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golomb: Convert to the new bitstream reader

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This commit is contained in:
Diego Biurrun 2017-01-30 20:24:38 +01:00
parent ab87af4163
commit d4c2103bd3
35 changed files with 693 additions and 160 deletions
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2
libavcodec/aic.c
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@ -26,7 +26,7 @@
#include "bytestream.h"
#include "internal.h"
#include "get_bits.h"
#include "golomb.h"
#include "golomb_legacy.h"
#include "idctdsp.h"
#include "thread.h"
#include "unary_legacy.h"

2
libavcodec/cavs.c
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@ -27,7 +27,7 @@
#include "avcodec.h"
#include "get_bits.h"
#include "golomb.h"
#include "golomb_legacy.h"
#include "h264chroma.h"
#include "idctdsp.h"
#include "internal.h"

2
libavcodec/cavsdec.c
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@ -27,7 +27,7 @@
#include "avcodec.h"
#include "get_bits.h"
#include "golomb.h"
#include "golomb_legacy.h"
#include "cavs.h"
#include "internal.h"
#include "mpeg12data.h"

2
libavcodec/dirac.c
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@ -29,7 +29,7 @@
#include "avcodec.h"
#include "dirac.h"
#include "golomb.h"
#include "golomb_legacy.h"
#include "internal.h"
#include "mpeg12data.h"

3
libavcodec/ffv1dec.c
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@ -31,12 +31,13 @@
#include "libavutil/opt.h"
#include "libavutil/imgutils.h"
#include "libavutil/timer.h"
#include "avcodec.h"
#include "golomb_legacy.h"
#include "internal.h"
#include "get_bits.h"
#include "put_bits.h"
#include "rangecoder.h"
#include "golomb.h"
#include "mathops.h"
#include "ffv1.h"

2
libavcodec/ffv1enc.c
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@ -33,10 +33,10 @@
#include "libavutil/imgutils.h"
#include "avcodec.h"
#include "golomb_legacy.h"
#include "internal.h"
#include "put_bits.h"
#include "rangecoder.h"
#include "golomb.h"
#include "mathops.h"
#include "ffv1.h"

3
libavcodec/fic.c
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@ -22,10 +22,11 @@
*/
#include "libavutil/common.h"
#include "avcodec.h"
#include "golomb_legacy.h"
#include "internal.h"
#include "get_bits.h"
#include "golomb.h"
typedef struct FICThreadContext {
DECLARE_ALIGNED(16, int16_t, block)[64];

2
libavcodec/flacdec.c
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@ -37,7 +37,7 @@
#include "internal.h"
#include "get_bits.h"
#include "bytestream.h"
#include "golomb.h"
#include "golomb_legacy.h"
#include "flac.h"
#include "flacdata.h"
#include "flacdsp.h"

2
libavcodec/flacenc.c
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@ -26,7 +26,7 @@
#include "avcodec.h"
#include "bswapdsp.h"
#include "golomb.h"
#include "golomb_legacy.h"
#include "internal.h"
#include "lpc.h"
#include "flac.h"

