sepolicy: escape dots

* Based on AOSP yukawa HDMI-CEC HAL
  https://android.googlesource.com/device/amlogic/yukawa/+/refs/heads/main/hal/hdmicec/

audio/Android.bp

@@ -1,5 +1,5 @@
 // Copyright (C) 2015 The Android Open Source Project
-// Copyright (C) 2021-2022 KonstaKANG
+// Copyright (C) 2021-2023 KonstaKANG
 //
 // SPDX-License-Identifier: Apache-2.0
 
@@ -22,3 +22,22 @@ cc_library_shared {
     ],
     cflags: ["-Wno-unused-parameter"],
 }
+
+cc_library_shared {
+    name: "audio.primary.rpi_hdmi",
+    relative_install_path: "hw",
+    proprietary: true,
+    srcs: ["audio_hw_hdmi.c"],
+    include_dirs: [
+        "external/expat/lib",
+        "system/media/audio_effects/include",
+        "system/media/audio_utils/include",
+    ],
+    header_libs: ["libhardware_headers"],
+    shared_libs: [
+        "libcutils",
+        "liblog",
+        "libasound",
+    ],
+    cflags: ["-Wno-unused-parameter"],
+}

audio/audio_hw_hdmi.c

@@ -0,0 +1,770 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2021-2023 KonstaKANG
+ *
+ * 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.
+ */
+
+#define LOG_TAG "audio_hw_rpi_hdmi"
+//#define LOG_NDEBUG 0
+
+#include <errno.h>
+#include <malloc.h>
+#include <pthread.h>
+#include <stdint.h>
+#include <sys/time.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <log/log.h>
+#include <cutils/str_parms.h>
+#include <cutils/properties.h>
+
+#include <hardware/hardware.h>
+#include <system/audio.h>
+#include <hardware/audio.h>
+
+#include <alsa/asoundlib.h>
+#include <audio_utils/resampler.h>
+#include <audio_utils/echo_reference.h>
+#include <hardware/audio_effect.h>
+#include <audio_effects/effect_aec.h>
+
+
+/* Minimum granularity - Arbitrary but small value */
+#define CODEC_BASE_FRAME_COUNT 32
+
+/* number of base blocks in a short period (low latency) */
+#define PERIOD_MULTIPLIER 32  /* 21 ms */
+/* number of frames per short period (low latency) */
+#define PERIOD_SIZE (CODEC_BASE_FRAME_COUNT * PERIOD_MULTIPLIER)
+/* number of pseudo periods for low latency playback */
+#define PLAYBACK_PERIOD_COUNT 4
+#define PLAYBACK_PERIOD_START_THRESHOLD 2
+#define CODEC_SAMPLING_RATE 48000
+#define CHANNEL_STEREO 2
+#define MIN_WRITE_SLEEP_US      5000
+
+struct stub_stream_in {
+    struct audio_stream_in stream;
+};
+
+struct alsa_audio_device {
+    struct audio_hw_device hw_device;
+
+    pthread_mutex_t lock;   /* see note below on mutex acquisition order */
+    int devices;
+    struct alsa_stream_in *active_input;
+    struct alsa_stream_out *active_output;
+    bool mic_mute;
+};
+
+struct alsa_stream_out {
+    struct audio_stream_out stream;
+    struct alsa_audio_device *dev;
+
+    pthread_mutex_t lock;   /* see note below on mutex acquisition order */
+    snd_pcm_t *pcm;
+
+    snd_pcm_uframes_t period_size;
+    unsigned int periods;
+    snd_pcm_uframes_t buffer_size;
+
+    bool unavailable;
+    int standby;
+    snd_pcm_uframes_t written;
+};
+
+static void get_alsa_device_name(char *name) {
+    char hdmiDevice[PROPERTY_VALUE_MAX];
+    property_get("persist.audio.hdmi.device", hdmiDevice, "vc4hdmi0");
+
+    // use card configured in vc4-hdmi.conf to get IEC958 subframe conversion
+    sprintf(name, "default:CARD=%s", hdmiDevice);
+}
+
+/* must be called with hw device and output stream mutexes locked */
+static int start_output_stream(struct alsa_stream_out *out)
+{
+    struct alsa_audio_device *adev = out->dev;
+
+    if (out->unavailable)
+        return -ENODEV;
+
+    char device_name[PROPERTY_VALUE_MAX];
+    get_alsa_device_name(device_name);
+    ALOGI("start_output_stream: %s", device_name);
+
+    int r;
+    snd_pcm_t *pcm;
+
+    if ((r = snd_pcm_open(&pcm, device_name, SND_PCM_STREAM_PLAYBACK, 0) < 0)) {
+        ALOGE("cannot open pcm_out driver: %s", snd_strerror(r));
+        adev->active_output = NULL;
+        out->unavailable = true;
+        return -ENODEV;
+    }
+    out->pcm = pcm;
+
+    snd_pcm_hw_params_t *hwp;
+    snd_pcm_hw_params_alloca(&hwp);
+    snd_pcm_hw_params_any(pcm, hwp);
+    snd_pcm_hw_params_set_access(pcm, hwp, SND_PCM_ACCESS_RW_INTERLEAVED);
+    snd_pcm_hw_params_set_format(pcm, hwp, SND_PCM_FORMAT_S16_LE);
+    snd_pcm_hw_params_set_rate(pcm, hwp, CODEC_SAMPLING_RATE, 0);
+    snd_pcm_hw_params_set_channels(pcm, hwp, CHANNEL_STEREO);
+
+    // Configurue period_size, periods and buffer_size
+    int dir = 0;
+    out->period_size = PERIOD_SIZE;
+    if ((r = snd_pcm_hw_params_set_period_size_near(pcm, hwp, &out->period_size, &dir)) < 0) {
+        ALOGE("cannot snd_pcm_hw_params_set_period_size_near: %s", snd_strerror(r));
+        adev->active_output = NULL;
+        out->unavailable = true;
+        return -ENODEV;
+    }
+    dir = 0;
+    out->periods = PLAYBACK_PERIOD_COUNT;
+    if ((r = snd_pcm_hw_params_set_periods_near(pcm, hwp, &out->periods, &dir)) < 0) {
+        ALOGE("cannot snd_pcm_hw_params_set_periods_near: %s", snd_strerror(r));
+        adev->active_output = NULL;
+        out->unavailable = true;
+        return -ENODEV;
+    }
+    out->buffer_size = out->period_size * out->periods;
+    if ((r = snd_pcm_hw_params_set_buffer_size_near(pcm, hwp, &out->buffer_size)) < 0) {
+        ALOGE("cannot snd_pcm_hw_params_set_buffer_size_near: %s", snd_strerror(r));
+        adev->active_output = NULL;
+        out->unavailable = true;
+        return -ENODEV;
+    }
+
+    //write the hw params
+    if ((r = snd_pcm_hw_params(pcm, hwp)) < 0) {
+        ALOGE("cannot snd_pcm_hw_params: %s", snd_strerror(r));
+        adev->active_output = NULL;
+        out->unavailable = true;
+        return -ENODEV;
+    }
+
+    //Software parameters
+    snd_pcm_sw_params_t *swp;
+    snd_pcm_sw_params_alloca(&swp);
+    snd_pcm_sw_params_current(pcm, swp);
+
+    // set avail_min to period_size
+    if ((r = snd_pcm_sw_params_set_avail_min(pcm, swp, out->period_size)) < 0) {
+        ALOGE("cannot snd_pcm_sw_params_set_avail_min: %s", snd_strerror(r));
+        adev->active_output = NULL;
+        out->unavailable = true;
+        return -ENODEV;
+    }
+    // set start_threshold to period_size * PLAYBACK_PERIOD_START_THRESHOLD
+    if ((r = snd_pcm_sw_params_set_start_threshold(pcm, swp, out->period_size * PLAYBACK_PERIOD_START_THRESHOLD)) < 0) {
+        ALOGE("cannot snd_pcm_sw_params_set_start_threshold: %s", snd_strerror(r));
+        adev->active_output = NULL;
+        out->unavailable = true;
+        return -ENODEV;
+    }
+    //write the sw params
+    if ((r = snd_pcm_sw_params(pcm, swp)) < 0) {
+        ALOGE("cannot snd_pcm_sw_params: %s", snd_strerror(r));
+        adev->active_output = NULL;
+        out->unavailable = true;
+        return -ENODEV;
+    }
+
+    // prepare
+    if ((r = snd_pcm_prepare(pcm)) < 0) {
+        ALOGE("cannot snd_pcm_prepare: %s", snd_strerror(r));
+        adev->active_output = NULL;
+        out->unavailable = true;
+        return -ENODEV;
+    }
+
+    adev->active_output = out;
+    return 0;
+}
+
+static uint32_t out_get_sample_rate(const struct audio_stream *stream)
+{
+    ALOGV("out_get_sample_rate: %d", CODEC_SAMPLING_RATE);
+    return CODEC_SAMPLING_RATE;
+}
+
+static int out_set_sample_rate(struct audio_stream *stream, uint32_t rate)
+{
+    ALOGV("out_set_sample_rate: %d", 0);
+    return -ENOSYS;
+}
+
+static size_t out_get_buffer_size(const struct audio_stream *stream)
+{
+    struct alsa_stream_out *out = (struct alsa_stream_out *)stream;
+
+    /* return the closest majoring multiple of 16 frames, as
+     * audioflinger expects audio buffers to be a multiple of 16 frames */
+    size_t size = out->period_size;
+    size = ((size + 15) / 16) * 16;
+    ALOGV("out_get_buffer_size: %ld", (long int)size);
+    return size * audio_stream_out_frame_size((struct audio_stream_out *)stream);
+}
+
+static audio_channel_mask_t out_get_channels(const struct audio_stream *stream)
+{
+    ALOGV("out_get_channels: %d", CHANNEL_STEREO);
+    return audio_channel_out_mask_from_count(CHANNEL_STEREO);
+}
+
+static audio_format_t out_get_format(const struct audio_stream *stream)
+{
+    ALOGV("out_get_format: %d", AUDIO_FORMAT_PCM_16_BIT);
+    return AUDIO_FORMAT_PCM_16_BIT;
+}
+
+static int out_set_format(struct audio_stream *stream, audio_format_t format)
+{
+    ALOGV("out_set_format: %d",format);
+    return -ENOSYS;
+}
+
+static int do_output_standby(struct alsa_stream_out *out)
+{
+    struct alsa_audio_device *adev = out->dev;
+
+    if (!out->standby) {
+        snd_pcm_close(out->pcm);
+        out->pcm = NULL;
+        adev->active_output = NULL;
+        out->standby = 1;
+    }
+    return 0;
+}
+
+static int out_standby(struct audio_stream *stream)
+{
+    ALOGV("out_standby");
+    struct alsa_stream_out *out = (struct alsa_stream_out *)stream;
+    int status;
+
+    pthread_mutex_lock(&out->dev->lock);
+    pthread_mutex_lock(&out->lock);
+    status = do_output_standby(out);
+    pthread_mutex_unlock(&out->lock);
+    pthread_mutex_unlock(&out->dev->lock);
+    return status;
+}
+
+static int out_dump(const struct audio_stream *stream, int fd)
+{
+    ALOGV("out_dump");
+    return 0;
+}
+
+static int out_set_parameters(struct audio_stream *stream, const char *kvpairs)
+{
+    ALOGV("out_set_parameters");
+    struct alsa_stream_out *out = (struct alsa_stream_out *)stream;
+    struct alsa_audio_device *adev = out->dev;
+    struct str_parms *parms;
+    char value[32];
+    int val = 0;
+    int ret = -EINVAL;
+
+    if (kvpairs == NULL || kvpairs[0] == 0) {
+        return 0;
+    }
+
+    parms = str_parms_create_str(kvpairs);
+
+    if (str_parms_get_str(parms, AUDIO_PARAMETER_STREAM_ROUTING, value, sizeof(value)) >= 0) {
+        val = atoi(value);
+        pthread_mutex_lock(&adev->lock);
+        pthread_mutex_lock(&out->lock);
+        if (((adev->devices & AUDIO_DEVICE_OUT_ALL) != val) && (val != 0)) {
+            adev->devices &= ~AUDIO_DEVICE_OUT_ALL;
+            adev->devices |= val;
+        }
+        pthread_mutex_unlock(&out->lock);
+        pthread_mutex_unlock(&adev->lock);
+        ret = 0;
+    }
+
+    str_parms_destroy(parms);
+    return ret;
+}
+
+static char * out_get_parameters(const struct audio_stream *stream, const char *keys)
+{
+    ALOGV("out_get_parameters");
+    return strdup("");
+}
+
+static uint32_t out_get_latency(const struct audio_stream_out *stream)
+{
+    ALOGV("out_get_latency");
+    struct alsa_stream_out *out = (struct alsa_stream_out *)stream;
+    // latency = buffer_size / rate
+    return (out->buffer_size * 1000) / CODEC_SAMPLING_RATE;
+}
+
+static int out_set_volume(struct audio_stream_out *stream, float left,
+        float right)
+{
+    ALOGV("out_set_volume: Left:%f Right:%f", left, right);
+    return 0;
+}
+
+static ssize_t out_write(struct audio_stream_out *stream, const void* buffer,
+        size_t bytes)
+{
+    int ret;
+    struct alsa_stream_out *out = (struct alsa_stream_out *)stream;
+    struct alsa_audio_device *adev = out->dev;
+    size_t frame_size = audio_stream_out_frame_size(stream);
+    snd_pcm_uframes_t out_frames = bytes / frame_size;
+
+    /* acquiring hw device mutex systematically is useful if a low priority thread is waiting
+     * on the output stream mutex - e.g. executing select_mode() while holding the hw device
+     * mutex
+     */
+    pthread_mutex_lock(&adev->lock);
+    pthread_mutex_lock(&out->lock);
+    if (out->standby) {
+        ret = start_output_stream(out);
+        if (ret != 0) {
+            pthread_mutex_unlock(&adev->lock);
+            goto exit;
+        }
+        out->standby = 0;
+    }
+
+    pthread_mutex_unlock(&adev->lock);
+
+    ALOGV("out_write: out_frames:%ld", (long int)out_frames);
+
+    ret = snd_pcm_writei(out->pcm, buffer, out_frames);
+    if (ret == out_frames) {
+        out->written += out_frames;
+    }
+exit:
+    pthread_mutex_unlock(&out->lock);
+
+    if (ret != out_frames) {
+        if (ret == -EPIPE) {
+            ALOGE("underrun deteced -> redo snd_pcm_prepare");
+            snd_pcm_prepare(out->pcm);
+        } else {
+            ALOGE("out_write err: %s", snd_strerror(ret));
