mirror of
https://github.com/FFmpeg/FFmpeg.git
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1043 lines
30 KiB
C
1043 lines
30 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 Libav.
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*
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* Libav 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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* Libav 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 Libav; 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 "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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#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_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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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[AV_PIX_FMT_NB] = {
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/* YUV formats */
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[AV_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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[AV_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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[AV_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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[AV_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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[AV_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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[AV_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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[AV_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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[AV_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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[AV_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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[AV_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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[AV_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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[AV_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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[AV_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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[AV_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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[AV_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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[AV_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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[AV_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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[AV_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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[AV_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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[AV_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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[AV_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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[AV_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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[AV_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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[AV_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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[AV_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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[AV_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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[AV_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,
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},
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[AV_PIX_FMT_RGB555LE] = {
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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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[AV_PIX_FMT_RGB444BE] = {
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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 = 4,
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},
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[AV_PIX_FMT_RGB444LE] = {
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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 = 4,
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},
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/* gray / mono formats */
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[AV_PIX_FMT_GRAY16BE] = {
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.nb_channels = 1,
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.color_type = FF_COLOR_GRAY,
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.pixel_type = FF_PIXEL_PLANAR,
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.depth = 16,
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},
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[AV_PIX_FMT_GRAY16LE] = {
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.nb_channels = 1,
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.color_type = FF_COLOR_GRAY,
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.pixel_type = FF_PIXEL_PLANAR,
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.depth = 16,
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},
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[AV_PIX_FMT_GRAY8] = {
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.nb_channels = 1,
