652 lines
21 KiB
C
652 lines
21 KiB
C
/*
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* Misc image conversion routines
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* Copyright (c) 2001, 2002, 2003 Fabrice Bellard
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* misc image conversion routines
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*/
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/* TODO:
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* - write 'ffimg' program to test all the image related stuff
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* - move all api to slice based system
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* - integrate deinterlacing, postprocessing and scaling in the conversion process
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*/
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#include "avcodec.h"
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#include "dsputil.h"
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#include "internal.h"
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#include "libavutil/avassert.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_NA -1
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#define FF_COLOR_RGB 0 /**< RGB color space */
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#define FF_COLOR_GRAY 1 /**< gray color space */
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#define FF_COLOR_YUV 2 /**< YUV color space. 16 <= Y <= 235, 16 <= U, V <= 240 */
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#define FF_COLOR_YUV_JPEG 3 /**< YUV color space. 0 <= Y <= 255, 0 <= U, V <= 255 */
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#if HAVE_MMX_EXTERNAL
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#define deinterlace_line_inplace ff_deinterlace_line_inplace_mmx
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#define deinterlace_line ff_deinterlace_line_mmx
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#else
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#define deinterlace_line_inplace deinterlace_line_inplace_c
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#define deinterlace_line deinterlace_line_c
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#endif
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#define pixdesc_has_alpha(pixdesc) \
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((pixdesc)->nb_components == 2 || (pixdesc)->nb_components == 4 || (pixdesc)->flags & PIX_FMT_PAL)
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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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av_assert0(desc);
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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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static get_color_type(AVPixFmtDescriptor *desc) {
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if(desc->nb_components == 1 || desc->nb_components == 2)
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return FF_COLOR_GRAY;
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if(desc->name && !strncmp(desc->name, "yuvj", 4))
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return FF_COLOR_YUV_JPEG;
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if(desc->flags & PIX_FMT_RGB)
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return FF_COLOR_RGB;
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if(desc->nb_components == 0)
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return FF_COLOR_NA;
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return FF_COLOR_YUV;
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}
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static int get_pix_fmt_depth(int *min, int *max, 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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int i;
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if (!desc || !desc->nb_components) {
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*min = *max = 0;
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return AVERROR(EINVAL);
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}
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*min = INT_MAX, *max = -INT_MAX;
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for (i = 0; i < desc->nb_components; i++) {
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*min = FFMIN(desc->comp[i].depth_minus1+1, *min);
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*max = FFMAX(desc->comp[i].depth_minus1+1, *max);
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}
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return 0;
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}
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int avcodec_get_pix_fmt_loss(enum AVPixelFormat dst_pix_fmt,
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enum AVPixelFormat src_pix_fmt,
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int has_alpha)
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{
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const AVPixFmtDescriptor *src_desc = av_pix_fmt_desc_get(src_pix_fmt);
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const AVPixFmtDescriptor *dst_desc = av_pix_fmt_desc_get(dst_pix_fmt);
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int src_color, dst_color;
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int src_min_depth, src_max_depth, dst_min_depth, dst_max_depth;
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int ret, loss, i, nb_components;
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if (dst_pix_fmt >= AV_PIX_FMT_NB || dst_pix_fmt <= AV_PIX_FMT_NONE)
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return ~0;
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/* compute loss */
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loss = 0;
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if (dst_pix_fmt == src_pix_fmt)
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return 0;
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if ((ret = get_pix_fmt_depth(&src_min_depth, &src_max_depth, src_pix_fmt)) < 0)
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return ret;
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if ((ret = get_pix_fmt_depth(&dst_min_depth, &dst_max_depth, dst_pix_fmt)) < 0)
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return ret;
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src_color = get_color_type(src_desc);
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dst_color = get_color_type(dst_desc);
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nb_components = FFMIN(src_desc->nb_components, dst_desc->nb_components);
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for (i = 0; i < nb_components; i++)
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if (src_desc->comp[i].depth_minus1 > dst_desc->comp[i].depth_minus1)
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loss |= FF_LOSS_DEPTH;
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if (dst_desc->log2_chroma_w > src_desc->log2_chroma_w ||
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dst_desc->log2_chroma_h > src_desc->log2_chroma_h)
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loss |= FF_LOSS_RESOLUTION;
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switch(dst_color) {