+            usleep((int64_t)bytes * 1000000 / audio_stream_out_frame_size(stream) /
+                out_get_sample_rate(&stream->common));
+        }
+    }
+
+    return bytes;
+}
+
+static int out_get_render_position(const struct audio_stream_out *stream,
+        uint32_t *dsp_frames)
+{
+    *dsp_frames = 0;
+    ALOGV("out_get_render_position: dsp_frames: %p", dsp_frames);
+    return -EINVAL;
+}
+
+static int out_get_presentation_position(const struct audio_stream_out *stream,
+                                   uint64_t *frames, struct timespec *timestamp)
+{
+    struct alsa_stream_out *out = (struct alsa_stream_out *)stream;
+    int ret = -1;
+
+    if (out->pcm) {
+        snd_pcm_uframes_t avail;
+        int r;
+        if ((r = snd_pcm_htimestamp(out->pcm, &avail, timestamp)) == 0) {
+            int64_t signed_frames = (int64_t)(out->written) - out->buffer_size + avail;
+            if (signed_frames >= 0) {
+                *frames = signed_frames;
+                ret = 0;
+            }
+            ALOGV("out_get_presentation_position: %ld", (long int)(*frames));
+        } else {
+            ALOGE("out_get_presentation_position: err: %s", snd_strerror(r));
+        }
+    } else {
+        ALOGV("out_get_presentation_position: stream in standby");
+    }
+    return ret;
+}
+
+
+static int out_add_audio_effect(const struct audio_stream *stream, effect_handle_t effect)
+{
+    ALOGV("out_add_audio_effect: %p", effect);
+    return 0;
+}
+
+static int out_remove_audio_effect(const struct audio_stream *stream, effect_handle_t effect)
+{
+    ALOGV("out_remove_audio_effect: %p", effect);
+    return 0;
+}
+
+static int out_get_next_write_timestamp(const struct audio_stream_out *stream,
+        int64_t *timestamp)
+{
+    *timestamp = 0;
+    ALOGV("out_get_next_write_timestamp: %ld", (long int)(*timestamp));
+    return -EINVAL;
+}
+
+/** audio_stream_in implementation **/
+static uint32_t in_get_sample_rate(const struct audio_stream *stream)
+{
+    ALOGV("in_get_sample_rate");
+    return 8000;
+}
+
+static int in_set_sample_rate(struct audio_stream *stream, uint32_t rate)
+{
+    ALOGV("in_set_sample_rate: %d", rate);
+    return -ENOSYS;
+}
+
+static size_t in_get_buffer_size(const struct audio_stream *stream)
+{
+    ALOGV("in_get_buffer_size: %d", 320);
+    return 320;
+}
+
+static audio_channel_mask_t in_get_channels(const struct audio_stream *stream)
+{
+    ALOGV("in_get_channels: %d", AUDIO_CHANNEL_IN_MONO);
+    return AUDIO_CHANNEL_IN_MONO;
+}
+
+static audio_format_t in_get_format(const struct audio_stream *stream)
+{
+    return AUDIO_FORMAT_PCM_16_BIT;
+}
+
+static int in_set_format(struct audio_stream *stream, audio_format_t format)
+{
+    return -ENOSYS;
+}
+
+static int in_standby(struct audio_stream *stream)
+{
+    return 0;
+}
+
+static int in_dump(const struct audio_stream *stream, int fd)
+{
+    return 0;
+}
+
+static int in_set_parameters(struct audio_stream *stream, const char *kvpairs)
+{
+    return 0;
+}
+
+static char * in_get_parameters(const struct audio_stream *stream,
+        const char *keys)
+{
+    return strdup("");
+}
+
+static int in_set_gain(struct audio_stream_in *stream, float gain)
+{
+    return 0;
+}
+
+static ssize_t in_read(struct audio_stream_in *stream, void* buffer,
+        size_t bytes)
+{
+    ALOGV("in_read: bytes %zu", bytes);
+    /* XXX: fake timing for audio input */
+    usleep((int64_t)bytes * 1000000 / audio_stream_in_frame_size(stream) /
+            in_get_sample_rate(&stream->common));
+    memset(buffer, 0, bytes);
+    return bytes;
+}
+
+static uint32_t in_get_input_frames_lost(struct audio_stream_in *stream)
+{
+    return 0;
+}
+
+static int in_add_audio_effect(const struct audio_stream *stream, effect_handle_t effect)
+{
+    return 0;
+}
+
+static int in_remove_audio_effect(const struct audio_stream *stream, effect_handle_t effect)
+{
+    return 0;
+}
+
+static int adev_open_output_stream(struct audio_hw_device *dev,
+        audio_io_handle_t handle,
+        audio_devices_t devices,
+        audio_output_flags_t flags,
+        struct audio_config *config,
+        struct audio_stream_out **stream_out,
+        const char *address __unused)
+{
+    ALOGV("adev_open_output_stream...");
+
+    struct alsa_audio_device *ladev = (struct alsa_audio_device *)dev;
+    struct alsa_stream_out *out;
+    int ret = 0;
+
+    out = (struct alsa_stream_out *)calloc(1, sizeof(struct alsa_stream_out));
+    if (!out)
+        return -ENOMEM;
+
+    out->stream.common.get_sample_rate = out_get_sample_rate;
+    out->stream.common.set_sample_rate = out_set_sample_rate;
+    out->stream.common.get_buffer_size = out_get_buffer_size;
+    out->stream.common.get_channels = out_get_channels;
+    out->stream.common.get_format = out_get_format;
+    out->stream.common.set_format = out_set_format;
+    out->stream.common.standby = out_standby;
+    out->stream.common.dump = out_dump;
+    out->stream.common.set_parameters = out_set_parameters;
+    out->stream.common.get_parameters = out_get_parameters;
+    out->stream.common.add_audio_effect = out_add_audio_effect;
+    out->stream.common.remove_audio_effect = out_remove_audio_effect;
+    out->stream.get_latency = out_get_latency;
+    out->stream.set_volume = out_set_volume;
+    out->stream.write = out_write;
+    out->stream.get_render_position = out_get_render_position;
+    out->stream.get_next_write_timestamp = out_get_next_write_timestamp;
+    out->stream.get_presentation_position = out_get_presentation_position;
+
+    out->period_size = PERIOD_SIZE;
+    out->periods = PLAYBACK_PERIOD_COUNT;
+    out->buffer_size = out->period_size * out->periods;
+
+    out->dev = ladev;
+    out->standby = 1;
+    out->unavailable = false;
+
+    config->format = out_get_format(&out->stream.common);
+    config->channel_mask = out_get_channels(&out->stream.common);
+    config->sample_rate = out_get_sample_rate(&out->stream.common);
+
+    *stream_out = &out->stream;
+
+    /* TODO The retry mechanism isn't implemented in AudioPolicyManager/AudioFlinger. */
+    ret = 0;
+
+    return ret;
+}
+
+static void adev_close_output_stream(struct audio_hw_device *dev,
+        struct audio_stream_out *stream)
+{
+    ALOGV("adev_close_output_stream...");
+    free(stream);
+}
+
+static int adev_set_parameters(struct audio_hw_device *dev, const char *kvpairs)
+{
+    ALOGV("adev_set_parameters");
+    return -ENOSYS;
+}
+
+static char * adev_get_parameters(const struct audio_hw_device *dev,
+        const char *keys)
+{
+    ALOGV("adev_get_parameters");
+    return strdup("");
+}
+
+static int adev_init_check(const struct audio_hw_device *dev)
+{
+    ALOGV("adev_init_check");
+    return 0;
+}
+
+static int adev_set_voice_volume(struct audio_hw_device *dev, float volume)
+{
+    ALOGV("adev_set_voice_volume: %f", volume);
+    return -ENOSYS;
+}
+
+static int adev_set_master_volume(struct audio_hw_device *dev, float volume)
+{
+    ALOGV("adev_set_master_volume: %f", volume);
+    return -ENOSYS;
+}
+
+static int adev_get_master_volume(struct audio_hw_device *dev, float *volume)
+{
+    ALOGV("adev_get_master_volume: %f", *volume);
+    return -ENOSYS;
+}
+
+static int adev_set_master_mute(struct audio_hw_device *dev, bool muted)
+{
+    ALOGV("adev_set_master_mute: %d", muted);
+    return -ENOSYS;
+}
+
+static int adev_get_master_mute(struct audio_hw_device *dev, bool *muted)
+{
+    ALOGV("adev_get_master_mute: %d", *muted);
+    return -ENOSYS;
+}
+
+static int adev_set_mode(struct audio_hw_device *dev, audio_mode_t mode)
+{
+    ALOGV("adev_set_mode: %d", mode);
+    return 0;
+}
+
+static int adev_set_mic_mute(struct audio_hw_device *dev, bool state)
+{
+    ALOGV("adev_set_mic_mute: %d",state);
+    return -ENOSYS;
+}
+
+static int adev_get_mic_mute(const struct audio_hw_device *dev, bool *state)
+{
+    ALOGV("adev_get_mic_mute");
+    return -ENOSYS;
+}
+
+static size_t adev_get_input_buffer_size(const struct audio_hw_device *dev,
+        const struct audio_config *config)
+{
+    ALOGV("adev_get_input_buffer_size: %d", 320);
+    return 320;
+}
+
+static int adev_open_input_stream(struct audio_hw_device __unused *dev,
+        audio_io_handle_t handle,
+        audio_devices_t devices,
+        struct audio_config *config,
+        struct audio_stream_in **stream_in,
+        audio_input_flags_t flags __unused,
+        const char *address __unused,
+        audio_source_t source __unused)
+{
+    struct stub_stream_in *in;
+
+    ALOGV("adev_open_input_stream...");
+
+    in = (struct stub_stream_in *)calloc(1, sizeof(struct stub_stream_in));
+    if (!in)
+        return -ENOMEM;
+
+    in->stream.common.get_sample_rate = in_get_sample_rate;
+    in->stream.common.set_sample_rate = in_set_sample_rate;
+    in->stream.common.get_buffer_size = in_get_buffer_size;
+    in->stream.common.get_channels = in_get_channels;
+    in->stream.common.get_format = in_get_format;
+    in->stream.common.set_format = in_set_format;
+    in->stream.common.standby = in_standby;
+    in->stream.common.dump = in_dump;
+    in->stream.common.set_parameters = in_set_parameters;
+    in->stream.common.get_parameters = in_get_parameters;
+    in->stream.common.add_audio_effect = in_add_audio_effect;
+    in->stream.common.remove_audio_effect = in_remove_audio_effect;
+    in->stream.set_gain = in_set_gain;
+    in->stream.read = in_read;
+    in->stream.get_input_frames_lost = in_get_input_frames_lost;
+
+    *stream_in = &in->stream;
+    return 0;
+}
+
+static void adev_close_input_stream(struct audio_hw_device *dev,
+        struct audio_stream_in *in)
+{
+    ALOGV("adev_close_input_stream...");
+    return;
+}
+
+static int adev_dump(const audio_hw_device_t *device, int fd)
+{
+    ALOGV("adev_dump");
+    return 0;
+}
+
+static int adev_close(hw_device_t *device)
+{
+    ALOGV("adev_close");
+    free(device);
+    return 0;
+}
+
+static int adev_open(const hw_module_t* module, const char* name,
+        hw_device_t** device)
+{
+    struct alsa_audio_device *adev;
+
+    ALOGV("adev_open: %s", name);
+
+    if (strcmp(name, AUDIO_HARDWARE_INTERFACE) != 0)
+        return -EINVAL;
+
+    adev = calloc(1, sizeof(struct alsa_audio_device));
+    if (!adev)
+        return -ENOMEM;
+
+    adev->hw_device.common.tag = HARDWARE_DEVICE_TAG;
+    adev->hw_device.common.version = AUDIO_DEVICE_API_VERSION_2_0;
+    adev->hw_device.common.module = (struct hw_module_t *) module;
+    adev->hw_device.common.close = adev_close;
+    adev->hw_device.init_check = adev_init_check;
+    adev->hw_device.set_voice_volume = adev_set_voice_volume;
+    adev->hw_device.set_master_volume = adev_set_master_volume;
+    adev->hw_device.get_master_volume = adev_get_master_volume;
+    adev->hw_device.set_master_mute = adev_set_master_mute;
+    adev->hw_device.get_master_mute = adev_get_master_mute;
+    adev->hw_device.set_mode = adev_set_mode;
+    adev->hw_device.set_mic_mute = adev_set_mic_mute;
+    adev->hw_device.get_mic_mute = adev_get_mic_mute;
+    adev->hw_device.set_parameters = adev_set_parameters;
+    adev->hw_device.get_parameters = adev_get_parameters;
+    adev->hw_device.get_input_buffer_size = adev_get_input_buffer_size;
+    adev->hw_device.open_output_stream = adev_open_output_stream;
+    adev->hw_device.close_output_stream = adev_close_output_stream;
+    adev->hw_device.open_input_stream = adev_open_input_stream;
+    adev->hw_device.close_input_stream = adev_close_input_stream;
+    adev->hw_device.dump = adev_dump;
+
+    adev->devices = AUDIO_DEVICE_NONE;
+
+    *device = &adev->hw_device.common;
+
+    return 0;
+}
+
+static struct hw_module_methods_t hal_module_methods = {
+    .open = adev_open,
+};
+
+struct audio_module HAL_MODULE_INFO_SYM = {
+    .common = {
+        .tag = HARDWARE_MODULE_TAG,
+        .module_api_version = AUDIO_MODULE_API_VERSION_0_1,
+        .hal_api_version = HARDWARE_HAL_API_VERSION,
+        .id = AUDIO_HARDWARE_MODULE_ID,
+        .name = "Raspberry Pi audio hdmi HW HAL",
+        .author = "The Android Open Source Project",
+        .methods = &hal_module_methods,
+    },
+};

