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/*
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* motcomp_motvec.v
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*
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* Copyright (c) 2007 Koen De Vleeschauwer.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* motcomp_motvec - Motion compensation: motion vector selection
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*/
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`include "timescale.v"
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`undef DEBUG
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//`define DEBUG 1
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module motcomp_motvec (
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clk, clk_en, rst,
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picture_coding_type, picture_structure, motion_type, dct_type,
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macroblock_motion_forward, macroblock_motion_backward, macroblock_intra, column, row, block, comp, macroblock_address_in, motvec_update,
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pmv_0_0_0, pmv_0_0_1, pmv_1_0_0, pmv_1_0_1, pmv_0_1_0, pmv_0_1_1, pmv_1_1_0, pmv_1_1_1,
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dmv_0_0, dmv_0_1, dmv_1_0, dmv_1_1,
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motion_vert_field_select_0_0, motion_vert_field_select_0_1, motion_vert_field_select_1_0, motion_vert_field_select_1_1,
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second_field,
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forward_reference_frame, backward_reference_frame, current_frame,
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frame_picture, field_in_frame, comp_out, macroblock_address_out,
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delta_x, delta_y,
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fwd_src_frame, fwd_src_field, fwd_mv_x, fwd_mv_y, fwd_valid,
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bwd_src_frame, bwd_src_field, bwd_mv_x, bwd_mv_y, bwd_valid,
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recon_dst_frame, recon_dst_field, recon_delta_x, recon_delta_y, recon_valid,
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write_recon,
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dct_block_cmd, dct_block_en
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);
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input clk; // clock
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input clk_en; // clock enable
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input rst; // synchronous active low reset
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input [2:0]picture_coding_type; // identifies whether a picture is an I, P or B picture.
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input [1:0]picture_structure; // one of FRAME_PICTURE, TOP_FIELD or BOTTOM_FIELD
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input [1:0]motion_type; // one of MC_FIELD, MC_FRAME, MC_16X8 or MC_DMV
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input dct_type; // either DCT_FIELD or DCT_FRAME
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input macroblock_motion_forward;
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input macroblock_motion_backward;
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input macroblock_intra;
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input column;
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input signed [3:0]row;
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input [1:0]block; // number of block, 0..3.
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input [1:0]comp;
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input [12:0]macroblock_address_in;
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input motvec_update; // asserted when pmv_x_x_x, dmv_x_x valid
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input motion_vert_field_select_0_0; // motion_vertical_field_select. Indicates which reference field shall be used to form the prediction.
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// If motion_vertical_field_select[r][s] is zero, then the top reference field shall be used,
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// if it is one then the bottom reference field shall be used.
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input motion_vert_field_select_0_1;
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input motion_vert_field_select_1_0;
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input motion_vert_field_select_1_1;
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input second_field;
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input [2:0]forward_reference_frame; /* forward reference frame. Has value 3'd0 or 3'd1 */
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input [2:0]backward_reference_frame; /* backward reference frame. Has value 3'd0 or 3'd1 */
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input [2:0]current_frame; /* current frame. */
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input signed [12:0]pmv_0_0_0; // predicted motion vector
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input signed [12:0]pmv_0_0_1; // predicted motion vector
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input signed [12:0]pmv_1_0_0; // predicted motion vector
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input signed [12:0]pmv_1_0_1; // predicted motion vector
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input signed [12:0]pmv_0_1_0; // predicted motion vector
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input signed [12:0]pmv_0_1_1; // predicted motion vector
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input signed [12:0]pmv_1_1_0; // predicted motion vector
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input signed [12:0]pmv_1_1_1; // predicted motion vector
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input signed [12:0]dmv_0_0; // dual-prime motion vector.
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input signed [12:0]dmv_0_1; // dual-prime motion vector.
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input signed [12:0]dmv_1_0; // dual-prime motion vector.
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input signed [12:0]dmv_1_1; // dual-prime motion vector.
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`include "mem_codes.v"
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`include "vld_codes.v"
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`include "motcomp_dctcodes.v"
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/*
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frame_picture and field_in_frame determine whether to treat the picture as a progressive frame picture, an interlaced frame picture or a field picture.
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If frame_picture == 1 and field_in_frame == 0 picture is a progressive frame picture.
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If frame_picture == 1 and field_in_frame == 1 picture is an interlaced frame picture, and fwd_src_field, bwd_src_field or recon_dst_field determine which of the two fields to use.
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If frame_picture == 0 picture is an field picture, and fwd_src_field, bwd_src_field or recon_dst_field determine which of the two fields to use.
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*/
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output reg frame_picture;
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output reg field_in_frame;
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output reg [1:0]comp_out; /* Component. One of COMP_Y, COMP_CR, COMP_CB */
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output reg [12:0]macroblock_address_out; /* macroblock address, 0... */
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output reg signed [12:0]delta_x; /* horizontal offset, positive, in pixels, applied to forward and backward motion compensation */
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output reg signed [12:0]delta_y; /* vertical offset, positive, in pixels, applied to forward and backward motion compensation */
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output reg [2:0]fwd_src_frame; /* forward source frame */
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output reg fwd_src_field; /* forward source field */
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output reg signed [12:0]fwd_mv_x; /* forward motion vector, horizontal component, signed, in halfpixels */
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output reg signed [12:0]fwd_mv_y; /* forward motion vector, horizontal component, signed, in halfpixels */
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output reg fwd_valid; /* assert to enable forward motion compensation */
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output reg [2:0]bwd_src_frame; /* backward source frame */
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output reg bwd_src_field; /* backward source field */
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output reg signed [12:0]bwd_mv_x; /* backward motion vector, horizontal component, signed, in halfpixels */
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output reg signed [12:0]bwd_mv_y; /* backward motion vector, horizontal component, signed, in halfpixels */
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output reg bwd_valid; /* assert to enable backward motion compensation */
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output reg [2:0]recon_dst_frame; /* reconstruction destination frame */
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output reg recon_dst_field; /* reconstruction destination field */
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output reg signed [12:0]recon_delta_x; /* horizontal offset, positive, in pixels, applied to reconstruction */
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output reg signed [12:0]recon_delta_y; /* vertical offset, positive, in pixels, applied to reconstruction */
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output reg write_recon; /* write_recon == 0 causes recon to just load the row but not to write any reconstructed pixels to memory.
