70 #define LICENSE_PREFIX "libavformat license: " 75 #define SANE_CHUNK_SIZE (50000000) 81 int64_t chunk_size =
size;
82 int64_t orig_pos = pkt->
pos;
83 int orig_size = pkt->
size;
87 int prev_size = pkt->
size;
96 read_size =
FFMIN(size, chunk_size);
103 if (ret != read_size) {
114 return pkt->
size > orig_size ? pkt->
size - orig_size : ret;
144 static const struct {
165 "Probe with size=%d, packets=%d detected %s with score=%d\n",
168 for (i = 0; fmt_id_type[i].name; i++) {
169 if (!strcmp(fmt->
name, fmt_id_type[i].name)) {
220 (*plast_pktl)->next = pktl;
222 *packet_buffer = pktl;
266 if ((ret =
init_input(s, filename, &tmp)) < 0)
302 if (id3v2_extra_meta &&
353 "nothing to probe for stream %d\n", st->
index);
405 if (!pktl || ret ==
AVERROR(EAGAIN))
419 "Dropped corrupted packet (stream = %d)\n",
513 if (frame_size <= 0 || st->codec->sample_rate <= 0)
534 int64_t dts, int64_t pts)
547 for (; pktl; pktl = pktl->
next) {
572 for (; pktl; pktl = pktl->
next) {
586 for (; pktl; pktl = pktl->
next) {
608 int num, den, presentation_delayed, delay, i;
619 presentation_delayed = 0;
625 presentation_delayed = 1;
637 if (delay == 1 && pkt->
dts == pkt->
pts &&
671 presentation_delayed = 1;
674 "IN delayed:%d pts:%"PRId64
", dts:%"PRId64
" " 675 "cur_dts:%"PRId64
" st:%d pc:%p\n",
680 if ((delay == 0 || (delay == 1 && pc)) &&
682 if (presentation_delayed) {
750 "OUTdelayed:%d/%d pts:%"PRId64
", dts:%"PRId64
" cur_dts:%"PRId64
"\n",
751 presentation_delayed, delay, pkt->
pts, pkt->
dts, st->
cur_dts);
764 *pkt_buf = pktl->
next;
782 int ret = 0, got_output = 0;
790 while (size > 0 || (pkt == &
flush_pkt && got_output)) {
795 &out_pkt.
data, &out_pkt.
size, data, size,
803 got_output = !!out_pkt.
size;
849 #if FF_API_DESTRUCT_PACKET 885 *pkt_buffer = pktl->
next;
887 *pkt_buffer_end =
NULL;
894 int ret = 0, i, got_packet = 0;
923 cur_pkt.
pts < cur_pkt.
dts) {
925 "Invalid timestamps stream=%d, pts=%"PRId64
", " 926 "dts=%"PRId64
", size=%d\n",
932 "ff_read_packet stream=%d, pts=%"PRId64
", dts=%"PRId64
", " 933 "size=%d, duration=%d, flags=%d\n",
981 "read_frame_internal stream=%d, pts=%"PRId64
", dts=%"PRId64
", " 982 "size=%d, duration=%d, flags=%d\n",
1030 if (pktl && ret !=
AVERROR(EAGAIN)) {
1058 int first_audio_index = -1;
1070 if (first_audio_index < 0 &&
1072 first_audio_index = i;
1074 return first_audio_index >= 0 ? first_audio_index : 0;
1132 int *nb_index_entries,
1133 unsigned int *index_entries_allocated_size,
1134 int64_t pos, int64_t timestamp,
1140 if ((
unsigned) *nb_index_entries + 1 >= UINT_MAX /
sizeof(
AVIndexEntry))
1144 index_entries_allocated_size,
1145 (*nb_index_entries + 1) *
1150 *index_entries = entries;
1156 index = (*nb_index_entries)++;
1157 ie = &entries[
index];
1158 assert(index == 0 || ie[-1].timestamp < timestamp);
1160 ie = &entries[
index];
1164 memmove(entries + index + 1, entries + index,
1166 (*nb_index_entries)++;
1167 }
else if (ie->
pos == pos && distance < ie->min_distance)
