src/starboard/tizen/shared/audio/audio_sink_adaptor.cc

// Copyright (c) 2016 Samsung Electronics Co., Ltd 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/audio_sink.h"
#include "starboard/log.h"
#include "starboard/tizen/shared/audio/audio_sink_private.h"

bool SbAudioSinkIsValid(SbAudioSink audio_sink) {
  if (audio_sink == kSbAudioSinkInvalid) {
    return false;
  }
  return audio_sink->IsValid();
}

SbAudioSink SbAudioSinkCreate(
    int channels,
    int sampling_frequency_hz,
    SbMediaAudioSampleType audio_sample_type,
    SbMediaAudioFrameStorageType audio_frame_storage_type,
    SbAudioSinkFrameBuffers frame_buffers,
    int frames_per_channel,
    SbAudioSinkUpdateSourceStatusFunc update_source_status_func,
    SbAudioSinkConsumeFramesFunc consume_frames_func,
    void* context) {
  if (channels <= 0 || channels > SbAudioSinkGetMaxChannels()) {
    SB_LOG(WARNING) << "Invalid audio channels " << channels;
    return kSbAudioSinkInvalid;
  }

  if (sampling_frequency_hz <= 0) {
    SB_LOG(WARNING) << "Invalid audio sampling frequency "
                    << sampling_frequency_hz;
    return kSbAudioSinkInvalid;
  }

  if (!SbAudioSinkIsAudioSampleTypeSupported(audio_sample_type)) {
    SB_LOG(WARNING) << "Invalid audio sample type " << audio_sample_type;
    return kSbAudioSinkInvalid;
  }

  if (!SbAudioSinkIsAudioFrameStorageTypeSupported(audio_frame_storage_type)) {
    SB_LOG(WARNING) << "Invalid audio frame storage type "
                    << audio_frame_storage_type;
    return kSbAudioSinkInvalid;
  }

  if (frame_buffers == NULL) {
    SB_LOG(WARNING) << "Pointer to frame buffers cannot be NULL";
    return kSbAudioSinkInvalid;
  }

  if (frames_per_channel <= 0) {
    SB_LOG(WARNING) << "Invalid frame buffer size " << frames_per_channel;
    return kSbAudioSinkInvalid;
  }

  if (update_source_status_func == NULL) {
    SB_LOG(WARNING) << "update_source_status_func cannot be NULL";
    return kSbAudioSinkInvalid;
  }

  if (consume_frames_func == NULL) {
    SB_LOG(WARNING) << "consume_frames_func cannot be NULL";
    return kSbAudioSinkInvalid;
  }

  SbAudioSink audio_sink = new SbAudioSinkPrivate(
      channels, sampling_frequency_hz, audio_sample_type,
      audio_frame_storage_type, frame_buffers, frames_per_channel,
      update_source_status_func, consume_frames_func, context);
  if (!SbAudioSinkIsValid(audio_sink)) {
    if (audio_sink) {
      delete audio_sink;
    }
    return kSbAudioSinkInvalid;
  }
  return audio_sink;
}

void SbAudioSinkDestroy(SbAudioSink audio_sink) {
  if (audio_sink) {
    delete audio_sink;
  }
  SB_LOG(WARNING) << "Invalid audio sink.";
}

int SbAudioSinkGetMaxChannels() {
  return 2;
}

int SbAudioSinkGetNearestSupportedSampleFrequency(int sampling_frequency_hz) {
  if (sampling_frequency_hz <= 0) {
    SB_LOG(ERROR) << "Invalid audio sampling frequency "
                  << sampling_frequency_hz;
    return 1;
  }
  return sampling_frequency_hz;
}

bool SbAudioSinkIsAudioSampleTypeSupported(
    SbMediaAudioSampleType audio_sample_type) {
  return audio_sample_type == kSbMediaAudioSampleTypeInt16;
}

bool SbAudioSinkIsAudioFrameStorageTypeSupported(
    SbMediaAudioFrameStorageType audio_frame_storage_type) {
  return audio_frame_storage_type == kSbMediaAudioFrameStorageTypeInterleaved;
}