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35 #if FF_API_INIT_PACKET
42 #if FF_API_CONVERGENCE_DURATION
44 pkt->convergence_duration = 0;
57 memset(
pkt, 0,
sizeof(*
pkt));
126 if ((
unsigned)grow_by >
139 if (data_offset > INT_MAX - new_size)
143 if (new_size + data_offset >
pkt->
buf->
size ||
182 #if FF_API_AVPACKET_OLD_API
184 #define ALLOC_MALLOC(data, size) data = av_malloc(size)
185 #define ALLOC_BUF(data, size) \
187 av_buffer_realloc(&pkt->buf, size); \
188 data = pkt->buf ? pkt->buf->data : NULL; \
191 #define DUP_DATA(dst, src, size, padding, ALLOC) \
195 if ((unsigned)(size) > \
196 (unsigned)(size) + AV_INPUT_BUFFER_PADDING_SIZE) \
198 ALLOC(data, size + AV_INPUT_BUFFER_PADDING_SIZE); \
204 memcpy(data, src, size); \
206 memset((uint8_t *)data + size, 0, \
207 AV_INPUT_BUFFER_PADDING_SIZE); \
226 if (
src->side_data_elems && dup) {
230 if (
src->side_data_elems && !dup) {
242 if (
src->side_data_elems) {
248 src->side_data_elems *
sizeof(*
src->side_data));
250 for (
i = 0;
i <
src->side_data_elems;
i++) {
293 #if FF_API_AVPACKET_OLD_API
315 for (
i = 0;
i < elems;
i++) {
349 #if FF_API_BUFFER_SIZE_T
423 #if FF_API_MERGE_SD_API
425 #define FF_MERGE_MARKER 0x8c4d9d108e25e9feULL
510 #if FF_API_BUFFER_SIZE_T
524 size_t total_length = 0;
527 for (
int i = 0;
i < 2;
i++) {
529 const size_t len = strlen(
str) + 1;
533 #if FF_API_BUFFER_SIZE_T
534 else if (
len > INT_MAX - total_length)
536 else if (
len > SIZE_MAX - total_length)
547 *
size = total_length;
553 #if FF_API_BUFFER_SIZE_T
608 #if FF_API_CONVERGENCE_DURATION
610 dst->convergence_duration =
src->convergence_duration;
618 for (
i = 0;
i <
src->side_data_elems;
i++) {
628 memcpy(dst_data, src_data,
size);
745 #if FF_API_CONVERGENCE_DURATION
747 if (
pkt->convergence_duration > 0)
781 (*plast_pktl)->next = pktl;
783 *packet_buffer = pktl;
799 *pkt_buffer = pktl->
next;
801 *pkt_buffer_end =
NULL;
828 side_data_size = 4+4+8*error_count;
833 if (!side_data || side_data_size < 4+4+8*error_count)
837 side_data[4] = pict_type;
838 side_data[5] = error_count;
839 for (
i = 0;
i<error_count;
i++)
static void error(const char *err)
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
#define FF_ENABLE_DEPRECATION_WARNINGS
AVBufferRef * av_buffer_alloc(buffer_size_t size)
Allocate an AVBuffer of the given size using av_malloc().
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
@ AV_PKT_DATA_NB
The number of side data types.
uint8_t * av_packet_get_side_data(const AVPacket *pkt, enum AVPacketSideDataType type, buffer_size_t *size)
int av_buffer_realloc(AVBufferRef **pbuf, buffer_size_t size)
Reallocate a given buffer.
@ AV_PKT_DATA_MPEGTS_STREAM_ID
MPEGTS stream ID as uint8_t, this is required to pass the stream ID information from the demuxer to t...
@ AV_PKT_DATA_PARAM_CHANGE
An AV_PKT_DATA_PARAM_CHANGE side data packet is laid out as follows:
int ff_side_data_set_encoder_stats(AVPacket *pkt, int quality, int64_t *error, int error_count, int pict_type)
uint8_t * data
The data buffer.
int av_grow_packet(AVPacket *pkt, int grow_by)
Increase packet size, correctly zeroing padding.
@ AV_PKT_DATA_ENCRYPTION_INFO
This side data contains encryption info for how to decrypt the packet.
int64_t wallclock
A UTC timestamp, in microseconds, since Unix epoch (e.g, av_gettime()).
@ AV_PKT_DATA_PALETTE
An AV_PKT_DATA_PALETTE side data packet contains exactly AVPALETTE_SIZE bytes worth of palette.
@ AV_PKT_DATA_ENCRYPTION_INIT_INFO
This side data is encryption initialization data.
