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get latency skeleton

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See #2
This commit is contained in:
Andrew Kelley 2015-09-02 10:52:53 -07:00
parent 06dc7704a3
commit debab8e70f
9 changed files with 88 additions and 2 deletions
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15
soundio/soundio.h
View file

@ -1004,6 +1004,13 @@ SOUNDIO_EXPORT int soundio_outstream_clear_buffer(struct SoundIoOutStream *outst
/// device does not support pausing/unpausing.
SOUNDIO_EXPORT int soundio_outstream_pause(struct SoundIoOutStream *outstream, bool pause);
/// Obtain the total number of seconds that the next frame you write to the
/// outstream will take to become audible. This includes both software and
/// hardware latency.
///
/// This function must be called only from within SoundIoOutStream::write_callback.
SOUNDIO_EXPORT int soundio_outstream_get_latency(struct SoundIoOutStream *outstream,
double *out_latency);
@ -1099,6 +1106,14 @@ SOUNDIO_EXPORT int soundio_instream_end_read(struct SoundIoInStream *instream);
/// * #SoundIoErrorIncompatibleDevice - device does not support pausing/unpausing
SOUNDIO_EXPORT int soundio_instream_pause(struct SoundIoInStream *instream, bool pause);
/// Obtain the number of seconds that the next frame of sound being
/// captured will take to arrive in the buffer, plus the amount of time that is
/// represented in the buffer. This includes both software and hardware latency.
///
/// This function must be called only from within SoundIoInStream::read_callback.
SOUNDIO_EXPORT int soundio_instream_get_latency(struct SoundIoInStream *instream,
double *out_latency);
// Ring Buffer
struct SoundIoRingBuffer;

10
src/alsa.cpp
View file

@ -1468,6 +1468,10 @@ static int outstream_pause_alsa(struct SoundIoPrivate *si, struct SoundIoOutStre
return 0;
}
static int outstream_get_latency_alsa(struct SoundIoPrivate *si, struct SoundIoOutStreamPrivate *os) {
soundio_panic("TODO");
}
static void instream_destroy_alsa(SoundIoPrivate *si, SoundIoInStreamPrivate *is) {
SoundIoInStreamAlsa *isa = &is->backend_data.alsa;
@ -1738,6 +1742,10 @@ static int instream_pause_alsa(struct SoundIoPrivate *si, struct SoundIoInStream
return 0;
}
static int instream_get_latency_alsa(struct SoundIoPrivate *si, struct SoundIoInStreamPrivate *is) {
soundio_panic("TODO");
}
int soundio_alsa_init(SoundIoPrivate *si) {
SoundIoAlsa *sia = &si->backend_data.alsa;
int err;
@ -1818,6 +1826,7 @@ int soundio_alsa_init(SoundIoPrivate *si) {
si->outstream_end_write = outstream_end_write_alsa;
si->outstream_clear_buffer = outstream_clear_buffer_alsa;
si->outstream_pause = outstream_pause_alsa;
si->outstream_get_latency = outstream_get_latency_alsa;
si->instream_open = instream_open_alsa;
si->instream_destroy = instream_destroy_alsa;
@ -1825,6 +1834,7 @@ int soundio_alsa_init(SoundIoPrivate *si) {
si->instream_begin_read = instream_begin_read_alsa;
si->instream_end_read = instream_end_read_alsa;
si->instream_pause = instream_pause_alsa;
si->instream_get_latency = instream_get_latency_alsa;
return 0;
}

10
src/coreaudio.cpp
View file

@ -1052,6 +1052,9 @@ static int outstream_clear_buffer_ca(struct SoundIoPrivate *si, struct SoundIoOu
return SoundIoErrorIncompatibleBackend;
}
static int outstream_get_latency_ca(struct SoundIoPrivate *si, struct SoundIoOutStreamPrivate *os) {
soundio_panic("TODO");
}
static OSStatus on_instream_device_overload(AudioObjectID in_object_id, UInt32 in_number_addresses,
const AudioObjectPropertyAddress in_addresses[], void *in_client_data)
@ -1305,10 +1308,11 @@ static int instream_end_read_ca(struct SoundIoPrivate *si, struct SoundIoInStrea
return 0;
}
static int instream_get_latency_ca(struct SoundIoPrivate *si, struct SoundIoInStreamPrivate *is) {
soundio_panic("TODO");
}
// Possible errors:
// * SoundIoErrorNoMem
int soundio_coreaudio_init(SoundIoPrivate *si) {
SoundIoCoreAudio *sica = &si->backend_data.coreaudio;
int err;
@ -1380,6 +1384,7 @@ int soundio_coreaudio_init(SoundIoPrivate *si) {
si->outstream_end_write = outstream_end_write_ca;
si->outstream_clear_buffer = outstream_clear_buffer_ca;
si->outstream_pause = outstream_pause_ca;
si->outstream_get_latency = outstream_get_latency_ca;
si->instream_open = instream_open_ca;
si->instream_destroy = instream_destroy_ca;
@ -1387,6 +1392,7 @@ int soundio_coreaudio_init(SoundIoPrivate *si) {
si->instream_begin_read = instream_begin_read_ca;
si->instream_end_read = instream_end_read_ca;
si->instream_pause = instream_pause_ca;
si->instream_get_latency = instream_get_latency_ca;
return 0;
}

