Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging
[qemu.git] / audio / mixeng.c
1 /*
2 * QEMU Mixing engine
3 *
4 * Copyright (c) 2004-2005 Vassili Karpov (malc)
5 * Copyright (c) 1998 Fabrice Bellard
6 *
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:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
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
23 * THE SOFTWARE.
24 */
25 #include "qemu-common.h"
26 #include "audio.h"
27
28 #define AUDIO_CAP "mixeng"
29 #include "audio_int.h"
30
31 /* 8 bit */
32 #define ENDIAN_CONVERSION natural
33 #define ENDIAN_CONVERT(v) (v)
34
35 /* Signed 8 bit */
36 #define BSIZE 8
37 #define ITYPE int
38 #define IN_MIN SCHAR_MIN
39 #define IN_MAX SCHAR_MAX
40 #define SIGNED
41 #define SHIFT 8
42 #include "mixeng_template.h"
43 #undef SIGNED
44 #undef IN_MAX
45 #undef IN_MIN
46 #undef BSIZE
47 #undef ITYPE
48 #undef SHIFT
49
50 /* Unsigned 8 bit */
51 #define BSIZE 8
52 #define ITYPE uint
53 #define IN_MIN 0
54 #define IN_MAX UCHAR_MAX
55 #define SHIFT 8
56 #include "mixeng_template.h"
57 #undef IN_MAX
58 #undef IN_MIN
59 #undef BSIZE
60 #undef ITYPE
61 #undef SHIFT
62
63 #undef ENDIAN_CONVERT
64 #undef ENDIAN_CONVERSION
65
66 /* Signed 16 bit */
67 #define BSIZE 16
68 #define ITYPE int
69 #define IN_MIN SHRT_MIN
70 #define IN_MAX SHRT_MAX
71 #define SIGNED
72 #define SHIFT 16
73 #define ENDIAN_CONVERSION natural
74 #define ENDIAN_CONVERT(v) (v)
75 #include "mixeng_template.h"
76 #undef ENDIAN_CONVERT
77 #undef ENDIAN_CONVERSION
78 #define ENDIAN_CONVERSION swap
79 #define ENDIAN_CONVERT(v) bswap16 (v)
80 #include "mixeng_template.h"
81 #undef ENDIAN_CONVERT
82 #undef ENDIAN_CONVERSION
83 #undef SIGNED
84 #undef IN_MAX
85 #undef IN_MIN
86 #undef BSIZE
87 #undef ITYPE
88 #undef SHIFT
89
90 /* Unsigned 16 bit */
91 #define BSIZE 16
92 #define ITYPE uint
93 #define IN_MIN 0
94 #define IN_MAX USHRT_MAX
95 #define SHIFT 16
96 #define ENDIAN_CONVERSION natural
97 #define ENDIAN_CONVERT(v) (v)
98 #include "mixeng_template.h"
99 #undef ENDIAN_CONVERT
100 #undef ENDIAN_CONVERSION
101 #define ENDIAN_CONVERSION swap
102 #define ENDIAN_CONVERT(v) bswap16 (v)
103 #include "mixeng_template.h"
104 #undef ENDIAN_CONVERT
105 #undef ENDIAN_CONVERSION
106 #undef IN_MAX
107 #undef IN_MIN
108 #undef BSIZE
109 #undef ITYPE
110 #undef SHIFT
111
112 /* Signed 32 bit */
113 #define BSIZE 32
114 #define ITYPE int
115 #define IN_MIN INT32_MIN
116 #define IN_MAX INT32_MAX
117 #define SIGNED
118 #define SHIFT 32
119 #define ENDIAN_CONVERSION natural
120 #define ENDIAN_CONVERT(v) (v)
121 #include "mixeng_template.h"
122 #undef ENDIAN_CONVERT
123 #undef ENDIAN_CONVERSION
124 #define ENDIAN_CONVERSION swap
125 #define ENDIAN_CONVERT(v) bswap32 (v)
126 #include "mixeng_template.h"
127 #undef ENDIAN_CONVERT
128 #undef ENDIAN_CONVERSION
129 #undef SIGNED
130 #undef IN_MAX
131 #undef IN_MIN
132 #undef BSIZE
133 #undef ITYPE
134 #undef SHIFT
135
136 /* Unsigned 32 bit */
137 #define BSIZE 32
138 #define ITYPE uint
139 #define IN_MIN 0
140 #define IN_MAX UINT32_MAX
141 #define SHIFT 32
142 #define ENDIAN_CONVERSION natural
143 #define ENDIAN_CONVERT(v) (v)
144 #include "mixeng_template.h"
145 #undef ENDIAN_CONVERT
146 #undef ENDIAN_CONVERSION
147 #define ENDIAN_CONVERSION swap
148 #define ENDIAN_CONVERT(v) bswap32 (v)
149 #include "mixeng_template.h"
150 #undef ENDIAN_CONVERT
151 #undef ENDIAN_CONVERSION
152 #undef IN_MAX
153 #undef IN_MIN
154 #undef BSIZE
155 #undef ITYPE
156 #undef SHIFT
157
158 t_sample *mixeng_conv[2][2][2][3] = {
159 {
160 {
161 {
162 conv_natural_uint8_t_to_mono,
163 conv_natural_uint16_t_to_mono,
164 conv_natural_uint32_t_to_mono
165 },
166 {
167 conv_natural_uint8_t_to_mono,
168 conv_swap_uint16_t_to_mono,
169 conv_swap_uint32_t_to_mono,
170 }
171 },
172 {
173 {
174 conv_natural_int8_t_to_mono,
175 conv_natural_int16_t_to_mono,
176 conv_natural_int32_t_to_mono
177 },
178 {
179 conv_natural_int8_t_to_mono,
180 conv_swap_int16_t_to_mono,
181 conv_swap_int32_t_to_mono
182 }
183 }
184 },
185 {
186 {
187 {
188 conv_natural_uint8_t_to_stereo,
189 conv_natural_uint16_t_to_stereo,
190 conv_natural_uint32_t_to_stereo
