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 | |
16 | #ifdef _MSC_VER |
17 | # define inline __inline |
18 | # ifdef _M_IX86 |
19 | inline int lrint(double x) |
20 | { |
21 | int n; |
22 | _asm { |
23 | fld x |
24 | fistp n |
25 | } |
26 | return n; |
27 | } |
28 | # else |
29 | # include <emmintrin.h> |
30 | inline int lrint(double x) |
31 | { |
32 | return _mm_cvtsd_si32(_mm_load_sd(&x)); |
33 | } |
34 | # endif |
35 | #endif |
36 | |
01993d67 |
37 | static |
6da14aae |
38 | inline double pcm_clip(double n, double min_value, double max_value) |
48e2f01c |
39 | { |
40 | if (n < min_value) |
41 | return min_value; |
42 | else if (n > max_value) |
43 | return max_value; |
44 | return n; |
45 | } |
01993d67 |
46 | static |
48e2f01c |
47 | inline float pcm_i2f(int32_t n) |
48 | { |
49 | union { |
50 | int32_t ivalue; |
51 | float fvalue; |
52 | } u; |
53 | u.ivalue = n; |
54 | return u.fvalue; |
55 | } |
01993d67 |
56 | static |
48e2f01c |
57 | inline double pcm_i2d(int64_t n) |
58 | { |
59 | union { |
60 | int64_t ivalue; |
61 | double fvalue; |
62 | } u; |
63 | u.ivalue = n; |
64 | return u.fvalue; |
65 | } |
01993d67 |
66 | static |
48e2f01c |
67 | inline int16_t pcm_quantize_s32(int32_t n) |
68 | { |
69 | n = ((n >> 15) + 1) >> 1; |
70 | return (n == 0x8000) ? 0x7fff : n; |
71 | } |
01993d67 |
72 | static |
48e2f01c |
73 | inline int16_t pcm_quantize_f64(double v) |
74 | { |
6da14aae |
75 | return (int16_t)lrint(pcm_clip(v * 32768.0, -32768.0, 32767.0)); |
48e2f01c |
76 | } |
01993d67 |
77 | static |
48e2f01c |
78 | inline int16_t pcm_s8_to_s16(int8_t n) |
79 | { |
80 | return n << 8; |
81 | } |
01993d67 |
82 | static |
48e2f01c |
83 | inline int16_t pcm_u8_to_s16(uint8_t n) |
84 | { |
85 | return (n << 8) ^ 0x8000; |
86 | } |
01993d67 |
87 | static |
48e2f01c |
88 | inline int16_t pcm_s16le_to_s16(int16_t n) |
89 | { |
90 | return m4af_ltoh16(n); |
91 | } |
01993d67 |
92 | static |
48e2f01c |
93 | inline int16_t pcm_s16be_to_s16(int16_t n) |
94 | { |
95 | return m4af_btoh16(n); |
96 | } |
01993d67 |
97 | static |
48e2f01c |
98 | inline int16_t pcm_u16le_to_s16(uint16_t n) |
99 | { |
100 | return m4af_ltoh16(n) ^ 0x8000; |
101 | } |
01993d67 |
102 | static |
48e2f01c |
103 | inline int16_t pcm_u16be_to_s16(uint16_t n) |
104 | { |
105 | return m4af_btoh16(n) ^ 0x8000; |
106 | } |
01993d67 |
107 | static |
48e2f01c |
108 | inline int32_t pcm_s24le_to_s32(uint8_t *p) |
109 | { |
110 | return p[0]<<8 | p[1]<<16 | p[2]<<24; |
111 | } |
01993d67 |
112 | static |
48e2f01c |
113 | inline int32_t pcm_s24be_to_s32(uint8_t *p) |
114 | { |
115 | return p[0]<<24 | p[1]<<16 | p[2]<<8; |
116 | } |
01993d67 |
117 | static |
48e2f01c |
118 | inline int32_t pcm_u24le_to_s32(uint8_t *p) |
119 | { |
120 | return pcm_s24le_to_s32(p) ^ 0x80000000; |
121 | } |
01993d67 |
122 | static |
48e2f01c |
123 | inline int32_t pcm_u24be_to_s32(uint8_t *p) |
124 | { |
125 | return pcm_s24be_to_s32(p) ^ 0x80000000; |
126 | } |
01993d67 |
127 | static |
48e2f01c |
128 | inline int16_t pcm_s24le_to_s16(uint8_t *p) |
129 | { |
130 | return pcm_quantize_s32(pcm_s24le_to_s32(p)); |
131 | } |
01993d67 |
132 | static |
48e2f01c |
133 | inline int16_t pcm_s24be_to_s16(uint8_t *p) |
134 | { |
135 | return pcm_quantize_s32(pcm_s24be_to_s32(p)); |
136 | } |
01993d67 |
137 | static |
48e2f01c |
138 | inline int16_t pcm_u24le_to_s16(uint8_t *p) |
139 | { |
140 | return pcm_quantize_s32(pcm_u24le_to_s32(p)); |
141 | } |
01993d67 |
142 | static |
48e2f01c |
143 | inline int16_t pcm_u24be_to_s16(uint8_t *p) |
144 | { |
145 | return pcm_quantize_s32(pcm_u24be_to_s32(p)); |
146 | } |
01993d67 |
147 | static |
48e2f01c |
148 | inline int16_t pcm_s32le_to_s16(int32_t n) |
149 | { |
150 | return pcm_quantize_s32(m4af_ltoh32(n)); |
151 | } |
01993d67 |
152 | static |
48e2f01c |
