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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6148 | serge | 1 | /* |
| 2 | * Copyright (c) 2007 Bobby Bingham |
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| 3 | * |
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| 4 | * This file is part of FFmpeg. |
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| 5 | * |
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| 6 | * FFmpeg is free software; you can redistribute it and/or |
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| 7 | * modify it under the terms of the GNU Lesser General Public |
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| 8 | * License as published by the Free Software Foundation; either |
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| 9 | * version 2.1 of the License, or (at your option) any later version. |
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| 10 | * |
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| 11 | * FFmpeg is distributed in the hope that it will be useful, |
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 14 | * Lesser General Public License for more details. |
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| 15 | * |
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| 16 | * You should have received a copy of the GNU Lesser General Public |
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| 17 | * License along with FFmpeg; if not, write to the Free Software |
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| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 19 | */ |
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| 20 | |||
| 21 | /** |
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| 22 | * @file |
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| 23 | * scale video filter |
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| 24 | */ |
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| 25 | |||
| 26 | #include |
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| 27 | #include |
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| 28 | |||
| 29 | #include "avfilter.h" |
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| 30 | #include "formats.h" |
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| 31 | #include "internal.h" |
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| 32 | #include "video.h" |
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| 33 | #include "libavutil/avstring.h" |
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| 34 | #include "libavutil/eval.h" |
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| 35 | #include "libavutil/internal.h" |
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| 36 | #include "libavutil/mathematics.h" |
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| 37 | #include "libavutil/opt.h" |
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| 38 | #include "libavutil/parseutils.h" |
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| 39 | #include "libavutil/pixdesc.h" |
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| 40 | #include "libavutil/imgutils.h" |
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| 41 | #include "libavutil/avassert.h" |
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| 42 | #include "libswscale/swscale.h" |
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| 43 | |||
| 44 | static const char *const var_names[] = { |
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| 45 | "in_w", "iw", |
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| 46 | "in_h", "ih", |
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| 47 | "out_w", "ow", |
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| 48 | "out_h", "oh", |
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| 49 | "a", |
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| 50 | "sar", |
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| 51 | "dar", |
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| 52 | "hsub", |
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| 53 | "vsub", |
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| 54 | NULL |
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| 55 | }; |
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| 56 | |||
| 57 | enum var_name { |
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| 58 | VAR_IN_W, VAR_IW, |
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| 59 | VAR_IN_H, VAR_IH, |
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| 60 | VAR_OUT_W, VAR_OW, |
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| 61 | VAR_OUT_H, VAR_OH, |
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| 62 | VAR_A, |
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| 63 | VAR_SAR, |
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| 64 | VAR_DAR, |
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| 65 | VAR_HSUB, |
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| 66 | VAR_VSUB, |
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| 67 | VARS_NB |
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| 68 | }; |
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| 69 | |||
| 70 | typedef struct { |
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| 71 | const AVClass *class; |
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| 72 | struct SwsContext *sws; ///< software scaler context |
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| 73 | struct SwsContext *isws[2]; ///< software scaler context for interlaced material |
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| 74 | AVDictionary *opts; |
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| 75 | |||
