Pepper: Define PPB_VideoEncoder API + Implementation

ppapi/shared_impl/media_stream_buffer_manager.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ppapi/shared_impl/media_stream_buffer_manager.h"
 
 #include "base/logging.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/shared_impl/media_stream_buffer.h"
 
@@ skipping 33 matching lines @@
   uint8_t* p = reinterpret_cast<uint8_t*>(shm_->memory());
   for (int32_t i = 0; i < number_of_buffers; ++i) {
     if (enqueue_all_buffers)
       buffer_queue_.push_back(i);
     buffers_.push_back(reinterpret_cast<MediaStreamBuffer*>(p));
     p += buffer_size_;
   }
   return true;
 }
 
+int32_t MediaStreamBufferManager::BuffersAvailable() {
+  return buffer_queue_.size();
+}
+
 int32_t MediaStreamBufferManager::DequeueBuffer() {
   if (buffer_queue_.empty())
     return PP_ERROR_FAILED;
   int32_t buffer = buffer_queue_.front();
   buffer_queue_.pop_front();
   return buffer;
 }
 
 std::vector<int32_t> MediaStreamBufferManager::DequeueBuffers() {
   std::vector<int32_t> buffers(buffer_queue_.begin(), buffer_queue_.end());
   buffer_queue_.clear();
   return buffers;
 }
 
 void MediaStreamBufferManager::EnqueueBuffer(int32_t index) {
   CHECK_GE(index, 0) << "Invalid buffer index";
   CHECK_LT(index, number_of_buffers_) << "Invalid buffer index";
   buffer_queue_.push_back(index);
   delegate_->OnNewBufferEnqueued();
 }
 
 MediaStreamBuffer* MediaStreamBufferManager::GetBufferPointer(int32_t index) {
   if (index < 0 || index >= number_of_buffers_)
     return NULL;
   return buffers_[index];
 }
 
+bool MediaStreamBufferManager::ContainsBuffer(MediaStreamBuffer* buffer) {
+  for (std::vector<MediaStreamBuffer*>::const_iterator iter = buffers_.begin();
+       iter != buffers_.end(); ++iter) {
+    if (*iter == buffer)
+      return true;
+  }
+  return false;
+}
+
 }  // namespace ppapi