3 * Copyright (c) 2007 Bobby Bingham
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "libavutil/atomic.h"
23 #include "libavutil/avassert.h"
24 #include "libavutil/avstring.h"
25 #include "libavutil/channel_layout.h"
26 #include "libavutil/common.h"
27 #include "libavutil/eval.h"
28 #include "libavutil/imgutils.h"
29 #include "libavutil/internal.h"
30 #include "libavutil/opt.h"
31 #include "libavutil/pixdesc.h"
32 #include "libavutil/rational.h"
33 #include "libavutil/samplefmt.h"
40 static int ff_filter_frame_framed(AVFilterLink
*link
, AVFrame
*frame
);
42 void ff_tlog_ref(void *ctx
, AVFrame
*ref
, int end
)
44 av_unused
char buf
[16];
46 "ref[%p buf:%p data:%p linesize[%d, %d, %d, %d] pts:%"PRId64
" pos:%"PRId64
,
47 ref
, ref
->buf
, ref
->data
[0],
48 ref
->linesize
[0], ref
->linesize
[1], ref
->linesize
[2], ref
->linesize
[3],
49 ref
->pts
, av_frame_get_pkt_pos(ref
));
52 ff_tlog(ctx
, " a:%d/%d s:%dx%d i:%c iskey:%d type:%c",
53 ref
->sample_aspect_ratio
.num
, ref
->sample_aspect_ratio
.den
,
54 ref
->width
, ref
->height
,
55 !ref
->interlaced_frame
? 'P' : /* Progressive */
56 ref
->top_field_first
? 'T' : 'B', /* Top / Bottom */
58 av_get_picture_type_char(ref
->pict_type
));
60 if (ref
->nb_samples
) {
61 ff_tlog(ctx
, " cl:%"PRId64
"d n:%d r:%d",
67 ff_tlog(ctx
, "]%s", end
? "\n" : "");
70 unsigned avfilter_version(void)
72 av_assert0(LIBAVFILTER_VERSION_MICRO
>= 100);
73 return LIBAVFILTER_VERSION_INT
;
76 const char *avfilter_configuration(void)
78 return FFMPEG_CONFIGURATION
;
81 const char *avfilter_license(void)
83 #define LICENSE_PREFIX "libavfilter license: "
84 return LICENSE_PREFIX FFMPEG_LICENSE
+ sizeof(LICENSE_PREFIX
) - 1;
87 void ff_command_queue_pop(AVFilterContext
*filter
)
89 AVFilterCommand
*c
= filter
->command_queue
;
91 av_freep(&c
->command
);
92 filter
->command_queue
= c
->next
;
96 int ff_insert_pad(unsigned idx
, unsigned *count
, size_t padidx_off
,
97 AVFilterPad
**pads
, AVFilterLink
***links
,
100 AVFilterLink
**newlinks
;
101 AVFilterPad
*newpads
;
104 idx
= FFMIN(idx
, *count
);
106 newpads
= av_realloc_array(*pads
, *count
+ 1, sizeof(AVFilterPad
));
107 newlinks
= av_realloc_array(*links
, *count
+ 1, sizeof(AVFilterLink
*));
112 if (!newpads
|| !newlinks
)
113 return AVERROR(ENOMEM
);
115 memmove(*pads
+ idx
+ 1, *pads
+ idx
, sizeof(AVFilterPad
) * (*count
- idx
));
116 memmove(*links
+ idx
+ 1, *links
+ idx
, sizeof(AVFilterLink
*) * (*count
- idx
));
117 memcpy(*pads
+ idx
, newpad
, sizeof(AVFilterPad
));
118 (*links
)[idx
] = NULL
;
121 for (i
= idx
+ 1; i
< *count
; i
++)
123 (*(unsigned *)((uint8_t *) (*links
)[i
] + padidx_off
))++;
128 int avfilter_link(AVFilterContext
*src
, unsigned srcpad
,
129 AVFilterContext
*dst
, unsigned dstpad
)
133 if (src
->nb_outputs
<= srcpad
|| dst
->nb_inputs
<= dstpad
||
134 src
->outputs
[srcpad
] || dst
->inputs
[dstpad
])
137 if (src
->output_pads
[srcpad
].type
!= dst
->input_pads
[dstpad
].type
) {
138 av_log(src
, AV_LOG_ERROR
,
139 "Media type mismatch between the '%s' filter output pad %d (%s) and the '%s' filter input pad %d (%s)\n",
140 src
->name
, srcpad
, (char *)av_x_if_null(av_get_media_type_string(src
->output_pads
[srcpad
].type
), "?"),
141 dst
->name
, dstpad
, (char *)av_x_if_null(av_get_media_type_string(dst
-> input_pads
[dstpad
].type
), "?"));
142 return AVERROR(EINVAL
);
145 link
= av_mallocz(sizeof(*link
));
