diff options
author | Joerg Mueller <nexyon@gmail.com> | 2009-08-10 01:16:39 +0400 |
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committer | Joerg Mueller <nexyon@gmail.com> | 2009-08-10 01:16:39 +0400 |
commit | 6c5c58e05799f2b593cd81fcff57e6ef72ad57fb (patch) | |
tree | 8add929ef94d03fc69aecce6ef2baf283505782f /intern/audaspace/ffmpeg/AUD_FFMPEGReader.h | |
parent | c1ca2ab5dceb8d5355215a3c7a80b171f394e487 (diff) |
2.5: Sound branch merge!
See mailing list for additional information.
Diffstat (limited to 'intern/audaspace/ffmpeg/AUD_FFMPEGReader.h')
-rw-r--r-- | intern/audaspace/ffmpeg/AUD_FFMPEGReader.h | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/intern/audaspace/ffmpeg/AUD_FFMPEGReader.h b/intern/audaspace/ffmpeg/AUD_FFMPEGReader.h new file mode 100644 index 00000000000..645f5f356f0 --- /dev/null +++ b/intern/audaspace/ffmpeg/AUD_FFMPEGReader.h @@ -0,0 +1,133 @@ +/* + * $Id$ + * + * ***** 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 ***** + */ + +#ifndef AUD_FFMPEGREADER +#define AUD_FFMPEGREADER + +#include "AUD_IReader.h" +class AUD_Buffer; +struct AVCodecContext; +extern "C" { +#include <libavformat/avformat.h> +} + +/** + * This class reads a sound file via ffmpeg. + * \warning Seeking may not be accurate! Moreover the position is updated after + * a buffer reading call. So calling getPosition right after seek + * normally results in a wrong value. + * \warning Playback of an ogg with some outdated ffmpeg versions results in a + * segfault on windows. + */ +class AUD_FFMPEGReader : public AUD_IReader +{ +private: + /** + * The current position in samples. + */ + int m_position; + + /** + * The playback buffer. + */ + AUD_Buffer *m_buffer; + + /** + * The specification of the audio data. + */ + AUD_Specs m_specs; + + /** + * The buffer for package reading. + */ + AUD_Buffer *m_pkgbuf; + + /** + * The count of samples still available from the last read package. + */ + int m_pkgbuf_left; + + /** + * The AVFormatContext structure for using ffmpeg. + */ + AVFormatContext* m_formatCtx; + + /** + * The AVCodecContext structure for using ffmpeg. + */ + AVCodecContext* m_codecCtx; + + /** + * The ByteIOContext to read the data from. + */ + ByteIOContext* m_byteiocontext; + + /** + * The stream ID in the file. + */ + int m_stream; + + /** + * Decodes a packet into the given buffer. + * \param packet The AVPacket to decode. + * \param buffer The target buffer. + * \return The count of read bytes. + */ + int decode(AVPacket* packet, AUD_Buffer* buffer); + +public: + /** + * Creates a new reader. + * \param filename The path to the file to be read. + * \exception AUD_Exception Thrown if the file specified does not exist or + * cannot be read with ffmpeg. + */ + AUD_FFMPEGReader(const char* filename); + + /** + * Creates a new reader. + * \param buffer The buffer to read from. + * \param size The size of the buffer. + * \exception AUD_Exception Thrown if the buffer specified cannot be read + * with ffmpeg. + */ + AUD_FFMPEGReader(unsigned char* buffer, int size); + + /** + * Destroys the reader and closes the file. + */ + virtual ~AUD_FFMPEGReader(); + + virtual bool isSeekable(); + virtual void seek(int position); + virtual int getLength(); + virtual int getPosition(); + virtual AUD_Specs getSpecs(); + virtual AUD_ReaderType getType(); + virtual bool notify(AUD_Message &message); + virtual void read(int & length, sample_t* & buffer); +}; + +#endif //AUD_FFMPEGREADER |