| // Copyright 2019 Joe Drago. All rights reserved. |
| // SPDX-License-Identifier: BSD-2-Clause |
| |
| #include "avif/internal.h" |
| |
| #if !defined(AVIF_LIBYUV_ENABLED) |
| |
| // No libyuv! |
| avifResult avifImageRGBToYUVLibYUV(avifImage * image, const avifRGBImage * rgb) |
| { |
| (void)image; |
| (void)rgb; |
| return AVIF_RESULT_NOT_IMPLEMENTED; |
| } |
| avifResult avifImageYUVToRGBLibYUV(const avifImage * image, avifRGBImage * rgb, avifBool reformatAlpha, avifBool * alphaReformattedWithLibYUV) |
| { |
| (void)image; |
| (void)rgb; |
| (void)reformatAlpha; |
| *alphaReformattedWithLibYUV = AVIF_FALSE; |
| return AVIF_RESULT_NOT_IMPLEMENTED; |
| } |
| avifResult avifRGBImagePremultiplyAlphaLibYUV(avifRGBImage * rgb) |
| { |
| (void)rgb; |
| return AVIF_RESULT_NOT_IMPLEMENTED; |
| } |
| avifResult avifRGBImageUnpremultiplyAlphaLibYUV(avifRGBImage * rgb) |
| { |
| (void)rgb; |
| return AVIF_RESULT_NOT_IMPLEMENTED; |
| } |
| avifResult avifRGBImageToF16LibYUV(avifRGBImage * rgb) |
| { |
| (void)rgb; |
| return AVIF_RESULT_NOT_IMPLEMENTED; |
| } |
| unsigned int avifLibYUVVersion(void) |
| { |
| return 0; |
| } |
| |
| #else |
| |
| #include <assert.h> |
| #include <limits.h> |
| #include <string.h> |
| |
| #if defined(__clang__) |
| #pragma clang diagnostic push |
| #pragma clang diagnostic ignored "-Wstrict-prototypes" // "this function declaration is not a prototype" |
| // The newline at the end of libyuv/version.h was accidentally deleted in version 1792 and restored |
| // in version 1813: |
| // https://chromium-review.googlesource.com/c/libyuv/libyuv/+/3183182 |
| // https://chromium-review.googlesource.com/c/libyuv/libyuv/+/3527834 |
| #pragma clang diagnostic ignored "-Wnewline-eof" // "no newline at end of file" |
| #endif |
| #include <libyuv.h> |
| #if defined(__clang__) |
| #pragma clang diagnostic pop |
| #endif |
| |
| // libyuv is a C++ library and defines custom types (struct, enum, etc) in the libyuv namespace when the libyuv header files are |
| // included by C++ code. When accessed from a C library like libavif, via a function pointer, this leads to signature mismatches |
| // in the CFI sanitizers since libyuv itself, compiled as C++ code, has the types within the namespace and the C code has the |
| // types without the namespace. The same thing happens with clang's undefined behavior sanitizer as well when invoked with |
| // -fsanitize=function. So we suppress both of these sanitizers in functions that call libyuv functions via a pointer. |
| // For a simpler example of this bug, please see: https://github.com/vigneshvg/cpp_c_potential_cfi_bug. |
| // For more details on clang's CFI see: https://clang.llvm.org/docs/ControlFlowIntegrity.html. |
| // For more details on clang's UBSan see: https://clang.llvm.org/docs/UndefinedBehaviorSanitizer.html |
| #if defined(__clang__) |
| #define IGNORE_CFI_ICALL __attribute__((no_sanitize("cfi-icall", "function"))) |
| #else |
| #define IGNORE_CFI_ICALL |
| #endif |
| |
| //-------------------------------------------------------------------------------------------------- |
| // libyuv API availability management |
| |
| // These defines are used to create a NULL reference to libyuv functions that |
| // did not exist prior to a particular version of libyuv. |
| // Versions prior to 1755 are considered too old and not used (see CMakeLists.txt). |
| #if LIBYUV_VERSION < 1844 |
| // I444ToRGB24Matrix() and I422ToRGB24MatrixFilter() were added in libyuv version 1844. |
| // |
| // Note: Between the following two commits, libyuv version jumped from 1841 to 1844, down to 1843, |
| // and back to 1844. See https://chromium-review.googlesource.com/c/libyuv/libyuv/+/3906082 and |
| // https://chromium-review.googlesource.com/c/libyuv/libyuv/+/3906091. |
| #define I444ToRGB24Matrix NULL |
| #define I422ToRGB24MatrixFilter NULL |
| #endif |
| #if LIBYUV_VERSION < 1841 |
| // I420ToRGB24MatrixFilter() was added in libyuv version 1841. |
| // See https://chromium-review.googlesource.com/c/libyuv/libyuv/+/3900298. |
| #define I420ToRGB24MatrixFilter NULL |
| #endif |
| #if LIBYUV_VERSION < 1840 |
| #define ABGRToJ400 NULL |
| #endif |
| #if LIBYUV_VERSION < 1838 |
| #define I422ToRGB565Matrix NULL |
| #endif |
| #if LIBYUV_VERSION < 1813 |
| #define I422ToARGBMatrixFilter NULL |
| #define I420ToARGBMatrixFilter NULL |
| #define I210ToARGBMatrixFilter NULL |
| #define I010ToARGBMatrixFilter NULL |
| #define I420AlphaToARGBMatrixFilter NULL |
| #define I422AlphaToARGBMatrixFilter NULL |
| #define I010AlphaToARGBMatrixFilter NULL |
| #define I210AlphaToARGBMatrixFilter NULL |
| #endif |
| #if LIBYUV_VERSION < 1782 |
| #define RAWToJ420 NULL |
| #endif |
| #if LIBYUV_VERSION < 1781 |
| #define I012ToARGBMatrix NULL |
| #endif |
| #if LIBYUV_VERSION < 1780 |
| #define I410ToARGBMatrix NULL |
| #define I410AlphaToARGBMatrix NULL |
| #define I210AlphaToARGBMatrix NULL |
| #define I010AlphaToARGBMatrix NULL |
| #endif |
| #if LIBYUV_VERSION < 1771 |
| #define I422AlphaToARGBMatrix NULL |
| #define I444AlphaToARGBMatrix NULL |
| #endif |
| #if LIBYUV_VERSION < 1756 |
| #define I400ToARGBMatrix NULL |
| #endif |
| |
| // Two-step replacement for the conversions to 8-bit BT.601 YUV which are missing from libyuv. |
| static int avifReorderARGBThenConvertToYUV(int (*ReorderARGB)(const uint8_t *, int, uint8_t *, int, int, int), |
| int (*ConvertToYUV)(const uint8_t *, int, uint8_t *, int, uint8_t *, int, uint8_t *, int, int, int), |
| const uint8_t * src_abgr, |
| int src_stride_abgr, |
| uint8_t * dst_y, |
| int dst_stride_y, |
| uint8_t * dst_u, |
| int dst_stride_u, |
| uint8_t * dst_v, |