| 76 | /** |
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| 77 | * New dimensions. Special values are: |
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| 78 | * 0 = original width/height |
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| 79 | * -1 = keep original aspect |
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| 80 | */ |
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| 81 | int w, h; |
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| 82 | char *size_str; |
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| 83 | unsigned int flags; ///sws flags |
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| 84 | |||
| 85 | int hsub, vsub; ///< chroma subsampling |
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| 86 | int slice_y; ///< top of current output slice |
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| 87 | int input_is_pal; ///< set to 1 if the input format is paletted |
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| 88 | int output_is_pal; ///< set to 1 if the output format is paletted |
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| 89 | int interlaced; |
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| 90 | |||
| 91 | char *w_expr; ///< width expression string |
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| 92 | char *h_expr; ///< height expression string |
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| 93 | char *flags_str; |
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| 94 | |||
| 95 | char *in_color_matrix; |
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| 96 | char *out_color_matrix; |
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| 97 | |||
| 98 | int in_range; |
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| 99 | int out_range; |
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| 100 | |||
| 101 | int out_h_chr_pos; |
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| 102 | int out_v_chr_pos; |
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| 103 | int in_h_chr_pos; |
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| 104 | int in_v_chr_pos; |
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| 105 | |||
| 106 | int force_original_aspect_ratio; |
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| 107 | } ScaleContext; |
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| 108 | |||
| 109 | static av_cold int init_dict(AVFilterContext *ctx, AVDictionary **opts) |
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| 110 | { |
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| 111 | ScaleContext *scale = ctx->priv; |
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| 112 | int ret; |
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| 113 | |||
| 114 | if (scale->size_str && (scale->w_expr || scale->h_expr)) { |
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| 115 | av_log(ctx, AV_LOG_ERROR, |
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| 116 | "Size and width/height expressions cannot be set at the same time.\n"); |
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| 117 | return AVERROR(EINVAL); |
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| 118 | } |
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| 119 | |||
| 120 | if (scale->w_expr && !scale->h_expr) |
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| 121 | FFSWAP(char *, scale->w_expr, scale->size_str); |
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| 122 | |||
| 123 | if (scale->size_str) { |
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| 124 | char buf[32]; |
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| 125 | if ((ret = av_parse_video_size(&scale->w, &scale->h, scale->size_str)) < 0) { |
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| 126 | av_log(ctx, AV_LOG_ERROR, |
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| 127 | "Invalid size '%s'\n", scale->size_str); |
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| 128 | return ret; |
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| 129 | } |
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| 130 | snprintf(buf, sizeof(buf)-1, "%d", scale->w); |
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| 131 | av_opt_set(scale, "w", buf, 0); |
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| 132 | snprintf(buf, sizeof(buf)-1, "%d", scale->h); |
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| 133 | av_opt_set(scale, "h", buf, 0); |
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| 134 | } |
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| 135 | if (!scale->w_expr) |
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| 136 | av_opt_set(scale, "w", "iw", 0); |
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| 137 | if (!scale->h_expr) |
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| 138 | av_opt_set(scale, "h", "ih", 0); |
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| 139 | |||
| 140 | av_log(ctx, AV_LOG_VERBOSE, "w:%s h:%s flags:'%s' interl:%d\n", |
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| 141 | scale->w_expr, scale->h_expr, (char *)av_x_if_null(scale->flags_str, ""), scale->interlaced); |
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| 142 | |||
| 143 | scale->flags = 0; |
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| 144 | |||
| 145 | if (scale->flags_str) { |
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| 146 | const AVClass *class = sws_get_class(); |
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| 147 | const AVOption *o = av_opt_find(&class, "sws_flags", NULL, 0, |
