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ffmpeg / libavcodec / imgconvert.c @ d2cbdb17

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/*
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 * Misc image conversion routines
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 * Copyright (c) 2001, 2002, 2003 Fabrice Bellard
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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/**
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 * @file
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 * misc image conversion routines
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 */
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/* TODO:
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 * - write 'ffimg' program to test all the image related stuff
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 * - move all api to slice based system
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 * - integrate deinterlacing, postprocessing and scaling in the conversion process
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 */
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#include "avcodec.h"
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#include "dsputil.h"
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#include "internal.h"
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#include "imgconvert.h"
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#include "libavutil/colorspace.h"
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#include "libavutil/pixdesc.h"
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#include "libavcore/imgutils.h"
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#include "libavcore/internal.h"
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#if HAVE_MMX && HAVE_YASM
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#include "x86/dsputil_mmx.h"
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#endif
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#define xglue(x, y) x ## y
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#define glue(x, y) xglue(x, y)
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#define FF_COLOR_RGB      0 /**< RGB color space */
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#define FF_COLOR_GRAY     1 /**< gray color space */
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#define FF_COLOR_YUV      2 /**< YUV color space. 16 <= Y <= 235, 16 <= U, V <= 240 */
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#define FF_COLOR_YUV_JPEG 3 /**< YUV color space. 0 <= Y <= 255, 0 <= U, V <= 255 */
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#define FF_PIXEL_PLANAR   0 /**< each channel has one component in AVPicture */
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#define FF_PIXEL_PACKED   1 /**< only one components containing all the channels */
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#define FF_PIXEL_PALETTE  2  /**< one components containing indexes for a palette */
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#if HAVE_MMX && HAVE_YASM
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#define deinterlace_line_inplace ff_deinterlace_line_inplace_mmx
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#define deinterlace_line         ff_deinterlace_line_mmx
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#else
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#define deinterlace_line_inplace deinterlace_line_inplace_c
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#define deinterlace_line         deinterlace_line_c
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#endif
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typedef struct PixFmtInfo {
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    uint8_t nb_channels;     /**< number of channels (including alpha) */
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    uint8_t color_type;      /**< color type (see FF_COLOR_xxx constants) */
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    uint8_t pixel_type;      /**< pixel storage type (see FF_PIXEL_xxx constants) */
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    uint8_t is_alpha : 1;    /**< true if alpha can be specified */
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    uint8_t depth;           /**< bit depth of the color components */
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} PixFmtInfo;
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/* this table gives more information about formats */
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static const PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
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    /* YUV formats */
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    [PIX_FMT_YUV420P] = {
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        .nb_channels = 3,
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        .color_type = FF_COLOR_YUV,
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        .pixel_type = FF_PIXEL_PLANAR,
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        .depth = 8,
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    },
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    [PIX_FMT_YUV422P] = {
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        .nb_channels = 3,
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        .color_type = FF_COLOR_YUV,
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        .pixel_type = FF_PIXEL_PLANAR,
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        .depth = 8,
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    },
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    [PIX_FMT_YUV444P] = {
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        .nb_channels = 3,
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        .color_type = FF_COLOR_YUV,
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        .pixel_type = FF_PIXEL_PLANAR,
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        .depth = 8,
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    },
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    [PIX_FMT_YUYV422] = {
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        .nb_channels = 1,
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        .color_type = FF_COLOR_YUV,
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        .pixel_type = FF_PIXEL_PACKED,
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        .depth = 8,
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    },
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    [PIX_FMT_UYVY422] = {
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        .nb_channels = 1,
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        .color_type = FF_COLOR_YUV,
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        .pixel_type = FF_PIXEL_PACKED,
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        .depth = 8,
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    },
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    [PIX_FMT_YUV410P] = {
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        .nb_channels = 3,
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        .color_type = FF_COLOR_YUV,
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        .pixel_type = FF_PIXEL_PLANAR,
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        .depth = 8,
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    },
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    [PIX_FMT_YUV411P] = {
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        .nb_channels = 3,
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        .color_type = FF_COLOR_YUV,
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        .pixel_type = FF_PIXEL_PLANAR,
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        .depth = 8,
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    },
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    [PIX_FMT_YUV440P] = {
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        .nb_channels = 3,
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        .color_type = FF_COLOR_YUV,
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        .pixel_type = FF_PIXEL_PLANAR,
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        .depth = 8,
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    },
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    [PIX_FMT_YUV420P16LE] = {
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        .nb_channels = 3,
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        .color_type = FF_COLOR_YUV,
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        .pixel_type = FF_PIXEL_PLANAR,
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        .depth = 16,
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    },
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    [PIX_FMT_YUV422P16LE] = {
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        .nb_channels = 3,
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        .color_type = FF_COLOR_YUV,