1186 timestamp, size, distance, flags);
1190 int64_t wanted_timestamp,
int flags)
1199 if (b && entries[b - 1].timestamp < wanted_timestamp)
1205 if (timestamp >= wanted_timestamp)
1207 if (timestamp <= wanted_timestamp)
1213 while (m >= 0 && m < nb_entries &&
1217 if (m == nb_entries)
1225 wanted_timestamp, flags);
1229 int64_t target_ts,
int flags)
1233 int64_t ts_min, ts_max, ts;
1238 if (stream_index < 0)
1241 av_dlog(s,
"read_seek: %d %"PRId64
"\n", stream_index, target_ts);
1247 st = s->
streams[stream_index];
1255 index =
FFMAX(index, 0);
1261 av_dlog(s,
"using cached pos_min=0x%"PRIx64
" dts_min=%"PRId64
"\n",
1269 assert(index < st->nb_index_entries);
1276 av_dlog(s,
"using cached pos_max=0x%"PRIx64
" pos_limit=0x%"PRIx64
1277 " dts_max=%"PRId64
"\n", pos_max, pos_limit, ts_max);
1281 pos =
ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit,
1296 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
1297 int64_t ts_min, int64_t ts_max,
1298 int flags, int64_t *ts_ret,
1300 int64_t *, int64_t))
1303 int64_t start_pos, filesize;
1306 av_dlog(s,
"gen_seek: %d %"PRId64
"\n", stream_index, target_ts);
1310 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1318 pos_max = filesize - 1;
1321 ts_max = read_timestamp(s, stream_index, &pos_max,
1329 int64_t tmp_pos = pos_max + 1;
1330 int64_t tmp_ts = read_timestamp(s, stream_index,
1331 &tmp_pos, INT64_MAX);
1336 if (tmp_pos >= filesize)
1339 pos_limit = pos_max;
1342 if (ts_min > ts_max)
1344 else if (ts_min == ts_max)
1345 pos_limit = pos_min;
1348 while (pos_min < pos_limit) {
1349 av_dlog(s,
"pos_min=0x%"PRIx64
" pos_max=0x%"PRIx64
" dts_min=%"PRId64
1350 " dts_max=%"PRId64
"\n", pos_min, pos_max, ts_min, ts_max);
1351 assert(pos_limit <= pos_max);
1353 if (no_change == 0) {
1354 int64_t approximate_keyframe_distance = pos_max - pos_limit;
1356 pos =
av_rescale(target_ts - ts_min, pos_max - pos_min,
1358 pos_min - approximate_keyframe_distance;
1359 }
else if (no_change == 1) {
1361 pos = (pos_min + pos_limit) >> 1;
1369 else if (pos > pos_limit)
1374 ts = read_timestamp(s, stream_index, &pos, INT64_MAX);
1379 av_dlog(s,
"%"PRId64
" %"PRId64
" %"PRId64
" / %"PRId64
" %"PRId64
" %"PRId64
1380 " target:%"PRId64
" limit:%"PRId64
" start:%"PRId64
" noc:%d\n",
1381 pos_min, pos, pos_max, ts_min, ts, ts_max, target_ts,
1382 pos_limit, start_pos, no_change);
1388 if (target_ts <= ts) {
1389 pos_limit = start_pos - 1;
1393 if (target_ts >= ts) {
1402 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1404 ts_max = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1405 av_dlog(s,
"pos=0x%"PRIx64
" %"PRId64
"<=%"PRId64
"<=%"PRId64
"\n",
1406 pos, ts_min, target_ts, ts_max);
1412 int64_t pos,
int flags)
1414 int64_t pos_min, pos_max;
1421 else if (pos > pos_max)
1430 int64_t timestamp,
int flags)
1437 st = s->
streams[stream_index];
1441 if (index < 0 && st->nb_index_entries &&
1442 timestamp < st->index_entries[0].timestamp)
1445 if (index < 0 || index == st->nb_index_entries - 1) {
