/src/mozilla-central/media/libopus/celt/entcode.h

Source (jump to first uncovered line)
/* Copyright (c) 2001-2011 Timothy B. Terriberry
   Copyright (c) 2008-2009 Xiph.Org Foundation */
/*
   Redistribution and use in source and binary forms, with or without
   modification, are permitted provided that the following conditions
   are met:

   - Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.

   - Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.

   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#include "opus_types.h"
#include "opus_defines.h"

#if !defined(_entcode_H)
# define _entcode_H (1)
# include <limits.h>
# include <stddef.h>
# include "ecintrin.h"

extern const opus_uint32 SMALL_DIV_TABLE[129];

#ifdef OPUS_ARM_ASM
#define USE_SMALL_DIV_TABLE
#endif

/*OPT: ec_window must be at least 32 bits, but if you have fast arithmetic on a
   larger type, you can speed up the decoder by using it here.*/
typedef opus_uint32           ec_window;
typedef struct ec_ctx         ec_ctx;
typedef struct ec_ctx         ec_enc;
typedef struct ec_ctx         ec_dec;

# define EC_WINDOW_SIZE ((int)sizeof(ec_window)*CHAR_BIT)

/*The number of bits to use for the range-coded part of unsigned integers.*/
# define EC_UINT_BITS   (8)

/*The resolution of fractional-precision bit usage measurements, i.e.,
   3 => 1/8th bits.*/
# define BITRES 3

/*The entropy encoder/decoder context.
  We use the same structure for both, so that common functions like ec_tell()
   can be used on either one.*/
struct ec_ctx{
   /*Buffered input/output.*/
   unsigned char *buf;
   /*The size of the buffer.*/
   opus_uint32    storage;
   /*The offset at which the last byte containing raw bits was read/written.*/
   opus_uint32    end_offs;
   /*Bits that will be read from/written at the end.*/
   ec_window      end_window;
   /*Number of valid bits in end_window.*/
   int            nend_bits;
   /*The total number of whole bits read/written.
     This does not include partial bits currently in the range coder.*/
   int            nbits_total;
   /*The offset at which the next range coder byte will be read/written.*/
   opus_uint32    offs;
   /*The number of values in the current range.*/
   opus_uint32    rng;
   /*In the decoder: the difference between the top of the current range and
      the input value, minus one.
     In the encoder: the low end of the current range.*/
   opus_uint32    val;
   /*In the decoder: the saved normalization factor from ec_decode().
     In the encoder: the number of oustanding carry propagating symbols.*/
   opus_uint32    ext;
   /*A buffered input/output symbol, awaiting carry propagation.*/
   int            rem;
   /*Nonzero if an error occurred.*/
   int            error;
};

static OPUS_INLINE opus_uint32 ec_range_bytes(ec_ctx *_this){
  return _this->offs;
}

static OPUS_INLINE unsigned char *ec_get_buffer(ec_ctx *_this){
  return _this->buf;
}

static OPUS_INLINE int ec_get_error(ec_ctx *_this){
  return _this->error;
}

/*Returns the number of bits "used" by the encoded or decoded symbols so far.
  This same number can be computed in either the encoder or the decoder, and is
   suitable for making coding decisions.
  Return: The number of bits.
          This will always be slightly larger than the exact value (e.g., all
           rounding error is in the positive direction).*/
static OPUS_INLINE int ec_tell(ec_ctx *_this){
  return _this->nbits_total-EC_ILOG(_this->rng);
}

/*Returns the number of bits "used" by the encoded or decoded symbols so far.
  This same number can be computed in either the encoder or the decoder, and is
   suitable for making coding decisions.
  Return: The number of bits scaled by 2**BITRES.
          This will always be slightly larger than the exact value (e.g., all
           rounding error is in the positive direction).*/
opus_uint32 ec_tell_frac(ec_ctx *_this);

