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[/] [cavlc/] [trunk/] [rtl/] [cavlc_read_run_befores.v] - Blame information for rev 6

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//2011-8-16 initiial revision
 
`include "defines.v"
 
module cavlc_read_run_befores(
        clk,
        rst_n,
        ena,
        sel,
        clr,
        ZeroLeft_init,
 
        rbsp,
        i,
        TotalZeros_comb,
 
        level_0,
        level_1,
        level_2,
        level_3,
        level_4,
        level_5,
        level_6,
        level_7,
        level_8,
        level_9,
        level_10,
        level_11,
        level_12,
        level_13,
        level_14,
        level_15,
 
        coeff_0,
        coeff_1,
        coeff_2,
        coeff_3,
        coeff_4,
        coeff_5,
        coeff_6,
        coeff_7,
        coeff_8,
        coeff_9,
        coeff_10,
        coeff_11,
        coeff_12,
        coeff_13,
        coeff_14,
        coeff_15,
        ZeroLeft,
        len_comb
);
//----------------------
//ports
//----------------------
input   clk;
input   rst_n;
input   ena;
input   sel;
input   clr;
input   ZeroLeft_init;
 
input   [0:10]   rbsp;
input   [3:0]    i;                      //range from TotalCoeff-1 to 0
input   [3:0]    TotalZeros_comb;
 
input   [8:0]    level_0;
input   [8:0]    level_1;
input   [8:0]    level_2;
input   [8:0]    level_3;
input   [8:0]    level_4;
input   [8:0]    level_5;
input   [8:0]    level_6;
input   [8:0]    level_7;
input   [8:0]    level_8;
input   [8:0]    level_9;
input   [8:0]    level_10;
input   [8:0]    level_11;
input   [8:0]    level_12;
input   [8:0]    level_13;
input   [8:0]    level_14;
input   [8:0]    level_15;
 
output  [8:0]    coeff_0;
output  [8:0]    coeff_1;
output  [8:0]    coeff_2;
output  [8:0]    coeff_3;
output  [8:0]    coeff_4;
output  [8:0]    coeff_5;
output  [8:0]    coeff_6;
output  [8:0]    coeff_7;
output  [8:0]    coeff_8;
output  [8:0]    coeff_9;
output  [8:0]    coeff_10;
output  [8:0]    coeff_11;
output  [8:0]    coeff_12;
output  [8:0]    coeff_13;
output  [8:0]    coeff_14;
output  [8:0]    coeff_15;
 
output  [3:0]    ZeroLeft;
 
output  [3:0]    len_comb;
 
//----------------------
//regs
//----------------------
reg             [3:0]    run;
reg             [3:0]    len;
reg             [8:0]    coeff;
 
 
reg             [3:0]    len_comb;
 
//----------------------
//FFs
//----------------------
reg             [3:0]    ZeroLeft;
 
reg     [8:0]    coeff_0;
reg     [8:0]    coeff_1;
reg     [8:0]    coeff_2;
reg     [8:0]    coeff_3;
reg     [8:0]    coeff_4;
reg     [8:0]    coeff_5;
reg     [8:0]    coeff_6;
reg     [8:0]    coeff_7;
reg     [8:0]    coeff_8;
reg     [8:0]    coeff_9;
reg     [8:0]    coeff_10;
reg     [8:0]    coeff_11;
reg     [8:0]    coeff_12;
reg     [8:0]    coeff_13;
reg     [8:0]    coeff_14;
reg     [8:0]    coeff_15;
 
//----------------------
//run & len
//----------------------
always @(rbsp or ZeroLeft or ena or sel)
if (ena && sel)
case(ZeroLeft)
 
