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ffmpeg.wasm-core
Commit 2c993e8b authored by Vittorio Giovara's avatar Vittorio Giovara Committed by Diego Biurrun
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golomb: K&R formatting cosmetics 

Signed-off-by: 's avatarDiego Biurrun <diego@biurrun.de>
parent 1ce3ec24
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Showing with 178 additions and 136 deletions
libavcodec/golomb.h
View file @ 2c993e8b
......@@ -31,6 +31,7 @@
#define AVCODEC_GOLOMB_H
#include <stdint.h>
#include "get_bits.h"
#include "put_bits.h"
......@@ -46,27 +47,27 @@ 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){
static inline int get_ue_golomb(GetBitContext *gb)
{
unsigned int buf;
int log;
OPEN_READER(re, gb);
UPDATE_CACHE(re, gb);
buf=GET_CACHE(re, gb);
buf = GET_CACHE(re, gb);
if(buf >= (1<<27)){
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{
log= 2*av_log2(buf) - 31;
buf>>= log;
} else {
log = 2 * av_log2(buf) - 31;
buf >>= log;
buf--;
LAST_SKIP_BITS(re, gb, 32 - log);
CLOSE_READER(re, gb);
......@@ -89,16 +90,17 @@ static inline unsigned get_ue_golomb_long(GetBitContext *gb)
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){
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 = GET_CACHE(re, gb);
buf >>= 32 - 9;
LAST_SKIP_BITS(re, gb, ff_golomb_vlc_len[buf]);
......@@ -113,24 +115,25 @@ static inline unsigned svq3_get_ue_golomb(GetBitContext *gb)
OPEN_READER(re, gb);
UPDATE_CACHE(re, gb);
buf=GET_CACHE(re, gb);
buf = GET_CACHE(re, gb);
if(buf&0xAA800000){
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{
} else {
unsigned ret = 1;
do {
buf >>= 32 - 8;
LAST_SKIP_BITS(re, gb, FFMIN(ff_interleaved_golomb_vlc_len[buf], 8));
LAST_SKIP_BITS(re, gb,
FFMIN(ff_interleaved_golomb_vlc_len[buf], 8));
if (ff_interleaved_golomb_vlc_len[buf] != 9){
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];
ret |= ff_interleaved_dirac_golomb_vlc_code[buf];
break;
}
ret = (ret << 4) | ff_interleaved_dirac_golomb_vlc_code[buf];
......@@ -146,90 +149,100 @@ static inline unsigned svq3_get_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(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);
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){
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);
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){
static inline int get_se_golomb(GetBitContext *gb)
{
unsigned int buf;
int log;
OPEN_READER(re, gb);
UPDATE_CACHE(re, gb);
buf=GET_CACHE(re, gb);
buf = GET_CACHE(re, gb);
if(buf >= (1<<27)){
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{
log= 2*av_log2(buf) - 31;
buf>>= log;
} else {
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);
if (buf & 1)
buf = -(buf >> 1);
else
buf = (buf >> 1);
return buf;
}
}
static inline int svq3_get_se_golomb(GetBitContext *gb){
static inline int svq3_get_se_golomb(GetBitContext *gb)
{
unsigned int buf;
int log;
OPEN_READER(re, gb);
UPDATE_CACHE(re, gb);
buf=GET_CACHE(re, gb);
buf = GET_CACHE(re, gb);
if(buf&0xAA800000){
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{
} else {
LAST_SKIP_BITS(re, gb, 8);
UPDATE_CACHE(re, gb);
buf |= 1 | (GET_CACHE(re, gb) >> 8);
if((buf & 0xAAAAAAAA) == 0)
if ((buf & 0xAAAAAAAA) == 0)
return INVALID_VLC;
for(log=31; (buf & 0x80000000) == 0; log--){
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);
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){
static inline int dirac_get_se_golomb(GetBitContext *gb)
{
uint32_t buf;
uint32_t ret;
......@@ -250,24 +263,26 @@ 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, int esc_len){
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);
buf = GET_CACHE(re, gb);
log= av_log2(buf);
log = av_log2(buf);
if(log > 31-limit){
if (log > 31 - limit) {
buf >>= log - k;
buf += (30-log)<<k;
buf += (30 - log) << k;
LAST_SKIP_BITS(re, gb, 32 + k - log);
CLOSE_READER(re, gb);
return buf;
}else{
} else {
LAST_SKIP_BITS(re, gb, limit);
UPDATE_CACHE(re, gb);
......@@ -283,24 +298,27 @@ static inline int get_ur_golomb(GetBitContext *gb, int k, int limit, int esc_len
/**
* read unsigned golomb rice code (jpegls).