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        .pixel_type = FF_PIXEL_PLANAR,
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        .depth = 16,
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    },
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    [PIX_FMT_YUV444P16LE] = {
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        .nb_channels = 3,
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        .color_type = FF_COLOR_YUV,
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        .pixel_type = FF_PIXEL_PLANAR,
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        .depth = 16,
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    },
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    [PIX_FMT_YUV420P16BE] = {
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        .nb_channels = 3,
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        .color_type = FF_COLOR_YUV,
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        .pixel_type = FF_PIXEL_PLANAR,
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        .depth = 16,
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    },
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    [PIX_FMT_YUV422P16BE] = {
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        .nb_channels = 3,
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        .color_type = FF_COLOR_YUV,
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        .pixel_type = FF_PIXEL_PLANAR,
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        .depth = 16,
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    },
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    [PIX_FMT_YUV444P16BE] = {
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        .nb_channels = 3,
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        .color_type = FF_COLOR_YUV,
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        .pixel_type = FF_PIXEL_PLANAR,
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        .depth = 16,
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    },
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    /* YUV formats with alpha plane */
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    [PIX_FMT_YUVA420P] = {
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        .nb_channels = 4,
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        .color_type = FF_COLOR_YUV,
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        .pixel_type = FF_PIXEL_PLANAR,
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        .depth = 8,
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    },
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    /* JPEG YUV */
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    [PIX_FMT_YUVJ420P] = {
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        .nb_channels = 3,
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        .color_type = FF_COLOR_YUV_JPEG,
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        .pixel_type = FF_PIXEL_PLANAR,
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        .depth = 8,
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    },
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    [PIX_FMT_YUVJ422P] = {
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        .nb_channels = 3,
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        .color_type = FF_COLOR_YUV_JPEG,
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        .pixel_type = FF_PIXEL_PLANAR,
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        .depth = 8,
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    },
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    [PIX_FMT_YUVJ444P] = {
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        .nb_channels = 3,
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        .color_type = FF_COLOR_YUV_JPEG,
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        .pixel_type = FF_PIXEL_PLANAR,
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        .depth = 8,
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    },
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    [PIX_FMT_YUVJ440P] = {
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        .nb_channels = 3,
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        .color_type = FF_COLOR_YUV_JPEG,
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        .pixel_type = FF_PIXEL_PLANAR,
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        .depth = 8,
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    },
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    /* RGB formats */
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    [PIX_FMT_RGB24] = {
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        .nb_channels = 3,
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        .color_type = FF_COLOR_RGB,
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        .pixel_type = FF_PIXEL_PACKED,
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        .depth = 8,
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    },
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    [PIX_FMT_BGR24] = {
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        .nb_channels = 3,
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        .color_type = FF_COLOR_RGB,
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        .pixel_type = FF_PIXEL_PACKED,
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        .depth = 8,
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    },
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    [PIX_FMT_ARGB] = {
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        .nb_channels = 4, .is_alpha = 1,
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        .color_type = FF_COLOR_RGB,
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        .pixel_type = FF_PIXEL_PACKED,
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        .depth = 8,
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    },
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    [PIX_FMT_RGB48BE] = {
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        .nb_channels = 3,
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        .color_type = FF_COLOR_RGB,
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        .pixel_type = FF_PIXEL_PACKED,
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        .depth = 16,
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    },
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    [PIX_FMT_RGB48LE] = {
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        .nb_channels = 3,
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        .color_type = FF_COLOR_RGB,
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        .pixel_type = FF_PIXEL_PACKED,
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        .depth = 16,
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    },
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    [PIX_FMT_RGB565BE] = {
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        .nb_channels = 3,
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        .color_type = FF_COLOR_RGB,
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        .pixel_type = FF_PIXEL_PACKED,
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        .depth = 5,
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    },
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    [PIX_FMT_RGB565LE] = {
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        .nb_channels = 3,
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        .color_type = FF_COLOR_RGB,
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        .pixel_type = FF_PIXEL_PACKED,
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        .depth = 5,
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    },
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    [PIX_FMT_RGB555BE] = {
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        .nb_channels = 3,
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        .color_type = FF_COLOR_RGB,
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        .pixel_type = FF_PIXEL_PACKED,
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        .depth = 5,
245
    },
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    [PIX_FMT_RGB555LE] = {
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        .nb_channels = 3,
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        .color_type = FF_COLOR_RGB,
249
        .pixel_type = FF_PIXEL_PACKED,
250
        .depth = 5,
251
    },
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    [PIX_FMT_RGB444BE] = {
253
        .nb_channels = 3,
254
        .color_type = FF_COLOR_RGB,
255
        .pixel_type = FF_PIXEL_PACKED,
256
        .depth = 4,
257
    },
258
    [PIX_FMT_RGB444LE] = {
259
        .nb_channels = 3,
260
        .color_type = FF_COLOR_RGB,
261
        .pixel_type = FF_PIXEL_PACKED,
262
        .depth = 4,
263
    },
264

