// Copyright 2017 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include <intel-hda/utils/codec-caps.h>

namespace audio {
namespace intel_hda {

bool SampleCaps::SupportsRate(uint32_t rate) const {
  switch (rate) {
    case 384000:
      return ((pcm_size_rate_ & IHDA_PCM_RATE_384000) != 0);
    case 192000:
      return ((pcm_size_rate_ & IHDA_PCM_RATE_192000) != 0);
    case 176400:
      return ((pcm_size_rate_ & IHDA_PCM_RATE_176400) != 0);
    case 96000:
      return ((pcm_size_rate_ & IHDA_PCM_RATE_96000) != 0);
    case 88200:
      return ((pcm_size_rate_ & IHDA_PCM_RATE_88200) != 0);
    case 48000:
      return ((pcm_size_rate_ & IHDA_PCM_RATE_48000) != 0);
    case 44100:
      return ((pcm_size_rate_ & IHDA_PCM_RATE_44100) != 0);
    case 32000:
      return ((pcm_size_rate_ & IHDA_PCM_RATE_32000) != 0);
    case 22050:
      return ((pcm_size_rate_ & IHDA_PCM_RATE_22050) != 0);
    case 16000:
      return ((pcm_size_rate_ & IHDA_PCM_RATE_16000) != 0);
    case 11025:
      return ((pcm_size_rate_ & IHDA_PCM_RATE_11025) != 0);
    case 8000:
      return ((pcm_size_rate_ & IHDA_PCM_RATE_8000) != 0);
  }

  return false;
}

bool SampleCaps::SupportsFormat(audio_sample_format_t sample_format) const {
  // Intel HDA controllers should always use host-endian for the samples fed
  // to the DMA engine, and do not support unsigned audio samples.
  if (sample_format & (AUDIO_SAMPLE_FORMAT_FLAG_UNSIGNED | AUDIO_SAMPLE_FORMAT_FLAG_INVERT_ENDIAN))
    return false;

  // TODO(johngro) : Should we be doing specific bitstream/codec matching for
  // compressed audio passthru?  If so, how?
  if (sample_format == AUDIO_SAMPLE_FORMAT_BITSTREAM)
    return ((pcm_formats_ & IHDA_PCM_FORMAT_AC3) != 0);

  // If the user want's float32, need to have support for float (in the
  // formats field) and 32 bit containers (in the size/rate field)
  if (sample_format == AUDIO_SAMPLE_FORMAT_32BIT_FLOAT)
    return ((pcm_formats_ & IHDA_PCM_FORMAT_FLOAT32) != 0) &&
           ((pcm_size_rate_ & AUDIO_SAMPLE_FORMAT_32BIT) != 0);

  // User is requesting a PCM format.  Start with checking for basic support,
  // then match the user's request against the set of containers Intel HDA can
  // support.
  if (!(pcm_formats_ & IHDA_PCM_FORMAT_PCM))
    return false;

  switch (sample_format) {
    case AUDIO_SAMPLE_FORMAT_8BIT:
      return ((pcm_size_rate_ & IHDA_PCM_SIZE_8BITS) != 0);
    case AUDIO_SAMPLE_FORMAT_16BIT:
      return ((pcm_size_rate_ & IHDA_PCM_SIZE_16BITS) != 0);
    case AUDIO_SAMPLE_FORMAT_20BIT_IN32:
      return ((pcm_size_rate_ & IHDA_PCM_SIZE_20BITS) != 0);
    case AUDIO_SAMPLE_FORMAT_24BIT_IN32:
      return ((pcm_size_rate_ & IHDA_PCM_SIZE_24BITS) != 0);
    case AUDIO_SAMPLE_FORMAT_32BIT:
      return ((pcm_size_rate_ & IHDA_PCM_SIZE_32BITS) != 0);
    default:
      return false;
  }
}

}  // namespace intel_hda
}  // namespace audio