#include "libavutil/intreadwrite.h"
#include "avcodec.h"
#include "dsputil.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "bytestream.h"
//#undef NDEBUG
#include "avcodec.h"
#include "internal.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "dsputil.h"
#include "lpc.h"
#include "parser.h"
#include "aac_ac3_parser.h"
#include "aac_parser.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "mpeg4audio.h"
#define AAC_HEADER_SIZE 7
#include <stdint.h>
#include "aac_ac3_parser.h"
-#include "bitstream.h"
+#include "get_bits.h"
typedef struct {
uint32_t sample_rate;
***********************************/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "dsputil.h"
#include "mpeg4audio.h"
#include "avcodec.h"
#include "ac3.h"
-#include "bitstream.h"
+#include "get_bits.h"
static uint8_t band_start_tab[51];
static uint8_t bin_to_band_tab[253];
#include "parser.h"
#include "ac3_parser.h"
#include "aac_ac3_parser.h"
-#include "bitstream.h"
+#include "get_bits.h"
#define AC3_HEADER_SIZE 7
#define AVCODEC_AC3_PARSER_H
#include "ac3.h"
-#include "bitstream.h"
+#include "get_bits.h"
/**
* Parses AC-3 frame header.
#include "libavutil/internal.h"
#include "libavutil/lfg.h"
#include "ac3.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "dsputil.h"
/* override ac3.h to include coupling channel */
//#define DEBUG_BITALLOC
#include "libavutil/crc.h"
#include "avcodec.h"
-#include "bitstream.h" // for ff_reverse
+#include "get_bits.h" // for ff_reverse
#include "put_bits.h"
#include "ac3.h"
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "put_bits.h"
#include "bytestream.h"
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "bytestream.h"
#include "unary.h"
#include "mathops.h"
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "put_bits.h"
#include "dsputil.h"
#include "lpc.h"
#define ALT_BITSTREAM_READER_LE
#include "avcodec.h"
#include "dsputil.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "bytestream.h"
/**
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "put_bits.h"
#include "dsputil.h"
#include "mpeg12data.h"
#include <stdio.h>
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "dsputil.h"
#include "bytestream.h"
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
typedef struct {
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "put_bits.h"
const uint8_t ff_log2_run[32]={
+++ /dev/null
-/*
- * copyright (c) 2004 Michael Niedermayer <michaelni@gmx.at>
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg 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.
- *
- * FFmpeg 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 FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-/**
- * @file libavcodec/bitstream.h
- * bitstream api header.
- */
-
-#ifndef AVCODEC_BITSTREAM_H
-#define AVCODEC_BITSTREAM_H
-
-#include <stdint.h>
-#include <stdlib.h>
-#include <assert.h>
-#include "libavutil/bswap.h"
-#include "libavutil/common.h"
-#include "libavutil/intreadwrite.h"
-#include "libavutil/log.h"
-#include "mathops.h"
-
-#if defined(ALT_BITSTREAM_READER_LE) && !defined(ALT_BITSTREAM_READER)
-# define ALT_BITSTREAM_READER
-#endif
-
-#if !defined(LIBMPEG2_BITSTREAM_READER) && !defined(A32_BITSTREAM_READER) && !defined(ALT_BITSTREAM_READER)
-# if ARCH_ARM
-# define A32_BITSTREAM_READER
-# else
-# define ALT_BITSTREAM_READER
-//#define LIBMPEG2_BITSTREAM_READER
-//#define A32_BITSTREAM_READER
-# endif
-#endif
-
-extern const uint8_t ff_reverse[256];
-
-#if ARCH_X86
-// avoid +32 for shift optimization (gcc should do that ...)
-static inline int32_t NEG_SSR32( int32_t a, int8_t s){
- __asm__ ("sarl %1, %0\n\t"
- : "+r" (a)
- : "ic" ((uint8_t)(-s))
- );
- return a;
-}
-static inline uint32_t NEG_USR32(uint32_t a, int8_t s){
- __asm__ ("shrl %1, %0\n\t"
- : "+r" (a)
- : "ic" ((uint8_t)(-s))
- );
- return a;
-}
-#else
-# define NEG_SSR32(a,s) ((( int32_t)(a))>>(32-(s)))
-# define NEG_USR32(a,s) (((uint32_t)(a))>>(32-(s)))
-#endif
-
-/* bit input */
-/* buffer, buffer_end and size_in_bits must be present and used by every reader */
-typedef struct GetBitContext {
- const uint8_t *buffer, *buffer_end;
-#ifdef ALT_BITSTREAM_READER
- int index;
-#elif defined LIBMPEG2_BITSTREAM_READER
- uint8_t *buffer_ptr;
- uint32_t cache;
- int bit_count;
-#elif defined A32_BITSTREAM_READER
- uint32_t *buffer_ptr;
- uint32_t cache0;
- uint32_t cache1;
- int bit_count;
-#endif
- int size_in_bits;
-} GetBitContext;
-
-#define VLC_TYPE int16_t
-
-typedef struct VLC {
- int bits;
- VLC_TYPE (*table)[2]; ///< code, bits
- int table_size, table_allocated;
-} VLC;
-
-typedef struct RL_VLC_ELEM {
- int16_t level;
- int8_t len;
- uint8_t run;
-} RL_VLC_ELEM;
-
-/* Bitstream reader API docs:
-name
- arbitrary name which is used as prefix for the internal variables
-
-gb
- getbitcontext
-
-OPEN_READER(name, gb)
- loads gb into local variables
-
-CLOSE_READER(name, gb)
- stores local vars in gb
-
-UPDATE_CACHE(name, gb)
- refills the internal cache from the bitstream
- after this call at least MIN_CACHE_BITS will be available,
-
-GET_CACHE(name, gb)
- will output the contents of the internal cache, next bit is MSB of 32 or 64 bit (FIXME 64bit)
-
-SHOW_UBITS(name, gb, num)
- will return the next num bits
-
-SHOW_SBITS(name, gb, num)
- will return the next num bits and do sign extension
-
-SKIP_BITS(name, gb, num)
- will skip over the next num bits
- note, this is equivalent to SKIP_CACHE; SKIP_COUNTER
-
-SKIP_CACHE(name, gb, num)
- will remove the next num bits from the cache (note SKIP_COUNTER MUST be called before UPDATE_CACHE / CLOSE_READER)
-
-SKIP_COUNTER(name, gb, num)
- will increment the internal bit counter (see SKIP_CACHE & SKIP_BITS)
-
-LAST_SKIP_CACHE(name, gb, num)
- will remove the next num bits from the cache if it is needed for UPDATE_CACHE otherwise it will do nothing
-
-LAST_SKIP_BITS(name, gb, num)
- is equivalent to SKIP_LAST_CACHE; SKIP_COUNTER
-
-for examples see get_bits, show_bits, skip_bits, get_vlc
-*/
-
-#ifdef ALT_BITSTREAM_READER
-# define MIN_CACHE_BITS 25
-
-# define OPEN_READER(name, gb)\
- int name##_index= (gb)->index;\
- int name##_cache= 0;\
-
-# define CLOSE_READER(name, gb)\
- (gb)->index= name##_index;\
-
-# ifdef ALT_BITSTREAM_READER_LE
-# define UPDATE_CACHE(name, gb)\
- name##_cache= AV_RL32( ((const uint8_t *)(gb)->buffer)+(name##_index>>3) ) >> (name##_index&0x07);\
-
-# define SKIP_CACHE(name, gb, num)\
- name##_cache >>= (num);
-# else
-# define UPDATE_CACHE(name, gb)\
- name##_cache= AV_RB32( ((const uint8_t *)(gb)->buffer)+(name##_index>>3) ) << (name##_index&0x07);\
-
-# define SKIP_CACHE(name, gb, num)\
- name##_cache <<= (num);
-# endif
-
-// FIXME name?
