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lavf: replace avio_seek(SEEK_CUR) with avio_skip where it makes sense

Browse Source 
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
This commit is contained in:
Anton Khirnov 2011-03-15 09:14:38 +01:00 committed by Ronald S. Bultje
parent cbf5d22d24
commit 45a8a02a41
76 changed files with 348 additions and 348 deletions
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6
libavformat/4xm.c
View File

@ -106,7 +106,7 @@ static int fourxm_read_header(AVFormatContext *s,
fourxm->fps = 1.0;
/* skip the first 3 32-bit numbers */
avio_seek(pb, 12, SEEK_CUR);
avio_skip(pb, 12);
/* check for LIST-HEAD */
GET_LIST_HEADER();
@ -322,12 +322,12 @@ static int fourxm_read_packet(AVFormatContext *s,
fourxm->tracks[track_number].audio_pts += audio_frame_count;
} else {
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
}
break;
default:
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
break;
}
}

4
libavformat/aea.c
View File

@ -62,9 +62,9 @@ static int aea_read_header(AVFormatContext *s,
return AVERROR(ENOMEM);
/* Parse the amount of channels and skip to pos 2048(0x800) */
avio_seek(s->pb, 264, SEEK_CUR);
avio_skip(s->pb, 264);
st->codec->channels = avio_r8(s->pb);
avio_seek(s->pb, 1783, SEEK_CUR);
avio_skip(s->pb, 1783);
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;

8
libavformat/aiffdec.c
View File

@ -70,7 +70,7 @@ static void get_meta(AVFormatContext *s, const char *key, int size)
int res;
if (!str) {
avio_seek(s->pb, size, SEEK_CUR);
avio_skip(s->pb, size);
return;
}
@ -152,7 +152,7 @@ static unsigned int get_aiff_header(AVIOContext *pb, AVCodecContext *codec,
/* Chunk is over */
if (size)
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
return num_frames;
}
@ -242,7 +242,7 @@ static int aiff_read_header(AVFormatContext *s,
av_log(s, AV_LOG_ERROR, "file is not seekable\n");
return -1;
}
avio_seek(pb, size - 8, SEEK_CUR);
avio_skip(pb, size - 8);
break;
case MKTAG('w', 'a', 'v', 'e'):
if ((uint64_t)size > (1<<30))
@ -256,7 +256,7 @@ static int aiff_read_header(AVFormatContext *s,
default: /* Jump */
if (size & 1) /* Always even aligned */
size++;
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
}
}

16
libavformat/anm.c
View File

@ -83,7 +83,7 @@ static int read_header(AVFormatContext *s,
AVStream *st;
int i, ret;
avio_seek(pb, 4, SEEK_CUR); /* magic number */
avio_skip(pb, 4); /* magic number */
if (avio_rl16(pb) != MAX_PAGES) {
av_log_ask_for_sample(s, "max_pages != " AV_STRINGIFY(MAX_PAGES) "\n");
return AVERROR_INVALIDDATA;
@ -91,7 +91,7 @@ static int read_header(AVFormatContext *s,
anm->nb_pages = avio_rl16(pb);
anm->nb_records = avio_rl32(pb);
avio_seek(pb, 2, SEEK_CUR); /* max records per page */
avio_skip(pb, 2); /* max records per page */
anm->page_table_offset = avio_rl16(pb);
if (avio_rl32(pb) != ANIM_TAG)
return AVERROR_INVALIDDATA;
@ -107,13 +107,13 @@ static int read_header(AVFormatContext *s,
st->codec->height = avio_rl16(pb);
if (avio_r8(pb) != 0)
goto invalid;
avio_seek(pb, 1, SEEK_CUR); /* frame rate multiplier info */
avio_skip(pb, 1); /* frame rate multiplier info */
/* ignore last delta record (used for looping) */
if (avio_r8(pb)) /* has_last_delta */
anm->nb_records = FFMAX(anm->nb_records - 1, 0);
avio_seek(pb, 1, SEEK_CUR); /* last_delta_valid */
avio_skip(pb, 1); /* last_delta_valid */
if (avio_r8(pb) != 0)
goto invalid;
@ -121,15 +121,15 @@ static int read_header(AVFormatContext *s,
if (avio_r8(pb) != 1)
goto invalid;
avio_seek(pb, 1, SEEK_CUR); /* other recs per frame */
avio_skip(pb, 1); /* other recs per frame */
if (avio_r8(pb) != 1)
goto invalid;
avio_seek(pb, 32, SEEK_CUR); /* record_types */
avio_skip(pb, 32); /* record_types */
st->nb_frames = avio_rl32(pb);
av_set_pts_info(st, 64, 1, avio_rl16(pb));
avio_seek(pb, 58, SEEK_CUR);
avio_skip(pb, 58);
/* color cycling and palette data */
st->codec->extradata_size = 16*8 + 4*256;
@ -193,7 +193,7 @@ repeat:
/* parse page header */
if (anm->record < 0) {
avio_seek(pb, anm->page_table_offset + MAX_PAGES*6 + (anm->page<<16), SEEK_SET);
avio_seek(pb, 8 + 2*p->nb_records, SEEK_CUR);
avio_skip(pb, 8 + 2*p->nb_records);
anm->record = 0;
}

6
libavformat/ape.c
View File

@ -187,7 +187,7 @@ static int ape_read_header(AVFormatContext * s, AVFormatParameters * ap)
/* Skip any unknown bytes at the end of the descriptor.
This is for future compatibility */
if (ape->descriptorlength > 52)
avio_seek(pb, ape->descriptorlength - 52, SEEK_CUR);
avio_skip(pb, ape->descriptorlength - 52);
/* Read header data */
ape->compressiontype = avio_rl16(pb);
@ -212,7 +212,7 @@ static int ape_read_header(AVFormatContext * s, AVFormatParameters * ap)
ape->finalframeblocks = avio_rl32(pb);
if (ape->formatflags & MAC_FORMAT_FLAG_HAS_PEAK_LEVEL) {
avio_seek(pb, 4, SEEK_CUR); /* Skip the peak level */
avio_skip(pb, 4); /* Skip the peak level */
ape->headerlength += 4;
}
@ -239,7 +239,7 @@ static int ape_read_header(AVFormatContext * s, AVFormatParameters * ap)
/* Skip any stored wav header */
if (!(ape->formatflags & MAC_FORMAT_FLAG_CREATE_WAV_HEADER))
avio_seek(pb, ape->wavheaderlength, SEEK_CUR);
avio_skip(pb, ape->wavheaderlength);
}
if(!ape->totalframes){

36
libavformat/asfdec.c
View File

@ -350,7 +350,7 @@ static int asf_read_stream_properties(AVFormatContext *s, int64_t size)
avio_rl16(pb); /* panes */
st->codec->bits_per_coded_sample = avio_rl16(pb); /* depth */
tag1 = avio_rl32(pb);
avio_seek(pb, 20, SEEK_CUR);
avio_skip(pb, 20);
// av_log(s, AV_LOG_DEBUG, "size:%d tsize:%d sizeX:%d\n", size, total_size, sizeX);
if (sizeX > 40) {
st->codec->extradata_size = sizeX - 40;
@ -388,7 +388,7 @@ static int asf_read_stream_properties(AVFormatContext *s, int64_t size)
st->need_parsing = AVSTREAM_PARSE_FULL_ONCE;
}
pos2 = avio_tell(pb);
avio_seek(pb, size - (pos2 - pos1 + 24), SEEK_CUR);
avio_skip(pb, size - (pos2 - pos1 + 24));
return 0;
}
@ -428,14 +428,14 @@ static int asf_read_ext_stream_properties(AVFormatContext *s, int64_t size)
for (i=0; i<stream_ct; i++){
avio_rl16(pb);
ext_len = avio_rl16(pb);
avio_seek(pb, ext_len, SEEK_CUR);
avio_skip(pb, ext_len);
}
for (i=0; i<payload_ext_ct; i++){
ff_get_guid(pb, &g);
ext_d=avio_rl16(pb);
ext_len=avio_rl32(pb);
avio_seek(pb, ext_len, SEEK_CUR);
avio_skip(pb, ext_len);
}
return 0;
@ -455,7 +455,7 @@ static int asf_read_content_desc(AVFormatContext *s, int64_t size)
get_tag(s, "author" , 0, len2);
get_tag(s, "copyright", 0, len3);
get_tag(s, "comment" , 0, len4);
avio_seek(pb, len5, SEEK_CUR);
avio_skip(pb, len5);
return 0;
}
@ -475,7 +475,7 @@ static int asf_read_ext_content_desc(AVFormatContext *s, int64_t size)
if (name_len%2) // must be even, broken lavf versions wrote len-1
name_len += 1;
if ((ret = avio_get_str16le(pb, name_len, name, sizeof(name))) < name_len)
avio_seek(pb, name_len - ret, SEEK_CUR);
avio_skip(pb, name_len - ret);
value_type = avio_rl16(pb);
value_len = avio_rl16(pb);
if (!value_type && value_len%2)
@ -505,7 +505,7 @@ static int asf_read_language_list(AVFormatContext *s, int64_t size)
char lang[6];
unsigned int lang_len = avio_r8(pb);
if ((ret = avio_get_str16le(pb, lang_len, lang, sizeof(lang))) < lang_len)
avio_seek(pb, lang_len - ret, SEEK_CUR);
avio_skip(pb, lang_len - ret);
if (j < 128)
av_strlcpy(asf->stream_languages[j], lang, sizeof(*asf->stream_languages));
}
@ -531,10 +531,10 @@ static int asf_read_metadata(AVFormatContext *s, int64_t size)
value_len= avio_rl32(pb);
if ((ret = avio_get_str16le(pb, name_len, name, sizeof(name))) < name_len)
avio_seek(pb, name_len - ret, SEEK_CUR);
avio_skip(pb, name_len - ret);
//av_log(s, AV_LOG_ERROR, "%d %d %d %d %d <%s>\n", i, stream_num, name_len, value_type, value_len, name);
value_num= avio_rl16(pb);//we should use get_value() here but it does not work 2 is le16 here but le32 elsewhere
avio_seek(pb, value_len - 2, SEEK_CUR);
avio_skip(pb, value_len - 2);
if(stream_num<128){
if (!strcmp(name, "AspectRatioX")) asf->dar[stream_num].num= value_num;
@ -571,7 +571,7 @@ static int asf_read_marker(AVFormatContext *s, int64_t size)
avio_rl32(pb); // flags
name_len = avio_rl32(pb); // name length
if ((ret = avio_get_str16le(pb, name_len * 2, name, sizeof(name))) < name_len)
avio_seek(pb, name_len - ret, SEEK_CUR);
avio_skip(pb, name_len - ret);
ff_new_chapter(s, i, (AVRational){1, 10000000}, pres_time, AV_NOPTS_VALUE, name );
}
@ -826,16 +826,16 @@ static int asf_read_frame_header(AVFormatContext *s, AVIOContext *pb){
// for(i=0; i<asf->packet_replic_size-8; i++)
// av_log(s, AV_LOG_DEBUG, "%02X ",avio_r8(pb));
// av_log(s, AV_LOG_DEBUG, "\n");
avio_seek(pb, 10, SEEK_CUR);
avio_skip(pb, 10);
ts0= avio_rl64(pb);
ts1= avio_rl64(pb);
avio_seek(pb, 12, SEEK_CUR);
avio_skip(pb, 12);
avio_rl32(pb);
avio_seek(pb, asf->packet_replic_size - 8 - 38 - 4, SEEK_CUR);
avio_skip(pb, asf->packet_replic_size - 8 - 38 - 4);
if(ts0!= -1) asf->packet_frag_timestamp= ts0/10000;
else asf->packet_frag_timestamp= AV_NOPTS_VALUE;
}else
avio_seek(pb, asf->packet_replic_size - 8, SEEK_CUR);
avio_skip(pb, asf->packet_replic_size - 8);
rsize += asf->packet_replic_size; // FIXME - check validity
} else if (asf->packet_replic_size==1){
// multipacket - frag_offset is beginning timestamp
@ -895,7 +895,7 @@ static int ff_asf_parse_packet(AVFormatContext *s, AVIOContext *pb, AVPacket *pk
//printf("PacketLeftSize:%d Pad:%d Pos:%"PRId64"\n", asf->packet_size_left, asf->packet_padsize, avio_tell(pb));
assert(ret>=0);
/* fail safe */
avio_seek(pb, ret, SEEK_CUR);
avio_skip(pb, ret);
asf->packet_pos= avio_tell(pb);
if (asf->data_object_size != (uint64_t)-1 &&
@ -914,7 +914,7 @@ static int ff_asf_parse_packet(AVFormatContext *s, AVIOContext *pb, AVPacket *pk
) {
asf->packet_time_start = 0;
/* unhandled packet (should not happen) */
avio_seek(pb, asf->packet_frag_size, SEEK_CUR);
avio_skip(pb, asf->packet_frag_size);
asf->packet_size_left -= asf->packet_frag_size;
if(asf->stream_index < 0)
av_log(s, AV_LOG_ERROR, "ff asf skip %d (unknown stream)\n", asf->packet_frag_size);
@ -934,7 +934,7 @@ static int ff_asf_parse_packet(AVFormatContext *s, AVIOContext *pb, AVPacket *pk
if (asf->packet_multi_size < asf->packet_obj_size)
{
asf->packet_time_start = 0;
avio_seek(pb, asf->packet_multi_size, SEEK_CUR);
avio_skip(pb, asf->packet_multi_size);
asf->packet_size_left -= asf->packet_multi_size;
continue;
}
@ -1199,7 +1199,7 @@ static void asf_build_simple_index(AVFormatContext *s, int stream_index)
avio_seek(s->pb, current_pos, SEEK_SET);
return;
}
avio_seek(s->pb, gsize-24, SEEK_CUR);
avio_skip(s->pb, gsize-24);
ff_get_guid(s->pb, &g);
}

2
libavformat/au.c
View File

@ -147,7 +147,7 @@ static int au_read_header(AVFormatContext *s,
if (size >= 24) {
/* skip unused data */
avio_seek(pb, size - 24, SEEK_CUR);
avio_skip(pb, size - 24);
}
/* now we are ready: build format streams */

