big s/polyp/pulse/g

git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@1033 fefdeb5f-60dc-0310-8127-8f9354f1896f

1 files changed, 0 insertions, 1366 deletions

diff --git a/src/polyp/stream.c b/src/polyp/stream.c
deleted file mode 100644
index 8927805e..00000000
--- a/src/polyp/stream.c
+++ /dev/null
@@ -1,1366 +0,0 @@
-/* $Id$ */
-
-/***
-  This file is part of polypaudio.
- 
-  polypaudio 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.
- 
-  polypaudio 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 polypaudio; 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 <assert.h>
-#include <string.h>
-#include <stdio.h>
-#include <string.h>
-
-#include <polyp/def.h>
-#include <polyp/timeval.h>
-#include <polyp/xmalloc.h>
-
-#include <polypcore/pstream-util.h>
-#include <polypcore/log.h>
-#include <polypcore/hashmap.h>
-
-#include "internal.h"
-
-#define LATENCY_IPOL_INTERVAL_USEC (100000L)
-
-pa_stream *pa_stream_new(pa_context *c, const char *name, const pa_sample_spec *ss, const pa_channel_map *map) {
-    pa_stream *s;
-    int i;
-    
-    assert(c);
-
-    PA_CHECK_VALIDITY_RETURN_NULL(c, ss && pa_sample_spec_valid(ss), PA_ERR_INVALID);
-    PA_CHECK_VALIDITY_RETURN_NULL(c, !map || (pa_channel_map_valid(map) && map->channels == ss->channels), PA_ERR_INVALID);
-
-    s = pa_xnew(pa_stream, 1);
-    s->ref = 1;
-    s->context = c;
-    s->mainloop = c->mainloop;
-
-    s->read_callback = NULL;
-    s->read_userdata = NULL;
-    s->write_callback = NULL;
-    s->write_userdata = NULL;
-    s->state_callback = NULL;
-    s->state_userdata = NULL;
-    s->overflow_callback = NULL;
-    s->overflow_userdata = NULL;
-    s->underflow_callback = NULL;
-    s->underflow_userdata = NULL;
-    s->latency_update_callback = NULL;
-    s->latency_update_userdata = NULL;
-
-    s->direction = PA_STREAM_NODIRECTION;
-    s->name = pa_xstrdup(name);
-    s->sample_spec = *ss;
-    s->flags = 0;
-
-    if (map)
-        s->channel_map = *map;
-    else
-        pa_channel_map_init_auto(&s->channel_map, ss->channels, PA_CHANNEL_MAP_DEFAULT);
-    
-    s->channel = 0;
-    s->channel_valid = 0;
-    s->syncid = c->csyncid++;
-    s->device_index = PA_INVALID_INDEX;
-    s->requested_bytes = 0;
-    s->state = PA_STREAM_UNCONNECTED;
-    memset(&s->buffer_attr, 0, sizeof(s->buffer_attr));
-
-    s->peek_memchunk.index = 0;
-    s->peek_memchunk.length = 0;
-    s->peek_memchunk.memblock = NULL;
-
-    s->record_memblockq = NULL;
-
-    s->previous_time = 0;
-    s->timing_info_valid = 0;
-    s->read_index_not_before = 0;
-    s->write_index_not_before = 0;
-
-    for (i = 0; i < PA_MAX_WRITE_INDEX_CORRECTIONS; i++)
-        s->write_index_corrections[i].valid = 0;
-    s->current_write_index_correction = 0;
-    
-    s->corked = 0;
-
-    s->cached_time_valid = 0;
-    
-    s->auto_timing_update_event = NULL;
-    s->auto_timing_update_requested = 0;
-
-    /* Refcounting is strictly one-way: from the "bigger" to the "smaller" object. */
-    PA_LLIST_PREPEND(pa_stream, c->streams, s);
-    pa_stream_ref(s);
-
-    return s;
-}
-
-static void stream_free(pa_stream *s) {
-    assert(s && !s->context && !s->channel_valid);
-
-    if (s->auto_timing_update_event) {
-        assert(s->mainloop);
-        s->mainloop->time_free(s->auto_timing_update_event);
-    }
-
-    if (s->peek_memchunk.memblock)
-        pa_memblock_unref(s->peek_memchunk.memblock);
-
-    if (s->record_memblockq)
-        pa_memblockq_free(s->record_memblockq);
-
-    pa_xfree(s->name);
-    pa_xfree(s);
-}
-
-void pa_stream_unref(pa_stream *s) {
-    assert(s);
-    assert(s->ref >= 1);
-
-    if (--(s->ref) == 0)
-        stream_free(s);
-}
-
-pa_stream* pa_stream_ref(pa_stream *s) {
-    assert(s);
-    assert(s->ref >= 1);
-    
-    s->ref++;
-    return s;
-}
-
-pa_stream_state_t pa_stream_get_state(pa_stream *s) {
-    assert(s);
-    assert(s->ref >= 1);
-    
-    return s->state;
-}
-
-pa_context* pa_stream_get_context(pa_stream *s) {
-    assert(s);
-    assert(s->ref >= 1);
-    
-    return s->context;
-}
-
-uint32_t pa_stream_get_index(pa_stream *s) {
-    assert(s);
-    assert(s->ref >= 1);
-
-    PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE, PA_INVALID_INDEX);
-    
-    return s->device_index;
-}
-    
-void pa_stream_set_state(pa_stream *s, pa_stream_state_t st) {
-    assert(s);
-    assert(s->ref >= 1);
-
-    if (s->state == st)
-        return;
-    
-    pa_stream_ref(s);
-
-    s->state = st;
-    if (s->state_callback)
-        s->state_callback(s, s->state_userdata);
-
-    if ((st == PA_STREAM_FAILED || st == PA_STREAM_TERMINATED) && s->context) {
-
-        /* Detach from context */
-        pa_operation *o, *n;
-
-        /* Unref all operatio object that point to us */
-        for (o = s->context->operations; o; o = n) {
-            n = o->next;
-            
-            if (o->stream == s)
-                pa_operation_cancel(o);
-        }
-        
-        /* Drop all outstanding replies for this stream */
-        if (s->context->pdispatch)
-            pa_pdispatch_unregister_reply(s->context->pdispatch, s);
-
-        if (s->channel_valid)
-            pa_dynarray_put((s->direction == PA_STREAM_PLAYBACK) ? s->context->playback_streams : s->context->record_streams, s->channel, NULL);
-        
-        PA_LLIST_REMOVE(pa_stream, s->context->streams, s);
-        pa_stream_unref(s);
-
-        s->channel = 0;
-        s->channel_valid = 0;
- 
-        s->context = NULL;
-    }
-
-    pa_stream_unref(s);
-}
-
-void pa_command_stream_killed(pa_pdispatch *pd, uint32_t command, PA_GCC_UNUSED uint32_t tag, pa_tagstruct *t, void *userdata) {
