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-rw-r--r--libavcodec/arm/asm.S1
-rw-r--r--libavcodec/arm/simple_idct_arm.S2
-rw-r--r--libavcodec/cabac.c11
-rw-r--r--libavcodec/cabac.h133
-rw-r--r--libavcodec/cabac_functions.h160
-rw-r--r--libavcodec/h264.c4
-rw-r--r--libavcodec/h264_cabac.c4
7 files changed, 173 insertions, 142 deletions
diff --git a/libavcodec/arm/asm.S b/libavcodec/arm/asm.S
index d2d9677fd8..e540eac9fa 100644
--- a/libavcodec/arm/asm.S
+++ b/libavcodec/arm/asm.S
@@ -68,6 +68,7 @@ ELF .size \name, . - \name
.purgem endfunc
.endm
.text
+ .align 2
.if \export
.global EXTERN_ASM\name
EXTERN_ASM\name:
diff --git a/libavcodec/arm/simple_idct_arm.S b/libavcodec/arm/simple_idct_arm.S
index 4d6d3fb5ad..1d3e9175cc 100644
--- a/libavcodec/arm/simple_idct_arm.S
+++ b/libavcodec/arm/simple_idct_arm.S
@@ -491,8 +491,8 @@ __end_bef_a_evaluation:
bal __end_a_evaluation
-__constant_ptr__: @@ see #defines at the beginning of the source code for values.
.align
+__constant_ptr__: @@ see #defines at the beginning of the source code for values.
.word W1
.word W2
.word W3
diff --git a/libavcodec/cabac.c b/libavcodec/cabac.c
index 6cabfb9e73..34ff40c44b 100644
--- a/libavcodec/cabac.c
+++ b/libavcodec/cabac.c
@@ -29,6 +29,7 @@
#include "libavutil/common.h"
#include "get_bits.h"
#include "cabac.h"
+#include "cabac_functions.h"
static const uint8_t lps_range[64][4]= {
{128,176,208,240}, {128,167,197,227}, {128,158,187,216}, {123,150,178,205},
@@ -51,8 +52,7 @@ static const uint8_t lps_range[64][4]= {
uint8_t ff_h264_mlps_state[4*64];
uint8_t ff_h264_lps_range[4*2*64];
-uint8_t ff_h264_lps_state[2*64];
-uint8_t ff_h264_mps_state[2*64];
+static uint8_t h264_mps_state[2 * 64];
static const uint8_t mps_state[64]= {
1, 2, 3, 4, 5, 6, 7, 8,
@@ -141,9 +141,9 @@ void ff_init_cabac_states(CABACContext *c){
}
ff_h264_mlps_state[128+2*i+0]=
- ff_h264_mps_state[2*i+0]= 2*mps_state[i]+0;
+ h264_mps_state[2 * i + 0] = 2 * mps_state[i] + 0;
ff_h264_mlps_state[128+2*i+1]=
- ff_h264_mps_state[2*i+1]= 2*mps_state[i]+1;
+ h264_mps_state[2 * i + 1] = 2 * mps_state[i] + 1;
if( i ){
ff_h264_lps_state[2*i+0]=
@@ -196,11 +196,10 @@ static void put_cabac(CABACContext *c, uint8_t * const state, int bit){
if(bit == ((*state)&1)){
c->range -= RangeLPS;
- *state= ff_h264_mps_state[*state];
+ *state = h264_mps_state[*state];
}else{
c->low += c->range - RangeLPS;
c->range = RangeLPS;
- *state= ff_h264_lps_state[*state];
}
renorm_cabac_encoder(c);
diff --git a/libavcodec/cabac.h b/libavcodec/cabac.h
index 8065ae0f45..667489ede8 100644
--- a/libavcodec/cabac.h
+++ b/libavcodec/cabac.h
@@ -27,13 +27,10 @@
#ifndef AVCODEC_CABAC_H
#define AVCODEC_CABAC_H
-#include <stddef.h>
+#include <stdint.h>
#include "put_bits.h"
-//#undef NDEBUG
-#include <assert.h>
-
#define CABAC_BITS 16
#define CABAC_MASK ((1<<CABAC_BITS)-1)
@@ -47,136 +44,8 @@ typedef struct CABACContext{
PutBitContext pb;
}CABACContext;
-extern uint8_t ff_h264_mlps_state[4*64];
-extern uint8_t ff_h264_lps_range[4*2*64]; ///< rangeTabLPS
-extern uint8_t ff_h264_mps_state[2*64]; ///< transIdxMPS
-extern uint8_t ff_h264_lps_state[2*64]; ///< transIdxLPS
-extern const uint8_t ff_h264_norm_shift[512];
-
-#if ARCH_X86
-# include "x86/cabac.h"
-#endif
-
void ff_init_cabac_encoder(CABACContext *c, uint8_t *buf, int buf_size);
void ff_init_cabac_decoder(CABACContext *c, const uint8_t *buf, int buf_size);
void ff_init_cabac_states(CABACContext *c);
