// 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/player/filter/player_components.h"

#include "starboard/common/log.h"
#include "starboard/common/ref_counted.h"
#include "starboard/common/scoped_ptr.h"
#include "starboard/format_string.h"
#if SB_API_VERSION >= 11
#include "starboard/gles.h"
#endif  // SB_API_VERSION >= 11
#include "starboard/media.h"
#include "starboard/shared/ffmpeg/ffmpeg_audio_decoder.h"
#include "starboard/shared/ffmpeg/ffmpeg_video_decoder.h"
#include "starboard/shared/libaom/aom_video_decoder.h"
#include "starboard/shared/libde265/de265_video_decoder.h"
#include "starboard/shared/libvpx/vpx_video_decoder.h"
#include "starboard/shared/opus/opus_audio_decoder.h"
#include "starboard/shared/starboard/player/filter/adaptive_audio_decoder_internal.h"
#include "starboard/shared/starboard/player/filter/audio_decoder_internal.h"
#include "starboard/shared/starboard/player/filter/audio_renderer_sink.h"
#include "starboard/shared/starboard/player/filter/audio_renderer_sink_impl.h"
#include "starboard/shared/starboard/player/filter/punchout_video_renderer_sink.h"
#include "starboard/shared/starboard/player/filter/video_decoder_internal.h"
#include "starboard/shared/starboard/player/filter/video_render_algorithm.h"
#include "starboard/shared/starboard/player/filter/video_render_algorithm_impl.h"
#include "starboard/shared/starboard/player/filter/video_renderer_sink.h"

namespace starboard {
namespace shared {
namespace starboard {
namespace player {
namespace filter {

namespace {

class PlayerComponentsImpl : public PlayerComponents {
 public:
  bool CreateAudioComponents(const AudioParameters& audio_parameters,
                             scoped_ptr<AudioDecoder>* audio_decoder,
                             scoped_ptr<AudioRendererSink>* audio_renderer_sink,
                             std::string* error_message) override {
    SB_DCHECK(audio_decoder);
    SB_DCHECK(audio_renderer_sink);
    SB_DCHECK(error_message);

    typedef ::starboard::shared::ffmpeg::AudioDecoder FfmpegAudioDecoder;
    typedef ::starboard::shared::opus::OpusAudioDecoder OpusAudioDecoder;

#if SB_API_VERSION >= 11
    auto decoder_creator = [](const SbMediaAudioSampleInfo& audio_sample_info,
                              SbDrmSystem drm_system) {
      if (audio_sample_info.codec == kSbMediaAudioCodecOpus) {
        scoped_ptr<OpusAudioDecoder> audio_decoder_impl(
            new OpusAudioDecoder(audio_sample_info));
        if (audio_decoder_impl->is_valid()) {
          return audio_decoder_impl.PassAs<AudioDecoder>();
        }
      } else {
        scoped_ptr<FfmpegAudioDecoder> audio_decoder_impl(
            FfmpegAudioDecoder::Create(audio_sample_info.codec,
                                       audio_sample_info));
        if (audio_decoder_impl && audio_decoder_impl->is_valid()) {
          return audio_decoder_impl.PassAs<AudioDecoder>();
        }
      }
      return scoped_ptr<AudioDecoder>();
    };

    audio_decoder->reset(
        new AdaptiveAudioDecoder(audio_parameters.audio_sample_info,
                                 audio_parameters.drm_system, decoder_creator));
#else   // SB_API_VERSION >= 11
    if (audio_parameters.audio_codec == kSbMediaAudioCodecOpus) {
      scoped_ptr<OpusAudioDecoder> audio_decoder_impl(
          new OpusAudioDecoder(audio_parameters.audio_sample_info));
      if (audio_decoder_impl && audio_decoder_impl->is_valid()) {
        audio_decoder->reset(audio_decoder_impl.release());
      } else {
        audio_decoder->reset();
        SB_LOG(ERROR) << "Failed to create Opus audio decoder.";
        *error_message = "Failed to create Opus audio decoder.";
        return false;
      }
    } else {
      scoped_ptr<FfmpegAudioDecoder> audio_decoder_impl(
          FfmpegAudioDecoder::Create(audio_parameters.audio_codec,
                                     audio_parameters.audio_sample_info));
      if (audio_decoder_impl && audio_decoder_impl->is_valid()) {
        audio_decoder->reset(audio_decoder_impl.release());
      } else {
        audio_decoder->reset();
        SB_LOG(ERROR) << "Failed to create audio decoder for codec "
                      << audio_parameters.audio_codec;
        *error_message =
            FormatString("Failed to create audio decoder for codec %d.",
                         audio_parameters.audio_codec);
        return false;
      }
    }
#endif  // SB_API_VERSION >= 11
    audio_renderer_sink->reset(new AudioRendererSinkImpl);