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write_recon == 1 causes recon not only to load the row, but also to write the reconstructed pixels to memory.
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Typically write_recon == 0 in row 0 (load), write_recon == 1 in row 1..8 (reconstruct)
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*/
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output reg recon_valid; /* assert to enable motion compensation reconstruction */
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output reg [2:0]dct_block_cmd; /* dct frame/field coding translation command. Issued when dct_block_en is asserted. See ISO/IEC 13818-2, par. 6.1.3, fig. 6-13 and 6-14. */
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output reg dct_block_en; /* dct frame/field coding translation enable. Asserted once per block. See ISO/IEC 13818-2, par. 6.1.3, fig. 6-13 and 6-14. */
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reg next_frame_picture;
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reg next_field_in_frame;
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reg [1:0]next_comp_out;
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reg [12:0]next_macroblock_address_out;
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reg signed [12:0]next_delta_x;
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reg signed [12:0]next_delta_y;
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reg [2:0]next_fwd_src_frame;
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reg next_fwd_src_field;
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reg signed [12:0]next_fwd_mv_x;
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reg signed [12:0]next_fwd_mv_y;
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reg next_fwd_valid;
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reg [2:0]next_bwd_src_frame;
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reg next_bwd_src_field;
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reg signed [12:0]next_bwd_mv_x;
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reg signed [12:0]next_bwd_mv_y;
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reg next_bwd_valid;
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reg [2:0]next_recon_dst_frame;
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reg next_recon_dst_field;
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reg signed [12:0]next_recon_delta_x;
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reg signed [12:0]next_recon_delta_y;
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reg next_write_recon;
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reg next_recon_valid;
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reg [2:0]next_dct_block_cmd;
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reg next_dct_block_en;
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`ifdef DEBUG
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reg [63:0]mc_descript;
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reg [63:0]next_mc_descript;
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`endif
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/* Table 7-13 and 7-14. Determine motion vectors, source and destination field and frame to use. */
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wire current_field = (picture_structure == BOTTOM_FIELD);
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wire current_field_in_frame = (comp == COMP_Y) ? ((block == 2'd2) || (block == 2'd3)) : (block == 2'd1);
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wire upper_half = (comp == COMP_Y) ? ((block == 2'd0) || (block == 2'd1)) : (block == 2'd0);
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wire signed [12:0]row_ext = {{9{row[3]}}, row};
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always @*
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if (motvec_update)
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begin
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next_comp_out = comp;
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next_macroblock_address_out = macroblock_address_in;
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next_dct_block_en = (block == 2'd0) && (row == -4'sd1) && (column == 1'd0);
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end
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else /* no motvec_update */
