Migrate content/common/gpu/media code to media/gpu

content/common/gpu/media/generic_v4l2_device.cc

Index: content/common/gpu/media/generic_v4l2_device.cc
diff --git a/content/common/gpu/media/generic_v4l2_device.cc b/content/common/gpu/media/generic_v4l2_device.cc
deleted file mode 100644
index 5438f15bb728cde84fb7c65ebfdbc202937cbc0e..0000000000000000000000000000000000000000
--- a/content/common/gpu/media/generic_v4l2_device.cc
+++ /dev/null
@@ -1,322 +0,0 @@
-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-//
-
-#include "content/common/gpu/media/generic_v4l2_device.h"
-
-#include <errno.h>
-#include <fcntl.h>
-#include <libdrm/drm_fourcc.h>
-#include <linux/videodev2.h>
-#include <poll.h>
-#include <string.h>
-#include <sys/eventfd.h>
-#include <sys/ioctl.h>
-#include <sys/mman.h>
-
-#include <memory>
-
-#include "base/files/scoped_file.h"
-#include "base/macros.h"
-#include "base/posix/eintr_wrapper.h"
-#include "base/trace_event/trace_event.h"
-#include "build/build_config.h"
-#include "ui/gl/egl_util.h"
-#include "ui/gl/gl_bindings.h"
-
-#if defined(USE_LIBV4L2)
-// Auto-generated for dlopen libv4l2 libraries
-#include "content/common/gpu/media/v4l2_stubs.h"
-#include "third_party/v4l-utils/lib/include/libv4l2.h"
-
-using content_common_gpu_media::kModuleV4l2;
-using content_common_gpu_media::InitializeStubs;
-using content_common_gpu_media::StubPathMap;
-
-static const base::FilePath::CharType kV4l2Lib[] =
-    FILE_PATH_LITERAL("/usr/lib/libv4l2.so");
-#endif
-
-namespace content {
-
-namespace {
-const char kDecoderDevice[] = "/dev/video-dec";
-const char kEncoderDevice[] = "/dev/video-enc";
-const char kImageProcessorDevice[] = "/dev/image-proc0";
-const char kJpegDecoderDevice[] = "/dev/jpeg-dec";
-}
-
-GenericV4L2Device::GenericV4L2Device(Type type)
-    : V4L2Device(type),
-      use_libv4l2_(false) {
-}
-
-GenericV4L2Device::~GenericV4L2Device() {
-#if defined(USE_LIBV4L2)
-  if (use_libv4l2_ && device_fd_.is_valid())
-    v4l2_close(device_fd_.release());
-#endif
-}
-
-int GenericV4L2Device::Ioctl(int request, void* arg) {
-#if defined(USE_LIBV4L2)
-  if (use_libv4l2_)
-    return HANDLE_EINTR(v4l2_ioctl(device_fd_.get(), request, arg));
-#endif
-  return HANDLE_EINTR(ioctl(device_fd_.get(), request, arg));
-}
-
-bool GenericV4L2Device::Poll(bool poll_device, bool* event_pending) {
-  struct pollfd pollfds[2];
-  nfds_t nfds;
-  int pollfd = -1;
-
-  pollfds[0].fd = device_poll_interrupt_fd_.get();
-  pollfds[0].events = POLLIN | POLLERR;
-  nfds = 1;
-
-  if (poll_device) {
-    DVLOG(3) << "Poll(): adding device fd to poll() set";
-    pollfds[nfds].fd = device_fd_.get();
-    pollfds[nfds].events = POLLIN | POLLOUT | POLLERR | POLLPRI;
-    pollfd = nfds;
-    nfds++;
-  }
-
-  if (HANDLE_EINTR(poll(pollfds, nfds, -1)) == -1) {
-    DPLOG(ERROR) << "poll() failed";
-    return false;
-  }
-  *event_pending = (pollfd != -1 && pollfds[pollfd].revents & POLLPRI);
-  return true;
-}
-
-void* GenericV4L2Device::Mmap(void* addr,
-                             unsigned int len,
-                             int prot,
-                             int flags,
-                             unsigned int offset) {
-  return mmap(addr, len, prot, flags, device_fd_.get(), offset);
-}
-
-void GenericV4L2Device::Munmap(void* addr, unsigned int len) {
-  munmap(addr, len);
-}
-
-bool GenericV4L2Device::SetDevicePollInterrupt() {
-  DVLOG(3) << "SetDevicePollInterrupt()";
-
-  const uint64_t buf = 1;
-  if (HANDLE_EINTR(write(device_poll_interrupt_fd_.get(), &buf, sizeof(buf))) ==
-      -1) {
-    DPLOG(ERROR) << "SetDevicePollInterrupt(): write() failed";
-    return false;
-  }
-  return true;
-}
-
-bool GenericV4L2Device::ClearDevicePollInterrupt() {
-  DVLOG(3) << "ClearDevicePollInterrupt()";
-
-  uint64_t buf;
-  if (HANDLE_EINTR(read(device_poll_interrupt_fd_.get(), &buf, sizeof(buf))) ==
-      -1) {
-    if (errno == EAGAIN) {
-      // No interrupt flag set, and we're reading nonblocking.  Not an error.
