diff options
Diffstat (limited to 'polyp/polyplib-stream.c')
| -rw-r--r-- | polyp/polyplib-stream.c | 807 |
1 files changed, 0 insertions, 807 deletions
diff --git a/polyp/polyplib-stream.c b/polyp/polyplib-stream.c deleted file mode 100644 index 7b9d6863..00000000 --- a/polyp/polyplib-stream.c +++ /dev/null @@ -1,807 +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 "polyplib-internal.h" -#include "xmalloc.h" -#include "pstream-util.h" -#include "util.h" -#include "log.h" - -#define LATENCY_IPOL_INTERVAL_USEC (10000L) - -pa_stream *pa_stream_new(pa_context *c, const char *name, const pa_sample_spec *ss, const pa_channel_map *map) { - pa_stream *s; - assert(c); - assert(ss); - - if (!pa_sample_spec_valid(ss)) - return NULL; - - if (map && !pa_channel_map_valid(map)) - return NULL; - - 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->direction = PA_STREAM_NODIRECTION; - s->name = pa_xstrdup(name); - s->sample_spec = *ss; - - if (map) - s->channel_map = *map; - else - pa_channel_map_init_auto(&s->channel_map, ss->channels); - - s->channel = 0; - s->channel_valid = 0; - s->device_index = PA_INVALID_INDEX; - s->requested_bytes = 0; - s->state = PA_STREAM_DISCONNECTED; - memset(&s->buffer_attr, 0, sizeof(s->buffer_attr)); - - s->mcalign = pa_mcalign_new(pa_frame_size(ss), c->memblock_stat); - - s->counter = 0; - s->previous_time = 0; - s->previous_ipol_time = 0; - - s->corked = 0; - s->interpolate = 0; - - s->ipol_usec = 0; - memset(&s->ipol_timestamp, 0, sizeof(s->ipol_timestamp)); - s->ipol_event = NULL; - s->ipol_requested = 0; - - PA_LLIST_PREPEND(pa_stream, c->streams, s); - - return pa_stream_ref(s); -} - -static void stream_free(pa_stream *s) { - assert(s); - - if (s->ipol_event) { - assert(s->mainloop); - s->mainloop->time_free(s->ipol_event); - } - - pa_mcalign_free(s->mcalign); - - pa_xfree(s->name); - pa_xfree(s); -} - -void pa_stream_unref(pa_stream *s) { - assert(s && s->ref >= 1); - - if (--(s->ref) == 0) - stream_free(s); -} - -pa_stream* pa_stream_ref(pa_stream *s) { - assert(s && s->ref >= 1); - s->ref++; - return s; -} - -pa_stream_state_t pa_stream_get_state(pa_stream *s) { - assert(s && s->ref >= 1); - return s->state; -} - -pa_context* pa_stream_get_context(pa_stream *s) { - assert(s && s->ref >= 1); - return s->context; -} - -uint32_t pa_stream_get_index(pa_stream *s) { - assert(s && s->ref >= 1); - return s->device_index; -} - -void pa_stream_set_state(pa_stream *s, pa_stream_state_t st) { - assert(s && s->ref >= 1); - - if (s->state == st) - return; - - pa_stream_ref(s); - - s->state = st; - - if ((st == PA_STREAM_FAILED || st == PA_STREAM_TERMINATED) && s->context) { - 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); - } - - if (s->state_callback) - s->state_callback(s, s->state_userdata); - - 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 && (command == PA_COMMAND_PLAYBACK_STREAM_KILLED || command == PA_COMMAND_RECORD_STREAM_KILLED) && t && c); - - pa_context_ref(c); - - if (pa_tagstruct_getu32(t, &channel) < 0 || - !pa_tagstruct_eof(t)) { - pa_context_fail(c, PA_ERROR_PROTOCOL); - goto finish; - } - - if (!(s = pa_dynarray_get(command == PA_COMMAND_PLAYBACK_STREAM_KILLED ? c->playback_streams : c->record_streams, channel))) - goto finish; - - c->error = PA_ERROR_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 && command == PA_COMMAND_REQUEST && t && 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_ERROR_PROTOCOL); - goto finish; - } - - if (!