src/codec/BUILD.bazel

load("//bazel:flags.bzl", "selects", "string_flag_with_values")
load(
    "//bazel:skia_rules.bzl",
    "exports_files_legacy",
    "generate_cpp_files_for_headers",
    "select_multi",
    "skia_cc_deps",
    "skia_cc_library",
    "skia_filegroup",
    "split_srcs_and_hdrs",
)

package(
    default_applicable_licenses = ["//:license"],
)

licenses(["notice"])

exports_files_legacy()

CORE_FILES = [
    "SkCodec.cpp",
    "SkCodecImageGenerator.cpp",
    "SkCodecImageGenerator.h",
    "SkCodecPriv.h",
    "SkColorPalette.cpp",
    "SkColorPalette.h",
    "SkExif.cpp",
    "SkFrameHolder.h",
    "SkImageGenerator_FromEncoded.cpp",
    "SkMaskSwizzler.cpp",
    "SkMaskSwizzler.h",
    "SkPixmapUtils.cpp",
    "SkPixmapUtilsPriv.h",
    "SkSampler.cpp",
    "SkSampler.h",
    "SkSwizzler.cpp",
    "SkSwizzler.h",
    "SkTiffUtility.cpp",
    "SkTiffUtility.h",
]

split_srcs_and_hdrs(
    name = "core",
    files = CORE_FILES,
)

DECODE_ANDROID_FILES = [
    "SkAndroidCodec.cpp",
    "SkAndroidCodecAdapter.cpp",
    "SkAndroidCodecAdapter.h",
    "SkSampledCodec.cpp",
    "SkSampledCodec.h",
]

split_srcs_and_hdrs(
    name = "decode_android",
    files = DECODE_ANDROID_FILES,
)

DECODE_BMP_FILES = [
    "SkBmpBaseCodec.cpp",
    "SkBmpBaseCodec.h",
    "SkBmpCodec.cpp",
    "SkBmpCodec.h",
    "SkBmpMaskCodec.cpp",
    "SkBmpMaskCodec.h",
    "SkBmpRLECodec.cpp",
    "SkBmpRLECodec.h",
    "SkBmpStandardCodec.cpp",
    "SkBmpStandardCodec.h",
    "SkWbmpCodec.cpp",
    "SkWbmpCodec.h",
]

split_srcs_and_hdrs(
    name = "decode_bmp",
    files = DECODE_BMP_FILES,
)

DECODE_GIF_FILES = [
    "SkScalingCodec.h",
    "SkWuffsCodec.cpp",
]

split_srcs_and_hdrs(
    name = "decode_gif",
    files = DECODE_GIF_FILES,
)

DECODE_JPEG_FILES = [
    "SkEncodedInfo.cpp",
    "SkJpegCodec.cpp",
    "SkJpegCodec.h",
    "SkJpegDecoderMgr.cpp",
    "SkJpegDecoderMgr.h",
    "SkJpegMetadataDecoderImpl.cpp",
    "SkJpegMetadataDecoderImpl.h",
    "SkJpegSourceMgr.cpp",
    "SkJpegSourceMgr.h",
    "SkJpegUtility.cpp",
    "SkJpegUtility.h",
    "SkParseEncodedOrigin.cpp",
    "SkParseEncodedOrigin.h",
]

split_srcs_and_hdrs(
    name = "decode_jpeg",
    files = DECODE_JPEG_FILES,
)

skia_filegroup(
    name = "shared_jpeg_hdrs",  # needed for both encoding and decoding
    srcs = [
        "SkJpegConstants.h",
    ],
    visibility = ["//src/encode:__pkg__"],
)

skia_filegroup(
    name = "xmp_srcs",
    srcs = [
        "SkXmp.cpp",
    ],
)

split_srcs_and_hdrs(
    name = "jpeg_xmp",
    files = [
        "SkJpegXmp.cpp",
        "SkJpegXmp.h",
    ],
)

DECODE_PNG_FILES = [
    "SkEncodedInfo.cpp",
    "SkIcoCodec.cpp",
    "SkIcoCodec.h",
    "SkPngCodec.cpp",
    "SkPngCodec.h",
]

split_srcs_and_hdrs(
    name = "decode_png",
    files = DECODE_PNG_FILES,
)

DECODE_RAW_FILES = [
    "SkRawCodec.cpp",
    "SkRawCodec.h",
]

split_srcs_and_hdrs(
    name = "decode_raw",
    files = DECODE_RAW_FILES,
)

