Add addition test vectors based on edge-cases and extension points.

  - `test_000119`: Uses a reserved `codec_id`.
  - `test_000120`: Uses a reserved `audio_element_type`.
  - `test_000121`: Uses a reserved `param_definition_type`.
  - `test_000122`: Uses a reserved `loudspeaker_layout` in the first layer.
  - `test_000123`: Uses 28 channels.
  - `test_000129`: Uses a reserved `loudspeaker_layout` in the second layer.
  - `test_000130`: Uses a reserved `ambisonics_mode`.
  - `test_000132`: Uses fourth-order ambisonics.
  - Generated files based on AOMediaCodec/iamf-tools@02d6318

tests/README.md

@@ -54,6 +54,7 @@ Title                                                | Summary
 `sine_1000_16khz_512ms_s32le.wav`                    | Sine wave.                                                                                                          | 1        | 16kHz       | pcm_s32le | 512ms
 `sine_1000_48kHz_512ms.wav`                          | Sine wave.                                                                                                          | 2        | 48kHz       | pcm_s16le | 512ms
 `sine_1000_48kHz.wav`                                | Sine wave.                                                                                                          | 2        | 48kHz       | pcm_s16le | 500ms
+`sine_1000_4oa_48kHz.wav`                            | Sine wave using fourth-order ambisonics.                                                                            | 25       | 48kHz       | pcm_s16le | 5000ms
 `stereo_8_samples_48khz_s16le.wav`                   | Tiny test file. The first channel encodes 1, 2, ... 8. The second channel encodes 65535, 65534, ... 65528.          | 2        | 48kHz       | pcm_s16le | 8 samples
 `stereo_8_samples_48khz_s24le.wav`                   | Tiny test file. The first channel encodes 1, 2, ... 8. The second channel encodes 16777216, 16777215, ... 16777209. | 2        | 48kHz       | pcm_s24le | 8 samples
 `Transport_TOA_5s.wav`                               | Short clip of vehicles driving by using third-order ambisonics.                                                     | 16       | 48kHz       | pcm_s16le | 5s

