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Searched refs:contrast (Results 1 - 25 of 101) sorted by relevance

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/third_party/ffmpeg/libavfilter/
H A Daf_acontrast.c30 float contrast; member
32 int nb_samples, int channels, float contrast);
39 { "contrast", "set contrast", OFFSET(contrast), AV_OPT_TYPE_FLOAT, {.dbl=33}, 0, 100, A },
47 float contrast) in filter_flt()
57 dst[c] = sinf(d + contrast * sinf(d * 4)); in filter_flt()
67 float contrast) in filter_dbl()
77 dst[c] = sin(d + contrast * sin(d * 4)); in filter_dbl()
87 float contrast) in filter_fltp()
45 filter_flt(void **d, const void **s, int nb_samples, int channels, float contrast) filter_flt() argument
65 filter_dbl(void **d, const void **s, int nb_samples, int channels, float contrast) filter_dbl() argument
85 filter_fltp(void **d, const void **s, int nb_samples, int channels, float contrast) filter_fltp() argument
103 filter_dblp(void **d, const void **s, int nb_samples, int channels, float contrast) filter_dblp() argument
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H A Dvf_eq.h53 double brightness, contrast, gamma, gamma_weight; member
65 double contrast; member
106 int contrast = (int) (param->contrast * 256 * 16); in process_c() local
107 int brightness = ((int) (100.0 * param->brightness + 100.0) * 511) / 200 - 128 - contrast / 32; in process_c()
111 int pel = ((src[y * src_stride + x] * contrast) >> 12) + brightness; in process_c()
H A Dvf_eq.c45 v = param->contrast * (v - 0.5) + 0.5 + param->brightness; in create_lut()
79 if (param->contrast == 1.0 && param->brightness == 0.0 && param->gamma == 1.0) in check_values()
81 else if (param->gamma == 1.0 && fabs(param->contrast) < 7.9) in check_values()
89 eq->contrast = av_clipf(av_expr_eval(eq->contrast_pexpr, eq->var_values, eq), -1000.0, 1000.0); in set_contrast()
90 eq->param[0].contrast = eq->contrast; in set_contrast()
131 eq->param[i].contrast = eq->saturation; in set_saturation()
163 if ((ret = set_expr(&eq->contrast_pexpr, eq->contrast_expr, "contrast", ctx)) < 0 || in initialize()
290 SET_PARAM(contrast, contrast) in process_command()
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H A Davf_avectorscope.c66 int contrast[4]; member
90 { "rc", "set red contrast", OFFSET(contrast[0]), AV_OPT_TYPE_INT, {.i64=40}, 0, 255, TFLAGS },
91 { "gc", "set green contrast", OFFSET(contrast[1]), AV_OPT_TYPE_INT, {.i64=160}, 0, 255, TFLAGS },
92 { "bc", "set blue contrast", OFFSET(contrast[2]), AV_OPT_TYPE_INT, {.i64=80}, 0, 255, TFLAGS },
93 { "ac", "set alpha contrast", OFFSET(contrast[3]), AV_OPT_TYPE_INT, {.i64=255}, 0, 255, TFLAGS },
132 dst[0] = FFMIN(dst[0] + s->contrast[ in draw_dot()
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H A Davf_aphasemeter.c45 int contrast[4]; member
73 { "rc", "set red contrast", OFFSET(contrast[0]), AV_OPT_TYPE_INT, {.i64=2}, 0, 255, FLAGS },
74 { "gc", "set green contrast", OFFSET(contrast[1]), AV_OPT_TYPE_INT, {.i64=7}, 0, 255, FLAGS },
75 { "bc", "set blue contrast", OFFSET(contrast[2]), AV_OPT_TYPE_INT, {.i64=1}, 0, 255, FLAGS },
243 const int rc = s->contrast[0]; in filter_frame()
244 const int gc = s->contrast[1]; in filter_frame()
245 const int bc = s->contrast[ in filter_frame()
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H A Dvf_procamp_vaapi.c51 float contrast; member
95 /* contrast */ in procamp_vaapi_build_filter_params()
98 procamp_params[i].value = map(ctx->contrast, CONTRAST_MIN, CONTRAST_MAX, in procamp_vaapi_build_filter_params()