190
libavcodec/golomb.h
View File

@ -32,7 +32,7 @@
#include <stdint.h>
#include "get_bits.h"
#include "bitstream.h"
#include "put_bits.h"
#define INVALID_VLC 0x80000000
@ -50,26 +50,22 @@ extern const uint8_t ff_interleaved_dirac_golomb_vlc_code[256];
/**
* read unsigned exp golomb code.
*/
static inline int get_ue_golomb(GetBitContext *gb)
static inline int get_ue_golomb(BitstreamContext *bc)
{
unsigned int buf;
OPEN_READER(re, gb);
UPDATE_CACHE(re, gb);
buf = GET_CACHE(re, gb);
buf = bitstream_peek(bc, 32);
if (buf >= (1 << 27)) {
buf >>= 32 - 9;
LAST_SKIP_BITS(re, gb, ff_golomb_vlc_len[buf]);
CLOSE_READER(re, gb);
bitstream_skip(bc, ff_golomb_vlc_len[buf]);
return ff_ue_golomb_vlc_code[buf];
} else {
int log = 2 * av_log2(buf) - 31;
buf >>= log;
buf--;
LAST_SKIP_BITS(re, gb, 32 - log);
CLOSE_READER(re, gb);
bitstream_skip(bc, 32 - log);
return buf;
}
@ -78,48 +74,42 @@ static inline int get_ue_golomb(GetBitContext *gb)
/**
* Read an unsigned Exp-Golomb code in the range 0 to UINT32_MAX-1.
*/
static inline unsigned get_ue_golomb_long(GetBitContext *gb)
static inline unsigned get_ue_golomb_long(BitstreamContext *bc)
{
unsigned buf, log;
buf = show_bits_long(gb, 32);
buf = bitstream_peek(bc, 32);
log = 31 - av_log2(buf);
skip_bits_long(gb, log);
bitstream_skip(bc, log);
return get_bits_long(gb, log + 1) - 1;
return bitstream_read(bc, log + 1) - 1;
}
/**
* read unsigned exp golomb code, constraint to a max of 31.
* the return value is undefined if the stored value exceeds 31.
*/
static inline int get_ue_golomb_31(GetBitContext *gb)
static inline int get_ue_golomb_31(BitstreamContext *bc)
{
unsigned int buf;
OPEN_READER(re, gb);
UPDATE_CACHE(re, gb);
buf = GET_CACHE(re, gb);
buf = bitstream_peek(bc, 32);
buf >>= 32 - 9;
LAST_SKIP_BITS(re, gb, ff_golomb_vlc_len[buf]);
CLOSE_READER(re, gb);
bitstream_skip(bc, ff_golomb_vlc_len[buf]);
return ff_ue_golomb_vlc_code[buf];
}
static inline unsigned get_interleaved_ue_golomb(GetBitContext *gb)
static inline unsigned get_interleaved_ue_golomb(BitstreamContext *bc)
{
uint32_t buf;
OPEN_READER(re, gb);
UPDATE_CACHE(re, gb);
buf = GET_CACHE(re, gb);
buf = bitstream_peek(bc, 32);
if (buf & 0xAA800000) {
buf >>= 32 - 8;
LAST_SKIP_BITS(re, gb, ff_interleaved_golomb_vlc_len[buf]);
CLOSE_READER(re, gb);
bitstream_skip(bc, ff_interleaved_golomb_vlc_len[buf]);
return ff_interleaved_ue_golomb_vlc_code[buf];
} else {
@ -127,8 +117,7 @@ static inline unsigned get_interleaved_ue_golomb(GetBitContext *gb)
do {
buf >>= 32 - 8;
LAST_SKIP_BITS(re, gb,
FFMIN(ff_interleaved_golomb_vlc_len[buf], 8));
bitstream_skip(bc, FFMIN(ff_interleaved_golomb_vlc_len[buf], 8));
if (ff_interleaved_golomb_vlc_len[buf] != 9) {
ret <<= (ff_interleaved_golomb_vlc_len[buf] - 1) >> 1;
@ -136,11 +125,9 @@ static inline unsigned get_interleaved_ue_golomb(GetBitContext *gb)
break;
}
ret = (ret << 4) | ff_interleaved_dirac_golomb_vlc_code[buf];
UPDATE_CACHE(re, gb);
buf = GET_CACHE(re, gb);
} while (BITS_AVAILABLE(re, gb));
buf = bitstream_peek(bc, 32);
} while (bitstream_bits_left(bc) > 0);
CLOSE_READER(re, gb);
return ret - 1;
}
}
@ -148,54 +135,50 @@ static inline unsigned get_interleaved_ue_golomb(GetBitContext *gb)
/**
* read unsigned truncated exp golomb code.
*/
static inline int get_te0_golomb(GetBitContext *gb, int range)
static inline int get_te0_golomb(BitstreamContext *bc, int range)
{
assert(range >= 1);
if (range == 1)
return 0;
else if (range == 2)
return get_bits1(gb) ^ 1;
return bitstream_read_bit(bc) ^ 1;
else
return get_ue_golomb(gb);
return get_ue_golomb(bc);
}
/**
* read unsigned truncated exp golomb code.
*/
static inline int get_te_golomb(GetBitContext *gb, int range)
static inline int get_te_golomb(BitstreamContext *bc, int range)
{
assert(range >= 1);
if (range == 2)
return get_bits1(gb) ^ 1;
return bitstream_read_bit(bc) ^ 1;
else
return get_ue_golomb(gb);
return get_ue_golomb(bc);
}
/**
* read signed exp golomb code.
*/
static inline int get_se_golomb(GetBitContext *gb)