        1 : begin len <= 1; run <= rbsp[0]? 0:1; end
        2 : begin if (rbsp[0]) begin
                        run <= 0;
                        len <= 1;
                end
                else if (rbsp[1]) begin
                        run <= 1;
                        len <= 2;
                end
                else begin
                        run <= 2;
                        len <= 2;
                end
        end
        3 : begin
                run <= 3 - rbsp[0:1];
                len <= 2;
        end
        4 : begin
                if (rbsp[0:1] != 0) begin
                        run <= 3 - rbsp[0:1];
                        len <= 2;
                end
                else begin
                        run <= rbsp[2]? 3:4;
                        len <= 3;
                end
        end
        5 : begin
                if (rbsp[0]) begin
                        run <= rbsp[1]? 0:1;
                        len <= 2;
                end
                else if (rbsp[1]) begin
                        run <= rbsp[2]? 2:3;
                        len <= 3;
                end
                else begin
                        run <= rbsp[2]? 4:5;
                        len <= 3;
                end
        end
        6 : begin
                if (rbsp[0:1] == 2'b11) begin
                        run <= 0;
                        len <= 2;
                end
                else begin
                        len <= 3;
                        case(rbsp[0:2])
                                3'b000 : run <= 1;
                                3'b001 : run <= 2;
                                3'b011 : run <= 3;
                                3'b010 : run <= 4;
                                3'b101 : run <= 5;
                                default: run <= 6;
                        endcase
                end
        end
        default : begin
                if (rbsp[0:2] != 0) begin
                        run <= 7 - rbsp[0:2];
                        len <= 3;
                end
                else begin
                        case (1'b1)
                                rbsp[3] : begin run <= 7;       len <= 4; end
                                rbsp[4] : begin run <= 8;       len <= 5; end
                                rbsp[5] : begin run <= 9;       len <= 6; end
                                rbsp[6] : begin run <= 10;      len <= 7; end
                                rbsp[7] : begin run <= 11;      len <= 8; end
                                rbsp[8] : begin run <= 12;      len <= 9; end
                                rbsp[9] : begin run <= 13;      len <= 10;end
                                rbsp[10]: begin run <= 14;      len <= 11;end
                                default : begin run <= 'bx;     len <='bx;end
                        endcase
                end
        end
endcase
else begin
        len <= 0;
        run <= 0;
end
 
//----------------------
//len_comb
//----------------------
always @(*)
if (i >  0)
        len_comb <= len;
else
        len_comb <= 0;
 
 
//----------------------
//ZeroLeft
//----------------------
always @(posedge clk or negedge rst_n)
if (!rst_n)
        ZeroLeft <= 0;
else if (ena && clr)    //in case TotalCoeff >= max_coeff_num
        ZeroLeft <= 0;
else if (ena && ZeroLeft_init)
        ZeroLeft <= TotalZeros_comb;
else if (ena && sel )//if ZeroLeft == 0, run will be 0
        ZeroLeft <= ZeroLeft - run;
 
//----------------------
//coeff
//----------------------
always @(*)
if (ena && sel)
case (i)
 
        1 :coeff <= level_1;
        2 :coeff <= level_2;
        3 :coeff <= level_3;
        4 :coeff <= level_4;
        5 :coeff <= level_5;
        6 :coeff <= level_6;
        7 :coeff <= level_7;
        8 :coeff <= level_8;
        9 :coeff <= level_9;
        10:coeff <= level_10;
        11:coeff <= level_11;
        12:coeff <= level_12;
        13:coeff <= level_13;
        14:coeff <= level_14;
        15:coeff <= level_15;
endcase
else
        coeff <= 0;
 
//----------------------
//coeff_0 to coeff_15
//----------------------
always @(posedge clk or negedge rst_n)
if (!rst_n) begin
        coeff_0 <= 0;    coeff_1 <= 0;    coeff_2 <= 0;    coeff_3 <= 0;
        coeff_4 <= 0;    coeff_5 <= 0;    coeff_6 <= 0;    coeff_7 <= 0;
        coeff_8 <= 0;    coeff_9 <= 0;    coeff_10<= 0;    coeff_11<= 0;
        coeff_12<= 0;    coeff_13<= 0;    coeff_14<= 0;    coeff_15<= 0;
end
else if (ena && clr) begin
        coeff_0 <= 0;    coeff_1 <= 0;    coeff_2 <= 0;    coeff_3 <= 0;
        coeff_4 <= 0;    coeff_5 <= 0;    coeff_6 <= 0;    coeff_7 <= 0;
        coeff_8 <= 0;    coeff_9 <= 0;    coeff_10<= 0;    coeff_11<= 0;
        coeff_12<= 0;    coeff_13<= 0;    coeff_14<= 0;    coeff_15<= 0;
end
else if (ena && sel && ZeroLeft > 0)
case (ZeroLeft+i)
        1 :coeff_1      <= coeff;
        2 :coeff_2      <= coeff;
        3 :coeff_3      <= coeff;
        4 :coeff_4      <= coeff;
        5 :coeff_5      <= coeff;
        6 :coeff_6      <= coeff;
        7 :coeff_7      <= coeff;
        8 :coeff_8      <= coeff;
        9 :coeff_9      <= coeff;
        10:coeff_10     <= coeff;
        11:coeff_11     <= coeff;
        12:coeff_12     <= coeff;
        13:coeff_13     <= coeff;
        14:coeff_14     <= coeff;
        default:
        coeff_15        <= coeff;
endcase
else if (ena && sel) begin
        if (i >= 0)      coeff_0  <= level_0;
        if (i >= 1)     coeff_1  <= level_1;
        if (i >= 2) coeff_2  <= level_2;
        if (i >= 3) coeff_3  <= level_3;
        if (i >= 4) coeff_4  <= level_4;
        if (i >= 5) coeff_5  <= level_5;
        if (i >= 6) coeff_6  <= level_6;
        if (i >= 7) coeff_7  <= level_7;
        if (i >= 8) coeff_8  <= level_8;
        if (i >= 9) coeff_9  <= level_9;
        if (i >= 10)coeff_10 <= level_10;
        if (i >= 11)coeff_11 <= level_11;
        if (i >= 12)coeff_12 <= level_12;
        if (i >= 13)coeff_13 <= level_13;
        if (i >= 14)coeff_14 <= level_14;
        if (i == 15)coeff_15 <= level_15;
end
endmodule