audio/vc4-hdmi.conf

@@ -1,68 +0,0 @@
-# Configuration for the VC4-HDMI sound card using software IEC958
-# subframe conversion
-
-<confdir:pcm/hdmi.conf>
-vc4-hdmi.pcm.hdmi.0 {
-	@args [ CARD AES0 AES1 AES2 AES3 ]
-	@args.CARD {
-		type string
-	}
-	@args.AES0 {
-		type integer
-	}
-	@args.AES1 {
-		type integer
-	}
-	@args.AES2 {
-		type integer
-	}
-	@args.AES3 {
-		type integer
-	}
-	type iec958
-	slave {
-		format IEC958_SUBFRAME_LE
-		pcm {
-			type hooks
-			slave.pcm {
-				type hw
-				card $CARD
-				device 0
-			}
-			hooks.0 {
-				type ctl_elems
-				hook_args [
-				{
-					name "IEC958 Playback Default"
-					interface PCM
-					optional true
-					lock true
-					preserve true
-					value [ $AES0 $AES1 $AES2 $AES3 ]
-				}
-				]
-			}
-		}
-	}
-	status [ $AES0 $AES1 $AES2 $AES3 ]
-}
-
-# default with plug
-vc4-hdmi.pcm.default {
-	@args [ CARD ]
-	@args.CARD {
-		type string
-	}
-	type plug
-	slave.pcm {
-		type softvol
-		slave.pcm {
-			@func concat
-			strings [ "hdmi:" $CARD ]
-		}
-		control {
-			name "PCM Playback Volume"
-			card $CARD
-		}
-	}
-}

boot/config.txt

@@ -21,7 +21,7 @@ disable_overscan=1
 
 # Graphics acceleration
 dtoverlay=vc4-kms-v3d
-dtoverlay=cma,cma-384
+dtoverlay=cma,cma-512
 
 # I2C
 #dtparam=i2c_arm=on
@@ -42,4 +42,4 @@ dtoverlay=dwc2,dr_mode=otg
 [all]
 
 # V4L2
-#dtoverlay=rpivid-v4l2
+dtoverlay=rpivid-v4l2

cec/Android.bp

@@ -0,0 +1,17 @@
+// Copyright (C) 2019 The Android Open-Source Project
+// Copyright (C) 2021-2022 KonstaKANG
+//
+// SPDX-License-Identifier: Apache-2.0
+
+cc_library_shared {
+    name: "hdmi_cec.rpi",
+    relative_install_path: "hw",
+    proprietary: true,
+    srcs: ["hdmi_cec.c"],
+    cflags: ["-Werror"],
+    shared_libs: [
+        "liblog",
+        "libcutils",
+        "libhardware",
+    ],
+}

