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Macros | Functions | Variables
Memory Management
Common utility functions

Macros

#define  DECLARE_ALIGNED(n, t, v)   t v
 
#define  DECLARE_ASM_CONST(n, t, v)   static const t v
 
#define  av_malloc_attrib
 
#define  av_alloc_size(...)
 

Functions

  Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if available on the CPU).
 
  av_alloc_size (1, 2) static inline void *av_malloc_array(size_t nmemb
  Allocate a block of size * nmemb bytes with av_malloc().
 
 
voidav_realloc (void *ptr, size_t size) av_alloc_size(2)
  Allocate or reallocate a block of memory.
 
voidav_realloc_f (void *ptr, size_t nelem, size_t elsize)
  Allocate or reallocate a block of memory.
 
int  av_reallocp (void *ptr, size_t size)
  Allocate or reallocate a block of memory.
 
  Allocate or reallocate an array.
 
void  av_free (void *ptr)
  Free a memory block which has been allocated with av_malloc(z)() or av_realloc().
 
  Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if available on the CPU) and zero all the bytes of the block.
 
voidav_calloc (size_t nmemb, size_t size) av_malloc_attrib
  Allocate a block of nmemb * size bytes with alignment suitable for all memory accesses (including vectors if available on the CPU) and zero all the bytes of the block.
 
 
char *  av_strdup (const char *s) av_malloc_attrib
  Duplicate the string s.
 
voidav_memdup (const void *p, size_t size)
  Duplicate the buffer p.
 
void  av_freep (void *ptr)
  Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer pointing to it to NULL.
 
void  av_dynarray_add (void *tab_ptr, int *nb_ptr, void *elem)
  Add an element to a dynamic array.
 
voidav_dynarray2_add (void **tab_ptr, int *nb_ptr, size_t elem_size, const uint8_t *elem_data)
  Add an element of size elem_size to a dynamic array.
 
static int  av_size_mult (size_t a, size_t b, size_t *r)
  Multiply two size_t values checking for overflow.
 
void  av_max_alloc (size_t max)
  Set the maximum size that may me allocated in one block.
 
void  av_memcpy_backptr (uint8_t *dst, int back, int cnt)
  deliberately overlapping memcpy implementation
 

Variables

size_t  size
 
size_t  nmemb
 

Detailed Description

Macro Definition Documentation

#define DECLARE_ALIGNED (   n,
  t,
  v 
)    t v

Definition at line 59 of file mem.h.

Referenced by dering_altivec(), dering_TMPL(), doVertDefFilter_altivec(), doVertDefFilter_TMPL(), doVertLowPass_altivec(), encode_slice_plane(), ff_gmc1_altivec(), ff_h264_filter_mb(), ff_hevc_hls_residual_coding(), ff_simple_idct_vis(), ff_yuv2rgb_init_tables_ppc(), filter(), filter_mb_dir(), hls_prediction_unit(), intra_predict(), postProcess_TMPL(), pred_pskip_motion(), and vertClassify_altivec().

#define DECLARE_ASM_CONST (   n,
  t,
  v 
)    static const t v

Definition at line 60 of file mem.h.

#define av_malloc_attrib

Definition at line 66 of file mem.h.

#define av_alloc_size (   ... )

Definition at line 72 of file mem.h.

Function Documentation

void* av_malloc ( size_t  size )

Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if available on the CPU).

Parameters
size Size in bytes for the memory block to be allocated.
Returns
Pointer to the allocated block, NULL if the block cannot be allocated.
See Also
av_mallocz()

Definition at line 73 of file mem.c.

Referenced by a64multi_init_encoder(), aacPlus_encode_init(), add_file(), add_metadata(), adpcm_encode_init(), aic_decode_init(), alloc_buffer(), alloc_scratch_buffers(), alloc_sequence_buffers(), allocate_buffers(), allocate_frame_buffers(), ape_read_header(), ape_tag_read_field(), append_entry(), apply_color_indexing_transform(), asf_read_picture(), asf_write_header(), ass_decode_init(), ass_encode_init(), audio_encode_example(), av_asprintf(), av_audio_convert_alloc(), av_bprint_finalize(), av_buffer_alloc(), av_buffersink_params_alloc(), av_d2str(), av_expr_parse(), av_fifo_alloc(), av_file_map(), av_frame_new_side_data(), av_frame_ref(), av_get_token(), av_image_alloc(), av_malloc(), av_mallocz(), av_memdup(), av_opt_get(), av_opt_set_bin(), av_packet_split_side_data(), av_parser_change(), av_realloc(), av_samples_alloc(), av_tempfile(), avcodec_alloc_context3(), avformat_alloc_context(), avi_read_tag(), avi_write_packet(), avisynth_read_packet_audio(), avisynth_read_packet_video(), avresample_set_matrix(), bfi_read_header(), build_filter(), calc_rice_params(), celt_header(), cmdutils_read_file(), cng_encode_init(), config(), config_input(), config_output(), config_props(), convert_str(), copy_parameter_set(), create_all_formats(), create_cel_evals(), create_map(), create_vorbis_context(), data_open(), decode_dvd_subtitles(), decode_frame(), decode_header_trees(), decode_init(), decode_main_header(), decode_picture_header(), decode_rle(), decode_slice(), denoise_depth(), dnxhd_encode_init(), do_subtitle_out(), doubles2str(), dshow_add_device(), dshow_cycle_formats(), dtshd_read_header(), dump_extradata(), dup_wchar_to_utf8(), dvbsub_display_end_segment(), dvbsub_parse_clut_segment(), dvbsub_parse_init(), dvbsub_parse_region_segment(), dvdsub_parse(), dvdsub_parse_extradata(), ebml_read_ascii(), eightsvx_decode_frame(), encode_frame(), encode_init(), encode_picture_ls(), escape130_decode_init(), exif_decode_tag(), extract_header(), Faac_encode_init(), fdk_aac_decode_frame(), ff_ac3_float_mdct_init(), ff_alloc_entries(), ff_alloc_extradata(), ff_alsa_open(), ff_audio_data_realloc(), ff_bgmc_init(), ff_ccitt_unpack(), ff_dct_init(), ff_do_elbg(), ff_fast_malloc(), ff_fft_init(), ff_fill_line_with_color(), ff_filter_alloc(), ff_flac_parse_picture(), ff_gen_syncpoint_search(), ff_http_auth_create_response(), ff_huffyuv_alloc_temp(), ff_init_elbg(), ff_init_rl(), ff_init_vlc_sparse(), ff_jpeg2000_dwt_init(), ff_mdct_init(), ff_merge_channel_layouts(), ff_mjpeg_decode_sof(), ff_mjpeg_encode_init(), ff_mov_write_packet(), ff_mp_image_alloc_planes(), ff_MPV_common_frame_size_change(), ff_MPV_common_init(), ff_mss12_decode_init(), ff_parse_fmtp(), ff_pca_init(), ff_psy_init(), ff_rtmp_packet_create(), ff_rv34_decode_frame(), ff_sauce_read(), ff_slice_buffer_init(), ff_sndio_open(), ff_store_parser_state(), ff_tadd_string_metadata(), ff_tls_init(), ff_urldecode(), ff_vc1_decode_init_alloc_tables(), ff_vda_create_decoder(), ff_vorbis_comment(), ff_yuv2rgb_c_init_tables(), ffio_ensure_seekback(), ffio_fdopen(), ffio_set_buf_size(), fft_ref_init(), ffurl_get_multi_file_handle(), ffv1_allocate_initial_states(), ffv1_init_slice_contexts(), ffv1_init_slice_state(), film_read_header(), find_headers_search_validate(), find_motion(), find_next_parse_unit(), find_smallest_bounding_rectangle(), flac_encode_init(), flac_write_block_comment(), flashsv_decode_frame(), fourxm_read_header(), frame_list_add_frame(), frame_thread_init(), gen_sub_text(), generate_codebook(), generate_dither_noise(), generate_new_codebooks(), get_buffer_internal(), get_cookies(), get_geokey_val(), get_key(), get_meta(), get_metadata(), get_stats(), get_tag(), getstr8(), gif_encode_init(), gif_write_packet(), guess_dc(), halfpel_interpol(), hevc_init_context(), hls_read_header(), hls_slice_data_wpp(), hls_slice_header(), hls_write_header(), huff_reader_build_canonical(), iec61883_callback(), iff_read_header(), imx_dump_header(), init(), init_bundles(), init_coef_vlc(), init_cook_mlt(), init_er(), init_filter_param(), init_mv_table(), init_noise(), init_pass2(), init_pattern_from_file(), init_tiles(), initFilter(), interpolate(), interpolate_refplane(), iso88591_to_utf8(), ivi_init_tiles(), lag_decode_frame(), latm_decode_audio_specific_config(), lavfi_read_header(), libAVPin_Setup(), libopus_encode_init(), libschroedinger_decode_frame(), load_mask(), main(), make_digest_auth(), matroska_decode_buffer(), matroska_read_header(), mjpeg2jpeg_filter(), mjpeg_decode_com(), mjpega_dump_header(), mkv_strip_wavpack(), mmap_init(), mmap_read_frame(), modplug_read_header(), mov2textsub(), mov_create_timecode_track(), mov_metadata_raw(), mov_read_cmov(), mov_read_ctts(), mov_read_dref(), mov_read_ftyp(), mov_read_hdlr(), mov_read_sbgp(), mov_read_stco(), mov_read_stps(), mov_read_stsc(), mov_read_stss(), mov_read_stsz(), mov_read_stts(), mov_write_ctts_tag(), mov_write_header(), mov_write_stts_tag(), mp3_header_compress(), mp3_header_decompress(), mp3lame_encode_init(), mpc8_parse_seektable(), mpc_read_header(), mpegps_read_pes_header(), mpegts_open_section_filter(), mpegts_set_stream_info(), mpegts_write_header(), mpegts_write_packet_internal(), mss3_decode_init(), mss4_decode_init(), mxf_read_generic_descriptor(), mxf_read_utf16_string(), mxpeg_decode_mxm(), new_connection(), noise(), nsv_parse_NSVf_header(), nut_read_header(), ogg_new_buf(), ogg_new_stream(), ogg_read_page(), ogg_save(), oggvorbis_encode_init(), open_filter_param(), open_null_ctx(), open_output_file(), packet_queue_put_private(), parse_forced_key_frames(), parse_frames(), parse_MP4DecConfigDescrTag(), parse_options(), parse_playlist(), parse_presentation_segment(), parse_read_intervals(), parse_setup_header(), parse_times(), parse_vtrk(), pcm_dvd_decode_init(), pcx_decode_frame(), pic_arrays_init(), piz_uncompress(), pp_get_context(), pp_get_mode_by_name_and_quality(), precalc_coefs(), prepare_sdp_description(), print_sdp(), process_line(), prores_encode_init(), queue_frames(), r3d_read_rdvo(), radix_sort(), read_ffserver_streams(), read_frame(), read_geobtag(), read_header(), read_header_gme(), read_shape_from_file(), read_specific_config(), ready_codebook(), recv_msg(), redspark_read_header(), rl2_read_header(), rm_write_audio(), roq_dpcm_encode_init(), roq_encode_init(), rtmp_calc_swfhash(), rtmp_open(), rtp_get_multi_file_handle(), rtp_new_connection(), rtp_parse_mp4_au(), rtp_write_header(), rv34_decoder_alloc(), sample_queue_retain(), sdp_parse_fmtp_config_h264(), seq_init_frame_buffers(), set_string_binary(), shift_data(), smacker_read_header(), smjpeg_read_header(), sox_read_header(), spdif_write_header(), Stagefright_decode_frame(), start_jack(), submit_stats(), sunrast_decode_frame(), svq1_decode_frame(), svq1_encode_frame(), svq3_decode_init(), swf_read_header(), swf_read_packet(), swri_get_dither(), sws_allocVec(), sws_getDefaultFilter(), sws_init_context(), sws_scale(), tak_read_header(), teletext_decode_frame(), text2movsub(), tgv_decode_frame(), tiff_decode_tag(), tiff_unpack_fax(), tscc2_decode_init(), tta_encode_init(), unescape(), unpack_codebook(), update_size(), utvideo_decode_init(), utvideo_encode_init(), var_read_string(), vble_decode_init(), vfw_read_header(), vid_read_packet(), video_audio_display(), vmd_read_header(), vmdvideo_decode_init(), vorbis_parse_id_hdr(), vorbis_parse_setup_hdr_codebooks(), vorbis_parse_setup_hdr_floors(), vorbis_parse_setup_hdr_residues(), vp56_size_changed(), vp8_encode(), vpx_init(), vqa_decode_init(), vs_set_mem_and_log_functions(), wavesynth_init(), wc3_read_header(), write_extradata(), write_frame(), wtvfile_open_sector(), X264_init(), xan_decode_init(), XAVS_init(), xiph_handle_packet(), xiph_parse_fmtp_pair(), xmv_read_header(), xvid_encode_init(), xvid_strip_vol_header(), and xwma_read_header().

