83ccff716f
The graphics JNI code is now separate from libandroid_runtime and it along with HWUI headers are no longer visible to targets outside the boundary of what is to become the UI mainline module The exposed headers to targets outside the module are now restriced to C APIs contained in the apex header directory. Bug: 137655431 Test: CtsUiRenderingTestCases Change-Id: I30d34055b6870dc1039f190a88f4a747cee17300
75 lines
2.6 KiB
C++
75 lines
2.6 KiB
C++
#ifndef _ANDROID_GRAPHICS_YUV_TO_JPEG_ENCODER_H_
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#define _ANDROID_GRAPHICS_YUV_TO_JPEG_ENCODER_H_
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#include "SkTypes.h"
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#include "SkStream.h"
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extern "C" {
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#include "jpeglib.h"
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#include "jerror.h"
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}
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class YuvToJpegEncoder {
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public:
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/** Create an encoder based on the YUV format.
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*
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* @param pixelFormat The yuv pixel format as defined in ui/PixelFormat.h.
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* @param strides The number of row bytes in each image plane.
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* @return an encoder based on the pixelFormat.
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*/
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static YuvToJpegEncoder* create(int pixelFormat, int* strides);
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explicit YuvToJpegEncoder(int* strides);
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/** Encode YUV data to jpeg, which is output to a stream.
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*
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* @param stream The jpeg output stream.
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* @param inYuv The input yuv data.
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* @param width Width of the the Yuv data in terms of pixels.
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* @param height Height of the Yuv data in terms of pixels.
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* @param offsets The offsets in each image plane with respect to inYuv.
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* @param jpegQuality Picture quality in [0, 100].
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* @return true if successfully compressed the stream.
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*/
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bool encode(SkWStream* stream, void* inYuv, int width,
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int height, int* offsets, int jpegQuality);
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virtual ~YuvToJpegEncoder() {}
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protected:
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int fNumPlanes;
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int* fStrides;
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void setJpegCompressStruct(jpeg_compress_struct* cinfo, int width,
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int height, int quality);
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virtual void configSamplingFactors(jpeg_compress_struct* cinfo) = 0;
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virtual void compress(jpeg_compress_struct* cinfo,
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uint8_t* yuv, int* offsets) = 0;
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};
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class Yuv420SpToJpegEncoder : public YuvToJpegEncoder {
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public:
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explicit Yuv420SpToJpegEncoder(int* strides);
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virtual ~Yuv420SpToJpegEncoder() {}
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private:
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void configSamplingFactors(jpeg_compress_struct* cinfo);
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void deinterleaveYuv(uint8_t* yuv, int width, int height,
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uint8_t*& yPlanar, uint8_t*& uPlanar, uint8_t*& vPlanar);
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void deinterleave(uint8_t* vuPlanar, uint8_t* uRows, uint8_t* vRows,
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int rowIndex, int width, int height);
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void compress(jpeg_compress_struct* cinfo, uint8_t* yuv, int* offsets);
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};
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class Yuv422IToJpegEncoder : public YuvToJpegEncoder {
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public:
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explicit Yuv422IToJpegEncoder(int* strides);
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virtual ~Yuv422IToJpegEncoder() {}
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private:
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void configSamplingFactors(jpeg_compress_struct* cinfo);
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void compress(jpeg_compress_struct* cinfo, uint8_t* yuv, int* offsets);
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void deinterleave(uint8_t* yuv, uint8_t* yRows, uint8_t* uRows,
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uint8_t* vRows, int rowIndex, int width, int height);
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};
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#endif // _ANDROID_GRAPHICS_YUV_TO_JPEG_ENCODER_H_
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