/*
* Common bit i/o utils
- * Copyright (c) 2000, 2001 Fabrice Bellard.
+ * Copyright (c) 2000, 2001 Fabrice Bellard
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
* alternative bitstream reader & writer by Michael Niedermayer <michaelni@gmx.at>
*/
/**
- * @file bitstream.c
+ * @file libavcodec/bitstream.c
* bitstream api.
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
+#include "put_bits.h"
-/**
- * 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)
-void *ff_realloc_static(void *ptr, unsigned int size);
+const uint8_t ff_log2_run[32]={
+ 0, 0, 0, 0, 1, 1, 1, 1,
+ 2, 2, 2, 2, 3, 3, 3, 3,
+ 4, 4, 5, 5, 6, 6, 7, 7,
+ 8, 9,10,11,12,13,14,15
+};
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<words; i++) put_bits(pb, 16, be2me_16(srcw[i]));
+ if(CONFIG_SMALL || words < 16 || put_bits_count(pb)&7){
+ for(i=0; i<words; i++) put_bits(pb, 16, AV_RB16(src + 2*i));
}else{
for(i=0; put_bits_count(pb)&31; i++)
put_bits(pb, 8, src[i]);
flush_put_bits(pb);
- memcpy(pbBufPtr(pb), src+i, 2*words-i);
+ memcpy(put_bits_ptr(pb), src+i, 2*words-i);
skip_put_bytes(pb, 2*words-i);
}
- put_bits(pb, bits, be2me_16(srcw[words])>>(16-bits));
+ put_bits(pb, bits, AV_RB16(src + 2*words)>>(16-bits));
}
/* VLC decoding */
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;
}
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);
}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