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-rw-r--r--src/pulse/simple.c455
1 files changed, 455 insertions, 0 deletions
diff --git a/src/pulse/simple.c b/src/pulse/simple.c
new file mode 100644
index 00000000..a41881bb
--- /dev/null
+++ b/src/pulse/simple.c
@@ -0,0 +1,455 @@
+/* $Id$ */
+
+/***
+ 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 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 <stdio.h>
+#include <string.h>
+#include <assert.h>
+#include <stdlib.h>
+
+#include <pulse/pulseaudio.h>
+#include <pulse/thread-mainloop.h>
+#include <pulse/xmalloc.h>
+
+#include <pulsecore/native-common.h>
+#include <pulsecore/log.h>
+
+#include "simple.h"
+
+struct pa_simple {
+ pa_threaded_mainloop *mainloop;
+ pa_context *context;
+ pa_stream *stream;
+ pa_stream_direction_t direction;
+
+ const void *read_data;
+ size_t read_index, read_length;
+
+ int operation_success;
+};
+
+#define CHECK_VALIDITY_RETURN_ANY(rerror, expression, error, ret) do { \
+if (!(expression)) { \
+ if (rerror) \
+ *(rerror) = error; \
+ return (ret); \
+ } \
+} while(0);
+
+#define CHECK_SUCCESS_GOTO(p, rerror, expression, label) do { \
+if (!(expression)) { \
+ if (rerror) \
+ *(rerror) = pa_context_errno((p)->context); \
+ goto label; \
+ } \
+} while(0);
+
+#define CHECK_DEAD_GOTO(p, rerror, label) do { \
+if (!(p)->context || pa_context_get_state((p)->context) != PA_CONTEXT_READY || \
+ !(p)->stream || pa_stream_get_state((p)->stream) != PA_STREAM_READY) { \
+ if (((p)->context && pa_context_get_state((p)->context) == PA_CONTEXT_FAILED) || \
+ ((p)->stream && pa_stream_get_state((p)->stream) == PA_STREAM_FAILED)) { \
+ if (rerror) \
+ *(rerror) = pa_context_errno((p)->context); \
+ } else \
+ if (rerror) \
+ *(rerror) = PA_ERR_BADSTATE; \
+ goto label; \
+ } \
+} while(0);
+
+static void context_state_cb(pa_context *c, void *userdata) {
+ pa_simple *p = userdata;
+ assert(c);
+ assert(p);
+
+ switch (pa_context_get_state(c)) {
+ case PA_CONTEXT_READY:
+ case PA_CONTEXT_TERMINATED:
+ case PA_CONTEXT_FAILED:
+ pa_threaded_mainloop_signal(p->mainloop, 0);
+ break;
+
+ case PA_CONTEXT_UNCONNECTED:
+ case PA_CONTEXT_CONNECTING:
+ case PA_CONTEXT_AUTHORIZING:
+ case PA_CONTEXT_SETTING_NAME:
+ break;
+ }
+}
+
+static void stream_state_cb(pa_stream *s, void * userdata) {
+ pa_simple *p = userdata;
+ assert(s);
+ assert(p);
+
+ switch (pa_stream_get_state(s)) {
+
+ case PA_STREAM_READY:
+ case PA_STREAM_FAILED:
+ case PA_STREAM_TERMINATED:
+ pa_threaded_mainloop_signal(p->mainloop, 0);
+ break;
+
+ case PA_STREAM_UNCONNECTED:
+ case PA_STREAM_CREATING:
+ break;
+ }
+}
+
+static void stream_request_cb(pa_stream *s, size_t length, void *userdata) {
+ pa_simple *p = userdata;
+ assert(p);
+
+ pa_threaded_mainloop_signal(p->mainloop, 0);
+}
+
+static void stream_latency_update_cb(pa_stream *s, void *userdata) {
+ pa_simple *p = userdata;
+
+ assert(p);
+
+ pa_threaded_mainloop_signal(p->mainloop, 0);
+}
+
+pa_simple* pa_simple_new(
+ const char *server,
+ const char *name,
+ pa_stream_direction_t dir,
+ const char *dev,
+ const char *stream_name,
+ const pa_sample_spec *ss,
+ const pa_channel_map *map,
+ const pa_buffer_attr *attr,
+ int *rerror) {
+
+ pa_simple *p;
+ int error = PA_ERR_INTERNAL, r;
+
+ CHECK_VALIDITY_RETURN_ANY(rerror, !server || *server, PA_ERR_INVALID, NULL);
+ CHECK_VALIDITY_RETURN_ANY(rerror, dir == PA_STREAM_PLAYBACK || dir == PA_STREAM_RECORD, PA_ERR_INVALID, NULL);
+ CHECK_VALIDITY_RETURN_ANY(rerror, !dev || *dev, PA_ERR_INVALID, NULL);
+ CHECK_VALIDITY_RETURN_ANY(rerror, ss && pa_sample_spec_valid(ss), PA_ERR_INVALID, NULL);
+ CHECK_VALIDITY_RETURN_ANY(rerror, !map || (pa_channel_map_valid(map) && map->channels == ss->channels), PA_ERR_INVALID, NULL)