av_alloc_size ( 1  ,
2   
)

Allocate a block of size * nmemb bytes with av_malloc().

Allocate a block of size * nmemb bytes with av_mallocz().

Parameters
nmemb Number of elements
size Size of the single element
Returns
Pointer to the allocated block, NULL if the block cannot be allocated.
See Also
av_malloc()
Parameters
nmemb Number of elements
size Size of the single element
Returns
Pointer to the allocated block, NULL if the block cannot be allocated.
See Also
av_mallocz()
av_malloc_array()
return av_malloc ( nmembsize )
void* av_realloc ( voidptr,
size_t  size 
)

Allocate or reallocate a block of memory.

If ptr is NULL and size > 0, allocate a new block. If size is zero, free the memory block pointed to by ptr.

Parameters
ptr Pointer to a memory block already allocated with av_realloc() or NULL.
size Size in bytes of the memory block to be allocated or reallocated.
Returns
Pointer to a newly-reallocated block or NULL if the block cannot be reallocated or the function is used to free the memory block.
Warning
Pointers originating from the av_malloc() family of functions must not be passed to av_realloc(). The former can be implemented using memalign() (or other functions), and there is no guarantee that pointers from such functions can be passed to realloc() at all. The situation is undefined according to POSIX and may crash with some libc implementations.
See Also
av_fast_realloc()

Definition at line 141 of file mem.c.

Referenced by add_file(), add_serial_pair(), alloc_and_copy(), allocate_buffers(), append_to_cached_buf(), ass_split_section(), av_bprint_alloc(), av_bprint_finalize(), av_buffer_realloc(), av_dict_set(), av_dynarray2_add(), av_dynarray_add(), av_fast_realloc(), av_frame_new_side_data(), av_packet_new_side_data(), av_realloc_array(), av_realloc_f(), av_reallocp(), av_strdup(), avfilter_graph_alloc_filter(), concat_open(), concatenate_packet(), decode_frame(), draw_text(), ff_alsa_extend_reorder_buf(), ff_ass_add_rect(), filter_frame(), fixup_vorbis_headers(), flashsv_decode_frame(), g2m_load_cursor(), grow_array(), h264_extradata_to_annexb(), handle_file(), jpg_decode_data(), libschroedinger_encode_frame(), load_textfile(), main(), matroska_decode_buffer(), matroska_deliver_packet(), matroska_parse_wavpack(), mov_read_trun(), new_video_stream(), nut_read_header(), ogg_new_stream(), probe_codec(), qt_rtp_parse_packet(), realloc_buffer(), realloc_section_array(), reconfigure_at_keyframe(), update_context_from_user(), vc1_decode_frame(), vs_set_mem_and_log_functions(), and xan_decode_frame().

void* av_realloc_f ( voidptr,
size_t  nelem,
size_t  elsize 
)

Allocate or reallocate a block of memory.

This function does the same thing as av_realloc, except:

  • It takes two arguments and checks the result of the multiplication for integer overflow.
  • It frees the input block in case of failure, thus avoiding the memory leak with the classic "buf = realloc(buf); if (!buf) return -1;".

Definition at line 168 of file mem.c.

Referenced by alloc_array_elem(), alloc_table(), av_reallocp_array(), avi_write_packet(), config_input(), config_output(), copy_chapters(), decode_frame(), ffio_rewind_with_probe_data(), huf_build_dec_table(), init(), mov_read_uuid(), parse_commands(), parse_forced_key_frames(), parse_intervals(), queue_frames(), and read_whole_file().

int av_reallocp ( voidptr,
size_t  size 
)

Allocate or reallocate a block of memory.

If *ptr is NULL and size > 0, allocate a new block. If size is zero, free the memory block pointed to by ptr.

Parameters
ptr Pointer to a pointer to a memory block already allocated with av_realloc(), or pointer to a pointer to NULL. The pointer is updated on success, or freed on failure.
size Size in bytes for the memory block to be allocated or reallocated
Returns
Zero on success, an AVERROR error code on failure.
Warning
Pointers originating from the av_malloc() family of functions must not be passed to av_reallocp(). The former can be implemented using memalign() (or other functions), and there is no guarantee that pointers from such functions can be passed to realloc() at all. The situation is undefined according to POSIX and may crash with some libc implementations.

Definition at line 183 of file mem.c.

Referenced by add_fragment(), add_tracked_method(), append_flv_data(), asfrtp_parse_packet(), av_probe_input_buffer2(), avi_read_header(), bmv_read_packet(), concat_open(), decode_frame(), dyn_buf_write(), fixup_vorbis_headers(), get_tcp_server_response(), handle_metadata(), mov_read_extradata(), qt_rtp_parse_packet(), rdt_parse_sdp_line(), rtmp_http_write(), rtmp_open(), smacker_read_packet(), and theora_header().

av_alloc_size ( 2  ,
3   
)

Allocate or reallocate an array.

Allocate or reallocate an array through a pointer to a pointer.

If ptr is NULL and nmemb > 0, allocate a new block. If nmemb is zero, free the memory block pointed to by ptr.

Parameters
ptr Pointer to a memory block already allocated with av_realloc() or NULL.
nmemb Number of elements
size Size of the single element
Returns
Pointer to a newly-reallocated block or NULL if the block cannot be reallocated or the function is used to free the memory block.
Warning
Pointers originating from the av_malloc() family of functions must not be passed to av_realloc(). The former can be implemented using memalign() (or other functions), and there is no guarantee that pointers from such functions can be passed to realloc() at all. The situation is undefined according to POSIX and may crash with some libc implementations.

