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#ifndef OSSPLAY_H #define OSSPLAY_H #include <errno.h> #include <fcntl.h> #include <limits.h> #include <unistd.h> #include <stdarg.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/ioctl.h> #include <soundcard.h> #undef MPEG_SUPPORT #define PLAYBUF_SIZE 1024 #define RECBUF_SIZE 512 #define DEFAULT_CHANNELS 1 #define DEFAULT_FORMAT AFMT_U8 #define DEFAULT_SPEED 11025 #define MAX_CHANNELS 128
Every update of output in verbose mode while playing is separated by at least PLAY_UPDATE_INTERVAL milliseconds.
#define PLAY_UPDATE_INTERVAL 200.0 /* As above, but for recording */ #define REC_UPDATE_INTERVAL 1000.0 /* As above, but used for level meters while recording */ #define LMETER_UPDATE_INTERVAL 20.0 /* Should be smaller than the others. Used to ensure an update at end of file */ #define UPDATE_EPSILON 1.0 typedef signed char int8; typedef unsigned char uint8; typedef short int16; typedef unsigned short uint16; typedef int int32; typedef unsigned int uint32; typedef char flag; #define S32_MAX 2147483647 #define S32_MIN (-S32_MAX - 1) #define U32_MAX 4294967295U
We overload the format definitions to include some "fake" formats. Therefor, the values should be negative to avoid collusions.
enum {
AFMT_MS_ADPCM = -256,
AFMT_MS_IMA_ADPCM,
AFMT_MS_IMA_ADPCM_3BITS,
AFMT_MAC_IMA_ADPCM,
AFMT_S24_PACKED_BE,
AFMT_CR_ADPCM_2,
AFMT_CR_ADPCM_3,
AFMT_CR_ADPCM_4,
AFMT_FIBO_DELTA,
AFMT_EXP_DELTA,
AFMT_FLOAT32_BE,
AFMT_FLOAT32_LE,
AFMT_DOUBLE64_BE,
AFMT_DOUBLE64_LE
};
#define AFMT_S24_PACKED_LE AFMT_S24_PACKED
typedef struct {
int fd;
int format;
int channels;
int speed;
int flags;
int reclevel;
#ifndef OSS_DEVNODE_SIZE
#define OSS_DEVNODE_SIZE 32
#endif
char dname[OSS_DEVNODE_SIZE];
#ifndef OSS_LONGNAME_SIZE
#define OSS_LONGNAME_SIZE 64
#endif
char current_songname[OSS_LONGNAME_SIZE];
char * recsrc;
char * playtgt;
}
dspdev_t;
typedef enum {
WAVE_FILE,
AU_FILE,
RAW_FILE,
AIFF_FILE,
AIFC_FILE,
WAVE_FILE_BE,
_8SVX_FILE,
_16SV_FILE,
MAUD_FILE
}
fctypes_t;
Used in the format_t table below. Shows what actions can be done with the format - Play, Record or both.
typedef enum {
CP = 0x1,
CR = 0x2,
CRP = 0x3
}
direction_t;
typedef struct fmt_struct {
const char * name;
const int fmt;
const direction_t dir;
const int may_conv;
}
format_t;
typedef struct cnt_struct {
const char * name;
const fctypes_t type;
const int dformat;
const int dchannels;
const int dspeed;
}
container_t;
typedef struct {
int coeff1, coeff2;
}
adpcm_coeff;
typedef struct msadpcm_values {
int nBlockAlign;
int wSamplesPerBlock;
int wNumCoeff;
int bits;
adpcm_coeff coeff[32];
int channels;
}
msadpcm_values_t;
typedef ssize_t (decfunc_t) (unsigned char **, unsigned char *,
ssize_t, void *);
typedef ssize_t (seekfunc_t) (int, unsigned long long *, unsigned long long,
double, unsigned long long, int);
typedef enum {
FREE_OBUF = 1,
FREE_META = 2
}
decoder_flag_t;
typedef struct decoders_queue {
