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more hacking
Move plugin API to separate directory for now Add ringbuffer and way to get ringbuffer from a port
This commit is contained in:
Wim Taymans
parent
b8f6e99537
commit
3c029cba53
56 changed files with 7055 additions and 1530 deletions
393
pinos/client/ringbuffer.c
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393
pinos/client/ringbuffer.c
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/* Pinos
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* Copyright (C) 2015 Wim Taymans <wim.taymans@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#define _GNU_SOURCE
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#include <unistd.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <sys/eventfd.h>
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#include <sys/mman.h>
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#include <gio/gio.h>
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#include <glib-object.h>
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#include <pinos/client/enumtypes.h>
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#include <pinos/client/ringbuffer.h>
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#include <spa/include/spa/ringbuffer.h>
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#include <spa/lib/ringbuffer.c>
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#define PINOS_RINGBUFFER_GET_PRIVATE(rb) \
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(G_TYPE_INSTANCE_GET_PRIVATE ((rb), PINOS_TYPE_RINGBUFFER, PinosRingbufferPrivate))
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typedef struct {
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SpaRingbuffer rbuf;
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/* ringbuffer starts here */
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} PinosRingbufferData;
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struct _PinosRingbufferPrivate
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{
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PinosRingbufferMode mode;
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guint size;
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guint fdsize;
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int fd;
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int semaphore;
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PinosRingbufferData *data;
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};
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G_DEFINE_TYPE (PinosRingbuffer, pinos_ringbuffer, G_TYPE_OBJECT);
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enum
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{
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PROP_0,
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PROP_MODE,
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PROP_SIZE,
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PROP_FD,
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PROP_FDSIZE,
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PROP_SEMAPHORE,
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};
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enum
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{
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SIGNAL_NONE,
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LAST_SIGNAL
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};
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static guint signals[LAST_SIGNAL] = { 0 };
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static void
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pinos_ringbuffer_get_property (GObject *_object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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PinosRingbuffer *rb = PINOS_RINGBUFFER (_object);
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PinosRingbufferPrivate *priv = rb->priv;
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switch (prop_id) {
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case PROP_MODE:
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g_value_set_enum (value, priv->mode);
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break;
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case PROP_SIZE:
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g_value_set_uint (value, priv->size);
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break;
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case PROP_FD:
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g_value_set_int (value, priv->fd);
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break;
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case PROP_FDSIZE:
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g_value_set_uint (value, priv->fdsize);
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break;
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case PROP_SEMAPHORE:
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g_value_set_int (value, priv->semaphore);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (rb, prop_id, pspec);
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break;
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}
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}
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static void
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pinos_ringbuffer_set_property (GObject *_object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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PinosRingbuffer *rb = PINOS_RINGBUFFER (_object);
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PinosRingbufferPrivate *priv = rb->priv;
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switch (prop_id) {
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case PROP_MODE:
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priv->mode = g_value_get_enum (value);
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break;
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case PROP_SIZE:
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priv->size = g_value_get_uint (value);
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break;
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case PROP_FD:
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priv->fd = g_value_get_int (value);
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break;
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case PROP_FDSIZE:
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priv->fdsize = g_value_get_uint (value);
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break;
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case PROP_SEMAPHORE:
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priv->semaphore = g_value_get_int (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (rb, prop_id, pspec);
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break;
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}
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}
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static int
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tmpfile_create (gsize size)
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{
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char filename[] = "/dev/shm/tmpfilepay.XXXXXX";
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int fd, result;
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fd = mkostemp (filename, O_CLOEXEC);
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if (fd == -1)
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return -1;
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unlink (filename);
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result = ftruncate (fd, size);
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if (result == -1) {
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close (fd);
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return -1;
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}
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return fd;
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}
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static void
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pinos_ringbuffer_constructed (GObject * obj)
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{
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PinosRingbuffer *rb = PINOS_RINGBUFFER (obj);
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PinosRingbufferPrivate *priv = rb->priv;
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g_debug ("ringbuffer %p: constructed", rb);
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if (priv->fd == -1) {
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priv->fdsize = priv->size + sizeof (PinosRingbufferData);
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priv->fd = tmpfile_create (priv->fdsize);
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priv->semaphore = eventfd (0, EFD_CLOEXEC);
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}
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priv->data = mmap (NULL, priv->fdsize, PROT_READ | PROT_WRITE, MAP_SHARED, priv->fd, 0);
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spa_ringbuffer_init (&priv->data->rbuf, (guint8 *)priv->data + sizeof (PinosRingbufferData), priv->size);
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G_OBJECT_CLASS (pinos_ringbuffer_parent_class)->constructed (obj);
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}
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static void
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pinos_ringbuffer_dispose (GObject * obj)
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{
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PinosRingbuffer *rb = PINOS_RINGBUFFER (obj);
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g_debug ("ringbuffer %p: dispose", rb);
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G_OBJECT_CLASS (pinos_ringbuffer_parent_class)->dispose (obj);
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}
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static void
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pinos_ringbuffer_finalize (GObject * obj)
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{
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PinosRingbuffer *rb = PINOS_RINGBUFFER (obj);
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g_debug ("ringbuffer %p: finalize", rb);
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G_OBJECT_CLASS (pinos_ringbuffer_parent_class)->finalize (obj);
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}
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static void
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pinos_ringbuffer_class_init (PinosRingbufferClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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g_type_class_add_private (klass, sizeof (PinosRingbufferPrivate));