-    pa_context *c = userdata;
-    pa_stream *s;
-    uint32_t channel;
-    
-    assert(pd);
-    assert(command == PA_COMMAND_PLAYBACK_STREAM_KILLED || command == PA_COMMAND_RECORD_STREAM_KILLED);
-    assert(t);
-    assert(c);
-
-    pa_context_ref(c);
-    
-    if (pa_tagstruct_getu32(t, &channel) < 0 ||
-        !pa_tagstruct_eof(t)) {
-        pa_context_fail(c, PA_ERR_PROTOCOL);
-        goto finish;
-    }
-    
-    if (!(s = pa_dynarray_get(command == PA_COMMAND_PLAYBACK_STREAM_KILLED ? c->playback_streams : c->record_streams, channel)))
-        goto finish;
-
-    pa_context_set_error(c, PA_ERR_KILLED);
-    pa_stream_set_state(s, PA_STREAM_FAILED);
-
-finish:
-    pa_context_unref(c);
-}
-
-void pa_command_request(pa_pdispatch *pd, uint32_t command, PA_GCC_UNUSED uint32_t tag, pa_tagstruct *t, void *userdata) {
-    pa_stream *s;
-    pa_context *c = userdata;
-    uint32_t bytes, channel;
-    
-    assert(pd);
-    assert(command == PA_COMMAND_REQUEST);
-    assert(t);
-    assert(c);
-
-    pa_context_ref(c);
-    
-    if (pa_tagstruct_getu32(t, &channel) < 0 ||
-        pa_tagstruct_getu32(t, &bytes) < 0 ||
-        !pa_tagstruct_eof(t)) {
-        pa_context_fail(c, PA_ERR_PROTOCOL);
-        goto finish;
-    }
-    
-    if (!(s = pa_dynarray_get(c->playback_streams, channel)))
-        goto finish;
-
-    if (s->state == PA_STREAM_READY) {
-        s->requested_bytes += bytes;
-        
-        if (s->requested_bytes > 0 && s->write_callback)
-            s->write_callback(s, s->requested_bytes, s->write_userdata);
-    }
-
-finish:
-    pa_context_unref(c);
-}
-
-void pa_command_overflow_or_underflow(pa_pdispatch *pd, uint32_t command, PA_GCC_UNUSED uint32_t tag, pa_tagstruct *t, void *userdata) {
-    pa_stream *s;
-    pa_context *c = userdata;
-    uint32_t channel;
-
-    assert(pd);
-    assert(command == PA_COMMAND_OVERFLOW || command == PA_COMMAND_UNDERFLOW);
-    assert(t);
-    assert(c);
-
-    pa_context_ref(c);
-    
-    if (pa_tagstruct_getu32(t, &channel) < 0 ||
-        !pa_tagstruct_eof(t)) {
-        pa_context_fail(c, PA_ERR_PROTOCOL);
-        goto finish;
-    }
-    
-    if (!(s = pa_dynarray_get(c->playback_streams, channel)))
-        goto finish;
-
-    if (s->state == PA_STREAM_READY) {
-
-        if (command == PA_COMMAND_OVERFLOW) {
-            if (s->overflow_callback)
-                s->overflow_callback(s, s->overflow_userdata);
-        } else if (command == PA_COMMAND_UNDERFLOW) {
-            if (s->underflow_callback)
-                s->underflow_callback(s, s->underflow_userdata);
-        }
-    }
-
- finish:
-    pa_context_unref(c);
-}
-
-static void request_auto_timing_update(pa_stream *s, int force) {
-    struct timeval next;
-    assert(s);
-
-    if (!(s->flags & PA_STREAM_AUTO_TIMING_UPDATE))
-        return;
-    
-    if (s->state == PA_STREAM_READY &&
-        (force || !s->auto_timing_update_requested)) {
-        pa_operation *o;
-        
-/*         pa_log("automatically requesting new timing data");   */
-
-        if ((o = pa_stream_update_timing_info(s, NULL, NULL))) {
-            pa_operation_unref(o);
-            s->auto_timing_update_requested = 1;
-        }
-    }
-
-    pa_gettimeofday(&next);
-    pa_timeval_add(&next, LATENCY_IPOL_INTERVAL_USEC);
-    s->mainloop->time_restart(s->auto_timing_update_event, &next);
-}
-
-static void invalidate_indexes(pa_stream *s, int r, int w) {
-    assert(s);
-
-/*     pa_log("invalidate r:%u w:%u tag:%u", r, w, s->context->ctag); */
-    
-    if (s->state != PA_STREAM_READY)
-        return;
-
-    if (w) {
-        s->write_index_not_before = s->context->ctag;
-        
-        if (s->timing_info_valid)
-            s->timing_info.write_index_corrupt = 1;
-        
-/*         pa_log("write_index invalidated"); */
-    }
-    
-    if (r) {
-        s->read_index_not_before = s->context->ctag;
-        
-        if (s->timing_info_valid)
-            s->timing_info.read_index_corrupt = 1;
-        
-/*         pa_log("read_index invalidated"); */
-    }
-    
-    if ((s->direction == PA_STREAM_PLAYBACK && r) ||
-        (s->direction == PA_STREAM_RECORD && w))
-        s->cached_time_valid = 0;
-    
-    request_auto_timing_update(s, 1);
-}
-
-static void auto_timing_update_callback(PA_GCC_UNUSED pa_mainloop_api *m, PA_GCC_UNUSED pa_time_event *e, PA_GCC_UNUSED const struct timeval *tv, void *userdata) {
-    pa_stream *s = userdata;
-
-/*     pa_log("time event");    */
-
-    pa_stream_ref(s);
-    request_auto_timing_update(s, 0);
-    pa_stream_unref(s);
-}
-
-void pa_create_stream_callback(pa_pdispatch *pd, uint32_t command, PA_GCC_UNUSED uint32_t tag, pa_tagstruct *t, void *userdata) {
-    pa_stream *s = userdata;
-    
-    assert(pd);
-    assert(s);
-    assert(s->state == PA_STREAM_CREATING);
-        
-    pa_stream_ref(s);
-    
-    if (command != PA_COMMAND_REPLY) {
-        if (pa_context_handle_error(s->context, command, t) < 0)
-            goto finish;
-        
-        pa_stream_set_state(s, PA_STREAM_FAILED);
-        goto finish;
-    }
-
-    if (pa_tagstruct_getu32(t, &s->channel) < 0 ||
-        ((s->direction != PA_STREAM_UPLOAD) && pa_tagstruct_getu32(t, &s->device_index) < 0) ||
-        ((s->direction != PA_STREAM_RECORD) && pa_tagstruct_getu32(t, &s->requested_bytes) < 0)) {
-        pa_context_fail(s->context, PA_ERR_PROTOCOL);
-        goto finish;
-    }
-
-    if (pa_context_get_server_protocol_version(s->context) >= 9) {
-        if (s->direction == PA_STREAM_PLAYBACK) {
