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retroSoC/rtl/ip/multimedia/jpeg_header_writer.sv
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maksyuki 39bc1c84b4 feat: add tests for JPEG reference model and register synchronization 
- Implemented tests for the deterministic baseline JPEG reference model in , covering encoding, decoding, quality scaling, and error handling.
- Created  to ensure synchronization between RTL and C register constants for JPEG.
- Updated  to reflect changes in the number of APB interfaces and IRQ mappings, ensuring the topology generates correct bindings.
2026-08-31 19:23:19 +08:00

378 lines
13 KiB
Systemverilog
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// Copyright (c) 2026 Yuchi Miao <miaoyuchi@ict.ac.cn>
// retroSoC is licensed under Mulan PSL v2.
// THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND.
module jpeg_header_writer (
// verilog_format: off -- preserve command, quantization table, and byte columns
input logic clk_i,
input logic rst_n_i,
input logic start_i,
input logic [15:0] width_i,
input logic [15:0] height_i,
input logic [ 1:0] sampling_i,
input logic [15:0] restart_interval_i,
input logic [511:0] luma_quant_i,
input logic [511:0] chroma_quant_i,
output logic start_ready_o,
output logic [ 7:0] byte_o,
output logic byte_valid_o,
input logic byte_ready_i,
output logic done_o,
output logic error_o
// verilog_format: on
);
localparam int unsigned GrayDhtBytes = 212;
localparam int unsigned ColorDhtBytes = 420;
localparam logic [GrayDhtBytes*8-1:0] GrayDht = {
256'hfaf9f8f7f6f5f4f3f2f1eae9e8e7e6e5e4e3e2e1dad9d8d7d6d5d4d3d2cac9c8,
256'hc7c6c5c4c3c2bab9b8b7b6b5b4b3b2aaa9a8a7a6a5a4a3a29a99989796959493,
256'h928a898887868584837a797877767574736a696867666564635a595857565554,
256'h534a494847464544433a3938373635342a29282726251a191817160a09827262,
256'h3324f0d15215c1b1422308a19181321471220761511306413121120511040003,
256'h02017d010000040405050304020303010200100b0a0908070605040302010000,
160'h00000000000001010101010105010000d200c4ff
};
localparam logic [ColorDhtBytes*8-1:0] ColorDht = {
256'hfaf9f8f7f6f5f4f3f2eae9e8e7e6e5e4e3e2dad9d8d7d6d5d4d3d2cac9c8c7c6,
256'hc5c4c3c2bab9b8b7b6b5b4b3b2aaa9a8a7a6a5a4a3a29a99989796959493928a,
256'h89888786858483827a797877767574736a696867666564635a59585756555453,
256'h4a494847464544433a39383736352a292827261a191817f125e13424160ad172,
256'h6215f052332309c1b1a191421408813222137161075141120631210504110302,
256'h010077020100040405070403040402010200110b0a0908070605040302010000,
256'h00000000010101010101010101030001faf9f8f7f6f5f4f3f2f1eae9e8e7e6e5,
256'he4e3e2e1dad9d8d7d6d5d4d3d2cac9c8c7c6c5c4c3c2bab9b8b7b6b5b4b3b2aa,
256'ha9a8a7a6a5a4a3a29a99989796959493928a898887868584837a797877767574,
256'h736a696867666564635a595857565554534a494847464544433a393837363534,
256'h2a29282726251a191817160a098272623324f0d15215c1b1422308a191813214,
256'h7122076151130641312112051104000302017d01000004040505030402030301,
256'h0200100b0a090807060504030201000000000000000001010101010105010000,