cec/hdmi_cec.c

@@ -0,0 +1,616 @@
+/*
+ * Copyright (C) 2019 BayLibre, SAS.
+ * Copyright (C) 2021-2022 KonstaKANG
+ *
+ * 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.
+ */
+
+#define LOG_TAG "hdmi_cec"
+
+#include <stdint.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <pthread.h>
+
+#include <sys/ioctl.h>
+#include <sys/types.h>
+
+#include <poll.h>
+#include <sys/socket.h>
+#include <linux/netlink.h>
+#include <linux/cec.h>
+#include <sys/eventfd.h>
+
+#include <log/log.h>
+#include <cutils/properties.h>
+#include <hardware/hdmi_cec.h>
+
+typedef struct hdmicec_context
+{
+    hdmi_cec_device_t device; /* must be first */
+    int cec_fd;
+    unsigned int vendor_id;
+    unsigned int type;
+    unsigned int version;
+    struct hdmi_port_info port_info;
+    event_callback_t p_event_cb;
+    void *cb_arg;
+    pthread_t thread;
+    int exit_fd;
+    pthread_mutex_t options_lock;
+    bool cec_enabled;
+    bool cec_control_enabled;
+} hdmicec_context_t;
+
+static int hdmicec_add_logical_address(const struct hdmi_cec_device *dev, cec_logical_address_t addr)
+{
+    struct hdmicec_context *ctx = (struct hdmicec_context *)dev;
+    unsigned int la_type = CEC_LOG_ADDR_TYPE_UNREGISTERED;
+    unsigned int all_dev_types = 0;
+    unsigned int prim_type = 0xff;
+    struct cec_log_addrs laddrs;
+    int ret;
+
+    ALOGD("%s: addr:%x\n", __func__, addr);
+
+    if (addr >= CEC_ADDR_BROADCAST)
+        return -1;
+
+    ret = ioctl(ctx->cec_fd, CEC_ADAP_G_LOG_ADDRS, &laddrs);
+    if (ret)
+        return ret;
+    memset(&laddrs, 0, sizeof(laddrs));
+
+    laddrs.cec_version = ctx->version;
+    laddrs.vendor_id = ctx->vendor_id;
+
+    switch (addr) {
+        case CEC_LOG_ADDR_TV:
+            prim_type = CEC_OP_PRIM_DEVTYPE_TV;
+            la_type = CEC_LOG_ADDR_TYPE_TV;
+            all_dev_types = CEC_OP_ALL_DEVTYPE_TV;
+            break;
+        case CEC_LOG_ADDR_RECORD_1:
+        case CEC_LOG_ADDR_RECORD_2:
+        case CEC_LOG_ADDR_RECORD_3:
+            prim_type = CEC_OP_PRIM_DEVTYPE_RECORD;
+            la_type = CEC_LOG_ADDR_TYPE_RECORD;
+            all_dev_types = CEC_OP_ALL_DEVTYPE_RECORD;
+            break;
+        case CEC_LOG_ADDR_TUNER_1:
+        case CEC_LOG_ADDR_TUNER_2:
+        case CEC_LOG_ADDR_TUNER_3:
+        case CEC_LOG_ADDR_TUNER_4:
+            prim_type = CEC_OP_PRIM_DEVTYPE_TUNER;
+            la_type = CEC_LOG_ADDR_TYPE_TUNER;
+            all_dev_types = CEC_OP_ALL_DEVTYPE_TUNER;
+            break;
+        case CEC_LOG_ADDR_PLAYBACK_1:
+        case CEC_LOG_ADDR_PLAYBACK_2:
+        case CEC_LOG_ADDR_PLAYBACK_3:
+            prim_type = CEC_OP_PRIM_DEVTYPE_PLAYBACK;
+            la_type = CEC_LOG_ADDR_TYPE_PLAYBACK;
+            all_dev_types = CEC_OP_ALL_DEVTYPE_PLAYBACK;
+            laddrs.flags = CEC_LOG_ADDRS_FL_ALLOW_RC_PASSTHRU;
+            break;
+        case CEC_LOG_ADDR_AUDIOSYSTEM:
+            prim_type = CEC_OP_PRIM_DEVTYPE_AUDIOSYSTEM;
+            la_type = CEC_LOG_ADDR_TYPE_AUDIOSYSTEM;
+            all_dev_types = CEC_OP_ALL_DEVTYPE_AUDIOSYSTEM;
+            break;
+        case CEC_LOG_ADDR_SPECIFIC:
+            prim_type = CEC_OP_PRIM_DEVTYPE_PROCESSOR;
+            la_type = CEC_LOG_ADDR_TYPE_SPECIFIC;
+            all_dev_types = CEC_OP_ALL_DEVTYPE_SWITCH;
+            break;
+        case CEC_ADDR_RESERVED_1:
+        case CEC_ADDR_RESERVED_2:
+        case CEC_ADDR_UNREGISTERED:
+            laddrs.flags = CEC_LOG_ADDRS_FL_ALLOW_UNREG_FALLBACK;
+            break;
+    }
+
+    laddrs.num_log_addrs = 1;
+    laddrs.log_addr[0] = addr;
+    laddrs.log_addr_type[0] = la_type;
+    laddrs.primary_device_type[0] = prim_type;
+    laddrs.all_device_types[0] = all_dev_types;
+    laddrs.features[0][0] = 0;
+    laddrs.features[0][1] = 0;
+
+    ret = ioctl(ctx->cec_fd, CEC_ADAP_S_LOG_ADDRS, &laddrs);
+    if (ret) {
+        ALOGD("%s: %m\n", __func__);
+        return ret;
+    }
+
+    ALOGD("%s: log_addr_mask=%x\n", __func__,  laddrs.log_addr_mask);
+
+    return 0;
+}
+
+static void hdmicec_clear_logical_address(const struct hdmi_cec_device *dev)
+{
+    struct hdmicec_context *ctx = (struct hdmicec_context *)dev;
+    struct cec_log_addrs laddrs;
+    int ret;
+
+    memset(&laddrs, 0, sizeof(laddrs));
+    ret = ioctl(ctx->cec_fd, CEC_ADAP_S_LOG_ADDRS, &laddrs);
+    if (ret)
+        ALOGD("%s: %m\n", __func__);
+}
+
+static int hdmicec_get_physical_address(const struct hdmi_cec_device *dev, uint16_t *addr)
+{
+    struct hdmicec_context *ctx = (struct hdmicec_context *)dev;
+    int ret = ioctl(ctx->cec_fd, CEC_ADAP_G_PHYS_ADDR, addr);
+    if (ret)
+        ALOGD("%s: %m\n", __func__);
+
+    return ret;
+}
+
+static int hdmicec_send_message(const struct hdmi_cec_device *dev, const cec_message_t *msg)
+{
+    struct hdmicec_context *ctx = (struct hdmicec_context *)dev;
+    struct cec_msg cec_msg;
+    int ret;
+
+    pthread_mutex_lock(&ctx->options_lock);
+    bool cec_enabled = ctx->cec_enabled;
+    pthread_mutex_unlock(&ctx->options_lock);
+    if (!cec_enabled) {
+        return HDMI_RESULT_FAIL;
+    }
+
+    ALOGD("%s: len=%u\n", __func__, (unsigned int)msg->length);
+
+    memset(&cec_msg, 0, sizeof(cec_msg));
+    cec_msg.msg[0] = (msg->initiator << 4) | msg->destination;
+
+    memcpy(&cec_msg.msg[1], msg->body, msg->length);
+    cec_msg.len = msg->length + 1;
+
+    ret = ioctl(ctx->cec_fd, CEC_TRANSMIT, &cec_msg);
+    if (ret) {
+        ALOGD("%s: %m\n", __func__);
+        return HDMI_RESULT_FAIL;
+    }
+
+    if (cec_msg.tx_status != CEC_TX_STATUS_OK)
+        ALOGD("%s: tx_status=%d\n", __func__, cec_msg.tx_status);
+
+    switch (cec_msg.tx_status) {
+        case CEC_TX_STATUS_OK:
+            return HDMI_RESULT_SUCCESS;
+        case CEC_TX_STATUS_ARB_LOST:
+            return HDMI_RESULT_BUSY;
+        case CEC_TX_STATUS_NACK:
+            return HDMI_RESULT_NACK;
+        default:
+            if (cec_msg.tx_status & CEC_TX_STATUS_NACK)
+                return HDMI_RESULT_NACK;
+            return HDMI_RESULT_FAIL;
+    }
+}
+
+static void hdmicec_register_event_callback(const struct hdmi_cec_device *dev,
+        event_callback_t callback, void *arg)
+{
+    struct hdmicec_context *ctx = (struct hdmicec_context *)dev;
+
+    ctx->p_event_cb = callback;
+    ctx->cb_arg = arg;
+}
+
+static void hdmicec_get_version(const struct hdmi_cec_device *dev, int *version)
+{
+    struct hdmicec_context *ctx = (struct hdmicec_context *)dev;
+
+    *version = ctx->version;
+}
+
+static void hdmicec_get_vendor_id(const struct hdmi_cec_device *dev, uint32_t *vendor_id)
+{
+    struct hdmicec_context *ctx = (struct hdmicec_context *)dev;
+
+    *vendor_id = ctx->vendor_id;
+}
+
+static void hdmicec_get_port_info(const struct hdmi_cec_device *dev,
+        struct hdmi_port_info *list[], int *total)
+{
+    struct hdmicec_context *ctx = (struct hdmicec_context *)dev;
+    int ret;
+
+    ret = ioctl(ctx->cec_fd, CEC_ADAP_G_PHYS_ADDR, &ctx->port_info.physical_address);
+    if (ret)
+        ALOGD("%s: %m\n", __func__);
+
+    ALOGD("type:%s, id:%d, cec support:%d, arc support:%d, physical address:%x",
+            ctx->port_info.type ? "output" : "input",
+            ctx->port_info.port_id,
+            ctx->port_info.cec_supported,
+            ctx->port_info.arc_supported,
+            ctx->port_info.physical_address);
+
+    *list = &ctx->port_info;
+    *total = 1;
+}
+
+static void hdmicec_set_option(const struct hdmi_cec_device *dev, int flag, int value)
+{
+    struct hdmicec_context* ctx = (struct hdmicec_context*)dev;
+    ALOGD("%s: flag=%d, value=%d", __func__, flag, value);
+    switch (flag) {
+        case HDMI_OPTION_ENABLE_CEC:
+            pthread_mutex_lock(&ctx->options_lock);
+            ctx->cec_enabled = (value == 1 ? true : false);
+            pthread_mutex_unlock(&ctx->options_lock);
+            break;
+        case HDMI_OPTION_WAKEUP:
+            // Not valid for playback devices
+            break;
+        case HDMI_OPTION_SYSTEM_CEC_CONTROL:
+            pthread_mutex_lock(&ctx->options_lock);
+            ctx->cec_control_enabled = (value == 1 ? true : false);
+            pthread_mutex_unlock(&ctx->options_lock);
+            break;
+    }
+}
+
+static int hdmicec_is_connected(const struct hdmi_cec_device *dev, int port_id)
+{
+    struct hdmicec_context *ctx = (struct hdmicec_context *)dev;
+    int ret;
+
+    (void)port_id;
+
+    ret = ioctl(ctx->cec_fd, CEC_ADAP_G_PHYS_ADDR,
+            &ctx->port_info.physical_address);
+    if (ret) {
+        ALOGD("%s: %m\n", __func__);
+        return ret;
+    }
+
+    if (ctx->port_info.physical_address == CEC_PHYS_ADDR_INVALID)
+        return false;
+
+    return true;
+}
+
+static int get_opcode(struct cec_msg* message) {
+    return (((uint8_t)message->msg[1]) & 0xff);
+}
+
+static int get_first_param(struct cec_msg* message) {
+    return (((uint8_t)message->msg[2]) & 0xff);
+}
+
+static bool is_power_ui_command(struct cec_msg* message) {
+    int ui_command = get_first_param(message);
+    switch (ui_command) {
+        case CEC_OP_UI_CMD_POWER:
+        case CEC_OP_UI_CMD_DEVICE_ROOT_MENU:
+        case CEC_OP_UI_CMD_POWER_ON_FUNCTION:
+            return true;
+        default:
+            return false;
+    }
+}
+
+static bool is_transferable_in_sleep(struct cec_msg* message) {
+    int opcode = get_opcode(message);
