mirrors/pulseaudio
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git synced 2025-10-29 05:40:23 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions
pulseaudio/src/pulsecore/sink-input.c

1202 lines
40 KiB
C
Raw Blame History

/***
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 of the License,
or (at your option) any later version.
PulseAudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <pulse/utf8.h>
#include <pulse/xmalloc.h>
#include <pulsecore/sample-util.h>
#include <pulsecore/core-subscribe.h>
#include <pulsecore/log.h>
#include <pulsecore/play-memblockq.h>
#include <pulsecore/namereg.h>
#include <pulsecore/core-util.h>
#include "sink-input.h"
#define MEMBLOCKQ_MAXLENGTH (32*1024*1024)
#define CONVERT_BUFFER_LENGTH (PA_PAGE_SIZE)
static PA_DEFINE_CHECK_TYPE(pa_sink_input, pa_msgobject);
static void sink_input_free(pa_object *o);
pa_sink_input_new_data* pa_sink_input_new_data_init(pa_sink_input_new_data *data) {
pa_assert(data);
memset(data, 0, sizeof(*data));
data->resample_method = PA_RESAMPLER_INVALID;
data->proplist = pa_proplist_new();
return data;
}
void pa_sink_input_new_data_set_sample_spec(pa_sink_input_new_data *data, const pa_sample_spec *spec) {
pa_assert(data);
if ((data->sample_spec_is_set = !!spec))
data->sample_spec = *spec;
}
void pa_sink_input_new_data_set_channel_map(pa_sink_input_new_data *data, const pa_channel_map *map) {
pa_assert(data);
if ((data->channel_map_is_set = !!map))
data->channel_map = *map;
}
void pa_sink_input_new_data_set_volume(pa_sink_input_new_data *data, const pa_cvolume *volume) {
pa_assert(data);
if ((data->volume_is_set = !!volume))
data->volume = *volume;
}
void pa_sink_input_new_data_set_muted(pa_sink_input_new_data *data, pa_bool_t mute) {
pa_assert(data);
data->muted_is_set = TRUE;
data->muted = !!mute;
}
void pa_sink_input_new_data_done(pa_sink_input_new_data *data) {
pa_assert(data);
pa_proplist_free(data->proplist);
}
/* Called from main context */
static void reset_callbacks(pa_sink_input *i) {
pa_assert(i);
i->pop = NULL;
i->process_rewind = NULL;
i->update_max_rewind = NULL;
i->update_max_request = NULL;
i->update_sink_requested_latency = NULL;
i->update_sink_latency_range = NULL;
i->attach = NULL;
i->detach = NULL;
i->suspend = NULL;
i->moved = NULL;
i->kill = NULL;
i->get_latency = NULL;
i->state_change = NULL;
}
/* Called from main context */
pa_sink_input* pa_sink_input_new(
pa_core *core,
pa_sink_input_new_data *data,
pa_sink_input_flags_t flags) {
pa_sink_input *i;
pa_resampler *resampler = NULL;
char st[PA_SAMPLE_SPEC_SNPRINT_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX];
pa_assert(core);
pa_assert(data);
if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SINK_INPUT_NEW], data) < 0)
return NULL;
pa_return_null_if_fail(!data->driver || pa_utf8_valid(data->driver));
if (!data->sink)
data->sink = pa_namereg_get(core, NULL, PA_NAMEREG_SINK, TRUE);
pa_return_null_if_fail(data->sink);
pa_return_null_if_fail(pa_sink_get_state(data->sink) != PA_SINK_UNLINKED);
pa_return_null_if_fail(!data->sync_base || (data->sync_base->sink == data->sink && pa_sink_input_get_state(data->sync_base) == PA_SINK_INPUT_CORKED));
if (!data->sample_spec_is_set)
data->sample_spec = data->sink->sample_spec;
pa_return_null_if_fail(pa_sample_spec_valid(&data->sample_spec));
if (!data->channel_map_is_set) {
if (data->sink->channel_map.channels == data->sample_spec.channels)
data->channel_map = data->sink->channel_map;
else
pa_return_null_if_fail(pa_channel_map_init_auto(&data->channel_map, data->sample_spec.channels, PA_CHANNEL_MAP_DEFAULT));
}
pa_return_null_if_fail(pa_channel_map_valid(&data->channel_map));
pa_return_null_if_fail(data->channel_map.channels == data->sample_spec.channels);
if (!data->volume_is_set)
pa_cvolume_reset(&data->volume, data->sample_spec.channels);
pa_return_null_if_fail(pa_cvolume_valid(&data->volume));
pa_return_null_if_fail(data->volume.channels == data->sample_spec.channels);
if (!data->muted_is_set)
data->muted = FALSE;
if (flags & PA_SINK_INPUT_FIX_FORMAT)
data->sample_spec.format = data->sink->sample_spec.format;
if (flags & PA_SINK_INPUT_FIX_RATE)
data->sample_spec.rate = data->sink->sample_spec.rate;
if (flags & PA_SINK_INPUT_FIX_CHANNELS) {
data->sample_spec.channels = data->sink->sample_spec.channels;
data->channel_map = data->sink->channel_map;
}
pa_assert(pa_sample_spec_valid(&data->sample_spec));
pa_assert(pa_channel_map_valid(&data->channel_map));
/* Due to the fixing of the sample spec the volume might not match anymore */
