FFmpeg
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Those functions set the field of obj with the given name to value. More...
Macros | |
#define | av_opt_set_int_list(obj, name, val, term, flags) |
Set a binary option to an integer list. More... | |
Functions | |
int | av_opt_set (void *obj, const char *name, const char *val, int search_flags) |
int | av_opt_set_int (void *obj, const char *name, int64_t val, int search_flags) |
int | av_opt_set_double (void *obj, const char *name, double val, int search_flags) |
int | av_opt_set_q (void *obj, const char *name, AVRational val, int search_flags) |
int | av_opt_set_bin (void *obj, const char *name, const uint8_t *val, int size, int search_flags) |
int | av_opt_set_image_size (void *obj, const char *name, int w, int h, int search_flags) |
int | av_opt_set_pixel_fmt (void *obj, const char *name, enum AVPixelFormat fmt, int search_flags) |
int | av_opt_set_sample_fmt (void *obj, const char *name, enum AVSampleFormat fmt, int search_flags) |
int | av_opt_set_video_rate (void *obj, const char *name, AVRational val, int search_flags) |
int | av_opt_set_chlayout (void *obj, const char *name, const AVChannelLayout *layout, int search_flags) |
int | av_opt_set_dict_val (void *obj, const char *name, const AVDictionary *val, int search_flags) |
int | av_opt_set_array (void *obj, const char *name, int search_flags, unsigned int start_elem, unsigned int nb_elems, enum AVOptionType val_type, const void *val) |
Add, replace, or remove elements for an array option. More... | |
Those functions set the field of obj with the given name to value.
[in] | obj | A struct whose first element is a pointer to an AVClass. |
[in] | name | the name of the field to set |
[in] | val | The value to set. In case of av_opt_set() if the field is not of a string type, then the given string is parsed. SI postfixes and some named scalars are supported. If the field is of a numeric type, it has to be a numeric or named scalar. Behavior with more than one scalar and +- infix operators is undefined. If the field is of a flags type, it has to be a sequence of numeric scalars or named flags separated by '+' or '-'. Prefixing a flag with '+' causes it to be set without affecting the other flags; similarly, '-' unsets a flag. If the field is of a dictionary type, it has to be a ':' separated list of key=value parameters. Values containing ':' special characters must be escaped. |
search_flags | flags passed to av_opt_find2. I.e. if AV_OPT_SEARCH_CHILDREN is passed here, then the option may be set on a child of obj. |
Set a binary option to an integer list.
obj | AVClass object to set options on |
name | name of the binary option |
val | pointer to an integer list (must have the correct type with regard to the contents of the list) |
term | list terminator (usually 0 or -1) |
flags | search flags |
int av_opt_set | ( | void * | obj, |
const char * | name, | ||
const char * | val, | ||
int | search_flags | ||
) |
Definition at line 835 of file opt.c.
Referenced by av_opt_set_dict2(), av_opt_set_from_string(), avcodec_open2(), configure_audio_filters(), configure_filtergraph(), dump_stream_format(), dump_stream_group(), ff_filter_process_command(), filter_frame(), filter_opt_apply(), hls_start(), hls_write_packet(), init(), init_context_defaults(), init_filter(), init_filter_graph(), init_filters(), ist_add(), LLVMFuzzerTestOneInput(), main(), mmsh_open_internal(), multiview_setup(), new_stream_video(), nppscale_init(), nppscale_parse_expr(), nppscale_scale(), open_track_resource_context(), parse_key_value_pair(), process_command(), rtmp_http_open(), scale_frame(), scale_parse_expr(), segment_start(), set_dispositions(), store_icy(), url_alloc_for_protocol(), and writer_open().
int av_opt_set_int | ( | void * | obj, |
const char * | name, | ||
int64_t | val, | ||
int | search_flags | ||
) |
Definition at line 880 of file opt.c.
