diff options
Diffstat (limited to 'media/libtheora/lib/x86_vc/mmxstate.c')
| -rw-r--r-- | media/libtheora/lib/x86_vc/mmxstate.c | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/media/libtheora/lib/x86_vc/mmxstate.c b/media/libtheora/lib/x86_vc/mmxstate.c new file mode 100644 index 000000000..d3d468d5f --- /dev/null +++ b/media/libtheora/lib/x86_vc/mmxstate.c @@ -0,0 +1,176 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 * + * by the Xiph.Org Foundation and contributors http://www.xiph.org/ * + * * + ******************************************************************** + + function: + last mod: $Id: mmxstate.c 17563 2010-10-25 17:40:54Z tterribe $ + + ********************************************************************/ + +/*MMX acceleration of complete fragment reconstruction algorithm. + Originally written by Rudolf Marek.*/ +#include <string.h> +#include "x86int.h" +#include "mmxloop.h" + +#if defined(OC_X86_ASM) + +void oc_state_frag_recon_mmx(const oc_theora_state *_state,ptrdiff_t _fragi, + int _pli,ogg_int16_t _dct_coeffs[128],int _last_zzi,ogg_uint16_t _dc_quant){ + unsigned char *dst; + ptrdiff_t frag_buf_off; + int ystride; + int refi; + /*Apply the inverse transform.*/ + /*Special case only having a DC component.*/ + if(_last_zzi<2){ + /*Note that this value must be unsigned, to keep the __asm__ block from + sign-extending it when it puts it in a register.*/ + ogg_uint16_t p; + /*We round this dequant product (and not any of the others) because there's + no iDCT rounding.*/ + p=(ogg_int16_t)(_dct_coeffs[0]*(ogg_int32_t)_dc_quant+15>>5); + /*Fill _dct_coeffs with p.*/ + __asm{ +#define Y eax +#define P ecx + mov Y,_dct_coeffs + movzx P,p + lea Y,[Y+128] + /*mm0=0000 0000 0000 AAAA*/ + movd mm0,P + /*mm0=0000 0000 AAAA AAAA*/ + punpcklwd mm0,mm0 + /*mm0=AAAA AAAA AAAA AAAA*/ + punpckldq mm0,mm0 + movq [Y],mm0 + movq [8+Y],mm0 + movq [16+Y],mm0 + movq [24+Y],mm0 + movq [32+Y],mm0 + movq [40+Y],mm0 + movq [48+Y],mm0 + movq [56+Y],mm0 + movq [64+Y],mm0 + movq [72+Y],mm0 + movq [80+Y],mm0 + movq [88+Y],mm0 + movq [96+Y],mm0 + movq [104+Y],mm0 + movq [112+Y],mm0 + movq [120+Y],mm0 +#undef Y +#undef P + } + } + else{ + /*Dequantize the DC coefficient.*/ + _dct_coeffs[0]=(ogg_int16_t)(_dct_coeffs[0]*(int)_dc_quant); + oc_idct8x8_mmx(_dct_coeffs+64,_dct_coeffs,_last_zzi); + } + /*Fill in the target buffer.*/ + frag_buf_off=_state->frag_buf_offs[_fragi]; + refi=_state->frags[_fragi].refi; + ystride=_state->ref_ystride[_pli]; + dst=_state->ref_frame_data[OC_FRAME_SELF]+frag_buf_off; + if(refi==OC_FRAME_SELF)oc_frag_recon_intra_mmx(dst,ystride,_dct_coeffs+64); + else{ + const unsigned char *ref; + int mvoffsets[2]; + ref=_state->ref_frame_data[refi]+frag_buf_off; + if(oc_state_get_mv_offsets(_state,mvoffsets,_pli, + _state->frag_mvs[_fragi])>1){ + oc_frag_recon_inter2_mmx(dst,ref+mvoffsets[0],ref+mvoffsets[1],ystride, + _dct_coeffs+64); + } + else oc_frag_recon_inter_mmx(dst,ref+mvoffsets[0],ystride,_dct_coeffs+64); + } +} + +/*We copy these entire function to inline the actual MMX routines so that we + use only a single indirect call.*/ + +void oc_loop_filter_init_mmx(signed char _bv[256],int _flimit){ + memset(_bv,~(_flimit<<1),8); +} + +/*Apply the loop filter to a given set of fragment rows in the given plane. + The filter may be run on the bottom edge, affecting pixels in the next row of + fragments, so this row also needs to be available. + _bv: The bounding values array. + _refi: The index of the frame buffer to filter. + _pli: The color plane to filter. + _fragy0: The Y coordinate of the first fragment row to filter. + _fragy_end: The Y coordinate of the fragment row to stop filtering at.*/ +void oc_state_loop_filter_frag_rows_mmx(const oc_theora_state *_state, + signed char _bv[256],int _refi,int _pli,int _fragy0,int _fragy_end){ + const oc_fragment_plane *fplane; + const oc_fragment *frags; + const ptrdiff_t *frag_buf_offs; + unsigned char *ref_frame_data; + ptrdiff_t fragi_top; + ptrdiff_t fragi_bot; + ptrdiff_t fragi0; + ptrdiff_t fragi0_end; + int ystride; + int nhfrags; + fplane=_state->fplanes+_pli; + nhfrags=fplane->nhfrags; + fragi_top=fplane->froffset; + fragi_bot=fragi_top+fplane->nfrags; + fragi0=fragi_top+_fragy0*(ptrdiff_t)nhfrags; + fragi0_end=fragi_top+_fragy_end*(ptrdiff_t)nhfrags; + ystride=_state->ref_ystride[_pli]; + frags=_state->frags; + frag_buf_offs=_state->frag_buf_offs; + ref_frame_data=_state->ref_frame_data[_refi]; + /*The following loops are constructed somewhat non-intuitively on purpose. + The main idea is: if a block boundary has at least one coded fragment on + it, the filter is applied to it. + However, the order that the filters are applied in matters, and VP3 chose + the somewhat strange ordering used below.*/ + while(fragi0<fragi0_end){ + ptrdiff_t fragi; + ptrdiff_t fragi_end; + fragi=fragi0; + fragi_end=fragi+nhfrags; + while(fragi<fragi_end){ + if(frags[fragi].coded){ + unsigned char *ref; + ref=ref_frame_data+frag_buf_offs[fragi]; +#define PIX eax +#define YSTRIDE3 edi +#define YSTRIDE ecx +#define LL edx +#define D esi +#define D_WORD si + if(fragi>fragi0)OC_LOOP_FILTER_H_MMX(ref,ystride,_bv); + if(fragi0>fragi_top)OC_LOOP_FILTER_V_MMX(ref,ystride,_bv); + if(fragi+1<fragi_end&&!frags[fragi+1].coded){ + OC_LOOP_FILTER_H_MMX(ref+8,ystride,_bv); + } + if(fragi+nhfrags<fragi_bot&&!frags[fragi+nhfrags].coded){ + OC_LOOP_FILTER_V_MMX(ref+(ystride<<3),ystride,_bv); + } +#undef PIX +#undef YSTRIDE3 +#undef YSTRIDE +#undef LL +#undef D +#undef D_WORD + } + fragi++; + } + fragi0+=nhfrags; + } +} + +#endif |