/* Tested exhaustively for all n and for 1<=d<=256 */
static OPUS_INLINE opus_uint32 celt_udiv(opus_uint32 n, opus_uint32 d) {
   celt_sig_assert(d>0);
#ifdef USE_SMALL_DIV_TABLE
   if (d>256)
      return n/d;
   else {
      opus_uint32 t, q;
      t = EC_ILOG(d&-d);
      q = (opus_uint64)SMALL_DIV_TABLE[d>>t]*(n>>(t-1))>>32;
      return q+(n-q*d >= d);
   }
#else
   return n/d;
#endif
}

static OPUS_INLINE opus_int32 celt_sudiv(opus_int32 n, opus_int32 d) {
   celt_sig_assert(d>0);
#ifdef USE_SMALL_DIV_TABLE
   if (n<0)
      return -(opus_int32)celt_udiv(-n, d);
   else
      return celt_udiv(n, d);
#else
   return n/d;
#endif
}

#endif

Line	Count	Source (jump to first uncovered line)
1		/* Copyright (c) 2001-2011 Timothy B. Terriberry
2		Copyright (c) 2008-2009 Xiph.Org Foundation */
3		/*
4		Redistribution and use in source and binary forms, with or without
5		modification, are permitted provided that the following conditions
6		are met:
7
8		- Redistributions of source code must retain the above copyright
9		notice, this list of conditions and the following disclaimer.
10
11		- Redistributions in binary form must reproduce the above copyright
12		notice, this list of conditions and the following disclaimer in the
13		documentation and/or other materials provided with the distribution.
14
15		THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16		``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17		LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
18		A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
19		OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20		EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21		PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
22		PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
23		LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
24		NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25		SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26		*/
27
28		#include "opus_types.h"
29		#include "opus_defines.h"
30
31		#if !defined(_entcode_H)
32		# define _entcode_H (1)
33		# include <limits.h>
34		# include <stddef.h>
35		# include "ecintrin.h"
36
37		extern const opus_uint32 SMALL_DIV_TABLE[129];
38
39		#ifdef OPUS_ARM_ASM
40		#define USE_SMALL_DIV_TABLE
41		#endif
42
43		/*OPT: ec_window must be at least 32 bits, but if you have fast arithmetic on a
44		larger type, you can speed up the decoder by using it here.*/
45		typedef opus_uint32 ec_window;
46		typedef struct ec_ctx ec_ctx;
47		typedef struct ec_ctx ec_enc;
48		typedef struct ec_ctx ec_dec;
49
50	0	# define EC_WINDOW_SIZE ((int)sizeof(ec_window)*CHAR_BIT)
51
52		/The number of bits to use for the range-coded part of unsigned integers./
53	0	# define EC_UINT_BITS (8)
54
55		/*The resolution of fractional-precision bit usage measurements, i.e.,
56		3 => 1/8th bits.*/
57	0	# define BITRES 3
58
59		/*The entropy encoder/decoder context.
60		We use the same structure for both, so that common functions like ec_tell()
61		can be used on either one.*/
62		struct ec_ctx{
63		/Buffered input/output./
64		unsigned char *buf;
65		/The size of the buffer./
66		opus_uint32 storage;
67		/The offset at which the last byte containing raw bits was read/written./
68		opus_uint32 end_offs;
69		/Bits that will be read from/written at the end./
70		ec_window end_window;
71		/Number of valid bits in end_window./
72		int nend_bits;
73		/*The total number of whole bits read/written.
74		This does not include partial bits currently in the range coder.*/
75		int nbits_total;
