[FFmpeg-devel] [PATCH] Swscale YUV2RGB table generator
Kostya
kostya.shishkov
Sun Feb 8 19:27:49 CET 2009
Here's LGPLed version of YUV2RGB tables generator.
While it may be not perfect, it seems to work.
Please test and/or give your comments.
-------------- next part --------------
Index: Makefile
===================================================================
--- Makefile (revision 28473)
+++ Makefile (working copy)
@@ -5,10 +5,9 @@
HEADERS = swscale.h
-OBJS = rgb2rgb.o swscale.o swscale_avoption.o
+OBJS = rgb2rgb.o swscale.o swscale_avoption.o yuv2rgb2.o
OBJS-$(ARCH_BFIN) += internal_bfin.o swscale_bfin.o yuv2rgb_bfin.o
-OBJS-$(CONFIG_GPL) += yuv2rgb.o
OBJS-$(CONFIG_MLIB) += yuv2rgb_mlib.o
OBJS-$(HAVE_ALTIVEC) += yuv2rgb_altivec.o
OBJS-$(HAVE_VIS) += yuv2rgb_vis.o
Index: yuv2rgb2.c
===================================================================
--- yuv2rgb2.c (revision 0)
+++ yuv2rgb2.c (revision 0)
@@ -0,0 +1,740 @@
+/*
+ * yuv2rgb2.c, Software YUV to RGB converter
+ *
+ * Copyright (C) 2009, Konstantin Shishkov
+ *
+ * MMX/MMX2 template stuff (needed for fast movntq support),
+ * 1,4,8bpp support and context / deglobalize stuff
+ * by Michael Niedermayer (michaelni at gmx.at)
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <inttypes.h>
+#include <assert.h>
+
+#include "config.h"
+#include "rgb2rgb.h"
+#include "swscale.h"
+#include "swscale_internal.h"
+
+#define DITHER1XBPP // only for MMX
+
+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];
+
+#if HAVE_MMX
+
+/* hope these constant values are cache line aligned */
+DECLARE_ASM_CONST(8, uint64_t, mmx_00ffw) = 0x00ff00ff00ff00ffULL;
+DECLARE_ASM_CONST(8, uint64_t, mmx_redmask) = 0xf8f8f8f8f8f8f8f8ULL;
+DECLARE_ASM_CONST(8, uint64_t, mmx_grnmask) = 0xfcfcfcfcfcfcfcfcULL;
+
+//MMX versions
+#undef RENAME
+#undef HAVE_MMX2
+#undef HAVE_AMD3DNOW
+#define HAVE_MMX2 0
+#define HAVE_AMD3DNOW 0
+#define RENAME(a) a ## _MMX
+#include "yuv2rgb_template.c"
+
+//MMX2 versions
+#undef RENAME
+#undef HAVE_MMX2
+#define HAVE_MMX2 1
+#define RENAME(a) a ## _MMX2
+#include "yuv2rgb_template.c"
+
+#endif /* HAVE_MMX */
+
+const int32_t Inverse_Table_6_9[8][4] = {
+ {117504, 138453, 13954, 34903}, /* no sequence_display_extension */
+ {117504, 138453, 13954, 34903}, /* ITU-R Rec. 709 (1990) */
+ {104597, 132201, 25675, 53279}, /* unspecified */
+ {104597, 132201, 25675, 53279}, /* reserved */
+ {104448, 132798, 24759, 53109}, /* FCC */
