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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include <dlfcn.h> | |
| 6 #include <fcntl.h> | |
| 7 #include <linux/videodev2.h> | |
| 8 | |
| 9 #include "base/lazy_instance.h" | |
| 10 #include "base/posix/eintr_wrapper.h" | |
| 11 #include "base/trace_event/trace_event.h" | |
| 12 #include "content/common/gpu/media/tegra_v4l2_device.h" | |
| 13 #include "ui/gl/gl_bindings.h" | |
| 14 | |
| 15 namespace content { | |
| 16 | |
| 17 namespace { | |
| 18 const char kDecoderDevice[] = "/dev/tegra_avpchannel"; | |
| 19 const char kEncoderDevice[] = "/dev/nvhost-msenc"; | |
| 20 } | |
| 21 | |
| 22 typedef int32_t (*TegraV4L2Open)(const char* name, int32_t flags); | |
| 23 typedef int32_t (*TegraV4L2Close)(int32_t fd); | |
| 24 typedef int32_t (*TegraV4L2Ioctl)(int32_t fd, unsigned long cmd, ...); | |
| 25 typedef int32_t (*TegraV4L2Poll)(int32_t fd, | |
| 26 bool poll_device, | |
| 27 bool* event_pending); | |
| 28 typedef int32_t (*TegraV4L2SetDevicePollInterrupt)(int32_t fd); | |
| 29 typedef int32_t (*TegraV4L2ClearDevicePollInterrupt)(int32_t fd); | |
| 30 typedef void* (*TegraV4L2Mmap)(void* addr, | |
| 31 size_t length, | |
| 32 int prot, | |
| 33 int flags, | |
| 34 int fd, | |
| 35 unsigned int offset); | |
| 36 typedef int32_t (*TegraV4L2Munmap)(void* addr, size_t length); | |
| 37 typedef int32_t (*TegraV4L2UseEglImage)(int fd, | |
| 38 unsigned int buffer_index, | |
| 39 void* egl_image); | |
| 40 | |
| 41 #define TEGRAV4L2_SYM(name) TegraV4L2##name TegraV4L2_##name = NULL | |
| 42 | |
| 43 TEGRAV4L2_SYM(Open); | |
| 44 TEGRAV4L2_SYM(Close); | |
| 45 TEGRAV4L2_SYM(Ioctl); | |
| 46 TEGRAV4L2_SYM(Poll); | |
| 47 TEGRAV4L2_SYM(SetDevicePollInterrupt); | |
| 48 TEGRAV4L2_SYM(ClearDevicePollInterrupt); | |
| 49 TEGRAV4L2_SYM(Mmap); | |
| 50 TEGRAV4L2_SYM(Munmap); | |
| 51 TEGRAV4L2_SYM(UseEglImage); | |
| 52 | |
| 53 #undef TEGRAV4L2_SYM | |
| 54 | |
| 55 class TegraFunctionSymbolFinder { | |
| 56 public: | |
| 57 TegraFunctionSymbolFinder() : initialized_(false) { | |
| 58 if (!dlopen("/usr/lib/libtegrav4l2.so", | |
| 59 RTLD_NOW | RTLD_GLOBAL | RTLD_NODELETE)) { | |
| 60 DLOG(ERROR) << "Failed to load libtegrav4l2.so"; | |
| 61 return; | |
| 62 } | |
| 63 #define TEGRAV4L2_DLSYM_OR_RETURN_ON_ERROR(name) \ | |
| 64 do { \ | |
| 65 TegraV4L2_##name = reinterpret_cast<TegraV4L2##name>( \ | |
| 66 dlsym(RTLD_DEFAULT, "TegraV4L2_" #name)); \ | |
| 67 if (TegraV4L2_##name == NULL) { \ | |
| 68 LOG(ERROR) << "Failed to dlsym TegraV4L2_" #name; \ | |
| 69 return; \ | |
| 70 } \ | |
| 71 } while (0) | |
| 72 | |
| 73 TEGRAV4L2_DLSYM_OR_RETURN_ON_ERROR(Open); | |
| 74 TEGRAV4L2_DLSYM_OR_RETURN_ON_ERROR(Close); | |
| 75 TEGRAV4L2_DLSYM_OR_RETURN_ON_ERROR(Ioctl); | |
| 76 TEGRAV4L2_DLSYM_OR_RETURN_ON_ERROR(Poll); | |
| 77 TEGRAV4L2_DLSYM_OR_RETURN_ON_ERROR(SetDevicePollInterrupt); | |
| 78 TEGRAV4L2_DLSYM_OR_RETURN_ON_ERROR(ClearDevicePollInterrupt); | |
| 79 TEGRAV4L2_DLSYM_OR_RETURN_ON_ERROR(Mmap); | |
