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/*
* Copyright (C) 2013 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 "EmulatedCamera_JPEGStub"
#include <errno.h>
#include <cutils/log.h>
#include <YuvToJpegEncoder.h>
#include "JpegStub.h"
extern "C" void JpegStub_init(JpegStub* stub, int* strides) {
stub->mInternalEncoder = (void*) new Yuv420SpToJpegEncoder(strides);
stub->mInternalStream = (void*)new SkDynamicMemoryWStream();
}
extern "C" void JpegStub_cleanup(JpegStub* stub) {
delete((Yuv420SpToJpegEncoder*)stub->mInternalEncoder);
delete((SkDynamicMemoryWStream*)stub->mInternalStream);
}
extern "C" int JpegStub_compress(JpegStub* stub, const void* image,
int width, int height, int quality)
{
void* pY = const_cast<void*>(image);
int offsets[2];
offsets[0] = 0;
offsets[1] = width * height;
Yuv420SpToJpegEncoder* encoder =
(Yuv420SpToJpegEncoder*)stub->mInternalEncoder;
SkDynamicMemoryWStream* stream =
(SkDynamicMemoryWStream*)stub->mInternalStream;
if (encoder->encode(stream, pY, width, height, offsets, quality)) {
ALOGV("%s: Compressed JPEG: %d[%dx%d] -> %zu bytes",
__FUNCTION__, (width * height * 12) / 8,
width, height, stream->getOffset());
return 0;
} else {
ALOGE("%s: JPEG compression failed", __FUNCTION__);
return errno ? errno: EINVAL;
}
}
extern "C" void JpegStub_getCompressedImage(JpegStub* stub, void* buff) {
SkDynamicMemoryWStream* stream =
(SkDynamicMemoryWStream*)stub->mInternalStream;
stream->copyTo(buff);
}
extern "C" size_t JpegStub_getCompressedSize(JpegStub* stub) {
SkDynamicMemoryWStream* stream =
(SkDynamicMemoryWStream*)stub->mInternalStream;
return stream->getOffset();
}
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