202 { "c", "Output video contrast",
203 OFFSET(contrast), AV_OPT_TYPE_FLOAT, { .dbl = CONTRAST_DEFAULT }, CONTRAST_MIN, CONTRAST_MAX, .flags = FLAGS },
204 { "contrast", "Output video contrast",
205 OFFSET(contrast), AV_OPT_TYPE_FLOAT, { .dbl = CONTRAST_DEFAULT }, CONTRAST_MIN, CONTRAST_MAX, .flags = FLAGS },
234 .description = NULL_IF_CONFIG_SMALL("ProcAmp (color balance) adjustments for hue, saturation, brightness, contrast"),
H A Dvf_deshake.c33 * - If contrast > threshold then find likely motion vector
80 { "contrast", "set contrast threshold for blocks", OFFSET(contrast), AV_OPT_TYPE_INT, {.i64=125}, 1, 255, .flags = FLAGS },
186 * Find the contrast of a given block. When searching for global motion we
187 * really only care about the high contrast blocks, so using this method we
241 int contrast; in find_motion() local
261 // If the contrast is too low, just skip this block as it probably in find_motion()
263 contrast = block_contrast(src2, x, y, stride, deshake->blocksize); in find_motion()
264 if (contrast > deshak in find_motion()
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/third_party/skia/modules/skottie/src/effects/
H A DBrightnessContrastEffect.cpp24 // The contrast effect transfer function can be approximated with the following
29 // where C is the normalized contrast value [-1..1].
33 // - start off with sampling the AE contrast effect for various contrast/input values [1]
36 // contrast values [2]
39 // * negative contrast appears clamped at -0.5 (-50)
40 // * a,b coefficients vary linearly vs. contrast
41 // * the b coefficient for max contrast (1.0) looks kinda familiar: 3.14757 - coincidence?
64 static sk_sp<SkData> make_contrast_coeffs(float contrast) { in make_contrast_coeffs() argument
67 coeffs.b = SK_ScalarPI * contrast; in make_contrast_coeffs()
185 contrast = SkTPin(fContrast , -100.0f, 100.0f) / 100; // [ -1 .. 1] makeLegacyCF() local
217 contrast = SkTPin(fContrast , -50.0f, 100.0f) / 100; // [-0.5 .. 1] makeCF() local
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/third_party/ffmpeg/libavfilter/x86/
H A Dvf_eq_init.c28 extern void ff_process_one_line_sse2(const uint8_t *src, uint8_t *dst, short contrast,
35 short contrast = (short) (param->contrast * 256 * 16); in process_sse2() local
37 / 200 - 128 - contrast / 32; in process_sse2()
40 ff_process_one_line_sse2(src, dst, contrast, brightness, w); in process_sse2()
/third_party/skia/src/gpu/text/
H A DGrDistanceFieldAdjustTable.cpp54 SkScalar contrast = SK_GAMMA_CONTRAST; in build_distance_adjust_table() local
56 SkScalar contrast = 0.5f; in build_distance_adjust_table() local
59 size = SkScalerContext::GetGammaLUTSize(contrast, paintGamma, deviceGamma, in build_distance_adjust_table()
66 if (!SkScalerContext::GetGammaLUTData(contrast, paintGamma, deviceGamma, data.get())) { in build_distance_adjust_table()
/third_party/skia/src/core/
H A DSkMaskGamma.cpp72 static float apply_contrast(float srca, float contrast) { in apply_contrast() argument
73 return srca + ((1.0f - srca) * contrast * srca); in apply_contrast()
76 void SkTMaskGamma_build_correcting_lut(uint8_t table[256], U8CPU srcI, SkScalar contrast, in SkTMaskGamma_build_correcting_lut() argument
89 const float adjustedContrast = SkScalarToFloat(contrast) * linDst; in SkTMaskGamma_build_correcting_lut()
H A DSkMaskGamma.h80 void SK_API SkTMaskGamma_build_correcting_lut(uint8_t table[256], U8CPU srcI, SkScalar contrast,
106 * @param contrast A value in the range [0.0, 1.0] which indicates the
107 * amount of artificial contrast to add.
