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1 | 85571bc7 | bellard | /*
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2 | 85571bc7 | bellard | * QEMU Mixing engine
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3 | 85571bc7 | bellard | *
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4 | 1d14ffa9 | bellard | * Copyright (c) 2004-2005 Vassili Karpov (malc)
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5 | 85571bc7 | bellard | * Copyright (c) 1998 Fabrice Bellard
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6 | 85571bc7 | bellard | *
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7 | 85571bc7 | bellard | * Permission is hereby granted, free of charge, to any person obtaining a copy
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8 | 85571bc7 | bellard | * of this software and associated documentation files (the "Software"), to deal
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9 | 85571bc7 | bellard | * in the Software without restriction, including without limitation the rights
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10 | 85571bc7 | bellard | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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11 | 85571bc7 | bellard | * copies of the Software, and to permit persons to whom the Software is
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12 | 85571bc7 | bellard | * furnished to do so, subject to the following conditions:
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13 | 85571bc7 | bellard | *
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14 | 85571bc7 | bellard | * The above copyright notice and this permission notice shall be included in
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15 | 85571bc7 | bellard | * all copies or substantial portions of the Software.
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16 | 85571bc7 | bellard | *
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17 | 85571bc7 | bellard | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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18 | 85571bc7 | bellard | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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19 | 85571bc7 | bellard | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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20 | 85571bc7 | bellard | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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21 | 85571bc7 | bellard | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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22 | 85571bc7 | bellard | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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23 | 85571bc7 | bellard | * THE SOFTWARE.
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24 | 85571bc7 | bellard | */
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25 | 85571bc7 | bellard | #include "vl.h" |
26 | 85571bc7 | bellard | |
27 | 1d14ffa9 | bellard | #define AUDIO_CAP "mixeng" |
28 | 1d14ffa9 | bellard | #include "audio_int.h" |
29 | 1d14ffa9 | bellard | |
30 | 1d14ffa9 | bellard | #define NOVOL
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31 | 1d14ffa9 | bellard | |
32 | 1d14ffa9 | bellard | /* 8 bit */
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33 | 1d14ffa9 | bellard | #define ENDIAN_CONVERSION natural
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34 | 1d14ffa9 | bellard | #define ENDIAN_CONVERT(v) (v)
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35 | 1d14ffa9 | bellard | |
36 | 1d14ffa9 | bellard | /* Signed 8 bit */
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37 | 85571bc7 | bellard | #define IN_T int8_t
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38 | 1d14ffa9 | bellard | #define IN_MIN SCHAR_MIN
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39 | 1d14ffa9 | bellard | #define IN_MAX SCHAR_MAX
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40 | 85571bc7 | bellard | #define SIGNED
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41 | 1d14ffa9 | bellard | #define SHIFT 8 |
42 | 85571bc7 | bellard | #include "mixeng_template.h" |
43 | 85571bc7 | bellard | #undef SIGNED
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44 | 85571bc7 | bellard | #undef IN_MAX
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45 | 85571bc7 | bellard | #undef IN_MIN
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46 | 85571bc7 | bellard | #undef IN_T
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47 | 1d14ffa9 | bellard | #undef SHIFT
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48 | 85571bc7 | bellard | |
49 | 1d14ffa9 | bellard | /* Unsigned 8 bit */
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50 | 85571bc7 | bellard | #define IN_T uint8_t
