Joerg Mueller
986267300b
Deleting the old internal audaspace. Major changes from there are: - The whole library was refactored to use C++11. - Many stability and performance improvements. - Major Python API refactor: - Most requested: Play self generated sounds using numpy arrays. - For games: Sound list, random sounds and dynamic music. - Writing sounds to files. - Sequencing API. - Opening sound devices, eg. Jack. - Ability to choose different OpenAL devices in the user settings.
162 lines
3.6 KiB
C++
162 lines
3.6 KiB
C++
/*******************************************************************************
|
|
* Copyright 2009-2016 Jörg Müller
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
******************************************************************************/
|
|
|
|
#include "SndFileReader.h"
|
|
#include "util/Buffer.h"
|
|
#include "Exception.h"
|
|
|
|
#include <cstring>
|
|
|
|
AUD_NAMESPACE_BEGIN
|
|
|
|
sf_count_t SndFileReader::vio_get_filelen(void* user_data)
|
|
{
|
|
SndFileReader* reader = (SndFileReader*)user_data;
|
|
return reader->m_membuffer->getSize();
|
|
}
|
|
|
|
sf_count_t SndFileReader::vio_seek(sf_count_t offset, int whence,
|
|
void* user_data)
|
|
{
|
|
SndFileReader* reader = (SndFileReader*)user_data;
|
|
|
|
switch(whence)
|
|
{
|
|
case SEEK_SET:
|
|
reader->m_memoffset = offset;
|
|
break;
|
|
case SEEK_CUR:
|
|
reader->m_memoffset = reader->m_memoffset + offset;
|
|
break;
|
|
case SEEK_END:
|
|
reader->m_memoffset = reader->m_membuffer->getSize() + offset;
|
|
break;
|
|
}
|
|
|
|
return reader->m_memoffset;
|
|
}
|
|
|
|
sf_count_t SndFileReader::vio_read(void* ptr, sf_count_t count,
|
|
void* user_data)
|
|
{
|
|
SndFileReader* reader = (SndFileReader*)user_data;
|
|
|
|
if(reader->m_memoffset + count > reader->m_membuffer->getSize())
|
|
count = reader->m_membuffer->getSize() - reader->m_memoffset;
|
|
|
|
std::memcpy(ptr, ((data_t*)reader->m_membuffer->getBuffer()) +
|
|
reader->m_memoffset, count);
|
|
reader->m_memoffset += count;
|
|
|
|
return count;
|
|
}
|
|
|
|
sf_count_t SndFileReader::vio_tell(void* user_data)
|
|
{
|
|
SndFileReader* reader = (SndFileReader*)user_data;
|
|
|
|
return reader->m_memoffset;
|
|
}
|
|
|
|
SndFileReader::SndFileReader(std::string filename) :
|
|
m_position(0)
|
|
{
|
|
SF_INFO sfinfo;
|
|
|
|
sfinfo.format = 0;
|
|
m_sndfile = sf_open(filename.c_str(), SFM_READ, &sfinfo);
|
|
|
|
if(!m_sndfile)
|
|
AUD_THROW(FileException, "The file couldn't be opened with libsndfile.");
|
|
|
|
m_specs.channels = (Channels) sfinfo.channels;
|
|
m_specs.rate = (SampleRate) sfinfo.samplerate;
|
|
m_length = sfinfo.frames;
|
|
m_seekable = sfinfo.seekable;
|
|
}
|
|
|
|
SndFileReader::SndFileReader(std::shared_ptr<Buffer> buffer) :
|
|
m_position(0),
|
|
m_membuffer(buffer),
|
|
m_memoffset(0)
|
|
{
|
|
m_vio.get_filelen = vio_get_filelen;
|
|
m_vio.read = vio_read;
|
|
m_vio.seek = vio_seek;
|
|
m_vio.tell = vio_tell;
|
|
m_vio.write = nullptr;
|
|
|
|
SF_INFO sfinfo;
|
|
|
|
sfinfo.format = 0;
|
|
m_sndfile = sf_open_virtual(&m_vio, SFM_READ, &sfinfo, this);
|
|
|
|
if(!m_sndfile)
|
|
AUD_THROW(FileException, "The buffer couldn't be read with libsndfile.");
|
|
|
|
m_specs.channels = (Channels) sfinfo.channels;
|
|
m_specs.rate = (SampleRate) sfinfo.samplerate;
|
|
m_length = sfinfo.frames;
|
|
m_seekable = sfinfo.seekable;
|
|
}
|
|
|
|
SndFileReader::~SndFileReader()
|
|
{
|
|
sf_close(m_sndfile);
|
|
}
|
|
|
|
bool SndFileReader::isSeekable() const
|
|
{
|
|
return m_seekable;
|
|
}
|
|
|
|
void SndFileReader::seek(int position)
|
|
{
|
|
if(m_seekable)
|
|
{
|
|
position = sf_seek(m_sndfile, position, SEEK_SET);
|
|
m_position = position;
|
|
}
|
|
}
|
|
|
|
int SndFileReader::getLength() const
|
|
{
|
|
return m_length;
|
|
}
|
|
|
|
int SndFileReader::getPosition() const
|
|
{
|
|
return m_position;
|
|
}
|
|
|
|
Specs SndFileReader::getSpecs() const
|
|
{
|
|
return m_specs;
|
|
}
|
|
|
|
void SndFileReader::read(int& length, bool& eos, sample_t* buffer)
|
|
{
|
|
int olen = length;
|
|
|
|
length = sf_readf_float(m_sndfile, buffer, length);
|
|
|
|
m_position += length;
|
|
|
|
eos = length < olen;
|
|
}
|
|
|
|
AUD_NAMESPACE_END
|