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| 148 | AV_OPT_SEARCH_FAKE_OBJ); |
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| 149 | int ret = av_opt_eval_flags(&class, o, scale->flags_str, &scale->flags); |
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| 150 | if (ret < 0) |
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| 151 | return ret; |
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| 152 | } |
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| 153 | scale->opts = *opts; |
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| 154 | *opts = NULL; |
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| 155 | |||
| 156 | return 0; |
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| 157 | } |
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| 158 | |||
| 159 | static av_cold void uninit(AVFilterContext *ctx) |
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| 160 | { |
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| 161 | ScaleContext *scale = ctx->priv; |
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| 162 | sws_freeContext(scale->sws); |
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| 163 | sws_freeContext(scale->isws[0]); |
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| 164 | sws_freeContext(scale->isws[1]); |
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| 165 | scale->sws = NULL; |
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| 166 | av_dict_free(&scale->opts); |
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| 167 | } |
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| 168 | |||
| 169 | static int query_formats(AVFilterContext *ctx) |
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| 170 | { |
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| 171 | AVFilterFormats *formats; |
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| 172 | enum AVPixelFormat pix_fmt; |
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| 173 | int ret; |
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| 174 | |||
| 175 | if (ctx->inputs[0]) { |
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| 176 | formats = NULL; |
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| 177 | for (pix_fmt = 0; pix_fmt < AV_PIX_FMT_NB; pix_fmt++) |
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| 178 | if ((sws_isSupportedInput(pix_fmt) || |
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| 179 | sws_isSupportedEndiannessConversion(pix_fmt)) |
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| 180 | && (ret = ff_add_format(&formats, pix_fmt)) < 0) { |
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| 181 | ff_formats_unref(&formats); |
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| 182 | return ret; |
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| 183 | } |
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| 184 | ff_formats_ref(formats, &ctx->inputs[0]->out_formats); |
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| 185 | } |
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| 186 | if (ctx->outputs[0]) { |
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| 187 | formats = NULL; |
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| 188 | for (pix_fmt = 0; pix_fmt < AV_PIX_FMT_NB; pix_fmt++) |
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| 189 | if ((sws_isSupportedOutput(pix_fmt) || pix_fmt == AV_PIX_FMT_PAL8 || |
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| 190 | sws_isSupportedEndiannessConversion(pix_fmt)) |
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| 191 | && (ret = ff_add_format(&formats, pix_fmt)) < 0) { |
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| 192 | ff_formats_unref(&formats); |
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| 193 | return ret; |
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| 194 | } |
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| 195 | ff_formats_ref(formats, &ctx->outputs[0]->in_formats); |
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| 196 | } |
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| 197 | |||
| 198 | return 0; |
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| 199 | } |
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| 200 | |||
| 201 | static const int *parse_yuv_type(const char *s, enum AVColorSpace colorspace) |
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| 202 | { |
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| 203 | if (!s) |
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| 204 | s = "bt601"; |
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| 205 | |||
| 206 | if (s && strstr(s, "bt709")) { |
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| 207 | colorspace = AVCOL_SPC_BT709; |
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| 208 | } else if (s && strstr(s, "fcc")) { |
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| 209 | colorspace = AVCOL_SPC_FCC; |
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| 210 | } else if (s && strstr(s, "smpte240m")) { |
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| 211 | colorspace = AVCOL_SPC_SMPTE240M; |
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| 212 | } else if (s && (strstr(s, "bt601") || strstr(s, "bt470") || strstr(s, "smpte170m"))) { |
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| 213 | colorspace = AVCOL_SPC_BT470BG; |
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| 214 | } |
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| 215 | |||
| 216 | if (colorspace < 1 || colorspace > 7) { |
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| 217 | colorspace = AVCOL_SPC_BT470BG; |
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| 218 | } |