| int dst_stride_v, |
| avifPixelFormat dst_format, |
| int width, |
| int height) |
| { |
| // Only the vertically subsampled formats need to be processed by luma row pairs. |
| avifPixelFormatInfo format_info; |
| avifGetPixelFormatInfo(dst_format, &format_info); |
| const int min_num_rows = (format_info.chromaShiftY == 1) ? 2 : 1; |
| |
| // A temporary buffer is needed to call ReorderARGB(). |
| uint8_t * src_argb; |
| const int src_stride_argb = width * 4; |
| const int soft_allocation_limit = 16384; // Arbitrarily chosen trade-off between CPU and memory footprints. |
| int num_allocated_rows; |
| if ((height == 1) || ((int64_t)src_stride_argb * height <= soft_allocation_limit)) { |
| // Process the whole buffer in one go. |
| num_allocated_rows = height; |
| } else { |
| if ((int64_t)src_stride_argb * min_num_rows > INT_MAX) { |
| return -1; |
| } |
| // The last row of an odd number of RGB rows to be converted to vertically subsampled YUV is treated |
| // differently by libyuv, so make sure all steps but the last one process a multiple of min_num_rows rows. |
| // Try to process the highest multiple of min_num_rows rows possible in a single step without |
| // allocating more than soft_allocation_limit, unless min_num_rows rows need more than that. |
| num_allocated_rows = AVIF_MAX(1, soft_allocation_limit / (src_stride_argb * min_num_rows)) * min_num_rows; |
| } |
| src_argb = avifAlloc(num_allocated_rows * src_stride_argb); |
| if (!src_argb) { |
| return -1; |
| } |
| |
| for (int y = 0; y < height; y += num_allocated_rows) { |
| const int num_rows = AVIF_MIN(num_allocated_rows, height - y); |
| if (ReorderARGB(src_abgr, src_stride_abgr, src_argb, src_stride_argb, width, num_rows) || |
| ConvertToYUV(src_argb, src_stride_argb, dst_y, dst_stride_y, dst_u, dst_stride_u, dst_v, dst_stride_v, width, num_rows)) { |
| avifFree(src_argb); |
| return -1; |
| } |
| src_abgr += (size_t)num_rows * src_stride_abgr; |
| dst_y += (size_t)num_rows * dst_stride_y; |
| // Either chroma is not vertically subsampled, num_rows is even, or this is the last iteration. |
| dst_u += (size_t)(num_rows >> format_info.chromaShiftY) * dst_stride_u; |
| dst_v += (size_t)(num_rows >> format_info.chromaShiftY) * dst_stride_v; |
| } |
| avifFree(src_argb); |
| return 0; |
| } |
| |
| #define AVIF_DEFINE_CONVERSION(NAME, REORDER_ARGB, CONVERT_TO_YUV, YUV_FORMAT) \ |
| static int NAME(const uint8_t * src_abgr, \ |
| int src_stride_abgr, \ |
| uint8_t * dst_y, \ |
| int dst_stride_y, \ |
| uint8_t * dst_u, \ |
| int dst_stride_u, \ |
| uint8_t * dst_v, \ |
| int dst_stride_v, \ |
| int width, \ |
| int height) \ |
| { \ |
| return avifReorderARGBThenConvertToYUV(REORDER_ARGB, \ |
| CONVERT_TO_YUV, \ |
| src_abgr, \ |
| src_stride_abgr, \ |
| dst_y, \ |
| dst_stride_y, \ |
| dst_u, \ |
| dst_stride_u, \ |
| dst_v, \ |
| dst_stride_v, \ |
| YUV_FORMAT, \ |
| width, \ |
| height); \ |
| } |
| |
| #if LIBYUV_VERSION < 1840 |
| // AVIF_RGB_FORMAT_RGBA |
| AVIF_DEFINE_CONVERSION(ABGRToJ422, ABGRToARGB, ARGBToJ422, AVIF_PIXEL_FORMAT_YUV422) |
| AVIF_DEFINE_CONVERSION(ABGRToJ420, ABGRToARGB, ARGBToJ420, AVIF_PIXEL_FORMAT_YUV420) |
| #endif |
| |
| // These are not yet implemented in libyuv so they cannot be guarded by a version check. |
| // The "avif" prefix avoids any redefinition if they are available in libyuv one day. |
| // AVIF_RGB_FORMAT_RGB |
| AVIF_DEFINE_CONVERSION(avifRAWToI444, RAWToARGB, ARGBToI444, AVIF_PIXEL_FORMAT_YUV444) |
| AVIF_DEFINE_CONVERSION(avifRAWToI422, RAWToARGB, ARGBToI422, AVIF_PIXEL_FORMAT_YUV422) |
| AVIF_DEFINE_CONVERSION(avifRAWToJ422, RAWToARGB, ARGBToJ422, AVIF_PIXEL_FORMAT_YUV422) |
| // AVIF_RGB_FORMAT_RGBA |
| AVIF_DEFINE_CONVERSION(avifABGRToI444, ABGRToARGB, ARGBToI444, AVIF_PIXEL_FORMAT_YUV444) |
| AVIF_DEFINE_CONVERSION(avifABGRToI422, ABGRToARGB, ARGBToI422, AVIF_PIXEL_FORMAT_YUV422) |
| // AVIF_RGB_FORMAT_ARGB |
| AVIF_DEFINE_CONVERSION(avifBGRAToI444, BGRAToARGB, ARGBToI444, AVIF_PIXEL_FORMAT_YUV444) |
| AVIF_DEFINE_CONVERSION(avifBGRAToI422, BGRAToARGB, ARGBToI422, AVIF_PIXEL_FORMAT_YUV422) |
| AVIF_DEFINE_CONVERSION(avifBGRAToJ422, BGRAToARGB, ARGBToJ422, AVIF_PIXEL_FORMAT_YUV422) |
| AVIF_DEFINE_CONVERSION(avifBGRAToJ420, BGRAToARGB, ARGBToJ420, AVIF_PIXEL_FORMAT_YUV420) |
| // AVIF_RGB_FORMAT_BGR |
| AVIF_DEFINE_CONVERSION(avifRGB24ToI444, RGB24ToARGB, ARGBToI444, AVIF_PIXEL_FORMAT_YUV444) |
| AVIF_DEFINE_CONVERSION(avifRGB24ToI422, RGB24ToARGB, ARGBToI422, AVIF_PIXEL_FORMAT_YUV422) |
| AVIF_DEFINE_CONVERSION(avifRGB24ToJ422, RGB24ToARGB, ARGBToJ422, AVIF_PIXEL_FORMAT_YUV422) |
| // AVIF_RGB_FORMAT_ABGR |
| AVIF_DEFINE_CONVERSION(avifRGBAToI444, RGBAToARGB, ARGBToI444, AVIF_PIXEL_FORMAT_YUV444) |
| AVIF_DEFINE_CONVERSION(avifRGBAToI422, RGBAToARGB, ARGBToI422, AVIF_PIXEL_FORMAT_YUV422) |
| AVIF_DEFINE_CONVERSION(avifRGBAToJ422, RGBAToARGB, ARGBToJ422, AVIF_PIXEL_FORMAT_YUV422) |
| AVIF_DEFINE_CONVERSION(avifRGBAToJ420, RGBAToARGB, ARGBToJ420, AVIF_PIXEL_FORMAT_YUV420) |
| |
| //-------------------------------------------------------------------------------------------------- |
| // RGB to YUV |
| |
| static avifResult avifImageRGBToYUVLibYUV8bpc(avifImage * image, const avifRGBImage * rgb); |
| |
| avifResult avifImageRGBToYUVLibYUV(avifImage * image, const avifRGBImage * rgb) |
| { |
| if ((image->depth == 8) && (rgb->depth == 8)) { |
| return avifImageRGBToYUVLibYUV8bpc(image, rgb); |
| } |
| |
| // This function didn't do anything; use the built-in conversion. |
| return AVIF_RESULT_NOT_IMPLEMENTED; |
| } |
| |
| avifResult avifImageRGBToYUVLibYUV8bpc(avifImage * image, const avifRGBImage * rgb) |
| { |
