79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
#include "evas_common.h"
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#include "evas_convert_gry_8.h"
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#ifdef USE_DITHER_44
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extern const DATA8 _evas_dither_44[4][4];
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#endif
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#ifdef USE_DITHER_128128
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extern const DATA8 _evas_dither_128128[128][128];
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#endif
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#ifdef BUILD_CONVERT_8_GRY_1
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void evas_common_convert_rgba_to_8bpp_gry_256_dith (DATA32 *src, DATA8 *dst, int src_jump, int dst_jump, int w, int h, int dith_x __UNUSED__, int dith_y __UNUSED__, DATA8 *pal __UNUSED__)
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{
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DATA32 *src_ptr;
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DATA8 *dst_ptr;
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int x, y;
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DATA8 r, g, b;
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DATA32 gry8;
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dst_ptr = (DATA8 *)dst;
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CONVERT_LOOP_START_ROT_0();
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r = (R_VAL(src_ptr));
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g = (G_VAL(src_ptr));
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b = (B_VAL(src_ptr));
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// Y = 0.299 * R + 0.587 * G + 0.114 * B;
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gry8 = ((r * 19595) + (g * 38469) + (b * 7471)) >> 16;
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*dst_ptr = gry8;
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CONVERT_LOOP_END_ROT_0();
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}
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#endif
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#ifdef BUILD_CONVERT_8_GRY_4
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void evas_common_convert_rgba_to_8bpp_gry_64_dith (DATA32 *src __UNUSED__, DATA8 *dst __UNUSED__, int src_jump __UNUSED__, int dst_jump __UNUSED__, int w __UNUSED__, int h __UNUSED__, int dith_x __UNUSED__, int dith_y __UNUSED__, DATA8 *pal __UNUSED__){}
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#endif
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#ifdef BUILD_CONVERT_8_GRY_16
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void evas_common_convert_rgba_to_8bpp_gry_16_dith (DATA32 *src, DATA8 *dst, int src_jump, int dst_jump, int w, int h, int dith_x, int dith_y, DATA8 *pal __UNUSED__)
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{
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DATA32 *src_ptr;
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DATA8 *dst_ptr;
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int x, y;
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DATA8 r, g, b;
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DATA32 gry8;
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DATA8 dith;
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dst_ptr = (DATA8 *)dst;
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CONVERT_LOOP_START_ROT_0();
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dith = DM_TABLE[(x + dith_x) & DM_MSK][(y + dith_y) & DM_MSK] >> DM_SHF(4);
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r = (R_VAL(src_ptr));
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g = (G_VAL(src_ptr));
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b = (B_VAL(src_ptr));
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// Y = 0.299 * R + 0.587 * G + 0.114 * B;
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gry8 = ((r * 19595) + (g * 38469) + (b * 7471)) >> 16;
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if (((gry8 - gry8 * 255 / 4) >= dith) && (gry8 < 0x07)) gry8++;
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*dst_ptr = gry8;
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CONVERT_LOOP_END_ROT_0();
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}
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#endif
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#ifdef BUILD_CONVERT_8_GRY_64
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void evas_common_convert_rgba_to_8bpp_gry_4_dith (DATA32 *src __UNUSED__, DATA8 *dst __UNUSED__, int src_jump __UNUSED__, int dst_jump __UNUSED__, int w __UNUSED__, int h __UNUSED__, int dith_x __UNUSED__, int dith_y __UNUSED__, DATA8 *pal __UNUSED__){}
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#endif
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#ifdef BUILD_CONVERT_8_GRY_256
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void evas_common_convert_rgba_to_8bpp_gry_1_dith (DATA32 *src __UNUSED__, DATA8 *dst __UNUSED__, int src_jump __UNUSED__, int dst_jump __UNUSED__, int w __UNUSED__, int h __UNUSED__, int dith_x __UNUSED__, int dith_y __UNUSED__, DATA8 *pal __UNUSED__){}
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#endif
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