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begin
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next_comp_out = comp_out;
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next_macroblock_address_out = macroblock_address_out;
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next_dct_block_en = 1'b0;
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end
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always @*
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if (motvec_update && (picture_structure == FRAME_PICTURE))
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begin
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if ((motion_type == MC_FRAME) || (~macroblock_motion_forward && (picture_coding_type == P_TYPE))) /* frame-based prediction in frame picture, including zero motion vector in P-pictures */ // XXX Check
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begin
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next_frame_picture = 1'b1;
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next_field_in_frame = 1'b0;
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next_delta_x = (column ? 13'sd8 : 13'sd0) + (((comp == COMP_Y) && ((block == 2'd1) || (block == 2'd3))) ? 13'sd8 : 13'sd0);
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next_delta_y = row_ext + 13'sd1 + ((comp == COMP_Y) ? (((block == 2'd2) || (block == 2'd3)) ? 13'sd8 : 13'sd0) : ((block == 2'd1) ? 13'sd4 : 13'sd0));
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next_fwd_src_frame = forward_reference_frame;
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next_fwd_src_field = 1'b0;
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next_fwd_mv_x = pmv_0_0_0;
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next_fwd_mv_y = pmv_0_0_1;
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next_fwd_valid = (macroblock_motion_forward || (picture_coding_type == P_TYPE)) && ~macroblock_intra; /* forward prediction, including zero motion vector in P-pictures */
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next_bwd_src_frame = backward_reference_frame;
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next_bwd_src_field = 1'b0;
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next_bwd_mv_x = pmv_0_1_0;
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next_bwd_mv_y = pmv_0_1_1;
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next_bwd_valid = macroblock_motion_backward && ~macroblock_intra; /* backward prediction */
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next_recon_dst_frame = current_frame;
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next_recon_dst_field = 1'b0;
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next_recon_delta_x = (((comp == COMP_Y) && ((block == 2'd1) || (block == 2'd3))) ? 13'sd8 : 13'sd0);
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next_recon_delta_y = row_ext + ((comp == COMP_Y) ? (((block == 2'd2) || (block == 2'd3)) ? 13'sd8 : 13'sd0) : ((block == 2'd1) ? 13'sd4 : 13'sd0));
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next_recon_valid = (column == 1'd1);
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next_write_recon = (row != -4'sd1);
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next_dct_block_cmd = (comp == COMP_Y) ? ((dct_type == DCT_FRAME) ? DCT_L4_PASS : DCT_L4_TOP_FIELD_TO_FRAME) : DCT_C1_PASS; /* 4:2:0 chromi blocks are always frame coding, even if dct_type == DCT_FIELD. par. 6.1.3 */
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`ifdef DEBUG
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next_mc_descript = "MC_FRAME";
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`endif
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end
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else if (motion_type == MC_FIELD) /* field-based prediction in frame picture. vertical dimensions divided by 2 to scale from frame to field. */
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begin
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next_frame_picture = 1'b1;
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next_field_in_frame = 1'b1;
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next_delta_x = (column ? 13'sd8 : 13'sd0) + (((comp == COMP_Y) && ((block == 2'd1) || (block == 2'd3))) ? 13'sd8 : 13'sd0);
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next_delta_y = row_ext + 13'sd1;