1462 }
while (read_status ==
AVERROR(EAGAIN));
1463 if (read_status < 0)
1488 int64_t timestamp,
int flags)
1500 if (stream_index < 0) {
1502 if (stream_index < 0)
1505 st = s->
streams[stream_index];
1532 int64_t timestamp,
int flags)
1543 int64_t ts, int64_t max_ts,
int flags)
1545 if (min_ts > ts || max_ts < ts)
1567 flags | ((uint64_t) ts - min_ts >
1568 (uint64_t) max_ts - ts
1603 int64_t
start_time, start_time1, end_time, end_time1;
1604 int64_t
duration, duration1, filesize;
1608 start_time = INT64_MAX;
1609 end_time = INT64_MIN;
1610 duration = INT64_MIN;
1616 start_time =
FFMIN(start_time, start_time1);
1618 end_time1 = start_time1 +
1621 end_time =
FFMAX(end_time, end_time1);
1627 duration =
FFMAX(duration, duration1);
1630 if (start_time != INT64_MAX) {
1632 if (end_time != INT64_MIN)
1633 duration =
FFMAX(duration, end_time - start_time);
1635 if (duration != INT64_MIN) {
1702 #define DURATION_MAX_READ_SIZE 250000 1703 #define DURATION_MAX_RETRY 3 1710 int read_size, i, ret;
1712 int64_t filesize, offset,
duration;
1722 "start time is not set in estimate_timings_from_pts\n");
1747 }
while (ret ==
AVERROR(EAGAIN));
1750 read_size += pkt->
size;
1755 duration = end_time = pkt->
pts;
1792 file_size =
FFMAX(0, file_size);
1806 "Estimating duration from bitrate, this may be inaccurate\n");
1817 av_dlog(ic,
"%d: start_time: %0.3f duration: %0.3f\n", i,
1822 "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
1864 int got_picture = 1, ret = 0;
1885 av_dict_set(options ? options : &thread_opt,
"threads",
"1", 0);
1902 while ((pkt.
size > 0 || (!pkt.
data && got_picture)) &&
1911 &got_picture, &pkt);
1947 if (tag == tags[i].tag)
1968 if (sflags & (1 << (bps - 1))) {
2001 for (i = 0; tags && tags[i]; i++) {
2012 for (i = 0; tags && tags[i]; i++) {
2037 if (j != i && next_start > ch->
start && next_start < end)
2040 ch->
end = (end == INT64_MAX) ? ch->
start : end;
2047 return (i + 1) * 1001;
2049 return ((
const int[]) { 24, 30, 60, 12, 15 })[i - 60 * 12] * 1000 * 12;
2054 int i, count, ret, read_size, j;
2077 av_dict_set(options ? &options[i] : &thread_opt,
"threads",
"1", 0);
2083 options ? &options[i] : &thread_opt);
2089 options ? &options[i] : &thread_opt);
2111 int fps_analyze_framecount = 20;
2120 fps_analyze_framecount *= 2;
2150 "Probe buffer size limit %d reached\n", ic->
probesize);
2175 (options && i < orig_nb_streams)
2176 ? &options[i] :
NULL);
2182 "decoding for stream %d failed\n", st->
index);
2187 "Could not find codec parameters (%s)\n", buf);
2201 goto find_stream_info_err;
2204 read_size += pkt->
size;
2212 "Non-increasing DTS in stream %d: packet %d with DTS " 2213 "%"PRId64
", packet %d with DTS %"PRId64
"\n",
2229 "DTS discontinuity in stream %d: packet %d with DTS " 2230 "%"PRId64
", packet %d with DTS %"PRId64
"\n",
2277 (options && i < orig_nb_streams) ? &options[i] :
NULL);
2299 double best_error = 0.01;
2316 if (error < best_error) {
2318 best_fps = std_fps.
