2DCompsitionEngine
- 3. BB_2DHWA Feature Summary • Block Copy/Draw Operations • Rotation (90/180/270 degrees) and Mirror/Flip operations • Scaling (1/16x ~ 16x) • Color Space and format Conversion • Chroma Up/Down sampling • ROP2/3 operations • Alpha Blending/Compositing (Porter Duff Compositing) • Destination Clipping • Source Pattern Repeat
- 4. Image Attributes…. source base address SrcWidth SrcHeight (SrcXoffset, SrcYoffset) SurfWidth SurfHeight Stride_Size pattern SrcPatHeight SrcPatWidth Data Types •LUT/MONO-1/2/4/8 •YUV (420_2,422,444) •RGB (aRGB16/24,32) •Component Ordering •Pre-multiplied •Embedded Alpha DMA Attributes • Base Address • Width/Height • Stride • Offsets Operation Commands (SRC) • CSC/CHRUS • VC-remapping • Color Expand • Scaling • Rotation • Pattern RepeatOperation Commands (DST) • Blending/Compositing • ROP2/3 • Clipping • Color Fill • CSC/CHRDS
- 5. BB_2DHWA Operation Overview SRC-1 Image Data SRC-2 Image Data Alpha (Remote/Mask) Color Space Conv Color Expand Scaling Rotate SRC-dst Image Color Space Conv Color Expand Scaling Rotate SRC-dst Image Blending (Compositing) ROP-2/3 ColorFill Clipping Color Space Conv DST Image Data DST Image Data
- 6. BB_2DHWA SRC DST types Any Source data types Non-sub-byte and non-LUT Dest data types
- 7. Architecture Block Diagram bb_2dhwa bb_2dhwa_dp_core bb_2dhwa_dp_cntl L4 I/F (ocp2mmr) bb_2dhwa_vpdma uv read R-client ListMgr L3I/F bufbuf BIMCDMA ARB pmem packed data R-client SCR vbusp_m vbusp_s bb_2dhwa_dp_dst alpha 444 to 422/ 420 Color Red & Dithering C S C ROP/Blend src1src2 smem vbusp_s dst cfg alpha R-client uv read R-client uv read W-client packed data W-client cfg bb_2dhwa_dp_src ROT rmem CSC Color Exp V Scaler H Scaler SLmem SAmem cmem 420to422 YC_aligner 422to444 Lmem VC1Range bb_2dhwa_dp_src ROT rmem CSC Color Exp V Scaler H Scaler SLmem SAmem cmem 420to422 YC_aligner 422to444 Lmem VC1Range packed data R-client bb_2dhwa_clkc_int INTC vbusp_s CLK/RST L3 L4 VPDMA DP_SRC DP_SRC DP_DST DP_CORE
- 8. BB_2DHWA Architecture Block Diagram bb_2dhwa bb_2dhwa_dp_core bb_2dhwa_dp_cntl L4 I/F (ocp2mmr) bb_2dhwa_vpdma uv read R-client ListMgr L3I/F bufbuf BIMCDMA ARB pmem packed data R-client SCR vbusp_m vbusp_s bb_2dhwa_dp_dst alpha 444 to 422/ 420 Color Red & Dithering C S C ROP/Blend src1src2 smem vbusp_s dst cfg alpha R-client uv read R-client uv read W-client packed data W-client cfg bb_2dhwa_dp_src ROT rmem CSC Color Exp V Scaler H Scaler SLmem SAmem cmem 420to422 YC_aligner 422to444 Lmem VC1Range bb_2dhwa_dp_src ROT rmem CSC Color Exp V Scaler H Scaler SLmem SAmem cmem 420to422 YC_aligner 422to444 Lmem VC1Range packed data R-client bb_2dhwa_clkc_int INTC vbusp_s CLK/RST L3 L4 VPDMA DP_SRC DP_SRC DP_DST DP_CORE VPDMA FW Initialization List Start Descriptor DownLoad Descriptor Copied Client Configuration DMA Read Req Src Data Processing Dest Data Generation DMA Write Req (List) Cmd Done IRQ
- 9. BB_2DHWA External Interfaces MMR Interconnect HP Interconnect Interrupt Interconnect Clock/Reset Interconnect DFT Interconnect Memory BIST Interconnect _mmr_slv _vpdma_mst intr l3_clk/clkdiv l4_clk/clkdiv rst_main_arst_n dft gpi gpo BB_2DHWA
- 10. Core Processing Unit (dp_src) Cmem Color Exp Rotate Engine Rmem V Scaler H Scaler SLmem SAmem 422 to 444 Lmem YC_aligner 420to422 u/v y, yuv (a)rgb, bm 8 32 cmem_mux rmem_mux clut_loader argb 32 vpi_invpi_in VC-1rangemap uv_2x CSC (clut 32)
- 11. Core Processing Unit (dp_dst) dp_dst_src_gen src1_pipe_fifo src2_pipe_fifo blend_pd rop_engine alpha_pipe_fifo Color_Red csc Clip_Cntl (dst_col_fill) chr_ds vpi_out_y vpi_out_uv argb 32 argb 32 alpha-1/8/32 rgb yuv444, yuv422, y(420), mono-8 32 8 32 32 32 u/v(420)
- 12. Terminologies • Tile Mode • Vslice Mode • Chroma Expansion
- 13. Tile Mode (Rotation) 90d rotate + scale vpi i/f reverse blocked reverse raster order vpdma (src) 90d rotate with mirror-y scale to 32x32 blk vpdma (dst)
