ffmpeg / libavcodec / imgconvert.c @ a80f74c5
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/*
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* Misc image conversion routines
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* Copyright (c) 2001, 2002, 2003 Fabrice Bellard
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* misc image conversion routines
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*/
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/* TODO:
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* - write 'ffimg' program to test all the image related stuff
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* - move all api to slice based system
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* - integrate deinterlacing, postprocessing and scaling in the conversion process
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*/
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#include "avcodec.h" |
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#include "dsputil.h" |
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#include "internal.h" |
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#include "imgconvert.h" |
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#include "libavutil/colorspace.h" |
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#include "libavutil/pixdesc.h" |
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#include "libavutil/imgutils.h" |
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#if HAVE_MMX && HAVE_YASM
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#include "x86/dsputil_mmx.h" |
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#endif
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#define xglue(x, y) x ## y |
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#define glue(x, y) xglue(x, y)
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#define FF_COLOR_RGB 0 /**< RGB color space */ |
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#define FF_COLOR_GRAY 1 /**< gray color space */ |
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#define FF_COLOR_YUV 2 /**< YUV color space. 16 <= Y <= 235, 16 <= U, V <= 240 */ |
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#define FF_COLOR_YUV_JPEG 3 /**< YUV color space. 0 <= Y <= 255, 0 <= U, V <= 255 */ |
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#define FF_PIXEL_PLANAR 0 /**< each channel has one component in AVPicture */ |
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#define FF_PIXEL_PACKED 1 /**< only one components containing all the channels */ |
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#define FF_PIXEL_PALETTE 2 /**< one components containing indexes for a palette */ |
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#if HAVE_MMX && HAVE_YASM
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#define deinterlace_line_inplace ff_deinterlace_line_inplace_mmx
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#define deinterlace_line ff_deinterlace_line_mmx
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#else
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#define deinterlace_line_inplace deinterlace_line_inplace_c
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#define deinterlace_line deinterlace_line_c
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#endif
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typedef struct PixFmtInfo { |
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uint8_t nb_channels; /**< number of channels (including alpha) */
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uint8_t color_type; /**< color type (see FF_COLOR_xxx constants) */
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uint8_t pixel_type; /**< pixel storage type (see FF_PIXEL_xxx constants) */
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uint8_t is_alpha : 1; /**< true if alpha can be specified */ |
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uint8_t depth; /**< bit depth of the color components */
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} PixFmtInfo; |
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/* this table gives more information about formats */
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static const PixFmtInfo pix_fmt_info[PIX_FMT_NB] = { |
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/* YUV formats */
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[PIX_FMT_YUV420P] = {
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.nb_channels = 3,
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.color_type = FF_COLOR_YUV, |
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.pixel_type = FF_PIXEL_PLANAR, |
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.depth = 8,
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}, |
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[PIX_FMT_YUV422P] = {
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.nb_channels = 3,
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.color_type = FF_COLOR_YUV, |
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.pixel_type = FF_PIXEL_PLANAR, |
