Memory Management

Files

file  dict.h
 Public dictionary API.
 

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

voidav_malloc (size_t size) av_malloc_attrib 1(1)
 Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if available on the CPU). More...
 
static voidav_malloc_array (size_t nmemb, size_t size)
 
voidav_realloc (void *ptr, size_t size) 1(2)
 Allocate or reallocate a block of memory. More...
 
void av_free (void *ptr)
 Free a memory block which has been allocated with av_malloc(z)() or av_realloc(). More...
 
voidav_mallocz (size_t size) av_malloc_attrib 1(1)
 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. More...
 
static voidav_mallocz_array (size_t nmemb, size_t size)
 
char * av_strdup (const char *s) av_malloc_attrib
 Duplicate the string s. More...
 
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. More...
 
void av_memcpy_backptr (uint8_t *dst, int back, int cnt)
 deliberately overlapping memcpy implementation More...
 

Detailed Description

Macro Definition Documentation

#define av_alloc_size (   ...)

Definition at line 71 of file mem.h.

#define av_malloc_attrib

Definition at line 65 of file mem.h.

#define DECLARE_ALIGNED (   n,
  t,
 
)    t v

Definition at line 58 of file mem.h.

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

Definition at line 59 of file mem.h.

Function Documentation

void av_free ( void ptr)

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

Parameters
ptrPointer 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 139 of file mem.c.

