Collaboration diagram for Memory Management:

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
void *	av_malloc (size_t size) av_malloc_attrib av_alloc_size(1)
	Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if available on the CPU). More...

	av_alloc_size (1, 2) static inline void *av_malloc_array(size_t nmemb
	Helper function to allocate a block of size * nmemb bytes with using av_malloc() More...

return	av_malloc (nmemb *size)

void *	av_realloc (void *ptr, size_t size) av_alloc_size(2)
	Allocate or reallocate a block of memory. More...

void *	av_realloc_f (void *ptr, size_t nelem, size_t elsize)
	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...

void *	av_mallocz (size_t size) av_malloc_attrib av_alloc_size(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...

void *	av_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. More...

return	av_mallocz (nmemb *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_dynarray_add (void tab_ptr, int nb_ptr, void *elem)
	Add an element to a dynamic array. More...

static int	av_size_mult (size_t a, size_t b, size_t *r)
	Multiply two size_t values checking for overflow. More...

void	av_max_alloc (size_t max)
	Set the maximum size that may me allocated in one block. More...

void	av_memcpy_backptr (uint8_t *dst, int back, int cnt)
	deliberately overlapping memcpy implementation More...

Variables
size_t	size

Detailed Description

Macro Definition Documentation

#define av_alloc_size ( ... )

Definition at line 72 of file mem.h.

#define av_malloc_attrib

Definition at line 66 of file mem.h.

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

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

Definition at line 60 of file mem.h.

Function Documentation

av_alloc_size	(	1	,
		2
	)

Helper function to allocate a block of size * nmemb bytes with using av_malloc()

Helper function to allocate a block of size * nmemb bytes with using 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()

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 213 of file mem.c.

Referenced by av_samples_alloc_array_and_samples(), config_audio_output(), config_input(), config_output(), config_props(), config_video_output(), encode_dvd_subtitles(), ff_avfilter_graph_config_pointers(), ff_pca_init(), get_codecs_sorted(), get_histogram(), init(), 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(), probe_file(), resample_init(), swri_rematrix_init(), and wavesynth_parse_extradata().

void av_dynarray_add	(	void *	tab_ptr,
		int *	nb_ptr,
		void *	elem
	)

Add an element to a dynamic array.

Parameters

tab_ptr	Pointer to the array.
nb_ptr	Pointer to the number of elements in the array.
elem	Element to be added.

Definition at line 233 of file mem.c.

void av_free ( void * ptr )

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 183 of file mem.c.

