libavcodec/avpacket.c File Reference

#include "avcodec.h"
#include "libavutil/avassert.h"
#include "bytestream.h"

Go to the source code of this file.


#define DUP_DATA(dst, src, size, padding)
#define FF_MERGE_MARKER   0x8c4d9d108e25e9feULL


void av_destruct_packet_nofree (AVPacket *pkt)
void av_destruct_packet (AVPacket *pkt)
 Default packet destructor.
void av_init_packet (AVPacket *pkt)
 Initialize optional fields of a packet with default values.
int av_new_packet (AVPacket *pkt, int size)
 Allocate the payload of a packet and initialize its fields with default values.
void av_shrink_packet (AVPacket *pkt, int size)
 Reduce packet size, correctly zeroing padding.
int av_grow_packet (AVPacket *pkt, int grow_by)
 Increase packet size, correctly zeroing padding.
int av_dup_packet (AVPacket *pkt)
void av_free_packet (AVPacket *pkt)
 Free a packet.
uint8_t * av_packet_new_side_data (AVPacket *pkt, enum AVPacketSideDataType type, int size)
 Allocate new information of a packet.
uint8_t * av_packet_get_side_data (AVPacket *pkt, enum AVPacketSideDataType type, int *size)
 Get side information from packet.
int av_packet_merge_side_data (AVPacket *pkt)
int av_packet_split_side_data (AVPacket *pkt)

Define Documentation

#define DUP_DATA ( dst,
padding   ) 


do { \
        void *data; \
        if (padding) { \
            if ((unsigned)(size) > (unsigned)(size) + FF_INPUT_BUFFER_PADDING_SIZE) \
                goto failed_alloc; \
            data = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE); \
        } else { \
            data = av_malloc(size); \
        } \
        if (!data) \
            goto failed_alloc; \
        memcpy(data, src, size); \
        if (padding) \
            memset((uint8_t*)data + size, 0, FF_INPUT_BUFFER_PADDING_SIZE); \
        dst = data; \
    } while(0)

Definition at line 103 of file avpacket.c.

Referenced by av_dup_packet().

#define FF_MERGE_MARKER   0x8c4d9d108e25e9feULL

Definition at line 200 of file avpacket.c.

Referenced by av_packet_merge_side_data(), and av_packet_split_side_data().

Function Documentation

void av_destruct_packet ( AVPacket pkt  ) 

void av_destruct_packet_nofree ( AVPacket pkt  ) 

use NULL instead

Definition at line 26 of file avpacket.c.

Referenced by av_dup_packet().

int av_dup_packet ( AVPacket pkt  ) 

This is a hack - the packet memory allocation stuff is broken. The packet is allocated if it was not really allocated.

Definition at line 121 of file avpacket.c.

Referenced by av_packet_split_side_data(), av_read_frame(), avformat_find_stream_info(), ff_interleave_add_packet(), and packet_queue_put().

void av_free_packet ( AVPacket pkt  ) 

Free a packet.

pkt packet to free

Definition at line 151 of file avpacket.c.

Referenced by adx_read_packet(), amr_read_packet(), applehttp_read_seek(), asf_read_header(), asf_read_pts(), asf_reset_header(), asfrtp_parse_packet(), audio_decode_frame(), audio_read_packet(), av_get_packet(), av_interleaved_write_frame(), av_packet_merge_side_data(), av_read_packet(), av_write_trailer(), avformat_free_context(), avi_read_close(), avs_read_video_packet(), cin_read_packet(), dfa_read_packet(), do_streamcopy(), dxa_read_packet(), estimate_timings_from_pts(), extract_mpeg4_header(), ff_asf_parse_packet(), ff_free_parser_state(), ff_raw_read_partial_packet(), ff_read_frame_flush(), ff_rm_free_rmstream(), ffm_read_packet(), flic_read_packet(), flush_packet_queue(), fourxm_read_packet(), free_packet_list(), free_pkt_fifo(), free_variant_list(), g723_1_read_packet(), gsm_read_packet(), http_prepare_data(), ingenient_read_packet(), load_ipmovie_packet(), lxf_read_packet(), main(), matroska_clear_queue(), mmf_read_packet(), modplug_read_packet(), mpc_read_packet(), mpc_read_seek(), mpegts_get_dts(), mpegts_raw_read_packet(), mxf_interleave_get_packet(), nc_read_packet(), nsv_read_close(), nuv_packet(), packet_queue_flush(), pulse_read_packet(), qt_rtp_parse_packet(), read_frame_internal(), read_packet(), read_thread(), rl2_read_packet(), rm_assemble_video_frame(), rm_read_packet(), rpl_read_packet(), sap_fetch_packet(), search_hi_lo_keyframes(), seek_frame_generic(), seek_subtitle(), spdif_read_packet(), str_read_close(), str_read_packet(), stream_component_close(), subtitle_thread(), thp_read_packet(), transcode(), vid_read_packet(), video_thread(), vmd_read_packet(), vqf_read_packet(), wc3_read_close(), write_frame(), wv_read_packet(), wv_read_seek(), xiph_handle_packet(), yop_read_close(), yop_read_packet(), and yop_read_seek().