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.color_type = FF_COLOR_GRAY,
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.pixel_type = FF_PIXEL_PLANAR,
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.depth = 8,
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},
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[AV_PIX_FMT_MONOWHITE] = {
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.nb_channels = 1,
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.color_type = FF_COLOR_GRAY,
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.pixel_type = FF_PIXEL_PLANAR,
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.depth = 1,
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},
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[AV_PIX_FMT_MONOBLACK] = {
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.nb_channels = 1,
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.color_type = FF_COLOR_GRAY,
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.pixel_type = FF_PIXEL_PLANAR,
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.depth = 1,
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},
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/* paletted formats */
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[AV_PIX_FMT_PAL8] = {
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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_PALETTE,
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.depth = 8,
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},
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[AV_PIX_FMT_UYYVYY411] = {
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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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[AV_PIX_FMT_ABGR] = {
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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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[AV_PIX_FMT_BGR565BE] = {
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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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[AV_PIX_FMT_BGR565LE] = {
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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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[AV_PIX_FMT_BGR555BE] = {
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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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[AV_PIX_FMT_BGR555LE] = {
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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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[AV_PIX_FMT_BGR444BE] = {
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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 = 4,
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},
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[AV_PIX_FMT_BGR444LE] = {
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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 = 4,
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},
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[AV_PIX_FMT_RGB8] = {
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.nb_channels = 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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[AV_PIX_FMT_RGB4] = {
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.nb_channels = 1,
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.color_type = FF_COLOR_RGB,
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.pixel_type = FF_PIXEL_PACKED,
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.depth = 4,
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},
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[AV_PIX_FMT_RGB4_BYTE] = {
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.nb_channels = 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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[AV_PIX_FMT_BGR8] = {
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.nb_channels = 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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[AV_PIX_FMT_BGR4] = {
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.nb_channels = 1,
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.color_type = FF_COLOR_RGB,
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.pixel_type = FF_PIXEL_PACKED,
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.depth = 4,
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},
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[AV_PIX_FMT_BGR4_BYTE] = {
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.nb_channels = 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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[AV_PIX_FMT_NV12] = {
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.nb_channels = 2,
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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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[AV_PIX_FMT_NV21] = {
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.nb_channels = 2,
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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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[AV_PIX_FMT_BGRA] = {
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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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[AV_PIX_FMT_RGBA] = {
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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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};
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void avcodec_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift)