76		/The offset at which the next range coder byte will be read/written./
77		opus_uint32 offs;
78		/The number of values in the current range./
79		opus_uint32 rng;
80		/*In the decoder: the difference between the top of the current range and
81		the input value, minus one.
82		In the encoder: the low end of the current range.*/
83		opus_uint32 val;
84		/*In the decoder: the saved normalization factor from ec_decode().
85		In the encoder: the number of oustanding carry propagating symbols.*/
86		opus_uint32 ext;
87		/A buffered input/output symbol, awaiting carry propagation./
88		int rem;
89		/Nonzero if an error occurred./
90		int error;
91		};
92
93	0	static OPUS_INLINE opus_uint32 ec_range_bytes(ec_ctx *_this){
94	0	return _this->offs;
95	0	} Unexecuted instantiation: celt.c:ec_range_bytes Unexecuted instantiation: celt_decoder.c:ec_range_bytes Unexecuted instantiation: celt_encoder.c:ec_range_bytes Unexecuted instantiation: celt_lpc_sse4_1.c:ec_range_bytes Unexecuted instantiation: pitch_sse.c:ec_range_bytes Unexecuted instantiation: pitch_sse2.c:ec_range_bytes Unexecuted instantiation: pitch_sse4_1.c:ec_range_bytes Unexecuted instantiation: vq_sse2.c:ec_range_bytes Unexecuted instantiation: x86_celt_map.c:ec_range_bytes Unexecuted instantiation: x86cpu.c:ec_range_bytes Unexecuted instantiation: NLSF2A.c:ec_range_bytes Unexecuted instantiation: NSQ_del_dec_sse4_1.c:ec_range_bytes Unexecuted instantiation: NSQ_sse4_1.c:ec_range_bytes Unexecuted instantiation: VAD_sse4_1.c:ec_range_bytes Unexecuted instantiation: VQ_WMat_EC_sse4_1.c:ec_range_bytes Unexecuted instantiation: Unified_c_media_libopus0.c:ec_range_bytes Unexecuted instantiation: Unified_c_media_libopus1.c:ec_range_bytes Unexecuted instantiation: Unified_c_media_libopus2.c:ec_range_bytes Unexecuted instantiation: Unified_c_media_libopus3.c:ec_range_bytes Unexecuted instantiation: Unified_c_media_libopus4.c:ec_range_bytes Unexecuted instantiation: Unified_c_media_libopus5.c:ec_range_bytes Unexecuted instantiation: Unified_c_media_libopus6.c:ec_range_bytes Unexecuted instantiation: Unified_c_media_libopus7.c:ec_range_bytes Unexecuted instantiation: Unified_c_media_libopus8.c:ec_range_bytes
96
97	0	static OPUS_INLINE unsigned char ec_get_buffer(ec_ctx _this){
98	0	return _this->buf;
99	0	} Unexecuted instantiation: celt.c:ec_get_buffer Unexecuted instantiation: celt_decoder.c:ec_get_buffer Unexecuted instantiation: celt_encoder.c:ec_get_buffer Unexecuted instantiation: celt_lpc_sse4_1.c:ec_get_buffer Unexecuted instantiation: pitch_sse.c:ec_get_buffer Unexecuted instantiation: pitch_sse2.c:ec_get_buffer Unexecuted instantiation: pitch_sse4_1.c:ec_get_buffer Unexecuted instantiation: vq_sse2.c:ec_get_buffer Unexecuted instantiation: x86_celt_map.c:ec_get_buffer Unexecuted instantiation: x86cpu.c:ec_get_buffer Unexecuted instantiation: NLSF2A.c:ec_get_buffer Unexecuted instantiation: NSQ_del_dec_sse4_1.c:ec_get_buffer Unexecuted instantiation: NSQ_sse4_1.c:ec_get_buffer Unexecuted instantiation: VAD_sse4_1.c:ec_get_buffer Unexecuted instantiation: VQ_WMat_EC_sse4_1.c:ec_get_buffer Unexecuted instantiation: Unified_c_media_libopus0.c:ec_get_buffer Unexecuted instantiation: Unified_c_media_libopus1.c:ec_get_buffer Unexecuted instantiation: Unified_c_media_libopus2.c:ec_get_buffer Unexecuted instantiation: Unified_c_media_libopus3.c:ec_get_buffer Unexecuted instantiation: Unified_c_media_libopus4.c:ec_get_buffer Unexecuted instantiation: Unified_c_media_libopus5.c:ec_get_buffer Unexecuted instantiation: Unified_c_media_libopus6.c:ec_get_buffer Unexecuted instantiation: Unified_c_media_libopus7.c:ec_get_buffer Unexecuted instantiation: Unified_c_media_libopus8.c:ec_get_buffer