191 },
192 {
193 conv_natural_uint8_t_to_stereo,
194 conv_swap_uint16_t_to_stereo,
195 conv_swap_uint32_t_to_stereo
196 }
197 },
198 {
199 {
200 conv_natural_int8_t_to_stereo,
201 conv_natural_int16_t_to_stereo,
202 conv_natural_int32_t_to_stereo
203 },
204 {
205 conv_natural_int8_t_to_stereo,
206 conv_swap_int16_t_to_stereo,
207 conv_swap_int32_t_to_stereo,
208 }
209 }
210 }
211 };
212
213 f_sample *mixeng_clip[2][2][2][3] = {
214 {
215 {
216 {
217 clip_natural_uint8_t_from_mono,
218 clip_natural_uint16_t_from_mono,
219 clip_natural_uint32_t_from_mono
220 },
221 {
222 clip_natural_uint8_t_from_mono,
223 clip_swap_uint16_t_from_mono,
224 clip_swap_uint32_t_from_mono
225 }
226 },
227 {
228 {
229 clip_natural_int8_t_from_mono,
230 clip_natural_int16_t_from_mono,
231 clip_natural_int32_t_from_mono
232 },
233 {
234 clip_natural_int8_t_from_mono,
235 clip_swap_int16_t_from_mono,
236 clip_swap_int32_t_from_mono
237 }
238 }
239 },
240 {
241 {
242 {
243 clip_natural_uint8_t_from_stereo,
244 clip_natural_uint16_t_from_stereo,
245 clip_natural_uint32_t_from_stereo
246 },
247 {
248 clip_natural_uint8_t_from_stereo,
249 clip_swap_uint16_t_from_stereo,
250 clip_swap_uint32_t_from_stereo
251 }
252 },
253 {
254 {
255 clip_natural_int8_t_from_stereo,
256 clip_natural_int16_t_from_stereo,
257 clip_natural_int32_t_from_stereo
258 },
259 {
260 clip_natural_int8_t_from_stereo,
261 clip_swap_int16_t_from_stereo,
262 clip_swap_int32_t_from_stereo
263 }
264 }
265 }
266 };
267
268 /*
269 * August 21, 1998
270 * Copyright 1998 Fabrice Bellard.
271 *
272 * [Rewrote completly the code of Lance Norskog And Sundry
273 * Contributors with a more efficient algorithm.]
274 *
275 * This source code is freely redistributable and may be used for
276 * any purpose. This copyright notice must be maintained.
277 * Lance Norskog And Sundry Contributors are not responsible for
278 * the consequences of using this software.
279 */
280
281 /*
282 * Sound Tools rate change effect file.
283 */
284 /*
285 * Linear Interpolation.
286 *
287 * The use of fractional increment allows us to use no buffer. It
288 * avoid the problems at the end of the buffer we had with the old
289 * method which stored a possibly big buffer of size
290 * lcm(in_rate,out_rate).
291 *
292 * Limited to 16 bit samples and sampling frequency <= 65535 Hz. If
293 * the input & output frequencies are equal, a delay of one sample is
294 * introduced. Limited to processing 32-bit count worth of samples.
295 *
296 * 1 << FRAC_BITS evaluating to zero in several places. Changed with
297 * an (unsigned long) cast to make it safe. MarkMLl 2/1/99
298 */
299
300 /* Private data */
301 struct rate {
302 uint64_t opos;
303 uint64_t opos_inc;
304 uint32_t ipos; /* position in the input stream (integer) */
305 struct st_sample ilast; /* last sample in the input stream */
306 };
307
308 /*
309 * Prepare processing.
310 */
311 void *st_rate_start (int inrate, int outrate)
312 {
313 struct rate *rate = audio_calloc (AUDIO_FUNC, 1, sizeof (*rate));
314
315 if (!rate) {
316 dolog ("Could not allocate resampler (%zu bytes)\n", sizeof (*rate));
317 return NULL;
318 }
319
320 rate->opos = 0;
321
322 /* increment */
323 rate->opos_inc = ((uint64_t) inrate << 32) / outrate;
324
325 rate->ipos = 0;
326 rate->ilast.l = 0;
327 rate->ilast.r = 0;
328 return rate;
329 }
330
331 #define NAME st_rate_flow_mix
332 #define OP(a, b) a += b
333 #include "rate_template.h"
334
335 #define NAME st_rate_flow
336 #define OP(a, b) a = b
337 #include "rate_template.h"
338
339 void st_rate_stop (void *opaque)
340 {
341 g_free (opaque);
342 }
343
344 void mixeng_clear (struct st_sample *buf, int len)
345 {
346 memset (buf, 0, len * sizeof (struct st_sample));
347 }
348
349 void mixeng_volume (struct st_sample *buf, int len, struct mixeng_volume *vol)
350 {
351 if (vol->mute) {
352 mixeng_clear (buf, len);
353 return;
354 }
355
356 while (len--) {
357 #ifdef FLOAT_MIXENG
358 buf->l = buf->l * vol->l;
359 buf->r = buf->r * vol->r;
360 #else
361 buf->l = (buf->l * vol->l) >> 32;
362 buf->r = (buf->r * vol->r) >> 32;
363 #endif
364 buf += 1;
365 }
366 }