DECODE_WEBP_FILES = [
    "SkEncodedInfo.cpp",
    "SkParseEncodedOrigin.cpp",
    "SkParseEncodedOrigin.h",
    "SkScalingCodec.h",
    "SkWebpCodec.cpp",
    "SkWebpCodec.h",
]

split_srcs_and_hdrs(
    name = "decode_webp",
    files = DECODE_WEBP_FILES,
)

split_srcs_and_hdrs(
    name = "decode_avif",
    files = [
        "SkAvifCodec.cpp",
        "SkAvifCodec.h",
        "SkScalingCodec.h",
    ],
)

split_srcs_and_hdrs(
    name = "decode_jxl",
    files = [
        "SkJpegxlCodec.cpp",
        "SkJpegxlCodec.h",
        "SkScalingCodec.h",
    ],
)

string_flag_with_values(
    name = "include_decoder",
    multiple = True,
    values = [
        "avif_decode_codec",
        "gif_decode_codec",
        "jpeg_decode_codec",
        "jxl_decode_codec",
        "png_decode_codec",
        "raw_decode_codec",
        "webp_decode_codec",
    ],
)

selects.config_setting_group(
    name = "needs_jpeg",
    match_any = [
        ":jpeg_decode_codec",
        ":raw_decode_codec",
    ],
)

selects.config_setting_group(
    name = "needs_jpeg_priv",
    match_any = [
        ":needs_jpeg",
        "//src/encode:jpeg_encode_codec",
    ],
)

selects.config_setting_group(
    name = "needs_png_priv",
    match_any = [
        ":png_decode_codec",
        "//src/encode:png_encode_codec",
    ],
)

skia_filegroup(
    name = "srcs",
    srcs = [
        ":core_srcs",
        ":decode_android_srcs",
        ":decode_bmp_srcs",
        ":xmp_srcs",  # TODO: Make this optional
    ] + select_multi(
        {
            ":avif_decode_codec": [":decode_avif_srcs"],
            ":gif_decode_codec": [":decode_gif_srcs"],
            ":needs_jpeg": [":decode_jpeg_srcs"],
            ":jxl_decode_codec": [":decode_jxl_srcs"],
            ":png_decode_codec": [":decode_png_srcs"],
            ":raw_decode_codec": [":decode_raw_srcs"],
            ":webp_decode_codec": [":decode_webp_srcs"],
        },
    ),
    visibility = ["//src:__pkg__"],
)

skia_filegroup(
    name = "private_hdrs",
    srcs = [
        ":core_hdrs",
        ":decode_android_hdrs",
        ":decode_bmp_hdrs",
    ] + select({
        ":needs_jpeg_priv": ["SkJpegPriv.h"],  # used by src/encode/SkJPEGWriteUtility
        "//conditions:default": [],
    }) + select({
        ":needs_png_priv": ["SkPngPriv.h"],  # used by src/encode/SkPngEncoder
        "//conditions:default": [],
    }) + select_multi(
        {
            ":avif_decode_codec": [":decode_avif_hdrs"],
            ":gif_decode_codec": [":decode_gif_hdrs"],
            ":needs_jpeg": [
                ":decode_jpeg_hdrs",
                ":shared_jpeg_hdrs",
            ],
            ":jxl_decode_codec": [":decode_jxl_hdrs"],
            ":png_decode_codec": [":decode_png_hdrs"],
            ":raw_decode_codec": [":decode_raw_hdrs"],
            ":webp_decode_codec": [":decode_webp_hdrs"],
        },
    ),
    visibility = ["//src:__pkg__"],
)

skia_cc_deps(
    name = "deps",
    visibility = ["//src:__pkg__"],
    deps = select_multi(
        {
            ":avif_decode_codec": ["@libavif"],
            ":gif_decode_codec": ["@wuffs"],
            ":needs_jpeg": ["@libjpeg_turbo"],
            "jxl_decode_codec": ["@libjxl"],
            ":png_decode_codec": ["@libpng"],
            ":raw_decode_codec": [
                "@dng_sdk",
                "@piex",
            ],
            ":webp_decode_codec": ["@libwebp"],
        },
    ),
)

PRIVATE_CODEC_HEADERS = [
    "SkCodecPriv.h",
    "SkColorPalette.h",
    "SkFrameHolder.h",
    "SkMaskSwizzler.h",
    "SkParseEncodedOrigin.h",
    "SkSampler.h",
    "SkScalingCodec.h",
    "SkSwizzler.h",
    "SkPixmapUtilsPriv.h",
    "//include/private:decode_srcs",
]

