Generalize V4L2 HW video codec device names

content/common/gpu/media/generic_v4l2_video_device.cc

 // 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 <fcntl.h>
 #include <libdrm/drm_fourcc.h>
 #include <linux/videodev2.h>
 #include <poll.h>
 #include <sys/eventfd.h>
 #include <sys/ioctl.h>
 #include <sys/mman.h>
 
 #include "base/debug/trace_event.h"
 #include "base/files/scoped_file.h"
 #include "base/posix/eintr_wrapper.h"
-#include "content/common/gpu/media/exynos_v4l2_video_device.h"
+#include "content/common/gpu/media/generic_v4l2_video_device.h"
 #include "ui/gl/gl_bindings.h"
 
 namespace content {
 
 namespace {
-const char kDecoderDevice[] = "/dev/mfc-dec";
-const char kEncoderDevice[] = "/dev/mfc-enc";
+const char kDecoderDevice[] = "/dev/video-dec";
+const char kEncoderDevice[] = "/dev/video-enc";
 const char kImageProcessorDevice[] = "/dev/gsc1";
 }
 
-ExynosV4L2Device::ExynosV4L2Device(Type type)
+GenericV4L2Device::GenericV4L2Device(Type type)
     : type_(type),
       device_fd_(-1),
       device_poll_interrupt_fd_(-1) {}
 
-ExynosV4L2Device::~ExynosV4L2Device() {
+GenericV4L2Device::~GenericV4L2Device() {
   if (device_poll_interrupt_fd_ != -1) {
     close(device_poll_interrupt_fd_);
     device_poll_interrupt_fd_ = -1;
   }
   if (device_fd_ != -1) {
     close(device_fd_);
     device_fd_ = -1;
   }
 }
 
-int ExynosV4L2Device::Ioctl(int request, void* arg) {
+int GenericV4L2Device::Ioctl(int request, void* arg) {
   return HANDLE_EINTR(ioctl(device_fd_, request, arg));
 }
 
-bool ExynosV4L2Device::Poll(bool poll_device, bool* event_pending) {
+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_;
   pollfds[0].events = POLLIN | POLLERR;
   nfds = 1;
 
   if (poll_device) {
     DVLOG(3) << "Poll(): adding device fd to poll() set";
     pollfds[nfds].fd = device_fd_;
     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* ExynosV4L2Device::Mmap(void* addr,
+void* GenericV4L2Device::Mmap(void* addr,
                              unsigned int len,
                              int prot,
                              int flags,
                              unsigned int offset) {
   return mmap(addr, len, prot, flags, device_fd_, offset);
 }
 
-void ExynosV4L2Device::Munmap(void* addr, unsigned int len) {
+void GenericV4L2Device::Munmap(void* addr, unsigned int len) {
   munmap(addr, len);
 }
 
-bool ExynosV4L2Device::SetDevicePollInterrupt() {
+bool GenericV4L2Device::SetDevicePollInterrupt() {
   DVLOG(3) << "SetDevicePollInterrupt()";
 
   const uint64 buf = 1;
   if (HANDLE_EINTR(write(device_poll_interrupt_fd_, &buf, sizeof(buf))) == -1) {
     DPLOG(ERROR) << "SetDevicePollInterrupt(): write() failed";
     return false;
   }
   return true;
 }
 
-bool ExynosV4L2Device::ClearDevicePollInterrupt() {
+bool GenericV4L2Device::ClearDevicePollInterrupt() {
   DVLOG(3) << "ClearDevicePollInterrupt()";
 
   uint64 buf;
   if (HANDLE_EINTR(read(device_poll_interrupt_fd_, &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 ExynosV4L2Device::Initialize() {
+bool GenericV4L2Device::Initialize() {
   const char* device_path = NULL;
   switch (type_) {
     case kDecoder:
       device_path = kDecoderDevice;
       break;
     case kEncoder:
       device_path = kEncoderDevice;
       break;
     case kImageProcessor:
       device_path = kImageProcessorDevice;
       break;
   }
 
   DVLOG(2) << "Initialize(): opening device: " << device_path;
   // Open the video device.
   device_fd_ = HANDLE_EINTR(open(device_path, O_RDWR | O_NONBLOCK | O_CLOEXEC));
   if (device_fd_ == -1) {
     return false;
   }
 
   device_poll_interrupt_fd_ = eventfd(0, EFD_NONBLOCK | EFD_CLOEXEC);
   if (device_poll_interrupt_fd_ == -1) {
     return false;
   }
   return true;
 }
 
-EGLImageKHR ExynosV4L2Device::CreateEGLImage(EGLDisplay egl_display,
+EGLImageKHR GenericV4L2Device::CreateEGLImage(EGLDisplay egl_display,
                                              EGLContext /* egl_context */,
                                              GLuint texture_id,
                                              gfx::Size frame_buffer_size,
                                              unsigned int buffer_index,
                                              size_t planes_count) {
   DVLOG(3) << "CreateEGLImage()";
 
   scoped_ptr<base::ScopedFD[]> dmabuf_fds(new base::ScopedFD[planes_count]);
   for (size_t i = 0; i < planes_count; ++i) {
     // Export the DMABUF fd so we can export it as a texture.
@@ skipping 29 matching lines @@
       egl_display, EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, attrs);
   if (egl_image == EGL_NO_IMAGE_KHR) {
     return egl_image;
   }
   glBindTexture(GL_TEXTURE_EXTERNAL_OES, texture_id);
   glEGLImageTargetTexture2DOES(GL_TEXTURE_EXTERNAL_OES, egl_image);
 
   return egl_image;
 }
 
-EGLBoolean ExynosV4L2Device::DestroyEGLImage(EGLDisplay egl_display,
+EGLBoolean GenericV4L2Device::DestroyEGLImage(EGLDisplay egl_display,
                                              EGLImageKHR egl_image) {
   return eglDestroyImageKHR(egl_display, egl_image);
 }
 
-GLenum ExynosV4L2Device::GetTextureTarget() { return GL_TEXTURE_EXTERNAL_OES; }
+GLenum GenericV4L2Device::GetTextureTarget() { return GL_TEXTURE_EXTERNAL_OES; }
 
-uint32 ExynosV4L2Device::PreferredInputFormat() {
+uint32 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;
 }
 
-uint32 ExynosV4L2Device::PreferredOutputFormat() {
+uint32 GenericV4L2Device::PreferredOutputFormat() {
   // TODO(posciak): We should support "dontcare" returns here once we
   // implement proper handling (fallback, negotiation) for this in users.
   CHECK_EQ(type_, kDecoder);
   return V4L2_PIX_FMT_NV12M;
 }
 
 }  //  namespace content