1 | /* |
2 | * Copyright (C) 2012, 2015, 2016 Igalia S.L |
3 | * Copyright (C) 2015, 2016 Metrological Group B.V. |
4 | * |
5 | * This library is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU Lesser General Public |
7 | * License as published by the Free Software Foundation; either |
8 | * version 2 of the License, or (at your option) any later version. |
9 | * |
10 | * This library is distributed in the hope that it will be useful, |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | * Lesser General Public License for more details. |
14 | * |
15 | * You should have received a copy of the GNU Lesser General Public |
16 | * License along with this library; if not, write to the Free Software |
17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
18 | */ |
19 | |
20 | #pragma once |
21 | |
22 | #if USE(GSTREAMER) |
23 | #include "FloatSize.h" |
24 | #include "GRefPtrGStreamer.h" |
25 | #include "GUniquePtrGStreamer.h" |
26 | #include <gst/gst.h> |
27 | #include <gst/video/video-format.h> |
28 | #include <gst/video/video-info.h> |
29 | #include <wtf/MediaTime.h> |
30 | #include <wtf/ThreadSafeRefCounted.h> |
31 | |
32 | namespace WebCore { |
33 | |
34 | class IntSize; |
35 | class SharedBuffer; |
36 | |
37 | inline bool webkitGstCheckVersion(guint major, guint minor, guint micro) |
38 | { |
39 | guint currentMajor, currentMinor, currentMicro, currentNano; |
40 | gst_version(¤tMajor, ¤tMinor, ¤tMicro, ¤tNano); |
41 | |
42 | if (currentMajor < major) |
43 | return false; |
44 | if (currentMajor > major) |
45 | return true; |
46 | |
47 | if (currentMinor < minor) |
48 | return false; |
49 | if (currentMinor > minor) |
50 | return true; |
51 | |
52 | if (currentMicro < micro) |
53 | return false; |
54 | |
55 | return true; |
56 | } |
57 | |
58 | #define GST_VIDEO_CAPS_TYPE_PREFIX "video/" |
59 | #define GST_AUDIO_CAPS_TYPE_PREFIX "audio/" |
60 | #define GST_TEXT_CAPS_TYPE_PREFIX "text/" |
61 | |
62 | GstPad* webkitGstGhostPadFromStaticTemplate(GstStaticPadTemplate*, const gchar* name, GstPad* target); |
63 | #if ENABLE(VIDEO) |
64 | bool getVideoSizeAndFormatFromCaps(GstCaps*, WebCore::IntSize&, GstVideoFormat&, int& pixelAspectRatioNumerator, int& pixelAspectRatioDenominator, int& stride); |
65 | Optional<FloatSize> getVideoResolutionFromCaps(const GstCaps*); |
66 | bool getSampleVideoInfo(GstSample*, GstVideoInfo&); |
67 | #endif |
68 | const char* capsMediaType(const GstCaps*); |
69 | bool doCapsHaveType(const GstCaps*, const char*); |
70 | bool areEncryptedCaps(const GstCaps*); |
71 | Vector<String> extractGStreamerOptionsFromCommandLine(); |
72 | bool initializeGStreamer(Optional<Vector<String>>&& = WTF::nullopt); |
73 | bool initializeGStreamerAndRegisterWebKitElements(); |
74 | unsigned getGstPlayFlag(const char* nick); |
75 | uint64_t toGstUnsigned64Time(const MediaTime&); |
76 | |
77 | inline GstClockTime toGstClockTime(const MediaTime &mediaTime) |
78 | { |
79 | return static_cast<GstClockTime>(toGstUnsigned64Time(mediaTime)); |
80 | } |
81 | |
82 | class GstMappedBuffer : public ThreadSafeRefCounted<GstMappedBuffer> { |
83 | public: |
84 | static RefPtr<GstMappedBuffer> create(GstBuffer* buffer, GstMapFlags flags) |
85 | { |
86 | GstMapInfo info; |
87 | if (!gst_buffer_map(buffer, &info, flags)) |
88 | return nullptr; |
89 | return adoptRef(new GstMappedBuffer(buffer, WTFMove(info))); |
90 | } |
91 | |
92 | // Unfortunately, GST_MAP_READWRITE is defined out of line from the MapFlags |
93 | // enum as an int, and C++ is careful to not implicity convert it to an enum. |
94 | static RefPtr<GstMappedBuffer> create(GstBuffer* buffer, int flags) |
95 | { |
96 | return GstMappedBuffer::create(buffer, static_cast<GstMapFlags>(flags)); |
97 | } |
98 | |
99 | ~GstMappedBuffer() |
100 | { |
101 | gst_buffer_unmap(m_buffer, &m_info); |