static inline int get_se_golomb(BitstreamContext *bc)
{
unsigned int buf;
OPEN_READER(re, gb);
UPDATE_CACHE(re, gb);
buf = GET_CACHE(re, gb);
buf = bitstream_peek(bc, 32);
if (buf >= (1 << 27)) {
buf >>= 32 - 9;
LAST_SKIP_BITS(re, gb, ff_golomb_vlc_len[buf]);
CLOSE_READER(re, gb);
bitstream_skip(bc, ff_golomb_vlc_len[buf]);
return ff_se_golomb_vlc_code[buf];
} else {
int log = 2 * av_log2(buf) - 31;
buf >>= log;
LAST_SKIP_BITS(re, gb, 32 - log);
CLOSE_READER(re, gb);
bitstream_skip(bc, 32 - log);
if (buf & 1)
buf = -(buf >> 1);
@ -206,9 +189,9 @@ static inline int get_se_golomb(GetBitContext *gb)
}
}
static inline int get_se_golomb_long(GetBitContext *gb)
static inline int get_se_golomb_long(BitstreamContext *bc)
{
unsigned int buf = get_ue_golomb_long(gb);
unsigned int buf = get_ue_golomb_long(bc);
if (buf & 1)
buf = (buf + 1) >> 1;
@ -218,25 +201,21 @@ static inline int get_se_golomb_long(GetBitContext *gb)
return buf;
}
static inline int get_interleaved_se_golomb(GetBitContext *gb)
static inline int get_interleaved_se_golomb(BitstreamContext *bc)
{
unsigned int buf;
OPEN_READER(re, gb);
UPDATE_CACHE(re, gb);
buf = GET_CACHE(re, gb);
buf = bitstream_peek(bc, 32);
if (buf & 0xAA800000) {
buf >>= 32 - 8;
LAST_SKIP_BITS(re, gb, ff_interleaved_golomb_vlc_len[buf]);
CLOSE_READER(re, gb);
bitstream_skip(bc, ff_interleaved_golomb_vlc_len[buf]);
return ff_interleaved_se_golomb_vlc_code[buf];
} else {
int log;
LAST_SKIP_BITS(re, gb, 8);
UPDATE_CACHE(re, gb);
buf |= 1 | (GET_CACHE(re, gb) >> 8);
bitstream_skip(bc, 8);
buf |= 1 | bitstream_peek(bc, 24);
if ((buf & 0xAAAAAAAA) == 0)
return INVALID_VLC;
@ -244,25 +223,20 @@ static inline int get_interleaved_se_golomb(GetBitContext *gb)
for (log = 31; (buf & 0x80000000) == 0; log--)
buf = (buf << 2) - ((buf << log) >> (log - 1)) + (buf >> 30);
LAST_SKIP_BITS(re, gb, 63 - 2 * log - 8);
CLOSE_READER(re, gb);
bitstream_skip(bc, 63 - 2 * log - 8);
return (signed) (((((buf << log) >> log) - 1) ^ -(buf & 0x1)) + 1) >> 1;
}
}
static inline int dirac_get_se_golomb(GetBitContext *gb)
static inline int dirac_get_se_golomb(BitstreamContext *bc)
{
uint32_t ret = get_interleaved_ue_golomb(gb);
uint32_t ret = get_interleaved_ue_golomb(bc);
if (ret) {
uint32_t buf;
OPEN_READER(re, gb);
UPDATE_CACHE(re, gb);
buf = SHOW_SBITS(re, gb, 1);
LAST_SKIP_BITS(re, gb, 1);
buf = bitstream_read_signed(bc, 1);
ret = (ret ^ buf) - buf;
CLOSE_READER(re, gb);
}
return ret;
@ -271,33 +245,25 @@ static inline int dirac_get_se_golomb(GetBitContext *gb)
/**
* read unsigned golomb rice code (ffv1).
*/
static inline int get_ur_golomb(GetBitContext *gb, int k, int limit,
static inline int get_ur_golomb(BitstreamContext *bc, int k, int limit,
int esc_len)
{
unsigned int buf;
int log;
OPEN_READER(re, gb);
UPDATE_CACHE(re, gb);
buf = GET_CACHE(re, gb);
buf = bitstream_peek(bc, 32);
log = av_log2(buf);
if (log > 31 - limit) {
buf >>= log - k;
buf += (30 - log) << k;
LAST_SKIP_BITS(re, gb, 32 + k - log);
CLOSE_READER(re, gb);
bitstream_skip(bc, 32 + k - log);
return buf;
} else {
LAST_SKIP_BITS(re, gb, limit);
UPDATE_CACHE(re, gb);
buf = SHOW_UBITS(re, gb, esc_len);
LAST_SKIP_BITS(re, gb, esc_len);
CLOSE_READER(re, gb);
bitstream_skip(bc, limit);
buf = bitstream_read(bc, esc_len);
return buf + limit - 1;
}
@ -306,48 +272,38 @@ static inline int get_ur_golomb(GetBitContext *gb, int k, int limit,
/**
* read unsigned golomb rice code (jpegls).
*/
static inline int get_ur_golomb_jpegls(GetBitContext *gb, int k, int limit,
static inline int get_ur_golomb_jpegls(BitstreamContext *bc, int k, int limit,
int esc_len)
{
unsigned int buf;
int log;
OPEN_READER(re, gb);
UPDATE_CACHE(re, gb);
buf = GET_CACHE(re, gb);
buf = bitstream_peek(bc, 32);
log = av_log2(buf);
if (log - k >= 32 - MIN_CACHE_BITS + (MIN_CACHE_BITS == 32) &&
32 - log < limit) {
if (log - k >= 1 && 32 - log < limit) {
buf >>= log - k;
buf += (30 - log) << k;
LAST_SKIP_BITS(re, gb, 32 + k - log);
CLOSE_READER(re, gb);
bitstream_skip(bc, 32 + k - log);
