1 files changed, 267 insertions, 0 deletions

diff --git a/HAL-afb/HAL-plugin/HalPlugCtl.c b/HAL-afb/HAL-plugin/HalPlugCtl.c
new file mode 100644
index 0000000..21e7cfc
--- /dev/null
+++ b/HAL-afb/HAL-plugin/HalPlugCtl.c
@@ -0,0 +1,267 @@
+/*
+ * Copyright (C) 2016 "IoT.bzh"
+ * Author Fulup Ar Foll <fulup@iot.bzh>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * 
+ */
+
+
+#include <stdio.h>
+#include <sys/ioctl.h>
+#include <alsa/asoundlib.h>
+#include <alsa/control_external.h>
+#include <linux/soundcard.h>
+
+typedef struct afbHalPlug {
+	snd_ctl_ext_t ext;
+	char *device;
+	unsigned int num_vol_ctls;
+	unsigned int num_rec_items;
+	unsigned int vol_ctl[SOUND_MIXER_NRDEVICES];
+	unsigned int rec_item[SOUND_MIXER_NRDEVICES];
+} afbHalPlug_t;
+
+static const char *const vol_devices[SOUND_MIXER_NRDEVICES] = {
+	[SOUND_MIXER_VOLUME]   = "Master Playback Volume",
+	[SOUND_MIXER_BASS]     = "Tone Control - Bass",
+	[SOUND_MIXER_TREBLE]   = "Tone Control - Treble",
+	[SOUND_MIXER_SYNTH]    = "Synth Playback Volume",
+	[SOUND_MIXER_PCM]      = "PCM Playback Volume",
+	[SOUND_MIXER_SPEAKER]  = "PC Speaker Playback Volume",
+	[SOUND_MIXER_LINE]     = "Line Playback Volume",
+	[SOUND_MIXER_MIC]      = "Mic Playback Volume",
+	[SOUND_MIXER_CD]       = "CD Playback Volume",
+	[SOUND_MIXER_IMIX]     = "Monitor Mix Playback Volume",
+	[SOUND_MIXER_ALTPCM]   = "Headphone Playback Volume",
+	[SOUND_MIXER_RECLEV]   = "Capture Volume",
+	[SOUND_MIXER_IGAIN]    = "Capture Volume",
+	[SOUND_MIXER_OGAIN]    = "Playback Volume",
+	[SOUND_MIXER_LINE1]    = "Aux Playback Volume",
+	[SOUND_MIXER_LINE2]    = "Aux1 Playback Volume",
+	[SOUND_MIXER_LINE3]    = "Line1 Playback Volume",
+	[SOUND_MIXER_DIGITAL1] = "IEC958 Playback Volume",
+	[SOUND_MIXER_DIGITAL2] = "Digital Playback Volume",
+	[SOUND_MIXER_DIGITAL3] = "Digital1 Playback Volume",
+	[SOUND_MIXER_PHONEIN]  = "Phone Playback Volume",
+	[SOUND_MIXER_PHONEOUT] = "Master Mono Playback Volume",
+	[SOUND_MIXER_VIDEO]    = "Video Playback Volume",
+	[SOUND_MIXER_RADIO]    = "Radio Playback Volume",
+	[SOUND_MIXER_MONITOR]  = "Monitor Playback Volume",
+};
+
+static const char *const rec_devices[SOUND_MIXER_NRDEVICES] = {
+	[SOUND_MIXER_VOLUME]   = "Mix Capture Switch",
+	[SOUND_MIXER_SYNTH]    = "Synth Capture Switch",
+	[SOUND_MIXER_PCM]      = "PCM Capture Switch",
+	[SOUND_MIXER_LINE]     = "Line Capture Switch",
+	[SOUND_MIXER_MIC]      = "Mic Capture Switch",
+	[SOUND_MIXER_CD]       = "CD Capture Switch",
+	[SOUND_MIXER_LINE1]    = "Aux Capture Switch",
+	[SOUND_MIXER_LINE2]    = "Aux1 Capture Switch",
+	[SOUND_MIXER_LINE3]    = "Line1 Capture Switch",
+	[SOUND_MIXER_DIGITAL1] = "IEC958 Capture Switch",
+	[SOUND_MIXER_DIGITAL2] = "Digital Capture Switch",
