/* * pixel format descriptor * Copyright (c) 2009 Michael Niedermayer <michaelni@gmx.at> * * This file is part of Libav. * * Libav 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. * * Libav 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 Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include <stdio.h> #include <string.h> #include "common.h" #include "pixfmt.h" #include "pixdesc.h" #include "intreadwrite.h" void av_read_image_line(uint16_t *dst, const uint8_t *data[4], const int linesize[4], const AVPixFmtDescriptor *desc, int x, int y, int c, int w, int read_pal_component) { AVComponentDescriptor comp = desc->comp[c]; int plane = comp.plane; int depth = comp.depth_minus1 + 1; int mask = (1 << depth) - 1; int shift = comp.shift; int step = comp.step_minus1 + 1; int flags = desc->flags; if (flags & PIX_FMT_BITSTREAM) { int skip = x * step + comp.offset_plus1 - 1; const uint8_t *p = data[plane] + y * linesize[plane] + (skip >> 3); int shift = 8 - depth - (skip & 7); while (w--) { int val = (*p >> shift) & mask; if (read_pal_component) val = data[1][4*val + c]; shift -= step; p -= shift >> 3; shift &= 7; *dst++ = val; } } else { const uint8_t *p = data[plane] + y * linesize[plane] + x * step + comp.offset_plus1 - 1; int is_8bit = shift + depth <= 8; if (is_8bit) p += !!(flags & PIX_FMT_BE); while (w--) { int val = is_8bit ? *p : flags & PIX_FMT_BE ? AV_RB16(p) : AV_RL16(p); val = (val >> shift) & mask; if (read_pal_component) val = data[1][4 * val + c]; p += step; *dst++ = val; } } } void av_write_image_line(const uint16_t *src, uint8_t *data[4], const int linesize[4], const AVPixFmtDescriptor *desc, int x, int y, int c, int w) { AVComponentDescriptor comp = desc->comp[c]; int plane = comp.plane; int depth = comp.depth_minus1 + 1; int step = comp.step_minus1 + 1; int flags = desc->flags; if (flags & PIX_FMT_BITSTREAM) { int skip = x * step + comp.offset_plus1 - 1; uint8_t *p = data[plane] + y * linesize[plane] + (skip >> 3); int shift = 8 - depth - (skip & 7); while (w--) { *p |= *src++ << shift; shift -= step; p -= shift >> 3; shift &= 7; } } else { int shift = comp.shift; uint8_t *p = data[plane] + y * linesize[plane] + x * step + comp.offset_plus1 - 1; if (shift + depth <= 8) { p += !!(flags & PIX_FMT_BE); while (w--) { *p |= (*src++ << shift); p += step; } } else { while (w--) { if (flags & PIX_FMT_BE) { uint16_t val = AV_RB16(p) | (*src++ << shift); AV_WB16(p, val); } else { uint16_t val = AV_RL16(p) | (*src++ << shift); AV_WL16(p, val); } p += step; } } } } #if !FF_API_PIX_FMT_DESC static #endif const AVPixFmtDescriptor av_pix_fmt_descriptors[AV_PIX_FMT_NB] = { [AV_PIX_FMT_YUV420P] = { .name = "yuv420p", .nb_components = 3, .log2_chroma_w = 1, .log2_chroma_h = 1, .comp = { { 0, 0, 1, 0, 7 }, /* Y */ { 1, 0, 1, 0, 7 }, /* U */ { 2, 0, 1, 0, 7 }, /* V */ }, .flags = PIX_FMT_PLANAR, }, [AV_PIX_FMT_YUYV422] = { .name = "yuyv422", .nb_components = 3, .log2_chroma_w = 1, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 7 }, /* Y */ { 0, 3, 2, 0, 7 }, /* U */ { 0, 3, 4, 0, 7 }, /* V */ }, }, [AV_PIX_FMT_RGB24] = { .name = "rgb24", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 2, 1, 0, 7 }, /* R */ { 0, 2, 2, 0, 7 }, /* G */ { 0, 2, 3, 0, 7 }, /* B */ }, .flags = PIX_FMT_RGB, }, [AV_PIX_FMT_BGR24] = { .name = "bgr24", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 2, 1, 0, 7 }, /* B */ { 0, 2, 2, 0, 7 }, /* G */ { 0, 2, 3, 0, 7 }, /* R */ }, .flags = PIX_FMT_RGB, }, [AV_PIX_FMT_YUV422P] = { .name = "yuv422p", .nb_components = 3, .log2_chroma_w = 1, .log2_chroma_h = 0, .comp = { { 0, 0, 1, 0, 7 }, /* Y */ { 1, 0, 1, 0, 7 }, /* U */ { 2, 0, 1, 0, 7 }, /* V */ }, .flags = PIX_FMT_PLANAR, }, [AV_PIX_FMT_YUV444P] = { .name = "yuv444p", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 0, 1, 0, 7 }, /* Y */ { 1, 0, 1, 0, 7 }, /* U */ { 2, 0, 1, 0, 7 }, /* V */ }, .flags = PIX_FMT_PLANAR, }, [AV_PIX_FMT_YUV410P] = { .name = "yuv410p", .nb_components = 3, .log2_chroma_w = 2, .log2_chroma_h = 2, .comp = { { 0, 0, 1, 0, 7 }, /* Y */ { 1, 0, 1, 0, 7 }, /* U */ { 2, 0, 1, 0, 7 }, /* V */ }, .flags = PIX_FMT_PLANAR, }, [AV_PIX_FMT_YUV411P] = { .name = "yuv411p", .nb_components = 3, .log2_chroma_w = 2, .log2_chroma_h = 0, .comp = { { 0, 0, 1, 0, 7 }, /* Y */ { 1, 0, 1, 0, 7 }, /* U */ { 2, 0, 1, 0, 7 }, /* V */ }, .flags = PIX_FMT_PLANAR, }, [AV_PIX_FMT_GRAY8] = { .name = "gray", .nb_components = 1, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 0, 1, 0, 7 }, /* Y */ }, }, [AV_PIX_FMT_MONOWHITE] = { .name = "monow", .nb_components = 1, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 0, 1, 0, 0 }, /* Y */ }, .flags = PIX_FMT_BITSTREAM, }, [AV_PIX_FMT_MONOBLACK] = { .name = "monob", .nb_components = 1, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 0, 1, 7, 0 }, /* Y */ }, .flags = PIX_FMT_BITSTREAM, }, [AV_PIX_FMT_PAL8] = { .name = "pal8", .nb_components = 1, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 0, 1, 0, 7 }, }, .flags = PIX_FMT_PAL, }, [AV_PIX_FMT_YUVJ420P] = { .name = "yuvj420p", .nb_components = 3, .log2_chroma_w = 1, .log2_chroma_h = 1, .comp = { { 0, 0, 1, 0, 7 }, /* Y */ { 1, 0, 1, 0, 7 }, /* U */ { 2, 0, 1, 0, 7 }, /* V */ }, .flags = PIX_FMT_PLANAR, }, [AV_PIX_FMT_YUVJ422P] = { .name = "yuvj422p", .nb_components = 3, .log2_chroma_w = 1, .log2_chroma_h = 0, .comp = { { 0, 0, 1, 0, 7 }, /* Y */ { 1, 0, 1, 0, 7 }, /* U */ { 2, 0, 1, 0, 7 }, /* V */ }, .flags = PIX_FMT_PLANAR, }, [AV_PIX_FMT_YUVJ444P] = { .name = "yuvj444p", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { {0, 0, 1, 0, 7}, /* Y */ {1, 0, 1, 0, 7}, /* U */ {2, 0, 1, 0, 7}, /* V */ }, .flags = PIX_FMT_PLANAR, }, [AV_PIX_FMT_XVMC_MPEG2_MC] = { .name = "xvmcmc", .flags = PIX_FMT_HWACCEL, }, [AV_PIX_FMT_XVMC_MPEG2_IDCT] = { .name = "xvmcidct", .flags = PIX_FMT_HWACCEL, }, [AV_PIX_FMT_UYVY422] = { .name = "uyvy422", .nb_components = 3, .log2_chroma_w = 1, .log2_chroma_h = 0, .comp = { { 0, 1, 2, 0, 7 }, /* Y */ { 0, 3, 1, 0, 7 }, /* U */ { 0, 3, 3, 0, 7 }, /* V */ }, }, [AV_PIX_FMT_UYYVYY411] = { .name = "uyyvyy411", .nb_components = 3, .log2_chroma_w = 2, .log2_chroma_h = 0, .comp = { { 0, 3, 2, 0, 7 }, /* Y */ { 0, 5, 1, 0, 7 }, /* U */ { 0, 5, 4, 0, 7 }, /* V */ }, }, [AV_PIX_FMT_BGR8] = { .name = "bgr8", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 0, 1, 6, 1 }, /* B */ { 0, 0, 1, 3, 2 }, /* G */ { 0, 0, 1, 0, 2 }, /* R */ }, .flags = PIX_FMT_RGB | PIX_FMT_PSEUDOPAL, }, [AV_PIX_FMT_BGR4] = { .name = "bgr4", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 3, 1, 0, 0 }, /* B */ { 0, 3, 2, 0, 1 }, /* G */ { 0, 3, 4, 0, 0 }, /* R */ }, .flags = PIX_FMT_BITSTREAM | PIX_FMT_RGB, }, [AV_PIX_FMT_BGR4_BYTE] = { .name = "bgr4_byte", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 0, 1, 3, 0 }, /* B */ { 0, 0, 1, 1, 1 }, /* G */ { 0, 0, 1, 0, 0 }, /* R */ }, .flags = PIX_FMT_RGB | PIX_FMT_PSEUDOPAL, }, [AV_PIX_FMT_RGB8] = { .name = "rgb8", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 0, 1, 6, 1 }, /* R */ { 0, 0, 1, 3, 2 }, /* G */ { 0, 0, 1, 0, 2 }, /* B */ }, .flags = PIX_FMT_RGB | PIX_FMT_PSEUDOPAL, }, [AV_PIX_FMT_RGB4] = { .name = "rgb4", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 3, 1, 0, 0 }, /* R */ { 