-      return true;
-    } else {
-      DPLOG(ERROR) << "ClearDevicePollInterrupt(): read() failed";
-      return false;
-    }
-  }
-  return true;
-}
-
-bool GenericV4L2Device::Initialize() {
-  const char* device_path = NULL;
-  static bool v4l2_functions_initialized = PostSandboxInitialization();
-  if (!v4l2_functions_initialized) {
-    LOG(ERROR) << "Failed to initialize LIBV4L2 libs";
-    return false;
-  }
-
-  switch (type_) {
-    case kDecoder:
-      device_path = kDecoderDevice;
-      break;
-    case kEncoder:
-      device_path = kEncoderDevice;
-      break;
-    case kImageProcessor:
-      device_path = kImageProcessorDevice;
-      break;
-    case kJpegDecoder:
-      device_path = kJpegDecoderDevice;
-      break;
-  }
-
-  DVLOG(2) << "Initialize(): opening device: " << device_path;
-  // Open the video device.
-  device_fd_.reset(
-      HANDLE_EINTR(open(device_path, O_RDWR | O_NONBLOCK | O_CLOEXEC)));
-  if (!device_fd_.is_valid()) {
-    return false;
-  }
-#if defined(USE_LIBV4L2)
-  if (type_ == kEncoder &&
-      HANDLE_EINTR(v4l2_fd_open(device_fd_.get(), V4L2_DISABLE_CONVERSION)) !=
-          -1) {
-    DVLOG(2) << "Using libv4l2 for " << device_path;
-    use_libv4l2_ = true;
-  }
-#endif
-
-  device_poll_interrupt_fd_.reset(eventfd(0, EFD_NONBLOCK | EFD_CLOEXEC));
-  if (!device_poll_interrupt_fd_.is_valid()) {
-    return false;
-  }
-  return true;
-}
-
-std::vector<base::ScopedFD> GenericV4L2Device::GetDmabufsForV4L2Buffer(
-    int index,
-    size_t num_planes,
-    enum v4l2_buf_type type) {
-  DCHECK(V4L2_TYPE_IS_MULTIPLANAR(type));
-
-  std::vector<base::ScopedFD> dmabuf_fds;
-  for (size_t i = 0; i < num_planes; ++i) {
-    struct v4l2_exportbuffer expbuf;
-    memset(&expbuf, 0, sizeof(expbuf));
-    expbuf.type = type;
-    expbuf.index = index;
-    expbuf.plane = i;
-    expbuf.flags = O_CLOEXEC;
-    if (Ioctl(VIDIOC_EXPBUF, &expbuf) != 0) {
-      dmabuf_fds.clear();
-      break;
-    }
-
-    dmabuf_fds.push_back(base::ScopedFD(expbuf.fd));
-  }
-
-  return dmabuf_fds;
-}
-
-bool GenericV4L2Device::CanCreateEGLImageFrom(uint32_t v4l2_pixfmt) {
-  static uint32_t kEGLImageDrmFmtsSupported[] = {
-    DRM_FORMAT_ARGB8888,
-#if defined(ARCH_CPU_ARMEL)
-    DRM_FORMAT_NV12,
-#endif
-  };
-
-  return std::find(
-      kEGLImageDrmFmtsSupported,
-      kEGLImageDrmFmtsSupported + arraysize(kEGLImageDrmFmtsSupported),
-      V4L2PixFmtToDrmFormat(v4l2_pixfmt)) !=
-      kEGLImageDrmFmtsSupported + arraysize(kEGLImageDrmFmtsSupported);
-}
-
-EGLImageKHR GenericV4L2Device::CreateEGLImage(
-    EGLDisplay egl_display,
-    EGLContext /* egl_context */,
-    GLuint texture_id,
-    const gfx::Size& size,
-    unsigned int buffer_index,
-    uint32_t v4l2_pixfmt,
-    const std::vector<base::ScopedFD>& dmabuf_fds) {
-  DVLOG(3) << "CreateEGLImage()";
-  if (!CanCreateEGLImageFrom(v4l2_pixfmt)) {
-    LOG(ERROR) << "Unsupported V4L2 pixel format";
-    return EGL_NO_IMAGE_KHR;
-  }
-
-  media::VideoPixelFormat vf_format = V4L2PixFmtToVideoPixelFormat(v4l2_pixfmt);
-  // Number of components, as opposed to the number of V4L2 planes, which is
-  // just a buffer count.