*/
static inline int get_ur_golomb_jpegls(GetBitContext *gb, int k, int limit, int esc_len){
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);
buf = GET_CACHE(re, gb);
log= av_log2(buf);
log = av_log2(buf);
if(log - k >= 32-MIN_CACHE_BITS+(MIN_CACHE_BITS==32) && 32-log < limit){
if (log - k >= 32 - MIN_CACHE_BITS + (MIN_CACHE_BITS == 32) &&
32 - log < limit) {
buf >>= log - k;
buf += (30-log)<<k;
buf += (30 - log) << k;
LAST_SKIP_BITS(re, gb, 32 + k - log);
CLOSE_READER(re, gb);
return buf;
}else{
} else {
int i;
for (i = 0; i < limit && SHOW_UBITS(re, gb, 1) == 0 && HAVE_BITS_REMAINING(re, gb); i++) {
LAST_SKIP_BITS(re, gb, 1);
......@@ -308,23 +326,23 @@ static inline int get_ur_golomb_jpegls(GetBitContext *gb, int k, int limit, int
}
SKIP_BITS(re, gb, 1);
if(i < limit - 1){
if(k){
if (i < limit - 1) {
if (k) {
buf = SHOW_UBITS(re, gb, k);
LAST_SKIP_BITS(re, gb, k);
}else{
buf=0;
} else {
buf = 0;
}
CLOSE_READER(re, gb);
return buf + (i<<k);
}else if(i == limit - 1){
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
} else
return -1;
}
}
......@@ -332,12 +350,16 @@ static inline int get_ur_golomb_jpegls(GetBitContext *gb, int k, int limit, int
/**
* 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);
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);
if (v & 1)
return v >> 1;
else
return -(v >> 1);
// return (v>>1) ^ -(v&1);
}
......@@ -345,22 +367,25 @@ static inline int get_sr_golomb(GetBitContext *gb, int k, int limit, int esc_len
/**
* 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);
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);
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)
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)
......@@ -369,22 +394,21 @@ static inline int get_sr_golomb_shorten(GetBitContext* gb, int k)
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);
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);
print_bin(bits, len);
av_log(NULL, AV_LOG_DEBUG, "%5d %2d %3d ue @%5d in %s %s:%d\n", bits, len, i, pos, file, func, line);
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;
}
......@@ -392,87 +416,98 @@ static inline int get_ue(GetBitContext *s, const char *file, const char *func,
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);
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);
print_bin(bits, len);
av_log(NULL, AV_LOG_DEBUG, "%5d %2d %3d se @%5d in %s %s:%d\n", bits, len, i, pos, file, func, line);
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);
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);
print_bin(bits, len);
av_log(NULL, AV_LOG_DEBUG, "%5d %2d %3d te @%5d in %s %s:%d\n", bits, len, i, pos, file, func, line);
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__, __PRETTY_FUNCTION__, __LINE__)
#define get_se_golomb(a) get_se(a, __FILE__, __PRETTY_FUNCTION__, __LINE__)
#define get_te_golomb(a, r) get_te(a, r, __FILE__, __PRETTY_FUNCTION__, __LINE__)
#define get_te_golomb(a, r) get_te(a, r, __FILE__, __PRETTY_FUNCTION__, __LINE__)
#define get_te0_golomb(a, r) get_te(a, r, __FILE__, __PRETTY_FUNCTION__, __LINE__)
#endif
#endif /* TRACE */
/**
* write unsigned exp golomb code.