147 return AVERROR(ENOMEM
);
149 src
->outputs
[srcpad
] = dst
->inputs
[dstpad
] = link
;
153 link
->srcpad
= &src
->output_pads
[srcpad
];
154 link
->dstpad
= &dst
->input_pads
[dstpad
];
155 link
->type
= src
->output_pads
[srcpad
].type
;
156 av_assert0(AV_PIX_FMT_NONE
== -1 && AV_SAMPLE_FMT_NONE
== -1);
162 void avfilter_link_free(AVFilterLink
**link
)
167 av_frame_free(&(*link
)->partial_buf
);
172 int avfilter_link_get_channels(AVFilterLink
*link
)
174 return link
->channels
;
177 void avfilter_link_set_closed(AVFilterLink
*link
, int closed
)
179 link
->closed
= closed
;
182 int avfilter_insert_filter(AVFilterLink
*link
, AVFilterContext
*filt
,
183 unsigned filt_srcpad_idx
, unsigned filt_dstpad_idx
)
186 unsigned dstpad_idx
= link
->dstpad
- link
->dst
->input_pads
;
188 av_log(link
->dst
, AV_LOG_VERBOSE
, "auto-inserting filter '%s' "
189 "between the filter '%s' and the filter '%s'\n",
190 filt
->name
, link
->src
->name
, link
->dst
->name
);
192 link
->dst
->inputs
[dstpad_idx
] = NULL
;
193 if ((ret
= avfilter_link(filt
, filt_dstpad_idx
, link
->dst
, dstpad_idx
)) < 0) {
194 /* failed to link output filter to new filter */
195 link
->dst
->inputs
[dstpad_idx
] = link
;
199 /* re-hookup the link to the new destination filter we inserted */
201 link
->dstpad
= &filt
->input_pads
[filt_srcpad_idx
];
202 filt
->inputs
[filt_srcpad_idx
] = link
;
204 /* if any information on supported media formats already exists on the
205 * link, we need to preserve that */
206 if (link
->out_formats
)
207 ff_formats_changeref(&link
->out_formats
,
208 &filt
->outputs
[filt_dstpad_idx
]->out_formats
);
209 if (link
->out_samplerates
)
210 ff_formats_changeref(&link
->out_samplerates
,
211 &filt
->outputs
[filt_dstpad_idx
]->out_samplerates
);
212 if (link
->out_channel_layouts
)
213 ff_channel_layouts_changeref(&link
->out_channel_layouts
,
214 &filt
->outputs
[filt_dstpad_idx
]->out_channel_layouts
);
219 int avfilter_config_links(AVFilterContext
*filter
)
221 int (*config_link
)(AVFilterLink
*);
225 for (i
= 0; i
< filter
->nb_inputs
; i
++) {
226 AVFilterLink
*link
= filter
->inputs
[i
];
227 AVFilterLink
*inlink
;
230 if (!link
->src
|| !link
->dst
) {
231 av_log(filter
, AV_LOG_ERROR
,
232 "Not all input and output are properly linked (%d).\n", i
);
233 return AVERROR(EINVAL
);
236 inlink
= link
->src
->nb_inputs
? link
->src
->inputs
[0] : NULL
;
237 link
->current_pts
= AV_NOPTS_VALUE
;
239 switch (link
->init_state
) {
242 case AVLINK_STARTINIT
:
243 av_log(filter
, AV_LOG_INFO
, "circular filter chain detected\n");
246 link
->init_state
= AVLINK_STARTINIT
;
248 if ((ret
= avfilter_config_links(link
->src
)) < 0)
251 if (!(config_link
= link
->srcpad
->config_props
)) {
252 if (link
->src
->nb_inputs
!= 1) {
253 av_log(link
->src
, AV_LOG_ERROR
, "Source filters and filters "
254 "with more than one input "
255 "must set config_props() "
256 "callbacks on all outputs\n");
257 return AVERROR(EINVAL
);
259 } else if ((ret
= config_link(link
)) < 0) {
260 av_log(link
->src
, AV_LOG_ERROR
,
261 "Failed to configure output pad on %s\n",
266 switch (link
->type
) {
267 case AVMEDIA_TYPE_VIDEO
:
268 if (!link
->time_base
.num
&& !link
->time_base
.den
)
269 link
->time_base
= inlink
? inlink
->time_base
: AV_TIME_BASE_Q
;
271 if (!link
->sample_aspect_ratio
.num
&& !link
->sample_aspect_ratio
.den
)
272 link
->sample_aspect_ratio
= inlink
?
