path: root/audio/primary/audio_hw.c

/*
 * Copyright (C) 2019 Texas Instruments
 *
 * 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_primary"
//#define LOG_NDEBUG 0

#include <errno.h>
#include <stdint.h>
#include <stdlib.h>
#include <pthread.h>
#include <unistd.h>
#include <sys/time.h>

#include <log/log.h>
#include <cutils/str_parms.h>
#include <cutils/properties.h>

#include <audio_utils/resampler.h>
#include <audio_route/audio_route.h>
#include <system/audio.h>
#include <hardware/hardware.h>
#include <hardware/audio.h>
#include <hardware/audio_effect.h>

#include <tinyalsa/asoundlib.h>

#define UNUSED(x) (void)(x)

/* yet another definition of ARRAY_SIZE macro) */
#define ARRAY_SIZE(x)           (sizeof(x)/sizeof(x[0]))

#define DEFAULT_AUDIO_FORMAT  AUDIO_FORMAT_PCM_24_BIT_PACKED

struct j7_audio_device {
    struct audio_hw_device device;
    struct j7_stream_in *in;
    struct j7_stream_out *out;
    struct audio_route *route;
    pthread_mutex_t lock;
    unsigned int card;
    bool mic_mute;
    audio_mode_t mode;
};

struct j7_stream_in {
    struct audio_stream_in stream;
    struct j7_audio_device *dev;
    struct pcm_config config;
    struct pcm *pcm;
    struct resampler_buffer_provider buf_provider;
    size_t frames_in;
    size_t hw_frame_size;
    unsigned int requested_rate;
    unsigned int requested_channels;
    unsigned int card;
    unsigned int port;
    audio_devices_t device;
    int read_status;
    pthread_mutex_t lock;
    bool standby;
};

struct j7_stream_out {
    struct audio_stream_out stream;
    struct j7_audio_device *dev;
    struct pcm_config config;
    struct pcm *pcm;
    struct timespec last;
    pthread_mutex_t lock;
    size_t hw_frame_size;
    unsigned int requested_rate;
    unsigned int requested_channels;
    unsigned int card;
    unsigned int port;
    audio_devices_t device;
    bool standby;
    int64_t written; /* total frames written, not cleared when entering standby */
};

static const char *supported_media_cards[] = {
    "j721e-cpb-analog",
};

#define MAX_CARD_COUNT                  1
#define BYTES_PER_SAMPLE (3) //for 24 bit 3 bytes are required

#define SUPPORTED_IN_DEVICES           (AUDIO_DEVICE_IN_WIRED_HEADSET | \
                                        AUDIO_DEVICE_IN_DEFAULT)

#define SUPPORTED_OUT_DEVICES          (AUDIO_DEVICE_OUT_SPEAKER | \
                                        AUDIO_DEVICE_OUT_DEFAULT)

#define CAPTURE_SAMPLE_RATE             48000 /* 48K Hz*/
#define CAPTURE_PERIOD_SIZE             256
#define CAPTURE_PERIOD_COUNT            4
#define CAPTURE_BUFFER_SIZE             (CAPTURE_PERIOD_SIZE * CAPTURE_PERIOD_COUNT)

#define PLAYBACK_SAMPLE_RATE            48000 /* 48K Hz*/
#define PLAYBACK_PERIOD_SIZE            256
#define PLAYBACK_PERIOD_COUNT           4
#define PLAYBACK_BUFFER_SIZE            (PLAYBACK_PERIOD_SIZE * PLAYBACK_PERIOD_COUNT)