Referenced by a64multi_close_encoder(), aac_decode_frame(), add_file(), add_pes_stream(), adpcm_encode_frame(), 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_buffer_default_free(), av_buffersink_set_frame_size(), 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_free_packet(), av_freep(), av_hmac_alloc(), av_hmac_free(), av_image_alloc(), av_isxdigit(), av_opt_get_key_value(), av_opt_query_ranges_default(), av_opt_set_bin(), av_opt_set_from_string(), av_parser_close(), av_parser_init(), av_picture_pad(), av_probe_input_buffer(), av_realloc_f(), av_samples_alloc(), av_tree_destroy(), avcodec_alloc_context3(), avcodec_encode_video(), avfilter_free(), avfilter_init_str(), avfilter_ref_buffer(), avfilter_unref_buffer(), avformat_free_context(), avformat_new_stream(), avi_read_close(), avi_write_trailer(), avio_close(), avio_close_dyn_buf(), avpicture_free(), avpriv_dv_init_demux(), bfi_decode_close(), build_filter(), caf_write_packet(), callback(), cdxl_decode_end(), celt_header(), channelmap_filter_frame(), clear_blocks_dcbz128_ppc(), close(), close_audio(), close_connection(), close_null_ctx(), close_video(), cmdutils_read_file(), cng_decode_close(), cng_encode_close(), compile_kernel_file(), concat_open(), config_output(), convert_str(), cook_decode_close(), copy_frame(), data_open(), decode_end(), decode_frame(), decode_lowdelay(), 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(), exit_program(), 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_avfilter_default_free_buffer(), ff_cavs_end(), ff_ccitt_unpack(), ff_command_queue_pop(), ff_create_schro_frame(), ff_dct_end(), ff_dct_init(), ff_default_get_video_buffer(), 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_h264_decode_picture_parameter_set(), ff_h264_decode_seq_parameter_set(), ff_http_auth_create_response(), ff_http_match_no_proxy(), 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_packet_free_side_data(), 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_open_transport_ctx(), 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_vf_get_image(), ff_wma_end(), ff_wms_parse_sdp_a_line(), ff_xvid_rate_control_init(), ff_yuv2rgb_c_init_tables(), ffio_fdopen(), ffio_rewind_with_probe_data(), ffio_set_buf_size(), film_read_close(), film_read_header(), film_read_packet(), find_and_decode_index(), find_motion(), flac_parse(), flac_parse_close(), flac_read_header(), flashsv_decode_end(), flashsv_encode_end(), flic_read_header(), flush(), 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(), freeBuffers(), frei0r_init(), generate_codebook(), generate_new_codebooks(), get_buffer2(), get_cookies(), get_meta(), get_metadata(), get_moov_size(), get_private_data(), get_tag(), glyph_enu_free(), guess_ni_flag(), h263_free_context(), h263_handle_packet(), h264_free_context(), h264_mp4toannexb_filter(), handle_file(), handle_invoke_error(), handle_invoke_result(), hls_write_header(), hls_write_trailer(), http_connect(), http_parse_request(), http_receive_data(), iec61883_close(), iec61883_parse_queue_dv(), iec61883_parse_queue_hdv(), 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(), libschroedinger_decode_frame(), libschroedinger_free_frame(), link_filter_inouts(), load_mask(), load_path(), m4sl_cb(), main(), make_digest_auth(), matroska_clear_queue(), matroska_decode_buffer(), matroska_deliver_packet(), matroska_parse_block(), matroska_parse_frame(), matroska_parse_rm_audio(), matroska_read_close(), matroska_read_header(), microdvd_decode_frame(), mimic_decode_end(), mjpeg_decode_com(), mkv_flush_dynbuf(), mkv_write_attachments(), mkv_write_block(), mkv_write_codecprivate(), mkv_write_seekhead(), mkv_write_trailer(), mmap_close(), mmap_init(), mmap_release_buffer(), mms_close(), mmsh_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_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(), 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_close(), 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_device_name(), parse_filter(), parse_fmtp_config(), parse_frames(), parse_inputs(), parse_interval(), parse_key_value_pair(), parse_options(), parse_outputs(), parse_rule(), 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(), predictor_calc_error(), 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_frame(), read_geobtag(), read_shape_from_file(), read_tag(), read_whole_file(), reallocAlign(), release_buffer(), resample_init(), 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(), 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_params(), set_string_binary(), shift_data(), shorts2str(), show_codecs(), show_stream(), smacker_decode_header_tree(), smacker_read_close(), smacker_read_header(), smka_decode_frame(), sp5x_decode_frame(), Stagefright_decode_frame(), stream_close(), stream_open(), svq1_decode_frame(), svq3_decode_init(), svq3_extradata_free(), svq3_parse_packet(), swri_get_dither(), swri_realloc_audio(), sws_addVec(), sws_convVec(), sws_freeContext(), sws_freeFilter(), sws_freeVec(), sws_scale(), sws_shiftVec(), sws_subVec(), tcp_write_packet(), tgv_decode_end(), thread_entry(), 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(), uninit(), update_context_from_user(), url_open_dyn_buf_internal(), var_read_float(), var_read_int(), vc1_decode_frame(), vc1_decode_init(), vc1_extract_headers(), vfw_read_close(), 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(), vp6_decode_free(), vp8_free_buffer(), vp8_free_context(), wavesynth_close(), wavesynth_init(), worker(), write_globalinfo(), write_header_chunk(), write_headers(), write_streaminfo(), write_trailer(), wsvqa_read_header(), 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_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

ptr	Pointer to the pointer to the memory block which should be freed.

