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author | Lennart Poettering <lennart@poettering.net> | 2004-09-14 17:52:11 +0000 |
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committer | Lennart Poettering <lennart@poettering.net> | 2004-09-14 17:52:11 +0000 |
commit | 8c6593dabf3253e20fead143855267570a403c9a (patch) | |
tree | 46ab7f2f77375113d2e8f0461a512688b0aa8857 /polyp/module-combine.c | |
parent | 829656c5fcd7169e4c2f86f4ad5098ea9aaa5643 (diff) |
add module-combine
remove option "stay-root"
clean up pa_conf
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@199 fefdeb5f-60dc-0310-8127-8f9354f1896f
Diffstat (limited to 'polyp/module-combine.c')
-rw-r--r-- | polyp/module-combine.c | 353 |
1 files changed, 353 insertions, 0 deletions
diff --git a/polyp/module-combine.c b/polyp/module-combine.c new file mode 100644 index 00000000..0ab9d9ec --- /dev/null +++ b/polyp/module-combine.c @@ -0,0 +1,353 @@ +/* $Id$ */ + +/*** + This file is part of polypaudio. + + polypaudio is free software; you can redistribute it and/or modify + it under the terms of the GNU 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 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 <stdio.h> + +#include "module.h" +#include "llist.h" +#include "sink.h" +#include "sink-input.h" +#include "memblockq.h" +#include "log.h" +#include "util.h" +#include "xmalloc.h" +#include "modargs.h" +#include "namereg.h" + +PA_MODULE_AUTHOR("Lennart Poettering") +PA_MODULE_DESCRIPTION("Makes one playback device out of many") +PA_MODULE_VERSION(PACKAGE_VERSION) +PA_MODULE_USAGE("sink_name=<name for the sink> master=<master sink> slave=<slave sinks>") + +#define DEFAULT_SINK_NAME "combine" +#define MEMBLOCKQ_MAXLENGTH (1024*170) +#define RENDER_SIZE (1024*10) + +#define ADJUST_TIME 5 + +static const char* const valid_modargs[] = { + "sink_name", + "master", + "slaves", + NULL +}; + +struct output { + struct userdata *userdata; + struct pa_sink_input *sink_input; + size_t counter; + struct pa_memblockq *memblockq; + pa_usec_t sink_latency; + PA_LLIST_FIELDS(struct output); +}; + +struct userdata { + struct pa_module *module; + struct pa_core *core; + struct pa_sink *sink; + unsigned n_outputs; + struct output *master; + struct pa_time_event *time_event; + + PA_LLIST_HEAD(struct output, outputs); +}; + +static void output_free(struct output *o); +static void clear_up(struct userdata *u); + +static void adjust_rates(struct userdata *u) { + struct output *o; + pa_usec_t max = 0; + uint32_t base_rate; + assert(u && u->sink); + + for (o = u->outputs; o; o = o->next) { + o->sink_latency = pa_sink_get_latency(o->sink_input->sink); + + if (o->sink_latency > max) + max = o->sink_latency; + } + + pa_log(__FILE__": [%s] maximum latency is %0.0f usec.\n", u->sink->name, (float) max); + + base_rate = u->sink->sample_spec.rate; + + for (o = u->outputs; o; o = o->next) { + pa_usec_t l; + uint32_t r = base_rate; + + l = o->sink_latency + pa_sink_input_get_latency(o->sink_input); + + if (l < max) + r -= (uint32_t) (((((double) max-l))/ADJUST_TIME)*r/ 1000000); + else if (l > max) + r += (uint32_t) (((((double) l-max))/ADJUST_TIME)*r/ 1000000); + + if (r < (uint32_t) (base_rate*0.9) || r > (uint32_t) (base_rate*1.1)) + pa_log(__FILE__": [%s] sample rates too different, not adjusting (%u vs. %u).\n", o->sink_input->name, base_rate, r); + else + pa_log(__FILE__": [%s] new rate is %u Hz; ratio is %0.3f; latency is %0.0f usec.\n", o->sink_input->name, r, (double) r / base_rate, (float) l); + + pa_sink_input_set_rate(o->sink_input, r); + } +} + +static void request_memblock(struct userdata *u) { + struct pa_memchunk chunk; + struct output *o; + assert(u && u->sink); + + if (pa_sink_render(u->sink, RENDER_SIZE, &chunk) < 0) + return; + + for (o = u->outputs; o; o = o->next) + pa_memblockq_push_align(o->memblockq, &chunk, 0); + + pa_memblock_unref(chunk.memblock); +} + +static void time_callback(struct pa_mainloop_api*a, struct pa_time_event* e, const struct timeval *tv, void *userdata) { + struct userdata *u = userdata; + struct timeval n; + assert(u && a && u->time_event == e); + + adjust_rates(u); + + gettimeofday(&n, NULL); + n.tv_sec += ADJUST_TIME; + u->sink->core->mainloop->time_restart(e, &n); +} + +static int sink_input_peek_cb(struct pa_sink_input *i, struct pa_memchunk *chunk) { + struct output *o = i->userdata; + assert(i && o && o->sink_input && chunk); + + if (pa_memblockq_peek(o->memblockq, chunk) >= 0) + return 0; + + /* Try harder */ + request_memblock(o->userdata); + + return pa_memblockq_peek(o->memblockq, chunk); +} + +static void sink_input_drop_cb(struct pa_sink_input *i, const struct pa_memchunk *chunk, size_t length) { + struct output *o = i->userdata; + assert(i && o && o->sink_input && chunk && length); + + pa_memblockq_drop(o->memblockq, chunk, length); + o->counter += length; +} + +static void sink_input_kill_cb(struct pa_sink_input *i) { + struct output *o = i->userdata; + assert(i && o && o->sink_input); + clear_up(o->userdata); +} + +static pa_usec_t sink_input_get_latency_cb(struct pa_sink_input *i) { + struct output *o = i->userdata; + assert(i && o && o->sink_input); + + return pa_bytes_to_usec(pa_memblockq_get_length(o->memblockq), &i->sample_spec); +} + +static pa_usec_t sink_get_latency_cb(struct pa_sink *s) { + struct userdata *u = s->userdata; + assert(s && u && u->sink && u->master); + + return pa_sink_input_get_latency(u->master->sink_input); +} + +static struct output *output_new(struct userdata *u, struct pa_sink *sink) { + struct output *o = NULL; + char t[256]; + assert(u && sink && u->sink); + + o = pa_xmalloc(sizeof(struct output)); + o->userdata = u; + + o->counter = 0; + o->memblockq = pa_memblockq_new(MEMBLOCKQ_MAXLENGTH, MEMBLOCKQ_MAXLENGTH, pa_frame_size(&u->sink->sample_spec), 0, 0, sink->core->memblock_stat); + + snprintf(t, sizeof(t), "%s: output #%u", u->sink->name, u->n_outputs+1); + if (!(o->sink_input = pa_sink_input_new(sink, t, &u->sink->sample_spec, 1))) + goto fail; + + o->sink_input->get_latency = sink_input_get_latency_cb; + o->sink_input->peek = sink_input_peek_cb; + o->sink_input->drop = sink_input_drop_cb; + o->sink_input->kill = sink_input_kill_cb; + o->sink_input->userdata = o; + o->sink_input->owner = u->module; + + PA_LLIST_PREPEND(struct output, u->outputs, o); + u->n_outputs++; + return o; + +fail: + + if (o) { + if (o->sink_input) + pa_sink_input_free(o->sink_input); + + if (o->memblockq) + pa_memblockq_free(o->memblockq); + + pa_xfree(o); + } + + return NULL; +} + +static void output_free(struct output *o) { + assert(o); + PA_LLIST_REMOVE(struct output, o->userdata->outputs, o); + o->userdata->n_outputs--; + pa_memblockq_free(o->memblockq); + pa_sink_input_free(o->sink_input); + pa_xfree(o); +} + +static void clear_up(struct userdata *u) { + struct output *o; + assert(u); + + if (u->time_event) { + u->core->mainloop->time_free(u->time_event); + u->time_event = NULL; + } + + while ((o = u->outputs)) + output_free(o); + + u->master = NULL; + + if (u->sink) { + pa_sink_free(u->sink); + u->sink = NULL; + } +} + +int pa__init(struct pa_core *c, struct pa_module*m) { + struct userdata *u; + struct pa_modargs *ma = NULL; + const char *master_name, *slaves; + struct pa_sink *master_sink; + char *n = NULL; + const char*split_state; + struct timeval tv; + assert(c && m); + + if (!(ma = pa_modargs_new(m->argument, valid_modargs))) { + pa_log(__FILE__": failed to parse module arguments\n"); + goto fail; + } + + u = pa_xmalloc(sizeof(struct userdata)); + m->userdata = u; + u->sink = NULL; + u->n_outputs = 0; + u->master = NULL; + u->module = m; + u->core = c; + u->time_event = NULL; + PA_LLIST_HEAD_INIT(struct output, u->outputs); + + if (!(master_name = pa_modargs_get_value(ma, "master", NULL)) || !(slaves = pa_modargs_get_value(ma, "slaves", NULL))) { + pa_log(__FILE__": no master or slave sinks specified\n"); + goto fail; + } + + if (!(master_sink = pa_namereg_get(c, master_name, PA_NAMEREG_SINK, 1))) { + pa_log(__FILE__": invalid master sink '%s'\n", master_name); + goto fail; + } + + if (!(u->sink = pa_sink_new(c, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME), 0, &master_sink->sample_spec))) { + pa_log(__FILE__": failed to create sink\n"); + goto fail; + } + + pa_sink_set_owner(u->sink, m); + u->sink->description = pa_sprintf_malloc("Combined sink"); + u->sink->get_latency = sink_get_latency_cb; + u->sink->userdata = u; + + if (!(u->master = output_new(u, master_sink))) { + pa_log(__FILE__": failed to create master sink input on sink '%s'.\n", u->sink->name); + goto fail; + } + + split_state = NULL; + while ((n = pa_split(slaves, ",", &split_state))) { + struct pa_sink *slave_sink; + + if (!(slave_sink = pa_namereg_get(c, n, PA_NAMEREG_SINK, 1))) { + pa_log(__FILE__": invalid slave sink '%s'\n", n); + goto fail; + } + + pa_xfree(n); + + if (!output_new(u, slave_sink)) { + pa_log(__FILE__": failed to create slave sink input on sink '%s'.\n", slave_sink->name); + goto fail; + } + } + + if (u->n_outputs <= 1) + pa_log(__FILE__": WARNING: no slave sinks specified.\n"); + + gettimeofday(&tv, NULL); + tv.tv_sec += ADJUST_TIME; + u->time_event = c->mainloop->time_new(c->mainloop, &tv, time_callback, u); + + pa_modargs_free(ma); + return 0; + +fail: + pa_xfree(n); + + if (ma) + pa_modargs_free(ma); + + pa__done(c, m); + return -1; +} + +void pa__done(struct pa_core *c, struct pa_module*m) { + struct userdata *u; + assert(c && m); + + if (!(u = m->userdata)) + return; + + clear_up(u); + pa_xfree(u); +} + + |