/*
 *  Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 *
 */

#import <Foundation/Foundation.h>

#import "RTCNativeVideoEncoder.h"
#import "RTCNativeVideoEncoderBuilder+Native.h"
#import "RTCVideoEncoderVP8.h"
#import "api/peerconnection/RTCVideoCodecInfo+Private.h"
#import "helpers/NSString+StdString.h"
#import "sdk/objc/base/RTCMacros.h"

#include "api/video_codecs/scalability_mode.h"
#include "api/video_codecs/sdp_video_format.h"
#include "modules/video_coding/codecs/vp8/include/vp8.h"
#include "modules/video_coding/codecs/vp8/vp8_scalability.h"

@interface RTC_OBJC_TYPE (RTCVideoEncoderVP8Builder)
    : RTC_OBJC_TYPE(RTCNativeVideoEncoder) <RTC_OBJC_TYPE (RTCNativeVideoEncoderBuilder)>
@end

    @implementation RTC_OBJC_TYPE (RTCVideoEncoderVP8Builder)

    - (std::unique_ptr<webrtc::VideoEncoder>)build:
        (const webrtc::Environment&)env {
      return webrtc::CreateVp8Encoder(env);
    }

    - (std::unique_ptr<webrtc::VideoEncoder>)
        buildWithEnvironment:(const webrtc::Environment&)env
                      format:(const webrtc::SdpVideoFormat&)format {
      return webrtc::CreateVp8Encoder(env);
    }

    @end

    @implementation RTC_OBJC_TYPE (RTCVideoEncoderVP8)

    + (id<RTC_OBJC_TYPE(RTCVideoEncoder)>)vp8Encoder {
      return [[RTC_OBJC_TYPE(RTCVideoEncoderVP8Builder) alloc] init];
    }

    + (NSArray<NSString*>*)supportedScalabilityModes {
      NSMutableArray<NSString*>* result = [NSMutableArray
          arrayWithCapacity:std::size(webrtc::kVP8SupportedScalabilityModes)];
      for (webrtc::ScalabilityMode mode :
           webrtc::kVP8SupportedScalabilityModes) {
        [result addObject:[NSString stringForAbslStringView:
                                        webrtc::ScalabilityModeToString(mode)]];
      }
      return result;
    }

    + (NSArray<RTC_OBJC_TYPE(RTCVideoCodecInfo) *>*)supportedCodecs {
      webrtc::SdpVideoFormat format = webrtc::SdpVideoFormat::VP8();
      for (const auto& mode : webrtc::kVP8SupportedScalabilityModes) {
        format.scalability_modes.push_back(mode);
      }
      return @[ [[RTC_OBJC_TYPE(RTCVideoCodecInfo) alloc]
          initWithNativeSdpVideoFormat:format] ];
    }

    @end