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charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Archived-At: List-Archive: List-Post: Avoids some allocations. Signed-off-by: Andreas Rheinhardt --- libavformat/matroskaenc.c | 30 ++++++++++-------------------- 1 file changed, 10 insertions(+), 20 deletions(-) diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c index f1385c6b21..60647869ca 100644 --- a/libavformat/matroskaenc.c +++ b/libavformat/matroskaenc.c @@ -220,7 +220,8 @@ typedef struct MatroskaMuxContext { * to write the length field of EBML Masters. * Every user has to reset the buffer after using it and * different uses may not overlap. It is currently used in - * mkv_write_tag(). */ + * mkv_write_tag(), in mkv_assemble_cues() as well as in + * mkv_check_new_extra_data(). */ AVIOContext *tmp_bc; AVPacket *cur_audio_pkt; @@ -929,17 +930,10 @@ static int mkv_add_cuepoint(MatroskaMuxContext *mkv, int stream, int64_t ts, return 0; } -static int mkv_assemble_cues(AVStream **streams, AVIOContext *dyn_cp, +static int mkv_assemble_cues(AVStream **streams, AVIOContext *dyn_cp, AVIOContext *cuepoint, const mkv_cues *cues, mkv_track *tracks, int num_tracks, uint64_t offset) { - AVIOContext *cuepoint; - int ret; - - ret = avio_open_dyn_buf(&cuepoint); - if (ret < 0) - return ret; - for (mkv_cuepoint *entry = cues->entries, *end = entry + cues->num_entries; entry < end;) { uint64_t pts = entry->pts; @@ -969,14 +963,13 @@ static int mkv_assemble_cues(AVStream **streams, AVIOContext *dyn_cp, end_ebml_master(cuepoint, track_positions); } while (++entry < end && entry->pts == pts); size = avio_get_dyn_buf(cuepoint, &buf); - if ((ret = cuepoint->error) < 0) - break; + if (cuepoint->error < 0) + return cuepoint->error; put_ebml_binary(dyn_cp, MATROSKA_ID_POINTENTRY, buf, size); ffio_reset_dyn_buf(cuepoint); } - ffio_free_dyn_buf(&cuepoint); - return ret; + return 0; } static int put_xiph_codecpriv(AVFormatContext *s, AVIOContext *pb, @@ -2648,23 +2641,20 @@ static int mkv_check_new_extra_data(AVFormatContext *s, const AVPacket *pkt) // See https://bugs.chromium.org/p/aomedia/issues/detail?id=2012 case AV_CODEC_ID_AV1: if (side_data_size && mkv->track.bc && !par->extradata_size) { - AVIOContext *dyn_cp; + AVIOContext *const dyn_cp = mkv->tmp_bc; uint8_t *codecpriv; int codecpriv_size; - ret = avio_open_dyn_buf(&dyn_cp); - if (ret < 0) - return ret; ff_isom_write_av1c(dyn_cp, side_data, side_data_size, 1); codecpriv_size = avio_get_dyn_buf(dyn_cp, &codecpriv); if ((ret = dyn_cp->error) < 0 || !codecpriv_size && (ret = AVERROR_INVALIDDATA)) { - ffio_free_dyn_buf(&dyn_cp); + ffio_reset_dyn_buf(dyn_cp); return ret; } avio_seek(mkv->track.bc, track->codecpriv_offset, SEEK_SET); // Do not write the OBUs as we don't have space saved for them put_ebml_binary(mkv->track.bc, MATROSKA_ID_CODECPRIVATE, codecpriv, 4); - ffio_free_dyn_buf(&dyn_cp); + ffio_reset_dyn_buf(dyn_cp); ret = ff_alloc_extradata(par, side_data_size); if (ret < 0) return ret; @@ -2891,7 +2881,7 @@ redo_cues: if (ret < 0) return ret; - ret = mkv_assemble_cues(s->streams, cues, &mkv->cues, + ret = mkv_assemble_cues(s->streams, cues, mkv->tmp_bc, &mkv->cues, mkv->tracks, s->nb_streams, offset); if (ret < 0) { ffio_free_dyn_buf(&cues); -- 2.34.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".