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FFmpeg
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#include "config.h"#include <limits.h>#include <stdint.h>#include <stdlib.h>#include <stdatomic.h>#include <string.h>#include "attributes.h"#include "avassert.h"#include "dynarray.h"#include "error.h"#include "internal.h"#include "intreadwrite.h"#include "macros.h"#include "mem.h"Go to the source code of this file.
Macros | |
| #define | _XOPEN_SOURCE 600 |
| #define | ALIGN (HAVE_SIMD_ALIGN_64 ? 64 : (HAVE_SIMD_ALIGN_32 ? 32 : 16)) |
| #define | FF_MEMORY_POISON 0x2a |
Functions | |
| void | av_max_alloc (size_t max) |
| Set the maximum size that may be allocated in one block. More... | |
| static int | size_mult (size_t a, size_t b, size_t *r) |
| void * | av_malloc (size_t size) |
| Allocate a memory block with alignment suitable for all memory accesses (including vectors if available on the CPU). More... | |
| void * | av_realloc (void *ptr, size_t size) |
| Allocate, reallocate, or free a block of memory. More... | |
| void * | av_realloc_f (void *ptr, size_t nelem, size_t elsize) |
| Allocate, reallocate, or free a block of memory. More... | |
| int | av_reallocp (void *ptr, size_t size) |
| Allocate, reallocate, or free a block of memory through a pointer to a pointer. More... | |
| void * | av_malloc_array (size_t nmemb, size_t size) |
| void * | av_realloc_array (void *ptr, size_t nmemb, size_t size) |
| int | av_reallocp_array (void *ptr, size_t nmemb, size_t size) |
| Allocate, reallocate an array through a pointer to a pointer. More... | |
| void | av_free (void *ptr) |
| Free a memory block which has been allocated with a function of av_malloc() or av_realloc() family. More... | |
| void | av_freep (void *arg) |
Free a memory block which has been allocated with a function of av_malloc() or av_realloc() family, and set the pointer pointing to it to NULL. More... | |
| void * | av_mallocz (size_t size) |
| Allocate a memory block 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) |
| char * | av_strdup (const char *s) |
| Duplicate a string. More... | |
| char * | av_strndup (const char *s, size_t len) |
| Duplicate a substring of a string. More... | |
| void * | av_memdup (const void *p, size_t size) |
| Duplicate a buffer with av_malloc(). More... | |
| int | av_dynarray_add_nofree (void *tab_ptr, int *nb_ptr, void *elem) |
| Add an element to a dynamic array. More... | |
| void | av_dynarray_add (void *tab_ptr, int *nb_ptr, void *elem) |
| Add the pointer to an element to a dynamic array. More... | |
| void * | av_dynarray2_add (void **tab_ptr, int *nb_ptr, size_t elem_size, const uint8_t *elem_data) |
Add an element of size elem_size to a dynamic array. More... | |
| static void | fill16 (uint8_t *dst, int len) |
| static void | fill24 (uint8_t *dst, int len) |
| static void | fill32 (uint8_t *dst, int len) |
| void | av_memcpy_backptr (uint8_t *dst, int back, int cnt) |
| Overlapping memcpy() implementation. More... | |
| void * | av_fast_realloc (void *ptr, unsigned int *size, size_t min_size) |
| Reallocate the given buffer if it is not large enough, otherwise do nothing. More... | |
| static void | fast_malloc (void *ptr, unsigned int *size, size_t min_size, int zero_realloc) |
| void | av_fast_malloc (void *ptr, unsigned int *size, size_t min_size) |
| Allocate a buffer, reusing the given one if large enough. More... | |
| void | av_fast_mallocz (void *ptr, unsigned int *size, size_t min_size) |
| Allocate and clear a buffer, reusing the given one if large enough. More... | |
| int | av_size_mult (size_t a, size_t b, size_t *r) |
Multiply two size_t values checking for overflow. More... | |
Variables | |
| static atomic_size_t | max_alloc_size = INT_MAX |
default memory allocator for libavutil
Definition in file mem.c.
| #define ALIGN (HAVE_SIMD_ALIGN_64 ? 64 : (HAVE_SIMD_ALIGN_32 ? 32 : 16)) |
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static |
Definition at line 80 of file mem.c.
