X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/77ffb5937e89927b621128789401db8921fe580f..a766986f6d443ba1d50e3af25f3306fa56e4518e:/src/unix/sound.cpp diff --git a/src/unix/sound.cpp b/src/unix/sound.cpp index 26d1068d85..0afab5a47b 100644 --- a/src/unix/sound.cpp +++ b/src/unix/sound.cpp @@ -1,26 +1,19 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: sound.cpp +// Name: src/unix/sound.cpp // Purpose: wxSound // Author: Marcel Rasche, Vaclav Slavik // Modified by: // Created: 25/10/98 // RCS-ID: $Id$ // Copyright: (c) Julian Smart, Open Source Applications Foundation -// Licence: wxWidgets licence +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// -#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) -#pragma implementation "sound.h" -#pragma implementation "soundbase.h" -#endif - // for compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" -#include "wx/setup.h" - #if defined(__BORLANDC__) -#pragma hdrstop + #pragma hdrstop #endif #if wxUSE_SOUND @@ -38,11 +31,11 @@ #include "wx/event.h" #include "wx/intl.h" #include "wx/log.h" + #include "wx/module.h" #endif #include "wx/thread.h" #include "wx/file.h" -#include "wx/module.h" #include "wx/sound.h" #include "wx/dynlib.h" @@ -55,7 +48,7 @@ static wxMutex gs_soundMutex; // ---------------------------------------------------------------------------- // wxSoundData // ---------------------------------------------------------------------------- - + void wxSoundData::IncRef() { #if wxUSE_THREADS @@ -123,7 +116,7 @@ public: private: int OpenDSP(const wxSoundData *data); bool InitDSP(int dev, const wxSoundData *data); - + int m_DSPblkSize; // Size of the DSP buffer bool m_needConversion; }; @@ -142,7 +135,7 @@ bool wxSoundBackendOSS::Play(wxSoundData *data, unsigned flags, volatile wxSoundPlaybackStatus *status) { int dev = OpenDSP(data); - + if (dev < 0) return false; @@ -173,7 +166,7 @@ bool wxSoundBackendOSS::Play(wxSoundData *data, unsigned flags, l += i; } while (play && l < datasize); } while (flags & wxSOUND_LOOP); - + close(dev); return true; } @@ -181,10 +174,10 @@ bool wxSoundBackendOSS::Play(wxSoundData *data, unsigned flags, int wxSoundBackendOSS::OpenDSP(const wxSoundData *data) { int dev = -1; - + if ((dev = open(AUDIODEV, O_WRONLY, 0)) <0) return -1; - + if (!InitDSP(dev, data) || m_needConversion) { close(dev); @@ -207,7 +200,7 @@ bool wxSoundBackendOSS::InitDSP(int dev, const wxSoundData *data) } m_needConversion = false; - + tmp = data->m_bitsPerSample; if (ioctl(dev, SNDCTL_DSP_SAMPLESIZE, &tmp) < 0) { @@ -220,8 +213,8 @@ bool wxSoundBackendOSS::InitDSP(int dev, const wxSoundData *data) _T("Unable to set DSP sample size to %d (wants %d)"), data->m_bitsPerSample, tmp); m_needConversion = true; - } - + } + unsigned stereo = data->m_channels == 1 ? 