diff options
Diffstat (limited to 'src/libffmpeg/libavcodec/jfdctfst.c')
| -rw-r--r-- | src/libffmpeg/libavcodec/jfdctfst.c | 74 |
1 files changed, 37 insertions, 37 deletions
diff --git a/src/libffmpeg/libavcodec/jfdctfst.c b/src/libffmpeg/libavcodec/jfdctfst.c index a393c5ca8..804fd5766 100644 --- a/src/libffmpeg/libavcodec/jfdctfst.c +++ b/src/libffmpeg/libavcodec/jfdctfst.c @@ -34,7 +34,7 @@ * @file jfdctfst.c * Independent JPEG Group's fast AAN dct. */ - + #include <stdlib.h> #include <stdio.h> #include "common.h" @@ -83,10 +83,10 @@ */ #if CONST_BITS == 8 -#define FIX_0_382683433 ((int32_t) 98) /* FIX(0.382683433) */ -#define FIX_0_541196100 ((int32_t) 139) /* FIX(0.541196100) */ -#define FIX_0_707106781 ((int32_t) 181) /* FIX(0.707106781) */ -#define FIX_1_306562965 ((int32_t) 334) /* FIX(1.306562965) */ +#define FIX_0_382683433 ((int32_t) 98) /* FIX(0.382683433) */ +#define FIX_0_541196100 ((int32_t) 139) /* FIX(0.541196100) */ +#define FIX_0_707106781 ((int32_t) 181) /* FIX(0.707106781) */ +#define FIX_1_306562965 ((int32_t) 334) /* FIX(1.306562965) */ #else #define FIX_0_382683433 FIX(0.382683433) #define FIX_0_541196100 FIX(0.541196100) @@ -132,42 +132,42 @@ static always_inline void row_fdct(DCTELEM * data){ tmp5 = dataptr[2] - dataptr[5]; tmp3 = dataptr[3] + dataptr[4]; tmp4 = dataptr[3] - dataptr[4]; - + /* Even part */ - - tmp10 = tmp0 + tmp3; /* phase 2 */ + + tmp10 = tmp0 + tmp3; /* phase 2 */ tmp13 = tmp0 - tmp3; tmp11 = tmp1 + tmp2; tmp12 = tmp1 - tmp2; - + dataptr[0] = tmp10 + tmp11; /* phase 3 */ dataptr[4] = tmp10 - tmp11; - + z1 = MULTIPLY(tmp12 + tmp13, FIX_0_707106781); /* c4 */ - dataptr[2] = tmp13 + z1; /* phase 5 */ + dataptr[2] = tmp13 + z1; /* phase 5 */ dataptr[6] = tmp13 - z1; - + /* Odd part */ - tmp10 = tmp4 + tmp5; /* phase 2 */ + tmp10 = tmp4 + tmp5; /* phase 2 */ tmp11 = tmp5 + tmp6; tmp12 = tmp6 + tmp7; /* The rotator is modified from fig 4-8 to avoid extra negations. */ z5 = MULTIPLY(tmp10 - tmp12, FIX_0_382683433); /* c6 */ - z2 = MULTIPLY(tmp10, FIX_0_541196100) + z5; /* c2-c6 */ - z4 = MULTIPLY(tmp12, FIX_1_306562965) + z5; /* c2+c6 */ - z3 = MULTIPLY(tmp11, FIX_0_707106781); /* c4 */ + z2 = MULTIPLY(tmp10, FIX_0_541196100) + z5; /* c2-c6 */ + z4 = MULTIPLY(tmp12, FIX_1_306562965) + z5; /* c2+c6 */ + z3 = MULTIPLY(tmp11, FIX_0_707106781); /* c4 */ - z11 = tmp7 + z3; /* phase 5 */ + z11 = tmp7 + z3; /* phase 5 */ z13 = tmp7 - z3; - dataptr[5] = z13 + z2; /* phase 6 */ + dataptr[5] = z13 + z2; /* phase 