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Diffstat (limited to 'audio/audio_int.h')
| -rw-r--r-- | audio/audio_int.h | 287 |
1 files changed, 287 insertions, 0 deletions
diff --git a/audio/audio_int.h b/audio/audio_int.h new file mode 100644 index 000000000..6d685e24a --- /dev/null +++ b/audio/audio_int.h @@ -0,0 +1,287 @@ +/* + * QEMU Audio subsystem header + * + * Copyright (c) 2003-2005 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_INT_H +#define QEMU_AUDIO_INT_H + +#ifdef CONFIG_AUDIO_COREAUDIO +#define FLOAT_MIXENG +/* #define RECIPROCAL */ +#endif +#include "mixeng.h" + +struct audio_pcm_ops; + +struct audio_callback { + void *opaque; + audio_callback_fn fn; +}; + +struct audio_pcm_info { + int bits; + bool is_signed; + bool is_float; + int freq; + int nchannels; + int bytes_per_frame; + int bytes_per_second; + int swap_endianness; +}; + +typedef struct AudioState AudioState; +typedef struct SWVoiceCap SWVoiceCap; + +typedef struct STSampleBuffer { + size_t pos, size; + st_sample samples[]; +} STSampleBuffer; + +typedef struct HWVoiceOut { + AudioState *s; + int enabled; + int poll_mode; + int pending_disable; + struct audio_pcm_info info; + + f_sample *clip; + uint64_t ts_helper; + + STSampleBuffer *mix_buf; + void *buf_emul; + size_t pos_emul, pending_emul, size_emul; + + size_t samples; + QLIST_HEAD (sw_out_listhead, SWVoiceOut) sw_head; + QLIST_HEAD (sw_cap_listhead, SWVoiceCap) cap_head; + struct audio_pcm_ops *pcm_ops; + QLIST_ENTRY (HWVoiceOut) entries; +} HWVoiceOut; + +typedef struct HWVoiceIn { + AudioState *s; + int enabled; + int poll_mode; + struct audio_pcm_info info; + + t_sample *conv; + + size_t total_samples_captured; + uint64_t ts_helper; + + STSampleBuffer *conv_buf; + void *buf_emul; + size_t pos_emul, pending_emul, size_emul; + + size_t samples; + QLIST_HEAD (sw_in_listhead, SWVoiceIn) sw_head; + struct audio_pcm_ops *pcm_ops; + QLIST_ENTRY (HWVoiceIn) entries; +} HWVoiceIn; + +struct SWVoiceOut { + QEMUSoundCard *card; + AudioState *s; + struct audio_pcm_info info; + t_sample *conv; + int64_t ratio; + struct st_sample *buf; + void *rate; + size_t total_hw_samples_mixed; + int active; + int empty; + HWVoiceOut *hw; + char *name; + struct mixeng_volume vol; + struct audio_callback callback; + QLIST_ENTRY (SWVoiceOut) entries; +}; + +struct SWVoiceIn { + QEMUSoundCard *card; + AudioState *s; + int active; + struct audio_pcm_info info; + int64_t ratio; + void *rate; + size_t total_hw_samples_acquired; + struct st_sample *buf; + f_sample *clip; + HWVoiceIn *hw; + char *name; + struct mixeng_volume vol; + struct audio_callback callback; + QLIST_ENTRY (SWVoiceIn) entries; +}; + +typedef struct audio_driver audio_driver; +struct audio_driver { + const char *name; + const char *descr; + void *(*init) (Audiodev *); + void (*fini) (void *); + struct audio_pcm_ops *pcm_ops; + int can_be_default; + int max_voices_out; + int max_voices_in; + int voice_size_out; + int voice_size_in; + QLIST_ENTRY(audio_driver) next; +}; + +struct audio_pcm_ops { + int (*init_out)(HWVoiceOut *hw, audsettings *as, void *drv_opaque); + void (*fini_out)(HWVoiceOut *hw); + size_t (*write) (HWVoiceOut *hw, void *buf, size_t size); + void (*run_buffer_out)(HWVoiceOut *hw); + /* + * get a buffer that after later can be passed to put_buffer_out; optional + * returns the buffer, and writes it's size to size (in bytes) + * this is unrelated to the above buffer_size_out function + */ + void *(*get_buffer_out)(HWVoiceOut *hw, size_t *size); + /* + * put back the buffer returned by get_buffer_out; optional + * buf must be equal the pointer returned by get_buffer_out, + * size may be smaller + */ + size_t (*put_buffer_out)(HWVoiceOut *hw, void *buf, size_t size); + void (*enable_out)(HWVoiceOut *hw, bool enable); + void (*volume_out)(HWVoiceOut *hw, Volume *vol); + + int (*init_in) (HWVoiceIn *hw, audsettings *as, void *drv_opaque); + void (*fini_in) (HWVoiceIn *hw); + size_t (*read) (HWVoiceIn *hw, void *buf, size_t size); + void (*run_buffer_in)(HWVoiceIn *hw); + void *(*get_buffer_in)(HWVoiceIn *hw, size_t *size); + void (*put_buffer_in)(HWVoiceIn *hw, void *buf, size_t size); + void (*enable_in)(HWVoiceIn *hw, bool enable); + void (*volume_in)(HWVoiceIn *hw, Volume *vol); +}; + +void audio_generic_run_buffer_in(HWVoiceIn *hw); +void *audio_generic_get_buffer_in(HWVoiceIn *hw, size_t *size); +void audio_generic_put_buffer_in(HWVoiceIn *hw, void *buf, size_t size); +void audio_generic_run_buffer_out(HWVoiceOut *hw); +void *audio_generic_get_buffer_out(HWVoiceOut *hw, size_t *size); +size_t audio_generic_put_buffer_out(HWVoiceOut *hw, void *buf, size_t size); +size_t audio_generic_write(HWVoiceOut *hw, void *buf, size_t size); +size_t audio_generic_read(HWVoiceIn *hw, void *buf, size_t size); + +struct capture_callback { + struct audio_capture_ops ops; + void *opaque; + QLIST_ENTRY (capture_callback) entries; +}; + +struct CaptureVoiceOut { + HWVoiceOut hw; + void *buf; + QLIST_HEAD (cb_listhead, capture_callback) cb_head; + QLIST_ENTRY (CaptureVoiceOut) entries; +}; + +struct SWVoiceCap { + SWVoiceOut sw; + CaptureVoiceOut *cap; + QLIST_ENTRY (SWVoiceCap) entries; +}; + +typedef struct AudioState { + struct audio_driver *drv; + Audiodev *dev; + void *drv_opaque; + + QEMUTimer *ts; + QLIST_HEAD (card_listhead, QEMUSoundCard) card_head; + QLIST_HEAD (hw_in_listhead, HWVoiceIn) hw_head_in; + QLIST_HEAD (hw_out_listhead, HWVoiceOut) hw_head_out; + QLIST_HEAD (cap_listhead, CaptureVoiceOut) cap_head; + int nb_hw_voices_out; + int nb_hw_voices_in; + int vm_running; + int64_t period_ticks; + + bool timer_running; + uint64_t timer_last; + + QTAILQ_ENTRY(AudioState) list; +} AudioState; + +extern const struct mixeng_volume nominal_volume; + +extern const char *audio_prio_list[]; + +void audio_driver_register(audio_driver *drv); +audio_driver *audio_driver_lookup(const char *name); + +void audio_pcm_init_info (struct audio_pcm_info *info, struct audsettings *as); +void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len); + +int audio_bug (const char *funcname, int cond); +void *audio_calloc (const char *funcname, int nmemb, size_t size); + +void audio_run(AudioState *s, const char *msg); + +const char *audio_application_name(void); + +typedef struct RateCtl { + int64_t start_ticks; + int64_t bytes_sent; +} RateCtl; + +void audio_rate_start(RateCtl *rate); +size_t audio_rate_get_bytes(struct audio_pcm_info *info, RateCtl *rate, + size_t bytes_avail); + +static inline size_t audio_ring_dist(size_t dst, size_t src, size_t len) +{ + return (dst >= src) ? (dst - src) : (len - src + dst); +} + +#define dolog(fmt, ...) AUD_log(AUDIO_CAP, fmt, ## __VA_ARGS__) + +#ifdef DEBUG +#define ldebug(fmt, ...) AUD_log(AUDIO_CAP, fmt, ## __VA_ARGS__) +#else +#define ldebug(fmt, ...) (void)0 +#endif + +#define AUDIO_STRINGIFY_(n) #n +#define AUDIO_STRINGIFY(n) AUDIO_STRINGIFY_(n) + +typedef struct AudiodevListEntry { + Audiodev *dev; + QSIMPLEQ_ENTRY(AudiodevListEntry) next; +} AudiodevListEntry; + +typedef QSIMPLEQ_HEAD(, AudiodevListEntry) AudiodevListHead; +AudiodevListHead audio_handle_legacy_opts(void); + +void audio_free_audiodev_list(AudiodevListHead *head); + +void audio_create_pdos(Audiodev *dev); +AudiodevPerDirectionOptions *audio_get_pdo_in(Audiodev *dev); +AudiodevPerDirectionOptions *audio_get_pdo_out(Audiodev *dev); + +#endif /* QEMU_AUDIO_INT_H */ |