diff options
Diffstat (limited to 'src/pulse/stream.c')
| -rw-r--r-- | src/pulse/stream.c | 2927 |
1 files changed, 2927 insertions, 0 deletions
diff --git a/src/pulse/stream.c b/src/pulse/stream.c new file mode 100644 index 0000000..f0c8034 --- /dev/null +++ b/src/pulse/stream.c @@ -0,0 +1,2927 @@ +/*** + This file is part of PulseAudio. + + Copyright 2004-2006 Lennart Poettering + Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB + + 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 <string.h> +#include <stdio.h> +#include <string.h> + +#include <pulse/def.h> +#include <pulse/timeval.h> +#include <pulse/rtclock.h> +#include <pulse/xmalloc.h> +#include <pulse/fork-detect.h> + +#include <pulsecore/pstream-util.h> +#include <pulsecore/sample-util.h> +#include <pulsecore/log.h> +#include <pulsecore/hashmap.h> +#include <pulsecore/macro.h> +#include <pulsecore/core-rtclock.h> +#include <pulsecore/core-util.h> + +#include "internal.h" +#include "stream.h" + +/* #define STREAM_DEBUG */ + +#define AUTO_TIMING_INTERVAL_START_USEC (10*PA_USEC_PER_MSEC) +#define AUTO_TIMING_INTERVAL_END_USEC (1500*PA_USEC_PER_MSEC) + +#define SMOOTHER_ADJUST_TIME (1000*PA_USEC_PER_MSEC) +#define SMOOTHER_HISTORY_TIME (5000*PA_USEC_PER_MSEC) +#define SMOOTHER_MIN_HISTORY (4) + +pa_stream *pa_stream_new(pa_context *c, const char *name, const pa_sample_spec *ss, const pa_channel_map *map) { + return pa_stream_new_with_proplist(c, name, ss, map, NULL); +} + +static void reset_callbacks(pa_stream *s) { + 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->moved_callback = NULL; + s->moved_userdata = NULL; + s->suspended_callback = NULL; + s->suspended_userdata = NULL; + s->started_callback = NULL; + s->started_userdata = NULL; + s->event_callback = NULL; + s->event_userdata = NULL; + s->buffer_attr_callback = NULL; + s->buffer_attr_userdata = NULL; +} + +static pa_stream *pa_stream_new_with_proplist_internal( + pa_context *c, + const char *name, + const pa_sample_spec *ss, + const pa_channel_map *map, + pa_format_info * const *formats, + unsigned int n_formats, + pa_proplist *p) { + + pa_stream *s; + unsigned int i; + + pa_assert(c); + pa_assert(PA_REFCNT_VALUE(c) >= 1); + pa_assert((ss == NULL && map == NULL) || (formats == NULL && n_formats == 0)); + pa_assert(n_formats < PA_MAX_FORMATS); + + PA_CHECK_VALIDITY_RETURN_NULL(c, !pa_detect_fork(), PA_ERR_FORKED); + PA_CHECK_VALIDITY_RETURN_NULL(c, name || (p && pa_proplist_contains(p, PA_PROP_MEDIA_NAME)), PA_ERR_INVALID); + + s = pa_xnew(pa_stream, 1); + PA_REFCNT_INIT(s); + s->context = c; + s->mainloop = c->mainloop; + + s->direction = PA_STREAM_NODIRECTION; + s->state = PA_STREAM_UNCONNECTED; + s->flags = 0; + + if (ss) + s->sample_spec = *ss; + else + pa_sample_spec_init(&s->sample_spec); + + if (map) + s->channel_map = *map; + else + pa_channel_map_init(&s->channel_map); + + s->n_formats = 0; + if (formats) { + s->n_formats = n_formats; + for (i = 0; i < n_formats; i++) + s->req_formats[i] = pa_format_info_copy(formats[i]); + } + + /* We'll get the final negotiated format after connecting */ + s->format = NULL; + + s->direct_on_input = PA_INVALID_INDEX; + + s->proplist = p ? pa_proplist_copy(p) : pa_proplist_new(); + if (name) + pa_proplist_sets(s->proplist, PA_PROP_MEDIA_NAME, name); + + s->channel = 0; + s->channel_valid = false; + s->syncid = c->csyncid++; + s->stream_index = PA_INVALID_INDEX; + + s->requested_bytes = 0; + memset(&s->buffer_attr, 0, sizeof(s->buffer_attr)); + + /* We initialize the target length here, so that if the user + * passes no explicit buffering metrics the default is similar to + * what older PA versions provided. */ + + s->buffer_attr.maxlength = (uint32_t) -1; + if (ss) + s->buffer_attr.tlength = (uint32_t) pa_usec_to_bytes(250*PA_USEC_PER_MSEC, ss); /* 250ms of buffering */ + else { + /* FIXME: We assume a worst-case compressed format corresponding to + * 48000 Hz, 2 ch, S16 PCM, but this can very well be incorrect */ + pa_sample_spec tmp_ss = { + .format = PA_SAMPLE_S16NE, + .rate = 48000, + .channels = 2, + }; + s->buffer_attr.tlength = (uint32_t) pa_usec_to_bytes(250*PA_USEC_PER_MSEC, &tmp_ss); /* 250ms of buffering */ + } + s->buffer_attr.minreq = (uint32_t) -1; + s->buffer_attr.prebuf = (uint32_t) -1; + s->buffer_attr.fragsize = (uint32_t) -1; + + s->device_index = PA_INVALID_INDEX; + s->device_name = NULL; + s->suspended = false; + s->corked = false; + + s->write_memblock = NULL; + s->write_data = NULL; + + pa_memchunk_reset(&s->peek_memchunk); + s->peek_data = NULL; + s->record_memblockq = NULL; + + memset(&s->timing_info, 0, sizeof(s->timing_info)); + s->timing_info_valid = false; + + s->previous_time = 0; + s->latest_underrun_at_index = -1; + + 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->auto_timing_update_event = NULL; + s->auto_timing_update_requested = false; + s->auto_timing_interval_usec = AUTO_TIMING_INTERVAL_START_USEC; + + reset_callbacks(s); + + s->smoother = NULL; + + /* 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; +} + +pa_stream *pa_stream_new_with_proplist( + pa_context *c, + const char *name, + const pa_sample_spec *ss, + const pa_channel_map *map, + pa_proplist *p) { + + pa_channel_map tmap; + + PA_CHECK_VALIDITY_RETURN_NULL(c, ss && pa_sample_spec_valid(ss), PA_ERR_INVALID); + PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 12 || (ss->format != PA_SAMPLE_S32LE && ss->format != PA_SAMPLE_S32BE), PA_ERR_NOTSUPPORTED); + PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 15 || (ss->format != PA_SAMPLE_S24LE && ss->format != PA_SAMPLE_S24BE), PA_ERR_NOTSUPPORTED); + PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 15 || (ss->format != PA_SAMPLE_S24_32LE && ss->format != PA_SAMPLE_S24_32BE), PA_ERR_NOTSUPPORTED); + PA_CHECK_VALIDITY_RETURN_NULL(c, !map || (pa_channel_map_valid(map) && map->channels == ss->channels), PA_ERR_INVALID); + + if (!map) + PA_CHECK_VALIDITY_RETURN_NULL(c, map = pa_channel_map_init_auto(&tmap, ss->channels, PA_CHANNEL_MAP_DEFAULT), PA_ERR_INVALID); + + return pa_stream_new_with_proplist_internal(c, name, ss, map, NULL, 0, p); +} + +pa_stream *pa_stream_new_extended( + pa_context *c, + const char *name, + pa_format_info * const *formats, + unsigned int n_formats, + pa_proplist *p) { + + PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 21, PA_ERR_NOTSUPPORTED); + + return pa_stream_new_with_proplist_internal(c, name, NULL, NULL, formats, n_formats, p); +} + +static void stream_unlink(pa_stream *s) { + pa_operation *o, *n; + pa_assert(s); + + if (!s->context) + return; + + /* Detach from context */ + + /* Unref all operation objects 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_hashmap_remove((s->direction == PA_STREAM_RECORD) ? s->context->record_streams : s->context->playback_streams, PA_UINT32_TO_PTR(s->channel)); + s->channel = 0; + s->channel_valid = false; + } + + PA_LLIST_REMOVE(pa_stream, s->context->streams, s); + pa_stream_unref(s); + + s->context = NULL; + + if (s->auto_timing_update_event) { + pa_assert(s->mainloop); + s->mainloop->time_free(s->auto_timing_update_event); + } + + reset_callbacks(s); +} + +static void stream_free(pa_stream *s) { + unsigned int i; + + pa_assert(s); + + stream_unlink(s); + + if (s->write_memblock) { + if (s->write_data) + pa_memblock_release(s->write_memblock); + pa_memblock_unref(s->write_memblock); + } + + if (s->peek_memchunk.memblock) { + if (s->peek_data) + pa_memblock_release(s->peek_memchunk.memblock); + pa_memblock_unref(s->peek_memchunk.memblock); + } + + if (s->record_memblockq) + pa_memblockq_free(s->record_memblockq); + + if (s->proplist) + pa_proplist_free(s->proplist); + + if (s->smoother) + pa_smoother_free(s->smoother); + + for (i = 0; i < s->n_formats; i++) + pa_format_info_free(s->req_formats[i]); + + if (s->format) + pa_format_info_free(s->format); + + pa_xfree(s->device_name); + pa_xfree(s); +} + +void pa_stream_unref(pa_stream *s) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + if (PA_REFCNT_DEC(s) <= 0) + stream_free(s); +} + +pa_stream* pa_stream_ref(pa_stream *s) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_REFCNT_INC(s); + return s; +} + +pa_stream_state_t pa_stream_get_state(const pa_stream *s) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + return s->state; +} + +pa_context* pa_stream_get_context(const pa_stream *s) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + return s->context; +} + +uint32_t pa_stream_get_index(const pa_stream *s) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_CHECK_VALIDITY_RETURN_ANY(s->context, !pa_detect_fork(), PA_ERR_FORKED, PA_INVALID_INDEX); + PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE, PA_INVALID_INDEX); + + return s->stream_index; +} + +void pa_stream_set_state(pa_stream *s, pa_stream_state_t st) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 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)) + stream_unlink(s); + + pa_stream_unref(s); +} + +static void request_auto_timing_update(pa_stream *s, bool force) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + if (!