Initial community commit

Src/aacdec-mft/MKVAACDecoder.cpp

@@ -0,0 +1,116 @@
+#include "MKVAACDecoder.h"
+#include <math.h>
+#include "../nsutil/pcm.h"
+
+MKVAACDecoder::MKVAACDecoder(unsigned int bps, bool floating_point)
+:  bps(bps), floating_point(floating_point)
+{
+	
+}
+
+MKVAACDecoder *MKVAACDecoder::Create(const nsmkv::TrackEntryData *track_entry_data, const nsmkv::AudioData *audio_data, unsigned int preferred_bits, unsigned int max_channels, bool floating_point)
+{
+	if (!floating_point)
+	{
+		if (preferred_bits >= 24) 
+			preferred_bits=24;
+		else
+			preferred_bits=16;
+	}
+	/*if (!max_channels)
+		max_channels = 8;*/
+
+	if (track_entry_data->codec_private && track_entry_data->codec_private_len)
+	{
+		MKVAACDecoder *decoder = new MKVAACDecoder(preferred_bits, floating_point);
+		if (decoder && SUCCEEDED(decoder->decoder.Open(track_entry_data->codec_private, track_entry_data->codec_private_len))) {
+			return decoder;
+		}
+		delete decoder;
+	}
+
+	return 0;
+}
+
+int MKVAACDecoder::GetOutputProperties(unsigned int *sampleRate, unsigned int *channels, unsigned int *bitsPerSample, bool *isFloat)
+{
+	uint32_t local_sample_rate, local_channels;
+	HRESULT hr = decoder.GetOutputProperties(&local_sample_rate, &local_channels);
+	if (FAILED(hr)) {
+		return MKV_FAILURE;
+	}
+
+	*sampleRate = local_sample_rate;
+	*channels = local_channels;
+
+	*bitsPerSample = bps;
+	*isFloat = floating_point;
+	return MKV_SUCCESS;
+}
+
+void MKVAACDecoder::Flush()
+{
+	decoder.Flush();
+}
+
+int MKVAACDecoder::OutputFrameSize(size_t *frame_size)
+{
+	size_t local_frame_size;
+	if (FAILED(decoder.OutputBlockSizeSamples(&local_frame_size))) {
+		return MKV_FAILURE;
+	}
+	*frame_size = local_frame_size;
+
+	return MKV_SUCCESS;	
+}
+
+void MKVAACDecoder::Close()
+{
+	delete this;
+}
+
+int MKVAACDecoder::DecodeBlock(void *inputBuffer, size_t inputBufferBytes, void *outputBuffer, size_t *outputBufferBytes)
+{
+	decoder.Feed(inputBuffer, inputBufferBytes);
+	decoder.Decode(outputBuffer, outputBufferBytes, bps, false, 1.0);
+	return MKV_SUCCESS;
+}
+
+void MKVAACDecoder::EndOfStream()
+{
+	decoder.Feed(0, 0);
+}
+
+#define CBCLASS MKVAACDecoder
+START_DISPATCH;
+CB(OUTPUT_FRAME_SIZE, OutputFrameSize)
+CB(GET_OUTPUT_PROPERTIES, GetOutputProperties)
+CB(DECODE_BLOCK, DecodeBlock)
+VCB(FLUSH, Flush)
+VCB(CLOSE, Close)
+VCB(END_OF_STREAM, EndOfStream)
+END_DISPATCH;
+#undef CBCLASS
+
+
+int MKVDecoder::CreateAudioDecoder(const char *codec_id, const nsmkv::TrackEntryData *track_entry_data, const nsmkv::AudioData *audio_data, unsigned int preferred_bits, unsigned int max_channels,bool floating_point, ifc_mkvaudiodecoder **decoder)
+{
+	if (!strcmp(codec_id, "A_AAC"))
+	{
+		MKVAACDecoder *aac_decoder = MKVAACDecoder::Create(track_entry_data, audio_data, preferred_bits, max_channels, floating_point);
+		if (aac_decoder)
+		{
+			*decoder = aac_decoder;
+			return CREATEDECODER_SUCCESS;
+		}
+		return CREATEDECODER_FAILURE;
+	}
+
+	return CREATEDECODER_NOT_MINE;
+}
+
+#define CBCLASS MKVDecoder
+START_DISPATCH;
+CB(CREATE_AUDIO_DECODER, CreateAudioDecoder)
+END_DISPATCH;
+#undef CBCLASS