48
libavformat/avidec.c
View File

@ -321,12 +321,12 @@ static void avi_read_nikon(AVFormatContext *s, uint64_t end)
}
if (name)
av_metadata_set2(&s->metadata, name, buffer, 0);
avio_seek(s->pb, size, SEEK_CUR);
avio_skip(s->pb, size);
}
break;
}
default:
avio_seek(s->pb, size, SEEK_CUR);
avio_skip(s->pb, size);
break;
}
}
@ -392,13 +392,13 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap)
unsigned char date[64] = {0};
size += (size & 1);
size -= avio_read(pb, date, FFMIN(size, sizeof(date)-1));
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
avi_metadata_creation_time(&s->metadata, date);
break;
}
case MKTAG('d', 'm', 'l', 'h'):
avi->is_odml = 1;
avio_seek(pb, size + (size & 1), SEEK_CUR);
avio_skip(pb, size + (size & 1));
break;
case MKTAG('a', 'm', 'v', 'h'):
amv_file_format=1;
@ -410,13 +410,13 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap)
avio_rl32(pb);
avi->non_interleaved |= avio_rl32(pb) & AVIF_MUSTUSEINDEX;
avio_seek(pb, 2 * 4, SEEK_CUR);
avio_skip(pb, 2 * 4);
avio_rl32(pb);
avio_rl32(pb);
avih_width=avio_rl32(pb);
avih_height=avio_rl32(pb);
avio_seek(pb, size - 10 * 4, SEEK_CUR);
avio_skip(pb, size - 10 * 4);
break;
case MKTAG('s', 't', 'r', 'h'):
/* stream header */
@ -425,7 +425,7 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap)
handler = avio_rl32(pb); /* codec tag */
if(tag1 == MKTAG('p', 'a', 'd', 's')){
avio_seek(pb, size - 8, SEEK_CUR);
avio_skip(pb, size - 8);
break;
}else{
stream_index++;
@ -469,10 +469,10 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap)
goto fail;
}
s->streams[0]->priv_data = ast;
avio_seek(pb, 3 * 4, SEEK_CUR);
avio_skip(pb, 3 * 4);
ast->scale = avio_rl32(pb);
ast->rate = avio_rl32(pb);
avio_seek(pb, 4, SEEK_CUR); /* start time */
avio_skip(pb, 4); /* start time */
dv_dur = avio_rl32(pb);
if (ast->scale > 0 && ast->rate > 0 && dv_dur > 0) {
@ -485,7 +485,7 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap)
*/
stream_index = s->nb_streams - 1;
avio_seek(pb, size - 9*4, SEEK_CUR);
avio_skip(pb, size - 9*4);
break;
}
@ -542,12 +542,12 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap)
if(ast->sample_size == 0)
st->duration = st->nb_frames;
ast->frame_offset= ast->cum_len;
avio_seek(pb, size - 12 * 4, SEEK_CUR);
avio_skip(pb, size - 12 * 4);
break;
case MKTAG('s', 't', 'r', 'f'):
/* stream header */
if (stream_index >= (unsigned)s->nb_streams || avi->dv_demux) {
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
} else {
uint64_t cur_pos = avio_tell(pb);
if (cur_pos < list_end)
@ -560,7 +560,7 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap)
st->codec->height=avih_height;
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->codec->codec_id = CODEC_ID_AMV;
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
break;
}
tag1 = ff_get_bmp_header(pb, st);
@ -620,7 +620,7 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap)
}
st->codec->height= FFABS(st->codec->height);
// avio_seek(pb, size - 5 * 4, SEEK_CUR);
// avio_skip(pb, size - 5 * 4);
break;
case AVMEDIA_TYPE_AUDIO:
ff_get_wav_header(pb, st->codec, size);
@ -630,7 +630,7 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap)
ast->sample_size= st->codec->block_align;
}
if (size&1) /* 2-aligned (fix for Stargate SG-1 - 3x18 - Shades of Grey.avi) */
avio_seek(pb, 1, SEEK_CUR);
avio_skip(pb, 1);
/* Force parsing as several audio frames can be in
* one packet and timestamps refer to packet start. */
st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS;
@ -658,7 +658,7 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap)
st->codec->codec_type = AVMEDIA_TYPE_DATA;
st->codec->codec_id= CODEC_ID_NONE;
st->codec->codec_tag= 0;
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
break;
}
}
@ -693,7 +693,7 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap)
}
size -= 9*4;
}
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
break;
case MKTAG('s', 't', 'r', 'n'):
if(s->nb_streams){
@ -710,7 +710,7 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap)
}
/* skip tag */
size += (size & 1);
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
break;
}
}
@ -762,7 +762,7 @@ static int read_gab2_sub(AVStream *st, AVPacket *pkt) {
goto error;
ret = avio_get_str16le(pb, desc_len, desc, sizeof(desc));
avio_seek(pb, desc_len - ret, SEEK_CUR);
avio_skip(pb, desc_len - ret);
if (*desc)
av_metadata_set2(&st->metadata, "title", desc, 0);
@ -1008,14 +1008,14 @@ resync:
//parse JUNK
||(d[0] == 'J' && d[1] == 'U' && d[2] == 'N' && d[3] == 'K')
||(d[0] == 'i' && d[1] == 'd' && d[2] == 'x' && d[3] == '1')){
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
//av_log(s, AV_LOG_DEBUG, "SKIP\n");
goto resync;
}
//parse stray LIST
if(d[0] == 'L' && d[1] == 'I' && d[2] == 'S' && d[3] == 'T'){
avio_seek(pb, 4, SEEK_CUR);
avio_skip(pb, 4);
goto resync;
}
@ -1026,7 +1026,7 @@ resync:
//detect ##ix chunk and skip
if(d[2] == 'i' && d[3] == 'x' && n < s->nb_streams){
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
goto resync;
}
@ -1060,7 +1060,7 @@ resync:
/*|| (st->discard >= AVDISCARD_NONKEY && !(pkt->flags & AV_PKT_FLAG_KEY))*/ //FIXME needs a little reordering
|| st->discard >= AVDISCARD_ALL){
ast->frame_offset += get_duration(ast, size);
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
goto resync;
}
@ -1225,7 +1225,7 @@ static int avi_load_index(AVFormatContext *s)
default:
skip:
size += (size & 1);
if (avio_seek(pb, size, SEEK_CUR) < 0)
if (avio_skip(pb, size) < 0)
goto the_end; // something is wrong here
break;
}

6
libavformat/avienc.c
View File

@ -444,9 +444,9 @@ static int avi_write_ix(AVFormatContext *s)
/* Updating one entry in the AVI OpenDML master index */
avio_seek(pb, avist->indexes.indx_start - 8, SEEK_SET);
ffio_wfourcc(pb, "indx"); /* enabling this entry */
avio_seek(pb, 8, SEEK_CUR);
avio_skip(pb, 8);
avio_wl32(pb, avi->riff_id); /* nEntriesInUse */
avio_seek(pb, 16*avi->riff_id, SEEK_CUR);
avio_skip(pb, 16*avi->riff_id);
avio_wl64(pb, ix); /* qwOffset */
avio_wl32(pb, pos - ix); /* dwSize */
avio_wl32(pb, avist->indexes.entry); /* dwDuration */
@ -603,7 +603,7 @@ static int avi_write_trailer(AVFormatContext *s)
file_size = avio_tell(pb);
avio_seek(pb, avi->odml_list - 8, SEEK_SET);
ffio_wfourcc(pb, "LIST"); /* Making this AVI OpenDML one */
avio_seek(pb, 16, SEEK_CUR);
avio_skip(pb, 16);
for (n=nb_frames=0;n<s->nb_streams;n++) {
AVCodecContext *stream = s->streams[n]->codec;

4
libavformat/avs.c
View File

@ -61,7 +61,7 @@ static int avs_read_header(AVFormatContext * s, AVFormatParameters * ap)
s->ctx_flags |= AVFMTCTX_NOHEADER;
avio_seek(s->pb, 4, SEEK_CUR);
avio_skip(s->pb, 4);
avs->width = avio_rl16(s->pb);
avs->height = avio_rl16(s->pb);
avs->bits_per_sample = avio_rl16(s->pb);
@ -204,7 +204,7 @@ static int avs_read_packet(AVFormatContext * s, AVPacket * pkt)
break;
default:
avio_seek(s->pb, size - 4, SEEK_CUR);
avio_skip(s->pb, size - 4);
}
}
}

2
libavformat/bethsoftvid.c
View File

@ -67,7 +67,7 @@ static int vid_read_header(AVFormatContext *s,
* bytes: 'V' 'I' 'D'
* int16s: always_512, nframes, width, height, delay, always_14
*/
avio_seek(pb, 5, SEEK_CUR);
avio_skip(pb, 5);
vid->nframes = avio_rl16(pb);
stream = av_new_stream(s, 0);

6
libavformat/bfi.c
View File

@ -65,19 +65,19 @@ static int bfi_read_header(AVFormatContext * s, AVFormatParameters * ap)
return AVERROR(ENOMEM);
/* Set the total number of frames. */
avio_seek(pb, 8, SEEK_CUR);
avio_skip(pb, 8);
chunk_header = avio_rl32(pb);
bfi->nframes = avio_rl32(pb);
avio_rl32(pb);
avio_rl32(pb);
avio_rl32(pb);
fps = avio_rl32(pb);
avio_seek(pb, 12, SEEK_CUR);
avio_skip(pb, 12);
vstream->codec->width = avio_rl32(pb);
vstream->codec->height = avio_rl32(pb);
/*Load the palette to extradata */
avio_seek(pb, 8, SEEK_CUR);
avio_skip(pb, 8);
vstream->codec->extradata = av_malloc(768);
vstream->codec->extradata_size = 768;
avio_read(pb, vstream->codec->extradata,

8
libavformat/bink.c
View File

@ -98,7 +98,7 @@ static int read_header(AVFormatContext *s, AVFormatParameters *ap)
return AVERROR(EIO);
}
avio_seek(pb, 4, SEEK_CUR);
avio_skip(pb, 4);
vst->codec->width = avio_rl32(pb);
vst->codec->height = avio_rl32(pb);
@ -127,7 +127,7 @@ static int read_header(AVFormatContext *s, AVFormatParameters *ap)
}
if (bink->num_audio_tracks) {
avio_seek(pb, 4 * bink->num_audio_tracks, SEEK_CUR);
avio_skip(pb, 4 * bink->num_audio_tracks);
for (i = 0; i < bink->num_audio_tracks; i++) {
ast = av_new_stream(s, 1);
@ -169,7 +169,7 @@ static int read_header(AVFormatContext *s, AVFormatParameters *ap)
keyframe ? AVINDEX_KEYFRAME : 0);
}
avio_seek(pb, 4, SEEK_CUR);
avio_skip(pb, 4);
bink->current_track = -1;
return 0;
@ -225,7 +225,7 @@ static int read_packet(AVFormatContext *s, AVPacket *pkt)
AV_RL32(pkt->data) / (2 * s->streams[bink->current_track]->codec->channels);
return 0;
} else {
avio_seek(pb, audio_size, SEEK_CUR);
avio_skip(pb, audio_size);
}
}

2
libavformat/c93.c
View File

@ -122,7 +122,7 @@ static int read_packet(AVFormatContext *s, AVPacket *pkt)
return AVERROR(ENOMEM);
c93->audio->codec->codec_type = AVMEDIA_TYPE_AUDIO;
}
avio_seek(pb, 26, SEEK_CUR); /* VOC header */
avio_skip(pb, 26); /* VOC header */
ret = voc_get_packet(s, pkt, c93->audio, datasize - 26);
if (ret > 0) {
pkt->stream_index = 1;

16
libavformat/cafdec.c
View File

@ -114,22 +114,22 @@ static int read_kuki_chunk(AVFormatContext *s, int64_t size)
av_log(s, AV_LOG_ERROR, "invalid AAC magic cookie\n");
return AVERROR_INVALIDDATA;
}
avio_seek(pb, skip, SEEK_CUR);
avio_skip(pb, skip);
} else if (st->codec->codec_id == CODEC_ID_ALAC) {
#define ALAC_PREAMBLE 12
#define ALAC_HEADER 36
if (size < ALAC_PREAMBLE + ALAC_HEADER) {
av_log(s, AV_LOG_ERROR, "invalid ALAC magic cookie\n");
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
return AVERROR_INVALIDDATA;
}
avio_seek(pb, ALAC_PREAMBLE, SEEK_CUR);
avio_skip(pb, ALAC_PREAMBLE);
st->codec->extradata = av_mallocz(ALAC_HEADER + FF_INPUT_BUFFER_PADDING_SIZE);
if (!st->codec->extradata)
return AVERROR(ENOMEM);
avio_read(pb, st->codec->extradata, ALAC_HEADER);
st->codec->extradata_size = ALAC_HEADER;
avio_seek(pb, size - ALAC_PREAMBLE - ALAC_HEADER, SEEK_CUR);
avio_skip(pb, size - ALAC_PREAMBLE - ALAC_HEADER);
} else {
st->codec->extradata = av_mallocz(size + FF_INPUT_BUFFER_PADDING_SIZE);
if (!st->codec->extradata)
@ -201,7 +201,7 @@ static int read_header(AVFormatContext *s,
int found_data, ret;
int64_t size;
avio_seek(pb, 8, SEEK_CUR); /* magic, version, file flags */
avio_skip(pb, 8); /* magic, version, file flags */
/* audio description chunk */
if (avio_rb32(pb) != MKBETAG('d','e','s','c')) {
@ -233,11 +233,11 @@ static int read_header(AVFormatContext *s,
switch (tag) {
case MKBETAG('d','a','t','a'):
avio_seek(pb, 4, SEEK_CUR); /* edit count */
avio_skip(pb, 4); /* edit count */
caf->data_start = avio_tell(pb);
caf->data_size = size < 0 ? -1 : size - 4;
if (caf->data_size > 0 && !url_is_streamed(pb))
avio_seek(pb, caf->data_size, SEEK_CUR);
avio_skip(pb, caf->data_size);
found_data = 1;
break;
@ -265,7 +265,7 @@ static int read_header(AVFormatContext *s,
case MKBETAG('f','r','e','e'):
if (size < 0)
return AVERROR_INVALIDDATA;
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
break;
}
}

4
libavformat/dxa.c
View File

@ -96,7 +96,7 @@ static int dxa_read_header(AVFormatContext *s, AVFormatParameters *ap)
c->has_sound = 1;
size = avio_rb32(pb);
c->vidpos = avio_tell(pb) + size;
avio_seek(pb, 16, SEEK_CUR);
avio_skip(pb, 16);
fsize = avio_rl32(pb);
ast = av_new_stream(s, 0);
@ -108,7 +108,7 @@ static int dxa_read_header(AVFormatContext *s, AVFormatParameters *ap)
tag = avio_rl32(pb);
fsize = avio_rl32(pb);
if(tag == MKTAG('d', 'a', 't', 'a')) break;
avio_seek(pb, fsize, SEEK_CUR);
avio_skip(pb, fsize);
}
c->bpc = (fsize + c->frames - 1) / c->frames;
if(ast->codec->block_align)

2
libavformat/eacdata.c
View File

@ -62,7 +62,7 @@ static int cdata_read_header(AVFormatContext *s, AVFormatParameters *ap)
};
sample_rate = avio_rb16(pb);
avio_seek(pb, 12, SEEK_CUR);
avio_skip(pb, 12);
st = av_new_stream(s, 0);
if (!st)