111 SkTMaskGamma(SkScalar contrast, SkScalar paintGamma, SkScalar deviceGamma) : fIsLinear(false) { in SkTMaskGamma() argument
116 SkTMaskGamma_build_correcting_lut(fGammaTables[i], lum, contrast, in SkTMaskGamma()
H A DSkScalerContext.cpp54 // The primary filter is blur, for which contrast makes no sense, in PreprocessRec()
116 static const SkMaskGamma& cached_mask_gamma(SkScalar contrast, SkScalar paintGamma, in cached_mask_gamma() argument
119 if (0 == contrast && SK_Scalar1 == paintGamma && SK_Scalar1 == deviceGamma) { in cached_mask_gamma()
125 if (gContrast != contrast || gPaintGamma != paintGamma || gDeviceGamma != deviceGamma) { in cached_mask_gamma()
127 gMaskGamma = new SkMaskGamma(contrast, paintGamma, deviceGamma); in cached_mask_gamma()
128 gContrast = contrast; in cached_mask_gamma()
149 size_t SkScalerContext::GetGammaLUTSize(SkScalar contrast, SkScalar paintGamma, in GetGammaLUTSize() argument
152 const SkMaskGamma& maskGamma = cached_mask_gamma(contrast, in GetGammaLUTSize()
162 bool SkScalerContext::GetGammaLUTData(SkScalar contrast, SkScalar paintGamma, SkScalar deviceGamma, in GetGammaLUTData() argument
165 const SkMaskGamma& maskGamma = cached_mask_gamma(contrast, in GetGammaLUTData()
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/third_party/skia/include/effects/
H A DSkHighContrastFilter.h16 * Provides transformations to improve contrast for users with low vision.
35 SkScalar contrast) in SkHighContrastConfig()
38 fContrast(contrast) {} in SkHighContrastConfig()
54 // After grayscale and inverting, the contrast can be adjusted linearly.
60 * Color filter that provides transformations to improve contrast
68 * - Increasing the resulting contrast.
71 * not valid, e.g. if you try to call it with a contrast outside the range of
33 SkHighContrastConfig(bool grayscale, InvertStyle invertStyle, SkScalar contrast) SkHighContrastConfig() argument
/third_party/backends/backend/
H A Dplustek-usbmap.c70 /** adjust according to brightness and contrast
79 /* adjust brightness (b) and contrast (c) using the function: in usb_MapAdjust()
86 c = ((double)dev->scanning.sParam.contrast + 100.0)/100.0; in usb_MapAdjust()
90 DBG( _DBG_INFO, "* contrast = %i -> %.3f\n", in usb_MapAdjust()
91 dev->scanning.sParam.contrast, c); in usb_MapAdjust()
93 if( dev->scanning.sParam.brightness == 0 && dev->scanning.sParam.contrast ) in usb_MapAdjust()
131 /* do the brightness and contrast adjustment ... */ in usb_MapDownload()
H A Dricoh.c251 dev->info.contrast_default = wbuf.contrast; in attach()
253 dev->info.contrast_default = 256 - wbuf.contrast; in attach()
258 dev->info.contrast_default = wbuf.contrast; in attach()
291 DBG (5, "contrast=%d\n", dev->info.contrast_default); in attach()
443 /* contrast */ in init_options()
825 s->contrast = s->val[OPT_CONTRAST].w; in sane_start()
860 wbuf.contrast = (SANE_Byte) s->contrast; in sane_start()
862 wbuf.contrast = 256 - (SANE_Byte) s->contrast; in sane_start()
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H A Dsnapscan.c147 static void gamma_n (double gamma, int brightness, int contrast,
256 gamma_n (SANE_UNFIX(ps->gamma_gs), ps->bright, ps->contrast, gamma, ps->bpp, 1); in init_gamma()
259 gamma_n (SANE_UNFIX(ps->gamma_r), ps->bright, ps->contrast, gamma, ps->bpp, 1); in init_gamma()
262 gamma_n (SANE_UNFIX(ps->gamma_g), ps->bright, ps->contrast, gamma, ps->bpp, 1); in init_gamma()
265 gamma_n (SANE_UNFIX(ps->gamma_b), ps->bright, ps->contrast, gamma, ps->bpp, 1); in init_gamma()
