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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6147 | serge | 1 | /* |
| 2 | * Copyright (c) 2012 Paul B Mahol |
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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 | #include |
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| 22 | #include "libavutil/opt.h" |
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| 23 | #include "libavutil/pixdesc.h" |
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| 24 | #include "avdevice.h" |
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| 25 | |||
| 26 | typedef struct CACAContext { |
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| 27 | AVClass *class; |
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| 28 | AVFormatContext *ctx; |
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| 29 | char *window_title; |
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| 30 | int window_width, window_height; |
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| 31 | |||
| 32 | caca_canvas_t *canvas; |
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| 33 | caca_display_t *display; |
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| 34 | caca_dither_t *dither; |
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| 35 | |||
| 36 | char *algorithm, *antialias; |
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| 37 | char *charset, *color; |
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| 38 | char *driver; |
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| 39 | |||
| 40 | char *list_dither; |
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| 41 | int list_drivers; |
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| 42 | } CACAContext; |
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| 43 | |||
| 44 | static int caca_write_trailer(AVFormatContext *s) |
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| 45 | { |
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| 46 | CACAContext *c = s->priv_data; |
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| 47 | |||
| 48 | av_freep(&c->window_title); |
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| 49 | |||
| 50 | if (c->display) { |
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| 51 | caca_free_display(c->display); |
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| 52 | c->display = NULL; |
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| 53 | } |
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| 54 | if (c->dither) { |
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| 55 | caca_free_dither(c->dither); |
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| 56 | c->dither = NULL; |
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| 57 | } |
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| 58 | if (c->canvas) { |
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| 59 | caca_free_canvas(c->canvas); |
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| 60 | c->canvas = NULL; |
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| 61 | } |
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| 62 | return 0; |
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| 63 | } |
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| 64 | |||
| 65 | static void list_drivers(CACAContext *c) |
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| 66 | { |
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| 67 | const char *const *drivers = caca_get_display_driver_list(); |
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| 68 | int i; |
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| 69 | |||
| 70 | av_log(c->ctx, AV_LOG_INFO, "Available drivers:\n"); |
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| 71 | for (i = 0; drivers[i]; i += 2) |
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| 72 | av_log(c->ctx, AV_LOG_INFO, "%s : %s\n", drivers[i], drivers[i + 1]); |
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| 73 | } |
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| 74 | |||
| 75 | #define DEFINE_LIST_DITHER(thing, thing_str) \ |
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| 76 | static void list_dither_## thing(CACAContext *c) \ |
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| 77 | { \ |
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| 78 | const char *const *thing = caca_get_dither_## thing ##_list(c->dither); \ |
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| 79 | int i; \ |
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| 80 | \ |
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| 81 | av_log(c->ctx, AV_LOG_INFO, "Available %s:\n", thing_str); \ |
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| 82 | for (i = 0; thing[i]; i += 2) \ |
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| 83 | av_log(c->ctx, AV_LOG_INFO, "%s : %s\n", thing[i], thing[i + 1]); \ |
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| 84 | } |
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| 85 | |||
| 86 | DEFINE_LIST_DITHER(color, "colors"); |
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| 87 | DEFINE_LIST_DITHER(charset, "charsets"); |
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| 88 | DEFINE_LIST_DITHER(algorithm, "algorithms"); |
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| 89 | DEFINE_LIST_DITHER(antialias, "antialias"); |
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| 90 | |||
| 91 | static int caca_write_header(AVFormatContext *s) |
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| 92 | { |
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| 93 | CACAContext *c = s->priv_data; |
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| 94 | AVStream *st = s->streams[0]; |
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| 95 | AVCodecContext *encctx = st->codec; |
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| 96 | int ret, bpp; |
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| 97 | |||
| 98 | c->ctx = s; |
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| 99 | if (c->list_drivers) { |
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| 100 | list_drivers(c); |
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| 101 | return AVERROR_EXIT; |
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| 102 | } |