18
libavformat/electronicarts.c
View File

@ -222,7 +222,7 @@ static int process_audio_header_eacs(AVFormatContext *s)
ea->bytes = avio_r8(pb); /* 1=8-bit, 2=16-bit */
ea->num_channels = avio_r8(pb);
compression_type = avio_r8(pb);
avio_seek(pb, 13, SEEK_CUR);
avio_skip(pb, 13);
switch (compression_type) {
case 0:
@ -261,7 +261,7 @@ static int process_video_header_mdec(AVFormatContext *s)
{
EaDemuxContext *ea = s->priv_data;
AVIOContext *pb = s->pb;
avio_seek(pb, 4, SEEK_CUR);
avio_skip(pb, 4);
ea->width = avio_rl16(pb);
ea->height = avio_rl16(pb);
ea->time_base = (AVRational){1,15};
@ -274,7 +274,7 @@ static int process_video_header_vp6(AVFormatContext *s)
EaDemuxContext *ea = s->priv_data;
AVIOContext *pb = s->pb;
avio_seek(pb, 16, SEEK_CUR);
avio_skip(pb, 16);
ea->time_base.den = avio_rl32(pb);
ea->time_base.num = avio_rl32(pb);
ea->video_codec = CODEC_ID_VP6;
@ -316,7 +316,7 @@ static int process_ea_header(AVFormatContext *s) {
case SHEN_TAG :
blockid = avio_rl32(pb);
if (blockid == GSTR_TAG) {
avio_seek(pb, 4, SEEK_CUR);
avio_skip(pb, 4);
} else if ((blockid & 0xFFFF)!=PT00_TAG) {
av_log (s, AV_LOG_ERROR, "unknown SCHl headerid\n");
return 0;
@ -474,19 +474,19 @@ static int ea_read_packet(AVFormatContext *s,
/* audio data */
case ISNh_TAG:
/* header chunk also contains data; skip over the header portion*/
avio_seek(pb, 32, SEEK_CUR);
avio_skip(pb, 32);
chunk_size -= 32;
case ISNd_TAG:
case SCDl_TAG:
case SNDC_TAG:
case SDEN_TAG:
if (!ea->audio_codec) {
avio_seek(pb, chunk_size, SEEK_CUR);
avio_skip(pb, chunk_size);
break;
} else if (ea->audio_codec == CODEC_ID_PCM_S16LE_PLANAR ||
ea->audio_codec == CODEC_ID_MP3) {
num_samples = avio_rl32(pb);
avio_seek(pb, 8, SEEK_CUR);
avio_skip(pb, 8);
chunk_size -= 12;
}
ret = av_get_packet(pb, pkt, chunk_size);
@ -541,7 +541,7 @@ static int ea_read_packet(AVFormatContext *s,
goto get_video_packet;
case mTCD_TAG:
avio_seek(pb, 8, SEEK_CUR); // skip ea dct header
avio_skip(pb, 8); // skip ea dct header
chunk_size -= 8;
goto get_video_packet;
@ -560,7 +560,7 @@ get_video_packet:
break;
default:
avio_seek(pb, chunk_size, SEEK_CUR);
avio_skip(pb, chunk_size);
break;
}
}

2
libavformat/ffmdec.c
View File

@ -187,7 +187,7 @@ static int64_t get_dts(AVFormatContext *s, int64_t pos)
int64_t dts;
ffm_seek1(s, pos);
avio_seek(pb, 4, SEEK_CUR);
avio_skip(pb, 4);
dts = avio_rb64(pb);
#ifdef DEBUG_SEEK
av_log(s, AV_LOG_DEBUG, "dts=%0.6f\n", dts / 1000000.0);

4
libavformat/filmstripdec.c
View File

@ -59,7 +59,7 @@ static int read_header(AVFormatContext *s,
return AVERROR_INVALIDDATA;
}
avio_seek(pb, 2, SEEK_CUR);
avio_skip(pb, 2);
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->codec->codec_id = CODEC_ID_RAWVIDEO;
st->codec->pix_fmt = PIX_FMT_RGBA;
@ -84,7 +84,7 @@ static int read_packet(AVFormatContext *s,
return AVERROR(EIO);
pkt->dts = avio_tell(s->pb) / (st->codec->width * (st->codec->height + film->leading) * 4);
pkt->size = av_get_packet(s->pb, pkt, st->codec->width * st->codec->height * 4);
avio_seek(s->pb, st->codec->width * film->leading * 4, SEEK_CUR);
avio_skip(s->pb, st->codec->width * film->leading * 4);
if (pkt->size < 0)
return pkt->size;
pkt->flags |= AV_PKT_FLAG_KEY;

2
libavformat/flacdec.c
View File

@ -65,7 +65,7 @@ static int flac_read_header(AVFormatContext *s,
break;
/* skip metadata block for unsupported types */
default:
ret = avio_seek(s->pb, metadata_size, SEEK_CUR);
ret = avio_skip(s->pb, metadata_size);
if (ret < 0)
return ret;
}

4
libavformat/flic.c
View File

@ -239,7 +239,7 @@ static int flic_read_packet(AVFormatContext *s,
}
/* skip useless 10B sub-header (yes, it's not accounted for in the chunk header) */
avio_seek(pb, 10, SEEK_CUR);
avio_skip(pb, 10);
pkt->stream_index = flic->audio_stream_index;
pkt->pos = avio_tell(pb);
@ -253,7 +253,7 @@ static int flic_read_packet(AVFormatContext *s,
packet_read = 1;
} else {
/* not interested in this chunk */
avio_seek(pb, size - 6, SEEK_CUR);
avio_skip(pb, size - 6);
}
}

18
libavformat/flvdec.c
View File

@ -113,7 +113,7 @@ static int flv_set_video_codec(AVFormatContext *s, AVStream *vstream, int flv_co
static int amf_get_string(AVIOContext *ioc, char *buffer, int buffsize) {
int length = avio_rb16(ioc);
if(length >= buffsize) {
avio_seek(ioc, length, SEEK_CUR);
avio_skip(ioc, length);
return -1;
}
@ -149,7 +149,7 @@ static int amf_parse_object(AVFormatContext *s, AVStream *astream, AVStream *vst
unsigned int keylen;
while(avio_tell(ioc) < max_pos - 2 && (keylen = avio_rb16(ioc))) {
avio_seek(ioc, keylen, SEEK_CUR); //skip key string
avio_skip(ioc, keylen); //skip key string
if(amf_parse_object(s, NULL, NULL, NULL, max_pos, depth + 1) < 0)
return -1; //if we couldn't skip, bomb out.
}
@ -162,7 +162,7 @@ static int amf_parse_object(AVFormatContext *s, AVStream *astream, AVStream *vst
case AMF_DATA_TYPE_UNSUPPORTED:
break; //these take up no additional space
case AMF_DATA_TYPE_MIXEDARRAY:
avio_seek(ioc, 4, SEEK_CUR); //skip 32-bit max array index
avio_skip(ioc, 4); //skip 32-bit max array index
while(avio_tell(ioc) < max_pos - 2 && amf_get_string(ioc, str_val, sizeof(str_val)) > 0) {
//this is the only case in which we would want a nested parse to not skip over the object
if(amf_parse_object(s, astream, vstream, str_val, max_pos, depth + 1) < 0)
@ -182,7 +182,7 @@ static int amf_parse_object(AVFormatContext *s, AVStream *astream, AVStream *vst
}
break;
case AMF_DATA_TYPE_DATE:
avio_seek(ioc, 8 + 2, SEEK_CUR); //timestamp (double) and UTC offset (int16)
avio_skip(ioc, 8 + 2); //timestamp (double) and UTC offset (int16)
break;
default: //unsupported type, we couldn't skip
return -1;
@ -254,7 +254,7 @@ static int flv_read_header(AVFormatContext *s,
{
int offset, flags;
avio_seek(s->pb, 4, SEEK_CUR);
avio_skip(s->pb, 4);
flags = avio_r8(s->pb);
/* old flvtool cleared this field */
/* FIXME: better fix needed */
@ -278,7 +278,7 @@ static int flv_read_header(AVFormatContext *s,
offset = avio_rb32(s->pb);
avio_seek(s->pb, offset, SEEK_SET);
avio_seek(s->pb, 4, SEEK_CUR);
avio_skip(s->pb, 4);
s->start_time = 0;
@ -304,7 +304,7 @@ static int flv_read_packet(AVFormatContext *s, AVPacket *pkt)
int64_t dts, pts = AV_NOPTS_VALUE;
AVStream *st = NULL;
for(;;avio_seek(s->pb, 4, SEEK_CUR)){ /* pkt size is repeated at end. skip it */
for(;;avio_skip(s->pb, 4)){ /* pkt size is repeated at end. skip it */
pos = avio_tell(s->pb);
type = avio_r8(s->pb);
size = avio_rb24(s->pb);
@ -313,7 +313,7 @@ static int flv_read_packet(AVFormatContext *s, AVPacket *pkt)
// av_log(s, AV_LOG_DEBUG, "type:%d, size:%d, dts:%d\n", type, size, dts);
if (s->pb->eof_reached)
return AVERROR_EOF;
avio_seek(s->pb, 3, SEEK_CUR); /* stream id, always 0 */
avio_skip(s->pb, 3); /* stream id, always 0 */
flags = 0;
if(size == 0)
@ -454,7 +454,7 @@ static int flv_read_packet(AVFormatContext *s, AVPacket *pkt)
pkt->flags |= AV_PKT_FLAG_KEY;
leave:
avio_seek(s->pb, 4, SEEK_CUR);
avio_skip(s->pb, 4);
return ret;
}

4
libavformat/flvenc.c
View File

@ -291,7 +291,7 @@ static int flv_write_header(AVFormatContext *s)
data_size= avio_tell(pb) - metadata_size_pos - 10;
avio_seek(pb, metadata_size_pos, SEEK_SET);
avio_wb24(pb, data_size);
avio_seek(pb, data_size + 10 - 3, SEEK_CUR);
avio_skip(pb, data_size + 10 - 3);
avio_wb32(pb, data_size + 11);
for (i = 0; i < s->nb_streams; i++) {
@ -318,7 +318,7 @@ static int flv_write_header(AVFormatContext *s)
data_size = avio_tell(pb) - pos;
avio_seek(pb, -data_size - 10, SEEK_CUR);
avio_wb24(pb, data_size);
avio_seek(pb, data_size + 10 - 3, SEEK_CUR);
avio_skip(pb, data_size + 10 - 3);
avio_wb32(pb, data_size + 11); // previous tag size
}
}

28
libavformat/gxf.c
View File

@ -174,7 +174,7 @@ static void gxf_material_tags(AVIOContext *pb, int *len, struct gxf_stream_info
else if (tag == MAT_LAST_FIELD)
si->last_field = value;
} else
avio_seek(pb, tlen, SEEK_CUR);
avio_skip(pb, tlen);
}
}
@ -223,7 +223,7 @@ static void gxf_track_tags(AVIOContext *pb, int *len, struct gxf_stream_info *si
else if (tag == TRACK_FPF && (value == 1 || value == 2))
si->fields_per_frame = value;
} else
avio_seek(pb, tlen, SEEK_CUR);
avio_skip(pb, tlen);
}
}
@ -238,7 +238,7 @@ static void gxf_read_index(AVFormatContext *s, int pkt_len) {
int i;
pkt_len -= 8;
if (s->flags & AVFMT_FLAG_IGNIDX) {
avio_seek(pb, pkt_len, SEEK_CUR);
avio_skip(pb, pkt_len);
return;
}
if (map_cnt > 1000) {
@ -247,7 +247,7 @@ static void gxf_read_index(AVFormatContext *s, int pkt_len) {
}
if (pkt_len < 4 * map_cnt) {
av_log(s, AV_LOG_ERROR, "invalid index length\n");
avio_seek(pb, pkt_len, SEEK_CUR);
avio_skip(pb, pkt_len);
return;
}
pkt_len -= 4 * map_cnt;
@ -255,7 +255,7 @@ static void gxf_read_index(AVFormatContext *s, int pkt_len) {
for (i = 0; i < map_cnt; i++)
av_add_index_entry(st, (uint64_t)avio_rl32(pb) * 1024,
i * (uint64_t)fields_per_map + 1, 0, 0, 0);
avio_seek(pb, pkt_len, SEEK_CUR);
avio_skip(pb, pkt_len);
}
static int gxf_header(AVFormatContext *s, AVFormatParameters *ap) {
@ -283,7 +283,7 @@ static int gxf_header(AVFormatContext *s, AVFormatParameters *ap) {
}
map_len -= len;
gxf_material_tags(pb, &len, &si);
avio_seek(pb, len, SEEK_CUR);
avio_skip(pb, len);
map_len -= 2;
len = avio_rb16(pb); // length of track description
if (len > map_len) {
@ -301,7 +301,7 @@ static int gxf_header(AVFormatContext *s, AVFormatParameters *ap) {
track_len = avio_rb16(pb);
len -= track_len;
gxf_track_tags(pb, &track_len, &si);
avio_seek(pb, track_len, SEEK_CUR);
avio_skip(pb, track_len);
if (!(track_type & 0x80)) {
av_log(s, AV_LOG_ERROR, "invalid track type %x\n", track_type);
continue;
@ -326,7 +326,7 @@ static int gxf_header(AVFormatContext *s, AVFormatParameters *ap) {
if (len < 0)
av_log(s, AV_LOG_ERROR, "invalid track description length specified\n");
if (map_len)
avio_seek(pb, map_len, SEEK_CUR);
avio_skip(pb, map_len);
if (!parse_packet_header(pb, &pkt_type, &len)) {
av_log(s, AV_LOG_ERROR, "sync lost in header\n");
return -1;
@ -342,8 +342,8 @@ static int gxf_header(AVFormatContext *s, AVFormatParameters *ap) {
if (len >= 0x39) {
AVRational fps;
len -= 0x39;
avio_seek(pb, 5, SEEK_CUR); // preamble
avio_seek(pb, 0x30, SEEK_CUR); // payload description
avio_skip(pb, 5); // preamble
avio_skip(pb, 0x30); // payload description
fps = fps_umf2avr(avio_rl32(pb));
if (!main_timebase.num || !main_timebase.den) {
// this may not always be correct, but simply the best we can get
@ -354,7 +354,7 @@ static int gxf_header(AVFormatContext *s, AVFormatParameters *ap) {
av_log(s, AV_LOG_INFO, "UMF packet too short\n");
} else
av_log(s, AV_LOG_INFO, "UMF packet missing\n");
avio_seek(pb, len, SEEK_CUR);
avio_skip(pb, len);
// set a fallback value, 60000/1001 is specified for audio-only files
// so use that regardless of why we do not know the video frame rate.
if (!main_timebase.num || !main_timebase.den)
@ -437,7 +437,7 @@ static int gxf_packet(AVFormatContext *s, AVPacket *pkt) {
continue;
}
if (pkt_type != PKT_MEDIA) {
avio_seek(pb, pkt_len, SEEK_CUR);
avio_skip(pb, pkt_len);
continue;
}
if (pkt_len < 16) {
@ -462,7 +462,7 @@ static int gxf_packet(AVFormatContext *s, AVPacket *pkt) {
int last = field_info & 0xffff; // last is exclusive
int bps = av_get_bits_per_sample(st->codec->codec_id)>>3;
if (first <= last && last*bps <= pkt_len) {
avio_seek(pb, first*bps, SEEK_CUR);
avio_skip(pb, first*bps);
skip = pkt_len - last*bps;
pkt_len = (last-first)*bps;
} else
@ -470,7 +470,7 @@ static int gxf_packet(AVFormatContext *s, AVPacket *pkt) {
}
ret = av_get_packet(pb, pkt, pkt_len);
if (skip)
avio_seek(pb, skip, SEEK_CUR);
avio_skip(pb, skip);
pkt->stream_index = stream_index;
pkt->dts = field_nr;
return ret;

