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Update sys.

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Sorgelig
2024-04-21 23:13:01 +08:00
parent 16b743e4bc
commit 5214a07dcf
14 changed files with 1848 additions and 490 deletions
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33
sys/video_freak.sv
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@ -170,10 +170,8 @@ reg [11:0] mul_arg1, mul_arg2;
wire [23:0] mul_res;
sys_umul #(12,12) mul(CLK_VIDEO,mul_start,mul_run, mul_arg1,mul_arg2,mul_res);
wire [11:0] wideres = mul_res[11:0] + hsize;
always @(posedge CLK_VIDEO) begin
reg [11:0] oheight,htarget,wres;
reg [11:0] oheight,htarget,wres,hinteger,wideres;
reg [12:0] arxf,aryf;
reg [3:0] cnt;
reg narrow;
@ -264,7 +262,8 @@ always @(posedge CLK_VIDEO) begin
// [3] 1080 / 512 * 512 * 4 / 3 / 512 * 512 -> 1024
7: if(mul_res <= HDMI_WIDTH) begin
cnt <= 10;
hinteger = mul_res[11:0];
cnt <= 12;
end
8: begin
@ -285,9 +284,21 @@ always @(posedge CLK_VIDEO) begin
// [2] 1920 / 640 * 640 -> 1920
// [3] 1920 / 512 * 512 -> 1536
10: begin
narrow <= ((htarget - mul_res[11:0]) <= (wideres - htarget)) || (wideres > HDMI_WIDTH);
wres <= mul_res[11:0] == htarget ? mul_res[11:0] : wideres;
10: begin
hinteger <= mul_res[11:0];
mul_arg1 <= vsize;
mul_arg2 <= div_res[11:0] ? div_res[11:0] : 12'd1;
mul_start <= 1;
end
11: begin
oheight <= mul_res[11:0];
end
12: begin
wideres <= hinteger + hsize;
narrow <= ((htarget - hinteger) <= (wideres - htarget)) || (wideres > HDMI_WIDTH);
wres <= hinteger == htarget ? hinteger : wideres;
end
// [1] 1066 - 720 = 346 <= 1440 - 1066 = 374 || 1440 > 1920 -> true
// [2] 1280 - 1280 = 0 <= 1920 - 1280 = 640 || 1920 > 1920 -> true
@ -299,11 +310,11 @@ always @(posedge CLK_VIDEO) begin
// to target width, meaning it is not optimal for source aspect ratio.
// otherwise it is set to narrow width that is optimal.
11: begin
13: begin
case(SCALE)
2: arxf <= {1'b1, mul_res[11:0]};
3: arxf <= {1'b1, (wres > HDMI_WIDTH) ? mul_res[11:0] : wres};
4: arxf <= {1'b1, narrow ? mul_res[11:0] : wres};
2: arxf <= {1'b1, hinteger};
3: arxf <= {1'b1, (wres > HDMI_WIDTH) ? hinteger : wres};
4: arxf <= {1'b1, narrow ? hinteger : wres};
default: arxf <= {1'b1, div_num[11:0]};
endcase
aryf <= {1'b1, oheight};