990 lines
29 KiB
C
990 lines
29 KiB
C
/*
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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/common.h"
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#include "libavutil/pixdesc.h"
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#include "libavutil/imgutils.h"
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#if HAVE_MMX_EXTERNAL
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#include "x86/dsputil_mmx.h"
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#endif
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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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#if HAVE_MMX_EXTERNAL
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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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#define pixdesc_has_alpha(pixdesc) \
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((pixdesc)->nb_components == 2 || (pixdesc)->nb_components == 4 || (pixdesc)->flags & PIX_FMT_PAL)
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typedef struct PixFmtInfo {
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uint8_t color_type; /**< color type (see FF_COLOR_xxx constants) */
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uint8_t padded_size; /**< padded size in bits if different from the non-padded size */
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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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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV422P] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV444P] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUYV422] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_UYVY422] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV410P] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV411P] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV440P] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV420P9LE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV422P9LE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV444P9LE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV420P9BE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV422P9BE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV444P9BE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV420P10LE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV422P10LE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV444P10LE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV420P10BE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV422P10BE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV444P10BE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV420P12LE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV422P12LE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV444P12LE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV420P12BE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV422P12BE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV444P12BE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV420P14LE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV422P14LE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV444P14LE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV420P14BE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV422P14BE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV444P14BE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV420P16LE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV422P16LE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV444P16LE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV420P16BE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV422P16BE] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUV444P16BE] = {
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.color_type = FF_COLOR_YUV,
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},
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/* YUV formats with alpha plane */
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[PIX_FMT_YUVA420P] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUVA422P] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_YUVA444P] = {
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.color_type = FF_COLOR_YUV,
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},
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/* JPEG YUV */
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[PIX_FMT_YUVJ420P] = {
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.color_type = FF_COLOR_YUV_JPEG,
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},
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[PIX_FMT_YUVJ422P] = {
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.color_type = FF_COLOR_YUV_JPEG,
