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// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "audio_core/adsp/apps/opus/opus_decoder.h"
#include "audio_core/opus/decoder_manager.h"
#include "common/alignment.h"
#include "core/core.h"
namespace AudioCore::OpusDecoder {
using namespace Service::Audio;
namespace {
bool IsValidChannelCount(u32 channel_count) {
return channel_count == 1 || channel_count == 2;
}
bool IsValidMultiStreamChannelCount(u32 channel_count) {
return channel_count > 0 && channel_count <= OpusStreamCountMax;
}
bool IsValidSampleRate(u32 sample_rate) {
return sample_rate == 8'000 || sample_rate == 12'000 || sample_rate == 16'000 ||
sample_rate == 24'000 || sample_rate == 48'000;
}
bool IsValidStreamCount(u32 channel_count, u32 total_stream_count, u32 stereo_stream_count) {
return total_stream_count > 0 && static_cast<s32>(stereo_stream_count) >= 0 &&
stereo_stream_count <= total_stream_count &&
total_stream_count + stereo_stream_count <= channel_count;
}
} // namespace
OpusDecoderManager::OpusDecoderManager(Core::System& system_)
: system{system_}, hardware_opus{system} {
for (u32 i = 0; i < MaxChannels; i++) {
required_workbuffer_sizes[i] = hardware_opus.GetWorkBufferSize(1 + i);
}
}
Result OpusDecoderManager::GetWorkBufferSize(OpusParameters& params, u64& out_size) {
OpusParametersEx ex{
.sample_rate = params.sample_rate,
.channel_count = params.channel_count,
.use_large_frame_size = false,
};
R_RETURN(GetWorkBufferSizeExEx(ex, out_size));
}
Result OpusDecoderManager::GetWorkBufferSizeEx(OpusParametersEx& params, u64& out_size) {
R_RETURN(GetWorkBufferSizeExEx(params, out_size));
}
Result OpusDecoderManager::GetWorkBufferSizeExEx(OpusParametersEx& params, u64& out_size) {
R_UNLESS(IsValidChannelCount(params.channel_count), ResultInvalidOpusChannelCount);
R_UNLESS(IsValidSampleRate(params.sample_rate), ResultInvalidOpusSampleRate);
auto work_buffer_size{required_workbuffer_sizes[params.channel_count - 1]};
auto frame_size{params.use_large_frame_size ? 5760 : 1920};
work_buffer_size +=
Common::AlignUp((frame_size * params.channel_count) / (48'000 / params.sample_rate), 64);
out_size = work_buffer_size + 0x600;
R_SUCCEED();
}
Result OpusDecoderManager::GetWorkBufferSizeForMultiStream(OpusMultiStreamParameters& params,
u64& out_size) {
OpusMultiStreamParametersEx ex{
.sample_rate = params.sample_rate,
.channel_count = params.channel_count,
.total_stream_count = params.total_stream_count,
.stereo_stream_count = params.stereo_stream_count,
.use_large_frame_size = false,
.mappings = {},
};
R_RETURN(GetWorkBufferSizeForMultiStreamExEx(ex, out_size));
}
Result OpusDecoderManager::GetWorkBufferSizeForMultiStreamEx(OpusMultiStreamParametersEx& params,
u64& out_size) {
R_RETURN(GetWorkBufferSizeForMultiStreamExEx(params, out_size));
}
Result OpusDecoderManager::GetWorkBufferSizeForMultiStreamExEx(OpusMultiStreamParametersEx& params,
u64& out_size) {
R_UNLESS(IsValidMultiStreamChannelCount(params.channel_count), ResultInvalidOpusChannelCount);
R_UNLESS(IsValidSampleRate(params.sample_rate), ResultInvalidOpusSampleRate);
R_UNLESS(IsValidStreamCount(params.channel_count, params.total_stream_count,
params.stereo_stream_count),
ResultInvalidOpusSampleRate);
auto work_buffer_size{hardware_opus.GetWorkBufferSizeForMultiStream(
params.total_stream_count, params.stereo_stream_count)};
auto frame_size{params.use_large_frame_size ? 5760 : 1920};
work_buffer_size += Common::AlignUp(1500 * params.total_stream_count, 64);
work_buffer_size +=
Common::AlignUp((frame_size * params.channel_count) / (48'000 / params.sample_rate), 64);
out_size = work_buffer_size;
R_SUCCEED();
}
} // namespace AudioCore::OpusDecoder
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