    
265
    /* gray / mono formats */
266
    [PIX_FMT_GRAY16BE] = {
267
        .nb_channels = 1,
268
        .color_type = FF_COLOR_GRAY,
269
        .pixel_type = FF_PIXEL_PLANAR,
270
        .depth = 16,
271
    },
272
    [PIX_FMT_GRAY16LE] = {
273
        .nb_channels = 1,
274
        .color_type = FF_COLOR_GRAY,
275
        .pixel_type = FF_PIXEL_PLANAR,
276
        .depth = 16,
277
    },
278
    [PIX_FMT_GRAY8] = {
279
        .nb_channels = 1,
280
        .color_type = FF_COLOR_GRAY,
281
        .pixel_type = FF_PIXEL_PLANAR,
282
        .depth = 8,
283
    },
284
    [PIX_FMT_MONOWHITE] = {
285
        .nb_channels = 1,
286
        .color_type = FF_COLOR_GRAY,
287
        .pixel_type = FF_PIXEL_PLANAR,
288
        .depth = 1,
289
    },
290
    [PIX_FMT_MONOBLACK] = {
291
        .nb_channels = 1,
292
        .color_type = FF_COLOR_GRAY,
293
        .pixel_type = FF_PIXEL_PLANAR,
294
        .depth = 1,
295
    },
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297
    /* paletted formats */
298
    [PIX_FMT_PAL8] = {
299
        .nb_channels = 4, .is_alpha = 1,
300
        .color_type = FF_COLOR_RGB,
301
        .pixel_type = FF_PIXEL_PALETTE,
302
        .depth = 8,
303
    },
304
    [PIX_FMT_UYYVYY411] = {
305
        .nb_channels = 1,
306
        .color_type = FF_COLOR_YUV,
307
        .pixel_type = FF_PIXEL_PACKED,
308
        .depth = 8,
309
    },
310
    [PIX_FMT_ABGR] = {
311
        .nb_channels = 4, .is_alpha = 1,
312
        .color_type = FF_COLOR_RGB,
313
        .pixel_type = FF_PIXEL_PACKED,
314
        .depth = 8,
315
    },
316
    [PIX_FMT_BGR565BE] = {
317
        .nb_channels = 3,
318
        .color_type = FF_COLOR_RGB,
319
        .pixel_type = FF_PIXEL_PACKED,
320
        .depth = 5,
321
    },
322
    [PIX_FMT_BGR565LE] = {
323
        .nb_channels = 3,
324
        .color_type = FF_COLOR_RGB,
325
        .pixel_type = FF_PIXEL_PACKED,
326
        .depth = 5,
327
    },
328
    [PIX_FMT_BGR555BE] = {
329
        .nb_channels = 3,
330
        .color_type = FF_COLOR_RGB,
331
        .pixel_type = FF_PIXEL_PACKED,
332
        .depth = 5,
333
    },
334
    [PIX_FMT_BGR555LE] = {
335
        .nb_channels = 3,
336
        .color_type = FF_COLOR_RGB,
337
        .pixel_type = FF_PIXEL_PACKED,
338
        .depth = 5,
339
    },
340
    [PIX_FMT_BGR444BE] = {
341
        .nb_channels = 3,
342
        .color_type = FF_COLOR_RGB,
343
        .pixel_type = FF_PIXEL_PACKED,
344
        .depth = 4,
345
    },
346
    [PIX_FMT_BGR444LE] = {
347
        .nb_channels = 3,
348
        .color_type = FF_COLOR_RGB,
349
        .pixel_type = FF_PIXEL_PACKED,
350
        .depth = 4,
351
    },
352
    [PIX_FMT_RGB8] = {
353
        .nb_channels = 1,
354
        .color_type = FF_COLOR_RGB,
355
        .pixel_type = FF_PIXEL_PACKED,
356
        .depth = 8,
357
    },
358
    [PIX_FMT_RGB4] = {
359
        .nb_channels = 1,
360
        .color_type = FF_COLOR_RGB,
361
        .pixel_type = FF_PIXEL_PACKED,
362
        .depth = 4,
363
    },
364
    [PIX_FMT_RGB4_BYTE] = {
365
        .nb_channels = 1,
366
        .color_type = FF_COLOR_RGB,
367
        .pixel_type = FF_PIXEL_PACKED,
368
        .depth = 8,
369
    },
370
    [PIX_FMT_BGR8] = {
371
        .nb_channels = 1,
372
        .color_type = FF_COLOR_RGB,
373
        .pixel_type = FF_PIXEL_PACKED,
374
        .depth = 8,
375
    },
376
    [PIX_FMT_BGR4] = {
377
        .nb_channels = 1,
378
        .color_type = FF_COLOR_RGB,
379
        .pixel_type = FF_PIXEL_PACKED,
380
        .depth = 4,
381
    },
382
    [PIX_FMT_BGR4_BYTE] = {
383
        .nb_channels = 1,
384
        .color_type = FF_COLOR_RGB,
385
        .pixel_type = FF_PIXEL_PACKED,
386
        .depth = 8,
387
    },
388
    [PIX_FMT_NV12] = {
389
        .nb_channels = 2,
390
        .color_type = FF_COLOR_YUV,
391
        .pixel_type = FF_PIXEL_PLANAR,
392
        .depth = 8,
393
    },
394
    [PIX_FMT_NV21] = {
395
        .nb_channels = 2,
396
        .color_type = FF_COLOR_YUV,
397
        .pixel_type = FF_PIXEL_PLANAR,
398
        .depth = 8,
399
    },
400