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| 219 | |||
| 220 | return sws_getCoefficients(colorspace); |
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| 221 | } |
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| 222 | |||
| 223 | static int config_props(AVFilterLink *outlink) |
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| 224 | { |
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| 225 | AVFilterContext *ctx = outlink->src; |
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| 226 | AVFilterLink *inlink = outlink->src->inputs[0]; |
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| 227 | enum AVPixelFormat outfmt = outlink->format; |
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| 228 | ScaleContext *scale = ctx->priv; |
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| 229 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); |
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| 230 | int64_t w, h; |
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| 231 | double var_values[VARS_NB], res; |
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| 232 | char *expr; |
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| 233 | int ret; |
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| 234 | |||
| 235 | var_values[VAR_IN_W] = var_values[VAR_IW] = inlink->w; |
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| 236 | var_values[VAR_IN_H] = var_values[VAR_IH] = inlink->h; |
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| 237 | var_values[VAR_OUT_W] = var_values[VAR_OW] = NAN; |
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| 238 | var_values[VAR_OUT_H] = var_values[VAR_OH] = NAN; |
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| 239 | var_values[VAR_A] = (double) inlink->w / inlink->h; |
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| 240 | var_values[VAR_SAR] = inlink->sample_aspect_ratio.num ? |
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| 241 | (double) inlink->sample_aspect_ratio.num / inlink->sample_aspect_ratio.den : 1; |
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| 242 | var_values[VAR_DAR] = var_values[VAR_A] * var_values[VAR_SAR]; |
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| 243 | var_values[VAR_HSUB] = 1 << desc->log2_chroma_w; |
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| 244 | var_values[VAR_VSUB] = 1 << desc->log2_chroma_h; |
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| 245 | |||
| 246 | /* evaluate width and height */ |
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| 247 | av_expr_parse_and_eval(&res, (expr = scale->w_expr), |
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| 248 | var_names, var_values, |
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| 249 | NULL, NULL, NULL, NULL, NULL, 0, ctx); |
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| 250 | scale->w = var_values[VAR_OUT_W] = var_values[VAR_OW] = res; |
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| 251 | if ((ret = av_expr_parse_and_eval(&res, (expr = scale->h_expr), |
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| 252 | var_names, var_values, |
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| 253 | NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0) |
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| 254 | goto fail; |
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| 255 | scale->h = var_values[VAR_OUT_H] = var_values[VAR_OH] = res; |
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| 256 | /* evaluate again the width, as it may depend on the output height */ |
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| 257 | if ((ret = av_expr_parse_and_eval(&res, (expr = scale->w_expr), |
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| 258 | var_names, var_values, |
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| 259 | NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0) |
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| 260 | goto fail; |
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| 261 | scale->w = res; |
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| 262 | |||
| 263 | w = scale->w; |
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| 264 | h = scale->h; |
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| 265 | |||
| 266 | /* sanity check params */ |
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| 267 | if (w < -1 || h < -1) { |
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| 268 | av_log(ctx, AV_LOG_ERROR, "Size values less than -1 are not acceptable.\n"); |
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| 269 | return AVERROR(EINVAL); |
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| 270 | } |
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| 271 | if (w == -1 && h == -1) |
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| 272 | scale->w = scale->h = 0; |
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| 273 | |||
| 274 | if (!(w = scale->w)) |
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| 275 | w = inlink->w; |
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| 276 | if (!(h = scale->h)) |
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| 277 | h = inlink->h; |
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| 278 | if (w == -1) |
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| 279 | w = av_rescale(h, inlink->w, inlink->h); |
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| 280 | if (h == -1) |
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| 281 | h = av_rescale(w, inlink->h, inlink->w); |
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| 282 | |||
