On Fri, 27 Jan 2017 17:32:08 +0100 Paul Arzelier <paul.arzel...@free.fr> wrote:
> From 227d7d1f4b5665f824900cf2b14863621180dd1c Mon Sep 17 00:00:00 2001 > From: Polochon-street <polochonstr...@gmx.fr> > Date: Fri, 27 Jan 2017 16:49:41 +0100 > Subject: [PATCH] Ignore ID3 tags if other tags are present (e.g. vorbis) > Originally-by: Ben Boeckel <maths...@gmail.com> > --- > libavformat/internal.h | 5 +++++ > libavformat/mp3dec.c | 5 +++++ > libavformat/options.c | 1 + > libavformat/utils.c | 16 +++++++++++++++- > 4 files changed, 26 insertions(+), 1 deletion(-) > Looks largely ok to me, just a few minor nits. > diff --git a/libavformat/internal.h b/libavformat/internal.h > index 9d614fb12c..63a1724cfa 100644 > --- a/libavformat/internal.h > +++ b/libavformat/internal.h > @@ -140,6 +140,11 @@ struct AVFormatInternal { > * Whether or not avformat_init_output fully initialized streams > */ > int streams_initialized; > + > + /** > + * ID3v2 tag useful for MP3 demuxing The tag is used for many file formats (unfortunately), not just mp3. So I'm not sure if the comment is correct. > + */ > + AVDictionary *id3v2_meta; > }; > > struct AVStreamInternal { > diff --git a/libavformat/mp3dec.c b/libavformat/mp3dec.c > index 099ca57d24..8540e45e4f 100644 > --- a/libavformat/mp3dec.c > +++ b/libavformat/mp3dec.c > @@ -349,6 +349,11 @@ static int mp3_read_header(AVFormatContext *s) > int ret; > int i; > > + if (s->internal->id3v2_meta) > + s->metadata = s->internal->id3v2_meta; Slightly odd that it checks for id3v2_meta being NULL. Seems redundant? > + > + s->internal->id3v2_meta = NULL; > + > st = avformat_new_stream(s, NULL); > if (!st) > return AVERROR(ENOMEM); > diff --git a/libavformat/options.c b/libavformat/options.c > index 25a506eef8..d8aca472c5 100644 > --- a/libavformat/options.c > +++ b/libavformat/options.c > @@ -144,6 +144,7 @@ AVFormatContext *avformat_alloc_context(void) > ic->internal->offset = AV_NOPTS_VALUE; > ic->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE; > ic->internal->shortest_end = AV_NOPTS_VALUE; > + ic->internal->id3v2_meta = NULL; Not necessary. All fields are initialized to 0 by default, because the struct is allocated by av_mallocz(). > > return ic; > } > diff --git a/libavformat/utils.c b/libavformat/utils.c > index d5dfca7dec..b44d688213 100644 > --- a/libavformat/utils.c > +++ b/libavformat/utils.c > @@ -588,12 +588,25 @@ int avformat_open_input(AVFormatContext **ps, const > char *filename, > > /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */ > if (s->pb) > - ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta, 0); > + ff_id3v2_read_dict(s->pb, &s->internal->id3v2_meta, > ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta); > > if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header) > if ((ret = s->iformat->read_header(s)) < 0) > goto fail; > > + if (!s->metadata) { > + s->metadata = s->internal->id3v2_meta; > + s->internal->id3v2_meta = NULL; > + } else if (s->internal->id3v2_meta) { > + int level = AV_LOG_WARNING; > + if (s->error_recognition & AV_EF_COMPLIANT) > + level = AV_LOG_ERROR; > + av_log(s, level, "Discarding ID3 tags because more suitable tags > were found.\n"); > + av_dict_free(&s->internal->id3v2_meta); > + if (s->error_recognition & AV_EF_EXPLODE) > + return AVERROR_INVALIDDATA; > + } > + > if (id3v2_extra_meta) { > if (!strcmp(s->iformat->name, "mp3") || !strcmp(s->iformat->name, > "aac") || > !strcmp(s->iformat->name, "tta")) { > @@ -627,6 +640,7 @@ int avformat_open_input(AVFormatContext **ps, const char > *filename, > fail: > ff_id3v2_free_extra_meta(&id3v2_extra_meta); > av_dict_free(&tmp); > + av_dict_free(&s->internal->id3v2_meta); > if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO)) > avio_closep(&s->pb); > avformat_free_context(s); You could free the tag in avformat_free_context(), which might be slightly simpler (don't need to care about success vs. error path), but it doesn't actually matter. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel