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extern/audaspace/src/util/StreamBuffer.cpp
- This file was added.
| /******************************************************************************* | |||||
| * 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 "util/StreamBuffer.h" | |||||
| #include "util/BufferReader.h" | |||||
| #include "util/Buffer.h" | |||||
| // 5 sec * 48000 samples/sec * 4 bytes/sample * 6 channels | |||||
| #define BUFFER_RESIZE_BYTES 5760000 | |||||
| AUD_NAMESPACE_BEGIN | |||||
| StreamBuffer::StreamBuffer(std::shared_ptr<ISound> sound) : | |||||
| m_buffer(new Buffer()) | |||||
| { | |||||
| std::shared_ptr<IReader> reader = sound->createReader(); | |||||
| m_specs = reader->getSpecs(); | |||||
| int sample_size = AUD_SAMPLE_SIZE(m_specs); | |||||
| int length; | |||||
| int index = 0; | |||||
| bool eos = false; | |||||
| // get an approximated size if possible | |||||
| int size = reader->getLength(); | |||||
| if(size <= 0) | |||||
| size = BUFFER_RESIZE_BYTES / sample_size; | |||||
| else | |||||
| size += m_specs.rate; | |||||
| // as long as the end of the stream is not reached | |||||
| while(!eos) | |||||
| { | |||||
| // increase | |||||
| m_buffer->resize(size*sample_size, true); | |||||
| // read more | |||||
| length = size-index; | |||||
| reader->read(length, eos, m_buffer->getBuffer() + index * m_specs.channels); | |||||
| if(index == m_buffer->getSize() / sample_size) | |||||
| size += BUFFER_RESIZE_BYTES / sample_size; | |||||
| index += length; | |||||
| } | |||||
| m_buffer->resize(index * sample_size, true); | |||||
| } | |||||
| StreamBuffer::StreamBuffer(std::shared_ptr<Buffer> buffer, Specs specs) : | |||||
| m_buffer(buffer), m_specs(specs) | |||||
| { | |||||
| } | |||||
| std::shared_ptr<Buffer> StreamBuffer::getBuffer() | |||||
| { | |||||
| return m_buffer; | |||||
| } | |||||
| Specs StreamBuffer::getSpecs() | |||||
| { | |||||
| return m_specs; | |||||
| } | |||||
| std::shared_ptr<IReader> StreamBuffer::createReader() | |||||
| { | |||||
| return std::shared_ptr<IReader>(new BufferReader(m_buffer, m_specs)); | |||||
| } | |||||
| AUD_NAMESPACE_END | |||||