Initial community commit

Src/Plugins/Input/in_wmvdrm/AudioFormat.cpp

@@ -0,0 +1,61 @@
+#include "main.h"
+#include "AudioLayer.h"
+
+unsigned long AudioFormat::AudioSamplesToMilliseconds(unsigned long samples)
+{
+	return MulDiv(samples, 1000, SampleRate());
+}
+
+unsigned long AudioFormat::AudioBytesToMilliseconds(unsigned long bytes)
+{
+	return MulDiv(AudioBytesToSamples(bytes), 1000, SampleRate());
+}
+
+unsigned long AudioFormat::AudioMillisecondsToBytes(DWORD milliseconds)
+{
+	return AudioSamplesToBytes(MulDiv(milliseconds, SampleRate(), 1000));
+}
+
+unsigned long AudioFormat::AudioDurationToBytes(QWORD duration)
+{
+	// TODO: potential integer overflow
+	return AudioSamplesToBytes(MulDiv((int)duration, SampleRate(), 1000*10000));
+}
+
+unsigned long AudioFormat::AudioBytesToSamples(unsigned long bytes)
+{
+	return bytes / waveFormat->Format.nBlockAlign;
+}
+
+unsigned long AudioFormat::AudioSamplesToBytes(unsigned long samples)
+{
+	return samples * waveFormat->Format.nBlockAlign;
+}
+
+long AudioFormat::Channels()
+{
+	return waveFormat->Format.nChannels;
+}
+
+long AudioFormat::ValidBits()
+{
+	if (waveFormat->Format.wFormatTag == WAVE_FORMAT_PCM)
+	{
+		return waveFormat->Format.wBitsPerSample;
+	}
+	if (waveFormat->Format.wFormatTag == WAVE_FORMAT_EXTENSIBLE)
+	{
+		return waveFormat->Samples.wValidBitsPerSample;
+	}
+	return 0;
+}
+
+long AudioFormat::BitSize()
+{
+	return waveFormat->Format.wBitsPerSample;
+}
+
+long AudioFormat::SampleRate()
+{
+	return waveFormat->Format.nSamplesPerSec;
+}