/*****************************************************************************
- * cabac.c: h264 encoder library
+ * cabac.c: cabac bitstream writing
*****************************************************************************
- * Copyright (C) 2003-2008 x264 project
+ * Copyright (C) 2003-2010 x264 project
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
* Loren Merritt <lorenm@u.washington.edu>
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
+ *
+ * This program is also available under a commercial proprietary license.
+ * For more information, contact us at licensing@x264.com.
*****************************************************************************/
#include "common/common.h"
if( h->sh.i_type == SLICE_TYPE_I )
{
int ctx = 0;
- if( h->mb.i_mb_type_left >= 0 && h->mb.i_mb_type_left != I_4x4 )
+ if( (h->mb.i_neighbour & MB_LEFT) && h->mb.i_mb_type_left != I_4x4 )
ctx++;
- if( h->mb.i_mb_type_top >= 0 && h->mb.i_mb_type_top != I_4x4 )
+ if( (h->mb.i_neighbour & MB_TOP) && h->mb.i_mb_type_top != I_4x4 )
ctx++;
x264_cabac_mb_type_intra( h, cb, i_mb_type, 3+ctx, 3+3, 3+4, 3+5, 3+6, 3+7 );
/* prefix: 14, suffix: 17 */
if( i_mb_type == P_L0 )
{
- if( h->mb.i_partition == D_16x16 )
- {
- x264_cabac_encode_decision_noup( cb, 14, 0 );
- x264_cabac_encode_decision_noup( cb, 15, 0 );
- x264_cabac_encode_decision_noup( cb, 16, 0 );
- }
- else if( h->mb.i_partition == D_16x8 )
- {
- x264_cabac_encode_decision_noup( cb, 14, 0 );
- x264_cabac_encode_decision_noup( cb, 15, 1 );
- x264_cabac_encode_decision_noup( cb, 17, 1 );
- }
- else if( h->mb.i_partition == D_8x16 )
- {
- x264_cabac_encode_decision_noup( cb, 14, 0 );
- x264_cabac_encode_decision_noup( cb, 15, 1 );
- x264_cabac_encode_decision_noup( cb, 17, 0 );
- }
+ x264_cabac_encode_decision_noup( cb, 14, 0 );
+ x264_cabac_encode_decision_noup( cb, 15, h->mb.i_partition != D_16x16 );
+ x264_cabac_encode_decision_noup( cb, 17-(h->mb.i_partition == D_16x16), h->mb.i_partition == D_16x8 );
}
else if( i_mb_type == P_8x8 )
{
else //if( h->sh.i_type == SLICE_TYPE_B )
{
int ctx = 0;
- if( h->mb.i_mb_type_left >= 0 && h->mb.i_mb_type_left != B_SKIP && h->mb.i_mb_type_left != B_DIRECT )
+ if( (h->mb.i_neighbour & MB_LEFT) && h->mb.i_mb_type_left != B_SKIP && h->mb.i_mb_type_left != B_DIRECT )
ctx++;
- if( h->mb.i_mb_type_top >= 0 && h->mb.i_mb_type_top != B_SKIP && h->mb.i_mb_type_top != B_DIRECT )
+ if( (h->mb.i_neighbour & MB_TOP) && h->mb.i_mb_type_top != B_SKIP && h->mb.i_mb_type_top != B_DIRECT )
ctx++;
if( i_mb_type == B_DIRECT )
}
else
{
- static const uint8_t i_mb_bits[9*3][6] =
+ static const uint8_t i_mb_bits[9*3] =
{
- { 1,0,0,0,1,2 }, { 1,0,0,1,0,2 }, { 0,0,2,2,2,2 }, /* L0 L0 */
- { 1,0,1,0,1,2 }, { 1,0,1,1,0,2 }, {0}, /* L0 L1 */
- { 1,1,0,0,0,0 }, { 1,1,0,0,0,1 }, {0}, /* L0 BI */
- { 1,0,1,1,1,2 }, { 1,1,1,1,0,2 }, {0}, /* L1 L0 */
- { 1,0,0,1,1,2 }, { 1,0,1,0,0,2 }, { 0,1,2,2,2,2 }, /* L1 L1 */
- { 1,1,0,0,1,0 }, { 1,1,0,0,1,1 }, {0}, /* L1 BI */
- { 1,1,0,1,0,0 }, { 1,1,0,1,0,1 }, {0}, /* BI L0 */
- { 1,1,0,1,1,0 }, { 1,1,0,1,1,1 }, {0}, /* BI L1 */
- { 1,1,1,0,0,0 }, { 1,1,1,0,0,1 }, { 1,0,0,0,0,2 }, /* BI BI */
+ 0x31, 0x29, 0x4, /* L0 L0 */
+ 0x35, 0x2d, 0, /* L0 L1 */
+ 0x43, 0x63, 0, /* L0 BI */
+ 0x3d, 0x2f, 0, /* L1 L0 */
+ 0x39, 0x25, 0x6, /* L1 L1 */
+ 0x53, 0x73, 0, /* L1 BI */
+ 0x4b, 0x6b, 0, /* BI L0 */
+ 0x5b, 0x7b, 0, /* BI L1 */
+ 0x47, 0x67, 0x21 /* BI BI */
};
const int idx = (i_mb_type - B_L0_L0) * 3 + (h->mb.i_partition - D_16x8);
+ int bits = i_mb_bits[idx];
- x264_cabac_encode_decision_noup( cb, 27+3, i_mb_bits[idx][0] );
- x264_cabac_encode_decision( cb, 27+5-i_mb_bits[idx][0], i_mb_bits[idx][1] );
- if( i_mb_bits[idx][2] != 2 )
+ x264_cabac_encode_decision_noup( cb, 27+3, bits&1 );
+ x264_cabac_encode_decision( cb, 27+5-(bits&1), (bits>>1)&1 ); bits >>= 2;
+ if( bits != 1 )
{
- x264_cabac_encode_decision( cb, 27+5, i_mb_bits[idx][2] );