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.depth = 8,
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}, |
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[PIX_FMT_YUV444P] = {
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.nb_channels = 3,
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.color_type = FF_COLOR_YUV, |
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.pixel_type = FF_PIXEL_PLANAR, |
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.depth = 8,
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}, |
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[PIX_FMT_YUYV422] = {
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.nb_channels = 1,
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.color_type = FF_COLOR_YUV, |
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.pixel_type = FF_PIXEL_PACKED, |
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.depth = 8,
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}, |
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[PIX_FMT_UYVY422] = {
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.nb_channels = 1,
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.color_type = FF_COLOR_YUV, |
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.pixel_type = FF_PIXEL_PACKED, |
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.depth = 8,
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}, |
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[PIX_FMT_YUV410P] = {
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.nb_channels = 3,
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.color_type = FF_COLOR_YUV, |
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.pixel_type = FF_PIXEL_PLANAR, |
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.depth = 8,
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}, |
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[PIX_FMT_YUV411P] = {
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.nb_channels = 3,
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.color_type = FF_COLOR_YUV, |
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.pixel_type = FF_PIXEL_PLANAR, |
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.depth = 8,
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}, |
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[PIX_FMT_YUV440P] = {
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.nb_channels = 3,
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.color_type = FF_COLOR_YUV, |
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.pixel_type = FF_PIXEL_PLANAR, |
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.depth = 8,
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}, |
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[PIX_FMT_YUV420P16LE] = {
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.nb_channels = 3,
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.color_type = FF_COLOR_YUV, |
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.pixel_type = FF_PIXEL_PLANAR, |
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.depth = 16,
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}, |
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[PIX_FMT_YUV422P16LE] = {
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.nb_channels = 3,
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.color_type = FF_COLOR_YUV, |
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.pixel_type = FF_PIXEL_PLANAR, |
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.depth = 16,
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}, |
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[PIX_FMT_YUV444P16LE] = {
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.nb_channels = 3,
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.color_type = FF_COLOR_YUV, |
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.pixel_type = FF_PIXEL_PLANAR, |
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.depth = 16,
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}, |
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[PIX_FMT_YUV420P16BE] = {
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.nb_channels = 3,
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.color_type = FF_COLOR_YUV, |
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.pixel_type = FF_PIXEL_PLANAR, |
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.depth = 16,
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}, |
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[PIX_FMT_YUV422P16BE] = {
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.nb_channels = 3,
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.color_type = FF_COLOR_YUV, |
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.pixel_type = FF_PIXEL_PLANAR, |
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.depth = 16,
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}, |
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[PIX_FMT_YUV444P16BE] = {
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.nb_channels = 3,
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.color_type = FF_COLOR_YUV, |