if (data->volume.channels != data->sample_spec.channels)
pa_cvolume_set(&data->volume, data->sample_spec.channels, pa_cvolume_avg(&data->volume));
if (data->resample_method == PA_RESAMPLER_INVALID)
data->resample_method = core->resample_method;
pa_return_null_if_fail(data->resample_method < PA_RESAMPLER_MAX);
if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SINK_INPUT_FIXATE], data) < 0)
return NULL;
if (pa_idxset_size(data->sink->inputs) >= PA_MAX_INPUTS_PER_SINK) {
pa_log_warn("Failed to create sink input: too many inputs per sink.");
return NULL;
}
if ((flags & PA_SINK_INPUT_VARIABLE_RATE) ||
!pa_sample_spec_equal(&data->sample_spec, &data->sink->sample_spec) ||
!pa_channel_map_equal(&data->channel_map, &data->sink->channel_map)) {
if (!(resampler = pa_resampler_new(
core->mempool,
&data->sample_spec, &data->channel_map,
&data->sink->sample_spec, &data->sink->channel_map,
data->resample_method,
((flags & PA_SINK_INPUT_VARIABLE_RATE) ? PA_RESAMPLER_VARIABLE_RATE : 0) |
((flags & PA_SINK_INPUT_NO_REMAP) ? PA_RESAMPLER_NO_REMAP : 0) |
(core->disable_remixing || (flags & PA_SINK_INPUT_NO_REMIX) ? PA_RESAMPLER_NO_REMIX : 0)))) {
pa_log_warn("Unsupported resampling operation.");
return NULL;
}
data->resample_method = pa_resampler_get_method(resampler);
}
i = pa_msgobject_new(pa_sink_input);
i->parent.parent.free = sink_input_free;
i->parent.process_msg = pa_sink_input_process_msg;
i->core = core;
i->state = PA_SINK_INPUT_INIT;
i->flags = flags;
i->proplist = pa_proplist_copy(data->proplist);
i->driver = pa_xstrdup(data->driver);
i->module = data->module;
i->sink = data->sink;
i->client = data->client;
i->resample_method = data->resample_method;
i->sample_spec = data->sample_spec;
i->channel_map = data->channel_map;
i->volume = data->volume;
i->muted = data->muted;
if (data->sync_base) {
i->sync_next = data->sync_base->sync_next;
i->sync_prev = data->sync_base;
if (data->sync_base->sync_next)
data->sync_base->sync_next->sync_prev = i;
data->sync_base->sync_next = i;
} else
i->sync_next = i->sync_prev = NULL;
i->direct_outputs = pa_idxset_new(NULL, NULL);
reset_callbacks(i);
i->userdata = NULL;
i->thread_info.state = i->state;
i->thread_info.attached = FALSE;
pa_atomic_store(&i->thread_info.drained, 1);
i->thread_info.sample_spec = i->sample_spec;
i->thread_info.resampler = resampler;
i->thread_info.volume = i->volume;
i->thread_info.muted = i->muted;
i->thread_info.requested_sink_latency = (pa_usec_t) -1;
i->thread_info.rewrite_nbytes = 0;
i->thread_info.rewrite_flush = FALSE;
i->thread_info.underrun_for = (uint64_t) -1;
i->thread_info.playing_for = 0;
i->thread_info.direct_outputs = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
i->thread_info.render_memblockq = pa_memblockq_new(
0,
MEMBLOCKQ_MAXLENGTH,
0,
pa_frame_size(&i->sink->sample_spec),
0,
1,
0,
&i->sink->silence);
pa_assert_se(pa_idxset_put(core->sink_inputs, pa_sink_input_ref(i), &i->index) == 0);
pa_assert_se(pa_idxset_put(i->sink->inputs, i, NULL) == 0);
pa_log_info("Created input %u \"%s\" on %s with sample spec %s and channel map %s",
i->index,
pa_strnull(pa_proplist_gets(i->proplist, PA_PROP_MEDIA_NAME)),
i->sink->name,
pa_sample_spec_snprint(st, sizeof(st), &i->sample_spec),
pa_channel_map_snprint(cm, sizeof(cm), &i->channel_map));
/* Don't forget to call pa_sink_input_put! */
return i;
}
/* Called from main context */
static void update_n_corked(pa_sink_input *i, pa_sink_input_state_t state) {
pa_assert(i);
if (i->state == PA_SINK_INPUT_CORKED && state != PA_SINK_INPUT_CORKED)
pa_assert_se(i->sink->n_corked -- >= 1);
else if (i->state != PA_SINK_INPUT_CORKED && state == PA_SINK_INPUT_CORKED)
i->sink->n_corked++;
pa_sink_update_status(i->sink);
}
/* Called from main context */
static int sink_input_set_state(pa_sink_input *i, pa_sink_input_state_t state) {
pa_sink_input *ssync;
pa_assert(i);
if (state == PA_SINK_INPUT_DRAINED)
state = PA_SINK_INPUT_RUNNING;
if (i->state == state)
return 0;
pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL) == 0);
update_n_corked(i, state);
i->state = state;
for (ssync = i->sync_prev; ssync; ssync = ssync->sync_prev) {
update_n_corked(ssync, state);
ssync->state = state;
}
for (ssync = i->sync_next; ssync; ssync = ssync->sync_next) {
update_n_corked(ssync, state);
ssync->state = state;
}
if (state != PA_SINK_INPUT_UNLINKED) {
pa_hook_fire(&i->sink->core->hooks[PA_CORE_HOOK_SINK_INPUT_STATE_CHANGED], i);
for (ssync = i->sync_prev; ssync; ssync = ssync->sync_prev)
pa_hook_fire(&i->sink->core->hooks[PA_CORE_HOOK_SINK_INPUT_STATE_CHANGED], ssync);
