| /* |
| * SSA/ASS common funtions |
| * Copyright (c) 2010 Aurelien Jacobs <aurel@gnuage.org> |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "avcodec.h" |
| #include "ass.h" |
| #include "libavutil/avstring.h" |
| |
| int ff_ass_subtitle_header(AVCodecContext *avctx, |
| const char *font, int font_size, |
| int color, int back_color, |
| int bold, int italic, int underline, |
| int alignment) |
| { |
| char header[512]; |
| |
| snprintf(header, sizeof(header), |
| "[Script Info]\r\n" |
| "ScriptType: v4.00+\r\n" |
| "\r\n" |
| "[V4+ Styles]\r\n" |
| "Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, AlphaLevel, Encoding\r\n" |
| "Style: Default,%s,%d,&H%x,&H%x,&H%x,&H%x,%d,%d,%d,1,1,0,%d,10,10,10,0,0\r\n" |
| "\r\n" |
| "[Events]\r\n" |
| "Format: Layer, Start, End, Text\r\n", |
| font, font_size, color, color, back_color, back_color, |
| -bold, -italic, -underline, alignment); |
| |
| avctx->subtitle_header = av_strdup(header); |
| if (!avctx->subtitle_header) |
| return AVERROR(ENOMEM); |
| avctx->subtitle_header_size = strlen(avctx->subtitle_header); |
| return 0; |
| } |
| |
| int ff_ass_subtitle_header_default(AVCodecContext *avctx) |
| { |
| return ff_ass_subtitle_header(avctx, ASS_DEFAULT_FONT, |
| ASS_DEFAULT_FONT_SIZE, |
| ASS_DEFAULT_COLOR, |
| ASS_DEFAULT_BACK_COLOR, |
| ASS_DEFAULT_BOLD, |
| ASS_DEFAULT_ITALIC, |
| ASS_DEFAULT_UNDERLINE, |
| ASS_DEFAULT_ALIGNMENT); |
| } |
| |
| static int ts_to_string(char *str, int strlen, int ts) |
| { |
| int h, m, s; |
| h = ts/360000; ts -= 360000*h; |
| m = ts/ 6000; ts -= 6000*m; |
| s = ts/ 100; ts -= 100*s; |
| return snprintf(str, strlen, "%d:%02d:%02d.%02d", h, m, s, ts); |
| } |
| |
| int ff_ass_add_rect(AVSubtitle *sub, const char *dialog, |
| int ts_start, int ts_end, int raw) |
| { |
| int len = 0, dlen, duration = ts_end - ts_start; |
| char s_start[16], s_end[16], header[48] = {0}; |
| AVSubtitleRect **rects; |
| |
| if (!raw) { |
| ts_to_string(s_start, sizeof(s_start), ts_start); |
| ts_to_string(s_end, sizeof(s_end), ts_end ); |
| len = snprintf(header, sizeof(header), "Dialogue: 0,%s,%s,", |
| s_start, s_end); |
| } |
| |
| dlen = strcspn(dialog, "\n"); |
| dlen += dialog[dlen] == '\n'; |
| |
| rects = av_realloc(sub->rects, (sub->num_rects+1) * sizeof(*sub->rects)); |
| if (!rects) |
| return AVERROR(ENOMEM); |
| sub->rects = rects; |
| sub->end_display_time = FFMAX(sub->end_display_time, 10 * duration); |
| rects[sub->num_rects] = av_mallocz(sizeof(*rects[0])); |
| rects[sub->num_rects]->type = SUBTITLE_ASS; |
| rects[sub->num_rects]->ass = av_malloc(len + dlen + 1); |
| strcpy (rects[sub->num_rects]->ass , header); |
| av_strlcpy(rects[sub->num_rects]->ass + len, dialog, dlen + 1); |
| sub->num_rects++; |
| return dlen; |
| } |