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Commit df05eea6 authored by Derek Chen's avatar Derek Chen
Browse files

hal: add rear seat playback support for automotive 

Add rear seat playback support for multi-zone
audio support on automotive platform.

Change-Id: Ia3d4c4a4f78950e99a8d4955e910cc8902b6bb17
parent 538f5d66

hal/audio_extn/audio_extn.h

+3 −0
Original line number Diff line number Diff line
@@ -1286,6 +1286,9 @@ int audio_extn_utils_get_license_params(const struct audio_device *adev, struct 
#ifndef AUDIO_OUTPUT_FLAG_PHONE

#define AUDIO_OUTPUT_FLAG_PHONE 0x800000

#endif

#ifndef AUDIO_OUTPUT_FLAG_REAR_SEAT

#define AUDIO_OUTPUT_FLAG_REAR_SEAT 0x1000000

#endif

int audio_extn_auto_hal_init(struct audio_device *adev);

void audio_extn_auto_hal_deinit(void);

int audio_extn_auto_hal_create_audio_patch(struct audio_hw_device *dev,

hal/audio_extn/auto_hal.c

+17 −0
Original line number Diff line number Diff line
@@ -89,6 +89,7 @@ static const audio_usecase_t bus_device_usecases[] = { 
    USECASE_AUDIO_PLAYBACK_SYS_NOTIFICATION,

    USECASE_AUDIO_PLAYBACK_NAV_GUIDANCE,

    USECASE_AUDIO_PLAYBACK_PHONE,

    USECASE_AUDIO_PLAYBACK_REAR_SEAT,

};



int auto_hal_release_audio_patch(struct audio_hw_device *dev,
@@ -505,6 +506,19 @@ int auto_hal_open_output_stream(struct stream_out *out) 
        if (out->flags == AUDIO_OUTPUT_FLAG_NONE)

            out->flags |= AUDIO_OUTPUT_FLAG_PHONE;

        break;

    case CAR_AUDIO_STREAM_REAR_SEAT:

        out->usecase = USECASE_AUDIO_PLAYBACK_REAR_SEAT;

        out->config = pcm_config_deep_buffer;

        out->config.period_size = fp_get_output_period_size(out->sample_rate, out->format,

                                        channels, DEEP_BUFFER_OUTPUT_PERIOD_DURATION);

        if (out->config.period_size <= 0) {

            ALOGE("Invalid configuration period size is not valid");

            ret = -EINVAL;

            goto error;

        }

        if (out->flags == AUDIO_OUTPUT_FLAG_NONE)

            out->flags |= AUDIO_OUTPUT_FLAG_REAR_SEAT;

        break;

    default:

        ALOGE("%s: Car audio stream %x not supported", __func__,

            out->car_audio_stream);
@@ -543,6 +557,9 @@ snd_device_t auto_hal_get_snd_device_for_car_audio_stream(struct stream_out *out 
    case CAR_AUDIO_STREAM_PHONE:

        snd_device = SND_DEVICE_OUT_BUS_PHN;

        break;

    case CAR_AUDIO_STREAM_REAR_SEAT:

        snd_device = SND_DEVICE_OUT_BUS_RSE;

        break;

    default:

        ALOGE("%s: Unknown car audio stream (%x)",

            __func__, out->car_audio_stream);

hal/audio_extn/utils.c

+1 −0
Original line number Diff line number Diff line
@@ -150,6 +150,7 @@ const struct string_to_enum s_flag_name_to_enum_table[] = { 
    STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_SYS_NOTIFICATION),

    STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_NAV_GUIDANCE),

    STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_PHONE),

    STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_REAR_SEAT),

    STRING_TO_ENUM(AUDIO_INPUT_FLAG_NONE),

    STRING_TO_ENUM(AUDIO_INPUT_FLAG_FAST),

    STRING_TO_ENUM(AUDIO_INPUT_FLAG_HW_HOTWORD),

hal/audio_hw.c

+2 −2
Original line number Diff line number Diff line
@@ -406,6 +406,7 @@ const char * const use_case_table[AUDIO_USECASE_MAX] = { 
    [USECASE_AUDIO_PLAYBACK_SYS_NOTIFICATION] = "sys-notification-playback",

    [USECASE_AUDIO_PLAYBACK_NAV_GUIDANCE] = "nav-guidance-playback",

    [USECASE_AUDIO_PLAYBACK_PHONE] = "phone-playback",

    [USECASE_AUDIO_PLAYBACK_REAR_SEAT] = "rear-seat-playback",

    [USECASE_AUDIO_FM_TUNER_EXT] = "fm-tuner-ext",

};
@@ -5140,8 +5141,7 @@ static int out_set_volume(struct audio_stream_out *stream, float left, 
            mixer_ctl_set_array(ctl, volume, sizeof(volume)/sizeof(volume[0]));

            return 0;

        } else if ((out->devices & AUDIO_DEVICE_OUT_BUS) &&

                (audio_extn_auto_hal_get_snd_device_for_car_audio_stream(out) ==

                    SND_DEVICE_OUT_BUS_MEDIA)) {

                (out->car_audio_stream == CAR_AUDIO_STREAM_MEDIA)) {

            ALOGD("%s: Overriding offload set volume for media bus stream", __func__);

            struct listnode *node = NULL;

            list_for_each(node, &adev->active_outputs_list) {

hal/audio_hw.h

+5 −3
Original line number Diff line number Diff line
@@ -227,6 +227,7 @@ enum { 
    USECASE_AUDIO_PLAYBACK_SYS_NOTIFICATION,

    USECASE_AUDIO_PLAYBACK_NAV_GUIDANCE,

    USECASE_AUDIO_PLAYBACK_PHONE,

    USECASE_AUDIO_PLAYBACK_REAR_SEAT,



    /*Audio FM Tuner usecase*/

    USECASE_AUDIO_FM_TUNER_EXT,
@@ -300,15 +301,16 @@ typedef enum render_mode { 


/* This defines the physical car streams supported in audio HAL,

 * limited by the available frontend PCM driver.

 * Max number of physical streams supported is currently 8 and is

 * represented by stream bit flag as indicated in vehicle HAL interface.

 * Max number of physical streams supported is currently 16 and is

 * represented by stream bit flag.

 */

#define MAX_CAR_AUDIO_STREAMS    8

#define MAX_CAR_AUDIO_STREAMS    16

enum {

    CAR_AUDIO_STREAM_MEDIA            = 0x1,

    CAR_AUDIO_STREAM_SYS_NOTIFICATION = 0x2,

    CAR_AUDIO_STREAM_NAV_GUIDANCE     = 0x4,

    CAR_AUDIO_STREAM_PHONE            = 0x8,

    CAR_AUDIO_STREAM_REAR_SEAT        = 0x100,

};



struct stream_app_type_cfg {