filter realize mpg4, h263, h264, divx and other format decoder, use the compilation of the kernel, you may read up a little trouble, but the filter used is a standard part of the c++ can combine these to understand

Packet : 93317428mp4_decode_filter.rar filelist
src\bitstream\bitstream.c
src\bitstream\bitstream.h
src\bitstream\cbp.c
src\bitstream\cbp.h
src\bitstream\mbcoding.c
src\bitstream\mbcoding.h
src\bitstream\vlc_codes.h
src\bitstream\x86_asm\cbp_3dne.asm
src\bitstream\x86_asm\cbp_mmx.asm
src\bitstream\x86_asm\cbp_sse2.asm
src\bitstream\zigzag.h
src\dct\fdct.c
src\dct\fdct.h
src\dct\ia64_asm\fdct_ia64.s
src\dct\ia64_asm\genidct.py
src\dct\ia64_asm\idct_fini.s
src\dct\ia64_asm\idct_ia64_ecc.s
src\dct\ia64_asm\idct_ia64_gcc.s
src\dct\ia64_asm\idct_init.s
src\dct\idct.c
src\dct\idct.h
src\dct\ppc_asm\idct_altivec.c
src\dct\README.IJG
src\dct\simple_idct.c
src\dct\x86_64_asm\fdct_mmx_skal.asm
src\dct\x86_64_asm\idct_mmx.asm
src\dct\x86_asm\fdct_mmx_ffmpeg.asm
src\dct\x86_asm\fdct_mmx_skal.asm
src\dct\x86_asm\fdct_sse2_skal.asm
src\dct\x86_asm\idct_3dne.asm
src\dct\x86_asm\idct_mmx.asm
src\dct\x86_asm\idct_sse2_dmitry.asm
src\dct\x86_asm\simple_idct_mmx.asm
src\decoder.c
src\decoder.h
src\encoder.c
src\encoder.h
src\global.h
src\image\colorspace.c
src\image\colorspace.h
src\image\font.c
src\image\font.h
src\image\ia64_asm\interpolate8x8_ia64.s
src\image\ia64_asm\interpolate8x8_ia64_exact.s
src\image\ia64_asm\README
src\image\image.c
src\image\image.h
src\image\interpolate8x8.c
src\image\interpolate8x8.h
src\image\postprocessing.c
src\image\postprocessing.h
src\image\ppc_asm\colorspace_altivec.c
src\image\ppc_asm\interpolate8x8_altivec.c
src\image\ppc_asm\qpel_altivec.c
src\image\qpel.c
src\image\qpel.h
src\image\reduced.c
src\image\reduced.h
src\image\x86_64_asm\interpolate8x8_mmx.asm
src\image\x86_64_asm\interpolate8x8_xmm.asm
src\image\x86_64_asm\qpel_mmx.asm
src\image\x86_asm\colorspace_mmx.inc
src\image\x86_asm\colorspace_rgb_mmx.asm
src\image\x86_asm\colorspace_yuv_mmx.asm
src\image\x86_asm\colorspace_yuyv_mmx.asm
src\image\x86_asm\interpolate8x8_3dn.asm
src\image\x86_asm\interpolate8x8_3dne.asm
src\image\x86_asm\interpolate8x8_mmx.asm
src\image\x86_asm\interpolate8x8_xmm.asm
src\image\x86_asm\postprocessing_mmx.asm
src\image\x86_asm\postprocessing_sse2.asm
src\image\x86_asm\qpel_mmx.asm
src\image\x86_asm\reduced_mmx.asm
src\motion\estimation.h
src\motion\estimation_bvop.c
src\motion\estimation_common.c
src\motion\estimation_gmc.c
src\motion\estimation_pvop.c
src\motion\estimation_rd_based.c
src\motion\estimation_rd_based_bvop.c
src\motion\gmc.c
src\motion\gmc.h
src\motion\ia64_asm\calc_delta_1.s
src\motion\ia64_asm\calc_delta_2.s
src\motion\ia64_asm\calc_delta_3.s
src\motion\ia64_asm\halfpel8_refine_ia64.s
src\motion\ia64_asm\sad_ia64.s
src\motion\motion.h
src\motion\motion_comp.c
src\motion\motion_inlines.h
src\motion\ppc_asm\sad_altivec.c
src\motion\sad.c
src\motion\sad.h