    
401
    [PIX_FMT_BGRA] = {
402
        .nb_channels = 4, .is_alpha = 1,
403
        .color_type = FF_COLOR_RGB,
404
        .pixel_type = FF_PIXEL_PACKED,
405
        .depth = 8,
406
    },
407
    [PIX_FMT_RGBA] = {
408
        .nb_channels = 4, .is_alpha = 1,
409
        .color_type = FF_COLOR_RGB,
410
        .pixel_type = FF_PIXEL_PACKED,
411
        .depth = 8,
412
    },
413
};
414

    
415
void avcodec_get_chroma_sub_sample(enum PixelFormat pix_fmt, int *h_shift, int *v_shift)
416
{
417
    *h_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_w;
418
    *v_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_h;
419
}
420

    
421
const char *avcodec_get_pix_fmt_name(enum PixelFormat pix_fmt)
422
{
423
    if ((unsigned)pix_fmt >= PIX_FMT_NB)
424
        return NULL;
425
    else
426
        return av_pix_fmt_descriptors[pix_fmt].name;
427
}
428

    
429
#if LIBAVCODEC_VERSION_MAJOR < 53
430
enum PixelFormat avcodec_get_pix_fmt(const char *name)
431
{
432
    return av_get_pix_fmt(name);
433
}
434
#endif
435

    
436
void avcodec_pix_fmt_string (char *buf, int buf_size, enum PixelFormat pix_fmt)
437
{
438
    /* print header */
439
    if (pix_fmt < 0)
440
        snprintf (buf, buf_size,
441
                  "name      " " nb_components" " nb_bits"
442
            );
443
    else{
444
        const AVPixFmtDescriptor *pixdesc = &av_pix_fmt_descriptors[pix_fmt];
445
        snprintf (buf, buf_size,
446
                  "%-11s %7d %10d",
447
                  pixdesc->name,
448
                  pixdesc->nb_components,
449
                  av_get_bits_per_pixel(pixdesc)
450
            );
451
    }
452
}
453

    
454
int ff_is_hwaccel_pix_fmt(enum PixelFormat pix_fmt)
455
{
456
    return av_pix_fmt_descriptors[pix_fmt].flags & PIX_FMT_HWACCEL;
457
}
458

    
459
#if LIBAVCODEC_VERSION_MAJOR < 53
460
int ff_set_systematic_pal(uint32_t pal[256], enum PixelFormat pix_fmt){
461
    return ff_set_systematic_pal2(pal, pix_fmt);
462
}
463

    
464
int ff_fill_linesize(AVPicture *picture, enum PixelFormat pix_fmt, int width)
465
{
466
    return av_image_fill_linesizes(picture->linesize, pix_fmt, width);
467
}
468

    
469
int ff_fill_pointer(AVPicture *picture, uint8_t *ptr, enum PixelFormat pix_fmt,
470
                    int height)
471
{
472
    return av_image_fill_pointers(picture->data, pix_fmt, height, ptr, picture->linesize);
473
}
474
#endif
475

    
476
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
477
                   enum PixelFormat pix_fmt, int width, int height)
478
{
479
    int ret;
480

    
481
    if ((ret = av_image_check_size(width, height, 0, NULL)) < 0)
482
        return ret;
483

    
484
    if ((ret = av_image_fill_linesizes(picture->linesize, pix_fmt, width)) < 0)
485
        return ret;
486

    
487
    return av_image_fill_pointers(picture->data, pix_fmt, height, ptr, picture->linesize);
488
}
489

    
490
int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width, int height,
491
                     unsigned char *dest, int dest_size)
492
{
493
    int i, j, nb_planes = 0, linesizes[4];
494
    const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
495
    int size = avpicture_get_size(pix_fmt, width, height);
496

    
497
    if (size > dest_size || size < 0)
498
        return AVERROR(EINVAL);
499

    
500
    for (i = 0; i < desc->nb_components; i++)
501
        nb_planes = FFMAX(desc->comp[i].plane, nb_planes);
502
    nb_planes++;
503

    
504
    av_image_fill_linesizes(linesizes, pix_fmt, width);
505
    for (i = 0; i < nb_planes; i++) {
506
        int h, s = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
507
        h = (height + (1 << s) - 1) >> s;
508

    
509
        s = src->data[i];
510
        for (j = 0; j < h; j++) {
511
            memcpy(dest, s, linesizes[i]);
512
            dest += linesizes[i];
513
            s += src->linesize[i];
514
        }
515
    }
516

    
517
    if (desc->flags & PIX_FMT_PAL)
518
        memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4);
519

    
520
    return size;
521
}
522

    
523
int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height)
524
{
525
    AVPicture dummy_pict;
526
    if(av_image_check_size(width, height, 0, NULL))
527
        return -1;
528
    switch (pix_fmt) {
529
    case PIX_FMT_RGB8:
530
    case PIX_FMT_BGR8:
531
    case PIX_FMT_RGB4_BYTE:
532
    case PIX_FMT_BGR4_BYTE:
533
    case PIX_FMT_GRAY8:
534
        // do not include palette for these pseudo-paletted formats
535
        return width * height;
536
    }
537
    return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
538
}
539

    
540
int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt,
541
                             int has_alpha)
542
{
543
    const PixFmtInfo *pf, *ps;
544
    const AVPixFmtDescriptor *src_desc = &av_pix_fmt_descriptors[src_pix_fmt];
545
    const AVPixFmtDescriptor *dst_desc = &av_pix_fmt_descriptors[dst_pix_fmt];
546
    int loss;
547