273 inlink
->sample_aspect_ratio
: (AVRational
){1,1};
275 if (inlink
&& !link
->frame_rate
.num
&& !link
->frame_rate
.den
)
276 link
->frame_rate
= inlink
->frame_rate
;
283 } else if (!link
->w
|| !link
->h
) {
284 av_log(link
->src
, AV_LOG_ERROR
,
285 "Video source filters must set their output link's "
286 "width and height\n");
287 return AVERROR(EINVAL
);
291 case AVMEDIA_TYPE_AUDIO
:
293 if (!link
->time_base
.num
&& !link
->time_base
.den
)
294 link
->time_base
= inlink
->time_base
;
297 if (!link
->time_base
.num
&& !link
->time_base
.den
)
298 link
->time_base
= (AVRational
) {1, link
->sample_rate
};
301 if ((config_link
= link
->dstpad
->config_props
))
302 if ((ret
= config_link(link
)) < 0) {
303 av_log(link
->dst
, AV_LOG_ERROR
,
304 "Failed to configure input pad on %s\n",
309 link
->init_state
= AVLINK_INIT
;
316 void ff_tlog_link(void *ctx
, AVFilterLink
*link
, int end
)
318 if (link
->type
== AVMEDIA_TYPE_VIDEO
) {
320 "link[%p s:%dx%d fmt:%s %s->%s]%s",
321 link
, link
->w
, link
->h
,
322 av_get_pix_fmt_name(link
->format
),
323 link
->src
? link
->src
->filter
->name
: "",
324 link
->dst
? link
->dst
->filter
->name
: "",
328 av_get_channel_layout_string(buf
, sizeof(buf
), -1, link
->channel_layout
);
331 "link[%p r:%d cl:%s fmt:%s %s->%s]%s",
332 link
, (int)link
->sample_rate
, buf
,
333 av_get_sample_fmt_name(link
->format
),
334 link
->src
? link
->src
->filter
->name
: "",
335 link
->dst
? link
->dst
->filter
->name
: "",
340 int ff_request_frame(AVFilterLink
*link
)
343 FF_TPRINTF_START(NULL
, request_frame
); ff_tlog_link(NULL
, link
, 1);
347 av_assert0(!link
->frame_requested
);
348 link
->frame_requested
= 1;
349 while (link
->frame_requested
) {
350 if (link
->srcpad
->request_frame
)
351 ret
= link
->srcpad
->request_frame(link
);
352 else if (link
->src
->inputs
[0])
353 ret
= ff_request_frame(link
->src
->inputs
[0]);
354 if (ret
== AVERROR_EOF
&& link
->partial_buf
) {
355 AVFrame
*pbuf
= link
->partial_buf
;
356 link
->partial_buf
= NULL
;
357 ret
= ff_filter_frame_framed(link
, pbuf
);
360 link
->frame_requested
= 0;
361 if (ret
== AVERROR_EOF
)
364 av_assert0(!link
->frame_requested
||
365 link
->flags
& FF_LINK_FLAG_REQUEST_LOOP
);
371 int ff_poll_frame(AVFilterLink
*link
)
373 int i
, min
= INT_MAX
;
375 if (link
->srcpad
->poll_frame
)
376 return link
->srcpad
->poll_frame(link
);
378 for (i
= 0; i
< link
->src
->nb_inputs
; i
++) {
380 if (!link
->src
->inputs
[i
])
382 val
= ff_poll_frame(link
->src
->inputs
[i
]);
383 min
= FFMIN(min
, val
);
389 static const char *const var_names
[] = {
407 static int set_enable_expr(AVFilterContext
*ctx
, const char *expr
)
411 AVExpr
*old
= ctx
->enable
;
413 if (!(ctx
->filter
->flags
& AVFILTER_FLAG_SUPPORT_TIMELINE
)) {
414 av_log(ctx
, AV_LOG_ERROR
, "Timeline ('enable' option) not supported "
415 "with filter '%s'\n", ctx
->filter
->name
);
416 return AVERROR_PATCHWELCOME
;
419 expr_dup
= av_strdup(expr
);
421 return AVERROR(ENOMEM
);
423 if (!ctx
->var_values
) {
424 ctx
->var_values
= av_calloc(VAR_VARS_NB
, sizeof(*ctx
->var_values
));
425 if (!ctx
->var_values
) {
427 return AVERROR(ENOMEM
);
431 ret
= av_expr_parse((AVExpr
**)&ctx
->enable
, expr_dup
, var_names
,
432 NULL
, NULL
, NULL
, NULL
, 0, ctx
->priv
);
434 av_log(ctx
->priv
, AV_LOG_ERROR
,
435 "Error when evaluating the expression '%s' for enable\n",
442 av_free(ctx
->enable_str
);
443 ctx
->enable_str
= expr_dup
;
447 void ff_update_link_current_pts(AVFilterLink
*link
, int64_t pts
)
449 if (pts
== AV_NOPTS_VALUE
