am fe46e6a9: libhardware: add Consumer IR HAL API

* commit 'fe46e6a90675fc637a1482e8dfeb27e374b7600d': libhardware: add Consumer IR HAL API
2013-09-10 12:54:16 -07:00 · 2013-09-10 12:54:16 -07:00 · 1e3073bf08
commit 1e3073bf08
parent 9c83f1d807 fe46e6a906
1 changed files with 80 additions and 0 deletions
--- a/include/hardware/consumerir.h
+++ b/include/hardware/consumerir.h
@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * 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.
+ */
+
+#ifndef ANDROID_INCLUDE_HARDWARE_CONSUMERIR_H
+#define ANDROID_INCLUDE_HARDWARE_CONSUMERIR_H
+
+#include <stdint.h>
+#include <sys/cdefs.h>
+#include <hardware/hardware.h>
+#include <hardware/hwcomposer_defs.h>
+
+#define CONSUMERIR_MODULE_API_VERSION_1_0 HARDWARE_MODULE_API_VERSION(1, 0)
+#define CONSUMERIR_HARDWARE_MODULE_ID "consumerir"
+#define CONSUMERIR_TRANSMITTER "transmitter"
+
+typedef struct consumerir_freq_range {
+    int min;
+    int max;
+} consumerir_freq_range_t;
+
+typedef struct consumerir_module {
+    struct hw_module_t common;
+} consumerir_module_t;
+
+typedef struct consumerir_device {
+    struct hw_device_t common;
+
+    /*
+     * (*transmit)() is called to by the ConsumerIrService to send an IR pattern
+     * at a given carrier_freq.
+     *
+     * The pattern is alternating series of carrier on and off periods measured in
+     * microseconds.  The carrier should be turned off at the end of a transmit
+     * even if there are and odd number of entries in the pattern array.
+     *
+     * This call should return when the transmit is complete or encounters an error.
+     *
+     * returns: 0 on success. A negative error code on error.
+     */
+    int (*transmit)(struct consumerir_device *dev, int carrier_freq,
+            int pattern[], int pattern_len);
+
+    /*
+     * (*get_num_carrier_freqs)() is called by the ConsumerIrService to get the
+     * number of carrier freqs to allocate space for, which is then filled by
+     * a subsequent call to (*get_carrier_freqs)().
+     *
+     * returns: the number of ranges on success. A negative error code on error.
+     */
+    int (*get_num_carrier_freqs)(struct consumerir_device *dev);
+
+    /*
+     * (*get_carrier_freqs)() is called by the ConsumerIrService to enumerate
+     * which frequencies the IR transmitter supports.  The HAL implementation
+     * should fill an array of consumerir_freq_range structs with the
+     * appropriate values for the transmitter.
+     *
+     * returns: the number of ranges on success. A negative error code on error.
+     */
+    int (*get_carrier_freqs)(struct consumerir_device *dev,
+            consumerir_freq_range_t *ranges);
+
+    /* Reserved for future use. Must be NULL. */
+    void* reserved[8 - 3];
+} consumerir_device_t;
+
+#endif /* ANDROID_INCLUDE_HARDWARE_CONSUMERIR_H */