See also: av_free()

Definition at line 198 of file mem.c.

Referenced by aac_decode_close(), aac_encode_close(), aac_encode_end(), aacPlus_encode_close(), add_doubles_metadata(), add_file(), add_shorts_metadata(), adpcm_encode_close(), adx_read_header(), aiff_write_packet(), aiff_write_trailer(), alac_decode_close(), alac_encode_close(), alloc_scratch_buffers(), amr_decode_fix_avctx(), 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_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_expr_free(), av_fast_padded_malloc(), av_fast_padded_mallocz(), av_fft_end(), 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_free_packet(), av_opencl_free_device_list(), av_opencl_free_external_env(), av_opencl_get_device_list(), av_opt_free(), av_opt_freep_ranges(), av_parser_init(), av_probe_input_buffer(), av_samples_alloc_array_and_samples(), av_tempfile(), av_write_trailer(), avcodec_close(), avcodec_copy_context(), avcodec_encode_audio(), avcodec_encode_audio2(), avcodec_encode_video(), avcodec_fill_audio_frame(), avcodec_free_frame(), avcodec_get_frame_defaults(), avcodec_open2(), avfilter_copy_buffer_ref_props(), avfilter_free(), avfilter_graph_free(), avfilter_graph_parse(), avfilter_graph_parse2(), avfilter_init_str(), avfilter_inout_free(), avfilter_link_free(), avfilter_ref_buffer(), avfilter_unref_buffer(), 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(), che_configure(), clean_tracks(), cleanup(), clear_programs(), cllc_decode_close(), close_connection(), close_decoder(), compat_free_buffer(), concat_close(), concat_open(), concat_read_close(), config_output(), 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_dvd_subtitles(), decode_end(), decode_frame(), decode_init(), decode_packet(), 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_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(), estimate_best_b_count(), exit_program(), 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_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_avfilter_default_free_buffer(), ff_bgmc_end(), ff_cavs_end(), ff_command_queue_pop(), ff_dither_free(), ff_fft_end(), ff_fft_init(), ff_filter_alloc(), ff_frame_thread_encoder_free(), ff_free_stream(), ff_free_vlc(), ff_generate_avci_extradata(), ff_get_audio_buffer(), 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_j2k_cleanup(), ff_j2k_dwt_destroy(), 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_packet_free_side_data(), 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_open_transport_ctx(), 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_vda_create_decoder(), ff_vda_destroy_decoder(), ff_vorbis_comment(), ff_vp56_free_context(), ffio_rewind_with_probe_data(), ffm_close(), ffurl_closep(), ffv1_close(), fieldmatch_uninit(), 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(), g722_encode_close(), 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(), get_tcp_server_response(), gif_decode_close(), gif_encode_close(), gif_write_trailer(), glyph_enu_free(), guess_dc(), gxf_write_trailer(), h264_mp4toannexb_filter(), handle_connection(), handle_file(), hls_read_header(), http_connect(), http_get_file_handle(), http_prepare_data(), http_send_data(), ico_write_trailer(), id3v2_put_ttag(), init(), init_er(), init_pattern_from_file(), initFilter(), ism_free(), ivi_free_buffers(), join_config_output(), join_uninit(), 