#define MIXER_XML_PATH                  "/vendor/etc/mixer_paths.xml"

struct pcm_config pcm_config_capture = {
    .channels        = 2,/* Stereo mode */
    .rate            = CAPTURE_SAMPLE_RATE,/* 48K Hz*/
    .format          = PCM_FORMAT_S24_3LE,
    .period_size     = CAPTURE_PERIOD_SIZE,
    .period_count    = CAPTURE_PERIOD_COUNT,
    .start_threshold = 1,
    .stop_threshold  = CAPTURE_BUFFER_SIZE,
};

struct pcm_config pcm_config_playback = {
    .channels        = 2,/* Stereo mode */
    .rate            = PLAYBACK_SAMPLE_RATE,/* 48K Hz*/
    .format          = PCM_FORMAT_S24_3LE,
    .period_size     = PLAYBACK_PERIOD_SIZE,
    .period_count    = PLAYBACK_PERIOD_COUNT,
    .start_threshold = PLAYBACK_BUFFER_SIZE / 2,
    .stop_threshold  = PLAYBACK_BUFFER_SIZE,
    .avail_min       = PLAYBACK_PERIOD_SIZE,
};

/*
 * Recommended buffer sizes for the mandatory sampling frequencies.
 * The buffer sizes were specifically chosen to avoid multiple
 * resample_from_input() calls to consume an output buffer, which
 * simplifies the HAL's write() function.
 * The hardware natively supports 48kHz, but the rate of
 * the playback and capture streams must be symmetric (they share the
 * same FSYNC).
 */
static inline uint32_t output_buffer_size(uint32_t rate)
{
    uint32_t samples;

    if (rate == 48000){
       return PLAYBACK_PERIOD_SIZE;
    }
    else{
       /*
       * take resampling into account and return the closest majoring
       * multiple of 16 frames, as audioflinger expects audio buffers to
       * be a multiple of 16 frames
       */
      samples = (rate * PLAYBACK_PERIOD_SIZE) / PLAYBACK_SAMPLE_RATE;
      samples = ((samples + 15) / 16) * 16;
      ALOGV("output_buffer_size() samples=%d\n",samples);
    }
    return samples;
}

static size_t get_input_buffer_size(uint32_t sample_rate, int format, int channel_count)
{
    size_t size;

    /*
     * take resampling into account and return the closest majoring
     * multiple of 16 frames, as audioflinger expects audio buffers to
     * be a multiple of 16 frames
     */
    size = (pcm_config_capture.period_size * sample_rate) / pcm_config_capture.rate;
    size = ((size + 15) / 16) * 16;

    return size * channel_count * audio_bytes_per_sample(format);
}
/* audio HAL functions */

static uint32_t out_get_sample_rate(const struct audio_stream *stream)
{
    const struct j7_stream_out *out = (const struct j7_stream_out *)stream;

    ALOGV("out_get_sample_rate() stream=%p rate=%u", stream, out->requested_rate);

    return out->requested_rate;
}

static int out_set_sample_rate(struct audio_stream *stream, uint32_t rate)
{
    UNUSED(stream);
    UNUSED(rate);
    ALOGV("out_set_sample_rate() stream=%p rate=%u", stream, rate);
    /* Only 48KHz is supported so we simply return 0 */
    return 0;
}

static size_t out_get_buffer_size(const struct audio_stream *stream)
{
    const struct j7_stream_out *out = (const struct j7_stream_out *)stream;
    uint32_t frames = output_buffer_size(out->requested_rate);
    size_t bytes = frames * out->requested_channels * audio_bytes_per_sample(DEFAULT_AUDIO_FORMAT);

    ALOGV("out_get_buffer_size() stream=%p frames=%u bytes=%zu", stream, frames, bytes);

    return bytes;
}

static audio_channel_mask_t out_get_channels(const struct audio_stream *stream)
{
    const struct j7_stream_out *out = (const struct j7_stream_out *)stream;

    ALOGV("out_get_channels() stream=%p channels=%u", stream, out->requested_channels);

    return audio_channel_out_mask_from_count(out->requested_channels);
}

static audio_format_t out_get_format(const struct audio_stream *stream)
{
    audio_format_t format = DEFAULT_AUDIO_FORMAT;
    UNUSED(stream);
    ALOGV("out_get_format() stream=%p format=0x%08x (%zu bits/sample)",
           stream, format, audio_bytes_per_sample(format) << 3);
    return format;
}

static int out_set_format(struct audio_stream *stream, audio_format_t format)
{
    UNUSED(stream);
    ALOGV("out_set_format() stream=%p format=0x%08x (%zu bits/sample)",
          stream, format, audio_bytes_per_sample(format) << 3);

    if (format != DEFAULT_AUDIO_FORMAT) {
        return -ENOSYS;
    } else {
        return 0;
    }
}