32'ha201c4ff
};
logic s_active_d;
logic s_active_q;
logic [ 9:0] s_position_d;
logic [ 9:0] s_position_q;
logic [ 15:0] s_width_d;
logic [ 15:0] s_width_q;
logic [ 15:0] s_height_d;
logic [ 15:0] s_height_q;
logic [ 1:0] s_sampling_d;
logic [ 1:0] s_sampling_q;
logic [ 15:0] s_restart_d;
logic [ 15:0] s_restart_q;
logic [511:0] s_luma_quant_d;
logic [511:0] s_luma_quant_q;
logic [511:0] s_chroma_quant_d;
logic [511:0] s_chroma_quant_q;
logic s_done_d;
logic s_done_q;
logic s_err_d;
logic s_err_q;
logic s_gray;
logic [ 9:0] s_dqt_start;
logic [ 9:0] s_dqt_bytes;
logic [ 9:0] s_sof_start;
logic [ 9:0] s_sof_bytes;
logic [ 9:0] s_dht_start;
logic [ 9:0] s_dht_bytes;
logic [ 9:0] s_dri_start;
logic [ 9:0] s_dri_bytes;
logic [ 9:0] s_sos_start;
logic [ 9:0] s_sos_bytes;
logic [ 9:0] s_total_bytes;
logic [ 9:0] s_relative;
function automatic logic [5:0] zigzag_index(input logic [5:0] index_i);
begin
unique case (index_i)
6'd0: zigzag_index = 6'd0;
6'd1: zigzag_index = 6'd1;
6'd2: zigzag_index = 6'd8;
6'd3: zigzag_index = 6'd16;
6'd4: zigzag_index = 6'd9;
6'd5: zigzag_index = 6'd2;
6'd6: zigzag_index = 6'd3;
6'd7: zigzag_index = 6'd10;
6'd8: zigzag_index = 6'd17;
6'd9: zigzag_index = 6'd24;
6'd10: zigzag_index = 6'd32;
6'd11: zigzag_index = 6'd25;
6'd12: zigzag_index = 6'd18;
6'd13: zigzag_index = 6'd11;
6'd14: zigzag_index = 6'd4;
6'd15: zigzag_index = 6'd5;
6'd16: zigzag_index = 6'd12;
6'd17: zigzag_index = 6'd19;
6'd18: zigzag_index = 6'd26;
6'd19: zigzag_index = 6'd33;
6'd20: zigzag_index = 6'd40;
6'd21: zigzag_index = 6'd48;
6'd22: zigzag_index = 6'd41;
6'd23: zigzag_index = 6'd34;
6'd24: zigzag_index = 6'd27;
6'd25: zigzag_index = 6'd20;
6'd26: zigzag_index = 6'd13;
6'd27: zigzag_index = 6'd6;
6'd28: zigzag_index = 6'd7;
6'd29: zigzag_index = 6'd14;
6'd30: zigzag_index = 6'd21;
6'd31: zigzag_index = 6'd28;
6'd32: zigzag_index = 6'd35;
6'd33: zigzag_index = 6'd42;
6'd34: zigzag_index = 6'd49;
6'd35: zigzag_index = 6'd56;
6'd36: zigzag_index = 6'd57;
6'd37: zigzag_index = 6'd50;
6'd38: zigzag_index = 6'd43;
6'd39: zigzag_index = 6'd36;
6'd40: zigzag_index = 6'd29;
6'd41: zigzag_index = 6'd22;
6'd42: zigzag_index = 6'd15;
6'd43: zigzag_index = 6'd23;
6'd44: zigzag_index = 6'd30;
6'd45: zigzag_index = 6'd37;
6'd46: zigzag_index = 6'd44;
6'd47: zigzag_index = 6'd51;
6'd48: zigzag_index = 6'd58;
6'd49: zigzag_index = 6'd59;
6'd50: zigzag_index = 6'd52;
6'd51: zigzag_index = 6'd45;
6'd52: zigzag_index = 6'd38;
6'd53: zigzag_index = 6'd31;
6'd54: zigzag_index = 6'd39;
6'd55: zigzag_index = 6'd46;
6'd56: zigzag_index = 6'd53;
6'd57: zigzag_index = 6'd60;
6'd58: zigzag_index = 6'd61;
6'd59: zigzag_index = 6'd54;
6'd60: zigzag_index = 6'd47;
6'd61: zigzag_index = 6'd55;
6'd62: zigzag_index = 6'd62;
default: zigzag_index = 6'd63;
endcase
end
endfunction
assign s_gray = s_sampling_q == 2'd0;
assign s_dqt_start = 10'd20;
assign s_dqt_bytes = s_gray ? 10'd69 : 10'd134;
assign s_sof_start = s_dqt_start + s_dqt_bytes;
assign s_sof_bytes = s_gray ? 10'd13 : 10'd19;
