52 if (sscanf(s,
"%u:%u:%u.%u", &hh, &mm, &ss, &ms) == 4)
return (hh*3600LL + mm*60LL + ss) * 100LL + ms;
53 if (sscanf(s,
"%u:%u:%u" , &hh, &mm, &ss ) == 3)
return (hh*3600LL + mm*60LL + ss) * 100LL;
54 if (sscanf(s,
"%u:%u.%u", &mm, &ss, &ms) == 3)
return ( mm*60LL + ss) * 100LL + ms;
55 if (sscanf(s,
"%u:%u" , &mm, &ss ) == 2)
return ( mm*60LL + ss) * 100LL;
56 if (sscanf(s,
"%u.%u", &ss, &ms) == 2)
return ( ss) * 100LL + ms;
57 return strtoll(s,
NULL, 10) * 100ULL;
138 int64_t min_ts, int64_t ts, int64_t max_ts,
int flags)
142 min_ts, ts, max_ts, flags);
static int realtext_read_close(AVFormatContext *s)
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
int64_t pos
byte position in stream, -1 if unknown
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
static int realtext_read_packet(AVFormatContext *s, AVPacket *pkt)
void ff_subtitles_queue_clean(FFDemuxSubtitlesQueue *q)
Remove and destroy all the subtitles packets.
int av_strncasecmp(const char *a, const char *b, size_t n)
Locale-independent case-insensitive compare.
int av_bprint_finalize(AVBPrint *buf, char **ret_str)
Finalize a print buffer.
const char * ff_smil_get_attr_ptr(const char *s, const char *attr)
SMIL helper to point on the value of an attribute in the given tag.
int ff_subtitles_queue_read_packet(FFDemuxSubtitlesQueue *q, AVPacket *pkt)
Generic read_packet() callback for subtitles demuxers using this queue system.
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
static av_cold int read_close(AVFormatContext *ctx)
#define AV_BPRINT_SIZE_UNLIMITED
int ff_text_eof(FFTextReader *r)
Return non-zero if EOF was reached.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
void av_bprint_init(AVBPrint *buf, unsigned size_init, unsigned size_max)
enum AVMediaType codec_type
General type of the encoded data.
void ff_text_init_avio(void *s, FFTextReader *r, AVIOContext *pb)
Initialize the FFTextReader from the given AVIOContext.
int extradata_size
Size of the extradata content in bytes.
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.
int64_t ff_text_pos(FFTextReader *r)
Return the byte position of the next byte returned by ff_text_r8().
static int realtext_read_seek(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
#define ss(width, name, subs,...)
static int realtext_read_header(AVFormatContext *s)
void ff_text_read(FFTextReader *r, char *buf, size_t size)
Read the given number of bytes (in UTF-8).
static int read_header(FFV1Context *f)
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
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.
char * av_strdup(const char *s)
Duplicate a string.
int ff_smil_extract_next_text_chunk(FFTextReader *tr, AVBPrint *buf, char *c)
SMIL helper to load next chunk ("<...>" or untagged content) in buf.
AVIOContext * pb
I/O context.
AVInputFormat ff_realtext_demuxer
This structure contains the data a format has to probe a file.
static void merge(GetBitContext *gb, uint8_t *dst, uint8_t *src, int size)
Merge two consequent lists of equal size depending on bits read.
#define flags(name, subs,...)
static int realtext_probe(const AVProbeData *p)
void av_bprint_clear(AVBPrint *buf)
Reset the string to "" but keep internal allocated data.
void ff_text_init_buf(FFTextReader *r, void *buf, size_t size)
Similar to ff_text_init_avio(), but sets it up to read from a bounded buffer.
void * priv_data
Format private data.
static int64_t read_ts(const char *s)
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
static float sub(float src0, float src1)
AVCodecParameters * codecpar
Codec parameters associated with this stream.
AVPacket * ff_subtitles_queue_insert(FFDemuxSubtitlesQueue *q, const uint8_t *event, size_t len, int merge)
Insert a new subtitle event.
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions
This structure stores compressed data.
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...
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...