[FFmpeg-cvslog] dct: K&R formatting cosmetics
Aneesh Dogra
git at videolan.org
Wed Jan 4 01:39:32 CET 2012
ffmpeg | branch: master | Aneesh Dogra <lionaneesh at gmail.com> | Sun Jan 1 22:34:37 2012 +0530| [2e70b2de58c4505223f643723820d21fe398f2e9] | committer: Diego Biurrun
dct: K&R formatting cosmetics
Signed-off-by: Diego Biurrun <diego at biurrun.de>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=2e70b2de58c4505223f643723820d21fe398f2e9
---
libavcodec/dct.c | 122 +++++++++++++++++++++++++++---------------------------
1 files changed, 61 insertions(+), 61 deletions(-)
diff --git a/libavcodec/dct.c b/libavcodec/dct.c
index 5c63af3..e65671e 100644
--- a/libavcodec/dct.c
+++ b/libavcodec/dct.c
@@ -28,15 +28,16 @@
*/
#include <math.h>
+
#include "libavutil/mathematics.h"
#include "dct.h"
#include "dct32.h"
-/* sin((M_PI * x / (2*n)) */
-#define SIN(s,n,x) (s->costab[(n) - (x)])
+/* sin((M_PI * x / (2 * n)) */
+#define SIN(s, n, x) (s->costab[(n) - (x)])
-/* cos((M_PI * x / (2*n)) */
-#define COS(s,n,x) (s->costab[x])
+/* cos((M_PI * x / (2 * n)) */
+#define COS(s, n, x) (s->costab[x])
static void ff_dst_calc_I_c(DCTContext *ctx, FFTSample *data)
{
@@ -44,28 +45,28 @@ static void ff_dst_calc_I_c(DCTContext *ctx, FFTSample *data)
int i;
data[0] = 0;
- for(i = 1; i < n/2; i++) {
- float tmp1 = data[i ];
- float tmp2 = data[n - i];
- float s = SIN(ctx, n, 2*i);
-
- s *= tmp1 + tmp2;
- tmp1 = (tmp1 - tmp2) * 0.5f;
- data[i ] = s + tmp1;
- data[n - i] = s - tmp1;
+ for (i = 1; i < n / 2; i++) {
+ float tmp1 = data[i ];
+ float tmp2 = data[n - i];
+ float s = SIN(ctx, n, 2 * i);
+
+ s *= tmp1 + tmp2;
+ tmp1 = (tmp1 - tmp2) * 0.5f;
+ data[i] = s + tmp1;
+ data[n - i] = s - tmp1;
}
- data[n/2] *= 2;
+ data[n / 2] *= 2;
ctx->rdft.rdft_calc(&ctx->rdft, data);
data[0] *= 0.5f;
- for(i = 1; i < n-2; i += 2) {
- data[i + 1] += data[i - 1];
- data[i ] = -data[i + 2];
+ for (i = 1; i < n - 2; i += 2) {
+ data[i + 1] += data[i - 1];
+ data[i] = -data[i + 2];
}
- data[n-1] = 0;
+ data[n - 1] = 0;
}
static void ff_dct_calc_I_c(DCTContext *ctx, FFTSample *data)
@@ -74,19 +75,19 @@ static void ff_dct_calc_I_c(DCTContext *ctx, FFTSample *data)
int i;
float next = -0.5f * (data[0] - data[n]);
- for(i = 0; i < n/2; i++) {
- float tmp1 = data[i ];
+ for (i = 0; i < n / 2; i++) {
+ float tmp1 = data[i];
float tmp2 = data[n - i];
- float s = SIN(ctx, n, 2*i);
- float c = COS(ctx, n, 2*i);
+ float s = SIN(ctx, n, 2 * i);
+ float c = COS(ctx, n, 2 * i);
c *= tmp1 - tmp2;
s *= tmp1 - tmp2;
next += c;
- tmp1 = (tmp1 + tmp2) * 0.5f;
- data[i ] = tmp1 - s;
+ tmp1 = (tmp1 + tmp2) * 0.5f;
+ data[i] = tmp1 - s;
data[n - i] = tmp1 + s;
}
@@ -94,7 +95,7 @@ static void ff_dct_calc_I_c(DCTContext *ctx, FFTSample *data)
data[n] = data[1];
data[1] = next;
- for(i = 3; i <= n; i += 2)
+ for (i = 3; i <= n; i += 2)
data[i] = data[i - 2] - data[i];
}
@@ -103,16 +104,16 @@ static void ff_dct_calc_III_c(DCTContext *ctx, FFTSample *data)
int n = 1 << ctx->nbits;
int i;
- float next = data[n - 1];
+ float next = data[n - 1];
float inv_n = 1.0f / n;
for (i = n - 2; i >= 2; i -= 2) {
- float val1 = data[i ];
