libvmaf migration table (generated)¶

Every function of the libvmaf headers (110: 14 generated shim, 5 generated glue, 66 hand-written, 25 engine (exception)) and the VMAFx calls it is written on. libvmaf.so.3 defines them on the exported vmafx_* functions of libvmafx.so.1 and links nothing else; a function marked engine (exception) keeps the engine's own definition in libvmafx.so.1 while its backend is built, until the lane named in the last column lands. The VMAFx API page explains the layout, the deprecation warnings and the few deliberate differences.

libvmaf function	Header	VMAFx calls	Kind	Library
`vmaf_dnn_available`	`libvmaf/dnn.h`	`vmafx_dnn_available`	generated shim	libvmaf.so.3.
`vmaf_use_tiny_model`	`libvmaf/dnn.h`	`vmafx_context_from_libvmaf`, `vmafx_context_use_tiny_model`	hand-written	libvmaf.so.3. VmafDnnConfig -> VmafxDnnConfig.
`vmaf_dnn_set_codec_context`	`libvmaf/dnn.h`	`vmafx_context_from_libvmaf`, `vmafx_context_set_codec_context`	hand-written	libvmaf.so.3.
`vmaf_dnn_is_codec_aware`	`libvmaf/dnn.h`	`vmafx_context_from_libvmaf`, `vmafx_context_is_codec_aware`	hand-written	libvmaf.so.3.
`vmaf_dnn_set_resize_mode`	`libvmaf/dnn.h`	`vmafx_context_from_libvmaf`, `vmafx_context_set_tiny_resize`	hand-written	libvmaf.so.3.
`vmaf_dnn_session_open`	`libvmaf/dnn.h`	`vmafx_dnn_session_open`	hand-written	libvmaf.so.3. VmafDnnSession is VmafxDnnSession under the old name.
`vmaf_dnn_session_run_luma8`	`libvmaf/dnn.h`	`vmafx_dnn_session_run_luma8`	hand-written	libvmaf.so.3. negative w / h refused before the call.
`vmaf_dnn_session_run_plane16`	`libvmaf/dnn.h`	`vmafx_dnn_session_run_plane16`	hand-written	libvmaf.so.3.
`vmaf_dnn_session_run`	`libvmaf/dnn.h`	`vmafx_dnn_session_run`	hand-written	libvmaf.so.3. VmafDnnInput / VmafDnnOutput layouts equal VmafxDnnInput / VmafxDnnOutput.
`vmaf_dnn_session_close`	`libvmaf/dnn.h`	`vmafx_dnn_session_close`	hand-written	libvmaf.so.3.
`vmaf_dnn_session_attached_ep`	`libvmaf/dnn.h`	`vmafx_dnn_session_runtime_device`	hand-written	libvmaf.so.3.
`vmaf_dnn_verify_signature`	`libvmaf/dnn.h`	`vmafx_dnn_verify_signature`	hand-written	libvmaf.so.3.
`vmaf_feature_dictionary_set`	`libvmaf/feature.h`	`vmafx_options_set`	generated shim	libvmaf.so.3. VmafFeatureDictionary is VmafxOptions under the old name.
`vmaf_feature_dictionary_free`	`libvmaf/feature.h`	`vmafx_options_free`	hand-written	libvmaf.so.3.
`vmaf_init`	`libvmaf/libvmaf.h`	`vmafx_context_create`	generated glue	libvmaf.so.3.
`vmaf_use_features_from_model`	`libvmaf/libvmaf.h`	`vmafx_context_from_libvmaf`, `vmafx_model_from_libvmaf`, `vmafx_context_use_model`	hand-written	libvmaf.so.3. the context takes a model reference (ADR-1755).
`vmaf_use_features_from_model_collection`	`libvmaf/libvmaf.h`	`vmafx_context_from_libvmaf`, `vmafx_model_set_from_libvmaf`, `vmafx_context_use_model_set`	hand-written	libvmaf.so.3.
