Merge branch 'oss-alsa'

1 files changed, 392 insertions, 0 deletions

diff --git a/backends/oss/oss-stream-control.c b/backends/oss/oss-stream-control.c
new file mode 100644
index 0000000..5161528
--- /dev/null
+++ b/backends/oss/oss-stream-control.c
@@ -0,0 +1,392 @@
+/*
+ * Copyright (C) 2014 Michal Ratajsky <[email protected]>
+ *
+ * This library 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 licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <errno.h>
+#include <glib.h>
+#include <glib/gstdio.h>
+#include <glib-object.h>
+
+#include <libmatemixer/matemixer.h>
+#include <libmatemixer/matemixer-private.h>
+
+#include "oss-common.h"
+#include "oss-stream-control.h"
+
+struct _OssStreamControlPrivate
+{
+    gint                        fd;
+    gint                        devnum;
+    guint                       volume[2];
+    gfloat                      balance;
+    gboolean                    stereo;
+    MateMixerStreamControlRole  role;
+    MateMixerStreamControlFlags flags;
+};
+
+static void oss_stream_control_class_init (OssStreamControlClass *klass);
+
+static void oss_stream_control_init       (OssStreamControl      *control);
+static void oss_stream_control_finalize   (GObject               *object);
+
+G_DEFINE_TYPE (OssStreamControl, oss_stream_control, MATE_MIXER_TYPE_STREAM_CONTROL)
+
+static gboolean                 oss_stream_control_set_mute             (MateMixerStreamControl  *mmsc,
+                                                                         gboolean                 mute);
+
+static guint                    oss_stream_control_get_num_channels     (MateMixerStreamControl  *mmsc);
+
+static guint                    oss_stream_control_get_volume           (MateMixerStreamControl  *mmsc);
+
+static gboolean                 oss_stream_control_set_volume           (MateMixerStreamControl  *mmsc,
+                                                                         guint                    volume);
+
+static gboolean                 oss_stream_control_has_channel_position (MateMixerStreamControl  *mmsc,
+                                                                         MateMixerChannelPosition position);
+static MateMixerChannelPosition oss_stream_control_get_channel_position (MateMixerStreamControl  *mmsc,
+                                                                         guint                    channel);
+
+static guint                    oss_stream_control_get_channel_volume   (MateMixerStreamControl  *mmsc,
+                                                                         guint                    channel);
+static gboolean                 oss_stream_control_set_channel_volume   (MateMixerStreamControl  *mmsc,
+                                                                         guint                    channel,
+                                                                         guint                    volume);
+
+static gboolean                 oss_stream_control_set_balance          (MateMixerStreamControl  *mmsc,
+                                                                         gfloat                   balance);
+
+static guint                    oss_stream_control_get_min_volume       (MateMixerStreamControl  *mmsc);
+static guint                    oss_stream_control_get_max_volume       (MateMixerStreamControl  *mmsc);
+static guint                    oss_stream_control_get_normal_volume    (MateMixerStreamControl  *mmsc);
+static guint                    oss_stream_control_get_base_volume      (MateMixerStreamControl  *mmsc);
+
+static gboolean                 write_volume                            (OssStreamControl        *control,
+                                                                         gint                     volume);
+
+static void
+oss_stream_control_class_init (OssStreamControlClass *klass)
+{
+    GObjectClass                *object_class;
+    MateMixerStreamControlClass *control_class;
+
+    object_class = G_OBJECT_CLASS (klass);
+    object_class->finalize = oss_stream_control_finalize;
+
+    control_class = MATE_MIXER_STREAM_CONTROL_CLASS (klass);
+    control_class->set_mute             = oss_stream_control_set_mute;
+    control_class->get_num_channels     = oss_stream_control_get_num_channels;
+    control_class->get_volume           = oss_stream_control_get_volume;
+    control_class->set_volume           = oss_stream_control_set_volume;
