Rewrite PulseAudio backend into a threaded class

Converts the Mixer PulseAudio backend from a C library to a PaClient
class which runs in its own QThread.  This faciliates isolation of
PaControlModel updates to the QML thread where they belong. It also
provides the foundation for runtime updates of the model and reuse
of the PaClient class in other apps.

AGL-Bug: SPEC-548
Change-Id: I13c4c220fde2fd4bc4aea2e04f39152a963b5fa0
Signed-off-by: Matt Porter <mporter@konsulko.com>

1 files changed, 0 insertions, 225 deletions

diff --git a/app/pac.c b/app/pac.c
deleted file mode 100644
index 83b4604..0000000
--- a/app/pac.c
+++ /dev/null
@@ -1,225 +0,0 @@
-/*
- * Copyright (C) 2016 Konsulko Group
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <signal.h>
-#include <errno.h>
-#include <unistd.h>
-#include <limits.h>
-#include <assert.h>
-
-#include <pulse/pulseaudio.h>
-#include <sys/queue.h>
-
-#include "pacontrolmodel.h"
-#include "pac.h"
-
-/* FIXME: move these into a pac context */
-static pa_threaded_mainloop* m;
-TAILQ_HEAD(pac_cstateq, pac_cstate);
-static struct pac_cstateq cstateq;
-
-static void add_one_cstate(int type, int index, const pa_cvolume *cvolume)
-{
-	struct pac_cstate *cstate;
-	int i;
-
-	cstate = pa_xnew(struct pac_cstate, 1);
-	cstate->type = type;
-	cstate->index = index;
-	cstate->cvolume.channels = cvolume->channels;
-	for (i = 0; i < cvolume->channels; i++)
-		cstate->cvolume.values[i] = cvolume->values[i];
-
-	TAILQ_INSERT_TAIL(&cstateq, cstate, tailq);
-}
-
-static void get_source_list_cb(pa_context *c,
-		const pa_source_info *i,
-		int eol,
-		void *data)
-{
-	int chan;
-
-	if (eol < 0) {
-		fprintf(stderr, "get source list: %s\n",
-				pa_strerror(pa_context_errno(c)));
-
-		pa_threaded_mainloop_stop(m);
-		return;
-	}
-
-	if (!eol) {
-		assert(i);
-		add_one_cstate(C_SOURCE, i->index, &i->volume);
-		for (chan = 0; chan < i->channel_map.channels; chan++) {
-			add_one_control(data, i->index, i->description,
-					C_SOURCE, chan,
-					channel_position_string[i->channel_map.map[chan]],
-					i->volume.values[chan]);
-		}
-	}
-}
-
-static void get_sink_list_cb(pa_context *c,
-		const pa_sink_info *i,
-		int eol,
-		void *data)
-{
-	int chan;
-
-	if(eol < 0) {
-		fprintf(stderr, "get sink list: %s\n",
-				pa_strerror(pa_context_errno(c)));
-
-		pa_threaded_mainloop_stop(m);
-		return;
-	}
-
-	if(!eol) {
-		assert(i);
-		add_one_cstate(C_SINK, i->index, &i->volume);
-		for (chan = 0; chan < i->channel_map.channels; chan++) {
-			add_one_control(data, i->index, i->description,
-					C_SINK, chan,
-					channel_position_string[i->channel_map.map[chan]],
-					i->volume.values[chan]);
-		}
-	}
-}
-
-static void context_state_cb(pa_context *c, void *data) {
-	pa_operation *o;
-
-	assert(c);
-	switch (pa_context_get_state(c)) {
-		case PA_CONTEXT_CONNECTING:
-		case PA_CONTEXT_AUTHORIZING:
-		case PA_CONTEXT_SETTING_NAME:
-			break;
-		case PA_CONTEXT_READY:
-			/* Fetch the controls of interest */