+ {104597, 132201, 25675, 53279}, /* ITU-R Rec. 624-4 System B, G */
+ {104597, 132201, 25675, 53279}, /* SMPTE 170M */
+ {117579, 136230, 16907, 35559} /* SMPTE 240M (1987) */
+};
+
+#define RGB(i) \
+ U = pu[i]; \
+ V = pv[i]; \
+ r = (void *)c->table_rV[V]; \
+ g = (void *)(c->table_gU[U] + c->table_gV[V]); \
+ b = (void *)c->table_bU[U];
+
+#define DST1(i) \
+ Y = py_1[2*i]; \
+ dst_1[2*i] = r[Y] + g[Y] + b[Y]; \
+ Y = py_1[2*i+1]; \
+ dst_1[2*i+1] = r[Y] + g[Y] + b[Y];
+
+#define DST2(i) \
+ Y = py_2[2*i]; \
+ dst_2[2*i] = r[Y] + g[Y] + b[Y]; \
+ Y = py_2[2*i+1]; \
+ dst_2[2*i+1] = r[Y] + g[Y] + b[Y];
+
+#define DST1RGB(i) \
+ Y = py_1[2*i]; \
+ dst_1[6*i] = r[Y]; dst_1[6*i+1] = g[Y]; dst_1[6*i+2] = b[Y]; \
+ Y = py_1[2*i+1]; \
+ dst_1[6*i+3] = r[Y]; dst_1[6*i+4] = g[Y]; dst_1[6*i+5] = b[Y];
+
+#define DST2RGB(i) \
+ Y = py_2[2*i]; \
+ dst_2[6*i] = r[Y]; dst_2[6*i+1] = g[Y]; dst_2[6*i+2] = b[Y]; \
+ Y = py_2[2*i+1]; \
+ dst_2[6*i+3] = r[Y]; dst_2[6*i+4] = g[Y]; dst_2[6*i+5] = b[Y];
+
+#define DST1BGR(i) \
+ Y = py_1[2*i]; \
+ dst_1[6*i] = b[Y]; dst_1[6*i+1] = g[Y]; dst_1[6*i+2] = r[Y]; \
+ Y = py_1[2*i+1]; \
+ dst_1[6*i+3] = b[Y]; dst_1[6*i+4] = g[Y]; dst_1[6*i+5] = r[Y];
+
+#define DST2BGR(i) \
+ Y = py_2[2*i]; \
+ dst_2[6*i] = b[Y]; dst_2[6*i+1] = g[Y]; dst_2[6*i+2] = r[Y]; \
+ Y = py_2[2*i+1]; \
+ dst_2[6*i+3] = b[Y]; dst_2[6*i+4] = g[Y]; dst_2[6*i+5] = r[Y];
+
+#define PROLOG(func_name, dst_type) \
+static int func_name(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY, \
+ int srcSliceH, uint8_t* dst[], int dstStride[]){\
+ int y;\
+\
+ if (c->srcFormat == PIX_FMT_YUV422P){\
+ srcStride[1] *= 2;\
+ srcStride[2] *= 2;\
+ }\
+ for (y=0; y<srcSliceH; y+=2){\
+ dst_type *dst_1= (dst_type*)(dst[0] + (y+srcSliceY )*dstStride[0]);\
+ dst_type *dst_2= (dst_type*)(dst[0] + (y+srcSliceY+1)*dstStride[0]);\
+ dst_type av_unused *r, *b;\
+ dst_type *g;\
+ uint8_t *py_1= src[0] + y*srcStride[0];\
+ uint8_t *py_2= py_1 + srcStride[0];\
+ uint8_t *pu= src[1] + (y>>1)*srcStride[1];\
+ uint8_t *pv= src[2] + (y>>1)*srcStride[2];\
+ unsigned int h_size= c->dstW>>3;\
+ while (h_size--) {\
+ int av_unused U, V;\
+ int Y;\
+
+#define EPILOG1(dst_delta)\
+ pu += 4;\
+ pv += 4;\
+ py_1 += 8;\
+ py_2 += 8;\
+ dst_1 += dst_delta;\
+ dst_2 += dst_delta;\
+ }\
+ if (c->dstW & 4) {\
+ int av_unused Y, U, V;\
+
+#define EPILOG2()\
+ }\
+ }\
+ return srcSliceH;\
+}
+
+#define EPILOG(dst_delta)\
+ EPILOG1(dst_delta)\
+ EPILOG2()
+
+PROLOG(yuv2rgb_c_32, uint32_t)
+ RGB(0);