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(), main(), matroska_clear_queue(), matroska_deliver_packet(), matroska_read_header(), md5_close(), md5_finish(), mj2_create_image(), mjpega_dump_header(), mkv_write_simpletag(), mkv_write_trailer(), mmap_read_frame(), mmsh_open_internal(), mmsh_read_seek(), modplug_read_close(), mov_create_chapter_track(), mov_read_chapters(), mov_read_close(), mov_read_ctts(), mov_read_ftyp(), mov_read_hdlr(), mov_read_stsz(), mov_read_trak(), mov_write_header(), mov_write_trailer(), movie_uninit(), mp3_queue_flush(), mp3lame_encode_close(), mp_decode_end(), 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_replace_stream(), ogg_write_header(), ogg_write_pages(), ogg_write_trailer(), oggvorbis_encode_close(), open_input_file(), opt_map(), packet_queue_flush(), pad_last_frame(), paf_vid_close(), parse_command(), parse_ffconfig(), parse_fmtp_config(), parse_iplconvkernel(), parse_key_value_pair(), parse_keyframes_index(), parse_link_name(), parse_picture(), parse_presentation_segment(), parse_primary(), parse_sws_flags(), pcm_encode_close(), pmp_close(), predictor_calc_error(), print_sdp(), probe_codec(), probe_file(), prores_encode_close(), psy_3gpp_end(), pthread_cond_destroy(), put_str16(), qdm2_parse_config(), qt_rtp_free(), qt_rtp_parse_packet(), query_codec(), 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_kuki_chunk(), read_thread(), read_ttag(), realloc_buffer(), remove_decoded_packets(), resample_free(), roq_dpcm_encode_close(), rtmp_calc_swfhash(), rtmp_close(), rtmp_http_close(), rtmp_open(), rtp_write_header(), 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_string(), set_string_binary(), shorten_decode_close(), show_help(), smjpeg_read_header(), 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_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(), tscc2_decode_end(), tta_decode_close(), tta_decode_init(), 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(), vfw_read_header(), vid_read_close(), vid_read_packet(), video_encode_example(), vorbis_cleanup(), vorbis_encode_close(), vorbis_free(), vorbis_header(), vp3_decode_end(), vp8_free(), vqa_decode_end(), vqa_decode_init(), wavpack_decode_end(), 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_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_doubles_metadata(), add_file(), add_metadata(), add_shorts_metadata(), add_string_metadata(), adpcm_encode_init(), alloc_scratch_buffers(), alloc_sequence_buffers(), allocate_frame_buffers(), allocate_tables(), allocStuff(), 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_asprintf(), av_audio_convert_alloc(), av_bprint_finalize(), av_buffer_alloc(), av_buffersink_params_alloc(), av_d2str(), av_expr_parse(), av_fft_end(), av_fft_init(), av_fifo_alloc(), av_file_map(), av_frame_new_side_data(), av_frame_ref(), av_get_token(), av_image_alloc(), av_lzo1x_decode(), av_malloc(), av_mallocz(), av_opt_get(), av_opt_set_bin(), av_packet_new_side_data(), av_packet_split_side_data(), av_parser_change(), av_picture_pad(), av_realloc(), av_samples_alloc(), av_strdup(), av_tempfile(), avcodec_alloc_context3(), avcodec_alloc_frame(), avfilter_ref_buffer(), avformat_alloc_context(), avformat_find_stream_info(), avi_read_header(), 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(), clear_blocks_dcbz128_ppc(), cmdutils_read_file(), cng_encode_init(), concat_open(), config(), config_input(), config_output(), config_props(), convert_str(), copy_parameter_set(), copy_video_props(), create_all_formats(), create_cel_evals(), create_map(), create_vorbis_context(), data_open(), DECLARE_QUERYINTERFACE(), decode_dvd_subtitles(), decode_frame(), decode_header_trees(), decode_init(), decode_main_header(), decode_picture_header(), decode_rle(), denoise_depth(), dfa_read_header(), 