| 77 | }; |
| 78 | |
| 79 | static int ttml_encode_frame(AVCodecContext *avctx, uint8_t *buf, |
| 80 | int bufsize, const AVSubtitle *sub) |
| 81 | { |
| 82 | TTMLContext *s = avctx->priv_data; |
| 83 | ASSDialog *dialog; |
| 84 | int i; |
| 85 | |
| 86 | av_bprint_init_for_buffer(&s->buffer, buf, bufsize); |
| 87 | |
| 88 | for (i=0; i<sub->num_rects; i++) { |
| 89 | const char *ass = sub->rects[i]->ass; |
| 90 | int ret; |
| 91 | |
| 92 | if (sub->rects[i]->type != SUBTITLE_ASS) { |
| 93 | av_log(avctx, AV_LOG_ERROR, "Only SUBTITLE_ASS type supported.\n"); |
| 94 | return AVERROR(EINVAL); |
| 95 | } |
| 96 | |
| 97 | dialog = ff_ass_split_dialog(s->ass_ctx, ass); |
| 98 | if (!dialog) |
| 99 | return AVERROR(ENOMEM); |
| 100 | |
| 101 | if (dialog->style) { |
| 102 | av_bprintf(&s->buffer, "<span region=\""); |
| 103 | av_bprint_escape(&s->buffer, dialog->style, NULL, |
| 104 | AV_ESCAPE_MODE_XML, |
| 105 | AV_ESCAPE_FLAG_XML_DOUBLE_QUOTES); |
| 106 | av_bprintf(&s->buffer, "\">"); |
| 107 | } |
| 108 | |
| 109 | ret = ff_ass_split_override_codes(&ttml_callbacks, s, dialog->text); |
| 110 | if (ret < 0) { |
| 111 | int log_level = (ret != AVERROR_INVALIDDATA || |
| 112 | avctx->err_recognition & AV_EF_EXPLODE) ? |
| 113 | AV_LOG_ERROR : AV_LOG_WARNING; |
| 114 | av_log(avctx, log_level, |
| 115 | "Splitting received ASS dialog text %s failed: %s\n", |
| 116 | dialog->text, |
| 117 | av_err2str(ret)); |
| 118 | |
| 119 | if (log_level == AV_LOG_ERROR) { |
| 120 | ff_ass_free_dialog(&dialog); |
| 121 | return ret; |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | if (dialog->style) |
| 126 | av_bprintf(&s->buffer, "</span>"); |
| 127 | |
| 128 | ff_ass_free_dialog(&dialog); |
| 129 | } |
| 130 | |
| 131 | if (!s->buffer.len) |
| 132 | return 0; |
| 133 | if (!av_bprint_is_complete(&s->buffer)) { |
| 134 | av_log(avctx, AV_LOG_ERROR, "Buffer too small for TTML event.\n"); |
| 135 | return AVERROR_BUFFER_TOO_SMALL; |
| 136 | } |
nothing calls this directly
no test coverage detected