(s = pa_dynarray_get(c->playback_streams, channel))) - goto finish; - - if (s->state != PA_STREAM_READY) - goto finish; - - pa_stream_ref(s); - - s->requested_bytes += bytes; - - if (s->requested_bytes && s->write_callback) - s->write_callback(s, s->requested_bytes, s->write_userdata); - - pa_stream_unref(s); - -finish: - pa_context_unref(c); -} - -static void ipol_callback(pa_mainloop_api *m, pa_time_event *e, PA_GCC_UNUSED const struct timeval *tv, void *userdata) { - struct timeval tv2; - pa_stream *s = userdata; - - pa_stream_ref(s); - -/* pa_log("requesting new ipol data\n"); */ - - if (s->state == PA_STREAM_READY && !s->ipol_requested) { - pa_operation_unref(pa_stream_get_latency_info(s, NULL, NULL)); - s->ipol_requested = 1; - } - - pa_gettimeofday(&tv2); - pa_timeval_add(&tv2, LATENCY_IPOL_INTERVAL_USEC); - - m->time_restart(e, &tv2); - - 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 && s && 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_tagstruct_eof(t)) { - pa_context_fail(s->context, PA_ERROR_PROTOCOL); - goto finish; - } - - 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->interpolate) { - struct timeval tv; - pa_operation_unref(pa_stream_get_latency_info(s, NULL, NULL)); - - pa_gettimeofday(&tv); - tv.tv_usec += LATENCY_IPOL_INTERVAL_USEC; /* every 100 ms */ - - assert(!s->ipol_event); - s->ipol_event = s->mainloop->time_new(s->mainloop, &tv, &ipol_callback, s); - } - - if (s->requested_bytes && s->ref > 1 && s->write_callback) - s->write_callback(s, s->requested_bytes, s->write_userdata); - -finish: - pa_stream_unref(s); -} - -static void create_stream(pa_stream *s, const char *dev, const pa_buffer_attr *attr, pa_stream_flags_t flags, const pa_cvolume *volume) { - pa_tagstruct *t; - uint32_t tag; - assert(s && s->ref >= 1 && s->state == PA_STREAM_DISCONNECTED); - - pa_stream_ref(s); - - s->interpolate = !!(flags & PA_STREAM_INTERPOLATE_LATENCY); - pa_stream_trash_ipol(s); - - 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; - } - - pa_stream_set_state(s, PA_STREAM_CREATING); - - t = pa_tagstruct_new(NULL, 0); - assert(t); - - if (!dev) { - if (s->direction == PA_STREAM_PLAYBACK) - dev = s->context->conf->default_sink; - else - dev = s->context->conf->default_source; - } - - pa_tagstruct_put(t, - PA_TAG_U32, s->direction == PA_STREAM_PLAYBACK ? PA_COMMAND_CREATE_PLAYBACK_STREAM : PA_COMMAND_CREATE_RECORD_STREAM, - PA_TAG_U32, tag = s->context->ctag++, - 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_INVALID); - - if (!volume) { - pa_cvolume_reset(&cv, s->sample_spec.channels); - volume = &cv; - } - - 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); - - pa_stream_unref(s); -} - -void pa_stream_connect_playback(pa_stream *s, const char *dev, const pa_buffer_attr *attr, pa_stream_flags_t flags, pa_cvolume *volume) { - assert(s && s->context->state == PA_CONTEXT_READY && s->ref >= 1); - s->direction = PA_STREAM_PLAYBACK; - create_stream(s, dev, attr, flags, volume); -} - -void pa_stream_connect_record(pa_stream *s, const char *dev, const pa_buffer_attr *attr, pa_stream_flags_t flags) { - assert(s && s->context->state == PA_CONTEXT_READY && s->ref >= 1); - s->direction = PA_STREAM_RECORD; - create_stream(s, dev, attr, flags, 0); -} - -void pa_stream_write(pa_stream *s, const void *data, size_t length, void (*free_cb)(void *p), size_t delta) { - pa_memchunk chunk; - assert(s && s->context && data && length && s->state == PA_STREAM_READY && s->ref >= 1); - - if (free_cb) { - chunk.memblock = pa_memblock_new_user((void*) data, length, free_cb, 1, s->context->memblock_stat); - assert(chunk.memblock && chunk.memblock->data); - } else { - chunk.memblock = pa_memblock_new(length, s->context->memblock_stat); - assert(chunk.memblock && chunk.memblock->data); - memcpy(chunk.memblock->data, data, length); - } - chunk.index = 0; - chunk.length = length; - - pa_pstream_send_memblock(s->context->pstream, s->channel, delta, &chunk); - pa_memblock_unref(chunk.memblock); - - if (length < s->requested_bytes) - s->requested_bytes -= length; - else - s->requested_bytes = 0; - - s->counter += length; -} - -size_t pa_stream_writable_size(pa_stream *s) { - assert(s && s->ref >= 1); - return s->state == PA_STREAM_READY ? s->requested_bytes : 0; -} - -pa_operation * pa_stream_drain(pa_stream *s, void (*cb) (pa_stream*s, int success, void *userdata), void *userdata) { - pa_operation *o; - pa_tagstruct *t; - uint32_t tag; - assert(s && s->ref >= 1 && s->state == PA_STREAM_READY); - - o = pa_operation_new(s->context, s); - assert(o); - o->callback = (pa_operation_callback) cb; - o->userdata = userdata; - - t = pa_tagstruct_new(NULL, 0); - assert(t); - pa_tagstruct_putu32(t, PA_COMMAND_DRAIN_PLAYBACK_STREAM); - pa_tagstruct_putu32(t, tag = s->context->ctag++); - 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, o); - - return pa_operation_ref(o); -} - -static void stream_get_latency_info_callback(pa_pdispatch *pd, uint32_t command, PA_GCC_UNUSED uint32_t tag, pa_tagstruct *t, void *userdata) { - pa_operation *o = userdata; - pa_latency_info i, *p = NULL; - struct timeval local, remote, now; - assert(pd && o && o->stream && o->context); - - 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.buffer_usec) < 0 || - 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_getu32(t, &i.queue_length) < 0 || - pa_tagstruct_get_timeval(t, &local) < 0 || - pa_tagstruct_get_timeval(t, &remote) < 0 || - pa_tagstruct_getu64(t, &i.counter) < 0 || - !pa_tagstruct_eof(t)) { - pa_context_fail(o->context, PA_ERROR_PROTOCOL); - goto finish; - } else { - pa_gettimeofday(&now); - - 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); - } - - if (o->stream->interpolate) { -/* pa_log("new interpol data\n"); */ - o->stream->ipol_timestamp = i.timestamp; - o->stream->ipol_usec = pa_stream_get_time(o->stream, &i); - o->stream->ipol_requested = 0; - } - - p = &i; - } - - if (o->callback) { - void (*cb)(pa_stream *s, const pa_latency_info *_i, void *_userdata) = (void (*)(pa_stream *s, const pa_latency_info *_i, void *_userdata)) o->callback; - cb(o->stream, p, o->userdata); - } - -finish: - pa_operation_done(o); - pa_operation_unref(o); -} - -pa_operation* pa_stream_get_latency_info(pa_stream *s, void (*cb)(pa_stream *p, const pa_latency_info*i, void *userdata), void *userdata) { - uint32_t tag; - pa_operation *o; - pa_tagstruct *t; - struct timeval now; - assert(s && s->direction != PA_STREAM_UPLOAD); - - o = pa_operation_new(s->context, s); - assert(o); - o->callback = (pa_operation_callback) cb; - o->userdata = userdata; - - t = pa_tagstruct_new(NULL, 0); - assert(t); - pa_tagstruct_putu32(t, s->direction == PA_STREAM_PLAYBACK ? PA_COMMAND_GET_PLAYBACK_LATENCY : PA_COMMAND_GET_RECORD_LATENCY); - pa_tagstruct_putu32(t, tag = s->context->ctag++); - pa_tagstruct_putu32(t, s->channel); - - pa_gettimeofday(&now); - pa_tagstruct_put_timeval(t, &now); - pa_tagstruct_putu64(t, s->counter); - - pa_pstream_send_tagstruct(s->context->pstream, t); - pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, stream_get_latency_info_callback, o); - - return pa_operation_ref(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 && s && 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_ERROR_PROTOCOL); - goto