- x264_cabac_encode_decision( cb, 27+5, i_mb_bits[idx][3] );
- x264_cabac_encode_decision( cb, 27+5, i_mb_bits[idx][4] );
- if( i_mb_bits[idx][5] != 2 )
- x264_cabac_encode_decision_noup( cb, 27+5, i_mb_bits[idx][5] );
+ x264_cabac_encode_decision( cb, 27+5, bits&1 ); bits >>= 1;
+ x264_cabac_encode_decision( cb, 27+5, bits&1 ); bits >>= 1;
+ x264_cabac_encode_decision( cb, 27+5, bits&1 ); bits >>= 1;
+ if( bits != 1 )
+ x264_cabac_encode_decision_noup( cb, 27+5, bits&1 );
}
}
}
static void x264_cabac_mb_intra_chroma_pred_mode( x264_t *h, x264_cabac_t *cb )
{
- const int i_mode = x264_mb_pred_mode8x8c_fix[ h->mb.i_chroma_pred_mode ];
+ const int i_mode = x264_mb_pred_mode8x8c_fix[h->mb.i_chroma_pred_mode];
int ctx = 0;
/* No need to test for I4x4 or I_16x16 as cache_save handle that */
- if( (h->mb.i_neighbour & MB_LEFT) && h->mb.chroma_pred_mode[h->mb.i_mb_xy - 1] != 0 )
+ if( (h->mb.i_neighbour & MB_LEFT) && h->mb.chroma_pred_mode[h->mb.i_mb_left_xy] != 0 )
ctx++;
if( (h->mb.i_neighbour & MB_TOP) && h->mb.chroma_pred_mode[h->mb.i_mb_top_xy] != 0 )
ctx++;
int cbp = h->mb.i_cbp_luma;
int cbp_l = h->mb.cache.i_cbp_left;
int cbp_t = h->mb.cache.i_cbp_top;
- x264_cabac_encode_decision( cb, 76 - ((cbp_l >> 1) & 1) - ((cbp_t >> 1) & 2), (h->mb.i_cbp_luma >> 0) & 1 );
- x264_cabac_encode_decision( cb, 76 - ((cbp >> 0) & 1) - ((cbp_t >> 2) & 2), (h->mb.i_cbp_luma >> 1) & 1 );
- x264_cabac_encode_decision( cb, 76 - ((cbp_l >> 3) & 1) - ((cbp << 1) & 2), (h->mb.i_cbp_luma >> 2) & 1 );
- x264_cabac_encode_decision_noup( cb, 76 - ((cbp >> 2) & 1) - ((cbp >> 0) & 2), (h->mb.i_cbp_luma >> 3) & 1 );
+ x264_cabac_encode_decision ( cb, 76 - ((cbp_l >> 1) & 1) - ((cbp_t >> 1) & 2), (cbp >> 0) & 1 );
+ x264_cabac_encode_decision ( cb, 76 - ((cbp >> 0) & 1) - ((cbp_t >> 2) & 2), (cbp >> 1) & 1 );
+ x264_cabac_encode_decision ( cb, 76 - ((cbp_l >> 3) & 1) - ((cbp << 1) & 2), (cbp >> 2) & 1 );
+ x264_cabac_encode_decision_noup( cb, 76 - ((cbp >> 2) & 1) - ((cbp >> 0) & 2), (cbp >> 3) & 1 );
}
static void x264_cabac_mb_cbp_chroma( x264_t *h, x264_cabac_t *cb )
ctx = 4;
if( cbp_a == 0x20 ) ctx++;
if( cbp_b == 0x20 ) ctx += 2;
- x264_cabac_encode_decision_noup( cb, 77 + ctx, h->mb.i_cbp_chroma > 1 );
+ x264_cabac_encode_decision_noup( cb, 77 + ctx, h->mb.i_cbp_chroma >> 1 );
}
}
static void x264_cabac_mb_qp_delta( x264_t *h, x264_cabac_t *cb )
{
- int i_mbn_xy = h->mb.i_mb_prev_xy;
int i_dqp = h->mb.i_qp - h->mb.i_last_qp;
int ctx;
i_dqp = 0;
}
- /* No need to test for PCM / SKIP */
- ctx = h->mb.i_last_dqp &&
- ( h->mb.type[i_mbn_xy] == I_16x16 || (h->mb.cbp[i_mbn_xy]&0x3f) );
+ /* Since, per the above, empty-CBP I16x16 blocks never have delta quants,
+ * we don't have to check for them. */
+ ctx = h->mb.i_last_dqp && h->mb.cbp[h->mb.i_mb_prev_xy];
if( i_dqp != 0 )
{
int val = i_dqp <= 0 ? (-2*i_dqp) : (2*i_dqp - 1);
- /* dqp is interpreted modulo 52 */
- if( val >= 51 && val != 52 )
- val = 103 - val;
- while( val-- )
+ /* dqp is interpreted modulo (QP_MAX+1) */
+ if( val >= QP_MAX && val != QP_MAX+1 )
+ val = 2*QP_MAX+1 - val;
+ do
{
x264_cabac_encode_decision( cb, 60 + ctx, 1 );
ctx = 2+(ctx>>1);
- }
+ } while( --val );
}
x264_cabac_encode_decision_noup( cb, 60 + ctx, 0 );
}
#if !RDO_SKIP_BS
void x264_cabac_mb_skip( x264_t *h, int b_skip )
{
- int ctx = (h->mb.i_mb_type_left >= 0 && !IS_SKIP( h->mb.i_mb_type_left ))
- + (h->mb.i_mb_type_top >= 0 && !IS_SKIP( h->mb.i_mb_type_top ))
+ int ctx = ((h->mb.i_neighbour & MB_LEFT) && !IS_SKIP( h->mb.i_mb_type_left ))
+ + ((h->mb.i_neighbour & MB_TOP) && !IS_SKIP( h->mb.i_mb_type_top ))
+ (h->sh.i_type == SLICE_TYPE_P ? 11 : 24);
x264_cabac_encode_decision( &h->cabac, ctx, b_skip );
}
}
}
-static inline void x264_cabac_mb_sub_b_partition( x264_cabac_t *cb, int i_sub )
+static ALWAYS_INLINE void x264_cabac_mb_sub_b_partition( x264_cabac_t *cb, int i_sub )
{
if( i_sub == D_DIRECT_8x8 )
{
x264_cabac_encode_decision( cb, 39, i_sub == D_L1_8x8 );
}
