c2d3d1c294
This commit adds a new audiodev backend to allow QEMU to use Pipewire as both an audio sink and source. This backend is available on most systems Add Pipewire entry points for QEMU Pipewire audio backend Add wrappers for QEMU Pipewire audio backend in qpw_pcm_ops() qpw_write function returns the current state of the stream to pwaudio and Writes some data to the server for playback streams using pipewire spa_ringbuffer implementation. qpw_read function returns the current state of the stream to pwaudio and reads some data from the server for capture streams using pipewire spa_ringbuffer implementation. These functions qpw_write and qpw_read are called during playback and capture. Added some functions that convert pw audio formats to QEMU audio format and vice versa which would be needed in the pipewire audio sink and source functions qpw_init_in() & qpw_init_out(). These methods that implement playback and recording will create streams for playback and capture that will start processing and will result in the on_process callbacks to be called. Built a connection to the Pipewire sound system server in the qpw_audio_init() method. Signed-off-by: Dorinda Bassey <dbassey@redhat.com> Reviewed-by: Volker Rümelin <vr_qemu@t-online.de> Message-Id: <20230417105654.32328-1-dbassey@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
33 lines
1.3 KiB
Plaintext
33 lines
1.3 KiB
Plaintext
# See docs/devel/tracing.rst for syntax documentation.
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# alsaaudio.c
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alsa_revents(int revents) "revents = %d"
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alsa_pollout(int i, int fd) "i = %d fd = %d"
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alsa_set_handler(int events, int index, int fd, int err) "events=0x%x index=%d fd=%d err=%d"
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alsa_wrote_zero(int len) "Failed to write %d frames (wrote zero)"
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alsa_read_zero(long len) "Failed to read %ld frames (read zero)"
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alsa_xrun_out(void) "Recovering from playback xrun"
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alsa_xrun_in(void) "Recovering from capture xrun"
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alsa_resume_out(void) "Resuming suspended output stream"
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# ossaudio.c
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oss_version(int version) "OSS version = 0x%x"
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# dbusaudio.c
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dbus_audio_register(const char *s, const char *dir) "sender = %s, dir = %s"
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dbus_audio_put_buffer_out(size_t len) "len = %zu"
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dbus_audio_read(size_t len) "len = %zu"
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# pwaudio.c
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pw_state_changed(int nodeid, const char *s) "node id: %d stream state: %s"
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pw_read(int32_t avail, uint32_t index, size_t len) "avail=%d index=%u len=%zu"
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pw_write(int32_t filled, int32_t avail, uint32_t index, size_t len) "filled=%d avail=%d index=%u len=%zu"
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pw_vol(const char *ret) "set volume: %s"
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pw_period(uint64_t quantum, uint32_t rate) "period =%" PRIu64 "/%u"
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pw_audio_init(void) "Initialize Pipewire context"
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# audio.c
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audio_timer_start(int interval) "interval %d ms"
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audio_timer_stop(void) ""
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audio_timer_delayed(int interval) "interval %d ms"
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