+    control_class->get_channel_volume   = oss_stream_control_get_channel_volume;
+    control_class->set_channel_volume   = oss_stream_control_set_channel_volume;
+    control_class->get_channel_position = oss_stream_control_get_channel_position;
+    control_class->has_channel_position = oss_stream_control_has_channel_position;
+    control_class->set_balance          = oss_stream_control_set_balance;
+    control_class->get_min_volume       = oss_stream_control_get_min_volume;
+    control_class->get_max_volume       = oss_stream_control_get_max_volume;
+    control_class->get_normal_volume    = oss_stream_control_get_normal_volume;
+    control_class->get_base_volume      = oss_stream_control_get_base_volume;
+
+    g_type_class_add_private (object_class, sizeof (OssStreamControlPrivate));
+}
+
+static void
+oss_stream_control_init (OssStreamControl *control)
+{
+    control->priv = G_TYPE_INSTANCE_GET_PRIVATE (control,
+                                                 OSS_TYPE_STREAM_CONTROL,
+                                                 OssStreamControlPrivate);
+}
+
+static void
+oss_stream_control_finalize (GObject *object)
+{
+    OssStreamControl *control;
+
+    control = OSS_STREAM_CONTROL (object);
+
+    close (control->priv->fd);
+
+    G_OBJECT_CLASS (oss_stream_control_parent_class)->finalize (object);
+}
+
+OssStreamControl *
+oss_stream_control_new (const gchar               *name,
+                        const gchar               *label,
+                        MateMixerStreamControlRole role,
+                        gint                       fd,
+                        gint                       devnum,
+                        gboolean                   stereo)
+{
+    OssStreamControl           *control;
+    MateMixerStreamControlFlags flags;
+
+    flags = MATE_MIXER_STREAM_CONTROL_HAS_VOLUME |
+            MATE_MIXER_STREAM_CONTROL_CAN_SET_VOLUME;
+    if (stereo == TRUE)
+        flags |= MATE_MIXER_STREAM_CONTROL_CAN_BALANCE;
+
+    control = g_object_new (OSS_TYPE_STREAM_CONTROL,
+                            "name", name,
+                            "label", label,
+                            "flags", flags,
+                            NULL);
+
+    control->priv->fd = fd;
+    control->priv->devnum = devnum;
+    control->priv->stereo = stereo;
+    return control;
+}
+
+gboolean
+oss_stream_control_update (OssStreamControl *control)
+{
+    gint v;
+    gint ret;
+
+    g_return_val_if_fail (OSS_IS_STREAM_CONTROL (control), FALSE);
+
+    ret = ioctl (control->priv->fd, MIXER_READ (control->priv->devnum), &v);
+    if (ret < 0) {
+        g_warning ("Failed to read volume: %s", g_strerror (errno));
+        return FALSE;
+    }
+
+    control->priv->volume[0] = v & 0xFF;
+
+    if (control->priv->stereo == TRUE) {
+        gfloat balance;
+        guint  left;
+        guint  right;
+
+        control->priv->volume[1] = (v >> 8) & 0xFF;
+
+        /* Calculate balance */
+        left  = control->priv->volume[0];
+        right = control->priv->volume[1];
+        if (left == right)
+            balance = 0.0f;
+        else if (left > right)
+            balance = -1.0f + ((gfloat) right / (gfloat) left);
+        else
+            balance = +1.0f - ((gfloat) left / (gfloat) right);
+
+        _mate_mixer_stream_control_set_balance (MATE_MIXER_STREAM_CONTROL (control),
+                                                balance);
+    }
+    return TRUE;
+}
+
+static gboolean
+oss_stream_control_set_mute (MateMixerStreamControl *mmsc, gboolean mute)
+{
+    g_return_val_if_fail (OSS_IS_STREAM_CONTROL (mmsc), FALSE);
+
+    // TODO
+    return TRUE;
+}
+
+static guint
+oss_stream_control_get_num_channels (MateMixerStreamControl *mmsc)
+{
+    g_return_val_if_fail (OSS_IS_STREAM_CONTROL (mmsc), 0);
+
+    return (OSS_STREAM_CONTROL (mmsc)->priv->stereo == TRUE) ? 2 : 1;
+}
+
+static guint
+oss_stream_control_get_volume (MateMixerStreamControl *mmsc)
+{
+    OssStreamControl *control;
+
+    g_return_val_if_fail (OSS_IS_STREAM_CONTROL (mmsc), 0);
+
+    control = OSS_STREAM_CONTROL (mmsc);
+
+    if (control->priv->stereo == TRUE)
+        return MAX (control->priv->volume[0], control->priv->volume[1]);
+    else
+        return control->priv->volume[0];
+}
+
+static gboolean
+oss_stream_control_set_volume (MateMixerStreamControl *mmsc, guint volume)
+{
+    OssStreamControl *control;
+    gint              v;
+
