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
|
(*
* 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 50.43.0
*
*)
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_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;
(**
* 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;
(**
* 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 plane'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 samples
* plane, that is linesize[i] will contain the linesize of the plane i,
* and will be zero for all the unused planes. All linesize values are
* equal.
*
* @param pointers array to be filled with the pointer for each plane, may be NULL
* @param linesizes array to be filled with the linesize, may be NULL
* @param buf the pointer to a buffer containing the samples
* @param nb_samples the number of samples in a single channel
* @param planar 1 if the samples layout is planar, 0 if it is packed
* @param nb_channels the number of channels
* @return the total size of the buffer, a negative
* error code in case of failure
*)
function av_samples_fill_arrays(pointers: OctArrayOfPcuint8; linesizes: OctArrayOfcint;
buf: Pcuint8; nb_channels: cint; nb_samples: cint;
sample_fmt: TAVSampleFormat; planar: cint; align: cint): cint;
cdecl; external av__util;
(**
* Allocate a samples buffer for nb_samples samples, and
* fill pointers and linesizes accordingly.
* The allocated samples buffer has to be freed by using
* av_freep(&pointers[0]).
*
* @param nb_channels number of audio channels
* @param nb_samples number of samples per channel
* @param planar 1 if the samples layout is planar, 0 if packed,
* @param align the value to use for buffer size alignment
* @return the size in bytes required for the samples buffer, a negative
* error code in case of failure
* @see av_samples_fill_arrays()
*)
function av_samples_alloc(pointers: OctArrayOfPcuint8; linesizes: OctArrayOfcint;
nb_channels: cint; nb_samples: cint;
sample_fmt: TAVSampleFormat; planar: cint;
align: cint): cint;
cdecl; external av__util;
|