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51 | 85571bc7 | bellard | #define IN_MIN 0 |
52 | 85571bc7 | bellard | #define IN_MAX UCHAR_MAX
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53 | 1d14ffa9 | bellard | #define SHIFT 8 |
54 | 85571bc7 | bellard | #include "mixeng_template.h" |
55 | 85571bc7 | bellard | #undef IN_MAX
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56 | 85571bc7 | bellard | #undef IN_MIN
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57 | 85571bc7 | bellard | #undef IN_T
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58 | 1d14ffa9 | bellard | #undef SHIFT
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59 | 1d14ffa9 | bellard | |
60 | 1d14ffa9 | bellard | #undef ENDIAN_CONVERT
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61 | 1d14ffa9 | bellard | #undef ENDIAN_CONVERSION
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62 | 85571bc7 | bellard | |
63 | 1d14ffa9 | bellard | /* Signed 16 bit */
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64 | 85571bc7 | bellard | #define IN_T int16_t
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65 | 85571bc7 | bellard | #define IN_MIN SHRT_MIN
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66 | 85571bc7 | bellard | #define IN_MAX SHRT_MAX
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67 | 85571bc7 | bellard | #define SIGNED
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68 | 1d14ffa9 | bellard | #define SHIFT 16 |
69 | 1d14ffa9 | bellard | #define ENDIAN_CONVERSION natural
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70 | 1d14ffa9 | bellard | #define ENDIAN_CONVERT(v) (v)
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71 | 85571bc7 | bellard | #include "mixeng_template.h" |
72 | 1d14ffa9 | bellard | #undef ENDIAN_CONVERT
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73 | 1d14ffa9 | bellard | #undef ENDIAN_CONVERSION
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74 | 1d14ffa9 | bellard | #define ENDIAN_CONVERSION swap
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75 | 1d14ffa9 | bellard | #define ENDIAN_CONVERT(v) bswap16 (v)
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76 | 1d14ffa9 | bellard | #include "mixeng_template.h" |
77 | 1d14ffa9 | bellard | #undef ENDIAN_CONVERT
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78 | 1d14ffa9 | bellard | #undef ENDIAN_CONVERSION
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79 | 85571bc7 | bellard | #undef SIGNED
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80 | 85571bc7 | bellard | #undef IN_MAX
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81 | 85571bc7 | bellard | #undef IN_MIN
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82 | 85571bc7 | bellard | #undef IN_T
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83 | 1d14ffa9 | bellard | #undef SHIFT
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84 | 85571bc7 | bellard | |
85 | 85571bc7 | bellard | #define IN_T uint16_t
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86 | 85571bc7 | bellard | #define IN_MIN 0 |
87 | 85571bc7 | bellard | #define IN_MAX USHRT_MAX
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88 | 1d14ffa9 | bellard | #define SHIFT 16 |
89 | 1d14ffa9 | bellard | #define ENDIAN_CONVERSION natural
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90 | 1d14ffa9 | bellard | #define ENDIAN_CONVERT(v) (v)
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91 | 1d14ffa9 | bellard | #include "mixeng_template.h" |
92 | 1d14ffa9 | bellard | #undef ENDIAN_CONVERT
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93 | 1d14ffa9 | bellard | #undef ENDIAN_CONVERSION
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94 | 1d14ffa9 | bellard | #define ENDIAN_CONVERSION swap
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95 | 1d14ffa9 | bellard | #define ENDIAN_CONVERT(v) bswap16 (v)
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96 | 85571bc7 | bellard | #include "mixeng_template.h" |
97 | 1d14ffa9 | bellard | #undef ENDIAN_CONVERT
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98 | 1d14ffa9 | bellard | #undef ENDIAN_CONVERSION
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99 | 85571bc7 | bellard | #undef IN_MAX
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100 | 85571bc7 | bellard | #undef IN_MIN
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101 | 85571bc7 | bellard | #undef IN_T
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102 | 1d14ffa9 | bellard | #undef SHIFT
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103 | 85571bc7 | bellard | |
104 | 1d14ffa9 | bellard | t_sample *mixeng_conv[2][2][2][2] = { |
105 | 85571bc7 | bellard | { |
106 | 85571bc7 | bellard | { |
107 | 1d14ffa9 | bellard | { |
108 | 1d14ffa9 | bellard | conv_natural_uint8_t_to_mono, |
109 | 1d14ffa9 | bellard | conv_natural_uint16_t_to_mono |
