tests: Add a trivial test for the extended API

This is just sync-playback.c modified to use the extended API. We need
something more sophisticated for properly testing the compressed
formats, but that is a non-trivial task in itself.

src/Makefile.am

@@ -274,6 +274,7 @@ TESTS_BINARIES = \
 		mcalign-test \
 		pacat-simple \
 		parec-simple \
+		extended-test \
 		strlist-test \
 		close-test \
 		voltest \
@@ -439,6 +440,11 @@ parec_simple_LDADD = $(AM_LDADD) libpulse.la libpulse-simple.la libpulsecommon-@
 parec_simple_CFLAGS = $(AM_CFLAGS)
 parec_simple_LDFLAGS = $(AM_LDFLAGS) $(BINLDFLAGS)
 
+extended_test_SOURCES = tests/extended-test.c
+extended_test_LDADD = $(AM_LDADD) libpulse.la libpulsecommon-@PA_MAJORMINOR@.la
+extended_test_CFLAGS = $(AM_CFLAGS)
+extended_test_LDFLAGS = $(AM_LDFLAGS) $(BINLDFLAGS)
+
 strlist_test_SOURCES = tests/strlist-test.c
 strlist_test_CFLAGS = $(AM_CFLAGS)
 strlist_test_LDADD = $(AM_LDADD) $(WINSOCK_LIBS) libpulsecore-@PA_MAJORMINOR@.la libpulse.la libpulsecommon-@PA_MAJORMINOR@.la

src/tests/extended-test.c

@@ -0,0 +1,197 @@
+/***
+  This file is part of PulseAudio.
+
+  PulseAudio is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Lesser General Public License as published
+  by the Free Software Foundation; either version 2.1 of the License,
+  or (at your option) any later version.
+
+  PulseAudio is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with PulseAudio; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+  USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <signal.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include <math.h>
+
+#include <pulse/pulseaudio.h>
+#include <pulse/mainloop.h>
+
+#define NSTREAMS 4
+#define SINE_HZ 440
+#define SAMPLE_HZ 8000
+
+static pa_context *context = NULL;
+static pa_stream *streams[NSTREAMS];
+static pa_mainloop_api *mainloop_api = NULL;
+
+static float data[SAMPLE_HZ]; /* one second space */
+
+static int n_streams_ready = 0;
+
+static const pa_buffer_attr buffer_attr = {
+    .maxlength = SAMPLE_HZ*sizeof(float)*NSTREAMS, /* exactly space for the entire play time */
+    .tlength = (uint32_t) -1,
+    .prebuf = 0, /* Setting prebuf to 0 guarantees us the the streams will run synchronously, no matter what */
+    .minreq = (uint32_t) -1,
+    .fragsize = 0
+};
+
+static void nop_free_cb(void *p) {}
+
+static void underflow_cb(struct pa_stream *s, void *userdata) {
+    int i = (int) (long) userdata;
+
+    fprintf(stderr, "Stream %i finished\n", i);
+
+    if (++n_streams_ready >= 2*NSTREAMS) {
+        fprintf(stderr, "We're done\n");
+        mainloop_api->quit(mainloop_api, 0);
+    }
+}
+
+/* This routine is called whenever the stream state changes */
+static void stream_state_callback(pa_stream *s, void *userdata) {
+    assert(s);
+
+    switch (pa_stream_get_state(s)) {
+        case PA_STREAM_UNCONNECTED:
+        case PA_STREAM_CREATING:
+        case PA_STREAM_TERMINATED:
+            break;
+
+        case PA_STREAM_READY: {
+
+            int r, i = (int) (long) userdata;
+
+            fprintf(stderr, "Writing data to stream %i.\n", i);
+
+            r = pa_stream_write(s, data, sizeof(data), nop_free_cb, (int64_t) sizeof(data) * (int64_t) i, PA_SEEK_ABSOLUTE);
+            assert(r == 0);
+
+            /* Be notified when this stream is drained */
+            pa_stream_set_underflow_callback(s, underflow_cb, userdata);
+
+            /* All streams have been set up, let's go! */
+            if (++n_streams_ready >= NSTREAMS) {
+                fprintf(stderr, "Uncorking\n");
+                pa_operation_unref(pa_stream_cork(s, 0, NULL, NULL));
+            }
+
+            break;
+        }
+
+        default:
+        case PA_STREAM_FAILED:
+            fprintf(stderr, "Stream error: %s\n", pa_strerror(pa_context_errno(pa_stream_get_context(s))));
+            abort();
+    }
+}
+
+/* This is called whenever the context status changes */
+static void context_state_callback(pa_context *c, void *userdata) {
+    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: {
+
+            int i;
+            fprintf(stderr, "Connection established.\n");
+
+            for (i = 0; i < NSTREAMS; i++) {
+                char name[64];
+                pa_format_info *formats[2] = { NULL };
+
+                formats[0] = pa_format_info_new();
+                formats[0]->encoding = PA_ENCODING_PCM;
+                pa_proplist_sets(formats[0]->plist, PA_PROP_FORMAT_SAMPLE_FORMAT, pa_sample_format_to_string(PA_SAMPLE_FLOAT32));
+                pa_proplist_setf(formats[0]->plist, PA_PROP_FORMAT_RATE, "%u", SAMPLE_HZ);
+                pa_proplist_setf(formats[0]->plist, PA_PROP_FORMAT_CHANNELS, "%u", 1);
+
+                fprintf(stderr, "Creating stream %i\n", i);
+
+                snprintf(name, sizeof(name), "stream #%i", i);
+
+                streams[i] = pa_stream_new_extended(c, name, formats, NULL);
+                assert(streams[i]);
+                pa_stream_set_state_callback(streams[i], stream_state_callback, (void*) (long) i);
+                pa_stream_connect_playback(streams[i], NULL, &buffer_attr, PA_STREAM_START_CORKED, NULL, i == 0 ? NULL : streams[0]);
+            }
+
+            break;
+        }
+
+        case PA_CONTEXT_TERMINATED:
+            mainloop_api->quit(mainloop_api, 0);
+            break;
+
+        case PA_CONTEXT_FAILED:
+        default:
+            fprintf(stderr, "Context error: %s\n", pa_strerror(pa_context_errno(c)));
+            abort();
+    }
+}
+
+int main(int argc, char *argv[]) {
+    pa_mainloop* m = NULL;
+    int i, ret = 0;
+
+    for (i = 0; i < SAMPLE_HZ; i++)
+        data[i] = (float) sin(((double) i/SAMPLE_HZ)*2*M_PI*SINE_HZ)/2;
+
+    for (i = 0; i < NSTREAMS; i++)
+        streams[i] = NULL;
+
+    /* Set up a new main loop */
+    m = pa_mainloop_new();
+    assert(m);
+
+    mainloop_api = pa_mainloop_get_api(m);
+
+    context = pa_context_new(mainloop_api, argv[0]);
+    assert(context);
+
+    pa_context_set_state_callback(context, context_state_callback, NULL);
+
+    /* Connect the context */
+    if (pa_context_connect(context, NULL, 0, NULL) < 0) {
+        fprintf(stderr, "pa_context_connect() failed.\n");
+        goto quit;
+    }
+
+    if (pa_mainloop_run(m, &ret) < 0)
+        fprintf(stderr, "pa_mainloop_run() failed.\n");
+
+quit:
+    pa_context_unref(context);
+
+    for (i = 0; i < NSTREAMS; i++)
+        if (streams[i])
+            pa_stream_unref(streams[i]);
+
+    pa_mainloop_free(m);
+
+    return ret;
+}