If *ptr is NULL and nmemb > 0, allocate a new block. If nmemb is zero, free the memory block pointed to by ptr.

Parameters
ptr Pointer to a pointer to a memory block already allocated with av_realloc(), or pointer to a pointer to NULL. The pointer is updated on success, or freed on failure.
nmemb Number of elements
size Size of the single element
Returns
Zero on success, an AVERROR error code on failure.
Warning
Pointers originating from the av_malloc() family of functions must not be passed to av_realloc(). The former can be implemented using memalign() (or other functions), and there is no guarantee that pointers from such functions can be passed to realloc() at all. The situation is undefined according to POSIX and may crash with some libc implementations.
void av_free ( voidptr )

Free a memory block which has been allocated with av_malloc(z)() or av_realloc().

Parameters
ptr Pointer to the memory block which should be freed.
Note
ptr = NULL is explicitly allowed.
It is recommended that you use av_freep() instead.
See Also
av_freep()

Definition at line 219 of file mem.c.

Referenced by a64multi_close_encoder(), aac_decode_frame(), add_file(), add_pes_stream(), amr_free_context(), ape_tag_read_field(), append_entry(), apply_color_indexing_transform(), asfrtp_free_context(), asfrtp_parse_packet(), atrac3_decode_close(), audio_decode_example(), audio_encode_example(), av_audio_convert_free(), av_audio_fifo_free(), av_bitstream_filter_close(), av_buffer_default_free(), av_dict_free(), av_dict_set(), av_dump_format(), av_expr_parse(), av_fft_end(), av_fifo_free(), av_fifo_realloc2(), av_file_unmap(), av_freep(), av_hash_alloc(), av_hmac_alloc(), av_hmac_free(), av_image_alloc(), av_opt_get_key_value(), av_opt_query_ranges_default(), av_opt_set_bin(), av_opt_set_from_string(), av_packet_free_side_data(), av_parser_close(), av_parser_init(), av_probe_input_buffer2(), av_realloc_f(), av_samples_alloc(), av_tree_destroy(), avcodec_alloc_context3(), avcodec_copy_context(), avfilter_free(), avfilter_get_video_buffer_ref_from_arrays(), avfilter_init_str(), avformat_free_context(), avformat_new_stream(), avi_read_close(), avio_close(), avio_close_dyn_buf(), avpicture_free(), avpriv_dv_init_demux(), bfi_decode_close(), build_filter(), caf_write_packet(), callback(), celt_header(), channelmap_filter_frame(), check_field_queue(), close(), close_audio(), close_connection(), close_null_ctx(), close_video(), cmdutils_read_file(), cng_decode_close(), cng_encode_close(), concat_open(), config_input(), config_output(), convert_str(), cook_decode_close(), copy_frame(), create_filter(), data_open(), decode_end(), decode_frame(), decode_lowdelay(), decode_slice(), decode_text_chunk(), decode_thread(), decode_video(), delete_cluts(), delete_objects(), delete_region_display_list(), delete_regions(), dilate_init(), dirac_parse_close(), dnxhd_encode_end(), do_adobe_auth(), do_llnw_auth(), doTest(), doubles2str(), dshow_cycle_formats(), dshow_cycle_pins(), dshow_read_close(), dshow_read_packet(), dv1394_close(), dv_read_close(), dv_read_timecode(), dvbsub_close_decoder(), dvbsub_parse_page_segment(), dvbsub_parse_region_segment(), dvdsub_parse_extradata(), ebml_free(), ebml_read_ascii(), encode_close(), encode_dvd_subtitles(), encode_end(), encode_frame(), encode_picture_ls(), enu_free(), escape124_decode_close(), escape124_decode_frame(), fdk_aac_decode_frame(), ff_ass_split_free(), ff_audio_data_alloc(), ff_audio_data_free(), ff_audio_mix_alloc(), ff_audio_mix_free(), ff_audio_mix_set_matrix(), ff_audio_resample_free(), ff_audio_resample_init(), ff_cavs_end(), ff_ccitt_unpack(), ff_command_queue_pop(), ff_create_schro_frame(), ff_dct_end(), ff_dct_init(), ff_dither_free(), ff_do_elbg(), ff_fast_malloc(), ff_filter_alloc(), ff_free_mp_image(), ff_free_parser_state(), ff_gen_syncpoint_search(), ff_get_wav_header(), ff_h264_decode_picture_parameter_set(), ff_h264_decode_seq_parameter_set(), ff_hevc_decode_nal_vps(), ff_http_auth_create_response(), ff_http_match_no_proxy(), ff_iir_filter_free_coeffs(), ff_iir_filter_free_state(), ff_init_elbg(), ff_init_vlc_sparse(), ff_isom_write_avcc(), ff_jpegls_decode_picture(), ff_mjpeg_decode_end(), ff_mjpeg_encode_close(), ff_mov_add_hinted_packet(), ff_mov_close_hinting(), ff_mov_write_packet(), ff_mp4_read_dec_config_descr(), ff_mpegts_parse_close(), ff_nut_add_sp(), ff_parse_fmtp(), ff_pca_free(), ff_png_zfree(), ff_psy_preprocess_end(), ff_rdt_parse_close(), ff_read_packet(), ff_restore_parser_state(), ff_rtmp_calc_digest(), ff_rtp_chain_mux_open(), ff_rtp_check_and_send_back_rr(), ff_rtp_parse_close(), ff_rtp_reset_packet_queue(), ff_rtp_send_punch_packets(), ff_rtp_send_rtcp_feedback(), ff_rtsp_close_streams(), ff_rtsp_setup_output_streams(), ff_rtsp_undo_setup(), ff_snow_alloc_blocks(), ff_snow_release_buffer(), ff_store_parser_state(), ff_tls_deinit(), ff_twinvq_decode_close(), ff_vf_get_image(), ff_wma_end(), ff_wms_parse_sdp_a_line(), ff_xvid_rate_control_init(), ffio_close_null_buf(), ffio_ensure_seekback(), ffio_fdopen(), ffio_rewind_with_probe_data(), ffio_set_buf_size(), ffmpeg_cleanup(), find_and_decode_index(), find_motion(), flac_parse(), flac_parse_close(), flac_read_header(), flashsv_encode_end(), flv_get_extradata(), flv_queue_extradata(), flv_write_packet(), fourxm_read_header(), frame_list_clear(), frame_list_remove_samples(), free_context(), free_entries(), free_filter_param(), free_fragment_if_needed(), free_frame_if_needed(), free_geobtag(), free_packet_list(), free_segment_list(), free_temp(), free_tracked_methods(), free_variant_list(), frei0r_init(), ftp_connect_control_connection(), ftp_current_dir(), ftp_file_size(), ftp_passive_mode(), g2m_init_buffers(), gen_sub_text(), generate_codebook(), generate_new_codebooks(), get_buffer2(), get_cookies(), get_meta(), get_metadata(), get_private_data(), get_tag(), glyph_enu_free(), guess_ni_flag(), h263_free_context(), h263_handle_packet(), h264_extradata_to_annexb(), h264_free_context(), handle_file(), handle_invoke_error(), handle_invoke_result(), hls_slice_data_wpp(), hls_write_header(), hls_write_trailer(), http_connect(), http_parse_request(), http_receive_data(), huf_uncompress(), huff_reader_build_canonical(), id3v2_parse(), iec61883_close(), iec61883_parse_queue_dv(), iec61883_parse_queue_hdv(), image_ctx_free(), img_read_header(), init(), init_coef_vlc(), init_cook_mlt(), init_filters(), init_pass2(), init_pattern_from_file(), init_report(), initFilter(), interpolate(), ism_flush(), ism_free(), jacosub_decode_frame(), jpeg_free_context(), latm_decode_audio_specific_config(), latm_free_context(), latm_parse_packet(), lavfi_read_header(), libopus_encode(), libschroedinger_decode_frame(), libschroedinger_free_frame(), link_filter_inouts(), load_path(), m4sl_cb(), main(), make_digest_auth(), make_field_queue(), matroska_clear_queue(), matroska_decode_buffer(), matroska_deliver_packet(), matroska_parse_block(), matroska_parse_frame(), matroska_parse_rm_audio(), matroska_parse_webvtt(), matroska_read_close(), matroska_read_header(), mimic_decode_end(), mjpeg_decode_com(), mkv_flush_dynbuf(), mkv_write_attachments(), mkv_write_block(), mkv_write_codecprivate(), mkv_write_seekhead(), mmap_close(), mmap_init(), mmap_release_buffer(), mms_close(), mmsh_read_seek(), mov_create_chapter_track(), mov_create_timecode_track(), mov_flush_fragment(), mov_read_cmov(), mov_read_dref(), mov_read_dvc1(), mov_read_glbl(), mov_read_packet(), mov_read_strf(), mov_read_stsz(), mov_read_uuid(), mov_read_wave(), mov_write_ctts_tag(), mov_write_dvc1_structs(), mov_write_isml_manifest(), mov_write_stts_tag(), mov_write_udta_tag(), mpc8_parse_seektable(), mpeg_mux_init(), mpegps_read_pes_header(), mpegts_close_filter(), mpegts_free_context(), mpegts_open_section_filter(), mpegts_set_stream_info(), mpegts_write_end(), mpegts_write_header(), mpegts_write_packet_internal(), mxf_compute_index_tables(), mxf_get_sorted_table_segments(), mxf_read_generic_descriptor(), mxf_read_local_tags(), new_connection(), new_output_stream(), new_stream(), nsv_parse_NSVf_header(), nsv_read_close(), nut_read_header(), ogg_new_buf(), ogg_read_packet(), ogg_read_page(), ogg_restore(), ogg_write_page(), ogm_chapter(), open_null_ctx(), open_slave(), opt_channel_layout(), opt_old2new(), opt_qscale(), opt_show_entries(), opt_show_format_entry(), opt_timecode(), opt_vstats_file(), packet_queue_get(), parse_bsfs(), parse_device_name(), parse_filter(), parse_fmtp_config(), parse_frames(), parse_inputs(), parse_interval(), parse_key_value_pair(), parse_options(), parse_outputs(), parse_read_interval(), parse_read_intervals(), parse_setup_header(), parse_times(), parse_video_var(), pcx_decode_frame(), pmt_cb(), pp_free_context(), pp_free_mode(), pp_get_mode_by_name_and_quality(), prepare_sdp_description(), print_codecs(), process_line(), process_options(), put_packet(), qcelp_free_context(), qdm2_extradata_free(), qt_rtp_free(), qt_rtp_parse_packet(), qtrle_encode_end(), queue_frames(), radix_sort(), rdt_free_context(), rdt_new_context(), read_chapter(), read_frame(), read_geobtag(), read_huffman_code_normal(), read_shape_from_file(), read_tag(), read_whole_file(), reallocAlign(), redspark_read_header(), release_buffer(), resample_init(), rl2_decode_end(), rl2_read_header(), rm_write_audio(), roq_encode_end(), roq_encode_video(), rtmp_open(), rtp_close(), rtp_new_av_stream(), rtp_new_connection(), rtp_parse_mp4_au(), rtp_parse_queued_packet(), rtsp_cmd_describe(), sami_paragraph_to_ass(), sample_queue_free(), sample_queue_pop(), sap_write_header(), sbg_read_header(), sdp_parse_fmtp_config_h264(), sdt_cb(), seg_write_trailer(), segment_list_print_entry(), seq_read_close(), set_enable_expr(), set_expr(), set_params(), set_string_binary(), shift_data(), show_codecs(), show_stream(), smacker_decode_header_tree(), smka_decode_frame(), sp5x_decode_frame(), Stagefright_decode_frame(), storeframe(), stream_close(), stream_open(), svq1_decode_frame(), svq3_decode_init(), svq3_extradata_free(), svq3_parse_packet(), swri_get_dither(), sws_addVec(), sws_convVec(), sws_freeContext(), sws_freeFilter(), sws_freeVec(), sws_scale(), sws_shiftVec(), sws_subVec(), tcp_write_packet(), teletext_decode_frame(), tgv_decode_end(), thread_entry(), thread_free(), thread_init_internal(), tiff_unpack_fax(), tm2_build_huff_table(), tm2_free_codes(), tqi_decode_end(), try_load(), tta_decode_close(), uninit(), update_context_from_user(), update_size(), url_open_dyn_buf_internal(), var_read_float(), var_read_int(), vc1_decode_frame(), vc1_decode_init(), vc1_extract_headers(), vda_h264_end_frame(), vda_h264_release_buffer(), vfw_read_close(), vfw_read_packet(), video_audio_display(), video_decode_example(), video_encode_example(), videostream_cb(), vmd_read_header(), vorbis_free(), vorbis_parse_setup_hdr_codebooks(), vp56_size_changed(), vp6_decode_free(), vp8_encode(), vp8_free_buffer(), vp8_free_context(), vs_set_mem_and_log_functions(), wavesynth_close(), wavesynth_init(), worker(), write_audio_frame(), write_globalinfo(), write_header_chunk(), write_headers(), write_streaminfo(), write_trailer(), wtvfile_close(), wtvfile_open_sector(), x11grab_read_header(), X264_close(), XAVS_close(), xiph_free_context(), xiph_parse_fmtp_pair(), xmv_process_packet_header(), and xwma_read_header().

