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 "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
18 namespace libvpx_test {
19
20 const char kVP8Name[] = "WebM Project VP8";
21
PeekStream(const uint8_t * cxdata,size_t size,vpx_codec_stream_info_t * stream_info)22 vpx_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
DecodeFrame(const uint8_t * cxdata,size_t size)28 vpx_codec_err_t Decoder::DecodeFrame(const uint8_t *cxdata, size_t size) {
29 return DecodeFrame(cxdata, size, nullptr);
30 }
31
DecodeFrame(const uint8_t * cxdata,size_t size,void * user_priv)32 vpx_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
IsVP8() const42 bool Decoder::IsVP8() const {
43 const char *codec_name = GetDecoderName();
44 return strncmp(kVP8Name, codec_name, sizeof(kVP8Name) - 1) == 0;
45 }
46
HandlePeekResult(Decoder * const decoder,CompressedVideoSource * video,const vpx_codec_err_t res_peek)47 void 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 }
59 } else {
60 /* The Vp9 implementation of PeekStream returns an error only if the
61 * data passed to it isn't a valid Vp9 chunk. */
62 ASSERT_EQ(VPX_CODEC_OK, res_peek)
63 << "Peek return failed: " << vpx_codec_err_to_string(res_peek);
64 }
65 }
66
RunLoop(CompressedVideoSource * video,const vpx_codec_dec_cfg_t & dec_cfg)67 void DecoderTest::RunLoop(CompressedVideoSource *video,
68 const vpx_codec_dec_cfg_t &dec_cfg) {
69 Decoder *const decoder = codec_->CreateDecoder(dec_cfg, flags_);
70 ASSERT_NE(decoder, nullptr);
71 bool end_of_file = false;
72
73 // Decode frames.
74 for (video->Begin(); !::testing::Test::HasFailure() && !end_of_file;
75 video->Next()) {
76 PreDecodeFrameHook(*video, decoder);
77
78 vpx_codec_stream_info_t stream_info;
79 stream_info.sz = sizeof(stream_info);
80
81 if (video->cxdata() != nullptr) {
82 const vpx_codec_err_t res_peek = decoder->PeekStream(
83 video->cxdata(), video->frame_size(), &stream_info);
84 HandlePeekResult(decoder, video, res_peek);
85 ASSERT_FALSE(::testing::Test::HasFailure());
86
87 vpx_codec_err_t res_dec =
88 decoder->DecodeFrame(video->cxdata(), video->frame_size());
89 if (!HandleDecodeResult(res_dec, *video, decoder)) break;
90 } else {
91 // Signal end of the file to the decoder.
92 const vpx_codec_err_t res_dec = decoder->DecodeFrame(nullptr, 0);
93 ASSERT_EQ(VPX_CODEC_OK, res_dec) << decoder->DecodeError();
94 end_of_file = true;
95 }
96
97 DxDataIterator dec_iter = decoder->GetDxData();
98 const vpx_image_t *img = nullptr;
99
100 // Get decompressed data
101 while (!::testing::Test::HasFailure() && (img = dec_iter.Next())) {
102 DecompressedFrameHook(*img, video->frame_number());
103 }
104 }
105 delete decoder;
106 }
107
RunLoop(CompressedVideoSource * video)108 void DecoderTest::RunLoop(CompressedVideoSource *video) {
109 vpx_codec_dec_cfg_t dec_cfg = vpx_codec_dec_cfg_t();
110 RunLoop(video, dec_cfg);
111 }
112
set_cfg(const vpx_codec_dec_cfg_t & dec_cfg)113 void DecoderTest::set_cfg(const vpx_codec_dec_cfg_t &dec_cfg) {
114 memcpy(&cfg_, &dec_cfg, sizeof(cfg_));
115 }
116
set_flags(const vpx_codec_flags_t flags)117 void DecoderTest::set_flags(const vpx_codec_flags_t flags) { flags_ = flags; }
118
119 } // namespace libvpx_test
120