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_page_segment(), dvbsub_parse_region_segment(), dvdsub_parse(), dvdsub_parse_extradata(), ebml_read_ascii(), eightsvx_decode_frame(), encode_frame(), encode_init(), encode_intervals(), encode_picture_ls(), escape130_decode_init(), estimate_best_b_count(), extract_header(), Faac_encode_init(), ff_ac3_float_mdct_init(), 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_gen_syncpoint_search(), ff_http_auth_create_response(), ff_huffyuv_alloc_temp(), ff_init_elbg(), ff_init_rl(), ff_init_vlc_sparse(), ff_ivi_init_tiles(), ff_j2k_dwt_init(), ff_j2k_init_component(), 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_parse_mpeg2_descriptor(), ff_pca_init(), ff_psy_init(), ff_rtmp_packet_create(), ff_rtsp_open_transport_ctx(), ff_rv34_decode_frame(), ff_sauce_read(), ff_slice_buffer_init(), ff_sndio_open(), ff_store_parser_state(), 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(), ffm2_read_header(), 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_motion(), 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_buffer_internal(), get_codec_data(), get_cookies(), get_geokey_val(), get_key(), get_meta(), get_metadata(), get_sockaddr(), get_stats(), get_tag(), getstr8(), gif_encode_init(), gif_write_packet(), guess_dc(), halfpel_interpol(), hls_read_header(), hls_write_header(), idcin_read_header(), 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_stream(), init_tiles(), initFilter(), interpolate(), interpolate_refplane(), iso88591_to_utf8(), 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(), make_format_list(), matroska_decode_buffer(), matroska_read_header(), mjpeg2jpeg_filter(), mjpeg_decode_com(), mjpega_dump_header(), mmap_init(), mmap_read_frame(), modplug_read_header(), mov2textsub(), mov_create_chapter_track(), 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_read_trun(), 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(), ogm_header(), open_audio(), open_null_ctx(), open_output_file(), opus_header(), packet_queue_put_private(), pad_last_frame(), parse_forced_key_frames(), parse_frames(), parse_MP4DecConfigDescrTag(), parse_options(), parse_packed_headers(), parse_picture(), parse_playlist(), parse_presentation_segment(), parse_rule(), parse_setup_header(), parse_times(), pcx_decode_frame(), pp_get_context(), pp_get_mode_by_name_and_quality(), precalc_coefs(), prepare_sdp_description(), print_sdp(), process_line(), prores_encode_init(), qt_rtp_parse_packet(), queue_frames(), r3d_read_rdvo(), radix_sort(), read_ffserver_streams(), 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(), shift_data(), shorts2str(), smacker_read_header(), smjpeg_read_header(), smush_read_header(), sox_read_header(), spdif_write_header(), speex_header(), Stagefright_decode_frame(), start_jack(), submit_stats(), sunrast_decode_frame(), svq1_decode_frame(), svq1_encode_frame(), svq3_decode_init(), svq3_parse_packet(), swf_read_header(), swf_read_packet(), swri_get_dither(), sws_allocVec(), sws_getDefaultFilter(), sws_init_context(), sws_scale(), tak_read_header(), text2movsub(), tgv_decode_frame(), tiff_decode_tag(), tiff_unpack_strip(), tm2_build_huff_table(), tscc2_decode_init(), tta_decode_init(), unescape(), unpack_codebook(), utvideo_decode_init(), utvideo_encode_init(), var_read_string(), vble_decode_init(), vc1t_read_header(), vf_open(), 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(), vp3_decode_frame(), vp56_size_changed(), vp8_decode_frame(), vp8_encode(), vpx_init(), vqa_decode_init(), vqf_read_header(), 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_process_packet_header(), xmv_read_header(), xvid_encode_init(), xvid_strip_vol_header(), and xwma_read_header().