+ DST1(0);
+ DST2(0);
+
+ RGB(1);
+ DST2(1);
+ DST1(1);
+
+ RGB(2);
+ DST1(2);
+ DST2(2);
+
+ RGB(3);
+ DST2(3);
+ DST1(3);
+EPILOG1(8)
+ RGB(0);
+ DST1(0);
+ DST2(0);
+
+ RGB(1);
+ DST2(1);
+ DST1(1);
+EPILOG2()
+
+PROLOG(yuv2rgb_c_24_rgb, uint8_t)
+ RGB(0);
+ DST1RGB(0);
+ DST2RGB(0);
+
+ RGB(1);
+ DST2RGB(1);
+ DST1RGB(1);
+
+ RGB(2);
+ DST1RGB(2);
+ DST2RGB(2);
+
+ RGB(3);
+ DST2RGB(3);
+ DST1RGB(3);
+EPILOG1(24)
+ RGB(0);
+ DST1RGB(0);
+ DST2RGB(0);
+
+ RGB(1);
+ DST2RGB(1);
+ DST1RGB(1);
+EPILOG2()
+
+// only trivial mods from yuv2rgb_c_24_rgb
+PROLOG(yuv2rgb_c_24_bgr, uint8_t)
+ RGB(0);
+ DST1BGR(0);
+ DST2BGR(0);
+
+ RGB(1);
+ DST2BGR(1);
+ DST1BGR(1);
+
+ RGB(2);
+ DST1BGR(2);
+ DST2BGR(2);
+
+ RGB(3);
+ DST2BGR(3);
+ DST1BGR(3);
+EPILOG1(24)
+ RGB(0);
+ DST1BGR(0);
+ DST2BGR(0);
+
+ RGB(1);
+ DST2BGR(1);
+ DST1BGR(1);
+EPILOG2()
+
+// This is exactly the same code as yuv2rgb_c_32 except for the types of
+// r, g, b, dst_1, dst_2
+PROLOG(yuv2rgb_c_16, uint16_t)
+ RGB(0);
+ DST1(0);
+ DST2(0);
+
+ RGB(1);
+ DST2(1);
+ DST1(1);
+
+ RGB(2);
+ DST1(2);
+ DST2(2);
+
+ RGB(3);
+ DST2(3);
+ DST1(3);
+EPILOG(8)
+
+// This is exactly the same code as yuv2rgb_c_32 except for the types of
+// r, g, b, dst_1, dst_2
+PROLOG(yuv2rgb_c_8, uint8_t)
+ RGB(0);
+ DST1(0);
+ DST2(0);
+
+ RGB(1);
+ DST2(1);
+ DST1(1);
+
+ RGB(2);
+ DST1(2);
+ DST2(2);
+
+ RGB(3);
+ DST2(3);
+ DST1(3);
+EPILOG(8)
+
+// r, g, b, dst_1, dst_2
+PROLOG(yuv2rgb_c_8_ordered_dither, uint8_t)
+ const uint8_t *d32= dither_8x8_32[y&7];
+ const uint8_t *d64= dither_8x8_73[y&7];
+#define DST1bpp8(i,o) \
+ Y = py_1[2*i]; \
+ dst_1[2*i] = r[Y+d32[0+o]] + g[Y+d32[0+o]] + b[Y+d64[0+o]]; \
+ Y = py_1[2*i+1]; \
+ dst_1[2*i+1] = r[Y+d32[1+o]] + g[Y+d32[1+o]] + b[Y+d64[1+o]];
+
+#define DST2bpp8(i,o) \
+ Y = py_2[2*i]; \
+ dst_2[2*i] = r[Y+d32[8+o]] + g[Y+d32[8+o]] + b[Y+d64[8+o]]; \
+ Y = py_2[2*i+1]; \
+ dst_2[2*i+1] = r[Y+d32[9+o]] + g[Y+d32[9+o]] + b[Y+d64[9+o]];
+
+
+ RGB(0);
+ DST1bpp8(0,0);
+ DST2bpp8(0,0);
+
+ RGB(1);
+ DST2bpp8(1,2);
+ DST1bpp8(1,2);
+
+ RGB(2);
+ DST1bpp8(2,4);
+ DST2bpp8(2,4);
+
+ RGB(3);
+ DST2bpp8(3,6);
+ DST1bpp8(3,6);
+EPILOG(8)
+
+
+// This is exactly the same code as yuv2rgb_c_32 except for the types of
+// r, g, b, dst_1, dst_2
+PROLOG(yuv2rgb_c_4, uint8_t)
+ int acc;
+#define DST1_4(i) \
+ Y = py_1[2*i]; \
+ acc = r[Y] + g[Y] + b[Y]; \
+ Y = py_1[2*i+1]; \
+ acc |= (r[Y] + g[Y] + b[Y])<<4; \
+ dst_1[i] = acc;
+
+#define DST2_4(i) \