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next_fwd_src_frame = forward_reference_frame;
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next_fwd_src_field = ~current_field_in_frame ? motion_vert_field_select_0_0 /* top field */ : motion_vert_field_select_1_0 /* bottom field */;
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next_fwd_mv_x = ~current_field_in_frame ? pmv_0_0_0 /* top field */ : pmv_1_0_0 /* bottom field */;
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next_fwd_mv_y = ~current_field_in_frame ? (pmv_0_0_1 >>> 1) /* top field */ : (pmv_1_0_1 >>> 1) /* bottom field */;
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next_fwd_valid = macroblock_motion_forward && ~macroblock_intra; /* forward prediction */
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next_bwd_src_frame = backward_reference_frame;
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next_bwd_src_field = ~current_field_in_frame ? motion_vert_field_select_0_1 /* top field */ : motion_vert_field_select_1_1 /* bottom field */;
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next_bwd_mv_x = ~current_field_in_frame ? pmv_0_1_0 /* top field */ : pmv_1_1_0 /* bottom field */;
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next_bwd_mv_y = ~current_field_in_frame ? (pmv_0_1_1 >>> 1) /* top field */ : (pmv_1_1_1 >>> 1) /* bottom field */;
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next_bwd_valid = macroblock_motion_backward && ~macroblock_intra; /* backward prediction */
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next_recon_dst_frame = current_frame;
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next_recon_dst_field = current_field_in_frame;
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next_recon_delta_x = (((comp == COMP_Y) && ((block == 2'd1) || (block == 2'd3))) ? 13'sd8 : 13'sd0);
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next_recon_delta_y = row_ext;
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next_recon_valid = (column == 1'b1);
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next_write_recon = (row != -4'sd1);
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next_dct_block_cmd = (comp == COMP_Y) ? ((dct_type == DCT_FIELD) ? DCT_L4_PASS : DCT_L4_FRAME_TO_TOP_FIELD) : DCT_C1_FRAME_TO_TOP_FIELD;
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`ifdef DEBUG
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next_mc_descript = "MC_FIELD";
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`endif
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end
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else if (motion_type == MC_DMV) /* dual prime prediction in frame picture */
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begin
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next_frame_picture = 1'b1;
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next_field_in_frame = 1'b1;
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next_delta_x = (column ? 13'sd8 : 13'sd0) + (((comp == COMP_Y) && ((block == 2'd1) || (block == 2'd3))) ? 13'sd8 : 13'sd0);
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next_delta_y = row_ext + 13'sd1;
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next_fwd_src_frame = forward_reference_frame;
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next_fwd_src_field = current_field_in_frame;
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next_fwd_mv_x = pmv_0_0_0;
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next_fwd_mv_y = pmv_0_0_1 >>> 1;
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next_fwd_valid = macroblock_motion_forward && ~macroblock_intra; /* forward prediction */
|
| 247 |
|
|
next_bwd_src_frame = forward_reference_frame;
|
| 248 |
|
|
next_bwd_src_field = ~current_field_in_frame;
|
| 249 |
|
|
next_bwd_mv_x = current_field_in_frame ? dmv_1_0 /* bottom field */ : dmv_0_0 /* top field */;
|
| 250 |
|
|
next_bwd_mv_y = current_field_in_frame ? dmv_1_1 /* bottom field */ : dmv_0_1 /* top field */;
|
| 251 |
|
|
next_bwd_valid = macroblock_motion_forward && ~macroblock_intra; /* forward prediction */
|
| 252 |
|
|
next_recon_dst_frame = current_frame;
|
| 253 |
|
|
next_recon_dst_field = current_field_in_frame;
|
| 254 |
|
|
next_recon_delta_x = (((comp == COMP_Y) && ((block == 2'd1) || (block == 2'd3))) ? 13'sd8 : 13'sd0);
|
| 255 |
|
|
next_recon_delta_y = row_ext;
|
| 256 |