| 283 | if (scale->force_original_aspect_ratio) { |
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| 284 | int tmp_w = av_rescale(h, inlink->w, inlink->h); |
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| 285 | int tmp_h = av_rescale(w, inlink->h, inlink->w); |
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| 286 | |||
| 287 | if (scale->force_original_aspect_ratio == 1) { |
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| 288 | w = FFMIN(tmp_w, w); |
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| 289 | h = FFMIN(tmp_h, h); |
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| 290 | } else { |
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| 291 | w = FFMAX(tmp_w, w); |
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| 292 | h = FFMAX(tmp_h, h); |
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| 293 | } |
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| 294 | } |
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| 295 | |||
| 296 | if (w > INT_MAX || h > INT_MAX || |
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| 297 | (h * inlink->w) > INT_MAX || |
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| 298 | (w * inlink->h) > INT_MAX) |
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| 299 | av_log(ctx, AV_LOG_ERROR, "Rescaled value for width or height is too big.\n"); |
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| 300 | |||
| 301 | outlink->w = w; |
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| 302 | outlink->h = h; |
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| 303 | |||
| 304 | /* TODO: make algorithm configurable */ |
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| 305 | |||
| 306 | scale->input_is_pal = desc->flags & AV_PIX_FMT_FLAG_PAL || |
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| 307 | desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL; |
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| 308 | if (outfmt == AV_PIX_FMT_PAL8) outfmt = AV_PIX_FMT_BGR8; |
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| 309 | scale->output_is_pal = av_pix_fmt_desc_get(outfmt)->flags & AV_PIX_FMT_FLAG_PAL || |
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| 310 | av_pix_fmt_desc_get(outfmt)->flags & AV_PIX_FMT_FLAG_PSEUDOPAL; |
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| 311 | |||
| 312 | if (scale->sws) |
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| 313 | sws_freeContext(scale->sws); |
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| 314 | if (scale->isws[0]) |
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| 315 | sws_freeContext(scale->isws[0]); |
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| 316 | if (scale->isws[1]) |
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| 317 | sws_freeContext(scale->isws[1]); |
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| 318 | scale->isws[0] = scale->isws[1] = scale->sws = NULL; |
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| 319 | if (inlink->w == outlink->w && inlink->h == outlink->h && |
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| 320 | inlink->format == outlink->format) |
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| 321 | ; |
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| 322 | else { |
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| 323 | struct SwsContext **swscs[3] = {&scale->sws, &scale->isws[0], &scale->isws[1]}; |
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| 324 | int i; |
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| 325 | |||
| 326 | for (i = 0; i < 3; i++) { |
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| 327 | struct SwsContext **s = swscs[i]; |
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| 328 | *s = sws_alloc_context(); |
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| 329 | if (!*s) |
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| 330 | return AVERROR(ENOMEM); |
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| 331 | |||
| 332 | if (scale->opts) { |
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| 333 | AVDictionaryEntry *e = NULL; |
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| 334 | |||
| 335 | while ((e = av_dict_get(scale->opts, "", e, AV_DICT_IGNORE_SUFFIX))) { |
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| 336 | if ((ret = av_opt_set(*s, e->key, e->value, 0)) < 0) |
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| 337 | return ret; |
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| 338 | } |
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| 339 | } |
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| 340 | |||
| 341 | av_opt_set_int(*s, "srcw", inlink ->w, 0); |
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| 342 | av_opt_set_int(*s, "srch", inlink ->h >> !!i, 0); |
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| 343 | av_opt_set_int(*s, "src_format", inlink->format, 0); |
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| 344 | av_opt_set_int(*s, "dstw", outlink->w, 0); |
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| 345 | av_opt_set_int(*s, "dsth", outlink->h >> !!i, 0); |
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| 346 | av_opt_set_int(*s, "dst_format", outfmt, 0); |
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| 347 | av_opt_set_int(*s, "sws_flags", scale->flags, 0); |
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| 348 | |||
| 349 | av_opt_set_int(*s, "src_h_chr_pos", scale->in_h_chr_pos, 0); |
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| 350 | av_opt_set_int(*s, "src_v_chr_pos", scale->in_v_chr_pos, 0); |