    
548
    ps = &pix_fmt_info[src_pix_fmt];
549

    
550
    /* compute loss */
551
    loss = 0;
552
    pf = &pix_fmt_info[dst_pix_fmt];
553
    if (pf->depth < ps->depth ||
554
        ((dst_pix_fmt == PIX_FMT_RGB555BE || dst_pix_fmt == PIX_FMT_RGB555LE ||
555
          dst_pix_fmt == PIX_FMT_BGR555BE || dst_pix_fmt == PIX_FMT_BGR555LE) &&
556
         (src_pix_fmt == PIX_FMT_RGB565BE || src_pix_fmt == PIX_FMT_RGB565LE ||
557
          src_pix_fmt == PIX_FMT_BGR565BE || src_pix_fmt == PIX_FMT_BGR565LE)))
558
        loss |= FF_LOSS_DEPTH;
559
    if (dst_desc->log2_chroma_w > src_desc->log2_chroma_w ||
560
        dst_desc->log2_chroma_h > src_desc->log2_chroma_h)
561
        loss |= FF_LOSS_RESOLUTION;
562
    switch(pf->color_type) {
563
    case FF_COLOR_RGB:
564
        if (ps->color_type != FF_COLOR_RGB &&
565
            ps->color_type != FF_COLOR_GRAY)
566
            loss |= FF_LOSS_COLORSPACE;
567
        break;
568
    case FF_COLOR_GRAY:
569
        if (ps->color_type != FF_COLOR_GRAY)
570
            loss |= FF_LOSS_COLORSPACE;
571
        break;
572
    case FF_COLOR_YUV:
573
        if (ps->color_type != FF_COLOR_YUV)
574
            loss |= FF_LOSS_COLORSPACE;
575
        break;
576
    case FF_COLOR_YUV_JPEG:
577
        if (ps->color_type != FF_COLOR_YUV_JPEG &&
578
            ps->color_type != FF_COLOR_YUV &&
579
            ps->color_type != FF_COLOR_GRAY)
580
            loss |= FF_LOSS_COLORSPACE;
581
        break;
582
    default:
583
        /* fail safe test */
584
        if (ps->color_type != pf->color_type)
585
            loss |= FF_LOSS_COLORSPACE;
586
        break;
587
    }
588
    if (pf->color_type == FF_COLOR_GRAY &&
589
        ps->color_type != FF_COLOR_GRAY)
590
        loss |= FF_LOSS_CHROMA;
591
    if (!pf->is_alpha && (ps->is_alpha && has_alpha))
592
        loss |= FF_LOSS_ALPHA;
593
    if (pf->pixel_type == FF_PIXEL_PALETTE &&
594
        (ps->pixel_type != FF_PIXEL_PALETTE && ps->color_type != FF_COLOR_GRAY))
595
        loss |= FF_LOSS_COLORQUANT;
596
    return loss;
597
}
598

    
599
static int avg_bits_per_pixel(enum PixelFormat pix_fmt)
600
{
601
    int bits;
602
    const PixFmtInfo *pf;
603
    const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
604

    
605
    pf = &pix_fmt_info[pix_fmt];
606
    switch(pf->pixel_type) {
607
    case FF_PIXEL_PACKED:
608
        switch(pix_fmt) {
609
        case PIX_FMT_YUYV422:
610
        case PIX_FMT_UYVY422:
611
        case PIX_FMT_RGB565BE:
612
        case PIX_FMT_RGB565LE:
613
        case PIX_FMT_RGB555BE:
614
        case PIX_FMT_RGB555LE:
615
        case PIX_FMT_RGB444BE:
616
        case PIX_FMT_RGB444LE:
617
        case PIX_FMT_BGR565BE:
618
        case PIX_FMT_BGR565LE:
619
        case PIX_FMT_BGR555BE:
620
        case PIX_FMT_BGR555LE:
621
        case PIX_FMT_BGR444BE:
622
        case PIX_FMT_BGR444LE:
623
            bits = 16;
624
            break;
625
        case PIX_FMT_UYYVYY411:
626
            bits = 12;
627
            break;
628
        default:
629
            bits = pf->depth * pf->nb_channels;
630
            break;
631
        }
632
        break;
633
    case FF_PIXEL_PLANAR:
634
        if (desc->log2_chroma_w == 0 && desc->log2_chroma_h == 0) {
635
            bits = pf->depth * pf->nb_channels;
636
        } else {
637
            bits = pf->depth + ((2 * pf->depth) >>
638
                                (desc->log2_chroma_w + desc->log2_chroma_h));
639
        }
640
        break;
641
    case FF_PIXEL_PALETTE:
642
        bits = 8;
643
        break;
644
    default:
645
        bits = -1;
646
        break;
647
    }
648
    return bits;
649
}
650

    
651
static enum PixelFormat avcodec_find_best_pix_fmt1(int64_t pix_fmt_mask,
652
                                      enum PixelFormat src_pix_fmt,
653
                                      int has_alpha,
654
                                      int loss_mask)
655
{
656
    int dist, i, loss, min_dist;
657
    enum PixelFormat dst_pix_fmt;
658

    
659
    /* find exact color match with smallest size */
660
    dst_pix_fmt = PIX_FMT_NONE;
661
    min_dist = 0x7fffffff;
662
    for(i = 0;i < PIX_FMT_NB; i++) {
663
        if (pix_fmt_mask & (1ULL << i)) {
664
            loss = avcodec_get_pix_fmt_loss(i, src_pix_fmt, has_alpha) & loss_mask;
665
            if (loss == 0) {
666
                dist = avg_bits_per_pixel(i);
667
                if (dist < min_dist) {
668
                    min_dist = dist;
669
                    dst_pix_fmt = i;
670
                }
671
            }
672
        }
673
    }
674
    return dst_pix_fmt;
675
}
676

    
677
enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt,
678
                              int has_alpha, int *loss_ptr)
679
{
680
    enum PixelFormat dst_pix_fmt;
681
    int loss_mask, i;
682
    static const int loss_mask_order[] = {
683
        ~0, /* no loss first */
684
        ~FF_LOSS_ALPHA,
685
        ~FF_LOSS_RESOLUTION,
686
        ~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
687
        ~FF_LOSS_COLORQUANT,
688
        ~FF_LOSS_DEPTH,
689
        0,
690
    };
691