)
451 link
->current_pts
= av_rescale_q(pts
, link
->time_base
, AV_TIME_BASE_Q
);
452 /* TODO use duration */
453 if (link
->graph
&& link
->age_index
>= 0)
454 ff_avfilter_graph_update_heap(link
->graph
, link
);
457 int avfilter_process_command(AVFilterContext
*filter
, const char *cmd
, const char *arg
, char *res
, int res_len
, int flags
)
459 if(!strcmp(cmd
, "ping")){
460 char local_res
[256] = {0};
464 res_len
= sizeof(local_res
);
466 av_strlcatf(res
, res_len
, "pong from:%s %s\n", filter
->filter
->name
, filter
->name
);
467 if (res
== local_res
)
468 av_log(filter
, AV_LOG_INFO
, "%s", res
);
470 }else if(!strcmp(cmd
, "enable")) {
471 return set_enable_expr(filter
, arg
);
472 }else if(filter
->filter
->process_command
) {
473 return filter
->filter
->process_command(filter
, cmd
, arg
, res
, res_len
, flags
);
475 return AVERROR(ENOSYS
);
478 static AVFilter
*first_filter
;
479 static AVFilter
**last_filter
= &first_filter
;
481 #if !FF_API_NOCONST_GET_NAME
484 AVFilter
*avfilter_get_by_name(const char *name
)
486 const AVFilter
*f
= NULL
;
491 while ((f
= avfilter_next(f
)))
492 if (!strcmp(f
->name
, name
))
493 return (AVFilter
*)f
;
498 int avfilter_register(AVFilter
*filter
)
500 AVFilter
**f
= last_filter
;
503 /* the filter must select generic or internal exclusively */
504 av_assert0((filter
->flags
& AVFILTER_FLAG_SUPPORT_TIMELINE
) != AVFILTER_FLAG_SUPPORT_TIMELINE
);
506 for(i
=0; filter
->inputs
&& filter
->inputs
[i
].name
; i
++) {
507 const AVFilterPad
*input
= &filter
->inputs
[i
];
508 av_assert0( !input
->filter_frame
509 || (!input
->start_frame
&& !input
->end_frame
));
514 while(*f
|| avpriv_atomic_ptr_cas((void * volatile *)f
, NULL
, filter
))
516 last_filter
= &filter
->next
;
521 const AVFilter
*avfilter_next(const AVFilter
*prev
)
523 return prev
? prev
->next
: first_filter
;
526 #if FF_API_OLD_FILTER_REGISTER
527 AVFilter
**av_filter_next(AVFilter
**filter
)
529 return filter
? &(*filter
)->next
: &first_filter
;
532 void avfilter_uninit(void)
537 int avfilter_pad_count(const AVFilterPad
*pads
)
544 for (count
= 0; pads
->name
; count
++)
549 static const char *default_filter_name(void *filter_ctx
)
551 AVFilterContext
*ctx
= filter_ctx
;
552 return ctx
->name
? ctx
->name
: ctx
->filter
->name
;
555 static void *filter_child_next(void *obj
, void *prev
)
557 AVFilterContext
*ctx
= obj
;
558 if (!prev
&& ctx
->filter
&& ctx
->filter
->priv_class
&& ctx
->priv
)
563 static const AVClass
*filter_child_class_next(const AVClass
*prev
)
565 const AVFilter
*f
= NULL
;
567 /* find the filter that corresponds to prev */
568 while (prev
&& (f
= avfilter_next(f
)))
569 if (f
->priv_class
== prev
)
572 /* could not find filter corresponding to prev */
576 /* find next filter with specific options */
577 while ((f
= avfilter_next(f
)))
579 return f
->priv_class
;
584 #define OFFSET(x) offsetof(AVFilterContext, x)
585 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM
586 static const AVOption avfilter_options
[] = {
587 { "thread_type", "Allowed thread types", OFFSET(thread_type
), AV_OPT_TYPE_FLAGS
,
588 { .i64
= AVFILTER_THREAD_SLICE
}, 0, INT_MAX
, FLAGS
, "thread_type" },
589 { "slice", NULL
, 0, AV_OPT_TYPE_CONST
, { .i64
= AVFILTER_THREAD_SLICE
}, .unit
= "thread_type" },
590 { "enable", "set enable expression", OFFSET(enable_str
), AV_OPT_TYPE_STRING
, {.str
=NULL
}, .flags
= FLAGS
},
594 static const AVClass avfilter_class
= {
595 .class_name
= "AVFilter",
596 .item_name
= default_filter_name
,
597 .version
= LIBAVUTIL_VERSION_INT