153 | inline int16_t pcm_s32be_to_s16(int32_t n) |
154 | { |
155 | return pcm_quantize_s32(m4af_btoh32(n)); |
156 | } |
01993d67 |
157 | static |
48e2f01c |
158 | inline int16_t pcm_u32le_to_s16(int32_t n) |
159 | { |
160 | return pcm_quantize_s32(m4af_ltoh32(n) ^ 0x80000000); |
161 | } |
01993d67 |
162 | static |
48e2f01c |
163 | inline int16_t pcm_u32be_to_s16(int32_t n) |
164 | { |
165 | return pcm_quantize_s32(m4af_btoh32(n) ^ 0x80000000); |
166 | } |
158dc13c |
167 | static |
48e2f01c |
168 | inline int16_t pcm_f32le_to_s16(int32_t n) |
169 | { |
170 | return pcm_quantize_f64(pcm_i2f(m4af_ltoh32(n))); |
171 | } |
01993d67 |
172 | static |
48e2f01c |
173 | inline int16_t pcm_f32be_to_s16(int32_t n) |
174 | { |
175 | return pcm_quantize_f64(pcm_i2f(m4af_btoh32(n))); |
176 | } |
01993d67 |
177 | static |
48e2f01c |
178 | inline int16_t pcm_f64le_to_s16(int64_t n) |
179 | { |
180 | return pcm_quantize_f64(pcm_i2d(m4af_ltoh64(n))); |
181 | } |
01993d67 |
182 | static |
48e2f01c |
183 | inline int16_t pcm_f64be_to_s16(int64_t n) |
184 | { |
185 | return pcm_quantize_f64(pcm_i2d(m4af_btoh64(n))); |
186 | } |
187 | |
188 | int pcm_convert_to_native_sint16(const pcm_sample_description_t *format, |
189 | const void *input, uint32_t nframes, |
190 | int16_t **result, uint32_t *osize) |
191 | { |
192 | #define CONVERT(type, conv) \ |
193 | do { \ |
194 | unsigned i; \ |
195 | type *ip = (type *)input; \ |
196 | for (i = 0; i < count; ++i) { \ |
197 | (*result)[i] = conv(ip[i]); \ |
198 | } \ |
199 | } while(0) |
200 | |
201 | #define CONVERT_BYTES(conv) \ |
202 | do { \ |
203 | unsigned i, bytes_per_channel; \ |
204 | uint8_t *ip = (uint8_t *)input; \ |
205 | bytes_per_channel = PCM_BYTES_PER_CHANNEL(format); \ |
206 | for (i = 0; i < count; ++i) { \ |
207 | (*result)[i] = conv(ip); \ |
208 | ip += bytes_per_channel; \ |
209 | } \ |
210 | } while(0) |
211 | |
212 | uint32_t count = nframes * format->channels_per_frame; |
213 | if (!count) |
214 | return 0; |
215 | if (!*result || *osize < count) { |
216 | *osize = count; |
217 | *result = realloc(*result, count * sizeof(int16_t)); |
218 | } |
219 | |
220 | switch (PCM_BYTES_PER_CHANNEL(format) | format->sample_type<<4) { |
221 | case 1 | PCM_TYPE_SINT<<4: |
222 | CONVERT(int8_t, pcm_s8_to_s16); break; |
223 | case 1 | PCM_TYPE_UINT<<4: |
224 | CONVERT(uint8_t, pcm_u8_to_s16); break; |
225 | case 2 | PCM_TYPE_SINT<<4: |
226 | CONVERT(int16_t, pcm_s16le_to_s16); break; |
227 | case 2 | PCM_TYPE_UINT<<4: |
228 | CONVERT(uint16_t, pcm_u16le_to_s16); break; |
229 | case 2 | PCM_TYPE_SINT_BE<<4: |
230 | CONVERT(int16_t, pcm_s16be_to_s16); break; |
231 | case 2 | PCM_TYPE_UINT_BE<<4: |
232 | CONVERT(int16_t, pcm_u16be_to_s16); break; |
233 | case 3 | PCM_TYPE_SINT<<4: |
234 | CONVERT_BYTES(pcm_s24le_to_s16); break; |
235 | case 3 | PCM_TYPE_UINT<<4: |
236 | CONVERT_BYTES(pcm_u24le_to_s16); break; |
237 | case 3 | PCM_TYPE_SINT_BE<<4: |
238 | CONVERT_BYTES(pcm_s24be_to_s16); break; |
239 | case 3 | PCM_TYPE_UINT_BE<<4: |
240 | CONVERT_BYTES(pcm_u24be_to_s16); break; |
241 | case 4 | PCM_TYPE_SINT<<4: |
242 | CONVERT(int32_t, pcm_s32le_to_s16); break; |
243 | case 4 | PCM_TYPE_UINT<<4: |
244 | CONVERT(uint32_t, pcm_u32le_to_s16); break; |
245 | case 4 | PCM_TYPE_FLOAT<<4: |
246 | CONVERT(int32_t, pcm_f32le_to_s16); break; |
247 | case 4 | PCM_TYPE_SINT_BE<<4: |
248 | CONVERT(int32_t, pcm_s32be_to_s16); break; |
249 | case 4 | PCM_TYPE_UINT_BE<<4: |
250 | CONVERT(uint32_t, pcm_u32be_to_s16); break; |
251 | case 4 | PCM_TYPE_FLOAT_BE<<4: |
252 | CONVERT(int32_t, pcm_f32be_to_s16); break; |
253 | case 8 | PCM_TYPE_FLOAT<<4: |
254 | CONVERT(int64_t, pcm_f64le_to_s16); break; |
255 | case 8 | PCM_TYPE_FLOAT_BE<<4: |
256 | CONVERT(int64_t, pcm_f64be_to_s16); break; |
257 | default: |
258 | return -1; |
259 | } |
260 | return 0; |
261 | } |