+ Y = py_2[2*i]; \
+ acc = r[Y] + g[Y] + b[Y]; \
+ Y = py_2[2*i+1]; \
+ acc |= (r[Y] + g[Y] + b[Y])<<4; \
+ dst_2[i] = acc;
+
+ RGB(0);
+ DST1_4(0);
+ DST2_4(0);
+
+ RGB(1);
+ DST2_4(1);
+ DST1_4(1);
+
+ RGB(2);
+ DST1_4(2);
+ DST2_4(2);
+
+ RGB(3);
+ DST2_4(3);
+ DST1_4(3);
+EPILOG(4)
+
+PROLOG(yuv2rgb_c_4_ordered_dither, uint8_t)
+ const uint8_t *d64= dither_8x8_73[y&7];
+ const uint8_t *d128=dither_8x8_220[y&7];
+ int acc;
+
+#define DST1bpp4(i,o) \
+ Y = py_1[2*i]; \
+ acc = r[Y+d128[0+o]] + g[Y+d64[0+o]] + b[Y+d128[0+o]]; \
+ Y = py_1[2*i+1]; \
+ acc |= (r[Y+d128[1+o]] + g[Y+d64[1+o]] + b[Y+d128[1+o]])<<4; \
+ dst_1[i]= acc;
+
+#define DST2bpp4(i,o) \
+ Y = py_2[2*i]; \
+ acc = r[Y+d128[8+o]] + g[Y+d64[8+o]] + b[Y+d128[8+o]]; \
+ Y = py_2[2*i+1]; \
+ acc |= (r[Y+d128[9+o]] + g[Y+d64[9+o]] + b[Y+d128[9+o]])<<4; \
+ dst_2[i]= acc;
+
+
+ RGB(0);
+ DST1bpp4(0,0);
+ DST2bpp4(0,0);
+
+ RGB(1);
+ DST2bpp4(1,2);
+ DST1bpp4(1,2);
+
+ RGB(2);
+ DST1bpp4(2,4);
+ DST2bpp4(2,4);
+
+ RGB(3);
+ DST2bpp4(3,6);
+ DST1bpp4(3,6);
+EPILOG(4)
+
+// This is exactly the same code as yuv2rgb_c_32 except for the types of
+// r, g, b, dst_1, dst_2
+PROLOG(yuv2rgb_c_4b, uint8_t)
+ RGB(0);
+ DST1(0);
+ DST2(0);
+
+ RGB(1);
+ DST2(1);
+ DST1(1);
+
+ RGB(2);
+ DST1(2);
+ DST2(2);
+
+ RGB(3);
+ DST2(3);
+ DST1(3);
+EPILOG(8)
+
+PROLOG(yuv2rgb_c_4b_ordered_dither, uint8_t)
+ const uint8_t *d64= dither_8x8_73[y&7];
+ const uint8_t *d128=dither_8x8_220[y&7];
+
+#define DST1bpp4b(i,o) \
+ Y = py_1[2*i]; \
+ dst_1[2*i] = r[Y+d128[0+o]] + g[Y+d64[0+o]] + b[Y+d128[0+o]]; \
+ Y = py_1[2*i+1]; \
+ dst_1[2*i+1] = r[Y+d128[1+o]] + g[Y+d64[1+o]] + b[Y+d128[1+o]];
+
+#define DST2bpp4b(i,o) \
+ Y = py_2[2*i]; \
+ dst_2[2*i] = r[Y+d128[8+o]] + g[Y+d64[8+o]] + b[Y+d128[8+o]]; \
+ Y = py_2[2*i+1]; \
+ dst_2[2*i+1] = r[Y+d128[9+o]] + g[Y+d64[9+o]] + b[Y+d128[9+o]];
+
+
+ RGB(0);
+ DST1bpp4b(0,0);
+ DST2bpp4b(0,0);
+
+ RGB(1);
+ DST2bpp4b(1,2);
+ DST1bpp4b(1,2);
+
+ RGB(2);
+ DST1bpp4b(2,4);
+ DST2bpp4b(2,4);
+
+ RGB(3);
+ DST2bpp4b(3,6);
+ DST1bpp4b(3,6);
+EPILOG(8)
+
+PROLOG(yuv2rgb_c_1_ordered_dither, uint8_t)
+ const uint8_t *d128=dither_8x8_220[y&7];
+ char out_1=0, out_2=0;
+ g= c->table_gU[128] + c->table_gV[128];
+
+#define DST1bpp1(i,o) \
+ Y = py_1[2*i]; \
+ out_1+= out_1 + g[Y+d128[0+o]]; \
+ Y = py_1[2*i+1]; \
+ out_1+= out_1 + g[Y+d128[1+o]];
+
+#define DST2bpp1(i,o) \
+ Y = py_2[2*i]; \
+ out_2+= out_2 + g[Y+d128[8+o]]; \
+ Y = py_2[2*i+1]; \