102 | } |
103 | |
104 | uint8_t* data() { return static_cast<uint8_t*>(m_info.data); } |
105 | const uint8_t* data() const { return static_cast<uint8_t*>(m_info.data); } |
106 | size_t size() const { return static_cast<size_t>(m_info.size); } |
107 | bool isSharable() const { return !(m_info.flags & GST_MAP_WRITE); } |
108 | Ref<SharedBuffer> createSharedBuffer(); |
109 | |
110 | private: |
111 | GstMappedBuffer(GstBuffer* buffer, GstMapInfo&& info) |
112 | : m_buffer(buffer) |
113 | , m_info(WTFMove(info)) |
114 | { |
115 | } |
116 | |
117 | friend bool operator==(const GstMappedBuffer&, const GstMappedBuffer&); |
118 | friend bool operator==(const GstMappedBuffer&, const GstBuffer*); |
119 | friend bool operator==(const GstBuffer* a, const GstMappedBuffer& b) { return operator==(b, a); } |
120 | |
121 | GstBuffer* m_buffer { nullptr }; |
122 | GstMapInfo m_info; |
123 | }; |
124 | |
125 | inline bool operator==(const GstMappedBuffer& a, const GstMappedBuffer& b) |
126 | { |
127 | return a.size() == b.size() && !gst_buffer_memcmp(a.m_buffer, 0, b.data(), b.size()); |
128 | } |
129 | |
130 | inline bool operator==(const GstMappedBuffer& a, const GstBuffer* b) |
131 | { |
132 | GstBuffer* nonConstB = const_cast<GstBuffer*>(b); |
133 | return a.size() == gst_buffer_get_size(nonConstB) && !gst_buffer_memcmp(nonConstB, 0, a.data(), a.size()); |
134 | } |
135 | |
136 | class GstMappedFrame { |
137 | WTF_MAKE_NONCOPYABLE(GstMappedFrame); |
138 | public: |
139 | |
140 | GstMappedFrame(GstBuffer* buffer, GstVideoInfo info, GstMapFlags flags) |
141 | { |
142 | m_isValid = gst_video_frame_map(&m_frame, &info, buffer, flags); |
143 | } |
144 | |
145 | GstMappedFrame(GRefPtr<GstSample> sample, GstMapFlags flags) |
146 | { |
147 | GstVideoInfo info; |
148 | |
149 | if (!gst_video_info_from_caps(&info, gst_sample_get_caps(sample.get()))) { |
150 | m_isValid = false; |
151 | return; |
152 | } |
153 | |
154 | m_isValid = gst_video_frame_map(&m_frame, &info, gst_sample_get_buffer(sample.get()), flags); |
155 | } |
156 | |
157 | GstVideoFrame* get() |
158 | { |
159 | if (!m_isValid) { |
160 | GST_INFO("Invalid frame, returning NULL" ); |
161 | |
162 | return nullptr; |
163 | } |
164 | |
165 | return &m_frame; |
166 | } |
167 | |
168 | uint8_t* ComponentData(int comp) |
169 | { |
170 | return GST_VIDEO_FRAME_COMP_DATA(&m_frame, comp); |
171 | } |
172 | |
173 | int ComponentStride(int stride) |
174 | { |
175 | return GST_VIDEO_FRAME_COMP_STRIDE(&m_frame, stride); |
176 | } |
177 | |
178 | GstVideoInfo* info() |
179 | { |
180 | if (!m_isValid) { |
181 | GST_INFO("Invalid frame, returning NULL" ); |
182 | |
183 | return nullptr; |
184 | } |
185 | |
186 | return &m_frame.info; |
187 | } |
188 | |
189 | int width() |
190 | { |
191 | return m_isValid ? GST_VIDEO_FRAME_WIDTH(&m_frame) : -1; |
192 | } |
193 | |
194 | int height() |
195 | { |
196 | return m_isValid ? GST_VIDEO_FRAME_HEIGHT(&m_frame) : -1; |
197 | } |
198 | |
199 | int format() |
200 | { |
201 | return m_isValid ? GST_VIDEO_FRAME_FORMAT(&m_frame) : GST_VIDEO_FORMAT_UNKNOWN; |
202 | } |
203 | |
204 | ~GstMappedFrame() |
205 | { |
206 | if (m_isValid) |
207 | gst_video_frame_unmap(&m_frame); |
208 | m_isValid = false; |
209 | } |
210 | |
211 | explicit operator bool() const { return m_isValid; } |
212 | |
213 | private: |
214 | GstVideoFrame m_frame; |
215 | bool m_isValid { false }; |
216 | }; |
217 | |
218 | |
219 | void connectSimpleBusMessageCallback(GstElement* pipeline); |
220 | void disconnectSimpleBusMessageCallback(GstElement* pipeline); |
221 | |
222 | } |
223 | |
224 | #ifndef GST_BUFFER_DTS_OR_PTS |
225 | #define GST_BUFFER_DTS_OR_PTS(buffer) (GST_BUFFER_DTS_IS_VALID(buffer) ? GST_BUFFER_DTS(buffer) : GST_BUFFER_PTS(buffer)) |
226 | #endif |
227 | #endif // USE(GSTREAMER) |
228 | |