/* pass 2 */
BF(6, 9, COS1_6);
BF(22, 25, -COS1_6);
BF( 6, 9, COS1_6 , 2);
BF(22, 25,-COS1_6 , 2);
/* pass 3 */
BF(1, 6, COS2_1);
BF(9, 14, -COS2_1);
BF(17, 22, COS2_1);
BF(25, 30, -COS2_1);
BF( 1, 6, COS2_1 , 1);
BF( 9, 14,-COS2_1 , 1);
BF(17, 22, COS2_1 , 1);
BF(25, 30,-COS2_1 , 1);
/* pass 1 */
BF(2, 29, COS0_2);
BF(13, 18, COS0_13);
BF( 2, 29, COS0_2 , 1);
BF(13, 18, COS0_13, 3);
/* pass 2 */
BF(2, 13, COS1_2);
BF(18, 29, -COS1_2);
BF( 2, 13, COS1_2 , 1);
BF(18, 29,-COS1_2 , 1);
/* pass 1 */
BF(5, 26, COS0_5);
BF(10, 21, COS0_10);
BF( 5, 26, COS0_5 , 1);
BF(10, 21, COS0_10, 1);
/* pass 2 */
BF(5, 10, COS1_5);
BF(21, 26, -COS1_5);
BF( 5, 10, COS1_5 , 2);
BF(21, 26,-COS1_5 , 2);
/* pass 3 */
BF(2, 5, COS2_2);
BF(10, 13, -COS2_2);
BF(18, 21, COS2_2);
BF(26, 29, -COS2_2);
BF( 2, 5, COS2_2 , 1);
BF(10, 13,-COS2_2 , 1);
BF(18, 21, COS2_2 , 1);
BF(26, 29,-COS2_2 , 1);
/* pass 4 */
BF(1, 2, COS3_1);
BF(5, 6, -COS3_1);
BF(9, 10, COS3_1);
BF(13, 14, -COS3_1);
BF(17, 18, COS3_1);
BF(21, 22, -COS3_1);
BF(25, 26, COS3_1);
BF(29, 30, -COS3_1);
BF( 1, 2, COS3_1 , 2);
BF( 5, 6,-COS3_1 , 2);
BF( 9, 10, COS3_1 , 2);
BF(13, 14,-COS3_1 , 2);
BF(17, 18, COS3_1 , 2);
BF(21, 22,-COS3_1 , 2);
BF(25, 26, COS3_1 , 2);
BF(29, 30,-COS3_1 , 2);
/* pass 5 */
BF1(0, 1, 2, 3);
BF2(4, 5, 6, 7);
BF1(8, 9, 10, 11);
BF1( 0, 1, 2, 3);
BF2( 4, 5, 6, 7);
BF1( 8, 9, 10, 11);
BF2(12, 13, 14, 15);
BF1(16, 17, 18, 19);
BF2(20, 21, 22, 23);

2
tests/ffmpeg.regression.ref
Unescape View File

@ -155,7 +155,7 @@ bbff871d1475e1eee4231a08e075de2c *./data/out.yuv
stddev: 10.99 PSNR:27.30 bytes:7602176
21f8ff9f1daacd9133683bb4ea0f50a4 *./data/a-mp2.mp2
95712 ./data/a-mp2.mp2
6956f2c5185c4edbae648c614992a14b *./data/out.wav
83f8df5d5f84480566af548bb037fceb *./data/out.wav
stddev:9330.70 PSNR:16.92 bytes:1054720
stddev:4396.13 PSNR:23.46 bytes:1052672
aefe11ab5067621a1c674859d6413891 *./data/a-ac3.rm

22
tests/libav.regression.ref
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@ -1,24 +1,24 @@
ffmpeg regression test
5fb135845dbde3ce5208c468173ef2c2 *./data/b-libav.avi
343318 ./data/b-libav.avi
./data/b-libav.avi CRC=0xccab3a27
343318 ./data/b-libav.avi
./data/b-libav.avi CRC=0x1fdd352c
6f4dca897d9a009009798e434fe5f651 *./data/b-libav.asf
342967 ./data/b-libav.asf
./data/b-libav.asf CRC=0x41af1ed9
342967 ./data/b-libav.asf
./data/b-libav.asf CRC=0x94d219de
5275686385346789108ec4fdf06ecef8 *./data/b-libav.rm
360269 ./data/b-libav.rm
90784a1b9589095f20fc6bcc0cc23cc4 *./data/b-libav.mpg
387072 ./data/b-libav.mpg
./data/b-libav.mpg CRC=0x8b644837
387072 ./data/b-libav.mpg
./data/b-libav.mpg CRC=0xde87433c
2933a367c996b49f4b7e66a481fb334e *./data/b-libav.ts
476768 ./data/b-libav.ts
./data/b-libav.ts CRC=0x0dd7fc5f
./data/b-libav.ts CRC=0x60faf764
57a8dfc7926802bb337a9d8918de94a8 *./data/b-libav.swf
41816 ./data/b-libav.swf
41816 ./data/b-libav.swf
./data/b-libav.swf CRC=0x2b273fea
0026c4e2528ff8f71b79ef53d38cc04d *./data/b-libav.ffm
389120 ./data/b-libav.ffm
./data/b-libav.ffm CRC=0x688bd1eb
389120 ./data/b-libav.ffm
./data/b-libav.ffm CRC=0x1acfcaf1
1596b6d08a94e6b5519357ed23a48aa3 *./data/b-libav.flv
339476 ./data/b-libav.flv
./data/b-libav.flv CRC=0x7b9076f8
@ -27,7 +27,7 @@ ffmpeg regression test
./data/b-libav.mov CRC=0x48f5a90d
8bf16d40a2ec19fa36b124a928e47e23 *./data/b-libav.nut
332358 ./data/b-libav.nut
./data/b-libav.nut CRC=0xccab3a27
./data/b-libav.nut CRC=0x1fdd352c
2cc647904d3cca01703f36056b9d3f42 *./data/b-libav.dv
3600000 ./data/b-libav.dv
./data/b-libav.dv CRC=0xa6b8b635

2
tests/rotozoom.regression.ref
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@ -155,7 +155,7 @@ stddev: 2.98 PSNR:38.61 bytes:7602176
stddev: 3.44 PSNR:37.38 bytes:7602176
21f8ff9f1daacd9133683bb4ea0f50a4 *./data/a-mp2.mp2
95712 ./data/a-mp2.mp2
6956f2c5185c4edbae648c614992a14b *./data/out.wav
83f8df5d5f84480566af548bb037fceb *./data/out.wav
stddev:9330.70 PSNR:16.92 bytes:1054720
stddev:4396.13 PSNR:23.46 bytes:1052672
aefe11ab5067621a1c674859d6413891 *./data/a-ac3.rm

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