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//
// Copyright (C) 2020 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.
#pragma once
#include <atomic>
#include <type_traits>
#include "common/libs/utils/cf_endian.h"
namespace cuttlefish {
// TODO (b/175151042): get these from the kernel headers when available
enum class AudioCommandType : uint32_t {
/* jack control request types */
VIRTIO_SND_R_JACK_INFO = 1,
VIRTIO_SND_R_JACK_REMAP,
/* PCM control request types */
VIRTIO_SND_R_PCM_INFO = 0x0100,
VIRTIO_SND_R_PCM_SET_PARAMS,
VIRTIO_SND_R_PCM_PREPARE,
VIRTIO_SND_R_PCM_RELEASE,
VIRTIO_SND_R_PCM_START,
VIRTIO_SND_R_PCM_STOP,
/* channel map control request types */
VIRTIO_SND_R_CHMAP_INFO = 0x0200,
};
enum class AudioStatus : uint32_t {
/* common status codes */
VIRTIO_SND_S_OK = 0x8000,
VIRTIO_SND_S_BAD_MSG,
VIRTIO_SND_S_NOT_SUPP,
VIRTIO_SND_S_IO_ERR,
// Not a virtio constant, but it's only used internally as an invalid value so
// it's safe.
NOT_SET = static_cast<uint32_t>(-1),
};
enum class AudioStreamDirection : uint32_t {
VIRTIO_SND_D_OUTPUT = 0,
VIRTIO_SND_D_INPUT
};
enum class AudioStreamFormat : uint8_t {
/* analog formats (width / physical width) */
VIRTIO_SND_PCM_FMT_IMA_ADPCM = 0, /* 4 / 4 bits */
VIRTIO_SND_PCM_FMT_MU_LAW, /* 8 / 8 bits */
VIRTIO_SND_PCM_FMT_A_LAW, /* 8 / 8 bits */
VIRTIO_SND_PCM_FMT_S8, /* 8 / 8 bits */
VIRTIO_SND_PCM_FMT_U8, /* 8 / 8 bits */
VIRTIO_SND_PCM_FMT_S16, /* 16 / 16 bits */
VIRTIO_SND_PCM_FMT_U16, /* 16 / 16 bits */
VIRTIO_SND_PCM_FMT_S18_3, /* 18 / 24 bits */
VIRTIO_SND_PCM_FMT_U18_3, /* 18 / 24 bits */
VIRTIO_SND_PCM_FMT_S20_3, /* 20 / 24 bits */
VIRTIO_SND_PCM_FMT_U20_3, /* 20 / 24 bits */
VIRTIO_SND_PCM_FMT_S24_3, /* 24 / 24 bits */
VIRTIO_SND_PCM_FMT_U24_3, /* 24 / 24 bits */
VIRTIO_SND_PCM_FMT_S20, /* 20 / 32 bits */
VIRTIO_SND_PCM_FMT_U20, /* 20 / 32 bits */
VIRTIO_SND_PCM_FMT_S24, /* 24 / 32 bits */
VIRTIO_SND_PCM_FMT_U24, /* 24 / 32 bits */
VIRTIO_SND_PCM_FMT_S32, /* 32 / 32 bits */
VIRTIO_SND_PCM_FMT_U32, /* 32 / 32 bits */
VIRTIO_SND_PCM_FMT_FLOAT, /* 32 / 32 bits */
VIRTIO_SND_PCM_FMT_FLOAT64, /* 64 / 64 bits */
/* digital formats (width / physical width) */
VIRTIO_SND_PCM_FMT_DSD_U8, /* 8 / 8 bits */
VIRTIO_SND_PCM_FMT_DSD_U16, /* 16 / 16 bits */
VIRTIO_SND_PCM_FMT_DSD_U32, /* 32 / 32 bits */
VIRTIO_SND_PCM_FMT_IEC958_SUBFRAME /* 32 / 32 bits */
};
/* supported PCM frame rates */
enum AudioStreamRate : uint8_t {
VIRTIO_SND_PCM_RATE_5512 = 0,
VIRTIO_SND_PCM_RATE_8000,
VIRTIO_SND_PCM_RATE_11025,
VIRTIO_SND_PCM_RATE_16000,
VIRTIO_SND_PCM_RATE_22050,
VIRTIO_SND_PCM_RATE_32000,
VIRTIO_SND_PCM_RATE_44100,
VIRTIO_SND_PCM_RATE_48000,
VIRTIO_SND_PCM_RATE_64000,
VIRTIO_SND_PCM_RATE_88200,
VIRTIO_SND_PCM_RATE_96000,
VIRTIO_SND_PCM_RATE_176400,
VIRTIO_SND_PCM_RATE_192000,
VIRTIO_SND_PCM_RATE_384000
};
struct virtio_snd_hdr {
Le32 code;
};
struct virtio_snd_query_info {
struct virtio_snd_hdr hdr;
Le32 start_id;
Le32 count;
Le32 size; // unused
};
struct virtio_snd_info {
Le32 hda_fn_nid;
};
struct virtio_snd_pcm_info {
struct virtio_snd_info hdr;
Le32 features; /* 1 << VIRTIO_SND_PCM_F_XXX */
Le64 formats; /* 1 << VIRTIO_SND_PCM_FMT_XXX */
Le64 rates; /* 1 << VIRTIO_SND_PCM_RATE_XXX */
uint8_t direction;
uint8_t channels_min;
uint8_t channels_max;
uint8_t padding[5];
};
struct virtio_snd_pcm_hdr {
struct virtio_snd_hdr hdr;
Le32 stream_id;
};
struct virtio_snd_pcm_set_params {
struct virtio_snd_pcm_hdr hdr;
Le32 buffer_bytes;
Le32 period_bytes;
Le32 features; /* 1 << VIRTIO_SND_PCM_F_XXX */
uint8_t channels;
uint8_t format;
uint8_t rate;
uint8_t padding;
};
struct virtio_snd_pcm_xfer {
Le32 stream_id;
};
struct virtio_snd_pcm_status {
Le32 status;
Le32 latency_bytes;
};
// Update this value when the msg layouts change
const uint32_t VIOS_VERSION = 1;
struct VioSConfig {
uint32_t version;
uint32_t jacks;
uint32_t streams;
uint32_t chmaps;
};
struct IoTransferMsg {
virtio_snd_pcm_xfer io_xfer;
uint32_t buffer_offset;
uint32_t buffer_len;
};
struct IoStatusMsg {
virtio_snd_pcm_status status;
uint32_t buffer_offset;
uint32_t consumed_length;
};
// Ensure all message structs have predictable sizes
#define ASSERT_VALID_MSG_TYPE(T, size) \
static_assert(sizeof(T) == (size), #T " has the wrong size")
ASSERT_VALID_MSG_TYPE(virtio_snd_query_info, 16);
ASSERT_VALID_MSG_TYPE(virtio_snd_pcm_info, 32);
ASSERT_VALID_MSG_TYPE(virtio_snd_pcm_set_params, 24);
ASSERT_VALID_MSG_TYPE(virtio_snd_pcm_hdr, 8);
ASSERT_VALID_MSG_TYPE(IoTransferMsg, 12);
ASSERT_VALID_MSG_TYPE(IoStatusMsg, 16);
#undef ASSERT_VALID_MSG_TYPE
} // namespace cuttlefish
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