ReactOS 0.4.15-dev-8131-g4988de4
common.h File Reference
#include "samplerate.h"
Include dependency graph for common.h:
This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Classes

struct  SRC_PRIVATE_tag
 

Macros

#define SRC_MAX_RATIO   256
 
#define SRC_MAX_RATIO_STR   "256"
 
#define SRC_MIN_RATIO_DIFF   (1e-20)
 
#define MAX(a, b)   (((a) > (b)) ? (a) : (b))
 
#define MIN(a, b)   (((a) < (b)) ? (a) : (b))
 
#define ARRAY_LEN(x)   ((int) (sizeof (x) / sizeof ((x) [0])))
 
#define OFFSETOF(type, member)   ((int) (&((type*) 0)->member))
 
#define MAKE_MAGIC(a, b, c, d, e, f)   ((a) + ((b) << 4) + ((c) << 8) + ((d) << 12) + ((e) << 16) + ((f) << 20))
 
#define UNUSED(x)   x
 
#define WARN_UNUSED
 

Typedefs

typedef struct SRC_PRIVATE_tag SRC_PRIVATE
 

Enumerations

enum  { SRC_FALSE = 0 , SRC_TRUE = 1 , SRC_MODE_PROCESS = 555 , SRC_MODE_CALLBACK = 556 }
 
enum  {
  SRC_ERR_NO_ERROR = 0 , SRC_ERR_MALLOC_FAILED , SRC_ERR_BAD_STATE , SRC_ERR_BAD_DATA ,
  SRC_ERR_BAD_DATA_PTR , SRC_ERR_NO_PRIVATE , SRC_ERR_BAD_SRC_RATIO , SRC_ERR_BAD_PROC_PTR ,
  SRC_ERR_SHIFT_BITS , SRC_ERR_FILTER_LEN , SRC_ERR_BAD_CONVERTER , SRC_ERR_BAD_CHANNEL_COUNT ,
  SRC_ERR_SINC_BAD_BUFFER_LEN , SRC_ERR_SIZE_INCOMPATIBILITY , SRC_ERR_BAD_PRIV_PTR , SRC_ERR_BAD_SINC_STATE ,
  SRC_ERR_DATA_OVERLAP , SRC_ERR_BAD_CALLBACK , SRC_ERR_BAD_MODE , SRC_ERR_NULL_CALLBACK ,
  SRC_ERR_NO_VARIABLE_RATIO , SRC_ERR_SINC_PREPARE_DATA_BAD_LEN , SRC_ERR_BAD_INTERNAL_STATE , SRC_ERR_MAX_ERROR
}
 

Functions

const charsinc_get_name (int src_enum)
 
const charsinc_get_description (int src_enum)
 
int sinc_set_converter (SRC_PRIVATE *psrc, int src_enum)
 
const charlinear_get_name (int src_enum)
 
const charlinear_get_description (int src_enum)
 
int linear_set_converter (SRC_PRIVATE *psrc, int src_enum)
 
const charzoh_get_name (int src_enum)
 
const charzoh_get_description (int src_enum)
 
int zoh_set_converter (SRC_PRIVATE *psrc, int src_enum)
 
static double fmod_one (double x)
 
static int is_bad_src_ratio (double ratio)
 

Macro Definition Documentation

◆ ARRAY_LEN

#define ARRAY_LEN (   x)    ((int) (sizeof (x) / sizeof ((x) [0])))

Definition at line 28 of file common.h.

◆ MAKE_MAGIC

#define MAKE_MAGIC (   a,
  b,
  c,
  d,
  e,
  f 
)    ((a) + ((b) << 4) + ((c) << 8) + ((d) << 12) + ((e) << 16) + ((f) << 20))

Definition at line 31 of file common.h.

◆ MAX

#define MAX (   a,
  b 
)    (((a) > (b)) ? (a) : (b))

Definition at line 25 of file common.h.

◆ MIN

#define MIN (   a,
  b 
)    (((a) < (b)) ? (a) : (b))

Definition at line 26 of file common.h.

◆ OFFSETOF

#define OFFSETOF (   type,
  member 
)    ((int) (&((type*) 0)->member))

Definition at line 29 of file common.h.

◆ SRC_MAX_RATIO

#define SRC_MAX_RATIO   256

Definition at line 20 of file common.h.

◆ SRC_MAX_RATIO_STR

#define SRC_MAX_RATIO_STR   "256"

Definition at line 21 of file common.h.