`vmaf_use_feature`	`libvmaf/libvmaf.h`	`vmafx_context_from_libvmaf`, `vmafx_context_use_feature`, `vmafx_options_free`	hand-written	libvmaf.so.3. consumes opts_dict past the argument checks, as libvmaf does.
`vmaf_import_feature_score`	`libvmaf/libvmaf.h`	`vmafx_context_import_score`	generated shim	libvmaf.so.3.
`vmaf_read_pictures`	`libvmaf/libvmaf.h`	`vmafx_context_from_libvmaf`, `vmafx_frame_from_picture`, `vmafx_frame_unref`, `vmafx_submit`, `vmafx_flush`	hand-written	libvmaf.so.3. (NULL, NULL) flushes; both pictures consumed on every path past the argument checks.
`vmaf_set_sample_range_check_enabled`	`libvmaf/libvmaf.h`	`vmafx_context_from_libvmaf`, `vmafx_context_set_option`	hand-written	libvmaf.so.3. option check_sample_range (ADR-1918).
`vmaf_set_input_colorimetry`	`libvmaf/libvmaf.h`	`vmafx_context_from_libvmaf`, `vmafx_context_set_default_color`	hand-written	libvmaf.so.3. the colour of frames that carry none; VmafxFrameDesc.color gives a frame its own (ADR-2093).
`vmaf_score_at_index`	`libvmaf/libvmaf.h`	`vmafx_score_frame`	generated shim	libvmaf.so.3.
`vmaf_score_at_index_model_collection`	`libvmaf/libvmaf.h`	`vmafx_context_from_libvmaf`, `vmafx_model_set_from_libvmaf`, `vmafx_score_frame_model_set`	hand-written	libvmaf.so.3. VmafxModelSetScore -> VmafModelCollectionScore.
`vmaf_feature_score_at_index`	`libvmaf/libvmaf.h`	`vmafx_feature_score`	generated shim	libvmaf.so.3.
`vmaf_score_pooled`	`libvmaf/libvmaf.h`	`vmafx_score_pooled`	generated glue	libvmaf.so.3. pool values equal; VMAFX_PENDING -> -EAGAIN.
`vmaf_score_pooled_model_collection`	`libvmaf/libvmaf.h`	`vmafx_context_from_libvmaf`, `vmafx_model_set_from_libvmaf`, `vmafx_score_pooled_model_set`	hand-written	libvmaf.so.3.
`vmaf_feature_score_pooled`	`libvmaf/libvmaf.h`	`vmafx_feature_score_pooled`	generated glue	libvmaf.so.3.
`vmaf_preallocate_pictures`	`libvmaf/libvmaf.h`	`vmafx_context_from_libvmaf`, `vmafx_context_preallocate`	hand-written	libvmaf.so.3. pool owned by the bridged context; pinned for an imported GPU state as before.
`vmaf_fetch_preallocated_picture`	`libvmaf/libvmaf.h`	`vmafx_context_from_libvmaf`, `vmafx_context_acquire_frame`, `vmafx_frame_to_picture`, `vmafx_frame_unref`	hand-written	libvmaf.so.3.
`vmaf_close`	`libvmaf/libvmaf.h`	`vmafx_context_destroy`	generated shim	libvmaf.so.3.
`vmaf_write_output`	`libvmaf/libvmaf.h`	`vmafx_report_write`	generated glue	libvmaf.so.3. format values equal; JSON / XML carry the provenance record (ADR-2073).
`vmaf_write_output_with_format`	`libvmaf/libvmaf.h`	`vmafx_report_write`	generated glue	libvmaf.so.3.
`vmaf_context_get_backend`	`libvmaf/libvmaf.h`	`vmafx_context_from_libvmaf`, `vmafx_context_backend`	hand-written	libvmaf.so.3. backend values equal.
`vmaf_feature_backend_twin`	`libvmaf/libvmaf.h`	`vmafx_context_from_libvmaf`, `vmafx_feature_resolve`	hand-written	libvmaf.so.3. VmafxFeatureResolution -> (twin_name, unsupported_option).
