/*****************************************************************************
* quant.c: h264 encoder library
*****************************************************************************
- * Copyright (C) 2005 x264 project
+ * Copyright (C) 2005-2008 x264 project
*
- * Authors: Christian Heine <sennindemokrit@gmx.net>
+ * Authors: Loren Merritt <lorenm@u.washington.edu>
+ * Christian Heine <sennindemokrit@gmx.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
*****************************************************************************/
#include "common.h"
(coef) = (f + (coef)) * (mf) >> 16; \
else \
(coef) = - ((f - (coef)) * (mf) >> 16); \
+ nz |= (coef); \
}
-static void quant_8x8( int16_t dct[8][8], uint16_t mf[64], uint16_t bias[64] )
+static int quant_8x8( int16_t dct[8][8], uint16_t mf[64], uint16_t bias[64] )
{
- int i;
+ int i, nz = 0;
for( i = 0; i < 64; i++ )
QUANT_ONE( dct[0][i], mf[i], bias[i] );
+ return !!nz;
}
-static void quant_4x4( int16_t dct[4][4], uint16_t mf[16], uint16_t bias[16] )
+static int quant_4x4( int16_t dct[4][4], uint16_t mf[16], uint16_t bias[16] )
{
- int i;
+ int i, nz = 0;
for( i = 0; i < 16; i++ )
QUANT_ONE( dct[0][i], mf[i], bias[i] );
+ return !!nz;
}
-static void quant_4x4_dc( int16_t dct[4][4], int mf, int bias )
+static int quant_4x4_dc( int16_t dct[4][4], int mf, int bias )
{
- int i;
+ int i, nz = 0;
for( i = 0; i < 16; i++ )
QUANT_ONE( dct[0][i], mf, bias );
+ return !!nz;
}
-static void quant_2x2_dc( int16_t dct[2][2], int mf, int bias )
+static int quant_2x2_dc( int16_t dct[2][2], int mf, int bias )
{
+ int nz = 0;
QUANT_ONE( dct[0][0], mf, bias );
QUANT_ONE( dct[0][1], mf, bias );
QUANT_ONE( dct[0][2], mf, bias );
QUANT_ONE( dct[0][3], mf, bias );
+ return !!nz;
}
#define DEQUANT_SHL( x ) \
}
}
-void x264_mb_dequant_2x2_dc( int16_t dct[2][2], int dequant_mf[6][4][4], int i_qp )
-{
- const int i_qbits = i_qp/6 - 5;
-
- if( i_qbits >= 0 )
- {
- const int i_dmf = dequant_mf[i_qp%6][0][0] << i_qbits;
- dct[0][0] *= i_dmf;
- dct[0][1] *= i_dmf;
- dct[1][0] *= i_dmf;
- dct[1][1] *= i_dmf;
- }
- else
- {
- const int i_dmf = dequant_mf[i_qp%6][0][0];
- // chroma DC is truncated, not rounded
- dct[0][0] = ( dct[0][0] * i_dmf ) >> (-i_qbits);
- dct[0][1] = ( dct[0][1] * i_dmf ) >> (-i_qbits);
- dct[1][0] = ( dct[1][0] * i_dmf ) >> (-i_qbits);
- dct[1][1] = ( dct[1][1] * i_dmf ) >> (-i_qbits);
- }
-}
-
-void x264_mb_dequant_4x4_dc( int16_t dct[4][4], int dequant_mf[6][4][4], int i_qp )
+static void dequant_4x4_dc( int16_t dct[4][4], int dequant_mf[6][4][4], int i_qp )
