author | Wuzzy <Wuzzy2@mail.ru> |
Sat, 07 Jul 2018 18:41:28 +0200 | |
changeset 13453 | 6aca4f45ab0a |
parent 7813 | 7ac83d79b897 |
permissions | -rw-r--r-- |
7813
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
1 |
/* |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
2 |
* Audio FIFO |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
3 |
* Copyright (c) 2012 Justin Ruggles <justin.ruggles@gmail.com> |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
4 |
* |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
5 |
* This file is part of Libav. |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
6 |
* |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
7 |
* Libav is free software; you can redistribute it and/or |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
8 |
* modify it under the terms of the GNU Lesser General Public |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
9 |
* License as published by the Free Software Foundation; either |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
10 |
* version 2.1 of the License, or (at your option) any later version. |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
11 |
* |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
12 |
* Libav is distributed in the hope that it will be useful, |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
13 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
14 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
15 |
* Lesser General Public License for more details. |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
16 |
* |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
17 |
* You should have received a copy of the GNU Lesser General Public |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
18 |
* License along with Libav; if not, write to the Free Software |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
19 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
20 |
*/ |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
21 |
|
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
22 |
/** |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
23 |
* @file |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
24 |
* Audio FIFO Buffer |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
25 |
*/ |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
26 |
|
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
27 |
#ifndef AVUTIL_AUDIO_FIFO_H |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
28 |
#define AVUTIL_AUDIO_FIFO_H |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
29 |
|
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
30 |
#include "avutil.h" |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
31 |
#include "fifo.h" |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
32 |
#include "samplefmt.h" |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
33 |
|
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
34 |
/** |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
35 |
* @addtogroup lavu_audio |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
36 |
* @{ |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
37 |
*/ |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
38 |
|
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
39 |
/** |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
40 |
* Context for an Audio FIFO Buffer. |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
41 |
* |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
42 |
* - Operates at the sample level rather than the byte level. |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
43 |
* - Supports multiple channels with either planar or packed sample format. |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
44 |
* - Automatic reallocation when writing to a full buffer. |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
45 |
*/ |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
46 |
typedef struct AVAudioFifo AVAudioFifo; |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
47 |
|
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
48 |
/** |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
49 |
* Free an AVAudioFifo. |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
50 |
* |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
51 |
* @param af AVAudioFifo to free |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
52 |
*/ |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
53 |
void av_audio_fifo_free(AVAudioFifo *af); |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
54 |
|
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
55 |
/** |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
56 |
* Allocate an AVAudioFifo. |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
57 |
* |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
58 |
* @param sample_fmt sample format |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
59 |
* @param channels number of channels |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
60 |
* @param nb_samples initial allocation size, in samples |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
61 |
* @return newly allocated AVAudioFifo, or NULL on error |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
62 |
*/ |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
63 |
AVAudioFifo *av_audio_fifo_alloc(enum AVSampleFormat sample_fmt, int channels, |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
64 |
int nb_samples); |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
65 |
|
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
66 |
/** |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
67 |
* Reallocate an AVAudioFifo. |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
68 |
* |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
69 |
* @param af AVAudioFifo to reallocate |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
70 |
* @param nb_samples new allocation size, in samples |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
71 |
* @return 0 if OK, or negative AVERROR code on failure |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
72 |
*/ |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
73 |
int av_audio_fifo_realloc(AVAudioFifo *af, int nb_samples); |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
74 |
|
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
75 |
/** |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
76 |
* Write data to an AVAudioFifo. |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
77 |
* |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
78 |
* The AVAudioFifo will be reallocated automatically if the available space |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
79 |
* is less than nb_samples. |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
80 |
* |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
81 |
* @see enum AVSampleFormat |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
82 |
* The documentation for AVSampleFormat describes the data layout. |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
83 |
* |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
84 |
* @param af AVAudioFifo to write to |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
85 |
* @param data audio data plane pointers |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
86 |
* @param nb_samples number of samples to write |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
87 |
* @return number of samples actually written, or negative AVERROR |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
88 |
* code on failure. |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
89 |
*/ |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
90 |
int av_audio_fifo_write(AVAudioFifo *af, void **data, int nb_samples); |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
91 |
|
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
92 |
/** |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
93 |
* Read data from an AVAudioFifo. |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
94 |
* |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
95 |
* @see enum AVSampleFormat |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
96 |
* The documentation for AVSampleFormat describes the data layout. |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
97 |
* |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
98 |
* @param af AVAudioFifo to read from |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
99 |
* @param data audio data plane pointers |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
100 |
* @param nb_samples number of samples to read |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
101 |
* @return number of samples actually read, or negative AVERROR code |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
102 |
* on failure. |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
103 |
*/ |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
104 |
int av_audio_fifo_read(AVAudioFifo *af, void **data, int nb_samples); |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
105 |
|
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
106 |
/** |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
107 |
* Drain data from an AVAudioFifo. |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
108 |
* |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
109 |
* Removes the data without reading it. |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
110 |
* |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
111 |
* @param af AVAudioFifo to drain |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
112 |
* @param nb_samples number of samples to drain |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
113 |
* @return 0 if OK, or negative AVERROR code on failure |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
114 |
*/ |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
115 |
int av_audio_fifo_drain(AVAudioFifo *af, int nb_samples); |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
116 |
|
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
117 |
/** |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
118 |
* Reset the AVAudioFifo buffer. |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
119 |
* |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
120 |
* This empties all data in the buffer. |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
121 |
* |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
122 |
* @param af AVAudioFifo to reset |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
123 |
*/ |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
124 |
void av_audio_fifo_reset(AVAudioFifo *af); |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
125 |
|
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
126 |
/** |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
127 |
* Get the current number of samples in the AVAudioFifo available for reading. |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
128 |
* |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
129 |
* @param af the AVAudioFifo to query |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
130 |
* @return number of samples available for reading |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
131 |
*/ |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
132 |
int av_audio_fifo_size(AVAudioFifo *af); |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
133 |
|
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
134 |
/** |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
135 |
* Get the current number of samples in the AVAudioFifo available for writing. |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
136 |
* |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
137 |
* @param af the AVAudioFifo to query |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
138 |
* @return number of samples available for writing |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
139 |
*/ |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
140 |
int av_audio_fifo_space(AVAudioFifo *af); |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
141 |
|
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
142 |
/** |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
143 |
* @} |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
144 |
*/ |
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
145 |
|
7ac83d79b897
support video recording on windows with automation and headers
koda
parents:
diff
changeset
|
146 |
#endif /* AVUTIL_AUDIO_FIFO_H */ |