-            if (pa_tagstruct_getu32(t, &s->buffer_attr.maxlength) < 0 ||
-                pa_tagstruct_getu32(t, &s->buffer_attr.tlength) < 0 ||
-                pa_tagstruct_getu32(t, &s->buffer_attr.prebuf) < 0 ||
-                pa_tagstruct_getu32(t, &s->buffer_attr.minreq) < 0) {
-                pa_context_fail(s->context, PA_ERR_PROTOCOL);
-                goto finish;
-            }
-        } else if (s->direction == PA_STREAM_RECORD) {
-            if (pa_tagstruct_getu32(t, &s->buffer_attr.maxlength) < 0 ||
-                pa_tagstruct_getu32(t, &s->buffer_attr.fragsize) < 0) {
-                pa_context_fail(s->context, PA_ERR_PROTOCOL);
-                goto finish;
-            }
-        }
-    }
-
-    if (!pa_tagstruct_eof(t)) {
-        pa_context_fail(s->context, PA_ERR_PROTOCOL);
-        goto finish;
-    }
-
-    if (s->direction == PA_STREAM_RECORD) {
-        assert(!s->record_memblockq);
-        
-        s->record_memblockq = pa_memblockq_new(
-                0, 
-                s->buffer_attr.maxlength,
-                0,
-                pa_frame_size(&s->sample_spec),
-                1,
-                0,
-                NULL,
-                s->context->memblock_stat);
-    }
-
-    s->channel_valid = 1;
-    pa_dynarray_put((s->direction == PA_STREAM_RECORD) ? s->context->record_streams : s->context->playback_streams, s->channel, s);
-
-    pa_stream_set_state(s, PA_STREAM_READY);
-    
-    if (s->direction != PA_STREAM_UPLOAD &&
-        s->flags & PA_STREAM_AUTO_TIMING_UPDATE) {
-        struct timeval tv;
-
-        pa_gettimeofday(&tv);
-        tv.tv_usec += LATENCY_IPOL_INTERVAL_USEC; /* every 100 ms */
-
-        assert(!s->auto_timing_update_event);
-        s->auto_timing_update_event = s->mainloop->time_new(s->mainloop, &tv, &auto_timing_update_callback, s);
-
-        request_auto_timing_update(s, 1);
-    }
-
-    if (s->requested_bytes > 0 && s->ref > 1 && s->write_callback)
-        s->write_callback(s, s->requested_bytes, s->write_userdata);
-
-finish:
-    pa_stream_unref(s);
-}
-
-static int create_stream(
-        pa_stream_direction_t direction,
-        pa_stream *s,
-        const char *dev,
-        const pa_buffer_attr *attr,
-        pa_stream_flags_t flags,
-        const pa_cvolume *volume,
-        pa_stream *sync_stream) {
-    
-    pa_tagstruct *t;
-    uint32_t tag;
-    
-    assert(s);
-    assert(s->ref >= 1);
-    
-    PA_CHECK_VALIDITY(s->context, s->state == PA_STREAM_UNCONNECTED, PA_ERR_BADSTATE);
-    PA_CHECK_VALIDITY(s->context, !(flags & ~((direction != PA_STREAM_UPLOAD ?
-                                               PA_STREAM_START_CORKED|
-                                               PA_STREAM_INTERPOLATE_TIMING|
-                                               PA_STREAM_NOT_MONOTONOUS|
-                                               PA_STREAM_AUTO_TIMING_UPDATE : 0))), PA_ERR_INVALID);
-    PA_CHECK_VALIDITY(s->context, !volume || volume->channels == s->sample_spec.channels, PA_ERR_INVALID);
-    PA_CHECK_VALIDITY(s->context, !sync_stream || (direction == PA_STREAM_PLAYBACK && sync_stream->direction == PA_STREAM_PLAYBACK), PA_ERR_INVALID);
-
-    pa_stream_ref(s);
-
-    s->direction = direction;
-    s->flags = flags;
-    
-    if (sync_stream)
-        s->syncid = sync_stream->syncid;
-    
-    if (attr)
-        s->buffer_attr = *attr;
-    else {
-        /* half a second */
-        s->buffer_attr.tlength = pa_bytes_per_second(&s->sample_spec)/2;
-        s->buffer_attr.maxlength = (s->buffer_attr.tlength*3)/2;
-        s->buffer_attr.minreq = s->buffer_attr.tlength/100;
-        s->buffer_attr.prebuf = s->buffer_attr.tlength - s->buffer_attr.minreq;
-        s->buffer_attr.fragsize = s->buffer_attr.tlength/100;
-    }
-
-    if (!dev)
-        dev = s->direction == PA_STREAM_PLAYBACK ? s->context->conf->default_sink : s->context->conf->default_source;
-
-    t = pa_tagstruct_command(
-            s->context,
-            s->direction == PA_STREAM_PLAYBACK ? PA_COMMAND_CREATE_PLAYBACK_STREAM : PA_COMMAND_CREATE_RECORD_STREAM,
-            &tag);
-    
-    pa_tagstruct_put(
-            t,
-            PA_TAG_STRING, s->name,
-            PA_TAG_SAMPLE_SPEC, &s->sample_spec,
-            PA_TAG_CHANNEL_MAP, &s->channel_map,
-            PA_TAG_U32, PA_INVALID_INDEX,
-            PA_TAG_STRING, dev,
-            PA_TAG_U32, s->buffer_attr.maxlength,
-            PA_TAG_BOOLEAN, !!(flags & PA_STREAM_START_CORKED),
-            PA_TAG_INVALID);
-    
-    if (s->direction == PA_STREAM_PLAYBACK) {
-        pa_cvolume cv;
-
-        pa_tagstruct_put(
-                t,
-                PA_TAG_U32, s->buffer_attr.tlength,
-                PA_TAG_U32, s->buffer_attr.prebuf,
-                PA_TAG_U32, s->buffer_attr.minreq,
-                PA_TAG_U32, s->syncid,
-                PA_TAG_INVALID);
-
-        if (!volume)
-            volume = pa_cvolume_reset(&cv, s->sample_spec.channels);
-        
-        pa_tagstruct_put_cvolume(t, volume);
-    } else
-        pa_tagstruct_putu32(t, s->buffer_attr.fragsize);
-
-    pa_pstream_send_tagstruct(s->context->pstream, t);
-    pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, pa_create_stream_callback, s, NULL);
-
-    pa_stream_set_state(s, PA_STREAM_CREATING);
-    
-    pa_stream_unref(s);
-    return 0;
-}
-
-int pa_stream_connect_playback(
-        pa_stream *s,
-        const char *dev,
-        const pa_buffer_attr *attr,
-        pa_stream_flags_t flags,
-        pa_cvolume *volume,
-        pa_stream *sync_stream) {
-    
-    assert(s);
