diff options
Diffstat (limited to 'src/pulsecore/sink.c')
-rw-r--r-- | src/pulsecore/sink.c | 381 |
1 files changed, 242 insertions, 139 deletions
diff --git a/src/pulsecore/sink.c b/src/pulsecore/sink.c index 717584f2..1cce8e6b 100644 --- a/src/pulsecore/sink.c +++ b/src/pulsecore/sink.c @@ -212,7 +212,7 @@ pa_sink* pa_sink_new( pa_cvolume_reset(&data->volume, data->sample_spec.channels); pa_return_null_if_fail(pa_cvolume_valid(&data->volume)); - pa_return_null_if_fail(data->volume.channels == data->sample_spec.channels); + pa_return_null_if_fail(pa_cvolume_compatible(&data->volume, &data->sample_spec)); if (!data->muted_is_set) data->muted = FALSE; @@ -249,7 +249,7 @@ pa_sink* pa_sink_new( s->inputs = pa_idxset_new(NULL, NULL); s->n_corked = 0; - s->reference_volume = s->virtual_volume = data->volume; + s->reference_volume = s->real_volume = data->volume; pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels); s->base_volume = PA_VOLUME_NORM; s->n_volume_steps = PA_VOLUME_NORM+1; @@ -434,6 +434,11 @@ void pa_sink_put(pa_sink* s) { if ((s->flags & PA_SINK_DECIBEL_VOLUME) && s->core->flat_volumes) s->flags |= PA_SINK_FLAT_VOLUME; + /* We assume that if the sink implementor changed the default + * volume he did so in real_volume, because that is the usual + * place where he is supposed to place his changes. */ + s->reference_volume = s->real_volume; + s->thread_info.soft_volume = s->soft_volume; s->thread_info.soft_muted = s->muted; @@ -1212,105 +1217,144 @@ pa_usec_t pa_sink_get_latency_within_thread(pa_sink *s) { return usec; } -static void compute_new_soft_volume(pa_sink_input *i, const pa_cvolume *new_volume) { - unsigned c; +/* Called from main context */ +static void compute_reference_ratios(pa_sink *s) { + uint32_t idx; + pa_sink_input *i; + + pa_sink_assert_ref(s); + pa_assert_ctl_context(); + pa_assert(PA_SINK_IS_LINKED(s->state)); + pa_assert(s->flags & PA_SINK_FLAT_VOLUME); - pa_sink_input_assert_ref(i); - pa_assert(new_volume->channels == i->sample_spec.channels); + PA_IDXSET_FOREACH(i, s->inputs, idx) { + unsigned c; + pa_cvolume remapped; - /* - * This basically calculates: - * - * i->relative_volume := i->virtual_volume / new_volume - * i->soft_volume := i->relative_volume * i->volume_factor - */ + /* + * Calculates the reference volume from the sink's reference + * volume. This basically calculates: + * + * i->reference_ratio = i->volume / s->reference_volume + */ - /* The new sink volume passed in here must already be remapped to - * the sink input's channel map! */ + remapped = s->reference_volume; + pa_cvolume_remap(&remapped, &s->channel_map, &i->channel_map); - i->soft_volume.channels = i->sample_spec.channels; + i->reference_ratio.channels = i->sample_spec.channels; - for (c = 0; c < i->sample_spec.channels; c++) + for (c = 0; c < i->sample_spec.channels; c++) { - if (new_volume->values[c] <= PA_VOLUME_MUTED) - /* We leave i->relative_volume untouched */ - i->soft_volume.values[c] = PA_VOLUME_MUTED; - else { - i->relative_volume[c] = - pa_sw_volume_to_linear(i->virtual_volume.values[c]) / - pa_sw_volume_to_linear(new_volume->values[c]); + /* We don't update when the sink volume is 0 anyway */ + if (remapped.values[c] <= PA_VOLUME_MUTED) + continue; - i->soft_volume.values[c] = pa_sw_volume_from_linear( - i->relative_volume[c] * - pa_sw_volume_to_linear(i->volume_factor.values[c])); + /* Don't update the reference ratio unless necessary */ + if (pa_sw_volume_multiply( + i->reference_ratio.values[c], + remapped.values[c]) == i->volume.values[c]) + continue; + + i->reference_ratio.values[c] = pa_sw_volume_divide( + i->volume.values[c], + remapped.values[c]); } + } +} + +/* Called