return buf;
} else {
int i;
for (i = 0; i < limit && SHOW_UBITS(re, gb, 1) == 0 && BITS_AVAILABLE(re, gb); i++) {
LAST_SKIP_BITS(re, gb, 1);
UPDATE_CACHE(re, gb);
}
SKIP_BITS(re, gb, 1);
for (i = 0; i < limit && bitstream_peek(bc, 1) == 0 && bitstream_bits_left(bc) > 0; i++)
bitstream_skip(bc, 1);
bitstream_skip(bc, 1);
if (i < limit - 1) {
if (k) {
buf = SHOW_UBITS(re, gb, k);
LAST_SKIP_BITS(re, gb, k);
buf = bitstream_read(bc, k);
} else {
buf = 0;
}
CLOSE_READER(re, gb);
return buf + (i << k);
} else if (i == limit - 1) {
buf = SHOW_UBITS(re, gb, esc_len);
LAST_SKIP_BITS(re, gb, esc_len);
CLOSE_READER(re, gb);
buf = bitstream_read(bc, esc_len);
return buf + 1;
} else
@ -358,10 +314,10 @@ static inline int get_ur_golomb_jpegls(GetBitContext *gb, int k, int limit,
/**
* read signed golomb rice code (ffv1).
*/
static inline int get_sr_golomb(GetBitContext *gb, int k, int limit,
static inline int get_sr_golomb(BitstreamContext *bc, int k, int limit,
int esc_len)
{
int v = get_ur_golomb(gb, k, limit, esc_len);
int v = get_ur_golomb(bc, k, limit, esc_len);
v++;
if (v & 1)
@ -375,27 +331,27 @@ static inline int get_sr_golomb(GetBitContext *gb, int k, int limit,
/**
* read signed golomb rice code (flac).
*/
static inline int get_sr_golomb_flac(GetBitContext *gb, int k, int limit,
static inline int get_sr_golomb_flac(BitstreamContext *bc, int k, int limit,
int esc_len)
{
int v = get_ur_golomb_jpegls(gb, k, limit, esc_len);
int v = get_ur_golomb_jpegls(bc, k, limit, esc_len);
return (v >> 1) ^ -(v & 1);
}
/**
* read unsigned golomb rice code (shorten).
*/
static inline unsigned int get_ur_golomb_shorten(GetBitContext *gb, int k)
static inline unsigned int get_ur_golomb_shorten(BitstreamContext *bc, int k)
{
return get_ur_golomb_jpegls(gb, k, INT_MAX, 0);
return get_ur_golomb_jpegls(bc, k, INT_MAX, 0);
}
/**
* read signed golomb rice code (shorten).
*/
static inline int get_sr_golomb_shorten(GetBitContext *gb, int k)
static inline int get_sr_golomb_shorten(BitstreamContext *bc, int k)
{
int uvar = get_ur_golomb_jpegls(gb, k + 1, INT_MAX, 0);
int uvar = get_ur_golomb_jpegls(bc, k + 1, INT_MAX, 0);
if (uvar & 1)
return ~(uvar >> 1);
else
@ -404,13 +360,13 @@ static inline int get_sr_golomb_shorten(GetBitContext *gb, int k)
#ifdef TRACE
static inline int get_ue(GetBitContext *s, const char *file, const char *func,
static inline int get_ue(BitstreamContext *s, const char *file, const char *func,
int line)
{
int show = show_bits(s, 24);
int pos = get_bits_count(s);
int show = bitstream_peek(s, 24);
int pos = bitstream_tell(s);
int i = get_ue_golomb(s);
int len = get_bits_count(s) - pos;
int len = bitstream_tell(s) - pos;
int bits = show >> (24 - len);
av_log(NULL, AV_LOG_DEBUG, "%5d %2d %3d ue @%5d in %s %s:%d\n",
@ -419,13 +375,13 @@ static inline int get_ue(GetBitContext *s, const char *file, const char *func,
return i;
}
static inline int get_se(GetBitContext *s, const char *file, const char *func,
static inline int get_se(BitstreamContext *s, const char *file, const char *func,
int line)
{
int show = show_bits(s, 24);
int pos = get_bits_count(s);
int show = bitstream_peek(s, 24);
int pos = bitstream_tell(s);
int i = get_se_golomb(s);
int len = get_bits_count(s) - pos;
int len = bitstream_tell(s) - pos;
int bits = show >> (24 - len);
av_log(NULL, AV_LOG_DEBUG, "%5d %2d %3d se @%5d in %s %s:%d\n",
@ -434,13 +390,13 @@ static inline int get_se(GetBitContext *s, const char *file, const char *func,
return i;
}
static inline int get_te(GetBitContext *s, int r, char *file, const char *func,
static inline int get_te(BitstreamContext *s, int r, char *file, const char *func,
int line)
{
int show = show_bits(s, 24);
int pos = get_bits_count(s);
int show = bitstream_peek(s, 24);
int pos = bitstream_tell(s);
int i = get_te0_golomb(s, r);
int len = get_bits_count(s) - pos;
int len = bitstream_tell(s) - pos;
int bits = show >> (24 - len);
av_log(NULL, AV_LOG_DEBUG, "%5d %2d %3d te @%5d in %s %s:%d\n",

