From 9d34e6d8a1a1db44d882cc307a0e6ebb7a406e28 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?K=C5=91v=C3=A1g=C3=B3=2C=20Zolt=C3=A1n?= Date: Mon, 19 Aug 2019 01:06:50 +0200 Subject: [PATCH] paaudio: prepare for multiple audiodev MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Have a pool of refcounted connections per server, so if the user creates multiple audiodevs to the same pa server, it will use a single connection. (It will still create different streams, so the user can manage those streams separately in pulseaudio.) Signed-off-by: Kővágó, Zoltán Message-id: d43218f327c62cdbd16ea0c922612025fbc4805e.1566168923.git.DirtY.iCE.hu@gmail.com Signed-off-by: Gerd Hoffmann --- audio/paaudio.c | 329 +++++++++++++++++++++++++++--------------------- 1 file changed, 188 insertions(+), 141 deletions(-) diff --git a/audio/paaudio.c b/audio/paaudio.c index 5fc886bb33..cc3a34c2ea 100644 --- a/audio/paaudio.c +++ b/audio/paaudio.c @@ -11,10 +11,21 @@ #include "audio_int.h" #include "audio_pt_int.h" -typedef struct { - Audiodev *dev; +typedef struct PAConnection { + char *server; + int refcount; + QTAILQ_ENTRY(PAConnection) list; + pa_threaded_mainloop *mainloop; pa_context *context; +} PAConnection; + +static QTAILQ_HEAD(PAConnectionHead, PAConnection) pa_conns = + QTAILQ_HEAD_INITIALIZER(pa_conns); + +typedef struct { + Audiodev *dev; + PAConnection *conn; } paaudio; typedef struct { @@ -45,7 +56,7 @@ typedef struct { int samples; } PAVoiceIn; -static void qpa_audio_fini(void *opaque); +static void qpa_conn_fini(PAConnection *c); static void GCC_FMT_ATTR (2, 3) qpa_logerr (int err, const char *fmt, ...) { @@ -108,11 +119,11 @@ static inline int PA_STREAM_IS_GOOD(pa_stream_state_t x) static int qpa_simple_read (PAVoiceIn *p, void *data, size_t length, int *rerror) { - paaudio *g = p->g; + PAConnection *c = p->g->conn; - pa_threaded_mainloop_lock (g->mainloop); + pa_threaded_mainloop_lock(c->mainloop); - CHECK_DEAD_GOTO (g, p->stream, rerror, unlock_and_fail); + CHECK_DEAD_GOTO(c, p->stream, rerror, unlock_and_fail); while (length > 0) { size_t l; @@ -121,11 +132,11 @@ static int qpa_simple_read (PAVoiceIn *p, void *data, size_t length, int *rerror int r; r = pa_stream_peek (p->stream, &p->read_data, &p->read_length); - CHECK_SUCCESS_GOTO (g, rerror, r == 0, unlock_and_fail); + CHECK_SUCCESS_GOTO(c, rerror, r == 0, unlock_and_fail); if (!p->read_data) { - pa_threaded_mainloop_wait (g->mainloop); - CHECK_DEAD_GOTO (g, p->stream, rerror, unlock_and_fail); + pa_threaded_mainloop_wait(c->mainloop); + CHECK_DEAD_GOTO(c, p->stream, rerror, unlock_and_fail); } else { p->read_index = 0; } @@ -148,53 +159,53 @@ static int qpa_simple_read (PAVoiceIn *p, void *data, size_t length, int *rerror p->read_length = 0; p->read_index = 0; - CHECK_SUCCESS_GOTO (g, rerror, r == 0, unlock_and_fail); + CHECK_SUCCESS_GOTO(c, rerror, r == 0, unlock_and_fail); } } - pa_threaded_mainloop_unlock (g->mainloop); + pa_threaded_mainloop_unlock(c->mainloop); return 0; unlock_and_fail: - pa_threaded_mainloop_unlock (g->mainloop); + pa_threaded_mainloop_unlock(c->mainloop); return -1; } static int qpa_simple_write (PAVoiceOut *p, const void *data, size_t length, int *rerror) { - paaudio *g = p->g; + PAConnection *c = p->g->conn; - pa_threaded_mainloop_lock (g->mainloop); + pa_threaded_mainloop_lock(c->mainloop); - CHECK_DEAD_GOTO (g, p->stream, rerror, unlock_and_fail); + CHECK_DEAD_GOTO(c, p->stream, rerror, unlock_and_fail); while (length > 0) { size_t l; int r; while (!