+    switch (opcode) {
+        case CEC_MESSAGE_ABORT:
+        case CEC_MESSAGE_DEVICE_VENDOR_ID:
+        case CEC_MESSAGE_GET_CEC_VERSION:
+        case CEC_MESSAGE_GET_MENU_LANGUAGE:
+        case CEC_MESSAGE_GIVE_DEVICE_POWER_STATUS:
+        case CEC_MESSAGE_GIVE_DEVICE_VENDOR_ID:
+        case CEC_MESSAGE_GIVE_OSD_NAME:
+        case CEC_MESSAGE_GIVE_PHYSICAL_ADDRESS:
+        case CEC_MESSAGE_REPORT_PHYSICAL_ADDRESS:
+        case CEC_MESSAGE_REPORT_POWER_STATUS:
+        case CEC_MESSAGE_SET_OSD_NAME:
+        case CEC_MESSAGE_DECK_CONTROL:
+        case CEC_MESSAGE_PLAY:
+            return true;
+        case CEC_MESSAGE_USER_CONTROL_PRESSED:
+            return is_power_ui_command(message);
+        default:
+            return false;
+    }
+}
+
+static void *event_thread(void *arg)
+{
+    struct hdmicec_context *ctx = (struct hdmicec_context *)arg;
+    int ret;
+    struct pollfd ufds[3] = {
+        { ctx->cec_fd, POLLIN, 0 },
+        { ctx->cec_fd, POLLERR, 0 },
+        { ctx->exit_fd, POLLIN, 0 },
+    };
+
+    ALOGI("%s start!", __func__);
+
+    while (1) {
+        ufds[0].revents = 0;
+        ufds[1].revents = 0;
+        ufds[2].revents = 0;
+
+        ret = poll(ufds, 3, -1);
+
+        if (ret <= 0)
+            continue;
+
+        if (ufds[2].revents == POLLIN)   /* Exit */
+            break;
+
+        if (ufds[1].revents == POLLERR) { /* CEC Event */
+            hdmi_event_t event = { };
+            struct cec_event ev;
+
+            ret = ioctl(ctx->cec_fd, CEC_DQEVENT, &ev);
+            if (ret)
+                continue;
+
+            pthread_mutex_lock(&ctx->options_lock);
+            bool cec_enabled = ctx->cec_enabled;
+            pthread_mutex_unlock(&ctx->options_lock);
+            if (!cec_enabled) {
+                continue;
+            }
+
+            if (ev.event == CEC_EVENT_STATE_CHANGE) {
+                event.type = HDMI_EVENT_HOT_PLUG;
+                event.dev = &ctx->device;
+                event.hotplug.port_id = 1;
+                if (ev.state_change.phys_addr == CEC_PHYS_ADDR_INVALID)
+                    event.hotplug.connected = false;
+                else
+                    event.hotplug.connected = true;
+
+                if (ctx->p_event_cb != NULL) {
+                    ctx->p_event_cb(&event, ctx->cb_arg);
+                } else {
+                    ALOGE("no event callback for hotplug\n");
+                }
+            }
+        }
+
+        if (ufds[0].revents == POLLIN) { /* CEC Driver */
+            struct cec_msg msg = { };
+            hdmi_event_t event = { };
+
+            ret = ioctl(ctx->cec_fd, CEC_RECEIVE, &msg);
+            if (ret) {
+                ALOGE("%s: CEC_RECEIVE error (%m)\n", __func__);
+                continue;
+            }
+
+            if (msg.rx_status != CEC_RX_STATUS_OK) {
+                ALOGD("%s: rx_status=%d\n", __func__, msg.rx_status);
+                continue;
+            }
+
+            pthread_mutex_lock(&ctx->options_lock);
+            bool cec_enabled = ctx->cec_enabled;
+            pthread_mutex_unlock(&ctx->options_lock);
+            if (!cec_enabled) {
+                continue;
+            }
+
+            pthread_mutex_lock(&ctx->options_lock);
+            bool cec_control_enabled = ctx->cec_control_enabled;
+            pthread_mutex_unlock(&ctx->options_lock);
+            if (!cec_control_enabled && !is_transferable_in_sleep(&msg)) {
+                ALOGD("%s: filter message in standby mode\n", __func__);
+                continue;
+            }
+
+            if (ctx->p_event_cb != NULL) {
+                event.type = HDMI_EVENT_CEC_MESSAGE;
+                event.dev = &ctx->device;
+                event.cec.initiator = msg.msg[0] >> 4;
+                event.cec.destination = msg.msg[0] & 0xf;
+                event.cec.length = msg.len - 1;
+                memcpy(event.cec.body, &msg.msg[1], msg.len - 1);
+
+                ctx->p_event_cb(&event, ctx->cb_arg);
+            } else {
+                ALOGE("no event callback for msg\n");
+            }
+        }
+    }
+
+    ALOGI("%s exit!", __func__);
+    return NULL;
+}
+
+static void hdmicec_set_arc(const struct hdmi_cec_device *dev, int port_id, int flag)
+{
+    (void)dev;
+    (void)port_id;
+    (void)flag;
+    /* Not supported */
+}
+
+static int hdmicec_close(struct hdmi_cec_device *dev)
+{
+    struct hdmicec_context *ctx = (struct hdmicec_context *)dev;
+    uint64_t tmp = 1;
+
+    ALOGD("%s\n", __func__);
+
+    if (ctx->exit_fd > 0) {
+        write(ctx->exit_fd, &tmp, sizeof(tmp));
+        pthread_join(ctx->thread, NULL);
+    }
+
+    if (ctx->cec_fd > 0)
+        close(ctx->cec_fd);
+    if (ctx->exit_fd > 0)
+        close(ctx->exit_fd);
+    free(ctx);
+
+    ctx->cec_enabled = false;
+    ctx->cec_control_enabled = false;
+    return 0;
+}
+
+static int cec_init(struct hdmicec_context *ctx)
+{
+    struct cec_log_addrs laddrs = {};
+    struct cec_caps caps = {};
+    uint32_t mode;
+    int ret;
+
+    // Ensure the CEC device supports required capabilities
+    ret = ioctl(ctx->cec_fd, CEC_ADAP_G_CAPS, &caps);
+    if (ret)
+        return ret;
+
+    if (!(caps.capabilities & (CEC_CAP_LOG_ADDRS |
+                    CEC_CAP_TRANSMIT |
+                    CEC_CAP_PASSTHROUGH))) {
+        ALOGE("%s: wrong cec adapter capabilities %x\n",
+                __func__, caps.capabilities);
+        return -1;
+    }
+
+    // This is an exclusive follower, in addition put the CEC device into passthrough mode
+    mode = CEC_MODE_INITIATOR | CEC_MODE_EXCL_FOLLOWER_PASSTHRU;
+    ret = ioctl(ctx->cec_fd, CEC_S_MODE, &mode);
+    if (ret)
+        return ret;
+
+    ctx->type = property_get_int32("ro.hdmi.device_type", CEC_DEVICE_PLAYBACK);
+
+    ctx->vendor_id = property_get_int32("ro.hdmi.vendor_id",
+            0x000c03 /* HDMI LLC vendor ID */);
+
+    ctx->version = property_get_bool("ro.hdmi.cec_version",
+            CEC_OP_CEC_VERSION_1_4);
+
+    ctx->port_info.type = ctx->type == CEC_DEVICE_TV ? HDMI_INPUT : HDMI_OUTPUT;
+    ctx->port_info.port_id = 1;
+    ctx->port_info.cec_supported = 1;
+    ctx->port_info.arc_supported = 0;
+
+    ALOGD("%s: type=%d\n", __func__, ctx->type);
+    ALOGD("%s: vendor_id=%04x\n", __func__, ctx->vendor_id);
+    ALOGD("%s: version=%d\n", __func__, ctx->version);
+
+    memset(&laddrs, 0, sizeof(laddrs));
+    ret = ioctl(ctx->cec_fd, CEC_ADAP_S_LOG_ADDRS, &laddrs);
+    if (ret)
+        return ret;
+
+    pthread_mutex_init(&ctx->options_lock, NULL);
+
+    ALOGD("%s: initialized CEC controller\n", __func__);
+
+    return ret;
+}
+
+static int open_hdmi_cec(const struct hw_module_t *module, const char *id,
+        struct hw_device_t **device)
+{
+    char path[32];
+    char prop[PROPERTY_VALUE_MAX];
+    hdmicec_context_t *ctx;
+    int ret;
+
+    ALOGD("%s: id=%s\n", __func__, id);
+
+    ctx = malloc(sizeof(struct hdmicec_context));
+    if (!ctx)
+        return -ENOMEM;
+
+    memset(ctx, 0, sizeof(*ctx));
+
+    property_get("ro.hdmi.cec_device", prop, "cec0");
+    snprintf(path, sizeof(path), "/dev/%s", prop);
+
+    ctx->cec_fd = open(path, O_RDWR);
+    if (ctx->cec_fd < 0) {
+        ALOGE("faild to open %s, ret=%s\n", path, strerror(errno));
+        goto fail;
+    }
+
+    ctx->exit_fd = eventfd(0, EFD_NONBLOCK);
+    if (ctx->exit_fd < 0) {
+        ALOGE("faild to open eventfd, ret = %d\n", errno);
+        goto fail;
+    }
+
+    ctx->device.common.tag = HARDWARE_DEVICE_TAG;
+    ctx->device.common.version = HDMI_CEC_DEVICE_API_VERSION_1_0;
+    ctx->device.common.module = (struct hw_module_t *)module;
+    ctx->device.common.close = (int (*)(struct hw_device_t* device))hdmicec_close;
+
+    ctx->device.add_logical_address = hdmicec_add_logical_address;
+    ctx->device.clear_logical_address = hdmicec_clear_logical_address;
+    ctx->device.get_physical_address = hdmicec_get_physical_address;
+    ctx->device.send_message = hdmicec_send_message;
+    ctx->device.register_event_callback = hdmicec_register_event_callback;
+    ctx->device.get_version = hdmicec_get_version;
+    ctx->device.get_vendor_id = hdmicec_get_vendor_id;
+    ctx->device.get_port_info = hdmicec_get_port_info;
+    ctx->device.set_option = hdmicec_set_option;
+    ctx->device.set_audio_return_channel = hdmicec_set_arc;
+    ctx->device.is_connected = hdmicec_is_connected;
+
+    /* init status */
+    ret = cec_init(ctx);
+    if (ret)
+        goto fail;
+
+    *device = &ctx->device.common;
+
+    /* thread loop for receiving cec msg */
+    if (pthread_create(&ctx->thread, NULL, event_thread, ctx)) {
+        ALOGE("Can't create event thread: %s\n", strerror(errno));
+        goto fail;
+    }
+
+    ctx->cec_enabled = true;
+    ctx->cec_control_enabled = true;
+    return 0;
+
+fail:
+    hdmicec_close((struct hdmi_cec_device *)ctx);
+    return -errno;
+}
+
+/* module method */
+static struct hw_module_methods_t hdmi_cec_module_methods = {
+    .open =  open_hdmi_cec,
+};
+
+/* hdmi_cec module */
+struct hw_module_t HAL_MODULE_INFO_SYM = {
+    .tag = HARDWARE_MODULE_TAG,
+    .version_major = 1,
+    .version_minor = 0,
+    .id = HDMI_CEC_HARDWARE_MODULE_ID,
+    .name = "Raspberry Pi HDMI CEC HAL",
+    .author = "The Android Open Source Project",
+    .methods = &hdmi_cec_module_methods,
+};