return av_malloc ( nmemb * size )

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 205 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(), afc_read_header(), aiff_read_header(), aiff_write_packet(), alac_encode_init(), alloc_scratch_buffers(), alloc_sequence_buffers(), allocate_buffers(), amr_decode_fix_avctx(), amr_new_context(), asf_read_stream_properties(), asfrtp_new_context(), atrac3_decode_init(), audio_get_buffer(), av_abuffersink_params_alloc(), av_aes_alloc(), av_audio_fifo_alloc(), av_bitstream_filter_init(), av_buffer_create(), av_buffer_pool_init(), av_buffer_ref(), av_buffersrc_add_frame_internal(), av_calloc(), av_dict_set(), av_dump_format(), av_expr_parse(), av_fifo_alloc(), av_frame_alloc(), av_frame_new_side_data(), av_frame_ref(), av_hmac_alloc(), av_md5_alloc(), av_new_program(), av_opencl_alloc_external_env(), av_opencl_get_device_list(), av_opt_query_ranges_default(), av_parser_init(), av_sha_alloc(), av_tree_node_alloc(), avcodec_fill_audio_frame(), avcodec_get_context_defaults3(), avcodec_open2(), 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(), cng_decode_init(), compile_kernel_file(), config(), config_input(), config_output(), configure_filtergraph(), cook_decode_init(), copy_chapters(), D(), decode_dvd_subtitles(), decode_frame(), decode_init(), decode_lowdelay(), decode_main_header(), decode_pic(), decode_picture_header(), decode_stream_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_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_default_get_video_buffer(), ff_dither_alloc(), ff_fast_malloc(), ff_filter_alloc(), ff_frame_thread_encoder_init(), ff_generate_avci_extradata(), ff_get_audio_buffer(), 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_j2k_tag_tree_init(), ff_jpegls_decode_picture(), ff_lpc_init(), ff_lzw_decode_open(), ff_merge_channel_layouts(), ff_mjpeg_decode_sof(), ff_mp4_read_dec_config_descr(), 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_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(), find_option(), flac_read_header(), flashsv2_encode_init(), flashsv_decode_frame(), flashsv_encode_frame(), flashsv_encode_init(), flush(), flv_get_extradata(), flv_queue_extradata(), flv_write_header(), frame_thread_init(), g722_encode_init(), get_audio_buffer(), get_buffer(), get_buffer2(), get_buffer_internal(), get_device_list(), get_http_header_data(), get_private_data(), get_siz(), get_sockaddr(), gif_encode_init(), guess_ni_flag(), gxf_write_header(), h263_new_context(), h264_new_context(), h264_slice_header_init(), handle_file(), http_prepare_data(), http_server(), ico_write_header(), iec61883_callback(), init(), init_er(), init_input_filter(), init_muxer(), init_parse_context(), init_pattern_from_file(), init_pattern_from_string(), intlist_read(), 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_format_list(), make_point(), matroska_parse_frame(), matroska_parse_laces(), matroska_parse_rm_audio(), matroska_read_header(), mj2_create_image(), mkv_start_cues(), mkv_start_seekhead(), mkv_write_header(), mmsh_open_internal(), mov_read_chapters(), mov_read_covr(), mov_read_dref(), mov_read_dvc1(), mov_read_glbl(), mov_read_strf(), mov_read_trak(), mov_read_wave(), mov_text_encode_init(), 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_new_context(), mpegts_open_pes_filter(), mpegts_open_section_filter(), mpegts_write_header(), mss2_decode_init(), mxf_parse_structural_metadata(), 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(), nut_read_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(), 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(), pool_alloc_buffer(), predictor_calc_error(), prepare_sdp_description(), psy_3gpp_init(), pthread_cond_init(), pthread_create(), put_main_header(), qcelp_new_context(), qdm2_extradata_new(), qdm2_parse_config(), qt_rtp_new(), qt_rtp_parse_packet(), qtrle_encode_init(), query_codec(), 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(), reallocAlign(), resample_init(), 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(), 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(), sws_alloc_context(), theora_header(), thread_init(), tiff_decode_tag(), 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(), vf_open(), 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(), vp6_decode_init(), vp8_new_context(), wmv2_encode_init(), worker(), writer_open(), 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().

return av_mallocz ( nmemb * size )

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 av_size_mult(), main(), and opt_max_alloc().

void av_memcpy_backptr	(	uint8_t *	dst,
		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 327 of file mem.c.

Referenced by av_size_mult(), copy_backptr(), decode_dsw1(), decode_frame(), 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

ptr	Pointer to a memory block already allocated with av_malloc(z)() or av_realloc() or NULL.
size	Size 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 141 of file mem.c.

