summaryrefslogtreecommitdiffstats
path: root/media/libtheora/lib/x86_vc/mmxstate.c
diff options
context:
space:
mode:
Diffstat (limited to 'media/libtheora/lib/x86_vc/mmxstate.c')
-rw-r--r--media/libtheora/lib/x86_vc/mmxstate.c176
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 0000000000..f532ee1b6f
--- /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: $Id$
+
+ ********************************************************************/
+
+/*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