/* * QEMU Audio subsystem header * * Copyright (c) 2003-2004 Vassili Karpov (malc) * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #ifndef QEMU_AUDIO_H #define QEMU_AUDIO_H #include "mixeng.h" #define dolog(...) fprintf (stderr, AUDIO_CAP ": " __VA_ARGS__) #ifdef DEBUG #define ldebug(...) dolog (__VA_ARGS__) #else #define ldebug(...) #endif typedef enum { AUD_FMT_U8, AUD_FMT_S8, AUD_FMT_U16, AUD_FMT_S16 } audfmt_e; typedef struct HWVoice HWVoice; struct audio_output_driver; typedef struct AudioState { int fixed_format; int fixed_freq; int fixed_channels; int fixed_fmt; int nb_hw_voices; int voice_size; int64_t ticks_threshold; int freq_threshold; void *opaque; struct audio_output_driver *drv; } AudioState; extern AudioState audio_state; typedef struct SWVoice { int freq; audfmt_e fmt; int nchannels; int shift; int align; t_sample *conv; int left; int pos; int bytes_per_second; int64_t ratio; st_sample_t *buf; void *rate; int wpos; int live; int active; int64_t old_ticks; HWVoice *hw; char *name; } SWVoice; #define VOICE_ENABLE 1 #define VOICE_DISABLE 2 struct pcm_ops { int (*init) (HWVoice *hw, int freq, int nchannels, audfmt_e fmt); void (*fini) (HWVoice *hw); void (*run) (HWVoice *hw); int (*write) (SWVoice *sw, void *buf, int size); int (*ctl) (HWVoice *hw, int cmd, ...); }; struct audio_output_driver { const char *name; void *(*init) (void); void (*fini) (void *); struct pcm_ops *pcm_ops; int can_be_default; int max_voices; int voice_size; }; struct HWVoice { int active; int enabled; int pending_disable; int valid; int freq; f_sample *clip; audfmt_e fmt; int nchannels; int align; int shift; int rpos; int bufsize; int bytes_per_second; st_sample_t *mix_buf; int samples; int64_t old_ticks; int nb_voices; struct SWVoice **pvoice; struct pcm_ops *pcm_ops; }; void audio_log (const char *fmt, ...); void pcm_sw_free_resources (SWVoice *sw); int pcm_sw_alloc_resources (SWVoice *sw); void pcm_sw_fini (SWVoice *sw); int pcm_sw_init (SWVoice *sw, HWVoice *hw, int freq, int nchannels, audfmt_e fmt); void pcm_hw_clear (HWVoice *hw, void *buf, int len); HWVoice * pcm_hw_find_any (HWVoice *hw); HWVoice * pcm_hw_find_any_active (HWVoice *hw); HWVoice * pcm_hw_find_any_passive (HWVoice *hw); HWVoice * pcm_hw_find_specific (HWVoice *hw, int freq, int nchannels, audfmt_e fmt); HWVoice * pcm_hw_add (int freq, int nchannels, audfmt_e fmt); int pcm_hw_add_sw (HWVoice *hw, SWVoice *sw); int pcm_hw_del_sw (HWVoice *hw, SWVoice *sw); SWVoice * pcm_create_voice_pair (int freq, int nchannels, audfmt_e fmt); void pcm_hw_free_resources (HWVoice *hw); int pcm_hw_alloc_resources (HWVoice *hw); void pcm_hw_fini (HWVoice *hw); void pcm_hw_gc (HWVoice *hw); int pcm_hw_get_live (HWVoice *hw); int pcm_hw_get_live2 (HWVoice *hw, int *nb_active); void pcm_hw_dec_live (HWVoice *hw, int decr); int pcm_hw_write (SWVoice *sw, void *buf, int len); int audio_get_conf_int (const char *key, int defval); const char *audio_get_conf_str (const char *key, const char *defval); /* Public API */ SWVoice * AUD_open (SWVoice *sw, const char *name, int freq, int nchannels, audfmt_e fmt); int AUD_write (SWVoice *sw, void *pcm_buf, int size); void AUD_adjust (SWVoice *sw, int leftover); void AUD_reset (SWVoice *sw); int AUD_get_free (SWVoice *sw); int AUD_get_buffer_size (SWVoice *sw); void AUD_run (void); void AUD_enable (SWVoice *sw, int on); int AUD_calc_elapsed (SWVoice *sw); static inline void *advance (void *p, int incr) { uint8_t *d = p; return (d + incr); } uint32_t popcount (uint32_t u); inline uint32_t lsbindex (uint32_t u); #define audio_MIN(a, b) ((a)>(b)?(b):(a)) #define audio_MAX(a, b) ((a)<(b)?(b):(a)) #endif /* audio.h */