libavcodec/colorspace.h File Reference

Various defines for YUV<->RGB conversion. More...

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Defines

#define SCALEBITS   10
#define ONE_HALF   (1 << (SCALEBITS - 1))
#define FIX(x)   ((int) ((x) * (1<<SCALEBITS) + 0.5))
#define YUV_TO_RGB1_CCIR(cb1, cr1)
#define YUV_TO_RGB2_CCIR(r, g, b, y1)
#define YUV_TO_RGB1(cb1, cr1)
#define YUV_TO_RGB2(r, g, b, y1)
#define Y_CCIR_TO_JPEG(y)   cm[((y) * FIX(255.0/219.0) + (ONE_HALF - 16 * FIX(255.0/219.0))) >> SCALEBITS]
#define Y_JPEG_TO_CCIR(y)   (((y) * FIX(219.0/255.0) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS)
#define C_CCIR_TO_JPEG(y)   cm[(((y) - 128) * FIX(127.0/112.0) + (ONE_HALF + (128 << SCALEBITS))) >> SCALEBITS]
#define RGB_TO_Y(r, g, b)
#define RGB_TO_U(r1, g1, b1, shift)
#define RGB_TO_V(r1, g1, b1, shift)
#define RGB_TO_Y_CCIR(r, g, b)
#define RGB_TO_U_CCIR(r1, g1, b1, shift)
#define RGB_TO_V_CCIR(r1, g1, b1, shift)

Functions

static int C_JPEG_TO_CCIR (int y)


Detailed Description

Various defines for YUV<->RGB conversion.

Definition in file colorspace.h.


Define Documentation

#define C_CCIR_TO_JPEG (  )     cm[(((y) - 128) * FIX(127.0/112.0) + (ONE_HALF + (128 << SCALEBITS))) >> SCALEBITS]

Definition at line 75 of file colorspace.h.

#define FIX (  )     ((int) ((x) * (1<<SCALEBITS) + 0.5))

Definition at line 32 of file colorspace.h.

Referenced by C_JPEG_TO_CCIR(), idct32(), and rgb24_to_yuv420p().

#define ONE_HALF   (1 << (SCALEBITS - 1))

Definition at line 31 of file colorspace.h.

Referenced by C_JPEG_TO_CCIR(), and rgb24_to_yuv420p().

#define RGB_TO_U ( r1,
g1,
b1,
shift   ) 

Value:

(((- FIX(0.16874) * r1 - FIX(0.33126) * g1 +         \
     FIX(0.50000) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)

Definition at line 91 of file colorspace.h.

Referenced by opt_pad_color().

#define RGB_TO_U_CCIR ( r1,
g1,
b1,
shift   ) 

Value:

(((- FIX(0.16874*224.0/255.0) * r1 - FIX(0.33126*224.0/255.0) * g1 +         \
     FIX(0.50000*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)

Definition at line 103 of file colorspace.h.

Referenced by encode_dvb_subtitles(), and subtitle_thread().

#define RGB_TO_V ( r1,
g1,
b1,
shift   ) 

Value:

(((FIX(0.50000) * r1 - FIX(0.41869) * g1 -           \
   FIX(0.08131) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)

Definition at line 95 of file colorspace.h.

Referenced by opt_pad_color().

#define RGB_TO_V_CCIR ( r1,
g1,
b1,
shift   ) 

Value:

(((FIX(0.50000*224.0/255.0) * r1 - FIX(0.41869*224.0/255.0) * g1 -           \
   FIX(0.08131*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)

Definition at line 107 of file colorspace.h.

Referenced by encode_dvb_subtitles(), and subtitle_thread().

#define RGB_TO_Y ( r,
g,
 ) 

Value:

((FIX(0.29900) * (r) + FIX(0.58700) * (g) + \
  FIX(0.11400) * (b) + ONE_HALF) >> SCALEBITS)

Definition at line 87 of file colorspace.h.

Referenced by opt_pad_color().

#define RGB_TO_Y_CCIR ( r,
g,
 ) 

Value:

((FIX(0.29900*219.0/255.0) * (r) + FIX(0.58700*219.0/255.0) * (g) + \
  FIX(0.11400*219.0/255.0) * (b) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS)

Definition at line 99 of file colorspace.h.

Referenced by encode_dvb_subtitles(), and subtitle_thread().

#define SCALEBITS   10

Definition at line 30 of file colorspace.h.

Referenced by C_JPEG_TO_CCIR(), and rgb24_to_yuv420p().

#define Y_CCIR_TO_JPEG (  )     cm[((y) * FIX(255.0/219.0) + (ONE_HALF - 16 * FIX(255.0/219.0))) >> SCALEBITS]

Definition at line 69 of file colorspace.h.

#define Y_JPEG_TO_CCIR (  )     (((y) * FIX(219.0/255.0) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS)

Definition at line 72 of file colorspace.h.

#define YUV_TO_RGB1 ( cb1,
cr1   ) 

Value:

{\
    cb = (cb1) - 128;\
    cr = (cr1) - 128;\
    r_add = FIX(1.40200) * cr + ONE_HALF;\
    g_add = - FIX(0.34414) * cb - FIX(0.71414) * cr + ONE_HALF;\
    b_add = FIX(1.77200) * cb + ONE_HALF;\
}

Definition at line 52 of file colorspace.h.

Referenced by parse_palette_segment().

#define YUV_TO_RGB1_CCIR ( cb1,
cr1   ) 

Value:

{\
    cb = (cb1) - 128;\
    cr = (cr1) - 128;\
    r_add = FIX(1.40200*255.0/224.0) * cr + ONE_HALF;\
    g_add = - FIX(0.34414*255.0/224.0) * cb - FIX(0.71414*255.0/224.0) * cr + \
            ONE_HALF;\
    b_add = FIX(1.77200*255.0/224.0) * cb + ONE_HALF;\
}

Definition at line 34 of file colorspace.h.

Referenced by dvbsub_parse_clut_segment(), and yuv_a_to_rgba().

#define YUV_TO_RGB2 ( r,
g,
b,
y1   ) 

Value:

{\
    y = (y1) << SCALEBITS;\
    r = cm[(y + r_add) >> SCALEBITS];\
    g = cm[(y + g_add) >> SCALEBITS];\
    b = cm[(y + b_add) >> SCALEBITS];\
}

Definition at line 61 of file colorspace.h.

Referenced by parse_palette_segment().

#define YUV_TO_RGB2_CCIR ( r,
g,
b,
y1   ) 

Value:

{\
    y = ((y1) - 16) * FIX(255.0/219.0);\
    r = cm[(y + r_add) >> SCALEBITS];\
    g = cm[(y + g_add) >> SCALEBITS];\
    b = cm[(y + b_add) >> SCALEBITS];\
}

Definition at line 44 of file colorspace.h.

Referenced by dvbsub_parse_clut_segment(), and yuv_a_to_rgba().


Function Documentation

static int C_JPEG_TO_CCIR ( int  y  )  [inline, static]

Definition at line 79 of file colorspace.h.


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