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.pixel_type = FF_PIXEL_PLANAR, |
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.depth = 16,
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}, |
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/* YUV formats with alpha plane */
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[PIX_FMT_YUVA420P] = {
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.nb_channels = 4,
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.color_type = FF_COLOR_YUV, |
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.pixel_type = FF_PIXEL_PLANAR, |
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.depth = 8,
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}, |
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/* JPEG YUV */
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[PIX_FMT_YUVJ420P] = {
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.nb_channels = 3,
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.color_type = FF_COLOR_YUV_JPEG, |
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.pixel_type = FF_PIXEL_PLANAR, |
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.depth = 8,
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}, |
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[PIX_FMT_YUVJ422P] = {
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.nb_channels = 3,
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.color_type = FF_COLOR_YUV_JPEG, |
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.pixel_type = FF_PIXEL_PLANAR, |
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.depth = 8,
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}, |
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[PIX_FMT_YUVJ444P] = {
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.nb_channels = 3,
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.color_type = FF_COLOR_YUV_JPEG, |
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.pixel_type = FF_PIXEL_PLANAR, |
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.depth = 8,
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}, |
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[PIX_FMT_YUVJ440P] = {
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.nb_channels = 3,
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.color_type = FF_COLOR_YUV_JPEG, |
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.pixel_type = FF_PIXEL_PLANAR, |
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.depth = 8,
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}, |
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/* RGB formats */
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[PIX_FMT_RGB24] = {
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.nb_channels = 3,
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.color_type = FF_COLOR_RGB, |
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.pixel_type = FF_PIXEL_PACKED, |
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.depth = 8,
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}, |
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[PIX_FMT_BGR24] = {
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.nb_channels = 3,
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.color_type = FF_COLOR_RGB, |
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.pixel_type = FF_PIXEL_PACKED, |
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.depth = 8,
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}, |
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[PIX_FMT_ARGB] = {
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.nb_channels = 4, .is_alpha = 1, |
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.color_type = FF_COLOR_RGB, |
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.pixel_type = FF_PIXEL_PACKED, |
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.depth = 8,
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}, |
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[PIX_FMT_RGB48BE] = {
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.nb_channels = 3,
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.color_type = FF_COLOR_RGB, |
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.pixel_type = FF_PIXEL_PACKED, |
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.depth = 16,
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}, |
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[PIX_FMT_RGB48LE] = {
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.nb_channels = 3,
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.color_type = FF_COLOR_RGB, |
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.pixel_type = FF_PIXEL_PACKED, |
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.depth = 16,
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}, |
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[PIX_FMT_RGB565BE] = {
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.nb_channels = 3,
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.color_type = FF_COLOR_RGB, |