110 | 1d14ffa9 | bellard | }, |
111 | 1d14ffa9 | bellard | { |
112 | 1d14ffa9 | bellard | conv_natural_uint8_t_to_mono, |
113 | 1d14ffa9 | bellard | conv_swap_uint16_t_to_mono |
114 | 1d14ffa9 | bellard | } |
115 | 85571bc7 | bellard | }, |
116 | 85571bc7 | bellard | { |
117 | 1d14ffa9 | bellard | { |
118 | 1d14ffa9 | bellard | conv_natural_int8_t_to_mono, |
119 | 1d14ffa9 | bellard | conv_natural_int16_t_to_mono |
120 | 1d14ffa9 | bellard | }, |
121 | 1d14ffa9 | bellard | { |
122 | 1d14ffa9 | bellard | conv_natural_int8_t_to_mono, |
123 | 1d14ffa9 | bellard | conv_swap_int16_t_to_mono |
124 | 1d14ffa9 | bellard | } |
125 | 85571bc7 | bellard | } |
126 | 85571bc7 | bellard | }, |
127 | 85571bc7 | bellard | { |
128 | 85571bc7 | bellard | { |
129 | 1d14ffa9 | bellard | { |
130 | 1d14ffa9 | bellard | conv_natural_uint8_t_to_stereo, |
131 | 1d14ffa9 | bellard | conv_natural_uint16_t_to_stereo |
132 | 1d14ffa9 | bellard | }, |
133 | 1d14ffa9 | bellard | { |
134 | 1d14ffa9 | bellard | conv_natural_uint8_t_to_stereo, |
135 | 1d14ffa9 | bellard | conv_swap_uint16_t_to_stereo |
136 | 1d14ffa9 | bellard | } |
137 | 85571bc7 | bellard | }, |
138 | 85571bc7 | bellard | { |
139 | 1d14ffa9 | bellard | { |
140 | 1d14ffa9 | bellard | conv_natural_int8_t_to_stereo, |
141 | 1d14ffa9 | bellard | conv_natural_int16_t_to_stereo |
142 | 1d14ffa9 | bellard | }, |
143 | 1d14ffa9 | bellard | { |
144 | 1d14ffa9 | bellard | conv_natural_int8_t_to_stereo, |
145 | 1d14ffa9 | bellard | conv_swap_int16_t_to_stereo |
146 | 1d14ffa9 | bellard | } |
147 | 85571bc7 | bellard | } |
148 | 85571bc7 | bellard | } |
149 | 85571bc7 | bellard | }; |
150 | 85571bc7 | bellard | |
151 | 1d14ffa9 | bellard | f_sample *mixeng_clip[2][2][2][2] = { |
152 | 85571bc7 | bellard | { |
153 | 85571bc7 | bellard | { |
154 | 1d14ffa9 | bellard | { |
155 | 1d14ffa9 | bellard | clip_natural_uint8_t_from_mono, |
156 | 1d14ffa9 | bellard | clip_natural_uint16_t_from_mono |
157 | 1d14ffa9 | bellard | }, |
158 | 1d14ffa9 | bellard | { |
159 | 1d14ffa9 | bellard | clip_natural_uint8_t_from_mono, |
160 | 1d14ffa9 | bellard | clip_swap_uint16_t_from_mono |
161 | 1d14ffa9 | bellard | } |
162 | 85571bc7 | bellard | }, |
163 | 85571bc7 | bellard | { |
164 | 1d14ffa9 | bellard | { |
165 | 1d14ffa9 | bellard | clip_natural_int8_t_from_mono, |
166 | 1d14ffa9 | bellard | clip_natural_int16_t_from_mono |
167 | 1d14ffa9 | bellard | }, |
168 | 1d14ffa9 | bellard | { |
169 | 1d14ffa9 | bellard | clip_natural_int8_t_from_mono, |
170 | 1d14ffa9 | bellard | clip_swap_int16_t_from_mono |
171 | 1d14ffa9 | bellard | } |
172 | 85571bc7 | bellard | } |
173 | 85571bc7 | bellard | }, |
174 | 85571bc7 | bellard | { |
175 | 85571bc7 | bellard | { |
176 | 1d14ffa9 | bellard | { |
177 | 1d14ffa9 | bellard | clip_natural_uint8_t_from_stereo, |
178 | 1d14ffa9 | bellard | clip_natural_uint16_t_from_stereo |
179 | 1d14ffa9 | bellard | }, |
180 | 1d14ffa9 | bellard | { |
181 | 1d14ffa9 | bellard | clip_natural_uint8_t_from_stereo, |
182 | 1d14ffa9 | bellard | clip_swap_uint16_t_from_stereo |
183 | 1d14ffa9 | bellard | } |
184 | 85571bc7 | bellard | }, |
185 | 85571bc7 | bellard | { |
186 | 1d14ffa9 | bellard | { |
187 | 1d14ffa9 | bellard | clip_natural_int8_t_from_stereo, |
188 | 1d14ffa9 | bellard | clip_natural_int16_t_from_stereo |
189 | 1d14ffa9 | bellard | }, |
190 | 1d14ffa9 | bellard | { |
191 | 1d14ffa9 | bellard | clip_natural_int8_t_from_stereo, |
192 | 1d14ffa9 | bellard | clip_swap_int16_t_from_stereo |
193 | 1d14ffa9 | bellard | } |
194 | 85571bc7 | bellard | } |
195 | 85571bc7 | bellard | } |
196 | 85571bc7 | bellard | }; |
197 | 85571bc7 | bellard | |
198 | 85571bc7 | bellard | /*
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199 | 85571bc7 | bellard | * August 21, 1998
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200 | 85571bc7 | bellard | * Copyright 1998 Fabrice Bellard.
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201 | 85571bc7 | bellard | *
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202 | 85571bc7 | bellard | * [Rewrote completly the code of Lance Norskog And Sundry
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203 | 85571bc7 | bellard | * Contributors with a more efficient algorithm.]
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204 | 85571bc7 | bellard | *
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205 | 85571bc7 | bellard | * This source code is freely redistributable and may be used for
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206 | 1d14ffa9 | bellard | * any purpose. This copyright notice must be maintained.
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207 | 1d14ffa9 | bellard | * Lance Norskog And Sundry Contributors are not responsible for
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208 | 1d14ffa9 | bellard | * the consequences of using this software.