device.mk

@@ -25,6 +25,7 @@ PRODUCT_PACKAGES += \
     android.hardware.audio@7.0-impl \
     android.hardware.audio.effect@7.0-impl \
     audio.primary.rpi \
+    audio.primary.rpi_hdmi \
     audio.r_submix.default \
     audio.usb.default
 
@@ -50,9 +51,9 @@ PRODUCT_PACKAGES += \
     alsa_loop
 
 PRODUCT_COPY_FILES += \
-    $(DEVICE_PATH)/audio/vc4-hdmi.conf:$(TARGET_COPY_OUT_VENDOR)/etc/alsa/cards/vc4-hdmi.conf \
     external/alsa-lib/src/conf/alsa.conf:$(TARGET_COPY_OUT_VENDOR)/etc/alsa/alsa.conf \
     external/alsa-lib/src/conf/cards/aliases.conf:$(TARGET_COPY_OUT_VENDOR)/etc/alsa/cards/aliases.conf \
+    external/alsa-lib/src/conf/cards/vc4-hdmi.conf:$(TARGET_COPY_OUT_VENDOR)/etc/alsa/cards/vc4-hdmi.conf \
     external/alsa-lib/src/conf/ctl/default.conf:$(TARGET_COPY_OUT_VENDOR)/etc/alsa/ctl/default.conf \
     external/alsa-lib/src/conf/pcm/center_lfe.conf:$(TARGET_COPY_OUT_VENDOR)/etc/alsa/pcm/center_lfe.conf \
     external/alsa-lib/src/conf/pcm/default.conf:$(TARGET_COPY_OUT_VENDOR)/etc/alsa/pcm/default.conf \
@@ -122,6 +123,15 @@ PRODUCT_COPY_FILES += \
 PRODUCT_COPY_FILES += \
     $(DEVICE_PATH)/camera/media_profiles_V1_0.xml:$(TARGET_COPY_OUT_VENDOR)/etc/media_profiles_V1_0.xml
 
+# CEC
+PRODUCT_PACKAGES += \
+    android.hardware.tv.cec@1.0-impl \
+    android.hardware.tv.cec@1.0-service \
+    hdmi_cec.rpi
+
+PRODUCT_COPY_FILES += \
+    frameworks/native/data/etc/android.hardware.hdmi.cec.xml:$(TARGET_COPY_OUT_VENDOR)/etc/permissions/android.hardware.hdmi.cec.xml
+
 # Debugfs
 PRODUCT_SET_DEBUGFS_RESTRICTIONS := false
 
@@ -135,6 +145,10 @@ PRODUCT_PACKAGES += \
 PRODUCT_COPY_FILES += \
     frameworks/native/data/etc/android.hardware.ethernet.xml:$(TARGET_COPY_OUT_VENDOR)/etc/permissions/android.hardware.ethernet.xml
 
+# FFmpeg
+PRODUCT_PACKAGES += \
+    android.hardware.media.c2@1.2-service-ffmpeg
+
 # Gatekeeper
 PRODUCT_PACKAGES += \
     android.hardware.gatekeeper@1.0-service.software
@@ -174,6 +188,10 @@ PRODUCT_PACKAGES += \
 PRODUCT_COPY_FILES += \
     $(DEVICE_PATH)-kernel/Image:$(PRODUCT_OUT)/kernel
 
+# Keylayout
+PRODUCT_COPY_FILES += \
+    $(DEVICE_PATH)/keylayout/Generic.kl:$(TARGET_COPY_OUT_VENDOR)/usr/keylayout/Generic.kl
+
 # Keymaster
 PRODUCT_PACKAGES += \
     android.hardware.keymaster@3.0-impl \
@@ -186,7 +204,6 @@ PRODUCT_PACKAGES += \
 # Media
 PRODUCT_COPY_FILES += \
     $(DEVICE_PATH)/media/media_codecs.xml:$(TARGET_COPY_OUT_VENDOR)/etc/media_codecs.xml \
-    $(DEVICE_PATH)/media/media_codecs_v4l2_c2_video.xml:$(TARGET_COPY_OUT_VENDOR)/etc/media_codecs_v4l2_c2_video.xml \
     frameworks/av/media/libstagefright/data/media_codecs_google_c2_audio.xml:$(TARGET_COPY_OUT_VENDOR)/etc/media_codecs_google_c2_audio.xml \
     frameworks/av/media/libstagefright/data/media_codecs_google_c2_tv.xml:$(TARGET_COPY_OUT_VENDOR)/etc/media_codecs_google_c2_tv.xml \
     frameworks/av/media/libstagefright/data/media_codecs_google_c2_video.xml:$(TARGET_COPY_OUT_VENDOR)/etc/media_codecs_google_c2_video.xml
@@ -248,6 +265,9 @@ PRODUCT_PACKAGES += \
     android.hardware.media.c2@1.0-service-v4l2 \
     libc2plugin_store
 
+PRODUCT_COPY_FILES += \
+    $(DEVICE_PATH)/media/media_codecs_v4l2_c2_video.xml:$(TARGET_COPY_OUT_VENDOR)/etc/media_codecs_v4l2_c2_video.xml
+
 # Wifi
 PRODUCT_PACKAGES += \
     android.hardware.wifi@1.0-service \