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[/] [cavlc/] [trunk/] [rtl/] [cavlc_read_run_befores.v] - Blame information for rev 6

Line No.	Rev	Author	Line
1	6	qiubin	`//2011-8-16 initiial revision`
2
3			`include "defines.v"
4
5			`module cavlc_read_run_befores(`
6			`clk,`
7			`rst_n,`
8			`ena,`
9			`sel,`
10			`clr,`
11			`ZeroLeft_init,`
12
13			`rbsp,`
14			`i,`
15			`TotalZeros_comb,`
16
17			`level_0,`
18			`level_1,`
19			`level_2,`
20			`level_3,`
21			`level_4,`
22			`level_5,`
23			`level_6,`
24			`level_7,`
25			`level_8,`
26			`level_9,`
27			`level_10,`
28			`level_11,`
29			`level_12,`
30			`level_13,`
31			`level_14,`
32			`level_15,`
33
34			`coeff_0,`
35			`coeff_1,`
36			`coeff_2,`
37			`coeff_3,`
38			`coeff_4,`
39			`coeff_5,`
40			`coeff_6,`
41			`coeff_7,`
42			`coeff_8,`
43			`coeff_9,`
44			`coeff_10,`
45			`coeff_11,`
46			`coeff_12,`
47			`coeff_13,`
48			`coeff_14,`
49			`coeff_15,`
50			`ZeroLeft,`
51			`len_comb`
52			`);`
53			`//----------------------`
54			`//ports`
55			`//----------------------`
56			`input clk;`
57			`input rst_n;`
58			`input ena;`
59			`input sel;`
60			`input clr;`
61			`input ZeroLeft_init;`
62
63			`input [0:10] rbsp;`
64			`input [3:0] i; //range from TotalCoeff-1 to 0`
65			`input [3:0] TotalZeros_comb;`
66
67			`input [8:0] level_0;`
68			`input [8:0] level_1;`
69			`input [8:0] level_2;`
70			`input [8:0] level_3;`
71			`input [8:0] level_4;`
72			`input [8:0] level_5;`
73			`input [8:0] level_6;`
74			`input [8:0] level_7;`
75			`input [8:0] level_8;`
76			`input [8:0] level_9;`
77			`input [8:0] level_10;`
78			`input [8:0] level_11;`
79			`input [8:0] level_12;`
80			`input [8:0] level_13;`
81			`input [8:0] level_14;`
82			`input [8:0] level_15;`
83
84			`output [8:0] coeff_0;`
85			`output [8:0] coeff_1;`
86			`output [8:0] coeff_2;`
87			`output [8:0] coeff_3;`
88			`output [8:0] coeff_4;`
89			`output [8:0] coeff_5;`
90			`output [8:0] coeff_6;`
91			`output [8:0] coeff_7;`
92			`output [8:0] coeff_8;`
93			`output [8:0] coeff_9;`
94			`output [8:0] coeff_10;`
95			`output [8:0] coeff_11;`
96			`output [8:0] coeff_12;`
97			`output [8:0] coeff_13;`
98			`output [8:0] coeff_14;`
99			`output [8:0] coeff_15;`
100
101			`output [3:0] ZeroLeft;`
102
103			`output [3:0] len_comb;`
104
105			`//----------------------`
106			`//regs`
107			`//----------------------`
108			`reg [3:0] run;`
109			`reg [3:0] len;`
110			`reg [8:0] coeff;`
111
112
113			`reg [3:0] len_comb;`
114
115			`//----------------------`
116			`//FFs`
117			`//----------------------`
118			`reg [3:0] ZeroLeft;`
119
120			`reg [8:0] coeff_0;`
121			`reg [8:0] coeff_1;`
122			`reg [8:0] coeff_2;`
123			`reg [8:0] coeff_3;`
124			`reg [8:0] coeff_4;`
125			`reg [8:0] coeff_5;`
126			`reg [8:0] coeff_6;`
127			`reg [8:0] coeff_7;`