num;
2323 best_fps, 12 * 1001, INT_MAX);
2354 find_stream_info_err:
2374 int wanted_stream_nb,
int related_stream,
2375 AVCodec **decoder_ret,
int flags)
2379 unsigned *program =
NULL;
2382 if (related_stream >= 0 && wanted_stream_nb < 0) {
2389 for (i = 0; i < nb_streams; i++) {
2390 int real_stream_index = program ? program[i] : i;
2395 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
2411 ret = real_stream_index;
2413 if (program && i == nb_streams - 1 && ret < 0) {
2421 *decoder_ret = best_decoder;
2583 av_dlog(ac,
"new_program: id=0x%04x\n",
id);
2602 int64_t start, int64_t end,
const char *title)
2620 chapter->
start = start;
2663 char *q, buf1[20], c;
2664 int nd,
len, percentd_found;
2677 nd = nd * 10 + *p++ -
'0';
2688 snprintf(buf1,
sizeof(buf1),
"%0*d", nd, number);
2690 if ((q - buf + len) > buf_size - 1)
2692 memcpy(q, buf1, len);
2700 if ((q - buf) < buf_size - 1)
2704 if (!percentd_found)
2714 char *authorization,
int authorization_size,
2715 char *hostname,
int hostname_size,
2716 int *port_ptr,
char *path,
int path_size,
const char *url)
2718 const char *p, *ls, *at, *col, *brk;
2724 if (authorization_size > 0)
2725 authorization[0] = 0;
2726 if (hostname_size > 0)
2732 if ((p = strchr(url,
':'))) {
2746 ls = strchr(p,
'/');
2748 ls = strchr(p,
'?');
2757 if ((at = strchr(p,
'@')) && at < ls) {
2759 FFMIN(authorization_size, at + 1 - p));
2763 if (*p ==
'[' && (brk = strchr(p,
']')) && brk < ls) {
2766 FFMIN(hostname_size, brk - p));
2767 if (brk[1] ==
':' && port_ptr)
2768 *port_ptr = atoi(brk + 2);
2769 }
else if ((col = strchr(p,
':')) && col < ls) {
2771 FFMIN(col + 1 - p, hostname_size));
2773 *port_ptr = atoi(col + 1);
2776 FFMIN(ls + 1 - p, hostname_size));
2783 static const char hex_table_uc[16] = {
'0',
'1',
'2',
'3',
2786 'C',
'D',
'E',
'F' };
2787 static const char hex_table_lc[16] = {
'0',
'1',
'2',
'3',
2790 'c',
'd',
'e',
'f' };
2791 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
2793 for (i = 0; i < s; i++) {
2794 buff[i * 2] = hex_table[src[i] >> 4];
2795 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
2812 if (c >=
'0' && c <=
'9')
2814 else if (c >=
'A' && c <=
'F')
2830 unsigned int pts_num,
unsigned int pts_den)
2834 if (new_tb.
num != pts_num)
2836 "st:%d removing common factor %d from timebase\n",
2840 "st:%d has too large timebase, reducing\n", s->
index);
2842 if (new_tb.
num <= 0 || new_tb.
den <= 0) {
2844 "Ignoring attempt to set invalid timebase for st:%d\n",
2855 const char *ptr = str;
2860 char *dest =
NULL, *dest_end;
2861 int key_len, dest_len = 0;
2864 while (*ptr && (
av_isspace(*ptr) || *ptr ==
','))
2871 if (!(ptr = strchr(key,
'=')))
2874 key_len = ptr - key;
2876 callback_get_buf(context, key, key_len, &dest, &dest_len);
2877 dest_end = dest + dest_len - 1;
2881 while (*ptr && *ptr !=
'\"') {
2885 if (dest && dest < dest_end)
2889 if (dest && dest < dest_end)
2897 for (; *ptr && !(
av_isspace(*ptr) || *ptr ==
','); ptr++)
2898 if (dest && dest < dest_end)
2918 struct tm time1 = { 0 }, time2 = { 0 };
2920 ret1 = strptime(datestr,
"%Y - %m - %d %T", &time1);
2921 ret2 = strptime(datestr,
"%Y - %m - %dT%T", &time2);
2928 "strptime() unavailable on this system, cannot convert " 2929 "the date string.\n");
2939 return ofmt->
query_codec(codec_id, std_compliance);
2972 uint64_t channel_layout,
int32_t sample_rate,
2984 if (channel_layout) {
2992 if (width || height) {
2999 bytestream_put_le32(&data, flags);
3001 bytestream_put_le32(&data, channels);
3003 bytestream_put_le64(&data, channel_layout);
3005 bytestream_put_le32(&data, sample_rate);
3006 if (width || height) {
3007 bytestream_put_le32(&data, width);
3008 bytestream_put_le32(&data, height);
3015 static const uint8_t avci100_1080p_extradata[] = {
3017 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
3018 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
3019 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
3020 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
3021 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
3022 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
3023 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
3024 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
3025 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
3027 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
3030 static const uint8_t avci100_1080i_extradata[] = {
3032 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
3033 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
3034 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
3035 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
3036 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
3037 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
3038 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
3039 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
3040 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
3041 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
3042 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x00,
3044 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
3047 static const uint8_t avci50_1080i_extradata[] = {
3049 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
3050 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
3051 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
3052 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
3053 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
3054 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
3055 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
3056 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
3057 0x81, 0x13, 0xf7, 0xff, 0x80, 0x01, 0x80, 0x02,
3058 0x71, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
3059 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
3061 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
3064 static const uint8_t avci100_720p_extradata[] = {
3066 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
3067 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
3068 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
3069 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
3070 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
3071 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
3072 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
3073 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
3074 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
3075 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
3077 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
3086 data = avci100_1080p_extradata;
3087 size =
sizeof(avci100_1080p_extradata);
3089 data = avci100_1080i_extradata;
3090 size =
sizeof(avci100_1080i_extradata);
3093 data = avci50_1080i_extradata;
3094 size =
sizeof(avci50_1080i_extradata);
3096 data = avci100_720p_extradata;
3097 size =
sizeof(avci100_720p_extradata);
unsigned int nb_chapters
Number of chapters in AVChapter array.