-    assert(s->ref >= 1);
-    
-    return create_stream(PA_STREAM_PLAYBACK, s, dev, attr, flags, volume, sync_stream);
-}
-
-int pa_stream_connect_record(
-        pa_stream *s,
-        const char *dev,
-        const pa_buffer_attr *attr,
-        pa_stream_flags_t flags) {
-    
-    assert(s);
-    assert(s->ref >= 1);
-
-    return create_stream(PA_STREAM_RECORD, s, dev, attr, flags, NULL, NULL);
-}
-
-int pa_stream_write(
-        pa_stream *s,
-        const void *data,
-        size_t length,
-        void (*free_cb)(void *p),
-        int64_t offset,
-        pa_seek_mode_t seek) {
-    
-    pa_memchunk chunk;
-    
-    assert(s);
-    assert(s->ref >= 1);
-    assert(data);
-
-    PA_CHECK_VALIDITY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
-    PA_CHECK_VALIDITY(s->context, s->direction == PA_STREAM_PLAYBACK || s->direction == PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
-    PA_CHECK_VALIDITY(s->context, seek <= PA_SEEK_RELATIVE_END, PA_ERR_INVALID);
-    PA_CHECK_VALIDITY(s->context, s->direction == PA_STREAM_PLAYBACK || (seek == PA_SEEK_RELATIVE && offset == 0), PA_ERR_INVALID);
-
-    if (length <= 0)
-        return 0;
-
-    if (free_cb) 
-        chunk.memblock = pa_memblock_new_user((void*) data, length, free_cb, 1, s->context->memblock_stat);
-    else {
-        chunk.memblock = pa_memblock_new(length, s->context->memblock_stat);
-        memcpy(chunk.memblock->data, data, length);
-    }
-        
-    chunk.index = 0;
-    chunk.length = length;
-
-    pa_pstream_send_memblock(s->context->pstream, s->channel, offset, seek, &chunk);
-    pa_memblock_unref(chunk.memblock);
-    
-    if (length < s->requested_bytes)
-        s->requested_bytes -= length;
-    else
-        s->requested_bytes = 0;
-
-    if (s->direction == PA_STREAM_PLAYBACK) {
-        
-        /* Update latency request correction */
-        if (s->write_index_corrections[s->current_write_index_correction].valid) {
-            
-            if (seek == PA_SEEK_ABSOLUTE) {
-                s->write_index_corrections[s->current_write_index_correction].corrupt = 0;
-                s->write_index_corrections[s->current_write_index_correction].absolute = 1;
-                s->write_index_corrections[s->current_write_index_correction].value = offset + length;
-            } else if (seek == PA_SEEK_RELATIVE) {
-                if (!s->write_index_corrections[s->current_write_index_correction].corrupt)
-                    s->write_index_corrections[s->current_write_index_correction].value += offset + length;
-            } else
-                s->write_index_corrections[s->current_write_index_correction].corrupt = 1;
-        }
-        
-        /* Update the write index in the already available latency data */
-        if (s->timing_info_valid) {
-            
-            if (seek == PA_SEEK_ABSOLUTE) {
-                s->timing_info.write_index_corrupt = 0;
-                s->timing_info.write_index = offset + length;
-            } else if (seek == PA_SEEK_RELATIVE) {
-                if (!s->timing_info.write_index_corrupt)
-                    s->timing_info.write_index += offset + length;
-            } else
-                s->timing_info.write_index_corrupt = 1;
-        }
-
-        if (!s->timing_info_valid || s->timing_info.write_index_corrupt)
-            request_auto_timing_update(s, 1);
-    }
-    
-    return 0;
-}
-
-int pa_stream_peek(pa_stream *s, const void **data, size_t *length) {
-    assert(s);
-    assert(s->ref >= 1);
-    assert(data);
-    assert(length);
-
-    PA_CHECK_VALIDITY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
-    PA_CHECK_VALIDITY(s->context, s->direction == PA_STREAM_RECORD, PA_ERR_BADSTATE);
-    
-    if (!s->peek_memchunk.memblock) {
-
-        if (pa_memblockq_peek(s->record_memblockq, &s->peek_memchunk) < 0) {
-            *data = NULL;
-            *length = 0;
-            return 0;
-        }
-    }
-
-    *data = (const char*) s->peek_memchunk.memblock->data + s->peek_memchunk.index;
-    *length = s->peek_memchunk.length;
-    return 0;
-}
-
-int pa_stream_drop(pa_stream *s) {
-    assert(s);
-    assert(s->ref >= 1);
-
-    PA_CHECK_VALIDITY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
-    PA_CHECK_VALIDITY(s->context, s->direction == PA_STREAM_RECORD, PA_ERR_BADSTATE);
-    PA_CHECK_VALIDITY(s->context, s->peek_memchunk.memblock, PA_ERR_BADSTATE);
-    
-    pa_memblockq_drop(s->record_memblockq, &s->peek_memchunk, s->peek_memchunk.length);
-
-    /* Fix the simulated local read index */
-    if (s->timing_info_valid && !s->timing_info.read_index_corrupt)
-        s->timing_info.read_index += s->peek_memchunk.length;
-    
-    pa_memblock_unref(s->peek_memchunk.memblock);
-    s->peek_memchunk.length = 0;
-    s->peek_memchunk.index = 0;
-    s->peek_memchunk.memblock = NULL;
-
-    return 0;
-}
-
-size_t pa_stream_writable_size(pa_stream *s) {
-    assert(s);
-    assert(s->ref >= 1);
-
-    PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE, (size_t) -1);
-    PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->direction != PA_STREAM_RECORD, PA_ERR_BADSTATE, (size_t) -1);
-    
-    return s->requested_bytes;
-}
-
-size_t pa_stream_readable_size(pa_stream *s) {
-    assert(s);
-    assert(s->ref >= 1);
-
-    PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE, (size_t) -1);
-    PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->direction == PA_STREAM_RECORD, PA_ERR_BADSTATE, (size_t) -1);
-
-    return pa_memblockq_get_length(s->record_memblockq);
-}
-
