55 files changed, 11471 insertions, 2282 deletions
diff --git a/drivers/amvdec_ports/utils/golomb.h b/drivers/amvdec_ports/utils/golomb.h new file mode 100644 index 0000000..d66c182 --- a/dev/null +++ b/drivers/amvdec_ports/utils/golomb.h @@ -0,0 +1,500 @@ +#ifndef AVCODEC_GOLOMB_H +#define AVCODEC_GOLOMB_H + +#include <linux/kernel.h> +#include <linux/types.h> + +#include "get_bits.h" +#include "put_bits.h" +#include "common.h" + +#define INVALID_VLC 0x80000000 + +extern const u8 ff_golomb_vlc_len[512]; +extern const u8 ff_ue_golomb_vlc_code[512]; +extern const char ff_se_golomb_vlc_code[512]; +extern const u8 ff_ue_golomb_len[256]; + +extern const u8 ff_interleaved_golomb_vlc_len[256]; +extern const u8 ff_interleaved_ue_golomb_vlc_code[256]; +extern const char ff_interleaved_se_golomb_vlc_code[256]; +extern const u8 ff_interleaved_dirac_golomb_vlc_code[256]; + +/** + * Read an u32 Exp-Golomb code in the range 0 to 8190. + * + * @returns the read value or a negative error code. + */ +static inline int get_ue_golomb(struct get_bits_context *gb) +{ + u32 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; + LAST_SKIP_BITS(re, gb, 32 - log); + CLOSE_READER(re, gb); + if (log < 7) { + pr_err("Invalid UE golomb code\n"); + return -1; + } + buf >>= log; + buf--; + + return buf; + } +} + +/** + * Read an u32 Exp-Golomb code in the range 0 to UINT_MAX-1. + */ +static inline u32 get_ue_golomb_long(struct get_bits_context *gb) +{ + u32 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 u32 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(struct get_bits_context *gb) +{ + u32 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 u32 get_interleaved_ue_golomb(struct get_bits_context *gb) +{ + u32 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 { + u32 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 (ret<0x8000000U && BITS_AVAILABLE(re, gb)); + + CLOSE_READER(re, gb); + return ret - 1; + } +} + +/** + * read u32 truncated exp golomb code. + */ +static inline int get_te0_golomb(struct get_bits_context *gb, int range) +{ + if (range == 1) + return 0; + else if (range == 2) + return get_bits1(gb) ^ 1; + else + return get_ue_golomb(gb); +} + +/** + * read u32 truncated exp golomb code. + */ +static inline int get_te_golomb(struct get_bits_context *gb, int range) +{ + 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(struct get_bits_context *gb) +{ + u32 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 = av_log2(buf), sign; + LAST_SKIP_BITS(re, gb, 31 - log); + UPDATE_CACHE(re, gb); + buf = GET_CACHE(re, gb); + + buf >>= log; + + LAST_SKIP_BITS(re, gb, 32 - log); + CLOSE_READER(re, gb); + + sign = -(buf & 1); + buf = ((buf >> 1) ^ sign) - sign; + + return buf; + } +} + +static inline int get_se_golomb_long(struct get_bits_context *gb) +{ + u32 buf = get_ue_golomb_long(gb); + int sign = (buf & 1) - 1; + + return ((buf >> 1) ^ sign) + 1; +} + +static inline int get_interleaved_se_golomb(struct get_bits_context *gb) +{ + u32 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(struct get_bits_context *gb) +{ + u32 ret = get_interleaved_ue_golomb(gb); + + if (ret) { + int sign = -get_bits1(gb); + ret = (ret ^ sign) - sign; + } + + return ret; +} + +/** + * read u32 golomb rice code (ffv1). + */ +static inline int get_ur_golomb(struct get_bits_context *gb, + int k, int limit, int esc_len) +{ + u32 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 += (30U - 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 