70 lines
2.3 KiB
C++
70 lines
2.3 KiB
C++
/*
|
|
* 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();
|
|
}
|