-pa_operation * pa_stream_drain(pa_stream *s, pa_stream_success_cb_t cb, void *userdata) {
-    pa_operation *o;
-    pa_tagstruct *t;
-    uint32_t tag;
-    
-    assert(s);
-    assert(s->ref >= 1);
-
-    PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
-    PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->direction == PA_STREAM_PLAYBACK, PA_ERR_BADSTATE);
-
-    o = pa_operation_new(s->context, s, (pa_operation_cb_t) cb, userdata);
-
-    t = pa_tagstruct_command(s->context, PA_COMMAND_DRAIN_PLAYBACK_STREAM, &tag);
-    pa_tagstruct_putu32(t, s->channel);
-    pa_pstream_send_tagstruct(s->context->pstream, t);
-    pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, pa_stream_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
-
-    return o;
-}
-
-static void stream_get_timing_info_callback(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
-    pa_operation *o = userdata;
-    struct timeval local, remote, now;
-    pa_timing_info *i;
-    
-    assert(pd);
-    assert(o);
-
-    if (!o->context || !o->stream)
-        goto finish;
-
-    i = &o->stream->timing_info;
-
-/*     pa_log("pre corrupt w:%u r:%u\n", !o->stream->timing_info_valid || i->write_index_corrupt,!o->stream->timing_info_valid || i->read_index_corrupt); */
-    
-    o->stream->timing_info_valid = 0;
-    i->write_index_corrupt = 0;
-    i->read_index_corrupt = 0;
-
-/*     pa_log("timing update %u\n", tag); */
-
-    if (command != PA_COMMAND_REPLY) {
-        if (pa_context_handle_error(o->context, command, t) < 0)
-            goto finish;
-
-    } else if (pa_tagstruct_get_usec(t, &i->sink_usec) < 0 ||
-               pa_tagstruct_get_usec(t, &i->source_usec) < 0 ||
-               pa_tagstruct_get_boolean(t, &i->playing) < 0 ||
-               pa_tagstruct_get_timeval(t, &local) < 0 ||
-               pa_tagstruct_get_timeval(t, &remote) < 0 ||
-               pa_tagstruct_gets64(t, &i->write_index) < 0 ||
-               pa_tagstruct_gets64(t, &i->read_index) < 0 ||
-               !pa_tagstruct_eof(t)) {
-        pa_context_fail(o->context, PA_ERR_PROTOCOL);
-        goto finish;
-        
-    } else {
-        o->stream->timing_info_valid = 1;
-
-        pa_gettimeofday(&now);
-        
-        /* Calculcate timestamps */
-        if (pa_timeval_cmp(&local, &remote) <= 0 && pa_timeval_cmp(&remote, &now) <= 0) {
-            /* local and remote seem to have synchronized clocks */
-            
-            if (o->stream->direction == PA_STREAM_PLAYBACK)
-                i->transport_usec = pa_timeval_diff(&remote, &local);
-            else
-                i->transport_usec = pa_timeval_diff(&now, &remote);
-            
-            i->synchronized_clocks = 1;
-            i->timestamp = remote;
-        } else {
-            /* clocks are not synchronized, let's estimate latency then */
-            i->transport_usec = pa_timeval_diff(&now, &local)/2;
-            i->synchronized_clocks = 0;
-            i->timestamp = local;
-            pa_timeval_add(&i->timestamp, i->transport_usec);
-        }
-
-        /* Invalidate read and write indexes if necessary */
-        if (tag < o->stream->read_index_not_before)
-            i->read_index_corrupt = 1;
-
-        if (tag < o->stream->write_index_not_before)
-            i->write_index_corrupt = 1;
-
-        if (o->stream->direction == PA_STREAM_PLAYBACK) {
-            /* Write index correction */
-
-            int n, j;
-            uint32_t ctag = tag;
-
-            /* Go through the saved correction values and add up the total correction.*/
-            
-            for (n = 0, j = o->stream->current_write_index_correction+1;
-                 n < PA_MAX_WRITE_INDEX_CORRECTIONS;
-                 n++, j = (j + 1) % PA_MAX_WRITE_INDEX_CORRECTIONS) {
-
-                /* Step over invalid data or out-of-date data */
-                if (!o->stream->write_index_corrections[j].valid ||
-                    o->stream->write_index_corrections[j].tag < ctag)
-                    continue;
-
-                /* Make sure that everything is in order */
-                ctag = o->stream->write_index_corrections[j].tag+1;
-
-                /* Now fix the write index */
-                if (o->stream->write_index_corrections[j].corrupt) {
-                    /* A corrupting seek was made */
-                    i->write_index = 0;
-                    i->write_index_corrupt = 1;
-                } else if (o->stream->write_index_corrections[j].absolute) {
-                    /* An absolute seek was made */
-                    i->write_index = o->stream->write_index_corrections[j].value;
-                    i->write_index_corrupt = 0;
-                } else if (!i->write_index_corrupt) {
-                    /* A relative seek was made */
-                    i->write_index += o->stream->write_index_corrections[j].value;
-                }
-            }
-        }
-
-        if (o->stream->direction == PA_STREAM_RECORD) {
-            /* Read index correction */
-
-            if (!i->read_index_corrupt)
-                i->read_index -= pa_memblockq_get_length(o->stream->record_memblockq);
-        }
-        
-        o->stream->cached_time_valid = 0;
-    }
-
-    o->stream->auto_timing_update_requested = 0;
-/*     pa_log("post corrupt w:%u r:%u\n", i->write_index_corrupt || !o->stream->timing_info_valid, i->read_index_corrupt || !o->stream->timing_info_valid); */
-    
-    /* Clear old correction entries */
-    if (o->stream->direction == PA_STREAM_PLAYBACK) {
-        int n;
-        
-        for (n = 0; n < PA_MAX_WRITE_INDEX_CORRECTIONS; n++) {