void* av_mallocz ( size_t  size )

Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if available on the CPU) and zero all the bytes of the block.

Parameters
size Size in bytes for the memory block to be allocated.
Returns
Pointer to the allocated block, NULL if it cannot be allocated.
See Also
av_malloc()

Definition at line 241 of file mem.c.

Referenced by a64multi_init_encoder(), aac_adtstoasc_filter(), aac_decode_frame(), aac_encode_init(), add_av_stream1(), add_codec(), add_fragment(), add_input_streams(), add_pes_stream(), add_to_pktbuf(), add_to_queue(), aiff_write_packet(), alac_encode_init(), alloc_scratch_buffers(), alloc_sequence_buffers(), allocate_buffers(), allocate_tables(), amr_new_context(), asf_read_stream_properties(), asfrtp_new_context(), atrac3_decode_init(), audio_get_buffer(), av_abuffersink_params_alloc(), av_aes_alloc(), av_alloc_vdpaucontext(), av_audio_fifo_alloc(), av_bitstream_filter_init(), av_buffer_create(), av_buffer_pool_init(), av_buffer_ref(), av_calloc(), av_dict_set(), av_dump_format(), av_expr_parse(), av_fft_init(), av_fifo_alloc(), av_frame_alloc(), av_frame_new_side_data(), av_frame_ref(), av_hash_alloc(), av_hmac_alloc(), av_md5_alloc(), av_murmur3_alloc(), av_new_program(), av_opencl_alloc_external_env(), av_opencl_get_device_list(), av_opt_query_ranges_default(), av_packet_new_side_data(), av_packet_split_side_data(), av_parser_init(), av_ripemd_alloc(), av_sha512_alloc(), av_sha_alloc(), av_tree_node_alloc(), avcodec_fill_audio_frame(), avcodec_get_context_defaults3(), avcodec_open2(), avfilter_get_video_buffer_ref_from_arrays(), avfilter_graph_alloc(), avfilter_graph_queue_command(), avfilter_inout_alloc(), avfilter_link(), avformat_alloc_output_context2(), avformat_find_stream_info(), avformat_new_stream(), avformat_open_input(), avi_read_header(), avi_write_header(), avio_alloc_context(), avisynth_load_library(), avpriv_dv_init_demux(), avpriv_new_chapter(), avresample_alloc_context(), avui_encode_init(), bfi_decode_init(), callback(), channelmap_filter_frame(), che_configure(), check_field_queue(), cng_decode_init(), compute_mask(), compute_mask_matrix(), config(), config_output(), configure_filtergraph(), cook_decode_init(), copy_chapters(), decode_dvd_subtitles(), decode_init(), decode_lowdelay(), decode_pic(), decode_picture_header(), decode_thread(), DEF_CHOOSE_FORMAT(), dfa_decode_init(), display_end_segment(), doTest(), dv_read_timecode(), dvbsub_display_end_segment(), dvbsub_parse_display_definition_segment(), dvbsub_parse_page_segment(), dvbsub_parse_region_segment(), encode_init(), encode_picture_ls(), enqueue_packet(), extract_mpeg4_header(), ff_all_channel_counts(), ff_all_channel_layouts(), ff_all_samplerates(), ff_alloc_entries(), ff_ass_add_rect(), ff_ass_split(), ff_audio_data_alloc(), ff_audio_mix_alloc(), ff_audio_resample_init(), ff_avc_write_annexb_extradata(), ff_cavs_init_top_lines(), ff_create_schro_frame(), ff_dither_alloc(), ff_fast_malloc(), ff_filter_alloc(), ff_frame_thread_encoder_init(), ff_graph_thread_init(), ff_h264_decode_picture_parameter_set(), ff_h264_decode_seq_parameter_set(), ff_hevc_decode_nal_pps(), ff_hevc_decode_nal_vps(), ff_huffyuv_alloc_temp(), ff_iir_filter_init_state(), ff_interleave_add_packet(), ff_intrax8_common_init(), ff_ivi_init_planes(), ff_ivi_init_tiles(), ff_jpegls_decode_picture(), ff_lpc_init(), ff_lzw_decode_open(), ff_merge_channel_layouts(), ff_mjpeg_decode_sof(), ff_mpegts_parse_open(), ff_nut_add_sp(), ff_pca_init(), ff_psy_init(), ff_psy_preprocess_init(), ff_rate_control_init(), ff_rdt_parse_open(), ff_read_riff_info(), ff_rm_alloc_rmstream(), ff_rtp_parse_open(), ff_rtsp_setup_output_streams(), ff_schro_queue_push_back(), ff_slice_buffer_init(), ff_snow_alloc_blocks(), ff_snow_common_init_after_header(), ff_timefilter_new(), ff_vc1_decode_init_alloc_tables(), ff_wms_parse_sdp_a_line(), ffurl_register_protocol(), ffv1_init_slice_contexts(), find_headers_search_validate(), flac_read_header(), flashsv2_encode_init(), flashsv_decode_frame(), flashsv_encode_frame(), flashsv_encode_init(), flv_queue_extradata(), flv_write_header(), frame_thread_init(), g2m_init_buffers(), g722_encode_init(), gen_sub_bitmap(), get_audio_buffer(), get_buffer(), get_buffer2(), get_buffer_internal(), get_device_list(), get_http_header_data(), get_private_data(), get_siz(), gif_encode_init(), gxf_write_header(), h263_new_context(), h264_new_context(), h264_slice_header_init(), handle_file(), handler(), hevc_init(), hevc_init_context(), http_prepare_data(), http_server(), ico_write_header(), iec61883_callback(), init(), init_er(), init_input_filter(), init_muxer(), init_parse_context(), init_pattern_from_string(), init_tiles(), ism_write_header(), join_config_output(), join_init(), join_request_frame(), jpeg_new_context(), latm_new_context(), lavfi_read_header(), libopus_encode_init(), libschroedinger_encode_frame(), link_filter_inouts(), load_glyph(), main(), make_eval_expr(), make_field_queue(), make_point(), matroska_parse_frame(), matroska_parse_laces(), matroska_parse_rm_audio(), matroska_parse_webvtt(), matroska_read_header(), mkv_start_cues(), mkv_start_seekhead(), mkv_write_header(), mmsh_open_internal(), mmsh_read_seek(), mov_read_chapters(), mov_read_covr(), mov_read_dref(), mov_read_trak(), mov_read_uuid(), mov_text_encode_init(), mov_write_dvc1_structs(), mov_write_header(), mp_decode_init(), mpeg_mux_init(), mpeg_mux_write_packet(), mpegts_add_service(), mpegts_new_context(), mpegts_open_pes_filter(), mpegts_open_section_filter(), mpegts_write_header(), mss2_decode_init(), mxf_read_local_tags(), mxf_timestamp_to_str(), mxf_uid_to_str(), mxf_write_header(), mxpeg_decode_mxm(), new_connection(), new_context(), new_output_stream(), new_stream(), new_variant(), new_video_stream(), nsv_parse_NSVf_header(), nsv_parse_NSVs_header(), ogg_buffer_page(), ogg_build_flac_headers(), ogg_build_opus_headers(), ogg_build_speex_headers(), ogg_save(), ogg_write_header(), ogg_write_vorbiscomment(), opaque_list_push(), open_input_file(), open_output_file(), opt_channel_layout(), opt_filter_complex(), opt_filter_complex_script(), opus_header(), paf_vid_init(), parse_acl_row(), parse_dynamic_acl(), parse_ffconfig(), parse_fmtp_config(), parse_inputs(), parse_keyframes_index(), parse_primary(), parse_sws_flags(), pic_arrays_init(), pool_alloc_buffer(), prepare_sdp_description(), psy_3gpp_init(), pthread_cond_init(), pthread_create(), put_main_header(), qcelp_new_context(), qdm2_extradata_new(), qt_rtp_new(), qt_rtp_parse_packet(), qtrle_encode_init(), rdt_new_context(), rdt_parse_b64buf(), read_apic(), read_geobtag(), read_header(), read_shape_from_file(), read_tfra(), ready_codebook(), ready_residue(), reallocAlign(), resample_init(), rl2_decode_init(), roq_encode_init(), rtp_new_av_stream(), rtp_new_connection(), rtp_parse_addr_list(), rtsp_read_header(), rv34_decoder_alloc(), sap_write_header(), segment_end(), setup_find_stream_info_opts(), smacker_decode_header_tree(), smka_decode_frame(), sp5x_decode_frame(), speex_header(), Stagefright_close(), Stagefright_decode_frame(), Stagefright_init(), stream_open(), svq1_encode_init(), svq1_encode_plane(), svq3_decode_init(), svq3_extradata_new(), swr_alloc(), swri_realloc_audio(), swri_rematrix_init(), swri_rematrix_init_x86(), sws_alloc_context(), theora_header(), thread_init_internal(), tiff_decode_tag(), transcode_init(), update_dimensions(), url_alloc_for_protocol(), url_open_dyn_buf_internal(), utvideo_encode_init(), vc1_decode_frame(), vc1_decode_init(), vc1_extract_headers(), vda_h264_end_frame(), vf_open(), videostream_cb(), vorbis_header(), vorbis_parse_id_hdr(), vorbis_parse_setup_hdr_codebooks(), vorbis_parse_setup_hdr_floors(), vorbis_parse_setup_hdr_mappings(), vorbis_parse_setup_hdr_modes(), vorbis_parse_setup_hdr_residues(), vp6_decode_init(), vp8_new_context(), vs_set_mem_and_log_functions(), wmv2_encode_init(), worker(), writer_open(), wtvfile_open_sector(), wv_alloc_frame_context(), XAVS_init(), xiph_new_context(), and xwma_read_header().