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},
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[PIX_FMT_YUVJ444P] = {
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.color_type = FF_COLOR_YUV_JPEG,
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},
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[PIX_FMT_YUVJ440P] = {
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.color_type = FF_COLOR_YUV_JPEG,
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},
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/* RGB formats */
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[PIX_FMT_RGB24] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_BGR24] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_ARGB] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_RGB48BE] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_RGB48LE] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_RGBA64BE] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_RGBA64LE] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_RGB565BE] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_RGB565LE] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_RGB555BE] = {
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.color_type = FF_COLOR_RGB,
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.padded_size = 16,
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},
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[PIX_FMT_RGB555LE] = {
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.color_type = FF_COLOR_RGB,
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.padded_size = 16,
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},
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[PIX_FMT_RGB444BE] = {
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.color_type = FF_COLOR_RGB,
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.padded_size = 16,
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},
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[PIX_FMT_RGB444LE] = {
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.color_type = FF_COLOR_RGB,
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.padded_size = 16,
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},
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/* gray / mono formats */
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[PIX_FMT_GRAY16BE] = {
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.color_type = FF_COLOR_GRAY,
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},
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[PIX_FMT_GRAY16LE] = {
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.color_type = FF_COLOR_GRAY,
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},
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[PIX_FMT_GRAY8] = {
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.color_type = FF_COLOR_GRAY,
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},
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[PIX_FMT_GRAY8A] = {
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.color_type = FF_COLOR_GRAY,
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},
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[PIX_FMT_MONOWHITE] = {
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.color_type = FF_COLOR_GRAY,
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},
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[PIX_FMT_MONOBLACK] = {
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.color_type = FF_COLOR_GRAY,
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},
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/* paletted formats */
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[PIX_FMT_PAL8] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_UYYVYY411] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_ABGR] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_BGR48BE] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_BGR48LE] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_BGRA64BE] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_BGRA64LE] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_BGR565BE] = {
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.color_type = FF_COLOR_RGB,
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.padded_size = 16,
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},
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[PIX_FMT_BGR565LE] = {
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.color_type = FF_COLOR_RGB,
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.padded_size = 16,
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},
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[PIX_FMT_BGR555BE] = {
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.color_type = FF_COLOR_RGB,