◆ SRC_MIN_RATIO_DIFF

#define SRC_MIN_RATIO_DIFF   (1e-20)

Definition at line 23 of file common.h.

◆ UNUSED

#define UNUSED (   x)    x

Definition at line 42 of file common.h.

◆ WARN_UNUSED

#define WARN_UNUSED

Definition at line 48 of file common.h.

Typedef Documentation

◆ SRC_PRIVATE

Enumeration Type Documentation

◆ anonymous enum

anonymous enum
Enumerator
SRC_FALSE 
SRC_TRUE 
SRC_MODE_PROCESS 
SRC_MODE_CALLBACK 

Definition at line 54 of file common.h.

55{ SRC_FALSE = 0,
56 SRC_TRUE = 1,
57
58 SRC_MODE_PROCESS = 555,
60} ;
@ SRC_MODE_CALLBACK
Definition: common.h:59
@ SRC_MODE_PROCESS
Definition: common.h:58
@ SRC_FALSE
Definition: common.h:55
@ SRC_TRUE
Definition: common.h:56

◆ anonymous enum

anonymous enum
Enumerator
SRC_ERR_NO_ERROR 
SRC_ERR_MALLOC_FAILED 
SRC_ERR_BAD_STATE 
SRC_ERR_BAD_DATA 
SRC_ERR_BAD_DATA_PTR 
SRC_ERR_NO_PRIVATE 
SRC_ERR_BAD_SRC_RATIO 
SRC_ERR_BAD_PROC_PTR 
SRC_ERR_SHIFT_BITS 
SRC_ERR_FILTER_LEN 
SRC_ERR_BAD_CONVERTER 
SRC_ERR_BAD_CHANNEL_COUNT 
SRC_ERR_SINC_BAD_BUFFER_LEN 
SRC_ERR_SIZE_INCOMPATIBILITY 
SRC_ERR_BAD_PRIV_PTR 
SRC_ERR_BAD_SINC_STATE 
SRC_ERR_DATA_OVERLAP 
SRC_ERR_BAD_CALLBACK 
SRC_ERR_BAD_MODE 
SRC_ERR_NULL_CALLBACK 
SRC_ERR_NO_VARIABLE_RATIO 
SRC_ERR_SINC_PREPARE_DATA_BAD_LEN 
SRC_ERR_BAD_INTERNAL_STATE 
SRC_ERR_MAX_ERROR 

Definition at line 62 of file common.h.

64
87
88 /* This must be the last error number. */
90} ;
@ SRC_ERR_DATA_OVERLAP
Definition: common.h:80
@ SRC_ERR_SIZE_INCOMPATIBILITY
Definition: common.h:77
@ SRC_ERR_FILTER_LEN
Definition: common.h:73
@ SRC_ERR_NO_VARIABLE_RATIO
Definition: common.h:84
@ SRC_ERR_NO_ERROR
Definition: common.h:63
@ SRC_ERR_BAD_SINC_STATE
Definition: common.h:79
@ SRC_ERR_BAD_PROC_PTR
Definition: common.h:71
@ SRC_ERR_BAD_INTERNAL_STATE
Definition: common.h:86
@ SRC_ERR_BAD_DATA_PTR
Definition: common.h:68
@ SRC_ERR_MAX_ERROR
Definition: common.h:89
@ SRC_ERR_BAD_STATE
Definition: common.h:66
@ SRC_ERR_BAD_SRC_RATIO
Definition: common.h:70
@ SRC_ERR_NULL_CALLBACK
Definition: common.h:83
@ SRC_ERR_BAD_CHANNEL_COUNT
Definition: common.h:75
@ SRC_ERR_BAD_MODE
Definition: common.h:82
@ SRC_ERR_SINC_PREPARE_DATA_BAD_LEN
Definition: common.h:85
@ SRC_ERR_BAD_CONVERTER
Definition: common.h:74
@ SRC_ERR_SINC_BAD_BUFFER_LEN
Definition: common.h:76
@ SRC_ERR_NO_PRIVATE
Definition: common.h:69
@ SRC_ERR_SHIFT_BITS
Definition: common.h:72
@ SRC_ERR_BAD_DATA
Definition: common.h:67
@ SRC_ERR_BAD_CALLBACK
Definition: common.h:81
@ SRC_ERR_BAD_PRIV_PTR
Definition: common.h:78
@ SRC_ERR_MALLOC_FAILED
Definition: common.h:65

Function Documentation

◆ fmod_one()

static double fmod_one ( double  x)
inlinestatic

Definition at line 143 of file common.h.

