Initial community commit

Src/Plugins/Input/in_mp3/AACFrame.cpp

@@ -0,0 +1,94 @@
+#include "AACFrame.h"
+#include "api__in_mp3.h"
+#include "resource.h"
+#include "in2.h"
+extern In_Module mod;
+
+void AACFrame::ReadBuffer( unsigned __int8 *buffer )
+{
+	syncword             = ( buffer[ 0 ] << 4 ) | ( buffer[ 1 ] >> 4 );
+	id                   = ( buffer[ 1 ] >> 3 ) & 1;
+	layer                = ( buffer[ 1 ] >> 1 ) & 3;
+	protection           = ( buffer[ 1 ] ) & 1;
+	profile              = ( buffer[ 2 ] >> 6 ) & 3;
+	sampleRateIndex      = ( buffer[ 2 ] >> 2 ) & 0xF;
+	privateBit           = ( buffer[ 2 ] >> 1 ) & 1;
+	channelConfiguration = ( ( buffer[ 2 ] & 1 ) << 2 ) | ( ( buffer[ 3 ] >> 6 ) & 3 );
+	original             = ( buffer[ 3 ] >> 5 ) & 1;
+	home                 = ( buffer[ 3 ] >> 4 ) & 1;
+
+	//copyright_identification_bit = (buffer[3] >> 3) & 1;
+	//copyright_identification_start = (buffer[3] >> 2) & 1;
+	frameLength          = ( ( buffer[ 3 ] & 3 ) << 11 ) | ( buffer[ 4 ] << 3 ) | ( ( buffer[ 5 ] >> 5 ) & 7 );
+	bufferFullness       = ( ( buffer[ 5 ] & 0xF8 ) << 5 ) | ( ( buffer[ 6 ] >> 2 ) & 0x3F );
+	numDataBlocks        = buffer[ 6 ] & 3;
+}
+
+bool AACFrame::OK()
+{
+	if (syncword == SYNC
+		&& layer == 0
+		&& sampleRateIndex < 13
+		//&& profile != LTP // TODO: can coding technologies decoder do LTP?
+		)
+		return true;
+	else
+		return false;
+}
+
+
+static const unsigned int aac_sratetab[] =
+    {
+        96000,
+        88200,
+        64000,
+        48000,
+        44100,
+        32000,
+        24000,
+        22050,
+        16000,
+        12000,
+        11025,
+        8000,
+				7350,
+    };
+
+int AACFrame::GetSampleRate()
+{
+	return aac_sratetab[sampleRateIndex];
+}
+
+static const wchar_t *aac_profiletab[] = {L"Main", L"LC", L"SSR", L"LTP"};
+
+const wchar_t *AACFrame::GetProfileName()
+{
+	return aac_profiletab[profile];
+}
+
+//static const char *aac_channels[] = {"Custom", "Mono", "Stereo", "3 channel", "4 channel", "surround", "5.1", "7.1"};
+static wchar_t aac_channels_str[64];
+static int aac_channels_id[] = {IDS_CUSTOM, IDS_MONO, IDS_STEREO, IDS_3_CHANNEL, IDS_4_CHANNEL, IDS_SURROUND, IDS_5_1, IDS_7_1};
+const wchar_t *AACFrame::GetChannelConfigurationName()
+{
+	return WASABI_API_LNGSTRINGW_BUF(aac_channels_id[channelConfiguration],aac_channels_str,64);
+}
+
+int AACFrame::GetNumChannels()
+{
+	switch(channelConfiguration)
+	{
+	case 7:
+		return 8;
+	default:
+		return channelConfiguration;
+	}
+}
+
+int AACFrame::GetMPEGVersion()
+{
+	if (id == 0)
+		return 2;
+	else
+		return 4;
+}