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author | Vittorio Giovara <vittorio.giovara@gmail.com> | 2013-10-22 13:12:49 +0200 |
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committer | Diego Biurrun <diego@biurrun.de> | 2013-10-23 13:17:23 +0200 |
commit | 2c993e8b5ecaeb5c8508ce18d6f4ed93b9246d19 (patch) | |
tree | 5cf81d4402e891cccb69f2a1656eae27e644caae /libavcodec | |
parent | 1ce3ec24b35d9d549b12f17bd7fd391abaf3a6f7 (diff) | |
download | ffmpeg-streaming-2c993e8b5ecaeb5c8508ce18d6f4ed93b9246d19.zip ffmpeg-streaming-2c993e8b5ecaeb5c8508ce18d6f4ed93b9246d19.tar.gz |
golomb: K&R formatting cosmetics
Signed-off-by: Diego Biurrun <diego@biurrun.de>
Diffstat (limited to 'libavcodec')
-rw-r--r-- | libavcodec/golomb.h | 314 |
1 files changed, 178 insertions, 136 deletions
diff --git a/libavcodec/golomb.h b/libavcodec/golomb.h index 564ba4e..22ab5cb 100644 --- a/libavcodec/golomb.h +++ b/libavcodec/golomb.h @@ -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); } |