,
598 .category
= AV_CLASS_CATEGORY_FILTER
,
599 .child_next
= filter_child_next
,
600 .child_class_next
= filter_child_class_next
,
601 .option
= avfilter_options
,
604 static int default_execute(AVFilterContext
*ctx
, avfilter_action_func
*func
, void *arg
,
605 int *ret
, int nb_jobs
)
609 for (i
= 0; i
< nb_jobs
; i
++) {
610 int r
= func(ctx
, arg
, i
, nb_jobs
);
617 AVFilterContext
*ff_filter_alloc(const AVFilter
*filter
, const char *inst_name
)
619 AVFilterContext
*ret
;
624 ret
= av_mallocz(sizeof(AVFilterContext
));
628 ret
->av_class
= &avfilter_class
;
629 ret
->filter
= filter
;
630 ret
->name
= inst_name
? av_strdup(inst_name
) : NULL
;
631 if (filter
->priv_size
) {
632 ret
->priv
= av_mallocz(filter
->priv_size
);
637 av_opt_set_defaults(ret
);
638 if (filter
->priv_class
) {
639 *(const AVClass
**)ret
->priv
= filter
->priv_class
;
640 av_opt_set_defaults(ret
->priv
);
643 ret
->internal
= av_mallocz(sizeof(*ret
->internal
));
646 ret
->internal
->execute
= default_execute
;
648 ret
->nb_inputs
= avfilter_pad_count(filter
->inputs
);
649 if (ret
->nb_inputs
) {
650 ret
->input_pads
= av_malloc_array(ret
->nb_inputs
, sizeof(AVFilterPad
));
651 if (!ret
->input_pads
)
653 memcpy(ret
->input_pads
, filter
->inputs
, sizeof(AVFilterPad
) * ret
->nb_inputs
);
654 ret
->inputs
= av_mallocz_array(ret
->nb_inputs
, sizeof(AVFilterLink
*));
659 ret
->nb_outputs
= avfilter_pad_count(filter
->outputs
);
660 if (ret
->nb_outputs
) {
661 ret
->output_pads
= av_malloc_array(ret
->nb_outputs
, sizeof(AVFilterPad
));
662 if (!ret
->output_pads
)
664 memcpy(ret
->output_pads
, filter
->outputs
, sizeof(AVFilterPad
) * ret
->nb_outputs
);
665 ret
->outputs
= av_mallocz_array(ret
->nb_outputs
, sizeof(AVFilterLink
*));
670 FF_DISABLE_DEPRECATION_WARNINGS
671 ret
->output_count
= ret
->nb_outputs
;
672 ret
->input_count
= ret
->nb_inputs
;
673 FF_ENABLE_DEPRECATION_WARNINGS
679 av_freep(&ret
->inputs
);
680 av_freep(&ret
->input_pads
);
682 av_freep(&ret
->outputs
);
683 av_freep(&ret
->output_pads
);
685 av_freep(&ret
->priv
);
686 av_freep(&ret
->internal
);
691 #if FF_API_AVFILTER_OPEN
692 int avfilter_open(AVFilterContext
**filter_ctx
, AVFilter
*filter
, const char *inst_name
)
694 *filter_ctx
= ff_filter_alloc(filter
, inst_name
);
695 return *filter_ctx
? 0 : AVERROR(ENOMEM
);
699 static void free_link(AVFilterLink
*link
)
705 link
->src
->outputs
[link
->srcpad
- link
->src
->output_pads
] = NULL
;
707 link
->dst
->inputs
[link
->dstpad
- link
->dst
->input_pads
] = NULL
;
709 ff_formats_unref(&link
->in_formats
);
710 ff_formats_unref(&link
->out_formats
);
711 ff_formats_unref(&link
->in_samplerates
);
712 ff_formats_unref(&link
->out_samplerates
);
713 ff_channel_layouts_unref(&link
->in_channel_layouts
);
714 ff_channel_layouts_unref(&link
->out_channel_layouts
);
715 avfilter_link_free(&link
);
718 void avfilter_free(AVFilterContext
*filter
)
726 ff_filter_graph_remove_filter(filter
->graph
, filter
);
728 if (filter
->filter
->uninit
)
729 filter
->filter
->uninit(filter
);
731 for (i
= 0; i
< filter
->nb_inputs
; i
++) {
732 free_link(filter
->inputs
[i
]);
734 for (i
= 0; i
< filter
->nb_outputs
; i
++) {
735 free_link(filter
->outputs
[i
]);
738 if (filter
->filter
->priv_class
)
739 av_opt_free(filter
->priv
);
741 av_freep(&filter
->name
);
742 av_freep(&filter
->input_pads
);
743 av_freep(&filter
->output_pads
);
744 av_freep(&filter
->inputs
);
745 av_freep(&filter
->outputs
);
746 av_freep(&filter
->priv
);
747 while(filter
->command_queue
){