`vmaf_registered_feature_extractor`	`libvmaf/libvmaf.h`	`vmafx_context_from_libvmaf`, `vmafx_context_extractor_info`	hand-written	libvmaf.so.3.
`vmaf_version`	`libvmaf/libvmaf.h`	`vmafx_version_string`	generated shim	libvmaf.so.3.
`vmaf_cuda_state_init`	`libvmaf/libvmaf_cuda.h`	`vmafx_device_create (CUDA, external context)`	engine (exception)	libvmafx.so.1 in builds with cuda; until the CUDA lane of RC4 WP3 (#2277) lands: then a manual compat function on its CUDA device frames.
`vmaf_cuda_state_free`	`libvmaf/libvmaf_cuda.h`	`vmafx_device_unref`	engine (exception)	libvmafx.so.1 in builds with cuda; until the CUDA lane of RC4 WP3 (#2277) lands: then a manual compat function on its CUDA device frames.
`vmaf_cuda_import_state`	`libvmaf/libvmaf_cuda.h`	`vmafx_context_use_device`	engine (exception)	libvmafx.so.1 in builds with cuda; until the CUDA lane of RC4 WP3 (#2277) lands: then a manual compat function on its CUDA device frames.
`vmaf_cuda_preallocate_pictures`	`libvmaf/libvmaf_cuda.h`	`vmafx_frame_pool_create (CUDA device)`	engine (exception)	libvmafx.so.1 in builds with cuda; until the CUDA lane of RC4 WP3 (#2277) lands: then a manual compat function on its CUDA device frames.
`vmaf_cuda_fetch_preallocated_picture`	`libvmaf/libvmaf_cuda.h`	`vmafx_frame_pool_acquire + vmafx_frame_to_picture`	engine (exception)	libvmafx.so.1 in builds with cuda; until the CUDA lane of RC4 WP3 (#2277) lands: then a manual compat function on its CUDA device frames.
`vmaf_hip_available`	`libvmaf/libvmaf_hip.h`	`vmafx_device_count`	hand-written	libvmaf.so.3 in builds without hip; with it, libvmafx.so.1 until the HIP lane of RC4 WP3 lands: then the compat function serves HIP builds too. builds without HIP; HIP builds keep the engine definition.
`vmaf_hip_state_init`	`libvmaf/libvmaf_hip.h`	`vmafx_device_create`, `vmafx_device_unref`	hand-written	libvmaf.so.3 in builds without hip; with it, libvmafx.so.1 until the HIP lane of RC4 WP3 lands: then the compat function serves HIP builds too.
`vmaf_hip_import_state`	`libvmaf/libvmaf_hip.h`	`vmafx_context_use_device`	hand-written	libvmaf.so.3 in builds without hip; with it, libvmafx.so.1 until the HIP lane of RC4 WP3 lands: then the compat function serves HIP builds too.
`vmaf_hip_state_free`	`libvmaf/libvmaf_hip.h`	`vmafx_device_unref`	hand-written	libvmaf.so.3 in builds without hip; with it, libvmafx.so.1 until the HIP lane of RC4 WP3 lands: then the compat function serves HIP builds too.
`vmaf_hip_list_devices`	`libvmaf/libvmaf_hip.h`	`vmafx_device_count`	hand-written	libvmaf.so.3 in builds without hip; with it, libvmafx.so.1 until the HIP lane of RC4 WP3 lands: then the compat function serves HIP builds too.
`vmaf_mcp_available`	`libvmaf/libvmaf_mcp.h`	`vmafx_mcp_available`	generated shim	libvmaf.so.3 in builds with mcp.
`vmaf_mcp_transport_available`	`libvmaf/libvmaf_mcp.h`	`vmafx_mcp_transport_available`	generated shim	libvmaf.so.3 in builds with mcp.
`vmaf_mcp_init`	`libvmaf/libvmaf_mcp.h`	`vmafx_context_from_libvmaf`, `vmafx_mcp_server_create`	hand-written	libvmaf.so.3 in builds with mcp. VmafMcpServer is VmafxMcpServer under the old name.