Referenced by a64multi_close_encoder(), aac_decode_frame(), add_pes_stream(), adpcm_encode_frame(), alloc_picture(), amr_free_context(), ape_tag_read_field(), append_entry(), asf_write_trailer(), 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_destruct_packet(), av_dict_free(), av_dict_set(), av_dump_format(), av_expr_parse(), av_fast_malloc(), av_fft_end(), av_fifo_free(), av_fifo_realloc2(), av_file_unmap(), av_freep(), av_image_alloc(), av_opt_set_bin(), av_parser_close(), av_parser_init(), av_probe_input_buffer(), av_samples_alloc(), av_tree_destroy(), avcodec_alloc_context3(), avcodec_fill_audio_frame(), avfilter_free(), avfilter_get_video_buffer_ref_from_arrays(), avfilter_open(), avfilter_ref_buffer(), avfilter_unref_buffer(), avformat_free_context(), avformat_new_stream(), avi_read_close(), avi_write_trailer(), avio_close(), avio_close_dyn_buf(), avisynth_read_close(), avpicture_free(), avpriv_dv_init_demux(), bfi_decode_close(), build_filter(), cdxl_decode_end(), celt_header(), channelmap_filter_frame(), check_stream_max_drift(), cinvideo_decode_end(), close(), close_audio(), close_connection(), close_null_ctx(), close_video(), cmdutils_read_file(), cng_decode_close(), cng_encode_close(), codec_get_buffer(), concat_open(), cond_release_buffer(), cook_decode_close(), decode_end(), decode_frame(), decode_video(), deinterlace_bottom_field_inplace(), delete_region_display_list(), delete_state(), dilate_init(), dirac_parse_close(), dnxhd_encode_end(), do_adobe_auth(), do_llnw_auth(), doTest(), dv1394_close(), dv_read_close(), dvbsub_close_decoder(), dvbsub_parse_page_segment(), dvbsub_parse_region_segment(), ebml_free(), ebml_read_ascii(), ebml_read_binary(), encode_close(), encode_end(), encode_frame(), encode_picture_ls(), enu_free(), escape124_decode_close(), escape124_decode_frame(), exit_program(), ff_asf_parse_packet(), 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_avfilter_default_free_buffer(), ff_cavs_end(), ff_ccitt_unpack(), ff_dct_end(), ff_dct_init(), ff_default_get_video_buffer(), ff_dither_free(), ff_do_elbg(), ff_free_parser_state(), ff_gen_syncpoint_search(), ff_h264_decode_picture_parameter_set(), ff_h264_decode_seq_parameter_set(), ff_http_auth_create_response(), ff_id3v2_parse(), 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_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_parse_open(), ff_rtp_reset_packet_queue(), ff_rtp_send_punch_packets(), ff_rtsp_close_streams(), ff_rtsp_setup_output_streams(), ff_rtsp_undo_setup(), ff_slice_buffer_init(), ff_snow_alloc_blocks(), ff_snow_release_buffer(), ff_store_parser_state(), ff_tls_deinit(), ff_wma_end(), ff_wms_parse_sdp_a_line(), ff_yuv2rgb_c_init_tables(), ffio_fdopen(), ffio_rewind_with_probe_data(), ffio_set_buf_size(), ffurl_close(), film_read_packet(), filter_release_buffer(), find_and_decode_index(), flac_parse(), flac_parse_close(), flashsv_decode_end(), flashsv_encode_end(), flic_read_header(), flv_get_extradata(), flv_queue_extradata(), flv_write_packet(), fourxm_read_header(), frame_list_clear(), frame_list_remove_samples(), free_buffer_pool(), free_context(), free_entries(), free_filter_param(), free_fragment_if_needed(), free_frame_if_needed(), free_geobtag(), free_packet_list(), free_segment_list(), free_tracked_methods(), free_variant_list(), frei0r_init(), generate_codebook(), generate_new_codebooks(), get_metadata(), get_private_data(), get_tag(), gif_write_header(), glyph_enu_free(), h263_free_context(), h263_handle_packet(), h264_free_context(), h264_mp4toannexb_filter(), handle_invoke_error(), handle_invoke_result(), hls_write_header(), hls_write_trailer(), http_parse_request(), http_receive_data