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",
492 if (frame_size <= 0 || st->codec->sample_rate <= 0)
513 int64_t dts, int64_t pts)
526 for (; pktl; pktl = pktl->
next) {
551 for (; pktl; pktl = pktl->
next) {
565 for (; pktl; pktl = pktl->
next) {
587 int num, den, presentation_delayed, delay, i;
598 presentation_delayed = 0;
604 presentation_delayed = 1;
616 if (delay == 1 && pkt->
dts == pkt->
pts &&
650 presentation_delayed = 1;
653 "IN delayed:%d pts:%"PRId64
", dts:%"PRId64
" "
654 "cur_dts:%"PRId64
" st:%d pc:%p\n",
659 if ((delay == 0 || (delay == 1 && pc)) &&
661 if (presentation_delayed) {
729 "OUTdelayed:%d/%d pts:%"PRId64
", dts:%"PRId64
" cur_dts:%"PRId64
"\n",
730 presentation_delayed, delay, pkt->
pts, pkt->
dts, st->
cur_dts);
743 *pkt_buf = pktl->
next;
761 int ret = 0, got_output = 0;
769 while (size > 0 || (pkt == &
flush_pkt && got_output)) {
774 &out_pkt.
data, &out_pkt.
size, data, size,
782 got_output = !!out_pkt.
size;
828 #if FF_API_DESTRUCT_PACKET
864 *pkt_buffer = pktl->
next;
866 *pkt_buffer_end =
NULL;
873 int ret = 0, i, got_packet = 0;
902 cur_pkt.
pts < cur_pkt.
dts) {
904 "Invalid timestamps stream=%d, pts=%"PRId64
", "
905 "dts=%"PRId64
", size=%d\n",
911 "ff_read_packet stream=%d, pts=%"PRId64
", dts=%"PRId64
", "
912 "size=%d, duration=%d, flags=%d\n",
960 "read_frame_internal stream=%d, pts=%"PRId64
", dts=%"PRId64
", "
961 "size=%d, duration=%d, flags=%d\n",
1009 if (pktl && ret !=
AVERROR(EAGAIN)) {
1037 int first_audio_index = -1;
1049 if (first_audio_index < 0 &&
1051 first_audio_index = i;
1053 return first_audio_index >= 0 ? first_audio_index : 0;
1111 int *nb_index_entries,
1112 unsigned int *index_entries_allocated_size,
1113 int64_t pos, int64_t timestamp,
1119 if ((
unsigned) *nb_index_entries + 1 >= UINT_MAX /
sizeof(
AVIndexEntry))
1123 index_entries_allocated_size,
1124 (*nb_index_entries + 1) *
1129 *index_entries = entries;
1135 index = (*nb_index_entries)++;
1136 ie = &entries[
index];
1137 assert(index == 0 || ie[-1].timestamp < timestamp);
1139 ie = &entries[
index];
1143 memmove(entries + index + 1, entries + index,
1145 (*nb_index_entries)++;
1146 }
else if (ie->
pos == pos && distance < ie->min_distance)
1165 timestamp, size, distance, flags);
1169 int64_t wanted_timestamp,
int flags)
1178 if (b && entries[b - 1].timestamp < wanted_timestamp)
1184 if (timestamp >= wanted_timestamp)
1186 if (timestamp <= wanted_timestamp)
1192 while (m >= 0 && m < nb_entries &&
1196 if (m == nb_entries)
1204 wanted_timestamp, flags);
1208 int64_t target_ts,
int flags)
1212 int64_t ts_min, ts_max, ts;
1217 if (stream_index < 0)
1220 av_dlog(s,
"read_seek: %d %"PRId64
"\n", stream_index, target_ts);
1226 st = s->
streams[stream_index];
1234 index =
FFMAX(index, 0);
1240 av_dlog(s,
"using cached pos_min=0x%"PRIx64
" dts_min=%"PRId64
"\n",
1248 assert(index < st->nb_index_entries);
1255 av_dlog(s,
"using cached pos_max=0x%"PRIx64
" pos_limit=0x%"PRIx64
1256 " dts_max=%"PRId64
"\n", pos_max, pos_limit, ts_max);
1260 pos =
ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit,
1275 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
1276 int64_t ts_min, int64_t ts_max,
1277 int flags, int64_t *ts_ret,
1279 int64_t *, int64_t))
1282 int64_t start_pos, filesize;
1285 av_dlog(s,
"gen_seek: %d %"PRId64
"\n", stream_index, target_ts);
1289 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1297 pos_max = filesize - 1;
