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audio: basic support for multi backend audio

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Audio functions no longer access glob_audio_state, instead they get an
AudioState as a parameter.  This is required in order to support
multiple backends.

glob_audio_state is also gone, and replaced with a tailq so we can store
more than one states.

Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Message-id: 67aef54f9e729a7160fe95c465351115e392164b.1566168923.git.DirtY.iCE.hu@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Kővágó, Zoltán 2019-08-19 01:06:47 +02:00 • committed by Gerd Hoffmann
parent 526fb0581e
commit ecd97e9592
7 changed files with 95 additions and 33 deletions
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12
audio/audio.h
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@ -78,8 +78,10 @@ typedef struct SWVoiceOut SWVoiceOut;
typedef struct CaptureVoiceOut CaptureVoiceOut;
typedef struct SWVoiceIn SWVoiceIn;
typedef struct AudioState AudioState;
typedef struct QEMUSoundCard {
char *name;
AudioState *state;
QLIST_ENTRY (QEMUSoundCard) entries;
} QEMUSoundCard;
@ -92,7 +94,8 @@ void AUD_log (const char *cap, const char *fmt, ...) GCC_FMT_ATTR(2, 3);
void AUD_register_card (const char *name, QEMUSoundCard *card);
void AUD_remove_card (QEMUSoundCard *card);
CaptureVoiceOut *AUD_add_capture (
CaptureVoiceOut *AUD_add_capture(
AudioState *s,
struct audsettings *as,
struct audio_capture_ops *ops,
void *opaque
@ -160,8 +163,8 @@ static inline void *advance (void *p, int incr)
#define audio_MAX(a, b) ((a)<(b)?(b):(a))
#endif
int wav_start_capture (CaptureState *s, const char *path, int freq,
int bits, int nchannels);
int wav_start_capture(AudioState *state, CaptureState *s, const char *path,
int freq, int bits, int nchannels);
bool audio_is_cleaning_up(void);
void audio_cleanup(void);
@ -175,4 +178,7 @@ void audio_parse_option(const char *opt);
void audio_init_audiodevs(void);
void audio_legacy_help(void);
AudioState *audio_state_by_name(const char *name);
const char *audio_get_id(QEMUSoundCard *card);
#endif /* QEMU_AUDIO_H */