-            if (!o->stream->write_index_corrections[n].valid)
-                continue;
-            
-            if (o->stream->write_index_corrections[n].tag <= tag)
-                o->stream->write_index_corrections[n].valid = 0;
-        }
-    }
-
-    if (o->stream->latency_update_callback)
-        o->stream->latency_update_callback(o->stream, o->stream->latency_update_userdata);
-    
-    if (o->callback && o->stream && o->stream->state == PA_STREAM_READY) {
-        pa_stream_success_cb_t cb = (pa_stream_success_cb_t) o->callback;
-        cb(o->stream, o->stream->timing_info_valid, o->userdata);
-    }
-    
-finish:
-
-    pa_operation_done(o);
-    pa_operation_unref(o);
-}
-
-pa_operation* pa_stream_update_timing_info(pa_stream *s, pa_stream_success_cb_t cb, void *userdata) {
-    uint32_t tag;
-    pa_operation *o;
-    pa_tagstruct *t;
-    struct timeval now;
-    int cidx = 0;
-    
-    assert(s);
-    assert(s->ref >= 1);
-
-    PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
-    PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
-    
-    if (s->direction == PA_STREAM_PLAYBACK) {
-        /* Find a place to store the write_index correction data for this entry */
-        cidx = (s->current_write_index_correction + 1) % PA_MAX_WRITE_INDEX_CORRECTIONS;
-        
-        /* Check if we could allocate a correction slot. If not, there are too many outstanding queries */
-        PA_CHECK_VALIDITY_RETURN_NULL(s->context, !s->write_index_corrections[cidx].valid, PA_ERR_INTERNAL);
-    }
-    o = pa_operation_new(s->context, s, (pa_operation_cb_t) cb, userdata);
-    
-    t = pa_tagstruct_command(
-            s->context,
-            s->direction == PA_STREAM_PLAYBACK ? PA_COMMAND_GET_PLAYBACK_LATENCY : PA_COMMAND_GET_RECORD_LATENCY,
-            &tag);
-    pa_tagstruct_putu32(t, s->channel);
-    pa_tagstruct_put_timeval(t, pa_gettimeofday(&now));
-    
-    pa_pstream_send_tagstruct(s->context->pstream, t);
-    pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, stream_get_timing_info_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
-
-    if (s->direction == PA_STREAM_PLAYBACK) {
-        /* Fill in initial correction data */
-        o->stream->current_write_index_correction = cidx;
-        o->stream->write_index_corrections[cidx].valid = 1;
-        o->stream->write_index_corrections[cidx].tag = tag;
-        o->stream->write_index_corrections[cidx].absolute = 0;
-        o->stream->write_index_corrections[cidx].value = 0;
-        o->stream->write_index_corrections[cidx].corrupt = 0;
-    }
-    
-/*     pa_log("requesting update %u\n", tag); */
-    
-    return o;
-}
-
-void pa_stream_disconnect_callback(pa_pdispatch *pd, uint32_t command, PA_GCC_UNUSED uint32_t tag, pa_tagstruct *t, void *userdata) {
-    pa_stream *s = userdata;
-    
-    assert(pd);
-    assert(s);
-    assert(s->ref >= 1);
-
-    pa_stream_ref(s);
-
-    if (command != PA_COMMAND_REPLY) {
-        if (pa_context_handle_error(s->context, command, t) < 0)
-            goto finish;
-
-        pa_stream_set_state(s, PA_STREAM_FAILED);
-        goto finish;
-    } else if (!pa_tagstruct_eof(t)) {
-        pa_context_fail(s->context, PA_ERR_PROTOCOL);
-        goto finish;
-    }
-
-    pa_stream_set_state(s, PA_STREAM_TERMINATED);
-
-finish:
-    pa_stream_unref(s);
-}
-
-int pa_stream_disconnect(pa_stream *s) {
-    pa_tagstruct *t;
-    uint32_t tag;
-    
-    assert(s);
-    assert(s->ref >= 1);
-
-    PA_CHECK_VALIDITY(s->context, s->channel_valid, PA_ERR_BADSTATE);
-    PA_CHECK_VALIDITY(s->context, s->context->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
-
-    pa_stream_ref(s);
-
-    t = pa_tagstruct_command(
-            s->context,
-            s->direction == PA_STREAM_PLAYBACK ? PA_COMMAND_DELETE_PLAYBACK_STREAM :
-            (s->direction == PA_STREAM_RECORD ? PA_COMMAND_DELETE_RECORD_STREAM : PA_COMMAND_DELETE_UPLOAD_STREAM),
-            &tag);
-    pa_tagstruct_putu32(t, s->channel);
-    pa_pstream_send_tagstruct(s->context->pstream, t);
-    pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, pa_stream_disconnect_callback, s, NULL);
-
-    pa_stream_unref(s);
-    return 0;
-}
-
-void pa_stream_set_read_callback(pa_stream *s, pa_stream_request_cb_t cb, void *userdata) {
-    assert(s);
-    assert(s->ref >= 1);
-
-    s->read_callback = cb;
-    s->read_userdata = userdata;
-}
-
-void pa_stream_set_write_callback(pa_stream *s, pa_stream_request_cb_t cb, void *userdata) {
-    assert(s);
-    assert(s->ref >= 1);
-
-    s->write_callback = cb;
-    s->write_userdata = userdata;
-}
-
-void pa_stream_set_state_callback(pa_stream *s, pa_stream_notify_cb_t cb, void *userdata) {
-    assert(s);
-    assert(s->ref >= 1);
-
-    s->state_callback = cb;
-    s->state_userdata = userdata;
-}
-
-void pa_stream_set_overflow_callback(pa_stream *s, pa_stream_notify_cb_t cb, void *userdata) {
-    assert(s);
-    assert(s->ref >= 1);
-    
-    s->overflow_callback = cb;
-    s->overflow_userdata = userdata;
-}
-
-void pa_stream_set_underflow_callback(pa_stream *s, pa_stream_notify_cb_t cb, void *userdata) {
-    assert(s);
-    assert(s->ref >= 1);
-    
-    s->underflow_callback = cb;
-    s->underflow_userdata = userdata;
-}
-
-void pa_stream_set_latency_update_callback(pa_stream *s, pa_stream_notify_cb_t cb, void *userdata) {
-    assert(s);
-    assert(s->ref >= 1);
-    
-    s->latency_update_callback = cb;
-    s->latency_update_userdata = userdata;
-}
-
-void pa_stream_simple_ack_callback(pa_pdispatch *pd, uint32_t command, PA_GCC_UNUSED uint32_t tag, pa_tagstruct *t, void *userdata) {