144{ double res ;
145
146 res = x - lrint (x) ;
147 if (res < 0.0)
148 return res + 1.0 ;
149
150 return res ;
151} /* fmod_one */
GLint GLint GLint GLint GLint x
Definition: gl.h:1548
GLuint res
Definition: glext.h:9613
_Check_return_ __CRT_INLINE long lrint(_In_ double x)
Definition: math.h:292

Referenced by linear_vari_process(), sinc_hex_vari_process(), sinc_mono_vari_process(), sinc_multichan_vari_process(), sinc_quad_vari_process(), sinc_stereo_vari_process(), and zoh_vari_process().

◆ is_bad_src_ratio()

static int is_bad_src_ratio ( double  ratio)
inlinestatic

◆ linear_get_description()

const char * linear_get_description ( int  src_enum)

Definition at line 146 of file src_linear.c.

147{
148 if (src_enum == SRC_LINEAR)
149 return "Linear interpolator, very fast, poor quality." ;
150
151 return NULL ;
152} /* linear_get_descrition */
#define NULL
Definition: types.h:112
@ SRC_LINEAR
Definition: samplerate.h:163

Referenced by src_get_description().

◆ linear_get_name()

const char * linear_get_name ( int  src_enum)

Definition at line 137 of file src_linear.c.

138{
139 if (src_enum == SRC_LINEAR)
140 return "Linear Interpolator" ;
141
142 return NULL ;
143} /* linear_get_name */

Referenced by src_get_name().

◆ linear_set_converter()

int linear_set_converter ( SRC_PRIVATE psrc,
int  src_enum 
)

Definition at line 155 of file src_linear.c.

156{ LINEAR_DATA *priv = NULL ;
157
158 if (src_enum != SRC_LINEAR)
159 return SRC_ERR_BAD_CONVERTER ;
160
161 if (psrc->private_data != NULL)
162 { free (psrc->private_data) ;
163 psrc->private_data = NULL ;
164 } ;
165
166 if (psrc->private_data == NULL)
167 { priv = calloc (1, sizeof (*priv) + psrc->channels * sizeof (float)) ;
168 psrc->private_data = priv ;
169 } ;
170
171 if (priv == NULL)
172 return SRC_ERR_MALLOC_FAILED ;
173
175 priv->channels = psrc->channels ;
176
179 psrc->reset = linear_reset ;
180
181 linear_reset (psrc) ;
182
183 return SRC_ERR_NO_ERROR ;
184} /* linear_set_converter */
#define free
Definition: debug_ros.c:5
#define calloc
Definition: rosglue.h:14
#define LINEAR_MAGIC_MARKER
Definition: src_linear.c:17
static int linear_vari_process(SRC_PRIVATE *psrc, SRC_DATA *data)
Definition: src_linear.c:34
static void linear_reset(SRC_PRIVATE *psrc)
Definition: src_linear.c:190
int linear_magic_marker
Definition: src_linear.c:22
int channels
Definition: src_linear.c:23
int(* const_process)(struct SRC_PRIVATE_tag *psrc, SRC_DATA *data)
Definition: common.h:108
int(* vari_process)(struct SRC_PRIVATE_tag *psrc, SRC_DATA *data)
Definition: common.h:105
void(* reset)(struct SRC_PRIVATE_tag *psrc)
Definition: common.h:111
int channels
Definition: common.h:96
void * private_data
Definition: common.h:102
ActualNumberDriverObjects * sizeof(PDRIVER_OBJECT)) PDRIVER_OBJECT *DriverObjectList

Referenced by psrc_set_converter().

◆ sinc_get_description()

const char * sinc_get_description ( int  src_enum)

Definition at line 113 of file src_sinc.c.

114{
115 switch (src_enum)
116 { case SRC_SINC_FASTEST :
117 return "Band limited sinc interpolation, fastest, 97dB SNR, 80% BW." ;
118
120 return "Band limited sinc interpolation, medium quality, 121dB SNR, 90% BW." ;
121
123 return "Band limited sinc interpolation, best quality, 144dB SNR, 96% BW." ;
124
125 default :
126 break ;
127 } ;
128
129 return NULL ;
130} /* sinc_get_descrition */
@ SRC_SINC_BEST_QUALITY
Definition: samplerate.h:159
@ SRC_SINC_FASTEST
Definition: samplerate.h:161
@ SRC_SINC_MEDIUM_QUALITY
Definition: samplerate.h:160

Referenced by src_get_description().

