]>
Commit | Line | Data |
---|---|---|
48e2f01c | 1 | /* |
2 | * Copyright (C) 2013 nu774 | |
3 | * For conditions of distribution and use, see copyright notice in COPYING | |
4 | */ | |
5 | #if HAVE_CONFIG_H | |
6 | # include "config.h" | |
7 | #endif | |
8 | #if HAVE_STDINT_H | |
9 | # include <stdint.h> | |
10 | #endif | |
11 | #include <stdlib.h> | |
12 | #include <math.h> | |
13 | #include "lpcm.h" | |
14 | #include "m4af_endian.h" | |
15 | ||
5ccbfaa7 | 16 | #if defined(_MSC_VER) && _MSC_VER < 1800 |
48e2f01c | 17 | # ifdef _M_IX86 |
18 | inline int lrint(double x) | |
19 | { | |
20 | int n; | |
21 | _asm { | |
22 | fld x | |
23 | fistp n | |
24 | } | |
25 | return n; | |
26 | } | |
27 | # else | |
28 | # include <emmintrin.h> | |
29 | inline int lrint(double x) | |
30 | { | |
31 | return _mm_cvtsd_si32(_mm_load_sd(&x)); | |
32 | } | |
33 | # endif | |
34 | #endif | |
35 | ||
01993d67 | 36 | static |
6da14aae | 37 | inline double pcm_clip(double n, double min_value, double max_value) |
48e2f01c | 38 | { |
39 | if (n < min_value) | |
40 | return min_value; | |
41 | else if (n > max_value) | |
42 | return max_value; | |
43 | return n; | |
44 | } | |
01993d67 | 45 | static |
48e2f01c | 46 | inline float pcm_i2f(int32_t n) |
47 | { | |
48 | union { | |
49 | int32_t ivalue; | |
50 | float fvalue; | |
51 | } u; | |
52 | u.ivalue = n; | |
53 | return u.fvalue; | |
54 | } | |
01993d67 | 55 | static |
48e2f01c | 56 | inline double pcm_i2d(int64_t n) |
57 | { | |
58 | union { | |
59 | int64_t ivalue; | |
60 | double fvalue; | |
61 | } u; | |
62 | u.ivalue = n; | |
63 | return u.fvalue; | |
64 | } | |
01993d67 | 65 | static |
48e2f01c | 66 | inline int16_t pcm_quantize_s32(int32_t n) |
67 | { | |
68 | n = ((n >> 15) + 1) >> 1; | |
69 | return (n == 0x8000) ? 0x7fff : n; | |
70 | } | |
01993d67 | 71 | static |
48e2f01c | 72 | inline int16_t pcm_quantize_f64(double v) |
73 | { | |
6da14aae | 74 | return (int16_t)lrint(pcm_clip(v * 32768.0, -32768.0, 32767.0)); |
48e2f01c | 75 | } |
01993d67 | 76 | static |
48e2f01c | 77 | inline int16_t pcm_s8_to_s16(int8_t n) |
78 | { | |
79 | return n << 8; | |
80 | } | |
01993d67 | 81 | static |
48e2f01c | 82 | inline int16_t pcm_u8_to_s16(uint8_t n) |
83 | { | |
84 | return (n << 8) ^ 0x8000; | |
85 | } | |
01993d67 | 86 | static |
48e2f01c | 87 | inline int16_t pcm_s16le_to_s16(int16_t n) |
88 | { | |
89 | return m4af_ltoh16(n); | |
90 | } | |
01993d67 | 91 | static |
48e2f01c | 92 | inline int16_t pcm_s16be_to_s16(int16_t n) |
93 | { | |
94 | return m4af_btoh16(n); | |
95 | } | |
01993d67 | 96 | static |
48e2f01c | 97 | inline int16_t pcm_u16le_to_s16(uint16_t n) |
98 | { | |
99 | return m4af_ltoh16(n) ^ 0x8000; | |
100 | } | |
01993d67 | 101 | static |
