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hwopus: Implement DecodeInterleaved

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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."
This commit is contained in:
Lioncash 2019-01-29 18:21:17 -05:00
parent 07b86dc28c
commit a897feb21e
1 changed files with 35 additions and 4 deletions
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39
src/core/hle/service/audio/hwopus.cpp
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@ -37,7 +37,7 @@ public:
{3, nullptr, "SetContextForMultiStream"},
{4, &IHardwareOpusDecoderManager::DecodeInterleavedWithPerfOld, "DecodeInterleavedWithPerfOld"},
{5, nullptr, "DecodeInterleavedForMultiStreamWithPerfOld"},
{6, nullptr, "DecodeInterleaved"},
{6, &IHardwareOpusDecoderManager::DecodeInterleaved, "DecodeInterleaved"},
{7, nullptr, "DecodeInterleavedForMultiStream"},
};
// clang-format on
@ -46,24 +46,49 @@ public:
}
private:
/// Describes extra behavior that may be asked of the decoding context.
enum class ExtraBehavior {
/// No extra behavior.
None,
/// Resets the decoder context back to a freshly initialized state.
ResetContext,
};
void DecodeInterleavedOld(Kernel::HLERequestContext& ctx) {
LOG_DEBUG(Audio, "called");
DecodeInterleavedHelper(ctx, nullptr);
DecodeInterleavedHelper(ctx, nullptr, ExtraBehavior::None);
}
void DecodeInterleavedWithPerfOld(Kernel::HLERequestContext& ctx) {
LOG_DEBUG(Audio, "called");
u64 performance = 0;
DecodeInterleavedHelper(ctx, &performance);
DecodeInterleavedHelper(ctx, &performance, ExtraBehavior::None);
}
void DecodeInterleavedHelper(Kernel::HLERequestContext& ctx, u64* performance) {
void DecodeInterleaved(Kernel::HLERequestContext& ctx) {
LOG_DEBUG(Audio, "called");
IPC::RequestParser rp{ctx};
const auto extra_behavior =
rp.Pop<bool>() ? ExtraBehavior::ResetContext : ExtraBehavior::None;
u64 performance = 0;
DecodeInterleavedHelper(ctx, &performance, extra_behavior);
}
void DecodeInterleavedHelper(Kernel::HLERequestContext& ctx, u64* performance,
ExtraBehavior extra_behavior) {
u32 consumed = 0;
u32 sample_count = 0;
std::vector<opus_int16> samples(ctx.GetWriteBufferSize() / sizeof(opus_int16));
if (extra_behavior == ExtraBehavior::ResetContext) {
ResetDecoderContext();
}
if (!Decoder_DecodeInterleaved(consumed, sample_count, ctx.ReadBuffer(), samples,
performance)) {
LOG_ERROR(Audio, "Failed to decode opus data");
@ -136,6 +161,12 @@ private:
return true;
}
void ResetDecoderContext() {
ASSERT(decoder != nullptr);
opus_decoder_ctl(decoder.get(), OPUS_RESET_STATE);
}
struct OpusHeader {
u32_be sz; // Needs to be BE for some odd reason
INSERT_PADDING_WORDS(1);