◆ sinc_get_name()

const char * sinc_get_name ( int  src_enum)

Definition at line 94 of file src_sinc.c.

95{
96 switch (src_enum)
98 return "Best Sinc Interpolator" ;
99
101 return "Medium Sinc Interpolator" ;
102
103 case SRC_SINC_FASTEST :
104 return "Fastest Sinc Interpolator" ;
105
106 default: break ;
107 } ;
108
109 return NULL ;
110} /* sinc_get_descrition */

Referenced by src_get_name().

◆ sinc_set_converter()

int sinc_set_converter ( SRC_PRIVATE psrc,
int  src_enum 
)

Definition at line 133 of file src_sinc.c.

134{ SINC_FILTER *filter, temp_filter ;
136 int bits ;
137
138 /* Quick sanity check. */
139 if (SHIFT_BITS >= sizeof (increment_t) * 8 - 1)
140 return SRC_ERR_SHIFT_BITS ;
141
142 if (psrc->private_data != NULL)
143 { free (psrc->private_data) ;
144 psrc->private_data = NULL ;
145 } ;
146
147 memset (&temp_filter, 0, sizeof (temp_filter)) ;
148
150 temp_filter.channels = psrc->channels ;
151
152 if (psrc->channels > ARRAY_LEN (temp_filter.left_calc))
154 else if (psrc->channels == 1)
157 }
158 else
159 if (psrc->channels == 2)
162 }
163 else
164 if (psrc->channels == 4)
167 }
168 else
169 if (psrc->channels == 6)
172 }
173 else
176 } ;
177 psrc->reset = sinc_reset ;
178
179 switch (src_enum)
180 { case SRC_SINC_FASTEST :
181 temp_filter.coeffs = fastest_coeffs.coeffs ;
182 temp_filter.coeff_half_len = ARRAY_LEN (fastest_coeffs.coeffs) - 2 ;
183 temp_filter.index_inc = fastest_coeffs.increment ;
184 break ;
185
187 temp_filter.coeffs = slow_mid_qual_coeffs.coeffs ;
188 temp_filter.coeff_half_len = ARRAY_LEN (slow_mid_qual_coeffs.coeffs) - 2 ;
189 temp_filter.index_inc = slow_mid_qual_coeffs.increment ;
190 break ;
191
193 temp_filter.coeffs = slow_high_qual_coeffs.coeffs ;
194 temp_filter.coeff_half_len = ARRAY_LEN (slow_high_qual_coeffs.coeffs) - 2 ;
195 temp_filter.index_inc = slow_high_qual_coeffs.increment ;
196 break ;
197
198 default :
199 return SRC_ERR_BAD_CONVERTER ;
200 } ;
201
202 /*
203 ** FIXME : This needs to be looked at more closely to see if there is
204 ** a better way. Need to look at prepare_data () at the same time.
205 */
206
207 temp_filter.b_len = lrint (2.5 * temp_filter.coeff_half_len / (temp_filter.index_inc * 1.0) * SRC_MAX_RATIO) ;
208 temp_filter.b_len = MAX (temp_filter.b_len, 4096) ;
209 temp_filter.b_len *= temp_filter.channels ;
210
211 if ((filter = calloc (1, sizeof (SINC_FILTER) + sizeof (filter->buffer [0]) * (temp_filter.b_len + temp_filter.channels))) == NULL)
212 return SRC_ERR_MALLOC_FAILED ;
213
214 *filter = temp_filter ;
215 memset (&temp_filter, 0xEE, sizeof (temp_filter)) ;
216
217 psrc->private_data = filter ;
218
219 sinc_reset (psrc) ;
220
221 count = filter->coeff_half_len ;
222 for (bits = 0 ; (MAKE_INCREMENT_T (1) << bits) < count ; bits++)
223 count |= (MAKE_INCREMENT_T (1) << bits) ;
224
225 if (bits + SHIFT_BITS - 1 >= (int) (sizeof (increment_t) * 8))
226 return SRC_ERR_FILTER_LEN ;
227
228 return SRC_ERR_NO_ERROR ;
229} /* sinc_set_converter */
#define MAX(x, y)
Definition: rdesktop.h:175
static const struct fastest_coeffs_s fastest_coeffs
GLuint GLuint GLsizei count
Definition: gl.h:1545
GLenum GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * bits
Definition: glext.h:10929
GLint GLint GLint GLint GLint GLint GLint GLbitfield GLenum filter
Definition: glext.h:7005
static const struct slow_high_qual_coeffs_s slow_high_qual_coeffs
#define bits
Definition: infblock.c:15
static const struct slow_mid_qual_coeffs_s slow_mid_qual_coeffs
#define ARRAY_LEN(x)
Definition: common.h:28
#define memset(x, y, z)
Definition: compat.h:39
#define SHIFT_BITS
Definition: src_sinc.c:18
static int sinc_multichan_vari_process(SRC_PRIVATE *psrc, SRC_DATA *data)
Definition: src_sinc.c:1017
static int sinc_quad_vari_process(SRC_PRIVATE *psrc, SRC_DATA *data)
Definition: src_sinc.c:610
static int sinc_hex_vari_process(SRC_PRIVATE *psrc, SRC_DATA *data)
Definition: src_sinc.c:770
static int sinc_stereo_vari_process(SRC_PRIVATE *psrc, SRC_DATA *data)
Definition: src_sinc.c:456
static void sinc_reset(SRC_PRIVATE *psrc)
Definition: src_sinc.c:232
int32_t increment_t
Definition: src_sinc.c:25
static int sinc_mono_vari_process(SRC_PRIVATE *psrc, SRC_DATA *data)
Definition: src_sinc.c:307
#define SINC_MAGIC_MARKER
Definition: src_sinc.c:11
#define MAKE_INCREMENT_T(x)
Definition: src_sinc.c:16
int sinc_magic_marker
Definition: src_sinc.c:33
int coeff_half_len
Definition: src_sinc.c:39
int b_len
Definition: src_sinc.c:45
coeff_t const * coeffs
Definition: src_sinc.c:43
double left_calc[128]
Definition: src_sinc.c:48
int channels
Definition: src_sinc.c:35
int index_inc
Definition: src_sinc.c:39

