#ifndef YuvToJpegEncoder_DEFINED
#define YuvToJpegEncoder_DEFINED

extern "C" {
    #include "jpeglib.h"
    #include "jerror.h"
}

class YuvToJpegEncoder {
public:
    /** Create an encoder based on the YUV format.
     *
     *  @param pixelFormat The yuv pixel format as defined in ui/PixelFormat.h.
     *  @param strides The number of row bytes in each image plane.
     *  @return an encoder based on the pixelFormat.
     */
    static YuvToJpegEncoder* create(int* strides);

    YuvToJpegEncoder(int* strides);

    /** Encode YUV data to jpeg,  which is output to a stream.
     *
     *  @param dest The jpeg output stream.
     *  @param inYuv The input yuv data.
     *  @param width Width of the the Yuv data in terms of pixels.
     *  @param height Height of the Yuv data in terms of pixels.
     *  @param offsets The offsets in each image plane with respect to inYuv.
     *  @param jpegQuality Picture quality in [0, 100].
     *  @return true if successfully compressed the stream.
     */
    bool encode(unsigned char* dest, void* inYuv, int width,
        int height, int* offsets, int jpegQuality);

    virtual ~YuvToJpegEncoder() {}

protected:
    int fNumPlanes;
    int* fStrides;
    void setJpegCompressStruct(jpeg_compress_struct* cinfo, int width,
            int height, int quality);
    virtual void configSamplingFactors(jpeg_compress_struct* cinfo) = 0;
    virtual void compress(jpeg_compress_struct* cinfo,
            uint8_t* yuv, int* offsets) = 0;
};

class Yuv420SpToJpegEncoder : public YuvToJpegEncoder {
public:
     Yuv420SpToJpegEncoder(int* strides);
     virtual ~Yuv420SpToJpegEncoder() {}

private:
     void configSamplingFactors(jpeg_compress_struct* cinfo);
     void deinterleaveYuv(uint8_t* yuv, int width, int height,
            uint8_t*& yPlanar, uint8_t*& uPlanar, uint8_t*& vPlanar);
     void deinterleave(uint8_t* vuPlanar, uint8_t* uRows, uint8_t* vRows,
             int rowIndex, int width);
     void compress(jpeg_compress_struct* cinfo, uint8_t* yuv, int* offsets);
};

#endif