diff options
Diffstat (limited to 'libavcodec/dvbsub.c')
| -rw-r--r-- | libavcodec/dvbsub.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/libavcodec/dvbsub.c b/libavcodec/dvbsub.c index 8cce702a9e..a8d43d81d6 100644 --- a/libavcodec/dvbsub.c +++ b/libavcodec/dvbsub.c @@ -247,9 +247,10 @@ static void dvb_encode_rle8(uint8_t **pq, *pq = q; } -static int encode_dvb_subtitles(DVBSubtitleContext *s, +static int encode_dvb_subtitles(AVCodecContext *avctx, uint8_t *outbuf, const AVSubtitle *h) { + DVBSubtitleContext *s = avctx->priv_data; uint8_t *q, *pseg_len; int page_id, region_id, clut_id, object_id, i, bpp_index, page_state; @@ -261,6 +262,19 @@ static int encode_dvb_subtitles(DVBSubtitleContext *s, if (h->num_rects && !h->rects) return -1; + if (avctx->width > 0 && avctx->height > 0) { + /* display definition segment */ + *q++ = 0x0f; /* sync_byte */ + *q++ = 0x14; /* segment_type */ + bytestream_put_be16(&q, page_id); + pseg_len = q; + q += 2; /* segment length */ + *q++ = 0x00; /* dds version number & display window flag */ + bytestream_put_be16(&q, avctx->width - 1); /* display width */ + bytestream_put_be16(&q, avctx->height - 1); /* display height */ + bytestream_put_be16(&pseg_len, q - pseg_len - 2); + } + /* page composition segment */ *q++ = 0x0f; /* sync_byte */ @@ -446,10 +460,9 @@ static int dvbsub_encode(AVCodecContext *avctx, unsigned char *buf, int buf_size, const AVSubtitle *sub) { - DVBSubtitleContext *s = avctx->priv_data; int ret; - ret = encode_dvb_subtitles(s, buf, sub); + ret = encode_dvb_subtitles(avctx, buf, sub); return ret; } |