1 files changed, 149 insertions, 0 deletions
diff --git a/mpeglib/lib/mpegplay/picture.cpp b/mpeglib/lib/mpegplay/picture.cpp
new file mode 100644
index 00000000..6d8c1efe
--- /dev/null
+++ b/mpeglib/lib/mpegplay/picture.cpp
@@ -0,0 +1,149 @@
+/*
+  mpeg video picture
+  Copyright (C) 2000  Martin Vogt
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Library General Public License as published by
+  the Free Software Foundation.
+
+  For more information look at the file COPYRIGHT in this package
+
+ */
+
+
+#include "picture.h"
+
+
+Picture::Picture() {
+
+  /* Initialize pointers to extension and user data. */
+  extraBit=0;
+  startOfPicStamp=new TimeStamp();
+  extension=new MpegExtension();
+}
+
+
+
+Picture::~Picture() {
+  delete startOfPicStamp;
+  delete extension;
+}
+
+
+/*
+ *--------------------------------------------------------------
+ *
+ * ParsePicture --
+ *
+ *      Parses picture header. Marks picture to be presented
+ *      at particular time given a time stamp.
+ *
+ * Results:
+ *      Values from picture header put into video stream structure.
+ *
+ * Side effects:
+ *      Bit stream irreversibly parsed.
+ *
+ *--------------------------------------------------------------
+ */
+int Picture::processPicture(MpegVideoStream* mpegVideoStream) {
+  TimeStamp* stamp;
+
+  /* Flush header start code. */
+  mpegVideoStream->flushBits(32);
+
+  /* Parse off temporal reference. */
+  temp_ref=mpegVideoStream->getBits(10);
+
+  /* Parse of picture type. */
+  code_type=mpegVideoStream->getBits(3);
+
+
+  // get timestamp from stamp queue
+  stamp=mpegVideoStream->getCurrentTimeStamp();
+
+  stamp->copyTo(startOfPicStamp);
+  // now invalidate the PTSFlag
+  stamp->setPTSFlag(false);
+
+
+  /* Parse off vbv buffer delay value. */
+  vbv_delay=mpegVideoStream->getBits(16);
+
+
+  /* If P or B type frame... */
+
+  if ((code_type == P_TYPE) || (code_type == B_TYPE)) {
+
+    /* Parse off forward vector full pixel flag. sets it to true/false*/
+    full_pel_forw_vector=mpegVideoStream->getBits(1);
+
+
+    /* Parse of forw_r_code. */
+    /* Decode forw_r_code into forw_r_size and forw_f. */
+    forw_r_size=mpegVideoStream->getBits(3);
+    forw_r_size--;
+
+
+    forw_f = (1 << forw_r_size);
+  }
+  /* If B type frame... */
+  
+  if (code_type == B_TYPE) {
+    
+    /* Parse off back vector full pixel flag. */
+    full_pel_back_vector=mpegVideoStream->getBits(1);
+    
+
+    /* Parse off back_r_code. */
+    /* Decode back_r_code into back_r_size and back_f. */
+    back_r_size=mpegVideoStream->getBits(3);
+    back_r_size--;
+
+
+    back_f = (1 << back_r_size);
+  }
+  /* Get extra bit picture info. */
+
+  
+  /*
+  extraBit=mpegVideoStream->getBits(1);
+  if (extraBit) {
+    cout << "extraBit"<<endl;
+    exit(0);
+    extension->processExtBuffer(mpegVideoStream);
+  }
+  */
+  extension->processExtra_bit_info(mpegVideoStream);
+  extension->processExtensionData(mpegVideoStream);
+
+
+ 
+ 
+
+  return true;
+}
+
+int Picture::processPictureCodingExtension(MpegVideoStream* ) {
+  return true;
+}
+
+unsigned int Picture::geth_back_r(MpegVideoStream* mpegVideoStream) {
+  return mpegVideoStream->getBits(back_r_size);
+}
+
+
+unsigned int Picture::getv_back_r(MpegVideoStream* mpegVideoStream) {
+  return mpegVideoStream->getBits(back_r_size);
+}
+ 
+
+unsigned int Picture::geth_forw_r(MpegVideoStream* mpegVideoStream) {
+  return mpegVideoStream->getBits(forw_r_size);
+}
+
+
+unsigned int Picture::getv_forw_r(MpegVideoStream* mpegVideoStream) {
+  return mpegVideoStream->getBits(forw_r_size);
+}
+