+ float val1 = data[i];
float val2 = data[i - 1] - data[i + 1];
- float c = COS(ctx, n, i);
- float s = SIN(ctx, n, i);
+ float c = COS(ctx, n, i);
+ float s = SIN(ctx, n, i);
- data[i ] = c * val1 + s * val2;
+ data[i] = c * val1 + s * val2;
data[i + 1] = s * val1 - c * val2;
}
@@ -121,13 +122,13 @@ static void ff_dct_calc_III_c(DCTContext *ctx, FFTSample *data)
ctx->rdft.rdft_calc(&ctx->rdft, data);
for (i = 0; i < n / 2; i++) {
- float tmp1 = data[i ] * inv_n;
+ float tmp1 = data[i] * inv_n;
float tmp2 = data[n - i - 1] * inv_n;
- float csc = ctx->csc2[i] * (tmp1 - tmp2);
+ float csc = ctx->csc2[i] * (tmp1 - tmp2);
- tmp1 += tmp2;
- data[i ] = tmp1 + csc;
- data[n - i - 1] = tmp1 - csc;
+ tmp1 += tmp2;
+ data[i] = tmp1 + csc;
+ data[n - i - 1] = tmp1 - csc;
}
}
@@ -137,34 +138,33 @@ static void ff_dct_calc_II_c(DCTContext *ctx, FFTSample *data)
int i;
float next;
- for (i=0; i < n/2; i++) {
- float tmp1 = data[i ];
+ for (i = 0; i < n / 2; i++) {
+ float tmp1 = data[i];
float tmp2 = data[n - i - 1];
- float s = SIN(ctx, n, 2*i + 1);
+ float s = SIN(ctx, n, 2 * i + 1);
- s *= tmp1 - tmp2;
- tmp1 = (tmp1 + tmp2) * 0.5f;
+ s *= tmp1 - tmp2;
+ tmp1 = (tmp1 + tmp2) * 0.5f;
- data[i ] = tmp1 + s;
+ data[i] = tmp1 + s;
data[n-i-1] = tmp1 - s;
}
ctx->rdft.rdft_calc(&ctx->rdft, data);
- next = data[1] * 0.5;
+ next = data[1] * 0.5;
data[1] *= -1;
for (i = n - 2; i >= 0; i -= 2) {
float inr = data[i ];
float ini = data[i + 1];
- float c = COS(ctx, n, i);
- float s = SIN(ctx, n, i);
+ float c = COS(ctx, n, i);
+ float s = SIN(ctx, n, i);
- data[i ] = c * inr + s * ini;
+ data[i] = c * inr + s * ini;
+ data[i + 1] = next;
- data[i+1] = next;
-
- next += s * inr - c * ini;
+ next += s * inr - c * ini;
}
}
@@ -180,36 +180,36 @@ av_cold int ff_dct_init(DCTContext *s, int nbits, enum DCTTransformType inverse)
memset(s, 0, sizeof(*s));
- s->nbits = nbits;
- s->inverse = inverse;
+ s->nbits = nbits;
+ s->inverse = inverse;
if (inverse == DCT_II && nbits == 5) {
s->dct_calc = dct32_func;
} else {
- ff_init_ff_cos_tabs(nbits+2);
-
- s->costab = ff_cos_tabs[nbits+2];
+ ff_init_ff_cos_tabs(nbits + 2);
- s->csc2 = av_malloc(n/2 * sizeof(FFTSample));
+ s->costab = ff_cos_tabs[nbits + 2];
+ s->csc2 = av_malloc(n / 2 * sizeof(FFTSample));
if (ff_rdft_init(&s->rdft, nbits, inverse == DCT_III) < 0) {
av_free(s->csc2);
return -1;
}
- for (i = 0; i < n/2; i++)
- s->csc2[i] = 0.5 / sin((M_PI / (2*n) * (2*i + 1)));
+ for (i = 0; i < n / 2; i++)
+ s->csc2[i] = 0.5 / sin((M_PI / (2 * n) * (2 * i + 1)));
- switch(inverse) {
- case DCT_I : s->dct_calc = ff_dct_calc_I_c; break;
- case DCT_II : s->dct_calc = ff_dct_calc_II_c ; break;
+ switch (inverse) {
+ case DCT_I : s->dct_calc = ff_dct_calc_I_c; break;
+ case DCT_II : s->dct_calc = ff_dct_calc_II_c; break;
case DCT_III: s->dct_calc = ff_dct_calc_III_c; break;
- case DST_I : s->dct_calc = ff_dst_calc_I_c; break;
+ case DST_I : s->dct_calc = ff_dst_calc_I_c; break;
}
}
s->dct32 = ff_dct32_float;
- if (HAVE_MMX) ff_dct_init_mmx(s);
+ if (HAVE_MMX)
+ ff_dct_init_mmx(s);
return 0;
}
More information about the ffmpeg-cvslog
mailing list