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Code Issues Releases Activity

put_bits: remove ALT_BITSTREAM_WRITER

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The code for this variant does not compile.

Signed-off-by: Mans Rullgard <mans@mansr.com>
This commit is contained in:
Mans Rullgard 2011-07-02 11:50:24 +01:00
parent 30b05520c8
commit 0d5c349ac4
3 changed files with 1 additions and 107 deletions
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4
libavcodec/bitstream.c
View File

@ -43,11 +43,7 @@ const uint8_t ff_log2_run[41]={
void align_put_bits(PutBitContext *s)
{
#ifdef ALT_BITSTREAM_WRITER
put_bits(s,( - s->index) & 7,0);
#else
put_bits(s,s->bit_left & 7,0);
#endif
}
void ff_put_string(PutBitContext *pb, const char *string, int terminate_string)

2
libavcodec/mpegvideo_enc.c
View File

@ -2170,9 +2170,7 @@ static int encode_thread(AVCodecContext *c, void *arg){
int d= 100 / s->avctx->error_rate;
if(r % d == 0){
current_packet_size=0;
#ifndef ALT_BITSTREAM_WRITER
s->pb.buf_ptr= s->ptr_lastgob;
#endif
assert(put_bits_ptr(&s->pb) == s->ptr_lastgob);
}
}

