media: Support SetCdm() on VideoDecodeAccelerator interface.

content/common/gpu/gpu_messages.h

 // 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.
 
 // Multiply-included message file, hence no include guard here, but see below
 // for a much smaller-than-usual include guard section.
 
 #include <string>
 #include <vector>
 
@@ skipping 664 matching lines @@
                            bool /* succeeded */)
 
 //------------------------------------------------------------------------------
 // Accelerated Video Decoder Messages
 // These messages are sent from Renderer process to GPU process.
 
 // Send input buffer for decoding.
 IPC_MESSAGE_ROUTED1(AcceleratedVideoDecoderMsg_Decode,
                     AcceleratedVideoDecoderMsg_Decode_Params)
 
-// Sent from Renderer process to the GPU process to give the texture IDs for
-// the textures the decoder will use for output.
+// Give the texture IDs for the textures the decoder will use for output.
 IPC_MESSAGE_ROUTED2(AcceleratedVideoDecoderMsg_AssignPictureBuffers,
                     std::vector<int32>,  /* Picture buffer ID */
                     std::vector<uint32>) /* Texture ID */
 
 // Send from Renderer process to the GPU process to recycle the given picture
 // buffer for further decoding.
 IPC_MESSAGE_ROUTED1(AcceleratedVideoDecoderMsg_ReusePictureBuffer,
                     int32) /* Picture buffer ID */
 
 // Send flush request to the decoder.
 IPC_MESSAGE_ROUTED0(AcceleratedVideoDecoderMsg_Flush)
 
 // Send reset request to the decoder.
 IPC_MESSAGE_ROUTED0(AcceleratedVideoDecoderMsg_Reset)
 
+// Set a CDM on the decoder to handle encrypted buffers.
+IPC_MESSAGE_ROUTED1(AcceleratedVideoDecoderMsg_SetCdm,
+                    int32) /* CDM ID */
+
 // Send destroy request to the decoder.
 IPC_MESSAGE_ROUTED0(AcceleratedVideoDecoderMsg_Destroy)
 
 //------------------------------------------------------------------------------
 // Accelerated Video Decoder Host Messages
 // These messages are sent from GPU process to Renderer process.
 // Inform AcceleratedVideoDecoderHost that AcceleratedVideoDecoder has been
 // created.
 
 // Accelerated video decoder has consumed input buffer from transfer buffer.
@@ skipping 18 matching lines @@
                     int32,     /* Bitstream buffer ID */
                     gfx::Rect, /* Visible rectangle */
                     bool)      /* Buffer is HW overlay capable */
 
 // Confirm decoder has been flushed.
 IPC_MESSAGE_ROUTED0(AcceleratedVideoDecoderHostMsg_FlushDone)
 
 // Confirm decoder has been reset.
 IPC_MESSAGE_ROUTED0(AcceleratedVideoDecoderHostMsg_ResetDone)
 
+// Notify the CDM setting result.
+IPC_MESSAGE_ROUTED1(AcceleratedVideoDecoderHostMsg_CdmSet,

[liberato (no reviews please), 2015/11/11 23:29:10]

if you're feeling sufficiently obsessive-compulsive, then please reorder to
match gpu_video_decode_accelerator, which itself doesn't match
video_decode_accelerator.h .  these were out of order before, though.

[dcheng, 2015/11/12 18:48:43]

I think this could be named more intuitively (because naively, you might read
this as setting the cdm too).

Maybe SetCdmDone to match Reset/ResetDone?

[xhwang, 2015/11/13 01:16:55]

I fixed gpu_vda, which is in a mess.

[xhwang, 2015/11/13 01:16:55]

Renamed to CdmAttached which is already used in various places:

https://code.google.com/p/chromium/codesearch#search/&q=CdmAttached&sq=packag...

+                    bool) /* success */
+
 // Video decoder has encountered an error.
 IPC_MESSAGE_ROUTED1(AcceleratedVideoDecoderHostMsg_ErrorNotification,
                     uint32) /* Error ID */
 
 //------------------------------------------------------------------------------
 // Accelerated Video Encoder Messages
 // These messages are sent from the Renderer process to GPU process.
 
 // Queue a video frame to the encoder to encode. |frame_id| will be returned
 // by AcceleratedVideoEncoderHostMsg_NotifyInputDone.
@@ skipping 58 matching lines @@
 IPC_MESSAGE_ROUTED0(AcceleratedJpegDecoderMsg_Destroy)
 
 //------------------------------------------------------------------------------
 // Accelerated JPEG Decoder Host Messages
 // These messages are sent from the GPU process to Browser process.
 //
 // Report decode status.
 IPC_MESSAGE_ROUTED2(AcceleratedJpegDecoderHostMsg_DecodeAck,
                     int32, /* bitstream_buffer_id */
                     media::JpegDecodeAccelerator::Error /* error */)