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.pixel_type = FF_PIXEL_PACKED, |
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.depth = 5,
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}, |
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[PIX_FMT_RGB565LE] = {
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.nb_channels = 3,
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.color_type = FF_COLOR_RGB, |
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.pixel_type = FF_PIXEL_PACKED, |
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.depth = 5,
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}, |
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[PIX_FMT_RGB555BE] = {
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.nb_channels = 3,
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.color_type = FF_COLOR_RGB, |
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.pixel_type = FF_PIXEL_PACKED, |
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.depth = 5,
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}, |
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[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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[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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[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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[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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[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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[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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[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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[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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[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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[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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[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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[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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[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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[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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[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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[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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[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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[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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[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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[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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[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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[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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[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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[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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[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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[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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[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 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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const char *avcodec_get_pix_fmt_name(enum PixelFormat pix_fmt) |
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{
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if ((unsigned)pix_fmt >= PIX_FMT_NB) |
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return NULL; |
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else
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return av_pix_fmt_descriptors[pix_fmt].name;
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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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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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|
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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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int i, j, nb_planes = 0, linesizes[4]; |
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const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
|
| 452 |
int size = avpicture_get_size(pix_fmt, width, height);
|
| 453 |
|
| 454 |
if (size > dest_size || size < 0) |
| 455 |
return AVERROR(EINVAL);
|
| 456 |
|
| 457 |
for (i = 0; i < desc->nb_components; i++) |
| 458 |
nb_planes = FFMAX(desc->comp[i].plane, nb_planes); |
| 459 |
nb_planes++; |
| 460 |
|
| 461 |
av_image_fill_linesizes(linesizes, pix_fmt, width); |
| 462 |
for (i = 0; i < nb_planes; i++) { |
| 463 |
int h, shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0; |
| 464 |
const unsigned char *s = src->data[i]; |
| 465 |
h = (height + (1 << shift) - 1) >> shift; |
| 466 |
|
| 467 |
for (j = 0; j < h; j++) { |
| 468 |
memcpy(dest, s, linesizes[i]); |
| 469 |
dest += linesizes[i]; |
| 470 |
s += src->linesize[i]; |
| 471 |
} |
| 472 |
} |
| 473 |
|
| 474 |
if (desc->flags & PIX_FMT_PAL)
|
| 475 |
memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4); |
| 476 |
|
| 477 |
return size;
|
| 478 |
} |
| 479 |
|
| 480 |
int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height) |
| 481 |
{
|
| 482 |
AVPicture dummy_pict; |
| 483 |
if(av_image_check_size(width, height, 0, NULL)) |
| 484 |
return -1; |
| 485 |
switch (pix_fmt) {
|
| 486 |
case PIX_FMT_RGB8:
|
| 487 |
case PIX_FMT_BGR8:
|
| 488 |
case PIX_FMT_RGB4_BYTE:
|
| 489 |
case PIX_FMT_BGR4_BYTE:
|
| 490 |
case PIX_FMT_GRAY8:
|
| 491 |
// do not include palette for these pseudo-paletted formats
|
| 492 |
return width * height;
|
| 493 |
} |
| 494 |
return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height); |
| 495 |
} |
| 496 |
|
| 497 |
int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt, |
| 498 |
int has_alpha)
|
| 499 |
{
|
| 500 |
const PixFmtInfo *pf, *ps;
|
| 501 |
const AVPixFmtDescriptor *src_desc = &av_pix_fmt_descriptors[src_pix_fmt];
|
| 502 |
const AVPixFmtDescriptor *dst_desc = &av_pix_fmt_descriptors[dst_pix_fmt];
|
| 503 |
int loss;
|
| 504 |
|
| 505 |
ps = &pix_fmt_info[src_pix_fmt]; |
| 506 |
|
| 507 |
/* compute loss */
|
| 508 |
loss = 0;
|
| 509 |
pf = &pix_fmt_info[dst_pix_fmt]; |
| 510 |
if (pf->depth < ps->depth ||
|
| 511 |
((dst_pix_fmt == PIX_FMT_RGB555BE || dst_pix_fmt == PIX_FMT_RGB555LE || |
| 512 |
dst_pix_fmt == PIX_FMT_BGR555BE || dst_pix_fmt == PIX_FMT_BGR555LE) && |
| 513 |
(src_pix_fmt == PIX_FMT_RGB565BE || src_pix_fmt == PIX_FMT_RGB565LE || |
| 514 |
src_pix_fmt == PIX_FMT_BGR565BE || src_pix_fmt == PIX_FMT_BGR565LE))) |
| 515 |
loss |= FF_LOSS_DEPTH; |
| 516 |
if (dst_desc->log2_chroma_w > src_desc->log2_chroma_w ||
|
| 517 |
dst_desc->log2_chroma_h > src_desc->log2_chroma_h) |
| 518 |
loss |= FF_LOSS_RESOLUTION; |
| 519 |
switch(pf->color_type) {
|
| 520 |
case FF_COLOR_RGB:
|
| 521 |
if (ps->color_type != FF_COLOR_RGB &&
|
| 522 |
ps->color_type != FF_COLOR_GRAY) |
| 523 |
loss |= FF_LOSS_COLORSPACE; |
| 524 |
break;
|
| 525 |
case FF_COLOR_GRAY:
|
| 526 |
if (ps->color_type != FF_COLOR_GRAY)
|
| 527 |
loss |= FF_LOSS_COLORSPACE; |
| 528 |
break;
|
| 529 |
case FF_COLOR_YUV:
|
| 530 |
if (ps->color_type != FF_COLOR_YUV)
|
| 531 |
loss |= FF_LOSS_COLORSPACE; |
| 532 |
break;
|
| 533 |
case FF_COLOR_YUV_JPEG:
|
| 534 |
if (ps->color_type != FF_COLOR_YUV_JPEG &&
|
| 535 |
ps->color_type != FF_COLOR_YUV && |
| 536 |
ps->color_type != FF_COLOR_GRAY) |
| 537 |
loss |= FF_LOSS_COLORSPACE; |
| 538 |
break;
|
| 539 |
default:
|
| 540 |
/* fail safe test */
|
| 541 |
if (ps->color_type != pf->color_type)
|
| 542 |
loss |= FF_LOSS_COLORSPACE; |
| 543 |
break;
|
| 544 |
} |
| 545 |
if (pf->color_type == FF_COLOR_GRAY &&
|
| 546 |
ps->color_type != FF_COLOR_GRAY) |
| 547 |
loss |= FF_LOSS_CHROMA; |
| 548 |
if (!pf->is_alpha && (ps->is_alpha && has_alpha))
|
| 549 |
loss |= FF_LOSS_ALPHA; |
| 550 |
if (pf->pixel_type == FF_PIXEL_PALETTE &&
|
| 551 |
(ps->pixel_type != FF_PIXEL_PALETTE && ps->color_type != FF_COLOR_GRAY)) |
| 552 |
loss |= FF_LOSS_COLORQUANT; |
| 553 |
return loss;
|
| 554 |
} |
| 555 |
|
| 556 |
static int avg_bits_per_pixel(enum PixelFormat pix_fmt) |
| 557 |
{
|
| 558 |
int bits;
|
| 559 |
const PixFmtInfo *pf;
|
| 560 |
const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
|
| 561 |
|
| 562 |
pf = &pix_fmt_info[pix_fmt]; |
| 563 |
switch(pf->pixel_type) {
|
| 564 |
case FF_PIXEL_PACKED:
|
| 565 |
switch(pix_fmt) {
|
| 566 |
case PIX_FMT_YUYV422:
|
| 567 |
case PIX_FMT_UYVY422:
|
| 568 |
case PIX_FMT_RGB565BE:
|
| 569 |
case PIX_FMT_RGB565LE:
|
| 570 |
case PIX_FMT_RGB555BE:
|
| 571 |
case PIX_FMT_RGB555LE:
|
| 572 |
case PIX_FMT_RGB444BE:
|
| 573 |
case PIX_FMT_RGB444LE:
|
| 574 |
case PIX_FMT_BGR565BE:
|
| 575 |
case PIX_FMT_BGR565LE:
|
| 576 |
case PIX_FMT_BGR555BE:
|
| 577 |
case PIX_FMT_BGR555LE:
|
| 578 |
case PIX_FMT_BGR444BE:
|
| 579 |
case PIX_FMT_BGR444LE:
|
| 580 |
bits = 16;
|
| 581 |
break;
|
| 582 |
case PIX_FMT_UYYVYY411:
|
| 583 |
bits = 12;
|
| 584 |
break;
|
| 585 |
default:
|
| 586 |
bits = pf->depth * pf->nb_channels; |
| 587 |
break;
|
| 588 |
} |
| 589 |
break;
|
| 590 |
case FF_PIXEL_PLANAR:
|
| 591 |
if (desc->log2_chroma_w == 0 && desc->log2_chroma_h == 0) { |
| 592 |
bits = pf->depth * pf->nb_channels; |
| 593 |
} else {
|
| 594 |
bits = pf->depth + ((2 * pf->depth) >>
|
| 595 |
(desc->log2_chroma_w + desc->log2_chroma_h)); |
| 596 |
} |
| 597 |
break;
|
| 598 |
case FF_PIXEL_PALETTE:
|
| 599 |