+	[SOUND_MIXER_DIGITAL3] = "Digital1 Capture Switch",
+	[SOUND_MIXER_PHONEIN]  = "Phone Capture Switch",
+	[SOUND_MIXER_VIDEO]    = "Video Capture Switch",
+	[SOUND_MIXER_RADIO]    = "Radio Capture Switch",
+};	
+
+static const char *const rec_items[SOUND_MIXER_NRDEVICES] = {
+	[SOUND_MIXER_VOLUME]   = "Mix",
+	[SOUND_MIXER_SYNTH]    = "Synth",
+	[SOUND_MIXER_PCM]      = "PCM",
+	[SOUND_MIXER_LINE]     = "Line",
+	[SOUND_MIXER_MIC]      = "Mic",
+	[SOUND_MIXER_CD]       = "CD",
+	[SOUND_MIXER_LINE1]    = "Aux",
+	[SOUND_MIXER_LINE2]    = "Aux1",
+	[SOUND_MIXER_LINE3]    = "Line1",
+	[SOUND_MIXER_DIGITAL1] = "IEC958",
+	[SOUND_MIXER_DIGITAL2] = "Digital",
+	[SOUND_MIXER_DIGITAL3] = "Digital1",
+	[SOUND_MIXER_PHONEIN]  = "Phone",
+	[SOUND_MIXER_VIDEO]    = "Video",
+	[SOUND_MIXER_RADIO]    = "Radio",
+};	
+
+
+
+
+static snd_ctl_ext_key_t AfbHalElemFind(snd_ctl_ext_t *ext,
+				       const snd_ctl_elem_id_t *id) {
+       
+	snd_ctl_hal_t *ctlHal = ext->private_data;
+	const char *name;
+	unsigned int i, key, numid;
+
+	numid = snd_ctl_elem_id_get_numid(id);
+	if (numid > 0) {
+		numid--;
+		if (numid < afbHalPlug->num_vol_ctls)
+			return afbHalPlug->vol_ctl[numid];
+		numid -= afbHalPlug->num_vol_ctls;
+		if (afbHalPlug->exclusive_input) {
+			if (!numid)
+				return OSS_KEY_CAPTURE_MUX;
+		} else if (numid < afbHalPlug->num_rec_items)
+			return afbHalPlug->rec_item[numid] |
+				OSS_KEY_CAPTURE_FLAG;
+	}
+
+	name = snd_ctl_elem_id_get_name(id);
+	if (! strcmp(name, "Capture Source")) {
+		if (afbHalPlug->exclusive_input)
+			return OSS_KEY_CAPTURE_MUX;
+		else
+			return SND_CTL_EXT_KEY_NOT_FOUND;
+	}
+	for (i = 0; i < afbHalPlug->num_vol_ctls; i++) {
+		key = afbHalPlug->vol_ctl[i];
+		if (! strcmp(name, vol_devices[key]))
+			return key;
+	}
+	for (i = 0; i < afbHalPlug->num_rec_items; i++) {
+		key = afbHalPlug->rec_item[i];
+		if (! strcmp(name, rec_devices[key]))
+			return key | OSS_KEY_CAPTURE_FLAG;
+	}
+	return SND_CTL_EXT_KEY_NOT_FOUND;
+}
+
+static int AfbHalGetAttrib(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key,
+			     int *type, unsigned int *acc, unsigned int *count) {
+	return 0;
+}
+
+static int AfbHalGetInfo(snd_ctl_ext_t *ext ATTRIBUTE_UNUSED,
+				snd_ctl_ext_key_t key ATTRIBUTE_UNUSED,
+				long *imin, long *imax, long *istep) {
+
+	return 0;
+}
+
+static int AfbHalGetEnumInfo(snd_ctl_ext_t *ext,
+				   snd_ctl_ext_key_t key ATTRIBUTE_UNUSED,
+				   unsigned int *items) {
+
+	return 0;
+}
+
+static int AfbHalGetEnumName(snd_ctl_ext_t *ext,
+				   snd_ctl_ext_key_t key ATTRIBUTE_UNUSED,
+				   unsigned int item, char *name,
+				   size_t name_max_len) {
+
+	return 0;
+}
+
+static int AfbHalReadInt(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, long *value) {