573
libavcodec/golomb_legacy.h Normal file
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@ -0,0 +1,573 @@
/*
* exp golomb vlc stuff
* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
* Copyright (c) 2004 Alex Beregszaszi
*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* @brief
* exp golomb vlc stuff
* @author Michael Niedermayer <michaelni@gmx.at> and Alex Beregszaszi
*/
#ifndef AVCODEC_GOLOMB_H
#define AVCODEC_GOLOMB_H
#include <stdint.h>
#include "get_bits.h"
#include "put_bits.h"
#define INVALID_VLC 0x80000000
extern const uint8_t ff_golomb_vlc_len[512];
extern const uint8_t ff_ue_golomb_vlc_code[512];
extern const int8_t ff_se_golomb_vlc_code[512];
extern const uint8_t ff_ue_golomb_len[256];
extern const uint8_t ff_interleaved_golomb_vlc_len[256];
extern const uint8_t ff_interleaved_ue_golomb_vlc_code[256];
extern const int8_t ff_interleaved_se_golomb_vlc_code[256];
extern const uint8_t ff_interleaved_dirac_golomb_vlc_code[256];
/**
* read unsigned exp golomb code.
*/
static inline int get_ue_golomb(GetBitContext *gb)
{
unsigned int buf;
OPEN_READER(re, gb);
UPDATE_CACHE(re, gb);
buf = GET_CACHE(re, gb);
if (buf >= (1 << 27)) {
buf >>= 32 - 9;
LAST_SKIP_BITS(re, gb, ff_golomb_vlc_len[buf]);
CLOSE_READER(re, gb);
return ff_ue_golomb_vlc_code[buf];
} else {
int log = 2 * av_log2(buf) - 31;
buf >>= log;
buf--;
LAST_SKIP_BITS(re, gb, 32 - log);
CLOSE_READER(re, gb);
return buf;
}
}
/**
* Read an unsigned Exp-Golomb code in the range 0 to UINT32_MAX-1.
*/
static inline unsigned get_ue_golomb_long(GetBitContext *gb)
{
unsigned buf, log;
buf = show_bits_long(gb, 32);
log = 31 - av_log2(buf);
skip_bits_long(gb, log);
return get_bits_long(gb, log + 1) - 1;
}
/**
* read unsigned exp golomb code, constraint to a max of 31.
* the return value is undefined if the stored value exceeds 31.
*/
static inline int get_ue_golomb_31(GetBitContext *gb)
{
unsigned int buf;
OPEN_READER(re, gb);
UPDATE_CACHE(re, gb);
buf = GET_CACHE(re, gb);
buf >>= 32 - 9;
LAST_SKIP_BITS(re, gb, ff_golomb_vlc_len[buf]);
CLOSE_READER(re, gb);
return ff_ue_golomb_vlc_code[buf];
}
static inline unsigned get_interleaved_ue_golomb(GetBitContext *gb)
{
uint32_t buf;
OPEN_READER(re, gb);
UPDATE_CACHE(re, gb);
buf = GET_CACHE(re, gb);
if (buf & 0xAA800000) {
buf >>= 32 - 8;
LAST_SKIP_BITS(re, gb, ff_interleaved_golomb_vlc_len[buf]);
CLOSE_READER(re, gb);
return ff_interleaved_ue_golomb_vlc_code[buf];
} else {
unsigned ret = 1;
do {
buf >>= 32 - 8;
LAST_SKIP_BITS(re, gb,
FFMIN(ff_interleaved_golomb_vlc_len[buf], 8));
if (ff_interleaved_golomb_vlc_len[buf] != 9) {
ret <<= (ff_interleaved_golomb_vlc_len[buf] - 1) >> 1;
ret |= ff_interleaved_dirac_golomb_vlc_code[buf];
break;
}
ret = (ret << 4) | ff_interleaved_dirac_golomb_vlc_code[buf];
UPDATE_CACHE(re, gb);
buf = GET_CACHE(re, gb);
} while (BITS_AVAILABLE(re, gb));
CLOSE_READER(re, gb);
return ret - 1;
}
}
/**
* read unsigned truncated exp golomb code.
*/
static inline int get_te0_golomb(GetBitContext *gb, int range)
{
assert(range >= 1);
if (range == 1)
return 0;
else if (range == 2)
return get_bits1(gb) ^ 1;
else
return get_ue_golomb(gb);
}
/**
* read unsigned truncated exp golomb code.
*/
static inline int get_te_golomb(GetBitContext *gb, int range)
{
assert(range >= 1);
if (range == 2)
return get_bits1(gb) ^ 1;
else
return get_ue_golomb(gb);
}
/**
* read signed exp golomb code.
*/
static inline int get_se_golomb(GetBitContext *gb)
{
unsigned int buf;
OPEN_READER(re, gb);
UPDATE_CACHE(re, gb);
buf = GET_CACHE(re, gb);
if (buf >= (1 << 27)) {
buf >>= 32 - 9;
LAST_SKIP_BITS(re, gb, ff_golomb_vlc_len[buf]);
CLOSE_READER(re, gb);
return ff_se_golomb_vlc_code[buf];
} else {
int log = 2 * av_log2(buf) - 31;
buf >>= log;
LAST_SKIP_BITS(re, gb, 32 - log);
CLOSE_READER(re, gb);
if (buf & 1)
buf = -(buf >> 1);
else
buf = (buf >> 1);
return buf;
}
}
static inline int get_se_golomb_long(GetBitContext *gb)
{
unsigned int buf = get_ue_golomb_long(gb);
if (buf & 1)
buf = (buf + 1) >> 1;
else
buf = -(buf >> 1);
return buf;
}
static inline int get_interleaved_se_golomb(GetBitContext *gb)
{
unsigned int buf;
OPEN_READER(re, gb);
UPDATE_CACHE(re, gb);
buf = GET_CACHE(re, gb);
if (buf & 0xAA800000) {
buf >>= 32 - 8;
LAST_SKIP_BITS(re, gb, ff_interleaved_golomb_vlc_len[buf]);
CLOSE_READER(re, gb);
return ff_interleaved_se_golomb_vlc_code[buf];
} else {
int log;
LAST_SKIP_BITS(re, gb, 8);
UPDATE_CACHE(re, gb);
buf |= 1 | (GET_CACHE(re, gb) >> 8);
if ((buf & 0xAAAAAAAA) == 0)
return INVALID_VLC;
for (log = 31; (buf & 0x80000000) == 0; log--)
buf = (buf << 2) - ((buf << log) >> (log - 1)) + (buf >> 30);
LAST_SKIP_BITS(re, gb, 63 - 2 * log - 8);
CLOSE_READER(re, gb);
return (signed) (((((buf << log) >> log) - 1) ^ -(buf & 0x1)) + 1) >> 1;
}
}
static inline int dirac_get_se_golomb(GetBitContext *gb)
{
uint32_t ret = get_interleaved_ue_golomb(gb);
if (ret) {
uint32_t buf;
OPEN_READER(re, gb);
UPDATE_CACHE(re, gb);
buf = SHOW_SBITS(re, gb, 1);
LAST_SKIP_BITS(re, gb, 1);
ret = (ret ^ buf) - buf;
CLOSE_READER(re, gb);
}
return ret;
}
/**
* read unsigned golomb rice code (ffv1).
*/
static inline int get_ur_golomb(GetBitContext *gb, int k, int limit,
int esc_len)
{
unsigned int buf;
int log;
OPEN_READER(re, gb);
UPDATE_CACHE(re, gb);
buf = GET_CACHE(re, gb);
log = av_log2(buf);
if (log > 31 - limit) {
buf >>= log - k;
buf += (30 - log) << k;