1300 ts_max = read_timestamp(s, stream_index, &pos_max,
1308 int64_t tmp_pos = pos_max + 1;
1309 int64_t tmp_ts = read_timestamp(s, stream_index,
1310 &tmp_pos, INT64_MAX);
1315 if (tmp_pos >= filesize)
1318 pos_limit = pos_max;
1321 if (ts_min > ts_max)
1323 else if (ts_min == ts_max)
1324 pos_limit = pos_min;
1327 while (pos_min < pos_limit) {
1328 av_dlog(s,
"pos_min=0x%"PRIx64
" pos_max=0x%"PRIx64
" dts_min=%"PRId64
1329 " dts_max=%"PRId64
"\n", pos_min, pos_max, ts_min, ts_max);
1330 assert(pos_limit <= pos_max);
1332 if (no_change == 0) {
1333 int64_t approximate_keyframe_distance = pos_max - pos_limit;
1335 pos =
av_rescale(target_ts - ts_min, pos_max - pos_min,
1337 pos_min - approximate_keyframe_distance;
1338 }
else if (no_change == 1) {
1340 pos = (pos_min + pos_limit) >> 1;
1348 else if (pos > pos_limit)
1353 ts = read_timestamp(s, stream_index, &pos, INT64_MAX);
1358 av_dlog(s,
"%"PRId64
" %"PRId64
" %"PRId64
" / %"PRId64
" %"PRId64
" %"PRId64
1359 " target:%"PRId64
" limit:%"PRId64
" start:%"PRId64
" noc:%d\n",
1360 pos_min, pos, pos_max, ts_min, ts, ts_max, target_ts,
1361 pos_limit, start_pos, no_change);
1367 if (target_ts <= ts) {
1368 pos_limit = start_pos - 1;
1372 if (target_ts >= ts) {
1381 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1383 ts_max = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1384 av_dlog(s,
"pos=0x%"PRIx64
" %"PRId64
"<=%"PRId64
"<=%"PRId64
"\n",
1385 pos, ts_min, target_ts, ts_max);
1391 int64_t pos,
int flags)
1393 int64_t pos_min, pos_max;
1400 else if (pos > pos_max)
1409 int64_t timestamp,
int flags)
1416 st = s->
streams[stream_index];
1420 if (index < 0 && st->nb_index_entries &&
1421 timestamp < st->index_entries[0].timestamp)
1424 if (index < 0 || index == st->nb_index_entries - 1) {
1441 }
while (read_status ==
AVERROR(EAGAIN));
1442 if (read_status < 0)
1467 int64_t timestamp,
int flags)
1479 if (stream_index < 0) {
1481 if (stream_index < 0)
1484 st = s->
streams[stream_index];
1511 int64_t timestamp,
int flags)
1522 int64_t ts, int64_t max_ts,
int flags)
1524 if (min_ts > ts || max_ts < ts)
1546 flags | ((uint64_t) ts - min_ts >
1547 (uint64_t) max_ts - ts
1582 int64_t
start_time, start_time1, end_time, end_time1;
1583 int64_t
duration, duration1, filesize;
1587 start_time = INT64_MAX;
1588 end_time = INT64_MIN;
1589 duration = INT64_MIN;
1595 start_time =
FFMIN(start_time, start_time1);
1597 end_time1 = start_time1 +
1600 end_time =
FFMAX(end_time, end_time1);
1606 duration =
FFMAX(duration, duration1);
1609 if (start_time != INT64_MAX) {
1611 if (end_time != INT64_MIN)
1612 duration =
FFMAX(duration, end_time - start_time);
1614 if (duration != INT64_MIN) {
1681 #define DURATION_MAX_READ_SIZE 250000
1682 #define DURATION_MAX_RETRY 3
1689 int read_size, i, ret;
1691 int64_t filesize, offset,
duration;
1701 "start time is not set in estimate_timings_from_pts\n");
1726 }
while (ret ==
AVERROR(EAGAIN));
1729 read_size += pkt->
size;
1734 duration = end_time = pkt->
pts;
1771 file_size =
FFMAX(0, file_size);
1785 "Estimating duration from bitrate, this may be inaccurate\n");
1796 av_dlog(ic,
"%d: start_time: %0.3f duration: %0.3f\n", i,
1801 "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
1843 int got_picture = 1, ret = 0;
1864 av_dict_set(options ? options : &thread_opt,
"threads",
"1", 0);
1881 while ((pkt.