for (ssync = i->sync_next; ssync; ssync = ssync->sync_next)
pa_hook_fire(&i->sink->core->hooks[PA_CORE_HOOK_SINK_INPUT_STATE_CHANGED], ssync);
}
return 0;
}
/* Called from main context */
void pa_sink_input_unlink(pa_sink_input *i) {
pa_bool_t linked;
pa_source_output *o, *p = NULL;
pa_assert(i);
/* See pa_sink_unlink() for a couple of comments how this function
* works */
pa_sink_input_ref(i);
linked = PA_SINK_INPUT_IS_LINKED(i->state);
if (linked)
pa_hook_fire(&i->sink->core->hooks[PA_CORE_HOOK_SINK_INPUT_UNLINK], i);
if (i->sync_prev)
i->sync_prev->sync_next = i->sync_next;
if (i->sync_next)
i->sync_next->sync_prev = i->sync_prev;
i->sync_prev = i->sync_next = NULL;
pa_idxset_remove_by_data(i->sink->core->sink_inputs, i, NULL);
if (pa_idxset_remove_by_data(i->sink->inputs, i, NULL))
pa_sink_input_unref(i);
while ((o = pa_idxset_first(i->direct_outputs, NULL))) {
pa_assert(o != p);
pa_source_output_kill(o);
p = o;
}
update_n_corked(i, PA_SINK_INPUT_UNLINKED);
i->state = PA_SINK_INPUT_UNLINKED;
if (linked)
if (i->sink->asyncmsgq)
pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i->sink), PA_SINK_MESSAGE_REMOVE_INPUT, i, 0, NULL) == 0);
reset_callbacks(i);
if (linked) {
pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_REMOVE, i->index);
pa_hook_fire(&i->sink->core->hooks[PA_CORE_HOOK_SINK_INPUT_UNLINK_POST], i);
}
i->sink = NULL;
pa_sink_input_unref(i);
}
/* Called from main context */
static void sink_input_free(pa_object *o) {
pa_sink_input* i = PA_SINK_INPUT(o);
pa_assert(i);
pa_assert(pa_sink_input_refcnt(i) == 0);
if (PA_SINK_INPUT_IS_LINKED(i->state))
pa_sink_input_unlink(i);
pa_log_info("Freeing input %u \"%s\"", i->index, pa_strnull(pa_proplist_gets(i->proplist, PA_PROP_MEDIA_NAME)));
pa_assert(!i->thread_info.attached);
if (i->thread_info.render_memblockq)
pa_memblockq_free(i->thread_info.render_memblockq);
if (i->thread_info.resampler)
pa_resampler_free(i->thread_info.resampler);
if (i->proplist)
pa_proplist_free(i->proplist);
if (i->direct_outputs)
pa_idxset_free(i->direct_outputs, NULL, NULL);
if (i->thread_info.direct_outputs)
pa_hashmap_free(i->thread_info.direct_outputs, NULL, NULL);
pa_xfree(i->driver);
pa_xfree(i);
}
/* Called from main context */
void pa_sink_input_put(pa_sink_input *i) {
pa_sink_input_state_t state;
pa_sink_input_assert_ref(i);
pa_assert(i->state == PA_SINK_INPUT_INIT);
/* The following fields must be initialized properly */
pa_assert(i->pop);
pa_assert(i->process_rewind);
pa_assert(i->kill);
i->thread_info.volume = i->volume;
i->thread_info.muted = i->muted;
state = i->flags & PA_SINK_INPUT_START_CORKED ? PA_SINK_INPUT_CORKED : PA_SINK_INPUT_RUNNING;
update_n_corked(i, state);
i->state = state;
pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i->sink), PA_SINK_MESSAGE_ADD_INPUT, i, 0, NULL) == 0);
pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_NEW, i->index);
pa_hook_fire(&i->sink->core->hooks[PA_CORE_HOOK_SINK_INPUT_PUT], i);
}
/* Called from main context */
void pa_sink_input_kill(pa_sink_input*i) {
pa_sink_input_assert_ref(i);
pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
i->kill(i);
}
/* Called from main context */
pa_usec_t pa_sink_input_get_latency(pa_sink_input *i, pa_usec_t *sink_latency) {
pa_usec_t r[2] = { 0, 0 };
pa_sink_input_assert_ref(i);
pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_GET_LATENCY, r, 0, NULL) == 0);
if (i->get_latency)
r[0] += i->get_latency(i);
if (sink_latency)
*sink_latency = r[1];
return r[0];
}
/* Called from thread context */
int pa_sink_input_peek(pa_sink_input *i, size_t slength /* in sink frames */, pa_memchunk *chunk, pa_cvolume *volume) {
pa_bool_t do_volume_adj_here;
pa_bool_t volume_is_norm;
size_t block_size_max_sink, block_size_max_sink_input;
size_t ilength;
pa_sink_input_assert_ref(i);
pa_assert(PA_SINK_INPUT_IS_LINKED(i->thread_info.state));
pa_assert(pa_frame_aligned(slength, &i->sink->sample_spec));
pa_assert(chunk);
pa_assert(volume);
/* pa_log_debug("peek"); */
if (!i->pop)
return -1;
pa_assert(i->thread_info.state == PA_SINK_INPUT_RUNNING ||
i->thread_info.state == PA_SINK_INPUT_CORKED ||
i->thread_info.state == PA_SINK_INPUT_DRAINED);
/* If there's still some rewrite request the handle, but the sink
didn't do this for us, we do it here. However, since the sink
apparently doesn't support rewinding, we pass 0 here. This still
allows rewinding through the render buffer. */
pa_sink_input_process_rewind(i, 0);
block_size_max_sink_input = i->thread_info.resampler ?
