hwopus: Implement DecodeInterleaved
This functions almost identically to DecodeInterleavedWithPerfOld, however this function also has the ability to reset the decoder context. This is documented as a potentially desirable thing in the libopus manual in some circumstances as it says for the OPUS_RESET_STATE ctl: "This should be called when switching streams in order to prevent the back to back decoding from giving different result from one at a time decoding."
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@ -37,7 +37,7 @@ public:
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{3, nullptr, "SetContextForMultiStream"},
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{4, &IHardwareOpusDecoderManager::DecodeInterleavedWithPerfOld, "DecodeInterleavedWithPerfOld"},
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{5, nullptr, "DecodeInterleavedForMultiStreamWithPerfOld"},
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{6, nullptr, "DecodeInterleaved"},
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{6, &IHardwareOpusDecoderManager::DecodeInterleaved, "DecodeInterleaved"},
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{7, nullptr, "DecodeInterleavedForMultiStream"},
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};
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// clang-format on
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@ -46,24 +46,49 @@ public:
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}
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private:
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/// Describes extra behavior that may be asked of the decoding context.
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enum class ExtraBehavior {
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/// No extra behavior.
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None,
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/// Resets the decoder context back to a freshly initialized state.
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ResetContext,
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};
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void DecodeInterleavedOld(Kernel::HLERequestContext& ctx) {
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LOG_DEBUG(Audio, "called");
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DecodeInterleavedHelper(ctx, nullptr);
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DecodeInterleavedHelper(ctx, nullptr, ExtraBehavior::None);
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}
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void DecodeInterleavedWithPerfOld(Kernel::HLERequestContext& ctx) {
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LOG_DEBUG(Audio, "called");
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u64 performance = 0;
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DecodeInterleavedHelper(ctx, &performance);
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DecodeInterleavedHelper(ctx, &performance, ExtraBehavior::None);
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}
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void DecodeInterleavedHelper(Kernel::HLERequestContext& ctx, u64* performance) {
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void DecodeInterleaved(Kernel::HLERequestContext& ctx) {
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LOG_DEBUG(Audio, "called");
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IPC::RequestParser rp{ctx};
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const auto extra_behavior =
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rp.Pop<bool>() ? ExtraBehavior::ResetContext : ExtraBehavior::None;
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u64 performance = 0;
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DecodeInterleavedHelper(ctx, &performance, extra_behavior);
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}
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void DecodeInterleavedHelper(Kernel::HLERequestContext& ctx, u64* performance,
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ExtraBehavior extra_behavior) {
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u32 consumed = 0;
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u32 sample_count = 0;
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std::vector<opus_int16> samples(ctx.GetWriteBufferSize() / sizeof(opus_int16));
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if (extra_behavior == ExtraBehavior::ResetContext) {
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ResetDecoderContext();
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}
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if (!Decoder_DecodeInterleaved(consumed, sample_count, ctx.ReadBuffer(), samples,
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performance)) {
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LOG_ERROR(Audio, "Failed to decode opus data");
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@ -136,6 +161,12 @@ private:
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return true;
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}
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void ResetDecoderContext() {
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ASSERT(decoder != nullptr);
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opus_decoder_ctl(decoder.get(), OPUS_RESET_STATE);
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}
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struct OpusHeader {
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u32_be sz; // Needs to be BE for some odd reason
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INSERT_PADDING_WORDS(1);
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