# We put any file that is used by more than one codec here to avoid potential issues if clients
# depend on multiple codecs. This is not a problem for a statically linked binary, but could maybe
# cause issues with producing a shared library (e.g. duplicate symbols showing up).
skia_cc_library(
    name = "any_decoder",
    srcs = [
        "SkCodec.cpp",
        "SkCodecImageGenerator.cpp",
        "SkCodecImageGenerator.h",
        "SkColorPalette.cpp",
        "SkEncodedInfo.cpp",
        "SkExif.cpp",
        "SkImageGenerator_FromEncoded.cpp",
        "SkMaskSwizzler.cpp",
        "SkParseEncodedOrigin.cpp",
        "SkPixmapUtils.cpp",
        "SkSampler.cpp",
        "SkSwizzler.cpp",
        "SkTiffUtility.cpp",
        "SkTiffUtility.h",
        "//include/codec:any_codec_hdrs",
    ],
    hdrs = PRIVATE_CODEC_HEADERS,
    features = ["layering_check"],
    local_defines = ["SK_DISABLE_LEGACY_INIT_DECODERS"],
    visibility = [
        "//src/ports:__pkg__",
    ],
    deps = [
        "//modules/skcms",
        "//src/base",
        "//src/core",
        "//src/core:core_priv",
    ],
)

skia_cc_library(
    name = "codec_support",
    # This is its own rule (with no srcs) to explicitly expose any_codec_hdrs
    # as public in case a client does not want to use any of our codecs, but
    # still register their own and/or make use of SkImage::DeferredFromEncodedData
    hdrs = [
        "//include/codec:any_codec_hdrs",
    ],
    visibility = [
        "//:__pkg__",
    ],
    deps = [
        ":any_decoder",
    ],
)

skia_cc_library(
    name = "codec_support_priv",
    hdrs = [
        "SkCodecImageGenerator.h",
        "//include/codec:any_codec_hdrs",
    ] + PRIVATE_CODEC_HEADERS,
    visibility = [
        "//modules/skottie:__pkg__",
        "//modules/skresources:__pkg__",
        "//src/android:__pkg__",
    ],
    deps = [
        ":any_decoder",
    ],
)

skia_cc_library(
    name = "android_codec",
    srcs = [
        "SkAndroidCodec.cpp",
        "SkAndroidCodecAdapter.cpp",
        "SkAndroidCodecAdapter.h",
        "SkSampledCodec.cpp",
        "SkSampledCodec.h",
    ],
    hdrs = [
        "//include/codec:android_public_hdrs",
        "//include/codec:any_codec_hdrs",
    ],
    features = ["layering_check"],
    visibility = ["//:__subpackages__"],
    deps = [
        ":any_decoder",
        "//modules/skcms",
        "//src/base",
        "//src/core",
        "//src/core:core_priv",
    ],
)

skia_cc_library(
    name = "bmp_decode",
    srcs = [
        "SkBmpBaseCodec.cpp",
        "SkBmpBaseCodec.h",
        "SkBmpCodec.cpp",
        "SkBmpCodec.h",
        "SkBmpMaskCodec.cpp",
        "SkBmpMaskCodec.h",
        "SkBmpRLECodec.cpp",
        "SkBmpRLECodec.h",
        "SkBmpStandardCodec.cpp",
        "SkBmpStandardCodec.h",
    ],
    hdrs = [
        "//include/codec:any_codec_hdrs",
        "//include/codec:bmp_public_hdrs",
    ],
    defines = ["SK_CODEC_DECODES_BMP"],
    features = ["layering_check"],
    visibility = ["//:__subpackages__"],
    deps = [
        ":any_decoder",
        "//modules/skcms",
        "//src/base",
        "//src/core",
        "//src/core:core_priv",
    ],
)

skia_cc_library(
    name = "gif_decode",
    srcs = [
        "SkWuffsCodec.cpp",
    ],
    hdrs = [
        "//include/codec:any_codec_hdrs",
        "//include/codec:gif_public_hdrs",
    ],
    defines = ["SK_CODEC_DECODES_GIF"],
    features = ["layering_check"],
    visibility = ["//:__subpackages__"],
    deps = [
        ":any_decoder",
        "//modules/skcms",
        "//src/base",
        "//src/core",
        "//src/core:core_priv",
        "@wuffs",
    ],
)

skia_cc_library(
    name = "ico_decode",
    srcs = [
        "SkBmpCodec.h",
        "SkIcoCodec.cpp",
        "SkIcoCodec.h",
        "SkPngCodec.h",
    ],
    hdrs = [
        "//include/codec:any_codec_hdrs",
        "//include/codec:ico_public_hdrs",
    ],
    defines = ["SK_CODEC_DECODES_ICO"],
    features = ["layering_check"],
    visibility = ["//:__subpackages__"],
    deps = [
        "//src/base",
        "//src/core",
        "//src/core:core_priv",
        "//modules/skcms",
        ":any_decoder",
        # icos can be either PNG or BMP
        ":bmp_decode",
        ":png_decode",
    ],
)