src\motion\vop_type_decision.c
src\motion\x86_64_asm\sad_mmx.asm
src\motion\x86_64_asm\sad_xmm.asm
src\motion\x86_asm\sad_3dn.asm
src\motion\x86_asm\sad_3dne.asm
src\motion\x86_asm\sad_mmx.asm
src\motion\x86_asm\sad_sse2.asm
src\motion\x86_asm\sad_xmm.asm
src\plugins\plugin_2pass1.c
src\plugins\plugin_2pass2.c
src\plugins\plugin_dump.c
src\plugins\plugin_fixed.c
src\plugins\plugin_lumimasking.c
src\plugins\plugin_psnr.c
src\plugins\plugin_single.c
src\portab.h
src\prediction\mbprediction.c
src\prediction\mbprediction.h
src\quant\ia64_asm\quant_h263_ia64.s
src\quant\ppc_asm\quant_h263_altivec.c
src\quant\ppc_asm\quant_mpeg_altivec.c
src\quant\quant.h
src\quant\quant_h263.c
src\quant\quant_matrix.c
src\quant\quant_matrix.h
src\quant\quant_mpeg.c
src\quant\x86_64_asm\quantize_h263_mmx.asm
src\quant\x86_64_asm\quantize_mpeg_xmm.asm
src\quant\x86_asm\quantize_h263_3dne.asm
src\quant\x86_asm\quantize_h263_mmx.asm
src\quant\x86_asm\quantize_mpeg_mmx.asm
src\quant\x86_asm\quantize_mpeg_xmm.asm
src\utils\emms.c
src\utils\emms.h
src\utils\ia64_asm\mem_transfer_ia64.s
src\utils\mbfunctions.h
src\utils\mbtransquant.c
src\utils\mem_align.c
src\utils\mem_align.h
src\utils\mem_transfer.c
src\utils\mem_transfer.h
src\utils\ppc_asm\altivec_trigger.c
src\utils\ppc_asm\mem_transfer_altivec.c
src\utils\timer.c
src\utils\timer.h
src\utils\x86_64_asm\cpuid.asm
src\utils\x86_64_asm\interlacing_mmx.asm
src\utils\x86_64_asm\mem_transfer_mmx.asm
src\utils\x86_asm\cpuid.asm
src\utils\x86_asm\interlacing_mmx.asm
src\utils\x86_asm\mem_transfer_3dne.asm
src\utils\x86_asm\mem_transfer_mmx.asm
src\xvid.c
src\xvid.h
dshow(MP4解码器)\authors.txt
dshow(MP4解码器)\dshow.dsp
dshow(MP4解码器)\dshow.dsw
dshow(MP4解码器)\dshow.ncb
dshow(MP4解码器)\dshow.opt
dshow(MP4解码器)\dshow.plg
dshow(MP4解码器)\dxpatch\dx90sdk-update-gcc.patch
dshow(MP4解码器)\dxpatch\dx90sdk-update-gcc.txt
dshow(MP4解码器)\Makefile
dshow(MP4解码器)\sources.inc
dshow(MP4解码器)\src\CAbout.cpp
dshow(MP4解码器)\src\CAbout.h
dshow(MP4解码器)\src\config.c
dshow(MP4解码器)\src\config.h
dshow(MP4解码器)\src\Configure.cpp
dshow(MP4解码器)\src\CXvidDecoder.cpp
dshow(MP4解码器)\src\CXvidDecoder.h
dshow(MP4解码器)\src\debug.h
dshow(MP4解码器)\src\IXvidDecoder.h
dshow(MP4解码器)\src\resource.h
dshow(MP4解码器)\src\xvid.ax.aps
dshow(MP4解码器)\src\xvid.ax.def
dshow(MP4解码器)\src\xvid.ax.rc
dshow(MP4解码器)\src\XviD_logo.bmp
src\bitstream\x86_asm
src\dct\ia64_asm
src\dct\ppc_asm
src\dct\x86_64_asm
src\dct\x86_asm
src\image\ia64_asm
src\image\ppc_asm
src\image\x86_64_asm
src\image\x86_asm
src\motion\ia64_asm
src\motion\ppc_asm
src\motion\x86_64_asm
src\motion\x86_asm
src\quant\ia64_asm
src\quant\ppc_asm
src\quant\x86_64_asm
src\quant\x86_asm
src\utils\ia64_asm
src\utils\ppc_asm
src\utils\x86_64_asm
src\utils\x86_asm
src\bitstream
src\dct
src\image
src\motion
src\plugins
src\prediction
src\quant
src\utils
dshow(MP4解码器)\Debug
dshow(MP4解码器)\dxpatch
dshow(MP4解码器)\src
src
dshow(MP4解码器)

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