87 lines
2.6 KiB
C
87 lines
2.6 KiB
C
/*
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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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#ifndef AVFILTER_OVERLAY_H
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#define AVFILTER_OVERLAY_H
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#include "libavutil/eval.h"
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#include "libavutil/pixdesc.h"
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#include "framesync.h"
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#include "avfilter.h"
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enum var_name {
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VAR_MAIN_W, VAR_MW,
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VAR_MAIN_H, VAR_MH,
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VAR_OVERLAY_W, VAR_OW,
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VAR_OVERLAY_H, VAR_OH,
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VAR_HSUB,
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VAR_VSUB,
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VAR_X,
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VAR_Y,
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VAR_N,
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VAR_POS,
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VAR_T,
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VAR_VARS_NB
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};
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enum OverlayFormat {
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OVERLAY_FORMAT_YUV420,
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OVERLAY_FORMAT_YUV422,
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OVERLAY_FORMAT_YUV444,
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OVERLAY_FORMAT_RGB,
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OVERLAY_FORMAT_GBRP,
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OVERLAY_FORMAT_AUTO,
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OVERLAY_FORMAT_NB
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};
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typedef struct OverlayContext {
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const AVClass *class;
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int x, y; ///< position of overlaid picture
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uint8_t main_is_packed_rgb;
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uint8_t main_rgba_map[4];
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uint8_t main_has_alpha;
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uint8_t overlay_is_packed_rgb;
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uint8_t overlay_rgba_map[4];
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uint8_t overlay_has_alpha;
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int format; ///< OverlayFormat
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int alpha_format;
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int eval_mode; ///< EvalMode
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FFFrameSync fs;
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int main_pix_step[4]; ///< steps per pixel for each plane of the main output
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int overlay_pix_step[4]; ///< steps per pixel for each plane of the overlay
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int hsub, vsub; ///< chroma subsampling values
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const AVPixFmtDescriptor *main_desc; ///< format descriptor for main input
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double var_values[VAR_VARS_NB];
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char *x_expr, *y_expr;
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AVExpr *x_pexpr, *y_pexpr;
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int (*blend_row[4])(uint8_t *d, uint8_t *da, uint8_t *s, uint8_t *a, int w,
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ptrdiff_t alinesize);
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int (*blend_slice)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
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} OverlayContext;
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void ff_overlay_init_x86(OverlayContext *s, int format, int pix_format,
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int alpha_format, int main_has_alpha);
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#endif /* AVFILTER_OVERLAY_H */
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