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https://opencores.org/ocsvn/mkjpeg/mkjpeg/trunk
[/] [mkjpeg/] [trunk/] [design/] [mdct/] [FDCT.vhd] - Diff between revs 61 and 63
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| Rev 61 |
Rev 63 |
| Line 566... |
Line 566... |
Cr_Reg_3 <= (others => '0');
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Cr_Reg_3 <= (others => '0');
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Y_Reg <= (others => '0');
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Y_Reg <= (others => '0');
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Cb_Reg <= (others => '0');
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Cb_Reg <= (others => '0');
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Cr_Reg <= (others => '0');
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Cr_Reg <= (others => '0');
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elsif CLK'event and CLK = '1' then
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elsif CLK'event and CLK = '1' then
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-- RGB input
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if C_YUV_INPUT = '0' then
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Y_Reg_1 <= R_s*C_Y_1;
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Y_Reg_1 <= R_s*C_Y_1;
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Y_Reg_2 <= G_s*C_Y_2;
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Y_Reg_2 <= G_s*C_Y_2;
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Y_Reg_3 <= B_s*C_Y_3;
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Y_Reg_3 <= B_s*C_Y_3;
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Cb_Reg_1 <= R_s*C_Cb_1;
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Cb_Reg_1 <= R_s*C_Cb_1;
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| Line 581... |
Line 583... |
Cr_Reg_3 <= B_s*C_Cr_3;
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Cr_Reg_3 <= B_s*C_Cr_3;
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Y_Reg <= Y_Reg_1 + Y_Reg_2 + Y_Reg_3;
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Y_Reg <= Y_Reg_1 + Y_Reg_2 + Y_Reg_3;
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Cb_Reg <= Cb_Reg_1 + Cb_Reg_2 + Cb_Reg_3 + to_signed(128*16384,Cb_Reg'length);
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Cb_Reg <= Cb_Reg_1 + Cb_Reg_2 + Cb_Reg_3 + to_signed(128*16384,Cb_Reg'length);
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Cr_Reg <= Cr_Reg_1 + Cr_Reg_2 + Cr_Reg_3 + to_signed(128*16384,Cr_Reg'length);
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Cr_Reg <= Cr_Reg_1 + Cr_Reg_2 + Cr_Reg_3 + to_signed(128*16384,Cr_Reg'length);
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-- YCbCr input
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-- R-G-B misused as Y-Cb-Cr
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else
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Y_Reg_1 <= '0' & R_s & "00000000000000";
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Cb_Reg_1 <= '0' & G_s & "00000000000000";
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Cr_Reg_1 <= '0' & B_s & "00000000000000";
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Y_Reg <= Y_Reg_1;
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Cb_Reg <= Cb_Reg_1;
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Cr_Reg <= Cr_Reg_1;
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end if;
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end if;
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end if;
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end process;
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end process;
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Y_8bit <= unsigned(Y_Reg(21 downto 14));
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Y_8bit <= unsigned(Y_Reg(21 downto 14));
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Cb_8bit <= unsigned(Cb_Reg(21 downto 14));
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Cb_8bit <= unsigned(Cb_Reg(21 downto 14));
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