keylayout/Generic.kl

@@ -0,0 +1,461 @@
+# Copyright (C) 2010 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.
+
+#
+# Generic key layout file for full alphabetic US English PC style external keyboards.
+#
+# This file is intentionally very generic and is intended to support a broad range of keyboards.
+# Do not edit the generic key layout to support a specific keyboard; instead, create
+# a new key layout file with the required keyboard configuration.
+#
+
+key 1     ESCAPE
+key 2     1
+key 3     2
+key 4     3
+key 5     4
+key 6     5
+key 7     6
+key 8     7
+key 9     8
+key 10    9
+key 11    0
+key 12    MINUS
+key 13    EQUALS
+key 14    DEL
+key 15    TAB
+key 16    Q
+key 17    W
+key 18    E
+key 19    R
+key 20    T
+key 21    Y
+key 22    U
+key 23    I
+key 24    O
+key 25    P
+key 26    LEFT_BRACKET
+key 27    RIGHT_BRACKET
+key 28    ENTER
+key 29    CTRL_LEFT
+key 30    A
+key 31    S
+key 32    D
+key 33    F
+key 34    G
+key 35    H
+key 36    J
+key 37    K
+key 38    L
+key 39    SEMICOLON
+key 40    APOSTROPHE
+key 41    GRAVE
+key 42    SHIFT_LEFT
+key 43    BACKSLASH
+key 44    Z
+key 45    X
+key 46    C
+key 47    V
+key 48    B
+key 49    N
+key 50    M
+key 51    COMMA
+key 52    PERIOD
+key 53    SLASH
+key 54    SHIFT_RIGHT
+key 55    NUMPAD_MULTIPLY
+key 56    ALT_LEFT
+key 57    SPACE
+key 58    CAPS_LOCK
+key 59    F1
+key 60    F2
+key 61    F3
+key 62    F4
+key 63    F5
+key 64    F6
+key 65    F7
+key 66    F8
+key 67    F9
+key 68    F10
+key 69    NUM_LOCK
+key 70    SCROLL_LOCK
+key 71    NUMPAD_7
+key 72    NUMPAD_8
+key 73    NUMPAD_9
+key 74    NUMPAD_SUBTRACT
+key 75    NUMPAD_4
+key 76    NUMPAD_5
+key 77    NUMPAD_6
+key 78    NUMPAD_ADD
+key 79    NUMPAD_1
+key 80    NUMPAD_2
+key 81    NUMPAD_3
+key 82    NUMPAD_0
+key 83    NUMPAD_DOT
+# key 84 (undefined)
+key 85    ZENKAKU_HANKAKU
+key 86    BACKSLASH
+key 87    F11
+key 88    F12
+key 89    RO
+# key 90 "KEY_KATAKANA"
+# key 91 "KEY_HIRAGANA"
+key 92    HENKAN
+key 93    KATAKANA_HIRAGANA
+key 94    MUHENKAN
+key 95    NUMPAD_COMMA
+key 96    NUMPAD_ENTER
+key 97    CTRL_RIGHT
+key 98    NUMPAD_DIVIDE
+key 99    SYSRQ
+key 100   ALT_RIGHT
+# key 101 "KEY_LINEFEED"
+key 102   MOVE_HOME
+key 103   DPAD_UP
+key 104   PAGE_UP
+key 105   DPAD_LEFT
+key 106   DPAD_RIGHT
+key 107   MOVE_END
+key 108   DPAD_DOWN
+key 109   PAGE_DOWN
+key 110   INSERT
+key 111   FORWARD_DEL
+# key 112 "KEY_MACRO"
+key 113   VOLUME_MUTE
+key 114   VOLUME_DOWN
+key 115   VOLUME_UP
+key 116   POWER
+key 117   NUMPAD_EQUALS
+# key 118 "KEY_KPPLUSMINUS"
+key 119   BREAK
+# key 120 (undefined)
+key 121   NUMPAD_COMMA
+key 122   KANA
+key 123   EISU
+key 124   YEN
+key 125   META_LEFT
+key 126   META_RIGHT
+key 127   MENU
+key 128   MEDIA_STOP
+# key 129 "KEY_AGAIN"
+# key 130 "KEY_PROPS"
+# key 131 "KEY_UNDO"
+# key 132 "KEY_FRONT"
+key 133   COPY
+# key 134 "KEY_OPEN"
+key 135   PASTE
+# key 136 "KEY_FIND"
+key 137   CUT
+# key 138 "KEY_HELP"
+key 139   MENU
+key 140   CALCULATOR
+# key 141 "KEY_SETUP"
+key 142   SLEEP
+key 143   WAKEUP
+# key 144 "KEY_FILE"
+# key 145 "KEY_SENDFILE"
+# key 146 "KEY_DELETEFILE"
+# key 147 "KEY_XFER"
+# key 148 "KEY_PROG1"
+# key 149 "KEY_PROG2"
+key 150   EXPLORER
+# key 151 "KEY_MSDOS"
+key 152   POWER
+# key 153 "KEY_DIRECTION"
+# key 154 "KEY_CYCLEWINDOWS"
+key 155   ENVELOPE
+key 156   BOOKMARK
+# key 157 "KEY_COMPUTER"
+key 158   BACK
+key 159   FORWARD
+key 160   MEDIA_CLOSE
+key 161   MEDIA_EJECT
+key 162   MEDIA_EJECT
+key 163   MEDIA_NEXT
+key 164   MEDIA_PLAY_PAUSE
+key 165   MEDIA_PREVIOUS
+key 166   MEDIA_STOP
+key 167   MEDIA_RECORD
+key 168   MEDIA_REWIND
+key 169   CALL
+# key 170 "KEY_ISO"
+key 171   MUSIC
+key 172   HOME
+key 173   REFRESH
+# key 174 "KEY_EXIT"
+# key 175 "KEY_MOVE"
+# key 176 "KEY_EDIT"
+key 177   PAGE_UP
+key 178   PAGE_DOWN
+key 179   NUMPAD_LEFT_PAREN
+key 180   NUMPAD_RIGHT_PAREN
+# key 181 "KEY_NEW"
+# key 182 "KEY_REDO"
+# key 183   F13
+# key 184   F14
+# key 185   F15
+# key 186   F16
+# key 187   F17
+# key 188   F18
+# key 189   F19
+# key 190   F20
+# key 191   F21
+# key 192   F22
+# key 193   F23
+# key 194   F24
+# key 195 (undefined)
+# key 196 (undefined)
+# key 197 (undefined)
+# key 198 (undefined)
+# key 199 (undefined)
+key 200   MEDIA_PLAY
+key 201   MEDIA_PAUSE
+# key 202 "KEY_PROG3"
+# key 203 "KEY_PROG4"
+key 204 NOTIFICATION
+# key 205 "KEY_SUSPEND"
+# key 206 "KEY_CLOSE"
+key 207   MEDIA_PLAY
+key 208   MEDIA_FAST_FORWARD
+# key 209 "KEY_BASSBOOST"
+# key 210 "KEY_PRINT"
+# key 211 "KEY_HP"
+key 212   CAMERA
+key 213   MUSIC
+# key 214 "KEY_QUESTION"
+key 215   ENVELOPE
+# key 216 "KEY_CHAT"
+key 217   SEARCH
+# key 218 "KEY_CONNECT"
+# key 219 "KEY_FINANCE"
+# key 220 "KEY_SPORT"
+# key 221 "KEY_SHOP"
+# key 222 "KEY_ALTERASE"
+# key 223 "KEY_CANCEL"
+key 224   BRIGHTNESS_DOWN
+key 225   BRIGHTNESS_UP
+key 226   HEADSETHOOK
+
+key 256   BUTTON_1
+key 257   BUTTON_2
+key 258   BUTTON_3
+key 259   BUTTON_4
+key 260   BUTTON_5
+key 261   BUTTON_6
+key 262   BUTTON_7
+key 263   BUTTON_8
+key 264   BUTTON_9
+key 265   BUTTON_10
+key 266   BUTTON_11
+key 267   BUTTON_12
+key 268   BUTTON_13
+key 269   BUTTON_14
+key 270   BUTTON_15
+key 271   BUTTON_16
+
+key 288   BUTTON_1
+key 289   BUTTON_2
+key 290   BUTTON_3
+key 291   BUTTON_4
+key 292   BUTTON_5
+key 293   BUTTON_6
+key 294   BUTTON_7
+key 295   BUTTON_8
+key 296   BUTTON_9
+key 297   BUTTON_10
+key 298   BUTTON_11
+key 299   BUTTON_12
+key 300   BUTTON_13
+key 301   BUTTON_14
+key 302   BUTTON_15
+key 303   BUTTON_16
+
+
+key 304   BUTTON_A
+key 305   BUTTON_B
+key 306   BUTTON_C
+key 307   BUTTON_X
+key 308   BUTTON_Y
+key 309   BUTTON_Z
+key 310   BUTTON_L1
+key 311   BUTTON_R1
+key 312   BUTTON_L2
+key 313   BUTTON_R2
+key 314   BUTTON_SELECT
+key 315   BUTTON_START
+key 316   BUTTON_MODE
+key 317   BUTTON_THUMBL
+key 318   BUTTON_THUMBR
+
+
+# key 352 "KEY_OK"
+key 353   DPAD_CENTER
+# key 354 "KEY_GOTO"
+# key 355 "KEY_CLEAR"
+# key 356 "KEY_POWER2"
+# key 357 "KEY_OPTION"
+# key 358 "KEY_INFO"
+# key 359 "KEY_TIME"
+# key 360 "KEY_VENDOR"
+# key 361 "KEY_ARCHIVE"
+key 362   GUIDE
+# key 363 "KEY_CHANNEL"
+# key 364 "KEY_FAVORITES"
+# key 365 "KEY_EPG"
+key 366   DVR
+# key 367 "KEY_MHP"
+# key 368 "KEY_LANGUAGE"
+# key 369 "KEY_TITLE"
+key 370   CAPTIONS
+# key 371 "KEY_ANGLE"
+# key 372 "KEY_ZOOM"
+# key 373 "KEY_MODE"
+# key 374 "KEY_KEYBOARD"
+# key 375 "KEY_SCREEN"
+# key 376 "KEY_PC"
+key 377   TV
+# key 378 "KEY_TV2"
+# key 379 "KEY_VCR"
+# key 380 "KEY_VCR2"
+# key 381 "KEY_SAT"
+# key 382 "KEY_SAT2"
+# key 383 "KEY_CD"
+# key 384 "KEY_TAPE"
+# key 385 "KEY_RADIO"
+# key 386 "KEY_TUNER"
+# key 387 "KEY_PLAYER"
+# key 388 "KEY_TEXT"
+# key 389 "KEY_DVD"
+# key 390 "KEY_AUX"
+# key 391 "KEY_MP3"
+# key 392 "KEY_AUDIO"
+# key 393 "KEY_VIDEO"
+# key 394 "KEY_DIRECTORY"
+# key 395 "KEY_LIST"
+# key 396 "KEY_MEMO"
+key 397   CALENDAR
+key 398   PROG_RED
+key 399   PROG_GREEN
+key 400   PROG_YELLOW
+key 401   PROG_BLUE
+key 402   CHANNEL_UP
+key 403   CHANNEL_DOWN
+# key 404 "KEY_FIRST"
+key 405   LAST_CHANNEL
+# key 406 "KEY_AB"
+# key 407 "KEY_NEXT"
+# key 408 "KEY_RESTART"
+# key 409 "KEY_SLOW"
+# key 410 "KEY_SHUFFLE"
+# key 411 "KEY_BREAK"
+# key 412 "KEY_PREVIOUS"
+# key 413 "KEY_DIGITS"
+# key 414 "KEY_TEEN"
+# key 415 "KEY_TWEN"
+
+key 429   CONTACTS
+
+# key 448 "KEY_DEL_EOL"
+# key 449 "KEY_DEL_EOS"
+# key 450 "KEY_INS_LINE"
+# key 451 "KEY_DEL_LINE"
+
+
+key 464   FUNCTION
+key 465   ESCAPE            FUNCTION
+key 466   F1                FUNCTION
+key 467   F2                FUNCTION
+key 468   F3                FUNCTION
+key 469   F4                FUNCTION
+key 470   F5                FUNCTION
+key 471   F6                FUNCTION
+key 472   F7                FUNCTION
+key 473   F8                FUNCTION
+key 474   F9                FUNCTION
+key 475   F10               FUNCTION
+key 476   F11               FUNCTION
+key 477   F12               FUNCTION
+key 478   1                 FUNCTION
+key 479   2                 FUNCTION
+key 480   D                 FUNCTION
+key 481   E                 FUNCTION
+key 482   F                 FUNCTION
+key 483   S                 FUNCTION
+key 484   B                 FUNCTION
+
+
+# key 497 KEY_BRL_DOT1
+# key 498 KEY_BRL_DOT2
+# key 499 KEY_BRL_DOT3
+# key 500 KEY_BRL_DOT4
+# key 501 KEY_BRL_DOT5
+# key 502 KEY_BRL_DOT6
+# key 503 KEY_BRL_DOT7
+# key 504 KEY_BRL_DOT8
+
+key 522   STAR
+key 523   POUND
+key 580   APP_SWITCH
+key 582   VOICE_ASSIST
+# Linux KEY_ASSISTANT
+key 583   ASSIST
+
+# CEC
+key 352   ENTER
+key 618   HOME
+key 141   POWER
+key 174   BACK
+
+# Keys defined by HID usages
+key usage 0x0c0067 WINDOW
+key usage 0x0c006F BRIGHTNESS_UP
+key usage 0x0c0070 BRIGHTNESS_DOWN
+key usage 0x0c0173 MEDIA_AUDIO_TRACK
+
+# Joystick and game controller axes.
+# Axes that are not mapped will be assigned generic axis numbers by the input subsystem.
+axis 0x00 X
+axis 0x01 Y
+axis 0x02 Z
+axis 0x03 RX
+axis 0x04 RY
+axis 0x05 RZ
+axis 0x06 THROTTLE
+axis 0x07 RUDDER
+axis 0x08 WHEEL
+axis 0x09 GAS
+axis 0x0a BRAKE
+axis 0x10 HAT_X
+axis 0x11 HAT_Y
+
+# LEDs
+led 0x00 NUM_LOCK
+led 0x01 CAPS_LOCK
+led 0x02 SCROLL_LOCK
+led 0x03 COMPOSE
+led 0x04 KANA
+led 0x05 SLEEP
+led 0x06 SUSPEND
+led 0x07 MUTE
+led 0x08 MISC
+led 0x09 MAIL
+led 0x0a CHARGING
+
+# SENSORs
+sensor 0x00 ACCELEROMETER X
+sensor 0x01 ACCELEROMETER Y
+sensor 0x02 ACCELEROMETER Z
+sensor 0x03 GYROSCOPE X
+sensor 0x04 GYROSCOPE Y
+sensor 0x05 GYROSCOPE Z

manifest.xml

@@ -76,15 +76,6 @@
             <instance>default</instance>
         </interface>
     </hal>
-    <hal format="hidl">
-        <name>android.hardware.media.c2</name>
-        <transport>hwbinder</transport>
-        <version>1.0</version>
-        <interface>
-            <name>IComponentStore</name>
-            <instance>default</instance>
-        </interface>
-    </hal>
     <hal format="hidl">
         <name>android.hardware.media.omx</name>
         <transport>hwbinder</transport>
@@ -98,4 +89,13 @@
             <instance>default</instance>
         </interface>
     </hal>
+    <hal format="hidl">
+        <name>android.hardware.tv.cec</name>
+        <transport>hwbinder</transport>
+        <version>1.0</version>
+        <interface>
+            <name>IHdmiCec</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
 </manifest>

media/media_codecs.xml

@@ -17,7 +17,8 @@
 -->
 
 <MediaCodecs>
-    <!-- <Include href="media_codecs_v4l2_c2_video.xml" /> -->
+    <Include href="media_codecs_ffmpeg_c2.xml" />
+    <Include href="media_codecs_v4l2_c2_video.xml" />
     <Include href="media_codecs_google_c2_audio.xml" />
     <Include href="media_codecs_google_c2_tv.xml" />
     <Include href="media_codecs_google_c2_video.xml" />

media/media_codecs_v4l2_c2_video.xml

@@ -17,7 +17,6 @@
 -->
 
 <Included>
-<!--
    <Encoders>
        <MediaCodec name="c2.v4l2.avc.encoder" type="video/avc">
            <Limit name="size" min="32x32" max="4096x4096" />
@@ -29,10 +28,9 @@
            <Limit name="performance-point-1280x720" range="30-30" />
        </MediaCodec>
    </Encoders>
--->
 