    
692
    /* try with successive loss */
693
    i = 0;
694
    for(;;) {
695
        loss_mask = loss_mask_order[i++];
696
        dst_pix_fmt = avcodec_find_best_pix_fmt1(pix_fmt_mask, src_pix_fmt,
697
                                                 has_alpha, loss_mask);
698
        if (dst_pix_fmt >= 0)
699
            goto found;
700
        if (loss_mask == 0)
701
            break;
702
    }
703
    return PIX_FMT_NONE;
704
 found:
705
    if (loss_ptr)
706
        *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
707
    return dst_pix_fmt;
708
}
709

    
710
#if LIBAVCODEC_VERSION_MAJOR < 53
711
void ff_img_copy_plane(uint8_t *dst, int dst_wrap,
712
                           const uint8_t *src, int src_wrap,
713
                           int width, int height)
714
{
715
    av_image_copy_plane(dst, dst_wrap, src, src_wrap, width, height);
716
}
717

    
718
int ff_get_plane_bytewidth(enum PixelFormat pix_fmt, int width, int plane)
719
{
720
    return av_image_get_linesize(pix_fmt, width, plane);
721
}
722

    
723
void av_picture_data_copy(uint8_t *dst_data[4], int dst_linesize[4],
724
                          uint8_t *src_data[4], int src_linesize[4],
725
                          enum PixelFormat pix_fmt, int width, int height)
726
{
727
    av_image_copy(dst_data, dst_linesize, src_data, src_linesize,
728
                  pix_fmt, width, height);
729
}
730
#endif
731

    
732
void av_picture_copy(AVPicture *dst, const AVPicture *src,
733
                     enum PixelFormat pix_fmt, int width, int height)
734
{
735
    av_image_copy(dst->data, dst->linesize, src->data,
736
                  src->linesize, pix_fmt, width, height);
737
}
738

    
739
/* 2x2 -> 1x1 */
740
void ff_shrink22(uint8_t *dst, int dst_wrap,
741
                     const uint8_t *src, int src_wrap,
742
                     int width, int height)
743
{
744
    int w;
745
    const uint8_t *s1, *s2;
746
    uint8_t *d;
747

    
748
    for(;height > 0; height--) {
749
        s1 = src;
750
        s2 = s1 + src_wrap;
751
        d = dst;
752
        for(w = width;w >= 4; w-=4) {
753
            d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
754
            d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
755
            d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
756
            d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
757
            s1 += 8;
758
            s2 += 8;
759
            d += 4;
760
        }
761
        for(;w > 0; w--) {
762
            d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
763
            s1 += 2;
764
            s2 += 2;
765
            d++;
766
        }
767
        src += 2 * src_wrap;
768
        dst += dst_wrap;
769
    }
770
}
771

    
772
/* 4x4 -> 1x1 */
773
void ff_shrink44(uint8_t *dst, int dst_wrap,
774
                     const uint8_t *src, int src_wrap,
775
                     int width, int height)
776
{
777
    int w;
778
    const uint8_t *s1, *s2, *s3, *s4;
779
    uint8_t *d;
780

    
781
    for(;height > 0; height--) {
782
        s1 = src;
783
        s2 = s1 + src_wrap;
784
        s3 = s2 + src_wrap;
785
        s4 = s3 + src_wrap;
786
        d = dst;
787
        for(w = width;w > 0; w--) {
788
            d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
789
                    s2[0] + s2[1] + s2[2] + s2[3] +
790
                    s3[0] + s3[1] + s3[2] + s3[3] +
791
                    s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
792
            s1 += 4;
793
            s2 += 4;
794
            s3 += 4;
795
            s4 += 4;
796
            d++;
797
        }
798
        src += 4 * src_wrap;
799
        dst += dst_wrap;
800
    }
801
}
802

    
803
/* 8x8 -> 1x1 */
804
void ff_shrink88(uint8_t *dst, int dst_wrap,
805
                     const uint8_t *src, int src_wrap,
806
                     int width, int height)
807
{
808
    int w, i;
809

    
810
    for(;height > 0; height--) {
811
        for(w = width;w > 0; w--) {
812
            int tmp=0;
813
            for(i=0; i<8; i++){
814
                tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7];
815
                src += src_wrap;
816
            }
817
            *(dst++) = (tmp + 32)>>6;
818
            src += 8 - 8*src_wrap;
819
        }
820
        src += 8*src_wrap - 8*width;
821
        dst += dst_wrap - width;
822
    }
823
}
824

    
825

    
826
int avpicture_alloc(AVPicture *picture,
827
                    enum PixelFormat pix_fmt, int width, int height)
828
{
829
    int size;
830
    void *ptr;
831

    
832
    size = avpicture_fill(picture, NULL, pix_fmt, width, height);
833
    if(size<0)
834
        goto fail;
835
    ptr = av_malloc(size);
836
    if (!ptr)
837
        goto fail;
838
    avpicture_fill(picture, ptr, pix_fmt, width, height);
839
    if(picture->data[1] && !picture->data[2])
840
        ff_set_systematic_pal2((uint32_t*)picture->data[1], pix_fmt);
841