pa_resampler_max_block_size(i->thread_info.resampler) :
pa_frame_align(pa_mempool_block_size_max(i->sink->core->mempool), &i->sample_spec);
block_size_max_sink = pa_frame_align(pa_mempool_block_size_max(i->sink->core->mempool), &i->sink->sample_spec);
/* Default buffer size */
if (slength <= 0)
slength = pa_frame_align(CONVERT_BUFFER_LENGTH, &i->sink->sample_spec);
if (slength > block_size_max_sink)
slength = block_size_max_sink;
if (i->thread_info.resampler) {
ilength = pa_resampler_request(i->thread_info.resampler, slength);
if (ilength <= 0)
ilength = pa_frame_align(CONVERT_BUFFER_LENGTH, &i->sample_spec);
} else
ilength = slength;
if (ilength > block_size_max_sink_input)
ilength = block_size_max_sink_input;
/* If the channel maps of the sink and this stream differ, we need
* to adjust the volume *before* we resample. Otherwise we can do
* it after and leave it for the sink code */
do_volume_adj_here = !pa_channel_map_equal(&i->channel_map, &i->sink->channel_map);
volume_is_norm = pa_cvolume_is_norm(&i->thread_info.volume) && !i->thread_info.muted;
while (!pa_memblockq_is_readable(i->thread_info.render_memblockq)) {
pa_memchunk tchunk;
/* There's nothing in our render queue. We need to fill it up
* with data from the implementor. */
if (i->thread_info.state == PA_SINK_INPUT_CORKED ||
i->pop(i, ilength, &tchunk) < 0) {
/* OK, we're corked or the implementor didn't give us any
* data, so let's just hand out silence */
pa_atomic_store(&i->thread_info.drained, 1);
pa_memblockq_seek(i->thread_info.render_memblockq, slength, PA_SEEK_RELATIVE);
i->thread_info.playing_for = 0;
if (i->thread_info.underrun_for != (uint64_t) -1)
i->thread_info.underrun_for += ilength;
break;
}
pa_atomic_store(&i->thread_info.drained, 0);
pa_assert(tchunk.length > 0);
pa_assert(tchunk.memblock);
i->thread_info.underrun_for = 0;
i->thread_info.playing_for += tchunk.length;
while (tchunk.length > 0) {
pa_memchunk wchunk;
wchunk = tchunk;
pa_memblock_ref(wchunk.memblock);
if (wchunk.length > block_size_max_sink_input)
wchunk.length = block_size_max_sink_input;
/* It might be necessary to adjust the volume here */
if (do_volume_adj_here && !volume_is_norm) {
pa_memchunk_make_writable(&wchunk, 0);
if (i->thread_info.muted)
pa_silence_memchunk(&wchunk, &i->thread_info.sample_spec);
else
pa_volume_memchunk(&wchunk, &i->thread_info.sample_spec, &i->thread_info.volume);
}
if (!i->thread_info.resampler)
pa_memblockq_push_align(i->thread_info.render_memblockq, &wchunk);
else {
pa_memchunk rchunk;
pa_resampler_run(i->thread_info.resampler, &wchunk, &rchunk);
/* pa_log_debug("pushing %lu", (unsigned long) rchunk.length); */
if (rchunk.memblock) {
pa_memblockq_push_align(i->thread_info.render_memblockq, &rchunk);
pa_memblock_unref(rchunk.memblock);
}
}
pa_memblock_unref(wchunk.memblock);
tchunk.index += wchunk.length;
tchunk.length -= wchunk.length;
}
pa_memblock_unref(tchunk.memblock);
}
pa_assert_se(pa_memblockq_peek(i->thread_info.render_memblockq, chunk) >= 0);
pa_assert(chunk->length > 0);
pa_assert(chunk->memblock);
/* pa_log_debug("peeking %lu", (unsigned long) chunk->length); */
if (chunk->length > block_size_max_sink)
chunk->length = block_size_max_sink;
/* Let's see if we had to apply the volume adjustment ourselves,
* or if this can be done by the sink for us */
if (do_volume_adj_here)
/* We had different channel maps, so we already did the adjustment */
pa_cvolume_reset(volume, i->sink->sample_spec.channels);
else if (i->thread_info.muted)
/* We've both the same channel map, so let's have the sink do the adjustment for us*/
pa_cvolume_mute(volume, i->sink->sample_spec.channels);
else
*volume = i->thread_info.volume;
return 0;
}
/* Called from thread context */
void pa_sink_input_drop(pa_sink_input *i, size_t nbytes /* in sink sample spec */) {
pa_sink_input_assert_ref(i);
pa_assert(PA_SINK_INPUT_IS_LINKED(i->thread_info.state));
pa_assert(pa_frame_aligned(nbytes, &i->sink->sample_spec));
pa_assert(nbytes > 0);
/* pa_log_debug("dropping %lu", (unsigned long) nbytes); */
/* If there's still some rewrite request the handle, but the sink