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.padded_size = 16,
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},
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[PIX_FMT_BGR555LE] = {
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.color_type = FF_COLOR_RGB,
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.padded_size = 16,
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},
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[PIX_FMT_BGR444BE] = {
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.color_type = FF_COLOR_RGB,
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.padded_size = 16,
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},
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[PIX_FMT_BGR444LE] = {
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.color_type = FF_COLOR_RGB,
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.padded_size = 16,
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},
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[PIX_FMT_RGB8] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_RGB4] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_RGB4_BYTE] = {
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.color_type = FF_COLOR_RGB,
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.padded_size = 8,
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},
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[PIX_FMT_BGR8] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_BGR4] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_BGR4_BYTE] = {
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.color_type = FF_COLOR_RGB,
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.padded_size = 8,
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},
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[PIX_FMT_NV12] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_NV21] = {
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.color_type = FF_COLOR_YUV,
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},
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[PIX_FMT_BGRA] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_RGBA] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_GBRP] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_GBRP9BE] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_GBRP9LE] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_GBRP10BE] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_GBRP10LE] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_GBRP12BE] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_GBRP12LE] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_GBRP14BE] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_GBRP14LE] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_GBRP16BE] = {
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.color_type = FF_COLOR_RGB,
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},
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[PIX_FMT_GBRP16LE] = {
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.color_type = FF_COLOR_RGB,
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},
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};
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void avcodec_get_chroma_sub_sample(enum PixelFormat pix_fmt, int *h_shift, int *v_shift)
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{
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*h_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_w;
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*v_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_h;
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}
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int ff_is_hwaccel_pix_fmt(enum PixelFormat pix_fmt)
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{
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return av_pix_fmt_descriptors[pix_fmt].flags & PIX_FMT_HWACCEL;
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}
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int avpicture_fill(AVPicture *picture, uint8_t *ptr,
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enum PixelFormat pix_fmt, int width, int height)
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{
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return av_image_fill_arrays(picture->data, picture->linesize,
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ptr, pix_fmt, width, height, 1);
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}
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int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width, int height,
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unsigned char *dest, int dest_size)
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{
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return av_image_copy_to_buffer(dest, dest_size,