    
842
    return 0;
843
 fail:
844
    memset(picture, 0, sizeof(AVPicture));
845
    return -1;
846
}
847

    
848
void avpicture_free(AVPicture *picture)
849
{
850
    av_free(picture->data[0]);
851
}
852

    
853
/* return true if yuv planar */
854
static inline int is_yuv_planar(const PixFmtInfo *ps)
855
{
856
    return (ps->color_type == FF_COLOR_YUV ||
857
            ps->color_type == FF_COLOR_YUV_JPEG) &&
858
        ps->pixel_type == FF_PIXEL_PLANAR;
859
}
860

    
861
int av_picture_crop(AVPicture *dst, const AVPicture *src,
862
                    enum PixelFormat pix_fmt, int top_band, int left_band)
863
{
864
    int y_shift;
865
    int x_shift;
866

    
867
    if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB || !is_yuv_planar(&pix_fmt_info[pix_fmt]))
868
        return -1;
869

    
870
    y_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_h;
871
    x_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_w;
872

    
873
    dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
874
    dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift);
875
    dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift);
876

    
877
    dst->linesize[0] = src->linesize[0];
878
    dst->linesize[1] = src->linesize[1];
879
    dst->linesize[2] = src->linesize[2];
880
    return 0;
881
}
882

    
883
int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
884
                   enum PixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright,
885
            int *color)
886
{
887
    uint8_t *optr;
888
    int y_shift;
889
    int x_shift;
890
    int yheight;
891
    int i, y;
892

    
893
    if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB ||
894
        !is_yuv_planar(&pix_fmt_info[pix_fmt])) return -1;
895

    
896
    for (i = 0; i < 3; i++) {
897
        x_shift = i ? av_pix_fmt_descriptors[pix_fmt].log2_chroma_w : 0;
898
        y_shift = i ? av_pix_fmt_descriptors[pix_fmt].log2_chroma_h : 0;
899

    
900
        if (padtop || padleft) {
901
            memset(dst->data[i], color[i],
902
                dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift));
903
        }
904

    
905
        if (padleft || padright) {
906
            optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
907
                (dst->linesize[i] - (padright >> x_shift));
908
            yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
909
            for (y = 0; y < yheight; y++) {
910
                memset(optr, color[i], (padleft + padright) >> x_shift);
911
                optr += dst->linesize[i];
912
            }
913
        }
914

    
915
        if (src) { /* first line */
916
            uint8_t *iptr = src->data[i];
917
            optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
918
                    (padleft >> x_shift);
919
            memcpy(optr, iptr, (width - padleft - padright) >> x_shift);
920
            iptr += src->linesize[i];
921
            optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
922
                (dst->linesize[i] - (padright >> x_shift));
923
            yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
924
            for (y = 0; y < yheight; y++) {
925
                memset(optr, color[i], (padleft + padright) >> x_shift);
926
                memcpy(optr + ((padleft + padright) >> x_shift), iptr,
927
                       (width - padleft - padright) >> x_shift);
928
                iptr += src->linesize[i];
929
                optr += dst->linesize[i];
930
            }
931
        }
932

    
933
        if (padbottom || padright) {
934
            optr = dst->data[i] + dst->linesize[i] *
935
                ((height - padbottom) >> y_shift) - (padright >> x_shift);
936
            memset(optr, color[i],dst->linesize[i] *
937
                (padbottom >> y_shift) + (padright >> x_shift));
938
        }
939
    }
940
    return 0;
941
}
942

    
943
/* NOTE: we scan all the pixels to have an exact information */
944
static int get_alpha_info_pal8(const AVPicture *src, int width, int height)
945
{
946
    const unsigned char *p;
947
    int src_wrap, ret, x, y;
948
    unsigned int a;
949
    uint32_t *palette = (uint32_t *)src->data[1];
950

    
951
    p = src->data[0];
952
    src_wrap = src->linesize[0] - width;
953
    ret = 0;
954
    for(y=0;y<height;y++) {
955
        for(x=0;x<width;x++) {
956
            a = palette[p[0]] >> 24;
957
            if (a == 0x00) {
958
                ret |= FF_ALPHA_TRANSP;
959
            } else if (a != 0xff) {
960
                ret |= FF_ALPHA_SEMI_TRANSP;
961
            }
962
            p++;
963
        }
964
        p += src_wrap;
965
    }
966
    return ret;
967
}
968

    
969
int img_get_alpha_info(const AVPicture *src,
970
                       enum PixelFormat pix_fmt, int width, int height)
971
{
972
    const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
973
    int ret;
974

    
975
    /* no alpha can be represented in format */
976
    if (!pf->is_alpha)
977
        return 0;
978
    switch(pix_fmt) {
979
    case PIX_FMT_PAL8:
980
        ret = get_alpha_info_pal8(src, width, height);
981
        break;
982
    default:
983
        /* we do not know, so everything is indicated */
984
        ret = FF_ALPHA_TRANSP | FF_ALPHA_SEMI_TRANSP;
985
        break;
986
    }
987
    return ret;
988
}
989

    
990
#if !(HAVE_MMX && HAVE_YASM)
991
/* filter parameters: [-1 4 2 4 -1] // 8 */
992
static void deinterlace_line_c(uint8_t *dst,
993
                             const uint8_t *lum_m4, const uint8_t *lum_m3,
994
                             const uint8_t *lum_m2, const uint8_t *lum_m1,
995
                             const uint8_t *lum,
996
                             int size)
997
{
998
    uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
999
    int sum;
1000