#define AV_DICT_IGNORE_SUFFIX
Return first entry in a dictionary whose first part corresponds to the search key,...
@ AV_PKT_DATA_AFD
Active Format Description data consisting of a single byte as specified in ETSI TS 101 154 using AVAc...
AVBufferRef * av_buffer_create(uint8_t *data, buffer_size_t size, void(*free)(void *opaque, uint8_t *data), void *opaque, int flags)
Create an AVBuffer from an existing array.
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
@ AV_PKT_DATA_SPHERICAL
This side data should be associated with a video stream and corresponds to the AVSphericalMapping str...
FF_ENABLE_DEPRECATION_WARNINGS void av_packet_free_side_data(AVPacket *pkt)
Convenience function to free all the side data stored.
static int packet_alloc(AVBufferRef **buf, int size)
void av_packet_free(AVPacket **pkt)
Free the packet, if the packet is reference counted, it will be unreferenced first.
trying all byte sequences megabyte in length and selecting the best looking sequence will yield cases to try But a word about quality
int size
Size of data in bytes.
FF_ENABLE_DEPRECATION_WARNINGS int av_packet_add_side_data(AVPacket *pkt, enum AVPacketSideDataType type, uint8_t *data, size_t size)
Wrap an existing array as a packet side data.
void av_shrink_packet(AVPacket *pkt, int size)
Reduce packet size, correctly zeroing padding.
int ff_side_data_set_prft(AVPacket *pkt, int64_t timestamp)
static double val(void *priv, double ch)
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
@ AV_PKT_DATA_DISPLAYMATRIX
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
@ AV_PKT_DATA_STRINGS_METADATA
A list of zero terminated key/value strings.
@ AV_PKT_DATA_REPLAYGAIN
This side data should be associated with an audio stream and contains ReplayGain information in form ...
const char * av_packet_side_data_name(enum AVPacketSideDataType type)
void av_init_packet(AVPacket *pkt)
@ AV_PKT_DATA_WEBVTT_SETTINGS
The optional settings (rendering instructions) that immediately follow the timestamp specifier of a W...
@ AV_PKT_DATA_AUDIO_SERVICE_TYPE
This side data should be associated with an audio stream and corresponds to enum AVAudioServiceType.
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
@ AV_PKT_DATA_STEREO3D
This side data should be associated with a video stream and contains Stereoscopic 3D information in f...
@ AV_PKT_DATA_MASTERING_DISPLAY_METADATA
Mastering display metadata (based on SMPTE-2086:2014).
static int copy_packet_data(AVPacket *pkt, const AVPacket *src, int dup)
int av_packet_split_side_data(AVPacket *pkt)
void av_buffer_default_free(void *opaque, uint8_t *data)
Default free callback, which calls av_free() on the buffer data.
#define av_assert0(cond)
assert() equivalent, that is always enabled.
@ AV_PKT_DATA_ICC_PROFILE
ICC profile data consisting of an opaque octet buffer following the format described by ISO 15076-1.
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
int av_copy_packet_side_data(AVPacket *pkt, const AVPacket *src)
@ AV_PKT_DATA_PRFT
Producer Reference Time data corresponding to the AVProducerReferenceTime struct, usually exported by...
#define ALLOC_MALLOC(data, size)
AVBufferRef * buf
A reference to the reference-counted buffer where the packet data is stored.
void av_buffer_unref(AVBufferRef **buf)
Free a given reference and automatically free the buffer if there are no more references to it.
Rational number (pair of numerator and denominator).
enum AVPacketSideDataType type
int av_dup_packet(AVPacket *pkt)
@ AV_PKT_DATA_SUBTITLE_POSITION
Subtitle event position.
This structure supplies correlation between a packet timestamp and a wall clock production time.
int av_packet_ref(AVPacket *dst, const AVPacket *src)
Setup a new reference to the data described by a given packet.
void av_packet_move_ref(AVPacket *dst, AVPacket *src)
Move every field in src to dst and reset src.
int av_packet_from_data(AVPacket *pkt, uint8_t *data, int size)
Initialize a reference-counted packet from av_malloc()ed data.
static void copy(const float *p1, float *p2, const int length)
static void get_packet_defaults(AVPacket *pkt)
#define AV_NOPTS_VALUE
Undefined timestamp value.
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
@ AV_PKT_DATA_H263_MB_INFO
An AV_PKT_DATA_H263_MB_INFO side data packet contains a number of structures with info about macroblo...
int av_packet_unpack_dictionary(const uint8_t *data, size_t size, AVDictionary **dict)
Unpack a dictionary from side_data.