u32 golomb rice code (jpegls). + */ +static inline int get_ur_golomb_jpegls(struct get_bits_context *gb, + int k, int limit, int esc_len) +{ + u32 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 += (30U - log) << k; + LAST_SKIP_BITS(re, gb, 32 + k - log); + CLOSE_READER(re, gb); + + return buf; + } else { + int i; + for (i = 0; i + MIN_CACHE_BITS <= limit && SHOW_UBITS(re, gb, MIN_CACHE_BITS) == 0; i += MIN_CACHE_BITS) { + if (gb->size_in_bits <= re_index) { + CLOSE_READER(re, gb); + return -1; + } + LAST_SKIP_BITS(re, gb, MIN_CACHE_BITS); + UPDATE_CACHE(re, gb); + } + for (; i < limit && SHOW_UBITS(re, gb, 1) == 0; i++) { + SKIP_BITS(re, gb, 1); + } + LAST_SKIP_BITS(re, gb, 1); + UPDATE_CACHE(re, gb); + + if (i < limit - 1) { + if (k) { + if (k > MIN_CACHE_BITS - 1) { + buf = SHOW_UBITS(re, gb, 16) << (k-16); + LAST_SKIP_BITS(re, gb, 16); + UPDATE_CACHE(re, gb); + buf |= SHOW_UBITS(re, gb, k-16); + LAST_SKIP_BITS(re, gb, k-16); + } else { + buf = SHOW_UBITS(re, gb, k); + LAST_SKIP_BITS(re, gb, k); + } + } else { + buf = 0; + } + buf += ((u32)i << k); + } else if (i == limit - 1) { + buf = SHOW_UBITS(re, gb, esc_len); + LAST_SKIP_BITS(re, gb, esc_len); + + buf ++; + } else { + buf = -1; + } + CLOSE_READER(re, gb); + return buf; + } +} + +/** + * read signed golomb rice code (ffv1). + */ +static inline int get_sr_golomb(struct get_bits_context *gb, + int k, int limit, int esc_len) +{ + u32 v = get_ur_golomb(gb, k, limit, esc_len); + + return (v >> 1) ^ -(v & 1); +} + +/** + * read signed golomb rice code (flac). + */ +static inline int get_sr_golomb_flac(struct get_bits_context *gb, + int k, int limit, int esc_len) +{ + u32 v = get_ur_golomb_jpegls(gb, k, limit, esc_len); + + return (v >> 1) ^ -(v & 1); +} + +/** + * read u32 golomb rice code (shorten). + */ +static inline u32 get_ur_golomb_shorten(struct get_bits_context *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(struct get_bits_context *gb, int k) +{ + int uvar = get_ur_golomb_jpegls(gb, k + 1, INT_MAX, 0); + + return (uvar >> 1) ^ -(uvar & 1); +} + +/** + * write u32 exp golomb code. 2^16 - 2 at most + */ +static inline void set_ue_golomb(struct put_bits_context *pb, int i) +{ + 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 u32 exp golomb code. 2^32-2 at most. + */ +static inline void set_ue_golomb_long(struct put_bits_context *pb, u32 i) +{ + if (i < 256) + put_bits(pb, ff_ue_golomb_len[i], i + 1); + else { + int e = av_log2(i + 1); + put_bits64(pb, 2 * e + 1, i + 1); + } +} + +/** + * write truncated u32 exp golomb code. + */ +static inline void set_te_golomb(struct put_bits_context *pb, int i, int 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(struct put_bits_context *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 u32 golomb rice code (ffv1). + */ +static inline void set_ur_golomb(struct put_bits_context *pb, int i, int k, int limit, + int esc_len) +{ + int e; + + e = i >> k; + if (e < limit) + put_bits(pb, e + k + 1, (1 << k) + av_mod_uintp2(i, k)); + else + put_bits(pb, limit + esc_len, i - limit + 1); +} + +/** + * write u32 golomb rice code (jpegls). + */ +static inline void set_ur_golomb_jpegls(struct put_bits_context *pb, + int i, int k, int limit, int esc_len) +{ + int e; + + 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(struct put_bits_context *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(struct put_bits_context *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 */ |