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@ -2252,8 +2252,9 @@ int img_crop(AVPicture *dst, const AVPicture *src, |
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/**
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* Pad image |
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*/ |
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int img_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix_fmt, |
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int padtop, int padbottom, int padleft, int padright, int *color) |
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int img_pad(AVPicture *dst, const AVPicture *src, int height, int width, |
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int pix_fmt, int padtop, int padbottom, int padleft, int padright, |
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int *color) |
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{ |
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uint8_t *optr, *iptr; |
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int y_shift; |
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@ -2261,30 +2262,34 @@ int img_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix |
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int yheight; |
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int i, y; |
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if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB || !is_yuv_planar(&pix_fmt_info[pix_fmt])) |
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return -1; |
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if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB || |
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!is_yuv_planar(&pix_fmt_info[pix_fmt])) return -1; |
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for (i = 0; i < 3; i++) { |
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x_shift = i ? pix_fmt_info[pix_fmt].x_chroma_shift : 0; |
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y_shift = i ? pix_fmt_info[pix_fmt].y_chroma_shift : 0; |
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if (padtop || padleft) { |
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memset(dst->data[i], color[i], dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift)); |
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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 || src) { |
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if (src) { /* first line */ |
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iptr = src->data[i]; |
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optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift); |
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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, src->linesize[i]); |
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iptr += src->linesize[i]; |
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} |
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optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) + (dst->linesize[i] - (padright >> x_shift)); |
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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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if (src) { |
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memcpy(optr + ((padleft + padright) >> x_shift), iptr, src->linesize[i]); |
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memcpy(optr + ((padleft + padright) >> x_shift), iptr, |
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src->linesize[i]); |
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iptr += src->linesize[i]; |
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} |
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optr += dst->linesize[i]; |
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@ -2292,8 +2297,10 @@ int img_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix |
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} |
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if (padbottom || padright) { |
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optr = dst->data[i] + dst->linesize[i] * ((height - padbottom) >> y_shift) - (padright >> x_shift); |
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memset(optr, color[i], dst->linesize[i] * (padbottom >> y_shift) + (padright >> x_shift)); |
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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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