x264 source for verification 2026-05-22

2026-05-22 16:45:04 +08:00
commit 4647f166e5
270 changed files with 166522 additions and 0 deletions
--- a/common/cabac.h
+++ b/common/cabac.h
@@ -0,0 +1,126 @@
+/*****************************************************************************
+ * cabac.h: arithmetic coder
+ *****************************************************************************
+ * Copyright (C) 2003-2025 x264 project
+ *
+ * Authors: Loren Merritt <lorenm@u.washington.edu>
+ *          Laurent Aimar <fenrir@via.ecp.fr>
+ *
+ * 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
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * 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.
+ *****************************************************************************/
+
+#ifndef X264_CABAC_H
+#define X264_CABAC_H
+
+typedef struct
+{
+    /* state */
+    int i_low;
+    int i_range;
+
+    /* bit stream */
+    int i_queue; //stored with an offset of -8 for faster asm
+    int i_bytes_outstanding;
+
+    uint8_t *p_start;
+    uint8_t *p;
+    uint8_t *p_end;
+
+    /* aligned for memcpy_aligned starting here */
+    ALIGNED_64( int f8_bits_encoded ); // only if using x264_cabac_size_decision()
+
+    /* context */
+    uint8_t state[1024];
+
+    /* for 16-byte alignment */
+    uint8_t padding[12];
+} x264_cabac_t;
+
+/* init the contexts given i_slice_type, the quantif and the model */
+#define x264_cabac_context_init x264_template(cabac_context_init)
+void x264_cabac_context_init( x264_t *h, x264_cabac_t *cb, int i_slice_type, int i_qp, int i_model );
+
+#define x264_cabac_encode_init_core x264_template(cabac_encode_init_core)
+void x264_cabac_encode_init_core( x264_cabac_t *cb );
+#define x264_cabac_encode_init x264_template(cabac_encode_init)
+void x264_cabac_encode_init( x264_cabac_t *cb, uint8_t *p_data, uint8_t *p_end );
+#define x264_cabac_encode_decision_c x264_template(cabac_encode_decision_c)
+void x264_cabac_encode_decision_c( x264_cabac_t *cb, int i_ctx, int b );
+#define x264_cabac_encode_decision_asm x264_template(cabac_encode_decision_asm)
+void x264_cabac_encode_decision_asm( x264_cabac_t *cb, int i_ctx, int b );
+#define x264_cabac_encode_bypass_c x264_template(cabac_encode_bypass_c)
+void x264_cabac_encode_bypass_c( x264_cabac_t *cb, int b );
+#define x264_cabac_encode_bypass_asm x264_template(cabac_encode_bypass_asm)
+void x264_cabac_encode_bypass_asm( x264_cabac_t *cb, int b );
+#define x264_cabac_encode_terminal_c x264_template(cabac_encode_terminal_c)
+void x264_cabac_encode_terminal_c( x264_cabac_t *cb );
+#define x264_cabac_encode_terminal_asm x264_template(cabac_encode_terminal_asm)
+void x264_cabac_encode_terminal_asm( x264_cabac_t *cb );
+#define x264_cabac_encode_ue_bypass x264_template(cabac_encode_ue_bypass)
+void x264_cabac_encode_ue_bypass( x264_cabac_t *cb, int exp_bits, int val );
+#define x264_cabac_encode_flush x264_template(cabac_encode_flush)
+void x264_cabac_encode_flush( x264_t *h, x264_cabac_t *cb );
+
+#if HAVE_MMX
+#define x264_cabac_encode_decision x264_cabac_encode_decision_asm
+#define x264_cabac_encode_bypass x264_cabac_encode_bypass_asm
+#define x264_cabac_encode_terminal x264_cabac_encode_terminal_asm
+#elif HAVE_AARCH64
+#define x264_cabac_encode_decision x264_cabac_encode_decision_asm
+#define x264_cabac_encode_bypass x264_cabac_encode_bypass_asm
+#define x264_cabac_encode_terminal x264_cabac_encode_terminal_asm
+#else
+#define x264_cabac_encode_decision x264_cabac_encode_decision_c
+#define x264_cabac_encode_bypass x264_cabac_encode_bypass_c
+#define x264_cabac_encode_terminal x264_cabac_encode_terminal_c
+#endif
+#define x264_cabac_encode_decision_noup x264_cabac_encode_decision
+
+static ALWAYS_INLINE int x264_cabac_pos( x264_cabac_t *cb )
+{
+    return (cb->p - cb->p_start + cb->i_bytes_outstanding) * 8 + cb->i_queue;
+}
+
+/* internal only. these don't write the bitstream, just calculate bit cost: */
+
+static ALWAYS_INLINE void x264_cabac_size_decision( x264_cabac_t *cb, long i_ctx, long b )
+{
+    int i_state = cb->state[i_ctx];
+    cb->state[i_ctx] = x264_cabac_transition[i_state][b];
+    cb->f8_bits_encoded += x264_cabac_entropy[i_state^b];
+}
+
+static ALWAYS_INLINE int x264_cabac_size_decision2( uint8_t *state, long b )
+{
+    int i_state = *state;
+    *state = x264_cabac_transition[i_state][b];
+    return x264_cabac_entropy[i_state^b];
+}
+
+static ALWAYS_INLINE void x264_cabac_size_decision_noup( x264_cabac_t *cb, long i_ctx, long b )
+{
+    int i_state = cb->state[i_ctx];
+    cb->f8_bits_encoded += x264_cabac_entropy[i_state^b];
+}
+
+static ALWAYS_INLINE int x264_cabac_size_decision_noup2( uint8_t *state, long b )
+{
+    return x264_cabac_entropy[*state^b];
+}
+
+#endif