{
const int i_qbits = i_qp/6 - 6;
int y;
}
}
+static void x264_denoise_dct( int16_t *dct, uint32_t *sum, uint16_t *offset, int size )
+{
+ int i;
+ for( i=1; i<size; i++ )
+ {
+ int level = dct[i];
+ int sign = level>>15;
+ level = (level+sign)^sign;
+ sum[i] += level;
+ level -= offset[i];
+ dct[i] = level<0 ? 0 : (level^sign)-sign;
+ }
+}
+
+/* (ref: JVT-B118)
+ * x264_mb_decimate_score: given dct coeffs it returns a score to see if we could empty this dct coeffs
+ * to 0 (low score means set it to null)
+ * Used in inter macroblock (luma and chroma)
+ * luma: for a 8x8 block: if score < 4 -> null
+ * for the complete mb: if score < 6 -> null
+ * chroma: for the complete mb: if score < 7 -> null
+ */
+
+const uint8_t x264_decimate_table4[16] = {
+ 3,2,2,1,1,1,0,0,0,0,0,0,0,0,0,0 };
+const uint8_t x264_decimate_table8[64] = {
+ 3,3,3,3,2,2,2,2,2,2,2,2,1,1,1,1,
+ 1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 };
+
+static int ALWAYS_INLINE x264_decimate_score_internal( int16_t *dct, int i_max )
+{
+ const uint8_t *ds_table = (i_max == 64) ? x264_decimate_table8 : x264_decimate_table4;
+ int i_score = 0;
+ int idx = i_max - 1;
+
+ /* Yes, dct[idx-1] is guaranteed to be 32-bit aligned. idx>=0 instead of 1 works correctly for the same reason */
+ while( idx >= 0 && *(uint32_t*)&dct[idx-1] == 0 )
+ idx -= 2;
+ if( idx >= 0 && dct[idx] == 0 )
+ idx--;
+ while( idx >= 0 )
+ {
+ int i_run;
+
+ if( (unsigned)(dct[idx--] + 1) > 2 )
+ return 9;
+
+ i_run = 0;
+ while( idx >= 0 && dct[idx] == 0 )
+ {
+ idx--;
+ i_run++;
+ }
+ i_score += ds_table[i_run];
+ }
+
+ return i_score;
+}
+
+static int x264_decimate_score15( int16_t *dct )
+{
+ return x264_decimate_score_internal( dct+1, 15 );
+}
+static int x264_decimate_score16( int16_t *dct )
+{
+ return x264_decimate_score_internal( dct, 16 );
+}
+static int x264_decimate_score64( int16_t *dct )
+{
+ return x264_decimate_score_internal( dct, 64 );
+}
+
+static int ALWAYS_INLINE x264_coeff_last_internal( int16_t *l, int i_count )
+{
+ int i_last;
+ for( i_last = i_count-1; i_last >= 3; i_last -= 4 )
+ if( *(uint64_t*)(l+i_last-3) )
+ break;
+ while( i_last >= 0 && l[i_last] == 0 )
+ i_last--;
+ return i_last;
+}
+
+static int x264_coeff_last4( int16_t *l )
+{
+ return x264_coeff_last_internal( l, 4 );
+}
+static int x264_coeff_last15( int16_t *l )
+{
+ return x264_coeff_last_internal( l, 15 );
+}
+static int x264_coeff_last16( int16_t *l )
+{
+ return x264_coeff_last_internal( l, 16 );
+}
+static int x264_coeff_last64( int16_t *l )