-    pa_operation *o = userdata;
-    int success = 1;
-    
-    assert(pd);
-    assert(o);
-    assert(o->ref >= 1);
-
-    if (!o->context)
-        goto finish;
-    
-    if (command != PA_COMMAND_REPLY) {
-        if (pa_context_handle_error(o->context, command, t) < 0)
-            goto finish;
-
-        success = 0;
-    } else if (!pa_tagstruct_eof(t)) {
-        pa_context_fail(o->context, PA_ERR_PROTOCOL);
-        goto finish;
-    }
-
-    if (o->callback) {
-        pa_stream_success_cb_t cb = (pa_stream_success_cb_t) o->callback;
-        cb(o->stream, success, o->userdata);
-    }
-
-finish:
-    pa_operation_done(o);
-    pa_operation_unref(o);
-}
-
-pa_operation* pa_stream_cork(pa_stream *s, int b, pa_stream_success_cb_t cb, void *userdata) {
-    pa_operation *o;
-    pa_tagstruct *t;
-    uint32_t tag;
-    
-    assert(s);
-    assert(s->ref >= 1);
-    
-    PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
-    PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
-
-    s->corked = b;
-    
-    o = pa_operation_new(s->context, s, (pa_operation_cb_t) cb, userdata);
-
-    t = pa_tagstruct_command(
-            s->context,
-            s->direction == PA_STREAM_PLAYBACK ? PA_COMMAND_CORK_PLAYBACK_STREAM : PA_COMMAND_CORK_RECORD_STREAM,
-            &tag);
-    pa_tagstruct_putu32(t, s->channel);
-    pa_tagstruct_put_boolean(t, !!b);
-    pa_pstream_send_tagstruct(s->context->pstream, t);
-    pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, pa_stream_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
-
-    if (s->direction == PA_STREAM_PLAYBACK)
-        invalidate_indexes(s, 1, 0);
-
-    return o;
-}
-
-static pa_operation* stream_send_simple_command(pa_stream *s, uint32_t command, pa_stream_success_cb_t cb, void *userdata) {
-    pa_tagstruct *t;
-    pa_operation *o;
-    uint32_t tag;
-    
-    assert(s);
-    assert(s->ref >= 1);
-
-    PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
-    
-    o = pa_operation_new(s->context, s, (pa_operation_cb_t) cb, userdata);
-
-    t = pa_tagstruct_command(s->context, command, &tag);
-    pa_tagstruct_putu32(t, s->channel);
-    pa_pstream_send_tagstruct(s->context->pstream, t);
-    pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, pa_stream_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
-
-    return o;
-}
-
-pa_operation* pa_stream_flush(pa_stream *s, pa_stream_success_cb_t cb, void *userdata) {
-    pa_operation *o;
-    
-    PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
-    
-    if ((o = stream_send_simple_command(s, s->direction == PA_STREAM_PLAYBACK ? PA_COMMAND_FLUSH_PLAYBACK_STREAM : PA_COMMAND_FLUSH_RECORD_STREAM, cb, userdata))) {
-
-        if (s->direction == PA_STREAM_PLAYBACK) {
-            if (s->write_index_corrections[s->current_write_index_correction].valid)
-                s->write_index_corrections[s->current_write_index_correction].corrupt = 1;
-        
-            if (s->timing_info_valid)
-                s->timing_info.write_index_corrupt = 1;
-
-            if (s->buffer_attr.prebuf > 0) 
-                invalidate_indexes(s, 1, 0);
-            else
-                request_auto_timing_update(s, 1);
-        } else
-            invalidate_indexes(s, 0, 1);
-    }
-    
-    return o;
-}
-
-pa_operation* pa_stream_prebuf(pa_stream *s, pa_stream_success_cb_t cb, void *userdata) {
-    pa_operation *o;
-
-    PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->direction == PA_STREAM_PLAYBACK, PA_ERR_BADSTATE);
-    PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->buffer_attr.prebuf > 0, PA_ERR_BADSTATE);
-
-    if ((o = stream_send_simple_command(s, PA_COMMAND_PREBUF_PLAYBACK_STREAM, cb, userdata)))
-        invalidate_indexes(s, 1, 0);
-
-    return o;
-}
-
-pa_operation* pa_stream_trigger(pa_stream *s, pa_stream_success_cb_t cb, void *userdata) {
-    pa_operation *o;
-    
-    PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->direction == PA_STREAM_PLAYBACK, PA_ERR_BADSTATE);
-    PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->buffer_attr.prebuf > 0, PA_ERR_BADSTATE);
-
-    if ((o = stream_send_simple_command(s, PA_COMMAND_TRIGGER_PLAYBACK_STREAM, cb, userdata)))
-        invalidate_indexes(s, 1, 0);
-    
-    return o;
-}
-
-pa_operation* pa_stream_set_name(pa_stream *s, const char *name, pa_stream_success_cb_t cb, void *userdata) {
-    pa_operation *o;
-    pa_tagstruct *t;
-    uint32_t tag;
-    
-    assert(s);
-    assert(s->ref >= 1);
-    assert(name);
-
-    PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
-    PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
-
-    o = pa_operation_new(s->context, s, (pa_operation_cb_t) cb, userdata);
-
-    t = pa_tagstruct_command(
-            s->context,
-            s->direction == PA_STREAM_RECORD ? PA_COMMAND_SET_RECORD_STREAM_NAME : PA_COMMAND_SET_PLAYBACK_STREAM_NAME,
-            &tag);
-    pa_tagstruct_putu32(t, s->channel);
-    pa_tagstruct_puts(t, name);
-    pa_pstream_send_tagstruct(s->context->pstream, t);
-    pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, pa_stream_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
-
-    return o;
-}
-
-int pa_stream_get_time(pa_stream *s, pa_usec_t *r_usec) {
-    pa_usec_t usec = 0;
-
-    assert(s);
-    assert(s->ref >= 1);
-
-    PA_CHECK_VALIDITY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
-    PA_CHECK_VALIDITY(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
-    PA_CHECK_VALIDITY(s->context, s->timing_info_valid, PA_ERR_NODATA);