- 14. Tile Mode (Rotation Modes) scale + 90d rotate vpdma (src) 90d rotate with mirror-y scale vpdma (dst) scale + 90d rotate + mirror-y vpi i/f (to core) vpdma (dst) scale + 90d rotate + mirror-x vpdma (src) 90d rotate with mirror-y scale vpdma (src) 90d rotate with mirror-y scale vpdma (dst) vpi i/f normal blocked reverse ROW raster order scale vpdma (dst) vpdma TB-RL tile read TB-RL row ordering 90d rotate with mirror-y scale scale +270 rotate
- 15. Scan Order Determination FlowChart Any Src 90/270 Rotated? src flip/mirror? Rot_mir_ mode LtUp 90 (mode 1) 270 (mode 3) yes overlapped copy x or y axis? LtDn RtUp y-axis x-axis RtDn copy dir RtDn RtUp LtDn U | UR | UL | L D | DR | DL R UpRt (Tile) RtUp DnLt (Tile) LtDn no LtUp(Tile) LtUp 180 Rot? yes yes yes Flip (only) RtDn (Tile) RtDn 0 (mode 0) x or y axis LtDn(Tile) LtDn RtUp(Tile) RtUp no yes (modes 4 & 5) x-axisy-axis no no No 180 (mode 2) DnRt(Tile) RtDn UpLt(Tile) LtUp 90+mx (mode 6) 90+my (mode 7)
- 16. Vslice Mode YUV420 Source Data Or Any Data (scale_en) > 1020 pixels wide src2 Vslice_tar_w Src2_in_w Src1_in_w
- 17. Chroma Expansion Over-fetching extra chroma pixels and/or lines to perform proper 420422 and/or 422444 chroma upsampling across tile/vslice boundaries
- 18. Key Functional Processing Units •Scaler •Rotation Engine •Porter-Duff Compositing Engine •ROP engine
- 19. Scaler L_buf(mem) for vs or P_buf(reg) for vs x accum line buf (mem)-vs accum pix buf (reg)-hs + phase_in phase_out x scale_f in out cntl cfg rdy/req rdy/req weighted blending
- 20. Scaler (Vertical Scaler) L_buf(mem) x accum (mem) + fin fout x scale_f in Outsrc_row+1 src_row src_row frag_delta_v frag_outfrag_in frag_in_c - a b ab abs(a-b) intensity RND /SAT out_valid L_buf(mem) 1 upscaling 1 1 zero first_row_pix 0 out_valid 1 8.0 8.0 1.24 frag_out_c 5.24 8.4 12.4 12.4 12.4 5.24 8.0 5.24 8.4 8.0 5.24 Inv_Scale_f src_row inc tar_row inc a-bb-aone out_valid = (a-b)>0 or last_row_pix & (frag_∆_v < frag_∆_thresh) - x + 8.0s RND/ SAT 5.24 1.24 1.24 5.24 5.24 cmp frag_delta_thresh 0.24 scale_factor_c 5.13 1.13 5.13 5.13 9.13s RND/ SAT TRUNC TRUNC TRUNC 1 init 1 init
- 21. Rotation Engine 1 2 3 4input tile r_mem data read out rotated output tile Write in rotated order (addr + 32 pixel location) Write in un-rotated order (addr + 1 pixel location) Write in rotated order Read already rotated data (addr + 1 pixel location) Read out in rotated order (addr + 32 pixel location) 1 2 3 4input tile r_mem data read out rotated output tile Write in rotated order (addr + 32 pixel location) Write in un-rotated order (addr + 1 pixel location) Write in rotated order Read already rotated data (addr + 1 pixel location) Read out in rotated order (addr + 32 pixel location)
- 22. Porter-Duff Compositing Out = a*S + (1-a)*D Simple Blending PorterDuff_Rule Selection 0x0 : CLEAR 0x1 : SRC 0x2 : DST 0x3 : SRC_OVER 0x4 : DST_OVER 0x5 : SRC_IN 0x6 : DST_IN 0x7 : SRC_OUT 0x8 : DST_OUT 0x9 : SRC_ATOP 0xA : DST_ATOP 0xB : XOR 0xC: PLUS Porter-Duff Compositing
- 24. Porter-Duff Compositing Engine + 16 16 1 / 255 X 88 16 X 8 24 X 88 16 X 8 16 24 0 1 1 0 + 2424 24 1 / 255 1 / 255 / 816 8 0 1 Csrc Fsrc Asrc SRC1 non_PreMult SRC2 non_PreMult Cdst Fdst 2424 8 8 8 Cout Non-Pre_Mult 16 16 ((x<<8) + x + 256) >> 16 1 / 255 estimation 8 1 0 Csrc Cdst Cout_simple_src 0 1 Cout_simple_no_div 0 (pd_CLEAR) 1 (Cout_simple_no_div or Cout_simpe_p2p) 2 (dst_pre_mult) 3 (else) Pre_Mult X 88 16 (Asrc*Csrc) 0xFF Asrc_mod 0 1 src_alpha_modulated & ~cout_simple X 88 Fsrc' Pre_ModAsrc Pre_ModAdst X 88 16 (Adst*Cdst) 255 Adst_mod 0 1 X 88 Fdst' 0 1 8'h0 pd_clear dst_alpha_modulated & ~cout_simple Adst Aout selection - based on data pipeline delay 0 1 cout_simple_p2p dst=npdst=p or (Csrc*Asrc Cdst*Adst) src=np src=p Dst Non-Pre_Mult 1 / 255 1 / 255 x 255 x 255 1 0 cout_simple_src cout_simple_p2np 0 1 1 0 cout_simple_src cout_simple_p2np0 1 cout_simple_p2np 1 0 16 16 clip clip αout 8'h0 1 2 3 0
- 25. BB_2DHWA ROP