1/*
2 *  Copyright (c) 2012 The WebM 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 "third_party/googletest/src/include/gtest/gtest.h"
12
13#include "test/codec_factory.h"
14#include "test/decode_test_driver.h"
15#include "test/register_state_check.h"
16#include "test/video_source.h"
17
18namespace libvpx_test {
19
20const char kVP8Name[] = "WebM Project VP8";
21
22vpx_codec_err_t Decoder::PeekStream(const uint8_t *cxdata, size_t size,
23                                    vpx_codec_stream_info_t *stream_info) {
24  return vpx_codec_peek_stream_info(
25      CodecInterface(), cxdata, static_cast<unsigned int>(size), stream_info);
26}
27
28vpx_codec_err_t Decoder::DecodeFrame(const uint8_t *cxdata, size_t size) {
29  return DecodeFrame(cxdata, size, NULL);
30}
31
32vpx_codec_err_t Decoder::DecodeFrame(const uint8_t *cxdata, size_t size,
33                                     void *user_priv) {
34  vpx_codec_err_t res_dec;
35  InitOnce();
36  API_REGISTER_STATE_CHECK(
37      res_dec = vpx_codec_decode(
38          &decoder_, cxdata, static_cast<unsigned int>(size), user_priv, 0));
39  return res_dec;
40}
41
42bool Decoder::IsVP8() const {
43  const char *codec_name = GetDecoderName();
44  return strncmp(kVP8Name, codec_name, sizeof(kVP8Name) - 1) == 0;
45}
46
47void DecoderTest::HandlePeekResult(Decoder *const decoder,
48                                   CompressedVideoSource *video,
49                                   const vpx_codec_err_t res_peek) {
50  const bool is_vp8 = decoder->IsVP8();
51  if (is_vp8) {
52    /* Vp8's implementation of PeekStream returns an error if the frame you
53     * pass it is not a keyframe, so we only expect VPX_CODEC_OK on the first
54     * frame, which must be a keyframe. */
55    if (video->frame_number() == 0)
56      ASSERT_EQ(VPX_CODEC_OK, res_peek)
57          << "Peek return failed: " << vpx_codec_err_to_string(res_peek);
58  } else {
59    /* The Vp9 implementation of PeekStream returns an error only if the
60     * data passed to it isn't a valid Vp9 chunk. */
61    ASSERT_EQ(VPX_CODEC_OK, res_peek)
62        << "Peek return failed: " << vpx_codec_err_to_string(res_peek);
63  }
64}
65
66void DecoderTest::RunLoop(CompressedVideoSource *video,
67                          const vpx_codec_dec_cfg_t &dec_cfg) {
68  Decoder *const decoder = codec_->CreateDecoder(dec_cfg, flags_);
69  ASSERT_TRUE(decoder != NULL);
70  bool end_of_file = false;
71
72  // Decode frames.
73  for (video->Begin(); !::testing::Test::HasFailure() && !end_of_file;
74       video->Next()) {
75    PreDecodeFrameHook(*video, decoder);
76
77    vpx_codec_stream_info_t stream_info;
78    stream_info.sz = sizeof(stream_info);
79
80    if (video->cxdata() != NULL) {
81      const vpx_codec_err_t res_peek = decoder->PeekStream(
82          video->cxdata(), video->frame_size(), &stream_info);
83      HandlePeekResult(decoder, video, res_peek);
84      ASSERT_FALSE(::testing::Test::HasFailure());
85
86      vpx_codec_err_t res_dec =
87          decoder->DecodeFrame(video->cxdata(), video->frame_size());
88      if (!HandleDecodeResult(res_dec, *video, decoder)) break;
89    } else {
90      // Signal end of the file to the decoder.
91      const vpx_codec_err_t res_dec = decoder->DecodeFrame(NULL, 0);
92      ASSERT_EQ(VPX_CODEC_OK, res_dec) << decoder->DecodeError();
93      end_of_file = true;
94    }
95
96    DxDataIterator dec_iter = decoder->GetDxData();
97    const vpx_image_t *img = NULL;
98
99    // Get decompressed data
100    while ((img = dec_iter.Next())) {
101      DecompressedFrameHook(*img, video->frame_number());
102    }
103  }
104  delete decoder;
105}
106
107void DecoderTest::RunLoop(CompressedVideoSource *video) {
108  vpx_codec_dec_cfg_t dec_cfg = vpx_codec_dec_cfg_t();
109  RunLoop(video, dec_cfg);
110}
111
112void DecoderTest::set_cfg(const vpx_codec_dec_cfg_t &dec_cfg) {
113  memcpy(&cfg_, &dec_cfg, sizeof(cfg_));
114}
115
116void DecoderTest::set_flags(const vpx_codec_flags_t flags) { flags_ = flags; }
117
118}  // namespace libvpx_test
119