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avcodec/dvbsubdec: Implement display definition segment fallback from ETSI EN 300 743 V1.3.1
Fixes: subtitles.ts Fixes: Ticket679 Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -1606,6 +1606,7 @@ static int dvbsub_decode(AVCodecContext *avctx,
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int i;
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int ret = 0;
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int got_segment = 0;
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int got_dds = 0;
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ff_dlog(avctx, "DVB sub packet:\n");
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@ -1668,9 +1669,15 @@ static int dvbsub_decode(AVCodecContext *avctx,
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case DVBSUB_DISPLAYDEFINITION_SEGMENT:
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ret = dvbsub_parse_display_definition_segment(avctx, p,
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segment_length);
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got_dds = 1;
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break;
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case DVBSUB_DISPLAY_SEGMENT:
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ret = dvbsub_display_end_segment(avctx, p, segment_length, sub, data_size);
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if (got_segment == 15 && !got_dds && !avctx->width && !avctx->height) {
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// Default from ETSI EN 300 743 V1.3.1 (7.2.1)
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avctx->width = 720;
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avctx->height = 576;
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}
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got_segment |= 16;
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break;
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default:
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