6 */ dataptr[3] = z13 - z2; dataptr[1] = z11 + z4; dataptr[7] = z11 - z4; - dataptr += DCTSIZE; /* advance pointer to next row */ + dataptr += DCTSIZE; /* advance pointer to next row */ } } @@ -186,7 +186,7 @@ fdct_ifast (DCTELEM * data) SHIFT_TEMPS row_fdct(data); - + /* Pass 2: process columns. */ dataptr = data; @@ -199,24 +199,24 @@ fdct_ifast (DCTELEM * data) tmp5 = dataptr[DCTSIZE*2] - dataptr[DCTSIZE*5]; tmp3 = dataptr[DCTSIZE*3] + dataptr[DCTSIZE*4]; tmp4 = dataptr[DCTSIZE*3] - dataptr[DCTSIZE*4]; - + /* Even part */ - - tmp10 = tmp0 + tmp3; /* phase 2 */ + + tmp10 = tmp0 + tmp3; /* phase 2 */ tmp13 = tmp0 - tmp3; tmp11 = tmp1 + tmp2; tmp12 = tmp1 - tmp2; - + dataptr[DCTSIZE*0] = tmp10 + tmp11; /* phase 3 */ dataptr[DCTSIZE*4] = tmp10 - tmp11; - + z1 = MULTIPLY(tmp12 + tmp13, FIX_0_707106781); /* c4 */ dataptr[DCTSIZE*2] = tmp13 + z1; /* phase 5 */ dataptr[DCTSIZE*6] = tmp13 - z1; - + /* Odd part */ - tmp10 = tmp4 + tmp5; /* phase 2 */ + tmp10 = tmp4 + tmp5; /* phase 2 */ tmp11 = tmp5 + tmp6; tmp12 = tmp6 + tmp7; @@ -226,7 +226,7 @@ fdct_ifast (DCTELEM * data) z4 = MULTIPLY(tmp12, FIX_1_306562965) + z5; /* c2+c6 */ z3 = MULTIPLY(tmp11, FIX_0_707106781); /* c4 */ - z11 = tmp7 + z3; /* phase 5 */ + z11 = tmp7 + z3; /* phase 5 */ z13 = tmp7 - z3; dataptr[DCTSIZE*5] = z13 + z2; /* phase 6 */ @@ -234,7 +234,7 @@ fdct_ifast (DCTELEM * data) dataptr[DCTSIZE*1] = z11 + z4; dataptr[DCTSIZE*7] = z11 - z4; - dataptr++; /* advance pointer to next column */ + dataptr++; /* advance pointer to next column */ } } @@ -253,7 +253,7 @@ fdct_ifast248 (DCTELEM * data) SHIFT_TEMPS row_fdct(data); - + /* Pass 2: process columns. */ dataptr = data; @@ -268,15 +268,15 @@ fdct_ifast248 (DCTELEM * data) tmp7 = dataptr[DCTSIZE*6] - dataptr[DCTSIZE*7]; /* Even part */ - + tmp10 = tmp0 + tmp3; tmp11 = tmp1 + tmp2; tmp12 = tmp1 - tmp2; tmp13 = tmp0 - tmp3; - + dataptr[DCTSIZE*0] = tmp10 + tmp11; dataptr[DCTSIZE*4] = tmp10 - tmp11; - + z1 = MULTIPLY(tmp12 + tmp13, FIX_0_707106781); dataptr[DCTSIZE*2] = tmp13 + z1; dataptr[DCTSIZE*6] = tmp13 - z1; @@ -285,15 +285,15 @@ fdct_ifast248 (DCTELEM * data) tmp11 = tmp5 + tmp6; tmp12 = tmp5 - tmp6; tmp13 = tmp4 - tmp7; - + dataptr[DCTSIZE*1] = tmp10 + tmp11; dataptr[DCTSIZE*5] = tmp10 - tmp11; - + z1 = MULTIPLY(tmp12 + tmp13, FIX_0_707106781); dataptr[DCTSIZE*3] = tmp13 + z1; dataptr[DCTSIZE*7] = tmp13 - z1; - - dataptr++; /* advance pointer to next column */ + + dataptr++; /* advance pointer to next column */ } } |