from main context */ +static void compute_real_ratios(pa_sink *s) { + pa_sink_input *i; + uint32_t idx; - /* Hooks have the ability to play games with i->soft_volume */ - pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_SET_VOLUME], i); + pa_sink_assert_ref(s); + pa_assert_ctl_context(); + pa_assert(PA_SINK_IS_LINKED(s->state)); + pa_assert(s->flags & PA_SINK_FLAT_VOLUME); - /* We don't copy the soft_volume to the thread_info data - * here. That must be done by the caller */ + PA_IDXSET_FOREACH(i, s->inputs, idx) { + unsigned c; + pa_cvolume remapped; + + /* + * This basically calculates: + * + * i->real_ratio := i->volume / s->real_volume + * i->soft_volume := i->real_ratio * i->volume_factor + */ + + remapped = s->real_volume; + pa_cvolume_remap(&remapped, &s->channel_map, &i->channel_map); + + i->real_ratio.channels = i->sample_spec.channels; + i->soft_volume.channels = i->sample_spec.channels; + + for (c = 0; c < i->sample_spec.channels; c++) { + + if (remapped.values[c] <= PA_VOLUME_MUTED) { + /* We leave i->real_ratio untouched */ + i->soft_volume.values[c] = PA_VOLUME_MUTED; + continue; + } + + /* Don't lose accuracy unless necessary */ + if (pa_sw_volume_multiply( + i->real_ratio.values[c], + remapped.values[c]) != i->volume.values[c]) + + i->real_ratio.values[c] = pa_sw_volume_divide( + i->volume.values[c], + remapped.values[c]); + + i->soft_volume.values[c] = pa_sw_volume_multiply( + i->real_ratio.values[c], + i->volume_factor.values[c]); + } + + /* We don't copy the soft_volume to the thread_info data + * here. That must be done by the caller */ + } } /* Called from main thread */ -void pa_sink_update_flat_volume(pa_sink *s, pa_cvolume *new_volume) { +static void compute_real_volume(pa_sink *s) { pa_sink_input *i; uint32_t idx; pa_sink_assert_ref(s); pa_assert_ctl_context(); - pa_assert(new_volume); pa_assert(PA_SINK_IS_LINKED(s->state)); pa_assert(s->flags & PA_SINK_FLAT_VOLUME); - /* This is called whenever a sink input volume changes or a sink - * input is added/removed and we might need to fix up the sink - * volume accordingly. Please note that we don't actually update - * the sinks volume here, we only return how it needs to be - * updated. The caller should then call pa_sink_set_volume().*/ + /* This determines the maximum volume of all streams and sets + * s->real_volume accordingly. */ if (pa_idxset_isempty(s->inputs)) { /* In the special case that we have no sink input we leave the * volume unmodified. */ - *new_volume = s->reference_volume; + s->real_volume = s->reference_volume; return; } - pa_cvolume_mute(new_volume, s->channel_map.channels); + pa_cvolume_mute(&s->real_volume, s->channel_map.channels); /* First let's determine the new maximum volume of all inputs * connected to this sink */ - for (i = PA_SINK_INPUT(pa_idxset_first(s->inputs, &idx)); i; i = PA_SINK_INPUT(pa_idxset_next(s->inputs, &idx))) { - unsigned c; - pa_cvolume remapped_volume; - - remapped_volume = i->virtual_volume; - pa_cvolume_remap(&remapped_volume, &i->channel_map, &s->channel_map); + PA_IDXSET_FOREACH(i, s->inputs, idx) { + pa_cvolume remapped; - for (c = 0; c < new_volume->channels; c++) - if (remapped_volume.values[c] > new_volume->values[c]) - new_volume->values[c] = remapped_volume.values[c]; + remapped = i->volume; + pa_cvolume_remap(&remapped, &i->channel_map, &s->channel_map); + pa_cvolume_merge(&s->real_volume, &s->real_volume, &remapped); } - /* Then, let's update the soft volumes of all inputs connected - * to this sink */ - for (i = PA_SINK_INPUT(pa_idxset_first(s->inputs, &idx)); i; i = PA_SINK_INPUT(pa_idxset_next(s->inputs, &idx))) { - pa_cvolume remapped_new_volume; - - remapped_new_volume = *new_volume; - pa_cvolume_remap(&remapped_new_volume, &s->channel_map, &i->channel_map); - compute_new_soft_volume(i, &remapped_new_volume); - - /* We don't copy soft_volume to the thread_info data here - * (i.e. issue PA_SINK_INPUT_MESSAGE_SET_VOLUME) because we - * want the update to be atomically with the sink volume - * update, hence we do it within the pa_sink_set_volume() call - * below */ - } + /* Then, let's update the real ratios/soft volumes of all inputs + * connected to this sink */ + compute_real_ratios(s); } /* Called from main thread */ -void pa_sink_propagate_flat_volume(pa_sink *s) { +static void propagate_reference_volume(pa_sink *s) { pa_sink_input *i; uint32_t idx; @@ -1323,64 +1367,77 @@ void pa_sink_propagate_flat_volume(pa_sink *s) { * caused by a sink input volume change. We need to fix up the * sink input volumes accordingly */ - for (i = PA_SINK_INPUT(pa_idxset_first(s->inputs, &idx)); i; i = PA_SINK_INPUT(pa_idxset_next(s->inputs, &idx))) { - pa_cvolume sink_volume, new_virtual_volume; - unsigned c; - - /* This basically calculates i->virtual_volume := i->relative_volume * s->virtual_volume */ - - sink_volume = s->virtual_volume; - pa_cvolume_remap(&sink_volume, &s->channel_map, &i->channel_map); - - for (c = 0; c < i->sample_spec.channels; c++) - new_virtual_volume.values[c] = pa_sw_volume_from_linear( - i->relative_volume[c] * - pa_sw_volume_to_linear(sink_volume.values[c])); + PA_IDXSET_FOREACH(i, s->inputs, idx) { + pa_cvolume old_volume, remapped; - new_virtual_volume.channels = i->sample_spec.channels; + old_volume = i->volume; - if (!pa_cvolume_equal(&new_virtual_volume, &i->virtual_volume)) { - i->virtual_volume = new_virtual_volume; + /* This basically calculates: + * + * i->volume := s->reference_volume * i->reference_ratio */ - /* Hmm, the soft volume might no longer actually match - * what has been chosen as new virtual volume here, - * especially when the old volume was - * PA_VOLUME_MUTED. Hence let's recalculate the soft - * volumes here. */ - compute_new_soft_volume(i, &sink_volume); + remapped = s->reference_volume; + pa_cvolume_remap(&remapped, &s->channel_map, &i->channel_map); + pa_sw_cvolume_multiply(&i->volume, &remapped, &i->reference_ratio); - /* The virtual volume changed, let's tell people so */ + /* The reference volume changed, let's tell people so */ + if (!pa_cvolume_equal(&old_volume, &i->volume)) pa_subscription_post(i->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index); - } } - - /* If the soft_volume of any of the sink inputs got changed, let's - * make sure the thread copies are synced up. */ - pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SYNC_VOLUMES, NULL, 0, NULL) == 0); } /* Called from main thread */ -void pa_sink_set_volume(pa_sink *s, const pa_cvolume *volume, pa_bool_t propagate, pa_bool_t sendmsg, pa_bool_t become_reference, pa_bool_t save) { - pa_bool_t virtual_volume_changed; +void pa_sink_set_volume( + pa_sink *s, + const pa_cvolume *volume, + pa_bool_t sendmsg, + pa_bool_t save) { + + pa_cvolume old_reference_volume; + pa_bool_t reference_changed; pa_sink_assert_ref(s); pa_assert_ctl_context(); pa_assert(PA_SINK_IS_LINKED(s->state)); - pa_assert(volume); - pa_assert(pa_cvolume_valid(volume)); - pa_assert(pa_cvolume_compatible(volume, &s->sample_spec)); + pa_assert(!volume || pa_cvolume_valid(volume)); + pa_assert(!volume || pa_cvolume_compatible(volume, &s->sample_spec)); + pa_assert(volume || (s->flags & PA_SINK_FLAT_VOLUME)); + + /* If volume is NULL we synchronize the sink's real and reference + * volumes with the stream volumes. If it is not NULL we update + * the reference_volume with it. */ + + old_reference_volume = s->reference_volume; + + if (volume) { + + s->reference_volume = *volume; + + if (s->flags & PA_SINK_FLAT_VOLUME) { + /* OK, propagate this volume change back to the inputs */ + propagate_reference_volume(s); + + /* And now recalculate the real volume */ + compute_real_volume(s); + } else + s->real_volume = s->reference_volume; + + } else { + pa_assert(s->flags & PA_SINK_FLAT_VOLUME); + + /* Ok, let's determine the new real volume */ + compute_real_volume(s); - virtual_volume_changed = !pa_cvolume_equal(volume, &s->virtual_volume); - s->virtual_volume = *volume; - s->save_volume = (!virtual_volume_changed && s->save_volume) || save; + /* Let's 'push' the reference volume if necessary */ + pa_cvolume_merge(&s->reference_volume, &s->reference_volume, &s->real_volume); - if (become_reference) - s->reference_volume = s->virtual_volume; + /* We need to fix the reference ratios of all streams now that + * we changed the reference volume */ + compute_reference_ratios(s); + } - /* Propagate this volume change back to the inputs */ - if (virtual_volume_changed) - if (propagate && (s->flags & PA_SINK_FLAT_VOLUME)) - pa_sink_propagate_flat_volume(s); + reference_changed = !pa_cvolume_equal(&old_reference_volume, &s->reference_volume); + s->save_volume = (!reference_changed && s->save_volume) || save; if (s->set_volume) { /* If we have a function set_volume(), then we do not apply a @@ -1393,13 +1450,13 @@ void pa_sink_set_volume(pa_sink *s, const pa_cvolume *volume, pa_bool_t propagat } else /* If we have no function set_volume(), then the soft volume * becomes the virtual volume */ - s->soft_volume = s->virtual_volume; + s->soft_volume = s->real_volume; /* This tells the sink that soft and/or virtual volume changed */ if (sendmsg) pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_VOLUME, NULL, 0, NULL) == 0); - if (virtual_volume_changed) + if (reference_changed) pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index); } @@ -1407,67 +1464,114 @@ void pa_sink_set_volume(pa_sink *s, const pa_cvolume *volume, pa_bool_t propagat void pa_sink_set_soft_volume(pa_sink *s, const pa_cvolume *volume) { pa_sink_assert_ref(s); pa_assert_ctl_context(); - pa_assert(volume); - s->soft_volume = *volume; + if (!volume) + pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels); + else + s->soft_volume = *volume; if (PA_SINK_IS_LINKED(s->state)) pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_VOLUME, NULL, 0, NULL) == 0); else - s->thread_info.soft_volume = *volume; + s->thread_info.soft_volume = s->soft_volume; } -/* Called from main thread */ -const pa_cvolume *pa_sink_get_volume(pa_sink *s, pa_bool_t force_refresh, pa_bool_t reference) { +static void propagate_real_volume(pa_sink *s, const pa_cvolume *old_real_volume) { + pa_sink_input *i; + uint32_t idx; + pa_cvolume old_reference_volume; + pa_sink_assert_ref(s); pa_assert_ctl_context(); pa_assert(PA_SINK_IS_LINKED(s->state)); - if (s->refresh_volume || force_refresh) { - struct pa_cvolume old_virtual_volume = s->virtual_volume; + /* This is called when the hardware's real volume changes due to + * some external event. We copy the real volume into our + * reference volume and then rebuild the stream volumes based on + * i->real_ratio which should stay fixed. */ - if (s->get_volume) - s->get_volume(s); + if (pa_cvolume_equal(old_real_volume, &s->real_volume)) + return; - pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_VOLUME, NULL, 