/* must be called with locks held */
static void do_out_standby(struct j7_stream_out *out)
{
    struct j7_audio_device *adev = out->dev;

    if (!out->standby) {
        ALOGV("do_out_standby() close card %u port %u", out->card, out->port);
        pcm_close(out->pcm);
        out->pcm = NULL;
        out->standby = true;
    }
}

static int out_standby(struct audio_stream *stream)
{
    struct j7_stream_out *out = (struct j7_stream_out *)(stream);
    struct j7_audio_device *adev = out->dev;

    ALOGV("out_standby() stream=%p", out);
    pthread_mutex_lock(&adev->lock);
    pthread_mutex_lock(&out->lock);
    do_out_standby(out);
    pthread_mutex_unlock(&out->lock);
    pthread_mutex_unlock(&adev->lock);

    return 0;
}

static int out_dump(const struct audio_stream *stream, int fd)
{
    UNUSED(stream);
    UNUSED(fd);
    /* As of now nothing to dump any debug data */
    return 0;
}

static int out_set_parameters(struct audio_stream *stream, const char *kvpairs)
{
    struct j7_stream_out *out = (struct j7_stream_out *)(stream);
    struct j7_audio_device *adev = out->dev;
    struct str_parms *parms;
    char value[32];
    int ret;
    uint32_t val = 0;

    ALOGV("out_set_parameters() stream=%p parameter='%s'", out, kvpairs);

    parms = str_parms_create_str(kvpairs);

    ret = str_parms_get_str(parms, AUDIO_PARAMETER_STREAM_ROUTING, value, sizeof(value));
    if (ret >= 0) {
        /* Here the value is properly checked and filled by the framework */
        val = atoi(value);
        pthread_mutex_lock(&adev->lock);
        pthread_mutex_lock(&out->lock);
        if (val != 0) {
            if ((out->device & AUDIO_DEVICE_OUT_ALL) != val) {
                ALOGI("out_set_parameters() forcing standby");
                do_out_standby(out);
            }

            /* set the active output device */
            out->device = val;
        }
        pthread_mutex_unlock(&out->lock);
        pthread_mutex_unlock(&adev->lock);
    }
    str_parms_destroy(parms);
    return 0;
}

static char* out_get_parameters(const struct audio_stream *stream, const char *keys)
{
    UNUSED(stream);
    UNUSED(keys);
    /* Caller will be freeing this memory */
    return strdup("");
}

static uint32_t out_get_latency(const struct audio_stream_out *stream)
{
    const struct j7_stream_out *out = (const struct j7_stream_out *)(stream);
    uint32_t frames = PLAYBACK_BUFFER_SIZE;
    uint32_t latency = (frames * 1000) / PLAYBACK_SAMPLE_RATE;

    ALOGV("out_get_latency() stream=%p latency=%u msecs", out, latency);

    return latency;
}

static int out_set_volume(struct audio_stream_out *stream, float left,
                          float right)
{
    UNUSED(stream);
    UNUSED(left);
    UNUSED(right);
    /* As of now we dont support this operation */
    return -ENOSYS;
}

static ssize_t out_write(struct audio_stream_out *stream, const void* buffer,
                         size_t bytes)
{
    const struct audio_stream_out *s = (const struct audio_stream_out *)stream;
    struct j7_stream_out *out = (struct j7_stream_out *)(stream);
    struct j7_audio_device *adev = out->dev;
    struct timespec now;
    const size_t frame_size = audio_stream_out_frame_size(s);
    size_t frames = bytes / frame_size;
    size_t hw_frames;
    uint32_t rate = out->requested_rate;
    uint32_t write_usecs = frames * 1000000 / rate;
    uint32_t diff_usecs;
    const void *hw_buf;
    void *in_buf;
    int ret = 0;

