Fixes #6127.
Showing the changes to libavfilter (1 of 1 file). Show all
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| @@ -81,6 +81,9 @@ typedef struct ZPcontext { · 80 unmodified lines | |||
| 81 | char *x_expr_str; | 81 | char *x_expr_str; |
| 82 | char *y_expr_str; | 82 | char *y_expr_str; |
| 83 | char *duration_expr_str; | 83 | char *duration_expr_str; |
| 84 | |||
| 85 | AVExpr *zoom_expr, *x_expr, *y_expr; | ||
| 86 | |||
| 84 | int w, h; | 87 | int w, h; |
| 85 | double x, y; | 88 | double x, y; |
| 86 | double prev_zoom; | 89 | double prev_zoom; |
| @@ -123,6 +126,7 @@ static int config_output(AVFilterLink *outlink) · 36 unmodified lines | |||
| 123 | { | 126 | { |
| 124 | AVFilterContext *ctx = outlink->src; | 127 | AVFilterContext *ctx = outlink->src; |
| 125 | ZPContext *s = ctx->priv; | 128 | ZPContext *s = ctx->priv; |
| 129 | int ret; | ||
| 126 | 130 | ||
| 127 | outlink->w = s->w; | 131 | outlink->w = s->w; |
| 128 | outlink->h = s->h; | 132 | outlink->h = s->h; |
| @@ -130,6 +134,18 @@ static int config_output(AVFilterLink *outlink) · 1 unmodified line | |||
| 130 | outlink->frame_rate = s->framerate; | 134 | outlink->frame_rate = s->framerate; |
| 131 | s->desc = av_pix_fmt_desc_get(outlink->format); | 135 | s->desc = av_pix_fmt_desc_get(outlink->format); |
| 132 | 136 | ||
| 137 | ret = av_expr_parse(&s->zoom_expr, s->zoom_expr_str, var_names, NULL, NULL, NULL, NULL, 0, ctx); | ||
| 138 | if (ret < 0) | ||
| 139 | return ret; | ||
| 140 | |||
| 141 | ret = av_expr_parse(&s->x_expr, s->x_expr_str, var_names, NULL, NULL, NULL, NULL, 0, ctx); | ||
| 142 | if (ret < 0) | ||
| 143 | return ret; | ||
| 144 | |||
| 145 | ret = av_expr_parse(&s->y_expr, s->y_expr_str, var_names, NULL, NULL, NULL, NULL, 0, ctx); | ||
| 146 | if (ret < 0) | ||
| 147 | return ret; | ||
| 148 | |||
| 133 | return 0; | 149 | return 0; |
| 134 | } | 150 | } |
| 135 | 151 | ||
| @@ -151,28 +167,22 @@ static int output_single_frame(AVFilterContext *ctx, AVFrame *in, double *var_va · 15 unmodified lines | |||
| 151 | var_values[VAR_TIME] = pts * av_q2d(outlink->time_base); | 167 | var_values[VAR_TIME] = pts * av_q2d(outlink->time_base); |
| 152 | var_values[VAR_FRAME] = i; | 168 | var_values[VAR_FRAME] = i; |
| 153 | var_values[VAR_ON] = outlink->frame_count_in + 1; | 169 | var_values[VAR_ON] = outlink->frame_count_in + 1; |
| 154 | if ((ret = av_expr_parse_and_eval(zoom, s->zoom_expr_str, | 170 | |
| 155 | var_names, var_values, | 171 | *zoom = av_expr_eval(s->zoom_expr, var_values, NULL); |
| 156 | NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0) | ||
| 157 | return ret; | ||
| 158 | 172 | ||
| 159 | *zoom = av_clipd(*zoom, 1, 10); | 173 | *zoom = av_clipd(*zoom, 1, 10); |
| 160 | var_values[VAR_ZOOM] = *zoom; | 174 | var_values[VAR_ZOOM] = *zoom; |
| 161 | w = in->width * (1.0 / *zoom); | 175 | w = in->width * (1.0 / *zoom); |
| 162 | h = in->height * (1.0 / *zoom); | 176 | h = in->height * (1.0 / *zoom); |
| 163 | 177 | ||
| 164 | if ((ret = av_expr_parse_and_eval(dx, s->x_expr_str, | 178 | *dx = av_expr_eval(s->x_expr, var_values, NULL); |
| 165 | var_names, var_values, | 179 | |
| 166 | NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0) | ||
| 167 | return ret; | ||
| 168 | x = *dx = av_clipd(*dx, 0, FFMAX(in->width - w, 0)); | 180 | x = *dx = av_clipd(*dx, 0, FFMAX(in->width - w, 0)); |
| 169 | var_values[VAR_X] = *dx; | 181 | var_values[VAR_X] = *dx; |
| 170 | x &= ~((1 << s->desc->log2_chroma_w) - 1); | 182 | x &= ~((1 << s->desc->log2_chroma_w) - 1); |
| 171 | 183 | ||
| 172 | if ((ret = av_expr_parse_and_eval(dy, s->y_expr_str, | 184 | *dy = av_expr_eval(s->y_expr, var_values, NULL); |
| 173 | var_names, var_values, | 185 | |
| 174 | NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0) | ||
| 175 | return ret; | ||
| 176 | y = *dy = av_clipd(*dy, 0, FFMAX(in->height - h, 0)); | 186 | y = *dy = av_clipd(*dy, 0, FFMAX(in->height - h, 0)); |
| 177 | var_values[VAR_Y] = *dy; | 187 | var_values[VAR_Y] = *dy; |
| 178 | y &= ~((1 << s->desc->log2_chroma_h) - 1); | 188 | y &= ~((1 << s->desc->log2_chroma_h) - 1); |