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Commit e4f4f12f authored by Dhananjay Kumar's avatar Dhananjay Kumar
Browse files

audio: mpq: enable volume control for offload playback 

Enable set_compress_volume to apply volume on offload
playback sessions.

Change-Id: I89631dff192f02988b7613ae07b5b112e420c287
parent 60d65d1d

hal_mpq/audio_stream_out.c

+9 −13
Original line number Diff line number Diff line
@@ -1051,23 +1051,19 @@ static int configure_compr(struct stream_out *out, 
}



/*TODO: do we need to apply volume at the session open*/

static int set_compress_volume(struct alsa_handle *handle, int left, int right)

static int set_compress_volume(struct alsa_handle *handle, float left, float right)

{



    struct audio_device *adev = handle->out->dev;

    struct mixer_ctl *ctl;

    int volume[2];



    char mixer_ctl_name[44]; // max length of name is 44 as defined

    char device_id[STRING_LENGTH_OF_INTEGER+1];

    char mixer_ctl_name[MIXER_PATH_MAX_LENGTH];

    ALOGV("%s:setting volume l %f r %f ", __func__, left, right);



    memset(mixer_ctl_name, 0, sizeof(mixer_ctl_name));

    strlcpy(mixer_ctl_name, "Compress Playback Volume", sizeof(mixer_ctl_name));



    memset(device_id, 0, sizeof(device_id));

    snprintf(device_id, "%d", handle->device_id, sizeof(device_id));



    strlcat(mixer_ctl_name, device_id, sizeof(mixer_ctl_name));

    snprintf(mixer_ctl_name, sizeof(mixer_ctl_name),

          "Compress Playback %d Volume", handle->device_id);



    ctl = mixer_get_ctl_by_name(adev->mixer, mixer_ctl_name);

    if (!ctl) {
@@ -1075,8 +1071,8 @@ static int set_compress_volume(struct alsa_handle *handle, int left, int right) 
                __func__, mixer_ctl_name);

        return -EINVAL;

    }

    volume[0] = (int)(left * COMPRESS_PLAYBACK_VOLUME_MAX);

    volume[1] = (int)(right * COMPRESS_PLAYBACK_VOLUME_MAX);

    volume[0] = (int)(left * (float) COMPRESS_PLAYBACK_VOLUME_MAX);

    volume[1] = (int)(right * (float) COMPRESS_PLAYBACK_VOLUME_MAX);

    mixer_ctl_set_array(ctl, volume, sizeof(volume)/sizeof(volume[0]));



    return 0;
@@ -2105,7 +2101,7 @@ static int out_set_volume(struct audio_stream_out *stream, float left, 
    struct alsa_handle *handle;

    struct audio_device *adev = out->dev;

    int ret = -ENOSYS;

    ALOGV("%s", __func__);

    ALOGV("%s:setting volume l %f r %f ", __func__, left, right);

    pthread_mutex_lock(&out->lock);

    list_for_each(node, &out->session_list) {

        handle = node_to_item(node, struct alsa_handle, list);
@@ -2118,7 +2114,7 @@ static int out_set_volume(struct audio_stream_out *stream, float left, 
            out->left_volume = left;

            out->right_volume = right;



            //ret = set_compress_volume(handle, left, right);

            ret = set_compress_volume(handle, left, right);

        }

    }

    pthread_mutex_unlock(&out->lock);