void* av_calloc ( size_t  nmemb,
size_t  size 
)

Allocate a block of nmemb * size bytes with alignment suitable for all memory accesses (including vectors if available on the CPU) and zero all the bytes of the block.

The allocation will fail if nmemb * size is greater than or equal to INT_MAX.

Parameters
nmemb
size
Returns
Pointer to the allocated block, NULL if it cannot be allocated.

Definition at line 249 of file mem.c.

Referenced by alloc_metrics(), av_samples_alloc_array_and_samples(), config_audio_output(), config_input(), config_output(), config_props(), config_video_output(), connect_ports(), decode_init(), decode_main_header(), encode_dvd_subtitles(), ff_avfilter_graph_config_pointers(), ff_jpeg2000_init_component(), ff_pca_init(), get_codecs_sorted(), get_histogram(), guess_ni_flag(), huf_uncompress(), init(), init_pattern_from_file(), interpolate(), movie_common_init(), mxf_compute_index_tables(), mxf_compute_ptses_fake_index(), mxf_get_sorted_table_segments(), mxf_read_content_storage(), mxf_read_generic_descriptor(), mxf_read_index_entry_array(), mxf_read_material_package(), mxf_read_primer_pack(), mxf_read_sequence(), mxf_read_source_package(), nut_write_header(), open_slave(), probe_file(), resample_init(), set_enable_expr(), swri_rematrix_init(), tm2_build_huff_table(), and wavesynth_parse_extradata().

return av_mallocz ( nmembsize )
char* av_strdup ( const char *  s )

Duplicate the string s.

Parameters
s string to be duplicated
Returns
Pointer to a newly-allocated string containing a copy of s or NULL if the string cannot be allocated.

Definition at line 256 of file mem.c.

Referenced by add_codec(), add_tracked_method(), av_dict_set(), av_opt_get(), av_tempfile(), avcodec_copy_context(), avfilter_graph_parse(), avfilter_graph_queue_command(), avfilter_init_str(), caca_write_header(), choose_pix_fmts(), configure_filtergraph(), decimate_init(), dilate_init(), ebml_parse_nest(), ff_filter_alloc(), ff_http_match_no_proxy(), ffm2_read_header(), ffm_read_header(), fieldmatch_init(), frei0r_init(), geq_init(), get_cookies(), get_geokey_val(), get_ost_filters(), grab_read_header(), img_read_header(), init(), init_filters(), join_init(), lavfi_read_header(), main(), microdvd_read_header(), mkv_write_simpletag(), movie_common_init(), mpegts_add_service(), mtv_read_header(), new_audio_stream(), new_video_stream(), open_output_file(), opt_filter_complex(), opt_map(), opt_vstats_file(), parse_bsfs(), parse_device_name(), parse_ffconfig(), parse_fmtp(), parse_frames(), parse_psfile(), parse_read_interval(), parse_read_intervals(), parse_source_list(), parse_times(), parse_video_var(), process_line(), read_ttag(), realtext_read_header(), sami_paragraph_to_ass(), sap_read_header(), sdl_write_header(), seg_write_header(), set_enable_expr(), set_expr(), set_options(), set_string(), show_help(), split_init(), Stagefright_init(), write_option(), x11grab_read_header(), X264_init(), and xv_write_header().

void* av_memdup ( const voidp,
size_t  size 
)

Duplicate the buffer p.

Parameters
p buffer to be duplicated
Returns
Pointer to a newly allocated buffer containing a copy of p or NULL if the buffer cannot be allocated.

Definition at line 268 of file mem.c.

Referenced by clone_filter_formats(), and init_thread_copy().

void av_freep ( voidptr )

Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer pointing to it to NULL.

Parameters
ptr Pointer to the pointer to the memory block which should be freed.
See Also
av_free()

Definition at line 234 of file mem.c.