128			`reg [8:0] coeff_8;`
129			`reg [8:0] coeff_9;`
130			`reg [8:0] coeff_10;`
131			`reg [8:0] coeff_11;`
132			`reg [8:0] coeff_12;`
133			`reg [8:0] coeff_13;`
134			`reg [8:0] coeff_14;`
135			`reg [8:0] coeff_15;`
136
137			`//----------------------`
138			`//run & len`
139			`//----------------------`
140			`always @(rbsp or ZeroLeft or ena or sel)`
141			`if (ena && sel)`
142			`case(ZeroLeft)`
143
144			`1 : begin len <= 1; run <= rbsp[0]? 0:1; end`
145			`2 : begin if (rbsp[0]) begin`
146			`run <= 0;`
147			`len <= 1;`
148			`end`
149			`else if (rbsp[1]) begin`
150			`run <= 1;`
151			`len <= 2;`
152			`end`
153			`else begin`
154			`run <= 2;`
155			`len <= 2;`
156			`end`
157			`end`
158			`3 : begin`
159			`run <= 3 - rbsp[0:1];`
160			`len <= 2;`
161			`end`
162			`4 : begin`
163			`if (rbsp[0:1] != 0) begin`
164			`run <= 3 - rbsp[0:1];`
165			`len <= 2;`
166			`end`
167			`else begin`
168			`run <= rbsp[2]? 3:4;`
169			`len <= 3;`
170			`end`
171			`end`
172			`5 : begin`
173			`if (rbsp[0]) begin`
174			`run <= rbsp[1]? 0:1;`
175			`len <= 2;`
176			`end`
177			`else if (rbsp[1]) begin`
178			`run <= rbsp[2]? 2:3;`
179			`len <= 3;`
180			`end`
181			`else begin`
182			`run <= rbsp[2]? 4:5;`
183			`len <= 3;`
184			`end`
185			`end`
186			`6 : begin`
187			`if (rbsp[0:1] == 2'b11) begin`
188			`run <= 0;`
189			`len <= 2;`
190			`end`
191			`else begin`
192			`len <= 3;`
193			`case(rbsp[0:2])`
194			`3'b000 : run <= 1;`
195			`3'b001 : run <= 2;`
196			`3'b011 : run <= 3;`
197			`3'b010 : run <= 4;`
198			`3'b101 : run <= 5;`
199			`default: run <= 6;`
200			`endcase`
201			`end`
202			`end`
203			`default : begin`
204			`if (rbsp[0:2] != 0) begin`
205			`run <= 7 - rbsp[0:2];`
206			`len <= 3;`
207			`end`
208			`else begin`
209			`case (1'b1)`
210			`rbsp[3] : begin run <= 7; len <= 4; end`
211			`rbsp[4] : begin run <= 8; len <= 5; end`
212			`rbsp[5] : begin run <= 9; len <= 6; end`
213			`rbsp[6] : begin run <= 10; len <= 7; end`
214			`rbsp[7] : begin run <= 11; len <= 8; end`
215			`rbsp[8] : begin run <= 12; len <= 9; end`
216			`rbsp[9] : begin run <= 13; len <= 10;end`
217			`rbsp[10]: begin run <= 14; len <= 11;end`
218			`default : begin run <= 'bx; len <='bx;end`
219			`endcase`
220			`end`
221			`end`
222			`endcase`
223			`else begin`
224			`len <= 0;`
225			`run <= 0;`
226			`end`
227
228			`//----------------------`
229			`//len_comb`
230			`//----------------------`
231			`always @(*)`
232			`if (i > 0)`
233			`len_comb <= len;`
234			`else`
235			`len_comb <= 0;`
236
237
238			`//----------------------`
239			`//ZeroLeft`
240			`//----------------------`
241			`always @(posedge clk or negedge rst_n)`
242			`if (!rst_n)`
243			`ZeroLeft <= 0;`
244			`else if (ena && clr) //in case TotalCoeff >= max_coeff_num`
245			`ZeroLeft <= 0;`