+
+ p = pa_xnew(pa_simple, 1);
+ p->context = NULL;
+ p->stream = NULL;
+ p->direction = dir;
+ p->read_data = NULL;
+ p->read_index = p->read_length = 0;
+
+ if (!(p->mainloop = pa_threaded_mainloop_new()))
+ goto fail;
+
+ if (!(p->context = pa_context_new(pa_threaded_mainloop_get_api(p->mainloop), name)))
+ goto fail;
+
+ pa_context_set_state_callback(p->context, context_state_cb, p);
+
+ if (pa_context_connect(p->context, server, 0, NULL) < 0) {
+ error = pa_context_errno(p->context);
+ goto fail;
+ }
+
+ pa_threaded_mainloop_lock(p->mainloop);
+
+ if (pa_threaded_mainloop_start(p->mainloop) < 0)
+ goto unlock_and_fail;
+
+ /* Wait until the context is ready */
+ pa_threaded_mainloop_wait(p->mainloop);
+
+ if (pa_context_get_state(p->context) != PA_CONTEXT_READY) {
+ error = pa_context_errno(p->context);
+ goto unlock_and_fail;
+ }
+
+ if (!(p->stream = pa_stream_new(p->context, stream_name, ss, map))) {
+ error = pa_context_errno(p->context);
+ goto unlock_and_fail;
+ }
+
+ pa_stream_set_state_callback(p->stream, stream_state_cb, p);
+ pa_stream_set_read_callback(p->stream, stream_request_cb, p);
+ pa_stream_set_write_callback(p->stream, stream_request_cb, p);
+ pa_stream_set_latency_update_callback(p->stream, stream_latency_update_cb, p);
+
+ if (dir == PA_STREAM_PLAYBACK)
+ r = pa_stream_connect_playback(p->stream, dev, attr, PA_STREAM_INTERPOLATE_TIMING|PA_STREAM_AUTO_TIMING_UPDATE, NULL, NULL);
+ else
+ r = pa_stream_connect_record(p->stream, dev, attr, PA_STREAM_INTERPOLATE_TIMING|PA_STREAM_AUTO_TIMING_UPDATE);
+
+ if (r < 0) {
+ error = pa_context_errno(p->context);
+ goto unlock_and_fail;
+ }
+
+ /* Wait until the stream is ready */
+ pa_threaded_mainloop_wait(p->mainloop);
+
+ /* Wait until the stream is ready */
+ if (pa_stream_get_state(p->stream) != PA_STREAM_READY) {
+ error = pa_context_errno(p->context);
+ goto unlock_and_fail;
+ }
+
+ pa_threaded_mainloop_unlock(p->mainloop);
+
+ return p;
+
+unlock_and_fail:
+ pa_threaded_mainloop_unlock(p->mainloop);
+
+fail:
+ if (rerror)
+ *rerror = error;
+ pa_simple_free(p);
+ return NULL;
+}
+
+void pa_simple_free(pa_simple *s) {
+ assert(s);
+
+ if (s->mainloop)
+ pa_threaded_mainloop_stop(s->mainloop);
+
+ if (s->stream)
+ pa_stream_unref(s->stream);
+
+ if (s->context)
+ pa_context_unref(s->context);
+
+ if (s->mainloop)
+ pa_threaded_mainloop_free(s->mainloop);
+
+ pa_xfree(s);
+}
+
+int pa_simple_write(pa_simple *p, const void*data, size_t length, int *rerror) {
+ assert(p);
+
+ CHECK_VALIDITY_RETURN_ANY(rerror, p->direction == PA_STREAM_PLAYBACK, PA_ERR_BADSTATE, -1);
+ CHECK_VALIDITY_RETURN_ANY(rerror, data && length, PA_ERR_INVALID, -1);
+
+ pa_threaded_mainloop_lock(p->mainloop);
+
+ CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
+
+ while (length > 0) {
+ size_t l;
+ int r;
+
+ while (!(l = pa_stream_writable_size(p->stream))) {
+ pa_threaded_mainloop_wait(p->mainloop);
+ CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
+ }
+
+ CHECK_SUCCESS_GOTO(p, rerror, l != (size_t) -1, unlock_and_fail);
+
+ if (l > length)
+ l = length;
+
+ r = pa_stream_write(p->stream, data, l, NULL, 0, PA_SEEK_RELATIVE);
+ CHECK_SUCCESS_GOTO(p, rerror, r >= 0, unlock_and_fail);
+
+ data = (const uint8_t*) data + l;
+ length -= l;
+ }
+
+ pa_threaded_mainloop_unlock(p->mainloop);
+ return 0;
+
+unlock_and_fail:
+ pa_threaded_mainloop_unlock(p->mainloop);
+ return -1;
+}
+
+int pa_simple_read(pa_simple *p, void*data, size_t length, int *rerror) {
+ assert(p);
+
+ CHECK_VALIDITY_RETURN_ANY(rerror, p->direction == PA_STREAM_RECORD, PA_ERR_BADSTATE, -1);
+ CHECK_VALIDITY_RETURN_ANY(rerror, data && length, PA_ERR_INVALID, -1);
