Chiebot-Mirror
/
FFmpeg
mirror of https://github.com/FFmpeg/FFmpeg.git
8
0
Fork 0
Code Issues Projects Releases Wiki Activity

avformat/utils: make AVPacketList helper functions shared

Browse Source 
Based on a patch by Luca Barbato.

Signed-off-by: James Almer <jamrial@gmail.com>
pull/283/head
James Almer 7 years ago
parent 51e3010575
commit 3a4d74c1ff
2 changed files with 72 additions and 24 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 39
      libavformat/internal.h
  2. 57
      libavformat/utils.c

39
libavformat/internal.h
Unescape View File

@ -731,5 +731,44 @@ int ff_unlock_avformat(void);
*/
void ff_format_set_url(AVFormatContext *s, char *url);
#define FF_PACKETLIST_FLAG_REF_PACKET (1 << 0) /**< Create a new reference for the packet instead of
transferring the ownership of the existing one to the
list. */
/**
* Append an AVPacket to the list.
*
* @param head List head element
* @param tail List tail element
* @param pkt The packet being appended
* @param flags Any combination of FF_PACKETLIST_FLAG_* flags
* @return 0 on success, negative AVERROR value on failure. On failure,
the list is unchanged
*/
int ff_packet_list_put(AVPacketList **head, AVPacketList **tail,
AVPacket *pkt, int flags);
/**
* Remove the oldest AVPacket in the list and return it.
*
* @note The pkt will be overwritten completely. The caller owns the
* packet and must unref it by itself.
*
* @param head List head element
* @param tail List tail element
* @param pkt Pointer to an initialized AVPacket struct
*/
int ff_packet_list_get(AVPacketList **head, AVPacketList **tail,
AVPacket *pkt);
/**
* Wipe the list and unref all the packets in it.
*
* @param head List head element
* @param tail List tail element
*/
void ff_packet_list_free(AVPacketList **head, AVPacketList **tail);
void avpriv_register_devices(const AVOutputFormat * const o[], const AVInputFormat * const i[]);
#endif /* AVFORMAT_INTERNAL_H */