748 ff_command_queue_pop(filter
);
751 av_expr_free(filter
->enable
);
752 filter
->enable
= NULL
;
753 av_freep(&filter
->var_values
);
754 av_freep(&filter
->internal
);
758 static int process_options(AVFilterContext
*ctx
, AVDictionary
**options
,
761 const AVOption
*o
= NULL
;
763 char *av_uninit(parsed_key
), *av_uninit(value
);
771 const char *shorthand
= NULL
;
773 o
= av_opt_next(ctx
->priv
, o
);
775 if (o
->type
== AV_OPT_TYPE_CONST
|| o
->offset
== offset
)
781 ret
= av_opt_get_key_value(&args
, "=", ":",
782 shorthand
? AV_OPT_FLAG_IMPLICIT_KEY
: 0,
783 &parsed_key
, &value
);
785 if (ret
== AVERROR(EINVAL
))
786 av_log(ctx
, AV_LOG_ERROR
, "No option name near '%s'\n", args
);
788 av_log(ctx
, AV_LOG_ERROR
, "Unable to parse '%s': %s\n", args
,
796 while ((o
= av_opt_next(ctx
->priv
, o
))); /* discard all remaining shorthand */
801 av_log(ctx
, AV_LOG_DEBUG
, "Setting '%s' to value '%s'\n", key
, value
);
803 if (av_opt_find(ctx
, key
, NULL
, 0, 0)) {
804 ret
= av_opt_set(ctx
, key
, value
, 0);
811 av_dict_set(options
, key
, value
, 0);
812 if ((ret
= av_opt_set(ctx
->priv
, key
, value
, 0)) < 0) {
813 if (!av_opt_find(ctx
->priv
, key
, NULL
, 0, AV_OPT_SEARCH_CHILDREN
| AV_OPT_SEARCH_FAKE_OBJ
)) {
814 if (ret
== AVERROR_OPTION_NOT_FOUND
)
815 av_log(ctx
, AV_LOG_ERROR
, "Option '%s' not found\n", key
);
828 if (ctx
->enable_str
) {
829 ret
= set_enable_expr(ctx
, ctx
->enable_str
);
836 #if FF_API_AVFILTER_INIT_FILTER
837 int avfilter_init_filter(AVFilterContext
*filter
, const char *args
, void *opaque
)
839 return avfilter_init_str(filter
, args
);
843 int avfilter_init_dict(AVFilterContext
*ctx
, AVDictionary
**options
)
847 ret
= av_opt_set_dict(ctx
, options
);
849 av_log(ctx
, AV_LOG_ERROR
, "Error applying generic filter options.\n");
853 if (ctx
->filter
->flags
& AVFILTER_FLAG_SLICE_THREADS
&&
854 ctx
->thread_type
& ctx
->graph
->thread_type
& AVFILTER_THREAD_SLICE
&&
855 ctx
->graph
->internal
->thread_execute
) {
856 ctx
->thread_type
= AVFILTER_THREAD_SLICE
;
857 ctx
->internal
->execute
= ctx
->graph
->internal
->thread_execute
;
859 ctx
->thread_type
= 0;
862 if (ctx
->filter
->priv_class
) {
863 ret
= av_opt_set_dict(ctx
->priv
, options
);
865 av_log(ctx
, AV_LOG_ERROR
, "Error applying options to the filter.\n");
870 if (ctx
->filter
->init_opaque
)
871 ret
= ctx
->filter
->init_opaque(ctx
, NULL
);
872 else if (ctx
->filter
->init
)
873 ret
= ctx
->filter
->init(ctx
);
874 else if (ctx
->filter
->init_dict
)
875 ret
= ctx
->filter
->init_dict(ctx
, options
);
880 int avfilter_init_str(AVFilterContext
*filter
, const char *args
)
882 AVDictionary
*options
= NULL
;
883 AVDictionaryEntry
*e
;
887 if (!filter
->filter
->priv_class
) {
888 av_log(filter
, AV_LOG_ERROR
, "This filter does not take any "
889 "options, but options were provided: %s.\n", args
);
890 return AVERROR(EINVAL
);
893 #if FF_API_OLD_FILTER_OPTS
894 if ( !strcmp(filter
->filter
->name
, "format") ||
895 !strcmp(filter
->filter
->name
, "noformat") ||
896 !strcmp(filter
->filter
->name
, "frei0r") ||
897 !strcmp(filter
->filter
->name
, "frei0r_src") ||
898 !strcmp(filter
->filter
->name
, "ocv") ||
899 !strcmp(filter
->filter
->name
, "pan") ||
900 !strcmp(filter
->filter
->name
, "pp") ||
901 !strcmp(filter
->filter
->name
, "aevalsrc")) {
902 /* a hack for compatibility with the old syntax
903 * replace colons with |s */
904 char *copy
= av_strdup(args
);
906 int nb_leading
= 0; // number of leading colons to skip
910 ret
= AVERROR(ENOMEM
);
914 if (!strcmp(filter