int av_grow_packet ( AVPacket pkt,
int  grow_by 

Increase packet size, correctly zeroing padding.

pkt packet
grow_by number of bytes by which to increase the size of the packet

Definition at line 86 of file avpacket.c.

Referenced by av_append_packet().

void av_init_packet ( AVPacket pkt  ) 

int av_new_packet ( AVPacket pkt,
int  size 

Allocate the payload of a packet and initialize its fields with default values.

pkt packet
size wanted payload size
0 if OK, AVERROR_xxx otherwise

Definition at line 60 of file avpacket.c.

Referenced by a64_write_packet(), aac_parse_packet(), amr_handle_packet(), amr_read_packet(), ape_read_packet(), audio_read_packet(), av_get_packet(), av_grow_packet(), avisynth_read_packet(), avs_read_video_packet(), bmv_read_packet(), callback(), cin_read_packet(), decode_frame(), dxa_read_packet(), fbdev_read_packet(), ff_asf_parse_packet(), ff_interleave_new_audio_packet(), ff_raw_read_partial_packet(), ff_rm_retrieve_cache(), ffm_read_packet(), film_read_packet(), flic_read_packet(), fourxm_read_packet(), g723_1_read_packet(), grab_read_packet(), h263_handle_packet(), h264_handle_packet(), iff_read_packet(), ingenient_read_packet(), latm_parse_packet(), lavfi_read_packet(), load_ipmovie_packet(), lxf_read_packet(), matroska_parse_block(), microdvd_read_packet(), mmf_read_packet(), modplug_read_packet(), mpc_read_packet(), mpegts_raw_read_packet(), nut_read_packet(), nuv_packet(), ogg_read_packet(), pulse_read_packet(), qdm2_restore_block(), qt_rtp_parse_packet(), read_frame(), read_packet(), return_stored_frame(), rm_assemble_video_frame(), rm_read_audio_stream_info(), roq_read_packet(), rtp_parse_packet_internal(), seq_read_packet(), siff_read_packet(), smacker_read_packet(), spdif_read_packet(), srt_read_packet(), store_packet(), str_read_packet(), supply_new_packets(), swf_read_packet(), v4l2_read_packet(), videostream_cb(), vmd_read_packet(), vqf_read_packet(), wv_read_packet(), xiph_handle_packet(), and yop_read_packet().

uint8_t* av_packet_get_side_data ( AVPacket pkt,
enum AVPacketSideDataType  type,
int *  size 

Get side information from packet.

pkt packet
type desired side information type
size pointer for side information size to store (optional)
pointer to data if present or NULL otherwise

Definition at line 185 of file avpacket.c.

Referenced by cinepak_decode_frame(), decode_frame(), decode_tag(), idcin_decode_frame(), ipvideo_decode_frame(), msrle_decode_frame(), msvideo1_decode_frame(), qtrle_decode_frame(), raw_decode(), and smc_decode_frame().

int av_packet_merge_side_data ( AVPacket pkt  ) 

Definition at line 202 of file avpacket.c.

Referenced by av_read_packet().

uint8_t* av_packet_new_side_data ( AVPacket pkt,
enum AVPacketSideDataType  type,
int  size 

Allocate new information of a packet.

pkt packet
type side information type
size side information size
pointer to fresh allocated data or NULL otherwise

Definition at line 161 of file avpacket.c.

Referenced by ff_asf_parse_packet(), flv_read_packet(), idcin_read_packet(), load_ipmovie_packet(), and mov_read_packet().

int av_packet_split_side_data ( AVPacket pkt  ) 

Definition at line 236 of file avpacket.c.

Referenced by avcodec_decode_audio4(), and avcodec_decode_video2().

void av_shrink_packet ( AVPacket pkt,
int  size 

Reduce packet size, correctly zeroing padding.

pkt packet
size new size

Definition at line 79 of file avpacket.c.

Referenced by av_append_packet(), av_get_packet(), cin_read_packet(), ff_asf_parse_packet(), mxf_decrypt_triplet(), mxf_get_d10_aes3_packet(), nuv_packet(), and yop_read_packet().

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