size > 0 || (!pkt.
data && got_picture)) &&
1890 &got_picture, &pkt);
1926 if (tag == tags[i].tag)
1947 if (sflags & (1 << (bps - 1))) {
1980 for (i = 0; tags && tags[i]; i++) {
1991 for (i = 0; tags && tags[i]; i++) {
2016 if (j != i && next_start > ch->
start && next_start < end)
2019 ch->
end = (end == INT64_MAX) ? ch->
start : end;
2026 return (i + 1) * 1001;
2028 return ((
const int[]) { 24, 30, 60, 12, 15 })[i - 60 * 12] * 1000 * 12;
2033 int i, count, ret, read_size, j;
2056 av_dict_set(options ? &options[i] : &thread_opt,
"threads",
"1", 0);
2062 options ? &options[i] : &thread_opt);
2068 options ? &options[i] : &thread_opt);
2090 int fps_analyze_framecount = 20;
2099 fps_analyze_framecount *= 2;
2129 "Probe buffer size limit %d reached\n", ic->
probesize);
2154 (options && i < orig_nb_streams)
2155 ? &options[i] :
NULL);
2161 "decoding for stream %d failed\n", st->
index);
2166 "Could not find codec parameters (%s)\n", buf);
2180 goto find_stream_info_err;
2183 read_size += pkt->
size;
2191 "Non-increasing DTS in stream %d: packet %d with DTS "
2192 "%"PRId64
", packet %d with DTS %"PRId64
"\n",
2208 "DTS discontinuity in stream %d: packet %d with DTS "
2209 "%"PRId64
", packet %d with DTS %"PRId64
"\n",
2256 (options && i < orig_nb_streams) ? &options[i] :
NULL);
2278 double best_error = 0.01;
2295 if (error < best_error) {
2297 best_fps = std_fps.
num;
2302 best_fps, 12 * 1001, INT_MAX);
2333 find_stream_info_err:
2353 int wanted_stream_nb,
int related_stream,
2354 AVCodec **decoder_ret,
int flags)
2358 unsigned *program =
NULL;
2361 if (related_stream >= 0 && wanted_stream_nb < 0) {
2368 for (i = 0; i < nb_streams; i++) {
2369 int real_stream_index = program ? program[i] : i;
2374 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
2390 ret = real_stream_index;
2392 if (program && i == nb_streams - 1 && ret < 0) {
2400 *decoder_ret = best_decoder;
2554 av_dlog(ac,
"new_program: id=0x%04x\n",
id);
2573 int64_t start, int64_t end,
const char *title)
2591 chapter->
start = start;
2634 char *q, buf1[20], c;
2635 int nd,
len, percentd_found;
2648 nd = nd * 10 + *p++ -
'0';
2659 snprintf(buf1,
sizeof(buf1),
"%0*d", nd, number);
2661 if ((q - buf + len) > buf_size - 1)
2663 memcpy(q, buf1, len);
2671 if ((q - buf) < buf_size - 1)
2675 if (!percentd_found)
2685 char *authorization,
int authorization_size,
2686 char *hostname,
int hostname_size,
2687 int *port_ptr,
char *path,
int path_size,
const char *url)
2689 const char *p, *ls, *at, *col, *brk;
2695 if (authorization_size > 0)
2696 authorization[0] = 0;
2697 if (hostname_size > 0)
2703 if ((p = strchr(url,
':'))) {
2717 ls = strchr(p,
'/');
2719 ls = strchr(p,
'?');
2728 if ((at = strchr(p,
'@')) && at < ls) {
2730 FFMIN(authorization_size, at + 1 - p));
2734 if (*p ==
'[' && (brk = strchr(p,
']')) && brk < ls) {
2737 FFMIN(hostname_size, brk - p));
2738 if (brk[1] ==
':' && port_ptr)
2739 *port_ptr = atoi(brk + 2);
2740 }
else if ((col = strchr(p,
':')) && col < ls) {
2742 FFMIN(col + 1 - p, hostname_size));
2744 *port_ptr = atoi(col + 1);
2747 FFMIN(ls + 1 - p, hostname_size));
2754 static const char hex_table_uc[16] = {
'0',
'1',
'2',
'3',
2757 'C',
'D',
'E',
'F' };
2758 static const char hex_table_lc[16] = {
'0',
'1',
'2',
'3',
2761 'c',
'd',
'e',
'f' };
2762 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
2764 for (i = 0; i < s; i++) {
2765 buff[i * 2] = hex_table[src[i] >> 4];
2766 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
2783 if (c >=
'0' && c <=
'9')
2785 else if (c >=
'A' && c <=
'F')
2801 unsigned int pts_num,
unsigned int pts_den)
2805 if (new_tb.