| assert((image->depth == 8) && (rgb->depth == 8)); |
| // libavif uses byte-order when describing pixel formats, such that the R in RGBA is the lowest address, |
| // similar to PNG. libyuv orders in word-order, so libavif's RGBA would be referred to in libyuv as ABGR. |
| |
| // libyuv only handles BT.601 for RGB to YUV, and not all range/order/subsampling combinations. |
| // BT.470BG has the same coefficients as BT.601. |
| if ((image->matrixCoefficients == AVIF_MATRIX_COEFFICIENTS_BT470BG) || (image->matrixCoefficients == AVIF_MATRIX_COEFFICIENTS_BT601)) { |
| if (image->yuvFormat == AVIF_PIXEL_FORMAT_YUV400) { |
| // Lookup table for RGB To Y (monochrome). |
| typedef int (*RGBtoY)(const uint8_t *, int, uint8_t *, int, int, int); |
| // First dimension is for avifRange. |
| RGBtoY lutRgbToY[2][AVIF_RGB_FORMAT_COUNT] = { // AVIF_RANGE_LIMITED |
| { |
| // // AVIF_RGB_FORMAT_ |
| NULL, // RGB |
| NULL, // RGBA |
| NULL, // ARGB |
| NULL, // BGR |
| ARGBToI400, // BGRA |
| NULL, // ABGR |
| NULL, // RGB_565 |
| }, |
| // AVIF_RANGE_FULL |
| { |
| // // AVIF_RGB_FORMAT_ |
| RAWToJ400, // RGB |
| ABGRToJ400, // RGBA |
| NULL, // ARGB |
| RGB24ToJ400, // BGR |
| ARGBToJ400, // BGRA |
| RGBAToJ400, // ABGR |
| NULL // RGB_565 |
| } |
| }; |
| RGBtoY rgbToY = lutRgbToY[image->yuvRange][rgb->format]; |
| if (rgbToY != NULL) { |
| if (rgbToY(rgb->pixels, |
| rgb->rowBytes, |
| image->yuvPlanes[AVIF_CHAN_Y], |
| image->yuvRowBytes[AVIF_CHAN_Y], |
| image->width, |
| image->height) != 0) { |
| return AVIF_RESULT_REFORMAT_FAILED; |
| } |
| return AVIF_RESULT_OK; |
| } |
| } else { |
| // Lookup table for RGB To YUV Matrix (average filter). |
| typedef int (*RGBtoYUV)(const uint8_t *, int, uint8_t *, int, uint8_t *, int, uint8_t *, int, int, int); |
| // First dimension is for avifRange. |
| RGBtoYUV lutRgbToYuv[2][AVIF_RGB_FORMAT_COUNT][AVIF_PIXEL_FORMAT_COUNT] = { |
| // AVIF_RANGE_LIMITED |
| { |
| // { NONE, YUV444, YUV422, YUV420, YUV400 } // AVIF_RGB_FORMAT_ |
| { NULL, avifRAWToI444, avifRAWToI422, RAWToI420, NULL }, // RGB |
| { NULL, avifABGRToI444, avifABGRToI422, ABGRToI420, NULL }, // RGBA |
| { NULL, avifBGRAToI444, avifBGRAToI422, BGRAToI420, NULL }, // ARGB |
| { NULL, avifRGB24ToI444, avifRGB24ToI422, RGB24ToI420, NULL }, // BGR |
| { NULL, ARGBToI444, ARGBToI422, ARGBToI420, NULL }, // BGRA |
| { NULL, avifRGBAToI444, avifRGBAToI422, RGBAToI420, NULL }, // ABGR |
| { NULL, NULL, NULL, NULL, NULL } // RGB_565 |
| }, |
| // AVIF_RANGE_FULL |
| { |
| // { NONE, YUV444, YUV422, YUV420, YUV400 } // AVIF_RGB_FORMAT_ |
| { NULL, NULL, avifRAWToJ422, RAWToJ420, NULL }, // RGB |
| { NULL, NULL, ABGRToJ422, ABGRToJ420, NULL }, // RGBA |
| { NULL, NULL, avifBGRAToJ422, avifBGRAToJ420, NULL }, // ARGB |
| { NULL, NULL, avifRGB24ToJ422, RGB24ToJ420, NULL }, // BGR |
| { NULL, NULL, ARGBToJ422, ARGBToJ420, NULL }, // BGRA |
| { NULL, NULL, avifRGBAToJ422, avifRGBAToJ420, NULL }, // ABGR |
| { NULL, NULL, NULL, NULL, NULL } // RGB_565 |
| } |
| }; |
| RGBtoYUV rgbToYuv = lutRgbToYuv[image->yuvRange][rgb->format][image->yuvFormat]; |
| if (rgbToYuv != NULL) { |
| if (rgbToYuv(rgb->pixels, |
| rgb->rowBytes, |
| image->yuvPlanes[AVIF_CHAN_Y], |
| image->yuvRowBytes[AVIF_CHAN_Y], |
| image->yuvPlanes[AVIF_CHAN_U], |
| image->yuvRowBytes[AVIF_CHAN_U], |
| image->yuvPlanes[AVIF_CHAN_V], |
| image->yuvRowBytes[AVIF_CHAN_V], |
| image->width, |
| image->height) != 0) { |
| return AVIF_RESULT_REFORMAT_FAILED; |
| } |
| return AVIF_RESULT_OK; |
| } |
| } |
| } |
| // TODO: Use SplitRGBPlane() for AVIF_MATRIX_COEFFICIENTS_IDENTITY if faster than the built-in implementation |
| return AVIF_RESULT_NOT_IMPLEMENTED; |
| } |
| |
| //-------------------------------------------------------------------------------------------------- |
| // YUV to RGB |
| |
| // Note about the libyuv look up tables used for YUV-to-RGB conversion: |
| // libavif uses byte-order when describing pixel formats, such that the R in RGBA is the lowest address, similar to PNG. libyuv |
| // orders in word-order, so libavif's RGBA would be referred to in libyuv as ABGR. In addition, swapping U and V in any of the |
| // calls, along with using the Yvu matrix instead of Yuv matrix, swaps B and R in these orderings as well. |
| // |
| // libavif format libyuv Func UV matrix (and UV argument ordering) |
| // -------------------- ------------- ------------------------------------ |
| // For 8-bit YUV: |
| // AVIF_RGB_FORMAT_RGB *ToRGB24Matrix matrixYVU |
| // AVIF_RGB_FORMAT_RGBA *ToARGBMatrix matrixYVU |
| // AVIF_RGB_FORMAT_ARGB *ToRGBAMatrix matrixYVU |
| // AVIF_RGB_FORMAT_BGR *ToRGB24Matrix matrixYUV |
| // AVIF_RGB_FORMAT_BGRA *ToARGBMatrix matrixYUV |
| // AVIF_RGB_FORMAT_ABGR *ToRGBAMatrix matrixYUV |
| // AVIF_RGB_FORMAT_RGB_565 *ToRGB565Matrix matrixYUV |
| // |
| // For 10-bit and 12-bit YUV: |
| // AVIF_RGB_FORMAT_RGB n/a n/a |
| // AVIF_RGB_FORMAT_RGBA *ToARGBMatrix matrixYVU |
| // AVIF_RGB_FORMAT_ARGB n/a n/a |
| // AVIF_RGB_FORMAT_BGR n/a n/a |
| // AVIF_RGB_FORMAT_BGRA *ToARGBMatrix matrixYUV |
| // AVIF_RGB_FORMAT_ABGR n/a n/a |
| // AVIF_RGB_FORMAT_RGB_565 n/a n/a |
| |
| // Lookup table for isYVU. If the entry in this table is AVIF_TRUE, then it |
| // means that we are using a libyuv function with R and B channels swapped, |
| // which requires U and V planes also be swapped. |
| static const avifBool lutIsYVU[AVIF_RGB_FORMAT_COUNT] = { |
| // // AVIF_RGB_FORMAT_ |
| AVIF_TRUE, // RGB |
| AVIF_TRUE, // RGBA |
| AVIF_TRUE, // ARGB |
| AVIF_FALSE, // BGR |
| AVIF_FALSE, // BGRA |
| AVIF_FALSE, // ABGR |
| AVIF_FALSE, // RGB_565 |
| }; |
| |
| typedef int (*YUV400ToRGBMatrix)(const uint8_t *, int, uint8_t *, int, const struct YuvConstants *, int, int); |