`vmaf_mcp_start_sse`	`libvmaf/libvmaf_mcp.h`	`vmafx_mcp_start_sse`	hand-written	libvmaf.so.3 in builds with mcp. the bound port is written back to cfg->port.
`vmaf_mcp_start_uds`	`libvmaf/libvmaf_mcp.h`	`vmafx_mcp_start_uds`	hand-written	libvmaf.so.3 in builds with mcp.
`vmaf_mcp_start_stdio`	`libvmaf/libvmaf_mcp.h`	`vmafx_mcp_start_stdio`	hand-written	libvmaf.so.3 in builds with mcp.
`vmaf_mcp_stop`	`libvmaf/libvmaf_mcp.h`	`vmafx_mcp_stop`	hand-written	libvmaf.so.3 in builds with mcp.
`vmaf_mcp_close`	`libvmaf/libvmaf_mcp.h`	`vmafx_mcp_server_destroy`	hand-written	libvmaf.so.3 in builds with mcp.
`vmaf_metal_available`	`libvmaf/libvmaf_metal.h`	`vmafx_device_count`	hand-written	libvmaf.so.3 in builds without metal; with it, libvmafx.so.1 until the Metal lane of RC4 WP3 lands: then the compat function serves Metal builds too. builds without Metal; Metal builds keep the engine definition.
`vmaf_metal_state_init`	`libvmaf/libvmaf_metal.h`	`vmafx_device_create`, `vmafx_device_unref`	hand-written	libvmaf.so.3 in builds without metal; with it, libvmafx.so.1 until the Metal lane of RC4 WP3 lands: then the compat function serves Metal builds too.
`vmaf_metal_import_state`	`libvmaf/libvmaf_metal.h`	`vmafx_context_use_device`	hand-written	libvmaf.so.3 in builds without metal; with it, libvmafx.so.1 until the Metal lane of RC4 WP3 lands: then the compat function serves Metal builds too.
`vmaf_metal_state_free`	`libvmaf/libvmaf_metal.h`	`vmafx_device_unref`	hand-written	libvmaf.so.3 in builds without metal; with it, libvmafx.so.1 until the Metal lane of RC4 WP3 lands: then the compat function serves Metal builds too.
`vmaf_metal_list_devices`	`libvmaf/libvmaf_metal.h`	`vmafx_device_count`	hand-written	libvmaf.so.3 in builds without metal; with it, libvmafx.so.1 until the Metal lane of RC4 WP3 lands: then the compat function serves Metal builds too.
`vmaf_metal_state_init_external`	`libvmaf/libvmaf_metal.h`	`vmafx_device_create`, `vmafx_device_unref`	hand-written	libvmaf.so.3 in builds without metal; with it, libvmafx.so.1 until the Metal lane of RC4 WP3 lands: then the compat function serves Metal builds too.
`vmaf_metal_picture_import`	`libvmaf/libvmaf_metal.h`	`vmafx_frame_import`	hand-written	libvmaf.so.3 in builds without metal; with it, libvmafx.so.1 until the Metal lane of RC4 WP3 lands: then the compat function serves Metal builds too.
`vmaf_metal_wait_compute`	`libvmaf/libvmaf_metal.h`	`vmafx_fence_wait`	hand-written	libvmaf.so.3 in builds without metal; with it, libvmafx.so.1 until the Metal lane of RC4 WP3 lands: then the compat function serves Metal builds too.
`vmaf_metal_read_imported_pictures`	`libvmaf/libvmaf_metal.h`	`vmafx_submit`	hand-written	libvmaf.so.3 in builds without metal; with it, libvmafx.so.1 until the Metal lane of RC4 WP3 lands: then the compat function serves Metal builds too.
`vmaf_sycl_state_init`	`libvmaf/libvmaf_sycl.h`	`vmafx_device_create (SYCL, by index)`	engine (exception)	libvmafx.so.1 in builds with sycl; until the SYCL lane of RC4 WP3 lands: then a manual compat function on its SYCL device frames.