0 : 1; tmp = stereo; if (ioctl(dev, SNDCTL_DSP_STEREO, &tmp) < 0) @@ -231,7 +224,7 @@ bool wxSoundBackendOSS::InitDSP(int dev, const wxSoundData *data) } if (tmp != stereo) { - wxLogTrace(_T("sound"), _T("Unable to set DSP to %s."), stereo? _T("stereo"):_T("mono")); + wxLogTrace(_T("sound"), _T("Unable to set DSP to %s."), stereo? _T("stereo"):_T("mono")); m_needConversion = true; } @@ -249,13 +242,13 @@ bool wxSoundBackendOSS::InitDSP(int dev, const wxSoundData *data) // problems. Sound cards will sometimes use things like 44101 when you // ask for 44100. No need overriding this and having strange output // file rates for something that we can't hear anyways. - if (data->m_samplingRate - tmp > (tmp * .01) || - tmp - data->m_samplingRate > (tmp * .01)) { - wxLogTrace(_T("sound"), + if (data->m_samplingRate - tmp > (tmp * .01) || + tmp - data->m_samplingRate > (tmp * .01)) { + wxLogTrace(_T("sound"), _T("Unable to set DSP sampling rate to %d (wants %d)"), data->m_samplingRate, tmp); m_needConversion = true; - } + } } // Do this last because some drivers can adjust the buffer sized based on @@ -267,7 +260,7 @@ bool wxSoundBackendOSS::InitDSP(int dev, const wxSoundData *data) } return true; } - + #endif // HAVE_SYS_SOUNDCARD_H // ---------------------------------------------------------------------------- @@ -287,7 +280,7 @@ public: wxSoundData *data, unsigned flags) : wxThread(), m_adapt(adaptor), m_data(data), m_flags(flags) {} virtual ExitCode Entry(); - + protected: wxSoundSyncOnlyAdaptor *m_adapt; wxSoundData *m_data; @@ -303,7 +296,7 @@ class wxSoundSyncOnlyAdaptor : public wxSoundBackend public: wxSoundSyncOnlyAdaptor(wxSoundBackend *backend) : m_backend(backend), m_playing(false) {} - ~wxSoundSyncOnlyAdaptor() + virtual ~wxSoundSyncOnlyAdaptor() { delete m_backend; } @@ -393,11 +386,11 @@ bool wxSoundSyncOnlyAdaptor::Play(wxSoundData *data, unsigned flags, void wxSoundSyncOnlyAdaptor::Stop() { wxLogTrace(_T("sound"), _T("asking audio to stop")); - + #if wxUSE_THREADS // tell the player thread (if running) to stop playback ASAP: m_status.m_stopRequested = true; - + // acquire the mutex to be sure no sound is being played, then // release it because we don't need it for anything (the effect of this // is that calling thread will wait until playback thread reacts to @@ -413,13 +406,13 @@ bool wxSoundSyncOnlyAdaptor::IsPlaying() const #if wxUSE_THREADS return m_status.m_playing; #else - return FALSE; + return false; #endif } // ---------------------------------------------------------------------------- -// wxSound +// wxSound // ---------------------------------------------------------------------------- wxSoundBackend *wxSound::ms_backend = NULL; @@ -452,34 +445,41 @@ wxSound::~wxSound() Free(); } -bool wxSound::Create(const wxString& fileName, bool isResource) +bool wxSound::Create(const wxString& fileName, + bool WXUNUSED_UNLESS_DEBUG(isResource)) { wxASSERT_MSG( !isResource, _T("Loading sound from resources is only supported on Windows") ); - + Free(); - + wxFile fileWave; if (!fileWave.Open(fileName, wxFile::read)) - { - return false; - } + { + return false; + } + + wxFileOffset lenOrig = fileWave.Length(); + if ( lenOrig == wxInvalidOffset ) + return false; - size_t len = fileWave.Length(); + size_t len = wx_truncate_cast(size_t, lenOrig); wxUint8 *data = new wxUint8[len]; - if (fileWave.Read(data, len) != len) + if ( fileWave.Read(data, len) != lenOrig ) { + delete [] data; wxLogError(_("Couldn't load sound data from '%s'."), fileName.c_str()); return false; } if (!LoadWAV(data, len, false)) { + delete [] data; wxLogError(_("Sound file '%s' is in unsupported format."), fileName.c_str()); return false; } - + return true; } @@ -569,7 +569,7 @@ bool wxSound::Create(int size, const wxByte* data) wxLogTrace(_T("sound"), _T("unloading backend")); Stop(); - + delete ms_backend; ms_backend = NULL; #if wxUSE_LIBSDL && wxUSE_PLUGINS @@ -610,7 +610,7 @@ void wxSound::Free() } typedef struct -{ +{ wxUint32 uiSize; wxUint16 uiFormatTag; wxUint16 uiChannels; @@ -620,19 +620,36 @@ typedef struct wxUint16 uiBitsPerSample; } WAVEFORMAT; -#define MONO 1 // and stereo is 2 by wav format #define WAVE_FORMAT_PCM 1 #define WAVE_INDEX 8 #define FMT_INDEX 12 bool wxSound::LoadWAV(const wxUint8 *data, size_t length, bool copyData) { - WAVEFORMAT waveformat; - wxUint32 ul; - - if (length < 32 + sizeof(WAVEFORMAT)) + // the simplest wave file header consists of 44 bytes: + // + // 0 "RIFF" + // 4 file size - 8 + // 8 "WAVE" + // + // 12 "fmt " + // 16 chunk size | + // 20 format tag | + // 22 number of channels | + // 24 sample rate | WAVEFORMAT + // 28 average bytes per second | + // 32 bytes per frame | + // 34 bits per sample | + // + // 36 "data" + // 40 number of data bytes + // 44 (wave signal) data + // + // so check that we have at least as much + if ( length < 44 ) return false; + WAVEFORMAT waveformat; memcpy(&waveformat, &data[FMT_INDEX + 4], sizeof(WAVEFORMAT)); waveformat.uiSize = wxUINT32_SWAP_ON_BE(waveformat.uiSize); waveformat.uiFormatTag = wxUINT16_SWAP_ON_BE(waveformat.uiFormatTag); @@ -642,6 +659,14 @@ bool wxSound::LoadWAV(const wxUint8 *data, size_t length, bool copyData) waveformat.uiBlockAlign = wxUINT16_SWAP_ON_BE(waveformat.uiBlockAlign); waveformat.uiBitsPerSample = wxUINT16_SWAP_ON_BE(waveformat.uiBitsPerSample); + // get the sound data size + wxUint32 ul; + memcpy(&ul, &data[FMT_INDEX + waveformat.uiSize + 12], 4); + ul = wxUINT32_SWAP_ON_BE(ul); + + if ( length < ul + FMT_INDEX + waveformat.uiSize + 16 ) + return false; + if (memcmp(data, "RIFF", 4) != 0) return false; if (memcmp(&data[WAVE_INDEX], "WAVE", 4) != 0) @@ -650,20 +675,14 @@ bool wxSound::LoadWAV(const wxUint8 *data, size_t length, bool copyData) return false; if (memcmp(&data[FMT_INDEX + waveformat.uiSize + 8], "data", 4) != 0) return false; - memcpy(&ul,&data[FMT_INDEX + waveformat.uiSize + 12], 4); - ul = wxUINT32_SWAP_ON_BE(ul); - - //WAS: if (ul + FMT_INDEX + waveformat.uiSize + 16 != length) - if (ul + FMT_INDEX + waveformat.uiSize + 16 > length) - return false; - + if (waveformat.uiFormatTag != WAVE_FORMAT_PCM) return false; - - if (waveformat.ulSamplesPerSec != + + if (waveformat.ulSamplesPerSec != waveformat.ulAvgBytesPerSec / waveformat.uiBlockAlign) return false; - + m_data = new wxSoundData; m_data->m_channels = waveformat.uiChannels; m_data->m_samplingRate = waveformat.ulSamplesPerSec; @@ -679,7 +698,7 @@ bool wxSound::LoadWAV(const wxUint8 *data, size_t length, bool copyData) else m_data->m_dataWithHeader = (wxUint8*)data; - m_data->m_data = + m_data->m_data = (&m_data->m_dataWithHeader[FMT_INDEX + waveformat.uiSize + 8]); return true;