|
|
next_recon_valid = (column == 1'b1);
|
| 257 |
|
|
next_write_recon = (row != -4'sd1);
|
| 258 |
|
|
next_dct_block_cmd = (comp == COMP_Y) ? ((dct_type == DCT_FIELD) ? DCT_L4_PASS : DCT_L4_FRAME_TO_TOP_FIELD) : DCT_C1_FRAME_TO_TOP_FIELD;
|
| 259 |
|
|
`ifdef DEBUG
|
| 260 |
|
|
next_mc_descript = "MC_DMV";
|
| 261 |
|
|
`endif
|
| 262 |
|
|
end
|
| 263 |
|
|
|
| 264 |
|
|
else /* invalid motion_type for frame picture, should never happen. flush dct blocks to avoid dct fifo stalling */
|
| 265 |
|
|
begin
|
| 266 |
|
|
next_frame_picture = 1'b1;
|
| 267 |
|
|
next_field_in_frame = 1'b0;
|
| 268 |
|
|
next_delta_x = 13'sd0;
|
| 269 |
|
|
next_delta_y = 13'sd0;
|
| 270 |
|
|
next_fwd_src_frame = fwd_src_frame;
|
| 271 |
|
|
next_fwd_src_field = 1'b0;
|
| 272 |
|
|
next_fwd_mv_x = 13'sd0;
|
| 273 |
|
|
next_fwd_mv_y = 13'sd0;
|
| 274 |
|
|
next_fwd_valid = 1'b0;
|
| 275 |
|
|
next_bwd_src_frame = bwd_src_frame;
|
| 276 |
|
|
next_bwd_src_field = 1'b0;
|
| 277 |
|
|
next_bwd_mv_x = 13'sd0;
|
| 278 |
|
|
next_bwd_mv_y = 13'sd0;
|
| 279 |
|
|
next_bwd_valid = 1'b0;
|
| 280 |
|
|
next_recon_dst_frame = current_frame;
|
| 281 |
|
|
next_recon_dst_field = 1'b0;
|
| 282 |
|
|
next_recon_delta_x = (((comp == COMP_Y) && ((block == 2'd1) || (block == 2'd3))) ? 13'sd8 : 13'sd0);
|
| 283 |
|
|
next_recon_delta_y = row_ext + ((comp == COMP_Y) ? (((block == 2'd2) || (block == 2'd3)) ? 13'sd8 : 13'sd0) : ((block == 2'd1) ? 13'sd4 : 13'sd0));
|
| 284 |
|
|
next_recon_valid = (column == 1'd1);
|
| 285 |
|
|
next_write_recon = (row != -4'sd1);
|
| 286 |
|
|
next_dct_block_cmd = (comp == COMP_Y) ? ((dct_type == DCT_FRAME) ? DCT_L4_PASS : DCT_L4_TOP_FIELD_TO_FRAME) : DCT_C1_PASS;
|
| 287 |
|
|
`ifdef DEBUG
|
| 288 |
|
|
next_mc_descript = (motion_type == MC_NONE) ? "MC_NONE" : "MC_ERR";
|
| 289 |
|
|
`endif
|
| 290 |
|
|
end
|
| 291 |
|
|
end
|
| 292 |
|
|
|
| 293 |
|
|
else if (motvec_update) /* ((picture_structure == TOP_FIELD) || (picture_structure == BOTTOM_FIELD)) */
|
| 294 |
|
|
begin
|
| 295 |
|
|
if ((motion_type == MC_FIELD) || (~macroblock_motion_forward && (picture_coding_type == P_TYPE))) /* field-based prediction in field picture, including zero motion vector in P-pictures */
|
| 296 |
|
|
begin
|
| 297 |
|
|
next_frame_picture = 1'b0;
|
| 298 |
|
|
next_field_in_frame = 1'b0;
|
| 299 |
|
|
next_delta_x = (column ? 13'sd8 : 13'sd0) + (((comp == COMP_Y) && ((block == 2'd1) || (block == 2'd3))) ? 13'sd8 : 13'sd0);
|
| 300 |
|
|
next_delta_y = row_ext + 13'sd1 + ((comp == COMP_Y) ? (((block == 2'd2) || (block == 2'd3)) ? 13'sd8 : 13'sd0) : ((block == 2'd1) ? 13'sd4 : 13'sd0));
|
| 301 |
|
|
next_fwd_src_frame = ((picture_coding_type == P_TYPE) && second_field && (current_field != motion_vert_field_select_0_0)) ? backward_reference_frame /* same frame */ : forward_reference_frame /* previous frame */;
|
| 302 |
|
|
next_fwd_src_field = motion_vert_field_select_0_0;
|
| 303 |
|
|
next_fwd_mv_x = pmv_0_0_0;
|
| 304 |
|
|
next_fwd_mv_y = pmv_0_0_1;
|
| 305 |
|
|
next_fwd_valid = (macroblock_motion_forward || (picture_coding_type == P_TYPE)) && ~macroblock_intra;
|
| 306 |
|
|
next_bwd_src_frame = backward_reference_frame;
|
| 307 |
|
|
next_bwd_src_field = motion_vert_field_select_0_1;
|
| 308 |
|
|
next_bwd_mv_x = pmv_0_1_0;
|
| 309 |
|
|
next_bwd_mv_y = pmv_0_1_1;
|
| 310 |
|
|
next_bwd_valid = macroblock_motion_backward && ~macroblock_intra;
|
| 311 |
|
|
next_recon_dst_frame = current_frame;
|
| 312 |
|
|
next_recon_dst_field = current_field;
|
| 313 |
|
|
next_recon_delta_x = (((comp == COMP_Y) && ((block == 2'd1) || (block == 2'd3))) ? 13'sd8 : 13'sd0);
|
| 314 |
|
|
next_recon_delta_y = row_ext + ((comp == COMP_Y) ? (((block == 2'd2) || (block == 2'd3)) ? 13'sd8 : 13'sd0) : ((block == 2'd1) ? 13'sd4 : 13'sd0));
|
| 315 |
|
|
next_recon_valid = (column == 1'd1);
|
| 316 |
|
|
next_write_recon = (row != -4'sd1);
|
| 317 |
|
|
next_dct_block_cmd = (comp == COMP_Y) ? DCT_L4_PASS : DCT_C1_PASS;
|
| 318 |
|
|
`ifdef DEBUG
|
| 319 |
|
|
next_mc_descript = "MC_FIELD";
|
| 320 |
|
|
`endif
|
| 321 |
|
|
end
|
| 322 |
|
|
|
| 323 |
|
|
else if (motion_type == MC_16X8) /* 16x8 based motion compensation in field picture */
|
| 324 |
|
|
begin
|
| 325 |
|
|
next_frame_picture = 1'b0;
|
| 326 |
|
|
next_field_in_frame = 1'b0;
|
| 327 |
|
|
next_delta_x = (column ? 13'sd8 : 13'sd0) + (((comp == COMP_Y) && ((block == 2'd1) || (block == 2'd3))) ? 13'sd8 : 13'sd0);
|
| 328 |
|
|
