changes aea header:

- write length in header (qhimdtransfer writes it, and we will)
- make first frame empty (it is a hack, but without it ffmpeg based
  players detects aea file as mpeg. I need aea specification ;-))

3 files changed, 20 insertions, 7 deletions

diff --git a/src/aea.cpp b/src/aea.cpp
index fc041cb..f5c2514 100644
--- a/src/aea.cpp
+++ b/src/aea.cpp
@@ -24,7 +24,7 @@ TAea::TMeta TAea::ReadMeta(const string& filename) {
 
 }
 
-TAea::TMeta TAea::CreateMeta(const string& filename, const string& title, int channelNum) {
+TAea::TMeta TAea::CreateMeta(const string& filename, const string& title, int channelNum, uint32_t numFrames) {
     FILE* fp = fopen(filename.c_str(), "w");
     if (!fp)
         throw TAeaIOError("Can't open file to write", errno);
@@ -37,12 +37,20 @@ TAea::TMeta TAea::CreateMeta(const string& filename, const string& title, int ch
     strncpy(&buf[4], title.c_str(), 16);
     buf[19] = 0;
 //    buf[210] = 0x08;
+    *(uint32_t*)&buf[260] = numFrames;
     buf[264] = (char)channelNum;
     if (fwrite(&buf[0], TAea::AeaMetaSize, 1, fp) != 1) {
         const int errnum = errno;
         fclose(fp);
         throw TAeaIOError("Can't read AEA header", errnum);
     }
+    static char dummy[212];
+    if (fwrite(&dummy[0], 212, 1, fp) != 1) {
+        const int errnum = errno;
+        fclose(fp);
+        throw TAeaIOError("Can't read AEA header", errnum);
+    }
+
     return {fp, buf};
 }
 
@@ -51,8 +59,8 @@ TAea::TAea(const string& filename)
     : Meta(ReadMeta(filename)) {
     }
 
-TAea::TAea(const string& filename, const string& title, int channelNum)
-    : Meta(CreateMeta(filename, title, channelNum)) {
+TAea::TAea(const string& filename, const string& title, int channelNum, uint32_t numFrames)
+    : Meta(CreateMeta(filename, title, channelNum, numFrames)) {
     }
 
 TAea::~TAea() {
@@ -82,6 +90,10 @@ void TAea::WriteFrame(std::unique_ptr<TAea::TFrame>&& frame) {
 }
 */
 void TAea::WriteFrame(std::vector<char> data) {
+    if (FirstWrite) {
+        FirstWrite = false;
+        return;
+    }
     data.resize(212);
     if (fwrite(data.data(), data.size(), 1, Meta.AeaFile) != 1) {
         const int errnum = errno;
diff --git a/src/aea.h b/src/aea.h
index 3499579..a5af1b8 100644
--- a/src/aea.h
+++ b/src/aea.h
@@ -30,11 +30,12 @@ class TAea {
         std::array<char, AeaMetaSize> AeaHeader;
     } Meta;
     static TAea::TMeta ReadMeta(const std::string& filename);
-    static TAea::TMeta CreateMeta(const std::string& filename, const std::string& title, int numChannel);
+    static TAea::TMeta CreateMeta(const std::string& filename, const std::string& title, int numChannel, uint32_t numFrames);
+    bool FirstWrite = true;
 public:
         typedef std::array<char, 212> TFrame;
 		TAea(const std::string& filename);
-        TAea(const std::string& filename, const std::string& title, int numChannel);
+        TAea(const std::string& filename, const std::string& title, int numChannel, uint32_t numFrames);
 		~TAea();
         std::unique_ptr<TFrame> ReadFrame(); 
 //        void WriteFrame(std::unique_ptr<TAea::TFrame>&& frame);
diff --git a/src/main.cpp b/src/main.cpp
index 71c8fb2..fc4bced 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -89,9 +89,9 @@ int main(int argc, char* const* argv) {
         wavIO = TWavPtr(new TWav(inFile));
         const TWavHeader& wavHeader = wavIO->GetWavHeader();
         const int numChannels = wavHeader.NumOfChan;
-        aeaIO = TAeaPtr(new TAea(outFile, "test", numChannels));
-        pcmEngine = new TPCMEngine<double>(4096, numChannels, TPCMEngine<double>::TReaderPtr(wavIO->GetPCMReader<double>()));
         totalSamples = wavHeader.ChunkSize;
+        aeaIO = TAeaPtr(new TAea(outFile, "test", numChannels, totalSamples / 2 / 512));
+        pcmEngine = new TPCMEngine<double>(4096, numChannels, TPCMEngine<double>::TReaderPtr(wavIO->GetPCMReader<double>()));
         cout << "Input file: " << inFile << "Channels: " << numChannels << "SampleRate: " << wavHeader.SamplesPerSec << "TotalSamples: " << totalSamples << endl;
     } else if (mode == E_DECODE) {
         aeaIO = TAeaPtr(new TAea(inFile));