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(const uint8_t * const*)src->data, src->linesize,
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pix_fmt, width, height, 1);
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}
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int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height)
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{
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return av_image_get_buffer_size(pix_fmt, width, height, 1);
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}
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static int get_pix_fmt_depth(int *min, int *max, enum PixelFormat pix_fmt)
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{
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const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
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int i;
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if (!desc->nb_components) {
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*min = *max = 0;
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return AVERROR(EINVAL);
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}
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*min = INT_MAX, *max = -INT_MAX;
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for (i = 0; i < desc->nb_components; i++) {
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*min = FFMIN(desc->comp[i].depth_minus1+1, *min);
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*max = FFMAX(desc->comp[i].depth_minus1+1, *max);
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}
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return 0;
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}
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int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt,
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int has_alpha)
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{
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const PixFmtInfo *pf, *ps;
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const AVPixFmtDescriptor *src_desc;
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const AVPixFmtDescriptor *dst_desc;
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int src_min_depth, src_max_depth, dst_min_depth, dst_max_depth;
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int ret, loss;
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if (dst_pix_fmt >= PIX_FMT_NB || dst_pix_fmt <= PIX_FMT_NONE)
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return ~0;
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src_desc = &av_pix_fmt_descriptors[src_pix_fmt];
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dst_desc = &av_pix_fmt_descriptors[dst_pix_fmt];
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ps = &pix_fmt_info[src_pix_fmt];
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/* compute loss */
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loss = 0;
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if ((ret = get_pix_fmt_depth(&src_min_depth, &src_max_depth, src_pix_fmt)) < 0)
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return ret;
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if ((ret = get_pix_fmt_depth(&dst_min_depth, &dst_max_depth, dst_pix_fmt)) < 0)
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return ret;
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if (dst_min_depth < src_min_depth ||
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dst_max_depth < src_max_depth)
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loss |= FF_LOSS_DEPTH;
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if (dst_desc->log2_chroma_w > src_desc->log2_chroma_w ||
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dst_desc->log2_chroma_h > src_desc->log2_chroma_h)
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loss |= FF_LOSS_RESOLUTION;
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pf = &pix_fmt_info[dst_pix_fmt];
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switch(pf->color_type) {
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case FF_COLOR_RGB:
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if (ps->color_type != FF_COLOR_RGB &&
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ps->color_type != FF_COLOR_GRAY)
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loss |= FF_LOSS_COLORSPACE;
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break;
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case FF_COLOR_GRAY:
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if (ps->color_type != FF_COLOR_GRAY)
|
|
loss |= FF_LOSS_COLORSPACE;
|
|
break;
|
|
case FF_COLOR_YUV:
|
|
if (ps->color_type != FF_COLOR_YUV)
|
|