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{
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
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*h_shift = desc->log2_chroma_w;
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*v_shift = desc->log2_chroma_h;
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}
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int ff_is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
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{
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
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return desc->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 AVPixelFormat pix_fmt, int width, int height)
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{
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int ret;
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if ((ret = av_image_check_size(width, height, 0, NULL)) < 0)
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return ret;
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if ((ret = av_image_fill_linesizes(picture->linesize, pix_fmt, width)) < 0)
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return ret;
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return av_image_fill_pointers(picture->data, pix_fmt, height, ptr, picture->linesize);
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}
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int avpicture_layout(const AVPicture* src, enum AVPixelFormat pix_fmt, int width, int height,
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unsigned char *dest, int dest_size)
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{
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int i, j, nb_planes = 0, linesizes[4];
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
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int size = avpicture_get_size(pix_fmt, width, height);
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if (size > dest_size || size < 0)
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return AVERROR(EINVAL);
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for (i = 0; i < desc->nb_components; i++)
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nb_planes = FFMAX(desc->comp[i].plane, nb_planes);
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nb_planes++;
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av_image_fill_linesizes(linesizes, pix_fmt, width);
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for (i = 0; i < nb_planes; i++) {
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int h, shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
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const unsigned char *s = src->data[i];
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h = (height + (1 << shift) - 1) >> shift;
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for (j = 0; j < h; j++) {
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memcpy(dest, s, linesizes[i]);
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dest += linesizes[i];
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s += src->linesize[i];
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}
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}
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if (desc->flags & PIX_FMT_PAL)
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memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4);
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return size;
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}
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int avpicture_get_size(enum AVPixelFormat pix_fmt, int width, int height)
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{
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AVPicture dummy_pict;
|
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
|
|
|
|
if(av_image_check_size(width, height, 0, NULL))
|
|
return -1;
|
|
if (desc->flags & PIX_FMT_PSEUDOPAL)
|
|
// do not include palette for these pseudo-paletted formats
|
|
return width * height;
|
|
return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
|
|
}
|
|
|
|
int avcodec_get_pix_fmt_loss(enum AVPixelFormat dst_pix_fmt, enum AVPixelFormat src_pix_fmt,
|
|
int has_alpha)
|
|
{
|
|
const PixFmtInfo *pf, *ps;
|
|
const AVPixFmtDescriptor *src_desc = av_pix_fmt_desc_get(src_pix_fmt);
|
|
const AVPixFmtDescriptor *dst_desc = av_pix_fmt_desc_get(dst_pix_fmt);
|
|
int loss;
|
|
|
|
ps = &pix_fmt_info[src_pix_fmt];
|
|
|
|
/* compute loss */
|
|
loss = 0;
|
|
pf = &pix_fmt_info[dst_pix_fmt];
|
|
if (pf->depth < ps->depth ||
|
|
((dst_pix_fmt == AV_PIX_FMT_RGB555BE || dst_pix_fmt == AV_PIX_FMT_RGB555LE ||
|
|
dst_pix_fmt == AV_PIX_FMT_BGR555BE || dst_pix_fmt == AV_PIX_FMT_BGR555LE) &&
|
|
(src_pix_fmt == AV_PIX_FMT_RGB565BE || src_pix_fmt == AV_PIX_FMT_RGB565LE ||
|
|
src_pix_fmt == AV_PIX_FMT_BGR565BE || src_pix_fmt == AV_PIX_FMT_BGR565LE)))
|
|
loss |= FF_LOSS_DEPTH;
|
|
if (dst_desc->log2_chroma_w > src_desc->log2_chroma_w ||
|
|
dst_desc->log2_chroma_h > src_desc->log2_chroma_h)
|
|
loss |= FF_LOSS_RESOLUTION;
|
|
switch(pf->color_type) {
|
|
case FF_COLOR_RGB:
|
|
if (ps->color_type != FF_COLOR_RGB &&
|
|
ps->color_type != FF_COLOR_GRAY)
|
|
loss |= FF_LOSS_COLORSPACE;
|
|
break;
|
|
case FF_COLOR_GRAY:
|
|
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 (!pf->is_alpha && (ps->is_alpha && has_alpha))
|
|
loss |= FF_LOSS_ALPHA;
|
|
if (pf->pixel_type == FF_PIXEL_PALETTE &&
|
|
(ps->pixel_type != FF_PIXEL_PALETTE && ps->color_type != FF_COLOR_GRAY))
|
|
loss |= FF_LOSS_COLORQUANT;
|
|
return loss;
|
|
}
|
|
|
|
static int avg_bits_per_pixel(enum AVPixelFormat pix_fmt)