10
src/dummy.cpp
View file

@ -253,6 +253,10 @@ static int outstream_clear_buffer_dummy(SoundIoPrivate *si, SoundIoOutStreamPriv
return 0;
}
static int outstream_get_latency_dummy(SoundIoPrivate *si, SoundIoOutStreamPrivate *os) {
soundio_panic("TODO");
}
static void instream_destroy_dummy(SoundIoPrivate *si, SoundIoInStreamPrivate *is) {
SoundIoInStreamDummy *isd = &is->backend_data.dummy;
@ -357,6 +361,10 @@ static int instream_end_read_dummy(SoundIoPrivate *si, SoundIoInStreamPrivate *i
return 0;
}
static int instream_get_latency_dummy(SoundIoPrivate *si, SoundIoInStreamPrivate *is) {
soundio_panic("TODO");
}
static int set_all_device_formats(SoundIoDevice *device) {
device->format_count = 18;
device->formats = allocate<SoundIoFormat>(device->format_count);
@ -534,6 +542,7 @@ int soundio_dummy_init(SoundIoPrivate *si) {
si->outstream_end_write = outstream_end_write_dummy;
si->outstream_clear_buffer = outstream_clear_buffer_dummy;
si->outstream_pause = outstream_pause_dummy;
si->outstream_get_latency = outstream_get_latency_dummy;
si->instream_open = instream_open_dummy;
si->instream_destroy = instream_destroy_dummy;
@ -541,6 +550,7 @@ int soundio_dummy_init(SoundIoPrivate *si) {
si->instream_begin_read = instream_begin_read_dummy;
si->instream_end_read = instream_end_read_dummy;
si->instream_pause = instream_pause_dummy;
si->instream_get_latency = instream_get_latency_dummy;
return 0;
}

9
src/jack.cpp
View file

@ -572,6 +572,9 @@ static int outstream_clear_buffer_jack(struct SoundIoPrivate *si, struct SoundIo
return SoundIoErrorIncompatibleBackend;
}
static int outstream_get_latency_jack(struct SoundIoPrivate *si, struct SoundIoOutStreamPrivate *os) {
soundio_panic("TODO");
}
static void instream_destroy_jack(struct SoundIoPrivate *si, struct SoundIoInStreamPrivate *is) {
@ -772,6 +775,10 @@ static int instream_end_read_jack(struct SoundIoPrivate *si, struct SoundIoInStr
return 0;
}
static int instream_get_latency_jack(struct SoundIoPrivate *si, struct SoundIoInStreamPrivate *is) {
soundio_panic("TODO");
}
static void notify_devices_change(SoundIoPrivate *si) {
SoundIo *soundio = &si->pub;
SoundIoJack *sij = &si->backend_data.jack;
@ -919,6 +926,7 @@ int soundio_jack_init(struct SoundIoPrivate *si) {
si->outstream_end_write = outstream_end_write_jack;
si->outstream_clear_buffer = outstream_clear_buffer_jack;
si->outstream_pause = outstream_pause_jack;
si->outstream_get_latency = outstream_get_latency_jack;
si->instream_open = instream_open_jack;
si->instream_destroy = instream_destroy_jack;
@ -926,6 +934,7 @@ int soundio_jack_init(struct SoundIoPrivate *si) {
si->instream_begin_read = instream_begin_read_jack;
si->instream_end_read = instream_end_read_jack;
si->instream_pause = instream_pause_jack;
si->instream_get_latency = instream_get_latency_jack;
return 0;
}

10
src/pulseaudio.cpp
View file

@ -809,6 +809,10 @@ static int outstream_pause_pa(SoundIoPrivate *si, SoundIoOutStreamPrivate *os, b
return 0;
}
static int outstream_get_latency_pa(SoundIoPrivate *si, SoundIoOutStreamPrivate *os) {
soundio_panic("TODO");
}
static void recording_stream_state_callback(pa_stream *stream, void *userdata) {
SoundIoInStreamPrivate *is = (SoundIoInStreamPrivate*)userdata;
SoundIoInStreamPulseAudio *ispa = &is->backend_data.pulseaudio;
@ -1011,6 +1015,10 @@ static int instream_pause_pa(SoundIoPrivate *si, SoundIoInStreamPrivate *is, boo
return 0;
}
static int instream_get_latency_pa(SoundIoPrivate *si, SoundIoInStreamPrivate *is) {
soundio_panic("TODO");
}
int soundio_pulseaudio_init(SoundIoPrivate *si) {
SoundIo *soundio = &si->pub;
SoundIoPulseAudio *sipa = &si->backend_data.pulseaudio;
@ -1084,6 +1092,7 @@ int soundio_pulseaudio_init(SoundIoPrivate *si) {
si->outstream_end_write = outstream_end_write_pa;
si->outstream_clear_buffer = outstream_clear_buffer_pa;
si->outstream_pause = outstream_pause_pa;
si->outstream_get_latency = outstream_get_latency_pa;
si->instream_open = instream_open_pa;
si->instream_destroy = instream_destroy_pa;
@ -1091,6 +1100,7 @@ int soundio_pulseaudio_init(SoundIoPrivate *si) {
si->instream_begin_read = instream_begin_read_pa;
si->instream_end_read = instream_end_read_pa;
si->instream_pause = instream_pause_pa;
si->instream_get_latency = instream_get_latency_pa;
return 0;
}

