30 #define TSBASE 10000000
38 const char *ptr = p->
buf;
41 while (ptr < ptr_end) {
44 if (!memcmp(ptr,
"FORMAT=TIME", 11))
46 if (!memcmp(ptr,
"FORMAT=", 7))
60 for (vi = 0; vi < 2; vi++) {
61 long long intval, fracval;
62 int n =
av_sscanf(
line,
"%lld%n.%lld%n", &intval, &p1, &fracval, &p2);
63 if (n <= 0 || intval < INT64_MIN / TSBASE || intval > INT64_MAX /
TSBASE)
71 for (;p2 - p1 < 7 + 1; p1--)
73 for (;p2 - p1 > 7 + 1; p1++)
96 int64_t current_pts = 0;
98 int common_factor = 0;
112 if (sscanf(
line,
"FORMAT=%d", &fps) == 1 && fps > 3 && fps < 100) {
126 if ( current_pts < 0 && start < INT64_MIN - current_pts
127 || current_pts > 0 && start > INT64_MAX - current_pts) {
131 sub->pts = current_pts + start;
132 if (duration < 0 || sub->
pts > INT64_MAX -
duration) {
139 common_factor =
av_gcd(
sub->pts, common_factor);
147 if (common_factor > 1) {
148 common_factor =
av_gcd(pts_info.
num, common_factor);
153 pts_info.
num /= common_factor;
182 int64_t min_ts, int64_t ts, int64_t max_ts,
int flags)
186 min_ts, ts, max_ts,
flags);
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
int ff_get_line(AVIOContext *s, char *buf, int maxlen)
Read a whole line of text from AVIOContext.
void av_bprint_init(AVBPrint *buf, unsigned size_init, unsigned size_max)
int av_bprint_finalize(AVBPrint *buf, char **ret_str)
Finalize a print buffer.
#define AV_BPRINT_SIZE_UNLIMITED
#define flags(name, subs,...)
static float sub(float src0, float src1)
static int read_header(FFV1Context *f)
@ AV_CODEC_ID_TEXT
raw UTF-8 text
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
int64_t av_gcd(int64_t a, int64_t b)
Compute the greatest common divisor of two integer operands.
int av_sscanf(const char *string, const char *format,...)
See libc sscanf manual for more information.
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
static av_cold int read_close(AVFormatContext *ctx)
static int parse_line(const char *line, int64_t *value, int64_t *value2)
static int mpsub_read_header(AVFormatContext *s)
AVInputFormat ff_mpsub_demuxer
static int mpsub_read_packet(AVFormatContext *s, AVPacket *pkt)
static int mpsub_read_close(AVFormatContext *s)
static int mpsub_probe(const AVProbeData *p)
static int mpsub_read_seek(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
enum AVMediaType codec_type
General type of the encoded data.
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
This structure stores compressed data.
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
This structure contains the data a format has to probe a file.
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.
Rational number (pair of numerator and denominator).
AVCodecParameters * codecpar
Codec parameters associated with this stream.
int nb_subs
number of subtitles packets
AVPacket ** subs
array of subtitles packets
void ff_subtitles_read_chunk(AVIOContext *pb, AVBPrint *buf)
Same as ff_subtitles_read_text_chunk(), but read from an AVIOContext.
int ff_subtitles_queue_seek(FFDemuxSubtitlesQueue *q, AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
Update current_sub_idx to emulate a seek.
int ff_subtitles_queue_read_packet(FFDemuxSubtitlesQueue *q, AVPacket *pkt)
Generic read_packet() callback for subtitles demuxers using this queue system.
void ff_subtitles_queue_finalize(void *log_ctx, FFDemuxSubtitlesQueue *q)
Set missing durations, sort subtitles by PTS (and then byte position), and drop duplicated events.
void ff_subtitles_queue_clean(FFDemuxSubtitlesQueue *q)
Remove and destroy all the subtitles packets.
AVPacket * ff_subtitles_queue_insert(FFDemuxSubtitlesQueue *q, const uint8_t *event, size_t len, int merge)
Insert a new subtitle event.
static av_always_inline int ff_subtitles_next_line(const char *ptr)
Get the number of characters to increment to jump to the next line, or to the end of the string.