assign s_dht_start = s_sof_start + s_sof_bytes;
assign s_dht_bytes = s_gray ? 10'(GrayDhtBytes) : 10'(ColorDhtBytes);
assign s_dri_start = s_dht_start + s_dht_bytes;
assign s_dri_bytes = (s_restart_q == 16'd0) ? 10'd0 : 10'd6;
assign s_sos_start = s_dri_start + s_dri_bytes;
assign s_sos_bytes = s_gray ? 10'd10 : 10'd14;
assign s_total_bytes = s_sos_start + s_sos_bytes;
assign start_ready_o = !s_active_q;
assign byte_valid_o = s_active_q;
assign done_o = s_done_q;
assign error_o = s_err_q;
always_comb begin
byte_o = 8'd0;
s_relative = 10'd0;
if (s_position_q == 10'd0) begin
byte_o = 8'hff;
end else if (s_position_q == 10'd1) begin
byte_o = 8'hd8;
end else if (s_position_q < 10'd20) begin
s_relative = s_position_q - 10'd2;
unique case (s_relative)
10'd0: byte_o = 8'hff;
10'd1: byte_o = 8'he0;
10'd2: byte_o = 8'h00;
10'd3: byte_o = 8'h10;
10'd4: byte_o = 8'h4a;
10'd5: byte_o = 8'h46;
10'd6: byte_o = 8'h49;
10'd7: byte_o = 8'h46;
10'd8: byte_o = 8'h00;
10'd9: byte_o = 8'h01;
10'd10: byte_o = 8'h02;
10'd11: byte_o = 8'h00;
10'd13, 10'd15: byte_o = 8'h01;
default: byte_o = 8'h00;
endcase
end else if (s_position_q < s_sof_start) begin
s_relative = s_position_q - s_dqt_start;
if (s_relative == 10'd0) byte_o = 8'hff;
else if (s_relative == 10'd1) byte_o = 8'hdb;
else if (s_relative == 10'd2) byte_o = 8'h00;
else if (s_relative == 10'd3) byte_o = s_gray ? 8'h43 : 8'h84;
else if (s_relative == 10'd4) byte_o = 8'h00;
else if (s_relative < 10'd69) begin
byte_o = s_luma_quant_q[zigzag_index(6'(s_relative-5))*8+:8];
end else if (s_relative == 10'd69) begin
byte_o = 8'h01;
end else begin
byte_o = s_chroma_quant_q[zigzag_index(6'(s_relative-70))*8+:8];
end
end else if (s_position_q < s_dht_start) begin
s_relative = s_position_q - s_sof_start;
if (s_relative == 10'd0) byte_o = 8'hff;
else if (s_relative == 10'd1) byte_o = 8'hc0;
else if (s_relative == 10'd2) byte_o = 8'h00;
else if (s_relative == 10'd3) byte_o = s_gray ? 8'h0b : 8'h11;
else if (s_relative == 10'd4) byte_o = 8'h08;
else if (s_relative == 10'd5) byte_o = s_height_q[15:8];
else if (s_relative == 10'd6) byte_o = s_height_q[7:0];
else if (s_relative == 10'd7) byte_o = s_width_q[15:8];
else if (s_relative == 10'd8) byte_o = s_width_q[7:0];
else if (s_relative == 10'd9) byte_o = s_gray ? 8'd1 : 8'd3;
else if (s_relative == 10'd10) byte_o = 8'd1;
else if (s_relative == 10'd11) begin
unique case (s_sampling_q)
2'd0, 2'd1: byte_o = 8'h11;
2'd2: byte_o = 8'h21;
default: byte_o = 8'h22;
endcase
end else if (s_relative == 10'd12) byte_o = 8'd0;
else if (s_relative == 10'd13) byte_o = 8'd2;
else if (s_relative == 10'd14) byte_o = 8'h11;
else if (s_relative == 10'd15) byte_o = 8'd1;
else if (s_relative == 10'd16) byte_o = 8'd3;
else if (s_relative == 10'd17) byte_o = 8'h11;
else byte_o = 8'd1;
end else if (s_position_q < s_dri_start) begin
s_relative = s_position_q - s_dht_start;
byte_o = s_gray ? GrayDht[s_relative*8+:8] : ColorDht[s_relative*8+:8];
end else if (s_position_q < s_sos_start) begin
