X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fbitstream.c;h=9002830cec0bf0ff62873d05f5d129eafd3ab558;hb=881b5b80da6bf63d01db5baa1db602a20f64b12c;hp=57f139138eb4c3ffdbdeafd288de9b562d522c5e;hpb=b3bf98aa56f6985e86d97a975c954370c47ca8d6;p=ffmpeg diff --git a/libavcodec/bitstream.c b/libavcodec/bitstream.c index 57f139138eb..9002830cec0 100644 --- a/libavcodec/bitstream.c +++ b/libavcodec/bitstream.c @@ -1,6 +1,6 @@ /* * Common bit i/o utils - * Copyright (c) 2000, 2001 Fabrice Bellard. + * Copyright (c) 2000, 2001 Fabrice Bellard * Copyright (c) 2002-2004 Michael Niedermayer * * alternative bitstream reader & writer by Michael Niedermayer @@ -23,12 +23,13 @@ */ /** - * @file bitstream.c + * @file libavcodec/bitstream.c * bitstream api. */ #include "avcodec.h" -#include "bitstream.h" +#include "get_bits.h" +#include "put_bits.h" const uint8_t ff_log2_run[32]={ 0, 0, 0, 0, 1, 1, 1, 1, @@ -37,23 +38,6 @@ const uint8_t ff_log2_run[32]={ 8, 9,10,11,12,13,14,15 }; -/** - * Same as av_mallocz_static(), but does a realloc. - * - * @param[in] ptr The block of memory to reallocate. - * @param[in] size The requested size. - * @return Block of memory of requested size. - * @deprecated. Code which uses ff_realloc_static is broken/misdesigned - * and should correctly use static arrays - */ -attribute_deprecated av_alloc_size(2) -static void *ff_realloc_static(void *ptr, unsigned int size); - -static void *ff_realloc_static(void *ptr, unsigned int size) -{ - return av_realloc(ptr, size); -} - void align_put_bits(PutBitContext *s) { #ifdef ALT_BITSTREAM_WRITER @@ -63,36 +47,35 @@ void align_put_bits(PutBitContext *s) #endif } -void ff_put_string(PutBitContext * pbc, const char *s, int put_zero) +void ff_put_string(PutBitContext *pb, const char *string, int terminate_string) { - while(*s){ - put_bits(pbc, 8, *s); - s++; + while(*string){ + put_bits(pb, 8, *string); + string++; } - if(put_zero) - put_bits(pbc, 8, 0); + if(terminate_string) + put_bits(pb, 8, 0); } void ff_copy_bits(PutBitContext *pb, const uint8_t *src, int length) { - const uint16_t *srcw= (const uint16_t*)src; int words= length>>4; int bits= length&15; int i; if(length==0) return; - if(ENABLE_SMALL || words < 16 || put_bits_count(pb)&7){ - for(i=0; i>(16-bits)); + put_bits(pb, bits, AV_RB16(src + 2*words)>>(16-bits)); } /* VLC decoding */ @@ -122,15 +105,11 @@ static int alloc_table(VLC *vlc, int size, int use_static) index = vlc->table_size; vlc->table_size += size; if (vlc->table_size > vlc->table_allocated) { - if(use_static>1) + if(use_static) abort(); //cant do anything, init_vlc() is used with too little memory vlc->table_allocated += (1 << vlc->bits); - if(use_static) - vlc->table = ff_realloc_static(vlc->table, - sizeof(VLC_TYPE) * 2 * vlc->table_allocated); - else - vlc->table = av_realloc(vlc->table, - sizeof(VLC_TYPE) * 2 * vlc->table_allocated); + vlc->table = av_realloc(vlc->table, + sizeof(VLC_TYPE) * 2 * vlc->table_allocated); if (!vlc->table) return -1; } @@ -149,7 +128,7 @@ static int build_table(VLC *vlc, int table_nb_bits, VLC_TYPE (*table)[2]; table_size = 1 << table_nb_bits; - table_index = alloc_table(vlc, table_size, flags & (INIT_VLC_USE_STATIC|INIT_VLC_USE_NEW_STATIC)); + table_index = alloc_table(vlc, table_size, flags & INIT_VLC_USE_NEW_STATIC); #ifdef DEBUG_VLC av_log(NULL,AV_LOG_DEBUG,"new table index=%d size=%d code_prefix=%x n=%d\n", table_index, table_size, code_prefix, n_prefix); @@ -284,15 +263,10 @@ int init_vlc_sparse(VLC *vlc, int nb_bits, int nb_codes, }else if(vlc->table_size){ abort(); // fatal error, we are called on a partially initialized table } - }else if(!(flags & INIT_VLC_USE_STATIC)) { + }else { vlc->table = NULL; vlc->table_allocated = 0; vlc->table_size = 0; - } else { - /* Static tables are initially always NULL, return - if vlc->table != NULL to avoid double allocation */ - if(vlc->table) - return 0; } #ifdef DEBUG_VLC