bits = 8;
|
| 600 |
break;
|
| 601 |
default:
|
| 602 |
bits = -1;
|
| 603 |
break;
|
| 604 |
} |
| 605 |
return bits;
|
| 606 |
} |
| 607 |
|
| 608 |
static enum PixelFormat avcodec_find_best_pix_fmt1(int64_t pix_fmt_mask, |
| 609 |
enum PixelFormat src_pix_fmt,
|
| 610 |
int has_alpha,
|
| 611 |
int loss_mask)
|
| 612 |
{
|
| 613 |
int dist, i, loss, min_dist;
|
| 614 |
enum PixelFormat dst_pix_fmt;
|
| 615 |
|
| 616 |
/* find exact color match with smallest size */
|
| 617 |
dst_pix_fmt = PIX_FMT_NONE; |
| 618 |
min_dist = 0x7fffffff;
|
| 619 |
for(i = 0;i < PIX_FMT_NB; i++) { |
| 620 |
if (pix_fmt_mask & (1ULL << i)) { |
| 621 |
loss = avcodec_get_pix_fmt_loss(i, src_pix_fmt, has_alpha) & loss_mask; |
| 622 |
if (loss == 0) { |
| 623 |
dist = avg_bits_per_pixel(i); |
| 624 |
if (dist < min_dist) {
|
| 625 |
min_dist = dist; |
| 626 |
dst_pix_fmt = i; |
| 627 |
} |
| 628 |
} |
| 629 |
} |
| 630 |
} |
| 631 |
return dst_pix_fmt;
|
| 632 |
} |
| 633 |
|
| 634 |
enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt, |
| 635 |
int has_alpha, int *loss_ptr) |
| 636 |
{
|
| 637 |
enum PixelFormat dst_pix_fmt;
|
| 638 |
int loss_mask, i;
|
| 639 |
static const int loss_mask_order[] = { |
| 640 |
~0, /* no loss first */ |
| 641 |
~FF_LOSS_ALPHA, |
| 642 |
~FF_LOSS_RESOLUTION, |
| 643 |
~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION), |
| 644 |
~FF_LOSS_COLORQUANT, |
| 645 |
~FF_LOSS_DEPTH, |
| 646 |
0,
|
| 647 |
}; |
| 648 |
|
| 649 |
/* try with successive loss */
|
| 650 |
i = 0;
|
| 651 |
for(;;) {
|
| 652 |
loss_mask = loss_mask_order[i++]; |
| 653 |
dst_pix_fmt = avcodec_find_best_pix_fmt1(pix_fmt_mask, src_pix_fmt, |
| 654 |
has_alpha, loss_mask); |
| 655 |
if (dst_pix_fmt >= 0) |
| 656 |
goto found;
|
| 657 |
if (loss_mask == 0) |
| 658 |
break;
|
| 659 |
} |
| 660 |
return PIX_FMT_NONE;
|
| 661 |
found:
|
| 662 |
if (loss_ptr)
|
| 663 |
*loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha); |
| 664 |
return dst_pix_fmt;
|
| 665 |
} |
| 666 |
|
| 667 |
void av_picture_copy(AVPicture *dst, const AVPicture *src, |
| 668 |
enum PixelFormat pix_fmt, int width, int height) |
| 669 |
{
|
| 670 |
av_image_copy(dst->data, dst->linesize, src->data, |
| 671 |
src->linesize, pix_fmt, width, height); |
| 672 |
} |
| 673 |
|
| 674 |
/* 2x2 -> 1x1 */
|
| 675 |
void ff_shrink22(uint8_t *dst, int dst_wrap, |
| 676 |
const uint8_t *src, int src_wrap, |
| 677 |
int width, int height) |
| 678 |
{
|
| 679 |
int w;
|
| 680 |
const uint8_t *s1, *s2;
|
| 681 |
uint8_t *d; |
| 682 |
|
| 683 |
for(;height > 0; height--) { |
| 684 |
s1 = src; |
| 685 |
s2 = s1 + src_wrap; |
| 686 |
d = dst; |
| 687 |
for(w = width;w >= 4; w-=4) { |
| 688 |
d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2; |
| 689 |
d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2; |
| 690 |
d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2; |
| 691 |
d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2; |
| 692 |
s1 += 8;
|
| 693 |
s2 += 8;
|
| 694 |
d += 4;
|
| 695 |
} |
| 696 |
for(;w > 0; w--) { |
| 697 |
d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2; |
| 698 |
s1 += 2;
|
| 699 |
s2 += 2;
|
| 700 |
d++; |
| 701 |
} |
| 702 |
src += 2 * src_wrap;
|
| 703 |
dst += dst_wrap; |
| 704 |
} |
| 705 |
} |
| 706 |
|
| 707 |
/* 4x4 -> 1x1 */
|
| 708 |
void ff_shrink44(uint8_t *dst, int dst_wrap, |
| 709 |
const uint8_t *src, int src_wrap, |
| 710 |
int width, int height) |
| 711 |
{
|
| 712 |
int w;
|
| 713 |
const uint8_t *s1, *s2, *s3, *s4;
|
| 714 |
uint8_t *d; |
| 715 |
|
| 716 |
for(;height > 0; height--) { |
| 717 |
s1 = src; |
| 718 |
s2 = s1 + src_wrap; |
| 719 |
s3 = s2 + src_wrap; |
| 720 |
s4 = s3 + src_wrap; |
| 721 |
d = dst; |
| 722 |
for(w = width;w > 0; w--) { |
| 723 |
d[0] = (s1[0] + s1[1] + s1[2] + s1[3] + |
| 724 |
s2[0] + s2[1] + s2[2] + s2[3] + |
| 725 |
s3[0] + s3[1] + s3[2] + s3[3] + |
| 726 |
s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4; |
| 727 |
s1 += 4;
|
| 728 |
s2 += 4;
|
| 729 |
s3 += 4;
|
| 730 |
s4 += 4;
|
| 731 |
d++; |
| 732 |
} |
| 733 |
src += 4 * src_wrap;
|
| 734 |
dst += dst_wrap; |
| 735 |
} |
| 736 |
} |
| 737 |
|
| 738 |
/* 8x8 -> 1x1 */
|
| 739 |
void ff_shrink88(uint8_t *dst, int dst_wrap, |
| 740 |
const uint8_t *src, int src_wrap, |
| 741 |
int width, int height) |
| 742 |
{
|
| 743 |
int w, i;
|
| 744 |
|
| 745 |
for(;height > 0; height--) { |
| 746 |
for(w = width;w > 0; w--) { |
| 747 |
int tmp=0; |
| 748 |
for(i=0; i<8; i++){ |
| 749 |
tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7]; |
| 750 |
src += src_wrap; |
| 751 |
} |
| 752 |
*(dst++) = (tmp + 32)>>6; |
| 753 |
src += 8 - 8*src_wrap; |
| 754 |
} |
| 755 |
src += 8*src_wrap - 8*width; |
| 756 |
dst += dst_wrap - width; |
| 757 |
} |
| 758 |
} |
| 759 |
|
| 760 |
|
| 761 |
int avpicture_alloc(AVPicture *picture,
|
| 762 |
enum PixelFormat pix_fmt, int width, int height) |
| 763 |
{
|
| 764 |
int ret;
|
| 765 |
|
| 766 |
if ((ret = av_image_alloc(picture->data, picture->linesize, width, height, pix_fmt, 1)) < 0) { |
| 767 |
memset(picture, 0, sizeof(AVPicture)); |
| 768 |
return ret;
|
| 769 |
} |
| 770 |
|
| 771 |
return 0; |
| 772 |
} |
| 773 |
|
| 774 |