246			`else if (ena && ZeroLeft_init)`
247			`ZeroLeft <= TotalZeros_comb;`
248			`else if (ena && sel )//if ZeroLeft == 0, run will be 0`
249			`ZeroLeft <= ZeroLeft - run;`
250
251			`//----------------------`
252			`//coeff`
253			`//----------------------`
254			`always @(*)`
255			`if (ena && sel)`
256			`case (i)`
257
258			`1 :coeff <= level_1;`
259			`2 :coeff <= level_2;`
260			`3 :coeff <= level_3;`
261			`4 :coeff <= level_4;`
262			`5 :coeff <= level_5;`
263			`6 :coeff <= level_6;`
264			`7 :coeff <= level_7;`
265			`8 :coeff <= level_8;`
266			`9 :coeff <= level_9;`
267			`10:coeff <= level_10;`
268			`11:coeff <= level_11;`
269			`12:coeff <= level_12;`
270			`13:coeff <= level_13;`
271			`14:coeff <= level_14;`
272			`15:coeff <= level_15;`
273			`endcase`
274			`else`
275			`coeff <= 0;`
276
277			`//----------------------`
278			`//coeff_0 to coeff_15`
279			`//----------------------`
280			`always @(posedge clk or negedge rst_n)`
281			`if (!rst_n) begin`
282			`coeff_0 <= 0; coeff_1 <= 0; coeff_2 <= 0; coeff_3 <= 0;`
283			`coeff_4 <= 0; coeff_5 <= 0; coeff_6 <= 0; coeff_7 <= 0;`
284			`coeff_8 <= 0; coeff_9 <= 0; coeff_10<= 0; coeff_11<= 0;`
285			`coeff_12<= 0; coeff_13<= 0; coeff_14<= 0; coeff_15<= 0;`
286			`end`
287			`else if (ena && clr) begin`
288			`coeff_0 <= 0; coeff_1 <= 0; coeff_2 <= 0; coeff_3 <= 0;`
289			`coeff_4 <= 0; coeff_5 <= 0; coeff_6 <= 0; coeff_7 <= 0;`
290			`coeff_8 <= 0; coeff_9 <= 0; coeff_10<= 0; coeff_11<= 0;`
291			`coeff_12<= 0; coeff_13<= 0; coeff_14<= 0; coeff_15<= 0;`
292			`end`
293			`else if (ena && sel && ZeroLeft > 0)`
294			`case (ZeroLeft+i)`
295			`1 :coeff_1 <= coeff;`
296			`2 :coeff_2 <= coeff;`
297			`3 :coeff_3 <= coeff;`
298			`4 :coeff_4 <= coeff;`
299			`5 :coeff_5 <= coeff;`
300			`6 :coeff_6 <= coeff;`
301			`7 :coeff_7 <= coeff;`
302			`8 :coeff_8 <= coeff;`
303			`9 :coeff_9 <= coeff;`
304			`10:coeff_10 <= coeff;`
305			`11:coeff_11 <= coeff;`
306			`12:coeff_12 <= coeff;`
307			`13:coeff_13 <= coeff;`
308			`14:coeff_14 <= coeff;`
309			`default:`
310			`coeff_15 <= coeff;`
311			`endcase`
312			`else if (ena && sel) begin`
313			`if (i >= 0) coeff_0 <= level_0;`
314			`if (i >= 1) coeff_1 <= level_1;`
315			`if (i >= 2) coeff_2 <= level_2;`
316			`if (i >= 3) coeff_3 <= level_3;`
317			`if (i >= 4) coeff_4 <= level_4;`
318			`if (i >= 5) coeff_5 <= level_5;`
319			`if (i >= 6) coeff_6 <= level_6;`
320			`if (i >= 7) coeff_7 <= level_7;`
321			`if (i >= 8) coeff_8 <= level_8;`
322			`if (i >= 9) coeff_9 <= level_9;`
323			`if (i >= 10)coeff_10 <= level_10;`
324			`if (i >= 11)coeff_11 <= level_11;`
325			`if (i >= 12)coeff_12 <= level_12;`
326			`if (i >= 13)coeff_13 <= level_13;`
327			`if (i >= 14)coeff_14 <= level_14;`
328			`if (i == 15)coeff_15 <= level_15;`
329			`end`
330			`endmodule`