(), init_coef_vlc(), init_cook_mlt(), init_pass2(), initFilter(), ism_flush(), ism_free(), jpeg_free_context(), latm_decode_audio_specific_config(), latm_free_context(), latm_parse_packet(), latm_write_packet(), libschroedinger_decode_frame(), libschroedinger_free_frame(), link_filter_inouts(), m4sl_cb(), main(), make_digest_auth(), matroska_clear_queue(), matroska_decode_buffer(), matroska_deliver_packet(), matroska_fix_ass_packet(), matroska_merge_packets(), matroska_parse_block(), matroska_parse_frame(), matroska_read_close(), matroska_read_header(), mimic_decode_end(), mjpeg_decode_com(), mkv_flush_dynbuf(), mkv_write_block(), mkv_write_codecprivate(), mkv_write_seekhead(), mkv_write_trailer(), mmap_close(), mmap_init(), mmap_release_buffer(), mms_close(), mmsh_close(), mov_flush_fragment(), mov_read_cmov(), mov_read_dref(), mov_read_dvc1(), mov_read_glbl(), mov_read_packet(), mov_read_smi(), mov_read_strf(), mov_read_stsz(), mov_read_stts(), mov_read_wave(), mov_write_ctts_tag(), mov_write_dvc1_structs(), mov_write_isml_manifest(), mov_write_stts_tag(), mov_write_trailer(), mov_write_udta_tag(), mpc8_parse_seektable(), mpeg_mux_init(), mpegts_close_filter(), 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(), new_connection(), new_output_stream(), nsv_parse_NSVf_header(), nsv_read_close(), ogg_new_buf(), ogg_read_close(), ogg_read_page(), ogg_restore(), ogg_write_page(), ogg_write_trailer(), ogm_chapter(), open_null_ctx(), opt_channel_layout(), opt_vstats_file(), packet_queue_get(), parse_filter(), parse_fmtp_config(), parse_inputs(), parse_key_value_pair(), parse_outputs(), parse_setup_header(), pcx_decode_frame(), pmt_cb(), pre_process_video_frame(), prepare_sdp_description(), put_packet(), qcelp_free_context(), qdm2_extradata_free(), qt_rtp_free(), qt_rtp_parse_packet(), qtrle_encode_end(), radix_sort(), rdt_free_context(), rdt_new_context(), read_close(), read_frame(), read_geobtag(), read_shape_from_file(), read_tag(), rl2_decode_end(), rl2_read_header(), rm_write_audio(), roq_encode_end(), roq_encode_video(), rtmp_open(), rtp_new_av_stream(), rtp_new_connection(), rtp_parse_mp4_au(), rtp_parse_queued_packet(), rtsp_cmd_describe(), sample_queue_free(), sample_queue_pop(), sap_write_header(), sdp_parse_fmtp_config_h264(), sdt_cb(), seq_read_close(), set_params(), set_string_binary(), smacker_decode_header_tree(), smacker_read_close(), smacker_read_header(), smka_decode_frame(), sp5x_decode_frame(), stream_close(), stream_open(), svq1_decode_frame(), svq3_decode_init(), svq3_extradata_free(), svq3_parse_packet(), sws_addVec(), sws_convVec(), sws_freeContext(), sws_freeFilter(), sws_freeVec(), sws_shiftVec(), sws_subVec(), tcp_write_packet(), tgv_decode_end(), thread_free(), thread_init(), tiff_unpack_strip(), tm2_build_huff_table(), tm2_free_codes(), tqi_decode_end(), transcode(), truemotion1_decode_end(), tta_decode_close(), twin_decode_close(), udp_open(), uninit(), update_context_from_user(), url_open_dyn_buf_internal(), vc1_decode_frame(), vc1_decode_init(), vc1_extract_headers(), vfw_read_close(), vfw_read_header(), vfw_read_packet(), video_audio_display(), video_decode_example(), video_encode_example(), videostream_cb(), vmd_read_close(), vmd_read_header(), vmdvideo_decode_end(), vorbis_free(), vorbis_parse_setup_hdr_codebooks(), vp56_size_changed(), vp8_free_buffer(), vp8_free_context(), vp8_release_frame(), write_globalinfo(), write_headers(), write_streaminfo(), wtvfile_close(), wtvfile_open_sector(), x11grab_read_header(), X264_close(), XAVS_close(), xiph_free_context(), xiph_parse_fmtp_pair(), xmv_process_packet_header(), xmv_read_close(), xvid_encode_close(), and xwma_read_header().

