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libswscale: Extend the unaccelerated path of the unscaled yuv2rgb special

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converter with support for rgb444 output format.
Patch by Janusz Krzysztofik jkrzyszt chez tis icnet pl

Originally committed as revision 30841 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
This commit is contained in:
Janusz Krzysztofik 2010-03-05 08:32:54 +00:00 committed by Benoit Fouet
parent 2b7cf1678e
commit 601949b898
3 changed files with 59 additions and 1 deletions
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9
libswscale/swscale.c
View File

@ -27,7 +27,7 @@
{BGR,RGB}{1,4,8,15,16} support dithering
unscaled special converters (YV12=I420=IYUV, Y800=Y8)
YV12 -> {BGR,RGB}{1,4,8,15,16,24,32}
YV12 -> {BGR,RGB}{1,4,8,12,15,16,24,32}
x -> x
YUV9 -> YV12
YUV9/YV12 -> Y800
@ -198,6 +198,13 @@ DECLARE_ALIGNED(8, static const uint8_t, dither_2x2_8)[2][8]={
{ 0, 4, 0, 4, 0, 4, 0, 4, },
};
DECLARE_ALIGNED(8, const uint8_t, dither_4x4_16)[4][8]={
{ 8, 4, 11, 7, 8, 4, 11, 7, },
{ 2, 14, 1, 13, 2, 14, 1, 13, },
{ 10, 6, 9, 5, 10, 6, 9, 5, },
{ 0, 12, 3, 15, 0, 12, 3, 15, },
};
DECLARE_ALIGNED(8, const uint8_t, dither_8x8_32)[8][8]={
{ 17, 9, 23, 15, 16, 8, 22, 14, },
{ 5, 29, 3, 27, 4, 28, 2, 26, },

2
libswscale/swscale_internal.h
View File

@ -395,6 +395,7 @@ const char *sws_format_name(enum PixelFormat format);
|| (x)==PIX_FMT_RGB565LE \
|| (x)==PIX_FMT_RGB555BE \
|| (x)==PIX_FMT_RGB555LE \
|| (x)==PIX_FMT_RGB444 \
|| (x)==PIX_FMT_RGB8 \
|| (x)==PIX_FMT_RGB4 \
|| (x)==PIX_FMT_RGB4_BYTE \
@ -409,6 +410,7 @@ const char *sws_format_name(enum PixelFormat format);
|| (x)==PIX_FMT_BGR565LE \
|| (x)==PIX_FMT_BGR555BE \
|| (x)==PIX_FMT_BGR555LE \
|| (x)==PIX_FMT_BGR444 \
|| (x)==PIX_FMT_BGR8 \
|| (x)==PIX_FMT_BGR4 \
|| (x)==PIX_FMT_BGR4_BYTE \

49
libswscale/yuv2rgb.c
View File

@ -35,6 +35,7 @@
#include "libavutil/x86_cpu.h"
#include "libavutil/bswap.h"
extern const uint8_t dither_4x4_16[4][8];
extern const uint8_t dither_8x8_32[8][8];
extern const uint8_t dither_8x8_73[8][8];
extern const uint8_t dither_8x8_220[8][8];
@ -351,6 +352,32 @@ YUV2RGBFUNC(yuv2rgb_c_8, uint8_t, 0)
CLOSEYUV2RGBFUNC(8)
#endif
// r, g, b, dst_1, dst_2
YUV2RGBFUNC(yuv2rgb_c_12_ordered_dither, uint16_t, 0)
const uint8_t *d16 = dither_4x4_16[y&3];
#define PUTRGB12(dst,src,i,o) \
Y = src[2*i]; \
dst[2*i] = r[Y+d16[0+o]] + g[Y+d16[0+o]] + b[Y+d16[0+o]]; \
Y = src[2*i+1]; \
dst[2*i+1] = r[Y+d16[1+o]] + g[Y+d16[1+o]] + b[Y+d16[1+o]];
LOADCHROMA(0);
PUTRGB12(dst_1,py_1,0,0);
PUTRGB12(dst_2,py_2,0,0+8);
LOADCHROMA(1);
PUTRGB12(dst_2,py_2,1,2+8);
PUTRGB12(dst_1,py_1,1,2);
LOADCHROMA(2);
PUTRGB12(dst_1,py_1,2,4);
PUTRGB12(dst_2,py_2,2,4+8);
LOADCHROMA(3);
PUTRGB12(dst_2,py_2,3,6+8);
PUTRGB12(dst_1,py_1,3,6);
CLOSEYUV2RGBFUNC(8)
// r, g, b, dst_1, dst_2
YUV2RGBFUNC(yuv2rgb_c_8_ordered_dither, uint8_t, 0)
const uint8_t *d32 = dither_8x8_32[y&7];
@ -553,6 +580,8 @@ SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c)
case PIX_FMT_BGR565:
case PIX_FMT_RGB555:
case PIX_FMT_BGR555: return yuv2rgb_c_16;
case PIX_FMT_RGB444:
case PIX_FMT_BGR444: return yuv2rgb_c_12_ordered_dither;
case PIX_FMT_RGB8:
case PIX_FMT_BGR8: return yuv2rgb_c_8_ordered_dither;
case PIX_FMT_RGB4:
@ -601,6 +630,7 @@ av_cold int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4], int
|| c->dstFormat==PIX_FMT_RGB565LE
|| c->dstFormat==PIX_FMT_RGB555BE
|| c->dstFormat==PIX_FMT_RGB555LE
|| c->dstFormat==PIX_FMT_RGB444
|| c->dstFormat==PIX_FMT_RGB8
|| c->dstFormat==PIX_FMT_RGB4
|| c->dstFormat==PIX_FMT_RGB4_BYTE
@ -701,6 +731,25 @@ av_cold int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4], int
fill_table(c->table_bU, 1, cbu, y_table + yoffs + 2048);
fill_gv_table(c->table_gV, 1, cgv);
break;
case 12:
rbase = isRgb ? 8 : 0;
gbase = 4;
bbase = isRgb ? 0 : 8;
c->yuvTable = av_malloc(1024*3*2);
y_table16 = c->yuvTable;
yb = -(384<<16) - oy;
for (i = 0; i < 1024; i++) {
uint8_t yval = av_clip_uint8((yb + 0x8000) >> 16);
y_table16[i ] = (yval >> 4) << rbase;
y_table16[i+1024] = (yval >> 4) << gbase;
y_table16[i+2048] = (yval >> 4) << bbase;
yb += cy;
}
fill_table(c->table_rV, 2, crv, y_table16 + yoffs);
fill_table(c->table_gU, 2, cgu, y_table16 + yoffs + 1024);
fill_table(c->table_bU, 2, cbu, y_table16 + yoffs + 2048);
fill_gv_table(c->table_gV, 2, cgv);
break;
case 15:
case 16:
rbase = isRgb ? bpp - 5 : 0;