// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "media/gpu/ipc/common/media_param_traits.h"

#include <stddef.h>

#include <sstream>

#include "base/logging.h"
#include "base/numerics/safe_math.h"
#include "ipc/param_traits_utils.h"

namespace IPC {

void ParamTraits<media::BitstreamBuffer>::Write(base::Pickle* m,
                                                const param_type& p) {
  WriteParam(m, p.id());
  WriteParam(m, static_cast<uint64_t>(p.size()));
  WriteParam(m, p.offset());
  WriteParam(m, p.presentation_timestamp());
  WriteParam(m, p.key_id());
  if (!p.key_id().empty()) {
    WriteParam(m, p.iv());
    WriteParam(m, p.subsamples());
  }
  WriteParam(m, p.DuplicateRegion());
}

bool ParamTraits<media::BitstreamBuffer>::Read(const base::Pickle* m,
                                               base::PickleIterator* iter,
                                               param_type* r) {
  DCHECK(r);
  uint64_t size = 0;
  if (!(ReadParam(m, iter, &r->id_) && ReadParam(m, iter, &size) &&
        ReadParam(m, iter, &r->offset_) &&
        ReadParam(m, iter, &r->presentation_timestamp_) &&
        ReadParam(m, iter, &r->key_id_)))
    return false;

  base::CheckedNumeric<size_t> checked_size(size);
  if (!checked_size.IsValid()) {
    DLOG(ERROR) << "Invalid size: " << size;
    return false;
  }
  r->size_ = checked_size.ValueOrDie();

  if (!r->key_id_.empty()) {
    if (!(ReadParam(m, iter, &r->iv_) && ReadParam(m, iter, &r->subsamples_)))
      return false;
  }

  return ReadParam(m, iter, &r->region_);
}

}  // namespace IPC