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.

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

Definition at line 151 of file mem.c.

Referenced by aac_decode_close(), aac_encode_close(), aac_encode_end(), adpcm_encode_close(), adpcm_encode_init(), adx_read_header(), alac_decode_close(), alac_encode_close(), alloc_buffer(), alloc_frame_buffer(), alloc_scratch_buffers(), amr_wb_encode_close(), ape_decode_close(), ape_read_close(), ape_tag_read_field(), asf_read_picture(), asf_read_stream_properties(), asf_write_header1(), asfrtp_free_context(), asfrtp_parse_packet(), atrac3_decode_init(), audio_encode_example(), audio_free_buffers(), audio_get_buffer(), av_bitstream_filter_close(), av_destruct_packet(), av_dict_free(), av_dict_set(), av_expr_free(), av_fast_padded_malloc(), av_fft_init(), av_fifo_alloc(), av_opt_free(), av_write_trailer(), avcodec_close(), avcodec_copy_context(), avcodec_encode_audio2(), avcodec_free_frame(), avcodec_get_frame_defaults(), avcodec_open2(), avfilter_free(), avfilter_get_audio_buffer_ref_from_arrays(), avfilter_graph_free(), avfilter_graph_parse(), avfilter_graph_parse2(), avfilter_inout_free(), avfilter_open(), avfilter_ref_buffer(), avfilter_unref_buffer(), avformat_find_stream_info(), avformat_free_context(), avi_read_close(), avi_read_header(), avi_write_trailer(), avio_close(), avresample_close(), avresample_free(), avresample_set_matrix(), avsubtitle_free(), bmv_read_close(), build_feed_streams(), calc_rice_params(), che_configure(), clean_files(), clear_programs(), cllc_decode_close(), close_connection(), close_decoder(), codec_get_buffer(), color_uninit(), concat_close(), concat_open(), cond_release_buffer(), config_input(), configure_input_filter(), configure_output_audio_filter(), configure_output_filter(), configure_output_video_filter(), copy_parameter_set(), crypto_close(), dca_decode_end(), decode_close(), decode_dvd_subtitles(), decode_end(), decode_frame(), decode_init(), decode_picture_header(), decode_slice_header(), decode_str(), decode_thread(), decode_update_thread_context(), delete_next_frame(), delete_state(), dfa_decode_end(), dnxhd_encode_end(), doTest(), dtext_prepare_text(), dvbsub_parse_close(), dvdsub_parse(), dvdsub_parse_close(), ebml_free(), ebml_read_binary(), eightsvx_decode_close(), eightsvx_decode_frame(), encode_close(), encode_end(), encode_init(), estimate_best_b_count(), exit_program(), extract_mpeg4_header(), Faac_encode_close(), ff_ac3_encode_close(), ff_ac3_float_mdct_end(), ff_alsa_close(), 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_avfilter_default_free_buffer(), ff_bgmc_end(), ff_cavs_end(), ff_default_get_audio_buffer(), ff_dither_free(), ff_fft_end(), ff_fft_init(), ff_free_vlc(), ff_h264_free_context(), 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_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_psy_end(), ff_psy_preprocess_end(), ff_rate_control_uninit(), ff_read_packet(), ff_rtmp_packet_destroy(), ff_rtsp_setup_input_streams(), ff_schro_queue_pop(), ff_slice_buffer_destroy(), ff_sndio_close(), ff_sndio_open(), ff_snow_common_end(), ff_snow_common_init_after_header(), 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(), ffm_close(), ffv1_close(), film_read_close(), 