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avformat/subtitles: use av_packet_alloc() to allocate packets 

Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2021-02-03 20:55:27 -03:00
parent fd23efb20b
commit 98a776b5e3
6 changed files with 45 additions and 40 deletions
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2
libavformat/jacosubdec.c
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@ -250,7 +250,7 @@ static int jacosub_read_header(AVFormatContext *s)
/* SHIFT and TIMERES affect the whole script so packet timing can only be
* done in a second pass */
for (i = 0; i < jacosub->q.nb_subs; i++) {
AVPacket *sub = &jacosub->q.subs[i];
AVPacket *sub = jacosub->q.subs[i];
read_ts(jacosub, sub->data, &sub->pts, &sub->duration);
}
ff_subtitles_queue_finalize(s, &jacosub->q);

4
libavformat/mpeg.c
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@ -934,7 +934,7 @@ static int vobsub_read_packet(AVFormatContext *s, AVPacket *pkt)
if (tmpq->current_sub_idx >= tmpq->nb_subs)
continue;
ts = tmpq->subs[tmpq->current_sub_idx].pts;
ts = tmpq->subs[tmpq->current_sub_idx]->pts;
if (ts < min_ts) {
min_ts = ts;
sid = i;
@ -950,7 +950,7 @@ static int vobsub_read_packet(AVFormatContext *s, AVPacket *pkt)
/* compute maximum packet size using the next packet position. This is
* useful when the len in the header is non-sense */
if (q->current_sub_idx < q->nb_subs) {
psize = q->subs[q->current_sub_idx].pos - pkt->pos;
psize = q->subs[q->current_sub_idx]->pos - pkt->pos;
} else {
int64_t fsize = avio_size(pb);
psize = fsize < 0 ? 0xffff : fsize - pkt->pos;

4
libavformat/mpsubdec.c
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@ -147,8 +147,8 @@ static int mpsub_read_header(AVFormatContext *s)
if (common_factor > 1) {
common_factor = av_gcd(pts_info.num, common_factor);
for (i = 0; i < mpsub->q.nb_subs; i++) {
mpsub->q.subs[i].pts /= common_factor;
mpsub->q.subs[i].duration /= common_factor;
mpsub->q.subs[i]->pts /= common_factor;
mpsub->q.subs[i]->duration /= common_factor;
}
pts_info.num /= common_factor;
}