| typedef int (*YUVToRGBMatrixFilter)(const uint8_t *, |
| int, |
| const uint8_t *, |
| int, |
| const uint8_t *, |
| int, |
| uint8_t *, |
| int, |
| const struct YuvConstants *, |
| int, |
| int, |
| enum FilterMode); |
| typedef int (*YUVAToRGBMatrixFilter)(const uint8_t *, |
| int, |
| const uint8_t *, |
| int, |
| const uint8_t *, |
| int, |
| const uint8_t *, |
| int, |
| uint8_t *, |
| int, |
| const struct YuvConstants *, |
| int, |
| int, |
| int, |
| enum FilterMode); |
| typedef int (*YUVToRGBMatrix)(const uint8_t *, int, const uint8_t *, int, const uint8_t *, int, uint8_t *, int, const struct YuvConstants *, int, int); |
| typedef int (*YUVAToRGBMatrix)(const uint8_t *, |
| int, |
| const uint8_t *, |
| int, |
| const uint8_t *, |
| int, |
| const uint8_t *, |
| int, |
| uint8_t *, |
| int, |
| const struct YuvConstants *, |
| int, |
| int, |
| int); |
| typedef int (*YUVToRGBMatrixFilterHighBitDepth)(const uint16_t *, |
| int, |
| const uint16_t *, |
| int, |
| const uint16_t *, |
| int, |
| uint8_t *, |
| int, |
| const struct YuvConstants *, |
| int, |
| int, |
| enum FilterMode); |
| typedef int (*YUVAToRGBMatrixFilterHighBitDepth)(const uint16_t *, |
| int, |
| const uint16_t *, |
| int, |
| const uint16_t *, |
| int, |
| const uint16_t *, |
| int, |
| uint8_t *, |
| int, |
| const struct YuvConstants *, |
| int, |
| int, |
| int, |
| enum FilterMode); |
| typedef int (*YUVToRGBMatrixHighBitDepth)(const uint16_t *, |
| int, |
| const uint16_t *, |
| int, |
| const uint16_t *, |
| int, |
| uint8_t *, |
| int, |
| const struct YuvConstants *, |
| int, |
| int); |
| typedef int (*YUVAToRGBMatrixHighBitDepth)(const uint16_t *, |
| int, |
| const uint16_t *, |
| int, |
| const uint16_t *, |
| int, |
| const uint16_t *, |
| int, |
| uint8_t *, |
| int, |
| const struct YuvConstants *, |
| int, |
| int, |
| int); |
| |
| // At most one pointer in this struct will be not-NULL. |
| typedef struct |
| { |
| YUV400ToRGBMatrix yuv400ToRgbMatrix; |
| YUVToRGBMatrixFilter yuvToRgbMatrixFilter; |
| YUVAToRGBMatrixFilter yuvaToRgbMatrixFilter; |
| YUVToRGBMatrix yuvToRgbMatrix; |
| YUVAToRGBMatrix yuvaToRgbMatrix; |
| YUVToRGBMatrixFilterHighBitDepth yuvToRgbMatrixFilterHighBitDepth; |
| YUVAToRGBMatrixFilterHighBitDepth yuvaToRgbMatrixFilterHighBitDepth; |
| YUVToRGBMatrixHighBitDepth yuvToRgbMatrixHighBitDepth; |
| YUVAToRGBMatrixHighBitDepth yuvaToRgbMatrixHighBitDepth; |
| } LibyuvConversionFunction; |
| |
| // Only allow nearest-neighbor filter if explicitly specified or left as default. |
| static avifBool nearestNeighborFilterAllowed(int chromaUpsampling) |
| { |
| return chromaUpsampling != AVIF_CHROMA_UPSAMPLING_BILINEAR && chromaUpsampling != AVIF_CHROMA_UPSAMPLING_BEST_QUALITY; |
| } |
| |
| // Returns AVIF_TRUE if the given yuvFormat and yuvDepth can be converted to 8-bit RGB using libyuv, AVIF_FALSE otherwise. When |
| // AVIF_TRUE is returned, exactly one function pointers will be populated with the appropriate conversion function. If |
| // alphaPreferred is set to AVIF_TRUE, then a function that can also copy the alpha channel will be preferred if available. |
| static avifBool getLibYUVConversionFunction(avifPixelFormat yuvFormat, |
| int yuvDepth, |
| avifRGBImage * rgb, |
| avifBool alphaPreferred, |
| LibyuvConversionFunction * lcf) |
| { |
| // Lookup table for 8-bit YUV400 to 8-bit RGB Matrix. |
| static const YUV400ToRGBMatrix lutYuv400ToRgbMatrix[AVIF_RGB_FORMAT_COUNT] = { |
| // // AVIF_RGB_FORMAT_ |
| NULL, // RGB |
| I400ToARGBMatrix, // RGBA |
| NULL, // ARGB |
| NULL, // BGR |
| I400ToARGBMatrix, // BGRA |
| NULL, // ABGR |
| NULL, // RGB_565 |
| }; |
| |
| // Lookup table for 8-bit YUV To 8-bit RGB Matrix (with filter). |
| static const YUVToRGBMatrixFilter lutYuvToRgbMatrixFilter[AVIF_RGB_FORMAT_COUNT][AVIF_PIXEL_FORMAT_COUNT] = { |
| // { NONE, YUV444, YUV422, YUV420, YUV400 } // AVIF_RGB_FORMAT_ |
| { NULL, NULL, I422ToRGB24MatrixFilter, I420ToRGB24MatrixFilter, NULL }, // RGB |
| { NULL, NULL, I422ToARGBMatrixFilter, I420ToARGBMatrixFilter, NULL }, // RGBA |
| { NULL, NULL, NULL, NULL, NULL }, // ARGB |
| { NULL, NULL, I422ToRGB24MatrixFilter, I420ToRGB24MatrixFilter, NULL }, // BGR |
| { NULL, NULL, I422ToARGBMatrixFilter, I420ToARGBMatrixFilter, NULL }, // BGRA |
| { NULL, NULL, NULL, NULL, NULL }, // ABGR |
| { NULL, NULL, NULL, NULL, NULL }, // RGB_565 |
| }; |
| |
| // Lookup table for 8-bit YUVA To 8-bit RGB Matrix (with filter). |
| static const YUVAToRGBMatrixFilter lutYuvaToRgbMatrixFilter[AVIF_RGB_FORMAT_COUNT][AVIF_PIXEL_FORMAT_COUNT] = { |
| // { NONE, YUV444, YUV422, YUV420, YUV400 } // AVIF_RGB_FORMAT_ |
| { NULL, NULL, NULL, NULL, NULL }, // RGB |
| { NULL, NULL, I422AlphaToARGBMatrixFilter, I420AlphaToARGBMatrixFilter, NULL }, // RGBA |
| { NULL, NULL, NULL, NULL, NULL }, // ARGB |
| { NULL, NULL, NULL, NULL, NULL }, // BGR |
| { NULL, NULL, I422AlphaToARGBMatrixFilter, I420AlphaToARGBMatrixFilter, NULL }, // BGRA |
| { NULL, NULL, NULL, NULL, NULL }, // ABGR |
| { NULL, NULL, NULL, NULL, NULL }, // RGB_565 |
| }; |
| |
| // Lookup table for 8-bit YUV To 8-bit RGB Matrix (4:4:4 or nearest-neighbor filter). |
| static const YUVToRGBMatrix lutYuvToRgbMatrix[AVIF_RGB_FORMAT_COUNT][AVIF_PIXEL_FORMAT_COUNT] = { |
| // { NONE, YUV444, YUV422, YUV420, YUV400 } // AVIF_RGB_FORMAT_ |
| { NULL, I444ToRGB24Matrix, NULL, I420ToRGB24Matrix, NULL }, // RGB |
| { NULL, I444ToARGBMatrix, I422ToARGBMatrix, I420ToARGBMatrix, NULL }, // RGBA |
| { NULL, NULL, I422ToRGBAMatrix, I420ToRGBAMatrix, NULL }, // ARGB |
| { NULL, I444ToRGB24Matrix, NULL, I420ToRGB24Matrix, NULL }, // BGR |
