1 files changed, 61 insertions, 3 deletions

diff --git a/src/audio_core/common.h b/src/audio_core/common.h
index 7bb145c53..0731d3eb3 100644
--- a/src/audio_core/common.h
+++ b/src/audio_core/common.h
@@ -8,13 +8,29 @@
 #include "common/swap.h"
 #include "core/hle/result.h"
 
-namespace AudioCore {
+namespace AudioCommon {
 namespace Audren {
 constexpr ResultCode ERR_INVALID_PARAMETERS{ErrorModule::Audio, 41};
-}
+constexpr ResultCode ERR_SPLITTER_SORT_FAILED{ErrorModule::Audio, 43};
+} // namespace Audren
 
 constexpr u32_le CURRENT_PROCESS_REVISION = Common::MakeMagic('R', 'E', 'V', '8');
 constexpr std::size_t MAX_MIX_BUFFERS = 24;
+constexpr std::size_t MAX_BIQUAD_FILTERS = 2;
+constexpr std::size_t MAX_CHANNEL_COUNT = 6;
+constexpr std::size_t MAX_WAVE_BUFFERS = 4;
+constexpr std::size_t MAX_SAMPLE_HISTORY = 4;
+constexpr u32 STREAM_SAMPLE_RATE = 48000;
+constexpr u32 STREAM_NUM_CHANNELS = 6;
+constexpr s32 NO_SPLITTER = -1;
+constexpr s32 NO_MIX = 0x7fffffff;
+constexpr s32 NO_FINAL_MIX = std::numeric_limits<s32>::min();
+constexpr s32 FINAL_MIX = 0;
+constexpr std::size_t TEMP_MIX_BASE_SIZE = 0x3f00; // TODO(ogniK): Work out this constant
+// Any size checks seem to take the sample history into account
+// and our const ends up being 0x3f04, the 4 bytes are most
+// likely the sample history
+constexpr std::size_t TOTAL_TEMP_MIX_SIZE = TEMP_MIX_BASE_SIZE + AudioCommon::MAX_SAMPLE_HISTORY;
 
 static constexpr u32 VersionFromRevision(u32_le rev) {
     // "REV7" -> 7
@@ -45,4 +61,46 @@ static constexpr bool CanConsumeBuffer(std::size_t size, std::size_t offset, std
     return true;
 }
 
-} // namespace AudioCore
+struct UpdateDataSizes {
+    u32_le behavior{};
+    u32_le memory_pool{};
+    u32_le voice{};
+    u32_le voice_channel_resource{};
+    u32_le effect{};
+    u32_le mixer{};
+    u32_le sink{};
+    u32_le performance{};
+    u32_le splitter{};
+    u32_le render_info{};
+    INSERT_PADDING_WORDS(4);
+};
+static_assert(sizeof(UpdateDataSizes) == 0x38, "UpdateDataSizes is an invalid size");
+
+struct UpdateDataHeader {
+    u32_le revision{};
+    UpdateDataSizes size{};
+    u32_le total_size{};
+};
+static_assert(sizeof(UpdateDataHeader) == 0x40, "UpdateDataHeader is an invalid size");
+
+struct AudioRendererParameter {
+    u32_le sample_rate;
+    u32_le sample_count;
+    u32_le mix_buffer_count;
+    u32_le submix_count;
+    u32_le voice_count;
+    u32_le sink_count;
+    u32_le effect_count;
+    u32_le performance_frame_count;
+    u8 is_voice_drop_enabled;
+    u8 unknown_21;
+    u8 unknown_22;
+    u8 execution_mode;
+    u32_le splitter_count;
+    u32_le num_splitter_send_channels;
+    u32_le unknown_30;
+    u32_le revision;
+};
+static_assert(sizeof(AudioRendererParameter) == 52, "AudioRendererParameter is an invalid size");
+
+} // namespace AudioCommon