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(), flv_read_close(), flv_read_packet(), fourxm_read_close(), fourxm_read_header(), frame_thread_free(), free_acl_list(), free_apic(), free_buffer_pool(), free_buffers(), free_bundles(), free_coded_frame(), free_context_frame(), free_duplicate_context(), free_frame_buffer(), free_frame_buffers(), free_packet_buffer(), free_picture(), free_schro_frame(), free_segment_list(), free_tables(), free_variant_list(), g722_encode_close(), generate_dither_noise(), get_codec_data(), get_http_header_data(), get_tag(), get_tcp_server_response(), gif_encode_close(), gxf_write_trailer(), h264_decode_end(), h264_mp4toannexb_filter(), handle_connection(), handle_file(), handle_packets(), http_connect(), http_prepare_data(), http_send_data(), id3v2_put_ttag(), ilbc_encode_close(), init_er(), initFilter(), ism_free(), ivi_free_buffers(), ivi_init_tiles(), join_config_output(), join_free_buffer(), join_request_frame(), join_uninit(), lag_decode_end(), latm_parse_packet(), libgsm_encode_close(), libopenjpeg_create_image(), 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(), main(), matroska_clear_queue(), matroska_deliver_packet(), md5_close(), mjpega_dump_header(), mkv_write_simpletag(), mkv_write_trailer(), mmsh_open(), mov_read_chapters(), mov_read_close(), mov_read_ftyp(), mov_read_stss(), mov_read_stsz(), mov_read_trak(), mov_write_header(), mov_write_trailer(), mp3_queue_flush(), mp3lame_encode_close(), mp_decode_end(), MPA_encode_close(), 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_index_entry_array(), 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_read_page(), ogg_write_header(), ogg_write_pages(), ogg_write_trailer(), oggvorbis_encode_close(), old_print_object_footer(), old_print_object_header(), open_input_file(), opt_map(), packet_queue_flush(), pad_last_frame(), parse_ffconfig(), parse_fmtp_config(), parse_iplconvkernel(), parse_keyframes_index(), parse_link_name(), parse_picture(), parse_primary(), parse_sws_flags(), pcm_encode_close(), pmp_close(), print_sdp(), probe_codec(), psy_3gpp_end(), pthread_cond_destroy(), put_str16(), qdm2_parse_config(), qt_rtp_free(), qt_rtp_parse_packet(), queue_pop(), r3d_close(), ra144_encode_close(), raw_close_decoder(), rdt_free_context(), rdt_parse_packet(), read_apic(), read_close(), read_frame(), read_from_packet_buffer(), read_gab2_sub(), read_header(), read_kuki_chunk(), read_ttag(), realloc_buffer(), release_queued_segmaps(), remove_decoded_packets(), reset_buffers(), roq_dpcm_encode_close(), rtmp_calc_swfhash(), rtmp_close(), rtmp_http_close(), rtmp_open(), rtp_write_trailer(), rtsp_read_close(), rv34_decoder_free(), sample_queue_free(), sap_read_close(), sap_write_close(), sap_write_header(), sdp_parse_fmtp_config_h264(), set_string(), set_string_binary(), shorten_decode_close(), show_help(), smjpeg_read_header(), sox_read_header(), spdif_write_trailer(), split_uninit(), stop_jack(), stream_component_close(), svq1_decode_end(), svq1_encode_end(), svq3_decode_init(), svq3_parse_packet(), sws_allocVec(), sws_freeContext(), sws_freeVec(), tak_decode_close(), tak_read_header(), tgv_decode_frame(), thread_free(), transcode(), tscc2_decode_end(), tta_decode_close(), tta_decode_init(), uninit(), uninit_options(), uninit_parse_context(), utvideo_encode_close(), v410_decode_close(), v410_encode_close(), vble_decode_close(), vid_read_close(), vid_read_packet(), video_encode_example(), video_free_buffers(), video_get_buffer(), video_thread(), vorbis_cleanup(), vorbis_encode_close(), vorbis_free(), vorbis_header(), vp3_decode_end(), vp8_free(), vqa_decode_end(), vqa_decode_init(), wavpack_decode_end(), write_chapter(), write_headers(), write_option(), X264_close(), xan_decode_end(), xan_decode_init(), XAVS_close(), xbm_encode_close(), xiph_handle_packet(), xvid_encode_close(), xwd_decode_close(), xwd_encode_close(), and zerocodec_decode_close().

