static int Open (vlc_object_t *obj) { services_discovery_t *sd = (services_discovery_t *)obj; pa_operation *op; pa_context *ctx; services_discovery_sys_t *sys = malloc (sizeof (*sys)); if (unlikely(sys == NULL)) return VLC_ENOMEM; ctx = vlc_pa_connect (obj, &sys->mainloop); if (ctx == NULL) { free (sys); return VLC_EGENERIC; } sd->p_sys = sys; sd->description = _("Audio capture"); sys->context = ctx; sys->root = NULL; /* Subscribe for source events */ const pa_subscription_mask_t mask = PA_SUBSCRIPTION_MASK_SOURCE; pa_threaded_mainloop_lock (sys->mainloop); pa_context_set_subscribe_callback (ctx, ContextCallback, sd); op = pa_context_subscribe (ctx, mask, NULL, NULL); if (likely(op != NULL)) pa_operation_unref (op); /* Enumerate existing sources */ op = pa_context_get_source_info_list (ctx, SourceCallback, sd); if (likely(op != NULL)) { //while (pa_operation_get_state (op) == PA_OPERATION_RUNNING) // pa_threaded_mainloop_wait (sys->mainloop); pa_operation_unref (op); } pa_threaded_mainloop_unlock (sys->mainloop); return VLC_SUCCESS; /* error: pa_threaded_mainloop_unlock (sys->mainloop); vlc_pa_disconnect (obj, ctx, sys->mainloop); free (sys); return VLC_EGENERIC;*/ }
static int Open(vlc_object_t *obj) { demux_t *demux = (demux_t *)obj; demux_sys_t *sys = malloc(sizeof (*sys)); if (unlikely(sys == NULL)) return VLC_ENOMEM; sys->context = vlc_pa_connect(obj, &sys->mainloop); if (sys->context == NULL) { free(sys); return VLC_EGENERIC; } sys->stream = NULL; sys->es = NULL; sys->discontinuity = false; sys->caching = INT64_C(1000) * var_InheritInteger(obj, "live-caching"); demux->p_sys = sys; /* Stream parameters */ struct pa_sample_spec ss; ss.format = PA_SAMPLE_S16NE; ss.rate = 48000; ss.channels = 2; assert(pa_sample_spec_valid(&ss)); struct pa_channel_map map; map.channels = 2; map.map[0] = PA_CHANNEL_POSITION_FRONT_LEFT; map.map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT; assert(pa_channel_map_valid(&map)); const pa_stream_flags_t flags = PA_STREAM_INTERPOLATE_TIMING | PA_STREAM_AUTO_TIMING_UPDATE | PA_STREAM_ADJUST_LATENCY | PA_STREAM_FIX_FORMAT | PA_STREAM_FIX_RATE /*| PA_STREAM_FIX_CHANNELS*/; const char *dev = NULL; if (demux->psz_location != NULL && demux->psz_location[0] != '\0') dev = demux->psz_location; struct pa_buffer_attr attr = { .maxlength = -1, .fragsize = pa_usec_to_bytes(sys->caching, &ss) / 2, }; es_format_t fmt; /* Create record stream */ pa_stream *s; pa_operation *op; pa_threaded_mainloop_lock(sys->mainloop); s = pa_stream_new(sys->context, "audio stream", &ss, &map); if (s == NULL) goto error; sys->stream = s; pa_stream_set_state_callback(s, stream_state_cb, sys->mainloop); pa_stream_set_read_callback(s, stream_read_cb, demux); pa_stream_set_buffer_attr_callback(s, stream_buffer_attr_cb, demux); pa_stream_set_moved_callback(s, stream_moved_cb, demux); pa_stream_set_overflow_callback(s, stream_overflow_cb, demux); pa_stream_set_started_callback(s, stream_started_cb, demux); pa_stream_set_suspended_callback(s, stream_suspended_cb, demux); pa_stream_set_underflow_callback(s, stream_underflow_cb, demux); if (pa_stream_connect_record(s, dev, &attr, flags) < 0 || stream_wait(s, sys->mainloop)) { vlc_pa_error(obj, "cannot connect record stream", sys->context); goto error; } /* The ES should be initialized before stream_read_cb(), but how? */ const struct pa_sample_spec *pss = pa_stream_get_sample_spec(s); if ((unsigned)pss->format >= sizeof (fourccs) / sizeof (fourccs[0])) { msg_Err(obj, "unknown PulseAudio sample format %u", (unsigned)pss->format); goto error; } vlc_fourcc_t format = fourccs[pss->format]; if (format == 0) { /* FIXME: should renegotiate something else */ msg_Err(obj, "unsupported PulseAudio sample format %u", (unsigned)pss->format); goto error; } es_format_Init(&fmt, AUDIO_ES, format); fmt.audio.i_physical_channels = fmt.audio.i_original_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT; fmt.audio.i_channels = ss.channels; fmt.audio.i_rate = pss->rate; fmt.audio.i_bitspersample = aout_BitsPerSample(format); fmt.audio.i_blockalign = fmt.audio.i_bitspersample * ss.channels / 8; fmt.i_bitrate = fmt.audio.i_bitspersample * ss.channels * pss->rate; sys->framesize = fmt.audio.i_blockalign; sys->es = es_out_Add (demux->out, &fmt); /* Update the buffer attributes according to actual format */ attr.fragsize = pa_usec_to_bytes(sys->caching, pss) / 2; op = pa_stream_set_buffer_attr(s, &attr, stream_success_cb, sys->mainloop); if (likely(op != NULL)) { while (pa_operation_get_state(op) == PA_OPERATION_RUNNING) pa_threaded_mainloop_wait(sys->mainloop); pa_operation_unref(op); } stream_buffer_attr_cb(s, demux); pa_threaded_mainloop_unlock(sys->mainloop); demux->pf_demux = NULL; demux->pf_control = Control; return VLC_SUCCESS; error: pa_threaded_mainloop_unlock(sys->mainloop); Close(obj); return VLC_EGENERIC; } static void Close (vlc_object_t *obj) { demux_t *demux = (demux_t *)obj; demux_sys_t *sys = demux->p_sys; pa_stream *s = sys->stream; if (likely(s != NULL)) { pa_threaded_mainloop_lock(sys->mainloop); pa_stream_disconnect(s); pa_stream_set_state_callback(s, NULL, NULL); pa_stream_set_read_callback(s, NULL, NULL); pa_stream_set_buffer_attr_callback(s, NULL, NULL); pa_stream_set_moved_callback(s, NULL, NULL); pa_stream_set_overflow_callback(s, NULL, NULL); pa_stream_set_started_callback(s, NULL, NULL); pa_stream_set_suspended_callback(s, NULL, NULL); pa_stream_set_underflow_callback(s, NULL, NULL); pa_stream_unref(s); pa_threaded_mainloop_unlock(sys->mainloop); } vlc_pa_disconnect(obj, sys->context, sys->mainloop); free(sys); }