| 80 TEGRAV4L2_DLSYM_OR_RETURN_ON_ERROR(Munmap); | |
| 81 TEGRAV4L2_DLSYM_OR_RETURN_ON_ERROR(UseEglImage); | |
| 82 #undef TEGRAV4L2_DLSYM | |
| 83 initialized_ = true; | |
| 84 } | |
| 85 | |
| 86 bool initialized() { return initialized_; } | |
| 87 | |
| 88 private: | |
| 89 bool initialized_; | |
| 90 }; | |
| 91 | |
| 92 base::LazyInstance<TegraFunctionSymbolFinder> g_tegra_function_symbol_finder_ = | |
| 93 LAZY_INSTANCE_INITIALIZER; | |
| 94 | |
| 95 TegraV4L2Device::TegraV4L2Device(Type type) | |
| 96 : V4L2Device(type), | |
| 97 device_fd_(-1) { | |
| 98 } | |
| 99 | |
| 100 TegraV4L2Device::~TegraV4L2Device() { | |
| 101 if (device_fd_ != -1) { | |
| 102 TegraV4L2_Close(device_fd_); | |
| 103 device_fd_ = -1; | |
| 104 } | |
| 105 } | |
| 106 | |
| 107 int TegraV4L2Device::Ioctl(int flags, void* arg) { | |
| 108 return HANDLE_EINTR(TegraV4L2_Ioctl(device_fd_, flags, arg)); | |
| 109 } | |
| 110 | |
| 111 bool TegraV4L2Device::Poll(bool poll_device, bool* event_pending) { | |
| 112 if (HANDLE_EINTR(TegraV4L2_Poll(device_fd_, poll_device, event_pending)) == | |
| 113 -1) { | |
| 114 LOG(ERROR) << "TegraV4L2Poll returned -1 "; | |
| 115 return false; | |
| 116 } | |
| 117 return true; | |
| 118 } | |
| 119 | |
| 120 void* TegraV4L2Device::Mmap(void* addr, | |
| 121 unsigned int len, | |
| 122 int prot, | |
| 123 int flags, | |
| 124 unsigned int offset) { | |
| 125 return TegraV4L2_Mmap(addr, len, prot, flags, device_fd_, offset); | |
| 126 } | |
| 127 | |
| 128 void TegraV4L2Device::Munmap(void* addr, unsigned int len) { | |
| 129 TegraV4L2_Munmap(addr, len); | |
| 130 } | |
| 131 | |
| 132 bool TegraV4L2Device::SetDevicePollInterrupt() { | |
| 133 if (HANDLE_EINTR(TegraV4L2_SetDevicePollInterrupt(device_fd_)) == -1) { | |
| 134 LOG(ERROR) << "Error in calling TegraV4L2SetDevicePollInterrupt"; | |
| 135 return false; | |
| 136 } | |
| 137 return true; | |
| 138 } | |
| 139 | |
| 140 bool TegraV4L2Device::ClearDevicePollInterrupt() { | |
| 141 if (HANDLE_EINTR(TegraV4L2_ClearDevicePollInterrupt(device_fd_)) == -1) { | |
| 142 LOG(ERROR) << "Error in calling TegraV4L2ClearDevicePollInterrupt"; | |
| 143 return false; | |
| 144 } | |
| 145 return true; | |
| 146 } | |
| 147 | |
| 148 bool TegraV4L2Device::Initialize() { | |
| 149 const char* device_path = NULL; | |
| 150 switch (type_) { | |
| 151 case kDecoder: | |
| 152 device_path = kDecoderDevice; | |
| 153 break; | |
| 154 case kEncoder: | |
| 155 device_path = kEncoderDevice; | |
| 156 break; | |
| 157 default: | |
| 158 DVLOG(1) << "Device type " << type_ << " not supported on this platform"; | |
| 159 return false; | |
| 160 } | |
| 161 | |
| 162 if (!g_tegra_function_symbol_finder_.Get().initialized()) { | |
| 163 DLOG(ERROR) << "Unable to initialize functions"; | |
| 164 return false; | |
| 165 } | |
| 166 device_fd_ = HANDLE_EINTR( | |
| 167 TegraV4L2_Open(device_path, O_RDWR | O_NONBLOCK | O_CLOEXEC)); | |
| 168 if (device_fd_ == -1) { | |