100
101	0	static OPUS_INLINE int ec_get_error(ec_ctx *_this){
102	0	return _this->error;
103	0	} Unexecuted instantiation: celt.c:ec_get_error Unexecuted instantiation: celt_decoder.c:ec_get_error Unexecuted instantiation: celt_encoder.c:ec_get_error Unexecuted instantiation: celt_lpc_sse4_1.c:ec_get_error Unexecuted instantiation: pitch_sse.c:ec_get_error Unexecuted instantiation: pitch_sse2.c:ec_get_error Unexecuted instantiation: pitch_sse4_1.c:ec_get_error Unexecuted instantiation: vq_sse2.c:ec_get_error Unexecuted instantiation: x86_celt_map.c:ec_get_error Unexecuted instantiation: x86cpu.c:ec_get_error Unexecuted instantiation: NLSF2A.c:ec_get_error Unexecuted instantiation: NSQ_del_dec_sse4_1.c:ec_get_error Unexecuted instantiation: NSQ_sse4_1.c:ec_get_error Unexecuted instantiation: VAD_sse4_1.c:ec_get_error Unexecuted instantiation: VQ_WMat_EC_sse4_1.c:ec_get_error Unexecuted instantiation: Unified_c_media_libopus0.c:ec_get_error Unexecuted instantiation: Unified_c_media_libopus1.c:ec_get_error Unexecuted instantiation: Unified_c_media_libopus2.c:ec_get_error Unexecuted instantiation: Unified_c_media_libopus3.c:ec_get_error Unexecuted instantiation: Unified_c_media_libopus4.c:ec_get_error Unexecuted instantiation: Unified_c_media_libopus5.c:ec_get_error Unexecuted instantiation: Unified_c_media_libopus6.c:ec_get_error Unexecuted instantiation: Unified_c_media_libopus7.c:ec_get_error Unexecuted instantiation: Unified_c_media_libopus8.c:ec_get_error
104
105		/*Returns the number of bits "used" by the encoded or decoded symbols so far.
106		This same number can be computed in either the encoder or the decoder, and is
107		suitable for making coding decisions.
108		Return: The number of bits.
109		This will always be slightly larger than the exact value (e.g., all
110		rounding error is in the positive direction).*/
111	0	static OPUS_INLINE int ec_tell(ec_ctx *_this){
112	0	return _this->nbits_total-EC_ILOG(_this->rng);
113	0	} Unexecuted instantiation: celt.c:ec_tell Unexecuted instantiation: celt_decoder.c:ec_tell Unexecuted instantiation: celt_encoder.c:ec_tell Unexecuted instantiation: celt_lpc_sse4_1.c:ec_tell Unexecuted instantiation: pitch_sse.c:ec_tell Unexecuted instantiation: pitch_sse2.c:ec_tell Unexecuted instantiation: pitch_sse4_1.c:ec_tell Unexecuted instantiation: vq_sse2.c:ec_tell Unexecuted instantiation: x86_celt_map.c:ec_tell Unexecuted instantiation: x86cpu.c:ec_tell Unexecuted instantiation: NLSF2A.c:ec_tell Unexecuted instantiation: NSQ_del_dec_sse4_1.c:ec_tell Unexecuted instantiation: NSQ_sse4_1.c:ec_tell Unexecuted instantiation: VAD_sse4_1.c:ec_tell Unexecuted instantiation: VQ_WMat_EC_sse4_1.c:ec_tell Unexecuted instantiation: Unified_c_media_libopus0.c:ec_tell Unexecuted instantiation: Unified_c_media_libopus1.c:ec_tell Unexecuted instantiation: Unified_c_media_libopus2.c:ec_tell Unexecuted instantiation: Unified_c_media_libopus3.c:ec_tell Unexecuted instantiation: Unified_c_media_libopus4.c:ec_tell Unexecuted instantiation: Unified_c_media_libopus5.c:ec_tell Unexecuted instantiation: Unified_c_media_libopus6.c:ec_tell Unexecuted instantiation: Unified_c_media_libopus7.c:ec_tell Unexecuted instantiation: Unified_c_media_libopus8.c:ec_tell
114
115		/*Returns the number of bits "used" by the encoded or decoded symbols so far.
116		This same number can be computed in either the encoder or the decoder, and is
117		suitable for making coding decisions.
118		Return: The number of bits scaled by 2**BITRES.