    ALOGV("out_write() stream=%p buffer=%p size=%zu/%u time=%u usecs",
           out, buffer, frames, rate, write_usecs);

    pthread_mutex_lock(&adev->lock);
    pthread_mutex_lock(&out->lock);

    if (out->standby) {
            ALOGV("out_write() open card %u port %u", out->card, out->port);

            out->pcm = pcm_open(out->card, out->port,
                                PCM_OUT | PCM_MONOTONIC,
                                &out->config);
            if (!pcm_is_ready(out->pcm)) {
                ALOGE("out_write() failed to open pcm out: %s", pcm_get_error(out->pcm));
                pcm_close(out->pcm);
                out->pcm = NULL;
                ret = -ENODEV;
            }
        if (ret) {
            usleep(write_usecs); /* limits the rate of error messages */
            pthread_mutex_unlock(&out->lock);
            pthread_mutex_unlock(&adev->lock);
            return ret;
        }

        out->standby = false;
    }

    pthread_mutex_unlock(&adev->lock);

    hw_frames = frames;
    hw_buf = buffer;

    ret = pcm_write(out->pcm, hw_buf, hw_frames * out->hw_frame_size);
    if (ret) {
        ALOGE("out_write() failed to write audio data %d", ret);
        usleep(write_usecs); /* limits the rate of error messages */
    }

    out->written += frames;

    pthread_mutex_unlock(&out->lock);

    return bytes;
}

static int out_get_render_position(const struct audio_stream_out *stream,
                                   uint32_t *dsp_frames)
{
    UNUSED(stream);
    UNUSED(dsp_frames);
    /* As of now we dont support this operation */
    return -ENOSYS;
}

static int out_add_audio_effect(const struct audio_stream *stream, effect_handle_t effect)
{
    UNUSED(stream);
    UNUSED(effect);
    /* As of now we dont support this operation */
    return 0;
}

static int out_remove_audio_effect(const struct audio_stream *stream, effect_handle_t effect)
{
    UNUSED(stream);
    UNUSED(effect);
    /* As of now we dont support this operation */
    return 0;
}

static int out_get_next_write_timestamp(const struct audio_stream_out *stream,
                                        int64_t *timestamp)
{
    UNUSED(stream);
    UNUSED(timestamp);
    /* As of now we dont support this operation */
    return -ENOSYS;
}

static int out_get_presentation_position(const struct audio_stream_out *stream,
                                         uint64_t *frames, struct timespec *timestamp)
{
    struct j7_stream_out *out = (struct j7_stream_out *)(stream);
    struct j7_audio_device *adev = out->dev;
    int64_t signed_frames = -1;
    uint32_t avail;
    int ret = -1;

    pthread_mutex_lock(&out->lock);

    if (out->pcm &&
        (pcm_get_htimestamp(out->pcm, &avail, timestamp) == 0)) {
        signed_frames = out->written - pcm_get_buffer_size(out->pcm) + avail;
    }

    /* It would be unusual for this value to be negative, but check just in case ... */
    if (signed_frames >= 0) {
        *frames = signed_frames;
        ret = 0;
    }

    pthread_mutex_unlock(&out->lock);

    return ret;
}

/** audio_stream_in implementation **/
static uint32_t in_get_sample_rate(const struct audio_stream *stream)
{
    const struct j7_stream_in *in = (const struct j7_stream_in *)(stream);

    ALOGV("in_get_sample_rate() stream=%p rate=%u", stream, in->requested_rate);

    return in->requested_rate;
}

static int in_set_sample_rate(struct audio_stream *stream, uint32_t rate)
{
    ALOGV("in_set_sample_rate() stream=%p rate=%u", stream, rate);
    /* Only 48KHz is supported so we simply return 0 */
    return 0;
}

static size_t in_get_buffer_size(const struct audio_stream *stream)
{
    const struct j7_stream_in *in = (const struct j7_stream_in *)(stream);

    size_t bytes = get_input_buffer_size(in->requested_rate,
                                         DEFAULT_AUDIO_FORMAT,
                                         in->requested_channels);

