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50 lines
2.0 KiB
50 lines
2.0 KiB
/* |
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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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#include "libavutil/imgutils.h" |
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#include "lswsutils.h" |
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int ff_scale_image(uint8_t *dst_data[4], int dst_linesize[4], |
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int dst_w, int dst_h, enum PixelFormat dst_pix_fmt, |
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uint8_t * const src_data[4], int src_linesize[4], |
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int src_w, int src_h, enum PixelFormat src_pix_fmt, |
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void *log_ctx) |
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{ |
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int ret; |
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struct SwsContext *sws_ctx = sws_getContext(src_w, src_h, src_pix_fmt, |
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dst_w, dst_h, dst_pix_fmt, |
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SWS_BILINEAR, NULL, NULL, NULL); |
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if (!sws_ctx) { |
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av_log(log_ctx, AV_LOG_ERROR, |
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"Impossible to create scale context for the conversion " |
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"fmt:%s s:%dx%d -> fmt:%s s:%dx%d\n", |
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av_get_pix_fmt_name(src_pix_fmt), src_w, src_h, |
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av_get_pix_fmt_name(dst_pix_fmt), dst_w, dst_h); |
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ret = AVERROR(EINVAL); |
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goto end; |
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} |
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if ((ret = av_image_alloc(dst_data, dst_linesize, dst_w, dst_h, dst_pix_fmt, 16)) < 0) |
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goto end; |
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ret = 0; |
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sws_scale(sws_ctx, src_data, src_linesize, 0, src_h, dst_data, dst_linesize); |
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end: |
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sws_freeContext(sws_ctx); |
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return ret; |
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}
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