time_t av_timegm(struct tm *tm)
Convert the decomposed UTC time in tm to a time_t value.
unsigned int max_index_size
Maximum amount of memory in bytes to use for the index of each stream.
void av_url_split(char *proto, int proto_size, char *authorization, int authorization_size, char *hostname, int hostname_size, int *port_ptr, char *path, int path_size, const char *url)
Split a URL string into components.
codec_id is not known (like AV_CODEC_ID_NONE) but lavf should attempt to identify it ...
int av_opt_get_dict_val(void *obj, const char *name, int search_flags, AVDictionary **out_val)
const struct AVCodec * codec
#define AV_CODEC_PROP_INTRA_ONLY
Codec uses only intra compression.
int64_t avio_size(AVIOContext *s)
Get the filesize.
void av_free_packet(AVPacket *pkt)
Free a packet.
This structure describes decoded (raw) audio or video data.
AVIOInterruptCB interrupt_callback
Custom interrupt callbacks for the I/O layer.
int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp, int size, int distance, int flags)
Add an index entry into a sorted list.
int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding rnd)
Rescale a 64-bit integer with specified rounding.
#define AV_LOG_WARNING
Something somehow does not look correct.
int64_t pos
byte position in stream, -1 if unknown
int avformat_open_input(AVFormatContext **ps, const char *filename, AVInputFormat *fmt, AVDictionary **options)
Open an input stream and read the header.
void av_shrink_packet(AVPacket *pkt, int size)
Reduce packet size, correctly zeroing padding.
int64_t pts_buffer[MAX_REORDER_DELAY+1]
void av_opt_set_defaults(void *s)
Set the values of all AVOption fields to their default values.
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
int index
stream index in AVFormatContext
#define ID3v2_DEFAULT_MAGIC
Default magic bytes for ID3v2 header: "ID3".
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
#define AVIO_FLAG_READ
read-only
AVIndexEntry * index_entries
Only used if the format does not support seeking natively.
AVFormatInternal * internal
An opaque field for libavformat internal usage.
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
uint8_t * av_stream_get_side_data(AVStream *st, enum AVPacketSideDataType type, int *size)
Get side information from stream.
void ff_network_close(void)
int av_isdigit(int c)
Locale-independent conversion of ASCII isdigit.
int event_flags
Flags for the user to detect events happening on the file.
int(* split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size)
int64_t data_offset
offset of the first packet
int duration
Duration of the current frame.
AVPacketSideData * side_data
An array of side data that applies to the whole stream (i.e.
int ctx_flags
Flags signalling stream properties.
int av_opt_set_dict_val(void *obj, const char *name, const AVDictionary *val, int search_flags)
int av_dup_packet(AVPacket *pkt)
int ff_id3v2_parse_apic(AVFormatContext *s, ID3v2ExtraMeta **extra_meta)
Create a stream for each APIC (attached picture) extracted from the ID3v2 header. ...
enum AVCodecID subtitle_codec_id
Forced subtitle codec_id.
struct AVPacketList * packet_buffer
This buffer is only needed when packets were already buffered but not decoded, for example to get the...
