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swscale: remove unused U/V arguments from yuv2rgb_write().

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Also document the function somewhat.
This commit is contained in:
Ronald S. Bultje 2012-01-04 19:48:02 -08:00
parent dff4af448d
commit 2ba65879b5
1 changed files with 13 additions and 5 deletions
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18
libswscale/swscale.c
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@ -884,9 +884,17 @@ YUV2PACKED16WRAPPER(yuv2, rgb48, rgb48le, PIX_FMT_RGB48LE)
YUV2PACKED16WRAPPER(yuv2, rgb48, bgr48be, PIX_FMT_BGR48BE)
YUV2PACKED16WRAPPER(yuv2, rgb48, bgr48le, PIX_FMT_BGR48LE)
/*
* Write out 2 RGB pixels in the target pixel format. This function takes a
* R/G/B LUT as generated by ff_yuv2rgb_c_init_tables(), which takes care of
* things like endianness conversion and shifting. The caller takes care of
* setting the correct offset in these tables from the chroma (U/V) values.
* This function then uses the luminance (Y1/Y2) values to write out the
* correct RGB values into the destination buffer.
*/
static av_always_inline void
yuv2rgb_write(uint8_t *_dest, int i, unsigned Y1, unsigned Y2,
unsigned U, unsigned V, unsigned A1, unsigned A2,
unsigned A1, unsigned A2,
const void *_r, const void *_g, const void *_b, int y,
enum PixelFormat target, int hasAlpha)
{
@ -1053,7 +1061,7 @@ yuv2rgb_X_c_template(SwsContext *c, const int16_t *lumFilter,
g = (c->table_gU[U] + c->table_gV[V]);
b = c->table_bU[U];
yuv2rgb_write(dest, i, Y1, Y2, U, V, hasAlpha ? A1 : 0, hasAlpha ? A2 : 0,
yuv2rgb_write(dest, i, Y1, Y2, hasAlpha ? A1 : 0, hasAlpha ? A2 : 0,
r, g, b, y, target, hasAlpha);
}
}
@ -1089,7 +1097,7 @@ yuv2rgb_2_c_template(SwsContext *c, const int16_t *buf[2],
A2 = (abuf0[i * 2 + 1] * yalpha1 + abuf1[i * 2 + 1] * yalpha) >> 19;
}
yuv2rgb_write(dest, i, Y1, Y2, U, V, hasAlpha ? A1 : 0, hasAlpha ? A2 : 0,
yuv2rgb_write(dest, i, Y1, Y2, hasAlpha ? A1 : 0, hasAlpha ? A2 : 0,
r, g, b, y, target, hasAlpha);
}
}
@ -1121,7 +1129,7 @@ yuv2rgb_1_c_template(SwsContext *c, const int16_t *buf0,
A2 = abuf0[i * 2 + 1] >> 7;
}
yuv2rgb_write(dest, i, Y1, Y2, U, V, hasAlpha ? A1 : 0, hasAlpha ? A2 : 0,
yuv2rgb_write(dest, i, Y1, Y2, hasAlpha ? A1 : 0, hasAlpha ? A2 : 0,
r, g, b, y, target, hasAlpha);
}
} else {
@ -1140,7 +1148,7 @@ yuv2rgb_1_c_template(SwsContext *c, const int16_t *buf0,
A2 = abuf0[i * 2 + 1] >> 7;
}
yuv2rgb_write(dest, i, Y1, Y2, U, V, hasAlpha ? A1 : 0, hasAlpha ? A2 : 0,
yuv2rgb_write(dest, i, Y1, Y2, hasAlpha ? A1 : 0, hasAlpha ? A2 : 0,
r, g, b, y, target, hasAlpha);
}
}