-static inline void x264_cabac_mb_transform_size( x264_t *h, x264_cabac_t *cb )
+static ALWAYS_INLINE void x264_cabac_mb_transform_size( x264_t *h, x264_cabac_t *cb )
{
int ctx = 399 + h->mb.cache.i_neighbour_transform_size;
x264_cabac_encode_decision_noup( cb, ctx, h->mb.b_transform_8x8 );
const int i8 = x264_scan8[idx];
const int i_refa = h->mb.cache.ref[i_list][i8 - 1];
const int i_refb = h->mb.cache.ref[i_list][i8 - 8];
- int i_ref = h->mb.cache.ref[i_list][i8];
int ctx = 0;
if( i_refa > 0 && !h->mb.cache.skip[i8 - 1] )
if( i_refb > 0 && !h->mb.cache.skip[i8 - 8] )
ctx += 2;
- while( i_ref > 0 )
+ for( int i_ref = h->mb.cache.ref[i_list][i8]; i_ref > 0; i_ref-- )
{
x264_cabac_encode_decision( cb, 54 + ctx, 1 );
ctx = (ctx>>2)+4;
- i_ref--;
}
x264_cabac_encode_decision( cb, 54 + ctx, 0 );
}
-static inline void x264_cabac_mb_mvd_cpn( x264_t *h, x264_cabac_t *cb, int i_list, int idx, int l, int mvd, int ctx )
+static ALWAYS_INLINE int x264_cabac_mb_mvd_cpn( x264_t *h, x264_cabac_t *cb, int i_list, int idx, int l, int mvd, int ctx )
{
const int i_abs = abs( mvd );
const int ctxbase = l ? 47 : 40;
- int i;
#if RDO_SKIP_BS
if( i_abs == 0 )
x264_cabac_encode_decision( cb, ctxbase + ctx, 0 );
- else if( i_abs < 9 )
+ else
{
x264_cabac_encode_decision( cb, ctxbase + ctx, 1 );
- if( i_abs > 4 )
- {
- x264_cabac_encode_decision( cb, ctxbase + 3, 1 );
- x264_cabac_encode_decision( cb, ctxbase + 4, 1 );
- x264_cabac_encode_decision( cb, ctxbase + 5, 1 );
- cb->f8_bits_encoded += cabac_size_unary[i_abs - 3][cb->state[ctxbase+6]];
- cb->state[ctxbase+6] = cabac_transition_unary[i_abs - 3][cb->state[ctxbase+6]];
- }
- else
+ if( i_abs <= 3 )
{
- for( i = 1; i < i_abs; i++ )
+ for( int i = 1; i < i_abs; i++ )
x264_cabac_encode_decision( cb, ctxbase + i + 2, 1 );
x264_cabac_encode_decision( cb, ctxbase + i_abs + 2, 0 );
x264_cabac_encode_bypass( cb, mvd < 0 );
}
- }
- else
- {
- x264_cabac_encode_decision( cb, ctxbase + ctx, 1 );
- x264_cabac_encode_decision( cb, ctxbase + 3, 1 );
- x264_cabac_encode_decision( cb, ctxbase + 4, 1 );
- x264_cabac_encode_decision( cb, ctxbase + 5, 1 );
- cb->f8_bits_encoded += cabac_size_5ones[cb->state[ctxbase+6]];
- cb->state[ctxbase+6] = cabac_transition_5ones[cb->state[ctxbase+6]];
- x264_cabac_encode_ue_bypass( cb, 3, i_abs - 9 );
+ else
+ {
+ x264_cabac_encode_decision( cb, ctxbase + 3, 1 );
+ x264_cabac_encode_decision( cb, ctxbase + 4, 1 );
+ x264_cabac_encode_decision( cb, ctxbase + 5, 1 );
+ if( i_abs < 9 )
+ {
+ cb->f8_bits_encoded += cabac_size_unary[i_abs - 3][cb->state[ctxbase+6]];
+ cb->state[ctxbase+6] = cabac_transition_unary[i_abs - 3][cb->state[ctxbase+6]];
+ }
+ else
+ {
+ cb->f8_bits_encoded += cabac_size_5ones[cb->state[ctxbase+6]];
+ cb->state[ctxbase+6] = cabac_transition_5ones[cb->state[ctxbase+6]];
+ x264_cabac_encode_ue_bypass( cb, 3, i_abs - 9 );
+ }
+ }
}
#else
static const uint8_t ctxes[8] = { 3,4,5,6,6,6,6,6 };
if( i_abs == 0 )
x264_cabac_encode_decision( cb, ctxbase + ctx, 0 );
- else if( i_abs < 9 )
- {
- x264_cabac_encode_decision( cb, ctxbase + ctx, 1 );
- for( i = 1; i < i_abs; i++ )
- x264_cabac_encode_decision( cb, ctxbase + ctxes[i-1], 1 );
- x264_cabac_encode_decision( cb, ctxbase + ctxes[i_abs-1], 0 );
- x264_cabac_encode_bypass( cb, mvd < 0 );
- }
else
{
x264_cabac_encode_decision( cb, ctxbase + ctx, 1 );
- for( i = 1; i < 9; i++ )
- x264_cabac_encode_decision( cb, ctxbase + ctxes[i-1], 1 );
- x264_cabac_encode_ue_bypass( cb, 3, i_abs - 9 );
+ if( i_abs < 9 )
+ {
+ for( int i = 1; i < i_abs; i++ )
+ x264_cabac_encode_decision( cb, ctxbase + ctxes[i-1], 1 );
+ x264_cabac_encode_decision( cb, ctxbase + ctxes[i_abs-1], 0 );
+ }
+ else
+ {
+ for( int i = 1; i < 9; i++ )
+ x264_cabac_encode_decision( cb, ctxbase + ctxes[i-1], 1 );
+ x264_cabac_encode_ue_bypass( cb, 3, i_abs - 9 );
+ }
x264_cabac_encode_bypass( cb, mvd < 0 );
}
#endif
+ /* Since we don't need to keep track of MVDs larger than 33, just cap the value.
