int SoundSampleGetData(const char *file, SoundSampleData * ssd) { AFfilehandle in_file; int in_format, in_width, bytes_per_frame, frame_count; int frames_read; in_file = afOpenFile(file, "r", NULL); if (!in_file) return -1; frame_count = afGetFrameCount(in_file, AF_DEFAULT_TRACK); ssd->channels = afGetChannels(in_file, AF_DEFAULT_TRACK); ssd->rate = (unsigned int)(afGetRate(in_file, AF_DEFAULT_TRACK) + .5); afGetSampleFormat(in_file, AF_DEFAULT_TRACK, &in_format, &in_width); ssd->bit_per_sample = in_width; #ifdef WORDS_BIGENDIAN afSetVirtualByteOrder(in_file, AF_DEFAULT_TRACK, AF_BYTEORDER_BIGENDIAN); #else afSetVirtualByteOrder(in_file, AF_DEFAULT_TRACK, AF_BYTEORDER_LITTLEENDIAN); #endif if (EDebug(EDBUG_TYPE_SOUND)) Eprintf("SoundSampleGetData chan=%d width=%d rate=%d\n", ssd->channels, ssd->bit_per_sample, ssd->rate); bytes_per_frame = (ssd->bit_per_sample * ssd->channels) / 8; ssd->size = frame_count * bytes_per_frame; ssd->data = EMALLOC(unsigned char, ssd->size); frames_read = afReadFrames(in_file, AF_DEFAULT_TRACK, ssd->data, frame_count); afCloseFile(in_file); if (frames_read <= 0) { ssd->size = 0; _EFREE(ssd->data); return -1; } return 0; }
//*************************************************************************** bool Kwave::AudiofileDecoder::open(QWidget *widget, QIODevice &src) { metaData().clear(); Q_ASSERT(!m_source); if (m_source) qWarning("AudiofileDecoder::open(), already open !"); // try to open the source if (!src.open(QIODevice::ReadOnly)) { qWarning("AudiofileDecoder::open(), failed to open source !"); return false; } // source successfully opened m_source = &src; m_src_adapter = new Kwave::VirtualAudioFile(*m_source); Q_ASSERT(m_src_adapter); if (!m_src_adapter) return false; m_src_adapter->open(m_src_adapter, 0); AFfilehandle fh = m_src_adapter->handle(); if (!fh || (m_src_adapter->lastError() >= 0)) { QString reason; switch (m_src_adapter->lastError()) { case AF_BAD_NOT_IMPLEMENTED: reason = i18n("Format or function is not implemented"); break; case AF_BAD_MALLOC: reason = i18n("Out of memory"); break; case AF_BAD_HEADER: reason = i18n("File header is damaged"); break; case AF_BAD_CODEC_TYPE: reason = i18n("Invalid codec type"); break; case AF_BAD_OPEN: reason = i18n("Opening the file failed"); break; case AF_BAD_READ: reason = i18n("Read access failed"); break; case AF_BAD_SAMPFMT: reason = i18n("Invalid sample format"); break; default: reason = reason.number(m_src_adapter->lastError()); } QString text= i18n("An error occurred while opening the "\ "file:\n'%1'", reason); Kwave::MessageBox::error(widget, text); return false; } AFframecount length = afGetFrameCount(fh, AF_DEFAULT_TRACK); unsigned int tracks = qMax(afGetVirtualChannels(fh, AF_DEFAULT_TRACK), 0); unsigned int bits = 0; double rate = 0.0; int af_sample_format; afGetVirtualSampleFormat(fh, AF_DEFAULT_TRACK, &af_sample_format, reinterpret_cast<int *>(&bits)); Kwave::SampleFormat::Format fmt; switch (af_sample_format) { case AF_SAMPFMT_TWOSCOMP: fmt = Kwave::SampleFormat::Signed; break; case AF_SAMPFMT_UNSIGNED: fmt = Kwave::SampleFormat::Unsigned; break; case AF_SAMPFMT_FLOAT: fmt = Kwave::SampleFormat::Float; break; case AF_SAMPFMT_DOUBLE: fmt = Kwave::SampleFormat::Double; break; default: fmt = Kwave::SampleFormat::Unknown; break; } // get sample rate, with fallback to 8kHz rate = afGetRate(fh, AF_DEFAULT_TRACK); if (rate < 1.0) { qWarning("\n!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n"\ "WARNING: file has no sample rate!\n"\ " => using 8000 samples/sec as fallback\n"\ "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n"); rate = 8000.0; } Kwave::SampleFormat::Map sf; QString sample_format_name = sf.description(Kwave::SampleFormat(fmt), true); if (static_cast<signed int>(bits) < 0) bits = 0; int af_compression = afGetCompression(fh, AF_DEFAULT_TRACK); const Kwave::Compression compression( Kwave::Compression::fromAudiofile(af_compression) ); Kwave::FileInfo info(metaData()); info.setRate(rate); info.setBits(bits); info.setTracks(tracks); info.setLength(length); info.set(INF_SAMPLE_FORMAT, Kwave::SampleFormat(fmt).toInt()); info.set(Kwave::INF_COMPRESSION, compression.toInt()); metaData().replace(Kwave::MetaDataList(info)); qDebug("-------------------------"); qDebug("info:"); qDebug("compression = %d", af_compression); qDebug("channels = %d", info.tracks()); qDebug("rate = %0.0f", info.rate()); qDebug("bits/sample = %d", info.bits()); qDebug("length = %lu samples", static_cast<unsigned long int>(info.length())); qDebug("format = %d (%s)", af_sample_format, DBG(sample_format_name)); qDebug("-------------------------"); // set up libaudiofile to produce Kwave's internal sample format #if Q_BYTE_ORDER == Q_BIG_ENDIAN afSetVirtualByteOrder(fh, AF_DEFAULT_TRACK, AF_BYTEORDER_BIGENDIAN); #else afSetVirtualByteOrder(fh, AF_DEFAULT_TRACK, AF_BYTEORDER_LITTLEENDIAN); #endif afSetVirtualSampleFormat(fh, AF_DEFAULT_TRACK, AF_SAMPFMT_TWOSCOMP, SAMPLE_STORAGE_BITS); return true; }