LAST_SKIP_BITS(re, gb, 32 + k - log);
CLOSE_READER(re, gb);
return buf;
} else {
LAST_SKIP_BITS(re, gb, limit);
UPDATE_CACHE(re, gb);
buf = SHOW_UBITS(re, gb, esc_len);
LAST_SKIP_BITS(re, gb, esc_len);
CLOSE_READER(re, gb);
return buf + limit - 1;
}
}
/**
* read unsigned golomb rice code (jpegls).
*/
static inline int get_ur_golomb_jpegls(GetBitContext *gb, int k, int limit,
int esc_len)
{
unsigned int buf;
int log;
OPEN_READER(re, gb);
UPDATE_CACHE(re, gb);
buf = GET_CACHE(re, gb);
log = av_log2(buf);
if (log - k >= 32 - MIN_CACHE_BITS + (MIN_CACHE_BITS == 32) &&
32 - log < limit) {
buf >>= log - k;
buf += (30 - log) << k;
LAST_SKIP_BITS(re, gb, 32 + k - log);
CLOSE_READER(re, gb);
return buf;
} else {
int i;
for (i = 0; i < limit && SHOW_UBITS(re, gb, 1) == 0 && BITS_AVAILABLE(re, gb); i++) {
LAST_SKIP_BITS(re, gb, 1);
UPDATE_CACHE(re, gb);
}
SKIP_BITS(re, gb, 1);
if (i < limit - 1) {
if (k) {
buf = SHOW_UBITS(re, gb, k);
LAST_SKIP_BITS(re, gb, k);
} else {
buf = 0;
}
CLOSE_READER(re, gb);
return buf + (i << k);
} else if (i == limit - 1) {
buf = SHOW_UBITS(re, gb, esc_len);
LAST_SKIP_BITS(re, gb, esc_len);
CLOSE_READER(re, gb);
return buf + 1;
} else
return -1;
}
}
/**
* read signed golomb rice code (ffv1).
*/
static inline int get_sr_golomb(GetBitContext *gb, int k, int limit,
int esc_len)
{
int v = get_ur_golomb(gb, k, limit, esc_len);
v++;
if (v & 1)
return v >> 1;
else
return -(v >> 1);
// return (v>>1) ^ -(v&1);
}
/**
* read signed golomb rice code (flac).
*/
static inline int get_sr_golomb_flac(GetBitContext *gb, int k, int limit,
int esc_len)
{
int v = get_ur_golomb_jpegls(gb, k, limit, esc_len);
return (v >> 1) ^ -(v & 1);
}
/**
* read unsigned golomb rice code (shorten).
*/
static inline unsigned int get_ur_golomb_shorten(GetBitContext *gb, int k)
{
return get_ur_golomb_jpegls(gb, k, INT_MAX, 0);
}
/**
* read signed golomb rice code (shorten).
*/
static inline int get_sr_golomb_shorten(GetBitContext *gb, int k)
{
int uvar = get_ur_golomb_jpegls(gb, k + 1, INT_MAX, 0);
if (uvar & 1)
return ~(uvar >> 1);
else
return uvar >> 1;
}
#ifdef TRACE
static inline int get_ue(GetBitContext *s, const char *file, const char *func,
int line)
{
int show = show_bits(s, 24);
int pos = get_bits_count(s);
int i = get_ue_golomb(s);
int len = get_bits_count(s) - pos;
int bits = show >> (24 - len);
av_log(NULL, AV_LOG_DEBUG, "%5d %2d %3d ue @%5d in %s %s:%d\n",
bits, len, i, pos, file, func, line);
return i;
}
static inline int get_se(GetBitContext *s, const char *file, const char *func,
int line)
{
int show = show_bits(s, 24);
int pos = get_bits_count(s);
int i = get_se_golomb(s);
int len = get_bits_count(s) - pos;
int bits = show >> (24 - len);
av_log(NULL, AV_LOG_DEBUG, "%5d %2d %3d se @%5d in %s %s:%d\n",
bits, len, i, pos, file, func, line);
return i;
}
static inline int get_te(GetBitContext *s, int r, char *file, const char *func,
int line)
{
int show = show_bits(s, 24);
int pos = get_bits_count(s);
int i = get_te0_golomb(s, r);
int len = get_bits_count(s) - pos;
int bits = show >> (24 - len);
av_log(NULL, AV_LOG_DEBUG, "%5d %2d %3d te @%5d in %s %s:%d\n",
bits, len, i, pos, file, func, line);
return i;
}
#define get_ue_golomb(a) get_ue(a, __FILE__, __func__, __LINE__)
#define get_se_golomb(a) get_se(a, __FILE__, __func__, __LINE__)
#define get_te_golomb(a, r) get_te(a, r, __FILE__, __func__, __LINE__)
#define get_te0_golomb(a, r) get_te(a, r, __FILE__, __func__, __LINE__)
#endif /* TRACE */
/**
* write unsigned exp golomb code.
*/
static inline void set_ue_golomb(PutBitContext *pb, int i)
{
assert(i >= 0);
if (i < 256)
put_bits(pb, ff_ue_golomb_len[i], i + 1);
else {
int e = av_log2(i + 1);
put_bits(pb, 2 * e + 1, i + 1);
}
}
/**
* write truncated unsigned exp golomb code.
*/
static inline void set_te_golomb(PutBitContext *pb, int i, int range)
{
assert(range >= 1);
assert(i <= range);
if (range == 2)
put_bits(pb, 1, i ^ 1);
else
set_ue_golomb(pb, i);
}
/**
* write signed exp golomb code. 16 bits at most.
*/
static inline void set_se_golomb(PutBitContext *pb, int i)
{
i = 2 * i - 1;
if (i < 0)
i ^= -1; //FIXME check if gcc does the right thing
set_ue_golomb(pb, i);
}
/**
* write unsigned golomb rice code (ffv1).
*/
static inline void set_ur_golomb(PutBitContext *pb, int i, int k, int limit,
int esc_len)
{
int e;
assert(i >= 0);
e = i >> k;
if (e < limit)
put_bits(pb, e + k + 1, (1 << k) + (i & ((1 << k) - 1)));
else
put_bits(pb, limit + esc_len, i - limit + 1);
}
/**
* write unsigned golomb rice code (jpegls).
*/
static inline void set_ur_golomb_jpegls(PutBitContext *pb, int i, int k,
int limit, int esc_len)
{
int e;
assert(i >= 0);
e = (i >> k) + 1;
if (e < limit) {
while (e > 31) {
put_bits(pb, 31, 0);
e -= 31;
}
put_bits(pb, e, 1);
if (k)
put_sbits(pb, k, i);
} else {
while (limit > 31) {
put_bits(pb, 31, 0);
limit -= 31;
}
put_bits(pb, limit, 1);
put_bits(pb, esc_len, i - 1);
}
}
/**
* write signed golomb rice code (ffv1).
*/
static inline void set_sr_golomb(PutBitContext *pb, int i, int k, int limit,
int esc_len)
{
int v;
v = -2 * i - 1;
v ^= (v >> 31);
set_ur_golomb(pb, v, k, limit, esc_len);
}
/**
* write signed golomb rice code (flac).
*/
static inline void set_sr_golomb_flac(PutBitContext *pb, int i, int k,
int limit, int esc_len)
{
int v;
v = -2 * i - 1;
v ^= (v >> 31);
set_ur_golomb_jpegls(pb, v, k, limit, esc_len);
}
#endif /* AVCODEC_GOLOMB_H */