finish; - } - - pa_stream_set_state(s, PA_STREAM_TERMINATED); - -finish: - pa_stream_unref(s); -} - -void pa_stream_disconnect(pa_stream *s) { - pa_tagstruct *t; - uint32_t tag; - assert(s && s->ref >= 1); - - if (!s->channel_valid || !s->context->state == PA_CONTEXT_READY) - return; - - pa_stream_ref(s); - - t = pa_tagstruct_new(NULL, 0); - assert(t); - - pa_tagstruct_putu32(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)); - pa_tagstruct_putu32(t, tag = s->context->ctag++); - 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); - - pa_stream_unref(s); -} - -void pa_stream_set_read_callback(pa_stream *s, void (*cb)(pa_stream *p, const void*data, size_t length, void *userdata), void *userdata) { - assert(s && s->ref >= 1); - s->read_callback = cb; - s->read_userdata = userdata; -} - -void pa_stream_set_write_callback(pa_stream *s, void (*cb)(pa_stream *p, size_t length, void *userdata), void *userdata) { - assert(s && s->ref >= 1); - s->write_callback = cb; - s->write_userdata = userdata; -} - -void pa_stream_set_state_callback(pa_stream *s, void (*cb)(pa_stream *s, void *userdata), void *userdata) { - assert(s && s->ref >= 1); - s->state_callback = cb; - s->state_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 && o && o->context && o->ref >= 1); - - 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_ERROR_PROTOCOL); - goto finish; - } - - if (o->callback) { - void (*cb)(pa_stream *s, int _success, void *_userdata) = (void (*)(pa_stream *s, int _success, void *_userdata)) 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, void (*cb) (pa_stream*s, int success, void *userdata), void *userdata) { - pa_operation *o; - pa_tagstruct *t; - uint32_t tag; - assert(s && s->ref >= 1 && s->state == PA_STREAM_READY); - - if (s->interpolate) { - if (!s->corked && b) - /* Pausing */ - s->ipol_usec = pa_stream_get_interpolated_time(s); - else if (s->corked && !b) - /* Unpausing */ - pa_gettimeofday(&s->ipol_timestamp); - } - - s->corked = b; - - o = pa_operation_new(s->context, s); - assert(o); - o->callback = (pa_operation_callback) cb; - o->userdata = userdata; - - t = pa_tagstruct_new(NULL, 0); - assert(t); - pa_tagstruct_putu32(t, s->direction == PA_STREAM_PLAYBACK ? PA_COMMAND_CORK_PLAYBACK_STREAM : PA_COMMAND_CORK_RECORD_STREAM); - pa_tagstruct_putu32(t, tag = s->context->ctag++); - 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, o); - - pa_operation_unref(pa_stream_get_latency_info(s, NULL, NULL)); - - return pa_operation_ref(o); -} - -static pa_operation* stream_send_simple_command(pa_stream *s, uint32_t command, void (*cb)(pa_stream *s, int success, void *userdata), void *userdata) { - pa_tagstruct *t; - pa_operation *o; - uint32_t tag; - assert(s && s->ref >= 1 && s->state == PA_STREAM_READY); - - o = pa_operation_new(s->context, s); - o->callback = (pa_operation_callback) cb; - o->userdata = userdata; - - t = pa_tagstruct_new(NULL, 0); - pa_tagstruct_putu32(t, command); - pa_tagstruct_putu32(t, tag = s->context->ctag++); - 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, o); - - return pa_operation_ref(o); -} - -pa_operation* pa_stream_flush(pa_stream *s, void (*cb)(pa_stream *s, int success, void *userdata), void *userdata) { - pa_operation *o; - o = stream_send_simple_command(s, s->direction == PA_STREAM_PLAYBACK ? PA_COMMAND_FLUSH_PLAYBACK_STREAM : PA_COMMAND_FLUSH_RECORD_STREAM, cb, userdata); - pa_operation_unref(pa_stream_get_latency_info(s, NULL, NULL)); - return o; -} - -pa_operation* pa_stream_prebuf(pa_stream *s, void (*cb)(pa_stream *s, int