-# define SKIP_COUNTER(name, gb, num)\
- name##_index += (num);\
-
-# define SKIP_BITS(name, gb, num)\
- {\
- SKIP_CACHE(name, gb, num)\
- SKIP_COUNTER(name, gb, num)\
- }\
-
-# define LAST_SKIP_BITS(name, gb, num) SKIP_COUNTER(name, gb, num)
-# define LAST_SKIP_CACHE(name, gb, num) ;
-
-# ifdef ALT_BITSTREAM_READER_LE
-# define SHOW_UBITS(name, gb, num)\
- ((name##_cache) & (NEG_USR32(0xffffffff,num)))
-
-# define SHOW_SBITS(name, gb, num)\
- NEG_SSR32((name##_cache)<<(32-(num)), num)
-# else
-# define SHOW_UBITS(name, gb, num)\
- NEG_USR32(name##_cache, num)
-
-# define SHOW_SBITS(name, gb, num)\
- NEG_SSR32(name##_cache, num)
-# endif
-
-# define GET_CACHE(name, gb)\
- ((uint32_t)name##_cache)
-
-static inline int get_bits_count(GetBitContext *s){
- return s->index;
-}
-
-static inline void skip_bits_long(GetBitContext *s, int n){
- s->index += n;
-}
-
-#elif defined LIBMPEG2_BITSTREAM_READER
-//libmpeg2 like reader
-
-# define MIN_CACHE_BITS 17
-
-# define OPEN_READER(name, gb)\
- int name##_bit_count=(gb)->bit_count;\
- int name##_cache= (gb)->cache;\
- uint8_t * name##_buffer_ptr=(gb)->buffer_ptr;\
-
-# define CLOSE_READER(name, gb)\
- (gb)->bit_count= name##_bit_count;\
- (gb)->cache= name##_cache;\
- (gb)->buffer_ptr= name##_buffer_ptr;\
-
-# define UPDATE_CACHE(name, gb)\
- if(name##_bit_count >= 0){\
- name##_cache+= AV_RB16(name##_buffer_ptr) << name##_bit_count; \
- name##_buffer_ptr+=2;\
- name##_bit_count-= 16;\
- }\
-
-# define SKIP_CACHE(name, gb, num)\
- name##_cache <<= (num);\
-
-# define SKIP_COUNTER(name, gb, num)\
- name##_bit_count += (num);\
-
-# define SKIP_BITS(name, gb, num)\
- {\
- SKIP_CACHE(name, gb, num)\
- SKIP_COUNTER(name, gb, num)\
- }\
-
-# define LAST_SKIP_BITS(name, gb, num) SKIP_BITS(name, gb, num)
-# define LAST_SKIP_CACHE(name, gb, num) SKIP_CACHE(name, gb, num)
-
-# define SHOW_UBITS(name, gb, num)\
- NEG_USR32(name##_cache, num)
-
-# define SHOW_SBITS(name, gb, num)\
- NEG_SSR32(name##_cache, num)
-
-# define GET_CACHE(name, gb)\
- ((uint32_t)name##_cache)
-
-static inline int get_bits_count(GetBitContext *s){
- return (s->buffer_ptr - s->buffer)*8 - 16 + s->bit_count;
-}
-
-static inline void skip_bits_long(GetBitContext *s, int n){
- OPEN_READER(re, s)
- re_bit_count += n;
- re_buffer_ptr += 2*(re_bit_count>>4);
- re_bit_count &= 15;
- re_cache = ((re_buffer_ptr[-2]<<8) + re_buffer_ptr[-1]) << (16+re_bit_count);
- UPDATE_CACHE(re, s)
- CLOSE_READER(re, s)
-}
-
-#elif defined A32_BITSTREAM_READER
-
-# define MIN_CACHE_BITS 32
-
-# define OPEN_READER(name, gb)\
- int name##_bit_count=(gb)->bit_count;\
- uint32_t name##_cache0= (gb)->cache0;\
- uint32_t name##_cache1= (gb)->cache1;\
- uint32_t * name##_buffer_ptr=(gb)->buffer_ptr;\
-
-# define CLOSE_READER(name, gb)\
- (gb)->bit_count= name##_bit_count;\
- (gb)->cache0= name##_cache0;\
- (gb)->cache1= name##_cache1;\
- (gb)->buffer_ptr= name##_buffer_ptr;\
-
-# define UPDATE_CACHE(name, gb)\
- if(name##_bit_count > 0){\
- const uint32_t next= be2me_32( *name##_buffer_ptr );\
- name##_cache0 |= NEG_USR32(next,name##_bit_count);\
- name##_cache1 |= next<<name##_bit_count;\
- name##_buffer_ptr++;\
- name##_bit_count-= 32;\
- }\
-
-#if ARCH_X86
-# define SKIP_CACHE(name, gb, num)\
- __asm__(\
- "shldl %2, %1, %0 \n\t"\
- "shll %2, %1 \n\t"\
- : "+r" (name##_cache0), "+r" (name##_cache1)\
- : "Ic" ((uint8_t)(num))\
- );
-#else
-# define SKIP_CACHE(name, gb, num)\
- name##_cache0 <<= (num);\
- name##_cache0 |= NEG_USR32(name##_cache1,num);\
- name##_cache1 <<= (num);
-#endif
-
-# define SKIP_COUNTER(name, gb, num)\
- name##_bit_count += (num);\
-
-# define SKIP_BITS(name, gb, num)\
- {\
- SKIP_CACHE(name, gb, num)\
- SKIP_COUNTER(name, gb, num)\
- }\
-
-# define LAST_SKIP_BITS(name, gb, num) SKIP_BITS(name, gb, num)
-# define LAST_SKIP_CACHE(name, gb, num) SKIP_CACHE(name, gb, num)
-
-# define SHOW_UBITS(name, gb, num)\
- NEG_USR32(name##_cache0, num)
-
-# define SHOW_SBITS(name, gb, num)\
- NEG_SSR32(name##_cache0, num)
-
-# define GET_CACHE(name, gb)\
- (name##_cache0)
-
-static inline int get_bits_count(GetBitContext *s){
- return ((uint8_t*)s->buffer_ptr - s->buffer)*8 - 32 + s->bit_count;
-}
-
-static inline void skip_bits_long(GetBitContext *s, int n){
- OPEN_READER(re, s)
- re_bit_count += n;
- re_buffer_ptr += re_bit_count>>5;
- re_bit_count &= 31;
- re_cache0 = be2me_32( re_buffer_ptr[-1] ) << re_bit_count;
- re_cache1 = 0;
- UPDATE_CACHE(re, s)
- CLOSE_READER(re, s)
-}
-
-#endif
-
-/**
- * read mpeg1 dc style vlc (sign bit + mantisse with no MSB).
- * if MSB not set it is negative
- * @param n length in bits
- * @author BERO
- */
-static inline int get_xbits(GetBitContext *s, int n){
- register int sign;
- register int32_t cache;
- OPEN_READER(re, s)
- UPDATE_CACHE(re, s)
- cache = GET_CACHE(re,s);
- sign=(~cache)>>31;
- LAST_SKIP_BITS(re, s, n)
- CLOSE_READER(re, s)
- return (NEG_USR32(sign ^ cache, n) ^ sign) - sign;
-}
-
-static inline int get_sbits(GetBitContext *s, int n){
- register int tmp;
- OPEN_READER(re, s)
- UPDATE_CACHE(re, s)
- tmp= SHOW_SBITS(re, s, n);
- LAST_SKIP_BITS(re, s, n)
- CLOSE_READER(re, s)
- return tmp;
-}
-
-/**
- * reads 1-17 bits.
- * Note, the alt bitstream reader can read up to 25 bits, but the libmpeg2 reader can't
- */
-static inline unsigned int get_bits(GetBitContext *s, int n){
- register int tmp;
- OPEN_READER(re, s)
- UPDATE_CACHE(re, s)
- tmp= SHOW_UBITS(re, s, n);
- LAST_SKIP_BITS(re, s, n)
- CLOSE_READER(re, s)
- return tmp;
-}
-
-/**
- * shows 1-17 bits.