Referenced by av_calloc(), av_malloc_array(), av_realloc_array(), av_realloc_f(), and av_size_mult().
| void* av_calloc | ( | size_t | nmemb, |
| size_t | size | ||
| ) |
Definition at line 264 of file mem.c.
Referenced by a64multi_encode_init(), aax_read_header(), add_filter(), aic_decode_init(), alloc_buffers(), alloc_lut(), alloc_metrics(), alloc_sequence_buffers(), alloc_slice(), allocate_buffers(), allocate_model(), allocate_plane(), allocate_tables(), ambisonics_config(), ap_init(), aribcaption_trans_bitmap_subtitle(), aribcaption_trans_text_subtitle(), atrac3_decode_init(), atrac3p_decode_init(), audio_element_obu(), audio_get_buffer(), av_audio_fifo_alloc(), av_channel_layout_custom_init(), av_channel_layout_from_string(), av_encryption_info_alloc(), av_encryption_init_info_alloc(), av_executor_alloc(), av_frame_ref(), av_opt_set_array(), av_samples_alloc_array_and_samples(), avformat_find_stream_info(), blockdetect_config_input(), blurdetect_config_input(), bonk_init(), build_chord_set(), build_open_gop_key_points(), cfhd_encode_init(), channelmap_config_input(), channelmap_filter_frame(), channelmap_init(), check_add_bytes(), check_add_left_pred(), check_add_left_pred_16(), check_add_median_pred(), check_stream_max_drift(), checkasm_check_nlmeans(), clv_decode_init(), cng_decode_init(), codec_parameters_copy_side_data(), compute_kernel(), config_audio_output(), config_eq_output(), config_filter(), config_input(), config_input0(), config_input_ref(), config_output(), config_params(), config_props(), config_video_output(), connect_ports(), context_init_threaded(), convert_coeffs(), convert_serial2parallel(), convert_sf2tf(), convert_zp2tf(), copy_av_subtitle(), create_vorbis_context(), crossover_setup(), D(), d3d12va_encode_hevc_init_picture_params(), d3d12va_encode_issue(), de_tx_init(), decode_entropy_coded_image(), decode_frame_header(), decode_init(), decode_main_header(), decode_picture_header(), decompose_zp2biquads(), dejudder_init(), delimited_dict_parse(), display_end_segment(), dnxhd_decode_init(), dxva2_init_pool(), encode_dvd_subtitles(), encode_init(), equ_init(), export_multilayer(), fastaudio_init(), ff_cavs_init_top_lines(), ff_d3d12va_decode_init(), ff_ebur128_init(), ff_er_frame_end(), ff_executor_alloc(), ff_ffv1_init_slice_contexts(), ff_ffv1_init_slice_state(), ff_filter_alloc(), ff_frame_pool_get(), ff_frame_thread_init(), ff_framesync_init(), ff_hevc_decode_nal_vps(), ff_iamf_add_audio_element(), ff_init_filters(), ff_init_vscale(), ff_ivi_init_planes(), ff_ivi_init_tiles(), ff_jpeg2000_decode_htj2k(), ff_jpeg2000_init_component(), ff_jpeg2000_tag_tree_init(), ff_make_channel_layout_list(), ff_mjpeg_decode_sof(), ff_mpv_init_context_frame(), ff_opus_parse_extradata(), ff_pca_init(), ff_psy_init(), ff_psy_preprocess_init(), ff_qsvvpp_init(), ff_slice_buffer_init(), ff_snow_alloc_blocks(), ff_snow_common_init_after_header(), ff_vc2enc_init_transforms(), ff_vk_exec_pool_init(), ff_vk_load_props(), ff_vk_shader_add_descriptor_set(), ff_vk_shader_link(), ff_vk_shader_register_exec(), ff_vvc_frame_thread_init(), ffurl_get_protocols(), fg_thread_init(), fill_model_input_tf(), find_component(), find_device(), fir_to_phase(), forward(), g722_encode_init(), gdv_decode_init(), get_audio_buffer(), get_buffer(), get_codecs_sorted(), get_histogram(), get_siz(), graph_config_pointers(), h264_init_context(), hcom_init(), hdr_encode_init(), hds_write_header(), hls_slice_data_wpp(), huf_uncompress(), hwframe_pool_prealloc(), ico_write_header(), infer_