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gobject_class->constructed = pinos_ringbuffer_constructed;
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gobject_class->dispose = pinos_ringbuffer_dispose;
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gobject_class->finalize = pinos_ringbuffer_finalize;
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gobject_class->set_property = pinos_ringbuffer_set_property;
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gobject_class->get_property = pinos_ringbuffer_get_property;
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g_object_class_install_property (gobject_class,
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PROP_MODE,
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g_param_spec_enum ("mode",
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"Mode",
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"The mode of the ringbuffer",
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PINOS_TYPE_RINGBUFFER_MODE,
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PINOS_RINGBUFFER_MODE_READ,
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G_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY |
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G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class,
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PROP_SIZE,
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g_param_spec_uint ("size",
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"Size",
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"The size of the ringbuffer",
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1,
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G_MAXUINT,
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64 * 1024,
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G_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY |
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G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class,
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PROP_FD,
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g_param_spec_int ("fd",
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"Fd",
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"The file descriptor with memory",
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-1,
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G_MAXINT,
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-1,
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G_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY |
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G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class,
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PROP_FDSIZE,
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g_param_spec_uint ("fdsize",
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"Fd Size",
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"Size of the memory",
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1,
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G_MAXUINT,
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-1,
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G_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY |
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G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class,
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PROP_SEMAPHORE,
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g_param_spec_int ("semaphore",
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"Semaphore",
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"Semaphore file desciptor",
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-1,
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G_MAXINT,
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-1,
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G_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY |
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G_PARAM_STATIC_STRINGS));
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}
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static void
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pinos_ringbuffer_init (PinosRingbuffer * rb)
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{
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PinosRingbufferPrivate *priv = rb->priv = PINOS_RINGBUFFER_GET_PRIVATE (rb);
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g_debug ("ringbuffer %p: new %u", rb, priv->size);
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priv->mode = PINOS_RINGBUFFER_MODE_READ;
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priv->size = 0;
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priv->fd = -1;
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}
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PinosRingbuffer *
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pinos_ringbuffer_new (PinosRingbufferMode mode,
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gsize size)
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{
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PinosRingbuffer *rb;
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g_return_val_if_fail (size > 0, NULL);
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rb = g_object_new (PINOS_TYPE_RINGBUFFER,
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"size", size,
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"mode", mode,
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NULL);
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return rb;
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}
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PinosRingbuffer *
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pinos_ringbuffer_new_import (PinosRingbufferMode mode,
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guint fdsize,
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int fd,
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int semaphore)
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{
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PinosRingbuffer *rb;
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g_return_val_if_fail (fdsize > 0, NULL);
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g_return_val_if_fail (fd >= 0, NULL);
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rb = g_object_new (PINOS_TYPE_RINGBUFFER,
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"mode", mode,
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"fd", fd,
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"fdsize", fdsize,
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"semaphore", semaphore,
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NULL);
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return rb;
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}
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gboolean
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pinos_ringbuffer_get_read_areas (PinosRingbuffer *rbuf,
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PinosRingbufferArea areas[2])
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{
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PinosRingbufferPrivate *priv;
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g_return_val_if_fail (PINOS_IS_RINGBUFFER (rbuf), FALSE);
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priv = rbuf->priv;
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spa_ringbuffer_get_read_areas (&priv->data->rbuf, (SpaRingbufferArea *)areas);
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return TRUE;
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}
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gboolean
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pinos_ringbuffer_get_write_areas (PinosRingbuffer *rbuf,
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PinosRingbufferArea areas[2])
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{
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PinosRingbufferPrivate *priv;
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g_return_val_if_fail (PINOS_IS_RINGBUFFER (rbuf), FALSE);
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priv = rbuf->priv;
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spa_ringbuffer_get_write_areas (&priv->data->rbuf, (SpaRingbufferArea *)areas);
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return TRUE;
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}
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gboolean
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pinos_ringbuffer_read_advance (PinosRingbuffer *rbuf,
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gssize len)
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{
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PinosRingbufferPrivate *priv;
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guint64 val;
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g_return_val_if_fail (PINOS_IS_RINGBUFFER (rbuf), FALSE);
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priv = rbuf->priv;
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spa_ringbuffer_read_advance (&priv->data->rbuf, len);
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if (priv->mode == PINOS_RINGBUFFER_MODE_READ) {
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val = 1;
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write (priv->semaphore, &val, 8);
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}
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return TRUE;
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}
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gboolean
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pinos_ringbuffer_write_advance (PinosRingbuffer *rbuf,
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gssize len)
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{
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PinosRingbufferPrivate *priv;
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guint64 val;
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g_return_val_if_fail (PINOS_IS_RINGBUFFER (rbuf), FALSE);
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priv = rbuf->priv;
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spa_ringbuffer_write_advance (&priv->data->rbuf, len);
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if (priv->mode == PINOS_RINGBUFFER_MODE_WRITE) {
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val = 1;
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write (priv->semaphore, &val, 8);
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}
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return TRUE;
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}
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