- * Note, the alt bitstream reader can read up to 25 bits, but the libmpeg2 reader can't
- */
-static inline unsigned int show_bits(GetBitContext *s, int n){
- register int tmp;
- OPEN_READER(re, s)
- UPDATE_CACHE(re, s)
- tmp= SHOW_UBITS(re, s, n);
-// CLOSE_READER(re, s)
- return tmp;
-}
-
-static inline void skip_bits(GetBitContext *s, int n){
- //Note gcc seems to optimize this to s->index+=n for the ALT_READER :))
- OPEN_READER(re, s)
- UPDATE_CACHE(re, s)
- LAST_SKIP_BITS(re, s, n)
- CLOSE_READER(re, s)
-}
-
-static inline unsigned int get_bits1(GetBitContext *s){
-#ifdef ALT_BITSTREAM_READER
- int index= s->index;
- uint8_t result= s->buffer[ index>>3 ];
-#ifdef ALT_BITSTREAM_READER_LE
- result>>= (index&0x07);
- result&= 1;
-#else
- result<<= (index&0x07);
- result>>= 8 - 1;
-#endif
- index++;
- s->index= index;
-
- return result;
-#else
- return get_bits(s, 1);
-#endif
-}
-
-static inline unsigned int show_bits1(GetBitContext *s){
- return show_bits(s, 1);
-}
-
-static inline void skip_bits1(GetBitContext *s){
- skip_bits(s, 1);
-}
-
-/**
- * reads 0-32 bits.
- */
-static inline unsigned int get_bits_long(GetBitContext *s, int n){
- if(n<=17) return get_bits(s, n);
- else{
-#ifdef ALT_BITSTREAM_READER_LE
- int ret= get_bits(s, 16);
- return ret | (get_bits(s, n-16) << 16);
-#else
- int ret= get_bits(s, 16) << (n-16);
- return ret | get_bits(s, n-16);
-#endif
- }
-}
-
-/**
- * reads 0-32 bits as a signed integer.
- */
-static inline int get_sbits_long(GetBitContext *s, int n) {
- return sign_extend(get_bits_long(s, n), n);
-}
-
-/**
- * shows 0-32 bits.
- */
-static inline unsigned int show_bits_long(GetBitContext *s, int n){
- if(n<=17) return show_bits(s, n);
- else{
- GetBitContext gb= *s;
- return get_bits_long(&gb, n);
- }
-}
-
-static inline int check_marker(GetBitContext *s, const char *msg)
-{
- int bit= get_bits1(s);
- if(!bit)
- av_log(NULL, AV_LOG_INFO, "Marker bit missing %s\n", msg);
-
- return bit;
-}
-
-/**
- * init GetBitContext.
- * @param buffer bitstream buffer, must be FF_INPUT_BUFFER_PADDING_SIZE bytes larger then the actual read bits
- * because some optimized bitstream readers read 32 or 64 bit at once and could read over the end
- * @param bit_size the size of the buffer in bits
- */
-static inline void init_get_bits(GetBitContext *s,
- const uint8_t *buffer, int bit_size)
-{
- int buffer_size= (bit_size+7)>>3;
- if(buffer_size < 0 || bit_size < 0) {
- buffer_size = bit_size = 0;
- buffer = NULL;
- }
-
- s->buffer= buffer;
- s->size_in_bits= bit_size;
- s->buffer_end= buffer + buffer_size;
-#ifdef ALT_BITSTREAM_READER
- s->index=0;
-#elif defined LIBMPEG2_BITSTREAM_READER
- s->buffer_ptr = (uint8_t*)((intptr_t)buffer&(~1));
- s->bit_count = 16 + 8*((intptr_t)buffer&1);
- skip_bits_long(s, 0);
-#elif defined A32_BITSTREAM_READER
- s->buffer_ptr = (uint32_t*)((intptr_t)buffer&(~3));
- s->bit_count = 32 + 8*((intptr_t)buffer&3);
- skip_bits_long(s, 0);
-#endif
-}
-
-static inline void align_get_bits(GetBitContext *s)
-{
- int n= (-get_bits_count(s)) & 7;
- if(n) skip_bits(s, n);
-}
-
-#define init_vlc(vlc, nb_bits, nb_codes,\
- bits, bits_wrap, bits_size,\
- codes, codes_wrap, codes_size,\
- flags)\
- init_vlc_sparse(vlc, nb_bits, nb_codes,\
- bits, bits_wrap, bits_size,\
- codes, codes_wrap, codes_size,\
- NULL, 0, 0, flags)
-
-int init_vlc_sparse(VLC *vlc, int nb_bits, int nb_codes,
- const void *bits, int bits_wrap, int bits_size,
- const void *codes, int codes_wrap, int codes_size,
- const void *symbols, int symbols_wrap, int symbols_size,
- int flags);
-#define INIT_VLC_USE_STATIC 1 ///< VERY strongly deprecated and forbidden
-#define INIT_VLC_LE 2
-#define INIT_VLC_USE_NEW_STATIC 4
-void free_vlc(VLC *vlc);
-
-#define INIT_VLC_STATIC(vlc, bits, a,b,c,d,e,f,g, static_size)\
-{\
- static VLC_TYPE table[static_size][2];\
- (vlc)->table= table;\
- (vlc)->table_allocated= static_size;\
- init_vlc(vlc, bits, a,b,c,d,e,f,g, INIT_VLC_USE_NEW_STATIC);\
-}
-
-
-/**
- *
- * if the vlc code is invalid and max_depth=1 than no bits will be removed
- * if the vlc code is invalid and max_depth>1 than the number of bits removed
- * is undefined
- */
-#define GET_VLC(code, name, gb, table, bits, max_depth)\
-{\
- int n, index, nb_bits;\
-\
- index= SHOW_UBITS(name, gb, bits);\
- code = table[index][0];\
- n = table[index][1];\
-\
- if(max_depth > 1 && n < 0){\
- LAST_SKIP_BITS(name, gb, bits)\
- UPDATE_CACHE(name, gb)\
-\
- nb_bits = -n;\
-\
- index= SHOW_UBITS(name, gb, nb_bits) + code;\
- code = table[index][0];\
- n = table[index][1];\
- if(max_depth > 2 && n < 0){\
- LAST_SKIP_BITS(name, gb, nb_bits)\
- UPDATE_CACHE(name, gb)\
-\
- nb_bits = -n;\
-\
- index= SHOW_UBITS(name, gb, nb_bits) + code;\
- code = table[index][0];\
- n = table[index][1];\
- }\
- }\
- SKIP_BITS(name, gb, n)\
-}
-
-#define GET_RL_VLC(level, run, name, gb, table, bits, max_depth, need_update)\
-{\
- int n, index, nb_bits;\
-\
- index= SHOW_UBITS(name, gb, bits);\
- level = table[index].level;\
- n = table[index].len;\
-\
- if(max_depth > 1 && n < 0){\
- SKIP_BITS(name, gb, bits)\
- if(need_update){\
- UPDATE_CACHE(name, gb)\
- }\
-\
- nb_bits = -n;\
-\
- index= SHOW_UBITS(name, gb, nb_bits) + level;\
- level = table[index].level;\
- n = table[index].len;\
- }\
- run= table[index].run;\
- SKIP_BITS(name, gb, n)\
-}
-
-
-/**
- * parses a vlc code, faster then get_vlc()
- * @param bits is the number of bits which will be read at once, must be
- * identical to nb_bits in init_vlc()
- * @param max_depth is the number of times bits bits must be read to completely
- * read the longest vlc code
- * = (max_vlc_length + bits - 1) / bits
- */
-static av_always_inline int get_vlc2(GetBitContext *s, VLC_TYPE (*table)[2],
- int bits, int max_depth)
-{
- int code;
-
- OPEN_READER(re, s)
- UPDATE_CACHE(re, s)
-
- GET_VLC(code, re, s, table, bits, max_depth)
-
- CLOSE_READER(re, s)
- return code;
-}
-
-//#define TRACE
-
-#ifdef TRACE
-static inline void print_bin(int bits, int n){
- int i;
-
- for(i=n-1; i>=0; i--){