(l = pa_stream_writable_size (p->stream))) { - pa_threaded_mainloop_wait (g->mainloop); - CHECK_DEAD_GOTO (g, p->stream, rerror, unlock_and_fail); + pa_threaded_mainloop_wait(c->mainloop); + CHECK_DEAD_GOTO(c, p->stream, rerror, unlock_and_fail); } - CHECK_SUCCESS_GOTO (g, rerror, l != (size_t) -1, unlock_and_fail); + CHECK_SUCCESS_GOTO(c, rerror, l != (size_t) -1, unlock_and_fail); if (l > length) { l = length; } r = pa_stream_write (p->stream, data, l, NULL, 0LL, PA_SEEK_RELATIVE); - CHECK_SUCCESS_GOTO (g, rerror, r >= 0, unlock_and_fail); + CHECK_SUCCESS_GOTO(c, rerror, r >= 0, unlock_and_fail); data = (const uint8_t *) data + l; length -= l; } - pa_threaded_mainloop_unlock (g->mainloop); + pa_threaded_mainloop_unlock(c->mainloop); return 0; unlock_and_fail: - pa_threaded_mainloop_unlock (g->mainloop); + pa_threaded_mainloop_unlock(c->mainloop); return -1; } @@ -432,13 +443,13 @@ static AudioFormat pa_to_audfmt (pa_sample_format_t fmt, int *endianness) static void context_state_cb (pa_context *c, void *userdata) { - paaudio *g = userdata; + PAConnection *conn = userdata; switch (pa_context_get_state(c)) { case PA_CONTEXT_READY: case PA_CONTEXT_TERMINATED: case PA_CONTEXT_FAILED: - pa_threaded_mainloop_signal (g->mainloop, 0); + pa_threaded_mainloop_signal(conn->mainloop, 0); break; case PA_CONTEXT_UNCONNECTED: @@ -451,14 +462,14 @@ static void context_state_cb (pa_context *c, void *userdata) static void stream_state_cb (pa_stream *s, void * userdata) { - paaudio *g = userdata; + PAConnection *c = userdata; switch (pa_stream_get_state (s)) { case PA_STREAM_READY: case PA_STREAM_FAILED: case PA_STREAM_TERMINATED: - pa_threaded_mainloop_signal (g->mainloop, 0); + pa_threaded_mainloop_signal(c->mainloop, 0); break; case PA_STREAM_UNCONNECTED: @@ -469,13 +480,13 @@ static void stream_state_cb (pa_stream *s, void * userdata) static void stream_request_cb (pa_stream *s, size_t length, void *userdata) { - paaudio *g = userdata; + PAConnection *c = userdata; - pa_threaded_mainloop_signal (g->mainloop, 0); + pa_threaded_mainloop_signal(c->mainloop, 0); } static pa_stream *qpa_simple_new ( - paaudio *g, + PAConnection *c, const char *name, pa_stream_direction_t dir, const char *dev, @@ -486,50 +497,48 @@ static pa_stream *qpa_simple_new ( { int r; pa_stream *stream; + pa_stream_flags_t flags; - pa_threaded_mainloop_lock (g->mainloop); + pa_threaded_mainloop_lock(c->mainloop); - stream = pa_stream_new (g->context, name, ss, map); + stream = pa_stream_new(c->context, name, ss, map); if (!stream) { goto fail; } - pa_stream_set_state_callback (stream, stream_state_cb, g); - pa_stream_set_read_callback (stream, stream_request_cb, g); - pa_stream_set_write_callback (stream, stream_request_cb, g); + pa_stream_set_state_callback(stream, stream_state_cb, c); + pa_stream_set_read_callback(stream, stream_request_cb, c); + pa_stream_set_write_callback(stream, stream_request_cb, c); + + flags = + PA_STREAM_INTERPOLATE_TIMING +#ifdef PA_STREAM_ADJUST_LATENCY + | PA_STREAM_ADJUST_LATENCY +#endif + | PA_STREAM_AUTO_TIMING_UPDATE; if (dir == PA_STREAM_PLAYBACK) { - r = pa_stream_connect_playback (stream, dev, attr, - PA_STREAM_INTERPOLATE_TIMING -#ifdef PA_STREAM_ADJUST_LATENCY - |PA_STREAM_ADJUST_LATENCY -#endif - |PA_STREAM_AUTO_TIMING_UPDATE, NULL, NULL); + r = pa_stream_connect_playback(stream, dev, attr, flags, NULL, NULL); } else { - r = pa_stream_connect_record (stream, dev, attr, - PA_STREAM_INTERPOLATE_TIMING -#ifdef PA_STREAM_ADJUST_LATENCY - |PA_STREAM_ADJUST_LATENCY -#endif - |PA_STREAM_AUTO_TIMING_UPDATE); + r = pa_stream_connect_record(stream, dev, attr, flags); } if (r < 0) { goto fail; } - pa_threaded_mainloop_unlock (g->mainloop); + pa_threaded_mainloop_unlock(c->mainloop); return stream; fail: - pa_threaded_mainloop_unlock (g->mainloop); + pa_threaded_mainloop_unlock(c->mainloop); if (stream) { pa_stream_unref (stream); } - *rerror = pa_context_errno (g->context); + *rerror = pa_context_errno(c->context); return NULL; } @@ -545,6 +554,7 @@ static int qpa_init_out(HWVoiceOut *hw, struct audsettings *as, paaudio *g = pa->g = drv_opaque; AudiodevPaOptions *popts = &g->dev->u.pa; AudiodevPaPerDirectionOptions *ppdo = popts->out; + PAConnection *c = g->conn; ss.format = audfmt_to_pa (as->fmt, as->endianness); ss.channels = as->nchannels; @@ -558,7 +568,7 @@ static int qpa_init_out(HWVoiceOut *hw, struct audsettings *as, obt_as.fmt = pa_to_audfmt (ss.format, &obt_as.endianness); pa->stream = qpa_simple_new ( - g, + c, "qemu", PA_STREAM_PLAYBACK, ppdo->has_name ? ppdo->name : NULL, @@ -612,6 +622,7 @@ static int qpa_init_in(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque) paaudio *g = pa->g = drv_opaque; AudiodevPaOptions *popts = &g->dev->u.pa; AudiodevPaPerDirectionOptions *ppdo = popts->in; + PAConnection *c = g->conn; ss.format = audfmt_to_pa (as->fmt, as->endianness); ss.channels = as->nchannels; @@ -625,7 +636,7 @@ static int qpa_init_in(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque) obt_as.fmt = pa_to_audfmt (ss.format, &obt_as.endianness); pa->stream = qpa_simple_new ( - g, + c, "qemu", PA_STREAM_RECORD, ppdo->has_name ? ppdo->name : NULL, @@ -714,7 +725,7 @@ static int qpa_ctl_out (HWVoiceOut *hw, int cmd, ...) PAVoiceOut *pa = (PAVoiceOut *) hw; pa_operation *op; pa_cvolume v; - paaudio *g = pa->g; + PAConnection *c = pa->g->conn; #ifdef PA_CHECK_VERSION /* macro is present in 0.9.16+ */ pa_cvolume_init (&v); /* function is present in 0.9.13+ */ @@ -734,28 +745,29 @@ static int qpa_ctl_out (HWVoiceOut *hw, int cmd, ...) v.values[0] = ((PA_VOLUME_NORM - PA_VOLUME_MUTED) * sw->vol.l) / UINT32_MAX; v.values[1] = ((PA_VOLUME_NORM - PA_VOLUME_MUTED) * sw->vol.r) / UINT32_MAX; - pa_threaded_mainloop_lock (g->mainloop); + pa_threaded_mainloop_lock(c->mainloop); - op = pa_context_set_sink_input_volume (g->context, + op = pa_context_set_sink_input_volume(c->context, pa_stream_get_index (pa->stream), &v, NULL, NULL); - if (!op) - qpa_logerr (pa_context_errno (g->context), - "set_sink_input_volume() failed\n"); - else - pa_operation_unref (op); + if (!op) { + qpa_logerr(pa_context_errno(c->context), + "set_sink_input_volume() failed\n"); + } else { + pa_operation_unref(op); + } - op = pa_context_set_sink_input_mute (g->context, + op = pa_context_set_sink_input_mute(c->context, pa_stream_get_index (pa->stream), sw->vol.mute, NULL, NULL); if (!op) { - qpa_logerr (pa_context_errno (g->context), - "set_sink_input_mute() failed\n"); + qpa_logerr(pa_context_errno(c->context), + "set_sink_input_mute() failed\n"); } else { - pa_operation_unref (op); + pa_operation_unref(op); } - pa_threaded_mainloop_unlock (g->mainloop); + pa_threaded_mainloop_unlock(c->mainloop); } } return 0; @@ -766,7 +778,7 @@ static int qpa_ctl_in (HWVoiceIn *hw, int cmd, ...) PAVoiceIn *pa = (PAVoiceIn *) hw; pa_operation *op; pa_cvolume v; - paaudio *g = pa->g; + PAConnection *c = pa->g->conn; #ifdef PA_CHECK_VERSION pa_cvolume_init (&v); @@ -786,29 +798,29 @@ static int qpa_ctl_in (HWVoiceIn *hw, int cmd, ...) v.values[0] = ((PA_VOLUME_NORM - PA_VOLUME_MUTED) * sw->vol.l) / UINT32_MAX; v.values[1] = ((PA_VOLUME_NORM - PA_VOLUME_MUTED) * sw->vol.r) / UINT32_MAX; - pa_threaded_mainloop_lock (g->mainloop); + pa_threaded_mainloop_lock(c->mainloop); - op = pa_context_set_source_output_volume (g->context, - pa_stream_get_index (pa->stream), + op = pa_context_set_source_output_volume(c->context, + pa_stream_get_index(pa->stream), &v, NULL, NULL); if (!op) { - qpa_logerr (pa_context_errno (g->context), - "set_source_output_volume() failed\n"); + qpa_logerr(pa_context_errno(c->context), + "set_source_output_volume() failed\n"); } else { pa_operation_unref(op); } - op = pa_context_set_source_output_mute (g->context, + op = pa_context_set_source_output_mute(c->context, pa_stream_get_index (pa->stream), sw->vol.mute, NULL, NULL); if (!op) { - qpa_logerr (pa_context_errno (g->context), - "set_source_output_mute() failed\n"); + qpa_logerr(pa_context_errno(c->context), + "set_source_output_mute() failed\n"); } else { pa_operation_unref (op); } - pa_threaded_mainloop_unlock (g->mainloop); + pa_threaded_mainloop_unlock(c->mainloop); } } return 0; @@ -828,11 +840,75 @@ static int qpa_validate_per_direction_opts(Audiodev *dev, return 1; } +/* common */ +static void *qpa_conn_init(const char *server) +{ + PAConnection *c = g_malloc0(sizeof(PAConnection)); + QTAILQ_INSERT_TAIL(&pa_conns, c, list); + + c->mainloop = pa_threaded_mainloop_new(); + if (!c->mainloop) { + goto fail; + } + + c->context = pa_context_new(pa_threaded_mainloop_get_api(c->mainloop), + server); + if (!c->context) { + goto fail; + } + + pa_context_set_state_callback(c->context, context_state_cb, c); + + if (pa_context_connect(c->context, server, 0, NULL) < 0) { + qpa_logerr(pa_context_errno(c->context), + "pa_context_connect() failed\n"); + goto fail; + } + + pa_threaded_mainloop_lock(c->mainloop); + + if (pa_threaded_mainloop_start(c->mainloop) < 0) { + goto unlock_and_fail; + } + + for (;;) { + pa_context_state_t state; + + state = pa_context_get_state(c->context); + + if (state == PA_CONTEXT_READY) { + break; + } + + if (!PA_CONTEXT_IS_GOOD(state)) { + qpa_logerr(pa_context_errno(c->context), + "Wrong context state\n"); + goto unlock_and_fail; + } + + /* Wait until the context