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3719602c PC |
1 | /* Copyright (C) 2010-2020 The RetroArch team |
2 | * | |
3 | * --------------------------------------------------------------------------------------- | |
4 | * The following license statement only applies to this file (audio_mix.h). | |
5 | * --------------------------------------------------------------------------------------- | |
6 | * | |
7 | * Permission is hereby granted, free of charge, | |
8 | * to any person obtaining a copy of this software and associated documentation files (the "Software"), | |
9 | * to deal in the Software without restriction, including without limitation the rights to | |
10 | * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, | |
11 | * and to permit persons to whom the Software is furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, | |
16 | * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | |
18 | * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, | |
19 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
21 | */ | |
22 | ||
23 | #ifndef __LIBRETRO_SDK_AUDIO_MIX_H__ | |
24 | #define __LIBRETRO_SDK_AUDIO_MIX_H__ | |
25 | ||
26 | #include <retro_common_api.h> | |
27 | ||
28 | #include <stdint.h> | |
29 | #include <stddef.h> | |
30 | #ifdef _WIN32 | |
31 | #include <direct.h> | |
32 | #else | |
33 | #include <unistd.h> | |
34 | #endif | |
35 | ||
36 | #include <formats/rwav.h> | |
37 | #include <audio/audio_resampler.h> | |
38 | ||
39 | RETRO_BEGIN_DECLS | |
40 | ||
41 | typedef struct | |
42 | { | |
43 | double ratio; | |
44 | void *buf; | |
45 | int16_t *upsample_buf; | |
46 | float *float_buf; | |
47 | float *float_resample_buf; | |
48 | int16_t *resample_buf; | |
49 | const retro_resampler_t *resampler; | |
50 | void *resampler_data; | |
51 | rwav_t *rwav; | |
52 | ssize_t len; | |
53 | size_t resample_len; | |
54 | int sample_rate; | |
55 | bool resample; | |
56 | } audio_chunk_t; | |
57 | ||
58 | #if defined(__SSE2__) | |
59 | #define audio_mix_volume audio_mix_volume_SSE2 | |
60 | ||
61 | void audio_mix_volume_SSE2(float *out, | |
62 | const float *in, float vol, size_t samples); | |
63 | #else | |
64 | #define audio_mix_volume audio_mix_volume_C | |
65 | #endif | |
66 | ||
67 | void audio_mix_volume_C(float *dst, const float *src, float vol, size_t samples); | |
68 | ||
69 | void audio_mix_free_chunk(audio_chunk_t *chunk); | |
70 | ||
71 | audio_chunk_t* audio_mix_load_wav_file(const char *path, int sample_rate, | |
72 | const char *resampler_ident, enum resampler_quality quality); | |
73 | ||
74 | size_t audio_mix_get_chunk_num_samples(audio_chunk_t *chunk); | |
75 | ||
76 | /** | |
77 | * audio_mix_get_chunk_sample: | |
78 | * @chunk : audio chunk instance | |
79 | * @channel : channel of the sample (0=left, 1=right) | |
80 | * @index : index of the sample | |
81 | * | |
82 | * Get a sample from an audio chunk. | |
83 | * | |
84 | * Returns: A signed 16-bit audio sample, (if necessary) resampled into the desired output rate. | |
85 | **/ | |
86 | int16_t audio_mix_get_chunk_sample(audio_chunk_t *chunk, unsigned channel, size_t sample); | |
87 | ||
88 | int16_t* audio_mix_get_chunk_samples(audio_chunk_t *chunk); | |
89 | ||
90 | int audio_mix_get_chunk_num_channels(audio_chunk_t *chunk); | |
91 | ||
92 | RETRO_END_DECLS | |
93 | ||
94 | #endif |