-  size_t num_planes = media::VideoFrame::NumPlanes(vf_format);
-  DCHECK_LE(num_planes, 3u);
-  if (num_planes < dmabuf_fds.size()) {
-    // It's possible for more than one DRM plane to reside in one V4L2 plane,
-    // but not the other way around. We must use all V4L2 planes.
-    LOG(ERROR) << "Invalid plane count";
-    return EGL_NO_IMAGE_KHR;
-  }
-
-  std::vector<EGLint> attrs;
-  attrs.push_back(EGL_WIDTH);
-  attrs.push_back(size.width());
-  attrs.push_back(EGL_HEIGHT);
-  attrs.push_back(size.height());
-  attrs.push_back(EGL_LINUX_DRM_FOURCC_EXT);
-  attrs.push_back(V4L2PixFmtToDrmFormat(v4l2_pixfmt));
-
-  // For existing formats, if we have less buffers (V4L2 planes) than
-  // components (planes), the remaining planes are stored in the last
-  // V4L2 plane. Use one V4L2 plane per each component until we run out of V4L2
-  // planes, and use the last V4L2 plane for all remaining components, each
-  // with an offset equal to the size of the preceding planes in the same
-  // V4L2 plane.
-  size_t v4l2_plane = 0;
-  size_t plane_offset = 0;
-  for (size_t plane = 0; plane < num_planes; ++plane) {
-    attrs.push_back(EGL_DMA_BUF_PLANE0_FD_EXT + plane * 3);
-    attrs.push_back(dmabuf_fds[v4l2_plane].get());
-    attrs.push_back(EGL_DMA_BUF_PLANE0_OFFSET_EXT + plane * 3);
-    attrs.push_back(plane_offset);
-    attrs.push_back(EGL_DMA_BUF_PLANE0_PITCH_EXT + plane * 3);
-    attrs.push_back(
-        media::VideoFrame::RowBytes(plane, vf_format, size.width()));
-
-    if (v4l2_plane + 1 < dmabuf_fds.size()) {
-      ++v4l2_plane;
-      plane_offset = 0;
-    } else {
-      plane_offset +=
-          media::VideoFrame::PlaneSize(vf_format, plane, size).GetArea();
-    }
-  }
-
-  attrs.push_back(EGL_NONE);
-
-  EGLImageKHR egl_image = eglCreateImageKHR(
-      egl_display, EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, &attrs[0]);
-  if (egl_image == EGL_NO_IMAGE_KHR) {
-    LOG(ERROR) << "Failed creating EGL image: " << ui::GetLastEGLErrorString();
-    return egl_image;
-  }
-  glBindTexture(GL_TEXTURE_EXTERNAL_OES, texture_id);
-  glEGLImageTargetTexture2DOES(GL_TEXTURE_EXTERNAL_OES, egl_image);
-
-  return egl_image;
-}
-
-EGLBoolean GenericV4L2Device::DestroyEGLImage(EGLDisplay egl_display,
-                                             EGLImageKHR egl_image) {
-  return eglDestroyImageKHR(egl_display, egl_image);
-}
-
-GLenum GenericV4L2Device::GetTextureTarget() { return GL_TEXTURE_EXTERNAL_OES; }
-
-uint32_t GenericV4L2Device::PreferredInputFormat() {
-  // TODO(posciak): We should support "dontcare" returns here once we
-  // implement proper handling (fallback, negotiation) for this in users.
-  CHECK_EQ(type_, kEncoder);
-  return V4L2_PIX_FMT_NV12M;
-}
-
-// static
-bool GenericV4L2Device::PostSandboxInitialization() {
-#if defined(USE_LIBV4L2)
-  StubPathMap paths;
-  paths[kModuleV4l2].push_back(kV4l2Lib);
-
-  return InitializeStubs(paths);
-#else
-  return true;
-#endif
-}
-
-}  //  namespace content