Adding upstream version 14.2.upstream/14.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 512 insertions, 0 deletions

diff --git a/src/pulse/simple.c b/src/pulse/simple.c
new file mode 100644
index 0000000..38881de
--- /dev/null
+++ b/src/pulse/simple.c
@@ -0,0 +1,512 @@
+
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2004-2006 Lennart Poettering
+
+  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, see <http://www.gnu.org/licenses/>.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include <pulse/pulseaudio.h>
+#include <pulse/thread-mainloop.h>
+#include <pulse/xmalloc.h>
+
+#include <pulsecore/log.h>
+#include <pulsecore/macro.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(false);
+
+#define CHECK_SUCCESS_GOTO(p, rerror, expression, label)        \
+    do {                                                        \
+        if (!(expression)) {                                    \
+            if (rerror)                                         \
+                *(rerror) = pa_context_errno((p)->context);     \
+            goto label;                                         \
+        }                                                       \
+    } while(false);
+
+#define CHECK_DEAD_GOTO(p, rerror, label)                               \
+    do {                                                                \
+        if (!(p)->context || !PA_CONTEXT_IS_GOOD(pa_context_get_state((p)->context)) || \
+            !(p)->stream || !PA_STREAM_IS_GOOD(pa_stream_get_state((p)->stream))) { \
+            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(false);
+
+static void context_state_cb(pa_context *c, void *userdata) {
+    pa_simple *p = userdata;
+    pa_assert(c);
+    pa_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;
+    pa_assert(s);
+    pa_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;
+    pa_assert(p);
+
+    pa_threaded_mainloop_signal(p->mainloop, 0);
+}
+
+static void stream_latency_update_cb(pa_stream *s, void *userdata) {
+    pa_simple *p = userdata;
+
+    pa_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_xnew0(pa_simple, 1);
+    p->direction = dir;
+
+    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;
+
+    for (;;) {
+        pa_context_state_t state;
+
+        state = pa_context_get_state(p->context);
+
+        if (state == PA_CONTEXT_READY)
+            break;
+
+        if (!PA_CONTEXT_IS_GOOD(state)) {
+            error = pa_context_errno(p->context);
+            goto unlock_and_fail;
+        }
+
+        /* Wait until the context is ready */
+        pa_threaded_mainloop_wait(p->mainloop);
+    }
+
+    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_ADJUST_LATENCY
+                                       |PA_STREAM_AUTO_TIMING_UPDATE, NULL, NULL);
+    else
+        r = pa_stream_connect_record(p->stream, dev, attr,
+                                     PA_STREAM_INTERPOLATE_TIMING
+                                     |PA_STREAM_ADJUST_LATENCY
+                                     |PA_STREAM_AUTO_TIMING_UPDATE);
+
+    if (r < 0) {
+        error = pa_context_errno(p->context);
+        goto unlock_and_fail;
+    }
+
+    for (;;) {
+        pa_stream_state_t state;
+
+        state = pa_stream_get_state(p->stream);
+
+        if (state == PA_STREAM_READY)
+            break;
+
+        if (!PA_STREAM_IS_GOOD(state)) {
+            error = pa_context_errno(p->context);
+            goto unlock_and_fail;
+        }
+
+        /* Wait until the stream is ready */
+        pa_threaded_mainloop_wait(p->mainloop);
+    }
+
+    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) {
+    pa_assert(s);
+
+    if (s->mainloop)
+        pa_threaded_mainloop_stop(s->mainloop);
+
+    if (s->stream)
+        pa_stream_unref(s->stream);
+
+    if (s->context) {
+        pa_context_disconnect(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) {
+    pa_assert(p);
+
+    CHECK_VALIDITY_RETURN_ANY(rerror, p->direction == PA_STREAM_PLAYBACK, PA_ERR_BADSTATE, -1);
+    CHECK_VALIDITY_RETURN_ANY(rerror, data, PA_ERR_INVALID, -1);
+    CHECK_VALIDITY_RETURN_ANY(rerror, length > 0, 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, 0LL, 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) {
+    pa_assert(p);
+
+    CHECK_VALIDITY_RETURN_ANY(rerror, p->direction == PA_STREAM_RECORD, PA_ERR_BADSTATE, -1);
+    CHECK_VALIDITY_RETURN_ANY(rerror, data, PA_ERR_INVALID, -1);
+    CHECK_VALIDITY_RETURN_ANY(rerror, length > 0, 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_length <= 0) {
+                pa_threaded_mainloop_wait(p->mainloop);
+                CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
+            } else if (!p->read_data) {
+                /* There's a hole in the stream, skip it. We could generate
+                 * silence, but that wouldn't work for compressed streams. */
+                r = pa_stream_drop(p->stream);
+                CHECK_SUCCESS_GOTO(p, rerror, r == 0, 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;
+
+    pa_assert(s);
+    pa_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;
+
+    pa_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_RUNNING) {
+        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;
+
+    pa_assert(p);
+
+    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_RUNNING) {
+        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;
+
+    pa_assert(p);
+
+    pa_threaded_mainloop_lock(p->mainloop);
+
+    for (;;) {
+        int negative;
+
+        CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
+
+        if (pa_stream_get_latency(p->stream, &t, &negative) >= 0) {
+            if (p->direction == PA_STREAM_RECORD) {
+                pa_usec_t already_read;
+
+                /* pa_simple_read() calls pa_stream_peek() to get the next
+                 * chunk of audio. If the next chunk is larger than what the
+                 * pa_simple_read() caller wanted, the leftover data is stored
+                 * in p->read_data until pa_simple_read() is called again.
+                 * pa_stream_drop() won't be called until the whole chunk has
+                 * been consumed, which means that pa_stream_get_latency() will
+                 * return too large values, because the whole size of the
+                 * partially read chunk is included in the latency. Therefore,
+                 * we need to subtract the already-read amount from the
+                 * latency. */
+                already_read = pa_bytes_to_usec(p->read_index, pa_stream_get_sample_spec(p->stream));
+
+                if (!negative) {
+                    if (t > already_read)
+                        t -= already_read;
+                    else
+                        t = 0;
+                }
+            }
+
+            /* We don't have a way to report negative latencies from
+             * pa_simple_get_latency(). If the latency is negative, let's
+             * report zero. */
+            if (negative)
+                t = 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 t;
+
+unlock_and_fail:
+
+    pa_threaded_mainloop_unlock(p->mainloop);
+    return (pa_usec_t) -1;
+}