Refactor media::InputBuffer to consolidate it with media::Buffer

Rename media::InputBuffer to media::OmxInputBuffer and inherit from
media::Buffer. Also provide the timestamp to media::OmxCodec.

TEST=omx_test
BUG=32753

Review URL: http://codereview.chromium.org/577012

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@38247 0039d316-1c4b-4281-b951-d872f2087c98

4 files changed, 38 insertions, 37 deletions

diff --git a/media/omx/omx_codec.cc b/media/omx/omx_codec.cc
index 71387d1..6b8d95e 100644
--- a/media/omx/omx_codec.cc
+++ b/media/omx/omx_codec.cc
@@ -8,8 +8,8 @@
 #include "base/message_loop.h"
 #include "base/stl_util-inl.h"
 #include "base/string_util.h"
-#include "media/omx/input_buffer.h"
 #include "media/omx/omx_codec.h"
+#include "media/omx/omx_input_buffer.h"
 
 namespace media {
 
@@ -82,7 +82,7 @@ void OmxCodec::Read(ReadCallback* callback) {
       NewRunnableMethod(this, &OmxCodec::ReadTask, callback));
 }
 
-void OmxCodec::Feed(InputBuffer* buffer, FeedCallback* callback) {
+void OmxCodec::Feed(OmxInputBuffer* buffer, FeedCallback* callback) {
   message_loop_->PostTask(
       FROM_HERE,
       NewRunnableMethod(this, &OmxCodec::FeedTask, buffer, callback));
@@ -159,7 +159,8 @@ void OmxCodec::ReadTask(ReadCallback* callback) {
   FillBufferTask();
 }
 
-void OmxCodec::FeedTask(InputBuffer* buffer, FeedCallback* callback) {
+void OmxCodec::FeedTask(OmxInputBuffer* buffer,
+                        FeedCallback* callback) {
   DCHECK_EQ(message_loop_, MessageLoop::current());
 
   if (!CanAcceptInput()) {
@@ -246,7 +247,7 @@ void OmxCodec::FreeInputQueue() {
   DCHECK_EQ(message_loop_, MessageLoop::current());
 
   while (!input_queue_.empty()) {
-    InputBuffer* buffer = input_queue_.front().first;
+    OmxInputBuffer* buffer = input_queue_.front().first;
     FeedCallback* callback = input_queue_.front().second;
     callback->Run(buffer);
     delete callback;
@@ -964,7 +965,7 @@ void OmxCodec::EmptyBufferTask() {
   while (!input_queue_.empty() &&
          !available_input_buffers_.empty() &&
          !input_eos_) {
-    InputBuffer* buffer = input_queue_.front().first;
+    OmxInputBuffer* buffer = input_queue_.front().first;
     FeedCallback* callback = input_queue_.front().second;
     OMX_BUFFERHEADERTYPE* omx_buffer = available_input_buffers_.front();
     available_input_buffers_.pop();
@@ -984,7 +985,7 @@ void OmxCodec::EmptyBufferTask() {
     omx_buffer->nFilledLen = filled;
     omx_buffer->pAppPrivate = this;
     omx_buffer->nFlags |= input_eos_ ? OMX_BUFFERFLAG_EOS : 0;
-    // TODO(hclam): Get timestamp from the input buffer and fill in here.
+    omx_buffer->nTimeStamp = buffer->GetTimestamp().InMilliseconds();
 