loss |= FF_LOSS_COLORSPACE;
|
|
break;
|
|
case FF_COLOR_YUV_JPEG:
|
|
if (ps->color_type != FF_COLOR_YUV_JPEG &&
|
|
ps->color_type != FF_COLOR_YUV &&
|
|
ps->color_type != FF_COLOR_GRAY)
|
|
loss |= FF_LOSS_COLORSPACE;
|
|
break;
|
|
default:
|
|
/* fail safe test */
|
|
if (ps->color_type != pf->color_type)
|
|
loss |= FF_LOSS_COLORSPACE;
|
|
break;
|
|
}
|
|
if (pf->color_type == FF_COLOR_GRAY &&
|
|
ps->color_type != FF_COLOR_GRAY)
|
|
loss |= FF_LOSS_CHROMA;
|
|
if (!pixdesc_has_alpha(dst_desc) && (pixdesc_has_alpha(src_desc) && has_alpha))
|
|
loss |= FF_LOSS_ALPHA;
|
|
if (dst_pix_fmt == PIX_FMT_PAL8 &&
|
|
(src_pix_fmt != PIX_FMT_PAL8 && (ps->color_type != FF_COLOR_GRAY || (pixdesc_has_alpha(src_desc) && has_alpha))))
|
|
loss |= FF_LOSS_COLORQUANT;
|
|
|
|
return loss;
|
|
}
|
|
|
|
static int avg_bits_per_pixel(enum PixelFormat pix_fmt)
|
|
{
|
|
const PixFmtInfo *info = &pix_fmt_info[pix_fmt];
|
|
const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
|
|
|
|
return info->padded_size ?
|
|
info->padded_size : av_get_bits_per_pixel(desc);
|
|
}
|
|
|
|
#if FF_API_FIND_BEST_PIX_FMT
|
|
enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt,
|
|
int has_alpha, int *loss_ptr)
|
|
{
|
|
enum PixelFormat dst_pix_fmt;
|
|
int i;
|
|
|
|
if (loss_ptr) /* all losses count (for backward compatibility) */
|
|
*loss_ptr = 0;
|
|
|
|
dst_pix_fmt = PIX_FMT_NONE; /* so first iteration doesn't have to be treated special */
|
|
for(i = 0; i< FFMIN(PIX_FMT_NB, 64); i++){
|
|
if (pix_fmt_mask & (1ULL << i))
|
|
dst_pix_fmt = avcodec_find_best_pix_fmt_of_2(dst_pix_fmt, i, src_pix_fmt, has_alpha, loss_ptr);
|
|
}
|
|
return dst_pix_fmt;
|
|
}
|
|
#endif /* FF_API_FIND_BEST_PIX_FMT */
|
|
|
|
enum PixelFormat avcodec_find_best_pix_fmt_of_2(enum PixelFormat dst_pix_fmt1, enum PixelFormat dst_pix_fmt2,
|
|
enum PixelFormat src_pix_fmt, int has_alpha, int *loss_ptr)
|
|
{
|
|
enum PixelFormat dst_pix_fmt;
|
|
int loss1, loss2, loss_order1, loss_order2, i, loss_mask;
|
|
static const int loss_mask_order[] = {
|
|
~0, /* no loss first */
|
|
~FF_LOSS_ALPHA,
|
|
~FF_LOSS_RESOLUTION,
|
|
~FF_LOSS_COLORSPACE,
|
|
~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
|
|
~FF_LOSS_COLORQUANT,
|
|
~FF_LOSS_DEPTH,
|
|
~(FF_LOSS_DEPTH|FF_LOSS_COLORSPACE),
|
|
~(FF_LOSS_RESOLUTION | FF_LOSS_DEPTH | FF_LOSS_COLORSPACE | FF_LOSS_ALPHA |
|
|
FF_LOSS_COLORQUANT | FF_LOSS_CHROMA),
|
|
0x80000, //non zero entry that combines all loss variants including future additions
|
|
0,
|
|
};
|
|
|
|
loss_mask= loss_ptr?~*loss_ptr:~0; /* use loss mask if provided */
|
|
dst_pix_fmt = PIX_FMT_NONE;
|
|
loss1 = avcodec_get_pix_fmt_loss(dst_pix_fmt1, src_pix_fmt, has_alpha) & loss_mask;
|
|
loss2 = avcodec_get_pix_fmt_loss(dst_pix_fmt2, src_pix_fmt, has_alpha) & loss_mask;
|
|
|
|
/* try with successive loss */
|
|
for(i = 0;loss_mask_order[i] != 0 && dst_pix_fmt == PIX_FMT_NONE;i++) {
|
|
loss_order1 = loss1 & loss_mask_order[i];
|
|
loss_order2 = loss2 & loss_mask_order[i];
|
|
|
|
if (loss_order1 == 0 && loss_order2 == 0){ /* use format with smallest depth */
|
|
dst_pix_fmt = avg_bits_per_pixel(dst_pix_fmt2) < avg_bits_per_pixel(dst_pix_fmt1) ? dst_pix_fmt2 : dst_pix_fmt1;
|
|
} else if (loss_order1 == 0 || loss_order2 == 0) { /* use format with no loss */
|
|
dst_pix_fmt = loss_order2 ? dst_pix_fmt1 : dst_pix_fmt2;
|
|
}
|
|
}
|
|
|
|
if (loss_ptr)
|
|
*loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
|
|
return dst_pix_fmt;
|
|
}
|
|
|
|
#if AV_HAVE_INCOMPATIBLE_FORK_ABI
|
|
enum PixelFormat avcodec_find_best_pix_fmt2(enum PixelFormat *pix_fmt_list,
|
|
enum PixelFormat src_pix_fmt,
|
|
int has_alpha, int *loss_ptr){
|
|
return avcodec_find_best_pix_fmt_of_list(pix_fmt_list, src_pix_fmt, has_alpha, loss_ptr);
|
|
}
|
|
#else
|
|
enum PixelFormat avcodec_find_best_pix_fmt2(enum PixelFormat dst_pix_fmt1, enum PixelFormat dst_pix_fmt2,
|
|
enum PixelFormat src_pix_fmt, int has_alpha, int *loss_ptr)
|
|
{
|
|
return avcodec_find_best_pix_fmt_of_2(dst_pix_fmt1, dst_pix_fmt2, src_pix_fmt, has_alpha, loss_ptr);
|
|
}
|
|
#endif
|
|
|
|
enum PixelFormat avcodec_find_best_pix_fmt_of_list(enum PixelFormat *pix_fmt_list,
|
|
enum PixelFormat src_pix_fmt,
|
|
int has_alpha, int *loss_ptr){
|
|
int i;
|
|
|
|
enum PixelFormat best = PIX_FMT_NONE;
|
|
|
|
for(i=0; pix_fmt_list[i] != PIX_FMT_NONE; i++)
|
|
best = avcodec_find_best_pix_fmt_of_2(best, pix_fmt_list[i], src_pix_fmt, has_alpha, loss_ptr);
|
|
|
|
return best;
|
|
}
|
|
|
|
void av_picture_copy(AVPicture *dst, const AVPicture *src,
|
|
enum PixelFormat pix_fmt, int width, int height)
|
|
{
|
|
av_image_copy(dst->data, dst->linesize, (const uint8_t **)src->data,
|
|
src->linesize, pix_fmt, width, height);
|
|
}
|
|
|
|
/* 2x2 -> 1x1 */
|
|
void ff_shrink22(uint8_t *dst, int dst_wrap,
|
|
const uint8_t *src, int src_wrap,
|
|
int width, int height)
|
|
{
|
|
int w;
|
|