+ * This lets us store MVDs as 8-bit values instead of 16-bit. */
+ return X264_MIN( i_abs, 33 );
}
-static NOINLINE uint32_t x264_cabac_mb_mvd( x264_t *h, x264_cabac_t *cb, int i_list, int idx, int width )
+static NOINLINE uint16_t x264_cabac_mb_mvd( x264_t *h, x264_cabac_t *cb, int i_list, int idx, int width )
{
- DECLARE_ALIGNED_4( int16_t mvp[2] );
- uint32_t amvd;
+ ALIGNED_4( int16_t mvp[2] );
int mdx, mdy;
/* Calculate mvd */
x264_mb_predict_mv( h, i_list, idx, width, mvp );
mdx = h->mb.cache.mv[i_list][x264_scan8[idx]][0] - mvp[0];
mdy = h->mb.cache.mv[i_list][x264_scan8[idx]][1] - mvp[1];
- amvd = x264_cabac_amvd_sum(h->mb.cache.mvd[i_list][x264_scan8[idx] - 1],
- h->mb.cache.mvd[i_list][x264_scan8[idx] - 8]);
+ uint16_t amvd = x264_cabac_mvd_sum(h->mb.cache.mvd[i_list][x264_scan8[idx] - 1],
+ h->mb.cache.mvd[i_list][x264_scan8[idx] - 8]);
/* encode */
- x264_cabac_mb_mvd_cpn( h, cb, i_list, idx, 0, mdx, amvd&0xFFFF );
- x264_cabac_mb_mvd_cpn( h, cb, i_list, idx, 1, mdy, amvd>>16 );
+ mdx = x264_cabac_mb_mvd_cpn( h, cb, i_list, idx, 0, mdx, amvd&0xFF );
+ mdy = x264_cabac_mb_mvd_cpn( h, cb, i_list, idx, 1, mdy, amvd>>8 );
- return pack16to32_mask(mdx,mdy);
+ return pack8to16(mdx,mdy);
}
#define x264_cabac_mb_mvd(h,cb,i_list,idx,width,height)\
+do\
{\
- uint32_t mvd = x264_cabac_mb_mvd(h,cb,i_list,idx,width);\
+ uint16_t mvd = x264_cabac_mb_mvd(h,cb,i_list,idx,width);\
x264_macroblock_cache_mvd( h, block_idx_x[idx], block_idx_y[idx], width, height, i_list, mvd );\
-}
+} while(0)
-static inline void x264_cabac_mb8x8_mvd( x264_t *h, x264_cabac_t *cb, int i_list, int i )
+static inline void x264_cabac_mb8x8_mvd( x264_t *h, x264_cabac_t *cb, int i )
{
- if( !x264_mb_partition_listX_table[i_list][ h->mb.i_sub_partition[i] ] )
- return;
-
switch( h->mb.i_sub_partition[i] )
{
case D_L0_8x8:
- case D_L1_8x8:
- case D_BI_8x8:
- x264_cabac_mb_mvd( h, cb, i_list, 4*i, 2, 2 );
+ x264_cabac_mb_mvd( h, cb, 0, 4*i, 2, 2 );
break;
case D_L0_8x4:
- case D_L1_8x4:
- case D_BI_8x4:
- x264_cabac_mb_mvd( h, cb, i_list, 4*i+0, 2, 1 );
- x264_cabac_mb_mvd( h, cb, i_list, 4*i+2, 2, 1 );
+ x264_cabac_mb_mvd( h, cb, 0, 4*i+0, 2, 1 );
+ x264_cabac_mb_mvd( h, cb, 0, 4*i+2, 2, 1 );
break;
case D_L0_4x8:
- case D_L1_4x8:
- case D_BI_4x8:
- x264_cabac_mb_mvd( h, cb, i_list, 4*i+0, 1, 2 );
- x264_cabac_mb_mvd( h, cb, i_list, 4*i+1, 1, 2 );
+ x264_cabac_mb_mvd( h, cb, 0, 4*i+0, 1, 2 );
+ x264_cabac_mb_mvd( h, cb, 0, 4*i+1, 1, 2 );
break;
case D_L0_4x4:
- case D_L1_4x4:
- case D_BI_4x4:
- x264_cabac_mb_mvd( h, cb, i_list, 4*i+0, 1, 1 );
- x264_cabac_mb_mvd( h, cb, i_list, 4*i+1, 1, 1 );
- x264_cabac_mb_mvd( h, cb, i_list, 4*i+2, 1, 1 );
- x264_cabac_mb_mvd( h, cb, i_list, 4*i+3, 1, 1 );
+ x264_cabac_mb_mvd( h, cb, 0, 4*i+0, 1, 1 );
+ x264_cabac_mb_mvd( h, cb, 0, 4*i+1, 1, 1 );
+ x264_cabac_mb_mvd( h, cb, 0, 4*i+2, 1, 1 );
+ x264_cabac_mb_mvd( h, cb, 0, 4*i+3, 1, 1 );
break;
+ default:
+ assert(0);
}
}
-/* i_ctxBlockCat: 0-> DC 16x16 i_idx = 0
+/* ctx_block_cat: 0-> DC 16x16 i_idx = 0
* 1-> AC 16x16 i_idx = luma4x4idx
* 2-> Luma4x4 i_idx = luma4x4idx
* 3-> DC Chroma i_idx = iCbCr
// node ctx: 0..3: abslevel1 (with abslevelgt1 == 0).
