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1 // Copyright 2013 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 "webkit/renderer/media/crypto/ppapi/fake_cdm_video_decoder.h" | |
6 | |
7 #include "base/logging.h" | |
8 #include "webkit/renderer/media/crypto/ppapi/cdm/content_decryption_module.h" | |
9 | |
10 namespace webkit_media { | |
11 | |
12 FakeCdmVideoDecoder::FakeCdmVideoDecoder(cdm::Host* host) | |
13 : is_initialized_(false), | |
14 host_(host) { | |
15 } | |
16 | |
17 FakeCdmVideoDecoder::~FakeCdmVideoDecoder() { | |
18 Deinitialize(); | |
19 } | |
20 | |
21 bool FakeCdmVideoDecoder::Initialize(const cdm::VideoDecoderConfig& config) { | |
22 DVLOG(1) << "Initialize()"; | |
23 | |
24 video_size_ = config.coded_size; | |
25 is_initialized_ = true; | |
26 return true; | |
27 } | |
28 | |
29 void FakeCdmVideoDecoder::Deinitialize() { | |
30 DVLOG(1) << "Deinitialize()"; | |
31 is_initialized_ = false; | |
32 } | |
33 | |
34 void FakeCdmVideoDecoder::Reset() { | |
35 DVLOG(1) << "Reset()"; | |
36 } | |
37 | |
38 // Creates a YV12 video frame. | |
39 cdm::Status FakeCdmVideoDecoder::DecodeFrame(const uint8_t* compressed_frame, | |
40 int32_t compressed_frame_size, | |
41 int64_t timestamp, | |
42 cdm::VideoFrame* decoded_frame) { | |
43 DVLOG(1) << "DecodeFrame()"; | |
44 | |
45 // The fake decoder does not buffer any frames internally. So if the input is | |
46 // empty (EOS), just return kNeedMoreData. | |
47 if (!decoded_frame) | |
48 return cdm::kNeedMoreData; | |
49 | |
50 // Choose non-zero alignment and padding on purpose for testing. | |
51 const int kAlignment = 8; | |
52 const int kPadding = 16; | |
53 const int kPlanePadding = 128; | |
54 | |
55 int width = video_size_.width; | |
56 int height = video_size_.height; | |
57 DCHECK_EQ(width % 2, 0); | |
58 DCHECK_EQ(height % 2, 0); | |
59 | |
60 int y_stride = (width + kAlignment - 1) / kAlignment * kAlignment + kPadding; | |
61 int uv_stride = | |
62 (width / 2 + kAlignment - 1) / kAlignment * kAlignment + kPadding; | |
63 int y_rows = height; | |
64 int uv_rows = height / 2; | |
65 int y_offset = 0; | |
66 int v_offset = y_stride * y_rows + kPlanePadding; | |
67 int u_offset = v_offset + uv_stride * uv_rows + kPlanePadding; | |
68 int frame_size = u_offset + uv_stride * uv_rows + kPlanePadding; | |
69 | |
70 decoded_frame->SetFrameBuffer(host_->Allocate(frame_size)); | |
71 decoded_frame->FrameBuffer()->SetSize(frame_size); | |
72 | |
73 decoded_frame->SetFormat(cdm::kYv12); | |
74 decoded_frame->SetSize(video_size_); | |
75 decoded_frame->SetPlaneOffset(cdm::VideoFrame::kYPlane, y_offset); | |
76 decoded_frame->SetPlaneOffset(cdm::VideoFrame::kVPlane, v_offset); | |
77 decoded_frame->SetPlaneOffset(cdm::VideoFrame::kUPlane, u_offset); | |
78 decoded_frame->SetStride(cdm::VideoFrame::kYPlane, y_stride); | |
79 decoded_frame->SetStride(cdm::VideoFrame::kVPlane, uv_stride); | |
80 decoded_frame->SetStride(cdm::VideoFrame::kUPlane, uv_stride); | |
81 decoded_frame->SetTimestamp(timestamp); | |
82 | |
83 static unsigned char color = 0; | |
84 color += 10; | |
85 | |
86 memset(reinterpret_cast<void*>(decoded_frame->FrameBuffer()->Data()), | |
87 color, frame_size); | |
88 | |
89 return cdm::kSuccess; | |
90 } | |
91 | |
92 } // namespace webkit_media | |
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