10
libavformat/id3v2.c
View File

@ -217,7 +217,7 @@ static void ff_id3v2_parse(AVFormatContext *s, int len, uint8_t version, uint8_t
unsync = flags & 0x80;
if (isv34 && flags & 0x40) /* Extended header present, just skip over it */
avio_seek(s->pb, get_size(s->pb, 4), SEEK_CUR);
avio_skip(s->pb, get_size(s->pb, 4));
while (len >= taghdrlen) {
unsigned int tflags;
@ -251,7 +251,7 @@ static void ff_id3v2_parse(AVFormatContext *s, int len, uint8_t version, uint8_t
if (tflags & (ID3v2_FLAG_ENCRYPTION | ID3v2_FLAG_COMPRESSION)) {
av_log(s, AV_LOG_WARNING, "Skipping encrypted/compressed ID3v2 frame %s.\n", tag);
avio_seek(s->pb, tlen, SEEK_CUR);
avio_skip(s->pb, tlen);
} else if (tag[0] == 'T') {
if (unsync || tunsync) {
int i, j;
@ -272,7 +272,7 @@ static void ff_id3v2_parse(AVFormatContext *s, int len, uint8_t version, uint8_t
else if (!tag[0]) {
if (tag[1])
av_log(s, AV_LOG_WARNING, "invalid frame id, assuming padding");
avio_seek(s->pb, tlen, SEEK_CUR);
avio_skip(s->pb, tlen);
break;
}
/* Skip to end of tag */
@ -281,10 +281,10 @@ static void ff_id3v2_parse(AVFormatContext *s, int len, uint8_t version, uint8_t
if (len > 0) {
/* Skip padding */
avio_seek(s->pb, len, SEEK_CUR);
avio_skip(s->pb, len);
}
if (version == 4 && flags & 0x10) /* Footer preset, always 10 bytes, skip over it */
avio_seek(s->pb, 10, SEEK_CUR);
avio_skip(s->pb, 10);
av_free(buffer);
return;

2
libavformat/idcin.c
View File

@ -257,7 +257,7 @@ static int idcin_read_packet(AVFormatContext *s,
chunk_size = avio_rl32(pb);
/* skip the number of decoded bytes (always equal to width * height) */
avio_seek(pb, 4, SEEK_CUR);
avio_skip(pb, 4);
chunk_size -= 4;
ret= av_get_packet(pb, pkt, chunk_size);
if (ret < 0)

4
libavformat/idroqdec.c
View File

@ -136,14 +136,14 @@ static int roq_read_packet(AVFormatContext *s,
break;
}
/* don't care about this chunk anymore */
avio_seek(pb, RoQ_CHUNK_PREAMBLE_SIZE, SEEK_CUR);
avio_skip(pb, RoQ_CHUNK_PREAMBLE_SIZE);
break;
case RoQ_QUAD_CODEBOOK:
/* packet needs to contain both this codebook and next VQ chunk */
codebook_offset = avio_tell(pb) - RoQ_CHUNK_PREAMBLE_SIZE;
codebook_size = chunk_size;
avio_seek(pb, codebook_size, SEEK_CUR);
avio_skip(pb, codebook_size);
if (avio_read(pb, preamble, RoQ_CHUNK_PREAMBLE_SIZE) !=
RoQ_CHUNK_PREAMBLE_SIZE)
return AVERROR(EIO);

14
libavformat/iff.c
View File

@ -134,7 +134,7 @@ static int iff_read_header(AVFormatContext *s,
return AVERROR(ENOMEM);
st->codec->channels = 1;
avio_seek(pb, 8, SEEK_CUR);
avio_skip(pb, 8);
// codec_tag used by ByteRun1 decoder to distinguish progressive (PBM) and interlaced (ILBM) content
st->codec->codec_tag = avio_rl32(pb);
@ -152,10 +152,10 @@ static int iff_read_header(AVFormatContext *s,
if (data_size < 14)
return AVERROR_INVALIDDATA;
avio_seek(pb, 12, SEEK_CUR);
avio_skip(pb, 12);
st->codec->sample_rate = avio_rb16(pb);
if (data_size >= 16) {
avio_seek(pb, 1, SEEK_CUR);
avio_skip(pb, 1);
compression = avio_r8(pb);
}
break;
@ -186,14 +186,14 @@ static int iff_read_header(AVFormatContext *s,
return AVERROR_INVALIDDATA;
st->codec->width = avio_rb16(pb);
st->codec->height = avio_rb16(pb);
avio_seek(pb, 4, SEEK_CUR); // x, y offset
avio_skip(pb, 4); // x, y offset
st->codec->bits_per_coded_sample = avio_r8(pb);
if (data_size >= 11) {
avio_seek(pb, 1, SEEK_CUR); // masking
avio_skip(pb, 1); // masking
compression = avio_r8(pb);
}
if (data_size >= 16) {
avio_seek(pb, 3, SEEK_CUR); // paddding, transparent
avio_skip(pb, 3); // paddding, transparent
st->sample_aspect_ratio.num = avio_r8(pb);
st->sample_aspect_ratio.den = avio_r8(pb);
}
@ -223,7 +223,7 @@ static int iff_read_header(AVFormatContext *s,
return res;
}
}
avio_seek(pb, data_size - (avio_tell(pb) - orig_pos) + (data_size & 1), SEEK_CUR);
avio_skip(pb, data_size - (avio_tell(pb) - orig_pos) + (data_size & 1));
}
avio_seek(pb, iff->body_pos, SEEK_SET);

6
libavformat/ingenientdec.c
View File

@ -35,11 +35,11 @@ static int ingenient_read_packet(AVFormatContext *s, AVPacket *pkt)
w = avio_rl16(s->pb);
h = avio_rl16(s->pb);
avio_seek(s->pb, 8, SEEK_CUR); // zero + size (padded?)
avio_seek(s->pb, 2, SEEK_CUR);
avio_skip(s->pb, 8); // zero + size (padded?)
avio_skip(s->pb, 2);
unk1 = avio_rl16(s->pb);
unk2 = avio_rl16(s->pb);
avio_seek(s->pb, 22, SEEK_CUR); // ASCII timestamp
avio_skip(s->pb, 22); // ASCII timestamp
av_log(s, AV_LOG_DEBUG, "Ingenient packet: size=%d, width=%d, height=%d, unk1=%d unk2=%d\n",
size, w, h, unk1, unk2);

24
libavformat/ipmovie.c
View File

@ -299,12 +299,12 @@ static int process_ipmovie_chunk(IPMVEContext *s, AVIOContext *pb,
case OPCODE_END_OF_STREAM:
debug_ipmovie("end of stream\n");
avio_seek(pb, opcode_size, SEEK_CUR);
avio_skip(pb, opcode_size);
break;
case OPCODE_END_OF_CHUNK:
debug_ipmovie("end of chunk\n");
avio_seek(pb, opcode_size, SEEK_CUR);
avio_skip(pb, opcode_size);
break;
case OPCODE_CREATE_TIMER:
@ -359,7 +359,7 @@ static int process_ipmovie_chunk(IPMVEContext *s, AVIOContext *pb,
case OPCODE_START_STOP_AUDIO:
debug_ipmovie("start/stop audio\n");
avio_seek(pb, opcode_size, SEEK_CUR);
avio_skip(pb, opcode_size);
break;
case OPCODE_INIT_VIDEO_BUFFERS:
@ -393,12 +393,12 @@ static int process_ipmovie_chunk(IPMVEContext *s, AVIOContext *pb,
case OPCODE_UNKNOWN_14:
case OPCODE_UNKNOWN_15:
debug_ipmovie("unknown (but documented) opcode %02X\n", opcode_type);
avio_seek(pb, opcode_size, SEEK_CUR);
avio_skip(pb, opcode_size);
break;
case OPCODE_SEND_BUFFER:
debug_ipmovie("send buffer\n");
avio_seek(pb, opcode_size, SEEK_CUR);
avio_skip(pb, opcode_size);
break;
case OPCODE_AUDIO_FRAME:
@ -407,22 +407,22 @@ static int process_ipmovie_chunk(IPMVEContext *s, AVIOContext *pb,
/* log position and move on for now */
s->audio_chunk_offset = avio_tell(pb);
s->audio_chunk_size = opcode_size;
avio_seek(pb, opcode_size, SEEK_CUR);
avio_skip(pb, opcode_size);
break;
case OPCODE_SILENCE_FRAME:
debug_ipmovie("silence frame\n");
avio_seek(pb, opcode_size, SEEK_CUR);
avio_skip(pb, opcode_size);
break;
case OPCODE_INIT_VIDEO_MODE:
debug_ipmovie("initialize video mode\n");
avio_seek(pb, opcode_size, SEEK_CUR);
avio_skip(pb, opcode_size);
break;
case OPCODE_CREATE_GRADIENT:
debug_ipmovie("create gradient\n");
avio_seek(pb, opcode_size, SEEK_CUR);
avio_skip(pb, opcode_size);
break;
case OPCODE_SET_PALETTE:
@ -464,7 +464,7 @@ static int process_ipmovie_chunk(IPMVEContext *s, AVIOContext *pb,
case OPCODE_SET_PALETTE_COMPRESSED:
debug_ipmovie("set palette compressed\n");
avio_seek(pb, opcode_size, SEEK_CUR);
avio_skip(pb, opcode_size);
break;
case OPCODE_SET_DECODING_MAP:
@ -473,7 +473,7 @@ static int process_ipmovie_chunk(IPMVEContext *s, AVIOContext *pb,
/* log position and move on for now */
s->decode_map_chunk_offset = avio_tell(pb);
s->decode_map_chunk_size = opcode_size;
avio_seek(pb, opcode_size, SEEK_CUR);
avio_skip(pb, opcode_size);
break;
case OPCODE_VIDEO_DATA:
@ -482,7 +482,7 @@ static int process_ipmovie_chunk(IPMVEContext *s, AVIOContext *pb,
/* log position and move on for now */
s->video_chunk_offset = avio_tell(pb);
s->video_chunk_size = opcode_size;
avio_seek(pb, opcode_size, SEEK_CUR);
avio_skip(pb, opcode_size);
break;
default:

2
libavformat/iv8.c
View File

@ -70,7 +70,7 @@ retry:
return -1;
if(type==258){
avio_seek(s->pb, size, SEEK_CUR);
avio_skip(s->pb, size);
goto retry;
}

2
libavformat/lmlm4.c
View File

@ -100,7 +100,7 @@ static int lmlm4_read_packet(AVFormatContext *s, AVPacket *pkt) {
if ((ret = av_get_packet(pb, pkt, frame_size)) <= 0)
return AVERROR(EIO);
avio_seek(pb, padding, SEEK_CUR);
avio_skip(pb, padding);
switch (frame_type) {
case LMLM4_I_FRAME:

6
libavformat/lxfdec.c
View File

@ -137,8 +137,8 @@ static int get_packet_header(AVFormatContext *s, uint8_t *header, uint32_t *form
case 0:
//video
//skip VBI data and metadata
avio_seek(pb, (int64_t)(uint32_t)AV_RL32(&header[44]) +
(int64_t)(uint32_t)AV_RL32(&header[52]), SEEK_CUR);
avio_skip(pb, (int64_t)(uint32_t)AV_RL32(&header[44]) +
(int64_t)(uint32_t)AV_RL32(&header[52]));
break;
case 1:
//audio
@ -255,7 +255,7 @@ static int lxf_read_header(AVFormatContext *s, AVFormatParameters *ap)
if (format == 1) {
//skip extended field data
avio_seek(s->pb, (uint32_t)AV_RL32(&header[40]), SEEK_CUR);
avio_skip(s->pb, (uint32_t)AV_RL32(&header[40]));
}
return 0;

6
libavformat/matroskadec.c
View File

@ -831,7 +831,7 @@ static int ebml_parse_elem(MatroskaDemuxContext *matroska,
return ebml_parse_nest(matroska, syntax->def.n, data);
case EBML_PASS: return ebml_parse_id(matroska, syntax->def.n, id, data);
case EBML_STOP: return 1;
default: return avio_seek(pb,length,SEEK_CUR)<0 ? AVERROR(EIO) : 0;
default: return avio_skip(pb,length)<0 ? AVERROR(EIO) : 0;
}
if (res == AVERROR_INVALIDDATA)
av_log(matroska->ctx, AV_LOG_ERROR, "Invalid element\n");
@ -1393,10 +1393,10 @@ static int matroska_read_header(AVFormatContext *s, AVFormatParameters *ap)
int flavor;
ffio_init_context(&b, track->codec_priv.data,track->codec_priv.size,
0, NULL, NULL, NULL, NULL);
avio_seek(&b, 22, SEEK_CUR);
avio_skip(&b, 22);
flavor = avio_rb16(&b);
track->audio.coded_framesize = avio_rb32(&b);
avio_seek(&b, 12, SEEK_CUR);
avio_skip(&b, 12);
track->audio.sub_packet_h = avio_rb16(&b);
track->audio.frame_size = avio_rb16(&b);
track->audio.sub_packet_size = avio_rb16(&b);

4
libavformat/mm.c
View File

@ -102,7 +102,7 @@ static int read_header(AVFormatContext *s,
avio_rl16(pb); /* ibm-pc video bios mode */
width = avio_rl16(pb);
height = avio_rl16(pb);
avio_seek(pb, length - 10, SEEK_CUR); /* unknown data */
avio_skip(pb, length - 10); /* unknown data */
/* video stream */
st = av_new_stream(s, 0);
@ -181,7 +181,7 @@ static int read_packet(AVFormatContext *s,
default :
av_log(s, AV_LOG_INFO, "unknown chunk type 0x%x\n", type);
avio_seek(pb, length, SEEK_CUR);
avio_skip(pb, length);
}
}

4
libavformat/mmf.c
View File

@ -195,7 +195,7 @@ static int mmf_read_header(AVFormatContext *s,
file_size = avio_rb32(pb);
/* Skip some unused chunks that may or may not be present */
for(;; avio_seek(pb, size, SEEK_CUR)) {
for(;; avio_skip(pb, size)) {
tag = avio_rl32(pb);
size = avio_rb32(pb);
if(tag == MKTAG('C','N','T','I')) continue;
@ -226,7 +226,7 @@ static int mmf_read_header(AVFormatContext *s,
avio_r8(pb); /* time base g */
/* Skip some unused chunks that may or may not be present */
for(;; avio_seek(pb, size, SEEK_CUR)) {
for(;; avio_skip(pb, size)) {
tag = avio_rl32(pb);
size = avio_rb32(pb);
if(tag == MKTAG('A','t','s','q')) continue;