// 4..7: abslevelgt1 + 3 (and abslevel1 doesn't matter).
/* map node ctx => cabac ctx for level=1 */
-static const int coeff_abs_level1_ctx[8] = { 1, 2, 3, 4, 0, 0, 0, 0 };
+static const uint8_t coeff_abs_level1_ctx[8] = { 1, 2, 3, 4, 0, 0, 0, 0 };
/* map node ctx => cabac ctx for level>1 */
-static const int coeff_abs_levelgt1_ctx[8] = { 5, 5, 5, 5, 6, 7, 8, 9 };
+static const uint8_t coeff_abs_levelgt1_ctx[8] = { 5, 5, 5, 5, 6, 7, 8, 9 };
static const uint8_t coeff_abs_level_transition[2][8] = {
/* update node ctx after coding a level=1 */
{ 1, 2, 3, 3, 4, 5, 6, 7 },
/* update node ctx after coding a level>1 */
{ 4, 4, 4, 4, 5, 6, 7, 7 }
};
-static const int count_cat_m1[5] = {15, 14, 15, 3, 14};
+static const uint8_t count_cat_m1[5] = {15, 14, 15, 3, 14};
#if !RDO_SKIP_BS
-static void block_residual_write_cabac( x264_t *h, x264_cabac_t *cb, int i_ctxBlockCat, int16_t *l )
+static void block_residual_write_cabac( x264_t *h, x264_cabac_t *cb, int ctx_block_cat, dctcoef *l )
{
- const int i_ctx_sig = significant_coeff_flag_offset[h->mb.b_interlaced][i_ctxBlockCat];
- const int i_ctx_last = last_coeff_flag_offset[h->mb.b_interlaced][i_ctxBlockCat];
- const int i_ctx_level = coeff_abs_level_m1_offset[i_ctxBlockCat];
- const uint8_t *significant_coeff_flag_offset = significant_coeff_flag_offset_8x8[h->mb.b_interlaced];
+ const int i_ctx_sig = significant_coeff_flag_offset[h->mb.b_interlaced][ctx_block_cat];
+ const int i_ctx_last = last_coeff_flag_offset[h->mb.b_interlaced][ctx_block_cat];
+ const int i_ctx_level = coeff_abs_level_m1_offset[ctx_block_cat];
+ const uint8_t *sig_offset = significant_coeff_flag_offset_8x8[h->mb.b_interlaced];
int i_coeff_abs_m1[64];
int i_coeff_sign[64];
int i_coeff = 0;
int node_ctx = 0;
int i = 0;
- i_last = h->quantf.coeff_last[i_ctxBlockCat](l);
+ i_last = h->quantf.coeff_last[ctx_block_cat](l);
#define WRITE_SIGMAP( l8x8 )\
while(1)\
i_coeff_abs_m1[i_coeff] = abs(l[i]) - 1;\
i_coeff_sign[i_coeff] = l[i] < 0;\
i_coeff++;\
- x264_cabac_encode_decision( cb, i_ctx_sig + (l8x8 ? significant_coeff_flag_offset[i] : i), 1 );\
+ x264_cabac_encode_decision( cb, i_ctx_sig + (l8x8 ? sig_offset[i] : i), 1 );\
if( i == i_last )\
{\
x264_cabac_encode_decision( cb, i_ctx_last + (l8x8 ? last_coeff_flag_offset_8x8[i] : i), 1 );\
x264_cabac_encode_decision( cb, i_ctx_last + (l8x8 ? last_coeff_flag_offset_8x8[i] : i), 0 );\
}\
else\
- x264_cabac_encode_decision( cb, i_ctx_sig + (l8x8 ? significant_coeff_flag_offset[i] : i), 0 );\
+ x264_cabac_encode_decision( cb, i_ctx_sig + (l8x8 ? sig_offset[i] : i), 0 );\
i++;\
if( i == i_count_m1 )\
{\
}\
}
- if( i_ctxBlockCat == DCT_LUMA_8x8 )
+ if( ctx_block_cat == DCT_LUMA_8x8 )
{
const int i_count_m1 = 63;
WRITE_SIGMAP( 1 )
}
else
{
- const int i_count_m1 = count_cat_m1[i_ctxBlockCat];
+ const int i_count_m1 = count_cat_m1[ctx_block_cat];
WRITE_SIGMAP( 0 )
}
* this is slightly incorrect because the sigmap is not reversible
* (contexts are repeated). However, there is nearly no quality penalty
* for this (~0.001db) and the speed boost (~30%) is worth it. */
-static void ALWAYS_INLINE block_residual_write_cabac_internal( x264_t *h, x264_cabac_t *cb, int i_ctxBlockCat, int16_t *l, int b_8x8 )
+static void ALWAYS_INLINE block_residual_write_cabac_internal( x264_t *h, x264_cabac_t *cb, int ctx_block_cat, dctcoef *l, int b_8x8 )
{
- const int i_ctx_sig = significant_coeff_flag_offset[h->mb.b_interlaced][i_ctxBlockCat];
- const int i_ctx_last = last_coeff_flag_offset[h->mb.b_interlaced][i_ctxBlockCat];
- const int i_ctx_level = coeff_abs_level_m1_offset[i_ctxBlockCat];
- const uint8_t *significant_coeff_flag_offset = significant_coeff_flag_offset_8x8[h->mb.b_interlaced];
- int i_last, i_coeff_abs, ctx, i, node_ctx;
+ const int i_ctx_sig = significant_coeff_flag_offset[h->mb.b_interlaced][ctx_block_cat];