    ALOGV("in_get_buffer_size() stream=%p bytes=%zu", in, bytes);

    return bytes;
}

static audio_channel_mask_t in_get_channels(const struct audio_stream *stream)
{
    const struct j7_stream_in *in = (const struct j7_stream_in *)(stream);
    audio_channel_mask_t channels = audio_channel_in_mask_from_count(in->requested_channels);

    ALOGV("in_get_channels() stream=%p channels=%u", in, in->requested_channels);

    return channels;
}

static audio_format_t in_get_format(const struct audio_stream *stream)
{
    audio_format_t format = DEFAULT_AUDIO_FORMAT;

    UNUSED(stream);
    ALOGV("in_set_format() stream=%p format=0x%08x (%zu bits/sample)",
           stream, format, audio_bytes_per_sample(format) << 3);

    return format;
}

static int in_set_format(struct audio_stream *stream, audio_format_t format)
{
    UNUSED(stream);
    ALOGV("in_set_format() stream=%p format=0x%08x (%zu bits/sample)",
          stream, format, audio_bytes_per_sample(format) << 3);

    if (format != DEFAULT_AUDIO_FORMAT) {
        return -ENOSYS;
    } else {
        return 0;
    }
}

/* must be called with locks held */
static void do_in_standby(struct j7_stream_in *in)
{
    struct j7_audio_device *adev = in->dev;

    if (!in->standby) {
        ALOGI("do_in_standby() close card %u port %u", in->card, in->port);
        pcm_close(in->pcm);
        in->pcm = NULL;
        in->standby = true;
    }
}

static int in_standby(struct audio_stream *stream)
{
    struct j7_stream_in *in = (struct j7_stream_in *)(stream);
    struct j7_audio_device *adev = in->dev;

    ALOGV("in_standby() stream=%p", in);
    pthread_mutex_lock(&adev->lock);
    pthread_mutex_lock(&in->lock);
    do_in_standby(in);
    pthread_mutex_unlock(&in->lock);
    pthread_mutex_unlock(&adev->lock);

    return 0;
}

static int in_dump(const struct audio_stream *stream, int fd)
{
    UNUSED(stream);
    UNUSED(fd);
    /* As of now nothing to dump anu debug data */
    return 0;
}

static int in_set_parameters(struct audio_stream *stream, const char *kvpairs)
{
    struct j7_stream_in *in = (struct j7_stream_in *)(stream);
    struct j7_audio_device *adev = in->dev;
    struct str_parms *parms;
    char value[32];
    int ret;
    uint32_t val = 0;

    ALOGV("in_set_parameters() stream=%p parameter='%s'", stream, kvpairs);

    parms = str_parms_create_str(kvpairs);

    /* Nothing to do for AUDIO_PARAMETER_STREAM_INPUT_SOURCE, so it's ignored */

    ret = str_parms_get_str(parms, AUDIO_PARAMETER_STREAM_ROUTING, value, sizeof(value));
    if (ret >= 0) {
        /* Here the value is properly checked and filled by the framework */
        val = atoi(value);
        pthread_mutex_lock(&adev->lock);
        pthread_mutex_lock(&in->lock);
        if (val != 0) {
            if ((in->device & AUDIO_DEVICE_IN_ALL) != val)
                do_in_standby(in);