next_delta_y = row_ext + 13'sd1 + ((comp == COMP_Y) ? (((block == 2'd2) || (block == 2'd3)) ? 13'sd8 : 13'sd0) : ((block == 2'd1) ? 13'sd4 : 13'sd0));
|
| 329 |
|
|
next_fwd_src_frame = ((picture_coding_type == P_TYPE) && second_field && (current_field != (upper_half ? motion_vert_field_select_0_0 : motion_vert_field_select_1_0))) ? backward_reference_frame /* same frame */ : forward_reference_frame /* previous frame */;
|
| 330 |
|
|
next_fwd_src_field = upper_half ? motion_vert_field_select_0_0 : motion_vert_field_select_1_0;
|
| 331 |
|
|
next_fwd_mv_x = upper_half ? pmv_0_0_0 : pmv_1_0_0;
|
| 332 |
|
|
next_fwd_mv_y = upper_half ? pmv_0_0_1 : pmv_1_0_1;
|
| 333 |
|
|
next_fwd_valid = macroblock_motion_forward && ~macroblock_intra;
|
| 334 |
|
|
next_bwd_src_frame = backward_reference_frame;
|
| 335 |
|
|
next_bwd_src_field = upper_half ? motion_vert_field_select_0_1 : motion_vert_field_select_1_1;
|
| 336 |
|
|
next_bwd_mv_x = upper_half ? pmv_0_1_0 : pmv_1_1_0;
|
| 337 |
|
|
next_bwd_mv_y = upper_half ? pmv_0_1_1 : pmv_1_1_1;
|
| 338 |
|
|
next_bwd_valid = macroblock_motion_backward && ~macroblock_intra;
|
| 339 |
|
|
next_recon_dst_frame = current_frame;
|
| 340 |
|
|
next_recon_dst_field = current_field;
|
| 341 |
|
|
next_recon_delta_x = (((comp == COMP_Y) && ((block == 2'd1) || (block == 2'd3))) ? 13'sd8 : 13'sd0);
|
| 342 |
|
|
next_recon_delta_y = row_ext + ((comp == COMP_Y) ? (((block == 2'd2) || (block == 2'd3)) ? 13'sd8 : 13'sd0) : ((block == 2'd1) ? 13'sd4 : 13'sd0));
|
| 343 |
|
|
next_recon_valid = (column == 1'b1);
|
| 344 |
|
|
next_write_recon = (row != -4'sd1);
|
| 345 |
|
|
next_dct_block_cmd = (comp == COMP_Y) ? DCT_L4_PASS : DCT_C1_PASS;
|
| 346 |
|
|
`ifdef DEBUG
|
| 347 |
|
|
next_mc_descript = "MC_16X8";
|
| 348 |
|
|
`endif
|
| 349 |
|
|
end
|
| 350 |
|
|
|
| 351 |
|
|
else if (motion_type == MC_DMV) /* dual-prime prediction in field picture */
|
| 352 |
|
|
begin
|
| 353 |
|
|
next_frame_picture = 1'b0;
|
| 354 |
|
|
next_field_in_frame = 1'b0;
|
| 355 |
|
|
next_delta_x = (column ? 13'sd8 : 13'sd0) + (((comp == COMP_Y) && ((block == 2'd1) || (block == 2'd3))) ? 13'sd8 : 13'sd0);
|
| 356 |
|
|
next_delta_y = row_ext + 13'sd1 + ((comp == COMP_Y) ? (((block == 2'd2) || (block == 2'd3)) ? 13'sd8 : 13'sd0) : ((block == 2'd1) ? 13'sd4 : 13'sd0));
|
| 357 |
|
|
next_fwd_src_frame = forward_reference_frame;
|
| 358 |
|
|
next_fwd_src_field = current_field; /* prediction from field of same parity */
|
| 359 |
|
|
next_fwd_mv_x = pmv_0_0_0;
|
| 360 |
|
|
next_fwd_mv_y = pmv_0_0_1;
|
| 361 |
|
|
next_fwd_valid = macroblock_motion_forward && ~macroblock_intra;
|
| 362 |
|
|
next_bwd_src_frame = (second_field) ? backward_reference_frame /* same frame */ : forward_reference_frame /* previous frame */;
|
| 363 |
|
|
next_bwd_src_field = ~current_field; /* prediction from field of opposite parity */
|
| 364 |
|
|
next_bwd_mv_x = dmv_0_0;
|
| 365 |
|
|
next_bwd_mv_y = dmv_0_1;
|
| 366 |
|
|
next_bwd_valid = macroblock_motion_forward && ~macroblock_intra;
|
| 367 |
|
|
next_recon_dst_frame = current_frame;
|
| 368 |
|
|
next_recon_dst_field = current_field;
|
| 369 |
|
|
next_recon_delta_x = (((comp == COMP_Y) && ((block == 2'd1) || (block == 2'd3))) ? 13'sd8 : 13'sd0);
|
| 370 |
|
|
next_recon_delta_y = row_ext + ((comp == COMP_Y) ? (((block == 2'd2) || (block == 2'd3)) ? 13'sd8 : 13'sd0) : ((block == 2'd1) ? 13'sd4 : 13'sd0));
|
| 371 |
|
|
next_recon_valid = (column == 1'b1);
|
| 372 |
|
|
next_write_recon = (row != -4'sd1);
|
| 373 |
|
|
next_dct_block_cmd = (comp == COMP_Y) ? DCT_L4_PASS : DCT_C1_PASS;
|
| 374 |
|
|
`ifdef DEBUG
|
| 375 |
|
|
next_mc_descript = "MC_DMV";
|
| 376 |
|
|
`endif
|
| 377 |
|
|
end
|
| 378 |
|
|
|
| 379 |
|
|
else /* invalid motion_type for field picture, should never happen. flush dct blocks to avoid dct fifo stalling */
|
| 380 |
|
|
begin
|
| 381 |
|
|
next_frame_picture = 1'b0;
|
| 382 |
|
|
next_field_in_frame = 1'b0;
|
| 383 |
|
|
next_delta_x = 13'sd0;
|
| 384 |
|
|
next_delta_y = 13'sd0;
|
| 385 |
|
|
next_fwd_src_frame = fwd_src_frame;
|
| 386 |
|
|
next_fwd_src_field = current_field;
|
| 387 |
|
|
next_fwd_mv_x = 13'sd0;
|
| 388 |
|
|
next_fwd_mv_y = 13'sd0;
|
| 389 |
|
|
next_fwd_valid = 1'b0;
|
| 390 |
|
|
next_bwd_src_frame = bwd_src_frame;
|
| 391 |
|
|
next_bwd_src_field = current_field;
|
| 392 |
|
|
next_bwd_mv_x = 13'sd0;
|
| 393 |
|
|
next_bwd_mv_y = 13'sd0;
|
| 394 |
|
|
next_bwd_valid = 1'b0;
|
| 395 |
|