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
void av_freep(void *arg)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
enum AVAudioServiceType audio_service_type
Type of service that the audio stream conveys.
unsigned int nb_stream_indexes
av_dlog(ac->avr, "%d samples - audio_convert: %s to %s (%s)\, len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt), use_generic ? ac->func_descr_generic :ac->func_descr)
int ff_network_inited_globally
#define av_assert0(cond)
assert() equivalent, that is always enabled.
enum AVSampleFormat sample_fmt
audio sample format
struct AVStream::@93 * info
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
int ff_network_init(void)
unsigned avformat_version(void)
Return the LIBAVFORMAT_VERSION_INT constant.
const char * avformat_license(void)
Return the libavformat license.
int id
unique ID to identify the chapter
int id
Format-specific stream ID.
enum AVStreamParseType need_parsing
int nb_side_data
The number of elements in the AVStream.side_data array.
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
AVStream ** streams
A list of all streams in the file.
AVFormatContext * avformat_alloc_context(void)
Allocate an AVFormatContext.
const char * avformat_configuration(void)
Return the libavformat build-time configuration.
static double av_q2d(AVRational a)
Convert rational to double.
int flags
Flags modifying the (de)muxer behaviour.
int av_reallocp(void *ptr, size_t size)
Allocate or reallocate a block of memory.
AVProgram * av_new_program(AVFormatContext *ac, int id)
int avformat_network_init(void)
Do global initialization of network components.
attribute_deprecated void(* destruct)(struct AVPacket *)
int fps_probe_size
The number of frames used for determining the framerate in avformat_find_stream_info().
static void copy(LZOContext *c, int cnt)
Copies bytes from input to output buffer with checking.
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
enum AVDiscard discard
selects which program to discard and which to feed to the caller
static AVPacket flush_pkt
int duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
void av_dict_copy(AVDictionary **dst, const AVDictionary *src, int flags)
Copy entries from one AVDictionary struct into another.
unsigned int * stream_index
enum AVCodecID video_codec_id
Forced video codec_id.
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
const OptionDef options[]
struct AVPacketList * raw_packet_buffer
Raw packets from the demuxer, prior to parsing and decoding.
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
static const uint8_t frame_size[4]
int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type, int wanted_stream_nb, int related_stream, AVCodec **decoder_ret, int flags)
Find the "best" stream in the file.
av_cold int avcodec_close(AVCodecContext *avctx)
Close a given AVCodecContext and free all the data associated with it (but not the AVCodecContext its...
static int64_t start_time
int av_reallocp_array(void *ptr, size_t nmemb, size_t size)
AVCodecID
Identify the syntax and semantics of the bitstream.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
AVDictionary * metadata
Metadata that applies to the whole file.
int has_b_frames
Size of the frame reordering buffer in the decoder.
void av_free(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc(). ...
int64_t pos
Byte position of currently parsed frame in stream.
int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp, int flags)
Get the index for a specific timestamp.
void * av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
Reallocate the given block if it is not large enough, otherwise do nothing.
struct AVCodecParser * parser
An AV_PKT_DATA_PARAM_CHANGE side data packet is laid out as follows:
unsigned int avpriv_toupper4(unsigned int x)
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
int avio_close(AVIOContext *s)
Close the resource accessed by the AVIOContext s and free it.
int avcodec_is_open(AVCodecContext *s)
int64_t convergence_duration
Time difference in AVStream->time_base units from the pts of this packet to the point at which the ou...
int capabilities
Codec capabilities.
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
int av_read_play(AVFormatContext *s)
Start playing a network-based stream (e.g.
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values. ...
preferred ID for decoding MPEG audio layer 1, 2 or 3
AVBufferRef * buf
A reference to the reference-counted buffer where the packet data is stored.
void ff_id3v2_free_extra_meta(ID3v2ExtraMeta **extra_meta)
Free memory allocated parsing special (non-text) metadata.
simple assert() macros that are a bit more flexible than ISO C assert().
enum AVPacketSideDataType type
void av_log(void *avcl, int level, const char *fmt,...)
int av_isspace(int c)
Locale-independent conversion of ASCII isspace.
AVRational avg_frame_rate
Average framerate.
New fields can be added to the end with minor version bumps.