+ const int i_ctx_last = last_coeff_flag_offset[h->mb.b_interlaced][ctx_block_cat];
+ const int i_ctx_level = coeff_abs_level_m1_offset[ctx_block_cat];
+ const uint8_t *sig_offset = significant_coeff_flag_offset_8x8[h->mb.b_interlaced];
+ int i_last, i_coeff_abs, ctx, node_ctx;
- i_last = h->quantf.coeff_last[i_ctxBlockCat](l);
+ i_last = h->quantf.coeff_last[ctx_block_cat](l);
i_coeff_abs = abs(l[i_last]);
ctx = coeff_abs_level1_ctx[0] + i_ctx_level;
- if( i_last != (b_8x8 ? 63 : count_cat_m1[i_ctxBlockCat]) )
+ if( i_last != (b_8x8 ? 63 : count_cat_m1[ctx_block_cat]) )
{
- x264_cabac_encode_decision( cb, i_ctx_sig + (b_8x8?significant_coeff_flag_offset[i_last]:i_last), 1 );
+ x264_cabac_encode_decision( cb, i_ctx_sig + (b_8x8?sig_offset[i_last]:i_last), 1 );
x264_cabac_encode_decision( cb, i_ctx_last + (b_8x8?last_coeff_flag_offset_8x8[i_last]:i_last), 1 );
}
x264_cabac_encode_bypass( cb, 0 ); // sign
}
- for( i = i_last-1 ; i >= 0; i-- )
+ for( int i = i_last-1 ; i >= 0; i-- )
{
if( l[i] )
{
i_coeff_abs = abs(l[i]);
- x264_cabac_encode_decision( cb, i_ctx_sig + (b_8x8?significant_coeff_flag_offset[i]:i), 1 );
+ x264_cabac_encode_decision( cb, i_ctx_sig + (b_8x8?sig_offset[i]:i), 1 );
x264_cabac_encode_decision( cb, i_ctx_last + (b_8x8?last_coeff_flag_offset_8x8[i]:i), 0 );
ctx = coeff_abs_level1_ctx[node_ctx] + i_ctx_level;
}
}
else
- x264_cabac_encode_decision( cb, i_ctx_sig + (b_8x8?significant_coeff_flag_offset[i]:i), 0 );
+ x264_cabac_encode_decision( cb, i_ctx_sig + (b_8x8?sig_offset[i]:i), 0 );
}
}
-static void block_residual_write_cabac_8x8( x264_t *h, x264_cabac_t *cb, int16_t *l )
+static void block_residual_write_cabac_8x8( x264_t *h, x264_cabac_t *cb, dctcoef *l )
{
block_residual_write_cabac_internal( h, cb, DCT_LUMA_8x8, l, 1 );
}
-static void block_residual_write_cabac( x264_t *h, x264_cabac_t *cb, int i_ctxBlockCat, int16_t *l )
+static void block_residual_write_cabac( x264_t *h, x264_cabac_t *cb, int ctx_block_cat, dctcoef *l )
{
- block_residual_write_cabac_internal( h, cb, i_ctxBlockCat, l, 0 );
+ block_residual_write_cabac_internal( h, cb, ctx_block_cat, l, 0 );
}
#endif
-#define block_residual_write_cabac_cbf( h, cb, i_ctxBlockCat, i_idx, l, b_intra ) \
-{ \
- int ctxidxinc = x264_cabac_mb_cbf_ctxidxinc( h, i_ctxBlockCat, i_idx, b_intra ); \
+#define block_residual_write_cabac_cbf( h, cb, ctx_block_cat, i_idx, l, b_intra )\
+{\
+ int ctxidxinc = x264_cabac_mb_cbf_ctxidxinc( h, ctx_block_cat, i_idx, b_intra );\
if( h->mb.cache.non_zero_count[x264_scan8[i_idx]] )\
{\
x264_cabac_encode_decision( cb, ctxidxinc, 1 );\
- block_residual_write_cabac( h, cb, i_ctxBlockCat, l ); \
+ block_residual_write_cabac( h, cb, ctx_block_cat, l );\
}\
else\
x264_cabac_encode_decision( cb, ctxidxinc, 0 );\
{
const int i_mb_type = h->mb.i_type;
int i_list;
- int i;
#if !RDO_SKIP_BS
const int i_mb_pos_start = x264_cabac_pos( cb );
i_mb_pos_tex = x264_cabac_pos( cb );
h->stat.frame.i_mv_bits += i_mb_pos_tex - i_mb_pos_start;
- memcpy( cb->p, h->mb.pic.p_fenc[0], 256 );
- cb->p += 256;
- for( i = 0; i < 8; i++ )
- memcpy( cb->p + i*8, h->mb.pic.p_fenc[1] + i*FENC_STRIDE, 8 );
- cb->p += 64;
- for( i = 0; i < 8; i++ )
- memcpy( cb->p + i*8, h->mb.pic.p_fenc[2] + i*FENC_STRIDE, 8 );
- cb->p += 64;
-
- cb->i_low = 0;
- cb->i_range = 0x01FE;
- cb->i_queue = -1;
- cb->i_bytes_outstanding = 0;
-
- /* if PCM is chosen, we need to store reconstructed frame data */
- h->mc.copy[PIXEL_16x16]( h->mb.pic.p_fdec[0], FDEC_STRIDE, h->mb.pic.p_fenc[0], FENC_STRIDE, 16 );
- h->mc.copy[PIXEL_8x8] ( h->mb.pic.p_fdec[1], FDEC_STRIDE, h->mb.pic.p_fenc[1], FENC_STRIDE, 8 );
- h->mc.copy[PIXEL_8x8] ( h->mb.pic.p_fdec[2], FDEC_STRIDE, h->mb.pic.p_fenc[2], FENC_STRIDE, 8 );
+ bs_t s;
+ bs_init( &s, cb->p, cb->p_end - cb->p );
+
+ for( int i = 0; i < 256; i++ )
+ bs_write( &s, BIT_DEPTH, h->mb.pic.p_fenc[0][i] );
