1 /*

     2  * Virtio Audio Device Header

     3  *

     4  * Copyright 2009 CodeSourcery

     5  *

     6  * Permission is hereby granted, free of charge, to any person obtaining a copy

     7  * of this software and associated documentation files (the "Software"), to deal

     8  * in the Software without restriction, including without limitation the rights

     9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

    10  * copies of the Software, and to permit persons to whom the Software is

    11  * furnished to do so, subject to the following conditions:

    12  *

    13  * The above copyright notice and this permission notice shall be included in

    14  * all copies or substantial portions of the Software.

    15  *

    16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

    17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

    18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL

    19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

    20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

    21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

    22  * THE SOFTWARE.

    23  */

    24 

    25 #include "virtio.h"

    26 #include "audio/audio.h"

    27 

    28 #define VIRTIO_ID_AUDIO 0xffff

    29 

    30 #define VIRTIO_AUDIO_CMD_SET_ENDIAN   1

    31 #define VIRTIO_AUDIO_CMD_SET_CHANNELS 2

    32 #define VIRTIO_AUDIO_CMD_SET_FMT      3

    33 #define VIRTIO_AUDIO_CMD_SET_FREQ     4

    34 #define VIRTIO_AUDIO_CMD_INIT         5

    35 #define VIRTIO_AUDIO_CMD_RUN          6

    36 

    37 struct virtio_audio_cmd {

    38     uint32_t cmd;

    39     uint32_t stream;

    40     uint32_t arg;

    41 };

    42 

    43 struct virtio_audio_cfg {

    44     uint8_t num_streams;

    45 };

    46 

    47 void virtio_audio_init(VirtIOBindFn bind, void *bind_arg, AudioState *audio);