`vmaf_sycl_import_state`	`libvmaf/libvmaf_sycl.h`	`vmafx_context_use_device`	engine (exception)	libvmafx.so.1 in builds with sycl; until the SYCL lane of RC4 WP3 lands: then a manual compat function on its SYCL device frames.
`vmaf_sycl_preallocate_pictures`	`libvmaf/libvmaf_sycl.h`	`vmafx_frame_pool_create (SYCL device)`	engine (exception)	libvmafx.so.1 in builds with sycl; until the SYCL lane of RC4 WP3 lands: then a manual compat function on its SYCL device frames.
`vmaf_sycl_picture_fetch`	`libvmaf/libvmaf_sycl.h`	`vmafx_frame_pool_acquire + vmafx_frame_to_picture`	engine (exception)	libvmafx.so.1 in builds with sycl; until the SYCL lane of RC4 WP3 lands: then a manual compat function on its SYCL device frames.
`vmaf_sycl_init_frame_buffers`	`libvmaf/libvmaf_sycl.h`	`vmafx_frame_pool_create (SYCL device, 2 frames)`	engine (exception)	libvmafx.so.1 in builds with sycl; until the SYCL lane of RC4 WP3 lands: then a manual compat function on its SYCL device frames.
`vmaf_sycl_get_frame_buffers`	`libvmaf/libvmaf_sycl.h`	`vmafx_frame_planes`	engine (exception)	libvmafx.so.1 in builds with sycl; until the SYCL lane of RC4 WP3 lands: then a manual compat function on its SYCL device frames.
`vmaf_sycl_wait_compute`	`libvmaf/libvmaf_sycl.h`	`vmafx_fence_wait (frame release fence)`	engine (exception)	libvmafx.so.1 in builds with sycl; until the SYCL lane of RC4 WP3 lands: then a manual compat function on its SYCL device frames.
`vmaf_read_pictures_sycl`	`libvmaf/libvmaf_sycl.h`	`vmafx_submit (imported frames)`	engine (exception)	libvmafx.so.1 in builds with sycl; until the SYCL lane of RC4 WP3 lands: then a manual compat function on its SYCL device frames.
`vmaf_flush_sycl`	`libvmaf/libvmaf_sycl.h`	`vmafx_flush`	engine (exception)	libvmafx.so.1 in builds with sycl; until the SYCL lane of RC4 WP3 lands: then a manual compat function on its SYCL device frames.
`vmaf_sycl_dmabuf_import`	`libvmaf/libvmaf_sycl.h`	`vmafx_frame_import (dma-buf)`	engine (exception)	libvmafx.so.1 in builds with sycl; until the SYCL lane of RC4 WP3 lands: then a manual compat function on its SYCL device frames.
`vmaf_sycl_dmabuf_free`	`libvmaf/libvmaf_sycl.h`	`vmafx_frame_unref`	engine (exception)	libvmafx.so.1 in builds with sycl; until the SYCL lane of RC4 WP3 lands: then a manual compat function on its SYCL device frames.
`vmaf_sycl_import_va_surface`	`libvmaf/libvmaf_sycl.h`	`vmafx_frame_import (dma-buf exported from the surface)`	engine (exception)	libvmafx.so.1 in builds with sycl; until the SYCL lane of RC4 WP3 lands: then a manual compat function on its SYCL device frames.
`vmaf_sycl_upload_plane`	`libvmaf/libvmaf_sycl.h`	`vmafx_frame_import (host plane upload)`	engine (exception)	libvmafx.so.1 in builds with sycl; until the SYCL lane of RC4 WP3 lands: then a manual compat function on its SYCL device frames.
`vmaf_sycl_import_d3d11_surface`	`libvmaf/libvmaf_sycl.h`	`vmafx_frame_import (Windows shared texture)`	engine (exception)	libvmafx.so.1 in builds with sycl; until the SYCL lane of RC4 WP3 lands: then a manual compat function on its SYCL device frames.
