75 #define LICENSE_PREFIX "libavformat license: "
79 #define RELATIVE_TS_BASE (INT64_MAX - (1LL<<48))
97 timestamp < st->pts_wrap_reference)
110 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, subtitle_codec)
112 MAKE_ACCESSORS(AVFormatContext, format,
int, metadata_header_padding)
141 if ( (src-> codec_whitelist && !dst-> codec_whitelist)
175 #define SANE_CHUNK_SIZE (50000000)
181 if (remaining < size) {
184 s->
maxsize = newsize - !newsize;
186 remaining=
FFMAX(remaining, 0);
189 if (s->
maxsize>= 0 && remaining+1 < size) {
201 int64_t orig_pos = pkt->
pos;
202 int orig_size = pkt->
size;
206 int prev_size = pkt->
size;
224 if (ret != read_size) {
237 return pkt->
size > orig_size ? pkt->
size - orig_size :
ret;
267 static const struct {
291 "Probe with size=%d, packets=%d detected %s with score=%d\n",
294 for (i = 0; fmt_id_type[i].name; i++) {
295 if (!strcmp(fmt->
name, fmt_id_type[i].name)) {
343 "will be ignored with AVFMT_NOFILE format.\n");
368 (*plast_pktl)->next = pktl;
370 *packet_buffer = pktl;
385 if (copy.
size <= 0) {
387 "Attached picture on stream %d has invalid size, "
412 av_log(
NULL,
AV_LOG_ERROR,
"Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
427 if ((ret =
init_input(s, filename, &tmp)) < 0)
472 if (id3v2_extra_meta) {
539 "Failed to reallocate probe buffer for stream %d\n",
552 "nothing to probe for stream %d\n", st->
index);
579 int64_t ref = pkt->
dts;
580 int i, pts_wrap_behavior;
581 int64_t pts_wrap_reference;
599 if (!first_program) {
626 program = first_program;
670 if (!pktl || ret ==
AVERROR(EAGAIN))
685 "Dropped corrupted packet (stream = %d)\n",
763 }
else if (codec_framerate.
den * 1000LL > codec_framerate.
num) {
786 if (frame_size <= 0 || st->codec->sample_rate <= 0)
817 #if CONFIG_H264_DECODER
848 int64_t best_score = INT64_MAX;
849 for (i = 0; i<delay; i++) {
852 if (score < best_score) {
859 for (i = 0; i<delay; i++) {
861 int64_t
diff =
FFABS(pts_buffer[i] - dts)
920 pts_buffer[0] = pktl->
pkt.
pts;
921 for (i = 0; i<delay && pts_buffer[i] > pts_buffer[i + 1]; i++)
922 FFSWAP(int64_t, pts_buffer[i], pts_buffer[i + 1]);
953 av_log(s,
AV_LOG_DEBUG,
"first_dts %s not matching first dts %s (pts %s, duration %d) in the queue\n",
987 int64_t next_dts, int64_t next_pts)
989 int num, den, presentation_delayed, delay, i;
1004 "DTS %"PRIi64
" < %"PRIi64
" out of order\n",
1030 presentation_delayed = 0;
1036 presentation_delayed = 1;
1051 if (delay == 1 && pkt->
dts == pkt->
pts &&
1054 if ( strcmp(s->
iformat->
name,
"mov,mp4,m4a,3gp,3g2,mj2")
1089 presentation_delayed = 1;
1092 "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%d delay:%d onein_oneout:%d\n",
1097 if ((delay == 0 || (delay == 1 && pc)) &&
1099 if (presentation_delayed) {
1117 ((uint64_t)st->
cur_dts - (uint64_t)next_dts + 1) <= 2 &&
1118 next_dts != next_pts &&
1120 pkt->
pts = next_dts;
1157 av_dlog(
NULL,
"OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s\n",
1171 *pkt_buf = pktl->
next;
1175 *pkt_buf_end =
NULL;
1189 int ret = 0, got_output = 0;
1200 while (size > 0 || (pkt == &
flush_pkt && got_output)) {
1202 int64_t next_pts = pkt->
pts;
1203 int64_t next_dts = pkt->
dts;
1207 &out_pkt.
data, &out_pkt.
size, data, size,
1216 got_output = !!out_pkt.
size;
1261 #if FF_API_DESTRUCT_PACKET
1297 *pkt_buffer = pktl->
next;
1299 *pkt_buffer_end =
NULL;
1311 int ret = 0, i, got_packet = 0;
1340 cur_pkt.
pts < cur_pkt.
dts) {
1342 "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1350 "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
1360 "%s, packets or times may be invalid.\n",
1406 int discard_padding = 0;
1411 int64_t end_sample = sample +
duration;
1413 sample < st->last_discard_sample)
1420 AV_WL32(p + 4, discard_padding);
1440 memcpy(dst_data, src_sd->
data, src_sd->
size);
1459 "read_frame_internal stream=%d, pts=%s, dts=%s, "
1460 "size=%d, duration=%d, flags=%d\n",
1496 int64_t last_dts = next_pkt->
dts;
1506 last_dts = pktl->
pkt.