*/
static inline void set_ue_golomb(PutBitContext *pb, int i){
static inline void set_ue_golomb(PutBitContext *pb, int i)
{
int e;
assert(i>=0);
assert(i >= 0);
#if 0
if(i=0){
if (i = 0) {
put_bits(pb, 1, 1);
return;
}
#endif
if(i<256)
put_bits(pb, ff_ue_golomb_len[i], i+1);
else{
e= av_log2(i+1);
put_bits(pb, 2*e+1, i+1);
if (i < 256)
put_bits(pb, ff_ue_golomb_len[i], i + 1);
else {
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){
static inline void set_te_golomb(PutBitContext *pb, int i, int range)
{
assert(range >= 1);
assert(i<=range);
assert(i <= range);
if(range==2) put_bits(pb, 1, i^1);
else set_ue_golomb(pb, i);
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){
static inline void set_se_golomb(PutBitContext *pb, int i)
{
#if 0
if(i<=0) i= -2*i;
else i= 2*i-1;
if (i <= 0)
i = -2 * i;
else
i = 2 * i - 1;
#elif 1
i= 2*i-1;
if(i<0) i^= -1; //FIXME check if gcc does the right thing
i = 2 * i - 1;
if (i < 0)
i ^= -1; //FIXME check if gcc does the right thing
#else
i= 2*i-1;
i^= (i>>31);
i = 2 * i - 1;
i ^= (i >> 31);
#endif
set_ue_golomb(pb, i);
}
......@@ -480,42 +515,45 @@ static inline void set_se_golomb(PutBitContext *pb, int i){
/**
* write unsigned golomb rice code (ffv1).
*/
static inline void set_ur_golomb(PutBitContext *pb, int i, int k, int limit, int esc_len){
static inline void set_ur_golomb(PutBitContext *pb, int i, int k, int limit,
int esc_len)
{
int e;
assert(i>=0);
assert(i >= 0);
e= i>>k;
if(e<limit){
put_bits(pb, e + k + 1, (1<<k) + (i&((1<<k)-1)));
}else{
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){
static inline void set_ur_golomb_jpegls(PutBitContext *pb, int i, int k,
int limit, int esc_len)
{
int e;
assert(i>=0);
assert(i >= 0);
e= (i>>k) + 1;
if(e<limit){
while(e > 31) {
e = (i >> k) + 1;
if (e < limit) {
while (e > 31) {
put_bits(pb, 31, 0);
e -= 31;
}
put_bits(pb, e, 1);
if(k)
if (k)
put_sbits(pb, k, i);
}else{
while(limit > 31) {
} else {
while (limit > 31) {
put_bits(pb, 31, 0);
limit -= 31;
}
put_bits(pb, limit , 1);
put_bits(pb, limit, 1);
put_bits(pb, esc_len, i - 1);
}
}
......@@ -523,11 +561,13 @@ static inline void set_ur_golomb_jpegls(PutBitContext *pb, int i, int k, int lim
/**
* write signed golomb rice code (ffv1).
*/
static inline void set_sr_golomb(PutBitContext *pb, int i, int k, int limit, int esc_len){
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);
v = -2 * i - 1;
v ^= (v >> 31);
set_ur_golomb(pb, v, k, limit, esc_len);
}
......@@ -535,11 +575,13 @@ static inline void set_sr_golomb(PutBitContext *pb, int i, int k, int limit, int
/**
* write signed golomb rice code (flac).
*/
static inline void set_sr_golomb_flac(PutBitContext *pb, int i, int k, int limit, int esc_len){
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);
v = -2 * i - 1;
v ^= (v >> 31);
set_ur_golomb_jpegls(pb, v, k, limit, esc_len);
}
......
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