From d74c7a00c417cffdc93a82efa2841e23d823bea6 Mon Sep 17 00:00:00 2001
From: deva <deva>
Date: Thu, 19 May 2005 14:10:22 +0000
Subject: Multithreading rulez?

---
 src/mov_encoder_thread.cc | 96 +++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 85 insertions(+), 11 deletions(-)

(limited to 'src/mov_encoder_thread.cc')

diff --git a/src/mov_encoder_thread.cc b/src/mov_encoder_thread.cc
index be86377..ed71a31 100644
--- a/src/mov_encoder_thread.cc
+++ b/src/mov_encoder_thread.cc
@@ -31,6 +31,10 @@
 
 /*
  * $Log$
+ * Revision 1.6  2005/05/19 14:10:22  deva
+ *
+ * Multithreading rulez?
+ *
  * Revision 1.5  2005/05/19 10:55:49  deva
  * Test for block encoding of length strlen("IPIPP").
  *
@@ -61,43 +65,113 @@ MovEncoderThread::MovEncoderThread(const char *filename)
     fprintf(stderr, "Could not open file for writing: %s\n", strerror(errno));
     return;
   }
-  threads = 4;
+
+  threads = config->readInt("encoding_threads");
 
   for(int cnt = 0; cnt < threads; cnt++) {
     encs.push_back(new MovEncoder());
+    tids.push_back(new pthread_t);
+    pthread_create (tids[cnt], NULL, thread_run, encs[cnt]);
   }
 
-  int current_encoder = 0;
-  int current_frame = 0;
+  current_encoder = 0;
+  current_frame = 0;
 
-  int num_frames_in_block = config->readString("frame_sequence")->length();
+  num_frames_in_block = config->readString("frame_sequence")->length();
   fprintf(stderr, "Frame sequence length [%d]\n", num_frames_in_block); fflush(stderr);
+
+  inputqueue = new Queue<Frame>();
 }
 
 MovEncoderThread::~MovEncoderThread()
 {
+    
+  fprintf(stderr, "Clear - encode last[%d]\n", current_encoder); fflush(stderr);
+    
+  // Push any hanging frames.
+  encs[current_encoder]->encodeSequence(inputqueue);
+    
+  fprintf(stderr, "Clear - Readback\n"); fflush(stderr);
+    
+  /*
+   * Readback mode
+   */
+  for(int cnt = 0; cnt <= current_encoder; cnt++) {
+    
+    //    fprintf(stderr, "pop[%d]-", cnt); fflush(stderr);
+    
+    Queue<Frame> *outputqueue = encs[cnt]->getResultSequence();
+    Frame *f;
+    while((f = outputqueue->pop())) {
+      int i = write(file, f->data, f->size);
+      if(i == -1) perror("Write failed");
+      
+      //      fprintf(stderr, "wrote[%d]-", i); fflush(stderr);
+      
+      delete f;
+    }
+  }
+  
+  fprintf(stderr, "Clear - join threads\n"); fflush(stderr);
+
   for(int cnt = 0; cnt < threads; cnt++) {
+    encs[cnt]->running = false;
+    encs[cnt]->encodeSequence(NULL);
+    pthread_join(*tids[cnt], NULL);
     delete encs[cnt];
   }
+
+  fprintf(stderr, "Clear - close file\n"); fflush(stderr);
+
   if(file != -1) close(file);
+
+  fprintf(stderr, "Clear - done\n"); fflush(stderr);
+
 }
 
 void MovEncoderThread::encode(Frame* frame)
 {
   if(file == -1) return;
 
-  Frame *enc_frame = encs[current_encoder]->encode(frame);
-  //  fprintf(stderr, "[%d]", enc_frame->size); fflush(stderr);
-  int i = write(file, enc_frame->data, enc_frame->size);
-  if(i == -1) perror("Write failed");
-  delete enc_frame;
-
+  //  fprintf(stderr, "build[%d]-", current_encoder); fflush(stderr);
+  inputqueue->bpush(frame);
+  
+  /*
+   * Encode mode
+   */
   // Switch frame
   current_frame++;
   if(current_frame >= num_frames_in_block) {
+
+    //    fprintf(stderr, "push[%d]-", current_encoder); fflush(stderr);
+
+    encs[current_encoder]->encodeSequence(inputqueue);
+    inputqueue = new Queue<Frame>();
+
     // Switch encoder
     current_frame = 0;
     current_encoder++;
-    if(current_encoder >= threads) current_encoder = 0;
+    if(current_encoder >= threads) {
+      // switch mode
+      /*
+       * Readback mode
+       */
+      for(int cnt = 0; cnt < threads; cnt++) {
+
+        //        fprintf(stderr, "pop[%d]-", cnt); fflush(stderr);
+
+        Queue<Frame> *outputqueue = encs[cnt]->getResultSequence();
+        Frame *f;
+        while((f = outputqueue->pop())) {
+          int i = write(file, f->data, f->size);
+          if(i == -1) perror("Write failed");
+
+          //          fprintf(stderr, "wrote[%d]-", i); fflush(stderr);
+
+          delete f;
+        }
+      }
+      current_encoder = 0;
+    }
   }
 }
-- 
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