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
|
#ifndef AVIFILE_AUDIOENCODER_H
#define AVIFILE_AUDIOENCODER_H
/********************************************************
*
* Audio encoder interface.
*
********************************************************/
#include "infotypes.h"
AVM_BEGIN_NAMESPACE;
/**
*
* \warning
* As of 1/15/2001, the only supported format is MPEG layer-3
* ( using Lame encoder v. 3.70 ), format id 0x55. Arguments passed
* to Create() are not checked for correctness. Only 16-bit input
* is supported.
*
*/
class AVMEXPORT IAudioEncoder
{
public:
IAudioEncoder(const CodecInfo& info);
virtual ~IAudioEncoder();
/**
* Finishes conversion. May write some more data
* ( pass buffer of >10kb size here ).
*/
virtual int Close(void* out_data, size_t out_size, size_t* size_written) = 0;
/**
* Encodes data. Parameters in_size and size_read are measured
* in samples ( not in bytes ).
*/
virtual int Convert(const void* in_data, size_t in_size,
void* out_data, size_t out_size,
size_t* size_read, size_t* size_written) = 0;
virtual const CodecInfo& GetCodecInfo() const;
/// Reads the format structure. (format == 0 -> query for size)
virtual size_t GetFormat(void* format = 0, size_t size = 0) const = 0;
/// Starts conversion.
virtual int Start() = 0;
/// USE ATTRIBUTES as for video - we want to support a lot of various parameters
/// Sets bitrate in bytes/second.
virtual int SetBitrate(int bitrate);
/// Sets encoding quality ( 1..10 ).
virtual int SetQuality(int quality);
/// Sets more extra options
//virtual int Set(int option, int param) { return -1; }
/// Queries for the size of structure describing destination format.
/// \obsolete - just source backward compatible
size_t GetFormatSize() const { return GetFormat(0, 0); }
protected:
const CodecInfo& m_Info;
};
AVM_END_NAMESPACE;
#endif // AVIFILE_AUDIOENCODER_H
|
