* Added wxMMedia in the repository so people interrested in it can work on it

* WARNING! It is quite unstable on Windows and it doesn't work on Linux for the moment because I didn't finish fixing the CODEC stream. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@975 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
1998-11-09 18:37:38 +00:00
parent ea57084d10
commit 4d6306eb4d
54 changed files with 7666 additions and 0 deletions
--- a/utils/wxMMedia/sndwav.cpp
+++ b/utils/wxMMedia/sndwav.cpp
@@ -0,0 +1,186 @@
+////////////////////////////////////////////////////////////////////////////////
+// Name:       sndwav.cpp
+// Purpose:    wxMMedia
+// Author:     Guilhem Lavaux
+// Created:    1997
+// Updated:    February 1998
+// Copyright:  (C) 1997, 1998, Guilhem Lavaux
+// License:    wxWindows license
+////////////////////////////////////////////////////////////////////////////////
+#ifdef __GNUG__
+#pragma implementation "sndwav.h"
+#endif
+
+#ifdef WX_PRECOMP
+#include "wx_prec.h"
+#else
+#include "wx/wx.h"
+#endif
+#include "sndwav.h"
+#include "sndfrmt.h"
+#include "sndpcm.h"
+
+#ifdef __BORLANDC__
+#pragma hdrstop
+#endif
+
+wxSndWavCodec::wxSndWavCodec()
+  : wxSndFileCodec(), riff_codec()
+{
+  m_sndtime.hours = -1;
+}
+
+wxSndWavCodec::wxSndWavCodec(wxOutputStream& s, bool seekable)
+  : wxSndFileCodec(s, seekable)
+{
+  if (!seekable)
+    CacheIO();
+  riff_codec = wxRiffCodec(*m_ostream);
+  m_sndtime.hours = -1;
+}
+
+wxSndWavCodec::wxSndWavCodec(wxInputStream& s, bool preload, bool seekable)
+  : wxSndFileCodec(s, preload, seekable)
+{
+  if (!seekable)
+    CacheIO();
+
+  riff_codec = wxRiffCodec(*m_istream);
+  m_sndtime.hours = -1;
+}
+
+wxSndWavCodec::wxSndWavCodec(const wxString& fname)
+  : wxSndFileCodec(fname)
+{
+  riff_codec = wxRiffCodec(*m_istream);
+  m_sndtime.hours = -1;
+}
+
+wxUint32 wxSndWavCodec::PrepareToPlay()
+{
+  if (!riff_codec.RiffReset(RIFF_READ))
+    return 0;
+
+  if (!riff_codec.FindChunk("RIFF", TRUE)) {
+    wxSndFileCodec::m_mmerror = wxMMFILE_INVALID;
+    return 0;
+  }
+
+  char tmp_buf[5];
+  riff_codec.ReadData(tmp_buf, 4);
+  tmp_buf[4] = 0;
+  if (wxString("WAVE") != tmp_buf) {
+    wxSndFileCodec::m_mmerror = wxMMFILE_INVALID;
+    return 0;
+  }
+  if (!riff_codec.FindChunk("fmt ", TRUE))
+    return 0;
+
+  riff_codec.Read16(wav_hdr.format);
+  riff_codec.Read16(wav_hdr.channels);
+  riff_codec.Read32(wav_hdr.sample_fq);
+  riff_codec.Read32(wav_hdr.byte_p_sec);
+  riff_codec.Read16(wav_hdr.byte_p_spl);
+  riff_codec.Read16(wav_hdr.bits_p_spl);
+
+  if (!riff_codec.FindChunk("data"))
+    return 0;
+
+  m_sndformat.SetSampleRate(wav_hdr.sample_fq);