2
libavcodec/h264_cavlc.c
View File

@ -32,7 +32,7 @@
#include "h264dec.h"
#include "h264_mvpred.h"
#include "h264data.h"
#include "golomb.h"
#include "golomb_legacy.h"
#include "mpegutils.h"
#include <assert.h>

2
libavcodec/h264_parse.c
View File

@ -18,7 +18,7 @@
#include "bytestream.h"
#include "get_bits.h"
#include "golomb.h"
#include "golomb_legacy.h"
#include "h264.h"
#include "h264dec.h"
#include "h264_parse.h"

2
libavcodec/h264_parser.c
View File

@ -36,7 +36,7 @@
#include "avcodec.h"
#include "get_bits.h"
#include "golomb.h"
#include "golomb_legacy.h"
#include "h264.h"
#include "h264_sei.h"
#include "h264_ps.h"

3
libavcodec/h264_ps.c
View File

@ -28,12 +28,13 @@
#include <inttypes.h>
#include "libavutil/imgutils.h"
#include "golomb_legacy.h"
#include "internal.h"
#include "mathops.h"
#include "avcodec.h"
#include "h264data.h"
#include "h264_ps.h"
#include "golomb.h"
#define MAX_LOG2_MAX_FRAME_NUM (12 + 4)
#define MIN_LOG2_MAX_FRAME_NUM 4

2
libavcodec/h264_refs.c
View File

@ -27,11 +27,11 @@
#include <inttypes.h>
#include "golomb_legacy.h"
#include "internal.h"
#include "avcodec.h"
#include "h264.h"
#include "h264dec.h"
#include "golomb.h"
#include "mpegutils.h"
#include <assert.h>

2
libavcodec/h264_sei.c
View File

@ -27,7 +27,7 @@
#include "avcodec.h"
#include "get_bits.h"
#include "golomb.h"
#include "golomb_legacy.h"
#include "h264_ps.h"
#include "h264_sei.h"
#include "internal.h"

2
libavcodec/h264_slice.c
View File

@ -34,6 +34,7 @@
#include "cabac.h"
#include "cabac_functions.h"
#include "error_resilience.h"
#include "golomb_legacy.h"
#include "avcodec.h"
#include "h264.h"
#include "h264dec.h"
@ -41,7 +42,6 @@
#include "h264chroma.h"
#include "h264_mvpred.h"
#include "h264_ps.h"
#include "golomb.h"
#include "mathops.h"
#include "mpegutils.h"
#include "rectangle.h"

2
libavcodec/h264dec.c
View File

@ -36,6 +36,7 @@
#include "cabac_functions.h"
#include "error_resilience.h"
#include "avcodec.h"
#include "golomb_legacy.h"
#include "h264.h"
#include "h264dec.h"
#include "h2645_parse.h"
@ -43,7 +44,6 @@
#include "h264chroma.h"
#include "h264_mvpred.h"
#include "h264_ps.h"
#include "golomb.h"
#include "mathops.h"
#include "me_cmp.h"
#include "mpegutils.h"

2
libavcodec/hevc_parser.c
View File

@ -22,7 +22,7 @@
#include "libavutil/common.h"
#include "golomb.h"
#include "golomb_legacy.h"
#include "hevc.h"
#include "hevcdec.h"
#include "h2645_parse.h"

2
libavcodec/hevc_ps.c
View File

@ -25,7 +25,7 @@
#include "libavutil/imgutils.h"
#include "golomb.h"
#include "golomb_legacy.h"
#include "hevc_data.h"
#include "hevc_ps.h"

2
libavcodec/hevc_ps_enc.c
View File

@ -18,7 +18,7 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "golomb.h"
#include "golomb_legacy.h"
#include "hevc_ps.h"
#include "put_bits.h"

2
libavcodec/hevc_sei.c
View File

@ -22,7 +22,7 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "golomb.h"
#include "golomb_legacy.h"
#include "hevcdec.h"
enum HEVC_SEI_TYPE {

2
libavcodec/hevcdec.c
View File

@ -35,7 +35,7 @@
#include "bswapdsp.h"
#include "bytestream.h"
#include "cabac_functions.h"
#include "golomb.h"
#include "golomb_legacy.h"
#include "hevc.h"
#include "hevc_data.h"
#include "hevcdec.h"

