src/media/video/capture/android/video_capture_device_factory_android.cc

   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 "media/video/capture/android/video_capture_device_factory_android.h"
   6
   7 #include "base/android/jni_string.h"
   8 #include "base/android/scoped_java_ref.h"
   9 #include "base/strings/string_number_conversions.h"
  10 #include "base/strings/stringprintf.h"
  11 #include "jni/VideoCaptureFactory_jni.h"
  12 #include "media/video/capture/android/video_capture_device_android.h"
  13
  14 using base::android::AttachCurrentThread;
  15 using base::android::ScopedJavaLocalRef;
  16
  17 namespace media {
  18
  19 // static
  20 bool VideoCaptureDeviceFactoryAndroid::RegisterVideoCaptureDeviceFactory(
  21     JNIEnv* env) {
  22   return RegisterNativesImpl(env);
  23 }
  24
  25 //static
  26 ScopedJavaLocalRef<jobject>
  27 VideoCaptureDeviceFactoryAndroid::createVideoCaptureAndroid(
  28     int id,
  29     jlong nativeVideoCaptureDeviceAndroid) {
  30   return (Java_VideoCaptureFactory_createVideoCapture(
  31       AttachCurrentThread(),
  32       base::android::GetApplicationContext(),
  33       id,
  34       nativeVideoCaptureDeviceAndroid));
  35 }
  36
  37 scoped_ptr<VideoCaptureDevice> VideoCaptureDeviceFactoryAndroid::Create(
  38     const VideoCaptureDevice::Name& device_name) {
  39   DCHECK(thread_checker_.CalledOnValidThread());
  40   int id;
  41   if (!base::StringToInt(device_name.id(), &id))
  42     return scoped_ptr<VideoCaptureDevice>();
  43
  44   VideoCaptureDeviceAndroid* video_capture_device(
  45       new VideoCaptureDeviceAndroid(device_name));
  46
  47   if (video_capture_device->Init())
  48     return scoped_ptr<VideoCaptureDevice>(video_capture_device);
  49
  50   DLOG(ERROR) << "Error creating Video Capture Device.";
  51   return scoped_ptr<VideoCaptureDevice>();
  52 }
  53
  54 void VideoCaptureDeviceFactoryAndroid::GetDeviceNames(
  55     VideoCaptureDevice::Names* device_names) {
  56   DCHECK(thread_checker_.CalledOnValidThread());
  57   device_names->clear();
  58
  59   JNIEnv* env = AttachCurrentThread();
  60
  61   int num_cameras = Java_ChromiumCameraInfo_getNumberOfCameras(
  62       env, base::android::GetApplicationContext());
  63   DVLOG(1) << "VideoCaptureDevice::GetDeviceNames: num_cameras=" << num_cameras;
  64   if (num_cameras <= 0)
  65     return;
  66
  67   for (int camera_id = num_cameras - 1; camera_id >= 0; --camera_id) {
  68     ScopedJavaLocalRef<jobject> ci =
  69         Java_ChromiumCameraInfo_getAt(env, camera_id);
  70
  71     VideoCaptureDevice::Name name(
  72         base::android::ConvertJavaStringToUTF8(
  73             Java_ChromiumCameraInfo_getDeviceName(env, ci.obj())),
  74         base::StringPrintf("%d", Java_ChromiumCameraInfo_getId(env, ci.obj())));
  75     device_names->push_back(name);
  76
  77     DVLOG(1) << "VideoCaptureDeviceFactoryAndroid::GetDeviceNames: camera"
  78              << "device_name=" << name.name() << ", unique_id=" << name.id()
  79              << ", orientation "
  80              << Java_ChromiumCameraInfo_getOrientation(env, ci.obj());
  81   }
  82 }
  83
  84 void VideoCaptureDeviceFactoryAndroid::GetDeviceSupportedFormats(
  85     const VideoCaptureDevice::Name& device,
  86     VideoCaptureFormats* capture_formats) {
  87   DCHECK(thread_checker_.CalledOnValidThread());
  88   int id;
  89   if (!base::StringToInt(device.id(), &id))
  90     return;
  91   JNIEnv* env = AttachCurrentThread();
  92   base::android::ScopedJavaLocalRef<jobjectArray> collected_formats =
  93       Java_VideoCaptureFactory_getDeviceSupportedFormats(env, id);
  94   if (collected_formats.is_null())
  95     return;
  96
  97   jsize num_formats = env->GetArrayLength(collected_formats.obj());
  98   for (int i = 0; i < num_formats; ++i) {
  99     base::android::ScopedJavaLocalRef<jobject> format(
 100         env, env->GetObjectArrayElement(collected_formats.obj(), i));
 101
 102     VideoPixelFormat pixel_format = media::PIXEL_FORMAT_UNKNOWN;
 103     switch (media::Java_VideoCaptureFactory_getCaptureFormatPixelFormat(
 104         env, format.obj())) {
 105       case ANDROID_IMAGEFORMAT_YV12:
 106         pixel_format = media::PIXEL_FORMAT_YV12;
 107         break;
 108       case ANDROID_IMAGEFORMAT_NV21:
 109         pixel_format = media::PIXEL_FORMAT_NV21;
 110         break;
 111       default:
 112         break;
 113     }
 114     VideoCaptureFormat capture_format(
 115         gfx::Size(media::Java_VideoCaptureFactory_getCaptureFormatWidth(env,
 116                       format.obj()),
 117                   media::Java_VideoCaptureFactory_getCaptureFormatHeight(env,
 118                       format.obj())),
 119         media::Java_VideoCaptureFactory_getCaptureFormatFramerate(env,
 120                                                                   format.obj()),
 121         pixel_format);
 122     capture_formats->push_back(capture_format);
 123     DVLOG(1) << device.name() << " " << capture_format.ToString();
 124   }
 125 }
 126
 127 }  // namespace media