- av_log(NULL, AV_LOG_DEBUG, "%d", (bits>>i)&1);
- }
- for(i=n; i<24; i++)
- av_log(NULL, AV_LOG_DEBUG, " ");
-}
-
-static inline int get_bits_trace(GetBitContext *s, int n, char *file, const char *func, int line){
- int r= get_bits(s, n);
-
- print_bin(r, n);
- av_log(NULL, AV_LOG_DEBUG, "%5d %2d %3d bit @%5d in %s %s:%d\n", r, n, r, get_bits_count(s)-n, file, func, line);
- return r;
-}
-static inline int get_vlc_trace(GetBitContext *s, VLC_TYPE (*table)[2], int bits, int max_depth, char *file, const char *func, int line){
- int show= show_bits(s, 24);
- int pos= get_bits_count(s);
- int r= get_vlc2(s, table, bits, max_depth);
- int len= get_bits_count(s) - pos;
- int bits2= show>>(24-len);
-
- print_bin(bits2, len);
-
- av_log(NULL, AV_LOG_DEBUG, "%5d %2d %3d vlc @%5d in %s %s:%d\n", bits2, len, r, pos, file, func, line);
- return r;
-}
-static inline int get_xbits_trace(GetBitContext *s, int n, char *file, const char *func, int line){
- int show= show_bits(s, n);
- int r= get_xbits(s, n);
-
- print_bin(show, n);
- av_log(NULL, AV_LOG_DEBUG, "%5d %2d %3d xbt @%5d in %s %s:%d\n", show, n, r, get_bits_count(s)-n, file, func, line);
- return r;
-}
-
-#define get_bits(s, n) get_bits_trace(s, n, __FILE__, __PRETTY_FUNCTION__, __LINE__)
-#define get_bits1(s) get_bits_trace(s, 1, __FILE__, __PRETTY_FUNCTION__, __LINE__)
-#define get_xbits(s, n) get_xbits_trace(s, n, __FILE__, __PRETTY_FUNCTION__, __LINE__)
-#define get_vlc(s, vlc) get_vlc_trace(s, (vlc)->table, (vlc)->bits, 3, __FILE__, __PRETTY_FUNCTION__, __LINE__)
-#define get_vlc2(s, tab, bits, max) get_vlc_trace(s, tab, bits, max, __FILE__, __PRETTY_FUNCTION__, __LINE__)
-
-#define tprintf(p, ...) av_log(p, AV_LOG_DEBUG, __VA_ARGS__)
-
-#else //TRACE
-#define tprintf(p, ...) {}
-#endif
-
-static inline int decode012(GetBitContext *gb){
- int n;
- n = get_bits1(gb);
- if (n == 0)
- return 0;
- else
- return get_bits1(gb) + 1;
-}
-
-static inline int decode210(GetBitContext *gb){
- if (get_bits1(gb))
- return 0;
- else
- return 2 - get_bits1(gb);
-}
-
-#endif /* AVCODEC_BITSTREAM_H */
#include <string.h>
#include "libavutil/common.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "cabac.h"
static const uint8_t lps_range[64][4]= {
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "golomb.h"
#include "mathops.h"
#include "cavs.h"
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "golomb.h"
#include "cavs.h"
#include "avcodec.h"
#include "dsputil.h"
-#include "bitstream.h"
+#include "get_bits.h"
/* Disable the encoder. */
#undef CONFIG_CLJR_ENCODER
#include "libavutil/lfg.h"
#include "libavutil/random_seed.h"
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "dsputil.h"
#include "bytestream.h"
#include "avcodec.h"
#include "dsputil.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "put_bits.h"
#include "dcadata.h"
#include "dcahuff.h"
//#define DEBUG
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "dnxhddata.h"
#include "dsputil.h"
#define ALT_BITSTREAM_READER
#include "avcodec.h"
#include "dsputil.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "put_bits.h"
#include "simple_idct.h"
#include "dvdata.h"
*/
#include "avcodec.h"
#include "dsputil.h"
-#include "bitstream.h"
+#include "get_bits.h"
//#define DEBUG
//#define DEBUG_PACKET_CONTENTS
*/
#include "avcodec.h"
#include "dsputil.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "colorspace.h"
//#define DEBUG
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "colorspace.h"
#include "dsputil.h"
#include "avcodec.h"
#define ALT_BITSTREAM_READER_LE
-#include "bitstream.h"
+#include "get_bits.h"
#include "bytestream.h"
#include "dsputil.h"
#include "aandcttab.h"
#include "avcodec.h"
#define ALT_BITSTREAM_READER_LE
-#include "bitstream.h"
+#include "get_bits.h"
#include "libavutil/lzo.h"
#define EA_PREAMBLE_SIZE 8
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "dsputil.h"
#include "aandcttab.h"
#include "mpeg12.h"
#include "avcodec.h"
#define ALT_BITSTREAM_READER_LE
-#include "bitstream.h"
+#include "get_bits.h"
typedef union MacroBlock {
uint16_t pixels[4];
* @author Konstantin Shishkov
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "put_bits.h"
#include "faxcompr.h"
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "put_bits.h"
#include "dsputil.h"
#include "rangecoder.h"
#include "libavutil/crc.h"
#include "avcodec.h"
#include "internal.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "bytestream.h"
#include "golomb.h"
#include "flac.h"
#include "libavutil/lls.h"
#include "libavutil/md5.h"
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "dsputil.h"
#include "golomb.h"
#include "lpc.h"
#include <stdlib.h>
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include <zlib.h>
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "huffman.h"
#include "bytestream.h"
#include "dsputil.h"
*/
#include <limits.h>
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "put_bits.h"
/**
#include "avcodec.h"
#include "libavutil/avutil.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "g729.h"
#include "lsp.h"
--- /dev/null
+/*
+ * copyright (c) 2004 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file libavcodec/get_bits.h
+ * bitstream reader API header.
+ */
+
+#ifndef AVCODEC_GET_BITS_H
+#define AVCODEC_GET_BITS_H
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <assert.h>
+#include "libavutil/bswap.h"
+#include "libavutil/common.h"
+#include "libavutil/intreadwrite.h"
+#include "libavutil/log.h"
+#include "mathops.h"
+
+#if defined(ALT_BITSTREAM_READER_LE) && !defined(ALT_BITSTREAM_READER)
+# define ALT_BITSTREAM_READER
+#endif
+
+#if !defined(LIBMPEG2_BITSTREAM_READER) && !defined(A32_BITSTREAM_READER) && !defined(ALT_BITSTREAM_READER)
+# if ARCH_ARM
+# define A32_BITSTREAM_READER
+# else
+# define ALT_BITSTREAM_READER
+//#define LIBMPEG2_BITSTREAM_READER
+//#define A32_BITSTREAM_READER
+# endif
+#endif
+
+extern const uint8_t ff_reverse[256];
+
+#if ARCH_X86
+// avoid +32 for shift optimization (gcc should do that ...)