|
next_recon_dst_frame = current_frame;
|
| 396 |
|
|
next_recon_dst_field = current_field;
|
| 397 |
|
|
next_recon_delta_x = (((comp == COMP_Y) && ((block == 2'd1) || (block == 2'd3))) ? 13'sd8 : 13'sd0);
|
| 398 |
|
|
next_recon_delta_y = row_ext + ((comp == COMP_Y) ? (((block == 2'd2) || (block == 2'd3)) ? 13'sd8 : 13'sd0) : ((block == 2'd1) ? 13'sd4 : 13'sd0));
|
| 399 |
|
|
next_recon_valid = (column == 1'd1);
|
| 400 |
|
|
next_write_recon = (row != -4'sd1);
|
| 401 |
|
|
next_dct_block_cmd = (comp == COMP_Y) ? DCT_L4_PASS : DCT_C1_PASS;
|
| 402 |
|
|
`ifdef DEBUG
|
| 403 |
|
|
next_mc_descript = (motion_type == MC_NONE) ? "MC_NONE" : "MC_ERR";
|
| 404 |
|
|
`endif
|
| 405 |
|
|
end
|
| 406 |
|
|
end
|
| 407 |
|
|
|
| 408 |
|
|
else /* no motvec_update */
|
| 409 |
|
|
begin
|
| 410 |
|
|
next_frame_picture = frame_picture;
|
| 411 |
|
|
next_field_in_frame = field_in_frame;
|
| 412 |
|
|
next_delta_x = delta_x;
|
| 413 |
|
|
next_delta_y = delta_y;
|
| 414 |
|
|
next_fwd_src_frame = fwd_src_frame;
|
| 415 |
|
|
next_fwd_src_field = fwd_src_field;
|
| 416 |
|
|
next_fwd_mv_x = fwd_mv_x;
|
| 417 |
|
|
next_fwd_mv_y = fwd_mv_y;
|
| 418 |
|
|
next_fwd_valid = 1'b0;
|
| 419 |
|
|
next_bwd_src_frame = bwd_src_frame;
|
| 420 |
|
|
next_bwd_src_field = bwd_src_field;
|
| 421 |
|
|
next_bwd_mv_x = bwd_mv_x;
|
| 422 |
|
|
next_bwd_mv_y = bwd_mv_y;
|
| 423 |
|
|
next_bwd_valid = 1'b0;
|
| 424 |
|
|
next_recon_dst_frame = recon_dst_frame;
|
| 425 |
|
|
next_recon_dst_field = recon_dst_field;
|
| 426 |
|
|
next_recon_delta_x = recon_delta_x;
|
| 427 |
|
|
next_recon_delta_y = recon_delta_y;
|
| 428 |
|
|
next_recon_valid = 1'b0;
|
| 429 |
|
|
next_write_recon = write_recon;
|
| 430 |
|
|
next_dct_block_cmd = dct_block_cmd;
|
| 431 |
|
|
`ifdef DEBUG
|
| 432 |
|
|
next_mc_descript = "MC_NONE";
|
| 433 |
|
|
`endif
|
| 434 |
|
|
end
|
| 435 |
|
|
|
| 436 |
|
|
|
| 437 |
|
|
always @(posedge clk)
|
| 438 |
|
|
if (~rst)
|
| 439 |
|
|
begin
|
| 440 |
|
|
frame_picture <= 1'b0;
|
| 441 |
|
|
field_in_frame <= 1'b0;
|
| 442 |
|
|
comp_out <= COMP_Y;
|
| 443 |
|
|
macroblock_address_out <= 13'd0;
|
| 444 |
|
|
delta_x <= 13'sd0;
|
| 445 |
|
|
delta_y <= 13'sd0;
|
| 446 |
|
|
fwd_src_frame <= 3'd0;
|
| 447 |
|
|
fwd_src_field <= 1'd0;
|
| 448 |
|
|
fwd_mv_x <= 13'sd0;
|
| 449 |
|
|
fwd_mv_y <= 13'sd0;
|
| 450 |
|
|
fwd_valid <= 1'b0;
|
| 451 |
|
|
bwd_src_frame <= 3'd0;
|
| 452 |
|
|
bwd_src_field <= 1'd0;
|
| 453 |
|
|
bwd_mv_x <= 13'sd0;
|
| 454 |
|
|
bwd_mv_y <= 13'sd0;
|
| 455 |
|
|
bwd_valid <= 1'b0;
|
| 456 |
|
|
recon_dst_frame <= 3'd0;
|
| 457 |
|
|
recon_dst_field <= 1'd0;
|
| 458 |
|
|
recon_delta_x <= 13'sd0;
|
| 459 |
|
|
recon_delta_y <= 13'sd0;
|
| 460 |
|
|
recon_valid <= 1'b0;
|
| 461 |
|
|
write_recon <= 1'b0;
|
| 462 |
|
|
dct_block_cmd <= 2'd0;
|
| 463 |
|
|
dct_block_en <= 1'b0;
|
| 464 |
|
|
`ifdef DEBUG
|
| 465 |
|
|
mc_descript <= "";
|
| 466 |
|
|
`endif
|
| 467 |
|
|
end
|
| 468 |
|
|
else if (clk_en)
|
| 469 |
|
|
begin
|
| 470 |
|
|
frame_picture <= next_frame_picture;
|
| 471 |
|
|
field_in_frame <= next_field_in_frame;
|
| 472 |
|
|
comp_out <= next_comp_out;
|
| 473 |
|
|
macroblock_address_out <= next_macroblock_address_out;
|
| 474 |
|
|
delta_x <= next_delta_x;
|
| 475 |
|
|
delta_y <= next_delta_y;
|
| 476 |
|
|
fwd_src_frame <= next_fwd_src_frame;
|
| 477 |
|
|
fwd_src_field <= next_fwd_src_field;
|
| 478 |
|
|
fwd_mv_x <= next_fwd_mv_x;
|
| 479 |
|
|
fwd_mv_y <= next_fwd_mv_y;
|
| 480 |
|
|
fwd_valid <= next_fwd_valid;
|
| 481 |
|
|
bwd_src_frame <= next_bwd_src_frame;
|
| 482 |
|
|
bwd_src_field <= next_bwd_src_field;
|
| 483 |
|
|
bwd_mv_x <= next_bwd_mv_x;
|
| 484 |
|
|
bwd_mv_y <= next_bwd_mv_y;
|
| 485 |
|
|
bwd_valid <= next_bwd_valid;
|
| 486 |
|
|
recon_dst_frame <= next_recon_dst_frame;
|
| 487 |
|
|
recon_dst_field <= next_recon_dst_field;
|
| 488 |
|
|
recon_delta_x <= next_recon_delta_x;
|
| 489 |
|
|
recon_delta_y <= next_recon_delta_y;
|
| 490 |
|
|
recon_valid <= next_recon_valid;
|
| 491 |
|
|
write_recon <= next_write_recon;
|
| 492 |
|
|
dct_block_cmd <= next_dct_block_cmd;
|
| 493 |
|
|
dct_block_en <= next_dct_block_en;
|
| 494 |
|
|
`ifdef DEBUG
|
| 495 |
|
|
mc_descript <= next_mc_descript;
|
| 496 |
|
|
`endif
|
| 497 |
|
|
end
|
| 498 |
|
|
else
|
| 499 |
|
|
begin
|
| 500 |
|
|
frame_picture <= frame_picture;
|
| 501 |
|
|
field_in_frame <= field_in_frame;
|
| 502 |
|
|
comp_out <= comp_out;
|
| 503 |
|
|