didn't do this for us, we do it here. However, since the sink
apparently doesn't support rewinding, we pass 0 here. This still
allows rewinding through the render buffer. */
pa_sink_input_process_rewind(i, 0);
pa_memblockq_drop(i->thread_info.render_memblockq, nbytes);
}
/* Called from thread context */
void pa_sink_input_process_rewind(pa_sink_input *i, size_t nbytes /* in sink sample spec */) {
size_t lbq;
pa_sink_input_assert_ref(i);
pa_assert(PA_SINK_INPUT_IS_LINKED(i->thread_info.state));
pa_assert(pa_frame_aligned(nbytes, &i->sink->sample_spec));
/* pa_log_debug("rewind(%lu, %lu)", (unsigned long) nbytes, (unsigned long) i->thread_info.rewrite_nbytes); */
lbq = pa_memblockq_get_length(i->thread_info.render_memblockq);
if (nbytes > 0) {
pa_log_debug("Have to rewind %lu bytes on render memblockq.", (unsigned long) nbytes);
pa_memblockq_rewind(i->thread_info.render_memblockq, nbytes);
}
if (i->thread_info.rewrite_nbytes == (size_t) -1) {
/* We were asked to drop all buffered data, and rerequest new
* data from implementor the next time push() is called */
pa_memblockq_flush(i->thread_info.render_memblockq);
} else if (i->thread_info.rewrite_nbytes > 0) {
size_t max_rewrite, amount;
/* Calculate how much make sense to rewrite at most */
max_rewrite = nbytes + lbq;
/* Transform into local domain */
if (i->thread_info.resampler)
max_rewrite = pa_resampler_request(i->thread_info.resampler, max_rewrite);
/* Calculate how much of the rewinded data should actually be rewritten */
amount = PA_MIN(i->thread_info.rewrite_nbytes, max_rewrite);
if (amount > 0) {
pa_log_debug("Have to rewind %lu bytes on implementor.", (unsigned long) amount);
/* Tell the implementor */
if (i->process_rewind)
i->process_rewind(i, amount);
/* Convert back to to sink domain */
if (i->thread_info.resampler)
amount = pa_resampler_result(i->thread_info.resampler, amount);
if (amount > 0)
/* Ok, now update the write pointer */
pa_memblockq_seek(i->thread_info.render_memblockq, - ((int64_t) amount), PA_SEEK_RELATIVE);
if (i->thread_info.rewrite_flush)
pa_memblockq_silence(i->thread_info.render_memblockq);
/* And reset the resampler */
if (i->thread_info.resampler)
pa_resampler_reset(i->thread_info.resampler);
}
}
i->thread_info.rewrite_nbytes = 0;
i->thread_info.rewrite_flush = FALSE;
}
/* Called from thread context */
void pa_sink_input_update_max_rewind(pa_sink_input *i, size_t nbytes /* in the sink's sample spec */) {
pa_sink_input_assert_ref(i);
pa_assert(PA_SINK_INPUT_IS_LINKED(i->thread_info.state));
pa_assert(pa_frame_aligned(nbytes, &i->sink->sample_spec));
pa_memblockq_set_maxrewind(i->thread_info.render_memblockq, nbytes);
if (i->update_max_rewind)
i->update_max_rewind(i, i->thread_info.resampler ? pa_resampler_request(i->thread_info.resampler, nbytes) : nbytes);
}
/* Called from thread context */
void pa_sink_input_update_max_request(pa_sink_input *i, size_t nbytes /* in the sink's sample spec */) {
pa_sink_input_assert_ref(i);
pa_assert(PA_SINK_INPUT_IS_LINKED(i->thread_info.state));
pa_assert(pa_frame_aligned(nbytes, &i->sink->sample_spec));
if (i->update_max_request)
i->update_max_request(i, i->thread_info.resampler ? pa_resampler_request(i->thread_info.resampler, nbytes) : nbytes);
}
/* Called from thread context */
static pa_usec_t fixup_latency(pa_sink *s, pa_usec_t usec) {
pa_sink_assert_ref(s);
if (usec == (pa_usec_t) -1)
return usec;
if (s->thread_info.max_latency > 0 && usec > s->thread_info.max_latency)
usec = s->thread_info.max_latency;
if (s->thread_info.min_latency > 0 && usec < s->thread_info.min_latency)
usec = s->thread_info.min_latency;
return usec;
}
/* Called from thread context */
pa_usec_t pa_sink_input_set_requested_latency_within_thread(pa_sink_input *i, pa_usec_t usec) {
pa_sink_input_assert_ref(i);
usec = fixup_latency(i->sink, usec);
i->thread_info.requested_sink_latency = usec;
pa_sink_invalidate_requested_latency(i->sink);
return usec;
}
/* Called from main context */
pa_usec_t pa_sink_input_set_requested_latency(pa_sink_input *i, pa_usec_t usec) {
pa_sink_input_assert_ref(i);
if (PA_SINK_INPUT_IS_LINKED(i->state))
pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_SET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
else {
/* If this sink input is not realized yet, we have to touch
* the thread info data directly */
usec = fixup_latency(i->sink, usec);
i->thread_info.requested_sink_latency = usec;
i->sink->thread_info.requested_latency_valid = FALSE;
}
return usec;
}
/* Called from main context */
pa_usec_t pa_sink_input_get_requested_latency(pa_sink_input *i) {
pa_usec_t usec = 0;
pa_sink_input_assert_ref(i);
if (PA_SINK_INPUT_IS_LINKED(i->state))
pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
else
/* If this sink input is not realized yet, we have to touch
* the thread info data directly */
usec = i->thread_info.requested_sink_latency;
return usec;
}
/* Called from main context */
void pa_sink_input_set_volume(pa_sink_input *i, const pa_cvolume *volume) {
pa_sink_input_assert_ref(i);
pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
pa_assert(volume);
if (pa_cvolume_equal(&i->volume, volume))
return;
i->volume = *volume;
pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_SET_VOLUME, &i->volume, 0, NULL) == 0);
pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
}
/* Called from main context */
const pa_cvolume *pa_sink_input_get_volume(pa_sink_input *i) {
pa_sink_input_assert_ref(i);
pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
return &i->volume;
}
/* Called from main context */
void pa_sink_input_set_mute(pa_sink_input *i, pa_bool_t mute) {
pa_assert(i);
pa_sink_input_assert_ref(i);
pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
if (!i->muted == !mute)
return;
i->muted = mute;
pa_asyncmsgq_post(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_SET_MUTE, PA_UINT_TO_PTR(mute), 0, NULL, NULL);
pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
}
/* Called from main context */
pa_bool_t pa_sink_input_get_mute(pa_sink_input *i) {
pa_sink_input_assert_ref(i);
pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
return i->muted;
}
/* Called from main context */
void pa_sink_input_cork(pa_sink_input *i, pa_bool_t b) {
pa_sink_input_assert_ref(i);
pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
sink_input_set_state(i, b ? PA_SINK_INPUT_CORKED : PA_SINK_INPUT_RUNNING);
}
/* Called from main context */
int pa_sink_input_set_rate(pa_sink_input *i, uint32_t rate) {
pa_sink_input_assert_ref(i);
pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
pa_return_val_if_fail(i->thread_info.resampler, -1);
if (i->sample_spec.rate == rate)
return 0;
i->sample_spec.rate = rate;
pa_asyncmsgq_post(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_SET_RATE, PA_UINT_TO_PTR(rate), 0, NULL, NULL);
pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
return 0;
}
/* Called from main context */
void pa_sink_input_set_name(pa_sink_input *i, const char *name) {
const char *old;
pa_sink_input_assert_ref(i);
if (!name && !pa_proplist_contains(i->proplist, PA_PROP_MEDIA_NAME))
return;
old = pa_proplist_gets(i->proplist, PA_PROP_MEDIA_NAME);
if (old && name && !strcmp(old, name))
return;
if (name)
pa_proplist_sets(i->proplist, PA_PROP_MEDIA_NAME, name);
else
pa_proplist_unset(i->proplist, PA_PROP_MEDIA_NAME);
if (PA_SINK_INPUT_IS_LINKED(i->state)) {
pa_hook_fire(&i->sink->core->hooks[PA_CORE_HOOK_SINK_INPUT_PROPLIST_CHANGED], i);
pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
}
}
/* Called from main context */
pa_resample_method_t pa_sink_input_get_resample_method(pa_sink_input *i) {
pa_sink_input_assert_ref(i);
return i->resample_method;
}
/* Called from main context */
int pa_sink_input_move_to(pa_sink_input *i, pa_sink *dest) {
pa_resampler *new_resampler;
pa_sink *origin;
pa_sink_input_move_hook_data hook_data;
pa_source_output *o, *p = NULL;
pa_sink_input_assert_ref(i);
pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
pa_sink_assert_ref(dest);
origin = i->sink;
if (dest == origin)
return 0;
if (i->flags & PA_SINK_INPUT_DONT_MOVE)
return -1;
if (i->sync_next || i->sync_prev) {
pa_log_warn("Moving synchronised streams not supported.");
return -1;
}
if (pa_idxset_size(dest->inputs) >= PA_MAX_INPUTS_PER_SINK) {