+static inline int32_t NEG_SSR32( int32_t a, int8_t s){
+ __asm__ ("sarl %1, %0\n\t"
+ : "+r" (a)
+ : "ic" ((uint8_t)(-s))
+ );
+ return a;
+}
+static inline uint32_t NEG_USR32(uint32_t a, int8_t s){
+ __asm__ ("shrl %1, %0\n\t"
+ : "+r" (a)
+ : "ic" ((uint8_t)(-s))
+ );
+ return a;
+}
+#else
+# define NEG_SSR32(a,s) ((( int32_t)(a))>>(32-(s)))
+# define NEG_USR32(a,s) (((uint32_t)(a))>>(32-(s)))
+#endif
+
+/* bit input */
+/* buffer, buffer_end and size_in_bits must be present and used by every reader */
+typedef struct GetBitContext {
+ const uint8_t *buffer, *buffer_end;
+#ifdef ALT_BITSTREAM_READER
+ int index;
+#elif defined LIBMPEG2_BITSTREAM_READER
+ uint8_t *buffer_ptr;
+ uint32_t cache;
+ int bit_count;
+#elif defined A32_BITSTREAM_READER
+ uint32_t *buffer_ptr;
+ uint32_t cache0;
+ uint32_t cache1;
+ int bit_count;
+#endif
+ int size_in_bits;
+} GetBitContext;
+
+#define VLC_TYPE int16_t
+
+typedef struct VLC {
+ int bits;
+ VLC_TYPE (*table)[2]; ///< code, bits
+ int table_size, table_allocated;
+} VLC;
+
+typedef struct RL_VLC_ELEM {
+ int16_t level;
+ int8_t len;
+ uint8_t run;
+} RL_VLC_ELEM;
+
+/* Bitstream reader API docs:
+name
+ arbitrary name which is used as prefix for the internal variables
+
+gb
+ getbitcontext
+
+OPEN_READER(name, gb)
+ loads gb into local variables
+
+CLOSE_READER(name, gb)
+ stores local vars in gb
+
+UPDATE_CACHE(name, gb)
+ refills the internal cache from the bitstream
+ after this call at least MIN_CACHE_BITS will be available,
+
+GET_CACHE(name, gb)
+ will output the contents of the internal cache, next bit is MSB of 32 or 64 bit (FIXME 64bit)
+
+SHOW_UBITS(name, gb, num)
+ will return the next num bits
+
+SHOW_SBITS(name, gb, num)
+ will return the next num bits and do sign extension
+
+SKIP_BITS(name, gb, num)
+ will skip over the next num bits
+ note, this is equivalent to SKIP_CACHE; SKIP_COUNTER
+
+SKIP_CACHE(name, gb, num)
+ will remove the next num bits from the cache (note SKIP_COUNTER MUST be called before UPDATE_CACHE / CLOSE_READER)
+
+SKIP_COUNTER(name, gb, num)
+ will increment the internal bit counter (see SKIP_CACHE & SKIP_BITS)
+
+LAST_SKIP_CACHE(name, gb, num)
+ will remove the next num bits from the cache if it is needed for UPDATE_CACHE otherwise it will do nothing
+
+LAST_SKIP_BITS(name, gb, num)
+ is equivalent to SKIP_LAST_CACHE; SKIP_COUNTER
+
+for examples see get_bits, show_bits, skip_bits, get_vlc
+*/
+
+#ifdef ALT_BITSTREAM_READER
+# define MIN_CACHE_BITS 25
+
+# define OPEN_READER(name, gb)\
+ int name##_index= (gb)->index;\
+ int name##_cache= 0;\
+
+# define CLOSE_READER(name, gb)\
+ (gb)->index= name##_index;\
+
+# ifdef ALT_BITSTREAM_READER_LE
+# define UPDATE_CACHE(name, gb)\
+ name##_cache= AV_RL32( ((const uint8_t *)(gb)->buffer)+(name##_index>>3) ) >> (name##_index&0x07);\
+
+# define SKIP_CACHE(name, gb, num)\
+ name##_cache >>= (num);
+# else
+# define UPDATE_CACHE(name, gb)\
+ name##_cache= AV_RB32( ((const uint8_t *)(gb)->buffer)+(name##_index>>3) ) << (name##_index&0x07);\
+
+# define SKIP_CACHE(name, gb, num)\
+ name##_cache <<= (num);
+# endif
+
+// FIXME name?
+# define SKIP_COUNTER(name, gb, num)\
+ name##_index += (num);\
+
+# define SKIP_BITS(name, gb, num)\
+ {\
+ SKIP_CACHE(name, gb, num)\
+ SKIP_COUNTER(name, gb, num)\
+ }\
+
+# define LAST_SKIP_BITS(name, gb, num) SKIP_COUNTER(name, gb, num)
+# define LAST_SKIP_CACHE(name, gb, num) ;
+
+# ifdef ALT_BITSTREAM_READER_LE
+# define SHOW_UBITS(name, gb, num)\
+ ((name##_cache) & (NEG_USR32(0xffffffff,num)))
+
+# define SHOW_SBITS(name, gb, num)\
+ NEG_SSR32((name##_cache)<<(32-(num)), num)
+# else
+# define SHOW_UBITS(name, gb, num)\
+ NEG_USR32(name##_cache, num)
+
+# define SHOW_SBITS(name, gb, num)\
+ NEG_SSR32(name##_cache, num)
+# endif
+
+# define GET_CACHE(name, gb)\
+ ((uint32_t)name##_cache)
+
+static inline int get_bits_count(GetBitContext *s){
+ return s->index;
+}
+
+static inline void skip_bits_long(GetBitContext *s, int n){
+ s->index += n;
+}
+
+#elif defined LIBMPEG2_BITSTREAM_READER
+//libmpeg2 like reader
+
+# define MIN_CACHE_BITS 17
+
+# define OPEN_READER(name, gb)\
+ int name##_bit_count=(gb)->bit_count;\
+ int name##_cache= (gb)->cache;\
+ uint8_t * name##_buffer_ptr=(gb)->buffer_ptr;\
+
+# define CLOSE_READER(name, gb)\
+ (gb)->bit_count= name##_bit_count;\
+ (gb)->cache= name##_cache;\
+ (gb)->buffer_ptr= name##_buffer_ptr;\
+
+# define UPDATE_CACHE(name, gb)\
+ if(name##_bit_count >= 0){\
+ name##_cache+= AV_RB16(name##_buffer_ptr) << name##_bit_count; \
+ name##_buffer_ptr+=2;\
+ name##_bit_count-= 16;\
+ }\
+
+# define SKIP_CACHE(name, gb, num)\
+ name##_cache <<= (num);\
+
+# define SKIP_COUNTER(name, gb, num)\
+ name##_bit_count += (num);\
+
+# define SKIP_BITS(name, gb, num)\
+ {\
+ SKIP_CACHE(name, gb, num)\
+ SKIP_COUNTER(name, gb, num)\
+ }\
+
+# define LAST_SKIP_BITS(name, gb, num) SKIP_BITS(name, gb, num)
+# define LAST_SKIP_CACHE(name, gb, num) SKIP_CACHE(name, gb, num)
+
+# define SHOW_UBITS(name, gb, num)\
+ NEG_USR32(name##_cache, num)
+
+# define SHOW_SBITS(name, gb, num)\
+ NEG_SSR32(name##_cache, num)
+
+# define GET_CACHE(name, gb)\
+ ((uint32_t)name##_cache)
+
+static inline int get_bits_count(GetBitContext *s){
+ return (s->buffer_ptr - s->buffer)*8 - 16 + s->bit_count;
+}
+
+static inline void skip_bits_long(GetBitContext *s, int n){
+ OPEN_READER(re, s)
+ re_bit_count += n;
+ re_buffer_ptr += 2*(re_bit_count>>4);
+ re_bit_count &= 15;
+ re_cache = ((re_buffer_ptr[-2]<<8) + re_buffer_ptr[-1]) << (16+re_bit_count);
+ UPDATE_CACHE(re, s)
+ CLOSE_READER(re, s)
+}
+
+#elif defined A32_BITSTREAM_READER
+
+# define MIN_CACHE_BITS 32
+
+# define OPEN_READER(name, gb)\
+ int name##_bit_count=(gb)->bit_count;\
+ uint32_t name##_cache0= (gb)->cache0;\
+ uint32_t name##_cache1= (gb)->cache1;\
+ uint32_t * name##_buffer_ptr=(gb)->buffer_ptr;\
+
+# define CLOSE_READER(name, gb)\
+ (gb)->bit_count= name##_bit_count;\
+ (gb)->cache0= name##_cache0;\
+ (gb)->cache1= name##_cache1;\
+ (gb)->buffer_ptr= name##_buffer_ptr;\
+
+# define UPDATE_CACHE(name, gb)\
+ if(name##_bit_count > 0){\
+ const uint32_t next= be2me_32( *name##_buffer_ptr );\
+ name##_cache0 |= NEG_USR32(next,name##_bit_count);\
+ name##_cache1 |= next<<name##_bit_count;\
+ name##_buffer_ptr++;\
+ name##_bit_count-= 32;\
+ }\
+
+#if ARCH_X86
+# define SKIP_CACHE(name, gb, num)\
+ __asm__(\
+ "shldl %2, %1, %0 \n\t"\
+ "shll %2, %1 \n\t"\
+ : "+r" (name##_cache0), "+r" (name##_cache1)\
+ : "Ic" ((uint8_t)(num))\
+ );
+#else
+# define SKIP_CACHE(name, gb, num)\
+ name##_cache0 <<= (num);\
+ name##_cache0 |= NEG_USR32(name##_cache1,num);\
+ name##_cache1 <<= (num);
+#endif
+
+# define SKIP_COUNTER(name, gb, num)\
+ name##_bit_count += (num);\
+
+# define SKIP_BITS(name, gb, num)\
+ {\
+ SKIP_CACHE(name, gb, num)\
+ SKIP_COUNTER(name, gb, num)\
+ }\
+
+# define LAST_SKIP_BITS(name, gb, num) SKIP_BITS(name, gb, num)
+# define LAST_SKIP_CACHE(name, gb, num) SKIP_CACHE(name, gb, num)
+
+# define SHOW_UBITS(name, gb, num)\
+ NEG_USR32(name##_cache0, num)
+
+# define SHOW_SBITS(name, gb, num)\
+ NEG_SSR32(name##_cache0, num)
+
+# define GET_CACHE(name, gb)\
+ (name##_cache0)
+
+static inline int get_bits_count(GetBitContext *s){
+ return ((uint8_t*)s->buffer_ptr - s->buffer)*8 - 32 + s->bit_count;
+}
+
+static inline void skip_bits_long(GetBitContext *s, int n){
+ OPEN_READER(re, s)
+ re_bit_count += n;
+ re_buffer_ptr += re_bit_count>>5;
+ re_bit_count &= 31;
+ re_cache0 = be2me_32( re_buffer_ptr[-1] ) << re_bit_count;
+ re_cache1 = 0;
+ UPDATE_CACHE(re, s)
+ CLOSE_READER(re, s)
+}
+
+#endif
+
+/**
+ * read mpeg1 dc style vlc (sign bit + mantisse with no MSB).
