| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * This file is part of FFmpeg. | ||
| 3 | * | ||
| 4 | * FFmpeg is free software; you can redistribute it and/or | ||
| 5 | * modify it under the terms of the GNU Lesser General Public | ||
| 6 | * License as published by the Free Software Foundation; either | ||
| 7 | * version 2.1 of the License, or (at your option) any later version. | ||
| 8 | * | ||
| 9 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 12 | * Lesser General Public License for more details. | ||
| 13 | * | ||
| 14 | * You should have received a copy of the GNU Lesser General Public | ||
| 15 | * License along with FFmpeg; if not, write to the Free Software | ||
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 17 | */ | ||
| 18 | |||
| 19 | /* | ||
| 20 | * APIs internal to the generic filter(graph) layer. | ||
| 21 | * | ||
| 22 | * MUST NOT be included by individual filters. | ||
| 23 | */ | ||
| 24 | |||
| 25 | #ifndef AVFILTER_AVFILTER_INTERNAL_H | ||
| 26 | #define AVFILTER_AVFILTER_INTERNAL_H | ||
| 27 | |||
| 28 | #include <stdint.h> | ||
| 29 | |||
| 30 | #include "avfilter.h" | ||
| 31 | #include "framequeue.h" | ||
| 32 | |||
| 33 | typedef struct FilterLinkInternal { | ||
| 34 | AVFilterLink l; | ||
| 35 | |||
| 36 | struct FFFramePool *frame_pool; | ||
| 37 | |||
| 38 | /** | ||
| 39 | * Queue of frames waiting to be filtered. | ||
| 40 | */ | ||
| 41 | FFFrameQueue fifo; | ||
| 42 | |||
| 43 | /** | ||
| 44 | * If set, the source filter can not generate a frame as is. | ||
| 45 | * The goal is to avoid repeatedly calling the request_frame() method on | ||
| 46 | * the same link. | ||
| 47 | */ | ||
| 48 | int frame_blocked_in; | ||
| 49 | |||
| 50 | /** | ||
| 51 | * Link input status. | ||
| 52 | * If not zero, all attempts of filter_frame will fail with the | ||
| 53 | * corresponding code. | ||
| 54 | */ | ||
| 55 | int status_in; | ||
| 56 | |||
| 57 | /** | ||
| 58 | * Timestamp of the input status change. | ||
| 59 | */ | ||
| 60 | int64_t status_in_pts; | ||
| 61 | |||
| 62 | /** | ||
| 63 | * Link output status. | ||
| 64 | * If not zero, all attempts of request_frame will fail with the | ||
| 65 | * corresponding code. | ||
| 66 | */ | ||
| 67 | int status_out; | ||
| 68 | |||
| 69 | /** | ||
| 70 | * Index in the age array. | ||
| 71 | */ | ||
| 72 | int age_index; | ||
| 73 | |||
| 74 | /** stage of the initialization of the link properties (dimensions, etc) */ | ||
| 75 | enum { | ||
| 76 | AVLINK_UNINIT = 0, ///< not started | ||
| 77 | AVLINK_STARTINIT, ///< started, but incomplete | ||
| 78 | AVLINK_INIT ///< complete | ||
| 79 | } init_state; | ||
| 80 | } FilterLinkInternal; | ||
| 81 | |||
| 82 | 23358421 | static inline FilterLinkInternal *ff_link_internal(AVFilterLink *link) | |
| 83 | { | ||
| 84 | 23358421 | return (FilterLinkInternal*)link; | |
| 85 | } | ||
| 86 | |||
| 87 | typedef struct AVFilterCommand { | ||
| 88 | double time; ///< time expressed in seconds | ||
| 89 | char *command; ///< command | ||
| 90 | char *arg; ///< optional argument for the command | ||
| 91 | int flags; | ||
| 92 | struct AVFilterCommand *next; | ||
| 93 | } AVFilterCommand; | ||
| 94 | |||
| 95 | typedef struct FFFilterGraph { | ||
| 96 | /** | ||
| 97 | * The public AVFilterGraph. See avfilter.h for it. | ||
| 98 | */ | ||
| 99 | AVFilterGraph p; | ||
| 100 | |||
| 101 | struct FilterLinkInternal **sink_links; | ||
| 102 | int sink_links_count; | ||
| 103 | |||
| 104 | unsigned disable_auto_convert; | ||
| 105 | |||
| 106 | void *thread; | ||
| 107 | avfilter_execute_func *thread_execute; | ||
| 108 | FFFrameQueueGlobal frame_queues; | ||
| 109 | } FFFilterGraph; | ||
| 110 | |||
| 111 | 1205881 | static inline FFFilterGraph *fffiltergraph(AVFilterGraph *graph) | |
| 112 | { | ||
| 113 | 1205881 | return (FFFilterGraph*)graph; | |
| 114 | } | ||
| 115 | |||
| 116 | /** | ||
| 117 | * Update the position of a link in the age heap. | ||
| 118 | */ | ||
| 119 | void ff_avfilter_graph_update_heap(AVFilterGraph *graph, | ||
| 120 | struct FilterLinkInternal *li); | ||
| 121 | |||
| 122 | /** | ||
| 123 | * Allocate a new filter context and return it. | ||
| 124 | * | ||
| 125 | * @param filter what filter to create an instance of | ||
| 126 | * @param inst_name name to give to the new filter context | ||
| 127 | * | ||
| 128 | * @return newly created filter context or NULL on failure | ||
| 129 | */ | ||
| 130 | AVFilterContext *ff_filter_alloc(const AVFilter *filter, const char *inst_name); | ||
| 131 | |||
| 132 | /** | ||
| 133 | * Remove a filter from a graph; | ||
| 134 | */ | ||
| 135 | void ff_filter_graph_remove_filter(AVFilterGraph *graph, AVFilterContext *filter); | ||
| 136 | |||
| 137 | int ff_filter_activate(AVFilterContext *filter); | ||
| 138 | |||
| 139 | /** | ||
| 140 | * Parse filter options into a dictionary. | ||
| 141 | * | ||
| 142 | * @param logctx context for logging | ||
| 143 | * @param priv_class a filter's private class for shorthand options or NULL | ||
| 144 | * @param options dictionary to store parsed options in | ||
| 145 | * @param args options string to parse | ||
| 146 | * | ||
| 147 | * @return a non-negative number on success, a negative error code on failure | ||
| 148 | */ | ||
| 149 | int ff_filter_opt_parse(void *logctx, const AVClass *priv_class, | ||
| 150 | AVDictionary **options, const char *args); | ||
| 151 | |||
| 152 | int ff_graph_thread_init(FFFilterGraph *graph); | ||
| 153 | |||
| 154 | void ff_graph_thread_free(FFFilterGraph *graph); | ||
| 155 | |||
| 156 | #endif /* AVFILTER_AVFILTER_INTERNAL_H */ | ||
| 157 |