57
libavformat/utils.c
Unescape View File

@ -444,8 +444,9 @@ static int init_input(AVFormatContext *s, const char *filename,
s, 0, s->format_probesize);
}
static int add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
AVPacketList **plast_pktl, int ref)
int ff_packet_list_put(AVPacketList **packet_buffer,
AVPacketList **plast_pktl,
AVPacket *pkt, int flags)
{
AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
int ret;
@ -453,12 +454,15 @@ static int add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
if (!pktl)
return AVERROR(ENOMEM);
if (ref) {
if (flags & FF_PACKETLIST_FLAG_REF_PACKET) {
if ((ret = av_packet_ref(&pktl->pkt, pkt)) < 0) {
av_free(pktl);
return ret;
}
} else {
// TODO: Adapt callers in this file so the line below can use
// av_packet_move_ref() to effectively move the reference
// to the list.
pktl->pkt = *pkt;
}
@ -485,9 +489,10 @@ int avformat_queue_attached_pictures(AVFormatContext *s)
continue;
}
ret = add_to_pktbuf(&s->internal->raw_packet_buffer,
&s->streams[i]->attached_pic,
&s->internal->raw_packet_buffer_end, 1);
ret = ff_packet_list_put(&s->internal->raw_packet_buffer,
&s->internal->raw_packet_buffer_end,
&s->streams[i]->attached_pic,
FF_PACKETLIST_FLAG_REF_PACKET);
if (ret < 0)
return ret;
}
@ -909,8 +914,9 @@ int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
if (!pktl && st->request_probe <= 0)
return ret;
err = add_to_pktbuf(&s->internal->raw_packet_buffer, pkt,
&s->internal->raw_packet_buffer_end, 0);
err = ff_packet_list_put(&s->internal->raw_packet_buffer,
&s->internal->raw_packet_buffer_end,
pkt, 0);
if (err)
return err;
s->internal->raw_packet_buffer_remaining_size -= pkt->size;
@ -1408,7 +1414,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
#endif
}
static void free_packet_buffer(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
void ff_packet_list_free(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
{
while (*pkt_buf) {
AVPacketList *pktl = *pkt_buf;
@ -1500,8 +1506,9 @@ static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
compute_pkt_fields(s, st, st->parser, &out_pkt, next_dts, next_pts);
ret = add_to_pktbuf(&s->internal->parse_queue, &out_pkt,
&s->internal->parse_queue_end, 1);
ret = ff_packet_list_put(&s->internal->parse_queue,
&s->internal->parse_queue_end,
&out_pkt, FF_PACKETLIST_FLAG_REF_PACKET);
av_packet_unref(&out_pkt);
if (ret < 0)
goto fail;
@ -1518,9 +1525,9 @@ fail:
return ret;
}
static int read_from_packet_buffer(AVPacketList **pkt_buffer,
AVPacketList **pkt_buffer_end,
AVPacket *pkt)
int ff_packet_list_get(AVPacketList **pkt_buffer,
AVPacketList **pkt_buffer_end,
AVPacket *pkt)
{
AVPacketList *pktl;
av_assert0(*pkt_buffer);
@ -1666,7 +1673,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
}
if (!got_packet && s->internal->parse_queue)
ret = read_from_packet_buffer(&s->internal->parse_queue, &s->internal->parse_queue_end, pkt);
ret = ff_packet_list_get(&s->internal->parse_queue, &s->internal->parse_queue_end, pkt);
if (ret >= 0) {
AVStream *st = s->streams[pkt->stream_index];
@ -1745,7 +1752,7 @@ int av_read_frame(AVFormatContext *s, AVPacket *pkt)
if (!genpts) {
ret = s->internal->packet_buffer
? read_from_packet_buffer(&s->internal->packet_buffer,
? ff_packet_list_get(&s->internal->packet_buffer,
&s->internal->packet_buffer_end, pkt)
: read_frame_internal(s, pkt);
if (ret < 0)
@ -1794,7 +1801,7 @@ int av_read_frame(AVFormatContext *s, AVPacket *pkt)
st = s->streams[next_pkt->stream_index];
if (!(next_pkt->pts == AV_NOPTS_VALUE && st->discard < AVDISCARD_ALL &&
next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
ret = read_from_packet_buffer(&s->internal->packet_buffer,
ret = ff_packet_list_get(&s->internal->packet_buffer,
&s->internal->packet_buffer_end, pkt);
goto return_packet;
}
@ -1809,8 +1816,9 @@ int av_read_frame(AVFormatContext *s, AVPacket *pkt)
return ret;
}
ret = add_to_pktbuf(&s->internal->packet_buffer, pkt,
&s->internal->packet_buffer_end, 1);
ret = ff_packet_list_put(&s->internal->packet_buffer,
&s->internal->packet_buffer_end,
pkt, FF_PACKETLIST_FLAG_REF_PACKET);
av_packet_unref(pkt);
if (ret < 0)
return ret;
@ -1837,9 +1845,9 @@ static void flush_packet_queue(AVFormatContext *s)
{
if (!s->internal)
return;
free_packet_buffer(&s->internal->parse_queue, &s->internal->parse_queue_end);
free_packet_buffer(&s->internal->packet_buffer, &s->internal->packet_buffer_end);
free_packet_buffer(&s->internal->raw_packet_buffer, &s->internal->raw_packet_buffer_end);
ff_packet_list_free(&s->internal->parse_queue, &s->internal->parse_queue_end);
ff_packet_list_free(&s->internal->packet_buffer, &s->internal->packet_buffer_end);
ff_packet_list_free(&s->internal->raw_packet_buffer, &s->internal->raw_packet_buffer_end);
s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
}
@ -3739,8 +3747,9 @@ FF_ENABLE_DEPRECATION_WARNINGS
pkt = &pkt1;
if (!(ic->flags & AVFMT_FLAG_NOBUFFER)) {
ret = add_to_pktbuf(&ic->internal->packet_buffer, pkt,
&ic->internal->packet_buffer_end, 0);
ret = ff_packet_list_put(&ic->internal->packet_buffer,
&ic->internal->packet_buffer_end,
pkt, 0);
if (ret < 0)
goto find_stream_info_err;
}

Write Preview
Loading…
Cancel
Save