(s->flags & PA_STREAM_AUTO_TIMING_UPDATE)) + return; + + if (s->state == PA_STREAM_READY && + (force || !s->auto_timing_update_requested)) { + pa_operation *o; + +#ifdef STREAM_DEBUG + pa_log_debug("Automatically requesting new timing data"); +#endif + + if ((o = pa_stream_update_timing_info(s, NULL, NULL))) { + pa_operation_unref(o); + s->auto_timing_update_requested = true; + } + } + + if (s->auto_timing_update_event) { + if (s->suspended && !force) { + pa_assert(s->mainloop); + s->mainloop->time_free(s->auto_timing_update_event); + s->auto_timing_update_event = NULL; + } else { + if (force) + s->auto_timing_interval_usec = AUTO_TIMING_INTERVAL_START_USEC; + + pa_context_rttime_restart(s->context, s->auto_timing_update_event, pa_rtclock_now() + s->auto_timing_interval_usec); + + s->auto_timing_interval_usec = PA_MIN(AUTO_TIMING_INTERVAL_END_USEC, s->auto_timing_interval_usec*2); + } + } +} + +void pa_command_stream_killed(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) { + pa_context *c = userdata; + pa_stream *s; + uint32_t channel; + + pa_assert(pd); + pa_assert(command == PA_COMMAND_PLAYBACK_STREAM_KILLED || command == PA_COMMAND_RECORD_STREAM_KILLED); + pa_assert(t); + pa_assert(c); + pa_assert(PA_REFCNT_VALUE(c) >= 1); + + 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_hashmap_get(command == PA_COMMAND_PLAYBACK_STREAM_KILLED ? c->playback_streams : c->record_streams, PA_UINT32_TO_PTR(channel)))) + goto finish; + + if (s->state != PA_STREAM_READY) + goto finish; + + pa_context_set_error(c, PA_ERR_KILLED); + pa_stream_set_state(s, PA_STREAM_FAILED); + +finish: + pa_context_unref(c); +} + +static void check_smoother_status(pa_stream *s, bool aposteriori, bool force_start, bool force_stop) { + pa_usec_t x; + + pa_assert(s); + pa_assert(!force_start || !force_stop); + + if (!s->smoother) + return; + + x = pa_rtclock_now(); + + if (s->timing_info_valid) { + if (aposteriori) + x -= s->timing_info.transport_usec; + else + x += s->timing_info.transport_usec; + } + + if (s->suspended || s->corked || force_stop) + pa_smoother_pause(s->smoother, x); + else if (force_start || s->buffer_attr.prebuf == 0) { + + if (!s->timing_info_valid && + !aposteriori && + !force_start && + !force_stop && + s->context->version >= 13) { + + /* If the server supports STARTED events we take them as + * indications when audio really starts/stops playing, if + * we don't have any timing info yet -- instead of trying + * to be smart and guessing the server time. Otherwise the + * unknown transport delay adds too much noise to our time + * calculations. */ + + return; + } + + pa_smoother_resume(s->smoother, x, true); + } + + /* Please note that we have no idea if playback actually started + * if prebuf is non-zero! */ +} + +static void auto_timing_update_callback(pa_mainloop_api *m, pa_time_event *e, const struct timeval *t, void *userdata); + +void pa_command_stream_moved(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) { + pa_context *c = userdata; + pa_stream *s; + uint32_t channel; + const char *dn; + bool suspended; + uint32_t di; + pa_usec_t usec = 0; + uint32_t maxlength = 0, fragsize = 0, minreq = 0, tlength = 0, prebuf = 0; + + pa_assert(pd); + pa_assert(command == PA_COMMAND_PLAYBACK_STREAM_MOVED || command == PA_COMMAND_RECORD_STREAM_MOVED); + pa_assert(t); + pa_assert(c); + pa_assert(PA_REFCNT_VALUE(c) >= 1); + + pa_context_ref(c); + + if (c->version < 12) { + pa_context_fail(c, PA_ERR_PROTOCOL); + goto finish; + } + + if (pa_tagstruct_getu32(t, &channel) < 0 || + pa_tagstruct_getu32(t, &di) < 0 || + pa_tagstruct_gets(t, &dn) < 0 || + pa_tagstruct_get_boolean(t, &suspended) < 0) { + pa_context_fail(c, PA_ERR_PROTOCOL); + goto finish; + } + + if (c->version >= 13) { + + if (command == PA_COMMAND_RECORD_STREAM_MOVED) { + if (pa_tagstruct_getu32(t, &maxlength) < 0 || + pa_tagstruct_getu32(t, &fragsize) < 0 || + pa_tagstruct_get_usec(t, &usec) < 0) { + pa_context_fail(c, PA_ERR_PROTOCOL); + goto finish; + } + } else { + if (pa_tagstruct_getu32(t, &maxlength) < 0 || + pa_tagstruct_getu32(t, &tlength) < 0 || + pa_tagstruct_getu32(t, &prebuf) < 0 || + pa_tagstruct_getu32(t, &minreq) < 0 || + pa_tagstruct_get_usec(t, &usec) < 0) { + pa_context_fail(c, PA_ERR_PROTOCOL); + goto finish; + } + } + } + + if (!pa_tagstruct_eof(t)) { + pa_context_fail(c, PA_ERR_PROTOCOL); + goto finish; + } + + if (!dn || di == PA_INVALID_INDEX) { + pa_context_fail(c, PA_ERR_PROTOCOL); + goto finish; + } + + if (!(s = pa_hashmap_get(command == PA_COMMAND_PLAYBACK_STREAM_MOVED ? c->playback_streams : c->record_streams, PA_UINT32_TO_PTR(channel)))) + goto finish; + + if (s->state != PA_STREAM_READY) + goto finish; + + if (c->version >= 13) { + if (s->direction == PA_STREAM_RECORD) + s->timing_info.configured_source_usec = usec; + else + s->timing_info.configured_sink_usec = usec; + + s->buffer_attr.maxlength = maxlength; + s->buffer_attr.fragsize = fragsize; + s->buffer_attr.tlength = tlength; + s->buffer_attr.prebuf = prebuf; + s->buffer_attr.minreq = minreq; + } + + pa_xfree(s->device_name); + s->device_name = pa_xstrdup(dn); + s->device_index = di; + + s->suspended = suspended; + + if ((s->flags & PA_STREAM_AUTO_TIMING_UPDATE) && !suspended && !s->auto_timing_update_event) { + s->auto_timing_interval_usec = AUTO_TIMING_INTERVAL_START_USEC; + s->auto_timing_update_event = pa_context_rttime_new(s->context, pa_rtclock_now() + s->auto_timing_interval_usec, &auto_timing_update_callback, s); + request_auto_timing_update(s, true); + } + + check_smoother_status(s, true, false, false); + request_auto_timing_update(s, true); + + if (s->moved_callback) + s->moved_callback(s, s->moved_userdata); + +finish: + pa_context_unref(c); +} + +void pa_command_stream_buffer_attr(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) { + pa_context *c = userdata; + pa_stream *s; + uint32_t channel; + pa_usec_t usec = 0; + uint32_t maxlength = 0, fragsize = 0, minreq = 0, tlength = 0, prebuf = 0; + + pa_assert(pd); + pa_assert(command == PA_COMMAND_PLAYBACK_BUFFER_ATTR_CHANGED || command == PA_COMMAND_RECORD_BUFFER_ATTR_CHANGED); + pa_assert(t); + pa_assert(c); + pa_assert(PA_REFCNT_VALUE(c) >= 1); + + pa_context_ref(c); + + if (c->version < 15) { + pa_context_fail(c, PA_ERR_PROTOCOL); + goto finish; + } + + if (pa_tagstruct_getu32(t, &channel) < 0) { + pa_context_fail(c, PA_ERR_PROTOCOL); + goto finish; + } + + if (command == PA_COMMAND_RECORD_STREAM_MOVED) { + if (pa_tagstruct_getu32(t, &maxlength) < 0 || + pa_tagstruct_getu32(t, &fragsize) < 0 || + pa_tagstruct_get_usec(t, &usec) < 0) { + pa_context_fail(c, PA_ERR_PROTOCOL); + goto finish; + } + } else { + if (pa_tagstruct_getu32(t, &maxlength) < 0 || + pa_tagstruct_getu32(t, &tlength) < 0 || + pa_tagstruct_getu32(t, &prebuf) < 0 || + pa_tagstruct_getu32(t, &minreq) < 0 || + pa_tagstruct_get_usec(t, &usec) < 0) { + pa_context_fail(c, PA_ERR_PROTOCOL); + goto finish; + } + } + + if (!pa_tagstruct_eof(t)) { + pa_context_fail(c, PA_ERR_PROTOCOL); + goto finish; + } + + if (!(s = pa_hashmap_get(command == PA_COMMAND_PLAYBACK_BUFFER_ATTR_CHANGED ? c->playback_streams : c->record_streams, PA_UINT32_TO_PTR(channel)))) + goto finish; + + if (s->state != PA_STREAM_READY) + goto finish; + + if (s->direction == PA_STREAM_RECORD) + s->timing_info.configured_source_usec = usec; + else + s->timing_info.configured_sink_usec = usec; + + s->buffer_attr.maxlength = maxlength; + s->buffer_attr.fragsize = fragsize; + s->buffer_attr.tlength = tlength; + s->buffer_attr.prebuf = prebuf; + s->buffer_attr.minreq = minreq; + + request_auto_timing_update(s, true); + + if (s->buffer_attr_callback) + s->buffer_attr_callback(s, s->buffer_attr_userdata); + +finish: + pa_context_unref(c); +} + +void pa_command_stream_suspended(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) { + pa_context *c = userdata; + pa_stream *s; + uint32_t channel; + bool suspended; + + pa_assert(pd); + pa_assert(command == PA_COMMAND_PLAYBACK_STREAM_SUSPENDED || command == PA_COMMAND_RECORD_STREAM_SUSPENDED); + pa_assert(t); + pa_assert(c); + pa_assert(PA_REFCNT_VALUE(c) >= 1); + + pa_context_ref(c); + + if (c->version < 12) { + pa_context_fail(c, PA_ERR_PROTOCOL); + goto finish; + } + + if (pa_tagstruct_getu32(t, &channel) < 0 || + pa_tagstruct_get_boolean(t, &suspended) < 0 || + !pa_tagstruct_eof(t)) { + pa_context_fail(c, PA_ERR_PROTOCOL); + goto finish; + } + + if (!