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n8.0.3
libswscale/format.c
592 строки
22 KB
Timo Rothenpieler
all: fix typos found by codespell
03 авг 2025, 14:48
03 авг 2025, 14:48
262d41c
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/* * Copyright (C) 2024 Niklas Haas * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "libavutil/avassert.h" #include "libavutil/hdr_dynamic_metadata.h" #include "libavutil/mastering_display_metadata.h" #include "format.h" typedef struct FormatEntry { uint8_t is_supported_in :1; uint8_t is_supported_out :1; uint8_t is_supported_endianness :1; } FormatEntry; /* Format support table for legacy swscale */ static const FormatEntry format_entries[] = { [AV_PIX_FMT_YUV420P] = { 1, 1 }, [AV_PIX_FMT_YUYV422] = { 1, 1 }, [AV_PIX_FMT_RGB24] = { 1, 1 }, [AV_PIX_FMT_BGR24] = { 1, 1 }, [AV_PIX_FMT_YUV422P] = { 1, 1 }, [AV_PIX_FMT_YUV444P] = { 1, 1 }, [AV_PIX_FMT_YUV410P] = { 1, 1 }, [AV_PIX_FMT_YUV411P] = { 1, 1 }, [AV_PIX_FMT_GRAY8] = { 1, 1 }, [AV_PIX_FMT_MONOWHITE] = { 1, 1 }, [AV_PIX_FMT_MONOBLACK] = { 1, 1 }, [AV_PIX_FMT_PAL8] = { 1, 0 }, [AV_PIX_FMT_YUVJ420P] = { 1, 1 }, [AV_PIX_FMT_YUVJ411P] = { 1, 1 }, [AV_PIX_FMT_YUVJ422P] = { 1, 1 }, [AV_PIX_FMT_YUVJ444P] = { 1, 1 }, [AV_PIX_FMT_YVYU422] = { 1, 1 }, [AV_PIX_FMT_UYVY422] = { 1, 1 }, [AV_PIX_FMT_UYYVYY411] = { 1, 0 }, [AV_PIX_FMT_BGR8] = { 1, 1 }, [AV_PIX_FMT_BGR4] = { 0, 1 }, [AV_PIX_FMT_BGR4_BYTE] = { 1, 1 }, [AV_PIX_FMT_RGB8] = { 1, 1 }, [AV_PIX_FMT_RGB4] = { 0, 1 }, [AV_PIX_FMT_RGB4_BYTE] = { 1, 1 }, [AV_PIX_FMT_NV12] = { 1, 1 }, [AV_PIX_FMT_NV21] = { 1, 1 }, [AV_PIX_FMT_ARGB] = { 1, 1 }, [AV_PIX_FMT_RGBA] = { 1, 1 }, [AV_PIX_FMT_ABGR] = { 1, 1 }, [AV_PIX_FMT_BGRA] = { 1, 1 }, [AV_PIX_FMT_0RGB] = { 1, 1 }, [AV_PIX_FMT_RGB0] = { 1, 1 }, [AV_PIX_FMT_0BGR] = { 1, 1 }, [AV_PIX_FMT_BGR0] = { 1, 1 }, [AV_PIX_FMT_GRAY9BE] = { 1, 1 }, [AV_PIX_FMT_GRAY9LE] = { 1, 1 }, [AV_PIX_FMT_GRAY10BE] = { 1, 1 }, [AV_PIX_FMT_GRAY10LE] = { 1, 1 }, [AV_PIX_FMT_GRAY12BE] = { 1, 1 }, [AV_PIX_FMT_GRAY12LE] = { 1, 1 }, [AV_PIX_FMT_GRAY14BE] = { 1, 1 }, [AV_PIX_FMT_GRAY14LE] = { 1, 1 }, [AV_PIX_FMT_GRAY16BE] = { 1, 1 }, [AV_PIX_FMT_GRAY16LE] = { 1, 1 }, [AV_PIX_FMT_YUV440P] = { 1, 1 }, [AV_PIX_FMT_YUVJ440P] = { 1, 1 }, [AV_PIX_FMT_YUV440P10LE] = { 1, 1 }, [AV_PIX_FMT_YUV440P10BE] = { 1, 1 }, [AV_PIX_FMT_YUV440P12LE] = { 1, 1 }, [AV_PIX_FMT_YUV440P12BE] = { 1, 1 }, [AV_PIX_FMT_YUVA420P] = { 1, 1 }, [AV_PIX_FMT_YUVA422P] = { 1, 1 }, [AV_PIX_FMT_YUVA444P] = { 1, 1 }, [AV_PIX_FMT_YUVA420P9BE] = { 