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
sizeSize 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 61 of file mem.c.

Referenced by a64multi_init_encoder(), add_av_stream1(), add_metadata(), adpcm_encode_init(), alloc_picture(), alloc_scratch_buffers(), allocate_frame_buffers(), allocate_tables(), apc_read_header(), ape_read_header(), ape_tag_read_field(), append_entry(), asf_read_picture(), asf_write_header(), ass_decode_init(), ass_encode_init(), audio_encode_example(), av_audio_convert_alloc(), av_d2str(), av_expr_parse(), av_fast_malloc(), av_fft_init(), av_fifo_alloc(), av_file_map(), av_get_token(), av_image_alloc(), av_malloc_array(), av_mallocz(), av_new_packet(), av_opt_get(), av_opt_set_bin(), av_packet_new_side_data(), av_parser_change(), av_realloc(), av_samples_alloc(), av_strdup(), avcodec_alloc_context3(), avfilter_open(), avfilter_ref_buffer(), avformat_alloc_context(), avformat_find_stream_info(), avi_read_header(), avi_read_tag(), avi_write_packet(), avresample_set_matrix(), bfi_read_header(), build_filter(), calc_rice_params(), celt_header(), cmdutils_read_file(), cng_encode_init(), concat_open(), config_input(), config_output(), config_props(), copy_parameter_set(), create_cel_evals(), create_map(), create_vorbis_context(), decode_dvd_subtitles(), decode_frame(), decode_header_trees(), decode_init(), decode_main_header(), decode_picture_header(), decode_rle(), deinterlace_bottom_field_inplace(), denoise_depth(), dnxhd_encode_init(), do_subtitle_out(), dump_extradata(), dvbsub_display_end_segment(), dvbsub_parse_clut_segment(), dvbsub_parse_init(), dvbsub_parse_region_segment(), dvdsub_parse(), ebml_read_ascii(), ebml_read_binary(), eightsvx_decode_frame(), encode_frame(), encode_init(), encode_picture_ls(), estimate_best_b_count(), extract_mpeg4_header(), Faac_encode_init(), ff_ac3_float_mdct_init(), ff_af_queue_add(), ff_alsa_open(), ff_asf_parse_packet(), ff_ass_add_rect(), ff_audio_data_realloc(), ff_bgmc_init(), ff_ccitt_unpack(), ff_dct_init(), ff_do_elbg(), ff_fft_init(), ff_fill_line_with_color(), ff_gen_syncpoint_search(), ff_http_auth_create_response(), ff_huffyuv_alloc_temp(), ff_init_elbg(), ff_init_rl(), ff_init_vlc_sparse(), ff_make_format_list(), ff_mdct_init(), ff_mjpeg_decode_sof(), ff_mjpeg_encode_init(), ff_mov_write_packet(), ff_MPV_common_frame_size_change(), ff_MPV_common_init(), ff_mss12_decode_init(), ff_parse_fmtp(), ff_parse_mpeg2_descriptor(), 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_tempfile(), ff_tls_init(), ff_urldecode(), ff_vc1_decode_init_alloc_tables(), ff_vda_create_decoder(), ff_vorbis_comment(), ff_yuv2rgb_c_init_tables(), ffio_fdopen(), ffio_set_buf_size(), ffm_read_header(), fft_ref_init(), ffurl_get_multi_file_handle(), ffv1_allocate_initial_states(), ffv1_init_slice_contexts(), ffv1_init_slice_state(), film_read_header(), film_read_packet(), find_and_decode_index(), find_headers_search_validate(), find_next_parse_unit(), find_smallest_bounding_rectangle(), flac_encode_init(), flac_header(), flac_write_block_comment(), flashsv_decode_frame(), flic_read_header(), flv_set_video_codec(), fourxm_read_header(), frame_list_add_frame(), frame_thread_init(), generate_codebook(), generate_dither_noise(), generate_new_codebooks(), get_codec_data(), get_meta(), get_metadata(), get_stats(), get_tag(), getstr8(), gif_encode_init(), halfpel_interpol(), hls_read_header(), hls_write_header(), idcin_read_header(), iff_read_header(), imx_dump_header(), init(), init_bundles(), init_coef_vlc(), init_context_frame(), init_cook_mlt(), init_er(), init_filter_param(), init_mv_table(), init_pass2(), initFilter(), ivi_init_tiles(), latm_decode_audio_specific_config(), latm_write_packet(), libopus_encode_init(), libschroedinger_decode_frame(), main(), make_digest_auth(), make_format_list(), matroska_decode_buffer(), matroska_fix_ass_packet(), matroska_read_header(), mjpeg2jpeg_filter(), mjpeg_decode_com(), mjpega_dump_header(), mmap_init(), mmap_read_frame(), mov2textsub(), mov_read_cmov(), mov_read_ctts(), mov_read_dref(), mov_read_ftyp(), 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(), mpegts_open_section_filter(), mpegts_push_data(), mpegts_set_stream_info(), mpegts_write_header(), mpegts_write_packet_internal(), mss3_decode_init(), mss4_decode_init(), mxf_read_content_storage(), mxf_read_generic_descriptor(), mxf_read_material_package(), mxf_read_primer_pack(), mxf_read_sequence(), mxf_read_source_package(), mxpeg_decode_mxm(), new_connection(), noise(), nsv_parse_NSVf_header(), ogg_new_buf(), ogg_new_stream(), ogg_read_page(), ogg_save(), oggvorbis_encode_init(), open_audio(), open_null_ctx(), open_output_file(), open_video(), opus_header(), packet_queue_put(), pad_last_frame(), parse_ffconfig(), parse_forced_key_frames(), parse_MP4DecConfigDescrTag(), parse_packed_headers(), parse_picture(), parse_playlist(), parse_setup_header(), parse_vtrk(), pcx_decode_frame(), pre_process_video_frame(), precalc_coefs(), prepare_sdp_description(), print_sdp(), qt_rtp_parse_packet(), queue_frames(), r3d_read_rdvo(), radix_sort(), raw_init_decoder(), read_apic(), read_frame(), read_geobtag(), read_header(), read_shape_from_file(), read_specific_config(), ready_codebook(), rl2_read_header(), rm_read_extradata(), 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(), smacker_read_header(), smjpeg_read_header(), sox_read_header(), spdif_write_header(), speex_header(), start_jack(), submit_stats(), svq1_decode_frame(), svq1_encode_frame(), svq3_decode_init(), svq3_parse_packet(), sws_allocVec(), sws_getDefaultFilter(), sws_init_context(), tak_read_header(), text2movsub(), tgv_decode_frame(), tiff_unpack_strip(), tm2_build_huff_table(), transcode_init(), tscc2_decode_init(), tta_decode_init(), unescape(), unpack_codebook(), utvideo_encode_init(), vble_decode_init(), vc1t_read_header(), vfw_read_header(), vid_read_packet(), video_audio_display(), video_get_buffer(), 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_decode_frame(), vp8_encode(), vp8_init(), vqa_decode_init(), vqf_read_header(), wc3_read_header(), write_extradata(), wtvfile_open_sector(), X264_init(), xan_decode_init(), XAVS_init(), xiph_handle_packet(), xiph_parse_fmtp_pair(), xmv_process_packet_header(), xmv_read_header(), xvid_encode_init(), xvid_strip_vol_header(), and xwma_read_header().

