| 1 | /* |
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| 2 | * Hydrogen |
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| 3 | * Copyright(c) 2002-2008 by Alex >Comix< Cominu [comix@users.sourceforge.net] |
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| 4 | * |
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| 5 | * http://www.hydrogen-music.org |
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| 6 | * |
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| 7 | * This program is free software; you can redistribute it and/or modify |
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| 8 | * it under the terms of the GNU General Public License as published by |
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| 9 | * the Free Software Foundation; either version 2 of the License, or |
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| 10 | * (at your option) any later version. |
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| 11 | * |
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| 12 | * This program is distributed in the hope that it will be useful, |
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| 13 | * but WITHOUT ANY WARRANTY, without even the implied warranty of |
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 15 | * GNU General Public License for more details. |
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| 16 | * |
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| 17 | * You should have received a copy of the GNU General Public License |
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| 18 | * along with this program; if not, write to the Free Software |
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| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 20 | * |
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| 21 | */ |
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| 22 | #ifndef H2CORE_ALSA_AUDIO_DRIVER_H |
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| 23 | #define H2CORE_ALSA_AUDIO_DRIVER_H |
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| 24 | |
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| 25 | #include <hydrogen/IO/AudioOutput.h> |
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| 26 | #include <hydrogen/IO/NullDriver.h> |
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| 27 | |
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| 28 | #ifdef ALSA_SUPPORT |
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| 29 | |
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| 30 | #include <inttypes.h> |
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| 31 | #include <alsa/asoundlib.h> |
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| 32 | |
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| 33 | namespace H2Core |
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| 34 | { |
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| 35 | |
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| 36 | typedef int ( *audioProcessCallback )( uint32_t, void * ); |
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| 37 | |
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| 38 | class AlsaAudioDriver : public AudioOutput |
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| 39 | { |
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| 40 | public: |
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| 41 | snd_pcm_t *m_pPlayback_handle; |
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| 42 | bool m_bIsRunning; |
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| 43 | unsigned long m_nBufferSize; |
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| 44 | float* m_pOut_L; |
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| 45 | float* m_pOut_R; |
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| 46 | int m_nXRuns; |
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| 47 | QString m_sAlsaAudioDevice; |
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| 48 | audioProcessCallback m_processCallback; |
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| 49 | |
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| 50 | AlsaAudioDriver( audioProcessCallback processCallback ); |
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| 51 | ~AlsaAudioDriver(); |
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| 52 | |
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| 53 | virtual int init( unsigned nBufferSize ); |
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| 54 | virtual int connect(); |
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| 55 | virtual void disconnect(); |
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| 56 | virtual unsigned getBufferSize(); |
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| 57 | virtual unsigned getSampleRate(); |
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| 58 | virtual float* getOut_L(); |
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| 59 | virtual float* getOut_R(); |
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| 60 | |
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| 61 | private: |
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| 62 | unsigned int m_nSampleRate; |
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| 63 | }; |
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| 64 | |
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| 65 | #else |
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| 66 | |
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| 67 | namespace H2Core { |
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| 68 | |
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| 69 | class AlsaAudioDriver : public NullDriver |
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| 70 | { |
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| 71 | public: |
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| 72 | AlsaAudioDriver( audioProcessCallback processCallback ) : NullDriver( processCallback ) {} |
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| 73 | |
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| 74 | }; |
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| 75 | |
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| 76 | #endif // ALSA_SUPPORT |
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| 77 | |
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| 78 | }; |
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| 79 | |
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| 80 | #endif // H2CORE_ALSA_AUDIO_DRIVER_H |
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