->filter
->name
, "frei0r") ||
915 !strcmp(filter
->filter
->name
, "ocv"))
917 else if (!strcmp(filter
->filter
->name
, "frei0r_src"))
920 while (nb_leading
--) {
923 p
= copy
+ strlen(copy
);
929 deprecated
= strchr(p
, ':') != NULL
;
931 if (!strcmp(filter
->filter
->name
, "aevalsrc")) {
933 while ((p
= strchr(p
, ':')) && p
[1] != ':') {
934 const char *epos
= strchr(p
+ 1, '=');
935 const char *spos
= strchr(p
+ 1, ':');
936 const int next_token_is_opt
= epos
&& (!spos
|| epos
< spos
);
937 if (next_token_is_opt
) {
941 /* next token does not contain a '=', assume a channel expression */
945 if (p
&& *p
== ':') { // double sep '::' found
947 memmove(p
, p
+ 1, strlen(p
));
950 while ((p
= strchr(p
, ':')))
954 av_log(filter
, AV_LOG_WARNING
, "This syntax is deprecated. Use "
955 "'|' to separate the list items.\n");
957 av_log(filter
, AV_LOG_DEBUG
, "compat: called with args=[%s]\n", copy
);
958 ret
= process_options(filter
, &options
, copy
);
966 if (!strcmp(filter
->filter
->name
, "mp")) {
969 if (!strncmp(args
, "filter=", 7))
971 ret
= av_escape(&escaped
, args
, ":=", AV_ESCAPE_MODE_BACKSLASH
, 0);
973 av_log(filter
, AV_LOG_ERROR
, "Unable to escape MPlayer filters arg '%s'\n", args
);
976 ret
= process_options(filter
, &options
, escaped
);
980 ret
= process_options(filter
, &options
, args
);
986 ret
= avfilter_init_dict(filter
, &options
);
990 if ((e
= av_dict_get(options
, "", NULL
, AV_DICT_IGNORE_SUFFIX
))) {
991 av_log(filter
, AV_LOG_ERROR
, "No such option: %s.\n", e
->key
);
992 ret
= AVERROR_OPTION_NOT_FOUND
;
997 av_dict_free(&options
);
1002 const char *avfilter_pad_get_name(const AVFilterPad
*pads
, int pad_idx
)
1004 return pads
[pad_idx
].name
;
1007 enum AVMediaType
avfilter_pad_get_type(const AVFilterPad
*pads
, int pad_idx
)
1009 return pads
[pad_idx
].type
;
1012 static int default_filter_frame(AVFilterLink
*link
, AVFrame
*frame
)
1014 return ff_filter_frame(link
->dst
->outputs
[0], frame
);
1017 static int ff_filter_frame_framed(AVFilterLink
*link
, AVFrame
*frame
)
1019 int (*filter_frame
)(AVFilterLink
*, AVFrame
*);
1020 AVFilterContext
*dstctx
= link
->dst
;
1021 AVFilterPad
*dst
= link
->dstpad
;
1022 AVFrame
*out
= NULL
;
1024 AVFilterCommand
*cmd
= link
->dst
->command_queue
;
1028 av_frame_free(&frame
);
1032 if (!(filter_frame
= dst
->filter_frame
))
1033 filter_frame
= default_filter_frame
;
1035 /* copy the frame if needed */
1036 if (dst
->needs_writable
&& !av_frame_is_writable(frame
)) {
1037 av_log(link
->dst
, AV_LOG_DEBUG
, "Copying data in avfilter.\n");
1039 /* Maybe use ff_copy_buffer_ref instead? */
1040 switch (link
->type
) {
1041 case AVMEDIA_TYPE_VIDEO
:
1042 out
= ff_get_video_buffer(link
, link
->w
, link
->h
);
1044 case AVMEDIA_TYPE_AUDIO
:
1045 out
= ff_get_audio_buffer(link
, frame
->nb_samples
);
1048 ret
= AVERROR(EINVAL
);
1052 ret
= AVERROR(ENOMEM
);
1056 ret
= av_frame_copy_props(out
, frame
);
1060 switch (link
->type
) {
1061 case AVMEDIA_TYPE_VIDEO
:
1062 av_image_copy(out
->data
, out
->linesize
, (const uint8_t **)frame
->data
, frame
->linesize
,
1063 frame
->format
, frame
->width
, frame
->height
);
1065 case AVMEDIA_TYPE_AUDIO
:
1066 av_samples_copy(out
->extended_data
, frame
->extended_data
,
1067 0, 0, frame
->nb_samples
,
1068 av_get_channel_layout_nb_channels(frame
->channel_layout
),
1072 ret
= AVERROR(EINVAL
);
1076 av_frame_free(&frame
);
1080 while(cmd
&& cmd
->time
<= out
->pts
* av_q2d(link
->time_base
)){
1081 av_log(link
->dst
, AV_LOG_DEBUG
,
1082 "Processing command time:%f command:%s arg:%s\n",