            /* set the active input device */
            in->device = val;
        }
        pthread_mutex_unlock(&in->lock);
        pthread_mutex_unlock(&adev->lock);
    }
    str_parms_destroy(parms);
    return 0;
}

static char * in_get_parameters(const struct audio_stream *stream,
                                const char *keys)
{
    UNUSED(stream);
    UNUSED(keys);
    /* As of now we dont support this operation */
    return strdup("");
}

static int in_set_gain(struct audio_stream_in *stream, float gain)
{
    UNUSED(stream);
    UNUSED(gain);
    /* As of now we dont support this operation */
    return 0;
}

static ssize_t in_read(struct audio_stream_in *stream, void* buffer,
                       size_t bytes)
{
    const struct audio_stream_in *s = (const struct audio_stream_in *)stream;
    struct j7_stream_in *in = (struct j7_stream_in *)(stream);
    struct j7_audio_device *adev = in->dev;
    const size_t frame_size = audio_stream_in_frame_size(stream);
    const size_t frames = bytes / frame_size;
    uint32_t rate = in_get_sample_rate(&stream->common);
    uint32_t read_usecs = frames * 1000000 / rate;
    int ret;

    ALOGV("in_read() stream=%p buffer=%p size=%zu/%u time=%u usecs",
           stream, buffer, frames, rate, read_usecs);

    pthread_mutex_lock(&adev->lock);
    pthread_mutex_lock(&in->lock);

    if (in->standby) {
        ALOGV("in_read() open card %u port %u", in->card, in->port);
        in->pcm = pcm_open(in->card, in->port,
                           PCM_IN | PCM_MONOTONIC,
                           &in->config);
        if (!pcm_is_ready(in->pcm)) {
            ALOGE("in_read() failed to open pcm in: %s", pcm_get_error(in->pcm));
            pcm_close(in->pcm);
            in->pcm = NULL;
            usleep(read_usecs); /* limits the rate of error messages */
            pthread_mutex_unlock(&in->lock);
            pthread_mutex_unlock(&adev->lock);
            return -ENODEV;
        }
        in->standby = false;
    }

    pthread_mutex_unlock(&adev->lock);
    ret = pcm_read(in->pcm, buffer, bytes);

    if (ret < 0) {
        ALOGE("in_read() failed to read audio data %d", ret);
        usleep(read_usecs); /* limits the rate of error messages */
        memset(buffer, 0, bytes);
    } else if (adev->mic_mute) {
        memset(buffer, 0, bytes);
    }

    pthread_mutex_unlock(&in->lock);

    return bytes;
}

static uint32_t in_get_input_frames_lost(struct audio_stream_in *stream)
{
    UNUSED(stream);
    ALOGV("in_get_input_frames_lost() stream=%p frames=%u", stream, 0);
    /* As of now we dont support this operation */
    return 0;
}

static int in_add_audio_effect(const struct audio_stream *stream, effect_handle_t effect)
{
    UNUSED(stream);
    UNUSED(effect);
    /* As of now we dont support this operation */
    return 0;
}

static int in_remove_audio_effect(const struct audio_stream *stream, effect_handle_t effect)
{
    UNUSED(stream);
    UNUSED(effect);
    /* As of now we dont support this operation */
    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)
{
    struct j7_audio_device *adev = (struct j7_audio_device *)dev;
    struct j7_stream_out *out;
    int buffer_size;
    int ret;

    UNUSED(handle);
    UNUSED(devices);
    UNUSED(address);

    out = (struct j7_stream_out *)calloc(1, sizeof(struct j7_stream_out));
    if (!out)
        return -ENOMEM;

    ALOGD("adev_open_output_stream() stream=%p rate=%u channels=%u "
          "format=0x%08x flags=0x%08x",
          out, config->sample_rate, popcount(config->channel_mask),
          config->format, flags);

    pthread_mutex_init(&out->lock, NULL);

    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->dev = adev;
    out->standby = true;
    out->config = pcm_config_playback;
    out->requested_rate = config->sample_rate;
    out->requested_channels = popcount(config->channel_mask);
    out->hw_frame_size = out->config.channels * BYTES_PER_SAMPLE;
    out->written = 0;
    out->card = adev->card;
    out->port = 0;
    out->device = devices;
    adev->out = out;
    *stream_out = &out->stream;

    return 0;
}

static void adev_close_output_stream(struct audio_hw_device *dev,
                                     struct audio_stream_out *stream)
{
    struct j7_audio_device *adev = (struct j7_audio_device *)dev;
    struct j7_stream_out *out = (struct j7_stream_out *)(stream);

