400 lines
14 KiB
C++
400 lines
14 KiB
C++
/**
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******************************************************************************
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* Xenia : Xbox 360 Emulator Research Project *
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******************************************************************************
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* Copyright 2022 Ben Vanik. All rights reserved. *
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* Released under the BSD license - see LICENSE in the root for more details. *
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******************************************************************************
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*/
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#include "xenia/apu/audio_system.h"
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#include "xenia/apu/xma_decoder.h"
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#include "xenia/base/logging.h"
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#include "xenia/emulator.h"
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#include "xenia/kernel/kernel_state.h"
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#include "xenia/kernel/util/shim_utils.h"
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#include "xenia/kernel/xboxkrnl/xboxkrnl_private.h"
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#include "xenia/xbox.h"
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namespace xe {
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namespace kernel {
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namespace xboxkrnl {
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using xe::apu::XMA_CONTEXT_DATA;
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// See audio_system.cc for implementation details.
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//
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// XMA details:
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// https://devel.nuclex.org/external/svn/directx/trunk/include/xma2defs.h
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// https://github.com/gdawg/fsbext/blob/master/src/xma_header.h
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//
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// XMA is undocumented, but the methods are pretty simple.
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// Games do this sequence to decode (now):
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// (not sure we are setting buffer validity/offsets right)
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// d> XMACreateContext(20656800)
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// d> XMAIsInputBuffer0Valid(000103E0)
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// d> XMAIsInputBuffer1Valid(000103E0)
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// d> XMADisableContext(000103E0, 0)
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// d> XMABlockWhileInUse(000103E0)
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// d> XMAInitializeContext(000103E0, 20008810)
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// d> XMASetOutputBufferValid(000103E0)
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// d> XMASetInputBuffer0Valid(000103E0)
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// d> XMAEnableContext(000103E0)
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// d> XMAGetOutputBufferWriteOffset(000103E0)
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// d> XMAGetOutputBufferReadOffset(000103E0)
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// d> XMAIsOutputBufferValid(000103E0)
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// d> XMAGetOutputBufferReadOffset(000103E0)
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// d> XMAGetOutputBufferWriteOffset(000103E0)
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// d> XMAIsInputBuffer0Valid(000103E0)
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// d> XMAIsInputBuffer1Valid(000103E0)
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// d> XMAIsInputBuffer0Valid(000103E0)
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// d> XMAIsInputBuffer1Valid(000103E0)
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// d> XMAReleaseContext(000103E0)
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//
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// XAudio2 uses XMA under the covers, and seems to map with the same
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// restrictions of frame/subframe/etc:
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// https://msdn.microsoft.com/en-us/library/windows/desktop/microsoft.directx_sdk.xaudio2.xaudio2_buffer(v=vs.85).aspx
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dword_result_t XMACreateContext_entry(lpdword_t context_out_ptr) {
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auto xma_decoder = kernel_state()->emulator()->audio_system()->xma_decoder();
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uint32_t context_ptr = xma_decoder->AllocateContext();
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*context_out_ptr = context_ptr;
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if (!context_ptr) {
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return X_STATUS_NO_MEMORY;
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}
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return X_STATUS_SUCCESS;
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}
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DECLARE_XBOXKRNL_EXPORT2(XMACreateContext, kAudio, kImplemented,
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kHighFrequency);
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dword_result_t XMAReleaseContext_entry(lpvoid_t context_ptr) {
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auto xma_decoder = kernel_state()->emulator()->audio_system()->xma_decoder();
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xma_decoder->ReleaseContext(context_ptr);
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return 0;
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}
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DECLARE_XBOXKRNL_EXPORT2(XMAReleaseContext, kAudio, kImplemented,
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kHighFrequency);
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void StoreXmaContextIndexedRegister(KernelState* kernel_state,
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uint32_t base_reg, uint32_t context_ptr) {
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uint32_t context_physical_address =
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kernel_memory()->GetPhysicalAddress(context_ptr);
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assert_true(context_physical_address != UINT32_MAX);
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auto xma_decoder = kernel_state->emulator()->audio_system()->xma_decoder();
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uint32_t hw_index =
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(context_physical_address - xma_decoder->context_array_ptr()) /
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sizeof(XMA_CONTEXT_DATA);
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uint32_t reg_num = base_reg + (hw_index >> 5) * 4;
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uint32_t reg_value = 1 << (hw_index & 0x1F);
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xma_decoder->WriteRegister(reg_num, xe::byte_swap(reg_value));
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}
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struct XMA_LOOP_DATA {
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xe::be<uint32_t> loop_start;
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xe::be<uint32_t> loop_end;
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uint8_t loop_count;
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uint8_t loop_subframe_end;
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uint8_t loop_subframe_skip;
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};
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static_assert_size(XMA_LOOP_DATA, 12);
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struct XMA_CONTEXT_INIT {
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xe::be<uint32_t> input_buffer_0_ptr;
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xe::be<uint32_t> input_buffer_0_packet_count;
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xe::be<uint32_t> input_buffer_1_ptr;
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xe::be<uint32_t> input_buffer_1_packet_count;
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xe::be<uint32_t> input_buffer_read_offset;
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xe::be<uint32_t> output_buffer_ptr;
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xe::be<uint32_t> output_buffer_block_count;
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xe::be<uint32_t> work_buffer;
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xe::be<uint32_t> subframe_decode_count;
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xe::be<uint32_t> channel_count;
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xe::be<uint32_t> sample_rate;
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XMA_LOOP_DATA loop_data;
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};
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static_assert_size(XMA_CONTEXT_INIT, 56);
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dword_result_t XMAInitializeContext_entry(
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lpvoid_t context_ptr, pointer_t<XMA_CONTEXT_INIT> context_init) {
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// Input buffers may be null (buffer 1 in 415607D4).