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| 351 | av_opt_set_int(*s, "dst_h_chr_pos", scale->out_h_chr_pos, 0); |
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| 352 | av_opt_set_int(*s, "dst_v_chr_pos", scale->out_v_chr_pos, 0); |
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| 353 | |||
| 354 | if ((ret = sws_init_context(*s, NULL, NULL)) < 0) |
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| 355 | return ret; |
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| 356 | if (!scale->interlaced) |
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| 357 | break; |
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| 358 | } |
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| 359 | } |
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| 360 | |||
| 361 | if (inlink->sample_aspect_ratio.num){ |
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| 362 | outlink->sample_aspect_ratio = av_mul_q((AVRational){outlink->h * inlink->w, outlink->w * inlink->h}, inlink->sample_aspect_ratio); |
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| 363 | } else |
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| 364 | outlink->sample_aspect_ratio = inlink->sample_aspect_ratio; |
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| 365 | |||
| 366 | av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d fmt:%s sar:%d/%d -> w:%d h:%d fmt:%s sar:%d/%d flags:0x%0x\n", |
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| 367 | inlink ->w, inlink ->h, av_get_pix_fmt_name( inlink->format), |
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| 368 | inlink->sample_aspect_ratio.num, inlink->sample_aspect_ratio.den, |
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| 369 | outlink->w, outlink->h, av_get_pix_fmt_name(outlink->format), |
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| 370 | outlink->sample_aspect_ratio.num, outlink->sample_aspect_ratio.den, |
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| 371 | scale->flags); |
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| 372 | return 0; |
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| 373 | |||
| 374 | fail: |
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| 375 | av_log(NULL, AV_LOG_ERROR, |
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| 376 | "Error when evaluating the expression '%s'.\n" |
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| 377 | "Maybe the expression for out_w:'%s' or for out_h:'%s' is self-referencing.\n", |
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| 378 | expr, scale->w_expr, scale->h_expr); |
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| 379 | return ret; |
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| 380 | } |
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| 381 | |||
| 382 | static int scale_slice(AVFilterLink *link, AVFrame *out_buf, AVFrame *cur_pic, struct SwsContext *sws, int y, int h, int mul, int field) |
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| 383 | { |
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| 384 | ScaleContext *scale = link->dst->priv; |
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| 385 | const uint8_t *in[4]; |
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| 386 | uint8_t *out[4]; |
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| 387 | int in_stride[4],out_stride[4]; |
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| 388 | int i; |
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| 389 | |||
| 390 | for(i=0; i<4; i++){ |
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| 391 | int vsub= ((i+1)&2) ? scale->vsub : 0; |
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| 392 | in_stride[i] = cur_pic->linesize[i] * mul; |
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| 393 | out_stride[i] = out_buf->linesize[i] * mul; |
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| 394 | in[i] = cur_pic->data[i] + ((y>>vsub)+field) * cur_pic->linesize[i]; |
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| 395 | out[i] = out_buf->data[i] + field * out_buf->linesize[i]; |
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| 396 | } |
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| 397 | if(scale->input_is_pal) |
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| 398 | in[1] = cur_pic->data[1]; |
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| 399 | if(scale->output_is_pal) |
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| 400 | out[1] = out_buf->data[1]; |
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| 401 | |||
| 402 | return sws_scale(sws, in, in_stride, y/mul, h, |
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| 403 | out,out_stride); |
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| 404 | } |
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| 405 | |||
| 406 | static int filter_frame(AVFilterLink *link, AVFrame *in) |
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| 407 | { |
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| 408 | ScaleContext *scale = link->dst->priv; |
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| 409 | AVFilterLink *outlink = link->dst->outputs[0]; |
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| 410 | AVFrame *out; |
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| 411 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(link->format); |
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| 412 | char buf[32]; |
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| 413 | int in_range; |
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| 414 | |||
| 415 | if( in->width != link->w |