+ out_2+= out_2 + g[Y+d128[9+o]];
+
+ DST1bpp1(0,0);
+ DST2bpp1(0,0);
+
+ DST2bpp1(1,2);
+ DST1bpp1(1,2);
+
+ DST1bpp1(2,4);
+ DST2bpp1(2,4);
+
+ DST2bpp1(3,6);
+ DST1bpp1(3,6);
+
+ dst_1[0]= out_1;
+ dst_2[0]= out_2;
+EPILOG(1)
+
+SwsFunc yuv2rgb_get_func_ptr (SwsContext *c)
+{
+#if HAVE_MMX2 || HAVE_MMX
+ if (c->flags & SWS_CPU_CAPS_MMX2){
+ switch(c->dstFormat){
+ case PIX_FMT_RGB32: return yuv420_rgb32_MMX2;
+ case PIX_FMT_BGR24: return yuv420_rgb24_MMX2;
+ case PIX_FMT_RGB565: return yuv420_rgb16_MMX2;
+ case PIX_FMT_RGB555: return yuv420_rgb15_MMX2;
+ }
+ }
+ if (c->flags & SWS_CPU_CAPS_MMX){
+ switch(c->dstFormat){
+ case PIX_FMT_RGB32: return yuv420_rgb32_MMX;
+ case PIX_FMT_BGR24: return yuv420_rgb24_MMX;
+ case PIX_FMT_RGB565: return yuv420_rgb16_MMX;
+ case PIX_FMT_RGB555: return yuv420_rgb15_MMX;
+ }
+ }
+#endif
+#if HAVE_VIS
+ {
+ SwsFunc t= yuv2rgb_init_vis(c);
+ if (t) return t;
+ }
+#endif
+#if CONFIG_MLIB
+ {
+ SwsFunc t= yuv2rgb_init_mlib(c);
+ if (t) return t;
+ }
+#endif
+#if HAVE_ALTIVEC
+ if (c->flags & SWS_CPU_CAPS_ALTIVEC)
+ {
+ SwsFunc t = yuv2rgb_init_altivec(c);
+ if (t) return t;
+ }
+#endif
+
+#if ARCH_BFIN
+ if (c->flags & SWS_CPU_CAPS_BFIN)
+ {
+ SwsFunc t = ff_bfin_yuv2rgb_get_func_ptr (c);
+ if (t) return t;
+ }
+#endif
+
+ av_log(c, AV_LOG_WARNING, "No accelerated colorspace conversion found.\n");
+
+ switch(c->dstFormat){
+ case PIX_FMT_BGR32_1:
+ case PIX_FMT_RGB32_1:
+ case PIX_FMT_BGR32:
+ case PIX_FMT_RGB32: return yuv2rgb_c_32;
+ case PIX_FMT_RGB24: return yuv2rgb_c_24_rgb;
+ case PIX_FMT_BGR24: return yuv2rgb_c_24_bgr;
+ case PIX_FMT_RGB565:
+ case PIX_FMT_BGR565:
+ case PIX_FMT_RGB555:
+ case PIX_FMT_BGR555: return yuv2rgb_c_16;
+ case PIX_FMT_RGB8:
+ case PIX_FMT_BGR8: return yuv2rgb_c_8_ordered_dither;
+ case PIX_FMT_RGB4:
+ case PIX_FMT_BGR4: return yuv2rgb_c_4_ordered_dither;
+ case PIX_FMT_RGB4_BYTE:
+ case PIX_FMT_BGR4_BYTE: return yuv2rgb_c_4b_ordered_dither;
+ case PIX_FMT_MONOBLACK: return yuv2rgb_c_1_ordered_dither;
+ default:
+ assert(0);
+ }
+ return NULL;
+}
+
+static void fill_table(uint8_t* table[256], int elemsize, int inc, uint8_t *y_table)
+{
+ int i;
+ int64_t cb = 0;
+
+ y_table -= elemsize * (inc >> 9);
+
+ for(i = 0; i < 256; i++){
+ table[i] = y_table + elemsize * ((cb + 0x8000) >> 16);
+ cb += inc;
+ }
+}
+
+static void fill_gv_table(int table[256], int elemsize, int inc, int off)
+{
+ int i;
+ int64_t cb = 0;
+
+ off -= inc >> 9;
+
+ for(i = 0; i < 256; i++){