+ for( int ch = 1; ch < 3; ch++ )
+ for( int i = 0; i < 8; i++ )
+ for( int j = 0; j < 8; j++ )
+ bs_write( &s, BIT_DEPTH, h->mb.pic.p_fenc[ch][i*FENC_STRIDE+j] );
+
+ bs_flush( &s );
+ cb->p = s.p;
+ x264_cabac_encode_init_core( cb );
h->stat.frame.i_tex_bits += x264_cabac_pos( cb ) - i_mb_pos_tex;
return;
if( i_mb_type != I_16x16 )
{
int di = h->mb.b_transform_8x8 ? 4 : 1;
- for( i = 0; i < 16; i += di )
+ for( int i = 0; i < 16; i += di )
{
const int i_pred = x264_mb_predict_intra4x4_mode( h, i );
const int i_mode = x264_mb_pred_mode4x4_fix( h->mb.cache.intra4x4_pred_mode[x264_scan8[i]] );
x264_cabac_mb_mvd( h, cb, 0, 0, 4, 2 );
x264_cabac_mb_mvd( h, cb, 0, 8, 4, 2 );
}
- else if( h->mb.i_partition == D_8x16 )
+ else //if( h->mb.i_partition == D_8x16 )
{
if( h->mb.pic.i_fref[0] > 1 )
{
else if( i_mb_type == P_8x8 )
{
/* sub mb type */
- for( i = 0; i < 4; i++ )
+ for( int i = 0; i < 4; i++ )
x264_cabac_mb_sub_p_partition( cb, h->mb.i_sub_partition[i] );
/* ref 0 */
x264_cabac_mb_ref( h, cb, 0, 12 );
}
- for( i = 0; i < 4; i++ )
- x264_cabac_mb8x8_mvd( h, cb, 0, i );
+ for( int i = 0; i < 4; i++ )
+ x264_cabac_mb8x8_mvd( h, cb, i );
}
else if( i_mb_type == B_8x8 )
{
/* sub mb type */
- for( i = 0; i < 4; i++ )
+ for( int i = 0; i < 4; i++ )
x264_cabac_mb_sub_b_partition( cb, h->mb.i_sub_partition[i] );
/* ref */
- for( i_list = 0; i_list < 2; i_list++ )
- {
- if( h->mb.pic.i_fref[i_list] == 1 )
- continue;
- for( i = 0; i < 4; i++ )
- if( x264_mb_partition_listX_table[i_list][ h->mb.i_sub_partition[i] ] )
- x264_cabac_mb_ref( h, cb, i_list, 4*i );
- }
-
- for( i = 0; i < 4; i++ )
- x264_cabac_mb8x8_mvd( h, cb, 0, i );
- for( i = 0; i < 4; i++ )
- x264_cabac_mb8x8_mvd( h, cb, 1, i );
+ if( h->mb.pic.i_fref[0] > 1 )
+ for( int i = 0; i < 4; i++ )
+ if( x264_mb_partition_listX_table[0][ h->mb.i_sub_partition[i] ] )
+ x264_cabac_mb_ref( h, cb, 0, 4*i );
+
+ if( h->mb.pic.i_fref[1] > 1 )
+ for( int i = 0; i < 4; i++ )
+ if( x264_mb_partition_listX_table[1][ h->mb.i_sub_partition[i] ] )
+ x264_cabac_mb_ref( h, cb, 1, 4*i );
+
+ for( int i = 0; i < 4; i++ )
+ if( x264_mb_partition_listX_table[0][ h->mb.i_sub_partition[i] ] )
+ x264_cabac_mb_mvd( h, cb, 0, 4*i, 2, 2 );
+
+ for( int i = 0; i < 4; i++ )
+ if( x264_mb_partition_listX_table[1][ h->mb.i_sub_partition[i] ] )
+ x264_cabac_mb_mvd( h, cb, 1, 4*i, 2, 2 );
}
else if( i_mb_type != B_DIRECT )
{
/* All B mode */
const uint8_t (*b_list)[2] = x264_mb_type_list_table[i_mb_type];
-
- for( i_list = 0; i_list < 2; i_list++ )
+ if( h->mb.pic.i_fref[0] > 1 )
{
- const int i_ref_max = h->mb.pic.i_fref[i_list];
-
- if( i_ref_max > 1 )
- {
- if( h->mb.i_partition == D_16x16 )
- {
- if( b_list[i_list][0] ) x264_cabac_mb_ref( h, cb, i_list, 0 );
- }
- else if( h->mb.i_partition == D_16x8 )
- {
- if( b_list[i_list][0] ) x264_cabac_mb_ref( h, cb, i_list, 0 );
- if( b_list[i_list][1] ) x264_cabac_mb_ref( h, cb, i_list, 8 );
- }
- else if( h->mb.i_partition == D_8x16 )
- {
- if( b_list[i_list][0] ) x264_cabac_mb_ref( h, cb, i_list, 0 );
- if( b_list[i_list][1] ) x264_cabac_mb_ref( h, cb, i_list, 4 );
- }
- }
+ if( b_list[0][0] )
+ x264_cabac_mb_ref( h, cb, 0, 0 );
+ if( b_list[0][1] && h->mb.i_partition != D_16x16 )
+ x264_cabac_mb_ref( h, cb, 0, 8 >> (h->mb.i_partition == D_8x16) );
+ }
+ if( h->mb.pic.i_fref[1] > 1 )
+ {
+ if( b_list[1][0] )
+ x264_cabac_mb_ref( h, cb, 1, 0 );
+ if( b_list[1][1] && h->mb.i_partition != D_16x16 )
+ x264_cabac_mb_ref( h, cb, 1, 8 >> (h->mb.i_partition == D_8x16) );
}
for( i_list = 0; i_list < 2; i_list++ )
{
if( b_list[i_list][0] ) x264_cabac_mb_mvd( h, cb, i_list, 0, 4, 2 );
if( b_list[i_list][1] ) x264_cabac_mb_mvd( h, cb, i_list, 8, 4, 2 );
}
- else if( h->mb.i_partition == D_8x16 )
+ else //if( h->mb.i_partition == D_8x16 )
{
if( b_list[i_list][0] ) x264_cabac_mb_mvd( h, cb, i_list, 0, 2, 4 );