+{
+ return x264_coeff_last_internal( l, 64 );
+}
+
+#define level_run(num)\
+static int x264_coeff_level_run##num( int16_t *dct, x264_run_level_t *runlevel )\
+{\
+ int i_last = runlevel->last = x264_coeff_last##num(dct);\
+ int i_total = 0;\
+ do\
+ {\
+ int r = 0;\
+ runlevel->level[i_total] = dct[i_last];\
+ while( --i_last >= 0 && dct[i_last] == 0 )\
+ r++;\
+ runlevel->run[i_total++] = r;\
+ } while( i_last >= 0 );\
+ return i_total;\
+}
+
+level_run(4)
+level_run(15)
+level_run(16)
+
+
void x264_quant_init( x264_t *h, int cpu, x264_quant_function_t *pf )
{
pf->quant_8x8 = quant_8x8;
pf->quant_2x2_dc = quant_2x2_dc;
pf->dequant_4x4 = dequant_4x4;
+ pf->dequant_4x4_dc = dequant_4x4_dc;
pf->dequant_8x8 = dequant_8x8;
+ pf->denoise_dct = x264_denoise_dct;
+ pf->decimate_score15 = x264_decimate_score15;
+ pf->decimate_score16 = x264_decimate_score16;
+ pf->decimate_score64 = x264_decimate_score64;
+
+ pf->coeff_last[DCT_CHROMA_DC] = x264_coeff_last4;
+ pf->coeff_last[ DCT_LUMA_AC] = x264_coeff_last15;
+ pf->coeff_last[ DCT_LUMA_4x4] = x264_coeff_last16;
+ pf->coeff_last[ DCT_LUMA_8x8] = x264_coeff_last64;
+ pf->coeff_level_run[DCT_CHROMA_DC] = x264_coeff_level_run4;
+ pf->coeff_level_run[ DCT_LUMA_AC] = x264_coeff_level_run15;
+ pf->coeff_level_run[ DCT_LUMA_4x4] = x264_coeff_level_run16;
+
#ifdef HAVE_MMX
if( cpu&X264_CPU_MMX )
{
#ifdef ARCH_X86
pf->quant_4x4 = x264_quant_4x4_mmx;
pf->quant_8x8 = x264_quant_8x8_mmx;
-#endif
pf->dequant_4x4 = x264_dequant_4x4_mmx;
+ pf->dequant_4x4_dc = x264_dequant_4x4dc_mmxext;
pf->dequant_8x8 = x264_dequant_8x8_mmx;
+ if( h->param.i_cqm_preset == X264_CQM_FLAT )
+ {
+ pf->dequant_4x4 = x264_dequant_4x4_flat16_mmx;
+ pf->dequant_8x8 = x264_dequant_8x8_flat16_mmx;
+ }
+ pf->denoise_dct = x264_denoise_dct_mmx;
+#endif
}
if( cpu&X264_CPU_MMXEXT )
pf->quant_2x2_dc = x264_quant_2x2_dc_mmxext;
#ifdef ARCH_X86
pf->quant_4x4_dc = x264_quant_4x4_dc_mmxext;
+ pf->decimate_score15 = x264_decimate_score15_mmxext;
+ pf->decimate_score16 = x264_decimate_score16_mmxext;
+ pf->decimate_score64 = x264_decimate_score64_mmxext;
+ pf->coeff_last[ DCT_LUMA_AC] = x264_coeff_last15_mmxext;
+ pf->coeff_last[ DCT_LUMA_4x4] = x264_coeff_last16_mmxext;
+ pf->coeff_last[ DCT_LUMA_8x8] = x264_coeff_last64_mmxext;
+ pf->coeff_level_run[ DCT_LUMA_AC] = x264_coeff_level_run15_mmxext;
+ pf->coeff_level_run[ DCT_LUMA_4x4] = x264_coeff_level_run16_mmxext;
#endif
+ pf->coeff_last[DCT_CHROMA_DC] = x264_coeff_last4_mmxext;
+ pf->coeff_level_run[DCT_CHROMA_DC] = x264_coeff_level_run4_mmxext;