     // Give this buffer to OMX.
     OMX_ERRORTYPE ret = OMX_EmptyThisBuffer(component_handle_, omx_buffer);
diff --git a/media/omx/omx_codec.h b/media/omx/omx_codec.h
index fac10c6..0eb94b8 100644
--- a/media/omx/omx_codec.h
+++ b/media/omx/omx_codec.h
@@ -15,10 +15,10 @@
 // // Initialization.
 // MessageLoop message_loop;
 // OmxCodec* decoder = new OmxCodec(&message_loop);
-// OmxCodec::OmxMediaFormat input_format, output_format;
+// OmxConfigurator::MediaFormat input_format, output_format;
 // input_format.codec = OmxCodec::kCodecH264;
 // output_format.codec = OmxCodec::kCodecRaw;
-// decoder->Setup(input_format, output_format);
+// decoder->Setup(new OmxDecoderConfigurator(input_format, output_format));
 // decoder->SetErrorCallback(NewCallback(this, &Client::ErrorCallback));
 // decoder->SetFormatCallback(NewCallback(this, &Client::FormatCallback));
 //
@@ -29,7 +29,7 @@
 // // queue the input buffers and output requests and process them until
 // // the decoder can actually process them.
 // for (int i = 0; i < kInitialBuffers; ++i) {
-//   InputBuffer* buffer = PrepareInitialInputBuffer();
+//   OmxInputBuffer* buffer = PrepareInitialInputBuffer();
 //   decoder->Feed(buffer, NewCallback(this, &Client::FeedCallback));
 // }
 //
@@ -40,7 +40,7 @@
 // decoder->Stop(NewCallback(this, &Client::StopCallback));
 //
 // A typical FeedCallback will look like:
-// void Client::FeedCallback(InputBuffer* buffer) {
+// void Client::FeedCallback(OmxInputBuffer* buffer) {
 //   // We have read to the end so stop feeding.
 //   if (buffer->Eos())
 //     return;
@@ -95,18 +95,19 @@
 #include "third_party/openmax/il/OMX_Core.h"
 #include "third_party/openmax/il/OMX_Video.h"
 
-class InputBuffer;
 class MessageLoop;
 
 namespace media {
 
+class OmxInputBuffer;
+
 class OmxCodec : public base::RefCountedThreadSafe<OmxCodec> {
  public:
   // TODO(jiesun): remove callback parameters.
   typedef Callback2<
       const OmxConfigurator::MediaFormat&,
       const OmxConfigurator::MediaFormat&>::Type FormatCallback;
-  typedef Callback1<InputBuffer*>::Type FeedCallback;
+  typedef Callback1<OmxInputBuffer*>::Type FeedCallback;
   typedef Callback2<uint8*, int>::Type ReadCallback;
   typedef Callback0::Type Callback;
 
@@ -139,7 +140,7 @@ class OmxCodec : public base::RefCountedThreadSafe<OmxCodec> {
 
   // Feed the decoder with |buffer|. When the decoder has consumed the
   // buffer |callback| is called with |buffer| being the parameter.
-  void Feed(InputBuffer* buffer, FeedCallback* callback);
+  void Feed(OmxInputBuffer* buffer, FeedCallback* callback);
 
   // Flush the decoder and reset its end-of-stream state.
   void Flush(Callback* callback);
@@ -169,7 +170,7 @@ class OmxCodec : public base::RefCountedThreadSafe<OmxCodec> {
   void StartTask();
   void StopTask(Callback* callback);
   void ReadTask(ReadCallback* callback);
-  void FeedTask(InputBuffer* buffer, FeedCallback* callback);
+  void FeedTask(OmxInputBuffer* buffer, FeedCallback* callback);
 
   // Helper method to perform tasks when this object is stopped.
   void DoneStop();
@@ -309,7 +310,7 @@ class OmxCodec : public base::RefCountedThreadSafe<OmxCodec> {
   scoped_ptr<Callback> error_callback_;
 
   // Input and output queue for encoded data and decoded frames.
-  typedef std::pair<InputBuffer*, FeedCallback*> InputUnit;
+  typedef std::pair<OmxInputBuffer*, FeedCallback*> InputUnit;
   std::queue<InputUnit> input_queue_;
   std::queue<ReadCallback*> output_queue_;
 
diff --git a/media/omx/input_buffer.cc b/media/omx/omx_input_buffer.cc
index c26b9f7..b4864fe 100644
--- a/media/omx/input_buffer.cc
+++ b/media/omx/omx_input_buffer.cc
@@ -2,7 +2,7 @@
 // source code is governed by a BSD-style license that can be found in the
 // LICENSE file.
 
