gpu/config/gpu_info_collector_android.cc

// Copyright (c) 2012 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 "gpu/config/gpu_info_collector.h"

#include <stddef.h>

#include "base/android/build_info.h"
#include "base/android/jni_android.h"
#include "base/logging.h"
#include "base/strings/string_split.h"

namespace {

std::pair<std::string, size_t> GetVersionFromString(
    const std::string& version_string,
    size_t begin = 0) {
  begin = version_string.find_first_of("0123456789", begin);
  if (begin == std::string::npos)
    return std::make_pair("", std::string::npos);

  size_t end = version_string.find_first_not_of("01234567890.", begin);
  std::string sub_string;
  if (end != std::string::npos)
    sub_string = version_string.substr(begin, end - begin);
  else
    sub_string = version_string.substr(begin);
  std::vector<std::string> pieces = base::SplitString(
      sub_string, ".", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
  if (pieces.size() >= 2)
    return std::make_pair(pieces[0] + "." + pieces[1], end);
  else
    return std::make_pair("", end);
}

std::string GetDriverVersionFromString(const std::string& version_string) {
  // We expect that android GL_VERSION strings will be of a form
  // similar to: "OpenGL ES 2.0 V@6.0 AU@ (CL@2946718)" where the
  // first match to [0-9][0-9.]* is the OpenGL ES version number, and
  // the second match to [0-9][0-9.]* is the driver version (in this
  // case, 6.0).
  // It is currently assumed that the driver version has at least one
  // period in it, and only the first two components are significant.
  size_t begin = GetVersionFromString(version_string).second;
  if (begin == std::string::npos)
    return "0";

  std::pair<std::string, size_t> driver_version =
      GetVersionFromString(version_string, begin);
  if (driver_version.first == "")
    return "0";

  return driver_version.first;
}

}

namespace gpu {

bool CollectContextGraphicsInfo(GPUInfo* gpu_info) {
  // When command buffer is compiled as a standalone library, the process might
  // not have a Java environment.
  if (base::android::IsVMInitialized()) {
    gpu_info->machine_model_name =
        base::android::BuildInfo::GetInstance()->model();
  }

  // At this point GL bindings have been initialized already.
  return CollectGraphicsInfoGL(gpu_info);
}

bool CollectBasicGraphicsInfo(GPUInfo* gpu_info) {
  NOTREACHED();
  return false;
}

void CollectDriverInfoGL(GPUInfo* gpu_info) {
  gpu_info->driver_version = GetDriverVersionFromString(
      gpu_info->gl_version);
  gpu_info->gpu.vendor_string = gpu_info->gl_vendor;
  gpu_info->gpu.device_string = gpu_info->gl_renderer;
}

}  // namespace gpu