1 files changed, 128 insertions, 0 deletions
diff --git a/Src/Plugins/Encoder/enc_fhgaac/FhGAACEncoder.cpp b/Src/Plugins/Encoder/enc_fhgaac/FhGAACEncoder.cpp
new file mode 100644
index 00000000..6d2b31b3
--- /dev/null
+++ b/Src/Plugins/Encoder/enc_fhgaac/FhGAACEncoder.cpp
@@ -0,0 +1,128 @@
+#include "FhGAACEncoder.h"
+#include "mp4FastAAClib.h"
+#include <malloc.h>
+#include "config.h"
+#include "../nsutil/pcm.h"
+
+FhGAACEncoder *FhGAACEncoder::CreateDecoder(const AACConfiguration *cfg, int nch, int srate, int bps)
+{
+	MPEG4ENC_ERROR err;
+
+	MPEG4ENC_SETUP setup;
+	setup.aot =	AACConfig_GetAOT(cfg);
+	setup.nBitRate = AACConfig_GetBitrate(cfg, nch); 
+	setup.bitrateMode = AACConfig_GetBitrateMode(cfg);
+	setup.quality = MP4_QUAL_HIGH;
+	setup.chMode = AACConfig_GetChannelMode(cfg, nch);
+	setup.sbrSignaling = MP4_SBRSIG_EXPL_BC;
+	setup.nSampleRateIn = srate;
+	setup.transportFormat = MP4_TT_RAW;
+	setup.nGranuleLength = MP4_GRANULE_1024;
+	setup.metadataMode = MP4_METADATA_NONE;
+
+	HANDLE_MPEG4ENC_ENCODER encoder=0;
+	err = MPEG4ENC_Configure(&encoder, &setup);
+	if (err != MPEG4ENC_NO_ERROR)
+	{
+		return 0;
+	}
+
+	unsigned int first_samples;
+	err = MPEG4ENC_Open(&encoder, &first_samples);
+	if (err != MPEG4ENC_NO_ERROR)
+	{
+		
+		MPEG4ENC_Close(&encoder);
+		return 0;
+	}
+		float *sample_buffer = (float *)malloc(first_samples * sizeof(float));
+	if (!sample_buffer)
+	{
+		MPEG4ENC_Close(&encoder);
+		return 0;
+	}
+
+	FhGAACEncoder *fhg_enc = new FhGAACEncoder(encoder, &setup, nch, srate, bps, sample_buffer, first_samples);
+	if (!fhg_enc)
+	{
+		free(sample_buffer);
+		MPEG4ENC_Close(&encoder);
+	}
+
+	AACConfig_GetToolString(&setup, fhg_enc->tool, sizeof(fhg_enc->tool));
+	return fhg_enc;
+}
+
+FhGAACEncoder::FhGAACEncoder(HANDLE_MPEG4ENC_ENCODER encoder, const MPEG4ENC_SETUP *setup, int nch, int srate, int bps, float *sample_buffer, unsigned int next_samples)
+: encoder(encoder), channels(nch), sample_rate(srate), bits_per_sample(bps), sample_buffer(sample_buffer), next_samples(next_samples)
+{
+	MPEG4ENC_INFO info;
+	MPEG4ENC_GetInfo(encoder, &info);
+	samples_per_frame = info.nSamplesFrame[0];
+
+	if (info.nSamplingRate[0] != srate)
+		resampling = true;
+	else
+		resampling = false;
+	finishing=false;
+	total_samples=0;
+	decodable_samples=0;
+	// TODO: move this somewhere where we can error-check
+	mp4_writer.AddAudioTrack(encoder, setup);
+}
+
+FhGAACEncoder::~FhGAACEncoder()
+{
+	free(sample_buffer);
+	MPEG4ENC_Close(&encoder);
+}
+
+int FhGAACEncoder::Encode(int framepos, void *in, int in_avail, int *in_used, void *out, int out_avail)
+{
+	if (!in_avail && !finishing)
+		return 0;
+
+	size_t num_samples = in_avail / (bits_per_sample/8);
+	num_samples = min(num_samples, next_samples);
+
+	nsutil_pcm_IntToFloat_Interleaved(sample_buffer, in, bits_per_sample, num_samples);
+
+	int samples_consumed=0;
+	int out_used = 0;
+	MPEG4ENC_AUINFO *info;
+	MPEG4ENC_ERROR err = MPEG4ENC_Encode(encoder, sample_buffer, num_samples, &samples_consumed, &next_samples,	(unsigned char * const)out, out_avail, &out_used,	&info);
+	if (err == MPEG4ENC_NO_ERROR && out_used)
+	{
+		decodable_samples += samples_per_frame;
+		mp4_writer.Write(out, out_used, samples_per_frame);
+	}
+	else if (err != MPEG4ENC_NO_ERROR)
+	{
+		return 0;
+	}
+	
+	if (!finishing)
+	{
+		*in_used = samples_consumed * (bits_per_sample/8);
+		total_samples += samples_consumed / channels;
+	}
+
+	return out_used;
+}
+
+void FhGAACEncoder::PrepareToFinish()
+{
+	finishing=true;
+}
+
+void FhGAACEncoder::Finish(const wchar_t *filename)
+{
+	MPEG4ENC_INFO info;
+	MPEG4ENC_GetInfo(encoder, &info);
+	if (!resampling)
+		mp4_writer.WriteGaps(info.nDelay, decodable_samples-total_samples-info.nDelay, total_samples);
+
+	mp4_writer.WriteTool(tool);
+
+	mp4_writer.CloseTo(filename);
+}