static void* av_malloc_array ( size_t  nmemb,
size_t  size 
)
inlinestatic

Definition at line 93 of file mem.h.

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
sizeSize 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 158 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(), adx_read_header(), aiff_read_header(), alac_encode_init(), alloc_buffer(), alloc_frame_buffer(), alloc_picture(), alloc_scratch_buffers(), amr_new_context(), asf_read_picture(), asf_read_stream_properties(), asfrtp_new_context(), atrac3_decode_init(), audio_get_buffer(), av_aes_alloc(), av_audio_fifo_alloc(), av_bitstream_filter_init(), av_dict_set(), av_dump_format(), av_fifo_alloc(), av_mallocz_array(), av_md5_alloc(), av_new_program(), av_parser_init(), av_sha_alloc(), av_tree_node_alloc(), avcodec_alloc_frame(), avcodec_fill_audio_frame(), avcodec_get_context_defaults3(), avcodec_open2(), avfilter_copy_buf_props(), avfilter_get_audio_buffer_ref_from_arrays(), avfilter_get_video_buffer_ref_from_arrays(), avfilter_graph_alloc(), avfilter_inout_alloc(), avfilter_link(), avfilter_open(), avformat_new_stream(), avformat_open_input(), avi_read_header(), avi_write_header(), avio_alloc_context(), avisynth_read_header(), avpriv_dv_init_demux(), avpriv_new_chapter(), avresample_alloc_context(), bfi_decode_init(), channelmap_filter_frame(), che_configure(), cinvideo_decode_init(), cng_decode_init(), config_input(), config_output(), configure_filtergraph(), cook_decode_init(), copy_chapters(), decode_dvd_subtitles(), decode_frame(), decode_init(), decode_init_thread_copy(), decode_main_header(), decode_pic(), decode_stream_header(), DEF_CHOOSE_FORMAT(), dfa_decode_init(), display_end_segment(), doTest(), dvbsub_display_end_segment(), dvbsub_parse_display_definition_segment(), dvbsub_parse_page_segment(), dvbsub_parse_region_segment(), encode_frame(), encode_init(), encode_picture_ls(), enqueue_packet(), ff_all_channel_layouts(), ff_all_samplerates(), ff_ass_add_rect(), 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_default_get_audio_buffer(), ff_dither_alloc(), ff_er_frame_end(), ff_h264_decode_picture_parameter_set(), ff_h264_decode_seq_parameter_set(), 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_make_format_list(), ff_mjpeg_decode_sof(), ff_mp4_read_dec_config_descr(), ff_mpegts_parse_open(), ff_nut_add_sp(), ff_psy_init(), ff_psy_preprocess_init(), ff_rate_control_init(), ff_rdt_parse_open(), 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_encode_init(), ffv1_init_slice_contexts(), find_headers_search_validate(), fixup_vorbis_headers(), flac_read_header(), flashsv_encode_frame(), flashsv_encode_init(), flv_get_extradata(), flv_queue_extradata(), flv_write_header(), frame_thread_init(), g722_encode_init(), get_attachment(), get_buffer(), get_http_header_data(), get_private_data(), gif_encode_init(), gxf_write_header(), h263_new_context(), h264_new_context(), h264_slice_header_init(), handle_file(), http_prepare_data(), http_server(), init(), init_er(), init_input_filter(), init_muxer(), init_parse_context(), ism_write_header(), join_config_output(), join_init(), join_request_frame(), jpeg_new_context(), latm_new_context(), libopenjpeg_create_image(), libopus_encode_init(), libschroedinger_encode_frame(), link_filter_inouts(), load_glyph(), main(), make_format_list(), matroska_parse_frame(), matroska_parse_laces(), matroska_parse_rm_audio(), matroska_read_header(), mkv_start_cues(), mkv_start_seekhead(), mkv_write_header(), mmsh_open(), mov_read_chapters(), mov_read_covr(), mov_read_dref(), mov_read_dvc1(), mov_read_glbl(), mov_read_smi(), mov_read_strf(), mov_read_trak(), mov_read_wave(), mov_write_dvc1_structs(), mov_write_header(), mp_decode_init(), mpc8_read_header(), mpc_read_header(), mpeg_mux_init(), mpeg_mux_write_packet(), mpegts_add_service(), mpegts_open_pes_filter(), mpegts_open_section_filter(), mpegts_write_header(), mss2_decode_init(), mxf_compute_index_tables(), mxf_compute_ptses_fake_index(), mxf_get_sorted_table_segments(), mxf_read_index_entry_array(), mxf_read_local_tags(), mxf_write_header(), mxpeg_decode_mxm(), new_connection(), new_context(), new_eval_expr(), new_output_stream(), new_stream(), new_variant(), new_video_stream(), nsv_parse_NSVf_header(), nsv_parse_NSVs_header(), nut_write_header(), ogg_buffer_page(), ogg_build_flac_headers(), ogg_build_opus_headers(), ogg_build_speex_headers(), ogg_save(), ogg_write_header(), ogg_write_vorbiscomment(), oma_read_header(), open_input_file(), open_output_file(), opt_channel_layout(), opt_filter_complex(), opus_header(), parse_acl_row(), parse_dynamic_acl(), parse_ffconfig(), parse_fmtp_config(), parse_inputs(), parse_keyframes_index(), parse_primary(), parse_sws_flags(), prepare_sdp_description(), psy_3gpp_init(), pthread_cond_init(), put_main_header(), qcelp_new_context(), qdm2_extradata_new(), qdm2_parse_config(), qt_rtp_new(), qt_rtp_parse_packet(), qtrle_encode_init(), rdt_new_context(), rdt_parse_b64buf(), read_apic(), read_geobtag(), read_header(), read_kuki_chunk(), read_shape_from_file(), read_tfra(), ready_codebook(), ready_residue(), rl2_decode_init(), rl2_read_header(), roq_encode_init(), rtp_new_av_stream(), rtp_new_connection(), rtsp_read_header(), rv34_decoder_alloc(), sap_write_header(), setup_find_stream_info_opts(), smacker_decode_header_tree(), smacker_read_header(), smka_decode_frame(), sp5x_decode_frame(), speex_header(), stream_open(), svq1_encode_init(), svq1_encode_plane(), svq3_decode_init(), svq3_extradata_new(), sws_alloc_context(), theora_header(), thread_init(), tm2_build_huff_table(), transcode_init(), tta_decode_init(), tta_read_header(), update_dimensions(), url_alloc_for_protocol(), url_open_dyn_buf_internal(), utvideo_encode_init(), vc1_decode_frame(), vc1_decode_init(), vc1_extract_headers(), vda_decoder_callback(), video_get_buffer(), videostream_cb(), vmd_read_header(), 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(), vp8_alloc_frame(), vp8_new_context(), wmv2_encode_init(), wsvqa_read_header(), wsvqa_read_packet(), wtvfile_open_sector(), wv_alloc_frame_context(), XAVS_init(), xiph_new_context(), xwma_read_header(), and yop_read_header().

