/*****************************************************************************
* 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"
#ifdef ARCH_PPC
# include "ppc/quant.h"
#endif
+#ifdef ARCH_ARM
+# include "arm/quant.h"
+#endif
#define QUANT_ONE( coef, mf, f ) \
{ \
(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( dctcoef dct[64], uint16_t mf[64], uint16_t bias[64] )
{
- int i;
- for( i = 0; i < 64; i++ )
- QUANT_ONE( dct[0][i], mf[i], bias[i] );
+ int nz = 0;
+ for( int i = 0; i < 64; i++ )
+ QUANT_ONE( dct[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( dctcoef dct[16], uint16_t mf[16], uint16_t bias[16] )
{
- int i;
- for( i = 0; i < 16; i++ )
- QUANT_ONE( dct[0][i], mf[i], bias[i] );
+ int nz = 0;
+ for( int i = 0; i < 16; i++ )
+ QUANT_ONE( dct[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( dctcoef dct[16], int mf, int bias )
{
- int i;
- for( i = 0; i < 16; i++ )
- QUANT_ONE( dct[0][i], mf, bias );
+ int nz = 0;
+ for( int i = 0; i < 16; i++ )
+ QUANT_ONE( dct[i], mf, bias );
+ return !!nz;
}
-static void quant_2x2_dc( int16_t dct[2][2], int mf, int bias )
+static int quant_2x2_dc( dctcoef dct[4], int mf, int bias )
{
- 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 );
+ int nz = 0;
+ QUANT_ONE( dct[0], mf, bias );
+ QUANT_ONE( dct[1], mf, bias );
+ QUANT_ONE( dct[2], mf, bias );
+ QUANT_ONE( dct[3], mf, bias );
+ return !!nz;
}
#define DEQUANT_SHL( x ) \
- dct[y][x] = ( dct[y][x] * dequant_mf[i_mf][y][x] ) << i_qbits
+ dct[x] = ( dct[x] * dequant_mf[i_mf][x] ) << i_qbits
#define DEQUANT_SHR( x ) \
- dct[y][x] = ( dct[y][x] * dequant_mf[i_mf][y][x] + f ) >> (-i_qbits)
+ dct[x] = ( dct[x] * dequant_mf[i_mf][x] + f ) >> (-i_qbits)
-static void dequant_4x4( int16_t dct[4][4], int dequant_mf[6][4][4], int i_qp )
+static void dequant_4x4( dctcoef dct[16], int dequant_mf[6][16], int i_qp )
{
const int i_mf = i_qp%6;
const int i_qbits = i_qp/6 - 4;
- int y;
if( i_qbits >= 0 )
{
- for( y = 0; y < 4; y++ )
- {
- DEQUANT_SHL( 0 );
- DEQUANT_SHL( 1 );
- DEQUANT_SHL( 2 );
- DEQUANT_SHL( 3 );
- }
+ for( int i = 0; i < 16; i++ )
+ DEQUANT_SHL( i );
}
else
{
const int f = 1 << (-i_qbits-1);
- for( y = 0; y < 4; y++ )
- {
- DEQUANT_SHR( 0 );
- DEQUANT_SHR( 1 );
- DEQUANT_SHR( 2 );
- DEQUANT_SHR( 3 );
- }
+ for( int i = 0; i < 16; i++ )
+ DEQUANT_SHR( i );
}
}
-static void dequant_8x8( int16_t dct[8][8], int dequant_mf[6][8][8], int i_qp )
+static void dequant_8x8( dctcoef dct[64], int dequant_mf[6][64], int i_qp )
{
const int i_mf = i_qp%6;
const int i_qbits = i_qp/6 - 6;
- int y;
if( i_qbits >= 0 )
{
- for( y = 0; y < 8; y++ )
- {
- DEQUANT_SHL( 0 );
- DEQUANT_SHL( 1 );
- DEQUANT_SHL( 2 );
- DEQUANT_SHL( 3 );
- DEQUANT_SHL( 4 );
- DEQUANT_SHL( 5 );
- DEQUANT_SHL( 6 );
- DEQUANT_SHL( 7 );
- }
+ for( int i = 0; i < 64; i++ )
+ DEQUANT_SHL( i );
}
else
{
const int f = 1 << (-i_qbits-1);
- for( y = 0; y < 8; y++ )
- {
- DEQUANT_SHR( 0 );
- DEQUANT_SHR( 1 );
- DEQUANT_SHR( 2 );
- DEQUANT_SHR( 3 );
- DEQUANT_SHR( 4 );
- DEQUANT_SHR( 5 );
- DEQUANT_SHR( 6 );
- DEQUANT_SHR( 7 );
- }
+ for( int i = 0; i < 64; i++ )
+ DEQUANT_SHR( i );
}
}
-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( dctcoef dct[16], int dequant_mf[6][16], int i_qp )
{
const int i_qbits = i_qp/6 - 6;
- int y;
if( i_qbits >= 0 )
{
- const int i_dmf = dequant_mf[i_qp%6][0][0] << i_qbits;
-
- for( y = 0; y < 4; y++ )
- {
- dct[y][0] *= i_dmf;
- dct[y][1] *= i_dmf;
- dct[y][2] *= i_dmf;
- dct[y][3] *= i_dmf;
- }
+ const int i_dmf = dequant_mf[i_qp%6][0] << i_qbits;
+ for( int i = 0; i < 16; i++ )
+ dct[i] *= i_dmf;
}
else
{
- const int i_dmf = dequant_mf[i_qp%6][0][0];
+ const int i_dmf = dequant_mf[i_qp%6][0];
const int f = 1 << (-i_qbits-1);
-
- for( y = 0; y < 4; y++ )
- {
- dct[y][0] = ( dct[y][0] * i_dmf + f ) >> (-i_qbits);
- dct[y][1] = ( dct[y][1] * i_dmf + f ) >> (-i_qbits);
- dct[y][2] = ( dct[y][2] * i_dmf + f ) >> (-i_qbits);
- dct[y][3] = ( dct[y][3] * i_dmf + f ) >> (-i_qbits);
- }
