Adds test vector 855

- Also supports live loudness info.

PiperOrigin-RevId: 859466161

Author: yeroro

iamf/cli/proto/mix_presentation.proto

@@ -173,10 +173,13 @@ message AnchoredLoudness {
 }
 
 enum LoudnessInfoTypeBitMask {
+  option allow_alias = true;
+
   LOUDNESS_INFO_TYPE_INVALID = 0;
   LOUDNESS_INFO_TYPE_TRUE_PEAK = 1;
   LOUDNESS_INFO_TYPE_ANCHORED_LOUDNESS = 2;
-  LOUDNESS_INFO_TYPE_RESERVED_4 = 4;
+  LOUDNESS_INFO_TYPE_RESERVED_4 = 4 [deprecated = true];
+  LOUDNESS_INFO_TYPE_LIVE = 4;
   LOUDNESS_INFO_TYPE_RESERVED_8 = 8;
   LOUDNESS_INFO_TYPE_RESERVED_16 = 16;
   LOUDNESS_INFO_TYPE_RESERVED_32 = 32;

iamf/cli/proto_conversion/lookup_tables.h

@@ -208,7 +208,7 @@ class LookupTables {
                   LoudnessInfo::InfoTypeBitmask>>(
         {{LOUDNESS_INFO_TYPE_TRUE_PEAK, kTruePeak},
          {LOUDNESS_INFO_TYPE_ANCHORED_LOUDNESS, kAnchoredLoudness},
-         {LOUDNESS_INFO_TYPE_RESERVED_4, kInfoTypeBitMask4},
+         {LOUDNESS_INFO_TYPE_LIVE, kLive},
          {LOUDNESS_INFO_TYPE_RESERVED_8, kInfoTypeBitMask8},
          {LOUDNESS_INFO_TYPE_RESERVED_16, kInfoTypeBitMask16},
          {LOUDNESS_INFO_TYPE_RESERVED_32, kInfoTypeBitMask32},

iamf/cli/proto_conversion/proto_to_obu/tests/mix_presentation_generator_test.cc

@@ -1647,6 +1647,20 @@ TEST(CopyUserAnchoredLoudness, IllegalUnknownAnchorElementEnum) {
                    .ok());
 }
 
+TEST(CopyUserLayoutExtension, LiveLoudnessInfoType) {
+  // `info_type` must be configured as a prerequisite.
+  LoudnessInfo output_loudness = {.info_type = LoudnessInfo::kLive};
+
+  // Configure user data to copy in.
+  iamf_tools_cli_proto::LoudnessInfo user_loudness;
+  user_loudness.set_info_type_bytes("");
+
+  EXPECT_THAT(MixPresentationGenerator::CopyUserLayoutExtension(
+                  user_loudness, output_loudness),
+              IsOk());
+  EXPECT_TRUE(output_loudness.layout_extension.info_type_bytes.empty());
+}
+
 TEST(CopyUserLayoutExtension, AllInfoTypeExtensions) {
   // `info_type` must be configured as a prerequisite.
   LoudnessInfo output_loudness = {.info_type =
@@ -1665,7 +1679,8 @@ TEST(CopyUserLayoutExtension, AllInfoTypeExtensions) {
 
 TEST(CopyUserLayoutExtension, OneInfoTypeExtension) {
   // `info_type` must be configured as a prerequisite.
-  LoudnessInfo output_loudness = {.info_type = LoudnessInfo::kInfoTypeBitMask4};
+  LoudnessInfo output_loudness = {.info_type =
+                                      LoudnessInfo::kInfoTypeBitMask128};
 
   // Configure user data to copy in.
   iamf_tools_cli_proto::LoudnessInfo user_loudness;
@@ -1680,7 +1695,8 @@ TEST(CopyUserLayoutExtension, OneInfoTypeExtension) {
 
 TEST(CopyUserLayoutExtension, IgnoresDeprecatedInfoTypeSizeField) {
   // `info_type` must be configured as a prerequisite.
-  LoudnessInfo output_loudness = {.info_type = LoudnessInfo::kInfoTypeBitMask4};
+  LoudnessInfo output_loudness = {.info_type =
+                                      LoudnessInfo::kInfoTypeBitMask128};
 
   // Configure user data to copy in.
   iamf_tools_cli_proto::LoudnessInfo user_loudness;

