AudioBackendLibportaudio.cc File Reference

#include <Nsound/Nsound.h>
#include <Nsound/AudioBackendLibportaudio.h>
#include <Nsound/AudioPlayback.h>
#include <algorithm>
#include <iostream>
#include <string>
#include <time.h>

Include dependency graph for AudioBackendLibportaudio.cc:

Go to the source code of this file.

Functions
PaError	write_stream (PaStream *stream, void *data, uint32 position, uint32 n_frames_per_buffer, PaSampleFormat format)
static std::string	lower (const std::string &x)
static int32	integer (const std::string &x, Nsound::AudioBackend::State *state)

Function Documentation

PaError write_stream	(	PaStream *	stream,
		void *	data,
		uint32	position,
		uint32	n_frames_per_buffer,
		PaSampleFormat	format
	)

Definition at line 342 of file AudioBackendLibportaudio.cc.

References M_THROW.

Referenced by Nsound::AudioBackendLibportaudio::play().

{
    switch(format)
    {
        case paInt8:
        {
            int8 * data_ptr = reinterpret_cast<int8 *>(data);
            return Pa_WriteStream(
                stream,
                reinterpret_cast<void *>(data_ptr + position),
                n_frames_per_buffer);
        }

        case paInt16:
        {
            int16 * data_ptr = reinterpret_cast<int16 *>(data);
            return Pa_WriteStream(
                stream,
                reinterpret_cast<void *>(data_ptr + position),
                n_frames_per_buffer);
        }

        case paInt32:
        {
            int32 * data_ptr = reinterpret_cast<int32 *>(data);
            return Pa_WriteStream(
                stream,
                reinterpret_cast<void *>(data_ptr + position),
                n_frames_per_buffer);
        }
    }

    M_THROW("Nsound::AudioBackendLibportaudio::initialize():"
        << ": can't handle bits per sample type: "
        << format
        << "\n");

    return paSampleFormatNotSupported;
}

static std::string lower ( const std::string &  x )

static

Definition at line 597 of file AudioBackendLibportaudio.cc.

Referenced by Nsound::AudioBackendLibportaudio::scanDevices(), and Nsound::AudioBackendLibportaudio::setOption().

{
    std::string y = x;
    std::transform(y.begin(), y.end(), y.begin(), ::tolower);
    return y;
}

static int32 integer ( const std::string &  x, Nsound::AudioBackend::State *  state  )

static

Definition at line 652 of file AudioBackendLibportaudio.cc.

References Nsound::AudioBackend::BACKEND_ERROR, and M_THROW.

Referenced by Nsound::AudioBackendLibportaudio::setOption().

{
    std::stringstream ss(x);
    int32 i = 0;

    ss >> i;

    if(ss.fail())
    {
        *state = AudioBackend::BACKEND_ERROR;
        M_THROW("Nsound::AudioBackendLibportaudio::setOption():"
            << ": could not convert '"
            << x
            << "' to an integer.\n");
        return -1;
    }

    return i;
}