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// Convert to host endianness.
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uint32_t input_buffer_0_guest_ptr = context_init->input_buffer_0_ptr;
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uint32_t input_buffer_0_physical_address = 0;
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if (input_buffer_0_guest_ptr) {
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input_buffer_0_physical_address =
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kernel_memory()->GetPhysicalAddress(input_buffer_0_guest_ptr);
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// Xenia-specific safety check.
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assert_true(input_buffer_0_physical_address != UINT32_MAX);
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if (input_buffer_0_physical_address == UINT32_MAX) {
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XELOGE(
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"XMAInitializeContext: Invalid input buffer 0 virtual address {:08X}",
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input_buffer_0_guest_ptr);
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return X_E_FALSE;
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}
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}
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uint32_t input_buffer_1_guest_ptr = context_init->input_buffer_1_ptr;
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uint32_t input_buffer_1_physical_address = 0;
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if (input_buffer_1_guest_ptr) {
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input_buffer_1_physical_address =
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kernel_memory()->GetPhysicalAddress(input_buffer_1_guest_ptr);
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assert_true(input_buffer_1_physical_address != UINT32_MAX);
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if (input_buffer_1_physical_address == UINT32_MAX) {
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XELOGE(
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"XMAInitializeContext: Invalid input buffer 1 virtual address {:08X}",
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input_buffer_1_guest_ptr);
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return X_E_FALSE;
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}
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}
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uint32_t output_buffer_guest_ptr = context_init->output_buffer_ptr;
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assert_not_zero(output_buffer_guest_ptr);
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uint32_t output_buffer_physical_address =
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kernel_memory()->GetPhysicalAddress(output_buffer_guest_ptr);
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assert_true(output_buffer_physical_address != UINT32_MAX);
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if (output_buffer_physical_address == UINT32_MAX) {
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XELOGE("XMAInitializeContext: Invalid output buffer virtual address {:08X}",
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output_buffer_guest_ptr);
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return X_E_FALSE;
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}
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std::memset(context_ptr, 0, sizeof(XMA_CONTEXT_DATA));
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XMA_CONTEXT_DATA context(context_ptr);
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context.input_buffer_0_ptr = input_buffer_0_physical_address;
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context.input_buffer_0_packet_count =
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context_init->input_buffer_0_packet_count;
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context.input_buffer_1_ptr = input_buffer_1_physical_address;
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context.input_buffer_1_packet_count =
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context_init->input_buffer_1_packet_count;
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context.input_buffer_read_offset = context_init->input_buffer_read_offset;
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context.output_buffer_ptr = output_buffer_physical_address;
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context.output_buffer_block_count = context_init->output_buffer_block_count;
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// context.work_buffer = context_init->work_buffer; // ?