completion_callback(), init(), init_band(), init_bundles(), init_chordset(), init_cqt(), init_filter_param(), init_model_ov(), init_parse_context(), init_pattern_from_file(), init_pattern_from_string(), init_prec(), init_segment(), init_tiles(), init_vpp_session(), init_vulkan(), interpolate(), interpolate_pchip(), inverse(), ism_write_header(), ivi_init_tiles(), join_config_output(), join_init(), jpeg2000_decode_ht_cleanup_segment(), jpeg2000_decode_packet(), laf_read_header(), libopus_encode_init(), libx265_encode_set_roi(), load_data(), magy_encode_init(), main(), make_lpf(), map_init(), merge_channel_layouts_internal(), mix_presentation_obu(), mkv_init(), mobiclip_init(), mov_init(), mov_read_iref_dimg(), mov_read_sample_encryption_info(), mov_read_sgpd(), mov_read_stsd(), mov_text_tx3g(), movie_common_init(), mp_decode_init(), multiview_setup(), mxf_compute_index_tables(), mxf_compute_ptses_fake_index(), mxf_get_sorted_table_segments(), mxf_read_primer_pack(), nut_write_header(), nvenc_setup_surfaces(), open_input_file(), open_slave(), opt_copy_array(), opus_decode_init(), oscilloscope_config_input(), osq_init(), overlay_qsv_init(), parse_chunk_headers(), parse_mapping(), parse_models(), pdv_read_header(), pic_arrays_init(), pps_bd(), pps_slice_map(), preload_sofa(), process_frame(), program_opencl_init(), psy_3gpp_init(), qsv_dynamic_pool_alloc(), qsv_dynamic_pool_map_to(), qsv_fixed_frames_derive_to(), qsv_frames_derive_from(), qsv_frames_init(), qsv_init_pool(), qsv_setup_mids(), qsv_stack_init(), qsvvpp_init_vpp_session(), qtrle_encode_init(), read_channels(), read_distribution_bundle(), read_image_grid(), read_iplane(), read_shape_from_file(), read_tfra(), ready_codebook(), ready_residue(), reallocate_inputs(), reallocate_outputs(), rebuild_filter_bank_with_compensation(), resample_init(), rnnoise_model_from_file(), roq_encode_init(), rtsp_read_header(), sap_write_header(), save_subtitle_set(), scalable_channel_layout_config(), scd_read_header(), scd_read_table(), sch_add_filtergraph(), separate_output_names(), set_dispositions(), set_enable_expr(), set_gauss(), set_roi_map(), setup_derivative_buffers(), setup_find_stream_info_opts(), setup_mb_info(), setup_roi(), slice_init_entry_points(), stack_init(), start_prepare(), subband_bufer_alloc(), swri_realloc_audio(), swri_rematrix_init(), tiff_decode_tag(), tm2_build_huff_table(), tq_alloc(), track_index(), try_push_frame(), uri_table_map(), vaapi_encode_issue(), vaapi_stack_init(), vc2_encode_init(), vorbis_parse_id_hdr(), vorbis_parse_setup_hdr_codebooks(), vorbis_parse_setup_hdr_floors(), vorbis_parse_setup_hdr_mappings(), vulkan_device_init(), vvc_decode_init(), wavarc_init(), wavesynth_parse_extradata(), wtvfile_open_sector(), X264_init(), xmv_read_header(), and yae_reset().
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Definition at line 361 of file mem.c.
Referenced by av_memcpy_backptr().
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Definition at line 379 of file mem.c.
Referenced by av_memcpy_backptr().
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static |
Definition at line 419 of file mem.c.
Referenced by av_memcpy_backptr().
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inlinestatic |
Definition at line 527 of file mem.c.
Referenced by av_fast_malloc(), and av_fast_mallocz().
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Definition at line 74 of file mem.c.
Referenced by av_fast_realloc(), av_malloc(), av_max_alloc(), av_realloc(), and fast_malloc().
1.8.17