1, 1 }, [AV_PIX_FMT_YUVA420P9LE] = { 1, 1 }, [AV_PIX_FMT_YUVA422P9BE] = { 1, 1 }, [AV_PIX_FMT_YUVA422P9LE] = { 1, 1 }, [AV_PIX_FMT_YUVA444P9BE] = { 1, 1 }, [AV_PIX_FMT_YUVA444P9LE] = { 1, 1 }, [AV_PIX_FMT_YUVA420P10BE] = { 1, 1 }, [AV_PIX_FMT_YUVA420P10LE] = { 1, 1 }, [AV_PIX_FMT_YUVA422P10BE] = { 1, 1 }, [AV_PIX_FMT_YUVA422P10LE] = { 1, 1 }, [AV_PIX_FMT_YUVA444P10BE] = { 1, 1 }, [AV_PIX_FMT_YUVA444P10LE] = { 1, 1 }, [AV_PIX_FMT_YUVA420P16BE] = { 1, 1 }, [AV_PIX_FMT_YUVA420P16LE] = { 1, 1 }, [AV_PIX_FMT_YUVA422P16BE] = { 1, 1 }, [AV_PIX_FMT_YUVA422P16LE] = { 1, 1 }, [AV_PIX_FMT_YUVA444P16BE] = { 1, 1 }, [AV_PIX_FMT_YUVA444P16LE] = { 1, 1 }, [AV_PIX_FMT_RGB48BE] = { 1, 1 }, [AV_PIX_FMT_RGB48LE] = { 1, 1 }, [AV_PIX_FMT_RGBA64BE] = { 1, 1, 1 }, [AV_PIX_FMT_RGBA64LE] = { 1, 1, 1 }, [AV_PIX_FMT_RGB565BE] = { 1, 1 }, [AV_PIX_FMT_RGB565LE] = { 1, 1 }, [AV_PIX_FMT_RGB555BE] = { 1, 1 }, [AV_PIX_FMT_RGB555LE] = { 1, 1 }, [AV_PIX_FMT_BGR565BE] = { 1, 1 }, [AV_PIX_FMT_BGR565LE] = { 1, 1 }, [AV_PIX_FMT_BGR555BE] = { 1, 1 }, [AV_PIX_FMT_BGR555LE] = { 1, 1 }, [AV_PIX_FMT_YUV420P16LE] = { 1, 1 }, [AV_PIX_FMT_YUV420P16BE] = { 1, 1 }, [AV_PIX_FMT_YUV422P16LE] = { 1, 1 }, [AV_PIX_FMT_YUV422P16BE] = { 1, 1 }, [AV_PIX_FMT_YUV444P16LE] = { 1, 1 }, [AV_PIX_FMT_YUV444P16BE] = { 1, 1 }, [AV_PIX_FMT_RGB444LE] = { 1, 1 }, [AV_PIX_FMT_RGB444BE] = { 1, 1 }, [AV_PIX_FMT_BGR444LE] = { 1, 1 }, [AV_PIX_FMT_BGR444BE] = { 1, 1 }, [AV_PIX_FMT_YA8] = { 1, 1 }, [AV_PIX_FMT_YA16BE] = { 1, 1 }, [AV_PIX_FMT_YA16LE] = { 1, 1 }, [AV_PIX_FMT_BGR48BE] = { 1, 1 }, [AV_PIX_FMT_BGR48LE] = { 1, 1 }, [AV_PIX_FMT_BGRA64BE] = { 1, 1, 1 }, [AV_PIX_FMT_BGRA64LE] = { 1, 1, 1 }, [AV_PIX_FMT_YUV420P9BE] = { 1, 1 }, [AV_PIX_FMT_YUV420P9LE] = { 1, 1 }, [AV_PIX_FMT_YUV420P10BE] = { 1, 1 }, [AV_PIX_FMT_YUV420P10LE] = { 1, 1 }, [AV_PIX_FMT_YUV420P12BE] = { 1, 1 }, [AV_PIX_FMT_YUV420P12LE] = { 1, 1 }, [AV_PIX_FMT_YUV420P14BE] = { 1, 1 }, [AV_PIX_FMT_YUV420P14LE] = { 1, 1 }, [AV_PIX_FMT_YUV422P9BE] = { 1, 1 }, [AV_PIX_FMT_YUV422P9LE] = { 1, 1 }, [AV_PIX_FMT_YUV422P10BE] = { 1, 1 }, [AV_PIX_FMT_YUV422P10LE] = { 1, 1 }, [AV_PIX_FMT_YUV422P12BE] = { 1, 1 }, [AV_PIX_FMT_YUV422P12LE] = { 1, 1 }, [AV_PIX_FMT_YUV422P14BE] = { 1, 1 }, [AV_PIX_FMT_YUV422P14LE] = { 1, 1 }, [AV_PIX_FMT_YUV444P9BE] = { 1, 1 }, [AV_PIX_FMT_YUV444P9LE] = { 1, 1 }, [AV_PIX_FMT_YUV444P10BE] = { 1, 1 }, [AV_PIX_FMT_YUV444P10LE] = { 1, 1 }, [AV_PIX_FMT_YUV444P12BE] = { 1, 1 }, [AV_PIX_FMT_YUV444P12LE] = { 1, 1 }, [AV_PIX_FMT_YUV444P14BE] = { 1, 1 }, [AV_PIX_FMT_YUV444P14LE] = { 1, 1 }, [AV_PIX_FMT_YUV444P10MSBBE] = { 1, 1 }, [AV_PIX_FMT_YUV444P10MSBLE] = { 1, 1 }, [AV_PIX_FMT_YUV444P12MSBBE] = { 1, 1 }, [AV_PIX_FMT_YUV444P12MSBLE] = { 1, 1 }, [AV_PIX_FMT_GBRP] = { 1, 1 }, [AV_PIX_FMT_GBRP9LE] = { 1, 1 }, [AV_PIX_FMT_GBRP9BE] = { 1, 1 }, [AV_PIX_FMT_GBRP10LE] = { 1, 1 }, [AV_PIX_FMT_GBRP10BE] = { 1, 1 }, [AV_PIX_FMT_GBRAP10LE] = { 1, 1 }, [AV_PIX_FMT_GBRAP10BE] = { 1, 1 }, [AV_PIX_FMT_GBRP10MSBLE] = { 1, 1 }, [AV_PIX_FMT_GBRP10MSBBE] = { 1, 1 }, [AV_PIX_FMT_GBRP12LE] = { 1, 1 }, [AV_PIX_FMT_GBRP12BE] = { 1, 1 }, [AV_PIX_FMT_GBRP12MSBLE] = { 1, 1 }, [AV_PIX_FMT_GBRP12MSBBE] = { 1, 1 }, [AV_PIX_FMT_GBRAP12LE] = { 1, 1 }, [AV_PIX_FMT_GBRAP12BE] = { 1, 1 }, [AV_PIX_FMT_GBRP14LE] = { 1, 1 }, [AV_PIX_FMT_GBRP14BE] = { 1, 1 }, [AV_PIX_FMT_GBRAP14LE] = { 1, 1 }, [AV_PIX_FMT_GBRAP14BE] = { 1, 1 }, [AV_PIX_FMT_GBRP16LE] = { 1, 1 }, [AV_PIX_FMT_GBRP16BE] = { 1, 1 }, [AV_PIX_FMT_GBRPF32LE] = { 1, 1 }, [AV_PIX_FMT_GBRPF32BE] = { 1, 1 }, [AV_PIX_FMT_GBRAPF32LE] = { 1, 1 }, [AV_PIX_FMT_GBRAPF32BE] = { 1, 1 }, [AV_PIX_FMT_GBRPF16LE] = { 1, 0 }, [AV_PIX_FMT_GBRPF16BE] = { 1, 0 }, [AV_PIX_FMT_GBRAPF16LE] = { 1, 0 }, [AV_PIX_FMT_GBRAPF16BE] = { 1, 0 }, [AV_PIX_FMT_GBRAP] = { 1, 1 }, [AV_PIX_FMT_GBRAP16LE] = { 1, 1 }, [AV_PIX_FMT_GBRAP16BE] = { 1, 1 }, [AV_PIX_FMT_BAYER_BGGR8] = { 1, 0 }, [AV_PIX_FMT_BAYER_RGGB8] = { 1, 0 }, [AV_PIX_FMT_BAYER_GBRG8] = { 1, 0 }, [AV_PIX_FMT_BAYER_GRBG8] = { 1, 0 }, [AV_PIX_FMT_BAYER_BGGR16LE] = { 1, 0 }, [AV_PIX_FMT_BAYER_BGGR16BE] = { 1, 0 }, [AV_PIX_FMT_BAYER_RGGB16LE] = { 1, 0 }, [AV_PIX_FMT_BAYER_RGGB16BE] = { 1, 0 }, [AV_PIX_FMT_BAYER_GBRG16LE] = { 1, 0 }, [AV_PIX_FMT_BAYER_GBRG16BE] = { 1, 0 }, [AV_PIX_FMT_BAYER_GRBG16LE] = { 1, 0 }, [AV_PIX_FMT_BAYER_GRBG16BE] = { 1, 0 }, [AV_PIX_FMT_XYZ12BE] = { 1, 1, 1 }, [AV_PIX_FMT_XYZ12LE] = { 1, 1, 1 }, [AV_PIX_FMT_AYUV64LE] = { 1, 1}, [AV_PIX_FMT_AYUV64BE] = { 1, 1 }, [AV_PIX_FMT_P010LE] = { 1, 1 }, [AV_PIX_FMT_P010BE] = { 1, 1 }, [AV_PIX_FMT_P012LE] = { 1, 1 }, [AV_PIX_FMT_P012BE] = { 1, 1 }, [AV_PIX_FMT_P016LE] = { 1, 1 }, [AV_PIX_FMT_P016BE] = { 1, 1 }, [AV_PIX_FMT_GRAYF32LE] = { 1, 1 }, [AV_PIX_FMT_GRAYF32BE] = { 1, 1 }, [AV_PIX_FMT_GRAYF16LE] = { 1, 0 }, [AV_PIX_FMT_GRAYF16BE] = { 1, 0 }, [AV_PIX_FMT_YAF32LE] = { 1, 0 }, [AV_PIX_FMT_YAF32BE] = { 1, 0 }, [AV_PIX_FMT_YAF16LE] = { 1, 0 }, [AV_PIX_FMT_YAF16BE] = { 1, 0 }, [AV_PIX_FMT_YUVA422P12BE] = { 1, 1 }, [AV_PIX_FMT_YUVA422P12LE] = { 1, 1 }, [AV_PIX_FMT_YUVA444P12BE] = { 1, 1 }, [AV_PIX_FMT_YUVA444P12LE] = { 