void avpicture_free(AVPicture *picture)
|
| 775 |
{
|
| 776 |
av_free(picture->data[0]);
|
| 777 |
} |
| 778 |
|
| 779 |
/* return true if yuv planar */
|
| 780 |
static inline int is_yuv_planar(const PixFmtInfo *ps) |
| 781 |
{
|
| 782 |
return (ps->color_type == FF_COLOR_YUV ||
|
| 783 |
ps->color_type == FF_COLOR_YUV_JPEG) && |
| 784 |
ps->pixel_type == FF_PIXEL_PLANAR; |
| 785 |
} |
| 786 |
|
| 787 |
int av_picture_crop(AVPicture *dst, const AVPicture *src, |
| 788 |
enum PixelFormat pix_fmt, int top_band, int left_band) |
| 789 |
{
|
| 790 |
int y_shift;
|
| 791 |
int x_shift;
|
| 792 |
|
| 793 |
if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB) |
| 794 |
return -1; |
| 795 |
|
| 796 |
y_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_h; |
| 797 |
x_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_w; |
| 798 |
|
| 799 |
if (is_yuv_planar(&pix_fmt_info[pix_fmt])) {
|
| 800 |
dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band; |
| 801 |
dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift); |
| 802 |
dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift); |
| 803 |
} else{
|
| 804 |
if(top_band % (1<<y_shift) || left_band % (1<<x_shift)) |
| 805 |
return -1; |
| 806 |
if(left_band) //FIXME add support for this too |
| 807 |
return -1; |
| 808 |
dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band; |
| 809 |
} |
| 810 |
|
| 811 |
dst->linesize[0] = src->linesize[0]; |
| 812 |
dst->linesize[1] = src->linesize[1]; |
| 813 |
dst->linesize[2] = src->linesize[2]; |
| 814 |
return 0; |
| 815 |
} |
| 816 |
|
| 817 |
int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width, |
| 818 |
enum PixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright, |
| 819 |
int *color)
|
| 820 |
{
|
| 821 |
uint8_t *optr; |
| 822 |
int y_shift;
|
| 823 |
int x_shift;
|
| 824 |
int yheight;
|
| 825 |
int i, y;
|
| 826 |
|
| 827 |
if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB || |
| 828 |
!is_yuv_planar(&pix_fmt_info[pix_fmt])) return -1; |
| 829 |
|
| 830 |
for (i = 0; i < 3; i++) { |
| 831 |
x_shift = i ? av_pix_fmt_descriptors[pix_fmt].log2_chroma_w : 0;
|
| 832 |
y_shift = i ? av_pix_fmt_descriptors[pix_fmt].log2_chroma_h : 0;
|
| 833 |
|
| 834 |
if (padtop || padleft) {
|
| 835 |
memset(dst->data[i], color[i], |
| 836 |
dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift)); |
| 837 |
} |
| 838 |
|
| 839 |
if (padleft || padright) {
|
| 840 |
optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) + |
| 841 |
(dst->linesize[i] - (padright >> x_shift)); |
| 842 |
yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
|
| 843 |
for (y = 0; y < yheight; y++) { |
| 844 |
memset(optr, color[i], (padleft + padright) >> x_shift); |
| 845 |
optr += dst->linesize[i]; |
| 846 |
} |
| 847 |
} |
| 848 |
|
| 849 |
if (src) { /* first line */ |
| 850 |
uint8_t *iptr = src->data[i]; |
| 851 |
optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) + |
| 852 |
(padleft >> x_shift); |
| 853 |
memcpy(optr, iptr, (width - padleft - padright) >> x_shift); |
| 854 |
iptr += src->linesize[i]; |
| 855 |
optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) + |
| 856 |
(dst->linesize[i] - (padright >> x_shift)); |
| 857 |
yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
|
| 858 |
for (y = 0; y < yheight; y++) { |
| 859 |
memset(optr, color[i], (padleft + padright) >> x_shift); |
| 860 |
memcpy(optr + ((padleft + padright) >> x_shift), iptr, |
| 861 |
(width - padleft - padright) >> x_shift); |
| 862 |
iptr += src->linesize[i]; |
| 863 |
optr += dst->linesize[i]; |
| 864 |
} |
| 865 |
} |
| 866 |
|
| 867 |
if (padbottom || padright) {
|
| 868 |
optr = dst->data[i] + dst->linesize[i] * |
| 869 |
((height - padbottom) >> y_shift) - (padright >> x_shift); |
| 870 |
memset(optr, color[i],dst->linesize[i] * |
| 871 |
(padbottom >> y_shift) + (padright >> x_shift)); |
| 872 |
} |
| 873 |
} |
| 874 |
return 0; |
| 875 |
} |
| 876 |
|
| 877 |
/* NOTE: we scan all the pixels to have an exact information */
|
| 878 |
static int get_alpha_info_pal8(const AVPicture *src, int width, int height) |
| 879 |
{
|
| 880 |
const unsigned char *p; |
| 881 |
int src_wrap, ret, x, y;
|
| 882 |
unsigned int a; |
| 883 |
uint32_t *palette = (uint32_t *)src->data[1];
|
| 884 |
|
| 885 |
p = src->data[0];
|
| 886 |
src_wrap = src->linesize[0] - width;
|
| 887 |
ret = 0;
|
| 888 |
for(y=0;y<height;y++) { |
| 889 |
for(x=0;x<width;x++) { |
| 890 |
a = palette[p[0]] >> 24; |
| 891 |
if (a == 0x00) { |
| 892 |
ret |= FF_ALPHA_TRANSP; |
| 893 |
} else if (a != 0xff) { |
| 894 |
ret |= FF_ALPHA_SEMI_TRANSP; |
| 895 |
} |
| 896 |
p++; |
| 897 |
} |
| 898 |
p += src_wrap; |
| 899 |
} |
| 900 |
return ret;
|
| 901 |
} |
| 902 |
|
| 903 |
int img_get_alpha_info(const AVPicture *src, |
| 904 |
enum PixelFormat pix_fmt, int width, int height) |
| 905 |
{
|
| 906 |
const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
|
| 907 |
int ret;
|
| 908 |
|
| 909 |
/* no alpha can be represented in format */
|
| 910 |
if (!pf->is_alpha)
|
| 911 |
return 0; |
| 912 |
switch(pix_fmt) {
|
| 913 |
case PIX_FMT_PAL8:
|
| 914 |
ret = get_alpha_info_pal8(src, width, height); |