+ table[i] = elemsize * (off + ((cb + 0x8000) >> 16));
+ cb += inc;
+ }
+}
+
+int yuv2rgb_c_init_tables (SwsContext *c, const int inv_table[4], int fullRange, int brightness, int contrast, int saturation)
+{
+ const int isRgb = c->dstFormat==PIX_FMT_RGB32
+ || c->dstFormat==PIX_FMT_RGB32_1
+ || c->dstFormat==PIX_FMT_BGR24
+ || c->dstFormat==PIX_FMT_RGB565
+ || c->dstFormat==PIX_FMT_RGB555
+ || c->dstFormat==PIX_FMT_RGB8
+ || c->dstFormat==PIX_FMT_RGB4
+ || c->dstFormat==PIX_FMT_RGB4_BYTE
+ || c->dstFormat==PIX_FMT_MONOBLACK;
+ const int bpp = fmt_depth(c->dstFormat);
+ uint8_t *y_table;
+ uint16_t *y_table16;
+ uint32_t *y_table32;
+ int i, base, rbase, gbase, bbase;
+
+ int64_t crv = inv_table[0];
+ int64_t cbu = inv_table[1];
+ int64_t cgu = -inv_table[2];
+ int64_t cgv = -inv_table[3];
+ int64_t cy = 1<<16;
+ int64_t oy = 0;
+
+ int64_t yb = 0;
+
+ if (!fullRange){
+ cy= (cy*255) / 219;
+ oy= 16<<16;
+ }else{
+ crv= (crv*224) / 255;
+ cbu= (cbu*224) / 255;
+ cgu= (cgu*224) / 255;
+ cgv= (cgv*224) / 255;
+ }
+
+ cy = (cy *contrast )>>16;
+ crv= (crv*contrast * saturation)>>32;
+ cbu= (cbu*contrast * saturation)>>32;
+ cgu= (cgu*contrast * saturation)>>32;
+ cgv= (cgv*contrast * saturation)>>32;
+ oy -= 256*brightness;
+
+ //scale coefficients by cy
+ crv = (crv << 16) / cy;
+ cbu = (cbu << 16) / cy;
+ cgu = (cgu << 16) / cy;
+ cgv = (cgv << 16) / cy;
+
+ av_free(c->yuvTable);
+
+ switch(bpp){
+ case 1:
+ c->yuvTable = av_malloc(512);
+ y_table = c->yuvTable;
+ yb = -(384<<16) - oy;
+ for(i = 0; i < 512; i++){
+ y_table[i] = av_clip_uint8((yb + 0x8000) >> 16) >> 7;
+ yb += cy;
+ }
+ fill_table(c->table_gU, 1, cgu, y_table + 256 - (oy >> 16));
+ fill_gv_table(c->table_gV, 1, cgv, 0);
+ break;
+ case 4:
+ case 4|128:
+ rbase = isRgb ? 3 : 0;
+ gbase = 1;
+ bbase = isRgb ? 0 : 3;
+ c->yuvTable = av_malloc(1024*3);
+ y_table = c->yuvTable;
+ yb = -(384<<16) - oy;
+ for(i = 0; i < 1024; i++){
+ int yval = av_clip_uint8((yb + 0x8000) >> 16);
+ y_table[i ] = (yval >> 7) << rbase;
+ y_table[i+1024] = ((yval + 43) / 85) << gbase;
+ y_table[i+2048] = (yval >> 7) << bbase;
+ yb += cy;
+ }
+ fill_table(c->table_rV, 1, crv, y_table + 232 - (oy >> 16));
+ fill_table(c->table_gU, 1, cgu, y_table + 232 + 1024 - (oy >> 16));
+ fill_table(c->table_bU, 1, cbu, y_table + 232 + 2048 - (oy >> 16));
+ fill_gv_table(c->table_gV, 1, cgv, 0);
+ break;
+ case 8:
+ rbase = isRgb ? 5 : 0;
+ gbase = isRgb ? 2 : 3;
+ bbase = isRgb ? 0 : 6;