dts;
1534 if (pktl && ret !=
AVERROR(EAGAIN)) {
1581 int best_stream = 0;
1582 int best_score = -1;
1606 if (score > best_score) {
1676 int *nb_index_entries,
1677 unsigned int *index_entries_allocated_size,
1678 int64_t pos, int64_t timestamp,
1684 if ((
unsigned) *nb_index_entries + 1 >= UINT_MAX /
sizeof(
AVIndexEntry))
1697 index_entries_allocated_size,
1698 (*nb_index_entries + 1) *
1703 *index_entries = entries;
1709 index = (*nb_index_entries)++;
1710 ie = &entries[
index];
1711 av_assert0(index == 0 || ie[-1].timestamp < timestamp);
1713 ie = &entries[
index];
1717 memmove(entries + index + 1, entries + index,
1719 (*nb_index_entries)++;
1720 }
else if (ie->
pos == pos && distance < ie->min_distance)
1740 timestamp, size, distance, flags);
1744 int64_t wanted_timestamp,
int flags)
1753 if (b && entries[b - 1].timestamp < wanted_timestamp)
1759 if (timestamp >= wanted_timestamp)
1761 if (timestamp <= wanted_timestamp)
1767 while (m >= 0 && m < nb_entries &&
1771 if (m == nb_entries)
1779 wanted_timestamp, flags);
1783 int64_t (*read_timestamp)(
struct AVFormatContext *,
int , int64_t *, int64_t ))
1785 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
1786 if (stream_index >= 0)
1792 int64_t target_ts,
int flags)
1796 int64_t ts_min, ts_max, ts;
1801 if (stream_index < 0)
1810 st = s->
streams[stream_index];
1818 index =
FFMAX(index, 0);
1824 av_dlog(s,
"using cached pos_min=0x%"PRIx64
" dts_min=%s\n",
1839 av_dlog(s,
"using cached pos_max=0x%"PRIx64
" pos_limit=0x%"PRIx64
1840 " dts_max=%s\n", pos_max, pos_limit,
av_ts2str(ts_max));
1844 pos =
ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit,
1860 int64_t (*read_timestamp)(
struct AVFormatContext *,
int , int64_t *, int64_t ))
1862 int64_t step = 1024;
1863 int64_t limit, ts_max;
1865 int64_t pos_max = filesize - 1;
1868 pos_max =
FFMAX(0, (pos_max) - step);
1870 &pos_max, limit, read_timestamp);
1877 int64_t tmp_pos = pos_max + 1;
1879 &tmp_pos, INT64_MAX, read_timestamp);
1885 if (tmp_pos >= filesize)
1898 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
1899 int64_t ts_min, int64_t ts_max,
1900 int flags, int64_t *ts_ret,
1902 int64_t *, int64_t))
1913 ts_min =
ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1918 if (ts_min >= target_ts) {
1924 if ((ret =
ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
1926 pos_limit = pos_max;
1929 if (ts_max <= target_ts) {
1937 while (pos_min < pos_limit) {
1939 "pos_min=0x%"PRIx64
" pos_max=0x%"PRIx64
" dts_min=%s dts_max=%s\n",
1943 if (no_change == 0) {
1944 int64_t approximate_keyframe_distance = pos_max - pos_limit;
1946 pos =
av_rescale(target_ts - ts_min, pos_max - pos_min,
1948 pos_min - approximate_keyframe_distance;
1949 }
else if (no_change == 1) {
1951 pos = (pos_min + pos_limit) >> 1;
1959 else if (pos > pos_limit)
1969 av_dlog(s,
"%"PRId64
" %"PRId64
" %"PRId64
" / %s %s %s"
1970 " target:%s limit:%"PRId64
" start:%"PRId64
" noc:%d\n",
1971 pos_min, pos, pos_max,
1973 pos_limit, start_pos, no_change);
1978 if (target_ts <= ts) {
1979 pos_limit = start_pos - 1;
1983 if (target_ts >= ts) {
1993 ts_min =
ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1995 ts_max =
ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1996 av_dlog(s,
"pos=0x%"PRIx64
" %s<=%s<=%s\n",
2004 int64_t pos,
int flags)
2006 int64_t pos_min, pos_max;
2013 else if (pos > pos_max)
2024 int64_t timestamp,
int flags)
2031 st = s->
streams[stream_index];
2035 if (index < 0 && st->nb_index_entries &&
2036 timestamp < st->index_entries[0].timestamp)
2039 if (index < 0 || index == st->nb_index_entries - 1) {
2057 }
while (read_status ==
AVERROR(EAGAIN));
2058 if (read_status < 0)
2065 av_log(s,
AV_LOG_ERROR,
"seek_frame_generic failed as this stream seems to contain no keyframes after the target timestamp, %d non keyframes found\n", nonkey);
2088 int64_t timestamp,
int flags)
2100 if (stream_index < 0) {
2102 if (stream_index < 0)
2105 st = s->
streams[stream_index];
2132 int64_t timestamp,
int flags)
2137 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2143 flags & ~AVSEEK_FLAG_BACKWARD);
2155 int64_t ts, int64_t max_ts,
int flags)
2157 if (min_ts > ts || max_ts < ts)
2159 if (stream_index < -1 || stream_index >= (
int)s->
nb_streams)
2170 if (stream_index == -1 && s->
nb_streams == 1) {
2177 time_base.