AVInputFormat * av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max)
Guess the file format.
int min_distance
Minimum distance between this and the previous keyframe, used to avoid unneeded searching.
size_t av_strlcpy(char *dst, const char *src, size_t size)
Copy the string src to dst, but no more than size - 1 bytes, and null-terminate dst.
int flags
A combination of AV_PKT_FLAG values.
const AVCodecDescriptor * avcodec_descriptor_get(enum AVCodecID id)
AVCodecContext * codec
Codec context associated with this stream.
int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id, int std_compliance)
Test if the given container can store a codec.
static float distance(float x, float y, int band)
int props
Codec properties, a combination of AV_CODEC_PROP_* flags.
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
int buf_size
Size of buf except extra allocated bytes.
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
common internal API header
#define FF_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
#define FF_MAX_EXTRADATA_SIZE
Maximum size in bytes of extradata.
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
int64_t fps_first_dts
Those are used for average framerate estimation.
int av_read_pause(AVFormatContext *s)
Pause a network-based stream (e.g.
int64_t av_rescale_q_rnd(int64_t a, AVRational bq, AVRational cq, enum AVRounding rnd)
Rescale a 64-bit integer by 2 rational numbers with specified rounding.
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
int bit_rate
the average bitrate
char filename[1024]
input or output filename
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
#define AV_TIME_BASE
Internal time base represented as integer.
enum AVCodecID audio_codec_id
Forced audio codec_id.
AVCodecContext * avcodec_alloc_context3(const AVCodec *codec)
Allocate an AVCodecContext and set its fields to default values.
#define AV_OPT_SEARCH_CHILDREN
Search in possible children of the given object first.
int av_parser_parse2(AVCodecParserContext *s, AVCodecContext *avctx, uint8_t **poutbuf, int *poutbuf_size, const uint8_t *buf, int buf_size, int64_t pts, int64_t dts, int64_t pos)
Parse a packet.
static const chunk_decoder decoder[8]
int width
picture width / height.
int64_t offset
byte offset from starting packet start
int av_find_default_stream_index(AVFormatContext *s)
int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt, const char *filename, void *logctx, unsigned int offset, unsigned int max_probe_size)
Probe a bytestream to determine the input format.
int64_t convergence_duration
Time difference in stream time base units from the pts of this packet to the point at which the outpu...
internal header for RIFF based (de)muxers do NOT include this in end user applications ...
void av_parser_close(AVCodecParserContext *s)
int ticks_per_frame
For some codecs, the time base is closer to the field rate than the frame rate.
#define AVERROR_EXIT
Immediate exit was requested; the called function should not be restarted.
unsigned int probesize
Maximum size of the data read from input for determining the input container format.
preferred ID for MPEG-1/2 video decoding
int thread_count
thread count is used to decide how many independent tasks should be passed to execute() ...
int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
Return in 'buf' the path with 'd' replaced by a number.
void ff_id3v2_read(AVFormatContext *s, const char *magic, ID3v2ExtraMeta **extra_meta)
Read an ID3v2 tag, including supported extra metadata.
int raw_packet_buffer_remaining_size
int64_t av_gettime(void)
Get the current time in microseconds.
#define AVERROR_PATCHWELCOME
Not yet implemented in Libav, patches welcome.
int64_t end
chapter start/end time in time_base units
int avformat_network_deinit(void)
Undo the initialization done by avformat_network_init.
int frame_size
Number of samples per channel in an audio frame.
AVCodecParserContext * av_parser_init(int codec_id)
enum AVMediaType codec_type
int ff_check_interrupt(AVIOInterruptCB *cb)
Check if the user has requested to interrup a blocking function associated with cb.
int debug
Flags to enable debugging.
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
int av_opt_set_dict(void *obj, AVDictionary **options)
int sample_rate
samples per second
AVIOContext * pb
I/O context.
main external API structure.
AVCodec * avcodec_find_decoder(enum AVCodecID id)
Find a registered decoder with a matching codec ID.
int av_filename_number_test(const char *filename)
Check whether filename actually is a numbered sequence generator.
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Describe the class of an AVClass context structure.
rational number numerator/denominator
struct AVPacketList * packet_buffer_end
int avio_open2(AVIOContext **s, const char *url, int flags, const AVIOInterruptCB *int_cb, AVDictionary **options)
Create and initialize a AVIOContext for accessing the resource indicated by url.
int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
Initialize the AVCodecContext to use the given AVCodec.
void avformat_free_context(AVFormatContext *s)
Free an AVFormatContext and all its streams.