`vmaf_sycl_profiling_enable`	`libvmaf/libvmaf_sycl.h`	`vmafx_device_create (VMAFX_DEVICE_PROFILING)`	engine (exception)	libvmafx.so.1 in builds with sycl; until the SYCL lane of RC4 WP3 lands: then a manual compat function on its SYCL device frames.
`vmaf_sycl_profiling_disable`	`libvmaf/libvmaf_sycl.h`	`vmafx_device_create (VMAFX_DEVICE_PROFILING)`	engine (exception)	libvmafx.so.1 in builds with sycl; until the SYCL lane of RC4 WP3 lands: then a manual compat function on its SYCL device frames.
`vmaf_sycl_profiling_print`	`libvmaf/libvmaf_sycl.h`	`vmafx_device_profile`	engine (exception)	libvmafx.so.1 in builds with sycl; until the SYCL lane of RC4 WP3 lands: then a manual compat function on its SYCL device frames.
`vmaf_sycl_profiling_get_string`	`libvmaf/libvmaf_sycl.h`	`vmafx_device_profile`	engine (exception)	libvmafx.so.1 in builds with sycl; until the SYCL lane of RC4 WP3 lands: then a manual compat function on its SYCL device frames.
`vmaf_sycl_state_free`	`libvmaf/libvmaf_sycl.h`	`vmafx_device_unref`	engine (exception)	libvmafx.so.1 in builds with sycl; until the SYCL lane of RC4 WP3 lands: then a manual compat function on its SYCL device frames.
`vmaf_sycl_list_devices`	`libvmaf/libvmaf_sycl.h`	`vmafx_device_count + vmafx_device_info`	engine (exception)	libvmafx.so.1 in builds with sycl; until the SYCL lane of RC4 WP3 lands: then a manual compat function on its SYCL device frames.
`vmaf_model_load`	`libvmaf/model.h`	`vmafx_model_load`, `vmafx_model_libvmaf_handle`	hand-written	libvmaf.so.3. VmafModelConfig -> VmafxModelConfig.
`vmaf_model_load_from_path`	`libvmaf/model.h`	`vmafx_model_load_file`, `vmafx_model_libvmaf_handle`	hand-written	libvmaf.so.3.
`vmaf_model_feature_overload`	`libvmaf/model.h`	`vmafx_model_from_libvmaf`, `vmafx_model_override_feature`, `vmafx_options_free`	hand-written	libvmaf.so.3. consumes opts_dict past the argument checks, as libvmaf does.
`vmaf_model_destroy`	`libvmaf/model.h`	`vmafx_model_unref`	generated shim	libvmaf.so.3. drops the caller reference; mounted models live on (ADR-1755).
`vmaf_model_feature_count`	`libvmaf/model.h`	`vmafx_model_feature_count`	generated shim	libvmaf.so.3.
`vmaf_model_feature_name`	`libvmaf/model.h`	`vmafx_model_feature_name`	generated shim	libvmaf.so.3.
`vmaf_model_collection_load`	`libvmaf/model.h`	`vmafx_model_set_load`, `vmafx_model_set_lead`, `vmafx_model_ref`, `vmafx_model_libvmaf_handle`, `vmafx_model_set_libvmaf_handle`	hand-written	libvmaf.so.3. returns the lead model as VmafModel as libvmaf does.
`vmaf_model_collection_load_from_path`	`libvmaf/model.h`	`vmafx_model_set_load_file`, `vmafx_model_set_lead`, `vmafx_model_ref`, `vmafx_model_libvmaf_handle`, `vmafx_model_set_libvmaf_handle`	hand-written	libvmaf.so.3.
`vmaf_model_collection_feature_overload`	`libvmaf/model.h`	`vmafx_model_from_libvmaf`, `vmafx_model_set_from_libvmaf`, `vmafx_model_set_lead`, `vmafx_model_unref`, `vmafx_model_set_override_feature`, `vmafx_model_ref`, `vmafx_model_override_feature`, `vmafx_options_free`	hand-written	libvmaf.so.3.