-
-static void refill(CABACContext *c){
-#if CABAC_BITS == 16
- c->low+= (c->bytestream[0]<<9) + (c->bytestream[1]<<1);
-#else
- c->low+= c->bytestream[0]<<1;
-#endif
- c->low -= CABAC_MASK;
- c->bytestream+= CABAC_BITS/8;
-}
-
-static inline void renorm_cabac_decoder_once(CABACContext *c){
- int shift= (uint32_t)(c->range - 0x100)>>31;
- c->range<<= shift;
- c->low <<= shift;
- if(!(c->low & CABAC_MASK))
- refill(c);
-}
-
-#ifndef get_cabac_inline
-static void refill2(CABACContext *c){
- int i, x;
-
- x= c->low ^ (c->low-1);
- i= 7 - ff_h264_norm_shift[x>>(CABAC_BITS-1)];
-
- x= -CABAC_MASK;
-
-#if CABAC_BITS == 16
- x+= (c->bytestream[0]<<9) + (c->bytestream[1]<<1);
-#else
- x+= c->bytestream[0]<<1;
-#endif
-
- c->low += x<<i;
- c->bytestream+= CABAC_BITS/8;
-}
-
-static av_always_inline int get_cabac_inline(CABACContext *c, uint8_t * const state){
- int s = *state;
- int RangeLPS= ff_h264_lps_range[2*(c->range&0xC0) + s];
- int bit, lps_mask;
-
- c->range -= RangeLPS;
- lps_mask= ((c->range<<(CABAC_BITS+1)) - c->low)>>31;
-
- c->low -= (c->range<<(CABAC_BITS+1)) & lps_mask;
- c->range += (RangeLPS - c->range) & lps_mask;
-
- s^=lps_mask;
- *state= (ff_h264_mlps_state+128)[s];
- bit= s&1;
-
- lps_mask= ff_h264_norm_shift[c->range];
- c->range<<= lps_mask;
- c->low <<= lps_mask;
- if(!(c->low & CABAC_MASK))
- refill2(c);
- return bit;
-}
-#endif
-
-static int av_noinline av_unused get_cabac_noinline(CABACContext *c, uint8_t * const state){
- return get_cabac_inline(c,state);
-}
-
-static int av_unused get_cabac(CABACContext *c, uint8_t * const state){
- return get_cabac_inline(c,state);
-}
-
-static int av_unused get_cabac_bypass(CABACContext *c){
- int range;
- c->low += c->low;
-
- if(!(c->low & CABAC_MASK))
- refill(c);
-
- range= c->range<<(CABAC_BITS+1);
- if(c->low < range){
- return 0;
- }else{
- c->low -= range;
- return 1;
- }
-}
-
-
-#ifndef get_cabac_bypass_sign
-static av_always_inline int get_cabac_bypass_sign(CABACContext *c, int val){
- int range, mask;
- c->low += c->low;
-
- if(!(c->low & CABAC_MASK))
- refill(c);
-
- range= c->range<<(CABAC_BITS+1);
- c->low -= range;
- mask= c->low >> 31;
- range &= mask;
- c->low += range;
- return (val^mask)-mask;
-}
-#endif
-
-/**
- *
- * @return the number of bytes read or 0 if no end
- */
-static int av_unused get_cabac_terminate(CABACContext *c){
- c->range -= 2;
- if(c->low < c->range<<(CABAC_BITS+1)){
- renorm_cabac_decoder_once(c);
- return 0;
- }else{
- return c->bytestream - c->bytestream_start;
- }
-}
-
#endif /* AVCODEC_CABAC_H */
diff --git a/libavcodec/cabac_functions.h b/libavcodec/cabac_functions.h
new file mode 100644
index 0000000000..b150aabcc4
--- /dev/null
+++ b/libavcodec/cabac_functions.h
@@ -0,0 +1,160 @@
+/*
+ * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
+ * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * Context Adaptive Binary Arithmetic Coder inline functions
+ */
+
+#ifndef AVCODEC_CABAC_FUNCTIONS_H
+#define AVCODEC_CABAC_FUNCTIONS_H
+
+#include <stdint.h>
+
+#include "cabac.h"
+#include "config.h"
+
+#if ARCH_X86
+# include "x86/cabac.h"
+#endif
+
+extern const uint8_t ff_h264_norm_shift[512];
+extern uint8_t ff_h264_mlps_state[4*64];
+extern uint8_t ff_h264_lps_range[4*2*64]; ///< rangeTabLPS
+
+static void refill(CABACContext *c){
+#if CABAC_BITS == 16
+ c->low+= (c->bytestream[0]<<9) + (c->bytestream[1]<<1);
+#else
+ c->low+= c->bytestream[0]<<1;
+#endif