num * (int64_t)AV_TIME_BASE,
2198 if (ret<0 && ts != min_ts && max_ts != ts) {
2199 ret =
av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2245 int64_t
start_time, start_time1, start_time_text, end_time, end_time1;
2246 int64_t
duration, duration1, filesize;
2251 start_time = INT64_MAX;
2252 start_time_text = INT64_MAX;
2253 end_time = INT64_MIN;
2254 duration = INT64_MIN;
2261 if (start_time1 < start_time_text)
2262 start_time_text = start_time1;
2264 start_time =
FFMIN(start_time, start_time1);
2267 end_time1 = start_time1 +
2270 end_time =
FFMAX(end_time, end_time1);
2282 duration =
FFMAX(duration, duration1);
2285 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text <
AV_TIME_BASE))
2286 start_time = start_time_text;
2287 else if (start_time > start_time_text)
2290 if (start_time != INT64_MAX) {
2292 if (end_time != INT64_MIN) {
2300 duration =
FFMAX(duration, end_time - start_time);
2308 double bitrate = (double) filesize * 8.0 * AV_TIME_BASE /
2310 if (bitrate >= 0 && bitrate <= INT_MAX)
2337 int i, show_warning = 0;
2382 "Estimating duration from bitrate, this may be inaccurate\n");
2385 #define DURATION_MAX_READ_SIZE 250000LL
2386 #define DURATION_MAX_RETRY 4
2393 int num, den, read_size, i,
ret;
2394 int found_duration = 0;
2408 "start time for stream %d is not set in estimate_timings_from_pts\n", i);
2421 is_end = found_duration;
2434 }
while (ret ==
AVERROR(EAGAIN));
2437 read_size += pkt->
size;
2494 av_log(ic,
AV_LOG_DEBUG,
"stream %d : no PTS found at end of file, duration not set\n", i);
2496 av_log(ic,
AV_LOG_DEBUG,
"stream %d : no TS found at start of file, duration not set\n", i);
2524 file_size =
FFMAX(0, file_size);
2550 av_dlog(ic,
"%d: start_time: %0.3f duration: %0.3f\n", i,
2555 "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
2566 #define FAIL(errmsg) do { \
2568 *errmsg_ptr = errmsg; \
2574 FAIL(
"unknown codec");
2578 FAIL(
"unspecified frame size");
2581 FAIL(
"unspecified sample format");
2583 FAIL(
"unspecified sample rate");
2585 FAIL(
"unspecified number of channels");
2587 FAIL(
"no decodable DTS frames");
2591 FAIL(
"unspecified size");
2593 FAIL(
"unspecified pixel format");
2596 FAIL(
"no frame in rv30/40 and no sar");
2600 FAIL(
"unspecified size");
2614 int got_picture = 1,
ret = 0;
2637 av_dict_set(options ? options : &thread_opt,
"threads",
"1", 0);
2656 while ((pkt.
size > 0 || (!pkt.
data && got_picture)) &&
2665 &got_picture, &pkt);
2672 &got_picture, &pkt);
2687 if (!pkt.
data && !got_picture)
2709 if (tag == tags[i].tag)
2731 if (sflags & (1 << (bps - 1))) {
2773 for (i = 0; tags && tags[i]; i++) {
2776 if (codec_tags->
id ==
id) {
2777 *tag = codec_tags->
tag;
2789 for (i = 0; tags && tags[i]; i++) {
2814 if (j != i && next_start > ch->
start && next_start < end)
2817 ch->
end = (end == INT64_MAX) ? ch->
start : end;
2824 return (i + 1) * 1001;
2828 return ((
const int[]) { 40, 48, 50, 60, 80, 120, 240})[i] * 1001 * 12;
2832 return ((
const int[]) { 24, 30, 60, 12, 15, 48 })[i] * 1000 * 12;
2898 && ts - (uint64_t)last < INT64_MAX) {
2912 double sdts = dts*framerate/(1001*12);
2913 for (j= 0; j<2; j++) {
2914 int64_t ticks =
llrint(sdts+j*0.5);
2915 double error= sdts - ticks + j*0.5;
2932 if (error0 > 0.04 && error1 > 0.04) {
2967 double best_error= 0.01;
2981 for (k= 0; k<2; k++) {
2986 if (error < best_error && best_error> 0.000000001) {
2995 if (num && (!ref_rate.