2
libavcodec/jpeglsdec.c
View File

@ -27,7 +27,7 @@
#include "avcodec.h"
#include "get_bits.h"
#include "golomb.h"
#include "golomb_legacy.h"
#include "internal.h"
#include "mathops.h"
#include "mjpeg.h"

2
libavcodec/jpeglsenc.c
View File

@ -27,7 +27,7 @@
#include "avcodec.h"
#include "get_bits.h"
#include "golomb.h"
#include "golomb_legacy.h"
#include "internal.h"
#include "mathops.h"
#include "mjpeg.h"

2
libavcodec/loco.c
View File

@ -26,7 +26,7 @@
#include "avcodec.h"
#include "get_bits.h"
#include "golomb.h"
#include "golomb_legacy.h"
#include "internal.h"
#include "mathops.h"

2
libavcodec/ralf.c
View File

@ -30,7 +30,7 @@
#include "libavutil/channel_layout.h"
#include "avcodec.h"
#include "get_bits.h"
#include "golomb.h"
#include "golomb_legacy.h"
#include "internal.h"
#include "unary_legacy.h"
#include "ralfdata.h"

2
libavcodec/rv30.c
View File

@ -25,9 +25,9 @@
*/
#include "avcodec.h"
#include "golomb_legacy.h"
#include "mpegutils.h"
#include "mpegvideo.h"
#include "golomb.h"
#include "rv34.h"
#include "rv30data.h"

2
libavcodec/rv34.c
View File

@ -28,9 +28,9 @@
#include "avcodec.h"
#include "error_resilience.h"
#include "golomb_legacy.h"
#include "mpegutils.h"
#include "mpegvideo.h"
#include "golomb.h"
#include "internal.h"
#include "mathops.h"
#include "mpeg_er.h"

2
libavcodec/rv40.c
View File

@ -27,9 +27,9 @@
#include "libavutil/imgutils.h"
#include "avcodec.h"
#include "golomb_legacy.h"
#include "mpegutils.h"
#include "mpegvideo.h"
#include "golomb.h"
#include "rv34.h"
#include "rv40vlc2.h"

2
libavcodec/shorten.c
View File

@ -29,7 +29,7 @@
#include "avcodec.h"
#include "bytestream.h"
#include "get_bits.h"
#include "golomb.h"
#include "golomb_legacy.h"
#include "internal.h"
#define MAX_CHANNELS 8

3
libavcodec/svq3.c
View File

@ -43,12 +43,13 @@
#include <inttypes.h>
#include "libavutil/attributes.h"
#include "golomb_legacy.h"
#include "internal.h"
#include "avcodec.h"
#include "mpegutils.h"
#include "h264dec.h"
#include "h264data.h"
#include "golomb.h"
#include "hpeldsp.h"
#include "mathops.h"
#include "rectangle.h"

22
libavcodec/tests/golomb.c
View File

@ -21,7 +21,7 @@
#include "libavutil/mem.h"
#include "libavcodec/get_bits.h"
#include "libavcodec/bitstream.h"
#include "libavcodec/put_bits.h"
#include "libavcodec/golomb.h"
@ -33,7 +33,7 @@ int main(void)
int i, ret = 0;
uint8_t *temp;
PutBitContext pb;
GetBitContext gb;
BitstreamContext bc;
temp = av_malloc(SIZE);
if (!temp)
@ -44,11 +44,11 @@ int main(void)
set_ue_golomb(&pb, i);
flush_put_bits(&pb);
init_get_bits(&gb, temp, 8 * SIZE);
bitstream_init8(&bc, temp, SIZE);
for (i = 0; i < COUNT; i++) {
int j, s = show_bits(&gb, 25);
int j, s = bitstream_peek(&bc, 25);
j = get_ue_golomb(&gb);
j = get_ue_golomb(&bc);
if (j != i) {
fprintf(stderr, "get_ue_golomb: expected %d, got %d. bits: %7x\n",
i, j, s);
@ -62,11 +62,11 @@ int main(void)
set_ue_golomb(&pb, EXTEND(i));
flush_put_bits(&pb);
init_get_bits(&gb, temp, 8 * SIZE);
bitstream_init8(&bc, temp, SIZE);
for (i = 0; i < COUNT; i++) {
int j, s = show_bits_long(&gb, 32);
int j, s = bitstream_peek(&bc, 32);
j = get_ue_golomb_long(&gb);
j = get_ue_golomb_long(&bc);
if (j != EXTEND(i)) {
fprintf(stderr, "get_ue_golomb_long: expected %d, got %d. "
"bits: %8x\n", EXTEND(i), j, s);
@ -79,11 +79,11 @@ int main(void)
set_se_golomb(&pb, i - COUNT / 2);
flush_put_bits(&pb);
init_get_bits(&gb, temp, 8 * SIZE);
bitstream_init8(&bc, temp, SIZE);
for (i = 0; i < COUNT; i++) {
int j, s = show_bits(&gb, 25);
int j, s = bitstream_peek(&bc, 25);
j = get_se_golomb(&gb);
j = get_se_golomb(&bc);
if (j != i - COUNT / 2) {
fprintf(stderr, "get_se_golomb: expected %d, got %d. bits: %7x\n",
i - COUNT / 2, j, s);

2
libavformat/hevc.c
View File

@ -20,7 +20,7 @@
#include "libavcodec/avcodec.h"
#include "libavcodec/get_bits.h"
#include "libavcodec/golomb.h"
#include "libavcodec/golomb_legacy.h"
#include "libavcodec/hevc.h"
#include "libavutil/intreadwrite.h"
#include "avc.h"