    ALOGD("adev_close_output_stream() stream=%p", out);

    out_standby(&stream->common);

    free(out);
    adev->out = NULL;
}

static int adev_set_parameters(struct audio_hw_device *dev, const char *kvpairs)
{
    UNUSED(dev);
    UNUSED(kvpairs);

    ALOGV("adev_set_parameters() parameter='%s'", kvpairs);
    /* As of now we dont support this operation */
    return 0;
}

static char * adev_get_parameters(const struct audio_hw_device *dev,
                                  const char *keys)
{
    UNUSED(dev);
    UNUSED(keys);
    /* As of now we dont support this operation */
    return strdup("");;
}

static int adev_init_check(const struct audio_hw_device *dev)
{
    UNUSED(dev);
    /* As of now we dont support this operation */
    return 0;
}

static int adev_set_voice_volume(struct audio_hw_device *dev, float volume)
{
    UNUSED(dev);
    UNUSED(volume);
    /* As of now we dont support this operation */
    return 0;
}

static int adev_set_master_volume(struct audio_hw_device *dev, float volume)
{
    UNUSED(dev);
    UNUSED(volume);
    /* As of now we dont support this operation */
    return -ENOSYS;
}

static int adev_get_master_volume(struct audio_hw_device *dev, float *volume)
{
    UNUSED(dev);
    UNUSED(volume);
    /* As of now we dont support this operation */
    return -ENOSYS;
}

static int adev_set_master_mute(struct audio_hw_device *dev, bool muted)
{
    UNUSED(dev);
    UNUSED(muted);
    /* As of now we dont support this operation */
    return -ENOSYS;
}

static int adev_get_master_mute(struct audio_hw_device *dev, bool *muted)
{
    UNUSED(dev);
    UNUSED(muted);
    /* As of now we dont support this operation */
    return -ENOSYS;
}

static int adev_set_mode(struct audio_hw_device *dev, audio_mode_t mode)
{
    struct j7_audio_device *adev = (struct j7_audio_device *)dev;
    int ret = 0;

    ALOGV("adev_set_mode() mode=0x%08x", mode);

    pthread_mutex_lock(&adev->lock);

    if (adev->mode == mode) {
        ALOGV("adev_set_mode() already in mode=0x%08x", mode);
        goto out;
    }

    adev->mode = mode;

out:
    pthread_mutex_unlock(&adev->lock);

    return ret;
}

static int adev_set_mic_mute(struct audio_hw_device *dev, bool state)
{
    struct j7_audio_device *adev = (struct j7_audio_device *)dev;

    ALOGV("adev_set_mic_mute() state=%s", state ? "mute" : "unmute");
    adev->mic_mute = state;

    return 0;
}

static int adev_get_mic_mute(const struct audio_hw_device *dev, bool *state)
{
    const struct j7_audio_device *adev = (const struct j7_audio_device *)dev;

    *state = adev->mic_mute;
    ALOGV("adev_get_mic_mute() state=%s", *state ? "mute" : "unmute");

    return 0;
}

static size_t adev_get_input_buffer_size(const struct audio_hw_device *dev,
                                         const struct audio_config *config)
{
    UNUSED(dev);

    size_t bytes = get_input_buffer_size(config->sample_rate,
                                        config->format,
                                        popcount(config->channel_mask));

    ALOGV("adev_in_get_buffer_size() bytes=%zu", bytes);

    return bytes;
}

static int adev_open_input_stream(struct audio_hw_device *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,
                                  const char *address,
                                  audio_source_t source)
{
    struct j7_audio_device *adev = (struct j7_audio_device *)dev;
    struct j7_stream_in *in;
    int buffer_size;
    int ret;

    UNUSED(handle);
    UNUSED(flags);
    UNUSED(address);
    UNUSED(source);

    in = (struct j7_stream_in *)calloc(1, sizeof(struct j7_stream_in));
    if (!in)
        return -ENOMEM;