69
libavformat/subtitles.c
View File

@ -111,13 +111,13 @@ int ff_text_peek_r8(FFTextReader *r)
AVPacket *ff_subtitles_queue_insert(FFDemuxSubtitlesQueue *q,
const uint8_t *event, size_t len, int merge)
{
AVPacket *subs, *sub;
AVPacket **subs, *sub;
if (merge && q->nb_subs > 0) {
/* merge with previous event */
int old_len;
sub = &q->subs[q->nb_subs - 1];
sub = q->subs[q->nb_subs - 1];
old_len = sub->size;
if (av_grow_packet(sub, len) < 0)
return NULL;
@ -132,10 +132,14 @@ AVPacket *ff_subtitles_queue_insert(FFDemuxSubtitlesQueue *q,
if (!subs)
return NULL;
q->subs = subs;
sub = &subs[q->nb_subs];
if (av_new_packet(sub, len) < 0)
sub = av_packet_alloc();
if (!sub)
return NULL;
q->nb_subs++;
if (av_new_packet(sub, len) < 0) {
av_packet_free(&sub);
return NULL;
}
subs[q->nb_subs++] = sub;
sub->flags |= AV_PKT_FLAG_KEY;
sub->pts = sub->dts = 0;
memcpy(sub->data, event, len);
@ -145,8 +149,8 @@ AVPacket *ff_subtitles_queue_insert(FFDemuxSubtitlesQueue *q,
static int cmp_pkt_sub_ts_pos(const void *a, const void *b)
{
const AVPacket *s1 = a;
const AVPacket *s2 = b;
const AVPacket *s1 = *(const AVPacket **)a;
const AVPacket *s2 = *(const AVPacket **)b;
if (s1->pts == s2->pts)
return FFDIFFSIGN(s1->pos, s2->pos);
return FFDIFFSIGN(s1->pts , s2->pts);
@ -154,8 +158,8 @@ static int cmp_pkt_sub_ts_pos(const void *a, const void *b)
static int cmp_pkt_sub_pos_ts(const void *a, const void *b)
{
const AVPacket *s1 = a;
const AVPacket *s2 = b;
const AVPacket *s1 = *(const AVPacket **)a;
const AVPacket *s2 = *(const AVPacket **)b;
if (s1->pos == s2->pos) {
if (s1->pts == s2->pts)
return 0;
@ -170,18 +174,18 @@ static void drop_dups(void *log_ctx, FFDemuxSubtitlesQueue *q)
for (i = 1; i < q->nb_subs; i++) {
const int last_id = i - 1 - drop;
const AVPacket *last = &q->subs[last_id];
const AVPacket *last = q->subs[last_id];
if (q->subs[i].pts == last->pts &&
q->subs[i].duration == last->duration &&
q->subs[i].stream_index == last->stream_index &&
!strcmp(q->subs[i].data, last->data)) {
if (q->subs[i]->pts == last->pts &&
q->subs[i]->duration == last->duration &&
q->subs[i]->stream_index == last->stream_index &&
!strcmp(q->subs[i]->data, last->data)) {
av_packet_unref(&q->subs[i]);
av_packet_free(&q->subs[i]);
drop++;
} else if (drop) {
q->subs[last_id + 1] = q->subs[i];
memset(&q->subs[i], 0, sizeof(q->subs[i])); // for safety
q->subs[i] = NULL;
}
}
@ -202,8 +206,8 @@ void ff_subtitles_queue_finalize(void *log_ctx, FFDemuxSubtitlesQueue *q)
q->sort == SUB_SORT_TS_POS ? cmp_pkt_sub_ts_pos
: cmp_pkt_sub_pos_ts);
for (i = 0; i < q->nb_subs; i++)
if (q->subs[i].duration < 0 && i < q->nb_subs - 1)
q->subs[i].duration = q->subs[i + 1].pts - q->subs[i].pts;
if (q->subs[i]->duration < 0 && i < q->nb_subs - 1)
q->subs[i]->duration = q->subs[i + 1]->pts - q->subs[i]->pts;
if (!q->keep_duplicates)
drop_dups(log_ctx, q);
@ -211,11 +215,12 @@ void ff_subtitles_queue_finalize(void *log_ctx, FFDemuxSubtitlesQueue *q)
int ff_subtitles_queue_read_packet(FFDemuxSubtitlesQueue *q, AVPacket *pkt)
{
AVPacket *sub = q->subs + q->current_sub_idx;
AVPacket *sub;
int ret;
if (q->current_sub_idx == q->nb_subs)
return AVERROR_EOF;
sub = q->subs[q->current_sub_idx];
if ((ret = av_packet_ref(pkt, sub)) < 0) {
return ret;
}
@ -238,9 +243,9 @@ static int search_sub_ts(const FFDemuxSubtitlesQueue *q, int64_t ts)
if (s1 == s2)
return s1;
if (s1 == s2 - 1)
return q->subs[s1].pts <= q->subs[s2].pts ? s1 : s2;
return q->subs[s1]->pts <= q->subs[s2]->pts ? s1 : s2;
mid = (s1 + s2) / 2;
if (q->subs[mid].pts <= ts)
if (q->subs[mid]->pts <= ts)
s1 = mid;
else
s2 = mid;
@ -262,24 +267,24 @@ int ff_subtitles_queue_seek(FFDemuxSubtitlesQueue *q, AVFormatContext *s, int st
if (idx < 0)
return idx;
for (i = idx; i < q->nb_subs && q->subs[i].pts < min_ts; i++)
if (stream_index == -1 || q->subs[i].stream_index == stream_index)
for (i = idx; i < q->nb_subs && q->subs[i]->pts < min_ts; i++)
if (stream_index == -1 || q->subs[i]->stream_index == stream_index)
idx = i;
for (i = idx; i > 0 && q->subs[i].pts > max_ts; i--)
if (stream_index == -1 || q->subs[i].stream_index == stream_index)
for (i = idx; i > 0 && q->subs[i]->pts > max_ts; i--)
if (stream_index == -1 || q->subs[i]->stream_index == stream_index)
idx = i;
ts_selected = q->subs[idx].pts;
ts_selected = q->subs[idx]->pts;
if (ts_selected < min_ts || ts_selected > max_ts)
return AVERROR(ERANGE);
/* look back in the latest subtitles for overlapping subtitles */
for (i = idx - 1; i >= 0; i--) {
int64_t pts = q->subs[i].pts;
if (q->subs[i].duration <= 0 ||
(stream_index != -1 && q->subs[i].stream_index != stream_index))
int64_t pts = q->subs[i]->pts;
if (q->subs[i]->duration <= 0 ||
(stream_index != -1 && q->subs[i]->stream_index != stream_index))
continue;
if (pts >= min_ts && pts > ts_selected - q->subs[i].duration)
if (pts >= min_ts && pts > ts_selected - q->subs[i]->duration)
idx = i;
else
break;
@ -291,7 +296,7 @@ int ff_subtitles_queue_seek(FFDemuxSubtitlesQueue *q, AVFormatContext *s, int st
* queue is ordered by pts and then filepos, so we can take the first
* entry for a given timestamp. */
if (stream_index == -1)
while (idx > 0 && q->subs[idx - 1].pts == q->subs[idx].pts)
while (idx > 0 && q->subs[idx - 1]->pts == q->subs[idx]->pts)
idx--;
q->current_sub_idx = idx;
@ -304,7 +309,7 @@ void ff_subtitles_queue_clean(FFDemuxSubtitlesQueue *q)
int i;
for (i = 0; i < q->nb_subs; i++)
av_packet_unref(&q->subs[i]);
av_packet_free(&q->subs[i]);
av_freep(&q->subs);
q->nb_subs = q->allocated_size = q->current_sub_idx = 0;
}

2
libavformat/subtitles.h
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@ -100,7 +100,7 @@ int ff_text_peek_r8(FFTextReader *r);
void ff_text_read(FFTextReader *r, char *buf, size_t size);
typedef struct {
AVPacket *subs; ///< array of subtitles packets
AVPacket **subs; ///< array of subtitles packets
int nb_subs; ///< number of subtitles packets
int allocated_size; ///< allocated size for subs
int current_sub_idx; ///< current position for the read packet callback

4
libavformat/tedcaptionsdec.c
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@ -293,9 +293,9 @@ static av_cold int tedcaptions_read_header(AVFormatContext *avf)
}
ff_subtitles_queue_finalize(avf, &tc->subs);
for (i = 0; i < tc->subs.nb_subs; i++)
tc->subs.subs[i].pts += tc->start_time;
tc->subs.subs[i]->pts += tc->start_time;
last = &tc->subs.subs[tc->subs.nb_subs - 1];
last = tc->subs.subs[tc->subs.nb_subs - 1];
st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE;
st->codecpar->codec_id = AV_CODEC_ID_TEXT;
avpriv_set_pts_info(st, 64, 1, 1000);