(s = pa_hashmap_get(command == PA_COMMAND_PLAYBACK_STREAM_SUSPENDED ? c->playback_streams : c->record_streams, PA_UINT32_TO_PTR(channel)))) + goto finish; + + if (s->state != PA_STREAM_READY) + goto finish; + + s->suspended = suspended; + + if ((s->flags & PA_STREAM_AUTO_TIMING_UPDATE) && !suspended && !s->auto_timing_update_event) { + s->auto_timing_interval_usec = AUTO_TIMING_INTERVAL_START_USEC; + s->auto_timing_update_event = pa_context_rttime_new(s->context, pa_rtclock_now() + s->auto_timing_interval_usec, &auto_timing_update_callback, s); + request_auto_timing_update(s, true); + } + + check_smoother_status(s, true, false, false); + request_auto_timing_update(s, true); + + if (s->suspended_callback) + s->suspended_callback(s, s->suspended_userdata); + +finish: + pa_context_unref(c); +} + +void pa_command_stream_started(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) { + pa_context *c = userdata; + pa_stream *s; + uint32_t channel; + + pa_assert(pd); + pa_assert(command == PA_COMMAND_STARTED); + pa_assert(t); + pa_assert(c); + pa_assert(PA_REFCNT_VALUE(c) >= 1); + + pa_context_ref(c); + + if (c->version < 13) { + pa_context_fail(c, PA_ERR_PROTOCOL); + goto finish; + } + + if (pa_tagstruct_getu32(t, &channel) < 0 || + !pa_tagstruct_eof(t)) { + pa_context_fail(c, PA_ERR_PROTOCOL); + goto finish; + } + + if (!(s = pa_hashmap_get(c->playback_streams, PA_UINT32_TO_PTR(channel)))) + goto finish; + + if (s->state != PA_STREAM_READY) + goto finish; + + check_smoother_status(s, true, true, false); + request_auto_timing_update(s, true); + + if (s->started_callback) + s->started_callback(s, s->started_userdata); + +finish: + pa_context_unref(c); +} + +void pa_command_stream_event(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) { + pa_context *c = userdata; + pa_stream *s; + uint32_t channel; + pa_proplist *pl = NULL; + const char *event; + + pa_assert(pd); + pa_assert(command == PA_COMMAND_PLAYBACK_STREAM_EVENT || command == PA_COMMAND_RECORD_STREAM_EVENT); + pa_assert(t); + pa_assert(c); + pa_assert(PA_REFCNT_VALUE(c) >= 1); + + pa_context_ref(c); + + if (c->version < 15) { + pa_context_fail(c, PA_ERR_PROTOCOL); + goto finish; + } + + pl = pa_proplist_new(); + + if (pa_tagstruct_getu32(t, &channel) < 0 || + pa_tagstruct_gets(t, &event) < 0 || + pa_tagstruct_get_proplist(t, pl) < 0 || + !pa_tagstruct_eof(t) || !event) { + pa_context_fail(c, PA_ERR_PROTOCOL); + goto finish; + } + + if (!(s = pa_hashmap_get(command == PA_COMMAND_PLAYBACK_STREAM_EVENT ? c->playback_streams : c->record_streams, PA_UINT32_TO_PTR(channel)))) + goto finish; + + if (s->state != PA_STREAM_READY) + goto finish; + + if (pa_streq(event, PA_STREAM_EVENT_FORMAT_LOST)) { + /* Let client know what the running time was when the stream had to be killed */ + pa_usec_t stream_time; + if (pa_stream_get_time(s, &stream_time) == 0) + pa_proplist_setf(pl, "stream-time", "%llu", (unsigned long long) stream_time); + } + + if (s->event_callback) + s->event_callback(s, event, pl, s->event_userdata); + +finish: + pa_context_unref(c); + + if (pl) + pa_proplist_free(pl); +} + +void pa_command_request(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) { + pa_stream *s; + pa_context *c = userdata; + uint32_t bytes, channel; + + pa_assert(pd); + pa_assert(command == PA_COMMAND_REQUEST); + pa_assert(t); + pa_assert(c); + pa_assert(PA_REFCNT_VALUE(c) >= 1); + + 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_hashmap_get(c->playback_streams, PA_UINT32_TO_PTR(channel)))) + goto finish; + + if (s->state != PA_STREAM_READY) + goto finish; + + s->requested_bytes += bytes; + +#ifdef STREAM_DEBUG + pa_log_debug("got request for %lli, now at %lli", (long long) bytes, (long long) s->requested_bytes); +#endif + + if (s->requested_bytes > 0 && s->write_callback) + s->write_callback(s, (size_t) s->requested_bytes, s->write_userdata); + +finish: + pa_context_unref(c); +} + +int64_t pa_stream_get_underflow_index(const pa_stream *p) { + pa_assert(p); + return p->latest_underrun_at_index; +} + +void pa_command_overflow_or_underflow(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) { + pa_stream *s; + pa_context *c = userdata; + uint32_t channel; + int64_t offset = -1; + + pa_assert(pd); + pa_assert(command == PA_COMMAND_OVERFLOW || command == PA_COMMAND_UNDERFLOW); + pa_assert(t); + pa_assert(c); + pa_assert(PA_REFCNT_VALUE(c) >= 1); + + pa_context_ref(c); + + if (pa_tagstruct_getu32(t, &channel) < 0) { + pa_context_fail(c, PA_ERR_PROTOCOL); + goto finish; + } + + if (c->version >= 23 && command == PA_COMMAND_UNDERFLOW) { + if (pa_tagstruct_gets64(t, &offset) < 0) { + pa_context_fail(c, PA_ERR_PROTOCOL); + goto finish; + } + } + + if (!pa_tagstruct_eof(t)) { + pa_context_fail(c, PA_ERR_PROTOCOL); + goto finish; + } + + if (!(s = pa_hashmap_get(c->playback_streams, PA_UINT32_TO_PTR(channel)))) + goto finish; + + if (s->state != PA_STREAM_READY) + goto finish; + + if (offset != -1) + s->latest_underrun_at_index = offset; + + if (s->buffer_attr.prebuf > 0) + check_smoother_status(s, true, false, true); + + request_auto_timing_update(s, true); + + 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 invalidate_indexes(pa_stream *s, bool r, bool w) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + +#ifdef STREAM_DEBUG + pa_log_debug("invalidate r:%u w:%u tag:%u", r, w, s->context->ctag); +#endif + + 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 = true; + +#ifdef STREAM_DEBUG + pa_log_debug("write_index invalidated"); +#endif + } + + if (r) { + s->read_index_not_before = s->context->ctag; + + if (s->timing_info_valid) + s->timing_info.read_index_corrupt = true; + +#ifdef STREAM_DEBUG + pa_log_debug("read_index invalidated"); +#endif + } + + request_auto_timing_update(s, true); +} + +static void auto_timing_update_callback(pa_mainloop_api *m, pa_time_event *e, const struct timeval *t, void *userdata) { + pa_stream *s = userdata; + + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + pa_stream_ref(s); + request_auto_timing_update(s, false); + pa_stream_unref(s); +} + +static void create_stream_complete(pa_stream *s) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + pa_assert(s->state == PA_STREAM_CREATING); + + pa_stream_set_state(s, PA_STREAM_READY); + + if (s->requested_bytes > 0 && s->write_callback) + s->write_callback(s, (size_t) s->requested_bytes, s->write_userdata); + + if (s->flags & PA_STREAM_AUTO_TIMING_UPDATE) { + s->auto_timing_interval_usec = AUTO_TIMING_INTERVAL_START_USEC; + pa_assert(!s->auto_timing_update_event); + s->auto_timing_update_event = pa_context_rttime_new(s->context, pa_rtclock_now() + s->auto_timing_interval_usec, &auto_timing_update_callback, s); + + request_auto_timing_update(s, true); + } + + check_smoother_status(s, true, false, false); +} + +static void patch_buffer_attr(pa_stream *s, pa_buffer_attr *attr, pa_stream_flags_t *flags) { + const char *e; + + pa_assert(s); + pa_assert(attr); + + if ((e = getenv("PULSE_LATENCY_MSEC"))) { + uint32_t ms; + pa_sample_spec ss; + + pa_sample_spec_init(&ss); + + if (pa_sample_spec_valid(&s->sample_spec)) + ss = s->sample_spec; + else if (s->n_formats == 1) + pa_format_info_to_sample_spec(s->req_formats[0], &ss, NULL); + + if (pa_atou(e, &ms) < 0 || ms <= 0) + pa_log_debug("Failed to parse $PULSE_LATENCY_MSEC: %s", e); + else if (!pa_sample_spec_valid(&s->sample_spec)) + pa_log_debug("Ignoring $PULSE_LATENCY_MSEC: %s (invalid sample spec)", e); + else { + attr->maxlength = (uint32_t) -1; + attr->tlength = pa_usec_to_bytes(ms * PA_USEC_PER_MSEC, &ss); + attr->minreq = (uint32_t) -1; + attr->prebuf = (uint32_t) -1; + attr->fragsize = attr->tlength; + + if (flags) + *flags |= PA_STREAM_ADJUST_LATENCY; + } + } + + if (s->context->version >= 13) + return; + + /* Version older than 0.9.10 didn't do server side buffer_attr + * selection, hence we have to fake it on the client side. */ + + /* We choose fairly conservative values here, to not confuse + * old clients with extremely large playback buffers */ + + if (attr->maxlength == (uint32_t) -1) + attr->maxlength = 4*1024*1024; /* 4MB is the maximum queue length PulseAudio <= 0.9.9 supported. */ + + if (attr->tlength == (uint32_t) -1) + attr->tlength = (uint32_t) pa_usec_to_bytes(250*PA_USEC_PER_MSEC, &s->sample_spec); /* 250ms of buffering */ + + if (attr->minreq == (uint32_t) -1) + attr->minreq = (attr->tlength)/5; /* Ask for more data when there are only 200ms left in the playback buffer */ + + if (attr->prebuf == (uint32_t) -1) + attr->prebuf = attr->tlength; /* Start to play only when the playback is fully filled up once */ + + if (attr->fragsize == (uint32_t) -1) + attr->fragsize = attr->tlength; /* Pass data to the app only when the buffer