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case FF_COLOR_RGB:
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if (src_color != FF_COLOR_RGB &&
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src_color != FF_COLOR_GRAY)
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loss |= FF_LOSS_COLORSPACE;
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break;
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case FF_COLOR_GRAY:
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if (src_color != FF_COLOR_GRAY)
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loss |= FF_LOSS_COLORSPACE;
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break;
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case FF_COLOR_YUV:
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if (src_color != FF_COLOR_YUV)
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loss |= FF_LOSS_COLORSPACE;
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break;
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case FF_COLOR_YUV_JPEG:
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if (src_color != FF_COLOR_YUV_JPEG &&
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src_color != FF_COLOR_YUV &&
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src_color != FF_COLOR_GRAY)
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loss |= FF_LOSS_COLORSPACE;
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break;
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default:
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/* fail safe test */
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if (src_color != dst_color)
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loss |= FF_LOSS_COLORSPACE;
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break;
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}
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if (dst_color == FF_COLOR_GRAY &&
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src_color != FF_COLOR_GRAY)
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loss |= FF_LOSS_CHROMA;
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if (!pixdesc_has_alpha(dst_desc) && (pixdesc_has_alpha(src_desc) && has_alpha))
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loss |= FF_LOSS_ALPHA;
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if (dst_pix_fmt == AV_PIX_FMT_PAL8 &&
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(src_pix_fmt != AV_PIX_FMT_PAL8 && (src_color != FF_COLOR_GRAY || (pixdesc_has_alpha(src_desc) && has_alpha))))
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loss |= FF_LOSS_COLORQUANT;
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return loss;
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}
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#if FF_API_FIND_BEST_PIX_FMT
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enum AVPixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum AVPixelFormat src_pix_fmt,
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int has_alpha, int *loss_ptr)
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{
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enum AVPixelFormat dst_pix_fmt;
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int i;
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if (loss_ptr) /* all losses count (for backward compatibility) */
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*loss_ptr = 0;
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dst_pix_fmt = AV_PIX_FMT_NONE; /* so first iteration doesn't have to be treated special */
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for(i = 0; i< FFMIN(AV_PIX_FMT_NB, 64); i++){
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if (pix_fmt_mask & (1ULL << i))
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dst_pix_fmt = avcodec_find_best_pix_fmt_of_2(dst_pix_fmt, i, src_pix_fmt, has_alpha, loss_ptr);
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}
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return dst_pix_fmt;
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}
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#endif /* FF_API_FIND_BEST_PIX_FMT */
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enum AVPixelFormat avcodec_find_best_pix_fmt_of_2(enum AVPixelFormat dst_pix_fmt1, enum AVPixelFormat dst_pix_fmt2,
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enum AVPixelFormat src_pix_fmt, int has_alpha, int *loss_ptr)
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{
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enum AVPixelFormat dst_pix_fmt;
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int loss1, loss2, loss_order1, loss_order2, i, loss_mask;
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const AVPixFmtDescriptor *desc1 = av_pix_fmt_desc_get(dst_pix_fmt1);
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const AVPixFmtDescriptor *desc2 = av_pix_fmt_desc_get(dst_pix_fmt2);
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static const int loss_mask_order[] = {
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~0, /* no loss first */
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~FF_LOSS_ALPHA,
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~FF_LOSS_RESOLUTION,
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~FF_LOSS_COLORSPACE,
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~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
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~FF_LOSS_COLORQUANT,
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~FF_LOSS_DEPTH,
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~(FF_LOSS_DEPTH|FF_LOSS_COLORSPACE),
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~(FF_LOSS_RESOLUTION | FF_LOSS_DEPTH | FF_LOSS_COLORSPACE | FF_LOSS_ALPHA |
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FF_LOSS_COLORQUANT | FF_LOSS_CHROMA),
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0x80000, //non zero entry that combines all loss variants including future additions
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0,
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};
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loss_mask= loss_ptr?~*loss_ptr:~0; /* use loss mask if provided */
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dst_pix_fmt = AV_PIX_FMT_NONE;
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loss1 = avcodec_get_pix_fmt_loss(dst_pix_fmt1, src_pix_fmt, has_alpha) & loss_mask;
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loss2 = avcodec_get_pix_fmt_loss(dst_pix_fmt2, src_pix_fmt, has_alpha) & loss_mask;
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/* try with successive loss */
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for(i = 0;loss_mask_order[i] != 0 && dst_pix_fmt == AV_PIX_FMT_NONE;i++) {
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loss_order1 = loss1 & loss_mask_order[i];
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loss_order2 = loss2 & loss_mask_order[i];
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if (loss_order1 == 0 && loss_order2 == 0 && dst_pix_fmt2 != AV_PIX_FMT_NONE && dst_pix_fmt1 != AV_PIX_FMT_NONE){ /* use format with smallest depth */
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if(av_get_padded_bits_per_pixel(desc2) != av_get_padded_bits_per_pixel(desc1)) {