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209 | 85571bc7 | bellard | */
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210 | 85571bc7 | bellard | |
211 | 85571bc7 | bellard | /*
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212 | 85571bc7 | bellard | * Sound Tools rate change effect file.
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213 | 85571bc7 | bellard | */
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214 | 85571bc7 | bellard | /*
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215 | 85571bc7 | bellard | * Linear Interpolation.
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216 | 85571bc7 | bellard | *
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217 | 85571bc7 | bellard | * The use of fractional increment allows us to use no buffer. It
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218 | 85571bc7 | bellard | * avoid the problems at the end of the buffer we had with the old
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219 | 85571bc7 | bellard | * method which stored a possibly big buffer of size
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220 | 85571bc7 | bellard | * lcm(in_rate,out_rate).
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221 | 85571bc7 | bellard | *
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222 | 85571bc7 | bellard | * Limited to 16 bit samples and sampling frequency <= 65535 Hz. If
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223 | 85571bc7 | bellard | * the input & output frequencies are equal, a delay of one sample is
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224 | 85571bc7 | bellard | * introduced. Limited to processing 32-bit count worth of samples.
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225 | 85571bc7 | bellard | *
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226 | 85571bc7 | bellard | * 1 << FRAC_BITS evaluating to zero in several places. Changed with
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227 | 85571bc7 | bellard | * an (unsigned long) cast to make it safe. MarkMLl 2/1/99
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228 | 85571bc7 | bellard | */
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229 | 85571bc7 | bellard | |
230 | 85571bc7 | bellard | /* Private data */
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231 | c0fe3827 | bellard | struct rate {
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232 | 85571bc7 | bellard | uint64_t opos; |
233 | 85571bc7 | bellard | uint64_t opos_inc; |
234 | 85571bc7 | bellard | uint32_t ipos; /* position in the input stream (integer) */
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235 | 85571bc7 | bellard | st_sample_t ilast; /* last sample in the input stream */
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236 | c0fe3827 | bellard | }; |
237 | 85571bc7 | bellard | |
238 | 85571bc7 | bellard | /*
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239 | 85571bc7 | bellard | * Prepare processing.
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240 | 85571bc7 | bellard | */
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241 | 85571bc7 | bellard | void *st_rate_start (int inrate, int outrate) |
242 | 85571bc7 | bellard | { |
243 | c0fe3827 | bellard | struct rate *rate = audio_calloc (AUDIO_FUNC, 1, sizeof (*rate)); |
244 | 85571bc7 | bellard | |
245 | 85571bc7 | bellard | if (!rate) {
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246 | e7cad338 | bellard | dolog ("Could not allocate resampler (%zu bytes)\n", sizeof (*rate)); |
247 | 1d14ffa9 | bellard | return NULL; |
248 | 85571bc7 | bellard | } |
249 | 85571bc7 | bellard | |
250 | 85571bc7 | bellard | rate->opos = 0;
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251 | 85571bc7 | bellard | |
252 | 85571bc7 | bellard | /* increment */
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253 | 1d14ffa9 | bellard | rate->opos_inc = ((uint64_t) inrate << 32) / outrate;
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254 | 85571bc7 | bellard | |
255 | 85571bc7 | bellard | rate->ipos = 0;
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256 | 85571bc7 | bellard | rate->ilast.l = 0;
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257 | 85571bc7 | bellard | rate->ilast.r = 0;
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258 | 85571bc7 | bellard | return rate;
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259 | 85571bc7 | bellard | } |
260 | 85571bc7 | bellard | |
261 | 1d14ffa9 | bellard | #define NAME st_rate_flow_mix
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262 | 1d14ffa9 | bellard | #define OP(a, b) a += b
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263 | 1d14ffa9 | bellard | #include "rate_template.h" |
264 | 85571bc7 | bellard | |
265 | 1d14ffa9 | bellard | #define NAME st_rate_flow
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266 | 1d14ffa9 | bellard | #define OP(a, b) a = b
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267 | 1d14ffa9 | bellard | #include "rate_template.h" |
268 | 85571bc7 | bellard | |
269 | 85571bc7 | bellard | void st_rate_stop (void *opaque) |
270 | 85571bc7 | bellard | { |
271 | 85571bc7 | bellard | qemu_free (opaque); |
272 | 85571bc7 | bellard | } |
273 | 1d14ffa9 | bellard | |
274 | 1d14ffa9 | bellard | void mixeng_clear (st_sample_t *buf, int len) |
275 | 1d14ffa9 | bellard | { |
276 | 1d14ffa9 | bellard | memset (buf, 0, len * sizeof (st_sample_t)); |
277 | 1d14ffa9 | bellard | } |