+
+ pa_threaded_mainloop_lock(p->mainloop);
+
+ CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
+
+ while (length > 0) {
+ size_t l;
+
+ while (!p->read_data) {
+ int r;
+
+ r = pa_stream_peek(p->stream, &p->read_data, &p->read_length);
+ CHECK_SUCCESS_GOTO(p, rerror, r == 0, unlock_and_fail);
+
+ if (!p->read_data) {
+ pa_threaded_mainloop_wait(p->mainloop);
+ CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
+ } else
+ p->read_index = 0;
+ }
+
+ l = p->read_length < length ? p->read_length : length;
+ memcpy(data, (const uint8_t*) p->read_data+p->read_index, l);
+
+ data = (uint8_t*) data + l;
+ length -= l;
+
+ p->read_index += l;
+ p->read_length -= l;
+
+ if (!p->read_length) {
+ int r;
+
+ r = pa_stream_drop(p->stream);
+ p->read_data = NULL;
+ p->read_length = 0;
+ p->read_index = 0;
+
+ CHECK_SUCCESS_GOTO(p, rerror, r == 0, unlock_and_fail);
+ }
+ }
+
+ pa_threaded_mainloop_unlock(p->mainloop);
+ return 0;
+
+unlock_and_fail:
+ pa_threaded_mainloop_unlock(p->mainloop);
+ return -1;
+}
+
+static void success_cb(pa_stream *s, int success, void *userdata) {
+ pa_simple *p = userdata;
+
+ assert(s);
+ assert(p);
+
+ p->operation_success = success;
+ pa_threaded_mainloop_signal(p->mainloop, 0);
+}
+
+int pa_simple_drain(pa_simple *p, int *rerror) {
+ pa_operation *o = NULL;
+
+ assert(p);
+
+ CHECK_VALIDITY_RETURN_ANY(rerror, p->direction == PA_STREAM_PLAYBACK, PA_ERR_BADSTATE, -1);
+
+ pa_threaded_mainloop_lock(p->mainloop);
+ CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
+
+ o = pa_stream_drain(p->stream, success_cb, p);
+ CHECK_SUCCESS_GOTO(p, rerror, o, unlock_and_fail);
+
+ p->operation_success = 0;
+ while (pa_operation_get_state(o) != PA_OPERATION_DONE) {
+ pa_threaded_mainloop_wait(p->mainloop);
+ CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
+ }
+ CHECK_SUCCESS_GOTO(p, rerror, p->operation_success, unlock_and_fail);
+
+ pa_operation_unref(o);
+ pa_threaded_mainloop_unlock(p->mainloop);
+
+ return 0;
+
+unlock_and_fail:
+
+ if (o) {
+ pa_operation_cancel(o);
+ pa_operation_unref(o);
+ }
+
+ pa_threaded_mainloop_unlock(p->mainloop);
+ return -1;
+}
+
+int pa_simple_flush(pa_simple *p, int *rerror) {
+ pa_operation *o = NULL;
+
+ assert(p);
+
+ CHECK_VALIDITY_RETURN_ANY(rerror, p->direction == PA_STREAM_PLAYBACK, PA_ERR_BADSTATE, -1);
+
+ pa_threaded_mainloop_lock(p->mainloop);
+ CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
+
+ o = pa_stream_flush(p->stream, success_cb, p);
+ CHECK_SUCCESS_GOTO(p, rerror, o, unlock_and_fail);
+
+ p->operation_success = 0;
+ while (pa_operation_get_state(o) != PA_OPERATION_DONE) {
+ pa_threaded_mainloop_wait(p->mainloop);
+ CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
+ }
+ CHECK_SUCCESS_GOTO(p, rerror, p->operation_success, unlock_and_fail);
+
+ pa_operation_unref(o);
+ pa_threaded_mainloop_unlock(p->mainloop);
+
+ return 0;
+
+unlock_and_fail:
+
+ if (o) {
+ pa_operation_cancel(o);
+ pa_operation_unref(o);
+ }
+
+ pa_threaded_mainloop_unlock(p->mainloop);
+ return -1;
+}
+
+pa_usec_t pa_simple_get_latency(pa_simple *p, int *rerror) {
+ pa_usec_t t;
+ int negative;
+
+ assert(p);
+
+ pa_threaded_mainloop_lock(p->mainloop);
+
+ for (;;) {
+ CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
+
+ if (pa_stream_get_latency(p->stream, &t, &negative) >= 0)
+ break;
+
+ CHECK_SUCCESS_GOTO(p, rerror, pa_context_errno(p->context) == PA_ERR_NODATA, unlock_and_fail);
+
+ /* Wait until latency data is available again */
+ pa_threaded_mainloop_wait(p->mainloop);
+ }
+
+ pa_threaded_mainloop_unlock(p->mainloop);
+
+ return negative ? 0 : t;
+
+unlock_and_fail:
+
+ pa_threaded_mainloop_unlock(p->mainloop);
+ return (pa_usec_t) -1;
+}
+