GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/imgconvert.c Lines: 2 106 1.9 %
Date: 2019-11-22 03:34:36 Branches: 0 74 0.0 %

Line Branch Exec Source
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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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#include "avcodec.h"
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#include "internal.h"
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#include "mathops.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/internal.h"
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#include "libavutil/imgutils.h"
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#if FF_API_GETCHROMA
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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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#endif
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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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    return av_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
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}
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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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    return av_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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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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enum AVPixelFormat avcodec_find_best_pix_fmt_of_list(const 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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    int loss;
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    for (i=0; pix_fmt_list[i] != AV_PIX_FMT_NONE; i++) {
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        loss = loss_ptr ? *loss_ptr : 0;
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        best = avcodec_find_best_pix_fmt_of_2(best, pix_fmt_list[i], src_pix_fmt, has_alpha, &loss);
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    }
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    if (loss_ptr)
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        *loss_ptr = loss;
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    return best;
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}
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#if FF_API_AVPICTURE
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FF_DISABLE_DEPRECATION_WARNINGS
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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 & AV_PIX_FMT_FLAG_RGB
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        || !(desc->flags & AV_PIX_FMT_FLAG_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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    int max_step[4];
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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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    av_image_fill_max_pixsteps(max_step, NULL, desc);
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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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        dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + (left_band * max_step[0]);
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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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    int max_step[4];
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    if (pix_fmt < 0 || pix_fmt >= AV_PIX_FMT_NB)
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        return -1;
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    if (!is_yuv_planar(desc)) {
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        if (src)
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            return -1; //TODO: Not yet implemented
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        av_image_fill_max_pixsteps(max_step, NULL, desc);
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        if (padtop || padleft) {
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            memset(dst->data[0], color[0],
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                    dst->linesize[0] * padtop + (padleft * max_step[0]));
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        }
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        if (padleft || padright) {
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            optr = dst->data[0] + dst->linesize[0] * padtop +
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                    (dst->linesize[0] - (padright * max_step[0]));
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            yheight = height - 1 - (padtop + padbottom);
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            for (y = 0; y < yheight; y++) {
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                memset(optr, color[0], (padleft + padright) * max_step[0]);
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                optr += dst->linesize[0];
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            }
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        }
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        if (padbottom || padright) {
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            optr = dst->data[0] + dst->linesize[0] * (height - padbottom) -
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                    (padright * max_step[0]);
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            memset(optr, color[0], dst->linesize[0] * padbottom +
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                    (padright * max_step[0]));
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        }
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        return 0;
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    }
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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));
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            yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
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            for (y = 0; y < yheight; y++) {
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                memset(optr, color[i], (padleft + padright) >> x_shift);
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                optr += dst->linesize[i];
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            }
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        }
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        if (src) { /* first line */
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            uint8_t *iptr = src->data[i];
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            optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
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                    (padleft >> x_shift);
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            memcpy(optr, iptr, (width - padleft - padright) >> x_shift);
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            iptr += src->linesize[i];
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            optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
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                (dst->linesize[i] - (padright >> x_shift));
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            yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
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            for (y = 0; y < yheight; y++) {
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                memset(optr, color[i], (padleft + padright) >> x_shift);
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                memcpy(optr + ((padleft + padright) >> x_shift), iptr,
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                       (width - padleft - padright) >> x_shift);
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                iptr += src->linesize[i];
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                optr += dst->linesize[i];
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            }
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        }
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        if (padbottom || padright) {
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            optr = dst->data[i] + dst->linesize[i] *
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                ((height - padbottom) >> y_shift) - (padright >> x_shift);
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            memset(optr, color[i],dst->linesize[i] *
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                (padbottom >> y_shift) + (padright >> x_shift));
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        }
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    }
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    return 0;
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}
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FF_ENABLE_DEPRECATION_WARNINGS
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#endif /* FF_API_AVPICTURE */