Referenced by av1_decode_init(), avformat_find_stream_info(), config_audio_output(), config_input(), draw_qrcode(), estimate_timings_from_pts(), init_filter_graph(), insert_trim(), lavfi_read_header(), LLVMFuzzerTestOneInput(), main(), open_audio(), opus_decode_init(), opus_init_resample(), output_single_frame(), process_client(), query_formats(), swr_alloc_set_opts2(), swr_config_frame(), and vaapi_encode_av1_init().
int av_opt_set_double | ( | void * | obj, |
const char * | name, | ||
double | val, | ||
int | search_flags | ||
) |
int av_opt_set_q | ( | void * | obj, |
const char * | name, | ||
AVRational | val, | ||
int | search_flags | ||
) |
Definition at line 890 of file opt.c.
Referenced by init_filter_graph().
int av_opt_set_bin | ( | void * | obj, |
const char * | name, | ||
const uint8_t * | val, | ||
int | size, | ||
int | search_flags | ||
) |
Definition at line 895 of file opt.c.
Referenced by filter_opt_apply(), init_filter(), lavfi_read_header(), rtmp_calc_swfhash(), rtmp_http_open(), and rtmp_http_send_cmd().
int av_opt_set_image_size | ( | void * | obj, |
const char * | name, | ||
int | w, | ||
int | h, | ||
int | search_flags | ||
) |
int av_opt_set_pixel_fmt | ( | void * | obj, |
const char * | name, | ||
enum AVPixelFormat | fmt, | ||
int | search_flags | ||
) |
int av_opt_set_sample_fmt | ( | void * | obj, |
const char * | name, | ||
enum AVSampleFormat | fmt, | ||
int | search_flags | ||
) |
Definition at line 979 of file opt.c.
Referenced by config_audio_output(), main(), and open_audio().
int av_opt_set_video_rate | ( | void * | obj, |
const char * | name, | ||
AVRational | val, | ||
int | search_flags | ||
) |
int av_opt_set_chlayout | ( | void * | obj, |
const char * | name, | ||
const AVChannelLayout * | layout, | ||
int | search_flags | ||
) |
Definition at line 1000 of file opt.c.
Referenced by config_audio_output(), config_props(), main(), open_audio(), opus_decode_init(), swr_alloc_set_opts2(), and swr_config_frame().
int av_opt_set_dict_val | ( | void * | obj, |
const char * | name, | ||
const AVDictionary * | val, | ||
int | search_flags | ||
) |
Definition at line 984 of file opt.c.
Referenced by read_frame_internal().
int av_opt_set_array | ( | void * | obj, |
const char * | name, | ||
int | search_flags, | ||
unsigned int | start_elem, | ||
unsigned int | nb_elems, | ||
enum AVOptionType | val_type, | ||
const void * | val | ||
) |
Add, replace, or remove elements for an array option.
Which of these operations is performed depends on the values of val and search_flags.
start_elem | Index of the first array element to modify; must not be larger than array size as returned by av_opt_get_array_size(). |
nb_elems | number of array elements to modify; when val is NULL, start_elem+nb_elems must not be larger than array size as returned by av_opt_get_array_size() |
val_type | Option type corresponding to the type of val, ignored when val is NULL. |
The effect of this function will will be as if av_opt_setX() was called for each element, where X is specified by type. E.g. AV_OPT_TYPE_STRING corresponds to av_opt_set().
Typically this should be the same as the scalarized type of the AVOption being set, but certain conversions are also possible - the same as those done by the corresponding av_opt_set*() function. E.g. any option type can be set from a string, numeric types can be set from int64, double, or rational, etc.
val | Array with nb_elems elements or NULL. When NULL, nb_elems array elements starting at start_elem are removed from the array. Any array elements remaining at the end are shifted by nb_elems towards the first element in order to keep the array contiguous. Otherwise (val is non-NULL), the type of val must match the underlying C type as documented for val_type. When AV_OPT_ARRAY_REPLACE is not set in search_flags, the array is enlarged by nb_elems, and the contents of val are inserted at start_elem. Previously existing array elements from start_elem onwards (if present) are shifted by nb_elems away from the first element in order to make space for the new elements. When AV_OPT_ARRAY_REPLACE is set in search_flags, the contents of val replace existing array elements from start_elem to start_elem+nb_elems (if present). New array size is max(start_elem + nb_elems, old array size). |
Definition at line 2283 of file opt.c.
Referenced by configure_audio_filters(), configure_video_filters(), init_filters(), and multiview_setup().