    ALOGD("adev_open_input_stream() stream=%p rate=%u channels=%u format=0x%08x",
          in, config->sample_rate, popcount(config->channel_mask), config->format);

    pthread_mutex_init(&in->lock, NULL);

    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;

    in->dev = adev;
    in->standby = true;
    in->config = pcm_config_capture;
    in->requested_rate = config->sample_rate;
    in->requested_channels = popcount(config->channel_mask);
    in->hw_frame_size = in->config.channels * BYTES_PER_SAMPLE;
    in->card = adev->card;
    in->port = 1;
    in->device = devices;
    adev->in = in;
    *stream_in = &in->stream;

    return 0;
}

static void adev_close_input_stream(struct audio_hw_device *dev,
                                   struct audio_stream_in *stream)
{
    struct j7_audio_device *adev = (struct j7_audio_device *)dev;
    struct j7_stream_in *in = (struct j7_stream_in *)(stream);

    ALOGD("adev_close_input_stream() stream=%p", stream);

    in_standby(&stream->common);

    free(in);
    adev->in = NULL;
}

static int adev_dump(const audio_hw_device_t *device, int fd)
{
    UNUSED(device);
    UNUSED(fd);
    /* As of now nothing to dump any debug data */
    return 0;
}

static int adev_close(hw_device_t *device)
{
    struct j7_audio_device *adev = (struct j7_audio_device *)device;

    ALOGI("adev_close()");

    audio_route_free(adev->route);

    free(device);

    return 0;
}

static int adev_open(const hw_module_t* module, const char* name,
                     hw_device_t** device)
{
    struct j7_audio_device *adev;

    ALOGI("adev_open() %s", name);

    if (strcmp(name, AUDIO_HARDWARE_INTERFACE) != 0)
        return -EINVAL;

    adev = (struct j7_audio_device*)calloc(1, sizeof(struct j7_audio_device));
    if (!adev)
        return -ENOMEM;

    pthread_mutex_init(&adev->lock, NULL);

    adev->device.common.tag = HARDWARE_DEVICE_TAG;
    adev->device.common.version = AUDIO_DEVICE_API_VERSION_2_0;
    adev->device.common.module = (struct hw_module_t *) module;
    adev->device.common.close = adev_close;
    adev->device.init_check = adev_init_check;
    adev->device.set_voice_volume = adev_set_voice_volume;
    adev->device.set_master_volume = adev_set_master_volume;
    adev->device.get_master_volume = adev_get_master_volume;
    adev->device.set_master_mute = adev_set_master_mute;
    adev->device.get_master_mute = adev_get_master_mute;
    adev->device.set_mode = adev_set_mode;
    adev->device.set_mic_mute = adev_set_mic_mute;
    adev->device.get_mic_mute = adev_get_mic_mute;
    adev->device.set_parameters = adev_set_parameters;
    adev->device.get_parameters = adev_get_parameters;
    adev->device.get_input_buffer_size = adev_get_input_buffer_size;
    adev->device.open_output_stream = adev_open_output_stream;
    adev->device.close_output_stream = adev_close_output_stream;
    adev->device.open_input_stream = adev_open_input_stream;
    adev->device.close_input_stream = adev_close_input_stream;
    adev->device.dump = adev_dump;
    adev->card = 0;

    ALOGI("adev_open() media card is hw:%d", adev->card);

    adev->mic_mute = false;

    adev->mode = AUDIO_MODE_NORMAL;

    adev->route = audio_route_init(adev->card, MIXER_XML_PATH);
    if (!adev->route) {
        ALOGE("adev_open() unable to initialize audio routes");
        goto err1;
    }

    *device = &adev->device.common;

    return 0;

    audio_route_free(adev->route);
 err1:
    free(adev);
    return -ENODEV;
}

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 = "Jacinto7 Audio HAL",
        .author = "Texas Instruments Inc.",
        .methods = &hal_module_methods,
    },
};