Mirrored_Repos/LookingGlass
1
0
Fork 0
mirror of https://github.com/gnif/LookingGlass.git synced 2026-11-13 07:17:28 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

[idd] audio: support 32-bit and common channel layouts

Browse Source 
Advertise signed and floating-point 32-bit formats across mono,
stereo, quad, surround, 5.1, and 7.1 at every supported rate.

Carry sample encoding through the broker and LGMP protocol so integer
and floating-point streams remain distinct.

Expand packet, shared-memory, and ring capacity for eight-channel
32-bit audio.
This commit is contained in:
Geoffrey McRae
2026-09-05 07:39:32 +10:00
parent 5681dcdbe7
commit efc9952e74
13 changed files with 444 additions and 170 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
idd/LGCommon/LGAudioBroker.h
View File

@@ -43,7 +43,7 @@ static const GUID LGAUDIO_BROKER_DEVICE_CLASS_GUID =
{ 0x98f877f1, 0x73d6, 0x4429,
{ 0xb4, 0x90, 0x28, 0xc5, 0x30, 0xd2, 0x38, 0xcd } };
static constexpr UINT32 LGAUDIO_BROKER_ABI_VERSION = 1U;
static constexpr UINT32 LGAUDIO_BROKER_ABI_VERSION = 2U;
// The transfer limits in LGAudioBrokerCaps exclude the packet header.
static constexpr UINT32 LGAUDIO_BROKER_MAX_PAYLOAD_BYTES = 64U * 1024U;
@@ -87,6 +87,14 @@ enum LGAudioBrokerPacketFlag : UINT32
LGAUDIO_BROKER_PACKET_DISCONTINUITY = 1U << 0
};
enum LGAudioBrokerSampleFormat : UINT32
{
LGAUDIO_BROKER_SAMPLE_S16_LE = 1,
LGAUDIO_BROKER_SAMPLE_S24_LE = 2,
LGAUDIO_BROKER_SAMPLE_S32_LE = 3,
LGAUDIO_BROKER_SAMPLE_F32_LE = 4
};
static constexpr UINT32 IOCTL_LGAUDIO_BROKER_QUERY_CAPS =
CTL_CODE(FILE_DEVICE_UNKNOWN, 0x900, METHOD_BUFFERED,
FILE_READ_ACCESS | FILE_WRITE_ACCESS);
@@ -116,12 +124,14 @@ struct LGAudioBrokerHeader
struct LGAudioBrokerFormat
{
UINT32 sampleFormat;
UINT32 sampleRate;
UINT32 channelMask;
UINT16 channels;
UINT16 containerBits;
UINT16 validBits;
UINT16 blockAlign;
UINT32 reserved;
};
struct LGAudioBrokerStreamState
@@ -230,15 +240,15 @@ struct LGAudioBrokerClockControl
static_assert(sizeof(LGAudioBrokerHeader) == 8,
"LGAudio broker header layout changed");
static_assert(sizeof(LGAudioBrokerFormat) == 16,
static_assert(sizeof(LGAudioBrokerFormat) == 24,
"LGAudio broker format layout changed");
static_assert(sizeof(LGAudioBrokerStreamState) == 32,
static_assert(sizeof(LGAudioBrokerStreamState) == 40,
"LGAudio broker stream-state layout changed");
static_assert(sizeof(LGAudioBrokerPacketHeader) == 80,
static_assert(sizeof(LGAudioBrokerPacketHeader) == 88,
"LGAudio broker packet layout changed");
static_assert(sizeof(LGAudioBrokerCaps) == 64,
"LGAudio broker capabilities layout changed");
static_assert(sizeof(LGAudioBrokerState) == 104,
static_assert(sizeof(LGAudioBrokerState) == 120,
"LGAudio broker state layout changed");
static_assert(sizeof(LGAudioBrokerBind) == 48,
"LGAudio broker binding layout changed");
@@ -247,5 +257,5 @@ static_assert(sizeof(LGAudioBrokerStats) == 160,
static_assert(sizeof(LGAudioBrokerClockControl) == 64,
"LGAudio broker clock-control layout changed");
static_assert(LGAUDIO_BROKER_MAX_PAYLOAD_BYTES >=
(192000U / 100U) * 8U * 3U,
(192000U / 100U) * 8U * 4U,
"LGAudio broker payload cannot hold 10 ms at the maximum format");