skia_filegroup(
    name = "common_jpeg_srcs",
    srcs = [
        "SkJpegConstants.h",
        "SkJpegPriv.h",
    ],
    visibility = ["//src/encode:__pkg__"],
)

skia_cc_library(
    name = "jpeg_decode",
    srcs = [
        "SkJpegCodec.cpp",
        "SkJpegCodec.h",
        "SkJpegDecoderMgr.cpp",
        "SkJpegDecoderMgr.h",
        "SkJpegMetadataDecoderImpl.cpp",
        "SkJpegMetadataDecoderImpl.h",
        "SkJpegSourceMgr.cpp",
        "SkJpegSourceMgr.h",
        "SkJpegUtility.cpp",
        "SkJpegUtility.h",
        ":common_jpeg_srcs",
        "//include/private:jpeg_decode_srcs",
    ],
    hdrs = [
        "//include/codec:any_codec_hdrs",
        "//include/codec:jpeg_public_hdrs",
    ],
    defines = ["SK_CODEC_DECODES_JPEG"],
    features = ["layering_check"],
    visibility = ["//:__subpackages__"],
    deps = [
        ":any_decoder",
        "//modules/skcms",
        "//src/base",
        "//src/core",
        "//src/core:core_priv",
        "@libjpeg_turbo",
    ],
)

skia_cc_library(
    name = "jpegxl_decode",
    srcs = [
        "SkJpegxlCodec.cpp",
        "SkJpegxlCodec.h",
        ":common_jpeg_srcs",
    ],
    hdrs = [
        "//include/codec:any_codec_hdrs",
        "//include/codec:jpegxl_public_hdrs",
    ],
    defines = ["SK_CODEC_DECODES_JPEGXL"],
    features = ["layering_check"],
    visibility = ["//:__subpackages__"],
    deps = [
        ":any_decoder",
        "//modules/skcms",
        "//src/base",
        "//src/core",
        "//src/core:core_priv",
        "@libjxl",
    ],
)

skia_filegroup(
    name = "buffet_png_srcs",
    srcs = [
        "SkPngCodec.cpp",
        "SkPngCodec.h",
    ],
)

skia_filegroup(
    name = "common_png_srcs",
    srcs = [
        "SkPngPriv.h",
    ],
    visibility = ["//src/encode:__pkg__"],
)

skia_cc_library(
    name = "png_decode",
    srcs = [
        ":buffet_png_srcs",
        ":common_png_srcs",
    ],
    hdrs = [
        "//include/codec:any_codec_hdrs",
        "//include/codec:png_public_hdrs",
    ],
    defines = ["SK_CODEC_DECODES_PNG"],
    features = ["layering_check"],
    visibility = ["//:__subpackages__"],
    deps = [
        ":any_decoder",
        "//modules/skcms",
        "//src/base",
        "//src/core",
        "//src/core:core_priv",
        "@libpng",
    ],
)

skia_cc_library(
    name = "wbmp_decode",
    srcs = [
        "SkBmpBaseCodec.h",
        "SkBmpCodec.h",
        "SkBmpMaskCodec.h",
        "SkBmpRLECodec.h",
        "SkBmpStandardCodec.h",
        "SkWbmpCodec.cpp",
        "SkWbmpCodec.h",
        "//include/codec:bmp_public_hdrs",
    ],
    hdrs = [
        "//include/codec:any_codec_hdrs",
        "//include/codec:wbmp_public_hdrs",
    ],
    defines = ["SK_CODEC_DECODES_WBMP"],
    features = ["layering_check"],
    visibility = ["//:__subpackages__"],
    deps = [
        ":any_decoder",
        ":bmp_decode",  # Avoid ODR violations by not duplicating .cpp files
        "//modules/skcms",
        "//src/base",
        "//src/core",
        "//src/core:core_priv",
    ],
)

skia_cc_library(
    name = "webp_decode",
    srcs = [
        "SkWebpCodec.cpp",
        "SkWebpCodec.h",
    ],
    hdrs = [
        "//include/codec:any_codec_hdrs",
        "//include/codec:webp_public_hdrs",
    ],
    defines = ["SK_CODEC_DECODES_WEBP"],
    features = ["layering_check"],
    visibility = ["//:__subpackages__"],
    deps = [
        ":any_decoder",
        "//modules/skcms",
        "//src/base",
        "//src/core",
        "//src/core:core_priv",
        "@libwebp",
    ],
)

generate_cpp_files_for_headers(
    name = "headers_to_compile",
    headers = [
        "SkPixmapUtilsPriv.h",
        "SkScalingCodec.h",
    ],
)