-#include "media/omx/input_buffer.h"
+#include "media/omx/omx_input_buffer.h"
 
 #include <algorithm>
 
@@ -10,34 +10,30 @@
 
 namespace media {
 
-InputBuffer::InputBuffer()
+OmxInputBuffer::OmxInputBuffer()
     : size_(0),
       used_(0) {
 }
 
-InputBuffer::InputBuffer(uint8* data, int size)
+OmxInputBuffer::OmxInputBuffer(uint8* data, int size)
     : data_(data),
       size_(size),
       used_(0) {
   DCHECK_GE(size, 0);
 }
 
-InputBuffer::~InputBuffer() {
+OmxInputBuffer::~OmxInputBuffer() {
 }
 
-int InputBuffer::Read(uint8* output_data, int output_size) {
+int OmxInputBuffer::Read(uint8* output_data, int output_size) {
   int copy = std::min(output_size, size_ - used_);
   memcpy(output_data, data_.get() + used_, copy);
   used_ += copy;
   return copy;
 }
 
-bool InputBuffer::Used() {
+bool OmxInputBuffer::Used() {
   return used_ == size_;
 }
 
-bool InputBuffer::IsEndOfStream() {
-  return data_.get() == NULL || size_ == 0;
-}
-
 }  // namespace media
diff --git a/media/omx/input_buffer.h b/media/omx/omx_input_buffer.h
index 9c6f442..10a9049 100644
--- a/media/omx/input_buffer.h
+++ b/media/omx/omx_input_buffer.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2009 The Chromium Authors. All rights reserved.  Use of this
+// Copyright (c) 2010 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.
 
@@ -7,25 +7,25 @@
 //
 // This object is implemened using system memory.
 
-#ifndef MEDIA_OMX_INPUT_BUFFER_H_
-#define MEDIA_OMX_INPUT_BUFFER_H_
+#ifndef MEDIA_OMX_OMX_INPUT_BUFFER_H_
+#define MEDIA_OMX_OMX_INPUT_BUFFER_H_
 
 #include "base/basictypes.h"
 #include "base/scoped_ptr.h"
+#include "media/base/buffers.h"
 
 namespace media {
 
-// TODO(hclam): consolidate our buffer implementations http://crbug.com/28654
-class InputBuffer {
+class OmxInputBuffer : public Buffer {
  public:
   // Creates an empty input buffer.
-  InputBuffer();
+  OmxInputBuffer();
 
   // Creates an input buffer given |data| and |size|.
   // After construction, this object will be given the ownership of
   // |data| and is responsible for deleting it.
-  InputBuffer(uint8* data, int size);
-  ~InputBuffer();
+  OmxInputBuffer(uint8* data, int size);
+  virtual ~OmxInputBuffer();
 
   // Read from the this buffer into |data| with the maximum |size| bytes.
   // Returns number of bytes read. If a read is successful, the number
@@ -36,15 +36,18 @@ class InputBuffer {
   // Returns true if this buffer is used.
   bool Used();
 
-  // Returns true if this is an end-of-stream buffer.
-  bool IsEndOfStream();
-
  private:
+  virtual const uint8* GetData() const { return data_.get(); }
+
+  virtual size_t GetDataSize() const { return size_; }
+
   scoped_array<uint8> data_;
   int size_;
   int used_;
+
+  DISALLOW_COPY_AND_ASSIGN(OmxInputBuffer);
 };
 
 }  // namespace media
 
-#endif  // MEDIA_OMX_INPUT_BUFFER_H_
+#endif  // MEDIA_OMX_OMX_INPUT_BUFFER_H_