From 90712e97bdc219492235f3ae04f3e707ae10e161 Mon Sep 17 00:00:00 2001
From: deva <deva>
Date: Sun, 1 May 2005 11:25:56 +0000
Subject: Added code to read screenshot from frame queue, decode it to rgb and
 put it into a qimage.

---
 src/camera.cc     |  7 +++++--
 src/camera.h      |  5 ++++-
 src/encoder.cc    | 59 ++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 src/encoder.h     |  7 ++++++-
 src/mainwindow.cc |  8 ++++++--
 5 files changed, 79 insertions(+), 7 deletions(-)

diff --git a/src/camera.cc b/src/camera.cc
index b7dd8f4..6300946 100644
--- a/src/camera.cc
+++ b/src/camera.cc
@@ -27,6 +27,9 @@
  */
 /*
  * $Log$
+ * Revision 1.9  2005/05/01 11:25:56  deva
+ * Added code to read screenshot from frame queue, decode it to rgb and put it into a qimage.
+ *
  * Revision 1.8  2005/05/01 09:56:26  deva
  * Added Id and Log tags to all files
  *
@@ -174,9 +177,9 @@ void Camera::unfreeze()
   else errorstatus->pushError("Camera not initialized.");
 }
 
-void Camera::snapshot()
+void Camera::snapshot(unsigned char *rgb)
 {
-  if(initialized) encoder->shoot();
+  if(initialized) encoder->shoot(rgb);
   else errorstatus->pushError("Camera not initialized.");
 }
 
diff --git a/src/camera.h b/src/camera.h
index 2e0126f..eafaf27 100644
--- a/src/camera.h
+++ b/src/camera.h
@@ -27,6 +27,9 @@
  */
 /*
  * $Log$
+ * Revision 1.9  2005/05/01 11:25:56  deva
+ * Added code to read screenshot from frame queue, decode it to rgb and put it into a qimage.
+ *
  * Revision 1.8  2005/05/01 09:56:26  deva
  * Added Id and Log tags to all files
  *
@@ -77,7 +80,7 @@ public:
   void stop(n_savestate save);
   void freeze();
   void unfreeze();
-  void snapshot();
+  void snapshot(unsigned char *rgb);
 
   // Status methods
   Error *errorObject();
diff --git a/src/encoder.cc b/src/encoder.cc
index 9498cb9..21e418d 100644
--- a/src/encoder.cc
+++ b/src/encoder.cc
@@ -25,6 +25,9 @@
  */
 /*
  * $Log$
+ * Revision 1.18  2005/05/01 11:25:56  deva
+ * Added code to read screenshot from frame queue, decode it to rgb and put it into a qimage.
+ *
  * Revision 1.17  2005/05/01 09:56:26  deva
  * Added Id and Log tags to all files
  *
@@ -36,6 +39,10 @@
 
 #include <time.h>
 
+// Use libdv
+#include <libdv/dv.h>
+#include <libdv/dv_types.h>
+
 Encoder::Encoder(Error* err,
                  const char *gip,
                  const int gport,
@@ -126,7 +133,12 @@ void Encoder::freeze()
 }
 
 
-void Encoder::shoot()
+/*
+ * shoot
+ * Set the shoot bit in the network header on the current frame.
+ * return the decodet (rgba) version af that frame, for thumbnail show.
+ */
+void Encoder::shoot(unsigned char *rgb)
 {
   if(!s) {
     s = new Socket(port, errobj);
@@ -134,6 +146,7 @@ void Encoder::shoot()
     n = new Network(s, errobj);
   }
   if(!errobj->hasError()) shoot_request = 1 - shoot_request;
+  getScreenshot(rgb);
 }
 
 
@@ -181,4 +194,48 @@ void Encoder::stop(n_savestate save) {
   }
 }
 
+
+void Encoder::getScreenshot(unsigned char *rgb)
+{
+  Frame *frame;
+
+  unsigned char *pixels[3];
+  int pitches[3];
+
+  pixels[ 0 ] = rgb;
+  pixels[ 1 ] = NULL;
+  pixels[ 2 ] = NULL;
+
+  pitches[ 0 ] = 720 * 3;
+  pitches[ 1 ] = 0;
+  pitches[ 2 ] = 0;
+  
+	dv_decoder_t *decoder = dv_decoder_new(FALSE/*this value is unused*/, FALSE, FALSE);
+  decoder->quality = DV_QUALITY_BEST;
+
+  frame = queue->peek();
+  if(!frame) {
+    memset(rgb, 0, sizeof(rgb));
+    return;
+  }
+
+  dv_parse_header(decoder, frame->data);
+  
+  /*
+  decoder->system = e_dv_system_625_50;  // PAL lines, PAL framerate
+  decoder->sampling = e_dv_sample_422;  // 4 bytes y, 2 bytes u, 2 bytes v
+  decoder->std = e_dv_std_iec_61834;
+  decoder->num_dif_seqs = 12;
+  */
+  
+  // libdv img decode to rgb
+  dv_decode_full_frame(decoder,
+                       frame->data,
+                       e_dv_color_rgb,
+                       pixels,
+                       pitches);
+  
+  dv_decoder_free(decoder);
+}
+
 #endif /*USE_GUI*/
diff --git a/src/encoder.h b/src/encoder.h
index 32c5799..31aec20 100644
--- a/src/encoder.h
+++ b/src/encoder.h
@@ -24,6 +24,9 @@
  */
 /*
  * $Log$
+ * Revision 1.8  2005/05/01 11:25:56  deva
+ * Added code to read screenshot from frame queue, decode it to rgb and put it into a qimage.
+ *
  * Revision 1.7  2005/05/01 09:56:26  deva
  * Added Id and Log tags to all files
  *
@@ -73,7 +76,7 @@ public:
   void stop(n_savestate save);
 
   void freeze();
-  void shoot();
+  void shoot(unsigned char *rgb);
 
   void run();
 
@@ -84,6 +87,8 @@ public:
   volatile int *running;
 
 private:
+  void getScreenshot(unsigned char *rgb);
+
   Error *errobj;
   
   int port;
diff --git a/src/mainwindow.cc b/src/mainwindow.cc
index 0346ed3..fccee98 100644
--- a/src/mainwindow.cc
+++ b/src/mainwindow.cc
@@ -27,9 +27,11 @@
  */
 /*
  * $Log$
+ * Revision 1.17  2005/05/01 11:25:56  deva
+ * Added code to read screenshot from frame queue, decode it to rgb and put it into a qimage.
+ *
  * Revision 1.16  2005/05/01 09:56:26  deva
  * Added Id and Log tags to all files
- *
  */
 #include <config.h>
 #ifdef USE_GUI
@@ -330,9 +332,11 @@ void MainWindow::rec_clicked()
 
 void MainWindow::shoot_clicked()
 {
+  unsigned char pixels[720*576*3];
   QImage image;
 
-  camera->snapshot();
+  camera->snapshot(pixels);
+  image.loadFromData(pixels, sizeof(pixels));
   checkErrors();
 
   image = img_live->getScreenshot();
-- 
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