36
libavformat/mov.c
View File

@ -296,7 +296,7 @@ static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
parse = mov_read_udta_string;
if (!parse) { /* skip leaf atoms data */
avio_seek(pb, a.size, SEEK_CUR);
avio_skip(pb, a.size);
} else {
int64_t start_pos = avio_tell(pb);
int64_t left;
@ -308,14 +308,14 @@ static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
return 0;
left = a.size - avio_tell(pb) + start_pos;
if (left > 0) /* skip garbage at atom end */
avio_seek(pb, left, SEEK_CUR);
avio_skip(pb, left);
}
total_size += a.size;
}
if (total_size < atom.size && atom.size < 0x7ffff)
avio_seek(pb, atom.size - total_size, SEEK_CUR);
avio_skip(pb, atom.size - total_size);
return 0;
}
@ -357,7 +357,7 @@ static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
uint16_t volume_len, len;
int16_t type;
avio_seek(pb, 10, SEEK_CUR);
avio_skip(pb, 10);
volume_len = avio_r8(pb);
volume_len = FFMIN(volume_len, 27);
@ -365,7 +365,7 @@ static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
dref->volume[volume_len] = 0;
av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
avio_seek(pb, 12, SEEK_CUR);
avio_skip(pb, 12);
len = avio_r8(pb);
len = FFMIN(len, 63);
@ -373,7 +373,7 @@ static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
dref->filename[len] = 0;
av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
avio_seek(pb, 16, SEEK_CUR);
avio_skip(pb, 16);
/* read next level up_from_alias/down_to_target */
dref->nlvl_from = avio_rb16(pb);
@ -381,7 +381,7 @@ static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
dref->nlvl_from, dref->nlvl_to);
avio_seek(pb, 16, SEEK_CUR);
avio_skip(pb, 16);
for (type = 0; type != -1 && avio_tell(pb) < next; ) {
type = avio_rb16(pb);
@ -416,7 +416,7 @@ static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
dref->dir[j] = '/';
av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
} else
avio_seek(pb, len, SEEK_CUR);
avio_skip(pb, len);
}
}
avio_seek(pb, next, SEEK_SET);
@ -663,9 +663,9 @@ static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
avio_rb16(pb); /* preferred volume */
avio_seek(pb, 10, SEEK_CUR); /* reserved */
avio_skip(pb, 10); /* reserved */
avio_seek(pb, 36, SEEK_CUR); /* display matrix */
avio_skip(pb, 36); /* display matrix */
avio_rb32(pb); /* preview time */
avio_rb32(pb); /* preview duration */
@ -782,7 +782,7 @@ static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
if (mov_read_default(c, pb, atom) < 0)
return -1;
} else
avio_seek(pb, atom.size, SEEK_CUR);
avio_skip(pb, atom.size);
return 0;
}
@ -833,7 +833,7 @@ static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
if (!st->codec->extradata)
return AVERROR(ENOMEM);
st->codec->extradata_size = atom.size - 40;
avio_seek(pb, 40, SEEK_CUR);
avio_skip(pb, 40);
avio_read(pb, st->codec->extradata, atom.size - 40);
return 0;
}
@ -945,7 +945,7 @@ int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
* in the MOV demuxer, patch welcome. */
multiple_stsd:
av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
avio_seek(pb, size - (avio_tell(pb) - start_pos), SEEK_CUR);
avio_skip(pb, size - (avio_tell(pb) - start_pos));
continue;
}
/* we cannot demux concatenated h264 streams because of different extradata */
@ -1003,7 +1003,7 @@ int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
len = 31;
mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
if (len < 31)
avio_seek(pb, 31 - len, SEEK_CUR);
avio_skip(pb, 31 - len);
/* codec_tag YV12 triggers an UV swap in rawdec.c */
if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
st->codec->codec_tag=MKTAG('I', '4', '2', '0');
@ -1174,7 +1174,7 @@ int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
st->codec->height = sc->height;
} else {
/* other codec type, just skip (rtp, mp4s, tmcd ...) */
avio_seek(pb, size - (avio_tell(pb) - start_pos), SEEK_CUR);
avio_skip(pb, size - (avio_tell(pb) - start_pos));
}
/* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
a.size = size - (avio_tell(pb) - start_pos);
@ -1182,7 +1182,7 @@ int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
if (mov_read_default(c, pb, a) < 0)
return -1;
} else if (a.size > 0)
avio_seek(pb, a.size, SEEK_CUR);
avio_skip(pb, a.size);
}
if(st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
@ -2078,13 +2078,13 @@ static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
if (atom.size < 8)
return 0; /* continue */
if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
avio_seek(pb, atom.size - 4, SEEK_CUR);
avio_skip(pb, atom.size - 4);
return 0;
}
atom.type = avio_rl32(pb);
atom.size -= 8;
if (atom.type != MKTAG('m','d','a','t')) {
avio_seek(pb, atom.size, SEEK_CUR);
avio_skip(pb, atom.size);
return 0;
}
err = mov_read_mdat(c, pb, atom);

2
libavformat/mp3dec.c
View File

@ -107,7 +107,7 @@ static int mp3_parse_vbr_tags(AVFormatContext *s, AVStream *st, int64_t base)
/* Check tag version */
if(avio_rb16(s->pb) == 1) {
/* skip delay and quality */
avio_seek(s->pb, 4, SEEK_CUR);
avio_skip(s->pb, 4);
frames = avio_rb32(s->pb);
size = avio_rb32(s->pb);
}

4
libavformat/mpc8.c
View File

@ -182,7 +182,7 @@ static void mpc8_handle_chunk(AVFormatContext *s, int tag, int64_t chunk_pos, in
avio_seek(pb, pos, SEEK_SET);
break;
default:
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
}
}
@ -212,7 +212,7 @@ static int mpc8_read_header(AVFormatContext *s, AVFormatParameters *ap)
return -1;
}
pos = avio_tell(pb);
avio_seek(pb, 4, SEEK_CUR); //CRC
avio_skip(pb, 4); //CRC
c->ver = avio_r8(pb);
if(c->ver != 8){
av_log(s, AV_LOG_ERROR, "Unknown stream version %d\n", c->ver);

18
libavformat/mpeg.c
View File

@ -212,7 +212,7 @@ static long mpegps_psm_parse(MpegDemuxContext *m, AVIOContext *pb)
ps_info_length = avio_rb16(pb);
/* skip program_stream_info */
avio_seek(pb, ps_info_length, SEEK_CUR);
avio_skip(pb, ps_info_length);
es_map_length = avio_rb16(pb);
/* at least one es available? */
@ -223,7 +223,7 @@ static long mpegps_psm_parse(MpegDemuxContext *m, AVIOContext *pb)
/* remember mapping from stream id to stream type */
m->psm_es_type[es_id] = type;
/* skip program_stream_info */
avio_seek(pb, es_info_length, SEEK_CUR);
avio_skip(pb, es_info_length);
es_map_length -= 4 + es_info_length;
}
avio_rb32(pb); /* crc32 */
@ -264,7 +264,7 @@ static int mpegps_read_pes_header(AVFormatContext *s,
if (startcode == SYSTEM_HEADER_START_CODE)
goto redo;
if (startcode == PADDING_STREAM) {
avio_seek(s->pb, avio_rb16(s->pb), SEEK_CUR);
avio_skip(s->pb, avio_rb16(s->pb));
goto redo;
}
if (startcode == PRIVATE_STREAM_2) {
@ -281,7 +281,7 @@ static int mpegps_read_pes_header(AVFormatContext *s,
}
m->sofdec -= !m->sofdec;
}
avio_seek(s->pb, len, SEEK_CUR);
avio_skip(s->pb, len);
goto redo;
}
if (startcode == PROGRAM_STREAM_MAP) {
@ -359,7 +359,7 @@ static int mpegps_read_pes_header(AVFormatContext *s,
av_log(s, AV_LOG_WARNING, "pes_ext %X is invalid\n", pes_ext);
pes_ext=skip=0;
}
avio_seek(s->pb, skip, SEEK_CUR);
avio_skip(s->pb, skip);
header_len -= skip;
if (pes_ext & 0x01) { /* PES extension 2 */
@ -375,7 +375,7 @@ static int mpegps_read_pes_header(AVFormatContext *s,
}
if(header_len < 0)
goto error_redo;
avio_seek(s->pb, header_len, SEEK_CUR);
avio_skip(s->pb, header_len);
}
else if( c!= 0xf )
goto redo;
@ -433,7 +433,7 @@ static int mpegps_read_packet(AVFormatContext *s,
if(startcode == 0x1bd) {
dvdaudio_substream_type = avio_r8(s->pb);
avio_seek(s->pb, 3, SEEK_CUR);
avio_skip(s->pb, 3);
len -= 4;
}
@ -525,7 +525,7 @@ static int mpegps_read_packet(AVFormatContext *s,
} else {
skip:
/* skip packet */
avio_seek(s->pb, len, SEEK_CUR);
avio_skip(s->pb, len);
goto redo;
}
/* no stream found: add a new stream */
@ -602,7 +602,7 @@ static int64_t mpegps_read_dts(AVFormatContext *s, int stream_index,
dts != AV_NOPTS_VALUE) {
break;
}
avio_seek(s->pb, len, SEEK_CUR);
avio_skip(s->pb, len);
}
#ifdef DEBUG_SEEK
printf("pos=0x%"PRIx64" dts=0x%"PRIx64" %0.3f\n", pos, dts, dts / 90000.0);

2
libavformat/mpegts.c
View File

@ -1362,7 +1362,7 @@ static int read_packet(AVFormatContext *s, uint8_t *buf, int raw_packet_size)
} else {
skip = raw_packet_size - TS_PACKET_SIZE;
if (skip > 0)
avio_seek(pb, skip, SEEK_CUR);
avio_skip(pb, skip);
break;
}
}

12
libavformat/msnwc_tcp.c
View File

@ -104,19 +104,19 @@ static int msnwc_tcp_read_packet(AVFormatContext *ctx, AVPacket *pkt)
uint16_t keyframe;
uint32_t size, timestamp;
avio_seek(pb, 1, SEEK_CUR); /* one byte has been read ahead */
avio_seek(pb, 2, SEEK_CUR);
avio_seek(pb, 2, SEEK_CUR);
avio_skip(pb, 1); /* one byte has been read ahead */
avio_skip(pb, 2);
avio_skip(pb, 2);
keyframe = avio_rl16(pb);
size = avio_rl32(pb);
avio_seek(pb, 4, SEEK_CUR);
avio_seek(pb, 4, SEEK_CUR);
avio_skip(pb, 4);
avio_skip(pb, 4);
timestamp = avio_rl32(pb);
if(!size || av_get_packet(pb, pkt, size) != size)
return -1;
avio_seek(pb, 1, SEEK_CUR); /* Read ahead one byte of struct size like read_header */
avio_skip(pb, 1); /* Read ahead one byte of struct size like read_header */
pkt->pts = timestamp;
pkt->dts = timestamp;

8
libavformat/mtv.c
View File

@ -83,10 +83,10 @@ static int mtv_read_header(AVFormatContext *s, AVFormatParameters *ap)
AVStream *st;
unsigned int audio_subsegments;
avio_seek(pb, 3, SEEK_CUR);
avio_skip(pb, 3);
mtv->file_size = avio_rl32(pb);
mtv->segments = avio_rl32(pb);
avio_seek(pb, 32, SEEK_CUR);
avio_skip(pb, 32);
mtv->audio_identifier = avio_rl24(pb);
mtv->audio_br = avio_rl16(pb);
mtv->img_colorfmt = avio_rl24(pb);
@ -105,7 +105,7 @@ static int mtv_read_header(AVFormatContext *s, AVFormatParameters *ap)
mtv->img_height=mtv->img_segment_size / (mtv->img_bpp>>3)
/ mtv->img_width;
avio_seek(pb, 4, SEEK_CUR);
avio_skip(pb, 4);
audio_subsegments = avio_rl16(pb);
mtv->full_segment_size =
audio_subsegments * (MTV_AUDIO_PADDING_SIZE + MTV_ASUBCHUNK_DATA_SIZE) +
@ -164,7 +164,7 @@ static int mtv_read_packet(AVFormatContext *s, AVPacket *pkt)
if((avio_tell(pb) - s->data_offset + mtv->img_segment_size) % mtv->full_segment_size)
{
avio_seek(pb, MTV_AUDIO_PADDING_SIZE, SEEK_CUR);
avio_skip(pb, MTV_AUDIO_PADDING_SIZE);
ret = av_get_packet(pb, pkt, MTV_ASUBCHUNK_DATA_SIZE);
if(ret < 0)

22
libavformat/mxfdec.c
View File

@ -262,7 +262,7 @@ static int mxf_decrypt_triplet(AVFormatContext *s, AVPacket *pkt, KLVPacket *klv
av_aes_init(mxf->aesc, s->key, 128, 1);
}
// crypto context
avio_seek(pb, klv_decode_ber_length(pb), SEEK_CUR);
avio_skip(pb, klv_decode_ber_length(pb));
// plaintext offset
klv_decode_ber_length(pb);
plaintext_size = avio_rb64(pb);
@ -297,7 +297,7 @@ static int mxf_decrypt_triplet(AVFormatContext *s, AVPacket *pkt, KLVPacket *klv
&pkt->data[plaintext_size], size >> 4, ivec, 1);
pkt->size = orig_size;
pkt->stream_index = index;
avio_seek(pb, end - avio_tell(pb), SEEK_CUR);
avio_skip(pb, end - avio_tell(pb));
return 0;
}
@ -339,7 +339,7 @@ static int mxf_read_packet(AVFormatContext *s, AVPacket *pkt)
return 0;
} else
skip:
avio_seek(s->pb, klv.length, SEEK_CUR);
avio_skip(s->pb, klv.length);
}
return AVERROR_EOF;
}
@ -397,7 +397,7 @@ static int mxf_read_content_storage(void *arg, AVIOContext *pb, int tag, int siz
mxf->packages_refs = av_malloc(mxf->packages_count * sizeof(UID));
if (!mxf->packages_refs)
return -1;
avio_seek(pb, 4, SEEK_CUR); /* useless size of objects, always 16 according to specs */
avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
avio_read(pb, (uint8_t *)mxf->packages_refs, mxf->packages_count * sizeof(UID));
break;
}
@ -416,7 +416,7 @@ static int mxf_read_source_clip(void *arg, AVIOContext *pb, int tag, int size, U
break;
case 0x1101:
/* UMID, only get last 16 bytes */
avio_seek(pb, 16, SEEK_CUR);
avio_skip(pb, 16);
avio_read(pb, source_clip->source_package_uid, 16);
break;
case 0x1102:
@ -437,7 +437,7 @@ static int mxf_read_material_package(void *arg, AVIOContext *pb, int tag, int si
package->tracks_refs = av_malloc(package->tracks_count * sizeof(UID));
if (!package->tracks_refs)
return -1;
avio_seek(pb, 4, SEEK_CUR); /* useless size of objects, always 16 according to specs */
avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
avio_read(pb, (uint8_t *)package->tracks_refs, package->tracks_count * sizeof(UID));
break;
}
@ -482,7 +482,7 @@ static int mxf_read_sequence(void *arg, AVIOContext *pb, int tag, int size, UID
sequence->structural_components_refs = av_malloc(sequence->structural_components_count * sizeof(UID));
if (!sequence->structural_components_refs)
return -1;
avio_seek(pb, 4, SEEK_CUR); /* useless size of objects, always 16 according to specs */
avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
avio_read(pb, (uint8_t *)sequence->structural_components_refs, sequence->structural_components_count * sizeof(UID));
break;
}
@ -500,12 +500,12 @@ static int mxf_read_source_package(void *arg, AVIOContext *pb, int tag, int size
package->tracks_refs = av_malloc(package->tracks_count * sizeof(UID));
if (!package->tracks_refs)
return -1;
avio_seek(pb, 4, SEEK_CUR); /* useless size of objects, always 16 according to specs */
avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
avio_read(pb, (uint8_t *)package->tracks_refs, package->tracks_count * sizeof(UID));
break;
case 0x4401:
/* UMID, only get last 16 bytes */
avio_seek(pb, 16, SEEK_CUR);
avio_skip(pb, 16);
avio_read(pb, package->package_uid, 16);
break;
case 0x4701:
@ -558,7 +558,7 @@ static int mxf_read_generic_descriptor(void *arg, AVIOContext *pb, int tag, int
descriptor->sub_descriptors_refs = av_malloc(descriptor->sub_descriptors_count * sizeof(UID));
if (!descriptor->sub_descriptors_refs)
return -1;
avio_seek(pb, 4, SEEK_CUR); /* useless size of objects, always 16 according to specs */
avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
avio_read(pb, (uint8_t *)descriptor->sub_descriptors_refs, descriptor->sub_descriptors_count * sizeof(UID));
break;
case 0x3004:
@ -943,7 +943,7 @@ static int mxf_read_header(AVFormatContext *s, AVFormatParameters *ap)
}
}
if (!metadata->read)
avio_seek(s->pb, klv.length, SEEK_CUR);
avio_skip(s->pb, klv.length);
}
return mxf_parse_structural_metadata(mxf);
}