Referenced by add_file(), add_fragment(), add_pat_entry(), add_serial_pair(), add_tracked_method(), alloc_and_copy(), allocate_buffers(), asfrtp_parse_packet(), ass_split_section(), av_bprint_alloc(), av_bprint_finalize(), av_buffer_realloc(), av_dict_set(), av_dynarray_add(), av_fast_realloc(), av_frame_new_side_data(), av_packet_new_side_data(), av_probe_input_buffer(), av_realloc_f(), avfilter_graph_alloc_filter(), avfilter_graph_free(), avformat_new_stream(), bmv_read_packet(), concat_open(), concatenate_packet(), decode_frame(), draw_text(), ebml_parse_elem(), ff_alsa_extend_reorder_buf(), ff_ass_add_rect(), ff_insert_pad(), ff_program_add_stream_index(), filter_frame(), fixup_vorbis_headers(), flashsv_decode_frame(), get_packet(), get_tcp_server_response(), grow_array(), h264_mp4toannexb_filter(), handle_file(), handle_notify(), libschroedinger_encode_frame(), load_textfile(), 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(), nut_read_header(), nut_write_packet(), ogg_new_stream(), ogg_restore(), probe_codec(), qt_rtp_parse_packet(), rdt_parse_sdp_line(), realloc_buffer(), realloc_section_array(), reconfigure_at_keyframe(), rtmp_calc_swf_verification(), rtmp_http_write(), rtmp_open(), sample_queue_push(), smacker_read_packet(), tgv_decode_inter(), theora_header(), tm2_read_stream(), update_context_from_user(), update_index(), vc1_decode_frame(), vp56_size_changed(), and xan_decode_frame().

void* av_realloc_f	(	void *	ptr,
		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(), avi_read_header(), avi_write_packet(), config_output(), copy_chapters(), decode_frame(), dyn_buf_write(), ff_mov_write_packet(), ffio_rewind_with_probe_data(), fourxm_read_header(), gxf_write_map_packet(), gxf_write_packet(), main(), parse_commands(), parse_forced_key_frames(), parse_intervals(), queue_frames(), and read_whole_file().

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 204 of file mem.h.

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

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 220 of file mem.c.

Referenced by add_tracked_method(), av_dict_set(), av_opt_freep_ranges(), 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(), configure_video_filters(), 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_video_stream(), open_output_file(), opt_filter_complex(), opt_map(), opt_vstats_file(), parse_device_name(), parse_ffconfig(), parse_fmtp(), parse_frames(), parse_psfile(), 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_string(), show_help(), split_init(), Stagefright_init(), udp_open(), write_option(), x11grab_read_header(), and X264_init().

Variable Documentation

size_t size

Initial value:

{
    if (size <= 0 || nmemb >= INT_MAX / size)
        return NULL

Definition at line 95 of file mem.h.

size_t size

Initial value:

{
    if (size <= 0 || nmemb >= INT_MAX / size)
        return NULL

Definition at line 11127 of file twinvq_data.h.