48e2f01c | 102 | inline int16_t pcm_u16be_to_s16(uint16_t n) |
103 | { | |
104 | return m4af_btoh16(n) ^ 0x8000; | |
105 | } | |
01993d67 | 106 | static |
48e2f01c | 107 | inline int32_t pcm_s24le_to_s32(uint8_t *p) |
108 | { | |
109 | return p[0]<<8 | p[1]<<16 | p[2]<<24; | |
110 | } | |
01993d67 | 111 | static |
48e2f01c | 112 | inline int32_t pcm_s24be_to_s32(uint8_t *p) |
113 | { | |
114 | return p[0]<<24 | p[1]<<16 | p[2]<<8; | |
115 | } | |
01993d67 | 116 | static |
48e2f01c | 117 | inline int32_t pcm_u24le_to_s32(uint8_t *p) |
118 | { | |
119 | return pcm_s24le_to_s32(p) ^ 0x80000000; | |
120 | } | |
01993d67 | 121 | static |
48e2f01c | 122 | inline int32_t pcm_u24be_to_s32(uint8_t *p) |
123 | { | |
124 | return pcm_s24be_to_s32(p) ^ 0x80000000; | |
125 | } | |
01993d67 | 126 | static |
48e2f01c | 127 | inline int16_t pcm_s24le_to_s16(uint8_t *p) |
128 | { | |
129 | return pcm_quantize_s32(pcm_s24le_to_s32(p)); | |
130 | } | |
01993d67 | 131 | static |
48e2f01c | 132 | inline int16_t pcm_s24be_to_s16(uint8_t *p) |
133 | { | |
134 | return pcm_quantize_s32(pcm_s24be_to_s32(p)); | |
135 | } | |
01993d67 | 136 | static |
48e2f01c | 137 | inline int16_t pcm_u24le_to_s16(uint8_t *p) |
138 | { | |
139 | return pcm_quantize_s32(pcm_u24le_to_s32(p)); | |
140 | } | |
01993d67 | 141 | static |
48e2f01c | 142 | inline int16_t pcm_u24be_to_s16(uint8_t *p) |
143 | { | |
144 | return pcm_quantize_s32(pcm_u24be_to_s32(p)); | |
145 | } | |
01993d67 | 146 | static |
48e2f01c | 147 | inline int16_t pcm_s32le_to_s16(int32_t n) |
148 | { | |
149 | return pcm_quantize_s32(m4af_ltoh32(n)); | |
150 | } | |
01993d67 | 151 | static |
48e2f01c | 152 | inline int16_t pcm_s32be_to_s16(int32_t n) |
153 | { | |
154 | return pcm_quantize_s32(m4af_btoh32(n)); | |
155 | } | |
01993d67 | 156 | static |
48e2f01c | 157 | inline int16_t pcm_u32le_to_s16(int32_t n) |
158 | { | |
159 | return pcm_quantize_s32(m4af_ltoh32(n) ^ 0x80000000); | |
160 | } | |
01993d67 | 161 | static |
48e2f01c | 162 | inline int16_t pcm_u32be_to_s16(int32_t n) |
163 | { | |
164 | return pcm_quantize_s32(m4af_btoh32(n) ^ 0x80000000); | |
165 | } | |
158dc13c | 166 | static |
48e2f01c | 167 | inline int16_t pcm_f32le_to_s16(int32_t n) |
168 | { | |
169 | return pcm_quantize_f64(pcm_i2f(m4af_ltoh32(n))); | |
170 | } | |
01993d67 | 171 | static |
48e2f01c | 172 | inline int16_t pcm_f32be_to_s16(int32_t n) |
173 | { | |
174 | return pcm_quantize_f64(pcm_i2f(m4af_btoh32(n))); | |
175 | } | |
01993d67 | 176 | static |
48e2f01c | 177 | inline int16_t pcm_f64le_to_s16(int64_t n) |
178 | { | |
179 | return pcm_quantize_f64(pcm_i2d(m4af_ltoh64(n))); | |
180 | } | |
01993d67 | 181 | static |
48e2f01c | 182 | inline int16_t pcm_f64be_to_s16(int64_t n) |
183 | { | |
184 | return pcm_quantize_f64(pcm_i2d(m4af_btoh64(n))); | |