-			if (!(o = pa_context_get_source_info_list(c, get_source_list_cb, data))) {
-				fprintf(stderr, "get source info list: %s\n",
-					pa_strerror(pa_context_errno(c)));
-				return;
-			}
-			pa_operation_unref(o);
-			if (!(o = pa_context_get_sink_info_list(c, get_sink_list_cb, data))) {
-				fprintf(stderr, "get sink info list: %s\n",
-					pa_strerror(pa_context_errno(c)));
-				return;
-			}
-			break;
-		case PA_CONTEXT_TERMINATED:
-			pa_threaded_mainloop_stop(m);
-			break;
-		case PA_CONTEXT_FAILED:
-		default:
-			fprintf(stderr, "PA connection failed: %s\n",
-					pa_strerror(pa_context_errno(c)));
-			pa_threaded_mainloop_stop(m);
-	}
-}
-
-static void pac_set_source_volume_cb(pa_context *c, int success, void *userdata __attribute__((unused))) {
-	assert(c);
-	if (!success)
-		fprintf(stderr, "Set source volume: %s\n",
-				pa_strerror(pa_context_errno(c)));
-}
-
-static void pac_set_sink_volume_cb(pa_context *c, int success, void *userdata __attribute__((unused))) {
-	assert(c);
-	if (!success)
-		fprintf(stderr, "Set source volume: %s\n",
-				pa_strerror(pa_context_errno(c)));
-}
-
-void pac_set_volume(pa_context *c, uint32_t type, uint32_t idx, uint32_t channel, uint32_t volume)
-{
-	pa_operation *o;
-	struct pac_cstate *cstate;
-
-	TAILQ_FOREACH(cstate, &cstateq, tailq)
-		if (cstate->index == idx)
-			break;
-	cstate->cvolume.values[channel] = volume;
-
-	if (type == C_SOURCE) {
-		if (!(o = pa_context_set_source_volume_by_index(c, idx, &cstate->cvolume, pac_set_source_volume_cb, NULL))) {
-			fprintf(stderr, "set source #%d channel #%d volume: %s\n",
-				idx, channel, pa_strerror(pa_context_errno(c)));
-			return;
-		}
-		pa_operation_unref(o);
-	} else if (type == C_SINK) {
-		if (!(o = pa_context_set_sink_volume_by_index(c, idx, &cstate->cvolume, pac_set_sink_volume_cb, NULL))) {
-			fprintf(stderr, "set sink #%d channel #%d volume: %s\n",
-				idx, channel, pa_strerror(pa_context_errno(c)));
-			return;
-		}
-		pa_operation_unref(o);
-	}
-}
-
-pa_context *pac_init(void *this, const char *name) {
-	pa_context *c;
-	pa_mainloop_api *mapi;
-	char *server = NULL;
-	char *client = pa_xstrdup(name);
-
-	TAILQ_INIT(&cstateq);
-
-	if (!(m = pa_threaded_mainloop_new())) {
-		fprintf(stderr, "pa_mainloop_new() failed.\n");
-		return NULL;
-	}
-
-	pa_threaded_mainloop_set_name(m, "pa_mainloop");
-	mapi = pa_threaded_mainloop_get_api(m);
-
-	if (!(c = pa_context_new(mapi, client))) {
-		fprintf(stderr, "pa_context_new() failed.\n");
-		goto exit;
-	}
-
-	pa_context_set_state_callback(c, context_state_cb, this);
-	if (pa_context_connect(c, server, 0, NULL) < 0) {
-		fprintf(stderr, "pa_context_connect(): %s", pa_strerror(pa_context_errno(c)));
-		goto exit;
-	}
-
-	if (pa_threaded_mainloop_start(m) < 0) {
-		fprintf(stderr, "pa_mainloop_run() failed.\n");
-		goto exit;
-	}
-
-	return c;
-
-exit:
-	if (c)
-		pa_context_unref(c);
-
-	if (m)
-		pa_threaded_mainloop_free(m);
-
-	pa_xfree(client);
-
-	return NULL;
-}