Referenced by aac_sync(), abs_pow34_v(), adaptive_gain_control(), add_fragment(), add_metadata(), add_metadata_from_side_data(), adpcm_swf_decode(), adx_read_packet(), afc_read_packet(), aiff_read_header(), aiff_read_packet(), alloc_table(), 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(), ass_decode_close(), ass_get_duration(), ast_read_packet(), audio_write_packet(), av_audio_fifo_drain(), av_audio_fifo_read(), av_audio_fifo_write(), av_bprint_escape(), 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_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_picture_pad(), av_realloc_f(), av_samples_alloc(), av_shrink_packet(), av_tempfile(), avi_load_index(), avi_read_header(), avi_read_nikon(), avi_read_packet(), avi_read_tag(), avi_sync(), avi_write_packet(), avio_read(), avio_size(), avio_tell(), 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(), 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(), 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(), dshow_cycle_formats(), dump_extradata(), dv1394_read_packet(), dv_encode_ac(), dv_encode_video_segment(), dv_extract_audio(), dv_extract_video_info(), dv_frame_offset(), dv_guess_qnos(), dv_inject_audio(), dv_read_packet(), 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_packet2(), ff_alsa_extend_reorder_buf(), ff_amf_get_field_value(), ff_amf_tag_contents(), ff_amf_tag_size(), ff_ass_split_override_codes(), ff_avc_parse_nal_units(), ff_dxva2_commit_buffer(), ff_er_frame_end(), ff_generate_avci_extradata(), ff_h263_round_chroma(), ff_h264_decode_extradata(), ff_h264_decode_sei(), ff_huff_gen_len_table(), ff_interleave_new_audio_packet(), 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_rm_read_mdpr_codecdata(), ff_rtmp_packet_create(), ff_rtmp_packet_read_internal(), 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_rtsp_open_transport_ctx(), ff_rv34_decode_frame(), ff_set_min_dist_lsf(), ff_vaapi_alloc_slice(), ff_vaapi_get_surface_id(), ff_vdpau_add_buffer(), ff_vdpau_get_surface_id(), ff_vf_mpi_clear(), ff_voc_get_packet(), ff_vorbis_comment(), ffio_limit(), ffio_read_partial(), ffio_wfourcc(), 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_headers_search(), find_headers_search_validate(), find_new_headers(), flic_read_packet(), flush_encoders(), flush_packet(), flv_get_extradata(), 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_idct_dc_add_internal(), hex_dump_internal(), hex_search(), hpel_motion_search(), http_buf_read(), http_get_file_handle(), 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(), interpolate(), ism_flush(), jpeg_put_comments(), jpeg_table_header(), kalman_smoothen(), klv_decode_ber_length(), klv_encode_ber_length(), l2s_dia_search(), lavfi_read_packet(), linear_perm(), load_font_file(), lpc_weighting(), lvf_read_header(), lvf_read_packet(), main(), matroska_parse_laces(), matroska_probe(), md5_write(), memcpy_rgb332_to_bgr8(), merge(), mkv_blockgroup_size(), mkv_write_block(), mmf_rate(), 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_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(), mpc8_handle_chunk(), mpc8_parse_seektable(), mpc8_probe(), mpc8_read_header(), mpc8_read_packet(), mpc_read_packet(), mpeg4_encode_dc(), 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(), output_immediate(), parse_adts_frame_header(), parse_chunks(), parse_forced_key_frames(), parse_packet(), parse_psfile(), pmp_header(), png_choose_filter(), png_filter_row(), png_write_row(), poll_frame(), postfilter(), predictor(), process_block(), process_ea_header(), propagate_block_data(), put_bits_left(), put_id3v2_tags(), put_meta(), put_qcd(), 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_arbitary(), read_header(), read_index(), read_kuki_chunk(), read_packet(), read_shape_from_file(), read_table(), read_tfra(), read_tree(), read_whole_file(), reorder_pixels(), resample(), rl2_rle_decode(), rm_read_index(), rm_write_audio(), roq_encode_frame(), rso_read_header(), rtmp_calc_swf_verification(), rtmp_http_write(), rtmp_read(), rtmp_write(), rtmpe_write(), rtp_send_mpegaudio(), rtp_send_mpegts_raw(), rtp_send_raw(), rtp_send_samples(), rtp_write_packet(), rv10_decode_frame(), rv10_write_header(), rv34_gen_vlc(), sab_diamond_search(), sample_queue_push(), search_for_quantizers_faac(), set_mvs(), set_put_bits_buffer_size(), setup_partitions(), 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_strip(), transcode_subtitles(), tscc2_decode_frame(), tta_read_header(), tta_read_packet(), udp_read(), umh_search(), unpack(), unpack_codebook(), update_frame_pool(), 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(), vqf_read_header(), vqf_read_packet(), w_c(), wc3_read_header(), wc3_read_packet(), webp_decode_frame(), wmavoice_decode_packet(), write_packet(), write_root_table(), ws_snd_decode_frame(), wv_read_block_header(), wv_read_packet(), XAVS_init(), xbm_encode_frame(), xwma_read_header(), and xwma_read_packet().

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