0, NULL) == 0); + old_reference_volume = s->reference_volume; - if (!pa_cvolume_equal(&old_virtual_volume, &s->virtual_volume)) { + /* 1. Make the real volume the reference volume */ + s->reference_volume = s->real_volume; - s->reference_volume = s->virtual_volume; + if (s->flags & PA_SINK_FLAT_VOLUME) { - /* Something got changed in the hardware. It probably - * makes sense to save changed hw settings given that hw - * volume changes not triggered by PA are almost certainly - * done by the user. */ - s->save_volume = TRUE; + PA_IDXSET_FOREACH(i, s->inputs, idx) { + pa_cvolume old_volume, remapped; - if (s->flags & PA_SINK_FLAT_VOLUME) - pa_sink_propagate_flat_volume(s); + old_volume = i->volume; - pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index); + /* 2. Since the sink's reference and real volumes are equal + * now our ratios should be too. */ + i->reference_ratio = i->real_ratio; + + /* 3. Recalculate the new stream reference volume based on the + * reference ratio and the sink's reference volume. + * + * This basically calculates: + * + * i->volume = s->reference_volume * i->reference_ratio + * + * This is identical to propagate_reference_volume() */ + remapped = s->reference_volume; + pa_cvolume_remap(&remapped, &s->channel_map, &i->channel_map); + pa_sw_cvolume_multiply(&i->volume, &remapped, &i->reference_ratio); + + /* Notify if something changed */ + if (!pa_cvolume_equal(&old_volume, &i->volume)) + pa_subscription_post(i->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index); } } - return reference ? &s->reference_volume : &s->virtual_volume; + /* Something got changed in the hardware. It probably makes sense + * to save changed hw settings given that hw volume changes not + * triggered by PA are almost certainly done by the user. */ + s->save_volume = TRUE; + + if (!pa_cvolume_equal(&old_reference_volume, &s->reference_volume)) + pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index); } /* Called from main thread */ -void pa_sink_volume_changed(pa_sink *s, const pa_cvolume *new_volume) { +const pa_cvolume *pa_sink_get_volume(pa_sink *s, pa_bool_t force_refresh) { pa_sink_assert_ref(s); pa_assert_ctl_context(); pa_assert(PA_SINK_IS_LINKED(s->state)); - /* The sink implementor may call this if the volume changed to make sure everyone is notified */ - if (pa_cvolume_equal(&s->virtual_volume, new_volume)) - return; + if (s->refresh_volume || force_refresh) { + struct pa_cvolume old_real_volume; - s->reference_volume = s->virtual_volume = *new_volume; - s->save_volume = TRUE; + old_real_volume = s->real_volume; - if (s->flags & PA_SINK_FLAT_VOLUME) - pa_sink_propagate_flat_volume(s); + if (s->get_volume) + s->get_volume(s); - pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index); + pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_VOLUME, NULL, 0, NULL) == 0); + + propagate_real_volume(s, &old_real_volume); + } + + return &s->reference_volume; +} + +/* Called from main thread */ +void pa_sink_volume_changed(pa_sink *s, const pa_cvolume *new_real_volume) { + pa_cvolume old_real_volume; + + pa_sink_assert_ref(s); + pa_assert_ctl_context(); + pa_assert(PA_SINK_IS_LINKED(s->state)); + + /* The sink implementor may call this if the volume changed to make sure everyone is notified */ + + old_real_volume = s->real_volume; + s->real_volume = *new_real_volume; + + propagate_real_volume(s, &old_real_volume); } /* Called from main thread */ @@ -1516,7 +1620,6 @@ pa_bool_t pa_sink_get_mute(pa_sink *s, pa_bool_t force_refresh) { } } - return s->muted; } |