+ * if MSB not set it is negative
+ * @param n length in bits
+ * @author BERO
+ */
+static inline int get_xbits(GetBitContext *s, int n){
+ register int sign;
+ register int32_t cache;
+ OPEN_READER(re, s)
+ UPDATE_CACHE(re, s)
+ cache = GET_CACHE(re,s);
+ sign=(~cache)>>31;
+ LAST_SKIP_BITS(re, s, n)
+ CLOSE_READER(re, s)
+ return (NEG_USR32(sign ^ cache, n) ^ sign) - sign;
+}
+
+static inline int get_sbits(GetBitContext *s, int n){
+ register int tmp;
+ OPEN_READER(re, s)
+ UPDATE_CACHE(re, s)
+ tmp= SHOW_SBITS(re, s, n);
+ LAST_SKIP_BITS(re, s, n)
+ CLOSE_READER(re, s)
+ return tmp;
+}
+
+/**
+ * reads 1-17 bits.
+ * Note, the alt bitstream reader can read up to 25 bits, but the libmpeg2 reader can't
+ */
+static inline unsigned int get_bits(GetBitContext *s, int n){
+ register int tmp;
+ OPEN_READER(re, s)
+ UPDATE_CACHE(re, s)
+ tmp= SHOW_UBITS(re, s, n);
+ LAST_SKIP_BITS(re, s, n)
+ CLOSE_READER(re, s)
+ return tmp;
+}
+
+/**
+ * shows 1-17 bits.
+ * Note, the alt bitstream reader can read up to 25 bits, but the libmpeg2 reader can't
+ */
+static inline unsigned int show_bits(GetBitContext *s, int n){
+ register int tmp;
+ OPEN_READER(re, s)
+ UPDATE_CACHE(re, s)
+ tmp= SHOW_UBITS(re, s, n);
+// CLOSE_READER(re, s)
+ return tmp;
+}
+
+static inline void skip_bits(GetBitContext *s, int n){
+ //Note gcc seems to optimize this to s->index+=n for the ALT_READER :))
+ OPEN_READER(re, s)
+ UPDATE_CACHE(re, s)
+ LAST_SKIP_BITS(re, s, n)
+ CLOSE_READER(re, s)
+}
+
+static inline unsigned int get_bits1(GetBitContext *s){
+#ifdef ALT_BITSTREAM_READER
+ int index= s->index;
+ uint8_t result= s->buffer[ index>>3 ];
+#ifdef ALT_BITSTREAM_READER_LE
+ result>>= (index&0x07);
+ result&= 1;
+#else
+ result<<= (index&0x07);
+ result>>= 8 - 1;
+#endif
+ index++;
+ s->index= index;
+
+ return result;
+#else
+ return get_bits(s, 1);
+#endif
+}
+
+static inline unsigned int show_bits1(GetBitContext *s){
+ return show_bits(s, 1);
+}
+
+static inline void skip_bits1(GetBitContext *s){
+ skip_bits(s, 1);
+}
+
+/**
+ * reads 0-32 bits.
+ */
+static inline unsigned int get_bits_long(GetBitContext *s, int n){
+ if(n<=17) return get_bits(s, n);
+ else{
+#ifdef ALT_BITSTREAM_READER_LE
+ int ret= get_bits(s, 16);
+ return ret | (get_bits(s, n-16) << 16);
+#else
+ int ret= get_bits(s, 16) << (n-16);
+ return ret | get_bits(s, n-16);
+#endif
+ }
+}
+
+/**
+ * reads 0-32 bits as a signed integer.
+ */
+static inline int get_sbits_long(GetBitContext *s, int n) {
+ return sign_extend(get_bits_long(s, n), n);
+}
+
+/**
+ * shows 0-32 bits.
+ */
+static inline unsigned int show_bits_long(GetBitContext *s, int n){
+ if(n<=17) return show_bits(s, n);
+ else{
+ GetBitContext gb= *s;
+ return get_bits_long(&gb, n);
+ }
+}
+
+static inline int check_marker(GetBitContext *s, const char *msg)
+{
+ int bit= get_bits1(s);
+ if(!bit)
+ av_log(NULL, AV_LOG_INFO, "Marker bit missing %s\n", msg);
+
+ return bit;
+}
+
+/**
+ * init GetBitContext.
+ * @param buffer bitstream buffer, must be FF_INPUT_BUFFER_PADDING_SIZE bytes larger then the actual read bits
+ * because some optimized bitstream readers read 32 or 64 bit at once and could read over the end
+ * @param bit_size the size of the buffer in bits
+ */
+static inline void init_get_bits(GetBitContext *s,
+ const uint8_t *buffer, int bit_size)
+{
+ int buffer_size= (bit_size+7)>>3;
+ if(buffer_size < 0 || bit_size < 0) {
+ buffer_size = bit_size = 0;
+ buffer = NULL;
+ }
+
+ s->buffer= buffer;
+ s->size_in_bits= bit_size;
+ s->buffer_end= buffer + buffer_size;
+#ifdef ALT_BITSTREAM_READER
+ s->index=0;
+#elif defined LIBMPEG2_BITSTREAM_READER
+ s->buffer_ptr = (uint8_t*)((intptr_t)buffer&(~1));
+ s->bit_count = 16 + 8*((intptr_t)buffer&1);
+ skip_bits_long(s, 0);
+#elif defined A32_BITSTREAM_READER
+ s->buffer_ptr = (uint32_t*)((intptr_t)buffer&(~3));
+ s->bit_count = 32 + 8*((intptr_t)buffer&3);
+ skip_bits_long(s, 0);
+#endif
+}
+
+static inline void align_get_bits(GetBitContext *s)
+{
+ int n= (-get_bits_count(s)) & 7;
+ if(n) skip_bits(s, n);
+}
+
+#define init_vlc(vlc, nb_bits, nb_codes,\
+ bits, bits_wrap, bits_size,\
+ codes, codes_wrap, codes_size,\
+ flags)\
+ init_vlc_sparse(vlc, nb_bits, nb_codes,\
+ bits, bits_wrap, bits_size,\
+ codes, codes_wrap, codes_size,\
+ NULL, 0, 0, flags)
+
+int init_vlc_sparse(VLC *vlc, int nb_bits, int nb_codes,
+ const void *bits, int bits_wrap, int bits_size,
+ const void *codes, int codes_wrap, int codes_size,
+ const void *symbols, int symbols_wrap, int symbols_size,
+ int flags);
+#define INIT_VLC_USE_STATIC 1 ///< VERY strongly deprecated and forbidden
+#define INIT_VLC_LE 2
+#define INIT_VLC_USE_NEW_STATIC 4
+void free_vlc(VLC *vlc);
+
+#define INIT_VLC_STATIC(vlc, bits, a,b,c,d,e,f,g, static_size)\
+{\
+ static VLC_TYPE table[static_size][2];\
+ (vlc)->table= table;\
+ (vlc)->table_allocated= static_size;\
+ init_vlc(vlc, bits, a,b,c,d,e,f,g, INIT_VLC_USE_NEW_STATIC);\
+}
+
+
+/**
+ *
+ * if the vlc code is invalid and max_depth=1 than no bits will be removed
+ * if the vlc code is invalid and max_depth>1 than the number of bits removed
+ * is undefined
+ */
+#define GET_VLC(code, name, gb, table, bits, max_depth)\
+{\
+ int n, index, nb_bits;\
+\
+ index= SHOW_UBITS(name, gb, bits);\
+ code = table[index][0];\
+ n = table[index][1];\
+\
+ if(max_depth > 1 && n < 0){\
+ LAST_SKIP_BITS(name, gb, bits)\
+ UPDATE_CACHE(name, gb)\
+\
+ nb_bits = -n;\
+\
+ index= SHOW_UBITS(name, gb, nb_bits) + code;\
+ code = table[index][0];\
+ n = table[index][1];\
+ if(max_depth > 2 && n < 0){\
+ LAST_SKIP_BITS(name, gb, nb_bits)\
+ UPDATE_CACHE(name, gb)\
+\
+ nb_bits = -n;\
+\
+ index= SHOW_UBITS(name, gb, nb_bits) + code;\
+ code = table[index][0];\
+ n = table[index][1];\
+ }\
+ }\
+ SKIP_BITS(name, gb, n)\
+}
+
+#define GET_RL_VLC(level, run, name, gb, table, bits, max_depth, need_update)\
+{\
+ int n, index, nb_bits;\
+\
+ index= SHOW_UBITS(name, gb, bits);\
+ level = table[index].level;\
+ n = table[index].len;\
+\
+ if(max_depth > 1 && n < 0){\
+ SKIP_BITS(name, gb, bits)\
+ if(need_update){\
+ UPDATE_CACHE(name, gb)\
+ }\
+\
+ nb_bits = -n;\
+\
+ index= SHOW_UBITS(name, gb, nb_bits) + level;\
+ level = table[index].level;\
+ n = table[index].len;\
+ }\
+ run= table[index].run;\
+ SKIP_BITS(name, gb, n)\
+}
+
+
+/**
+ * parses a vlc code, faster then get_vlc()
+ * @param bits is the number of bits which will be read at once, must be
+ * identical to nb_bits in init_vlc()
