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Diffstat (limited to 'extern/audaspace/plugins/libsndfile/SndFileReader.h')
-rw-r--r-- | extern/audaspace/plugins/libsndfile/SndFileReader.h | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/extern/audaspace/plugins/libsndfile/SndFileReader.h b/extern/audaspace/plugins/libsndfile/SndFileReader.h new file mode 100644 index 00000000000..081c29c686c --- /dev/null +++ b/extern/audaspace/plugins/libsndfile/SndFileReader.h @@ -0,0 +1,125 @@ +/******************************************************************************* + * 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. + ******************************************************************************/ + +#pragma once + +#include "IReader.h" + +#ifdef LIBSNDFILE_PLUGIN +#define AUD_BUILD_PLUGIN +#endif + +/** + * @file SndFileReader.h + * @ingroup plugin + * The SndFileReader class. + */ + +#include <string> +#include <sndfile.h> +#include <memory> + +AUD_NAMESPACE_BEGIN + +class Buffer; + +/** + * This class reads a sound file via libsndfile. + */ +class AUD_PLUGIN_API SndFileReader : public IReader +{ +private: + /** + * The current position in samples. + */ + int m_position; + + /** + * The sample count in the file. + */ + int m_length; + + /** + * Whether the file is seekable. + */ + bool m_seekable; + + /** + * The specification of the audio data. + */ + Specs m_specs; + + /** + * The sndfile. + */ + SNDFILE* m_sndfile; + + /** + * The virtual IO structure for memory file reading. + */ + SF_VIRTUAL_IO m_vio; + + /** + * The pointer to the memory file. + */ + std::shared_ptr<Buffer> m_membuffer; + + /** + * The current reading pointer of the memory file. + */ + int m_memoffset; + + // Functions for libsndfile virtual IO functionality + AUD_LOCAL static sf_count_t vio_get_filelen(void* user_data); + AUD_LOCAL static sf_count_t vio_seek(sf_count_t offset, int whence, void* user_data); + AUD_LOCAL static sf_count_t vio_read(void* ptr, sf_count_t count, void* user_data); + AUD_LOCAL static sf_count_t vio_tell(void* user_data); + + // delete copy constructor and operator= + SndFileReader(const SndFileReader&) = delete; + SndFileReader& operator=(const SndFileReader&) = delete; + +public: + /** + * Creates a new reader. + * \param filename The path to the file to be read. + * \exception Exception Thrown if the file specified does not exist or + * cannot be read with libsndfile. + */ + SndFileReader(std::string filename); + + /** + * Creates a new reader. + * \param buffer The buffer to read from. + * \exception Exception Thrown if the buffer specified cannot be read + * with libsndfile. + */ + SndFileReader(std::shared_ptr<Buffer> buffer); + + /** + * Destroys the reader and closes the file. + */ + virtual ~SndFileReader(); + + virtual bool isSeekable() const; + virtual void seek(int position); + virtual int getLength() const; + virtual int getPosition() const; + virtual Specs getSpecs() const; + virtual void read(int& length, bool& eos, sample_t* buffer); +}; + +AUD_NAMESPACE_END |