#include "common.h"
-void x264_quant_8x8_core16_mmx( int16_t dct[8][8], int quant_mf[8][8], int i_qbits, int f );
-void x264_quant_4x4_core16_mmx( int16_t dct[4][4], int quant_mf[4][4], int i_qbits, int f );
-void x264_quant_8x8_core32_mmx( int16_t dct[8][8], int quant_mf[8][8], int i_qbits, int f );
-void x264_quant_4x4_core32_mmx( int16_t dct[4][4], int quant_mf[4][4], int i_qbits, int f );
-void x264_quant_4x4_dc_core32_mmx( int16_t dct[4][4], int i_quant_mf, int i_qbits, int f );
-void x264_quant_2x2_dc_core32_mmx( int16_t dct[2][2], int i_quant_mf, int i_qbits, int f );
-
+#ifdef HAVE_MMXEXT
+#include "i386/quant.h"
+#endif
+#ifdef ARCH_PPC
+# include "ppc/quant.h"
+#endif
#define QUANT_ONE( coef, mf ) \
{ \
QUANT_ONE( dct[0][3], i_quant_mf );
}
+#define DEQUANT_SHL( x ) \
+ dct[y][x] = ( dct[y][x] * dequant_mf[i_mf][y][x] ) << i_qbits
+
+#define DEQUANT_SHR( x ) \
+ dct[y][x] = ( dct[y][x] * dequant_mf[i_mf][y][x] + f ) >> (-i_qbits)
+
+static void dequant_4x4( int16_t dct[4][4], int dequant_mf[6][4][4], 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 );
+ }
+ }
+ 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 );
+ }
+ }
+}
+
+static void dequant_8x8( int16_t dct[8][8], int dequant_mf[6][8][8], 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 );
+ }
+ }
+ 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 );
+ }
+ }
+}
+
+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 )
+{
+ 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;
+ }
+ }
+ else
+ {
+ const int i_dmf = dequant_mf[i_qp%6][0][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);
+ }
+ }
+}
void x264_quant_init( x264_t *h, int cpu, x264_quant_function_t *pf )
{
- const char *name[4] = { "C", "C", "C", "C" };
+ int i, j, maxQ8=0, maxQ4=0, maxQdc=0;
pf->quant_8x8_core = quant_8x8_core;
pf->quant_4x4_core = quant_4x4_core;
pf->quant_4x4_dc_core = quant_4x4_dc_core;
pf->quant_2x2_dc_core = quant_2x2_dc_core;
+ pf->dequant_4x4 = dequant_4x4;
+ pf->dequant_8x8 = dequant_8x8;
+
+ /* determine the biggest coefficient in all quant8_mf tables */
+ for( j = 0; j < 2; j++ )
+ for( i = 0; i < 6*8*8; i++ )
+ {
+ int q = h->quant8_mf[j][0][0][i];
+ if( maxQ8 < q )
+ maxQ8 = q;
+ }
+
+ /* determine the biggest coefficient in all quant4_mf tables ( maxQ4 )
+ and the biggest DC coefficient if all quant4_mf tables ( maxQdc ) */
+ for( j = 0; j < 4; j++ )
+ for( i = 0; i < 6*4*4; i++ )
+ {
+ int q = h->quant4_mf[j][0][0][i];
+ if( maxQ4 < q )
+ maxQ4 = q;
+ if( maxQdc < q && i%16 == 0 )
+ maxQdc = q;
+ }
+
#ifdef HAVE_MMXEXT
- if( cpu&X264_CPU_MMX )
+
+ /* select quant_8x8 based on CPU and maxQ8 */