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| 103 | if (c->list_dither) { |
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| 104 | if (!strcmp(c->list_dither, "colors")) { |
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| 105 | list_dither_color(c); |
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| 106 | } else if (!strcmp(c->list_dither, "charsets")) { |
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| 107 | list_dither_charset(c); |
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| 108 | } else if (!strcmp(c->list_dither, "algorithms")) { |
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| 109 | list_dither_algorithm(c); |
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| 110 | } else if (!strcmp(c->list_dither, "antialiases")) { |
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| 111 | list_dither_antialias(c); |
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| 112 | } else { |
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| 113 | av_log(s, AV_LOG_ERROR, |
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| 114 | "Invalid argument '%s', for 'list_dither' option\n" |
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| 115 | "Argument must be one of 'algorithms, 'antialiases', 'charsets', 'colors'\n", |
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| 116 | c->list_dither); |
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| 117 | return AVERROR(EINVAL); |
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| 118 | } |
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| 119 | return AVERROR_EXIT; |
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| 120 | } |
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| 121 | |||
| 122 | if ( s->nb_streams > 1 |
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| 123 | || encctx->codec_type != AVMEDIA_TYPE_VIDEO |
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| 124 | || encctx->codec_id != AV_CODEC_ID_RAWVIDEO) { |
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| 125 | av_log(s, AV_LOG_ERROR, "Only supports one rawvideo stream\n"); |
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| 126 | return AVERROR(EINVAL); |
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| 127 | } |
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| 128 | |||
| 129 | if (encctx->pix_fmt != AV_PIX_FMT_RGB24) { |
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| 130 | av_log(s, AV_LOG_ERROR, |
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| 131 | "Unsupported pixel format '%s', choose rgb24\n", |
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| 132 | av_get_pix_fmt_name(encctx->pix_fmt)); |
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| 133 | return AVERROR(EINVAL); |
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| 134 | } |
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| 135 | |||
| 136 | c->canvas = caca_create_canvas(c->window_width, c->window_height); |
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| 137 | if (!c->canvas) { |
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| 138 | ret = AVERROR(errno); |
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| 139 | av_log(s, AV_LOG_ERROR, "Failed to create canvas\n"); |
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| 140 | goto fail; |
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| 141 | } |
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| 142 | |||
| 143 | bpp = av_get_bits_per_pixel(av_pix_fmt_desc_get(encctx->pix_fmt)); |
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| 144 | c->dither = caca_create_dither(bpp, encctx->width, encctx->height, |
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| 145 | bpp / 8 * encctx->width, |
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| 146 | 0x0000ff, 0x00ff00, 0xff0000, 0); |
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| 147 | if (!c->dither) { |
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| 148 | ret = AVERROR(errno); |
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| 149 | av_log(s, AV_LOG_ERROR, "Failed to create dither\n"); |
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| 150 | goto fail; |
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| 151 | } |
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| 152 | |||
| 153 | #define CHECK_DITHER_OPT(opt) \ |
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| 154 | if (caca_set_dither_##opt(c->dither, c->opt) < 0) { \ |
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| 155 | ret = AVERROR(errno); \ |
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| 156 | av_log(s, AV_LOG_ERROR, "Failed to set value '%s' for option '%s'\n", \ |
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| 157 | c->opt, #opt); \ |
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| 158 | goto fail; \ |
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| 159 | } |
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| 160 | CHECK_DITHER_OPT(algorithm); |
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| 161 | CHECK_DITHER_OPT(antialias); |
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| 162 | CHECK_DITHER_OPT(charset); |
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| 163 | CHECK_DITHER_OPT(color); |
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| 164 | |||
| 165 | c->display = caca_create_display_with_driver(c->canvas, c->driver); |
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| 166 | if (!c->display) { |
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| 167 | ret = AVERROR(errno); |
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| 168 | av_log(s, AV_LOG_ERROR, "Failed to create display\n"); |
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| 169 | list_drivers(c); |
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| 170 | goto fail; |
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| 171 | } |
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| 172 | |||
| 173 | if (!c->window_width || !c->window_height) { |
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| 174 | c->window_width = caca_get_canvas_width(c->canvas); |
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| 175 | c->window_height = caca_get_canvas_height(c->canvas); |
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| 176 | } |
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| 177 | |||