119		This will always be slightly larger than the exact value (e.g., all
120		rounding error is in the positive direction).*/
121		opus_uint32 ec_tell_frac(ec_ctx *_this);
122
123		/* Tested exhaustively for all n and for 1<=d<=256 */
124	0	static OPUS_INLINE opus_uint32 celt_udiv(opus_uint32 n, opus_uint32 d) {
125	0	celt_sig_assert(d>0);
126		#ifdef USE_SMALL_DIV_TABLE
127		if (d>256)
128		return n/d;
129		else {
130		opus_uint32 t, q;
131		t = EC_ILOG(d&-d);
132		q = (opus_uint64)SMALL_DIV_TABLE[d>>t]*(n>>(t-1))>>32;
133		return q+(n-q*d >= d);
134		}
135		#else
136		return n/d;
137	0	#endif
138	0	} Unexecuted instantiation: celt.c:celt_udiv Unexecuted instantiation: celt_decoder.c:celt_udiv Unexecuted instantiation: celt_encoder.c:celt_udiv Unexecuted instantiation: celt_lpc_sse4_1.c:celt_udiv Unexecuted instantiation: pitch_sse.c:celt_udiv Unexecuted instantiation: pitch_sse2.c:celt_udiv Unexecuted instantiation: pitch_sse4_1.c:celt_udiv Unexecuted instantiation: vq_sse2.c:celt_udiv Unexecuted instantiation: x86_celt_map.c:celt_udiv Unexecuted instantiation: x86cpu.c:celt_udiv Unexecuted instantiation: NLSF2A.c:celt_udiv Unexecuted instantiation: NSQ_del_dec_sse4_1.c:celt_udiv Unexecuted instantiation: NSQ_sse4_1.c:celt_udiv Unexecuted instantiation: VAD_sse4_1.c:celt_udiv Unexecuted instantiation: VQ_WMat_EC_sse4_1.c:celt_udiv Unexecuted instantiation: Unified_c_media_libopus0.c:celt_udiv Unexecuted instantiation: Unified_c_media_libopus1.c:celt_udiv Unexecuted instantiation: Unified_c_media_libopus2.c:celt_udiv Unexecuted instantiation: Unified_c_media_libopus3.c:celt_udiv Unexecuted instantiation: Unified_c_media_libopus4.c:celt_udiv Unexecuted instantiation: Unified_c_media_libopus5.c:celt_udiv Unexecuted instantiation: Unified_c_media_libopus6.c:celt_udiv Unexecuted instantiation: Unified_c_media_libopus7.c:celt_udiv Unexecuted instantiation: Unified_c_media_libopus8.c:celt_udiv
139
140	0	static OPUS_INLINE opus_int32 celt_sudiv(opus_int32 n, opus_int32 d) {
141	0	celt_sig_assert(d>0);
142		#ifdef USE_SMALL_DIV_TABLE
143		if (n<0)
144		return -(opus_int32)celt_udiv(-n, d);
145		else
146		return celt_udiv(n, d);
147		#else
148		return n/d;
149	0	#endif
150	0	} Unexecuted instantiation: celt.c:celt_sudiv Unexecuted instantiation: celt_decoder.c:celt_sudiv Unexecuted instantiation: celt_encoder.c:celt_sudiv Unexecuted instantiation: celt_lpc_sse4_1.c:celt_sudiv Unexecuted instantiation: pitch_sse.c:celt_sudiv Unexecuted instantiation: pitch_sse2.c:celt_sudiv Unexecuted instantiation: pitch_sse4_1.c:celt_sudiv Unexecuted instantiation: vq_sse2.c:celt_sudiv Unexecuted instantiation: x86_celt_map.c:celt_sudiv Unexecuted instantiation: x86cpu.c:celt_sudiv Unexecuted instantiation: NLSF2A.c:celt_sudiv Unexecuted instantiation: NSQ_del_dec_sse4_1.c:celt_sudiv Unexecuted instantiation: NSQ_sse4_1.c:celt_sudiv Unexecuted instantiation: VAD_sse4_1.c:celt_sudiv Unexecuted instantiation: VQ_WMat_EC_sse4_1.c:celt_sudiv Unexecuted instantiation: Unified_c_media_libopus0.c:celt_sudiv Unexecuted instantiation: Unified_c_media_libopus1.c:celt_sudiv Unexecuted instantiation: Unified_c_media_libopus2.c:celt_sudiv Unexecuted instantiation: Unified_c_media_libopus3.c:celt_sudiv Unexecuted instantiation: Unified_c_media_libopus4.c:celt_sudiv Unexecuted instantiation: Unified_c_media_libopus5.c:celt_sudiv Unexecuted instantiation: Unified_c_media_libopus6.c:celt_sudiv Unexecuted instantiation: Unified_c_media_libopus7.c:celt_sudiv Unexecuted instantiation: Unified_c_media_libopus8.c:celt_sudiv
151
152		#endif

Coverage Report

Created: 2018-09-25 14:53