iamf/cli/testdata/test_000855.textproto

@@ -0,0 +1,186 @@
+# Copyright (c) 2026, 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: iamf/cli/proto/user_metadata.proto
+# proto-message: UserMetadata
+
+test_vector_metadata {
+  human_readable_description:
+    "A Base-Advanced Profile Stream with live loudness information"
+    "provided"
+  file_name_prefix: "test_000855"
+  is_valid: true
+  is_valid_to_decode: true
+  validate_user_loudness: false
+  mp4_fixed_timestamp: "2026-01-21 00:00:00"
+  test_repository_tags: [
+    "github/aomediacodec/libiamf/main"
+  ]
+  primary_tested_spec_sections: [
+    "3.7.6/info_type == LIVE"
+  ]
+  base_test: "test_000854"
+  partition_mix_gain_parameter_blocks: false
+}
+
+encoder_control_metadata {
+  add_build_information_tag: false
+  output_rendered_file_format: OUTPUT_FORMAT_WAV_BIT_DEPTH_AUTOMATIC
+}
+
+ia_sequence_header_metadata {
+  primary_profile: PROFILE_VERSION_BASE_ADVANCED
+  additional_profile: PROFILE_VERSION_BASE_ADVANCED
+}
+
+codec_config_metadata {
+  codec_config_id: 200
+  codec_config {
+    codec_id: CODEC_ID_LPCM
+    num_samples_per_frame: 1024
+    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
+  audio_substream_ids: [0]
+  scalable_channel_layout_config {
+    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
+      }
+    ]
+  }
+}
+
+audio_element_metadata {
+  audio_element_id: 301
+  audio_element_type: AUDIO_ELEMENT_CHANNEL_BASED
+  reserved: 0
+  codec_config_id: 200
+  audio_substream_ids: [1]
+  scalable_channel_layout_config {
+    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
+  annotations_language: ["en-us"]
+  localized_presentation_annotations: ["test_mix_pres"]
+  sub_mixes {
+    audio_elements {
+      audio_element_id: 300
+      localized_element_annotations: ["test_sub_mix_0_audio_element_0"]
+      rendering_config {
+        headphones_rendering_mode: HEADPHONES_RENDERING_MODE_STEREO
+      }
+      element_mix_gain {
+        param_definition {
+          parameter_id: 100
+          parameter_rate: 48000
+          param_definition_mode: 1
+          reserved: 0
+        }
+        default_mix_gain: -768  # -3 dB.
+      }
+    }
+    audio_elements {
+      audio_element_id: 301
+      localized_element_annotations: ["test_sub_mix_0_audio_element_1"]
+      rendering_config {
+        headphones_rendering_mode: HEADPHONES_RENDERING_MODE_STEREO
+      }
+      element_mix_gain {
+        param_definition {
+          parameter_id: 100
+          parameter_rate: 48000
+          param_definition_mode: 1
+          reserved: 0
+        }
+        default_mix_gain: -768  # -3 dB.
+      }
+    }
+    output_mix_gain {
+      param_definition {
+        parameter_id: 101
+        parameter_rate: 48000
+        param_definition_mode: 1
+        reserved: 0
+      }
+      default_mix_gain: 0  # 0 dB.
+    }
+    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: [LOUDNESS_INFO_TYPE_LIVE]
+        integrated_loudness: -4940
+        digital_peak: -1018
+      }
+    }
+  }
+}
+
+audio_frame_metadata {
+  samples_to_trim_at_end_includes_padding: false
+  samples_to_trim_at_start_includes_codec_delay: false
+  wav_filename: "dialog_clip_stereo.wav"
+  audio_element_id: 300
+  channel_metadatas: [
+    { channel_id: 0 channel_label: CHANNEL_LABEL_L_2 },
+    { channel_id: 1 channel_label: CHANNEL_LABEL_R_2 }
+  ]
+}
+
+audio_frame_metadata {
+  samples_to_trim_at_end_includes_padding: false
+  samples_to_trim_at_start_includes_codec_delay: false
+  wav_filename: "dialog_clip_stereo.wav"
+  audio_element_id: 301
+  channel_metadatas: [
+    { channel_id: 0 channel_label: CHANNEL_LABEL_L_2 },
+    { channel_id: 1 channel_label: CHANNEL_LABEL_R_2 }
+  ]
+}
+
+temporal_delimiter_metadata {
+  enable_temporal_delimiters: false
+}

iamf/cli/tests/encoder_main_lib_test.cc

@@ -1156,6 +1156,9 @@ INSTANTIATE_TEST_SUITE_P(BaseAdvancedElementGainOffsetConfigValueType,
 INSTANTIATE_TEST_SUITE_P(BaseAdvancedElementGainOffsetConfigRangeType,
                          TestVector, testing::Values("test_000854.textproto"));
 
+INSTANTIATE_TEST_SUITE_P(BaseAdvancedLiveLoudnessInfoType, TestVector,
+                         testing::Values("test_000855.textproto"));
+
 INSTANTIATE_TEST_SUITE_P(Advanced1Mono_AndFourObjects, TestVector,
                          testing::Values("test_000900.textproto"));
 

iamf/obu/mix_presentation.h

@@ -95,7 +95,7 @@ struct LoudnessInfo {
   enum InfoTypeBitmask : uint8_t {
     kTruePeak = 0x01,
     kAnchoredLoudness = 0x02,
-    kInfoTypeBitMask4 = 0x04,
+    kLive = 0x04,
     kInfoTypeBitMask8 = 0x08,
     kInfoTypeBitMask16 = 0x10,
     kInfoTypeBitMask32 = 0x20,

iamf/obu/tests/mix_presentation_test.cc

@@ -445,8 +445,37 @@ TEST_F(MixPresentationObuTest,
   EXPECT_FALSE(obu_->ValidateAndWriteObu(unused_wb).ok());
 }
 