14
src/soundio.cpp
View file

@ -537,6 +537,13 @@ int soundio_outstream_clear_buffer(struct SoundIoOutStream *outstream) {
return si->outstream_clear_buffer(si, os);
}
int soundio_outstream_get_latency(struct SoundIoOutStream *outstream) {
SoundIo *soundio = outstream->device->soundio;
SoundIoPrivate *si = (SoundIoPrivate *)soundio;
SoundIoOutStreamPrivate *os = (SoundIoOutStreamPrivate *)outstream;
return si->outstream_get_latency(si, os);
}
static void default_instream_error_callback(struct SoundIoInStream *is, int err) {
soundio_panic("libsoundio: %s", soundio_strerror(err));
}
@ -642,6 +649,13 @@ int soundio_instream_end_read(struct SoundIoInStream *instream) {
return si->instream_end_read(si, is);
}
int soundio_instream_get_latency(struct SoundIoInStream *instream, double *out_latency) {
SoundIo *soundio = instream->device->soundio;
SoundIoPrivate *si = (SoundIoPrivate *)soundio;
SoundIoInStreamPrivate *is = (SoundIoInStreamPrivate *)instream;
return si->instream_get_latency(si, is);
}
void soundio_destroy_devices_info(SoundIoDevicesInfo *devices_info) {
if (!devices_info)
return;

2
src/soundio.hpp
View file

@ -147,6 +147,7 @@ struct SoundIoPrivate {
int (*outstream_end_write)(struct SoundIoPrivate *, struct SoundIoOutStreamPrivate *);
int (*outstream_clear_buffer)(struct SoundIoPrivate *, struct SoundIoOutStreamPrivate *);
int (*outstream_pause)(struct SoundIoPrivate *, struct SoundIoOutStreamPrivate *, bool pause);
int (*outstream_get_latency)(struct SoundIoPrivate *, struct SoundIoOutStreamPrivate *);
int (*instream_open)(struct SoundIoPrivate *, struct SoundIoInStreamPrivate *);
@ -156,6 +157,7 @@ struct SoundIoPrivate {
SoundIoChannelArea **out_areas, int *out_frame_count);
int (*instream_end_read)(struct SoundIoPrivate *, struct SoundIoInStreamPrivate *);
int (*instream_pause)(struct SoundIoPrivate *, struct SoundIoInStreamPrivate *, bool pause);
int (*instream_get_latency)(struct SoundIoPrivate *, struct SoundIoInStreamPrivate *);
SoundIoBackendData backend_data;
};

10
src/wasapi.cpp
View file

@ -1523,6 +1523,10 @@ static int outstream_clear_buffer_wasapi(struct SoundIoPrivate *si, struct Sound
return 0;
}
static int outstream_get_latency_wasapi(struct SoundIoPrivate *si, struct SoundIoOutStreamPrivate *os) {
soundio_panic("TODO");
}
static void instream_thread_deinit(SoundIoPrivate *si, SoundIoInStreamPrivate *is) {
SoundIoInStreamWasapi *isw = &is->backend_data.wasapi;
@ -1920,6 +1924,10 @@ static int instream_end_read_wasapi(struct SoundIoPrivate *si, struct SoundIoInS
return 0;
}
static int instream_get_latency_wasapi(struct SoundIoPrivate *si, struct SoundIoInStreamPrivate *is) {
soundio_panic("TODO");
}
static void destroy_wasapi(struct SoundIoPrivate *si) {
SoundIoWasapi *siw = &si->backend_data.wasapi;
@ -2073,6 +2081,7 @@ int soundio_wasapi_init(SoundIoPrivate *si) {
si->outstream_end_write = outstream_end_write_wasapi;
si->outstream_clear_buffer = outstream_clear_buffer_wasapi;
si->outstream_pause = outstream_pause_wasapi;
si->outstream_get_latency = outstream_get_latency_wasapi;
si->instream_open = instream_open_wasapi;
si->instream_destroy = instream_destroy_wasapi;
@ -2080,6 +2089,7 @@ int soundio_wasapi_init(SoundIoPrivate *si) {
si->instream_begin_read = instream_begin_read_wasapi;
si->instream_end_read = instream_end_read_wasapi;
si->instream_pause = instream_pause_wasapi;
si->instream_get_latency = instream_get_latency_wasapi;
return 0;
}