Referenced by psrc_set_converter().

◆ zoh_get_description()

const char * zoh_get_description ( int  src_enum)

Definition at line 137 of file src_zoh.c.

138{
139 if (src_enum == SRC_ZERO_ORDER_HOLD)
140 return "Zero order hold interpolator, very fast, poor quality." ;
141
142 return NULL ;
143} /* zoh_get_descrition */
@ SRC_ZERO_ORDER_HOLD
Definition: samplerate.h:162

Referenced by src_get_description().

◆ zoh_get_name()

const char * zoh_get_name ( int  src_enum)

Definition at line 128 of file src_zoh.c.

129{
130 if (src_enum == SRC_ZERO_ORDER_HOLD)
131 return "ZOH Interpolator" ;
132
133 return NULL ;
134} /* zoh_get_name */

Referenced by src_get_name().

◆ zoh_set_converter()

int zoh_set_converter ( SRC_PRIVATE psrc,
int  src_enum 
)

Definition at line 146 of file src_zoh.c.

147{ ZOH_DATA *priv = NULL ;
148
149 if (src_enum != SRC_ZERO_ORDER_HOLD)
150 return SRC_ERR_BAD_CONVERTER ;
151
152 if (psrc->private_data != NULL)
153 { free (psrc->private_data) ;
154 psrc->private_data = NULL ;
155 } ;
156
157 if (psrc->private_data == NULL)
158 { priv = calloc (1, sizeof (*priv) + psrc->channels * sizeof (float)) ;
159 psrc->private_data = priv ;
160 } ;
161
162 if (priv == NULL)
163 return SRC_ERR_MALLOC_FAILED ;
164
166 priv->channels = psrc->channels ;
167
170 psrc->reset = zoh_reset ;
171
172 zoh_reset (psrc) ;
173
174 return SRC_ERR_NO_ERROR ;
175} /* zoh_set_converter */
#define ZOH_MAGIC_MARKER
Definition: src_zoh.c:17
static int zoh_vari_process(SRC_PRIVATE *psrc, SRC_DATA *data)
Definition: src_zoh.c:32
static void zoh_reset(SRC_PRIVATE *psrc)
Definition: src_zoh.c:181
int channels
Definition: src_zoh.c:21
int zoh_magic_marker
Definition: src_zoh.c:20

Referenced by psrc_set_converter().