1/*
2 *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
3 *
4 *  Use of this source code is governed by a BSD-style license
5 *  that can be found in the LICENSE file in the root of the source
6 *  tree. An additional intellectual property rights grant can be found
7 *  in the file PATENTS.  All contributing project authors may
8 *  be found in the AUTHORS file in the root of the source tree.
9 */
10
11#include "webrtc/test/fake_decoder.h"
12
13#include "testing/gtest/include/gtest/gtest.h"
14
15namespace webrtc {
16namespace test {
17
18FakeDecoder::FakeDecoder() : callback_(NULL) {}
19
20int32_t FakeDecoder::InitDecode(const VideoCodec* config,
21                                int32_t number_of_cores) {
22  config_ = *config;
23  size_t width = config->width;
24  size_t height = config->height;
25  frame_.CreateEmptyFrame(static_cast<int>(width),
26                          static_cast<int>(height),
27                          static_cast<int>(width),
28                          static_cast<int>((width + 1) / 2),
29                          static_cast<int>((width + 1) / 2));
30  return WEBRTC_VIDEO_CODEC_OK;
31}
32
33int32_t FakeDecoder::Decode(const EncodedImage& input,
34                            bool missing_frames,
35                            const RTPFragmentationHeader* fragmentation,
36                            const CodecSpecificInfo* codec_specific_info,
37                            int64_t render_time_ms) {
38  frame_.set_timestamp(input._timeStamp);
39  frame_.set_ntp_time_ms(input.ntp_time_ms_);
40  frame_.set_render_time_ms(render_time_ms);
41
42  callback_->Decoded(frame_);
43
44  return WEBRTC_VIDEO_CODEC_OK;
45}
46
47int32_t FakeDecoder::RegisterDecodeCompleteCallback(
48    DecodedImageCallback* callback) {
49  callback_ = callback;
50  return WEBRTC_VIDEO_CODEC_OK;
51}
52
53int32_t FakeDecoder::Release() {
54  return WEBRTC_VIDEO_CODEC_OK;
55}
56
57int32_t FakeDecoder::Reset() {
58  return WEBRTC_VIDEO_CODEC_OK;
59}
60
61const char* FakeDecoder::kImplementationName = "fake_decoder";
62const char* FakeDecoder::ImplementationName() const {
63  return kImplementationName;
64}
65
66int32_t FakeH264Decoder::Decode(const EncodedImage& input,
67                                bool missing_frames,
68                                const RTPFragmentationHeader* fragmentation,
69                                const CodecSpecificInfo* codec_specific_info,
70                                int64_t render_time_ms) {
71  uint8_t value = 0;
72  for (size_t i = 0; i < input._length; ++i) {
73    uint8_t kStartCode[] = {0, 0, 0, 1};
74    if (i < input._length - sizeof(kStartCode) &&
75        !memcmp(&input._buffer[i], kStartCode, sizeof(kStartCode))) {
76      i += sizeof(kStartCode) + 1;  // Skip start code and NAL header.
77    }
78    if (input._buffer[i] != value) {
79      EXPECT_EQ(value, input._buffer[i])
80          << "Bitstream mismatch between sender and receiver.";
81      return -1;
82    }
83    ++value;
84  }
85  return FakeDecoder::Decode(input,
86                             missing_frames,
87                             fragmentation,
88                             codec_specific_info,
89                             render_time_ms);
90}
91
92}  // namespace test
93}  // namespace webrtc
94