Add CDM video decoder.

webkit/media/crypto/ppapi/clear_key_cdm.cc

 // Copyright (c) 2012 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 "webkit/media/crypto/ppapi/clear_key_cdm.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/time.h"
 #include "media/base/decoder_buffer.h"
+#include "webkit/media/crypto/ppapi/ffmpeg_video_decoder.h"
 
 static const char kClearKeyCdmVersion[] = "0.1.0.0";
 
 static scoped_refptr<media::DecoderBuffer> CopyDecoderBufferFrom(
     const cdm::InputBuffer& input_buffer) {
   // TODO(tomfinegan): Get rid of this copy.
   scoped_refptr<media::DecoderBuffer> output_buffer =
       media::DecoderBuffer::CopyFrom(input_buffer.data, input_buffer.data_size);
 
   std::vector<media::SubsampleEntry> subsamples;
@@ skipping 174 matching lines @@
     scoped_refptr<media::DecoderBuffer>* buffer_copy,
     media::Decryptor::Status status,
     const scoped_refptr<media::DecoderBuffer>& buffer) {
   *status_copy = status;
   *buffer_copy = buffer;
 }
 
 cdm::Status ClearKeyCdm::Decrypt(
     const cdm::InputBuffer& encrypted_buffer,
     cdm::DecryptedBlock* decrypted_block) {
-  DVLOG(1) << "Decrypt()";
+  DVLOG(1) << "ClearKeyCdm::Decrypt()";

[ddorwin, 2012/10/13 03:54:42]

Filename is already included in the log message.

[Tom Finegan, 2012/10/13 23:47:26]

Done.

 
   scoped_refptr<media::DecoderBuffer> decoder_buffer =
       CopyDecoderBufferFrom(encrypted_buffer);
 
   // Callback is called synchronously, so we can use variables on the stack.
   media::Decryptor::Status status;
   scoped_refptr<media::DecoderBuffer> buffer;
   decryptor_.Decrypt(decoder_buffer,
                      base::Bind(&CopyDecryptResults, &status, &buffer));
 
@@ skipping 10 matching lines @@
   memcpy(reinterpret_cast<void*>(decrypted_block->buffer()->data()),
          buffer->GetData(),
          data_size);
 
   decrypted_block->set_timestamp(buffer->GetTimestamp().InMicroseconds());
   return cdm::kSuccess;
 }
 
 cdm::Status ClearKeyCdm::InitializeVideoDecoder(
     const cdm::VideoDecoderConfig& video_decoder_config) {
-  NOTIMPLEMENTED();
-  return cdm::kSessionError;
+  video_decoder_.reset(new webkit_media::FFmpegVideoDecoder(allocator_));
+  if (!video_decoder_->Initialize(video_decoder_config))
+    return cdm::kSessionError;
+
+  return cdm::kSuccess;
 }
 
-void ClearKeyCdm::ResetDecoder(cdm::StreamType) {
-  NOTIMPLEMENTED();
+void ClearKeyCdm::ResetDecoder(cdm::StreamType decoder_type) {
+  DCHECK(decoder_type == cdm::kStreamTypeVideo);
+  video_decoder_->Reset();
 }
 
-void ClearKeyCdm::DeinitializeDecoder(cdm::StreamType) {
-  NOTIMPLEMENTED();
+void ClearKeyCdm::DeinitializeDecoder(cdm::StreamType decoder_type) {
+  DCHECK(decoder_type == cdm::kStreamTypeVideo);
+  video_decoder_->Deinitialize();
 }
 
 cdm::Status ClearKeyCdm::DecryptAndDecodeFrame(
     const cdm::InputBuffer& encrypted_buffer,
-    cdm::VideoFrame* video_frame) {
-  NOTIMPLEMENTED();
-  return cdm::kDecryptError;
+    cdm::VideoFrame* decoded_frame) {
+  scoped_refptr<media::DecoderBuffer> decoder_buffer =
+      CopyDecoderBufferFrom(encrypted_buffer);
+
+  // Callback is called synchronously, so we can use variables on the stack.
+  media::Decryptor::Status status;
+  scoped_refptr<media::DecoderBuffer> buffer;
+  decryptor_.Decrypt(decoder_buffer,
+                     base::Bind(&CopyDecryptResults, &status, &buffer));
+
+  if (status == media::Decryptor::kNoKey)
+    return cdm::kNoKey;
+

[ddorwin, 2012/10/13 03:54:42]

Need to handle kDecryptError. Then DCHECK(kSuccess).

[Tom Finegan, 2012/10/13 23:47:26]

Done.

+  DCHECK(buffer);
+  int data_size = buffer->GetDataSize();

[ddorwin, 2012/10/13 03:54:42]

why do we need this?

[Tom Finegan, 2012/10/13 23:47:26]

Removed.

+
+  if (!video_decoder_->DecodeFrame(buffer.get()->GetData(), data_size,
+                                   encrypted_buffer.timestamp,
+                                   decoded_frame)) {
+    LOG(ERROR) << "ClearKeyCdm::DecryptAndDecodeFrame() DecodeFrame failed";
+    return cdm::kDecodeError;
+  }
+
+  return cdm::kSuccess;
 }
 
 }  // namespace webkit_media