2
libavformat/ncdec.c
View File

@ -73,7 +73,7 @@ static int nc_read_packet(AVFormatContext *s, AVPacket *pkt)
avio_r8(s->pb);
size = avio_rl16(s->pb);
avio_seek(s->pb, 9, SEEK_CUR);
avio_skip(s->pb, 9);
if (size == 0) {
av_log(s, AV_LOG_DEBUG, "Next packet size is zero\n");

2
libavformat/nsvdec.c
View File

@ -584,7 +584,7 @@ null_chunk_retry:
((auxtag >> 16) & 0x0ff),
((auxtag >> 24) & 0x0ff),
auxsize);
avio_seek(pb, auxsize, SEEK_CUR);
avio_skip(pb, auxsize);
vsize -= auxsize + sizeof(uint16_t) + sizeof(uint32_t); /* that's becoming braindead */
}

4
libavformat/nutdec.c
View File

@ -757,7 +757,7 @@ static int decode_frame(NUTContext *nut, AVPacket *pkt, int frame_code){
||(discard >= AVDISCARD_BIDIR && last_IP_pts != AV_NOPTS_VALUE && last_IP_pts > pts)
|| discard >= AVDISCARD_ALL
|| stc->skip_until_key_frame){
avio_seek(bc, size, SEEK_CUR);
avio_skip(bc, size);
return 1;
}
@ -803,7 +803,7 @@ static int nut_read_packet(AVFormatContext *s, AVPacket *pkt)
case STREAM_STARTCODE:
case INDEX_STARTCODE:
skip= get_packetheader(nut, bc, 0, tmp);
avio_seek(bc, skip, SEEK_CUR);
avio_skip(bc, skip);
break;
case INFO_STARTCODE:
if(decode_info_header(nut)<0)

28
libavformat/nuv.c
View File

@ -66,7 +66,7 @@ static int get_codec_data(AVIOContext *pb, AVStream *vst,
switch (frametype) {
case NUV_EXTRADATA:
subtype = avio_r8(pb);
avio_seek(pb, 6, SEEK_CUR);
avio_skip(pb, 6);
size = PKTSIZE(avio_rl32(pb));
if (vst && subtype == 'R') {
vst->codec->extradata_size = size;
@ -78,7 +78,7 @@ static int get_codec_data(AVIOContext *pb, AVStream *vst,
}
break;
case NUV_MYTHEXT:
avio_seek(pb, 7, SEEK_CUR);
avio_skip(pb, 7);
size = PKTSIZE(avio_rl32(pb));
if (size != 128 * 4)
break;
@ -90,7 +90,7 @@ static int get_codec_data(AVIOContext *pb, AVStream *vst,
if (vst->codec->codec_tag == MKTAG('R', 'J', 'P', 'G'))
vst->codec->codec_id = CODEC_ID_NUV;
} else
avio_seek(pb, 4, SEEK_CUR);
avio_skip(pb, 4);
if (ast) {
ast->codec->codec_tag = avio_rl32(pb);
@ -102,20 +102,20 @@ static int get_codec_data(AVIOContext *pb, AVStream *vst,
ast->codec->bits_per_coded_sample);
ast->need_parsing = AVSTREAM_PARSE_FULL;
} else
avio_seek(pb, 4 * 4, SEEK_CUR);
avio_skip(pb, 4 * 4);
size -= 6 * 4;
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
return 1;
case NUV_SEEKP:
size = 11;
break;
default:
avio_seek(pb, 7, SEEK_CUR);
avio_skip(pb, 7);
size = PKTSIZE(avio_rl32(pb));
break;
}
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
}
return 0;
}
@ -130,14 +130,14 @@ static int nuv_header(AVFormatContext *s, AVFormatParameters *ap) {
AVStream *vst = NULL, *ast = NULL;
avio_read(pb, id_string, 12);
is_mythtv = !memcmp(id_string, "MythTVVideo", 12);
avio_seek(pb, 5, SEEK_CUR); // version string
avio_seek(pb, 3, SEEK_CUR); // padding
avio_skip(pb, 5); // version string
avio_skip(pb, 3); // padding
width = avio_rl32(pb);
height = avio_rl32(pb);
avio_rl32(pb); // unused, "desiredwidth"
avio_rl32(pb); // unused, "desiredheight"
avio_r8(pb); // 'P' == progressive, 'I' == interlaced
avio_seek(pb, 3, SEEK_CUR); // padding
avio_skip(pb, 3); // padding
aspect = av_int2dbl(avio_rl64(pb));
if (aspect > 0.9999 && aspect < 1.0001)
aspect = 4.0 / 3.0;
@ -206,13 +206,13 @@ static int nuv_packet(AVFormatContext *s, AVPacket *pkt) {
switch (frametype) {
case NUV_EXTRADATA:
if (!ctx->rtjpg_video) {
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
break;
}
case NUV_VIDEO:
if (ctx->v_id < 0) {
av_log(s, AV_LOG_ERROR, "Video packet in file without video stream!\n");
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
break;
}
ret = av_new_packet(pkt, copyhdrsize + size);
@ -236,7 +236,7 @@ static int nuv_packet(AVFormatContext *s, AVPacket *pkt) {
case NUV_AUDIO:
if (ctx->a_id < 0) {
av_log(s, AV_LOG_ERROR, "Audio packet in file without audio stream!\n");
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
break;
}
ret = av_get_packet(pb, pkt, size);
@ -250,7 +250,7 @@ static int nuv_packet(AVFormatContext *s, AVPacket *pkt) {
// contains no data, size value is invalid
break;
default:
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
break;
}
}

2
libavformat/pva.c
View File

@ -122,7 +122,7 @@ recover:
if (pes_signal != 1) {
pva_log(s, AV_LOG_WARNING, "expected signaled PES packet, "
"trying to recover\n");
avio_seek(pb, length - 9, SEEK_CUR);
avio_skip(pb, length - 9);
if (!read_packet)
return AVERROR(EIO);
goto recover;

14
libavformat/qcp.c
View File

@ -93,7 +93,7 @@ static int qcp_read_header(AVFormatContext *s, AVFormatParameters *ap)
avio_rb32(pb); // "RIFF"
s->file_size = avio_rl32(pb) + 8;
avio_seek(pb, 8 + 4 + 1 + 1, SEEK_CUR); // "QLCMfmt " + chunk-size + major-version + minor-version
avio_skip(pb, 8 + 4 + 1 + 1); // "QLCMfmt " + chunk-size + major-version + minor-version
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->channels = 1;
@ -110,13 +110,13 @@ static int qcp_read_header(AVFormatContext *s, AVFormatParameters *ap)
av_log(s, AV_LOG_ERROR, "Unknown codec GUID.\n");
return AVERROR_INVALIDDATA;
}
avio_seek(pb, 2 + 80, SEEK_CUR); // codec-version + codec-name
avio_skip(pb, 2 + 80); // codec-version + codec-name
st->codec->bit_rate = avio_rl16(pb);
s->packet_size = avio_rl16(pb);
avio_seek(pb, 2, SEEK_CUR); // block-size
avio_skip(pb, 2); // block-size
st->codec->sample_rate = avio_rl16(pb);
avio_seek(pb, 2, SEEK_CUR); // sample-size
avio_skip(pb, 2); // sample-size
memset(c->rates_per_mode, -1, sizeof(c->rates_per_mode));
nb_rates = avio_rl32(pb);
@ -129,7 +129,7 @@ static int qcp_read_header(AVFormatContext *s, AVFormatParameters *ap)
} else
c->rates_per_mode[mode] = size;
}
avio_seek(pb, 16 - 2*nb_rates + 20, SEEK_CUR); // empty entries of rate-map-table + reserved
avio_skip(pb, 16 - 2*nb_rates + 20); // empty entries of rate-map-table + reserved
return 0;
}
@ -174,14 +174,14 @@ static int qcp_read_packet(AVFormatContext *s, AVPacket *pkt)
case MKTAG('v', 'r', 'a', 't'):
if (avio_rl32(pb)) // var-rate-flag
s->packet_size = 0;
avio_seek(pb, 4, SEEK_CUR); // size-in-packets
avio_skip(pb, 4); // size-in-packets
break;
case MKTAG('d', 'a', 't', 'a'):
c->data_size = chunk_size;
break;
default:
avio_seek(pb, chunk_size, SEEK_CUR);
avio_skip(pb, chunk_size);
}
}
return AVERROR_EOF;

6
libavformat/r3d.c
View File

@ -72,7 +72,7 @@ static int r3d_read_red1(AVFormatContext *s)
tmp = avio_rb32(s->pb); // filenum
av_dlog(s, "filenum %d\n", tmp);
avio_seek(s->pb, 32, SEEK_CUR); // unknown
avio_skip(s->pb, 32); // unknown
st->codec->width = avio_rb32(s->pb);
st->codec->height = avio_rb32(s->pb);
@ -152,7 +152,7 @@ static void r3d_read_reos(AVFormatContext *s)
tmp = avio_rb32(s->pb);
av_dlog(s, "num audio chunks %d\n", tmp);
avio_seek(s->pb, 6*4, SEEK_CUR);
avio_skip(s->pb, 6*4);
}
static int r3d_read_header(AVFormatContext *s, AVFormatParameters *ap)
@ -332,7 +332,7 @@ static int r3d_read_packet(AVFormatContext *s, AVPacket *pkt)
break;
default:
skip:
avio_seek(s->pb, atom.size-8, SEEK_CUR);
avio_skip(s->pb, atom.size-8);
}
}
return err;

6
libavformat/rdt.c
View File

@ -161,16 +161,16 @@ rdt_load_mdpr (PayloadContext *rdt, AVStream *st, int rule_nr)
num = avio_rb16(&pb);
if (rule_nr < 0 || rule_nr >= num)
return -1;
avio_seek(&pb, rule_nr * 2, SEEK_CUR);
avio_skip(&pb, rule_nr * 2);
chunk_nr = avio_rb16(&pb);
avio_seek(&pb, (num - 1 - rule_nr) * 2, SEEK_CUR);
avio_skip(&pb, (num - 1 - rule_nr) * 2);
/* read MDPR chunks */
num = avio_rb16(&pb);
if (chunk_nr >= num)
return -1;
while (chunk_nr--)
avio_seek(&pb, avio_rb32(&pb), SEEK_CUR);
avio_skip(&pb, avio_rb32(&pb));
size = avio_rb32(&pb);
} else {
size = rdt->mlti_data_size;

4
libavformat/riff.c
View File

@ -502,7 +502,7 @@ void ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size)
codec->bits_per_coded_sample = avio_rl16(pb);
codec->channel_layout = avio_rl32(pb); /* dwChannelMask */
id = avio_rl32(pb); /* 4 first bytes of GUID */
avio_seek(pb, 12, SEEK_CUR); /* skip end of GUID */
avio_skip(pb, 12); /* skip end of GUID */
cbSize -= 22;
size -= 22;
}
@ -515,7 +515,7 @@ void ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size)
/* It is possible for the chunk to contain garbage at the end */
if (size > 0)
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
}
codec->codec_id = ff_wav_codec_get_id(id, codec->bits_per_coded_sample);
if (codec->codec_id == CODEC_ID_AAC_LATM) {

2
libavformat/rl2.c
View File

@ -95,7 +95,7 @@ static av_cold int rl2_read_header(AVFormatContext *s,
int i;
int ret = 0;
avio_seek(pb,4, SEEK_CUR); /* skip FORM tag */
avio_skip(pb,4); /* skip FORM tag */
back_size = avio_rl32(pb); /**< get size of the background frame */
signature = avio_rb32(pb);
data_size = avio_rb32(pb);

22
libavformat/rmdec.c
View File

@ -132,7 +132,7 @@ static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb,
if (version == 3) {
int header_size = avio_rb16(pb);
int64_t startpos = avio_tell(pb);
avio_seek(pb, 14, SEEK_CUR);
avio_skip(pb, 14);
rm_read_metadata(s, 0);
if ((startpos + header_size) >= avio_tell(pb) + 2) {
// fourcc (should always be "lpcJ")
@ -141,7 +141,7 @@ static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb,
}
// Skip extra header crap (this should never happen)
if ((startpos + header_size) > avio_tell(pb))
avio_seek(pb, header_size + startpos - avio_tell(pb), SEEK_CUR);
avio_skip(pb, header_size + startpos - avio_tell(pb));
st->codec->sample_rate = 8000;
st->codec->channels = 1;
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
@ -150,7 +150,7 @@ static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb,
int flavor, sub_packet_h, coded_framesize, sub_packet_size;
int codecdata_length;
/* old version (4) */
avio_seek(pb, 2, SEEK_CUR); /* unused */
avio_skip(pb, 2); /* unused */
avio_rb32(pb); /* .ra4 */
avio_rb32(pb); /* data size */
avio_rb16(pb); /* version2 */
@ -321,7 +321,7 @@ ff_rm_read_mdpr_codecdata (AVFormatContext *s, AVIOContext *pb,
skip:
/* skip codec info */
size = avio_tell(pb) - codec_pos;
avio_seek(pb, codec_data_size - size, SEEK_CUR);
avio_skip(pb, codec_data_size - size);
return 0;
}
@ -340,7 +340,7 @@ static int rm_read_index(AVFormatContext *s)
size = avio_rb32(pb);
if (size < 20)
return -1;
avio_seek(pb, 2, SEEK_CUR);
avio_skip(pb, 2);
n_pkts = avio_rb32(pb);
str_id = avio_rb16(pb);
next_off = avio_rb32(pb);
@ -353,10 +353,10 @@ static int rm_read_index(AVFormatContext *s)
goto skip;
for (n = 0; n < n_pkts; n++) {
avio_seek(pb, 2, SEEK_CUR);
avio_skip(pb, 2);
pts = avio_rb32(pb);
pos = avio_rb32(pb);
avio_seek(pb, 4, SEEK_CUR); /* packet no. */
avio_skip(pb, 4); /* packet no. */
av_add_index_entry(st, pos, pts, 0, 0, AVINDEX_KEYFRAME);
}
@ -469,7 +469,7 @@ static int rm_read_header(AVFormatContext *s, AVFormatParameters *ap)
goto header_end;
default:
/* unknown tag: skip it */
avio_seek(pb, tag_size - 10, SEEK_CUR);
avio_skip(pb, tag_size - 10);
break;
}
}
@ -529,7 +529,7 @@ static int sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_
if(state == MKBETAG('I', 'N', 'D', 'X')){
int n_pkts, expected_len;
len = avio_rb32(pb);
avio_seek(pb, 2, SEEK_CUR);
avio_skip(pb, 2);
n_pkts = avio_rb32(pb);
expected_len = 20 + n_pkts * 14;
if (len == 20)
@ -566,7 +566,7 @@ static int sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_
if (i == s->nb_streams) {
skip:
/* skip packet if unknown number */
avio_seek(pb, len, SEEK_CUR);
avio_skip(pb, len);
rm->remaining_len = 0;
continue;
}
@ -929,7 +929,7 @@ static int64_t rm_read_dts(AVFormatContext *s, int stream_index,
break;
}
avio_seek(s->pb, len, SEEK_CUR);
avio_skip(s->pb, len);
}
*ppos = pos;
return dts;