num != pts_num)
2807 "st:%d removing common factor %d from timebase\n",
2811 "st:%d has too large timebase, reducing\n", s->
index);
2813 if (new_tb.
num <= 0 || new_tb.
den <= 0) {
2815 "Ignoring attempt to set invalid timebase for st:%d\n",
2826 const char *ptr = str;
2831 char *dest =
NULL, *dest_end;
2832 int key_len, dest_len = 0;
2835 while (*ptr && (
av_isspace(*ptr) || *ptr ==
','))
2842 if (!(ptr = strchr(key,
'=')))
2845 key_len = ptr - key;
2847 callback_get_buf(context, key, key_len, &dest, &dest_len);
2848 dest_end = dest + dest_len - 1;
2852 while (*ptr && *ptr !=
'\"') {
2856 if (dest && dest < dest_end)
2860 if (dest && dest < dest_end)
2868 for (; *ptr && !(
av_isspace(*ptr) || *ptr ==
','); ptr++)
2869 if (dest && dest < dest_end)
2889 struct tm time1 = { 0 }, time2 = { 0 };
2891 ret1 = strptime(datestr,
"%Y - %m - %d %T", &time1);
2892 ret2 = strptime(datestr,
"%Y - %m - %dT%T", &time2);
2899 "strptime() unavailable on this system, cannot convert "
2900 "the date string.\n");
2910 return ofmt->
query_codec(codec_id, std_compliance);
2943 uint64_t channel_layout,
int32_t sample_rate,
2955 if (channel_layout) {
2963 if (width || height) {
2970 bytestream_put_le32(&data, flags);
2972 bytestream_put_le32(&data, channels);
2974 bytestream_put_le64(&data, channel_layout);
2976 bytestream_put_le32(&data, sample_rate);
2977 if (width || height) {
2978 bytestream_put_le32(&data, width);
2979 bytestream_put_le32(&data, height);
2986 static const uint8_t avci100_1080p_extradata[] = {
2988 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
2989 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
2990 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
2991 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
2992 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
2993 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
2994 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
2995 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
2996 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
2998 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
3001 static const uint8_t avci100_1080i_extradata[] = {
3003 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
3004 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
3005 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
3006 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
3007 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
3008 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
3009 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
3010 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
3011 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
3012 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
3013 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x00,
3015 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
3018 static const uint8_t avci50_1080i_extradata[] = {
3020 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
3021 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
3022 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
3023 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
3024 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
3025 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
3026 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
3027 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
3028 0x81, 0x13, 0xf7, 0xff, 0x80, 0x01, 0x80, 0x02,
3029 0x71, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
3030 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
3032 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
3035 static const uint8_t avci100_720p_extradata[] = {
3037 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
3038 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
3039 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
3040 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
3041 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
3042 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
3043 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
3044 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
3045 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
3046 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
3048 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
3057 data = avci100_1080p_extradata;
3058 size =
sizeof(avci100_1080p_extradata);
3060 data = avci100_1080i_extradata;
3061 size =
sizeof(avci100_1080i_extradata);
3064 data = avci50_1080i_extradata;
3065 size =
sizeof(avci50_1080i_extradata);
3067 data = avci100_720p_extradata;
3068 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.
av_dlog(ac->avr,"%d samples - audio_convert: %s to %s (%s)\n", 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)
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
int ff_network_inited_globally
#define av_assert0(cond)
assert() equivalent, that is always enabled.
enum AVSampleFormat sample_fmt
audio sample format
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.
attribute_deprecated void(* destruct)(struct AVPacket *)
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.
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.
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.
int(* split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size)
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.
struct AVStream::@92 * info
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.