0, 3, 2, 0, 1 }, /* G */ { 0, 3, 4, 0, 0 }, /* B */ }, .flags = PIX_FMT_BITSTREAM | PIX_FMT_RGB, }, [AV_PIX_FMT_RGB4_BYTE] = { .name = "rgb4_byte", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 0, 1, 3, 0 }, /* R */ { 0, 0, 1, 1, 1 }, /* G */ { 0, 0, 1, 0, 0 }, /* B */ }, .flags = PIX_FMT_RGB | PIX_FMT_PSEUDOPAL, }, [AV_PIX_FMT_NV12] = { .name = "nv12", .nb_components = 3, .log2_chroma_w = 1, .log2_chroma_h = 1, .comp = { { 0, 0, 1, 0, 7 }, /* Y */ { 1, 1, 1, 0, 7 }, /* U */ { 1, 1, 2, 0, 7 }, /* V */ }, .flags = PIX_FMT_PLANAR, }, [AV_PIX_FMT_NV21] = { .name = "nv21", .nb_components = 3, .log2_chroma_w = 1, .log2_chroma_h = 1, .comp = { { 0, 0, 1, 0, 7 }, /* Y */ { 1, 1, 1, 0, 7 }, /* V */ { 1, 1, 2, 0, 7 }, /* U */ }, .flags = PIX_FMT_PLANAR, }, [AV_PIX_FMT_ARGB] = { .name = "argb", .nb_components = 4, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 3, 1, 0, 7 }, /* A */ { 0, 3, 2, 0, 7 }, /* R */ { 0, 3, 3, 0, 7 }, /* G */ { 0, 3, 4, 0, 7 }, /* B */ }, .flags = PIX_FMT_RGB | PIX_FMT_ALPHA, }, [AV_PIX_FMT_RGBA] = { .name = "rgba", .nb_components = 4, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 3, 1, 0, 7 }, /* R */ { 0, 3, 2, 0, 7 }, /* G */ { 0, 3, 3, 0, 7 }, /* B */ { 0, 3, 4, 0, 7 }, /* A */ }, .flags = PIX_FMT_RGB | PIX_FMT_ALPHA, }, [AV_PIX_FMT_ABGR] = { .name = "abgr", .nb_components = 4, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 3, 1, 0, 7 }, /* A */ { 0, 3, 2, 0, 7 }, /* B */ { 0, 3, 3, 0, 7 }, /* G */ { 0, 3, 4, 0, 7 }, /* R */ }, .flags = PIX_FMT_RGB | PIX_FMT_ALPHA, }, [AV_PIX_FMT_BGRA] = { .name = "bgra", .nb_components = 4, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 3, 1, 0, 7 }, /* B */ { 0, 3, 2, 0, 7 }, /* G */ { 0, 3, 3, 0, 7 }, /* R */ { 0, 3, 4, 0, 7 }, /* A */ }, .flags = PIX_FMT_RGB | PIX_FMT_ALPHA, }, [AV_PIX_FMT_GRAY16BE] = { .name = "gray16be", .nb_components = 1, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 15 }, /* Y */ }, .flags = PIX_FMT_BE, }, [AV_PIX_FMT_GRAY16LE] = { .name = "gray16le", .nb_components = 1, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 15 }, /* Y */ }, }, [AV_PIX_FMT_YUV440P] = { .name = "yuv440p", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 1, .comp = { { 0, 0, 1, 0, 7 }, /* Y */ { 1, 0, 1, 0, 7 }, /* U */ { 2, 0, 1, 0, 7 }, /* V */ }, .flags = PIX_FMT_PLANAR, }, [AV_PIX_FMT_YUVJ440P] = { .name = "yuvj440p", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 1, .comp = { { 0, 0, 1, 0, 7 }, /* Y */ { 1, 0, 1, 0, 7 }, /* U */ { 2, 0, 1, 0, 7 }, /* V */ }, .flags = PIX_FMT_PLANAR, }, [AV_PIX_FMT_YUVA420P] = { .name = "yuva420p", .nb_components = 4, .log2_chroma_w = 1, .log2_chroma_h = 1, .comp = { { 0, 0, 1, 0, 7 }, /* Y */ { 1, 0, 1, 0, 7 }, /* U */ { 2, 0, 1, 0, 7 }, /* V */ { 3, 0, 1, 0, 7 }, /* A */ }, .flags = PIX_FMT_PLANAR | PIX_FMT_ALPHA, }, [AV_PIX_FMT_YUVA422P] = { .name = "yuva422p", .nb_components = 4, .log2_chroma_w = 1, .log2_chroma_h = 0, .comp = { { 0, 0, 1, 0, 7 }, /* Y */ { 1, 0, 1, 0, 7 }, /* U */ { 2, 0, 1, 0, 7 }, /* V */ { 3, 0, 1, 0, 7 }, /* A */ }, .flags = PIX_FMT_PLANAR | PIX_FMT_ALPHA, }, [AV_PIX_FMT_YUVA444P] = { .name = "yuva444p", .nb_components = 4, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 0, 1, 0, 7 }, /* Y */ { 1, 0, 1, 0, 7 }, /* U */ { 2, 0, 1, 0, 7 }, /* V */ { 3, 0, 1, 0, 7 }, /* A */ }, .flags = PIX_FMT_PLANAR | PIX_FMT_ALPHA, }, [AV_PIX_FMT_YUVA420P9BE] = { .name = "yuva420p9be", .nb_components = 4, .log2_chroma_w = 1, .log2_chroma_h = 1, .comp = { { 0, 1, 1, 0, 8 }, /* Y */ { 1, 1, 1, 0, 8 }, /* U */ { 2, 1, 1, 0, 8 }, /* V */ { 3, 1, 1, 0, 8 }, /* A */ }, .flags = PIX_FMT_BE | PIX_FMT_PLANAR, }, [AV_PIX_FMT_YUVA420P9LE] = { .name = "yuva420p9le", .nb_components = 4, .log2_chroma_w = 1, .log2_chroma_h = 1, .comp = { { 0, 1, 1, 0, 8 }, /* Y */ { 1, 1, 1, 0, 8 }, /* U */ { 2, 1, 1, 0, 8 }, /* V */ { 3, 1, 1, 0, 8 }, /* A */ }, .flags = PIX_FMT_PLANAR | PIX_FMT_ALPHA, }, [AV_PIX_FMT_YUVA422P9BE] = { .name = "yuva422p9be", .nb_components = 4, .log2_chroma_w = 1, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 8 }, /* Y */ { 1, 1, 1, 0, 8 }, /* U */ { 2, 1, 1, 0, 8 }, /* V */ { 3, 1, 1, 0, 8 }, /* A */ }, .flags = PIX_FMT_BE | PIX_FMT_PLANAR | PIX_FMT_ALPHA, }, [AV_PIX_FMT_YUVA422P9LE] = { .name = "yuva422p9le", .nb_components = 4, .log2_chroma_w = 1, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 8 }, /* Y */ { 1, 1, 1, 0, 8 }, /* U */ { 2, 1, 1, 0, 8 }, /* V */ { 3, 1, 1, 0, 8 }, /* A */ }, .flags = PIX_FMT_PLANAR | PIX_FMT_ALPHA, }, [AV_PIX_FMT_YUVA444P9BE] = { .name = "yuva444p9be", .nb_components = 4, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 8 }, /* Y */ { 1, 1, 1, 0, 8 }, /* U */ { 2, 1, 1, 0, 8 }, /* V */ { 3, 1, 1, 0, 8 }, /* A */ }, .flags = PIX_FMT_BE | PIX_FMT_PLANAR | PIX_FMT_ALPHA, }, [AV_PIX_FMT_YUVA444P9LE] = { .name = "yuva444p9le", .nb_components = 4, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 8 }, /* Y */ { 1, 1, 1, 0, 8 }, /* U */ { 2, 1, 1, 0, 8 }, /* V */ { 3, 1, 1, 0, 8 }, /* A */ }, .flags = PIX_FMT_PLANAR | PIX_FMT_ALPHA, }, [AV_PIX_FMT_YUVA420P10BE] = { .name = "yuva420p10be", .nb_components = 4, .log2_chroma_w = 1, .log2_chroma_h = 1, .comp = { { 0, 1, 1, 0, 9 }, /* Y */ { 1, 1, 1, 0, 9 }, /* U */ { 2, 1, 1, 0, 9 }, /* V */ { 3, 1, 1, 0, 9 }, /* A */ }, .flags = PIX_FMT_BE | PIX_FMT_PLANAR | PIX_FMT_ALPHA, }, [AV_PIX_FMT_YUVA420P10LE] = { .name = "yuva420p10le", .nb_components = 4, .log2_chroma_w = 1, .log2_chroma_h = 1, .comp = { { 0, 1, 1, 0, 9 }, /* Y */ { 1, 1, 1, 0, 9 }, /* U */ { 2, 1, 1, 0, 9 }, /* V */ { 3, 1, 1, 0, 9 }, /* A */ }, .flags = PIX_FMT_PLANAR | PIX_FMT_ALPHA, }, [AV_PIX_FMT_YUVA422P10BE] = { .name = "yuva422p10be", .nb_components = 4, .log2_chroma_w = 1, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 9 }, /* Y */ { 1, 1, 1, 0, 9 }, /* U */ { 2, 1, 1, 0, 9 }, /* V */ { 3, 1, 1, 0, 9 }, /* A */ }, .flags = PIX_FMT_BE | PIX_FMT_PLANAR | PIX_FMT_ALPHA, }, [AV_PIX_FMT_YUVA422P10LE] = { .name = "yuva422p10le", .nb_components = 4, .log2_chroma_w = 1, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 9 }, /* Y */ { 1, 1, 1, 0, 9 }, /* U */ { 2, 1, 1, 0, 9 }, /* V */ { 3, 1, 1, 0, 9 }, /* A */ }, .flags = PIX_FMT_PLANAR | PIX_FMT_ALPHA, }, [AV_PIX_FMT_YUVA444P10BE] = { .name = "yuva444p10be", .nb_components = 4, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 9 }, /* Y */ { 1, 1, 1, 0, 9 }, /* U */ { 2, 1, 1, 0, 9 }, /* V */ { 3, 1, 1, 0, 9 }, /* A */ }, .flags = PIX_FMT_BE | PIX_FMT_PLANAR | PIX_FMT_ALPHA, }, [AV_PIX_FMT_YUVA444P10LE] = { .name = "yuva444p10le", .nb_components = 4, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 9 }, /* Y */ { 1, 1, 1, 0, 9 }, /* U */ { 2, 1, 1, 0, 9 }, /* V */ { 3, 1, 1, 0, 9 }, /* A */ }, .flags = PIX_FMT_PLANAR | PIX_FMT_ALPHA, }, [AV_PIX_FMT_YUVA420P16BE] = { .name = "yuva420p16be", .nb_components = 4, .log2_chroma_w = 1, .log2_chroma_h = 1, .comp = { { 0, 1, 1, 0, 15 }, /* Y */ { 1, 1, 1, 0, 15 }, /* U */ { 2, 1, 1, 0, 15 }, /* V */ { 3, 1, 1, 0, 15 }, /* A */ }, .flags = PIX_FMT_BE | PIX_FMT_PLANAR | PIX_FMT_ALPHA, }, [AV_PIX_FMT_YUVA420P16LE] = { .name = "yuva420p16le", .nb_components = 4, .log2_chroma_w = 1, .log2_chroma_h = 1, .comp = { { 0, 1, 1, 0, 15 }, /* Y */ { 1, 1, 1, 0, 15 }, /* U */ { 2, 1, 1, 0, 15 }, /* V */ { 3, 1, 1, 0, 15 }, /* A */ }, .flags = PIX_FMT_PLANAR | PIX_FMT_ALPHA, }, [AV_PIX_FMT_YUVA422P16BE] = { .name = "yuva422p16be", .nb_components = 4, .log2_chroma_w = 1, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 15 }, /* Y */ { 1, 1, 1, 0, 15 }, /* U */ { 2, 1, 1, 0, 15 }, /* V */ { 3, 1, 1, 0, 15 }, /* A */ }, .flags = PIX_FMT_BE | PIX_FMT_PLANAR | PIX_FMT_ALPHA, }, [AV_PIX_FMT_YUVA422P16LE] = { .name = "yuva422p16le", .nb_components = 4, .log2_chroma_w = 1, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 15 }, /* Y */ { 1, 1, 1, 0, 15 }, /* U */ { 2, 1, 1, 0, 15 }, /* V */ { 3, 1, 1, 0, 15 }, /* A */ }, .flags = PIX_FMT_PLANAR | PIX_FMT_ALPHA, }, [AV_PIX_FMT_YUVA444P16BE] = { .name = "yuva444p16be", .nb_components = 4, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 15 }, /* Y */ { 1, 1, 1, 0, 15 }, /* U */ { 2, 1, 1, 0, 15 }, /* V */ { 3, 1, 1, 0, 15 }, /* A */ }, .flags = PIX_FMT_BE | PIX_FMT_PLANAR | PIX_FMT_ALPHA, }, [AV_PIX_FMT_YUVA444P16LE] = { .name = "yuva444p16le", .nb_components = 4, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 15 }, /* Y */ { 1, 1, 1, 0, 15 }, /* U */ { 2, 1, 1, 0, 15 }, /* V */ { 3, 1, 1, 0, 15 }, /* A */ }, .flags = PIX_FMT_PLANAR | PIX_FMT_ALPHA, }, [AV_PIX_FMT_VDPAU_H264] = { .name = "vdpau_h264", .log2_chroma_w = 1, .log2_chroma_h = 1, .flags = PIX_FMT_HWACCEL, }, [AV_PIX_FMT_VDPAU_MPEG1] = { .name = "vdpau_mpeg1", .log2_chroma_w = 1, .log2_chroma_h = 1, .flags = PIX_FMT_HWACCEL, }, [AV_PIX_FMT_VDPAU_MPEG2] = { .name = "vdpau_mpeg2", .log2_chroma_w = 1, .log2_chroma_h = 1, .flags = PIX_FMT_HWACCEL, }, [AV_PIX_FMT_VDPAU_WMV3] = { .name = "vdpau_wmv3", .log2_chroma_w = 1, .log2_chroma_h = 1, .flags = PIX_FMT_HWACCEL, }, [AV_PIX_FMT_VDPAU_VC1] = { .name = "vdpau_vc1", .log2_chroma_w = 1, .log2_chroma_h = 1, .flags = PIX_FMT_HWACCEL, }, [AV_PIX_FMT_VDPAU_MPEG4] = { .name = "vdpau_mpeg4", .log2_chroma_w = 1, .log2_chroma_h = 1, .flags = PIX_FMT_HWACCEL, }, [AV_PIX_FMT_RGB48BE] = { .name = "rgb48be", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 5, 1, 0, 15 }, /* R */ { 0, 5, 3, 0, 15 }, /* G */ { 0, 5, 5, 0, 15 }, /* B */ }, .flags = PIX_FMT_RGB | PIX_FMT_BE, }, [AV_PIX_FMT_RGB48LE] = { .name = "rgb48le", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 5, 1, 0, 15 }, /* R */ { 0, 5, 3, 0, 15 }, /* G */ { 0, 5, 5, 0, 15 }, /* B */ }, .flags = PIX_FMT_RGB, }, [AV_PIX_FMT_RGB565BE] = { .name = "rgb565be", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 0, 3, 4 }, /* R */ { 0, 1, 1, 5, 5 }, /* G */ { 0, 1, 1, 0, 4 }, /* B */ }, .flags = PIX_FMT_BE | PIX_FMT_RGB, }, [AV_PIX_FMT_RGB565LE] = { .name = "rgb565le", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 2, 3, 4 }, /* R */ { 0, 1, 1, 5, 5 }, /* G */ { 0, 1, 1, 0, 4 }, /* B */ }, .flags = PIX_FMT_RGB, }, [AV_PIX_FMT_RGB555BE] = { .name = "rgb555be", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 0, 2, 4 }, /* R */ { 0, 1, 1, 5, 4 }, /* G */ { 0, 1, 1, 0, 4 }, /* B */ }, .flags = PIX_FMT_BE | PIX_FMT_RGB, }, [AV_PIX_FMT_RGB555LE] = { .name = "rgb555le", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 2, 2, 4 }, /* R */ { 0, 1, 1, 5, 4 }, /* G */ { 0, 1, 1, 0, 4 }, /* B */ }, .flags = PIX_FMT_RGB, }, [AV_PIX_FMT_RGB444BE] = { .name = "rgb444be", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 0, 0, 3 }, /* R */ { 0, 1, 1, 4, 3 }, /* G */ { 0, 1, 1, 0, 3 }, /* B */ }, .flags = PIX_FMT_BE | PIX_FMT_RGB, }, [AV_PIX_FMT_RGB444LE] = { .name = "rgb444le", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 2, 0, 3 }, /* R */ { 0, 1, 1, 4, 3 }, /* G */ { 0, 1, 1, 0, 3 }, /* B */ }, .flags = PIX_FMT_RGB, }, [AV_PIX_FMT_BGR48BE] = { .name = "bgr48be", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 5, 1, 0, 15 }, /* B */ { 0, 5, 3, 0, 15 }, /* G */ { 0, 5, 5, 0, 15 }, /* R */ }, .flags = PIX_FMT_BE | PIX_FMT_RGB, }, [AV_PIX_FMT_BGR48LE] = { .name = "bgr48le", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 5, 1, 0, 15 }, /* B */ { 0, 5, 3, 0, 15 }, /* G */ { 0, 5, 5, 0, 15 }, /* R */ }, .flags = PIX_FMT_RGB, }, [AV_PIX_FMT_BGR565BE] = { .name = "bgr565be", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 0, 3, 4 }, /* B */ { 0, 1, 1, 5, 5 }, /* G */ { 0, 1, 1, 0, 4 }, /* R */ }, .flags = PIX_FMT_BE | PIX_FMT_RGB, }, [AV_PIX_FMT_BGR565LE] = { .name = "bgr565le", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 2, 3, 4 }, /* B */ { 0, 1, 1, 5, 5 }, /* G */ { 0, 1, 1, 0, 4 }, /* R */ }, .flags = PIX_FMT_RGB, }, [AV_PIX_FMT_BGR555BE] = { .name = "bgr555be", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 0, 2, 4 }, /* B */ { 0, 1, 1, 5, 4 }, /* G */ { 0, 1, 1, 0, 4 }, /* R */ }, .flags = PIX_FMT_BE | PIX_FMT_RGB, }, [AV_PIX_FMT_BGR555LE] = { .name = "bgr555le", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 2, 2, 4 }, /* B */ { 0, 1, 1, 5, 4 }, /* G */ { 0, 1, 1, 0, 4 }, /* R */ }, .flags = PIX_FMT_RGB, }, [AV_PIX_FMT_BGR444BE] = { .name = "bgr444be", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 0, 0, 3 }, /* B */ { 0, 1, 1, 4, 3 }, /* G */ { 0, 1, 1, 0, 3 }, /* R */ }, .flags = PIX_FMT_BE | PIX_FMT_RGB, }, [AV_PIX_FMT_BGR444LE] = { .name = "bgr444le", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 2, 0, 3 }, /* B */ { 0, 1, 1, 4, 3 }, /* G */ { 0, 1, 1, 0, 3 }, /* R */ }, .flags = PIX_FMT_RGB, }, [AV_PIX_FMT_VAAPI_MOCO] = { .name = "vaapi_moco", .log2_chroma_w = 1, .log2_chroma_h = 1, .flags = PIX_FMT_HWACCEL, }, [AV_PIX_FMT_VAAPI_IDCT] = { .name = "vaapi_idct", .log2_chroma_w = 1, .log2_chroma_h = 1, .flags = PIX_FMT_HWACCEL, }, [AV_PIX_FMT_VAAPI_VLD] = { .name = "vaapi_vld", .log2_chroma_w = 1, .log2_chroma_h = 1, .flags = PIX_FMT_HWACCEL, }, [AV_PIX_FMT_VDA_VLD] = { .name = "vda_vld", .log2_chroma_w = 1, .log2_chroma_h = 1, .flags = PIX_FMT_HWACCEL, }, [AV_PIX_FMT_YUV420P9LE] = { .name = "yuv420p9le", .nb_components = 3, .log2_chroma_w = 1, .log2_chroma_h = 1, .comp = { { 0, 1, 1, 0, 8 }, /* Y */ { 1, 1, 1, 0, 8 }, /* U */ { 2, 1, 1, 0, 8 }, /* V */ }, .flags = PIX_FMT_PLANAR, }, [AV_PIX_FMT_YUV420P9BE] = { .name = "yuv420p9be", .nb_components = 3, .log2_chroma_w = 1, .log2_chroma_h = 1, .comp = { { 0, 1, 1, 0, 8 }, /* Y */ { 1, 1, 1, 0, 8 }, /* U */ { 2, 1, 1, 0, 8 }, /* V */ }, .flags = PIX_FMT_BE | PIX_FMT_PLANAR, }, [AV_PIX_FMT_YUV420P10LE] = { .name = "yuv420p10le", .nb_components = 3, .log2_chroma_w = 1, .log2_chroma_h = 1, .comp = { { 0, 1, 1, 0, 9 }, /* Y */ { 1, 1, 1, 0, 9 }, /* U */ { 2, 1, 1, 0, 9 }, /* V */ }, .flags = PIX_FMT_PLANAR, }, [AV_PIX_FMT_YUV420P10BE] = { .name = "yuv420p10be", .nb_components = 3, .log2_chroma_w = 1, .log2_chroma_h = 1, .comp = { { 0, 1, 1, 0, 9 }, /* Y */ { 1, 1, 1, 0, 9 }, /* U */ { 2, 1, 1, 0, 9 }, /* V */ }, .flags = PIX_FMT_BE | PIX_FMT_PLANAR, }, [AV_PIX_FMT_YUV420P16LE] = { .name = "yuv420p16le", .nb_components = 3, .log2_chroma_w = 1, .log2_chroma_h = 1, .comp = { { 0, 1, 1, 0, 15 }, /* Y */ { 1, 1, 1, 0, 15 }, /* U */ { 2, 1, 1, 0, 15 }, /* V */ }, .flags = PIX_FMT_PLANAR, }, [AV_PIX_FMT_YUV420P16BE] = { .name = "yuv420p16be", .nb_components = 3, .log2_chroma_w = 1, .log2_chroma_h = 1, .comp = { { 0, 1, 1, 0, 15 }, /* Y */ { 1, 1, 1, 0, 15 }, /* U */ { 2, 1, 1, 0, 15 }, /* V */ }, .flags = PIX_FMT_BE | PIX_FMT_PLANAR, }, [AV_PIX_FMT_YUV422P9LE] = { .name = "yuv422p9le", .nb_components = 3, .log2_chroma_w = 1, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 8 }, /* Y */ { 1, 1, 1, 0, 8 }, /* U */ { 2, 1, 1, 0, 8 }, /* V */ }, .flags = PIX_FMT_PLANAR, }, [AV_PIX_FMT_YUV422P9BE] = { .name = "yuv422p9be", .nb_components = 3, .log2_chroma_w = 1, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 8 }, /* Y */ { 1, 1, 1, 0, 8 }, /* U */ { 2, 1, 1, 0, 8 }, /* V */ }, .flags = PIX_FMT_BE | PIX_FMT_PLANAR, }, [AV_PIX_FMT_YUV422P10LE] = { .name = "yuv422p10le", .nb_components = 3, .log2_chroma_w = 1, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 9 }, /* Y */ { 1, 1, 1, 0, 9 }, /* U */ { 2, 1, 1, 0, 9 }, /* V */ }, .flags = PIX_FMT_PLANAR, }, [AV_PIX_FMT_YUV422P10BE] = { .name = "yuv422p10be", .nb_components = 3, .log2_chroma_w = 1, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 9 }, /* Y */ { 1, 1, 1, 0, 9 }, /* U */ { 2, 1, 1, 0, 9 }, /* V */ }, .flags = PIX_FMT_BE | PIX_FMT_PLANAR, }, [AV_PIX_FMT_YUV422P16LE] = { .name = "yuv422p16le", .nb_components = 3, .log2_chroma_w = 1, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 15 }, /* Y */ { 1, 1, 1, 0, 15 }, /* U */ { 2, 1, 1, 0, 15 }, /* V */ }, .flags = PIX_FMT_PLANAR, }, [AV_PIX_FMT_YUV422P16BE] = { .name = "yuv422p16be", .nb_components = 3, .log2_chroma_w = 1, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 15 }, /* Y */ { 1, 1, 1, 0, 15 }, /* U */ { 2, 1, 1, 0, 15 }, /* V */ }, .flags = PIX_FMT_BE | PIX_FMT_PLANAR, }, [AV_PIX_FMT_YUV444P16LE] = { .name = "yuv444p16le", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 15 }, /* Y */ { 1, 1, 1, 0, 15 }, /* U */ { 2, 1, 1, 0, 15 }, /* V */ }, .flags = PIX_FMT_PLANAR, }, [AV_PIX_FMT_YUV444P16BE] = { .name = "yuv444p16be", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 15 }, /* Y */ { 1, 1, 1, 0, 15 }, /* U */ { 2, 1, 1, 0, 15 }, /* V */ }, .flags = PIX_FMT_BE | PIX_FMT_PLANAR, }, [AV_PIX_FMT_YUV444P10LE] = { .name = "yuv444p10le", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 9 }, /* Y */ { 1, 1, 1, 0, 9 }, /* U */ { 2, 1, 1, 0, 9 }, /* V */ }, .flags = PIX_FMT_PLANAR, }, [AV_PIX_FMT_YUV444P10BE] = { .name = "yuv444p10be", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 9 }, /* Y */ { 1, 1, 1, 0, 9 }, /* U */ { 2, 1, 1, 0, 9 }, /* V */ }, .flags = PIX_FMT_BE | PIX_FMT_PLANAR, }, [AV_PIX_FMT_YUV444P9LE] = { .name = "yuv444p9le", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 8 }, /* Y */ { 1, 1, 1, 0, 8 }, /* U */ { 2, 1, 1, 0, 8 }, /* V */ }, .flags = PIX_FMT_PLANAR, }, [AV_PIX_FMT_YUV444P9BE] = { .name = "yuv444p9be", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 8 }, /* Y */ { 1, 1, 1, 0, 8 }, /* U */ { 2, 1, 1, 0, 8 }, /* V */ }, .flags = PIX_FMT_BE | PIX_FMT_PLANAR, }, [AV_PIX_FMT_DXVA2_VLD] = { .name = "dxva2_vld", .log2_chroma_w = 1, .log2_chroma_h = 1, .flags = PIX_FMT_HWACCEL, }, [AV_PIX_FMT_Y400A] = { .name = "y400a", .nb_components = 2, .comp = { { 0, 1, 1, 0, 7 }, /* Y */ { 0, 1, 2, 0, 7 }, /* A */ }, .flags = PIX_FMT_ALPHA, }, [AV_PIX_FMT_GBRP] = { .name = "gbrp", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 0, 1, 0, 7 }, /* G */ { 1, 0, 1, 0, 7 }, /* B */ { 2, 0, 1, 0, 7 }, /* R */ }, .flags = PIX_FMT_PLANAR | PIX_FMT_RGB, }, [AV_PIX_FMT_GBRP9LE] = { .name = "gbrp9le", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 8 }, /* G */ { 1, 1, 1, 0, 8 }, /* B */ { 2, 1, 1, 0, 8 }, /* R */ }, .flags = PIX_FMT_PLANAR | PIX_FMT_RGB, }, [AV_PIX_FMT_GBRP9BE] = { .name = "gbrp9be", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 8 }, /* G */ { 1, 1, 1, 0, 8 }, /* B */ { 2, 1, 1, 0, 8 }, /* R */ }, .flags = PIX_FMT_BE | PIX_FMT_PLANAR | PIX_FMT_RGB, }, [AV_PIX_FMT_GBRP10LE] = { .name = "gbrp10le", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 9 }, /* G */ { 1, 1, 1, 0, 9 }, /* B */ { 2, 1, 1, 0, 9 }, /* R */ }, .flags = PIX_FMT_PLANAR | PIX_FMT_RGB, }, [AV_PIX_FMT_GBRP10BE] = { .name = "gbrp10be", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 9 }, /* G */ { 1, 1, 1, 0, 9 }, /* B */ { 2, 1, 1, 0, 9 }, /* R */ }, .flags = PIX_FMT_BE | PIX_FMT_PLANAR | PIX_FMT_RGB, }, [AV_PIX_FMT_GBRP16LE] = { .name = "gbrp16le", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 15 }, /* G */ { 1, 1, 1, 0, 15 }, /* B */ { 2, 1, 1, 0, 15 }, /* R */ }, .flags = PIX_FMT_PLANAR | PIX_FMT_RGB, }, [AV_PIX_FMT_GBRP16BE] = { .name = "gbrp16be", .nb_components = 3, .log2_chroma_w = 0, .log2_chroma_h = 0, .comp = { { 0, 1, 1, 0, 15 }, /* G */ { 1, 1, 1, 0, 15 }, /* B */ { 2, 1, 1, 0, 15 }, /* R */ }, .flags = PIX_FMT_BE | PIX_FMT_PLANAR | PIX_FMT_RGB, }, }; static enum AVPixelFormat get_pix_fmt_internal(const char *name) { enum AVPixelFormat pix_fmt; for (pix_fmt = 0; pix_fmt < AV_PIX_FMT_NB; pix_fmt++) if (av_pix_fmt_descriptors[pix_fmt].name && !strcmp(av_pix_fmt_descriptors[pix_fmt].name, name)) return pix_fmt; return AV_PIX_FMT_NONE; } const char *av_get_pix_fmt_name(enum AVPixelFormat pix_fmt) { return (unsigned)pix_fmt < AV_PIX_FMT_NB ? av_pix_fmt_descriptors[pix_fmt].name : NULL; } #if HAVE_BIGENDIAN # define X_NE(be, le) be #else # define X_NE(be, le) le #endif enum AVPixelFormat av_get_pix_fmt(const char *name) { enum AVPixelFormat pix_fmt; if (!strcmp(name, "rgb32")) name = X_NE("argb", "bgra"); else if (!strcmp(name, "bgr32")) name = X_NE("abgr", "rgba"); pix_fmt = get_pix_fmt_internal(name); if (pix_fmt == AV_PIX_FMT_NONE) { char name2[32]; snprintf(name2, sizeof(name2), "%s%s", name, X_NE("be", "le")); pix_fmt = get_pix_fmt_internal(name2); } return pix_fmt; } int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc) { int c, bits = 0; int log2_pixels = pixdesc->log2_chroma_w + pixdesc->log2_chroma_h; for (c = 0; c < pixdesc->nb_components; c++) { int s = c == 1 || c == 2 ? 0 : log2_pixels; bits += (pixdesc->comp[c].depth_minus1 + 1) << s; } return bits >> log2_pixels; } char *av_get_pix_fmt_string (char *buf, int buf_size, enum AVPixelFormat pix_fmt) { /* print header */ if (pix_fmt < 0) { snprintf (buf, buf_size, "name" " nb_components" " nb_bits"); } else { const AVPixFmtDescriptor *pixdesc = &av_pix_fmt_descriptors[pix_fmt]; snprintf(buf, buf_size, "%-11s %7d %10d", pixdesc->name, pixdesc->nb_components, av_get_bits_per_pixel(pixdesc)); } return buf; } const AVPixFmtDescriptor *av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt) { if (pix_fmt < 0 || pix_fmt >= AV_PIX_FMT_NB) return NULL; return &av_pix_fmt_descriptors[pix_fmt]; } const AVPixFmtDescriptor *av_pix_fmt_desc_next(const AVPixFmtDescriptor *prev) { if (!prev) return &av_pix_fmt_descriptors[0]; if (prev - av_pix_fmt_descriptors < FF_ARRAY_ELEMS(av_pix_fmt_descriptors) - 1) return prev + 1; return NULL; } enum AVPixelFormat av_pix_fmt_desc_get_id(const AVPixFmtDescriptor *desc) { if (desc < av_pix_fmt_descriptors || desc >= av_pix_fmt_descriptors + FF_ARRAY_ELEMS(av_pix_fmt_descriptors)) return AV_PIX_FMT_NONE; return desc - av_pix_fmt_descriptors; } int av_pix_fmt_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift) { const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); if (!desc) return AVERROR(ENOSYS); *h_shift = desc->log2_chroma_w; *v_shift = desc->log2_chroma_h; return 0; }