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| 416 | || in->height != link->h |
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| 417 | || in->format != link->format) { |
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| 418 | int ret; |
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| 419 | snprintf(buf, sizeof(buf)-1, "%d", outlink->w); |
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| 420 | av_opt_set(scale, "w", buf, 0); |
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| 421 | snprintf(buf, sizeof(buf)-1, "%d", outlink->h); |
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| 422 | av_opt_set(scale, "h", buf, 0); |
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| 423 | |||
| 424 | link->dst->inputs[0]->format = in->format; |
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| 425 | link->dst->inputs[0]->w = in->width; |
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| 426 | link->dst->inputs[0]->h = in->height; |
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| 427 | |||
| 428 | if ((ret = config_props(outlink)) < 0) |
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| 429 | return ret; |
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| 430 | } |
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| 431 | |||
| 432 | if (!scale->sws) |
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| 433 | return ff_filter_frame(outlink, in); |
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| 434 | |||
| 435 | scale->hsub = desc->log2_chroma_w; |
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| 436 | scale->vsub = desc->log2_chroma_h; |
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| 437 | |||
| 438 | out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
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| 439 | if (!out) { |
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| 440 | av_frame_free(&in); |
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| 441 | return AVERROR(ENOMEM); |
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| 442 | } |
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| 443 | |||
| 444 | av_frame_copy_props(out, in); |
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| 445 | out->width = outlink->w; |
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| 446 | out->height = outlink->h; |
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| 447 | |||
| 448 | if(scale->output_is_pal) |
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| 449 | avpriv_set_systematic_pal2((uint32_t*)out->data[1], outlink->format == AV_PIX_FMT_PAL8 ? AV_PIX_FMT_BGR8 : outlink->format); |
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| 450 | |||
| 451 | in_range = av_frame_get_color_range(in); |
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| 452 | |||
| 453 | if ( scale->in_color_matrix |
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| 454 | || scale->out_color_matrix |
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| 455 | || scale-> in_range != AVCOL_RANGE_UNSPECIFIED |
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| 456 | || in_range != AVCOL_RANGE_UNSPECIFIED |
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| 457 | || scale->out_range != AVCOL_RANGE_UNSPECIFIED) { |
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| 458 | int in_full, out_full, brightness, contrast, saturation; |
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| 459 | const int *inv_table, *table; |
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| 460 | |||
| 461 | sws_getColorspaceDetails(scale->sws, (int **)&inv_table, &in_full, |
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| 462 | (int **)&table, &out_full, |
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| 463 | &brightness, &contrast, &saturation); |
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| 464 | |||
| 465 | if (scale->in_color_matrix) |
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| 466 | inv_table = parse_yuv_type(scale->in_color_matrix, av_frame_get_colorspace(in)); |
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| 467 | if (scale->out_color_matrix) |
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| 468 | table = parse_yuv_type(scale->out_color_matrix, AVCOL_SPC_UNSPECIFIED); |
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| 469 | |||
| 470 | if (scale-> in_range != AVCOL_RANGE_UNSPECIFIED) |
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| 471 | in_full = (scale-> in_range == AVCOL_RANGE_JPEG); |
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| 472 | else if (in_range != AVCOL_RANGE_UNSPECIFIED) |
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| 473 | in_full = (in_range == AVCOL_RANGE_JPEG); |
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| 474 | if (scale->out_range != AVCOL_RANGE_UNSPECIFIED) |
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| 475 | out_full = (scale->out_range == AVCOL_RANGE_JPEG); |
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| 476 | |||
| 477 | sws_setColorspaceDetails(scale->sws, inv_table, in_full, |
||
| 478 | table, out_full, |
||
| 479 | brightness, contrast, saturation); |
||
| 480 | if (scale->isws[0]) |
||
| 481 | sws_setColorspaceDetails(scale->isws[0], inv_table, in_full, |
||
| 482 | table, out_full, |
||
| 483 | brightness, contrast, saturation); |
||
| 484 | if (scale->isws[1]) |
||
| 485 | sws_setColorspaceDetails(scale->isws[1], inv_table, in_full, |
||
| 486 | table, out_full, |
||
| 487 | brightness, contrast, saturation); |
||
| 488 | } |
||
| 489 | |||
| 490 | av_reduce(&out->sample_aspect_ratio.num, &out->sample_aspect_ratio.den, |
||
| 491 | (int64_t)in->sample_aspect_ratio.num * outlink->h * link->w, |