+ * @param max_depth is the number of times bits bits must be read to completely
+ * read the longest vlc code
+ * = (max_vlc_length + bits - 1) / bits
+ */
+static av_always_inline int get_vlc2(GetBitContext *s, VLC_TYPE (*table)[2],
+ int bits, int max_depth)
+{
+ int code;
+
+ OPEN_READER(re, s)
+ UPDATE_CACHE(re, s)
+
+ GET_VLC(code, re, s, table, bits, max_depth)
+
+ CLOSE_READER(re, s)
+ return code;
+}
+
+//#define TRACE
+
+#ifdef TRACE
+static inline void print_bin(int bits, int n){
+ int i;
+
+ for(i=n-1; i>=0; i--){
+ av_log(NULL, AV_LOG_DEBUG, "%d", (bits>>i)&1);
+ }
+ for(i=n; i<24; i++)
+ av_log(NULL, AV_LOG_DEBUG, " ");
+}
+
+static inline int get_bits_trace(GetBitContext *s, int n, char *file, const char *func, int line){
+ int r= get_bits(s, n);
+
+ print_bin(r, n);
+ av_log(NULL, AV_LOG_DEBUG, "%5d %2d %3d bit @%5d in %s %s:%d\n", r, n, r, get_bits_count(s)-n, file, func, line);
+ return r;
+}
+static inline int get_vlc_trace(GetBitContext *s, VLC_TYPE (*table)[2], int bits, int max_depth, char *file, const char *func, int line){
+ int show= show_bits(s, 24);
+ int pos= get_bits_count(s);
+ int r= get_vlc2(s, table, bits, max_depth);
+ int len= get_bits_count(s) - pos;
+ int bits2= show>>(24-len);
+
+ print_bin(bits2, len);
+
+ av_log(NULL, AV_LOG_DEBUG, "%5d %2d %3d vlc @%5d in %s %s:%d\n", bits2, len, r, pos, file, func, line);
+ return r;
+}
+static inline int get_xbits_trace(GetBitContext *s, int n, char *file, const char *func, int line){
+ int show= show_bits(s, n);
+ int r= get_xbits(s, n);
+
+ print_bin(show, n);
+ av_log(NULL, AV_LOG_DEBUG, "%5d %2d %3d xbt @%5d in %s %s:%d\n", show, n, r, get_bits_count(s)-n, file, func, line);
+ return r;
+}
+
+#define get_bits(s, n) get_bits_trace(s, n, __FILE__, __PRETTY_FUNCTION__, __LINE__)
+#define get_bits1(s) get_bits_trace(s, 1, __FILE__, __PRETTY_FUNCTION__, __LINE__)
+#define get_xbits(s, n) get_xbits_trace(s, n, __FILE__, __PRETTY_FUNCTION__, __LINE__)
+#define get_vlc(s, vlc) get_vlc_trace(s, (vlc)->table, (vlc)->bits, 3, __FILE__, __PRETTY_FUNCTION__, __LINE__)
+#define get_vlc2(s, tab, bits, max) get_vlc_trace(s, tab, bits, max, __FILE__, __PRETTY_FUNCTION__, __LINE__)
+
+#define tprintf(p, ...) av_log(p, AV_LOG_DEBUG, __VA_ARGS__)
+
+#else //TRACE
+#define tprintf(p, ...) {}
+#endif
+
+static inline int decode012(GetBitContext *gb){
+ int n;
+ n = get_bits1(gb);
+ if (n == 0)
+ return 0;
+ else
+ return get_bits1(gb) + 1;
+}
+
+static inline int decode210(GetBitContext *gb){
+ if (get_bits1(gb))
+ return 0;
+ else
+ return 2 - get_bits1(gb);
+}
+
+#endif /* AVCODEC_GET_BITS_H */
#define AVCODEC_GOLOMB_H
#include <stdint.h>
-#include "bitstream.h"
+#include "get_bits.h"
#include "put_bits.h"
#define INVALID_VLC 0x80000000
#include "libavutil/common.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "mpegvideo.h"
#include "h264data.h"
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "huffman.h"
/* symbol for Huffman tree node */
#define AVCODEC_HUFFMAN_H
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
typedef struct {
int16_t sym;
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "put_bits.h"
#include "dsputil.h"
#define ALT_BITSTREAM_READER
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "dsputil.h"
#include "imcdata.h"
*/
#define ALT_BITSTREAM_READER_LE
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "indeo2data.h"
typedef struct Ir2Context{
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "mpegvideo.h"
#include "msmpeg4data.h"
#include "intrax8huf.h"
#ifndef AVCODEC_INTRAX8_H
#define AVCODEC_INTRAX8_H
-#include "bitstream.h"
+#include "get_bits.h"
#include "mpegvideo.h"
typedef struct{
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "golomb.h"
#include "mathops.h"
#include "mjpeg.h"
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "golomb.h"
#include "mathops.h"
#include "dsputil.h"
#include <stdlib.h>
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "lcl.h"
#if CONFIG_ZLIB
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "golomb.h"
#include "mathops.h"
#ifndef AVCODEC_LZW_H
#define AVCODEC_LZW_H
-#include "bitstream.h"
+#include "get_bits.h"
enum FF_LZW_MODES{
FF_LZW_GIF,
#include <stdint.h>
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "bytestream.h"
#include "dsputil.h"
#define AVCODEC_MJPEGDEC_H
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "dsputil.h"
#define MAX_COMPONENTS 4
#include <stdint.h>
#include "libavutil/crc.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "parser.h"
#include "mlp_parser.h"
#include "mlp.h"
#ifndef AVCODEC_MLP_PARSER_H
#define AVCODEC_MLP_PARSER_H
-#include "bitstream.h"
+#include "get_bits.h"
typedef struct MLPHeaderInfo
{
#include "avcodec.h"
#include "libavutil/intreadwrite.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "libavutil/crc.h"
#include "parser.h"
#include "mlp_parser.h"
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "dsputil.h"
#define MAX_HUFF_CODES 16
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "dsputil.h"
#include "mpegaudio.h"
#include "libavutil/lfg.h"
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "dsputil.h"
#include "mpegaudio.h"
#include "libavutil/lfg.h"
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "dsputil.h"
#include "mpegaudio.h"
#include "libavutil/lfg.h"
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "dsputil.h"
#include "mpegaudio.h"
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include "bitstream.h"
+#include "get_bits.h"
#include "mpeg4audio.h"
const int ff_mpeg4audio_sample_rates[16] = {
#define AVCODEC_MPEGAUDIO_H
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "dsputil.h"
#define CONFIG_AUDIO_NONSHORT 0
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "dsputil.h"
/*
#define AVCODEC_MPEGVIDEO_H
#include "dsputil.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "put_bits.h"
#include "ratecontrol.h"
#include "parser.h"
#define AVCODEC_MSMPEG4DATA_H
#include "libavutil/common.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "rl.h"
/* motion vector table */
#include "dsputil.h"
#define ALT_BITSTREAM_READER_LE
-#include "bitstream.h"
+#include "get_bits.h"
const float ff_nelly_dequantization_table[127] = {
0.0000000000,
#include "dsputil.h"
#define ALT_BITSTREAM_READER_LE
-#include "bitstream.h"
+#include "get_bits.h"
typedef struct NellyMoserDecodeContext {
*/
#include "avcodec.h"
-#include "bitstream.h" // for ff_reverse
+#include "get_bits.h" // for ff_reverse
