X-Git-Url: https://code.delx.au/pulseaudio/blobdiff_plain/4282b726ee57ebae846ce400fd1cae43c4dfb2ae..12b7a600d8bab4c4cc5ba3f41c6630831e8c5883:/src/modules/module-pipe-source.c?ds=sidebyside

diff --git a/src/modules/module-pipe-source.c b/src/modules/module-pipe-source.c
index 25151d95..36e87322 100644
--- a/src/modules/module-pipe-source.c
+++ b/src/modules/module-pipe-source.c
@@ -5,7 +5,7 @@
 
   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,
+  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
@@ -27,11 +27,13 @@
 #include <sys/stat.h>
 #include <stdio.h>
 #include <errno.h>
-#include <string.h>
 #include <fcntl.h>
 #include <unistd.h>
-#include <limits.h>
-#include <sys/poll.h>
+#include <sys/ioctl.h>
+
+#ifdef HAVE_SYS_FILIO_H
+#include <sys/filio.h>
+#endif
 
 #include <pulse/xmalloc.h>
 
@@ -44,19 +46,21 @@
 #include <pulsecore/thread.h>
 #include <pulsecore/thread-mq.h>
 #include <pulsecore/rtpoll.h>
+#include <pulsecore/poll.h>
 
 #include "module-pipe-source-symdef.h"
 
 PA_MODULE_AUTHOR("Lennart Poettering");
 PA_MODULE_DESCRIPTION("UNIX pipe source");
 PA_MODULE_VERSION(PACKAGE_VERSION);
-PA_MODULE_LOAD_ONCE(FALSE);
+PA_MODULE_LOAD_ONCE(false);
 PA_MODULE_USAGE(
         "source_name=<name for the source> "
+        "source_properties=<properties for the source> "
         "file=<path of the FIFO> "
         "format=<sample format> "
-        "channels=<number of channels> "
         "rate=<sample rate> "
+        "channels=<number of channels> "
         "channel_map=<channel map>");
 
 #define DEFAULT_FILE_NAME "/tmp/music.input"
@@ -80,15 +84,45 @@ struct userdata {
 };
 
 static const char* const valid_modargs[] = {
+    "source_name",
+    "source_properties",
     "file",
+    "format",
     "rate",
     "channels",
-    "format",
-    "source_name",
     "channel_map",
     NULL
 };
 
+static int source_process_msg(
+        pa_msgobject *o,
+        int code,
+        void *data,
+        int64_t offset,
+        pa_memchunk *chunk) {
+
+    struct userdata *u = PA_SOURCE(o)->userdata;
+
+    switch (code) {
+
+        case PA_SOURCE_MESSAGE_GET_LATENCY: {
+            size_t n = 0;
+
+#ifdef FIONREAD
+            int l;
+
+            if (ioctl(u->fd, FIONREAD, &l) >= 0 && l > 0)
+                n = (size_t) l;
+#endif
+
+            *((pa_usec_t*) data) = pa_bytes_to_usec(n, &u->source->sample_spec);
+            return 0;
+        }
+    }
+
+    return pa_source_process_msg(o, code, data, offset, chunk);
+}
+
 static void thread_func(void *userdata) {
     struct userdata *u = userdata;
     int read_type = 0;
@@ -98,7 +132,6 @@ static void thread_func(void *userdata) {
     pa_log_debug("Thread starting up");
 
     pa_thread_mq_install(&u->thread_mq);
-    pa_rtpoll_install(u->rtpoll);
 
     for (;;) {
         int ret;
@@ -112,7 +145,7 @@ static void thread_func(void *userdata) {
             void *p;
 
             if (!u->memchunk.memblock) {
-                u->memchunk.memblock = pa_memblock_new(u->core->mempool, PIPE_BUF);
+                u->memchunk.memblock = pa_memblock_new(u->core->mempool, pa_pipe_buf(u->fd));
                 u->memchunk.index = u->memchunk.length = 0;
             }
 
@@ -129,7 +162,7 @@ static void thread_func(void *userdata) {
                 if (errno == EINTR)
                     continue;
                 else if (errno != EAGAIN) {
-                    pa_log("Faile to read data from FIFO: %s", pa_cstrerror(errno));
+                    pa_log("Failed to read data from FIFO: %s", pa_cstrerror(errno));
                     goto fail;
                 }
 
@@ -151,7 +184,7 @@ static void thread_func(void *userdata) {
         /* Hmm, nothing to do. Let's sleep */
         pollfd->events = (short) (u->source->thread_info.state == PA_SOURCE_RUNNING ? POLLIN : 0);
 
