diff options
Diffstat (limited to 'src/gui/embedded/qsoundqss_qws.cpp')
| -rw-r--r-- | src/gui/embedded/qsoundqss_qws.cpp | 40 |
1 files changed, 33 insertions, 7 deletions
diff --git a/src/gui/embedded/qsoundqss_qws.cpp b/src/gui/embedded/qsoundqss_qws.cpp index c72ea91..283bbd3 100644 --- a/src/gui/embedded/qsoundqss_qws.cpp +++ b/src/gui/embedded/qsoundqss_qws.cpp @@ -52,6 +52,7 @@ #include <qalgorithms.h> #include <qtimer.h> #include <qpointer.h> +#include <qendian.h> #include <unistd.h> #include <stdlib.h> @@ -335,7 +336,13 @@ public: virtual int readySamples(int) = 0; int getSample(int off, int bps) { - return (bps == 1) ? (data[out+off] - 128) * 128 : ((short*)data)[(out/2)+off]; + + // + // 16-bit audio data is converted to native endian so that it can be scaled + // Yes, this is ugly on a BigEndian machine + // Perhaps it shouldn't be scaled at all + // + return (bps == 1) ? (data[out+off] - 128) * 128 : qToLittleEndian(((short*)data)[(out/2)+off]); } int add(int* mixl, int* mixr, int count) @@ -547,7 +554,7 @@ public: wavedata_remaining = 0; mFinishedRead = true; } else if ( qstrncmp(chunk.id,"data",4) == 0 ) { - wavedata_remaining = chunk.size; + wavedata_remaining = qToLittleEndian( chunk.size ); //out = max = sound_buffer_size; @@ -572,10 +579,23 @@ public: //qDebug("couldn't ready chunkdata"); mFinishedRead = true; } + #define WAVE_FORMAT_PCM 1 - else if ( chunkdata.formatTag != WAVE_FORMAT_PCM ) { - //qDebug("WAV file: UNSUPPORTED FORMAT %d",chunkdata.formatTag); - mFinishedRead = true; + else + { + /* + ** Endian Fix the chuck data + */ + chunkdata.formatTag = qToLittleEndian( chunkdata.formatTag ); + chunkdata.channels = qToLittleEndian( chunkdata.channels ); + chunkdata.samplesPerSec = qToLittleEndian( chunkdata.samplesPerSec ); + chunkdata.avgBytesPerSec = qToLittleEndian( chunkdata.avgBytesPerSec ); + chunkdata.blockAlign = qToLittleEndian( chunkdata.blockAlign ); + chunkdata.wBitsPerSample = qToLittleEndian( chunkdata.wBitsPerSample ); + if ( chunkdata.formatTag != WAVE_FORMAT_PCM ) { + qWarning("WAV file: UNSUPPORTED FORMAT %d",chunkdata.formatTag); + mFinishedRead = true; + } } } else { // ignored chunk @@ -1166,9 +1186,15 @@ bool QWSSoundServerPrivate::openDevice() if (ioctl(fd, SNDCTL_DSP_SETFRAGMENT, &v)) qWarning("Could not set fragments to %08x",v); #ifdef QT_QWS_SOUND_16BIT - v=AFMT_S16_LE; if (ioctl(fd, SNDCTL_DSP_SETFMT, &v)) + // + // Use native endian + // Since we have manipulated the data volume the data + // is now in native format, even though its stored + // as little endian in the WAV file + // + v=AFMT_S16_NE; if (ioctl(fd, SNDCTL_DSP_SETFMT, &v)) qWarning("Could not set format %d",v); - if (AFMT_S16_LE != v) + if (AFMT_S16_NE != v) qDebug("Want format %d got %d", AFMT_S16_LE, v); #else v=AFMT_U8; if (ioctl(fd, SNDCTL_DSP_SETFMT, &v)) |