1, 1 }, [AV_PIX_FMT_NV24] = { 1, 1 }, [AV_PIX_FMT_NV42] = { 1, 1 }, [AV_PIX_FMT_Y210LE] = { 1, 1 }, [AV_PIX_FMT_Y212LE] = { 1, 1 }, [AV_PIX_FMT_Y216LE] = { 1, 1 }, [AV_PIX_FMT_X2RGB10LE] = { 1, 1 }, [AV_PIX_FMT_X2BGR10LE] = { 1, 1 }, [AV_PIX_FMT_NV20BE] = { 1, 1 }, [AV_PIX_FMT_NV20LE] = { 1, 1 }, [AV_PIX_FMT_P210BE] = { 1, 1 }, [AV_PIX_FMT_P210LE] = { 1, 1 }, [AV_PIX_FMT_P212BE] = { 1, 1 }, [AV_PIX_FMT_P212LE] = { 1, 1 }, [AV_PIX_FMT_P410BE] = { 1, 1 }, [AV_PIX_FMT_P410LE] = { 1, 1 }, [AV_PIX_FMT_P412BE] = { 1, 1 }, [AV_PIX_FMT_P412LE] = { 1, 1 }, [AV_PIX_FMT_P216BE] = { 1, 1 }, [AV_PIX_FMT_P216LE] = { 1, 1 }, [AV_PIX_FMT_P416BE] = { 1, 1 }, [AV_PIX_FMT_P416LE] = { 1, 1 }, [AV_PIX_FMT_NV16] = { 1, 1 }, [AV_PIX_FMT_VUYA] = { 1, 1 }, [AV_PIX_FMT_VUYX] = { 1, 1 }, [AV_PIX_FMT_RGBAF16BE] = { 1, 0 }, [AV_PIX_FMT_RGBAF16LE] = { 1, 0 }, [AV_PIX_FMT_RGBF16BE] = { 1, 0 }, [AV_PIX_FMT_RGBF16LE] = { 1, 0 }, [AV_PIX_FMT_RGBF32BE] = { 1, 0 }, [AV_PIX_FMT_RGBF32LE] = { 1, 0 }, [AV_PIX_FMT_XV30LE] = { 1, 1 }, [AV_PIX_FMT_XV36LE] = { 1, 1 }, [AV_PIX_FMT_XV36BE] = { 1, 1 }, [AV_PIX_FMT_XV48LE] = { 1, 1 }, [AV_PIX_FMT_XV48BE] = { 1, 1 }, [AV_PIX_FMT_AYUV] = { 1, 1 }, [AV_PIX_FMT_UYVA] = { 1, 1 }, [AV_PIX_FMT_VYU444] = { 1, 1 }, [AV_PIX_FMT_V30XLE] = { 1, 1 }, }; int sws_isSupportedInput(enum AVPixelFormat pix_fmt) { return (unsigned)pix_fmt < FF_ARRAY_ELEMS(format_entries) ? format_entries[pix_fmt].is_supported_in : 0; } int sws_isSupportedOutput(enum AVPixelFormat pix_fmt) { return (unsigned)pix_fmt < FF_ARRAY_ELEMS(format_entries) ? format_entries[pix_fmt].is_supported_out : 0; } int sws_isSupportedEndiannessConversion(enum AVPixelFormat pix_fmt) { return (unsigned)pix_fmt < FF_ARRAY_ELEMS(format_entries) ? format_entries[pix_fmt].is_supported_endianness : 0; } /** * This function also sanitizes and strips the input data, removing irrelevant * fields for certain formats. */ SwsFormat ff_fmt_from_frame(const AVFrame *frame, int field) { const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format); const AVColorPrimariesDesc *primaries; AVFrameSideData *sd; SwsFormat fmt = { .width = frame->width, .height = frame->height, .format = frame->format, .range = frame->color_range, .csp = frame->colorspace, .loc = frame->chroma_location, .desc = desc, .color = { .prim = frame->color_primaries, .trc = frame->color_trc, }, }; av_assert1(fmt.width > 0); av_assert1(fmt.height > 0); av_assert1(fmt.format != AV_PIX_FMT_NONE); av_assert0(desc); if (desc->flags & (AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_PAL | AV_PIX_FMT_FLAG_BAYER)) { /* RGB-like family */ fmt.csp = AVCOL_SPC_RGB; fmt.range = AVCOL_RANGE_JPEG; } else if (desc->flags & AV_PIX_FMT_FLAG_XYZ) { fmt.csp = AVCOL_SPC_UNSPECIFIED; fmt.color = (SwsColor) { .prim = AVCOL_PRI_BT709, /* swscale currently hard-codes this XYZ matrix */ .trc = AVCOL_TRC_SMPTE428, }; } else if (desc->nb_components < 3) { /* Grayscale formats */ fmt.color.prim = AVCOL_PRI_UNSPECIFIED; fmt.csp = AVCOL_SPC_UNSPECIFIED; if (desc->flags & AV_PIX_FMT_FLAG_FLOAT) fmt.range = AVCOL_RANGE_UNSPECIFIED; else fmt.range = AVCOL_RANGE_JPEG; // FIXME: this restriction should be lifted } switch (frame->format) { case AV_PIX_FMT_YUVJ420P: case AV_PIX_FMT_YUVJ411P: case AV_PIX_FMT_YUVJ422P: case AV_PIX_FMT_YUVJ444P: case AV_PIX_FMT_YUVJ440P: fmt.range = AVCOL_RANGE_JPEG; break; } if (!desc->log2_chroma_w && !desc->log2_chroma_h) fmt.loc = AVCHROMA_LOC_UNSPECIFIED; if (frame->flags & AV_FRAME_FLAG_INTERLACED) { fmt.height = (fmt.height + (field == FIELD_TOP)) >> 1; fmt.interlaced = 1; } /* Set luminance and gamut information */ fmt.color.min_luma = av_make_q(0, 1); switch (fmt.color.trc) { case AVCOL_TRC_SMPTE2084: fmt.color.max_luma = av_make_q(10000, 1); break; case AVCOL_TRC_ARIB_STD_B67: fmt.color.max_luma = av_make_q( 1000, 1); break; /* HLG reference display */ default: fmt.color.max_luma = av_make_q( 203, 1); break; /* SDR reference brightness */ } primaries = av_csp_primaries_desc_from_id(fmt.color.prim); if (primaries) fmt.color.gamut = primaries->prim; if ((sd = av_frame_get_side_data(frame, AV_FRAME_DATA_MASTERING_DISPLAY_METADATA))) { const AVMasteringDisplayMetadata *mdm = (const AVMasteringDisplayMetadata *) sd->data; if (mdm->has_luminance) { fmt.color.min_luma = mdm->min_luminance; fmt.color.max_luma = mdm->max_luminance; } if (mdm->has_primaries) { /* Ignore mastering display white point as it has no bearance on * the underlying content */ fmt.color.gamut.r.x = mdm->display_primaries[0][0]; fmt.color.gamut.r.y = mdm->display_primaries[0][1]; fmt.color.gamut.g.x = mdm->display_primaries[1][0]; fmt.color.gamut.g.y = mdm->display_primaries[1][1]; fmt.color.gamut.b.x = mdm->display_primaries[2][0]; fmt.color.gamut.b.y = mdm->display_primaries[2][1]; } } if ((sd = av_frame_get_side_data(frame, AV_FRAME_DATA_DYNAMIC_HDR_PLUS))) { const AVDynamicHDRPlus *dhp = (const AVDynamicHDRPlus *) sd->data; const AVHDRPlusColorTransformParams *pars = &dhp->params[0]; const AVRational nits = av_make_q(10000, 