+ c->low -= CABAC_MASK;
+ c->bytestream+= CABAC_BITS/8;
+}
+
+static inline void renorm_cabac_decoder_once(CABACContext *c){
+ int shift= (uint32_t)(c->range - 0x100)>>31;
+ c->range<<= shift;
+ c->low <<= shift;
+ if(!(c->low & CABAC_MASK))
+ refill(c);
+}
+
+#ifndef get_cabac_inline
+static void refill2(CABACContext *c){
+ int i, x;
+
+ x= c->low ^ (c->low-1);
+ i= 7 - ff_h264_norm_shift[x>>(CABAC_BITS-1)];
+
+ x= -CABAC_MASK;
+
+#if CABAC_BITS == 16
+ x+= (c->bytestream[0]<<9) + (c->bytestream[1]<<1);
+#else
+ x+= c->bytestream[0]<<1;
+#endif
+
+ c->low += x<<i;
+ c->bytestream+= CABAC_BITS/8;
+}
+
+static av_always_inline int get_cabac_inline(CABACContext *c, uint8_t * const state){
+ int s = *state;
+ int RangeLPS= ff_h264_lps_range[2*(c->range&0xC0) + s];
+ int bit, lps_mask;
+
+ c->range -= RangeLPS;
+ lps_mask= ((c->range<<(CABAC_BITS+1)) - c->low)>>31;
+
+ c->low -= (c->range<<(CABAC_BITS+1)) & lps_mask;
+ c->range += (RangeLPS - c->range) & lps_mask;
+
+ s^=lps_mask;
+ *state= (ff_h264_mlps_state+128)[s];
+ bit= s&1;
+
+ lps_mask= ff_h264_norm_shift[c->range];
+ c->range<<= lps_mask;
+ c->low <<= lps_mask;
+ if(!(c->low & CABAC_MASK))
+ refill2(c);
+ return bit;
+}
+#endif
+
+static int av_noinline av_unused get_cabac_noinline(CABACContext *c, uint8_t * const state){
+ return get_cabac_inline(c,state);
+}
+
+static int av_unused get_cabac(CABACContext *c, uint8_t * const state){
+ return get_cabac_inline(c,state);
+}
+
+static int av_unused get_cabac_bypass(CABACContext *c){
+ int range;
+ c->low += c->low;
+
+ if(!(c->low & CABAC_MASK))
+ refill(c);
+
+ range= c->range<<(CABAC_BITS+1);
+ if(c->low < range){
+ return 0;
+ }else{
+ c->low -= range;
+ return 1;
+ }
+}
+
+
+#ifndef get_cabac_bypass_sign
+static av_always_inline int get_cabac_bypass_sign(CABACContext *c, int val){
+ int range, mask;
+ c->low += c->low;
+
+ if(!(c->low & CABAC_MASK))
+ refill(c);
+
+ range= c->range<<(CABAC_BITS+1);
+ c->low -= range;
+ mask= c->low >> 31;
+ range &= mask;
+ c->low += range;
+ return (val^mask)-mask;
+}
+#endif
+
+/**
+ *
+ * @return the number of bytes read or 0 if no end
+ */
+static int av_unused get_cabac_terminate(CABACContext *c){
+ c->range -= 2;
+ if(c->low < c->range<<(CABAC_BITS+1)){
+ renorm_cabac_decoder_once(c);
+ return 0;
+ }else{
+ return c->bytestream - c->bytestream_start;
+ }
+}
+
+#endif /* AVCODEC_CABAC_FUNCTIONS_H */
diff --git a/libavcodec/h264.c b/libavcodec/h264.c
index 98eac17f66..b65fdeb5e3 100644
--- a/libavcodec/h264.c
+++ b/libavcodec/h264.c
@@ -30,6 +30,8 @@
#include "libavutil/imgutils.h"
#include "libavutil/opt.h"
#include "internal.h"
+#include "cabac.h"
+#include "cabac_functions.h"
#include "dsputil.h"
#include "avcodec.h"
#include "mpegvideo.h"
@@ -43,8 +45,6 @@
#include "vdpau_internal.h"
#include "libavutil/avassert.h"
-#include "cabac.h"
-
//#undef NDEBUG
#include <assert.h>
diff --git a/libavcodec/h264_cabac.c b/libavcodec/h264_cabac.c
index 4ba84a69cb..cde569bc08 100644
--- a/libavcodec/h264_cabac.c
+++ b/libavcodec/h264_cabac.c
@@ -28,6 +28,9 @@
#define CABAC 1
#define UNCHECKED_BITSTREAM_READER 1
+#include "config.h"
+#include "cabac.h"
+#include "cabac_functions.h"
#include "internal.h"
#include "dsputil.h"
#include "avcodec.h"
@@ -36,7 +39,6 @@
#include "h264_mvpred.h"
#include "golomb.h"
-#include "cabac.h"
#if ARCH_X86
#include "x86/h264_i386.h"
#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-11 23:05:09 +0000