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00022 #include "avcodec.h"
00023 #include "ass.h"
00024 #include "libavutil/avstring.h"
00025
00041 static int ff_ass_subtitle_header(AVCodecContext *avctx,
00042 const char *font, int font_size,
00043 int color, int back_color,
00044 int bold, int italic, int underline,
00045 int alignment)
00046 {
00047 char header[512];
00048
00049 snprintf(header, sizeof(header),
00050 "[Script Info]\r\n"
00051 "ScriptType: v4.00+\r\n"
00052 "\r\n"
00053 "[V4+ Styles]\r\n"
00054 "Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, AlphaLevel, Encoding\r\n"
00055 "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"
00056 "\r\n"
00057 "[Events]\r\n"
00058 "Format: Layer, Start, End, Text\r\n",
00059 font, font_size, color, color, back_color, back_color,
00060 -bold, -italic, -underline, alignment);
00061
00062 avctx->subtitle_header = av_strdup(header);
00063 if (!avctx->subtitle_header)
00064 return AVERROR(ENOMEM);
00065 avctx->subtitle_header_size = strlen(avctx->subtitle_header);
00066 return 0;
00067 }
00068
00069 int ff_ass_subtitle_header_default(AVCodecContext *avctx)
00070 {
00071 return ff_ass_subtitle_header(avctx, ASS_DEFAULT_FONT,
00072 ASS_DEFAULT_FONT_SIZE,
00073 ASS_DEFAULT_COLOR,
00074 ASS_DEFAULT_BACK_COLOR,
00075 ASS_DEFAULT_BOLD,
00076 ASS_DEFAULT_ITALIC,
00077 ASS_DEFAULT_UNDERLINE,
00078 ASS_DEFAULT_ALIGNMENT);
00079 }
00080
00081 void ff_ass_init(AVSubtitle *sub)
00082 {
00083 memset(sub, 0, sizeof(*sub));
00084 }
00085
00086 static int ts_to_string(char *str, int strlen, int ts)
00087 {
00088 int h, m, s;
00089 h = ts/360000; ts -= 360000*h;
00090 m = ts/ 6000; ts -= 6000*m;
00091 s = ts/ 100; ts -= 100*s;
00092 return snprintf(str, strlen, "%d:%02d:%02d.%02d", h, m, s, ts);
00093 }
00094
00095 int ff_ass_add_rect(AVSubtitle *sub, const char *dialog,
00096 int ts_start, int ts_end, int raw)
00097 {
00098 int len = 0, dlen, duration = ts_end - ts_start;
00099 char s_start[16], s_end[16], header[48] = {0};
00100 AVSubtitleRect **rects;
00101
00102 if (!raw) {
00103 ts_to_string(s_start, sizeof(s_start), ts_start);
00104 ts_to_string(s_end, sizeof(s_end), ts_end );
00105 len = snprintf(header, sizeof(header), "Dialogue: 0,%s,%s,",
00106 s_start, s_end);
00107 }
00108
00109 dlen = strcspn(dialog, "\n");
00110 dlen += dialog[dlen] == '\n';
00111
00112 rects = av_realloc(sub->rects, (sub->num_rects+1) * sizeof(*sub->rects));
00113 if (!rects)
00114 return AVERROR(ENOMEM);
00115 sub->rects = rects;
00116 sub->end_display_time = FFMAX(sub->end_display_time, 10 * duration);
00117 rects[sub->num_rects] = av_mallocz(sizeof(*rects[0]));
00118 rects[sub->num_rects]->type = SUBTITLE_ASS;
00119 rects[sub->num_rects]->ass = av_malloc(len + dlen + 1);
00120 strcpy (rects[sub->num_rects]->ass , header);
00121 av_strlcpy(rects[sub->num_rects]->ass + len, dialog, dlen + 1);
00122 sub->num_rects++;
00123 return dlen;
00124 }