pa_unix_oss.c File Reference

#include <stdio.h>
#include <string.h>
#include <math.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <pthread.h>
#include <stdlib.h>
#include <assert.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/poll.h>
#include <limits.h>
#include <semaphore.h>
#include "portaudio.h"
#include "pa_util.h"
#include "pa_allocation.h"
#include "pa_hostapi.h"
#include "pa_stream.h"
#include "pa_cpuload.h"
#include "pa_process.h"
#include "pa_unix_util.h"
#include "pa_debugprint.h"

Data Structures
struct	PaOSSHostApiRepresentation
struct	PaOssStreamComponent
struct	PaOssStream

Macros
#define	ENSURE_(expr, code)
#define	AFMT_S16_NE   Get_AFMT_S16_NE()

Typedefs
typedef struct PaOssStream	PaOssStream

Enumerations
enum	StreamMode { StreamMode_In, StreamMode_Out }

Functions
PaError	PaOSS_Initialize (PaUtilHostApiRepresentation **hostApi, PaHostApiIndex hostApiIndex)
PaError	PaUtil_InitializeDeviceInfo (PaDeviceInfo *deviceInfo, const char *name, PaHostApiIndex hostApiIndex, int maxInputChannels, int maxOutputChannels, PaTime defaultLowInputLatency, PaTime defaultLowOutputLatency, PaTime defaultHighInputLatency, PaTime defaultHighOutputLatency, double defaultSampleRate, PaUtilAllocationGroup *allocations)

Macro Definition Documentation

#define AFMT_S16_NE   Get_AFMT_S16_NE()

#define ENSURE_	(		expr,
			code
	)

Value:

do { \
        if( UNLIKELY( (sysErr_ = (expr)) < 0 ) ) \
        { \
            /* PaUtil_SetLastHostErrorInfo should only be used in the main thread */ \
            if( (code) == paUnanticipatedHostError && pthread_self() == mainThread_ ) \
            { \
                PaUtil_SetLastHostErrorInfo( paOSS, sysErr_, strerror( errno ) ); \
            } \
            \
            PaUtil_DebugPrint(( "Expression '" #expr "' failed in '" __FILE__ "', line: " STRINGIZE( __LINE__ ) "\n" )); \
            result = (code); \
            goto error; \
        } \
    } while( 0 );

Typedef Documentation

typedef struct PaOssStream PaOssStream

Implementation specific representation of a PaStream.

Enumeration Type Documentation

enum StreamMode

Enumerator
StreamMode_In
StreamMode_Out

Function Documentation

PaError PaOSS_Initialize	(	PaUtilHostApiRepresentation **	hostApi,
		PaHostApiIndex	hostApiIndex
	)

Initialize the OSS API implementation.

This function will initialize host API datastructures and query host devices for information.

Aspect DeviceCapabilities: Enumeration of host API devices is initiated from here

Aspect FreeResources: If an error is encountered under way we have to free each resource allocated in this function, this happens with the usual "error" label.

References PaOSSHostApiRepresentation::allocations, PaOSSHostApiRepresentation::blockingStreamInterface, PaOSSHostApiRepresentation::callbackStreamInterface, GetStreamReadAvailable(), GetStreamWriteAvailable(), PaOSSHostApiRepresentation::hostApiIndex, PaUtilHostApiRepresentation::info, PaOSSHostApiRepresentation::inheritedHostApiRep, PA_ENSURE, PA_UNLESS, paInsufficientMemory, paNoError, paOSS, PaUtil_AllocateMemory(), PaUtil_CreateAllocationGroup(), PaUtil_DestroyAllocationGroup(), PaUtil_DummyGetCpuLoad(), PaUtil_DummyGetReadAvailable(), PaUtil_DummyGetWriteAvailable(), PaUtil_DummyRead(), PaUtil_DummyWrite(), PaUtil_FreeAllAllocations(), PaUtil_FreeMemory(), PaUtil_InitializeStreamInterface(), ReadStream(), PaHostApiInfo::structVersion, and WriteStream().

PaError PaUtil_InitializeDeviceInfo	(	PaDeviceInfo *	deviceInfo,
		const char *	name,
		PaHostApiIndex	hostApiIndex,
		int	maxInputChannels,
		int	maxOutputChannels,
		PaTime	defaultLowInputLatency,
		PaTime	defaultLowOutputLatency,
		PaTime	defaultHighInputLatency,
		PaTime	defaultHighOutputLatency,
		double	defaultSampleRate,
		PaUtilAllocationGroup *	allocations
	)

References PaDeviceInfo::defaultHighInputLatency, PaDeviceInfo::defaultHighOutputLatency, PaDeviceInfo::defaultLowInputLatency, PaDeviceInfo::defaultLowOutputLatency, PaDeviceInfo::defaultSampleRate, PaDeviceInfo::hostApi, PaDeviceInfo::maxInputChannels, PaDeviceInfo::maxOutputChannels, PaDeviceInfo::name, PA_UNLESS, paInsufficientMemory, paNoError, PaUtil_GroupAllocateMemory(), and PaDeviceInfo::structVersion.