4 * Copyright (c) 2004-2005 Vassili Karpov (malc)
5 * Copyright (c) 1998 Fabrice Bellard
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
27 #define AUDIO_CAP "mixeng"
28 #include "audio_int.h"
33 #define ENDIAN_CONVERSION natural
34 #define ENDIAN_CONVERT(v) (v)
38 #define IN_MIN SCHAR_MIN
39 #define IN_MAX SCHAR_MAX
42 #include "mixeng_template.h"
52 #define IN_MAX UCHAR_MAX
54 #include "mixeng_template.h"
61 #undef ENDIAN_CONVERSION
65 #define IN_MIN SHRT_MIN
66 #define IN_MAX SHRT_MAX
69 #define ENDIAN_CONVERSION natural
70 #define ENDIAN_CONVERT(v) (v)
71 #include "mixeng_template.h"
73 #undef ENDIAN_CONVERSION
74 #define ENDIAN_CONVERSION swap
75 #define ENDIAN_CONVERT(v) bswap16 (v)
76 #include "mixeng_template.h"
78 #undef ENDIAN_CONVERSION
88 #define IN_MAX USHRT_MAX
90 #define ENDIAN_CONVERSION natural
91 #define ENDIAN_CONVERT(v) (v)
92 #include "mixeng_template.h"
94 #undef ENDIAN_CONVERSION
95 #define ENDIAN_CONVERSION swap
96 #define ENDIAN_CONVERT(v) bswap16 (v)
97 #include "mixeng_template.h"
99 #undef ENDIAN_CONVERSION
107 #define IN_MIN INT32_MIN
108 #define IN_MAX INT32_MAX
111 #define ENDIAN_CONVERSION natural
112 #define ENDIAN_CONVERT(v) (v)
113 #include "mixeng_template.h"
114 #undef ENDIAN_CONVERT
115 #undef ENDIAN_CONVERSION
116 #define ENDIAN_CONVERSION swap
117 #define ENDIAN_CONVERT(v) bswap32 (v)
118 #include "mixeng_template.h"
119 #undef ENDIAN_CONVERT
120 #undef ENDIAN_CONVERSION
127 /* Unsigned 16 bit */
128 #define IN_T uint32_t
130 #define IN_MAX UINT32_MAX
132 #define ENDIAN_CONVERSION natural
133 #define ENDIAN_CONVERT(v) (v)
134 #include "mixeng_template.h"
135 #undef ENDIAN_CONVERT
136 #undef ENDIAN_CONVERSION
137 #define ENDIAN_CONVERSION swap
138 #define ENDIAN_CONVERT(v) bswap32 (v)
139 #include "mixeng_template.h"
140 #undef ENDIAN_CONVERT
141 #undef ENDIAN_CONVERSION
147 t_sample
*mixeng_conv
[2][2][2][3] = {
151 conv_natural_uint8_t_to_mono
,
152 conv_natural_uint16_t_to_mono
,
153 conv_natural_uint32_t_to_mono
156 conv_natural_uint8_t_to_mono
,
157 conv_swap_uint16_t_to_mono
,
158 conv_swap_uint32_t_to_mono
,
163 conv_natural_int8_t_to_mono
,
164 conv_natural_int16_t_to_mono
,
165 conv_natural_int32_t_to_mono
168 conv_natural_int8_t_to_mono
,
169 conv_swap_int16_t_to_mono
,
170 conv_swap_int32_t_to_mono
177 conv_natural_uint8_t_to_stereo
,
178 conv_natural_uint16_t_to_stereo
,
179 conv_natural_uint32_t_to_stereo
182 conv_natural_uint8_t_to_stereo
,
183 conv_swap_uint16_t_to_stereo
,
184 conv_swap_uint32_t_to_stereo
189 conv_natural_int8_t_to_stereo
,
190 conv_natural_int16_t_to_stereo
,
191 conv_natural_int32_t_to_stereo
194 conv_natural_int8_t_to_stereo
,
195 conv_swap_int16_t_to_stereo
,
196 conv_swap_int32_t_to_stereo
,
202 f_sample
*mixeng_clip
[2][2][2][3] = {
206 clip_natural_uint8_t_from_mono
,
207 clip_natural_uint16_t_from_mono
,
208 clip_natural_uint32_t_from_mono
211 clip_natural_uint8_t_from_mono
,
212 clip_swap_uint16_t_from_mono
,
213 clip_swap_uint32_t_from_mono
218 clip_natural_int8_t_from_mono
,
219 clip_natural_int16_t_from_mono
,
220 clip_natural_int32_t_from_mono
223 clip_natural_int8_t_from_mono
,
224 clip_swap_int16_t_from_mono
,
225 clip_swap_int32_t_from_mono
232 clip_natural_uint8_t_from_stereo
,
233 clip_natural_uint16_t_from_stereo
,
234 clip_natural_uint32_t_from_stereo
237 clip_natural_uint8_t_from_stereo
,
238 clip_swap_uint16_t_from_stereo
,
239 clip_swap_uint32_t_from_stereo
244 clip_natural_int8_t_from_stereo
,
245 clip_natural_int16_t_from_stereo
,
246 clip_natural_int32_t_from_stereo
249 clip_natural_int8_t_from_stereo
,
250 clip_swap_int16_t_from_stereo
,
251 clip_swap_int32_t_from_stereo
259 * Copyright 1998 Fabrice Bellard.
261 * [Rewrote completly the code of Lance Norskog And Sundry
262 * Contributors with a more efficient algorithm.]
264 * This source code is freely redistributable and may be used for
265 * any purpose. This copyright notice must be maintained.
266 * Lance Norskog And Sundry Contributors are not responsible for
267 * the consequences of using this software.
271 * Sound Tools rate change effect file.
274 * Linear Interpolation.
276 * The use of fractional increment allows us to use no buffer. It
277 * avoid the problems at the end of the buffer we had with the old
278 * method which stored a possibly big buffer of size
279 * lcm(in_rate,out_rate).
281 * Limited to 16 bit samples and sampling frequency <= 65535 Hz. If
282 * the input & output frequencies are equal, a delay of one sample is
283 * introduced. Limited to processing 32-bit count worth of samples.
285 * 1 << FRAC_BITS evaluating to zero in several places. Changed with
286 * an (unsigned long) cast to make it safe. MarkMLl 2/1/99
293 uint32_t ipos
; /* position in the input stream (integer) */
294 st_sample_t ilast
; /* last sample in the input stream */
298 * Prepare processing.
300 void *st_rate_start (int inrate
, int outrate
)
302 struct rate
*rate
= audio_calloc (AUDIO_FUNC
, 1, sizeof (*rate
));
305 dolog ("Could not allocate resampler (%zu bytes)\n", sizeof (*rate
));
312 rate
->opos_inc
= ((uint64_t) inrate
<< 32) / outrate
;
320 #define NAME st_rate_flow_mix
321 #define OP(a, b) a += b
322 #include "rate_template.h"
324 #define NAME st_rate_flow
325 #define OP(a, b) a = b
326 #include "rate_template.h"
328 void st_rate_stop (void *opaque
)
333 void mixeng_clear (st_sample_t
*buf
, int len
)
335 memset (buf
, 0, len
* sizeof (st_sample_t
));