10
libavformat/rtpdec_asf.c
View File

@ -187,11 +187,11 @@ static int asfrtp_parse_packet(AVFormatContext *s, PayloadContext *asf,
flags |= RTP_FLAG_KEY;
len_off = avio_rb24(pb);
if (mflags & 0x20) /**< relative timestamp */
avio_seek(pb, 4, SEEK_CUR);
avio_skip(pb, 4);
if (mflags & 0x10) /**< has duration */
avio_seek(pb, 4, SEEK_CUR);
avio_skip(pb, 4);
if (mflags & 0x8) /**< has location ID */
avio_seek(pb, 4, SEEK_CUR);
avio_skip(pb, 4);
off = avio_tell(pb);
if (!(mflags & 0x40)) {
@ -214,7 +214,7 @@ static int asfrtp_parse_packet(AVFormatContext *s, PayloadContext *asf,
return AVERROR(EIO);
avio_write(asf->pktbuf, buf + off, len - off);
avio_seek(pb, len - off, SEEK_CUR);
avio_skip(pb, len - off);
if (!(flags & RTP_FLAG_MARKER))
return -1;
out_len = url_close_dyn_buf(asf->pktbuf, &asf->buf);
@ -234,7 +234,7 @@ static int asfrtp_parse_packet(AVFormatContext *s, PayloadContext *asf,
asf->buf = av_realloc(asf->buf, out_len);
memcpy(asf->buf + prev_len, buf + off,
FFMIN(cur_len, len - off));
avio_seek(pb, cur_len, SEEK_CUR);
avio_skip(pb, cur_len);
}
}

4
libavformat/rtpdec_qt.c
View File

@ -149,13 +149,13 @@ static int qt_rtp_parse_packet(AVFormatContext *s, PayloadContext *qt,
break;
}
default:
avio_seek(&pb, tlv_len, SEEK_CUR);
avio_skip(&pb, tlv_len);
break;
}
}
/* 32-bit alignment */
avio_seek(&pb, ((avio_tell(&pb) + 3) & ~3) - avio_tell(&pb), SEEK_CUR);
avio_skip(&pb, ((avio_tell(&pb) + 3) & ~3) - avio_tell(&pb));
} else
avio_seek(&pb, 4, SEEK_SET);

4
libavformat/sauce.c
View File

@ -51,14 +51,14 @@ int ff_sauce_read(AVFormatContext *avctx, uint64_t *fsize, int *got_width, int g
GET_SAUCE_META("artist", 20)
GET_SAUCE_META("publisher", 20)
GET_SAUCE_META("date", 8)
avio_seek(pb, 4, SEEK_CUR);
avio_skip(pb, 4);
datatype = avio_r8(pb);
filetype = avio_r8(pb);
t1 = avio_rl16(pb);
t2 = avio_rl16(pb);
nb_comments = avio_r8(pb);
flags = avio_r8(pb);
avio_seek(pb, 4, SEEK_CUR);
avio_skip(pb, 4);
GET_SAUCE_META("encoder", 22);
if (got_width && datatype && filetype) {

10
libavformat/siff.c
View File

@ -103,7 +103,7 @@ static int siff_parse_vbv1(AVFormatContext *s, SIFFContext *c, AVIOContext *pb)
}
width = avio_rl16(pb);
height = avio_rl16(pb);
avio_seek(pb, 4, SEEK_CUR);
avio_skip(pb, 4);
c->frames = avio_rl16(pb);
if(!c->frames){
av_log(s, AV_LOG_ERROR, "File contains no frames ???\n");
@ -113,7 +113,7 @@ static int siff_parse_vbv1(AVFormatContext *s, SIFFContext *c, AVIOContext *pb)
c->rate = avio_rl16(pb);
c->block_align = c->rate * (c->bits >> 3);
avio_seek(pb, 16, SEEK_CUR); //zeroes
avio_skip(pb, 16); //zeroes
st = av_new_stream(s, 0);
if (!st)
@ -145,7 +145,7 @@ static int siff_parse_soun(AVFormatContext *s, SIFFContext *c, AVIOContext *pb)
av_log(s, AV_LOG_ERROR, "Header chunk size is incorrect\n");
return -1;
}
avio_seek(pb, 4, SEEK_CUR); //unknown value
avio_skip(pb, 4); //unknown value
c->rate = avio_rl16(pb);
c->bits = avio_rl16(pb);
c->block_align = c->rate * (c->bits >> 3);
@ -160,7 +160,7 @@ static int siff_read_header(AVFormatContext *s, AVFormatParameters *ap)
if (avio_rl32(pb) != TAG_SIFF)
return -1;
avio_seek(pb, 4, SEEK_CUR); //ignore size
avio_skip(pb, 4); //ignore size
tag = avio_rl32(pb);
if (tag != TAG_VBV1 && tag != TAG_SOUN){
@ -176,7 +176,7 @@ static int siff_read_header(AVFormatContext *s, AVFormatParameters *ap)
av_log(s, AV_LOG_ERROR, "'BODY' chunk is missing\n");
return -1;
}
avio_seek(pb, 4, SEEK_CUR); //ignore size
avio_skip(pb, 4); //ignore size
return 0;
}

6
libavformat/soxdec.c
View File

@ -58,14 +58,14 @@ static int sox_read_header(AVFormatContext *s,
if (avio_rl32(pb) == SOX_TAG) {
st->codec->codec_id = CODEC_ID_PCM_S32LE;
header_size = avio_rl32(pb);
avio_seek(pb, 8, SEEK_CUR); /* sample count */
avio_skip(pb, 8); /* sample count */
sample_rate = av_int2dbl(avio_rl64(pb));
st->codec->channels = avio_rl32(pb);
comment_size = avio_rl32(pb);
} else {
st->codec->codec_id = CODEC_ID_PCM_S32BE;
header_size = avio_rb32(pb);
avio_seek(pb, 8, SEEK_CUR); /* sample count */
avio_skip(pb, 8); /* sample count */
sample_rate = av_int2dbl(avio_rb64(pb));
st->codec->channels = avio_rb32(pb);
comment_size = avio_rb32(pb);
@ -105,7 +105,7 @@ static int sox_read_header(AVFormatContext *s,
AV_METADATA_DONT_STRDUP_VAL);
}
avio_seek(pb, header_size - SOX_FIXED_HDR - comment_size, SEEK_CUR);
avio_skip(pb, header_size - SOX_FIXED_HDR - comment_size);
st->codec->sample_rate = sample_rate;
st->codec->bits_per_coded_sample = 32;

2
libavformat/spdifdec.c
View File

@ -201,7 +201,7 @@ static int spdif_read_packet(AVFormatContext *s, AVPacket *pkt)
}
/* skip over the padding to the beginning of the next frame */
avio_seek(pb, offset - pkt->size - BURST_HEADER_SIZE, SEEK_CUR);
avio_skip(pb, offset - pkt->size - BURST_HEADER_SIZE);
if (!s->nb_streams) {
/* first packet, create a stream */

6
libavformat/swfdec.c
View File

@ -70,7 +70,7 @@ static int swf_read_header(AVFormatContext *s, AVFormatParameters *ap)
/* skip rectangle size */
nbits = avio_r8(pb) >> 3;
len = (4 * nbits - 3 + 7) / 8;
avio_seek(pb, len, SEEK_CUR);
avio_skip(pb, len);
swf->frame_rate = avio_rl16(pb); /* 8.8 fixed */
avio_rl16(pb); /* frame count */
@ -159,7 +159,7 @@ static int swf_read_packet(AVFormatContext *s, AVPacket *pkt)
st = s->streams[i];
if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && st->id == -1) {
if (st->codec->codec_id == CODEC_ID_MP3) {
avio_seek(pb, 4, SEEK_CUR);
avio_skip(pb, 4);
av_get_packet(pb, pkt, len-4);
} else { // ADPCM, PCM
av_get_packet(pb, pkt, len);
@ -202,7 +202,7 @@ static int swf_read_packet(AVFormatContext *s, AVPacket *pkt)
return pkt->size;
}
skip:
avio_seek(pb, len, SEEK_CUR);
avio_skip(pb, len);
}
return 0;
}

2
libavformat/tmv.c
View File

@ -152,7 +152,7 @@ static int tmv_read_packet(AVFormatContext *s, AVPacket *pkt)
ret = av_get_packet(pb, pkt, pkt_size);
if (tmv->stream_index)
avio_seek(pb, tmv->padding, SEEK_CUR);
avio_skip(pb, tmv->padding);
pkt->stream_index = tmv->stream_index;
tmv->stream_index ^= 1;

6
libavformat/tta.c
View File

@ -50,7 +50,7 @@ static int tta_read_header(AVFormatContext *s, AVFormatParameters *ap)
if (avio_rl32(s->pb) != AV_RL32("TTA1"))
return -1; // not tta file
avio_seek(s->pb, 2, SEEK_CUR); // FIXME: flags
avio_skip(s->pb, 2); // FIXME: flags
channels = avio_rl16(s->pb);
bps = avio_rl16(s->pb);
samplerate = avio_rl32(s->pb);
@ -65,7 +65,7 @@ static int tta_read_header(AVFormatContext *s, AVFormatParameters *ap)
return -1;
}
avio_seek(s->pb, 4, SEEK_CUR); // header crc
avio_skip(s->pb, 4); // header crc
framelen = samplerate*256/245;
c->totalframes = datalen / framelen + ((datalen % framelen) ? 1 : 0);
@ -91,7 +91,7 @@ static int tta_read_header(AVFormatContext *s, AVFormatParameters *ap)
av_add_index_entry(st, framepos, i*framelen, size, 0, AVINDEX_KEYFRAME);
framepos += size;
}
avio_seek(s->pb, 4, SEEK_CUR); // seektable crc
avio_skip(s->pb, 4); // seektable crc
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_id = CODEC_ID_TTA;

2
libavformat/txd.c
View File

@ -73,7 +73,7 @@ next_chunk:
if (chunk_size > 100)
break;
case TXD_EXTRA:
avio_seek(s->pb, chunk_size, SEEK_CUR);
avio_skip(s->pb, chunk_size);
case TXD_FILE:
case TXD_TEXTURE:
goto next_chunk;

2
libavformat/vc1test.c
View File

@ -68,7 +68,7 @@ static int vc1t_read_header(AVFormatContext *s,
st->codec->width = avio_rl32(pb);
if(avio_rl32(pb) != 0xC)
return -1;
avio_seek(pb, 8, SEEK_CUR);
avio_skip(pb, 8);
fps = avio_rl32(pb);
if(fps == 0xFFFFFFFF)
av_set_pts_info(st, 32, 1, 1000);

8
libavformat/vocdec.c
View File

@ -45,13 +45,13 @@ static int voc_read_header(AVFormatContext *s, AVFormatParameters *ap)
int header_size;
AVStream *st;
avio_seek(pb, 20, SEEK_CUR);
avio_skip(pb, 20);
header_size = avio_rl16(pb) - 22;
if (header_size != 4) {
av_log(s, AV_LOG_ERROR, "unknown header size: %d\n", header_size);
return AVERROR(ENOSYS);
}
avio_seek(pb, header_size, SEEK_CUR);
avio_skip(pb, header_size);
st = av_new_stream(s, 0);
if (!st)
return AVERROR(ENOMEM);
@ -114,13 +114,13 @@ voc_get_packet(AVFormatContext *s, AVPacket *pkt, AVStream *st, int max_size)
dec->bits_per_coded_sample = avio_r8(pb);
dec->channels = avio_r8(pb);
tmp_codec = avio_rl16(pb);
avio_seek(pb, 4, SEEK_CUR);
avio_skip(pb, 4);
voc->remaining_size -= 12;
max_size -= 12;
break;
default:
avio_seek(pb, voc->remaining_size, SEEK_CUR);
avio_skip(pb, voc->remaining_size);
max_size -= voc->remaining_size;
voc->remaining_size = 0;
break;

6
libavformat/vqf.c
View File

@ -72,7 +72,7 @@ static int vqf_read_header(AVFormatContext *s, AVFormatParameters *ap)
if (!st)
return AVERROR(ENOMEM);
avio_seek(s->pb, 12, SEEK_CUR);
avio_skip(s->pb, 12);
header_size = avio_rb32(s->pb);
@ -101,7 +101,7 @@ static int vqf_read_header(AVFormatContext *s, AVFormatParameters *ap)
st->codec->channels = avio_rb32(s->pb) + 1;
read_bitrate = avio_rb32(s->pb);
rate_flag = avio_rb32(s->pb);
avio_seek(s->pb, len-12, SEEK_CUR);
avio_skip(s->pb, len-12);
st->codec->bit_rate = read_bitrate*1000;
st->codec->bits_per_coded_sample = 16;
@ -140,7 +140,7 @@ static int vqf_read_header(AVFormatContext *s, AVFormatParameters *ap)
av_log(s, AV_LOG_ERROR, "Unknown chunk: %c%c%c%c\n",
((char*)&chunk_tag)[0], ((char*)&chunk_tag)[1],
((char*)&chunk_tag)[2], ((char*)&chunk_tag)[3]);
avio_seek(s->pb, FFMIN(len, header_size), SEEK_CUR);
avio_skip(s->pb, FFMIN(len, header_size));
break;
}

10
libavformat/wav.c
View File

@ -160,7 +160,7 @@ static int64_t find_tag(AVIOContext *pb, uint32_t tag1)
size = next_tag(pb, &tag);
if (tag == tag1)
break;
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
}
return size;
}
@ -217,7 +217,7 @@ static int wav_read_header(AVFormatContext *s,
avio_rl64(pb); /* RIFF size */
data_size = avio_rl64(pb);
sample_count = avio_rl64(pb);
avio_seek(pb, size - 16, SEEK_CUR); /* skip rest of ds64 chunk */
avio_skip(pb, size - 16); /* skip rest of ds64 chunk */
}
/* parse fmt header */
@ -243,7 +243,7 @@ static int wav_read_header(AVFormatContext *s,
sample_count = avio_rl32(pb);
size -= 4;
}
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
}
if (rf64)
size = data_size;
@ -276,7 +276,7 @@ static int64_t find_guid(AVIOContext *pb, const uint8_t guid1[16])
return -1;
if (!memcmp(guid, guid1, 16))
return size;
avio_seek(pb, FFALIGN(size, INT64_C(8)) - 24, SEEK_CUR);
avio_skip(pb, FFALIGN(size, INT64_C(8)) - 24);
}
return -1;
}
@ -410,7 +410,7 @@ static int w64_read_header(AVFormatContext *s, AVFormatParameters *ap)
/* subtract chunk header size - normal wav file doesn't count it */
ff_get_wav_header(pb, st->codec, size - 24);
avio_seek(pb, FFALIGN(size, INT64_C(8)) - size, SEEK_CUR);
avio_skip(pb, FFALIGN(size, INT64_C(8)) - size);
st->need_parsing = AVSTREAM_PARSE_FULL;