#include "bytestream.h"
#define MAX_CHANNELS 64
#include "avcodec.h"
#include "bytestream.h"
-#include "bitstream.h"
+#include "get_bits.h"
typedef struct PCXContext {
AVFrame picture;
#include <inttypes.h>
#include "libavutil/intreadwrite.h"
-#include "libavcodec/bitstream.h"
+#include "libavcodec/get_bits.h"
typedef struct AVComponentDescriptor{
uint16_t plane :2; ///< which of the 4 planes contains the component
#include "avcodec.h"
#include "internal.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "qcelpdata.h"
#define ALT_BITSTREAM_READER_LE
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "dsputil.h"
#include "mpegaudio.h"
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "ra144.h"
#include "celp_filters.h"
#include "avcodec.h"
#define ALT_BITSTREAM_READER_LE
-#include "bitstream.h"
+#include "get_bits.h"
#include "ra288.h"
#include "lpc.h"
#include "celp_math.h"
#define AVCODEC_RL_H
#include <stdint.h>
-#include "bitstream.h"
+#include "get_bits.h"
/* run length table */
#define MAX_RUN 64
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/common.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "dsputil.h"
#include "rtjpeg.h"
#define DEBUG
#include <limits.h>
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "golomb.h"
#define MAX_CHANNELS 8
#include "avcodec.h"
#define ALT_BITSTREAM_READER_LE
-#include "bitstream.h"
+#include "get_bits.h"
#include "bytestream.h"
#define SMKTREE_BITS 9
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "golomb.h"
/**
#include "avcodec.h"
#define ALT_BITSTREAM_READER_LE
-#include "bitstream.h"
+#include "get_bits.h"
typedef struct SeqVideoContext {
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "dsputil.h"
#define TM2_ESCAPE 0x80000000
//#define DEBUG
#include <limits.h>
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#define FORMAT_INT 1
#define FORMAT_FLOAT 3
#ifndef AVCODEC_UNARY_H
#define AVCODEC_UNARY_H
-#include "bitstream.h"
+#include "get_bits.h"
/**
* Get unary code of limited length
#include <stdint.h>
#include "libavutil/rational.h"
-#include "bitstream.h"
+#include "get_bits.h"
/** Table for conversion between TTBLK and TTMB */
extern const int ff_vc1_ttblk_to_tt[3][8];
#define ALT_BITSTREAM_READER_LE
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "vorbis.h"
#define ALT_BITSTREAM_READER_LE
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "dsputil.h"
#include "vorbis.h"
#include "avcodec.h"
#include "dsputil.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "vp3data.h"
#include "xiph.h"
#include "avcodec.h"
#include "dsputil.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "vp56.h"
#include "vp56data.h"
#include "vp56data.h"
#include "dsputil.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "bytestream.h"
#include "avcodec.h"
#include "dsputil.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "huffman.h"
#include "vp56.h"
*/
#define ALT_BITSTREAM_READER_LE
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "unary.h"
/**
#ifndef AVCODEC_WMA_H
#define AVCODEC_WMA_H
-#include "bitstream.h"
+#include "get_bits.h"
#include "put_bits.h"
#include "dsputil.h"
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
typedef struct WNV1Context{
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "bytestream.h"
static av_cold int decode_init(AVCodecContext *avctx) {
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include "libavcodec/bitstream.h"
+#include "libavcodec/get_bits.h"
#include "libavcodec/put_bits.h"
#include "libavcodec/internal.h"
#include "avformat.h"
#include "isom.h"
#include "libavcodec/mpeg4audio.h"
#include "libavcodec/mpegaudiodata.h"
-#include "libavcodec/bitstream.h"
+#include "libavcodec/get_bits.h"
#if CONFIG_ZLIB
#include <zlib.h>
#include "avio.h"
#include "isom.h"
#include "avc.h"
-#include "libavcodec/bitstream.h"
+#include "libavcodec/get_bits.h"
#include "libavcodec/put_bits.h"
#undef NDEBUG
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include "libavcodec/bitstream.h"
+#include "libavcodec/get_bits.h"
#include "avformat.h"
#include "id3v2.h"
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include "libavcodec/bitstream.h"
+#include "libavcodec/get_bits.h"
#include "libavcodec/unary.h"
#include "avformat.h"
*/
#include <stdlib.h>
-#include "libavcodec/bitstream.h"
+#include "libavcodec/get_bits.h"
#include "libavcodec/flac.h"
#include "avformat.h"
#include "oggdec.h"
#include <stdlib.h>
#include "libavutil/intreadwrite.h"
-#include "libavcodec/bitstream.h"
+#include "libavcodec/get_bits.h"
#include "libavcodec/bytestream.h"
#include "avformat.h"
#include "oggdec.h"
#include <stdlib.h>
#include "libavutil/bswap.h"
#include "libavutil/avstring.h"
-#include "libavcodec/bitstream.h"
+#include "libavcodec/get_bits.h"
#include "libavcodec/bytestream.h"
#include "avformat.h"
#include "oggdec.h"
#include <stdlib.h>
#include "libavutil/bswap.h"
-#include "libavcodec/bitstream.h"
+#include "libavcodec/get_bits.h"
#include "avformat.h"
#include "oggdec.h"
#include <stdlib.h>
#include "libavutil/avstring.h"
#include "libavutil/bswap.h"
-#include "libavcodec/bitstream.h"
+#include "libavcodec/get_bits.h"
#include "libavcodec/bytestream.h"
#include "avformat.h"
#include "oggdec.h"
#include "libavutil/crc.h"
#include "libavcodec/ac3_parser.h"
-#include "libavcodec/bitstream.h"
+#include "libavcodec/get_bits.h"
#include "libavcodec/bytestream.h"
#include "avformat.h"
#include "raw.h"
#include "libavutil/md5.h"
#include "rm.h"
#include "internal.h"
-#include "libavcodec/bitstream.h"
+#include "libavcodec/get_bits.h"
struct RDTDemuxContext {
AVFormatContext *ic; /**< the containing (RTSP) demux context */
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include "libavcodec/bitstream.h"
+#include "libavcodec/get_bits.h"
#include "avformat.h"
#include <unistd.h>
#include "libavutil/base64.h"
#include "libavutil/avstring.h"
-#include "libavcodec/bitstream.h"
+#include "libavcodec/get_bits.h"
#include "avformat.h"
#include "mpegts.h"
/* needed for gethostname() */
#define _XOPEN_SOURCE 600
-#include "libavcodec/bitstream.h"
+#include "libavcodec/get_bits.h"
#include "avformat.h"
#include "mpegts.h"
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include "libavcodec/bitstream.h"
+#include "libavcodec/get_bits.h"
#include "avformat.h"
#include "mpegts.h"
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include "libavcodec/bitstream.h"
+#include "libavcodec/get_bits.h"
#include "avformat.h"
typedef struct {