1 /*
2 * libjingle
3 * Copyright 2004 Google Inc.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation
12 * and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #ifndef TALK_MEDIA_BASE_TESTUTILS_H_
29 #define TALK_MEDIA_BASE_TESTUTILS_H_
30
31 #include <string>
32 #include <vector>
33
34 #if !defined(DISABLE_YUV)
35 #include "libyuv/compare.h"
36 #endif
37 #include "talk/base/basictypes.h"
38 #include "talk/base/sigslot.h"
39 #include "talk/base/window.h"
40 #include "talk/media/base/mediachannel.h"
41 #include "talk/media/base/videocapturer.h"
42 #include "talk/media/base/videocommon.h"
43
44 namespace talk_base {
45 class ByteBuffer;
46 class StreamInterface;
47 }
48
49 namespace cricket {
50
51 // Returns size of 420 image with rounding on chroma for odd sizes.
52 #define I420_SIZE(w, h) (w * h + (((w + 1) / 2) * ((h + 1) / 2)) * 2)
53 // Returns size of ARGB image.
54 #define ARGB_SIZE(w, h) (w * h * 4)
55
MakeVector(const T a[],size_t s)56 template <class T> inline std::vector<T> MakeVector(const T a[], size_t s) {
57 return std::vector<T>(a, a + s);
58 }
59 #define MAKE_VECTOR(a) cricket::MakeVector(a, ARRAY_SIZE(a))
60
61 struct RtpDumpPacket;
62 class RtpDumpWriter;
63 class VideoFrame;
64
65 struct RawRtpPacket {
66 void WriteToByteBuffer(uint32 in_ssrc, talk_base::ByteBuffer* buf) const;
67 bool ReadFromByteBuffer(talk_base::ByteBuffer* buf);
68 // Check if this packet is the same as the specified packet except the
69 // sequence number and timestamp, which should be the same as the specified
70 // parameters.
71 bool SameExceptSeqNumTimestampSsrc(
72 const RawRtpPacket& packet, uint16 seq, uint32 ts, uint32 ssc) const;
sizeRawRtpPacket73 int size() const { return 28; }
74
75 uint8 ver_to_cc;
76 uint8 m_to_pt;
77 uint16 sequence_number;
78 uint32 timestamp;
79 uint32 ssrc;
80 char payload[16];
81 };
82
83 struct RawRtcpPacket {
84 void WriteToByteBuffer(talk_base::ByteBuffer* buf) const;
85 bool ReadFromByteBuffer(talk_base::ByteBuffer* buf);
86 bool EqualsTo(const RawRtcpPacket& packet) const;
87
88 uint8 ver_to_count;
89 uint8 type;
90 uint16 length;
91 char payload[16];
92 };
93
94 class RtpTestUtility {
95 public:
96 static size_t GetTestPacketCount();
97
98 // Write the first count number of kTestRawRtcpPackets or kTestRawRtpPackets,
99 // depending on the flag rtcp. If it is RTP, use the specified SSRC. Return
100 // true if successful.
101 static bool WriteTestPackets(
102 size_t count, bool rtcp, uint32 rtp_ssrc, RtpDumpWriter* writer);
103
104 // Loop read the first count number of packets from the specified stream.
105 // Verify the elapsed time of the dump packets increase monotonically. If the
106 // stream is a RTP stream, verify the RTP sequence number, timestamp, and
107 // payload. If the stream is a RTCP stream, verify the RTCP header and
108 // payload.
109 static bool VerifyTestPacketsFromStream(
110 size_t count, talk_base::StreamInterface* stream, uint32 ssrc);
111
112 // Verify the dump packet is the same as the raw RTP packet.
113 static bool VerifyPacket(const RtpDumpPacket* dump,
114 const RawRtpPacket* raw,
115 bool header_only);
116
117 static const uint32 kDefaultSsrc = 1;
118 static const uint32 kRtpTimestampIncrease = 90;
119 static const uint32 kDefaultTimeIncrease = 30;
120 static const uint32 kElapsedTimeInterval = 10;
121 static const RawRtpPacket kTestRawRtpPackets[];
122 static const RawRtcpPacket kTestRawRtcpPackets[];
123
124 private:
RtpTestUtility()125 RtpTestUtility() {}
126 };
127
128 // Test helper for testing VideoCapturer implementations.