num || (
double)num/(12*1001) < 1.01 *
av_q2d(ref_rate)))
3026 int64_t max_stream_analyze_duration;
3029 if (!max_analyze_duration)
3033 flush_codecs = probesize > 0;
3037 max_stream_analyze_duration = max_analyze_duration;
3038 if (!max_analyze_duration) {
3039 max_stream_analyze_duration =
3046 av_log(ic,
AV_LOG_DEBUG,
"Before avformat_find_stream_info() pos: %"PRId64
" bytes read:%"PRId64
" seeks:%d\n",
3072 "%s, packets or times may be invalid.\n",
3080 av_dict_set(options ? &options[i] : &thread_opt,
"threads",
"1", 0);
3090 "Failed to open codec in av_find_stream_info\n");
3098 "Failed to open codec in av_find_stream_info\n");
3105 #if FF_API_R_FRAME_RATE
3115 int analyzed_all_streams;
3124 int fps_analyze_framecount = 20;
3133 fps_analyze_framecount *= 2;
3135 fps_analyze_framecount = 0;
3139 fps_analyze_framecount = 0;
3155 analyzed_all_streams = 0;
3157 analyzed_all_streams = 1;
3169 if (read_size >= probesize) {
3172 "Probe buffer size limit of %"PRId64
" bytes reached\n", probesize);
3179 "Stream #%d: not enough frames to estimate rate; "
3180 "consider increasing probesize\n", i);
3203 goto find_stream_info_err;
3206 goto find_stream_info_err;
3211 read_size += pkt->
size;
3218 "Non-increasing DTS in stream %d: packet %d with DTS "
3219 "%"PRId64
", packet %d with DTS %"PRId64
"\n",
3235 "DTS discontinuity in stream %d: packet %d with DTS "
3236 "%"PRId64
", packet %d with DTS %"PRId64
"\n",
3266 if (t >= (analyzed_all_streams ? max_analyze_duration : max_stream_analyze_duration)) {
3267 av_log(ic,
AV_LOG_VERBOSE,
"max_analyze_duration %"PRId64
" reached at %"PRId64
" microseconds\n",
3268 max_analyze_duration,
3279 #if FF_API_R_FRAME_RATE
3303 (options && i < orig_nb_streams) ? &options[i] :
NULL);
3325 (options && i < orig_nb_streams)
3326 ? &options[i] :
NULL);
3331 "decoding for stream %d failed\n", st->
index);
3359 double best_error = 0.01;
3376 if (error < best_error) {
3378 best_fps = std_fps.
num;
3383 best_fps, 12 * 1001, INT_MAX);
3441 "Could not find codec parameters for stream %d (%s): %s\n"
3442 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
3451 find_stream_info_err:
3461 av_log(ic,
AV_LOG_DEBUG,
"After avformat_find_stream_info() pos: %"PRId64
" bytes read:%"PRId64
" seeks:%d frames:%d\n",
3484 int wanted_stream_nb,
int related_stream,
3485 AVCodec **decoder_ret,
int flags)
3489 unsigned *program =
NULL;
3492 if (related_stream >= 0 && wanted_stream_nb < 0) {
3500 int real_stream_index = program ? program[i] : i;
3505 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
3507 if (wanted_stream_nb != real_stream_index &&
3526 if ((best_multiframe > multiframe) ||
3527 (best_multiframe == multiframe && best_bitrate > bitrate) ||
3528 (best_multiframe == multiframe && best_bitrate == bitrate && best_count >=
count))
3531 best_bitrate = bitrate;
3532 best_multiframe = multiframe;
3533 ret = real_stream_index;
3535 if (program && i == nb_streams - 1 && ret < 0) {
3543 *decoder_ret = (
AVCodec*)best_decoder;
3665 if (s->
nb_streams >= INT_MAX/
sizeof(*streams))
3715 #if FF_API_R_FRAME_RATE
3732 av_dlog(ac,
"new_program: id=0x%04x\n",
id);
3756 int64_t
start, int64_t
end,
const char *title)
3762 av_log(s,
AV_LOG_ERROR,
"Chapter end time %"PRId64
" before start %"PRId64
"\n", end, start);
3821 char *q, buf1[20],
c;
3822 int nd,
len, percentd_found;
3835 nd = nd * 10 + *p++ -
'0';
3848 snprintf(buf1,
sizeof(buf1),
"%0*d", nd, number);
3850 if ((q - buf + len) > buf_size - 1)
3852 memcpy(q, buf1, len);
3860 if ((q - buf) < buf_size - 1)
3864 if (!percentd_found)
3874 char *authorization,
int authorization_size,
3875 char *hostname,
int hostname_size,
3876 int *port_ptr,
char *path,
int path_size,
const char *url)
3878 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
3884 if (authorization_size > 0)
3885 authorization[0] = 0;
3886 if (hostname_size > 0)
3892 if ((p = strchr(url,
':'))) {
3906 ls = strchr(p,
'/');
3907 ls2 = strchr(p,
'?');
3911 ls =
FFMIN(ls, ls2);
3921 while ((at = strchr(p,
'@')) && at < ls) {
3923 FFMIN(authorization_size, at + 1 - at2));
3927 if (*p ==
'[' && (brk = strchr(p,
']')) && brk < ls) {
3930 FFMIN(hostname_size, brk - p));
3931 if (brk[1] ==
':' && port_ptr)
3932 *port_ptr = atoi(brk + 2);
3933 }
else if ((col = strchr(p,
':')) && col < ls) {
3935 FFMIN(col + 1 - p, hostname_size));
3937 *port_ptr = atoi(col + 1);
3940 FFMIN(ls + 1 - p, hostname_size));
3947 static const char hex_table_uc[16] = {
'0',
'1',
'2',
'3',
3950 'C',
'D',
'E',
'F' };
3951 static const char hex_table_lc[16] = {
'0',
'1',
'2',
'3',
3954 'c',
'd',
'e',
'f' };
3955 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
3957 for (i = 0; i <
s; i++) {
3958 buff[i * 2] = hex_table[src[i] >> 4];
3959 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
3976 if (c >=
'0' && c <=
'9')
3978 else if (c >=
'A' && c <=
'F')
3994 unsigned int pts_num,
unsigned int pts_den)
3998 if (new_tb.