pa_log_warn("Failed to move sink input: too many inputs per sink.");
return -1;
}
/* Kill directly connected outputs */
while ((o = pa_idxset_first(i->direct_outputs, NULL))) {
pa_assert(o != p);
pa_source_output_kill(o);
p = o;
}
if (i->thread_info.resampler &&
pa_sample_spec_equal(&origin->sample_spec, &dest->sample_spec) &&
pa_channel_map_equal(&origin->channel_map, &dest->channel_map))
/* Try to reuse the old resampler if possible */
new_resampler = i->thread_info.resampler;
else if ((i->flags & PA_SINK_INPUT_VARIABLE_RATE) ||
!pa_sample_spec_equal(&i->sample_spec, &dest->sample_spec) ||
!pa_channel_map_equal(&i->channel_map, &dest->channel_map)) {
/* Okey, we need a new resampler for the new sink */
if (!(new_resampler = pa_resampler_new(
dest->core->mempool,
&i->sample_spec, &i->channel_map,
&dest->sample_spec, &dest->channel_map,
i->resample_method,
((i->flags & PA_SINK_INPUT_VARIABLE_RATE) ? PA_RESAMPLER_VARIABLE_RATE : 0) |
((i->flags & PA_SINK_INPUT_NO_REMAP) ? PA_RESAMPLER_NO_REMAP : 0) |
(i->core->disable_remixing || (i->flags & PA_SINK_INPUT_NO_REMIX) ? PA_RESAMPLER_NO_REMIX : 0)))) {
pa_log_warn("Unsupported resampling operation.");
return -1;
}
} else
new_resampler = NULL;
hook_data.sink_input = i;
hook_data.destination = dest;
pa_hook_fire(&i->sink->core->hooks[PA_CORE_HOOK_SINK_INPUT_MOVE], &hook_data);
pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i->sink), PA_SINK_MESSAGE_START_MOVE, i, 0, NULL) == 0);
pa_idxset_remove_by_data(origin->inputs, i, NULL);
pa_idxset_put(dest->inputs, i, NULL);
i->sink = dest;
if (pa_sink_input_get_state(i) == PA_SINK_INPUT_CORKED) {
pa_assert_se(origin->n_corked-- >= 1);
dest->n_corked++;
}
/* Replace resampler and render queue */
if (new_resampler != i->thread_info.resampler) {
if (i->thread_info.resampler)
pa_resampler_free(i->thread_info.resampler);
i->thread_info.resampler = new_resampler;
pa_memblockq_free(i->thread_info.render_memblockq);
i->thread_info.render_memblockq = pa_memblockq_new(
0,
MEMBLOCKQ_MAXLENGTH,
0,
pa_frame_size(&i->sink->sample_spec),
0,
1,
0,
&i->sink->silence);
}
pa_sink_update_status(origin);
pa_sink_update_status(dest);
pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i->sink), PA_SINK_MESSAGE_FINISH_MOVE, i, 0, NULL) == 0);
if (i->moved)
i->moved(i);
pa_hook_fire(&i->sink->core->hooks[PA_CORE_HOOK_SINK_INPUT_MOVE_POST], i);
pa_log_debug("Successfully moved sink input %i from %s to %s.", i->index, origin->name, dest->name);
/* Notify everyone */
pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
return 0;
}
/* Called from IO thread context */
void pa_sink_input_set_state_within_thread(pa_sink_input *i, pa_sink_input_state_t state) {
pa_sink_input_assert_ref(i);
if (state == i->thread_info.state)
return;
if ((state == PA_SINK_INPUT_DRAINED || state == PA_SINK_INPUT_RUNNING) &&
!(i->thread_info.state == PA_SINK_INPUT_DRAINED || i->thread_info.state != PA_SINK_INPUT_RUNNING))
pa_atomic_store(&i->thread_info.drained, 1);
if (state == PA_SINK_INPUT_CORKED && i->thread_info.state != PA_SINK_INPUT_CORKED) {
/* This will tell the implementing sink input driver to rewind
* so that the unplayed already mixed data is not lost */
pa_sink_input_request_rewind(i, 0, TRUE, TRUE);
} else if (i->thread_info.state == PA_SINK_INPUT_CORKED && state != PA_SINK_INPUT_CORKED) {
/* OK, we're being uncorked. Make sure we're not rewound when
* the hw buffer is remixed and request a remix. */
pa_sink_input_request_rewind(i, 0, FALSE, TRUE);
}
if (i->state_change)
i->state_change(i, state);
i->thread_info.state = state;
}
/* Called from thread context, except when it is not. */
int pa_sink_input_process_msg(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
pa_sink_input *i = PA_SINK_INPUT(o);
pa_sink_input_assert_ref(i);
switch (code) {
case PA_SINK_INPUT_MESSAGE_SET_VOLUME:
i->thread_info.volume = *((pa_cvolume*) userdata);
pa_sink_input_request_rewind(i, 0, TRUE, FALSE);
return 0;
case PA_SINK_INPUT_MESSAGE_SET_MUTE:
i->thread_info.muted = PA_PTR_TO_UINT(userdata);
pa_sink_input_request_rewind(i, 0, TRUE, FALSE);
return 0;
case PA_SINK_INPUT_MESSAGE_GET_LATENCY: {