| 169 DLOG(ERROR) << "Unable to open device " << device_path; | |
| 170 return false; | |
| 171 } | |
| 172 return true; | |
| 173 } | |
| 174 | |
| 175 std::vector<base::ScopedFD> TegraV4L2Device::GetDmabufsForV4L2Buffer( | |
| 176 int /* index */, | |
| 177 size_t num_planes, | |
| 178 enum v4l2_buf_type /* type */) { | |
| 179 std::vector<base::ScopedFD> dmabuf_fds; | |
| 180 // Tegra does not actually provide dmabuf fds currently. Fill the vector with | |
| 181 // invalid descriptors to prevent the caller from failing on an empty vector | |
| 182 // being returned. TegraV4L2Device::CreateEGLImage() will ignore the invalid | |
| 183 // descriptors and create images based on V4L2 index passed to it. | |
| 184 dmabuf_fds.resize(num_planes); | |
| 185 return dmabuf_fds; | |
| 186 } | |
| 187 | |
| 188 bool TegraV4L2Device::CanCreateEGLImageFrom(uint32_t v4l2_pixfmt) { | |
| 189 return v4l2_pixfmt == V4L2_PIX_FMT_NV12M; | |
| 190 } | |
| 191 | |
| 192 EGLImageKHR TegraV4L2Device::CreateEGLImage( | |
| 193 EGLDisplay egl_display, | |
| 194 EGLContext egl_context, | |
| 195 GLuint texture_id, | |
| 196 const gfx::Size& /* size */, | |
| 197 unsigned int buffer_index, | |
| 198 uint32_t v4l2_pixfmt, | |
| 199 const std::vector<base::ScopedFD>& /* dmabuf_fds */) { | |
| 200 DVLOG(3) << "CreateEGLImage()"; | |
| 201 if (!CanCreateEGLImageFrom(v4l2_pixfmt)) { | |
| 202 LOG(ERROR) << "Unsupported V4L2 pixel format"; | |
| 203 return EGL_NO_IMAGE_KHR; | |
| 204 } | |
| 205 | |
| 206 EGLint attr = EGL_NONE; | |
| 207 EGLImageKHR egl_image = | |
| 208 eglCreateImageKHR(egl_display, | |
| 209 egl_context, | |
| 210 EGL_GL_TEXTURE_2D_KHR, | |
| 211 reinterpret_cast<EGLClientBuffer>(texture_id), | |
| 212 &attr); | |
| 213 if (egl_image == EGL_NO_IMAGE_KHR) { | |
| 214 LOG(ERROR) << "Unable to create EGL image"; | |
| 215 return egl_image; | |
| 216 } | |
| 217 if (TegraV4L2_UseEglImage(device_fd_, buffer_index, egl_image) != 0) { | |
| 218 LOG(ERROR) << "Unable to use EGL image"; | |
| 219 eglDestroyImageKHR(egl_display, egl_image); | |
| 220 egl_image = EGL_NO_IMAGE_KHR; | |
| 221 } | |
| 222 return egl_image; | |
| 223 } | |
| 224 | |
| 225 EGLBoolean TegraV4L2Device::DestroyEGLImage(EGLDisplay egl_display, | |
| 226 EGLImageKHR egl_image) { | |
| 227 return eglDestroyImageKHR(egl_display, egl_image); | |
| 228 } | |
| 229 | |
| 230 GLenum TegraV4L2Device::GetTextureTarget() { return GL_TEXTURE_2D; } | |
| 231 | |
| 232 uint32_t TegraV4L2Device::PreferredInputFormat() { | |
| 233 // TODO(posciak): We should support "dontcare" returns here once we | |
| 234 // implement proper handling (fallback, negotiation) for this in users. | |
| 235 CHECK_EQ(type_, kEncoder); | |
| 236 return V4L2_PIX_FMT_YUV420M; | |
| 237 } | |
| 238 | |
| 239 } // namespace content | |
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Chromium Code Reviews
Issue 1882373004:
Migrate content/common/gpu/media code to media/gpu (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master