num != pts_num)
4000 "st:%d removing common factor %d from timebase\n",
4004 "st:%d has too large timebase, reducing\n", s->
index);
4006 if (new_tb.
num <= 0 || new_tb.
den <= 0) {
4008 "Ignoring attempt to set invalid timebase %d/%d for st:%d\n",
4021 const char *ptr = str;
4026 char *dest =
NULL, *dest_end;
4027 int key_len, dest_len = 0;
4030 while (*ptr && (
av_isspace(*ptr) || *ptr ==
','))
4037 if (!(ptr = strchr(key,
'=')))
4040 key_len = ptr - key;
4042 callback_get_buf(context, key, key_len, &dest, &dest_len);
4043 dest_end = dest + dest_len - 1;
4047 while (*ptr && *ptr !=
'\"') {
4051 if (dest && dest < dest_end)
4055 if (dest && dest < dest_end)
4063 for (; *ptr && !(
av_isspace(*ptr) || *ptr ==
','); ptr++)
4064 if (dest && dest < dest_end)
4083 struct tm time1 = { 0 }, time2 = { 0 };
4098 return ofmt->
query_codec(codec_id, std_compliance);
4145 if (channel_layout) {
4153 if (width || height) {
4160 bytestream_put_le32(&data, flags);
4162 bytestream_put_le32(&data, channels);
4164 bytestream_put_le64(&data, channel_layout);
4166 bytestream_put_le32(&data, sample_rate);
4167 if (width || height) {
4168 bytestream_put_le32(&data, width);
4169 bytestream_put_le32(&data, height);
4181 av_reduce(&stream_sample_aspect_ratio.
num, &stream_sample_aspect_ratio.
den,
4182 stream_sample_aspect_ratio.
num, stream_sample_aspect_ratio.
den, INT_MAX);
4183 if (stream_sample_aspect_ratio.
num <= 0 || stream_sample_aspect_ratio.
den <= 0)
4184 stream_sample_aspect_ratio = undef;
4186 av_reduce(&frame_sample_aspect_ratio.
num, &frame_sample_aspect_ratio.
den,
4187 frame_sample_aspect_ratio.
num, frame_sample_aspect_ratio.
den, INT_MAX);
4188 if (frame_sample_aspect_ratio.
num <= 0 || frame_sample_aspect_ratio.
den <= 0)
4189 frame_sample_aspect_ratio = undef;
4191 if (stream_sample_aspect_ratio.
num)
4192 return stream_sample_aspect_ratio;
4194 return frame_sample_aspect_ratio;
4203 if (avg_fr.
num > 0 && avg_fr.
den > 0 && fr.
num > 0 && fr.
den > 0 &&
4210 if ( codec_fr.
num > 0 && codec_fr.
