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
  13 using base::android::AttachCurrentThread;
  14 using base::android::ScopedJavaLocalRef;
  15
  16 namespace media {
  17
  18 // static
  19 void VideoCaptureDeviceFactoryAndroid::GetDeviceNames(
  20     VideoCaptureDevice::Names* device_names) {
  21   device_names->clear();
  22
  23   JNIEnv* env = AttachCurrentThread();
  24
  25   int num_cameras = Java_ChromiumCameraInfo_getNumberOfCameras(
  26       env, base::android::GetApplicationContext());
  27   DVLOG(1) << "VideoCaptureDevice::GetDeviceNames: num_cameras=" << num_cameras;
  28   if (num_cameras <= 0)
  29     return;
  30
  31   for (int camera_id = num_cameras - 1; camera_id >= 0; --camera_id) {
  32     ScopedJavaLocalRef<jobject> ci =
  33         Java_ChromiumCameraInfo_getAt(env, camera_id);
  34
  35     VideoCaptureDevice::Name name(
  36         base::android::ConvertJavaStringToUTF8(
  37             Java_ChromiumCameraInfo_getDeviceName(env, ci.obj())),
  38         base::StringPrintf("%d", Java_ChromiumCameraInfo_getId(env, ci.obj())));
  39     device_names->push_back(name);
  40
  41     DVLOG(1) << "VideoCaptureDeviceFactoryAndroid::GetDeviceNames: camera"
  42              << "device_name=" << name.name() << ", unique_id=" << name.id()
  43              << ", orientation "
  44              << Java_ChromiumCameraInfo_getOrientation(env, ci.obj());
  45   }
  46 }
  47
  48 // static
  49 void VideoCaptureDeviceFactoryAndroid::GetDeviceSupportedFormats(
  50     const VideoCaptureDevice::Name& device,
  51     VideoCaptureFormats* capture_formats) {
  52   int id;
  53   if (!base::StringToInt(device.id(), &id))
  54     return;
  55   JNIEnv* env = AttachCurrentThread();
  56   base::android::ScopedJavaLocalRef<jobjectArray> collected_formats =
  57       Java_VideoCaptureFactory_getDeviceSupportedFormats(env, id);
  58   if (collected_formats.is_null())
  59     return;
  60
  61   jsize num_formats = env->GetArrayLength(collected_formats.obj());
  62   for (int i = 0; i < num_formats; ++i) {
  63     base::android::ScopedJavaLocalRef<jobject> format(
  64         env, env->GetObjectArrayElement(collected_formats.obj(), i));
  65
  66     VideoPixelFormat pixel_format = media::PIXEL_FORMAT_UNKNOWN;
  67     switch (media::Java_VideoCaptureFactory_getCaptureFormatPixelFormat(
  68         env, format.obj())) {
  69       case ANDROID_IMAGEFORMAT_YV12:
  70         pixel_format = media::PIXEL_FORMAT_YV12;
  71         break;
  72       case ANDROID_IMAGEFORMAT_NV21:
  73         pixel_format = media::PIXEL_FORMAT_NV21;
  74         break;
  75       default:
  76         break;
  77     }
  78     VideoCaptureFormat capture_format(
  79         gfx::Size(media::Java_VideoCaptureFactory_getCaptureFormatWidth(env,
  80                       format.obj()),
  81                   media::Java_VideoCaptureFactory_getCaptureFormatHeight(env,
  82                       format.obj())),
  83         media::Java_VideoCaptureFactory_getCaptureFormatFramerate(env,
  84                                                                   format.obj()),
  85         pixel_format);
  86     capture_formats->push_back(capture_format);
  87     DVLOG(1) << device.name() << " resolution: "
  88         << capture_format.frame_size.ToString() << ", fps: "
  89         << capture_format.frame_rate << ", pixel format: "
  90         << capture_format.pixel_format;
  91   }
  92 }
  93
  94 //static
  95 ScopedJavaLocalRef<jobject>
  96 VideoCaptureDeviceFactoryAndroid::createVideoCaptureAndroid(
  97     int id,
  98     jlong nativeVideoCaptureDeviceAndroid) {
  99   return (Java_VideoCaptureFactory_createVideoCapture(
 100       AttachCurrentThread(),
 101       base::android::GetApplicationContext(),
 102       id,
 103       nativeVideoCaptureDeviceAndroid));
 104 }
 105
 106 // static
 107 bool VideoCaptureDeviceFactoryAndroid::RegisterVideoCaptureDeviceFactory(
 108     JNIEnv* env) {
 109   return RegisterNativesImpl(env);
 110 }
 111
 112 }  // namespace media