is filled up once */ +} + +void pa_create_stream_callback(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) { + pa_stream *s = userdata; + uint32_t requested_bytes = 0; + + pa_assert(pd); + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + pa_assert(s->state == PA_STREAM_CREATING); + + pa_stream_ref(s); + + if (command != PA_COMMAND_REPLY) { + if (pa_context_handle_error(s->context, command, t, false) < 0) + goto finish; + + pa_stream_set_state(s, PA_STREAM_FAILED); + goto finish; + } + + if (pa_tagstruct_getu32(t, &s->channel) < 0 || + s->channel == PA_INVALID_INDEX || + ((s->direction != PA_STREAM_UPLOAD) && (pa_tagstruct_getu32(t, &s->stream_index) < 0 || s->stream_index == PA_INVALID_INDEX)) || + ((s->direction != PA_STREAM_RECORD) && pa_tagstruct_getu32(t, &requested_bytes) < 0)) { + pa_context_fail(s->context, PA_ERR_PROTOCOL); + goto finish; + } + + s->requested_bytes = (int64_t) requested_bytes; + + if (s->context->version >= 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 (s->context->version >= 12 && s->direction != PA_STREAM_UPLOAD) { + pa_sample_spec ss; + pa_channel_map cm; + const char *dn = NULL; + bool suspended; + + if (pa_tagstruct_get_sample_spec(t, &ss) < 0 || + pa_tagstruct_get_channel_map(t, &cm) < 0 || + pa_tagstruct_getu32(t, &s->device_index) < 0 || + pa_tagstruct_gets(t, &dn) < 0 || + pa_tagstruct_get_boolean(t, &suspended) < 0) { + pa_context_fail(s->context, PA_ERR_PROTOCOL); + goto finish; + } + + if (!dn || s->device_index == PA_INVALID_INDEX || + ss.channels != cm.channels || + !pa_channel_map_valid(&cm) || + !pa_sample_spec_valid(&ss) || + (s->n_formats == 0 && ( + (!(s->flags & PA_STREAM_FIX_FORMAT) && ss.format != s->sample_spec.format) || + (!(s->flags & PA_STREAM_FIX_RATE) && ss.rate != s->sample_spec.rate) || + (!(s->flags & PA_STREAM_FIX_CHANNELS) && !pa_channel_map_equal(&cm, &s->channel_map))))) { + pa_context_fail(s->context, PA_ERR_PROTOCOL); + goto finish; + } + + pa_xfree(s->device_name); + s->device_name = pa_xstrdup(dn); + s->suspended = suspended; + + s->channel_map = cm; + s->sample_spec = ss; + } + + if (s->context->version >= 13 && s->direction != PA_STREAM_UPLOAD) { + pa_usec_t usec; + + if (pa_tagstruct_get_usec(t, &usec) < 0) { + pa_context_fail(s->context, PA_ERR_PROTOCOL); + goto finish; + } + + if (s->direction == PA_STREAM_RECORD) + s->timing_info.configured_source_usec = usec; + else + s->timing_info.configured_sink_usec = usec; + } + + if ((s->context->version >= 21 && s->direction == PA_STREAM_PLAYBACK) + || s->context->version >= 22) { + + pa_format_info *f = pa_format_info_new(); + + if (pa_tagstruct_get_format_info(t, f) < 0 || !pa_format_info_valid(f)) { + pa_format_info_free(f); + if (s->n_formats > 0) { + /* We used the extended API, so we should have got back a proper format */ + pa_context_fail(s->context, PA_ERR_PROTOCOL); + goto finish; + } + } else + s->format = f; + } + + if (!pa_tagstruct_eof(t)) { + pa_context_fail(s->context, PA_ERR_PROTOCOL); + goto finish; + } + + if (s->direction == PA_STREAM_RECORD) { + pa_assert(!s->record_memblockq); + + s->record_memblockq = pa_memblockq_new( + "client side record memblockq", + 0, + s->buffer_attr.maxlength, + 0, + &s->sample_spec, + 1, + 0, + 0, + NULL); + } + + s->channel_valid = true; + pa_hashmap_put((s->direction == PA_STREAM_RECORD) ? s->context->record_streams : s->context->playback_streams, PA_UINT32_TO_PTR(s->channel), s); + + create_stream_complete(s); + +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; + bool volume_set = !!volume; + pa_cvolume cv; + uint32_t i; + + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + pa_assert(direction == PA_STREAM_PLAYBACK || direction == PA_STREAM_RECORD); + + PA_CHECK_VALIDITY(s->context, !pa_detect_fork(), PA_ERR_FORKED); + PA_CHECK_VALIDITY(s->context, s->state == PA_STREAM_UNCONNECTED, PA_ERR_BADSTATE); + PA_CHECK_VALIDITY(s->context, s->direct_on_input == PA_INVALID_INDEX || direction == PA_STREAM_RECORD, PA_ERR_BADSTATE); + PA_CHECK_VALIDITY(s->context, !(flags & ~(PA_STREAM_START_CORKED| + PA_STREAM_INTERPOLATE_TIMING| + PA_STREAM_NOT_MONOTONIC| + PA_STREAM_AUTO_TIMING_UPDATE| + PA_STREAM_NO_REMAP_CHANNELS| + PA_STREAM_NO_REMIX_CHANNELS| + PA_STREAM_FIX_FORMAT| + PA_STREAM_FIX_RATE| + PA_STREAM_FIX_CHANNELS| + PA_STREAM_DONT_MOVE| + PA_STREAM_VARIABLE_RATE| + PA_STREAM_PEAK_DETECT| + PA_STREAM_START_MUTED| + PA_STREAM_ADJUST_LATENCY| + PA_STREAM_EARLY_REQUESTS| + PA_STREAM_DONT_INHIBIT_AUTO_SUSPEND| + PA_STREAM_START_UNMUTED| + PA_STREAM_FAIL_ON_SUSPEND| + PA_STREAM_RELATIVE_VOLUME| + PA_STREAM_PASSTHROUGH)), PA_ERR_INVALID); + + PA_CHECK_VALIDITY(s->context, s->context->version >= 12 || !(flags & PA_STREAM_VARIABLE_RATE), PA_ERR_NOTSUPPORTED); + PA_CHECK_VALIDITY(s->context, s->context->version >= 13 || !(flags & PA_STREAM_PEAK_DETECT), PA_ERR_NOTSUPPORTED); + PA_CHECK_VALIDITY(s->context, s->context->state == PA_CONTEXT_READY, PA_ERR_BADSTATE); + /* Although some of the other flags are not supported on older + * version, we don't check for them here, because it doesn't hurt + * when they are passed but actually not supported. This makes + * client development easier */ + + PA_CHECK_VALIDITY(s->context, direction == PA_STREAM_RECORD || !(flags & (PA_STREAM_PEAK_DETECT)), PA_ERR_INVALID); + PA_CHECK_VALIDITY(s->context, !sync_stream || (direction == PA_STREAM_PLAYBACK && sync_stream->direction == PA_STREAM_PLAYBACK), PA_ERR_INVALID); + PA_CHECK_VALIDITY(s->context, (flags & (PA_STREAM_ADJUST_LATENCY|PA_STREAM_EARLY_REQUESTS)) != (PA_STREAM_ADJUST_LATENCY|PA_STREAM_EARLY_REQUESTS), PA_ERR_INVALID); + + pa_stream_ref(s); + + s->direction = direction; + + if (sync_stream) + s->syncid = sync_stream->syncid; + + if (attr) + s->buffer_attr = *attr; + patch_buffer_attr(s, &s->buffer_attr, &flags); + + s->flags = flags; + s->corked = !!(flags & PA_STREAM_START_CORKED); + + if (flags & PA_STREAM_INTERPOLATE_TIMING) { + pa_usec_t x; + + x = pa_rtclock_now(); + + pa_assert(!s->smoother); + s->smoother = pa_smoother_new( + SMOOTHER_ADJUST_TIME, + SMOOTHER_HISTORY_TIME, + !(flags & PA_STREAM_NOT_MONOTONIC), + true, + SMOOTHER_MIN_HISTORY, + x, + true); + } + + if (!dev) + dev = s->direction == PA_STREAM_PLAYBACK ? s->context->conf->default_sink : s->context->conf->default_source; + + t = pa_tagstruct_command( + s->context, + (uint32_t) (s->direction == PA_STREAM_PLAYBACK ? PA_COMMAND_CREATE_PLAYBACK_STREAM : PA_COMMAND_CREATE_RECORD_STREAM), + &tag); + + if (s->context->version < 13) + pa_tagstruct_puts(t, pa_proplist_gets(s->proplist, PA_PROP_MEDIA_NAME)); + + pa_tagstruct_put( + t, + 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, s->corked, + PA_TAG_INVALID); + + if (!volume) { + if (pa_sample_spec_valid(&s->sample_spec)) + volume = pa_cvolume_reset(&cv, s->sample_spec.channels); + else { + /* This is not really relevant, since no volume was set, and + * the real number of channels is embedded in the format_info + * structure */ + volume = pa_cvolume_reset(&cv, PA_CHANNELS_MAX); + } + } + + if (s->direction == PA_STREAM_PLAYBACK) { + 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); + + pa_tagstruct_put_cvolume(t, volume); + } else + pa_tagstruct_putu32(t, s->buffer_attr.fragsize); + + if (s->context->version >= 12) { + pa_tagstruct_put( + t, + PA_TAG_BOOLEAN, flags & PA_STREAM_NO_REMAP_CHANNELS, + PA_TAG_BOOLEAN, flags & PA_STREAM_NO_REMIX_CHANNELS, + PA_TAG_BOOLEAN, flags & PA_STREAM_FIX_FORMAT, + PA_TAG_BOOLEAN, flags & PA_STREAM_FIX_RATE, + PA_TAG_BOOLEAN, flags & PA_STREAM_FIX_CHANNELS, + PA_TAG_BOOLEAN, flags & PA_STREAM_DONT_MOVE, + PA_TAG_BOOLEAN, flags & PA_STREAM_VARIABLE_RATE, + PA_TAG_INVALID); + } + + if (s->context->version >= 13) { + + if (s->direction == PA_STREAM_PLAYBACK) + pa_tagstruct_put_boolean(t, flags & PA_STREAM_START_MUTED); + else + pa_tagstruct_put_boolean(t, flags & PA_STREAM_PEAK_DETECT); + + pa_tagstruct_put( + t, + PA_TAG_BOOLEAN, flags & PA_STREAM_ADJUST_LATENCY, + PA_TAG_PROPLIST, s->proplist, + PA_TAG_INVALID); + + if (s->direction == PA_STREAM_RECORD) + pa_tagstruct_putu32(t, s->direct_on_input); + } + + if (s->context->version >= 14) { + + if (s->direction == PA_STREAM_PLAYBACK) + pa_tagstruct_put_boolean(t, volume_set); + + pa_tagstruct_put_boolean(t, flags & PA_STREAM_EARLY_REQUESTS); + } + + if (s->context->version >= 15) { + + if (s->direction == PA_STREAM_PLAYBACK) + pa_tagstruct_put_boolean(t, flags & (PA_STREAM_START_MUTED|PA_STREAM_START_UNMUTED)); + + pa_tagstruct_put_boolean(t, flags & PA_STREAM_DONT_INHIBIT_AUTO_SUSPEND); + pa_tagstruct_put_boolean(t, flags & PA_STREAM_FAIL_ON_SUSPEND); + } + + if (s->context->version >= 17 && s->direction == PA_STREAM_PLAYBACK) + pa_tagstruct_put_boolean(t, flags & PA_STREAM_RELATIVE_VOLUME); + + if (s->context->version >= 18 && s->direction == PA_STREAM_PLAYBACK) + pa_tagstruct_put_boolean(t, flags & (PA_STREAM_PASSTHROUGH)); + + if ((s->context->version >= 21 && s->direction == PA_STREAM_PLAYBACK) + || s->context->version >= 22) { + + pa_tagstruct_putu8(t, s->n_formats); + for (i = 0; i < s->n_formats; i++) + pa_tagstruct_put_format_info(t, s->req_formats[i]); + } + + if (s->context->version >= 22 && s->direction == PA_STREAM_RECORD) { + pa_tagstruct_put_cvolume(t, volume); + pa_tagstruct_put_boolean(t, flags & PA_STREAM_START_MUTED); + pa_tagstruct_put_boolean(t, volume_set); + pa_tagstruct_put_boolean(t, flags & (PA_STREAM_START_MUTED|PA_STREAM_START_UNMUTED)); + pa_tagstruct_put_boolean(t, flags & PA_STREAM_RELATIVE_VOLUME); + pa_tagstruct_put_boolean(t, flags & (PA_STREAM_PASSTHROUGH)); + } + + 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, + const pa_cvolume *volume, + pa_stream *sync_stream) { + + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 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) { + + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + return create_stream(PA_STREAM_RECORD, s, dev, attr, flags, NULL, NULL); +} + +int pa_stream_begin_write( + pa_stream *s, + void **data, + size_t *nbytes) { + + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_CHECK_VALIDITY(s->context, !pa_detect_fork(), PA_ERR_FORKED); + 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, data, PA_ERR_INVALID); + PA_CHECK_VALIDITY(s->context, nbytes && *nbytes != 0, PA_ERR_INVALID); + + if (*nbytes != (size_t) -1) { + size_t m, fs; + + m = pa_mempool_block_size_max(s->context->mempool); + fs = pa_frame_size(&s->sample_spec); + + m = (m / fs) * fs; + if (*nbytes > m) + *nbytes = m; + } + + if (!s->write_memblock) { + s->write_memblock = pa_memblock_new(s->context->mempool, *nbytes); + s->write_data = pa_memblock_acquire(s->write_memblock); + } + + *data = s->write_data; + *nbytes = pa_memblock_get_length(s->write_memblock); + + return 0; +} + +int pa_stream_cancel_write( + pa_stream *s) { + + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_CHECK_VALIDITY(s->context, !pa_detect_fork(), PA_ERR_FORKED); + 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, s->write_memblock, PA_ERR_BADSTATE); + + pa_assert(s->write_data); + + pa_memblock_release(s->write_memblock); + pa_memblock_unref(s->write_memblock); + s->write_memblock = NULL; + s->write_data = NULL; + + return 0; +} + +int pa_stream_write_ext_free( + pa_stream *s, + const void *data, + size_t length, + pa_free_cb_t free_cb, + void *free_cb_data, + int64_t offset, + pa_seek_mode_t seek) { + + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + pa_assert(data); + + PA_CHECK_VALIDITY(s->context, !pa_detect_fork(), PA_ERR_FORKED); + 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); + PA_CHECK_VALIDITY(s->context, + !s->write_memblock || + ((data >= s->write_data) && + ((const char*) data + length <= (const char*) s->write_data + pa_memblock_get_length(s->write_memblock))), + PA_ERR_INVALID); + PA_CHECK_VALIDITY(s->context, offset % pa_frame_size(&s->sample_spec) == 0, PA_ERR_INVALID); + PA_CHECK_VALIDITY(s->context, length % pa_frame_size(&s->sample_spec) == 0, PA_ERR_INVALID); + PA_CHECK_VALIDITY(s->context, !free_cb || !s->write_memblock, PA_ERR_INVALID); + + if (s->write_memblock) { + pa_memchunk chunk; + + /* pa_stream_write_begin() was called before */ + + pa_memblock_release(s->write_memblock); + + chunk.memblock = s->write_memblock; + chunk.index = (const char *) data - (const char *) s->write_data; + chunk.length = length; + + s->write_memblock = NULL; + s->write_data = NULL; + + pa_pstream_send_memblock(s->context->pstream, s->channel, offset, seek, &chunk); + pa_memblock_unref(chunk.memblock); + + } else { + pa_seek_mode_t t_seek = seek; + int64_t t_offset = offset; + size_t t_length = length; + const void *t_data = data; + + /* pa_stream_write_begin() was not called before */ + + while (t_length > 0) { + pa_memchunk chunk; + + chunk.index = 0; + + if (free_cb && !pa_pstream_get_shm(s->context->pstream)) { + chunk.memblock = pa_memblock_new_user(s->context->mempool, (void*) t_data, t_length, free_cb, free_cb_data, 1); + chunk.length = t_length; + } else { + void *d; + size_t blk_size_max; + + /* Break large audio streams into _aligned_ blocks or the + * other endpoint will happily discard them upon arrival. */ + blk_size_max = pa_frame_align(pa_mempool_block_size_max(s->context->mempool), &s->sample_spec); + chunk.length = PA_MIN(t_length, blk_size_max); + chunk.memblock = pa_memblock_new(s->context->mempool, chunk.length); + + d = pa_memblock_acquire(chunk.memblock); + memcpy(d, t_data, chunk.length); + pa_memblock_release(chunk.memblock); + } + + pa_pstream_send_memblock(s->context->pstream, s->channel, t_offset, t_seek, &chunk); + + t_offset = 0; + t_seek = PA_SEEK_RELATIVE; + + t_data = (const uint8_t*) t_data + chunk.length; + t_length -= chunk.length; + + pa_memblock_unref(chunk.memblock); + } + + if (free_cb && pa_pstream_get_shm(s->context->pstream)) + free_cb(free_cb_data); + } + + /* This is obviously wrong since we ignore the seeking index . But + * that's OK, the server side applies the same error */ + s->requested_bytes -= (seek == PA_SEEK_RELATIVE ? offset : 0) + (int64_t) length; + +#ifdef STREAM_DEBUG + pa_log_debug("wrote %lli, now at %lli", (long long) length, (long long) s->requested_bytes); +#endif + + 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 = false; + s->write_index_corrections[s->current_write_index_correction].absolute = true; + s->write_index_corrections[s->current_write_index_correction].value = offset + (int64_t) 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 + (int64_t) length; + } else + s->write_index_corrections[s->current_write_index_correction].corrupt = true; + } + + /* 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 = false; + s->timing_info.write_index = offset + (int64_t) length; + } else if (seek == PA_SEEK_RELATIVE) { + if (!s->timing_info.write_index_corrupt) + s->timing_info.write_index += offset + (int64_t) length; + } else + s->timing_info.write_index_corrupt = true; + } + + if (!s->timing_info_valid || s->timing_info.write_index_corrupt) + request_auto_timing_update(s, true); + } + + return 0; +} + +int pa_stream_write( + pa_stream *s, + const void *data, + size_t length, + pa_free_cb_t free_cb, + int64_t offset, + pa_seek_mode_t seek) { + + return pa_stream_write_ext_free(s, data, length, free_cb, (void*) data, offset, seek); +} + +int pa_stream_peek(pa_stream *s, const void **data, size_t *length) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + pa_assert(data); + pa_assert(length); + + PA_CHECK_VALIDITY(s->context, !pa_detect_fork(), PA_ERR_FORKED); + 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) { + /* record_memblockq is empty. */ + *data = NULL; + *length = 0; + return 0; + + } else if (!s->peek_memchunk.memblock) { + /* record_memblockq isn't empty, but it doesn't have any data at + * the current read index. */ + *data = NULL; + *length = s->peek_memchunk.length; + return 0; + } + + s->peek_data = pa_memblock_acquire(s->peek_memchunk.memblock); + } + + pa_assert(s->peek_data); + *data = (uint8_t*) s->peek_data + s->peek_memchunk.index; + *length = s->peek_memchunk.length; + return 0; +} + +int pa_stream_drop(pa_stream *s) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_CHECK_VALIDITY(s->context, !pa_detect_fork(), PA_ERR_FORKED); + 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.length > 0, PA_ERR_BADSTATE); + + pa_memblockq_drop(s->record_memblockq, 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 += (int64_t) s->peek_memchunk.length; + + if (s->peek_memchunk.memblock) { + pa_assert(s->peek_data); + s->peek_data = NULL; + pa_memblock_release(s->peek_memchunk.memblock); + pa_memblock_unref(s->peek_memchunk.memblock); + } + + pa_memchunk_reset(&s->peek_memchunk); + + return 0; +} + +size_t pa_stream_writable_size(const pa_stream *s) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_CHECK_VALIDITY_RETURN_ANY(s->context, !pa_detect_fork(), PA_ERR_FORKED, (size_t) -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 > 0 ? (size_t) s->requested_bytes : 0; +} + +size_t pa_stream_readable_size(const pa_stream *s) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_CHECK_VALIDITY_RETURN_ANY(s->context, !pa_detect_fork(), PA_ERR_FORKED, (size_t) -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; + + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_CHECK_VALIDITY_RETURN_NULL(s->context, !pa_detect_fork(), PA_ERR_FORKED); + 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); + + /* Ask for a timing update