#include <os/OsIntTypes.h>#include <stdlib.h>#include <os/OsDefs.h>#include <os/OsStatus.h>#include <os/OsFS.h>#include <mp/MpTypes.h>#include <mp/MpAudioUtils.h>#include <mp/MpDspUtils.h>#include <mp/StreamHttpDataSource.h>#include <mp/MpAudioWaveFileRead.h>#include <os/fstream>
Include dependency graph for MpAudioUtils.cpp:
Macros | |
| #define | MAX_WAVBUF_SIZE 65535 |
Functions | |
| void | ConvertUnsigned8ToSigned16 (unsigned char *in_buffer, MpAudioSample *out_buffer, int numBytesToConvert) |
| int | gcd (int a, int b) |
| Returns the GCD of a and b. More... | |
| int | reSample (char *charBuffer, int Size, int CurrentSampleRate, int NewSampleRate) |
| Downsamples from current rate to new rate. Doesn't upsample yet. More... | |
| int | mergeChannels (char *charBuffer, int Size, int nTotalChannels) |
| Merges two or more channels into one. More... | |
| OsStatus | WriteWaveHdr (OsFile &file) |
| OsStatus | updateWaveHeaderLengths (OsFile &file) |
| OsStatus | mergeWaveUrls (UtlString rSourceUrls[], UtlString &rDestFile) |
| Works with 16bit wavs only. (for now) More... | |
| OsStatus | mergeWaveFiles (UtlString rSourceFiles[], UtlString &rDestFile) |
| Works with 16bit wavs only. (for now) More... | |
| void | InitG711Tables () |
| size_t | DecompressG711MuLaw (MpAudioSample *buffer, size_t length) |
| unsigned char | MuLawEncode2 (MpAudioSample s) |
| MpAudioSample | MuLawDecode2 (unsigned char ulaw) |
| size_t | DecompressG711ALaw (MpAudioSample *buffer, size_t length) |
| unsigned char | ALawEncode2 (MpAudioSample s) |
| MpAudioSample | ALawDecode2 (unsigned char alaw) |
Macro Definition Documentation
| #define MAX_WAVBUF_SIZE 65535 |
Function Documentation
| void ConvertUnsigned8ToSigned16 | ( | unsigned char * | in_buffer, |
| MpAudioSample * | out_buffer, | ||
| int | numBytesToConvert | ||
| ) |
| int gcd | ( | int | a, |
| int | b | ||
| ) |
Returns the GCD of a and b.
Don't pass it negative numbers or (0, 0)
| int reSample | ( | char * | charBuffer, |
| int | Size, | ||
| int | CurrentSampleRate, | ||
| int | NewSampleRate | ||
| ) |
Downsamples from current rate to new rate. Doesn't upsample yet.
| int mergeChannels | ( | char * | charBuffer, |
| int | Size, | ||
| int | nTotalChannels | ||
| ) |
Merges two or more channels into one.
Takes size in bytes as input. Returns new size in bytes
| OsStatus WriteWaveHdr | ( | OsFile & | file | ) |
| OsStatus updateWaveHeaderLengths | ( | OsFile & | file | ) |
| OsStatus mergeWaveUrls | ( | UtlString | rSourceUrls[], |
| UtlString & | rDestFile | ||
| ) |
Works with 16bit wavs only. (for now)
| OsStatus mergeWaveFiles | ( | UtlString | rSourceFiles[], |
| UtlString & | rDestFile | ||
| ) |
Works with 16bit wavs only. (for now)
| void InitG711Tables | ( | ) |
| size_t DecompressG711MuLaw | ( | MpAudioSample * | buffer, |
| size_t | length | ||
| ) |
| unsigned char MuLawEncode2 | ( | MpAudioSample | s | ) |
| MpAudioSample MuLawDecode2 | ( | unsigned char | ulaw | ) |
| size_t DecompressG711ALaw | ( | MpAudioSample * | buffer, |
| size_t | length | ||
| ) |
| unsigned char ALawEncode2 | ( | MpAudioSample | s | ) |
| MpAudioSample ALawDecode2 | ( | unsigned char | alaw | ) |