if( b_list[i_list][1] ) x264_cabac_mb_mvd( h, cb, i_list, 4, 2, 4 );
/* AC Luma */
if( h->mb.i_cbp_luma != 0 )
- for( i = 0; i < 16; i++ )
+ for( int i = 0; i < 16; i++ )
block_residual_write_cabac_cbf( h, cb, DCT_LUMA_AC, i, h->dct.luma4x4[i]+1, 1 );
}
else if( h->mb.b_transform_8x8 )
{
- for( i = 0; i < 4; i++ )
+ for( int i = 0; i < 4; i++ )
if( h->mb.i_cbp_luma & ( 1 << i ) )
block_residual_write_cabac_8x8( h, cb, h->dct.luma8x8[i] );
}
else
{
- for( i = 0; i < 16; i++ )
- if( h->mb.i_cbp_luma & ( 1 << ( i / 4 ) ) )
+ for( int i = 0; i < 16; i++ )
+ if( h->mb.i_cbp_luma & ( 1 << ( i >> 2 ) ) )
block_residual_write_cabac_cbf( h, cb, DCT_LUMA_4x4, i, h->dct.luma4x4[i], b_intra );
}
- if( h->mb.i_cbp_chroma&0x03 ) /* Chroma DC residual present */
+ if( h->mb.i_cbp_chroma ) /* Chroma DC residual present */
{
block_residual_write_cabac_cbf( h, cb, DCT_CHROMA_DC, 25, h->dct.chroma_dc[0], b_intra );
block_residual_write_cabac_cbf( h, cb, DCT_CHROMA_DC, 26, h->dct.chroma_dc[1], b_intra );
- }
- if( h->mb.i_cbp_chroma&0x02 ) /* Chroma AC residual present */
- {
- for( i = 16; i < 24; i++ )
- block_residual_write_cabac_cbf( h, cb, DCT_CHROMA_AC, i, h->dct.luma4x4[i]+1, b_intra );
+ if( h->mb.i_cbp_chroma&0x02 ) /* Chroma AC residual present */
+ for( int i = 16; i < 24; i++ )
+ block_residual_write_cabac_cbf( h, cb, DCT_CHROMA_AC, i, h->dct.luma4x4[i]+1, b_intra );
}
}
/*****************************************************************************
* RD only; doesn't generate a valid bitstream
* doesn't write cbp or chroma dc (I don't know how much this matters)
- * doesn't write ref or subpartition (never varies between calls, so no point in doing so)
+ * doesn't write ref (never varies between calls, so no point in doing so)
+ * only writes subpartition for p8x8, needed for sub-8x8 mode decision RDO
* works on all partition sizes except 16x16
- * for sub8x8, call once per 8x8 block
*****************************************************************************/
static void x264_partition_size_cabac( x264_t *h, x264_cabac_t *cb, int i8, int i_pixel )
{
const int i_mb_type = h->mb.i_type;
int b_8x16 = h->mb.i_partition == D_8x16;
- int j;
if( i_mb_type == P_8x8 )
- x264_cabac_mb8x8_mvd( h, cb, 0, i8 );
- else if( i_mb_type == P_L0 )
{
- x264_cabac_mb_mvd( h, cb, 0, 4*i8, 4>>b_8x16, 2<<b_8x16 );
+ x264_cabac_mb8x8_mvd( h, cb, i8 );
+ x264_cabac_mb_sub_p_partition( cb, h->mb.i_sub_partition[i8] );
}
+ else if( i_mb_type == P_L0 )
+ x264_cabac_mb_mvd( h, cb, 0, 4*i8, 4>>b_8x16, 2<<b_8x16 );
else if( i_mb_type > B_DIRECT && i_mb_type < B_8x8 )
{
if( x264_mb_type_list_table[ i_mb_type ][0][!!i8] ) x264_cabac_mb_mvd( h, cb, 0, 4*i8, 4>>b_8x16, 2<<b_8x16 );
}
else //if( i_mb_type == B_8x8 )
{
- x264_cabac_mb8x8_mvd( h, cb, 0, i8 );
- x264_cabac_mb8x8_mvd( h, cb, 1, i8 );
+ if( x264_mb_partition_listX_table[0][ h->mb.i_sub_partition[i8] ] )
+ x264_cabac_mb_mvd( h, cb, 0, 4*i8, 2, 2 );
+ if( x264_mb_partition_listX_table[1][ h->mb.i_sub_partition[i8] ] )
+ x264_cabac_mb_mvd( h, cb, 1, 4*i8, 2, 2 );
}
- for( j = (i_pixel < PIXEL_8x8); j >= 0; j-- )
+ for( int j = (i_pixel < PIXEL_8x8); j >= 0; j-- )
{
if( h->mb.i_cbp_luma & (1 << i8) )
{
if( h->mb.b_transform_8x8 )
block_residual_write_cabac_8x8( h, cb, h->dct.luma8x8[i8] );
else
- {
- int i4;
- for( i4 = 0; i4 < 4; i4++ )
+ for( int i4 = 0; i4 < 4; i4++ )
block_residual_write_cabac_cbf( h, cb, DCT_LUMA_4x4, i4+i8*4, h->dct.luma4x4[i4+i8*4], 0 );
- }
}
block_residual_write_cabac_cbf( h, cb, DCT_CHROMA_AC, 16+i8, h->dct.luma4x4[16+i8]+1, 0 );
block_residual_write_cabac_cbf( h, cb, DCT_CHROMA_DC, 26, h->dct.chroma_dc[1], 1 );
if( h->mb.i_cbp_chroma == 2 )
- {
- int i;
- for( i = 16; i < 24; i++ )
+ for( int i = 16; i < 24; i++ )
block_residual_write_cabac_cbf( h, cb, DCT_CHROMA_AC, i, h->dct.luma4x4[i]+1, 1 );
- }
}
}
#endif
projects / x264 / blobdiff