    
1001
    for(;size > 0;size--) {
1002
        sum = -lum_m4[0];
1003
        sum += lum_m3[0] << 2;
1004
        sum += lum_m2[0] << 1;
1005
        sum += lum_m1[0] << 2;
1006
        sum += -lum[0];
1007
        dst[0] = cm[(sum + 4) >> 3];
1008
        lum_m4++;
1009
        lum_m3++;
1010
        lum_m2++;
1011
        lum_m1++;
1012
        lum++;
1013
        dst++;
1014
    }
1015
}
1016

    
1017
static void deinterlace_line_inplace_c(uint8_t *lum_m4, uint8_t *lum_m3,
1018
                                       uint8_t *lum_m2, uint8_t *lum_m1,
1019
                                       uint8_t *lum, int size)
1020
{
1021
    uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
1022
    int sum;
1023

    
1024
    for(;size > 0;size--) {
1025
        sum = -lum_m4[0];
1026
        sum += lum_m3[0] << 2;
1027
        sum += lum_m2[0] << 1;
1028
        lum_m4[0]=lum_m2[0];
1029
        sum += lum_m1[0] << 2;
1030
        sum += -lum[0];
1031
        lum_m2[0] = cm[(sum + 4) >> 3];
1032
        lum_m4++;
1033
        lum_m3++;
1034
        lum_m2++;
1035
        lum_m1++;
1036
        lum++;
1037
    }
1038
}
1039
#endif
1040

    
1041
/* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
1042
   top field is copied as is, but the bottom field is deinterlaced
1043
   against the top field. */
1044
static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap,
1045
                                    const uint8_t *src1, int src_wrap,
1046
                                    int width, int height)
1047
{
1048
    const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
1049
    int y;
1050

    
1051
    src_m2 = src1;
1052
    src_m1 = src1;
1053
    src_0=&src_m1[src_wrap];
1054
    src_p1=&src_0[src_wrap];
1055
    src_p2=&src_p1[src_wrap];
1056
    for(y=0;y<(height-2);y+=2) {
1057
        memcpy(dst,src_m1,width);
1058
        dst += dst_wrap;
1059
        deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width);
1060
        src_m2 = src_0;
1061
        src_m1 = src_p1;
1062
        src_0 = src_p2;
1063
        src_p1 += 2*src_wrap;
1064
        src_p2 += 2*src_wrap;
1065
        dst += dst_wrap;
1066
    }
1067
    memcpy(dst,src_m1,width);
1068
    dst += dst_wrap;
1069
    /* do last line */
1070
    deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width);
1071
}
1072

    
1073
static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap,
1074
                                             int width, int height)
1075
{
1076
    uint8_t *src_m1, *src_0, *src_p1, *src_p2;
1077
    int y;
1078
    uint8_t *buf;
1079
    buf = (uint8_t*)av_malloc(width);
1080

    
1081
    src_m1 = src1;
1082
    memcpy(buf,src_m1,width);
1083
    src_0=&src_m1[src_wrap];
1084
    src_p1=&src_0[src_wrap];
1085
    src_p2=&src_p1[src_wrap];
1086
    for(y=0;y<(height-2);y+=2) {
1087
        deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width);
1088
        src_m1 = src_p1;
1089
        src_0 = src_p2;
1090
        src_p1 += 2*src_wrap;
1091
        src_p2 += 2*src_wrap;
1092
    }
1093
    /* do last line */
1094
    deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width);
1095
    av_free(buf);
1096
}
1097

    
1098
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1099
                          enum PixelFormat pix_fmt, int width, int height)
1100
{
1101
    int i;
1102

    
1103
    if (pix_fmt != PIX_FMT_YUV420P &&
1104
        pix_fmt != PIX_FMT_YUVJ420P &&
1105
        pix_fmt != PIX_FMT_YUV422P &&
1106
        pix_fmt != PIX_FMT_YUVJ422P &&
1107
        pix_fmt != PIX_FMT_YUV444P &&
1108
        pix_fmt != PIX_FMT_YUV411P &&
1109
        pix_fmt != PIX_FMT_GRAY8)
1110
        return -1;
1111
    if ((width & 3) != 0 || (height & 3) != 0)
1112
        return -1;
1113

    
1114
    for(i=0;i<3;i++) {
1115
        if (i == 1) {
1116
            switch(pix_fmt) {
1117
            case PIX_FMT_YUVJ420P:
1118
            case PIX_FMT_YUV420P:
1119
                width >>= 1;
1120
                height >>= 1;
1121
                break;
1122
            case PIX_FMT_YUV422P:
1123
            case PIX_FMT_YUVJ422P:
1124
                width >>= 1;
1125
                break;
1126
            case PIX_FMT_YUV411P:
1127
                width >>= 2;
1128
                break;
1129
            default:
1130
                break;
1131
            }
1132
            if (pix_fmt == PIX_FMT_GRAY8) {
1133
                break;
1134
            }
1135
        }
1136
        if (src == dst) {
1137
            deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i],
1138
                                 width, height);
1139
        } else {
1140
            deinterlace_bottom_field(dst->data[i],dst->linesize[i],
1141
                                        src->data[i], src->linesize[i],
1142
                                        width, height);
1143
        }
1144
    }
1145
    emms_c();
1146
    return 0;
1147
}
1148