| { NULL, I444ToARGBMatrix, I422ToARGBMatrix, I420ToARGBMatrix, NULL }, // BGRA |
| { NULL, NULL, I422ToRGBAMatrix, I420ToRGBAMatrix, NULL }, // ABGR |
| { NULL, NULL, I422ToRGB565Matrix, I420ToRGB565Matrix, NULL }, // RGB_565 |
| }; |
| |
| // Lookup table for 8-bit YUVA To 8-bit RGB Matrix (4:4:4 or nearest-neighbor filter). |
| static const YUVAToRGBMatrix lutYuvaToRgbMatrix[AVIF_RGB_FORMAT_COUNT][AVIF_PIXEL_FORMAT_COUNT] = { |
| // { NONE, YUV444, YUV422, YUV420, YUV400 } // AVIF_RGB_FORMAT_ |
| { NULL, NULL, NULL, NULL, NULL }, // RGB |
| { NULL, I444AlphaToARGBMatrix, I422AlphaToARGBMatrix, I420AlphaToARGBMatrix, NULL }, // RGBA |
| { NULL, NULL, NULL, NULL, NULL }, // ARGB |
| { NULL, NULL, NULL, NULL, NULL }, // BGR |
| { NULL, I444AlphaToARGBMatrix, I422AlphaToARGBMatrix, I420AlphaToARGBMatrix, NULL }, // BGRA |
| { NULL, NULL, NULL, NULL, NULL }, // ABGR |
| { NULL, NULL, NULL, NULL, NULL }, // RGB_565 |
| }; |
| |
| // Lookup table for YUV To RGB Matrix (with filter). First dimension is for the YUV bit depth. |
| static const YUVToRGBMatrixFilterHighBitDepth lutYuvToRgbMatrixFilterHighBitDepth[2][AVIF_RGB_FORMAT_COUNT][AVIF_PIXEL_FORMAT_COUNT] = { |
| // 10bpc |
| { |
| // { NONE, YUV444, YUV422, YUV420, YUV400 } // AVIF_RGB_FORMAT_ |
| { NULL, NULL, NULL, NULL, NULL }, // RGB |
| { NULL, NULL, I210ToARGBMatrixFilter, I010ToARGBMatrixFilter, NULL }, // RGBA |
| { NULL, NULL, NULL, NULL, NULL }, // ARGB |
| { NULL, NULL, NULL, NULL, NULL }, // BGR |
| { NULL, NULL, I210ToARGBMatrixFilter, I010ToARGBMatrixFilter, NULL }, // BGRA |
| { NULL, NULL, NULL, NULL, NULL }, // ABGR |
| { NULL, NULL, NULL, NULL, NULL }, // RGB_565 |
| }, |
| // 12bpc |
| { |
| // { NONE, YUV444, YUV422, YUV420, YUV400 } // AVIF_RGB_FORMAT_ |
| { NULL, NULL, NULL, NULL, NULL }, // RGB |
| { NULL, NULL, NULL, NULL, NULL }, // RGBA |
| { NULL, NULL, NULL, NULL, NULL }, // ARGB |
| { NULL, NULL, NULL, NULL, NULL }, // BGR |
| { NULL, NULL, NULL, NULL, NULL }, // BGRA |
| { NULL, NULL, NULL, NULL, NULL }, // ABGR |
| { NULL, NULL, NULL, NULL, NULL }, // RGB_565 |
| }, |
| }; |
| |
| // Lookup table for YUVA To RGB Matrix (with filter). First dimension is for the YUV bit depth. |
| static const YUVAToRGBMatrixFilterHighBitDepth lutYuvaToRgbMatrixFilterHighBitDepth[2][AVIF_RGB_FORMAT_COUNT][AVIF_PIXEL_FORMAT_COUNT] = { |
| // 10bpc |
| { |
| // { NONE, YUV444, YUV422, YUV420, YUV400 } // AVIF_RGB_FORMAT_ |
| { NULL, NULL, NULL, NULL, NULL }, // RGB |
| { NULL, NULL, I210AlphaToARGBMatrixFilter, I010AlphaToARGBMatrixFilter, NULL }, // RGBA |
| { NULL, NULL, NULL, NULL, NULL }, // ARGB |
| { NULL, NULL, NULL, NULL, NULL }, // BGR |
| { NULL, NULL, I210AlphaToARGBMatrixFilter, I010AlphaToARGBMatrixFilter, NULL }, // BGRA |
| { NULL, NULL, NULL, NULL, NULL }, // ABGR |
| { NULL, NULL, NULL, NULL, NULL }, // RGB_565 |
| }, |
| // 12bpc |
| { |
| // { NONE, YUV444, YUV422, YUV420, YUV400 } // AVIF_RGB_FORMAT_ |
| { NULL, NULL, NULL, NULL, NULL }, // RGB |
| { NULL, NULL, NULL, NULL, NULL }, // RGBA |
| { NULL, NULL, NULL, NULL, NULL }, // ARGB |
| { NULL, NULL, NULL, NULL, NULL }, // BGR |
| { NULL, NULL, NULL, NULL, NULL }, // BGRA |
| { NULL, NULL, NULL, NULL, NULL }, // ABGR |
| { NULL, NULL, NULL, NULL, NULL }, // RGB_565 |
| }, |
| }; |
| |
| // Lookup table for YUV To RGB Matrix (4:4:4 or nearest-neighbor filter). First dimension is for the YUV bit depth. |
| static const YUVToRGBMatrixHighBitDepth lutYuvToRgbMatrixHighBitDepth[2][AVIF_RGB_FORMAT_COUNT][AVIF_PIXEL_FORMAT_COUNT] = { |
| // 10bpc |
| { |
| // { NONE, YUV444, YUV422, YUV420, YUV400 } // AVIF_RGB_FORMAT_ |
| { NULL, NULL, NULL, NULL, NULL }, // RGB |
| { NULL, I410ToARGBMatrix, I210ToARGBMatrix, I010ToARGBMatrix, NULL }, // RGBA |
| { NULL, NULL, NULL, NULL, NULL }, // ARGB |
| { NULL, NULL, NULL, NULL, NULL }, // BGR |
| { NULL, I410ToARGBMatrix, I210ToARGBMatrix, I010ToARGBMatrix, NULL }, // BGRA |
| { NULL, NULL, NULL, NULL, NULL }, // ABGR |
| { NULL, NULL, NULL, NULL, NULL }, // RGB_565 |
| }, |
| // 12bpc |
| { |
| // { NONE, YUV444, YUV422, YUV420, YUV400 } // AVIF_RGB_FORMAT_ |
| { NULL, NULL, NULL, NULL, NULL }, // RGB |
| { NULL, NULL, NULL, I012ToARGBMatrix, NULL }, // RGBA |
| { NULL, NULL, NULL, NULL, NULL }, // ARGB |
| { NULL, NULL, NULL, NULL, NULL }, // BGR |
| { NULL, NULL, NULL, I012ToARGBMatrix, NULL }, // BGRA |
| { NULL, NULL, NULL, NULL, NULL }, // ABGR |
| { NULL, NULL, NULL, NULL, NULL }, // RGB_565 |
| }, |
| }; |
| |
| // Lookup table for YUVA To RGB Matrix (4:4:4 or nearest-neighbor filter). First dimension is for the YUV bit depth. |
| static const YUVAToRGBMatrixHighBitDepth lutYuvaToRgbMatrixHighBitDepth[2][AVIF_RGB_FORMAT_COUNT][AVIF_PIXEL_FORMAT_COUNT] = { |
| // 10bpc |
| { |
| // { NONE, YUV444, YUV422, YUV420, YUV400 } // AVIF_RGB_FORMAT_ |
| { NULL, NULL, NULL, NULL, NULL }, // RGB |
| { NULL, I410AlphaToARGBMatrix, I210AlphaToARGBMatrix, I010AlphaToARGBMatrix, NULL }, // RGBA |
| { NULL, NULL, NULL, NULL, NULL }, // ARGB |
| { NULL, NULL, NULL, NULL, NULL }, // BGR |
| { NULL, I410AlphaToARGBMatrix, I210AlphaToARGBMatrix, I010AlphaToARGBMatrix, NULL }, // BGRA |
| { NULL, NULL, NULL, NULL, NULL }, // ABGR |
| { NULL, NULL, NULL, NULL, NULL }, // RGB_565 |
| }, |
| // 12bpc |
| { |
| // { NONE, YUV444, YUV422, YUV420, YUV400 } // AVIF_RGB_FORMAT_ |
| { NULL, NULL, NULL, NULL, NULL }, // RGB |
| { NULL, NULL, NULL, NULL, NULL }, // RGBA |
| { NULL, NULL, NULL, NULL, NULL }, // ARGB |
| { NULL, NULL, NULL, NULL, NULL }, // BGR |
| { NULL, NULL, NULL, NULL, NULL }, // BGRA |
| { NULL, NULL, NULL, NULL, NULL }, // ABGR |
| { NULL, NULL, NULL, NULL, NULL }, // RGB_565 |
