| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * This file is part of FFmpeg. | ||
| 3 | * | ||
| 4 | * FFmpeg is free software; you can redistribute it and/or | ||
| 5 | * modify it under the terms of the GNU Lesser General Public | ||
| 6 | * License as published by the Free Software Foundation; either | ||
| 7 | * version 2.1 of the License, or (at your option) any later version. | ||
| 8 | * | ||
| 9 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 12 | * Lesser General Public License for more details. | ||
| 13 | * | ||
| 14 | * You should have received a copy of the GNU Lesser General Public | ||
| 15 | * License along with FFmpeg; if not, write to the Free Software | ||
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 17 | */ | ||
| 18 | |||
| 19 | /** | ||
| 20 | * @file | ||
| 21 | * Display frame palette (AV_PIX_FMT_PAL8) | ||
| 22 | */ | ||
| 23 | |||
| 24 | #include "libavutil/opt.h" | ||
| 25 | #include "avfilter.h" | ||
| 26 | #include "filters.h" | ||
| 27 | #include "formats.h" | ||
| 28 | #include "video.h" | ||
| 29 | |||
| 30 | typedef struct ShowPaletteContext { | ||
| 31 | const AVClass *class; | ||
| 32 | int size; | ||
| 33 | } ShowPaletteContext; | ||
| 34 | |||
| 35 | #define OFFSET(x) offsetof(ShowPaletteContext, x) | ||
| 36 | #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM | ||
| 37 | static const AVOption showpalette_options[] = { | ||
| 38 | { "s", "set pixel box size", OFFSET(size), AV_OPT_TYPE_INT, {.i64=30}, 1, 100, FLAGS }, | ||
| 39 | { NULL } | ||
| 40 | }; | ||
| 41 | |||
| 42 | AVFILTER_DEFINE_CLASS(showpalette); | ||
| 43 | |||
| 44 | 1 | static int query_formats(const AVFilterContext *ctx, | |
| 45 | AVFilterFormatsConfig **cfg_in, | ||
| 46 | AVFilterFormatsConfig **cfg_out) | ||
| 47 | { | ||
| 48 | static const enum AVPixelFormat in_fmts[] = {AV_PIX_FMT_PAL8, AV_PIX_FMT_NONE}; | ||
| 49 | static const enum AVPixelFormat out_fmts[] = {AV_PIX_FMT_RGB32, AV_PIX_FMT_NONE}; | ||
| 50 | 1 | int ret = ff_formats_ref(ff_make_format_list(in_fmts), | |
| 51 | 1 | &cfg_in[0]->formats); | |
| 52 |
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1 | if (ret < 0) |
| 53 | ✗ | return ret; | |
| 54 | |||
| 55 | 1 | return ff_formats_ref(ff_make_format_list(out_fmts), | |
| 56 | 1 | &cfg_out[0]->formats); | |
| 57 | } | ||
| 58 | |||
| 59 | 1 | static int config_output(AVFilterLink *outlink) | |
| 60 | { | ||
| 61 | 1 | AVFilterContext *ctx = outlink->src; | |
| 62 | 1 | const ShowPaletteContext *s = ctx->priv; | |
| 63 | 1 | outlink->w = outlink->h = 16 * s->size; | |
| 64 | 1 | return 0; | |
| 65 | } | ||
| 66 | |||
| 67 | 315 | static void disp_palette(AVFrame *out, const AVFrame *in, int size) | |
| 68 | { | ||
| 69 | int x, y, i, j; | ||
| 70 | 315 | uint32_t *dst = (uint32_t *)out->data[0]; | |
| 71 | 315 | const int dst_linesize = out->linesize[0] >> 2; | |
| 72 | 315 | const uint32_t *pal = (uint32_t *)in->data[1]; | |
| 73 | |||
| 74 |
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5355 | for (y = 0; y < 16; y++) |
| 75 |
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85680 | for (x = 0; x < 16; x++) |
| 76 |
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322560 | for (j = 0; j < size; j++) |
| 77 |
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967680 | for (i = 0; i < size; i++) |
| 78 | 725760 | dst[(y*dst_linesize + x) * size + j*dst_linesize + i] = pal[y*16 + x]; | |
| 79 | 315 | } | |
| 80 | |||
| 81 | 315 | static int filter_frame(AVFilterLink *inlink, AVFrame *in) | |
| 82 | { | ||
| 83 | AVFrame *out; | ||
| 84 | 315 | AVFilterContext *ctx = inlink->dst; | |
| 85 | 315 | const ShowPaletteContext *s = ctx->priv; | |
| 86 | 315 | AVFilterLink *outlink = ctx->outputs[0]; | |
| 87 | |||
| 88 | 315 | out = ff_get_video_buffer(outlink, outlink->w, outlink->h); | |
| 89 |
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315 | if (!out) { |
| 90 | ✗ | av_frame_free(&in); | |
| 91 | ✗ | return AVERROR(ENOMEM); | |
| 92 | } | ||
| 93 | 315 | av_frame_copy_props(out, in); | |
| 94 | 315 | disp_palette(out, in, s->size); | |
| 95 | 315 | av_frame_free(&in); | |
| 96 | 315 | return ff_filter_frame(outlink, out); | |
| 97 | } | ||
| 98 | |||
| 99 | static const AVFilterPad showpalette_inputs[] = { | ||
| 100 | { | ||
| 101 | .name = "default", | ||
| 102 | .type = AVMEDIA_TYPE_VIDEO, | ||
| 103 | .filter_frame = filter_frame, | ||
| 104 | }, | ||
| 105 | }; | ||
| 106 | |||
| 107 | static const AVFilterPad showpalette_outputs[] = { | ||
| 108 | { | ||
| 109 | .name = "default", | ||
| 110 | .type = AVMEDIA_TYPE_VIDEO, | ||
| 111 | .config_props = config_output, | ||
| 112 | }, | ||
| 113 | }; | ||
| 114 | |||
| 115 | const AVFilter ff_vf_showpalette = { | ||
| 116 | .name = "showpalette", | ||
| 117 | .description = NULL_IF_CONFIG_SMALL("Display frame palette."), | ||
| 118 | .priv_size = sizeof(ShowPaletteContext), | ||
| 119 | FILTER_INPUTS(showpalette_inputs), | ||
| 120 | FILTER_OUTPUTS(showpalette_outputs), | ||
| 121 | FILTER_QUERY_FUNC2(query_formats), | ||
| 122 | .priv_class = &showpalette_class, | ||
| 123 | }; | ||
| 124 |