wxWidgets/utils/wxMMedia2/lib/sndfile.cpp

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// --------------------------------------------------------------------------
// Name: sndfile.cpp
// Purpose:
// Date: 08/11/1999
// Author: Guilhem Lavaux <lavaux@easynet.fr> (C) 1999
// CVSID: $Id$
// --------------------------------------------------------------------------
#include <wx/stream.h>
#include "sndbase.h"
#include "sndcodec.h"
#include "sndfile.h"
#include "sndcpcm.h"
#include "sndulaw.h"
// --------------------------------------------------------------------------
// Sound codec router
// --------------------------------------------------------------------------
wxSoundRouterStream::wxSoundRouterStream(wxSoundStream& sndio)
: wxSoundStreamCodec(sndio)
{
m_router = NULL;
}
wxSoundRouterStream::~wxSoundRouterStream()
{
if (m_router)
delete m_router;
}
wxSoundStream& wxSoundRouterStream::Read(void *buffer, size_t len)
{
if (m_router) {
m_router->Read(buffer, len);
m_snderror = m_router->GetError();
m_lastcount = m_router->GetLastAccess();
} else {
m_sndio->Read(buffer, len);
m_snderror = m_sndio->GetError();
m_lastcount = m_sndio->GetLastAccess();
}
return *this;
}
wxSoundStream& wxSoundRouterStream::Write(const void *buffer, size_t len)
{
if (m_router) {
m_router->Write(buffer, len);
m_snderror = m_router->GetError();
m_lastcount = m_router->GetLastAccess();
} else {
m_sndio->Write(buffer, len);
m_snderror = m_sndio->GetError();
m_lastcount = m_sndio->GetLastAccess();
}
return *this;
}
bool wxSoundRouterStream::SetSoundFormat(const wxSoundFormatBase& format)
{
if (m_router)
delete m_router;
if (m_sndio->SetSoundFormat(format)) {
wxSoundStream::SetSoundFormat(m_sndio->GetSoundFormat());
return TRUE;
}
switch(format.GetType()) {
case wxSOUND_NOFORMAT:
return FALSE;
case wxSOUND_PCM:
m_router = new wxSoundStreamPcm(*m_sndio);
m_router->SetSoundFormat(format);
break;
case wxSOUND_ULAW:
m_router = new wxSoundStreamUlaw(*m_sndio);
m_router->SetSoundFormat(format);
break;
}
wxSoundStream::SetSoundFormat(m_router->GetSoundFormat());
return TRUE;
}
bool wxSoundRouterStream::StartProduction(int evt)
{
if (!m_router) {
if (m_sndio->StartProduction(evt))
return TRUE;
m_snderror = m_sndio->GetError();
m_lastcount = m_sndio->GetLastAccess();
return FALSE;
}
if (m_router->StartProduction(evt))
return TRUE;
m_snderror = m_router->GetError();
m_lastcount = m_router->GetLastAccess();
return FALSE;
}
bool wxSoundRouterStream::StopProduction()
{
if (!m_router) {
if (m_sndio->StopProduction())
return TRUE;
m_snderror = m_sndio->GetError();
m_lastcount = m_sndio->GetLastAccess();
return FALSE;
}
if (m_router->StopProduction())
return TRUE;
m_snderror = m_router->GetError();
m_lastcount = m_router->GetLastAccess();
return FALSE;
}
// --------------------------------------------------------------------------
// wxSoundFileStream: generic reader
// --------------------------------------------------------------------------
wxSoundFileStream::wxSoundFileStream(wxInputStream& stream,
wxSoundStream& io_sound)
: m_codec(io_sound), m_sndio(&io_sound),
m_input(&stream), m_output(NULL), m_state(wxSOUND_FILE_STOPPED)
{
}
wxSoundFileStream::wxSoundFileStream(wxOutputStream& stream,
wxSoundStream& io_sound)
: m_codec(io_sound), m_sndio(&io_sound),
m_input(NULL), m_output(&stream), m_state(wxSOUND_FILE_STOPPED)
{
}
wxSoundFileStream::~wxSoundFileStream()
{
if (m_state != wxSOUND_FILE_STOPPED)
Stop();
}
bool wxSoundFileStream::Play()
{
if (m_state != wxSOUND_FILE_STOPPED)
return FALSE;
if (!PrepareToPlay())
return FALSE;
if (!StartProduction(wxSOUND_OUTPUT))
return FALSE;
m_state = wxSOUND_FILE_PLAYING;
return TRUE;
}
bool wxSoundFileStream::Record(unsigned long time)
{
if (m_state != wxSOUND_FILE_STOPPED)
return FALSE;
if (!PrepareToRecord(time))
return FALSE;
m_len = m_sndformat->GetBytesFromTime(time);
if (!StartProduction(wxSOUND_INPUT))
return FALSE;
m_state = wxSOUND_FILE_RECORDING;
return TRUE;
}
bool wxSoundFileStream::Stop()
{
if (m_state == wxSOUND_FILE_STOPPED)
return FALSE;
if (!StopProduction())
return FALSE;
if (m_state == wxSOUND_FILE_RECORDING)
if (!FinishRecording()) {
m_state = wxSOUND_FILE_STOPPED;
return FALSE;
}
// TODO reset counter
m_state = wxSOUND_FILE_STOPPED;
return TRUE;
}
bool wxSoundFileStream::Pause()
{
if (m_state == wxSOUND_FILE_PAUSED || m_state == wxSOUND_FILE_STOPPED)
return FALSE;
if (!StopProduction())
return FALSE;
m_oldstate = m_state;
m_state = wxSOUND_FILE_PAUSED;
return TRUE;
}
bool wxSoundFileStream::Resume()
{
if (m_state == wxSOUND_FILE_PLAYING || m_state == wxSOUND_FILE_RECORDING ||
m_state == wxSOUND_FILE_STOPPED)
return FALSE;
if (!StartProduction( (m_oldstate == wxSOUND_FILE_PLAYING) ?
wxSOUND_OUTPUT : wxSOUND_INPUT))
return FALSE;
m_state = m_oldstate;
return TRUE;
}
wxSoundStream& wxSoundFileStream::Read(void *buffer, size_t len)
{
m_lastcount = GetData(buffer, len);
return *this;
}
wxSoundStream& wxSoundFileStream::Write(const void *buffer, size_t len)
{
m_lastcount = PutData(buffer, len);
return *this;
}
void wxSoundFileStream::SetDuplexMode(bool duplex)
{
}
bool wxSoundFileStream::StartProduction(int evt)
{
m_sndio->SetEventHandler(this);
if (!m_codec.StartProduction(evt))
return FALSE;
return TRUE;
}
bool wxSoundFileStream::StopProduction()
{
return m_codec.StopProduction();
}
void wxSoundFileStream::OnSoundEvent(int evt)
{
size_t len = m_sndio->GetBestSize();
char buffer[m_sndio->GetBestSize()];
wxSoundStream::OnSoundEvent(evt);
switch(evt) {
case wxSOUND_INPUT:
if (len > m_len)
len = m_len;
len = m_codec.Read(buffer, len).GetLastAccess();
PutData(buffer, len);
m_len -= len;
if (m_len == 0) {
Stop();
return;
}
break;
case wxSOUND_OUTPUT:
len = GetData(buffer, len);
if (len == 0) {
Stop();
return;
}
m_codec.Write(buffer, len);
break;
}
}
bool wxSoundFileStream::SetSoundFormat(const wxSoundFormatBase& format)
{
wxSoundStream::SetSoundFormat(format);
return m_codec.SetSoundFormat(format);
}