290 static void gamma_n (double gamma, int brightness, int contrast, in gamma_n() argument
302 double val = (i - mid) * (1.0 + contrast / 100.0) in gamma_n()
1483 gamma_n (gamma_gs, pss->bright, pss->contrast, in download_gamma_tables()
1488 gamma_n (gamma_gs, pss->bright, pss->contrast, in download_gamma_tables()
1493 gamma_n (gamma_gs, pss->bright, pss->contrast, in download_gamma_tables()
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H A Dricoh.h240 SANE_Int contrast; member
280 SANE_Byte contrast; member
/third_party/libwebsockets/include/libwebsockets/
H A Dlws-display.h39 * way like set oled contrast. Either way, the pwm level is arrived at via a
46 int (*contrast)(const struct lws_display *disp, uint8_t contrast); member
/third_party/ffmpeg/libswscale/
H A Dswscale.h325 * @param contrast 16.16 fixed point contrast correction
335 int brightness, int contrast, int saturation);
346 int *brightness, int *contrast, int *saturation);
H A Dutils.c903 int brightness, int contrast, int saturation) in sws_setColorspaceDetails()
914 brightness, contrast, saturation); in sws_setColorspaceDetails()
934 c->contrast != contrast || in sws_setColorspaceDetails()
947 c->contrast = contrast; in sws_setColorspaceDetails()
961 return sws_setColorspaceDetails(c->cascaded_context[c->cascaded_mainindex],inv_table, srcRange,table, dstRange, brightness, contrast, saturation); in sws_setColorspaceDetails()
1019 brightness, contrast, saturation); in sws_setColorspaceDetails()
1044 contrast, saturation); in sws_setColorspaceDetails()
1049 contrast, saturatio in sws_setColorspaceDetails()
901 sws_setColorspaceDetails(struct SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation) sws_setColorspaceDetails() argument
1058 sws_getColorspaceDetails(struct SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation) sws_getColorspaceDetails() argument
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/third_party/mesa3d/src/gallium/frontends/xvmc/
H A Dattributes.c96 context_priv->procamp.contrast = value / 1000.0f + 1.0f; in XvMCSetAttribute()
140 *value = context_priv->procamp.contrast * 1000 - 1000; in XvMCGetAttribute()
/third_party/skia/tests/
H A DHighContrastFilterTest.cpp79 // Valid contrast in DEF_TEST()
80 for (float contrast : {0.5f, +1.0f, -1.0f}) { in DEF_TEST()
82 config.fContrast = contrast; in DEF_TEST()
88 // Invalid contrast in DEF_TEST()
/third_party/mesa3d/src/gallium/auxiliary/vl/
H A Dvl_csc.h38 float contrast; member
/third_party/ffmpeg/libswscale/ppc/
H A Dyuv2rgb_altivec.c84 * Integrated luma prescaling adjustment for saturation/contrast/brightness
601 int contrast, in ff_yuv2rgb_init_tables_ppc()
613 buf.tmp[0] = ((0xffffLL) * contrast >> 8) >> 9; // cy in ff_yuv2rgb_init_tables_ppc()
615 buf.tmp[2] = (inv_table[0] >> 3) * (contrast >> 16) * (saturation >> 16); // crv in ff_yuv2rgb_init_tables_ppc()
616 buf.tmp[3] = (inv_table[1] >> 3) * (contrast >> 16) * (saturation >> 16); // cbu in ff_yuv2rgb_init_tables_ppc()
617 buf.tmp[4] = -((inv_table[2] >> 1) * (contrast >> 16) * (saturation >> 16)); // cgu in ff_yuv2rgb_init_tables_ppc()
618 buf.tmp[5] = -((inv_table[3] >> 1) * (contrast >> 16) * (saturation >> 16)); // cgv in ff_yuv2rgb_init_tables_ppc()
598 ff_yuv2rgb_init_tables_ppc(SwsContext *c, const int inv_table[4], int brightness, int contrast, int saturation) ff_yuv2rgb_init_tables_ppc() argument

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