Referenced by aac_decode_close(), aac_encode_close(), aac_encode_end(), aacPlus_encode_close(), add_file(), adpcm_encode_close(), adx_read_header(), aic_decode_close(), aiff_write_packet(), aiff_write_trailer(), alac_decode_close(), alac_encode_close(), alloc_metrics(), alloc_scratch_buffers(), allocate_buffers(), ape_decode_close(), ape_read_close(), ape_tag_read_field(), append_to_cached_buf(), asf_read_picture(), asf_read_stream_properties(), asf_write_header1(), asf_write_markers(), asf_write_trailer(), asfrtp_free_context(), asfrtp_parse_packet(), atrac3_decode_init(), audio_encode_example(), audio_get_buffer(), av_asprintf(), av_bitstream_filter_close(), av_bprint_finalize(), av_buffer_alloc(), av_buffer_create(), av_buffer_realloc(), av_buffer_unref(), av_dict_free(), av_dict_set(), av_dynarray2_add(), av_dynarray_add(), av_expr_free(), av_fast_padded_malloc(), av_fast_padded_mallocz(), av_fft_init(), av_fifo_alloc(), av_fifo_free(), av_frame_copy_props(), av_frame_free(), av_frame_new_side_data(), av_frame_unref(), av_hash_freep(), av_opencl_free_device_list(), av_opencl_free_external_env(), av_opencl_get_device_list(), av_opt_free(), av_opt_freep_ranges(), av_packet_free_side_data(), av_parser_init(), av_probe_input_buffer2(), av_reallocp(), av_samples_alloc_array_and_samples(), av_tempfile(), av_write_trailer(), avcodec_close(), avcodec_copy_context(), avcodec_fill_audio_frame(), avcodec_free_frame(), avcodec_get_frame_defaults(), avcodec_open2(), avfilter_free(), avfilter_graph_alloc(), avfilter_graph_free(), avfilter_graph_parse(), avfilter_graph_parse2(), avfilter_graph_parse_ptr(), avfilter_init_str(), avfilter_inout_free(), avfilter_link_free(), avformat_find_stream_info(), avformat_free_context(), avi_read_close(), avi_read_header(), avi_write_trailer(), avio_close(), avisynth_atexit_handler(), avisynth_load_library(), avisynth_read_packet_audio(), avisynth_read_packet_video(), avresample_close(), avresample_free(), avresample_set_matrix(), avsubtitle_free(), avui_encode_close(), bmv_read_close(), buffer_pool_free(), build_feed_streams(), caca_write_trailer(), cache_open(), caf_write_trailer(), calc_rice_params(), can_merge_formats(), cdxl_decode_end(), che_configure(), clean_tracks(), cleanup(), clear_programs(), cllc_decode_close(), clone_filter_formats(), close_connection(), close_decoder(), close_filter_param(), close_slaves(), compute_mask(), compute_mask_matrix(), concat_close(), concat_open(), concat_read_close(), config_input(), config_output(), config_props(), configure_input_filter(), configure_output_audio_filter(), configure_output_filter(), configure_output_video_filter(), copy_parameter_set(), crypto_close(), data_close(), dca_decode_end(), decimate_uninit(), decode(), decode_close(), decode_end(), decode_init(), decode_picture_header(), decode_slice_header(), decode_str(), decode_update_thread_context(), destroy_buffers(), dfa_decode_end(), dnxhd_encode_end(), do_exit(), doTest(), dvbsub_close_decoder(), dvbsub_parse_close(), dvdsub_close(), dvdsub_decode(), dvdsub_parse(), dvdsub_parse_close(), ebml_free(), ebml_read_binary(), eightsvx_decode_close(), eightsvx_decode_frame(), encode_close(), encode_end(), encode_init(), encode_nals(), encode_picture(), encode_picture_ls(), escape130_decode_close(), escape130_decode_init(), estimate_best_b_count(), exif_decode_tag(), expand_function(), extract_header(), extract_mpeg4_header(), Faac_encode_close(), ff_ac3_encode_close(), ff_ac3_float_mdct_end(), ff_af_queue_close(), ff_alsa_close(), ff_ape_write_tag(), ff_ass_split_free(), ff_audio_data_free(), ff_audio_data_realloc(), ff_audio_mix_alloc(), ff_audio_mix_free(), ff_audio_resample_free(), ff_avc_parse_nal_units_buf(), ff_bgmc_end(), ff_cavs_end(), ff_command_queue_pop(), ff_dither_free(), ff_dwt_destroy(), ff_fft_end(), ff_fft_init(), ff_filter_alloc(), ff_flac_parse_picture(), ff_frame_thread_encoder_free(), ff_free_stream(), ff_free_vlc(), ff_generate_avci_extradata(), ff_graph_thread_free(), ff_graph_thread_init(), ff_h264_free_context(), ff_hevc_decode_nal_pps(), ff_huffyuv_common_end(), ff_id3v2_free_extra_meta(), ff_id3v2_write_apic(), ff_init_vlc_sparse(), ff_interleave_packet_per_dts(), ff_intrax8_common_end(), ff_ivi_init_tiles(), ff_jpeg2000_cleanup(), ff_load_image(), ff_lpc_end(), ff_lzw_decode_close(), ff_mdct_end(), ff_merge_channel_layouts(), ff_merge_formats(), ff_merge_samplerates(), ff_mjpeg_decode_end(), ff_mjpeg_decode_sof(), ff_mms_read_header(), ff_mov_add_hinted_packet(), ff_mov_close_hinting(), ff_mov_init_hinting(), ff_MPV_common_end(), ff_MPV_common_frame_size_change(), ff_MPV_encode_end(), ff_mpv_frame_size_alloc(), ff_mss12_decode_end(), ff_nut_add_sp(), ff_parse_close(), ff_pca_free(), ff_psy_end(), ff_psy_preprocess_end(), ff_rate_control_uninit(), ff_rtmp_packet_destroy(), ff_rtp_finalize_packet(), ff_rtsp_close_streams(), ff_rtsp_setup_input_streams(), ff_schro_queue_pop(), ff_slice_buffer_destroy(), ff_slice_buffer_init(), ff_sndio_close(), ff_sndio_open(), ff_snow_common_end(), ff_snow_common_init_after_header(), ff_srtp_free(), ff_subtitles_queue_clean(), ff_thread_video_encode_frame(), ff_timefilter_destroy(), ff_vaapi_common_end_frame(), ff_vc1_decode_end(), ff_vc1_decode_init_alloc_tables(), ff_vda_create_decoder(), ff_vda_destroy_decoder(), ff_vorbis_comment(), ff_vp56_free_context(), ff_yuv2rgb_c_init_tables(), ffio_rewind_with_probe_data(), ffm_close(), ffmpeg_cleanup(), ffurl_closep(), ffv1_close(), fieldmatch_uninit(), film_read_close(), filter_frame(), find_smallest_bounding_rectangle(), fixup_vorbis_headers(), flac_decode_close(), flac_encode_close(), flac_parse(), flac_parse_close(), flac_read_header(), flac_write_block_comment(), flashsv_decode_end(), flashsv_decode_frame(), flv_read_close(), flv_read_packet(), fourxm_read_close(), fourxm_read_header(), frame_thread_free(), free_acl_list(), free_apic(), free_buffers(), free_bundles(), free_coded_frame(), free_context_frame(), free_device_list(), free_duplicate_context(), free_frame_buffers(), free_geotags(), free_packet_buffer(), free_schro_frame(), free_script(), free_section(), free_segment_list(), free_sequence_buffers(), free_tables(), free_variant_list(), g2m_decode_end(), g722_encode_close(), gen_sub_bitmap(), generate_dither_noise(), get_audio_buffer(), get_buffer_internal(), get_codec_data(), get_cookies(), get_device_list(), get_frame_defaults(), get_http_header_data(), get_tag(), gif_decode_close(), gif_encode_close(), gif_write_trailer(), glyph_enu_free(), guess_dc(), gxf_write_trailer(), h264_mp4toannexb_filter(), handle_connection(), handle_file(), handler(), hevc_close(), hevc_decode_free(), hevc_pps_free(), hls_read_header(), hls_slice_header(), http_close(), http_connect(), http_prepare_data(), http_send_data(), huf_uncompress(), ico_write_trailer(), id3v2_put_ttag(), init(), init_er(), init_pattern_from_file(), initFilter(), ism_free(), ivi_free_buffers(), ivi_init_tiles(), join_config_output(), join_uninit(), jpeg2000_dec_cleanup(), jpg_free_context(), lag_decode_end(), latm_parse_packet(), lavfi_read_close(), libopenjpeg_encode_close(), libopenjpeg_encode_init(), libopus_encode_close(), libopus_encode_init(), libschroedinger_decode_buffer_free(), libschroedinger_decode_close(), libschroedinger_encode_close(), libschroedinger_encode_frame(), libschroedinger_free_frame(), load_glyph(), load_mask(), main(), matroska_clear_queue(), matroska_deliver_packet(), matroska_parse_frame(), matroska_parse_wavpack(), matroska_read_header(), md5_close(), mjpega_dump_header(), mkv_strip_wavpack(), mkv_write_seekhead(), mkv_write_simpletag(), mkv_write_trailer(), mmap_read_frame(), mmsh_close(), mmsh_open_internal(), modplug_read_close(), mov_free(), mov_read_chapters(), mov_read_close(), mov_read_ctts(), mov_read_ftyp(), mov_read_hdlr(), mov_read_stsz(), mov_read_trak(), movie_uninit(), mp3_queue_flush(), mp3lame_encode_close(), mp_decode_end(), mp_decode_init(), mpc7_decode_close(), mpc_read_close(), mpegts_close_filter(), mpegts_write_end(), mpegts_write_header(), mss2_decode_end(), mss3_decode_end(), mss3_decode_init(), mss4_decode_end(), mxf_compute_ptses_fake_index(), mxf_free(), mxf_get_sorted_table_segments(), mxf_interleave_get_packet(), mxf_read_close(), mxf_read_utf16_string(), mxf_write_footer(), mxg_close(), mxpeg_decode_end(), mxpeg_decode_mxm(), new_stream(), nsv_read_close(), nut_read_close(), nut_write_header(), nut_write_trailer(), ogg_new_stream(), ogg_read_close(), ogg_replace_stream(), ogg_restore(), ogg_write_header(), ogg_write_pages(), ogg_write_trailer(), oggvorbis_encode_close(), open_input_file(), opt_map(), packet_queue_flush(), paf_vid_close(), parse_command(), parse_ffconfig(), parse_fmtp_config(), parse_iplconvkernel(), parse_key_value_pair(), parse_keyframes_index(), parse_link_name(), parse_presentation_segment(), parse_primary(), parse_sws_flags(), pcm_dvd_decode_uninit(), pic_arrays_free(), pmp_close(), png_dec_end(), print_sdp(), probe_codec(), probe_file(), process_command(), process_line(), prores_encode_close(), psy_3gpp_end(), pthread_cond_destroy(), put_str16(), qdm2_parse_config(), qt_rtp_free(), qt_rtp_parse_packet(), queue_pop(), r3d_close(), rdt_free_context(), rdt_parse_packet(), CustomSource::read(), read_apic(), read_close(), read_frame(), read_from_packet_buffer(), read_gab2_sub(), read_header(), read_header_gme(), read_kuki_chunk(), read_thread(), read_ttag(), realloc_buffer(), remove_decoded_packets(), resample_free(), resample_init(), reset_buffers(), reset_rects(), roq_dpcm_encode_close(), rtmp_calc_swfhash(), rtmp_close(), rtmp_http_close(), rtmp_open(), rtp_close(), rtp_write_trailer(), rtsp_read_close(), rv34_decoder_free(), sample_queue_free(), sap_read_close(), sap_write_close(), sap_write_header(), sbg_read_header(), sdl_write_trailer(), sdp_parse_fmtp_config_h264(), seg_write_trailer(), segment_end(), set_expr(), set_string(), set_string_binary(), shorten_decode_close(), show_help(), slice_thread_uninit(), smacker_read_close(), smacker_read_header(), smjpeg_read_header(), smvjpeg_decode_end(), sox_read_header(), spdif_write_trailer(), split_uninit(), Stagefright_close(), Stagefright_decode_frame(), Stagefright_init(), stop_jack(), stream_component_close(), sunrast_decode_frame(), svq1_encode_end(), svq3_decode_end(), svq3_decode_init(), svq3_parse_packet(), swf_read_packet(), swr_free(), swri_realloc_audio(), swri_rematrix_free(), sws_allocVec(), sws_freeContext(), sws_freeVec(), tak_decode_close(), tak_read_header(), tee_write_header(), tgv_decode_end(), tgv_decode_frame(), thread_free(), tiff_decode_tag(), tiff_end(), transcode(), truemotion1_decode_end(), tscc2_decode_end(), tta_decode_close(), tta_encode_close(), udp_open(), uninit(), uninit_options(), uninit_parse_context(), url_alloc_for_protocol(), utvideo_decode_close(), utvideo_encode_close(), v308_encode_close(), v408_encode_close(), v410_encode_close(), vble_decode_close(), vdpau_h264_end_frame(), vfw_read_header(), vid_read_close(), vid_read_packet(), video_encode_example(), vmd_read_close(), vmd_read_header(), vmdvideo_decode_end(), vorbis_cleanup(), vorbis_encode_close(), vorbis_free(), vorbis_header(), vp3_decode_end(), vp8_free(), vp9_decode_free(), vqa_decode_end(), vqa_decode_init(), wavpack_decode_end(), wavpack_encode_close(), worker(), write_chapter(), write_headers(), write_option(), writer_close(), wtvfile_close(), x11grab_read_header(), X264_close(), xan_decode_end(), xan_decode_init(), XAVS_close(), xface_encode_close(), xiph_handle_packet(), xmv_read_close(), xvid_encode_close(), y41p_encode_close(), yae_release_buffers(), and yuv4_encode_close().

