From 6d7b4b50ca9f159b9c422d6e7668c33ddd7992a1 Mon Sep 17 00:00:00 2001
From: deva <deva>
Date: Mon, 2 May 2005 10:35:23 +0000
Subject: Fixed wrongly showed snapshot thumbnails.

---
 src/decoder.cc | 80 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 80 insertions(+)

(limited to 'src/decoder.cc')

diff --git a/src/decoder.cc b/src/decoder.cc
index ac076a4..214e8bc 100644
--- a/src/decoder.cc
+++ b/src/decoder.cc
@@ -25,6 +25,9 @@
  */
 /*
  * $Log$
+ * Revision 1.24  2005/05/02 10:35:23  deva
+ * Fixed wrongly showed snapshot thumbnails.
+ *
  * Revision 1.23  2005/05/02 09:58:43  deva
  *
  * Fixed initial values of the stae bools.
@@ -44,6 +47,13 @@
 #include <fcntl.h>
 #include <errno.h>
 */
+
+#include <time.h>
+
+// Use libdv
+#include <libdv/dv.h>
+#include <libdv/dv_types.h>
+
 #include <SDL/SDL.h>
 
 #include "dv1394.h"
@@ -67,13 +77,18 @@ Decoder::Decoder(Error* err,
   player_queue = gplayer_queue;
   mutex = gmutex;
   running = grunning;
+
   b_shoot = false;
   b_freeze = false;
   b_record = false; // Initially no recording is done.
+
+  pthread_mutex_init (&shot_mutex, NULL);
+  shot = NULL;
 }
 
 Decoder::~Decoder()
 {
+  pthread_mutex_destroy(&shot_mutex);
 }
 
 void Decoder::decode()
@@ -99,6 +114,19 @@ void Decoder::decode()
     b_freeze = false;
     local_record = b_record;
 
+    if(b_shoot) {
+      pthread_mutex_lock(&shot_mutex);
+      if(!shot) shot = new Frame(ptr, DVPACKAGE_SIZE);
+      pthread_mutex_unlock(&shot_mutex);
+    }
+    
+    if(b_freeze) {
+      pthread_mutex_lock(&shot_mutex);
+      if(shot) delete shot;
+      shot = new Frame(ptr, DVPACKAGE_SIZE);
+      pthread_mutex_unlock(&shot_mutex);
+    }
+
     Frame *eframe = new Frame(ptr, DVPACKAGE_SIZE);
     eframe->shoot = local_shoot;
     eframe->freeze = local_freeze;
@@ -147,7 +175,26 @@ void Decoder::freeze()
  */
 void Decoder::shoot(unsigned char *rgb)
 {
+  struct timespec ts;
+
   b_shoot = true;
+
+  // Wait for shot to be taken
+  while(1) {
+    pthread_mutex_lock(&shot_mutex);
+    if(shot) {
+      getScreenshot(shot, rgb);
+      delete shot;
+      shot = NULL;
+      pthread_mutex_unlock(&shot_mutex);
+      return;
+    }
+    pthread_mutex_unlock(&shot_mutex);
+
+    ts.tv_sec = 0;
+    ts.tv_nsec = 100000000L;	// 100ms
+    nanosleep(&ts, NULL);
+  }
 }
 
 /*
@@ -166,5 +213,38 @@ void Decoder::stop(n_savestate save)
   b_record = false;
 }
 
+void Decoder::getScreenshot(Frame *frame, unsigned char *rgb)
+{
+  unsigned char *pixels[3];
+  int pitches[3];
+
+  pixels[ 0 ] = rgb;
+  pixels[ 1 ] = NULL;
+  pixels[ 2 ] = NULL;
+
+  pitches[ 0 ] = 720 * 4;
+  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;
+
+  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_bgr0,
+                       pixels,
+                       pitches);
+  
+  dv_decoder_free(decoder);
+}
+
 
 #endif /*USE_GUI*/
-- 
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