| }, |
| }; |
| |
| memset(lcf, 0, sizeof(*lcf)); |
| assert(rgb->depth == 8); |
| if (yuvDepth > 8) { |
| assert(yuvDepth == 10 || yuvDepth == 12); |
| int depthIndex = (yuvDepth == 10) ? 0 : 1; |
| if (yuvFormat != AVIF_PIXEL_FORMAT_YUV444) { |
| if (alphaPreferred) { |
| lcf->yuvaToRgbMatrixFilterHighBitDepth = lutYuvaToRgbMatrixFilterHighBitDepth[depthIndex][rgb->format][yuvFormat]; |
| if (lcf->yuvaToRgbMatrixFilterHighBitDepth != NULL) { |
| return AVIF_TRUE; |
| } |
| } |
| lcf->yuvToRgbMatrixFilterHighBitDepth = lutYuvToRgbMatrixFilterHighBitDepth[depthIndex][rgb->format][yuvFormat]; |
| if (lcf->yuvToRgbMatrixFilterHighBitDepth != NULL) { |
| return AVIF_TRUE; |
| } |
| } |
| if (yuvFormat == AVIF_PIXEL_FORMAT_YUV444 || nearestNeighborFilterAllowed(rgb->chromaUpsampling)) { |
| if (alphaPreferred) { |
| lcf->yuvaToRgbMatrixHighBitDepth = lutYuvaToRgbMatrixHighBitDepth[depthIndex][rgb->format][yuvFormat]; |
| if (lcf->yuvaToRgbMatrixHighBitDepth != NULL) { |
| return AVIF_TRUE; |
| } |
| } |
| lcf->yuvToRgbMatrixHighBitDepth = lutYuvToRgbMatrixHighBitDepth[depthIndex][rgb->format][yuvFormat]; |
| if (lcf->yuvToRgbMatrixHighBitDepth != NULL) { |
| return AVIF_TRUE; |
| } |
| } |
| // Fallthrough is intentional. No high bitdepth libyuv function was found. Check if there is an 8-bit libyuv function which |
| // can used with a downshift. |
| } |
| if (yuvFormat == AVIF_PIXEL_FORMAT_YUV400) { |
| lcf->yuv400ToRgbMatrix = lutYuv400ToRgbMatrix[rgb->format]; |
| return lcf->yuv400ToRgbMatrix != NULL; |
| } |
| if (yuvFormat != AVIF_PIXEL_FORMAT_YUV444) { |
| if (alphaPreferred) { |
| lcf->yuvaToRgbMatrixFilter = lutYuvaToRgbMatrixFilter[rgb->format][yuvFormat]; |
| if (lcf->yuvaToRgbMatrixFilter != NULL) { |
| return AVIF_TRUE; |
| } |
| } |
| lcf->yuvToRgbMatrixFilter = lutYuvToRgbMatrixFilter[rgb->format][yuvFormat]; |
| if (lcf->yuvToRgbMatrixFilter != NULL) { |
| return AVIF_TRUE; |
| } |
| if (!nearestNeighborFilterAllowed(rgb->chromaUpsampling)) { |
| return AVIF_FALSE; |
| } |
| } |
| if (alphaPreferred) { |
| lcf->yuvaToRgbMatrix = lutYuvaToRgbMatrix[rgb->format][yuvFormat]; |
| if (lcf->yuvaToRgbMatrix != NULL) { |
| return AVIF_TRUE; |
| } |
| } |
| lcf->yuvToRgbMatrix = lutYuvToRgbMatrix[rgb->format][yuvFormat]; |
| return lcf->yuvToRgbMatrix != NULL; |
| } |
| |
| static void getLibYUVConstants(const avifImage * image, const struct YuvConstants ** matrixYUV, const struct YuvConstants ** matrixYVU) |
| { |
| // Allow the identity matrix to be used with YUV 4:0:0. Replace the identity matrix with |
| // MatrixCoefficients 6 (BT.601). |
| const avifBool yuv400WithIdentityMatrix = (image->yuvFormat == AVIF_PIXEL_FORMAT_YUV400) && |
| (image->matrixCoefficients == AVIF_MATRIX_COEFFICIENTS_IDENTITY); |
| const avifMatrixCoefficients matrixCoefficients = yuv400WithIdentityMatrix ? AVIF_MATRIX_COEFFICIENTS_BT601 : image->matrixCoefficients; |
| if (image->yuvRange == AVIF_RANGE_FULL) { |
| switch (matrixCoefficients) { |
| // BT.709 full range YuvConstants were added in libyuv version 1772. |
| // See https://chromium-review.googlesource.com/c/libyuv/libyuv/+/2646472. |
| case AVIF_MATRIX_COEFFICIENTS_BT709: |
| #if LIBYUV_VERSION >= 1772 |
| *matrixYUV = &kYuvF709Constants; |
| *matrixYVU = &kYvuF709Constants; |
| #endif |
| break; |
| case AVIF_MATRIX_COEFFICIENTS_BT470BG: |
| case AVIF_MATRIX_COEFFICIENTS_BT601: |
| case AVIF_MATRIX_COEFFICIENTS_UNSPECIFIED: |
| *matrixYUV = &kYuvJPEGConstants; |
| *matrixYVU = &kYvuJPEGConstants; |
| break; |
| // BT.2020 full range YuvConstants were added in libyuv version 1775. |
| // See https://chromium-review.googlesource.com/c/libyuv/libyuv/+/2678859. |
| case AVIF_MATRIX_COEFFICIENTS_BT2020_NCL: |
| #if LIBYUV_VERSION >= 1775 |
| *matrixYUV = &kYuvV2020Constants; |
| *matrixYVU = &kYvuV2020Constants; |
| #endif |
| break; |
| case AVIF_MATRIX_COEFFICIENTS_CHROMA_DERIVED_NCL: |
| switch (image->colorPrimaries) { |
| case AVIF_COLOR_PRIMARIES_BT709: |
| case AVIF_COLOR_PRIMARIES_UNSPECIFIED: |
| #if LIBYUV_VERSION >= 1772 |
| *matrixYUV = &kYuvF709Constants; |
| *matrixYVU = &kYvuF709Constants; |
| #endif |
| break; |
| case AVIF_COLOR_PRIMARIES_BT470BG: |
| case AVIF_COLOR_PRIMARIES_BT601: |
| *matrixYUV = &kYuvJPEGConstants; |
| *matrixYVU = &kYvuJPEGConstants; |
| break; |
| case AVIF_COLOR_PRIMARIES_BT2020: |
| #if LIBYUV_VERSION >= 1775 |
| *matrixYUV = &kYuvV2020Constants; |
| *matrixYVU = &kYvuV2020Constants; |
| #endif |
| break; |
| |
| case AVIF_COLOR_PRIMARIES_UNKNOWN: |
| case AVIF_COLOR_PRIMARIES_BT470M: |
| case AVIF_COLOR_PRIMARIES_SMPTE240: |
| case AVIF_COLOR_PRIMARIES_GENERIC_FILM: |
| case AVIF_COLOR_PRIMARIES_XYZ: |
| case AVIF_COLOR_PRIMARIES_SMPTE431: |
| case AVIF_COLOR_PRIMARIES_SMPTE432: |
| case AVIF_COLOR_PRIMARIES_EBU3213: |
| break; |
| } |
| break; |
| |
| case AVIF_MATRIX_COEFFICIENTS_IDENTITY: |
| case AVIF_MATRIX_COEFFICIENTS_FCC: |
| case AVIF_MATRIX_COEFFICIENTS_SMPTE240: |
| case AVIF_MATRIX_COEFFICIENTS_YCGCO: |
| case AVIF_MATRIX_COEFFICIENTS_BT2020_CL: |
| case AVIF_MATRIX_COEFFICIENTS_SMPTE2085: |
| case AVIF_MATRIX_COEFFICIENTS_CHROMA_DERIVED_CL: |
| case AVIF_MATRIX_COEFFICIENTS_ICTCP: |
| break; |
| } |
| } else { // image->yuvRange == AVIF_RANGE_LIMITED |
| switch (matrixCoefficients) { |
| case AVIF_MATRIX_COEFFICIENTS_BT709: |
| *matrixYUV = &kYuvH709Constants; |
| *matrixYVU = &kYvuH709Constants; |
| break; |
| case AVIF_MATRIX_COEFFICIENTS_BT470BG: |
| case AVIF_MATRIX_COEFFICIENTS_BT601: |
| case AVIF_MATRIX_COEFFICIENTS_UNSPECIFIED: |
| *matrixYUV = &kYuvI601Constants; |
| *matrixYVU = &kYvuI601Constants; |
| break; |
| case AVIF_MATRIX_COEFFICIENTS_BT2020_NCL: |
| *matrixYUV = &kYuv2020Constants; |
| *matrixYVU = &kYvu2020Constants; |
| break; |
| case AVIF_MATRIX_COEFFICIENTS_CHROMA_DERIVED_NCL: |
| switch (image->colorPrimaries) { |
| case AVIF_COLOR_PRIMARIES_BT709: |
| case AVIF_COLOR_PRIMARIES_UNSPECIFIED: |
| *matrixYUV = &kYuvH709Constants; |
| *matrixYVU = &kYvuH709Constants; |
| break; |
| case AVIF_COLOR_PRIMARIES_BT470BG: |
| case AVIF_COLOR_PRIMARIES_BT601: |
| *matrixYUV = &kYuvI601Constants; |
| *matrixYVU = &kYvuI601Constants; |
| break; |
| case AVIF_COLOR_PRIMARIES_BT2020: |
| *matrixYUV = &kYuv2020Constants; |
| *matrixYVU = &kYvu2020Constants; |
| break; |
| |
| case AVIF_COLOR_PRIMARIES_UNKNOWN: |
| case AVIF_COLOR_PRIMARIES_BT470M: |
| case AVIF_COLOR_PRIMARIES_SMPTE240: |
| case AVIF_COLOR_PRIMARIES_GENERIC_FILM: |
| case AVIF_COLOR_PRIMARIES_XYZ: |
| case AVIF_COLOR_PRIMARIES_SMPTE431: |
| case AVIF_COLOR_PRIMARIES_SMPTE432: |
| case AVIF_COLOR_PRIMARIES_EBU3213: |
| break; |
| } |
| break; |
| case AVIF_MATRIX_COEFFICIENTS_IDENTITY: |
| case AVIF_MATRIX_COEFFICIENTS_FCC: |
| case AVIF_MATRIX_COEFFICIENTS_SMPTE240: |
| case AVIF_MATRIX_COEFFICIENTS_YCGCO: |
| case AVIF_MATRIX_COEFFICIENTS_BT2020_CL: |
| case AVIF_MATRIX_COEFFICIENTS_SMPTE2085: |
| case AVIF_MATRIX_COEFFICIENTS_CHROMA_DERIVED_CL: |
| case AVIF_MATRIX_COEFFICIENTS_ICTCP: |
| break; |
| } |
| } |
| } |
| |
| static avifResult avifImageDownshiftTo8bpc(const avifImage * image, avifImage * image8, avifBool downshiftAlpha) |
| { |
| avifImageSetDefaults(image8); |
| avifImageCopyNoAlloc(image8, image); |
| image8->depth = 8; |
| // downshiftAlpha will be true only if the image has an alpha plane. So it is safe to pass AVIF_PLANES_ALL here in that case. |
| assert(!downshiftAlpha || image->alphaPlane); |
| AVIF_CHECKRES(avifImageAllocatePlanes(image8, downshiftAlpha ? AVIF_PLANES_ALL : AVIF_PLANES_YUV)); |
| // 16384 for 10-bit and 4096 for 12-bit. |
| const int scale = 1 << (24 - image->depth); |
| for (int plane = AVIF_CHAN_Y; plane <= (downshiftAlpha ? AVIF_CHAN_A : AVIF_CHAN_V); ++plane) { |
| const uint32_t planeWidth = avifImagePlaneWidth(image, plane); |
| if (planeWidth == 0) { |
| continue; |
| } |
| Convert16To8Plane((const uint16_t *)avifImagePlane(image, plane), |
| avifImagePlaneRowBytes(image, plane) / 2, |
| avifImagePlane(image8, plane), |
| avifImagePlaneRowBytes(image8, plane), |
| scale, |
| planeWidth, |
| avifImagePlaneHeight(image, plane)); |
| } |
| return AVIF_RESULT_OK; |
| } |
| |
| IGNORE_CFI_ICALL avifResult avifImageYUVToRGBLibYUV(const avifImage * image, avifRGBImage * rgb, avifBool reformatAlpha, avifBool * alphaReformattedWithLibYUV) |
| { |
| *alphaReformattedWithLibYUV = AVIF_FALSE; |
| if (rgb->depth != 8 || (image->depth != 8 && image->depth != 10 && image->depth != 12)) { |
| return AVIF_RESULT_NOT_IMPLEMENTED; |
| } |
| // Find the correct libyuv YuvConstants, based on range and CP/MC |
| const struct YuvConstants * matrixYUV = NULL; |
| const struct YuvConstants * matrixYVU = NULL; |
| getLibYUVConstants(image, &matrixYUV, &matrixYVU); |
| if (!matrixYVU) { |
| // No YuvConstants exist for the current image; use the built-in YUV conversion |
| return AVIF_RESULT_NOT_IMPLEMENTED; |
| } |
| |
| LibyuvConversionFunction lcf; |
| const avifBool alphaPreferred = reformatAlpha && image->alphaPlane && image->alphaRowBytes; |
| if (!getLibYUVConversionFunction(image->yuvFormat, image->depth, rgb, alphaPreferred, &lcf)) { |
| return AVIF_RESULT_NOT_IMPLEMENTED; |
| } |
| if (!image->alphaPlane || !image->alphaRowBytes) { |
| // If the image does not have an alpha plane, then libyuv always prefills the output RGB image with opaque alpha values. |
| *alphaReformattedWithLibYUV = AVIF_TRUE; |
| } |
| avifBool isYVU = lutIsYVU[rgb->format]; |
| const struct YuvConstants * matrix = isYVU ? matrixYVU : matrixYUV; |
| int libyuvResult = -1; |
| int uPlaneIndex = isYVU ? AVIF_CHAN_V : AVIF_CHAN_U; |
| int vPlaneIndex = isYVU ? AVIF_CHAN_U : AVIF_CHAN_V; |
| const enum FilterMode filter = |
| ((rgb->chromaUpsampling == AVIF_CHROMA_UPSAMPLING_FASTEST) || (rgb->chromaUpsampling == AVIF_CHROMA_UPSAMPLING_NEAREST)) |
| ? kFilterNone |
| : kFilterBilinear; |
| if (lcf.yuvToRgbMatrixFilterHighBitDepth != NULL) { |
| libyuvResult = lcf.yuvToRgbMatrixFilterHighBitDepth((const uint16_t *)image->yuvPlanes[AVIF_CHAN_Y], |
| image->yuvRowBytes[AVIF_CHAN_Y] / 2, |
| (const uint16_t *)image->yuvPlanes[uPlaneIndex], |
| image->yuvRowBytes[uPlaneIndex] / 2, |
| (const uint16_t *)image->yuvPlanes[vPlaneIndex], |
| image->yuvRowBytes[vPlaneIndex] / 2, |
| rgb->pixels, |
| rgb->rowBytes, |
| matrix, |
| image->width, |
| image->height, |
| filter); |
| } else if (lcf.yuvaToRgbMatrixFilterHighBitDepth != NULL) { |
| libyuvResult = lcf.yuvaToRgbMatrixFilterHighBitDepth((const uint16_t *)image->yuvPlanes[AVIF_CHAN_Y], |
| image->yuvRowBytes[AVIF_CHAN_Y] / 2, |
| (const uint16_t *)image->yuvPlanes[uPlaneIndex], |
| image->yuvRowBytes[uPlaneIndex] / 2, |
| (const uint16_t *)image->yuvPlanes[vPlaneIndex], |
| image->yuvRowBytes[vPlaneIndex] / 2, |
| (const uint16_t *)image->alphaPlane, |
| image->alphaRowBytes / 2, |
| rgb->pixels, |
| rgb->rowBytes, |
| matrix, |
| image->width, |
| image->height, |
| /*attenuate=*/0, |
| filter); |
| *alphaReformattedWithLibYUV = AVIF_TRUE; |
| } else if (lcf.yuvToRgbMatrixHighBitDepth != NULL) { |
| libyuvResult = lcf.yuvToRgbMatrixHighBitDepth((const uint16_t *)image->yuvPlanes[AVIF_CHAN_Y], |
| image->yuvRowBytes[AVIF_CHAN_Y] / 2, |
| (const uint16_t *)image->yuvPlanes[uPlaneIndex], |
| image->yuvRowBytes[uPlaneIndex] / 2, |