-    PA_CHECK_VALIDITY(s->context, s->direction != PA_STREAM_PLAYBACK || !s->timing_info.read_index_corrupt, PA_ERR_NODATA);
-    PA_CHECK_VALIDITY(s->context, s->direction != PA_STREAM_RECORD || !s->timing_info.write_index_corrupt, PA_ERR_NODATA);
-
-    if (s->cached_time_valid)
-        /* We alredy calculated the time value for this timing info, so let's reuse it */
-        usec = s->cached_time;
-    else {
-        if (s->direction == PA_STREAM_PLAYBACK) {
-            /* The last byte that was written into the output device
-             * had this time value associated */
-            usec = pa_bytes_to_usec(s->timing_info.read_index < 0 ? 0 : (uint64_t) s->timing_info.read_index, &s->sample_spec);
-
-            if (!s->corked) {
-                /* Because the latency info took a little time to come
-                 * to us, we assume that the real output time is actually
-                 * a little ahead */
-                usec += s->timing_info.transport_usec;
-                
-                /* However, the output device usually maintains a buffer
-                   too, hence the real sample currently played is a little
-                   back  */
-                if (s->timing_info.sink_usec >= usec)
-                    usec = 0;
-                else
-                    usec -= s->timing_info.sink_usec;
-            }
-            
-        } else if (s->direction == PA_STREAM_RECORD) {
-            /* The last byte written into the server side queue had
-             * this time value associated */
-            usec = pa_bytes_to_usec(s->timing_info.write_index < 0 ? 0 : (uint64_t) s->timing_info.write_index, &s->sample_spec);
-
-            if (!s->corked) {
-                /* Add transport latency */
-                usec += s->timing_info.transport_usec;
-                
-                /* Add latency of data in device buffer */
-                usec += s->timing_info.source_usec;
-                
-                /* If this is a monitor source, we need to correct the
-                 * time by the playback device buffer */
-                if (s->timing_info.sink_usec >= usec)
-                    usec = 0;
-                else
-                    usec -= s->timing_info.sink_usec;
-            }
-        }
-
-        s->cached_time = usec;
-        s->cached_time_valid = 1;
-    }
-
-    /* Interpolate if requested */
-    if (s->flags & PA_STREAM_INTERPOLATE_TIMING) {
-
-        /* We just add the time that passed since the latency info was
-         * current */
-        if (!s->corked) {
-            struct timeval now;
-            usec += pa_timeval_diff(pa_gettimeofday(&now), &s->timing_info.timestamp);
-        }
-    }
-
-    /* Make sure the time runs monotonically */
-    if (!(s->flags & PA_STREAM_NOT_MONOTONOUS)) {
-        if (usec < s->previous_time)
-            usec = s->previous_time;
-        else
-            s->previous_time = usec;
-    }
-
-    if (r_usec)
-        *r_usec = usec;
-    
-    return 0;
-}
-
-static pa_usec_t time_counter_diff(pa_stream *s, pa_usec_t a, pa_usec_t b, int *negative) {
-    assert(s);
-    assert(s->ref >= 1);
-    
-    if (negative)
-        *negative = 0;
-
-    if (a >= b) 
-        return a-b;
-    else {
-        if (negative && s->direction == PA_STREAM_RECORD) {
-            *negative = 1;
-            return b-a;
-        } else
-            return 0;
-    }
-}
-
-int pa_stream_get_latency(pa_stream *s, pa_usec_t *r_usec, int *negative) {
-    pa_usec_t t, c;
-    int r;
-    int64_t cindex;
-
-    assert(s);
-    assert(s->ref >= 1);
-    assert(r_usec);
-
-    PA_CHECK_VALIDITY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
-    PA_CHECK_VALIDITY(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
-    PA_CHECK_VALIDITY(s->context, s->timing_info_valid, PA_ERR_NODATA);
-    PA_CHECK_VALIDITY(s->context, s->direction != PA_STREAM_PLAYBACK || !s->timing_info.write_index_corrupt, PA_ERR_NODATA);
-    PA_CHECK_VALIDITY(s->context, s->direction != PA_STREAM_RECORD || !s->timing_info.read_index_corrupt, PA_ERR_NODATA);
-    
-    if ((r = pa_stream_get_time(s, &t)) < 0)
-        return r;
-
-    if (s->direction == PA_STREAM_PLAYBACK)
-        cindex = s->timing_info.write_index;
-    else
-        cindex = s->timing_info.read_index;
-
-    if (cindex < 0)
-        cindex = 0;
-    
-    c = pa_bytes_to_usec(cindex, &s->sample_spec);
-
-    if (s->direction == PA_STREAM_PLAYBACK)
-        *r_usec = time_counter_diff(s, c, t, negative);
-    else
-        *r_usec = time_counter_diff(s, t, c, negative);
-
-    return 0;
-}
-
-const pa_timing_info* pa_stream_get_timing_info(pa_stream *s) {
-    assert(s);
-    assert(s->ref >= 1);
-
-    PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
-    PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
-    PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->timing_info_valid, PA_ERR_BADSTATE);
-
-    return &s->timing_info;
-}
-
-const pa_sample_spec* pa_stream_get_sample_spec(pa_stream *s) {
-    assert(s);
-    assert(s->ref >= 1);
-
-    return &s->sample_spec;
-}
-
-const pa_channel_map* pa_stream_get_channel_map(pa_stream *s) {
-    assert(s);
-    assert(s->ref >= 1);
-
-    return &s->channel_map;
-}
-
-const pa_buffer_attr* pa_stream_get_buffer_attr(pa_stream *s) {
-    assert(s);
-    assert(s->ref >= 1);
-
-    PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
-    PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
-    PA_CHECK_VALIDITY_RETURN_NULL(s->context,
-        pa_context_get_server_protocol_version(s->context) >= 9, PA_ERR_NODATA);
-
-    return &s->buffer_attr;
-}