1083 cmd
->time
, cmd
->command
, cmd
->arg
);
1084 avfilter_process_command(link
->dst
, cmd
->command
, cmd
->arg
, 0, 0, cmd
->flags
);
1085 ff_command_queue_pop(link
->dst
);
1086 cmd
= link
->dst
->command_queue
;
1090 if (dstctx
->enable_str
) {
1091 int64_t pos
= av_frame_get_pkt_pos(out
);
1092 dstctx
->var_values
[VAR_N
] = link
->frame_count
;
1093 dstctx
->var_values
[VAR_T
] = pts
== AV_NOPTS_VALUE
? NAN
: pts
* av_q2d(link
->time_base
);
1094 dstctx
->var_values
[VAR_W
] = link
->w
;
1095 dstctx
->var_values
[VAR_H
] = link
->h
;
1096 dstctx
->var_values
[VAR_POS
] = pos
== -1 ? NAN
: pos
;
1098 dstctx
->is_disabled
= fabs(av_expr_eval(dstctx
->enable
, dstctx
->var_values
, NULL
)) < 0.5;
1099 if (dstctx
->is_disabled
&&
1100 (dstctx
->filter
->flags
& AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
))
1101 filter_frame
= default_filter_frame
;
1103 ret
= filter_frame(link
, out
);
1104 link
->frame_count
++;
1105 link
->frame_requested
= 0;
1106 ff_update_link_current_pts(link
, pts
);
1110 av_frame_free(&out
);
1111 av_frame_free(&frame
);
1115 static int ff_filter_frame_needs_framing(AVFilterLink
*link
, AVFrame
*frame
)
1117 int insamples
= frame
->nb_samples
, inpos
= 0, nb_samples
;
1118 AVFrame
*pbuf
= link
->partial_buf
;
1119 int nb_channels
= av_frame_get_channels(frame
);
1122 link
->flags
|= FF_LINK_FLAG_REQUEST_LOOP
;
1123 /* Handle framing (min_samples, max_samples) */
1126 AVRational samples_tb
= { 1, link
->sample_rate
};
1127 pbuf
= ff_get_audio_buffer(link
, link
->partial_buf_size
);
1129 av_log(link
->dst
, AV_LOG_WARNING
,
1130 "Samples dropped due to memory allocation failure.\n");
1133 av_frame_copy_props(pbuf
, frame
);
1134 pbuf
->pts
= frame
->pts
;
1135 if (pbuf
->pts
!= AV_NOPTS_VALUE
)
1136 pbuf
->pts
+= av_rescale_q(inpos
, samples_tb
, link
->time_base
);
1137 pbuf
->nb_samples
= 0;
1139 nb_samples
= FFMIN(insamples
,
1140 link
->partial_buf_size
- pbuf
->nb_samples
);
1141 av_samples_copy(pbuf
->extended_data
, frame
->extended_data
,
1142 pbuf
->nb_samples
, inpos
,
1143 nb_samples
, nb_channels
, link
->format
);
1144 inpos
+= nb_samples
;
1145 insamples
-= nb_samples
;
1146 pbuf
->nb_samples
+= nb_samples
;
1147 if (pbuf
->nb_samples
>= link
->min_samples
) {
1148 ret
= ff_filter_frame_framed(link
, pbuf
);
1152 av_frame_free(&frame
);
1153 link
->partial_buf
= pbuf
;
1157 int ff_filter_frame(AVFilterLink
*link
, AVFrame
*frame
)
1159 FF_TPRINTF_START(NULL
, filter_frame
); ff_tlog_link(NULL
, link
, 1); ff_tlog(NULL
, " "); ff_tlog_ref(NULL
, frame
, 1);
1161 /* Consistency checks */
1162 if (link
->type
== AVMEDIA_TYPE_VIDEO
) {
1163 if (strcmp(link
->dst
->filter
->name
, "scale")) {
1164 av_assert1(frame
->format
== link
->format
);
1165 av_assert1(frame
->width
== link
->w
);
1166 av_assert1(frame
->height
== link
->h
);
1169 av_assert1(frame
->format
== link
->format
);
1170 av_assert1(av_frame_get_channels(frame
) == link
->channels
);
1171 av_assert1(frame
->channel_layout
== link
->channel_layout
);
1172 av_assert1(frame
->sample_rate
== link
->sample_rate
);
1175 /* Go directly to actual filtering if possible */
1176 if (link
->type
== AVMEDIA_TYPE_AUDIO
&&
1177 link
->min_samples
&&
1178 (link
->partial_buf
||
1179 frame
->nb_samples
< link
->min_samples
||
1180 frame
->nb_samples
> link
->max_samples
)) {
1181 return ff_filter_frame_needs_framing(link
, frame
);
1183 return ff_filter_frame_framed(link
, frame
);
1187 const AVClass
*avfilter_get_class(void)
1189 return &avfilter_class
;