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context.subframe_decode_count = context_init->subframe_decode_count;
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context.is_stereo = context_init->channel_count >= 1;
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context.sample_rate = context_init->sample_rate;
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context.loop_start = context_init->loop_data.loop_start;
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context.loop_end = context_init->loop_data.loop_end;
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context.loop_count = context_init->loop_data.loop_count;
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context.loop_subframe_end = context_init->loop_data.loop_subframe_end;
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context.loop_subframe_skip = context_init->loop_data.loop_subframe_skip;
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context.Store(context_ptr);
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StoreXmaContextIndexedRegister(kernel_state(), 0x1A80, context_ptr);
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return 0;
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}
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DECLARE_XBOXKRNL_EXPORT2(XMAInitializeContext, kAudio, kImplemented,
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kHighFrequency);
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dword_result_t XMASetLoopData_entry(lpvoid_t context_ptr,
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pointer_t<XMA_LOOP_DATA> loop_data) {
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XMA_CONTEXT_DATA context(context_ptr);
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context.loop_start = loop_data->loop_start;
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context.loop_end = loop_data->loop_end;
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context.loop_count = loop_data->loop_count;
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context.loop_subframe_end = loop_data->loop_subframe_end;
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context.loop_subframe_skip = loop_data->loop_subframe_skip;
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context.Store(context_ptr);
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return 0;
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}
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DECLARE_XBOXKRNL_EXPORT2(XMASetLoopData, kAudio, kImplemented, kHighFrequency);
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dword_result_t XMAGetInputBufferReadOffset_entry(lpvoid_t context_ptr) {
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XMA_CONTEXT_DATA context(context_ptr);
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return context.input_buffer_read_offset;
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}
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DECLARE_XBOXKRNL_EXPORT2(XMAGetInputBufferReadOffset, kAudio, kImplemented,
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kHighFrequency);
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dword_result_t XMASetInputBufferReadOffset_entry(lpvoid_t context_ptr,
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dword_t value) {
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XMA_CONTEXT_DATA context(context_ptr);
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context.input_buffer_read_offset = value;
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context.Store(context_ptr);
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return 0;
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}
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DECLARE_XBOXKRNL_EXPORT2(XMASetInputBufferReadOffset, kAudio, kImplemented,
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kHighFrequency);
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dword_result_t XMASetInputBuffer0_entry(lpvoid_t context_ptr, lpvoid_t buffer,
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dword_t packet_count) {
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uint32_t buffer_physical_address =
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kernel_memory()->GetPhysicalAddress(buffer.guest_address());
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assert_true(buffer_physical_address != UINT32_MAX);
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if (buffer_physical_address == UINT32_MAX) {
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// Xenia-specific safety check.
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XELOGE("XMASetInputBuffer0: Invalid buffer virtual address {:08X}",
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buffer.guest_address());
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return X_E_FALSE;
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}
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XMA_CONTEXT_DATA context(context_ptr);
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context.input_buffer_0_ptr = buffer_physical_address;
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context.input_buffer_0_packet_count = packet_count;
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context.Store(context_ptr);
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return 0;
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}
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DECLARE_XBOXKRNL_EXPORT2(XMASetInputBuffer0, kAudio, kImplemented,
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kHighFrequency);
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dword_result_t XMAIsInputBuffer0Valid_entry(lpvoid_t context_ptr) {
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XMA_CONTEXT_DATA context(context_ptr);
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return context.input_buffer_0_valid;
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}
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DECLARE_XBOXKRNL_EXPORT2(XMAIsInputBuffer0Valid, kAudio, kImplemented,
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kHighFrequency);
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dword_result_t XMASetInputBuffer0Valid_entry(lpvoid_t context_ptr) {
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XMA_CONTEXT_DATA context(context_ptr);
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context.input_buffer_0_valid = 1;
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context.Store(context_ptr);
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return 0;
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}
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DECLARE_XBOXKRNL_EXPORT2(XMASetInputBuffer0Valid, kAudio, kImplemented,
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kHighFrequency);
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dword_result_t XMASetInputBuffer1_entry(lpvoid_t context_ptr, lpvoid_t buffer,
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dword_t packet_count) {
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uint32_t buffer_physical_address =
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kernel_memory()->GetPhysicalAddress(buffer.guest_address());
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assert_true(buffer_physical_address != UINT32_MAX);
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if (buffer_physical_address == UINT32_MAX) {
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// Xenia-specific safety check.