| 178 | if (!c->window_title) |
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| 179 | c->window_title = av_strdup(s->filename); |
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| 180 | caca_set_display_title(c->display, c->window_title); |
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| 181 | caca_set_display_time(c->display, av_rescale_q(1, st->codec->time_base, AV_TIME_BASE_Q)); |
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| 182 | |||
| 183 | return 0; |
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| 184 | |||
| 185 | fail: |
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| 186 | caca_write_trailer(s); |
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| 187 | return ret; |
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| 188 | } |
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| 189 | |||
| 190 | static int caca_write_packet(AVFormatContext *s, AVPacket *pkt) |
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| 191 | { |
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| 192 | CACAContext *c = s->priv_data; |
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| 193 | |||
| 194 | caca_dither_bitmap(c->canvas, 0, 0, c->window_width, c->window_height, c->dither, pkt->data); |
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| 195 | caca_refresh_display(c->display); |
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| 196 | |||
| 197 | return 0; |
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| 198 | } |
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| 199 | |||
| 200 | #define OFFSET(x) offsetof(CACAContext,x) |
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| 201 | #define ENC AV_OPT_FLAG_ENCODING_PARAM |
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| 202 | |||
| 203 | static const AVOption options[] = { |
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| 204 | { "window_size", "set window forced size", OFFSET(window_width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL }, 0, 0, ENC}, |
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| 205 | { "window_title", "set window title", OFFSET(window_title), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, ENC }, |
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| 206 | { "driver", "set display driver", OFFSET(driver), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, ENC }, |
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| 207 | { "algorithm", "set dithering algorithm", OFFSET(algorithm), AV_OPT_TYPE_STRING, {.str = "default" }, 0, 0, ENC }, |
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| 208 | { "antialias", "set antialias method", OFFSET(antialias), AV_OPT_TYPE_STRING, {.str = "default" }, 0, 0, ENC }, |
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| 209 | { "charset", "set charset used to render output", OFFSET(charset), AV_OPT_TYPE_STRING, {.str = "default" }, 0, 0, ENC }, |
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| 210 | { "color", "set color used to render output", OFFSET(color), AV_OPT_TYPE_STRING, {.str = "default" }, 0, 0, ENC }, |
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| 211 | { "list_drivers", "list available drivers", OFFSET(list_drivers), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, ENC, "list_drivers" }, |
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| 212 | { "true", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 1}, 0, 0, ENC, "list_drivers" }, |
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| 213 | { "false", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 0}, 0, 0, ENC, "list_drivers" }, |
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| 214 | { "list_dither", "list available dither options", OFFSET(list_dither), AV_OPT_TYPE_STRING, {.dbl=0}, 0, 1, ENC, "list_dither" }, |
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| 215 | { "algorithms", NULL, 0, AV_OPT_TYPE_CONST, {.str = "algorithms"}, 0, 0, ENC, "list_dither" }, |
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| 216 | { "antialiases", NULL, 0, AV_OPT_TYPE_CONST, {.str = "antialiases"},0, 0, ENC, "list_dither" }, |
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| 217 | { "charsets", NULL, 0, AV_OPT_TYPE_CONST, {.str = "charsets"}, 0, 0, ENC, "list_dither" }, |
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| 218 | { "colors", NULL, 0, AV_OPT_TYPE_CONST, {.str = "colors"}, 0, 0, ENC, "list_dither" }, |
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| 219 | { NULL }, |
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| 220 | }; |
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| 221 | |||
| 222 | static const AVClass caca_class = { |
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| 223 | .class_name = "caca_outdev", |
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| 224 | .item_name = av_default_item_name, |
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| 225 | .option = options, |
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| 226 | .version = LIBAVUTIL_VERSION_INT, |
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| 227 | .category = AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT, |
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| 228 | }; |
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| 229 | |||
| 230 | AVOutputFormat ff_caca_muxer = { |
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| 231 | .name = "caca", |
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| 232 | .long_name = NULL_IF_CONFIG_SMALL("caca (color ASCII art) output device"), |
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| 233 | .priv_data_size = sizeof(CACAContext), |
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| 234 | .audio_codec = AV_CODEC_ID_NONE, |
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| 235 | .video_codec = AV_CODEC_ID_RAWVIDEO, |
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| 236 | .write_header = caca_write_header, |
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| 237 | .write_packet = caca_write_packet, |
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| 238 | .write_trailer = caca_write_trailer, |
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| 239 | .flags = AVFMT_NOFILE, |
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| 240 | .priv_class = &caca_class, |
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| 241 | }; |