den > 0 &&
4221 if (*spec <= '9' && *spec >=
'0')
4222 return strtol(spec,
NULL, 0) == st->
index;
4223 else if (*spec ==
'v' || *spec ==
'a' || *spec ==
's' || *spec ==
'd' ||
4237 if (*spec++ ==
':') {
4241 return i == st->
index;
4245 }
else if (*spec ==
'p' && *(spec + 1) ==
':') {
4249 prog_id = strtol(spec, &endptr, 0);
4254 if (*endptr++ ==
':') {
4255 int stream_idx = strtol(endptr,
NULL, 0);
4256 return stream_idx >= 0 &&
4266 }
else if (*spec ==
'#' ||
4267 (*spec ==
'i' && *(spec + 1) ==
':')) {
4270 spec += 1 + (*spec ==
'i');
4271 stream_id = strtol(spec, &endptr, 0);
4273 return stream_id == st->
id;
4274 }
else if (*spec ==
'm' && *(spec + 1) ==
':') {
4280 val = strchr(spec,
':');
4288 if (!val || !strcmp(tag->
value, val + 1))
4306 static const uint8_t avci100_1080p_extradata[] = {
4308 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4309 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4310 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4311 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
4312 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
4313 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
4314 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
4315 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
4316 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
4318 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4321 static const uint8_t avci100_1080i_extradata[] = {
4323 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4324 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4325 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4326 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
4327 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
4328 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
4329 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
4330 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
4331 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
4332 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
4333 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x00,
4335 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4338 static const uint8_t avci50_1080p_extradata[] = {
4340 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4341 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4342 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4343 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
4344 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
4345 0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
4346 0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
4347 0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
4348 0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
4350 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4353 static const uint8_t avci50_1080i_extradata[] = {
4355 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4356 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4357 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4358 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
4359 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
4360 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
4361 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
4362 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
4363 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
4364 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
4365 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
4367 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4370 static const uint8_t avci100_720p_extradata[] = {
4372 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4373 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
4374 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
4375 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
4376 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
4377 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
4378 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
4379 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
4380 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
4381 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
4383 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
4386 static const uint8_t avci50_720p_extradata[] = {
4388 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
4389 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4390 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4391 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
4392 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
4393 0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
4394 0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
4395 0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
4396 0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
4398 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4407 data = avci100_1080p_extradata;
4408 size =
sizeof(avci100_1080p_extradata);
4410 data = avci100_1080i_extradata;
4411 size =
sizeof(avci100_1080i_extradata);
4415 data = avci50_1080p_extradata;
4416 size =
sizeof(avci50_1080p_extradata);
4418 data = avci50_1080i_extradata;
4419 size =
sizeof(avci50_1080i_extradata);
4422 data = avci100_720p_extradata;
4423 size =
sizeof(avci100_720p_extradata);
4425 data = avci50_720p_extradata;
4426 size =
sizeof(avci50_720p_extradata);
4468 if (sd->
type == type) {
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.
int av_opt_get_dict_val(void *obj, const char *name, int search_flags, AVDictionary **out_val)
int64_t first_dts
Timestamp corresponding to the last dts sync point.
int av_isdigit(int c)
Locale-independent conversion of ASCII isdigit.
const struct AVCodec * codec
const char const char void * val
#define AV_CODEC_PROP_INTRA_ONLY
Codec uses only intra compression.
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
int64_t avio_size(AVIOContext *s)
Get the filesize.
static int shift(int a, int b)
int av_demuxer_open(AVFormatContext *ic)
void av_free_packet(AVPacket *pkt)
Free a packet.
char * recommended_encoder_configuration
String containing paris of key and values describing recommended encoder configuration.
This structure describes decoded (raw) audio or video data.
AVIOInterruptCB interrupt_callback
Custom interrupt callbacks for the I/O layer.
ptrdiff_t const GLvoid * data
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.
enum AVDurationEstimationMethod duration_estimation_method
The duration field can be estimated through various ways, and this field can be used to know how the ...
#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]
int av_probe_input_buffer2(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.
AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
Guess the sample aspect ratio of a frame, based on both the stream and the frame aspect ratio...
void av_opt_set_defaults(void *s)
Set the values of all AVOption fields to their default values.
int64_t first_discard_sample
If not 0, the first audio sample that should be discarded from the stream.
int64_t pts_wrap_reference
Internal data to check for wrapping of the time stamp.
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
void av_codec_set_pkt_timebase(AVCodecContext *avctx, AVRational val)
int index
stream index in AVFormatContext
#define ID3v2_DEFAULT_MAGIC
Default magic bytes for ID3v2 header: "ID3".
int avio_flags
avio flags, used to force AVIO_FLAG_DIRECT.
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.
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown) That is the width of a pixel divided by the height of the pixel...
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 event_flags
Flags for the user to detect events happening on the file.
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
AVInputFormat * av_probe_input_format3(AVProbeData *pd, int is_opened, int *score_ret)
Guess the file format.
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)
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 avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, int *got_sub_ptr, AVPacket *avpkt)
Decode a subtitle message.
int av_opt_set_dict_val(void *obj, const char *name, const AVDictionary *val, int search_flags)
int64_t maxsize
max filesize, used to limit allocations This field is internal to libavformat and access from outside...
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.
int avpriv_h264_has_num_reorder_frames(AVCodecContext *avctx)
int64_t last_dts_for_order_check
Internal data to analyze DTS and detect faulty mpeg streams.
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
enum AVAudioServiceType audio_service_type
Type of service that the audio stream conveys.
AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
Guess the frame rate, based on both the container and codec information.
unsigned int nb_stream_indexes
int ff_network_inited_globally
#define av_assert0(cond)
assert() equivalent, that is always enabled.
static int64_t start_time
enum AVSampleFormat sample_fmt
audio sample format
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Opaque data information usually continuous.
int ff_network_init(void)
int av_isspace(int c)
Locale-independent conversion of ASCII isspace.
timestamp utils, mostly useful for debugging/logging purposes
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 *)
unsigned int avcodec_pix_fmt_to_codec_tag(enum AVPixelFormat pix_fmt)
Return a value representing the fourCC code associated to the pixel format pix_fmt, or 0 if no associated fourCC code can be found.
static av_cold int end(AVCodecContext *avctx)
int id
unique ID to identify the chapter
int id
Format-specific stream ID.
enum AVStreamParseType need_parsing
int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
Check if the stream st contained in s is matched by the stream specifier spec.
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.
char * av_small_strptime(const char *p, const char *fmt, struct tm *dt)
Parse the input string p according to the format string fmt and store its results in the structure dt...
AVFormatContext * avformat_alloc_context(void)
Allocate an AVFormatContext.
int inject_global_side_data
Internal data to inject global side data.
const char * avformat_configuration(void)
Return the libavformat build-time configuration.
int64_t bytes_read
Bytes read statistic This field is internal to libavformat and access from outside is not allowed...
static double av_q2d(AVRational a)
Convert rational to double.
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
int flags
Flags modifying the (de)muxer behaviour.
AVRational av_mul_q(AVRational b, AVRational c)
Multiply two rationals.
AVProgram * av_new_program(AVFormatContext *ac, int id)
int64_t probesize2
Maximum size of the data read from input for determining the input container format.
int avformat_network_init(void)
Do global initialization of network components.
char * av_strndup(const char *s, size_t len)
Duplicate a substring of the string s.
int fps_probe_size
The number of frames used for determining the framerate in avformat_find_stream_info().
#define AV_LOG_VERBOSE
Detailed information.
static void copy(LZOContext *c, int cnt)
Copies bytes from input to output buffer with checking.
const AVCodecDescriptor * av_codec_get_codec_descriptor(const AVCodecContext *avctx)
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
int duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
const OptionDef options[]
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.
int64_t rfps_duration_sum
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
unsigned int correct_ts_overflow
Correct single timestamp overflows.
struct AVOutputFormat * oformat
The output container format.
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
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...
AVProgram * av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
Find the programs which belong to a given stream.
int max_ts_probe
Maximum number of packets to read while waiting for the first timestamp.
int format_probesize
number of bytes to read maximally to identify format.
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.
int nb_decoded_frames
Number of internally decoded frames, used internally in libavformat, do not access its lifetime diffe...
int64_t pos
Byte position of currently parsed frame in stream.
int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture, int *got_picture_ptr, const AVPacket *avpkt)
Decode the video frame of size avpkt->size from avpkt->data into picture.
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
#define MAKE_ACCESSORS(str, name, type, field)
int64_t pts_wrap_reference
reference dts for wrap detection
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.
int64_t timestamp
Timestamp in AVStream.time_base units, preferably the time from which on correctly decoded frames are...
#define PARSER_FLAG_COMPLETE_FRAMES
int avio_close(AVIOContext *s)
Close the resource accessed by the AVIOContext s and free it.
int avcodec_is_open(AVCodecContext *s)
AVRational av_div_q(AVRational b, AVRational c)
Divide one rational by another.
int av_match_list(const char *name, const char *list, char separator)
Check if a name is in a list.
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.
int rc_max_rate
maximum bitrate
simple assert() macros that are a bit more flexible than ISO C assert().
#define PARSER_FLAG_USE_CODEC_TS
int64_t av_gcd(int64_t a, int64_t b)
Return the greatest common divisor of a and b.
enum AVPacketSideDataType type
int skip_samples
Number of samples to skip at the start of the frame decoded from the next packet. ...
static const uint8_t offset[127][2]
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.
AVCodec * audio_codec
Forced audio codec.
int flags
A combination of AV_PKT_FLAG values.
const AVCodecDescriptor * avcodec_descriptor_get(enum AVCodecID id)
int seek_count
seek statistic This field is internal to libavformat and access from outside is not allowed...
char * format_whitelist
',' separated list of allowed demuxers.
AVCodecContext * codec
Codec context associated with this stream.
static AVPacket flush_pkt
int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id, int std_compliance)
Test if the given container can store a codec.
int av_packet_merge_side_data(AVPacket *pkt)
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
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
int update_initial_durations_done
Internal data to prevent doing update_initial_durations() twice.
#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)
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 attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx, AVFrame *frame, int *got_frame_ptr, const AVPacket *avpkt)
Decode the audio frame of size avpkt->size from avpkt->data into frame.
int ticks_per_frame
For some codecs, the time base is closer to the field rate than the frame rate.
int probe_score
format probing score.
Usually treated as AVMEDIA_TYPE_DATA.
Opaque data information usually sparse.
int64_t skip_initial_bytes
Skip initial bytes when opening stream.
