ppb_video_decoder_shared.cc revision a1401311d1ab56c4ed0a474bd38c108f75cb0cd9 
1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "ppapi/shared_impl/ppb_video_decoder_shared.h"
6
7#include "base/logging.h"
8#include "gpu/command_buffer/client/gles2_implementation.h"
9#include "ppapi/c/pp_errors.h"
10#include "ppapi/shared_impl/ppb_graphics_3d_shared.h"
11#include "ppapi/shared_impl/resource_tracker.h"
12#include "ppapi/thunk/enter.h"
13
14namespace ppapi {
15
16PPB_VideoDecoder_Shared::PPB_VideoDecoder_Shared(PP_Instance instance)
17    : Resource(OBJECT_IS_IMPL, instance),
18      graphics_context_(0),
19      gles2_impl_(NULL) {}
20
21PPB_VideoDecoder_Shared::PPB_VideoDecoder_Shared(
22    const HostResource& host_resource)
23    : Resource(OBJECT_IS_PROXY, host_resource),
24      graphics_context_(0),
25      gles2_impl_(NULL) {}
26
27PPB_VideoDecoder_Shared::~PPB_VideoDecoder_Shared() {
28  // Destroy() must be called before the object is destroyed.
29  DCHECK(graphics_context_ == 0);
30}
31
32thunk::PPB_VideoDecoder_API* PPB_VideoDecoder_Shared::AsPPB_VideoDecoder_API() {
33  return this;
34}
35
36void PPB_VideoDecoder_Shared::InitCommon(
37    PP_Resource graphics_context,
38    gpu::gles2::GLES2Implementation* gles2_impl) {
39  DCHECK(graphics_context);
40  DCHECK(!gles2_impl_ && !graphics_context_);
41  gles2_impl_ = gles2_impl;
42  PpapiGlobals::Get()->GetResourceTracker()->AddRefResource(graphics_context);
43  graphics_context_ = graphics_context;
44}
45
46void PPB_VideoDecoder_Shared::Destroy() {
47  if (graphics_context_) {
48    PpapiGlobals::Get()->GetResourceTracker()->ReleaseResource(
49        graphics_context_);
50    graphics_context_ = 0;
51  }
52  gles2_impl_ = NULL;
53}
54
55bool PPB_VideoDecoder_Shared::SetFlushCallback(
56    scoped_refptr<TrackedCallback> callback) {
57  if (TrackedCallback::IsPending(flush_callback_))
58    return false;
59  flush_callback_ = callback;
60  return true;
61}
62
63bool PPB_VideoDecoder_Shared::SetResetCallback(
64    scoped_refptr<TrackedCallback> callback) {
65  if (TrackedCallback::IsPending(reset_callback_))
66    return false;
67  reset_callback_ = callback;
68  return true;
69}
70
71bool PPB_VideoDecoder_Shared::SetBitstreamBufferCallback(
72    int32 bitstream_buffer_id,
73    scoped_refptr<TrackedCallback> callback) {
74  return bitstream_buffer_callbacks_.insert(std::make_pair(bitstream_buffer_id,
75                                                           callback)).second;
76}
77
78void PPB_VideoDecoder_Shared::RunFlushCallback(int32 result) {
79  flush_callback_->Run(result);
80}
81
82void PPB_VideoDecoder_Shared::RunResetCallback(int32 result) {
83  reset_callback_->Run(result);
84}
85
86void PPB_VideoDecoder_Shared::RunBitstreamBufferCallback(
87    int32 bitstream_buffer_id,
88    int32 result) {
89  CallbackById::iterator it =
90      bitstream_buffer_callbacks_.find(bitstream_buffer_id);
91  DCHECK(it != bitstream_buffer_callbacks_.end());
92  scoped_refptr<TrackedCallback> cc = it->second;
93  bitstream_buffer_callbacks_.erase(it);
94  cc->Run(PP_OK);
95}
96
97void PPB_VideoDecoder_Shared::FlushCommandBuffer() {
98  // Ensure that graphics_context is still live before using gles2_impl_.
99  // Our "plugin reference" is not enough to keep graphics_context alive if
100  // DidDeleteInstance() has been called.
101  if (PpapiGlobals::Get()->GetResourceTracker()->GetResource(
102          graphics_context_)) {
103    if (gles2_impl_)
104      gles2_impl_->Flush();
105  }
106}
107
108}  // namespace ppapi
109