This structure contains the data a format has to probe a file.
int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
Return audio frame duration.
int av_read_frame(AVFormatContext *s, AVPacket *pkt)
Return the next frame of a stream.
int avio_pause(AVIOContext *h, int pause)
Pause and resume playing - only meaningful if using a network streaming protocol (e.g.
int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
Seek to timestamp ts.
This struct describes the properties of a single codec described by an AVCodecID. ...
struct AVPacketList * parse_queue_end
struct AVPacketList * parse_queue
Packets split by the parser get queued here.
int64_t start_time
Position of the first frame of the component, in AV_TIME_BASE fractional seconds. ...
int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
Seek to the keyframe at timestamp.
int64_t duration
Decoding: duration of the stream, in stream time base.
static int av_toupper(int c)
Locale-independent conversion of ASCII characters to uppercase.
AVPacketSideData * side_data
Additional packet data that can be provided by the container.
void av_opt_free(void *obj)
Free all allocated objects in obj.
#define FF_DISABLE_DEPRECATION_WARNINGS
common internal api header.
struct AVPacketList * next
#define CODEC_CAP_CHANNEL_CONF
Codec should fill in channel configuration and samplerate instead of container.
int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
Read packets of a media file to get stream information.
int64_t start_time
Decoding: pts of the first frame of the stream, in stream time base.
int disposition
AV_DISPOSITION_* bit field.
AVBufferRef * av_buffer_ref(AVBufferRef *buf)
Create a new reference to an AVBuffer.
int pts_wrap_bits
number of bits in pts (used for wrapping control)
AVRational time_base
time base in which the start/end timestamps are specified
#define PARSER_FLAG_COMPLETE_FRAMES
int av_grow_packet(AVPacket *pkt, int grow_by)
Increase packet size, correctly zeroing padding.
void av_init_packet(AVPacket *pkt)
Initialize optional fields of a packet with default values.
#define AV_PKT_FLAG_CORRUPT
The packet content is corrupted.
int max_analyze_duration
Maximum duration (in AV_TIME_BASE units) of the data read from input in avformat_find_stream_info().
struct AVInputFormat * iformat
The input container format.
void avformat_close_input(AVFormatContext **ps)
Close an opened input AVFormatContext.
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
unsigned int index_entries_allocated_size
#define AVERROR_DECODER_NOT_FOUND
Decoder not found.
#define FF_ENABLE_DEPRECATION_WARNINGS
int channels
number of audio channels
struct AVCodecParserContext * parser
void * priv_data
Format private data.
int codec_info_nb_frames
Number of frames that have been demuxed during av_find_stream_info()
#define AVERROR_STREAM_NOT_FOUND
Stream not found.
int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture, int *got_picture_ptr, AVPacket *avpkt)
Decode the video frame of size avpkt->size from avpkt->data into picture.
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
int bit_rate
Total stream bitrate in bit/s, 0 if not available.
int repeat_pict
This field is used for proper frame duration computation in lavf.
int64_t duration
Duration of the stream, in AV_TIME_BASE fractional seconds.
enum AVFieldOrder field_order
Field order.
unbuffered private I/O API
#define FFSWAP(type, a, b)
uint8_t * av_packet_new_side_data(AVPacket *pkt, enum AVPacketSideDataType type, int size)
Allocate new information of a packet.
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
enum AVDiscard discard
Selects which packets can be discarded at will and do not need to be demuxed.
AVInputFormat * av_probe_input_format(AVProbeData *pd, int is_opened)
Guess the file format.
struct AVPacketList * raw_packet_buffer_end
This structure stores compressed data.
int key_frame
Set by parser to 1 for key frames and 0 for non-key frames.
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
AVPacket attached_pic
For streams with AV_DISPOSITION_ATTACHED_PIC disposition, this packet will contain the attached pictu...
#define AV_NOPTS_VALUE
Undefined timestamp value.
int64_t av_compare_mod(uint64_t a, uint64_t b, uint64_t mod)
Compare 2 integers modulo mod.
uint8_t * subtitle_header
Header containing style information for text subtitles.
int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx, AVFrame *frame, int *got_frame_ptr, AVPacket *avpkt)
Decode the audio frame of size avpkt->size from avpkt->data into frame.