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43 while (*str && *str < 128) str++;
124 char digits[] = {
data[0],
data[1], 0};
159 if (t->
key[0] !=
'T' || strlen(t->
key) != 4)
173 char year[5] = {0}, day_month[5] = {0};
246 }
else if (
ret < 0) {
266 if (
s->nb_chapters == 0)
275 for (
int i = 0;
i <
s->nb_chapters;
i++) {
344 for (
i = 0;
i <
s->nb_chapters;
i++) {
360 const char *mimetype =
NULL, *
desc =
"";
368 mimetype = mime->
str;
375 "write an attached picture.\n", st->
index);
426 if (padding_bytes < 0)
435 padding_bytes =
av_clip(padding_bytes, 10, 268435455 - id3->
len);
437 id3->
len += padding_bytes;
static av_const int av_isxdigit(int c)
Locale-independent conversion of ASCII isxdigit.
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 minimum maximum flags name is the option name
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
static int write_metadata(AVIOContext *pb, AVDictionary **metadata, ID3v2EncContext *id3, int enc)
int len
size of the tag written so far
const char ff_id3v2_4_tags[][4]
ID3v2.4-only text information frames.
int av_strcasecmp(const char *a, const char *b)
Locale-independent case-insensitive compare.
int version
ID3v2 minor version, either 3 or 4.
static const uint16_t table[]
void ff_id3v2_finish(ID3v2EncContext *id3, AVIOContext *pb, int padding_bytes)
Finalize an opened ID3v2 tag.
int avio_get_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
Return the written size and a pointer to the buffer.
int ff_id3v2_write_metadata(AVFormatContext *s, ID3v2EncContext *id3)
Convert and write all global metadata from s into an ID3v2 tag.
void avio_wl16(AVIOContext *s, unsigned int val)
static void id3v2_encode_string(AVIOContext *pb, const uint8_t *str, enum ID3v2Encoding enc)
static int id3v2_put_ttag(ID3v2EncContext *id3, AVIOContext *avioc, const char *str1, const char *str2, uint32_t tag, enum ID3v2Encoding enc)
Write a text frame with one (normal frames) or two (TXXX frames) strings according to encoding (only ...
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
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 type
#define ID3v2_PRIV_METADATA_PREFIX
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
#define FF_ARRAY_ELEMS(a)
int ff_id3v2_write_simple(struct AVFormatContext *s, int id3v2_version, const char *magic)
Write an ID3v2 tag containing all global metadata from s.
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
int avio_open_dyn_buf(AVIOContext **s)
Open a write only memory stream.
int64_t end
chapter start/end time in time_base units
static void id3v2_put_size(AVIOContext *pb, int size)
static void id3v2_3_metadata_split_date(AVDictionary **pm)
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
static int id3v2_put_priv(ID3v2EncContext *id3, AVIOContext *avioc, const char *key, const char *data)
Write a priv frame with owner and data.
void ff_id3v2_start(ID3v2EncContext *id3, AVIOContext *pb, int id3v2_version, const char *magic)
Initialize an ID3v2 tag.
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Rational number (pair of numerator and denominator).
int64_t size_pos
offset of the tag total size
void avio_w8(AVIOContext *s, int b)
void ffio_fill(AVIOContext *s, int b, int64_t count)
const char *const ff_id3v2_picture_types[21]
#define ID3v2_HEADER_SIZE
const char ff_id3v2_3_tags[][4]
ID3v2.3-only text information frames.
const CodecMime ff_id3v2_mime_tags[]
static int id3v2_check_write_tag(ID3v2EncContext *id3, AVIOContext *pb, const AVDictionaryEntry *t, const char table[][4], enum ID3v2Encoding enc)
const char ff_id3v2_tags[][4]
A list of text information frames allowed in both ID3 v2.3 and v2.4 http://www.id3....
@ ID3v2_ENCODING_UTF16BOM
int ff_standardize_creation_time(AVFormatContext *s)
Standardize creation_time metadata in AVFormatContext to an ISO-8601 timestamp string.
#define MKBETAG(a, b, c, d)
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_RB32
const AVMetadataConv ff_id3v2_34_metadata_conv[]
static int write_ctoc(AVFormatContext *s, ID3v2EncContext *id3, int enc)
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
void avio_wb32(AVIOContext *s, unsigned int val)
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values.
int av_strstart(const char *str, const char *pfx, const char **ptr)
Return non-zero if pfx is a prefix of str.
int ff_id3v2_write_apic(AVFormatContext *s, ID3v2EncContext *id3, AVPacket *pkt)
Write an attached picture from pkt into an ID3v2 tag.
#define i(width, name, range_min, range_max)
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
void ffio_free_dyn_buf(AVIOContext **s)
Free a dynamic buffer.
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
int index
stream index in AVFormatContext
const AVMetadataConv ff_id3v2_4_metadata_conv[]
static int string_is_ascii(const uint8_t *str)
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.
int avio_put_str16le(AVIOContext *s, const char *str)
Convert an UTF-8 string to UTF-16LE and write it.
void avio_wb16(AVIOContext *s, unsigned int val)
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.
AVRational time_base
time base in which the start/end timestamps are specified
int avio_put_str(AVIOContext *s, const char *str)
Write a NULL-terminated string.
static int write_chapter(AVFormatContext *s, ID3v2EncContext *id3, int id, int enc)
const AVDictionaryEntry * av_dict_iterate(const AVDictionary *m, const AVDictionaryEntry *prev)
Iterate over a dictionary.