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authorMichael Niedermayer <michaelni@gmx.at>2012-01-14 02:22:09 +0100
committerMichael Niedermayer <michaelni@gmx.at>2012-01-14 02:22:09 +0100
commite986a5d10d95b62cd85aaefc7d4da34699fbedeb (patch)
tree38dddca2b4582111bcf1bcb6be2d1c6193300f2d /libavcodec/cabac.h
parent36397ea1c7e27ab850149cc61394c2baa26dd532 (diff)
parent68d6012c723bb520daac5336dcb046c0a5dd3826 (diff)
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Merge remote-tracking branch 'qatar/master'
* qatar/master: FATE: add tests for targa ARM: fix Thumb-mode simple_idct_arm ARM: 4-byte align start of all asm functions rgb2rgb: rgb12to15() swscale-test: fix stack overread. swscale: fix invalid conversions and memory problems. cabac: split cabac.h into declarations and function definitions cabac: Mark ff_h264_mps_state array as static, it is only used within cabac.c. cabac: Remove ff_h264_lps_state array. Conflicts: libswscale/rgb2rgb.h libswscale/swscale_unscaled.c tests/fate/image.mak Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/cabac.h')
-rw-r--r--libavcodec/cabac.h133
1 files changed, 1 insertions, 132 deletions
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 */