const uint8_t *s1, *s2;
|
|
uint8_t *d;
|
|
|
|
for(;height > 0; height--) {
|
|
s1 = src;
|
|
s2 = s1 + src_wrap;
|
|
d = dst;
|
|
for(w = width;w >= 4; w-=4) {
|
|
d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
|
|
d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
|
|
d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
|
|
d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
|
|
s1 += 8;
|
|
s2 += 8;
|
|
d += 4;
|
|
}
|
|
for(;w > 0; w--) {
|
|
d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
|
|
s1 += 2;
|
|
s2 += 2;
|
|
d++;
|
|
}
|
|
src += 2 * src_wrap;
|
|
dst += dst_wrap;
|
|
}
|
|
}
|
|
|
|
/* 4x4 -> 1x1 */
|
|
void ff_shrink44(uint8_t *dst, int dst_wrap,
|
|
const uint8_t *src, int src_wrap,
|
|
int width, int height)
|
|
{
|
|
int w;
|
|
const uint8_t *s1, *s2, *s3, *s4;
|
|
uint8_t *d;
|
|
|
|
for(;height > 0; height--) {
|
|
s1 = src;
|
|
s2 = s1 + src_wrap;
|
|
s3 = s2 + src_wrap;
|
|
s4 = s3 + src_wrap;
|
|
d = dst;
|
|
for(w = width;w > 0; w--) {
|
|
d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
|
|
s2[0] + s2[1] + s2[2] + s2[3] +
|
|
s3[0] + s3[1] + s3[2] + s3[3] +
|
|
s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
|
|
s1 += 4;
|
|
s2 += 4;
|
|
s3 += 4;
|
|
s4 += 4;
|
|
d++;
|
|
}
|
|
src += 4 * src_wrap;
|
|
dst += dst_wrap;
|
|
}
|
|
}
|
|
|
|
/* 8x8 -> 1x1 */
|
|
void ff_shrink88(uint8_t *dst, int dst_wrap,
|
|
const uint8_t *src, int src_wrap,
|
|
int width, int height)
|
|
{
|
|
int w, i;
|
|
|
|
for(;height > 0; height--) {
|
|
for(w = width;w > 0; w--) {
|
|
int tmp=0;
|
|
for(i=0; i<8; i++){
|
|
tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7];
|
|
src += src_wrap;
|
|
}
|
|
*(dst++) = (tmp + 32)>>6;
|
|
src += 8 - 8*src_wrap;
|
|
}
|
|
src += 8*src_wrap - 8*width;
|
|
dst += dst_wrap - width;
|
|
}
|
|
}
|
|
|
|
|
|
int avpicture_alloc(AVPicture *picture,
|
|
enum PixelFormat pix_fmt, int width, int height)
|
|
{
|
|
int ret;
|
|
|
|
if ((ret = av_image_alloc(picture->data, picture->linesize, width, height, pix_fmt, 1)) < 0) {
|
|
memset(picture, 0, sizeof(AVPicture));
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void avpicture_free(AVPicture *picture)
|
|
{
|
|
av_free(picture->data[0]);
|
|
}
|
|
|
|
/* return true if yuv planar */
|
|
static inline int is_yuv_planar(enum PixelFormat fmt)
|
|
{
|
|
const PixFmtInfo *info = &pix_fmt_info[fmt];
|
|
const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[fmt];
|
|
int i;
|
|
int planes[4] = { 0 };
|
|
|
|
if (info->color_type != FF_COLOR_YUV &&
|
|
info->color_type != FF_COLOR_YUV_JPEG)
|
|
return 0;
|
|
|
|
/* set the used planes */
|
|
for (i = 0; i < desc->nb_components; i++)
|
|
planes[desc->comp[i].plane] = 1;
|
|
|
|
/* if there is an unused plane, the format is not planar */
|
|
for (i = 0; i < desc->nb_components; i++)
|
|
if (!planes[i])
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
int av_picture_crop(AVPicture *dst, const AVPicture *src,
|
|
enum PixelFormat pix_fmt, int top_band, int left_band)
|
|
{
|
|
int y_shift;
|
|
int x_shift;
|
|
|
|
if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB)
|
|
return -1;
|
|
|
|
y_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_h;
|
|
x_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_w;
|
|
|
|
if (is_yuv_planar(pix_fmt)) {
|
|
dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
|
|
dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift);
|
|
dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift);
|
|
} else{
|
|
if(top_band % (1<<y_shift) || left_band % (1<<x_shift))
|
|
return -1;
|
|
if(left_band) //FIXME add support for this too
|
|
return -1;
|
|
dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
|
|
}
|
|
|
|
dst->linesize[0] = src->linesize[0];
|
|
dst->linesize[1] = src->linesize[1];
|
|
dst->linesize[2] = src->linesize[2];
|
|
return 0;
|
|
}
|
|
|
|
int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
|
|
enum PixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright,
|
|
int *color)
|
|
{
|
|
uint8_t *optr;
|
|
int y_shift;
|
|
int x_shift;
|
|
int yheight;
|
|
int i, y;
|
|
|
|
if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB ||
|
|
!is_yuv_planar(pix_fmt)) return -1;
|
|
|
|
for (i = 0; i < 3; i++) {
|
|
x_shift = i ? av_pix_fmt_descriptors[pix_fmt].log2_chroma_w : 0;
|
|
y_shift = i ? av_pix_fmt_descriptors[pix_fmt].log2_chroma_h : 0;
|
|
|
|
if (padtop || padleft) {
|
|
memset(dst->data[i], color[i],
|
|
dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift));
|
|
}
|
|
|
|
if (padleft || padright) {
|
|
optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
|
|
(dst->linesize[i] - (padright >> x_shift));
|
|
yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
|
|
for (y = 0; y < yheight; y++) {
|
|
memset(optr, color[i], (padleft + padright) >> x_shift);
|
|
optr += dst->linesize[i];
|
|
}
|
|
}
|
|
|
|
if (src) { /* first line */