s_relative = s_position_q - s_dri_start;
unique case (s_relative)
10'd0: byte_o = 8'hff;
10'd1: byte_o = 8'hdd;
10'd2: byte_o = 8'h00;
10'd3: byte_o = 8'h04;
10'd4: byte_o = s_restart_q[15:8];
default: byte_o = s_restart_q[7:0];
endcase
end else begin
s_relative = s_position_q - s_sos_start;
if (s_relative == 10'd0) byte_o = 8'hff;
else if (s_relative == 10'd1) byte_o = 8'hda;
else if (s_relative == 10'd2) byte_o = 8'h00;
else if (s_relative == 10'd3) byte_o = s_gray ? 8'h08 : 8'h0c;
else if (s_relative == 10'd4) byte_o = s_gray ? 8'd1 : 8'd3;
else if (s_relative == 10'd5) byte_o = 8'd1;
else if (s_relative == 10'd6) byte_o = 8'h00;
else if (!s_gray && s_relative == 10'd7) byte_o = 8'd2;
else if (!s_gray && s_relative == 10'd8) byte_o = 8'h11;
else if (!s_gray && s_relative == 10'd9) byte_o = 8'd3;
else if (!s_gray && s_relative == 10'd10) byte_o = 8'h11;
else if (s_relative == s_sos_bytes - 3) byte_o = 8'd0;
else if (s_relative == s_sos_bytes - 2) byte_o = 8'd63;
else byte_o = 8'd0;
end
end
always_comb begin
s_active_d = s_active_q;
s_position_d = s_position_q;
s_width_d = s_width_q;
s_height_d = s_height_q;
s_sampling_d = s_sampling_q;
s_restart_d = s_restart_q;
s_luma_quant_d = s_luma_quant_q;
s_chroma_quant_d = s_chroma_quant_q;
s_done_d = 1'b0;
s_err_d = s_err_q;
if (start_i && start_ready_o) begin
s_width_d = width_i;
s_height_d = height_i;
s_sampling_d = sampling_i;
s_restart_d = restart_interval_i;
s_luma_quant_d = luma_quant_i;
s_chroma_quant_d = chroma_quant_i;
s_position_d = 10'd0;
s_err_d = (width_i == 16'd0) || (height_i == 16'd0);
s_active_d = 1'b1;
end
if (byte_valid_o && byte_ready_i) begin
if (s_position_q + 1'b1 == s_total_bytes) begin
s_active_d = 1'b0;
s_done_d = 1'b1;
end else begin
s_position_d = s_position_q + 1'b1;
end
end
end
dffr u_active_dffr (
.clk_i (clk_i),
.rst_n_i(rst_n_i),
.dat_i (s_active_d),
.dat_o (s_active_q)
);
dffr #(
.DATA_WIDTH(10)
) u_position_dffr (
.clk_i (clk_i),
.rst_n_i(rst_n_i),
.dat_i (s_position_d),
.dat_o (s_position_q)
);
dffr #(
.DATA_WIDTH(16)
) u_width_dffr (
.clk_i (clk_i),
.rst_n_i(rst_n_i),
.dat_i (s_width_d),
.dat_o (s_width_q)
);
dffr #(
.DATA_WIDTH(16)
) u_height_dffr (
.clk_i (clk_i),
.rst_n_i(rst_n_i),
.dat_i (s_height_d),
.dat_o (s_height_q)
);
dffr #(
.DATA_WIDTH(2)
) u_sampling_dffr (
.clk_i (clk_i),
.rst_n_i(rst_n_i),
.dat_i (s_sampling_d),
.dat_o (s_sampling_q)
);
dffr #(
.DATA_WIDTH(16)
) u_restart_dffr (
.clk_i (clk_i),
.rst_n_i(rst_n_i),
.dat_i (s_restart_d),
.dat_o (s_restart_q)
);
dffr #(
.DATA_WIDTH(512)
) u_luma_quant_dffr (
.clk_i (clk_i),
.rst_n_i(rst_n_i),
.dat_i (s_luma_quant_d),
.dat_o (s_luma_quant_q)
);
dffr #(
.DATA_WIDTH(512)
) u_chroma_quant_dffr (
.clk_i (clk_i),
.rst_n_i(rst_n_i),
.dat_i (s_chroma_quant_d),
.dat_o (s_chroma_quant_q)
);
dffr u_done_dffr (
.clk_i (clk_i),
.rst_n_i(rst_n_i),
.dat_i (s_done_d),
.dat_o (s_done_q)
);
dffr u_err_dffr (
.clk_i (clk_i),
.rst_n_i(rst_n_i),
.dat_i (s_err_d),
.dat_o (s_err_q)
);
endmodule
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