    return true;
  }

  bool CreateVideoComponents(
      const VideoParameters& video_parameters,
      scoped_ptr<VideoDecoder>* video_decoder,
      scoped_ptr<VideoRenderAlgorithm>* video_render_algorithm,
      scoped_refptr<VideoRendererSink>* video_renderer_sink,
      std::string* error_message) override {
    typedef ::starboard::shared::aom::VideoDecoder Av1VideoDecoderImpl;
    typedef ::starboard::shared::de265::VideoDecoder H265VideoDecoderImpl;
    typedef ::starboard::shared::ffmpeg::VideoDecoder FfmpegVideoDecoderImpl;
    typedef ::starboard::shared::vpx::VideoDecoder VpxVideoDecoderImpl;

    const SbTime kVideoSinkRenderInterval = 10 * kSbTimeMillisecond;

    SB_DCHECK(video_decoder);
    SB_DCHECK(video_render_algorithm);
    SB_DCHECK(video_renderer_sink);
    SB_DCHECK(error_message);

    video_decoder->reset();

#if SB_API_VERSION < 11
    const SbMediaVideoCodec kAv1VideoCodec = kSbMediaVideoCodecVp10;
#else   // SB_API_VERSION < 11
    const SbMediaVideoCodec kAv1VideoCodec = kSbMediaVideoCodecAv1;
#endif  // SB_API_VERSION < 11

    if (video_parameters.video_codec == kSbMediaVideoCodecVp9) {
      video_decoder->reset(new VpxVideoDecoderImpl(
          video_parameters.video_codec, video_parameters.output_mode,
          video_parameters.decode_target_graphics_context_provider));
    } else if (video_parameters.video_codec == kAv1VideoCodec) {
      video_decoder->reset(new Av1VideoDecoderImpl(
          video_parameters.video_codec, video_parameters.output_mode,
          video_parameters.decode_target_graphics_context_provider));
    } else if (video_parameters.video_codec == kSbMediaVideoCodecH265) {
      video_decoder->reset(new H265VideoDecoderImpl(
          video_parameters.video_codec, video_parameters.output_mode,
          video_parameters.decode_target_graphics_context_provider));
    } else {
      scoped_ptr<FfmpegVideoDecoderImpl> ffmpeg_video_decoder(
          FfmpegVideoDecoderImpl::Create(
              video_parameters.video_codec, video_parameters.output_mode,
              video_parameters.decode_target_graphics_context_provider));
      if (ffmpeg_video_decoder && ffmpeg_video_decoder->is_valid()) {
        video_decoder->reset(ffmpeg_video_decoder.release());
      } else {
        SB_LOG(ERROR) << "Failed to create video decoder for codec "
                      << video_parameters.video_codec;
        *error_message =
            FormatString("Failed to create video decoder for codec %d.",
                         video_parameters.video_codec);
        return false;
      }
    }

    video_render_algorithm->reset(new VideoRenderAlgorithmImpl([]() {
      return 60.;  // default refresh rate
    }));
    if (video_parameters.output_mode == kSbPlayerOutputModeDecodeToTexture) {
      *video_renderer_sink = NULL;
    } else {
      *video_renderer_sink = new PunchoutVideoRendererSink(
          video_parameters.player, kVideoSinkRenderInterval);
    }

    return true;
  }
};

}  // namespace

// static
scoped_ptr<PlayerComponents> PlayerComponents::Create() {
  return make_scoped_ptr<PlayerComponents>(new PlayerComponentsImpl);
}

// static
bool VideoDecoder::OutputModeSupported(SbPlayerOutputMode output_mode,
                                       SbMediaVideoCodec codec,
                                       SbDrmSystem drm_system) {
  SB_UNREFERENCED_PARAMETER(codec);
  SB_UNREFERENCED_PARAMETER(drm_system);

  bool has_gles_support = false;

#if SB_API_VERSION >= 11
  has_gles_support = SbGetGlesInterface();
#elif SB_HAS(GLES2)
  has_gles_support = true;
#endif

  if (!has_gles_support) {
    return output_mode == kSbPlayerOutputModePunchOut;
  }

#if defined(SB_FORCE_DECODE_TO_TEXTURE_ONLY)
  // Starboard lib targets may not draw directly to the window, so punch through
  // video is not made available.
  return output_mode == kSbPlayerOutputModeDecodeToTexture;
#endif  // defined(SB_FORCE_DECODE_TO_TEXTURE_ONLY)

  if (output_mode == kSbPlayerOutputModePunchOut ||
      output_mode == kSbPlayerOutputModeDecodeToTexture) {
    return true;
  }

  return false;
}

}  // namespace filter
}  // namespace player
}  // namespace starboard
}  // namespace shared
}  // namespace starboard