+
+	return 0;
+}
+
+static int AfbHalReadEnumerate(snd_ctl_ext_t *ext,
+			       snd_ctl_ext_key_t key ATTRIBUTE_UNUSED,
+			       unsigned int *items) {
+
+	return 0;
+}
+
+static int AfbHalWriteInt(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, long *value) {
+
+    return 0;
+}
+
+static int AfbHalWriteEnum(snd_ctl_ext_t *ext,
+				snd_ctl_ext_key_t key ATTRIBUTE_UNUSED,
+				unsigned int *items) {
+
+    return 0;
+}
+
+static int AfbHalEventRead(snd_ctl_ext_t *ext ATTRIBUTE_UNUSED,
+			  snd_ctl_elem_id_t *id ATTRIBUTE_UNUSED,
+			  unsigned int *event_mask ATTRIBUTE_UNUSED)
+{
+	return -EAGAIN;
+}
+
+static snd_ctl_ext_callback_t afbHalCBs = {
+	.close               = AfbHalClose,
+	.elem_count          = AfbHalElemCount,
+	.elem_list           = AfbHalElemList,
+	.find_elem           = AfbHalElemFind,
+	.get_attribute       = AfbHalGetAttrib,
+	.get_integer_info    = AfbHalGetInfo,
+	.get_enumerated_info = AfbHalGetEnumInfo,
+	.get_enumerated_name = AfbHalGetEnumName,
+	.read_integer        = AfbHalReadInt,
+	.read_enumerated     = AfbHalReadEnumerate,
+	.write_integer       = AfbHalWriteInt,
+	.write_enumerated    = AfbHalWriteEnum,
+	.read_event          = AfbHalEventRead,
+};
+
+
+SND_CTL_PLUGIN_DEFINE_FUNC(afb_hal) {
+
+    snd_config_iterator_t it, next;
+    afbHalPlug_t *afbHalPlug;
+    int err;
+	
+	snd_config_for_each(it, next, conf) {
+		snd_config_t *n = snd_config_iterator_entry(it);
+		const char *id;
+		if (snd_config_get_id(n, &id) < 0)
+			continue;
+		if (strcmp(id, "comment") == 0 || strcmp(id, "type") == 0 || strcmp(id, "hint") == 0)
+			continue;
+		if (strcmp(id, "slave") == 0) {
+			if (snd_config_get_string(n, &device) < 0) {
+				SNDERR("Invalid type for %s", id);
+				return -EINVAL;
+			}
+			continue;
+		}
+		SNDERR("Unknown field %s", id);
+		return -EINVAL;
+	}
+
+        // Create ALSA control plugin structure
+	afbHalPlug->ext.version = SND_CTL_EXT_VERSION;
+	afbHalPlug->ext.card_idx = 0; /* FIXME */
+	strcpy(afbHalPlug->ext.id, "AFB-HAL-CTL");
+	strcpy(afbHalPlug->ext.driver, "AFB-HAL");
+	strcpy(afbHalPlug->ext.name, "AFB-HAL Control Plugin");
+	strcpy(afbHalPlug->ext.mixername, "AFB-HAL Mixer Plugin");
+	strcpy(afbHalPlug->ext.longname, "Automotive-Linux Sound Abstraction Control Plugin");
+	afbHalPlug->ext.poll_fd      = -1;
+	afbHalPlug->ext.callback     = &afbHalCBs;
+	afbHalPlug->ext.private_data = afbHalPlug;
+
+
+	err = snd_ctl_ext_create(&afbHalPlug->ext, name, mode);
+	if (err < 0) goto OnErrorExit;
+
+        // Plugin register controls update handlep before exiting
+	*handlep = afbHalPlug->ext.handle;
+	return 0;
+
+OnErrorExit: 
+	free(afbHalPlug);
+	return -1;
+}
+
+SND_CTL_PLUGIN_SYMBOL(afb_hal);