macroblock_address_out <= macroblock_address_out;
|
| 504 |
|
|
delta_x <= delta_x;
|
| 505 |
|
|
delta_y <= delta_y;
|
| 506 |
|
|
fwd_src_frame <= fwd_src_frame;
|
| 507 |
|
|
fwd_src_field <= fwd_src_field;
|
| 508 |
|
|
fwd_mv_x <= fwd_mv_x;
|
| 509 |
|
|
fwd_mv_y <= fwd_mv_y;
|
| 510 |
|
|
fwd_valid <= fwd_valid;
|
| 511 |
|
|
bwd_src_frame <= bwd_src_frame;
|
| 512 |
|
|
bwd_src_field <= bwd_src_field;
|
| 513 |
|
|
bwd_mv_x <= bwd_mv_x;
|
| 514 |
|
|
bwd_mv_y <= bwd_mv_y;
|
| 515 |
|
|
bwd_valid <= bwd_valid;
|
| 516 |
|
|
recon_dst_frame <= recon_dst_frame;
|
| 517 |
|
|
recon_dst_field <= recon_dst_field;
|
| 518 |
|
|
recon_delta_x <= recon_delta_x;
|
| 519 |
|
|
recon_delta_y <= recon_delta_y;
|
| 520 |
|
|
recon_valid <= recon_valid;
|
| 521 |
|
|
write_recon <= write_recon;
|
| 522 |
|
|
dct_block_cmd <= dct_block_cmd;
|
| 523 |
|
|
dct_block_en <= dct_block_en;
|
| 524 |
|
|
`ifdef DEBUG
|
| 525 |
|
|
mc_descript <= mc_descript;
|
| 526 |
|
|
`endif
|
| 527 |
|
|
end
|
| 528 |
|
|
|
| 529 |
|
|
`ifdef DEBUG
|
| 530 |
|
|
always @(posedge clk)
|
| 531 |
|
|
if (clk_en && motvec_update && (comp == COMP_Y) && (block == 0 ) && (row == 0) && (column == 1))
|
| 532 |
|
|
begin
|
| 533 |
|
|
if (picture_structure == FRAME_PICTURE)
|
| 534 |
|
|
begin
|
| 535 |
|
|
if(fwd_valid && bwd_valid)
|
| 536 |
|
|
$display("%m\t macroblock_address %4d %8s fwd (%5d, %5d) bwd (%5d, %5d)",
|
| 537 |
|
|
macroblock_address_in, mc_descript, fwd_mv_x, fwd_mv_y, bwd_mv_x, bwd_mv_y);
|
| 538 |
|
|
else if (fwd_valid && ~bwd_valid)
|
| 539 |
|
|
$display("%m\t macroblock_address %4d %8s fwd (%5d, %5d)",
|
| 540 |
|
|
macroblock_address_in, mc_descript, fwd_mv_x, fwd_mv_y);
|
| 541 |
|
|
else if (~fwd_valid && bwd_valid)
|
| 542 |
|
|
$display("%m\t macroblock_address %4d %8s bwd (%5d, %5d)",
|
| 543 |
|
|
macroblock_address_in, mc_descript, bwd_mv_x, bwd_mv_y);
|
| 544 |
|
|
else
|
| 545 |
|
|
$display("%m\t macroblock_address %4d %8s intra",
|
| 546 |
|
|
macroblock_address_in, mc_descript);
|
| 547 |
|
|
end
|
| 548 |
|
|
else
|
| 549 |
|
|
begin
|
| 550 |
|
|
if(fwd_valid && bwd_valid)
|
| 551 |
|
|
$display("%m\t macroblock_address %4d field %d %8s fwd field %d (%5d, %5d) bwd field %d (%5d, %5d)",
|
| 552 |
|
|
macroblock_address_in, recon_dst_field, mc_descript, fwd_src_field, fwd_mv_x, fwd_mv_y, bwd_src_field, bwd_mv_x, bwd_mv_y);
|
| 553 |
|
|
else if (fwd_valid && ~bwd_valid)
|
| 554 |
|
|
$display("%m\t macroblock_address %4d field %d %8s fwd field %d (%5d, %5d)",
|
| 555 |
|
|
macroblock_address_in, recon_dst_field, mc_descript, fwd_src_field, fwd_mv_x, fwd_mv_y);
|
| 556 |
|
|
else if (~fwd_valid && bwd_valid)
|
| 557 |
|
|
$display("%m\t macroblock_address %4d field %d %8s bwd field %d (%5d, %5d)",
|
| 558 |
|
|
macroblock_address_in, recon_dst_field, mc_descript, bwd_src_field, bwd_mv_x, bwd_mv_y);
|
| 559 |
|
|
else
|
| 560 |
|
|
$display("%m\t macroblock_address %4d field %d %8s intra",
|
| 561 |
|
|
macroblock_address_in, recon_dst_field, mc_descript);
|
| 562 |
|
|
end
|
| 563 |
|
|
end
|
| 564 |
|
|
`endif
|
| 565 |
|
|
|
| 566 |
|
|
`ifdef DEBUG_MOTVEC
|
| 567 |
|
|
always @(posedge clk)
|
| 568 |
|
|
if (clk_en)
|
| 569 |
|
|
begin
|
| 570 |
|
|
$strobe("%m\t motvec_update: %d macroblock_address_in: %d comp: %d block: %d row: %d column: %d",
|
| 571 |
|
|
motvec_update, macroblock_address_in, comp, block, row, column);
|
| 572 |
|
|
$strobe("%m\t current_field: %d frame_picture: %d field_in_frame: %d delta_x: %d delta_y: %d",
|
| 573 |
|
|
current_field, frame_picture, field_in_frame, delta_x, delta_y);
|
| 574 |
|
|
$strobe("%m\t fwd_src_frame: %d fwd_src_field: %d fwd_mv_x: %d fwd_mv_y: %d fwd_valid: %d",
|
| 575 |
|
|
fwd_src_frame, fwd_src_field, fwd_mv_x, fwd_mv_y, fwd_valid);
|
| 576 |
|
|
$strobe("%m\t bwd_src_frame: %d bwd_src_field: %d bwd_mv_x: %d bwd_mv_y: %d bwd_valid: %d",
|
| 577 |
|
|
bwd_src_frame, bwd_src_field, bwd_mv_x, bwd_mv_y, bwd_valid);
|
| 578 |
|
|
$strobe("%m\t recon_dst_frame: %d recon_dst_field: %d recon_delta_x: %d recon_delta_y: %d fwd_valid: %d bwd_valid: %d recon_valid: %d write_recon: %d",
|
| 579 |
|
|
recon_dst_frame, recon_dst_field, recon_delta_x, recon_delta_y, fwd_valid, bwd_valid, recon_valid, write_recon);
|
| 580 |
|
|
$strobe("%m\t dct_block_cmd: %d dct_block_en: %d",
|
| 581 |
|
|
dct_block_cmd, dct_block_en);
|
| 582 |
|
|
end
|
| 583 |
|
|
`endif
|
| 584 |
|
|
|
| 585 |
|
|
endmodule
|
| 586 |
|
|
/* not truncated */
|