is ready */ + pa_threaded_mainloop_wait(c->mainloop); + } + + pa_threaded_mainloop_unlock(c->mainloop); + return c; + +unlock_and_fail: + pa_threaded_mainloop_unlock(c->mainloop); +fail: + AUD_log (AUDIO_CAP, "Failed to initialize PA context"); + qpa_conn_fini(c); + return NULL; +} + static void *qpa_audio_init(Audiodev *dev) { paaudio *g; AudiodevPaOptions *popts = &dev->u.pa; const char *server; + PAConnection *c; + + assert(dev->driver == AUDIODEV_DRIVER_PA); if (!popts->has_server) { char pidfile[64]; @@ -849,93 +925,64 @@ static void *qpa_audio_init(Audiodev *dev) } } - assert(dev->driver == AUDIODEV_DRIVER_PA); - - g = g_malloc(sizeof(paaudio)); - server = popts->has_server ? popts->server : NULL; - if (!qpa_validate_per_direction_opts(dev, popts->in)) { - goto fail; + return NULL; } if (!qpa_validate_per_direction_opts(dev, popts->out)) { - goto fail; + return NULL; } + g = g_malloc0(sizeof(paaudio)); + server = popts->has_server ? popts->server : NULL; + g->dev = dev; - g->mainloop = NULL; - g->context = NULL; - g->mainloop = pa_threaded_mainloop_new (); - if (!g->mainloop) { - goto fail; - } - - g->context = pa_context_new (pa_threaded_mainloop_get_api (g->mainloop), - server); - if (!g->context) { - goto fail; - } - - pa_context_set_state_callback (g->context, context_state_cb, g); - - if (pa_context_connect(g->context, server, 0, NULL) < 0) { - qpa_logerr (pa_context_errno (g->context), - "pa_context_connect() failed\n"); - goto fail; - } - - pa_threaded_mainloop_lock (g->mainloop); - - if (pa_threaded_mainloop_start (g->mainloop) < 0) { - goto unlock_and_fail; - } - - for (;;) { - pa_context_state_t state; - - state = pa_context_get_state (g->context); - - if (state == PA_CONTEXT_READY) { + QTAILQ_FOREACH(c, &pa_conns, list) { + if (server == NULL || c->server == NULL ? + server == c->server : + strcmp(server, c->server) == 0) { + g->conn = c; break; } - - if (!PA_CONTEXT_IS_GOOD (state)) { - qpa_logerr (pa_context_errno (g->context), - "Wrong context state\n"); - goto unlock_and_fail; - } - - /* Wait until the context is ready */ - pa_threaded_mainloop_wait (g->mainloop); + } + if (!g->conn) { + g->conn = qpa_conn_init(server); + } + if (!g->conn) { + g_free(g); + return NULL; } - pa_threaded_mainloop_unlock (g->mainloop); - + ++g->conn->refcount; return g; +} -unlock_and_fail: - pa_threaded_mainloop_unlock (g->mainloop); -fail: - AUD_log (AUDIO_CAP, "Failed to initialize PA context"); - qpa_audio_fini(g); - return NULL; +static void qpa_conn_fini(PAConnection *c) +{ + if (c->mainloop) { + pa_threaded_mainloop_stop(c->mainloop); + } + + if (c->context) { + pa_context_disconnect(c->context); + pa_context_unref(c->context); + } + + if (c->mainloop) { + pa_threaded_mainloop_free(c->mainloop); + } + + QTAILQ_REMOVE(&pa_conns, c, list); + g_free(c); } static void qpa_audio_fini (void *opaque) { paaudio *g = opaque; + PAConnection *c = g->conn; - if (g->mainloop) { - pa_threaded_mainloop_stop (g->mainloop); - } - - if (g->context) { - pa_context_disconnect (g->context); - pa_context_unref (g->context); - } - - if (g->mainloop) { - pa_threaded_mainloop_free (g->mainloop); + if (--c->refcount == 0) { + qpa_conn_fini(c); } g_free(g);