before we cork/uncork to get the best + * accuracy for the transport latency suitable for the + * check_smoother_status() call in the started callback */ + request_auto_timing_update(s, true); + + 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); + + /* This might cause the read index to continue again, hence + * let's request a timing update */ + request_auto_timing_update(s, true); + + return o; +} + +static pa_usec_t calc_time(const pa_stream *s, bool ignore_transport) { + pa_usec_t usec; + + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + pa_assert(s->state == PA_STREAM_READY); + pa_assert(s->direction != PA_STREAM_UPLOAD); + pa_assert(s->timing_info_valid); + pa_assert(s->direction != PA_STREAM_PLAYBACK || !s->timing_info.read_index_corrupt); + pa_assert(s->direction != PA_STREAM_RECORD || !s->timing_info.write_index_corrupt); + + 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 && !s->suspended) { + + if (!ignore_transport) + /* 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 { + pa_assert(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 && !s->suspended) { + + if (!ignore_transport) + /* 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; + } + } + + return usec; +} + +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; + bool playing = false; + uint64_t underrun_for = 0, playing_for = 0; + + pa_assert(pd); + pa_assert(o); + pa_assert(PA_REFCNT_VALUE(o) >= 1); + + if (!o->context || !o->stream) + goto finish; + + i = &o->stream->timing_info; + + o->stream->timing_info_valid = false; + i->write_index_corrupt = true; + i->read_index_corrupt = true; + + if (command != PA_COMMAND_REPLY) { + if (pa_context_handle_error(o->context, command, t, false) < 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, &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_context_fail(o->context, PA_ERR_PROTOCOL); + goto finish; + } + + if (o->context->version >= 13 && + o->stream->direction == PA_STREAM_PLAYBACK) + if (pa_tagstruct_getu64(t, &underrun_for) < 0 || + pa_tagstruct_getu64(t, &playing_for) < 0) { + + pa_context_fail(o->context, PA_ERR_PROTOCOL); + goto finish; + } + + if (!pa_tagstruct_eof(t)) { + pa_context_fail(o->context, PA_ERR_PROTOCOL); + goto finish; + } + o->stream->timing_info_valid = true; + i->write_index_corrupt = false; + i->read_index_corrupt = false; + + i->playing = (int) playing; + i->since_underrun = (int64_t) (playing ? playing_for : underrun_for); + + pa_gettimeofday(&now); + + /* Calculate 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 = true; + 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 = false; + 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 = true; + + if (tag < o->stream->write_index_not_before) + i->write_index_corrupt = true; + + 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_corrupt = true; + } 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 = false; + } else if (!i->write_index_corrupt) { + /* A relative seek was made */ + i->write_index += o->stream->write_index_corrections[j].value; + } + } + + /* Clear old correction entries */ + 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 = false; + } + } + + if (o->stream->direction == PA_STREAM_RECORD) { + /* Read index correction */ + + if (!i->read_index_corrupt) + i->read_index -= (int64_t) pa_memblockq_get_length(o->stream->record_memblockq); + } + + /* Update smoother if we're not corked */ + if (o->stream->smoother && !o->stream->corked) { + pa_usec_t u, x; + + u = x = pa_rtclock_now() - i->transport_usec; + + if (o->stream->direction == PA_STREAM_PLAYBACK && o->context->version >= 13) { + pa_usec_t su; + + /* If we weren't playing then it will take some time + * until the audio will actually come out through the + * speakers. Since we follow that timing here, we need + * to try to fix this up */ + + su = pa_bytes_to_usec((uint64_t) i->since_underrun, &o->stream->sample_spec); + + if (su < i->sink_usec) + x += i->sink_usec - su; + } + + if (!i->playing) + pa_smoother_pause(o->stream->smoother, x); + + /* Update the smoother */ + if ((o->stream->direction == PA_STREAM_PLAYBACK && !i->read_index_corrupt) || + (o->stream->direction == PA_STREAM_RECORD && !i->write_index_corrupt)) + pa_smoother_put(o->stream->smoother, u, calc_time(o->stream, true)); + + if (i->playing) + pa_smoother_resume(o->stream->smoother, x, true); + } + } + + o->stream->auto_timing_update_requested = false; + + 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; + + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_CHECK_VALIDITY_RETURN_NULL(s->context, !pa_detect_fork(), PA_ERR_FORKED); + 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, + (uint32_t) (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 */ + + s->current_write_index_correction = cidx; + + s->write_index_corrections[cidx].valid = true; + s->write_index_corrections[cidx].absolute = false; + s->write_index_corrections[cidx].corrupt = false; + s->write_index_corrections[cidx].tag = tag; + s->write_index_corrections[cidx].value = 0; + } + + return o; +} + +void pa_stream_disconnect_callback(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) { + pa_stream *s = userdata; + + pa_assert(pd); + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + pa_stream_ref(s); + + if (command != PA_COMMAND_REPLY) { + if (pa_context_handle_error(s->context, command, t, false) < 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; + + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_CHECK_VALIDITY(s->context, !pa_detect_fork(), PA_ERR_FORKED); + 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, + (uint32_t) (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) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + if (pa_detect_fork()) + return; + + if (s->state == PA_STREAM_TERMINATED || s->state == PA_STREAM_FAILED) + return; + + 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) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + if (pa_detect_fork()) + return; + + if (s->state == PA_STREAM_TERMINATED || s->state == PA_STREAM_FAILED) + return; + + 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) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + if (pa_detect_fork()) + return; + + if (s->state == PA_STREAM_TERMINATED || s->state == PA_STREAM_FAILED) + return; + + 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) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + if (pa_detect_fork()) + return; + + if (s->state == PA_STREAM_TERMINATED || s->state == PA_STREAM_FAILED) + return; + + 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) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + if (pa_detect_fork()) + return; + + if (s->state == PA_STREAM_TERMINATED || s->state == PA_STREAM_FAILED) + return; + + 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) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + if (pa_detect_fork()) + return; + + if (s->state == PA_STREAM_TERMINATED || s->state == PA_STREAM_FAILED) + return; + + s->latency_update_callback = cb; + s->latency_update_userdata = userdata; +} + +void pa_stream_set_moved_callback(pa_stream *s, pa_stream_notify_cb_t cb, void *userdata) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + if (pa_detect_fork()) + return; + + if (s->state == PA_STREAM_TERMINATED || s->state == PA_STREAM_FAILED) + return; + + s->moved_callback = cb; + s->moved_userdata = userdata; +} + +void pa_stream_set_suspended_callback(pa_stream *s, pa_stream_notify_cb_t cb, void *userdata) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + if (pa_detect_fork()) + return; + + if (s->state == PA_STREAM_TERMINATED || s->state == PA_STREAM_FAILED) + return; + + s->suspended_callback = cb; + s->suspended_userdata = userdata; +} + +void pa_stream_set_started_callback(pa_stream *s, pa_stream_notify_cb_t cb, void *userdata) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + if (pa_detect_fork()) + return; + + if (s->state == PA_STREAM_TERMINATED || s->state == PA_STREAM_FAILED) + return; + + s->started_callback = cb; + s->started_userdata = userdata; +} + +void pa_stream_set_event_callback(pa_stream *s, pa_stream_event_cb_t cb, void *userdata) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + if (pa_detect_fork()) + return; + + if (s->state == PA_STREAM_TERMINATED || s->state == PA_STREAM_FAILED) + return; + + s->event_callback = cb; + s->event_userdata = userdata; +} + +void pa_stream_set_buffer_attr_callback(pa_stream *s, pa_stream_notify_cb_t cb, void *userdata) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + if (pa_detect_fork()) + return; + + if (s->state == PA_STREAM_TERMINATED || s->state == PA_STREAM_FAILED) + return; + + s->buffer_attr_callback = cb; + s->buffer_attr_userdata = userdata; +} + +void pa_stream_simple_ack_callback(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) { + pa_operation *o = userdata; + int success = 1; + + pa_assert(pd); + pa_assert(o); + pa_assert(PA_REFCNT_VALUE(o) >= 1); + + if (!o->context) + goto finish; + + if (command != PA_COMMAND_REPLY) { + if (pa_context_handle_error(o->context, command, t, false) < 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; + + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_CHECK_VALIDITY_RETURN_NULL(s->context, !pa_detect_fork(), PA_ERR_FORKED); + 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); + + /* Ask for a timing update before we cork/uncork to get the best + * accuracy for the transport latency suitable for the + * check_smoother_status() call in the started callback */ + request_auto_timing_update(s, true); + + s->corked = b; + + o = pa_operation_new(s->context, s, (pa_operation_cb_t) cb, userdata); + + t = pa_tagstruct_command( + s->context, + (uint32_t) (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); + + check_smoother_status(s, false, false, false); + + /* This might cause the indexes to hang/start again, hence let's + * request a timing update, after the cork/uncork, too */ + request_auto_timing_update(s, true); + + 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; + + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_CHECK_VALIDITY_RETURN_NULL(s->context, !pa_detect_fork(), PA_ERR_FORKED); + 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_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_CHECK_VALIDITY_RETURN_NULL(s->context, !pa_detect_fork(), PA_ERR_FORKED); + 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); + + /* Ask for a timing update *before* the flush, so that the + * transport usec is as up to date as possible when we get the + * underflow message and update the smoother status*/ + request_auto_timing_update(s, true); + + if (!(o = stream_send_simple_command(s, (uint32_t) (s->direction == PA_STREAM_PLAYBACK ? PA_COMMAND_FLUSH_PLAYBACK_STREAM : PA_COMMAND_FLUSH_RECORD_STREAM), cb, userdata))) + return NULL; + + 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 = true; + + if (s->buffer_attr.prebuf > 0) + check_smoother_status(s, false, false, true); + + /* This will change the write index, but leave the + * read index untouched. */ + invalidate_indexes(s, false, true); + + } else + /* For record streams this has no influence on the write + * index, but the read index might jump. */ + invalidate_indexes(s, true, false); + + /* Note that we do not update requested_bytes here. This is + * because we cannot really know how data actually was dropped + * from the write index due to this. This 'error' will be applied + * by both client and server and hence we should be fine. */ + + return o; +} + +pa_operation* pa_stream_prebuf(pa_stream *s, pa_stream_success_cb_t cb, void *userdata) { + pa_operation *o; + + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_CHECK_VALIDITY_RETURN_NULL(s->context, !pa_detect_fork(), PA_ERR_FORKED); + 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); + PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->buffer_attr.prebuf > 0, PA_ERR_BADSTATE); + + /* Ask for a timing update before we cork/uncork to get the best + * accuracy for the transport latency suitable for the + * check_smoother_status() call in the started callback */ + request_auto_timing_update(s, true); + + if (!(o = stream_send_simple_command(s, PA_COMMAND_PREBUF_PLAYBACK_STREAM, cb, userdata))) + return NULL; + + /* This might cause the read index to hang again, hence + * let's request a timing update */ + request_auto_timing_update(s, true); + + return o; +} + +pa_operation* pa_stream_trigger(pa_stream *s, pa_stream_success_cb_t cb, void *userdata) { + pa_operation *o; + + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_CHECK_VALIDITY_RETURN_NULL(s->context, !pa_detect_fork(), PA_ERR_FORKED); + 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); + PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->buffer_attr.prebuf > 0, PA_ERR_BADSTATE); + + /* Ask for a timing update before we cork/uncork to get the best + * accuracy for the transport latency suitable for the + * check_smoother_status() call in the started callback */ + request_auto_timing_update(s, true); + + if (!(o = stream_send_simple_command(s, PA_COMMAND_TRIGGER_PLAYBACK_STREAM, cb, userdata))) + return NULL; + + /* This might cause the read index to start moving again, hence + * let's request a timing update */ + request_auto_timing_update(s, true); + + 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_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + pa_assert(name); + + PA_CHECK_VALIDITY_RETURN_NULL(s->context, !pa_detect_fork(), PA_ERR_FORKED); + 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->context->version >= 13) { + pa_proplist *p = pa_proplist_new(); + + pa_proplist_sets(p, PA_PROP_MEDIA_NAME, name); + o = pa_stream_proplist_update(s, PA_UPDATE_REPLACE, p, cb, userdata); + pa_proplist_free(p); + } else { + pa_tagstruct *t; + uint32_t tag; + + o = pa_operation_new(s->context, s, (pa_operation_cb_t) cb, userdata); + t = pa_tagstruct_command( + s->context, + (uint32_t) (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; + + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_CHECK_VALIDITY(s->context, !pa_detect_fork(), PA_ERR_FORKED); + 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->smoother) + usec = pa_smoother_get(s->smoother, pa_rtclock_now()); + else + usec = calc_time(s, false); + + /* Make sure the time runs monotonically */ + if (!(s->flags & PA_STREAM_NOT_MONOTONIC)) { + 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(const pa_stream *s, pa_usec_t a, pa_usec_t b, int *negative) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 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; + + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + pa_assert(r_usec); + + PA_CHECK_VALIDITY(s->context, !pa_detect_fork(), PA_ERR_FORKED); + 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((uint64_t) 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) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_CHECK_VALIDITY_RETURN_NULL(s->context, !pa_detect_fork(), PA_ERR_FORKED); + 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_NODATA); + + return &s->timing_info; +} + +const pa_sample_spec* pa_stream_get_sample_spec(pa_stream *s) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_CHECK_VALIDITY_RETURN_NULL(s->context, !pa_detect_fork(), PA_ERR_FORKED); + + return &s->sample_spec; +} + +const pa_channel_map* pa_stream_get_channel_map(pa_stream *s) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_CHECK_VALIDITY_RETURN_NULL(s->context, !pa_detect_fork(), PA_ERR_FORKED); + + return &s->channel_map; +} + +const pa_format_info* pa_stream_get_format_info(const pa_stream *s) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + /* We don't have the format till routing is done */ + PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE); + PA_CHECK_VALIDITY_RETURN_NULL(s->context, !pa_detect_fork(), PA_ERR_FORKED); + + return s->format; +} +const pa_buffer_attr* pa_stream_get_buffer_attr(pa_stream *s) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 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->context->version >= 9, PA_ERR_NOTSUPPORTED); + + return &s->buffer_attr; +} + +static void stream_set_buffer_attr_callback(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) { + pa_operation *o = userdata; + int success = 1; + + pa_assert(pd); + pa_assert(o); + pa_assert(PA_REFCNT_VALUE(o) >= 1); + + if (!o->context) + goto finish; + + if (command != PA_COMMAND_REPLY) { + if (pa_context_handle_error(o->context, command, t, false) < 0) + goto finish; + + success = 0; + } else { + if (o->stream->direction == PA_STREAM_PLAYBACK) { + if (pa_tagstruct_getu32(t, &o->stream->buffer_attr.maxlength) < 0 || + pa_tagstruct_getu32(t, &o->stream->buffer_attr.tlength) < 0 || + pa_tagstruct_getu32(t, &o->stream->buffer_attr.prebuf) < 0 || + pa_tagstruct_getu32(t, &o->stream->buffer_attr.minreq) < 0) { + pa_context_fail(o->context, PA_ERR_PROTOCOL); + goto finish; + } + } else if (o->stream->direction == PA_STREAM_RECORD) { + if (pa_tagstruct_getu32(t, &o->stream->buffer_attr.maxlength) < 0 || + pa_tagstruct_getu32(t, &o->stream->buffer_attr.fragsize) < 0) { + pa_context_fail(o->context, PA_ERR_PROTOCOL); + goto finish; + } + } + + if (o->stream->context->version >= 13) { + pa_usec_t usec; + + if (pa_tagstruct_get_usec(t, &usec) < 0) { + pa_context_fail(o->context, PA_ERR_PROTOCOL); + goto finish; + } + + if (o->stream->direction == PA_STREAM_RECORD) + o->stream->timing_info.configured_source_usec = usec; + else + o->stream->timing_info.configured_sink_usec = usec; + } + + 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_set_buffer_attr(pa_stream *s, const pa_buffer_attr *attr, pa_stream_success_cb_t cb, void *userdata) { + pa_operation *o; + pa_tagstruct *t; + uint32_t tag; + pa_buffer_attr copy; + + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + pa_assert(attr); + + PA_CHECK_VALIDITY_RETURN_NULL(s->context, !pa_detect_fork(), PA_ERR_FORKED); + 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->context->version >= 12, PA_ERR_NOTSUPPORTED); + + /* Ask for a timing update before we cork/uncork to get the best + * accuracy for the transport latency suitable for the + * check_smoother_status() call in the started callback */ + request_auto_timing_update(s, true); + + o = pa_operation_new(s->context, s, (pa_operation_cb_t) cb, userdata); + + t = pa_tagstruct_command( + s->context, + (uint32_t) (s->direction == PA_STREAM_RECORD ? PA_COMMAND_SET_RECORD_STREAM_BUFFER_ATTR : PA_COMMAND_SET_PLAYBACK_STREAM_BUFFER_ATTR), + &tag); + pa_tagstruct_putu32(t, s->channel); + + copy = *attr; + patch_buffer_attr(s, ©, NULL); + attr = © + + pa_tagstruct_putu32(t, attr->maxlength); + + if (s->direction == PA_STREAM_PLAYBACK) + pa_tagstruct_put( + t, + PA_TAG_U32, attr->tlength, + PA_TAG_U32, attr->prebuf, + PA_TAG_U32, attr->minreq, + PA_TAG_INVALID); + else + pa_tagstruct_putu32(t, attr->fragsize); + + if (s->context->version >= 13) + pa_tagstruct_put_boolean(t, !!(s->flags & PA_STREAM_ADJUST_LATENCY)); + + if (s->context->version >= 14) + pa_tagstruct_put_boolean(t, !!(s->flags & PA_STREAM_EARLY_REQUESTS)); + + pa_pstream_send_tagstruct(s->context->pstream, t); + pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, stream_set_buffer_attr_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref); + + /* This might cause changes in the read/write index, hence let's + * request a timing update */ + request_auto_timing_update(s, true); + + return o; +} + +uint32_t pa_stream_get_device_index(const pa_stream *s) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_CHECK_VALIDITY_RETURN_ANY(s->context, !pa_detect_fork(), PA_ERR_FORKED, PA_INVALID_INDEX); + PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE, PA_INVALID_INDEX); + PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE, PA_INVALID_INDEX); + PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->context->version >= 12, PA_ERR_NOTSUPPORTED, PA_INVALID_INDEX); + PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->device_index != PA_INVALID_INDEX, PA_ERR_BADSTATE, PA_INVALID_INDEX); + + return s->device_index; +} + +const char *pa_stream_get_device_name(const pa_stream *s) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_CHECK_VALIDITY_RETURN_NULL(s->context, !pa_detect_fork(), PA_ERR_FORKED); + 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->context->version >= 12, PA_ERR_NOTSUPPORTED); + PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->device_name, PA_ERR_BADSTATE); + + return s->device_name; +} + +int pa_stream_is_suspended(const pa_stream *s) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_CHECK_VALIDITY(s->context, !pa_detect_fork(), PA_ERR_FORKED); + 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->context->version >= 12, PA_ERR_NOTSUPPORTED); + + return s->suspended; +} + +int pa_stream_is_corked(const pa_stream *s) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_CHECK_VALIDITY(s->context, !pa_detect_fork(), PA_ERR_FORKED); + 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); + + return s->corked; +} + +static void stream_update_sample_rate_callback(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) { + pa_operation *o = userdata; + int success = 1; + + pa_assert(pd); + pa_assert(o); + pa_assert(PA_REFCNT_VALUE(o) >= 1); + + if (!o->context) + goto finish; + + if (command != PA_COMMAND_REPLY) { + if (pa_context_handle_error(o->context, command, t, false) < 0) + goto finish; + + success = 0; + } else { + + if (!pa_tagstruct_eof(t)) { + pa_context_fail(o->context, PA_ERR_PROTOCOL); + goto finish; + } + } + + o->stream->sample_spec.rate = PA_PTR_TO_UINT(o->private); + pa_assert(pa_sample_spec_valid(&o->stream->sample_spec)); + + 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_update_sample_rate(pa_stream *s, uint32_t rate, pa_stream_success_cb_t cb, void *userdata) { + pa_operation *o; + pa_tagstruct *t; + uint32_t tag; + + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_CHECK_VALIDITY_RETURN_NULL(s->context, !pa_detect_fork(), PA_ERR_FORKED); + PA_CHECK_VALIDITY_RETURN_NULL(s->context, pa_sample_rate_valid(rate), PA_ERR_INVALID); + 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->flags & PA_STREAM_VARIABLE_RATE, PA_ERR_BADSTATE); + PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->context->version >= 12, PA_ERR_NOTSUPPORTED); + + o = pa_operation_new(s->context, s, (pa_operation_cb_t) cb, userdata); + o->private = PA_UINT_TO_PTR(rate); + + t = pa_tagstruct_command( + s->context, + (uint32_t) (s->direction == PA_STREAM_RECORD ? PA_COMMAND_UPDATE_RECORD_STREAM_SAMPLE_RATE : PA_COMMAND_UPDATE_PLAYBACK_STREAM_SAMPLE_RATE), + &tag); + pa_tagstruct_putu32(t, s->channel); + pa_tagstruct_putu32(t, rate); + + pa_pstream_send_tagstruct(s->context->pstream, t); + pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, stream_update_sample_rate_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref); + + return o; +} + +pa_operation *pa_stream_proplist_update(pa_stream *s, pa_update_mode_t mode, pa_proplist *p, pa_stream_success_cb_t cb, void *userdata) { + pa_operation *o; + pa_tagstruct *t; + uint32_t tag; + + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_CHECK_VALIDITY_RETURN_NULL(s->context, !pa_detect_fork(), PA_ERR_FORKED); + PA_CHECK_VALIDITY_RETURN_NULL(s->context, mode == PA_UPDATE_SET || mode == PA_UPDATE_MERGE || mode == PA_UPDATE_REPLACE, PA_ERR_INVALID); + 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->context->version >= 13, PA_ERR_NOTSUPPORTED); + + o = pa_operation_new(s->context, s, (pa_operation_cb_t) cb, userdata); + + t = pa_tagstruct_command( + s->context, + (uint32_t) (s->direction == PA_STREAM_RECORD ? PA_COMMAND_UPDATE_RECORD_STREAM_PROPLIST : PA_COMMAND_UPDATE_PLAYBACK_STREAM_PROPLIST), + &tag); + pa_tagstruct_putu32(t, s->channel); + pa_tagstruct_putu32(t, (uint32_t) mode); + pa_tagstruct_put_proplist(t, p); + + 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); + + /* Please note that we don't update s->proplist here, because we + * don't export that field */ + + return o; +} + +pa_operation *pa_stream_proplist_remove(pa_stream *s, const char *const keys[], pa_stream_success_cb_t cb, void *userdata) { + pa_operation *o; + pa_tagstruct *t; + uint32_t tag; + const char * const*k; + + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_CHECK_VALIDITY_RETURN_NULL(s->context, !pa_detect_fork(), PA_ERR_FORKED); + PA_CHECK_VALIDITY_RETURN_NULL(s->context, keys && keys[0], PA_ERR_INVALID); + 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->context->version >= 13, PA_ERR_NOTSUPPORTED); + + o = pa_operation_new(s->context, s, (pa_operation_cb_t) cb, userdata); + + t = pa_tagstruct_command( + s->context, + (uint32_t) (s->direction == PA_STREAM_RECORD ? PA_COMMAND_REMOVE_RECORD_STREAM_PROPLIST : PA_COMMAND_REMOVE_PLAYBACK_STREAM_PROPLIST), + &tag); + pa_tagstruct_putu32(t, s->channel); + + for (k = keys; *k; k++) + pa_tagstruct_puts(t, *k); + + pa_tagstruct_puts(t, NULL); + + 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); + + /* Please note that we don't update s->proplist here, because we + * don't export that field */ + + return o; +} + +int pa_stream_set_monitor_stream(pa_stream *s, uint32_t sink_input_idx) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_CHECK_VALIDITY(s->context, !pa_detect_fork(), PA_ERR_FORKED); + PA_CHECK_VALIDITY(s->context, sink_input_idx != PA_INVALID_INDEX, PA_ERR_INVALID); + PA_CHECK_VALIDITY(s->context, s->state == PA_STREAM_UNCONNECTED, PA_ERR_BADSTATE); + PA_CHECK_VALIDITY(s->context, s->context->version >= 13, PA_ERR_NOTSUPPORTED); + + s->direct_on_input = sink_input_idx; + + return 0; +} + +uint32_t pa_stream_get_monitor_stream(const pa_stream *s) { + pa_assert(s); + pa_assert(PA_REFCNT_VALUE(s) >= 1); + + PA_CHECK_VALIDITY_RETURN_ANY(s->context, !pa_detect_fork(), PA_ERR_FORKED, PA_INVALID_INDEX); + PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->direct_on_input != PA_INVALID_INDEX, PA_ERR_BADSTATE, PA_INVALID_INDEX); + PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->context->version >= 13, PA_ERR_NOTSUPPORTED, PA_INVALID_INDEX); + + return s->direct_on_input; +} |