1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
(*
* SampleFormat
* copyright (c) 2011 Karl-Michael Schindler <karl-michael.schindler@web.de>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* This is a part of the Pascal port of ffmpeg.
*
* Conversion of libavutil/samplefmt.h
* avutil version 51.34.101
*
*)
type
(**
* all in native-endian format
*)
TAVSampleFormat = (
AV_SAMPLE_FMT_NONE = -1,
AV_SAMPLE_FMT_U8, ///< unsigned 8 bits
AV_SAMPLE_FMT_S16, ///< signed 16 bits
AV_SAMPLE_FMT_S32, ///< signed 32 bits
AV_SAMPLE_FMT_FLT, ///< float
AV_SAMPLE_FMT_DBL, ///< double
AV_SAMPLE_FMT_U8P, ///< unsigned 8 bits, planar
AV_SAMPLE_FMT_S16P, ///< signed 16 bits, planar
AV_SAMPLE_FMT_S32P, ///< signed 32 bits, planar
AV_SAMPLE_FMT_FLTP, ///< float, planar
AV_SAMPLE_FMT_DBLP, ///< double, planar
AV_SAMPLE_FMT_NB ///< Number of sample formats. DO NOT USE if linking dynamically
);
TAVSampleFormatArray = array [0 .. MaxInt div SizeOf(TAVSampleFormat) - 1] of TAVSampleFormat;
PAVSampleFormatArray = ^TAVSampleFormatArray;
(**
* Return the name of sample_fmt, or NULL if sample_fmt is not
* recognized.
*)
function av_get_sample_fmt_name(sample_fmt: TAVSampleFormat): {const} PAnsiChar;
cdecl; external av__util;
(**
* Return a sample format corresponding to name, or AV_SAMPLE_FMT_NONE
* on error.
*)
function av_get_sample_fmt(name: {const} PAnsiChar): TAVSampleFormat;
cdecl; external av__util;
(**
* Return the planar<->packed alternative form of the given sample format, or
* AV_SAMPLE_FMT_NONE on error. If the passed sample_fmt is already in the
* requested planar/packed format, the format returned is the same as the
* input.
*)
function av_get_alt_sample_fmt(sample_fmt: TAVSampleFormat; planar: cint): TAVSampleFormat;
cdecl; external av__util;
(**
* Generate a string corresponding to the sample format with
* sample_fmt, or a header if sample_fmt is negative.
*
* @param buf the buffer where to write the string
* @param buf_size the size of buf
* @param sample_fmt the number of the sample format to print the
* corresponding info string, or a negative value to print the
* corresponding header.
* @return the pointer to the filled buffer or NULL if sample_fmt is
* unknown or in case of other errors
*)
function av_get_sample_fmt_string(buf: PAnsiChar; buf_size: cint; sample_fmt: TAVSampleFormat): PAnsiChar;
cdecl; external av__util;
{$IFDEF FF_API_GET_BITS_PER_SAMPLE_FMT}
(**
* @deprecated Use av_get_bytes_per_sample() instead.
*)
function av_get_bits_per_sample_fmt(sample_fmt: TAVSampleFormat): cint; deprecated;
cdecl; external av__util;
{$ENDIF}
(**
* Return number of bytes per sample.
*
* @param sample_fmt the sample format
* @return number of bytes per sample or zero if unknown for the given
* sample format
*)
function av_get_bytes_per_sample(sample_fmt: TAVSampleFormat): cint;
cdecl; external av__util;
type
OctArrayOfPcuint8 = array[0..7] of Pcuint8;
OctArrayOfcint = array[0..7] of cint;
(**
* Check if the sample format is planar.
*
* @param sample_fmt the sample format to inspect
* @return 1 if the sample format is planar, 0 if it is interleaved
*)
function av_sample_fmt_is_planar(sample_fmt: TAVSampleFormat): cint;
cdecl; external av__util;
(**
* Get the required buffer size for the given audio parameters.
*
* @param[out] linesize calculated linesize, may be NULL
* @param nb_channels the number of channels
* @param nb_samples the number of samples in a single channel
* @param sample_fmt the sample format
* @return required buffer size, or negative error code on failure
*)
function av_samples_get_buffer_size(linesize: Pcint; nb_channels: cint; nb_samples: cint;
sample_fmt: TAVSampleFormat; align: cint): cint;
cdecl; external av__util;
(**
* Fill channel data pointers and linesizes for samples with sample
* format sample_fmt.
*
* The pointers array is filled with the pointers to the samples data:
* for planar, set the start point of each channel's data within the buffer,
* for packed, set the start point of the entire buffer only.
*
* The linesize array is filled with the aligned size of each channel's data
* buffer for planar layout, or the aligned size of the buffer for all channels
* for packed layout.
*
* @param[out] audio_data array to be filled with the pointer for each channel
* @param[out] linesize calculated linesize
* @param buf the pointer to a buffer containing the samples
* @param nb_channels the number of channels
* @param nb_samples the number of samples in a single channel
* @param sample_fmt the sample format
* @param align buffer size alignment (1 = no alignment required)
* @return 0 on success or a negative error code on failure
*)
function av_samples_fill_arrays(audio_data: pointer; linesize: Pcint;
buf: Pcuint8; nb_channels: cint; nb_samples: cint;
sample_fmt: TAVSampleFormat; align: cint): cint;
cdecl; external av__util;
(**
* Allocate a samples buffer for nb_samples samples, and fill data pointers and
* linesize accordingly.
* The allocated samples buffer can be freed by using av_freep(&audio_data[0])
*
* @param[out] audio_data array to be filled with the pointer for each channel
* @param[out] linesize aligned size for audio buffer(s)
* @param nb_channels number of audio channels
* @param nb_samples number of samples per channel
* @param align buffer size alignment (1 = no alignment required)
* @return 0 on success or a negative error code on failure
* @see av_samples_fill_arrays()
*)
function av_samples_alloc(audio_data: pointer; linesize: Pcint;
nb_channels: cint; nb_samples: cint;
sample_fmt: TAVSampleFormat; align: cint): cint;
cdecl; external av__util;
|