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dst_pix_fmt = av_get_padded_bits_per_pixel(desc2) < av_get_padded_bits_per_pixel(desc1) ? dst_pix_fmt2 : dst_pix_fmt1;
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} else {
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dst_pix_fmt = desc2->nb_components < desc1->nb_components ? dst_pix_fmt2 : dst_pix_fmt1;
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}
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} else if (loss_order1 == 0 || loss_order2 == 0) { /* use format with no loss */
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dst_pix_fmt = loss_order2 ? dst_pix_fmt1 : dst_pix_fmt2;
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}
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}
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if (loss_ptr)
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*loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
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return dst_pix_fmt;
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}
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#if AV_HAVE_INCOMPATIBLE_FORK_ABI
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enum AVPixelFormat avcodec_find_best_pix_fmt2(enum AVPixelFormat *pix_fmt_list,
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enum AVPixelFormat src_pix_fmt,
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int has_alpha, int *loss_ptr){
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return avcodec_find_best_pix_fmt_of_list(pix_fmt_list, src_pix_fmt, has_alpha, loss_ptr);
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}
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#else
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enum AVPixelFormat avcodec_find_best_pix_fmt2(enum AVPixelFormat dst_pix_fmt1, enum AVPixelFormat dst_pix_fmt2,
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enum AVPixelFormat src_pix_fmt, int has_alpha, int *loss_ptr)
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{
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return avcodec_find_best_pix_fmt_of_2(dst_pix_fmt1, dst_pix_fmt2, src_pix_fmt, has_alpha, loss_ptr);
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}
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#endif
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enum AVPixelFormat avcodec_find_best_pix_fmt_of_list(enum AVPixelFormat *pix_fmt_list,
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enum AVPixelFormat src_pix_fmt,
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int has_alpha, int *loss_ptr){
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int i;
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enum AVPixelFormat best = AV_PIX_FMT_NONE;
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for(i=0; pix_fmt_list[i] != AV_PIX_FMT_NONE; i++)
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best = avcodec_find_best_pix_fmt_of_2(best, pix_fmt_list[i], src_pix_fmt, has_alpha, loss_ptr);
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return best;
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}
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/* 2x2 -> 1x1 */
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void ff_shrink22(uint8_t *dst, int dst_wrap,
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const uint8_t *src, int src_wrap,
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int width, int height)
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{
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int w;
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const uint8_t *s1, *s2;
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uint8_t *d;
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for(;height > 0; height--) {
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s1 = src;
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s2 = s1 + src_wrap;
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d = dst;
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for(w = width;w >= 4; w-=4) {
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d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
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d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
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d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
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d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
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s1 += 8;
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s2 += 8;
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d += 4;
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}
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for(;w > 0; w--) {
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d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
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s1 += 2;
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s2 += 2;
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d++;
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}
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src += 2 * src_wrap;
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dst += dst_wrap;
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}
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}
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/* 4x4 -> 1x1 */
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void ff_shrink44(uint8_t *dst, int dst_wrap,
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const uint8_t *src, int src_wrap,
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int width, int height)
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{
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int w;
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const uint8_t *s1, *s2, *s3, *s4;
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uint8_t *d;
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for(;height > 0; height--) {
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s1 = src;
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s2 = s1 + src_wrap;
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s3 = s2 + src_wrap;
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s4 = s3 + src_wrap;
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d = dst;
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for(w = width;w > 0; w--) {
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d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
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s2[0] + s2[1] + s2[2] + s2[3] +
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s3[0] + s3[1] + s3[2] + s3[3] +
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s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
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s1 += 4;
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s2 += 4;
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s3 += 4;
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s4 += 4;
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d++;
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}
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src += 4 * src_wrap;
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dst += dst_wrap;
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}