102
libavcodec/put_bits.h
View File

@ -36,19 +36,10 @@
#include "mathops.h"
#include "config.h"
//#define ALT_BITSTREAM_WRITER
//#define ALIGNED_BITSTREAM_WRITER
/* buf and buf_end must be present and used by every alternative writer. */
typedef struct PutBitContext {
#ifdef ALT_BITSTREAM_WRITER
uint8_t *buf, *buf_end;
int index;
#else
uint32_t bit_buf;
int bit_left;
uint8_t *buf, *buf_ptr, *buf_end;
#endif
int size_in_bits;
} PutBitContext;
@ -68,14 +59,9 @@ static inline void init_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_s
s->size_in_bits= 8*buffer_size;
s->buf = buffer;
s->buf_end = s->buf + buffer_size;
#ifdef ALT_BITSTREAM_WRITER
s->index=0;
AV_ZERO32(s->buf);
#else
s->buf_ptr = s->buf;
s->bit_left=32;
s->bit_buf=0;
#endif
}
/**
@ -83,11 +69,7 @@ static inline void init_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_s
*/
static inline int put_bits_count(PutBitContext *s)
{
#ifdef ALT_BITSTREAM_WRITER
return s->index;
#else
return (s->buf_ptr - s->buf) * 8 + 32 - s->bit_left;
#endif
}
/**
@ -95,9 +77,6 @@ static inline int put_bits_count(PutBitContext *s)
*/
static inline void flush_put_bits(PutBitContext *s)
{
#ifdef ALT_BITSTREAM_WRITER
align_put_bits(s);
#else
#ifndef BITSTREAM_WRITER_LE
s->bit_buf<<= s->bit_left;
#endif
@ -114,10 +93,9 @@ static inline void flush_put_bits(PutBitContext *s)
}
s->bit_left=32;
s->bit_buf=0;
#endif
}
#if defined(ALT_BITSTREAM_WRITER) || defined(BITSTREAM_WRITER_LE)
#ifdef BITSTREAM_WRITER_LE
#define align_put_bits align_put_bits_unsupported_here
#define ff_put_string ff_put_string_unsupported_here
#define ff_copy_bits ff_copy_bits_unsupported_here
@ -147,7 +125,6 @@ void ff_copy_bits(PutBitContext *pb, const uint8_t *src, int length);
* Use put_bits32 to write 32 bits.
*/
static inline void put_bits(PutBitContext *s, int n, unsigned int value)
#ifndef ALT_BITSTREAM_WRITER
{
unsigned int bit_buf;
int bit_left;
@ -187,70 +164,6 @@ static inline void put_bits(PutBitContext *s, int n, unsigned int value)
s->bit_buf = bit_buf;
s->bit_left = bit_left;
}
#else /* ALT_BITSTREAM_WRITER defined */
{
# ifdef ALIGNED_BITSTREAM_WRITER
# if ARCH_X86
__asm__ volatile(
"movl %0, %%ecx \n\t"
"xorl %%eax, %%eax \n\t"
"shrdl %%cl, %1, %%eax \n\t"
"shrl %%cl, %1 \n\t"
"movl %0, %%ecx \n\t"
"shrl $3, %%ecx \n\t"
"andl $0xFFFFFFFC, %%ecx \n\t"
"bswapl %1 \n\t"
"orl %1, (%2, %%ecx) \n\t"
"bswapl %%eax \n\t"
"addl %3, %0 \n\t"
"movl %%eax, 4(%2, %%ecx) \n\t"
: "=&r" (s->index), "=&r" (value)
: "r" (s->buf), "r" (n), "0" (s->index), "1" (value<<(-n))
: "%eax", "%ecx"
);
# else
int index= s->index;
uint32_t *ptr= ((uint32_t *)s->buf)+(index>>5);
value<<= 32-n;
ptr[0] |= av_be2ne32(value>>(index&31));
ptr[1] = av_be2ne32(value<<(32-(index&31)));
//if(n>24) printf("%d %d\n", n, value);
index+= n;
s->index= index;
# endif
# else //ALIGNED_BITSTREAM_WRITER
# if ARCH_X86
__asm__ volatile(
"movl $7, %%ecx \n\t"
"andl %0, %%ecx \n\t"
"addl %3, %%ecx \n\t"
"negl %%ecx \n\t"
"shll %%cl, %1 \n\t"
"bswapl %1 \n\t"
"movl %0, %%ecx \n\t"
"shrl $3, %%ecx \n\t"
"orl %1, (%%ecx, %2) \n\t"
"addl %3, %0 \n\t"
"movl $0, 4(%%ecx, %2) \n\t"
: "=&r" (s->index), "=&r" (value)
: "r" (s->buf), "r" (n), "0" (s->index), "1" (value)
: "%ecx"
);
# else
int index= s->index;
uint32_t *ptr= (uint32_t*)(((uint8_t *)s->buf)+(index>>3));
ptr[0] |= av_be2ne32(value<<(32-n-(index&7) ));
ptr[1] = 0;
//if(n>24) printf("%d %d\n", n, value);
index+= n;
s->index= index;
# endif
# endif //!ALIGNED_BITSTREAM_WRITER
}
#endif
static inline void put_sbits(PutBitContext *pb, int n, int32_t value)
{
@ -281,11 +194,7 @@ static void av_unused put_bits32(PutBitContext *s, uint32_t value)
*/
static inline uint8_t* put_bits_ptr(PutBitContext *s)
{
#ifdef ALT_BITSTREAM_WRITER
return s->buf + (s->index>>3);
#else
return s->buf_ptr;
#endif
}
/**
@ -295,13 +204,8 @@ static inline uint8_t* put_bits_ptr(PutBitContext *s)
static inline void skip_put_bytes(PutBitContext *s, int n)
{
assert((put_bits_count(s)&7)==0);
#ifdef ALT_BITSTREAM_WRITER
FIXME may need some cleaning of the buffer
s->index += n<<3;
#else
assert(s->bit_left==32);
s->buf_ptr += n;
#endif
}
/**
@ -311,13 +215,9 @@ static inline void skip_put_bytes(PutBitContext *s, int n)
*/
static inline void skip_put_bits(PutBitContext *s, int n)
{
#ifdef ALT_BITSTREAM_WRITER
s->index += n;
#else
s->bit_left -= n;
s->buf_ptr-= 4*(s->bit_left>>5);
s->bit_left &= 31;
#endif
}
/**