}
}
+static void ttml_get_origin(ASSScriptInfo script_info, ASSStyle style,
+ int *origin_left, int *origin_top)
+{
+ *origin_left = av_rescale(style.margin_l, 100, script_info.play_res_x);
+ *origin_top =
+ av_rescale((style.alignment >= 7) ? style.margin_v : 0,
+ 100, script_info.play_res_y);
+}
+
+static void ttml_get_extent(ASSScriptInfo script_info, ASSStyle style,
+ int *width, int *height)
+{
+ *width = av_rescale(script_info.play_res_x - style.margin_r,
+ 100, script_info.play_res_x);
+ *height = av_rescale((style.alignment <= 3) ?
+ script_info.play_res_y - style.margin_v :
+ script_info.play_res_y,
+ 100, script_info.play_res_y);
+}
+
static int ttml_write_region(AVCodecContext *avctx, AVBPrint *buf,
- ASSStyle style)
+ ASSScriptInfo script_info, ASSStyle style)
{
const char *display_alignment = NULL;
const char *text_alignment = NULL;
+ int origin_left = 0;
+ int origin_top = 0;
+ int width = 0;
+ int height = 0;
if (!style.name) {
av_log(avctx, AV_LOG_ERROR, "Subtitle style name not set!\n");
return AVERROR_INVALIDDATA;
}
+ if (style.margin_l < 0 || style.margin_r < 0 || style.margin_v < 0) {
+ av_log(avctx, AV_LOG_ERROR,
+ "One or more negative margin values in subtitle style: "
+ "left: %d, right: %d, vertical: %d!\n",
+ style.margin_l, style.margin_r, style.margin_v);
+ return AVERROR_INVALIDDATA;
+ }
+
display_alignment = ttml_get_display_alignment(style.alignment);
text_alignment = ttml_get_text_alignment(style.alignment);
if (!display_alignment || !text_alignment) {
return AVERROR_INVALIDDATA;
}
+ ttml_get_origin(script_info, style, &origin_left, &origin_top);
+ ttml_get_extent(script_info, style, &width, &height);
+
av_bprintf(buf, " <region xml:id=\"");
av_bprint_escape(buf, style.name, NULL, AV_ESCAPE_MODE_XML,
AV_ESCAPE_FLAG_XML_DOUBLE_QUOTES);
av_bprintf(buf, "\"\n");
+ av_bprintf(buf, " tts:origin=\"%d%% %d%%\"\n",
+ origin_left, origin_top);
+ av_bprintf(buf, " tts:extent=\"%d%% %d%%\"\n",
+ width, height);
+
av_bprintf(buf, " tts:displayAlign=\"");
av_bprint_escape(buf, display_alignment, NULL, AV_ESCAPE_MODE_XML,
AV_ESCAPE_FLAG_XML_DOUBLE_QUOTES);
av_bprintf(&s->buffer, " <layout>\n");
for (int i = 0; i < ass->styles_count; i++) {
- int ret = ttml_write_region(avctx, &s->buffer, ass->styles[i]);
+ int ret = ttml_write_region(avctx, &s->buffer, script_info,
+ ass->styles[i]);
if (ret < 0)
return ret;
}
projects / ffmpeg / commitdiff