    <Decoders>
-       <MediaCodec name="c2.v4l2.avc.decoder" type="video/avc" >
+       <MediaCodec name="c2.v4l2.avc.decoder" type="video/avc">
            <Limit name="size" min="16x16" max="4096x4096" />
            <Limit name="alignment" value="2x2" />
            <Limit name="block-size" value="16x16" />
@@ -42,65 +40,5 @@
            <Limit name="performance-point-3840x2160" range="30-30" />
            <Feature name="adaptive-playback" />
        </MediaCodec>
-
-<!--
-       <MediaCodec name="c2.v4l2.vp8.decoder" type="video/x-vnd.on2.vp8" >
-           <Limit name="size" min="16x16" max="4096x4096" />
-           <Limit name="alignment" value="2x2" />
-           <Limit name="block-size" value="16x16" />
-           <Limit name="blocks-per-second" min="1" max="1984500" />
-           <Limit name="bitrate" range="1-62500000" />
-           <Limit name="concurrent-instances" max="8" />
-           <Limit name="performance-point-3840x2160" range="30-30" />
-           <Feature name="adaptive-playback" />
-       </MediaCodec>
-
-       <MediaCodec name="c2.v4l2.vp9.decoder" type="video/x-vnd.on2.vp9" >
-           <Limit name="size" min="16x16" max="4096x4096" />
-           <Limit name="alignment" value="2x2" />
-           <Limit name="block-size" value="16x16" />
-           <Limit name="blocks-per-second" min="1" max="2073600" />
-           <Limit name="bitrate" range="1-62500000" />
-           <Limit name="concurrent-instances" max="8" />
-           <Limit name="performance-point-3840x2160" range="30-30" />
-           <Feature name="adaptive-playback" />
-       </MediaCodec>
-
-       <MediaCodec name="c2.v4l2.avc.decoder.secure" type="video/avc" >
-           <Limit name="size" min="16x16" max="4096x4096" />
-           <Limit name="alignment" value="2x2" />
-           <Limit name="block-size" value="16x16" />
-           <Limit name="blocks-per-second" min="1" max="1879200" />
-           <Limit name="bitrate" range="1-62500000" />
-           <Limit name="concurrent-instances" max="8" />
-           <Limit name="performance-point-3840x2160" range="30-30" />
-           <Feature name="adaptive-playback" />
-           <Feature name="secure-playback" required="true" />
-       </MediaCodec>
-
-       <MediaCodec name="c2.v4l2.vp8.decoder.secure" type="video/x-vnd.on2.vp8" >
-           <Limit name="size" min="16x16" max="4096x4096" />
-           <Limit name="alignment" value="2x2" />
-           <Limit name="block-size" value="16x16" />
-           <Limit name="blocks-per-second" min="1" max="1984500" />
-           <Limit name="bitrate" range="1-62500000" />
-           <Limit name="concurrent-instances" max="8" />
-           <Limit name="performance-point-3840x2160" range="30-30" />
-           <Feature name="adaptive-playback" />
-           <Feature name="secure-playback" required="true" />
-       </MediaCodec>
-
-       <MediaCodec name="c2.v4l2.vp9.decoder.secure" type="video/x-vnd.on2.vp9" >
-           <Limit name="size" min="16x16" max="4096x4096" />
-           <Limit name="alignment" value="2x2" />
-           <Limit name="block-size" value="16x16" />
-           <Limit name="blocks-per-second" min="1" max="2073600" />
-           <Limit name="bitrate" range="1-62500000" />
-           <Limit name="concurrent-instances" max="8" />
-           <Limit name="performance-point-3840x2160" range="30-30" />
-           <Feature name="adaptive-playback" />
-           <Feature name="secure-playback" required="true" />
-       </MediaCodec>
--->
    </Decoders>
 </Included>

overlay/AndroidRpiOverlay/res/values/config.xml

@@ -46,6 +46,12 @@
                cell broadcasting sms, and MMS. -->
     <bool name="config_sms_capable">false</bool>
 
+    <!-- Flag indicating whether the current device allows data.
+         If true, this means that the device supports data connectivity through
+         the telephony network.
+         This can be overridden to false for devices that support voice and/or sms . -->
+    <bool name="config_mobile_data_capable">false</bool>
+
     <!-- Whether a software navigation bar should be shown. NOTE: in the future this may be
          autodetected from the Configuration. -->
     <bool name="config_showNavigationBar">true</bool>

overlay/SettingsProviderRpiOverlay/res/values/defaults.xml

@@ -33,6 +33,9 @@
     <!-- Keep screen on at all times by default -->
     <bool name="def_stay_on_while_plugged_in">true</bool>
 
+    <!-- Disable HDMI-CEC power off -->
+    <bool name="def_hdmiControlAutoDeviceOff">false</bool>
+
     <!-- No setup wizard -->
     <bool name="def_device_provisioned">true</bool>
     <bool name="def_user_setup_complete">true</bool>

ramdisk/init.rpi4.rc

@@ -19,20 +19,6 @@ on property:sys.boot_completed=1
     # Reinit lmkd to reconfigure lmkd properties
     setprop lmkd.reinit 1
 
-on property:sys.boot_completed=1 && property:persist.audio.hdmi.device=*
-    stop alsa_loop
-    start alsa_loop
-
-on property:persist.audio.hdmi.device=
-    stop alsa_loop
-
-service alsa_loop /vendor/bin/alsa_loop --cdevice=hw:${persist.audio.pcm.card},1 --pdevice=default:CARD=${persist.audio.hdmi.device}
-    user root
-    group system
-    priority 10
-    ioprio rt 4
-    disabled
-
 service suspend_blocker_rpi /vendor/bin/suspend_blocker_rpi
     class early_hal # Start together with system_suspend HAL
     group system

ramdisk/ueventd.rpi4.rc

@@ -8,6 +8,10 @@
 /dev/v4l-subdev*                                                             0660   system     camera
 /dev/video*                                                                  0660   system     camera
 
+# CEC
+/dev/cec0                                                                    0660   system     graphics
+/dev/cec1                                                                    0660   system     graphics
+
 # DMA
 /dev/dma_heap/linux,cma                                                      0666   system     graphics
 

sepolicy/alsa_loop.te

@@ -1,7 +0,0 @@
-type alsa_loop, domain;
-type alsa_loop_exec, exec_type, vendor_file_type, file_type;
-
-init_daemon_domain(alsa_loop)
-
-allow alsa_loop audio_device:dir r_dir_perms;
-allow alsa_loop audio_device:chr_file rw_file_perms;

sepolicy/device.te

@@ -1 +1,2 @@
+type cec_device, dev_type;
 type vcio_device, dev_type, mlstrustedobject;

sepolicy/file_contexts

@@ -1,17 +1,21 @@
-# Audio
-/vendor/bin/alsa_loop                                                        u:object_r:alsa_loop_exec:s0
-
 # Bluetooth
 /dev/ttyAMA0                                                                 u:object_r:hci_attach_dev:s0
 /dev/vcio                                                                    u:object_r:vcio_device:s0
 /sys/class/rfkill/rfkill[0-9]/state                                          u:object_r:sysfs_bluetooth_writable:s0
 
+# CEC
+/dev/cec0                                                                    u:object_r:cec_device:s0
+/dev/cec1                                                                    u:object_r:cec_device:s0
+
 # DRM
 /vendor/bin/hw/android\.hardware\.drm@1\.4-service\.clearkey                 u:object_r:hal_drm_clearkey_exec:s0
 /vendor/bin/hw/android\.hardware\.drm@1\.4-service\.widevine                 u:object_r:hal_drm_widevine_exec:s0
 
+# FFmpeg
+/vendor/bin/hw/android\.hardware\.media\.c2@1\.2-service-ffmpeg(.*)?         u:object_r:mediacodec_exec:s0
+
 # Gatekeeper
-/vendor/bin/hw/android\.hardware\.gatekeeper@1\.0-service.software           u:object_r:hal_gatekeeper_default_exec:s0
+/vendor/bin/hw/android\.hardware\.gatekeeper@1\.0-service\.software          u:object_r:hal_gatekeeper_default_exec:s0
 
 # Graphics
 /dev/dri                                                                                u:object_r:gpu_device:s0
@@ -29,12 +33,12 @@
 /vendor/lib(64)?/libminigbm_gralloc_gbm_mesa\.so                                        u:object_r:same_process_hal_file:s0
 
 # Health
-/vendor/bin/hw/android\.hardware\.health@2\.0-service.rpi                    u:object_r:hal_health_default_exec:s0
+/vendor/bin/hw/android\.hardware\.health@2\.0-service\.rpi                   u:object_r:hal_health_default_exec:s0
 
 # Lights
 /sys/class/backlight/rpi_backlight/brightness                                u:object_r:sysfs_leds:s0
 /sys/devices/platform/rpi_backlight/backlight/rpi_backlight/brightness       u:object_r:sysfs_leds:s0
-/vendor/bin/hw/android\.hardware\.light@2\.0-service.rpi                     u:object_r:hal_light_default_exec:s0
+/vendor/bin/hw/android\.hardware\.light@2\.0-service\.rpi                    u:object_r:hal_light_default_exec:s0
 
 # Partitions
 /dev/block/mmcblk0p1                                                         u:object_r:boot_block_device:s0

sepolicy/hal_tv_cec_default.te

@@ -0,0 +1 @@
+allow hal_tv_cec_default cec_device:chr_file rw_file_perms;

vendor.prop

@@ -1,9 +1,11 @@
 
 # Audio
+persist.audio.hdmi.device=vc4hdmi0
 persist.audio.pcm.card=0
 persist.audio.pcm.device=0
 ro.config.media_vol_default=20
 ro.config.media_vol_steps=25
+ro.hardware.audio.primary=rpi
 
 # Bluetooth
 ro.rfkilldisabled=1
@@ -12,9 +14,19 @@ ro.rfkilldisabled=1
 media.settings.xml=/vendor/etc/media_profiles_V1_0.xml
 ro.hardware.camera=libcamera
 
+# CEC
+ro.hdmi.cec_device=cec0
+ro.hdmi.device_type=4
+
 # Display
 debug.drm.mode.force=1920x1080
 
+# FFmpeg
+persist.ffmpeg_codec2.rank.audio=16
+persist.ffmpeg_codec2.rank.video=256
+persist.ffmpeg_codec2.v4l2.h264=false
+persist.ffmpeg_codec2.v4l2.h265=true
+
 # Graphics
 ro.hardware.hwcomposer=drm
 ro.hardware.vulkan=broadcom
@@ -34,6 +46,8 @@ ro.lmk.use_minfree_levels=true
 
 # V4L2
 debug.stagefright.c2-poolmask=0xf50000
+persist.v4l2_codec2.rank.decoder=128
+persist.v4l2_codec2.rank.encoder=128
 ro.vendor.v4l2_codec2.decode_concurrent_instances=8
 ro.vendor.v4l2_codec2.encode_concurrent_instances=8