8
libavformat/wc3movie.c
View File

@ -101,7 +101,7 @@ static int wc3_read_header(AVFormatContext *s,
wc3->vpkt.data = NULL; wc3->vpkt.size = 0;
/* skip the first 3 32-bit numbers */
avio_seek(pb, 12, SEEK_CUR);
avio_skip(pb, 12);
/* traverse through the chunks and load the header information before
* the first BRCH tag */
@ -114,12 +114,12 @@ static int wc3_read_header(AVFormatContext *s,
case SOND_TAG:
case INDX_TAG:
/* SOND unknown, INDX unnecessary; ignore both */
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
break;
case PC__TAG:
/* number of palettes, unneeded */
avio_seek(pb, 12, SEEK_CUR);
avio_skip(pb, 12);
break;
case BNAM_TAG:
@ -240,7 +240,7 @@ static int wc3_read_packet(AVFormatContext *s,
case TEXT_TAG:
/* subtitle chunk */
#if 0
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
#else
if ((unsigned)size > sizeof(text) || (ret = avio_read(pb, text, size)) != size)
ret = AVERROR(EIO);

6
libavformat/westwood.c
View File

@ -303,7 +303,7 @@ static int wsvqa_read_header(AVFormatContext *s,
break;
}
avio_seek(pb, chunk_size, SEEK_CUR);
avio_skip(pb, chunk_size);
} while (chunk_tag != FINF_TAG);
return 0;
@ -348,7 +348,7 @@ static int wsvqa_read_packet(AVFormatContext *s,
}
/* stay on 16-bit alignment */
if (skip_byte)
avio_seek(pb, 1, SEEK_CUR);
avio_skip(pb, 1);
return ret;
} else {
@ -359,7 +359,7 @@ static int wsvqa_read_packet(AVFormatContext *s,
default:
av_log(s, AV_LOG_INFO, "Skipping unknown chunk 0x%08X\n", chunk_type);
}
avio_seek(pb, chunk_size + skip_byte, SEEK_CUR);
avio_skip(pb, chunk_size + skip_byte);
}
}

54
libavformat/wtv.c
View File

@ -539,7 +539,7 @@ static void get_tag(AVFormatContext *s, AVIOContext *pb, const char *key, int ty
} else {
av_freep(&buf);
av_log(s, AV_LOG_WARNING, "unsupported metadata entry; key:%s, type:%d, length:0x%x\n", key, type, length);
avio_seek(pb, length, SEEK_CUR);
avio_skip(pb, length);
return;
}
@ -582,7 +582,7 @@ static int parse_videoinfoheader2(AVFormatContext *s, AVStream *st)
WtvContext *wtv = s->priv_data;
AVIOContext *pb = wtv->pb;
avio_seek(pb, 72, SEEK_CUR); // picture aspect ratio is unreliable
avio_skip(pb, 72); // picture aspect ratio is unreliable
ff_get_bmp_header(pb, st);
return 72 + 40;
@ -658,17 +658,17 @@ static AVStream * parse_media_type(AVFormatContext *s, AVStream *st, int sid,
if (size < 32) {
av_log(s, AV_LOG_WARNING, "format buffer size underflow\n");
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
return NULL;
}
avio_seek(pb, size - 32, SEEK_CUR);
avio_skip(pb, size - 32);
ff_get_guid(pb, &actual_subtype);
ff_get_guid(pb, &actual_formattype);
avio_seek(pb, -size, SEEK_CUR);
st = parse_media_type(s, st, sid, mediatype, actual_subtype, actual_formattype, size - 32);
avio_seek(pb, 32, SEEK_CUR);
avio_skip(pb, 32);
return st;
} else if (!ff_guidcmp(mediatype, mediatype_audio)) {
st = new_stream(s, st, sid, AVMEDIA_TYPE_AUDIO);
@ -679,7 +679,7 @@ static AVStream * parse_media_type(AVFormatContext *s, AVStream *st, int sid,
} else {
if (ff_guidcmp(formattype, format_none))
av_log(s, AV_LOG_WARNING, "unknown formattype:"PRI_GUID"\n", ARG_GUID(formattype));
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
}
if (!memcmp(subtype + 4, (const uint8_t[]){MEDIASUBTYPE_BASE_GUID}, 12)) {
@ -708,7 +708,7 @@ static AVStream * parse_media_type(AVFormatContext *s, AVStream *st, int sid,
} else {
if (ff_guidcmp(formattype, format_none))
av_log(s, AV_LOG_WARNING, "unknown formattype:"PRI_GUID"\n", ARG_GUID(formattype));
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
}
if (!memcmp(subtype + 4, (const uint8_t[]){MEDIASUBTYPE_BASE_GUID}, 12)) {
@ -726,7 +726,7 @@ static AVStream * parse_media_type(AVFormatContext *s, AVStream *st, int sid,
return NULL;
if (ff_guidcmp(formattype, format_none))
av_log(s, AV_LOG_WARNING, "unknown formattype:"PRI_GUID"\n", ARG_GUID(formattype));
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
st->codec->codec_id = CODEC_ID_DVB_SUBTITLE;
return st;
} else if (!ff_guidcmp(mediatype, mediatype_mstvcaption) &&
@ -736,21 +736,21 @@ static AVStream * parse_media_type(AVFormatContext *s, AVStream *st, int sid,
return NULL;
if (ff_guidcmp(formattype, format_none))
av_log(s, AV_LOG_WARNING, "unknown formattype:"PRI_GUID"\n", ARG_GUID(formattype));
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
st->codec->codec_id = CODEC_ID_DVB_TELETEXT;
return st;
} else if (!ff_guidcmp(mediatype, mediatype_mpeg2_sections) &&
!ff_guidcmp(subtype, mediasubtype_mpeg2_sections)) {
if (ff_guidcmp(formattype, format_none))
av_log(s, AV_LOG_WARNING, "unknown formattype:"PRI_GUID"\n", ARG_GUID(formattype));
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
return NULL;
}
av_log(s, AV_LOG_WARNING, "unknown media type, mediatype:"PRI_GUID
", subtype:"PRI_GUID", formattype:"PRI_GUID"\n",
ARG_GUID(mediatype), ARG_GUID(subtype), ARG_GUID(formattype));
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
return NULL;
}
@ -779,17 +779,17 @@ static int parse_chunks(AVFormatContext *s, int mode, int64_t seekts, int *len_p
if (len < 32)
break;
sid = avio_rl32(pb) & 0x7FFF;
avio_seek(pb, 8, SEEK_CUR);
avio_skip(pb, 8);
consumed = 32;
if (!ff_guidcmp(g, stream_guid)) {
if (ff_find_stream_index(s, sid) < 0) {
ff_asf_guid mediatype, subtype, formattype;
int size;
avio_seek(pb, 28, SEEK_CUR);
avio_skip(pb, 28);
ff_get_guid(pb, &mediatype);
ff_get_guid(pb, &subtype);
avio_seek(pb, 12, SEEK_CUR);
avio_skip(pb, 12);
ff_get_guid(pb, &formattype);
size = avio_rl32(pb);
parse_media_type(s, 0, sid, mediatype, subtype, formattype, size);
@ -800,10 +800,10 @@ static int parse_chunks(AVFormatContext *s, int mode, int64_t seekts, int *len_p
if (stream_index >= 0 && !((WtvStream*)s->streams[stream_index]->priv_data)->seen_data) {
ff_asf_guid mediatype, subtype, formattype;
int size;
avio_seek(pb, 12, SEEK_CUR);
avio_skip(pb, 12);
ff_get_guid(pb, &mediatype);
ff_get_guid(pb, &subtype);
avio_seek(pb, 12, SEEK_CUR);
avio_skip(pb, 12);
ff_get_guid(pb, &formattype);
size = avio_rl32(pb);
parse_media_type(s, s->streams[stream_index], sid, mediatype, subtype, formattype, size);
@ -822,11 +822,11 @@ static int parse_chunks(AVFormatContext *s, int mode, int64_t seekts, int *len_p
const uint8_t *pbuf = buf;
int buf_size;
avio_seek(pb, 8, SEEK_CUR);
avio_skip(pb, 8);
consumed += 8;
if (!ff_guidcmp(g, EVENTID_CtxADescriptorSpanningEvent) ||
!ff_guidcmp(g, EVENTID_CSDescriptorSpanningEvent)) {
avio_seek(pb, 6, SEEK_CUR);
avio_skip(pb, 6);
consumed += 6;
}
@ -840,7 +840,7 @@ static int parse_chunks(AVFormatContext *s, int mode, int64_t seekts, int *len_p
if (stream_index >= 0) {
AVStream *st = s->streams[stream_index];
int audio_type;
avio_seek(pb, 8, SEEK_CUR);
avio_skip(pb, 8);
audio_type = avio_r8(pb);
if (audio_type == 2)
st->disposition |= AV_DISPOSITION_HEARING_IMPAIRED;
@ -851,7 +851,7 @@ static int parse_chunks(AVFormatContext *s, int mode, int64_t seekts, int *len_p
} else if (!ff_guidcmp(g, EVENTID_DVBScramblingControlSpanningEvent)) {
int stream_index = ff_find_stream_index(s, sid);
if (stream_index >= 0) {
avio_seek(pb, 12, SEEK_CUR);
avio_skip(pb, 12);
if (avio_rl32(pb))
av_log(s, AV_LOG_WARNING, "DVB scrambled stream detected (st:%d), decoding will likely fail\n", stream_index);
consumed += 16;
@ -861,7 +861,7 @@ static int parse_chunks(AVFormatContext *s, int mode, int64_t seekts, int *len_p
if (stream_index >= 0) {
AVStream *st = s->streams[stream_index];
uint8_t language[4];
avio_seek(pb, 12, SEEK_CUR);
avio_skip(pb, 12);
avio_read(pb, language, 3);
if (language[0]) {
language[3] = 0;
@ -874,7 +874,7 @@ static int parse_chunks(AVFormatContext *s, int mode, int64_t seekts, int *len_p
} else if (!ff_guidcmp(g, timestamp_guid)) {
int stream_index = ff_find_stream_index(s, sid);
if (stream_index >= 0) {
avio_seek(pb, 8, SEEK_CUR);
avio_skip(pb, 8);
wtv->pts = avio_rl64(pb);
consumed += 16;
if (wtv->pts == -1)
@ -885,7 +885,7 @@ static int parse_chunks(AVFormatContext *s, int mode, int64_t seekts, int *len_p
wtv->epoch = wtv->pts;
if (mode == SEEK_TO_PTS && wtv->pts >= seekts) {
#define WTV_PAD8(x) (((x) + 7) & ~7)
avio_seek(pb, WTV_PAD8(len) - consumed, SEEK_CUR);
avio_skip(pb, WTV_PAD8(len) - consumed);
return 0;
}
}
@ -923,7 +923,7 @@ static int parse_chunks(AVFormatContext *s, int mode, int64_t seekts, int *len_p
} else
av_log(s, AV_LOG_WARNING, "unsupported chunk:"PRI_GUID"\n", ARG_GUID(g));
avio_seek(pb, WTV_PAD8(len) - consumed, SEEK_CUR);
avio_skip(pb, WTV_PAD8(len) - consumed);
}
return AVERROR_EOF;
}
@ -954,13 +954,13 @@ static int read_header(AVFormatContext *s, AVFormatParameters *ap)
wtv->last_valid_pts = AV_NOPTS_VALUE;
/* read root directory sector */
avio_seek(s->pb, 0x30, SEEK_CUR);
avio_skip(s->pb, 0x30);
root_size = avio_rl32(s->pb);
if (root_size > sizeof(root)) {
av_log(s, AV_LOG_ERROR, "root directory size exceeds sector size\n");
return AVERROR_INVALIDDATA;
}
avio_seek(s->pb, 4, SEEK_CUR);
avio_skip(s->pb, 4);
root_sector = avio_rl32(s->pb);
avio_seek(s->pb, root_sector << WTV_SECTOR_BITS, SEEK_SET);
@ -1047,7 +1047,7 @@ static int read_packet(AVFormatContext *s, AVPacket *pkt)
return ret;
pkt->stream_index = stream_index;
pkt->pts = wtv->pts;
avio_seek(pb, WTV_PAD8(len) - len, SEEK_CUR);
avio_skip(pb, WTV_PAD8(len) - len);
return 0;
}

6
libavformat/wv.c
View File

@ -153,7 +153,7 @@ static int wv_read_block_header(AVFormatContext *ctx, AVIOContext *pb, int appen
chmask = avio_rl32(pb);
break;
case 5:
avio_seek(pb, 1, SEEK_CUR);
avio_skip(pb, 1);
chan |= (avio_r8(pb) & 0xF) << 8;
chmask = avio_rl24(pb);
break;
@ -166,10 +166,10 @@ static int wv_read_block_header(AVFormatContext *ctx, AVIOContext *pb, int appen
rate = avio_rl24(pb);
break;
default:
avio_seek(pb, size, SEEK_CUR);
avio_skip(pb, size);
}
if(id&0x40)
avio_seek(pb, 1, SEEK_CUR);
avio_skip(pb, 1);
}
if(rate == -1){
av_log(ctx, AV_LOG_ERROR, "Cannot determine custom sampling rate\n");

4
libavformat/xa.c
View File

@ -76,9 +76,9 @@ static int xa_read_header(AVFormatContext *s,
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_id = CODEC_ID_ADPCM_EA_MAXIS_XA;
avio_seek(pb, 4, SEEK_CUR); /* Skip the XA ID */
avio_skip(pb, 4); /* Skip the XA ID */
xa->out_size = avio_rl32(pb);
avio_seek(pb, 2, SEEK_CUR); /* Skip the tag */
avio_skip(pb, 2); /* Skip the tag */
st->codec->channels = avio_rl16(pb);
st->codec->sample_rate = avio_rl32(pb);
/* Value in file is average byte rate*/

4
libavformat/yop.c
View File

@ -81,7 +81,7 @@ static int yop_read_header(AVFormatContext *s, AVFormatParameters *ap)
video_dec->codec_type = AVMEDIA_TYPE_VIDEO;
video_dec->codec_id = CODEC_ID_YOP;
avio_seek(pb, 6, SEEK_CUR);
avio_skip(pb, 6);
frame_rate = avio_r8(pb);
yop->frame_size = avio_r8(pb) * 2048;
@ -153,7 +153,7 @@ static int yop_read_packet(AVFormatContext *s, AVPacket *pkt)
// Set position to the start of the frame
pkt->pos = yop->video_packet.pos;
avio_seek(pb, yop->audio_block_length - ret, SEEK_CUR);
avio_skip(pb, yop->audio_block_length - ret);
ret = avio_read(pb, yop->video_packet.data + yop->palette_size,
actual_video_data_size);