success, void *userdata), void *userdata) { - pa_operation *o; - o = stream_send_simple_command(s, PA_COMMAND_PREBUF_PLAYBACK_STREAM, cb, userdata); - pa_operation_unref(pa_stream_get_latency_info(s, NULL, NULL)); - return o; -} - -pa_operation* pa_stream_trigger(pa_stream *s, void (*cb)(pa_stream *s, int success, void *userdata), void *userdata) { - pa_operation *o; - o = stream_send_simple_command(s, PA_COMMAND_TRIGGER_PLAYBACK_STREAM, cb, userdata); - pa_operation_unref(pa_stream_get_latency_info(s, NULL, NULL)); - return o; -} - -pa_operation* pa_stream_set_name(pa_stream *s, const char *name, void(*cb)(pa_stream*c, int success, void *userdata), void *userdata) { - pa_operation *o; - pa_tagstruct *t; - uint32_t tag; - assert(s && s->ref >= 1 && s->state == PA_STREAM_READY && name && s->direction != PA_STREAM_UPLOAD); - - o = pa_operation_new(s->context, s); - assert(o); - o->callback = (pa_operation_callback) cb; - o->userdata = userdata; - - t = pa_tagstruct_new(NULL, 0); - assert(t); - pa_tagstruct_putu32(t, s->direction == PA_STREAM_RECORD ? PA_COMMAND_SET_RECORD_STREAM_NAME : PA_COMMAND_SET_PLAYBACK_STREAM_NAME); - pa_tagstruct_putu32(t, tag = s->context->ctag++); - 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, o); - - return pa_operation_ref(o); -} - -uint64_t pa_stream_get_counter(pa_stream *s) { - assert(s); - return s->counter; -} - -pa_usec_t pa_stream_get_time(pa_stream *s, const pa_latency_info *i) { - pa_usec_t usec; - assert(s); - - usec = pa_bytes_to_usec(i->counter, &s->sample_spec); - - if (i) { - if (s->direction == PA_STREAM_PLAYBACK) { - pa_usec_t latency = i->transport_usec + i->buffer_usec + i->sink_usec; - if (usec < latency) - usec = 0; - else - usec -= latency; - - } else if (s->direction == PA_STREAM_RECORD) { - usec += i->source_usec + i->buffer_usec + i->transport_usec; - - if (usec > i->sink_usec) - usec -= i->sink_usec; - else - usec = 0; - } - } - - if (usec < s->previous_time) - usec = s->previous_time; - - s->previous_time = usec; - - return usec; -} - -static pa_usec_t time_counter_diff(pa_stream *s, pa_usec_t t, pa_usec_t c, int *negative) { - assert(s); - - if (negative) - *negative = 0; - - if (c < t) { - if (s->direction == PA_STREAM_RECORD) { - if (negative) - *negative = 1; - - return t-c; - } else - return 0; - } else - return c-t; -} - -pa_usec_t pa_stream_get_latency(pa_stream *s, const pa_latency_info *i, int *negative) { - pa_usec_t t, c; - assert(s && i); - - t = pa_stream_get_time(s, i); - c = pa_bytes_to_usec(s->counter, &s->sample_spec); - - return time_counter_diff(s, t, c, negative); -} - -const pa_sample_spec* pa_stream_get_sample_spec(pa_stream *s) { - assert(s); - return &s->sample_spec; -} - -void pa_stream_trash_ipol(pa_stream *s) { - assert(s); - - if (!s->interpolate) - return; - - memset(&s->ipol_timestamp, 0, sizeof(s->ipol_timestamp)); - s->ipol_usec = 0; -} - -pa_usec_t pa_stream_get_interpolated_time(pa_stream *s) { - pa_usec_t usec; - assert(s && s->interpolate); - - if (s->corked) - usec = s->ipol_usec; - else { - if (s->ipol_timestamp.tv_sec == 0) - usec = 0; - else - usec = s->ipol_usec + pa_timeval_age(&s->ipol_timestamp); - } - - if (usec < s->previous_ipol_time) - usec = s->previous_ipol_time; - - s->previous_ipol_time = usec; - - return usec; -} - -pa_usec_t pa_stream_get_interpolated_latency(pa_stream *s, int *negative) { - pa_usec_t t, c; - assert(s && s->interpolate); - - t = pa_stream_get_interpolated_time(s); - c = pa_bytes_to_usec(s->counter, &s->sample_spec); - return time_counter_diff(s, t, c, negative); -} |