struct decoders_queue * next;
decfunc_t * decoder;
unsigned char * outbuf;
void * metadata;
decoder_flag_t flag;
}
decoders_queue_t;
typedef enum {
E_OK,
E_SETUP_ERROR,
E_FORMAT_UNSUPPORTED,
E_CHANNELS_UNSUPPORTED,
E_DECODE,
E_ENCODE,
E_USAGE,
Not an error, but since seek function can also return an error this needs to be different from the others
SEEK_CONT_AFTER_DECODE
}
errors_t;
static const format_t format_a[] = {
{"S8", AFMT_S8, CRP, AFMT_S16_NE},
{"U8", AFMT_U8, CRP, AFMT_S16_NE},
{"S16_LE", AFMT_S16_LE, CRP, AFMT_S16_NE},
{"S16_BE", AFMT_S16_BE, CRP, AFMT_S16_NE},
{"U16_LE", AFMT_U16_LE, CRP, AFMT_S16_NE},
{"U16_BE", AFMT_U16_BE, CRP, AFMT_S16_NE},
{"S24_LE", AFMT_S24_LE, CRP, 0},
{"S24_BE", AFMT_S24_BE, CRP, 0},
{"S32_LE", AFMT_S32_LE, CRP, AFMT_S32_NE},
{"S32_BE", AFMT_S32_BE, CRP, AFMT_S32_NE},
{"A_LAW", AFMT_A_LAW, CRP, AFMT_S16_NE},
{"MU_LAW", AFMT_MU_LAW, CRP, AFMT_S16_NE},
{"IMA_ADPCM", AFMT_IMA_ADPCM, CP, 0},
{"IMA_ADPCM_3BITS", AFMT_MS_IMA_ADPCM_3BITS,CP, 0},
{"MS_ADPCM", AFMT_MS_ADPCM, CP, 0},
{"CR_ADPCM_2", AFMT_CR_ADPCM_2, CP, 0},
{"CR_ADPCM_3", AFMT_CR_ADPCM_3, CP, 0},
{"CR_ADPCM_4", AFMT_CR_ADPCM_4, CP, 0},
{"FLOAT32_LE", AFMT_FLOAT32_LE, CP, 0},
{"FLOAT32_BE", AFMT_FLOAT32_BE, CP, 0},
{"DOUBLE64_LE", AFMT_DOUBLE64_LE, CP, 0},
{"DOUBLE64_BE", AFMT_DOUBLE64_BE, CP, 0},
{"S24_PACKED", AFMT_S24_PACKED, CRP, 0},
{"S24_PACKED_BE", AFMT_S24_PACKED_BE, CP, 0},
{"SPDIF_RAW", AFMT_SPDIF_RAW, CR, 0},
{"FIBO_DELTA", AFMT_FIBO_DELTA, CP, 0},
{"EXP_DELTA", AFMT_EXP_DELTA, CP, 0},
{NULL, 0, 0, 0}
};
static const container_t container_a[] = {
{"WAV", WAVE_FILE, AFMT_S16_LE, 2, 48000},
{"AU", AU_FILE, AFMT_MU_LAW, 1, 8000},
{"RAW", RAW_FILE, AFMT_S16_LE, 2, 44100},
{"AIFF", AIFF_FILE, AFMT_S16_BE, 2, 48000},
{NULL, 0, 0, 0, 0}
}; /* Order should match fctypes_t enum so that container_a[type] works */
int be_int (const unsigned char *, int);
const char * filepart (const char *);
float format2bits (int);
int le_int (const unsigned char *, int);
long double ossplay_ldexpl (long double, int);
off_t ossplay_lseek_stdin (int, off_t, int);
int ossplay_parse_opts (int, char **, dspdev_t *);
int ossrecord_parse_opts (int, char **, dspdev_t *);
int play (dspdev_t *, int, unsigned long long *, unsigned long long, double,
decoders_queue_t *, seekfunc_t *);
int record (dspdev_t *, FILE *, const char *, double, unsigned long long,
unsigned long long *, decoders_queue_t * dec);
const char * sample_format_name (int);
int setup_device (dspdev_t *, int, int, int);
int silence (dspdev_t *, unsigned long long, int);
void select_playtgt (dspdev_t *);
void select_recsrc (dspdev_t *);
void open_device (dspdev_t *);
void close_device (dspdev_t *);
#if !defined(OSS_BIG_ENDIAN) && !defined(OSS_LITTLE_ENDIAN)
#if AFMT_S16_NE == AFMT_S16_BE
#define OSS_BIG_ENDIAN
#else
#define OSS_LITTLE_ENDIAN
#endif /* AFMT_S16_NE == AFMT_S16_BE */
#endif /* !OSS_BIG_ENDIAN && !OSS_LITTLE_ENDIAN */
#include "ossplay_console.h"
#endif