/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include <gtest/gtest.h>

#include <stdint.h>

#include "ContainerParser.h"

#include "mozilla/ArrayUtils.h"

#include "nsAutoPtr.h"

using namespace mozilla;

TEST(ContainerParser, MIMETypes) {

  const char* containerTypes[] = {

    "video/webm",

    "audio/webm",

    "video/mp4",

    "audio/mp4",

    "audio/aac"

  };

  nsAutoPtr<ContainerParser> parser;

  for (size_t i = 0; i < ArrayLength(containerTypes); ++i) {

    Maybe<MediaContainerType> containerType = MakeMediaContainerType(containerTypes[i]);

    ASSERT_TRUE(containerType.isSome());

    parser = ContainerParser::CreateForMIMEType(*containerType);

    ASSERT_NE(parser, nullptr);

  }

}

already_AddRefed<MediaByteBuffer> make_adts_header()

{

  const uint8_t test[] = { 0xff, 0xf1, 0x50, 0x80, 0x03, 0x1f, 0xfc };

  RefPtr<MediaByteBuffer> buffer(new MediaByteBuffer);

  buffer->AppendElements(test, ArrayLength(test));

  return buffer.forget();

}

TEST(ContainerParser, ADTSHeader) {

  nsAutoPtr<ContainerParser> parser;

  parser = ContainerParser::CreateForMIMEType(MediaContainerType(

                                                MEDIAMIMETYPE("audio/aac")));

  ASSERT_NE(parser, nullptr);

  // Audio data should have no gaps.

  EXPECT_EQ(parser->GetRoundingError(), 0);

  // Test a valid header.

  RefPtr<MediaByteBuffer> header = make_adts_header();

  EXPECT_TRUE(NS_SUCCEEDED(parser->IsInitSegmentPresent(header)));

  // Test variations.

  uint8_t save = header->ElementAt(1);

  for (uint8_t i = 1; i < 3; ++i) {

    // Set non-zero layer.

    header->ReplaceElementAt(1, (header->ElementAt(1) & 0xf9) | (i << 1));

    EXPECT_FALSE(NS_SUCCEEDED(parser->IsInitSegmentPresent(header)))

      << "Accepted non-zero layer in header.";

  }

  header->ReplaceElementAt(1, save);

  save = header->ElementAt(2);

  header->ReplaceElementAt(2, (header->ElementAt(2) & 0x3b) | (15 << 2));

  EXPECT_FALSE(NS_SUCCEEDED(parser->IsInitSegmentPresent(header)))

    << "Accepted explicit frequency in header.";

  header->ReplaceElementAt(2, save);

  // Test a short header.

  header->SetLength(6);

  EXPECT_FALSE(NS_SUCCEEDED(parser->IsInitSegmentPresent(header)))

    << "Accepted too-short header.";

  EXPECT_FALSE(NS_SUCCEEDED(parser->IsMediaSegmentPresent(header)))

    << "Found media segment when there was just a partial header.";

  // Test a header with short data.

  header = make_adts_header();

  header->AppendElements(1);

  EXPECT_TRUE(NS_SUCCEEDED(parser->IsInitSegmentPresent(header)))

    << "Rejected a valid header.";

  EXPECT_TRUE(NS_SUCCEEDED(parser->IsMediaSegmentPresent(header)))

    << "Rejected a one-byte media segment.";

  // Test parse results.

  header = make_adts_header();

  EXPECT_FALSE(NS_SUCCEEDED(parser->IsMediaSegmentPresent(header)))

    << "Found media segment when there was just a header.";

  int64_t start = 0;

  int64_t end = 0;

  EXPECT_TRUE(NS_FAILED(parser->ParseStartAndEndTimestamps(header, start, end)));

  EXPECT_TRUE(parser->HasInitData());

  EXPECT_TRUE(parser->HasCompleteInitData());

  MediaByteBuffer* init = parser->InitData();

  ASSERT_NE(init, nullptr);

  EXPECT_EQ(init->Length(), header->Length());

  EXPECT_EQ(parser->InitSegmentRange(), MediaByteRange(0, int64_t(header->Length())));

  // Media segment range should be empty here.

  EXPECT_EQ(parser->MediaHeaderRange(), MediaByteRange());

  EXPECT_EQ(parser->MediaSegmentRange(), MediaByteRange());

}

TEST(ContainerParser, ADTSBlankMedia) {

  nsAutoPtr<ContainerParser> parser;

  parser = ContainerParser::CreateForMIMEType(MediaContainerType(

                                                MEDIAMIMETYPE("audio/aac")));

  ASSERT_NE(parser, nullptr);

  // Audio data should have no gaps.

  EXPECT_EQ(parser->GetRoundingError(), 0);

  // Test the header only.

  RefPtr<MediaByteBuffer> header = make_adts_header();

  EXPECT_TRUE(NS_SUCCEEDED(parser->IsInitSegmentPresent(header)));

  // Test with the correct length of (invalid) frame data.

  size_t header_length = header->Length();

  size_t data_length = 24;

  size_t frame_length = header_length + data_length;

  header->AppendElements(data_length);

  EXPECT_TRUE(NS_SUCCEEDED(parser->IsInitSegmentPresent(header)))

    << "Rejected a valid header.";

  EXPECT_TRUE(NS_SUCCEEDED(parser->IsMediaSegmentPresent(header)))

    << "Rejected a full (but zeroed) media segment.";

  int64_t start = 0;

  int64_t end = 0;

  // We don't report timestamps from ADTS.

  EXPECT_TRUE(NS_FAILED(parser->ParseStartAndEndTimestamps(header, start, end)));

  EXPECT_EQ(start, 0);

  EXPECT_EQ(end, 0);

  // Verify the parser calculated header and packet data boundaries.

  EXPECT_TRUE(parser->HasInitData());

  EXPECT_TRUE(parser->HasCompleteInitData());

  MediaByteBuffer* init = parser->InitData();

  ASSERT_NE(init, nullptr);

  EXPECT_EQ(init->Length(), header_length)

    << "Found incorrect init segment length.";

  EXPECT_EQ(parser->InitSegmentRange(),

      MediaByteRange(0, int64_t(header_length)));

  // In ADTS the Media Header is the same as the Media Segment.

  MediaByteRange expected_media =

    MediaByteRange(int64_t(header_length), int64_t(frame_length));

  EXPECT_EQ(parser->MediaHeaderRange(), expected_media);

  EXPECT_EQ(parser->MediaSegmentRange(), expected_media);

}