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42 const unsigned char *ptr = p->
buf;
46 if (sscanf(ptr,
"%*u:%*u:%*u.%*u,%*u:%*u:%*u.%*u%c", &
c) == 1)
48 if (!strncmp(ptr,
"[INFORMATION]", 13))
65 int hh1, mm1, ss1, ms1;
66 int hh2, mm2, ss2, ms2;
67 int multiplier1, multiplier2;
68 int ms1p1, ms1p2, ms2p1, ms2p2;
70 if (sscanf(
s,
"%u:%u:%u.%n%u%n,%u:%u:%u.%n%u%n",
71 &hh1, &mm1, &ss1, &ms1p1, &ms1, &ms1p2, &hh2, &mm2, &ss2, &ms2p1, &ms2, &ms2p2) == 8) {
74 if (multiplier1 <= 0 ||multiplier2 <= 0)
77 end = (hh2*3600LL + mm2*60LL + ss2) * 1000LL + ms2 * multiplier2;
78 *start = (hh1*3600LL + mm1*60LL + ss1) * 1000LL + ms1 * multiplier1;
90 int res = 0, new_event = 1;
118 if (
line[0] ==
'[' && strncmp(
line,
"[br]", 4)) {
121 if (strstr(
line,
"[COLF]") || strstr(
line,
"[SIZE]") ||
122 strstr(
line,
"[FONT]") || strstr(
line,
"[STYLE]"))
127 if (!strncmp(
line,
"[END INFORMATION]", 17) || !strncmp(
line,
"[SUBTITLE]", 10)) {
132 }
else if (strncmp(
line,
"[INFORMATION]", 13)) {
143 while (
line[
i] ==
' ')
174 sub->
pts = pts_start;
int ff_subtitles_read_close(AVFormatContext *s)
#define AV_BPRINT_SIZE_UNLIMITED
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
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
enum AVMediaType codec_type
General type of the encoded data.
void av_bprint_init(AVBPrint *buf, unsigned size_init, unsigned size_max)
AVStream * avformat_new_stream(AVFormatContext *s, const struct AVCodec *c)
Add a new stream to a media file.
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
static av_cold int read_close(AVFormatContext *ctx)
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
int ff_subtitles_read_packet(AVFormatContext *s, AVPacket *pkt)
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
AVCodecParameters * codecpar
Codec parameters associated with this stream.
static int read_header(FFV1Context *f)
This structure contains the data a format has to probe a file.
AVPacket * ff_subtitles_queue_insert(FFDemuxSubtitlesQueue *q, const uint8_t *event, size_t len, int merge)
Insert a new subtitle event.
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
unsigned int avio_rb24(AVIOContext *s)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
int av_bprint_finalize(AVBPrint *buf, char **ret_str)
Finalize a print buffer.
#define AV_NOPTS_VALUE
Undefined timestamp value.
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.
static const uint8_t header[24]
int ffio_ensure_seekback(AVIOContext *s, int64_t buf_size)
Ensures that the requested seekback buffer size will be available.
#define i(width, name, range_min, range_max)
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default value
int ff_subtitles_read_seek(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
int ff_get_line(AVIOContext *s, char *buf, int maxlen)
Read a whole line of text from AVIOContext.
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
void av_bprintf(AVBPrint *buf, const char *fmt,...)
static int read_probe(const AVProbeData *p)
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
This structure stores compressed data.
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
int64_t pos
byte position in stream, -1 if unknown
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_RB24
static av_const int av_tolower(int c)
Locale-independent conversion of ASCII characters to lowercase.
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.