#define AVERROR_EXIT
Immediate exit was requested; the called function should not be restarted.
enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags, unsigned int fourcc)
preferred ID for MPEG-1/2 video decoding
const char * avcodec_get_name(enum AVCodecID id)
Get the name of a codec.
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.
uint8_t pts_reorder_error_count[MAX_REORDER_DELAY+1]
int64_t av_gettime(void)
Get the current time in microseconds.
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
int64_t end
chapter start/end time in time_base units
int avformat_queue_attached_pictures(AVFormatContext *s)
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.
#define AV_LOG_INFO
Standard information.
int64_t pts_reorder_error[MAX_REORDER_DELAY+1]
Internal data to generate dts from pts.
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)
Set all the options from a given dictionary on an object.
char * av_strdup(const char *s)
Duplicate the string s.
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.
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
int io_repositioned
IO repositioned flag.
int av_filename_number_test(const char *filename)
Check whether filename actually is a numbered sequence generator.
AVRational sample_aspect_ratio
Sample aspect ratio for the video frame, 0/1 if unknown/unspecified.
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
attribute_deprecated int max_analyze_duration
int pts_wrap_behavior
behavior on wrap detection
double(* duration_error)[2][MAX_STD_TIMEBASES]
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.
static av_const int av_toupper(int c)
Locale-independent conversion of ASCII characters to uppercase.
rational number numerator/denominator
AVRational display_aspect_ratio
display aspect ratio (0 if unknown)
Recommmends skipping the specified number of samples.
const AVClass * av_class
A class for logging and AVOptions.
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.
int found_decoder
0 -> decoder has not been searched for yet.
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. ...
int seek2any
Force seeking to any (also non key) frames.
int64_t codec_info_duration
static int64_t pts
Global timestamp for the audio frames.
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
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.
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
int pts_wrap_behavior
Options for behavior, when a wrap is detected.
void * av_realloc(void *ptr, size_t size)
Allocate or reallocate a block of memory.
#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 presentation order, in stream time base...
int64_t av_add_stable(AVRational ts_tb, int64_t ts, AVRational inc_tb, int64_t inc)
Add a value to a timestamp.
AVCodec * video_codec
Forced video codec.
int disposition
AV_DISPOSITION_* bit field.
AVBufferRef * av_buffer_ref(AVBufferRef *buf)
Create a new reference to an AVBuffer.
void av_codec_set_codec_descriptor(AVCodecContext *avctx, const AVCodecDescriptor *desc)
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
void * av_realloc_array(void *ptr, size_t nmemb, size_t size)
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.
void ff_id3v2_read(AVFormatContext *s, const char *magic, ID3v2ExtraMeta **extra_meta, unsigned int max_search_size)
Read an ID3v2 tag, including supported extra metadata and chapters.
#define AV_PKT_FLAG_CORRUPT
The packet content is corrupted.
struct AVInputFormat * iformat
The input container format.
int64_t max_analyze_duration2
Maximum duration (in AV_TIME_BASE units) of the data read from input in avformat_find_stream_info().
void avformat_close_input(AVFormatContext **ps)
Close an opened input AVFormatContext.
#define FFMPEG_CONFIGURATION
int64_t codec_info_duration_fields
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
Flag to pass INT64_MIN/MAX through instead of rescaling, this avoids special cases for AV_NOPTS_VALUE...
unsigned int index_entries_allocated_size
#define AVERROR_DECODER_NOT_FOUND
Decoder not found.
int skip_to_keyframe
Indicates that everything up to the next keyframe should be discarded.
static av_always_inline int diff(const uint32_t a, const uint32_t b)
AVCodec * subtitle_codec
Forced subtitle codec.
#define FF_ENABLE_DEPRECATION_WARNINGS
#define av_ts2str(ts)
Convenience macro, the return value should be used only directly in function arguments but never stan...
int channels
number of audio channels
char * codec_whitelist
',' separated list of allowed decoders.
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()
const struct PixelFormatTag * avpriv_get_raw_pix_fmt_tags(void)
#define AVERROR_STREAM_NOT_FOUND
Stream not found.
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.
int avformat_flush(AVFormatContext *s)
Discard all internally buffered data.
enum AVFieldOrder field_order
Field order.
uint8_t * av_packet_get_side_data(AVPacket *pkt, enum AVPacketSideDataType type, int *size)
Get side information from packet.
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.
AVRational r_frame_rate
Real base framerate of the stream.
int request_probe
stream probing state -1 -> probing finished 0 -> no probing requested rest -> perform probing with re...
int use_wallclock_as_timestamps
forces the use of wallclock timestamps as pts/dts of packets This has undefined results in the presen...
This structure stores compressed data.
int avio_closep(AVIOContext **s)
Close the resource accessed by the AVIOContext *s, free it and set the pointer pointing to it to NULL...
int key_frame
Set by parser to 1 for key frames and 0 for non-key frames.
int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
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.
struct AVStream::@136 * info
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.