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#ifndef BUFFER_H
#define BUFFER_H
#include <inttypes.h>
#include <qobject.h>
#include <qlistbox.h>
#include "sound.h"
/* ---------------------------------------------------------------------- */
/* *.wav I/O stolen from cdda2wav */
/* Copyright (C) by Heiko Eissfeldt */
typedef uint8_t BYTE;
typedef uint16_t WORD;
typedef uint32_t DWORD;
typedef uint32_t FOURCC; /* a four character code */
/* flags for 'wFormatTag' field of WAVEFORMAT */
#define WAVE_FORMAT_PCM 1
/* MMIO macros */
#define mmioFOURCC(ch0, ch1, ch2, ch3) \
((DWORD)(BYTE)(ch0) | ((DWORD)(BYTE)(ch1) << 8) | \
((DWORD)(BYTE)(ch2) << 16) | ((DWORD)(BYTE)(ch3) << 24))
#define FOURCC_RIFF mmioFOURCC ('R', 'I', 'F', 'F')
#define FOURCC_LIST mmioFOURCC ('L', 'I', 'S', 'T')
#define FOURCC_WAVE mmioFOURCC ('W', 'A', 'V', 'E')
#define FOURCC_FMT mmioFOURCC ('f', 'm', 't', ' ')
#define FOURCC_DATA mmioFOURCC ('d', 'a', 't', 'a')
typedef struct CHUNKHDR {
FOURCC ckid; /* chunk ID */
DWORD dwSize; /* chunk size */
} CHUNKHDR;
/* simplified Header for standard WAV files */
typedef struct WAVEHDR {
CHUNKHDR chkRiff;
FOURCC fccWave;
CHUNKHDR chkFmt;
WORD wFormatTag; /* format type */
WORD nChannels; /* number of channels (i.e. mono, stereo, etc.) */
DWORD nSamplesPerSec; /* sample rate */
DWORD nAvgBytesPerSec; /* for buffer estimation */
WORD nBlockAlign; /* block size of data */
WORD wBitsPerSample;
CHUNKHDR chkData;
} WAVEHDR;
#define IS_STD_WAV_HEADER(waveHdr) ( \
waveHdr.chkRiff.ckid == FOURCC_RIFF && \
waveHdr.fccWave == FOURCC_WAVE && \
waveHdr.chkFmt.ckid == FOURCC_FMT && \
waveHdr.chkData.ckid == FOURCC_DATA && \
waveHdr.wFormatTag == WAVE_FORMAT_PCM)
/* ---------------------------------------------------------------------- */
class AudioBuffer {
protected:
struct SOUNDPARAMS params;
int size;
int busy;
int position;
public:
AudioBuffer();
virtual ~AudioBuffer();
int clippedsamples;
int is_busy();
void balloc(void);
void bfree(void);
virtual int start_write(struct SOUNDPARAMS *p); /* write */
virtual void stop_write(); /* can flush etc. */
virtual struct SOUNDPARAMS *get_params(); /* after recording or */
virtual int get_size(); /* for file readling */
virtual char *name();
virtual void *read_audio(int len); /* no comment ... */
virtual int write_audio(int len, void *data);
virtual int seek(int pos);
virtual int tell();
};
class RAMBuffer : public AudioBuffer {
private:
char **buffers;
int bufcount;
char bufname[32];
public:
RAMBuffer();
virtual ~RAMBuffer();
virtual int start_write(struct SOUNDPARAMS *p);
virtual void stop_write();
virtual struct SOUNDPARAMS *get_params();
virtual int get_size();
virtual char *name();
virtual void *read_audio(int len);
virtual int write_audio(int len, void *data);
virtual int seek(int pos);
virtual int tell();
};
class FileBuffer : public AudioBuffer {
private:
int fd,ro;
int offset,bstart,bstop;
char filename[256];
WAVEHDR fileheader;
char buffer[65536];
void init_header();
int parse_header();
public:
FileBuffer();
virtual ~FileBuffer();
int attach(const char *file);
virtual int start_write(struct SOUNDPARAMS *p);
virtual void stop_write();
virtual struct SOUNDPARAMS *get_params();
virtual int get_size();
virtual char *name();
virtual void *read_audio(int len);
virtual int write_audio(int len, void *data);
virtual int seek(int pos);
virtual int tell();
};
/* -- functions -------------------------------------------------------- */
class BufferList : public QObject {
Q_OBJECT;
public:
BufferList(QListBox *l, Soundcard *c);
int add_filebuffer(const char *filename);
void save_buf(const char *filename);
private:
QListBox *listbox;
Soundcard *card;
int mon,level,wait;
struct SOUNDPARAMS params;
AudioBuffer **buffers;
int count,brecord,bplayback;
int new_buffer_count;
int add_rambuffer();
void add_buffer(AudioBuffer *buf);
void label_buffer(int buf);
void del_buffer(int buf);
void istop();
void set_pos_size(const char *start, int buf);
public slots:
void new_params(struct SOUNDPARAMS *params);
void new_data(void *data);
void post_data(void *data);
void new_ram();
void del_buf();
void set_level(int l);
void monitor();
void record();
void stop();
void play();
void forward();
void backward();
void next_buffer();
signals:
void status(const char *text);
};
#endif
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