129 class VideoCapturerListener : public sigslot::has_slots<> {
130 public:
131 explicit VideoCapturerListener(VideoCapturer* cap);
132
last_capture_state()133 CaptureState last_capture_state() const { return last_capture_state_; }
frame_count()134 int frame_count() const { return frame_count_; }
frame_fourcc()135 uint32 frame_fourcc() const { return frame_fourcc_; }
frame_width()136 int frame_width() const { return frame_width_; }
frame_height()137 int frame_height() const { return frame_height_; }
frame_size()138 uint32 frame_size() const { return frame_size_; }
resolution_changed()139 bool resolution_changed() const { return resolution_changed_; }
140
141 void OnStateChange(VideoCapturer* capturer, CaptureState state);
142 void OnFrameCaptured(VideoCapturer* capturer, const CapturedFrame* frame);
143
144 private:
145 CaptureState last_capture_state_;
146 int frame_count_;
147 uint32 frame_fourcc_;
148 int frame_width_;
149 int frame_height_;
150 uint32 frame_size_;
151 bool resolution_changed_;
152 };
153
154 class ScreencastEventCatcher : public sigslot::has_slots<> {
155 public:
ScreencastEventCatcher()156 ScreencastEventCatcher() : ssrc_(0), ev_(talk_base::WE_RESIZE) { }
ssrc()157 uint32 ssrc() const { return ssrc_; }
event()158 talk_base::WindowEvent event() const { return ev_; }
OnEvent(uint32 ssrc,talk_base::WindowEvent ev)159 void OnEvent(uint32 ssrc, talk_base::WindowEvent ev) {
160 ssrc_ = ssrc;
161 ev_ = ev;
162 }
163 private:
164 uint32 ssrc_;
165 talk_base::WindowEvent ev_;
166 };
167
168 class VideoMediaErrorCatcher : public sigslot::has_slots<> {
169 public:
VideoMediaErrorCatcher()170 VideoMediaErrorCatcher() : ssrc_(0), error_(VideoMediaChannel::ERROR_NONE) { }
ssrc()171 uint32 ssrc() const { return ssrc_; }
error()172 VideoMediaChannel::Error error() const { return error_; }
OnError(uint32 ssrc,VideoMediaChannel::Error error)173 void OnError(uint32 ssrc, VideoMediaChannel::Error error) {
174 ssrc_ = ssrc;
175 error_ = error;
176 }
177 private:
178 uint32 ssrc_;
179 VideoMediaChannel::Error error_;
180 };
181
182 // Returns the absolute path to a file in the testdata/ directory.
183 std::string GetTestFilePath(const std::string& filename);
184
185 // PSNR formula: psnr = 10 * log10 (Peak Signal^2 / mse)
186 // sse is set to a small number for identical frames or sse == 0
ComputePSNR(double sse,double count)187 static inline double ComputePSNR(double sse, double count) {
188 #if !defined(DISABLE_YUV)
189 return libyuv::SumSquareErrorToPsnr(static_cast<uint64>(sse),
190 static_cast<uint64>(count));
191 #else
192 if (sse <= 0.)
193 sse = 65025.0 * count / pow(10., 128./10.); // produces max PSNR of 128
194 return 10.0 * log10(65025.0 * count / sse);
195 #endif
196 }
197
ComputeSumSquareError(const uint8 * org,const uint8 * rec,int size)198 static inline double ComputeSumSquareError(const uint8 *org, const uint8 *rec,
199 int size) {
200 #if !defined(DISABLE_YUV)
201 return static_cast<double>(libyuv::ComputeSumSquareError(org, rec, size));
202 #else
203 double sse = 0.;
204 for (int j = 0; j < size; ++j) {
205 const int diff = static_cast<int>(org[j]) - static_cast<int>(rec[j]);
206 sse += static_cast<double>(diff * diff);
207 }
208 return sse;
209 #endif
210 }
211
212 // Loads the image with the specified prefix and size into |out|.
213 bool LoadPlanarYuvTestImage(const std::string& prefix,
214 int width, int height, uint8* out);
215
216 // Dumps the YUV image out to a file, for visual inspection.
217 // PYUV tool can be used to view dump files.
218 void DumpPlanarYuvTestImage(const std::string& prefix, const uint8* img,
219 int w, int h);
220
221 // Dumps the ARGB image out to a file, for visual inspection.
222 // ffplay tool can be used to view dump files.
223 void DumpPlanarArgbTestImage(const std::string& prefix, const uint8* img,
224 int w, int h);
225
226 // Compare two I420 frames.
227 bool VideoFrameEqual(const VideoFrame* frame0, const VideoFrame* frame1);
228
229 // Checks whether |codecs| contains |codec|; checks using Codec::Matches().
230 template <class C>
ContainsMatchingCodec(const std::vector<C> & codecs,const C & codec)231 bool ContainsMatchingCodec(const std::vector<C>& codecs, const C& codec) {
232 typename std::vector<C>::const_iterator it;
233 for (it = codecs.begin(); it != codecs.end(); ++it) {
234 if (it->Matches(codec)) {
235 return true;
236 }
237 }
238 return false;
239 }
240
241 // Create Simulcast StreamParams with given |ssrcs| and |cname|.
242 cricket::StreamParams CreateSimStreamParams(
243 const std::string& cname, const std::vector<uint32>& ssrcs);
244 // Create Simulcast stream with given |ssrcs| and |rtx_ssrcs|.
245 // The number of |rtx_ssrcs| must match number of |ssrcs|.
246 cricket::StreamParams CreateSimWithRtxStreamParams(
247 const std::string& cname, const std::vector<uint32>& ssrcs,
248 const std::vector<uint32>& rtx_ssrcs);
249
250 } // namespace cricket
251
252 #endif // TALK_MEDIA_BASE_TESTUTILS_H_
253