| 915 |
break;
|
| 916 |
default:
|
| 917 |
/* we do not know, so everything is indicated */
|
| 918 |
ret = FF_ALPHA_TRANSP | FF_ALPHA_SEMI_TRANSP; |
| 919 |
break;
|
| 920 |
} |
| 921 |
return ret;
|
| 922 |
} |
| 923 |
|
| 924 |
#if !(HAVE_MMX && HAVE_YASM)
|
| 925 |
/* filter parameters: [-1 4 2 4 -1] // 8 */
|
| 926 |
static void deinterlace_line_c(uint8_t *dst, |
| 927 |
const uint8_t *lum_m4, const uint8_t *lum_m3, |
| 928 |
const uint8_t *lum_m2, const uint8_t *lum_m1, |
| 929 |
const uint8_t *lum,
|
| 930 |
int size)
|
| 931 |
{
|
| 932 |
uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; |
| 933 |
int sum;
|
| 934 |
|
| 935 |
for(;size > 0;size--) { |
| 936 |
sum = -lum_m4[0];
|
| 937 |
sum += lum_m3[0] << 2; |
| 938 |
sum += lum_m2[0] << 1; |
| 939 |
sum += lum_m1[0] << 2; |
| 940 |
sum += -lum[0];
|
| 941 |
dst[0] = cm[(sum + 4) >> 3]; |
| 942 |
lum_m4++; |
| 943 |
lum_m3++; |
| 944 |
lum_m2++; |
| 945 |
lum_m1++; |
| 946 |
lum++; |
| 947 |
dst++; |
| 948 |
} |
| 949 |
} |
| 950 |
|
| 951 |
static void deinterlace_line_inplace_c(uint8_t *lum_m4, uint8_t *lum_m3, |
| 952 |
uint8_t *lum_m2, uint8_t *lum_m1, |
| 953 |
uint8_t *lum, int size)
|
| 954 |
{
|
| 955 |
uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; |
| 956 |
int sum;
|
| 957 |
|
| 958 |
for(;size > 0;size--) { |
| 959 |
sum = -lum_m4[0];
|
| 960 |
sum += lum_m3[0] << 2; |
| 961 |
sum += lum_m2[0] << 1; |
| 962 |
lum_m4[0]=lum_m2[0]; |
| 963 |
sum += lum_m1[0] << 2; |
| 964 |
sum += -lum[0];
|
| 965 |
lum_m2[0] = cm[(sum + 4) >> 3]; |
| 966 |
lum_m4++; |
| 967 |
lum_m3++; |
| 968 |
lum_m2++; |
| 969 |
lum_m1++; |
| 970 |
lum++; |
| 971 |
} |
| 972 |
} |
| 973 |
#endif
|
| 974 |
|
| 975 |
/* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
|
| 976 |
top field is copied as is, but the bottom field is deinterlaced
|
| 977 |
against the top field. */
|
| 978 |
static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap, |
| 979 |
const uint8_t *src1, int src_wrap, |
| 980 |
int width, int height) |
| 981 |
{
|
| 982 |
const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
|
| 983 |
int y;
|
| 984 |
|
| 985 |
src_m2 = src1; |
| 986 |
src_m1 = src1; |
| 987 |
src_0=&src_m1[src_wrap]; |
| 988 |
src_p1=&src_0[src_wrap]; |
| 989 |
src_p2=&src_p1[src_wrap]; |
| 990 |
for(y=0;y<(height-2);y+=2) { |
| 991 |
memcpy(dst,src_m1,width); |
| 992 |
dst += dst_wrap; |
| 993 |
deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width); |
| 994 |
src_m2 = src_0; |
| 995 |
src_m1 = src_p1; |
| 996 |
src_0 = src_p2; |
| 997 |
src_p1 += 2*src_wrap;
|
| 998 |
src_p2 += 2*src_wrap;
|
| 999 |
dst += dst_wrap; |
| 1000 |
} |
| 1001 |
memcpy(dst,src_m1,width); |
| 1002 |
dst += dst_wrap; |
| 1003 |
/* do last line */
|
| 1004 |
deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width); |
| 1005 |
} |
| 1006 |
|
| 1007 |
static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap, |
| 1008 |
int width, int height) |
| 1009 |
{
|
| 1010 |
uint8_t *src_m1, *src_0, *src_p1, *src_p2; |
| 1011 |
int y;
|
| 1012 |
uint8_t *buf; |
| 1013 |
buf = (uint8_t*)av_malloc(width); |
| 1014 |
|
| 1015 |
src_m1 = src1; |
| 1016 |
memcpy(buf,src_m1,width); |
| 1017 |
src_0=&src_m1[src_wrap]; |
| 1018 |
src_p1=&src_0[src_wrap]; |
| 1019 |
src_p2=&src_p1[src_wrap]; |
| 1020 |
for(y=0;y<(height-2);y+=2) { |
| 1021 |
deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width); |
| 1022 |
src_m1 = src_p1; |
| 1023 |
src_0 = src_p2; |
| 1024 |
src_p1 += 2*src_wrap;
|
| 1025 |
src_p2 += 2*src_wrap;
|
| 1026 |
} |
| 1027 |
/* do last line */
|
| 1028 |
deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width); |
| 1029 |
av_free(buf); |
| 1030 |
} |
| 1031 |
|
| 1032 |
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src, |
| 1033 |
enum PixelFormat pix_fmt, int width, int height) |
| 1034 |
{
|
| 1035 |
int i;
|
| 1036 |
|
| 1037 |
if (pix_fmt != PIX_FMT_YUV420P &&
|
| 1038 |
pix_fmt != PIX_FMT_YUVJ420P && |
| 1039 |
pix_fmt != PIX_FMT_YUV422P && |
| 1040 |
pix_fmt != PIX_FMT_YUVJ422P && |
| 1041 |
pix_fmt != PIX_FMT_YUV444P && |
| 1042 |
pix_fmt != PIX_FMT_YUV411P && |
| 1043 |
pix_fmt != PIX_FMT_GRAY8) |
| 1044 |
return -1; |
| 1045 |
if ((width & 3) != 0 || (height & 3) != 0) |
| 1046 |
return -1; |
| 1047 |
|
| 1048 |
for(i=0;i<3;i++) { |
| 1049 |
if (i == 1) { |
| 1050 |
switch(pix_fmt) {
|
| 1051 |
case PIX_FMT_YUVJ420P:
|
| 1052 |
case PIX_FMT_YUV420P:
|
| 1053 |
width >>= 1;
|
| 1054 |
height >>= 1;
|
| 1055 |
break;
|
| 1056 |
case PIX_FMT_YUV422P:
|
| 1057 |
case PIX_FMT_YUVJ422P:
|
| 1058 |
width >>= 1;
|
| 1059 |
break;
|
| 1060 |
case PIX_FMT_YUV411P:
|
| 1061 |
width >>= 2;
|
| 1062 |
break;
|
| 1063 |
default:
|
| 1064 |
break;
|
| 1065 |
} |
| 1066 |
if (pix_fmt == PIX_FMT_GRAY8) {
|
| 1067 |
break;
|
| 1068 |
} |
| 1069 |
} |
| 1070 |
if (src == dst) {
|
| 1071 |
deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i], |
| 1072 |
width, height); |
| 1073 |
} else {
|
| 1074 |
deinterlace_bottom_field(dst->data[i],dst->linesize[i], |
| 1075 |
src->data[i], src->linesize[i], |
| 1076 |
width, height); |
| 1077 |
} |
| 1078 |
} |
| 1079 |
emms_c(); |
| 1080 |
return 0; |
| 1081 |
} |
| 1082 |
|