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Code Issues Releases Activity

lavf/mov: simplify timecode track ref.

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There can be only one track reference. The multiple tref handling is
handled at a different level.
This commit is contained in:
Clément Bœsch 2013-01-01 15:42:33 +01:00
parent 69a1667b06
commit 8d398f40b4
2 changed files with 8 additions and 25 deletions
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4
libavformat/isom.h
View File

@ -128,9 +128,7 @@ typedef struct MOVStreamContext {
unsigned drefs_count;
MOVDref *drefs;
int dref_id;
unsigned tref_type;
unsigned trefs_count;
uint32_t *trefs;
int timecode_track;
int wrong_dts; ///< dts are wrong due to huge ctts offset (iMovie files)
int width; ///< tkhd width
int height; ///< tkhd height

29
libavformat/mov.c
View File

@ -2698,24 +2698,12 @@ static int mov_read_chan2(MOVContext *c, AVIOContext *pb, MOVAtom atom)
static int mov_read_tmcd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
{
uint32_t i;
MOVStreamContext *sc;
if (c->fc->nb_streams < 1)
return AVERROR_INVALIDDATA;
sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data;
if (atom.size < 4)
return 0;
sc->trefs_count = atom.size / 4;
sc->trefs = av_malloc(sc->trefs_count * sizeof(*sc->trefs));
if (!sc->trefs)
return AVERROR(ENOMEM);
sc->tref_type = atom.type;
for (i = 0; i < sc->trefs_count; i++)
sc->trefs[i] = avio_rb32(pb);
sc->timecode_track = avio_rb32(pb);
return 0;
}
@ -3077,7 +3065,6 @@ static int mov_read_close(AVFormatContext *s)
av_freep(&sc->drefs[j].dir);
}
av_freep(&sc->drefs);
av_freep(&sc->trefs);
if (sc->pb && sc->pb != s->pb)
avio_close(sc->pb);
sc->pb = NULL;
@ -3105,17 +3092,15 @@ static int mov_read_close(AVFormatContext *s)
static int tmcd_is_referenced(AVFormatContext *s, int tmcd_id)
{
int i, j;
int i;
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
MOVStreamContext *sc = st->priv_data;
if (s->streams[i]->codec->codec_type != AVMEDIA_TYPE_VIDEO)
continue;
for (j = 0; j < sc->trefs_count; j++)
if (tmcd_id == sc->trefs[j])
return 1;
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
sc->timecode_track == tmcd_id)
return 1;
}
return 0;
}
@ -3178,9 +3163,9 @@ static int mov_read_header(AVFormatContext *s)
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
MOVStreamContext *sc = st->priv_data;
if (sc->tref_type == AV_RL32("tmcd") && sc->trefs_count) {
if (sc->timecode_track > 0) {
AVDictionaryEntry *tcr;
int tmcd_st_id = sc->trefs[0] - 1;
int tmcd_st_id = sc->timecode_track - 1;
if (tmcd_st_id < 0 || tmcd_st_id >= s->nb_streams)
continue;