1); AVRational maxrgb = pars->maxscl[0]; if (!dhp->num_windows || dhp->application_version > 1) goto skip_hdr10; /* Maximum of MaxSCL components */ if (av_cmp_q(pars->maxscl[1], maxrgb) > 0) maxrgb = pars->maxscl[1]; if (av_cmp_q(pars->maxscl[2], maxrgb) > 0) maxrgb = pars->maxscl[2]; if (maxrgb.num > 0) { /* Estimate true luminance from MaxSCL */ const AVLumaCoefficients *luma = av_csp_luma_coeffs_from_avcsp(fmt.csp); if (!luma) goto skip_hdr10; fmt.color.frame_peak = av_add_q(av_mul_q(luma->cr, pars->maxscl[0]), av_add_q(av_mul_q(luma->cg, pars->maxscl[1]), av_mul_q(luma->cb, pars->maxscl[2]))); /* Scale the scene average brightness by the ratio between the * maximum luminance and the MaxRGB values */ fmt.color.frame_avg = av_mul_q(pars->average_maxrgb, av_div_q(fmt.color.frame_peak, maxrgb)); } else { /** * Calculate largest value from histogram to use as fallback for * clips with missing MaxSCL information. Note that this may end * up picking the "reserved" value at the 5% percentile, which in * practice appears to track the brightest pixel in the scene. */ for (int i = 0; i < pars->num_distribution_maxrgb_percentiles; i++) { const AVRational pct = pars->distribution_maxrgb[i].percentile; if (av_cmp_q(pct, maxrgb) > 0) maxrgb = pct; fmt.color.frame_peak = maxrgb; fmt.color.frame_avg = pars->average_maxrgb; } } /* Rescale to nits */ fmt.color.frame_peak = av_mul_q(nits, fmt.color.frame_peak); fmt.color.frame_avg = av_mul_q(nits, fmt.color.frame_avg); } skip_hdr10: /* PQ is always scaled down to absolute zero, so ignore mastering metadata */ if (fmt.color.trc == AVCOL_TRC_SMPTE2084) fmt.color.min_luma = av_make_q(0, 1); return fmt; } static int infer_prim_ref(SwsColor *csp, const SwsColor *ref) { if (csp->prim != AVCOL_PRI_UNSPECIFIED) return 0; /* Reuse the reference gamut only for "safe", similar primaries */ switch (ref->prim) { case AVCOL_PRI_BT709: case AVCOL_PRI_BT470M: case AVCOL_PRI_BT470BG: case AVCOL_PRI_SMPTE170M: case AVCOL_PRI_SMPTE240M: csp->prim = ref->prim; csp->gamut = ref->gamut; break; default: csp->prim = AVCOL_PRI_BT709; csp->gamut = av_csp_primaries_desc_from_id(csp->prim)->prim; break; } return 1; } static int infer_trc_ref(SwsColor *csp, const SwsColor *ref) { if (csp->trc != AVCOL_TRC_UNSPECIFIED) return 0; /* Pick a suitable SDR transfer function, to try and minimize conversions */ switch (ref->trc) { case AVCOL_TRC_UNSPECIFIED: /* HDR curves, never default to these */ case AVCOL_TRC_SMPTE2084: case AVCOL_TRC_ARIB_STD_B67: csp->trc = AVCOL_TRC_BT709; csp->min_luma = av_make_q(0, 1); csp->max_luma = av_make_q(203, 1); break; default: csp->trc = ref->trc; csp->min_luma = ref->min_luma; csp->max_luma = ref->max_luma; break; } return 1; } bool ff_infer_colors(SwsColor *src, SwsColor *dst) { int incomplete = 0; incomplete |= infer_prim_ref(dst, src); incomplete |= infer_prim_ref(src, dst); av_assert0(src->prim != AVCOL_PRI_UNSPECIFIED); av_assert0(dst->prim != AVCOL_PRI_UNSPECIFIED); incomplete |= infer_trc_ref(dst, src); incomplete |= infer_trc_ref(src, dst); av_assert0(src->trc != AVCOL_TRC_UNSPECIFIED); av_assert0(dst->trc != AVCOL_TRC_UNSPECIFIED); return incomplete; } int sws_test_format(enum AVPixelFormat format, int output) { return output ? sws_isSupportedOutput(format) : sws_isSupportedInput(format); } int sws_test_colorspace(enum AVColorSpace csp, int output) { switch (csp) { case AVCOL_SPC_UNSPECIFIED: case AVCOL_SPC_RGB: case AVCOL_SPC_BT709: case AVCOL_SPC_BT470BG: case AVCOL_SPC_SMPTE170M: case AVCOL_SPC_FCC: case AVCOL_SPC_SMPTE240M: case AVCOL_SPC_BT2020_NCL: return 1; default: return 0; } } int sws_test_primaries(enum AVColorPrimaries prim, int output) { return prim > AVCOL_PRI_RESERVED0 && prim < AVCOL_PRI_NB && prim != AVCOL_PRI_RESERVED; } int sws_test_transfer(enum AVColorTransferCharacteristic trc, int output) { av_csp_eotf_function eotf = output ? av_csp_itu_eotf_inv(trc) : av_csp_itu_eotf(trc); return trc == AVCOL_TRC_UNSPECIFIED || eotf != NULL; } static int test_range(enum AVColorRange range) { return (unsigned)range < AVCOL_RANGE_NB; } static int test_loc(enum AVChromaLocation loc) { return (unsigned)loc < AVCHROMA_LOC_NB; } int ff_test_fmt(const SwsFormat *fmt, int output) { return fmt->width > 0 && fmt->height > 0 && sws_test_format (fmt->format, output) && sws_test_colorspace(fmt->csp, output) && sws_test_primaries (fmt->color.prim, output) && sws_test_transfer (fmt->color.trc, output) && test_range (fmt->range) && test_loc (fmt->loc); } int sws_test_frame(const AVFrame *frame, int output) { for (int field = 0; field < 2; field++) { const SwsFormat fmt = ff_fmt_from_frame(frame, field); if (!ff_test_fmt(&fmt, output)) return 0; if (!fmt.interlaced) break; } return 1; } int sws_is_noop(const AVFrame *dst, const AVFrame *src) { for (int field = 0; field < 2; field++) { SwsFormat dst_fmt = ff_fmt_from_frame(dst, field); SwsFormat src_fmt = ff_fmt_from_frame(src, field); if (!ff_fmt_equal(&dst_fmt, &src_fmt)) return 0; if (!dst_fmt.interlaced) break; } return 1; }