| (const uint16_t *)image->yuvPlanes[vPlaneIndex], |
| image->yuvRowBytes[vPlaneIndex] / 2, |
| rgb->pixels, |
| rgb->rowBytes, |
| matrix, |
| image->width, |
| image->height); |
| } else if (lcf.yuvaToRgbMatrixHighBitDepth != NULL) { |
| libyuvResult = lcf.yuvaToRgbMatrixHighBitDepth((const uint16_t *)image->yuvPlanes[AVIF_CHAN_Y], |
| image->yuvRowBytes[AVIF_CHAN_Y] / 2, |
| (const uint16_t *)image->yuvPlanes[uPlaneIndex], |
| image->yuvRowBytes[uPlaneIndex] / 2, |
| (const uint16_t *)image->yuvPlanes[vPlaneIndex], |
| image->yuvRowBytes[vPlaneIndex] / 2, |
| (const uint16_t *)image->alphaPlane, |
| image->alphaRowBytes / 2, |
| rgb->pixels, |
| rgb->rowBytes, |
| matrix, |
| image->width, |
| image->height, |
| /*attentuate=*/0); |
| *alphaReformattedWithLibYUV = AVIF_TRUE; |
| } else { |
| avifImage image8; |
| avifBool inputIsHighBitDepth = image->depth > 8; |
| if (inputIsHighBitDepth) { |
| const avifBool downshiftAlpha = (lcf.yuvaToRgbMatrixFilter != NULL || lcf.yuvaToRgbMatrix != NULL); |
| AVIF_CHECKRES(avifImageDownshiftTo8bpc(image, &image8, downshiftAlpha)); |
| image = &image8; |
| } |
| if (lcf.yuv400ToRgbMatrix != NULL) { |
| libyuvResult = lcf.yuv400ToRgbMatrix(image->yuvPlanes[AVIF_CHAN_Y], |
| image->yuvRowBytes[AVIF_CHAN_Y], |
| rgb->pixels, |
| rgb->rowBytes, |
| matrix, |
| image->width, |
| image->height); |
| } else if (lcf.yuvToRgbMatrixFilter != NULL) { |
| libyuvResult = lcf.yuvToRgbMatrixFilter(image->yuvPlanes[AVIF_CHAN_Y], |
| image->yuvRowBytes[AVIF_CHAN_Y], |
| image->yuvPlanes[uPlaneIndex], |
| image->yuvRowBytes[uPlaneIndex], |
| image->yuvPlanes[vPlaneIndex], |
| image->yuvRowBytes[vPlaneIndex], |
| rgb->pixels, |
| rgb->rowBytes, |
| matrix, |
| image->width, |
| image->height, |
| filter); |
| } else if (lcf.yuvaToRgbMatrixFilter != NULL) { |
| libyuvResult = lcf.yuvaToRgbMatrixFilter(image->yuvPlanes[AVIF_CHAN_Y], |
| image->yuvRowBytes[AVIF_CHAN_Y], |
| image->yuvPlanes[uPlaneIndex], |
| image->yuvRowBytes[uPlaneIndex], |
| image->yuvPlanes[vPlaneIndex], |
| image->yuvRowBytes[vPlaneIndex], |
| image->alphaPlane, |
| image->alphaRowBytes, |
| rgb->pixels, |
| rgb->rowBytes, |
| matrix, |
| image->width, |
| image->height, |
| /*attenuate=*/0, |
| filter); |
| *alphaReformattedWithLibYUV = AVIF_TRUE; |
| } else if (lcf.yuvToRgbMatrix != NULL) { |
| libyuvResult = lcf.yuvToRgbMatrix(image->yuvPlanes[AVIF_CHAN_Y], |
| image->yuvRowBytes[AVIF_CHAN_Y], |
| image->yuvPlanes[uPlaneIndex], |
| image->yuvRowBytes[uPlaneIndex], |
| image->yuvPlanes[vPlaneIndex], |
| image->yuvRowBytes[vPlaneIndex], |
| rgb->pixels, |
| rgb->rowBytes, |
| matrix, |
| image->width, |
| image->height); |
| } else if (lcf.yuvaToRgbMatrix != NULL) { |
| libyuvResult = lcf.yuvaToRgbMatrix(image->yuvPlanes[AVIF_CHAN_Y], |
| image->yuvRowBytes[AVIF_CHAN_Y], |
| image->yuvPlanes[uPlaneIndex], |
| image->yuvRowBytes[uPlaneIndex], |
| image->yuvPlanes[vPlaneIndex], |
| image->yuvRowBytes[vPlaneIndex], |
| image->alphaPlane, |
| image->alphaRowBytes, |
| rgb->pixels, |
| rgb->rowBytes, |
| matrix, |
| image->width, |
| image->height, |
| /*attenuate=*/0); |
| *alphaReformattedWithLibYUV = AVIF_TRUE; |
| } |
| if (inputIsHighBitDepth) { |
| avifImageFreePlanes(&image8, AVIF_PLANES_ALL); |
| image = NULL; |
| } |
| } |
| return (libyuvResult != 0) ? AVIF_RESULT_REFORMAT_FAILED : AVIF_RESULT_OK; |
| } |
| |
| //-------------------------------------------------------------------------------------------------- |
| |
| avifResult avifRGBImagePremultiplyAlphaLibYUV(avifRGBImage * rgb) |
| { |
| // See if the current settings can be accomplished with libyuv, and use it (if possible). |
| |
| if (rgb->depth != 8) { |
| return AVIF_RESULT_NOT_IMPLEMENTED; |
| } |
| |
| // libavif uses byte-order when describing pixel formats, such that the R in RGBA is the lowest address, |
| // similar to PNG. libyuv orders in word-order, so libavif's RGBA would be referred to in libyuv as ABGR. |
| |
| // Order of RGB doesn't matter here. |
| if (rgb->format == AVIF_RGB_FORMAT_RGBA || rgb->format == AVIF_RGB_FORMAT_BGRA) { |
| if (ARGBAttenuate(rgb->pixels, rgb->rowBytes, rgb->pixels, rgb->rowBytes, rgb->width, rgb->height) != 0) { |
| return AVIF_RESULT_REFORMAT_FAILED; |
| } |
| return AVIF_RESULT_OK; |
| } |
| |
| return AVIF_RESULT_NOT_IMPLEMENTED; |
| } |
| |
| avifResult avifRGBImageUnpremultiplyAlphaLibYUV(avifRGBImage * rgb) |
| { |
| // See if the current settings can be accomplished with libyuv, and use it (if possible). |
| |
| if (rgb->depth != 8) { |
| return AVIF_RESULT_NOT_IMPLEMENTED; |
| } |
| |
| // libavif uses byte-order when describing pixel formats, such that the R in RGBA is the lowest address, |
| // similar to PNG. libyuv orders in word-order, so libavif's RGBA would be referred to in libyuv as ABGR. |
| |
| if (rgb->format == AVIF_RGB_FORMAT_RGBA || rgb->format == AVIF_RGB_FORMAT_BGRA) { |
| if (ARGBUnattenuate(rgb->pixels, rgb->rowBytes, rgb->pixels, rgb->rowBytes, rgb->width, rgb->height) != 0) { |
| return AVIF_RESULT_REFORMAT_FAILED; |
| } |
| return AVIF_RESULT_OK; |
| } |
| |
| return AVIF_RESULT_NOT_IMPLEMENTED; |
| } |
| |
| avifResult avifRGBImageToF16LibYUV(avifRGBImage * rgb) |
| { |
| const float scale = 1.0f / ((1 << rgb->depth) - 1); |
| const int result = HalfFloatPlane((const uint16_t *)rgb->pixels, |
| rgb->rowBytes, |
| (uint16_t *)rgb->pixels, |
| rgb->rowBytes, |
| scale, |
| rgb->width * avifRGBFormatChannelCount(rgb->format), |
| rgb->height); |
| return (result == 0) ? AVIF_RESULT_OK : AVIF_RESULT_INVALID_ARGUMENT; |
| } |
| |
| unsigned int avifLibYUVVersion(void) |
| { |
| return (unsigned int)LIBYUV_VERSION; |
| } |
| |
| #endif |
