src/starboard/android/shared/media_is_video_supported.cc

// Copyright 2017 The Cobalt Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "starboard/shared/starboard/media/media_support_internal.h"

#include "starboard/android/shared/jni_env_ext.h"
#include "starboard/android/shared/jni_utils.h"
#include "starboard/android/shared/media_common.h"
#include "starboard/configuration.h"
#include "starboard/media.h"

using starboard::android::shared::JniEnvExt;
using starboard::android::shared::ScopedLocalJavaRef;
using starboard::android::shared::SupportedVideoCodecToMimeType;

namespace {

// https://developer.android.com/reference/android/view/Display.HdrCapabilities.html#HDR_TYPE_HDR10
const jint HDR_TYPE_DOLBY_VISION = 1;
const jint HDR_TYPE_HDR10 = 2;
const jint HDR_TYPE_HLG = 3;

bool IsTransferCharacteristicsSupported(SbMediaTransferId transfer_id) {
  // Bt709 and unspecified are assumed to always be supported.
  if (transfer_id == kSbMediaTransferIdBt709 ||
      transfer_id == kSbMediaTransferIdUnspecified) {
    return true;
  }
  // An HDR capable VP9 decoder is needed to handle HDR at all.
  bool has_hdr_capable_vp9_decoder =
      JniEnvExt::Get()->CallStaticBooleanMethodOrAbort(
          "dev/cobalt/media/MediaCodecUtil", "hasHdrCapableVp9Decoder",
          "()Z") == JNI_TRUE;
  if (!has_hdr_capable_vp9_decoder) {
    return false;
  }

  jint hdr_type;
  if (transfer_id == kSbMediaTransferIdSmpteSt2084) {
    hdr_type = HDR_TYPE_HDR10;
  } else if (transfer_id == kSbMediaTransferIdAribStdB67) {
    hdr_type = HDR_TYPE_HLG;
  } else {
    // No other transfer functions are supported, see
    // https://source.android.com/devices/tech/display/hdr.
    return false;
  }

  return JniEnvExt::Get()->CallStarboardBooleanMethodOrAbort(
             "isHdrTypeSupported", "(I)Z", hdr_type) == JNI_TRUE;
}

}  // namespace

SB_EXPORT bool SbMediaIsVideoSupported(SbMediaVideoCodec video_codec,
                                       int frame_width,
                                       int frame_height,
                                       int64_t bitrate,
                                       int fps,
                                       bool decode_to_texture_required,
                                       SbMediaTransferId eotf) {
  if (!IsTransferCharacteristicsSupported(eotf)) {
    return false;
  }
  // While not necessarily true, for now we assume that all Android devices
  // can play decode-to-texture video just as well as normal video.
  SB_UNREFERENCED_PARAMETER(decode_to_texture_required);

  const char* mime = SupportedVideoCodecToMimeType(video_codec);
  if (!mime) {
    return false;
  }
  JniEnvExt* env = JniEnvExt::Get();
  ScopedLocalJavaRef<jstring> j_mime(env->NewStringStandardUTFOrAbort(mime));
  bool must_support_hdr = (eotf != kSbMediaTransferIdBt709 &&
                           eotf != kSbMediaTransferIdUnspecified);
  return env->CallStaticBooleanMethodOrAbort(
             "dev/cobalt/media/MediaCodecUtil", "hasVideoDecoderFor",
             "(Ljava/lang/String;ZIIIIZ)Z", j_mime.Get(), false, frame_width,
             frame_height, static_cast<jint>(bitrate), fps,
             must_support_hdr) == JNI_TRUE;
}