+ for( int i = 0; i < 16; i++ )
+ dct[i] = ( dct[i] * i_dmf + f ) >> (-i_qbits);
}
}
-void x264_denoise_dct_core( int16_t *dct, uint32_t *sum, uint16_t *offset, int size )
+static void x264_denoise_dct( dctcoef *dct, uint32_t *sum, uint16_t *offset, int size )
{
- int i;
- for( i=1; i<size; i++ )
+ for( int i = 1; i < size; i++ )
{
int level = dct[i];
int sign = level>>15;
}
}
+/* (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( dctcoef *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 && MDCT_X2( &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( dctcoef *dct )
+{
+ return x264_decimate_score_internal( dct+1, 15 );
+}
+static int x264_decimate_score16( dctcoef *dct )
+{
+ return x264_decimate_score_internal( dct, 16 );
+}
+static int x264_decimate_score64( dctcoef *dct )
+{
+ return x264_decimate_score_internal( dct, 64 );
+}
+
+static int ALWAYS_INLINE x264_coeff_last_internal( dctcoef *l, int i_count )
+{
+ int i_last;
+ for( i_last = i_count-1; i_last >= 3; i_last -= 4 )
+ if( M64( l+i_last-3 ) )
+ break;
+ while( i_last >= 0 && l[i_last] == 0 )
+ i_last--;
+ return i_last;
+}
+
+static int x264_coeff_last4( dctcoef *l )
+{
+ return x264_coeff_last_internal( l, 4 );
+}
+static int x264_coeff_last15( dctcoef *l )
+{
+ return x264_coeff_last_internal( l, 15 );
+}
+static int x264_coeff_last16( dctcoef *l )
+{
+ return x264_coeff_last_internal( l, 16 );
+}
+static int x264_coeff_last64( dctcoef *l )
+{
+ return x264_coeff_last_internal( l, 64 );
+}
+
+#define level_run(num)\
+static int x264_coeff_level_run##num( dctcoef *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_core = x264_denoise_dct_core;
+ 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 )
pf->quant_4x4 = x264_quant_4x4_mmx;
pf->quant_8x8 = x264_quant_8x8_mmx;
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_core = x264_denoise_dct_core_mmx;
+ pf->denoise_dct = x264_denoise_dct_mmx;
#endif
}
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;
+ if( cpu&X264_CPU_SLOW_CTZ )
+ {
+ pf->decimate_score15 = x264_decimate_score15_mmxext_slowctz;
+ pf->decimate_score16 = x264_decimate_score16_mmxext_slowctz;
+ }
+ 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 = 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_core = x264_denoise_dct_core_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;
+ if( cpu&X264_CPU_SLOW_CTZ )
+ {
+ pf->decimate_score15 = x264_decimate_score15_sse2_slowctz;
+ pf->decimate_score16 = x264_decimate_score16_sse2_slowctz;
+ }
+ 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;
+ }
}
if( cpu&X264_CPU_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_core = x264_denoise_dct_core_ssse3;
+ pf->denoise_dct = x264_denoise_dct_ssse3;
+ pf->decimate_score15 = x264_decimate_score15_ssse3;
+ pf->decimate_score16 = x264_decimate_score16_ssse3;
+ if( cpu&X264_CPU_SLOW_CTZ )
+ {
+ pf->decimate_score15 = x264_decimate_score15_ssse3_slowctz;
+ pf->decimate_score16 = x264_decimate_score16_ssse3_slowctz;
+ }
+ pf->decimate_score64 = x264_decimate_score64_ssse3;
+ }
+
+ 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
+#ifdef HAVE_ALTIVEC
if( cpu&X264_CPU_ALTIVEC ) {
pf->quant_2x2_dc = x264_quant_2x2_dc_altivec;
pf->quant_4x4_dc = x264_quant_4x4_dc_altivec;
pf->dequant_8x8 = x264_dequant_8x8_altivec;
}
#endif
+
+#ifdef HAVE_ARMV6
+ if( cpu&X264_CPU_ARMV6 )
+ pf->coeff_last[DCT_CHROMA_DC] = x264_coeff_last4_arm;
+
+ if( cpu&X264_CPU_NEON )
+ {
+ pf->quant_2x2_dc = x264_quant_2x2_dc_neon;
+ pf->quant_4x4 = x264_quant_4x4_neon;
+ pf->quant_4x4_dc = x264_quant_4x4_dc_neon;
+ pf->quant_8x8 = x264_quant_8x8_neon;
+ pf->dequant_4x4 = x264_dequant_4x4_neon;
+ pf->dequant_4x4_dc = x264_dequant_4x4_dc_neon;
+ pf->dequant_8x8 = x264_dequant_8x8_neon;
+ pf->coeff_last[ DCT_LUMA_AC] = x264_coeff_last15_neon;
+ pf->coeff_last[DCT_LUMA_4x4] = x264_coeff_last16_neon;
+ pf->coeff_last[DCT_LUMA_8x8] = x264_coeff_last64_neon;
+ }
+#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