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Diffstat (limited to 'media/libstagefright/filters/ZeroFilter.cpp')
-rw-r--r-- | media/libstagefright/filters/ZeroFilter.cpp | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/media/libstagefright/filters/ZeroFilter.cpp b/media/libstagefright/filters/ZeroFilter.cpp new file mode 100644 index 0000000..3f1243c --- /dev/null +++ b/media/libstagefright/filters/ZeroFilter.cpp @@ -0,0 +1,57 @@ +/* + * 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. + */ + +//#define LOG_NDEBUG 0 +#define LOG_TAG "ZeroFilter" + +#include <media/stagefright/foundation/ABuffer.h> +#include <media/stagefright/foundation/ADebug.h> +#include <media/stagefright/foundation/AMessage.h> + +#include "ZeroFilter.h" + +namespace android { + +status_t ZeroFilter::setParameters(const sp<AMessage> &msg) { + sp<AMessage> params; + CHECK(msg->findMessage("params", ¶ms)); + + int32_t invert; + if (params->findInt32("invert", &invert)) { + mInvertData = (invert != 0); + } + + return OK; +} + +status_t ZeroFilter::processBuffers( + const sp<ABuffer> &srcBuffer, const sp<ABuffer> &outBuffer) { + // assuming identical input & output buffers, since we're a copy filter + if (mInvertData) { + uint32_t* src = (uint32_t*)srcBuffer->data(); + uint32_t* dest = (uint32_t*)outBuffer->data(); + for (size_t i = 0; i < srcBuffer->size() / 4; ++i) { + *(dest++) = *(src++) ^ 0xFFFFFFFF; + } + } else { + memcpy(outBuffer->data(), srcBuffer->data(), srcBuffer->size()); + } + outBuffer->setRange(0, srcBuffer->size()); + + return OK; +} + +} // namespace android |