+ if( maxQ8 < (1<<15) && cpu&X264_CPU_MMX )
+ pf->quant_8x8_core = x264_quant_8x8_core15_mmx;
+ else
+ if( maxQ8 < (1<<16) && cpu&X264_CPU_MMXEXT )
+ pf->quant_8x8_core = x264_quant_8x8_core16_mmxext;
+ else
+ if( cpu&X264_CPU_MMXEXT )
+ pf->quant_8x8_core = x264_quant_8x8_core32_mmxext;
+
+ /* select quant_4x4 based on CPU and maxQ4 */
+ if( maxQ4 < (1<<15) && cpu&X264_CPU_MMX )
+ pf->quant_4x4_core = x264_quant_4x4_core15_mmx;
+ else
+ if( maxQ4 < (1<<16) && cpu&X264_CPU_MMXEXT )
+ pf->quant_4x4_core = x264_quant_4x4_core16_mmxext;
+ else
+ if( cpu&X264_CPU_MMXEXT )
+ pf->quant_4x4_core = x264_quant_4x4_core32_mmxext;
+
+ /* select quant_XxX_dc based on CPU and maxQdc */
+ if( maxQdc < (1<<16) && cpu&X264_CPU_MMXEXT )
{
- int i;
-
- pf->quant_8x8_core = x264_quant_8x8_core16_mmx;
- pf->quant_4x4_core = x264_quant_4x4_core16_mmx;
- pf->quant_4x4_dc_core = x264_quant_4x4_dc_core32_mmx;
- pf->quant_2x2_dc_core = x264_quant_2x2_dc_core32_mmx;
-
- name[0] = name[1] = "16MMX";
- name[2] = name[3] = "32MMX";
-
- for( i = 0; i < 2*6*8*8; i++ )
- if( (***h->quant8_mf)[i] >= 0x8000 )
- {
- pf->quant_8x8_core = x264_quant_8x8_core32_mmx;
- name[0] = "32MMX";
- }
-
- for( i = 0; i < 4*6*4*4; i++ )
- if( (***h->quant4_mf)[i] >= 0x8000 )
- {
- pf->quant_4x4_core = x264_quant_4x4_core32_mmx;
- name[1] = "32MMX";
- }
+ pf->quant_4x4_dc_core = x264_quant_4x4_dc_core16_mmxext;
+ pf->quant_2x2_dc_core = x264_quant_2x2_dc_core16_mmxext;
+ }
+ else
+ if( maxQdc < (1<<15) && cpu&X264_CPU_MMX )
+ {
+ pf->quant_4x4_dc_core = x264_quant_4x4_dc_core15_mmx;
+ pf->quant_2x2_dc_core = x264_quant_2x2_dc_core15_mmx;
+ }
+ else
+ if( cpu&X264_CPU_MMXEXT )
+ {
+ pf->quant_4x4_dc_core = x264_quant_4x4_dc_core32_mmxext;
+ pf->quant_2x2_dc_core = x264_quant_2x2_dc_core32_mmxext;
}
-#endif
- x264_log( h, X264_LOG_DEBUG, "using quant functions 8x8=%s 4x4=%s dc4x4=%s dc2x2=%s\n",
- name[0], name[1], name[2], name[3] );
+ if( cpu&X264_CPU_MMX )
+ {
+ /* dequant is not subject to the above CQM-dependent overflow issues,
+ * as long as the inputs are in the range generable by dct+quant.
+ * that is not guaranteed by the standard, but is true within x264 */
+ pf->dequant_4x4 = x264_dequant_4x4_mmx;
+ pf->dequant_8x8 = x264_dequant_8x8_mmx;
+ }
+#endif /* HAVE_MMXEXT */
+
+#ifdef ARCH_PPC
+ if( cpu&X264_CPU_ALTIVEC ) {
+ if( maxQ8 < (1<<16) )
+ {
+ pf->quant_8x8_core = x264_quant_8x8_altivec;
+ }
+ if( maxQ4 < (1<<16) )
+ {
+ pf->quant_4x4_core = x264_quant_4x4_altivec;
+ }
+ if( maxQdc < (1<<16) )
+ {
+ pf->quant_4x4_dc_core = x264_quant_4x4_dc_altivec;
+ }
+ }
+#endif /* ARCH_PPC */
}
projects / x264 / blobdiff