|
|
{
|
|
int bits;
|
|
const PixFmtInfo *pf;
|
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
|
|
|
|
pf = &pix_fmt_info[pix_fmt];
|
|
switch(pf->pixel_type) {
|
|
case FF_PIXEL_PACKED:
|
|
switch(pix_fmt) {
|
|
case AV_PIX_FMT_YUYV422:
|
|
case AV_PIX_FMT_UYVY422:
|
|
case AV_PIX_FMT_RGB565BE:
|
|
case AV_PIX_FMT_RGB565LE:
|
|
case AV_PIX_FMT_RGB555BE:
|
|
case AV_PIX_FMT_RGB555LE:
|
|
case AV_PIX_FMT_RGB444BE:
|
|
case AV_PIX_FMT_RGB444LE:
|
|
case AV_PIX_FMT_BGR565BE:
|
|
case AV_PIX_FMT_BGR565LE:
|
|
case AV_PIX_FMT_BGR555BE:
|
|
case AV_PIX_FMT_BGR555LE:
|
|
case AV_PIX_FMT_BGR444BE:
|
|
case AV_PIX_FMT_BGR444LE:
|
|
bits = 16;
|
|
break;
|
|
case AV_PIX_FMT_UYYVYY411:
|
|
bits = 12;
|
|
break;
|
|
default:
|
|
bits = pf->depth * pf->nb_channels;
|
|
break;
|
|
}
|
|
break;
|
|
case FF_PIXEL_PLANAR:
|
|
if (desc->log2_chroma_w == 0 && desc->log2_chroma_h == 0) {
|
|
bits = pf->depth * pf->nb_channels;
|
|
} else {
|
|
bits = pf->depth + ((2 * pf->depth) >>
|
|
(desc->log2_chroma_w + desc->log2_chroma_h));
|
|
}
|
|
break;
|
|
case FF_PIXEL_PALETTE:
|
|
bits = 8;
|
|
break;
|
|
default:
|
|
bits = -1;
|
|
break;
|
|
}
|
|
return bits;
|
|
}
|
|
|
|
static enum AVPixelFormat avcodec_find_best_pix_fmt1(enum AVPixelFormat *pix_fmt_list,
|
|
enum AVPixelFormat src_pix_fmt,
|
|
int has_alpha,
|
|
int loss_mask)
|
|
{
|
|
int dist, i, loss, min_dist;
|
|
enum AVPixelFormat dst_pix_fmt;
|
|
|
|
/* find exact color match with smallest size */
|
|
dst_pix_fmt = AV_PIX_FMT_NONE;
|
|
min_dist = 0x7fffffff;
|
|
i = 0;
|
|
while (pix_fmt_list[i] != AV_PIX_FMT_NONE) {
|
|
enum AVPixelFormat pix_fmt = pix_fmt_list[i];
|
|
|
|
if (i > AV_PIX_FMT_NB) {
|
|
av_log(NULL, AV_LOG_ERROR, "Pixel format list longer than expected, "
|
|
"it is either not properly terminated or contains duplicates\n");
|
|
return AV_PIX_FMT_NONE;
|
|
}
|
|
|
|
loss = avcodec_get_pix_fmt_loss(pix_fmt, src_pix_fmt, has_alpha) & loss_mask;
|
|
if (loss == 0) {
|
|
dist = avg_bits_per_pixel(pix_fmt);
|
|
if (dist < min_dist) {
|
|
min_dist = dist;
|
|
dst_pix_fmt = pix_fmt;
|
|
}
|
|
}
|
|
i++;
|
|
}
|
|
return dst_pix_fmt;
|
|
}
|
|
|
|
#if FF_API_FIND_BEST_PIX_FMT
|
|
enum AVPixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum AVPixelFormat src_pix_fmt,
|
|
int has_alpha, int *loss_ptr)
|
|
{
|
|
enum AVPixelFormat list[64];
|
|
int i, j = 0;
|
|
|
|
// test only the first 64 pixel formats to avoid undefined behaviour
|
|
for (i = 0; i < 64; i++) {
|
|
if (pix_fmt_mask & (1ULL << i))
|
|
list[j++] = i;
|
|
}
|
|
list[j] = AV_PIX_FMT_NONE;
|
|
|
|
return avcodec_find_best_pix_fmt2(list, src_pix_fmt, has_alpha, loss_ptr);
|
|
}
|
|
#endif /* FF_API_FIND_BEST_PIX_FMT */
|
|
|
|
enum AVPixelFormat avcodec_find_best_pix_fmt2(enum AVPixelFormat *pix_fmt_list,
|
|
enum AVPixelFormat src_pix_fmt,
|
|
int has_alpha, int *loss_ptr)
|
|
{
|
|
enum AVPixelFormat dst_pix_fmt;
|
|
int loss_mask, i;
|
|
static const int loss_mask_order[] = {
|
|
~0, /* no loss first */
|
|
~FF_LOSS_ALPHA,
|
|
~FF_LOSS_RESOLUTION,
|
|
~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
|
|
~FF_LOSS_COLORQUANT,
|
|
~FF_LOSS_DEPTH,
|
|
0,
|
|
};
|
|
|
|
/* try with successive loss */
|
|
i = 0;
|
|
for(;;) {
|
|
loss_mask = loss_mask_order[i++];
|
|
dst_pix_fmt = avcodec_find_best_pix_fmt1(pix_fmt_list, src_pix_fmt,
|
|
has_alpha, loss_mask);
|
|
if (dst_pix_fmt >= 0)
|
|
goto found;
|
|
if (loss_mask == 0)
|
|
break;
|
|
}
|
|
return AV_PIX_FMT_NONE;
|
|
found:
|
|
if (loss_ptr)
|
|
*loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
|
|
return dst_pix_fmt;
|
|
}
|
|
|
|
void av_picture_copy(AVPicture *dst, const AVPicture *src,
|
|
enum AVPixelFormat pix_fmt, int width, int height)
|
|
{
|
|
av_image_copy(dst->data, dst->linesize, 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 AVPixelFormat 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(const PixFmtInfo *ps)
|
|
{
|
|
return (ps->color_type == FF_COLOR_YUV ||
|
|
ps->color_type == FF_COLOR_YUV_JPEG) &&
|
|
ps->pixel_type == FF_PIXEL_PLANAR;
|
|
}
|
|
|
|
int av_picture_crop(AVPicture *dst, const AVPicture *src,
|
|
enum AVPixelFormat pix_fmt, int top_band, int left_band)
|
|
{
|
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
|
|
int y_shift;
|
|
int x_shift;
|
|
|
|
if (pix_fmt < 0 || pix_fmt >= AV_PIX_FMT_NB || !is_yuv_planar(&pix_fmt_info[pix_fmt]))
|
|
return -1;
|
|
|
|
y_shift = desc->log2_chroma_h;
|
|
x_shift = desc->log2_chroma_w;
|
|
|
|
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);
|
|
|
|
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 AVPixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright,
|
|
int *color)
|
|
{
|
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
|
|
uint8_t *optr;
|
|
int y_shift;
|
|
int x_shift;
|
|
int yheight;
|
|
int i, y;
|
|
|
|
if (pix_fmt < 0 || pix_fmt >= AV_PIX_FMT_NB ||
|
|
!is_yuv_planar(&pix_fmt_info[pix_fmt])) return -1;
|
|
|
|
for (i = 0; i < 3; i++) {
|
|
x_shift = i ? desc->log2_chroma_w : 0;
|
|
y_shift = i ? desc->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 AVPixelFormat pix_fmt, int width, int height)
|
|
{
|
|
int i;
|
|
|
|
if (pix_fmt != AV_PIX_FMT_YUV420P &&
|
|
pix_fmt != AV_PIX_FMT_YUVJ420P &&
|
|
pix_fmt != AV_PIX_FMT_YUV422P &&
|
|
pix_fmt != AV_PIX_FMT_YUVJ422P &&
|
|
pix_fmt != AV_PIX_FMT_YUV444P &&
|
|
pix_fmt != AV_PIX_FMT_YUV411P &&
|
|
pix_fmt != AV_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 AV_PIX_FMT_YUVJ420P:
|
|
case AV_PIX_FMT_YUV420P:
|
|
width >>= 1;
|
|
height >>= 1;
|
|
break;
|
|
case AV_PIX_FMT_YUV422P:
|
|
case AV_PIX_FMT_YUVJ422P:
|
|
width >>= 1;
|
|
break;
|
|
case AV_PIX_FMT_YUV411P:
|
|
width >>= 2;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (pix_fmt == AV_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;
|
|
}
|