void av_dynarray_add ( voidtab_ptr,
int *  nb_ptr,
voidelem 
)

Add an element to a dynamic array.

The array to grow is supposed to be an array of pointers to structures, and the element to add must be a pointer to an already allocated structure.

The array is reallocated when its size reaches powers of 2. Therefore, the amortized cost of adding an element is constant.

In case of success, the pointer to the array is updated in order to point to the new grown array, and the number pointed to by nb_ptr is incremented. In case of failure, the array is freed, *tab_ptr is set to NULL and *nb_ptr is set to 0.

Parameters
tab_ptr pointer to the array to grow
nb_ptr pointer to the number of elements in the array
elem element to add
See Also
av_dynarray2_add()

Definition at line 279 of file mem.c.

void* av_dynarray2_add ( void **  tab_ptr,
int *  nb_ptr,
size_t  elem_size,
const uint8_telem_data 
)

Add an element of size elem_size to a dynamic array.

The array is reallocated when its number of elements reaches powers of 2. Therefore, the amortized cost of adding an element is constant.

In case of success, the pointer to the array is updated in order to point to the new grown array, and the number pointed to by nb_ptr is incremented. In case of failure, the array is freed, *tab_ptr is set to NULL and *nb_ptr is set to 0.

Parameters
tab_ptr pointer to the array to grow
nb_ptr pointer to the number of elements in the array
elem_size size in bytes of the elements in the array
elem_data pointer to the data of the element to add. If NULL, the space of the new added element is not filled.
Returns
pointer to the data of the element to copy in the new allocated space. If NULL, the new allocated space is left uninitialized."
See Also
av_dynarray_add()

Definition at line 309 of file mem.c.

Referenced by init().

static int av_size_mult ( size_t  a,
size_t  b,
size_t *  r 
)
inlinestatic

Multiply two size_t values checking for overflow.

Returns
0 if success, AVERROR(EINVAL) if overflow.

Definition at line 311 of file mem.h.

Referenced by av_realloc_f(), config_output(), decode_frame(), and ogg_new_stream().

void av_max_alloc ( size_t  max )

Set the maximum size that may me allocated in one block.

Definition at line 69 of file mem.c.

Referenced by opt_max_alloc().

void av_memcpy_backptr ( uint8_tdst,
int  back,
int  cnt 
)

deliberately overlapping memcpy implementation

Parameters
dst destination buffer
back how many bytes back we start (the initial size of the overlapping window), must be > 0
cnt number of bytes to copy, must be >= 0

cnt > back is valid, this will copy the bytes we just copied, thus creating a repeating pattern with a period length of back.

Definition at line 416 of file mem.c.

Referenced by copy_backptr(), decode_dsw1(), decode_frame(), decode_tsw1(), mszh_decomp(), residual_interp(), synth_block_fcb_acb(), unpack(), and xan_unpack().

Variable Documentation

size_t size
Initial value:
{
if (!size || nmemb >= INT_MAX / size)
return NULL

Definition at line 94 of file mem.h.

size_t nmemb

Definition at line 166 of file mem.h.

size_t size
Initial value:
{
if (!size || nmemb >= INT_MAX / size)
return NULL

Definition at line 11134 of file twinvq_data.h.