|
|
uint8_t *iptr = src->data[i];
|
|
optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
|
|
(padleft >> x_shift);
|
|
memcpy(optr, iptr, (width - padleft - padright) >> x_shift);
|
|
iptr += src->linesize[i];
|
|
optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
|
|
(dst->linesize[i] - (padright >> x_shift));
|
|
yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
|
|
for (y = 0; y < yheight; y++) {
|
|
memset(optr, color[i], (padleft + padright) >> x_shift);
|
|
memcpy(optr + ((padleft + padright) >> x_shift), iptr,
|
|
(width - padleft - padright) >> x_shift);
|
|
iptr += src->linesize[i];
|
|
optr += dst->linesize[i];
|
|
}
|
|
}
|
|
|
|
if (padbottom || padright) {
|
|
optr = dst->data[i] + dst->linesize[i] *
|
|
((height - padbottom) >> y_shift) - (padright >> x_shift);
|
|
memset(optr, color[i],dst->linesize[i] *
|
|
(padbottom >> y_shift) + (padright >> x_shift));
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#if !HAVE_MMX_EXTERNAL
|
|
/* filter parameters: [-1 4 2 4 -1] // 8 */
|
|
static void deinterlace_line_c(uint8_t *dst,
|
|
const uint8_t *lum_m4, const uint8_t *lum_m3,
|
|
const uint8_t *lum_m2, const uint8_t *lum_m1,
|
|
const uint8_t *lum,
|
|
int size)
|
|
{
|
|
uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
|
|
int sum;
|
|
|
|
for(;size > 0;size--) {
|
|
sum = -lum_m4[0];
|
|
sum += lum_m3[0] << 2;
|
|
sum += lum_m2[0] << 1;
|
|
sum += lum_m1[0] << 2;
|
|
sum += -lum[0];
|
|
dst[0] = cm[(sum + 4) >> 3];
|
|
lum_m4++;
|
|
lum_m3++;
|
|
lum_m2++;
|
|
lum_m1++;
|
|
lum++;
|
|
dst++;
|
|
}
|
|
}
|
|
|
|
static void deinterlace_line_inplace_c(uint8_t *lum_m4, uint8_t *lum_m3,
|
|
uint8_t *lum_m2, uint8_t *lum_m1,
|
|
uint8_t *lum, int size)
|
|
{
|
|
uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
|
|
int sum;
|
|
|
|
for(;size > 0;size--) {
|
|
sum = -lum_m4[0];
|
|
sum += lum_m3[0] << 2;
|
|
sum += lum_m2[0] << 1;
|
|
lum_m4[0]=lum_m2[0];
|
|
sum += lum_m1[0] << 2;
|
|
sum += -lum[0];
|
|
lum_m2[0] = cm[(sum + 4) >> 3];
|
|
lum_m4++;
|
|
lum_m3++;
|
|
lum_m2++;
|
|
lum_m1++;
|
|
lum++;
|
|
}
|
|
}
|
|
#endif /* !HAVE_MMX_EXTERNAL */
|
|
|
|
/* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
|
|
top field is copied as is, but the bottom field is deinterlaced
|
|
against the top field. */
|
|
static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap,
|
|
const uint8_t *src1, int src_wrap,
|
|
int width, int height)
|
|
{
|
|
const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
|
|
int y;
|
|
|
|
src_m2 = src1;
|
|
src_m1 = src1;
|
|
src_0=&src_m1[src_wrap];
|
|
src_p1=&src_0[src_wrap];
|
|
src_p2=&src_p1[src_wrap];
|
|
for(y=0;y<(height-2);y+=2) {
|
|
memcpy(dst,src_m1,width);
|
|
dst += dst_wrap;
|
|
deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width);
|
|
src_m2 = src_0;
|
|
src_m1 = src_p1;
|
|
src_0 = src_p2;
|
|
src_p1 += 2*src_wrap;
|
|
src_p2 += 2*src_wrap;
|
|
dst += dst_wrap;
|
|
}
|
|
memcpy(dst,src_m1,width);
|
|
dst += dst_wrap;
|
|
/* do last line */
|
|
deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width);
|
|
}
|
|
|
|
static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap,
|
|
int width, int height)
|
|
{
|
|
uint8_t *src_m1, *src_0, *src_p1, *src_p2;
|
|
int y;
|
|
uint8_t *buf;
|
|
buf = av_malloc(width);
|
|
|
|
src_m1 = src1;
|
|
memcpy(buf,src_m1,width);
|
|
src_0=&src_m1[src_wrap];
|
|
src_p1=&src_0[src_wrap];
|
|
src_p2=&src_p1[src_wrap];
|
|
for(y=0;y<(height-2);y+=2) {
|
|
deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width);
|
|
src_m1 = src_p1;
|
|
src_0 = src_p2;
|
|
src_p1 += 2*src_wrap;
|
|
src_p2 += 2*src_wrap;
|
|
}
|
|
/* do last line */
|
|
deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width);
|
|
av_free(buf);
|
|
}
|
|
|
|
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
|
|
enum PixelFormat pix_fmt, int width, int height)
|
|
{
|
|
int i;
|
|
|
|
if (pix_fmt != PIX_FMT_YUV420P &&
|
|
pix_fmt != PIX_FMT_YUVJ420P &&
|
|
pix_fmt != PIX_FMT_YUV422P &&
|
|
pix_fmt != PIX_FMT_YUVJ422P &&
|
|
pix_fmt != PIX_FMT_YUV444P &&
|
|
pix_fmt != PIX_FMT_YUV411P &&
|
|
pix_fmt != PIX_FMT_GRAY8)
|
|
return -1;
|
|
if ((width & 3) != 0 || (height & 3) != 0)
|
|
return -1;
|
|
|
|
for(i=0;i<3;i++) {
|
|
if (i == 1) {
|
|
switch(pix_fmt) {
|
|
case PIX_FMT_YUVJ420P:
|
|
case PIX_FMT_YUV420P:
|
|
width >>= 1;
|
|
height >>= 1;
|
|
break;
|
|
case PIX_FMT_YUV422P:
|
|
case PIX_FMT_YUVJ422P:
|
|
width >>= 1;
|
|
break;
|
|
case PIX_FMT_YUV411P:
|
|
width >>= 2;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (pix_fmt == PIX_FMT_GRAY8) {
|
|
break;
|
|
}
|
|
}
|
|
if (src == dst) {
|
|
deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i],
|
|
width, height);
|
|
} else {
|
|
deinterlace_bottom_field(dst->data[i],dst->linesize[i],
|
|
src->data[i], src->linesize[i],
|
|
width, height);
|
|
}
|
|
}
|
|
emms_c();
|
|
return 0;
|
|
}
|