tests/test_000119.textproto

@@ -0,0 +1,221 @@
+# Copyright (c) 2024, Alliance for Open Media. All rights reserved
+#
+# This source code is subject to the terms of the BSD 3-Clause Clear License
+# and the Alliance for Open Media Patent License 1.0. If the BSD 3-Clause Clear
+# License was not distributed with this source code in the LICENSE file, you
+# can obtain it at www.aomedia.org/license/software-license/bsd-3-c-c. If the
+# Alliance for Open Media Patent License 1.0 was not distributed with this
+# source code in the PATENTS file, you can obtain it at
+# www.aomedia.org/license/patent.
+
+# proto-file: third_party/iamf_tools/iamf/cli/proto/user_metadata.proto
+# proto-message: UserMetadata
+
+test_vector_metadata {
+  human_readable_description:
+    "An invalid stereo stream. The first mix uses a single stereo audio "
+    "element encoded with LPCM. The second mix uses a single stereo audio "
+    "element encoded with an imaginary `codec_id`. For convenience, the "
+    "imaginary `codec_id` uses the same syntax as LPCM."
+  file_name_prefix: "test_000119"
+  is_valid: false
+  partition_mix_gain_parameter_blocks: false
+  validate_user_loudness: true
+  mp4_fixed_timestamp: "2024-07-17 00:00:00"
+  primary_tested_spec_sections: [
+    "3.5/codec_id",
+    "4.1/Simple Profile"
+  ]
+  base_test: "test_000002"
+}
+
+ia_sequence_header_metadata {
+  primary_profile: PROFILE_VERSION_SIMPLE
+  additional_profile: PROFILE_VERSION_SIMPLE
+}
+
+codec_config_metadata {
+  codec_config_id: 200
+  codec_config {
+    codec_id: CODEC_ID_LPCM
+    num_samples_per_frame: 8
+    audio_roll_distance: 0
+    decoder_config_lpcm {
+      sample_format_flags: LPCM_LITTLE_ENDIAN
+      sample_size: 16
+      sample_rate: 48000
+    }
+  }
+}
+
+audio_element_metadata {
+  audio_element_id: 300
+  audio_element_type: AUDIO_ELEMENT_CHANNEL_BASED
+  reserved: 0
+  codec_config_id: 200
+  num_substreams: 1
+  audio_substream_ids: [0]
+  num_parameters: 0
+  scalable_channel_layout_config {
+    num_layers: 1
+    reserved: 0
+    channel_audio_layer_configs: [
+      {
+        loudspeaker_layout: LOUDSPEAKER_LAYOUT_STEREO
+        output_gain_is_present_flag: 0
+        recon_gain_is_present_flag: 0
+        reserved_a: 0
+        substream_count: 1
+        coupled_substream_count: 1
+      }
+    ]
+  }
+}
+
+mix_presentation_metadata {
+  mix_presentation_id: 42
+  count_label: 1
+  language_labels: ["en-us"]
+  mix_presentation_annotations_array: [
+    {
+      mix_presentation_friendly_label: "test_mix_pres"
+    }
+  ]
+  num_sub_mixes: 1
+  sub_mixes {
+    num_audio_elements: 1
+    audio_elements {
+      audio_element_id: 300
+      mix_presentation_element_annotations_array: [
+        {
+          audio_element_friendly_label: "test_sub_mix_0_audio_element_0"
+        }
+      ]
+      rendering_config {
+        headphones_rendering_mode: HEADPHONES_RENDERING_MODE_STEREO
+      }
+      element_mix_config {
+        mix_gain {
+          param_definition {
+            parameter_id: 100
+            parameter_rate: 48000
+            param_definition_mode: 1
+            reserved: 0
+          }
+          default_mix_gain: 0
+        }
+      }
+    }
+    output_mix_config {
+      output_mix_gain {
+        param_definition {
+          parameter_id: 100
+          parameter_rate: 48000
+          param_definition_mode: 1
+          reserved: 0
+        }
+        default_mix_gain: 0
+      }
+    }
+    num_layouts: 1
+    layouts {
+      loudness_layout {
+        layout_type: LAYOUT_TYPE_LOUDSPEAKERS_SS_CONVENTION
+        ss_layout {
+          sound_system: SOUND_SYSTEM_A_0_2_0
+          reserved: 0
+        }
+      }
+      loudness {
+        info_type_bit_masks: []
+        integrated_loudness: -32768
+        digital_peak: -32768
+      }
+    }
+  }
+}
+
+audio_frame_metadata {
+  wav_filename: "stereo_8_samples_48khz_s16le.wav"
+  samples_to_trim_at_end: 6
+  samples_to_trim_at_start: 0
+  audio_element_id: 300
+  channel_ids: [0, 1]
+  channel_labels: ["L2", "R2"]
+}
+
+arbitrary_obu_metadata: [
+  {
+    # Simple profile does not support `codec_id == fake`.
+    invalidates_bitstream: true
+    insertion_hook: INSERTION_HOOK_AFTER_CODEC_CONFIGS
+    obu_type: OBU_IA_CODEC_CONFIG
+    payload:
+      "\x22"  # codec_config_id.
+      "fake"  # codec_id.
+      "\x08"  # num_samples_per_frame.
+      "\x00\x00"  # audio_roll_distance.
+      # Begin an imaginary `decoder_config`. For convenience it has the same
+      # syntax as LPCM.
+      "\x01"  # sample_format_flags.
+      "\x10"  # sample_size.
+      "\x00\x00\xbb\x80"  # sample_rate.
+  },
+  {
+    insertion_hook: INSERTION_HOOK_AFTER_AUDIO_ELEMENTS
+    obu_type: OBU_IA_AUDIO_ELEMENT
+    payload:
+      "\x33"  # audio_element_id.
+      "\x00"  # audio_element_type (3), reserved (5).
+      "\x22"  # codec_config_id.
+      "\x01"  # num_substreams.
+      "\x01"  # substream_id.
+      "\x00"  # num_parameters.
+      "\x20"  # num_layers (3), reserved (5)
+      "\x10"  # loudspeaker_layout (4), output_gain_is_present_flag (1), reserved (2).
+      "\x01"  # substream_count.
+      "\x01"  # coupled_substream_count.
+  },
+  {
+    insertion_hook: INSERTION_HOOK_AFTER_MIX_PRESENTATIONS
+    obu_type: OBU_IA_MIX_PRESENTATION
+    payload:
+      "\x44"  # mix_presentation_id.
+      "\x00"  # count_label.
+      "\x01"  # num_sub_mixes.
+      "\x01"  # num_audio_elements.
+      "\x33"  # audio_element_id.
+      "\x00"  # headphones_rendering_mode (2), reserved (6).
+      "\x00"  # rendering_config_size.
+      # Begin ElementMixGain.
+      "\x66"  # parameter_id.
+      "\x80\xf7\x02"  # parameter_rate (leb128).
+      "\x80"  # param_definition_mode (1), reserved (7).
+      "\x00\00"  # default_mix_gain.
+      # Begin OutputMixGain.
+      "\x66"  # parameter_id.
+      "\x80\xf7\x02"  # parameter_rate (leb128).
+      "\x80"  # param_definition_mode (1), reserved (7).
+      "\x00\00"  # default_mix_gain.
+      "\x01"  # num_layouts.
+      "\x80"  # layout_type (2), sound_system (4), reserved (2).
+      "\x00"  # info_type.
+      "\x00\x00"  # integrated_loudness.
+      "\x00\x00"  # digital_peak.
+  },
+  {
+    insertion_hook: INSERTION_HOOK_AFTER_AUDIO_FRAMES_AT_TICK
+    insertion_tick: 0
+    obu_type: OBU_IA_AUDIO_FRAME_ID_1
+    obu_header: {
+      num_samples_to_trim_at_end: 6
+    }
+    # A short payload which which represents an audio frame encoding using an
+    # imaginary codec associated with the imaginary `codec_id`.
+    payload: "fakedata"
+  }
+]
+
+temporal_delimiter_metadata {
+  enable_temporal_delimiters: false
+}