+    g_return_val_if_fail (OSS_IS_STREAM_CONTROL (mmsc), FALSE);
+
+    control = OSS_STREAM_CONTROL (mmsc);
+
+    v = CLAMP (volume, 0, 100);
+    if (control->priv->stereo == TRUE)
+        v |= (volume & 0xFF) << 8;
+
+    return write_volume (control, v);
+}
+
+static guint
+oss_stream_control_get_channel_volume (MateMixerStreamControl *mmsc, guint channel)
+{
+    OssStreamControl *control;
+
+    g_return_val_if_fail (OSS_IS_STREAM_CONTROL (mmsc), 0);
+
+    control = OSS_STREAM_CONTROL (mmsc);
+
+    if (control->priv->stereo == TRUE) {
+        if (channel == 0 || channel == 1)
+            return control->priv->volume[channel];
+    } else {
+        if (channel == 0)
+            return control->priv->volume[0];
+    }
+    return 0;
+}
+
+static gboolean
+oss_stream_control_set_channel_volume (MateMixerStreamControl *mmsc,
+                                       guint                   channel,
+                                       guint                   volume)
+{
+    OssStreamControl *control;
+    gint              v;
+
+    g_return_val_if_fail (OSS_IS_STREAM_CONTROL (mmsc), FALSE);
+
+    control = OSS_STREAM_CONTROL (mmsc);
+    volume  = CLAMP (volume, 0, 100);
+
+    if (control->priv->stereo == TRUE) {
+        if (channel > 1)
+            return FALSE;
+
+        /* Stereo channel volume - left channel is in the lowest 8 bits and
+         * right channel is in the higher 8 bits */
+        if (channel == 0)
+            v = volume | (control->priv->volume[1] << 8);
+        else
+            v = control->priv->volume[0] | (volume << 8);
+    } else {
+        if (channel > 0)
+            return FALSE;
+
+        /* Single channel volume - only lowest 8 bits are used */
+        v = volume;
+    }
+
+    return write_volume (control, v);
+}
+
+static MateMixerChannelPosition
+oss_stream_control_get_channel_position (MateMixerStreamControl *mmsc, guint channel)
+{
+    OssStreamControl *control;
+
+    g_return_val_if_fail (OSS_IS_STREAM_CONTROL (mmsc), MATE_MIXER_CHANNEL_UNKNOWN);
+
+    control = OSS_STREAM_CONTROL (mmsc);
+
+    if (control->priv->stereo == TRUE) {
+        if (channel == 0)
+            return MATE_MIXER_CHANNEL_FRONT_LEFT;
+        else if (channel == 1)
+            return MATE_MIXER_CHANNEL_FRONT_RIGHT;
+    } else {
+        if (channel == 0)
+            return MATE_MIXER_CHANNEL_MONO;
+    }
+    return MATE_MIXER_CHANNEL_UNKNOWN;
+}
+
+static gboolean
+oss_stream_control_has_channel_position (MateMixerStreamControl  *mmsc,
+                                         MateMixerChannelPosition position)
+{
+    g_return_val_if_fail (OSS_IS_STREAM_CONTROL (mmsc), FALSE);
+
+    if (position == MATE_MIXER_CHANNEL_MONO)
+        return OSS_STREAM_CONTROL (mmsc)->priv->stereo == FALSE;
+
+    if (position == MATE_MIXER_CHANNEL_FRONT_LEFT ||
+        position == MATE_MIXER_CHANNEL_FRONT_RIGHT)
+        return OSS_STREAM_CONTROL (mmsc)->priv->stereo == TRUE;
+
+    return FALSE;
+}
+
+static gboolean
+oss_stream_control_set_balance (MateMixerStreamControl *mmsc, gfloat balance)
+{
+    OssStreamControl *control;
+    guint             max;
+    gint              v;
+
+    g_return_val_if_fail (OSS_IS_STREAM_CONTROL (mmsc), FALSE);
+
+    control = OSS_STREAM_CONTROL (mmsc);
+
+    max = MAX (control->priv->volume[0], control->priv->volume[1]);
+    if (balance <= 0) {
+        control->priv->volume[1] = (balance + 1.0f) * max;
+        control->priv->volume[0] = max;
+    } else {
+        control->priv->volume[0] = (1.0f - balance) * max;
+        control->priv->volume[1] = max;
+    }
+
+    v = control->priv->volume[0] | (control->priv->volume[1] << 8);
+
+    return write_volume (control, v);
+}
+
+static guint
+oss_stream_control_get_min_volume (MateMixerStreamControl *mmsc)
+{
+    return 0;
+}
+
+static guint
+oss_stream_control_get_max_volume (MateMixerStreamControl *mmsc)
+{
+    return 100;
+}
+
+static guint
+oss_stream_control_get_normal_volume (MateMixerStreamControl *mmsc)
+{
+    return 100;
+}
+
+static guint
+oss_stream_control_get_base_volume (MateMixerStreamControl *mmsc)
+{
+    return 100;
+}
+
+static gboolean
+write_volume (OssStreamControl *control, gint volume)
+{
+    gint ret;
+
+    ret = ioctl (control->priv->fd, MIXER_WRITE (control->priv->devnum), &volume);
+    if (ret < 0) {
+        g_warning ("Failed to set volume: %s", g_strerror (errno));
+        return FALSE;
+    }
+    return TRUE;
+}