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1.1 root 1: /*
2: * QEMU Mixing engine
3: *
1.1.1.2 root 4: * Copyright (c) 2004-2005 Vassili Karpov (malc)
1.1 root 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: */
1.1.1.3 root 25: #include "qemu-common.h"
26: #include "audio.h"
1.1 root 27:
1.1.1.2 root 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 */
1.1.1.8 ! root 36: #define BSIZE 8
! 37: #define ITYPE int
1.1.1.2 root 38: #define IN_MIN SCHAR_MIN
39: #define IN_MAX SCHAR_MAX
1.1 root 40: #define SIGNED
1.1.1.2 root 41: #define SHIFT 8
1.1 root 42: #include "mixeng_template.h"
43: #undef SIGNED
44: #undef IN_MAX
45: #undef IN_MIN
1.1.1.8 ! root 46: #undef BSIZE
! 47: #undef ITYPE
1.1.1.2 root 48: #undef SHIFT
1.1 root 49:
1.1.1.2 root 50: /* Unsigned 8 bit */
1.1.1.8 ! root 51: #define BSIZE 8
! 52: #define ITYPE uint
1.1 root 53: #define IN_MIN 0
54: #define IN_MAX UCHAR_MAX
1.1.1.2 root 55: #define SHIFT 8
1.1 root 56: #include "mixeng_template.h"
57: #undef IN_MAX
58: #undef IN_MIN
1.1.1.8 ! root 59: #undef BSIZE
! 60: #undef ITYPE
1.1.1.2 root 61: #undef SHIFT
62:
63: #undef ENDIAN_CONVERT
64: #undef ENDIAN_CONVERSION
1.1 root 65:
1.1.1.2 root 66: /* Signed 16 bit */
1.1.1.8 ! root 67: #define BSIZE 16
! 68: #define ITYPE int
1.1 root 69: #define IN_MIN SHRT_MIN
70: #define IN_MAX SHRT_MAX
71: #define SIGNED
1.1.1.2 root 72: #define SHIFT 16
73: #define ENDIAN_CONVERSION natural
74: #define ENDIAN_CONVERT(v) (v)
1.1 root 75: #include "mixeng_template.h"
1.1.1.2 root 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
1.1 root 83: #undef SIGNED
84: #undef IN_MAX
85: #undef IN_MIN
1.1.1.8 ! root 86: #undef BSIZE
! 87: #undef ITYPE
1.1.1.2 root 88: #undef SHIFT
1.1 root 89:
1.1.1.3 root 90: /* Unsigned 16 bit */
1.1.1.8 ! root 91: #define BSIZE 16
! 92: #define ITYPE uint
1.1 root 93: #define IN_MIN 0
94: #define IN_MAX USHRT_MAX
1.1.1.2 root 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)
1.1 root 103: #include "mixeng_template.h"
1.1.1.2 root 104: #undef ENDIAN_CONVERT
105: #undef ENDIAN_CONVERSION
1.1 root 106: #undef IN_MAX
107: #undef IN_MIN
1.1.1.8 ! root 108: #undef BSIZE
! 109: #undef ITYPE
1.1.1.2 root 110: #undef SHIFT
1.1 root 111:
1.1.1.3 root 112: /* Signed 32 bit */
1.1.1.8 ! root 113: #define BSIZE 32
! 114: #define ITYPE int
1.1.1.3 root 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
1.1.1.8 ! root 132: #undef BSIZE
! 133: #undef ITYPE
1.1.1.3 root 134: #undef SHIFT
135:
1.1.1.5 root 136: /* Unsigned 32 bit */
1.1.1.8 ! root 137: #define BSIZE 32
! 138: #define ITYPE uint
1.1.1.3 root 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
1.1.1.8 ! root 154: #undef BSIZE
! 155: #undef ITYPE
1.1.1.3 root 156: #undef SHIFT
157:
158: t_sample *mixeng_conv[2][2][2][3] = {
1.1 root 159: {
160: {
1.1.1.2 root 161: {
162: conv_natural_uint8_t_to_mono,
1.1.1.3 root 163: conv_natural_uint16_t_to_mono,
164: conv_natural_uint32_t_to_mono
1.1.1.2 root 165: },
166: {
167: conv_natural_uint8_t_to_mono,
1.1.1.3 root 168: conv_swap_uint16_t_to_mono,
169: conv_swap_uint32_t_to_mono,
1.1.1.2 root 170: }
1.1 root 171: },
172: {
1.1.1.2 root 173: {
174: conv_natural_int8_t_to_mono,
1.1.1.3 root 175: conv_natural_int16_t_to_mono,
176: conv_natural_int32_t_to_mono
1.1.1.2 root 177: },
178: {
179: conv_natural_int8_t_to_mono,
1.1.1.3 root 180: conv_swap_int16_t_to_mono,
181: conv_swap_int32_t_to_mono
1.1.1.2 root 182: }
1.1 root 183: }
184: },
185: {
186: {
1.1.1.2 root 187: {
188: conv_natural_uint8_t_to_stereo,
1.1.1.3 root 189: conv_natural_uint16_t_to_stereo,
190: conv_natural_uint32_t_to_stereo
1.1.1.2 root 191: },
192: {
193: conv_natural_uint8_t_to_stereo,
1.1.1.3 root 194: conv_swap_uint16_t_to_stereo,
195: conv_swap_uint32_t_to_stereo
1.1.1.2 root 196: }