185 | } | |
186 | ||
187 | int pcm_convert_to_native_sint16(const pcm_sample_description_t *format, | |
188 | const void *input, uint32_t nframes, | |
e8e9f79e | 189 | int16_t *result) |
48e2f01c | 190 | { |
191 | #define CONVERT(type, conv) \ | |
192 | do { \ | |
193 | unsigned i; \ | |
194 | type *ip = (type *)input; \ | |
195 | for (i = 0; i < count; ++i) { \ | |
e8e9f79e | 196 | result[i] = conv(ip[i]); \ |
48e2f01c | 197 | } \ |
198 | } while(0) | |
199 | ||
200 | #define CONVERT_BYTES(conv) \ | |
201 | do { \ | |
202 | unsigned i, bytes_per_channel; \ | |
203 | uint8_t *ip = (uint8_t *)input; \ | |
204 | bytes_per_channel = PCM_BYTES_PER_CHANNEL(format); \ | |
205 | for (i = 0; i < count; ++i) { \ | |
e8e9f79e | 206 | result[i] = conv(ip); \ |
48e2f01c | 207 | ip += bytes_per_channel; \ |
208 | } \ | |
209 | } while(0) | |
210 | ||
211 | uint32_t count = nframes * format->channels_per_frame; | |
212 | if (!count) | |
213 | return 0; | |
48e2f01c | 214 | switch (PCM_BYTES_PER_CHANNEL(format) | format->sample_type<<4) { |
215 | case 1 | PCM_TYPE_SINT<<4: | |
216 | CONVERT(int8_t, pcm_s8_to_s16); break; | |
217 | case 1 | PCM_TYPE_UINT<<4: | |
218 | CONVERT(uint8_t, pcm_u8_to_s16); break; | |
219 | case 2 | PCM_TYPE_SINT<<4: | |
220 | CONVERT(int16_t, pcm_s16le_to_s16); break; | |
221 | case 2 | PCM_TYPE_UINT<<4: | |
222 | CONVERT(uint16_t, pcm_u16le_to_s16); break; | |
223 | case 2 | PCM_TYPE_SINT_BE<<4: | |
224 | CONVERT(int16_t, pcm_s16be_to_s16); break; | |
225 | case 2 | PCM_TYPE_UINT_BE<<4: | |
226 | CONVERT(int16_t, pcm_u16be_to_s16); break; | |
227 | case 3 | PCM_TYPE_SINT<<4: | |
228 | CONVERT_BYTES(pcm_s24le_to_s16); break; | |
229 | case 3 | PCM_TYPE_UINT<<4: | |
230 | CONVERT_BYTES(pcm_u24le_to_s16); break; | |
231 | case 3 | PCM_TYPE_SINT_BE<<4: | |
232 | CONVERT_BYTES(pcm_s24be_to_s16); break; | |
233 | case 3 | PCM_TYPE_UINT_BE<<4: | |
234 | CONVERT_BYTES(pcm_u24be_to_s16); break; | |
235 | case 4 | PCM_TYPE_SINT<<4: | |
236 | CONVERT(int32_t, pcm_s32le_to_s16); break; | |
237 | case 4 | PCM_TYPE_UINT<<4: | |
238 | CONVERT(uint32_t, pcm_u32le_to_s16); break; | |
239 | case 4 | PCM_TYPE_FLOAT<<4: | |
240 | CONVERT(int32_t, pcm_f32le_to_s16); break; | |
241 | case 4 | PCM_TYPE_SINT_BE<<4: | |
242 | CONVERT(int32_t, pcm_s32be_to_s16); break; | |
243 | case 4 | PCM_TYPE_UINT_BE<<4: | |
244 | CONVERT(uint32_t, pcm_u32be_to_s16); break; | |
245 | case 4 | PCM_TYPE_FLOAT_BE<<4: | |
246 | CONVERT(int32_t, pcm_f32be_to_s16); break; | |
247 | case 8 | PCM_TYPE_FLOAT<<4: | |
248 | CONVERT(int64_t, pcm_f64le_to_s16); break; | |
249 | case 8 | PCM_TYPE_FLOAT_BE<<4: | |
250 | CONVERT(int64_t, pcm_f64be_to_s16); break; | |
251 | default: | |
252 | return -1; | |
253 | } | |
254 | return 0; | |
255 | } |