diff options
Diffstat (limited to 'media/libstagefright/filters/saturation.rs')
-rw-r--r-- | media/libstagefright/filters/saturation.rs | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/media/libstagefright/filters/saturation.rs b/media/libstagefright/filters/saturation.rs new file mode 100644 index 0000000..2c867ac --- /dev/null +++ b/media/libstagefright/filters/saturation.rs @@ -0,0 +1,40 @@ +// Sample script for RGB888 support (compare to saturationARGB.rs) +/* + * Copyright (C) 2014 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#pragma version(1) +#pragma rs java_package_name(com.android.rs.cppbasic) +#pragma rs_fp_relaxed + +const static float3 gMonoMult = {0.299f, 0.587f, 0.114f}; + +// global variables (parameters accessible to application code) +float gSaturation = 1.0f; + +void root(const uchar3 *v_in, uchar3 *v_out) { + // scale 0-255 uchar to 0-1.0 float + float3 in = {v_in->r * 0.003921569f, v_in->g * 0.003921569f, + v_in->b * 0.003921569f}; + + // apply saturation filter + float3 result = dot(in, gMonoMult); + result = mix(result, in, gSaturation); + + // convert to uchar, copied from rsPackColorTo8888 + v_out->x = (uchar)clamp((result.r * 255.f + 0.5f), 0.f, 255.f); + v_out->y = (uchar)clamp((result.g * 255.f + 0.5f), 0.f, 255.f); + v_out->z = (uchar)clamp((result.b * 255.f + 0.5f), 0.f, 255.f); +} |