1.1 root 197: },
198: {
1.1.1.2 root 199: {
200: conv_natural_int8_t_to_stereo,
1.1.1.3 root 201: conv_natural_int16_t_to_stereo,
202: conv_natural_int32_t_to_stereo
1.1.1.2 root 203: },
204: {
205: conv_natural_int8_t_to_stereo,
1.1.1.3 root 206: conv_swap_int16_t_to_stereo,
207: conv_swap_int32_t_to_stereo,
1.1.1.2 root 208: }
1.1 root 209: }
210: }
211: };
212:
1.1.1.3 root 213: f_sample *mixeng_clip[2][2][2][3] = {
1.1 root 214: {
215: {
1.1.1.2 root 216: {
217: clip_natural_uint8_t_from_mono,
1.1.1.3 root 218: clip_natural_uint16_t_from_mono,
219: clip_natural_uint32_t_from_mono
1.1.1.2 root 220: },
221: {
222: clip_natural_uint8_t_from_mono,
1.1.1.3 root 223: clip_swap_uint16_t_from_mono,
224: clip_swap_uint32_t_from_mono
1.1.1.2 root 225: }
1.1 root 226: },
227: {
1.1.1.2 root 228: {
229: clip_natural_int8_t_from_mono,
1.1.1.3 root 230: clip_natural_int16_t_from_mono,
231: clip_natural_int32_t_from_mono
1.1.1.2 root 232: },
233: {
234: clip_natural_int8_t_from_mono,
1.1.1.3 root 235: clip_swap_int16_t_from_mono,
236: clip_swap_int32_t_from_mono
1.1.1.2 root 237: }
1.1 root 238: }
239: },
240: {
241: {
1.1.1.2 root 242: {
243: clip_natural_uint8_t_from_stereo,
1.1.1.3 root 244: clip_natural_uint16_t_from_stereo,
245: clip_natural_uint32_t_from_stereo
1.1.1.2 root 246: },
247: {
248: clip_natural_uint8_t_from_stereo,
1.1.1.3 root 249: clip_swap_uint16_t_from_stereo,
250: clip_swap_uint32_t_from_stereo
1.1.1.2 root 251: }
1.1 root 252: },
253: {
1.1.1.2 root 254: {
255: clip_natural_int8_t_from_stereo,
1.1.1.3 root 256: clip_natural_int16_t_from_stereo,
257: clip_natural_int32_t_from_stereo
1.1.1.2 root 258: },
259: {
260: clip_natural_int8_t_from_stereo,
1.1.1.3 root 261: clip_swap_int16_t_from_stereo,
262: clip_swap_int32_t_from_stereo
1.1.1.2 root 263: }
1.1 root 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
1.1.1.2 root 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.
1.1 root 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 */
1.1.1.2 root 301: struct rate {
1.1 root 302: uint64_t opos;
303: uint64_t opos_inc;
304: uint32_t ipos; /* position in the input stream (integer) */
1.1.1.4 root 305: struct st_sample ilast; /* last sample in the input stream */
1.1.1.2 root 306: };
1.1 root 307:
308: /*
309: * Prepare processing.
310: */
311: void *st_rate_start (int inrate, int outrate)
312: {
1.1.1.2 root 313: struct rate *rate = audio_calloc (AUDIO_FUNC, 1, sizeof (*rate));
1.1 root 314:
315: if (!rate) {
1.1.1.2 root 316: dolog ("Could not allocate resampler (%zu bytes)\n", sizeof (*rate));
317: return NULL;
1.1 root 318: }
319:
320: rate->opos = 0;
321:
322: /* increment */
1.1.1.2 root 323: rate->opos_inc = ((uint64_t) inrate << 32) / outrate;
1.1 root 324:
325: rate->ipos = 0;
326: rate->ilast.l = 0;
327: rate->ilast.r = 0;
328: return rate;
329: }
330:
1.1.1.2 root 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"
1.1 root 338:
339: void st_rate_stop (void *opaque)
340: {
1.1.1.7 root 341: g_free (opaque);
1.1 root 342: }
1.1.1.2 root 343:
1.1.1.4 root 344: void mixeng_clear (struct st_sample *buf, int len)
1.1.1.2 root 345: {
1.1.1.4 root 346: memset (buf, 0, len * sizeof (struct st_sample));
1.1.1.2 root 347: }
1.1.1.6 root 348:
349: void mixeng_volume (struct st_sample *buf, int len, struct mixeng_volume *vol)
350: {
351: #ifdef CONFIG_MIXEMU
352: if (vol->mute) {
353: mixeng_clear (buf, len);
354: return;
355: }
356:
357: while (len--) {
358: #ifdef FLOAT_MIXENG
359: buf->l = buf->l * vol->l;
360: buf->r = buf->r * vol->r;
361: #else
362: buf->l = (buf->l * vol->l) >> 32;
363: buf->r = (buf->r * vol->r) >> 32;
364: #endif
365: buf += 1;
366: }
367: #else
368: (void) buf;
369: (void) len;
370: (void) vol;
371: #endif
372: }
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