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renamed - use of s->dct_unquantize function pointer - SHOULD add faster h263 mmx specific unquantization stuff
Originally committed as revision 23 to svn://svn.ffmpeg.org/ffmpeg/trunk
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@ -19,6 +19,14 @@
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* Optimized for ia32 cpus by Nick Kurshev <nickols_k@mail.ru>
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*/
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#include "../dsputil.h"
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#include "../mpegvideo.h"
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#if 0
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/* XXX: GL: I don't understand why this function needs optimization
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(it is called only once per frame!), so I disabled it */
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void MPV_frame_start(MpegEncContext *s)
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{
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if (s->pict_type == B_TYPE) {
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@ -52,10 +60,8 @@ void MPV_frame_start(MpegEncContext *s)
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:"eax","edx","ecx","memory");
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}
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}
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#endif
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static void dct_unquantize(MpegEncContext *s, DCTELEM *block, int n, int qscale);
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#ifdef HAVE_MMX
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static const unsigned long long int mm_wabs __attribute__ ((aligned(8))) = 0xffffffffffffffffULL;
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static const unsigned long long int mm_wone __attribute__ ((aligned(8))) = 0x0001000100010001ULL;
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@ -88,13 +94,8 @@ static const unsigned long long int mm_wone __attribute__ ((aligned(8))) = 0x000
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high3:low3 = low1*low2
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high3 += tlow1
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*/
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#ifdef BIN_PORTABILITY
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static void dct_unquantize_mmx
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#else
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#define HAVE_DCT_UNQUANTIZE 1
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static void dct_unquantize
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#endif
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(MpegEncContext *s,DCTELEM *block, int n, int qscale)
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static void dct_unquantize_mpeg1_mmx(MpegEncContext *s,
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DCTELEM *block, int n, int qscale)
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{
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int i, level;
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const UINT16 *quant_matrix;
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@ -216,24 +217,11 @@ static void dct_unquantize
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}
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}
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#ifdef BIN_PORTABILITY
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static void (*dct_unquantize_ptr)(MpegEncContext *s,
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DCTELEM *block, int n, int qscale);
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void MPV_common_init_mmx(void)
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void MPV_common_init_mmx(MpegEncContext *s)
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{
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int mm_flags;
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mm_flags = mm_support();
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if (mm_flags & MM_MMX) {
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dct_unquantize_ptr = dct_unquantize_mmx;
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}
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else {
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dct_unquantize_ptr = dct_unquantize;
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}
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if (mm_flags & MM_MMX) {
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/* XXX: should include h263 optimization too. It would go even
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faster! */
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s->dct_unquantize = dct_unquantize_mpeg1_mmx;
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}
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}
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#define DCT_UNQUANTIZE(a,b,c,d) (*dct_unquantize_ptr)(a,b,c,d)
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#else
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#define DCT_UNQUANTIZE(a,b,c,d) dct_unquantize(a,b,c,d)
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#endif /* BIN_PORTABILITY */
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#endif /* HAVE_MMX */
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