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}
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/* 8x8 -> 1x1 */
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void ff_shrink88(uint8_t *dst, int dst_wrap,
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const uint8_t *src, int src_wrap,
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int width, int height)
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{
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int w, i;
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for(;height > 0; height--) {
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for(w = width;w > 0; w--) {
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int tmp=0;
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for(i=0; i<8; i++){
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tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7];
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src += src_wrap;
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}
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*(dst++) = (tmp + 32)>>6;
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src += 8 - 8*src_wrap;
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}
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src += 8*src_wrap - 8*width;
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dst += dst_wrap - width;
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}
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}
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/* return true if yuv planar */
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static inline int is_yuv_planar(const AVPixFmtDescriptor *desc)
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{
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int i;
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int planes[4] = { 0 };
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if ( desc->flags & PIX_FMT_RGB
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|| !(desc->flags & PIX_FMT_PLANAR))
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return 0;
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/* set the used planes */
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for (i = 0; i < desc->nb_components; i++)
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planes[desc->comp[i].plane] = 1;
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/* if there is an unused plane, the format is not planar */
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for (i = 0; i < desc->nb_components; i++)
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if (!planes[i])
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return 0;
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return 1;
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}
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int av_picture_crop(AVPicture *dst, const AVPicture *src,
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enum AVPixelFormat pix_fmt, int top_band, int left_band)
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{
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
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int y_shift;
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int x_shift;
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if (pix_fmt < 0 || pix_fmt >= AV_PIX_FMT_NB)
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return -1;
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y_shift = desc->log2_chroma_h;
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x_shift = desc->log2_chroma_w;
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if (is_yuv_planar(desc)) {
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dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
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dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift);
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dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift);
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} else{
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if(top_band % (1<<y_shift) || left_band % (1<<x_shift))
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return -1;
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if(left_band) //FIXME add support for this too
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return -1;
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dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
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}
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dst->linesize[0] = src->linesize[0];
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dst->linesize[1] = src->linesize[1];
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dst->linesize[2] = src->linesize[2];
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return 0;
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}
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int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
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enum AVPixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright,
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int *color)
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{
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
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uint8_t *optr;
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int y_shift;
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int x_shift;
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int yheight;
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int i, y;
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if (pix_fmt < 0 || pix_fmt >= AV_PIX_FMT_NB ||
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!is_yuv_planar(desc)) return -1;
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for (i = 0; i < 3; i++) {
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x_shift = i ? desc->log2_chroma_w : 0;
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y_shift = i ? desc->log2_chroma_h : 0;
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if (padtop || padleft) {
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memset(dst->data[i], color[i],
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dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift));
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}
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if (padleft || padright) {
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optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
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(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;
|
|
}
|
|
|
|
#ifdef TEST
|
|
|
|
int main(void){
|
|
int i;
|
|
int err=0;
|
|
|
|
for (i=0; i<AV_PIX_FMT_NB*2; i++) {
|
|
AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(i);
|
|
if(!desc)
|
|
continue;
|
|
av_log(0, AV_LOG_INFO, "pix fmt %s yuv_plan:%d avg_bpp:%d colortype:%d\n", desc->name, is_yuv_planar(desc), av_get_padded_bits_per_pixel(desc), get_color_type(desc));
|
|
if ((!(desc->flags & PIX_FMT_ALPHA)) != (desc->nb_components != 2 && desc->nb_components != 4)) {
|
|
av_log(0, AV_LOG_ERROR, "Alpha flag mismatch\n");
|
|
err = 1;
|
|
}
|
|
}
|
|
return err;
|
|
}
|
|
|
|
#endif
|