+ if( cpu&X264_CPU_LZCNT )
+ {
+ pf->coeff_last[DCT_CHROMA_DC] = x264_coeff_last4_mmxext_lzcnt;
+ pf->coeff_level_run[DCT_CHROMA_DC] = x264_coeff_level_run4_mmxext_lzcnt;
+ }
}
if( cpu&X264_CPU_SSE2 )
pf->quant_4x4_dc = x264_quant_4x4_dc_sse2;
pf->quant_4x4 = x264_quant_4x4_sse2;
pf->quant_8x8 = x264_quant_8x8_sse2;
+ pf->dequant_4x4 = x264_dequant_4x4_sse2;
+ pf->dequant_4x4_dc = x264_dequant_4x4dc_sse2;
+ pf->dequant_8x8 = x264_dequant_8x8_sse2;
+ if( h->param.i_cqm_preset == X264_CQM_FLAT )
+ {
+ pf->dequant_4x4 = x264_dequant_4x4_flat16_sse2;
+ pf->dequant_8x8 = x264_dequant_8x8_flat16_sse2;
+ }
+ pf->denoise_dct = x264_denoise_dct_sse2;
+ pf->decimate_score15 = x264_decimate_score15_sse2;
+ pf->decimate_score16 = x264_decimate_score16_sse2;
+ pf->decimate_score64 = x264_decimate_score64_sse2;
+ pf->coeff_last[ DCT_LUMA_AC] = x264_coeff_last15_sse2;
+ pf->coeff_last[DCT_LUMA_4x4] = x264_coeff_last16_sse2;
+ pf->coeff_last[DCT_LUMA_8x8] = x264_coeff_last64_sse2;
+ pf->coeff_level_run[ DCT_LUMA_AC] = x264_coeff_level_run15_sse2;
+ pf->coeff_level_run[DCT_LUMA_4x4] = x264_coeff_level_run16_sse2;
+ if( cpu&X264_CPU_LZCNT )
+ {
+ pf->coeff_last[ DCT_LUMA_AC] = x264_coeff_last15_sse2_lzcnt;
+ pf->coeff_last[DCT_LUMA_4x4] = x264_coeff_last16_sse2_lzcnt;
+ pf->coeff_last[DCT_LUMA_8x8] = x264_coeff_last64_sse2_lzcnt;
+ pf->coeff_level_run[ DCT_LUMA_AC] = x264_coeff_level_run15_sse2_lzcnt;
+ pf->coeff_level_run[DCT_LUMA_4x4] = x264_coeff_level_run16_sse2_lzcnt;
+ }
}
-#endif
-#ifdef HAVE_SSE3
if( cpu&X264_CPU_SSSE3 )
{
+ pf->quant_2x2_dc = x264_quant_2x2_dc_ssse3;
pf->quant_4x4_dc = x264_quant_4x4_dc_ssse3;
pf->quant_4x4 = x264_quant_4x4_ssse3;
pf->quant_8x8 = x264_quant_8x8_ssse3;
+ pf->denoise_dct = x264_denoise_dct_ssse3;
+ pf->decimate_score15 = x264_decimate_score15_ssse3;
+ pf->decimate_score16 = x264_decimate_score16_ssse3;
+ pf->decimate_score64 = x264_decimate_score64_ssse3;
}
-#endif
+
+ if( cpu&X264_CPU_SSE4 )
+ {
+ pf->quant_4x4_dc = x264_quant_4x4_dc_sse4;
+ pf->quant_4x4 = x264_quant_4x4_sse4;
+ pf->quant_8x8 = x264_quant_8x8_sse4;
+ }
+#endif // HAVE_MMX
#ifdef ARCH_PPC
if( cpu&X264_CPU_ALTIVEC ) {
pf->dequant_8x8 = x264_dequant_8x8_altivec;
}
#endif
+ pf->coeff_last[ DCT_LUMA_DC] = pf->coeff_last[DCT_LUMA_4x4];
+ pf->coeff_last[DCT_CHROMA_AC] = pf->coeff_last[ DCT_LUMA_AC];
+ pf->coeff_level_run[ DCT_LUMA_DC] = pf->coeff_level_run[DCT_LUMA_4x4];
+ pf->coeff_level_run[DCT_CHROMA_AC] = pf->coeff_level_run[ DCT_LUMA_AC];
}
projects / x264 / blobdiff