diff options
| author | Philip Langdale <philipl@overt.org> | 2012-08-11 20:27:51 -0700 |
|---|---|---|
| committer | Philip Langdale <philipl@overt.org> | 2012-08-15 20:44:23 -0700 |
| commit | 6af680fa070ebc5081045e4b24ceaa4fccfa89b4 (patch) | |
| tree | 89bae7c77e4b1a0070e2521009bd5c4bfe017920 | |
| parent | b1b84b068d20d29aa9e1c0cc3a989e293138997c (diff) | |
| download | ffmpeg-6af680fa070ebc5081045e4b24ceaa4fccfa89b4.tar.gz | |
srtdec: Add timing-less "subrip" decoder.
After various discussions, we concluded that, amongst other things,
it made sense to have a separate subrip decoder that did not use
in-band timing information, and rather relied on the ffmpeg level
timing.
As this is 90% the same as the existing srt decoder, it's implemented
in the same file.
Signed-off-by: Philip Langdale <philipl@overt.org>
| -rw-r--r-- | libavcodec/Makefile | 1 | ||||
| -rw-r--r-- | libavcodec/allcodecs.c | 1 | ||||
| -rw-r--r-- | libavcodec/avcodec.h | 1 | ||||
| -rw-r--r-- | libavcodec/srtdec.c | 31 |
4 files changed, 30 insertions, 4 deletions
diff --git a/libavcodec/Makefile b/libavcodec/Makefile index a8e4e88749..bab97e4767 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -408,6 +408,7 @@ OBJS-$(CONFIG_SONIC_LS_ENCODER) += sonic.o OBJS-$(CONFIG_SP5X_DECODER) += sp5xdec.o mjpegdec.o mjpeg.o OBJS-$(CONFIG_SRT_DECODER) += srtdec.o ass.o OBJS-$(CONFIG_SRT_ENCODER) += srtenc.o ass_split.o +OBJS-$(CONFIG_SUBRIP_DECODER) += srtdec.o ass.o OBJS-$(CONFIG_SUBVIEWER_DECODER) += subviewerdec.o ass.o OBJS-$(CONFIG_SUNRAST_DECODER) += sunrast.o OBJS-$(CONFIG_SUNRAST_ENCODER) += sunrastenc.o diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c index 6b42c30d66..f7ae4498b3 100644 --- a/libavcodec/allcodecs.c +++ b/libavcodec/allcodecs.c @@ -415,6 +415,7 @@ void avcodec_register_all(void) REGISTER_DECODER (REALTEXT, realtext); REGISTER_DECODER (SAMI, sami); REGISTER_ENCDEC (SRT, srt); + REGISTER_DECODER (SUBRIP, subrip); REGISTER_DECODER (SUBVIEWER, subviewer); REGISTER_ENCDEC (XSUB, xsub); diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h index 07a9e10516..372d0cfe4e 100644 --- a/libavcodec/avcodec.h +++ b/libavcodec/avcodec.h @@ -441,6 +441,7 @@ enum AVCodecID { AV_CODEC_ID_SAMI = MKBETAG('S','A','M','I'), AV_CODEC_ID_REALTEXT = MKBETAG('R','T','X','T'), AV_CODEC_ID_SUBVIEWER = MKBETAG('S','u','b','V'), + AV_CODEC_ID_SUBRIP = MKBETAG('S','R','i','p'), /* other specific kind of codecs (generally used for attachments) */ AV_CODEC_ID_FIRST_UNKNOWN = 0x18000, ///< A dummy ID pointing at the start of various fake codecs. diff --git a/libavcodec/srtdec.c b/libavcodec/srtdec.c index 13e4f9c7e3..3d3ace0a87 100644 --- a/libavcodec/srtdec.c +++ b/libavcodec/srtdec.c @@ -217,9 +217,19 @@ static int srt_decode_frame(AVCodecContext *avctx, return avpkt->size; while (ptr < end && *ptr) { - ptr = read_ts(ptr, &ts_start, &ts_end, &x1, &y1, &x2, &y2); - if (!ptr) - break; + if (avctx->codec->id == CODEC_ID_SRT) { + ptr = read_ts(ptr, &ts_start, &ts_end, &x1, &y1, &x2, &y2); + if (!ptr) + break; + } else { + // Do final divide-by-10 outside rescale to force rounding down. + ts_start = av_rescale_q(avpkt->pts, + avctx->time_base, + (AVRational){1,100}); + ts_end = av_rescale_q(avpkt->pts + avpkt->duration, + avctx->time_base, + (AVRational){1,100}); + } ptr = srt_to_ass(avctx, buffer, buffer+sizeof(buffer), ptr, x1, y1, x2, y2); ff_ass_add_rect(sub, buffer, ts_start, ts_end-ts_start, 0); @@ -229,11 +239,24 @@ static int srt_decode_frame(AVCodecContext *avctx, return avpkt->size; } +#if CONFIG_SRT_DECODER AVCodec ff_srt_decoder = { .name = "srt", - .long_name = NULL_IF_CONFIG_SMALL("SubRip subtitle"), + .long_name = NULL_IF_CONFIG_SMALL("SubRip subtitle with embedded timing"), .type = AVMEDIA_TYPE_SUBTITLE, .id = AV_CODEC_ID_SRT, .init = ff_ass_subtitle_header_default, .decode = srt_decode_frame, }; +#endif + +#if CONFIG_SUBRIP_DECODER +AVCodec ff_subrip_decoder = { + .name = "subrip", + .long_name = NULL_IF_CONFIG_SMALL("SubRip subtitle"), + .type = AVMEDIA_TYPE_SUBTITLE, + .id = AV_CODEC_ID_SUBRIP, + .init = ff_ass_subtitle_header_default, + .decode = srt_decode_frame, +}; +#endif |