static void* av_mallocz_array ( size_t  nmemb,
size_t  size 
)
inlinestatic

Definition at line 144 of file mem.h.

Referenced by check_stream_max_drift(), ff_h264_alloc_tables(), and ff_png_zalloc().

void av_memcpy_backptr ( uint8_t dst,
int  back,
int  cnt 
)

deliberately overlapping memcpy implementation

Parameters
dstdestination buffer
backhow many bytes back we start (the initial size of the overlapping window)
cntnumber 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 252 of file mem.c.

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

void* av_realloc ( void ptr,
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
ptrPointer to a memory block already allocated with av_malloc(z)() or av_realloc() or NULL.
sizeSize in bytes for 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.
See Also
av_fast_realloc()

Definition at line 116 of file mem.c.

Referenced by add_fragment(), add_pat_entry(), add_tracked_method(), alloc_and_copy(), alloc_table(), allocate_buffers(), asf_write_packet(), asfrtp_parse_packet(), audio_decode_frame(), av_dict_set(), av_fast_realloc(), av_grow_packet(), av_packet_new_side_data(), av_probe_input_buffer(), avcodec_encode_audio2(), avcodec_encode_video2(), avfilter_graph_add_filter(), avformat_new_stream(), avi_read_header(), avi_write_packet(), bmv_read_packet(), concat_open(), concatenate_packet(), copy_chapters(), decode_frame(), dtext_prepare_text(), dyn_buf_write(), ebml_parse_elem(), ff_alsa_extend_reorder_buf(), ff_ass_add_rect(), ff_dynarray_add(), ff_insert_pad(), ff_mov_write_packet(), ff_program_add_stream_index(), ffio_rewind_with_probe_data(), fixup_vorbis_headers(), flashsv_decode_frame(), get_packet(), get_tcp_server_response(), grow_array(), gxf_write_map_packet(), gxf_write_packet(), h264_mp4toannexb_filter(), handle_file(), handle_notify(), libschroedinger_encode_frame(), main(), matroska_decode_buffer(), matroska_deliver_packet(), mkv_add_cuepoint(), mkv_add_seekhead_entry(), mov_build_index(), mov_flush_fragment(), mov_read_extradata(), mov_read_trex(), mov_read_trun(), mxf_add_metadata_set(), mxf_read_partition_pack(), mxf_write_packet(), mxf_write_partition(), new_video_stream(), ogg_new_stream(), ogg_restore(), parse_strk(), probe_codec(), probe_group_enter(), qt_rtp_parse_packet(), queue_frames(), rdt_parse_sdp_line(), realloc_buffer(), rtmp_http_write(), rtmp_open(), sample_queue_push(), smacker_read_packet(), tgv_decode_inter(), theora_header(), tm2_read_stream(), update_context_from_user(), vc1_decode_frame(), vp56_size_changed(), and xan_decode_frame().