-        if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0)
+        if ((ret = pa_rtpoll_run(u->rtpoll, true)) < 0)
             goto fail;
 
         if (ret == 0)
@@ -175,7 +208,7 @@ finish:
     pa_log_debug("Thread shutting down");
 }
 
-int pa__init(pa_module*m) {
+int pa__init(pa_module *m) {
     struct userdata *u;
     struct stat st;
     pa_sample_spec ss;
@@ -187,37 +220,39 @@ int pa__init(pa_module*m) {
     pa_assert(m);
 
     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
-        pa_log("failed to parse module arguments.");
+        pa_log("Failed to parse module arguments.");
         goto fail;
     }
 
     ss = m->core->default_sample_spec;
+    map = m->core->default_channel_map;
     if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_DEFAULT) < 0) {
-        pa_log("invalid sample format specification or channel map");
+        pa_log("Invalid sample format specification or channel map");
         goto fail;
     }
 
-    u = pa_xnew0(struct userdata, 1);
+    m->userdata = u = pa_xnew0(struct userdata, 1);
     u->core = m->core;
     u->module = m;
-    m->userdata = u;
     pa_memchunk_reset(&u->memchunk);
     u->rtpoll = pa_rtpoll_new();
     pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll);
 
     u->filename = pa_runtime_path(pa_modargs_get_value(ma, "file", DEFAULT_FILE_NAME));
 
-    mkfifo(u->filename, 0666);
-    if ((u->fd = open(u->filename, O_RDWR|O_NOCTTY)) < 0) {
+    if (mkfifo(u->filename, 0666) < 0) {
+        pa_log("mkfifo('%s'): %s", u->filename, pa_cstrerror(errno));
+        goto fail;
+    }
+    if ((u->fd = pa_open_cloexec(u->filename, O_RDWR, 0)) < 0) {
         pa_log("open('%s'): %s", u->filename, pa_cstrerror(errno));
         goto fail;
     }
 
-    pa_make_fd_cloexec(u->fd);
     pa_make_fd_nonblock(u->fd);
 
     if (fstat(u->fd, &st) < 0) {
-        pa_log("fstat('%s'): %s",u->filename, pa_cstrerror(errno));
+        pa_log("fstat('%s'): %s", u->filename, pa_cstrerror(errno));
         goto fail;
     }
 
@@ -235,7 +270,13 @@ int pa__init(pa_module*m) {
     pa_source_new_data_set_sample_spec(&data, &ss);
     pa_source_new_data_set_channel_map(&data, &map);
 
-    u->source = pa_source_new(m->core, &data, 0);
+    if (pa_modargs_get_proplist(ma, "source_properties", data.proplist, PA_UPDATE_REPLACE) < 0) {
+        pa_log("Invalid properties");
+        pa_source_new_data_done(&data);
+        goto fail;
+    }
+
+    u->source = pa_source_new(m->core, &data, PA_SOURCE_LATENCY);
     pa_source_new_data_done(&data);
 
     if (!u->source) {
@@ -243,17 +284,19 @@ int pa__init(pa_module*m) {
         goto fail;
     }
 
+    u->source->parent.process_msg = source_process_msg;
     u->source->userdata = u;
 
     pa_source_set_asyncmsgq(u->source, u->thread_mq.inq);
     pa_source_set_rtpoll(u->source, u->rtpoll);
+    pa_source_set_fixed_latency(u->source, pa_bytes_to_usec(pa_pipe_buf(u->fd), &u->source->sample_spec));
 
     u->rtpoll_item = pa_rtpoll_item_new(u->rtpoll, PA_RTPOLL_NEVER, 1);
     pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
     pollfd->fd = u->fd;
     pollfd->events = pollfd->revents = 0;
 
-    if (!(u->thread = pa_thread_new(thread_func, u))) {
+    if (!(u->thread = pa_thread_new("pipe-source", thread_func, u))) {
         pa_log("Failed to create thread.");
         goto fail;
     }
@@ -273,7 +316,16 @@ fail:
     return -1;
 }
 
-void pa__done(pa_module*m) {
+int pa__get_n_used(pa_module *m) {
+    struct userdata *u;
+
+    pa_assert(m);
+    pa_assert_se(u = m->userdata);
+
+    return pa_source_linked_by(u->source);
+}
+
+void pa__done(pa_module *m) {
     struct userdata *u;
 
     pa_assert(m);