pa_usec_t *r = userdata;
pa_usec_t sink_usec = 0;
r[0] += pa_bytes_to_usec(pa_memblockq_get_length(i->thread_info.render_memblockq), &i->sink->sample_spec);
if (i->sink->parent.process_msg(PA_MSGOBJECT(i->sink), PA_SINK_MESSAGE_GET_LATENCY, &sink_usec, 0, NULL) >= 0)
r[1] += sink_usec;
return 0;
}
case PA_SINK_INPUT_MESSAGE_SET_RATE:
i->thread_info.sample_spec.rate = PA_PTR_TO_UINT(userdata);
pa_resampler_set_input_rate(i->thread_info.resampler, PA_PTR_TO_UINT(userdata));
return 0;
case PA_SINK_INPUT_MESSAGE_SET_STATE: {
pa_sink_input *ssync;
pa_sink_input_set_state_within_thread(i, PA_PTR_TO_UINT(userdata));
for (ssync = i->thread_info.sync_prev; ssync; ssync = ssync->thread_info.sync_prev)
pa_sink_input_set_state_within_thread(ssync, PA_PTR_TO_UINT(userdata));
for (ssync = i->thread_info.sync_next; ssync; ssync = ssync->thread_info.sync_next)
pa_sink_input_set_state_within_thread(ssync, PA_PTR_TO_UINT(userdata));
return 0;
}
case PA_SINK_INPUT_MESSAGE_SET_REQUESTED_LATENCY: {
pa_usec_t *usec = userdata;
*usec = pa_sink_input_set_requested_latency_within_thread(i, *usec);
return 0;
}
case PA_SINK_INPUT_MESSAGE_GET_REQUESTED_LATENCY: {
pa_usec_t *r = userdata;
*r = i->thread_info.requested_sink_latency;
return 0;
}
}
return -1;
}
/* Called from main thread */
pa_sink_input_state_t pa_sink_input_get_state(pa_sink_input *i) {
pa_sink_input_assert_ref(i);
if (i->state == PA_SINK_INPUT_RUNNING || i->state == PA_SINK_INPUT_DRAINED)
return pa_atomic_load(&i->thread_info.drained) ? PA_SINK_INPUT_DRAINED : PA_SINK_INPUT_RUNNING;
return i->state;
}
/* Called from IO context */
pa_bool_t pa_sink_input_safe_to_remove(pa_sink_input *i) {
pa_sink_input_assert_ref(i);
if (PA_SINK_INPUT_IS_LINKED(i->thread_info.state))
return pa_memblockq_is_empty(i->thread_info.render_memblockq);
return TRUE;
}
/* Called from IO context */
void pa_sink_input_request_rewind(pa_sink_input *i, size_t nbytes /* in our sample spec */, pa_bool_t rewrite, pa_bool_t flush) {
size_t lbq;
/* If 'rewrite' is TRUE the sink is rewound as far as requested
* and possible and the exact value of this is passed back the
* implementor via process_rewind(). If 'flush' is also TRUE all
* already rendered data is also dropped.
*
* If 'rewrite' is FALSE the sink is rewound as far as requested
* and possible and the already rendered data is dropped so that
* in the next iteration we read new data from the
* implementor. This implies 'flush' is TRUE. */
pa_sink_input_assert_ref(i);
pa_assert(i->thread_info.rewrite_nbytes == 0);
/* We don't take rewind requests while we are corked */
if (i->thread_info.state == PA_SINK_INPUT_CORKED)
return;
pa_assert(rewrite || flush);
/* Calculate how much we can rewind locally without having to
* touch the sink */
if (rewrite)
lbq = pa_memblockq_get_length(i->thread_info.render_memblockq);
else
lbq = 0;
/* Check if rewinding for the maximum is requested, and if so, fix up */
if (nbytes <= 0) {
/* Calculate maximum number of bytes that could be rewound in theory */
nbytes = i->sink->thread_info.max_rewind + lbq;
/* Transform from sink domain */
if (i->thread_info.resampler)
nbytes = pa_resampler_request(i->thread_info.resampler, nbytes);
}
if (rewrite) {
/* Make sure to not overwrite over underruns */
if (nbytes > i->thread_info.playing_for)
nbytes = (size_t) i->thread_info.playing_for;
i->thread_info.rewrite_nbytes = nbytes;
} else
i->thread_info.rewrite_nbytes = (size_t) -1;
i->thread_info.rewrite_flush = flush && i->thread_info.rewrite_nbytes != 0;
/* Transform to sink domain */
if (i->thread_info.resampler)
nbytes = pa_resampler_result(i->thread_info.resampler, nbytes);
if (nbytes > lbq)
pa_sink_request_rewind(i->sink, nbytes - lbq);
}
/* Called from main context */
pa_memchunk* pa_sink_input_get_silence(pa_sink_input *i, pa_memchunk *ret) {
pa_sink_input_assert_ref(i);
pa_assert(ret);
pa_silence_memchunk_get(
&i->sink->core->silence_cache,
i->sink->core->mempool,
ret,
&i->sample_spec,
i->thread_info.resampler ? pa_resampler_max_block_size(i->thread_info.resampler) : 0);
return ret;
}
Reference in a new issue View git blame Copy permalink