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cog: hacking to improve matrix quality

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This commit is contained in:
David Schleef 2009-10-07 16:30:26 -07:00
parent e30a20b777
commit 907dc1b271
2 changed files with 59 additions and 3 deletions
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52
ext/cog/cog.orc
View file

@ -264,6 +264,29 @@ shrsw t1, t1, 6
convsuswb d1, t1
.function orc_matrix2_2_u8
.dest 1 d1 uint8_t
.source 1 s1 uint8_t
.source 1 s2 uint8_t
.param 2 p1
.param 2 p2
.param 2 p3
.param 2 p4
.temp 2 t1
.temp 2 t2
convubw t1, s1
subw t1, t1, 16
mullw t1, t1, p1
convubw t2, s2
subw t2, t2, 128
mullw t2, t2, p2
addw t1, t1, t2
addw t1, t1, p3
shrsw t1, t1, p4
convsuswb d1, t1
.function orc_matrix3_u8
.dest 1 d1 uint8_t
.source 1 s1 uint8_t
@ -289,6 +312,35 @@ shrsw t1, t1, 6
convsuswb d1, t1
.function orc_matrix3_2_u8
.dest 1 d1 uint8_t
.source 1 s1 uint8_t
.source 1 s2 uint8_t
.source 1 s3 uint8_t
.param 2 p1
.param 2 p2
.param 2 p3
.param 2 p4
.param 2 p5
.temp 2 t1
.temp 2 t2
convubw t1, s1
subw t1, t1, 16
mullw t1, t1, p1
convubw t2, s2
subw t2, t2, 128
mullw t2, t2, p2
addw t1, t1, t2
convubw t2, s3
subw t2, t2, 128
mullw t2, t2, p3
addw t1, t1, t2
addw t1, t1, p4
shrsw t1, t1, p5
convsuswb d1, t1
.function orc_pack_123x
.dest 4 d1 uint32_t

10
ext/cog/cogvirtframe.c
View file

@ -1327,14 +1327,17 @@ color_matrix_YCbCr_to_RGB (CogFrame * frame, void *_dest, int component, int i)
m2 = 0;
m3 = 1.596;
offset = -222.92;
orc_matrix2_u8 (dest, src1, src3, 75, 102, -14269 + 32, frame->width);
//orc_matrix2_u8 (dest, src1, src3, 75, 102, -14269 + 32, frame->width);
orc_matrix2_2_u8 (dest, src1, src3, 75, 102, 32, 6, frame->width);
break;
case 1:
m1 = 1.1644;
m2 = -0.39176;
m3 = -0.81297;
offset = 135.58;
orc_matrix3_u8 (dest, src1, src2, src3, 75, -25, -52, 8677 + 32,
//orc_matrix3_u8 (dest, src1, src2, src3, 75, -25, -52, 8677 + 32,
// frame->width);
orc_matrix3_2_u8 (dest, src1, src2, src3, 75, -25, -52, 32, 6,
frame->width);
break;
case 2:
@ -1342,7 +1345,8 @@ color_matrix_YCbCr_to_RGB (CogFrame * frame, void *_dest, int component, int i)
m2 = 2.0172;
m3 = 0;
offset = -276.84;
orc_matrix2_u8 (dest, src1, src2, 75, 129, -17718 + 32, frame->width);
//orc_matrix2_u8 (dest, src1, src2, 75, 129, -17718 + 32, frame->width);
orc_matrix2_2_u8 (dest, src1, src2, 75, 129, 32, 6, frame->width);
break;
default:
m1 = 0.0;