+ c->yuvTable = av_malloc(1024*3);
+ y_table = c->yuvTable;
+ yb = -(384<<16) - oy;
+ for(i = 0; i < 1024; i++){
+ int yval = av_clip_uint8((yb + 0x8000) >> 16);
+ y_table[i ] = ((yval + 18) / 36) << rbase;
+ y_table[i+1024] = ((yval + 18) / 36) << gbase;
+ y_table[i+2048] = ((yval + 43) / 85) << bbase;
+ yb += cy;
+ }
+ fill_table(c->table_rV, 1, crv, y_table + 327 - (oy >> 16));
+ fill_table(c->table_gU, 1, cgu, y_table + 327 + 1024 - (oy >> 16));
+ fill_table(c->table_bU, 1, cbu, y_table + 327 + 2048 - (oy >> 16));
+ fill_gv_table(c->table_gV, 1, cgv, 0);
+ break;
+ case 15:
+ case 16:
+ rbase = isRgb ? bpp - 5 : 0;
+ gbase = 5;
+ bbase = isRgb ? 0 : (bpp - 5);
+ 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 >> 3) << rbase;
+ y_table16[i+1024] = (yval >> (18 - bpp)) << gbase;
+ y_table16[i+2048] = (yval >> 3) << bbase;
+ yb += cy;
+ }
+ fill_table(c->table_rV, 2, crv, y_table16 + 342 - (oy >> 16));
+ fill_table(c->table_gU, 2, cgu, y_table16 + 342 + 1024 - (oy >> 16));
+ fill_table(c->table_bU, 2, cbu, y_table16 + 342 + 2048 - (oy >> 16));
+ fill_gv_table(c->table_gV, 2, cgv, 0);
+ break;
+ case 24:
+ c->yuvTable = av_malloc(1024);
+ y_table = c->yuvTable;
+ yb = -(384<<16) - oy;
+ for(i = 0; i < 1024; i++){
+ y_table[i] = av_clip_uint8((yb + 0x8000) >> 16);
+ yb += cy;
+ }
+ fill_table(c->table_rV, 1, crv, y_table + 384 - (oy >> 16));
+ fill_table(c->table_gU, 1, cgu, y_table + 384 - (oy >> 16));
+ fill_table(c->table_bU, 1, cbu, y_table + 384 - (oy >> 16));
+ fill_gv_table(c->table_gV, 1, cgv, 16);
+ break;
+ case 32:
+ base = (c->dstFormat == PIX_FMT_RGB32_1 || c->dstFormat == PIX_FMT_BGR32_1) ? 8 : 0;
+ rbase = base + (isRgb ? 16 : 0);
+ gbase = base + 8;
+ bbase = base + (isRgb ? 0 : 16);
+ c->yuvTable = av_malloc(1024*3*4);
+ y_table32 = c->yuvTable;
+ yb = -(384<<16) - oy;
+ for(i = 0; i < 1024; i++){
+ uint8_t yval = av_clip_uint8((yb + 0x8000) >> 16);
+ y_table32[i ] = yval << rbase;
+ y_table32[i+1024] = yval << gbase;
+ y_table32[i+2048] = yval << bbase;
+ yb += cy;
+ }
+ fill_table(c->table_rV, 4, crv, y_table32 + 384 - (oy >> 16));
+ fill_table(c->table_gU, 4, cgu, y_table32 + 384 + 1024 - (oy >> 16));
+ fill_table(c->table_bU, 4, cbu, y_table32 + 384 + 2048 - (oy >> 16));
+ fill_gv_table(c->table_gV, 4, cgv, 0);
+ break;
+ default:
+ c->yuvTable = NULL;
+ av_log(c, AV_LOG_ERROR, "%ibpp not supported by yuv2rgb\n", bpp);
+ return -1;
+ }
+ return 0;
+}
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