diff options
Diffstat (limited to 'intern/audaspace/FX/AUD_VolumeReader.cpp')
-rw-r--r-- | intern/audaspace/FX/AUD_VolumeReader.cpp | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/intern/audaspace/FX/AUD_VolumeReader.cpp b/intern/audaspace/FX/AUD_VolumeReader.cpp new file mode 100644 index 00000000000..fc3f20152a6 --- /dev/null +++ b/intern/audaspace/FX/AUD_VolumeReader.cpp @@ -0,0 +1,97 @@ +/* + * $Id$ + * + * ***** BEGIN LGPL LICENSE BLOCK ***** + * + * Copyright 2009 Jörg Hermann Müller + * + * This file is part of AudaSpace. + * + * AudaSpace is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * AudaSpace is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with AudaSpace. If not, see <http://www.gnu.org/licenses/>. + * + * ***** END LGPL LICENSE BLOCK ***** + */ + +#include "AUD_VolumeReader.h" +#include "AUD_Buffer.h" + +#include <cstring> + +AUD_VolumeReader::AUD_VolumeReader(AUD_IReader* reader, float volume) : + AUD_EffectReader(reader), + m_volume(volume) +{ + int bigendian = 1; + bigendian = (((char*)&bigendian)[0]) ? 0: 1; // 1 if Big Endian + + switch(m_reader->getSpecs().format) + { + case AUD_FORMAT_S16: + m_adjust = AUD_volume_adjust<int16_t>; + break; + case AUD_FORMAT_S32: + m_adjust = AUD_volume_adjust<int32_t>; + break; + case AUD_FORMAT_FLOAT32: + m_adjust = AUD_volume_adjust<float>; + break; + case AUD_FORMAT_FLOAT64: + m_adjust = AUD_volume_adjust<double>; + break; + case AUD_FORMAT_U8: + m_adjust = AUD_volume_adjust_u8; + break; + case AUD_FORMAT_S24: + m_adjust = bigendian ? AUD_volume_adjust_s24_be : + AUD_volume_adjust_s24_le; + break; + default: + delete m_reader; + AUD_THROW(AUD_ERROR_READER); + } + + m_buffer = new AUD_Buffer(); AUD_NEW("buffer") +} + +AUD_VolumeReader::~AUD_VolumeReader() +{ + delete m_buffer; AUD_DELETE("buffer") +} + +bool AUD_VolumeReader::notify(AUD_Message &message) +{ + if(message.type == AUD_MSG_VOLUME) + { + m_volume = message.volume; + + m_reader->notify(message); + + return true; + } + return m_reader->notify(message); +} + +void AUD_VolumeReader::read(int & length, sample_t* & buffer) +{ + sample_t* buf; + AUD_Specs specs = m_reader->getSpecs(); + + m_reader->read(length, buf); + if(m_buffer->getSize() < length*AUD_SAMPLE_SIZE(specs)) + m_buffer->resize(length*AUD_SAMPLE_SIZE(specs)); + + buffer = m_buffer->getBuffer(); + + m_adjust(buffer, buf, length * specs.channels, m_volume); +} |