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XELOGE("XMASetInputBuffer1: Invalid buffer virtual address {:08X}",
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buffer.guest_address());
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return X_E_FALSE;
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}
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XMA_CONTEXT_DATA context(context_ptr);
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context.input_buffer_1_ptr = buffer_physical_address;
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context.input_buffer_1_packet_count = packet_count;
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context.Store(context_ptr);
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return 0;
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}
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DECLARE_XBOXKRNL_EXPORT2(XMASetInputBuffer1, kAudio, kImplemented,
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kHighFrequency);
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dword_result_t XMAIsInputBuffer1Valid_entry(lpvoid_t context_ptr) {
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XMA_CONTEXT_DATA context(context_ptr);
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return context.input_buffer_1_valid;
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}
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DECLARE_XBOXKRNL_EXPORT2(XMAIsInputBuffer1Valid, kAudio, kImplemented,
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kHighFrequency);
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dword_result_t XMASetInputBuffer1Valid_entry(lpvoid_t context_ptr) {
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XMA_CONTEXT_DATA context(context_ptr);
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context.input_buffer_1_valid = 1;
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context.Store(context_ptr);
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return 0;
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}
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DECLARE_XBOXKRNL_EXPORT2(XMASetInputBuffer1Valid, kAudio, kImplemented,
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kHighFrequency);
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dword_result_t XMAIsOutputBufferValid_entry(lpvoid_t context_ptr) {
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XMA_CONTEXT_DATA context(context_ptr);
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return context.output_buffer_valid;
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}
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DECLARE_XBOXKRNL_EXPORT2(XMAIsOutputBufferValid, kAudio, kImplemented,
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kHighFrequency);
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dword_result_t XMASetOutputBufferValid_entry(lpvoid_t context_ptr) {
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XMA_CONTEXT_DATA context(context_ptr);
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context.output_buffer_valid = 1;
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context.Store(context_ptr);
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return 0;
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}
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DECLARE_XBOXKRNL_EXPORT2(XMASetOutputBufferValid, kAudio, kImplemented,
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kHighFrequency);
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dword_result_t XMAGetOutputBufferReadOffset_entry(lpvoid_t context_ptr) {
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XMA_CONTEXT_DATA context(context_ptr);
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return context.output_buffer_read_offset;
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}
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DECLARE_XBOXKRNL_EXPORT2(XMAGetOutputBufferReadOffset, kAudio, kImplemented,
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kHighFrequency);
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dword_result_t XMASetOutputBufferReadOffset_entry(lpvoid_t context_ptr,
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dword_t value) {
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XMA_CONTEXT_DATA context(context_ptr);
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context.output_buffer_read_offset = value;
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context.Store(context_ptr);
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return 0;
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}
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DECLARE_XBOXKRNL_EXPORT2(XMASetOutputBufferReadOffset, kAudio, kImplemented,
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kHighFrequency);
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dword_result_t XMAGetOutputBufferWriteOffset_entry(lpvoid_t context_ptr) {
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XMA_CONTEXT_DATA context(context_ptr);
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return context.output_buffer_write_offset;
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}
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DECLARE_XBOXKRNL_EXPORT2(XMAGetOutputBufferWriteOffset, kAudio, kImplemented,
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kHighFrequency);
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dword_result_t XMAGetPacketMetadata_entry(lpvoid_t context_ptr) {
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XMA_CONTEXT_DATA context(context_ptr);
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return context.packet_metadata;
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}
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DECLARE_XBOXKRNL_EXPORT1(XMAGetPacketMetadata, kAudio, kImplemented);
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dword_result_t XMAEnableContext_entry(lpvoid_t context_ptr) {
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StoreXmaContextIndexedRegister(kernel_state(), 0x1940, context_ptr);
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return 0;
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}
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DECLARE_XBOXKRNL_EXPORT2(XMAEnableContext, kAudio, kImplemented,
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kHighFrequency);
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dword_result_t XMADisableContext_entry(lpvoid_t context_ptr, dword_t wait) {
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X_HRESULT result = X_E_SUCCESS;
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StoreXmaContextIndexedRegister(kernel_state(), 0x1A40, context_ptr);
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if (!kernel_state()
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->emulator()
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->audio_system()
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->xma_decoder()
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->BlockOnContext(context_ptr, !wait)) {
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result = X_E_FALSE;
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}
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return result;
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}
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DECLARE_XBOXKRNL_EXPORT2(XMADisableContext, kAudio, kImplemented,
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kHighFrequency);
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dword_result_t XMABlockWhileInUse_entry(lpvoid_t context_ptr) {
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do {
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XMA_CONTEXT_DATA context(context_ptr);
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if (!context.input_buffer_0_valid && !context.input_buffer_1_valid) {
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break;
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}
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if (!context.work_buffer_ptr) {
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break;
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}
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xe::threading::Sleep(std::chrono::milliseconds(1));
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} while (true);
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return 0;
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}
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DECLARE_XBOXKRNL_EXPORT2(XMABlockWhileInUse, kAudio, kImplemented,
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kHighFrequency);
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} // namespace xboxkrnl
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} // namespace kernel
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} // namespace xe
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DECLARE_XBOXKRNL_EMPTY_REGISTER_EXPORTS(AudioXma);
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