+  m_sndformat.SetBps(wav_hdr.bits_p_spl);
+  m_sndformat.SetChannels(wav_hdr.channels);
+  m_sndmode = wxSND_OUTPUT;
+  ChangeCodec(wav_hdr.format);
+
+  m_sndformat.SetSampleRate(wav_hdr.sample_fq);
+  m_sndformat.SetBps(wav_hdr.bits_p_spl);
+  m_sndformat.SetChannels(wav_hdr.channels);
+
+  if (wav_hdr.format == WXSOUND_PCM) {
+    m_sndformat.SetSign(wxSND_SAMPLE_SIGNED);
+    m_sndformat.SetByteOrder(wxSND_SAMPLE_LE);
+  }
+
+  wxUint32 sec1 = riff_codec.GetChunkLength() / wav_hdr.byte_p_sec,
+           sec2 = sec1 % 3600;
+
+  m_sndtime.hours = sec1 / 3600;
+  m_sndtime.minutes = sec2 / 60;
+  m_sndtime.seconds = sec2 % 60;
+
+  wxSndFileCodec::m_mmerror = wxMMFILE_NOERROR;
+
+  return riff_codec.GetChunkLength();
+}
+
+wxSndWavCodec::~wxSndWavCodec()
+{
+}
+
+bool wxSndWavCodec::OnNeedData(char *buf, wxUint32 size)
+{
+  return riff_codec.ReadData(buf, size);
+}
+
+bool wxSndWavCodec::OnWriteData(char *buf, wxUint32 size)
+{
+  return riff_codec.WriteData(buf, size);
+}
+
+bool wxSndWavCodec::PrepareToRecord(wxUint32 m_fsize)
+{
+  wxUint32 total_size;
+
+  if (!riff_codec.RiffReset(RIFF_WRITE))
+    return FALSE;
+
+  total_size = 16 + sizeof(wav_hdr) + m_fsize;
+
+  if (!riff_codec.CreateChunk("RIFF", total_size))
+    return FALSE;
+  riff_codec.WriteData("WAVE", 4);
+  if (!riff_codec.CreateChunk("fmt ", sizeof(wav_hdr)))
+    return FALSE;
+
+  wav_hdr.format = 1; // PCM_WAV_FORMAT
+  wav_hdr.channels = m_sndformat.GetChannels();
+  wav_hdr.sample_fq = m_sndformat.GetSampleRate();
+  wav_hdr.byte_p_spl = (m_sndformat.GetBps() / 8) * wav_hdr.channels;
+  wav_hdr.byte_p_sec = m_sndformat.GetCodec()->GetByteRate();
+  wav_hdr.bits_p_spl = m_sndformat.GetBps();
+  ChangeCodec(WXSOUND_PCM);
+
+  if (wav_hdr.format == WXSOUND_PCM) {
+    m_sndformat.SetSign(wxSND_SAMPLE_SIGNED);
+    m_sndformat.SetByteOrder(wxSND_SAMPLE_LE);
+  }
+
+  riff_codec.Write16(wav_hdr.format);
+  riff_codec.Write16(wav_hdr.channels);
+  riff_codec.Write32(wav_hdr.sample_fq);
+  riff_codec.Write32(wav_hdr.byte_p_sec);
+  riff_codec.Write16(wav_hdr.byte_p_spl);
+  riff_codec.Write16(wav_hdr.bits_p_spl);
+
+  if (!riff_codec.CreateChunk("data", m_fsize))
+    return FALSE;
+  return TRUE;
+}
+
+void wxSndWavCodec::SetFile(wxInputStream& s, bool preload, bool seekable)
+{
+  wxMMediaFile::SetFile(s, preload, seekable);
+  if (!seekable)
+    CacheIO();
+
+  riff_codec.SetFile((seekable) ? s : *m_istream);
+}
+
+void wxSndWavCodec::SetFile(wxOutputStream& s, bool seekable)
+{
+  wxMMediaFile::SetFile(s, seekable);
+  if (!seekable)
+    CacheIO();
+
+  riff_codec.SetFile((seekable) ? s : *m_ostream);
+}