+TEST_F(MixPresentationObuTest, LiveLoudnessInfo) {
+  sub_mixes_[0].layouts[0].loudness.info_type = LoudnessInfo::kLive;
+  sub_mixes_[0].layouts[0].loudness.layout_extension = {.info_type_bytes{}};
+
+  expected_header_ = {kObuIaMixPresentation << 3, 46};
+  expected_payload_ = {
+      // Start Mix OBU.
+      10, 1, 'e', 'n', '-', 'u', 's', '\0', 'M', 'i', 'x', ' ', '1', '\0', 1,
+      // Start Submix 1
+      1, 11, 'S', 'u', 'b', 'm', 'i', 'x', ' ', '1', '\0',
+      // Start RenderingConfig.
+      RenderingConfig::kHeadphonesRenderingModeStereo
+          << kHeadphonesRenderingModeBitShift,
+      /*rendering_config_extension_size=*/0,
+      // End RenderingConfig
+      12, 13, 0x80, 0, 14, 15, 16, 0x80, 0, 17, 1,
+      // Start Layout 1 (of Submix 1).
+      (Layout::kLayoutTypeLoudspeakersSsConvention
+       << kHeadphonesRenderingModeBitShift) |
+          LoudspeakersSsConventionLayout::kSoundSystemA_0_2_0,
+      LoudnessInfo::kLive, 0, 18,  // integrated_loudness == 18 (16 bits).
+      0, 19,                       // digital_peak == 18 (16 bits).
+      0                            // info_type_size == 0.
+                                   // End Mix OBU.
+  };
+
+  InitAndTestWrite();
+}
+
 TEST_F(MixPresentationObuTest, ExtensionLayoutZero) {
-  sub_mixes_[0].layouts[0].loudness.info_type = 0x04;
+  sub_mixes_[0].layouts[0].loudness.info_type = 0x80;
   sub_mixes_[0].layouts[0].loudness.layout_extension = {.info_type_bytes{}};
 
   expected_header_ = {kObuIaMixPresentation << 3, 46};
@@ -465,7 +494,7 @@ TEST_F(MixPresentationObuTest, ExtensionLayoutZero) {
       (Layout::kLayoutTypeLoudspeakersSsConvention
        << kHeadphonesRenderingModeBitShift) |
           LoudspeakersSsConventionLayout::kSoundSystemA_0_2_0,
-      0x04, 0, 18, 0, 19, 0
+      0x80, 0, 18, 0, 19, 0
       // End Mix OBU.
   };
 
@@ -474,7 +503,7 @@ TEST_F(MixPresentationObuTest, ExtensionLayoutZero) {
 
 TEST_F(MixPresentationObuTest, NonMinimalLebGeneratorAffectsAllLeb128s) {
   // Initialize a test has several `DecodedUleb128` explicitly in the bitstream.
-  sub_mixes_[0].layouts[0].loudness.info_type = 0x04;
+  sub_mixes_[0].layouts[0].loudness.info_type = 0x80;
   sub_mixes_[0].layouts[0].loudness.layout_extension = {.info_type_bytes{}};
 
   sub_mixes_[0].audio_elements[0].rendering_config = {
@@ -527,7 +556,7 @@ TEST_F(MixPresentationObuTest, NonMinimalLebGeneratorAffectsAllLeb128s) {
       (Layout::kLayoutTypeLoudspeakersSsConvention
        << kHeadphonesRenderingModeBitShift) |
           LoudspeakersSsConventionLayout::kSoundSystemA_0_2_0,
-      0x04, 0, 18, 0, 19,
+      0x80, 0, 18, 0, 19,
       // `info_type_size` is affected by the `LebGenerator`.
       0x80 | 0, 0x00
       // End Mix OBU.
@@ -537,7 +566,7 @@ TEST_F(MixPresentationObuTest, NonMinimalLebGeneratorAffectsAllLeb128s) {
 }
 
 TEST_F(MixPresentationObuTest, ExtensionLayoutNonZero) {
-  sub_mixes_[0].layouts[0].loudness.info_type = 0x04;
+  sub_mixes_[0].layouts[0].loudness.info_type = 0x80;
   sub_mixes_[0].layouts[0].loudness.layout_extension = {
       .info_type_bytes{'e', 'x', 't', 'r', 'a'}};
 
@@ -557,7 +586,7 @@ TEST_F(MixPresentationObuTest, ExtensionLayoutNonZero) {
       (Layout::kLayoutTypeLoudspeakersSsConvention
        << kHeadphonesRenderingModeBitShift) |
           LoudspeakersSsConventionLayout::kSoundSystemA_0_2_0,
-      0x04, 0, 18, 0, 19, 5, 'e', 'x', 't', 'r', 'a'
+      0x80, 0, 18, 0, 19, 5, 'e', 'x', 't', 'r', 'a'
       // End Mix OBU.
   };