audio record

Author: manoreken2

DumpAVIHeaders/Program.cs

@@ -186,9 +186,18 @@ static void ReadAviStreamHeader(string spc, BinaryReader br) {
             mAviSH.right = br.ReadInt16();
             mAviSH.bottom = br.ReadInt16();
 
-            Console.WriteLine("{0:x12} {1} AviStreamHeader {2} {3}",
+            Console.WriteLine("{0:x12} {1} AviStreamHeader {2}bytes {3} {4}"
+                + " dwFlags={5:x8} wPriority={6} wLanguage={7} dwInitialFrames={8} dwScale={9}"
+                + " dwRate={10} dwStart={11} dwLength={12} dwSuggestedBufferSize={13}"
+                + " dwQuality={14} dwSampleSize={15}",
                 br.BaseStream.Position-64, spc,
-                FourCCToString(mAviSH.fccType), FourCCToString(mAviSH.fccHandler));
+                cb,
+                FourCCToString(mAviSH.fccType), FourCCToString(mAviSH.fccHandler),
+                
+                mAviSH.dwFlags, mAviSH.wPriority, mAviSH.wLanguage,
+                mAviSH.dwInitialFrames, mAviSH.dwScale, mAviSH.dwRate, mAviSH.dwStart,
+                mAviSH.dwLength, mAviSH.dwSuggestedBufferSize, mAviSH.dwQuality,
+                mAviSH.dwSampleSize);
         }
 
         static void ReadBitmapInfoHeader(string spc, BinaryReader br) {
@@ -230,10 +239,12 @@ static void ReadWaveFormatEx(string spc, BinaryReader br) {
             mWavFmt.wBitsPerSample = br.ReadUInt16();
             mWavFmt.cbSize = br.ReadUInt16();
 
-            Console.WriteLine("{0:x12} {1} WaveFormatEx {2}Hz {3}bit {4}ch",
+            Console.WriteLine("{0:x12} {1} WaveFormatEx {2}bytes {3}Hz {4}bit {5}ch cbSize={6}",
                 br.BaseStream.Position-22, spc,
+                cb,
                 mWavFmt.nSamplesPerSec,
-                mWavFmt.wBitsPerSample, mWavFmt.nChannels);
+                mWavFmt.wBitsPerSample, mWavFmt.nChannels,
+                mWavFmt.cbSize);
 
             br.BaseStream.Seek(cb - 18, SeekOrigin.Current);
         }

MLDX12VideoCapture/MLAVICommon.h

@@ -21,6 +21,7 @@ enum MLFOURCC {
     MLFOURCC_movi = 0x69766f6d,
     MLFOURCC_00db = 0x62643030,
     MLFOURCC_00dc = 0x63643030,
+    MLFOURCC_01wb = 0x62773130,
 };
 
 struct MLAviMainHeader {
@@ -85,6 +86,20 @@ struct MLBitmapInfoHeader {
     uint32_t biClrImportant;
 };
 
+// 18bytes
+struct MLWaveFormatExtensible {
+        uint16_t  wFormatTag;
+        short  nChannels;
+        uint32_t nSamplesPerSec;
+        uint32_t nAvgBytesPerSec;
+        short  nBlockAlign;
+        short  wBitsPerSample;
+        short  cbSize;
+        short  wValidBitsPerSample;
+        uint32_t dwChannelMask;
+        uint32_t subFormatGuid[4];
+};
+
 struct MLRiffHeader {
     uint32_t riff;
     uint32_t bytes;
@@ -105,3 +120,4 @@ struct MLStreamDataHeader {
 uint32_t MLStringToFourCC(const char *s);
 
 const std::string MLFourCCtoString(uint32_t fourcc);
+

MLDX12VideoCapture/MLAviReader.cpp

@@ -15,28 +15,6 @@ MLAviReader::~MLAviReader(void)
     Close();
 }
 
-MLVideoTime
-MLAviReader::FrameNrToTime(const int frameNr)
-{
-    MLVideoTime r;
-    memset(&r, 0, sizeof r);
-
-    if (FramesPerSec() == 0) {
-        return r;
-    }
-
-    r.frame = frameNr % FramesPerSec();
-    const int totalSec = frameNr / FramesPerSec();
-
-    r.hour = totalSec / 3600;
-    int remain = totalSec - r.hour * 3600;
-    r.min = remain / 60;
-    remain -= r.min * 60;
-    r.sec = remain;
-
-    return r;
-}
-
 float
 MLAviReader::DurationSec(void) const
 {

MLDX12VideoCapture/MLAviReader.h

@@ -22,8 +22,6 @@ class MLAviReader {
 
     float DurationSec(void) const;
 
-    MLVideoTime FrameNrToTime(const int frameNr);
-
     /// @return > 0 : copied bytes, negative value: error.
     int GetImage(const int frameNr,
             const uint32_t buffBytes, uint8_t *buff);