`vmaf_model_collection_destroy`	`libvmaf/model.h`	`vmafx_model_set_unref`	generated shim	libvmaf.so.3.
`vmaf_model_version_next`	`libvmaf/model.h`	`vmafx_model_builtin_next`	hand-written	libvmaf.so.3. the cursor is the version string.
`vmaf_default_model_version`	`libvmaf/model.h`	`vmafx_model_default_version`	generated shim	libvmaf.so.3.
`vmaf_set_perceptual_weight_enabled`	`libvmaf/perceptual_weight.h`	`vmafx_context_from_libvmaf`, `vmafx_context_set_option`	hand-written	libvmaf.so.3. option perceptual_weight.
`vmaf_set_perceptual_weight_strength`	`libvmaf/perceptual_weight.h`	`vmafx_context_from_libvmaf`, `vmafx_context_set_option`	hand-written	libvmaf.so.3. option perceptual_weight_strength, %.17g.
`vmaf_set_perceptual_sidedata`	`libvmaf/perceptual_weight.h`	`vmafx_context_from_libvmaf`, `vmafx_context_attach_sidedata`	hand-written	libvmaf.so.3.
`vmaf_picture_alloc`	`libvmaf/picture.h`	`vmafx_frame_create_host`, `vmafx_frame_to_picture`, `vmafx_frame_unref`	hand-written	libvmaf.so.3. VmafPicture stays a caller-visible struct: a view of a host frame.
`vmaf_picture_unref`	`libvmaf/picture.h`	`vmafx_frame_from_picture`, `vmafx_frame_unref`	hand-written	libvmaf.so.3.
`vmaf_picture_wrap`	`libvmaf/picture.h`	`vmafx_frame_wrap_host`, `vmafx_frame_to_picture`, `vmafx_frame_unref`	hand-written	libvmaf.so.3. A view of a host frame on the caller's planes; release_picture runs from the frame's release (ADR-2949).
`vmaf_picture_convert_context_init_with_color`	`libvmaf/picture.h`	`vmafx_frame_converter_create`	hand-written	libvmaf.so.3. VmafColor + VmafPictureConvertTarget -> VmafxConvertDesc (#2140).
`vmaf_picture_convert`	`libvmaf/picture.h`	`vmafx_frame_from_picture`, `vmafx_frame_wrap_host`, `vmafx_frame_convert`, `vmafx_frame_to_picture`, `vmafx_frame_unref`	hand-written	libvmaf.so.3.
`vmaf_picture_convert_context_close`	`libvmaf/picture.h`	`vmafx_frame_converter_destroy`	hand-written	libvmaf.so.3.
`vmaf_picture2_alloc`	`libvmaf/picture_v2.h`	`vmafx_frame_create_host`, `vmafx_frame_to_picture`, `vmafx_frame_unref`	hand-written	libvmaf.so.3. v2 struct kept until 2.0 with v1.
`vmaf_picture2_unref`	`libvmaf/picture_v2.h`	`vmafx_frame_from_picture`, `vmafx_frame_unref`	hand-written	libvmaf.so.3.
`vmaf_picture_v1_to_v2`	`libvmaf/picture_v2.h`	`vmafx_frame_from_picture`, `vmafx_frame_to_picture`, `vmafx_frame_unref`	hand-written	libvmaf.so.3. one more reference, as libvmaf takes.
`vmaf_picture_v2_to_v1`	`libvmaf/picture_v2.h`	`vmafx_frame_from_picture`, `vmafx_frame_to_picture`, `vmafx_frame_unref`	hand-written	libvmaf.so.3.
`vmaf_backend_handle_name`	`libvmaf/picture_v2.h`	`vmafx_backend_name`	hand-written	libvmaf.so.3. VMAF_BACKEND_HANDLE_* mapped to VmafxBackend; NONE and the removed backend keep their names.

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