||
| 492 | (int64_t)in->sample_aspect_ratio.den * outlink->w * link->h, |
||
| 493 | INT_MAX); |
||
| 494 | |||
| 495 | if(scale->interlaced>0 || (scale->interlaced<0 && in->interlaced_frame)){ |
||
| 496 | scale_slice(link, out, in, scale->isws[0], 0, (link->h+1)/2, 2, 0); |
||
| 497 | scale_slice(link, out, in, scale->isws[1], 0, link->h /2, 2, 1); |
||
| 498 | }else{ |
||
| 499 | scale_slice(link, out, in, scale->sws, 0, link->h, 1, 0); |
||
| 500 | } |
||
| 501 | |||
| 502 | av_frame_free(&in); |
||
| 503 | return ff_filter_frame(outlink, out); |
||
| 504 | } |
||
| 505 | |||
| 506 | static const AVClass *child_class_next(const AVClass *prev) |
||
| 507 | { |
||
| 508 | return prev ? NULL : sws_get_class(); |
||
| 509 | } |
||
| 510 | |||
| 511 | #define OFFSET(x) offsetof(ScaleContext, x) |
||
| 512 | #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM |
||
| 513 | |||
| 514 | static const AVOption scale_options[] = { |
||
| 515 | { "w", "Output video width", OFFSET(w_expr), AV_OPT_TYPE_STRING, .flags = FLAGS }, |
||
| 516 | { "width", "Output video width", OFFSET(w_expr), AV_OPT_TYPE_STRING, .flags = FLAGS }, |
||
| 517 | { "h", "Output video height", OFFSET(h_expr), AV_OPT_TYPE_STRING, .flags = FLAGS }, |
||
| 518 | { "height","Output video height", OFFSET(h_expr), AV_OPT_TYPE_STRING, .flags = FLAGS }, |
||
| 519 | { "flags", "Flags to pass to libswscale", OFFSET(flags_str), AV_OPT_TYPE_STRING, { .str = "bilinear" }, .flags = FLAGS }, |
||
| 520 | { "interl", "set interlacing", OFFSET(interlaced), AV_OPT_TYPE_INT, {.i64 = 0 }, -1, 1, FLAGS }, |
||
| 521 | { "size", "set video size", OFFSET(size_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, FLAGS }, |
||
| 522 | { "s", "set video size", OFFSET(size_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, FLAGS }, |
||
| 523 | { "in_color_matrix", "set input YCbCr type", OFFSET(in_color_matrix), AV_OPT_TYPE_STRING, { .str = "auto" }, .flags = FLAGS }, |
||
| 524 | { "out_color_matrix", "set output YCbCr type", OFFSET(out_color_matrix), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = FLAGS }, |
||
| 525 | { "in_range", "set input color range", OFFSET( in_range), AV_OPT_TYPE_INT, {.i64 = AVCOL_RANGE_UNSPECIFIED }, 0, 2, FLAGS, "range" }, |
||
| 526 | { "out_range", "set output color range", OFFSET(out_range), AV_OPT_TYPE_INT, {.i64 = AVCOL_RANGE_UNSPECIFIED }, 0, 2, FLAGS, "range" }, |
||
| 527 | { "auto", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = AVCOL_RANGE_UNSPECIFIED }, 0, 0, FLAGS, "range" }, |
||
| 528 | { "full", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = AVCOL_RANGE_JPEG}, 0, 0, FLAGS, "range" }, |
||
| 529 | { "jpeg", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = AVCOL_RANGE_JPEG}, 0, 0, FLAGS, "range" }, |
||
| 530 | { "mpeg", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = AVCOL_RANGE_MPEG}, 0, 0, FLAGS, "range" }, |
||
| 531 | { "tv", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = AVCOL_RANGE_MPEG}, 0, 0, FLAGS, "range" }, |
||
| 532 | { "pc", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = AVCOL_RANGE_JPEG}, 0, 0, FLAGS, "range" }, |
||
| 533 | { "in_v_chr_pos", "input vertical chroma position in luma grid/256" , OFFSET(in_v_chr_pos), AV_OPT_TYPE_INT, { .i64 = -1}, -1, 512, FLAGS }, |
||
| 534 | { "in_h_chr_pos", "input horizontal chroma position in luma grid/256", OFFSET(in_h_chr_pos), AV_OPT_TYPE_INT, { .i64 = -1}, -1, 512, FLAGS }, |
||
| 535 | { "out_v_chr_pos", "output vertical chroma position in luma grid/256" , OFFSET(out_v_chr_pos), AV_OPT_TYPE_INT, { .i64 = -1}, -1, 512, FLAGS }, |
||
| 536 | { "out_h_chr_pos", "output horizontal chroma position in luma grid/256", OFFSET(out_h_chr_pos), AV_OPT_TYPE_INT, { .i64 = -1}, -1, 512, FLAGS }, |
||
| 537 | { "force_original_aspect_ratio", "decrease or increase w/h if necessary to keep the original AR", OFFSET(force_original_aspect_ratio), AV_OPT_TYPE_INT, { .i64 = 0}, 0, 2, FLAGS, "force_oar" }, |
||
| 538 | { "disable", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 0 }, 0, 0, FLAGS, "force_oar" }, |
||
| 539 | { "decrease", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 1 }, 0, 0, FLAGS, "force_oar" }, |
||
| 540 | { "increase", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 2 }, 0, 0, FLAGS, "force_oar" }, |
||
| 541 | { NULL } |
||
| 542 | }; |
||
| 543 | |||
| 544 | static const AVClass scale_class = { |
||
| 545 | .class_name = "scale", |
||
| 546 | .item_name = av_default_item_name, |
||
| 547 | .option = scale_options, |
||
| 548 | .version = LIBAVUTIL_VERSION_INT, |
||
| 549 | .child_class_next = child_class_next, |
||
| 550 | }; |
||
| 551 | |||
| 552 | static const AVFilterPad avfilter_vf_scale_inputs[] = { |
||
| 553 | { |
||
| 554 | .name = "default", |
||
| 555 | .type = AVMEDIA_TYPE_VIDEO, |
||
| 556 | .filter_frame = filter_frame, |
||
| 557 | }, |
||
| 558 | { NULL } |
||
| 559 | }; |
||
| 560 | |||
| 561 | static const AVFilterPad avfilter_vf_scale_outputs[] = { |
||
| 562 | { |
||
| 563 | .name = "default", |
||
| 564 | .type = AVMEDIA_TYPE_VIDEO, |
||
| 565 | .config_props = config_props, |
||
| 566 | }, |
||
| 567 | { NULL } |
||
| 568 | }; |
||
| 569 | |||
| 570 | AVFilter avfilter_vf_scale = { |
||
| 571 | .name = "scale", |
||
| 572 | .description = NULL_IF_CONFIG_SMALL("Scale the input video size and/or convert the image format."), |
||
| 573 | .init_dict = init_dict, |
||
| 574 | .uninit = uninit, |
||
| 575 | .query_formats = query_formats, |
||
| 576 | .priv_size = sizeof(ScaleContext), |
||
| 577 | .priv_class = &scale_class, |
||
| 578 | .inputs = avfilter_vf_scale_inputs, |
||
| 579 | .outputs = avfilter_vf_scale_outputs, |
||
| 580 | }; |