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed.
uint8_t * av_packet_pack_dictionary(AVDictionary *dict, size_t *size)
Pack a dictionary for use in side_data.
@ AV_PKT_DATA_CONTENT_LIGHT_LEVEL
Content light level (based on CTA-861.3).
int av_packet_make_refcounted(AVPacket *pkt)
Ensure the data described by a given packet is reference counted.
int flags
A combination of AV_PKT_FLAG values.
AVPacket * av_packet_alloc(void)
Allocate an AVPacket and set its fields to default values.
void av_packet_rescale_ts(AVPacket *pkt, AVRational src_tb, AVRational dst_tb)
Convert valid timing fields (timestamps / durations) in a packet from one timebase to another.
@ AV_PKT_DATA_METADATA_UPDATE
A list of zero terminated key/value strings.
void * av_realloc(void *ptr, size_t size)
Allocate, reallocate, or free a block of memory.
@ AV_PKT_DATA_JP_DUALMONO
An AV_PKT_DATA_JP_DUALMONO side data packet indicates that the packet may contain "dual mono" audio s...
static av_always_inline void bytestream_put_buffer(uint8_t **b, const uint8_t *src, unsigned int size)
int av_packet_copy_props(AVPacket *dst, const AVPacket *src)
Copy only "properties" fields from src to dst.
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
#define DUP_DATA(dst, src, size, padding, ALLOC)
#define av_malloc_array(a, b)
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
@ AV_PKT_DATA_A53_CC
ATSC A53 Part 4 Closed Captions.
int av_packet_merge_side_data(AVPacket *pkt)
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
@ AV_PKT_DATA_CPB_PROPERTIES
This side data corresponds to the AVCPBProperties struct.
@ AV_PKT_DATA_SKIP_SAMPLES
Recommmends skipping the specified number of samples.
int av_copy_packet(AVPacket *dst, const AVPacket *src)
uint8_t * av_packet_new_side_data(AVPacket *pkt, enum AVPacketSideDataType type, buffer_size_t size)
int av_buffer_is_writable(const AVBufferRef *buf)
FF_DISABLE_DEPRECATION_WARNINGS void av_free_packet(AVPacket *pkt)
#define ALLOC_BUF(data, size)
@ AV_PKT_DATA_DOVI_CONF
DOVI configuration ref: dolby-vision-bitstreams-within-the-iso-base-media-file-format-v2....
int av_packet_shrink_side_data(AVPacket *pkt, enum AVPacketSideDataType type, buffer_size_t size)
int avpriv_packet_list_get(PacketList **pkt_buffer, PacketList **pkt_buffer_end, AVPacket *pkt)
Remove the oldest AVPacket in the list and return it.
AVPacketSideData * side_data
Additional packet data that can be provided by the container.
@ AV_PKT_DATA_S12M_TIMECODE
Timecode which conforms to SMPTE ST 12-1:2014.
#define AV_INPUT_BUFFER_PADDING_SIZE
@ AV_PKT_DATA_NEW_EXTRADATA
The AV_PKT_DATA_NEW_EXTRADATA is used to notify the codec or the format that the extradata buffer was...
int av_packet_make_writable(AVPacket *pkt)
Create a writable reference for the data described by a given packet, avoiding data copy if possible.
static int ref[MAX_W *MAX_W]
AVBufferRef * av_buffer_ref(AVBufferRef *buf)
Create a new reference to an AVBuffer.
#define FF_DISABLE_DEPRECATION_WARNINGS
A reference to a data buffer.
@ AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL
Data found in BlockAdditional element of matroska container.
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
@ AV_PKT_DATA_FALLBACK_TRACK
This side data contains an integer value representing the stream index of a "fallback" track.
@ AV_PKT_DATA_QUALITY_STATS
This side data contains quality related information from the encoder.
#define flags(name, subs,...)
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
@ AV_PKT_DATA_WEBVTT_IDENTIFIER
The optional first identifier line of a WebVTT cue.
int avpriv_packet_list_put(PacketList **packet_buffer, PacketList **plast_pktl, AVPacket *pkt, int(*copy)(AVPacket *dst, const AVPacket *src), int flags)
Append an AVPacket to the list.
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_RB64
void avpriv_packet_list_free(PacketList **pkt_buf, PacketList **pkt_buf_end)
Wipe the list and unref all the packets in it.
AVPacket * av_packet_clone(const AVPacket *src)
Create a new packet that references the same data as src.