Referenced by aac_parse_packet(), aac_sync(), abs_pow34_v(), adaptive_gain_control(), add_fragment(), add_metadata_from_side_data(), adp_read_packet(), adpcm_swf_decode(), adx_read_packet(), afc_read_packet(), aiff_read_header(), aiff_read_packet(), alloc_table(), amf_skip_tag(), amf_tag_contents(), amr_read_packet(), amr_wb_encode_frame(), ape_tag_read_field(), append(), append_packet_chunked(), apply_param_change(), apply_tns(), asf_read_ext_stream_properties(), asf_read_frame_header(), ast_read_packet(), ast_write_packet(), audio_write_packet(), av_audio_fifo_drain(), av_audio_fifo_read(), av_audio_fifo_write(), av_bprint_init_for_buffer(), av_buffer_create(), av_buffer_pool_init(), av_buffer_realloc(), av_fifo_alloc(), av_fifo_drain(), av_fifo_generic_write(), av_frame_new_side_data(), av_image_copy_to_buffer(), av_image_fill_pointers(), av_new_packet(), av_packet_copy_props(), av_packet_from_data(), av_packet_merge_side_data(), av_packet_new_side_data(), av_packet_shrink_side_data(), av_packet_split_side_data(), av_parser_change(), av_realloc_f(), av_samples_alloc(), av_shrink_packet(), avi_load_index(), avi_read_header(), avi_read_nikon(), avi_read_packet(), avi_read_tag(), avi_sync(), avi_write_packet(), avio_close_dyn_buf(), avio_read(), avio_size(), avpriv_aac_parse_header(), avpriv_dv_get_packet(), avpriv_dv_produce_packet(), avs_new_value_array(), avs_read_audio_packet(), avs_read_packet(), avui_encode_frame(), block_sse(), bytestream2_get_bufferu(), bytestream2_put_bufferu(), bytestream2_set_bufferu(), bytestream2_skipu(), bytestream_get_buffer(), bytestream_put_buffer(), calc_deflate_block_size(), check(), check_bidir_mv(), check_checksum(), cinepak_decode_codebook(), cinepak_decode_strip(), cinepak_decode_vectors(), clean_index(), cmp_inline(), cmv_decode_frame(), codebook_trellis_rate(), commit_bitstream_and_slice_buffer(), compute_avg_bitrate(), concat_open(), concat_seek(), config_output(), construct_perm_table(), copy_tag(), crypto_read(), data_read(), daud_packet(), dca_subsubframe(), dca_xbr_parse_frame(), dec_lpc_spectrum_inv(), decode_audio(), decode_copy(), decode_deep_rle32(), decode_frame(), decode_frame_header(), decode_scaling_list(), decode_subframe(), decode_unregistered_user_data(), decode_video(), deinvert_buffer(), dshow_cycle_formats(), dump_extradata(), dv1394_read_packet(), dv_encode_ac(), dv_extract_audio(), dv_extract_video_info(), dv_frame_offset(), dv_inject_audio(), dv_read_packet(), dv_vlc_map_tableinit(), dv_work_pool_size(), dxa_read_header(), dxa_read_packet(), dxva2_h264_decode_slice(), dxva2_mpeg2_decode_slice(), dxva2_vc1_decode_slice(), encode_block(), encode_frame(), encode_init(), encode_nals(), encode_picture_ls(), encode_window_bands_info(), epzs_motion_search2(), epzs_motion_search4(), epzs_motion_search_internal(), escape_FF(), eval_lpcenv_or_interp(), event_loop(), extend_af(), extract_mpeg4_header(), ff_adaptive_gain_control(), ff_add_index_entry(), ff_add_param_change(), ff_alloc_extradata(), ff_alloc_packet2(), ff_alsa_extend_reorder_buf(), ff_amf_get_field_value(), ff_amf_tag_size(), ff_ape_write_tag(), ff_ass_split_override_codes(), ff_avc_parse_nal_units(), ff_dxva2_commit_buffer(), ff_er_frame_end(), ff_generate_avci_extradata(), ff_h264_decode_extradata(), ff_h264_decode_sei(), ff_huff_gen_len_table(), ff_isom_write_avcc(), ff_mjpeg_decode_sof(), ff_mov_add_hinted_packet(), ff_mov_read_stsd_entries(), ff_mov_write_packet(), ff_mpeg4_init_partitions(), ff_pcm_read_packet(), ff_raw_read_partial_packet(), ff_read_riff_info(), ff_rm_read_mdpr_codecdata(), ff_rtmp_packet_create(), ff_rtmp_packet_write(), ff_rtp_send_aac(), ff_rtp_send_amr(), ff_rtp_send_h264(), ff_rtp_send_jpeg(), ff_rtp_send_mpegvideo(), ff_rtp_send_xiph(), ff_rv34_decode_frame(), ff_set_min_dist_lsf(), ff_vaapi_alloc_slice(), ff_vdpau_add_buffer(), ff_vf_mpi_clear(), ff_voc_get_packet(), ff_vorbis_comment(), ffio_close_null_buf(), ffio_limit(), ffio_read_indirect(), ffio_read_partial(), ffm2_read_header(), ffm_read_data(), ffm_read_packet(), ffm_write_data(), ffurl_size(), fill_random(), fill_rectangle(), fill_slice(), fill_slice_long(), fill_slice_short(), find_best_tables(), find_frame_end(), find_headers_search(), find_headers_search_validate(), find_new_headers(), flashsv2_prime(), flashsv_decode_frame(), flush_encoders(), flush_packet(), flv_queue_extradata(), flv_read_packet(), flv_write_packet(), fourxm_read_header(), fourxm_read_packet(), full_search(), funny_diamond_search(), g723_1_read_packet(), get_codec_data(), get_mb_score(), get_packetheader(), get_private_data(), get_size_of_code(), get_tag(), gif_image_write_image(), gsm_read_packet(), guess_ni_flag(), gxf_write_mpeg_auxiliary(), h263_mv4_search(), h264_find_start_code_candidate_c(), handle_metadata(), hex_dump_internal(), hex_search(), hpel_motion_search(), http_buf_read(), http_send_data(), http_write(), iec61883_parse_queue_dv(), iec61883_parse_queue_hdv(), iec61883_read_packet(), imdct_and_window(), img_read_packet(), infer_size(), ingenient_read_packet(), init_h263_dc_for_msmpeg4(), init_uni_dc_tab(), interlaced_search(), interleave_new_audio_packet(), interpolate(), intra_pred(), ism_flush(), jp2_find_codestream(), jpeg_put_comments(), jpeg_table_header(), kalman_smoothen(), klv_decode_ber_length(), klv_encode_ber_length(), l2s_dia_search(), lavfi_read_packet(), linear_perm(), lpc_weighting(), lvf_read_header(), lvf_read_packet(), main(), matroska_parse_laces(), matroska_parse_wavpack(), matroska_probe(), md5_write(), memcpy_rgb332_to_bgr8(), merge(), mkv_blockgroup_size(), mkv_strip_wavpack(), mkv_write_block(), mkv_write_vtt_blocks(), mmf_read_header(), mmf_read_packet(), mms_put_utf16(), mov_build_index(), mov_create_chapter_track(), mov_read_dref(), mov_read_extradata(), mov_read_glbl(), mov_write_dvc1_structs(), mov_write_edts_tag(), mov_write_int8_metadata(), mov_write_isml_manifest(), mov_write_meta_tag(), mov_write_single_packet(), mov_write_string_data_tag(), mov_write_string_tag(), mov_write_tfrf_tag(), mov_write_tmpo_tag(), mov_write_traf_tag(), mov_write_trailer(), mov_write_trkn_tag(), mov_write_udta_tag(), mp3_parse_vbr_tags(), mp3_read_packet(), mp_get_code(), mpc8_handle_chunk(), mpc8_parse_seektable(), mpc8_probe(), mpc8_read_header(), mpc8_read_packet(), mpc_read_packet(), mpeg4_encode_dc(), mpeg_mux_write_packet(), mpegps_read_pes_header(), mpegts_probe(), mpegts_write_packet_internal(), msnwc_tcp_read_packet(), mxf_compute_sample_count(), mxf_decrypt_triplet(), mxf_read_generic_descriptor(), mxf_read_local_tags(), mxf_read_packet(), mxf_read_partition_pack(), mxf_read_sync(), mxf_write_local_tag_utf16(), mxg_read_packet(), nc_probe(), nc_read_packet(), nsv_parse_NSVf_header(), nuv_packet(), nuv_read_dts(), ogg_get_length(), ogg_new_buf(), ogg_new_stream(), ogg_read_page(), ogg_write_page(), ogg_write_vorbiscomment(), ogm_header(), old_flac_header(), output_immediate(), parse_3dl(), parse_adts_frame_header(), parse_chunks(), parse_cube(), parse_dat(), parse_forced_key_frames(), parse_m3d(), parse_packet(), parse_psfile(), piz_uncompress(), pmp_header(), png_choose_filter(), png_filter_row(), png_write_row(), poll_frame(), postfilter(), pred_angular(), pred_dc(), predictor(), process_block(), process_ea_header(), propagate_block_data(), put_id3v2_tags(), put_meta(), put_pcm(), put_qcd(), put_system_header(), qcp_read_header(), qdm2_decode_init(), qpel_motion_search(), quantize_and_encode_band_cost_template(), quantize_bands(), queue_frames(), r3d_read_reda(), rac_init(), radix_count(), radix_sort_pass(), raw_read_packet(), rdt_load_mdpr(), read_arbitrary(), read_header(), read_index(), read_packet(), read_shape_from_file(), read_table(), read_tfra(), read_tree(), read_whole_file(), redspark_read_packet(), reorder_pixels(), resample(), rl2_rle_decode(), rm_read_index(), rm_write_audio(), roq_encode_frame(), rsd_read_packet(), rso_read_header(), rtmp_http_write(), rtmp_packet_read_one_chunk(), rtmp_read(), rtmp_write(), rtmpe_write(), rtp_send_mpegaudio(), rtp_send_mpegts_raw(), rtp_send_raw(), rtp_send_samples(), rtp_write(), rtp_write_packet(), run_implementation(), rv10_decode_frame(), rv10_write_header(), rv34_gen_vlc(), sab_diamond_search(), sample_queue_push(), search_for_quantizers_faac(), set_identity_matrix(), set_put_bits_buffer_size(), setup_partitions(), shift_output(), show_format(), siff_read_packet(), smacker_read_packet(), small_diamond_search(), smjpeg_read_packet(), smush_read_header(), smush_read_packet(), spdif_header_dts(), squared_diff_macroblock(), srt_decode_frame(), srt_write_packet(), srtp_write(), ssd_int8_vs_int16_altivec(), ssd_int8_vs_int16_c(), ssd_plane(), svq3_decode_init(), swr_convert(), synth_block_fcb_acb(), synth_block_hardcoded(), tak_read_header(), tcp_write_packet(), thp_read_packet(), tiff_unpack_fax(), transcode_subtitles(), tscc2_decode_frame(), tta_read_header(), tta_read_packet(), udp_read(), umh_search(), unpack(), unpack_codebook(), update_frame_pool(), update_offset(), update_sample_display(), updatePacketSize(), var_diamond_search(), vb_decode_palette(), vc1_decode_frame(), vc1_decode_init(), vc1_extract_headers(), vc1_unescape_buffer(), very_broken_op(), vmd_read_header(), vp6_build_huff_tree(), vp9_decode_frame(), vp9_decode_packet(), vqf_read_header(), vqf_read_packet(), w_c(), wavpack_decode_block(), wc3_read_header(), wc3_read_packet(), webp_decode_frame(), wmavoice_decode_packet(), write_root_table(), ws_snd_decode_frame(), wv_mono(), wv_read_block_header(), wv_stereo(), xan_decode_frame(), xan_unpack(), xan_wc3_decode_frame(), XAVS_init(), xbm_encode_frame(), xwma_read_header(), and xwma_read_packet().


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